From 7bc2f6e1f15323c043828cfc5c7eb96d523994c9 Mon Sep 17 00:00:00 2001 From: Brian West Date: Tue, 9 Mar 2010 00:45:20 +0000 Subject: [PATCH] nothing a little perl can't extract from a draft git-svn-id: http://svn.freeswitch.org/svn/freeswitch/trunk@16944 d0543943-73ff-0310-b7d9-9358b9ac24b2 --- libs/silk/Makefile | 109 ++ libs/silk/interface/SKP_Silk_SDK_API.h | 175 ++ libs/silk/interface/SKP_Silk_control.h | 105 ++ libs/silk/interface/SKP_Silk_errors.h | 106 ++ libs/silk/interface/SKP_Silk_typedef.h | 116 ++ libs/silk/src/SKP_Silk_A2NLSF.c | 314 ++++ libs/silk/src/SKP_Silk_CNG.c | 175 ++ .../src/SKP_Silk_HP_variable_cutoff_FIX.c | 135 ++ libs/silk/src/SKP_Silk_Inlines.h | 312 ++++ libs/silk/src/SKP_Silk_LBRR_reset.c | 46 + libs/silk/src/SKP_Silk_LPC_inv_pred_gain.c | 213 +++ libs/silk/src/SKP_Silk_LPC_stabilize.c | 153 ++ libs/silk/src/SKP_Silk_LPC_synthesis_filter.c | 114 ++ .../silk/src/SKP_Silk_LPC_synthesis_order16.c | 162 ++ libs/silk/src/SKP_Silk_LP_variable_cutoff.c | 217 +++ libs/silk/src/SKP_Silk_LSF_cos_table.c | 81 + .../src/SKP_Silk_LTP_analysis_filter_FIX.c | 100 ++ libs/silk/src/SKP_Silk_LTP_scale_ctrl_FIX.c | 92 ++ libs/silk/src/SKP_Silk_MA.c | 262 +++ libs/silk/src/SKP_Silk_NLSF2A.c | 174 ++ libs/silk/src/SKP_Silk_NLSF2A_stable.c | 68 + libs/silk/src/SKP_Silk_NLSF_MSVQ_decode.c | 107 ++ libs/silk/src/SKP_Silk_NLSF_MSVQ_encode_FIX.c | 252 +++ .../SKP_Silk_NLSF_VQ_nearest_neighbor_FIX.c | 77 + .../silk/src/SKP_Silk_NLSF_VQ_sum_error_FIX.c | 90 + .../src/SKP_Silk_NLSF_VQ_weights_laroia.c | 94 ++ libs/silk/src/SKP_Silk_NLSF_stabilize.c | 175 ++ libs/silk/src/SKP_Silk_NSQ.c | 502 ++++++ libs/silk/src/SKP_Silk_NSQ_del_dec.c | 803 +++++++++ libs/silk/src/SKP_Silk_PLC.c | 435 +++++ libs/silk/src/SKP_Silk_PLC.h | 93 ++ libs/silk/src/SKP_Silk_SigProc_FIX.h | 887 ++++++++++ libs/silk/src/SKP_Silk_VAD.c | 360 ++++ .../src/SKP_Silk_VQ_nearest_neighbor_FIX.c | 126 ++ libs/silk/src/SKP_Silk_allpass_int.c | 84 + libs/silk/src/SKP_Silk_ana_filt_bank_1.c | 88 + libs/silk/src/SKP_Silk_apply_sine_window.c | 108 ++ libs/silk/src/SKP_Silk_array_maxabs.c | 75 + libs/silk/src/SKP_Silk_autocorr.c | 97 ++ libs/silk/src/SKP_Silk_biquad.c | 88 + libs/silk/src/SKP_Silk_biquad_alt.c | 84 + libs/silk/src/SKP_Silk_burg_modified.c | 253 +++ libs/silk/src/SKP_Silk_bwexpander.c | 60 + libs/silk/src/SKP_Silk_bwexpander_32.c | 58 + libs/silk/src/SKP_Silk_code_signs.c | 103 ++ .../src/SKP_Silk_common_pitch_est_defines.h | 86 + libs/silk/src/SKP_Silk_control_codec_FIX.c | 731 ++++++++ libs/silk/src/SKP_Silk_corrMatrix_FIX.c | 172 ++ libs/silk/src/SKP_Silk_create_init_destroy.c | 70 + libs/silk/src/SKP_Silk_dec_API.c | 384 +++++ libs/silk/src/SKP_Silk_decode_core.c | 285 ++++ libs/silk/src/SKP_Silk_decode_frame.c | 193 +++ libs/silk/src/SKP_Silk_decode_indices_v4.c | 221 +++ libs/silk/src/SKP_Silk_decode_parameters.c | 274 +++ libs/silk/src/SKP_Silk_decode_parameters_v4.c | 181 ++ libs/silk/src/SKP_Silk_decode_pulses.c | 121 ++ libs/silk/src/SKP_Silk_decoder_set_fs.c | 97 ++ libs/silk/src/SKP_Silk_define.h | 371 +++++ libs/silk/src/SKP_Silk_define_FIX.h | 113 ++ libs/silk/src/SKP_Silk_detect_SWB_input.c | 92 ++ libs/silk/src/SKP_Silk_enc_API.c | 303 ++++ libs/silk/src/SKP_Silk_encode_frame_FIX.c | 481 ++++++ libs/silk/src/SKP_Silk_encode_parameters.c | 186 +++ libs/silk/src/SKP_Silk_encode_parameters_v4.c | 204 +++ libs/silk/src/SKP_Silk_encode_pulses.c | 220 +++ libs/silk/src/SKP_Silk_find_LPC_FIX.c | 172 ++ libs/silk/src/SKP_Silk_find_LTP_FIX.c | 264 +++ libs/silk/src/SKP_Silk_find_pitch_lags_FIX.c | 137 ++ libs/silk/src/SKP_Silk_find_pred_coefs_FIX.c | 168 ++ libs/silk/src/SKP_Silk_gain_quant.c | 110 ++ libs/silk/src/SKP_Silk_init_encoder_FIX.c | 75 + libs/silk/src/SKP_Silk_inner_prod_aligned.c | 116 ++ libs/silk/src/SKP_Silk_interpolate.c | 58 + libs/silk/src/SKP_Silk_k2a.c | 68 + libs/silk/src/SKP_Silk_k2a_Q16.c | 83 + libs/silk/src/SKP_Silk_lin2log.c | 63 + libs/silk/src/SKP_Silk_log2lin.c | 69 + libs/silk/src/SKP_Silk_lowpass_int.c | 72 + libs/silk/src/SKP_Silk_lowpass_short.c | 76 + libs/silk/src/SKP_Silk_macros.h | 143 ++ libs/silk/src/SKP_Silk_main.h | 456 +++++ libs/silk/src/SKP_Silk_main_FIX.h | 361 ++++ .../src/SKP_Silk_noise_shape_analysis_FIX.c | 379 +++++ .../src/SKP_Silk_perceptual_parameters_FIX.h | 142 ++ libs/silk/src/SKP_Silk_pitch_analysis_core.c | 840 ++++++++++ libs/silk/src/SKP_Silk_pitch_est_defines.h | 52 + libs/silk/src/SKP_Silk_pitch_est_tables.c | 105 ++ libs/silk/src/SKP_Silk_prefilter_FIX.c | 187 +++ libs/silk/src/SKP_Silk_process_NLSFs_FIX.c | 143 ++ libs/silk/src/SKP_Silk_process_gains_FIX.c | 135 ++ libs/silk/src/SKP_Silk_pulses_to_bytes.c | 92 ++ libs/silk/src/SKP_Silk_quant_LTP_gains_FIX.c | 127 ++ libs/silk/src/SKP_Silk_range_coder.c | 423 +++++ .../SKP_Silk_regularize_correlations_FIX.c | 52 + libs/silk/src/SKP_Silk_resample_1_2.c | 88 + libs/silk/src/SKP_Silk_resample_1_2_coarse.c | 90 + .../silk/src/SKP_Silk_resample_1_2_coarsest.c | 84 + libs/silk/src/SKP_Silk_resample_1_3.c | 117 ++ libs/silk/src/SKP_Silk_resample_2_1_coarse.c | 84 + libs/silk/src/SKP_Silk_resample_2_3.c | 89 + libs/silk/src/SKP_Silk_resample_2_3_coarse.c | 130 ++ .../silk/src/SKP_Silk_resample_2_3_coarsest.c | 147 ++ libs/silk/src/SKP_Silk_resample_2_3_rom.c | 63 + libs/silk/src/SKP_Silk_resample_3_1.c | 116 ++ libs/silk/src/SKP_Silk_resample_3_2.c | 84 + libs/silk/src/SKP_Silk_resample_3_2_rom.c | 62 + libs/silk/src/SKP_Silk_resample_3_4.c | 90 + libs/silk/src/SKP_Silk_resample_4_3.c | 93 ++ libs/silk/src/SKP_Silk_resample_rom.h | 123 ++ .../silk/src/SKP_Silk_residual_energy16_FIX.c | 119 ++ libs/silk/src/SKP_Silk_residual_energy_FIX.c | 105 ++ libs/silk/src/SKP_Silk_scale_copy_vector16.c | 100 ++ libs/silk/src/SKP_Silk_scale_vector.c | 137 ++ libs/silk/src/SKP_Silk_schur.c | 107 ++ libs/silk/src/SKP_Silk_schur64.c | 96 ++ libs/silk/src/SKP_Silk_shell_coder.c | 175 ++ libs/silk/src/SKP_Silk_sigm_Q15.c | 94 ++ libs/silk/src/SKP_Silk_solve_LS_FIX.c | 271 +++ libs/silk/src/SKP_Silk_sort.c | 220 +++ libs/silk/src/SKP_Silk_structs.h | 426 +++++ libs/silk/src/SKP_Silk_structs_FIX.h | 221 +++ libs/silk/src/SKP_Silk_sum_sqr_shift.c | 117 ++ libs/silk/src/SKP_Silk_tables.h | 205 +++ libs/silk/src/SKP_Silk_tables_FIX.h | 43 + libs/silk/src/SKP_Silk_tables_NLSF_CB0_10.c | 990 +++++++++++ libs/silk/src/SKP_Silk_tables_NLSF_CB0_10.h | 62 + libs/silk/src/SKP_Silk_tables_NLSF_CB0_16.c | 1463 +++++++++++++++++ libs/silk/src/SKP_Silk_tables_NLSF_CB0_16.h | 62 + libs/silk/src/SKP_Silk_tables_NLSF_CB1_10.c | 642 ++++++++ libs/silk/src/SKP_Silk_tables_NLSF_CB1_10.h | 61 + libs/silk/src/SKP_Silk_tables_NLSF_CB1_16.c | 784 +++++++++ libs/silk/src/SKP_Silk_tables_NLSF_CB1_16.h | 62 + libs/silk/src/SKP_Silk_tables_gain.c | 92 ++ libs/silk/src/SKP_Silk_tables_ltp.c | 365 ++++ libs/silk/src/SKP_Silk_tables_other.c | 171 ++ libs/silk/src/SKP_Silk_tables_pitch_lag.c | 230 +++ .../src/SKP_Silk_tables_pulses_per_block.c | 264 +++ libs/silk/src/SKP_Silk_tables_sign.c | 162 ++ libs/silk/src/SKP_Silk_tables_type_offset.c | 61 + libs/silk/test/Decoder.c | 408 +++++ libs/silk/test/Encoder.c | 354 ++++ 141 files changed, 28410 insertions(+) create mode 100644 libs/silk/Makefile create mode 100644 libs/silk/interface/SKP_Silk_SDK_API.h create mode 100644 libs/silk/interface/SKP_Silk_control.h create mode 100644 libs/silk/interface/SKP_Silk_errors.h create mode 100644 libs/silk/interface/SKP_Silk_typedef.h create mode 100644 libs/silk/src/SKP_Silk_A2NLSF.c create mode 100644 libs/silk/src/SKP_Silk_CNG.c create mode 100644 libs/silk/src/SKP_Silk_HP_variable_cutoff_FIX.c create mode 100644 libs/silk/src/SKP_Silk_Inlines.h create mode 100644 libs/silk/src/SKP_Silk_LBRR_reset.c create mode 100644 libs/silk/src/SKP_Silk_LPC_inv_pred_gain.c create mode 100644 libs/silk/src/SKP_Silk_LPC_stabilize.c create mode 100644 libs/silk/src/SKP_Silk_LPC_synthesis_filter.c create mode 100644 libs/silk/src/SKP_Silk_LPC_synthesis_order16.c create mode 100644 libs/silk/src/SKP_Silk_LP_variable_cutoff.c create mode 100644 libs/silk/src/SKP_Silk_LSF_cos_table.c create mode 100644 libs/silk/src/SKP_Silk_LTP_analysis_filter_FIX.c create mode 100644 libs/silk/src/SKP_Silk_LTP_scale_ctrl_FIX.c create mode 100644 libs/silk/src/SKP_Silk_MA.c create mode 100644 libs/silk/src/SKP_Silk_NLSF2A.c create mode 100644 libs/silk/src/SKP_Silk_NLSF2A_stable.c create mode 100644 libs/silk/src/SKP_Silk_NLSF_MSVQ_decode.c create mode 100644 libs/silk/src/SKP_Silk_NLSF_MSVQ_encode_FIX.c create mode 100644 libs/silk/src/SKP_Silk_NLSF_VQ_nearest_neighbor_FIX.c create mode 100644 libs/silk/src/SKP_Silk_NLSF_VQ_sum_error_FIX.c create mode 100644 libs/silk/src/SKP_Silk_NLSF_VQ_weights_laroia.c create mode 100644 libs/silk/src/SKP_Silk_NLSF_stabilize.c create mode 100644 libs/silk/src/SKP_Silk_NSQ.c create mode 100644 libs/silk/src/SKP_Silk_NSQ_del_dec.c create mode 100644 libs/silk/src/SKP_Silk_PLC.c create mode 100644 libs/silk/src/SKP_Silk_PLC.h create mode 100644 libs/silk/src/SKP_Silk_SigProc_FIX.h create mode 100644 libs/silk/src/SKP_Silk_VAD.c create mode 100644 libs/silk/src/SKP_Silk_VQ_nearest_neighbor_FIX.c create mode 100644 libs/silk/src/SKP_Silk_allpass_int.c create mode 100644 libs/silk/src/SKP_Silk_ana_filt_bank_1.c create mode 100644 libs/silk/src/SKP_Silk_apply_sine_window.c create mode 100644 libs/silk/src/SKP_Silk_array_maxabs.c create mode 100644 libs/silk/src/SKP_Silk_autocorr.c create mode 100644 libs/silk/src/SKP_Silk_biquad.c create mode 100644 libs/silk/src/SKP_Silk_biquad_alt.c create mode 100644 libs/silk/src/SKP_Silk_burg_modified.c create mode 100644 libs/silk/src/SKP_Silk_bwexpander.c create mode 100644 libs/silk/src/SKP_Silk_bwexpander_32.c create mode 100644 libs/silk/src/SKP_Silk_code_signs.c create mode 100644 libs/silk/src/SKP_Silk_common_pitch_est_defines.h create mode 100644 libs/silk/src/SKP_Silk_control_codec_FIX.c create mode 100644 libs/silk/src/SKP_Silk_corrMatrix_FIX.c create mode 100644 libs/silk/src/SKP_Silk_create_init_destroy.c create mode 100644 libs/silk/src/SKP_Silk_dec_API.c create mode 100644 libs/silk/src/SKP_Silk_decode_core.c create mode 100644 libs/silk/src/SKP_Silk_decode_frame.c create mode 100644 libs/silk/src/SKP_Silk_decode_indices_v4.c create mode 100644 libs/silk/src/SKP_Silk_decode_parameters.c create mode 100644 libs/silk/src/SKP_Silk_decode_parameters_v4.c create mode 100644 libs/silk/src/SKP_Silk_decode_pulses.c create mode 100644 libs/silk/src/SKP_Silk_decoder_set_fs.c create mode 100644 libs/silk/src/SKP_Silk_define.h create mode 100644 libs/silk/src/SKP_Silk_define_FIX.h create mode 100644 libs/silk/src/SKP_Silk_detect_SWB_input.c create mode 100644 libs/silk/src/SKP_Silk_enc_API.c create mode 100644 libs/silk/src/SKP_Silk_encode_frame_FIX.c create mode 100644 libs/silk/src/SKP_Silk_encode_parameters.c create mode 100644 libs/silk/src/SKP_Silk_encode_parameters_v4.c create mode 100644 libs/silk/src/SKP_Silk_encode_pulses.c create mode 100644 libs/silk/src/SKP_Silk_find_LPC_FIX.c create mode 100644 libs/silk/src/SKP_Silk_find_LTP_FIX.c create mode 100644 libs/silk/src/SKP_Silk_find_pitch_lags_FIX.c create mode 100644 libs/silk/src/SKP_Silk_find_pred_coefs_FIX.c create mode 100644 libs/silk/src/SKP_Silk_gain_quant.c create mode 100644 libs/silk/src/SKP_Silk_init_encoder_FIX.c create mode 100644 libs/silk/src/SKP_Silk_inner_prod_aligned.c create mode 100644 libs/silk/src/SKP_Silk_interpolate.c create mode 100644 libs/silk/src/SKP_Silk_k2a.c create mode 100644 libs/silk/src/SKP_Silk_k2a_Q16.c create mode 100644 libs/silk/src/SKP_Silk_lin2log.c create mode 100644 libs/silk/src/SKP_Silk_log2lin.c create mode 100644 libs/silk/src/SKP_Silk_lowpass_int.c create mode 100644 libs/silk/src/SKP_Silk_lowpass_short.c create mode 100644 libs/silk/src/SKP_Silk_macros.h create mode 100644 libs/silk/src/SKP_Silk_main.h create mode 100644 libs/silk/src/SKP_Silk_main_FIX.h create mode 100644 libs/silk/src/SKP_Silk_noise_shape_analysis_FIX.c create mode 100644 libs/silk/src/SKP_Silk_perceptual_parameters_FIX.h create mode 100644 libs/silk/src/SKP_Silk_pitch_analysis_core.c create mode 100644 libs/silk/src/SKP_Silk_pitch_est_defines.h create mode 100644 libs/silk/src/SKP_Silk_pitch_est_tables.c create mode 100644 libs/silk/src/SKP_Silk_prefilter_FIX.c create mode 100644 libs/silk/src/SKP_Silk_process_NLSFs_FIX.c create mode 100644 libs/silk/src/SKP_Silk_process_gains_FIX.c create mode 100644 libs/silk/src/SKP_Silk_pulses_to_bytes.c create mode 100644 libs/silk/src/SKP_Silk_quant_LTP_gains_FIX.c create mode 100644 libs/silk/src/SKP_Silk_range_coder.c create mode 100644 libs/silk/src/SKP_Silk_regularize_correlations_FIX.c create mode 100644 libs/silk/src/SKP_Silk_resample_1_2.c create mode 100644 libs/silk/src/SKP_Silk_resample_1_2_coarse.c create mode 100644 libs/silk/src/SKP_Silk_resample_1_2_coarsest.c create mode 100644 libs/silk/src/SKP_Silk_resample_1_3.c create mode 100644 libs/silk/src/SKP_Silk_resample_2_1_coarse.c create mode 100644 libs/silk/src/SKP_Silk_resample_2_3.c create mode 100644 libs/silk/src/SKP_Silk_resample_2_3_coarse.c create mode 100644 libs/silk/src/SKP_Silk_resample_2_3_coarsest.c create mode 100644 libs/silk/src/SKP_Silk_resample_2_3_rom.c create mode 100644 libs/silk/src/SKP_Silk_resample_3_1.c create mode 100644 libs/silk/src/SKP_Silk_resample_3_2.c create mode 100644 libs/silk/src/SKP_Silk_resample_3_2_rom.c create mode 100644 libs/silk/src/SKP_Silk_resample_3_4.c create mode 100644 libs/silk/src/SKP_Silk_resample_4_3.c create mode 100644 libs/silk/src/SKP_Silk_resample_rom.h create mode 100644 libs/silk/src/SKP_Silk_residual_energy16_FIX.c create mode 100644 libs/silk/src/SKP_Silk_residual_energy_FIX.c create mode 100644 libs/silk/src/SKP_Silk_scale_copy_vector16.c create mode 100644 libs/silk/src/SKP_Silk_scale_vector.c create mode 100644 libs/silk/src/SKP_Silk_schur.c create mode 100644 libs/silk/src/SKP_Silk_schur64.c create mode 100644 libs/silk/src/SKP_Silk_shell_coder.c create mode 100644 libs/silk/src/SKP_Silk_sigm_Q15.c create mode 100644 libs/silk/src/SKP_Silk_solve_LS_FIX.c create mode 100644 libs/silk/src/SKP_Silk_sort.c create mode 100644 libs/silk/src/SKP_Silk_structs.h create mode 100644 libs/silk/src/SKP_Silk_structs_FIX.h create mode 100644 libs/silk/src/SKP_Silk_sum_sqr_shift.c create mode 100644 libs/silk/src/SKP_Silk_tables.h create mode 100644 libs/silk/src/SKP_Silk_tables_FIX.h create mode 100644 libs/silk/src/SKP_Silk_tables_NLSF_CB0_10.c create mode 100644 libs/silk/src/SKP_Silk_tables_NLSF_CB0_10.h create mode 100644 libs/silk/src/SKP_Silk_tables_NLSF_CB0_16.c create mode 100644 libs/silk/src/SKP_Silk_tables_NLSF_CB0_16.h create mode 100644 libs/silk/src/SKP_Silk_tables_NLSF_CB1_10.c create mode 100644 libs/silk/src/SKP_Silk_tables_NLSF_CB1_10.h create mode 100644 libs/silk/src/SKP_Silk_tables_NLSF_CB1_16.c create mode 100644 libs/silk/src/SKP_Silk_tables_NLSF_CB1_16.h create mode 100644 libs/silk/src/SKP_Silk_tables_gain.c create mode 100644 libs/silk/src/SKP_Silk_tables_ltp.c create mode 100644 libs/silk/src/SKP_Silk_tables_other.c create mode 100644 libs/silk/src/SKP_Silk_tables_pitch_lag.c create mode 100644 libs/silk/src/SKP_Silk_tables_pulses_per_block.c create mode 100644 libs/silk/src/SKP_Silk_tables_sign.c create mode 100644 libs/silk/src/SKP_Silk_tables_type_offset.c create mode 100644 libs/silk/test/Decoder.c create mode 100644 libs/silk/test/Encoder.c diff --git a/libs/silk/Makefile b/libs/silk/Makefile new file mode 100644 index 0000000000..1daf976fae --- /dev/null +++ b/libs/silk/Makefile @@ -0,0 +1,109 @@ +# +# Makefile for Silk SDK +# +# Copyright (c) 2009, Skype Limited +# All rights reserved. +# + +#Platform detection and settings + +BUILD_OS := $(shell uname | sed -e 's/^.*Darwin.*/MacOS-X/ ; s/^.*CYGWIN.*/Windows/') + +BUILD_ARCHITECTURE := $(shell uname -m | sed -e 's/i686/i386/') + +EXESUFFIX = +LIBPREFIX = lib +LIBSUFFIX = .a +OBJSUFFIX = .o + +CC = $(TOOLCHAIN_PREFIX)gcc$(TOOLCHAIN_SUFFIX) +CXX = $(TOOLCHAIN_PREFIX)g++$(TOOLCHAIN_SUFFIX) +AR = $(TOOLCHAIN_PREFIX)ar +RANLIB = $(TOOLCHAIN_PREFIX)ranlib +CP = $(TOOLCHAIN_PREFIX)cp + +cppflags-from-defines = $(addprefix -D,$(1)) +cppflags-from-includes = $(addprefix -I,$(1)) +ldflags-from-ldlibdirs = $(addprefix -L,$(1)) +ldlibs-from-libs = $(addprefix -l,$(1)) + +CFLAGS += -Wall -enable-threads -O3 + +CFLAGS += $(call cppflags-from-defines,$(CDEFINES)) +CFLAGS += $(call cppflags-from-includes,$(CINCLUDES)) +LDFLAGS += $(call ldflags-from-ldlibdirs,$(LDLIBDIRS)) +LDLIBS += $(call ldlibs-from-libs,$(LIBS)) + +COMPILE.c.cmdline = $(CC) -c $(CFLAGS) -o $@ $< +COMPILE.cpp.cmdline = $(CXX) -c $(CFLAGS) -o $@ $< +LINK.o = $(CXX) $(LDPREFLAGS) $(LDFLAGS) +LINK.o.cmdline = $(LINK.o) $^ $(LDLIBS) -o $@$(EXESUFFIX) + + + + + +ARCHIVE.cmdline = $(AR) $(ARFLAGS) $@ $^ && $(RANLIB) $@ + +%$(OBJSUFFIX):%.c + $(COMPILE.c.cmdline) + +%$(OBJSUFFIX):%.cpp + $(COMPILE.cpp.cmdline) + +# Directives + +CINCLUDES += interface src test + +# VPATH e.g. VPATH = src:../headers +VPATH = ./ \ + interface \ + src \ + test + +# Variable definitions +LIB_NAME = SKP_SILK_SDK +TARGET = $(LIBPREFIX)$(LIB_NAME)$(LIBSUFFIX) + +SRCS_C = $(wildcard src/*.c) + +OBJS := $(patsubst %.c,%$(OBJSUFFIX),$(SRCS_C)) + +ENCODER_SRCS_C = test/Encoder.c +ENCODER_OBJS := $(patsubst %.c,%$(OBJSUFFIX),$(ENCODER_SRCS_C)) + +DECODER_SRCS_C = test/Decoder.c +DECODER_OBJS := $(patsubst %.c,%$(OBJSUFFIX),$(DECODER_SRCS_C)) + +SIGNALCMP_SRCS_C = test/signalCompare.c +SIGNALCMP_OBJS := $(patsubst %.c,%$(OBJSUFFIX),$(SIGNALCMP_SRCS_C)) + +LIBS = \ + $(LIB_NAME) + +LDLIBDIRS = ./ + +# Rules +default: all + +all: $(TARGET) +#all: $(TARGET) encoder decoder signalcompare + +lib: $(TARGET) + +$(TARGET): $(OBJS) + $(ARCHIVE.cmdline) + +encoder$(EXESUFFIX): $(ENCODER_OBJS) + $(LINK.o.cmdline) + +decoder$(EXESUFFIX): $(DECODER_OBJS) + $(LINK.o.cmdline) + +signalcompare$(EXESUFFIX): $(SIGNALCMP_OBJS) + $(LINK.o.cmdline) + +clean: + $(RM) $(TARGET)* $(OBJS) $(ENCODER_OBJS) $(DECODER_OBJS) \ + $(SIGNALCMP_OBJS) $(TEST_OBJS) \ + encoder$(EXESUFFIX) decoder$(EXESUFFIX) signalcompare$(EXESUFFIX) diff --git a/libs/silk/interface/SKP_Silk_SDK_API.h b/libs/silk/interface/SKP_Silk_SDK_API.h new file mode 100644 index 0000000000..bc47711f51 --- /dev/null +++ b/libs/silk/interface/SKP_Silk_SDK_API.h @@ -0,0 +1,175 @@ + + +/*********************************************************************** + +Copyright (c) 2006-2010, Skype Limited. All rights reserved. +Redistribution and use in source and binary forms, with or without +modification, (subject to the limitations in the disclaimer below) +are permitted provided that the following conditions are met: +- Redistributions of source code must retain the above copyright notice, +this list of conditions and the following disclaimer. +- Redistributions in binary form must reproduce the above copyright +notice, this list of conditions and the following disclaimer in the +documentation and/or other materials provided with the distribution. +- Neither the name of Skype Limited, nor the names of specific +contributors, may be used to endorse or promote products derived from +this software without specific prior written permission. +NO EXPRESS OR IMPLIED LICENSES TO ANY PARTY'S PATENT RIGHTS ARE GRANTED +BY THIS LICENSE.THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND +CONTRIBUTORS ''AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, +BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND +FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE +COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, +INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT +NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF +USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON +ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT +(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE +OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + + + + + +***********************************************************************/ + +#ifndef SKP_SILK_SDK_API_H +#define SKP_SILK_SDK_API_H + +#include "SKP_Silk_control.h" +#include "SKP_Silk_typedef.h" +#include "SKP_Silk_errors.h" + +#ifdef __cplusplus +extern "C" +{ +#endif + +#define SILK_MAX_FRAMES_PER_PACKET 5 + +/* Struct for TOC (Type Of Content) */ +typedef struct { + SKP_int framesInPacket; /* Number of 20 ms frames in packet */ + SKP_int fs_kHz; /* Sampling frequency in packet */ + SKP_int inbandLBRR; /* Does packet include LBRR information */ + SKP_int corrupt; /* Packet is corrupt */ + SKP_int vadFlags[ SILK_MAX_FRAMES_PER_PACKET ]; /* VAD flags in packet */ + SKP_int sigtypeFlags[ SILK_MAX_FRAMES_PER_PACKET ]; /* Signal types in packet */ +} SKP_Silk_TOC_struct; + +/****************************************/ +/* Encoder functions */ +/****************************************/ + +/***********************************************/ +/* Get size in bytes of the Silk encoder state */ +/***********************************************/ +SKP_int SKP_Silk_SDK_Get_Encoder_Size( + SKP_int32 *encSizeBytes /* O: Number of bytes in SILK encoder state */ +); + +/*************************/ +/* Init or reset encoder */ +/*************************/ +SKP_int SKP_Silk_SDK_InitEncoder( + void *encState, /* I/O: State */ + SKP_SILK_SDK_EncControlStruct *encStatus /* O: Encoder Status */ +); + +/***************************************/ +/* Read control structure from encoder */ +/***************************************/ + + + + + +SKP_int SKP_Silk_SDK_QueryEncoder( + const void *encState, /* I: State */ + SKP_SILK_SDK_EncControlStruct *encStatus /* O: Encoder Status */ +); + +/**************************/ +/* Encode frame with Silk */ +/**************************/ +SKP_int SKP_Silk_SDK_Encode( + void *encState, /* I/O: State */ + const SKP_SILK_SDK_EncControlStruct *encStatus, /* I: Control Status */ + const SKP_int16 *samplesIn, /* I: Speech sample input vector */ + SKP_int nSamplesIn, /* I: Number of samples in input vector */ + SKP_uint8 *outData, /* O: Encoded output vector */ + SKP_int16 *nBytesOut /* I/O: Number of Bytes in outData (input: Max Bytes) */ +); + +/****************************************/ +/* Decoder functions */ +/****************************************/ + +/***********************************************/ +/* Get size in bytes of the Silk decoder state */ +/***********************************************/ +SKP_int SKP_Silk_SDK_Get_Decoder_Size( + SKP_int32 *decSizeBytes /* O: Number of bytes in SILK decoder state */ +); + +/*************************/ +/* Init or Reset decoder */ +/*************************/ +SKP_int SKP_Silk_SDK_InitDecoder( + void *decState /* I/O: State */ +); + +/******************/ +/* Decode a frame */ +/******************/ +SKP_int SKP_Silk_SDK_Decode( + void* decState, /* I/O: State */ + SKP_SILK_SDK_DecControlStruct* decControl, /* I/O: Control Structure */ + SKP_int lostFlag, /* I: 0: no loss, 1 loss */ + const SKP_uint8 *inData, /* I: Encoded input vector */ + const SKP_int nBytesIn, /* I: Number of input Bytes */ + SKP_int16 *samplesOut, /* O: Decoded output speech vector */ + SKP_int16 *nSamplesOut /* I/O: Number of samples (vector/decoded) */ +); + + + + + + +/***************************************************************/ +/* Find Low Bit Rate Redundancy (LBRR) information in a packet */ +/***************************************************************/ +void SKP_Silk_SDK_search_for_LBRR( + void *decState, /* I/O: State Only used to update statistics */ + const SKP_uint8 *indata, /* I: Encoded input vector */ + const SKP_int16 nBytesIn, /* I: Number of input Bytes */ + SKP_int lost_offset, /* I: Offset from lost packet */ + SKP_uint8 *LBRRdata, /* O: FEC payload */ + SKP_int16 *nLBRRBytes /* O: Number of FEC Bytes */ +); + +/************************************/ +/* Get type of content for a packet */ +/************************************/ +void SKP_Silk_SDK_get_TOC( + void *decState, /* I/O: State Only used to select bitstream version */ + const SKP_uint8 *indata, /* I: Encoded input vector */ + const SKP_int16 nBytesIn, /* I: Number of input Bytes */ + SKP_Silk_TOC_struct *Silk_TOC /* O: Type of content */ +); + +/**************************/ +/* Get the version number */ +/**************************/ +/* Return a pointer to string specifying the version */ +const char *SKP_Silk_SDK_get_version(); + +#ifdef __cplusplus +} +#endif + +#endif + + + diff --git a/libs/silk/interface/SKP_Silk_control.h b/libs/silk/interface/SKP_Silk_control.h new file mode 100644 index 0000000000..ff3e1bbe35 --- /dev/null +++ b/libs/silk/interface/SKP_Silk_control.h @@ -0,0 +1,105 @@ + + +/*********************************************************************** + +Copyright (c) 2006-2010, Skype Limited. All rights reserved. +Redistribution and use in source and binary forms, with or without +modification, (subject to the limitations in the disclaimer below) +are permitted provided that the following conditions are met: +- Redistributions of source code must retain the above copyright notice, +this list of conditions and the following disclaimer. +- Redistributions in binary form must reproduce the above copyright +notice, this list of conditions and the following disclaimer in the +documentation and/or other materials provided with the distribution. +- Neither the name of Skype Limited, nor the names of specific +contributors, may be used to endorse or promote products derived from +this software without specific prior written permission. +NO EXPRESS OR IMPLIED LICENSES TO ANY PARTY'S PATENT RIGHTS ARE GRANTED +BY THIS LICENSE.THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND +CONTRIBUTORS ''AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, +BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND +FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE +COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, +INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT +NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF +USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON +ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT +(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE +OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + + + + + + +***********************************************************************/ + +#ifndef SKP_SILK_CONTROL_H +#define SKP_SILK_CONTROL_H + +#include "SKP_Silk_typedef.h" + +#ifdef __cplusplus +extern "C" +{ +#endif + +/***********************************************/ +/* Structure for controlling encoder operation */ +/***********************************************/ +typedef struct { + /* I: Sampling rate in Hertz; 8000/12000/16000/24000 */ + SKP_int sampleRate; + + /* I: Number of samples per packet; must be equivalent of 20, 40, 60, 80 or 100 ms */ + SKP_int packetSize; + + /* I: Bitrate during active speech in bits/second; internally limited */ + SKP_int bitRate; + + /* I: Uplink Packet loss in pct (0...100) */ + SKP_int packetLossPercentage; + + /* I: Complexity mode; 0 is lowest; 1 is medium and 2 is highest complexity */ + SKP_int complexity; + + /* I: Flag to enable in-band Forward Error Correction (FEC); 0/1 */ + SKP_int useInBandFec; + + /* I: Flag to enable Discontinous Transmission; 0/1 */ + SKP_int useDtx; +} SKP_SILK_SDK_EncControlStruct; + +/**************************************************************************/ +/* Structure for controlling decoder operation and reading decoder status */ +/**************************************************************************/ +typedef struct { + /* I: Sampling rate in Hertz; 8000/12000/16000/24000 */ + SKP_int sampleRate; + + /* O: Number of samples per frame */ + SKP_int frameSize; + + + + + + + /* O: Frames per packet 1, 2, 3, 4, 5 */ + SKP_int framesPerPacket; + + /* O: Flag to indicate that the decoder has remaining payloads internally */ + SKP_int internalDecoderFrames; + + /* O: Distance between main payload and redundant payload in packets */ + SKP_int inBandFecOffset; +} SKP_SILK_SDK_DecControlStruct; + +#ifdef __cplusplus +} +#endif + +#endif + + + diff --git a/libs/silk/interface/SKP_Silk_errors.h b/libs/silk/interface/SKP_Silk_errors.h new file mode 100644 index 0000000000..44ceef4008 --- /dev/null +++ b/libs/silk/interface/SKP_Silk_errors.h @@ -0,0 +1,106 @@ + + +/*********************************************************************** + +Copyright (c) 2006-2010, Skype Limited. All rights reserved. +Redistribution and use in source and binary forms, with or without +modification, (subject to the limitations in the disclaimer below) +are permitted provided that the following conditions are met: +- Redistributions of source code must retain the above copyright notice, +this list of conditions and the following disclaimer. +- Redistributions in binary form must reproduce the above copyright +notice, this list of conditions and the following disclaimer in the +documentation and/or other materials provided with the distribution. +- Neither the name of Skype Limited, nor the names of specific +contributors, may be used to endorse or promote products derived from +this software without specific prior written permission. +NO EXPRESS OR IMPLIED LICENSES TO ANY PARTY'S PATENT RIGHTS ARE GRANTED +BY THIS LICENSE.THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND +CONTRIBUTORS ''AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, +BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND +FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE +COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, +INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT +NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF +USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON +ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT +(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE +OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + + + + + + +***********************************************************************/ + +#ifndef SKP_SILK_ERRORS_H +#define SKP_SILK_ERRORS_H + +#ifdef __cplusplus +extern "C" +{ +#endif + +/******************/ +/* Error messages */ +/******************/ +#define SKP_SILK_NO_ERROR 0 + +/**************************/ +/* Encoder error messages */ +/**************************/ + +/* Input length is not a multiplum of 10 ms, or length is longer than the packet length */ +#define SKP_SILK_ENC_INPUT_INVALID_NO_OF_SAMPLES -1 + +/* Sampling frequency not 8000, 12000, 16000 or 24000 Hertz */ +#define SKP_SILK_ENC_FS_NOT_SUPPORTED -2 + +/* Packet size not 20, 40, 60, 80 or 100 ms */ +#define SKP_SILK_ENC_PACKET_SIZE_NOT_SUPPORTED -3 + +/* Allocated payload buffer too short */ +#define SKP_SILK_ENC_PAYLOAD_BUF_TOO_SHORT -4 + +/* Loss rate not between 0 and 100 percent */ +#define SKP_SILK_ENC_WRONG_LOSS_RATE -5 + +/* Complexity setting not valid, use 0, 1 or 2 */ +#define SKP_SILK_ENC_WRONG_COMPLEXITY_SETTING -6 + +/* Inband FEC setting not valid, use 0 or 1 */ +#define SKP_SILK_ENC_WRONG_INBAND_FEC_SETTING -7 + +/* DTX setting not valid, use 0 or 1 */ +#define SKP_SILK_ENC_WRONG_DTX_SETTING -8 + +/* Internal encoder error */ +#define SKP_SILK_ENC_INTERNAL_ERROR -9 + +/**************************/ +/* Decoder error messages */ + + + + + +/**************************/ + +/* Output sampling frequency lower than internal decoded sampling frequency */ +#define SKP_SILK_DEC_WRONG_SAMPLING_FREQUENCY -10 + +/* Payload size exceeded the maximum allowed 1024 bytes */ +#define SKP_SILK_DEC_PAYLOAD_TOO_LARGE -11 + +/* Payload has bit errors */ +#define SKP_SILK_DEC_PAYLOAD_ERROR -12 + + +#ifdef __cplusplus +} +#endif + +#endif + + diff --git a/libs/silk/interface/SKP_Silk_typedef.h b/libs/silk/interface/SKP_Silk_typedef.h new file mode 100644 index 0000000000..12fbdbcde1 --- /dev/null +++ b/libs/silk/interface/SKP_Silk_typedef.h @@ -0,0 +1,116 @@ + + +/*********************************************************************** + +Copyright (c) 2006-2010, Skype Limited. All rights reserved. +Redistribution and use in source and binary forms, with or without +modification, (subject to the limitations in the disclaimer below) +are permitted provided that the following conditions are met: +- Redistributions of source code must retain the above copyright notice, +this list of conditions and the following disclaimer. +- Redistributions in binary form must reproduce the above copyright + + + + + +notice, this list of conditions and the following disclaimer in the +documentation and/or other materials provided with the distribution. +- Neither the name of Skype Limited, nor the names of specific +contributors, may be used to endorse or promote products derived from +this software without specific prior written permission. +NO EXPRESS OR IMPLIED LICENSES TO ANY PARTY'S PATENT RIGHTS ARE GRANTED +BY THIS LICENSE.THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND +CONTRIBUTORS ''AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, +BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND +FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE +COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, +INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT +NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF +USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON +ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT +(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE +OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + +***********************************************************************/ + +#ifndef _SKP_SILK_API_TYPDEF_H_ +#define _SKP_SILK_API_TYPDEF_H_ + +#ifndef SKP_USE_DOUBLE_PRECISION_FLOATS +#define SKP_USE_DOUBLE_PRECISION_FLOATS 0 +#endif + +#include +#if defined( __GNUC__ ) +#include +#endif + +# define SKP_int int /* used for counters etc; at least 16 bits */ +# define SKP_int64 long long +# define SKP_int32 int +# define SKP_int16 short +# define SKP_int8 signed char + +# define SKP_uint unsigned int /* used for counters etc; at least 16 bits */ +# define SKP_uint64 unsigned long long +# define SKP_uint32 unsigned int +# define SKP_uint16 unsigned short +# define SKP_uint8 unsigned char + +# define SKP_int_ptr_size intptr_t + +# if SKP_USE_DOUBLE_PRECISION_FLOATS +# define SKP_float double + + + + + +# define SKP_float_MAX DBL_MAX +# else +# define SKP_float float +# define SKP_float_MAX FLT_MAX +# endif + +# define SKP_INLINE static __inline + +#ifdef _WIN32 +# define SKP_STR_CASEINSENSITIVE_COMPARE(x, y) _stricmp(x, y) +#else +# define SKP_STR_CASEINSENSITIVE_COMPARE(x, y) strcasecmp(x, y) +#endif + +#define SKP_int64_MAX ((SKP_int64)0x7FFFFFFFFFFFFFFFLL) // 2^63 - 1 +#define SKP_int64_MIN ((SKP_int64)0x8000000000000000LL) // -2^63 +#define SKP_int32_MAX 0x7FFFFFFF // 2^31 - 1 = 2147483647 +#define SKP_int32_MIN ((SKP_int32)0x80000000) // -2^31 = -2147483648 +#define SKP_int16_MAX 0x7FFF // 2^15 - 1 = 32767 +#define SKP_int16_MIN ((SKP_int16)0x8000) // -2^15 = -32768 +#define SKP_int8_MAX 0x7F // 2^7 - 1 = 127 +#define SKP_int8_MIN ((SKP_int8)0x80) // -2^7 = -128 + +#define SKP_uint32_MAX 0xFFFFFFFF // 2^32 - 1 = 4294967295 +#define SKP_uint32_MIN 0x00000000 +#define SKP_uint16_MAX 0xFFFF // 2^16 - 1 = 65535 +#define SKP_uint16_MIN 0x0000 +#define SKP_uint8_MAX 0xFF // 2^8 - 1 = 255 +#define SKP_uint8_MIN 0x00 + +#define SKP_TRUE 1 +#define SKP_FALSE 0 + +/* assertions */ +#if (defined _WIN32 && !defined _WINCE && !defined(__GNUC__) && !defined(NO_ASSERTS)) +# ifndef SKP_assert +# include /* ASSERTE() */ +# define SKP_assert(COND) _ASSERTE(COND) +# endif +#else +# define SKP_assert(COND) +#endif + +#endif /* _SKP_SILK_API_TYPDEF_H_ */ + + + diff --git a/libs/silk/src/SKP_Silk_A2NLSF.c b/libs/silk/src/SKP_Silk_A2NLSF.c new file mode 100644 index 0000000000..2fb5fd88b0 --- /dev/null +++ b/libs/silk/src/SKP_Silk_A2NLSF.c @@ -0,0 +1,314 @@ + + + + + +/*********************************************************************** + +Copyright (c) 2006-2010, Skype Limited. All rights reserved. +Redistribution and use in source and binary forms, with or without +modification, (subject to the limitations in the disclaimer below) +are permitted provided that the following conditions are met: +- Redistributions of source code must retain the above copyright notice, +this list of conditions and the following disclaimer. +- Redistributions in binary form must reproduce the above copyright +notice, this list of conditions and the following disclaimer in the +documentation and/or other materials provided with the distribution. +- Neither the name of Skype Limited, nor the names of specific +contributors, may be used to endorse or promote products derived from +this software without specific prior written permission. +NO EXPRESS OR IMPLIED LICENSES TO ANY PARTY'S PATENT RIGHTS ARE GRANTED +BY THIS LICENSE.THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND +CONTRIBUTORS ''AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, +BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND +FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE +COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, +INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT +NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF +USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON +ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT +(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE +OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + +***********************************************************************/ + +/* Conversion between prediction filter coefficients and NLSFs */ +/* Requires the order to be an even number */ +/* A piecewise linear approximation maps LSF <-> cos(LSF) */ +/* Therefore the result is not accurate NLSFs, but the two */ +/* function are accurate inverses of each other */ + +#include "SKP_Silk_SigProc_FIX.h" + +/* Number of binary divisions, when not in low complexity mode */ +#define BIN_DIV_STEPS_A2NLSF_FIX 2 /* must be no higher than 16 - log2( LSF_COS_TAB_SZ_FIX ) */ +#define QPoly 16 +#define MAX_ITERATIONS_A2NLSF_FIX 50 + +/* Flag for using 2x as many cosine sampling points, reduces the risk of missing a root */ +#define OVERSAMPLE_COSINE_TABLE 0 + +/* Helper function for A2NLSF(..) */ +/* Transforms polynomials from cos(n*f) to cos(f)^n */ +SKP_INLINE void SKP_Silk_A2NLSF_trans_poly( + + + + + + SKP_int32 *p, /* I/O Polynomial */ + const SKP_int dd /* I Polynomial order (= filter order / 2 ) */ +) +{ + SKP_int k, n; + + for( k = 2; k <= dd; k++ ) { + for( n = dd; n > k; n-- ) { + p[ n - 2 ] -= p[ n ]; + } + p[ k - 2 ] -= SKP_LSHIFT( p[ k ], 1 ); + } +} + +/* Helper function for A2NLSF(..) */ +/* Polynomial evaluation */ +SKP_INLINE SKP_int32 SKP_Silk_A2NLSF_eval_poly( /* return the polynomial evaluation, in QPoly */ + SKP_int32 *p, /* I Polynomial, QPoly */ + const SKP_int32 x, /* I Evaluation point, Q12 */ + const SKP_int dd /* I Order */ +) +{ + SKP_int n; + SKP_int32 x_Q16, y32; + + y32 = p[ dd ]; /* QPoly */ + x_Q16 = SKP_LSHIFT( x, 4 ); + for( n = dd - 1; n >= 0; n-- ) { + y32 = SKP_SMLAWW( p[ n ], y32, x_Q16 ); /* QPoly */ + } + return y32; +} + +SKP_INLINE void SKP_Silk_A2NLSF_init( + const SKP_int32 *a_Q16, + SKP_int32 *P, + SKP_int32 *Q, + const SKP_int dd +) +{ + SKP_int k; + + /* Convert filter coefs to even and odd polynomials */ + P[dd] = SKP_LSHIFT( 1, QPoly ); + Q[dd] = SKP_LSHIFT( 1, QPoly ); + for( k = 0; k < dd; k++ ) { +#if( QPoly < 16 ) + P[ k ] = SKP_RSHIFT_ROUND( -a_Q16[ dd - k - 1 ] - a_Q16[ dd + k ], 16 - QPoly ); /* QPoly */ + + + + + + Q[ k ] = SKP_RSHIFT_ROUND( -a_Q16[ dd - k - 1 ] + a_Q16[ dd + k ], 16 - QPoly ); /* QPoly */ +#elif( Qpoly == 16 ) + P[ k ] = -a_Q16[ dd - k - 1 ] - a_Q16[ dd + k ]; // QPoly + Q[ k ] = -a_Q16[ dd - k - 1 ] + a_Q16[ dd + k ]; // QPoly +#else + P[ k ] = SKP_LSHIFT( -a_Q16[ dd - k - 1 ] - a_Q16[ dd + k ], QPoly - 16 ); /* QPoly */ + Q[ k ] = SKP_LSHIFT( -a_Q16[ dd - k - 1 ] + a_Q16[ dd + k ], QPoly - 16 ); /* QPoly */ +#endif + } + + /* Divide out zeros as we have that for even filter orders, */ + /* z = 1 is always a root in Q, and */ + /* z = -1 is always a root in P */ + for( k = dd; k > 0; k-- ) { + P[ k - 1 ] -= P[ k ]; + Q[ k - 1 ] += Q[ k ]; + } + + /* Transform polynomials from cos(n*f) to cos(f)^n */ + SKP_Silk_A2NLSF_trans_poly( P, dd ); + SKP_Silk_A2NLSF_trans_poly( Q, dd ); +} + +/* Compute Normalized Line Spectral Frequencies (NLSFs) from whitening filter coefficients */ +/* If not all roots are found, the a_Q16 coefficients are bandwidth expanded until convergence. */ +void SKP_Silk_A2NLSF( + SKP_int *NLSF, /* O Normalized Line Spectral Frequencies, Q15 (0 - (2^15-1)), [d] */ + SKP_int32 *a_Q16, /* I/O Monic whitening filter coefficients in Q16 [d] */ + const SKP_int d /* I Filter order (must be even) */ +) +{ + SKP_int i, k, m, dd, root_ix, ffrac; + SKP_int32 xlo, xhi, xmid; + SKP_int32 ylo, yhi, ymid; + SKP_int32 nom, den; + SKP_int32 P[ SigProc_MAX_ORDER_LPC / 2 + 1 ]; + SKP_int32 Q[ SigProc_MAX_ORDER_LPC / 2 + 1 ]; + SKP_int32 *PQ[ 2 ]; + SKP_int32 *p; + + /* Store pointers to array */ + PQ[ 0 ] = P; + PQ[ 1 ] = Q; + + dd = SKP_RSHIFT( d, 1 ); + + SKP_Silk_A2NLSF_init( a_Q16, P, Q, dd ); + + + + + + + /* Find roots, alternating between P and Q */ + p = P; /* Pointer to polynomial */ + + xlo = SKP_Silk_LSFCosTab_FIX_Q12[ 0 ]; // Q12 + ylo = SKP_Silk_A2NLSF_eval_poly( p, xlo, dd ); + + if( ylo < 0 ) { + /* Set the first NLSF to zero and move on to the next */ + NLSF[ 0 ] = 0; + p = Q; /* Pointer to polynomial */ + ylo = SKP_Silk_A2NLSF_eval_poly( p, xlo, dd ); + root_ix = 1; /* Index of current root */ + } else { + root_ix = 0; /* Index of current root */ + } + k = 1; /* Loop counter */ + i = 0; /* Counter for bandwidth expansions applied */ + while( 1 ) { + /* Evaluate polynomial */ +#if OVERSAMPLE_COSINE_TABLE + xhi = SKP_Silk_LSFCosTab_FIX_Q12[ k >> 1 ] + + ( ( SKP_Silk_LSFCosTab_FIX_Q12[ ( k + 1 ) >> 1 ] - + SKP_Silk_LSFCosTab_FIX_Q12[ k >> 1 ] ) >> 1 ); /* Q12 */ +#else + xhi = SKP_Silk_LSFCosTab_FIX_Q12[ k ]; /* Q12 */ +#endif + yhi = SKP_Silk_A2NLSF_eval_poly( p, xhi, dd ); + + /* Detect zero crossing */ + if( ( ylo <= 0 && yhi >= 0 ) || ( ylo >= 0 && yhi <= 0 ) ) { + /* Binary division */ +#if OVERSAMPLE_COSINE_TABLE + ffrac = -128; +#else + ffrac = -256; +#endif + for( m = 0; m < BIN_DIV_STEPS_A2NLSF_FIX; m++ ) { + /* Evaluate polynomial */ + xmid = SKP_RSHIFT_ROUND( xlo + xhi, 1 ); + ymid = SKP_Silk_A2NLSF_eval_poly( p, xmid, dd ); + + /* Detect zero crossing */ + if( ( ylo <= 0 && ymid >= 0 ) || ( ylo >= 0 && ymid <= 0 ) ) { + /* Reduce frequency */ + xhi = xmid; + yhi = ymid; + } else { + /* Increase frequency */ + + + + + + xlo = xmid; + ylo = ymid; +#if OVERSAMPLE_COSINE_TABLE + ffrac = SKP_ADD_RSHIFT( ffrac, 64, m ); +#else + ffrac = SKP_ADD_RSHIFT( ffrac, 128, m ); +#endif + } + } + + /* Interpolate */ + if( SKP_abs( ylo ) < 65536 ) { + /* Avoid dividing by zero */ + den = ylo - yhi; + nom = SKP_LSHIFT( ylo, 8 - BIN_DIV_STEPS_A2NLSF_FIX ) + SKP_RSHIFT( den, 1 ); + if( den != 0 ) { + ffrac += SKP_DIV32( nom, den ); + } + } else { + /* No risk of dividing by zero because abs(ylo - yhi) >= abs(ylo) >= 65536 */ + ffrac += SKP_DIV32( ylo, SKP_RSHIFT( ylo - yhi, 8 - BIN_DIV_STEPS_A2NLSF_FIX ) ); + } +#if OVERSAMPLE_COSINE_TABLE + NLSF[ root_ix ] = (SKP_int)SKP_min_32( SKP_LSHIFT( (SKP_int32)k, 7 ) + ffrac, SKP_int16_MAX ); +#else + NLSF[ root_ix ] = (SKP_int)SKP_min_32( SKP_LSHIFT( (SKP_int32)k, 8 ) + ffrac, SKP_int16_MAX ); +#endif + + SKP_assert( NLSF[ root_ix ] >= 0 ); + SKP_assert( NLSF[ root_ix ] <= 32767 ); + + root_ix++; /* Next root */ + if( root_ix >= d ) { + /* Found all roots */ + break; + } + /* Alternate pointer to polynomial */ + p = PQ[ root_ix & 1 ]; + + /* Evaluate polynomial */ +#if OVERSAMPLE_COSINE_TABLE + xlo = SKP_Silk_LSFCosTab_FIX_Q12[ ( k - 1 ) >> 1 ] + + ( ( SKP_Silk_LSFCosTab_FIX_Q12[ k >> 1 ] - + SKP_Silk_LSFCosTab_FIX_Q12[ ( k - 1 ) >> 1 ] ) >> 1 ); // Q12 +#else + xlo = SKP_Silk_LSFCosTab_FIX_Q12[ k - 1 ]; // Q12 +#endif + ylo = SKP_LSHIFT( 1 - ( root_ix & 2 ), 12 ); + + + + + + } else { + /* Increment loop counter */ + k++; + xlo = xhi; + ylo = yhi; + +#if OVERSAMPLE_COSINE_TABLE + if( k > 2 * LSF_COS_TAB_SZ_FIX ) { +#else + if( k > LSF_COS_TAB_SZ_FIX ) { +#endif + i++; + if( i > MAX_ITERATIONS_A2NLSF_FIX ) { + /* Set NLSFs to white spectrum and exit */ + NLSF[ 0 ] = SKP_DIV32_16( 1 << 15, d + 1 ); + for( k = 1; k < d; k++ ) { + NLSF[ k ] = SKP_SMULBB( k + 1, NLSF[ 0 ] ); + } + return; + } + + /* Error: Apply progressively more bandwidth expansion and run again */ + SKP_Silk_bwexpander_32( a_Q16, d, 65536 - SKP_SMULBB( 66, i ) ); // 66_Q16 = 0.001 + + SKP_Silk_A2NLSF_init( a_Q16, P, Q, dd ); + p = P; /* Pointer to polynomial */ + xlo = SKP_Silk_LSFCosTab_FIX_Q12[ 0 ]; // Q12 + ylo = SKP_Silk_A2NLSF_eval_poly( p, xlo, dd ); + if( ylo < 0 ) { + /* Set the first NLSF to zero and move on to the next */ + NLSF[ 0 ] = 0; + p = Q; /* Pointer to polynomial */ + ylo = SKP_Silk_A2NLSF_eval_poly( p, xlo, dd ); + root_ix = 1; /* Index of current root */ + } else { + root_ix = 0; /* Index of current root */ + } + k = 1; /* Reset loop counter */ + } + } + } +} + + diff --git a/libs/silk/src/SKP_Silk_CNG.c b/libs/silk/src/SKP_Silk_CNG.c new file mode 100644 index 0000000000..55ae4c526e --- /dev/null +++ b/libs/silk/src/SKP_Silk_CNG.c @@ -0,0 +1,175 @@ + + +/*********************************************************************** + +Copyright (c) 2006-2010, Skype Limited. All rights reserved. + + + + + +Redistribution and use in source and binary forms, with or without +modification, (subject to the limitations in the disclaimer below) +are permitted provided that the following conditions are met: +- Redistributions of source code must retain the above copyright notice, +this list of conditions and the following disclaimer. +- Redistributions in binary form must reproduce the above copyright +notice, this list of conditions and the following disclaimer in the +documentation and/or other materials provided with the distribution. +- Neither the name of Skype Limited, nor the names of specific +contributors, may be used to endorse or promote products derived from +this software without specific prior written permission. +NO EXPRESS OR IMPLIED LICENSES TO ANY PARTY'S PATENT RIGHTS ARE GRANTED +BY THIS LICENSE.THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND +CONTRIBUTORS ''AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, +BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND +FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE +COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, +INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT +NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF +USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON +ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT +(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE +OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + +***********************************************************************/ + +#include "SKP_Silk_main_FIX.h" + +/* Generates excitation for CNG LPC synthesis */ +SKP_INLINE void SKP_Silk_cng_exe( + SKP_int16 residual[], /* O CNG residual signal Q0 */ + SKP_int32 exc_buf_Q10[], /* I Random samples buffer Q10 */ + SKP_int32 Gain_Q16, /* I Gain to aply */ + SKP_int length, /* I Length */ + SKP_int32 *rand_seed /* I/O Seed to random index generator */ +) +{ + SKP_int32 seed; + SKP_int i, idx, exc_mask; + + exc_mask = CNG_BUF_MASK_MAX; + while( exc_mask > length ) { + exc_mask = SKP_RSHIFT( exc_mask, 1 ); + } + + seed = *rand_seed; + for( i = 0; i < length; i++ ) { + seed = SKP_RAND( seed ); + + + + + + idx = (SKP_int)( SKP_RSHIFT( seed, 24 ) & exc_mask ); + SKP_assert( idx >= 0 ); + SKP_assert( idx <= CNG_BUF_MASK_MAX ); + residual[ i ] = (SKP_int16)SKP_SAT16( SKP_RSHIFT_ROUND( SKP_SMULWW( exc_buf_Q10[ idx ], Gain_Q16 ), 10 ) ); + } + *rand_seed = seed; +} + +void SKP_Silk_CNG_Reset( + SKP_Silk_decoder_state *psDec /* I/O Decoder state */ +) +{ + SKP_int i, NLSF_step_Q15, NLSF_acc_Q15; + + NLSF_step_Q15 = SKP_DIV32_16( SKP_int16_MAX, psDec->LPC_order + 1 ); + NLSF_acc_Q15 = 0; + for( i = 0; i < psDec->LPC_order; i++ ) { + NLSF_acc_Q15 += NLSF_step_Q15; + psDec->sCNG.CNG_smth_NLSF_Q15[ i ] = NLSF_acc_Q15; + } + psDec->sCNG.CNG_smth_Gain_Q16 = 0; + psDec->sCNG.rand_seed = 3176576; +} + +/* Updates CNG estimate, and applies the CNG when packet was lost */ +void SKP_Silk_CNG( + SKP_Silk_decoder_state *psDec, /* I/O Decoder state */ + SKP_Silk_decoder_control *psDecCtrl, /* I/O Decoder control */ + SKP_int16 signal[], /* I/O Signal */ + SKP_int length /* I Length of residual */ +) +{ + SKP_int i, subfr; + SKP_int32 tmp_32, Gain_Q26, max_Gain_Q16; + SKP_int16 LPC_buf[ MAX_LPC_ORDER ]; + SKP_int16 CNG_sig[ MAX_FRAME_LENGTH ]; + SKP_Silk_CNG_struct *psCNG; + psCNG = &psDec->sCNG; + + if( psDec->fs_kHz != psCNG->fs_kHz ) { + /* Reset state */ + SKP_Silk_CNG_Reset( psDec ); + + psCNG->fs_kHz = psDec->fs_kHz; + } + if( psDec->lossCnt == 0 && psDec->vadFlag == NO_VOICE_ACTIVITY ) { + /* Update CNG parameters */ + + + + + + + /* Smoothing of LSF's */ + for( i = 0; i < psDec->LPC_order; i++ ) { + psCNG->CNG_smth_NLSF_Q15[ i ] += SKP_SMULWB( psDec->prevNLSF_Q15[ i ] - psCNG->CNG_smth_NLSF_Q15[ i ], CNG_NLSF_SMTH_Q16 ); + } + /* Find the subframe with the highest gain */ + max_Gain_Q16 = 0; + subfr = 0; + for( i = 0; i < NB_SUBFR; i++ ) { + if( psDecCtrl->Gains_Q16[ i ] > max_Gain_Q16 ) { + max_Gain_Q16 = psDecCtrl->Gains_Q16[ i ]; + subfr = i; + } + } + /* Update CNG excitation buffer with excitation from this subframe */ + SKP_memmove( &psCNG->CNG_exc_buf_Q10[ psDec->subfr_length ], psCNG->CNG_exc_buf_Q10, ( NB_SUBFR - 1 ) * psDec->subfr_length * sizeof( SKP_int32 ) ); + SKP_memcpy( psCNG->CNG_exc_buf_Q10, &psDec->exc_Q10[ subfr * psDec->subfr_length ], psDec->subfr_length * sizeof( SKP_int32 ) ); + + /* Smooth gains */ + for( i = 0; i < NB_SUBFR; i++ ) { + psCNG->CNG_smth_Gain_Q16 += SKP_SMULWB( psDecCtrl->Gains_Q16[ i ] - psCNG->CNG_smth_Gain_Q16, CNG_GAIN_SMTH_Q16 ); + } + } + + /* Add CNG when packet is lost and / or when low speech activity */ + if( psDec->lossCnt ) {//|| psDec->vadFlag == NO_VOICE_ACTIVITY ) { + + /* Generate CNG excitation */ + SKP_Silk_cng_exe( CNG_sig, psCNG->CNG_exc_buf_Q10, + psCNG->CNG_smth_Gain_Q16, length, &psCNG->rand_seed ); + + /* Convert CNG NLSF to filter representation */ + SKP_Silk_NLSF2A_stable( LPC_buf, psCNG->CNG_smth_NLSF_Q15, psDec->LPC_order ); + + Gain_Q26 = (SKP_int32)1 << 26; /* 1.0 */ + + /* Generate CNG signal, by synthesis filtering */ + if( psDec->LPC_order == 16 ) { + SKP_Silk_LPC_synthesis_order16( CNG_sig, LPC_buf, + Gain_Q26, psCNG->CNG_synth_state, CNG_sig, length ); + } else { + SKP_Silk_LPC_synthesis_filter( CNG_sig, LPC_buf, + Gain_Q26, psCNG->CNG_synth_state, CNG_sig, length, psDec->LPC_order ); + } + /* Mix with signal */ + for( i = 0; i < length; i++ ) { + tmp_32 = signal[ i ] + CNG_sig[ i ]; + signal[ i ] = SKP_SAT16( tmp_32 ); + } + + + + + + } else { + SKP_memset( psCNG->CNG_synth_state, 0, psDec->LPC_order * sizeof( SKP_int32 ) ); + } +} + + diff --git a/libs/silk/src/SKP_Silk_HP_variable_cutoff_FIX.c b/libs/silk/src/SKP_Silk_HP_variable_cutoff_FIX.c new file mode 100644 index 0000000000..2b7d3a19c1 --- /dev/null +++ b/libs/silk/src/SKP_Silk_HP_variable_cutoff_FIX.c @@ -0,0 +1,135 @@ + + + + + +/*********************************************************************** + +Copyright (c) 2006-2010, Skype Limited. All rights reserved. +Redistribution and use in source and binary forms, with or without +modification, (subject to the limitations in the disclaimer below) +are permitted provided that the following conditions are met: +- Redistributions of source code must retain the above copyright notice, +this list of conditions and the following disclaimer. +- Redistributions in binary form must reproduce the above copyright +notice, this list of conditions and the following disclaimer in the +documentation and/or other materials provided with the distribution. +- Neither the name of Skype Limited, nor the names of specific +contributors, may be used to endorse or promote products derived from +this software without specific prior written permission. +NO EXPRESS OR IMPLIED LICENSES TO ANY PARTY'S PATENT RIGHTS ARE GRANTED +BY THIS LICENSE.THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND +CONTRIBUTORS ''AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, +BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND +FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE +COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, +INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT +NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF +USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON +ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT +(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE +OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + +***********************************************************************/ + +#include "SKP_Silk_main_FIX.h" + +#if HIGH_PASS_INPUT + +#define SKP_RADIANS_CONSTANT_Q19 1482 // 0.45f * 2.0f * 3.14159265359 / 1000 +#define SKP_LOG2_VARIABLE_HP_MIN_FREQ_Q7 809 // log(80) in Q7 + +/* High-pass filter with cutoff frequency adaptation based on pitch lag statistics */ +void SKP_Silk_HP_variable_cutoff_FIX( + SKP_Silk_encoder_state_FIX *psEnc, /* I/O Encoder state FIX */ + SKP_Silk_encoder_control_FIX *psEncCtrl, /* I/O Encoder control FIX */ + SKP_int16 *out, /* O high-pass filtered output signal */ + const SKP_int16 *in /* I input signal */ +) +{ + SKP_int quality_Q15; + SKP_int32 B_Q28[ 3 ], A_Q28[ 2 ]; + SKP_int32 Fc_Q19, r_Q28, r_Q22; + SKP_int32 pitch_freq_Hz_Q16, pitch_freq_log_Q7, delta_freq_Q7; + + + + + + /*********************************************/ + /* Estimate Low End of Pitch Frequency Range */ + /*********************************************/ + if( psEnc->sCmn.prev_sigtype == SIG_TYPE_VOICED ) { + /* difference, in log domain */ + pitch_freq_Hz_Q16 = SKP_DIV32_16( SKP_LSHIFT( SKP_MUL( psEnc->sCmn.fs_kHz, 1000 ), 16 ), psEnc->sCmn.prevLag ); + pitch_freq_log_Q7 = SKP_Silk_lin2log( pitch_freq_Hz_Q16 ) - ( 16 << 7 ); //0x70 + + /* adjustment based on quality */ + quality_Q15 = psEncCtrl->input_quality_bands_Q15[ 0 ]; + pitch_freq_log_Q7 = SKP_SUB32( pitch_freq_log_Q7, SKP_SMULWB( SKP_SMULWB( SKP_LSHIFT( quality_Q15, 2 ), quality_Q15 ), + pitch_freq_log_Q7 - SKP_LOG2_VARIABLE_HP_MIN_FREQ_Q7 ) ); + pitch_freq_log_Q7 = SKP_ADD32( pitch_freq_log_Q7, SKP_RSHIFT( 19661 - quality_Q15, 9 ) ); // 19661_Q15 = 0.6_Q0 + + //delta_freq = pitch_freq_log - psEnc->variable_HP_smth1; + delta_freq_Q7 = pitch_freq_log_Q7 - SKP_RSHIFT( psEnc->variable_HP_smth1_Q15, 8 ); + if( delta_freq_Q7 < 0 ) { + /* less smoothing for decreasing pitch frequency, to track something close to the minimum */ + delta_freq_Q7 = SKP_MUL( delta_freq_Q7, 3 ); + } + + /* limit delta, to reduce impact of outliers */ + delta_freq_Q7 = SKP_LIMIT( delta_freq_Q7, -VARIABLE_HP_MAX_DELTA_FREQ_Q7, VARIABLE_HP_MAX_DELTA_FREQ_Q7 ); + + /* update smoother */ + psEnc->variable_HP_smth1_Q15 = SKP_SMLAWB( psEnc->variable_HP_smth1_Q15, + SKP_MUL( SKP_LSHIFT( psEnc->speech_activity_Q8, 1 ), delta_freq_Q7 ), VARIABLE_HP_SMTH_COEF1_Q16 ); + } + /* second smoother */ + psEnc->variable_HP_smth2_Q15 = SKP_SMLAWB( psEnc->variable_HP_smth2_Q15, + psEnc->variable_HP_smth1_Q15 - psEnc->variable_HP_smth2_Q15, VARIABLE_HP_SMTH_COEF2_Q16 ); + + /* convert from log scale to Hertz */ + psEncCtrl->pitch_freq_low_Hz = SKP_Silk_log2lin( SKP_RSHIFT( psEnc->variable_HP_smth2_Q15, 8 ) ); //pow( 2.0, psEnc->variable_HP_smth2 ); + + /* limit frequency range */ + psEncCtrl->pitch_freq_low_Hz = SKP_LIMIT( psEncCtrl->pitch_freq_low_Hz, VARIABLE_HP_MIN_FREQ_Q0, VARIABLE_HP_MAX_FREQ_Q0 ); + + /********************************/ + /* Compute Filter Coefficients */ + /********************************/ + /* compute cut-off frequency, in radians */ + //Fc_num = (SKP_float)( 0.45f * 2.0f * 3.14159265359 * psEncCtrl->pitch_freq_low_Hz ); + //Fc_denom = (SKP_float)( 1e3f * psEnc->sCmn.fs_kHz ); + SKP_assert( psEncCtrl->pitch_freq_low_Hz <= SKP_int32_MAX / SKP_RADIANS_CONSTANT_Q19 ); + Fc_Q19 = SKP_DIV32_16( SKP_SMULBB( SKP_RADIANS_CONSTANT_Q19, psEncCtrl->pitch_freq_low_Hz ), psEnc->sCmn.fs_kHz ); // range: 3704 - 27787, 11-15 bits + SKP_assert( Fc_Q19 >= 3704 ); + SKP_assert( Fc_Q19 <= 27787 ); + + + + + + r_Q28 = ( 1 << 28 ) - SKP_MUL( 471, Fc_Q19 ); // 471_Q9 = 0.92_Q0, range: 255347779 to 266690872, 27-28 bits + SKP_assert( r_Q28 >= 255347779 ); + SKP_assert( r_Q28 <= 266690872 ); + + /* b = r * [ 1; -2; 1 ]; */ + /* a = [ 1; -2 * r * ( 1 - 0.5 * Fc^2 ); r^2 ]; */ + B_Q28[ 0 ] = r_Q28; + B_Q28[ 1 ] = SKP_LSHIFT( -r_Q28, 1 ); + B_Q28[ 2 ] = r_Q28; + + // -r * ( 2 - Fc * Fc ); + r_Q22 = SKP_RSHIFT( r_Q28, 6 ); + A_Q28[ 0 ] = SKP_SMULWW( r_Q22, SKP_SMULWW( Fc_Q19, Fc_Q19 ) - ( 2 << 22 ) ); + A_Q28[ 1 ] = SKP_SMULWW( r_Q22, r_Q22 ); + + /********************************/ + /* High-Pass Filter */ + /********************************/ + SKP_Silk_biquad_alt( in, B_Q28, A_Q28, psEnc->sCmn.In_HP_State, out, psEnc->sCmn.frame_length ); +} + +#endif // HIGH_PASS_INPUT + + diff --git a/libs/silk/src/SKP_Silk_Inlines.h b/libs/silk/src/SKP_Silk_Inlines.h new file mode 100644 index 0000000000..51609e4323 --- /dev/null +++ b/libs/silk/src/SKP_Silk_Inlines.h @@ -0,0 +1,312 @@ + + + + + +/*********************************************************************** + +Copyright (c) 2006-2010, Skype Limited. All rights reserved. +Redistribution and use in source and binary forms, with or without +modification, (subject to the limitations in the disclaimer below) +are permitted provided that the following conditions are met: +- Redistributions of source code must retain the above copyright notice, +this list of conditions and the following disclaimer. +- Redistributions in binary form must reproduce the above copyright +notice, this list of conditions and the following disclaimer in the +documentation and/or other materials provided with the distribution. +- Neither the name of Skype Limited, nor the names of specific +contributors, may be used to endorse or promote products derived from +this software without specific prior written permission. +NO EXPRESS OR IMPLIED LICENSES TO ANY PARTY'S PATENT RIGHTS ARE GRANTED +BY THIS LICENSE.THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND +CONTRIBUTORS ''AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, +BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND +FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE +COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, +INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT +NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF +USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON +ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT +(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE +OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + +***********************************************************************/ + +/*! \file SKP_Silk_Inlines.h + * \brief SigProcFix_Inlines.h defines inline signal processing functions. + */ + +#ifndef _SKP_SILK_FIX_INLINES_H_ +#define _SKP_SILK_FIX_INLINES_H_ + +#ifdef __cplusplus +extern "C" +{ +#endif + +/* count leading zeros of SKP_int64 */ +SKP_INLINE SKP_int32 SKP_Silk_CLZ64(SKP_int64 in) +{ + SKP_int32 in_upper; + + in_upper = (SKP_int32)SKP_RSHIFT64(in, 32); + if (in_upper == 0) { + + + + + + /* Search in the lower 32 bits */ + return 32 + SKP_Silk_CLZ32( (SKP_int32) in ); + } else { + /* Search in the upper 32 bits */ + return SKP_Silk_CLZ32( in_upper ); + } +} + +/* get number of leading zeros and fractional part (the bits right after the leading one */ +SKP_INLINE void SKP_Silk_CLZ_FRAC(SKP_int32 in, /* I: input */ + SKP_int32 *lz, /* O: number of leading zeros */ + SKP_int32 *frac_Q7) /* O: the 7 bits right after the leading one */ +{ + SKP_int32 leadingZeros; + + leadingZeros = SKP_Silk_CLZ32(in); + *lz = leadingZeros; + if( leadingZeros < 24 ) { + *frac_Q7 = SKP_RSHIFT(in, 24 - leadingZeros) & 0x7F; + } else { + *frac_Q7 = SKP_LSHIFT(in, leadingZeros - 24) & 0x7F; + } +} + +/* Approximation of square root */ +/* Accuracy: < +/- 10% for output values > 15 */ +/* < +/- 2.5% for output values > 120 */ +SKP_INLINE SKP_int32 SKP_Silk_SQRT_APPROX(SKP_int32 x) +{ + SKP_int32 y, lz, frac_Q7; + + if( x <= 0 ) { + return 0; + } + + SKP_Silk_CLZ_FRAC(x, &lz, &frac_Q7); + + if( lz & 1 ) { + y = 32768; + } else { + y = 46214; /* 46214 = sqrt(2) * 32768 */ + } + + /* get scaling right */ + y >>= SKP_RSHIFT(lz, 1); + + /* increment using fractional part of input */ + y = SKP_SMLAWB(y, y, SKP_SMULBB(213, frac_Q7)); + + + + + + return y; +} + +/* returns the number of left shifts before overflow for a 16 bit number (ITU definition with norm(0)=0) */ +SKP_INLINE SKP_int32 SKP_Silk_norm16(SKP_int16 a) { + + SKP_int32 a32; + + /* if ((a == 0) || (a == SKP_int16_MIN)) return(0); */ + if ((a << 1) == 0) return(0); + + a32 = a; + /* if (a32 < 0) a32 = -a32 - 1; */ + a32 ^= SKP_RSHIFT(a32, 31); + + return SKP_Silk_CLZ32(a32) - 17; +} + +/* returns the number of left shifts before overflow for a 32 bit number (ITU definition with norm(0)=0) */ +SKP_INLINE SKP_int32 SKP_Silk_norm32(SKP_int32 a) { + + /* if ((a == 0) || (a == SKP_int32_MIN)) return(0); */ + if ((a << 1) == 0) return(0); + + /* if (a < 0) a = -a - 1; */ + a ^= SKP_RSHIFT(a, 31); + + return SKP_Silk_CLZ32(a) - 1; +} + +/* Divide two int32 values and return result as int32 in a given Q-domain */ +SKP_INLINE SKP_int32 SKP_DIV32_varQ( /* O returns a good approximation of "(a32 << Qres) / b32" */ + const SKP_int32 a32, /* I numerator (Q0) */ + const SKP_int32 b32, /* I denominator (Q0) */ + const SKP_int Qres /* I Q-domain of result (>= 0) */ +) +{ + SKP_int a_headrm, b_headrm, lshift; + SKP_int32 b32_inv, a32_nrm, b32_nrm, result; + + SKP_assert( b32 != 0 ); + SKP_assert( Qres >= 0 ); + + /* Compute number of bits head room and normalize inputs */ + a_headrm = SKP_Silk_CLZ32( SKP_abs(a32) ) - 1; + a32_nrm = SKP_LSHIFT(a32, a_headrm); /* Q: a_headrm */ + b_headrm = SKP_Silk_CLZ32( SKP_abs(b32) ) - 1; + b32_nrm = SKP_LSHIFT(b32, b_headrm); /* Q: b_headrm */ + + + + + + /* Inverse of b32, with 14 bits of precision */ + b32_inv = SKP_DIV32_16( SKP_int32_MAX >> 2, SKP_RSHIFT(b32_nrm, 16) ); /* Q: 29 + 16 - b_headrm */ + + /* First approximation */ + result = SKP_SMULWB(a32_nrm, b32_inv); /* Q: 29 + a_headrm - b_headrm */ + + /* Compute residual by subtracting product of denominator and first approximation */ + a32_nrm -= SKP_LSHIFT_ovflw( SKP_SMMUL(b32_nrm, result), 3 ); /* Q: a_headrm */ + + /* Refinement */ + result = SKP_SMLAWB(result, a32_nrm, b32_inv); /* Q: 29 + a_headrm - b_headrm */ + + /* Convert to Qres domain */ + lshift = 29 + a_headrm - b_headrm - Qres; + if( lshift <= 0 ) { + return SKP_LSHIFT_SAT32(result, -lshift); + } else { + if( lshift < 32){ + return SKP_RSHIFT(result, lshift); + } else { + /* Avoid undefined result */ + return 0; + } + } +} + +/* Invert int32 value and return result as int32 in a given Q-domain */ +SKP_INLINE SKP_int32 SKP_INVERSE32_varQ( /* O returns a good approximation of "(1 << Qres) / b32" */ + const SKP_int32 b32, /* I denominator (Q0) */ + const SKP_int Qres /* I Q-domain of result (> 0) */ +) +{ + SKP_int b_headrm, lshift; + SKP_int32 b32_inv, b32_nrm, err_Q32, result; + + SKP_assert( b32 != 0 ); + SKP_assert( Qres > 0 ); + + /* Compute number of bits head room and normalize input */ + b_headrm = SKP_Silk_CLZ32( SKP_abs(b32) ) - 1; + b32_nrm = SKP_LSHIFT(b32, b_headrm); /* Q: b_headrm */ + + /* Inverse of b32, with 14 bits of precision */ + b32_inv = SKP_DIV32_16( SKP_int32_MAX >> 2, SKP_RSHIFT(b32_nrm, 16) ); /* Q: 29 + 16 - b_headrm */ + + /* First approximation */ + result = SKP_LSHIFT(b32_inv, 16); /* Q: 61 - b_headrm */ + + + + + + + /* Compute residual by subtracting product of denominator and first approximation from one */ + err_Q32 = SKP_LSHIFT_ovflw( -SKP_SMULWB(b32_nrm, b32_inv), 3 ); /* Q32 */ + + /* Refinement */ + result = SKP_SMLAWW(result, err_Q32, b32_inv); /* Q: 61 - b_headrm */ + + /* Convert to Qres domain */ + lshift = 61 - b_headrm - Qres; + if( lshift <= 0 ) { + return SKP_LSHIFT_SAT32(result, -lshift); + } else { + if( lshift < 32){ + return SKP_RSHIFT(result, lshift); + }else{ + /* Avoid undefined result */ + return 0; + } + } +} + +#define SKP_SIN_APPROX_CONST0 (1073735400) +#define SKP_SIN_APPROX_CONST1 (-82778932) +#define SKP_SIN_APPROX_CONST2 (1059577) +#define SKP_SIN_APPROX_CONST3 (-5013) + +/* Sine approximation; an input of 65536 corresponds to 2 * pi */ +/* Uses polynomial expansion of the input to the power 0, 2, 4 and 6 */ +/* The relative error is below 1e-5 */ +SKP_INLINE SKP_int32 SKP_Silk_SIN_APPROX_Q24( /* O returns approximately 2^24 * sin(x * 2 * pi / 65536) */ + SKP_int32 x +) +{ + SKP_int y_Q30; + + /* Keep only bottom 16 bits (the function repeats itself with period 65536) */ + x &= 65535; + + /* Split range in four quadrants */ + if( x <= 32768 ) { + if( x < 16384 ) { + /* Return cos(pi/2 - x) */ + x = 16384 - x; + } else { + /* Return cos(x - pi/2) */ + x -= 16384; + } + if( x < 1100 ) { + /* Special case: high accuracy */ + + + + + + return SKP_SMLAWB( 1 << 24, SKP_MUL( x, x ), -5053 ); + } + x = SKP_SMULWB( SKP_LSHIFT( x, 8 ), x ); /* contains x^2 in Q20 */ + y_Q30 = SKP_SMLAWB( SKP_SIN_APPROX_CONST2, x, SKP_SIN_APPROX_CONST3 ); + y_Q30 = SKP_SMLAWW( SKP_SIN_APPROX_CONST1, x, y_Q30 ); + y_Q30 = SKP_SMLAWW( SKP_SIN_APPROX_CONST0 + 66, x, y_Q30 ); + } else { + if( x < 49152 ) { + /* Return -cos(3*pi/2 - x) */ + x = 49152 - x; + } else { + /* Return -cos(x - 3*pi/2) */ + x -= 49152; + } + if( x < 1100 ) { + /* Special case: high accuracy */ + return SKP_SMLAWB( -1 << 24, SKP_MUL( x, x ), 5053 ); + } + x = SKP_SMULWB( SKP_LSHIFT( x, 8 ), x ); /* contains x^2 in Q20 */ + y_Q30 = SKP_SMLAWB( -SKP_SIN_APPROX_CONST2, x, -SKP_SIN_APPROX_CONST3 ); + y_Q30 = SKP_SMLAWW( -SKP_SIN_APPROX_CONST1, x, y_Q30 ); + y_Q30 = SKP_SMLAWW( -SKP_SIN_APPROX_CONST0, x, y_Q30 ); + } + return SKP_RSHIFT_ROUND( y_Q30, 6 ); +} + +/* Cosine approximation; an input of 65536 corresponds to 2 * pi */ +/* The relative error is below 1e-5 */ +SKP_INLINE SKP_int32 SKP_Silk_COS_APPROX_Q24( /* O returns approximately 2^24 * cos(x * 2 * pi / 65536) */ + SKP_int32 x +) +{ + return SKP_Silk_SIN_APPROX_Q24( x + 16384 ); +} + +#ifdef __cplusplus +} +#endif + +#endif //_SKP_SILK_FIX_INLINES_H_ + + diff --git a/libs/silk/src/SKP_Silk_LBRR_reset.c b/libs/silk/src/SKP_Silk_LBRR_reset.c new file mode 100644 index 0000000000..bf8c89defd --- /dev/null +++ b/libs/silk/src/SKP_Silk_LBRR_reset.c @@ -0,0 +1,46 @@ + + +/*********************************************************************** + +Copyright (c) 2006-2010, Skype Limited. All rights reserved. +Redistribution and use in source and binary forms, with or without +modification, (subject to the limitations in the disclaimer below) +are permitted provided that the following conditions are met: +- Redistributions of source code must retain the above copyright notice, +this list of conditions and the following disclaimer. +- Redistributions in binary form must reproduce the above copyright +notice, this list of conditions and the following disclaimer in the +documentation and/or other materials provided with the distribution. +- Neither the name of Skype Limited, nor the names of specific +contributors, may be used to endorse or promote products derived from +this software without specific prior written permission. +NO EXPRESS OR IMPLIED LICENSES TO ANY PARTY'S PATENT RIGHTS ARE GRANTED +BY THIS LICENSE.THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND +CONTRIBUTORS ''AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, +BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND +FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE +COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, +INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT +NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF +USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON +ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT +(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE +OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + +***********************************************************************/ + +#include "SKP_Silk_main.h" + +/* Resets LBRR buffer, used if packet size changes */ +void SKP_Silk_LBRR_reset( + SKP_Silk_encoder_state *psEncC /* I/O state */ +) +{ + SKP_int i; + + for( i = 0; i < MAX_LBRR_DELAY; i++ ) { + psEncC->LBRR_buffer[ i ].usage = SKP_SILK_NO_LBRR; + } +} + + diff --git a/libs/silk/src/SKP_Silk_LPC_inv_pred_gain.c b/libs/silk/src/SKP_Silk_LPC_inv_pred_gain.c new file mode 100644 index 0000000000..c4c8bd79ec --- /dev/null +++ b/libs/silk/src/SKP_Silk_LPC_inv_pred_gain.c @@ -0,0 +1,213 @@ + + +/*********************************************************************** + +Copyright (c) 2006-2010, Skype Limited. All rights reserved. +Redistribution and use in source and binary forms, with or without +modification, (subject to the limitations in the disclaimer below) +are permitted provided that the following conditions are met: +- Redistributions of source code must retain the above copyright notice, +this list of conditions and the following disclaimer. +- Redistributions in binary form must reproduce the above copyright +notice, this list of conditions and the following disclaimer in the +documentation and/or other materials provided with the distribution. +- Neither the name of Skype Limited, nor the names of specific +contributors, may be used to endorse or promote products derived from +this software without specific prior written permission. +NO EXPRESS OR IMPLIED LICENSES TO ANY PARTY'S PATENT RIGHTS ARE GRANTED +BY THIS LICENSE.THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND +CONTRIBUTORS ''AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, +BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND +FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE +COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, +INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT +NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF +USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON +ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT +(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE +OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + + + + + +***********************************************************************/ + +/* * + * SKP_Silk_LPC_inverse_pred_gain.c * + * * + * Compute inverse of LPC prediction gain, and * + * test if LPC coefficients are stable (all poles within unit circle) * + * * + * Copyright 2008 (c), Skype Limited * + * */ +#include "SKP_Silk_SigProc_FIX.h" + +#define QA 16 +#define A_LIMIT 65520 + +/* Compute inverse of LPC prediction gain, and */ +/* test if LPC coefficients are stable (all poles within unit circle) */ +SKP_int SKP_Silk_LPC_inverse_pred_gain( /* O: Returns 1 if unstable, otherwise 0 */ + SKP_int32 *invGain_Q30, /* O: Inverse prediction gain, Q30 energy domain */ + const SKP_int16 *A_Q12, /* I: Prediction coefficients, Q12 [order] */ + const SKP_int order /* I: Prediction order */ +) +{ + SKP_int k, n, headrm; + SKP_int32 rc_Q31, rc_mult1_Q30, rc_mult2_Q16; + SKP_int32 Atmp_QA[ 2 ][ SigProc_MAX_ORDER_LPC ], tmp_QA; + SKP_int32 *Aold_QA, *Anew_QA; + + Anew_QA = Atmp_QA[ order & 1 ]; + /* Increase Q domain of the AR coefficients */ + for( k = 0; k < order; k++ ) { + Anew_QA[ k ] = SKP_LSHIFT( (SKP_int32)A_Q12[ k ], QA - 12 ); + } + + *invGain_Q30 = ( 1 << 30 ); + for( k = order - 1; k > 0; k-- ) { + /* Check for stability */ + if( ( Anew_QA[ k ] > A_LIMIT ) || ( Anew_QA[ k ] < -A_LIMIT ) ) { + return 1; + } + + /* Set RC equal to negated AR coef */ + rc_Q31 = -SKP_LSHIFT( Anew_QA[ k ], 31 - QA ); + + /* rc_mult1_Q30 range: [ 1 : 2^30-1 ] */ + rc_mult1_Q30 = ( SKP_int32_MAX >> 1 ) - SKP_SMMUL( rc_Q31, rc_Q31 ); + SKP_assert( rc_mult1_Q30 > ( 1 << 15 ) ); /* reduce A_LIMIT if fails */ + SKP_assert( rc_mult1_Q30 < ( 1 << 30 ) ); + + + + + + /* rc_mult2_Q16 range: [ 2^16 : SKP_int32_MAX ] */ + rc_mult2_Q16 = SKP_INVERSE32_varQ( rc_mult1_Q30, 46 ); /* 16 = 46 - 30 */ + + /* Update inverse gain */ + /* invGain_Q30 range: [ 0 : 2^30 ] */ + *invGain_Q30 = SKP_LSHIFT( SKP_SMMUL( *invGain_Q30, rc_mult1_Q30 ), 2 ); + SKP_assert( *invGain_Q30 >= 0 ); + SKP_assert( *invGain_Q30 <= ( 1 << 30 ) ); + + /* Swap pointers */ + Aold_QA = Anew_QA; + Anew_QA = Atmp_QA[ k & 1 ]; + + /* Update AR coefficient */ + headrm = SKP_Silk_CLZ32( rc_mult2_Q16 ) - 1; + rc_mult2_Q16 = SKP_LSHIFT( rc_mult2_Q16, headrm ); /* Q: 16 + headrm */ + for( n = 0; n < k; n++ ) { + tmp_QA = Aold_QA[ n ] - SKP_LSHIFT( SKP_SMMUL( Aold_QA[ k - n - 1 ], rc_Q31 ), 1 ); + Anew_QA[ n ] = SKP_LSHIFT( SKP_SMMUL( tmp_QA, rc_mult2_Q16 ), 16 - headrm ); + } + } + + /* Check for stability */ + if( ( Anew_QA[ 0 ] > A_LIMIT ) || ( Anew_QA[ 0 ] < -A_LIMIT ) ) { + return 1; + } + + /* Set RC equal to negated AR coef */ + rc_Q31 = -SKP_LSHIFT( Anew_QA[ 0 ], 31 - QA ); + + /* Range: [ 1 : 2^30 ] */ + rc_mult1_Q30 = ( SKP_int32_MAX >> 1 ) - SKP_SMMUL( rc_Q31, rc_Q31 ); + + /* Update inverse gain */ + /* Range: [ 0 : 2^30 ] */ + *invGain_Q30 = SKP_LSHIFT( SKP_SMMUL( *invGain_Q30, rc_mult1_Q30 ), 2 ); + SKP_assert( *invGain_Q30 >= 0 ); + SKP_assert( *invGain_Q30 <= 1<<30 ); + + return 0; +} + +/* For input in Q13 domain */ +SKP_int SKP_Silk_LPC_inverse_pred_gain_Q13( /* O: Returns 1 if unstable, otherwise 0 */ + SKP_int32 *invGain_Q30, /* O: Inverse prediction gain, Q30 energy domain */ + const SKP_int16 *A_Q13, /* I: Prediction coefficients, Q13 [order] */ + const SKP_int order /* I: Prediction order */ +) + + + + + +{ + SKP_int k, n, headrm; + SKP_int32 rc_Q31, rc_mult1_Q30, rc_mult2_Q16; + SKP_int32 Atmp_QA[ 2 ][ SigProc_MAX_ORDER_LPC ], tmp_QA; + SKP_int32 *Aold_QA, *Anew_QA; + + Anew_QA = Atmp_QA[ order & 1 ]; + /* Increase Q domain of the AR coefficients */ + for( k = 0; k < order; k++ ) { + Anew_QA[ k ] = SKP_LSHIFT( (SKP_int32)A_Q13[ k ], QA - 13 ); + } + + *invGain_Q30 = ( 1 << 30 ); + for( k = order - 1; k > 0; k-- ) { + /* Check for stability */ + if( ( Anew_QA[ k ] > A_LIMIT ) || ( Anew_QA[ k ] < -A_LIMIT ) ) { + return 1; + } + + /* Set RC equal to negated AR coef */ + rc_Q31 = -SKP_LSHIFT( Anew_QA[ k ], 31 - QA ); + + /* rc_mult1_Q30 range: [ 1 : 2^30-1 ] */ + rc_mult1_Q30 = ( SKP_int32_MAX >> 1 ) - SKP_SMMUL( rc_Q31, rc_Q31 ); + SKP_assert( rc_mult1_Q30 > ( 1 << 15 ) ); /* reduce A_LIMIT if fails */ + SKP_assert( rc_mult1_Q30 < ( 1 << 30 ) ); + + /* rc_mult2_Q16 range: [ 2^16 : SKP_int32_MAX ] */ + rc_mult2_Q16 = SKP_INVERSE32_varQ( rc_mult1_Q30, 46 ); /* 16 = 46 - 30 */ + + /* Update inverse gain */ + /* invGain_Q30 range: [ 0 : 2^30 ] */ + *invGain_Q30 = SKP_LSHIFT( SKP_SMMUL( *invGain_Q30, rc_mult1_Q30 ), 2 ); + SKP_assert( *invGain_Q30 >= 0 ); + SKP_assert( *invGain_Q30 <= 1<<30 ); + + /* Swap pointers */ + Aold_QA = Anew_QA; + Anew_QA = Atmp_QA[ k & 1 ]; + + /* Update AR coefficient */ + headrm = SKP_Silk_CLZ32( rc_mult2_Q16 ) - 1; + rc_mult2_Q16 = SKP_LSHIFT( rc_mult2_Q16, headrm ); /* Q: 16 + headrm */ + for( n = 0; n < k; n++ ) { + tmp_QA = Aold_QA[ n ] - SKP_LSHIFT( SKP_SMMUL( Aold_QA[ k - n - 1 ], rc_Q31 ), 1 ); + Anew_QA[ n ] = SKP_LSHIFT( SKP_SMMUL( tmp_QA, rc_mult2_Q16 ), 16 - headrm ); + } + } + + + + + + /* Check for stability */ + if( ( Anew_QA[ 0 ] > A_LIMIT ) || ( Anew_QA[ 0 ] < -A_LIMIT ) ) { + return 1; + } + + /* Set RC equal to negated AR coef */ + rc_Q31 = -SKP_LSHIFT( Anew_QA[ 0 ], 31 - QA ); + + /* Range: [ 1 : 2^30 ] */ + rc_mult1_Q30 = ( SKP_int32_MAX >> 1 ) - SKP_SMMUL( rc_Q31, rc_Q31 ); + + /* Update inverse gain */ + /* Range: [ 0 : 2^30 ] */ + *invGain_Q30 = SKP_LSHIFT( SKP_SMMUL( *invGain_Q30, rc_mult1_Q30 ), 2 ); + SKP_assert( *invGain_Q30 >= 0 ); + SKP_assert( *invGain_Q30 <= 1<<30 ); + + return 0; +} + + diff --git a/libs/silk/src/SKP_Silk_LPC_stabilize.c b/libs/silk/src/SKP_Silk_LPC_stabilize.c new file mode 100644 index 0000000000..6b0e8733f7 --- /dev/null +++ b/libs/silk/src/SKP_Silk_LPC_stabilize.c @@ -0,0 +1,153 @@ + + +/*********************************************************************** + +Copyright (c) 2006-2010, Skype Limited. All rights reserved. +Redistribution and use in source and binary forms, with or without +modification, (subject to the limitations in the disclaimer below) +are permitted provided that the following conditions are met: +- Redistributions of source code must retain the above copyright notice, +this list of conditions and the following disclaimer. +- Redistributions in binary form must reproduce the above copyright +notice, this list of conditions and the following disclaimer in the +documentation and/or other materials provided with the distribution. +- Neither the name of Skype Limited, nor the names of specific +contributors, may be used to endorse or promote products derived from +this software without specific prior written permission. +NO EXPRESS OR IMPLIED LICENSES TO ANY PARTY'S PATENT RIGHTS ARE GRANTED +BY THIS LICENSE.THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND +CONTRIBUTORS ''AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, +BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND +FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE +COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, +INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT +NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF +USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON +ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT + + + + + +(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE +OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + +***********************************************************************/ + +#include "SKP_Silk_typedef.h" +#include "SKP_Silk_SigProc_FIX.h" + +#define LPC_STABILIZE_LPC_MAX_ABS_VALUE_Q16 ( ( (SKP_int32)SKP_int16_MAX ) << 4 ) + +/* LPC stabilizer, for a single input data vector */ +void SKP_Silk_LPC_stabilize( + SKP_int16 *a_Q12, /* O stabilized LPC vector [L] */ + SKP_int32 *a_Q16, /* I LPC vector [L] */ + const SKP_int32 bwe_Q16, /* I Bandwidth expansion factor */ + const SKP_int L /* I Number of LPC parameters in the input vector */ +) +{ + SKP_int32 maxabs, absval, sc_Q16; + SKP_int i, idx = 0; + SKP_int32 invGain_Q30; + + SKP_Silk_bwexpander_32( a_Q16, L, bwe_Q16 ); + + /***************************/ + /* Limit range of the LPCs */ + /***************************/ + /* Limit the maximum absolute value of the prediction coefficients */ + while( SKP_TRUE ) { + /* Find maximum absolute value and its index */ + maxabs = SKP_int32_MIN; + for( i = 0; i < L; i++ ) { + absval = SKP_abs( a_Q16[ i ] ); + if( absval > maxabs ) { + maxabs = absval; + idx = i; + } + } + + if( maxabs >= LPC_STABILIZE_LPC_MAX_ABS_VALUE_Q16 ) { + /* Reduce magnitude of prediction coefficients */ + sc_Q16 = SKP_DIV32( SKP_int32_MAX, SKP_RSHIFT( maxabs, 4 ) ); + sc_Q16 = 65536 - sc_Q16; + sc_Q16 = SKP_DIV32( sc_Q16, idx + 1 ); + sc_Q16 = 65536 - sc_Q16; + sc_Q16 = SKP_LSHIFT( SKP_SMULWB( sc_Q16, 32604 ), 1 ); // 0.995 in Q16 + SKP_Silk_bwexpander_32( a_Q16, L, sc_Q16 ); + } else { + + + + + + break; + } + } + + /* Convert to 16 bit Q12 */ + for( i = 0; i < L; i++ ) { + a_Q12[ i ] = (SKP_int16)SKP_RSHIFT_ROUND( a_Q16[ i ], 4 ); + } + + /**********************/ + /* Ensure stable LPCs */ + /**********************/ + while( SKP_Silk_LPC_inverse_pred_gain( &invGain_Q30, a_Q12, L ) == 1 ) { + SKP_Silk_bwexpander( a_Q12, L, 65339 ); // 0.997 in Q16 + } +} + +void SKP_Silk_LPC_fit( + SKP_int16 *a_QQ, /* O Stabilized LPC vector, Q(24-rshift) [L] */ + SKP_int32 *a_Q24, /* I LPC vector [L] */ + const SKP_int QQ, /* I Q domain of output LPC vector */ + const SKP_int L /* I Number of LPC parameters in the input vector */ +) +{ + SKP_int i, rshift, idx = 0; + SKP_int32 maxabs, absval, sc_Q16; + + rshift = 24 - QQ; + + /***************************/ + /* Limit range of the LPCs */ + /***************************/ + /* Limit the maximum absolute value of the prediction coefficients */ + while( SKP_TRUE ) { + /* Find maximum absolute value and its index */ + maxabs = SKP_int32_MIN; + for( i = 0; i < L; i++ ) { + absval = SKP_abs( a_Q24[ i ] ); + if( absval > maxabs ) { + maxabs = absval; + idx = i; + } + } + + maxabs = SKP_RSHIFT( maxabs, rshift ); + if( maxabs >= SKP_int16_MAX ) { + /* Reduce magnitude of prediction coefficients */ + sc_Q16 = 65470 - SKP_DIV32( SKP_MUL( 65470 >> 2, maxabs - SKP_int16_MAX ), + + + + + + SKP_RSHIFT32( SKP_MUL( maxabs, idx + 1), 2 ) ); + SKP_Silk_bwexpander_32( a_Q24, L, sc_Q16 ); + } else { + break; + } + } + + /* Convert to 16 bit Q(24-rshift) */ + SKP_assert( rshift > 0 ); + SKP_assert( rshift < 31 ); + for( i = 0; i < L; i++ ) { + a_QQ[ i ] = (SKP_int16)SKP_RSHIFT_ROUND( a_Q24[ i ], rshift ); + } +} + + diff --git a/libs/silk/src/SKP_Silk_LPC_synthesis_filter.c b/libs/silk/src/SKP_Silk_LPC_synthesis_filter.c new file mode 100644 index 0000000000..9ef06de416 --- /dev/null +++ b/libs/silk/src/SKP_Silk_LPC_synthesis_filter.c @@ -0,0 +1,114 @@ + + +/*********************************************************************** + +Copyright (c) 2006-2010, Skype Limited. All rights reserved. +Redistribution and use in source and binary forms, with or without +modification, (subject to the limitations in the disclaimer below) +are permitted provided that the following conditions are met: +- Redistributions of source code must retain the above copyright notice, +this list of conditions and the following disclaimer. +- Redistributions in binary form must reproduce the above copyright +notice, this list of conditions and the following disclaimer in the +documentation and/or other materials provided with the distribution. +- Neither the name of Skype Limited, nor the names of specific +contributors, may be used to endorse or promote products derived from +this software without specific prior written permission. +NO EXPRESS OR IMPLIED LICENSES TO ANY PARTY'S PATENT RIGHTS ARE GRANTED +BY THIS LICENSE.THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND +CONTRIBUTORS ''AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, +BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND +FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE +COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, +INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT +NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF +USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON +ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT +(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE +OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + +***********************************************************************/ + + + + + + +/* * + * SKP_Silk_LPC_synthesis_filter.c * + * Coefficients are in Q12 * + * * + * even order AR filter * + * */ +#include "SKP_Silk_SigProc_FIX.h" + +/* even order AR filter */ +void SKP_Silk_LPC_synthesis_filter( + const SKP_int16 *in, /* I: excitation signal */ + const SKP_int16 *A_Q12, /* I: AR coefficients [Order], between -8_Q0 and 8_Q0 */ + const SKP_int32 Gain_Q26, /* I: gain */ + SKP_int32 *S, /* I/O: state vector [Order] */ + SKP_int16 *out, /* O: output signal */ + const SKP_int32 len, /* I: signal length */ + const SKP_int Order /* I: filter order, must be even */ +) +{ + SKP_int k, j, idx, Order_half = SKP_RSHIFT( Order, 1 ); + SKP_int32 SA, SB, Atmp, A_align_Q12[SigProc_MAX_ORDER_LPC >> 1], out32_Q10, out32; + + /* Order must be even */ + SKP_assert( 2*Order_half == Order ); + + /* combine two A_Q12 values and ensure 32-bit alignment */ + for( k = 0; k < Order_half; k++ ) { + idx = SKP_SMULBB( 2, k ); + A_align_Q12[k] = (((SKP_int32)A_Q12[idx]) & 0x0000ffff) | SKP_LSHIFT( (SKP_int32)A_Q12[idx+1], 16 ); + } + + /* S[] values are in Q14 */ + for( k = 0; k < len; k++ ) { + SA = S[Order-1]; + out32_Q10 = 0; + for( j=0;j<(Order_half-1); j++ ) { + idx = SKP_SMULBB( 2, j ) + 1; + /* multiply-add two prediction coefficients for each loop */ + /* NOTE: the code below loads two int16 values in an int32, and multiplies each using the */ + /* SMLAWB and SMLAWT instructions. On a big-endian CPU the two int16 variables would be */ + /* loaded in reverse order and the code will give the wrong result. In that case swapping */ + /* the SMLAWB and SMLAWT instructions should solve the problem. */ + Atmp = A_align_Q12[j]; + SB = S[Order - 1 - idx]; + S[Order - 1 - idx] = SA; + out32_Q10 = SKP_SMLAWB( out32_Q10, SA, Atmp ); + out32_Q10 = SKP_SMLAWT( out32_Q10, SB, Atmp ); + SA = S[Order - 2 - idx]; + + + + + + S[Order - 2 - idx] = SB; + } + + /* unrolled loop: epilog */ + Atmp = A_align_Q12[Order_half-1]; + SB = S[0]; + S[0] = SA; + out32_Q10 = SKP_SMLAWB( out32_Q10, SA, Atmp ); + out32_Q10 = SKP_SMLAWT( out32_Q10, SB, Atmp ); + + /* apply gain to excitation signal and add to prediction */ + out32_Q10 = SKP_ADD_SAT32( out32_Q10, SKP_SMULWB( Gain_Q26, in[k] ) ); + + /* scale to Q0 */ + out32 = SKP_RSHIFT_ROUND( out32_Q10, 10 ); + + /* saturate output */ + out[k] = (SKP_int16)SKP_SAT16( out32 ); + + /* move result into delay line */ + S[Order - 1] = SKP_LSHIFT_SAT32( out32_Q10, 4 ); + } +} + + diff --git a/libs/silk/src/SKP_Silk_LPC_synthesis_order16.c b/libs/silk/src/SKP_Silk_LPC_synthesis_order16.c new file mode 100644 index 0000000000..e93801c88a --- /dev/null +++ b/libs/silk/src/SKP_Silk_LPC_synthesis_order16.c @@ -0,0 +1,162 @@ + + +/*********************************************************************** + +Copyright (c) 2006-2010, Skype Limited. All rights reserved. +Redistribution and use in source and binary forms, with or without +modification, (subject to the limitations in the disclaimer below) +are permitted provided that the following conditions are met: +- Redistributions of source code must retain the above copyright notice, +this list of conditions and the following disclaimer. +- Redistributions in binary form must reproduce the above copyright +notice, this list of conditions and the following disclaimer in the +documentation and/or other materials provided with the distribution. +- Neither the name of Skype Limited, nor the names of specific +contributors, may be used to endorse or promote products derived from +this software without specific prior written permission. +NO EXPRESS OR IMPLIED LICENSES TO ANY PARTY'S PATENT RIGHTS ARE GRANTED +BY THIS LICENSE.THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND +CONTRIBUTORS ''AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, +BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND +FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE +COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, + + + + + +INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT +NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF +USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON +ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT +(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE +OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + +***********************************************************************/ + +/* * + * SKP_Silk_LPC_synthesis_order16.c * + * Coefficients are in Q12 * + * * + * 16th order AR filter * + * */ +#include "SKP_Silk_SigProc_FIX.h" + +/* 16th order AR filter */ +void SKP_Silk_LPC_synthesis_order16(const SKP_int16 *in, /* I: excitation signal */ + const SKP_int16 *A_Q12, /* I: AR coefficients [16], between -8_Q0 and 8_Q0 */ + const SKP_int32 Gain_Q26, /* I: gain */ + SKP_int32 *S, /* I/O: state vector [16] */ + SKP_int16 *out, /* O: output signal */ + const SKP_int32 len /* I: signal length, must be multiple of 16 */ +) +{ + SKP_int k; + SKP_int32 SA, SB, Atmp, A_align_Q12[8], out32_Q10, out32; + + /* combine two A_Q12 values and ensure 32-bit alignment */ + for( k = 0; k < 8; k++ ) { + A_align_Q12[k] = (((SKP_int32)A_Q12[ 2*k ]) & 0x0000ffff) | SKP_LSHIFT( (SKP_int32)A_Q12[ 2*k + 1 ], 16 ); + } + + /* S[] values are in Q14 */ + /* NOTE: the code below loads two int16 values in an int32, and multiplies each using the */ + /* SMLAWB and SMLAWT instructions. On a big-endian CPU the two int16 variables would be */ + /* loaded in reverse order and the code will give the wrong result. In that case swapping */ + /* the SMLAWB and SMLAWT instructions should solve the problem. */ + for( k = 0; k < len; k++ ) { + /* unrolled loop: prolog */ + /* multiply-add two prediction coefficients per iteration */ + SA = S[15]; + Atmp = A_align_Q12[0]; + SB = S[14]; + S[14] = SA; + out32_Q10 = SKP_SMULWB( SA, Atmp ); + out32_Q10 = SKP_SMLAWT_ovflw( out32_Q10, SB, Atmp ); + + + + + + SA = S[13]; + S[13] = SB; + + /* unrolled loop: main loop */ + Atmp = A_align_Q12[1]; + SB = S[12]; + S[12] = SA; + out32_Q10 = SKP_SMLAWB_ovflw( out32_Q10, SA, Atmp ); + out32_Q10 = SKP_SMLAWT_ovflw( out32_Q10, SB, Atmp ); + SA = S[11]; + S[11] = SB; + + Atmp = A_align_Q12[2]; + SB = S[10]; + S[10] = SA; + out32_Q10 = SKP_SMLAWB_ovflw( out32_Q10, SA, Atmp ); + out32_Q10 = SKP_SMLAWT_ovflw( out32_Q10, SB, Atmp ); + SA = S[9]; + S[9] = SB; + + Atmp = A_align_Q12[3]; + SB = S[8]; + S[8] = SA; + out32_Q10 = SKP_SMLAWB_ovflw( out32_Q10, SA, Atmp ); + out32_Q10 = SKP_SMLAWT_ovflw( out32_Q10, SB, Atmp ); + SA = S[7]; + S[7] = SB; + + Atmp = A_align_Q12[4]; + SB = S[6]; + S[6] = SA; + out32_Q10 = SKP_SMLAWB_ovflw( out32_Q10, SA, Atmp ); + out32_Q10 = SKP_SMLAWT_ovflw( out32_Q10, SB, Atmp ); + SA = S[5]; + S[5] = SB; + + Atmp = A_align_Q12[5]; + SB = S[4]; + S[4] = SA; + out32_Q10 = SKP_SMLAWB_ovflw( out32_Q10, SA, Atmp ); + out32_Q10 = SKP_SMLAWT_ovflw( out32_Q10, SB, Atmp ); + SA = S[3]; + S[3] = SB; + + Atmp = A_align_Q12[6]; + SB = S[2]; + S[2] = SA; + out32_Q10 = SKP_SMLAWB_ovflw( out32_Q10, SA, Atmp ); + + + + + + out32_Q10 = SKP_SMLAWT_ovflw( out32_Q10, SB, Atmp ); + SA = S[1]; + S[1] = SB; + + /* unrolled loop: epilog */ + Atmp = A_align_Q12[7]; + SB = S[0]; + S[0] = SA; + out32_Q10 = SKP_SMLAWB_ovflw( out32_Q10, SA, Atmp ); + out32_Q10 = SKP_SMLAWT_ovflw( out32_Q10, SB, Atmp ); + + /* unrolled loop: end */ + /* apply gain to excitation signal and add to prediction */ + out32_Q10 = SKP_ADD_SAT32( out32_Q10, SKP_SMULWB( Gain_Q26, in[k] ) ); + + /* scale to Q0 */ + out32 = SKP_RSHIFT_ROUND( out32_Q10, 10 ); + + /* saturate output */ + out[k] = (SKP_int16)SKP_SAT16( out32 ); + + /* move result into delay line */ + S[15] = SKP_LSHIFT_SAT32( out32_Q10, 4 ); + } +} + + + + diff --git a/libs/silk/src/SKP_Silk_LP_variable_cutoff.c b/libs/silk/src/SKP_Silk_LP_variable_cutoff.c new file mode 100644 index 0000000000..0ae8354d34 --- /dev/null +++ b/libs/silk/src/SKP_Silk_LP_variable_cutoff.c @@ -0,0 +1,217 @@ + + +/*********************************************************************** + +Copyright (c) 2006-2010, Skype Limited. All rights reserved. +Redistribution and use in source and binary forms, with or without +modification, (subject to the limitations in the disclaimer below) +are permitted provided that the following conditions are met: +- Redistributions of source code must retain the above copyright notice, +this list of conditions and the following disclaimer. +- Redistributions in binary form must reproduce the above copyright +notice, this list of conditions and the following disclaimer in the +documentation and/or other materials provided with the distribution. +- Neither the name of Skype Limited, nor the names of specific +contributors, may be used to endorse or promote products derived from +this software without specific prior written permission. +NO EXPRESS OR IMPLIED LICENSES TO ANY PARTY'S PATENT RIGHTS ARE GRANTED +BY THIS LICENSE.THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND +CONTRIBUTORS ''AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, +BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND +FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE +COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, +INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT +NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF +USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON +ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT +(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE +OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + +***********************************************************************/ + +/* + + Elliptic/Cauer filters designed with 0.1 dB passband ripple, + + + + + + 80 dB minimum stopband attenuation, and + [0.95 : 0.15 : 0.35] normalized cut off frequencies. + +*/ +#include "SKP_Silk_main.h" + +#if SWITCH_TRANSITION_FILTERING + +/* Helper function, that interpolates the filter taps */ +SKP_INLINE void SKP_Silk_LP_interpolate_filter_taps( + SKP_int32 B_Q28[ TRANSITION_NB ], + SKP_int32 A_Q28[ TRANSITION_NA ], + const SKP_int ind, + const SKP_int32 fac_Q16 +) +{ + SKP_int nb, na; + + if( ind < TRANSITION_INT_NUM - 1 ) { + if( fac_Q16 > 0 ) { + if( fac_Q16 == SKP_SAT16( fac_Q16 ) ) { /* fac_Q16 is in range of a 16-bit int */ + /* Piece-wise linear interpolation of B and A */ + for( nb = 0; nb < TRANSITION_NB; nb++ ) { + B_Q28[ nb ] = SKP_SMLAWB( + SKP_Silk_Transition_LP_B_Q28[ ind ][ nb ], + SKP_Silk_Transition_LP_B_Q28[ ind + 1 ][ nb ] - + SKP_Silk_Transition_LP_B_Q28[ ind ][ nb ], + fac_Q16 ); + } + for( na = 0; na < TRANSITION_NA; na++ ) { + A_Q28[ na ] = SKP_SMLAWB( + SKP_Silk_Transition_LP_A_Q28[ ind ][ na ], + SKP_Silk_Transition_LP_A_Q28[ ind + 1 ][ na ] - + SKP_Silk_Transition_LP_A_Q28[ ind ][ na ], + fac_Q16 ); + } + } else if( fac_Q16 == ( 1 << 15 ) ) { /* Neither fac_Q16 nor ( ( 1 << 16 ) - fac_Q16 ) is in range of a 16-bit int */ + + /* Piece-wise linear interpolation of B and A */ + for( nb = 0; nb < TRANSITION_NB; nb++ ) { + B_Q28[ nb ] = SKP_RSHIFT( + SKP_Silk_Transition_LP_B_Q28[ ind ][ nb ] + + SKP_Silk_Transition_LP_B_Q28[ ind + 1 ][ nb ], + 1 ); + } + for( na = 0; na < TRANSITION_NA; na++ ) { + A_Q28[ na ] = SKP_RSHIFT( + SKP_Silk_Transition_LP_A_Q28[ ind ][ na ] + + + + + + + SKP_Silk_Transition_LP_A_Q28[ ind + 1 ][ na ], + 1 ); + } + } else { /* ( ( 1 << 16 ) - fac_Q16 ) is in range of a 16-bit int */ + + SKP_assert( ( ( 1 << 16 ) - fac_Q16 ) == SKP_SAT16( ( ( 1 << 16 ) - fac_Q16) ) ); + /* Piece-wise linear interpolation of B and A */ + for( nb = 0; nb < TRANSITION_NB; nb++ ) { + B_Q28[ nb ] = SKP_SMLAWB( + SKP_Silk_Transition_LP_B_Q28[ ind + 1 ][ nb ], + SKP_Silk_Transition_LP_B_Q28[ ind ][ nb ] - + SKP_Silk_Transition_LP_B_Q28[ ind + 1 ][ nb ], + ( 1 << 16 ) - fac_Q16 ); + } + for( na = 0; na < TRANSITION_NA; na++ ) { + A_Q28[ na ] = SKP_SMLAWB( + SKP_Silk_Transition_LP_A_Q28[ ind + 1 ][ na ], + SKP_Silk_Transition_LP_A_Q28[ ind ][ na ] - + SKP_Silk_Transition_LP_A_Q28[ ind + 1 ][ na ], + ( 1 << 16 ) - fac_Q16 ); + } + } + } else { + SKP_memcpy( B_Q28, SKP_Silk_Transition_LP_B_Q28[ ind ], TRANSITION_NB * sizeof( SKP_int32 ) ); + SKP_memcpy( A_Q28, SKP_Silk_Transition_LP_A_Q28[ ind ], TRANSITION_NA * sizeof( SKP_int32 ) ); + } + } else { + SKP_memcpy( B_Q28, SKP_Silk_Transition_LP_B_Q28[ TRANSITION_INT_NUM - 1 ], TRANSITION_NB * sizeof( SKP_int32 ) ); + SKP_memcpy( A_Q28, SKP_Silk_Transition_LP_A_Q28[ TRANSITION_INT_NUM - 1 ], TRANSITION_NA * sizeof( SKP_int32 ) ); + } +} + +/* Low-pass filter with variable cutoff frequency based on */ +/* piece-wise linear interpolation between elliptic filters */ +/* Start by setting psEncC->transition_frame_no = 1; */ +/* Deactivate by setting psEncC->transition_frame_no = 0; */ +void SKP_Silk_LP_variable_cutoff( + SKP_Silk_LP_state *psLP, /* I/O LP filter state */ + SKP_int16 *out, /* O Low-pass filtered output signal */ + const SKP_int16 *in, /* I Input signal */ + const SKP_int frame_length /* I Frame length */ +) +{ + SKP_int32 B_Q28[ TRANSITION_NB ], A_Q28[ TRANSITION_NA ]; + SKP_int fac_Q16 = 0, ind = 0; + + SKP_assert( psLP->transition_frame_no >= 0 ); + SKP_assert( ( ( ( psLP->transition_frame_no <= TRANSITION_FRAMES_DOWN ) && ( psLP->mode == 0 ) ) || + + + + + + ( ( psLP->transition_frame_no <= TRANSITION_FRAMES_UP ) && ( psLP->mode == 1 ) ) ) ); + + /* Interpolate filter coefficients if needed */ + if( psLP->transition_frame_no > 0 ) { + if( psLP->mode == 0 ) { + if( psLP->transition_frame_no < TRANSITION_FRAMES_DOWN ) { + /* Calculate index and interpolation factor for interpolation */ +#if( TRANSITION_INT_STEPS_DOWN == 32 ) + fac_Q16 = SKP_LSHIFT( psLP->transition_frame_no, 16 - 5 ); +#else + fac_Q16 = SKP_DIV32_16( SKP_LSHIFT( psLP->transition_frame_no, 16 ), TRANSITION_INT_STEPS_DOWN ); +#endif + ind = SKP_RSHIFT( fac_Q16, 16 ); + fac_Q16 -= SKP_LSHIFT( ind, 16 ); + + SKP_assert( ind >= 0 ); + SKP_assert( ind < TRANSITION_INT_NUM ); + + /* Interpolate filter coefficients */ + SKP_Silk_LP_interpolate_filter_taps( B_Q28, A_Q28, ind, fac_Q16 ); + + /* Increment transition frame number for next frame */ + psLP->transition_frame_no++; + + } else if( psLP->transition_frame_no == TRANSITION_FRAMES_DOWN ) { + /* End of transition phase */ + SKP_Silk_LP_interpolate_filter_taps( B_Q28, A_Q28, TRANSITION_INT_NUM - 1, 0 ); + } + } else if( psLP->mode == 1 ) { + if( psLP->transition_frame_no < TRANSITION_FRAMES_UP ) { + /* Calculate index and interpolation factor for interpolation */ +#if( TRANSITION_INT_STEPS_UP == 64 ) + fac_Q16 = SKP_LSHIFT( TRANSITION_FRAMES_UP - psLP->transition_frame_no, 16 - 6 ); +#else + fac_Q16 = SKP_DIV32_16( SKP_LSHIFT( TRANSITION_FRAMES_UP - psLP->transition_frame_no, 16 ), TRANSITION_INT_STEPS_UP ); +#endif + ind = SKP_RSHIFT( fac_Q16, 16 ); + fac_Q16 -= SKP_LSHIFT( ind, 16 ); + + SKP_assert( ind >= 0 ); + SKP_assert( ind < TRANSITION_INT_NUM ); + + /* Interpolate filter coefficients */ + SKP_Silk_LP_interpolate_filter_taps( B_Q28, A_Q28, ind, fac_Q16 ); + + /* Increment transition frame number for next frame */ + psLP->transition_frame_no++; + + + + + + + } else if( psLP->transition_frame_no == TRANSITION_FRAMES_UP ) { + /* End of transition phase */ + SKP_Silk_LP_interpolate_filter_taps( B_Q28, A_Q28, 0, 0 ); + } + } + } + + if( psLP->transition_frame_no > 0 ) { + /* ARMA low-pass filtering */ + SKP_assert( TRANSITION_NB == 3 && TRANSITION_NA == 2 ); + SKP_Silk_biquad_alt( in, B_Q28, A_Q28, psLP->In_LP_State, out, frame_length ); + } else { + /* Instead of using the filter, copy input directly to output */ + SKP_memcpy( out, in, frame_length * sizeof( SKP_int16 ) ); + } +} +#endif + + diff --git a/libs/silk/src/SKP_Silk_LSF_cos_table.c b/libs/silk/src/SKP_Silk_LSF_cos_table.c new file mode 100644 index 0000000000..fe39657c56 --- /dev/null +++ b/libs/silk/src/SKP_Silk_LSF_cos_table.c @@ -0,0 +1,81 @@ + + +/*********************************************************************** + +Copyright (c) 2006-2010, Skype Limited. All rights reserved. +Redistribution and use in source and binary forms, with or without +modification, (subject to the limitations in the disclaimer below) +are permitted provided that the following conditions are met: +- Redistributions of source code must retain the above copyright notice, +this list of conditions and the following disclaimer. +- Redistributions in binary form must reproduce the above copyright +notice, this list of conditions and the following disclaimer in the +documentation and/or other materials provided with the distribution. +- Neither the name of Skype Limited, nor the names of specific +contributors, may be used to endorse or promote products derived from +this software without specific prior written permission. +NO EXPRESS OR IMPLIED LICENSES TO ANY PARTY'S PATENT RIGHTS ARE GRANTED +BY THIS LICENSE.THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND + + + + + +CONTRIBUTORS ''AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, +BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND +FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE +COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, +INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT +NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF +USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON +ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT +(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE +OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + +***********************************************************************/ + +#include "SKP_Silk_SigProc_FIX.h" + +// Q12 values (even) +const SKP_int SKP_Silk_LSFCosTab_FIX_Q12[LSF_COS_TAB_SZ_FIX + 1] = { + 8192, 8190, 8182, 8170, + 8152, 8130, 8104, 8072, + 8034, 7994, 7946, 7896, + 7840, 7778, 7714, 7644, + 7568, 7490, 7406, 7318, + 7226, 7128, 7026, 6922, + 6812, 6698, 6580, 6458, + 6332, 6204, 6070, 5934, + 5792, 5648, 5502, 5352, + 5198, 5040, 4880, 4718, + 4552, 4382, 4212, 4038, + 3862, 3684, 3502, 3320, + 3136, 2948, 2760, 2570, + 2378, 2186, 1990, 1794, + 1598, 1400, 1202, 1002, + 802, 602, 402, 202, + 0, -202, -402, -602, + -802, -1002, -1202, -1400, + -1598, -1794, -1990, -2186, + -2378, -2570, -2760, -2948, + -3136, -3320, -3502, -3684, + -3862, -4038, -4212, -4382, + -4552, -4718, -4880, -5040, + -5198, -5352, -5502, -5648, + -5792, -5934, -6070, -6204, + -6332, -6458, -6580, -6698, + -6812, -6922, -7026, -7128, + -7226, -7318, -7406, -7490, + -7568, -7644, -7714, -7778, + -7840, -7896, -7946, -7994, + -8034, -8072, -8104, -8130, + + + + + + -8152, -8170, -8182, -8190, + -8192 +}; + + diff --git a/libs/silk/src/SKP_Silk_LTP_analysis_filter_FIX.c b/libs/silk/src/SKP_Silk_LTP_analysis_filter_FIX.c new file mode 100644 index 0000000000..14f96a601d --- /dev/null +++ b/libs/silk/src/SKP_Silk_LTP_analysis_filter_FIX.c @@ -0,0 +1,100 @@ + + +/*********************************************************************** + +Copyright (c) 2006-2010, Skype Limited. All rights reserved. +Redistribution and use in source and binary forms, with or without +modification, (subject to the limitations in the disclaimer below) +are permitted provided that the following conditions are met: +- Redistributions of source code must retain the above copyright notice, +this list of conditions and the following disclaimer. +- Redistributions in binary form must reproduce the above copyright +notice, this list of conditions and the following disclaimer in the +documentation and/or other materials provided with the distribution. +- Neither the name of Skype Limited, nor the names of specific +contributors, may be used to endorse or promote products derived from +this software without specific prior written permission. +NO EXPRESS OR IMPLIED LICENSES TO ANY PARTY'S PATENT RIGHTS ARE GRANTED +BY THIS LICENSE.THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND +CONTRIBUTORS ''AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, +BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND +FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE +COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, +INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT +NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF +USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON +ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT +(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE +OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + +***********************************************************************/ + +#include "SKP_Silk_main_FIX.h" + +void SKP_Silk_LTP_analysis_filter_FIX( + SKP_int16 *LTP_res, /* O: LTP residual signal of length NB_SUBFR * ( pre_length + subfr_length ) */ + const SKP_int16 *x, /* I: Pointer to input signal with at least max( pitchL ) preceeding samples */ + const SKP_int16 LTPCoef_Q14[ LTP_ORDER * NB_SUBFR ],/* I: LTP_ORDER LTP coefficients for each NB_SUBFR subframe */ + const SKP_int pitchL[ NB_SUBFR ], /* I: Pitch lag, one for each subframe */ + const SKP_int32 invGains_Qxx[ NB_SUBFR ], /* I: Inverse quantization gains, one for each subframe */ + const SKP_int Qxx, /* I: Inverse quantization gains Q domain */ + const SKP_int subfr_length, /* I: Length of each subframe */ + const SKP_int pre_length /* I: Length of the preceeding samples starting at &x[0] for each subframe */ + + + + + +) +{ + const SKP_int16 *x_ptr, *x_lag_ptr; + SKP_int16 Btmp_Q14[ LTP_ORDER ]; + SKP_int16 *LTP_res_ptr; + SKP_int k, i, j; + SKP_int32 LTP_est; + + x_ptr = x; + LTP_res_ptr = LTP_res; + for( k = 0; k < NB_SUBFR; k++ ) { + + x_lag_ptr = x_ptr - pitchL[ k ]; + for( i = 0; i < LTP_ORDER; i++ ) { + Btmp_Q14[ i ] = LTPCoef_Q14[ k * LTP_ORDER + i ]; + } + + /* LTP analysis FIR filter */ + for( i = 0; i < subfr_length + pre_length; i++ ) { + LTP_res_ptr[ i ] = x_ptr[ i ]; + + /* Long-term prediction */ + LTP_est = SKP_SMULBB( x_lag_ptr[ LTP_ORDER / 2 ], Btmp_Q14[ 0 ] ); + for( j = 1; j < LTP_ORDER; j++ ) { + LTP_est = SKP_SMLABB_ovflw( LTP_est, x_lag_ptr[ LTP_ORDER / 2 - j ], Btmp_Q14[ j ] ); + } + LTP_est = SKP_RSHIFT_ROUND( LTP_est, 14 ); // round and -> Q0 + + /* Subtract long-term prediction */ + LTP_res_ptr[ i ] = (SKP_int16)SKP_SAT16( (SKP_int32)x_ptr[ i ] - LTP_est ); + + /* Scale residual */ + if( Qxx == 16 ) { + LTP_res_ptr[ i ] = SKP_SMULWB( invGains_Qxx[ k ], LTP_res_ptr[ i ] ); + } else { + LTP_res_ptr[ i ] = (SKP_int16)SKP_CHECK_FIT16( SKP_RSHIFT64( SKP_SMULL( invGains_Qxx[ k ], LTP_res_ptr[ i ] ), Qxx ) ); + } + + x_lag_ptr++; + } + + /* Update pointers */ + LTP_res_ptr += subfr_length + pre_length; + x_ptr += subfr_length; + } +} + + + + + + + diff --git a/libs/silk/src/SKP_Silk_LTP_scale_ctrl_FIX.c b/libs/silk/src/SKP_Silk_LTP_scale_ctrl_FIX.c new file mode 100644 index 0000000000..eb3315f946 --- /dev/null +++ b/libs/silk/src/SKP_Silk_LTP_scale_ctrl_FIX.c @@ -0,0 +1,92 @@ + + +/*********************************************************************** + +Copyright (c) 2006-2010, Skype Limited. All rights reserved. +Redistribution and use in source and binary forms, with or without +modification, (subject to the limitations in the disclaimer below) +are permitted provided that the following conditions are met: +- Redistributions of source code must retain the above copyright notice, +this list of conditions and the following disclaimer. +- Redistributions in binary form must reproduce the above copyright +notice, this list of conditions and the following disclaimer in the +documentation and/or other materials provided with the distribution. +- Neither the name of Skype Limited, nor the names of specific +contributors, may be used to endorse or promote products derived from +this software without specific prior written permission. +NO EXPRESS OR IMPLIED LICENSES TO ANY PARTY'S PATENT RIGHTS ARE GRANTED +BY THIS LICENSE.THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND +CONTRIBUTORS ''AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, +BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND +FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE +COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, +INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT +NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF +USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON +ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT +(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE +OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + +***********************************************************************/ + +#include "SKP_Silk_main_FIX.h" + +#define NB_THRESHOLDS 11 + +/* Table containing trained thresholds for LTP scaling */ +static const SKP_int16 LTPScaleThresholds_Q15[ NB_THRESHOLDS ] = +{ + 31129, 26214, 16384, 13107, 9830, 6554, + 4915, 3276, 2621, 2458, 0 +}; + +void SKP_Silk_LTP_scale_ctrl_FIX( + SKP_Silk_encoder_state_FIX *psEnc, /* I/O encoder state FIX */ + SKP_Silk_encoder_control_FIX *psEncCtrl /* I/O encoder control FIX */ +) +{ + + + + + + SKP_int round_loss, frames_per_packet; + SKP_int g_out_Q5, g_limit_Q15, thrld1_Q15, thrld2_Q15; + + /* 1st order high-pass filter */ + psEnc->HPLTPredCodGain_Q7 = SKP_max_int( psEncCtrl->LTPredCodGain_Q7 - psEnc->prevLTPredCodGain_Q7, 0 ) + + SKP_RSHIFT_ROUND( psEnc->HPLTPredCodGain_Q7, 1 ); + + psEnc->prevLTPredCodGain_Q7 = psEncCtrl->LTPredCodGain_Q7; + + /* combine input and filtered input */ + g_out_Q5 = SKP_RSHIFT_ROUND( SKP_RSHIFT( psEncCtrl->LTPredCodGain_Q7, 1 ) + SKP_RSHIFT( psEnc->HPLTPredCodGain_Q7, 1 ), 3 ); + g_limit_Q15 = SKP_Silk_sigm_Q15( g_out_Q5 - ( 3 << 5 ) ); /* mulitplid with 0.5 */ + + /* Default is minimum scaling */ + psEncCtrl->sCmn.LTP_scaleIndex = 0; + + /* Round the loss measure to whole pct */ + round_loss = (SKP_int)psEnc->sCmn.PacketLoss_perc; + + /* Only scale if first frame in packet 0% */ + if( psEnc->sCmn.nFramesInPayloadBuf == 0 ) { + + frames_per_packet = SKP_DIV32_16( psEnc->sCmn.PacketSize_ms, FRAME_LENGTH_MS ); + + round_loss += frames_per_packet - 1; + thrld1_Q15 = LTPScaleThresholds_Q15[ SKP_min_int( round_loss, NB_THRESHOLDS - 1 ) ]; + thrld2_Q15 = LTPScaleThresholds_Q15[ SKP_min_int( round_loss + 1, NB_THRESHOLDS - 1 ) ]; + + if( g_limit_Q15 > thrld1_Q15 ) { + /* Maximum scaling */ + psEncCtrl->sCmn.LTP_scaleIndex = 2; + } else if( g_limit_Q15 > thrld2_Q15 ) { + /* Medium scaling */ + psEncCtrl->sCmn.LTP_scaleIndex = 1; + } + } + psEncCtrl->LTP_scale_Q14 = SKP_Silk_LTPScales_table_Q14[ psEncCtrl->sCmn.LTP_scaleIndex ]; +} + + diff --git a/libs/silk/src/SKP_Silk_MA.c b/libs/silk/src/SKP_Silk_MA.c new file mode 100644 index 0000000000..8f4df5c696 --- /dev/null +++ b/libs/silk/src/SKP_Silk_MA.c @@ -0,0 +1,262 @@ + + +/*********************************************************************** + +Copyright (c) 2006-2010, Skype Limited. All rights reserved. +Redistribution and use in source and binary forms, with or without +modification, (subject to the limitations in the disclaimer below) + + + + + +are permitted provided that the following conditions are met: +- Redistributions of source code must retain the above copyright notice, +this list of conditions and the following disclaimer. +- Redistributions in binary form must reproduce the above copyright +notice, this list of conditions and the following disclaimer in the +documentation and/or other materials provided with the distribution. +- Neither the name of Skype Limited, nor the names of specific +contributors, may be used to endorse or promote products derived from +this software without specific prior written permission. +NO EXPRESS OR IMPLIED LICENSES TO ANY PARTY'S PATENT RIGHTS ARE GRANTED +BY THIS LICENSE.THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND +CONTRIBUTORS ''AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, +BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND +FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE +COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, +INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT +NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF +USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON +ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT +(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE +OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + +***********************************************************************/ + +/* * + * SKP_Silk_MA.c * + * * + * Variable order MA filter * + * * + * Copyright 2006 (c), Skype Limited * + * Date: 060221 * + * */ +#include "SKP_Silk_SigProc_FIX.h" + +/* Variable order MA filter */ +void SKP_Silk_MA( + const SKP_int16 *in, /* I: input signal */ + const SKP_int16 *B, /* I: MA coefficients, Q13 [order+1] */ + SKP_int32 *S, /* I/O: state vector [order] */ + SKP_int16 *out, /* O: output signal */ + const SKP_int32 len, /* I: signal length */ + const SKP_int32 order /* I: filter order */ +) +{ + SKP_int k, d, in16; + SKP_int32 out32; + + for( k = 0; k < len; k++ ) { + + + + + + in16 = in[ k ]; + out32 = SKP_SMLABB( S[ 0 ], in16, B[ 0 ] ); + out32 = SKP_RSHIFT_ROUND( out32, 13 ); + + for( d = 1; d < order; d++ ) { + S[ d - 1 ] = SKP_SMLABB( S[ d ], in16, B[ d ] ); + } + S[ order - 1 ] = SKP_SMULBB( in16, B[ order ] ); + + /* Limit */ + out[ k ] = (SKP_int16)SKP_SAT16( out32 ); + } +} +/* Variable order MA prediction error filter */ +void SKP_Silk_MA_Prediction( + const SKP_int16 *in, /* I: Input signal */ + const SKP_int16 *B, /* I: MA prediction coefficients, Q12 [order] */ + SKP_int32 *S, /* I/O: State vector [order] */ + SKP_int16 *out, /* O: Output signal */ + const SKP_int32 len, /* I: Signal length */ + const SKP_int32 order /* I: Filter order */ +) +{ + SKP_int k, d, in16; + SKP_int32 out32; + SKP_int32 B32; + + if( ( order & 1 ) == 0 && (SKP_int32)( (SKP_int_ptr_size)B & 3 ) == 0 ) { + /* Even order and 4-byte aligned coefficient array */ + + /* NOTE: the code below loads two int16 values in an int32, and multiplies each using the */ + /* SMLABB and SMLABT instructions. On a big-endian CPU the two int16 variables would be */ + /* loaded in reverse order and the code will give the wrong result. In that case swapping */ + /* the SMLABB and SMLABT instructions should solve the problem. */ + for( k = 0; k < len; k++ ) { + in16 = in[ k ]; + out32 = SKP_LSHIFT( in16, 12 ) - S[ 0 ]; + out32 = SKP_RSHIFT_ROUND( out32, 12 ); + + for( d = 0; d < order - 2; d += 2 ) { + B32 = *( (SKP_int32*)&B[ d ] ); /* read two coefficients at once */ + S[ d ] = SKP_SMLABB_ovflw( S[ d + 1 ], in16, B32 ); + S[ d + 1 ] = SKP_SMLABT_ovflw( S[ d + 2 ], in16, B32 ); + } + B32 = *( (SKP_int32*)&B[ d ] ); /* read two coefficients at once */ + S[ order - 2 ] = SKP_SMLABB_ovflw( S[ order - 1 ], in16, B32 ); + S[ order - 1 ] = SKP_SMULBT( in16, B32 ); + + + + + + + /* Limit */ + out[ k ] = (SKP_int16)SKP_SAT16( out32 ); + } + } else { + /* Odd order or not 4-byte aligned coefficient array */ + for( k = 0; k < len; k++ ) { + in16 = in[ k ]; + out32 = SKP_LSHIFT( in16, 12 ) - S[ 0 ]; + out32 = SKP_RSHIFT_ROUND( out32, 12 ); + + for( d = 0; d < order - 1; d++ ) { + S[ d ] = SKP_SMLABB_ovflw( S[ d + 1 ], in16, B[ d ] ); + } + S[ order - 1 ] = SKP_SMULBB( in16, B[ order - 1 ] ); + + /* Limit */ + out[ k ] = (SKP_int16)SKP_SAT16( out32 ); + } + } +} + +void SKP_Silk_MA_Prediction_Q13( + const SKP_int16 *in, /* I: input signal */ + const SKP_int16 *B, /* I: MA prediction coefficients, Q13 [order] */ + SKP_int32 *S, /* I/O: state vector [order] */ + SKP_int16 *out, /* O: output signal */ + SKP_int32 len, /* I: signal length */ + SKP_int32 order /* I: filter order */ +) +{ + SKP_int k, d, in16; + SKP_int32 out32, B32; + + if( ( order & 1 ) == 0 && (SKP_int32)( (SKP_int_ptr_size)B & 3 ) == 0 ) { + /* Even order and 4-byte aligned coefficient array */ + + /* NOTE: the code below loads two int16 values in an int32, and multiplies each using the */ + /* SMLABB and SMLABT instructions. On a big-endian CPU the two int16 variables would be */ + /* loaded in reverse order and the code will give the wrong result. In that case swapping */ + /* the SMLABB and SMLABT instructions should solve the problem. */ + for( k = 0; k < len; k++ ) { + in16 = in[ k ]; + out32 = SKP_LSHIFT( in16, 13 ) - S[ 0 ]; + out32 = SKP_RSHIFT_ROUND( out32, 13 ); + + for( d = 0; d < order - 2; d += 2 ) { + B32 = *( (SKP_int32*)&B[ d ] ); /* read two coefficients at once */ + S[ d ] = SKP_SMLABB( S[ d + 1 ], in16, B32 ); + + + + + + S[ d + 1 ] = SKP_SMLABT( S[ d + 2 ], in16, B32 ); + } + B32 = *( (SKP_int32*)&B[ d ] ); /* read two coefficients at once */ + S[ order - 2 ] = SKP_SMLABB( S[ order - 1 ], in16, B32 ); + S[ order - 1 ] = SKP_SMULBT( in16, B32 ); + + /* Limit */ + out[ k ] = (SKP_int16)SKP_SAT16( out32 ); + } + } else { + /* Odd order or not 4-byte aligned coefficient array */ + for( k = 0; k < len; k++ ) { + in16 = in[ k ]; + out32 = SKP_LSHIFT( in16, 13 ) - S[ 0 ]; + out32 = SKP_RSHIFT_ROUND( out32, 13 ); + + for( d = 0; d < order - 1; d++ ) { + S[ d ] = SKP_SMLABB( S[ d + 1 ], in16, B[ d ] ); + } + S[ order - 1 ] = SKP_SMULBB( in16, B[ order - 1 ] ); + + /* Limit */ + out[ k ] = (SKP_int16)SKP_SAT16( out32 ); + } + } +} +/* Variable order MA prediction error filter. */ +/* Inverse filter of SKP_Silk_LPC_synthesis_filter */ +void SKP_Silk_LPC_analysis_filter( + const SKP_int16 *in, /* I: Input signal */ + const SKP_int16 *B, /* I: MA prediction coefficients, Q12 [order] */ + SKP_int16 *S, /* I/O: State vector [order] */ + SKP_int16 *out, /* O: Output signal */ + const SKP_int32 len, /* I: Signal length */ + const SKP_int32 Order /* I: Filter order */ +) +{ + SKP_int k, j, idx, Order_half = SKP_RSHIFT( Order, 1 ); + SKP_int32 Btmp, B_align_Q12[ SigProc_MAX_ORDER_LPC >> 1 ], out32_Q12, out32; + SKP_int16 SA, SB; + /* Order must be even */ + SKP_assert( 2 * Order_half == Order ); + + /* Combine two A_Q12 values and ensure 32-bit alignment */ + for( k = 0; k < Order_half; k++ ) { + idx = SKP_SMULBB( 2, k ); + B_align_Q12[ k ] = ( ( (SKP_int32)B[ idx ] ) & 0x0000ffff ) | SKP_LSHIFT( (SKP_int32)B[ idx + 1 ], 16 ); + } + + + + + + /* S[] values are in Q0 */ + for( k = 0; k < len; k++ ) { + SA = S[ 0 ]; + out32_Q12 = 0; + for( j = 0; j < ( Order_half - 1 ); j++ ) { + idx = SKP_SMULBB( 2, j ) + 1; + /* Multiply-add two prediction coefficients for each loop */ + Btmp = B_align_Q12[ j ]; + SB = S[ idx ]; + S[ idx ] = SA; + out32_Q12 = SKP_SMLABB( out32_Q12, SA, Btmp ); + out32_Q12 = SKP_SMLABT( out32_Q12, SB, Btmp ); + SA = S[ idx + 1 ]; + S[ idx + 1 ] = SB; + } + + /* Unrolled loop: epilog */ + Btmp = B_align_Q12[ Order_half - 1 ]; + SB = S[ Order - 1 ]; + S[ Order - 1 ] = SA; + out32_Q12 = SKP_SMLABB( out32_Q12, SA, Btmp ); + out32_Q12 = SKP_SMLABT( out32_Q12, SB, Btmp ); + + /* Subtract prediction */ + out32_Q12 = SKP_SUB_SAT32( SKP_LSHIFT( (SKP_int32)in[ k ], 12 ), out32_Q12 ); + + /* Scale to Q0 */ + out32 = SKP_RSHIFT_ROUND( out32_Q12, 12 ); + + /* Saturate output */ + out[ k ] = (SKP_int16)SKP_SAT16( out32 ); + + /* Move input line */ + S[ 0 ] = in[ k ]; + } +} + + diff --git a/libs/silk/src/SKP_Silk_NLSF2A.c b/libs/silk/src/SKP_Silk_NLSF2A.c new file mode 100644 index 0000000000..f1bcb364e5 --- /dev/null +++ b/libs/silk/src/SKP_Silk_NLSF2A.c @@ -0,0 +1,174 @@ + + + + + +/*********************************************************************** + +Copyright (c) 2006-2010, Skype Limited. All rights reserved. +Redistribution and use in source and binary forms, with or without +modification, (subject to the limitations in the disclaimer below) +are permitted provided that the following conditions are met: +- Redistributions of source code must retain the above copyright notice, +this list of conditions and the following disclaimer. +- Redistributions in binary form must reproduce the above copyright +notice, this list of conditions and the following disclaimer in the +documentation and/or other materials provided with the distribution. +- Neither the name of Skype Limited, nor the names of specific +contributors, may be used to endorse or promote products derived from +this software without specific prior written permission. +NO EXPRESS OR IMPLIED LICENSES TO ANY PARTY'S PATENT RIGHTS ARE GRANTED +BY THIS LICENSE.THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND +CONTRIBUTORS ''AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, +BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND +FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE +COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, +INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT +NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF +USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON +ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT +(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE +OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + +***********************************************************************/ + +/* conversion between prediction filter coefficients and LSFs */ +/* order should be even */ +/* a piecewise linear approximation maps LSF <-> cos(LSF) */ +/* therefore the result is not accurate LSFs, but the two */ +/* function are accurate inverses of each other */ + +#include "SKP_Silk_SigProc_FIX.h" + +/* helper function for NLSF2A(..) */ +SKP_INLINE void SKP_Silk_NLSF2A_find_poly( + SKP_int32 *out, /* o intermediate polynomial, Q20 */ + const SKP_int32 *cLSF, /* i vector of interleaved 2*cos(LSFs), Q20 */ + SKP_int dd /* i polynomial order (= 1/2 * filter order) */ +) +{ + SKP_int k, n; + SKP_int32 ftmp; + + out[0] = SKP_LSHIFT( 1, 20 ); + + + + + + out[1] = -cLSF[0]; + for( k = 1; k < dd; k++ ) { + ftmp = cLSF[2*k]; // Q20 + out[k+1] = SKP_LSHIFT( out[k-1], 1 ) - (SKP_int32)SKP_RSHIFT_ROUND64( SKP_SMULL( ftmp, out[k] ), 20 ); + for( n = k; n > 1; n-- ) { + out[n] += out[n-2] - (SKP_int32)SKP_RSHIFT_ROUND64( SKP_SMULL( ftmp, out[n-1] ), 20 ); + } + out[1] -= ftmp; + } +} + +/* compute whitening filter coefficients from normalized line spectral frequencies */ +void SKP_Silk_NLSF2A( + SKP_int16 *a, /* o monic whitening filter coefficients in Q12, [d] */ + const SKP_int *NLSF, /* i normalized line spectral frequencies in Q15, [d] */ + const SKP_int d /* i filter order (should be even) */ +) +{ + SKP_int k, i, dd; + SKP_int32 cos_LSF_Q20[SigProc_MAX_ORDER_LPC]; + SKP_int32 P[SigProc_MAX_ORDER_LPC/2+1], Q[SigProc_MAX_ORDER_LPC/2+1]; + SKP_int32 Ptmp, Qtmp; + SKP_int32 f_int; + SKP_int32 f_frac; + SKP_int32 cos_val, delta; + SKP_int32 a_int32[SigProc_MAX_ORDER_LPC]; + SKP_int32 maxabs, absval, idx=0, sc_Q16; + + SKP_assert(LSF_COS_TAB_SZ_FIX == 128); + + /* convert LSFs to 2*cos(LSF(i)), using piecewise linear curve from table */ + for( k = 0; k < d; k++ ) { + SKP_assert(NLSF[k] >= 0 ); + SKP_assert(NLSF[k] <= 32767 ); + + /* f_int on a scale 0-127 (rounded down) */ + f_int = SKP_RSHIFT( NLSF[k], 15 - 7 ); + + /* f_frac, range: 0..255 */ + f_frac = NLSF[k] - SKP_LSHIFT( f_int, 15 - 7 ); + + SKP_assert(f_int >= 0); + SKP_assert(f_int < LSF_COS_TAB_SZ_FIX ); + + /* Read start and end value from table */ + cos_val = SKP_Silk_LSFCosTab_FIX_Q12[ f_int ]; /* Q12 */ + delta = SKP_Silk_LSFCosTab_FIX_Q12[ f_int + 1 ] - cos_val; /* Q12, with a range of 0..200 */ + + + + + + + /* Linear interpolation */ + cos_LSF_Q20[k] = SKP_LSHIFT( cos_val, 8 ) + SKP_MUL( delta, f_frac ); /* Q20 */ + } + + dd = SKP_RSHIFT( d, 1 ); + + /* generate even and odd polynomials using convolution */ + SKP_Silk_NLSF2A_find_poly( P, &cos_LSF_Q20[0], dd ); + SKP_Silk_NLSF2A_find_poly( Q, &cos_LSF_Q20[1], dd ); + + /* convert even and odd polynomials to SKP_int32 Q12 filter coefs */ + for( k = 0; k < dd; k++ ) { + Ptmp = P[k+1] + P[k]; + Qtmp = Q[k+1] - Q[k]; + + /* the Ptmp and Qtmp values at this stage need to fit in int32 */ + + a_int32[k] = -SKP_RSHIFT_ROUND( Ptmp + Qtmp, 9 ); /* Q20 -> Q12 */ + a_int32[d-k-1] = SKP_RSHIFT_ROUND( Qtmp - Ptmp, 9 ); /* Q20 -> Q12 */ + } + + /* Limit the maximum absolute value of the prediction coefficients */ + for( i = 0; i < 10; i++ ) { + /* Find maximum absolute value and its index */ + maxabs = 0; + for( k = 0; k < d; k++ ) { + absval = SKP_abs( a_int32[k] ); + if( absval > maxabs ) { + maxabs = absval; + idx = k; + } + } + + if( maxabs > SKP_int16_MAX ) { + /* Reduce magnitude of prediction coefficients */ + sc_Q16 = 65470 - SKP_DIV32( SKP_MUL( 65470 >> 2, maxabs - SKP_int16_MAX ), + SKP_RSHIFT32( SKP_MUL( maxabs, idx + 1), 2 ) ); + SKP_Silk_bwexpander_32( a_int32, d, sc_Q16 ); + } else { + break; + } + } + + /* Reached the last iteration */ + if( i == 10 ) { + SKP_assert(0); + for( k = 0; k < d; k++ ) { + a_int32[k] = SKP_SAT16( a_int32[k] ); + + + + + + } + } + + /* Return as SKP_int16 Q12 coefficients */ + for( k = 0; k < d; k++ ) { + a[k] = (SKP_int16)a_int32[k]; + } +} + + diff --git a/libs/silk/src/SKP_Silk_NLSF2A_stable.c b/libs/silk/src/SKP_Silk_NLSF2A_stable.c new file mode 100644 index 0000000000..141b360711 --- /dev/null +++ b/libs/silk/src/SKP_Silk_NLSF2A_stable.c @@ -0,0 +1,68 @@ + + +/*********************************************************************** + +Copyright (c) 2006-2010, Skype Limited. All rights reserved. +Redistribution and use in source and binary forms, with or without +modification, (subject to the limitations in the disclaimer below) +are permitted provided that the following conditions are met: +- Redistributions of source code must retain the above copyright notice, +this list of conditions and the following disclaimer. +- Redistributions in binary form must reproduce the above copyright +notice, this list of conditions and the following disclaimer in the +documentation and/or other materials provided with the distribution. +- Neither the name of Skype Limited, nor the names of specific +contributors, may be used to endorse or promote products derived from +this software without specific prior written permission. +NO EXPRESS OR IMPLIED LICENSES TO ANY PARTY'S PATENT RIGHTS ARE GRANTED +BY THIS LICENSE.THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND +CONTRIBUTORS ''AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, +BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND +FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE +COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, +INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT +NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF +USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON +ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT +(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE +OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + +***********************************************************************/ + +#include "SKP_Silk_main.h" + +/* Convert NLSF parameters to stable AR prediction filter coefficients */ +void SKP_Silk_NLSF2A_stable( + SKP_int16 pAR_Q12[ MAX_LPC_ORDER ], /* O Stabilized AR coefs [LPC_order] */ + const SKP_int pNLSF[ MAX_LPC_ORDER ], /* I NLSF vector [LPC_order] */ + + + + + + const SKP_int LPC_order /* I LPC/LSF order */ +) +{ + SKP_int i; + SKP_int32 invGain_Q30; + + SKP_Silk_NLSF2A( pAR_Q12, pNLSF, LPC_order ); + + /* Ensure stable LPCs */ + for( i = 0; i < MAX_LPC_STABILIZE_ITERATIONS; i++ ) { + if( SKP_Silk_LPC_inverse_pred_gain( &invGain_Q30, pAR_Q12, LPC_order ) == 1 ) { + SKP_Silk_bwexpander( pAR_Q12, LPC_order, 65536 - SKP_SMULBB( 66, i ) ); /* 66_Q16 = 0.001 */ + } else { + break; + } + } + + /* Reached the last iteration */ + if( i == MAX_LPC_STABILIZE_ITERATIONS ) { + for( i = 0; i < LPC_order; i++ ) { + pAR_Q12[ i ] = 0; + } + } +} + + diff --git a/libs/silk/src/SKP_Silk_NLSF_MSVQ_decode.c b/libs/silk/src/SKP_Silk_NLSF_MSVQ_decode.c new file mode 100644 index 0000000000..de55c40f36 --- /dev/null +++ b/libs/silk/src/SKP_Silk_NLSF_MSVQ_decode.c @@ -0,0 +1,107 @@ + + +/*********************************************************************** + +Copyright (c) 2006-2010, Skype Limited. All rights reserved. +Redistribution and use in source and binary forms, with or without +modification, (subject to the limitations in the disclaimer below) +are permitted provided that the following conditions are met: +- Redistributions of source code must retain the above copyright notice, +this list of conditions and the following disclaimer. +- Redistributions in binary form must reproduce the above copyright +notice, this list of conditions and the following disclaimer in the +documentation and/or other materials provided with the distribution. +- Neither the name of Skype Limited, nor the names of specific +contributors, may be used to endorse or promote products derived from +this software without specific prior written permission. +NO EXPRESS OR IMPLIED LICENSES TO ANY PARTY'S PATENT RIGHTS ARE GRANTED +BY THIS LICENSE.THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND +CONTRIBUTORS ''AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, +BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND +FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE + + + + + +COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, +INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT +NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF +USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON +ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT +(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE +OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + +***********************************************************************/ + +#include "SKP_Silk_main.h" + +/* NLSF vector decoder */ +void SKP_Silk_NLSF_MSVQ_decode( + SKP_int *pNLSF_Q15, /* O Pointer to decoded output vector [LPC_ORDER x 1] */ + const SKP_Silk_NLSF_CB_struct *psNLSF_CB, /* I Pointer to NLSF codebook struct */ + const SKP_int *NLSFIndices, /* I Pointer to NLSF indices [nStages x 1] */ + const SKP_int LPC_order /* I LPC order used */ +) +{ + const SKP_int16 *pCB_element; + SKP_int s; + SKP_int i; + + /* Check that each index is within valid range */ + SKP_assert( 0 <= NLSFIndices[ 0 ] && NLSFIndices[ 0 ] < psNLSF_CB->CBStages[ 0 ].nVectors ); + + /* Point to the first vector element */ + pCB_element = &psNLSF_CB->CBStages[ 0 ].CB_NLSF_Q15[ SKP_MUL( NLSFIndices[ 0 ], LPC_order ) ]; + + /* Initialize with the codebook vector from stage 0 */ + for( i = 0; i < LPC_order; i++ ) { + pNLSF_Q15[ i ] = (SKP_int)pCB_element[ i ]; + } + + for( s = 1; s < psNLSF_CB->nStages; s++ ) { + /* Check that each index is within valid range */ + SKP_assert( 0 <= NLSFIndices[ s ] && NLSFIndices[ s ] < psNLSF_CB->CBStages[ s ].nVectors ); + + if( LPC_order == 16 ) { + /* Point to the first vector element */ + pCB_element = &psNLSF_CB->CBStages[ s ].CB_NLSF_Q15[ SKP_LSHIFT( NLSFIndices[ s ], 4 ) ]; + + /* Add the codebook vector from the current stage */ + pNLSF_Q15[ 0 ] += pCB_element[ 0 ]; + pNLSF_Q15[ 1 ] += pCB_element[ 1 ]; + pNLSF_Q15[ 2 ] += pCB_element[ 2 ]; + pNLSF_Q15[ 3 ] += pCB_element[ 3 ]; + + + + + + pNLSF_Q15[ 4 ] += pCB_element[ 4 ]; + pNLSF_Q15[ 5 ] += pCB_element[ 5 ]; + pNLSF_Q15[ 6 ] += pCB_element[ 6 ]; + pNLSF_Q15[ 7 ] += pCB_element[ 7 ]; + pNLSF_Q15[ 8 ] += pCB_element[ 8 ]; + pNLSF_Q15[ 9 ] += pCB_element[ 9 ]; + pNLSF_Q15[ 10 ] += pCB_element[ 10 ]; + pNLSF_Q15[ 11 ] += pCB_element[ 11 ]; + pNLSF_Q15[ 12 ] += pCB_element[ 12 ]; + pNLSF_Q15[ 13 ] += pCB_element[ 13 ]; + pNLSF_Q15[ 14 ] += pCB_element[ 14 ]; + pNLSF_Q15[ 15 ] += pCB_element[ 15 ]; + } else { + /* Point to the first vector element */ + pCB_element = &psNLSF_CB->CBStages[ s ].CB_NLSF_Q15[ SKP_SMULBB( NLSFIndices[ s ], LPC_order ) ]; + + /* Add the codebook vector from the current stage */ + for( i = 0; i < LPC_order; i++ ) { + pNLSF_Q15[ i ] += pCB_element[ i ]; + } + } + } + + /* NLSF stabilization */ + SKP_Silk_NLSF_stabilize( pNLSF_Q15, psNLSF_CB->NDeltaMin_Q15, LPC_order ); +} + + diff --git a/libs/silk/src/SKP_Silk_NLSF_MSVQ_encode_FIX.c b/libs/silk/src/SKP_Silk_NLSF_MSVQ_encode_FIX.c new file mode 100644 index 0000000000..f7c81d0d53 --- /dev/null +++ b/libs/silk/src/SKP_Silk_NLSF_MSVQ_encode_FIX.c @@ -0,0 +1,252 @@ + + +/*********************************************************************** + +Copyright (c) 2006-2010, Skype Limited. All rights reserved. +Redistribution and use in source and binary forms, with or without +modification, (subject to the limitations in the disclaimer below) +are permitted provided that the following conditions are met: +- Redistributions of source code must retain the above copyright notice, +this list of conditions and the following disclaimer. +- Redistributions in binary form must reproduce the above copyright +notice, this list of conditions and the following disclaimer in the +documentation and/or other materials provided with the distribution. +- Neither the name of Skype Limited, nor the names of specific +contributors, may be used to endorse or promote products derived from +this software without specific prior written permission. +NO EXPRESS OR IMPLIED LICENSES TO ANY PARTY'S PATENT RIGHTS ARE GRANTED +BY THIS LICENSE.THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND +CONTRIBUTORS ''AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, + + + + + +BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND +FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE +COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, +INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT +NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF +USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON +ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT +(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE +OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + +***********************************************************************/ + +#include "SKP_Silk_main_FIX.h" + +/***********************/ +/* NLSF vector encoder */ +/***********************/ +void SKP_Silk_NLSF_MSVQ_encode_FIX( + SKP_int *NLSFIndices, /* O Pointer to codebook path vector [CB_STAGES x1] */ + SKP_int *pNLSF_Q15, /* I/O Pointer to quantized NLSF vector [LPC_order x1] */ + const SKP_Silk_NLSF_CB_struct *psNLSF_CB, /* I Pointer to codebook object */ + const SKP_int *pNLSF_q_Q15_prev, /* I Pointer to previously quantized NLSF vector [LPC_order x1] */ + const SKP_int *pW_Q6, /* I Pointer to NLSF weight vector [LPC_order x1] */ + const SKP_int NLSF_mu_Q15, /* I Rate weight for the RD optimization */ + const SKP_int NLSF_mu_fluc_red_Q16, /* I Fluctuation error weight for fluctuation reduction */ + const SKP_int NLSF_MSVQ_Max_Survivors,/* I Maximum number of survivors from each stage */ + const SKP_int LPC_order, /* I LPC order */ + const SKP_int deactivate_fluc_red /* I Deactivate fluctuation reduction, e.g. right after a reset */ +) +{ + SKP_int i, s, k, cur_survivors = 0, prev_survivors, input_index, cb_index, bestIndex; + SKP_int32 rateDistThreshold_Q18; + SKP_int pNLSF_in_Q15[ MAX_LPC_ORDER ]; +#if( NLSF_MSVQ_FLUCTUATION_REDUCTION == 1 ) + SKP_int32 se_Q15, wsse_Q20, bestRateDist_Q20; +#endif + +#if( LOW_COMPLEXITY_ONLY == 1 ) + SKP_int pTempIndices[ NLSF_MSVQ_TREE_SEARCH_MAX_VECTORS_EVALUATED_LC_MODE ]; + SKP_int32 pRateDist_Q18[ NLSF_MSVQ_TREE_SEARCH_MAX_VECTORS_EVALUATED_LC_MODE ]; + SKP_int32 pRate_Q5[ MAX_NLSF_MSVQ_SURVIVORS_LC_MODE ]; + SKP_int32 pRate_new_Q5[ MAX_NLSF_MSVQ_SURVIVORS_LC_MODE ]; + SKP_int pPath[ MAX_NLSF_MSVQ_SURVIVORS_LC_MODE * NLSF_MSVQ_MAX_CB_STAGES ]; + SKP_int pPath_new[ MAX_NLSF_MSVQ_SURVIVORS_LC_MODE * NLSF_MSVQ_MAX_CB_STAGES ]; + SKP_int pRes_Q15[ MAX_NLSF_MSVQ_SURVIVORS_LC_MODE * MAX_LPC_ORDER ]; + SKP_int pRes_new_Q15[ MAX_NLSF_MSVQ_SURVIVORS_LC_MODE * MAX_LPC_ORDER ]; +#else + SKP_int pTempIndices[ NLSF_MSVQ_TREE_SEARCH_MAX_VECTORS_EVALUATED ]; + + + + + + SKP_int32 pRateDist_Q18[ NLSF_MSVQ_TREE_SEARCH_MAX_VECTORS_EVALUATED ]; + SKP_int32 pRate_Q5[ MAX_NLSF_MSVQ_SURVIVORS ]; + SKP_int32 pRate_new_Q5[ MAX_NLSF_MSVQ_SURVIVORS ]; + SKP_int pPath[ MAX_NLSF_MSVQ_SURVIVORS * NLSF_MSVQ_MAX_CB_STAGES ]; + SKP_int pPath_new[ MAX_NLSF_MSVQ_SURVIVORS * NLSF_MSVQ_MAX_CB_STAGES ]; + SKP_int pRes_Q15[ MAX_NLSF_MSVQ_SURVIVORS * MAX_LPC_ORDER ]; + SKP_int pRes_new_Q15[ MAX_NLSF_MSVQ_SURVIVORS * MAX_LPC_ORDER ]; +#endif + + const SKP_int *pConstInt; + SKP_int *pInt; + const SKP_int16 *pCB_element; + const SKP_Silk_NLSF_CB_Stage_struct *pCurrentCBStage; + + SKP_assert( NLSF_MSVQ_Max_Survivors <= MAX_NLSF_MSVQ_SURVIVORS ); + SKP_assert( ( LOW_COMPLEXITY_ONLY == 0 ) || ( NLSF_MSVQ_Max_Survivors <= MAX_NLSF_MSVQ_SURVIVORS_LC_MODE ) ); + + + + /* Copy the input vector */ + SKP_memcpy( pNLSF_in_Q15, pNLSF_Q15, LPC_order * sizeof( SKP_int ) ); + + /****************************************************/ + /* Tree search for the multi-stage vector quantizer */ + /****************************************************/ + + /* Clear accumulated rates */ + SKP_memset( pRate_Q5, 0, NLSF_MSVQ_Max_Survivors * sizeof( SKP_int32 ) ); + + /* Copy LSFs into residual signal vector */ + for( i = 0; i < LPC_order; i++ ) { + pRes_Q15[ i ] = pNLSF_Q15[ i ]; + } + + /* Set first stage values */ + prev_survivors = 1; + + /* Loop over all stages */ + for( s = 0; s < psNLSF_CB->nStages; s++ ) { + + /* Set a pointer to the current stage codebook */ + pCurrentCBStage = &psNLSF_CB->CBStages[ s ]; + + /* Calculate the number of survivors in the current stage */ + cur_survivors = SKP_min_32( NLSF_MSVQ_Max_Survivors, SKP_SMULBB( prev_survivors, pCurrentCBStage->nVectors ) ); + + /* Nearest neighbor clustering for multiple input data vectors */ + SKP_Silk_NLSF_VQ_nearest_neighbor_FIX( pRateDist_Q18, pCurrentCBStage, pRes_Q15, pW_Q6, + + + + + + pRate_Q5, NLSF_mu_Q15, prev_survivors, LPC_order ); + + /* Sort the rate-distortion errors */ + SKP_Silk_insertion_sort_increasing( pRateDist_Q18, pTempIndices, + prev_survivors * pCurrentCBStage->nVectors, cur_survivors ); + + /* Discard survivors with rate-distortion values too far above the best one */ + if( pRateDist_Q18[ 0 ] < SKP_int32_MAX / NLSF_MSVQ_SURV_MAX_REL_RD ) { + rateDistThreshold_Q18 = SKP_MUL( NLSF_MSVQ_SURV_MAX_REL_RD, pRateDist_Q18[ 0 ] ); + while( pRateDist_Q18[ cur_survivors - 1 ] > rateDistThreshold_Q18 && cur_survivors > 1 ) { + cur_survivors--; + } + } + /* Update accumulated codebook contributions for the 'cur_survivors' best codebook indices */ + for( k = 0; k < cur_survivors; k++ ) { + if( s > 0 ) { + /* Find the indices of the input and the codebook vector */ + if( pCurrentCBStage->nVectors == 8 ) { + input_index = SKP_RSHIFT( pTempIndices[ k ], 3 ); + cb_index = pTempIndices[ k ] & 7; + } else { + input_index = SKP_DIV32_16( pTempIndices[ k ], pCurrentCBStage->nVectors ); + cb_index = pTempIndices[ k ] - SKP_SMULBB( input_index, pCurrentCBStage->nVectors ); + } + } else { + /* Find the indices of the input and the codebook vector */ + input_index = 0; + cb_index = pTempIndices[ k ]; + } + + /* Subtract new contribution from the previous residual vector for each of 'cur_survivors' */ + pConstInt = &pRes_Q15[ SKP_SMULBB( input_index, LPC_order ) ]; + pCB_element = &pCurrentCBStage->CB_NLSF_Q15[ SKP_SMULBB( cb_index, LPC_order ) ]; + pInt = &pRes_new_Q15[ SKP_SMULBB( k, LPC_order ) ]; + for( i = 0; i < LPC_order; i++ ) { + pInt[ i ] = pConstInt[ i ] - (SKP_int)pCB_element[ i ]; + } + + /* Update accumulated rate for stage 1 to the current */ + pRate_new_Q5[ k ] = pRate_Q5[ input_index ] + pCurrentCBStage->Rates_Q5[ cb_index ]; + + /* Copy paths from previous matrix, starting with the best path */ + pConstInt = &pPath[ SKP_SMULBB( input_index, psNLSF_CB->nStages ) ]; + pInt = &pPath_new[ SKP_SMULBB( k, psNLSF_CB->nStages ) ]; + for( i = 0; i < s; i++ ) { + pInt[ i ] = pConstInt[ i ]; + } + /* Write the current stage indices for the 'cur_survivors' to the best path matrix */ + + + + + + pInt[ s ] = cb_index; + } + + if( s < psNLSF_CB->nStages - 1 ) { + /* Copy LSF residual matrix for next stage */ + SKP_memcpy( pRes_Q15, pRes_new_Q15, SKP_SMULBB( cur_survivors, LPC_order ) * sizeof( SKP_int ) ); + + /* Copy rate vector for next stage */ + SKP_memcpy( pRate_Q5, pRate_new_Q5, cur_survivors * sizeof( SKP_int32 ) ); + + /* Copy best path matrix for next stage */ + SKP_memcpy( pPath, pPath_new, SKP_SMULBB( cur_survivors, psNLSF_CB->nStages ) * sizeof( SKP_int ) ); + } + + prev_survivors = cur_survivors; + } + + /* (Preliminary) index of the best survivor, later to be decoded */ + bestIndex = 0; +#if( NLSF_MSVQ_FLUCTUATION_REDUCTION == 1 ) + /******************************/ + /* NLSF fluctuation reduction */ + /******************************/ + if( deactivate_fluc_red != 1 ) { + + /* Search among all survivors, now taking also weighted fluctuation errors into account */ + bestRateDist_Q20 = SKP_int32_MAX; + for( s = 0; s < cur_survivors; s++ ) { + /* Decode survivor to compare with previous quantized NLSF vector */ + SKP_Silk_NLSF_MSVQ_decode( pNLSF_Q15, psNLSF_CB, &pPath_new[ SKP_SMULBB( s, psNLSF_CB->nStages ) ], LPC_order ); + + /* Compare decoded NLSF vector with the previously quantized vector */ + wsse_Q20 = 0; + for( i = 0; i < LPC_order; i += 2 ) { + /* Compute weighted squared quantization error for index i */ + se_Q15 = pNLSF_Q15[ i ] - pNLSF_q_Q15_prev[ i ]; // range: [ -32767 : 32767 ] + wsse_Q20 = SKP_SMLAWB( wsse_Q20, SKP_SMULBB( se_Q15, se_Q15 ), pW_Q6[ i ] ); + + /* Compute weighted squared quantization error for index i + 1 */ + se_Q15 = pNLSF_Q15[ i + 1 ] - pNLSF_q_Q15_prev[ i + 1 ]; // range: [ -32767 : 32767 ] + wsse_Q20 = SKP_SMLAWB( wsse_Q20, SKP_SMULBB( se_Q15, se_Q15 ), pW_Q6[ i + 1 ] ); + } + SKP_assert( wsse_Q20 >= 0 ); + + /* Add the fluctuation reduction penalty to the rate distortion error */ + wsse_Q20 = SKP_ADD_POS_SAT32( pRateDist_Q18[ s ], SKP_SMULWB( wsse_Q20, NLSF_mu_fluc_red_Q16 ) ); + + /* Keep index of best survivor */ + + + + + + if( wsse_Q20 < bestRateDist_Q20 ) { + bestRateDist_Q20 = wsse_Q20; + bestIndex = s; + } + } + } +#endif + /* Copy best path to output argument */ + SKP_memcpy( NLSFIndices, &pPath_new[ SKP_SMULBB( bestIndex, psNLSF_CB->nStages ) ], psNLSF_CB->nStages * sizeof( SKP_int ) ); + + /* Decode and stabilize the best survivor */ + SKP_Silk_NLSF_MSVQ_decode( pNLSF_Q15, psNLSF_CB, NLSFIndices, LPC_order ); + +} + + diff --git a/libs/silk/src/SKP_Silk_NLSF_VQ_nearest_neighbor_FIX.c b/libs/silk/src/SKP_Silk_NLSF_VQ_nearest_neighbor_FIX.c new file mode 100644 index 0000000000..5f8c48d4a5 --- /dev/null +++ b/libs/silk/src/SKP_Silk_NLSF_VQ_nearest_neighbor_FIX.c @@ -0,0 +1,77 @@ + + +/*********************************************************************** + +Copyright (c) 2006-2010, Skype Limited. All rights reserved. +Redistribution and use in source and binary forms, with or without +modification, (subject to the limitations in the disclaimer below) +are permitted provided that the following conditions are met: +- Redistributions of source code must retain the above copyright notice, +this list of conditions and the following disclaimer. +- Redistributions in binary form must reproduce the above copyright +notice, this list of conditions and the following disclaimer in the +documentation and/or other materials provided with the distribution. +- Neither the name of Skype Limited, nor the names of specific + + + + + +contributors, may be used to endorse or promote products derived from +this software without specific prior written permission. +NO EXPRESS OR IMPLIED LICENSES TO ANY PARTY'S PATENT RIGHTS ARE GRANTED +BY THIS LICENSE.THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND +CONTRIBUTORS ''AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, +BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND +FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE +COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, +INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT +NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF +USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON +ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT +(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE +OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + +***********************************************************************/ + +#include "SKP_Silk_main_FIX.h" + +/* Weighted VQ with entropy constraints, for multiple input data vectors */ +void SKP_Silk_NLSF_VQ_nearest_neighbor_FIX( + SKP_int32 *pRD_Q20, /* O rate-distortion of psNLSF_CB_stage->nVectors best codebook vectors, for each input vector */ + const SKP_Silk_NLSF_CB_Stage_struct *psNLSF_CB_stage,/* I pointer to NLSF codebook stage struct */ + const SKP_int *in_Q15, /* I input vectors to be quantized */ + const SKP_int *w_Q6, /* I weighting vector */ + const SKP_int32 *rate_acc_Q5, /* I Accumulated rate from first to previous stage for each input vector */ + const SKP_int mu_Q15, /* I tradeoffs between weighted error and rate */ + const SKP_int N, /* I number of input vectors to be quantized */ + const SKP_int LPC_order /* I LPC order */ +) +{ + SKP_int i, n; + SKP_int32 *pRD_vec_Q20; + + /* Compute weighted quantization errors for all input vectors over one codebook stage */ + SKP_Silk_NLSF_VQ_sum_error_FIX( pRD_Q20, in_Q15, w_Q6, psNLSF_CB_stage->CB_NLSF_Q15, + N, psNLSF_CB_stage->nVectors, LPC_order ); + + /* Loop over input vectors */ + pRD_vec_Q20 = pRD_Q20; + for( n = 0; n < N; n++ ) { + /* Add rate cost to error for each codebook vector */ + for( i = 0; i < psNLSF_CB_stage->nVectors; i++ ) { + SKP_assert( rate_acc_Q5[ n ] + psNLSF_CB_stage->Rates_Q5[ i ] >= 0 ); + SKP_assert( rate_acc_Q5[ n ] + psNLSF_CB_stage->Rates_Q5[ i ] <= SKP_int16_MAX ); + pRD_vec_Q20[ i ] = SKP_SMLABB( pRD_vec_Q20[ i ], rate_acc_Q5[ n ] + psNLSF_CB_stage->Rates_Q5[ i ], mu_Q15 ); + SKP_assert( pRD_vec_Q20[ i ] >= 0 ); + } + + + + + + pRD_vec_Q20 += psNLSF_CB_stage->nVectors; + } +} + + diff --git a/libs/silk/src/SKP_Silk_NLSF_VQ_sum_error_FIX.c b/libs/silk/src/SKP_Silk_NLSF_VQ_sum_error_FIX.c new file mode 100644 index 0000000000..815b344606 --- /dev/null +++ b/libs/silk/src/SKP_Silk_NLSF_VQ_sum_error_FIX.c @@ -0,0 +1,90 @@ + + +/*********************************************************************** + +Copyright (c) 2006-2010, Skype Limited. All rights reserved. +Redistribution and use in source and binary forms, with or without +modification, (subject to the limitations in the disclaimer below) +are permitted provided that the following conditions are met: +- Redistributions of source code must retain the above copyright notice, +this list of conditions and the following disclaimer. +- Redistributions in binary form must reproduce the above copyright +notice, this list of conditions and the following disclaimer in the +documentation and/or other materials provided with the distribution. +- Neither the name of Skype Limited, nor the names of specific +contributors, may be used to endorse or promote products derived from +this software without specific prior written permission. +NO EXPRESS OR IMPLIED LICENSES TO ANY PARTY'S PATENT RIGHTS ARE GRANTED +BY THIS LICENSE.THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND +CONTRIBUTORS ''AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, +BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND +FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE +COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, +INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT +NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF +USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON +ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT +(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE +OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + +***********************************************************************/ + +#include "SKP_Silk_main_FIX.h" + +/* Compute weighted quantization errors for an LPC_order element input vector, over one codebook stage */ +void SKP_Silk_NLSF_VQ_sum_error_FIX( + SKP_int32 *err_Q20, /* O Weighted quantization errors [N*K] */ + const SKP_int *in_Q15, /* I Input vectors to be quantized [N*LPC_order] */ + const SKP_int *w_Q6, /* I Weighting vectors [N*LPC_order] */ + const SKP_int16 *pCB_Q15, /* I Codebook vectors [K*LPC_order] */ + const SKP_int N, /* I Number of input vectors */ + const SKP_int K, /* I Number of codebook vectors */ + const SKP_int LPC_order /* I Number of LPCs */ + + + + + +) +{ + SKP_int i, n, m; + SKP_int32 diff_Q15, sum_error, Wtmp_Q6; + SKP_int32 Wcpy_Q6[ MAX_LPC_ORDER / 2 ]; + const SKP_int16 *cb_vec_Q15; + + SKP_assert( LPC_order <= 16 ); + SKP_assert( ( LPC_order & 1 ) == 0 ); + + /* Copy to local stack and pack two weights per int32 */ + for( m = 0; m < SKP_RSHIFT( LPC_order, 1 ); m++ ) { + Wcpy_Q6[ m ] = w_Q6[ 2 * m ] | SKP_LSHIFT( (SKP_int32)w_Q6[ 2 * m + 1 ], 16 ); + } + + /* Loop over input vectors */ + for( n = 0; n < N; n++ ) { + /* Loop over codebook */ + cb_vec_Q15 = pCB_Q15; + for( i = 0; i < K; i++ ) { + sum_error = 0; + for( m = 0; m < LPC_order; m += 2 ) { + /* Get two weights packed in an int32 */ + Wtmp_Q6 = Wcpy_Q6[ SKP_RSHIFT( m, 1 ) ]; + + /* Compute weighted squared quantization error for index m */ + diff_Q15 = in_Q15[ m ] - *cb_vec_Q15++; // range: [ -32767 : 32767 ] + sum_error = SKP_SMLAWB( sum_error, SKP_SMULBB( diff_Q15, diff_Q15 ), Wtmp_Q6 ); + + /* Compute weighted squared quantization error for index m + 1 */ + diff_Q15 = in_Q15[m + 1] - *cb_vec_Q15++; // range: [ -32767 : 32767 ] + sum_error = SKP_SMLAWT( sum_error, SKP_SMULBB( diff_Q15, diff_Q15 ), Wtmp_Q6 ); + } + SKP_assert( sum_error >= 0 ); + err_Q20[ i ] = sum_error; + } + err_Q20 += K; + in_Q15 += LPC_order; + } +} + + + diff --git a/libs/silk/src/SKP_Silk_NLSF_VQ_weights_laroia.c b/libs/silk/src/SKP_Silk_NLSF_VQ_weights_laroia.c new file mode 100644 index 0000000000..71dfd45159 --- /dev/null +++ b/libs/silk/src/SKP_Silk_NLSF_VQ_weights_laroia.c @@ -0,0 +1,94 @@ + + +/*********************************************************************** + + + + + + +Copyright (c) 2006-2010, Skype Limited. All rights reserved. +Redistribution and use in source and binary forms, with or without +modification, (subject to the limitations in the disclaimer below) +are permitted provided that the following conditions are met: +- Redistributions of source code must retain the above copyright notice, +this list of conditions and the following disclaimer. +- Redistributions in binary form must reproduce the above copyright +notice, this list of conditions and the following disclaimer in the +documentation and/or other materials provided with the distribution. +- Neither the name of Skype Limited, nor the names of specific +contributors, may be used to endorse or promote products derived from +this software without specific prior written permission. +NO EXPRESS OR IMPLIED LICENSES TO ANY PARTY'S PATENT RIGHTS ARE GRANTED +BY THIS LICENSE.THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND +CONTRIBUTORS ''AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, +BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND +FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE +COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, +INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT +NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF +USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON +ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT +(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE +OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + +***********************************************************************/ + +#include "SKP_Silk_SigProc_FIX.h" + +/* +R. Laroia, N. Phamdo and N. Farvardin, "Robust and Efficient Quantization of Speech LSP +Parameters Using Structured Vector Quantization", Proc. IEEE Int. Conf. Acoust., Speech, +Signal Processing, pp. 641-644, 1991. +*/ + +#define Q_OUT 6 + +/* Laroia low complexity NLSF weights */ +void SKP_Silk_NLSF_VQ_weights_laroia( + SKP_int *pNLSFW_Q6, /* O: Pointer to input vector weights [D x 1] */ + const SKP_int *pNLSF_Q15, /* I: Pointer to input vector [D x 1] */ + const SKP_int D /* I: Input vector dimension (even) */ +) +{ + SKP_int k; + SKP_int32 tmp1_int, tmp2_int; + + /* Check that we are guaranteed to end up within the required range */ + + + + + + SKP_assert( D > 0 ); + SKP_assert( ( D & 1 ) == 0 ); + + /* First value */ + tmp1_int = SKP_max_int( pNLSF_Q15[ 0 ], 1 ); + tmp1_int = SKP_DIV32_16( 1 << ( 15 + Q_OUT ), tmp1_int ); + tmp2_int = SKP_max_int( pNLSF_Q15[ 1 ] - pNLSF_Q15[ 0 ], 1 ); + tmp2_int = SKP_DIV32_16( 1 << ( 15 + Q_OUT ), tmp2_int ); + pNLSFW_Q6[ 0 ] = (SKP_int)SKP_min_int( tmp1_int + tmp2_int, SKP_int16_MAX ); + SKP_assert( pNLSFW_Q6[ 0 ] > 0 ); + + /* Main loop */ + for( k = 1; k < D - 1; k += 2 ) { + tmp1_int = SKP_max_int( pNLSF_Q15[ k + 1 ] - pNLSF_Q15[ k ], 1 ); + tmp1_int = SKP_DIV32_16( 1 << ( 15 + Q_OUT ), tmp1_int ); + pNLSFW_Q6[ k ] = (SKP_int)SKP_min_int( tmp1_int + tmp2_int, SKP_int16_MAX ); + SKP_assert( pNLSFW_Q6[ k ] > 0 ); + + tmp2_int = SKP_max_int( pNLSF_Q15[ k + 2 ] - pNLSF_Q15[ k + 1 ], 1 ); + tmp2_int = SKP_DIV32_16( 1 << ( 15 + Q_OUT ), tmp2_int ); + pNLSFW_Q6[ k + 1 ] = (SKP_int)SKP_min_int( tmp1_int + tmp2_int, SKP_int16_MAX ); + SKP_assert( pNLSFW_Q6[ k + 1 ] > 0 ); + } + + /* Last value */ + tmp1_int = SKP_max_int( ( 1 << 15 ) - pNLSF_Q15[ D - 1 ], 1 ); + tmp1_int = SKP_DIV32_16( 1 << ( 15 + Q_OUT ), tmp1_int ); + pNLSFW_Q6[ D - 1 ] = (SKP_int)SKP_min_int( tmp1_int + tmp2_int, SKP_int16_MAX ); + SKP_assert( pNLSFW_Q6[ D - 1 ] > 0 ); +} + + diff --git a/libs/silk/src/SKP_Silk_NLSF_stabilize.c b/libs/silk/src/SKP_Silk_NLSF_stabilize.c new file mode 100644 index 0000000000..9ef18bb373 --- /dev/null +++ b/libs/silk/src/SKP_Silk_NLSF_stabilize.c @@ -0,0 +1,175 @@ + + +/*********************************************************************** + +Copyright (c) 2006-2010, Skype Limited. All rights reserved. +Redistribution and use in source and binary forms, with or without +modification, (subject to the limitations in the disclaimer below) +are permitted provided that the following conditions are met: +- Redistributions of source code must retain the above copyright notice, +this list of conditions and the following disclaimer. +- Redistributions in binary form must reproduce the above copyright +notice, this list of conditions and the following disclaimer in the +documentation and/or other materials provided with the distribution. +- Neither the name of Skype Limited, nor the names of specific +contributors, may be used to endorse or promote products derived from +this software without specific prior written permission. +NO EXPRESS OR IMPLIED LICENSES TO ANY PARTY'S PATENT RIGHTS ARE GRANTED +BY THIS LICENSE.THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND +CONTRIBUTORS ''AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, +BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND +FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE +COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, +INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT +NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF +USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON +ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT +(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE +OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + +***********************************************************************/ + + + + + + +/* NLSF stabilizer: */ +/* */ +/* - Moves NLSFs futher apart if they are too close */ +/* - Moves NLSFs away from borders if they are too close */ +/* - High effort to achieve a modification with minimum */ +/* Euclidean distance to input vector */ +/* - Output are sorted NLSF coefficients */ +/* */ +#include "SKP_Silk_SigProc_FIX.h" + +/* Constant Definitions */ +#define MAX_LOOPS 20 + +/* NLSF stabilizer, for a single input data vector */ +void SKP_Silk_NLSF_stabilize( + SKP_int *NLSF_Q15, /* I/O: Unstable/stabilized normalized LSF vector in Q15 [L] */ + const SKP_int *NDeltaMin_Q15, /* I: Normalized delta min vector in Q15, NDeltaMin_Q15[L] must be >= 1 [L+1] */ + const SKP_int L /* I: Number of NLSF parameters in the input vector */ +) +{ + SKP_int center_freq_Q15, diff_Q15, min_center_Q15, max_center_Q15; + SKP_int32 min_diff_Q15; + SKP_int loops; + SKP_int i, I=0, k; + + /* This is necessary to ensure an output within range of a SKP_int16 */ + SKP_assert( NDeltaMin_Q15[L] >= 1 ); + + for( loops = 0; loops < MAX_LOOPS; loops++ ) { + /**************************/ + /* Find smallest distance */ + /**************************/ + /* First element */ + min_diff_Q15 = NLSF_Q15[0] - NDeltaMin_Q15[0]; + I = 0; + /* Middle elements */ + for( i = 1; i <= L-1; i++ ) { + diff_Q15 = NLSF_Q15[i] - ( NLSF_Q15[i-1] + NDeltaMin_Q15[i] ); + if( diff_Q15 < min_diff_Q15 ) { + min_diff_Q15 = diff_Q15; + I = i; + } + } + /* Last element */ + diff_Q15 = (1<<15) - ( NLSF_Q15[L-1] + NDeltaMin_Q15[L] ); + if( diff_Q15 < min_diff_Q15 ) { + min_diff_Q15 = diff_Q15; + I = L; + + + + + + } + + /***************************************************/ + /* Now check if the smallest distance non-negative */ + /***************************************************/ + if (min_diff_Q15 >= 0) { + return; + } + + if( I == 0 ) { + /* Move away from lower limit */ + NLSF_Q15[0] = NDeltaMin_Q15[0]; + + } else if( I == L) { + /* Move away from higher limit */ + NLSF_Q15[L-1] = (1<<15) - NDeltaMin_Q15[L]; + + } else { + /* Find the lower extreme for the location of the current center frequency */ + min_center_Q15 = 0; + for( k = 0; k < I; k++ ) { + min_center_Q15 += NDeltaMin_Q15[k]; + } + min_center_Q15 += SKP_RSHIFT( NDeltaMin_Q15[I], 1 ); + + /* Find the upper extreme for the location of the current center frequency */ + max_center_Q15 = (1<<15); + for( k = L; k > I; k-- ) { + max_center_Q15 -= NDeltaMin_Q15[k]; + } + max_center_Q15 -= ( NDeltaMin_Q15[I] - SKP_RSHIFT( NDeltaMin_Q15[I], 1 ) ); + + /* Move apart, sorted by value, keeping the same center frequency */ + center_freq_Q15 = SKP_LIMIT( SKP_RSHIFT_ROUND( (SKP_int32)NLSF_Q15[I-1] + (SKP_int32)NLSF_Q15[I], 1 ), + min_center_Q15, max_center_Q15 ); + NLSF_Q15[I-1] = center_freq_Q15 - SKP_RSHIFT( NDeltaMin_Q15[I], 1 ); + NLSF_Q15[I] = NLSF_Q15[I-1] + NDeltaMin_Q15[I]; + } + } + + /* Safe and simple fall back method, which is less ideal than the above */ + if( loops == MAX_LOOPS ) + { + /* Insertion sort (fast for already almost sorted arrays): */ + /* Best case: O(n) for an already sorted array */ + /* Worst case: O(n^2) for an inversely sorted array */ + SKP_Silk_insertion_sort_increasing_all_values(&NLSF_Q15[0], L); + + + + + + + /* First NLSF should be no less than NDeltaMin[0] */ + NLSF_Q15[0] = SKP_max_int( NLSF_Q15[0], NDeltaMin_Q15[0] ); + + /* Keep delta_min distance between the NLSFs */ + for( i = 1; i < L; i++ ) + NLSF_Q15[i] = SKP_max_int( NLSF_Q15[i], NLSF_Q15[i-1] + NDeltaMin_Q15[i] ); + + /* Last NLSF should be no higher than 1 - NDeltaMin[L] */ + NLSF_Q15[L-1] = SKP_min_int( NLSF_Q15[L-1], (1<<15) - NDeltaMin_Q15[L] ); + + /* Keep NDeltaMin distance between the NLSFs */ + for( i = L-2; i >= 0; i-- ) + NLSF_Q15[i] = SKP_min_int( NLSF_Q15[i], NLSF_Q15[i+1] - NDeltaMin_Q15[i+1] ); + } +} + +/* NLSF stabilizer, over multiple input column data vectors */ +void SKP_Silk_NLSF_stabilize_multi( + SKP_int *NLSF_Q15, /* I/O: Unstable/stabilized normalized LSF vectors in Q15 [LxN] */ + const SKP_int *NDeltaMin_Q15, /* I: Normalized delta min vector in Q15, NDeltaMin_Q15[L] must be >= 1 [L+1] */ + const SKP_int N, /* I: Number of input vectors to be stabilized */ + const SKP_int L /* I: NLSF vector dimension */ +) +{ + SKP_int n; + + /* loop over input data */ + for( n = 0; n < N; n++ ) { + SKP_Silk_NLSF_stabilize( &NLSF_Q15[n * L], NDeltaMin_Q15, L ); + } +} + + diff --git a/libs/silk/src/SKP_Silk_NSQ.c b/libs/silk/src/SKP_Silk_NSQ.c new file mode 100644 index 0000000000..5782e45086 --- /dev/null +++ b/libs/silk/src/SKP_Silk_NSQ.c @@ -0,0 +1,502 @@ + + +/*********************************************************************** + +Copyright (c) 2006-2010, Skype Limited. All rights reserved. +Redistribution and use in source and binary forms, with or without + + + + + +modification, (subject to the limitations in the disclaimer below) +are permitted provided that the following conditions are met: +- Redistributions of source code must retain the above copyright notice, +this list of conditions and the following disclaimer. +- Redistributions in binary form must reproduce the above copyright +notice, this list of conditions and the following disclaimer in the +documentation and/or other materials provided with the distribution. +- Neither the name of Skype Limited, nor the names of specific +contributors, may be used to endorse or promote products derived from +this software without specific prior written permission. +NO EXPRESS OR IMPLIED LICENSES TO ANY PARTY'S PATENT RIGHTS ARE GRANTED +BY THIS LICENSE.THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND +CONTRIBUTORS ''AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, +BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND +FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE +COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, +INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT +NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF +USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON +ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT +(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE +OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + +***********************************************************************/ + +#include "SKP_Silk_main.h" + +SKP_INLINE void SKP_Silk_nsq_scale_states( + SKP_Silk_nsq_state *NSQ, /* I/O NSQ state */ + const SKP_int16 x[], /* I input in Q0 */ + SKP_int32 x_sc_Q10[], /* O input scaled with 1/Gain */ + SKP_int length, /* I length of input */ + SKP_int16 sLTP[], /* I re-whitened LTP state in Q0 */ + SKP_int32 sLTP_Q16[], /* O LTP state matching scaled input */ + SKP_int subfr, /* I subframe number */ + const SKP_int LTP_scale_Q14, /* I */ + const SKP_int32 Gains_Q16[ NB_SUBFR ], /* I */ + const SKP_int pitchL[ NB_SUBFR ] /* I */ +); + +SKP_INLINE void SKP_Silk_noise_shape_quantizer( + SKP_Silk_nsq_state *NSQ, /* I/O NSQ state */ + SKP_int sigtype, /* I Signal type */ + const SKP_int32 x_sc_Q10[], /* I */ + SKP_int q[], /* O */ + SKP_int16 xq[], /* O */ + SKP_int32 sLTP_Q16[], /* I/O LTP state */ + const SKP_int16 a_Q12[], /* I Short term prediction coefs */ + + + + + + const SKP_int16 b_Q14[], /* I Long term prediction coefs */ + const SKP_int16 AR_shp_Q13[], /* I Noise shaping AR coefs */ + SKP_int lag, /* I Pitch lag */ + SKP_int32 HarmShapeFIRPacked_Q14, /* I */ + SKP_int Tilt_Q14, /* I Spectral tilt */ + SKP_int32 LF_shp_Q14, /* I */ + SKP_int32 Gain_Q16, /* I */ + SKP_int Lambda_Q10, /* I */ + SKP_int offset_Q10, /* I */ + SKP_int length, /* I Input length */ + SKP_int shapingLPCOrder, /* I Noise shaping AR filter order */ + SKP_int predictLPCOrder /* I Prediction filter order */ +); + +void SKP_Silk_NSQ( + SKP_Silk_encoder_state *psEncC, /* I/O Encoder State */ + SKP_Silk_encoder_control *psEncCtrlC, /* I Encoder Control */ + SKP_Silk_nsq_state *NSQ, /* I/O NSQ state */ + const SKP_int16 x[], /* I prefiltered input signal */ + SKP_int q[], /* O quantized qulse signal */ + const SKP_int LSFInterpFactor_Q2, /* I LSF interpolation factor in Q2 */ + const SKP_int16 PredCoef_Q12[ 2 * MAX_LPC_ORDER ], /* I Short term prediction coefficients */ + const SKP_int16 LTPCoef_Q14[ LTP_ORDER * NB_SUBFR ], /* I Long term prediction coefficients */ + const SKP_int16 AR2_Q13[ NB_SUBFR * SHAPE_LPC_ORDER_MAX ], /* I */ + const SKP_int HarmShapeGain_Q14[ NB_SUBFR ], /* I */ + const SKP_int Tilt_Q14[ NB_SUBFR ], /* I Spectral tilt */ + const SKP_int32 LF_shp_Q14[ NB_SUBFR ], /* I */ + const SKP_int32 Gains_Q16[ NB_SUBFR ], /* I */ + const SKP_int Lambda_Q10, /* I */ + const SKP_int LTP_scale_Q14 /* I LTP state scaling */ +) +{ + SKP_int k, lag, start_idx, subfr_length, LSF_interpolation_flag; + const SKP_int16 *A_Q12, *B_Q14, *AR_shp_Q13; + SKP_int16 *pxq; + SKP_int32 sLTP_Q16[ 2 * MAX_FRAME_LENGTH ]; + SKP_int16 sLTP[ 2 * MAX_FRAME_LENGTH ]; + SKP_int32 HarmShapeFIRPacked_Q14; + SKP_int offset_Q10; + SKP_int32 FiltState[ MAX_LPC_ORDER ]; + SKP_int32 x_sc_Q10[ MAX_FRAME_LENGTH / NB_SUBFR ]; + + subfr_length = psEncC->frame_length / NB_SUBFR; + + NSQ->rand_seed = psEncCtrlC->Seed; + /* Set unvoiced lag to the previous one, overwrite later for voiced */ + lag = NSQ->lagPrev; + + + + + + + SKP_assert( NSQ->prev_inv_gain_Q16 != 0 ); + + offset_Q10 = SKP_Silk_Quantization_Offsets_Q10[ psEncCtrlC->sigtype ][ psEncCtrlC->QuantOffsetType ]; + + if( LSFInterpFactor_Q2 == ( 1 << 2 ) ) { + LSF_interpolation_flag = 0; + } else { + LSF_interpolation_flag = 1; + } + + /* Setup pointers to start of sub frame */ + NSQ->sLTP_shp_buf_idx = psEncC->frame_length; + NSQ->sLTP_buf_idx = psEncC->frame_length; + pxq = &NSQ->xq[ psEncC->frame_length ]; + for( k = 0; k < NB_SUBFR; k++ ) { + A_Q12 = &PredCoef_Q12[ (( k >> 1 ) | ( 1 - LSF_interpolation_flag )) * MAX_LPC_ORDER ]; + B_Q14 = <PCoef_Q14[ k * LTP_ORDER ]; + AR_shp_Q13 = &AR2_Q13[ k * SHAPE_LPC_ORDER_MAX ]; + + /* Noise shape parameters */ + SKP_assert( HarmShapeGain_Q14[ k ] >= 0 ); + HarmShapeFIRPacked_Q14 = SKP_RSHIFT( HarmShapeGain_Q14[ k ], 2 ); + HarmShapeFIRPacked_Q14 |= SKP_LSHIFT( (SKP_int32)SKP_RSHIFT( HarmShapeGain_Q14[ k ], 1 ), 16 ); + + if( psEncCtrlC->sigtype == SIG_TYPE_VOICED ) { + /* Voiced */ + lag = psEncCtrlC->pitchL[ k ]; + + NSQ->rewhite_flag = 0; + /* Re-whitening */ + if( ( k & ( 3 - SKP_LSHIFT( LSF_interpolation_flag, 1 ) ) ) == 0 ) { + /* Rewhiten with new A coefs */ + + start_idx = psEncC->frame_length - lag - psEncC->predictLPCOrder - LTP_ORDER / 2; + start_idx = SKP_LIMIT( start_idx, 0, psEncC->frame_length - psEncC->predictLPCOrder ); /* Limit */ + + SKP_memset( FiltState, 0, psEncC->predictLPCOrder * sizeof( SKP_int32 ) ); + SKP_Silk_MA_Prediction( &NSQ->xq[ start_idx + k * ( psEncC->frame_length >> 2 ) ], + A_Q12, FiltState, sLTP + start_idx, psEncC->frame_length - start_idx, psEncC->predictLPCOrder ); + + NSQ->rewhite_flag = 1; + NSQ->sLTP_buf_idx = psEncC->frame_length; + } + } + + SKP_Silk_nsq_scale_states( NSQ, x, x_sc_Q10, psEncC->subfr_length, sLTP, + sLTP_Q16, k, LTP_scale_Q14, Gains_Q16, psEncCtrlC->pitchL ); + + + + + + + SKP_Silk_noise_shape_quantizer( NSQ, psEncCtrlC->sigtype, x_sc_Q10, q, pxq, sLTP_Q16, A_Q12, B_Q14, + AR_shp_Q13, lag, HarmShapeFIRPacked_Q14, Tilt_Q14[ k ], LF_shp_Q14[ k ], Gains_Q16[ k ], Lambda_Q10, + offset_Q10, psEncC->subfr_length, psEncC->shapingLPCOrder, psEncC->predictLPCOrder + ); + + x += psEncC->subfr_length; + q += psEncC->subfr_length; + pxq += psEncC->subfr_length; + } + + /* Save scalars for this layer */ + NSQ->sLF_AR_shp_Q12 = NSQ->sLF_AR_shp_Q12; + NSQ->prev_inv_gain_Q16 = NSQ->prev_inv_gain_Q16; + NSQ->lagPrev = psEncCtrlC->pitchL[ NB_SUBFR - 1 ]; + /* Save quantized speech and noise shaping signals */ + SKP_memcpy( NSQ->xq, &NSQ->xq[ psEncC->frame_length ], psEncC->frame_length * sizeof( SKP_int16 ) ); + SKP_memcpy( NSQ->sLTP_shp_Q10, &NSQ->sLTP_shp_Q10[ psEncC->frame_length ], psEncC->frame_length * sizeof( SKP_int32 ) ); + +} + +/***********************************/ +/* SKP_Silk_noise_shape_quantizer */ +/***********************************/ +SKP_INLINE void SKP_Silk_noise_shape_quantizer( + SKP_Silk_nsq_state *NSQ, /* I/O NSQ state */ + SKP_int sigtype, /* I Signal type */ + const SKP_int32 x_sc_Q10[], /* I */ + SKP_int q[], /* O */ + SKP_int16 xq[], /* O */ + SKP_int32 sLTP_Q16[], /* I/O LTP state */ + const SKP_int16 a_Q12[], /* I Short term prediction coefs */ + const SKP_int16 b_Q14[], /* I Long term prediction coefs */ + const SKP_int16 AR_shp_Q13[], /* I Noise shaping AR coefs */ + SKP_int lag, /* I Pitch lag */ + SKP_int32 HarmShapeFIRPacked_Q14, /* I */ + SKP_int Tilt_Q14, /* I Spectral tilt */ + SKP_int32 LF_shp_Q14, /* I */ + SKP_int32 Gain_Q16, /* I */ + SKP_int Lambda_Q10, /* I */ + SKP_int offset_Q10, /* I */ + SKP_int length, /* I Input length */ + SKP_int shapingLPCOrder, /* I Noise shaping AR filter order */ + SKP_int predictLPCOrder /* I Prediction filter order */ +) +{ + SKP_int i, j; + SKP_int32 LTP_pred_Q14, LPC_pred_Q10, n_AR_Q10, n_LTP_Q14; + SKP_int32 n_LF_Q10, r_Q10, q_Q0, q_Q10; + + + + + + SKP_int32 thr1_Q10, thr2_Q10, thr3_Q10; + SKP_int32 Atmp, dither; + SKP_int32 exc_Q10, LPC_exc_Q10, xq_Q10; + SKP_int32 tmp, sLF_AR_shp_Q10; + SKP_int32 *psLPC_Q14; + SKP_int32 *shp_lag_ptr, *pred_lag_ptr; + SKP_int32 a_Q12_tmp[ MAX_LPC_ORDER / 2 ], AR_shp_Q13_tmp[ MAX_LPC_ORDER / 2 ]; + + shp_lag_ptr = &NSQ->sLTP_shp_Q10[ NSQ->sLTP_shp_buf_idx - lag + HARM_SHAPE_FIR_TAPS / 2 ]; + pred_lag_ptr = &sLTP_Q16[ NSQ->sLTP_buf_idx - lag + LTP_ORDER / 2 ]; + + /* Setup short term AR state */ + psLPC_Q14 = &NSQ->sLPC_Q14[ MAX_LPC_ORDER - 1 ]; + + /* Quantization thresholds */ + thr1_Q10 = SKP_SUB_RSHIFT32( -1536, Lambda_Q10, 1); + thr2_Q10 = SKP_SUB_RSHIFT32( -512, Lambda_Q10, 1); + thr2_Q10 = SKP_ADD_RSHIFT32( thr2_Q10, SKP_SMULBB( offset_Q10, Lambda_Q10 ), 10 ); + thr3_Q10 = SKP_ADD_RSHIFT32( 512, Lambda_Q10, 1); + + /* Preload LPC coeficients to array on stack. Gives small performance gain */ + SKP_memcpy( a_Q12_tmp, a_Q12, predictLPCOrder * sizeof(SKP_int16) ); + SKP_memcpy( AR_shp_Q13_tmp, AR_shp_Q13, shapingLPCOrder * sizeof(SKP_int16) ); + + for( i = 0; i < length; i++ ) { + /* Generate dither */ + NSQ->rand_seed = SKP_RAND( NSQ->rand_seed ); + + /* dither = rand_seed < 0 ? 0xFFFFFFFF : 0; */ + dither = SKP_RSHIFT( NSQ->rand_seed, 31 ); + + /* Short-term prediction */ + SKP_assert( ( predictLPCOrder & 1 ) == 0 ); /* check that order is even */ + SKP_assert( ( (SKP_int64)a_Q12 & 3 ) == 0 ); /* check that array starts at 4-byte aligned address */ + SKP_assert( predictLPCOrder >= 10 ); /* check that unrolling works */ + + /* NOTE: the code below loads two int16 values in an int32, and multiplies each using the */ + /* SMLAWB and SMLAWT instructions. On a big-endian CPU the two int16 variables would be */ + /* loaded in reverse order and the code will give the wrong result. In that case swapping */ + /* the SMLAWB and SMLAWT instructions should solve the problem. */ + /* Partially unrolled */ + Atmp = a_Q12_tmp[ 0 ]; /* read two coefficients at once */ + LPC_pred_Q10 = SKP_SMULWB( psLPC_Q14[ 0 ], Atmp ); + LPC_pred_Q10 = SKP_SMLAWT( LPC_pred_Q10, psLPC_Q14[ -1 ], Atmp ); + Atmp = a_Q12_tmp[ 1 ]; + LPC_pred_Q10 = SKP_SMLAWB( LPC_pred_Q10, psLPC_Q14[ -2 ], Atmp ); + LPC_pred_Q10 = SKP_SMLAWT( LPC_pred_Q10, psLPC_Q14[ -3 ], Atmp ); + Atmp = a_Q12_tmp[ 2 ]; + + + + + + LPC_pred_Q10 = SKP_SMLAWB( LPC_pred_Q10, psLPC_Q14[ -4 ], Atmp ); + LPC_pred_Q10 = SKP_SMLAWT( LPC_pred_Q10, psLPC_Q14[ -5 ], Atmp ); + Atmp = a_Q12_tmp[ 3 ]; + LPC_pred_Q10 = SKP_SMLAWB( LPC_pred_Q10, psLPC_Q14[ -6 ], Atmp ); + LPC_pred_Q10 = SKP_SMLAWT( LPC_pred_Q10, psLPC_Q14[ -7 ], Atmp ); + Atmp = a_Q12_tmp[ 4 ]; + LPC_pred_Q10 = SKP_SMLAWB( LPC_pred_Q10, psLPC_Q14[ -8 ], Atmp ); + LPC_pred_Q10 = SKP_SMLAWT( LPC_pred_Q10, psLPC_Q14[ -9 ], Atmp ); + for( j = 10; j < predictLPCOrder; j += 2 ) { + Atmp = a_Q12_tmp[ j >> 1 ]; /* read two coefficients at once */ + LPC_pred_Q10 = SKP_SMLAWB( LPC_pred_Q10, psLPC_Q14[ -j ], Atmp ); + LPC_pred_Q10 = SKP_SMLAWT( LPC_pred_Q10, psLPC_Q14[ -j - 1 ], Atmp ); + } + + /* Long-term prediction */ + if( sigtype == SIG_TYPE_VOICED ) { + /* Unrolled loop */ + LTP_pred_Q14 = SKP_SMULWB( pred_lag_ptr[ 0 ], b_Q14[ 0 ] ); + LTP_pred_Q14 = SKP_SMLAWB( LTP_pred_Q14, pred_lag_ptr[ -1 ], b_Q14[ 1 ] ); + LTP_pred_Q14 = SKP_SMLAWB( LTP_pred_Q14, pred_lag_ptr[ -2 ], b_Q14[ 2 ] ); + LTP_pred_Q14 = SKP_SMLAWB( LTP_pred_Q14, pred_lag_ptr[ -3 ], b_Q14[ 3 ] ); + LTP_pred_Q14 = SKP_SMLAWB( LTP_pred_Q14, pred_lag_ptr[ -4 ], b_Q14[ 4 ] ); + pred_lag_ptr++; + } else { + LTP_pred_Q14 = 0; + } + + /* Noise shape feedback */ + SKP_assert( ( shapingLPCOrder & 1 ) == 0 ); /* check that order is even */ + SKP_assert( ( (SKP_int64)AR_shp_Q13 & 3 ) == 0 ); /* check that array starts at 4-byte aligned address */ + SKP_assert( shapingLPCOrder >= 12 ); /* check that unrolling works */ + + /* Partially unrolled */ + Atmp = AR_shp_Q13_tmp[ 0 ]; /* read two coefficients at once */ + n_AR_Q10 = SKP_SMULWB( psLPC_Q14[ 0 ], Atmp ); + n_AR_Q10 = SKP_SMLAWT( n_AR_Q10, psLPC_Q14[ -1 ], Atmp ); + Atmp = AR_shp_Q13_tmp[ 1 ]; + n_AR_Q10 = SKP_SMLAWB( n_AR_Q10, psLPC_Q14[ -2 ], Atmp ); + n_AR_Q10 = SKP_SMLAWT( n_AR_Q10, psLPC_Q14[ -3 ], Atmp ); + Atmp = AR_shp_Q13_tmp[ 2 ]; + n_AR_Q10 = SKP_SMLAWB( n_AR_Q10, psLPC_Q14[ -4 ], Atmp ); + n_AR_Q10 = SKP_SMLAWT( n_AR_Q10, psLPC_Q14[ -5 ], Atmp ); + Atmp = AR_shp_Q13_tmp[ 3 ]; + n_AR_Q10 = SKP_SMLAWB( n_AR_Q10, psLPC_Q14[ -6 ], Atmp ); + n_AR_Q10 = SKP_SMLAWT( n_AR_Q10, psLPC_Q14[ -7 ], Atmp ); + Atmp = AR_shp_Q13_tmp[ 4 ]; + n_AR_Q10 = SKP_SMLAWB( n_AR_Q10, psLPC_Q14[ -8 ], Atmp ); + n_AR_Q10 = SKP_SMLAWT( n_AR_Q10, psLPC_Q14[ -9 ], Atmp ); + + + + + + Atmp = AR_shp_Q13_tmp[ 5 ]; + n_AR_Q10 = SKP_SMLAWB( n_AR_Q10, psLPC_Q14[ -10 ], Atmp ); + n_AR_Q10 = SKP_SMLAWT( n_AR_Q10, psLPC_Q14[ -11 ], Atmp ); + for( j = 12; j < shapingLPCOrder; j += 2 ) { + Atmp = AR_shp_Q13_tmp[ j >> 1 ]; /* read two coefficients at once */ + n_AR_Q10 = SKP_SMLAWB( n_AR_Q10, psLPC_Q14[ -j ], Atmp ); + n_AR_Q10 = SKP_SMLAWT( n_AR_Q10, psLPC_Q14[ -j - 1 ], Atmp ); + } + n_AR_Q10 = SKP_RSHIFT( n_AR_Q10, 1 ); /* Q11 -> Q10 */ + n_AR_Q10 = SKP_SMLAWB( n_AR_Q10, NSQ->sLF_AR_shp_Q12, Tilt_Q14 ); + + n_LF_Q10 = SKP_LSHIFT( SKP_SMULWB( NSQ->sLTP_shp_Q10[ NSQ->sLTP_shp_buf_idx - 1 ], LF_shp_Q14 ), 2 ); + n_LF_Q10 = SKP_SMLAWT( n_LF_Q10, NSQ->sLF_AR_shp_Q12, LF_shp_Q14 ); + + SKP_assert( lag > 0 || sigtype == SIG_TYPE_UNVOICED); + + /* Long-term shaping */ + if( lag > 0 ) { + /* Symmetric, packed FIR coefficients */ + n_LTP_Q14 = SKP_SMULWB( SKP_ADD32( shp_lag_ptr[ 0 ], shp_lag_ptr[ -2 ] ), HarmShapeFIRPacked_Q14 ); + n_LTP_Q14 = SKP_SMLAWT( n_LTP_Q14, shp_lag_ptr[ -1 ], HarmShapeFIRPacked_Q14 ); + shp_lag_ptr++; + n_LTP_Q14 = SKP_LSHIFT( n_LTP_Q14, 6 ); + } else { + n_LTP_Q14 = 0; + } + + /* Input minus prediction plus noise feedback */ + //r = x[ i ] - LTP_pred - LPC_pred + n_AR + n_Tilt + n_LF + n_LTP; + tmp = SKP_SUB32( LTP_pred_Q14, n_LTP_Q14 ); /* Add Q14 stuff */ + tmp = SKP_RSHIFT_ROUND( tmp, 4 ); /* round to Q10 */ + tmp = SKP_ADD32( tmp, LPC_pred_Q10 ); /* add Q10 stuff */ + tmp = SKP_SUB32( tmp, n_AR_Q10 ); /* subtract Q10 stuff */ + tmp = SKP_SUB32( tmp, n_LF_Q10 ); /* subtract Q10 stuff */ + r_Q10 = SKP_SUB32( x_sc_Q10[ i ], tmp ); + + + /* Flip sign depending on dither */ + r_Q10 = ( r_Q10 ^ dither ) - dither; + r_Q10 = SKP_SUB32( r_Q10, offset_Q10 ); + r_Q10 = SKP_LIMIT( r_Q10, -64 << 10, 64 << 10 ); + + /* Quantize */ + if( r_Q10 < thr1_Q10 ) { + q_Q0 = SKP_RSHIFT_ROUND( SKP_ADD_RSHIFT32( r_Q10, Lambda_Q10, 1 ), 10 ); + q_Q10 = SKP_LSHIFT( q_Q0, 10 ); + } else if( r_Q10 < thr2_Q10 ) { + q_Q0 = -1; + + + + + + q_Q10 = -1024; + } else if( r_Q10 > thr3_Q10 ) { + q_Q0 = SKP_RSHIFT_ROUND( SKP_SUB_RSHIFT32( r_Q10, Lambda_Q10, 1 ), 10 ); + q_Q10 = SKP_LSHIFT( q_Q0, 10 ); + } else { + q_Q0 = 0; + q_Q10 = 0; + } + q[ i ] = q_Q0; + + /* Excitation */ + exc_Q10 = SKP_ADD32( q_Q10, offset_Q10 ); + exc_Q10 = ( exc_Q10 ^ dither ) - dither; + + /* Add predictions */ + LPC_exc_Q10 = SKP_ADD32( exc_Q10, SKP_RSHIFT_ROUND( LTP_pred_Q14, 4 ) ); + xq_Q10 = SKP_ADD32( LPC_exc_Q10, LPC_pred_Q10 ); + + /* Scale XQ back to normal level before saving */ + xq[ i ] = (SKP_int16)SKP_SAT16( SKP_RSHIFT_ROUND( SKP_SMULWW( xq_Q10, Gain_Q16 ), 10 ) ); + + + /* Update states */ + psLPC_Q14++; + *psLPC_Q14 = SKP_LSHIFT( xq_Q10, 4 ); + sLF_AR_shp_Q10 = SKP_SUB32( xq_Q10, n_AR_Q10 ); + NSQ->sLF_AR_shp_Q12 = SKP_LSHIFT( sLF_AR_shp_Q10, 2 ); + + NSQ->sLTP_shp_Q10[ NSQ->sLTP_shp_buf_idx ] = SKP_SUB32( sLF_AR_shp_Q10, n_LF_Q10 ); + sLTP_Q16[NSQ->sLTP_buf_idx] = SKP_LSHIFT( LPC_exc_Q10, 6 ); + NSQ->sLTP_shp_buf_idx++; + NSQ->sLTP_buf_idx++; + + /* Make dither dependent on quantized signal */ + NSQ->rand_seed += q[ i ]; + } + /* Update LPC synth buffer */ + SKP_memcpy( NSQ->sLPC_Q14, &NSQ->sLPC_Q14[ length ], MAX_LPC_ORDER * sizeof( SKP_int32 ) ); +} + +SKP_INLINE void SKP_Silk_nsq_scale_states( + SKP_Silk_nsq_state *NSQ, /* I/O NSQ state */ + const SKP_int16 x[], /* I input in Q0 */ + SKP_int32 x_sc_Q10[], /* O input scaled with 1/Gain */ + SKP_int length, /* I length of input */ + SKP_int16 sLTP[], /* I re-whitened LTP state in Q0 */ + SKP_int32 sLTP_Q16[], /* O LTP state matching scaled input */ + SKP_int subfr, /* I subframe number */ + + + + + + const SKP_int LTP_scale_Q14, /* I */ + const SKP_int32 Gains_Q16[ NB_SUBFR ], /* I */ + const SKP_int pitchL[ NB_SUBFR ] /* I */ +) +{ + SKP_int i, scale_length, lag; + SKP_int32 inv_gain_Q16, gain_adj_Q16, inv_gain_Q32; + + inv_gain_Q16 = SKP_DIV32( SKP_int32_MAX, SKP_RSHIFT( Gains_Q16[ subfr ], 1) ); + inv_gain_Q16 = SKP_min( inv_gain_Q16, SKP_int16_MAX ); + lag = pitchL[ subfr ]; + + /* After rewhitening the LTP state is un-scaled */ + if( NSQ->rewhite_flag ) { + inv_gain_Q32 = SKP_LSHIFT( inv_gain_Q16, 16 ); + if( subfr == 0 ) { + /* Do LTP downscaling */ + inv_gain_Q32 = SKP_LSHIFT( SKP_SMULWB( inv_gain_Q32, LTP_scale_Q14 ), 2 ); + } + for( i = NSQ->sLTP_buf_idx - lag - LTP_ORDER / 2; i < NSQ->sLTP_buf_idx; i++ ) { + sLTP_Q16[ i ] = SKP_SMULWB( inv_gain_Q32, sLTP[ i ] ); + } + } + + /* Prepare for Worst case. Next frame starts with max lag voiced */ + scale_length = length * NB_SUBFR; /* approx max lag */ + scale_length = scale_length - SKP_SMULBB( NB_SUBFR - (subfr + 1), length ); /* subtract samples that will be too old in next frame */ + scale_length = SKP_max_int( scale_length, lag + LTP_ORDER ); /* make sure to scale whole pitch period if voiced */ + + /* Adjust for changing gain */ + if( inv_gain_Q16 != NSQ->prev_inv_gain_Q16 ) { + gain_adj_Q16 = SKP_DIV32_varQ( inv_gain_Q16, NSQ->prev_inv_gain_Q16, 16 ); + + for( i = NSQ->sLTP_shp_buf_idx - scale_length; i < NSQ->sLTP_shp_buf_idx; i++ ) { + NSQ->sLTP_shp_Q10[ i ] = SKP_SMULWW( gain_adj_Q16, NSQ->sLTP_shp_Q10[ i ] ); + } + + /* Scale LTP predict state */ + if( NSQ->rewhite_flag == 0 ) { + for( i = NSQ->sLTP_buf_idx - lag - LTP_ORDER / 2; i < NSQ->sLTP_buf_idx; i++ ) { + sLTP_Q16[ i ] = SKP_SMULWW( gain_adj_Q16, sLTP_Q16[ i ] ); + } + } + NSQ->sLF_AR_shp_Q12 = SKP_SMULWW( gain_adj_Q16, NSQ->sLF_AR_shp_Q12 ); + + /* scale short term state */ + for( i = 0; i < MAX_LPC_ORDER; i++ ) { + NSQ->sLPC_Q14[ i ] = SKP_SMULWW( gain_adj_Q16, NSQ->sLPC_Q14[ i ] ); + + + + + + } + } + + /* Scale input */ + for( i = 0; i < length; i++ ) { + x_sc_Q10[ i ] = SKP_RSHIFT( SKP_SMULBB( x[ i ], (SKP_int16)inv_gain_Q16 ), 6 ); + } + + /* save inv_gain */ + SKP_assert( inv_gain_Q16 != 0 ); + NSQ->prev_inv_gain_Q16 = inv_gain_Q16; +} + + diff --git a/libs/silk/src/SKP_Silk_NSQ_del_dec.c b/libs/silk/src/SKP_Silk_NSQ_del_dec.c new file mode 100644 index 0000000000..d78ffdd66c --- /dev/null +++ b/libs/silk/src/SKP_Silk_NSQ_del_dec.c @@ -0,0 +1,803 @@ + + +/*********************************************************************** + +Copyright (c) 2006-2010, Skype Limited. All rights reserved. +Redistribution and use in source and binary forms, with or without +modification, (subject to the limitations in the disclaimer below) +are permitted provided that the following conditions are met: +- Redistributions of source code must retain the above copyright notice, +this list of conditions and the following disclaimer. +- Redistributions in binary form must reproduce the above copyright +notice, this list of conditions and the following disclaimer in the +documentation and/or other materials provided with the distribution. +- Neither the name of Skype Limited, nor the names of specific +contributors, may be used to endorse or promote products derived from +this software without specific prior written permission. +NO EXPRESS OR IMPLIED LICENSES TO ANY PARTY'S PATENT RIGHTS ARE GRANTED +BY THIS LICENSE.THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND +CONTRIBUTORS ''AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, +BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND +FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE +COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, +INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT +NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF +USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON +ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT +(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE +OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + +***********************************************************************/ + +#include "SKP_Silk_main.h" + + + + + + +typedef struct { + SKP_int RandState[ DECISION_DELAY ]; + SKP_int32 Q_Q10[ DECISION_DELAY ]; + SKP_int32 Xq_Q10[ DECISION_DELAY ]; + SKP_int32 Pred_Q16[ DECISION_DELAY ]; + SKP_int32 Shape_Q10[ DECISION_DELAY ]; + SKP_int32 Gain_Q16[ DECISION_DELAY ]; + SKP_int32 sLPC_Q14[ MAX_FRAME_LENGTH / NB_SUBFR + NSQ_LPC_BUF_LENGTH ]; + SKP_int32 LF_AR_Q12; + SKP_int32 Seed; + SKP_int32 SeedInit; + SKP_int32 RD_Q10; +} NSQ_del_dec_struct; + +typedef struct { + SKP_int32 Q_Q10; + SKP_int32 RD_Q10; + SKP_int32 xq_Q14; + SKP_int32 LF_AR_Q12; + SKP_int32 sLTP_shp_Q10; + SKP_int32 LPC_exc_Q16; +} NSQ_sample_struct; + +SKP_INLINE void SKP_Silk_copy_del_dec_state( + NSQ_del_dec_struct *DD_dst, /* I Dst del dec state */ + NSQ_del_dec_struct *DD_src, /* I Src del dec state */ + SKP_int LPC_state_idx /* I Index to LPC buffer */ +); + +SKP_INLINE void SKP_Silk_nsq_del_dec_scale_states( + SKP_Silk_nsq_state *NSQ, /* I/O NSQ state */ + NSQ_del_dec_struct psDelDec[], /* I/O Delayed decision states */ + const SKP_int16 x[], /* I Input in Q0 */ + SKP_int32 x_sc_Q10[], /* O Input scaled with 1/Gain in Q10 */ + SKP_int length, /* I Length of input */ + SKP_int16 sLTP[], /* I Re-whitened LTP state in Q0 */ + SKP_int32 sLTP_Q16[], /* O LTP state matching scaled input */ + SKP_int subfr, /* I Subframe number */ + SKP_int nStatesDelayedDecision, /* I Number of del dec states */ + SKP_int smpl_buf_idx, /* I Index to newest samples in buffers */ + const SKP_int LTP_scale_Q14, /* I LTP state scaling */ + const SKP_int32 Gains_Q16[ NB_SUBFR ], /* I */ + const SKP_int pitchL[ NB_SUBFR ] /* I Pitch lag */ +); + +/******************************************/ +/* Noise shape quantizer for one subframe */ +/******************************************/ + + + + + +SKP_INLINE void SKP_Silk_noise_shape_quantizer_del_dec( + SKP_Silk_nsq_state *NSQ, /* I/O NSQ state */ + NSQ_del_dec_struct psDelDec[], /* I/O Delayed decision states */ + SKP_int sigtype, /* I Signal type */ + const SKP_int32 x_Q10[], /* I */ + SKP_int q[], /* O */ + SKP_int16 xq[], /* O */ + SKP_int32 sLTP_Q16[], /* I/O LTP filter state */ + const SKP_int16 a_Q12[], /* I Short term prediction coefs */ + const SKP_int16 b_Q14[], /* I Long term prediction coefs */ + const SKP_int16 AR_shp_Q13[], /* I Noise shaping coefs */ + SKP_int lag, /* I Pitch lag */ + SKP_int32 HarmShapeFIRPacked_Q14, /* I */ + SKP_int Tilt_Q14, /* I Spectral tilt */ + SKP_int32 LF_shp_Q14, /* I */ + SKP_int32 Gain_Q16, /* I */ + SKP_int Lambda_Q10, /* I */ + SKP_int offset_Q10, /* I */ + SKP_int length, /* I Input length */ + SKP_int subfr, /* I Subframe number */ + SKP_int shapingLPCOrder, /* I Shaping LPC filter order */ + SKP_int predictLPCOrder, /* I Prediction LPC filter order */ + SKP_int nStatesDelayedDecision, /* I Number of states in decision tree */ + SKP_int *smpl_buf_idx, /* I Index to newest samples in buffers */ + SKP_int decisionDelay /* I */ +); + +void SKP_Silk_NSQ_del_dec( + SKP_Silk_encoder_state *psEncC, /* I/O Encoder State */ + SKP_Silk_encoder_control *psEncCtrlC, /* I Encoder Control */ + SKP_Silk_nsq_state *NSQ, /* I/O NSQ state */ + const SKP_int16 x[], /* I Prefiltered input signal */ + SKP_int q[], /* O Quantized pulse signal */ + const SKP_int LSFInterpFactor_Q2, /* I LSF interpolation factor in Q2 */ + const SKP_int16 PredCoef_Q12[ 2 * MAX_LPC_ORDER ], /* I Prediction coefs */ + const SKP_int16 LTPCoef_Q14[ LTP_ORDER * NB_SUBFR ], /* I LT prediction coefs */ + const SKP_int16 AR2_Q13[ NB_SUBFR * SHAPE_LPC_ORDER_MAX ], /* I */ + const SKP_int HarmShapeGain_Q14[ NB_SUBFR ], /* I */ + const SKP_int Tilt_Q14[ NB_SUBFR ], /* I Spectral tilt */ + const SKP_int32 LF_shp_Q14[ NB_SUBFR ], /* I */ + const SKP_int32 Gains_Q16[ NB_SUBFR ], /* I */ + const SKP_int Lambda_Q10, /* I */ + const SKP_int LTP_scale_Q14 /* I LTP state scaling */ +) +{ + SKP_int i, k, lag, start_idx, LSF_interpolation_flag, Winner_ind, subfr; + SKP_int last_smple_idx, smpl_buf_idx, decisionDelay, subfr_length; + const SKP_int16 *A_Q12, *B_Q14, *AR_shp_Q13; + + + + + + SKP_int16 *pxq; + SKP_int32 sLTP_Q16[ 2 * MAX_FRAME_LENGTH ]; + SKP_int16 sLTP[ 2 * MAX_FRAME_LENGTH ]; + SKP_int32 HarmShapeFIRPacked_Q14; + SKP_int offset_Q10; + SKP_int32 FiltState[ MAX_LPC_ORDER ], RDmin_Q10; + SKP_int32 x_sc_Q10[ MAX_FRAME_LENGTH / NB_SUBFR ]; + NSQ_del_dec_struct psDelDec[ DEL_DEC_STATES_MAX ]; + NSQ_del_dec_struct *psDD; + + subfr_length = psEncC->frame_length / NB_SUBFR; + + /* Set unvoiced lag to the previous one, overwrite later for voiced */ + lag = NSQ->lagPrev; + + SKP_assert( NSQ->prev_inv_gain_Q16 != 0 ); + + /* Initialize delayed decision states */ + SKP_memset( psDelDec, 0, psEncC->nStatesDelayedDecision * sizeof( NSQ_del_dec_struct ) ); + for( k = 0; k < psEncC->nStatesDelayedDecision; k++ ) { + psDD = &psDelDec[ k ]; + psDD->Seed = ( k + psEncCtrlC->Seed ) & 3; + psDD->SeedInit = psDD->Seed; + psDD->RD_Q10 = 0; + psDD->LF_AR_Q12 = NSQ->sLF_AR_shp_Q12; + psDD->Shape_Q10[ 0 ] = NSQ->sLTP_shp_Q10[ psEncC->frame_length - 1 ]; + SKP_memcpy( psDD->sLPC_Q14, NSQ->sLPC_Q14, NSQ_LPC_BUF_LENGTH * sizeof( SKP_int32 ) ); + } + + offset_Q10 = SKP_Silk_Quantization_Offsets_Q10[ psEncCtrlC->sigtype ][ psEncCtrlC->QuantOffsetType ]; + smpl_buf_idx = 0; /* index of oldest samples */ + + decisionDelay = SKP_min_int( DECISION_DELAY, subfr_length ); + /* For voiced frames limit the decision delay to lower than the pitch lag */ + if( psEncCtrlC->sigtype == SIG_TYPE_VOICED ) { + for( k = 0; k < NB_SUBFR; k++ ) { + decisionDelay = SKP_min_int( decisionDelay, psEncCtrlC->pitchL[ k ] - LTP_ORDER / 2 - 1 ); + } + } + + if( LSFInterpFactor_Q2 == ( 1 << 2 ) ) { + LSF_interpolation_flag = 0; + } else { + LSF_interpolation_flag = 1; + } + + /* Setup pointers to start of sub frame */ + pxq = &NSQ->xq[ psEncC->frame_length ]; + + + + + + NSQ->sLTP_shp_buf_idx = psEncC->frame_length; + NSQ->sLTP_buf_idx = psEncC->frame_length; + subfr = 0; + for( k = 0; k < NB_SUBFR; k++ ) { + A_Q12 = &PredCoef_Q12[ ( ( k >> 1 ) | ( 1 - LSF_interpolation_flag ) ) * MAX_LPC_ORDER ]; + B_Q14 = <PCoef_Q14[ k * LTP_ORDER ]; + AR_shp_Q13 = &AR2_Q13[ k * SHAPE_LPC_ORDER_MAX ]; + + NSQ->rewhite_flag = 0; + if( psEncCtrlC->sigtype == SIG_TYPE_VOICED ) { + /* Voiced */ + lag = psEncCtrlC->pitchL[ k ]; + + /* Re-whitening */ + if( ( k & ( 3 - SKP_LSHIFT( LSF_interpolation_flag, 1 ) ) ) == 0 ) { + if( k == 2 ) { + /* RESET DELAYED DECISIONS */ + /* Find winner */ + RDmin_Q10 = psDelDec[ 0 ].RD_Q10; + Winner_ind = 0; + for( i = 1; i < psEncC->nStatesDelayedDecision; i++ ) { + if( psDelDec[ i ].RD_Q10 < RDmin_Q10 ) { + RDmin_Q10 = psDelDec[ i ].RD_Q10; + Winner_ind = i; + } + } + for( i = 0; i < psEncC->nStatesDelayedDecision; i++ ) { + if( i != Winner_ind ) { + psDelDec[ i ].RD_Q10 += ( SKP_int32_MAX >> 4 ); + SKP_assert( psDelDec[ i ].RD_Q10 >= 0 ); + } + } + + /* Copy final part of signals from winner state to output and long-term filter states */ + psDD = &psDelDec[ Winner_ind ]; + last_smple_idx = smpl_buf_idx + decisionDelay; + for( i = 0; i < decisionDelay; i++ ) { + last_smple_idx = ( last_smple_idx - 1 ) & DECISION_DELAY_MASK; + q[ i - decisionDelay ] = (SKP_int)SKP_RSHIFT( psDD->Q_Q10[ last_smple_idx ], 10 ); + pxq[ i - decisionDelay ] = (SKP_int16)SKP_SAT16( SKP_RSHIFT_ROUND( + SKP_SMULWW( psDD->Xq_Q10[ last_smple_idx ], + psDD->Gain_Q16[ last_smple_idx ] ), 10 ) ); + NSQ->sLTP_shp_Q10[ NSQ->sLTP_shp_buf_idx - decisionDelay + i ] = psDD->Shape_Q10[ last_smple_idx ]; + } + + subfr = 0; + } + + + + + + + /* Rewhiten with new A coefs */ + start_idx = psEncC->frame_length - lag - psEncC->predictLPCOrder - LTP_ORDER / 2; + start_idx = SKP_LIMIT( start_idx, 0, psEncC->frame_length - psEncC->predictLPCOrder ); + + SKP_memset( FiltState, 0, psEncC->predictLPCOrder * sizeof( SKP_int32 ) ); + SKP_Silk_MA_Prediction( &NSQ->xq[ start_idx + k * psEncC->subfr_length ], + A_Q12, FiltState, sLTP + start_idx, psEncC->frame_length - start_idx, psEncC->predictLPCOrder ); + + NSQ->sLTP_buf_idx = psEncC->frame_length; + NSQ->rewhite_flag = 1; + } + } + + /* Noise shape parameters */ + SKP_assert( HarmShapeGain_Q14[ k ] >= 0 ); + HarmShapeFIRPacked_Q14 = SKP_RSHIFT( HarmShapeGain_Q14[ k ], 2 ); + HarmShapeFIRPacked_Q14 |= SKP_LSHIFT( (SKP_int32)SKP_RSHIFT( HarmShapeGain_Q14[ k ], 1 ), 16 ); + + SKP_Silk_nsq_del_dec_scale_states( NSQ, psDelDec, x, x_sc_Q10, + subfr_length, sLTP, sLTP_Q16, k, psEncC->nStatesDelayedDecision, smpl_buf_idx, + LTP_scale_Q14, Gains_Q16, psEncCtrlC->pitchL ); + + SKP_Silk_noise_shape_quantizer_del_dec( NSQ, psDelDec, psEncCtrlC->sigtype, x_sc_Q10, q, pxq, sLTP_Q16, + A_Q12, B_Q14, AR_shp_Q13, lag, HarmShapeFIRPacked_Q14, Tilt_Q14[ k ], LF_shp_Q14[ k ], Gains_Q16[ k ], + Lambda_Q10, offset_Q10, psEncC->subfr_length, subfr++, psEncC->shapingLPCOrder, psEncC->predictLPCOrder, + psEncC->nStatesDelayedDecision, &smpl_buf_idx, decisionDelay + ); + + x += psEncC->subfr_length; + q += psEncC->subfr_length; + pxq += psEncC->subfr_length; + } + + /* Find winner */ + RDmin_Q10 = psDelDec[ 0 ].RD_Q10; + Winner_ind = 0; + for( k = 1; k < psEncC->nStatesDelayedDecision; k++ ) { + if( psDelDec[ k ].RD_Q10 < RDmin_Q10 ) { + RDmin_Q10 = psDelDec[ k ].RD_Q10; + Winner_ind = k; + } + } + + /* Copy final part of signals from winner state to output and long-term filter states */ + psDD = &psDelDec[ Winner_ind ]; + psEncCtrlC->Seed = psDD->SeedInit; + last_smple_idx = smpl_buf_idx + decisionDelay; + for( i = 0; i < decisionDelay; i++ ) { + + + + + + last_smple_idx = ( last_smple_idx - 1 ) & DECISION_DELAY_MASK; + q[ i - decisionDelay ] = (SKP_int)SKP_RSHIFT( psDD->Q_Q10[ last_smple_idx ], 10 ); + pxq[ i - decisionDelay ] = (SKP_int16)SKP_SAT16( SKP_RSHIFT_ROUND( + SKP_SMULWW( psDD->Xq_Q10[ last_smple_idx ], psDD->Gain_Q16[ last_smple_idx ] ), 10 ) ); + NSQ->sLTP_shp_Q10[ NSQ->sLTP_shp_buf_idx - decisionDelay + i ] = psDD->Shape_Q10[ last_smple_idx ]; + sLTP_Q16[ NSQ->sLTP_buf_idx - decisionDelay + i ] = psDD->Pred_Q16[ last_smple_idx ]; + + } + SKP_memcpy( NSQ->sLPC_Q14, &psDD->sLPC_Q14[ psEncC->subfr_length ], NSQ_LPC_BUF_LENGTH * sizeof( SKP_int32 ) ); + + /* Update states */ + NSQ->sLF_AR_shp_Q12 = psDD->LF_AR_Q12; + NSQ->prev_inv_gain_Q16 = NSQ->prev_inv_gain_Q16; + NSQ->lagPrev = psEncCtrlC->pitchL[ NB_SUBFR - 1 ]; + + /* Save quantized speech and noise shaping signals */ + SKP_memcpy( NSQ->xq, &NSQ->xq[ psEncC->frame_length ], psEncC->frame_length * sizeof( SKP_int16 ) ); + SKP_memcpy( NSQ->sLTP_shp_Q10, &NSQ->sLTP_shp_Q10[ psEncC->frame_length ], psEncC->frame_length * sizeof( SKP_int32 ) ); + +} + +/******************************************/ +/* Noise shape quantizer for one subframe */ +/******************************************/ +SKP_INLINE void SKP_Silk_noise_shape_quantizer_del_dec( + SKP_Silk_nsq_state *NSQ, /* I/O NSQ state */ + NSQ_del_dec_struct psDelDec[], /* I/O Delayed decision states */ + SKP_int sigtype, /* I Signal type */ + const SKP_int32 x_Q10[], /* I */ + SKP_int q[], /* O */ + SKP_int16 xq[], /* O */ + SKP_int32 sLTP_Q16[], /* I/O LTP filter state */ + const SKP_int16 a_Q12[], /* I Short term prediction coefs */ + const SKP_int16 b_Q14[], /* I Long term prediction coefs */ + const SKP_int16 AR_shp_Q13[], /* I Noise shaping coefs */ + SKP_int lag, /* I Pitch lag */ + SKP_int32 HarmShapeFIRPacked_Q14, /* I */ + SKP_int Tilt_Q14, /* I Spectral tilt */ + SKP_int32 LF_shp_Q14, /* I */ + SKP_int32 Gain_Q16, /* I */ + SKP_int Lambda_Q10, /* I */ + SKP_int offset_Q10, /* I */ + SKP_int length, /* I Input length */ + SKP_int subfr, /* I Subframe number */ + SKP_int shapingLPCOrder, /* I Shaping LPC filter order */ + SKP_int predictLPCOrder, /* I Prediction LPC filter order */ + SKP_int nStatesDelayedDecision, /* I Number of states in decision tree */ + SKP_int *smpl_buf_idx, /* I Index to newest samples in buffers */ + + + + + + SKP_int decisionDelay /* I */ +) +{ + SKP_int i, j, k, Winner_ind, RDmin_ind, RDmax_ind, last_smple_idx; + SKP_int32 Winner_rand_state; + SKP_int32 LTP_pred_Q14, LPC_pred_Q10, n_AR_Q10, n_LTP_Q14; + SKP_int32 n_LF_Q10; + SKP_int32 r_Q10, rr_Q20, rd1_Q10, rd2_Q10, RDmin_Q10, RDmax_Q10; + SKP_int32 q1_Q10, q2_Q10; + SKP_int32 Atmp, dither; + SKP_int32 exc_Q10, LPC_exc_Q10, xq_Q10; + SKP_int32 tmp, sLF_AR_shp_Q10; + SKP_int32 *pred_lag_ptr, *shp_lag_ptr; + SKP_int32 *psLPC_Q14; + SKP_int32 a_Q12_tmp[ MAX_LPC_ORDER / 2 ], AR_shp_Q13_tmp[ MAX_LPC_ORDER / 2 ]; + NSQ_sample_struct psSampleState[ DEL_DEC_STATES_MAX ][ 2 ]; + NSQ_del_dec_struct *psDD; + NSQ_sample_struct *psSS; + + shp_lag_ptr = &NSQ->sLTP_shp_Q10[ NSQ->sLTP_shp_buf_idx - lag + HARM_SHAPE_FIR_TAPS / 2 ]; + pred_lag_ptr = &sLTP_Q16[ NSQ->sLTP_buf_idx - lag + LTP_ORDER / 2 ]; + + /* Preload LPC coeficients to array on stack. Gives small performance gain */ + SKP_memcpy( a_Q12_tmp, a_Q12, predictLPCOrder * sizeof(SKP_int16) ); + SKP_memcpy( AR_shp_Q13_tmp, AR_shp_Q13, shapingLPCOrder * sizeof(SKP_int16) ); + + for( i = 0; i < length; i++ ) { + /* Perform common calculations used in all states */ + + /* Long-term prediction */ + if( sigtype == SIG_TYPE_VOICED ) { + /* Unrolled loop */ + LTP_pred_Q14 = SKP_SMULWB( pred_lag_ptr[ 0 ], b_Q14[ 0 ] ); + LTP_pred_Q14 = SKP_SMLAWB( LTP_pred_Q14, pred_lag_ptr[ -1 ], b_Q14[ 1 ] ); + LTP_pred_Q14 = SKP_SMLAWB( LTP_pred_Q14, pred_lag_ptr[ -2 ], b_Q14[ 2 ] ); + LTP_pred_Q14 = SKP_SMLAWB( LTP_pred_Q14, pred_lag_ptr[ -3 ], b_Q14[ 3 ] ); + LTP_pred_Q14 = SKP_SMLAWB( LTP_pred_Q14, pred_lag_ptr[ -4 ], b_Q14[ 4 ] ); + pred_lag_ptr++; + } else { + LTP_pred_Q14 = 0; + } + + /* Long-term shaping */ + if( lag > 0 ) { + /* Symmetric, packed FIR coefficients */ + n_LTP_Q14 = SKP_SMULWB( SKP_ADD32( shp_lag_ptr[ 0 ], shp_lag_ptr[ -2 ] ), HarmShapeFIRPacked_Q14 ); + n_LTP_Q14 = SKP_SMLAWT( n_LTP_Q14, shp_lag_ptr[ -1 ], HarmShapeFIRPacked_Q14 ); + n_LTP_Q14 = SKP_LSHIFT( n_LTP_Q14, 6 ); + + + + + + shp_lag_ptr++; + } else { + n_LTP_Q14 = 0; + } + + for( k = 0; k < nStatesDelayedDecision; k++ ) { + /* Delayed decision state */ + psDD = &psDelDec[ k ]; + + /* Sample state */ + psSS = psSampleState[ k ]; + + /* Generate dither */ + psDD->Seed = SKP_RAND( psDD->Seed ); + + /* dither = rand_seed < 0 ? 0xFFFFFFFF : 0; */ + dither = SKP_RSHIFT( psDD->Seed, 31 ); + + /* Pointer used in short term prediction and shaping */ + psLPC_Q14 = &psDD->sLPC_Q14[ NSQ_LPC_BUF_LENGTH - 1 + i ]; + /* Short-term prediction */ + SKP_assert( ( predictLPCOrder & 1 ) == 0 ); /* check that order is even */ + SKP_assert( ( (SKP_int64)a_Q12 & 3 ) == 0 ); /* check that array starts at 4-byte aligned address */ + SKP_assert( predictLPCOrder >= 10 ); /* check that unrolling works */ + + /* Partially unrolled */ + Atmp = a_Q12_tmp[ 0 ]; /* read two coefficients at once */ + LPC_pred_Q10 = SKP_SMULWB( psLPC_Q14[ 0 ], Atmp ); + LPC_pred_Q10 = SKP_SMLAWT( LPC_pred_Q10, psLPC_Q14[ -1 ], Atmp ); + Atmp = a_Q12_tmp[ 1 ]; + LPC_pred_Q10 = SKP_SMLAWB( LPC_pred_Q10, psLPC_Q14[ -2 ], Atmp ); + LPC_pred_Q10 = SKP_SMLAWT( LPC_pred_Q10, psLPC_Q14[ -3 ], Atmp ); + Atmp = a_Q12_tmp[ 2 ]; + LPC_pred_Q10 = SKP_SMLAWB( LPC_pred_Q10, psLPC_Q14[ -4 ], Atmp ); + LPC_pred_Q10 = SKP_SMLAWT( LPC_pred_Q10, psLPC_Q14[ -5 ], Atmp ); + Atmp = a_Q12_tmp[ 3 ]; + LPC_pred_Q10 = SKP_SMLAWB( LPC_pred_Q10, psLPC_Q14[ -6 ], Atmp ); + LPC_pred_Q10 = SKP_SMLAWT( LPC_pred_Q10, psLPC_Q14[ -7 ], Atmp ); + Atmp = a_Q12_tmp[ 4 ]; + LPC_pred_Q10 = SKP_SMLAWB( LPC_pred_Q10, psLPC_Q14[ -8 ], Atmp ); + LPC_pred_Q10 = SKP_SMLAWT( LPC_pred_Q10, psLPC_Q14[ -9 ], Atmp ); + for( j = 10; j < predictLPCOrder; j += 2 ) { + Atmp = a_Q12_tmp[ j >> 1 ]; /* read two coefficients at once */ + LPC_pred_Q10 = SKP_SMLAWB( LPC_pred_Q10, psLPC_Q14[ -j ], Atmp ); + LPC_pred_Q10 = SKP_SMLAWT( LPC_pred_Q10, psLPC_Q14[ -j - 1 ], Atmp ); + } + + /* Noise shape feedback */ + + + + + + SKP_assert( ( shapingLPCOrder & 1 ) == 0 ); /* check that order is even */ + SKP_assert( ( (SKP_int64)AR_shp_Q13 & 3 ) == 0 ); /* check that array starts at 4-byte aligned address */ + SKP_assert( shapingLPCOrder >= 12 ); /* check that unrolling works */ + /* NOTE: the code below loads two int16 values in an int32, and multiplies each using the */ + /* SMLAWB and SMLAWT instructions. On a big-endian CPU the two int16 variables would be */ + /* loaded in reverse order and the code will give the wrong result. In that case swapping */ + /* the SMLAWB and SMLAWT instructions should solve the problem. */ + + /* Partially unrolled */ + Atmp = AR_shp_Q13_tmp[ 0 ]; /* read two coefficients at once */ + n_AR_Q10 = SKP_SMULWB( psLPC_Q14[ 0 ], Atmp ); + n_AR_Q10 = SKP_SMLAWT( n_AR_Q10, psLPC_Q14[ -1 ], Atmp ); + Atmp = AR_shp_Q13_tmp[ 1 ]; + n_AR_Q10 = SKP_SMLAWB( n_AR_Q10, psLPC_Q14[ -2 ], Atmp ); + n_AR_Q10 = SKP_SMLAWT( n_AR_Q10, psLPC_Q14[ -3 ], Atmp ); + Atmp = AR_shp_Q13_tmp[ 2 ]; + n_AR_Q10 = SKP_SMLAWB( n_AR_Q10, psLPC_Q14[ -4 ], Atmp ); + n_AR_Q10 = SKP_SMLAWT( n_AR_Q10, psLPC_Q14[ -5 ], Atmp ); + Atmp = AR_shp_Q13_tmp[ 3 ]; + n_AR_Q10 = SKP_SMLAWB( n_AR_Q10, psLPC_Q14[ -6 ], Atmp ); + n_AR_Q10 = SKP_SMLAWT( n_AR_Q10, psLPC_Q14[ -7 ], Atmp ); + Atmp = AR_shp_Q13_tmp[ 4 ]; + n_AR_Q10 = SKP_SMLAWB( n_AR_Q10, psLPC_Q14[ -8 ], Atmp ); + n_AR_Q10 = SKP_SMLAWT( n_AR_Q10, psLPC_Q14[ -9 ], Atmp ); + Atmp = AR_shp_Q13_tmp[ 5 ]; + n_AR_Q10 = SKP_SMLAWB( n_AR_Q10, psLPC_Q14[ -10 ], Atmp ); + n_AR_Q10 = SKP_SMLAWT( n_AR_Q10, psLPC_Q14[ -11 ], Atmp ); + for( j = 12; j < shapingLPCOrder; j += 2 ) { + Atmp = AR_shp_Q13_tmp[ j >> 1 ]; /* read two coefficients at once */ + n_AR_Q10 = SKP_SMLAWB( n_AR_Q10, psLPC_Q14[ -j ], Atmp ); + n_AR_Q10 = SKP_SMLAWT( n_AR_Q10, psLPC_Q14[ -j - 1 ], Atmp ); + } + n_AR_Q10 = SKP_RSHIFT( n_AR_Q10, 1 ); /* Q11 -> Q10 */ + n_AR_Q10 = SKP_SMLAWB( n_AR_Q10, psDD->LF_AR_Q12, Tilt_Q14 ); + + n_LF_Q10 = SKP_LSHIFT( SKP_SMULWB( psDD->Shape_Q10[ *smpl_buf_idx ], LF_shp_Q14 ), 2 ); + n_LF_Q10 = SKP_SMLAWT( n_LF_Q10, psDD->LF_AR_Q12, LF_shp_Q14 ); + + /* Input minus prediction plus noise feedback */ + /* r = x[ i ] - LTP_pred - LPC_pred + n_AR + n_Tilt + n_LF + n_LTP */ + tmp = SKP_SUB32( LTP_pred_Q14, n_LTP_Q14 ); /* Add Q14 stuff */ + tmp = SKP_RSHIFT_ROUND( tmp, 4 ); /* round to Q10 */ + tmp = SKP_ADD32( tmp, LPC_pred_Q10 ); /* add Q10 stuff */ + tmp = SKP_SUB32( tmp, n_AR_Q10 ); /* subtract Q10 stuff */ + tmp = SKP_SUB32( tmp, n_LF_Q10 ); /* subtract Q10 stuff */ + r_Q10 = SKP_SUB32( x_Q10[ i ], tmp ); /* residual error Q10 */ + + + + + + + + /* Flip sign depending on dither */ + r_Q10 = ( r_Q10 ^ dither ) - dither; + r_Q10 = SKP_SUB32( r_Q10, offset_Q10 ); + r_Q10 = SKP_LIMIT( r_Q10, -64 << 10, 64 << 10 ); + + /* Find two quantization level candidates and measure their rate-distortion */ + if( r_Q10 < -1536 ) { + q1_Q10 = SKP_LSHIFT( SKP_RSHIFT_ROUND( r_Q10, 10 ), 10 ); + r_Q10 = SKP_SUB32( r_Q10, q1_Q10 ); + rd1_Q10 = SKP_RSHIFT( SKP_SMLABB( SKP_MUL( -SKP_ADD32( q1_Q10, offset_Q10 ), Lambda_Q10 ), r_Q10, r_Q10 ), 10 ); + rd2_Q10 = SKP_ADD32( rd1_Q10, 1024 ); + rd2_Q10 = SKP_SUB32( rd2_Q10, SKP_ADD_LSHIFT32( Lambda_Q10, r_Q10, 1 ) ); + q2_Q10 = SKP_ADD32( q1_Q10, 1024 ); + } else if( r_Q10 > 512 ) { + q1_Q10 = SKP_LSHIFT( SKP_RSHIFT_ROUND( r_Q10, 10 ), 10 ); + r_Q10 = SKP_SUB32( r_Q10, q1_Q10 ); + rd1_Q10 = SKP_RSHIFT( SKP_SMLABB( SKP_MUL( SKP_ADD32( q1_Q10, offset_Q10 ), Lambda_Q10 ), r_Q10, r_Q10 ), 10 ); + rd2_Q10 = SKP_ADD32( rd1_Q10, 1024 ); + rd2_Q10 = SKP_SUB32( rd2_Q10, SKP_SUB_LSHIFT32( Lambda_Q10, r_Q10, 1 ) ); + q2_Q10 = SKP_SUB32( q1_Q10, 1024 ); + } else { /* r_Q10 >= -1536 && q1_Q10 <= 512 */ + rr_Q20 = SKP_SMULBB( offset_Q10, Lambda_Q10 ); + rd2_Q10 = SKP_RSHIFT( SKP_SMLABB( rr_Q20, r_Q10, r_Q10 ), 10 ); + rd1_Q10 = SKP_ADD32( rd2_Q10, 1024 ); + rd1_Q10 = SKP_ADD32( rd1_Q10, SKP_SUB_RSHIFT32( SKP_ADD_LSHIFT32( Lambda_Q10, r_Q10, 1 ), rr_Q20, 9 ) ); + q1_Q10 = -1024; + q2_Q10 = 0; + } + + if( rd1_Q10 < rd2_Q10 ) { + psSS[ 0 ].RD_Q10 = SKP_ADD32( psDD->RD_Q10, rd1_Q10 ); + psSS[ 1 ].RD_Q10 = SKP_ADD32( psDD->RD_Q10, rd2_Q10 ); + psSS[ 0 ].Q_Q10 = q1_Q10; + psSS[ 1 ].Q_Q10 = q2_Q10; + } else { + psSS[ 0 ].RD_Q10 = SKP_ADD32( psDD->RD_Q10, rd2_Q10 ); + psSS[ 1 ].RD_Q10 = SKP_ADD32( psDD->RD_Q10, rd1_Q10 ); + psSS[ 0 ].Q_Q10 = q2_Q10; + psSS[ 1 ].Q_Q10 = q1_Q10; + } + + /* Update states for best quantization */ + + /* Quantized excitation */ + exc_Q10 = SKP_ADD32( offset_Q10, psSS[ 0 ].Q_Q10 ); + exc_Q10 = ( exc_Q10 ^ dither ) - dither; + + /* Add predictions */ + + + + + + LPC_exc_Q10 = exc_Q10 + SKP_RSHIFT_ROUND( LTP_pred_Q14, 4 ); + xq_Q10 = SKP_ADD32( LPC_exc_Q10, LPC_pred_Q10 ); + + /* Update states */ + sLF_AR_shp_Q10 = SKP_SUB32( xq_Q10, n_AR_Q10 ); + psSS[ 0 ].sLTP_shp_Q10 = SKP_SUB32( sLF_AR_shp_Q10, n_LF_Q10 ); + psSS[ 0 ].LF_AR_Q12 = SKP_LSHIFT( sLF_AR_shp_Q10, 2 ); + psSS[ 0 ].xq_Q14 = SKP_LSHIFT( xq_Q10, 4 ); + psSS[ 0 ].LPC_exc_Q16 = SKP_LSHIFT( LPC_exc_Q10, 6 ); + + /* Update states for second best quantization */ + + /* Quantized excitation */ + exc_Q10 = SKP_ADD32( offset_Q10, psSS[ 1 ].Q_Q10 ); + exc_Q10 = ( exc_Q10 ^ dither ) - dither; + + /* Add predictions */ + LPC_exc_Q10 = exc_Q10 + SKP_RSHIFT_ROUND( LTP_pred_Q14, 4 ); + xq_Q10 = SKP_ADD32( LPC_exc_Q10, LPC_pred_Q10 ); + + /* Update states */ + sLF_AR_shp_Q10 = SKP_SUB32( xq_Q10, n_AR_Q10 ); + psSS[ 1 ].sLTP_shp_Q10 = SKP_SUB32( sLF_AR_shp_Q10, n_LF_Q10 ); + psSS[ 1 ].LF_AR_Q12 = SKP_LSHIFT( sLF_AR_shp_Q10, 2 ); + psSS[ 1 ].xq_Q14 = SKP_LSHIFT( xq_Q10, 4 ); + psSS[ 1 ].LPC_exc_Q16 = SKP_LSHIFT( LPC_exc_Q10, 6 ); + } + + *smpl_buf_idx = ( *smpl_buf_idx - 1 ) & DECISION_DELAY_MASK; /* Index to newest samples */ + last_smple_idx = ( *smpl_buf_idx + decisionDelay ) & DECISION_DELAY_MASK; /* Index to decisionDelay old samples */ + + /* Find winner */ + RDmin_Q10 = psSampleState[ 0 ][ 0 ].RD_Q10; + Winner_ind = 0; + for( k = 1; k < nStatesDelayedDecision; k++ ) { + if( psSampleState[ k ][ 0 ].RD_Q10 < RDmin_Q10 ) { + RDmin_Q10 = psSampleState[ k ][ 0 ].RD_Q10; + Winner_ind = k; + } + } + + /* Increase RD values of expired states */ + Winner_rand_state = psDelDec[ Winner_ind ].RandState[ last_smple_idx ]; + for( k = 0; k < nStatesDelayedDecision; k++ ) { + if( psDelDec[ k ].RandState[ last_smple_idx ] != Winner_rand_state ) { + psSampleState[ k ][ 0 ].RD_Q10 = SKP_ADD32( psSampleState[ k ][ 0 ].RD_Q10, ( SKP_int32_MAX >> 4 ) ); + psSampleState[ k ][ 1 ].RD_Q10 = SKP_ADD32( psSampleState[ k ][ 1 ].RD_Q10, ( SKP_int32_MAX >> 4 ) ); + SKP_assert( psSampleState[ k ][ 0 ].RD_Q10 >= 0 ); + + + + + + } + } + + /* Find worst in first set and best in second set */ + RDmax_Q10 = psSampleState[ 0 ][ 0 ].RD_Q10; + RDmin_Q10 = psSampleState[ 0 ][ 1 ].RD_Q10; + RDmax_ind = 0; + RDmin_ind = 0; + for( k = 1; k < nStatesDelayedDecision; k++ ) { + /* find worst in first set */ + if( psSampleState[ k ][ 0 ].RD_Q10 > RDmax_Q10 ) { + RDmax_Q10 = psSampleState[ k ][ 0 ].RD_Q10; + RDmax_ind = k; + } + /* find best in second set */ + if( psSampleState[ k ][ 1 ].RD_Q10 < RDmin_Q10 ) { + RDmin_Q10 = psSampleState[ k ][ 1 ].RD_Q10; + RDmin_ind = k; + } + } + + /* Replace a state if best from second set outperforms worst in first set */ + if( RDmin_Q10 < RDmax_Q10 ) { + SKP_Silk_copy_del_dec_state( &psDelDec[ RDmax_ind ], &psDelDec[ RDmin_ind ], i ); + SKP_memcpy( &psSampleState[ RDmax_ind ][ 0 ], &psSampleState[ RDmin_ind ][ 1 ], sizeof( NSQ_sample_struct ) ); + } + + /* Write samples from winner to output and long-term filter states */ + psDD = &psDelDec[ Winner_ind ]; + if( subfr > 0 || i >= decisionDelay ) { + q[ i - decisionDelay ] = (SKP_int)SKP_RSHIFT( psDD->Q_Q10[ last_smple_idx ], 10 ); + xq[ i - decisionDelay ] = (SKP_int16)SKP_SAT16( SKP_RSHIFT_ROUND( + SKP_SMULWW( psDD->Xq_Q10[ last_smple_idx ], psDD->Gain_Q16[ last_smple_idx ] ), 10 ) ); + NSQ->sLTP_shp_Q10[ NSQ->sLTP_shp_buf_idx - decisionDelay ] = psDD->Shape_Q10[ last_smple_idx ]; + sLTP_Q16[ NSQ->sLTP_buf_idx - decisionDelay ] = psDD->Pred_Q16[ last_smple_idx ]; + } + NSQ->sLTP_shp_buf_idx++; + NSQ->sLTP_buf_idx++; + + /* Update states */ + for( k = 0; k < nStatesDelayedDecision; k++ ) { + psDD = &psDelDec[ k ]; + psSS = &psSampleState[ k ][ 0 ]; + psDD->LF_AR_Q12 = psSS->LF_AR_Q12; + psDD->sLPC_Q14[ NSQ_LPC_BUF_LENGTH + i ] = psSS->xq_Q14; + psDD->Xq_Q10[ *smpl_buf_idx ] = SKP_RSHIFT( psSS->xq_Q14, 4 ); + psDD->Q_Q10[ *smpl_buf_idx ] = psSS->Q_Q10; + psDD->Pred_Q16[ *smpl_buf_idx ] = psSS->LPC_exc_Q16; + + + + + + psDD->Shape_Q10[ *smpl_buf_idx ] = psSS->sLTP_shp_Q10; + psDD->Seed = SKP_ADD_RSHIFT32( psDD->Seed, psSS->Q_Q10, 10 ); + psDD->RandState[ *smpl_buf_idx ] = psDD->Seed; + psDD->RD_Q10 = psSS->RD_Q10; + psDD->Gain_Q16[ *smpl_buf_idx ] = Gain_Q16; + } + } + /* Update LPC states */ + for( k = 0; k < nStatesDelayedDecision; k++ ) { + psDD = &psDelDec[ k ]; + SKP_memcpy( psDD->sLPC_Q14, &psDD->sLPC_Q14[ length ], NSQ_LPC_BUF_LENGTH * sizeof( SKP_int32 ) ); + } +} + +SKP_INLINE void SKP_Silk_nsq_del_dec_scale_states( + SKP_Silk_nsq_state *NSQ, /* I/O NSQ state */ + NSQ_del_dec_struct psDelDec[], /* I/O Delayed decision states */ + const SKP_int16 x[], /* I Input in Q0 */ + SKP_int32 x_sc_Q10[], /* O Input scaled with 1/Gain in Q10 */ + SKP_int length, /* I Length of input */ + SKP_int16 sLTP[], /* I Re-whitened LTP state in Q0 */ + SKP_int32 sLTP_Q16[], /* O LTP state matching scaled input */ + SKP_int subfr, /* I Subframe number */ + SKP_int nStatesDelayedDecision, /* I Number of del dec states */ + SKP_int smpl_buf_idx, /* I Index to newest samples in buffers */ + const SKP_int LTP_scale_Q14, /* I LTP state scaling */ + const SKP_int32 Gains_Q16[ NB_SUBFR ], /* I */ + const SKP_int pitchL[ NB_SUBFR ] /* I Pitch lag */ +) +{ + SKP_int i, k, scale_length, lag; + SKP_int32 inv_gain_Q16, gain_adj_Q16, inv_gain_Q32; + NSQ_del_dec_struct *psDD; + + inv_gain_Q16 = SKP_DIV32( SKP_int32_MAX, SKP_RSHIFT( Gains_Q16[ subfr ], 1 ) ); + inv_gain_Q16 = SKP_min( inv_gain_Q16, SKP_int16_MAX ); + lag = pitchL[ subfr ]; + /* After rewhitening the LTP state is un-scaled. So scale with inv_gain_Q16 */ + if( NSQ->rewhite_flag ) { + inv_gain_Q32 = SKP_LSHIFT( inv_gain_Q16, 16 ); + if( subfr == 0 ) { + /* Do LTP downscaling */ + inv_gain_Q32 = SKP_LSHIFT( SKP_SMULWB( inv_gain_Q32, LTP_scale_Q14 ), 2 ); + } + for( i = NSQ->sLTP_buf_idx - lag - LTP_ORDER / 2; i < NSQ->sLTP_buf_idx; i++ ) { + SKP_assert( i < MAX_FRAME_LENGTH ); + sLTP_Q16[ i ] = SKP_SMULWB( inv_gain_Q32, sLTP[ i ] ); + } + + + + + + } + + /* Adjust for changing gain */ + if( inv_gain_Q16 != NSQ->prev_inv_gain_Q16 ) { + gain_adj_Q16 = SKP_DIV32_varQ( inv_gain_Q16, NSQ->prev_inv_gain_Q16, 16 ); + + for( k = 0; k < nStatesDelayedDecision; k++ ) { + psDD = &psDelDec[ k ]; + + /* Scale scalar states */ + psDD->LF_AR_Q12 = SKP_SMULWW( gain_adj_Q16, psDD->LF_AR_Q12 ); + + /* scale short term state */ + for( i = 0; i < NSQ_LPC_BUF_LENGTH; i++ ) { + psDD->sLPC_Q14[ NSQ_LPC_BUF_LENGTH - i - 1 ] = SKP_SMULWW( gain_adj_Q16, psDD->sLPC_Q14[ NSQ_LPC_BUF_LENGTH - i - 1 ] ); + } + for( i = 0; i < DECISION_DELAY; i++ ) { + psDD->Pred_Q16[ i ] = SKP_SMULWW( gain_adj_Q16, psDD->Pred_Q16[ i ] ); + psDD->Shape_Q10[ i ] = SKP_SMULWW( gain_adj_Q16, psDD->Shape_Q10[ i ] ); + } + } + + /* Scale long term shaping state */ + + /* Calculate length to be scaled, Worst case: Next frame is voiced with max lag */ + scale_length = length * NB_SUBFR; /* aprox max lag */ + scale_length = scale_length - SKP_SMULBB( NB_SUBFR - ( subfr + 1 ), length ); /* subtract samples that will be too old in next frame */ + scale_length = SKP_max_int( scale_length, lag + LTP_ORDER ); /* make sure to scale whole pitch period if voiced */ + + for( i = NSQ->sLTP_shp_buf_idx - scale_length; i < NSQ->sLTP_shp_buf_idx; i++ ) { + NSQ->sLTP_shp_Q10[ i ] = SKP_SMULWW( gain_adj_Q16, NSQ->sLTP_shp_Q10[ i ] ); + } + + /* Scale LTP predict state */ + if( NSQ->rewhite_flag == 0 ) { + for( i = NSQ->sLTP_buf_idx - lag - LTP_ORDER / 2; i < NSQ->sLTP_buf_idx; i++ ) { + sLTP_Q16[ i ] = SKP_SMULWW( gain_adj_Q16, sLTP_Q16[ i ] ); + } + } + } + + /* Scale input */ + for( i = 0; i < length; i++ ) { + x_sc_Q10[ i ] = SKP_RSHIFT( SKP_SMULBB( x[ i ], (SKP_int16)inv_gain_Q16 ), 6 ); + } + + /* save inv_gain */ + SKP_assert( inv_gain_Q16 != 0 ); + + + + + + NSQ->prev_inv_gain_Q16 = inv_gain_Q16; +} + +SKP_INLINE void SKP_Silk_copy_del_dec_state( + NSQ_del_dec_struct *DD_dst, /* I Dst del dec state */ + NSQ_del_dec_struct *DD_src, /* I Src del dec state */ + SKP_int LPC_state_idx /* I Index to LPC buffer */ +) +{ + SKP_memcpy( DD_dst->RandState, DD_src->RandState, DECISION_DELAY * sizeof( SKP_int ) ); + SKP_memcpy( DD_dst->Q_Q10, DD_src->Q_Q10, DECISION_DELAY * sizeof( SKP_int32 ) ); + SKP_memcpy( DD_dst->Pred_Q16, DD_src->Pred_Q16, DECISION_DELAY * sizeof( SKP_int32 ) ); + SKP_memcpy( DD_dst->Shape_Q10, DD_src->Shape_Q10, DECISION_DELAY * sizeof( SKP_int32 ) ); + SKP_memcpy( DD_dst->Xq_Q10, DD_src->Xq_Q10, DECISION_DELAY * sizeof( SKP_int32 ) ); + + SKP_memcpy( &DD_dst->sLPC_Q14[ LPC_state_idx ], &DD_src->sLPC_Q14[ LPC_state_idx ], NSQ_LPC_BUF_LENGTH * sizeof( SKP_int32 ) ); + DD_dst->LF_AR_Q12 = DD_src->LF_AR_Q12; + DD_dst->Seed = DD_src->Seed; + DD_dst->SeedInit = DD_src->SeedInit; + DD_dst->RD_Q10 = DD_src->RD_Q10; +} + + diff --git a/libs/silk/src/SKP_Silk_PLC.c b/libs/silk/src/SKP_Silk_PLC.c new file mode 100644 index 0000000000..8446bd30ee --- /dev/null +++ b/libs/silk/src/SKP_Silk_PLC.c @@ -0,0 +1,435 @@ + + +/*********************************************************************** + +Copyright (c) 2006-2010, Skype Limited. All rights reserved. +Redistribution and use in source and binary forms, with or without +modification, (subject to the limitations in the disclaimer below) +are permitted provided that the following conditions are met: +- Redistributions of source code must retain the above copyright notice, +this list of conditions and the following disclaimer. +- Redistributions in binary form must reproduce the above copyright +notice, this list of conditions and the following disclaimer in the +documentation and/or other materials provided with the distribution. +- Neither the name of Skype Limited, nor the names of specific +contributors, may be used to endorse or promote products derived from +this software without specific prior written permission. +NO EXPRESS OR IMPLIED LICENSES TO ANY PARTY'S PATENT RIGHTS ARE GRANTED +BY THIS LICENSE.THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND +CONTRIBUTORS ''AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, +BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND +FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE +COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, +INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT +NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF +USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON +ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT +(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE +OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + +***********************************************************************/ + +#include "SKP_Silk_main.h" +#include "SKP_Silk_PLC.h" + +#define NB_ATT 2 +static const SKP_int16 HARM_ATT_Q15[NB_ATT] = { 32440, 31130 }; /* 0.99, 0.95 */ +static const SKP_int16 PLC_RAND_ATTENUATE_V_Q15[NB_ATT] = { 31130, 26214 }; /* 0.95, 0.8 */ +static const SKP_int16 PLC_RAND_ATTENUATE_UV_Q15[NB_ATT] = { 32440, 29491 }; /* 0.99, 0.9 */ + +void SKP_Silk_PLC_Reset( + SKP_Silk_decoder_state *psDec /* I/O Decoder state */ +) +{ + psDec->sPLC.pitchL_Q8 = SKP_RSHIFT( psDec->frame_length, 1 ); +} + +void SKP_Silk_PLC( + + + + + + SKP_Silk_decoder_state *psDec, /* I Decoder state */ + SKP_Silk_decoder_control *psDecCtrl, /* I Decoder control */ + SKP_int16 signal[], /* O Concealed signal */ + SKP_int length, /* I length of residual */ + SKP_int lost /* I Loss flag */ +) +{ + /* PLC control function */ + if( psDec->fs_kHz != psDec->sPLC.fs_kHz ) { + SKP_Silk_PLC_Reset( psDec ); + psDec->sPLC.fs_kHz = psDec->fs_kHz; + } + + if( lost ) { + /****************************/ + /* Generate Signal */ + /****************************/ + SKP_Silk_PLC_conceal( psDec, psDecCtrl, signal, length ); + } else { + /****************************/ + /* Update state */ + /****************************/ + SKP_Silk_PLC_update( psDec, psDecCtrl, signal, length ); + } +} + +/**************************************************/ +/* Update state of PLC */ +/**************************************************/ +void SKP_Silk_PLC_update( + SKP_Silk_decoder_state *psDec, /* (I/O) Decoder state */ + SKP_Silk_decoder_control *psDecCtrl, /* (I/O) Decoder control */ + SKP_int16 signal[], + SKP_int length +) +{ + SKP_int32 LTP_Gain_Q14, temp_LTP_Gain_Q14; + SKP_int i, j; + SKP_Silk_PLC_struct *psPLC; + + psPLC = &psDec->sPLC; + + /* Update parameters used in case of packet loss */ + psDec->prev_sigtype = psDecCtrl->sigtype; + LTP_Gain_Q14 = 0; + if( psDecCtrl->sigtype == SIG_TYPE_VOICED ) { + /* Find the parameters for the last subframe which contains a pitch pulse */ + for( j = 0; j * psDec->subfr_length < psDecCtrl->pitchL[ NB_SUBFR - 1 ]; j++ ) { + + + + + + temp_LTP_Gain_Q14 = 0; + for( i = 0; i < LTP_ORDER; i++ ) { + temp_LTP_Gain_Q14 += psDecCtrl->LTPCoef_Q14[ ( NB_SUBFR - 1 - j ) * LTP_ORDER + i ]; + } + if( temp_LTP_Gain_Q14 > LTP_Gain_Q14 ) { + LTP_Gain_Q14 = temp_LTP_Gain_Q14; + SKP_memcpy( psPLC->LTPCoef_Q14, + &psDecCtrl->LTPCoef_Q14[ SKP_SMULBB( NB_SUBFR - 1 - j, LTP_ORDER ) ], + LTP_ORDER * sizeof( SKP_int16 ) ); + + psPLC->pitchL_Q8 = SKP_LSHIFT( psDecCtrl->pitchL[ NB_SUBFR - 1 - j ], 8 ); + } + } + +#if USE_SINGLE_TAP + SKP_memset( psPLC->LTPCoef_Q14, 0, LTP_ORDER * sizeof( SKP_int16 ) ); + psPLC->LTPCoef_Q14[ LTP_ORDER / 2 ] = LTP_Gain_Q14; +#endif + + /* Limit LT coefs */ + if( LTP_Gain_Q14 < V_PITCH_GAIN_START_MIN_Q14 ) { + SKP_int scale_Q10; + SKP_int32 tmp; + + tmp = SKP_LSHIFT( V_PITCH_GAIN_START_MIN_Q14, 10 ); + scale_Q10 = SKP_DIV32( tmp, SKP_max( LTP_Gain_Q14, 1 ) ); + for( i = 0; i < LTP_ORDER; i++ ) { + psPLC->LTPCoef_Q14[ i ] = SKP_RSHIFT( SKP_SMULBB( psPLC->LTPCoef_Q14[ i ], scale_Q10 ), 10 ); + } + } else if( LTP_Gain_Q14 > V_PITCH_GAIN_START_MAX_Q14 ) { + SKP_int scale_Q14; + SKP_int32 tmp; + + tmp = SKP_LSHIFT( V_PITCH_GAIN_START_MAX_Q14, 14 ); + scale_Q14 = SKP_DIV32( tmp, SKP_max( LTP_Gain_Q14, 1 ) ); + for( i = 0; i < LTP_ORDER; i++ ) { + psPLC->LTPCoef_Q14[ i ] = SKP_RSHIFT( SKP_SMULBB( psPLC->LTPCoef_Q14[ i ], scale_Q14 ), 14 ); + } + } + } else { + psPLC->pitchL_Q8 = SKP_LSHIFT( SKP_SMULBB( psDec->fs_kHz, 18 ), 8 ); + SKP_memset( psPLC->LTPCoef_Q14, 0, LTP_ORDER * sizeof( SKP_int16 )); + } + + /* Save LPC coeficients */ + SKP_memcpy( psPLC->prevLPC_Q12, psDecCtrl->PredCoef_Q12[ 1 ], psDec->LPC_order * sizeof( SKP_int16 ) ); + psPLC->prevLTP_scale_Q14 = psDecCtrl->LTP_scale_Q14; + + + + + + + /* Save Gains */ + SKP_memcpy( psPLC->prevGain_Q16, psDecCtrl->Gains_Q16, NB_SUBFR * sizeof( SKP_int32 ) ); +} + +void SKP_Silk_PLC_conceal( + SKP_Silk_decoder_state *psDec, /* I/O Decoder state */ + SKP_Silk_decoder_control *psDecCtrl, /* I/O Decoder control */ + SKP_int16 signal[], /* O concealed signal */ + SKP_int length /* I length of residual */ +) +{ + SKP_int i, j, k; + SKP_int16 *B_Q14, exc_buf[ MAX_FRAME_LENGTH ], *exc_buf_ptr; + SKP_int16 rand_scale_Q14, A_Q12_tmp[ MAX_LPC_ORDER ]; + SKP_int32 rand_seed, harm_Gain_Q15, rand_Gain_Q15; + SKP_int lag, idx, shift1, shift2; + SKP_int32 energy1, energy2, *rand_ptr, *pred_lag_ptr, Atmp; + SKP_int32 sig_Q10[ MAX_FRAME_LENGTH ], *sig_Q10_ptr, LPC_exc_Q10, LPC_pred_Q10, LTP_pred_Q14; + SKP_Silk_PLC_struct *psPLC; + + psPLC = &psDec->sPLC; + + /* Update LTP buffer */ + SKP_memcpy( psDec->sLTP_Q16, &psDec->sLTP_Q16[ psDec->frame_length ], psDec->frame_length * sizeof( SKP_int32 ) ); + + /* LPC concealment. Apply BWE to previous LPC */ + SKP_Silk_bwexpander( psPLC->prevLPC_Q12, psDec->LPC_order, BWE_COEF_Q16 ); + + /* Find random noise component */ + /* Scale previous excitation signal */ + exc_buf_ptr = exc_buf; + for( k = ( NB_SUBFR >> 1 ); k < NB_SUBFR; k++ ) { + for( i = 0; i < psDec->subfr_length; i++ ) { + exc_buf_ptr[ i ] = (SKP_int16)SKP_RSHIFT( + SKP_SMULWW( psDec->exc_Q10[ i + k * psDec->subfr_length ], psPLC->prevGain_Q16[ k ] ), 10 ); + } + exc_buf_ptr += psDec->subfr_length; + } + /* Find the subframe with lowest energy of the last two and use that as random noise generator */ + SKP_Silk_sum_sqr_shift( &energy1, &shift1, exc_buf, psDec->subfr_length ); + SKP_Silk_sum_sqr_shift( &energy2, &shift2, &exc_buf[ psDec->subfr_length ], psDec->subfr_length ); + + if( SKP_RSHIFT( energy1, shift2 ) < SKP_RSHIFT( energy1, shift2 ) ) { + /* First sub-frame has lowest energy */ + rand_ptr = &psDec->exc_Q10[ SKP_max_int( 0, 3 * psDec->subfr_length - RAND_BUF_SIZE ) ]; + } else { + /* Second sub-frame has lowest energy */ + rand_ptr = &psDec->exc_Q10[ SKP_max_int( 0, psDec->frame_length - RAND_BUF_SIZE ) ]; + + + + + + } + + /* Setup Gain to random noise component */ + B_Q14 = psPLC->LTPCoef_Q14; + rand_scale_Q14 = psPLC->randScale_Q14; + + /* Setup attenuation gains */ + harm_Gain_Q15 = HARM_ATT_Q15[ SKP_min_int( NB_ATT - 1, psDec->lossCnt ) ]; + if( psDec->prev_sigtype == SIG_TYPE_VOICED ) { + rand_Gain_Q15 = PLC_RAND_ATTENUATE_V_Q15[ SKP_min_int( NB_ATT - 1, psDec->lossCnt ) ]; + } else { + rand_Gain_Q15 = PLC_RAND_ATTENUATE_UV_Q15[ SKP_min_int( NB_ATT - 1, psDec->lossCnt ) ]; + } + + /* First Lost frame */ + if( psDec->lossCnt == 0 ) { + rand_scale_Q14 = (1 << 14 ); + + /* Reduce random noise Gain for voiced frames */ + if( psDec->prev_sigtype == SIG_TYPE_VOICED ) { + for( i = 0; i < LTP_ORDER; i++ ) { + rand_scale_Q14 -= B_Q14[ i ]; + } + rand_scale_Q14 = SKP_max_16( 3277, rand_scale_Q14 ); /* 0.2 */ + rand_scale_Q14 = (SKP_int16)SKP_RSHIFT( SKP_SMULBB( rand_scale_Q14, psPLC->prevLTP_scale_Q14 ), 14 ); + } + + /* Reduce random noise for unvoiced frames with high LPC gain */ + if( psDec->prev_sigtype == SIG_TYPE_UNVOICED ) { + SKP_int32 invGain_Q30, down_scale_Q30; + + SKP_Silk_LPC_inverse_pred_gain( &invGain_Q30, psPLC->prevLPC_Q12, psDec->LPC_order ); + + down_scale_Q30 = SKP_min_32( SKP_RSHIFT( ( 1 << 30 ), LOG2_INV_LPC_GAIN_HIGH_THRES ), invGain_Q30 ); + down_scale_Q30 = SKP_max_32( SKP_RSHIFT( ( 1 << 30 ), LOG2_INV_LPC_GAIN_LOW_THRES ), down_scale_Q30 ); + down_scale_Q30 = SKP_LSHIFT( down_scale_Q30, LOG2_INV_LPC_GAIN_HIGH_THRES ); + + rand_Gain_Q15 = SKP_RSHIFT( SKP_SMULWB( down_scale_Q30, rand_Gain_Q15 ), 14 ); + } + } + + rand_seed = psPLC->rand_seed; + lag = SKP_RSHIFT_ROUND( psPLC->pitchL_Q8, 8 ); + psDec->sLTP_buf_idx = psDec->frame_length; + + /***************************/ + /* LTP synthesis filtering */ + /***************************/ + + + + + + sig_Q10_ptr = sig_Q10; + for( k = 0; k < NB_SUBFR; k++ ) { + /* Setup pointer */ + pred_lag_ptr = &psDec->sLTP_Q16[ psDec->sLTP_buf_idx - lag + LTP_ORDER / 2 ]; + for( i = 0; i < psDec->subfr_length; i++ ) { + rand_seed = SKP_RAND( rand_seed ); + idx = SKP_RSHIFT( rand_seed, 25 ) & RAND_BUF_MASK; + + /* Unrolled loop */ + LTP_pred_Q14 = SKP_SMULWB( pred_lag_ptr[ 0 ], B_Q14[ 0 ] ); + LTP_pred_Q14 = SKP_SMLAWB( LTP_pred_Q14, pred_lag_ptr[ -1 ], B_Q14[ 1 ] ); + LTP_pred_Q14 = SKP_SMLAWB( LTP_pred_Q14, pred_lag_ptr[ -2 ], B_Q14[ 2 ] ); + LTP_pred_Q14 = SKP_SMLAWB( LTP_pred_Q14, pred_lag_ptr[ -3 ], B_Q14[ 3 ] ); + LTP_pred_Q14 = SKP_SMLAWB( LTP_pred_Q14, pred_lag_ptr[ -4 ], B_Q14[ 4 ] ); + pred_lag_ptr++; + + /* Generate LPC residual */ + LPC_exc_Q10 = SKP_LSHIFT( SKP_SMULWB( rand_ptr[ idx ], rand_scale_Q14 ), 2 ); /* Random noise part */ + LPC_exc_Q10 = SKP_ADD32( LPC_exc_Q10, SKP_RSHIFT_ROUND( LTP_pred_Q14, 4 ) ); /* Harmonic part */ + + /* Update states */ + psDec->sLTP_Q16[ psDec->sLTP_buf_idx ] = SKP_LSHIFT( LPC_exc_Q10, 6 ); + psDec->sLTP_buf_idx++; + + /* Save LPC residual */ + sig_Q10_ptr[ i ] = LPC_exc_Q10; + } + sig_Q10_ptr += psDec->subfr_length; + /* Gradually reduce LTP gain */ + for( j = 0; j < LTP_ORDER; j++ ) { + B_Q14[ j ] = SKP_RSHIFT( SKP_SMULBB( harm_Gain_Q15, B_Q14[ j ] ), 15 ); + } + /* Gradually reduce excitation gain */ + rand_scale_Q14 = SKP_RSHIFT( SKP_SMULBB( rand_scale_Q14, rand_Gain_Q15 ), 15 ); + + /* Slowly increase pitch lag */ + psPLC->pitchL_Q8 += SKP_SMULWB( psPLC->pitchL_Q8, PITCH_DRIFT_FAC_Q16 ); + psPLC->pitchL_Q8 = SKP_min_32( psPLC->pitchL_Q8, SKP_LSHIFT( SKP_SMULBB( MAX_PITCH_LAG_MS, psDec->fs_kHz ), 8 ) ); + lag = SKP_RSHIFT_ROUND( psPLC->pitchL_Q8, 8 ); + } + + /***************************/ + /* LPC synthesis filtering */ + /***************************/ + sig_Q10_ptr = sig_Q10; + /* Preload LPC coeficients to array on stack. Gives small performance gain */ + SKP_memcpy( A_Q12_tmp, psPLC->prevLPC_Q12, psDec->LPC_order * sizeof(SKP_int16) ); + SKP_assert( psDec->LPC_order >= 10 ); /* check that unrolling works */ + + + + + + for( k = 0; k < NB_SUBFR; k++ ) { + for( i = 0; i < psDec->subfr_length; i++ ){ + /* unrolled */ + Atmp = *( (SKP_int32*)&A_Q12_tmp[ 0 ] ); /* read two coefficients at once */ + LPC_pred_Q10 = SKP_SMULWB( psDec->sLPC_Q14[ MAX_LPC_ORDER + i - 1 ], Atmp ); + LPC_pred_Q10 = SKP_SMLAWT( LPC_pred_Q10, psDec->sLPC_Q14[ MAX_LPC_ORDER + i - 2 ], Atmp ); + Atmp = *( (SKP_int32*)&A_Q12_tmp[ 2 ] ); + LPC_pred_Q10 = SKP_SMLAWB( LPC_pred_Q10, psDec->sLPC_Q14[ MAX_LPC_ORDER + i - 3 ], Atmp ); + LPC_pred_Q10 = SKP_SMLAWT( LPC_pred_Q10, psDec->sLPC_Q14[ MAX_LPC_ORDER + i - 4 ], Atmp ); + Atmp = *( (SKP_int32*)&A_Q12_tmp[ 4 ] ); + LPC_pred_Q10 = SKP_SMLAWB( LPC_pred_Q10, psDec->sLPC_Q14[ MAX_LPC_ORDER + i - 5 ], Atmp ); + LPC_pred_Q10 = SKP_SMLAWT( LPC_pred_Q10, psDec->sLPC_Q14[ MAX_LPC_ORDER + i - 6 ], Atmp ); + Atmp = *( (SKP_int32*)&A_Q12_tmp[ 6 ] ); + LPC_pred_Q10 = SKP_SMLAWB( LPC_pred_Q10, psDec->sLPC_Q14[ MAX_LPC_ORDER + i - 7 ], Atmp ); + LPC_pred_Q10 = SKP_SMLAWT( LPC_pred_Q10, psDec->sLPC_Q14[ MAX_LPC_ORDER + i - 8 ], Atmp ); + Atmp = *( (SKP_int32*)&A_Q12_tmp[ 8 ] ); + LPC_pred_Q10 = SKP_SMLAWB( LPC_pred_Q10, psDec->sLPC_Q14[ MAX_LPC_ORDER + i - 9 ], Atmp ); + LPC_pred_Q10 = SKP_SMLAWT( LPC_pred_Q10, psDec->sLPC_Q14[ MAX_LPC_ORDER + i - 10 ], Atmp ); + for( j = 10 ; j < psDec->LPC_order ; j+=2 ) { + Atmp = *( (SKP_int32*)&A_Q12_tmp[ j ] ); + LPC_pred_Q10 = SKP_SMLAWB( LPC_pred_Q10, psDec->sLPC_Q14[ MAX_LPC_ORDER + i - 1 - j ], Atmp ); + LPC_pred_Q10 = SKP_SMLAWT( LPC_pred_Q10, psDec->sLPC_Q14[ MAX_LPC_ORDER + i - 2 - j ], Atmp ); + } + + /* Add prediction to LPC residual */ + sig_Q10_ptr[ i ] = SKP_ADD32( sig_Q10_ptr[ i ], LPC_pred_Q10 ); + + /* Update states */ + psDec->sLPC_Q14[ MAX_LPC_ORDER + i ] = SKP_LSHIFT( sig_Q10_ptr[ i ], 4 ); + } + sig_Q10_ptr += psDec->subfr_length; + /* Update LPC filter state */ + SKP_memcpy( psDec->sLPC_Q14, &psDec->sLPC_Q14[ psDec->subfr_length ], MAX_LPC_ORDER * sizeof( SKP_int32 ) ); + } + + /* Scale with Gain */ + for( i = 0; i < psDec->frame_length; i++ ) { + signal[ i ] = (SKP_int16)SKP_SAT16( SKP_RSHIFT_ROUND( SKP_SMULWW( sig_Q10[ i ], psPLC->prevGain_Q16[ NB_SUBFR - 1 ] ), 10 ) ); + } + + /**************************************/ + /* Update states */ + /**************************************/ + psPLC->rand_seed = rand_seed; + psPLC->randScale_Q14 = rand_scale_Q14; + for( i = 0; i < NB_SUBFR; i++ ) { + psDecCtrl->pitchL[ i ] = lag; + } + + + + + +} + +/* Glues concealed frames with new good recieved frames */ +void SKP_Silk_PLC_glue_frames( + SKP_Silk_decoder_state *psDec, /* I/O decoder state */ + SKP_Silk_decoder_control *psDecCtrl, /* I/O Decoder control */ + SKP_int16 signal[], /* I/O signal */ + SKP_int length /* I length of residual */ +) +{ + SKP_int i, energy_shift; + SKP_int32 energy; + SKP_Silk_PLC_struct *psPLC; + psPLC = &psDec->sPLC; + + if( psDec->lossCnt ) { + /* Calculate energy in concealed residual */ + SKP_Silk_sum_sqr_shift( &psPLC->conc_energy, &psPLC->conc_energy_shift, signal, length ); + + psPLC->last_frame_lost = 1; + } else { + if( psDec->sPLC.last_frame_lost ) { + /* Calculate residual in decoded signal if last frame was lost */ + SKP_Silk_sum_sqr_shift( &energy, &energy_shift, signal, length ); + + /* Normalize energies */ + if( energy_shift > psPLC->conc_energy_shift ) { + psPLC->conc_energy = SKP_RSHIFT( psPLC->conc_energy, energy_shift - psPLC->conc_energy_shift ); + } else if( energy_shift < psPLC->conc_energy_shift ) { + energy = SKP_RSHIFT( energy, psPLC->conc_energy_shift - energy_shift ); + } + + /* Fade in the energy difference */ + if( energy > psPLC->conc_energy ) { + SKP_int32 frac_Q24, LZ; + SKP_int32 gain_Q12, slope_Q12; + + LZ = SKP_Silk_CLZ32( psPLC->conc_energy ); + LZ = LZ - 1; + psPLC->conc_energy = SKP_LSHIFT( psPLC->conc_energy, LZ ); + energy = SKP_RSHIFT( energy, SKP_max_32( 24 - LZ, 0 ) ); + + frac_Q24 = SKP_DIV32( psPLC->conc_energy, SKP_max( energy, 1 ) ); + + gain_Q12 = SKP_Silk_SQRT_APPROX( frac_Q24 ); + slope_Q12 = SKP_DIV32_16( ( 1 << 12 ) - gain_Q12, length ); + + for( i = 0; i < length; i++ ) { + + + + + + signal[ i ] = SKP_RSHIFT( SKP_MUL( gain_Q12, signal[ i ] ), 12 ); + gain_Q12 += slope_Q12; + gain_Q12 = SKP_min( gain_Q12, ( 1 << 12 ) ); + } + } + } + psPLC->last_frame_lost = 0; + + } +} + + diff --git a/libs/silk/src/SKP_Silk_PLC.h b/libs/silk/src/SKP_Silk_PLC.h new file mode 100644 index 0000000000..fb9e8026d4 --- /dev/null +++ b/libs/silk/src/SKP_Silk_PLC.h @@ -0,0 +1,93 @@ + + +/*********************************************************************** + +Copyright (c) 2006-2010, Skype Limited. All rights reserved. +Redistribution and use in source and binary forms, with or without +modification, (subject to the limitations in the disclaimer below) +are permitted provided that the following conditions are met: +- Redistributions of source code must retain the above copyright notice, +this list of conditions and the following disclaimer. +- Redistributions in binary form must reproduce the above copyright +notice, this list of conditions and the following disclaimer in the +documentation and/or other materials provided with the distribution. +- Neither the name of Skype Limited, nor the names of specific +contributors, may be used to endorse or promote products derived from +this software without specific prior written permission. +NO EXPRESS OR IMPLIED LICENSES TO ANY PARTY'S PATENT RIGHTS ARE GRANTED +BY THIS LICENSE.THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND +CONTRIBUTORS ''AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, +BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND +FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE +COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, +INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT +NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF +USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON +ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT +(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE +OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + +***********************************************************************/ + +#ifndef SKP_SILK_PLC_FIX_H +#define SKP_SILK_PLC_FIX_H + +#include "SKP_Silk_main_FIX.h" + + + + + +#define BWE_COEF_Q16 64880 /* 0.99 in Q16 */ +#define V_PITCH_GAIN_START_MIN_Q14 11469 /* 0.7 in Q14 */ +#define V_PITCH_GAIN_START_MAX_Q14 15565 /* 0.95 in Q14 */ +#define MAX_PITCH_LAG_MS 18 +#define SA_THRES_Q8 50 +#define USE_SINGLE_TAP 1 +#define RAND_BUF_SIZE 128 +#define RAND_BUF_MASK (RAND_BUF_SIZE - 1) +#define LOG2_INV_LPC_GAIN_HIGH_THRES 4 /* 2^4 = 12 dB LPC gain */ +#define LOG2_INV_LPC_GAIN_LOW_THRES 8 /* 2^8 = 24 dB LPC gain */ +#define PITCH_DRIFT_FAC_Q16 655 /* 0.01 in Q16 */ + +void SKP_Silk_PLC_Reset( + SKP_Silk_decoder_state *psDec /* I/O Decoder state */ +); + +void SKP_Silk_PLC( + SKP_Silk_decoder_state *psDec, /* I/O Decoder state */ + SKP_Silk_decoder_control *psDecCtrl, /* I/O Decoder control */ + SKP_int16 signal[], /* I/O signal */ + SKP_int length, /* I length of residual */ + SKP_int lost /* I Loss flag */ +); + +void SKP_Silk_PLC_update( + SKP_Silk_decoder_state *psDec, /* I/O Decoder state */ + SKP_Silk_decoder_control *psDecCtrl, /* I/O Decoder control */ + SKP_int16 signal[], + SKP_int length +); + +void SKP_Silk_PLC_conceal( + SKP_Silk_decoder_state *psDec, /* I/O Decoder state */ + SKP_Silk_decoder_control *psDecCtrl, /* I/O Decoder control */ + SKP_int16 signal[], /* O LPC residual signal */ + SKP_int length /* I length of signal */ +); + +void SKP_Silk_PLC_glue_frames( + SKP_Silk_decoder_state *psDec, /* I/O decoder state */ + SKP_Silk_decoder_control *psDecCtrl, /* I/O Decoder control */ + SKP_int16 signal[], /* I/O signal */ + SKP_int length /* I length of signal */ +); + +#endif + + + + + + + diff --git a/libs/silk/src/SKP_Silk_SigProc_FIX.h b/libs/silk/src/SKP_Silk_SigProc_FIX.h new file mode 100644 index 0000000000..94087cd420 --- /dev/null +++ b/libs/silk/src/SKP_Silk_SigProc_FIX.h @@ -0,0 +1,887 @@ + + +/*********************************************************************** + +Copyright (c) 2006-2010, Skype Limited. All rights reserved. +Redistribution and use in source and binary forms, with or without +modification, (subject to the limitations in the disclaimer below) +are permitted provided that the following conditions are met: +- Redistributions of source code must retain the above copyright notice, +this list of conditions and the following disclaimer. +- Redistributions in binary form must reproduce the above copyright +notice, this list of conditions and the following disclaimer in the +documentation and/or other materials provided with the distribution. +- Neither the name of Skype Limited, nor the names of specific +contributors, may be used to endorse or promote products derived from +this software without specific prior written permission. + + + + + +NO EXPRESS OR IMPLIED LICENSES TO ANY PARTY'S PATENT RIGHTS ARE GRANTED +BY THIS LICENSE.THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND +CONTRIBUTORS ''AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, +BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND +FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE +COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, +INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT +NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF +USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON +ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT +(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE +OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + +***********************************************************************/ + +/*! \file SKP_Silk_SigProc.h + */ + +#ifndef _SKP_SILK_SIGPROC_H_ +#define _SKP_SILK_SIGPROC_H_ + +#ifdef __cplusplus +extern "C" +{ +#endif + +#define SigProc_MAX_ORDER_LPC 16 /* max order of the LPC analysis in schur() and k2a() */ +#define SigProc_MAX_CORRELATION_LENGTH 640 /* max input length to the correlation */ +#include "SKP_Silk_typedef.h" +#include +#include /* for abs() */ +#include "SKP_Silk_macros.h" +#include "SKP_Silk_resample_rom.h" + + + +/********************************************************************/ +/* SIGNAL PROCESSING FUNCTIONS */ +/********************************************************************/ + +/* downsample by a factor 2 */ +void SKP_Silk_resample_1_2( + const SKP_int16 *in, /* I: 16 kHz signal [2*len] */ + SKP_int32 *S, /* I/O: State vector [6] */ + SKP_int16 *out, /* O: 8 kHz signal [len] */ + SKP_int32 *scratch, /* I: Scratch memory [4*len] */ + const SKP_int32 len /* I: Number of OUTPUT samples */ +); + + + + + +/*! + * downsample by a factor 2, coarser (good for resampling audio) + */ +void SKP_Silk_resample_1_2_coarse( + const SKP_int16 *in, /* I: 16 kHz signal [2*len] */ + SKP_int32 *S, /* I/O: state vector [4] */ + SKP_int16 *out, /* O: 8 kHz signal [len] */ + SKP_int32 *scratch, /* I: scratch memory [3*len] */ + const SKP_int32 len /* I: number of OUTPUT samples */ +); + +/*! + * downsample by a factor 2, coarsest (good for signals that are already oversampled, or for analysis purposes) + */ +void SKP_Silk_resample_1_2_coarsest( + const SKP_int16 *in, /* I: 16 kHz signal [2*len] */ + SKP_int32 *S, /* I/O: State vector [2] */ + SKP_int16 *out, /* O: 8 kHz signal [len] */ + SKP_int32 *scratch, /* I: Scratch memory [3*len] */ + const SKP_int32 len /* I: Number of OUTPUT samples */ +); + +/*! + * upsample by a factor 2, coarser (good for resampling audio) + */ +void SKP_Silk_resample_2_1_coarse( + const SKP_int16 *in, /* I: 8 kHz signal [len] */ + SKP_int32 *S, /* I/O: State vector [4] */ + SKP_int16 *out, /* O: 16 kHz signal [2*len] */ + SKP_int32 *scratch, /* I: Scratch memory [3*len] */ + const SKP_int32 len /* I: Number of INPUT samples */ +); + +/*! + * Resamples by a factor 1/3 + */ +void SKP_Silk_resample_1_3( + SKP_int16 *out, /* O: Fs_low signal [inLen/3] */ + SKP_int32 *S, /* I/O: State vector [7] */ + const SKP_int16 *in, /* I: Fs_high signal [inLen] */ + const SKP_int32 inLen /* I: Input length, must be a multiple of 3 */ +); + +/*! + * Resamples by a factor 3/1 + */ +void SKP_Silk_resample_3_1( + SKP_int16 *out, /* O: Fs_high signal [inLen*3] */ + + + + + + SKP_int32 *S, /* I/O: State vector [7] */ + const SKP_int16 *in, /* I: Fs_low signal [inLen] */ + const SKP_int32 inLen /* I: Input length */ +); + +/*! + * Resamples by a factor 2/3 + */ +void SKP_Silk_resample_2_3( + SKP_int16 *out, /* O: Fs_low signal [inLen * 2/3] */ + SKP_int32 *S, /* I/O: State vector [7+4] */ + const SKP_int16 *in, /* I: Fs_high signal [inLen] */ + const SKP_int inLen /* I: Input length, must be a multiple of 3 */ +); + +/*! + * Resamples by a factor 3/2 + */ +void SKP_Silk_resample_3_2( + SKP_int16 *out, /* O: Fs_high signal [inLen*3/2] */ + SKP_int32 *S, /* I/O: State vector [7+4] */ + const SKP_int16 *in, /* I: Fs_low signal [inLen] */ + SKP_int inLen /* I: Input length, must be a multiple of 2 */ +); + +/*! + * Resamples by a factor 4/3 + */ +void SKP_Silk_resample_4_3( + SKP_int16 *out, /* O: Fs_low signal [inLen * 4/3] */ + SKP_int32 *S, /* I/O: State vector [7+4+4] */ + const SKP_int16 *in, /* I: Fs_high signal [inLen] */ + const SKP_int inLen /* I: input length, must be a multiple of 3 */ +); + +/*! + * Resamples by a factor 3/4 + */ + void SKP_Silk_resample_3_4( + SKP_int16 *out, /* O: Fs_high signal [inLen*3/4] */ + SKP_int32 *S, /* I/O: State vector [7+2+6] */ + const SKP_int16 *in, /* I: Fs_low signal [inLen] */ + SKP_int inLen /* I: Input length, must be a multiple of 4 */ +); + +/*! + * resample with a factor 2/3 coarse + */ + + + + + +void SKP_Silk_resample_2_3_coarse( + SKP_int16 *out, /* O: Output signal */ + SKP_int16 *S, /* I/O: Resampler state [ SigProc_Resample_2_3_coarse_NUM_FIR_COEFS - 1 ] */ + const SKP_int16 *in, /* I: Input signal */ + const SKP_int frameLenIn, /* I: Number of input samples */ + SKP_int16 *scratch /* I: Scratch memory [ frameLenIn + SigProc_Resample_2_3_coarse_NUM_FIR_COEFS - 1 ] */ +); + +/*! + * resample with a factor 2/3 coarsest + */ +void SKP_Silk_resample_2_3_coarsest( + SKP_int16 *out, /* O: Output signal */ + SKP_int16 *S, /* I/O: Resampler state [ SigProc_Resample_2_3_coarsest_NUM_FIR_COEFS - 1 ] */ + const SKP_int16 *in, /* I: Input signal */ + const SKP_int frameLenIn, /* I: Number of input samples */ + SKP_int16 *scratch /* I: Scratch memory [ frameLenIn + SigProc_Resample_2_3_coarsest_NUM_FIR_COEFS - 1 ] */ +); + +/*! + * First order low-pass filter, with input as SKP_int16, running at 48 kHz + */ +void SKP_Silk_lowpass_short( + const SKP_int16 *in, /* I: Q15 48 kHz signal; [len] */ + SKP_int32 *S, /* I/O: Q25 state; length = 1 */ + SKP_int32 *out, /* O: Q25 48 kHz signal; [len] */ + const SKP_int32 len /* O: Signal length */ +); + +/*! + * First order low-pass filter, with input as SKP_int32, running at 48 kHz + */ +void SKP_Silk_lowpass_int( + const SKP_int32 *in, /* I: Q25 48 kHz signal; length = len */ + SKP_int32 *S, /* I/O: Q25 state; length = 1 */ + SKP_int32 *out, /* O: Q25 48 kHz signal; length = len */ + const SKP_int32 len /* I: Number of samples */ +); + +/*! + * First-order allpass filter + */ +void SKP_Silk_allpass_int( + const SKP_int32 *in, /* I: Q25 input signal [len] */ + SKP_int32 *S, /* I/O: Q25 state [1] */ + SKP_int A, /* I: Q15 coefficient (0 <= A < 32768) */ + SKP_int32 *out, /* O: Q25 output signal [len] */ + const SKP_int32 len /* I: Number of samples */ + + + + + +); + +/*! + * second order ARMA filter + * can handle (slowly) varying coefficients + */ +void SKP_Silk_biquad( + const SKP_int16 *in, /* I: input signal */ + const SKP_int16 *B, /* I: MA coefficients, Q13 [3] */ + const SKP_int16 *A, /* I: AR coefficients, Q13 [2] */ + SKP_int32 *S, /* I/O: state vector [2] */ + SKP_int16 *out, /* O: output signal */ + const SKP_int32 len /* I: signal length */ +); +/*! + * second order ARMA filter; + * slower than biquad() but uses more precise coefficients + * can handle (slowly) varying coefficients + */ +void SKP_Silk_biquad_alt( + const SKP_int16 *in, /* I: input signal */ + const SKP_int32 *B_Q28, /* I: MA coefficients [3] */ + const SKP_int32 *A_Q28, /* I: AR coefficients [2] */ + SKP_int32 *S, /* I/O: state vector [2] */ + SKP_int16 *out, /* O: output signal */ + const SKP_int32 len /* I: signal length (must be even) */ +); + +/*! + * variable order MA filter. Prediction error filter implementation. Coeficients negated and starting with coef to x[n - 1] + */ +void SKP_Silk_MA_Prediction( + const SKP_int16 *in, /* I: Input signal */ + const SKP_int16 *B, /* I: MA prediction coefficients, Q12 [order] */ + SKP_int32 *S, /* I/O: State vector [order] */ + SKP_int16 *out, /* O: Output signal */ + const SKP_int32 len, /* I: Signal length */ + const SKP_int32 order /* I: Filter order */ +); + +void SKP_Silk_MA_Prediction_Q13( + const SKP_int16 *in, /* I: input signal */ + const SKP_int16 *B, /* I: MA prediction coefficients, Q13 [order] */ + SKP_int32 *S, /* I/O: state vector [order] */ + SKP_int16 *out, /* O: output signal */ + SKP_int32 len, /* I: signal length */ + SKP_int32 order /* I: filter order */ +); + + + + + +/*! + * 16th order AR filter for LPC synthesis, coefficients are in Q12 + */ +void SKP_Silk_LPC_synthesis_order16( + const SKP_int16 *in, /* I: excitation signal */ + const SKP_int16 *A_Q12, /* I: AR coefficients [16], between -8_Q0 and 8_Q0 */ + const SKP_int32 Gain_Q26, /* I: gain */ + SKP_int32 *S, /* I/O: state vector [16] */ + SKP_int16 *out, /* O: output signal */ + const SKP_int32 len /* I: signal length, must be multiple of 16 */ +); + +/* variable order MA prediction error filter. */ +/* Inverse filter of SKP_Silk_LPC_synthesis_filter */ +void SKP_Silk_LPC_analysis_filter( + const SKP_int16 *in, /* I: Input signal */ + const SKP_int16 *B, /* I: MA prediction coefficients, Q12 [order] */ + SKP_int16 *S, /* I/O: State vector [order] */ + SKP_int16 *out, /* O: Output signal */ + const SKP_int32 len, /* I: Signal length */ + const SKP_int32 Order /* I: Filter order */ +); + +/* even order AR filter */ +void SKP_Silk_LPC_synthesis_filter( + const SKP_int16 *in, /* I: excitation signal */ + const SKP_int16 *A_Q12, /* I: AR coefficients [Order], between -8_Q0 and 8_Q0 */ + const SKP_int32 Gain_Q26, /* I: gain */ + SKP_int32 *S, /* I/O: state vector [Order] */ + SKP_int16 *out, /* O: output signal */ + const SKP_int32 len, /* I: signal length */ + const SKP_int Order /* I: filter order, must be even */ +); + +/* Chirp (bandwidth expand) LP AR filter */ +void SKP_Silk_bwexpander( + SKP_int16 *ar, /* I/O AR filter to be expanded (without leading 1) */ + const SKP_int d, /* I Length of ar */ + SKP_int32 chirp_Q16 /* I Chirp factor (typically in the range 0 to 1) */ +); + +/* Chirp (bandwidth expand) LP AR filter */ +void SKP_Silk_bwexpander_32( + SKP_int32 *ar, /* I/O AR filter to be expanded (without leading 1) */ + const SKP_int d, /* I Length of ar */ + SKP_int32 chirp_Q16 /* I Chirp factor in Q16 */ +); + + + + + + +/* Compute inverse of LPC prediction gain, and */ +/* test if LPC coefficients are stable (all poles within unit circle) */ +SKP_int SKP_Silk_LPC_inverse_pred_gain( /* O: Returns 1 if unstable, otherwise 0 */ + SKP_int32 *invGain_Q30, /* O: Inverse prediction gain, Q30 energy domain */ + const SKP_int16 *A_Q12, /* I: Prediction coefficients, Q12 [order] */ + const SKP_int order /* I: Prediction order */ +); + +SKP_int SKP_Silk_LPC_inverse_pred_gain_Q13( /* O: returns 1 if unstable, otherwise 0 */ + SKP_int32 *invGain_Q30, /* O: Inverse prediction gain, Q30 energy domain */ + const SKP_int16 *A_Q13, /* I: Prediction coefficients, Q13 [order] */ + const SKP_int order /* I: Prediction order */ +); + +/* split signal in two decimated bands using first-order allpass filters */ +void SKP_Silk_ana_filt_bank_1( + const SKP_int16 *in, /* I: Input signal [N] */ + SKP_int32 *S, /* I/O: State vector [2] */ + SKP_int16 *outL, /* O: Low band [N/2] */ + SKP_int16 *outH, /* O: High band [N/2] */ + SKP_int32 *scratch, /* I: Scratch memory [3*N/2] */ + const SKP_int32 N /* I: Number of input samples */ +); + +/********************************************************************/ +/* SCALAR FUNCTIONS */ +/********************************************************************/ + +/* approximation of 128 * log2() (exact inverse of approx 2^() below) */ +/* convert input to a log scale */ +SKP_int32 SKP_Silk_lin2log(const SKP_int32 inLin); /* I: input in linear scale */ + +/* Approximation of a sigmoid function */ +SKP_int SKP_Silk_sigm_Q15(SKP_int in_Q5); + +/* approximation of 2^() (exact inverse of approx log2() above) */ +/* convert input to a linear scale */ +SKP_int32 SKP_Silk_log2lin(const SKP_int32 inLog_Q7); /* I: input on log scale */ + +/* Function that returns the maximum absolut value of the input vector */ +SKP_int16 SKP_Silk_int16_array_maxabs( /* O Maximum absolute value, max: 2^15-1 */ + const SKP_int16 *vec, /* I Input vector [len] */ + const SKP_int32 len /* I Length of input vector */ +); + +/* Compute number of bits to right shift the sum of squares of a vector */ +/* of int16s to make it fit in an int32 */ +void SKP_Silk_sum_sqr_shift( + + + + + + SKP_int32 *energy, /* O Energy of x, after shifting to the right */ + SKP_int *shift, /* O Number of bits right shift applied to energy */ + const SKP_int16 *x, /* I Input vector */ + SKP_int len /* I Length of input vector */ +); + +/* Calculates the reflection coefficients from the correlation sequence */ +/* Faster than schur64(), but much less accurate. */ +/* Uses SMLAWB(), requiring armv5E and higher. */ +void SKP_Silk_schur( + SKP_int16 *rc_Q15, /* O: reflection coefficients [order] Q15 */ + const SKP_int32 *c, /* I: correlations [order+1] */ + const SKP_int32 order /* I: prediction order */ +); + +/* Calculates the reflection coefficients from the correlation sequence */ +/* Slower than schur(), but more accurate. */ +/* Uses SMULL(), available on armv4 */ +SKP_int32 SKP_Silk_schur64( /* O: returns residual energy */ + SKP_int32 rc_Q16[], /* O: Reflection coefficients [order] Q16 */ + const SKP_int32 c[], /* I: Correlations [order+1] */ + SKP_int32 order /* I: Prediction order */ +); + +/* Step up function, converts reflection coefficients to prediction coefficients */ +void SKP_Silk_k2a( + SKP_int32 *A_Q24, /* O: Prediction coefficients [order] Q24 */ + const SKP_int16 *rc_Q15, /* I: Reflection coefficients [order] Q15 */ + const SKP_int32 order /* I: Prediction order */ +); + +/* Step up function, converts reflection coefficients to prediction coefficients */ +void SKP_Silk_k2a_Q16( + SKP_int32 *A_Q24, /* O: Prediction coefficients [order] Q24 */ + const SKP_int32 *rc_Q16, /* I: Reflection coefficients [order] Q16 */ + const SKP_int32 order /* I: Prediction order */ +); + +/* Apply sine window to signal vector. */ +/* Window types: */ +/* 0 -> sine window from 0 to pi */ +/* 1 -> sine window from 0 to pi/2 */ +/* 2 -> sine window from pi/2 to pi */ +/* every other sample of window is linearly interpolated, for speed */ +void SKP_Silk_apply_sine_window( + SKP_int16 px_win[], /* O Pointer to windowed signal */ + const SKP_int16 px[], /* I Pointer to input signal */ + const SKP_int win_type, /* I Selects a window type */ + + + + + + const SKP_int length /* I Window length, multiple of 4 */ +); + +/* Compute autocorrelation */ +void SKP_Silk_autocorr( + SKP_int32 *results, /* O Result (length correlationCount) */ + SKP_int32 *scale, /* O Scaling of the correlation vector */ + const SKP_int16 *inputData, /* I Input data to correlate */ + const SKP_int inputDataSize, /* I Length of input */ + const SKP_int correlationCount /* I Number of correlation taps to compute */ +); + +/* Pitch estimator */ +#define SigProc_PITCH_EST_MIN_COMPLEX 0 +#define SigProc_PITCH_EST_MID_COMPLEX 1 +#define SigProc_PITCH_EST_MAX_COMPLEX 2 + +void SKP_Silk_decode_pitch( + SKP_int lagIndex, /* I */ + SKP_int contourIndex, /* O */ + SKP_int pitch_lags[], /* O 4 pitch values */ + SKP_int Fs_kHz /* I sampling frequency (kHz) */ +); + +SKP_int SKP_Silk_pitch_analysis_core( /* O Voicing estimate: 0 voiced, 1 unvoiced */ + const SKP_int16 *signal, /* I Signal of length PITCH_EST_FRAME_LENGTH_MS*Fs_kHz */ + SKP_int *pitch_out, /* O 4 pitch lag values */ + SKP_int *lagIndex, /* O Lag Index */ + SKP_int *contourIndex, /* O Pitch contour Index */ + SKP_int *LTPCorr_Q15, /* I/O Normalized correlation; input: value from previous frame */ + SKP_int prevLag, /* I Last lag of previous frame; set to zero is unvoiced */ + const SKP_int32 search_thres1_Q16, /* I First stage threshold for lag candidates 0 - 1 */ + const SKP_int search_thres2_Q15, /* I Final threshold for lag candidates 0 - 1 */ + const SKP_int Fs_kHz, /* I Sample frequency (kHz) */ + const SKP_int complexity /* I Complexity setting, 0-2, where 2 is highest */ +); + +/* parameter defining the size and accuracy of the piecewise linear */ +/* cosine approximatin table. */ + +#define LSF_COS_TAB_SZ_FIX 128 +/* rom table with cosine values */ +extern const SKP_int SKP_Silk_LSFCosTab_FIX_Q12[ LSF_COS_TAB_SZ_FIX + 1 ]; + +void SKP_Silk_LPC_fit( + SKP_int16 *a_QQ, /* O stabilized LPC vector, Q(24-rshift) [L] */ + SKP_int32 *a_Q24, /* I LPC vector [L] */ + const SKP_int QQ, /* I Q domain of output LPC vector */ + + + + + + const SKP_int L /* I Number of LPC parameters in the input vector */ +); + +/* Compute Normalized Line Spectral Frequencies (NLSFs) from whitening filter coefficients */ +/* If not all roots are found, the a_Q16 coefficients are bandwidth expanded until convergence. */ +void SKP_Silk_A2NLSF( + SKP_int *NLSF, /* O Normalized Line Spectral Frequencies, Q15 (0 - (2^15-1)), [d] */ + SKP_int32 *a_Q16, /* I/O Monic whitening filter coefficients in Q16 [d] */ + const SKP_int d /* I Filter order (must be even) */ +); + +/* compute whitening filter coefficients from normalized line spectral frequencies */ +void SKP_Silk_NLSF2A( + SKP_int16 *a, /* o monic whitening filter coefficients in Q12, [d] */ + const SKP_int *NLSF, /* i normalized line spectral frequencies in Q15, [d] */ + const SKP_int d /* i filter order (should be even) */ +); + +void SKP_Silk_insertion_sort_increasing( + SKP_int32 *a, /* I/O Unsorted / Sorted vector */ + SKP_int *index, /* O: Index vector for the sorted elements */ + const SKP_int L, /* I: Vector length */ + const SKP_int K /* I: Number of correctly sorted positions */ +); + +void SKP_Silk_insertion_sort_decreasing( + SKP_int *a, /* I/O: Unsorted / Sorted vector */ + SKP_int *index, /* O: Index vector for the sorted elements */ + const SKP_int L, /* I: Vector length */ + const SKP_int K /* I: Number of correctly sorted positions */ +); + +void SKP_Silk_insertion_sort_decreasing_int16( + SKP_int16 *a, /* I/O: Unsorted / Sorted vector */ + SKP_int *index, /* O: Index vector for the sorted elements */ + const SKP_int L, /* I: Vector length */ + const SKP_int K /* I: Number of correctly sorted positions */ +); + +void SKP_Silk_insertion_sort_increasing_all_values( + SKP_int *a, /* I/O: Unsorted / Sorted vector */ + const SKP_int L /* I: Vector length */ +); + +/* NLSF stabilizer, for a single input data vector */ +void SKP_Silk_NLSF_stabilize( + SKP_int *NLSF_Q15, /* I/O: Unstable/stabilized normalized LSF vector in Q15 [L] */ + const SKP_int *NDeltaMin_Q15, /* I: Normalized delta min vector in Q15, NDeltaMin_Q15[L] must be >= 1 [L+1] */ + + + + + + const SKP_int L /* I: Number of NLSF parameters in the input vector */ +); + +/* NLSF stabilizer, over multiple input column data vectors */ +void SKP_Silk_NLSF_stabilize_multi( + SKP_int *NLSF_Q15, /* I/O: Unstable/stabilized normalized LSF vectors in Q15 [LxN] */ + const SKP_int *NDeltaMin_Q15, /* I: Normalized delta min vector in Q15, NDeltaMin_Q15[L] must be >= 1 [L+1] */ + const SKP_int N, /* I: Number of input vectors to be stabilized */ + const SKP_int L /* I: NLSF vector dimension */ +); + +/* Laroia low complexity NLSF weights */ +void SKP_Silk_NLSF_VQ_weights_laroia( + SKP_int *pNLSFW_Q6, /* O: Pointer to input vector weights [D x 1] */ + const SKP_int *pNLSF_Q15, /* I: Pointer to input vector [D x 1] */ + const SKP_int D /* I: Input vector dimension (even) */ +); + +/* Compute reflection coefficients from input signal */ +void SKP_Silk_burg_modified( + SKP_int32 *res_nrg, /* O residual energy */ + SKP_int *res_nrgQ, /* O residual energy Q value */ + SKP_int32 A_Q16[], /* O prediction coefficients (length order) */ + const SKP_int16 x[], /* I input signal, length: nb_subfr * ( D + subfr_length ) */ + const SKP_int subfr_length, /* I input signal subframe length (including D preceeding samples) */ + const SKP_int nb_subfr, /* I number of subframes stacked in x */ + const SKP_int32 WhiteNoiseFrac_Q32, /* I fraction added to zero-lag autocorrelation */ + const SKP_int D /* I order */ +); + +/* Multiply a vector by a constant */ +void SKP_Silk_scale_vector16_Q14( + SKP_int16 *data1, + SKP_int gain_Q14, /* Gain in Q14 */ + SKP_int dataSize +); + +/* Copy and multiply a vector by a constant */ +void SKP_Silk_scale_copy_vector16( + SKP_int16 *data_out, + const SKP_int16 *data_in, + SKP_int32 gain_Q16, /* I: gain in Q16 */ + const SKP_int dataSize /* I: length */ +); + +void SKP_Silk_scale_vector32_16_Q14( + SKP_int32 *data1, /* I/O: Q0/Q0 */ + SKP_int gain_Q14, /* I: Q14 */ + + + + + + SKP_int dataSize /* I: length */ +); + +/* Multiply a vector by a constant, does not saturate output data */ +void SKP_Silk_scale_vector32_Q16( + SKP_int32 *data1, /* I/O: Q0/Q0 */ + SKP_int32 gain_Q16, /* I: gain in Q16 ( SKP_int16_MIN <= gain_Q16 <= SKP_int16_MAX + 65536 ) */ + const SKP_int dataSize /* I: length */ +); + +/* Some for the LTP related function requires Q26 to work.*/ +void SKP_Silk_scale_vector32_Q26_lshift_18( + SKP_int32 *data1, /* I/O: Q0/Q18 */ + SKP_int32 gain_Q26, /* I: Q26 */ + SKP_int dataSize /* I: length */ +); + +/********************************************************************/ +/* INLINE ARM MATH */ +/********************************************************************/ + +/* return sum(inVec1[i]*inVec2[i]) */ +/* inVec1 and inVec2 should be increasing ordered, and starting address should be 4 byte aligned. (a factor of 4)*/ +SKP_int32 SKP_Silk_inner_prod_aligned( + const SKP_int16* const inVec1, /* I input vector 1 */ + const SKP_int16* const inVec2, /* I input vector 2 */ + const SKP_int len /* I vector lengths */ +); + +SKP_int32 SKP_Silk_inner_prod16_aligned_sat( + const SKP_int16* const inVec1, /* I input vector 1 */ + const SKP_int16* const inVec2, /* I input vector 2 */ + const SKP_int len /* I vector lengths */ +); + +SKP_int64 SKP_Silk_inner_prod_aligned_64( + const SKP_int32 *inVec1, /* I input vector 1 */ + const SKP_int32 *inVec2, /* I input vector 2 */ + const SKP_int len /* I vector lengths */ +); + +SKP_int64 SKP_Silk_inner_prod16_aligned_64( + const SKP_int16 *inVec1, /* I input vector 1 */ + const SKP_int16 *inVec2, /* I input vector 2 */ + const SKP_int len /* I vector lengths */ +); +/********************************************************************/ +/* MACROS */ + + + + + +/********************************************************************/ + +/* Define 4-byte aligned array of SKP_int16 */ +#define SKP_array_of_int16_4_byte_aligned( arrayName, nElements ) \ + SKP_int32 dummy_int32 ## arrayName; \ + SKP_int16 arrayName[ (nElements) ] + +/* Useful Macros that can be adjusted to other platforms */ +#define SKP_memcpy(a, b, c) memcpy((a), (b), (c)) /* Dest, Src, ByteCount */ +#define SKP_memset(a, b, c) memset((a), (b), (c)) /* Dest, value, ByteCount */ +#define SKP_memmove(a, b, c) memmove((a), (b), (c)) /* Dest, Src, ByteCount */ +/* fixed point macros */ + +// (a32 * b32) output have to be 32bit int +#define SKP_MUL(a32, b32) ((a32) * (b32)) + +// (a32 * b32) output have to be 32bit uint +#define SKP_MUL_uint(a32, b32) SKP_MUL(a32, b32) + +// a32 + (b32 * c32) output have to be 32bit int +#define SKP_MLA(a32, b32, c32) SKP_ADD32((a32),((b32) * (c32))) + +// a32 + (b32 * c32) output have to be 32bit uint +#define SKP_MLA_uint(a32, b32, c32) SKP_MLA(a32, b32, c32) + +// ((a32 >> 16) * (b32 >> 16)) output have to be 32bit int +#define SKP_SMULTT(a32, b32) (((a32) >> 16) * ((b32) >> 16)) + +// a32 + ((a32 >> 16) * (b32 >> 16)) output have to be 32bit int +#define SKP_SMLATT(a32, b32, c32) SKP_ADD32((a32),((b32) >> 16) * ((c32) >> 16)) + +#define SKP_SMLALBB(a64, b16, c16) SKP_ADD64((a64),(SKP_int64)((SKP_int32)(b16) * (SKP_int32)(c16))) + +// (a32 * b32) +#define SKP_SMULL(a32, b32) ((SKP_int64)(a32) * /*(SKP_int64)*/(b32)) + +// multiply-accumulate macros that allow overflow in the addition (ie, no asserts in debug mode) +#define SKP_MLA_ovflw(a32, b32, c32) SKP_MLA(a32, b32, c32) +#ifndef SKP_SMLABB_ovflw +# define SKP_SMLABB_ovflw(a32, b32, c32) SKP_SMLABB(a32, b32, c32) +#endif +#define SKP_SMLABT_ovflw(a32, b32, c32) SKP_SMLABT(a32, b32, c32) +#define SKP_SMLATT_ovflw(a32, b32, c32) SKP_SMLATT(a32, b32, c32) +#define SKP_SMLAWB_ovflw(a32, b32, c32) SKP_SMLAWB(a32, b32, c32) +#define SKP_SMLAWT_ovflw(a32, b32, c32) SKP_SMLAWT(a32, b32, c32) + +#define SKP_DIV64_32(a64, b32) ((a64)/(b32)) /* TODO: rewrite it as a set of SKP_DIV32.*/ + + + + + + +#define SKP_DIV32_16(a32, b16) ((SKP_int32)((a32) / (b16))) +#define SKP_DIV32(a32, b32) ((SKP_int32)((a32) / (b32))) + +// These macros enables checking for overflow in SKP_Silk_API_Debug.h +#define SKP_ADD16(a, b) ((a) + (b)) +#define SKP_ADD32(a, b) ((a) + (b)) +#define SKP_ADD64(a, b) ((a) + (b)) + +#define SKP_SUB16(a, b) ((a) - (b)) +#define SKP_SUB32(a, b) ((a) - (b)) +#define SKP_SUB64(a, b) ((a) - (b)) + +#define SKP_SAT8(a) ((a) > SKP_int8_MAX ? SKP_int8_MAX : \ + ((a) < SKP_int8_MIN ? SKP_int8_MIN : (a))) +#define SKP_SAT16(a) ((a) > SKP_int16_MAX ? SKP_int16_MAX : \ + ((a) < SKP_int16_MIN ? SKP_int16_MIN : (a))) +#define SKP_SAT32(a) ((a) > SKP_int32_MAX ? SKP_int32_MAX : \ + ((a) < SKP_int32_MIN ? SKP_int32_MIN : (a))) + +#define SKP_CHECK_FIT8(a) (a) +#define SKP_CHECK_FIT16(a) (a) +#define SKP_CHECK_FIT32(a) (a) + +#define SKP_ADD_SAT16(a, b) (SKP_int16)SKP_SAT16( SKP_ADD32( (SKP_int32)(a), (b) ) ) +#define SKP_ADD_SAT64(a, b) ((((a) + (b)) & 0x8000000000000000LL) == 0 ? \ + ((((a) & (b)) & 0x8000000000000000LL) != 0 ? SKP_int64_MIN : (a)+(b)) : \ + ((((a) | (b)) & 0x8000000000000000LL) == 0 ? SKP_int64_MAX : (a)+(b)) ) + +#define SKP_SUB_SAT16(a, b) (SKP_int16)SKP_SAT16( SKP_SUB32( (SKP_int32)(a), (b) ) ) +#define SKP_SUB_SAT64(a, b) ((((a)-(b)) & 0x8000000000000000LL) == 0 ? \ + (( (a) & ((b)^0x8000000000000000LL) & 0x8000000000000000LL) ? SKP_int64_MIN : (a)-(b)) : \ + ((((a)^0x8000000000000000LL) & (b) & 0x8000000000000000LL) ? SKP_int64_MAX : (a)-(b)) ) + +/* Saturation for positive input values */ +#define SKP_POS_SAT32(a) ((a) > SKP_int32_MAX ? SKP_int32_MAX : (a)) + +/* Add with saturation for positive input values */ +#define SKP_ADD_POS_SAT8(a, b) ((((a)+(b)) & 0x80) ? SKP_int8_MAX : ((a)+(b))) +#define SKP_ADD_POS_SAT16(a, b) ((((a)+(b)) & 0x8000) ? SKP_int16_MAX : ((a)+(b))) +#define SKP_ADD_POS_SAT32(a, b) ((((a)+(b)) & 0x80000000) ? SKP_int32_MAX : ((a)+(b))) +#define SKP_ADD_POS_SAT64(a, b) ((((a)+(b)) & 0x8000000000000000LL) ? SKP_int64_MAX : ((a)+(b))) + +#define SKP_LSHIFT8(a, shift) ((a)<<(shift)) // shift >= 0, shift < 8 +#define SKP_LSHIFT16(a, shift) ((a)<<(shift)) // shift >= 0, shift < 16 +#define SKP_LSHIFT32(a, shift) ((a)<<(shift)) // shift >= 0, shift < 32 +#define SKP_LSHIFT64(a, shift) ((a)<<(shift)) // shift >= 0, shift < 64 +#define SKP_LSHIFT(a, shift) SKP_LSHIFT32(a, shift) // shift >= 0, shift < 32 + + + + + + +#define SKP_RSHIFT8(a, shift) ((a)>>(shift)) // shift >= 0, shift < 8 +#define SKP_RSHIFT16(a, shift) ((a)>>(shift)) // shift >= 0, shift < 16 +#define SKP_RSHIFT32(a, shift) ((a)>>(shift)) // shift >= 0, shift < 32 +#define SKP_RSHIFT64(a, shift) ((a)>>(shift)) // shift >= 0, shift < 64 +#define SKP_RSHIFT(a, shift) SKP_RSHIFT32(a, shift) // shift >= 0, shift < 32 + +/* saturates before shifting */ +#define SKP_LSHIFT_SAT16(a, shift) (SKP_LSHIFT16( SKP_LIMIT( (a), SKP_RSHIFT16( SKP_int16_MIN, (shift) ), \ + SKP_RSHIFT16( SKP_int16_MAX, (shift) ) ), (shift) )) +#define SKP_LSHIFT_SAT32(a, shift) (SKP_LSHIFT32( SKP_LIMIT( (a), SKP_RSHIFT32( SKP_int32_MIN, (shift) ), \ + SKP_RSHIFT32( SKP_int32_MAX, (shift) ) ), (shift) )) + +#define SKP_LSHIFT_ovflw(a, shift) ((a)<<(shift)) // shift >= 0, allowed to overflow +#define SKP_LSHIFT_uint(a, shift) ((a)<<(shift)) // shift >= 0 +#define SKP_RSHIFT_uint(a, shift) ((a)>>(shift)) // shift >= 0 + +#define SKP_ADD_LSHIFT(a, b, shift) ((a) + SKP_LSHIFT((b), (shift))) // shift >= 0 +#define SKP_ADD_LSHIFT32(a, b, shift) SKP_ADD32((a), SKP_LSHIFT32((b), (shift))) // shift >= 0 +#define SKP_ADD_LSHIFT_uint(a, b, shift) ((a) + SKP_LSHIFT_uint((b), (shift))) // shift >= 0 +#define SKP_ADD_RSHIFT(a, b, shift) ((a) + SKP_RSHIFT((b), (shift))) // shift >= 0 +#define SKP_ADD_RSHIFT32(a, b, shift) SKP_ADD32((a), SKP_RSHIFT32((b), (shift))) // shift >= 0 +#define SKP_ADD_RSHIFT_uint(a, b, shift) ((a) + SKP_RSHIFT_uint((b), (shift))) // shift >= 0 +#define SKP_SUB_LSHIFT32(a, b, shift) SKP_SUB32((a), SKP_LSHIFT32((b), (shift))) // shift >= 0 +#define SKP_SUB_RSHIFT32(a, b, shift) SKP_SUB32((a), SKP_RSHIFT32((b), (shift))) // shift >= 0 + +/* Requires that shift > 0 */ +#define SKP_RSHIFT_ROUND(a, shift) ((shift) == 1 ? ((a) >> 1) + ((a) & 1) : (((a) >> ((shift) - 1)) + 1) >> 1) +#define SKP_RSHIFT_ROUND64(a, shift) ((shift) == 1 ? ((a) >> 1) + ((a) & 1) : (((a) >> ((shift) - 1)) + 1) >> 1) + +/* Number of rightshift required to fit the multiplication */ +#define SKP_NSHIFT_MUL_32_32(a, b) ( -(31- (32-SKP_Silk_CLZ32(SKP_abs(a)) + (32-SKP_Silk_CLZ32(SKP_abs(b))))) ) +#define SKP_NSHIFT_MUL_16_16(a, b) ( -(15- (16-SKP_Silk_CLZ16(SKP_abs(a)) + (16-SKP_Silk_CLZ16(SKP_abs(b))))) ) + + +#define SKP_min(a, b) (((a) < (b)) ? (a) : (b)) +#define SKP_max(a, b) (((a) > (b)) ? (a) : (b)) + +/* Macro to convert floating-point constants to fixed-point */ +#define SKP_FIX_CONST( C, Q ) ((SKP_int32)((C) * (1 << (Q)) + 0.5)) + +/* SKP_min() versions with typecast in the function call */ +SKP_INLINE SKP_int SKP_min_int(SKP_int a, SKP_int b) +{ + return (((a) < (b)) ? (a) : (b)); +} +SKP_INLINE SKP_int16 SKP_min_16(SKP_int16 a, SKP_int16 b) +{ + return (((a) < (b)) ? (a) : (b)); + + + + + +} +SKP_INLINE SKP_int32 SKP_min_32(SKP_int32 a, SKP_int32 b) +{ + return (((a) < (b)) ? (a) : (b)); +} +SKP_INLINE SKP_int64 SKP_min_64(SKP_int64 a, SKP_int64 b) +{ + return (((a) < (b)) ? (a) : (b)); +} + +/* SKP_min() versions with typecast in the function call */ +SKP_INLINE SKP_int SKP_max_int(SKP_int a, SKP_int b) +{ + return (((a) > (b)) ? (a) : (b)); +} +SKP_INLINE SKP_int16 SKP_max_16(SKP_int16 a, SKP_int16 b) +{ + return (((a) > (b)) ? (a) : (b)); +} +SKP_INLINE SKP_int32 SKP_max_32(SKP_int32 a, SKP_int32 b) +{ + return (((a) > (b)) ? (a) : (b)); +} +SKP_INLINE SKP_int64 SKP_max_64(SKP_int64 a, SKP_int64 b) +{ + return (((a) > (b)) ? (a) : (b)); +} + +#define SKP_LIMIT( a, limit1, limit2) ((limit1) > (limit2) ? ((a) > (limit1) ? (limit1) : ((a) < (limit2) ? (limit2) : (a))) \ + : ((a) > (limit2) ? (limit2) : ((a) < (limit1) ? (limit1) : (a)))) + +//#define SKP_non_neg(a) ((a) & ((-(a)) >> (8 * sizeof(a) - 1))) /* doesn't seem faster than SKP_max(0, a); + +#define SKP_abs(a) (((a) > 0) ? (a) : -(a)) // Be careful, SKP_abs returns wrong when input equals to SKP_intXX_MIN +#define SKP_abs_int(a) (((a) ^ ((a) >> (8 * sizeof(a) - 1))) - ((a) >> (8 * sizeof(a) - 1))) +#define SKP_abs_int32(a) (((a) ^ ((a) >> 31)) - ((a) >> 31)) +#define SKP_abs_int64(a) (((a) > 0) ? (a) : -(a)) + +#define SKP_sign(a) ((a) > 0 ? 1 : ( (a) < 0 ? -1 : 0 )) + +#define SKP_sqrt(a) (sqrt(a)) + +/* PSEUDO-RANDOM GENERATOR */ +/* Make sure to store the result as the seed for the next call (also in between */ +/* frames), otherwise result won't be random at all. When only using some of the */ +/* bits, take the most significant bits by right-shifting. Do not just mask off */ +/* the lowest bits. */ +#define SKP_RAND(seed) (SKP_MLA_ovflw(907633515, (seed), 196314165)) + + + + + +// Add some multiplication functions that can be easily mapped to ARM. + +// SKP_SMMUL: Signed top word multiply. +// ARMv6 2 instruction cycles. +// ARMv3M+ 3 instruction cycles. use SMULL and ignore LSB registers.(except xM) +//#define SKP_SMMUL(a32, b32) (SKP_int32)SKP_RSHIFT(SKP_SMLAL(SKP_SMULWB((a32), (b32)), (a32), SKP_RSHIFT_ROUND((b32), 16)), 16) +// the following seems faster on x86 +#define SKP_SMMUL(a32, b32) (SKP_int32)SKP_RSHIFT64(SKP_SMULL((a32), (b32)), 32) + +#include "SKP_Silk_Inlines.h" + +#ifdef __cplusplus +} +#endif + +#endif //_SKP_SILK_H_ + + diff --git a/libs/silk/src/SKP_Silk_VAD.c b/libs/silk/src/SKP_Silk_VAD.c new file mode 100644 index 0000000000..78b72e64ed --- /dev/null +++ b/libs/silk/src/SKP_Silk_VAD.c @@ -0,0 +1,360 @@ + + +/*********************************************************************** + +Copyright (c) 2006-2010, Skype Limited. All rights reserved. +Redistribution and use in source and binary forms, with or without +modification, (subject to the limitations in the disclaimer below) +are permitted provided that the following conditions are met: +- Redistributions of source code must retain the above copyright notice, +this list of conditions and the following disclaimer. +- Redistributions in binary form must reproduce the above copyright +notice, this list of conditions and the following disclaimer in the +documentation and/or other materials provided with the distribution. +- Neither the name of Skype Limited, nor the names of specific +contributors, may be used to endorse or promote products derived from +this software without specific prior written permission. +NO EXPRESS OR IMPLIED LICENSES TO ANY PARTY'S PATENT RIGHTS ARE GRANTED +BY THIS LICENSE.THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND +CONTRIBUTORS ''AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, +BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND +FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE +COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, +INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT +NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF +USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON +ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT +(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE +OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + + + + + + +***********************************************************************/ + +/* + * File Name: SKP_Silk_VAD.c + * Description: Silk VAD. + */ + +#include +#include "SKP_Silk_main.h" + +/**********************************/ +/* Initialization of the Silk VAD */ +/**********************************/ +SKP_int SKP_Silk_VAD_Init( /* O Return value, 0 if success */ + SKP_Silk_VAD_state *psSilk_VAD /* I/O Pointer to Silk VAD state */ +) +{ + SKP_int b, ret = 0; + + /* reset state memory */ + SKP_memset( psSilk_VAD, 0, sizeof( SKP_Silk_VAD_state ) ); + + /* init noise levels */ + /* Initialize array with approx pink noise levels (psd proportional to inverse of frequency) */ + for( b = 0; b < VAD_N_BANDS; b++ ) { + psSilk_VAD->NoiseLevelBias[ b ] = SKP_max_32( SKP_DIV32_16( VAD_NOISE_LEVELS_BIAS, b + 1 ), 1 ); + } + + /* Initialize state */ + for( b = 0; b < VAD_N_BANDS; b++ ) { + psSilk_VAD->NL[ b ] = SKP_MUL( 100, psSilk_VAD->NoiseLevelBias[ b ] ); + psSilk_VAD->inv_NL[ b ] = SKP_DIV32( SKP_int32_MAX, psSilk_VAD->NL[ b ] ); + } + psSilk_VAD->counter = 15; + + /* init smoothed energy-to-noise ratio*/ + for( b = 0; b < VAD_N_BANDS; b++ ) { + psSilk_VAD->NrgRatioSmth_Q8[ b ] = 100 * 256; /* 100 * 256 --> 20 dB SNR */ + } + + return( ret ); +} + +/* Weighting factors for tilt measure */ +const static SKP_int32 tiltWeights[ VAD_N_BANDS ] = { 30000, 6000, -12000, -12000 }; + +/***************************************/ +/* Get the speech activity level in Q8 */ + + + + + +/***************************************/ +SKP_int SKP_Silk_VAD_GetSA_Q8( /* O Return value, 0 if success */ + SKP_Silk_VAD_state *psSilk_VAD, /* I/O Silk VAD state */ + SKP_int *pSA_Q8, /* O Speech activity level in Q8 */ + SKP_int *pSNR_dB_Q7, /* O SNR for current frame in Q7 */ + SKP_int pQuality_Q15[ VAD_N_BANDS ], /* O Smoothed SNR for each band */ + SKP_int *pTilt_Q15, /* O current frame's frequency tilt */ + const SKP_int16 pIn[], /* I PCM input [framelength] */ + const SKP_int framelength /* I Input frame length */ +) +{ + SKP_int SA_Q15, input_tilt; + SKP_int32 scratch[ 3 * MAX_FRAME_LENGTH / 2 ]; + SKP_int decimated_framelength, dec_subframe_length, dec_subframe_offset, SNR_Q7, i, b, s; + SKP_int32 sumSquared, smooth_coef_Q16; + SKP_int16 HPstateTmp; + + SKP_int16 X[ VAD_N_BANDS ][ MAX_FRAME_LENGTH / 2 ]; + SKP_int32 Xnrg[ VAD_N_BANDS ]; + SKP_int32 NrgToNoiseRatio_Q8[ VAD_N_BANDS ]; + SKP_int32 speech_nrg, x_tmp; + SKP_int ret = 0; + + /* Safety checks */ + SKP_assert( VAD_N_BANDS == 4 ); + SKP_assert( MAX_FRAME_LENGTH >= framelength ); + SKP_assert( framelength <= 512 ); + + /***********************/ + /* Filter and Decimate */ + /***********************/ + /* 0-8 kHz to 0-4 kHz and 4-8 kHz */ + SKP_Silk_ana_filt_bank_1( pIn, &psSilk_VAD->AnaState[ 0 ], &X[ 0 ][ 0 ], &X[ 3 ][ 0 ], &scratch[ 0 ], framelength ); + + /* 0-4 kHz to 0-2 kHz and 2-4 kHz */ + SKP_Silk_ana_filt_bank_1( &X[ 0 ][ 0 ], &psSilk_VAD->AnaState1[ 0 ], &X[ 0 ][ 0 ], &X[ 2 ][ 0 ], &scratch[ 0 ], SKP_RSHIFT( framelength, 1 ) ); + + /* 0-2 kHz to 0-1 kHz and 1-2 kHz */ + SKP_Silk_ana_filt_bank_1( &X[ 0 ][ 0 ], &psSilk_VAD->AnaState2[ 0 ], &X[ 0 ][ 0 ], &X[ 1 ][ 0 ], &scratch[ 0 ], SKP_RSHIFT( framelength, 2 ) ); + + /*********************************************/ + /* HP filter on lowest band (differentiator) */ + /*********************************************/ + decimated_framelength = SKP_RSHIFT( framelength, 3 ); + X[ 0 ][ decimated_framelength - 1 ] = SKP_RSHIFT( X[ 0 ][ decimated_framelength - 1 ], 1 ); + HPstateTmp = X[ 0 ][ decimated_framelength - 1 ]; + for( i = decimated_framelength - 1; i > 0; i-- ) { + X[ 0 ][ i - 1 ] = SKP_RSHIFT( X[ 0 ][ i - 1 ], 1 ); + + + + + + X[ 0 ][ i ] -= X[ 0 ][ i - 1 ]; + } + X[ 0 ][ 0 ] -= psSilk_VAD->HPstate; + psSilk_VAD->HPstate = HPstateTmp; + + /*************************************/ + /* Calculate the energy in each band */ + /*************************************/ + for( b = 0; b < VAD_N_BANDS; b++ ) { + /* Find the decimated framelength in the non-uniformly divided bands */ + decimated_framelength = SKP_RSHIFT( framelength, SKP_min_int( VAD_N_BANDS - b, VAD_N_BANDS - 1 ) ); + + /* Split length into subframe lengths */ + dec_subframe_length = SKP_RSHIFT( decimated_framelength, VAD_INTERNAL_SUBFRAMES_LOG2 ); + dec_subframe_offset = 0; + + /* Compute energy per sub-frame */ + /* initialize with summed energy of last subframe */ + Xnrg[ b ] = psSilk_VAD->XnrgSubfr[ b ]; + for( s = 0; s < VAD_INTERNAL_SUBFRAMES; s++ ) { + sumSquared = 0; + for( i = 0; i < dec_subframe_length; i++ ) { + /* The energy will be less than dec_subframe_length * ( SKP_int16_MIN / 8 )^2. */ + /* Therefore we can accumulate with no risk of overflow (unless dec_subframe_length > 128) */ + x_tmp = SKP_RSHIFT( X[ b ][ i + dec_subframe_offset ], 3 ); + sumSquared = SKP_SMLABB( sumSquared, x_tmp, x_tmp ); + + /* Safety check */ + SKP_assert( sumSquared >= 0 ); + } + + /* add/saturate summed energy of current subframe */ + if( s < VAD_INTERNAL_SUBFRAMES - 1 ) { + Xnrg[ b ] = SKP_ADD_POS_SAT32( Xnrg[ b ], sumSquared ); + } else { + /* look-ahead subframe */ + Xnrg[ b ] = SKP_ADD_POS_SAT32( Xnrg[ b ], SKP_RSHIFT( sumSquared, 1 ) ); + } + + dec_subframe_offset += dec_subframe_length; + } + psSilk_VAD->XnrgSubfr[ b ] = sumSquared; + } + + /********************/ + /* Noise estimation */ + /********************/ + SKP_Silk_VAD_GetNoiseLevels( &Xnrg[ 0 ], psSilk_VAD ); + + + + + + /***********************************************/ + /* Signal-plus-noise to noise ratio estimation */ + /***********************************************/ + sumSquared = 0; + input_tilt = 0; + for( b = 0; b < VAD_N_BANDS; b++ ) { + speech_nrg = Xnrg[ b ] - psSilk_VAD->NL[ b ]; + if( speech_nrg > 0 ) { + /* Divide, with sufficient resolution */ + if( ( Xnrg[ b ] & 0xFF800000 ) == 0 ) { + NrgToNoiseRatio_Q8[ b ] = SKP_DIV32( SKP_LSHIFT( Xnrg[ b ], 8 ), psSilk_VAD->NL[ b ] + 1 ); + } else { + NrgToNoiseRatio_Q8[ b ] = SKP_DIV32( Xnrg[ b ], SKP_RSHIFT( psSilk_VAD->NL[ b ], 8 ) + 1 ); + } + + /* Convert to log domain */ + SNR_Q7 = SKP_Silk_lin2log( NrgToNoiseRatio_Q8[ b ] ) - 8 * 128; + + /* Sum-of-squares */ + sumSquared = SKP_SMLABB( sumSquared, SNR_Q7, SNR_Q7 ); /* Q14 */ + + /* Tilt measure */ + if( speech_nrg < ( 1 << 20 ) ) { + /* Scale down SNR value for small subband speech energies */ + SNR_Q7 = SKP_SMULWB( SKP_LSHIFT( SKP_Silk_SQRT_APPROX( speech_nrg ), 6 ), SNR_Q7 ); + } + input_tilt = SKP_SMLAWB( input_tilt, tiltWeights[ b ], SNR_Q7 ); + } else { + NrgToNoiseRatio_Q8[ b ] = 256; + } + } + + /* Mean-of-squares */ + sumSquared = SKP_DIV32_16( sumSquared, VAD_N_BANDS ); /* Q14 */ + + /* Root-mean-square approximation, scale to dBs, and write to output pointer */ + *pSNR_dB_Q7 = (SKP_int16)( 3 * SKP_Silk_SQRT_APPROX( sumSquared ) ); /* Q7 */ + + /*********************************/ + /* Speech Probability Estimation */ + /*********************************/ + SA_Q15 = SKP_Silk_sigm_Q15( SKP_SMULWB( VAD_SNR_FACTOR_Q16, *pSNR_dB_Q7 ) - VAD_NEGATIVE_OFFSET_Q5 ); + + /**************************/ + /* Frequency Tilt Measure */ + /**************************/ + *pTilt_Q15 = SKP_LSHIFT( SKP_Silk_sigm_Q15( input_tilt ) - 16384, 1 ); + + + + + + + /**************************************************/ + /* Scale the sigmoid output based on power levels */ + /**************************************************/ + speech_nrg = 0; + for( b = 0; b < VAD_N_BANDS; b++ ) { + /* Accumulate signal-without-noise energies, higher frequency bands have more weight */ + speech_nrg += ( b + 1 ) * SKP_RSHIFT( Xnrg[ b ] - psSilk_VAD->NL[ b ], 4 ); + } + + /* Power scaling */ + if( speech_nrg <= 0 ) { + SA_Q15 = SKP_RSHIFT( SA_Q15, 1 ); + } else if( speech_nrg < 32768 ) { + /* square-root */ + speech_nrg = SKP_Silk_SQRT_APPROX( SKP_LSHIFT( speech_nrg, 15 ) ); + SA_Q15 = SKP_SMULWB( 32768 + speech_nrg, SA_Q15 ); + } + + /* Copy the resulting speech activity in Q8 to *pSA_Q8 */ + *pSA_Q8 = SKP_min_int( SKP_RSHIFT( SA_Q15, 7 ), SKP_uint8_MAX ); + + /***********************************/ + /* Energy Level and SNR estimation */ + /***********************************/ + /* smoothing coefficient */ + smooth_coef_Q16 = SKP_SMULWB( VAD_SNR_SMOOTH_COEF_Q18, SKP_SMULWB( SA_Q15, SA_Q15 ) ); + for( b = 0; b < VAD_N_BANDS; b++ ) { + /* compute smoothed energy-to-noise ratio per band */ + psSilk_VAD->NrgRatioSmth_Q8[ b ] = SKP_SMLAWB( psSilk_VAD->NrgRatioSmth_Q8[ b ], + NrgToNoiseRatio_Q8[ b ] - psSilk_VAD->NrgRatioSmth_Q8[ b ], smooth_coef_Q16 ); + + /* signal to noise ratio in dB per band */ + SNR_Q7 = 3 * ( SKP_Silk_lin2log( psSilk_VAD->NrgRatioSmth_Q8[b] ) - 8 * 128 ); + /* quality = sigmoid( 0.25 * ( SNR_dB - 16 ) ); */ + pQuality_Q15[ b ] = SKP_Silk_sigm_Q15( SKP_RSHIFT( SNR_Q7 - 16 * 128, 4 ) ); + } + + return( ret ); +} + +/**************************/ +/* Noise level estimation */ +/**************************/ +void SKP_Silk_VAD_GetNoiseLevels( + const SKP_int32 pX[ VAD_N_BANDS ], /* I subband energies */ + SKP_Silk_VAD_state *psSilk_VAD /* I/O Pointer to Silk VAD state */ +) +{ + + + + + + SKP_int k; + SKP_int32 nl, nrg, inv_nrg; + SKP_int coef, min_coef; + + /* Initially faster smoothing */ + if( psSilk_VAD->counter < 1000 ) { /* 1000 = 20 sec */ + min_coef = SKP_DIV32_16( SKP_int16_MAX, SKP_RSHIFT( psSilk_VAD->counter, 4 ) + 1 ); + } else { + min_coef = 0; + } + + for( k = 0; k < VAD_N_BANDS; k++ ) { + /* Get old noise level estimate for current band */ + nl = psSilk_VAD->NL[ k ]; + SKP_assert( nl >= 0 ); + + /* Add bias */ + nrg = SKP_ADD_POS_SAT32( pX[ k ], psSilk_VAD->NoiseLevelBias[ k ] ); + SKP_assert( nrg > 0 ); + + /* Invert energies */ + inv_nrg = SKP_DIV32( SKP_int32_MAX, nrg ); + SKP_assert( inv_nrg >= 0 ); + + /* Less update when subband energy is high */ + if( nrg > SKP_LSHIFT( nl, 3 ) ) { + coef = VAD_NOISE_LEVEL_SMOOTH_COEF_Q16 >> 3; + } else if( nrg < nl ) { + coef = VAD_NOISE_LEVEL_SMOOTH_COEF_Q16; + } else { + coef = SKP_SMULWB( SKP_SMULWW( inv_nrg, nl ), VAD_NOISE_LEVEL_SMOOTH_COEF_Q16 << 1 ); + } + + /* Initially faster smoothing */ + coef = SKP_max_int( coef, min_coef ); + + /* Smooth inverse energies */ + psSilk_VAD->inv_NL[ k ] = SKP_SMLAWB( psSilk_VAD->inv_NL[ k ], inv_nrg - psSilk_VAD->inv_NL[ k ], coef ); + SKP_assert( psSilk_VAD->inv_NL[ k ] >= 0 ); + + /* Compute noise level by inverting again */ + nl = SKP_DIV32( SKP_int32_MAX, psSilk_VAD->inv_NL[ k ] ); + SKP_assert( nl >= 0 ); + + /* Limit noise levels (guarantee 7 bits of head room) */ + nl = SKP_min( nl, 0x00FFFFFF ); + + /* Store as part of state */ + + + + + + psSilk_VAD->NL[ k ] = nl; + } + + /* Increment frame counter */ + psSilk_VAD->counter++; +} + + diff --git a/libs/silk/src/SKP_Silk_VQ_nearest_neighbor_FIX.c b/libs/silk/src/SKP_Silk_VQ_nearest_neighbor_FIX.c new file mode 100644 index 0000000000..f511b4b391 --- /dev/null +++ b/libs/silk/src/SKP_Silk_VQ_nearest_neighbor_FIX.c @@ -0,0 +1,126 @@ + + +/*********************************************************************** + +Copyright (c) 2006-2010, Skype Limited. All rights reserved. +Redistribution and use in source and binary forms, with or without +modification, (subject to the limitations in the disclaimer below) +are permitted provided that the following conditions are met: +- Redistributions of source code must retain the above copyright notice, +this list of conditions and the following disclaimer. +- Redistributions in binary form must reproduce the above copyright +notice, this list of conditions and the following disclaimer in the +documentation and/or other materials provided with the distribution. +- Neither the name of Skype Limited, nor the names of specific +contributors, may be used to endorse or promote products derived from +this software without specific prior written permission. +NO EXPRESS OR IMPLIED LICENSES TO ANY PARTY'S PATENT RIGHTS ARE GRANTED +BY THIS LICENSE.THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND +CONTRIBUTORS ''AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, +BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND +FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE +COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, +INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT +NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF +USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON +ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT +(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE +OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + +***********************************************************************/ + +#include "SKP_Silk_main_FIX.h" + +/* Entropy constrained MATRIX-weighted VQ, hard-coded to 5-element vectors, for a single input data vector */ +void SKP_Silk_VQ_WMat_EC_FIX( + SKP_int *ind, /* O index of best codebook vector */ + SKP_int32 *rate_dist_Q14, /* O best weighted quantization error + mu * rate*/ + const SKP_int16 *in_Q14, /* I input vector to be quantized */ + const SKP_int32 *W_Q18, /* I weighting matrix */ + + + + + + const SKP_int16 *cb_Q14, /* I codebook */ + const SKP_int16 *cl_Q6, /* I code length for each codebook vector */ + const SKP_int mu_Q8, /* I tradeoff between weighted error and rate */ + SKP_int L /* I number of vectors in codebook */ +) +{ + SKP_int k; + const SKP_int16 *cb_row_Q14; + SKP_int32 sum1_Q14, sum2_Q16, diff_Q14_01, diff_Q14_23, diff_Q14_4; + + /* Loop over codebook */ + *rate_dist_Q14 = SKP_int32_MAX; + cb_row_Q14 = cb_Q14; + for( k = 0; k < L; k++ ) { + /* Pack pairs of int16 values per int32 */ + diff_Q14_01 = (SKP_uint16)( in_Q14[ 0 ] - cb_row_Q14[ 0 ] ) | SKP_LSHIFT( (SKP_int32)in_Q14[ 1 ] - cb_row_Q14[ 1 ], 16 ); + diff_Q14_23 = (SKP_uint16)( in_Q14[ 2 ] - cb_row_Q14[ 2 ] ) | SKP_LSHIFT( (SKP_int32)in_Q14[ 3 ] - cb_row_Q14[ 3 ], 16 ); + diff_Q14_4 = in_Q14[ 4 ] - cb_row_Q14[ 4 ]; + + /* Weighted rate */ + sum1_Q14 = SKP_SMULBB( mu_Q8, cl_Q6[ k ] ); + + SKP_assert( sum1_Q14 >= 0 ); + + /* Add weighted quantization error, assuming W_Q18 is symmetric */ + /* NOTE: the code below loads two int16 values as one int32, and multiplies each using the */ + /* SMLAWB and SMLAWT instructions. On a big-endian CPU the two int16 variables would be */ + /* loaded in reverse order and the code will give the wrong result. In that case swapping */ + /* the SMLAWB and SMLAWT instructions should solve the problem. */ + /* first row of W_Q18 */ + sum2_Q16 = SKP_SMULWT( W_Q18[ 1 ], diff_Q14_01 ); + sum2_Q16 = SKP_SMLAWB( sum2_Q16, W_Q18[ 2 ], diff_Q14_23 ); + sum2_Q16 = SKP_SMLAWT( sum2_Q16, W_Q18[ 3 ], diff_Q14_23 ); + sum2_Q16 = SKP_SMLAWB( sum2_Q16, W_Q18[ 4 ], diff_Q14_4 ); + sum2_Q16 = SKP_LSHIFT( sum2_Q16, 1 ); + sum2_Q16 = SKP_SMLAWB( sum2_Q16, W_Q18[ 0 ], diff_Q14_01 ); + sum1_Q14 = SKP_SMLAWB( sum1_Q14, sum2_Q16, diff_Q14_01 ); + + /* second row of W_Q18 */ + sum2_Q16 = SKP_SMULWB( W_Q18[ 7 ], diff_Q14_23 ); + sum2_Q16 = SKP_SMLAWT( sum2_Q16, W_Q18[ 8 ], diff_Q14_23 ); + sum2_Q16 = SKP_SMLAWB( sum2_Q16, W_Q18[ 9 ], diff_Q14_4 ); + sum2_Q16 = SKP_LSHIFT( sum2_Q16, 1 ); + sum2_Q16 = SKP_SMLAWT( sum2_Q16, W_Q18[ 6 ], diff_Q14_01 ); + sum1_Q14 = SKP_SMLAWT( sum1_Q14, sum2_Q16, diff_Q14_01 ); + + /* third row of W_Q18 */ + sum2_Q16 = SKP_SMULWT( W_Q18[ 13 ], diff_Q14_23 ); + + + + + + sum2_Q16 = SKP_SMLAWB( sum2_Q16, W_Q18[ 14 ], diff_Q14_4 ); + sum2_Q16 = SKP_LSHIFT( sum2_Q16, 1 ); + sum2_Q16 = SKP_SMLAWB( sum2_Q16, W_Q18[ 12 ], diff_Q14_23 ); + sum1_Q14 = SKP_SMLAWB( sum1_Q14, sum2_Q16, diff_Q14_23 ); + + /* fourth row of W_Q18 */ + sum2_Q16 = SKP_SMULWB( W_Q18[ 19 ], diff_Q14_4 ); + sum2_Q16 = SKP_LSHIFT( sum2_Q16, 1 ); + sum2_Q16 = SKP_SMLAWT( sum2_Q16, W_Q18[ 18 ], diff_Q14_23 ); + sum1_Q14 = SKP_SMLAWT( sum1_Q14, sum2_Q16, diff_Q14_23 ); + + /* last row of W_Q18 */ + sum2_Q16 = SKP_SMULWB( W_Q18[ 24 ], diff_Q14_4 ); + sum1_Q14 = SKP_SMLAWB( sum1_Q14, sum2_Q16, diff_Q14_4 ); + + SKP_assert( sum1_Q14 >= 0 ); + + /* find best */ + if( sum1_Q14 < *rate_dist_Q14 ) { + *rate_dist_Q14 = sum1_Q14; + *ind = k; + } + + /* Go to next cbk vector */ + cb_row_Q14 += LTP_ORDER; + } +} + + diff --git a/libs/silk/src/SKP_Silk_allpass_int.c b/libs/silk/src/SKP_Silk_allpass_int.c new file mode 100644 index 0000000000..4b0fed25fa --- /dev/null +++ b/libs/silk/src/SKP_Silk_allpass_int.c @@ -0,0 +1,84 @@ + + +/*********************************************************************** + + + + + +Copyright (c) 2006-2010, Skype Limited. All rights reserved. +Redistribution and use in source and binary forms, with or without +modification, (subject to the limitations in the disclaimer below) +are permitted provided that the following conditions are met: +- Redistributions of source code must retain the above copyright notice, +this list of conditions and the following disclaimer. +- Redistributions in binary form must reproduce the above copyright +notice, this list of conditions and the following disclaimer in the +documentation and/or other materials provided with the distribution. +- Neither the name of Skype Limited, nor the names of specific +contributors, may be used to endorse or promote products derived from +this software without specific prior written permission. +NO EXPRESS OR IMPLIED LICENSES TO ANY PARTY'S PATENT RIGHTS ARE GRANTED +BY THIS LICENSE.THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND +CONTRIBUTORS ''AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, +BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND +FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE +COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, +INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT +NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF +USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON +ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT +(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE +OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + +***********************************************************************/ + +/* * + * SKP_Silk_allpass_int.c * + * * + * First-order allpass filter with * + * transfer function: * + * * + * A + Z^(-1) * + * H(z) = ------------ * + * 1 + A*Z^(-1) * + * * + * Implemented using minimum multiplier filter design. * + * * + * Reference: http://www.univ.trieste.it/~ramponi/teaching/ * + * DSP/materiale/Ch6(2).pdf * + * * + * Copyright 2007 (c), Skype Limited * + * Date: 070525 * + * */ +#include "SKP_Silk_SigProc_FIX.h" + + + + + + + +/* First-order allpass filter */ +void SKP_Silk_allpass_int( + const SKP_int32 *in, /* I: Q25 input signal [len] */ + SKP_int32 *S, /* I/O: Q25 state [1] */ + SKP_int A, /* I: Q15 coefficient (0 <= A < 32768) */ + SKP_int32 *out, /* O: Q25 output signal [len] */ + const SKP_int32 len /* I: Number of samples */ +) +{ + SKP_int32 Y2, X2, S0; + SKP_int k; + + S0 = S[ 0 ]; + for( k = len - 1; k >= 0; k-- ) { + Y2 = *in - S0; + X2 = ( Y2 >> 15 ) * A + ( ( ( Y2 & 0x00007FFF ) * A ) >> 15 ); + ( *out++ ) = S0 + X2; + S0 = ( *in++ ) + X2; + } + S[ 0 ] = S0; +} + + diff --git a/libs/silk/src/SKP_Silk_ana_filt_bank_1.c b/libs/silk/src/SKP_Silk_ana_filt_bank_1.c new file mode 100644 index 0000000000..d366337c39 --- /dev/null +++ b/libs/silk/src/SKP_Silk_ana_filt_bank_1.c @@ -0,0 +1,88 @@ + + +/*********************************************************************** + +Copyright (c) 2006-2010, Skype Limited. All rights reserved. +Redistribution and use in source and binary forms, with or without +modification, (subject to the limitations in the disclaimer below) +are permitted provided that the following conditions are met: +- Redistributions of source code must retain the above copyright notice, +this list of conditions and the following disclaimer. +- Redistributions in binary form must reproduce the above copyright +notice, this list of conditions and the following disclaimer in the +documentation and/or other materials provided with the distribution. +- Neither the name of Skype Limited, nor the names of specific +contributors, may be used to endorse or promote products derived from +this software without specific prior written permission. +NO EXPRESS OR IMPLIED LICENSES TO ANY PARTY'S PATENT RIGHTS ARE GRANTED +BY THIS LICENSE.THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND +CONTRIBUTORS ''AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, +BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND +FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE +COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, +INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT +NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF + + + + + +USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON +ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT +(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE +OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + +***********************************************************************/ + +/* * + * SKP_ana_filt_bank_1.c * + * * + * Split signal into two decimated bands using first-order allpass filters * + * * + * Copyright 2006 (c), Skype Limited * + * Date: 060221 * + * */ +#include "SKP_Silk_SigProc_FIX.h" + +/* Coefficients for 2-band filter bank based on first-order allpass filters */ +static SKP_int16 A_fb1_20[ 1 ] = { 5394 }; +static SKP_int16 A_fb1_21[ 1 ] = { 20623 }; + +/* Split signal into two decimated bands using first-order allpass filters */ +void SKP_Silk_ana_filt_bank_1( + const SKP_int16 *in, /* I: Input signal [N] */ + SKP_int32 *S, /* I/O: State vector [2] */ + SKP_int16 *outL, /* O: Low band [N/2] */ + SKP_int16 *outH, /* O: High band [N/2] */ + SKP_int32 *scratch, /* I: Scratch memory [3*N/2] */ + const SKP_int32 N /* I: Number of input samples */ +) +{ + SKP_int k, N2 = SKP_RSHIFT( N, 1 ); + SKP_int32 out_tmp; + + /* De-interleave three allpass inputs, and convert Q15 -> Q25 */ + for( k = 0; k < N2; k++ ) { + scratch[ k + N ] = SKP_LSHIFT( (SKP_int32)in[ 2 * k ], 10 ); + scratch[ k + N2 ] = SKP_LSHIFT( (SKP_int32)in[ 2 * k + 1 ], 10 ); + } + + /* Allpass filters */ + SKP_Silk_allpass_int( scratch + N2, S+0, A_fb1_20[ 0 ], scratch, N2 ); + SKP_Silk_allpass_int( scratch + N, S+1, A_fb1_21[ 0 ], scratch + N2, N2 ); + + /* Add and subtract two allpass outputs to create bands */ + for( k = 0; k < N2; k++ ) { + out_tmp = scratch[ k ] + scratch[ k + N2 ]; + outL[ k ] = (SKP_int16)SKP_SAT16( SKP_RSHIFT_ROUND( out_tmp, 11 ) ); + + + + + + out_tmp = scratch[ k ] - scratch[ k + N2 ]; + outH[ k ] = (SKP_int16)SKP_SAT16( SKP_RSHIFT_ROUND( out_tmp, 11 ) ); + } +} + + diff --git a/libs/silk/src/SKP_Silk_apply_sine_window.c b/libs/silk/src/SKP_Silk_apply_sine_window.c new file mode 100644 index 0000000000..bf7ce16ecd --- /dev/null +++ b/libs/silk/src/SKP_Silk_apply_sine_window.c @@ -0,0 +1,108 @@ + + +/*********************************************************************** + +Copyright (c) 2006-2010, Skype Limited. All rights reserved. +Redistribution and use in source and binary forms, with or without +modification, (subject to the limitations in the disclaimer below) +are permitted provided that the following conditions are met: +- Redistributions of source code must retain the above copyright notice, +this list of conditions and the following disclaimer. +- Redistributions in binary form must reproduce the above copyright +notice, this list of conditions and the following disclaimer in the +documentation and/or other materials provided with the distribution. +- Neither the name of Skype Limited, nor the names of specific +contributors, may be used to endorse or promote products derived from +this software without specific prior written permission. +NO EXPRESS OR IMPLIED LICENSES TO ANY PARTY'S PATENT RIGHTS ARE GRANTED +BY THIS LICENSE.THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND +CONTRIBUTORS ''AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, +BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND +FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE +COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, +INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT +NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF +USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON +ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT +(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE +OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + +***********************************************************************/ + +#include "SKP_Silk_SigProc_FIX.h" + +/* Apply sine window to signal vector. */ +/* Window types: */ +/* 0 -> sine window from 0 to pi */ +/* 1 -> sine window from 0 to pi/2 */ +/* 2 -> sine window from pi/2 to pi */ +/* every other sample of window is linearly interpolated, for speed */ +void SKP_Silk_apply_sine_window( + SKP_int16 px_win[], /* O Pointer to windowed signal */ + + + + + + const SKP_int16 px[], /* I Pointer to input signal */ + const SKP_int win_type, /* I Selects a window type */ + const SKP_int length /* I Window length, multiple of 4 */ +) +{ + SKP_int k; + SKP_int32 px32, f_Q16, c_Q20, S0_Q16, S1_Q16; + + /* Length must be multiple of 4 */ + SKP_assert( ( length & 3 ) == 0 ); + + /* Input pointer must be 4-byte aligned */ + SKP_assert( ( (SKP_int64)px & 3 ) == 0 ); + + if( win_type == 0 ) { + f_Q16 = SKP_DIV32_16( 411775, length + 1 ); // 411775 = 2 * 65536 * pi + } else { + f_Q16 = SKP_DIV32_16( 205887, length + 1 ); // 205887 = 65536 * pi + } + + /* factor used for cosine approximation */ + c_Q20 = -SKP_RSHIFT( SKP_MUL( f_Q16, f_Q16 ), 12 ); + + /* c_Q20 becomes too large if length is too small */ + SKP_assert( c_Q20 >= -32768 ); + + /* initialize state */ + if( win_type < 2 ) { + /* start from 0 */ + S0_Q16 = 0; + /* approximation of sin(f) */ + S1_Q16 = f_Q16; + } else { + /* start from 1 */ + S0_Q16 = ( 1 << 16 ); + /* approximation of cos(f) */ + S1_Q16 = ( 1 << 16 ) + SKP_RSHIFT( c_Q20, 5 ); + } + + /* Uses the recursive equation: sin(n*f) = 2 * cos(f) * sin((n-1)*f) - sin((n-2)*f) */ + /* 4 samples at a time */ + for( k = 0; k < length; k += 4 ) { + px32 = *( (SKP_int32 *)&px[ k ] ); /* load two values at once */ + px_win[ k ] = (SKP_int16)SKP_SMULWB( SKP_RSHIFT( S0_Q16 + S1_Q16, 1 ), px32 ); + px_win[ k + 1 ] = (SKP_int16)SKP_SMULWT( S1_Q16, px32 ); + S0_Q16 = SKP_RSHIFT( SKP_MUL( c_Q20, S1_Q16 ), 20 ) + SKP_LSHIFT( S1_Q16, 1 ) - S0_Q16 + 1; + S0_Q16 = SKP_min( S0_Q16, ( 1 << 16 ) ); + + + + + + + px32 = *( (SKP_int32 *)&px[k + 2] ); /* load two values at once */ + px_win[ k + 2 ] = (SKP_int16)SKP_SMULWB( SKP_RSHIFT( S0_Q16 + S1_Q16, 1 ), px32 ); + px_win[ k + 3 ] = (SKP_int16)SKP_SMULWT( S0_Q16, px32 ); + S1_Q16 = SKP_RSHIFT( SKP_MUL( c_Q20, S0_Q16 ), 20 ) + SKP_LSHIFT( S0_Q16, 1 ) - S1_Q16; + S1_Q16 = SKP_min( S1_Q16, ( 1 << 16 ) ); + } +} + + diff --git a/libs/silk/src/SKP_Silk_array_maxabs.c b/libs/silk/src/SKP_Silk_array_maxabs.c new file mode 100644 index 0000000000..95a4215f4e --- /dev/null +++ b/libs/silk/src/SKP_Silk_array_maxabs.c @@ -0,0 +1,75 @@ + + +/*********************************************************************** + +Copyright (c) 2006-2010, Skype Limited. All rights reserved. +Redistribution and use in source and binary forms, with or without +modification, (subject to the limitations in the disclaimer below) +are permitted provided that the following conditions are met: +- Redistributions of source code must retain the above copyright notice, +this list of conditions and the following disclaimer. +- Redistributions in binary form must reproduce the above copyright +notice, this list of conditions and the following disclaimer in the +documentation and/or other materials provided with the distribution. +- Neither the name of Skype Limited, nor the names of specific +contributors, may be used to endorse or promote products derived from +this software without specific prior written permission. +NO EXPRESS OR IMPLIED LICENSES TO ANY PARTY'S PATENT RIGHTS ARE GRANTED +BY THIS LICENSE.THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND +CONTRIBUTORS ''AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, +BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND +FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE +COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, +INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT +NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF +USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON +ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT +(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE +OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + +***********************************************************************/ + +/* * + * SKP_Silk_int16_array_maxabs.c * + * * + * Function that returns the maximum absolut value of * + * the input vector * + * * + * Copyright 2006 (c), Skype Limited * + + + + + + * Date: 060221 * + * */ +#include "SKP_Silk_SigProc_FIX.h" + +/* Function that returns the maximum absolut value of the input vector */ +SKP_int16 SKP_Silk_int16_array_maxabs( /* O Maximum absolute value, max: 2^15-1 */ + const SKP_int16 *vec, /* I Input vector [len] */ + const SKP_int32 len /* I Length of input vector */ +) +{ + SKP_int32 max = 0, i, lvl = 0, ind; + + ind = len - 1; + max = SKP_SMULBB( vec[ ind ], vec[ ind ] ); + for( i = len - 2; i >= 0; i-- ) { + lvl = SKP_SMULBB( vec[ i ], vec[ i ] ); + if( lvl > max ) { + max = lvl; + ind = i; + } + } + + /* Do not return 32768, as it will not fit in an int16 so may lead to problems later on */ + lvl = SKP_abs( vec[ ind ] ); + if( lvl > SKP_int16_MAX ) { + return( SKP_int16_MAX ); + } else { + return( (SKP_int16)lvl ); + } +} + + diff --git a/libs/silk/src/SKP_Silk_autocorr.c b/libs/silk/src/SKP_Silk_autocorr.c new file mode 100644 index 0000000000..f96fcfbdbf --- /dev/null +++ b/libs/silk/src/SKP_Silk_autocorr.c @@ -0,0 +1,97 @@ + + +/*********************************************************************** + +Copyright (c) 2006-2010, Skype Limited. All rights reserved. +Redistribution and use in source and binary forms, with or without +modification, (subject to the limitations in the disclaimer below) +are permitted provided that the following conditions are met: +- Redistributions of source code must retain the above copyright notice, +this list of conditions and the following disclaimer. +- Redistributions in binary form must reproduce the above copyright +notice, this list of conditions and the following disclaimer in the +documentation and/or other materials provided with the distribution. +- Neither the name of Skype Limited, nor the names of specific +contributors, may be used to endorse or promote products derived from + + + + + +this software without specific prior written permission. +NO EXPRESS OR IMPLIED LICENSES TO ANY PARTY'S PATENT RIGHTS ARE GRANTED +BY THIS LICENSE.THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND +CONTRIBUTORS ''AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, +BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND +FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE +COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, +INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT +NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF +USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON +ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT +(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE +OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + +***********************************************************************/ + +/* * + * SKP_Silk_autocorr.c * + * * + * Calculates the autocorrelation * + * The result has 29 non-zero bits for the first correlation, to leave * + * some room for adding white noise fractions etc. * + * * + * Copyright 2008 (c), Skype Limited * + * */ +#include "SKP_Silk_SigProc_FIX.h" + +/* Compute autocorrelation */ +void SKP_Silk_autocorr( + SKP_int32 *results, /* O Result (length correlationCount) */ + SKP_int32 *scale, /* O Scaling of the correlation vector */ + const SKP_int16 *inputData, /* I Input data to correlate */ + const SKP_int inputDataSize, /* I Length of input */ + const SKP_int correlationCount /* I Number of correlation taps to compute */ +) +{ + SKP_int i, lz, nRightShifts, corrCount; + SKP_int64 corr64; + + corrCount = SKP_min_int( inputDataSize, correlationCount ); + + /* compute energy (zero-lag correlation) */ + corr64 = SKP_Silk_inner_prod16_aligned_64( inputData, inputData, inputDataSize ); + + /* deal with all-zero input data */ + corr64 += 1; + + /* number of leading zeros */ + + + + + + lz = SKP_Silk_CLZ64( corr64 ); + + /* scaling: number of right shifts applied to correlations */ + nRightShifts = 35 - lz; + *scale = nRightShifts; + + if( nRightShifts <= 0 ) { + results[ 0 ] = SKP_LSHIFT( (SKP_int32)SKP_CHECK_FIT32( corr64 ), -nRightShifts ); + + /* compute remaining correlations based on int32 inner product */ + for( i = 1; i < corrCount; i++ ) { + results[ i ] = SKP_LSHIFT( SKP_Silk_inner_prod_aligned( inputData, inputData + i, inputDataSize - i ), -nRightShifts ); + } + } else { + results[ 0 ] = (SKP_int32)SKP_CHECK_FIT32( SKP_RSHIFT64( corr64, nRightShifts ) ); + + /* compute remaining correlations based on int64 inner product */ + for( i = 1; i < corrCount; i++ ) { + results[ i ] = (SKP_int32)SKP_CHECK_FIT32( SKP_RSHIFT64( SKP_Silk_inner_prod16_aligned_64( inputData, inputData + i, inputDataSize - i ), nRightShifts ) ); + } + } +} + + diff --git a/libs/silk/src/SKP_Silk_biquad.c b/libs/silk/src/SKP_Silk_biquad.c new file mode 100644 index 0000000000..aa3a1d83b2 --- /dev/null +++ b/libs/silk/src/SKP_Silk_biquad.c @@ -0,0 +1,88 @@ + + +/*********************************************************************** + +Copyright (c) 2006-2010, Skype Limited. All rights reserved. +Redistribution and use in source and binary forms, with or without +modification, (subject to the limitations in the disclaimer below) +are permitted provided that the following conditions are met: +- Redistributions of source code must retain the above copyright notice, +this list of conditions and the following disclaimer. +- Redistributions in binary form must reproduce the above copyright +notice, this list of conditions and the following disclaimer in the +documentation and/or other materials provided with the distribution. +- Neither the name of Skype Limited, nor the names of specific +contributors, may be used to endorse or promote products derived from +this software without specific prior written permission. +NO EXPRESS OR IMPLIED LICENSES TO ANY PARTY'S PATENT RIGHTS ARE GRANTED +BY THIS LICENSE.THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND +CONTRIBUTORS ''AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, +BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND +FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE +COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, +INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT + + + + + +NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF +USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON +ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT +(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE +OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + +***********************************************************************/ + +/* * + * SKP_Silk_biquad.c * + * * + * Second order ARMA filter * + * Can handle slowly varying filter coefficients * + * * + * Copyright 2006 (c), Skype Limited * + * Date: 060221 * + * */ +#include "SKP_Silk_SigProc_FIX.h" + +/* Second order ARMA filter */ +/* Can handle slowly varying filter coefficients */ +void SKP_Silk_biquad( + const SKP_int16 *in, /* I: input signal */ + const SKP_int16 *B, /* I: MA coefficients, Q13 [3] */ + const SKP_int16 *A, /* I: AR coefficients, Q13 [2] */ + SKP_int32 *S, /* I/O: state vector [2] */ + SKP_int16 *out, /* O: output signal */ + const SKP_int32 len /* I: signal length */ +) +{ + SKP_int k, in16; + SKP_int32 A0_neg, A1_neg, S0, S1, out32, tmp32; + + S0 = S[ 0 ]; + S1 = S[ 1 ]; + A0_neg = -A[ 0 ]; + A1_neg = -A[ 1 ]; + for( k = 0; k < len; k++ ) { + /* S[ 0 ], S[ 1 ]: Q13 */ + in16 = in[ k ]; + out32 = SKP_SMLABB( S0, in16, B[ 0 ] ); + + S0 = SKP_SMLABB( S1, in16, B[ 1 ] ); + S0 += SKP_LSHIFT( SKP_SMULWB( out32, A0_neg ), 3 ); + + S1 = SKP_LSHIFT( SKP_SMULWB( out32, A1_neg ), 3 ); + S1 = SKP_SMLABB( S1, in16, B[ 2 ] ); + tmp32 = SKP_RSHIFT_ROUND( out32, 13 ) + 1; + + + + + + out[ k ] = (SKP_int16)SKP_SAT16( tmp32 ); + } + S[ 0 ] = S0; + S[ 1 ] = S1; +} + + diff --git a/libs/silk/src/SKP_Silk_biquad_alt.c b/libs/silk/src/SKP_Silk_biquad_alt.c new file mode 100644 index 0000000000..3b18992d7d --- /dev/null +++ b/libs/silk/src/SKP_Silk_biquad_alt.c @@ -0,0 +1,84 @@ + + +/*********************************************************************** + +Copyright (c) 2006-2010, Skype Limited. All rights reserved. +Redistribution and use in source and binary forms, with or without +modification, (subject to the limitations in the disclaimer below) +are permitted provided that the following conditions are met: +- Redistributions of source code must retain the above copyright notice, +this list of conditions and the following disclaimer. +- Redistributions in binary form must reproduce the above copyright +notice, this list of conditions and the following disclaimer in the +documentation and/or other materials provided with the distribution. +- Neither the name of Skype Limited, nor the names of specific +contributors, may be used to endorse or promote products derived from +this software without specific prior written permission. +NO EXPRESS OR IMPLIED LICENSES TO ANY PARTY'S PATENT RIGHTS ARE GRANTED +BY THIS LICENSE.THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND +CONTRIBUTORS ''AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, +BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND +FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE +COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, +INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT +NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF +USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON +ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT +(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE +OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + +***********************************************************************/ + +/* * + * SKP_Silk_biquad_alt.c * + * * + * Second order ARMA filter * + * Can handle slowly varying filter coefficients * + * */ +#include "SKP_Silk_SigProc_FIX.h" + + + + + + + +/* Second order ARMA filter, alternative implementation */ +void SKP_Silk_biquad_alt( + const SKP_int16 *in, /* I: Input signal */ + const SKP_int32 *B_Q28, /* I: MA coefficients [3] */ + const SKP_int32 *A_Q28, /* I: AR coefficients [2] */ + SKP_int32 *S, /* I/O: State vector [2] */ + SKP_int16 *out, /* O: Output signal */ + const SKP_int32 len /* I: Signal length (must be even) */ +) +{ + /* DIRECT FORM II TRANSPOSED (uses 2 element state vector) */ + SKP_int k; + SKP_int32 inval, A0_U_Q28, A0_L_Q28, A1_U_Q28, A1_L_Q28, out32_Q14; + + /* Negate A_Q28 values and split in two parts */ + A0_L_Q28 = ( -A_Q28[ 0 ] ) & 0x00003FFF; /* lower part */ + A0_U_Q28 = SKP_RSHIFT( -A_Q28[ 0 ], 14 ); /* upper part */ + A1_L_Q28 = ( -A_Q28[ 1 ] ) & 0x00003FFF; /* lower part */ + A1_U_Q28 = SKP_RSHIFT( -A_Q28[ 1 ], 14 ); /* upper part */ + + for( k = 0; k < len; k++ ) { + /* S[ 0 ], S[ 1 ]: Q12 */ + inval = in[ k ]; + out32_Q14 = SKP_LSHIFT( SKP_SMLAWB( S[ 0 ], B_Q28[ 0 ], inval ), 2 ); + + S[ 0 ] = S[1] + SKP_RSHIFT( SKP_SMULWB( out32_Q14, A0_L_Q28 ), 14 ); + S[ 0 ] = SKP_SMLAWB( S[ 0 ], out32_Q14, A0_U_Q28 ); + S[ 0 ] = SKP_SMLAWB( S[ 0 ], B_Q28[ 1 ], inval); + + S[ 1 ] = SKP_RSHIFT( SKP_SMULWB( out32_Q14, A1_L_Q28 ), 14 ); + S[ 1 ] = SKP_SMLAWB( S[ 1 ], out32_Q14, A1_U_Q28 ); + S[ 1 ] = SKP_SMLAWB( S[ 1 ], B_Q28[ 2 ], inval ); + + /* Scale back to Q0 and saturate */ + out[ k ] = (SKP_int16)SKP_SAT16( SKP_RSHIFT( out32_Q14, 14 ) + 2 ); + } +} + + diff --git a/libs/silk/src/SKP_Silk_burg_modified.c b/libs/silk/src/SKP_Silk_burg_modified.c new file mode 100644 index 0000000000..efe4e661a5 --- /dev/null +++ b/libs/silk/src/SKP_Silk_burg_modified.c @@ -0,0 +1,253 @@ + + +/*********************************************************************** + +Copyright (c) 2006-2010, Skype Limited. All rights reserved. +Redistribution and use in source and binary forms, with or without +modification, (subject to the limitations in the disclaimer below) +are permitted provided that the following conditions are met: +- Redistributions of source code must retain the above copyright notice, +this list of conditions and the following disclaimer. +- Redistributions in binary form must reproduce the above copyright +notice, this list of conditions and the following disclaimer in the +documentation and/or other materials provided with the distribution. +- Neither the name of Skype Limited, nor the names of specific +contributors, may be used to endorse or promote products derived from +this software without specific prior written permission. +NO EXPRESS OR IMPLIED LICENSES TO ANY PARTY'S PATENT RIGHTS ARE GRANTED +BY THIS LICENSE.THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND +CONTRIBUTORS ''AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, +BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND +FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE +COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, +INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT +NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF +USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON +ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT +(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE +OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + +***********************************************************************/ + +/* * + * SKP_Silk_burg_modified.c * + * * + * Calculates the reflection coefficients from the input vector * + * Input vector contains nb_subfr sub vectors of length L_sub + D * + * * + * Copyright 2009 (c), Skype Limited * + * Date: 100105 * + */ + +#include "SKP_Silk_SigProc_FIX.h" + +#define MAX_FRAME_SIZE 544 // subfr_length * nb_subfr = ( 0.005 * 24000 + 16 ) * 4 = 544 +#define MAX_NB_SUBFR 4 + +#define QA 24 + + + + + +#define N_BITS_HEAD_ROOM 2 +#define MIN_RSHIFTS -16 +#define MAX_RSHIFTS (32 - QA) + +/* Compute reflection coefficients from input signal */ +void SKP_Silk_burg_modified( + SKP_int32 *res_nrg, /* O residual energy */ + SKP_int *res_nrg_Q, /* O residual energy Q value */ + SKP_int32 A_Q16[], /* O prediction coefficients (length order) */ + const SKP_int16 x[], /* I input signal, length: nb_subfr * ( D + subfr_length ) */ + const SKP_int subfr_length, /* I input signal subframe length (including D preceeding samples) */ + const SKP_int nb_subfr, /* I number of subframes stacked in x */ + const SKP_int32 WhiteNoiseFrac_Q32, /* I fraction added to zero-lag autocorrelation */ + const SKP_int D /* I order */ +) +{ + SKP_int k, n, s, lz, rshifts, rshifts_extra; + SKP_int32 C0, num, nrg, rc_Q31, Atmp_QA, Atmp1, tmp1, tmp2, x1, x2; + const SKP_int16 *x_ptr; + + SKP_int32 C_first_row[ SigProc_MAX_ORDER_LPC ]; + SKP_int32 C_last_row[ SigProc_MAX_ORDER_LPC ]; + SKP_int32 Af_QA[ SigProc_MAX_ORDER_LPC ]; + + SKP_int32 CAf[ SigProc_MAX_ORDER_LPC + 1 ]; + SKP_int32 CAb[ SigProc_MAX_ORDER_LPC + 1 ]; + + SKP_assert( subfr_length * nb_subfr <= MAX_FRAME_SIZE ); + SKP_assert( nb_subfr <= MAX_NB_SUBFR ); + + + /* Compute autocorrelations, added over subframes */ + SKP_Silk_sum_sqr_shift( &C0, &rshifts, x, nb_subfr * subfr_length ); + if( rshifts > MAX_RSHIFTS ) { + C0 = SKP_LSHIFT32( C0, rshifts - MAX_RSHIFTS ); + SKP_assert( C0 > 0 ); + rshifts = MAX_RSHIFTS; + } else { + lz = SKP_Silk_CLZ32( C0 ) - 1; + rshifts_extra = N_BITS_HEAD_ROOM - lz; + if( rshifts_extra > 0 ) { + rshifts_extra = SKP_min( rshifts_extra, MAX_RSHIFTS - rshifts ); + C0 = SKP_RSHIFT32( C0, rshifts_extra ); + } else { + rshifts_extra = SKP_max( rshifts_extra, MIN_RSHIFTS - rshifts ); + C0 = SKP_LSHIFT32( C0, -rshifts_extra ); + } + rshifts += rshifts_extra; + + + + + + } + SKP_memset( C_first_row, 0, SigProc_MAX_ORDER_LPC * sizeof( SKP_int32 ) ); + if( rshifts > 0 ) { + for( s = 0; s < nb_subfr; s++ ) { + x_ptr = x + s * subfr_length; + for( n = 1; n < D + 1; n++ ) { + C_first_row[ n - 1 ] += (SKP_int32)SKP_RSHIFT64( + SKP_Silk_inner_prod16_aligned_64( x_ptr, x_ptr + n, subfr_length - n ), rshifts ); + } + } + } else { + for( s = 0; s < nb_subfr; s++ ) { + x_ptr = x + s * subfr_length; + for( n = 1; n < D + 1; n++ ) { + C_first_row[ n - 1 ] += SKP_LSHIFT32( + SKP_Silk_inner_prod_aligned( x_ptr, x_ptr + n, subfr_length - n ), -rshifts ); + } + } + } + SKP_memcpy( C_last_row, C_first_row, SigProc_MAX_ORDER_LPC * sizeof( SKP_int32 ) ); + + /* Initialize */ + CAb[ 0 ] = CAf[ 0 ] = C0 + SKP_SMMUL( WhiteNoiseFrac_Q32, C0 ) + 1; // Q(-rshifts) + + for( n = 0; n < D; n++ ) { + /* Update first row of correlation matrix (without first element) */ + /* Update last row of correlation matrix (without last element, stored in reversed order) */ + /* Update C * Af */ + /* Update C * flipud(Af) (stored in reversed order) */ + if( rshifts > -2 ) { + for( s = 0; s < nb_subfr; s++ ) { + x_ptr = x + s * subfr_length; + x1 = -SKP_LSHIFT32( (SKP_int32)x_ptr[ n ], 16 - rshifts ); // Q(16-rshifts) + x2 = -SKP_LSHIFT32( (SKP_int32)x_ptr[ subfr_length - n - 1 ], 16 - rshifts ); // Q(16-rshifts) + tmp1 = SKP_LSHIFT32( (SKP_int32)x_ptr[ n ], QA - 16 ); // Q(QA-16) + tmp2 = SKP_LSHIFT32( (SKP_int32)x_ptr[ subfr_length - n - 1 ], QA - 16 ); // Q(QA-16) + for( k = 0; k < n; k++ ) { + C_first_row[ k ] = SKP_SMLAWB( C_first_row[ k ], x1, x_ptr[ n - k - 1 ] ); // Q( -rshifts ) + C_last_row[ k ] = SKP_SMLAWB( C_last_row[ k ], x2, x_ptr[ subfr_length - n + k ] ); // Q( -rshifts ) + Atmp_QA = Af_QA[ k ]; + tmp1 = SKP_SMLAWB( tmp1, Atmp_QA, x_ptr[ n - k - 1 ] ); // Q(QA-16) + tmp2 = SKP_SMLAWB( tmp2, Atmp_QA, x_ptr[ subfr_length - n + k ] ); // Q(QA-16) + } + tmp1 = SKP_LSHIFT32( -tmp1, 32 - QA - rshifts ); // Q(16-rshifts) + tmp2 = SKP_LSHIFT32( -tmp2, 32 - QA - rshifts ); // Q(16-rshifts) + for( k = 0; k <= n; k++ ) { + CAf[ k ] = SKP_SMLAWB( CAf[ k ], tmp1, x_ptr[ n - k ] ); // Q( -rshift ) + CAb[ k ] = SKP_SMLAWB( CAb[ k ], tmp2, x_ptr[ subfr_length - n + k - 1 ] ); // Q( -rshift ) + + + + + + } + } + } else { + for( s = 0; s < nb_subfr; s++ ) { + x_ptr = x + s * subfr_length; + x1 = -SKP_LSHIFT32( (SKP_int32)x_ptr[ n ], -rshifts ); // Q( -rshifts ) + x2 = -SKP_LSHIFT32( (SKP_int32)x_ptr[ subfr_length - n - 1 ], -rshifts ); // Q( -rshifts ) + tmp1 = SKP_LSHIFT32( (SKP_int32)x_ptr[ n ], 17 ); // Q17 + tmp2 = SKP_LSHIFT32( (SKP_int32)x_ptr[ subfr_length - n - 1 ], 17 ); // Q17 + for( k = 0; k < n; k++ ) { + C_first_row[ k ] = SKP_MLA( C_first_row[ k ], x1, x_ptr[ n - k - 1 ] ); // Q( -rshifts ) + C_last_row[ k ] = SKP_MLA( C_last_row[ k ], x2, x_ptr[ subfr_length - n + k ] ); // Q( -rshifts ) + Atmp1 = SKP_RSHIFT_ROUND( Af_QA[ k ], QA - 17 ); // Q17 + tmp1 = SKP_MLA( tmp1, x_ptr[ n - k - 1 ], Atmp1 ); // Q17 + tmp2 = SKP_MLA( tmp2, x_ptr[ subfr_length - n + k ], Atmp1 ); // Q17 + } + tmp1 = -tmp1; // Q17 + tmp2 = -tmp2; // Q17 + for( k = 0; k <= n; k++ ) { + CAf[ k ] = SKP_SMLAWW( CAf[ k ], tmp1, + SKP_LSHIFT32( (SKP_int32)x_ptr[ n - k ], -rshifts - 1 ) ); // Q( -rshift ) + CAb[ k ] = SKP_SMLAWW( CAb[ k ], tmp2, + SKP_LSHIFT32( (SKP_int32)x_ptr[ subfr_length - n + k - 1 ], -rshifts - 1 ) );// Q( -rshift ) + } + } + } + + /* Calculate nominator and denominator for the next order reflection (parcor) coefficient */ + tmp1 = C_first_row[ n ]; // Q( -rshifts ) + tmp2 = C_last_row[ n ]; // Q( -rshifts ) + num = 0; // Q( -rshifts ) + nrg = SKP_ADD32( CAb[ 0 ], CAf[ 0 ] ); // Q( 1-rshifts ) + for( k = 0; k < n; k++ ) { + Atmp_QA = Af_QA[ k ]; + lz = SKP_Silk_CLZ32( SKP_abs( Atmp_QA ) ) - 1; + lz = SKP_min( 32 - QA, lz ); + Atmp1 = SKP_LSHIFT32( Atmp_QA, lz ); // Q( QA + lz ) + + tmp1 = SKP_ADD_LSHIFT32( tmp1, SKP_SMMUL( C_last_row[ n - k - 1 ], Atmp1 ), 32 - QA - lz ); // Q( -rshifts ) + tmp2 = SKP_ADD_LSHIFT32( tmp2, SKP_SMMUL( C_first_row[ n - k - 1 ], Atmp1 ), 32 - QA - lz ); // Q( -rshifts ) + num = SKP_ADD_LSHIFT32( num, SKP_SMMUL( CAb[ n - k ], Atmp1 ), 32 - QA - lz ); // Q( -rshifts ) + nrg = SKP_ADD_LSHIFT32( nrg, SKP_SMMUL( SKP_ADD32( CAb[ k + 1 ], CAf[ k + 1 ] ), + Atmp1 ), 32 - QA - lz ); // Q( 1-rshifts ) + } + CAf[ n + 1 ] = tmp1; // Q( -rshifts ) + CAb[ n + 1 ] = tmp2; // Q( -rshifts ) + num = SKP_ADD32( num, tmp2 ); // Q( -rshifts ) + num = SKP_LSHIFT32( -num, 1 ); // Q( 1-rshifts ) + + + + + + /* Calculate the next order reflection (parcor) coefficient */ + if( SKP_abs( num ) < nrg ) { + rc_Q31 = SKP_DIV32_varQ( num, nrg, 31 ); + } else { + /* Negative energy or ratio too high; set remaining coefficients to zero and exit loop */ + SKP_memset( &Af_QA[ n ], 0, ( D - n ) * sizeof( SKP_int32 ) ); + SKP_assert( 0 ); + break; + } + + /* Update the AR coefficients */ + for( k = 0; k < (n + 1) >> 1; k++ ) { + tmp1 = Af_QA[ k ]; // QA + tmp2 = Af_QA[ n - k - 1 ]; // QA + Af_QA[ k ] = SKP_ADD_LSHIFT32( tmp1, SKP_SMMUL( tmp2, rc_Q31 ), 1 ); // QA + Af_QA[ n - k - 1 ] = SKP_ADD_LSHIFT32( tmp2, SKP_SMMUL( tmp1, rc_Q31 ), 1 ); // QA + } + Af_QA[ n ] = SKP_RSHIFT32( rc_Q31, 31 - QA ); // QA + + /* Update C * Af and C * Ab */ + for( k = 0; k <= n + 1; k++ ) { + tmp1 = CAf[ k ]; // Q( -rshifts ) + tmp2 = CAb[ n - k + 1 ]; // Q( -rshifts ) + CAf[ k ] = SKP_ADD_LSHIFT32( tmp1, SKP_SMMUL( tmp2, rc_Q31 ), 1 ); // Q( -rshifts ) + CAb[ n - k + 1 ] = SKP_ADD_LSHIFT32( tmp2, SKP_SMMUL( tmp1, rc_Q31 ), 1 ); // Q( -rshifts ) + } + } + + /* Return residual energy */ + nrg = CAf[ 0 ]; // Q( -rshifts ) + tmp1 = 1 << 16; // Q16 + for( k = 0; k < D; k++ ) { + Atmp1 = SKP_RSHIFT_ROUND( Af_QA[ k ], QA - 16 ); // Q16 + nrg = SKP_SMLAWW( nrg, CAf[ k + 1 ], Atmp1 ); // Q( -rshifts ) + tmp1 = SKP_SMLAWW( tmp1, Atmp1, Atmp1 ); // Q16 + A_Q16[ k ] = -Atmp1; + } + *res_nrg = SKP_SMLAWW( nrg, SKP_SMMUL( WhiteNoiseFrac_Q32, C0 ), -tmp1 ); // Q( -rshifts ) + *res_nrg_Q = -rshifts; +} + + diff --git a/libs/silk/src/SKP_Silk_bwexpander.c b/libs/silk/src/SKP_Silk_bwexpander.c new file mode 100644 index 0000000000..cfa445b52d --- /dev/null +++ b/libs/silk/src/SKP_Silk_bwexpander.c @@ -0,0 +1,60 @@ + + +/*********************************************************************** + +Copyright (c) 2006-2010, Skype Limited. All rights reserved. +Redistribution and use in source and binary forms, with or without +modification, (subject to the limitations in the disclaimer below) +are permitted provided that the following conditions are met: + + + + + +- Redistributions of source code must retain the above copyright notice, +this list of conditions and the following disclaimer. +- Redistributions in binary form must reproduce the above copyright +notice, this list of conditions and the following disclaimer in the +documentation and/or other materials provided with the distribution. +- Neither the name of Skype Limited, nor the names of specific +contributors, may be used to endorse or promote products derived from +this software without specific prior written permission. +NO EXPRESS OR IMPLIED LICENSES TO ANY PARTY'S PATENT RIGHTS ARE GRANTED +BY THIS LICENSE.THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND +CONTRIBUTORS ''AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, +BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND +FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE +COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, +INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT +NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF +USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON +ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT +(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE +OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + +***********************************************************************/ + +#include "SKP_Silk_SigProc_FIX.h" + +/* Chirp (bandwidth expand) LP AR filter */ +void SKP_Silk_bwexpander( + SKP_int16 *ar, /* I/O AR filter to be expanded (without leading 1) */ + const SKP_int d, /* I Length of ar */ + SKP_int32 chirp_Q16 /* I Chirp factor (typically in the range 0 to 1) */ +) +{ + SKP_int i; + SKP_int32 chirp_minus_one_Q16; + + chirp_minus_one_Q16 = chirp_Q16 - 65536; + + /* NB: Dont use SKP_SMULWB, instead of SKP_RSHIFT_ROUND( SKP_MUL() , 16 ), below. */ + /* Bias in SKP_SMULWB can lead to unstable filters */ + for( i = 0; i < d - 1; i++ ) { + ar[ i ] = (SKP_int16)SKP_RSHIFT_ROUND( SKP_MUL( chirp_Q16, ar[ i ] ), 16 ); + chirp_Q16 += SKP_RSHIFT_ROUND( SKP_MUL( chirp_Q16, chirp_minus_one_Q16 ), 16 ); + } + ar[ d - 1 ] = (SKP_int16)SKP_RSHIFT_ROUND( SKP_MUL( chirp_Q16, ar[ d - 1 ] ), 16 ); +} + + diff --git a/libs/silk/src/SKP_Silk_bwexpander_32.c b/libs/silk/src/SKP_Silk_bwexpander_32.c new file mode 100644 index 0000000000..94c219b9ff --- /dev/null +++ b/libs/silk/src/SKP_Silk_bwexpander_32.c @@ -0,0 +1,58 @@ + + + + + +/*********************************************************************** + +Copyright (c) 2006-2010, Skype Limited. All rights reserved. +Redistribution and use in source and binary forms, with or without +modification, (subject to the limitations in the disclaimer below) +are permitted provided that the following conditions are met: +- Redistributions of source code must retain the above copyright notice, +this list of conditions and the following disclaimer. +- Redistributions in binary form must reproduce the above copyright +notice, this list of conditions and the following disclaimer in the +documentation and/or other materials provided with the distribution. +- Neither the name of Skype Limited, nor the names of specific +contributors, may be used to endorse or promote products derived from +this software without specific prior written permission. +NO EXPRESS OR IMPLIED LICENSES TO ANY PARTY'S PATENT RIGHTS ARE GRANTED +BY THIS LICENSE.THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND +CONTRIBUTORS ''AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, +BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND +FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE +COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, +INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT +NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF +USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON +ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT +(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE +OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + +***********************************************************************/ + +#include "SKP_Silk_SigProc_FIX.h" + +/* Chirp (bandwidth expand) LP AR filter */ +void SKP_Silk_bwexpander_32( + SKP_int32 *ar, /* I/O AR filter to be expanded (without leading 1) */ + const SKP_int d, /* I Length of ar */ + SKP_int32 chirp_Q16 /* I Chirp factor in Q16 */ +) +{ + SKP_int i; + SKP_int32 tmp_chirp_Q16; + + tmp_chirp_Q16 = chirp_Q16; + for( i = 0; i < d - 1; i++ ) { + ar[ i ] = SKP_SMULWW( ar[ i ], tmp_chirp_Q16 ); + tmp_chirp_Q16 = SKP_SMULWW( chirp_Q16, tmp_chirp_Q16 ); + } + ar[ d - 1 ] = SKP_SMULWW( ar[ d - 1 ], tmp_chirp_Q16 ); +} + + + + + diff --git a/libs/silk/src/SKP_Silk_code_signs.c b/libs/silk/src/SKP_Silk_code_signs.c new file mode 100644 index 0000000000..4065ba16f8 --- /dev/null +++ b/libs/silk/src/SKP_Silk_code_signs.c @@ -0,0 +1,103 @@ + + +/*********************************************************************** + +Copyright (c) 2006-2010, Skype Limited. All rights reserved. +Redistribution and use in source and binary forms, with or without +modification, (subject to the limitations in the disclaimer below) +are permitted provided that the following conditions are met: +- Redistributions of source code must retain the above copyright notice, +this list of conditions and the following disclaimer. +- Redistributions in binary form must reproduce the above copyright +notice, this list of conditions and the following disclaimer in the +documentation and/or other materials provided with the distribution. +- Neither the name of Skype Limited, nor the names of specific +contributors, may be used to endorse or promote products derived from +this software without specific prior written permission. +NO EXPRESS OR IMPLIED LICENSES TO ANY PARTY'S PATENT RIGHTS ARE GRANTED +BY THIS LICENSE.THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND +CONTRIBUTORS ''AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, +BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND +FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE +COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, +INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT +NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF +USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON +ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT +(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE +OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + +***********************************************************************/ + +#include "SKP_Silk_main.h" + +//#define SKP_enc_map(a) ((a) > 0 ? 1 : 0) +//#define SKP_dec_map(a) ((a) > 0 ? 1 : -1) +/* shifting avoids if-statement */ +#define SKP_enc_map(a) ( SKP_RSHIFT( (a), 15 ) + 1 ) +#define SKP_dec_map(a) ( SKP_LSHIFT( (a), 1 ) - 1 ) + +/* Encodes signs of excitation */ +void SKP_Silk_encode_signs( + + + + + + SKP_Silk_range_coder_state *sRC, /* I/O Range coder state */ + const SKP_int q[], /* I Pulse signal */ + const SKP_int length, /* I Length of input */ + const SKP_int sigtype, /* I Signal type */ + const SKP_int QuantOffsetType, /* I Quantization offset type */ + const SKP_int RateLevelIndex /* I Rate level index */ +) +{ + SKP_int i; + SKP_int inData; + const SKP_uint16 *cdf; + + i = SKP_SMULBB( N_RATE_LEVELS - 1, SKP_LSHIFT( sigtype, 1 ) + QuantOffsetType ) + RateLevelIndex; + cdf = SKP_Silk_sign_CDF[ i ]; + + for( i = 0; i < length; i++ ) { + if( q[ i ] != 0 ) { + inData = SKP_enc_map( q[ i ] ); /* - = 0, + = 1 */ + SKP_Silk_range_encoder( sRC, inData, cdf ); + } + } +} + +/* Decodes signs of excitation */ +void SKP_Silk_decode_signs( + SKP_Silk_range_coder_state *sRC, /* I/O Range coder state */ + SKP_int q[], /* I/O pulse signal */ + const SKP_int length, /* I length of output */ + const SKP_int sigtype, /* I Signal type */ + const SKP_int QuantOffsetType, /* I Quantization offset type */ + const SKP_int RateLevelIndex /* I Rate Level Index */ +) +{ + SKP_int i; + SKP_int data; + const SKP_uint16 *cdf; + + i = SKP_SMULBB( N_RATE_LEVELS - 1, SKP_LSHIFT( sigtype, 1 ) + QuantOffsetType ) + RateLevelIndex; + cdf = SKP_Silk_sign_CDF[ i ]; + + for( i = 0; i < length; i++ ) { + if( q[ i ] > 0 ) { + SKP_Silk_range_decoder( &data, sRC, cdf, 1 ); + /* attach sign */ + /* implementation with shift, subtraction, multiplication */ + q[ i ] *= SKP_dec_map( data ); + } + } + + + + + +} + + + diff --git a/libs/silk/src/SKP_Silk_common_pitch_est_defines.h b/libs/silk/src/SKP_Silk_common_pitch_est_defines.h new file mode 100644 index 0000000000..9c39922881 --- /dev/null +++ b/libs/silk/src/SKP_Silk_common_pitch_est_defines.h @@ -0,0 +1,86 @@ + + +/*********************************************************************** + +Copyright (c) 2006-2010, Skype Limited. All rights reserved. +Redistribution and use in source and binary forms, with or without +modification, (subject to the limitations in the disclaimer below) +are permitted provided that the following conditions are met: +- Redistributions of source code must retain the above copyright notice, +this list of conditions and the following disclaimer. +- Redistributions in binary form must reproduce the above copyright +notice, this list of conditions and the following disclaimer in the +documentation and/or other materials provided with the distribution. +- Neither the name of Skype Limited, nor the names of specific +contributors, may be used to endorse or promote products derived from +this software without specific prior written permission. +NO EXPRESS OR IMPLIED LICENSES TO ANY PARTY'S PATENT RIGHTS ARE GRANTED +BY THIS LICENSE.THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND +CONTRIBUTORS ''AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, +BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND +FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE +COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, +INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT +NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF +USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON +ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT +(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE +OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + +***********************************************************************/ + +#ifndef SIGPROC_COMMON_PITCH_EST_DEFINES_H +#define SIGPROC_COMMON_PITCH_EST_DEFINES_H + +#include "SKP_Silk_SigProc_FIX.h" + +/************************************************************/ +/* Definitions For Fix pitch estimator */ +/************************************************************/ + +#define PITCH_EST_MAX_FS_KHZ 24 /* Maximum sampling frequency used */ + +#define PITCH_EST_FRAME_LENGTH_MS 40 /* 40 ms */ + + + + + +#define PITCH_EST_MAX_FRAME_LENGTH (PITCH_EST_FRAME_LENGTH_MS * PITCH_EST_MAX_FS_KHZ) +#define PITCH_EST_MAX_FRAME_LENGTH_ST_1 (PITCH_EST_MAX_FRAME_LENGTH >> 2) +#define PITCH_EST_MAX_FRAME_LENGTH_ST_2 (PITCH_EST_MAX_FRAME_LENGTH >> 1) +#define PITCH_EST_MAX_SF_FRAME_LENGTH (PITCH_EST_SUB_FRAME * PITCH_EST_MAX_FS_KHZ) + +#define PITCH_EST_MAX_LAG_MS 18 /* 18 ms -> 56 Hz */ +#define PITCH_EST_MIN_LAG_MS 2 /* 2 ms -> 500 Hz */ +#define PITCH_EST_MAX_LAG (PITCH_EST_MAX_LAG_MS * PITCH_EST_MAX_FS_KHZ) +#define PITCH_EST_MIN_LAG (PITCH_EST_MIN_LAG_MS * PITCH_EST_MAX_FS_KHZ) + +#define PITCH_EST_NB_SUBFR 4 + +#define PITCH_EST_D_SRCH_LENGTH 24 + +#define PITCH_EST_MAX_DECIMATE_STATE_LENGTH 7 + +#define PITCH_EST_NB_STAGE3_LAGS 5 + +#define PITCH_EST_NB_CBKS_STAGE2 3 +#define PITCH_EST_NB_CBKS_STAGE2_EXT 11 + +#define PITCH_EST_CB_mn2 1 +#define PITCH_EST_CB_mx2 2 + +#define PITCH_EST_NB_CBKS_STAGE3_MAX 34 +#define PITCH_EST_NB_CBKS_STAGE3_MID 24 +#define PITCH_EST_NB_CBKS_STAGE3_MIN 16 + +extern const SKP_int16 SKP_Silk_CB_lags_stage2[PITCH_EST_NB_SUBFR][PITCH_EST_NB_CBKS_STAGE2_EXT]; +extern const SKP_int16 SKP_Silk_CB_lags_stage3[PITCH_EST_NB_SUBFR][PITCH_EST_NB_CBKS_STAGE3_MAX]; +extern const SKP_int16 SKP_Silk_Lag_range_stage3[ SigProc_PITCH_EST_MAX_COMPLEX + 1 ] [ PITCH_EST_NB_SUBFR ][ 2 ]; +extern const SKP_int16 SKP_Silk_cbk_sizes_stage3[ SigProc_PITCH_EST_MAX_COMPLEX + 1 ]; +extern const SKP_int16 SKP_Silk_cbk_offsets_stage3[ SigProc_PITCH_EST_MAX_COMPLEX + 1 ]; + +#endif + + + diff --git a/libs/silk/src/SKP_Silk_control_codec_FIX.c b/libs/silk/src/SKP_Silk_control_codec_FIX.c new file mode 100644 index 0000000000..4b77b0c6ea --- /dev/null +++ b/libs/silk/src/SKP_Silk_control_codec_FIX.c @@ -0,0 +1,731 @@ + + +/*********************************************************************** + +Copyright (c) 2006-2010, Skype Limited. All rights reserved. +Redistribution and use in source and binary forms, with or without +modification, (subject to the limitations in the disclaimer below) +are permitted provided that the following conditions are met: +- Redistributions of source code must retain the above copyright notice, + + + + + +this list of conditions and the following disclaimer. +- Redistributions in binary form must reproduce the above copyright +notice, this list of conditions and the following disclaimer in the +documentation and/or other materials provided with the distribution. +- Neither the name of Skype Limited, nor the names of specific +contributors, may be used to endorse or promote products derived from +this software without specific prior written permission. +NO EXPRESS OR IMPLIED LICENSES TO ANY PARTY'S PATENT RIGHTS ARE GRANTED +BY THIS LICENSE.THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND +CONTRIBUTORS ''AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, +BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND +FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE +COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, +INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT +NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF +USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON +ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT +(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE +OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + +***********************************************************************/ + +#include "SKP_Silk_main_FIX.h" + +/* Control encoder SNR */ +SKP_int SKP_Silk_control_encoder_FIX( + SKP_Silk_encoder_state_FIX *psEnc, /* I/O Pointer to Silk encoder state */ + const SKP_int API_fs_kHz, /* I External (API) sampling rate (kHz) */ + const SKP_int PacketSize_ms, /* I Packet length (ms) */ + SKP_int32 TargetRate_bps, /* I Target max bitrate (bps) (used if SNR_dB == 0) */ + const SKP_int PacketLoss_perc, /* I Packet loss rate (in percent) */ + const SKP_int INBandFec_enabled, /* I Enable (1) / disable (0) inband FEC */ + const SKP_int DTX_enabled, /* I Enable / disable DTX */ + const SKP_int InputFramesize_ms, /* I Inputframe in ms */ + const SKP_int Complexity /* I Complexity (0->low; 1->medium; 2->high) */ +) +{ + SKP_int32 LBRRRate_thres_bps; + SKP_int k, fs_kHz, ret = 0; + SKP_int32 frac_Q6; + const SKP_int32 *rateTable; + + /* State machine for the SWB/WB switching */ + fs_kHz = psEnc->sCmn.fs_kHz; + + /* Only switch during low speech activity, when no frames are sitting in the payload buffer */ + if( API_fs_kHz == 8 || fs_kHz == 0 || API_fs_kHz < fs_kHz ) { + // Switching is not possible, encoder just initialized, or internal mode higher than external + + + + + + fs_kHz = API_fs_kHz; + } else { + + /* Resample all valid data in x_buf. Resampling the last part gets rid of a click, 5ms after switching */ + /* this is because the same state is used when downsampling in API.c and is then up to date */ + /* the click immidiatly after switching is most of the time still there */ + + if( psEnc->sCmn.fs_kHz == 24 ) { + /* Accumulate the difference between the target rate and limit */ + if( psEnc->sCmn.fs_kHz_changed == 0 ) { + psEnc->sCmn.bitrateDiff += SKP_MUL( InputFramesize_ms, TargetRate_bps - SWB2WB_BITRATE_BPS_INITIAL ); + } else { + psEnc->sCmn.bitrateDiff += SKP_MUL( InputFramesize_ms, TargetRate_bps - SWB2WB_BITRATE_BPS ); + } + psEnc->sCmn.bitrateDiff = SKP_min( psEnc->sCmn.bitrateDiff, 0 ); + + /* Check if we should switch from 24 to 16 kHz */ +#if SWITCH_TRANSITION_FILTERING + if( ( psEnc->sCmn.sLP.transition_frame_no == 0 ) && /* Transition phase not active */ + ( psEnc->sCmn.bitrateDiff <= -ACCUM_BITS_DIFF_THRESHOLD || psEnc->sCmn.sSWBdetect.WB_detected == 1 ) && + ( psEnc->speech_activity_Q8 < 128 && psEnc->sCmn.nFramesInPayloadBuf == 0 ) ) { + psEnc->sCmn.sLP.transition_frame_no = 1; /* Begin transition phase */ + psEnc->sCmn.sLP.mode = 0; /* Switch down */ + } + + if( ( psEnc->sCmn.sLP.transition_frame_no >= TRANSITION_FRAMES_DOWN ) && ( psEnc->sCmn.sLP.mode == 0 ) && /* Transition phase complete, ready to switch */ +#else + if( ( psEnc->sCmn.bitrateDiff <= -ACCUM_BITS_DIFF_THRESHOLD || psEnc->sCmn.sSWBdetect.WB_detected == 1 ) && +#endif + ( psEnc->speech_activity_Q8 < 128 && psEnc->sCmn.nFramesInPayloadBuf == 0 ) ) { + + SKP_int16 x_buf[ 2 * MAX_FRAME_LENGTH + LA_SHAPE_MAX ]; + SKP_int16 x_bufout[ 2 * MAX_FRAME_LENGTH + LA_SHAPE_MAX ]; + + psEnc->sCmn.bitrateDiff = 0; + fs_kHz = 16; + + SKP_memcpy( x_buf, psEnc->x_buf, ( 2 * MAX_FRAME_LENGTH + LA_SHAPE_MAX ) * sizeof( SKP_int16 ) ); + + SKP_memset( psEnc->sCmn.resample24To16state, 0, sizeof( psEnc->sCmn.resample24To16state ) ); + +#if LOW_COMPLEXITY_ONLY + { + SKP_int16 scratch[ ( 2 * MAX_FRAME_LENGTH + LA_SHAPE_MAX ) + SigProc_Resample_2_3_coarse_NUM_FIR_COEFS - 1 ]; + SKP_Silk_resample_2_3_coarse( &x_bufout[ 0 ], psEnc->sCmn.resample24To16state, &x_buf[ 0 ], SKP_LSHIFT( psEnc->sCmn.frame_length, 1 ) + psEnc->sCmn.la_shape, (SKP_int16*)scratch ); + } +#else + SKP_Silk_resample_2_3( &x_bufout[ 0 ], psEnc->sCmn.resample24To16state, &x_buf[ 0 ], SKP_LSHIFT( psEnc->sCmn.frame_length, 1 ) + psEnc->sCmn.la_shape ); + + + + + +#endif + + /* set the first frame to zero, no performance difference was noticed though */ + SKP_memset( x_bufout, 0, 320 * sizeof( SKP_int16 ) ); + SKP_memcpy( psEnc->x_buf, x_bufout, ( 2 * MAX_FRAME_LENGTH + LA_SHAPE_MAX ) * sizeof( SKP_int16 ) ); + +#if SWITCH_TRANSITION_FILTERING + psEnc->sCmn.sLP.transition_frame_no = 0; /* Transition phase complete */ +#endif + } + } else if( psEnc->sCmn.fs_kHz == 16 ) { + + /* Check if we should switch from 16 to 24 kHz */ +#if SWITCH_TRANSITION_FILTERING + if( ( psEnc->sCmn.sLP.transition_frame_no == 0 ) && /* No transition phase running, ready to switch */ +#else + if( +#endif + ( API_fs_kHz > psEnc->sCmn.fs_kHz && TargetRate_bps >= WB2SWB_BITRATE_BPS && psEnc->sCmn.sSWBdetect.WB_detected == 0 ) && + ( psEnc->speech_activity_Q8 < 128 && psEnc->sCmn.nFramesInPayloadBuf == 0 ) ) { + + SKP_int16 x_buf[ 2 * MAX_FRAME_LENGTH + LA_SHAPE_MAX ]; + SKP_int16 x_bufout[ 3 * ( 2 * MAX_FRAME_LENGTH + LA_SHAPE_MAX ) / 2 ]; + SKP_int32 resample16To24state[ 11 ]; + + psEnc->sCmn.bitrateDiff = 0; + fs_kHz = 24; + + SKP_memcpy( x_buf, psEnc->x_buf, ( 2 * MAX_FRAME_LENGTH + LA_SHAPE_MAX ) * sizeof( SKP_int16 ) ); + + SKP_memset( resample16To24state, 0, sizeof(resample16To24state) ); + + SKP_Silk_resample_3_2( &x_bufout[ 0 ], resample16To24state, &x_buf[ 0 ], SKP_LSHIFT( psEnc->sCmn.frame_length, 1 ) + psEnc->sCmn.la_shape ); + + /* set the first frame to zero, no performance difference was noticed though */ + SKP_memset( x_bufout, 0, 480 * sizeof( SKP_int16 ) ); + SKP_memcpy( psEnc->x_buf, x_bufout, ( 2 * MAX_FRAME_LENGTH + LA_SHAPE_MAX ) * sizeof( SKP_int16 ) ); +#if SWITCH_TRANSITION_FILTERING + psEnc->sCmn.sLP.mode = 1; /* Switch up */ +#endif + } else { + /* accumulate the difference between the target rate and limit */ + psEnc->sCmn.bitrateDiff += SKP_MUL( InputFramesize_ms, TargetRate_bps - WB2MB_BITRATE_BPS ); + psEnc->sCmn.bitrateDiff = SKP_min( psEnc->sCmn.bitrateDiff, 0 ); + + /* Check if we should switch from 16 to 12 kHz */ +#if SWITCH_TRANSITION_FILTERING + if( ( psEnc->sCmn.sLP.transition_frame_no == 0 ) && /* Transition phase not active */ + + + + + + ( psEnc->sCmn.bitrateDiff <= -ACCUM_BITS_DIFF_THRESHOLD ) && + ( psEnc->speech_activity_Q8 < 128 && psEnc->sCmn.nFramesInPayloadBuf == 0 ) ) { + psEnc->sCmn.sLP.transition_frame_no = 1; /* Begin transition phase */ + psEnc->sCmn.sLP.mode = 0; /* Switch down */ + } + + if( ( psEnc->sCmn.sLP.transition_frame_no >= TRANSITION_FRAMES_DOWN ) && ( psEnc->sCmn.sLP.mode == 0 ) && /* Transition phase complete, ready to switch */ +#else + if( ( psEnc->sCmn.bitrateDiff <= -ACCUM_BITS_DIFF_THRESHOLD ) && +#endif + ( psEnc->speech_activity_Q8 < 128 && psEnc->sCmn.nFramesInPayloadBuf == 0 ) ) { + + SKP_int16 x_buf[ 2 * MAX_FRAME_LENGTH + LA_SHAPE_MAX ]; + + SKP_memcpy( x_buf, psEnc->x_buf, ( 2 * MAX_FRAME_LENGTH + LA_SHAPE_MAX ) * sizeof( SKP_int16 ) ); + + psEnc->sCmn.bitrateDiff = 0; + fs_kHz = 12; + + if( API_fs_kHz == 24 ) { + + /* Intermediate upsampling of x_bufFIX from 16 to 24 kHz */ + SKP_int16 x_buf24[ 3 * ( 2 * MAX_FRAME_LENGTH + LA_SHAPE_MAX ) / 2 ]; + SKP_int32 scratch[ 3 * ( 2 * MAX_FRAME_LENGTH + LA_SHAPE_MAX ) ]; + SKP_int32 resample16To24state[ 11 ]; + + SKP_memset( resample16To24state, 0, sizeof( resample16To24state ) ); + SKP_Silk_resample_3_2( &x_buf24[ 0 ], resample16To24state, &x_buf[ 0 ], SKP_LSHIFT( psEnc->sCmn.frame_length, 1 ) + psEnc->sCmn.la_shape ); + + /* Update the state of the resampler used in API.c, from 24 to 12 kHz */ + SKP_memset( psEnc->sCmn.resample24To12state, 0, sizeof( psEnc->sCmn.resample24To12state ) ); + SKP_Silk_resample_1_2_coarse( &x_buf24[ 0 ], psEnc->sCmn.resample24To12state, &x_buf[ 0 ], scratch, SKP_RSHIFT( SKP_SMULBB( 3, SKP_LSHIFT( psEnc->sCmn.frame_length, 1 ) + psEnc->sCmn.la_shape ), 2 ) ); + + /* set the first frame to zero, no performance difference was noticed though */ + SKP_memset( x_buf, 0, 240 * sizeof( SKP_int16 ) ); + SKP_memcpy( psEnc->x_buf, x_buf, ( 2 * MAX_FRAME_LENGTH + LA_SHAPE_MAX ) * sizeof( SKP_int16 ) ); + + } else if( API_fs_kHz == 16 ) { + SKP_int16 x_bufout[ 3 * ( 2 * MAX_FRAME_LENGTH + LA_SHAPE_MAX ) / 4 ]; + SKP_memset( psEnc->sCmn.resample16To12state, 0, sizeof( psEnc->sCmn.resample16To12state ) ); + + SKP_Silk_resample_3_4( &x_bufout[ 0 ], psEnc->sCmn.resample16To12state, &x_buf[ 0 ], SKP_LSHIFT( psEnc->sCmn.frame_length, 1 ) + psEnc->sCmn.la_shape ); + + /* set the first frame to zero, no performance difference was noticed though */ + SKP_memset( x_bufout, 0, 240 * sizeof( SKP_int16 ) ); + SKP_memcpy( psEnc->x_buf, x_bufout, ( 2 * MAX_FRAME_LENGTH + LA_SHAPE_MAX ) * sizeof( SKP_int16 ) ); + } +#if SWITCH_TRANSITION_FILTERING + + + + + + psEnc->sCmn.sLP.transition_frame_no = 0; /* Transition phase complete */ +#endif + } + } + } else if( psEnc->sCmn.fs_kHz == 12 ) { + + /* Check if we should switch from 12 to 16 kHz */ +#if SWITCH_TRANSITION_FILTERING + if( ( psEnc->sCmn.sLP.transition_frame_no == 0 ) && /* No transition phase running, ready to switch */ +#else + if( +#endif + ( API_fs_kHz > psEnc->sCmn.fs_kHz && TargetRate_bps >= MB2WB_BITRATE_BPS ) && + ( psEnc->speech_activity_Q8 < 128 && psEnc->sCmn.nFramesInPayloadBuf == 0 ) ) { + + SKP_int16 x_buf[ 2 * MAX_FRAME_LENGTH + LA_SHAPE_MAX ]; + + SKP_memcpy( x_buf, psEnc->x_buf, ( 2 * MAX_FRAME_LENGTH + LA_SHAPE_MAX ) * sizeof( SKP_int16 ) ); + + psEnc->sCmn.bitrateDiff = 0; + fs_kHz = 16; + + /* Reset state of the resampler to be used */ + if( API_fs_kHz == 24 ) { + + SKP_int16 x_bufout[ 2 * 2 * ( 2 * MAX_FRAME_LENGTH + LA_SHAPE_MAX ) / 3 ]; + + /* Intermediate upsampling of x_bufFIX from 12 to 24 kHz */ + SKP_int16 x_buf24[ 2 * ( 2 * MAX_FRAME_LENGTH + LA_SHAPE_MAX ) ]; + SKP_int32 scratch[ 3 * ( 2 * MAX_FRAME_LENGTH + LA_SHAPE_MAX ) ]; + SKP_int32 resample12To24state[6]; + + SKP_memset( resample12To24state, 0, sizeof( resample12To24state ) ); + SKP_Silk_resample_2_1_coarse( &x_buf[ 0 ], resample12To24state, &x_buf24[ 0 ], scratch, SKP_LSHIFT( psEnc->sCmn.frame_length, 1 ) + psEnc->sCmn.la_shape ); + + SKP_memset( psEnc->sCmn.resample24To16state, 0, sizeof( psEnc->sCmn.resample24To16state ) ); + +#if LOW_COMPLEXITY_ONLY + SKP_assert( sizeof( SKP_int16 ) * ( 2 * ( 2 * MAX_FRAME_LENGTH + LA_SHAPE_MAX ) + SigProc_Resample_2_3_coarse_NUM_FIR_COEFS - 1 ) <= sizeof( scratch ) ); + SKP_Silk_resample_2_3_coarse( &x_bufout[ 0 ], psEnc->sCmn.resample24To16state, &x_buf24[ 0 ], SKP_LSHIFT( SKP_LSHIFT( psEnc->sCmn.frame_length, 1 ) + psEnc->sCmn.la_shape, 1 ), (SKP_int16*)scratch ); +#else + SKP_Silk_resample_2_3( &x_bufout[ 0 ], psEnc->sCmn.resample24To16state, &x_buf24[ 0 ], SKP_LSHIFT( SKP_LSHIFT( psEnc->sCmn.frame_length, 1 ) + psEnc->sCmn.la_shape, 1 ) ); +#endif + + /* set the first frame to zero, no performance difference was noticed though */ + SKP_memset( x_bufout, 0, 320 * sizeof( SKP_int16 ) ); + SKP_memcpy( psEnc->x_buf, x_bufout, ( 2 * MAX_FRAME_LENGTH + LA_SHAPE_MAX ) * sizeof( SKP_int16 ) ); + } + + + + + +#if SWITCH_TRANSITION_FILTERING + psEnc->sCmn.sLP.mode = 1; /* Switch up */ +#endif + } else { + /* accumulate the difference between the target rate and limit */ + psEnc->sCmn.bitrateDiff += SKP_MUL( InputFramesize_ms, TargetRate_bps - MB2NB_BITRATE_BPS ); + psEnc->sCmn.bitrateDiff = SKP_min( psEnc->sCmn.bitrateDiff, 0 ); + + /* Check if we should switch from 12 to 8 kHz */ +#if SWITCH_TRANSITION_FILTERING + if( ( psEnc->sCmn.sLP.transition_frame_no == 0 ) && /* Transition phase not active */ + ( psEnc->sCmn.bitrateDiff <= -ACCUM_BITS_DIFF_THRESHOLD ) && + ( psEnc->speech_activity_Q8 < 128 && psEnc->sCmn.nFramesInPayloadBuf == 0 ) ) { + psEnc->sCmn.sLP.transition_frame_no = 1; /* Begin transition phase */ + psEnc->sCmn.sLP.mode = 0; /* Switch down */ + } + + if( ( psEnc->sCmn.sLP.transition_frame_no >= TRANSITION_FRAMES_DOWN ) && ( psEnc->sCmn.sLP.mode == 0 ) && +#else + if( ( psEnc->sCmn.bitrateDiff <= -ACCUM_BITS_DIFF_THRESHOLD ) && +#endif + ( psEnc->speech_activity_Q8 < 128 && psEnc->sCmn.nFramesInPayloadBuf == 0 ) ) { + + SKP_int16 x_buf[ 2 * MAX_FRAME_LENGTH + LA_SHAPE_MAX ]; + + SKP_memcpy( x_buf, psEnc->x_buf, ( 2 * MAX_FRAME_LENGTH + LA_SHAPE_MAX ) * sizeof( SKP_int16 ) ); + + psEnc->sCmn.bitrateDiff = 0; + fs_kHz = 8; + + if( API_fs_kHz == 24 ) { + + SKP_int32 scratch[ 3 * ( 2 * MAX_FRAME_LENGTH + LA_SHAPE_MAX ) ]; + /* Intermediate upsampling of x_buf from 12 to 24 kHz */ + SKP_int16 x_buf24[ 2 * ( 2 * MAX_FRAME_LENGTH + LA_SHAPE_MAX ) ]; + SKP_int32 resample12To24state[ 6 ]; + + SKP_memset( resample12To24state, 0, sizeof( resample12To24state ) ); + SKP_Silk_resample_2_1_coarse( &x_buf[ 0 ], resample12To24state, &x_buf24[ 0 ], scratch, SKP_LSHIFT( psEnc->sCmn.frame_length, 1 ) + psEnc->sCmn.la_shape ); + + /* Update the state of the resampler used in API.c, from 24 to 8 kHz */ + SKP_memset( psEnc->sCmn.resample24To8state, 0, sizeof( psEnc->sCmn.resample24To8state ) ); + SKP_Silk_resample_1_3( &x_buf[ 0 ], psEnc->sCmn.resample24To8state, &x_buf24[ 0 ], SKP_LSHIFT( SKP_LSHIFT( psEnc->sCmn.frame_length, 1 ) + psEnc->sCmn.la_shape, 1 ) ); + + /* set the first frame to zero, no performance difference was noticed though */ + SKP_memset( x_buf, 0, 160 * sizeof( SKP_int16 ) ); + SKP_memcpy( psEnc->x_buf, x_buf, ( 2 * MAX_FRAME_LENGTH + LA_SHAPE_MAX ) * sizeof( SKP_int16 ) ); + + + + + + + } else if( API_fs_kHz == 16 ) { + /* Intermediate upsampling of x_bufFIX from 12 to 16 kHz */ + SKP_int16 x_buf16[ 3 * ( 2 * MAX_FRAME_LENGTH + LA_SHAPE_MAX ) / 2 ]; + SKP_int32 resample12To16state[11]; + + SKP_memset( resample12To16state, 0, sizeof( resample12To16state ) ); + SKP_Silk_resample_3_2( &x_buf16[ 0 ], resample12To16state, &x_buf[ 0 ], SKP_LSHIFT( psEnc->sCmn.frame_length, 1 ) + psEnc->sCmn.la_shape ); + + /* set the first frame to zero, no performance difference was noticed though */ + SKP_memset( x_buf, 0, 160 * sizeof( SKP_int16 ) ); + SKP_memcpy( psEnc->x_buf, x_buf, ( 2 * MAX_FRAME_LENGTH + LA_SHAPE_MAX ) * sizeof( SKP_int16 ) ); + + } else if( API_fs_kHz == 12 ) { + SKP_int16 x_bufout[ 2 * ( 2 * MAX_FRAME_LENGTH + LA_SHAPE_MAX ) / 3 ]; + SKP_memset( psEnc->sCmn.resample12To8state, 0, sizeof( psEnc->sCmn.resample12To8state ) ); +#if LOW_COMPLEXITY_ONLY + { + SKP_int16 scratch[ ( 2 * MAX_FRAME_LENGTH + LA_SHAPE_MAX ) + SigProc_Resample_2_3_coarse_NUM_FIR_COEFS - 1 ]; + SKP_Silk_resample_2_3_coarse( &x_bufout[ 0 ], psEnc->sCmn.resample12To8state, &x_buf[ 0 ], + SKP_LSHIFT( psEnc->sCmn.frame_length, 1 ) + psEnc->sCmn.la_shape, scratch ); + } +#else + SKP_Silk_resample_2_3( &x_bufout[ 0 ], psEnc->sCmn.resample12To8state, &x_buf[ 0 ], SKP_LSHIFT( psEnc->sCmn.frame_length, 1 ) + psEnc->sCmn.la_shape ); +#endif + /* set the first frame to zero, no performance difference was noticed though */ + SKP_memset( x_bufout, 0, 160 * sizeof( SKP_int16 ) ); + SKP_memcpy( psEnc->x_buf, x_bufout, ( 2 * MAX_FRAME_LENGTH + LA_SHAPE_MAX ) * sizeof( SKP_int16 ) ); + } +#if SWITCH_TRANSITION_FILTERING + psEnc->sCmn.sLP.transition_frame_no = 0; /* Transition phase complete */ +#endif + } + } + } else if( psEnc->sCmn.fs_kHz == 8 ) { + + /* Check if we should switch from 8 to 12 kHz */ +#if SWITCH_TRANSITION_FILTERING + if( ( psEnc->sCmn.sLP.transition_frame_no == 0 ) && /* No transition phase running, ready to switch */ +#else + if( +#endif + ( API_fs_kHz > psEnc->sCmn.fs_kHz && TargetRate_bps >= NB2MB_BITRATE_BPS ) && + ( psEnc->speech_activity_Q8 < 128 && psEnc->sCmn.nFramesInPayloadBuf == 0 ) ) { + + SKP_int16 x_buf[ 2 * MAX_FRAME_LENGTH + LA_SHAPE_MAX ]; + + SKP_memcpy( x_buf, psEnc->x_buf, ( 2 * MAX_FRAME_LENGTH + LA_SHAPE_MAX ) * sizeof( SKP_int16 ) ); + + + + + + + psEnc->sCmn.bitrateDiff = 0; + fs_kHz = 12; + + /* Reset state of the resampler to be used */ + if( API_fs_kHz == 24 ) { + SKP_int16 x_buf24[ 3 * ( 2 * MAX_FRAME_LENGTH + LA_SHAPE_MAX ) ]; + SKP_int32 scratch[ 3 * 3 * ( 2 * MAX_FRAME_LENGTH + LA_SHAPE_MAX ) / 2 ]; + SKP_int32 resample8To24state[ 7 ]; + + /* Intermediate upsampling of x_bufFIX from 8 to 24 kHz */ + SKP_memset( resample8To24state, 0, sizeof( resample8To24state ) ); + SKP_Silk_resample_3_1( &x_buf24[ 0 ], resample8To24state, &x_buf[ 0 ], SKP_LSHIFT( psEnc->sCmn.frame_length, 1 ) + psEnc->sCmn.la_shape ); + + SKP_memset( psEnc->sCmn.resample24To12state, 0, sizeof( psEnc->sCmn.resample24To12state ) ); + + SKP_Silk_resample_1_2_coarse( &x_buf24[ 0 ], psEnc->sCmn.resample24To12state, &x_buf[ 0 ], scratch, SKP_RSHIFT( SKP_SMULBB( 3, SKP_LSHIFT( psEnc->sCmn.frame_length, 1 ) + psEnc->sCmn.la_shape ), 1 ) ); + + /* set the first frame to zero, no performance difference was noticed though */ + SKP_memset( x_buf, 0, 240 * sizeof( SKP_int16 ) ); + SKP_memcpy( psEnc->x_buf, x_buf, ( 2 * MAX_FRAME_LENGTH + LA_SHAPE_MAX ) * sizeof( SKP_int16 ) ); + + } else if( API_fs_kHz == 16 ) { + SKP_int16 x_buf16[ 2 * ( 2 * MAX_FRAME_LENGTH + LA_SHAPE_MAX ) ]; + SKP_int32 scratch[ 3 * ( 2 * MAX_FRAME_LENGTH + LA_SHAPE_MAX ) ]; + SKP_int32 resample8To16state[ 6 ]; + + /* Intermediate upsampling of x_bufFIX from 8 to 16 kHz */ + SKP_memset( resample8To16state, 0, sizeof( resample8To16state ) ); + SKP_Silk_resample_2_1_coarse( &x_buf[ 0 ], resample8To16state, &x_buf16[ 0 ], scratch, SKP_LSHIFT( psEnc->sCmn.frame_length, 1 ) + psEnc->sCmn.la_shape ); + + SKP_memset( psEnc->sCmn.resample16To12state, 0, sizeof( psEnc->sCmn.resample16To12state ) ); + + SKP_Silk_resample_3_4( &x_buf[ 0 ], psEnc->sCmn.resample16To12state, &x_buf16[ 0 ], SKP_LSHIFT( SKP_LSHIFT( psEnc->sCmn.frame_length, 1 ) + psEnc->sCmn.la_shape, 1 ) ); + + /* set the first frame to zero, no performance difference was noticed though */ + SKP_memset( x_buf, 0, 240 * sizeof( SKP_int16 ) ); + SKP_memcpy( psEnc->x_buf, x_buf, ( 2 * MAX_FRAME_LENGTH + LA_SHAPE_MAX ) * sizeof( SKP_int16 ) ); + } +#if SWITCH_TRANSITION_FILTERING + psEnc->sCmn.sLP.mode = 1; /* Switch up */ +#endif + } + } else { + // Internal sample frequency not supported! + SKP_assert( 0 ); + } + } + + + + + + +#if SWITCH_TRANSITION_FILTERING + /* After switching up, stop transition filter during speech inactivity */ + if( ( psEnc->sCmn.sLP.mode == 1 ) && + ( psEnc->sCmn.sLP.transition_frame_no >= TRANSITION_FRAMES_UP ) && + ( psEnc->speech_activity_Q8 < 128 ) && + ( psEnc->sCmn.nFramesInPayloadBuf == 0 ) ) { + + psEnc->sCmn.sLP.transition_frame_no = 0; + + /* Reset transition filter state */ + SKP_memset( psEnc->sCmn.sLP.In_LP_State, 0, 2 * sizeof( SKP_int32 ) ); + } +#endif + + + + /* Set internal sampling frequency */ + if( psEnc->sCmn.fs_kHz != fs_kHz ) { + /* reset part of the state */ + SKP_memset( &psEnc->sShape, 0, sizeof( SKP_Silk_shape_state_FIX ) ); + SKP_memset( &psEnc->sPrefilt, 0, sizeof( SKP_Silk_prefilter_state_FIX ) ); + SKP_memset( &psEnc->sNSQ, 0, sizeof( SKP_Silk_nsq_state ) ); + SKP_memset( &psEnc->sPred, 0, sizeof( SKP_Silk_predict_state_FIX ) ); + SKP_memset( psEnc->sNSQ.xq, 0, ( 2 * MAX_FRAME_LENGTH ) * sizeof( SKP_int16 ) ); + SKP_memset( psEnc->sNSQ_LBRR.xq, 0, ( 2 * MAX_FRAME_LENGTH ) * sizeof( SKP_int16 ) ); + SKP_memset( psEnc->sCmn.LBRR_buffer, 0, MAX_LBRR_DELAY * sizeof( SKP_SILK_LBRR_struct ) ); +#if SWITCH_TRANSITION_FILTERING + SKP_memset( psEnc->sCmn.sLP.In_LP_State, 0, 2 * sizeof( SKP_int32 ) ); + if( psEnc->sCmn.sLP.mode == 1 ) { + /* Begin transition phase */ + psEnc->sCmn.sLP.transition_frame_no = 1; + } else { + /* End transition phase */ + psEnc->sCmn.sLP.transition_frame_no = 0; + } +#endif + psEnc->sCmn.inputBufIx = 0; + psEnc->sCmn.nFramesInPayloadBuf = 0; + psEnc->sCmn.nBytesInPayloadBuf = 0; + psEnc->sCmn.oldest_LBRR_idx = 0; + psEnc->sCmn.TargetRate_bps = 0; /* ensures that psEnc->SNR_dB is recomputed */ + + SKP_memset( psEnc->sPred.prev_NLSFq_Q15, 0, MAX_LPC_ORDER * sizeof( SKP_int ) ); + + /* Initialize non-zero parameters */ + psEnc->sCmn.prevLag = 100; + psEnc->sCmn.prev_sigtype = SIG_TYPE_UNVOICED; + psEnc->sCmn.first_frame_after_reset = 1; + + + + + + psEnc->sPrefilt.lagPrev = 100; + psEnc->sShape.LastGainIndex = 1; + psEnc->sNSQ.lagPrev = 100; + psEnc->sNSQ.prev_inv_gain_Q16 = 65536; + psEnc->sNSQ_LBRR.prev_inv_gain_Q16 = 65536; + psEnc->sCmn.fs_kHz = fs_kHz; + if( psEnc->sCmn.fs_kHz == 8 ) { + psEnc->sCmn.predictLPCOrder = MIN_LPC_ORDER; + psEnc->sCmn.psNLSF_CB[ 0 ] = &SKP_Silk_NLSF_CB0_10; + psEnc->sCmn.psNLSF_CB[ 1 ] = &SKP_Silk_NLSF_CB1_10; + } else { + psEnc->sCmn.predictLPCOrder = MAX_LPC_ORDER; + psEnc->sCmn.psNLSF_CB[ 0 ] = &SKP_Silk_NLSF_CB0_16; + psEnc->sCmn.psNLSF_CB[ 1 ] = &SKP_Silk_NLSF_CB1_16; + } + psEnc->sCmn.frame_length = SKP_SMULBB( FRAME_LENGTH_MS, fs_kHz ); + psEnc->sCmn.subfr_length = SKP_DIV32_16( psEnc->sCmn.frame_length, NB_SUBFR ); + psEnc->sCmn.la_pitch = SKP_SMULBB( LA_PITCH_MS, fs_kHz ); + psEnc->sCmn.la_shape = SKP_SMULBB( LA_SHAPE_MS, fs_kHz ); + psEnc->sPred.min_pitch_lag = SKP_SMULBB( 3, fs_kHz ); + psEnc->sPred.max_pitch_lag = SKP_SMULBB( 18, fs_kHz ); + psEnc->sPred.pitch_LPC_win_length = SKP_SMULBB( FIND_PITCH_LPC_WIN_MS, fs_kHz ); + if( psEnc->sCmn.fs_kHz == 24 ) { + psEnc->mu_LTP_Q8 = MU_LTP_QUANT_SWB_Q8; + } else if( psEnc->sCmn.fs_kHz == 16 ) { + psEnc->mu_LTP_Q8 = MU_LTP_QUANT_WB_Q8; + } else if( psEnc->sCmn.fs_kHz == 12 ) { + psEnc->mu_LTP_Q8 = MU_LTP_QUANT_MB_Q8; + } else { + psEnc->mu_LTP_Q8 = MU_LTP_QUANT_NB_Q8; + } + psEnc->sCmn.fs_kHz_changed = 1; + + /* Check that settings are valid */ + SKP_assert( ( psEnc->sCmn.subfr_length * NB_SUBFR ) == psEnc->sCmn.frame_length ); + } + + /* Set encoding complexity */ + if( Complexity == 0 || LOW_COMPLEXITY_ONLY ) { + /* Low complexity */ + psEnc->sCmn.Complexity = 0; + psEnc->sCmn.pitchEstimationComplexity = PITCH_EST_COMPLEXITY_LC_MODE; + psEnc->pitchEstimationThreshold_Q16 = FIND_PITCH_CORRELATION_THRESHOLD_Q16_LC_MODE; + psEnc->sCmn.pitchEstimationLPCOrder = 8; + psEnc->sCmn.shapingLPCOrder = 12; + psEnc->sCmn.nStatesDelayedDecision = 1; + psEnc->NoiseShapingQuantizer = SKP_Silk_NSQ; + psEnc->sCmn.useInterpolatedNLSFs = 0; + + + + + + psEnc->sCmn.LTPQuantLowComplexity = 1; + psEnc->sCmn.NLSF_MSVQ_Survivors = MAX_NLSF_MSVQ_SURVIVORS_LC_MODE; + } else if( Complexity == 1 ) { + /* Medium complexity */ + psEnc->sCmn.Complexity = 1; + psEnc->sCmn.pitchEstimationComplexity = PITCH_EST_COMPLEXITY_MC_MODE; + psEnc->pitchEstimationThreshold_Q16 = FIND_PITCH_CORRELATION_THRESHOLD_Q16_MC_MODE; + psEnc->sCmn.pitchEstimationLPCOrder = 12; + psEnc->sCmn.shapingLPCOrder = 16; + psEnc->sCmn.nStatesDelayedDecision = 2; + psEnc->NoiseShapingQuantizer = SKP_Silk_NSQ_del_dec; + psEnc->sCmn.useInterpolatedNLSFs = 0; + psEnc->sCmn.LTPQuantLowComplexity = 0; + psEnc->sCmn.NLSF_MSVQ_Survivors = MAX_NLSF_MSVQ_SURVIVORS_MC_MODE; + } else if( Complexity == 2 ) { + /* High complexity */ + psEnc->sCmn.Complexity = 2; + psEnc->sCmn.pitchEstimationComplexity = PITCH_EST_COMPLEXITY_HC_MODE; + psEnc->pitchEstimationThreshold_Q16 = FIND_PITCH_CORRELATION_THRESHOLD_Q16_HC_MODE; + psEnc->sCmn.pitchEstimationLPCOrder = 16; + psEnc->sCmn.shapingLPCOrder = 16; + psEnc->sCmn.nStatesDelayedDecision = 4; + psEnc->NoiseShapingQuantizer = SKP_Silk_NSQ_del_dec; + psEnc->sCmn.useInterpolatedNLSFs = 1; + psEnc->sCmn.LTPQuantLowComplexity = 0; + psEnc->sCmn.NLSF_MSVQ_Survivors = MAX_NLSF_MSVQ_SURVIVORS; + } else { + ret = SKP_SILK_ENC_WRONG_COMPLEXITY_SETTING; + } + + /* Dont have higher Pitch estimation LPC order than predict LPC order */ + psEnc->sCmn.pitchEstimationLPCOrder = SKP_min_int( psEnc->sCmn.pitchEstimationLPCOrder, psEnc->sCmn.predictLPCOrder ); + + SKP_assert( psEnc->sCmn.pitchEstimationLPCOrder <= FIND_PITCH_LPC_ORDER_MAX ); + SKP_assert( psEnc->sCmn.shapingLPCOrder <= SHAPE_LPC_ORDER_MAX ); + SKP_assert( psEnc->sCmn.nStatesDelayedDecision <= DEL_DEC_STATES_MAX ); + + /* Set bitrate/coding quality */ + TargetRate_bps = SKP_min( TargetRate_bps, 100000 ); + if( psEnc->sCmn.fs_kHz == 8 ) { + TargetRate_bps = SKP_max( TargetRate_bps, MIN_TARGET_RATE_NB_BPS ); + } else if( psEnc->sCmn.fs_kHz == 12 ) { + TargetRate_bps = SKP_max( TargetRate_bps, MIN_TARGET_RATE_MB_BPS ); + } else if( psEnc->sCmn.fs_kHz == 16 ) { + TargetRate_bps = SKP_max( TargetRate_bps, MIN_TARGET_RATE_WB_BPS ); + } else { + TargetRate_bps = SKP_max( TargetRate_bps, MIN_TARGET_RATE_SWB_BPS ); + } + + + + + + if( TargetRate_bps != psEnc->sCmn.TargetRate_bps ) { + psEnc->sCmn.TargetRate_bps = TargetRate_bps; + + /* if new TargetRate_bps, translate to SNR_dB value */ + if( psEnc->sCmn.fs_kHz == 8 ) { + rateTable = TargetRate_table_NB; + } else if( psEnc->sCmn.fs_kHz == 12 ) { + rateTable = TargetRate_table_MB; + } else if( psEnc->sCmn.fs_kHz == 16 ) { + rateTable = TargetRate_table_WB; + } else { + rateTable = TargetRate_table_SWB; + } + for( k = 1; k < TARGET_RATE_TAB_SZ; k++ ) { + /* find bitrate interval in table and interpolate */ + if( TargetRate_bps < rateTable[ k ] ) { + frac_Q6 = SKP_DIV32( SKP_LSHIFT( TargetRate_bps - rateTable[ k - 1 ], 6 ), rateTable[ k ] - rateTable[ k - 1 ] ); + psEnc->SNR_dB_Q7 = SKP_LSHIFT( SNR_table_Q1[ k - 1 ], 6 ) + SKP_MUL( frac_Q6, SNR_table_Q1[ k ] - SNR_table_Q1[ k - 1 ] ); + break; + } + } + } + + /* Set packet size */ + if( ( PacketSize_ms != 20 ) && + ( PacketSize_ms != 40 ) && + ( PacketSize_ms != 60 ) && + ( PacketSize_ms != 80 ) && + ( PacketSize_ms != 100 ) ) { + ret = SKP_SILK_ENC_PACKET_SIZE_NOT_SUPPORTED; + } else { + if( PacketSize_ms != psEnc->sCmn.PacketSize_ms ) { + psEnc->sCmn.PacketSize_ms = PacketSize_ms; + + /* Packet length changes. Reset LBRR buffer */ + SKP_Silk_LBRR_reset( &psEnc->sCmn ); + } + } + + /* Set packet loss rate measured by farend */ + if( ( PacketLoss_perc < 0 ) || ( PacketLoss_perc > 100 ) ) { + ret = SKP_SILK_ENC_WRONG_LOSS_RATE; + } + psEnc->sCmn.PacketLoss_perc = PacketLoss_perc; + +#if USE_LBRR + if( INBandFec_enabled < 0 || INBandFec_enabled > 1 ) { + ret = SKP_SILK_ENC_WRONG_INBAND_FEC_SETTING; + + + + + + } + + /* Only change settings if first frame in packet */ + if( psEnc->sCmn.nFramesInPayloadBuf == 0 ) { + + psEnc->sCmn.LBRR_enabled = INBandFec_enabled; + if( psEnc->sCmn.fs_kHz == 8 ) { + LBRRRate_thres_bps = INBAND_FEC_MIN_RATE_BPS - 9000; + } else if( psEnc->sCmn.fs_kHz == 12 ) { + LBRRRate_thres_bps = INBAND_FEC_MIN_RATE_BPS - 6000;; + } else if( psEnc->sCmn.fs_kHz == 16 ) { + LBRRRate_thres_bps = INBAND_FEC_MIN_RATE_BPS - 3000; + } else { + LBRRRate_thres_bps = INBAND_FEC_MIN_RATE_BPS; + } + + if( psEnc->sCmn.TargetRate_bps >= LBRRRate_thres_bps ) { + /* Set gain increase / rate reduction for LBRR usage */ + /* Coarse tuned with pesq for now. */ + /* Linear regression coefs G = 8 - 0.5 * loss */ + /* Meaning that at 16% loss main rate and redundant rate is the same, -> G = 0 */ + psEnc->sCmn.LBRR_GainIncreases = SKP_max_int( 8 - SKP_RSHIFT( psEnc->sCmn.PacketLoss_perc, 1 ), 0 ); + + /* Set main stream rate compensation */ + if( psEnc->sCmn.LBRR_enabled && psEnc->sCmn.PacketLoss_perc > LBRR_LOSS_THRES ) { + /* Tuned to give aprox same mean / weighted bitrate as no inband FEC */ + psEnc->inBandFEC_SNR_comp_Q8 = ( 6 << 8 ) - SKP_LSHIFT( psEnc->sCmn.LBRR_GainIncreases, 7 ); + } else { + psEnc->inBandFEC_SNR_comp_Q8 = 0; + psEnc->sCmn.LBRR_enabled = 0; + } + } else { + psEnc->inBandFEC_SNR_comp_Q8 = 0; + psEnc->sCmn.LBRR_enabled = 0; + } + } +#else + psEnc->sCmn.LBRR_enabled = 0; +#endif + + /* Set DTX mode */ + if( DTX_enabled < 0 || DTX_enabled > 1 ) { + ret = SKP_SILK_ENC_WRONG_DTX_SETTING; + } + psEnc->sCmn.useDTX = DTX_enabled; + + return ret; +} + + + + + +/* Control low bitrate redundancy usage */ +void SKP_Silk_LBRR_ctrl_FIX( + SKP_Silk_encoder_state_FIX *psEnc, /* I/O encoder state */ + SKP_Silk_encoder_control_FIX *psEncCtrl /* I/O encoder control */ +) +{ + SKP_int LBRR_usage; + + if( psEnc->sCmn.LBRR_enabled ) { + /* Control LBRR */ + + /* Usage Control based on sensitivity and packet loss caracteristics */ + /* For now only enable adding to next for active frames. Make more complex later */ + LBRR_usage = SKP_SILK_NO_LBRR; + if( psEnc->speech_activity_Q8 > LBRR_SPEECH_ACTIVITY_THRES_Q8 && psEnc->sCmn.PacketLoss_perc > LBRR_LOSS_THRES ) { // nb! maybe multiply loss prob and speech activity + //if( psEnc->PacketLoss_burst > BURST_THRES ) + // psEncCtrl->LBRR_usage = SKP_SILK_ADD_LBRR_TO_PLUS2; + //} else { + LBRR_usage = SKP_SILK_ADD_LBRR_TO_PLUS1;//SKP_SILK_NO_LBRR + //} + } + psEncCtrl->sCmn.LBRR_usage = LBRR_usage; + } else { + psEncCtrl->sCmn.LBRR_usage = SKP_SILK_NO_LBRR; + } +} + + diff --git a/libs/silk/src/SKP_Silk_corrMatrix_FIX.c b/libs/silk/src/SKP_Silk_corrMatrix_FIX.c new file mode 100644 index 0000000000..070a338594 --- /dev/null +++ b/libs/silk/src/SKP_Silk_corrMatrix_FIX.c @@ -0,0 +1,172 @@ + + +/*********************************************************************** + +Copyright (c) 2006-2010, Skype Limited. All rights reserved. +Redistribution and use in source and binary forms, with or without +modification, (subject to the limitations in the disclaimer below) +are permitted provided that the following conditions are met: +- Redistributions of source code must retain the above copyright notice, +this list of conditions and the following disclaimer. +- Redistributions in binary form must reproduce the above copyright +notice, this list of conditions and the following disclaimer in the +documentation and/or other materials provided with the distribution. +- Neither the name of Skype Limited, nor the names of specific +contributors, may be used to endorse or promote products derived from +this software without specific prior written permission. +NO EXPRESS OR IMPLIED LICENSES TO ANY PARTY'S PATENT RIGHTS ARE GRANTED +BY THIS LICENSE.THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND +CONTRIBUTORS ''AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, + + + + + +BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND +FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE +COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, +INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT +NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF +USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON +ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT +(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE +OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + +***********************************************************************/ + +/********************************************************************** + * Correlation Matrix Computations for LS estimate. + **********************************************************************/ + +#include "SKP_Silk_main_FIX.h" + +/* Calculates correlation vector X'*t */ +void SKP_Silk_corrVector_FIX( + const SKP_int16 *x, /* I x vector [L + order - 1] used to form data matrix X */ + const SKP_int16 *t, /* I target vector [L] */ + const SKP_int L, /* I Length of vectors */ + const SKP_int order, /* I Max lag for correlation */ + SKP_int32 *Xt, /* O Pointer to X'*t correlation vector [order] */ + const SKP_int rshifts /* I Right shifts of correlations */ +) +{ + SKP_int lag, i; + const SKP_int16 *ptr1, *ptr2; + SKP_int32 inner_prod; + + ptr1 = &x[ order - 1 ]; /* Points to first sample of column 0 of X: X[:,0] */ + ptr2 = t; + /* Calculate X'*t */ + if( rshifts > 0 ) { + /* Right shifting used */ + for( lag = 0; lag < order; lag++ ) { + inner_prod = 0; + for( i = 0; i < L; i++ ) { + inner_prod += SKP_RSHIFT32( SKP_SMULBB( ptr1[ i ], ptr2[i] ), rshifts ); + } + Xt[ lag ] = inner_prod; /* X[:,lag]'*t */ + ptr1--; /* Go to next column of X */ + } + } else { + SKP_assert( rshifts == 0 ); + for( lag = 0; lag < order; lag++ ) { + + + + + + Xt[ lag ] = SKP_Silk_inner_prod_aligned( ptr1, ptr2, L ); /* X[:,lag]'*t */ + ptr1--; /* Go to next column of X */ + } + } +} + +/* Calculates correlation matrix X'*X */ +void SKP_Silk_corrMatrix_FIX( + const SKP_int16 *x, /* I x vector [L + order - 1] used to form data matrix X */ + const SKP_int L, /* I Length of vectors */ + const SKP_int order, /* I Max lag for correlation */ + SKP_int32 *XX, /* O Pointer to X'*X correlation matrix [ order x order ]*/ + SKP_int *rshifts /* I/O Right shifts of correlations */ +) +{ + SKP_int i, j, lag, rshifts_local, head_room_rshifts; + SKP_int32 energy; + const SKP_int16 *ptr1, *ptr2; + + /* Calculate energy to find shift used to fit in 32 bits */ + SKP_Silk_sum_sqr_shift( &energy, &rshifts_local, x, L + order - 1 ); + /* Add shifts to get the wanted head room */ + + head_room_rshifts = SKP_max( LTP_CORRS_HEAD_ROOM - SKP_Silk_CLZ32( energy ), 0 ); + + energy = SKP_RSHIFT32( energy, head_room_rshifts ); + rshifts_local += head_room_rshifts; + + /* Calculate energy of first column (0) of X: X[:,0]'*X[:,0] */ + /* Remove contribution of first order - 1 samples */ + for( i = 0; i < order - 1; i++ ) { + energy -= SKP_RSHIFT32( SKP_SMULBB( x[ i ], x[ i ] ), rshifts_local ); + } + if( rshifts_local < *rshifts ) { + /* Adjust energy */ + energy = SKP_RSHIFT32( energy, *rshifts - rshifts_local ); + rshifts_local = *rshifts; + } + + /* Calculate energy of remaining columns of X: X[:,j]'*X[:,j] */ + /* Fill out the diagonal of the correlation matrix */ + matrix_ptr( XX, 0, 0, order ) = energy; + ptr1 = &x[ order - 1 ]; /* First sample of column 0 of X */ + for( j = 1; j < order; j++ ) { + energy = SKP_SUB32( energy, SKP_RSHIFT32( SKP_SMULBB( ptr1[ L - j ], ptr1[ L - j ] ), rshifts_local ) ); + energy = SKP_ADD32( energy, SKP_RSHIFT32( SKP_SMULBB( ptr1[ -j ], ptr1[ -j ] ), rshifts_local ) ); + matrix_ptr( XX, j, j, order ) = energy; + } + + + + + + ptr2 = &x[ order - 2 ]; /* First sample of column 1 of X */ + /* Calculate the remaining elements of the correlation matrix */ + if( rshifts_local > 0 ) { + /* Right shifting used */ + for( lag = 1; lag < order; lag++ ) { + /* Inner product of column 0 and column lag: X[:,0]'*X[:,lag] */ + energy = 0; + for( i = 0; i < L; i++ ) { + energy += SKP_RSHIFT32( SKP_SMULBB( ptr1[ i ], ptr2[i] ), rshifts_local ); + } + /* Calculate remaining off diagonal: X[:,j]'*X[:,j + lag] */ + matrix_ptr( XX, lag, 0, order ) = energy; + matrix_ptr( XX, 0, lag, order ) = energy; + for( j = 1; j < ( order - lag ); j++ ) { + energy = SKP_SUB32( energy, SKP_RSHIFT32( SKP_SMULBB( ptr1[ L - j ], ptr2[ L - j ] ), rshifts_local ) ); + energy = SKP_ADD32( energy, SKP_RSHIFT32( SKP_SMULBB( ptr1[ -j ], ptr2[ -j ] ), rshifts_local ) ); + matrix_ptr( XX, lag + j, j, order ) = energy; + matrix_ptr( XX, j, lag + j, order ) = energy; + } + ptr2--; /* Update pointer to first sample of next column (lag) in X */ + } + } else { + for( lag = 1; lag < order; lag++ ) { + /* Inner product of column 0 and column lag: X[:,0]'*X[:,lag] */ + energy = SKP_Silk_inner_prod_aligned( ptr1, ptr2, L ); + matrix_ptr( XX, lag, 0, order ) = energy; + matrix_ptr( XX, 0, lag, order ) = energy; + /* Calculate remaining off diagonal: X[:,j]'*X[:,j + lag] */ + for( j = 1; j < ( order - lag ); j++ ) { + energy = SKP_SUB32( energy, SKP_SMULBB( ptr1[ L - j ], ptr2[ L - j ] ) ); + energy = SKP_SMLABB( energy, ptr1[ -j ], ptr2[ -j ] ); + matrix_ptr( XX, lag + j, j, order ) = energy; + matrix_ptr( XX, j, lag + j, order ) = energy; + } + ptr2--;/* Update pointer to first sample of next column (lag) in X */ + } + } + *rshifts = rshifts_local; +} + + + diff --git a/libs/silk/src/SKP_Silk_create_init_destroy.c b/libs/silk/src/SKP_Silk_create_init_destroy.c new file mode 100644 index 0000000000..9fa23d300a --- /dev/null +++ b/libs/silk/src/SKP_Silk_create_init_destroy.c @@ -0,0 +1,70 @@ + + +/*********************************************************************** + +Copyright (c) 2006-2010, Skype Limited. All rights reserved. + + + + + +Redistribution and use in source and binary forms, with or without +modification, (subject to the limitations in the disclaimer below) +are permitted provided that the following conditions are met: +- Redistributions of source code must retain the above copyright notice, +this list of conditions and the following disclaimer. +- Redistributions in binary form must reproduce the above copyright +notice, this list of conditions and the following disclaimer in the +documentation and/or other materials provided with the distribution. +- Neither the name of Skype Limited, nor the names of specific +contributors, may be used to endorse or promote products derived from +this software without specific prior written permission. +NO EXPRESS OR IMPLIED LICENSES TO ANY PARTY'S PATENT RIGHTS ARE GRANTED +BY THIS LICENSE.THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND +CONTRIBUTORS ''AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, +BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND +FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE +COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, +INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT +NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF +USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON +ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT +(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE +OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + +***********************************************************************/ + +#include "SKP_Silk_main.h" + + +/************************/ +/* Init Decoder State */ +/************************/ +SKP_int SKP_Silk_init_decoder( + SKP_Silk_decoder_state *psDec /* I/O Decoder state pointer */ +) +{ + SKP_memset( psDec, 0, sizeof( SKP_Silk_decoder_state ) ); + /* Set sampling rate to 24 kHz, and init non-zero values */ + SKP_Silk_decoder_set_fs( psDec, 24 ); + + /* Used to deactivate e.g. LSF interpolation and fluctuation reduction */ + psDec->first_frame_after_reset = 1; + psDec->prev_inv_gain_Q16 = 65536; + + /* Reset CNG state */ + SKP_Silk_CNG_Reset( psDec ); + + SKP_Silk_PLC_Reset( psDec ); + + + + + + psDec->bitstream_v = USE_BIT_STREAM_V; + + return(0); +} + + + diff --git a/libs/silk/src/SKP_Silk_dec_API.c b/libs/silk/src/SKP_Silk_dec_API.c new file mode 100644 index 0000000000..f1e4df7bfb --- /dev/null +++ b/libs/silk/src/SKP_Silk_dec_API.c @@ -0,0 +1,384 @@ + + +/*********************************************************************** + +Copyright (c) 2006-2010, Skype Limited. All rights reserved. +Redistribution and use in source and binary forms, with or without +modification, (subject to the limitations in the disclaimer below) +are permitted provided that the following conditions are met: +- Redistributions of source code must retain the above copyright notice, +this list of conditions and the following disclaimer. +- Redistributions in binary form must reproduce the above copyright +notice, this list of conditions and the following disclaimer in the +documentation and/or other materials provided with the distribution. +- Neither the name of Skype Limited, nor the names of specific +contributors, may be used to endorse or promote products derived from +this software without specific prior written permission. +NO EXPRESS OR IMPLIED LICENSES TO ANY PARTY'S PATENT RIGHTS ARE GRANTED +BY THIS LICENSE.THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND +CONTRIBUTORS ''AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, +BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND +FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE +COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, +INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT +NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF +USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON +ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT +(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE +OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + +***********************************************************************/ + + +#include "SKP_Silk_SDK_API.h" +#include "SKP_Silk_main_FIX.h" + +/****************************************/ +/* Decoder functions */ +/****************************************/ + +SKP_int SKP_Silk_SDK_Get_Decoder_Size( SKP_int32 *decSizeBytes ) + + + + + +{ + SKP_int ret = 0; + + *decSizeBytes = sizeof( SKP_Silk_decoder_state ); + + return ret; +} + +/* Reset Decoder State */ +SKP_int SKP_Silk_SDK_InitDecoder( + void* decState /* I/O: State */ +) +{ + SKP_int ret = 0; + SKP_Silk_decoder_state *struc; + + struc = (SKP_Silk_decoder_state *)decState; + + ret = SKP_Silk_init_decoder( struc ); + + return ret; +} + +/* Decode a frame */ +SKP_int SKP_Silk_SDK_Decode( + void* decState, /* I/O: State */ + SKP_SILK_SDK_DecControlStruct* decControl, /* I/O: Control Structure */ + SKP_int lostFlag, /* I: 0: no loss, 1 loss */ + const SKP_uint8 *inData, /* I: Encoded input vector */ + const SKP_int nBytesIn, /* I: Number of input Bytes */ + SKP_int16 *samplesOut, /* O: Decoded output speech vector */ + SKP_int16 *nSamplesOut /* I/O: Number of samples (vector/decoded) */ +) +{ + SKP_int ret = 0, used_bytes, prev_fs_kHz; + SKP_Silk_decoder_state *psDec; + + psDec = (SKP_Silk_decoder_state *)decState; + + /*********************************************/ + /* Test if first frame in payload */ + /*********************************************/ + if( psDec->InternalDecoderFrames == 0 ) { + /* First Frame in Payload */ + psDec->nFramesDecoded = 0; /* Used to count frames in packet */ + } + + if( psDec->InternalDecoderFrames == 0 && /* First frame in packet */ + + + + + + lostFlag == 0 && /* Not packet loss */ + nBytesIn > MAX_ARITHM_BYTES ) { /* Too long payload */ + /* Avoid trying to decode a too large packet */ + lostFlag = 1; + ret = SKP_SILK_DEC_PAYLOAD_TOO_LARGE; + } + + /* Save previous sample frequency */ + prev_fs_kHz = psDec->fs_kHz; + + /* Call decoder for one frame */ + ret += SKP_Silk_decode_frame( psDec, samplesOut, nSamplesOut, inData, nBytesIn, + lostFlag, &used_bytes ); + + if( used_bytes ) { /* Only Call if not a packet loss */ + if( psDec->nBytesLeft > 0 && psDec->FrameTermination == SKP_SILK_MORE_FRAMES && psDec->nFramesDecoded < 5 ) { + /* We have more frames in the Payload */ + psDec->InternalDecoderFrames = 1; + } else { + /* Last frame in Payload */ + psDec->InternalDecoderFrames = 0; + psDec->nFramesInPacket = psDec->nFramesDecoded; + + /* Track inband FEC usage */ + if( psDec->vadFlag == VOICE_ACTIVITY ) { + if( psDec->FrameTermination == SKP_SILK_LAST_FRAME ) { + psDec->no_fec_counter++; + if( psDec->no_fec_counter > NO_LBRR_THRES ) { + psDec->inband_fec_offset = 0; + } + } else if( psDec->FrameTermination == SKP_SILK_LBRR_VER1 ) { + psDec->inband_fec_offset = 1; /* FEC info with 1 packet delay */ + psDec->no_fec_counter = 0; + } else if( psDec->FrameTermination == SKP_SILK_LBRR_VER2 ) { + psDec->inband_fec_offset = 2; /* FEC info with 2 packets delay */ + psDec->no_fec_counter = 0; + } + } + } + } + + if( psDec->fs_kHz * 1000 > decControl->sampleRate ) { + ret = SKP_SILK_DEC_WRONG_SAMPLING_FREQUENCY; + } + + /* Do any resampling if needed */ + if( psDec->fs_kHz * 1000 != decControl->sampleRate ) { + SKP_int16 samplesOut_tmp[ 2 * MAX_FRAME_LENGTH ]; + + + + + + SKP_int32 scratch[ 3 * MAX_FRAME_LENGTH ]; + + /* Copy to a tmpbuffer as the resampling writes to samplesOut */ + memcpy( samplesOut_tmp, samplesOut, *nSamplesOut * sizeof( SKP_int16 ) ); + + /* Clear resampler state when switching internal sampling frequency */ + if( prev_fs_kHz != psDec->fs_kHz ) { + SKP_memset( psDec->resampleState, 0, sizeof( psDec->resampleState ) ); + } + + if( psDec->fs_kHz == 16 && decControl->sampleRate == 24000 ) { + /* Resample from 16 kHz to 24 kHz */ + SKP_Silk_resample_3_2( samplesOut, psDec->resampleState, samplesOut_tmp, *nSamplesOut ); + } else if( psDec->fs_kHz == 12 && decControl->sampleRate == 24000 ) { + /* Resample from 12 kHz to 24 kHz */ + SKP_Silk_resample_2_1_coarse( samplesOut_tmp, psDec->resampleState, samplesOut, scratch, *nSamplesOut ); + } else if( psDec->fs_kHz == 8 && decControl->sampleRate == 24000 ) { + /* Resample from 8 kHz to 24 kHz */ + SKP_Silk_resample_3_1( samplesOut, psDec->resampleState, samplesOut_tmp, *nSamplesOut ); + } else if( psDec->fs_kHz == 12 && decControl->sampleRate == 16000 ) { + /* Resample from 12 kHz to 16 kHz */ + SKP_Silk_resample_4_3( samplesOut, psDec->resampleState, samplesOut_tmp, *nSamplesOut ); + } else if( psDec->fs_kHz == 8 && decControl->sampleRate == 16000 ) { + /* Resample from 8 kHz to 16 kHz */ + SKP_Silk_resample_2_1_coarse( samplesOut_tmp, psDec->resampleState, samplesOut, scratch, *nSamplesOut ); + } else if( psDec->fs_kHz == 8 && decControl->sampleRate == 12000 ) { + /* Resample from 8 kHz to 12 kHz */ + SKP_Silk_resample_3_2( samplesOut, psDec->resampleState, samplesOut_tmp, *nSamplesOut ); + } + + *nSamplesOut = SKP_DIV32( (SKP_int32)*nSamplesOut * decControl->sampleRate, psDec->fs_kHz * 1000 ); + } + + /* Copy all parameters that are needed out of internal structure to the control stucture */ + decControl->frameSize = (SKP_int)psDec->frame_length; + decControl->framesPerPacket = (SKP_int)psDec->nFramesInPacket; + decControl->inBandFecOffset = (SKP_int)psDec->inband_fec_offset; + decControl->internalDecoderFrames = (SKP_int)psDec->InternalDecoderFrames; + + return ret; +} + +/* Function to find LBRR information in a packet */ +void SKP_Silk_SDK_search_for_LBRR( + void *decState, /* I/O: State Only used to update statistics */ + const SKP_uint8 *indata, /* I: Encoded input vector */ + const SKP_int16 nBytesIn, /* I: Number of input Bytes */ + SKP_int lost_offset, /* I: Offset from lost packet */ + + + + + + SKP_uint8 *LBRRdata, /* O: FEC payload */ + SKP_int16 *nLBRRBytes /* O: Number of FEC Bytes */ +) +{ + SKP_Silk_decoder_state *psDec; + SKP_Silk_decoder_state sDec; // Local Decoder state to avoid interfering with running decoder */ + SKP_Silk_decoder_control sDecCtrl; + SKP_int i, TempQ[ MAX_FRAME_LENGTH ]; + + psDec = (SKP_Silk_decoder_state *)decState; + + if(lost_offset < 1 || lost_offset > MAX_LBRR_DELAY) { + /* No useful FEC in this packet */ + *nLBRRBytes = 0; + return; + } + + sDec.nFramesDecoded = 0; + sDec.fs_kHz = 0; /* Force update parameters LPC_order etc */ + SKP_memset( sDec.prevNLSF_Q15, 0, MAX_LPC_ORDER * sizeof(SKP_int)); + SKP_Silk_range_dec_init( &sDec.sRC, indata, (SKP_int32)nBytesIn ); + + if( psDec->bitstream_v == BIT_STREAM_V4 ) { /* Silk_v3 payload */ + /* Decode all parameter indices for the whole packet*/ + SKP_Silk_decode_indices_v4( &sDec ); + + /* Is there usable LBRR in this packet */ + *nLBRRBytes = 0; + if((sDec.FrameTermination - 1) & lost_offset && sDec.FrameTermination > 0 && sDec.nBytesLeft >= 0) { + /* The Wanted FEC is present in the packet */ + for( i = 0; i < sDec.nFramesInPacket; i++ ){ + SKP_Silk_decode_parameters_v4( &sDec, &sDecCtrl, TempQ, 0 ); + + if( sDec.nBytesLeft <= 0 || sDec.sRC.error ) { + /* Corrupt stream */ + LBRRdata = NULL; + *nLBRRBytes = 0; + break; + }else{ + sDec.nFramesDecoded++; + } + } + + if( LBRRdata != NULL ){ + /* The Wanted FEC is present in the packet */ + *nLBRRBytes = sDec.nBytesLeft; + SKP_memcpy( LBRRdata, &indata[nBytesIn - sDec.nBytesLeft], sDec.nBytesLeft * sizeof(SKP_uint8)); + } + + + + + + } + } else { /* Silk_v3 payload */ + while(1) { + SKP_Silk_decode_parameters( &sDec, &sDecCtrl, TempQ, 0 ); + + if( sDec.sRC.error ) { + /* Corrupt stream */ + *nLBRRBytes = 0; + return; + }; + + if((sDec.FrameTermination - 1) & lost_offset && sDec.FrameTermination > 0 && sDec.nBytesLeft >= 0) { + /* The Wanted FEC is present in the packet */ + *nLBRRBytes = sDec.nBytesLeft; + SKP_memcpy( LBRRdata, &indata[nBytesIn - sDec.nBytesLeft], sDec.nBytesLeft * sizeof(SKP_uint8)); + break; + } + if(sDec.nBytesLeft > 0 && sDec.FrameTermination == SKP_SILK_MORE_FRAMES) { + sDec.nFramesDecoded++; + }else{ + LBRRdata = NULL; + *nLBRRBytes = 0; + break; + } + } + } +} + +/* Getting type of content for a packet */ +void SKP_Silk_SDK_get_TOC( + void *decState, /* I/O: State Only used to select bitstream version */ + const SKP_uint8 *indata, /* I: Encoded input vector */ + const SKP_int16 nBytesIn, /* I: Number of input Bytes */ + SKP_Silk_TOC_struct *Silk_TOC /* O: Type of content */ +) +{ + SKP_Silk_decoder_state *psDec; + SKP_Silk_decoder_state sDec; // Local Decoder state to avoid interfering with running decoder */ + SKP_Silk_decoder_control sDecCtrl; + SKP_int i, TempQ[MAX_FRAME_LENGTH]; + + psDec = (SKP_Silk_decoder_state *)decState; + + sDec.nFramesDecoded = 0; + sDec.fs_kHz = 0; /* Force update parameters LPC_order etc */ + SKP_Silk_range_dec_init( &sDec.sRC, indata, (SKP_int32)nBytesIn ); + + if( psDec->bitstream_v == BIT_STREAM_V4 ) { /* Silk_v4 payload */ + + + + + + /* Decode all parameter indices for the whole packet*/ + SKP_Silk_decode_indices_v4( &sDec ); + + if( sDec.nFramesInPacket > SILK_MAX_FRAMES_PER_PACKET || sDec.sRC.error ) { + /* Corrupt packet */ + SKP_memset( Silk_TOC, 0, sizeof(SKP_Silk_TOC_struct) ); + Silk_TOC->corrupt = 1; + } else{ + Silk_TOC->corrupt = 0; + Silk_TOC->framesInPacket = sDec.nFramesInPacket; + Silk_TOC->fs_kHz = sDec.fs_kHz; + if( sDec.FrameTermination == SKP_SILK_LAST_FRAME ) { + Silk_TOC->inbandLBRR = sDec.FrameTermination; + } else { + Silk_TOC->inbandLBRR = sDec.FrameTermination - 1; + } + /* use memcpy */ + for( i = 0; i < sDec.nFramesInPacket; i++ ){ + Silk_TOC->vadFlags[ i ] = sDec.vadFlagBuf[ i ]; + Silk_TOC->sigtypeFlags[ i ] = sDec.sigtype[ i ]; + } + } + } else { /* Silk_v3 payload */ + Silk_TOC->corrupt = 0; + while(1) { + SKP_Silk_decode_parameters( &sDec, &sDecCtrl, TempQ, 0 ); + + Silk_TOC->vadFlags[ sDec.nFramesDecoded ] = sDec.vadFlag; + Silk_TOC->sigtypeFlags[ sDec.nFramesDecoded ] = sDecCtrl.sigtype; + + if( sDec.sRC.error ) { + /* Corrupt stream */ + Silk_TOC->corrupt = 1; + break; + }; + + if(sDec.nBytesLeft > 0 && sDec.FrameTermination == SKP_SILK_MORE_FRAMES) { + sDec.nFramesDecoded++; + }else{ + break; + } + } + if( Silk_TOC->corrupt || sDec.FrameTermination == SKP_SILK_MORE_FRAMES || + sDec.nFramesInPacket > SILK_MAX_FRAMES_PER_PACKET ) { + /* corrupt packet */ + SKP_memset( Silk_TOC, 0, sizeof(SKP_Silk_TOC_struct) ); + Silk_TOC->corrupt = 1; + } else { + + + + + + Silk_TOC->framesInPacket = sDec.nFramesDecoded; + Silk_TOC->fs_kHz = sDec.fs_kHz; + if( sDec.FrameTermination == SKP_SILK_LAST_FRAME ) { + Silk_TOC->inbandLBRR = sDec.FrameTermination; + } else { + Silk_TOC->inbandLBRR = sDec.FrameTermination - 1; + } + } + } +} + +/*********************************/ +/* Get the version number */ +/*********************************/ +/* Return a pointer to string specifying the version */ +const char *SKP_Silk_SDK_get_version() +{ + static const char version[] = "1.0.2"; + return version; +} + diff --git a/libs/silk/src/SKP_Silk_decode_core.c b/libs/silk/src/SKP_Silk_decode_core.c new file mode 100644 index 0000000000..0c2ce51e01 --- /dev/null +++ b/libs/silk/src/SKP_Silk_decode_core.c @@ -0,0 +1,285 @@ + + +/*********************************************************************** + +Copyright (c) 2006-2010, Skype Limited. All rights reserved. +Redistribution and use in source and binary forms, with or without +modification, (subject to the limitations in the disclaimer below) +are permitted provided that the following conditions are met: +- Redistributions of source code must retain the above copyright notice, +this list of conditions and the following disclaimer. +- Redistributions in binary form must reproduce the above copyright +notice, this list of conditions and the following disclaimer in the +documentation and/or other materials provided with the distribution. +- Neither the name of Skype Limited, nor the names of specific +contributors, may be used to endorse or promote products derived from +this software without specific prior written permission. +NO EXPRESS OR IMPLIED LICENSES TO ANY PARTY'S PATENT RIGHTS ARE GRANTED +BY THIS LICENSE.THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND +CONTRIBUTORS ''AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, +BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND +FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE +COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, +INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT +NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF +USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON +ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT + + + + + +(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE +OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + +***********************************************************************/ + +#include "SKP_Silk_main.h" + +/**********************************************************/ +/* Core Decoder. Performs inverse NSQ operation LTP + LPC */ +/**********************************************************/ +void SKP_Silk_decode_core( + SKP_Silk_decoder_state *psDec, /* I/O Decoder state */ + SKP_Silk_decoder_control *psDecCtrl, /* I Decoder control */ + SKP_int16 xq[], /* O Decoded Speech */ + const SKP_int q[ MAX_FRAME_LENGTH ]/* I Pulse signal */ +) +{ + SKP_int i, k, lag = 0, start_idx, NLSF_interpolation_flag, sigtype, LTP_scale_Q14; + SKP_int16 *A_Q12, *B_Q14, *pxq, A_Q12_tmp[ MAX_LPC_ORDER ]; + SKP_int16 sLTP[ MAX_FRAME_LENGTH ]; + SKP_int32 Gain_Q16, *pred_lag_ptr, *pexc_Q10, *pres_Q10, LTP_pred_Q14, LPC_pred_Q10; + SKP_int32 rand_seed, offset_Q10, dither; + SKP_int32 vec_Q10[ MAX_FRAME_LENGTH / NB_SUBFR ], Atmp; + SKP_int32 inv_gain_Q16, inv_gain_Q32, gain_adj_Q16, FiltState[MAX_LPC_ORDER]; + SKP_assert( psDec->prev_inv_gain_Q16 != 0 ); + + offset_Q10 = SKP_Silk_Quantization_Offsets_Q10[ psDecCtrl->sigtype ][ psDecCtrl->QuantOffsetType ]; + + if( psDecCtrl->NLSFInterpCoef_Q2 < ( 1 << 2 ) ) { + NLSF_interpolation_flag = 1; + } else { + NLSF_interpolation_flag = 0; + } + + + /* Decode excitation */ + rand_seed = psDecCtrl->Seed; + for( i = 0; i < psDec->frame_length; i++ ) { + rand_seed = SKP_RAND( rand_seed ); + /* dither = rand_seed < 0 ? 0xFFFFFFFF : 0; */ + dither = SKP_RSHIFT( rand_seed, 31 ); + + psDec->exc_Q10[ i ] = SKP_LSHIFT( (SKP_int32)q[ i ], 10 ) + offset_Q10; + psDec->exc_Q10[ i ] = ( psDec->exc_Q10[ i ] ^ dither ) - dither; + + rand_seed += q[ i ]; + } + + + + + + + pexc_Q10 = psDec->exc_Q10; + pres_Q10 = psDec->res_Q10; + pxq = &psDec->outBuf[ psDec->frame_length ]; + psDec->sLTP_buf_idx = psDec->frame_length; + /* Loop over subframes */ + for( k = 0; k < NB_SUBFR; k++ ) { + A_Q12 = psDecCtrl->PredCoef_Q12[ k >> 1 ]; + /* Preload LPC coeficients to array on stack. Gives small performance gain */ + SKP_memcpy( A_Q12_tmp, A_Q12, psDec->LPC_order * sizeof(SKP_int16) ); + B_Q14 = &psDecCtrl->LTPCoef_Q14[ k * LTP_ORDER ]; + Gain_Q16 = psDecCtrl->Gains_Q16[ k ]; + LTP_scale_Q14 = psDecCtrl->LTP_scale_Q14; + sigtype = psDecCtrl->sigtype; + + inv_gain_Q16 = SKP_DIV32( SKP_int32_MAX, SKP_RSHIFT( Gain_Q16, 1 ) ); + inv_gain_Q16 = SKP_min( inv_gain_Q16, SKP_int16_MAX ); + + /* Calculate Gain adjustment factor */ + gain_adj_Q16 = (SKP_int32)1 << 16; + if( inv_gain_Q16 != psDec->prev_inv_gain_Q16 ) { + gain_adj_Q16 = SKP_DIV32_varQ( inv_gain_Q16, psDec->prev_inv_gain_Q16, 16 ); + } + + /* Avoid abroupt transition from voiced PLC to unvoiced normal decoding */ + if( psDec->lossCnt && psDec->prev_sigtype == SIG_TYPE_VOICED && + psDecCtrl->sigtype == SIG_TYPE_UNVOICED && k < (NB_SUBFR >> 1)) { + + SKP_memset( B_Q14, 0, LTP_ORDER * sizeof(SKP_int16) ); + B_Q14[ LTP_ORDER/2 ] = (SKP_int16)1 << 12; /* 0.25 */ + + sigtype = SIG_TYPE_VOICED; + psDecCtrl->pitchL[ k ] = psDec->lagPrev; + LTP_scale_Q14 = (SKP_int)1 << 14; + } + if( sigtype == SIG_TYPE_VOICED ) { + /* Voiced */ + + lag = psDecCtrl->pitchL[ k ]; + /* Re-whitening */ + if( ( k & ( 3 - SKP_LSHIFT( NLSF_interpolation_flag, 1 ) ) ) == 0 ) { + /* Rewhiten with new A coefs */ + start_idx = psDec->frame_length - lag - psDec->LPC_order - LTP_ORDER / 2; + start_idx = SKP_LIMIT( start_idx, 0, psDec->frame_length - psDec->LPC_order ); // Limit + + SKP_Silk_MA_Prediction( &psDec->outBuf[ start_idx + k * ( psDec->frame_length >> 2 ) ], + A_Q12, FiltState, sLTP + start_idx, psDec->frame_length - start_idx, psDec->LPC_order ); + + /* After rewhitening the LTP state is un-scaled */ + + + + + + inv_gain_Q32 = SKP_LSHIFT( inv_gain_Q16, 16 ); + if( k == 0 ) { + /* Do LTP downscaling */ + inv_gain_Q32 = SKP_LSHIFT( SKP_SMULWB( inv_gain_Q32, psDecCtrl->LTP_scale_Q14 ), 2 ); + } + for( i = 0; i < (lag + LTP_ORDER/2); i++ ) { + psDec->sLTP_Q16[ psDec->sLTP_buf_idx - i - 1 ] = SKP_SMULWB( inv_gain_Q32, sLTP[ psDec->frame_length - i - 1 ] ); + } + } else { + /* Update LTP state when Gain changes */ + if( gain_adj_Q16 != (SKP_int32)1 << 16 ) { + for( i = 0; i < ( lag + LTP_ORDER / 2 ); i++ ) { + psDec->sLTP_Q16[ psDec->sLTP_buf_idx - i - 1 ] = SKP_SMULWW( gain_adj_Q16, psDec->sLTP_Q16[ psDec->sLTP_buf_idx - i - 1 ] ); + } + } + } + } + + /* scale short term state */ + for( i = 0; i < MAX_LPC_ORDER; i++ ) { + psDec->sLPC_Q14[ i ] = SKP_SMULWW( gain_adj_Q16, psDec->sLPC_Q14[ i ] ); + } + + /* save inv_gain */ + SKP_assert( inv_gain_Q16 != 0 ); + psDec->prev_inv_gain_Q16 = inv_gain_Q16; + + + /* Long-term prediction */ + if( sigtype == SIG_TYPE_VOICED ) { + /* Setup pointer */ + pred_lag_ptr = &psDec->sLTP_Q16[ psDec->sLTP_buf_idx - lag + LTP_ORDER / 2 ]; + for( i = 0; i < psDec->subfr_length; i++ ) { + /* Unrolled loop */ + LTP_pred_Q14 = SKP_SMULWB( pred_lag_ptr[ 0 ], B_Q14[ 0 ] ); + LTP_pred_Q14 = SKP_SMLAWB( LTP_pred_Q14, pred_lag_ptr[ -1 ], B_Q14[ 1 ] ); + LTP_pred_Q14 = SKP_SMLAWB( LTP_pred_Q14, pred_lag_ptr[ -2 ], B_Q14[ 2 ] ); + LTP_pred_Q14 = SKP_SMLAWB( LTP_pred_Q14, pred_lag_ptr[ -3 ], B_Q14[ 3 ] ); + LTP_pred_Q14 = SKP_SMLAWB( LTP_pred_Q14, pred_lag_ptr[ -4 ], B_Q14[ 4 ] ); + pred_lag_ptr++; + + /* Generate LPC residual */ + pres_Q10[ i ] = SKP_ADD32( pexc_Q10[ i ], SKP_RSHIFT_ROUND( LTP_pred_Q14, 4 ) ); + + /* Update states */ + psDec->sLTP_Q16[ psDec->sLTP_buf_idx ] = SKP_LSHIFT( pres_Q10[ i ], 6 ); + psDec->sLTP_buf_idx++; + } + + + + + + } else { + SKP_memcpy( pres_Q10, pexc_Q10, psDec->subfr_length * sizeof( SKP_int32 ) ); + } + + + /* Short term prediction */ + /* NOTE: the code below loads two int16 values in an int32, and multiplies each using the */ + /* SMLAWB and SMLAWT instructions. On a big-endian CPU the two int16 variables would be */ + /* loaded in reverse order and the code will give the wrong result. In that case swapping */ + /* the SMLAWB and SMLAWT instructions should solve the problem. */ + if( psDec->LPC_order == 16 ) { + for( i = 0; i < psDec->subfr_length; i++ ) { + /* unrolled */ + Atmp = *( (SKP_int32*)&A_Q12_tmp[ 0 ] ); /* read two coefficients at once */ + LPC_pred_Q10 = SKP_SMULWB( psDec->sLPC_Q14[ MAX_LPC_ORDER + i - 1 ], Atmp ); + LPC_pred_Q10 = SKP_SMLAWT( LPC_pred_Q10, psDec->sLPC_Q14[ MAX_LPC_ORDER + i - 2 ], Atmp ); + Atmp = *( (SKP_int32*)&A_Q12_tmp[ 2 ] ); + LPC_pred_Q10 = SKP_SMLAWB( LPC_pred_Q10, psDec->sLPC_Q14[ MAX_LPC_ORDER + i - 3 ], Atmp ); + LPC_pred_Q10 = SKP_SMLAWT( LPC_pred_Q10, psDec->sLPC_Q14[ MAX_LPC_ORDER + i - 4 ], Atmp ); + Atmp = *( (SKP_int32*)&A_Q12_tmp[ 4 ] ); + LPC_pred_Q10 = SKP_SMLAWB( LPC_pred_Q10, psDec->sLPC_Q14[ MAX_LPC_ORDER + i - 5 ], Atmp ); + LPC_pred_Q10 = SKP_SMLAWT( LPC_pred_Q10, psDec->sLPC_Q14[ MAX_LPC_ORDER + i - 6 ], Atmp ); + Atmp = *( (SKP_int32*)&A_Q12_tmp[ 6 ] ); + LPC_pred_Q10 = SKP_SMLAWB( LPC_pred_Q10, psDec->sLPC_Q14[ MAX_LPC_ORDER + i - 7 ], Atmp ); + LPC_pred_Q10 = SKP_SMLAWT( LPC_pred_Q10, psDec->sLPC_Q14[ MAX_LPC_ORDER + i - 8 ], Atmp ); + Atmp = *( (SKP_int32*)&A_Q12_tmp[ 8 ] ); + LPC_pred_Q10 = SKP_SMLAWB( LPC_pred_Q10, psDec->sLPC_Q14[ MAX_LPC_ORDER + i - 9 ], Atmp ); + LPC_pred_Q10 = SKP_SMLAWT( LPC_pred_Q10, psDec->sLPC_Q14[ MAX_LPC_ORDER + i - 10 ], Atmp ); + Atmp = *( (SKP_int32*)&A_Q12_tmp[ 10 ] ); + LPC_pred_Q10 = SKP_SMLAWB( LPC_pred_Q10, psDec->sLPC_Q14[ MAX_LPC_ORDER + i - 11 ], Atmp ); + LPC_pred_Q10 = SKP_SMLAWT( LPC_pred_Q10, psDec->sLPC_Q14[ MAX_LPC_ORDER + i - 12 ], Atmp ); + Atmp = *( (SKP_int32*)&A_Q12_tmp[ 12 ] ); + LPC_pred_Q10 = SKP_SMLAWB( LPC_pred_Q10, psDec->sLPC_Q14[ MAX_LPC_ORDER + i - 13 ], Atmp ); + LPC_pred_Q10 = SKP_SMLAWT( LPC_pred_Q10, psDec->sLPC_Q14[ MAX_LPC_ORDER + i - 14 ], Atmp ); + Atmp = *( (SKP_int32*)&A_Q12_tmp[ 14 ] ); + LPC_pred_Q10 = SKP_SMLAWB( LPC_pred_Q10, psDec->sLPC_Q14[ MAX_LPC_ORDER + i - 15 ], Atmp ); + LPC_pred_Q10 = SKP_SMLAWT( LPC_pred_Q10, psDec->sLPC_Q14[ MAX_LPC_ORDER + i - 16 ], Atmp ); + + /* Add prediction to LPC residual */ + vec_Q10[ i ] = SKP_ADD32( pres_Q10[ i ], LPC_pred_Q10 ); + + /* Update states */ + psDec->sLPC_Q14[ MAX_LPC_ORDER + i ] = SKP_LSHIFT( vec_Q10[ i ], 4 ); + } + } else { + SKP_assert( psDec->LPC_order == 10 ); + for( i = 0; i < psDec->subfr_length; i++ ) { + /* unrolled */ + + + + + + Atmp = *( (SKP_int32*)&A_Q12_tmp[ 0 ] ); /* read two coefficients at once */ + LPC_pred_Q10 = SKP_SMULWB( psDec->sLPC_Q14[ MAX_LPC_ORDER + i - 1 ], Atmp ); + LPC_pred_Q10 = SKP_SMLAWT( LPC_pred_Q10, psDec->sLPC_Q14[ MAX_LPC_ORDER + i - 2 ], Atmp ); + Atmp = *( (SKP_int32*)&A_Q12_tmp[ 2 ] ); + LPC_pred_Q10 = SKP_SMLAWB( LPC_pred_Q10, psDec->sLPC_Q14[ MAX_LPC_ORDER + i - 3 ], Atmp ); + LPC_pred_Q10 = SKP_SMLAWT( LPC_pred_Q10, psDec->sLPC_Q14[ MAX_LPC_ORDER + i - 4 ], Atmp ); + Atmp = *( (SKP_int32*)&A_Q12_tmp[ 4 ] ); + LPC_pred_Q10 = SKP_SMLAWB( LPC_pred_Q10, psDec->sLPC_Q14[ MAX_LPC_ORDER + i - 5 ], Atmp ); + LPC_pred_Q10 = SKP_SMLAWT( LPC_pred_Q10, psDec->sLPC_Q14[ MAX_LPC_ORDER + i - 6 ], Atmp ); + Atmp = *( (SKP_int32*)&A_Q12_tmp[ 6 ] ); + LPC_pred_Q10 = SKP_SMLAWB( LPC_pred_Q10, psDec->sLPC_Q14[ MAX_LPC_ORDER + i - 7 ], Atmp ); + LPC_pred_Q10 = SKP_SMLAWT( LPC_pred_Q10, psDec->sLPC_Q14[ MAX_LPC_ORDER + i - 8 ], Atmp ); + Atmp = *( (SKP_int32*)&A_Q12_tmp[ 8 ] ); + LPC_pred_Q10 = SKP_SMLAWB( LPC_pred_Q10, psDec->sLPC_Q14[ MAX_LPC_ORDER + i - 9 ], Atmp ); + LPC_pred_Q10 = SKP_SMLAWT( LPC_pred_Q10, psDec->sLPC_Q14[ MAX_LPC_ORDER + i - 10 ], Atmp ); + + /* Add prediction to LPC residual */ + vec_Q10[ i ] = SKP_ADD32( pres_Q10[ i ], LPC_pred_Q10 ); + + /* Update states */ + psDec->sLPC_Q14[ MAX_LPC_ORDER + i ] = SKP_LSHIFT( vec_Q10[ i ], 4 ); + } + } + + /* Scale with Gain */ + for( i = 0; i < psDec->subfr_length; i++ ) { + pxq[ i ] = (SKP_int16)SKP_SAT16( SKP_RSHIFT_ROUND( SKP_SMULWW( vec_Q10[ i ], Gain_Q16 ), 10 ) ); + } + + /* Update LPC filter state */ + SKP_memcpy( psDec->sLPC_Q14, &psDec->sLPC_Q14[ psDec->subfr_length ], MAX_LPC_ORDER * sizeof( SKP_int32 ) ); + pexc_Q10 += psDec->subfr_length; + pres_Q10 += psDec->subfr_length; + pxq += psDec->subfr_length; + } + + /* Copy to output */ + SKP_memcpy( xq, &psDec->outBuf[ psDec->frame_length ], psDec->frame_length * sizeof( SKP_int16 ) ); + +} + + diff --git a/libs/silk/src/SKP_Silk_decode_frame.c b/libs/silk/src/SKP_Silk_decode_frame.c new file mode 100644 index 0000000000..84a74a8ca4 --- /dev/null +++ b/libs/silk/src/SKP_Silk_decode_frame.c @@ -0,0 +1,193 @@ + + +/*********************************************************************** + +Copyright (c) 2006-2010, Skype Limited. All rights reserved. + + + + + +Redistribution and use in source and binary forms, with or without +modification, (subject to the limitations in the disclaimer below) +are permitted provided that the following conditions are met: +- Redistributions of source code must retain the above copyright notice, +this list of conditions and the following disclaimer. +- Redistributions in binary form must reproduce the above copyright +notice, this list of conditions and the following disclaimer in the +documentation and/or other materials provided with the distribution. +- Neither the name of Skype Limited, nor the names of specific +contributors, may be used to endorse or promote products derived from +this software without specific prior written permission. +NO EXPRESS OR IMPLIED LICENSES TO ANY PARTY'S PATENT RIGHTS ARE GRANTED +BY THIS LICENSE.THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND +CONTRIBUTORS ''AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, +BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND +FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE +COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, +INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT +NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF +USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON +ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT +(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE +OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + +***********************************************************************/ + + +#include "SKP_Silk_main.h" +#include "SKP_Silk_PLC.h" + +/****************/ +/* Decode frame */ +/****************/ +SKP_int SKP_Silk_decode_frame( + SKP_Silk_decoder_state *psDec, /* I/O Pointer to Silk decoder state */ + SKP_int16 pOut[], /* O Pointer to output speech frame */ + SKP_int16 *pN, /* O Pointer to size of output frame */ + const SKP_uint8 pCode[], /* I Pointer to payload */ + const SKP_int nBytes, /* I Payload length */ + SKP_int action, /* I Action from Jitter Buffer */ + SKP_int *decBytes /* O Used bytes to decode this frame */ +) +{ + SKP_Silk_decoder_control sDecCtrl; + SKP_int L, fs_Khz_old, LPC_order_old, ret = 0; + SKP_int Pulses[ MAX_FRAME_LENGTH ]; + + + + + + + + L = psDec->frame_length; + sDecCtrl.LTP_scale_Q14 = 0; + + /* Safety checks */ + SKP_assert( L > 0 && L <= MAX_FRAME_LENGTH ); + + /********************************************/ + /* Decode Frame if packet is not lost */ + /********************************************/ + *decBytes = 0; + if( action == 0 ) { + /********************************************/ + /* Initialize arithmetic coder */ + /********************************************/ + fs_Khz_old = psDec->fs_kHz; + LPC_order_old = psDec->LPC_order; + if( psDec->nFramesDecoded == 0 ) { + /* Initialize range decoder state */ + SKP_Silk_range_dec_init( &psDec->sRC, pCode, nBytes ); + + if( psDec->bitstream_v == BIT_STREAM_V4 ) { + SKP_Silk_decode_indices_v4( psDec ); + } + } + + /********************************************/ + /* Decode parameters and pulse signal */ + /********************************************/ + if( psDec->bitstream_v == BIT_STREAM_V4 ) { + SKP_Silk_decode_parameters_v4( psDec, &sDecCtrl, Pulses, 1 ); + } else { + SKP_Silk_decode_parameters( psDec, &sDecCtrl, Pulses, 1 ); + } + + + if( psDec->sRC.error ) { + psDec->nBytesLeft = 0; + + action = 1; /* PLC operation */ + psDec->fs_kHz = fs_Khz_old; /* revert fs if changed in decode_parameters */ + psDec->LPC_order = LPC_order_old; /* revert lpc_order if changed in decode_parameters */ + psDec->frame_length = fs_Khz_old * FRAME_LENGTH_MS; + psDec->subfr_length = fs_Khz_old * FRAME_LENGTH_MS / NB_SUBFR; + + /* Avoid crashing */ + *decBytes = psDec->sRC.bufferLength; + + if( psDec->sRC.error == RANGE_CODER_DEC_PAYLOAD_TOO_LONG ) { + + + + + + ret = SKP_SILK_DEC_PAYLOAD_TOO_LARGE; + } else { + ret = SKP_SILK_DEC_PAYLOAD_ERROR; + } + } else { + *decBytes = psDec->sRC.bufferLength - psDec->nBytesLeft; + psDec->nFramesDecoded++; + + /* Update lengths. Sampling frequency could have changed */ + L = psDec->frame_length; + + /********************************************************/ + /* Run inverse NSQ */ + /********************************************************/ + SKP_Silk_decode_core( psDec, &sDecCtrl, pOut, Pulses ); + + /********************************************************/ + /* Update PLC state */ + /********************************************************/ + SKP_Silk_PLC( psDec, &sDecCtrl, pOut, L, action ); + + psDec->lossCnt = 0; + psDec->prev_sigtype = sDecCtrl.sigtype; + + /* A frame has been decoded without errors */ + psDec->first_frame_after_reset = 0; + } + } + /*************************************************************/ + /* Generate Concealment Frame if packet is lost, or corrupt */ + /*************************************************************/ + if( action == 1 ) { + /* Handle packet loss by extrapolation */ + SKP_Silk_PLC( psDec, &sDecCtrl, pOut, L, action ); + psDec->lossCnt++; + + } + + /*************************/ + /* Update output buffer. */ + /*************************/ + SKP_memcpy( psDec->outBuf, pOut, L * sizeof( SKP_int16 ) ); + + /****************************************************************/ + /* Ensure smooth connection of extrapolated and good frames */ + /****************************************************************/ + SKP_Silk_PLC_glue_frames( psDec, &sDecCtrl, pOut, L ); + + + + + + + /************************************************/ + /* Comfort noise generation / estimation */ + /************************************************/ + SKP_Silk_CNG( psDec, &sDecCtrl, pOut , L ); + + /********************************************/ + /* HP filter output */ + /********************************************/ + SKP_assert( ( ( psDec->fs_kHz == 12 ) && ( L % 3 ) == 0 ) || + ( ( psDec->fs_kHz != 12 ) && ( L % 2 ) == 0 ) ); + SKP_Silk_biquad( pOut, psDec->HP_B, psDec->HP_A, psDec->HPState, pOut, L ); + + /********************************************/ + /* set output frame length */ + /********************************************/ + *pN = (SKP_int16)L; + + /* Update some decoder state variables */ + psDec->lagPrev = sDecCtrl.pitchL[ NB_SUBFR - 1 ]; + + return ret; +} + + diff --git a/libs/silk/src/SKP_Silk_decode_indices_v4.c b/libs/silk/src/SKP_Silk_decode_indices_v4.c new file mode 100644 index 0000000000..d0ab939c1b --- /dev/null +++ b/libs/silk/src/SKP_Silk_decode_indices_v4.c @@ -0,0 +1,221 @@ + + +/*********************************************************************** + +Copyright (c) 2006-2010, Skype Limited. All rights reserved. +Redistribution and use in source and binary forms, with or without +modification, (subject to the limitations in the disclaimer below) +are permitted provided that the following conditions are met: +- Redistributions of source code must retain the above copyright notice, +this list of conditions and the following disclaimer. +- Redistributions in binary form must reproduce the above copyright +notice, this list of conditions and the following disclaimer in the +documentation and/or other materials provided with the distribution. +- Neither the name of Skype Limited, nor the names of specific +contributors, may be used to endorse or promote products derived from +this software without specific prior written permission. +NO EXPRESS OR IMPLIED LICENSES TO ANY PARTY'S PATENT RIGHTS ARE GRANTED +BY THIS LICENSE.THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND +CONTRIBUTORS ''AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, +BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND +FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE +COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, +INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT + + + + + +NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF +USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON +ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT +(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE +OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + +***********************************************************************/ + +#include "SKP_Silk_main.h" + +/* Decode indices from payload */ +void SKP_Silk_decode_indices_v4( + SKP_Silk_decoder_state *psDec /* I/O....State */ +) +{ + SKP_int i, k, Ix, fs_kHz_dec, FramesInPacket = 0, FrameTermination; + SKP_int sigtype, QuantOffsetType, seed_int, nBytesUsed; + SKP_int decode_absolute_lagIndex, delta_lagIndex, prev_lagIndex = 0; + const SKP_Silk_NLSF_CB_struct *psNLSF_CB = NULL; + SKP_Silk_range_coder_state *psRC = &psDec->sRC; + /************************/ + /* Decode sampling rate */ + /************************/ + /* only done for first frame of packet */ + if( psDec->nFramesDecoded == 0 ) { + SKP_Silk_range_decoder( &Ix, psRC, SKP_Silk_SamplingRates_CDF, SKP_Silk_SamplingRates_offset ); + + /* check that sampling rate is supported */ + if( Ix < 0 || Ix > 3 ) { + psRC->error = RANGE_CODER_ILLEGAL_SAMPLING_RATE; + return; + } + fs_kHz_dec = SKP_Silk_SamplingRates_table[ Ix ]; + SKP_Silk_decoder_set_fs( psDec, fs_kHz_dec ); + + FramesInPacket = 0; + FrameTermination = SKP_SILK_MORE_FRAMES; + } + + while( FrameTermination == SKP_SILK_MORE_FRAMES ) { + /*********************************************/ + /* Decode VAD flag */ + /*********************************************/ + SKP_Silk_range_decoder( &psDec->vadFlagBuf[ FramesInPacket ], psRC, SKP_Silk_vadflag_CDF, SKP_Silk_vadflag_offset ); + + /*******************************************/ + /* Decode signal type and quantizer offset */ + /*******************************************/ + + + + + + if( FramesInPacket == 0 ) { + /* first frame in packet: independent coding */ + SKP_Silk_range_decoder( &Ix, psRC, SKP_Silk_type_offset_CDF, SKP_Silk_type_offset_CDF_offset ); + } else { + /* condidtional coding */ + SKP_Silk_range_decoder( &Ix, psRC, SKP_Silk_type_offset_joint_CDF[ psDec->typeOffsetPrev ], + SKP_Silk_type_offset_CDF_offset ); + } + sigtype = SKP_RSHIFT( Ix, 1 ); + QuantOffsetType = Ix & 1; + psDec->typeOffsetPrev = Ix; + + /****************/ + /* Decode gains */ + /****************/ + /* first subframe */ + if( FramesInPacket == 0 ) { + /* first frame in packet: independent coding */ + SKP_Silk_range_decoder( &psDec->GainsIndices[ FramesInPacket ][ 0 ], psRC, SKP_Silk_gain_CDF[ sigtype ], SKP_Silk_gain_CDF_offset ); + } else { + /* condidtional coding */ + SKP_Silk_range_decoder( &psDec->GainsIndices[ FramesInPacket ][ 0 ], psRC, SKP_Silk_delta_gain_CDF, SKP_Silk_delta_gain_CDF_offset ); + } + + /* remaining subframes */ + for( i = 1; i < NB_SUBFR; i++ ) { + SKP_Silk_range_decoder( &psDec->GainsIndices[ FramesInPacket ][ i ], psRC, SKP_Silk_delta_gain_CDF, SKP_Silk_delta_gain_CDF_offset ); + } + + /**********************/ + /* Decode LSF Indices */ + /**********************/ + + /* Set pointer to LSF VQ CB for the current signal type */ + psNLSF_CB = psDec->psNLSF_CB[ sigtype ]; + + /* Arithmetically decode NLSF path */ + SKP_Silk_range_decoder_multi( psDec->NLSFIndices[ FramesInPacket ], psRC, psNLSF_CB->StartPtr, psNLSF_CB->MiddleIx, psNLSF_CB->nStages ); + + /***********************************/ + /* Decode LSF interpolation factor */ + /***********************************/ + SKP_Silk_range_decoder( &psDec->NLSFInterpCoef_Q2[ FramesInPacket ], psRC, SKP_Silk_NLSF_interpolation_factor_CDF, + SKP_Silk_NLSF_interpolation_factor_offset ); + + if( sigtype == SIG_TYPE_VOICED ) { + /*********************/ + /* Decode pitch lags */ + + + + + + /*********************/ + /* Get lag index */ + decode_absolute_lagIndex = 1; + if( FramesInPacket > 0 && psDec->sigtype[ FramesInPacket - 1 ] == SIG_TYPE_VOICED ) { + /* Decode Delta index */ + SKP_Silk_range_decoder( &delta_lagIndex,psRC, SKP_Silk_pitch_delta_CDF, SKP_Silk_pitch_delta_CDF_offset ); + if( delta_lagIndex < ( MAX_DELTA_LAG << 1 ) + 1 ) { + delta_lagIndex = delta_lagIndex - MAX_DELTA_LAG; + psDec->lagIndex[ FramesInPacket ] = prev_lagIndex + delta_lagIndex; + decode_absolute_lagIndex = 0; + } + } + if( decode_absolute_lagIndex ) { + /* Absolute decoding */ + if( psDec->fs_kHz == 8 ) { + SKP_Silk_range_decoder( &psDec->lagIndex[ FramesInPacket ], psRC, SKP_Silk_pitch_lag_NB_CDF, SKP_Silk_pitch_lag_NB_CDF_offset ); + } else if( psDec->fs_kHz == 12 ) { + SKP_Silk_range_decoder( &psDec->lagIndex[ FramesInPacket ], psRC, SKP_Silk_pitch_lag_MB_CDF, SKP_Silk_pitch_lag_MB_CDF_offset ); + } else if( psDec->fs_kHz == 16 ) { + SKP_Silk_range_decoder( &psDec->lagIndex[ FramesInPacket ], psRC, SKP_Silk_pitch_lag_WB_CDF, SKP_Silk_pitch_lag_WB_CDF_offset ); + } else { + SKP_Silk_range_decoder( &psDec->lagIndex[ FramesInPacket ], psRC, SKP_Silk_pitch_lag_SWB_CDF, SKP_Silk_pitch_lag_SWB_CDF_offset ); + } + } + prev_lagIndex = psDec->lagIndex[ FramesInPacket ]; + + /* Get countour index */ + if( psDec->fs_kHz == 8 ) { + /* Less codevectors used in 8 khz mode */ + SKP_Silk_range_decoder( &psDec->contourIndex[ FramesInPacket ], psRC, SKP_Silk_pitch_contour_NB_CDF, SKP_Silk_pitch_contour_NB_CDF_offset ); + } else { + /* Joint for 12, 16, and 24 khz */ + SKP_Silk_range_decoder( &psDec->contourIndex[ FramesInPacket ], psRC, SKP_Silk_pitch_contour_CDF, SKP_Silk_pitch_contour_CDF_offset ); + } + + /********************/ + /* Decode LTP gains */ + /********************/ + /* Decode PERIndex value */ + SKP_Silk_range_decoder( &psDec->PERIndex[ FramesInPacket ], psRC, SKP_Silk_LTP_per_index_CDF, SKP_Silk_LTP_per_index_CDF_offset ); + + for( k = 0; k < NB_SUBFR; k++ ) { + SKP_Silk_range_decoder( &psDec->LTPIndex[ FramesInPacket ][ k ], psRC, SKP_Silk_LTP_gain_CDF_ptrs[ psDec->PERIndex[ FramesInPacket ] ], + SKP_Silk_LTP_gain_CDF_offsets[ psDec->PERIndex[ FramesInPacket ] ] ); + } + + /**********************/ + /* Decode LTP scaling */ + + + + + + /**********************/ + SKP_Silk_range_decoder( &psDec->LTP_scaleIndex[ FramesInPacket ], psRC, SKP_Silk_LTPscale_CDF, SKP_Silk_LTPscale_offset ); + } + + /***************/ + /* Decode seed */ + /***************/ + SKP_Silk_range_decoder( &seed_int, psRC, SKP_Silk_Seed_CDF, SKP_Silk_Seed_offset ); + psDec->Seed[ FramesInPacket ] = (SKP_int32)seed_int; + /**************************************/ + /* Decode Frame termination indicator */ + /**************************************/ + SKP_Silk_range_decoder( &FrameTermination, psRC, SKP_Silk_FrameTermination_v4_CDF, SKP_Silk_FrameTermination_v4_offset ); + + psDec->sigtype[ FramesInPacket ] = sigtype; + psDec->QuantOffsetType[ FramesInPacket ] = QuantOffsetType; + + FramesInPacket++; + } + + /****************************************/ + /* get number of bytes used so far */ + /****************************************/ + SKP_Silk_range_coder_get_length( psRC, &nBytesUsed ); + psDec->nBytesLeft = psRC->bufferLength - nBytesUsed; + if( psDec->nBytesLeft < 0 ) { + psRC->error = RANGE_CODER_READ_BEYOND_BUFFER; + } + + psDec->nFramesInPacket = FramesInPacket; + psDec->FrameTermination = FrameTermination; +} + + diff --git a/libs/silk/src/SKP_Silk_decode_parameters.c b/libs/silk/src/SKP_Silk_decode_parameters.c new file mode 100644 index 0000000000..939e33b90f --- /dev/null +++ b/libs/silk/src/SKP_Silk_decode_parameters.c @@ -0,0 +1,274 @@ + + +/*********************************************************************** + +Copyright (c) 2006-2010, Skype Limited. All rights reserved. +Redistribution and use in source and binary forms, with or without +modification, (subject to the limitations in the disclaimer below) +are permitted provided that the following conditions are met: +- Redistributions of source code must retain the above copyright notice, +this list of conditions and the following disclaimer. +- Redistributions in binary form must reproduce the above copyright +notice, this list of conditions and the following disclaimer in the +documentation and/or other materials provided with the distribution. + + + + + +- Neither the name of Skype Limited, nor the names of specific +contributors, may be used to endorse or promote products derived from +this software without specific prior written permission. +NO EXPRESS OR IMPLIED LICENSES TO ANY PARTY'S PATENT RIGHTS ARE GRANTED +BY THIS LICENSE.THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND +CONTRIBUTORS ''AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, +BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND +FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE +COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, +INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT +NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF +USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON +ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT +(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE +OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + +***********************************************************************/ + +#include "SKP_Silk_main.h" + +/* Decode parameters from payload */ +void SKP_Silk_decode_parameters( + SKP_Silk_decoder_state *psDec, /* I/O State */ + SKP_Silk_decoder_control *psDecCtrl, /* I/O Decoder control */ + SKP_int q[], /* O Excitation signal */ + const SKP_int fullDecoding /* I Flag to tell if only arithmetic decoding */ +) +{ + SKP_int i, k, Ix, fs_kHz_dec, nBytesUsed; + SKP_int Ixs[ NB_SUBFR ]; + SKP_int GainsIndices[ NB_SUBFR ]; + SKP_int NLSFIndices[ NLSF_MSVQ_MAX_CB_STAGES ]; + SKP_int pNLSF_Q15[ MAX_LPC_ORDER ], pNLSF0_Q15[ MAX_LPC_ORDER ]; + const SKP_int16 *cbk_ptr_Q14; + const SKP_Silk_NLSF_CB_struct *psNLSF_CB = NULL; + SKP_Silk_range_coder_state *psRC = &psDec->sRC; + + /************************/ + /* Decode sampling rate */ + /************************/ + /* only done for first frame of packet */ + if( psDec->nFramesDecoded == 0 ) { + SKP_Silk_range_decoder( &Ix, psRC, SKP_Silk_SamplingRates_CDF, SKP_Silk_SamplingRates_offset ); + + /* check that sampling rate is supported */ + if( Ix < 0 || Ix > 3 ) { + psRC->error = RANGE_CODER_ILLEGAL_SAMPLING_RATE; + return; + + + + + + } + fs_kHz_dec = SKP_Silk_SamplingRates_table[ Ix ]; + SKP_Silk_decoder_set_fs( psDec, fs_kHz_dec ); + } + + /*******************************************/ + /* Decode signal type and quantizer offset */ + /*******************************************/ + if( psDec->nFramesDecoded == 0 ) { + /* first frame in packet: independent coding */ + SKP_Silk_range_decoder( &Ix, psRC, SKP_Silk_type_offset_CDF, SKP_Silk_type_offset_CDF_offset ); + } else { + /* condidtional coding */ + SKP_Silk_range_decoder( &Ix, psRC, SKP_Silk_type_offset_joint_CDF[ psDec->typeOffsetPrev ], + SKP_Silk_type_offset_CDF_offset ); + } + psDecCtrl->sigtype = SKP_RSHIFT( Ix, 1 ); + psDecCtrl->QuantOffsetType = Ix & 1; + psDec->typeOffsetPrev = Ix; + + /****************/ + /* Decode gains */ + /****************/ + /* first subframe */ + if( psDec->nFramesDecoded == 0 ) { + /* first frame in packet: independent coding */ + SKP_Silk_range_decoder( &GainsIndices[ 0 ], psRC, SKP_Silk_gain_CDF[ psDecCtrl->sigtype ], SKP_Silk_gain_CDF_offset ); + } else { + /* condidtional coding */ + SKP_Silk_range_decoder( &GainsIndices[ 0 ], psRC, SKP_Silk_delta_gain_CDF, SKP_Silk_delta_gain_CDF_offset ); + } + + /* remaining subframes */ + for( i = 1; i < NB_SUBFR; i++ ) { + SKP_Silk_range_decoder( &GainsIndices[ i ], psRC, SKP_Silk_delta_gain_CDF, SKP_Silk_delta_gain_CDF_offset ); + } + + /* Dequant Gains */ + SKP_Silk_gains_dequant( psDecCtrl->Gains_Q16, GainsIndices, &psDec->LastGainIndex, psDec->nFramesDecoded ); + /***************/ + /* Decode LSFs */ + /***************/ + /* Set pointer to LSF VQ CB for the current signal type */ + psNLSF_CB = psDec->psNLSF_CB[ psDecCtrl->sigtype ]; + + /* Arithmetically decode NLSF path */ + SKP_Silk_range_decoder_multi( NLSFIndices, psRC, psNLSF_CB->StartPtr, psNLSF_CB->MiddleIx, psNLSF_CB->nStages ); + + + + + + + /* From the NLSF path, decode an NLSF vector */ + SKP_Silk_NLSF_MSVQ_decode( pNLSF_Q15, psNLSF_CB, NLSFIndices, psDec->LPC_order ); + + /************************************/ + /* Decode NLSF interpolation factor */ + /************************************/ + SKP_Silk_range_decoder( &psDecCtrl->NLSFInterpCoef_Q2, psRC, SKP_Silk_NLSF_interpolation_factor_CDF, + SKP_Silk_NLSF_interpolation_factor_offset ); + + /* If just reset, e.g., because internal Fs changed, do not allow interpolation */ + /* improves the case of packet loss in the first frame after a switch */ + if( psDec->first_frame_after_reset == 1 ) { + psDecCtrl->NLSFInterpCoef_Q2 = 4; + } + + if( fullDecoding ) { + /* Convert NLSF parameters to AR prediction filter coefficients */ + SKP_Silk_NLSF2A_stable( psDecCtrl->PredCoef_Q12[ 1 ], pNLSF_Q15, psDec->LPC_order ); + + if( psDecCtrl->NLSFInterpCoef_Q2 < 4 ) { + /* Calculation of the interpolated NLSF0 vector from the interpolation factor, */ + /* the previous NLSF1, and the current NLSF1 */ + for( i = 0; i < psDec->LPC_order; i++ ) { + pNLSF0_Q15[ i ] = psDec->prevNLSF_Q15[ i ] + SKP_RSHIFT( SKP_MUL( psDecCtrl->NLSFInterpCoef_Q2, + ( pNLSF_Q15[ i ] - psDec->prevNLSF_Q15[ i ] ) ), 2 ); + } + + /* Convert NLSF parameters to AR prediction filter coefficients */ + SKP_Silk_NLSF2A_stable( psDecCtrl->PredCoef_Q12[ 0 ], pNLSF0_Q15, psDec->LPC_order ); + } else { + /* Copy LPC coefficients for first half from second half */ + SKP_memcpy( psDecCtrl->PredCoef_Q12[ 0 ], psDecCtrl->PredCoef_Q12[ 1 ], + psDec->LPC_order * sizeof( SKP_int16 ) ); + } + } + + SKP_memcpy( psDec->prevNLSF_Q15, pNLSF_Q15, psDec->LPC_order * sizeof( SKP_int ) ); + + /* After a packet loss do BWE of LPC coefs */ + if( psDec->lossCnt ) { + SKP_Silk_bwexpander( psDecCtrl->PredCoef_Q12[ 0 ], psDec->LPC_order, BWE_AFTER_LOSS_Q16 ); + SKP_Silk_bwexpander( psDecCtrl->PredCoef_Q12[ 1 ], psDec->LPC_order, BWE_AFTER_LOSS_Q16 ); + } + + if( psDecCtrl->sigtype == SIG_TYPE_VOICED ) { + /*********************/ + /* Decode pitch lags */ + /*********************/ + + + + + + /* Get lag index */ + if( psDec->fs_kHz == 8 ) { + SKP_Silk_range_decoder( &Ixs[ 0 ], psRC, SKP_Silk_pitch_lag_NB_CDF, SKP_Silk_pitch_lag_NB_CDF_offset ); + } else if( psDec->fs_kHz == 12 ) { + SKP_Silk_range_decoder( &Ixs[ 0 ], psRC, SKP_Silk_pitch_lag_MB_CDF, SKP_Silk_pitch_lag_MB_CDF_offset ); + } else if( psDec->fs_kHz == 16 ) { + SKP_Silk_range_decoder( &Ixs[ 0 ], psRC, SKP_Silk_pitch_lag_WB_CDF, SKP_Silk_pitch_lag_WB_CDF_offset ); + } else { + SKP_Silk_range_decoder( &Ixs[ 0 ], psRC, SKP_Silk_pitch_lag_SWB_CDF, SKP_Silk_pitch_lag_SWB_CDF_offset ); + } + + /* Get countour index */ + if( psDec->fs_kHz == 8 ) { + /* Less codevectors used in 8 khz mode */ + SKP_Silk_range_decoder( &Ixs[ 1 ], psRC, SKP_Silk_pitch_contour_NB_CDF, SKP_Silk_pitch_contour_NB_CDF_offset ); + } else { + /* Joint for 12, 16, and 24 khz */ + SKP_Silk_range_decoder( &Ixs[ 1 ], psRC, SKP_Silk_pitch_contour_CDF, SKP_Silk_pitch_contour_CDF_offset ); + } + + /* Decode pitch values */ + SKP_Silk_decode_pitch( Ixs[ 0 ], Ixs[ 1 ], psDecCtrl->pitchL, psDec->fs_kHz ); + + /********************/ + /* Decode LTP gains */ + /********************/ + /* Decode PERIndex value */ + SKP_Silk_range_decoder( &psDecCtrl->PERIndex, psRC, SKP_Silk_LTP_per_index_CDF, + SKP_Silk_LTP_per_index_CDF_offset ); + + /* Decode Codebook Index */ + cbk_ptr_Q14 = SKP_Silk_LTP_vq_ptrs_Q14[ psDecCtrl->PERIndex ]; // set pointer to start of codebook + + for( k = 0; k < NB_SUBFR; k++ ) { + SKP_Silk_range_decoder( &Ix, psRC, SKP_Silk_LTP_gain_CDF_ptrs[ psDecCtrl->PERIndex ], + SKP_Silk_LTP_gain_CDF_offsets[ psDecCtrl->PERIndex ] ); + + for( i = 0; i < LTP_ORDER; i++ ) { + psDecCtrl->LTPCoef_Q14[ SKP_SMULBB( k, LTP_ORDER ) + i ] = cbk_ptr_Q14[ SKP_SMULBB( Ix, LTP_ORDER ) + i ]; + } + } + + /**********************/ + /* Decode LTP scaling */ + /**********************/ + SKP_Silk_range_decoder( &Ix, psRC, SKP_Silk_LTPscale_CDF, SKP_Silk_LTPscale_offset ); + psDecCtrl->LTP_scale_Q14 = SKP_Silk_LTPScales_table_Q14[ Ix ]; + } else { + + + + + + SKP_memset( psDecCtrl->pitchL, 0, NB_SUBFR * sizeof( SKP_int ) ); + SKP_memset( psDecCtrl->LTPCoef_Q14, 0, NB_SUBFR * LTP_ORDER * sizeof( SKP_int16 ) ); + psDecCtrl->PERIndex = 0; + psDecCtrl->LTP_scale_Q14 = 0; + } + + /***************/ + /* Decode seed */ + /***************/ + SKP_Silk_range_decoder( &Ix, psRC, SKP_Silk_Seed_CDF, SKP_Silk_Seed_offset ); + psDecCtrl->Seed = (SKP_int32)Ix; + /*********************************************/ + /* Decode quantization indices of excitation */ + /*********************************************/ + SKP_Silk_decode_pulses( psRC, psDecCtrl, q, psDec->frame_length ); + + /*********************************************/ + /* Decode VAD flag */ + /*********************************************/ + SKP_Silk_range_decoder( &psDec->vadFlag, psRC, SKP_Silk_vadflag_CDF, SKP_Silk_vadflag_offset ); + + /**************************************/ + /* Decode Frame termination indicator */ + /**************************************/ + SKP_Silk_range_decoder( &psDec->FrameTermination, psRC, SKP_Silk_FrameTermination_CDF, SKP_Silk_FrameTermination_offset ); + + /****************************************/ + /* get number of bytes used so far */ + /****************************************/ + SKP_Silk_range_coder_get_length( psRC, &nBytesUsed ); + psDec->nBytesLeft = psRC->bufferLength - nBytesUsed; + if( psDec->nBytesLeft < 0 ) { + psRC->error = RANGE_CODER_READ_BEYOND_BUFFER; + } + + /****************************************/ + /* check remaining bits in last byte */ + /****************************************/ + if( psDec->nBytesLeft == 0 ) { + SKP_Silk_range_coder_check_after_decoding( psRC ); + } +} + + diff --git a/libs/silk/src/SKP_Silk_decode_parameters_v4.c b/libs/silk/src/SKP_Silk_decode_parameters_v4.c new file mode 100644 index 0000000000..a3232fa433 --- /dev/null +++ b/libs/silk/src/SKP_Silk_decode_parameters_v4.c @@ -0,0 +1,181 @@ + + +/*********************************************************************** + + + + + +Copyright (c) 2006-2010, Skype Limited. All rights reserved. +Redistribution and use in source and binary forms, with or without +modification, (subject to the limitations in the disclaimer below) +are permitted provided that the following conditions are met: +- Redistributions of source code must retain the above copyright notice, +this list of conditions and the following disclaimer. +- Redistributions in binary form must reproduce the above copyright +notice, this list of conditions and the following disclaimer in the +documentation and/or other materials provided with the distribution. +- Neither the name of Skype Limited, nor the names of specific +contributors, may be used to endorse or promote products derived from +this software without specific prior written permission. +NO EXPRESS OR IMPLIED LICENSES TO ANY PARTY'S PATENT RIGHTS ARE GRANTED +BY THIS LICENSE.THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND +CONTRIBUTORS ''AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, +BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND +FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE +COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, +INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT +NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF +USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON +ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT +(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE +OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + +***********************************************************************/ + +#include "SKP_Silk_main.h" + +/* Decode parameters from payload */ +void SKP_Silk_decode_parameters_v4( + SKP_Silk_decoder_state *psDec, /* I/O State */ + SKP_Silk_decoder_control *psDecCtrl, /* I/O Decoder control */ + SKP_int q[ MAX_FRAME_LENGTH ], /* O Excitation signal */ + const SKP_int fullDecoding /* I Flag to tell if only arithmetic decoding */ +) +{ + SKP_int i, k, Ix, nBytesUsed; + SKP_int pNLSF_Q15[ MAX_LPC_ORDER ], pNLSF0_Q15[ MAX_LPC_ORDER ]; + const SKP_int16 *cbk_ptr_Q14; + const SKP_Silk_NLSF_CB_struct *psNLSF_CB = NULL; + SKP_Silk_range_coder_state *psRC = &psDec->sRC; + + psDec->FrameTermination = SKP_SILK_MORE_FRAMES; + psDecCtrl->sigtype = psDec->sigtype[ psDec->nFramesDecoded ]; + psDecCtrl->QuantOffsetType = psDec->QuantOffsetType[ psDec->nFramesDecoded ]; + psDec->vadFlag = psDec->vadFlagBuf[ psDec->nFramesDecoded ]; + psDecCtrl->NLSFInterpCoef_Q2 = psDec->NLSFInterpCoef_Q2[ psDec->nFramesDecoded ]; + + + + + + psDecCtrl->Seed = psDec->Seed[ psDec->nFramesDecoded ]; + + /* Dequant Gains */ + SKP_Silk_gains_dequant( psDecCtrl->Gains_Q16, psDec->GainsIndices[ psDec->nFramesDecoded ], &psDec->LastGainIndex, psDec->nFramesDecoded ); + /***************/ + /* Decode LSFs */ + /***************/ + + /* Set pointer to LSF VQ CB for the current signal type */ + psNLSF_CB = psDec->psNLSF_CB[ psDecCtrl->sigtype ]; + + /* From the LSF path, decode an LSF vector */ + SKP_Silk_NLSF_MSVQ_decode( pNLSF_Q15, psNLSF_CB, psDec->NLSFIndices[ psDec->nFramesDecoded ], psDec->LPC_order ); + + /* Convert LSF parameters to AR prediction filter coefficients */ + SKP_Silk_NLSF2A_stable( psDecCtrl->PredCoef_Q12[ 1 ], pNLSF_Q15, psDec->LPC_order ); + + /* If just reset, e.g., because internal Fs changed, do not allow interpolation */ + /* improves the case of packet loss in the first frame after a switch */ + if( psDec->first_frame_after_reset == 1 ) { + psDecCtrl->NLSFInterpCoef_Q2 = 4; + } + + if( psDecCtrl->NLSFInterpCoef_Q2 < 4 ) { + /* Calculation of the interpolated LSF0 vector from the interpolation factor, */ + /* the previous LSF1, and the current LSF1 */ + for( i = 0; i < psDec->LPC_order; i++ ) { + pNLSF0_Q15[ i ] = psDec->prevNLSF_Q15[ i ] + SKP_RSHIFT( SKP_MUL( psDecCtrl->NLSFInterpCoef_Q2, + ( pNLSF_Q15[ i ] - psDec->prevNLSF_Q15[ i ] ) ), 2 ); + } + + /* Convert LSF parameters to AR prediction filter coefficients */ + SKP_Silk_NLSF2A_stable( psDecCtrl->PredCoef_Q12[ 0 ], pNLSF0_Q15, psDec->LPC_order ); + } else { + /* Copy LPC coefficients for first half from second half */ + SKP_memcpy( psDecCtrl->PredCoef_Q12[ 0 ], psDecCtrl->PredCoef_Q12[ 1 ], + psDec->LPC_order * sizeof( SKP_int16 ) ); + } + + SKP_memcpy( psDec->prevNLSF_Q15, pNLSF_Q15, psDec->LPC_order * sizeof( SKP_int ) ); + + /* After a packet loss do BWE of LPC coefs */ + if( psDec->lossCnt ) { + SKP_Silk_bwexpander( psDecCtrl->PredCoef_Q12[ 0 ], psDec->LPC_order, BWE_AFTER_LOSS_Q16 ); + SKP_Silk_bwexpander( psDecCtrl->PredCoef_Q12[ 1 ], psDec->LPC_order, BWE_AFTER_LOSS_Q16 ); + } + + if( psDecCtrl->sigtype == SIG_TYPE_VOICED ) { + + + + + + /*********************/ + /* Decode pitch lags */ + /*********************/ + + /* Decode pitch values */ + SKP_Silk_decode_pitch( psDec->lagIndex[ psDec->nFramesDecoded ], + psDec->contourIndex[ psDec->nFramesDecoded ], psDecCtrl->pitchL, psDec->fs_kHz ); + + /********************/ + /* Decode LTP gains */ + /********************/ + psDecCtrl->PERIndex = psDec->PERIndex[ psDec->nFramesDecoded ]; + + /* Decode Codebook Index */ + cbk_ptr_Q14 = SKP_Silk_LTP_vq_ptrs_Q14[ psDecCtrl->PERIndex ]; /* set pointer to start of codebook */ + + for( k = 0; k < NB_SUBFR; k++ ) { + Ix = psDec->LTPIndex[ psDec->nFramesDecoded ][ k ]; + for( i = 0; i < LTP_ORDER; i++ ) { + psDecCtrl->LTPCoef_Q14[ SKP_SMULBB( k, LTP_ORDER ) + i ] = cbk_ptr_Q14[ SKP_SMULBB( Ix, LTP_ORDER ) + i ]; + } + } + + /**********************/ + /* Decode LTP scaling */ + /**********************/ + Ix = psDec->LTP_scaleIndex[ psDec->nFramesDecoded ]; + psDecCtrl->LTP_scale_Q14 = SKP_Silk_LTPScales_table_Q14[ Ix ]; + } else { + SKP_memset( psDecCtrl->pitchL, 0, NB_SUBFR * sizeof( SKP_int ) ); + SKP_memset( psDecCtrl->LTPCoef_Q14, 0, NB_SUBFR * LTP_ORDER * sizeof( SKP_int16 ) ); + psDecCtrl->PERIndex = 0; + psDecCtrl->LTP_scale_Q14 = 0; + } + + /*********************************************/ + /* Decode quantization indices of excitation */ + /*********************************************/ + SKP_Silk_decode_pulses( psRC, psDecCtrl, q, psDec->frame_length ); + + /****************************************/ + /* get number of bytes used so far */ + /****************************************/ + SKP_Silk_range_coder_get_length( psRC, &nBytesUsed ); + psDec->nBytesLeft = psRC->bufferLength - nBytesUsed; + if( psDec->nBytesLeft < 0 ) { + psRC->error = RANGE_CODER_READ_BEYOND_BUFFER; + } + + + + + + /****************************************/ + /* check remaining bits in last byte */ + /****************************************/ + if( psDec->nBytesLeft == 0 ) { + SKP_Silk_range_coder_check_after_decoding( psRC ); + } + + if( psDec->nFramesInPacket == (psDec->nFramesDecoded + 1)) { + /* To indicate the packet has been fully decoded */ + psDec->FrameTermination = SKP_SILK_LAST_FRAME; + } +} + + diff --git a/libs/silk/src/SKP_Silk_decode_pulses.c b/libs/silk/src/SKP_Silk_decode_pulses.c new file mode 100644 index 0000000000..7a36a0a54b --- /dev/null +++ b/libs/silk/src/SKP_Silk_decode_pulses.c @@ -0,0 +1,121 @@ + + +/*********************************************************************** + +Copyright (c) 2006-2010, Skype Limited. All rights reserved. +Redistribution and use in source and binary forms, with or without +modification, (subject to the limitations in the disclaimer below) +are permitted provided that the following conditions are met: +- Redistributions of source code must retain the above copyright notice, +this list of conditions and the following disclaimer. +- Redistributions in binary form must reproduce the above copyright +notice, this list of conditions and the following disclaimer in the +documentation and/or other materials provided with the distribution. +- Neither the name of Skype Limited, nor the names of specific +contributors, may be used to endorse or promote products derived from +this software without specific prior written permission. +NO EXPRESS OR IMPLIED LICENSES TO ANY PARTY'S PATENT RIGHTS ARE GRANTED +BY THIS LICENSE.THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND +CONTRIBUTORS ''AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, +BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND +FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE +COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, +INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT +NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF +USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON +ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT +(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE +OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + +***********************************************************************/ + +#include "SKP_Silk_main.h" + + + + + + +/*********************************************/ +/* Decode quantization indices of excitation */ +/*********************************************/ +void SKP_Silk_decode_pulses( + SKP_Silk_range_coder_state *psRC, /* I/O Range coder state */ + SKP_Silk_decoder_control *psDecCtrl, /* I/O Decoder control */ + SKP_int q[], /* O Excitation signal */ + const SKP_int frame_length /* I Frame length (preliminary) */ +) +{ + SKP_int i, j, k, iter, abs_q, nLS, bit; + SKP_int sum_pulses[ MAX_NB_SHELL_BLOCKS ], nLshifts[ MAX_NB_SHELL_BLOCKS ]; + SKP_int *pulses_ptr; + const SKP_uint16 *cdf_ptr; + + /*********************/ + /* Decode rate level */ + /*********************/ + SKP_Silk_range_decoder( &psDecCtrl->RateLevelIndex, psRC, + SKP_Silk_rate_levels_CDF[ psDecCtrl->sigtype ], SKP_Silk_rate_levels_CDF_offset ); + + /* Calculate number of shell blocks */ + iter = frame_length / SHELL_CODEC_FRAME_LENGTH; + + /***************************************************/ + /* Sum-Weighted-Pulses Decoding */ + /***************************************************/ + cdf_ptr = SKP_Silk_pulses_per_block_CDF[ psDecCtrl->RateLevelIndex ]; + for( i = 0; i < iter; i++ ) { + nLshifts[ i ] = 0; + SKP_Silk_range_decoder( &sum_pulses[ i ], psRC, cdf_ptr, SKP_Silk_pulses_per_block_CDF_offset ); + + /* LSB indication */ + while( sum_pulses[ i ] == ( MAX_PULSES + 1 ) ) { + nLshifts[ i ]++; + SKP_Silk_range_decoder( &sum_pulses[ i ], psRC, + SKP_Silk_pulses_per_block_CDF[ N_RATE_LEVELS - 1 ], SKP_Silk_pulses_per_block_CDF_offset ); + } + } + + /***************************************************/ + /* Shell decoding */ + /***************************************************/ + for( i = 0; i < iter; i++ ) { + if( sum_pulses[ i ] > 0 ) { + SKP_Silk_shell_decoder( &q[ SKP_SMULBB( i, SHELL_CODEC_FRAME_LENGTH ) ], psRC, sum_pulses[ i ] ); + } else { + SKP_memset( &q[ SKP_SMULBB( i, SHELL_CODEC_FRAME_LENGTH ) ], 0, SHELL_CODEC_FRAME_LENGTH * sizeof( SKP_int ) ); + + + + + + } + } + + /***************************************************/ + /* LSB Decoding */ + /***************************************************/ + for( i = 0; i < iter; i++ ) { + if( nLshifts[ i ] > 0 ) { + nLS = nLshifts[ i ]; + pulses_ptr = &q[ SKP_SMULBB( i, SHELL_CODEC_FRAME_LENGTH ) ]; + for( k = 0; k < SHELL_CODEC_FRAME_LENGTH; k++ ) { + abs_q = pulses_ptr[ k ]; + for( j = 0; j < nLS; j++ ) { + abs_q = SKP_LSHIFT( abs_q, 1 ); + SKP_Silk_range_decoder( &bit, psRC, SKP_Silk_lsb_CDF, 1 ); + abs_q += bit; + } + pulses_ptr[ k ] = abs_q; + } + } + } + + /****************************************/ + /* Decode and add signs to pulse signal */ + /****************************************/ + SKP_Silk_decode_signs( psRC, q, frame_length, psDecCtrl->sigtype, + psDecCtrl->QuantOffsetType, psDecCtrl->RateLevelIndex); +} + + diff --git a/libs/silk/src/SKP_Silk_decoder_set_fs.c b/libs/silk/src/SKP_Silk_decoder_set_fs.c new file mode 100644 index 0000000000..432c12c8c6 --- /dev/null +++ b/libs/silk/src/SKP_Silk_decoder_set_fs.c @@ -0,0 +1,97 @@ + + +/*********************************************************************** + +Copyright (c) 2006-2010, Skype Limited. All rights reserved. +Redistribution and use in source and binary forms, with or without +modification, (subject to the limitations in the disclaimer below) +are permitted provided that the following conditions are met: +- Redistributions of source code must retain the above copyright notice, +this list of conditions and the following disclaimer. +- Redistributions in binary form must reproduce the above copyright +notice, this list of conditions and the following disclaimer in the +documentation and/or other materials provided with the distribution. +- Neither the name of Skype Limited, nor the names of specific +contributors, may be used to endorse or promote products derived from +this software without specific prior written permission. +NO EXPRESS OR IMPLIED LICENSES TO ANY PARTY'S PATENT RIGHTS ARE GRANTED + + + + + +BY THIS LICENSE.THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND +CONTRIBUTORS ''AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, +BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND +FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE +COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, +INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT +NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF +USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON +ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT +(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE +OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + +***********************************************************************/ + +#include "SKP_Silk_main.h" + +/* Set decoder sampling rate */ +void SKP_Silk_decoder_set_fs( + SKP_Silk_decoder_state *psDec, /* I/O Decoder state pointer */ + SKP_int fs_kHz /* I Sampling frequency (kHz) */ +) +{ + if( psDec->fs_kHz != fs_kHz ) { + psDec->fs_kHz = fs_kHz; + psDec->frame_length = SKP_SMULBB( FRAME_LENGTH_MS, fs_kHz ); + psDec->subfr_length = SKP_SMULBB( FRAME_LENGTH_MS / NB_SUBFR, fs_kHz ); + if( psDec->fs_kHz == 8 ) { + psDec->LPC_order = MIN_LPC_ORDER; + psDec->psNLSF_CB[ 0 ] = &SKP_Silk_NLSF_CB0_10; + psDec->psNLSF_CB[ 1 ] = &SKP_Silk_NLSF_CB1_10; + } else { + psDec->LPC_order = MAX_LPC_ORDER; + psDec->psNLSF_CB[ 0 ] = &SKP_Silk_NLSF_CB0_16; + psDec->psNLSF_CB[ 1 ] = &SKP_Silk_NLSF_CB1_16; + } + /* Reset part of the decoder state */ + SKP_memset( psDec->sLPC_Q14, 0, MAX_LPC_ORDER * sizeof( SKP_int32 ) ); + SKP_memset( psDec->outBuf, 0, MAX_FRAME_LENGTH * sizeof( SKP_int16 ) ); + SKP_memset( psDec->prevNLSF_Q15, 0, MAX_LPC_ORDER * sizeof( SKP_int ) ); + + psDec->sLTP_buf_idx = 0; + psDec->lagPrev = 100; + psDec->LastGainIndex = 1; + psDec->prev_sigtype = 0; + psDec->first_frame_after_reset = 1; + + if( fs_kHz == 24 ) { + psDec->HP_A = SKP_Silk_Dec_A_HP_24; + + + + + + psDec->HP_B = SKP_Silk_Dec_B_HP_24; + } else if( fs_kHz == 16 ) { + psDec->HP_A = SKP_Silk_Dec_A_HP_16; + psDec->HP_B = SKP_Silk_Dec_B_HP_16; + } else if( fs_kHz == 12 ) { + psDec->HP_A = SKP_Silk_Dec_A_HP_12; + psDec->HP_B = SKP_Silk_Dec_B_HP_12; + } else if( fs_kHz == 8 ) { + psDec->HP_A = SKP_Silk_Dec_A_HP_8; + psDec->HP_B = SKP_Silk_Dec_B_HP_8; + } else { + /* unsupported sampling rate */ + SKP_assert( 0 ); + } + } + + /* Check that settings are valid */ + SKP_assert( psDec->frame_length > 0 && psDec->frame_length <= MAX_FRAME_LENGTH ); +} + + + diff --git a/libs/silk/src/SKP_Silk_define.h b/libs/silk/src/SKP_Silk_define.h new file mode 100644 index 0000000000..223be86fcc --- /dev/null +++ b/libs/silk/src/SKP_Silk_define.h @@ -0,0 +1,371 @@ + + +/*********************************************************************** + +Copyright (c) 2006-2010, Skype Limited. All rights reserved. +Redistribution and use in source and binary forms, with or without +modification, (subject to the limitations in the disclaimer below) +are permitted provided that the following conditions are met: +- Redistributions of source code must retain the above copyright notice, +this list of conditions and the following disclaimer. +- Redistributions in binary form must reproduce the above copyright +notice, this list of conditions and the following disclaimer in the +documentation and/or other materials provided with the distribution. +- Neither the name of Skype Limited, nor the names of specific +contributors, may be used to endorse or promote products derived from +this software without specific prior written permission. +NO EXPRESS OR IMPLIED LICENSES TO ANY PARTY'S PATENT RIGHTS ARE GRANTED +BY THIS LICENSE.THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND +CONTRIBUTORS ''AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, +BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND +FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE +COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, +INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT +NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF +USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON + + + + + +ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT +(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE +OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + +***********************************************************************/ + +#ifndef SKP_SILK_DEFINE_H +#define SKP_SILK_DEFINE_H + +#include "SKP_Silk_errors.h" +#include "SKP_Silk_typedef.h" + +#ifdef __cplusplus +extern "C" +{ +#endif + + +#define MAX_FRAMES_PER_PACKET 5 +#define BIT_STREAM_V3 3 +#define BIT_STREAM_V4 4 +#define USE_BIT_STREAM_V BIT_STREAM_V3 // Should be moved to a API call + + +/* MAX DELTA LAG used for multiframe packets */ +#define MAX_DELTA_LAG 10 + +/* Lower limit on bitrate for each mode */ +#define MIN_TARGET_RATE_NB_BPS 5000 +#define MIN_TARGET_RATE_MB_BPS 7000 +#define MIN_TARGET_RATE_WB_BPS 8000 +#define MIN_TARGET_RATE_SWB_BPS 20000 + +/* Transition bitrates between modes */ +#define SWB2WB_BITRATE_BPS 30000 +#define SWB2WB_BITRATE_BPS_INITIAL 25000 +#define WB2SWB_BITRATE_BPS 35000 +#define WB2MB_BITRATE_BPS 15000 +#define MB2WB_BITRATE_BPS 20000 +#define MB2NB_BITRATE_BPS 10000 +#define NB2MB_BITRATE_BPS 14000 + +/* Integration/hysteresis threshold for lowering internal sample frequency */ +/* 30000000 -> 6 sec if bitrate is 5000 bps below limit; 3 sec if bitrate is 10000 bps below limit */ +#define ACCUM_BITS_DIFF_THRESHOLD 30000000 +#define TARGET_RATE_TAB_SZ 8 + +/* DTX settings */ + + + + + +#define NO_SPEECH_FRAMES_BEFORE_DTX 5 /* eq 100 ms */ +#define MAX_CONSECUTIVE_DTX 20 /* eq 400 ms */ + +#define USE_LBRR 1 + +/* Amount of concecutive no FEC packets before telling JB */ +#define NO_LBRR_THRES 10 + +/* Maximum delay between real packet and LBRR packet */ +#define MAX_LBRR_DELAY 2 +#define LBRR_IDX_MASK 1 + +#define INBAND_FEC_MIN_RATE_BPS 18000 /* Dont use inband FEC below this total target rate */ +#define LBRR_LOSS_THRES 2 /* Start adding LBRR at this loss rate (needs tuning) */ + +/* LBRR usage defines */ +#define SKP_SILK_NO_LBRR 0 /* No LBRR information for this packet */ +#define SKP_SILK_ADD_LBRR_TO_PLUS1 1 /* Add LBRR for this packet to packet n + 1 */ +#define SKP_SILK_ADD_LBRR_TO_PLUS2 2 /* Add LBRR for this packet to packet n + 2 */ + +/* Frame termination indicator defines */ +#define SKP_SILK_LAST_FRAME 0 /* Last frames in packet */ +#define SKP_SILK_MORE_FRAMES 1 /* More frames to follow this one */ +#define SKP_SILK_LBRR_VER1 2 /* LBRR information from packet n - 1 */ +#define SKP_SILK_LBRR_VER2 3 /* LBRR information from packet n - 2 */ +#define SKP_SILK_EXT_LAYER 4 /* Extension layers added */ + +/* Number of Second order Sections for SWB detection HP filter */ +#define NB_SOS 3 +#define HP_8_KHZ_THRES 10 /* average energy per sample, above 8 kHz */ +#define CONCEC_SWB_SMPLS_THRES 480 * 15 /* 300 ms */ +#define WB_DETECT_ACTIVE_SPEECH_MS_THRES 15000 /* ms of active speech needed for WB detection */ + +/* Low complexity setting */ +#ifdef EMBEDDED_OPT +# define LOW_COMPLEXITY_ONLY 1 +#else +# define LOW_COMPLEXITY_ONLY 0 +#endif + +/* Activate bandwidth transition filtering for mode switching */ +#ifdef EMBEDDED_OPT +# define SWITCH_TRANSITION_FILTERING 0 +#else +#ifndef FORCE_FS_KHZ +# define SWITCH_TRANSITION_FILTERING 1 +#else +# define SWITCH_TRANSITION_FILTERING 0 + + + + + +#endif +#endif + +/* Decoder Parameters */ +#define DEC_HP_ORDER 2 + +/* Maximum sampling frequency, should be 16 for embedded */ +#define MAX_FS_KHZ 24 + +/* Signal Types used by silk */ +#define SIG_TYPE_VOICED 0 +#define SIG_TYPE_UNVOICED 1 + +/* VAD Types used by silk */ +#define NO_VOICE_ACTIVITY 0 +#define VOICE_ACTIVITY 1 + +/* number of samples per frame */ +#define FRAME_LENGTH_MS 20 /* 20 ms */ +#define MAX_FRAME_LENGTH (FRAME_LENGTH_MS * MAX_FS_KHZ) + +/* number of lookahead samples for pitch analysis */ +#define LA_PITCH_MS 3 +#define LA_PITCH_MAX (LA_PITCH_MS * MAX_FS_KHZ) + +/* number of lookahead samples for noise shape analysis */ +#define LA_SHAPE_MS 5 +#define LA_SHAPE_MAX (LA_SHAPE_MS * MAX_FS_KHZ) + +/* Order of LPC used in find pitch */ +#define FIND_PITCH_LPC_ORDER_MAX 16 + +/* Length of LPC window used in find pitch */ +#define FIND_PITCH_LPC_WIN_MS (30 + (LA_PITCH_MS << 1)) +#define FIND_PITCH_LPC_WIN_MAX (FIND_PITCH_LPC_WIN_MS * MAX_FS_KHZ) + +#define PITCH_EST_COMPLEXITY_HC_MODE SigProc_PITCH_EST_MAX_COMPLEX +#define PITCH_EST_COMPLEXITY_MC_MODE SigProc_PITCH_EST_MID_COMPLEX +#define PITCH_EST_COMPLEXITY_LC_MODE SigProc_PITCH_EST_MIN_COMPLEX + + +/* Max number of bytes in payload output buffer (may contain multiple frames) */ +#define MAX_ARITHM_BYTES 1024 + +#define RANGE_CODER_WRITE_BEYOND_BUFFER -1 +#define RANGE_CODER_CDF_OUT_OF_RANGE -2 +#define RANGE_CODER_NORMALIZATION_FAILED -3 +#define RANGE_CODER_ZERO_INTERVAL_WIDTH -4 + + + + + +#define RANGE_CODER_DECODER_CHECK_FAILED -5 +#define RANGE_CODER_READ_BEYOND_BUFFER -6 +#define RANGE_CODER_ILLEGAL_SAMPLING_RATE -7 +#define RANGE_CODER_DEC_PAYLOAD_TOO_LONG -8 + +/* dB level of lowest gain quantization level */ +#define MIN_QGAIN_DB 6 +/* dB level of highest gain quantization level */ +#define MAX_QGAIN_DB 86 +/* Number of gain quantization levels */ +#define N_LEVELS_QGAIN 64 +/* Max increase in gain quantization index */ +#define MAX_DELTA_GAIN_QUANT 40 +/* Max decrease in gain quantization index */ +#define MIN_DELTA_GAIN_QUANT -4 + +/* Quantization offsets (multiples of 4) */ +#define OFFSET_VL_Q10 32 +#define OFFSET_VH_Q10 100 +#define OFFSET_UVL_Q10 100 +#define OFFSET_UVH_Q10 256 + +/* Maximum numbers of iterations used to stabilize a LPC vector */ +#define MAX_LPC_STABILIZE_ITERATIONS 20 + +#define MAX_LPC_ORDER 16 +#define MIN_LPC_ORDER 10 + +/* Find Pred Coef defines */ +#define LTP_ORDER 5 + +/* LTP quantization settings */ +#define NB_LTP_CBKS 3 + +/* Number of subframes */ +#define NB_SUBFR 4 + +/* Flag to use harmonic noise shaping */ +#define USE_HARM_SHAPING 1 + +/* Max LPC order of noise shaping filters */ +#define SHAPE_LPC_ORDER_MAX 16 + +#define HARM_SHAPE_FIR_TAPS 3 + +/* Length of LPC window used in noise shape analysis */ +#define SHAPE_LPC_WIN_MS 15 +#define SHAPE_LPC_WIN_16_KHZ (SHAPE_LPC_WIN_MS * 16) + + + + + +#define SHAPE_LPC_WIN_24_KHZ (SHAPE_LPC_WIN_MS * 24) +#define SHAPE_LPC_WIN_MAX (SHAPE_LPC_WIN_MS * MAX_FS_KHZ) + +/* Maximum number of delayed decision states */ +#define DEL_DEC_STATES_MAX 4 + +#define LTP_BUF_LENGTH 512 +#define LTP_MASK (LTP_BUF_LENGTH - 1) + +#define DECISION_DELAY 32 +#define DECISION_DELAY_MASK (DECISION_DELAY - 1) + +/* number of subframes for excitation entropy coding */ +#define SHELL_CODEC_FRAME_LENGTH 16 +#define MAX_NB_SHELL_BLOCKS (MAX_FRAME_LENGTH / SHELL_CODEC_FRAME_LENGTH) + +/* number of rate levels, for entropy coding of excitation */ +#define N_RATE_LEVELS 10 + +/* maximum sum of pulses per shell coding frame */ +#define MAX_PULSES 18 + +#define MAX_MATRIX_SIZE MAX_LPC_ORDER /* Max of LPC Order and LTP order */ + +#if( MAX_LPC_ORDER > DECISION_DELAY ) +# define NSQ_LPC_BUF_LENGTH MAX_LPC_ORDER +#else +# define NSQ_LPC_BUF_LENGTH DECISION_DELAY +#endif + +/***********************/ +/* High pass filtering */ +/***********************/ +#define HIGH_PASS_INPUT 1 + +/***************************/ +/* Voice activity detector */ +/***************************/ +#define VAD_N_BANDS 4 /* 0-1, 1-2, 2-4, and 4-8 kHz */ + +#define VAD_INTERNAL_SUBFRAMES_LOG2 2 +#define VAD_INTERNAL_SUBFRAMES (1 << VAD_INTERNAL_SUBFRAMES_LOG2) + +#define VAD_NOISE_LEVEL_SMOOTH_COEF_Q16 1024 /* Must be < 4096 */ +#define VAD_NOISE_LEVELS_BIAS 50 + +/* Sigmoid settings */ +#define VAD_NEGATIVE_OFFSET_Q5 128 /* sigmoid is 0 at -128 */ + + + + + +#define VAD_SNR_FACTOR_Q16 45000 + +/* smoothing for SNR measurement */ +#define VAD_SNR_SMOOTH_COEF_Q18 4096 + +/******************/ +/* NLSF quantizer */ +/******************/ +#ifdef NLSF_TRAINING +# define NLSF_MSVQ_MAX_CB_STAGES 30 +# define NLSF_MSVQ_MAX_VECTORS_IN_STAGE 256 +# define NLSF_MSVQ_MAX_VECTORS_IN_STAGE_TWO_TO_END 128 +#else +# define NLSF_MSVQ_MAX_CB_STAGES 10 /* Update manually when changing codebooks */ +# define NLSF_MSVQ_MAX_VECTORS_IN_STAGE 128 /* Update manually when changing codebooks */ +# define NLSF_MSVQ_MAX_VECTORS_IN_STAGE_TWO_TO_END 16 /* Update manually when changing codebooks */ +#endif + +#define NLSF_MSVQ_FLUCTUATION_REDUCTION 1 +#define MAX_NLSF_MSVQ_SURVIVORS 16 +#define MAX_NLSF_MSVQ_SURVIVORS_LC_MODE 2 +#define MAX_NLSF_MSVQ_SURVIVORS_MC_MODE 4 + +/* Based on above defines, calculate how much memory is necessary to allocate */ +#if( NLSF_MSVQ_MAX_VECTORS_IN_STAGE > ( MAX_NLSF_MSVQ_SURVIVORS_LC_MODE * NLSF_MSVQ_MAX_VECTORS_IN_STAGE_TWO_TO_END ) ) +# define NLSF_MSVQ_TREE_SEARCH_MAX_VECTORS_EVALUATED_LC_MODE NLSF_MSVQ_MAX_VECTORS_IN_STAGE +#else +# define NLSF_MSVQ_TREE_SEARCH_MAX_VECTORS_EVALUATED_LC_MODE MAX_NLSF_MSVQ_SURVIVORS_LC_MODE * NLSF_MSVQ_MAX_VECTORS_IN_STAGE_TWO_TO_END +#endif + +#if( NLSF_MSVQ_MAX_VECTORS_IN_STAGE > ( MAX_NLSF_MSVQ_SURVIVORS * NLSF_MSVQ_MAX_VECTORS_IN_STAGE_TWO_TO_END ) ) +# define NLSF_MSVQ_TREE_SEARCH_MAX_VECTORS_EVALUATED NLSF_MSVQ_MAX_VECTORS_IN_STAGE +#else +# define NLSF_MSVQ_TREE_SEARCH_MAX_VECTORS_EVALUATED MAX_NLSF_MSVQ_SURVIVORS * NLSF_MSVQ_MAX_VECTORS_IN_STAGE_TWO_TO_END +#endif + +#define NLSF_MSVQ_SURV_MAX_REL_RD 4 + +/* Transition filtering for mode switching */ +#if SWITCH_TRANSITION_FILTERING +# define TRANSITION_TIME_UP_MS 5120 // 5120 = 64 * FRAME_LENGTH_MS * ( TRANSITION_INT_NUM - 1 ) = 64*(20*4) +# define TRANSITION_TIME_DOWN_MS 2560 // 2560 = 32 * FRAME_LENGTH_MS * ( TRANSITION_INT_NUM - 1 ) = 32*(20*4) +# define TRANSITION_NB 3 /* Hardcoded in tables */ +# define TRANSITION_NA 2 /* Hardcoded in tables */ +# define TRANSITION_INT_NUM 5 /* Hardcoded in tables */ +# define TRANSITION_FRAMES_UP ( TRANSITION_TIME_UP_MS / FRAME_LENGTH_MS ) +# define TRANSITION_FRAMES_DOWN ( TRANSITION_TIME_DOWN_MS / FRAME_LENGTH_MS ) +# define TRANSITION_INT_STEPS_UP ( TRANSITION_FRAMES_UP / ( TRANSITION_INT_NUM - 1 ) ) + + + + + +# define TRANSITION_INT_STEPS_DOWN ( TRANSITION_FRAMES_DOWN / ( TRANSITION_INT_NUM - 1 ) ) +#endif + +/* Row based */ +#define matrix_ptr(Matrix_base_adr, row, column, N) *(Matrix_base_adr + ((row)*(N)+(column))) +#define matrix_adr(Matrix_base_adr, row, column, N) (Matrix_base_adr + ((row)*(N)+(column))) + +/* Column based */ +#ifndef matrix_c_ptr +# define matrix_c_ptr(Matrix_base_adr, row, column, M) *(Matrix_base_adr + ((row)+(M)*(column))) +#endif +#define matrix_c_adr(Matrix_base_adr, row, column, M) (Matrix_base_adr + ((row)+(M)*(column))) + +/* BWE factors to apply after packet loss */ +#define BWE_AFTER_LOSS_Q16 63570 + +#ifdef __cplusplus +} +#endif + +#endif + + diff --git a/libs/silk/src/SKP_Silk_define_FIX.h b/libs/silk/src/SKP_Silk_define_FIX.h new file mode 100644 index 0000000000..c5ed4256db --- /dev/null +++ b/libs/silk/src/SKP_Silk_define_FIX.h @@ -0,0 +1,113 @@ + + +/*********************************************************************** + +Copyright (c) 2006-2010, Skype Limited. All rights reserved. +Redistribution and use in source and binary forms, with or without +modification, (subject to the limitations in the disclaimer below) +are permitted provided that the following conditions are met: +- Redistributions of source code must retain the above copyright notice, +this list of conditions and the following disclaimer. +- Redistributions in binary form must reproduce the above copyright +notice, this list of conditions and the following disclaimer in the +documentation and/or other materials provided with the distribution. +- Neither the name of Skype Limited, nor the names of specific +contributors, may be used to endorse or promote products derived from +this software without specific prior written permission. +NO EXPRESS OR IMPLIED LICENSES TO ANY PARTY'S PATENT RIGHTS ARE GRANTED +BY THIS LICENSE.THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND +CONTRIBUTORS ''AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, +BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND +FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE +COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, +INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT +NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF + + + + + +USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON +ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT +(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE +OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + +***********************************************************************/ + +#ifndef SKP_SILK_DEFINE_FIX_H +#define SKP_SILK_DEFINE_FIX_H + +#ifdef __cplusplus +extern "C" +{ +#endif + +/* Head room for correlations */ +#define LTP_CORRS_HEAD_ROOM 2 +#define LPC_CORRS_HEAD_ROOM 10 + +#define WB_DETECT_ACTIVE_SPEECH_LEVEL_THRES_Q8 179 // 179.2_Q8 = 0.7f required speech activity for counting frame as active + +/* DTX settings */ +#define SPEECH_ACTIVITY_DTX_THRES_Q8 26 // 25.60_Q8 = 0.1f + +#define LBRR_SPEECH_ACTIVITY_THRES_Q8 128 + +/* level of noise floor for whitening filter LPC analysis in pitch analysis */ +#define FIND_PITCH_WHITE_NOISE_FRACTION_Q16 66 + +/* bandwdith expansion for whitening filter in pitch analysis */ +#define FIND_PITCH_BANDWITH_EXPANSION_Q16 64881 + +/* Threshold used by pitch estimator for early escape */ +#define FIND_PITCH_CORRELATION_THRESHOLD_Q16_HC_MODE 45875 // 0.7 +#define FIND_PITCH_CORRELATION_THRESHOLD_Q16_MC_MODE 49152 // 0.75 +#define FIND_PITCH_CORRELATION_THRESHOLD_Q16_LC_MODE 52429 // 0.8 + +/* Regualarization factor for correlation matrix. Equivalent to adding noise at -50 dB */ +#define FIND_LTP_COND_FAC_Q31 21475 +#define FIND_LPC_COND_FAC_Q32 257698 // 6e-5 + +/* Find Pred Coef defines */ +#define INACTIVE_BWExp_Q16 64225 // 0.98 +#define ACTIVE_BWExp_Q16 65470 // 0.999 +#define LTP_DAMPING_Q16 66 +#define LTP_SMOOTHING_Q26 6710886 + +/* LTP quantization settings */ + + + + + +#define MU_LTP_QUANT_NB_Q8 8 +#define MU_LTP_QUANT_MB_Q8 6 +#define MU_LTP_QUANT_WB_Q8 5 +#define MU_LTP_QUANT_SWB_Q8 4 + +/***********************/ +/* High pass filtering */ +/***********************/ +/* Smoothing parameters for low end of pitch frequency range estimation */ +#define VARIABLE_HP_SMTH_COEF1_Q16 6554 // 0.1 +#define VARIABLE_HP_SMTH_COEF2_Q16 983 // 0.015 + +/* Min and max values for low end of pitch frequency range estimation */ +#define VARIABLE_HP_MIN_FREQ_Q0 80 +#define VARIABLE_HP_MAX_FREQ_Q0 150 + +/* Max absolute difference between log2 of pitch frequency and smoother state, to enter the smoother */ +#define VARIABLE_HP_MAX_DELTA_FREQ_Q7 51 // 0.4 in Q7 + +/* Defines for CN generation */ +#define CNG_BUF_MASK_MAX 255 /* 2^floor(log2(MAX_FRAME_LENGTH)) */ +#define CNG_GAIN_SMTH_Q16 4634 /* 0.25^(1/4) */ +#define CNG_NLSF_SMTH_Q16 16348 /* 0.25 */ + +#ifdef __cplusplus +} +#endif + +#endif + + diff --git a/libs/silk/src/SKP_Silk_detect_SWB_input.c b/libs/silk/src/SKP_Silk_detect_SWB_input.c new file mode 100644 index 0000000000..ae3419588e --- /dev/null +++ b/libs/silk/src/SKP_Silk_detect_SWB_input.c @@ -0,0 +1,92 @@ + + +/*********************************************************************** + +Copyright (c) 2006-2010, Skype Limited. All rights reserved. +Redistribution and use in source and binary forms, with or without +modification, (subject to the limitations in the disclaimer below) +are permitted provided that the following conditions are met: +- Redistributions of source code must retain the above copyright notice, +this list of conditions and the following disclaimer. +- Redistributions in binary form must reproduce the above copyright +notice, this list of conditions and the following disclaimer in the +documentation and/or other materials provided with the distribution. +- Neither the name of Skype Limited, nor the names of specific +contributors, may be used to endorse or promote products derived from +this software without specific prior written permission. + + + + + +NO EXPRESS OR IMPLIED LICENSES TO ANY PARTY'S PATENT RIGHTS ARE GRANTED +BY THIS LICENSE.THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND +CONTRIBUTORS ''AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, +BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND +FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE +COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, +INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT +NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF +USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON +ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT +(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE +OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + +***********************************************************************/ + +/* + * Detect SWB input by measuring energy above 8 kHz. + */ + +#include "SKP_Silk_main.h" + +void SKP_Silk_detect_SWB_input( + SKP_Silk_detect_SWB_state *psSWBdetect, /* (I/O) encoder state */ + const SKP_int16 samplesIn[], /* (I) input to encoder */ + SKP_int nSamplesIn /* (I) length of input */ +) +{ + SKP_int HP_8_kHz_len, i; + SKP_int16 in_HP_8_kHz[ MAX_FRAME_LENGTH ]; + SKP_int32 energy_32, shift; + + /* High pass filter with cutoff at 8 khz */ + HP_8_kHz_len = SKP_min_int( nSamplesIn, MAX_FRAME_LENGTH ); + HP_8_kHz_len = SKP_max_int( HP_8_kHz_len, 0 ); + + /* Cutoff around 9 khz */ + /* A = conv(conv([8192,14613, 6868], [8192,12883, 7337]), [8192,11586, 7911]); */ + /* B = conv(conv([575, -948, 575], [575, -221, 575]), [575, 104, 575]); */ + SKP_Silk_biquad( samplesIn, SKP_Silk_SWB_detect_B_HP_Q13[ 0 ], SKP_Silk_SWB_detect_A_HP_Q13[ 0 ], + psSWBdetect->S_HP_8_kHz[ 0 ], in_HP_8_kHz, HP_8_kHz_len ); + for( i = 1; i < NB_SOS; i++ ) { + SKP_Silk_biquad( in_HP_8_kHz, SKP_Silk_SWB_detect_B_HP_Q13[ i ], SKP_Silk_SWB_detect_A_HP_Q13[ i ], + psSWBdetect->S_HP_8_kHz[ i ], in_HP_8_kHz, HP_8_kHz_len ); + } + + /* Calculate energy in HP signal */ + SKP_Silk_sum_sqr_shift( &energy_32, &shift, in_HP_8_kHz, HP_8_kHz_len ); + + + + + + + /* Count concecutive samples above threshold, after adjusting threshold for number of input samples and shift */ + if( energy_32 > SKP_RSHIFT( SKP_SMULBB( HP_8_KHZ_THRES, HP_8_kHz_len ), shift ) ) { + psSWBdetect->ConsecSmplsAboveThres += nSamplesIn; + if( psSWBdetect->ConsecSmplsAboveThres > CONCEC_SWB_SMPLS_THRES ) { + psSWBdetect->SWB_detected = 1; + } + } else { + psSWBdetect->ConsecSmplsAboveThres -= nSamplesIn; + psSWBdetect->ConsecSmplsAboveThres = SKP_max( psSWBdetect->ConsecSmplsAboveThres, 0 ); + } + + /* If sufficient speech activity and no SWB detected, we detect the signal as being WB */ + if( ( psSWBdetect->ActiveSpeech_ms > WB_DETECT_ACTIVE_SPEECH_MS_THRES ) && ( psSWBdetect->SWB_detected == 0 ) ) { + psSWBdetect->WB_detected = 1; + } +} + + diff --git a/libs/silk/src/SKP_Silk_enc_API.c b/libs/silk/src/SKP_Silk_enc_API.c new file mode 100644 index 0000000000..b5691348ea --- /dev/null +++ b/libs/silk/src/SKP_Silk_enc_API.c @@ -0,0 +1,303 @@ + + +/*********************************************************************** + +Copyright (c) 2006-2010, Skype Limited. All rights reserved. +Redistribution and use in source and binary forms, with or without +modification, (subject to the limitations in the disclaimer below) +are permitted provided that the following conditions are met: +- Redistributions of source code must retain the above copyright notice, +this list of conditions and the following disclaimer. +- Redistributions in binary form must reproduce the above copyright +notice, this list of conditions and the following disclaimer in the +documentation and/or other materials provided with the distribution. +- Neither the name of Skype Limited, nor the names of specific +contributors, may be used to endorse or promote products derived from +this software without specific prior written permission. +NO EXPRESS OR IMPLIED LICENSES TO ANY PARTY'S PATENT RIGHTS ARE GRANTED +BY THIS LICENSE.THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND +CONTRIBUTORS ''AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, +BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND +FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE +COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, +INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT +NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF +USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON +ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT +(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE +OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + + + + + + +***********************************************************************/ + + +#include "SKP_Silk_define.h" +#include "SKP_Silk_main_FIX.h" +#include "SKP_Silk_SDK_API.h" +#include "SKP_Silk_control.h" +#include "SKP_Silk_typedef.h" +#include "SKP_Silk_structs.h" +#define SKP_Silk_EncodeControlStruct SKP_SILK_SDK_EncControlStruct + +/****************************************/ +/* Encoder functions */ +/****************************************/ + +SKP_int SKP_Silk_SDK_Get_Encoder_Size( SKP_int *encSizeBytes ) +{ + SKP_int ret = 0; + + *encSizeBytes = sizeof( SKP_Silk_encoder_state_FIX ); + + return ret; +} + + +/***************************************/ +/* Read control structure from encoder */ +/***************************************/ +SKP_int SKP_Silk_SDK_QueryEncoder( + const void *encState, /* I: State Vector */ + SKP_Silk_EncodeControlStruct *encStatus /* O: Control Structure */ +) +{ + SKP_Silk_encoder_state_FIX *psEnc; + SKP_int ret = 0; + + psEnc = ( SKP_Silk_encoder_state_FIX* )encState; + + encStatus->sampleRate = ( unsigned short )SKP_SMULBB( psEnc->sCmn.fs_kHz, 1000 ); /* convert kHz -> Hz */ + encStatus->packetSize = ( unsigned short )SKP_SMULBB( psEnc->sCmn.fs_kHz, psEnc->sCmn.PacketSize_ms ); /* convert samples -> ms */ + encStatus->bitRate = ( unsigned short )psEnc->sCmn.TargetRate_bps; + encStatus->packetLossPercentage = psEnc->sCmn.PacketLoss_perc; + encStatus->complexity = psEnc->sCmn.Complexity; + + return ret; +} + +/*************************/ + + + + + +/* Init or Reset encoder */ +/*************************/ +SKP_int SKP_Silk_SDK_InitEncoder( + void *encState, /* I/O: State */ + SKP_Silk_EncodeControlStruct *encStatus /* O: Control structure */ +) +{ + SKP_Silk_encoder_state_FIX *psEnc; + SKP_int ret = 0; + + + psEnc = ( SKP_Silk_encoder_state_FIX* )encState; + + /* Reset Encoder */ + if( ret += SKP_Silk_init_encoder_FIX( psEnc ) ) { + SKP_assert( 0 ); + } + + /* Read Control structure */ + if( ret += SKP_Silk_SDK_QueryEncoder( encState, encStatus ) ) { + SKP_assert( 0 ); + } + + + return ret; +} + +/**************************/ +/* Encode frame with Silk */ +/**************************/ +SKP_int SKP_Silk_SDK_Encode( + void *encState, /* I/O: State */ + const SKP_Silk_EncodeControlStruct *encControl, /* I: Control structure */ + const SKP_int16 *samplesIn, /* I: Speech sample input vector */ + SKP_int nSamplesIn, /* I: Number of samples in input vector */ + SKP_uint8 *outData, /* O: Encoded output vector */ + SKP_int16 *nBytesOut /* I/O: Number of bytes in outData (input: Max bytes) */ +) +{ + SKP_int API_fs_kHz, PacketSize_ms, PacketLoss_perc, UseInBandFec, UseDTX, ret = 0; + SKP_int nSamplesToBuffer, Complexity, input_ms, nSamplesFromInput = 0; + SKP_int32 TargetRate_bps; + SKP_int16 MaxBytesOut; + SKP_Silk_encoder_state_FIX *psEnc = ( SKP_Silk_encoder_state_FIX* )encState; + + + SKP_assert( encControl != NULL ); + + + + + + + /* Check sampling frequency first, to avoid divide by zero later */ + if( ( encControl->sampleRate != 8000 ) && ( encControl->sampleRate != 12000 ) && + ( encControl->sampleRate != 16000 ) && ( encControl->sampleRate != 24000 ) ) { + ret = SKP_SILK_ENC_FS_NOT_SUPPORTED; + SKP_assert( 0 ); + return( ret ); + } + + /* Set Encoder parameters from Control structure */ + API_fs_kHz = SKP_DIV32_16( ( SKP_int )encControl->sampleRate, 1000 ); /* convert Hz -> kHz */ + PacketSize_ms = SKP_DIV32_16( ( SKP_int )encControl->packetSize, API_fs_kHz ); /* convert samples -> ms */ + TargetRate_bps = ( SKP_int32 )encControl->bitRate; + PacketLoss_perc = ( SKP_int )encControl->packetLossPercentage; + UseInBandFec = ( SKP_int )encControl->useInBandFec; + Complexity = ( SKP_int )encControl->complexity; + UseDTX = ( SKP_int )encControl->useDtx; + + /* Only accept input lengths that are multiplum of 10 ms */ + input_ms = SKP_DIV32_16( nSamplesIn, API_fs_kHz ); + if( ( input_ms % 10) != 0 || nSamplesIn < 0 ) { + ret = SKP_SILK_ENC_INPUT_INVALID_NO_OF_SAMPLES; + SKP_assert( 0 ); + return( ret ); + } + + /* Make sure no more than one packet can be produced */ + if( nSamplesIn > SKP_SMULBB( psEnc->sCmn.PacketSize_ms, API_fs_kHz ) ) { + ret = SKP_SILK_ENC_INPUT_INVALID_NO_OF_SAMPLES; + SKP_assert( 0 ); + return( ret ); + } + + if( ( ret = SKP_Silk_control_encoder_FIX( psEnc, API_fs_kHz, PacketSize_ms, TargetRate_bps, + PacketLoss_perc, UseInBandFec, UseDTX, input_ms, Complexity ) ) != 0 ) { + SKP_assert( 0 ); + return( ret ); + } + + /* Detect energy above 8 kHz */ + if( encControl->sampleRate == 24000 && psEnc->sCmn.sSWBdetect.SWB_detected == 0 && psEnc->sCmn.sSWBdetect.WB_detected == 0 ) { + SKP_Silk_detect_SWB_input( &psEnc->sCmn.sSWBdetect, samplesIn, ( SKP_int )nSamplesIn ); + } + + /* Input buffering/resampling and encoding */ + MaxBytesOut = 0; /* return 0 output bytes if no encoder called */ + while( 1 ) { + /* Resample/buffer */ + nSamplesToBuffer = psEnc->sCmn.frame_length - psEnc->sCmn.inputBufIx; + + + + + + if( encControl->sampleRate == SKP_SMULBB( psEnc->sCmn.fs_kHz, 1000 ) ) { + /* Same sample frequency - copy the data */ + nSamplesToBuffer = SKP_min_int( nSamplesToBuffer, nSamplesIn ); + nSamplesFromInput = nSamplesToBuffer; + SKP_memcpy( &psEnc->sCmn.inputBuf[ psEnc->sCmn.inputBufIx ], samplesIn, SKP_SMULBB( nSamplesToBuffer, sizeof( SKP_int16 ) ) ); + } else if( encControl->sampleRate == 24000 && psEnc->sCmn.fs_kHz == 16 ) { + /* Resample the data from 24 kHz to 16 kHz */ + nSamplesToBuffer = SKP_min_int( nSamplesToBuffer, SKP_SMULWB( SKP_LSHIFT( nSamplesIn, 1 ), 21846 ) ); // 21846 = ceil(2/3)*2^15 + nSamplesFromInput = SKP_RSHIFT( SKP_SMULBB( nSamplesToBuffer, 3 ), 1 ); +#if LOW_COMPLEXITY_ONLY + { + SKP_int16 scratch[ MAX_FRAME_LENGTH + SigProc_Resample_2_3_coarse_NUM_FIR_COEFS - 1 ]; + SKP_assert( nSamplesFromInput <= MAX_FRAME_LENGTH ); + SKP_Silk_resample_2_3_coarse( &psEnc->sCmn.inputBuf[ psEnc->sCmn.inputBufIx ], psEnc->sCmn.resample24To16state, + samplesIn, nSamplesFromInput, scratch ); + } +#else + SKP_Silk_resample_2_3( &psEnc->sCmn.inputBuf[ psEnc->sCmn.inputBufIx ], psEnc->sCmn.resample24To16state, + samplesIn, nSamplesFromInput ); +#endif + } else if( encControl->sampleRate == 24000 && psEnc->sCmn.fs_kHz == 12 ) { + SKP_int32 scratch[ 3 * MAX_FRAME_LENGTH ]; + /* Resample the data from 24 kHz to 12 kHz */ + nSamplesToBuffer = SKP_min_int( nSamplesToBuffer, SKP_RSHIFT( nSamplesIn, 1 ) ); + nSamplesFromInput = SKP_LSHIFT16( nSamplesToBuffer, 1 ); + SKP_Silk_resample_1_2_coarse( samplesIn, psEnc->sCmn.resample24To12state, + &psEnc->sCmn.inputBuf[ psEnc->sCmn.inputBufIx ], scratch, nSamplesToBuffer ); + } else if( encControl->sampleRate == 24000 && psEnc->sCmn.fs_kHz == 8 ) { + /* Resample the data from 24 kHz to 8 kHz */ + nSamplesToBuffer = SKP_min_int( nSamplesToBuffer, SKP_DIV32_16( nSamplesIn, 3 ) ); + nSamplesFromInput = SKP_SMULBB( nSamplesToBuffer, 3 ); + SKP_Silk_resample_1_3( &psEnc->sCmn.inputBuf[ psEnc->sCmn.inputBufIx ], psEnc->sCmn.resample24To8state, + samplesIn, nSamplesFromInput); + } else if( encControl->sampleRate == 16000 && psEnc->sCmn.fs_kHz == 12 ) { + /* Resample the data from 16 kHz to 12 kHz */ + nSamplesToBuffer = SKP_min_int( nSamplesToBuffer, SKP_RSHIFT( SKP_SMULBB( nSamplesIn, 3 ), 2 ) ); + nSamplesFromInput = SKP_SMULWB( SKP_LSHIFT16( nSamplesToBuffer, 2 ), 21846 ); // 21846 = ceil((1/3)*2^16) + SKP_Silk_resample_3_4( &psEnc->sCmn.inputBuf[ psEnc->sCmn.inputBufIx ], psEnc->sCmn.resample16To12state, + samplesIn, nSamplesFromInput ); + } else if( encControl->sampleRate == 16000 && psEnc->sCmn.fs_kHz == 8 ) { + SKP_int32 scratch[ 3 * MAX_FRAME_LENGTH ]; + /* Resample the data from 16 kHz to 8 kHz */ + nSamplesToBuffer = SKP_min_int( nSamplesToBuffer, SKP_RSHIFT( nSamplesIn, 1 ) ); + nSamplesFromInput = SKP_LSHIFT16( nSamplesToBuffer, 1 ); + SKP_Silk_resample_1_2_coarse( samplesIn, psEnc->sCmn.resample16To8state, + &psEnc->sCmn.inputBuf[ psEnc->sCmn.inputBufIx ], scratch, nSamplesToBuffer ); + } else if( encControl->sampleRate == 12000 && psEnc->sCmn.fs_kHz == 8 ) { + /* Resample the data from 12 kHz to 8 kHz */ + + + + + + nSamplesToBuffer = SKP_min_int( nSamplesToBuffer, SKP_SMULWB( SKP_LSHIFT( nSamplesIn, 1 ), 21846 ) ); + nSamplesFromInput = SKP_RSHIFT( SKP_SMULBB( nSamplesToBuffer, 3 ), 1 ); +#if LOW_COMPLEXITY_ONLY + { + SKP_int16 scratch[ MAX_FRAME_LENGTH + SigProc_Resample_2_3_coarse_NUM_FIR_COEFS - 1 ]; + SKP_assert( nSamplesFromInput <= MAX_FRAME_LENGTH ); + SKP_Silk_resample_2_3_coarse( &psEnc->sCmn.inputBuf[ psEnc->sCmn.inputBufIx ], psEnc->sCmn.resample12To8state, + samplesIn, nSamplesFromInput, scratch ); + } +#else + SKP_Silk_resample_2_3( &psEnc->sCmn.inputBuf[ psEnc->sCmn.inputBufIx ], psEnc->sCmn.resample12To8state, + samplesIn, nSamplesFromInput ); +#endif + } + samplesIn += nSamplesFromInput; + nSamplesIn -= nSamplesFromInput; + psEnc->sCmn.inputBufIx += nSamplesToBuffer; + + /* Silk encoder */ + if( psEnc->sCmn.inputBufIx >= psEnc->sCmn.frame_length ) { + /* Enough data in input buffer, so encode */ + if( MaxBytesOut == 0 ) { + /* No payload obtained so far */ + MaxBytesOut = *nBytesOut; + if( ( ret = SKP_Silk_encode_frame_FIX( psEnc, outData, &MaxBytesOut, psEnc->sCmn.inputBuf ) ) != 0 ) { + SKP_assert( 0 ); + } + } else { + /* outData already contains a payload */ + if( ( ret = SKP_Silk_encode_frame_FIX( psEnc, outData, nBytesOut, psEnc->sCmn.inputBuf ) ) != 0 ) { + SKP_assert( 0 ); + } + /* Check that no second payload was created */ + SKP_assert( *nBytesOut == 0 ); + } + psEnc->sCmn.inputBufIx = 0; + } else { + break; + } + } + + *nBytesOut = MaxBytesOut; + if( psEnc->sCmn.useDTX && psEnc->sCmn.inDTX ) { + /* Dtx simulation */ + *nBytesOut = 0; + } + + + + + + + + return ret; +} + + diff --git a/libs/silk/src/SKP_Silk_encode_frame_FIX.c b/libs/silk/src/SKP_Silk_encode_frame_FIX.c new file mode 100644 index 0000000000..b44d3dec0f --- /dev/null +++ b/libs/silk/src/SKP_Silk_encode_frame_FIX.c @@ -0,0 +1,481 @@ + + +/*********************************************************************** + +Copyright (c) 2006-2010, Skype Limited. All rights reserved. +Redistribution and use in source and binary forms, with or without +modification, (subject to the limitations in the disclaimer below) +are permitted provided that the following conditions are met: +- Redistributions of source code must retain the above copyright notice, +this list of conditions and the following disclaimer. +- Redistributions in binary form must reproduce the above copyright +notice, this list of conditions and the following disclaimer in the +documentation and/or other materials provided with the distribution. +- Neither the name of Skype Limited, nor the names of specific +contributors, may be used to endorse or promote products derived from +this software without specific prior written permission. +NO EXPRESS OR IMPLIED LICENSES TO ANY PARTY'S PATENT RIGHTS ARE GRANTED +BY THIS LICENSE.THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND +CONTRIBUTORS ''AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, +BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND +FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE +COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, +INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT +NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF +USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON +ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT +(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE +OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + +***********************************************************************/ + +#include "SKP_Silk_main_FIX.h" +/****************/ +/* Encode frame */ +/****************/ +SKP_int SKP_Silk_encode_frame_FIX( + SKP_Silk_encoder_state_FIX *psEnc, /* I/O Pointer to Silk FIX encoder state */ + SKP_uint8 *pCode, /* O Pointer to payload */ + SKP_int16 *pnBytesOut, /* I/O Pointer to number of payload bytes */ + /* input: max length; output: used */ + const SKP_int16 *pIn /* I Pointer to input speech frame */ +) +{ + + + + + + SKP_Silk_encoder_control_FIX sEncCtrl; + SKP_int i, nBytes, ret = 0; + SKP_int16 *x_frame, *res_pitch_frame; + SKP_int16 xfw[ MAX_FRAME_LENGTH ]; + SKP_int16 pIn_HP[ MAX_FRAME_LENGTH ]; + SKP_int16 res_pitch[ 2 * MAX_FRAME_LENGTH + LA_PITCH_MAX ]; + SKP_int LBRR_idx, frame_terminator, SNR_dB_Q7; + const SKP_uint16 *FrameTermination_CDF; + + /* Low bitrate redundancy parameters */ + SKP_uint8 LBRRpayload[ MAX_ARITHM_BYTES ]; + SKP_int16 nBytesLBRR; + + //SKP_int32 Seed[ MAX_LAYERS ]; + sEncCtrl.sCmn.Seed = psEnc->sCmn.frameCounter++ & 3; + + + /**************************************************************/ + /* Setup Input Pointers, and insert frame in input buffer */ + /*************************************************************/ + x_frame = psEnc->x_buf + psEnc->sCmn.frame_length; /* start of frame to encode */ + res_pitch_frame = res_pitch + psEnc->sCmn.frame_length; /* start of pitch LPC residual frame */ + + /****************************/ + /* Voice Activity Detection */ + /****************************/ + ret = SKP_Silk_VAD_GetSA_Q8( &psEnc->sCmn.sVAD, &psEnc->speech_activity_Q8, &SNR_dB_Q7, + sEncCtrl.input_quality_bands_Q15, &sEncCtrl.input_tilt_Q15, + pIn,psEnc->sCmn.frame_length ); + + /*******************************************/ + /* High-pass filtering of the input signal */ + /*******************************************/ +#if HIGH_PASS_INPUT + /* Variable high-pass filter */ + SKP_Silk_HP_variable_cutoff_FIX( psEnc, &sEncCtrl, pIn_HP, pIn ); +#else + SKP_memcpy( pIn_HP, pIn,psEnc->sCmn.frame_length * sizeof( SKP_int16 ) ); +#endif + +#if SWITCH_TRANSITION_FILTERING + /* Ensure smooth bandwidth transitions */ + SKP_Silk_LP_variable_cutoff( &psEnc->sCmn.sLP, x_frame + psEnc->sCmn.la_shape, pIn_HP, psEnc->sCmn.frame_length ); +#else + SKP_memcpy( x_frame + psEnc->sCmn.la_shape, pIn_HP,psEnc->sCmn.frame_length * sizeof( SKP_int16 ) ); +#endif + + /*****************************************/ + + + + + + /* Find pitch lags, initial LPC analysis */ + /*****************************************/ + SKP_Silk_find_pitch_lags_FIX( psEnc, &sEncCtrl, res_pitch, x_frame ); + + /************************/ + /* Noise shape analysis */ + /************************/ + SKP_Silk_noise_shape_analysis_FIX( psEnc, &sEncCtrl, res_pitch_frame, x_frame ); + + /*****************************************/ + /* Prefiltering for noise shaper */ + /*****************************************/ + SKP_Silk_prefilter_FIX( psEnc, &sEncCtrl, xfw, x_frame ); + + + /***************************************************/ + /* Find linear prediction coefficients (LPC + LTP) */ + /***************************************************/ + SKP_Silk_find_pred_coefs_FIX( psEnc, &sEncCtrl, res_pitch ); + + /****************************************/ + /* Process gains */ + /****************************************/ + SKP_Silk_process_gains_FIX( psEnc, &sEncCtrl ); + + psEnc->sCmn.sigtype[ psEnc->sCmn.nFramesInPayloadBuf ] = sEncCtrl.sCmn.sigtype; + psEnc->sCmn.QuantOffsetType[ psEnc->sCmn.nFramesInPayloadBuf ] = sEncCtrl.sCmn.QuantOffsetType; + + /****************************************/ + /* Low Bitrate Redundant Encoding */ + /****************************************/ + nBytesLBRR = MAX_ARITHM_BYTES; + SKP_Silk_LBRR_encode_FIX( psEnc, &sEncCtrl, LBRRpayload, &nBytesLBRR, xfw ); + + /*****************************************/ + /* Noise shaping quantization */ + /*****************************************/ + psEnc->NoiseShapingQuantizer( &psEnc->sCmn, &sEncCtrl.sCmn, &psEnc->sNSQ, xfw, + &psEnc->sCmn.q[ psEnc->sCmn.nFramesInPayloadBuf *psEnc->sCmn.frame_length ], sEncCtrl.sCmn.NLSFInterpCoef_Q2, + sEncCtrl.PredCoef_Q12[ 0 ], sEncCtrl.LTPCoef_Q14, sEncCtrl.AR2_Q13, sEncCtrl.HarmShapeGain_Q14, + sEncCtrl.Tilt_Q14, sEncCtrl.LF_shp_Q14, sEncCtrl.Gains_Q16, sEncCtrl.Lambda_Q10, + sEncCtrl.LTP_scale_Q14 ); + + /**************************************************/ + /* Convert speech activity into VAD and DTX flags */ + /**************************************************/ + if( psEnc->speech_activity_Q8 < SPEECH_ACTIVITY_DTX_THRES_Q8 ) { + psEnc->sCmn.vadFlag = NO_VOICE_ACTIVITY; + + + + + + psEnc->sCmn.noSpeechCounter++; + if( psEnc->sCmn.noSpeechCounter > NO_SPEECH_FRAMES_BEFORE_DTX ) { + psEnc->sCmn.inDTX = 1; + } + if( psEnc->sCmn.noSpeechCounter > MAX_CONSECUTIVE_DTX ) { + psEnc->sCmn.noSpeechCounter = 0; + psEnc->sCmn.inDTX = 0; + } + } else { + psEnc->sCmn.noSpeechCounter = 0; + psEnc->sCmn.inDTX = 0; + psEnc->sCmn.vadFlag = VOICE_ACTIVITY; + } + + /****************************************/ + /* Initialize arithmetic coder */ + /****************************************/ + if( psEnc->sCmn.nFramesInPayloadBuf == 0 ) { + SKP_Silk_range_enc_init( &psEnc->sCmn.sRC ); + psEnc->sCmn.nBytesInPayloadBuf = 0; + } + + /****************************************/ + /* Encode Parameters */ + /****************************************/ + if( psEnc->sCmn.bitstream_v == BIT_STREAM_V4 ) { + SKP_Silk_encode_parameters_v4( &psEnc->sCmn, &sEncCtrl.sCmn, &psEnc->sCmn.sRC ); + FrameTermination_CDF = SKP_Silk_FrameTermination_v4_CDF; + } else { + SKP_Silk_encode_parameters( &psEnc->sCmn, &sEncCtrl.sCmn, &psEnc->sCmn.sRC, + &psEnc->sCmn.q[ psEnc->sCmn.nFramesInPayloadBuf *psEnc->sCmn.frame_length ] ); + FrameTermination_CDF = SKP_Silk_FrameTermination_CDF; + } + + /****************************************/ + /* Update Buffers and State */ + /****************************************/ + /* Update Input buffer */ + SKP_memmove( psEnc->x_buf, &psEnc->x_buf[ psEnc->sCmn.frame_length ], ( psEnc->sCmn.frame_length + psEnc->sCmn.la_shape ) * sizeof( SKP_int16 ) ); + + /* parameters needed for next frame */ + psEnc->sCmn.prev_sigtype = sEncCtrl.sCmn.sigtype; + psEnc->sCmn.prevLag = sEncCtrl.sCmn.pitchL[ NB_SUBFR - 1]; + psEnc->sCmn.first_frame_after_reset = 0; + + if( psEnc->sCmn.sRC.error ) { + /* encoder returned error: clear payload buffer */ + psEnc->sCmn.nFramesInPayloadBuf = 0; + + + + + + } else { + psEnc->sCmn.nFramesInPayloadBuf++; + } + + /****************************************/ + /* finalize payload and copy to output */ + /****************************************/ + if( psEnc->sCmn.nFramesInPayloadBuf * FRAME_LENGTH_MS >= psEnc->sCmn.PacketSize_ms ) { + + LBRR_idx = ( psEnc->sCmn.oldest_LBRR_idx + 1 ) & LBRR_IDX_MASK; + + /* Check if FEC information should be added */ + frame_terminator = SKP_SILK_LAST_FRAME; + if( psEnc->sCmn.LBRR_buffer[ LBRR_idx ].usage == SKP_SILK_ADD_LBRR_TO_PLUS1 ) { + frame_terminator = SKP_SILK_LBRR_VER1; + } + if( psEnc->sCmn.LBRR_buffer[ psEnc->sCmn.oldest_LBRR_idx ].usage == SKP_SILK_ADD_LBRR_TO_PLUS2 ) { + frame_terminator = SKP_SILK_LBRR_VER2; + LBRR_idx = psEnc->sCmn.oldest_LBRR_idx; + } + /* Add the frame termination info to stream */ + SKP_Silk_range_encoder( &psEnc->sCmn.sRC, frame_terminator, FrameTermination_CDF ); + + if( psEnc->sCmn.bitstream_v == BIT_STREAM_V4 ) { + /* Code excitation signal */ + for( i = 0; i sCmn.nFramesInPayloadBuf; i++ ) { + SKP_Silk_encode_pulses( &psEnc->sCmn.sRC, psEnc->sCmn.sigtype[ i ],psEnc->sCmn.QuantOffsetType[ i ], + &psEnc->sCmn.q[ i * psEnc->sCmn.frame_length],psEnc->sCmn.frame_length ); + } + } + /* payload length so far */ + SKP_Silk_range_coder_get_length( &psEnc->sCmn.sRC, &nBytes ); + + /* check that there is enough space in external output buffer, and move data */ + if( *pnBytesOut >= nBytes ) { + SKP_Silk_range_enc_wrap_up( &psEnc->sCmn.sRC ); + SKP_memcpy( pCode, psEnc->sCmn.sRC.buffer, nBytes * sizeof( SKP_uint8 ) ); + + if( frame_terminator > SKP_SILK_MORE_FRAMES && + *pnBytesOut >= nBytes + psEnc->sCmn.LBRR_buffer[ LBRR_idx ].nBytes ) { + /* Get old packet and add to payload. */ + SKP_memcpy( &pCode[ nBytes ], + psEnc->sCmn.LBRR_buffer[ LBRR_idx ].payload, + psEnc->sCmn.LBRR_buffer[ LBRR_idx ].nBytes * sizeof( SKP_uint8 ) ); + nBytes += psEnc->sCmn.LBRR_buffer[ LBRR_idx ].nBytes; + } + + *pnBytesOut = nBytes; + + + + + + /* Update FEC buffer */ + SKP_memcpy( psEnc->sCmn.LBRR_buffer[ psEnc->sCmn.oldest_LBRR_idx ].payload, LBRRpayload, + nBytesLBRR * sizeof( SKP_uint8 ) ); + psEnc->sCmn.LBRR_buffer[ psEnc->sCmn.oldest_LBRR_idx ].nBytes = nBytesLBRR; + /* This line tells describes how FEC should be used */ + psEnc->sCmn.LBRR_buffer[ psEnc->sCmn.oldest_LBRR_idx ].usage = sEncCtrl.sCmn.LBRR_usage; + psEnc->sCmn.oldest_LBRR_idx = ( psEnc->sCmn.oldest_LBRR_idx + 1 ) & LBRR_IDX_MASK; + + /* Reset number of frames in payload buffer */ + psEnc->sCmn.nFramesInPayloadBuf = 0; + } else { + /* Not enough space: Payload will be discarded */ + *pnBytesOut = 0; + nBytes = 0; + psEnc->sCmn.nFramesInPayloadBuf = 0; + ret = SKP_SILK_ENC_PAYLOAD_BUF_TOO_SHORT; + } + } else { + /* no payload for you this time */ + *pnBytesOut = 0; + + /* Encode that more frames follows */ + frame_terminator = SKP_SILK_MORE_FRAMES; + SKP_Silk_range_encoder( &psEnc->sCmn.sRC, frame_terminator, FrameTermination_CDF ); + + /* payload length so far */ + SKP_Silk_range_coder_get_length( &psEnc->sCmn.sRC, &nBytes ); + + if( psEnc->sCmn.bitstream_v == BIT_STREAM_V4 ) { + /* Take into account the q signal that isnt in the bitstream yet */ + nBytes += SKP_Silk_pulses_to_bytes( &psEnc->sCmn, + &psEnc->sCmn.q[ (psEnc->sCmn.nFramesInPayloadBuf - 1) * psEnc->sCmn.frame_length ] ); + } + } + + /* Check for arithmetic coder errors */ + if( psEnc->sCmn.sRC.error ) { + ret = SKP_SILK_ENC_INTERNAL_ERROR; + } + + /* simulate number of ms buffered in channel because of exceeding TargetRate */ + SKP_assert( ( 8 * 1000 * ( (SKP_int64)nBytes - (SKP_int64)psEnc->sCmn.nBytesInPayloadBuf ) ) == + SKP_SAT32( 8 * 1000 * ( (SKP_int64)nBytes - (SKP_int64)psEnc->sCmn.nBytesInPayloadBuf ) ) ); + SKP_assert( psEnc->sCmn.TargetRate_bps > 0 ); + psEnc->BufferedInChannel_ms += SKP_DIV32( 8 * 1000 * ( nBytes -psEnc->sCmn.nBytesInPayloadBuf ),psEnc->sCmn.TargetRate_bps ); + psEnc->BufferedInChannel_ms -= FRAME_LENGTH_MS; + psEnc->BufferedInChannel_ms = SKP_LIMIT( psEnc->BufferedInChannel_ms, 0, 100 ); + psEnc->sCmn.nBytesInPayloadBuf = nBytes; + + + + + + if( psEnc->speech_activity_Q8 > WB_DETECT_ACTIVE_SPEECH_LEVEL_THRES_Q8 ) { + psEnc->sCmn.sSWBdetect.ActiveSpeech_ms = SKP_ADD_POS_SAT32( psEnc->sCmn.sSWBdetect.ActiveSpeech_ms, FRAME_LENGTH_MS ); + } + + + return( ret ); +} + +/* Low BitRate Redundancy encoding functionality. Reuse all parameters but encode residual with lower bitrate */ +void SKP_Silk_LBRR_encode_FIX( + SKP_Silk_encoder_state_FIX *psEnc, /* I/O Pointer to Silk encoder state */ + SKP_Silk_encoder_control_FIX *psEncCtrl, /* I/O Pointer to Silk encoder control struct */ + SKP_uint8 *pCode, /* O Pointer to payload */ + SKP_int16 *pnBytesOut, /* I/O Pointer to number of payload bytes */ + SKP_int16 xfw[] /* I Input signal */ +) +{ + SKP_int i, TempGainsIndices[ NB_SUBFR ], frame_terminator; + SKP_int nBytes, nFramesInPayloadBuf; + SKP_int32 TempGains_Q16[ NB_SUBFR ]; + SKP_int typeOffset, LTP_scaleIndex, Rate_only_parameters = 0; + /*******************************************/ + /* Control use of inband LBRR */ + /*******************************************/ + SKP_Silk_LBRR_ctrl_FIX( psEnc, psEncCtrl ); + + if( psEnc->sCmn.LBRR_enabled ) { + /* Save original Gains */ + SKP_memcpy( TempGainsIndices, psEncCtrl->sCmn.GainsIndices, NB_SUBFR * sizeof( SKP_int ) ); + SKP_memcpy( TempGains_Q16, psEncCtrl->Gains_Q16, NB_SUBFR * sizeof( SKP_int32 ) ); + + typeOffset = psEnc->sCmn.typeOffsetPrev; // Temp save as cannot be overwritten + LTP_scaleIndex = psEncCtrl->sCmn.LTP_scaleIndex; + + /* Set max rate where quant signal is encoded */ + if( psEnc->sCmn.fs_kHz == 8 ) { + Rate_only_parameters = 13500; + } else if( psEnc->sCmn.fs_kHz == 12 ) { + Rate_only_parameters = 15500; + } else if( psEnc->sCmn.fs_kHz == 16 ) { + Rate_only_parameters = 17500; + } else if( psEnc->sCmn.fs_kHz == 24 ) { + Rate_only_parameters = 19500; + } else { + SKP_assert( 0 ); + } + + if( psEnc->sCmn.Complexity > 0 && psEnc->sCmn.TargetRate_bps > Rate_only_parameters ) { + + + + + + if( psEnc->sCmn.nFramesInPayloadBuf == 0 ) { + /* First frame in packet copy Everything */ + SKP_memcpy( &psEnc->sNSQ_LBRR, &psEnc->sNSQ, sizeof( SKP_Silk_nsq_state ) ); + + psEnc->sCmn.LBRRprevLastGainIndex = psEnc->sShape.LastGainIndex; + /* Increase Gains to get target LBRR rate */ + psEncCtrl->sCmn.GainsIndices[ 0 ] = psEncCtrl->sCmn.GainsIndices[ 0 ] + psEnc->sCmn.LBRR_GainIncreases; + psEncCtrl->sCmn.GainsIndices[ 0 ] = SKP_LIMIT( psEncCtrl->sCmn.GainsIndices[ 0 ], 0, N_LEVELS_QGAIN - 1 ); + } + /* Decode to get Gains in sync with decoder */ + /* Overwrite unquantized gains with quantized gains */ + SKP_Silk_gains_dequant( psEncCtrl->Gains_Q16, psEncCtrl->sCmn.GainsIndices, + &psEnc->sCmn.LBRRprevLastGainIndex, psEnc->sCmn.nFramesInPayloadBuf ); + /*****************************************/ + /* Noise shaping quantization */ + /*****************************************/ + psEnc->NoiseShapingQuantizer( &psEnc->sCmn, &psEncCtrl->sCmn, + &psEnc->sNSQ_LBRR, xfw, &psEnc->sCmn.q_LBRR[ psEnc->sCmn.nFramesInPayloadBuf * psEnc->sCmn.frame_length ], + psEncCtrl->sCmn.NLSFInterpCoef_Q2, psEncCtrl->PredCoef_Q12[ 0 ], psEncCtrl->LTPCoef_Q14, + psEncCtrl->AR2_Q13, psEncCtrl->HarmShapeGain_Q14, psEncCtrl->Tilt_Q14, psEncCtrl->LF_shp_Q14, + psEncCtrl->Gains_Q16, psEncCtrl->Lambda_Q10, psEncCtrl->LTP_scale_Q14 ); + } else { + SKP_memset( &psEnc->sCmn.q_LBRR[ psEnc->sCmn.nFramesInPayloadBuf *psEnc->sCmn.frame_length ], 0, + psEnc->sCmn.frame_length * sizeof( SKP_int ) ); + psEncCtrl->sCmn.LTP_scaleIndex = 0; + } + /****************************************/ + /* Initialize arithmetic coder */ + /****************************************/ + if( psEnc->sCmn.nFramesInPayloadBuf == 0 ) { + SKP_Silk_range_enc_init( &psEnc->sCmn.sRC_LBRR ); + psEnc->sCmn.nBytesInPayloadBuf = 0; + } + + /****************************************/ + /* Encode Parameters */ + /****************************************/ + if( psEnc->sCmn.bitstream_v == BIT_STREAM_V4 ) { + SKP_Silk_encode_parameters_v4( &psEnc->sCmn, &psEncCtrl->sCmn, &psEnc->sCmn.sRC_LBRR ); + } else { + SKP_Silk_encode_parameters( &psEnc->sCmn, &psEncCtrl->sCmn, &psEnc->sCmn.sRC_LBRR, + &psEnc->sCmn.q_LBRR[ psEnc->sCmn.nFramesInPayloadBuf * psEnc->sCmn.frame_length] ); + } + + if( psEnc->sCmn.sRC_LBRR.error ) { + /* encoder returned error: clear payload buffer */ + nFramesInPayloadBuf = 0; + } else { + + + + + + nFramesInPayloadBuf = psEnc->sCmn.nFramesInPayloadBuf + 1; + } + + /****************************************/ + /* finalize payload and copy to output */ + /****************************************/ + if( SKP_SMULBB( nFramesInPayloadBuf, FRAME_LENGTH_MS ) >= psEnc->sCmn.PacketSize_ms ) { + + /* Check if FEC information should be added */ + frame_terminator = SKP_SILK_LAST_FRAME; + + /* Add the frame termination info to stream */ + SKP_Silk_range_encoder( &psEnc->sCmn.sRC_LBRR, frame_terminator, SKP_Silk_FrameTermination_CDF ); + + if( psEnc->sCmn.bitstream_v == BIT_STREAM_V4 ) { + /*********************************************/ + /* Encode quantization indices of excitation */ + /*********************************************/ + for( i = 0; i < nFramesInPayloadBuf; i++ ) { + SKP_Silk_encode_pulses( &psEnc->sCmn.sRC_LBRR, psEnc->sCmn.sigtype[ i ], psEnc->sCmn.QuantOffsetType[ i ], + &psEnc->sCmn.q_LBRR[ i * psEnc->sCmn.frame_length ], psEnc->sCmn.frame_length ); + } + } + /* payload length so far */ + SKP_Silk_range_coder_get_length( &psEnc->sCmn.sRC_LBRR, &nBytes ); + + /* check that there is enough space in external output buffer, and move data */ + if( *pnBytesOut >= nBytes ) { + SKP_Silk_range_enc_wrap_up( &psEnc->sCmn.sRC_LBRR ); + SKP_memcpy( pCode, psEnc->sCmn.sRC_LBRR.buffer, nBytes * sizeof( SKP_uint8 ) ); + + *pnBytesOut = nBytes; + } else { + /* not enough space: payload will be discarded */ + *pnBytesOut = 0; + SKP_assert( 0 ); + } + } else { + /* no payload for you this time */ + *pnBytesOut = 0; + + /* Encode that more frames follows */ + frame_terminator = SKP_SILK_MORE_FRAMES; + SKP_Silk_range_encoder( &psEnc->sCmn.sRC_LBRR, frame_terminator, SKP_Silk_FrameTermination_CDF ); + } + + /* Restore original Gains */ + SKP_memcpy( psEncCtrl->sCmn.GainsIndices, TempGainsIndices, NB_SUBFR * sizeof( SKP_int ) ); + + + + + + SKP_memcpy( psEncCtrl->Gains_Q16, TempGains_Q16, NB_SUBFR * sizeof( SKP_int32 ) ); + + /* Restore LTP scale index and typeoffset */ + psEncCtrl->sCmn.LTP_scaleIndex = LTP_scaleIndex; + psEnc->sCmn.typeOffsetPrev = typeOffset; + } +} + + diff --git a/libs/silk/src/SKP_Silk_encode_parameters.c b/libs/silk/src/SKP_Silk_encode_parameters.c new file mode 100644 index 0000000000..8465ca7a2f --- /dev/null +++ b/libs/silk/src/SKP_Silk_encode_parameters.c @@ -0,0 +1,186 @@ + + +/*********************************************************************** + +Copyright (c) 2006-2010, Skype Limited. All rights reserved. +Redistribution and use in source and binary forms, with or without +modification, (subject to the limitations in the disclaimer below) +are permitted provided that the following conditions are met: +- Redistributions of source code must retain the above copyright notice, +this list of conditions and the following disclaimer. +- Redistributions in binary form must reproduce the above copyright +notice, this list of conditions and the following disclaimer in the +documentation and/or other materials provided with the distribution. +- Neither the name of Skype Limited, nor the names of specific +contributors, may be used to endorse or promote products derived from +this software without specific prior written permission. +NO EXPRESS OR IMPLIED LICENSES TO ANY PARTY'S PATENT RIGHTS ARE GRANTED +BY THIS LICENSE.THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND +CONTRIBUTORS ''AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, +BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND +FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE +COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, +INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT +NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF +USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON +ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT +(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE +OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + +***********************************************************************/ + +#include "SKP_Silk_main.h" + +/*******************************************/ +/* Encode parameters to create the payload */ +/*******************************************/ +void SKP_Silk_encode_parameters( + SKP_Silk_encoder_state *psEncC, /* I/O Encoder state */ + + + + + + SKP_Silk_encoder_control *psEncCtrlC, /* I/O Encoder control */ + SKP_Silk_range_coder_state *psRC, /* I/O Range encoder state */ + const SKP_int *q /* I Quantization indices */ +) +{ + SKP_int i, k, typeOffset; + const SKP_Silk_NLSF_CB_struct *psNLSF_CB; + + + /************************/ + /* Encode sampling rate */ + /************************/ + /* only done for first frame in packet */ + if( psEncC->nFramesInPayloadBuf == 0 ) { + + /* Initialize arithmetic coder */ + SKP_Silk_range_enc_init( &psEncC->sRC ); + psEncC->nBytesInPayloadBuf = 0; + + /* get sampling rate index */ + for( i = 0; i < 3; i++ ) { + if( SKP_Silk_SamplingRates_table[ i ] == psEncC->fs_kHz ) { + break; + } + } + SKP_Silk_range_encoder( psRC, i, SKP_Silk_SamplingRates_CDF ); + } + + /*******************************************/ + /* Encode signal type and quantizer offset */ + /*******************************************/ + typeOffset = 2 * psEncCtrlC->sigtype + psEncCtrlC->QuantOffsetType; + if( psEncC->nFramesInPayloadBuf == 0 ) { + /* first frame in packet: independent coding */ + SKP_Silk_range_encoder( psRC, typeOffset, SKP_Silk_type_offset_CDF ); + } else { + /* condidtional coding */ + SKP_Silk_range_encoder( psRC, typeOffset, SKP_Silk_type_offset_joint_CDF[ psEncC->typeOffsetPrev ] ); + } + psEncC->typeOffsetPrev = typeOffset; + + /****************/ + /* Encode gains */ + /****************/ + /* first subframe */ + if( psEncC->nFramesInPayloadBuf == 0 ) { + /* first frame in packet: independent coding */ + SKP_Silk_range_encoder( psRC, psEncCtrlC->GainsIndices[ 0 ], SKP_Silk_gain_CDF[ psEncCtrlC->sigtype ] ); + + + + + + } else { + /* condidtional coding */ + SKP_Silk_range_encoder( psRC, psEncCtrlC->GainsIndices[ 0 ], SKP_Silk_delta_gain_CDF ); + } + + /* remaining subframes */ + for( i = 1; i < NB_SUBFR; i++ ) { + SKP_Silk_range_encoder( psRC, psEncCtrlC->GainsIndices[ i ], SKP_Silk_delta_gain_CDF ); + } + + /****************/ + /* Encode NLSFs */ + /****************/ + /* Range encoding of the NLSF path */ + psNLSF_CB = psEncC->psNLSF_CB[ psEncCtrlC->sigtype ]; + SKP_Silk_range_encoder_multi( psRC, psEncCtrlC->NLSFIndices, psNLSF_CB->StartPtr, psNLSF_CB->nStages ); + + /* Encode NLSF interpolation factor */ + SKP_assert( psEncC->useInterpolatedNLSFs == 1 || psEncCtrlC->NLSFInterpCoef_Q2 == ( 1 << 2 ) ); + SKP_Silk_range_encoder( psRC, psEncCtrlC->NLSFInterpCoef_Q2, SKP_Silk_NLSF_interpolation_factor_CDF ); + + + if( psEncCtrlC->sigtype == SIG_TYPE_VOICED ) { + /*********************/ + /* Encode pitch lags */ + /*********************/ + + + /* lag index */ + if( psEncC->fs_kHz == 8 ) { + SKP_Silk_range_encoder( psRC, psEncCtrlC->lagIndex, SKP_Silk_pitch_lag_NB_CDF ); + } else if( psEncC->fs_kHz == 12 ) { + SKP_Silk_range_encoder( psRC, psEncCtrlC->lagIndex, SKP_Silk_pitch_lag_MB_CDF ); + } else if( psEncC->fs_kHz == 16 ) { + SKP_Silk_range_encoder( psRC, psEncCtrlC->lagIndex, SKP_Silk_pitch_lag_WB_CDF ); + } else { + SKP_Silk_range_encoder( psRC, psEncCtrlC->lagIndex, SKP_Silk_pitch_lag_SWB_CDF ); + } + + + /* countour index */ + if( psEncC->fs_kHz == 8 ) { + /* Less codevectors used in 8 khz mode */ + SKP_Silk_range_encoder( psRC, psEncCtrlC->contourIndex, SKP_Silk_pitch_contour_NB_CDF ); + } else { + /* Joint for 12, 16, 24 khz */ + SKP_Silk_range_encoder( psRC, psEncCtrlC->contourIndex, SKP_Silk_pitch_contour_CDF ); + } + + + + + + /********************/ + /* Encode LTP gains */ + /********************/ + + /* PERIndex value */ + SKP_Silk_range_encoder( psRC, psEncCtrlC->PERIndex, SKP_Silk_LTP_per_index_CDF ); + + /* Codebook Indices */ + for( k = 0; k < NB_SUBFR; k++ ) { + SKP_Silk_range_encoder( psRC, psEncCtrlC->LTPIndex[ k ], SKP_Silk_LTP_gain_CDF_ptrs[ psEncCtrlC->PERIndex ] ); + } + + /**********************/ + /* Encode LTP scaling */ + /**********************/ + SKP_Silk_range_encoder( psRC, psEncCtrlC->LTP_scaleIndex, SKP_Silk_LTPscale_CDF ); + } + + + /***************/ + /* Encode seed */ + /***************/ + SKP_Silk_range_encoder( psRC, psEncCtrlC->Seed, SKP_Silk_Seed_CDF ); + + /*********************************************/ + /* Encode quantization indices of excitation */ + /*********************************************/ + SKP_Silk_encode_pulses( psRC, psEncCtrlC->sigtype, psEncCtrlC->QuantOffsetType, q, psEncC->frame_length ); + + + /*********************************************/ + /* Encode VAD flag */ + /*********************************************/ + SKP_Silk_range_encoder( psRC, psEncC->vadFlag, SKP_Silk_vadflag_CDF ); +} + + diff --git a/libs/silk/src/SKP_Silk_encode_parameters_v4.c b/libs/silk/src/SKP_Silk_encode_parameters_v4.c new file mode 100644 index 0000000000..37ab1c731e --- /dev/null +++ b/libs/silk/src/SKP_Silk_encode_parameters_v4.c @@ -0,0 +1,204 @@ + + +/*********************************************************************** + +Copyright (c) 2006-2010, Skype Limited. All rights reserved. +Redistribution and use in source and binary forms, with or without +modification, (subject to the limitations in the disclaimer below) +are permitted provided that the following conditions are met: +- Redistributions of source code must retain the above copyright notice, +this list of conditions and the following disclaimer. + + + + + +- Redistributions in binary form must reproduce the above copyright +notice, this list of conditions and the following disclaimer in the +documentation and/or other materials provided with the distribution. +- Neither the name of Skype Limited, nor the names of specific +contributors, may be used to endorse or promote products derived from +this software without specific prior written permission. +NO EXPRESS OR IMPLIED LICENSES TO ANY PARTY'S PATENT RIGHTS ARE GRANTED +BY THIS LICENSE.THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND +CONTRIBUTORS ''AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, +BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND +FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE +COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, +INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT +NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF +USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON +ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT +(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE +OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + +***********************************************************************/ + +#include "SKP_Silk_main.h" + +/*******************************************/ +/* Encode parameters to create the payload */ +/*******************************************/ +void SKP_Silk_encode_parameters_v4( + SKP_Silk_encoder_state *psEncC, /* I/O state */ + SKP_Silk_encoder_control *psEncCtrlC, /* I/O Encoder control */ + SKP_Silk_range_coder_state *psRC /* I/O Range encoder state */ +) +{ + SKP_int i, k, typeOffset; + SKP_int encode_absolute_lagIndex, delta_lagIndex; + const SKP_Silk_NLSF_CB_struct *psNLSF_CB; + + + /************************/ + /* Encode sampling rate */ + /************************/ + /* only done for first frame in packet */ + if( psEncC->nFramesInPayloadBuf == 0 ) { + + /* Initialize arithmetic coder */ + SKP_Silk_range_enc_init( &psEncC->sRC ); + psEncC->nBytesInPayloadBuf = 0; + + /* get sampling rate index */ + + + + + + for( i = 0; i < 3; i++ ) { + if( SKP_Silk_SamplingRates_table[ i ] == psEncC->fs_kHz ) { + break; + } + } + SKP_Silk_range_encoder( psRC, i, SKP_Silk_SamplingRates_CDF ); + } + + /*********************************************/ + /* Encode VAD flag */ + /*********************************************/ + SKP_Silk_range_encoder( psRC, psEncC->vadFlag, SKP_Silk_vadflag_CDF ); + + /*******************************************/ + /* Encode signal type and quantizer offset */ + /*******************************************/ + typeOffset = SKP_LSHIFT( psEncCtrlC->sigtype, 1 ) + psEncCtrlC->QuantOffsetType; + if( psEncC->nFramesInPayloadBuf == 0 ) { + /* first frame in packet: independent coding */ + SKP_Silk_range_encoder( psRC, typeOffset, SKP_Silk_type_offset_CDF ); + } else { + /* condidtional coding */ + SKP_Silk_range_encoder( psRC, typeOffset, SKP_Silk_type_offset_joint_CDF[ psEncC->typeOffsetPrev ] ); + } + psEncC->typeOffsetPrev = typeOffset; + + /****************/ + /* Encode gains */ + /****************/ + /* first subframe */ + if( psEncC->nFramesInPayloadBuf == 0 ) { + /* first frame in packet: independent coding */ + SKP_Silk_range_encoder( psRC, psEncCtrlC->GainsIndices[ 0 ], SKP_Silk_gain_CDF[ psEncCtrlC->sigtype ] ); + } else { + /* condidtional coding */ + SKP_Silk_range_encoder( psRC, psEncCtrlC->GainsIndices[ 0 ], SKP_Silk_delta_gain_CDF ); + } + + /* remaining subframes */ + for( i = 1; i < NB_SUBFR; i++ ) { + SKP_Silk_range_encoder( psRC, psEncCtrlC->GainsIndices[ i ], SKP_Silk_delta_gain_CDF ); + } + + + /****************/ + /* Encode NLSFs */ + /****************/ + /* Range encoding of the NLSF path */ + + + + + + psNLSF_CB = psEncC->psNLSF_CB[ psEncCtrlC->sigtype ]; + SKP_Silk_range_encoder_multi( psRC, psEncCtrlC->NLSFIndices, psNLSF_CB->StartPtr, psNLSF_CB->nStages ); + + /* Encode NLSF interpolation factor */ + SKP_assert( psEncC->useInterpolatedNLSFs == 1 || psEncCtrlC->NLSFInterpCoef_Q2 == ( 1 << 2 ) ); + SKP_Silk_range_encoder( psRC, psEncCtrlC->NLSFInterpCoef_Q2, SKP_Silk_NLSF_interpolation_factor_CDF ); + + + if( psEncCtrlC->sigtype == SIG_TYPE_VOICED ) { + /*********************/ + /* Encode pitch lags */ + /*********************/ + + + /* lag index */ + encode_absolute_lagIndex = 1; + if( psEncC->nFramesInPayloadBuf > 0 && psEncC->prev_sigtype == SIG_TYPE_VOICED ) { + /* Delta Encoding */ + delta_lagIndex = psEncCtrlC->lagIndex - psEncC->prev_lagIndex; + if( delta_lagIndex > MAX_DELTA_LAG ) { + delta_lagIndex = ( MAX_DELTA_LAG << 1 ) + 1; + } else if ( delta_lagIndex < -MAX_DELTA_LAG ) { + delta_lagIndex = ( MAX_DELTA_LAG << 1 ) + 1; + } else { + delta_lagIndex = delta_lagIndex + MAX_DELTA_LAG; + encode_absolute_lagIndex = 0; /* Only use delta */ + } + SKP_Silk_range_encoder( psRC, delta_lagIndex, SKP_Silk_pitch_delta_CDF ); + } + if( encode_absolute_lagIndex ) { + /* Absolute encoding */ + if( psEncC->fs_kHz == 8 ) { + SKP_Silk_range_encoder( psRC, psEncCtrlC->lagIndex, SKP_Silk_pitch_lag_NB_CDF ); + } else if( psEncC->fs_kHz == 12 ) { + SKP_Silk_range_encoder( psRC, psEncCtrlC->lagIndex, SKP_Silk_pitch_lag_MB_CDF ); + } else if( psEncC->fs_kHz == 16 ) { + SKP_Silk_range_encoder( psRC, psEncCtrlC->lagIndex, SKP_Silk_pitch_lag_WB_CDF ); + } else { + SKP_Silk_range_encoder( psRC, psEncCtrlC->lagIndex, SKP_Silk_pitch_lag_SWB_CDF ); + } + } + psEncC->prev_lagIndex = psEncCtrlC->lagIndex; + + + /* countour index */ + if( psEncC->fs_kHz == 8 ) { + /* Less codevectors used in 8 khz mode */ + SKP_Silk_range_encoder( psRC, psEncCtrlC->contourIndex, SKP_Silk_pitch_contour_NB_CDF ); + + + + + + } else { + /* Joint for 12, 16, 24 khz */ + SKP_Silk_range_encoder( psRC, psEncCtrlC->contourIndex, SKP_Silk_pitch_contour_CDF ); + } + + /********************/ + /* Encode LTP gains */ + /********************/ + + /* PERIndex value */ + SKP_Silk_range_encoder( psRC, psEncCtrlC->PERIndex, SKP_Silk_LTP_per_index_CDF ); + + /* Codebook Indices */ + for( k = 0; k < NB_SUBFR; k++ ) { + SKP_Silk_range_encoder( psRC, psEncCtrlC->LTPIndex[ k ], SKP_Silk_LTP_gain_CDF_ptrs[ psEncCtrlC->PERIndex ] ); + } + + /**********************/ + /* Encode LTP scaling */ + /**********************/ + SKP_Silk_range_encoder( psRC, psEncCtrlC->LTP_scaleIndex, SKP_Silk_LTPscale_CDF ); + } + + /***************/ + /* Encode seed */ + /***************/ + SKP_Silk_range_encoder( psRC, psEncCtrlC->Seed, SKP_Silk_Seed_CDF ); +} + + diff --git a/libs/silk/src/SKP_Silk_encode_pulses.c b/libs/silk/src/SKP_Silk_encode_pulses.c new file mode 100644 index 0000000000..afc8a14650 --- /dev/null +++ b/libs/silk/src/SKP_Silk_encode_pulses.c @@ -0,0 +1,220 @@ + + +/*********************************************************************** + +Copyright (c) 2006-2010, Skype Limited. All rights reserved. +Redistribution and use in source and binary forms, with or without +modification, (subject to the limitations in the disclaimer below) +are permitted provided that the following conditions are met: +- Redistributions of source code must retain the above copyright notice, +this list of conditions and the following disclaimer. +- Redistributions in binary form must reproduce the above copyright +notice, this list of conditions and the following disclaimer in the +documentation and/or other materials provided with the distribution. +- Neither the name of Skype Limited, nor the names of specific +contributors, may be used to endorse or promote products derived from +this software without specific prior written permission. +NO EXPRESS OR IMPLIED LICENSES TO ANY PARTY'S PATENT RIGHTS ARE GRANTED + + + + + +BY THIS LICENSE.THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND +CONTRIBUTORS ''AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, +BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND +FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE +COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, +INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT +NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF +USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON +ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT +(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE +OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + +***********************************************************************/ + +#include "SKP_Silk_main.h" + +/*********************************************/ +/* Encode quantization indices of excitation */ +/*********************************************/ + +SKP_INLINE SKP_int combine_and_check( /* return ok */ + SKP_int *pulses_comb, /* O */ + const SKP_int *pulses_in, /* I */ + SKP_int max_pulses, /* I max value for sum of pulses */ + SKP_int len /* I number of output values */ +) +{ + SKP_int k, sum; + + for( k = 0; k < len; k++ ) { + sum = pulses_in[2*k] + pulses_in[2*k+1]; + if( sum > max_pulses ) { + return 1; + } + pulses_comb[ k ] = sum; + } + + return 0; +} + +/* Encode quantization indices of excitation */ +void SKP_Silk_encode_pulses( + SKP_Silk_range_coder_state *psRC, /* I/O Range coder state */ + const SKP_int sigtype, /* I Sigtype */ + const SKP_int QuantOffsetType,/* I QuantOffsetType */ + const SKP_int q[], /* I quantization indices */ + const SKP_int frame_length /* I Frame length */ +) + + + + + +{ + SKP_int i, k, j, iter, bit, nLS, scale_down, RateLevelIndex = 0; + SKP_int32 abs_q, minSumBits_Q6, sumBits_Q6; + SKP_int abs_pulses[MAX_FRAME_LENGTH]; + SKP_int pulses_comb[ 8 ]; + SKP_int sum_pulses[MAX_NB_SHELL_BLOCKS], nRshifts[MAX_NB_SHELL_BLOCKS]; + SKP_int *abs_pulses_ptr; + const SKP_int *pulses_ptr; + const SKP_uint16 *cdf_ptr; + const SKP_int16 *nBits_ptr; + + SKP_memset( pulses_comb, 0, 8 * sizeof(SKP_int)); // Fixing Valgrind reported problem + + /********************************/ + /* Prepare for shell coding */ + /********************************/ + /* Calculate number of shell blocks */ + iter = frame_length / SHELL_CODEC_FRAME_LENGTH; + + /* Take the absolute value of the pulses */ + for( i = 0; i < frame_length; i+=4 ) { + abs_pulses[i+0] = (SKP_int)SKP_abs(q[i+0]); + abs_pulses[i+1] = (SKP_int)SKP_abs(q[i+1]); + abs_pulses[i+2] = (SKP_int)SKP_abs(q[i+2]); + abs_pulses[i+3] = (SKP_int)SKP_abs(q[i+3]); + } + + /* Calc sum pulses per shell code frame */ + abs_pulses_ptr = abs_pulses; + for( i = 0; i < iter; i++ ) { + nRshifts[ i ] = 0; + + while (1) { + /* 1+1 -> 2 */ + scale_down = combine_and_check(pulses_comb, abs_pulses_ptr, SKP_Silk_max_pulses_table[ 0 ], 8); + + /* 2+2 -> 4 */ + scale_down += combine_and_check(pulses_comb, pulses_comb, SKP_Silk_max_pulses_table[ 1 ], 4); + + /* 4+4 -> 8 */ + scale_down += combine_and_check(pulses_comb, pulses_comb, SKP_Silk_max_pulses_table[ 2 ], 2); + + /* 8+8 -> 16 */ + sum_pulses[ i ] = pulses_comb[ 0 ] + pulses_comb[ 1 ]; + if( sum_pulses[ i ] > SKP_Silk_max_pulses_table[ 3 ] ) { + scale_down++; + } + + + + + + + if( scale_down ) { + /* We need to down scale the Quantization Signal */ + nRshifts[ i ]++; + for( k = 0; k < SHELL_CODEC_FRAME_LENGTH; k++ ) { + abs_pulses_ptr[ k ] = SKP_RSHIFT(abs_pulses_ptr[ k ], 1); + } + } else { + /* Jump out of while(1) loop and go to next shell coding frame */ + break; + } + } + abs_pulses_ptr += SHELL_CODEC_FRAME_LENGTH; + } + + /********************/ + /* Rate level */ + /********************/ + /* find rate level that leads to fewest bits for coding of pulses per block info */ + minSumBits_Q6 = SKP_int32_MAX; + for( k = 0; k < N_RATE_LEVELS - 1; k++ ) { + nBits_ptr = SKP_Silk_pulses_per_block_BITS_Q6[ k ]; + sumBits_Q6 = SKP_Silk_rate_levels_BITS_Q6[sigtype][ k ]; + for( i = 0; i < iter; i++ ) { + if(nRshifts[ i ] > 0) { + sumBits_Q6 += nBits_ptr[MAX_PULSES+1]; + } else { + sumBits_Q6 += nBits_ptr[sum_pulses[ i ]]; + } + } + if( sumBits_Q6 < minSumBits_Q6 ) { + minSumBits_Q6 = sumBits_Q6; + RateLevelIndex = k; + } + } + SKP_Silk_range_encoder( psRC, RateLevelIndex, SKP_Silk_rate_levels_CDF[ sigtype ] ); + + /***************************************************/ + /* Sum-Weighted-Pulses Encoding */ + /***************************************************/ + cdf_ptr = SKP_Silk_pulses_per_block_CDF[ RateLevelIndex ]; + for( i = 0; i < iter; i++ ){ + if(nRshifts[ i ] == 0) { + SKP_Silk_range_encoder( psRC, sum_pulses[ i ], cdf_ptr ); + } else { + SKP_Silk_range_encoder( psRC, MAX_PULSES+1, cdf_ptr ); + for( k = 0; k < nRshifts[ i ] - 1; k++ ) { + SKP_Silk_range_encoder( psRC, MAX_PULSES+1, SKP_Silk_pulses_per_block_CDF[N_RATE_LEVELS-1] ); + } + + + + + + SKP_Silk_range_encoder( psRC, sum_pulses[ i ], SKP_Silk_pulses_per_block_CDF[N_RATE_LEVELS-1] ); + } + } + + /***************************************************/ + /* Shell Encoding */ + /***************************************************/ + for( i = 0; i < iter; i++ ) { + if( sum_pulses[ i ] > 0 ) { + SKP_Silk_shell_encoder(psRC, &abs_pulses[i * SHELL_CODEC_FRAME_LENGTH]); + } + } + + /***************************************************/ + /* LSB Encoding */ + /***************************************************/ + for( i = 0; i < iter; i++ ) { + if(nRshifts[ i ] > 0) { + pulses_ptr = &q[i * SHELL_CODEC_FRAME_LENGTH]; + nLS = nRshifts[ i ] - 1; + for( k = 0; k < SHELL_CODEC_FRAME_LENGTH; k++ ) { + abs_q = SKP_abs(pulses_ptr[ k ]); + for( j = nLS; j > 0; j-- ) { + bit = SKP_RSHIFT(abs_q, j) & 1; + SKP_Silk_range_encoder(psRC, bit, SKP_Silk_lsb_CDF); + } + bit = abs_q & 1; + SKP_Silk_range_encoder(psRC, bit, SKP_Silk_lsb_CDF); + } + } + } + + /****************************************/ + /* Encode signs */ + /****************************************/ + SKP_Silk_encode_signs( psRC, q, frame_length, sigtype, QuantOffsetType, RateLevelIndex); +} + + diff --git a/libs/silk/src/SKP_Silk_find_LPC_FIX.c b/libs/silk/src/SKP_Silk_find_LPC_FIX.c new file mode 100644 index 0000000000..944f3edf93 --- /dev/null +++ b/libs/silk/src/SKP_Silk_find_LPC_FIX.c @@ -0,0 +1,172 @@ + + +/*********************************************************************** + +Copyright (c) 2006-2010, Skype Limited. All rights reserved. +Redistribution and use in source and binary forms, with or without +modification, (subject to the limitations in the disclaimer below) +are permitted provided that the following conditions are met: + + + + + +- Redistributions of source code must retain the above copyright notice, +this list of conditions and the following disclaimer. +- Redistributions in binary form must reproduce the above copyright +notice, this list of conditions and the following disclaimer in the +documentation and/or other materials provided with the distribution. +- Neither the name of Skype Limited, nor the names of specific +contributors, may be used to endorse or promote products derived from +this software without specific prior written permission. +NO EXPRESS OR IMPLIED LICENSES TO ANY PARTY'S PATENT RIGHTS ARE GRANTED +BY THIS LICENSE.THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND +CONTRIBUTORS ''AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, +BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND +FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE +COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, +INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT +NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF +USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON +ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT +(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE +OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + +***********************************************************************/ + +#include "SKP_Silk_main_FIX.h" + +/* Finds LPC vector from correlations, and converts to NLSF */ +void SKP_Silk_find_LPC_FIX( + SKP_int NLSF_Q15[], /* O NLSFs */ + SKP_int *interpIndex, /* O NLSF interpolation index, only used for NLSF interpolation */ + const SKP_int prev_NLSFq_Q15[], /* I previous NLSFs, only used for NLSF interpolation */ + const SKP_int useInterpolatedNLSFs, /* I Flag */ + const SKP_int LPC_order, /* I LPC order */ + const SKP_int16 x[], /* I Input signal */ + const SKP_int subfr_length /* I Input signal subframe length including preceeding samples */ +) +{ + SKP_int k; + SKP_int32 a_Q16[ MAX_LPC_ORDER ]; + + SKP_int isInterpLower, shift; + SKP_int16 S[ MAX_LPC_ORDER ]; + SKP_int32 res_nrg0, res_nrg1; + SKP_int rshift0, rshift1; + + /* Used only for LSF interpolation */ + SKP_int32 a_tmp_Q16[ MAX_LPC_ORDER ], res_nrg_interp, res_nrg, res_tmp_nrg, res_nrg_2nd; + SKP_int res_nrg_interp_Q, res_nrg_Q, res_tmp_nrg_Q, res_nrg_2nd_Q; + SKP_int16 a_tmp_Q12[ MAX_LPC_ORDER ]; + + + + + + SKP_int NLSF0_Q15[ MAX_LPC_ORDER ]; + SKP_int16 LPC_res[ ( MAX_FRAME_LENGTH + NB_SUBFR * MAX_LPC_ORDER ) / 2 ]; + + /* Default: no interpolation */ + *interpIndex = 4; + + /* Burg AR analysis for the full frame */ + SKP_Silk_burg_modified( &res_nrg, &res_nrg_Q, a_Q16, x, subfr_length, NB_SUBFR, FIND_LPC_COND_FAC_Q32, LPC_order ); + + if( useInterpolatedNLSFs == 1 ) { + + /* Optimal solution for last 10 ms */ + SKP_Silk_burg_modified( &res_tmp_nrg, &res_tmp_nrg_Q, a_tmp_Q16, x + ( NB_SUBFR >> 1 ) * subfr_length, + subfr_length, ( NB_SUBFR >> 1 ), FIND_LPC_COND_FAC_Q32, LPC_order ); + + /* subtract residual energy here, as that's easier than adding it to the */ + /* residual energy of the first 10 ms in each iteration of the search below */ + shift = res_tmp_nrg_Q - res_nrg_Q; + if( shift >= 0 ) { + if( shift < 32 ) { + res_nrg = res_nrg - SKP_RSHIFT( res_tmp_nrg, shift ); + } + } else { + SKP_assert( shift > -32 ); + res_nrg = SKP_RSHIFT( res_nrg, -shift ) - res_tmp_nrg; + res_nrg_Q = res_tmp_nrg_Q; + } + + /* Convert to NLSFs */ + SKP_Silk_A2NLSF( NLSF_Q15, a_tmp_Q16, LPC_order ); + + /* Search over interpolation indices to find the one with lowest residual energy */ + res_nrg_2nd = SKP_int32_MAX; + for( k = 3; k >= 0; k-- ) { + /* Interpolate NLSFs for first half */ + SKP_Silk_interpolate( NLSF0_Q15, prev_NLSFq_Q15, NLSF_Q15, k, LPC_order ); + + /* Convert to LPC for residual energy evaluation */ + SKP_Silk_NLSF2A_stable( a_tmp_Q12, NLSF0_Q15, LPC_order ); + + /* Calculate residual energy with NLSF interpolation */ + SKP_memset( S, 0, LPC_order * sizeof( SKP_int16 ) ); + SKP_Silk_LPC_analysis_filter( x, a_tmp_Q12, S, LPC_res, 2 * subfr_length, LPC_order ); + + SKP_Silk_sum_sqr_shift( &res_nrg0, &rshift0, LPC_res + LPC_order, subfr_length - LPC_order ); + SKP_Silk_sum_sqr_shift( &res_nrg1, &rshift1, LPC_res + LPC_order + subfr_length, subfr_length - LPC_order ); + + /* Add subframe energies from first half frame */ + + + + + + shift = rshift0 - rshift1; + if( shift >= 0 ) { + res_nrg1 = SKP_RSHIFT( res_nrg1, shift ); + res_nrg_interp_Q = -rshift0; + } else { + res_nrg0 = SKP_RSHIFT( res_nrg0, -shift ); + res_nrg_interp_Q = -rshift1; + } + res_nrg_interp = SKP_ADD32( res_nrg0, res_nrg1 ); + + /* Compare with first half energy without NLSF interpolation, or best interpolated value so far */ + shift = res_nrg_interp_Q - res_nrg_Q; + if( shift >= 0 ) { + if( SKP_RSHIFT( res_nrg_interp, shift ) < res_nrg ) { + isInterpLower = SKP_TRUE; + } else { + isInterpLower = SKP_FALSE; + } + } else { + if( -shift < 32 ) { + if( res_nrg_interp < SKP_RSHIFT( res_nrg, -shift ) ) { + isInterpLower = SKP_TRUE; + } else { + isInterpLower = SKP_FALSE; + } + } else { + isInterpLower = SKP_FALSE; + } + } + + /* Determine whether current interpolated NLSFs are best so far */ + if( isInterpLower == SKP_TRUE ) { + /* Interpolation has lower residual energy */ + res_nrg = res_nrg_interp; + res_nrg_Q = res_nrg_interp_Q; + *interpIndex = k; + } + res_nrg_2nd = res_nrg_interp; + res_nrg_2nd_Q = res_nrg_interp_Q; + } + } + + if( *interpIndex == 4 ) { + /* NLSF interpolation is currently inactive, calculate NLSFs from full frame AR coefficients */ + SKP_Silk_A2NLSF( NLSF_Q15, a_Q16, LPC_order ); + } +} + + + + + + diff --git a/libs/silk/src/SKP_Silk_find_LTP_FIX.c b/libs/silk/src/SKP_Silk_find_LTP_FIX.c new file mode 100644 index 0000000000..9208b6f54f --- /dev/null +++ b/libs/silk/src/SKP_Silk_find_LTP_FIX.c @@ -0,0 +1,264 @@ + + +/*********************************************************************** + +Copyright (c) 2006-2010, Skype Limited. All rights reserved. +Redistribution and use in source and binary forms, with or without +modification, (subject to the limitations in the disclaimer below) +are permitted provided that the following conditions are met: +- Redistributions of source code must retain the above copyright notice, +this list of conditions and the following disclaimer. +- Redistributions in binary form must reproduce the above copyright +notice, this list of conditions and the following disclaimer in the +documentation and/or other materials provided with the distribution. +- Neither the name of Skype Limited, nor the names of specific +contributors, may be used to endorse or promote products derived from +this software without specific prior written permission. +NO EXPRESS OR IMPLIED LICENSES TO ANY PARTY'S PATENT RIGHTS ARE GRANTED +BY THIS LICENSE.THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND +CONTRIBUTORS ''AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, +BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND +FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE +COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, +INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT +NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF +USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON +ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT +(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE +OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + +***********************************************************************/ + +#include "SKP_Silk_main_FIX.h" + +void SKP_Silk_fit_LTP( + SKP_int32 LTP_coefs_Q16[ LTP_ORDER ], + SKP_int16 LTP_coefs_Q14[ LTP_ORDER ] +); + +void SKP_Silk_find_LTP_FIX( + SKP_int16 b_Q14[ NB_SUBFR * LTP_ORDER ], /* O LTP coefs */ + SKP_int32 WLTP[ NB_SUBFR * LTP_ORDER * LTP_ORDER ], /* O Weight for LTP quantization */ + SKP_int *LTPredCodGain_Q7, /* O LTP coding gain */ + const SKP_int16 r_first[], /* I residual signal after LPC signal + state for first 10 ms */ + const SKP_int16 r_last[], /* I residual signal after LPC signal + state for last 10 ms */ + const SKP_int lag[ NB_SUBFR ], /* I LTP lags */ + const SKP_int32 Wght_Q15[ NB_SUBFR ], /* I weights */ + const SKP_int subfr_length, /* I subframe length */ + + + + + + const SKP_int mem_offset, /* I number of samples in LTP memory */ + SKP_int corr_rshifts[ NB_SUBFR ] /* O right shifts applied to correlations */ +) +{ + SKP_int i, k, lshift; + const SKP_int16 *r_ptr, *lag_ptr; + SKP_int16 *b_Q14_ptr; + + SKP_int32 regu; + SKP_int32 *WLTP_ptr; + SKP_int32 b_Q16[ LTP_ORDER ], delta_b_Q14[ LTP_ORDER ], d_Q14[ NB_SUBFR ], nrg[ NB_SUBFR ], g_Q26; + SKP_int32 w[ NB_SUBFR ], WLTP_max, max_abs_d_Q14, max_w_bits; + + SKP_int32 temp32, denom32; + SKP_int extra_shifts; + SKP_int rr_shifts, maxRshifts, maxRshifts_wxtra, LZs; + SKP_int32 LPC_res_nrg, LPC_LTP_res_nrg, div_Q16; + SKP_int32 Rr[ LTP_ORDER ], rr[ NB_SUBFR ]; + SKP_int32 wd, m_Q12; + + b_Q14_ptr = b_Q14; + WLTP_ptr = WLTP; + r_ptr = &r_first[ mem_offset ]; + for( k = 0; k < NB_SUBFR; k++ ) { + if( k == ( NB_SUBFR >> 1 ) ) { /* shift residual for last 10 ms */ + r_ptr = &r_last[ mem_offset ]; + } + lag_ptr = r_ptr - ( lag[ k ] + LTP_ORDER / 2 ); + + SKP_Silk_sum_sqr_shift( &rr[ k ], &rr_shifts, r_ptr, subfr_length ); /* rr[ k ] in Q( -rr_shifts ) */ + /* Assure headroom */ + LZs = SKP_Silk_CLZ32( rr[k] ); + if( LZs < LTP_CORRS_HEAD_ROOM ) { + rr[ k ] = SKP_RSHIFT_ROUND( rr[ k ], LTP_CORRS_HEAD_ROOM - LZs ); + rr_shifts += (LTP_CORRS_HEAD_ROOM - LZs); + } + corr_rshifts[ k ] = rr_shifts; + SKP_Silk_corrMatrix_FIX( lag_ptr, subfr_length, LTP_ORDER, WLTP_ptr, &corr_rshifts[ k ] ); /* WLTP_fix_ptr in Q( -corr_rshifts[ k ] ) */ + /* The correlation vector always have lower max abs value than rr and/or RR so head room is assured */ + SKP_Silk_corrVector_FIX( lag_ptr, r_ptr, subfr_length, LTP_ORDER, Rr, corr_rshifts[ k ] ); /* Rr_fix_ptr in Q( -corr_rshifts[ k ] ) */ + if( corr_rshifts[ k ] > rr_shifts ) { + rr[ k ] = SKP_RSHIFT( rr[ k ], corr_rshifts[ k ] - rr_shifts ); /* rr[ k ] in Q( -corr_rshifts[ k ] ) */ + } + SKP_assert( rr[ k ] >= 0 ); + + regu = SKP_SMULWB( rr[ k ] + 1, LTP_DAMPING_Q16 ); + SKP_Silk_regularize_correlations_FIX( WLTP_ptr, &rr[k], regu, LTP_ORDER ); + + + + + + + SKP_Silk_solve_LDL_FIX( WLTP_ptr, LTP_ORDER, Rr, b_Q16 ); /* WLTP_fix_ptr and Rr_fix_ptr both in Q(-corr_rshifts[k]) */ + + /* Limit and store in Q14 */ + SKP_Silk_fit_LTP( b_Q16, b_Q14_ptr ); + + /* Calculate residual energy */ + nrg[ k ] = SKP_Silk_residual_energy16_covar_FIX( b_Q14_ptr, WLTP_ptr, Rr, rr[ k ], LTP_ORDER, 14 ); /* nrg_fix in Q( -corr_rshifts[ k ] ) */ + + /* temp = Wght[ k ] / ( nrg[ k ] * Wght[ k ] + 0.01f * subfr_length ); */ + extra_shifts = SKP_min_int( corr_rshifts[ k ], LTP_CORRS_HEAD_ROOM ); + denom32 = SKP_LSHIFT_SAT32( SKP_SMULWB( nrg[ k ], Wght_Q15[ k ] ), 1 + extra_shifts ) + /* Q( -corr_rshifts[ k ] + extra_shifts ) */ + SKP_RSHIFT( SKP_SMULWB( subfr_length, 655 ), corr_rshifts[ k ] - extra_shifts ); /* Q( -corr_rshifts[ k ] + extra_shifts ) */ + denom32 = SKP_max( denom32, 1 ); + SKP_assert( ((SKP_int64)Wght_Q15[ k ] << 16 ) < SKP_int32_MAX ); /* Wght always < 0.5 in Q0 */ + temp32 = SKP_DIV32( SKP_LSHIFT( (SKP_int32)Wght_Q15[ k ], 16 ), denom32 ); /* Q( 15 + 16 + corr_rshifts[k] - extra_shifts ) */ + temp32 = SKP_RSHIFT( temp32, 31 + corr_rshifts[ k ] - extra_shifts - 26 ); /* Q26 */ + + /* Limit temp such that the below scaling never wraps around */ + WLTP_max = 0; + for( i = 0; i < LTP_ORDER * LTP_ORDER; i++ ) { + WLTP_max = SKP_max( WLTP_ptr[ i ], WLTP_max ); + } + lshift = SKP_Silk_CLZ32( WLTP_max ) - 1 - 3; /* keep 3 bits free for vq_nearest_neighbor_fix */ + SKP_assert( 26 - 18 + lshift >= 0 ); + if( 26 - 18 + lshift < 31 ) { + temp32 = SKP_min_32( temp32, SKP_LSHIFT( (SKP_int32)1, 26 - 18 + lshift ) ); + } + + SKP_Silk_scale_vector32_Q26_lshift_18( WLTP_ptr, temp32, LTP_ORDER * LTP_ORDER ); /* WLTP_ptr in Q( 18 - corr_rshifts[ k ] ) */ + + w[ k ] = matrix_ptr( WLTP_ptr, ( LTP_ORDER >> 1 ), ( LTP_ORDER >> 1 ), LTP_ORDER ); /* w in Q( 18 - corr_rshifts[ k ] ) */ + SKP_assert( w[k] >= 0 ); + + r_ptr += subfr_length; + b_Q14_ptr += LTP_ORDER; + WLTP_ptr += LTP_ORDER * LTP_ORDER; + } + + maxRshifts = 0; + for( k = 0; k < NB_SUBFR; k++ ) { + maxRshifts = SKP_max_int( corr_rshifts[ k ], maxRshifts ); + } + + /* compute LTP coding gain */ + if( LTPredCodGain_Q7 != NULL ) { + LPC_LTP_res_nrg = 0; + LPC_res_nrg = 0; + SKP_assert( LTP_CORRS_HEAD_ROOM >= 2 ); /* Check that no overflow will happen when adding */ + + + + + + for( k = 0; k < NB_SUBFR; k++ ) { + LPC_res_nrg = SKP_ADD32( LPC_res_nrg, SKP_RSHIFT( SKP_ADD32( SKP_SMULWB( rr[ k ], Wght_Q15[ k ] ), 1 ), 1 + ( maxRshifts - corr_rshifts[ k ] ) ) ); /* Q( -maxRshifts ) */ + LPC_LTP_res_nrg = SKP_ADD32( LPC_LTP_res_nrg, SKP_RSHIFT( SKP_ADD32( SKP_SMULWB( nrg[ k ], Wght_Q15[ k ] ), 1 ), 1 + ( maxRshifts - corr_rshifts[ k ] ) ) ); /* Q( -maxRshifts ) */ + } + LPC_LTP_res_nrg = SKP_max( LPC_LTP_res_nrg, 1 ); /* avoid division by zero */ + + div_Q16 = SKP_DIV32_varQ( LPC_res_nrg, LPC_LTP_res_nrg, 16 ); + *LTPredCodGain_Q7 = (SKP_int)SKP_SMULBB( 3, SKP_Silk_lin2log( div_Q16 ) - ( 16 << 7 ) ); + + SKP_assert( *LTPredCodGain_Q7 == (SKP_int)SKP_SAT16( SKP_MUL( 3, SKP_Silk_lin2log( div_Q16 ) - ( 16 << 7 ) ) ) ); + } + + /* smoothing */ + /* d = sum( B, 1 ); */ + b_Q14_ptr = b_Q14; + for( k = 0; k < NB_SUBFR; k++ ) { + d_Q14[ k ] = 0; + for( i = 0; i < LTP_ORDER; i++ ) { + d_Q14[ k ] += b_Q14_ptr[ i ]; + } + b_Q14_ptr += LTP_ORDER; + } + + /* m = ( w * d' ) / ( sum( w ) + 1e-3 ); */ + + /* Find maximum absolute value of d_Q14 and the bits used by w in Q0 */ + max_abs_d_Q14 = 0; + max_w_bits = 0; + for( k = 0; k < NB_SUBFR; k++ ) { + max_abs_d_Q14 = SKP_max_32( max_abs_d_Q14, SKP_abs( d_Q14[ k ] ) ); + /* w[ k ] is in Q( 18 - corr_rshifts[ k ] ) */ + /* Find bits needed in Q( 18 - maxRshifts ) */ + max_w_bits = SKP_max_32( max_w_bits, 32 - SKP_Silk_CLZ32( w[ k ] ) + corr_rshifts[ k ] - maxRshifts ); + } + + /* max_abs_d_Q14 = (5 << 15); worst case, i.e. LTP_ORDER * -SKP_int16_MIN */ + SKP_assert( max_abs_d_Q14 <= ( 5 << 15 ) ); + + /* How many bits is needed for w*d' in Q( 18 - maxRshifts ) in the worst case, of all d_Q14's being equal to max_abs_d_Q14 */ + extra_shifts = max_w_bits + 32 - SKP_Silk_CLZ32( max_abs_d_Q14 ) - 14; + + /* Subtract what we got available; bits in output var plus maxRshifts */ + extra_shifts -= ( 32 - 1 - 2 + maxRshifts ); /* Keep sign bit free as well as 2 bits for accumulation */ + extra_shifts = SKP_max_int( extra_shifts, 0 ); + + maxRshifts_wxtra = maxRshifts + extra_shifts; + + temp32 = SKP_RSHIFT( 262, maxRshifts + extra_shifts ) + 1; /* 1e-3f in Q( 18 - (maxRshifts + extra_shifts) ) */ + + + + + + wd = 0; + for( k = 0; k < NB_SUBFR; k++ ) { + /* w has at least 2 bits of headroom so no overflow should happen */ + temp32 = SKP_ADD32( temp32, SKP_RSHIFT( w[ k ], maxRshifts_wxtra - corr_rshifts[ k ] ) ); /* Q( 18 - maxRshifts_wxtra ) */ + wd = SKP_ADD32( wd, SKP_LSHIFT( SKP_SMULWW( SKP_RSHIFT( w[ k ], maxRshifts_wxtra - corr_rshifts[ k ] ), d_Q14[ k ] ), 2 ) ); /* Q( 18 - maxRshifts_wxtra ) */ + } + m_Q12 = SKP_DIV32_varQ( wd, temp32, 12 ); + + b_Q14_ptr = b_Q14; + for( k = 0; k < NB_SUBFR; k++ ) { + /* w_fix[ k ] from Q( 18 - corr_rshifts[ k ] ) to Q( 16 ) */ + if( 2 - corr_rshifts[k] > 0 ) { + temp32 = SKP_RSHIFT( w[ k ], 2 - corr_rshifts[ k ] ); + } else { + temp32 = SKP_LSHIFT_SAT32( w[ k ], corr_rshifts[ k ] - 2 ); + } + + g_Q26 = SKP_MUL( + SKP_DIV32( + LTP_SMOOTHING_Q26, + SKP_RSHIFT( LTP_SMOOTHING_Q26, 10 ) + temp32 ), /* Q10 */ + SKP_LSHIFT_SAT32( SKP_SUB_SAT32( (SKP_int32)m_Q12, SKP_RSHIFT( d_Q14[ k ], 2 ) ), 4 ) ); /* Q16 */ + + temp32 = 0; + for( i = 0; i < LTP_ORDER; i++ ) { + delta_b_Q14[ i ] = SKP_max_16( b_Q14_ptr[ i ], 1638 ); /* 1638_Q14 = 0.1_Q0 */ + temp32 += delta_b_Q14[ i ]; /* Q14 */ + } + temp32 = SKP_DIV32( g_Q26, temp32 ); /* Q14->Q12 */ + for( i = 0; i < LTP_ORDER; i++ ) { + b_Q14_ptr[ i ] = SKP_LIMIT( (SKP_int32)b_Q14_ptr[ i ] + SKP_SMULWB( SKP_LSHIFT_SAT32( temp32, 4 ), delta_b_Q14[ i ] ), -16000, 28000 ); + } + b_Q14_ptr += LTP_ORDER; + } +} + +void SKP_Silk_fit_LTP( + SKP_int32 LTP_coefs_Q16[ LTP_ORDER ], + SKP_int16 LTP_coefs_Q14[ LTP_ORDER ] +) +{ + SKP_int i; + + for( i = 0; i < LTP_ORDER; i++ ) { + LTP_coefs_Q14[ i ] = (SKP_int16)SKP_SAT16( SKP_RSHIFT_ROUND( LTP_coefs_Q16[ i ], 2 ) ); + } +} + + + + + + diff --git a/libs/silk/src/SKP_Silk_find_pitch_lags_FIX.c b/libs/silk/src/SKP_Silk_find_pitch_lags_FIX.c new file mode 100644 index 0000000000..6185015923 --- /dev/null +++ b/libs/silk/src/SKP_Silk_find_pitch_lags_FIX.c @@ -0,0 +1,137 @@ + + +/*********************************************************************** + +Copyright (c) 2006-2010, Skype Limited. All rights reserved. +Redistribution and use in source and binary forms, with or without +modification, (subject to the limitations in the disclaimer below) +are permitted provided that the following conditions are met: +- Redistributions of source code must retain the above copyright notice, +this list of conditions and the following disclaimer. +- Redistributions in binary form must reproduce the above copyright +notice, this list of conditions and the following disclaimer in the +documentation and/or other materials provided with the distribution. +- Neither the name of Skype Limited, nor the names of specific +contributors, may be used to endorse or promote products derived from +this software without specific prior written permission. +NO EXPRESS OR IMPLIED LICENSES TO ANY PARTY'S PATENT RIGHTS ARE GRANTED +BY THIS LICENSE.THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND +CONTRIBUTORS ''AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, +BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND +FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE +COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, +INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT +NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF +USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON +ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT +(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE +OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + +***********************************************************************/ + +#include "SKP_Silk_main_FIX.h" + +/* Find pitch lags */ +void SKP_Silk_find_pitch_lags_FIX( + SKP_Silk_encoder_state_FIX *psEnc, /* I/O encoder state */ + SKP_Silk_encoder_control_FIX *psEncCtrl, /* I/O encoder control */ + SKP_int16 res[], /* O residual */ + const SKP_int16 x[] /* I Speech signal */ +) +{ + SKP_Silk_predict_state_FIX *psPredSt = &psEnc->sPred; + SKP_int buf_len, i; + SKP_int32 scale; + SKP_int32 thrhld_Q15; + const SKP_int16 *x_buf, *x_buf_ptr; + SKP_int16 Wsig[ FIND_PITCH_LPC_WIN_MAX ], *Wsig_ptr; + + + + + + SKP_int32 auto_corr[ FIND_PITCH_LPC_ORDER_MAX + 1 ]; + SKP_int16 rc_Q15[ FIND_PITCH_LPC_ORDER_MAX ]; + SKP_int32 A_Q24[ FIND_PITCH_LPC_ORDER_MAX ]; + SKP_int32 FiltState[ FIND_PITCH_LPC_ORDER_MAX ]; + SKP_int16 A_Q12[ FIND_PITCH_LPC_ORDER_MAX ]; + + /******************************************/ + /* Setup buffer lengths etc based of Fs. */ + /******************************************/ + buf_len = SKP_ADD_LSHIFT( psEnc->sCmn.la_pitch, psEnc->sCmn.frame_length, 1 ); + + /* Safty check */ + SKP_assert( buf_len >= psPredSt->pitch_LPC_win_length ); + + x_buf = x - psEnc->sCmn.frame_length; + + /*************************************/ + /* Estimate LPC AR coeficients */ + /*************************************/ + + /* Calculate windowed signal */ + + /* First LA_LTP samples */ + x_buf_ptr = x_buf + buf_len - psPredSt->pitch_LPC_win_length; + Wsig_ptr = Wsig; + SKP_Silk_apply_sine_window( Wsig_ptr, x_buf_ptr, 1, psEnc->sCmn.la_pitch ); + + /* Middle un - windowed samples */ + Wsig_ptr += psEnc->sCmn.la_pitch; + x_buf_ptr += psEnc->sCmn.la_pitch; + SKP_memcpy( Wsig_ptr, x_buf_ptr, ( psPredSt->pitch_LPC_win_length - SKP_LSHIFT( psEnc->sCmn.la_pitch, 1 ) ) * sizeof( SKP_int16 ) ); + + /* Last LA_LTP samples */ + Wsig_ptr += psPredSt->pitch_LPC_win_length - SKP_LSHIFT( psEnc->sCmn.la_pitch, 1 ); + x_buf_ptr += psPredSt->pitch_LPC_win_length - SKP_LSHIFT( psEnc->sCmn.la_pitch, 1 ); + SKP_Silk_apply_sine_window( Wsig_ptr, x_buf_ptr, 2, psEnc->sCmn.la_pitch ); + + /* Calculate autocorrelation sequence */ + SKP_Silk_autocorr( auto_corr, &scale, Wsig, psPredSt->pitch_LPC_win_length, psEnc->sCmn.pitchEstimationLPCOrder + 1 ); + + /* add white noise, as fraction of energy */ + auto_corr[ 0 ] = SKP_SMLAWB( auto_corr[ 0 ], auto_corr[ 0 ], FIND_PITCH_WHITE_NOISE_FRACTION_Q16 ); + + /* calculate the reflection coefficients using schur */ + SKP_Silk_schur( rc_Q15, auto_corr, psEnc->sCmn.pitchEstimationLPCOrder ); + + /* convert reflection coefficients to prediction coefficients */ + SKP_Silk_k2a( A_Q24, rc_Q15, psEnc->sCmn.pitchEstimationLPCOrder ); + + + + + + /* Convert From 32 bit Q24 to 16 bit Q12 coefs */ + for( i = 0; i < psEnc->sCmn.pitchEstimationLPCOrder; i++ ) { + A_Q12[ i ] = (SKP_int16)SKP_SAT16( SKP_RSHIFT( A_Q24[ i ], 12 ) ); + } + + /* Do BWE */ + SKP_Silk_bwexpander( A_Q12, psEnc->sCmn.pitchEstimationLPCOrder, FIND_PITCH_BANDWITH_EXPANSION_Q16 ); + + /*****************************************/ + /* LPC analysis filtering */ + /*****************************************/ + SKP_memset( FiltState, 0, psEnc->sCmn.pitchEstimationLPCOrder * sizeof( SKP_int16 ) ); + SKP_Silk_MA_Prediction( x_buf, A_Q12, FiltState, res, buf_len, psEnc->sCmn.pitchEstimationLPCOrder ); + SKP_memset( res, 0, psEnc->sCmn.pitchEstimationLPCOrder * sizeof( SKP_int16 ) ); + + /* Threshold for pitch estimator */ + thrhld_Q15 = ( 1 << 14 ); // 0.5f in Q15 + thrhld_Q15 = SKP_SMLABB( thrhld_Q15, -131, psEnc->sCmn.pitchEstimationLPCOrder ); + thrhld_Q15 = SKP_SMLABB( thrhld_Q15, -13, (SKP_int16)SKP_Silk_SQRT_APPROX( SKP_LSHIFT( (SKP_int32)psEnc->speech_activity_Q8, 8 ) ) ); + thrhld_Q15 = SKP_SMLABB( thrhld_Q15, 4587, psEnc->sCmn.prev_sigtype ); + thrhld_Q15 = SKP_MLA( thrhld_Q15, -31, SKP_RSHIFT( psEncCtrl->input_tilt_Q15, 8 ) ); + thrhld_Q15 = SKP_SAT16( thrhld_Q15 ); + + /*****************************************/ + /* Call Pitch estimator */ + /*****************************************/ + psEncCtrl->sCmn.sigtype = SKP_Silk_pitch_analysis_core( res, psEncCtrl->sCmn.pitchL, &psEncCtrl->sCmn.lagIndex, + &psEncCtrl->sCmn.contourIndex, &psEnc->LTPCorr_Q15, psEnc->sCmn.prevLag, psEnc->pitchEstimationThreshold_Q16, + (SKP_int16)thrhld_Q15, psEnc->sCmn.fs_kHz, psEnc->sCmn.pitchEstimationComplexity ); +} + + diff --git a/libs/silk/src/SKP_Silk_find_pred_coefs_FIX.c b/libs/silk/src/SKP_Silk_find_pred_coefs_FIX.c new file mode 100644 index 0000000000..4f533b4a3b --- /dev/null +++ b/libs/silk/src/SKP_Silk_find_pred_coefs_FIX.c @@ -0,0 +1,168 @@ + + +/*********************************************************************** + +Copyright (c) 2006-2010, Skype Limited. All rights reserved. +Redistribution and use in source and binary forms, with or without +modification, (subject to the limitations in the disclaimer below) +are permitted provided that the following conditions are met: +- Redistributions of source code must retain the above copyright notice, +this list of conditions and the following disclaimer. +- Redistributions in binary form must reproduce the above copyright +notice, this list of conditions and the following disclaimer in the +documentation and/or other materials provided with the distribution. +- Neither the name of Skype Limited, nor the names of specific +contributors, may be used to endorse or promote products derived from + + + + + +this software without specific prior written permission. +NO EXPRESS OR IMPLIED LICENSES TO ANY PARTY'S PATENT RIGHTS ARE GRANTED +BY THIS LICENSE.THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND +CONTRIBUTORS ''AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, +BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND +FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE +COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, +INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT +NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF +USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON +ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT +(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE +OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + +***********************************************************************/ + +#include "SKP_Silk_main_FIX.h" + + +#define VARQ 1 // EXPERIMENTAL +#define Qx 0 // EXPERIMENTAL + +void SKP_Silk_find_pred_coefs_FIX( + SKP_Silk_encoder_state_FIX *psEnc, /* I/O encoder state */ + SKP_Silk_encoder_control_FIX *psEncCtrl, /* I/O encoder control */ + const SKP_int16 res_pitch[] /* I Residual from pitch analysis */ +) +{ + SKP_int i; + SKP_int32 WLTP[ NB_SUBFR * LTP_ORDER * LTP_ORDER ]; + SKP_int32 invGains_Q16[ NB_SUBFR ], local_gains_Qx[ NB_SUBFR ], Wght_Q15[ NB_SUBFR ]; + SKP_int NLSF_Q15[ MAX_LPC_ORDER ]; + const SKP_int16 *x_ptr; + SKP_int16 *x_pre_ptr, LPC_in_pre[ NB_SUBFR * MAX_LPC_ORDER + MAX_FRAME_LENGTH ]; + + SKP_int32 tmp, min_gain_Q16; +#if !VARQ + SKP_int LZ; +#endif + SKP_int LTP_corrs_rshift[ NB_SUBFR ]; + + + /* weighting for weighted least squares */ + min_gain_Q16 = SKP_int32_MAX >> 6; + for( i = 0; i < NB_SUBFR; i++ ) { + min_gain_Q16 = SKP_min( min_gain_Q16, psEncCtrl->Gains_Q16[ i ] ); + } +#if !VARQ + + + + + + LZ = SKP_Silk_CLZ32( min_gain_Q16 ) - 1; + LZ = SKP_LIMIT( LZ, 0, 16 ); + min_gain_Q16 = SKP_RSHIFT( min_gain_Q16, 2 ); /* Ensure that maximum invGains_Q16 is within range of a 16 bit int */ +#endif + for( i = 0; i < NB_SUBFR; i++ ) { + /* Divide to Q16 */ + SKP_assert( psEncCtrl->Gains_Q16[ i ] > 0 ); +#if VARQ + /* Invert and normalize gains, and ensure that maximum invGains_Q16 is within range of a 16 bit int */ + invGains_Q16[ i ] = SKP_DIV32_varQ( min_gain_Q16, psEncCtrl->Gains_Q16[ i ], 16 - 2 ); +#else + invGains_Q16[ i ] = SKP_DIV32( SKP_LSHIFT( min_gain_Q16, LZ ), SKP_RSHIFT( psEncCtrl->Gains_Q16[ i ], 16 - LZ ) ); +#endif + + /* Ensure Wght_Q15 a minimum value 1 */ + invGains_Q16[ i ] = SKP_max( invGains_Q16[ i ], 363 ); + + /* Square the inverted gains */ + SKP_assert( invGains_Q16[ i ] == SKP_SAT16( invGains_Q16[ i ] ) ); + tmp = SKP_SMULWB( invGains_Q16[ i ], invGains_Q16[ i ] ); + Wght_Q15[ i ] = SKP_RSHIFT( tmp, 1 ); + + /* Invert the inverted and normalized gains */ + local_gains_Qx[ i ] = SKP_DIV32( ( 1 << ( 16 + Qx ) ), invGains_Q16[ i ] ); + } + + if( psEncCtrl->sCmn.sigtype == SIG_TYPE_VOICED ) { + /**********/ + /* VOICED */ + /**********/ + SKP_assert( psEnc->sCmn.frame_length - psEnc->sCmn.predictLPCOrder >= psEncCtrl->sCmn.pitchL[ 0 ] + LTP_ORDER / 2 ); + + /* LTP analysis */ + SKP_Silk_find_LTP_FIX( psEncCtrl->LTPCoef_Q14, WLTP, &psEncCtrl->LTPredCodGain_Q7, res_pitch, + res_pitch + SKP_RSHIFT( psEnc->sCmn.frame_length, 1 ), psEncCtrl->sCmn.pitchL, Wght_Q15, + psEnc->sCmn.subfr_length, psEnc->sCmn.frame_length, LTP_corrs_rshift ); + + + /* Quantize LTP gain parameters */ + SKP_Silk_quant_LTP_gains_FIX( psEncCtrl->LTPCoef_Q14, psEncCtrl->sCmn.LTPIndex, &psEncCtrl->sCmn.PERIndex, + WLTP, psEnc->mu_LTP_Q8, psEnc->sCmn.LTPQuantLowComplexity ); + + /* Control LTP scaling */ + SKP_Silk_LTP_scale_ctrl_FIX( psEnc, psEncCtrl ); + + /* Create LTP residual */ + SKP_Silk_LTP_analysis_filter_FIX( LPC_in_pre, psEnc->x_buf + psEnc->sCmn.frame_length - psEnc->sCmn.predictLPCOrder, + psEncCtrl->LTPCoef_Q14, psEncCtrl->sCmn.pitchL, invGains_Q16, 16, psEnc->sCmn.subfr_length, psEnc->sCmn.predictLPCOrder ); + + + + + + } else { + /************/ + /* UNVOICED */ + /************/ + /* Create signal with prepended subframes, scaled by inverse gains */ + x_ptr = psEnc->x_buf + psEnc->sCmn.frame_length - psEnc->sCmn.predictLPCOrder; + x_pre_ptr = LPC_in_pre; + for( i = 0; i < NB_SUBFR; i++ ) { + SKP_Silk_scale_copy_vector16( x_pre_ptr, x_ptr, invGains_Q16[ i ], + psEnc->sCmn.subfr_length + psEnc->sCmn.predictLPCOrder ); + x_pre_ptr += psEnc->sCmn.subfr_length + psEnc->sCmn.predictLPCOrder; + x_ptr += psEnc->sCmn.subfr_length; + } + + SKP_memset( psEncCtrl->LTPCoef_Q14, 0, NB_SUBFR * LTP_ORDER * sizeof( SKP_int16 ) ); + psEncCtrl->LTPredCodGain_Q7 = 0; + } + + /* LPC_in_pre contains the LTP-filtered input for voiced, and the unfiltered input for unvoiced */ + TIC(FIND_LPC) + SKP_Silk_find_LPC_FIX( NLSF_Q15, &psEncCtrl->sCmn.NLSFInterpCoef_Q2, psEnc->sPred.prev_NLSFq_Q15, + psEnc->sCmn.useInterpolatedNLSFs * ( 1 - psEnc->sCmn.first_frame_after_reset ), psEnc->sCmn.predictLPCOrder, + LPC_in_pre, psEnc->sCmn.subfr_length + psEnc->sCmn.predictLPCOrder ); + TOC(FIND_LPC) + + + /* Quantize LSFs */ + TIC(PROCESS_LSFS) + SKP_Silk_process_NLSFs_FIX( psEnc, psEncCtrl, NLSF_Q15 ); + TOC(PROCESS_LSFS) + + /* Calculate residual energy using quantized LPC coefficients */ + SKP_Silk_residual_energy_FIX( psEncCtrl->ResNrg, psEncCtrl->ResNrgQ, LPC_in_pre, psEncCtrl->PredCoef_Q12, local_gains_Qx, Qx, + psEnc->sCmn.subfr_length, psEnc->sCmn.predictLPCOrder ); + + /* Copy to prediction struct for use in next frame for fluctuation reduction */ + SKP_memcpy( psEnc->sPred.prev_NLSFq_Q15, NLSF_Q15, psEnc->sCmn.predictLPCOrder * sizeof( SKP_int ) ); + +} + + + diff --git a/libs/silk/src/SKP_Silk_gain_quant.c b/libs/silk/src/SKP_Silk_gain_quant.c new file mode 100644 index 0000000000..7aabfd866d --- /dev/null +++ b/libs/silk/src/SKP_Silk_gain_quant.c @@ -0,0 +1,110 @@ + + +/*********************************************************************** + +Copyright (c) 2006-2010, Skype Limited. All rights reserved. + + + + + +Redistribution and use in source and binary forms, with or without +modification, (subject to the limitations in the disclaimer below) +are permitted provided that the following conditions are met: +- Redistributions of source code must retain the above copyright notice, +this list of conditions and the following disclaimer. +- Redistributions in binary form must reproduce the above copyright +notice, this list of conditions and the following disclaimer in the +documentation and/or other materials provided with the distribution. +- Neither the name of Skype Limited, nor the names of specific +contributors, may be used to endorse or promote products derived from +this software without specific prior written permission. +NO EXPRESS OR IMPLIED LICENSES TO ANY PARTY'S PATENT RIGHTS ARE GRANTED +BY THIS LICENSE.THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND +CONTRIBUTORS ''AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, +BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND +FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE +COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, +INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT +NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF +USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON +ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT +(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE +OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + +***********************************************************************/ + +#include "SKP_Silk_main.h" + +#define OFFSET ( ( MIN_QGAIN_DB * 128 ) / 6 + 16 * 128 ) +#define SCALE_Q16 ( ( 65536 * ( N_LEVELS_QGAIN - 1 ) ) / ( ( ( MAX_QGAIN_DB - MIN_QGAIN_DB ) * 128 ) / 6 ) ) +#define INV_SCALE_Q16 ( ( 65536 * ( ( ( MAX_QGAIN_DB - MIN_QGAIN_DB ) * 128 ) / 6 ) ) / ( N_LEVELS_QGAIN - 1 ) ) + +/* Gain scalar quantization with hysteresis, uniform on log scale */ +void SKP_Silk_gains_quant( + SKP_int ind[ NB_SUBFR ], /* O gain indices */ + SKP_int32 gain_Q16[ NB_SUBFR ], /* I/O gains (quantized out) */ + SKP_int *prev_ind, /* I/O last index in previous frame */ + const SKP_int conditional /* I first gain is delta coded if 1 */ +) +{ + SKP_int k; + + for( k = 0; k < NB_SUBFR; k++ ) { + /* Add half of previous quantization error, convert to log scale, scale, floor() */ + ind[ k ] = SKP_SMULWB( SCALE_Q16, SKP_Silk_lin2log( gain_Q16[ k ] ) - OFFSET ); + + /* Round towards previous quantized gain (hysteresis) */ + if( ind[ k ] < *prev_ind ) { + + + + + + ind[ k ]++; + } + + /* Compute delta indices and limit */ + if( k == 0 && conditional == 0 ) { + /* Full index */ + ind[ k ] = SKP_LIMIT( ind[ k ], 0, N_LEVELS_QGAIN - 1 ); + ind[ k ] = SKP_max_int( ind[ k ], *prev_ind + MIN_DELTA_GAIN_QUANT ); + *prev_ind = ind[ k ]; + } else { + /* Delta index */ + ind[ k ] = SKP_LIMIT( ind[ k ] - *prev_ind, MIN_DELTA_GAIN_QUANT, MAX_DELTA_GAIN_QUANT ); + /* Accumulate deltas */ + *prev_ind += ind[ k ]; + /* Shift to make non-negative */ + ind[ k ] -= MIN_DELTA_GAIN_QUANT; + } + + /* Convert to linear scale and scale */ + gain_Q16[ k ] = SKP_Silk_log2lin( SKP_min_32( SKP_SMULWB( INV_SCALE_Q16, *prev_ind ) + OFFSET, 3967 ) ); /* 3967 = 31 in Q7 */ + } +} + +/* Gains scalar dequantization, uniform on log scale */ +void SKP_Silk_gains_dequant( + SKP_int32 gain_Q16[ NB_SUBFR ], /* O quantized gains */ + const SKP_int ind[ NB_SUBFR ], /* I gain indices */ + SKP_int *prev_ind, /* I/O last index in previous frame */ + const SKP_int conditional /* I first gain is delta coded if 1 */ +) +{ + SKP_int k; + + for( k = 0; k < NB_SUBFR; k++ ) { + if( k == 0 && conditional == 0 ) { + *prev_ind = ind[ k ]; + } else { + /* Delta index */ + *prev_ind += ind[ k ] + MIN_DELTA_GAIN_QUANT; + } + + /* Convert to linear scale and scale */ + gain_Q16[ k ] = SKP_Silk_log2lin( SKP_min_32( SKP_SMULWB( INV_SCALE_Q16, *prev_ind ) + OFFSET, 3967 ) ); /* 3967 = 31 in Q7 */ + } +} + + diff --git a/libs/silk/src/SKP_Silk_init_encoder_FIX.c b/libs/silk/src/SKP_Silk_init_encoder_FIX.c new file mode 100644 index 0000000000..9b4d904953 --- /dev/null +++ b/libs/silk/src/SKP_Silk_init_encoder_FIX.c @@ -0,0 +1,75 @@ + + +/*********************************************************************** + +Copyright (c) 2006-2010, Skype Limited. All rights reserved. +Redistribution and use in source and binary forms, with or without +modification, (subject to the limitations in the disclaimer below) +are permitted provided that the following conditions are met: +- Redistributions of source code must retain the above copyright notice, +this list of conditions and the following disclaimer. +- Redistributions in binary form must reproduce the above copyright +notice, this list of conditions and the following disclaimer in the +documentation and/or other materials provided with the distribution. +- Neither the name of Skype Limited, nor the names of specific +contributors, may be used to endorse or promote products derived from +this software without specific prior written permission. +NO EXPRESS OR IMPLIED LICENSES TO ANY PARTY'S PATENT RIGHTS ARE GRANTED +BY THIS LICENSE.THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND +CONTRIBUTORS ''AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, +BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND +FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE +COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, +INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT + + + + + +NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF +USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON +ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT +(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE +OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + +***********************************************************************/ + +#include "SKP_Silk_main_FIX.h" + +/*********************************/ +/* Initialize Silk Encoder state */ +/*********************************/ +SKP_int SKP_Silk_init_encoder_FIX( + SKP_Silk_encoder_state_FIX *psEnc /* I/O Pointer to Silk encoder state */ +) +{ + SKP_int ret = 0; + /* Clear the entire encoder state */ + SKP_memset( psEnc, 0, sizeof( SKP_Silk_encoder_state_FIX ) ); + + /* Initialize to 24 kHz sampling, 20 ms packets, 25 kbps, 0% packet loss, and init non-zero values */ + ret = SKP_Silk_control_encoder_FIX( psEnc, 24, 20, 25, 0, 0, 0, 10, 1 ); + +#if HIGH_PASS_INPUT + psEnc->variable_HP_smth1_Q15 = 200844; /* = SKP_Silk_log2(70)_Q0; */ + psEnc->variable_HP_smth2_Q15 = 200844; /* = SKP_Silk_log2(70)_Q0; */ +#endif + + /* Used to deactivate e.g. LSF interpolation and fluctuation reduction */ + psEnc->sCmn.first_frame_after_reset = 1; + psEnc->sCmn.fs_kHz_changed = 0; + psEnc->sCmn.LBRR_enabled = 0; + + /* Initialize Silk VAD */ + ret += SKP_Silk_VAD_Init( &psEnc->sCmn.sVAD ); + + /* Initialize NSQ */ + psEnc->sNSQ.prev_inv_gain_Q16 = 65536; /* 1.0 in Q16 */ + psEnc->sNSQ_LBRR.prev_inv_gain_Q16 = 65536; /* 1.0 in Q16 */ + + psEnc->sCmn.bitstream_v = USE_BIT_STREAM_V; + + return( ret ); +} + + diff --git a/libs/silk/src/SKP_Silk_inner_prod_aligned.c b/libs/silk/src/SKP_Silk_inner_prod_aligned.c new file mode 100644 index 0000000000..1288298641 --- /dev/null +++ b/libs/silk/src/SKP_Silk_inner_prod_aligned.c @@ -0,0 +1,116 @@ + + +/*********************************************************************** + +Copyright (c) 2006-2010, Skype Limited. All rights reserved. + + + + + +Redistribution and use in source and binary forms, with or without +modification, (subject to the limitations in the disclaimer below) +are permitted provided that the following conditions are met: +- Redistributions of source code must retain the above copyright notice, +this list of conditions and the following disclaimer. +- Redistributions in binary form must reproduce the above copyright +notice, this list of conditions and the following disclaimer in the +documentation and/or other materials provided with the distribution. +- Neither the name of Skype Limited, nor the names of specific +contributors, may be used to endorse or promote products derived from +this software without specific prior written permission. +NO EXPRESS OR IMPLIED LICENSES TO ANY PARTY'S PATENT RIGHTS ARE GRANTED +BY THIS LICENSE.THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND +CONTRIBUTORS ''AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, +BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND +FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE +COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, +INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT +NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF +USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON +ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT +(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE +OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + +***********************************************************************/ + +/* * + * SKP_Silk_inner_prod_aligned.c * + * * + * * + * Copyright 2008 (c), Skype Limited * + * Date: 080601 * + * */ +#include "SKP_Silk_SigProc_FIX.h" + +/* sum= for(i=0;i6, memory access can be reduced by half. */ + +SKP_int32 SKP_Silk_inner_prod_aligned( + const SKP_int16* const inVec1, /* I input vector 1 */ + const SKP_int16* const inVec2, /* I input vector 2 */ + const SKP_int len /* I vector lengths */ +) +{ + SKP_int i; + + + + + + SKP_int32 sum = 0; + for( i = 0; i < len; i++ ) { + sum = SKP_SMLABB( sum, inVec1[ i ], inVec2[ i ] ); + } + return sum; +} + +SKP_int64 SKP_Silk_inner_prod_aligned_64( + const SKP_int32 *inVec1, /* I input vector 1 */ + const SKP_int32 *inVec2, /* I input vector 2 */ + const SKP_int len /* I vector lengths */ +) +{ + SKP_int i; + SKP_int64 sum = 0; + for( i = 0; i < len; i++ ) { + sum = SKP_SMLAL( sum, inVec1[ i ], inVec2[ i ] ); + } + return sum; +} +SKP_int64 SKP_Silk_inner_prod16_aligned_64( + const SKP_int16 *inVec1, /* I input vector 1 */ + const SKP_int16 *inVec2, /* I input vector 2 */ + const SKP_int len /* I vector lengths */ +) +{ + SKP_int i; + SKP_int64 sum = 0; + for( i = 0; i < len; i++ ) { + sum = SKP_SMLALBB( sum, inVec1[ i ], inVec2[ i ] ); + } + return sum; +} + +SKP_int32 SKP_Silk_inner_prod16_aligned_sat( + const SKP_int16* const inVec1, /* I input vector 1 */ + const SKP_int16* const inVec2, /* I input vector 2 */ + const SKP_int len /* I vector lengths */ +) +{ + SKP_int i; + SKP_int32 sum = 0; + for( i = 0; i < len; i++ ) { + sum = SKP_ADD_SAT32( sum, SKP_SMULBB( inVec1[ i ], inVec2[ i ] ) ); + } + return sum; +} + + + + + + diff --git a/libs/silk/src/SKP_Silk_interpolate.c b/libs/silk/src/SKP_Silk_interpolate.c new file mode 100644 index 0000000000..20eb2feee3 --- /dev/null +++ b/libs/silk/src/SKP_Silk_interpolate.c @@ -0,0 +1,58 @@ + + +/*********************************************************************** + +Copyright (c) 2006-2010, Skype Limited. All rights reserved. +Redistribution and use in source and binary forms, with or without +modification, (subject to the limitations in the disclaimer below) +are permitted provided that the following conditions are met: +- Redistributions of source code must retain the above copyright notice, +this list of conditions and the following disclaimer. +- Redistributions in binary form must reproduce the above copyright +notice, this list of conditions and the following disclaimer in the +documentation and/or other materials provided with the distribution. +- Neither the name of Skype Limited, nor the names of specific +contributors, may be used to endorse or promote products derived from +this software without specific prior written permission. +NO EXPRESS OR IMPLIED LICENSES TO ANY PARTY'S PATENT RIGHTS ARE GRANTED +BY THIS LICENSE.THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND +CONTRIBUTORS ''AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, +BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND +FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE +COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, +INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT +NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF +USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON +ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT +(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE +OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + +***********************************************************************/ + +#include "SKP_Silk_main.h" + +/* Interpolate two vectors */ +void SKP_Silk_interpolate( + SKP_int xi[ MAX_LPC_ORDER ], /* O interpolated vector */ + const SKP_int x0[ MAX_LPC_ORDER ], /* I first vector */ + const SKP_int x1[ MAX_LPC_ORDER ], /* I second vector */ + const SKP_int ifact_Q2, /* I interp. factor, weight on 2nd vector */ + const SKP_int d /* I number of parameters */ +) +{ + SKP_int i; + + SKP_assert( ifact_Q2 >= 0 ); + SKP_assert( ifact_Q2 <= ( 1 << 2 ) ); + + + + + + + for( i = 0; i < d; i++ ) { + xi[ i ] = (SKP_int)( (SKP_int32)x0[ i ] + SKP_RSHIFT( SKP_MUL( (SKP_int32)x1[ i ] - (SKP_int32)x0[ i ], ifact_Q2 ), 2 ) ); + } +} + + diff --git a/libs/silk/src/SKP_Silk_k2a.c b/libs/silk/src/SKP_Silk_k2a.c new file mode 100644 index 0000000000..75a35a5137 --- /dev/null +++ b/libs/silk/src/SKP_Silk_k2a.c @@ -0,0 +1,68 @@ + + +/*********************************************************************** + +Copyright (c) 2006-2010, Skype Limited. All rights reserved. +Redistribution and use in source and binary forms, with or without +modification, (subject to the limitations in the disclaimer below) +are permitted provided that the following conditions are met: +- Redistributions of source code must retain the above copyright notice, +this list of conditions and the following disclaimer. +- Redistributions in binary form must reproduce the above copyright +notice, this list of conditions and the following disclaimer in the +documentation and/or other materials provided with the distribution. +- Neither the name of Skype Limited, nor the names of specific +contributors, may be used to endorse or promote products derived from +this software without specific prior written permission. +NO EXPRESS OR IMPLIED LICENSES TO ANY PARTY'S PATENT RIGHTS ARE GRANTED +BY THIS LICENSE.THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND +CONTRIBUTORS ''AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, +BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND +FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE +COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, +INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT +NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF +USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON +ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT +(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE +OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + +***********************************************************************/ + +/* * + * SKP_Silk_k2a.c * + * * + * Step up function, converts reflection coefficients to prediction * + * coefficients * + * * + * Copyright 2008 (c), Skype Limited * + * Date: 080103 * + * */ +#include "SKP_Silk_SigProc_FIX.h" + + + + + +/* Step up function, converts reflection coefficients to prediction coefficients */ +void SKP_Silk_k2a( + SKP_int32 *A_Q24, /* O: Prediction coefficients [order] Q24 */ + const SKP_int16 *rc_Q15, /* I: Reflection coefficients [order] Q15 */ + const SKP_int32 order /* I: Prediction order */ +) +{ + SKP_int k, n; + SKP_int32 Atmp[ SigProc_MAX_ORDER_LPC ]; + + for( k = 0; k < order; k++ ) { + for( n = 0; n < k; n++ ) { + Atmp[ n ] = A_Q24[ n ]; + } + for( n = 0; n < k; n++ ) { + A_Q24[ n ] = SKP_SMLAWB( A_Q24[ n ], SKP_LSHIFT( Atmp[ k - n - 1 ], 1 ), rc_Q15[ k ] ); + } + A_Q24[ k ] = -SKP_LSHIFT( (SKP_int32)rc_Q15[ k ], 9 ); + } +} + + diff --git a/libs/silk/src/SKP_Silk_k2a_Q16.c b/libs/silk/src/SKP_Silk_k2a_Q16.c new file mode 100644 index 0000000000..38459edcf1 --- /dev/null +++ b/libs/silk/src/SKP_Silk_k2a_Q16.c @@ -0,0 +1,83 @@ + + +/*********************************************************************** + +Copyright (c) 2006-2010, Skype Limited. All rights reserved. +Redistribution and use in source and binary forms, with or without +modification, (subject to the limitations in the disclaimer below) +are permitted provided that the following conditions are met: +- Redistributions of source code must retain the above copyright notice, +this list of conditions and the following disclaimer. +- Redistributions in binary form must reproduce the above copyright +notice, this list of conditions and the following disclaimer in the +documentation and/or other materials provided with the distribution. +- Neither the name of Skype Limited, nor the names of specific +contributors, may be used to endorse or promote products derived from +this software without specific prior written permission. +NO EXPRESS OR IMPLIED LICENSES TO ANY PARTY'S PATENT RIGHTS ARE GRANTED +BY THIS LICENSE.THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND +CONTRIBUTORS ''AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, +BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND +FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE +COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, +INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT +NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF +USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON + + + + + +ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT +(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE +OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + +***********************************************************************/ + +/* * + * SKP_Silk_k2a.c * + * * + * Step up function, converts reflection coefficients to prediction * + * coefficients * + * * + * Copyright 2008 (c), Skype Limited * + * Date: 080103 * + * */ +#include "SKP_Silk_SigProc_FIX.h" + +/* Step up function, converts reflection coefficients to prediction coefficients */ +void SKP_Silk_k2a_Q16( + SKP_int32 *A_Q24, /* O: Prediction coefficients [order] Q24 */ + const SKP_int32 *rc_Q16, /* I: Reflection coefficients [order] Q16 */ + const SKP_int32 order /* I: Prediction order */ +) +{ + SKP_int k, n; + SKP_int32 Atmp[ SigProc_MAX_ORDER_LPC ]; + + for( k = 0; k < order; k++ ) { + for( n = 0; n < k; n++ ) { + Atmp[ n ] = A_Q24[ n ]; + } + for( n = 0; n < k; n++ ) { + A_Q24[ n ] = SKP_SMLAWW( A_Q24[ n ], Atmp[ k - n - 1 ], rc_Q16[ k ] ); + } + A_Q24[ k ] = -SKP_LSHIFT( rc_Q16[ k ], 8 ); + } +} + + + + + + + + + + + + + + + + diff --git a/libs/silk/src/SKP_Silk_lin2log.c b/libs/silk/src/SKP_Silk_lin2log.c new file mode 100644 index 0000000000..d5c4bf9bf5 --- /dev/null +++ b/libs/silk/src/SKP_Silk_lin2log.c @@ -0,0 +1,63 @@ + + + + + +/*********************************************************************** + +Copyright (c) 2006-2010, Skype Limited. All rights reserved. +Redistribution and use in source and binary forms, with or without +modification, (subject to the limitations in the disclaimer below) +are permitted provided that the following conditions are met: +- Redistributions of source code must retain the above copyright notice, +this list of conditions and the following disclaimer. +- Redistributions in binary form must reproduce the above copyright +notice, this list of conditions and the following disclaimer in the +documentation and/or other materials provided with the distribution. +- Neither the name of Skype Limited, nor the names of specific +contributors, may be used to endorse or promote products derived from +this software without specific prior written permission. +NO EXPRESS OR IMPLIED LICENSES TO ANY PARTY'S PATENT RIGHTS ARE GRANTED +BY THIS LICENSE.THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND +CONTRIBUTORS ''AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, +BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND +FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE +COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, +INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT +NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF +USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON +ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT +(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE +OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + +***********************************************************************/ + +/* * + * SKP_Silk_lin2log.c * + * * + * Convert input to a log scale * + * Approximation of 128 * log2() * + * * + * Copyright 2006 (c), Skype Limited * + * Date: 060221 * + * */ +#include "SKP_Silk_SigProc_FIX.h" +/* Approximation of 128 * log2() (very close inverse of approx 2^() below) */ +/* Convert input to a log scale */ +SKP_int32 SKP_Silk_lin2log( const SKP_int32 inLin ) /* I: Input in linear scale */ +{ + SKP_int32 lz, frac_Q7; + + SKP_Silk_CLZ_FRAC( inLin, &lz, &frac_Q7 ); + + /* Piece-wise parabolic approximation */ + + + + + + return( SKP_LSHIFT( 31 - lz, 7 ) + SKP_SMLAWB( frac_Q7, SKP_MUL( frac_Q7, 128 - frac_Q7 ), 179 ) ); +} + + + diff --git a/libs/silk/src/SKP_Silk_log2lin.c b/libs/silk/src/SKP_Silk_log2lin.c new file mode 100644 index 0000000000..10c64a0131 --- /dev/null +++ b/libs/silk/src/SKP_Silk_log2lin.c @@ -0,0 +1,69 @@ + + +/*********************************************************************** + +Copyright (c) 2006-2010, Skype Limited. All rights reserved. +Redistribution and use in source and binary forms, with or without +modification, (subject to the limitations in the disclaimer below) +are permitted provided that the following conditions are met: +- Redistributions of source code must retain the above copyright notice, +this list of conditions and the following disclaimer. +- Redistributions in binary form must reproduce the above copyright +notice, this list of conditions and the following disclaimer in the +documentation and/or other materials provided with the distribution. +- Neither the name of Skype Limited, nor the names of specific +contributors, may be used to endorse or promote products derived from +this software without specific prior written permission. +NO EXPRESS OR IMPLIED LICENSES TO ANY PARTY'S PATENT RIGHTS ARE GRANTED +BY THIS LICENSE.THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND +CONTRIBUTORS ''AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, +BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND +FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE +COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, +INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT +NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF +USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON +ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT +(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE +OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + +***********************************************************************/ + +/* * + * SKP_Silk_log2lin.c * + * * + * Convert input to a linear scale * + * * + * Copyright 2006 (c), Skype Limited * + * Date: 060221 * + * */ +#include "SKP_Silk_SigProc_FIX.h" + +/* Approximation of 2^() (very close inverse of SKP_Silk_lin2log()) */ + + + + + +/* Convert input to a linear scale */ +SKP_int32 SKP_Silk_log2lin( const SKP_int32 inLog_Q7 ) /* I: Input on log scale */ +{ + SKP_int32 out, frac_Q7; + + if( inLog_Q7 < 0 ) { + return 0; + } + + out = SKP_LSHIFT( 1, SKP_RSHIFT( inLog_Q7, 7 ) ); + frac_Q7 = inLog_Q7 & 0x7F; + if( inLog_Q7 < 2048 ) { + /* Piece-wise parabolic approximation */ + out = SKP_ADD_RSHIFT( out, SKP_MUL( out, SKP_SMLAWB( frac_Q7, SKP_MUL( frac_Q7, 128 - frac_Q7 ), -174 ) ), 7 ); + } else { + /* Piece-wise parabolic approximation */ + out = SKP_MLA( out, SKP_RSHIFT( out, 7 ), SKP_SMLAWB( frac_Q7, SKP_MUL( frac_Q7, 128 - frac_Q7 ), -174 ) ); + } + return out; +} + + diff --git a/libs/silk/src/SKP_Silk_lowpass_int.c b/libs/silk/src/SKP_Silk_lowpass_int.c new file mode 100644 index 0000000000..dacb12aad1 --- /dev/null +++ b/libs/silk/src/SKP_Silk_lowpass_int.c @@ -0,0 +1,72 @@ + + +/*********************************************************************** + +Copyright (c) 2006-2010, Skype Limited. All rights reserved. +Redistribution and use in source and binary forms, with or without +modification, (subject to the limitations in the disclaimer below) +are permitted provided that the following conditions are met: +- Redistributions of source code must retain the above copyright notice, +this list of conditions and the following disclaimer. +- Redistributions in binary form must reproduce the above copyright +notice, this list of conditions and the following disclaimer in the +documentation and/or other materials provided with the distribution. +- Neither the name of Skype Limited, nor the names of specific +contributors, may be used to endorse or promote products derived from +this software without specific prior written permission. +NO EXPRESS OR IMPLIED LICENSES TO ANY PARTY'S PATENT RIGHTS ARE GRANTED +BY THIS LICENSE.THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND +CONTRIBUTORS ''AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, +BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND +FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE +COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, +INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT +NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF +USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON + + + + + +ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT +(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE +OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + +***********************************************************************/ + +/* * + * SKP_Silk_lowpass_int.c * + * * + * First order low-pass filter, with input as SKP_int32, running at * + * 48 kHz * + * * + * Copyright 2006 (c), Skype Limited * + * Date: 060221 * + * */ +#include "SKP_Silk_SigProc_FIX.h" + +/* First order low-pass filter, with input as SKP_int32, running at 48 kHz */ +void SKP_Silk_lowpass_int( + const SKP_int32 *in, /* I: Q25 48 kHz signal; length = len */ + SKP_int32 *S, /* I/O: Q25 state; length = 1 */ + SKP_int32 *out, /* O: Q25 48 kHz signal; length = len */ + const SKP_int32 len /* I: Number of samples */ +) +{ + SKP_int k; + SKP_int32 in_tmp, out_tmp, state; + + state = S[ 0 ]; + for( k = len; k > 0; k-- ) { + in_tmp = *in++; + in_tmp -= SKP_RSHIFT( in_tmp, 2 ); /* multiply by 0.75 */ + out_tmp = state + in_tmp; /* zero at nyquist */ + state = in_tmp - SKP_RSHIFT( out_tmp, 1 ); /* pole */ + *out++ = out_tmp; + } + S[ 0 ] = state; +} + + + + diff --git a/libs/silk/src/SKP_Silk_lowpass_short.c b/libs/silk/src/SKP_Silk_lowpass_short.c new file mode 100644 index 0000000000..ab07fbf4e1 --- /dev/null +++ b/libs/silk/src/SKP_Silk_lowpass_short.c @@ -0,0 +1,76 @@ + + +/*********************************************************************** + +Copyright (c) 2006-2010, Skype Limited. All rights reserved. + + + + + +Redistribution and use in source and binary forms, with or without +modification, (subject to the limitations in the disclaimer below) +are permitted provided that the following conditions are met: +- Redistributions of source code must retain the above copyright notice, +this list of conditions and the following disclaimer. +- Redistributions in binary form must reproduce the above copyright +notice, this list of conditions and the following disclaimer in the +documentation and/or other materials provided with the distribution. +- Neither the name of Skype Limited, nor the names of specific +contributors, may be used to endorse or promote products derived from +this software without specific prior written permission. +NO EXPRESS OR IMPLIED LICENSES TO ANY PARTY'S PATENT RIGHTS ARE GRANTED +BY THIS LICENSE.THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND +CONTRIBUTORS ''AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, +BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND +FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE +COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, +INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT +NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF +USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON +ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT +(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE +OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + +***********************************************************************/ + +/* * + * SKP_Silk_lowpass_short.c * + * * + * First order low-pass filter, with input as SKP_int16, running at * + * 48 kHz * + * * + * Copyright 2006 (c), Skype Limited * + * Date: 060221 * + * */ +#include "SKP_Silk_SigProc_FIX.h" + + +/* First order low-pass filter, with input as SKP_int16, running at 48 kHz */ +void SKP_Silk_lowpass_short( + const SKP_int16 *in, /* I: Q15 48 kHz signal; [len] */ + SKP_int32 *S, /* I/O: Q25 state; length = 1 */ + SKP_int32 *out, /* O: Q25 48 kHz signal; [len] */ + const SKP_int32 len /* O: Signal length */ +) +{ + SKP_int k; + SKP_int32 in_tmp, out_tmp, state; + + + + + + state = S[ 0 ]; + for( k = 0; k < len; k++ ) { + in_tmp = SKP_MUL( 768, (SKP_int32)in[k] ); /* multiply by 0.75, going from Q15 to Q25 */ + out_tmp = state + in_tmp; /* zero at nyquist */ + state = in_tmp - SKP_RSHIFT( out_tmp, 1 ); /* pole */ + out[ k ] = out_tmp; + } + S[ 0 ] = state; +} + + + + diff --git a/libs/silk/src/SKP_Silk_macros.h b/libs/silk/src/SKP_Silk_macros.h new file mode 100644 index 0000000000..c875109366 --- /dev/null +++ b/libs/silk/src/SKP_Silk_macros.h @@ -0,0 +1,143 @@ + + +/*********************************************************************** + +Copyright (c) 2006-2010, Skype Limited. All rights reserved. +Redistribution and use in source and binary forms, with or without +modification, (subject to the limitations in the disclaimer below) +are permitted provided that the following conditions are met: +- Redistributions of source code must retain the above copyright notice, + + + + + +this list of conditions and the following disclaimer. +- Redistributions in binary form must reproduce the above copyright +notice, this list of conditions and the following disclaimer in the +documentation and/or other materials provided with the distribution. +- Neither the name of Skype Limited, nor the names of specific +contributors, may be used to endorse or promote products derived from +this software without specific prior written permission. +NO EXPRESS OR IMPLIED LICENSES TO ANY PARTY'S PATENT RIGHTS ARE GRANTED +BY THIS LICENSE.THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND +CONTRIBUTORS ''AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, +BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND +FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE +COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, +INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT +NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF +USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON +ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT +(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE +OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + +***********************************************************************/ + +#ifndef _SKP_SILK_API_C_H_ +#define _SKP_SILK_API_C_H_ + +// This is an inline header file for general platform. + +// (a32 * (SKP_int32)((SKP_int16)(b32))) >> 16 output have to be 32bit int +#define SKP_SMULWB(a32, b32) ((((a32) >> 16) * (SKP_int32)((SKP_int16)(b32))) + ((((a32) & 0x0000FFFF) * (SKP_int32)((SKP_int16)(b32))) >> 16)) + +// a32 + (b32 * (SKP_int32)((SKP_int16)(c32))) >> 16 output have to be 32bit int +#define SKP_SMLAWB(a32, b32, c32) ((a32) + ((((b32) >> 16) * (SKP_int32)((SKP_int16)(c32))) + ((((b32) & 0x0000FFFF) * (SKP_int32)((SKP_int16)(c32))) >> 16))) + +// (a32 * (b32 >> 16)) >> 16 +#define SKP_SMULWT(a32, b32) (((a32) >> 16) * ((b32) >> 16) + ((((a32) & 0x0000FFFF) * ((b32) >> 16)) >> 16)) + +// a32 + (b32 * (c32 >> 16)) >> 16 +#define SKP_SMLAWT(a32, b32, c32) ((a32) + (((b32) >> 16) * ((c32) >> 16)) + ((((b32) & 0x0000FFFF) * ((c32) >> 16)) >> 16)) + +// (SKP_int32)((SKP_int16)(a3))) * (SKP_int32)((SKP_int16)(b32)) output have to be 32bit int +#define SKP_SMULBB(a32, b32) ((SKP_int32)((SKP_int16)(a32)) * (SKP_int32)((SKP_int16)(b32))) + +// a32 + (SKP_int32)((SKP_int16)(b32)) * (SKP_int32)((SKP_int16)(c32)) output have to be 32bit int +#define SKP_SMLABB(a32, b32, c32) ((a32) + ((SKP_int32)((SKP_int16)(b32))) * (SKP_int32)((SKP_int16)(c32))) + +// (SKP_int32)((SKP_int16)(a32)) * (b32 >> 16) +#define SKP_SMULBT(a32, b32) ((SKP_int32)((SKP_int16)(a32)) * ((b32) >> 16)) + + + + + + +// a32 + (SKP_int32)((SKP_int16)(b32)) * (c32 >> 16) +#define SKP_SMLABT(a32, b32, c32) ((a32) + ((SKP_int32)((SKP_int16)(b32))) * ((c32) >> 16)) + +// a64 + (b32 * c32) +#define SKP_SMLAL(a64, b32, c32) (SKP_ADD64((a64), ((SKP_int64)(b32) * (SKP_int64)(c32)))) + +// (a32 * b32) >> 16 +#define SKP_SMULWW(a32, b32) SKP_MLA(SKP_SMULWB((a32), (b32)), (a32), SKP_RSHIFT_ROUND((b32), 16)) + +// a32 + ((b32 * c32) >> 16) +#define SKP_SMLAWW(a32, b32, c32) SKP_MLA(SKP_SMLAWB((a32), (b32), (c32)), (b32), SKP_RSHIFT_ROUND((c32), 16)) + +/* add/subtract with output saturated */ +#define SKP_ADD_SAT32(a, b) ((((a) + (b)) & 0x80000000) == 0 ? \ + ((((a) & (b)) & 0x80000000) != 0 ? SKP_int32_MIN : (a)+(b)) : \ + ((((a) | (b)) & 0x80000000) == 0 ? SKP_int32_MAX : (a)+(b)) ) + +#define SKP_SUB_SAT32(a, b) ((((a)-(b)) & 0x80000000) == 0 ? \ + (( (a) & ((b)^0x80000000) & 0x80000000) ? SKP_int32_MIN : (a)-(b)) : \ + ((((a)^0x80000000) & (b) & 0x80000000) ? SKP_int32_MAX : (a)-(b)) ) + +SKP_INLINE SKP_int32 SKP_Silk_CLZ16(SKP_int16 in16) +{ + SKP_int32 out32 = 0; + if( in16 == 0 ) { + return 16; + } + /* test nibbles */ + if( in16 & 0xFF00 ) { + if( in16 & 0xF000 ) { + in16 >>= 12; + } else { + out32 += 4; + in16 >>= 8; + } + } else { + if( in16 & 0xFFF0 ) { + out32 += 8; + in16 >>= 4; + } else { + out32 += 12; + } + } + /* test bits and return */ + if( in16 & 0xC ) { + if( in16 & 0x8 ) + return out32 + 0; + else + + + + + + return out32 + 1; + } else { + if( in16 & 0xE ) + return out32 + 2; + else + return out32 + 3; + } +} + +SKP_INLINE SKP_int32 SKP_Silk_CLZ32(SKP_int32 in32) +{ + /* test highest 16 bits and convert to SKP_int16 */ + if( in32 & 0xFFFF0000 ) { + return SKP_Silk_CLZ16((SKP_int16)(in32 >> 16)); + } else { + return SKP_Silk_CLZ16((SKP_int16)in32) + 16; + } +} + +#endif //_SKP_SILK_API_C_H_ + + + diff --git a/libs/silk/src/SKP_Silk_main.h b/libs/silk/src/SKP_Silk_main.h new file mode 100644 index 0000000000..c368d67851 --- /dev/null +++ b/libs/silk/src/SKP_Silk_main.h @@ -0,0 +1,456 @@ + + +/*********************************************************************** + +Copyright (c) 2006-2010, Skype Limited. All rights reserved. +Redistribution and use in source and binary forms, with or without +modification, (subject to the limitations in the disclaimer below) +are permitted provided that the following conditions are met: +- Redistributions of source code must retain the above copyright notice, +this list of conditions and the following disclaimer. +- Redistributions in binary form must reproduce the above copyright +notice, this list of conditions and the following disclaimer in the +documentation and/or other materials provided with the distribution. +- Neither the name of Skype Limited, nor the names of specific +contributors, may be used to endorse or promote products derived from +this software without specific prior written permission. +NO EXPRESS OR IMPLIED LICENSES TO ANY PARTY'S PATENT RIGHTS ARE GRANTED +BY THIS LICENSE.THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND +CONTRIBUTORS ''AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, +BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND +FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE +COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, +INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT +NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF + + + + + +USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON +ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT +(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE +OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + +***********************************************************************/ + +#ifndef SKP_SILK_MAIN_H +#define SKP_SILK_MAIN_H + +#include "SKP_Silk_SigProc_FIX.h" +#include "SKP_Silk_define.h" +#include "SKP_Silk_structs.h" +#include "SKP_Silk_tables.h" +#include "SKP_Silk_PLC.h" + +#ifdef __cplusplus +extern "C" +{ +#endif + +/* Encodes signs of excitation */ +void SKP_Silk_encode_signs( + SKP_Silk_range_coder_state *psRC, /* I/O Range coder state */ + const SKP_int q[], /* I pulse signal */ + const SKP_int length, /* I length of input */ + const SKP_int sigtype, /* I Signal type */ + const SKP_int QuantOffsetType, /* I Quantization offset type */ + const SKP_int RateLevelIndex /* I Rate Level Index */ +); + +/* Decodes signs of excitation */ +void SKP_Silk_decode_signs( + SKP_Silk_range_coder_state *psRC, /* I/O Range coder state */ + SKP_int q[], /* I/O pulse signal */ + const SKP_int length, /* I length of output */ + const SKP_int sigtype, /* I Signal type */ + const SKP_int QuantOffsetType, /* I Quantization offset type */ + const SKP_int RateLevelIndex /* I Rate Level Index */ +); + +/***************/ +/* Shell coder */ +/***************/ + +/* Encode quantization indices of excitation */ +void SKP_Silk_encode_pulses( + SKP_Silk_range_coder_state *psRC, /* I/O Range coder state */ + + + + + + const SKP_int sigtype, /* I Sigtype */ + const SKP_int QuantOffsetType, /* I QuantOffsetType */ + const SKP_int q[], /* I quantization indices */ + const SKP_int frame_length /* I Frame length */ +); + +/* Shell encoder, operates on one shell code frame of 16 pulses */ +void SKP_Silk_shell_encoder( + SKP_Silk_range_coder_state *psRC, /* I/O compressor data structure */ + const SKP_int *pulses0 /* I data: nonnegative pulse amplitudes */ +); + +/* Shell decoder, operates on one shell code frame of 16 pulses */ +void SKP_Silk_shell_decoder( + SKP_int *pulses0, /* O data: nonnegative pulse amplitudes */ + SKP_Silk_range_coder_state *psRC, /* I/O compressor data structure */ + const SKP_int pulses4 /* I number of pulses per pulse-subframe */ +); + +/***************/ +/* Range coder */ +/***************/ +/* Range encoder for one symbol */ +void SKP_Silk_range_encoder( + SKP_Silk_range_coder_state *psRC, /* I/O compressor data structure */ + const SKP_int data, /* I uncompressed data */ + const SKP_uint16 prob[] /* I cumulative density functions */ +); + +/* Range encoder for multiple symbols */ +void SKP_Silk_range_encoder_multi( + SKP_Silk_range_coder_state *psRC, /* I/O compressor data structure */ + const SKP_int data[], /* I uncompressed data [nSymbols] */ + const SKP_uint16 * const prob[], /* I cumulative density functions */ + const SKP_int nSymbols /* I number of data symbols */ +); + +/* Range decoder for one symbol */ +void SKP_Silk_range_decoder( + SKP_int data[], /* O uncompressed data */ + SKP_Silk_range_coder_state *psRC, /* I/O compressor data structure */ + const SKP_uint16 prob[], /* I cumulative density function */ + SKP_int probIx /* I initial (middle) entry of cdf */ +); + +/* Range decoder for multiple symbols */ +void SKP_Silk_range_decoder_multi( + SKP_int data[], /* O uncompressed data [nSymbols] */ + + + + + + SKP_Silk_range_coder_state *psRC, /* I/O compressor data structure */ + const SKP_uint16 * const prob[], /* I cumulative density functions */ + const SKP_int probStartIx[], /* I initial (middle) entries of cdfs [nSymbols] */ + const SKP_int nSymbols /* I number of data symbols */ +); + +/* Initialize range coder structure for encoder */ +void SKP_Silk_range_enc_init( + SKP_Silk_range_coder_state *psRC /* O compressor data structure */ +); + +/* Initialize range coder structure for decoder */ +void SKP_Silk_range_dec_init( + SKP_Silk_range_coder_state *psRC, /* O compressor data structure */ + const SKP_uint8 buffer[], /* I buffer for compressed data [bufferLength] */ + const SKP_int32 bufferLength /* I buffer length (in bytes) */ +); + +/* Determine length of bitstream */ +SKP_int SKP_Silk_range_coder_get_length( /* O returns number of BITS in stream */ + const SKP_Silk_range_coder_state *psRC, /* I compressed data structure */ + SKP_int *nBytes /* O number of BYTES in stream */ +); + +/* Write decodable stream to buffer, and determine its length */ +void SKP_Silk_range_enc_wrap_up( + SKP_Silk_range_coder_state *psRC /* I/O compressed data structure */ +); + +/* Check that any remaining bits in the last byte are set to 1 */ +void SKP_Silk_range_coder_check_after_decoding( + SKP_Silk_range_coder_state *psRC /* I/O compressed data structure */ +); + +/* Gain scalar quantization with hysteresis, uniform on log scale */ +void SKP_Silk_gains_quant( + SKP_int ind[ NB_SUBFR ], /* O gain indices */ + SKP_int32 gain_Q16[ NB_SUBFR ], /* I/O gains (quantized out) */ + SKP_int *prev_ind, /* I/O last index in previous frame */ + const SKP_int conditional /* I first gain is delta coded if 1 */ +); + +/* Gains scalar dequantization, uniform on log scale */ +void SKP_Silk_gains_dequant( + SKP_int32 gain_Q16[ NB_SUBFR ], /* O quantized gains */ + const SKP_int ind[ NB_SUBFR ], /* I gain indices */ + SKP_int *prev_ind, /* I/O last index in previous frame */ + const SKP_int conditional /* I first gain is delta coded if 1 */ + + + + + +); + +/* Convert NLSF parameters to stable AR prediction filter coefficients */ +void SKP_Silk_NLSF2A_stable( + SKP_int16 pAR_Q12[ MAX_LPC_ORDER ], /* O Stabilized AR coefs [LPC_order] */ + const SKP_int pNLSF[ MAX_LPC_ORDER ], /* I NLSF vector [LPC_order] */ + const SKP_int LPC_order /* I LPC/LSF order */ +); + +/* Interpolate two vectors */ +void SKP_Silk_interpolate( + SKP_int xi[ MAX_LPC_ORDER ], /* O interpolated vector */ + const SKP_int x0[ MAX_LPC_ORDER ], /* I first vector */ + const SKP_int x1[ MAX_LPC_ORDER ], /* I second vector */ + const SKP_int ifact_Q2, /* I interp. factor, weight on 2nd vector */ + const SKP_int d /* I number of parameters */ +); + +/***********************************/ +/* Noise shaping quantization (NSQ)*/ +/***********************************/ +void SKP_Silk_NSQ( + SKP_Silk_encoder_state *psEncC, /* I/O Encoder State */ + SKP_Silk_encoder_control *psEncCtrlC, /* I Encoder Control */ + SKP_Silk_nsq_state *NSQ, /* I/O NSQ state */ + const SKP_int16 x[], /* I prefiltered input signal */ + SKP_int q[], /* O quantized qulse signal */ + const SKP_int LSFInterpFactor_Q2, /* I LSF interpolation factor in Q2 */ + const SKP_int16 PredCoef_Q12[ 2 * MAX_LPC_ORDER ], /* I Short term prediction coefficients */ + const SKP_int16 LTPCoef_Q14[ LTP_ORDER * NB_SUBFR ], /* I Long term prediction coefficients */ + const SKP_int16 AR2_Q13[ NB_SUBFR * SHAPE_LPC_ORDER_MAX ], /* I */ + const SKP_int HarmShapeGain_Q14[ NB_SUBFR ], /* I */ + const SKP_int Tilt_Q14[ NB_SUBFR ], /* I Spectral tilt */ + const SKP_int32 LF_shp_Q14[ NB_SUBFR ], /* I */ + const SKP_int32 Gains_Q16[ NB_SUBFR ], /* I */ + const SKP_int Lambda_Q10, /* I */ + const SKP_int LTP_scale_Q14 /* I LTP state scaling */ +); + +/* Noise shaping using delayed decision */ +void SKP_Silk_NSQ_del_dec( + SKP_Silk_encoder_state *psEncC, /* I/O Encoder State */ + SKP_Silk_encoder_control *psEncCtrlC, /* I Encoder Control */ + SKP_Silk_nsq_state *NSQ, /* I/O NSQ state */ + const SKP_int16 x[], /* I Prefiltered input signal */ + SKP_int q[], /* O Quantized pulse signal */ + const SKP_int LSFInterpFactor_Q2, /* I LSF interpolation factor in Q2 */ + const SKP_int16 PredCoef_Q12[ 2 * MAX_LPC_ORDER ], /* I Prediction coefs */ + + + + + + const SKP_int16 LTPCoef_Q14[ LTP_ORDER * NB_SUBFR ], /* I LT prediction coefs */ + const SKP_int16 AR2_Q13[ NB_SUBFR * SHAPE_LPC_ORDER_MAX ], /* I */ + const SKP_int HarmShapeGain_Q14[ NB_SUBFR ], /* I */ + const SKP_int Tilt_Q14[ NB_SUBFR ], /* I Spectral tilt */ + const SKP_int32 LF_shp_Q14[ NB_SUBFR ], /* I */ + const SKP_int32 Gains_Q16[ NB_SUBFR ], /* I */ + const SKP_int Lambda_Q10, /* I */ + const SKP_int LTP_scale_Q14 /* I LTP state scaling */ +); + +/************/ +/* Silk VAD */ +/************/ +/* Initialize the Silk VAD */ +SKP_int SKP_Silk_VAD_Init( /* O Return value, 0 if success */ + SKP_Silk_VAD_state *psSilk_VAD /* I/O Pointer to Silk VAD state */ +); + +/* Silk VAD noise level estimation */ +void SKP_Silk_VAD_GetNoiseLevels( + const SKP_int32 pX[ VAD_N_BANDS ], /* I subband energies */ + SKP_Silk_VAD_state *psSilk_VAD /* I/O Pointer to Silk VAD state */ +); + +/* Get speech activity level in Q8 */ +SKP_int SKP_Silk_VAD_GetSA_Q8( /* O Return value, 0 if success */ + SKP_Silk_VAD_state *psSilk_VAD, /* I/O Silk VAD state */ + SKP_int *pSA_Q8, /* O Speech activity level in Q8 */ + SKP_int *pSNR_dB_Q7, /* O SNR for current frame in Q7 */ + SKP_int pQuality_Q15[ VAD_N_BANDS ], /* O Smoothed SNR for each band */ + SKP_int *pTilt_Q15, /* O current frame's frequency tilt */ + const SKP_int16 pIn[], /* I PCM input [framelength] */ + const SKP_int framelength /* I Input frame length */ +); + +/* Detect signal in 8 - 12 khz range */ +void SKP_Silk_detect_SWB_input( + SKP_Silk_detect_SWB_state *psSWBdetect, /* I/O Encoder state */ + const SKP_int16 samplesIn[], /* I Input to encoder */ + SKP_int nSamplesIn /* I Length of input */ +); + +#if SWITCH_TRANSITION_FILTERING +/* Low-pass filter with variable cutoff frequency based on */ +/* piece-wise linear interpolation between elliptic filters */ +/* Start by setting transition_frame_no = 1; */ +void SKP_Silk_LP_variable_cutoff( + SKP_Silk_LP_state *psLP, /* I/O LP filter state */ + + + + + + SKP_int16 *out, /* O Low-pass filtered output signal */ + const SKP_int16 *in, /* I Input signal */ + const SKP_int frame_length /* I Frame length */ +); +#endif + +/****************************************************/ +/* Decoder Functions */ +/****************************************************/ +SKP_int SKP_Silk_create_decoder( + SKP_Silk_decoder_state **ppsDec /* I/O Decoder state pointer pointer */ +); + +SKP_int SKP_Silk_free_decoder( + SKP_Silk_decoder_state *psDec /* I/O Decoder state pointer */ +); + +SKP_int SKP_Silk_init_decoder( + SKP_Silk_decoder_state *psDec /* I/O Decoder state pointer */ +); + +/* Set decoder sampling rate */ +void SKP_Silk_decoder_set_fs( + SKP_Silk_decoder_state *psDec, /* I/O Decoder state pointer */ + SKP_int fs_kHz /* I Sampling frequency (kHz) */ +); + +/****************/ +/* Decode frame */ +/****************/ +SKP_int SKP_Silk_decode_frame( + SKP_Silk_decoder_state *psDec, /* I/O Pointer to Silk decoder state */ + SKP_int16 pOut[], /* O Pointer to output speech frame */ + SKP_int16 *pN, /* O Pointer to size of output frame */ + const SKP_uint8 pCode[], /* I Pointer to payload */ + const SKP_int nBytes, /* I Payload length */ + SKP_int action, /* I Action from Jitter Buffer */ + SKP_int *decBytes /* O Used bytes to decode this frame */ +); + +/* Decode parameters from payload */ +void SKP_Silk_decode_parameters( + SKP_Silk_decoder_state *psDec, /* I/O State */ + SKP_Silk_decoder_control *psDecCtrl, /* I/O Decoder control */ + SKP_int q[], /* O Excitation signal */ + const SKP_int fullDecoding /* I Flag to tell if only arithmetic decoding */ +); + + + + + + +/* Decode indices from payload v4 Bitstream */ +void SKP_Silk_decode_indices_v4( + SKP_Silk_decoder_state *psDec /* I/O State */ +); + +/* Decode parameters from payload v4 Bitstream */ +void SKP_Silk_decode_parameters_v4( + SKP_Silk_decoder_state *psDec, /* I/O State */ + SKP_Silk_decoder_control *psDecCtrl, /* I/O Decoder control */ + SKP_int q[ MAX_FRAME_LENGTH ], /* O Excitation signal */ + const SKP_int fullDecoding /* I Flag to tell if only arithmetic decoding */ +); + +/* Core decoder. Performs inverse NSQ operation LTP + LPC */ +void SKP_Silk_decode_core( + SKP_Silk_decoder_state *psDec, /* I/O Decoder state */ + SKP_Silk_decoder_control *psDecCtrl, /* I Decoder control */ + SKP_int16 xq[], /* O Decoded speech */ + const SKP_int q[ MAX_FRAME_LENGTH ] /* I Pulse signal */ +); + +/* NLSF vector decoder */ +void SKP_Silk_NLSF_MSVQ_decode( + SKP_int *pNLSF_Q15, /* O Pointer to decoded output [LPC_ORDER x 1] */ + const SKP_Silk_NLSF_CB_struct *psNLSF_CB, /* I Pointer to NLSF codebook struct */ + const SKP_int *NLSFIndices, /* I Pointer to NLSF indices [nStages x 1] */ + const SKP_int LPC_order /* I LPC order */ +); + +/**********************/ +/* Arithmetic coding */ +/*********************/ + +/* Decode quantization indices of excitation (Shell coding) */ +void SKP_Silk_decode_pulses( + SKP_Silk_range_coder_state *psRC, /* I/O Range coder state */ + SKP_Silk_decoder_control *psDecCtrl, /* I/O Decoder control */ + SKP_int q[], /* O Excitation signal */ + const SKP_int frame_length /* I Frame length (preliminary) */ +); + +/******************/ +/* CNG */ +/******************/ + +/* Reset CNG */ +void SKP_Silk_CNG_Reset( + SKP_Silk_decoder_state *psDec /* I/O Decoder state */ + + + + + +); + +/* Updates CNG estimate, and applies the CNG when packet was lost */ +void SKP_Silk_CNG( + SKP_Silk_decoder_state *psDec, /* I/O Decoder state */ + SKP_Silk_decoder_control *psDecCtrl, /* I/O Decoder control */ + SKP_int16 signal[], /* I/O Signal */ + SKP_int length /* I Length of residual */ +); + +/* Encoding of various parameters */ +void SKP_Silk_encode_parameters( + SKP_Silk_encoder_state *psEncC, /* I/O Encoder state */ + SKP_Silk_encoder_control *psEncCtrlC, /* I/O Encoder control */ + SKP_Silk_range_coder_state *psRC, /* I/O Range coder state */ + const SKP_int *q /* I Quantization indices */ +); + +/* Encoding of various parameters */ +void SKP_Silk_encode_parameters_v4( + SKP_Silk_encoder_state *psEncC, /* I/O Encoder state */ + SKP_Silk_encoder_control *psEncCtrlC, /* I/O Encoder control */ + SKP_Silk_range_coder_state *psRC /* I/O Range encoder state */ +); + +/* Extract lowest layer encoding */ +void SKP_Silk_get_low_layer_internal( + const SKP_uint8 *indata, /* I: Encoded input vector */ + const SKP_int16 nBytesIn, /* I: Number of input Bytes */ + SKP_uint8 *Layer0data, /* O: Layer0 payload */ + SKP_int16 *nLayer0Bytes /* O: Number of FEC Bytes */ +); + +/* Resets LBRR buffer, used if packet size changes */ +void SKP_Silk_LBRR_reset( + SKP_Silk_encoder_state *psEncC /* I/O Pointer to Silk encoder state */ +); + +/* Predict number of bytes used to encode q */ +SKP_int SKP_Silk_pulses_to_bytes( /* O Return value, predicted number of bytes used to encode q */ + SKP_Silk_encoder_state *psEncC, /* I/O Encoder State*/ + SKP_int q[] /* I Pulse signal */ +); + +#ifdef __cplusplus +} +#endif + + + + + + +#endif + + diff --git a/libs/silk/src/SKP_Silk_main_FIX.h b/libs/silk/src/SKP_Silk_main_FIX.h new file mode 100644 index 0000000000..637b63d119 --- /dev/null +++ b/libs/silk/src/SKP_Silk_main_FIX.h @@ -0,0 +1,361 @@ + + +/*********************************************************************** + +Copyright (c) 2006-2010, Skype Limited. All rights reserved. +Redistribution and use in source and binary forms, with or without +modification, (subject to the limitations in the disclaimer below) +are permitted provided that the following conditions are met: +- Redistributions of source code must retain the above copyright notice, +this list of conditions and the following disclaimer. +- Redistributions in binary form must reproduce the above copyright +notice, this list of conditions and the following disclaimer in the +documentation and/or other materials provided with the distribution. +- Neither the name of Skype Limited, nor the names of specific +contributors, may be used to endorse or promote products derived from +this software without specific prior written permission. +NO EXPRESS OR IMPLIED LICENSES TO ANY PARTY'S PATENT RIGHTS ARE GRANTED +BY THIS LICENSE.THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND +CONTRIBUTORS ''AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, +BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND +FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE +COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, +INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT +NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF +USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON +ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT +(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE +OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + +***********************************************************************/ + +#ifndef SKP_SILK_MAIN_FIX_H +#define SKP_SILK_MAIN_FIX_H + +#include +#include "SKP_Silk_SigProc_FIX.h" +#include "SKP_Silk_structs_FIX.h" +#include "SKP_Silk_tables_FIX.h" +#include "SKP_Silk_main.h" +#include "SKP_Silk_define_FIX.h" +#include "SKP_Silk_PLC.h" +#define TIC(TAG_NAME) +#define TOC(TAG_NAME) + + + + + + +#ifndef FORCE_CPP_BUILD +#ifdef __cplusplus +extern "C" +{ +#endif +#endif + +/*********************/ +/* Encoder Functions */ +/*********************/ + +/* Initializes the Silk encoder state */ +SKP_int SKP_Silk_init_encoder_FIX( + SKP_Silk_encoder_state_FIX *psEnc /* I/O Pointer to Silk FIX encoder state */ +); + +/* Control the Silk encoder */ +SKP_int SKP_Silk_control_encoder_FIX( + SKP_Silk_encoder_state_FIX *psEnc, /* I/O Pointer to Silk FIX encoder state */ + const SKP_int API_fs_kHz, /* I External (API) sampling rate (kHz) */ + const SKP_int PacketSize_ms, /* I Packet length (ms) */ + SKP_int32 TargetRate_bps, /* I Target max bitrate (bps) (used if SNR_dB == 0) */ + const SKP_int PacketLoss_perc, /* I Packet loss rate (in percent) */ + const SKP_int INBandFec_enabled, /* I Enable (1) / disable (0) inband FEC */ + const SKP_int DTX_enabled, /* I Enable / disable DTX */ + const SKP_int InputFramesize_ms, /* I Inputframe in ms */ + const SKP_int Complexity /* I Complexity (0->low; 1->medium; 2->high) */ +); + +/* Encoder main function */ +SKP_int SKP_Silk_encode_frame_FIX( + SKP_Silk_encoder_state_FIX *psEnc, /* I/O Pointer to Silk FIX encoder state */ + SKP_uint8 *pCode, /* O Pointer to payload */ + SKP_int16 *pnBytesOut, /* I/O Pointer to number of payload bytes; */ + /* input: max length; output: used */ + const SKP_int16 *pIn /* I Pointer to input speech frame */ +); + +/* Low BitRate Redundancy encoding functionality. Reuse all parameters but encode with lower bitrate */ +void SKP_Silk_LBRR_encode_FIX( + SKP_Silk_encoder_state_FIX *psEnc, /* I/O Pointer to Silk FIX encoder state */ + SKP_Silk_encoder_control_FIX *psEncCtrl, /* I/O Pointer to Silk FIX encoder control struct */ + SKP_uint8 *pCode, /* O Pointer to payload */ + SKP_int16 *pnBytesOut, /* I/O Pointer to number of payload bytes */ + SKP_int16 xfw[] /* I Input signal */ +); + +/* High-pass filter with cutoff frequency adaptation based on pitch lag statistics */ + + + + + +void SKP_Silk_HP_variable_cutoff_FIX( + SKP_Silk_encoder_state_FIX *psEnc, /* I/O Encoder state */ + SKP_Silk_encoder_control_FIX *psEncCtrl, /* I/O Encoder control */ + SKP_int16 *out, /* O high-pass filtered output signal */ + const SKP_int16 *in /* I input signal */ +); + +/****************/ +/* Prefiltering */ +/****************/ +void SKP_Silk_prefilter_FIX( + SKP_Silk_encoder_state_FIX *psEnc, /* I/O Encoder state */ + const SKP_Silk_encoder_control_FIX *psEncCtrl, /* I Encoder control */ + SKP_int16 xw[], /* O Weighted signal */ + const SKP_int16 x[] /* I Speech signal */ +); + +/**************************************************************/ +/* Compute noise shaping coefficients and initial gain values */ +/**************************************************************/ +void SKP_Silk_noise_shape_analysis_FIX( + SKP_Silk_encoder_state_FIX *psEnc, /* I/O Encoder state */ + SKP_Silk_encoder_control_FIX *psEncCtrl, /* I/O Encoder control */ + const SKP_int16 *pitch_res, /* I LPC residual from pitch analysis */ + const SKP_int16 *x /* I Input signal [ 2 * frame_length + la_shape ]*/ +); + +/* Processing of gains */ +void SKP_Silk_process_gains_FIX( + SKP_Silk_encoder_state_FIX *psEnc, /* I/O Encoder state */ + SKP_Silk_encoder_control_FIX *psEncCtrl /* I/O Encoder control */ +); + + +/* Control low bitrate redundancy usage */ +void SKP_Silk_LBRR_ctrl_FIX( + SKP_Silk_encoder_state_FIX *psEnc, /* I/O encoder state */ + SKP_Silk_encoder_control_FIX *psEncCtrl /* I/O encoder control */ +); + +/* Calculation of LTP state scaling */ +void SKP_Silk_LTP_scale_ctrl_FIX( + SKP_Silk_encoder_state_FIX *psEnc, /* I/O encoder state */ + SKP_Silk_encoder_control_FIX *psEncCtrl /* I/O encoder control */ +); + +/**********************************************/ +/* Prediction Analysis */ + + + + + +/**********************************************/ + +/* Find pitch lags */ +void SKP_Silk_find_pitch_lags_FIX( + SKP_Silk_encoder_state_FIX *psEnc, /* I/O encoder state */ + SKP_Silk_encoder_control_FIX *psEncCtrl, /* I/O encoder control */ + SKP_int16 res[], /* O residual */ + const SKP_int16 x[] /* I Speech signal */ +); + +void SKP_Silk_find_pred_coefs_FIX( + SKP_Silk_encoder_state_FIX *psEnc, /* I/O encoder state */ + SKP_Silk_encoder_control_FIX *psEncCtrl, /* I/O encoder control */ + const SKP_int16 res_pitch[] /* I Residual from pitch analysis */ +); + +void SKP_Silk_find_LPC_FIX( + SKP_int NLSF_Q15[], /* O LSFs */ + SKP_int *interpIndex, /* O LSF interpolation index, only used for LSF interpolation */ + const SKP_int prev_NLSFq_Q15[], /* I previous LSFs, only used for LSF interpolation */ + const SKP_int useInterpolatedLSFs, /* I Flag */ + const SKP_int LPC_order, /* I LPC order */ + const SKP_int16 x[], /* I Input signal */ + const SKP_int subfr_length /* I Input signal subframe length including preceeding samples */ +); + +void SKP_Silk_LTP_analysis_filter_FIX( + SKP_int16 *LTP_res, /* O: LTP residual signal of length NB_SUBFR * ( pre_length + subfr_length ) */ + const SKP_int16 *x, /* I: Pointer to input signal with at least max( pitchL ) preceeding samples */ + const SKP_int16 LTPCoef_Q14[ LTP_ORDER * NB_SUBFR ],/* I: LTP_ORDER LTP coefficients for each NB_SUBFR subframe */ + const SKP_int pitchL[ NB_SUBFR ], /* I: Pitch lag, one for each subframe */ + const SKP_int32 invGains_Qxx[ NB_SUBFR ], /* I: Inverse quantization gains, one for each subframe */ + const SKP_int Qxx, /* I: Inverse quantization gains Q domain */ + const SKP_int subfr_length, /* I: Length of each subframe */ + const SKP_int pre_length /* I: Length of the preceeding samples starting at &x[0] for each subframe */ +); + +/* Finds LTP vector from correlations */ +void SKP_Silk_find_LTP_FIX( + SKP_int16 b_Q14[ NB_SUBFR * LTP_ORDER ], /* O LTP coefs */ + SKP_int32 WLTP[ NB_SUBFR * LTP_ORDER * LTP_ORDER ], /* O Weight for LTP quantization */ + SKP_int *LTPredCodGain_Q7, /* O LTP coding gain */ + const SKP_int16 r_first[], /* I residual signal after LPC signal + state for first 10 ms */ + const SKP_int16 r_last[], /* I residual signal after LPC signal + state for last 10 ms */ + const SKP_int lag[ NB_SUBFR ], /* I LTP lags */ + const SKP_int32 Wght_Q15[ NB_SUBFR ], /* I weights */ + const SKP_int subfr_length, /* I subframe length */ + const SKP_int mem_offset, /* I number of samples in LTP memory */ + + + + + + SKP_int corr_rshifts[ NB_SUBFR ] /* O right shifts applied to correlations */ +); + +/* LTP tap quantizer */ +void SKP_Silk_quant_LTP_gains_FIX( + SKP_int16 B_Q14[], /* I/O (un)quantized LTP gains */ + SKP_int cbk_index[], /* O Codebook Index */ + SKP_int *periodicity_index, /* O Periodicity Index */ + const SKP_int32 W_Q18[], /* I Error Weights in Q18 */ + SKP_int mu_Q8, /* I Mu value (R/D tradeoff) */ + SKP_int lowComplexity /* I Flag for low complexity */ +); + +/******************/ +/* NLSF Quantizer */ +/******************/ + +/* Limit, stabilize, convert and quantize NLSFs. */ +void SKP_Silk_process_NLSFs_FIX( + SKP_Silk_encoder_state_FIX *psEnc, /* I/O encoder state */ + SKP_Silk_encoder_control_FIX *psEncCtrl, /* I/O encoder control */ + SKP_int *pNLSF_Q15 /* I/O Normalized LSFs (quant out) (0 - (2^15-1)) */ +); + +/* LSF vector encoder */ +void SKP_Silk_NLSF_MSVQ_encode_FIX( + SKP_int *NLSFIndices, /* O Pointer to codebook path vector [CB_STAGES x1] */ + SKP_int *pNLSF_Q15, /* I/O Pointer to quantized NLSF vector [LPC_order x1] */ + const SKP_Silk_NLSF_CB_struct *psNLSF_CB, /* I Pointer to codebook object */ + const SKP_int *pNLSF_q_Q15_prev, /* I Pointer to previously quantized NLSF vector [LPC_order x1] */ + const SKP_int *pW_Qx, /* I Pointer to NLSF weight vector [LPC_order x1] */ + const SKP_int NLSF_mu_Q15, /* I Rate weight for the RD optimization */ + const SKP_int NLSF_mu_fluc_red_Q16, /* I Fluctuation error weight for fluctuation reduction */ + const SKP_int NLSF_MSVQ_Max_Survivors,/* I Maximum number of survivors from each stage */ + const SKP_int LPC_order, /* I LPC order */ + const SKP_int deactivate_fluc_red /* I Deactivate fluctuation reduction, e.g. right after a reset */ +); + +/* Weighted VQ with entropy constraints, for multiple input data vectors */ +void SKP_Silk_NLSF_VQ_nearest_neighbor_FIX( + SKP_int32 *pRD_Q20, /* O rate-distortion of psNLSF_CB_stage->nVectors best codebook vectors, for each input vector*/ + const SKP_Silk_NLSF_CB_Stage_struct *psNLSF_CB_stage,/* I pointer to NLSF codebook stage struct */ + const SKP_int *in_Q15, /* I input vectors to be quantized */ + const SKP_int *w_Q6, /* I weighting vector */ + const SKP_int32 *rate_acc_Q5, /* I Accumulated rate from first to previous stage for each input vector */ + const SKP_int mu_Q15, /* I tradeoffs between weighted error and rate */ + const SKP_int N, /* I number of input vectors to be quantized */ + const SKP_int LPC_order /* I LPC order */ + + + + + +); + +/* Compute weighted quantization errors for an LPC_order element input vector, over one codebook stage */ +void SKP_Silk_NLSF_VQ_sum_error_FIX( + SKP_int32 *err_Q20, /* O Weighted quantization errors [N*K] */ + const SKP_int *in_Q15, /* I Input vectors to be quantized [N*LPC_order] */ + const SKP_int *w_Q6, /* I Weighting vectors [N*LPC_order] */ + const SKP_int16 *pCB_Q15, /* I Codebook vectors [K*LPC_order] */ + const SKP_int N, /* I Number of input vectors */ + const SKP_int K, /* I Number of codebook vectors */ + const SKP_int LPC_order /* I Number of LPCs */ +); + +/* Entropy constrained MATRIX-weighted VQ, for a single input data vector */ +void SKP_Silk_VQ_WMat_EC_FIX( + SKP_int *ind, /* O index of best codebook vector */ + SKP_int32 *rate_dist_Q14, /* O best weighted quantization error + mu * rate*/ + const SKP_int16 *in_Q14, /* I input vector to be quantized */ + const SKP_int32 *W_Q18, /* I weighting matrix */ + const SKP_int16 *cb_Q14, /* I codebook */ + const SKP_int16 *cl_Q6, /* I code length for each codebook vector */ + const SKP_int mu_Q8, /* I tradeoff between weighted error and rate */ + SKP_int L /* I number of vectors in codebook */ +); + +/******************/ +/* Linear Algebra */ +/******************/ + +/* Calculates correlation matrix X'*X */ +void SKP_Silk_corrMatrix_FIX( + const SKP_int16 *x, /* I x vector [L + order - 1] used to form data matrix X */ + const SKP_int L, /* I Length of vectors */ + const SKP_int order, /* I Max lag for correlation */ + SKP_int32 *XX, /* O Pointer to X'*X correlation matrix [ order x order ]*/ + SKP_int *rshifts /* I/O Right shifts of correlations */ +); + +/* Calculates correlation vector X'*t */ +void SKP_Silk_corrVector_FIX( + const SKP_int16 *x, /* I x vector [L + order - 1] used to form data matrix X */ + const SKP_int16 *t, /* I target vector [L] */ + const SKP_int L, /* I Length of vectors */ + const SKP_int order, /* I Max lag for correlation */ + SKP_int32 *Xt, /* O Pointer to X'*t correlation vector [order] */ + const SKP_int rshifts /* I Right shifts of correlations */ +); + + + + + + +/* Add noise to matrix diagonal */ +void SKP_Silk_regularize_correlations_FIX( + SKP_int32 *XX, /* I/O Correlation matrices */ + SKP_int32 *xx, /* I/O Correlation values */ + SKP_int32 noise, /* I Noise to add */ + SKP_int D /* I Dimension of XX */ +); + +/* Solves Ax = b, assuming A is symmetric */ +void SKP_Silk_solve_LDL_FIX( + SKP_int32 *A, /* I Pointer to symetric square matrix A */ + SKP_int M, /* I Size of matrix */ + const SKP_int32 *b, /* I Pointer to b vector */ + SKP_int32 *x_Q16 /* O Pointer to x solution vector */ +); + +/* Residual energy: nrg = wxx - 2 * wXx * c + c' * wXX * c */ +SKP_int32 SKP_Silk_residual_energy16_covar_FIX( + const SKP_int16 *c, /* I Prediction vector */ + const SKP_int32 *wXX, /* I Correlation matrix */ + const SKP_int32 *wXx, /* I Correlation vector */ + SKP_int32 wxx, /* I Signal energy */ + SKP_int D, /* I Dimension */ + SKP_int cQ /* I Q value for c vector 0 - 15 */ +); + +/* Calculates residual energies of input subframes where all subframes have LPC_order */ +/* of preceeding samples */ +void SKP_Silk_residual_energy_FIX( + SKP_int32 nrgs[ NB_SUBFR ], /* O Residual energy per subframe */ + SKP_int nrgsQ[ NB_SUBFR ], /* O Q value per subframe */ + const SKP_int16 x[], /* I Input signal */ + const SKP_int16 a_Q12[ 2 ][ MAX_LPC_ORDER ],/* I AR coefs for each frame half */ + const SKP_int32 gains_Qx[ NB_SUBFR ], /* I Quantization gains in Qx */ + const SKP_int Qx, /* I Quantization gains Q value */ + const SKP_int subfr_length, /* I Subframe length */ + const SKP_int LPC_order /* I LPC order */ +); + +#ifndef FORCE_CPP_BUILD +#ifdef __cplusplus +} +#endif /* __cplusplus */ +#endif /* FORCE_CPP_BUILD */ +#endif /* SKP_SILK_MAIN_FIX_H */ + + diff --git a/libs/silk/src/SKP_Silk_noise_shape_analysis_FIX.c b/libs/silk/src/SKP_Silk_noise_shape_analysis_FIX.c new file mode 100644 index 0000000000..7b4b6a2f55 --- /dev/null +++ b/libs/silk/src/SKP_Silk_noise_shape_analysis_FIX.c @@ -0,0 +1,379 @@ + + +/*********************************************************************** + +Copyright (c) 2006-2010, Skype Limited. All rights reserved. +Redistribution and use in source and binary forms, with or without +modification, (subject to the limitations in the disclaimer below) +are permitted provided that the following conditions are met: +- Redistributions of source code must retain the above copyright notice, +this list of conditions and the following disclaimer. +- Redistributions in binary form must reproduce the above copyright +notice, this list of conditions and the following disclaimer in the +documentation and/or other materials provided with the distribution. +- Neither the name of Skype Limited, nor the names of specific +contributors, may be used to endorse or promote products derived from + + + + + +this software without specific prior written permission. +NO EXPRESS OR IMPLIED LICENSES TO ANY PARTY'S PATENT RIGHTS ARE GRANTED +BY THIS LICENSE.THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND +CONTRIBUTORS ''AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, +BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND +FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE +COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, +INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT +NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF +USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON +ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT +(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE +OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + +***********************************************************************/ + +#include "SKP_Silk_main_FIX.h" +#include "SKP_Silk_perceptual_parameters_FIX.h" + + +/**************************************************************/ +/* Compute noise shaping coefficients and initial gain values */ +/**************************************************************/ +void SKP_Silk_noise_shape_analysis_FIX( + SKP_Silk_encoder_state_FIX *psEnc, /* I/O Encoder state FIX */ + SKP_Silk_encoder_control_FIX *psEncCtrl, /* I/O Encoder control FIX */ + const SKP_int16 *pitch_res, /* I LPC residual from pitch analysis */ + const SKP_int16 *x /* I Input signal [ 2 * frame_length + la_shape ]*/ +) +{ + SKP_Silk_shape_state_FIX *psShapeSt = &psEnc->sShape; + SKP_int k, nSamples, lz, Qnrg, b_Q14, scale = 0, sz; + SKP_int32 SNR_adj_dB_Q7, HarmBoost_Q16, HarmShapeGain_Q16, Tilt_Q16, tmp32; + SKP_int32 nrg, pre_nrg_Q30, log_energy_Q7, log_energy_prev_Q7, energy_variation_Q7; + SKP_int32 delta_Q16, BWExp1_Q16, BWExp2_Q16, gain_mult_Q16, gain_add_Q16, strength_Q16, b_Q8; + SKP_int32 auto_corr[ SHAPE_LPC_ORDER_MAX + 1 ]; + SKP_int32 refl_coef_Q16[ SHAPE_LPC_ORDER_MAX ]; + SKP_int32 AR_Q24[ SHAPE_LPC_ORDER_MAX ]; + SKP_int16 x_windowed[ SHAPE_LPC_WIN_MAX ]; + const SKP_int16 *x_ptr, *pitch_res_ptr; + + SKP_int32 sqrt_nrg[ NB_SUBFR ], Qnrg_vec[ NB_SUBFR ]; + + /* Point to start of first LPC analysis block */ + x_ptr = x + psEnc->sCmn.la_shape - SKP_SMULBB( SHAPE_LPC_WIN_MS, psEnc->sCmn.fs_kHz ) + psEnc->sCmn.frame_length / NB_SUBFR; + + /****************/ + /* CONTROL SNR */ + + + + + + /****************/ + /* Reduce SNR_dB values if recent bitstream has exceeded TargetRate */ + psEncCtrl->current_SNR_dB_Q7 = psEnc->SNR_dB_Q7 - SKP_SMULWB( SKP_LSHIFT( (SKP_int32)psEnc->BufferedInChannel_ms, 7 ), 3277 ); + + /* Reduce SNR_dB if inband FEC used */ + if( psEnc->speech_activity_Q8 > LBRR_SPEECH_ACTIVITY_THRES_Q8 ) { + psEncCtrl->current_SNR_dB_Q7 -= SKP_RSHIFT( psEnc->inBandFEC_SNR_comp_Q8, 1 ); + } + + /****************/ + /* GAIN CONTROL */ + /****************/ + /* Input quality is the average of the quality in the lowest two VAD bands */ + psEncCtrl->input_quality_Q14 = (SKP_int)SKP_RSHIFT( (SKP_int32)psEncCtrl->input_quality_bands_Q15[ 0 ] + + psEncCtrl->input_quality_bands_Q15[ 1 ], 2 ); + /* Coding quality level, between 0.0_Q0 and 1.0_Q0, but in Q14 */ + psEncCtrl->coding_quality_Q14 = SKP_RSHIFT( SKP_Silk_sigm_Q15( SKP_RSHIFT_ROUND( psEncCtrl->current_SNR_dB_Q7 - ( 18 << 7 ), 4 ) ), 1 ); + + /* Reduce coding SNR during low speech activity */ + b_Q8 = ( 1 << 8 ) - psEnc->speech_activity_Q8; + b_Q8 = SKP_SMULWB( SKP_LSHIFT( b_Q8, 8 ), b_Q8 ); + SNR_adj_dB_Q7 = SKP_SMLAWB( psEncCtrl->current_SNR_dB_Q7, + SKP_SMULBB( -BG_SNR_DECR_dB_Q7 >> ( 4 + 1 ), b_Q8 ), // Q11 + SKP_SMULWB( ( 1 << 14 ) + psEncCtrl->input_quality_Q14, psEncCtrl->coding_quality_Q14 ) ); // Q12 + + if( psEncCtrl->sCmn.sigtype == SIG_TYPE_VOICED ) { + /* Reduce gains for periodic signals */ + SNR_adj_dB_Q7 = SKP_SMLAWB( SNR_adj_dB_Q7, HARM_SNR_INCR_dB_Q7 << 1, psEnc->LTPCorr_Q15 ); + } else { + /* For unvoiced signals and low-quality input, adjust the quality slower than SNR_dB setting */ + SNR_adj_dB_Q7 = SKP_SMLAWB( SNR_adj_dB_Q7, + SKP_SMLAWB( 6 << ( 7 + 2 ), -104856, psEncCtrl->current_SNR_dB_Q7 ), //-104856_Q18 = -0.4_Q0, Q9 + ( 1 << 14 ) - psEncCtrl->input_quality_Q14 ); // Q14 + } + + /*************************/ + /* SPARSENESS PROCESSING */ + /*************************/ + /* Set quantizer offset */ + if( psEncCtrl->sCmn.sigtype == SIG_TYPE_VOICED ) { + /* Initally set to 0; may be overruled in process_gains(..) */ + psEncCtrl->sCmn.QuantOffsetType = 0; + psEncCtrl->sparseness_Q8 = 0; + } else { + /* Sparseness measure, based on relative fluctuations of energy per 2 milliseconds */ + nSamples = SKP_LSHIFT( psEnc->sCmn.fs_kHz, 1 ); + energy_variation_Q7 = 0; + log_energy_prev_Q7 = 0; + + + + + + pitch_res_ptr = pitch_res; + for( k = 0; k < FRAME_LENGTH_MS / 2; k++ ) { + SKP_Silk_sum_sqr_shift( &nrg, &scale, pitch_res_ptr, nSamples ); + nrg += SKP_RSHIFT( nSamples, scale ); // Q(-scale) + + log_energy_Q7 = SKP_Silk_lin2log( nrg ); + if( k > 0 ) { + energy_variation_Q7 += SKP_abs( log_energy_Q7 - log_energy_prev_Q7 ); + } + log_energy_prev_Q7 = log_energy_Q7; + pitch_res_ptr += nSamples; + } + + psEncCtrl->sparseness_Q8 = SKP_RSHIFT( SKP_Silk_sigm_Q15( SKP_SMULWB( energy_variation_Q7 - ( 5 << 7 ), 6554 ) ), 7 ); // 6554_Q16 = 0.1_Q0 + + /* Set quantization offset depending on sparseness measure */ + if( psEncCtrl->sparseness_Q8 > SPARSENESS_THRESHOLD_QNT_OFFSET_Q8 ) { + psEncCtrl->sCmn.QuantOffsetType = 0; + } else { + psEncCtrl->sCmn.QuantOffsetType = 1; + } + + /* Increase coding SNR for sparse signals */ + SNR_adj_dB_Q7 = SKP_SMLAWB( SNR_adj_dB_Q7, SPARSE_SNR_INCR_dB_Q7 << 8, psEncCtrl->sparseness_Q8 - ( 1 << 7 ) ); + } + + /*******************************/ + /* Control bandwidth expansion */ + /*******************************/ + delta_Q16 = SKP_SMULWB( ( 1 << 16 ) - SKP_SMULBB( 3, psEncCtrl->coding_quality_Q14 ), LOW_RATE_BANDWIDTH_EXPANSION_DELTA_Q16 ); + BWExp1_Q16 = BANDWIDTH_EXPANSION_Q16 - delta_Q16; + BWExp2_Q16 = BANDWIDTH_EXPANSION_Q16 + delta_Q16; + if( psEnc->sCmn.fs_kHz == 24 ) { + /* Less bandwidth expansion for super wideband */ + BWExp1_Q16 = ( 1 << 16 ) - SKP_SMULWB( SWB_BANDWIDTH_EXPANSION_REDUCTION_Q16, ( 1 << 16 ) - BWExp1_Q16 ); + BWExp2_Q16 = ( 1 << 16 ) - SKP_SMULWB( SWB_BANDWIDTH_EXPANSION_REDUCTION_Q16, ( 1 << 16 ) - BWExp2_Q16 ); + } + /* BWExp1 will be applied after BWExp2, so make it relative */ + BWExp1_Q16 = SKP_DIV32_16( SKP_LSHIFT( BWExp1_Q16, 14 ), SKP_RSHIFT( BWExp2_Q16, 2 ) ); + + /********************************************/ + /* Compute noise shaping AR coefs and gains */ + /********************************************/ + sz = (SKP_int)SKP_SMULBB( SHAPE_LPC_WIN_MS, psEnc->sCmn.fs_kHz ); + for( k = 0; k < NB_SUBFR; k++ ) { + /* Apply window */ + SKP_Silk_apply_sine_window( x_windowed, x_ptr, 0, SHAPE_LPC_WIN_MS * psEnc->sCmn.fs_kHz ); + + + + + + + /* Update pointer: next LPC analysis block */ + x_ptr += psEnc->sCmn.frame_length / NB_SUBFR; + + /* Calculate auto correlation */ + SKP_Silk_autocorr( auto_corr, &scale, x_windowed, sz, psEnc->sCmn.shapingLPCOrder + 1 ); + + /* Add white noise, as a fraction of energy */ + auto_corr[0] = SKP_ADD32( auto_corr[0], SKP_max_32( SKP_SMULWB( SKP_RSHIFT( auto_corr[ 0 ], 4 ), SHAPE_WHITE_NOISE_FRACTION_Q20 ), 1 ) ); + + /* Calculate the reflection coefficients using schur */ + nrg = SKP_Silk_schur64( refl_coef_Q16, auto_corr, psEnc->sCmn.shapingLPCOrder ); + + /* Convert reflection coefficients to prediction coefficients */ + SKP_Silk_k2a_Q16( AR_Q24, refl_coef_Q16, psEnc->sCmn.shapingLPCOrder ); + + /* Bandwidth expansion for synthesis filter shaping */ + SKP_Silk_bwexpander_32( AR_Q24, psEnc->sCmn.shapingLPCOrder, BWExp2_Q16 ); + + /* Make sure to fit in Q13 SKP_int16 */ + SKP_Silk_LPC_fit( &psEncCtrl->AR2_Q13[ k * SHAPE_LPC_ORDER_MAX ], AR_Q24, 13, psEnc->sCmn.shapingLPCOrder ); + + /* Compute noise shaping filter coefficients */ + SKP_memcpy( + &psEncCtrl->AR1_Q13[ k * SHAPE_LPC_ORDER_MAX ], + &psEncCtrl->AR2_Q13[ k * SHAPE_LPC_ORDER_MAX ], + psEnc->sCmn.shapingLPCOrder * sizeof( SKP_int16 ) ); + + /* Bandwidth expansion for analysis filter shaping */ + SKP_assert( BWExp1_Q16 <= ( 1 << 16 ) ); // If ever breaking, use LPC_stabilize() in these cases to stay within range + SKP_Silk_bwexpander( &psEncCtrl->AR1_Q13[ k * SHAPE_LPC_ORDER_MAX ], psEnc->sCmn.shapingLPCOrder, BWExp1_Q16 ); + + /* Increase residual energy */ + nrg = SKP_SMLAWB( nrg, SKP_RSHIFT( auto_corr[ 0 ], 8 ), SHAPE_MIN_ENERGY_RATIO_Q24 ); + + Qnrg = -scale; // range: -12...30 + SKP_assert( Qnrg >= -12 ); + SKP_assert( Qnrg <= 30 ); + + /* Make sure that Qnrg is an even number */ + if( Qnrg & 1 ) { + Qnrg -= 1; + nrg >>= 1; + } + + tmp32 = SKP_Silk_SQRT_APPROX( nrg ); + Qnrg >>= 1; // range: -6...15 + + sqrt_nrg[ k ] = tmp32; + + + + + + Qnrg_vec[ k ] = Qnrg; + + psEncCtrl->Gains_Q16[ k ] = SKP_LSHIFT_SAT32( tmp32, 16 - Qnrg ); + /* Ratio of prediction gains, in energy domain */ + SKP_Silk_LPC_inverse_pred_gain_Q13( &pre_nrg_Q30, &psEncCtrl->AR2_Q13[ k * SHAPE_LPC_ORDER_MAX ], psEnc->sCmn.shapingLPCOrder ); + SKP_Silk_LPC_inverse_pred_gain_Q13( &nrg, &psEncCtrl->AR1_Q13[ k * SHAPE_LPC_ORDER_MAX ], psEnc->sCmn.shapingLPCOrder ); + + lz = SKP_min_32( SKP_Silk_CLZ32( pre_nrg_Q30 ) - 1, 19 ); + pre_nrg_Q30 = SKP_DIV32( SKP_LSHIFT( pre_nrg_Q30, lz ), SKP_RSHIFT( nrg, 20 - lz ) + 1 ); // Q20 + pre_nrg_Q30 = SKP_RSHIFT( SKP_LSHIFT_SAT32( pre_nrg_Q30, 9 ), 1 ); /* Q28 */ + psEncCtrl->GainsPre_Q14[ k ] = (SKP_int)SKP_Silk_SQRT_APPROX( pre_nrg_Q30 ); + } + + /*****************/ + /* Gain tweaking */ + /*****************/ + /* Increase gains during low speech activity and put lower limit on gains */ + gain_mult_Q16 = SKP_Silk_log2lin( -SKP_SMLAWB( -16 << 7, SNR_adj_dB_Q7, 10486 ) ); // 10486_Q16 = 0.16_Q0 + gain_add_Q16 = SKP_Silk_log2lin( SKP_SMLAWB( 16 << 7, NOISE_FLOOR_dB_Q7, 10486 ) ); // 10486_Q16 = 0.16_Q0 + tmp32 = SKP_Silk_log2lin( SKP_SMLAWB( 16 << 7, RELATIVE_MIN_GAIN_dB_Q7, 10486 ) ); // 10486_Q16 = 0.16_Q0 + tmp32 = SKP_SMULWW( psEnc->avgGain_Q16, tmp32 ); + gain_add_Q16 = SKP_ADD_SAT32( gain_add_Q16, tmp32 ); + SKP_assert( gain_mult_Q16 >= 0 ); + + for( k = 0; k < NB_SUBFR; k++ ) { + psEncCtrl->Gains_Q16[ k ] = SKP_SMULWW( psEncCtrl->Gains_Q16[ k ], gain_mult_Q16 ); + SKP_assert( psEncCtrl->Gains_Q16[ k ] >= 0 ); + } + + for( k = 0; k < NB_SUBFR; k++ ) { + psEncCtrl->Gains_Q16[ k ] = SKP_ADD_POS_SAT32( psEncCtrl->Gains_Q16[ k ], gain_add_Q16 ); + psEnc->avgGain_Q16 = SKP_ADD_SAT32( + psEnc->avgGain_Q16, + SKP_SMULWB( + psEncCtrl->Gains_Q16[ k ] - psEnc->avgGain_Q16, + SKP_RSHIFT_ROUND( SKP_SMULBB( psEnc->speech_activity_Q8, GAIN_SMOOTHING_COEF_Q10 ), 2 ) + ) ); + } + + /************************************************/ + /* Decrease level during fricatives (de-essing) */ + /************************************************/ + gain_mult_Q16 = ( 1 << 16 ) + SKP_RSHIFT_ROUND( SKP_MLA( INPUT_TILT_Q26, psEncCtrl->coding_quality_Q14, HIGH_RATE_INPUT_TILT_Q12 ), 10 ); + + if( psEncCtrl->input_tilt_Q15 <= 0 && psEncCtrl->sCmn.sigtype == SIG_TYPE_UNVOICED ) { + if( psEnc->sCmn.fs_kHz == 24 ) { + SKP_int32 essStrength_Q15 = SKP_SMULWW( -psEncCtrl->input_tilt_Q15, + SKP_SMULBB( psEnc->speech_activity_Q8, ( 1 << 8 ) - psEncCtrl->sparseness_Q8 ) ); + + + + + + tmp32 = SKP_Silk_log2lin( ( 16 << 7 ) - SKP_SMULWB( essStrength_Q15, + SKP_SMULWB( DE_ESSER_COEF_SWB_dB_Q7, 20972 ) ) ); // 20972_Q17 = 0.16_Q0 + gain_mult_Q16 = SKP_SMULWW( gain_mult_Q16, tmp32 ); + } else if( psEnc->sCmn.fs_kHz == 16 ) { + SKP_int32 essStrength_Q15 = SKP_SMULWW(-psEncCtrl->input_tilt_Q15, + SKP_SMULBB( psEnc->speech_activity_Q8, ( 1 << 8 ) - psEncCtrl->sparseness_Q8 )); + tmp32 = SKP_Silk_log2lin( ( 16 << 7 ) - SKP_SMULWB( essStrength_Q15, + SKP_SMULWB( DE_ESSER_COEF_WB_dB_Q7, 20972 ) ) ); // 20972_Q17 = 0.16_Q0 + gain_mult_Q16 = SKP_SMULWW( gain_mult_Q16, tmp32 ); + } else { + SKP_assert( psEnc->sCmn.fs_kHz == 12 || psEnc->sCmn.fs_kHz == 8 ); + } + } + + for( k = 0; k < NB_SUBFR; k++ ) { + psEncCtrl->GainsPre_Q14[ k ] = SKP_SMULWB( gain_mult_Q16, psEncCtrl->GainsPre_Q14[ k ] ); + } + + /************************************************/ + /* Control low-frequency shaping and noise tilt */ + /************************************************/ + /* Less low frequency shaping for noisy inputs */ + strength_Q16 = SKP_MUL( LOW_FREQ_SHAPING_Q0, ( 1 << 16 ) + SKP_SMULBB( LOW_QUALITY_LOW_FREQ_SHAPING_DECR_Q1, psEncCtrl->input_quality_bands_Q15[ 0 ] - ( 1 << 15 ) ) ); + if( psEncCtrl->sCmn.sigtype == SIG_TYPE_VOICED ) { + /* Reduce low frequencies quantization noise for periodic signals, depending on pitch lag */ + /*f = 400; freqz([1, -0.98 + 2e-4 * f], [1, -0.97 + 7e-4 * f], 2^12, Fs); axis([0, 1000, -10, 1])*/ + SKP_int fs_kHz_inv = SKP_DIV32_16( 3277, psEnc->sCmn.fs_kHz ); // 0.2_Q0 = 3277_Q14 + for( k = 0; k < NB_SUBFR; k++ ) { + b_Q14 = fs_kHz_inv + SKP_DIV32_16( ( 3 << 14 ), psEncCtrl->sCmn.pitchL[ k ] ); + /* Pack two coefficients in one int32 */ + psEncCtrl->LF_shp_Q14[ k ] = SKP_LSHIFT( ( 1 << 14 ) - b_Q14 - SKP_SMULWB( strength_Q16, b_Q14 ), 16 ); + psEncCtrl->LF_shp_Q14[ k ] |= (SKP_uint16)( b_Q14 - ( 1 << 14 ) ); + } + SKP_assert( HARM_HP_NOISE_COEF_Q24 < ( 1 << 23 ) ); // Guarantees that second argument to SMULWB() is within range of an SKP_int16 + Tilt_Q16 = - HP_NOISE_COEF_Q16 - + SKP_SMULWB( ( 1 << 16 ) - HP_NOISE_COEF_Q16, SKP_SMULWB( HARM_HP_NOISE_COEF_Q24, psEnc->speech_activity_Q8 ) ); + } else { + b_Q14 = SKP_DIV32_16( 21299, psEnc->sCmn.fs_kHz ); // 1.3_Q0 = 21299_Q14 + /* Pack two coefficients in one int32 */ + psEncCtrl->LF_shp_Q14[ 0 ] = SKP_LSHIFT( ( 1 << 14 ) - b_Q14 - SKP_SMULWB( strength_Q16, SKP_SMULWB( 39322, b_Q14 ) ), 16 ); // 0.6_Q0 = 39322_Q16 + psEncCtrl->LF_shp_Q14[ 0 ] |= (SKP_uint16)( b_Q14 - ( 1 << 14 ) ); + for( k = 1; k < NB_SUBFR; k++ ) { + psEncCtrl->LF_shp_Q14[ k ] = psEncCtrl->LF_shp_Q14[ k - 1 ]; + } + Tilt_Q16 = -HP_NOISE_COEF_Q16; + } + + /****************************/ + + + + + + /* HARMONIC SHAPING CONTROL */ + /****************************/ + /* Control boosting of harmonic frequencies */ + HarmBoost_Q16 = SKP_SMULWB( SKP_SMULWB( ( 1 << 17 ) - SKP_LSHIFT( psEncCtrl->coding_quality_Q14, 3 ), + psEnc->LTPCorr_Q15 ), LOW_RATE_HARMONIC_BOOST_Q16 ); + + /* More harmonic boost for noisy input signals */ + HarmBoost_Q16 = SKP_SMLAWB( HarmBoost_Q16, + ( 1 << 16 ) - SKP_LSHIFT( psEncCtrl->input_quality_Q14, 2 ), LOW_INPUT_QUALITY_HARMONIC_BOOST_Q16 ); + + if( USE_HARM_SHAPING && psEncCtrl->sCmn.sigtype == SIG_TYPE_VOICED ) { + /* More harmonic noise shaping for high bitrates or noisy input */ + HarmShapeGain_Q16 = SKP_SMLAWB( HARMONIC_SHAPING_Q16, + ( 1 << 16 ) - SKP_SMULWB( ( 1 << 18 ) - SKP_LSHIFT( psEncCtrl->coding_quality_Q14, 4 ), + psEncCtrl->input_quality_Q14 ), HIGH_RATE_OR_LOW_QUALITY_HARMONIC_SHAPING_Q16 ); + + /* Less harmonic noise shaping for less periodic signals */ + HarmShapeGain_Q16 = SKP_SMULWB( SKP_LSHIFT( HarmShapeGain_Q16, 1 ), + SKP_Silk_SQRT_APPROX( SKP_LSHIFT( psEnc->LTPCorr_Q15, 15 ) ) ); + } else { + HarmShapeGain_Q16 = 0; + } + + /*************************/ + /* Smooth over subframes */ + /*************************/ + for( k = 0; k < NB_SUBFR; k++ ) { + psShapeSt->HarmBoost_smth_Q16 = + SKP_SMLAWB( psShapeSt->HarmBoost_smth_Q16, HarmBoost_Q16 - psShapeSt->HarmBoost_smth_Q16, SUBFR_SMTH_COEF_Q16 ); + psShapeSt->HarmShapeGain_smth_Q16 = + SKP_SMLAWB( psShapeSt->HarmShapeGain_smth_Q16, HarmShapeGain_Q16 - psShapeSt->HarmShapeGain_smth_Q16, SUBFR_SMTH_COEF_Q16 ); + psShapeSt->Tilt_smth_Q16 = + SKP_SMLAWB( psShapeSt->Tilt_smth_Q16, Tilt_Q16 - psShapeSt->Tilt_smth_Q16, SUBFR_SMTH_COEF_Q16 ); + + psEncCtrl->HarmBoost_Q14[ k ] = (SKP_int)SKP_RSHIFT_ROUND( psShapeSt->HarmBoost_smth_Q16, 2 ); + psEncCtrl->HarmShapeGain_Q14[ k ] = (SKP_int)SKP_RSHIFT_ROUND( psShapeSt->HarmShapeGain_smth_Q16, 2 ); + psEncCtrl->Tilt_Q14[ k ] = (SKP_int)SKP_RSHIFT_ROUND( psShapeSt->Tilt_smth_Q16, 2 ); + } +} + + diff --git a/libs/silk/src/SKP_Silk_perceptual_parameters_FIX.h b/libs/silk/src/SKP_Silk_perceptual_parameters_FIX.h new file mode 100644 index 0000000000..5a697b117c --- /dev/null +++ b/libs/silk/src/SKP_Silk_perceptual_parameters_FIX.h @@ -0,0 +1,142 @@ + + +/*********************************************************************** + +Copyright (c) 2006-2010, Skype Limited. All rights reserved. +Redistribution and use in source and binary forms, with or without +modification, (subject to the limitations in the disclaimer below) +are permitted provided that the following conditions are met: +- Redistributions of source code must retain the above copyright notice, +this list of conditions and the following disclaimer. +- Redistributions in binary form must reproduce the above copyright +notice, this list of conditions and the following disclaimer in the +documentation and/or other materials provided with the distribution. +- Neither the name of Skype Limited, nor the names of specific +contributors, may be used to endorse or promote products derived from +this software without specific prior written permission. +NO EXPRESS OR IMPLIED LICENSES TO ANY PARTY'S PATENT RIGHTS ARE GRANTED +BY THIS LICENSE.THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND +CONTRIBUTORS ''AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, +BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND +FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE +COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, +INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT +NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF + + + + + +USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON +ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT +(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE +OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + +***********************************************************************/ + +#ifndef SKP_SILK_PERCEPTUAL_PARAMETERS_FIX_H +#define SKP_SILK_PERCEPTUAL_PARAMETERS_FIX_H + +#ifdef __cplusplus +extern "C" +{ +#endif + +/* reduction in coding SNR during low speech activity */ +#define BG_SNR_DECR_dB_Q7 (3<<7) + +/* factor for reducing quantization noise during voiced speech */ +#define HARM_SNR_INCR_dB_Q7 (2<<7) + +/* factor for reducing quantization noise for unvoiced sparse signals */ +#define SPARSE_SNR_INCR_dB_Q7 (2<<7) + +/* threshold for sparseness measure above which to use lower quantization offset during unvoiced */ +#define SPARSENESS_THRESHOLD_QNT_OFFSET_Q8 (3<<6) // 0.75 + + +/* noise shaping filter chirp factor */ +#define BANDWIDTH_EXPANSION_Q16 61604 // 0.94 + +/* difference between chirp factors for analysis and synthesis noise shaping filters at low bitrates */ +#define LOW_RATE_BANDWIDTH_EXPANSION_DELTA_Q16 655 //0.01f + +/* factor to reduce all bandwidth expansion coefficients for super wideband, relative to wideband */ +#define SWB_BANDWIDTH_EXPANSION_REDUCTION_Q16 (1<<16) // 1.0f; + +/* gain reduction for fricatives */ +#define DE_ESSER_COEF_SWB_dB_Q7 (2 << 7) +#define DE_ESSER_COEF_WB_dB_Q7 (1 << 7) + + +/* extra harmonic boosting (signal shaping) at low bitrates */ +#define LOW_RATE_HARMONIC_BOOST_Q16 6554 // 0.1 + +/* extra harmonic boosting (signal shaping) for noisy input signals */ +#define LOW_INPUT_QUALITY_HARMONIC_BOOST_Q16 6554 // 0.1 + + + + + + +/* harmonic noise shaping */ +#define HARMONIC_SHAPING_Q16 19661 // 0.3 + +/* extra harmonic noise shaping for high bitrates or noisy input */ +#define HIGH_RATE_OR_LOW_QUALITY_HARMONIC_SHAPING_Q16 13107 // 0.2 + + +/* parameter for shaping noise towards higher frequencies */ +#define HP_NOISE_COEF_Q16 19661 // 0.3 + +/* parameter for shaping noise extra towards higher frequencies during voiced speech */ +#define HARM_HP_NOISE_COEF_Q24 7549747 // 0.45 + +/* parameter for applying a high-pass tilt to the input signal */ +#define INPUT_TILT_Q26 2684355 // 0.04 + +/* parameter for extra high-pass tilt to the input signal at high rates */ +#define HIGH_RATE_INPUT_TILT_Q12 246 // 0.06 + +/* parameter for reducing noise at the very low frequencies */ +#define LOW_FREQ_SHAPING_Q0 3 + +/* less reduction of noise at the very low frequencies for signals with low SNR at low frequencies */ +#define LOW_QUALITY_LOW_FREQ_SHAPING_DECR_Q1 1 // 0.5_Q0 + +/* fraction added to first autocorrelation value */ +#define SHAPE_WHITE_NOISE_FRACTION_Q20 50 // 50_Q20 = 4.7684e-5 + +/* fraction of first autocorrelation value added to residual energy value; limits prediction gain */ +#define SHAPE_MIN_ENERGY_RATIO_Q24 256 + +/* noise floor to put a low limit on the quantization step size */ +#define NOISE_FLOOR_dB_Q7 (4 << 7) + +/* noise floor relative to active speech gain level */ +#define RELATIVE_MIN_GAIN_dB_Q7 -6400 // -50_Q0 = -6400_Q7 + +/* subframe smoothing coefficient for determining active speech gain level (lower -> more smoothing) */ +#define GAIN_SMOOTHING_COEF_Q10 1 // 1e-3_Q0 = 1.024_Q10 + +/* subframe smoothing coefficient for HarmBoost, HarmShapeGain, Tilt (lower -> more smoothing) */ +#define SUBFR_SMTH_COEF_Q16 26214 // 0.4 + +#define NOISE_GAIN_VL_Q16 7864 +#define NOISE_GAIN_VH_Q16 7864 +#define NOISE_GAIN_UVL_Q16 6554 +#define NOISE_GAIN_UVH_Q16 9830 + + + + + + +#ifdef __cplusplus +} +#endif + +#endif //SKP_SILK_PERCEPTUAL_PARAMETERS_FIX_H + + diff --git a/libs/silk/src/SKP_Silk_pitch_analysis_core.c b/libs/silk/src/SKP_Silk_pitch_analysis_core.c new file mode 100644 index 0000000000..f102e17aef --- /dev/null +++ b/libs/silk/src/SKP_Silk_pitch_analysis_core.c @@ -0,0 +1,840 @@ + + +/*********************************************************************** + +Copyright (c) 2006-2010, Skype Limited. All rights reserved. +Redistribution and use in source and binary forms, with or without +modification, (subject to the limitations in the disclaimer below) +are permitted provided that the following conditions are met: +- Redistributions of source code must retain the above copyright notice, +this list of conditions and the following disclaimer. +- Redistributions in binary form must reproduce the above copyright +notice, this list of conditions and the following disclaimer in the +documentation and/or other materials provided with the distribution. +- Neither the name of Skype Limited, nor the names of specific +contributors, may be used to endorse or promote products derived from +this software without specific prior written permission. +NO EXPRESS OR IMPLIED LICENSES TO ANY PARTY'S PATENT RIGHTS ARE GRANTED +BY THIS LICENSE.THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND +CONTRIBUTORS ''AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, +BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND +FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE +COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, +INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT +NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF +USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON +ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT +(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE +OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + +***********************************************************************/ + +/*********************************************************** +* Pitch analyser function +********************************************************** */ +#include "SKP_Silk_SigProc_FIX.h" +#include "SKP_Silk_pitch_est_defines.h" +#include "SKP_Silk_resample_rom.h" + +#define SCRATCH_SIZE 22 + + + + + + +/************************************************************/ +/* Internally used functions */ +/************************************************************/ +void SKP_FIX_P_Ana_calc_corr_st3( + SKP_int32 cross_corr_st3[PITCH_EST_NB_SUBFR][PITCH_EST_NB_CBKS_STAGE3_MAX][PITCH_EST_NB_STAGE3_LAGS],/* (O) 3 DIM correlation array */ + const SKP_int16 signal[], /* I vector to correlate */ + SKP_int start_lag, /* I lag offset to search around */ + SKP_int sf_length, /* I length of a 5 ms subframe */ + SKP_int complexity /* I Complexity setting */ +); + +void SKP_FIX_P_Ana_calc_energy_st3( + SKP_int32 energies_st3[PITCH_EST_NB_SUBFR][PITCH_EST_NB_CBKS_STAGE3_MAX][PITCH_EST_NB_STAGE3_LAGS],/* (O) 3 DIM energy array */ + const SKP_int16 signal[], /* I vector to calc energy in */ + SKP_int start_lag, /* I lag offset to search around */ + SKP_int sf_length, /* I length of one 5 ms subframe */ + SKP_int complexity /* I Complexity setting */ +); + +SKP_int32 SKP_FIX_P_Ana_find_scaling( + const SKP_int16 *signal, + const SKP_int signal_length, + const SKP_int sum_sqr_len +); + +void SKP_Silk_decode_pitch( + SKP_int lagIndex, /* I */ + SKP_int contourIndex, /* O */ + SKP_int pitch_lags[], /* O 4 pitch values */ + SKP_int Fs_kHz /* I sampling frequency (kHz) */ +) +{ + SKP_int lag, i, min_lag; + + min_lag = SKP_SMULBB( PITCH_EST_MIN_LAG_MS, Fs_kHz ); + + /* Only for 24 / 16 kHz version for now */ + lag = min_lag + lagIndex; + if( Fs_kHz == 8 ) { + /* Only a small codebook for 8 khz */ + for( i = 0; i < PITCH_EST_NB_SUBFR; i++ ) { + pitch_lags[ i ] = lag + SKP_Silk_CB_lags_stage2[ i ][ contourIndex ]; + } + } else { + for( i = 0; i < PITCH_EST_NB_SUBFR; i++ ) { + pitch_lags[ i ] = lag + SKP_Silk_CB_lags_stage3[ i ][ contourIndex ]; + } + } + + + + + +} + +/*************************************************************/ +/* FIXED POINT CORE PITCH ANALYSIS FUNCTION */ +/*************************************************************/ +SKP_int SKP_Silk_pitch_analysis_core( /* O Voicing estimate: 0 voiced, 1 unvoiced */ + const SKP_int16 *signal, /* I Signal of length PITCH_EST_FRAME_LENGTH_MS*Fs_kHz */ + SKP_int *pitch_out, /* O 4 pitch lag values */ + SKP_int *lagIndex, /* O Lag Index */ + SKP_int *contourIndex, /* O Pitch contour Index */ + SKP_int *LTPCorr_Q15, /* I/O Normalized correlation; input: value from previous frame */ + SKP_int prevLag, /* I Last lag of previous frame; set to zero is unvoiced */ + const SKP_int32 search_thres1_Q16, /* I First stage threshold for lag candidates 0 - 1 */ + const SKP_int search_thres2_Q15, /* I Final threshold for lag candidates 0 - 1 */ + const SKP_int Fs_kHz, /* I Sample frequency (kHz) */ + const SKP_int complexity /* I Complexity setting, 0-2, where 2 is highest */ +) +{ + SKP_int16 signal_8kHz[ PITCH_EST_MAX_FRAME_LENGTH_ST_2 ]; + SKP_int16 signal_4kHz[ PITCH_EST_MAX_FRAME_LENGTH_ST_1 ]; + SKP_int32 scratch_mem[ 3 * PITCH_EST_MAX_FRAME_LENGTH ]; + SKP_int16 *input_signal_ptr; + SKP_int32 filt_state[ PITCH_EST_MAX_DECIMATE_STATE_LENGTH ]; + SKP_int i, k, d, j; + SKP_int16 C[ PITCH_EST_NB_SUBFR ][ ( PITCH_EST_MAX_LAG >> 1 ) + 5 ]; + const SKP_int16 *target_ptr, *basis_ptr; + SKP_int32 cross_corr, normalizer, energy, shift, energy_basis, energy_target; + SKP_int d_srch[ PITCH_EST_D_SRCH_LENGTH ]; + SKP_int16 d_comp[ ( PITCH_EST_MAX_LAG >> 1 ) + 5 ]; + SKP_int Cmax, length_d_srch, length_d_comp; + SKP_int32 sum, threshold, temp32; + SKP_int CBimax, CBimax_new, CBimax_old, lag, start_lag, end_lag, lag_new; + SKP_int32 CC[ PITCH_EST_NB_CBKS_STAGE2_EXT ], CCmax, CCmax_b, CCmax_new_b, CCmax_new; + SKP_int32 energies_st3[ PITCH_EST_NB_SUBFR ][ PITCH_EST_NB_CBKS_STAGE3_MAX ][ PITCH_EST_NB_STAGE3_LAGS ]; + SKP_int32 crosscorr_st3[ PITCH_EST_NB_SUBFR ][ PITCH_EST_NB_CBKS_STAGE3_MAX ][ PITCH_EST_NB_STAGE3_LAGS ]; + SKP_int32 lag_counter; + SKP_int frame_length, frame_length_8kHz, frame_length_4kHz, max_sum_sq_length; + SKP_int sf_length, sf_length_8kHz, sf_length_4kHz; + SKP_int min_lag, min_lag_8kHz, min_lag_4kHz; + SKP_int max_lag, max_lag_8kHz, max_lag_4kHz; + SKP_int32 contour_bias, diff; + SKP_int32 lz, lshift; + SKP_int cbk_offset, cbk_size, nb_cbks_stage2; + SKP_int32 delta_lag_log2_sqr_Q7, lag_log2_Q7, prevLag_log2_Q7, prev_lag_bias_Q15, corr_thres_Q15; + + /* Check for valid sampling frequency */ + SKP_assert( Fs_kHz == 8 || Fs_kHz == 12 || Fs_kHz == 16 || Fs_kHz == 24 ); + + + + + + + /* Check for valid complexity setting */ + SKP_assert( complexity >= SigProc_PITCH_EST_MIN_COMPLEX ); + SKP_assert( complexity <= SigProc_PITCH_EST_MAX_COMPLEX ); + + SKP_assert( search_thres1_Q16 >= 0 && search_thres1_Q16 <= (1<<16) ); + SKP_assert( search_thres2_Q15 >= 0 && search_thres2_Q15 <= (1<<15) ); + + /* Setup frame lengths max / min lag for the sampling frequency */ + frame_length = PITCH_EST_FRAME_LENGTH_MS * Fs_kHz; + frame_length_4kHz = PITCH_EST_FRAME_LENGTH_MS * 4; + frame_length_8kHz = PITCH_EST_FRAME_LENGTH_MS * 8; + sf_length = SKP_RSHIFT( frame_length, 3 ); + sf_length_4kHz = SKP_RSHIFT( frame_length_4kHz, 3 ); + sf_length_8kHz = SKP_RSHIFT( frame_length_8kHz, 3 ); + min_lag = PITCH_EST_MIN_LAG_MS * Fs_kHz; + min_lag_4kHz = PITCH_EST_MIN_LAG_MS * 4; + min_lag_8kHz = PITCH_EST_MIN_LAG_MS * 8; + max_lag = PITCH_EST_MAX_LAG_MS * Fs_kHz; + max_lag_4kHz = PITCH_EST_MAX_LAG_MS * 4; + max_lag_8kHz = PITCH_EST_MAX_LAG_MS * 8; + + SKP_memset( C, 0, sizeof( SKP_int16 ) * PITCH_EST_NB_SUBFR * ( ( PITCH_EST_MAX_LAG >> 1 ) + 5) ); + + /* Resample from input sampled at Fs_kHz to 8 kHz */ + if( Fs_kHz == 12 ) { + SKP_int16 R23[ SigProc_Resample_2_3_coarsest_NUM_FIR_COEFS - 1 ]; + SKP_memset( R23, 0, ( SigProc_Resample_2_3_coarsest_NUM_FIR_COEFS - 1 ) * sizeof( SKP_int16 ) ); + + SKP_Silk_resample_2_3_coarsest( signal_8kHz, R23, signal, + PITCH_EST_FRAME_LENGTH_MS * 12, (SKP_int16*)scratch_mem ); + } else if( Fs_kHz == 16 ) { + if( complexity == SigProc_PITCH_EST_MAX_COMPLEX ) { + SKP_assert( 4 <= PITCH_EST_MAX_DECIMATE_STATE_LENGTH ); + SKP_memset( filt_state, 0, 4 * sizeof( SKP_int32 ) ); + + SKP_Silk_resample_1_2_coarse( signal, filt_state, signal_8kHz, + scratch_mem, frame_length_8kHz ); + } else { + SKP_assert( 2 <= PITCH_EST_MAX_DECIMATE_STATE_LENGTH ); + SKP_memset( filt_state, 0, 2 * sizeof( SKP_int32 ) ); + + SKP_Silk_resample_1_2_coarsest( signal, filt_state, signal_8kHz, + scratch_mem, frame_length_8kHz ); + } + } else if( Fs_kHz == 24 ) { + /* Resample to 24 -> 8 khz */ + SKP_assert( 7 <= PITCH_EST_MAX_DECIMATE_STATE_LENGTH ); + SKP_memset( filt_state, 0, 7 * sizeof( SKP_int32 ) ); + + + + + + SKP_Silk_resample_1_3( signal_8kHz, filt_state, signal, 24 * PITCH_EST_FRAME_LENGTH_MS ); + + } else { + SKP_assert( Fs_kHz == 8 ); + SKP_memcpy( signal_8kHz, signal, frame_length_8kHz * sizeof( SKP_int16 ) ); + } + + /* Decimate again to 4 kHz. Set mem to zero */ + if( complexity == SigProc_PITCH_EST_MAX_COMPLEX ) { + SKP_assert( 4 <= PITCH_EST_MAX_DECIMATE_STATE_LENGTH ); + SKP_memset( filt_state, 0, 4 * sizeof( SKP_int32 ) ); + SKP_Silk_resample_1_2_coarse( signal_8kHz, filt_state, + signal_4kHz, scratch_mem, frame_length_4kHz ); + } else { + SKP_assert( 2 <= PITCH_EST_MAX_DECIMATE_STATE_LENGTH ); + SKP_memset( filt_state, 0, 2 * sizeof( SKP_int32 ) ); + SKP_Silk_resample_1_2_coarsest( signal_8kHz, filt_state, + signal_4kHz, scratch_mem, frame_length_4kHz ); + } + + /* Low-pass filter */ + for( i = frame_length_4kHz - 1; i > 0; i-- ) { + signal_4kHz[ i ] = SKP_ADD_SAT16( signal_4kHz[ i ], signal_4kHz[ i - 1 ] ); + } + + /******************************************************************************* + ** Scale 4 kHz signal down to prevent correlations measures from overflowing + ** find scaling as max scaling for each 8kHz(?) subframe + *******************************************************************************/ + + /* Inner product is calculated with different lengths, so scale for the worst case */ + max_sum_sq_length = SKP_max_32( sf_length_8kHz, SKP_RSHIFT( frame_length_4kHz, 1 ) ); + shift = SKP_FIX_P_Ana_find_scaling( signal_4kHz, frame_length_4kHz, max_sum_sq_length ); + if( shift > 0 ) { + for( i = 0; i < frame_length_4kHz; i++ ) { + signal_4kHz[ i ] = SKP_RSHIFT( signal_4kHz[ i ], shift ); + } + } + + /****************************************************************************** + * FIRST STAGE, operating in 4 khz + ******************************************************************************/ + target_ptr = &signal_4kHz[ SKP_RSHIFT( frame_length_4kHz, 1 ) ]; + for( k = 0; k < 2; k++ ) { + /* Check that we are within range of the array */ + SKP_assert( target_ptr >= signal_4kHz ); + SKP_assert( target_ptr + sf_length_8kHz <= signal_4kHz + frame_length_4kHz ); + + + + + + + basis_ptr = target_ptr - min_lag_4kHz; + + /* Check that we are within range of the array */ + SKP_assert( basis_ptr >= signal_4kHz ); + SKP_assert( basis_ptr + sf_length_8kHz <= signal_4kHz + frame_length_4kHz ); + + normalizer = 0; + cross_corr = 0; + /* Calculate first vector products before loop */ + cross_corr = SKP_Silk_inner_prod_aligned( target_ptr, basis_ptr, sf_length_8kHz ); + normalizer = SKP_Silk_inner_prod_aligned( basis_ptr, basis_ptr, sf_length_8kHz ); + normalizer = SKP_ADD_SAT32( normalizer, 1000 ); + + temp32 = SKP_DIV32( cross_corr, SKP_Silk_SQRT_APPROX( normalizer ) + 1 ); + C[ k ][ min_lag_4kHz ] = (SKP_int16)SKP_SAT16( temp32 ); /* Q0 */ + + /* From now on normalizer is computed recursively */ + for( d = min_lag_4kHz + 1; d <= max_lag_4kHz; d++ ) { + basis_ptr--; + + /* Check that we are within range of the array */ + SKP_assert( basis_ptr >= signal_4kHz ); + SKP_assert( basis_ptr + sf_length_8kHz <= signal_4kHz + frame_length_4kHz ); + + cross_corr = SKP_Silk_inner_prod_aligned( target_ptr, basis_ptr, sf_length_8kHz ); + + /* Add contribution of new sample and remove contribution from oldest sample */ + normalizer += + SKP_SMULBB( basis_ptr[ 0 ], basis_ptr[ 0 ] ) - + SKP_SMULBB( basis_ptr[ sf_length_8kHz ], basis_ptr[ sf_length_8kHz ] ); + + temp32 = SKP_DIV32( cross_corr, SKP_Silk_SQRT_APPROX( normalizer ) + 1 ); + C[ k ][ d ] = (SKP_int16)SKP_SAT16( temp32 ); /* Q0 */ + } + /* Update target pointer */ + target_ptr += sf_length_8kHz; + } + + /* Combine two subframes into single correlation measure and apply short-lag bias */ + for( i = max_lag_4kHz; i >= min_lag_4kHz; i-- ) { + sum = (SKP_int32)C[ 0 ][ i ] + (SKP_int32)C[ 1 ][ i ]; /* Q0 */ + SKP_assert( SKP_RSHIFT( sum, 1 ) == SKP_SAT16( SKP_RSHIFT( sum, 1 ) ) ); + sum = SKP_RSHIFT( sum, 1 ); /* Q-1 */ + SKP_assert( SKP_LSHIFT( (SKP_int32)-i, 4 ) == SKP_SAT16( SKP_LSHIFT( (SKP_int32)-i, 4 ) ) ); + sum = SKP_SMLAWB( sum, sum, SKP_LSHIFT( -i, 4 ) ); /* Q-1 */ + SKP_assert( sum == SKP_SAT16( sum ) ); + C[ 0 ][ i ] = (SKP_int16)sum; /* Q-1 */ + } + + + + + + /* Sort */ + length_d_srch = 5 + complexity; + SKP_assert( length_d_srch <= PITCH_EST_D_SRCH_LENGTH ); + SKP_Silk_insertion_sort_decreasing_int16( &C[ 0 ][ min_lag_4kHz ], d_srch, max_lag_4kHz - min_lag_4kHz + 1, length_d_srch ); + + /* Escape if correlation is very low already here */ + target_ptr = &signal_4kHz[ SKP_RSHIFT( frame_length_4kHz, 1 ) ]; + energy = SKP_Silk_inner_prod_aligned( target_ptr, target_ptr, SKP_RSHIFT( frame_length_4kHz, 1 ) ); + energy = SKP_ADD_SAT32( energy, 1000 ); /* Q0 */ + Cmax = (SKP_int)C[ 0 ][ min_lag_4kHz ]; /* Q-1 */ + threshold = SKP_SMULBB( Cmax, Cmax ); /* Q-2 */ + /* Compare in Q-2 domain */ + if( SKP_RSHIFT( energy, 4 + 2 ) > threshold ) { + SKP_memset( pitch_out, 0, PITCH_EST_NB_SUBFR * sizeof( SKP_int ) ); + *LTPCorr_Q15 = 0; + *lagIndex = 0; + *contourIndex = 0; + return 1; + } + + threshold = SKP_SMULWB( search_thres1_Q16, Cmax ); + for( i = 0; i < length_d_srch; i++ ) { + /* Convert to 8 kHz indices for the sorted correlation that exceeds the threshold */ + if( C[ 0 ][ min_lag_4kHz + i ] > threshold ) { + d_srch[ i ] = SKP_LSHIFT( d_srch[ i ] + min_lag_4kHz, 1 ); + } else { + length_d_srch = i; + break; + } + } + SKP_assert( length_d_srch > 0 ); + + for( i = min_lag_8kHz - 5; i < max_lag_8kHz + 5; i++ ) { + d_comp[ i ] = 0; + } + for( i = 0; i < length_d_srch; i++ ) { + d_comp[ d_srch[ i ] ] = 1; + } + + /* Convolution */ + for( i = max_lag_8kHz + 3; i >= min_lag_8kHz; i-- ) { + d_comp[ i ] += d_comp[ i - 1 ] + d_comp[ i - 2 ]; + } + + length_d_srch = 0; + for( i = min_lag_8kHz; i < max_lag_8kHz + 1; i++ ) { + if( d_comp[ i + 1 ] > 0 ) { + d_srch[ length_d_srch ] = i; + + + + + + length_d_srch++; + } + } + + /* Convolution */ + for( i = max_lag_8kHz + 3; i >= min_lag_8kHz; i-- ) { + d_comp[ i ] += d_comp[ i - 1 ] + d_comp[ i - 2 ] + d_comp[ i - 3 ]; + } + + length_d_comp = 0; + for( i = min_lag_8kHz; i < max_lag_8kHz + 4; i++ ) { + if( d_comp[ i ] > 0 ) { + d_comp[ length_d_comp ] = i - 2; + length_d_comp++; + } + } + + /********************************************************************************** + ** SECOND STAGE, operating at 8 kHz, on lag sections with high correlation + *************************************************************************************/ + + /****************************************************************************** + ** Scale signal down to avoid correlations measures from overflowing + *******************************************************************************/ + /* find scaling as max scaling for each subframe */ + shift = SKP_FIX_P_Ana_find_scaling( signal_8kHz, frame_length_8kHz, sf_length_8kHz ); + if( shift > 0 ) { + for( i = 0; i < frame_length_8kHz; i++ ) { + signal_8kHz[ i ] = SKP_RSHIFT( signal_8kHz[ i ], shift ); + } + } + + /********************************************************************************* + * Find energy of each subframe projected onto its history, for a range of delays + *********************************************************************************/ + SKP_memset( C, 0, PITCH_EST_NB_SUBFR * ( ( PITCH_EST_MAX_LAG >> 1 ) + 5 ) * sizeof( SKP_int16 ) ); + + target_ptr = &signal_8kHz[ frame_length_4kHz ]; /* point to middle of frame */ + for( k = 0; k < PITCH_EST_NB_SUBFR; k++ ) { + + /* Check that we are within range of the array */ + SKP_assert( target_ptr >= signal_8kHz ); + SKP_assert( target_ptr + sf_length_8kHz <= signal_8kHz + frame_length_8kHz ); + + energy_target = SKP_Silk_inner_prod_aligned( target_ptr, target_ptr, sf_length_8kHz ); + // ToDo: Calculate 1 / energy_target here and save one division inside next for loop + for( j = 0; j < length_d_comp; j++ ) { + d = d_comp[ j ]; + + + + + + basis_ptr = target_ptr - d; + + /* Check that we are within range of the array */ + SKP_assert( basis_ptr >= signal_8kHz ); + SKP_assert( basis_ptr + sf_length_8kHz <= signal_8kHz + frame_length_8kHz ); + + cross_corr = SKP_Silk_inner_prod_aligned( target_ptr, basis_ptr, sf_length_8kHz ); + energy_basis = SKP_Silk_inner_prod_aligned( basis_ptr, basis_ptr, sf_length_8kHz ); + if( cross_corr > 0 ) { + energy = SKP_max( energy_target, energy_basis ); /* Find max to make sure first division < 1.0 */ + lz = SKP_Silk_CLZ32( cross_corr ); + lshift = SKP_LIMIT( lz - 1, 0, 15 ); + temp32 = SKP_DIV32( SKP_LSHIFT( cross_corr, lshift ), SKP_RSHIFT( energy, 15 - lshift ) + 1 ); /* Q15 */ + SKP_assert( temp32 == SKP_SAT16( temp32 ) ); + temp32 = SKP_SMULWB( cross_corr, temp32 ); /* Q(-1), cc * ( cc / max(b, t) ) */ + temp32 = SKP_ADD_SAT32( temp32, temp32 ); /* Q(0) */ + lz = SKP_Silk_CLZ32( temp32 ); + lshift = SKP_LIMIT( lz - 1, 0, 15 ); + energy = SKP_min( energy_target, energy_basis ); + C[ k ][ d ] = SKP_DIV32( SKP_LSHIFT( temp32, lshift ), SKP_RSHIFT( energy, 15 - lshift ) + 1 ); // Q15 + } else { + C[ k ][ d ] = 0; + } + } + target_ptr += sf_length_8kHz; + } + + /* search over lag range and lags codebook */ + /* scale factor for lag codebook, as a function of center lag */ + + CCmax = SKP_int32_MIN; + CCmax_b = SKP_int32_MIN; + + CBimax = 0; /* To avoid returning undefined lag values */ + lag = -1; /* To check if lag with strong enough correlation has been found */ + + if( prevLag > 0 ) { + if( Fs_kHz == 12 ) { + prevLag = SKP_DIV32_16( SKP_LSHIFT( prevLag, 1 ), 3 ); + } else if( Fs_kHz == 16 ) { + prevLag = SKP_RSHIFT( prevLag, 1 ); + } else if( Fs_kHz == 24 ) { + prevLag = SKP_DIV32_16( prevLag, 3 ); + } + prevLag_log2_Q7 = SKP_Silk_lin2log( (SKP_int32)prevLag ); + } else { + prevLag_log2_Q7 = 0; + } + + + + + + SKP_assert( search_thres2_Q15 == SKP_SAT16( search_thres2_Q15 ) ); + corr_thres_Q15 = SKP_RSHIFT( SKP_SMULBB( search_thres2_Q15, search_thres2_Q15 ), 13 ); + + /* If input is 8 khz use a larger codebook here because it is last stage */ + if( Fs_kHz == 8 && complexity > SigProc_PITCH_EST_MIN_COMPLEX ) { + nb_cbks_stage2 = PITCH_EST_NB_CBKS_STAGE2_EXT; + } else { + nb_cbks_stage2 = PITCH_EST_NB_CBKS_STAGE2; + } + + for( k = 0; k < length_d_srch; k++ ) { + d = d_srch[ k ]; + for( j = 0; j < nb_cbks_stage2; j++ ) { + CC[ j ] = 0; + for( i = 0; i < PITCH_EST_NB_SUBFR; i++ ) { + /* Try all codebooks */ + CC[ j ] = CC[ j ] + (SKP_int32)C[ i ][ d + SKP_Silk_CB_lags_stage2[ i ][ j ] ]; + } + } + /* Find best codebook */ + CCmax_new = SKP_int32_MIN; + CBimax_new = 0; + for( i = 0; i < nb_cbks_stage2; i++ ) { + if( CC[ i ] > CCmax_new ) { + CCmax_new = CC[ i ]; + CBimax_new = i; + } + } + + /* Bias towards shorter lags */ + lag_log2_Q7 = SKP_Silk_lin2log( (SKP_int32)d ); /* Q7 */ + SKP_assert( lag_log2_Q7 == SKP_SAT16( lag_log2_Q7 ) ); + SKP_assert( PITCH_EST_NB_SUBFR * PITCH_EST_SHORTLAG_BIAS_Q15 == SKP_SAT16( PITCH_EST_NB_SUBFR * PITCH_EST_SHORTLAG_BIAS_Q15 ) ); + CCmax_new_b = CCmax_new - SKP_RSHIFT( SKP_SMULBB( PITCH_EST_NB_SUBFR * PITCH_EST_SHORTLAG_BIAS_Q15, lag_log2_Q7 ), 7 ); /* Q15 */ + + /* Bias towards previous lag */ + SKP_assert( PITCH_EST_NB_SUBFR * PITCH_EST_PREVLAG_BIAS_Q15 == SKP_SAT16( PITCH_EST_NB_SUBFR * PITCH_EST_PREVLAG_BIAS_Q15 ) ); + if( prevLag > 0 ) { + delta_lag_log2_sqr_Q7 = lag_log2_Q7 - prevLag_log2_Q7; + SKP_assert( delta_lag_log2_sqr_Q7 == SKP_SAT16( delta_lag_log2_sqr_Q7 ) ); + delta_lag_log2_sqr_Q7 = SKP_RSHIFT( SKP_SMULBB( delta_lag_log2_sqr_Q7, delta_lag_log2_sqr_Q7 ), 7 ); + prev_lag_bias_Q15 = SKP_RSHIFT( SKP_SMULBB( PITCH_EST_NB_SUBFR * PITCH_EST_PREVLAG_BIAS_Q15, ( *LTPCorr_Q15 ) ), 15 ); /* Q15 */ + prev_lag_bias_Q15 = SKP_DIV32( SKP_MUL( prev_lag_bias_Q15, delta_lag_log2_sqr_Q7 ), delta_lag_log2_sqr_Q7 + ( 1 << 6 ) ); + CCmax_new_b -= prev_lag_bias_Q15; /* Q15 */ + } + + if( CCmax_new_b > CCmax_b && CCmax_new > corr_thres_Q15 ) { + CCmax_b = CCmax_new_b; + + + + + + CCmax = CCmax_new; + lag = d; + CBimax = CBimax_new; + } + } + + if( lag == -1 ) { + /* No suitable candidate found */ + SKP_memset( pitch_out, 0, PITCH_EST_NB_SUBFR * sizeof( SKP_int ) ); + *LTPCorr_Q15 = 0; + *lagIndex = 0; + *contourIndex = 0; + return 1; + } + + if( Fs_kHz > 8 ) { + + /****************************************************************************** + ** Scale input signal down to avoid correlations measures from overflowing + *******************************************************************************/ + /* find scaling as max scaling for each subframe */ + shift = SKP_FIX_P_Ana_find_scaling( signal, frame_length, sf_length ); + if( shift > 0 ) { + /* Move signal to scratch mem because the input signal should be unchanged */ + /* Reuse the 32 bit scratch mem vector, use a 16 bit pointer from now */ + input_signal_ptr = (SKP_int16*)scratch_mem; + for( i = 0; i < frame_length; i++ ) { + input_signal_ptr[ i ] = SKP_RSHIFT( signal[ i ], shift ); + } + } else { + input_signal_ptr = (SKP_int16*)signal; + } + /*********************************************************************************/ + + /* Search in original signal */ + + CBimax_old = CBimax; + /* Compensate for decimation */ + SKP_assert( lag == SKP_SAT16( lag ) ); + if( Fs_kHz == 12 ) { + lag = SKP_RSHIFT( SKP_SMULBB( lag, 3 ), 1 ); + } else if( Fs_kHz == 16 ) { + lag = SKP_LSHIFT( lag, 1 ); + } else { + lag = SKP_SMULBB( lag, 3 ); + } + + lag = SKP_LIMIT( lag, min_lag, max_lag ); + + + + + + start_lag = SKP_max_int( lag - 2, min_lag ); + end_lag = SKP_min_int( lag + 2, max_lag ); + lag_new = lag; /* to avoid undefined lag */ + CBimax = 0; /* to avoid undefined lag */ + SKP_assert( SKP_LSHIFT( CCmax, 13 ) >= 0 ); + *LTPCorr_Q15 = (SKP_int)SKP_Silk_SQRT_APPROX( SKP_LSHIFT( CCmax, 13 ) ); /* Output normalized correlation */ + + CCmax = SKP_int32_MIN; + /* pitch lags according to second stage */ + for( k = 0; k < PITCH_EST_NB_SUBFR; k++ ) { + pitch_out[ k ] = lag + 2 * SKP_Silk_CB_lags_stage2[ k ][ CBimax_old ]; + } + /* Calculate the correlations and energies needed in stage 3 */ + SKP_FIX_P_Ana_calc_corr_st3( crosscorr_st3, input_signal_ptr, start_lag, sf_length, complexity ); + SKP_FIX_P_Ana_calc_energy_st3( energies_st3, input_signal_ptr, start_lag, sf_length, complexity ); + + lag_counter = 0; + SKP_assert( lag == SKP_SAT16( lag ) ); + contour_bias = SKP_DIV32_16( PITCH_EST_FLATCONTOUR_BIAS_Q20, lag ); + + /* Setup cbk parameters acording to complexity setting */ + cbk_size = (SKP_int)SKP_Silk_cbk_sizes_stage3[ complexity ]; + cbk_offset = (SKP_int)SKP_Silk_cbk_offsets_stage3[ complexity ]; + + for( d = start_lag; d <= end_lag; d++ ) { + for( j = cbk_offset; j < ( cbk_offset + cbk_size ); j++ ) { + cross_corr = 0; + energy = 0; + for( k = 0; k < PITCH_EST_NB_SUBFR; k++ ) { + SKP_assert( PITCH_EST_NB_SUBFR == 4 ); + energy += SKP_RSHIFT( energies_st3[ k ][ j ][ lag_counter ], 2 ); /* use mean, to avoid overflow */ + SKP_assert( energy >= 0 ); + cross_corr += SKP_RSHIFT( crosscorr_st3[ k ][ j ][ lag_counter ], 2 ); /* use mean, to avoid overflow */ + } + if( cross_corr > 0 ) { + /* Divide cross_corr / energy and get result in Q15 */ + lz = SKP_Silk_CLZ32( cross_corr ); + /* Divide with result in Q13, cross_corr could be larger than energy */ + lshift = SKP_LIMIT( lz - 1, 0, 13 ); + CCmax_new = SKP_DIV32( SKP_LSHIFT( cross_corr, lshift ), SKP_RSHIFT( energy, 13 - lshift ) + 1 ); + CCmax_new = SKP_SAT16( CCmax_new ); + CCmax_new = SKP_SMULWB( cross_corr, CCmax_new ); + /* Saturate */ + if( CCmax_new > SKP_RSHIFT( SKP_int32_MAX, 3 ) ) { + CCmax_new = SKP_int32_MAX; + } else { + CCmax_new = SKP_LSHIFT( CCmax_new, 3 ); + } + + + + + + /* Reduce depending on flatness of contour */ + diff = j - SKP_RSHIFT( PITCH_EST_NB_CBKS_STAGE3_MAX, 1 ); + diff = SKP_MUL( diff, diff ); + diff = SKP_int16_MAX - SKP_RSHIFT( SKP_MUL( contour_bias, diff ), 5 ); /* Q20 -> Q15 */ + SKP_assert( diff == SKP_SAT16( diff ) ); + CCmax_new = SKP_LSHIFT( SKP_SMULWB( CCmax_new, diff ), 1 ); + } else { + CCmax_new = 0; + } + + if( CCmax_new > CCmax ) { + CCmax = CCmax_new; + lag_new = d; + CBimax = j; + } + } + lag_counter++; + } + + for( k = 0; k < PITCH_EST_NB_SUBFR; k++ ) { + pitch_out[ k ] = lag_new + SKP_Silk_CB_lags_stage3[ k ][ CBimax ]; + } + *lagIndex = lag_new - min_lag; + *contourIndex = CBimax; + } else { + /* Save Lags and correlation */ + CCmax = SKP_max( CCmax, 0 ); + *LTPCorr_Q15 = (SKP_int)SKP_Silk_SQRT_APPROX( SKP_LSHIFT( CCmax, 13 ) ); /* Output normalized correlation */ + for( k = 0; k < PITCH_EST_NB_SUBFR; k++ ) { + pitch_out[ k ] = lag + SKP_Silk_CB_lags_stage2[ k ][ CBimax ]; + } + *lagIndex = lag - min_lag_8kHz; + *contourIndex = CBimax; + } + SKP_assert( *lagIndex >= 0 ); + /* return as voiced */ + return 0; +} + +/*************************************************************************/ +/* Calculates the correlations used in stage 3 search. In order to cover */ +/* the whole lag codebook for all the searched offset lags (lag +- 2), */ +/*************************************************************************/ +void SKP_FIX_P_Ana_calc_corr_st3( + SKP_int32 cross_corr_st3[ PITCH_EST_NB_SUBFR ][ PITCH_EST_NB_CBKS_STAGE3_MAX ][ PITCH_EST_NB_STAGE3_LAGS ],/* (O) 3 DIM correlation array */ + const SKP_int16 signal[], /* I vector to correlate */ + SKP_int start_lag, /* I lag offset to search around */ + SKP_int sf_length, /* I length of a 5 ms subframe */ + + + + + + SKP_int complexity /* I Complexity setting */ +) +{ + const SKP_int16 *target_ptr, *basis_ptr; + SKP_int32 cross_corr; + SKP_int i, j, k, lag_counter; + SKP_int cbk_offset, cbk_size, delta, idx; + SKP_int32 scratch_mem[ SCRATCH_SIZE ]; + + SKP_assert( complexity >= SigProc_PITCH_EST_MIN_COMPLEX ); + SKP_assert( complexity <= SigProc_PITCH_EST_MAX_COMPLEX ); + + cbk_offset = SKP_Silk_cbk_offsets_stage3[ complexity ]; + cbk_size = SKP_Silk_cbk_sizes_stage3[ complexity ]; + + target_ptr = &signal[ SKP_LSHIFT( sf_length, 2 ) ]; /* Pointer to middle of frame */ + for( k = 0; k < PITCH_EST_NB_SUBFR; k++ ) { + lag_counter = 0; + + /* Calculate the correlations for each subframe */ + for( j = SKP_Silk_Lag_range_stage3[ complexity ][ k ][ 0 ]; j <= SKP_Silk_Lag_range_stage3[ complexity ][ k ][ 1 ]; j++ ) { + basis_ptr = target_ptr - ( start_lag + j ); + cross_corr = SKP_Silk_inner_prod_aligned( (SKP_int16*)target_ptr, (SKP_int16*)basis_ptr, sf_length ); + SKP_assert( lag_counter < SCRATCH_SIZE ); + scratch_mem[ lag_counter ] = cross_corr; + lag_counter++; + } + + delta = SKP_Silk_Lag_range_stage3[ complexity ][ k ][ 0 ]; + for( i = cbk_offset; i < ( cbk_offset + cbk_size ); i++ ) { + /* Fill out the 3 dim array that stores the correlations for */ + /* each code_book vector for each start lag */ + idx = SKP_Silk_CB_lags_stage3[ k ][ i ] - delta; + for( j = 0; j < PITCH_EST_NB_STAGE3_LAGS; j++ ) { + SKP_assert( idx + j < SCRATCH_SIZE ); + SKP_assert( idx + j < lag_counter ); + cross_corr_st3[ k ][ i ][ j ] = scratch_mem[ idx + j ]; + } + } + target_ptr += sf_length; + } +} + +/********************************************************************/ +/* Calculate the energies for first two subframes. The energies are */ +/* calculated recursively. */ +/********************************************************************/ +void SKP_FIX_P_Ana_calc_energy_st3( + + + + + + SKP_int32 energies_st3[ PITCH_EST_NB_SUBFR ][ PITCH_EST_NB_CBKS_STAGE3_MAX ][ PITCH_EST_NB_STAGE3_LAGS ],/* (O) 3 DIM energy array */ + const SKP_int16 signal[], /* I vector to calc energy in */ + SKP_int start_lag, /* I lag offset to search around */ + SKP_int sf_length, /* I length of one 5 ms subframe */ + SKP_int complexity /* I Complexity setting */ +) +{ + const SKP_int16 *target_ptr, *basis_ptr; + SKP_int32 energy; + SKP_int k, i, j, lag_counter; + SKP_int cbk_offset, cbk_size, delta, idx; + SKP_int32 scratch_mem[ SCRATCH_SIZE ]; + + SKP_assert( complexity >= SigProc_PITCH_EST_MIN_COMPLEX ); + SKP_assert( complexity <= SigProc_PITCH_EST_MAX_COMPLEX ); + + cbk_offset = SKP_Silk_cbk_offsets_stage3[ complexity ]; + cbk_size = SKP_Silk_cbk_sizes_stage3[ complexity ]; + + target_ptr = &signal[ SKP_LSHIFT( sf_length, 2 ) ]; + for( k = 0; k < PITCH_EST_NB_SUBFR; k++ ) { + lag_counter = 0; + + /* Calculate the energy for first lag */ + basis_ptr = target_ptr - ( start_lag + SKP_Silk_Lag_range_stage3[ complexity ][ k ][ 0 ] ); + energy = SKP_Silk_inner_prod_aligned( basis_ptr, basis_ptr, sf_length ); + SKP_assert( energy >= 0 ); + scratch_mem[ lag_counter ] = energy; + lag_counter++; + + for( i = 1; i < ( SKP_Silk_Lag_range_stage3[ complexity ][ k ][ 1 ] - SKP_Silk_Lag_range_stage3[ complexity ][ k ][ 0 ] + 1 ); i++ ) { + /* remove part outside new window */ + energy -= SKP_SMULBB( basis_ptr[ sf_length - i ], basis_ptr[ sf_length - i ] ); + SKP_assert( energy >= 0 ); + + /* add part that comes into window */ + energy = SKP_ADD_SAT32( energy, SKP_SMULBB( basis_ptr[ -i ], basis_ptr[ -i ] ) ); + SKP_assert( energy >= 0 ); + SKP_assert( lag_counter < SCRATCH_SIZE ); + scratch_mem[ lag_counter ] = energy; + lag_counter++; + } + + delta = SKP_Silk_Lag_range_stage3[ complexity ][ k ][ 0 ]; + for( i = cbk_offset; i < ( cbk_offset + cbk_size ); i++ ) { + /* Fill out the 3 dim array that stores the correlations for */ + /* each code_book vector for each start lag */ + idx = SKP_Silk_CB_lags_stage3[ k ][ i ] - delta; + + + + + + for( j = 0; j < PITCH_EST_NB_STAGE3_LAGS; j++ ) { + SKP_assert( idx + j < SCRATCH_SIZE ); + SKP_assert( idx + j < lag_counter ); + energies_st3[ k ][ i ][ j ] = scratch_mem[ idx + j ]; + SKP_assert( energies_st3[ k ][ i ][ j ] >= 0.0f ); + } + } + target_ptr += sf_length; + } +} + +SKP_int32 SKP_FIX_P_Ana_find_scaling( + const SKP_int16 *signal, + const SKP_int signal_length, + const SKP_int sum_sqr_len +) +{ + SKP_int32 nbits, x_max; + + x_max = SKP_Silk_int16_array_maxabs( signal, signal_length ); + + if( x_max < SKP_int16_MAX ) { + /* Number of bits needed for the sum of the squares */ + nbits = 32 - SKP_Silk_CLZ32( SKP_SMULBB( x_max, x_max ) ); + } else { + /* Here we don't know if x_max should have been SKP_int16_MAX + 1, so we expect the worst case */ + nbits = 30; + } + nbits += 17 - SKP_Silk_CLZ16( sum_sqr_len ); + + /* Without a guarantee of saturation, we need to keep the 31st bit free */ + if( nbits < 31 ) { + return 0; + } else { + return( nbits - 30 ); + } +} + + + + + + + + + + + + + + + + diff --git a/libs/silk/src/SKP_Silk_pitch_est_defines.h b/libs/silk/src/SKP_Silk_pitch_est_defines.h new file mode 100644 index 0000000000..62b2e95c3e --- /dev/null +++ b/libs/silk/src/SKP_Silk_pitch_est_defines.h @@ -0,0 +1,52 @@ + + +/*********************************************************************** + +Copyright (c) 2006-2010, Skype Limited. All rights reserved. +Redistribution and use in source and binary forms, with or without +modification, (subject to the limitations in the disclaimer below) +are permitted provided that the following conditions are met: +- Redistributions of source code must retain the above copyright notice, +this list of conditions and the following disclaimer. +- Redistributions in binary form must reproduce the above copyright +notice, this list of conditions and the following disclaimer in the +documentation and/or other materials provided with the distribution. +- Neither the name of Skype Limited, nor the names of specific +contributors, may be used to endorse or promote products derived from +this software without specific prior written permission. +NO EXPRESS OR IMPLIED LICENSES TO ANY PARTY'S PATENT RIGHTS ARE GRANTED +BY THIS LICENSE.THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND +CONTRIBUTORS ''AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, +BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND +FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE +COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, +INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT +NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF +USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON +ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT +(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE +OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + +***********************************************************************/ + +#ifndef SIGPROCFIX_PITCH_EST_DEFINES_H +#define SIGPROCFIX_PITCH_EST_DEFINES_H + +#include "SKP_Silk_SigProc_FIX.h" +#include "SKP_Silk_common_pitch_est_defines.h" + +/************************************************************/ +/* Definitions For Fix pitch estimator */ +/************************************************************/ + +#define PITCH_EST_SHORTLAG_BIAS_Q15 6554 /* 0.2f. for logarithmic weighting */ +#define PITCH_EST_PREVLAG_BIAS_Q15 6554 /* Prev lag bias */ +#define PITCH_EST_FLATCONTOUR_BIAS_Q20 52429 /* 0.05f */ + +#endif + + + + + + diff --git a/libs/silk/src/SKP_Silk_pitch_est_tables.c b/libs/silk/src/SKP_Silk_pitch_est_tables.c new file mode 100644 index 0000000000..f7f0bd0162 --- /dev/null +++ b/libs/silk/src/SKP_Silk_pitch_est_tables.c @@ -0,0 +1,105 @@ + + +/*********************************************************************** + +Copyright (c) 2006-2010, Skype Limited. All rights reserved. +Redistribution and use in source and binary forms, with or without +modification, (subject to the limitations in the disclaimer below) +are permitted provided that the following conditions are met: +- Redistributions of source code must retain the above copyright notice, +this list of conditions and the following disclaimer. +- Redistributions in binary form must reproduce the above copyright +notice, this list of conditions and the following disclaimer in the +documentation and/or other materials provided with the distribution. +- Neither the name of Skype Limited, nor the names of specific +contributors, may be used to endorse or promote products derived from +this software without specific prior written permission. +NO EXPRESS OR IMPLIED LICENSES TO ANY PARTY'S PATENT RIGHTS ARE GRANTED +BY THIS LICENSE.THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND +CONTRIBUTORS ''AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, +BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND +FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE +COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, +INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT +NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF +USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON +ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT +(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE +OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + +***********************************************************************/ + +#include "SKP_Silk_typedef.h" +#include "SKP_Silk_pitch_est_defines.h" + +/********************************************************/ +/* Auto Generated File from generate_pitch_est_tables.m */ +/********************************************************/ + +const SKP_int16 SKP_Silk_CB_lags_stage2[PITCH_EST_NB_SUBFR][PITCH_EST_NB_CBKS_STAGE2_EXT] = +{ + {0, 2,-1,-1,-1, 0, 0, 1, 1, 0, 1}, + {0, 1, 0, 0, 0, 0, 0, 1, 0, 0, 0}, + {0, 0, 1, 0, 0, 0, 1, 0, 0, 0, 0}, + {0,-1, 2, 1, 0, 1, 1, 0, 0,-1,-1} +}; + +const SKP_int16 SKP_Silk_CB_lags_stage3[PITCH_EST_NB_SUBFR][PITCH_EST_NB_CBKS_STAGE3_MAX] = + + + + + +{ + {-9,-7,-6,-5,-5,-4,-4,-3,-3,-2,-2,-2,-1,-1,-1, 0, 0, 0, 1, 1, 0, 1, 2, 2, 2, 3, 3, 4, 4, 5, 6, 5, 6, 8}, + {-3,-2,-2,-2,-1,-1,-1,-1,-1, 0, 0,-1, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 1, 1, 0, 1, 1, 2, 1, 2, 2, 2, 2, 3}, + { 3, 3, 2, 2, 2, 2, 1, 2, 1, 1, 0, 1, 1, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0,-1, 0, 0,-1,-1,-1,-1,-1,-2,-2,-2}, + { 9, 8, 6, 5, 6, 5, 4, 4, 3, 3, 2, 2, 2, 1, 0, 1, 1, 0, 0, 0,-1,-1,-1,-2,-2,-2,-3,-3,-4,-4,-5,-5,-6,-7} + }; + +const SKP_int16 SKP_Silk_Lag_range_stage3[ SigProc_PITCH_EST_MAX_COMPLEX + 1 ] [ PITCH_EST_NB_SUBFR ][ 2 ] = +{ + /* Lags to search for low number of stage3 cbks */ + { + {-2,6}, + {-1,5}, + {-1,5}, + {-2,7} + }, + /* Lags to search for middle number of stage3 cbks */ + { + {-4,8}, + {-1,6}, + {-1,6}, + {-4,9} + }, + /* Lags to search for max number of stage3 cbks */ + { + {-9,12}, + {-3,7}, + {-2,7}, + {-7,13} + } +}; + +const SKP_int16 SKP_Silk_cbk_sizes_stage3[SigProc_PITCH_EST_MAX_COMPLEX + 1] = +{ + PITCH_EST_NB_CBKS_STAGE3_MIN, + PITCH_EST_NB_CBKS_STAGE3_MID, + PITCH_EST_NB_CBKS_STAGE3_MAX +}; + +const SKP_int16 SKP_Silk_cbk_offsets_stage3[SigProc_PITCH_EST_MAX_COMPLEX + 1] = +{ + ((PITCH_EST_NB_CBKS_STAGE3_MAX - PITCH_EST_NB_CBKS_STAGE3_MIN) >> 1), + ((PITCH_EST_NB_CBKS_STAGE3_MAX - PITCH_EST_NB_CBKS_STAGE3_MID) >> 1), + 0 +}; + + + + + + + + diff --git a/libs/silk/src/SKP_Silk_prefilter_FIX.c b/libs/silk/src/SKP_Silk_prefilter_FIX.c new file mode 100644 index 0000000000..7b8b446226 --- /dev/null +++ b/libs/silk/src/SKP_Silk_prefilter_FIX.c @@ -0,0 +1,187 @@ + + +/*********************************************************************** + +Copyright (c) 2006-2010, Skype Limited. All rights reserved. +Redistribution and use in source and binary forms, with or without +modification, (subject to the limitations in the disclaimer below) +are permitted provided that the following conditions are met: +- Redistributions of source code must retain the above copyright notice, +this list of conditions and the following disclaimer. +- Redistributions in binary form must reproduce the above copyright +notice, this list of conditions and the following disclaimer in the +documentation and/or other materials provided with the distribution. +- Neither the name of Skype Limited, nor the names of specific +contributors, may be used to endorse or promote products derived from +this software without specific prior written permission. +NO EXPRESS OR IMPLIED LICENSES TO ANY PARTY'S PATENT RIGHTS ARE GRANTED +BY THIS LICENSE.THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND +CONTRIBUTORS ''AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, +BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND +FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE +COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, +INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT +NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF +USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON +ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT +(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE +OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + +***********************************************************************/ + +#include "SKP_Silk_main_FIX.h" +#include "SKP_Silk_perceptual_parameters_FIX.h" + +/* SKP_Silk_prefilter. Prefilter for finding Quantizer input signal */ +SKP_INLINE void SKP_Silk_prefilt_FIX( + SKP_Silk_prefilter_state_FIX *P, /* I/O state */ + SKP_int32 st_res_Q12[], /* I short term residual signal */ + SKP_int16 xw[], /* O prefiltered signal */ + SKP_int32 HarmShapeFIRPacked_Q12, /* I Harmonic shaping coeficients */ + SKP_int Tilt_Q14, /* I Tilt shaping coeficient */ + SKP_int32 LF_shp_Q14, /* I Low-frequancy shaping coeficients*/ + SKP_int lag, /* I Lag for harmonic shaping */ + SKP_int length /* I Length of signals */ +); + +void SKP_Silk_prefilter_FIX( + + + + + + SKP_Silk_encoder_state_FIX *psEnc, /* I/O Encoder state FIX */ + const SKP_Silk_encoder_control_FIX *psEncCtrl, /* I Encoder control FIX */ + SKP_int16 xw[], /* O Weighted signal */ + const SKP_int16 x[] /* I Speech signal */ +) +{ + SKP_Silk_prefilter_state_FIX *P = &psEnc->sPrefilt; + SKP_int j, k, lag; + SKP_int32 tmp_32, B_Q12; + const SKP_int16 *AR1_shp_Q13; + const SKP_int16 *px; + SKP_int16 *pxw, *pst_res; + SKP_int HarmShapeGain_Q12, Tilt_Q14, LF_shp_Q14; + SKP_int32 HarmShapeFIRPacked_Q12; + SKP_int32 x_filt_Q12[ MAX_FRAME_LENGTH / NB_SUBFR ], filterState[ MAX_LPC_ORDER ]; + SKP_int16 st_res[ ( MAX_FRAME_LENGTH / NB_SUBFR ) + MAX_LPC_ORDER ]; + + /* Setup pointers */ + px = x; + pxw = xw; + lag = P->lagPrev; + for( k = 0; k < NB_SUBFR; k++ ) { + /* Update Variables that change per sub frame */ + if( psEncCtrl->sCmn.sigtype == SIG_TYPE_VOICED ) { + lag = psEncCtrl->sCmn.pitchL[ k ]; + } + + /* Noise shape parameters */ + HarmShapeGain_Q12 = SKP_SMULWB( psEncCtrl->HarmShapeGain_Q14[ k ], 16384 - psEncCtrl->HarmBoost_Q14[ k ] ); + SKP_assert( HarmShapeGain_Q12 >= 0 ); + HarmShapeFIRPacked_Q12 = SKP_RSHIFT( HarmShapeGain_Q12, 2 ); + HarmShapeFIRPacked_Q12 |= SKP_LSHIFT( (SKP_int32)SKP_RSHIFT( HarmShapeGain_Q12, 1 ), 16 ); + Tilt_Q14 = psEncCtrl->Tilt_Q14[ k ]; + LF_shp_Q14 = psEncCtrl->LF_shp_Q14[ k ]; + AR1_shp_Q13 = &psEncCtrl->AR1_Q13[ k * SHAPE_LPC_ORDER_MAX ]; + + /* Short term FIR filtering*/ + SKP_memset( filterState, 0, psEnc->sCmn.shapingLPCOrder * sizeof( SKP_int32 ) ); + SKP_Silk_MA_Prediction_Q13( px - psEnc->sCmn.shapingLPCOrder, AR1_shp_Q13, filterState, + st_res, psEnc->sCmn.subfr_length + psEnc->sCmn.shapingLPCOrder, psEnc->sCmn.shapingLPCOrder ); + + pst_res = st_res + psEnc->sCmn.shapingLPCOrder; /* Point to first sample */ + + /* reduce (mainly) low frequencies during harmonic emphasis */ + B_Q12 = SKP_RSHIFT_ROUND( psEncCtrl->GainsPre_Q14[ k ], 2 ); + tmp_32 = SKP_SMLABB( INPUT_TILT_Q26, psEncCtrl->HarmBoost_Q14[ k ], HarmShapeGain_Q12 ); /* Q26 */ + tmp_32 = SKP_SMLABB( tmp_32, psEncCtrl->coding_quality_Q14, HIGH_RATE_INPUT_TILT_Q12 ); /* Q26 */ + tmp_32 = SKP_SMULWB( tmp_32, -psEncCtrl->GainsPre_Q14[ k ] ); /* Q24 */ + + + + + + tmp_32 = SKP_RSHIFT_ROUND( tmp_32, 12 ); /* Q12 */ + B_Q12 |= SKP_LSHIFT( SKP_SAT16( tmp_32 ), 16 ); + + /* NOTE: the code below loads two int16 values in an int32, and multiplies each using the */ + /* SMLABB and SMLABT instructions. On a big-endian CPU the two int16 variables would be */ + /* loaded in reverse order and the code will give the wrong result. In that case swapping */ + /* the SMLABB and SMLABT instructions should solve the problem. */ + x_filt_Q12[ 0 ] = SKP_SMLABT( SKP_SMULBB( pst_res[ 0 ], B_Q12 ), P->sHarmHP, B_Q12 ); + for( j = 1; j < psEnc->sCmn.subfr_length; j++ ) { + x_filt_Q12[ j ] = SKP_SMLABT( SKP_SMULBB( pst_res[ j ], B_Q12 ), pst_res[ j - 1 ], B_Q12 ); + } + P->sHarmHP = pst_res[ psEnc->sCmn.subfr_length - 1 ]; + + SKP_Silk_prefilt_FIX( P, x_filt_Q12, pxw, HarmShapeFIRPacked_Q12, Tilt_Q14, + LF_shp_Q14, lag, psEnc->sCmn.subfr_length ); + + px += psEnc->sCmn.subfr_length; + pxw += psEnc->sCmn.subfr_length; + } + + P->lagPrev = psEncCtrl->sCmn.pitchL[ NB_SUBFR - 1 ]; +} + +/* SKP_Silk_prefilter. Prefilter for finding Quantizer input signal */ +SKP_INLINE void SKP_Silk_prefilt_FIX( + SKP_Silk_prefilter_state_FIX *P, /* I/O state */ + SKP_int32 st_res_Q12[], /* I short term residual signal */ + SKP_int16 xw[], /* O prefiltered signal */ + SKP_int32 HarmShapeFIRPacked_Q12, /* I Harmonic shaping coeficients */ + SKP_int Tilt_Q14, /* I Tilt shaping coeficient */ + SKP_int32 LF_shp_Q14, /* I Low-frequancy shaping coeficients*/ + SKP_int lag, /* I Lag for harmonic shaping */ + SKP_int length /* I Length of signals */ +) +{ + SKP_int i, idx, LTP_shp_buf_idx; + SKP_int32 n_LTP_Q12, n_Tilt_Q10, n_LF_Q10; + SKP_int32 sLF_MA_shp_Q12, sLF_AR_shp_Q12; + SKP_int16 *LTP_shp_buf; + + /* To speed up use temp variables instead of using the struct */ + LTP_shp_buf = P->sLTP_shp1; + LTP_shp_buf_idx = P->sLTP_shp_buf_idx1; + sLF_AR_shp_Q12 = P->sLF_AR_shp1_Q12; + sLF_MA_shp_Q12 = P->sLF_MA_shp1_Q12; + + for( i = 0; i < length; i++ ) { + if( lag > 0 ) { + + + + + + /* unrolled loop */ + SKP_assert( HARM_SHAPE_FIR_TAPS == 3 ); + idx = lag + LTP_shp_buf_idx; + n_LTP_Q12 = SKP_SMULBB( LTP_shp_buf[ ( idx - HARM_SHAPE_FIR_TAPS / 2 - 1) & LTP_MASK ], HarmShapeFIRPacked_Q12 ); + n_LTP_Q12 = SKP_SMLABT( n_LTP_Q12, LTP_shp_buf[ ( idx - HARM_SHAPE_FIR_TAPS / 2 ) & LTP_MASK ], HarmShapeFIRPacked_Q12 ); + n_LTP_Q12 = SKP_SMLABB( n_LTP_Q12, LTP_shp_buf[ ( idx - HARM_SHAPE_FIR_TAPS / 2 + 1) & LTP_MASK ], HarmShapeFIRPacked_Q12 ); + } else { + n_LTP_Q12 = 0; + } + + n_LF_Q10 = SKP_SMLAWB( SKP_SMULWT( sLF_AR_shp_Q12, LF_shp_Q14 ), sLF_MA_shp_Q12, LF_shp_Q14 ); + n_Tilt_Q10 = SKP_SMULWB( sLF_AR_shp_Q12, Tilt_Q14 ); + + sLF_AR_shp_Q12 = SKP_SUB32( st_res_Q12[ i ], SKP_LSHIFT( n_Tilt_Q10, 2 ) ); + sLF_MA_shp_Q12 = SKP_SUB32( sLF_AR_shp_Q12, SKP_LSHIFT( n_LF_Q10, 2 ) ); + + LTP_shp_buf_idx = ( LTP_shp_buf_idx - 1 ) & LTP_MASK; + LTP_shp_buf[ LTP_shp_buf_idx ] = (SKP_int16)SKP_SAT16( SKP_RSHIFT_ROUND( sLF_MA_shp_Q12, 12 ) ); + + xw[i] = (SKP_int16)SKP_SAT16( SKP_RSHIFT_ROUND( SKP_SUB32( sLF_MA_shp_Q12, n_LTP_Q12 ), 12 ) ); + } + + /* Copy temp variable back to state */ + P->sLF_AR_shp1_Q12 = sLF_AR_shp_Q12; + P->sLF_MA_shp1_Q12 = sLF_MA_shp_Q12; + P->sLTP_shp_buf_idx1 = LTP_shp_buf_idx; +} + + diff --git a/libs/silk/src/SKP_Silk_process_NLSFs_FIX.c b/libs/silk/src/SKP_Silk_process_NLSFs_FIX.c new file mode 100644 index 0000000000..8acd2d0525 --- /dev/null +++ b/libs/silk/src/SKP_Silk_process_NLSFs_FIX.c @@ -0,0 +1,143 @@ + + +/*********************************************************************** + +Copyright (c) 2006-2010, Skype Limited. All rights reserved. +Redistribution and use in source and binary forms, with or without +modification, (subject to the limitations in the disclaimer below) +are permitted provided that the following conditions are met: +- Redistributions of source code must retain the above copyright notice, +this list of conditions and the following disclaimer. +- Redistributions in binary form must reproduce the above copyright +notice, this list of conditions and the following disclaimer in the +documentation and/or other materials provided with the distribution. +- Neither the name of Skype Limited, nor the names of specific +contributors, may be used to endorse or promote products derived from +this software without specific prior written permission. +NO EXPRESS OR IMPLIED LICENSES TO ANY PARTY'S PATENT RIGHTS ARE GRANTED +BY THIS LICENSE.THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND +CONTRIBUTORS ''AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, +BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND +FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE +COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, +INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT +NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF +USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON +ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT +(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE +OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + +***********************************************************************/ + +#include "SKP_Silk_main_FIX.h" + +/* Limit, stabilize, convert and quantize NLSFs. */ +void SKP_Silk_process_NLSFs_FIX( + SKP_Silk_encoder_state_FIX *psEnc, /* I/O Encoder state FIX */ + SKP_Silk_encoder_control_FIX *psEncCtrl, /* I/O Encoder control FIX */ + SKP_int *pNLSF_Q15 /* I/O Normalized LSFs (quant out) (0 - (2^15-1)) */ +) +{ + SKP_int doInterpolate; + + + + + + SKP_int pNLSFW_Q6[ MAX_LPC_ORDER ]; + SKP_int NLSF_mu_Q15, NLSF_mu_fluc_red_Q16; + SKP_int32 i_sqr_Q15; + const SKP_Silk_NLSF_CB_struct *psNLSF_CB; + + /* Used only for NLSF interpolation */ + SKP_int pNLSF0_temp_Q15[ MAX_LPC_ORDER ]; + SKP_int pNLSFW0_temp_Q6[ MAX_LPC_ORDER ]; + SKP_int i; + + SKP_assert( psEnc->speech_activity_Q8 >= 0 ); + SKP_assert( psEnc->speech_activity_Q8 <= 256 ); + SKP_assert( psEncCtrl->sparseness_Q8 >= 0 ); + SKP_assert( psEncCtrl->sparseness_Q8 <= 256 ); + SKP_assert( psEncCtrl->sCmn.sigtype == SIG_TYPE_VOICED || psEncCtrl->sCmn.sigtype == SIG_TYPE_UNVOICED ); + + /***********************/ + /* Calculate mu values */ + /***********************/ + if( psEncCtrl->sCmn.sigtype == SIG_TYPE_VOICED ) { + /* NLSF_mu = 0.002f - 0.001f * psEnc->speech_activity; */ + /* NLSF_mu_fluc_red = 0.1f - 0.05f * psEnc->speech_activity; */ + NLSF_mu_Q15 = SKP_SMLAWB( 66, -8388, psEnc->speech_activity_Q8 ); + NLSF_mu_fluc_red_Q16 = SKP_SMLAWB( 6554, -838848, psEnc->speech_activity_Q8 ); + } else { + /* NLSF_mu = 0.005f - 0.004f * psEnc->speech_activity; */ + /* NLSF_mu_fluc_red = 0.2f - 0.1f * psEnc->speech_activity - 0.1f * psEncCtrl->sparseness; */ + NLSF_mu_Q15 = SKP_SMLAWB( 164, -33554, psEnc->speech_activity_Q8 ); + NLSF_mu_fluc_red_Q16 = SKP_SMLAWB( 13107, -1677696, psEnc->speech_activity_Q8 + psEncCtrl->sparseness_Q8 ); + } + SKP_assert( NLSF_mu_Q15 >= 0 ); + SKP_assert( NLSF_mu_Q15 <= 164 ); + SKP_assert( NLSF_mu_fluc_red_Q16 >= 0 ); + SKP_assert( NLSF_mu_fluc_red_Q16 <= 13107 ); + + NLSF_mu_Q15 = SKP_max( NLSF_mu_Q15, 1 ); + + /* Calculate NLSF weights */ + TIC(NLSF_weights_FIX) + SKP_Silk_NLSF_VQ_weights_laroia( pNLSFW_Q6, pNLSF_Q15, psEnc->sCmn.predictLPCOrder ); + TOC(NLSF_weights_FIX) + + /* Update NLSF weights for interpolated NLSFs */ + doInterpolate = ( psEnc->sCmn.useInterpolatedNLSFs == 1 ) && ( psEncCtrl->sCmn.NLSFInterpCoef_Q2 < ( 1 << 2 ) ); + if( doInterpolate ) { + + /* Calculate the interpolated NLSF vector for the first half */ + SKP_Silk_interpolate( pNLSF0_temp_Q15, psEnc->sPred.prev_NLSFq_Q15, pNLSF_Q15, + + + + + + psEncCtrl->sCmn.NLSFInterpCoef_Q2, psEnc->sCmn.predictLPCOrder ); + + /* Calculate first half NLSF weights for the interpolated NLSFs */ + TIC(NLSF_weights_FIX) + SKP_Silk_NLSF_VQ_weights_laroia( pNLSFW0_temp_Q6, pNLSF0_temp_Q15, psEnc->sCmn.predictLPCOrder ); + TOC(NLSF_weights_FIX) + + /* Update NLSF weights with contribution from first half */ + i_sqr_Q15 = SKP_LSHIFT( SKP_SMULBB( psEncCtrl->sCmn.NLSFInterpCoef_Q2, psEncCtrl->sCmn.NLSFInterpCoef_Q2 ), 11 ); + for( i = 0; i < psEnc->sCmn.predictLPCOrder; i++ ) { + pNLSFW_Q6[ i ] = SKP_SMLAWB( SKP_RSHIFT( pNLSFW_Q6[ i ], 1 ), pNLSFW0_temp_Q6[ i ], i_sqr_Q15 ); + SKP_assert( pNLSFW_Q6[ i ] <= SKP_int16_MAX ); + SKP_assert( pNLSFW_Q6[ i ] >= 1 ); + } + } + + /* Set pointer to the NLSF codebook for the current signal type and LPC order */ + psNLSF_CB = psEnc->sCmn.psNLSF_CB[ psEncCtrl->sCmn.sigtype ]; + + /* Quantize NLSF parameters given the trained NLSF codebooks */ + TIC(MSVQ_encode_FIX) + SKP_Silk_NLSF_MSVQ_encode_FIX( psEncCtrl->sCmn.NLSFIndices, pNLSF_Q15, psNLSF_CB, + psEnc->sPred.prev_NLSFq_Q15, pNLSFW_Q6, NLSF_mu_Q15, NLSF_mu_fluc_red_Q16, + psEnc->sCmn.NLSF_MSVQ_Survivors, psEnc->sCmn.predictLPCOrder, psEnc->sCmn.first_frame_after_reset ); + TOC(MSVQ_encode_FIX) + + /* Convert quantized NLSFs back to LPC coefficients */ + SKP_Silk_NLSF2A_stable( psEncCtrl->PredCoef_Q12[ 1 ], pNLSF_Q15, psEnc->sCmn.predictLPCOrder ); + + if( doInterpolate ) { + /* Calculate the interpolated, quantized LSF vector for the first half */ + SKP_Silk_interpolate( pNLSF0_temp_Q15, psEnc->sPred.prev_NLSFq_Q15, pNLSF_Q15, + psEncCtrl->sCmn.NLSFInterpCoef_Q2, psEnc->sCmn.predictLPCOrder ); + + /* Convert back to LPC coefficients */ + SKP_Silk_NLSF2A_stable( psEncCtrl->PredCoef_Q12[ 0 ], pNLSF0_temp_Q15, psEnc->sCmn.predictLPCOrder ); + + } else { + /* Copy LPC coefficients for first half from second half */ + SKP_memcpy( psEncCtrl->PredCoef_Q12[ 0 ], psEncCtrl->PredCoef_Q12[ 1 ], psEnc->sCmn.predictLPCOrder * sizeof( SKP_int16 ) ); + } +} + + diff --git a/libs/silk/src/SKP_Silk_process_gains_FIX.c b/libs/silk/src/SKP_Silk_process_gains_FIX.c new file mode 100644 index 0000000000..276596a71e --- /dev/null +++ b/libs/silk/src/SKP_Silk_process_gains_FIX.c @@ -0,0 +1,135 @@ + + +/*********************************************************************** + +Copyright (c) 2006-2010, Skype Limited. All rights reserved. +Redistribution and use in source and binary forms, with or without +modification, (subject to the limitations in the disclaimer below) +are permitted provided that the following conditions are met: +- Redistributions of source code must retain the above copyright notice, +this list of conditions and the following disclaimer. +- Redistributions in binary form must reproduce the above copyright +notice, this list of conditions and the following disclaimer in the +documentation and/or other materials provided with the distribution. +- Neither the name of Skype Limited, nor the names of specific +contributors, may be used to endorse or promote products derived from +this software without specific prior written permission. +NO EXPRESS OR IMPLIED LICENSES TO ANY PARTY'S PATENT RIGHTS ARE GRANTED +BY THIS LICENSE.THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND + + + + + +CONTRIBUTORS ''AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, +BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND +FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE +COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, +INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT +NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF +USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON +ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT +(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE +OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + +***********************************************************************/ + +#include "SKP_Silk_main_FIX.h" + +/* Processing of gains */ +void SKP_Silk_process_gains_FIX( + SKP_Silk_encoder_state_FIX *psEnc, /* I/O Encoder state_FIX */ + SKP_Silk_encoder_control_FIX *psEncCtrl /* I/O Encoder control_FIX */ +) +{ + SKP_Silk_shape_state_FIX *psShapeSt = &psEnc->sShape; + SKP_int k; + SKP_int32 s_Q16, InvMaxSqrVal_Q16, gain, gain_squared, ResNrg, ResNrgPart; + + /* Gain reduction when LTP coding gain is high */ + if( psEncCtrl->sCmn.sigtype == SIG_TYPE_VOICED ) { + /*s = -0.5f * SKP_sigmoid( 0.25f * ( psEncCtrl->LTPredCodGain - 12.0f ) ); */ + s_Q16 = -SKP_Silk_sigm_Q15( SKP_RSHIFT_ROUND( psEncCtrl->LTPredCodGain_Q7 - (12 << 7), 4 ) ); + for( k = 0; k < NB_SUBFR; k++ ) { + psEncCtrl->Gains_Q16[ k ] = SKP_SMLAWB( psEncCtrl->Gains_Q16[ k ], psEncCtrl->Gains_Q16[ k ], s_Q16 ); + } + } + + /* Limit the quantized signal */ + /* 69 = 21.0f + 16/0.33 */ + InvMaxSqrVal_Q16 = SKP_DIV32_16( SKP_Silk_log2lin( + SKP_SMULWB( (69 << 7) - psEncCtrl->current_SNR_dB_Q7, SKP_FIX_CONST( 0.33, 16 )) ), psEnc->sCmn.subfr_length ); + + for( k = 0; k < NB_SUBFR; k++ ) { + /* Soft limit on ratio residual energy and squared gains */ + ResNrg = psEncCtrl->ResNrg[ k ]; + ResNrgPart = SKP_SMULWW( ResNrg, InvMaxSqrVal_Q16 ); + if( psEncCtrl->ResNrgQ[ k ] > 0 ) { + if( psEncCtrl->ResNrgQ[ k ] < 32 ) { + ResNrgPart = SKP_RSHIFT_ROUND( ResNrgPart, psEncCtrl->ResNrgQ[ k ] ); + } else { + ResNrgPart = 0; + + + + + + } + } else if( psEncCtrl->ResNrgQ[k] != 0 ) { + if( ResNrgPart > SKP_RSHIFT( SKP_int32_MAX, -psEncCtrl->ResNrgQ[ k ] ) ) { + ResNrgPart = SKP_int32_MAX; + } else { + ResNrgPart = SKP_LSHIFT( ResNrgPart, -psEncCtrl->ResNrgQ[ k ] ); + } + } + gain = psEncCtrl->Gains_Q16[ k ]; + gain_squared = SKP_ADD_SAT32( ResNrgPart, SKP_SMMUL( gain, gain ) ); + if( gain_squared < SKP_int16_MAX ) { + /* recalculate with higher precision */ + gain_squared = SKP_SMLAWW( SKP_LSHIFT( ResNrgPart, 16 ), gain, gain ); + SKP_assert( gain_squared > 0 ); + gain = SKP_Silk_SQRT_APPROX( gain_squared ); /* Q8 */ + psEncCtrl->Gains_Q16[ k ] = SKP_LSHIFT_SAT32( gain, 8 ); /* Q16 */ + } else { + gain = SKP_Silk_SQRT_APPROX( gain_squared ); /* Q0 */ + psEncCtrl->Gains_Q16[ k ] = SKP_LSHIFT_SAT32( gain, 16 ); /* Q16 */ + } + } + + /* Noise shaping quantization */ + SKP_Silk_gains_quant( psEncCtrl->sCmn.GainsIndices, psEncCtrl->Gains_Q16, + &psShapeSt->LastGainIndex, psEnc->sCmn.nFramesInPayloadBuf ); + /* Set quantizer offset for voiced signals. Larger offset when LTP coding gain is low or tilt is high (ie low-pass) */ + if( psEncCtrl->sCmn.sigtype == SIG_TYPE_VOICED ) { + if( psEncCtrl->LTPredCodGain_Q7 + SKP_RSHIFT( psEncCtrl->input_tilt_Q15, 8 ) > ( 1 << 7 ) ) { + psEncCtrl->sCmn.QuantOffsetType = 0; + } else { + psEncCtrl->sCmn.QuantOffsetType = 1; + } + } + + /* Quantizer boundary adjustment */ + if( psEncCtrl->sCmn.sigtype == SIG_TYPE_VOICED ) { + psEncCtrl->Lambda_Q10 = SKP_FIX_CONST( 1.3, 10 ) + - SKP_SMULWB( SKP_FIX_CONST( 0.5, 18 ), psEnc->speech_activity_Q8 ) + - SKP_SMULWB( SKP_FIX_CONST( 0.3, 12 ), psEncCtrl->input_quality_Q14 ) + + SKP_SMULBB( SKP_FIX_CONST( 0.2, 10 ), psEncCtrl->sCmn.QuantOffsetType ) + - SKP_SMULWB( SKP_FIX_CONST( 0.1, 12 ), psEncCtrl->coding_quality_Q14 ); + } else { + psEncCtrl->Lambda_Q10 = SKP_FIX_CONST( 1.3, 10 ) + - SKP_SMULWB( SKP_FIX_CONST( 0.5, 18 ), psEnc->speech_activity_Q8 ) + - SKP_SMULWB( SKP_FIX_CONST( 0.4, 12 ), psEncCtrl->input_quality_Q14 ) + + SKP_SMULBB( SKP_FIX_CONST( 0.4, 10 ), psEncCtrl->sCmn.QuantOffsetType ) + - SKP_SMULWB( SKP_FIX_CONST( 0.1, 12 ), psEncCtrl->coding_quality_Q14 ); + } + + + + + + SKP_assert( psEncCtrl->Lambda_Q10 >= 0 ); + SKP_assert( psEncCtrl->Lambda_Q10 < SKP_FIX_CONST( 2, 10 ) ); + +} + + diff --git a/libs/silk/src/SKP_Silk_pulses_to_bytes.c b/libs/silk/src/SKP_Silk_pulses_to_bytes.c new file mode 100644 index 0000000000..d37ba9f4b5 --- /dev/null +++ b/libs/silk/src/SKP_Silk_pulses_to_bytes.c @@ -0,0 +1,92 @@ + + +/*********************************************************************** + + + + + +Copyright (c) 2006-2010, Skype Limited. All rights reserved. +Redistribution and use in source and binary forms, with or without +modification, (subject to the limitations in the disclaimer below) +are permitted provided that the following conditions are met: +- Redistributions of source code must retain the above copyright notice, +this list of conditions and the following disclaimer. +- Redistributions in binary form must reproduce the above copyright +notice, this list of conditions and the following disclaimer in the +documentation and/or other materials provided with the distribution. +- Neither the name of Skype Limited, nor the names of specific +contributors, may be used to endorse or promote products derived from +this software without specific prior written permission. +NO EXPRESS OR IMPLIED LICENSES TO ANY PARTY'S PATENT RIGHTS ARE GRANTED +BY THIS LICENSE.THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND +CONTRIBUTORS ''AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, +BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND +FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE +COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, +INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT +NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF +USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON +ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT +(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE +OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + +***********************************************************************/ + +/* + * File Name: SKP_Silk_pulses_to_bytes.c + */ + +#include +#include "SKP_Silk_main.h" + +/* nBytes = sum_over_shell_blocks( POLY_FIT_0 + POLY_FIT_1 * sum_abs_val + POLY_FIT_2 * sum_abs_val^2 ) */ +#define POLY_FIT_0_Q15 12520 +#define POLY_FIT_1_Q15 15862 +#define POLY_FIT_2_Q20 -9222 // ToDo better training with + +/* Predict number of bytes used to encode q */ +SKP_int SKP_Silk_pulses_to_bytes( /* O Return value, predicted number of bytes used to encode q */ + SKP_Silk_encoder_state *psEncC, /* I/O Encoder State */ + SKP_int q[] /* I Pulse signal */ +) +{ + SKP_int i, j, iter, *q_ptr; + SKP_int32 sum_abs_val, nBytes, acc_nBytes; + /* Take the absolute value of the pulses */ + + + + + + iter = psEncC->frame_length / SHELL_CODEC_FRAME_LENGTH; + + /* Calculate rate as a nonlinaer mapping of sum abs value of each Shell block */ + q_ptr = q; + acc_nBytes = 0; + for( j = 0; j < iter; j++ ) { + sum_abs_val = 0; + for(i = 0; i < SHELL_CODEC_FRAME_LENGTH; i+=4){ + sum_abs_val += SKP_abs( q_ptr[ i + 0 ] ); + sum_abs_val += SKP_abs( q_ptr[ i + 1 ] ); + sum_abs_val += SKP_abs( q_ptr[ i + 2 ] ); + sum_abs_val += SKP_abs( q_ptr[ i + 3 ] ); + } + /* Calculate nBytes used for thi sshell frame */ + nBytes = SKP_SMULWB( SKP_SMULBB( sum_abs_val, sum_abs_val ), POLY_FIT_2_Q20 ); // Q4 + nBytes = SKP_LSHIFT_SAT32( nBytes, 11 ); // Q15 + nBytes += SKP_SMULBB( sum_abs_val, POLY_FIT_1_Q15 ); // Q15 + nBytes += POLY_FIT_0_Q15; // Q15 + + acc_nBytes += nBytes; + + q_ptr += SHELL_CODEC_FRAME_LENGTH; /* update pointer */ + } + + acc_nBytes = SKP_RSHIFT_ROUND( acc_nBytes, 15 ); // Q0 + acc_nBytes = SKP_SAT16( acc_nBytes ); // just to be sure // Q0 + + return((SKP_int)acc_nBytes); +} + + diff --git a/libs/silk/src/SKP_Silk_quant_LTP_gains_FIX.c b/libs/silk/src/SKP_Silk_quant_LTP_gains_FIX.c new file mode 100644 index 0000000000..9ee9d0dc23 --- /dev/null +++ b/libs/silk/src/SKP_Silk_quant_LTP_gains_FIX.c @@ -0,0 +1,127 @@ + + +/*********************************************************************** + +Copyright (c) 2006-2010, Skype Limited. All rights reserved. +Redistribution and use in source and binary forms, with or without +modification, (subject to the limitations in the disclaimer below) +are permitted provided that the following conditions are met: +- Redistributions of source code must retain the above copyright notice, +this list of conditions and the following disclaimer. +- Redistributions in binary form must reproduce the above copyright +notice, this list of conditions and the following disclaimer in the +documentation and/or other materials provided with the distribution. +- Neither the name of Skype Limited, nor the names of specific +contributors, may be used to endorse or promote products derived from +this software without specific prior written permission. + + + + + +NO EXPRESS OR IMPLIED LICENSES TO ANY PARTY'S PATENT RIGHTS ARE GRANTED +BY THIS LICENSE.THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND +CONTRIBUTORS ''AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, +BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND +FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE +COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, +INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT +NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF +USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON +ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT +(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE +OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + +***********************************************************************/ + +#include "SKP_Silk_main_FIX.h" + +void SKP_Silk_quant_LTP_gains_FIX( + SKP_int16 B_Q14[], /* I/O (un)quantized LTP gains */ + SKP_int cbk_index[], /* O Codebook Index */ + SKP_int *periodicity_index, /* O Periodicity Index */ + const SKP_int32 W_Q18[], /* I Error Weights in Q18 */ + SKP_int mu_Q8, /* I Mu value (R/D tradeoff) */ + SKP_int lowComplexity /* I Flag for low complexity */ +) +{ + SKP_int j, k, temp_idx[ NB_SUBFR ], cbk_size; + const SKP_uint16 *cdf_ptr; + const SKP_int16 *cl_ptr; + const SKP_int16 *cbk_ptr_Q14; + const SKP_int16 *b_Q14_ptr; + const SKP_int32 *W_Q18_ptr; + SKP_int32 rate_dist_subfr, rate_dist, min_rate_dist; + + + + /***************************************************/ + /* iterate over different codebooks with different */ + /* rates/distortions, and choose best */ + /***************************************************/ + min_rate_dist = SKP_int32_MAX; + for( k = 0; k < 3; k++ ) { + cdf_ptr = SKP_Silk_LTP_gain_CDF_ptrs[ k ]; + cl_ptr = SKP_Silk_LTP_gain_BITS_Q6_ptrs[ k ]; + cbk_ptr_Q14 = SKP_Silk_LTP_vq_ptrs_Q14[ k ]; + cbk_size = SKP_Silk_LTP_vq_sizes[ k ]; + + /* Setup pointer to first subframe */ + + + + + + W_Q18_ptr = W_Q18; + b_Q14_ptr = B_Q14; + + rate_dist = 0; + for( j = 0; j < NB_SUBFR; j++ ) { + + SKP_Silk_VQ_WMat_EC_FIX( + &temp_idx[ j ], /* O index of best codebook vector */ + &rate_dist_subfr, /* O best weighted quantization error + mu * rate */ + b_Q14_ptr, /* I input vector to be quantized */ + W_Q18_ptr, /* I weighting matrix */ + cbk_ptr_Q14, /* I codebook */ + cl_ptr, /* I code length for each codebook vector */ + mu_Q8, /* I tradeoff between weighted error and rate */ + cbk_size /* I number of vectors in codebook */ + ); + + rate_dist = SKP_ADD_POS_SAT32( rate_dist, rate_dist_subfr ); + + b_Q14_ptr += LTP_ORDER; + W_Q18_ptr += LTP_ORDER * LTP_ORDER; + } + + /* Avoid never finding a codebook */ + rate_dist = SKP_min( SKP_int32_MAX - 1, rate_dist ); + + if( rate_dist < min_rate_dist ) { + min_rate_dist = rate_dist; + SKP_memcpy( cbk_index, temp_idx, NB_SUBFR * sizeof( SKP_int ) ); + *periodicity_index = k; + } + + /* Break early in low-complexity mode if rate distortion is below threshold */ + if( lowComplexity && ( rate_dist < SKP_Silk_LTP_gain_middle_avg_RD_Q14 ) ) { + break; + } + } + + cbk_ptr_Q14 = SKP_Silk_LTP_vq_ptrs_Q14[ *periodicity_index ]; + for( j = 0; j < NB_SUBFR; j++ ) { + for( k = 0; k < LTP_ORDER; k++ ) { + B_Q14[ j * LTP_ORDER + k ] = cbk_ptr_Q14[ SKP_MLA( k, cbk_index[ j ], LTP_ORDER ) ]; + } + } +} + + + + + + + + diff --git a/libs/silk/src/SKP_Silk_range_coder.c b/libs/silk/src/SKP_Silk_range_coder.c new file mode 100644 index 0000000000..e4c495a31c --- /dev/null +++ b/libs/silk/src/SKP_Silk_range_coder.c @@ -0,0 +1,423 @@ + + +/*********************************************************************** + +Copyright (c) 2006-2010, Skype Limited. All rights reserved. +Redistribution and use in source and binary forms, with or without +modification, (subject to the limitations in the disclaimer below) +are permitted provided that the following conditions are met: +- Redistributions of source code must retain the above copyright notice, +this list of conditions and the following disclaimer. +- Redistributions in binary form must reproduce the above copyright +notice, this list of conditions and the following disclaimer in the +documentation and/or other materials provided with the distribution. +- Neither the name of Skype Limited, nor the names of specific +contributors, may be used to endorse or promote products derived from +this software without specific prior written permission. +NO EXPRESS OR IMPLIED LICENSES TO ANY PARTY'S PATENT RIGHTS ARE GRANTED +BY THIS LICENSE.THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND +CONTRIBUTORS ''AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, +BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND +FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE +COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, +INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT +NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF +USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON +ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT +(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE +OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + +***********************************************************************/ + +#include "SKP_Silk_main.h" + +/* Range encoder for one symbol */ +void SKP_Silk_range_encoder( + SKP_Silk_range_coder_state *psRC, /* I/O compressor data structure */ + const SKP_int data, /* I uncompressed data */ + const SKP_uint16 prob[] /* I cumulative density functions */ +) +{ + SKP_uint32 low_Q16, high_Q16; + SKP_uint32 base_tmp, range_Q32; + + /* Copy structure data */ + SKP_uint32 base_Q32 = psRC->base_Q32; + SKP_uint32 range_Q16 = psRC->range_Q16; + SKP_int32 bufferIx = psRC->bufferIx; + + + + + + SKP_uint8 *buffer = psRC->buffer; + + if( psRC->error ) { + return; + } + + /* Update interval */ + low_Q16 = prob[ data ]; + high_Q16 = prob[ data + 1 ]; + base_tmp = base_Q32; /* save current base, to test for carry */ + base_Q32 += SKP_MUL_uint( range_Q16, low_Q16 ); + range_Q32 = SKP_MUL_uint( range_Q16, high_Q16 - low_Q16 ); + + /* Check for carry */ + if( base_Q32 < base_tmp ) { + /* Propagate carry in buffer */ + SKP_int bufferIx_tmp = bufferIx; + while( ( ++buffer[ --bufferIx_tmp ] ) == 0 ); + } + + /* Check normalization */ + if( range_Q32 & 0xFF000000 ) { + /* No normalization */ + range_Q16 = SKP_RSHIFT_uint( range_Q32, 16 ); + } else { + if( range_Q32 & 0xFFFF0000 ) { + /* Normalization of 8 bits shift */ + range_Q16 = SKP_RSHIFT_uint( range_Q32, 8 ); + } else { + /* Normalization of 16 bits shift */ + range_Q16 = range_Q32; + /* Make sure not to write beyond buffer */ + if( bufferIx >= psRC->bufferLength ) { + psRC->error = RANGE_CODER_WRITE_BEYOND_BUFFER; + return; + } + /* Write one byte to buffer */ + buffer[ bufferIx++ ] = (SKP_uint8)( SKP_RSHIFT_uint( base_Q32, 24 ) ); + base_Q32 = SKP_LSHIFT_ovflw( base_Q32, 8 ); + } + /* Make sure not to write beyond buffer */ + if( bufferIx >= psRC->bufferLength ) { + psRC->error = RANGE_CODER_WRITE_BEYOND_BUFFER; + return; + } + /* Write one byte to buffer */ + buffer[ bufferIx++ ] = (SKP_uint8)( SKP_RSHIFT_uint( base_Q32, 24 ) ); + base_Q32 = SKP_LSHIFT_ovflw( base_Q32, 8 ); + + + + + + } + + /* Copy structure data back */ + psRC->base_Q32 = base_Q32; + psRC->range_Q16 = range_Q16; + psRC->bufferIx = bufferIx; +} + +/* Range encoder for multiple symbols */ +void SKP_Silk_range_encoder_multi( + SKP_Silk_range_coder_state *psRC, /* I/O compressor data structure */ + const SKP_int data[], /* I uncompressed data [nSymbols] */ + const SKP_uint16 * const prob[], /* I cumulative density functions */ + const SKP_int nSymbols /* I number of data symbols */ +) +{ + SKP_int k; + for( k = 0; k < nSymbols; k++ ) { + SKP_Silk_range_encoder( psRC, data[ k ], prob[ k ] ); + } +} + +/* Range decoder for one symbol */ +void SKP_Silk_range_decoder( + SKP_int data[], /* O uncompressed data */ + SKP_Silk_range_coder_state *psRC, /* I/O compressor data structure */ + const SKP_uint16 prob[], /* I cumulative density function */ + SKP_int probIx /* I initial (middle) entry of cdf */ +) +{ + SKP_uint32 low_Q16, high_Q16; + SKP_uint32 base_tmp, range_Q32; + + /* Copy structure data */ + SKP_uint32 base_Q32 = psRC->base_Q32; + SKP_uint32 range_Q16 = psRC->range_Q16; + SKP_int32 bufferIx = psRC->bufferIx; + SKP_uint8 *buffer = &psRC->buffer[ 4 ]; + + if( psRC->error ) { + /* Set output to zero */ + *data = 0; + return; + } + + high_Q16 = prob[ probIx ]; + base_tmp = SKP_MUL_uint( range_Q16, high_Q16 ); + if( base_tmp > base_Q32 ) { + + + + + + while( 1 ) { + low_Q16 = prob[ --probIx ]; + base_tmp = SKP_MUL_uint( range_Q16, low_Q16 ); + if( base_tmp <= base_Q32 ) { + break; + } + high_Q16 = low_Q16; + /* Test for out of range */ + if( high_Q16 == 0 ) { + psRC->error = RANGE_CODER_CDF_OUT_OF_RANGE; + /* Set output to zero */ + *data = 0; + return; + } + } + } else { + while( 1 ) { + low_Q16 = high_Q16; + high_Q16 = prob[ ++probIx ]; + base_tmp = SKP_MUL_uint( range_Q16, high_Q16 ); + if( base_tmp > base_Q32 ) { + probIx--; + break; + } + /* Test for out of range */ + if( high_Q16 == 0xFFFF ) { + psRC->error = RANGE_CODER_CDF_OUT_OF_RANGE; + /* Set output to zero */ + *data = 0; + return; + } + } + } + *data = probIx; + base_Q32 -= SKP_MUL_uint( range_Q16, low_Q16 ); + range_Q32 = SKP_MUL_uint( range_Q16, high_Q16 - low_Q16 ); + + /* Check normalization */ + if( range_Q32 & 0xFF000000 ) { + /* No normalization */ + range_Q16 = SKP_RSHIFT_uint( range_Q32, 16 ); + } else { + if( range_Q32 & 0xFFFF0000 ) { + /* Normalization of 8 bits shift */ + range_Q16 = SKP_RSHIFT_uint( range_Q32, 8 ); + /* Check for errors */ + if( SKP_RSHIFT_uint( base_Q32, 24 ) ) { + psRC->error = RANGE_CODER_NORMALIZATION_FAILED; + + + + + + /* Set output to zero */ + *data = 0; + return; + } + } else { + /* Normalization of 16 bits shift */ + range_Q16 = range_Q32; + /* Check for errors */ + if( SKP_RSHIFT( base_Q32, 16 ) ) { + psRC->error = RANGE_CODER_NORMALIZATION_FAILED; + /* Set output to zero */ + *data = 0; + return; + } + /* Update base */ + base_Q32 = SKP_LSHIFT_uint( base_Q32, 8 ); + /* Make sure not to read beyond buffer */ + if( bufferIx < psRC->bufferLength ) { + /* Read one byte from buffer */ + base_Q32 |= (SKP_uint32)buffer[ bufferIx++ ]; + } + } + /* Update base */ + base_Q32 = SKP_LSHIFT_uint( base_Q32, 8 ); + /* Make sure not to read beyond buffer */ + if( bufferIx < psRC->bufferLength ) { + /* Read one byte from buffer */ + base_Q32 |= (SKP_uint32)buffer[ bufferIx++ ]; + } + } + + /* Check for zero interval length */ + if( range_Q16 == 0 ) { + psRC->error = RANGE_CODER_ZERO_INTERVAL_WIDTH; + /* Set output to zero */ + *data = 0; + return; + } + + /* Copy structure data back */ + psRC->base_Q32 = base_Q32; + psRC->range_Q16 = range_Q16; + psRC->bufferIx = bufferIx; +} + +/* Range decoder for multiple symbols */ +void SKP_Silk_range_decoder_multi( + SKP_int data[], /* O uncompressed data [nSymbols] */ + + + + + + SKP_Silk_range_coder_state *psRC, /* I/O compressor data structure */ + const SKP_uint16 * const prob[], /* I cumulative density functions */ + const SKP_int probStartIx[], /* I initial (middle) entries of cdfs [nSymbols] */ + const SKP_int nSymbols /* I number of data symbols */ +) +{ + SKP_int k; + for( k = 0; k < nSymbols; k++ ) { + SKP_Silk_range_decoder( &data[ k ], psRC, prob[ k ], probStartIx[ k ] ); + } +} + +/* Initialize range encoder */ +void SKP_Silk_range_enc_init( + SKP_Silk_range_coder_state *psRC /* O compressor data structure */ +) +{ + /* Initialize structure */ + psRC->bufferLength = MAX_ARITHM_BYTES; + psRC->range_Q16 = 0x0000FFFF; + psRC->bufferIx = 0; + psRC->base_Q32 = 0; + psRC->error = 0; +} + +/* Initialize range decoder */ +void SKP_Silk_range_dec_init( + SKP_Silk_range_coder_state *psRC, /* O compressor data structure */ + const SKP_uint8 buffer[], /* I buffer for compressed data [bufferLength] */ + const SKP_int32 bufferLength /* I buffer length (in bytes) */ +) +{ + /* check input */ + if( bufferLength > MAX_ARITHM_BYTES ) { + psRC->error = RANGE_CODER_DEC_PAYLOAD_TOO_LONG; + return; + } + /* Initialize structure */ + /* Copy to internal buffer */ + SKP_memcpy( psRC->buffer, buffer, bufferLength * sizeof( SKP_uint8 ) ); + psRC->bufferLength = bufferLength; + psRC->bufferIx = 0; + psRC->base_Q32 = + SKP_LSHIFT_uint( (SKP_uint32)buffer[ 0 ], 24 ) | + SKP_LSHIFT_uint( (SKP_uint32)buffer[ 1 ], 16 ) | + SKP_LSHIFT_uint( (SKP_uint32)buffer[ 2 ], 8 ) | + (SKP_uint32)buffer[ 3 ]; + psRC->range_Q16 = 0x0000FFFF; + + + + + + psRC->error = 0; +} + +/* Determine length of bitstream */ +SKP_int SKP_Silk_range_coder_get_length( /* O returns number of BITS in stream */ + const SKP_Silk_range_coder_state *psRC, /* I compressed data structure */ + SKP_int *nBytes /* O number of BYTES in stream */ +) +{ + SKP_int nBits; + + /* Number of additional bits (1..9) required to be stored to stream */ + nBits = SKP_LSHIFT( psRC->bufferIx, 3 ) + SKP_Silk_CLZ32( psRC->range_Q16 - 1 ) - 14; + + *nBytes = SKP_RSHIFT( nBits + 7, 3 ); + + /* Return number of bits in bitstream */ + return nBits; +} + +/* Write shortest uniquely decodable stream to buffer, and determine its length */ +void SKP_Silk_range_enc_wrap_up( + SKP_Silk_range_coder_state *psRC /* I/O compressed data structure */ +) +{ + SKP_int bufferIx_tmp, bits_to_store, bits_in_stream, nBytes, mask; + SKP_uint32 base_Q24; + + /* Lower limit of interval, shifted 8 bits to the right */ + base_Q24 = SKP_RSHIFT_uint( psRC->base_Q32, 8 ); + + bits_in_stream = SKP_Silk_range_coder_get_length( psRC, &nBytes ); + + /* Number of additional bits (1..9) required to be stored to stream */ + bits_to_store = bits_in_stream - SKP_LSHIFT( psRC->bufferIx, 3 ); + /* Round up to required resolution */ + base_Q24 += SKP_RSHIFT_uint( 0x00800000, bits_to_store - 1 ); + base_Q24 &= SKP_LSHIFT_ovflw( 0xFFFFFFFF, 24 - bits_to_store ); + + /* Check for carry */ + if( base_Q24 & 0x01000000 ) { + /* Propagate carry in buffer */ + bufferIx_tmp = psRC->bufferIx; + while( ( ++( psRC->buffer[ --bufferIx_tmp ] ) ) == 0 ); + } + + /* Store to stream, making sure not to write beyond buffer */ + if( psRC->bufferIx < psRC->bufferLength ) { + + + + + + psRC->buffer[ psRC->bufferIx++ ] = (SKP_uint8)SKP_RSHIFT_uint( base_Q24, 16 ); + if( bits_to_store > 8 ) { + if( psRC->bufferIx < psRC->bufferLength ) { + psRC->buffer[ psRC->bufferIx++ ] = (SKP_uint8)SKP_RSHIFT_uint( base_Q24, 8 ); + } + } + } + + /* Fill up any remaining bits in the last byte with 1s */ + if( bits_in_stream & 7 ) { + mask = SKP_RSHIFT( 0xFF, bits_in_stream & 7 ); + if( nBytes - 1 < psRC->bufferLength ) { + psRC->buffer[ nBytes - 1 ] |= mask; + } + } +} + +/* Check that any remaining bits in the last byte are set to 1 */ +void SKP_Silk_range_coder_check_after_decoding( + SKP_Silk_range_coder_state *psRC /* I/O compressed data structure */ +) +{ + SKP_int bits_in_stream, nBytes, mask; + + bits_in_stream = SKP_Silk_range_coder_get_length( psRC, &nBytes ); + + /* Make sure not to read beyond buffer */ + if( nBytes - 1 >= psRC->bufferLength ) { + psRC->error = RANGE_CODER_DECODER_CHECK_FAILED; + return; + } + + /* Test any remaining bits in last byte */ + if( bits_in_stream & 7 ) { + mask = SKP_RSHIFT( 0xFF, bits_in_stream & 7 ); + if( ( psRC->buffer[ nBytes - 1 ] & mask ) != mask ) { + psRC->error = RANGE_CODER_DECODER_CHECK_FAILED; + return; + } + } +} + + + + + + + + + + + + diff --git a/libs/silk/src/SKP_Silk_regularize_correlations_FIX.c b/libs/silk/src/SKP_Silk_regularize_correlations_FIX.c new file mode 100644 index 0000000000..bf715fefc4 --- /dev/null +++ b/libs/silk/src/SKP_Silk_regularize_correlations_FIX.c @@ -0,0 +1,52 @@ + + +/*********************************************************************** + +Copyright (c) 2006-2010, Skype Limited. All rights reserved. +Redistribution and use in source and binary forms, with or without +modification, (subject to the limitations in the disclaimer below) +are permitted provided that the following conditions are met: +- Redistributions of source code must retain the above copyright notice, +this list of conditions and the following disclaimer. +- Redistributions in binary form must reproduce the above copyright +notice, this list of conditions and the following disclaimer in the +documentation and/or other materials provided with the distribution. +- Neither the name of Skype Limited, nor the names of specific +contributors, may be used to endorse or promote products derived from +this software without specific prior written permission. +NO EXPRESS OR IMPLIED LICENSES TO ANY PARTY'S PATENT RIGHTS ARE GRANTED +BY THIS LICENSE.THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND +CONTRIBUTORS ''AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, +BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND +FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE +COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, +INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT +NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF +USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON +ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT +(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE +OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + +***********************************************************************/ + +#include "SKP_Silk_main_FIX.h" + +/* Add noise to matrix diagonal */ +void SKP_Silk_regularize_correlations_FIX( + SKP_int32 *XX, /* I/O Correlation matrices */ + SKP_int32 *xx, /* I/O Correlation values */ + SKP_int32 noise, /* I Noise to add */ + SKP_int D /* I Dimension of XX */ +) +{ + SKP_int i; + for( i = 0; i < D; i++ ) { + matrix_ptr( &XX[ 0 ], i, i, D ) = SKP_ADD32( matrix_ptr( &XX[ 0 ], i, i, D ), noise ); + } + xx[ 0 ] += noise; +} + + + + + diff --git a/libs/silk/src/SKP_Silk_resample_1_2.c b/libs/silk/src/SKP_Silk_resample_1_2.c new file mode 100644 index 0000000000..629aaa3a1f --- /dev/null +++ b/libs/silk/src/SKP_Silk_resample_1_2.c @@ -0,0 +1,88 @@ + + +/*********************************************************************** + +Copyright (c) 2006-2010, Skype Limited. All rights reserved. +Redistribution and use in source and binary forms, with or without +modification, (subject to the limitations in the disclaimer below) +are permitted provided that the following conditions are met: +- Redistributions of source code must retain the above copyright notice, +this list of conditions and the following disclaimer. +- Redistributions in binary form must reproduce the above copyright +notice, this list of conditions and the following disclaimer in the +documentation and/or other materials provided with the distribution. +- Neither the name of Skype Limited, nor the names of specific +contributors, may be used to endorse or promote products derived from +this software without specific prior written permission. +NO EXPRESS OR IMPLIED LICENSES TO ANY PARTY'S PATENT RIGHTS ARE GRANTED +BY THIS LICENSE.THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND +CONTRIBUTORS ''AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, +BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND +FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE +COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, +INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT +NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF +USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON +ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT +(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE +OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + +***********************************************************************/ + +/* * + * SKP_Silk_resample_1_2 * + * * + * Downsample by a factor 2 * + * * + * Copyright 2006 (c), Skype Limited * + * Date: 060221 * + * */ +#include "SKP_Silk_SigProc_FIX.h" + +/* Coefficients for 2-fold resampling */ +static SKP_int16 A20_Resample_1_2[ 3 ] = { 1254, 10102, 22898 }; +static SKP_int16 A21_Resample_1_2[ 3 ] = { 4810, 16371, 29374 }; + + +/* Downsample by a factor 2 */ + + + + + +void SKP_Silk_resample_1_2( + const SKP_int16 *in, /* I: 16 kHz signal [2*len] */ + SKP_int32 *S, /* I/O: State vector [6] */ + SKP_int16 *out, /* O: 8 kHz signal [len] */ + SKP_int32 *scratch, /* I: Scratch memory [4*len] */ + const SKP_int32 len /* I: Number of OUTPUT samples*/ +) +{ + SKP_int32 k, idx; + + /* De-interleave allpass inputs, and convert Q15 -> Q25 */ + for( k = 0; k < len; k++ ) { + idx = SKP_LSHIFT( k, 1 ); + scratch[ k ] = SKP_LSHIFT( (SKP_int32)in[ idx ], 10 ); + scratch[ k + len ] = SKP_LSHIFT( (SKP_int32)in[ idx + 1 ], 10 ); + } + + idx = SKP_LSHIFT( len, 1 ); + + /* Allpass filters */ + SKP_Silk_allpass_int( scratch, S, A21_Resample_1_2[ 0 ], scratch + idx, len ); + SKP_Silk_allpass_int( scratch + idx, S + 1, A21_Resample_1_2[ 1 ], scratch + idx + len, len ); + SKP_Silk_allpass_int( scratch + idx + len, S + 2, A21_Resample_1_2[ 2 ], scratch, len ); + + SKP_Silk_allpass_int( scratch + len, S + 3, A20_Resample_1_2[ 0 ], scratch + idx, len ); + SKP_Silk_allpass_int( scratch + idx, S + 4, A20_Resample_1_2[ 1 ], scratch + idx + len, len ); + SKP_Silk_allpass_int( scratch + idx + len, S + 5, A20_Resample_1_2[ 2 ], scratch + len, len ); + + /* Add two allpass outputs */ + for( k = 0; k < len; k++ ) { + out[ k ] = (SKP_int16)SKP_SAT16( SKP_RSHIFT_ROUND( scratch[ k ] + scratch[ k + len ], 11 ) ); + } +} + + + diff --git a/libs/silk/src/SKP_Silk_resample_1_2_coarse.c b/libs/silk/src/SKP_Silk_resample_1_2_coarse.c new file mode 100644 index 0000000000..ffff5cda2c --- /dev/null +++ b/libs/silk/src/SKP_Silk_resample_1_2_coarse.c @@ -0,0 +1,90 @@ + + +/*********************************************************************** + +Copyright (c) 2006-2010, Skype Limited. All rights reserved. +Redistribution and use in source and binary forms, with or without +modification, (subject to the limitations in the disclaimer below) +are permitted provided that the following conditions are met: +- Redistributions of source code must retain the above copyright notice, +this list of conditions and the following disclaimer. +- Redistributions in binary form must reproduce the above copyright + + + + + +notice, this list of conditions and the following disclaimer in the +documentation and/or other materials provided with the distribution. +- Neither the name of Skype Limited, nor the names of specific +contributors, may be used to endorse or promote products derived from +this software without specific prior written permission. +NO EXPRESS OR IMPLIED LICENSES TO ANY PARTY'S PATENT RIGHTS ARE GRANTED +BY THIS LICENSE.THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND +CONTRIBUTORS ''AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, +BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND +FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE +COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, +INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT +NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF +USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON +ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT +(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE +OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + +***********************************************************************/ + +/* * + * SKP_Silk_resample_1_2_coarse.c * + * * + * Downsample by a factor 2, coarser * + * * + * Copyright 2006 (c), Skype Limited * + * Date: 060221 * + * */ +#include "SKP_Silk_SigProc_FIX.h" + +/* downsample by a factor 2, coarser */ +void SKP_Silk_resample_1_2_coarse( + const SKP_int16 *in, /* I: 16 kHz signal [2*len] */ + SKP_int32 *S, /* I/O: State vector [4] */ + SKP_int16 *out, /* O: 8 kHz signal [len] */ + SKP_int32 *scratch, /* I: Scratch memory [3*len] */ + const SKP_int32 len /* I: Number of OUTPUT samples*/ +) +{ + SKP_int32 k, idx; + + /* Coefficients for coarser 2-fold resampling */ + const SKP_int16 A20c[ 2 ] = { 2119, 16663 }; + const SKP_int16 A21c[ 2 ] = { 8050, 26861 }; + + /* De-interleave allpass inputs, and convert Q15 -> Q25 */ + for( k = 0; k < len; k++ ) { + idx = SKP_LSHIFT( k, 1 ); + + + + + + scratch[ k ] = SKP_LSHIFT( (SKP_int32)in[ idx ], 10 ); + scratch[ k + len ] = SKP_LSHIFT( (SKP_int32)in[ idx + 1 ], 10 ); + } + + idx = SKP_LSHIFT( len, 1 ); + /* Allpass filters */ + SKP_Silk_allpass_int( scratch, S, A21c[ 0 ], scratch + idx, len ); + SKP_Silk_allpass_int( scratch + idx, S + 1, A21c[ 1 ], scratch, len ); + + SKP_Silk_allpass_int( scratch + len, S + 2, A20c[ 0 ], scratch + idx, len ); + SKP_Silk_allpass_int( scratch + idx, S + 3, A20c[ 1 ], scratch + len, len ); + + /* Add two allpass outputs */ + for( k = 0; k < len; k++ ) { + out[ k ] = (SKP_int16)SKP_SAT16( SKP_RSHIFT_ROUND( scratch[ k ] + scratch[ k + len ], 11 ) ); + } +} + + + + diff --git a/libs/silk/src/SKP_Silk_resample_1_2_coarsest.c b/libs/silk/src/SKP_Silk_resample_1_2_coarsest.c new file mode 100644 index 0000000000..d629c1cf6e --- /dev/null +++ b/libs/silk/src/SKP_Silk_resample_1_2_coarsest.c @@ -0,0 +1,84 @@ + + +/*********************************************************************** + +Copyright (c) 2006-2010, Skype Limited. All rights reserved. +Redistribution and use in source and binary forms, with or without +modification, (subject to the limitations in the disclaimer below) +are permitted provided that the following conditions are met: +- Redistributions of source code must retain the above copyright notice, +this list of conditions and the following disclaimer. +- Redistributions in binary form must reproduce the above copyright +notice, this list of conditions and the following disclaimer in the +documentation and/or other materials provided with the distribution. +- Neither the name of Skype Limited, nor the names of specific +contributors, may be used to endorse or promote products derived from +this software without specific prior written permission. +NO EXPRESS OR IMPLIED LICENSES TO ANY PARTY'S PATENT RIGHTS ARE GRANTED +BY THIS LICENSE.THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND +CONTRIBUTORS ''AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, +BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND +FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE +COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, +INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT +NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF +USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON +ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT + + + + + +(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE +OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + +***********************************************************************/ + +/* * + * SKP_Silk_resample_1_2_coarsest.c * + * * + * Downsample by a factor 2, coarsest * + * * + * Copyright 2006 (c), Skype Limited * + * Date: 060221 * + * */ +#include "SKP_Silk_SigProc_FIX.h" + + +/* Coefficients for coarsest 2-fold resampling */ +static SKP_int16 A20cst[ 1 ] = { 3786 }; +static SKP_int16 A21cst[ 1 ] = { 17908 }; + +/* Downsample by a factor 2, coarsest */ +void SKP_Silk_resample_1_2_coarsest( + const SKP_int16 *in, /* I: 16 kHz signal [2*len] */ + SKP_int32 *S, /* I/O: State vector [2] */ + SKP_int16 *out, /* O: 8 kHz signal [len] */ + SKP_int32 *scratch, /* I: Scratch memory [3*len] */ + const SKP_int32 len /* I: Number of OUTPUT samples*/ +) +{ + SKP_int32 k, idx; + + /* De-interleave allpass inputs, and convert Q15 -> Q25 */ + for( k = 0; k < len; k++ ) { + idx = SKP_LSHIFT( k, 1 ); + scratch[ k ] = SKP_LSHIFT( (SKP_int32)in[ idx ], 10 ); + scratch[ k + len ] = SKP_LSHIFT( (SKP_int32)in[ idx + 1 ], 10 ); + } + + idx = SKP_LSHIFT( len, 1 ); + /* Allpass filters */ + SKP_Silk_allpass_int( scratch, S, A21cst[ 0 ], scratch + idx, len ); + SKP_Silk_allpass_int( scratch + len, S + 1, A20cst[ 0 ], scratch, len ); + + /* Add two allpass outputs */ + for( k = 0; k < len; k++ ) { + out[ k ] = (SKP_int16)SKP_SAT16( SKP_RSHIFT_ROUND( scratch[ k ] + scratch[ k + idx ], 11 ) ); + } +} + + + + + diff --git a/libs/silk/src/SKP_Silk_resample_1_3.c b/libs/silk/src/SKP_Silk_resample_1_3.c new file mode 100644 index 0000000000..a3ab790915 --- /dev/null +++ b/libs/silk/src/SKP_Silk_resample_1_3.c @@ -0,0 +1,117 @@ + + +/*********************************************************************** + +Copyright (c) 2006-2010, Skype Limited. All rights reserved. +Redistribution and use in source and binary forms, with or without +modification, (subject to the limitations in the disclaimer below) +are permitted provided that the following conditions are met: +- Redistributions of source code must retain the above copyright notice, +this list of conditions and the following disclaimer. +- Redistributions in binary form must reproduce the above copyright +notice, this list of conditions and the following disclaimer in the +documentation and/or other materials provided with the distribution. +- Neither the name of Skype Limited, nor the names of specific +contributors, may be used to endorse or promote products derived from +this software without specific prior written permission. +NO EXPRESS OR IMPLIED LICENSES TO ANY PARTY'S PATENT RIGHTS ARE GRANTED +BY THIS LICENSE.THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND +CONTRIBUTORS ''AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, +BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND +FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE +COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, +INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT +NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF +USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON +ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT +(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE +OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + +***********************************************************************/ + +/* * + * SKP_Silk_resample_1_3.c * + * * + * Downsamples by a factor 3 * + * * + * Copyright 2008 (c), Skype Limited * + * Date: 081113 * + * */ +#include "SKP_Silk_SigProc_FIX.h" + +#define OUT_SUBFR_LEN 80 + +/* Downsamples by a factor 3 */ +void SKP_Silk_resample_1_3( + SKP_int16 *out, /* O: Fs_low signal [inLen/3] */ + SKP_int32 *S, /* I/O: State vector [7] */ + + + + + + const SKP_int16 *in, /* I: Fs_high signal [inLen] */ + const SKP_int32 inLen /* I: Input length, must be a multiple of 3 */ +) +{ + SKP_int k, outLen, LSubFrameIn, LSubFrameOut; + SKP_int32 out_tmp, limit = 102258000; // (102258000 + 1560) * 21 * 2^(-16) = 32767.5 + SKP_int32 scratch0[ 3 * OUT_SUBFR_LEN ]; + SKP_int32 scratch10[ OUT_SUBFR_LEN ], scratch11[ OUT_SUBFR_LEN ], scratch12[ OUT_SUBFR_LEN ]; + /* coefficients for 3-fold resampling */ + const SKP_int16 A30[ 2 ] = { 1773, 17818 }; + const SKP_int16 A31[ 2 ] = { 4942, 25677 }; + const SKP_int16 A32[ 2 ] = { 11786, 29304 }; + + /* Check that input is multiple of 3 */ + SKP_assert( inLen % 3 == 0 ); + + outLen = SKP_DIV32_16( inLen, 3 ); + while( outLen > 0 ) { + LSubFrameOut = SKP_min_int( OUT_SUBFR_LEN, outLen ); + LSubFrameIn = SKP_SMULBB( 3, LSubFrameOut ); + + /* Low-pass filter, Q15 -> Q25 */ + SKP_Silk_lowpass_short( in, S, scratch0, LSubFrameIn ); + + /* De-interleave three allpass inputs */ + for( k = 0; k < LSubFrameOut; k++ ) { + scratch10[ k ] = scratch0[ 3 * k ]; + scratch11[ k ] = scratch0[ 3 * k + 1 ]; + scratch12[ k ] = scratch0[ 3 * k + 2 ]; + } + + /* Allpass filters */ + SKP_Silk_allpass_int( scratch10, S + 1, A32[ 0 ], scratch0, LSubFrameOut ); + SKP_Silk_allpass_int( scratch0, S + 2, A32[ 1 ], scratch10, LSubFrameOut ); + + SKP_Silk_allpass_int( scratch11, S + 3, A31[ 0 ], scratch0, LSubFrameOut ); + SKP_Silk_allpass_int( scratch0, S + 4, A31[ 1 ], scratch11, LSubFrameOut ); + + SKP_Silk_allpass_int( scratch12, S + 5, A30[ 0 ], scratch0, LSubFrameOut ); + SKP_Silk_allpass_int( scratch0, S + 6, A30[ 1 ], scratch12, LSubFrameOut ); + + /* Add three allpass outputs */ + for( k = 0; k < LSubFrameOut; k++ ) { + out_tmp = scratch10[ k ] + scratch11[ k ] + scratch12[ k ]; + if( out_tmp - limit > 0 ) { + out[ k ] = SKP_int16_MAX; + } else if( out_tmp + limit < 0 ) { + out[ k ] = SKP_int16_MIN; + + + + + + } else { + out[ k ] = (SKP_int16) SKP_SMULWB( out_tmp + 1560, 21 ); + } + } + + in += LSubFrameIn; + out += LSubFrameOut; + outLen -= LSubFrameOut; + } +} + + diff --git a/libs/silk/src/SKP_Silk_resample_2_1_coarse.c b/libs/silk/src/SKP_Silk_resample_2_1_coarse.c new file mode 100644 index 0000000000..5013b7cd05 --- /dev/null +++ b/libs/silk/src/SKP_Silk_resample_2_1_coarse.c @@ -0,0 +1,84 @@ + + +/*********************************************************************** + +Copyright (c) 2006-2010, Skype Limited. All rights reserved. +Redistribution and use in source and binary forms, with or without +modification, (subject to the limitations in the disclaimer below) +are permitted provided that the following conditions are met: +- Redistributions of source code must retain the above copyright notice, +this list of conditions and the following disclaimer. +- Redistributions in binary form must reproduce the above copyright +notice, this list of conditions and the following disclaimer in the +documentation and/or other materials provided with the distribution. +- Neither the name of Skype Limited, nor the names of specific +contributors, may be used to endorse or promote products derived from +this software without specific prior written permission. +NO EXPRESS OR IMPLIED LICENSES TO ANY PARTY'S PATENT RIGHTS ARE GRANTED +BY THIS LICENSE.THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND +CONTRIBUTORS ''AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, +BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND +FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE +COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, +INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT +NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF +USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON +ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT +(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE +OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + +***********************************************************************/ + +/* * + * SKP_Silk_resample_2_1_coarse.c * + * * + * Upsample by a factor 2, coarser * + + + + + + * * + * Copyright 2006 (c), Skype Limited * + * Date: 060221 * + * */ +#include "SKP_Silk_SigProc_FIX.h" + +/* Upsample by a factor 2, coarser */ +void SKP_Silk_resample_2_1_coarse( + const SKP_int16 *in, /* I: 8 kHz signal [len] */ + SKP_int32 *S, /* I/O: State vector [4] */ + SKP_int16 *out, /* O: 16 kHz signal [2*len] */ + SKP_int32 *scratch, /* I: Scratch memory [3*len] */ + const SKP_int32 len /* I: Number of INPUT samples */ +) +{ + SKP_int32 k, idx; + + /* Coefficients for coarser 2-fold resampling */ + const SKP_int16 A20c[ 2 ] = { 2119, 16663 }; + const SKP_int16 A21c[ 2 ] = { 8050, 26861 }; + + /* Convert Q15 -> Q25 */ + for( k = 0; k < len; k++ ) { + scratch[ k ] = SKP_LSHIFT( (SKP_int32)in[ k ], 10 ); + } + + idx = SKP_LSHIFT( len, 1 ); + + /* Allpass filters */ + SKP_Silk_allpass_int( scratch, S, A20c[ 0 ], scratch + idx, len ); + SKP_Silk_allpass_int( scratch + idx, S + 1, A20c[ 1 ], scratch + len, len ); + + SKP_Silk_allpass_int( scratch, S + 2, A21c[ 0 ], scratch + idx, len ); + SKP_Silk_allpass_int( scratch + idx, S + 3, A21c[ 1 ], scratch, len ); + + /* Interleave two allpass outputs */ + for( k = 0; k < len; k++ ) { + idx = SKP_LSHIFT( k, 1 ); + out[ idx ] = (SKP_int16)SKP_SAT16( SKP_RSHIFT_ROUND( scratch[ k + len ], 10 ) ); + out[ idx + 1 ] = (SKP_int16)SKP_SAT16( SKP_RSHIFT_ROUND( scratch[ k ], 10 ) ); + } +} + + diff --git a/libs/silk/src/SKP_Silk_resample_2_3.c b/libs/silk/src/SKP_Silk_resample_2_3.c new file mode 100644 index 0000000000..d298a0c9ea --- /dev/null +++ b/libs/silk/src/SKP_Silk_resample_2_3.c @@ -0,0 +1,89 @@ + + +/*********************************************************************** + + + + + +Copyright (c) 2006-2010, Skype Limited. All rights reserved. +Redistribution and use in source and binary forms, with or without +modification, (subject to the limitations in the disclaimer below) +are permitted provided that the following conditions are met: +- Redistributions of source code must retain the above copyright notice, +this list of conditions and the following disclaimer. +- Redistributions in binary form must reproduce the above copyright +notice, this list of conditions and the following disclaimer in the +documentation and/or other materials provided with the distribution. +- Neither the name of Skype Limited, nor the names of specific +contributors, may be used to endorse or promote products derived from +this software without specific prior written permission. +NO EXPRESS OR IMPLIED LICENSES TO ANY PARTY'S PATENT RIGHTS ARE GRANTED +BY THIS LICENSE.THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND +CONTRIBUTORS ''AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, +BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND +FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE +COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, +INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT +NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF +USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON +ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT +(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE +OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + +***********************************************************************/ + +/* * + * File Name: SKP_Silk_resample_2_3.c * + * * + * Resamples by a factor 2/3 * + * * + * Copyright 2008 (c), Skype Limited * + * All rights reserved. * + * * + * Date: 081113 * + * */ + +#include "SKP_Silk_SigProc_FIX.h" + +#define OUT_SUBFR_LEN 80 + +/* Resamples by a factor 2/3 */ +void SKP_Silk_resample_2_3( + SKP_int16 *out, /* O: Fs_low signal [inLen * 2/3] */ + SKP_int32 *S, /* I/O: State vector [7+4] */ + const SKP_int16 *in, /* I: Fs_high signal [inLen] */ + const SKP_int inLen /* I: Input length, must be a multiple of 3 */ + + + + + +) +{ + SKP_int outLen, LSubFrameIn, LSubFrameOut; + SKP_int16 outH[ 3 * OUT_SUBFR_LEN ]; + SKP_int32 scratch[ ( 9 * OUT_SUBFR_LEN ) / 2 ]; + + /* Check that input length is multiple of 3 */ + SKP_assert( inLen % 3 == 0 ); + + outLen = SKP_DIV32_16( SKP_LSHIFT( inLen, 1 ), 3 ); + while( outLen > 0 ) { + LSubFrameOut = SKP_min_int( OUT_SUBFR_LEN, outLen ); + LSubFrameIn = SKP_SMULWB( 98304, LSubFrameOut ); /* 98304_Q16 = 3/2_Q0 */ + + /* Upsample by a factor 2 */ + /* Scratch size needs to be: 3 * LSubFrameIn * sizeof( SKP_int32 ) */ + SKP_Silk_resample_2_1_coarse( in, &S[ 0 ], outH, scratch, LSubFrameIn ); + + /* Downsample by a factor 3 */ + SKP_Silk_resample_1_3( out, &S[ 4 ], outH, SKP_LSHIFT( LSubFrameIn, 1 ) ); + + in += LSubFrameIn; + out += LSubFrameOut; + outLen -= LSubFrameOut; + } +} + + diff --git a/libs/silk/src/SKP_Silk_resample_2_3_coarse.c b/libs/silk/src/SKP_Silk_resample_2_3_coarse.c new file mode 100644 index 0000000000..4ce8ef2eff --- /dev/null +++ b/libs/silk/src/SKP_Silk_resample_2_3_coarse.c @@ -0,0 +1,130 @@ + + +/*********************************************************************** + +Copyright (c) 2006-2010, Skype Limited. All rights reserved. +Redistribution and use in source and binary forms, with or without +modification, (subject to the limitations in the disclaimer below) +are permitted provided that the following conditions are met: +- Redistributions of source code must retain the above copyright notice, +this list of conditions and the following disclaimer. +- Redistributions in binary form must reproduce the above copyright +notice, this list of conditions and the following disclaimer in the +documentation and/or other materials provided with the distribution. +- Neither the name of Skype Limited, nor the names of specific +contributors, may be used to endorse or promote products derived from +this software without specific prior written permission. +NO EXPRESS OR IMPLIED LICENSES TO ANY PARTY'S PATENT RIGHTS ARE GRANTED +BY THIS LICENSE.THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND +CONTRIBUTORS ''AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, + + + + + +BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND +FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE +COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, +INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT +NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF +USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON +ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT +(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE +OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + +***********************************************************************/ + +/* * + * File Name: SKP_Silk_resample_2_3_coarse.c * + * * + * Description: Linear phase FIR polyphase implementation of resampling * + * * + * Copyright 2009 (c), Skype Limited * + * All rights reserved. * + * * + * Date: 090423 * + * */ + +#include "SKP_Silk_SigProc_FIX.h" +#include "SKP_Silk_resample_rom.h" + +/* Resamples input data with a factor 2/3 */ +void SKP_Silk_resample_2_3_coarse( + SKP_int16 *out, /* O: Output signal */ + SKP_int16 *S, /* I/O: Resampler state [ SigProc_Resample_2_3_coarse_NUM_FIR_COEFS - 1 ] */ + const SKP_int16 *in, /* I: Input signal */ + const SKP_int frameLenIn, /* I: Number of input samples */ + SKP_int16 *scratch /* I: Scratch memory [ frameLenIn + SigProc_Resample_2_3_coarse_NUM_FIR_COEFS - 1 ] */ +) +{ + SKP_int32 n, ind, interpol_ind, tmp, index_Q16; + SKP_int16 *in_ptr; + SKP_int frameLenOut; + const SKP_int16 *interpol_ptr; + + /* Copy buffered samples to start of scratch */ + SKP_memcpy( scratch, S, ( SigProc_Resample_2_3_coarse_NUM_FIR_COEFS - 1 ) * sizeof( SKP_int16 ) ); + + /* Then append by the input signal */ + SKP_memcpy( &scratch[ SigProc_Resample_2_3_coarse_NUM_FIR_COEFS - 1 ], in, frameLenIn * sizeof( SKP_int16 ) ); + + frameLenOut = SKP_DIV32_16( SKP_MUL( 2, frameLenIn ), 3 ); + index_Q16 = 0; + + + + + + SKP_assert( frameLenIn == ( ( frameLenOut * 3 ) / 2 ) ); + + /* Interpolate */ + for( n = frameLenOut; n > 0; n-- ) { + + /* Integer part */ + ind = SKP_RSHIFT( index_Q16, 16 ); + + /* Pointer to buffered input */ + in_ptr = scratch + ind; + + /* Fractional part */ + interpol_ind = ( SKP_SMULWB( index_Q16, SigProc_Resample_2_3_coarse_NUM_INTERPOLATORS ) & + ( SigProc_Resample_2_3_coarse_NUM_INTERPOLATORS - 1 ) ); + + /* Pointer to FIR taps */ + interpol_ptr = SigProc_Resample_2_3_coarse_INTERPOL[ interpol_ind ]; + + /* Interpolate */ + /* Hardcoded for 32 FIR taps */ + SKP_assert( SigProc_Resample_2_3_coarse_NUM_FIR_COEFS == 32 ); + tmp = (SKP_int32)interpol_ptr[ 0 ] * in_ptr[ 0 ] + (SKP_int32)interpol_ptr[ 1 ] * in_ptr[ 1 ] + + (SKP_int32)interpol_ptr[ 2 ] * in_ptr[ 2 ] + (SKP_int32)interpol_ptr[ 3 ] * in_ptr[ 3 ] + + (SKP_int32)interpol_ptr[ 4 ] * in_ptr[ 4 ] + (SKP_int32)interpol_ptr[ 5 ] * in_ptr[ 5 ] + + (SKP_int32)interpol_ptr[ 6 ] * in_ptr[ 6 ] + (SKP_int32)interpol_ptr[ 7 ] * in_ptr[ 7 ] + + (SKP_int32)interpol_ptr[ 8 ] * in_ptr[ 8 ] + (SKP_int32)interpol_ptr[ 9 ] * in_ptr[ 9 ] + + (SKP_int32)interpol_ptr[ 10 ] * in_ptr[ 10 ] + (SKP_int32)interpol_ptr[ 11 ] * in_ptr[ 11 ] + + (SKP_int32)interpol_ptr[ 12 ] * in_ptr[ 12 ] + (SKP_int32)interpol_ptr[ 13 ] * in_ptr[ 13 ] + + (SKP_int32)interpol_ptr[ 14 ] * in_ptr[ 14 ] + (SKP_int32)interpol_ptr[ 15 ] * in_ptr[ 15 ] + + (SKP_int32)interpol_ptr[ 16 ] * in_ptr[ 16 ] + (SKP_int32)interpol_ptr[ 17 ] * in_ptr[ 17 ] + + (SKP_int32)interpol_ptr[ 18 ] * in_ptr[ 18 ] + (SKP_int32)interpol_ptr[ 19 ] * in_ptr[ 19 ] + + (SKP_int32)interpol_ptr[ 20 ] * in_ptr[ 20 ] + (SKP_int32)interpol_ptr[ 21 ] * in_ptr[ 21 ] + + (SKP_int32)interpol_ptr[ 22 ] * in_ptr[ 22 ] + (SKP_int32)interpol_ptr[ 23 ] * in_ptr[ 23 ] + + (SKP_int32)interpol_ptr[ 24 ] * in_ptr[ 24 ] + (SKP_int32)interpol_ptr[ 25 ] * in_ptr[ 25 ] + + (SKP_int32)interpol_ptr[ 26 ] * in_ptr[ 26 ] + (SKP_int32)interpol_ptr[ 27 ] * in_ptr[ 27 ] + + (SKP_int32)interpol_ptr[ 28 ] * in_ptr[ 28 ] + (SKP_int32)interpol_ptr[ 29 ] * in_ptr[ 29 ]; + + /* Round, saturate and store to output array */ + *out++ = (SKP_int16)SKP_SAT16( SKP_RSHIFT_ROUND( tmp, 15 ) ); + + /* Update index */ + index_Q16 += ( ( 1 << 16 ) + ( 1 << 15 ) ); // (3/2)_Q0; + } + + /* Move last part of input signal to the sample buffer to prepare for the next call */ + SKP_memcpy( S, &in[ frameLenIn - ( SigProc_Resample_2_3_coarse_NUM_FIR_COEFS - 1 ) ], + ( SigProc_Resample_2_3_coarse_NUM_FIR_COEFS - 1 ) * sizeof( SKP_int16 ) ); +} + + + + + diff --git a/libs/silk/src/SKP_Silk_resample_2_3_coarsest.c b/libs/silk/src/SKP_Silk_resample_2_3_coarsest.c new file mode 100644 index 0000000000..61e933abcb --- /dev/null +++ b/libs/silk/src/SKP_Silk_resample_2_3_coarsest.c @@ -0,0 +1,147 @@ + + +/*********************************************************************** + +Copyright (c) 2006-2010, Skype Limited. All rights reserved. +Redistribution and use in source and binary forms, with or without +modification, (subject to the limitations in the disclaimer below) +are permitted provided that the following conditions are met: +- Redistributions of source code must retain the above copyright notice, +this list of conditions and the following disclaimer. +- Redistributions in binary form must reproduce the above copyright +notice, this list of conditions and the following disclaimer in the +documentation and/or other materials provided with the distribution. +- Neither the name of Skype Limited, nor the names of specific +contributors, may be used to endorse or promote products derived from +this software without specific prior written permission. +NO EXPRESS OR IMPLIED LICENSES TO ANY PARTY'S PATENT RIGHTS ARE GRANTED +BY THIS LICENSE.THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND +CONTRIBUTORS ''AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, +BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND +FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE +COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, +INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT +NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF +USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON +ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT +(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE +OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + +***********************************************************************/ + +/* * + * File Name: SKP_Silk_resample_2_3_coarsest.c * + * * + * Description: Linear phase FIR polyphase implementation of resampling * + * * + * Copyright 2009 (c), Skype Limited * + * All rights reserved. * + * * + * Date: 090423 * + * */ + +#include "SKP_Silk_SigProc_FIX.h" +#include "SKP_Silk_resample_rom.h" + +/* Resamples input data with a factor 2/3 */ +void SKP_Silk_resample_2_3_coarsest( + + + + + + SKP_int16 *out, /* O: Output signal */ + SKP_int16 *S, /* I/O: Resampler state [ SigProc_Resample_2_3_coarsest_NUM_FIR_COEFS - 1 ] */ + const SKP_int16 *in, /* I: Input signal */ + const SKP_int frameLenIn, /* I: Number of input samples */ + SKP_int16 *scratch /* I: Scratch memory [ frameLenIn + SigProc_Resample_2_3_coarsest_NUM_FIR_COEFS - 1 ] */ +) +{ + SKP_int32 n, ind, interpol_ind, tmp, index_Q16; + SKP_int16 *in_ptr; + SKP_int frameLenOut; + const SKP_int16 *interpol_ptr; +#if ( EMBEDDED_ARM>=6 ) && defined (__GNUC__) + SKP_int32 in_val, interpol_val; +#endif + + /* Copy buffered samples to start of scratch */ + SKP_memcpy( scratch, S, ( SigProc_Resample_2_3_coarsest_NUM_FIR_COEFS - 1 ) * sizeof( SKP_int16 ) ); + + /* Then append by the input signal */ + SKP_memcpy( &scratch[ SigProc_Resample_2_3_coarsest_NUM_FIR_COEFS - 1 ], in, frameLenIn * sizeof( SKP_int16 ) ); + + frameLenOut = SKP_SMULWB( SKP_LSHIFT( (SKP_int32)frameLenIn, 1 ), 21846 ); // 21846_Q15 = (2/3)_Q0 rounded _up_ + index_Q16 = 0; + + SKP_assert( frameLenIn == ( ( frameLenOut * 3 ) / 2 ) ); + + /* Interpolate */ + for( n = frameLenOut; n > 0; n-- ) { + + /* Integer part */ + ind = SKP_RSHIFT( index_Q16, 16 ); + + /* Pointer to buffered input */ + in_ptr = scratch + ind; + + /* Fractional part */ + interpol_ind = ( SKP_SMULWB( index_Q16, SigProc_Resample_2_3_coarsest_NUM_INTERPOLATORS ) & + ( SigProc_Resample_2_3_coarsest_NUM_INTERPOLATORS - 1 ) ); + + /* Pointer to FIR taps */ + interpol_ptr = SigProc_Resample_2_3_coarsest_INTERPOL[ interpol_ind ]; + + /* Interpolate: Hardcoded for 10 FIR taps */ +#if ( EMBEDDED_ARM>=6 ) && defined (__GNUC__) /*It doesn't improve efficiency on iphone.*/ + /*tmp = SKP_SMUAD( *((SKP_int32 *)interpol_ptr)++, *((SKP_int32 *)in_ptr)++); + tmp = SKP_SMLAD( tmp, *((SKP_int32 *)interpol_ptr)++, *((SKP_int32 *)in_ptr)++); + tmp = SKP_SMLAD( tmp, *((SKP_int32 *)interpol_ptr), *((SKP_int32 *)in_ptr) );*/ + __asm__ __volatile__ ( "ldr %1, [%3], #4 \n\t" + + + + + + "ldr %2, [%4], #4 \n\t" + "smuad %0, %1, %2 \n\t" + "ldr %1, [%3], #4 \n\t" + "ldr %2, [%4], #4 \n\t" + "smlad %0, %1, %2, %0\n\t" + "ldr %1, [%3], #4 \n\t" + "ldr %2, [%4], #4 \n\t" + "smlad %0, %1, %2, %0\n\t" + "ldr %1, [%3], #4 \n\t" + "ldr %2, [%4], #4 \n\t" + "smlad %0, %1, %2, %0\n\t" + "ldr %1, [%3] \n\t" + "ldr %2, [%4] \n\t" + "smlad %0, %1, %2, %0\n\t" + : "=r" (tmp), "=r" (interpol_val), "=r" (in_val), "=r" (interpol_ptr), "=r" (in_ptr) + : "3" (interpol_ptr), "4" (in_ptr)); +#else + SKP_assert( SigProc_Resample_2_3_coarsest_NUM_FIR_COEFS == 10 ); + tmp = SKP_SMULBB( interpol_ptr[ 0 ], in_ptr[ 0 ] ); + tmp = SKP_SMLABB( tmp, interpol_ptr[ 1 ], in_ptr[ 1 ] ); + tmp = SKP_SMLABB( tmp, interpol_ptr[ 2 ], in_ptr[ 2 ] ); + tmp = SKP_SMLABB( tmp, interpol_ptr[ 3 ], in_ptr[ 3 ] ); + tmp = SKP_SMLABB( tmp, interpol_ptr[ 4 ], in_ptr[ 4 ] ); + tmp = SKP_SMLABB( tmp, interpol_ptr[ 5 ], in_ptr[ 5 ] ); + tmp = SKP_SMLABB( tmp, interpol_ptr[ 6 ], in_ptr[ 6 ] ); + tmp = SKP_SMLABB( tmp, interpol_ptr[ 7 ], in_ptr[ 7 ] ); + tmp = SKP_SMLABB( tmp, interpol_ptr[ 8 ], in_ptr[ 8 ] ); + tmp = SKP_SMLABB( tmp, interpol_ptr[ 9 ], in_ptr[ 9 ] ); +#endif + /* Round, saturate and store to output array */ + *out++ = (SKP_int16)SKP_SAT16( SKP_RSHIFT_ROUND( tmp, 15 ) ); + + /* Update index */ + index_Q16 += ( ( 1 << 16 ) + ( 1 << 15 ) ); // (3/2)_Q0; + } + + /* Move last part of input signal to the sample buffer to prepare for the next call */ + SKP_memcpy( S, &in[ frameLenIn - ( SigProc_Resample_2_3_coarsest_NUM_FIR_COEFS - 1 ) ], + ( SigProc_Resample_2_3_coarsest_NUM_FIR_COEFS - 1 ) * sizeof( SKP_int16 ) ); +} + + diff --git a/libs/silk/src/SKP_Silk_resample_2_3_rom.c b/libs/silk/src/SKP_Silk_resample_2_3_rom.c new file mode 100644 index 0000000000..04611a53fc --- /dev/null +++ b/libs/silk/src/SKP_Silk_resample_2_3_rom.c @@ -0,0 +1,63 @@ + + +/*********************************************************************** + +Copyright (c) 2006-2010, Skype Limited. All rights reserved. + + + + + +Redistribution and use in source and binary forms, with or without +modification, (subject to the limitations in the disclaimer below) +are permitted provided that the following conditions are met: +- Redistributions of source code must retain the above copyright notice, +this list of conditions and the following disclaimer. +- Redistributions in binary form must reproduce the above copyright +notice, this list of conditions and the following disclaimer in the +documentation and/or other materials provided with the distribution. +- Neither the name of Skype Limited, nor the names of specific +contributors, may be used to endorse or promote products derived from +this software without specific prior written permission. +NO EXPRESS OR IMPLIED LICENSES TO ANY PARTY'S PATENT RIGHTS ARE GRANTED +BY THIS LICENSE.THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND +CONTRIBUTORS ''AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, +BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND +FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE +COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, +INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT +NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF +USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON +ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT +(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE +OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + +***********************************************************************/ + +/* * + * File Name: SKP_Silk_resample_2_3_rom.c * + * * + * Description: Filter coefficients for FIR polyphase resampling * + * * + * Copyright 2009 (c), Skype Limited * + * All rights reserved. * + * * + * Date: 090424 * + * */ + +#include "SKP_Silk_resample_rom.h" + +const SKP_int16 SigProc_Resample_2_3_coarse_INTERPOL[ SigProc_Resample_2_3_coarse_NUM_INTERPOLATORS ][ SigProc_Resample_2_3_coarse_NUM_FIR_COEFS ] = { + { 0, -74, 109, 0, -234, 329, 0, -610, 813, 0, -1437, 1954, 0, -4358, 8953, 21845, 8953, -4358, 0, 1954, -1437, 0, 813, -610, 0, 329, -234, 0, 109, -74, 0, 45 }, + { 48, -62, 0, 133, -195, 0, 386, -526, 0, 936, -1243, 0, 2311, -3417, 0, 18026, 18026, 0, -3417, 2311, 0, -1243, 936, 0, -526, 386, 0, -195, 133, 0, -62, 48 }, +}; + +const SKP_int16 SigProc_Resample_2_3_coarsest_INTERPOL[ SigProc_Resample_2_3_coarsest_NUM_INTERPOLATORS ][ SigProc_Resample_2_3_coarsest_NUM_FIR_COEFS ] = { + { 379, 0, -3081, 8239, 21845, 8239, -3081, 0, 379, -145 }, + { 0, 696, -1951, 0, 17659, 17659, 0, -1951, 696, 0 }, +}; + + + + + diff --git a/libs/silk/src/SKP_Silk_resample_3_1.c b/libs/silk/src/SKP_Silk_resample_3_1.c new file mode 100644 index 0000000000..2fa2fdd0d1 --- /dev/null +++ b/libs/silk/src/SKP_Silk_resample_3_1.c @@ -0,0 +1,116 @@ + + +/*********************************************************************** + +Copyright (c) 2006-2010, Skype Limited. All rights reserved. +Redistribution and use in source and binary forms, with or without +modification, (subject to the limitations in the disclaimer below) +are permitted provided that the following conditions are met: +- Redistributions of source code must retain the above copyright notice, +this list of conditions and the following disclaimer. +- Redistributions in binary form must reproduce the above copyright +notice, this list of conditions and the following disclaimer in the +documentation and/or other materials provided with the distribution. +- Neither the name of Skype Limited, nor the names of specific +contributors, may be used to endorse or promote products derived from +this software without specific prior written permission. +NO EXPRESS OR IMPLIED LICENSES TO ANY PARTY'S PATENT RIGHTS ARE GRANTED +BY THIS LICENSE.THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND +CONTRIBUTORS ''AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, +BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND +FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE +COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, +INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT +NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF +USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON +ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT +(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE +OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + +***********************************************************************/ + +/* * + * SKP_Silk_resample_3_1.c * + * * + * Upsamples by a factor 3 * + * * + * Copyright 2008 (c), Skype Limited * + * Date: 081113 * + * */ +#include "SKP_Silk_SigProc_FIX.h" + +#define IN_SUBFR_LEN_RESAMPLE_3_1 40 + +/* Resamples by a factor 3/1 */ +void SKP_Silk_resample_3_1( + SKP_int16 *out, /* O: Fs_high signal [inLen*3] */ + SKP_int32 *S, /* I/O: State vector [7] */ + + + + + + const SKP_int16 *in, /* I: Fs_low signal [inLen] */ + const SKP_int32 inLen /* I: Input length */ +) +{ + SKP_int k, LSubFrameIn, LSubFrameOut; + SKP_int32 out_tmp, idx, inLenTmp = inLen; + SKP_int32 scratch00[ IN_SUBFR_LEN_RESAMPLE_3_1 ]; + SKP_int32 scratch0[ 3 * IN_SUBFR_LEN_RESAMPLE_3_1 ]; + SKP_int32 scratch1[ 3 * IN_SUBFR_LEN_RESAMPLE_3_1 ]; + + /* Coefficients for 3-fold resampling */ + const SKP_int16 A30[ 2 ] = { 1773, 17818 }; + const SKP_int16 A31[ 2 ] = { 4942, 25677 }; + const SKP_int16 A32[ 2 ] = { 11786, 29304 }; + + while( inLenTmp > 0 ) { + LSubFrameIn = SKP_min_int( IN_SUBFR_LEN_RESAMPLE_3_1, inLenTmp ); + LSubFrameOut = SKP_SMULBB( 3, LSubFrameIn ); + + /* Convert Q15 -> Q25 */ + for( k = 0; k < LSubFrameIn; k++ ) { + scratch00[k] = SKP_LSHIFT( (SKP_int32)in[ k ], 10 ); + } + + /* Allpass filtering */ + /* Scratch size: 2 * 3* LSubFrame * sizeof(SKP_int32) */ + SKP_Silk_allpass_int( scratch00, S + 1, A30[ 0 ], scratch1, LSubFrameIn ); + SKP_Silk_allpass_int( scratch1, S + 2, A30[ 1 ], scratch0, LSubFrameIn ); + + SKP_Silk_allpass_int( scratch00, S + 3, A31[ 0 ], scratch1, LSubFrameIn ); + SKP_Silk_allpass_int( scratch1, S + 4, A31[ 1 ], scratch0 + IN_SUBFR_LEN_RESAMPLE_3_1, LSubFrameIn ); + + SKP_Silk_allpass_int( scratch00, S + 5, A32[ 0 ], scratch1, LSubFrameIn ); + SKP_Silk_allpass_int( scratch1, S + 6, A32[ 1 ], scratch0 + 2 * IN_SUBFR_LEN_RESAMPLE_3_1, LSubFrameIn ); + + /* Interleave three allpass outputs */ + for( k = 0; k < LSubFrameIn; k++ ) { + idx = SKP_SMULBB( 3, k ); + scratch1[ idx ] = scratch0[ k ]; + scratch1[ idx + 1 ] = scratch0[ k + IN_SUBFR_LEN_RESAMPLE_3_1 ]; + scratch1[ idx + 2 ] = scratch0[ k + 2 * IN_SUBFR_LEN_RESAMPLE_3_1 ]; + } + + /* Low-pass filtering */ + SKP_Silk_lowpass_int( scratch1, S, scratch0, LSubFrameOut ); + + /* Saturate and convert to SKP_int16 */ + for( k = 0; k < LSubFrameOut; k++ ) { + + + + + + out_tmp = scratch0[ k ]; + out[ k ] = (SKP_int16) SKP_SAT16( SKP_RSHIFT_ROUND( out_tmp, 10 ) ); + } + + in += LSubFrameIn; + inLenTmp -= LSubFrameIn; + out += LSubFrameOut; + } +} + + diff --git a/libs/silk/src/SKP_Silk_resample_3_2.c b/libs/silk/src/SKP_Silk_resample_3_2.c new file mode 100644 index 0000000000..b148b4a5fa --- /dev/null +++ b/libs/silk/src/SKP_Silk_resample_3_2.c @@ -0,0 +1,84 @@ + + +/*********************************************************************** + +Copyright (c) 2006-2010, Skype Limited. All rights reserved. +Redistribution and use in source and binary forms, with or without +modification, (subject to the limitations in the disclaimer below) +are permitted provided that the following conditions are met: +- Redistributions of source code must retain the above copyright notice, +this list of conditions and the following disclaimer. +- Redistributions in binary form must reproduce the above copyright +notice, this list of conditions and the following disclaimer in the +documentation and/or other materials provided with the distribution. +- Neither the name of Skype Limited, nor the names of specific +contributors, may be used to endorse or promote products derived from +this software without specific prior written permission. +NO EXPRESS OR IMPLIED LICENSES TO ANY PARTY'S PATENT RIGHTS ARE GRANTED +BY THIS LICENSE.THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND +CONTRIBUTORS ''AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, +BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND +FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE +COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, +INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT +NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF +USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON +ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT +(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE +OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + +***********************************************************************/ + +/* * + * File Name: SKP_Silk_resample_3_2.c * + * * + * Resamples by a factor 3/2 * + * * + + + + + + * Copyright 2008 (c), Skype Limited * + * All rights reserved. * + * * + * Date: 081113 * + * */ + +#include "SKP_Silk_SigProc_FIX.h" + +#define IN_SUBFR_LEN_RESAMPLE_3_2 80 + +/* Resamples by a factor 3/2 */ +void SKP_Silk_resample_3_2( + SKP_int16 *out, /* O: Fs_high signal [inLen*3/2] */ + SKP_int32 *S, /* I/O: State vector [7+4] */ + const SKP_int16 *in, /* I: Fs_low signal [inLen] */ + SKP_int inLen /* I: Input length, must be a multiple of 2 */ +) +{ + SKP_int LSubFrameIn, LSubFrameOut; + SKP_int16 outH[ 3 * IN_SUBFR_LEN_RESAMPLE_3_2 ]; + SKP_int32 scratch[ ( 9 * IN_SUBFR_LEN_RESAMPLE_3_2 ) / 2 ]; + + /* Check that input is multiple of 2 */ + SKP_assert( inLen % 2 == 0 ); + + while( inLen > 0 ) { + LSubFrameIn = SKP_min_int( IN_SUBFR_LEN_RESAMPLE_3_2, inLen ); + LSubFrameOut = SKP_SMULWB( 98304, LSubFrameIn ); + + /* Upsample by a factor 3 */ + SKP_Silk_resample_3_1( outH, &S[ 0 ], in, LSubFrameIn ); + + /* Downsample by a factor 2 */ + /* Scratch size needs to be: 3 * LSubFrameOut * sizeof( SKP_int32 ) */ + SKP_Silk_resample_1_2_coarse( outH, &S[ 7 ], out, scratch, LSubFrameOut ); + + in += LSubFrameIn; + out += LSubFrameOut; + inLen -= LSubFrameIn; + } +} + + diff --git a/libs/silk/src/SKP_Silk_resample_3_2_rom.c b/libs/silk/src/SKP_Silk_resample_3_2_rom.c new file mode 100644 index 0000000000..ec2a39e617 --- /dev/null +++ b/libs/silk/src/SKP_Silk_resample_3_2_rom.c @@ -0,0 +1,62 @@ + + + + + + + + + +/*********************************************************************** + +Copyright (c) 2006-2010, Skype Limited. All rights reserved. +Redistribution and use in source and binary forms, with or without +modification, (subject to the limitations in the disclaimer below) +are permitted provided that the following conditions are met: +- Redistributions of source code must retain the above copyright notice, +this list of conditions and the following disclaimer. +- Redistributions in binary form must reproduce the above copyright +notice, this list of conditions and the following disclaimer in the +documentation and/or other materials provided with the distribution. +- Neither the name of Skype Limited, nor the names of specific +contributors, may be used to endorse or promote products derived from +this software without specific prior written permission. +NO EXPRESS OR IMPLIED LICENSES TO ANY PARTY'S PATENT RIGHTS ARE GRANTED +BY THIS LICENSE.THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND +CONTRIBUTORS ''AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, +BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND +FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE +COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, +INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT +NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF +USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON +ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT +(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE +OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + +***********************************************************************/ + +/* * + * File Name: SKP_Silk_resample_3_2_rom.c * + * * + * Description: Filter coefficients for FIR polyphase resampling * + * * + * Copyright 2009 (c), Skype Limited * + * All rights reserved. * + * * + * Date: 090424 * + * */ + +#include "SKP_Silk_resample_rom.h" + +const SKP_int16 SigProc_Resample_3_2_coarse_INTERPOL[ SigProc_Resample_3_2_coarse_NUM_INTERPOLATORS ][ SigProc_Resample_3_2_coarse_NUM_FIR_COEFS ] = { + { 0, 0, 0, 32768, 0, 0, 0, 0 }, + { -384, 1630, -5217, 26674, 12714, -3572, 1050, -236 }, + { -236, 1050, -3572, 12714, 26674, -5217, 1630, -384 }, +}; + + + + + + diff --git a/libs/silk/src/SKP_Silk_resample_3_4.c b/libs/silk/src/SKP_Silk_resample_3_4.c new file mode 100644 index 0000000000..460b55cde4 --- /dev/null +++ b/libs/silk/src/SKP_Silk_resample_3_4.c @@ -0,0 +1,90 @@ + + +/*********************************************************************** + +Copyright (c) 2006-2010, Skype Limited. All rights reserved. +Redistribution and use in source and binary forms, with or without +modification, (subject to the limitations in the disclaimer below) +are permitted provided that the following conditions are met: +- Redistributions of source code must retain the above copyright notice, +this list of conditions and the following disclaimer. +- Redistributions in binary form must reproduce the above copyright +notice, this list of conditions and the following disclaimer in the +documentation and/or other materials provided with the distribution. +- Neither the name of Skype Limited, nor the names of specific +contributors, may be used to endorse or promote products derived from +this software without specific prior written permission. +NO EXPRESS OR IMPLIED LICENSES TO ANY PARTY'S PATENT RIGHTS ARE GRANTED +BY THIS LICENSE.THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND +CONTRIBUTORS ''AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, +BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND +FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE +COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, +INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT +NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF +USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON +ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT +(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE +OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + +***********************************************************************/ + +/* * + * File Name: SKP_Silk_resample_3_4.c * + * * + * Resamples by a factor 3/4 * + * * + * Copyright 2009 (c), Skype Limited * + * All rights reserved. * + * * + * Date: 090408 * + * */ + +#include "SKP_Silk_SigProc_FIX.h" + +#define IN_SUBFR_LEN_RESAMPLE_3_4 80 + +/* Resamples by a factor 3/4 */ + + + + + +void SKP_Silk_resample_3_4( + SKP_int16 *out, /* O: Fs_high signal [inLen*3/4] */ + SKP_int32 *S, /* I/O: State vector [7+2+6] */ + const SKP_int16 *in, /* I: Fs_low signal [inLen] */ + SKP_int inLen /* I: Input length, must be a multiple of 4 */ +) +{ + SKP_int LSubFrameIn, LSubFrameOut; + SKP_int16 outH[ 3 * IN_SUBFR_LEN_RESAMPLE_3_4 ]; + SKP_int16 outL[ ( 3 * IN_SUBFR_LEN_RESAMPLE_3_4 ) / 2 ]; + SKP_int32 scratch[ ( 9 * IN_SUBFR_LEN_RESAMPLE_3_4 ) / 2 ]; + + /* Check that input is multiple of 4 */ + SKP_assert( inLen % 4 == 0 ); + + while( inLen > 0 ) { + LSubFrameIn = SKP_min_int( IN_SUBFR_LEN_RESAMPLE_3_4, inLen ); + LSubFrameOut = SKP_SMULWB( 49152, LSubFrameIn ); + + /* Upsample by a factor 3 */ + SKP_Silk_resample_3_1( outH, &S[ 0 ], in, LSubFrameIn ); + + /* Downsample by a factor 2 twice */ + /* Scratch size needs to be: 3 * 2 * LSubFrameOut * sizeof( SKP_int32 ) */ + /* I: state vector [2], scratch memory [3*len] */ + SKP_Silk_resample_1_2_coarsest( outH, &S[ 7 ], outL, scratch, SKP_LSHIFT( LSubFrameOut, 1 ) ); + + /* Scratch size needs to be: 3 * LSubFrameOut * sizeof( SKP_int32 ) */ + /* I: state vector [6], scratch memory [3*len] */ + SKP_Silk_resample_1_2_coarse( outL, &S[ 9 ], out, scratch, LSubFrameOut ); + + in += LSubFrameIn; + out += LSubFrameOut; + inLen -= LSubFrameIn; + } +} + + diff --git a/libs/silk/src/SKP_Silk_resample_4_3.c b/libs/silk/src/SKP_Silk_resample_4_3.c new file mode 100644 index 0000000000..c3d88ce1ac --- /dev/null +++ b/libs/silk/src/SKP_Silk_resample_4_3.c @@ -0,0 +1,93 @@ + + +/*********************************************************************** + +Copyright (c) 2006-2010, Skype Limited. All rights reserved. +Redistribution and use in source and binary forms, with or without +modification, (subject to the limitations in the disclaimer below) +are permitted provided that the following conditions are met: +- Redistributions of source code must retain the above copyright notice, + + + + + +this list of conditions and the following disclaimer. +- Redistributions in binary form must reproduce the above copyright +notice, this list of conditions and the following disclaimer in the +documentation and/or other materials provided with the distribution. +- Neither the name of Skype Limited, nor the names of specific +contributors, may be used to endorse or promote products derived from +this software without specific prior written permission. +NO EXPRESS OR IMPLIED LICENSES TO ANY PARTY'S PATENT RIGHTS ARE GRANTED +BY THIS LICENSE.THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND +CONTRIBUTORS ''AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, +BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND +FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE +COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, +INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT +NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF +USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON +ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT +(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE +OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + +***********************************************************************/ + +/* * + * File Name: SKP_Silk_resample_4_3.c * + * * + * Resamples by a factor 4/3 * + * * + * Copyright 2009 (c), Skype Limited * + * All rights reserved. * + * * + * Date: 090407 * + * */ + +#include "SKP_Silk_SigProc_FIX.h" + +#define OUT_SUBFR_LEN 80 + +/* Resamples by a factor 4/3 */ +void SKP_Silk_resample_4_3( + SKP_int16 *out, /* O: Fs_low signal [inLen * 4/3] */ + SKP_int32 *S, /* I/O: State vector [7+4+4] */ + const SKP_int16 *in, /* I: Fs_high signal [inLen] */ + const SKP_int inLen /* I: input length, must be a multiple of 3 */ +) +{ + SKP_int outLen, LSubFrameIn, LSubFrameOut; + SKP_int16 outH[ 3 * OUT_SUBFR_LEN ]; + SKP_int16 outHH[ 6 * OUT_SUBFR_LEN ]; + + + + + + SKP_int32 scratch[ 9 * OUT_SUBFR_LEN / 2 ]; + + /* Check that input is multiple of 3 */ + SKP_assert( inLen % 3 == 0 ); + + outLen = SKP_DIV32_16( SKP_LSHIFT( inLen, 2 ), 3 ); + while( outLen > 0 ) { + LSubFrameOut = SKP_min_int( OUT_SUBFR_LEN, outLen ); + LSubFrameIn = SKP_SMULWB( 49152, LSubFrameOut ); + + /* Upsample two times by a factor 2 */ + /* Scratch size needs to be: 3 * LSubFrameIn * sizeof( SKP_int32 ) */ + SKP_Silk_resample_2_1_coarse( in, &S[ 0 ], outH, scratch, LSubFrameIn ); + /* Scratch size needs to be: 6 * LSubFrameIn * sizeof( SKP_int32 ) */ + SKP_Silk_resample_2_1_coarse( outH, &S[ 4 ], outHH, scratch, SKP_LSHIFT( LSubFrameIn, 1 ) ); + + /* Downsample by a factor 3 */ + SKP_Silk_resample_1_3( out, &S[ 8 ], outHH, SKP_LSHIFT( LSubFrameIn, 2 ) ); + + in += LSubFrameIn; + out += LSubFrameOut; + outLen -= LSubFrameOut; + } +} + + diff --git a/libs/silk/src/SKP_Silk_resample_rom.h b/libs/silk/src/SKP_Silk_resample_rom.h new file mode 100644 index 0000000000..0e1362d84d --- /dev/null +++ b/libs/silk/src/SKP_Silk_resample_rom.h @@ -0,0 +1,123 @@ + + +/*********************************************************************** + +Copyright (c) 2006-2010, Skype Limited. All rights reserved. +Redistribution and use in source and binary forms, with or without +modification, (subject to the limitations in the disclaimer below) +are permitted provided that the following conditions are met: +- Redistributions of source code must retain the above copyright notice, +this list of conditions and the following disclaimer. +- Redistributions in binary form must reproduce the above copyright +notice, this list of conditions and the following disclaimer in the +documentation and/or other materials provided with the distribution. +- Neither the name of Skype Limited, nor the names of specific +contributors, may be used to endorse or promote products derived from +this software without specific prior written permission. +NO EXPRESS OR IMPLIED LICENSES TO ANY PARTY'S PATENT RIGHTS ARE GRANTED +BY THIS LICENSE.THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND +CONTRIBUTORS ''AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, +BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND +FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE + + + + + +COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, +INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT +NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF +USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON +ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT +(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE +OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + +***********************************************************************/ + +/* * + * File Name: SKP_Silk_resample_rom.h * + * * + * Description: Header file for FIR resampling of * + * 32 and 44 kHz input * + * * + * Copyright 2007 (c), Skype Limited * + * All rights reserved. * + * * + * Date: 070807 * + * */ + +#ifndef _SKP_SILK_FIX_RESAMPLE_ROM_H_ +#define _SKP_SILK_FIX_RESAMPLE_ROM_H_ + +#include "SKP_Silk_typedef.h" + +#ifdef __cplusplus +extern "C" +{ +#endif + +#define SigProc_Resample_bw_1_4_NUM_INTERPOLATORS_LOG2 7 +#define SigProc_Resample_bw_1_4_NUM_INTERPOLATORS (1 << SigProc_Resample_bw_1_4_NUM_INTERPOLATORS_LOG2) +#define SigProc_Resample_bw_1_4_NUM_FIR_COEFS 6 + +extern const SKP_int16 SigProc_Resample_bw_1_4_INTERPOL[SigProc_Resample_bw_1_4_NUM_INTERPOLATORS][SigProc_Resample_bw_1_4_NUM_FIR_COEFS]; + + +#define SigProc_Resample_bw_80_441_NUM_INTERPOLATORS_LOG2 6 +#define SigProc_Resample_bw_80_441_NUM_INTERPOLATORS (1 << SigProc_Resample_bw_80_441_NUM_INTERPOLATORS_LOG2) +#define SigProc_Resample_bw_80_441_NUM_FIR_COEFS 4 + +extern const SKP_int16 SigProc_Resample_bw_80_441_INTERPOL[SigProc_Resample_bw_80_441_NUM_INTERPOLATORS][SigProc_Resample_bw_80_441_NUM_FIR_COEFS]; + +#define SigProc_Resample_2_3_coarse_NUM_INTERPOLATORS 2 +#define SigProc_Resample_2_3_coarse_NUM_FIR_COEFS 32 + + + + + + +extern const SKP_int16 SigProc_Resample_2_3_coarse_INTERPOL[SigProc_Resample_2_3_coarse_NUM_INTERPOLATORS][SigProc_Resample_2_3_coarse_NUM_FIR_COEFS]; + +#define SigProc_Resample_2_3_coarsest_NUM_INTERPOLATORS 2 +#define SigProc_Resample_2_3_coarsest_NUM_FIR_COEFS 10 + +extern const SKP_int16 SigProc_Resample_2_3_coarsest_INTERPOL[SigProc_Resample_2_3_coarsest_NUM_INTERPOLATORS][SigProc_Resample_2_3_coarsest_NUM_FIR_COEFS]; + +#define SigProc_Resample_3_2_coarse_NUM_INTERPOLATORS 3 +#define SigProc_Resample_3_2_coarse_NUM_FIR_COEFS 8 + +extern const SKP_int16 SigProc_Resample_3_2_coarse_INTERPOL[SigProc_Resample_3_2_coarse_NUM_INTERPOLATORS][SigProc_Resample_3_2_coarse_NUM_FIR_COEFS]; + +#define SigProc_Resample_147_40_NUM_INTERPOLATORS 147 +#define SigProc_Resample_147_40_NUM_FIR_COEFS 20 + +extern const SKP_int16 SigProc_Resample_147_40_INTERPOL[SigProc_Resample_147_40_NUM_INTERPOLATORS][SigProc_Resample_147_40_NUM_FIR_COEFS]; + +#define SigProc_Resample_147_40_alt_NUM_INTERPOLATORS 147 +#define SigProc_Resample_147_40_alt_NUM_FIR_COEFS 10 + +extern const SKP_int16 SigProc_Resample_147_40_alt_INTERPOL[SigProc_Resample_147_40_alt_NUM_INTERPOLATORS][SigProc_Resample_147_40_alt_NUM_FIR_COEFS]; + +#define SigProc_Resample_147_40_coarse_NUM_INTERPOLATORS 147 +#define SigProc_Resample_147_40_coarse_NUM_FIR_COEFS 16 + +extern const SKP_int16 SigProc_Resample_147_40_coarse_INTERPOL[SigProc_Resample_147_40_coarse_NUM_INTERPOLATORS][SigProc_Resample_147_40_coarse_NUM_FIR_COEFS]; + +#define SigProc_Resample_40_147_NUM_INTERPOLATORS 40 +#define SigProc_Resample_40_147_NUM_FIR_COEFS 60 + +extern const SKP_int16 SigProc_Resample_40_147_INTERPOL[SigProc_Resample_40_147_NUM_INTERPOLATORS][SigProc_Resample_40_147_NUM_FIR_COEFS]; + +#define SigProc_Resample_40_147_coarse_NUM_INTERPOLATORS 40 +#define SigProc_Resample_40_147_coarse_NUM_FIR_COEFS 30 + +extern const SKP_int16 SigProc_Resample_40_147_coarse_INTERPOL[SigProc_Resample_40_147_coarse_NUM_INTERPOLATORS][SigProc_Resample_40_147_coarse_NUM_FIR_COEFS]; + +#ifdef __cplusplus +} +#endif + +#endif // _SKP_SILK_FIX_RESAMPLE_ROM_H_ + + diff --git a/libs/silk/src/SKP_Silk_residual_energy16_FIX.c b/libs/silk/src/SKP_Silk_residual_energy16_FIX.c new file mode 100644 index 0000000000..ec218af34c --- /dev/null +++ b/libs/silk/src/SKP_Silk_residual_energy16_FIX.c @@ -0,0 +1,119 @@ + + +/*********************************************************************** + + + + + +Copyright (c) 2006-2010, Skype Limited. All rights reserved. +Redistribution and use in source and binary forms, with or without +modification, (subject to the limitations in the disclaimer below) +are permitted provided that the following conditions are met: +- Redistributions of source code must retain the above copyright notice, +this list of conditions and the following disclaimer. +- Redistributions in binary form must reproduce the above copyright +notice, this list of conditions and the following disclaimer in the +documentation and/or other materials provided with the distribution. +- Neither the name of Skype Limited, nor the names of specific +contributors, may be used to endorse or promote products derived from +this software without specific prior written permission. +NO EXPRESS OR IMPLIED LICENSES TO ANY PARTY'S PATENT RIGHTS ARE GRANTED +BY THIS LICENSE.THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND +CONTRIBUTORS ''AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, +BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND +FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE +COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, +INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT +NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF +USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON +ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT +(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE +OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + +***********************************************************************/ + +#include "SKP_Silk_main_FIX.h" + +/* Residual energy: nrg = wxx - 2 * wXx * c + c' * wXX * c */ +SKP_int32 SKP_Silk_residual_energy16_covar_FIX( + const SKP_int16 *c, /* I Prediction vector */ + const SKP_int32 *wXX, /* I Correlation matrix */ + const SKP_int32 *wXx, /* I Correlation vector */ + SKP_int32 wxx, /* I Signal energy */ + SKP_int D, /* I Dimension */ + SKP_int cQ /* I Q value for c vector 0 - 15 */ +) +{ + SKP_int i, j, lshifts, Qxtra; + SKP_int32 c_max, w_max, tmp, tmp2, nrg; + SKP_int cn[ MAX_MATRIX_SIZE ]; + const SKP_int32 *pRow; + + /* Safety checks */ + SKP_assert( D >= 0 ); + SKP_assert( D <= 16 ); + SKP_assert( cQ > 0 ); + + + + + + SKP_assert( cQ < 16 ); + + lshifts = 16 - cQ; + Qxtra = lshifts; + + c_max = 0; + for( i = 0; i < D; i++ ) { + c_max = SKP_max_32( c_max, SKP_abs( (SKP_int32)c[ i ] ) ); + } + Qxtra = SKP_min_int( Qxtra, SKP_Silk_CLZ32( c_max ) - 17 ); + + w_max = SKP_max_32( wXX[ 0 ], wXX[ D * D - 1 ] ); + Qxtra = SKP_min_int( Qxtra, SKP_Silk_CLZ32( SKP_MUL( D, SKP_RSHIFT( SKP_SMULWB( w_max, c_max ), 4 ) ) ) - 5 ); + Qxtra = SKP_max_int( Qxtra, 0 ); + for( i = 0; i < D; i++ ) { + cn[ i ] = SKP_LSHIFT( (SKP_int)c[ i ], Qxtra ); + SKP_assert( SKP_abs(cn[i]) <= ( SKP_int16_MAX + 1 ) ); /* Check that SKP_SMLAWB can be used */ + } + lshifts -= Qxtra; + + /* Compute wxx - 2 * wXx * c */ + tmp = 0; + for( i = 0; i < D; i++ ) { + tmp = SKP_SMLAWB( tmp, wXx[ i ], cn[ i ] ); + } + nrg = SKP_RSHIFT( wxx, 1 + lshifts ) - tmp; /* Q: -lshifts - 1 */ + + /* Add c' * wXX * c, assuming wXX is symmetric */ + tmp2 = 0; + for( i = 0; i < D; i++ ) { + tmp = 0; + pRow = &wXX[ i * D ]; + for( j = i + 1; j < D; j++ ) { + tmp = SKP_SMLAWB( tmp, pRow[ j ], cn[ j ] ); + } + tmp = SKP_SMLAWB( tmp, SKP_RSHIFT( pRow[ i ], 1 ), cn[ i ] ); + tmp2 = SKP_SMLAWB( tmp2, tmp, cn[ i ] ); + } + nrg = SKP_ADD_LSHIFT32( nrg, tmp2, lshifts ); /* Q: -lshifts - 1 */ + + /* Keep one bit free always, because we add them for LSF interpolation */ + if( nrg < 1 ) { + nrg = 1; + } else if( nrg > SKP_RSHIFT( SKP_int32_MAX, lshifts + 2 ) ) { + nrg = SKP_int32_MAX >> 1; + } else { + nrg = SKP_LSHIFT( nrg, lshifts + 1 ); /* Q0 */ + } + + + + + + return nrg; + +} + + diff --git a/libs/silk/src/SKP_Silk_residual_energy_FIX.c b/libs/silk/src/SKP_Silk_residual_energy_FIX.c new file mode 100644 index 0000000000..1f9fa895e0 --- /dev/null +++ b/libs/silk/src/SKP_Silk_residual_energy_FIX.c @@ -0,0 +1,105 @@ + + +/*********************************************************************** + +Copyright (c) 2006-2010, Skype Limited. All rights reserved. +Redistribution and use in source and binary forms, with or without +modification, (subject to the limitations in the disclaimer below) +are permitted provided that the following conditions are met: +- Redistributions of source code must retain the above copyright notice, +this list of conditions and the following disclaimer. +- Redistributions in binary form must reproduce the above copyright +notice, this list of conditions and the following disclaimer in the +documentation and/or other materials provided with the distribution. +- Neither the name of Skype Limited, nor the names of specific +contributors, may be used to endorse or promote products derived from +this software without specific prior written permission. +NO EXPRESS OR IMPLIED LICENSES TO ANY PARTY'S PATENT RIGHTS ARE GRANTED +BY THIS LICENSE.THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND +CONTRIBUTORS ''AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, +BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND +FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE +COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, +INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT +NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF +USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON +ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT +(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE +OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + +***********************************************************************/ + +#include "SKP_Silk_main_FIX.h" + +/* Calculates residual energies of input subframes where all subframes have LPC_order */ +/* of preceeding samples */ +void SKP_Silk_residual_energy_FIX( + SKP_int32 nrgs[ NB_SUBFR ], /* O Residual energy per subframe */ + SKP_int nrgsQ[ NB_SUBFR ], /* O Q value per subframe */ + const SKP_int16 x[], /* I Input signal */ + const SKP_int16 a_Q12[ 2 ][ MAX_LPC_ORDER ],/* I AR coefs for each frame half */ + const SKP_int32 gains_Qx[ NB_SUBFR ], /* I Quantization gains in Qx */ + const SKP_int Qx, /* I Quantization gains Q value */ + + + + + + const SKP_int subfr_length, /* I Subframe length */ + const SKP_int LPC_order /* I LPC order */ +) +{ + SKP_int offset, i, j, rshift, lz1, lz2; + SKP_int16 *LPC_res_ptr, LPC_res[ ( MAX_FRAME_LENGTH + NB_SUBFR * MAX_LPC_ORDER ) / 2 ]; + const SKP_int16 *x_ptr; + SKP_int16 S[ MAX_LPC_ORDER ]; + SKP_int32 tmp32; + + x_ptr = x; + offset = LPC_order + subfr_length; + + /* Filter input to create the LPC residual for each frame half, and measure subframe energies */ + for( i = 0; i < 2; i++ ) { + /* Calculate half frame LPC residual signal including preceeding samples */ + SKP_memset( S, 0, LPC_order * sizeof( SKP_int16 ) ); + SKP_Silk_LPC_analysis_filter( x_ptr, a_Q12[ i ], S, LPC_res, ( NB_SUBFR >> 1 ) * offset, LPC_order ); + + /* Point to first subframe of the just calculated LPC residual signal */ + LPC_res_ptr = LPC_res + LPC_order; + for( j = 0; j < ( NB_SUBFR >> 1 ); j++ ) { + /* Measure subframe energy */ + SKP_Silk_sum_sqr_shift( &nrgs[ i * ( NB_SUBFR >> 1 ) + j ], &rshift, LPC_res_ptr, subfr_length ); + + /* Set Q values for the measured energy */ + nrgsQ[ i * ( NB_SUBFR >> 1 ) + j ] = -rshift; + + /* Move to next subframe */ + LPC_res_ptr += offset; + } + /* Move to next frame half */ + x_ptr += ( NB_SUBFR >> 1 ) * offset; + } + + /* Apply the squared subframe gains */ + for( i = 0; i < NB_SUBFR; i++ ) { + /* Fully upscale gains and energies */ + lz1 = SKP_Silk_CLZ32( nrgs[ i ] ) - 1; + lz2 = SKP_Silk_CLZ32( gains_Qx[ i ] ) - 1; + + tmp32 = SKP_LSHIFT32( gains_Qx[ i ], lz2 ); + + /* Find squared gains */ + tmp32 = SKP_SMMUL( tmp32, tmp32 ); // Q( 2 * ( Qx + lz2 ) - 32 ) + + /* Scale energies */ + nrgs[ i ] = SKP_SMMUL( tmp32, SKP_LSHIFT32( nrgs[ i ], lz1 ) ); // Q( nrgsQ[ i ] + lz1 + 2 * ( Qx + lz2 ) - 32 - 32 ) + + + + + + nrgsQ[ i ] += lz1 + 2 * ( Qx + lz2 ) - 32 - 32; + } +} + + diff --git a/libs/silk/src/SKP_Silk_scale_copy_vector16.c b/libs/silk/src/SKP_Silk_scale_copy_vector16.c new file mode 100644 index 0000000000..e7be24dbfc --- /dev/null +++ b/libs/silk/src/SKP_Silk_scale_copy_vector16.c @@ -0,0 +1,100 @@ + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + +/*********************************************************************** + +Copyright (c) 2006-2010, Skype Limited. All rights reserved. +Redistribution and use in source and binary forms, with or without +modification, (subject to the limitations in the disclaimer below) +are permitted provided that the following conditions are met: +- Redistributions of source code must retain the above copyright notice, +this list of conditions and the following disclaimer. +- Redistributions in binary form must reproduce the above copyright +notice, this list of conditions and the following disclaimer in the +documentation and/or other materials provided with the distribution. +- Neither the name of Skype Limited, nor the names of specific +contributors, may be used to endorse or promote products derived from +this software without specific prior written permission. +NO EXPRESS OR IMPLIED LICENSES TO ANY PARTY'S PATENT RIGHTS ARE GRANTED +BY THIS LICENSE.THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND +CONTRIBUTORS ''AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, +BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND +FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE +COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, +INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT +NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF +USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON +ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT +(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE +OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + +***********************************************************************/ + +#include "SKP_Silk_SigProc_FIX.h" + +/* Copy and multiply a vector by a constant */ +void SKP_Silk_scale_copy_vector16( + SKP_int16 *data_out, + const SKP_int16 *data_in, + SKP_int32 gain_Q16, /* (I): gain in Q16 */ + const SKP_int dataSize /* (I): length */ +) +{ + SKP_int i; + SKP_int32 tmp32; + + for( i = 0; i < dataSize; i++ ) { + tmp32 = SKP_SMULWB( gain_Q16, data_in[ i ] ); + data_out[ i ] = (SKP_int16)SKP_CHECK_FIT16( tmp32 ); + } +} + + + + + + diff --git a/libs/silk/src/SKP_Silk_scale_vector.c b/libs/silk/src/SKP_Silk_scale_vector.c new file mode 100644 index 0000000000..ce8fa960ec --- /dev/null +++ b/libs/silk/src/SKP_Silk_scale_vector.c @@ -0,0 +1,137 @@ + + +/*********************************************************************** + +Copyright (c) 2006-2010, Skype Limited. All rights reserved. +Redistribution and use in source and binary forms, with or without +modification, (subject to the limitations in the disclaimer below) +are permitted provided that the following conditions are met: +- Redistributions of source code must retain the above copyright notice, +this list of conditions and the following disclaimer. +- Redistributions in binary form must reproduce the above copyright +notice, this list of conditions and the following disclaimer in the +documentation and/or other materials provided with the distribution. +- Neither the name of Skype Limited, nor the names of specific +contributors, may be used to endorse or promote products derived from +this software without specific prior written permission. +NO EXPRESS OR IMPLIED LICENSES TO ANY PARTY'S PATENT RIGHTS ARE GRANTED +BY THIS LICENSE.THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND +CONTRIBUTORS ''AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, +BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND +FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE +COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, +INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT +NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF +USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON +ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT +(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE +OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + +***********************************************************************/ + +#include "SKP_Silk_SigProc_FIX.h" + +/* Multiply a vector by a constant */ +void SKP_Silk_scale_vector16_Q14( + SKP_int16 *data1, + SKP_int gain_Q14, /* Gain in Q14 */ + SKP_int dataSize +) +{ + SKP_int i; + SKP_int32 data32, gain_Q16; + + SKP_assert( gain_Q14 < 32768 ); + SKP_assert( gain_Q14 >= -32768 ); + + gain_Q16 = SKP_LSHIFT( gain_Q14, 2 ); + + + + + + if( (SKP_int32)( (SKP_int_ptr_size)data1 & 3 ) != 0 ) { + /* Input is not 4-byte aligned */ + data1[ 0 ] = SKP_SMULWB( gain_Q16, data1[ 0 ] ); + i = 1; + } else { + i = 0; + } + dataSize--; + for( ; i < dataSize; i += 2 ) { + data32 = *( (SKP_int32 *)&data1[ i ] ); /* load two values at once */ + data1[ i ] = SKP_SMULWB( gain_Q16, data32 ); + data1[ i + 1 ] = SKP_SMULWT( gain_Q16, data32 ); + } + if( i == dataSize ) { + /* One sample left to process */ + data1[ i ] = SKP_SMULWB( gain_Q16, data1[ i ] ); + } +} + +/* Multiply a vector by a constant */ +void SKP_Silk_scale_vector32_Q26_lshift_18( + SKP_int32 *data1, /* (I/O): Q0/Q18 */ + SKP_int32 gain_Q26, /* (I): Q26 */ + SKP_int dataSize /* (I): length */ +) +{ + SKP_int i; + + for( i = 0; i < dataSize; i++ ) { + data1[ i ] = (SKP_int32)SKP_CHECK_FIT32( SKP_RSHIFT64( SKP_SMULL( data1[ i ], gain_Q26 ), 8 ) );// OUTPUT: Q18 + } +} + +/* Multiply a vector by a constant */ +void SKP_Silk_scale_vector32_16_Q14( + SKP_int32 *data1, /* (I/O): Q0/Q0 */ + SKP_int gain_Q14, /* (I): Q14 */ + SKP_int dataSize /* (I): length */ +) +{ + SKP_int i, gain_Q16; + + if( gain_Q14 < ( SKP_int16_MAX >> 2 ) ) { + gain_Q16 = SKP_LSHIFT( gain_Q14, 2 ); + for( i = 0; i < dataSize; i++ ) { + data1[ i ] = SKP_SMULWB( data1[ i ], gain_Q16 ); + } + } else { + + + + + + SKP_assert( gain_Q14 >= SKP_int16_MIN ); + for( i = 0; i < dataSize; i++ ) { + data1[ i ] = SKP_LSHIFT( SKP_SMULWB( data1[ i ], gain_Q14 ), 2 ); + } + } +} + +/* Multiply a vector by a constant, does not saturate output data */ +void SKP_Silk_scale_vector32_Q16( + SKP_int32 *data1, /* (I/O): Q0/Q0 */ + SKP_int32 gain_Q16, /* (I): gain in Q16 ( SKP_int16_MIN <= gain_Q16 <= SKP_int16_MAX + 65536 ) */ + const SKP_int dataSize /* (I): length */ +) +{ + SKP_int i; + + SKP_assert( gain_Q16 <= SKP_int16_MAX + 65536 ); + SKP_assert( gain_Q16 >= SKP_int16_MIN ); + + if( gain_Q16 > SKP_int16_MAX ) { + gain_Q16 -= 65536; + for( i = 0; i < dataSize; i++ ) { + data1[ i ] = SKP_SMLAWB( data1[ i ], data1[ i ], gain_Q16 ); + } + } else { + for( i = 0; i < dataSize; i++ ) { + data1[ i ] = SKP_SMULWB( data1[ i ], gain_Q16 ); + } + } +} + + diff --git a/libs/silk/src/SKP_Silk_schur.c b/libs/silk/src/SKP_Silk_schur.c new file mode 100644 index 0000000000..77f26c8f6a --- /dev/null +++ b/libs/silk/src/SKP_Silk_schur.c @@ -0,0 +1,107 @@ + + +/*********************************************************************** + +Copyright (c) 2006-2010, Skype Limited. All rights reserved. +Redistribution and use in source and binary forms, with or without +modification, (subject to the limitations in the disclaimer below) +are permitted provided that the following conditions are met: +- Redistributions of source code must retain the above copyright notice, +this list of conditions and the following disclaimer. +- Redistributions in binary form must reproduce the above copyright +notice, this list of conditions and the following disclaimer in the +documentation and/or other materials provided with the distribution. +- Neither the name of Skype Limited, nor the names of specific +contributors, may be used to endorse or promote products derived from + + + + + +this software without specific prior written permission. +NO EXPRESS OR IMPLIED LICENSES TO ANY PARTY'S PATENT RIGHTS ARE GRANTED +BY THIS LICENSE.THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND +CONTRIBUTORS ''AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, +BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND +FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE +COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, +INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT +NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF +USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON +ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT +(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE +OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + +***********************************************************************/ + +/* * + * SKP_Silk_schur.c * + * * + * Calculates the reflection coefficients from the correlation sequence * + * * + * Copyright 2008 (c), Skype Limited * + * Date: 080103 * + * */ +#include "SKP_Silk_SigProc_FIX.h" + +/* Faster than schur64(), but much less accurate. */ +/* uses SMLAWB(), requiring armv5E and higher. */ +void SKP_Silk_schur( + SKP_int16 *rc_Q15, /* O: reflection coefficients [order] Q15 */ + const SKP_int32 *c, /* I: correlations [order+1] */ + const SKP_int32 order /* I: prediction order */ +) +{ + SKP_int k, n, lz; + SKP_int32 C[ SigProc_MAX_ORDER_LPC + 1 ][ 2 ]; + SKP_int32 Ctmp1, Ctmp2, rc_tmp_Q15; + + /* Get number of leading zeros */ + lz = SKP_Silk_CLZ32( c[ 0 ] ); + + /* Copy correlations and adjust level to Q30 */ + if( lz < 2 ) { + /* lz must be 1, so shift one to the right */ + for( k = 0; k < order + 1; k++ ) { + C[ k ][ 0 ] = C[ k ][ 1 ] = SKP_RSHIFT( c[ k ], 1 ); + } + } else if( lz > 2 ) { + + + + + + /* Shift to the left */ + lz -= 2; + for( k = 0; k < order + 1; k++ ) { + C[ k ][ 0 ] = C[ k ][ 1 ] = SKP_LSHIFT( c[k], lz ); + } + } else { + /* No need to shift */ + for( k = 0; k < order + 1; k++ ) { + C[ k ][ 0 ] = C[ k ][ 1 ] = c[ k ]; + } + } + + for( k = 0; k < order; k++ ) { + + /* Get reflection coefficient */ + rc_tmp_Q15 = -SKP_DIV32_16( C[ k + 1 ][ 0 ], SKP_max_32( SKP_RSHIFT( C[ 0 ][ 1 ], 15 ), 1 ) ); + + /* Clip (shouldn't happen for properly conditioned inputs) */ + rc_tmp_Q15 = SKP_SAT16( rc_tmp_Q15 ); + + /* Store */ + rc_Q15[ k ] = (SKP_int16)rc_tmp_Q15; + + /* Update correlations */ + for( n = 0; n < order - k; n++ ) { + Ctmp1 = C[ n + k + 1 ][ 0 ]; + Ctmp2 = C[ n ][ 1 ]; + C[ n + k + 1 ][ 0 ] = SKP_SMLAWB( Ctmp1, SKP_LSHIFT( Ctmp2, 1 ), rc_tmp_Q15 ); + C[ n ][ 1 ] = SKP_SMLAWB( Ctmp2, SKP_LSHIFT( Ctmp1, 1 ), rc_tmp_Q15 ); + } + } +} + + diff --git a/libs/silk/src/SKP_Silk_schur64.c b/libs/silk/src/SKP_Silk_schur64.c new file mode 100644 index 0000000000..4ecda1a2d0 --- /dev/null +++ b/libs/silk/src/SKP_Silk_schur64.c @@ -0,0 +1,96 @@ + + +/*********************************************************************** + +Copyright (c) 2006-2010, Skype Limited. All rights reserved. +Redistribution and use in source and binary forms, with or without +modification, (subject to the limitations in the disclaimer below) +are permitted provided that the following conditions are met: +- Redistributions of source code must retain the above copyright notice, +this list of conditions and the following disclaimer. +- Redistributions in binary form must reproduce the above copyright +notice, this list of conditions and the following disclaimer in the +documentation and/or other materials provided with the distribution. + + + + + +- Neither the name of Skype Limited, nor the names of specific +contributors, may be used to endorse or promote products derived from +this software without specific prior written permission. +NO EXPRESS OR IMPLIED LICENSES TO ANY PARTY'S PATENT RIGHTS ARE GRANTED +BY THIS LICENSE.THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND +CONTRIBUTORS ''AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, +BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND +FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE +COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, +INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT +NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF +USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON +ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT +(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE +OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + +***********************************************************************/ + +/* * + * SKP_Silk_schur64.c * + * * + * Calculates the reflection coefficients from the correlation sequence * + * using extra precision * + * * + * Copyright 2008 (c), Skype Limited * + * Date: 080103 * + * */ +#include "SKP_Silk_SigProc_FIX.h" + +/* Slower than schur(), but more accurate. */ +/* Uses SMULL(), available on armv4 */ +SKP_int32 SKP_Silk_schur64( /* O: Returns residual energy */ + SKP_int32 rc_Q16[], /* O: Reflection coefficients [order] Q16 */ + const SKP_int32 c[], /* I: Correlations [order+1] */ + SKP_int32 order /* I: Prediction order */ +) +{ + SKP_int k, n; + SKP_int32 C[ SigProc_MAX_ORDER_LPC + 1 ][ 2 ]; + SKP_int32 Ctmp1_Q30, Ctmp2_Q30, rc_tmp_Q31; + + /* Check for invalid input */ + if( c[ 0 ] <= 0 ) { + SKP_memset( rc_Q16, 0, order * sizeof( SKP_int32 ) ); + return 0; + } + + for( k = 0; k < order + 1; k++ ) { + + + + + + C[ k ][ 0 ] = C[ k ][ 1 ] = c[ k ]; + } + + for( k = 0; k < order; k++ ) { + /* Get reflection coefficient: divide two Q30 values and get result in Q31 */ + rc_tmp_Q31 = SKP_DIV32_varQ( -C[ k + 1 ][ 0 ], C[ 0 ][ 1 ], 31 ); + + /* Save the output */ + rc_Q16[ k ] = SKP_RSHIFT_ROUND( rc_tmp_Q31, 15 ); + + /* Update correlations */ + for( n = 0; n < order - k; n++ ) { + Ctmp1_Q30 = C[ n + k + 1 ][ 0 ]; + Ctmp2_Q30 = C[ n ][ 1 ]; + + /* Multiply and add the highest int32 */ + C[ n + k + 1 ][ 0 ] = Ctmp1_Q30 + SKP_SMMUL( SKP_LSHIFT( Ctmp2_Q30, 1 ), rc_tmp_Q31 ); + C[ n ][ 1 ] = Ctmp2_Q30 + SKP_SMMUL( SKP_LSHIFT( Ctmp1_Q30, 1 ), rc_tmp_Q31 ); + } + } + + return( C[ 0 ][ 1 ] ); +} + + diff --git a/libs/silk/src/SKP_Silk_shell_coder.c b/libs/silk/src/SKP_Silk_shell_coder.c new file mode 100644 index 0000000000..e54ea44c38 --- /dev/null +++ b/libs/silk/src/SKP_Silk_shell_coder.c @@ -0,0 +1,175 @@ + + +/*********************************************************************** + +Copyright (c) 2006-2010, Skype Limited. All rights reserved. +Redistribution and use in source and binary forms, with or without +modification, (subject to the limitations in the disclaimer below) +are permitted provided that the following conditions are met: +- Redistributions of source code must retain the above copyright notice, +this list of conditions and the following disclaimer. +- Redistributions in binary form must reproduce the above copyright +notice, this list of conditions and the following disclaimer in the +documentation and/or other materials provided with the distribution. +- Neither the name of Skype Limited, nor the names of specific +contributors, may be used to endorse or promote products derived from +this software without specific prior written permission. +NO EXPRESS OR IMPLIED LICENSES TO ANY PARTY'S PATENT RIGHTS ARE GRANTED +BY THIS LICENSE.THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND +CONTRIBUTORS ''AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, +BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND +FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE +COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, + + + + + +INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT +NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF +USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON +ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT +(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE +OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + +***********************************************************************/ + +#include "SKP_Silk_main.h" + +/* shell coder; pulse-subframe length is hardcoded */ + +SKP_INLINE void combine_pulses( + SKP_int *out, /* O: combined pulses vector [len] */ + const SKP_int *in, /* I: input vector [2 * len] */ + const SKP_int len /* I: number of OUTPUT samples */ +) +{ + SKP_int k; + for( k = 0; k < len; k++ ) { + out[ k ] = in[ 2 * k ] + in[ 2 * k + 1 ]; + } +} + +SKP_INLINE void encode_split( + SKP_Silk_range_coder_state *sRC, /* I/O: compressor data structure */ + const SKP_int p_child1, /* I: pulse amplitude of first child subframe */ + const SKP_int p, /* I: pulse amplitude of current subframe */ + const SKP_uint16 *shell_table /* I: table of shell cdfs */ +) +{ + const SKP_uint16 *cdf; + + if( p > 0 ) { + cdf = &shell_table[ SKP_Silk_shell_code_table_offsets[ p ] ]; + SKP_Silk_range_encoder( sRC, p_child1, cdf ); + } +} + +SKP_INLINE void decode_split( + SKP_int *p_child1, /* O: pulse amplitude of first child subframe */ + SKP_int *p_child2, /* O: pulse amplitude of second child subframe */ + SKP_Silk_range_coder_state *sRC, /* I/O: compressor data structure */ + const SKP_int p, /* I: pulse amplitude of current subframe */ + const SKP_uint16 *shell_table /* I: table of shell cdfs */ +) +{ + + + + + + SKP_int cdf_middle; + const SKP_uint16 *cdf; + + if( p > 0 ) { + cdf_middle = SKP_RSHIFT( p, 1 ); + cdf = &shell_table[ SKP_Silk_shell_code_table_offsets[ p ] ]; + SKP_Silk_range_decoder( p_child1, sRC, cdf, cdf_middle ); + p_child2[ 0 ] = p - p_child1[ 0 ]; + } else { + p_child1[ 0 ] = 0; + p_child2[ 0 ] = 0; + } +} + +/* Shell encoder, operates on one shell code frame of 16 pulses */ +void SKP_Silk_shell_encoder( + SKP_Silk_range_coder_state *sRC, /* I/O compressor data structure */ + const SKP_int *pulses0 /* I data: nonnegative pulse amplitudes */ +) +{ + SKP_int pulses1[ 8 ], pulses2[ 4 ], pulses3[ 2 ], pulses4[ 1 ]; + + /* this function operates on one shell code frame of 16 pulses */ + SKP_assert( SHELL_CODEC_FRAME_LENGTH == 16 ); + + /* tree representation per pulse-subframe */ + combine_pulses( pulses1, pulses0, 8 ); + combine_pulses( pulses2, pulses1, 4 ); + combine_pulses( pulses3, pulses2, 2 ); + combine_pulses( pulses4, pulses3, 1 ); + + encode_split( sRC, pulses3[ 0 ], pulses4[ 0 ], SKP_Silk_shell_code_table3 ); + + encode_split( sRC, pulses2[ 0 ], pulses3[ 0 ], SKP_Silk_shell_code_table2 ); + + encode_split( sRC, pulses1[ 0 ], pulses2[ 0 ], SKP_Silk_shell_code_table1 ); + encode_split( sRC, pulses0[ 0 ], pulses1[ 0 ], SKP_Silk_shell_code_table0 ); + encode_split( sRC, pulses0[ 2 ], pulses1[ 1 ], SKP_Silk_shell_code_table0 ); + + encode_split( sRC, pulses1[ 2 ], pulses2[ 1 ], SKP_Silk_shell_code_table1 ); + encode_split( sRC, pulses0[ 4 ], pulses1[ 2 ], SKP_Silk_shell_code_table0 ); + encode_split( sRC, pulses0[ 6 ], pulses1[ 3 ], SKP_Silk_shell_code_table0 ); + + encode_split( sRC, pulses2[ 2 ], pulses3[ 1 ], SKP_Silk_shell_code_table2 ); + + encode_split( sRC, pulses1[ 4 ], pulses2[ 2 ], SKP_Silk_shell_code_table1 ); + encode_split( sRC, pulses0[ 8 ], pulses1[ 4 ], SKP_Silk_shell_code_table0 ); + encode_split( sRC, pulses0[ 10 ], pulses1[ 5 ], SKP_Silk_shell_code_table0 ); + + + + + + encode_split( sRC, pulses1[ 6 ], pulses2[ 3 ], SKP_Silk_shell_code_table1 ); + encode_split( sRC, pulses0[ 12 ], pulses1[ 6 ], SKP_Silk_shell_code_table0 ); + encode_split( sRC, pulses0[ 14 ], pulses1[ 7 ], SKP_Silk_shell_code_table0 ); +} + + +/* Shell decoder, operates on one shell code frame of 16 pulses */ +void SKP_Silk_shell_decoder( + SKP_int *pulses0, /* O data: nonnegative pulse amplitudes */ + SKP_Silk_range_coder_state *sRC, /* I/O compressor data structure */ + const SKP_int pulses4 /* I number of pulses per pulse-subframe */ +) +{ + SKP_int pulses3[ 2 ], pulses2[ 4 ], pulses1[ 8 ]; + + /* this function operates on one shell code frame of 16 pulses */ + SKP_assert( SHELL_CODEC_FRAME_LENGTH == 16 ); + + decode_split( &pulses3[ 0 ], &pulses3[ 1 ], sRC, pulses4, SKP_Silk_shell_code_table3 ); + + decode_split( &pulses2[ 0 ], &pulses2[ 1 ], sRC, pulses3[ 0 ], SKP_Silk_shell_code_table2 ); + + decode_split( &pulses1[ 0 ], &pulses1[ 1 ], sRC, pulses2[ 0 ], SKP_Silk_shell_code_table1 ); + decode_split( &pulses0[ 0 ], &pulses0[ 1 ], sRC, pulses1[ 0 ], SKP_Silk_shell_code_table0 ); + decode_split( &pulses0[ 2 ], &pulses0[ 3 ], sRC, pulses1[ 1 ], SKP_Silk_shell_code_table0 ); + + decode_split( &pulses1[ 2 ], &pulses1[ 3 ], sRC, pulses2[ 1 ], SKP_Silk_shell_code_table1 ); + decode_split( &pulses0[ 4 ], &pulses0[ 5 ], sRC, pulses1[ 2 ], SKP_Silk_shell_code_table0 ); + decode_split( &pulses0[ 6 ], &pulses0[ 7 ], sRC, pulses1[ 3 ], SKP_Silk_shell_code_table0 ); + + decode_split( &pulses2[ 2 ], &pulses2[ 3 ], sRC, pulses3[ 1 ], SKP_Silk_shell_code_table2 ); + + decode_split( &pulses1[ 4 ], &pulses1[ 5 ], sRC, pulses2[ 2 ], SKP_Silk_shell_code_table1 ); + decode_split( &pulses0[ 8 ], &pulses0[ 9 ], sRC, pulses1[ 4 ], SKP_Silk_shell_code_table0 ); + decode_split( &pulses0[ 10 ], &pulses0[ 11 ], sRC, pulses1[ 5 ], SKP_Silk_shell_code_table0 ); + + decode_split( &pulses1[ 6 ], &pulses1[ 7 ], sRC, pulses2[ 3 ], SKP_Silk_shell_code_table1 ); + decode_split( &pulses0[ 12 ], &pulses0[ 13 ], sRC, pulses1[ 6 ], SKP_Silk_shell_code_table0 ); + decode_split( &pulses0[ 14 ], &pulses0[ 15 ], sRC, pulses1[ 7 ], SKP_Silk_shell_code_table0 ); +} + + diff --git a/libs/silk/src/SKP_Silk_sigm_Q15.c b/libs/silk/src/SKP_Silk_sigm_Q15.c new file mode 100644 index 0000000000..cde8a6045f --- /dev/null +++ b/libs/silk/src/SKP_Silk_sigm_Q15.c @@ -0,0 +1,94 @@ + + +/*********************************************************************** + +Copyright (c) 2006-2010, Skype Limited. All rights reserved. + + + + + +Redistribution and use in source and binary forms, with or without +modification, (subject to the limitations in the disclaimer below) +are permitted provided that the following conditions are met: +- Redistributions of source code must retain the above copyright notice, +this list of conditions and the following disclaimer. +- Redistributions in binary form must reproduce the above copyright +notice, this list of conditions and the following disclaimer in the +documentation and/or other materials provided with the distribution. +- Neither the name of Skype Limited, nor the names of specific +contributors, may be used to endorse or promote products derived from +this software without specific prior written permission. +NO EXPRESS OR IMPLIED LICENSES TO ANY PARTY'S PATENT RIGHTS ARE GRANTED +BY THIS LICENSE.THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND +CONTRIBUTORS ''AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, +BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND +FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE +COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, +INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT +NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF +USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON +ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT +(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE +OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + +***********************************************************************/ + +/* * + * SKP_sigm_Q15.c * + * * + * Approximate sigmoid function * + * * + * Copyright 2006 (c), Skype Limited * + * Date: 060221 * + * */ +#include "SKP_Silk_SigProc_FIX.h" +/********************************/ +/* approximate sigmoid function */ +/********************************/ +/* fprintf(1, '%d, ', round(1024 * ([1 ./ (1 + exp(-(1:5))), 1] - 1 ./ (1 + exp(-(0:5)))))); */ +static const SKP_int32 sigm_LUT_slope_Q10[ 6 ] = { + 237, 153, 73, 30, 12, 7 +}; +/* fprintf(1, '%d, ', round(32767 * 1 ./ (1 + exp(-(0:5))))); */ +static const SKP_int32 sigm_LUT_pos_Q15[ 6 ] = { + 16384, 23955, 28861, 31213, 32178, 32548 +}; +/* fprintf(1, '%d, ', round(32767 * 1 ./ (1 + exp((0:5))))); */ +static const SKP_int32 sigm_LUT_neg_Q15[ 6 ] = { + + + + + + 16384, 8812, 3906, 1554, 589, 219 +}; + +SKP_int SKP_Silk_sigm_Q15( SKP_int in_Q5 ) +{ + SKP_int ind; + + if( in_Q5 < 0 ) { + /* Negative input */ + in_Q5 = -in_Q5; + if( in_Q5 >= 6 * 32 ) { + return 0; /* Clip */ + } else { + /* Linear interpolation of look up table */ + ind = SKP_RSHIFT( in_Q5, 5 ); + return( sigm_LUT_neg_Q15[ ind ] - SKP_SMULBB( sigm_LUT_slope_Q10[ ind ], in_Q5 & 0x1F ) ); + } + } else { + /* Positive input */ + if( in_Q5 >= 6 * 32 ) { + return 32767; /* clip */ + } else { + /* Linear interpolation of look up table */ + ind = SKP_RSHIFT( in_Q5, 5 ); + return( sigm_LUT_pos_Q15[ ind ] + SKP_SMULBB( sigm_LUT_slope_Q10[ ind ], in_Q5 & 0x1F ) ); + } + } +} + + + diff --git a/libs/silk/src/SKP_Silk_solve_LS_FIX.c b/libs/silk/src/SKP_Silk_solve_LS_FIX.c new file mode 100644 index 0000000000..7c0994c534 --- /dev/null +++ b/libs/silk/src/SKP_Silk_solve_LS_FIX.c @@ -0,0 +1,271 @@ + + +/*********************************************************************** + +Copyright (c) 2006-2010, Skype Limited. All rights reserved. +Redistribution and use in source and binary forms, with or without +modification, (subject to the limitations in the disclaimer below) +are permitted provided that the following conditions are met: +- Redistributions of source code must retain the above copyright notice, +this list of conditions and the following disclaimer. +- Redistributions in binary form must reproduce the above copyright +notice, this list of conditions and the following disclaimer in the +documentation and/or other materials provided with the distribution. +- Neither the name of Skype Limited, nor the names of specific +contributors, may be used to endorse or promote products derived from +this software without specific prior written permission. +NO EXPRESS OR IMPLIED LICENSES TO ANY PARTY'S PATENT RIGHTS ARE GRANTED +BY THIS LICENSE.THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND +CONTRIBUTORS ''AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, +BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND +FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE +COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, +INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT +NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF +USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON +ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT +(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE +OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + + + + + + +***********************************************************************/ + +#include "SKP_Silk_main_FIX.h" + +/*****************************/ +/* Internal function headers */ +/*****************************/ + +typedef struct { + SKP_int32 Q36_part; + SKP_int32 Q48_part; +} inv_D_t; + +/* Factorize square matrix A into LDL form */ +SKP_INLINE void SKP_Silk_LDL_factorize_FIX( + SKP_int32 *A, /* I/O Pointer to Symetric Square Matrix */ + SKP_int M, /* I Size of Matrix */ + SKP_int32 *L_Q16, /* I/O Pointer to Square Upper triangular Matrix */ + inv_D_t *inv_D /* I/O Pointer to vector holding inverted diagonal elements of D */ +); + +/* Solve Lx = b, when L is lower triangular and has ones on the diagonal */ +SKP_INLINE void SKP_Silk_LS_SolveFirst_FIX( + const SKP_int32 *L_Q16, /* I Pointer to Lower Triangular Matrix */ + SKP_int M, /* I Dim of Matrix equation */ + const SKP_int32 *b, /* I b Vector */ + SKP_int32 *x_Q16 /* O x Vector */ +); + +/* Solve L^t*x = b, where L is lower triangular with ones on the diagonal */ +SKP_INLINE void SKP_Silk_LS_SolveLast_FIX( + const SKP_int32 *L_Q16, /* I Pointer to Lower Triangular Matrix */ + const SKP_int M, /* I Dim of Matrix equation */ + const SKP_int32 *b, /* I b Vector */ + SKP_int32 *x_Q16 /* O x Vector */ +); + +SKP_INLINE void SKP_Silk_LS_divide_Q16_FIX( + SKP_int32 T[], /* I/O Numenator vector */ + inv_D_t *inv_D, /* I 1 / D vector */ + SKP_int M /* I dimension */ +); + +/* Solves Ax = b, assuming A is symmetric */ +void SKP_Silk_solve_LDL_FIX( + SKP_int32 *A, /* I Pointer to symetric square matrix A */ + SKP_int M, /* I Size of matrix */ + const SKP_int32 *b, /* I Pointer to b vector */ + + + + + + SKP_int32 *x_Q16 /* O Pointer to x solution vector */ +) +{ + SKP_int32 L_Q16[ MAX_MATRIX_SIZE * MAX_MATRIX_SIZE ]; + SKP_int32 Y[ MAX_MATRIX_SIZE ]; + inv_D_t inv_D[ MAX_MATRIX_SIZE ]; + + SKP_assert( M <= MAX_MATRIX_SIZE ); + + /*************************************************** + Factorize A by LDL such that A = L*D*L', + where L is lower triangular with ones on diagonal + ****************************************************/ + SKP_Silk_LDL_factorize_FIX( A, M, L_Q16, inv_D ); + + /**************************************************** + * substitute D*L'*x = Y. ie: + L*D*L'*x = b => L*Y = b <=> Y = inv(L)*b + ******************************************************/ + SKP_Silk_LS_SolveFirst_FIX( L_Q16, M, b, Y ); + + /**************************************************** + D*L'*x = Y <=> L'*x = inv(D)*Y, because D is + diagonal just multiply with 1/d_i + ****************************************************/ + SKP_Silk_LS_divide_Q16_FIX( Y, inv_D, M ); + + /**************************************************** + x = inv(L') * inv(D) * Y + *****************************************************/ + SKP_Silk_LS_SolveLast_FIX( L_Q16, M, Y, x_Q16 ); +} + +SKP_INLINE void SKP_Silk_LDL_factorize_FIX( + SKP_int32 *A, /* I Pointer to Symetric Square Matrix */ + SKP_int M, /* I Size of Matrix */ + SKP_int32 *L_Q16, /* I/O Pointer to Square Upper triangular Matrix */ + inv_D_t *inv_D /* I/O Pointer to vector holding inverted diagonal elements of D */ +) +{ + SKP_int i, j, k, status, loop_count; + const SKP_int32 *ptr1, *ptr2; + SKP_int32 diag_min_value, tmp_32, err; + SKP_int32 v_Q0[ MAX_MATRIX_SIZE ], D_Q0[ MAX_MATRIX_SIZE ]; + SKP_int32 one_div_diag_Q36, one_div_diag_Q40, one_div_diag_Q48; + + SKP_assert( M <= MAX_MATRIX_SIZE ); + + + + + + + status = 1; + diag_min_value = SKP_max_32( SKP_SMMUL( SKP_ADD_SAT32( A[ 0 ], A[ SKP_SMULBB( M, M ) - 1 ] ), FIND_LTP_COND_FAC_Q31 ), 1 << 9 ); + for( loop_count = 0; loop_count < M && status == 1; loop_count++ ) { + status = 0; + for( j = 0; j < M; j++ ) { + ptr1 = matrix_adr( L_Q16, j, 0, M ); + tmp_32 = 0; + for( i = 0; i < j; i++ ) { + v_Q0[ i ] = SKP_SMULWW( D_Q0[ i ], ptr1[ i ] ); /* Q0 */ + tmp_32 = SKP_SMLAWW( tmp_32, v_Q0[ i ], ptr1[ i ] ); /* Q0 */ + } + tmp_32 = SKP_SUB32( matrix_ptr( A, j, j, M ), tmp_32 ); + + if( tmp_32 < diag_min_value ) { + tmp_32 = SKP_SUB32( SKP_SMULBB( loop_count + 1, diag_min_value ), tmp_32 ); + /* Matrix not positive semi-definite, or ill conditioned */ + for( i = 0; i < M; i++ ) { + matrix_ptr( A, i, i, M ) = SKP_ADD32( matrix_ptr( A, i, i, M ), tmp_32 ); + } + status = 1; + break; + } + D_Q0[ j ] = tmp_32; /* always < max(Correlation) */ + + /* two-step division */ + one_div_diag_Q36 = SKP_INVERSE32_varQ( tmp_32, 36 ); /* Q36 */ + one_div_diag_Q40 = SKP_LSHIFT( one_div_diag_Q36, 4 ); /* Q40 */ + err = SKP_SUB32( 1 << 24, SKP_SMULWW( tmp_32, one_div_diag_Q40 ) ); /* Q24 */ + one_div_diag_Q48 = SKP_SMULWW( err, one_div_diag_Q40 ); /* Q48 */ + + /* Save 1/Ds */ + inv_D[ j ].Q36_part = one_div_diag_Q36; + inv_D[ j ].Q48_part = one_div_diag_Q48; + + matrix_ptr( L_Q16, j, j, M ) = 65536; /* 1.0 in Q16 */ + ptr1 = matrix_adr( A, j, 0, M ); + ptr2 = matrix_adr( L_Q16, j + 1, 0, M ); + for( i = j + 1; i < M; i++ ) { + tmp_32 = 0; + for( k = 0; k < j; k++ ) { + tmp_32 = SKP_SMLAWW( tmp_32, v_Q0[ k ], ptr2[ k ] ); /* Q0 */ + } + tmp_32 = SKP_SUB32( ptr1[ i ], tmp_32 ); /* always < max(Correlation) */ + + /* tmp_32 / D_Q0[j] : Divide to Q16 */ + matrix_ptr( L_Q16, i, j, M ) = SKP_ADD32( SKP_SMMUL( tmp_32, one_div_diag_Q48 ), + SKP_RSHIFT( SKP_SMULWW( tmp_32, one_div_diag_Q36 ), 4 ) ); + + + + + + + /* go to next column */ + ptr2 += M; + } + } + } + + SKP_assert( status == 0 ); +} + +SKP_INLINE void SKP_Silk_LS_divide_Q16_FIX( + SKP_int32 T[], /* I/O Numenator vector */ + inv_D_t *inv_D, /* I 1 / D vector */ + SKP_int M /* I Order */ +) +{ + SKP_int i; + SKP_int32 tmp_32; + SKP_int32 one_div_diag_Q36, one_div_diag_Q48; + + for( i = 0; i < M; i++ ) { + one_div_diag_Q36 = inv_D[ i ].Q36_part; + one_div_diag_Q48 = inv_D[ i ].Q48_part; + + tmp_32 = T[ i ]; + T[ i ] = SKP_ADD32( SKP_SMMUL( tmp_32, one_div_diag_Q48 ), SKP_RSHIFT( SKP_SMULWW( tmp_32, one_div_diag_Q36 ), 4 ) ); + } +} + +/* Solve Lx = b, when L is lower triangular and has ones on the diagonal */ +SKP_INLINE void SKP_Silk_LS_SolveFirst_FIX( + const SKP_int32 *L_Q16, /* I Pointer to Lower Triangular Matrix */ + SKP_int M, /* I Dim of Matrix equation */ + const SKP_int32 *b, /* I b Vector */ + SKP_int32 *x_Q16 /* O x Vector */ +) +{ + SKP_int i, j; + const SKP_int32 *ptr32; + SKP_int32 tmp_32; + + for( i = 0; i < M; i++ ) { + ptr32 = matrix_adr( L_Q16, i, 0, M ); + tmp_32 = 0; + for( j = 0; j < i; j++ ) { + tmp_32 = SKP_SMLAWW( tmp_32, ptr32[ j ], x_Q16[ j ] ); + } + x_Q16[ i ] = SKP_SUB32( b[ i ], tmp_32 ); + } + + + + + +} + +/* Solve L^t*x = b, where L is lower triangular with ones on the diagonal */ +SKP_INLINE void SKP_Silk_LS_SolveLast_FIX( + const SKP_int32 *L_Q16, /* I Pointer to Lower Triangular Matrix */ + const SKP_int M, /* I Dim of Matrix equation */ + const SKP_int32 *b, /* I b Vector */ + SKP_int32 *x_Q16 /* O x Vector */ +) +{ + SKP_int i, j; + const SKP_int32 *ptr32; + SKP_int32 tmp_32; + + for( i = M - 1; i >= 0; i-- ) { + ptr32 = matrix_adr( L_Q16, 0, i, M ); + tmp_32 = 0; + for( j = M - 1; j > i; j-- ) { + tmp_32 = SKP_SMLAWW( tmp_32, ptr32[ SKP_SMULBB( j, M ) ], x_Q16[ j ] ); + } + x_Q16[ i ] = SKP_SUB32( b[ i ], tmp_32 ); + } +} + + diff --git a/libs/silk/src/SKP_Silk_sort.c b/libs/silk/src/SKP_Silk_sort.c new file mode 100644 index 0000000000..d354d4e10d --- /dev/null +++ b/libs/silk/src/SKP_Silk_sort.c @@ -0,0 +1,220 @@ + + +/*********************************************************************** + +Copyright (c) 2006-2010, Skype Limited. All rights reserved. +Redistribution and use in source and binary forms, with or without +modification, (subject to the limitations in the disclaimer below) +are permitted provided that the following conditions are met: +- Redistributions of source code must retain the above copyright notice, +this list of conditions and the following disclaimer. +- Redistributions in binary form must reproduce the above copyright +notice, this list of conditions and the following disclaimer in the +documentation and/or other materials provided with the distribution. +- Neither the name of Skype Limited, nor the names of specific +contributors, may be used to endorse or promote products derived from +this software without specific prior written permission. +NO EXPRESS OR IMPLIED LICENSES TO ANY PARTY'S PATENT RIGHTS ARE GRANTED +BY THIS LICENSE.THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND +CONTRIBUTORS ''AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, +BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND +FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE +COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, + + + + + +INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT +NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF +USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON +ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT +(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE +OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + +***********************************************************************/ + +/* Insertion sort (fast for already almost sorted arrays): */ +/* Best case: O(n) for an already sorted array */ +/* Worst case: O(n^2) for an inversely sorted array */ +/* */ +/* To be implemented: */ +/* Shell short: http://en.wikipedia.org/wiki/Shell_sort */ + +#include "SKP_Silk_SigProc_FIX.h" + +void SKP_Silk_insertion_sort_increasing( + SKP_int32 *a, /* I/O: Unsorted / Sorted vector */ + SKP_int *index, /* O: Index vector for the sorted elements */ + const SKP_int L, /* I: Vector length */ + const SKP_int K /* I: Number of correctly sorted positions */ +) +{ + SKP_int32 value; + SKP_int i, j; + + /* Safety checks */ + SKP_assert( K > 0 ); + SKP_assert( L > 0 ); + SKP_assert( L >= K ); + + /* Write start indices in index vector */ + for( i = 0; i < K; i++ ) { + index[ i ] = i; + } + + /* Sort vector elements by value, increasing order */ + for( i = 1; i < K; i++ ) { + value = a[ i ]; + for( j = i - 1; ( j >= 0 ) && ( value < a[ j ] ); j-- ) { + a[ j + 1 ] = a[ j ]; /* Shift value */ + index[ j + 1 ] = index[ j ]; /* Shift index */ + } + a[ j + 1 ] = value; /* Write value */ + index[ j + 1 ] = i; /* Write index */ + } + + + + + + /* If less than L values are asked check the remaining values, */ + /* but only spend CPU to ensure that the K first values are correct */ + for( i = K; i < L; i++ ) { + value = a[ i ]; + if( value < a[ K - 1 ] ) { + for( j = K - 2; ( j >= 0 ) && ( value < a[ j ] ); j-- ) { + a[ j + 1 ] = a[ j ]; /* Shift value */ + index[ j + 1 ] = index[ j ]; /* Shift index */ + } + a[ j + 1 ] = value; /* Write value */ + index[ j + 1 ] = i; /* Write index */ + } + } +} + +void SKP_Silk_insertion_sort_decreasing( + SKP_int *a, /* I/O: Unsorted / Sorted vector */ + SKP_int *index, /* O: Index vector for the sorted elements */ + const SKP_int L, /* I: Vector length */ + const SKP_int K /* I: Number of correctly sorted positions */ +) +{ + SKP_int value; + SKP_int i, j; + + /* Safety checks */ + SKP_assert( K > 0 ); + SKP_assert( L > 0 ); + SKP_assert( L >= K ); + + /* Write start indices in index vector */ + for( i = 0; i < K; i++ ) { + index[ i ] = i; + } + + /* Sort vector elements by value, decreasing order */ + for( i = 1; i < K; i++ ) { + value = a[ i ]; + for( j = i - 1; ( j >= 0 ) && ( value > a[ j ] ); j-- ) { + a[ j + 1 ] = a[ j ]; /* Shift value */ + index[ j + 1 ] = index[ j ]; /* Shift index */ + } + a[ j + 1 ] = value; /* Write value */ + index[ j + 1 ] = i; /* Write index */ + } + + /* If less than L values are asked check the remaining values, */ + /* but only spend CPU to ensure that the K first values are correct */ + + + + + + for( i = K; i < L; i++ ) { + value = a[ i ]; + if( value > a[ K - 1 ] ) { + for( j = K - 2; ( j >= 0 ) && ( value > a[ j ] ); j-- ) { + a[ j + 1 ] = a[ j ]; /* Shift value */ + index[ j + 1 ] = index[ j ]; /* Shift index */ + } + a[ j + 1 ] = value; /* Write value */ + index[ j + 1 ] = i; /* Write index */ + } + } +} + +void SKP_Silk_insertion_sort_decreasing_int16( + SKP_int16 *a, /* I/O: Unsorted / Sorted vector */ + SKP_int *index, /* O: Index vector for the sorted elements */ + const SKP_int L, /* I: Vector length */ + const SKP_int K /* I: Number of correctly sorted positions */ +) +{ + SKP_int i, j; + SKP_int value; + + /* Safety checks */ + SKP_assert( K > 0 ); + SKP_assert( L > 0 ); + SKP_assert( L >= K ); + + /* Write start indices in index vector */ + for( i = 0; i < K; i++ ) { + index[ i ] = i; + } + + /* Sort vector elements by value, decreasing order */ + for( i = 1; i < K; i++ ) { + value = a[ i ]; + for( j = i - 1; ( j >= 0 ) && ( value > a[ j ] ); j-- ) { + a[ j + 1 ] = a[ j ]; /* Shift value */ + index[ j + 1 ] = index[ j ]; /* Shift index */ + } + a[ j + 1 ] = value; /* Write value */ + index[ j + 1 ] = i; /* Write index */ + } + + /* If less than L values are asked check the remaining values, */ + /* but only spend CPU to ensure that the K first values are correct */ + for( i = K; i < L; i++ ) { + value = a[ i ]; + + + + + + if( value > a[ K - 1 ] ) { + for( j = K - 2; ( j >= 0 ) && ( value > a[ j ] ); j-- ) { + a[ j + 1 ] = a[ j ]; /* Shift value */ + index[ j + 1 ] = index[ j ]; /* Shift index */ + } + a[ j + 1 ] = value; /* Write value */ + index[ j + 1 ] = i; /* Write index */ + } + } +} + +void SKP_Silk_insertion_sort_increasing_all_values( + SKP_int *a, /* I/O: Unsorted / Sorted vector */ + const SKP_int L /* I: Vector length */ +) +{ + SKP_int value; + SKP_int i, j; + + /* Safety checks */ + SKP_assert( L > 0 ); + + /* Sort vector elements by value, increasing order */ + for( i = 1; i < L; i++ ) { + value = a[ i ]; + for( j = i - 1; ( j >= 0 ) && ( value < a[ j ] ); j-- ) { + a[ j + 1 ] = a[ j ]; /* Shift value */ + } + a[ j + 1 ] = value; /* Write value */ + } +} + + + diff --git a/libs/silk/src/SKP_Silk_structs.h b/libs/silk/src/SKP_Silk_structs.h new file mode 100644 index 0000000000..b8adef6403 --- /dev/null +++ b/libs/silk/src/SKP_Silk_structs.h @@ -0,0 +1,426 @@ + + +/*********************************************************************** + +Copyright (c) 2006-2010, Skype Limited. All rights reserved. +Redistribution and use in source and binary forms, with or without +modification, (subject to the limitations in the disclaimer below) +are permitted provided that the following conditions are met: +- Redistributions of source code must retain the above copyright notice, +this list of conditions and the following disclaimer. +- Redistributions in binary form must reproduce the above copyright +notice, this list of conditions and the following disclaimer in the +documentation and/or other materials provided with the distribution. + + + + + +- Neither the name of Skype Limited, nor the names of specific +contributors, may be used to endorse or promote products derived from +this software without specific prior written permission. +NO EXPRESS OR IMPLIED LICENSES TO ANY PARTY'S PATENT RIGHTS ARE GRANTED +BY THIS LICENSE.THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND +CONTRIBUTORS ''AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, +BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND +FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE +COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, +INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT +NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF +USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON +ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT +(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE +OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + +***********************************************************************/ + +#ifndef SKP_SILK_STRUCTS_H +#define SKP_SILK_STRUCTS_H + +#include "SKP_Silk_typedef.h" +#include "SKP_Silk_SigProc_FIX.h" +#include "SKP_Silk_define.h" + +#ifdef __cplusplus +extern "C" +{ +#endif + + +/************************************/ +/* Noise shaping quantization state */ +/************************************/ +typedef struct { + SKP_int16 xq[ 2 * MAX_FRAME_LENGTH ]; /* Buffer for quantized output signal */ + SKP_int32 sLTP_shp_Q10[ 2 * MAX_FRAME_LENGTH ]; + SKP_int32 sLPC_Q14[ MAX_FRAME_LENGTH / NB_SUBFR + MAX_LPC_ORDER ]; + SKP_int32 sLF_AR_shp_Q12; + SKP_int lagPrev; + SKP_int sLTP_buf_idx; + SKP_int sLTP_shp_buf_idx; + SKP_int32 rand_seed; + SKP_int32 prev_inv_gain_Q16; + SKP_int rewhite_flag; +} SKP_Silk_nsq_state; /* FIX*/ + +/* Struct for Low BitRate Redundant (LBRR) information */ + + + + + +typedef struct { + SKP_uint8 payload[ MAX_ARITHM_BYTES ]; + SKP_int nBytes; /* Number of bytes in payload */ + SKP_int usage; /* Tells how the payload should be used as FEC */ +} SKP_SILK_LBRR_struct; + +/********************************/ +/* VAD state */ +/********************************/ +typedef struct { + SKP_int32 AnaState[ 2 ]; /* Analysis filterbank state: 0-8 kHz */ + SKP_int32 AnaState1[ 2 ]; /* Analysis filterbank state: 0-4 kHz */ + SKP_int32 AnaState2[ 2 ]; /* Analysis filterbank state: 0-2 kHz */ + SKP_int32 XnrgSubfr[ VAD_N_BANDS ]; /* Subframe energies */ + SKP_int32 NrgRatioSmth_Q8[ VAD_N_BANDS ]; /* Smoothed energy level in each band */ + SKP_int16 HPstate; /* State of differentiator in the lowest band */ + SKP_int32 NL[ VAD_N_BANDS ]; /* Noise energy level in each band */ + SKP_int32 inv_NL[ VAD_N_BANDS ]; /* Inverse noise energy level in each band */ + SKP_int32 NoiseLevelBias[ VAD_N_BANDS ]; /* Noise level estimator bias/offset */ + SKP_int32 counter; /* Frame counter used in the initial phase */ +} SKP_Silk_VAD_state; + +/*******************************/ +/* Range encoder/decoder state */ +/*******************************/ +typedef struct { + SKP_int32 bufferLength; + SKP_int32 bufferIx; + SKP_uint32 base_Q32; + SKP_uint32 range_Q16; + SKP_int32 error; + SKP_uint8 buffer[ MAX_ARITHM_BYTES ]; /* Buffer containing payload */ +} SKP_Silk_range_coder_state; + +/* Input frequency range detection struct */ +typedef struct { + SKP_int32 S_HP_8_kHz[NB_SOS][ 2 ]; /* HP filter State */ + SKP_int32 ConsecSmplsAboveThres; + SKP_int32 ActiveSpeech_ms; /* Accumulated time with active speech */ + SKP_int SWB_detected; /* Flag to indicate SWB input */ + SKP_int WB_detected; /* Flag to indicate WB input */ +} SKP_Silk_detect_SWB_state; + +#if SWITCH_TRANSITION_FILTERING +/* Variable cut-off low-pass filter state */ +typedef struct { + SKP_int32 In_LP_State[ 2 ]; /* Low pass filter state */ + SKP_int32 transition_frame_no; /* Counter which is mapped to a cut-off frequency */ + + + + + + SKP_int mode; /* Operating mode, 0: switch down, 1: switch up */ +} SKP_Silk_LP_state; +#endif + +/* structure for one stage of MSVQ */ +typedef struct { + const SKP_int32 nVectors; + const SKP_int16 *CB_NLSF_Q15; + const SKP_int16 *Rates_Q5; +} SKP_Silk_NLSF_CB_Stage_struct; + +/* Structure containing NLSF MSVQ codebook */ +typedef struct { + const SKP_int32 nStages; + + /* Fields for (de)quantizing */ + const SKP_Silk_NLSF_CB_Stage_struct *CBStages; + const SKP_int *NDeltaMin_Q15; + + /* Fields for arithmetic (de)coding */ + const SKP_uint16 *CDF; + const SKP_uint16 * const *StartPtr; + const SKP_int *MiddleIx; +} SKP_Silk_NLSF_CB_struct; + +/********************************/ +/* Encoder state */ +/********************************/ +typedef struct { + SKP_Silk_range_coder_state sRC; /* Range coder state */ + SKP_Silk_range_coder_state sRC_LBRR; /* Range coder state (for low bitrate redundancy) */ +#if HIGH_PASS_INPUT + SKP_int32 In_HP_State[ 2 ]; /* High pass filter state */ +#endif +#if SWITCH_TRANSITION_FILTERING + SKP_Silk_LP_state sLP; /* Low pass filter state */ +#endif + SKP_Silk_VAD_state sVAD; /* Voice activity detector state */ + + SKP_int LBRRprevLastGainIndex; + SKP_int prev_sigtype; + SKP_int typeOffsetPrev; /* Previous signal type and quantization offset */ + SKP_int prevLag; + SKP_int prev_lagIndex; + SKP_int fs_kHz; /* Sampling frequency (kHz) */ + SKP_int fs_kHz_changed; /* Did we switch yet? */ + SKP_int frame_length; /* Frame length (samples) */ + SKP_int subfr_length; /* Subframe length (samples) */ + + + + + + SKP_int la_pitch; /* Look-ahead for pitch analysis (samples) */ + SKP_int la_shape; /* Look-ahead for noise shape analysis (samples) */ + SKP_int32 TargetRate_bps; /* Target bitrate (bps) */ + SKP_int PacketSize_ms; /* Number of milliseconds to put in each packet */ + SKP_int PacketLoss_perc; /* Packet loss rate measured by farend */ + SKP_int32 frameCounter; + SKP_int Complexity; /* Complexity setting: 0-> low; 1-> medium; 2->high */ + SKP_int nStatesDelayedDecision; /* Number of states in delayed decision quantization */ + SKP_int useInterpolatedNLSFs; /* Flag for using NLSF interpolation */ + SKP_int shapingLPCOrder; /* Filter order for noise shaping filters */ + SKP_int predictLPCOrder; /* Filter order for prediction filters */ + SKP_int pitchEstimationComplexity; /* Complexity level for pitch estimator */ + SKP_int pitchEstimationLPCOrder; /* Whitening filter order for pitch estimator */ + SKP_int LTPQuantLowComplexity; /* Flag for low complexity LTP quantization */ + SKP_int NLSF_MSVQ_Survivors; /* Number of survivors in NLSF MSVQ */ + SKP_int first_frame_after_reset; /* Flag for deactivating NLSF interp. and fluc. reduction after resets */ + + /* Input/output buffering */ + SKP_int16 inputBuf[ MAX_FRAME_LENGTH ]; /* buffer containin input signal */ + SKP_int inputBufIx; + SKP_int nFramesInPayloadBuf; /* number of frames sitting in outputBuf */ + SKP_int nBytesInPayloadBuf; /* number of bytes sitting in outputBuf */ + + /* Parameters For LTP scaling Control */ + SKP_int frames_since_onset; + + const SKP_Silk_NLSF_CB_struct *psNLSF_CB[ 2 ]; /* Pointers to voiced/unvoiced NLSF codebooks */ + + /* Struct for Inband LBRR */ + SKP_SILK_LBRR_struct LBRR_buffer[ MAX_LBRR_DELAY ]; + SKP_int oldest_LBRR_idx; + SKP_int LBRR_enabled; + SKP_int LBRR_GainIncreases; /* Number of shifts to Gains to get LBRR rate Voiced frames */ + + /* Bitrate control */ + SKP_int32 bitrateDiff; /* accumulated diff. between the target bitrate and the SWB/WB limits */ + +#if LOW_COMPLEXITY_ONLY + /* state for downsampling from 24 to 16 kHz in low complexity mode */ + SKP_int16 resample24To16state[ SigProc_Resample_2_3_coarse_NUM_FIR_COEFS - 1 ]; +#else + SKP_int32 resample24To16state[ 11 ]; /* state for downsampling from 24 to 16 kHz */ +#endif + SKP_int32 resample24To12state[ 6 ]; /* state for downsampling from 24 to 12 kHz */ + SKP_int32 resample24To8state[ 7 ]; /* state for downsampling from 24 to 8 kHz */ + SKP_int32 resample16To12state[ 15 ]; /* state for downsampling from 16 to 12 kHz */ + SKP_int32 resample16To8state[ 6 ]; /* state for downsampling from 16 to 8 kHz */ +#if LOW_COMPLEXITY_ONLY + + + + + + /* state for downsampling from 12 to 8 kHz in low complexity mode */ + SKP_int16 resample12To8state[ SigProc_Resample_2_3_coarse_NUM_FIR_COEFS - 1 ]; +#else + SKP_int32 resample12To8state[ 11 ]; /* state for downsampling from 12 to 8 kHz */ +#endif + + /* DTX */ + SKP_int noSpeechCounter; /* Counts concecutive nonactive frames, used by DTX */ + SKP_int useDTX; /* Flag to enable DTX */ + SKP_int inDTX; /* Flag to signal DTX period */ + SKP_int vadFlag; /* Flag to indicate Voice Activity */ + + /* Struct for detecting SWB input */ + SKP_Silk_detect_SWB_state sSWBdetect; + + + /********************************************/ + /* Buffers etc used by the new bitstream V4 */ + /********************************************/ + SKP_int q[ MAX_FRAME_LENGTH * MAX_FRAMES_PER_PACKET ]; /* pulse signal buffer */ + SKP_int q_LBRR[ MAX_FRAME_LENGTH * MAX_FRAMES_PER_PACKET ]; /* pulse signal buffer */ + SKP_int sigtype[ MAX_FRAMES_PER_PACKET ]; + SKP_int QuantOffsetType[ MAX_FRAMES_PER_PACKET ]; + SKP_int extension_layer; /* Add extension layer */ + SKP_int bitstream_v; /* Holds bitstream version */ +} SKP_Silk_encoder_state; + + +/************************/ +/* Encoder control */ +/************************/ +typedef struct { + /* Quantization indices */ + SKP_int lagIndex; + SKP_int contourIndex; + SKP_int PERIndex; + SKP_int LTPIndex[ NB_SUBFR ]; + SKP_int NLSFIndices[ NLSF_MSVQ_MAX_CB_STAGES ]; /* NLSF path of quantized LSF vector */ + SKP_int NLSFInterpCoef_Q2; + SKP_int GainsIndices[ NB_SUBFR ]; + SKP_int32 Seed; + SKP_int LTP_scaleIndex; + SKP_int RateLevelIndex; + SKP_int QuantOffsetType; + SKP_int sigtype; + + /* Prediction and coding parameters */ + SKP_int pitchL[ NB_SUBFR ]; + + + + + + SKP_int LBRR_usage; /* Low bitrate redundancy usage */ +} SKP_Silk_encoder_control; + +/* Struct for Packet Loss Concealment */ +typedef struct { + SKP_int32 pitchL_Q8; /* Pitch lag to use for voiced concealment */ + SKP_int16 LTPCoef_Q14[ LTP_ORDER ]; /* LTP coeficients to use for voiced concealment */ + SKP_int16 prevLPC_Q12[ MAX_LPC_ORDER ]; + SKP_int last_frame_lost; /* Was previous frame lost */ + SKP_int32 rand_seed; /* Seed for unvoiced signal generation */ + SKP_int16 randScale_Q14; /* Scaling of unvoiced random signal */ + SKP_int32 conc_energy; + SKP_int conc_energy_shift; + SKP_int16 prevLTP_scale_Q14; + SKP_int32 prevGain_Q16[ NB_SUBFR ]; + SKP_int fs_kHz; +} SKP_Silk_PLC_struct; + +/* Struct for CNG */ +typedef struct { + SKP_int32 CNG_exc_buf_Q10[ MAX_FRAME_LENGTH ]; + SKP_int CNG_smth_NLSF_Q15[ MAX_LPC_ORDER ]; + SKP_int32 CNG_synth_state[ MAX_LPC_ORDER ]; + SKP_int32 CNG_smth_Gain_Q16; + SKP_int32 rand_seed; + SKP_int fs_kHz; +} SKP_Silk_CNG_struct; + +/********************************/ +/* Decoder state */ +/********************************/ +typedef struct { + SKP_Silk_range_coder_state sRC; /* Range coder state */ + SKP_int32 prev_inv_gain_Q16; + SKP_int32 sLTP_Q16[ 2 * MAX_FRAME_LENGTH ]; + SKP_int32 sLPC_Q14[ MAX_FRAME_LENGTH / NB_SUBFR + MAX_LPC_ORDER ]; + SKP_int32 exc_Q10[ MAX_FRAME_LENGTH ]; + SKP_int32 res_Q10[ MAX_FRAME_LENGTH ]; + SKP_int16 outBuf[ 2 * MAX_FRAME_LENGTH ]; /* Buffer for output signal */ + SKP_int sLTP_buf_idx; /* LTP_buf_index */ + SKP_int lagPrev; /* Previous Lag */ + SKP_int LastGainIndex; /* Previous gain index */ + SKP_int LastGainIndex_EnhLayer; /* Previous gain index */ + SKP_int typeOffsetPrev; /* Previous signal type and quantization offset */ + SKP_int32 HPState[ DEC_HP_ORDER ]; /* HP filter state */ + const SKP_int16 *HP_A; /* HP filter AR coefficients */ + const SKP_int16 *HP_B; /* HP filter MA coefficients */ + SKP_int fs_kHz; /* Sampling frequency in kHz */ + + + + + + SKP_int frame_length; /* Frame length (samples) */ + SKP_int subfr_length; /* Subframe length (samples) */ + SKP_int LPC_order; /* LPC order */ + SKP_int prevNLSF_Q15[ MAX_LPC_ORDER ]; /* Used to interpolate LSFs */ + SKP_int first_frame_after_reset; /* Flag for deactivating NLSF interp. and fluc. reduction after resets */ + + /* For buffering payload in case of more frames per packet */ + SKP_int nBytesLeft; + SKP_int nFramesDecoded; + SKP_int nFramesInPacket; + SKP_int InternalDecoderFrames; + SKP_int FrameTermination; + + SKP_int32 resampleState[ 15 ]; + + const SKP_Silk_NLSF_CB_struct *psNLSF_CB[ 2 ]; /* Pointers to voiced/unvoiced NLSF codebooks */ + + SKP_int sigtype[ MAX_FRAMES_PER_PACKET ]; + SKP_int QuantOffsetType[ MAX_FRAMES_PER_PACKET ]; + SKP_int GainsIndices[ MAX_FRAMES_PER_PACKET ][ NB_SUBFR ]; + SKP_int GainsIndices_EnhLayer[ MAX_FRAMES_PER_PACKET ][ NB_SUBFR ]; + SKP_int NLSFIndices[ MAX_FRAMES_PER_PACKET ][ NLSF_MSVQ_MAX_CB_STAGES ]; + SKP_int NLSFInterpCoef_Q2[ MAX_FRAMES_PER_PACKET ]; + SKP_int lagIndex[ MAX_FRAMES_PER_PACKET ]; + SKP_int contourIndex[ MAX_FRAMES_PER_PACKET ]; + SKP_int PERIndex[ MAX_FRAMES_PER_PACKET ]; + SKP_int LTPIndex[ MAX_FRAMES_PER_PACKET ][ NB_SUBFR ]; + SKP_int LTP_scaleIndex[ MAX_FRAMES_PER_PACKET ]; + SKP_int Seed[ MAX_FRAMES_PER_PACKET ]; + SKP_int vadFlagBuf[ MAX_FRAMES_PER_PACKET ]; + + /* Parameters used to investigate if inband FEC is used */ + SKP_int vadFlag; + SKP_int no_fec_counter; /* Counts number of frames wo inband FEC */ + SKP_int inband_fec_offset; /* 0: no FEC, 1: FEC with 1 packet offset, 2: FEC w 2 packets offset */ + + /* CNG state */ + SKP_Silk_CNG_struct sCNG; + + /* Stuff used for PLC */ + SKP_Silk_PLC_struct sPLC; + SKP_int lossCnt; + SKP_int prev_sigtype; /* Previous sigtype */ +#ifdef USE_INTERPOLATION_PLC + SKP_int16 prevQuant[ MAX_FRAME_LENGTH ]; + SKP_int prevPitchL[ NB_SUBFR ]; /* Previous Lags used */ + SKP_int16 prevLTPCoef_Q14[ NB_SUBFR * LTP_ORDER ]; /* Previous LTCoefs used */ + SKP_int16 prevAR_Q12[ MAX_LPC_ORDER ]; + + + + + + SKP_int interpolDistance; /* Number of frames between old and new recieved packet */ +#endif + + + + + SKP_int bitstream_v; /* Holds bitstream version */ +} SKP_Silk_decoder_state; + +/************************/ +/* Decoder control */ +/************************/ +typedef struct { + /* prediction and coding parameters */ + SKP_int pitchL[ NB_SUBFR ]; + SKP_int32 Gains_Q16[ NB_SUBFR ]; + SKP_int32 Seed; + /* holds interpolated and final coefficients, 4-byte aligned */ + SKP_array_of_int16_4_byte_aligned( PredCoef_Q12[ 2 ], MAX_LPC_ORDER ); + SKP_int16 LTPCoef_Q14[ LTP_ORDER * NB_SUBFR ]; + SKP_int LTP_scale_Q14; + + /* quantization indices */ + SKP_int PERIndex; + SKP_int RateLevelIndex; + SKP_int QuantOffsetType; + SKP_int sigtype; + SKP_int NLSFInterpCoef_Q2; +} SKP_Silk_decoder_control; + +#ifdef __cplusplus +} +#endif + +#endif + + diff --git a/libs/silk/src/SKP_Silk_structs_FIX.h b/libs/silk/src/SKP_Silk_structs_FIX.h new file mode 100644 index 0000000000..cc9bc38483 --- /dev/null +++ b/libs/silk/src/SKP_Silk_structs_FIX.h @@ -0,0 +1,221 @@ + + +/*********************************************************************** + +Copyright (c) 2006-2010, Skype Limited. All rights reserved. +Redistribution and use in source and binary forms, with or without +modification, (subject to the limitations in the disclaimer below) +are permitted provided that the following conditions are met: +- Redistributions of source code must retain the above copyright notice, +this list of conditions and the following disclaimer. + + + + + +- Redistributions in binary form must reproduce the above copyright +notice, this list of conditions and the following disclaimer in the +documentation and/or other materials provided with the distribution. +- Neither the name of Skype Limited, nor the names of specific +contributors, may be used to endorse or promote products derived from +this software without specific prior written permission. +NO EXPRESS OR IMPLIED LICENSES TO ANY PARTY'S PATENT RIGHTS ARE GRANTED +BY THIS LICENSE.THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND +CONTRIBUTORS ''AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, +BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND +FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE +COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, +INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT +NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF +USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON +ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT +(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE +OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + +***********************************************************************/ + +#ifndef SKP_SILK_STRUCTS_FIX_H +#define SKP_SILK_STRUCTS_FIX_H + +#include "SKP_Silk_typedef.h" +#include "SKP_Silk_define_FIX.h" +#include "SKP_Silk_main.h" +#include "SKP_Silk_structs.h" + +#if LOW_COMPLEXITY_ONLY +#include "SKP_Silk_resample_rom.h" +#endif + +#ifdef __cplusplus +extern "C" +{ +#endif + +/********************************/ +/* Noise shaping analysis state */ +/********************************/ +typedef struct { + SKP_int LastGainIndex; + SKP_int32 HarmBoost_smth_Q16; + SKP_int32 HarmShapeGain_smth_Q16; + SKP_int32 Tilt_smth_Q16; +} SKP_Silk_shape_state_FIX; + + + + + + +/********************************/ +/* Prefilter state */ +/********************************/ +typedef struct { + SKP_int16 sLTP_shp1[ LTP_BUF_LENGTH ]; + SKP_int32 sAR_shp2_Q14[ SHAPE_LPC_ORDER_MAX ]; + SKP_int16 sLTP_shp2_FIX[ LTP_BUF_LENGTH ]; + SKP_int sLTP_shp_buf_idx1; + SKP_int sAR_shp_buf_idx2; + SKP_int sLTP_shp_buf_idx2; + SKP_int32 sLF_AR_shp1_Q12; + SKP_int32 sLF_MA_shp1_Q12; + SKP_int32 sLF_AR_shp2_Q12; + SKP_int32 sLF_MA_shp2_Q12; + SKP_int sHarmHP; + SKP_int32 rand_seed; + SKP_int lagPrev; +} SKP_Silk_prefilter_state_FIX; + +/*****************************/ +/* Prediction analysis state */ +/*****************************/ +typedef struct { + SKP_int pitch_LPC_win_length; + SKP_int min_pitch_lag; /* Lowest possible pitch lag (samples) */ + SKP_int max_pitch_lag; /* Highest possible pitch lag (samples) */ + SKP_int prev_NLSFq_Q15[ MAX_LPC_ORDER ]; /* Prev. quant. normalized LSF vector */ +} SKP_Silk_predict_state_FIX; + +#if( defined( SAVE_ALL_INTERNAL_DATA ) || defined( USE_FLT2FIX_WRAPPER ) ) +/*******************************************/ +/* Structure containing NLSF MSVQ codebook */ +/*******************************************/ +/* structure for one stage of MSVQ */ +typedef struct { + const SKP_int32 nVectors; + const SKP_float *CB; + const SKP_float *Rates; +} SKP_Silk_NLSF_CB_Stage_struct_FLP_TMP; + +typedef struct { + const SKP_int32 nStages; + + /* fields for (de)quantizing */ + const SKP_Silk_NLSF_CB_Stage_struct_FLP_TMP *CBStages; + const SKP_float *NDeltaMin; + + /* fields for arithmetic (de)coding */ + + + + + + const SKP_uint16 *CDF; + const SKP_uint16 * const *StartPtr; + const SKP_int *MiddleIx; +} SKP_Silk_NLSF_CB_struct_FLP_TMP; +#endif + +/********************************/ +/* Encoder state FIX */ +/********************************/ +typedef struct { + SKP_Silk_encoder_state sCmn; /* Common struct, shared with floating-point code */ + +#if HIGH_PASS_INPUT + SKP_int32 variable_HP_smth1_Q15; /* State of first smoother */ + SKP_int32 variable_HP_smth2_Q15; /* State of second smoother */ +#endif + SKP_Silk_shape_state_FIX sShape; /* Shape state */ + SKP_Silk_prefilter_state_FIX sPrefilt; /* Prefilter State */ + SKP_Silk_predict_state_FIX sPred; /* Prediction state */ + SKP_Silk_nsq_state sNSQ; /* Noise Shape Quantizer State */ + SKP_Silk_nsq_state sNSQ_LBRR; /* Noise Shape Quantizer State ( for low bitrate redundancy ) */ + + /* Function pointer to noise shaping quantizer (will be set to SKP_Silk_NSQ or SKP_Silk_NSQ_del_dec) */ + void (* NoiseShapingQuantizer)( SKP_Silk_encoder_state *, SKP_Silk_encoder_control *, SKP_Silk_nsq_state *, const SKP_int16 *, + SKP_int *, const SKP_int, const SKP_int16 *, const SKP_int16 *, const SKP_int16 *, const SKP_int *, + const SKP_int *, const SKP_int32 *, const SKP_int32 *, SKP_int, const SKP_int + ); + + /* Buffer for find pitch and noise shape analysis */ + SKP_array_of_int16_4_byte_aligned( x_buf, 2 * MAX_FRAME_LENGTH + LA_SHAPE_MAX ); + SKP_int LTPCorr_Q15; /* Normalized correlation from pitch lag estimator */ + SKP_int mu_LTP_Q8; /* Rate-distortion tradeoff in LTP quantization */ + SKP_int32 SNR_dB_Q7; /* Quality setting */ + SKP_int32 avgGain_Q16; /* average gain during active speech */ + SKP_int32 avgGain_Q16_one_bit_per_sample; /* average gain during active speech */ + SKP_int BufferedInChannel_ms; /* Simulated number of ms buffer because of exceeded TargetRate_bps */ + SKP_int speech_activity_Q8; /* Speech activity in Q8 */ + SKP_int32 pitchEstimationThreshold_Q16; /* Threshold for pitch estimator */ + + /* Parameters For LTP scaling Control */ + SKP_int prevLTPredCodGain_Q7; + SKP_int HPLTPredCodGain_Q7; + + SKP_int32 inBandFEC_SNR_comp_Q8; /* Compensation to SNR_dB when using inband FEC Voiced */ + +#ifdef USE_FLT2FIX_WRAPPER + const SKP_Silk_NLSF_CB_struct_FLP_TMP *psNLSF_CB_FLP[ 2 ]; /* Pointers to voiced/unvoiced NLSF codebooks */ +#endif + + + + + +} SKP_Silk_encoder_state_FIX; + +/************************/ +/* Encoder control FIX */ +/************************/ +typedef struct { + SKP_Silk_encoder_control sCmn; /* Common struct, shared with floating-point code */ + + /* Prediction and coding parameters */ + SKP_int32 Gains_Q16[ NB_SUBFR ]; + SKP_array_of_int16_4_byte_aligned( PredCoef_Q12[ 2 ], MAX_LPC_ORDER ); + SKP_int16 LTPCoef_Q14[ LTP_ORDER * NB_SUBFR ]; + SKP_int LTP_scale_Q14; + + /* Noise shaping parameters */ + /* Testing */ + SKP_array_of_int16_4_byte_aligned( AR1_Q13, NB_SUBFR * SHAPE_LPC_ORDER_MAX ); + SKP_array_of_int16_4_byte_aligned( AR2_Q13, NB_SUBFR * SHAPE_LPC_ORDER_MAX ); + SKP_int32 LF_shp_Q14[ NB_SUBFR ]; /* Packs two int16 coefficients per int32 value */ + SKP_int GainsPre_Q14[ NB_SUBFR ]; + SKP_int HarmBoost_Q14[ NB_SUBFR ]; + SKP_int Tilt_Q14[ NB_SUBFR ]; + SKP_int HarmShapeGain_Q14[ NB_SUBFR ]; + SKP_int Lambda_Q10; + SKP_int input_quality_Q14; + SKP_int coding_quality_Q14; + SKP_int32 pitch_freq_low_Hz; + SKP_int current_SNR_dB_Q7; + + /* measures */ + SKP_int sparseness_Q8; + SKP_int LTPredCodGain_Q7; + SKP_int input_quality_bands_Q15[ VAD_N_BANDS ]; + SKP_int input_tilt_Q15; + SKP_int32 ResNrg[ NB_SUBFR ]; /* Residual energy per subframe */ + SKP_int ResNrgQ[ NB_SUBFR ]; /* Q domain for the residual energy > 0 */ + +} SKP_Silk_encoder_control_FIX; + + +#ifdef __cplusplus +} +#endif + +#endif + + diff --git a/libs/silk/src/SKP_Silk_sum_sqr_shift.c b/libs/silk/src/SKP_Silk_sum_sqr_shift.c new file mode 100644 index 0000000000..27f796d2e1 --- /dev/null +++ b/libs/silk/src/SKP_Silk_sum_sqr_shift.c @@ -0,0 +1,117 @@ + + + + + +/*********************************************************************** + +Copyright (c) 2006-2010, Skype Limited. All rights reserved. +Redistribution and use in source and binary forms, with or without +modification, (subject to the limitations in the disclaimer below) +are permitted provided that the following conditions are met: +- Redistributions of source code must retain the above copyright notice, +this list of conditions and the following disclaimer. +- Redistributions in binary form must reproduce the above copyright +notice, this list of conditions and the following disclaimer in the +documentation and/or other materials provided with the distribution. +- Neither the name of Skype Limited, nor the names of specific +contributors, may be used to endorse or promote products derived from +this software without specific prior written permission. +NO EXPRESS OR IMPLIED LICENSES TO ANY PARTY'S PATENT RIGHTS ARE GRANTED +BY THIS LICENSE.THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND +CONTRIBUTORS ''AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, +BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND +FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE +COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, +INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT +NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF +USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON +ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT +(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE +OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + +***********************************************************************/ + +/* * + * SKP_Silk_sum_sqr_shift.c * + * * + * compute number of bits to right shift the sum of squares of a vector * + * of int16s to make it fit in an int32 * + * * + * Copyright 2006-2008 (c), Skype Limited * + * */ +#include "SKP_Silk_SigProc_FIX.h" +/* Compute number of bits to right shift the sum of squares of a vector */ +/* of int16s to make it fit in an int32 */ +void SKP_Silk_sum_sqr_shift( + SKP_int32 *energy, /* O Energy of x, after shifting to the right */ + SKP_int *shift, /* O Number of bits right shift applied to energy */ + const SKP_int16 *x, /* I Input vector */ + SKP_int len /* I Length of input vector */ +) +{ + SKP_int i, shft; + + + + + + SKP_int32 in32, nrg_tmp, nrg; + + if( (SKP_int32)( (SKP_int_ptr_size)x & 2 ) != 0 ) { + /* Input is not 4-byte aligned */ + nrg = SKP_SMULBB( x[ 0 ], x[ 0 ] ); + i = 1; + } else { + nrg = 0; + i = 0; + } + shft = 0; + len--; + for( ; i < len; i += 2 ) { + /* Load two values at once */ + in32 = *( (SKP_int32 *)&x[ i ] ); + nrg = SKP_SMLABB_ovflw( nrg, in32, in32 ); + nrg = SKP_SMLATT_ovflw( nrg, in32, in32 ); + if( nrg < 0 ) { + /* Scale down */ + nrg = (SKP_int32)SKP_RSHIFT_uint( (SKP_uint32)nrg, 2 ); + shft = 2; + break; + } + } + for( ; i < len; i += 2 ) { + /* Load two values at once */ + in32 = *( (SKP_int32 *)&x[ i ] ); + nrg_tmp = SKP_SMULBB( in32, in32 ); + nrg_tmp = SKP_SMLATT_ovflw( nrg_tmp, in32, in32 ); + nrg = (SKP_int32)SKP_ADD_RSHIFT_uint( nrg, (SKP_uint32)nrg_tmp, shft ); + if( nrg < 0 ) { + /* Scale down */ + nrg = (SKP_int32)SKP_RSHIFT_uint( (SKP_uint32)nrg, 2 ); + shft += 2; + } + } + if( i == len ) { + /* One sample left to process */ + nrg_tmp = SKP_SMULBB( x[ i ], x[ i ] ); + nrg = (SKP_int32)SKP_ADD_RSHIFT_uint( nrg, nrg_tmp, shft ); + } + + /* Make sure to have at least one extra leading zero (two leading zeros in total) */ + if( nrg & 0xC0000000 ) { + nrg = SKP_RSHIFT_uint( (SKP_uint32)nrg, 2 ); + shft += 2; + } + + + + + + + /* Output arguments */ + *shift = shft; + *energy = nrg; +} + + diff --git a/libs/silk/src/SKP_Silk_tables.h b/libs/silk/src/SKP_Silk_tables.h new file mode 100644 index 0000000000..13c3f74d7b --- /dev/null +++ b/libs/silk/src/SKP_Silk_tables.h @@ -0,0 +1,205 @@ + + +/*********************************************************************** + +Copyright (c) 2006-2010, Skype Limited. All rights reserved. +Redistribution and use in source and binary forms, with or without +modification, (subject to the limitations in the disclaimer below) +are permitted provided that the following conditions are met: +- Redistributions of source code must retain the above copyright notice, +this list of conditions and the following disclaimer. +- Redistributions in binary form must reproduce the above copyright +notice, this list of conditions and the following disclaimer in the +documentation and/or other materials provided with the distribution. +- Neither the name of Skype Limited, nor the names of specific +contributors, may be used to endorse or promote products derived from +this software without specific prior written permission. +NO EXPRESS OR IMPLIED LICENSES TO ANY PARTY'S PATENT RIGHTS ARE GRANTED +BY THIS LICENSE.THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND +CONTRIBUTORS ''AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, +BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND +FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE +COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, +INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT +NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF +USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON +ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT +(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE +OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + +***********************************************************************/ + +#ifndef SKP_SILK_TABLES_H +#define SKP_SILK_TABLES_H + +#include "SKP_Silk_define.h" + +#define PITCH_EST_MAX_LAG_MS 18 /* 18 ms -> 56 Hz */ +#define PITCH_EST_MIN_LAG_MS 2 /* 2 ms -> 500 Hz */ + +#ifdef __cplusplus +extern "C" + + + + + +{ +#endif + +/* entropy coding tables */ +extern const SKP_uint16 SKP_Silk_type_offset_CDF[ 5 ]; /* 5 */ +extern const SKP_uint16 SKP_Silk_type_offset_joint_CDF[ 4 ][ 5 ]; /* 20 */ +extern const SKP_int SKP_Silk_type_offset_CDF_offset; + +extern const SKP_uint16 SKP_Silk_gain_CDF[ 2 ][ N_LEVELS_QGAIN + 1 ]; /* 130 */ +extern const SKP_int SKP_Silk_gain_CDF_offset; +extern const SKP_uint16 SKP_Silk_delta_gain_CDF[ MAX_DELTA_GAIN_QUANT - MIN_DELTA_GAIN_QUANT + 2 ]; /* 46 */ +extern const SKP_int SKP_Silk_delta_gain_CDF_offset; + +extern const SKP_uint16 SKP_Silk_pitch_lag_NB_CDF[ 8 * ( PITCH_EST_MAX_LAG_MS - PITCH_EST_MIN_LAG_MS ) + 2 ]; /* 130 */ +extern const SKP_int SKP_Silk_pitch_lag_NB_CDF_offset; +extern const SKP_uint16 SKP_Silk_pitch_lag_MB_CDF[ 12 * ( PITCH_EST_MAX_LAG_MS - PITCH_EST_MIN_LAG_MS ) + 2 ]; /* 194 */ +extern const SKP_int SKP_Silk_pitch_lag_MB_CDF_offset; +extern const SKP_uint16 SKP_Silk_pitch_lag_WB_CDF[ 16 * ( PITCH_EST_MAX_LAG_MS - PITCH_EST_MIN_LAG_MS ) + 2 ]; /* 258 */ +extern const SKP_int SKP_Silk_pitch_lag_WB_CDF_offset; +extern const SKP_uint16 SKP_Silk_pitch_lag_SWB_CDF[ 24 * ( PITCH_EST_MAX_LAG_MS - PITCH_EST_MIN_LAG_MS ) + 2 ]; /* 386 */ +extern const SKP_int SKP_Silk_pitch_lag_SWB_CDF_offset; + +extern const SKP_uint16 SKP_Silk_pitch_contour_CDF[ 35 ]; /* 35 */ +extern const SKP_int SKP_Silk_pitch_contour_CDF_offset; +extern const SKP_uint16 SKP_Silk_pitch_contour_NB_CDF[ 12 ]; /* 12 */ +extern const SKP_int SKP_Silk_pitch_contour_NB_CDF_offset; +extern const SKP_uint16 SKP_Silk_pitch_delta_CDF[23]; /* 23 */ +extern const SKP_int SKP_Silk_pitch_delta_CDF_offset; + +extern const SKP_uint16 SKP_Silk_pulses_per_block_CDF[ N_RATE_LEVELS ][ MAX_PULSES + 3 ]; /* 210 */ +extern const SKP_int SKP_Silk_pulses_per_block_CDF_offset; +extern const SKP_int16 SKP_Silk_pulses_per_block_BITS_Q6[ N_RATE_LEVELS - 1 ][ MAX_PULSES + 2 ]; /* 180 */ + +extern const SKP_uint16 SKP_Silk_rate_levels_CDF[ 2 ][ N_RATE_LEVELS ]; /* 20 */ +extern const SKP_int SKP_Silk_rate_levels_CDF_offset; +extern const SKP_int16 SKP_Silk_rate_levels_BITS_Q6[ 2 ][ N_RATE_LEVELS - 1 ]; /* 18 */ + +extern const SKP_int SKP_Silk_max_pulses_table[ 4 ]; /* 4 */ + +extern const SKP_uint16 SKP_Silk_shell_code_table0[ 33 ]; /* 33 */ +extern const SKP_uint16 SKP_Silk_shell_code_table1[ 52 ]; /* 52 */ +extern const SKP_uint16 SKP_Silk_shell_code_table2[ 102 ]; /* 102 */ +extern const SKP_uint16 SKP_Silk_shell_code_table3[ 207 ]; /* 207 */ +extern const SKP_uint16 SKP_Silk_shell_code_table_offsets[ 19 ]; /* 19 */ + +extern const SKP_uint16 SKP_Silk_lsb_CDF[ 3 ]; /* 3 */ + +extern const SKP_uint16 SKP_Silk_sign_CDF[ 36 ][ 3 ]; /* 108 */ + + + + + +extern const SKP_uint16 SKP_Silk_LTP_per_index_CDF[ 4 ]; /* 4 */ +extern const SKP_int SKP_Silk_LTP_per_index_CDF_offset; +extern const SKP_int16 * const SKP_Silk_LTP_gain_BITS_Q6_ptrs[ NB_LTP_CBKS ]; /* 3 */ +extern const SKP_uint16 * const SKP_Silk_LTP_gain_CDF_ptrs[ NB_LTP_CBKS ]; /* 3 */ +extern const SKP_int SKP_Silk_LTP_gain_CDF_offsets[ NB_LTP_CBKS ]; /* 3 */ +extern const SKP_int32 SKP_Silk_LTP_gain_middle_avg_RD_Q14; +extern const SKP_uint16 SKP_Silk_LTPscale_CDF[ 4 ]; /* 4 */ +extern const SKP_int SKP_Silk_LTPscale_offset; + +/* Tables for LTPScale */ +extern const SKP_int16 SKP_Silk_LTPScales_table_Q14[ 3 ]; + +extern const SKP_uint16 SKP_Silk_vadflag_CDF[ 3 ]; /* 3 */ +extern const SKP_int SKP_Silk_vadflag_offset; + +extern const SKP_int SKP_Silk_SamplingRates_table[ 4 ]; /* 4 */ +extern const SKP_uint16 SKP_Silk_SamplingRates_CDF[ 5 ]; /* 5 */ +extern const SKP_int SKP_Silk_SamplingRates_offset; + +extern const SKP_uint16 SKP_Silk_NLSF_interpolation_factor_CDF[ 6 ]; +extern const SKP_int SKP_Silk_NLSF_interpolation_factor_offset; + +/* quantization tables */ +extern const SKP_int16 * const SKP_Silk_LTP_vq_ptrs_Q14[ NB_LTP_CBKS ]; /* 168 */ +extern const SKP_int SKP_Silk_LTP_vq_sizes[ NB_LTP_CBKS ]; /* 3 */ + +/* Piece-wise linear mapping from bitrate in kbps to coding quality in dB SNR */ +extern const SKP_int32 TargetRate_table_NB[ TARGET_RATE_TAB_SZ ]; +extern const SKP_int32 TargetRate_table_MB[ TARGET_RATE_TAB_SZ ]; +extern const SKP_int32 TargetRate_table_WB[ TARGET_RATE_TAB_SZ ]; +extern const SKP_int32 TargetRate_table_SWB[ TARGET_RATE_TAB_SZ ]; +extern const SKP_int32 SNR_table_Q1[ TARGET_RATE_TAB_SZ ]; + +extern const SKP_int32 SNR_table_one_bit_per_sample_Q7[ 4 ]; + +/* Filter coeficicnts for HP filter: 4. Order filter implementad as two biquad filters */ +extern const SKP_int16 SKP_Silk_SWB_detect_B_HP_Q13[ NB_SOS ][ 3 ]; +extern const SKP_int16 SKP_Silk_SWB_detect_A_HP_Q13[ NB_SOS ][ 2 ]; + +/* Decoder high-pass filter coefficients for 24 kHz sampling */ +extern const SKP_int16 SKP_Silk_Dec_A_HP_24[ DEC_HP_ORDER ]; /* 2 */ +extern const SKP_int16 SKP_Silk_Dec_B_HP_24[ DEC_HP_ORDER + 1 ]; /* 3 */ + +/* Decoder high-pass filter coefficients for 16 kHz sampling */ +extern const SKP_int16 SKP_Silk_Dec_A_HP_16[ DEC_HP_ORDER ]; /* 2 */ +extern const SKP_int16 SKP_Silk_Dec_B_HP_16[ DEC_HP_ORDER + 1 ]; /* 3 */ + +/* Decoder high-pass filter coefficients for 12 kHz sampling */ + + + + + +extern const SKP_int16 SKP_Silk_Dec_A_HP_12[ DEC_HP_ORDER ]; /* 2 */ +extern const SKP_int16 SKP_Silk_Dec_B_HP_12[ DEC_HP_ORDER + 1 ]; /* 3 */ + +/* Decoder high-pass filter coefficients for 8 kHz sampling */ +extern const SKP_int16 SKP_Silk_Dec_A_HP_8[ DEC_HP_ORDER ]; /* 2 */ +extern const SKP_int16 SKP_Silk_Dec_B_HP_8[ DEC_HP_ORDER + 1 ]; /* 3 */ + +/* Table for frame termination indication */ +extern const SKP_uint16 SKP_Silk_FrameTermination_CDF[ 5 ]; +extern const SKP_int SKP_Silk_FrameTermination_offset; + +extern const SKP_uint16 SKP_Silk_FrameTermination_v4_CDF[ 6 ]; +extern const SKP_int SKP_Silk_FrameTermination_v4_offset; + +/* Table for random seed */ +extern const SKP_uint16 SKP_Silk_Seed_CDF[ 5 ]; +extern const SKP_int SKP_Silk_Seed_offset; + +/* Quantization offsets */ +extern const SKP_int16 SKP_Silk_Quantization_Offsets_Q10[ 2 ][ 2 ]; + +#if SWITCH_TRANSITION_FILTERING +/* Interpolation points for filter coefficients used in the bandwidth transition smoother */ +extern const SKP_int32 SKP_Silk_Transition_LP_B_Q28[ TRANSITION_INT_NUM ][ TRANSITION_NB ]; +extern const SKP_int32 SKP_Silk_Transition_LP_A_Q28[ TRANSITION_INT_NUM ][ TRANSITION_NA ]; +#endif + +#ifdef __cplusplus +} +#endif + +#endif + + + + + + + + + + + + + + + + + + + + + diff --git a/libs/silk/src/SKP_Silk_tables_FIX.h b/libs/silk/src/SKP_Silk_tables_FIX.h new file mode 100644 index 0000000000..7a6f46b3bc --- /dev/null +++ b/libs/silk/src/SKP_Silk_tables_FIX.h @@ -0,0 +1,43 @@ + + +/*********************************************************************** + +Copyright (c) 2006-2010, Skype Limited. All rights reserved. +Redistribution and use in source and binary forms, with or without +modification, (subject to the limitations in the disclaimer below) +are permitted provided that the following conditions are met: +- Redistributions of source code must retain the above copyright notice, +this list of conditions and the following disclaimer. +- Redistributions in binary form must reproduce the above copyright +notice, this list of conditions and the following disclaimer in the +documentation and/or other materials provided with the distribution. +- Neither the name of Skype Limited, nor the names of specific +contributors, may be used to endorse or promote products derived from +this software without specific prior written permission. +NO EXPRESS OR IMPLIED LICENSES TO ANY PARTY'S PATENT RIGHTS ARE GRANTED +BY THIS LICENSE.THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND +CONTRIBUTORS ''AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, +BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND +FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE +COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, +INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT +NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF +USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON +ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT +(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE +OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + +***********************************************************************/ + +#ifndef SKP_SILK_TABLES_FIX_H +#define SKP_SILK_TABLES_FIX_H + +#include "SKP_Silk_main_FIX.h" + +/* NLSF codebooks */ +extern const SKP_Silk_NLSF_CB_struct SKP_Silk_NLSF_CB0_16, SKP_Silk_NLSF_CB1_16; +extern const SKP_Silk_NLSF_CB_struct SKP_Silk_NLSF_CB0_10, SKP_Silk_NLSF_CB1_10; + +#endif //SKP_SILK_TABLES_FIX_H + + diff --git a/libs/silk/src/SKP_Silk_tables_NLSF_CB0_10.c b/libs/silk/src/SKP_Silk_tables_NLSF_CB0_10.c new file mode 100644 index 0000000000..f7acc5b6be --- /dev/null +++ b/libs/silk/src/SKP_Silk_tables_NLSF_CB0_10.c @@ -0,0 +1,990 @@ + + +/*********************************************************************** + +Copyright (c) 2006-2010, Skype Limited. All rights reserved. +Redistribution and use in source and binary forms, with or without +modification, (subject to the limitations in the disclaimer below) +are permitted provided that the following conditions are met: +- Redistributions of source code must retain the above copyright notice, +this list of conditions and the following disclaimer. +- Redistributions in binary form must reproduce the above copyright +notice, this list of conditions and the following disclaimer in the +documentation and/or other materials provided with the distribution. +- Neither the name of Skype Limited, nor the names of specific +contributors, may be used to endorse or promote products derived from +this software without specific prior written permission. +NO EXPRESS OR IMPLIED LICENSES TO ANY PARTY'S PATENT RIGHTS ARE GRANTED +BY THIS LICENSE.THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND +CONTRIBUTORS ''AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, +BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND +FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE + + + + + +COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, +INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT +NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF +USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON +ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT +(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE +OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + +***********************************************************************/ + +/**********************************************/ +/* This file has been automatically generated */ +/* */ +/* ROM usage: 138+1331 Words */ +/**********************************************/ + +#include "SKP_Silk_structs.h" +#include "SKP_Silk_tables_NLSF_CB0_10.h" + +const SKP_uint16 SKP_Silk_NLSF_MSVQ_CB0_10_CDF[ NLSF_MSVQ_CB0_10_VECTORS + NLSF_MSVQ_CB0_10_STAGES ] = +{ + 0, + 2658, + 4420, + 6107, + 7757, + 9408, + 10955, + 12502, + 13983, + 15432, + 16882, + 18331, + 19750, + 21108, + 22409, + 23709, + 25010, + 26256, + 27501, + 28747, + 29965, + 31158, + 32351, + 33544, + 34736, + 35904, + 36997, + + + + + + 38091, + 39185, + 40232, + 41280, + 42327, + 43308, + 44290, + 45271, + 46232, + 47192, + 48132, + 49032, + 49913, + 50775, + 51618, + 52462, + 53287, + 54095, + 54885, + 55675, + 56449, + 57222, + 57979, + 58688, + 59382, + 60076, + 60726, + 61363, + 61946, + 62505, + 63052, + 63543, + 63983, + 64396, + 64766, + 65023, + 65279, + 65535, + 0, + 4977, + 9542, + 14106, + 18671, + 23041, + 27319, + 31596, + 35873, + 39969, + + + + + + 43891, + 47813, + 51652, + 55490, + 59009, + 62307, + 65535, + 0, + 8571, + 17142, + 25529, + 33917, + 42124, + 49984, + 57844, + 65535, + 0, + 8732, + 17463, + 25825, + 34007, + 42189, + 50196, + 58032, + 65535, + 0, + 8948, + 17704, + 25733, + 33762, + 41791, + 49821, + 57678, + 65535, + 0, + 4374, + 8655, + 12936, + 17125, + 21313, + 25413, + 29512, + 33611, + 37710, + 41809, + 45820, + 49832, + 53843, + + + + + + 57768, + 61694, + 65535 +}; + +const SKP_uint16 * const SKP_Silk_NLSF_MSVQ_CB0_10_CDF_start_ptr[ NLSF_MSVQ_CB0_10_STAGES ] = +{ + &SKP_Silk_NLSF_MSVQ_CB0_10_CDF[ 0 ], + &SKP_Silk_NLSF_MSVQ_CB0_10_CDF[ 65 ], + &SKP_Silk_NLSF_MSVQ_CB0_10_CDF[ 82 ], + &SKP_Silk_NLSF_MSVQ_CB0_10_CDF[ 91 ], + &SKP_Silk_NLSF_MSVQ_CB0_10_CDF[ 100 ], + &SKP_Silk_NLSF_MSVQ_CB0_10_CDF[ 109 ] +}; + +const SKP_int SKP_Silk_NLSF_MSVQ_CB0_10_CDF_middle_idx[ NLSF_MSVQ_CB0_10_STAGES ] = +{ + 23, + 8, + 5, + 5, + 5, + 9 +}; + +const SKP_int16 SKP_Silk_NLSF_MSVQ_CB0_10_rates_Q5[ NLSF_MSVQ_CB0_10_VECTORS ] = +{ + 148, 167, + 169, 170, + 170, 173, + 173, 175, + 176, 176, + 176, 177, + 179, 181, + 181, 181, + 183, 183, + 183, 184, + 185, 185, + 185, 185, + 186, 189, + 189, 189, + 191, 191, + 191, 194, + 194, 194, + 195, 195, + 196, 198, + 199, 200, + 201, 201, + + + + + + 202, 203, + 204, 204, + 205, 205, + 206, 209, + 210, 210, + 213, 214, + 218, 220, + 221, 226, + 231, 234, + 239, 256, + 256, 256, + 119, 123, + 123, 123, + 125, 126, + 126, 126, + 128, 130, + 130, 131, + 131, 135, + 138, 139, + 94, 94, + 95, 95, + 96, 98, + 98, 99, + 93, 93, + 95, 96, + 96, 97, + 98, 100, + 92, 93, + 97, 97, + 97, 97, + 98, 98, + 125, 126, + 126, 127, + 127, 128, + 128, 128, + 128, 128, + 129, 129, + 129, 130, + 130, 131 +}; + +const SKP_int SKP_Silk_NLSF_MSVQ_CB0_10_ndelta_min_Q15[ 10 + 1 ] = +{ + 563, + 3, + 22, + 20, + 3, + + + + + + 3, + 132, + 119, + 358, + 86, + 964 +}; + +const SKP_int16 SKP_Silk_NLSF_MSVQ_CB0_10_Q15[ 10 * NLSF_MSVQ_CB0_10_VECTORS ] = +{ + 2210, 4023, + 6981, 9260, + 12573, 15687, + 19207, 22383, + 25981, 29142, + 3285, 4172, + 6116, 10856, + 15289, 16826, + 19701, 22010, + 24721, 29313, + 1554, 2511, + 6577, 10337, + 13837, 16511, + 20086, 23214, + 26480, 29464, + 3062, 4017, + 5771, 10037, + 13365, 14952, + 20140, 22891, + 25229, 29603, + 2085, 3457, + 5934, 8718, + 11501, 13670, + 17997, 21817, + 24935, 28745, + 2776, 4093, + 6421, 10413, + 15111, 16806, + 20825, 23826, + 26308, 29411, + 2717, 4034, + 5697, 8463, + 14301, 16354, + 19007, 23413, + 25812, 28506, + 2872, 3702, + 5881, 11034, + 17141, 18879, + + + + + + 21146, 23451, + 25817, 29600, + 2999, 4015, + 7357, 11219, + 12866, 17307, + 20081, 22644, + 26774, 29107, + 2942, 3866, + 5918, 11915, + 13909, 16072, + 20453, 22279, + 27310, 29826, + 2271, 3527, + 6606, 9729, + 12943, 17382, + 20224, 22345, + 24602, 28290, + 2207, 3310, + 5844, 9339, + 11141, 15651, + 18576, 21177, + 25551, 28228, + 3963, 4975, + 6901, 11588, + 13466, 15577, + 19231, 21368, + 25510, 27759, + 2749, 3549, + 6966, 13808, + 15653, 17645, + 20090, 22599, + 26467, 28537, + 2126, 3504, + 5109, 9954, + 12550, 14620, + 19703, 21687, + 26457, 29106, + 3966, 5745, + 7442, 9757, + 14468, 16404, + 19135, 23048, + 25375, 28391, + 3197, 4751, + 6451, 9298, + 13038, 14874, + 17962, 20627, + 23835, 28464, + 3195, 4081, + + + + + + 6499, 12252, + 14289, 16040, + 18357, 20730, + 26980, 29309, + 1533, 2471, + 4486, 7796, + 12332, 15758, + 19567, 22298, + 25673, 29051, + 2002, 2971, + 4985, 8083, + 13181, 15435, + 18237, 21517, + 24595, 28351, + 3808, 4925, + 6710, 10201, + 12011, 14300, + 18457, 20391, + 26525, 28956, + 2281, 3418, + 4979, 8726, + 15964, 18104, + 20250, 22771, + 25286, 28954, + 3051, 5479, + 7290, 9848, + 12744, 14503, + 18665, 23684, + 26065, 28947, + 2364, 3565, + 5502, 9621, + 14922, 16621, + 19005, 20996, + 26310, 29302, + 4093, 5212, + 6833, 9880, + 16303, 18286, + 20571, 23614, + 26067, 29128, + 2941, 3996, + 6038, 10638, + 12668, 14451, + 16798, 19392, + 26051, 28517, + 3863, 5212, + 7019, 9468, + 11039, 13214, + 19942, 22344, + + + + + + 25126, 29539, + 4615, 6172, + 7853, 10252, + 12611, 14445, + 19719, 22441, + 24922, 29341, + 3566, 4512, + 6985, 8684, + 10544, 16097, + 18058, 22475, + 26066, 28167, + 4481, 5489, + 7432, 11414, + 13191, 15225, + 20161, 22258, + 26484, 29716, + 3320, 4320, + 6621, 9867, + 11581, 14034, + 21168, 23210, + 26588, 29903, + 3794, 4689, + 6916, 8655, + 10143, 16144, + 19568, 21588, + 27557, 29593, + 2446, 3276, + 5918, 12643, + 16601, 18013, + 21126, 23175, + 27300, 29634, + 2450, 3522, + 5437, 8560, + 15285, 19911, + 21826, 24097, + 26567, 29078, + 2580, 3796, + 5580, 8338, + 9969, 12675, + 18907, 22753, + 25450, 29292, + 3325, 4312, + 6241, 7709, + 9164, 14452, + 21665, 23797, + 27096, 29857, + 3338, 4163, + 7738, 11114, + + + + + + 12668, 14753, + 16931, 22736, + 25671, 28093, + 3840, 4755, + 7755, 13471, + 15338, 17180, + 20077, 22353, + 27181, 29743, + 2504, 4079, + 8351, 12118, + 15046, 18595, + 21684, 24704, + 27519, 29937, + 5234, 6342, + 8267, 11821, + 15155, 16760, + 20667, 23488, + 25949, 29307, + 2681, 3562, + 6028, 10827, + 18458, 20458, + 22303, 24701, + 26912, 29956, + 3374, 4528, + 6230, 8256, + 9513, 12730, + 18666, 20720, + 26007, 28425, + 2731, 3629, + 8320, 12450, + 14112, 16431, + 18548, 22098, + 25329, 27718, + 3481, 4401, + 7321, 9319, + 11062, 13093, + 15121, 22315, + 26331, 28740, + 3577, 4945, + 6669, 8792, + 10299, 12645, + 19505, 24766, + 26996, 29634, + 4058, 5060, + 7288, 10190, + 11724, 13936, + 15849, 18539, + 26701, 29845, + + + + + + 4262, 5390, + 7057, 8982, + 10187, 15264, + 20480, 22340, + 25958, 28072, + 3404, 4329, + 6629, 7946, + 10121, 17165, + 19640, 22244, + 25062, 27472, + 3157, 4168, + 6195, 9319, + 10771, 13325, + 15416, 19816, + 24672, 27634, + 2503, 3473, + 5130, 6767, + 8571, 14902, + 19033, 21926, + 26065, 28728, + 4133, 5102, + 7553, 10054, + 11757, 14924, + 17435, 20186, + 23987, 26272, + 4972, 6139, + 7894, 9633, + 11320, 14295, + 21737, 24306, + 26919, 29907, + 2958, 3816, + 6851, 9204, + 10895, 18052, + 20791, 23338, + 27556, 29609, + 5234, 6028, + 8034, 10154, + 11242, 14789, + 18948, 20966, + 26585, 29127, + 5241, 6838, + 10526, 12819, + 14681, 17328, + 19928, 22336, + 26193, 28697, + 3412, 4251, + 5988, 7094, + 9907, 18243, + + + + + + 21669, 23777, + 26969, 29087, + 2470, 3217, + 7797, 15296, + 17365, 19135, + 21979, 24256, + 27322, 29442, + 4939, 5804, + 8145, 11809, + 13873, 15598, + 17234, 19423, + 26476, 29645, + 5051, 6167, + 8223, 9655, + 12159, 17995, + 20464, 22832, + 26616, 28462, + 4987, 5907, + 9319, 11245, + 13132, 15024, + 17485, 22687, + 26011, 28273, + 5137, 6884, + 11025, 14950, + 17191, 19425, + 21807, 24393, + 26938, 29288, + 7057, 7884, + 9528, 10483, + 10960, 14811, + 19070, 21675, + 25645, 28019, + 6759, 7160, + 8546, 11779, + 12295, 13023, + 16627, 21099, + 24697, 28287, + 3863, 9762, + 11068, 11445, + 12049, 13960, + 18085, 21507, + 25224, 28997, + 397, 335, + 651, 1168, + 640, 765, + 465, 331, + 214, -194, + -578, -647, + + + + + + -657, 750, + 564, 613, + 549, 630, + 304, -52, + 828, 922, + 443, 111, + 138, 124, + 169, 14, + 144, 83, + 132, 58, + -413, -752, + 869, 336, + 385, 69, + 56, 830, + -227, -266, + -368, -440, + -1195, 163, + 126, -228, + 802, 156, + 188, 120, + 376, 59, + -358, -558, + -1326, -254, + -202, -789, + 296, 92, + -70, -129, + -718, -1135, + 292, -29, + -631, 487, + -157, -153, + -279, 2, + -419, -342, + -34, -514, + -799, -1571, + -687, -609, + -546, -130, + -215, -252, + -446, -574, + -1337, 207, + -72, 32, + 103, -642, + 942, 733, + 187, 29, + -211, -814, + 143, 225, + 20, 24, + -268, -377, + 1623, 1133, + + + + + + 667, 164, + 307, 366, + 187, 34, + 62, -313, + -832, -1482, + -1181, 483, + -42, -39, + -450, -1406, + -587, -52, + -760, 334, + 98, -60, + -500, -488, + -1058, 299, + 131, -250, + -251, -703, + 1037, 568, + -413, -265, + 1687, 573, + 345, 323, + 98, 61, + -102, 31, + 135, 149, + 617, 365, + -39, 34, + -611, 1201, + 1421, 736, + -414, -393, + -492, -343, + -316, -532, + 528, 172, + 90, 322, + -294, -319, + -541, 503, + 639, 401, + 1, -149, + -73, -167, + 150, 118, + 308, 218, + 121, 195, + -143, -261, + -1013, -802, + 387, 436, + 130, -427, + -448, -681, + 123, -87, + -251, -113, + 274, 310, + 445, 501, + + + + + + 354, 272, + 141, -285, + 569, 656, + 37, -49, + 251, -386, + -263, 1122, + 604, 606, + 336, 95, + 34, 0, + 85, 180, + 207, -367, + -622, 1070, + -6, -79, + -160, -92, + -137, -276, + -323, -371, + -696, -1036, + 407, 102, + -86, -214, + -482, -647, + -28, -291, + -97, -180, + -250, -435, + -18, -76, + -332, 410, + 407, 168, + 539, 411, + 254, 111, + 58, -145, + 200, 30, + 187, 116, + 131, -367, + -475, 781, + -559, 561, + 195, -115, + 8, -168, + 30, 55, + -122, 131, + 82, -5, + -273, -50, + -632, 668, + 4, 32, + -26, -279, + 315, 165, + 197, 377, + 155, -41, + -138, -324, + -109, -617, + + + + + + 360, 98, + -53, -319, + -114, -245, + -82, 507, + 468, 263, + -137, -389, + 652, 354, + -18, -227, + -462, -135, + 317, 53, + -16, 66, + -72, -126, + -356, -347, + -328, -72, + -337, 324, + 152, 349, + 169, -196, + 179, 254, + 260, 325, + -74, -80, + 75, -31, + 270, 275, + 87, 278, + -446, -301, + 309, 71, + -25, -242, + 516, 161, + -162, -83, + 329, 230, + -311, -259, + 177, -26, + -462, 89, + 257, 6, + -130, -93, + -456, -317, + -221, -206, + -417, -182, + -74, 234, + 48, 261, + 359, 231, + 258, 85, + -282, 252, + -147, -222, + 251, -207, + 443, 123, + -417, -36, + 273, -241, + 240, -112, + + + + + + 44, -167, + 126, -124, + -77, 58, + -401, 333, + -118, 82, + 126, 151, + -433, 359, + -130, -102, + 131, -244, + 86, 85, + -462, 414, + -240, 16, + 145, 28, + -205, -481, + 373, 293, + -72, -174, + 62, 259, + -8, -18, + 362, 233, + 185, 43, + 278, 27, + 193, 570, + -248, 189, + 92, 31, + -275, -3, + 243, 176, + 438, 209, + 206, -51, + 79, 109, + 168, -185, + -308, -68, + -618, 385, + -310, -108, + -164, 165, + 61, -152, + -101, -412, + -268, -257, + -40, -20, + -28, -158, + -301, 271, + 380, -338, + -367, -132, + 64, 114, + -131, -225, + -156, -260, + -63, -116, + 155, -586, + -202, 254, + + + + + + -287, 178, + 227, -106, + -294, 164, + 298, -100, + 185, 317, + 193, -45, + 28, 80, + -87, -433, + 22, -48, + 48, -237, + -229, -139, + 120, -364, + 268, -136, + 396, 125, + 130, -89, + -272, 118, + -256, -68, + -451, 488, + 143, -165, + -48, -190, + 106, 219, + 47, 435, + 245, 97, + 75, -418, + 121, -187, + 570, -200, + -351, 225, + -21, -217, + 234, -111, + 194, 14, + 242, 118, + 140, -397, + 355, 361, + -45, -195 +}; + +const SKP_Silk_NLSF_CB_Stage_struct SKP_Silk_NLSF_CB0_10_Stage_info[ NLSF_MSVQ_CB0_10_STAGES ] = +{ + { 64, &SKP_Silk_NLSF_MSVQ_CB0_10_Q15[ 10 * 0 ], &SKP_Silk_NLSF_MSVQ_CB0_10_rates_Q5[ 0 ] }, + { 16, &SKP_Silk_NLSF_MSVQ_CB0_10_Q15[ 10 * 64 ], &SKP_Silk_NLSF_MSVQ_CB0_10_rates_Q5[ 64 ] }, + { 8, &SKP_Silk_NLSF_MSVQ_CB0_10_Q15[ 10 * 80 ], &SKP_Silk_NLSF_MSVQ_CB0_10_rates_Q5[ 80 ] }, + { 8, &SKP_Silk_NLSF_MSVQ_CB0_10_Q15[ 10 * 88 ], &SKP_Silk_NLSF_MSVQ_CB0_10_rates_Q5[ 88 ] }, + { 8, &SKP_Silk_NLSF_MSVQ_CB0_10_Q15[ 10 * 96 ], &SKP_Silk_NLSF_MSVQ_CB0_10_rates_Q5[ 96 ] }, + { 16, &SKP_Silk_NLSF_MSVQ_CB0_10_Q15[ 10 * 104 ], &SKP_Silk_NLSF_MSVQ_CB0_10_rates_Q5[ 104 ] } +}; + +const SKP_Silk_NLSF_CB_struct SKP_Silk_NLSF_CB0_10 = +{ + + + + + + NLSF_MSVQ_CB0_10_STAGES, + SKP_Silk_NLSF_CB0_10_Stage_info, + SKP_Silk_NLSF_MSVQ_CB0_10_ndelta_min_Q15, + SKP_Silk_NLSF_MSVQ_CB0_10_CDF, + SKP_Silk_NLSF_MSVQ_CB0_10_CDF_start_ptr, + SKP_Silk_NLSF_MSVQ_CB0_10_CDF_middle_idx +}; + + + diff --git a/libs/silk/src/SKP_Silk_tables_NLSF_CB0_10.h b/libs/silk/src/SKP_Silk_tables_NLSF_CB0_10.h new file mode 100644 index 0000000000..669c091fe0 --- /dev/null +++ b/libs/silk/src/SKP_Silk_tables_NLSF_CB0_10.h @@ -0,0 +1,62 @@ + + +/*********************************************************************** + +Copyright (c) 2006-2010, Skype Limited. All rights reserved. +Redistribution and use in source and binary forms, with or without +modification, (subject to the limitations in the disclaimer below) +are permitted provided that the following conditions are met: +- Redistributions of source code must retain the above copyright notice, +this list of conditions and the following disclaimer. +- Redistributions in binary form must reproduce the above copyright +notice, this list of conditions and the following disclaimer in the +documentation and/or other materials provided with the distribution. +- Neither the name of Skype Limited, nor the names of specific +contributors, may be used to endorse or promote products derived from +this software without specific prior written permission. +NO EXPRESS OR IMPLIED LICENSES TO ANY PARTY'S PATENT RIGHTS ARE GRANTED +BY THIS LICENSE.THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND +CONTRIBUTORS ''AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, +BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND +FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE +COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, +INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT +NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF +USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON +ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT +(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE +OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + +***********************************************************************/ + +#ifndef SKP_SILK_TABLES_NLSF_CB0_10_H +#define SKP_SILK_TABLES_NLSF_CB0_10_H + +#include "SKP_Silk_define.h" + +#ifdef __cplusplus + + + + + +extern "C" +{ +#endif + +#define NLSF_MSVQ_CB0_10_STAGES 6 +#define NLSF_MSVQ_CB0_10_VECTORS 120 + +/* NLSF codebook entropy coding tables */ +extern const SKP_uint16 SKP_Silk_NLSF_MSVQ_CB0_10_CDF[ NLSF_MSVQ_CB0_10_VECTORS + NLSF_MSVQ_CB0_10_STAGES ]; +extern const SKP_uint16 * const SKP_Silk_NLSF_MSVQ_CB0_10_CDF_start_ptr[ NLSF_MSVQ_CB0_10_STAGES ]; +extern const SKP_int SKP_Silk_NLSF_MSVQ_CB0_10_CDF_middle_idx[ NLSF_MSVQ_CB0_10_STAGES ]; + +#ifdef __cplusplus +} +#endif + +#endif + + + diff --git a/libs/silk/src/SKP_Silk_tables_NLSF_CB0_16.c b/libs/silk/src/SKP_Silk_tables_NLSF_CB0_16.c new file mode 100644 index 0000000000..f18109260a --- /dev/null +++ b/libs/silk/src/SKP_Silk_tables_NLSF_CB0_16.c @@ -0,0 +1,1463 @@ + + +/*********************************************************************** + +Copyright (c) 2006-2010, Skype Limited. All rights reserved. +Redistribution and use in source and binary forms, with or without +modification, (subject to the limitations in the disclaimer below) +are permitted provided that the following conditions are met: +- Redistributions of source code must retain the above copyright notice, +this list of conditions and the following disclaimer. +- Redistributions in binary form must reproduce the above copyright +notice, this list of conditions and the following disclaimer in the +documentation and/or other materials provided with the distribution. +- Neither the name of Skype Limited, nor the names of specific +contributors, may be used to endorse or promote products derived from +this software without specific prior written permission. +NO EXPRESS OR IMPLIED LICENSES TO ANY PARTY'S PATENT RIGHTS ARE GRANTED +BY THIS LICENSE.THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND +CONTRIBUTORS ''AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, +BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND +FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE +COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, +INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT +NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF +USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON +ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT +(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE + + + + + +OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + +***********************************************************************/ + +/**********************************************/ +/* This file has been automatically generated */ +/* */ +/* ROM usage: 246+3689 Words */ +/**********************************************/ + +#include "SKP_Silk_structs.h" +#include "SKP_Silk_tables_NLSF_CB0_16.h" + +const SKP_uint16 SKP_Silk_NLSF_MSVQ_CB0_16_CDF[ NLSF_MSVQ_CB0_16_VECTORS + NLSF_MSVQ_CB0_16_STAGES ] = +{ + 0, + 1449, + 2749, + 4022, + 5267, + 6434, + 7600, + 8647, + 9695, + 10742, + 11681, + 12601, + 13444, + 14251, + 15008, + 15764, + 16521, + 17261, + 18002, + 18710, + 19419, + 20128, + 20837, + 21531, + 22225, + 22919, + 23598, + 24277, + 24956, + 25620, + 26256, + 26865, + 27475, + + + + + + 28071, + 28667, + 29263, + 29859, + 30443, + 31026, + 31597, + 32168, + 32727, + 33273, + 33808, + 34332, + 34855, + 35379, + 35902, + 36415, + 36927, + 37439, + 37941, + 38442, + 38932, + 39423, + 39914, + 40404, + 40884, + 41364, + 41844, + 42324, + 42805, + 43285, + 43754, + 44224, + 44694, + 45164, + 45623, + 46083, + 46543, + 46993, + 47443, + 47892, + 48333, + 48773, + 49213, + 49653, + 50084, + 50515, + 50946, + 51377, + + + + + + 51798, + 52211, + 52614, + 53018, + 53422, + 53817, + 54212, + 54607, + 55002, + 55388, + 55775, + 56162, + 56548, + 56910, + 57273, + 57635, + 57997, + 58352, + 58698, + 59038, + 59370, + 59702, + 60014, + 60325, + 60630, + 60934, + 61239, + 61537, + 61822, + 62084, + 62346, + 62602, + 62837, + 63072, + 63302, + 63517, + 63732, + 63939, + 64145, + 64342, + 64528, + 64701, + 64867, + 65023, + 65151, + 65279, + 65407, + 65535, + + + + + + 0, + 5099, + 9982, + 14760, + 19538, + 24213, + 28595, + 32976, + 36994, + 41012, + 44944, + 48791, + 52557, + 56009, + 59388, + 62694, + 65535, + 0, + 9955, + 19697, + 28825, + 36842, + 44686, + 52198, + 58939, + 65535, + 0, + 8949, + 17335, + 25720, + 33926, + 41957, + 49987, + 57845, + 65535, + 0, + 9724, + 18642, + 26998, + 35355, + 43532, + 51534, + 59365, + 65535, + 0, + 8750, + 17499, + 26249, + + + + + + 34448, + 42471, + 50494, + 58178, + 65535, + 0, + 8730, + 17273, + 25816, + 34176, + 42536, + 50203, + 57869, + 65535, + 0, + 8769, + 17538, + 26307, + 34525, + 42742, + 50784, + 58319, + 65535, + 0, + 8736, + 17101, + 25466, + 33653, + 41839, + 50025, + 57864, + 65535, + 0, + 4368, + 8735, + 12918, + 17100, + 21283, + 25465, + 29558, + 33651, + 37744, + 41836, + 45929, + 50022, + 54027, + 57947, + 61782, + + + + + + 65535 +}; + +const SKP_uint16 * const SKP_Silk_NLSF_MSVQ_CB0_16_CDF_start_ptr[ NLSF_MSVQ_CB0_16_STAGES ] = +{ + &SKP_Silk_NLSF_MSVQ_CB0_16_CDF[ 0 ], + &SKP_Silk_NLSF_MSVQ_CB0_16_CDF[ 129 ], + &SKP_Silk_NLSF_MSVQ_CB0_16_CDF[ 146 ], + &SKP_Silk_NLSF_MSVQ_CB0_16_CDF[ 155 ], + &SKP_Silk_NLSF_MSVQ_CB0_16_CDF[ 164 ], + &SKP_Silk_NLSF_MSVQ_CB0_16_CDF[ 173 ], + &SKP_Silk_NLSF_MSVQ_CB0_16_CDF[ 182 ], + &SKP_Silk_NLSF_MSVQ_CB0_16_CDF[ 191 ], + &SKP_Silk_NLSF_MSVQ_CB0_16_CDF[ 200 ], + &SKP_Silk_NLSF_MSVQ_CB0_16_CDF[ 209 ] +}; + +const SKP_int SKP_Silk_NLSF_MSVQ_CB0_16_CDF_middle_idx[ NLSF_MSVQ_CB0_16_STAGES ] = +{ + 42, + 8, + 4, + 5, + 5, + 5, + 5, + 5, + 5, + 9 +}; + +const SKP_int16 SKP_Silk_NLSF_MSVQ_CB0_16_rates_Q5[ NLSF_MSVQ_CB0_16_VECTORS ] = +{ + 176, 181, + 182, 183, + 186, 186, + 191, 191, + 191, 196, + 197, 201, + 203, 206, + 206, 206, + 207, 207, + 209, 209, + 209, 209, + 210, 210, + 210, 211, + 211, 211, + 212, 214, + + + + + + 216, 216, + 217, 217, + 217, 217, + 218, 218, + 219, 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129, 130, + 131, 132 +}; + +const SKP_int SKP_Silk_NLSF_MSVQ_CB0_16_ndelta_min_Q15[ 16 + 1 ] = + + + + + +{ + 266, + 3, + 40, + 3, + 3, + 16, + 78, + 89, + 107, + 141, + 188, + 146, + 272, + 240, + 235, + 215, + 632 +}; + +const SKP_int16 SKP_Silk_NLSF_MSVQ_CB0_16_Q15[ 16 * NLSF_MSVQ_CB0_16_VECTORS ] = +{ + 1170, 2278, 3658, 5374, + 7666, 9113, 11298, 13304, + 15371, 17549, 19587, 21487, + 23798, 26038, 28318, 30201, + 1628, 2334, 4115, 6036, + 7818, 9544, 11777, 14021, + 15787, 17408, 19466, 21261, + 22886, 24565, 26714, 28059, + 1724, 2670, 4056, 6532, + 8357, 10119, 12093, 14061, + 16491, 18795, 20417, 22402, + 24251, 26224, 28410, 29956, + 1493, 3427, 4789, 6399, + 8435, 10168, 12000, 14066, + 16229, 18210, 20040, 22098, + 24153, 26095, 28183, 30121, + 1119, 2089, 4295, 6245, + 8691, 10741, 12688, 15057, + 17028, 18792, 20717, 22514, + 24497, 26548, 28619, 30630, + 1363, 2417, 3927, 5556, + 7422, 9315, 11879, 13767, + 16143, 18520, 20458, 22578, + 24539, 26436, 28318, 30318, + 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&SKP_Silk_NLSF_MSVQ_CB0_16_Q15[ 16 * 0 ], &SKP_Silk_NLSF_MSVQ_CB0_16_rates_Q5[ 0 ] }, + { 16, &SKP_Silk_NLSF_MSVQ_CB0_16_Q15[ 16 * 128 ], &SKP_Silk_NLSF_MSVQ_CB0_16_rates_Q5[ 128 ] }, + { 8, &SKP_Silk_NLSF_MSVQ_CB0_16_Q15[ 16 * 144 ], &SKP_Silk_NLSF_MSVQ_CB0_16_rates_Q5[ 144 ] }, + { 8, &SKP_Silk_NLSF_MSVQ_CB0_16_Q15[ 16 * 152 ], &SKP_Silk_NLSF_MSVQ_CB0_16_rates_Q5[ 152 ] }, + { 8, &SKP_Silk_NLSF_MSVQ_CB0_16_Q15[ 16 * 160 ], &SKP_Silk_NLSF_MSVQ_CB0_16_rates_Q5[ 160 ] }, + { 8, &SKP_Silk_NLSF_MSVQ_CB0_16_Q15[ 16 * 168 ], &SKP_Silk_NLSF_MSVQ_CB0_16_rates_Q5[ 168 ] }, + { 8, &SKP_Silk_NLSF_MSVQ_CB0_16_Q15[ 16 * 176 ], &SKP_Silk_NLSF_MSVQ_CB0_16_rates_Q5[ 176 ] }, + { 8, &SKP_Silk_NLSF_MSVQ_CB0_16_Q15[ 16 * 184 ], &SKP_Silk_NLSF_MSVQ_CB0_16_rates_Q5[ 184 ] }, + { 8, &SKP_Silk_NLSF_MSVQ_CB0_16_Q15[ 16 * 192 ], &SKP_Silk_NLSF_MSVQ_CB0_16_rates_Q5[ 192 ] }, + { 16, &SKP_Silk_NLSF_MSVQ_CB0_16_Q15[ 16 * 200 ], &SKP_Silk_NLSF_MSVQ_CB0_16_rates_Q5[ 200 ] } +}; + +const SKP_Silk_NLSF_CB_struct SKP_Silk_NLSF_CB0_16 = +{ + NLSF_MSVQ_CB0_16_STAGES, + SKP_Silk_NLSF_CB0_16_Stage_info, + SKP_Silk_NLSF_MSVQ_CB0_16_ndelta_min_Q15, + SKP_Silk_NLSF_MSVQ_CB0_16_CDF, + SKP_Silk_NLSF_MSVQ_CB0_16_CDF_start_ptr, + SKP_Silk_NLSF_MSVQ_CB0_16_CDF_middle_idx +}; + + + + + + diff --git a/libs/silk/src/SKP_Silk_tables_NLSF_CB0_16.h b/libs/silk/src/SKP_Silk_tables_NLSF_CB0_16.h new file mode 100644 index 0000000000..f9a3729b18 --- /dev/null +++ b/libs/silk/src/SKP_Silk_tables_NLSF_CB0_16.h @@ -0,0 +1,62 @@ + + +/*********************************************************************** + +Copyright (c) 2006-2010, Skype Limited. All rights reserved. +Redistribution and use in source and binary forms, with or without +modification, (subject to the limitations in the disclaimer below) +are permitted provided that the following conditions are met: +- Redistributions of source code must retain the above copyright notice, +this list of conditions and the following disclaimer. +- Redistributions in binary form must reproduce the above copyright +notice, this list of conditions and the following disclaimer in the +documentation and/or other materials provided with the distribution. +- Neither the name of Skype Limited, nor the names of specific +contributors, may be used to endorse or promote products derived from +this software without specific prior written permission. +NO EXPRESS OR IMPLIED LICENSES TO ANY PARTY'S PATENT RIGHTS ARE GRANTED +BY THIS LICENSE.THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND +CONTRIBUTORS ''AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, +BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND +FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE +COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, +INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT +NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF +USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON +ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT +(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE +OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + +***********************************************************************/ + +#ifndef SKP_SILK_TABLES_NLSF_CB0_16_H +#define SKP_SILK_TABLES_NLSF_CB0_16_H + +#include "SKP_Silk_define.h" + +#ifdef __cplusplus +extern "C" +{ +#endif + +#define NLSF_MSVQ_CB0_16_STAGES 10 +#define NLSF_MSVQ_CB0_16_VECTORS 216 + +/* NLSF codebook entropy coding tables */ +extern const SKP_uint16 SKP_Silk_NLSF_MSVQ_CB0_16_CDF[ NLSF_MSVQ_CB0_16_VECTORS + NLSF_MSVQ_CB0_16_STAGES ]; +extern const SKP_uint16 * const SKP_Silk_NLSF_MSVQ_CB0_16_CDF_start_ptr[ NLSF_MSVQ_CB0_16_STAGES ]; + + + + + +extern const SKP_int SKP_Silk_NLSF_MSVQ_CB0_16_CDF_middle_idx[ NLSF_MSVQ_CB0_16_STAGES ]; + +#ifdef __cplusplus +} +#endif + +#endif + + + diff --git a/libs/silk/src/SKP_Silk_tables_NLSF_CB1_10.c b/libs/silk/src/SKP_Silk_tables_NLSF_CB1_10.c new file mode 100644 index 0000000000..f80c811bf5 --- /dev/null +++ b/libs/silk/src/SKP_Silk_tables_NLSF_CB1_10.c @@ -0,0 +1,642 @@ + + +/*********************************************************************** + +Copyright (c) 2006-2010, Skype Limited. All rights reserved. +Redistribution and use in source and binary forms, with or without +modification, (subject to the limitations in the disclaimer below) +are permitted provided that the following conditions are met: +- Redistributions of source code must retain the above copyright notice, +this list of conditions and the following disclaimer. +- Redistributions in binary form must reproduce the above copyright +notice, this list of conditions and the following disclaimer in the +documentation and/or other materials provided with the distribution. +- Neither the name of Skype Limited, nor the names of specific +contributors, may be used to endorse or promote products derived from +this software without specific prior written permission. +NO EXPRESS OR IMPLIED LICENSES TO ANY PARTY'S PATENT RIGHTS ARE GRANTED +BY THIS LICENSE.THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND +CONTRIBUTORS ''AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, +BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND +FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE +COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, +INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT +NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF +USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON +ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT +(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE +OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + +***********************************************************************/ + +/**********************************************/ +/* This file has been automatically generated */ +/* */ +/* ROM usage: 90+803 Words */ +/**********************************************/ + + + + + + +#include "SKP_Silk_structs.h" +#include "SKP_Silk_tables_NLSF_CB1_10.h" + +const SKP_uint16 SKP_Silk_NLSF_MSVQ_CB1_10_CDF[ NLSF_MSVQ_CB1_10_VECTORS + NLSF_MSVQ_CB1_10_STAGES ] = +{ + 0, + 17096, + 24130, + 28997, + 33179, + 36696, + 40213, + 42493, + 44252, + 45973, + 47551, + 49095, + 50542, + 51898, + 53196, + 54495, + 55685, + 56851, + 57749, + 58628, + 59435, + 60207, + 60741, + 61220, + 61700, + 62179, + 62659, + 63138, + 63617, + 64097, + 64576, + 65056, + 65535, + 0, + 20378, + 33032, + 40395, + 46721, + 51707, + 56585, + 61157, + 65535, + 0, + + + + + + 15055, + 25472, + 35447, + 42501, + 48969, + 54773, + 60212, + 65535, + 0, + 12069, + 22440, + 32812, + 40145, + 46870, + 53595, + 59630, + 65535, + 0, + 10839, + 19954, + 27957, + 35961, + 43965, + 51465, + 58805, + 65535, + 0, + 8933, + 17674, + 26415, + 34785, + 42977, + 50820, + 58496, + 65535 +}; + +const SKP_uint16 * const SKP_Silk_NLSF_MSVQ_CB1_10_CDF_start_ptr[ NLSF_MSVQ_CB1_10_STAGES ] = +{ + &SKP_Silk_NLSF_MSVQ_CB1_10_CDF[ 0 ], + &SKP_Silk_NLSF_MSVQ_CB1_10_CDF[ 33 ], + &SKP_Silk_NLSF_MSVQ_CB1_10_CDF[ 42 ], + &SKP_Silk_NLSF_MSVQ_CB1_10_CDF[ 51 ], + &SKP_Silk_NLSF_MSVQ_CB1_10_CDF[ 60 ], + &SKP_Silk_NLSF_MSVQ_CB1_10_CDF[ 69 ] +}; + +const SKP_int SKP_Silk_NLSF_MSVQ_CB1_10_CDF_middle_idx[ NLSF_MSVQ_CB1_10_STAGES ] = + + + + + +{ + 5, + 3, + 4, + 4, + 5, + 5 +}; + +const SKP_int16 SKP_Silk_NLSF_MSVQ_CB1_10_rates_Q5[ NLSF_MSVQ_CB1_10_VECTORS ] = +{ + 62, 103, + 120, 127, + 135, 135, + 155, 167, + 168, 172, + 173, 176, + 179, 181, + 181, 185, + 186, 198, + 199, 203, + 205, 222, + 227, 227, + 227, 227, + 227, 227, + 227, 227, + 227, 227, + 54, 76, + 101, 108, + 119, 120, + 123, 125, + 68, 85, + 87, 103, + 107, 112, + 115, 116, + 78, 85, + 85, 101, + 105, 105, + 110, 111, + 83, 91, + 97, 97, + 97, 100, + 101, 105, + 92, 93, + 93, 95, + 96, 98, + 99, 103 +}; + + + + + +const SKP_int SKP_Silk_NLSF_MSVQ_CB1_10_ndelta_min_Q15[ 10 + 1 ] = +{ + 462, + 3, + 64, + 74, + 98, + 50, + 97, + 68, + 120, + 53, + 639 +}; + +const SKP_int16 SKP_Silk_NLSF_MSVQ_CB1_10_Q15[ 10 * NLSF_MSVQ_CB1_10_VECTORS ] = +{ + 1877, 4646, + 7712, 10745, + 13964, 17028, + 20239, 23182, + 26471, 29287, + 1612, 3278, + 7086, 9975, + 13228, 16264, + 19596, 22690, + 26037, 28965, + 2169, 3830, + 6460, 8958, + 11960, 14750, + 18408, 21659, + 25018, 28043, + 3680, 6024, + 8986, 12256, + 15201, 18188, + 21741, 24460, + 27484, 30059, + 2584, 5187, + 7799, 10902, + 13179, 15765, + 19017, 22431, + 25891, 28698, + 3731, 5751, + 8650, 11742, + 15090, 17407, + 20391, 23421, + 26228, 29247, + 2107, 6323, + + + + + + 8915, 12226, + 14775, 17791, + 20664, 23679, + 26829, 29353, + 1677, 2870, + 5386, 8077, + 11817, 15176, + 18657, 22006, + 25513, 28689, + 2111, 3625, + 7027, 10588, + 14059, 17193, + 21137, 24260, + 27577, 30036, + 2428, 4010, + 5765, 9376, + 13805, 15821, + 19444, 22389, + 25295, 29310, + 2256, 4628, + 8377, 12441, + 15283, 19462, + 22257, 25551, + 28432, 30304, + 2352, 3675, + 6129, 11868, + 14551, 16655, + 19624, 21883, + 26526, 28849, + 5243, 7248, + 10558, 13269, + 15651, 17919, + 21141, 23827, + 27102, 29519, + 4422, 6725, + 10449, 13273, + 16124, 19921, + 22826, 26061, + 28763, 30583, + 4508, 6291, + 9504, 11809, + 13827, 15950, + 19077, 22084, + 25740, 28658, + 2540, 4297, + 8579, 13578, + 16634, 19101, + 21547, 23887, + + + + + + 26777, 29146, + 3377, 6358, + 10224, 14518, + 17905, 21056, + 23637, 25784, + 28161, 30109, + 4177, 5942, + 8159, 10108, + 12130, 15470, + 20191, 23326, + 26782, 29359, + 2492, 3801, + 6144, 9825, + 16000, 18671, + 20893, 23663, + 25899, 28974, + 3011, 4727, + 6834, 10505, + 12465, 14496, + 17065, 20052, + 25265, 28057, + 4149, 7197, + 12338, 15076, + 18002, 20190, + 22187, 24723, + 27083, 29125, + 2975, 4578, + 6448, 8378, + 9671, 13225, + 19502, 22277, + 26058, 28850, + 4102, 5760, + 7744, 9484, + 10744, 12308, + 14677, 19607, + 24841, 28381, + 4931, 9287, + 12477, 13395, + 13712, 14351, + 16048, 19867, + 24188, 28994, + 4141, 7867, + 13140, 17720, + 20064, 21108, + 21692, 22722, + 23736, 27449, + 4011, 8720, + 13234, 16206, + + + + + + 17601, 18289, + 18524, 19689, + 23234, 27882, + 3420, 5995, + 11230, 15117, + 15907, 16783, + 17762, 23347, + 26898, 29946, + 3080, 6786, + 10465, 13676, + 18059, 23615, + 27058, 29082, + 29563, 29905, + 3038, 5620, + 9266, 12870, + 18803, 19610, + 20010, 20802, + 23882, 29306, + 3314, 6420, + 9046, 13262, + 15869, 23117, + 23667, 24215, + 24487, 25915, + 3469, 6963, + 10103, 15282, + 20531, 23240, + 25024, 26021, + 26736, 27255, + 3041, 6459, + 9777, 12896, + 16315, 19410, + 24070, 29353, + 31795, 32075, + -200, -134, + -113, -204, + -347, -440, + -352, -211, + -418, -172, + -313, 59, + 495, 772, + 721, 614, + 334, 444, + 225, 242, + 161, 16, + 274, 564, + -73, -188, + -395, -171, + 777, 508, + + + + + + 1340, 1145, + 699, 196, + 223, 173, + 90, 25, + -26, 18, + 133, -105, + -360, -277, + 859, 634, + 41, -557, + -768, -926, + -601, -1021, + -1189, -365, + 225, 107, + 374, -50, + 433, 417, + 156, 39, + -597, -1397, + -1594, -592, + -485, -292, + 253, 87, + -0, -6, + -25, -345, + -240, 120, + 1261, 946, + 166, -277, + 241, 167, + 170, 429, + 518, 714, + 602, 254, + 134, 92, + -152, -324, + -394, 49, + -151, -304, + -724, -657, + -162, -369, + -35, 3, + -2, -312, + -200, -92, + -227, 242, + 628, 565, + -124, 1056, + 770, 101, + -84, -33, + 4, -192, + -272, 5, + -627, -977, + 419, 472, + 53, -103, + + + + + + 145, 322, + -95, -31, + -100, -303, + -560, -1067, + -413, 714, + 283, 2, + -223, -367, + 523, 360, + -38, -115, + 378, -591, + -718, 448, + -481, -274, + 180, -88, + -581, -157, + -696, -1265, + 394, -479, + -23, 124, + -43, 19, + -113, -236, + -412, -659, + -200, 2, + -69, -342, + 199, 55, + 58, -36, + -51, -62, + 507, 507, + 427, 442, + 36, 601, + -141, 68, + 274, 274, + 68, -12, + -4, 71, + -193, -464, + -425, -383, + 408, 203, + -337, 236, + 410, -59, + -25, -341, + -449, 28, + -9, 90, + 332, -14, + -905, 96, + -540, -242, + 679, -59, + 192, -24, + 60, -217, + 5, -37, + 179, -20, + + + + + + 311, 519, + 274, 72, + -326, -1030, + -262, 213, + 380, 82, + 328, 411, + -540, 574, + -283, 151, + 181, -402, + -278, -240, + -110, -227, + -264, -89, + -250, -259, + -27, 106, + -239, -98, + -390, 118, + 61, 104, + 294, 532, + 92, -13, + 60, -233, + 335, 541, + 307, -26, + -110, -91, + -231, -460, + 170, 201, + 96, -372, + 132, 435, + -302, 216, + -279, -41, + 74, 190, + 368, 273, + -186, -608, + -157, 159, + 12, 278, + 245, 307, + 25, -187, + -16, 55, + 30, -163, + 548, -307, + 106, -5, + 27, 330, + -416, 475, + 438, -235, + 104, 137, + 21, -5, + -300, -468, + 521, -347, + 170, -200, + + + + + + -219, 308, + -122, -133, + 219, -16, + 359, 412, + -89, -111, + 48, 322, + 142, 177, + -286, -127, + -39, -63, + -42, -451, + 160, 308, + -57, 193, + -48, 74, + -346, 59, + -27, 27, + -469, -277, + -344, 282, + 262, 122, + 171, -249, + 27, 258, + 188, -3, + 67, -206, + -284, 291, + -117, -88, + -477, 375, + 50, 106, + 99, -182, + 438, -376, + -401, -49, + 119, -23, + -10, -48, + -116, -200, + -310, 121, + 73, 7, + 237, -226, + 139, -456, + 397, 35, + 3, -108, + 323, -75, + 332, 198, + -99, -21 +}; + +const SKP_Silk_NLSF_CB_Stage_struct SKP_Silk_NLSF_CB1_10_Stage_info[ NLSF_MSVQ_CB1_10_STAGES ] = +{ + { 32, &SKP_Silk_NLSF_MSVQ_CB1_10_Q15[ 10 * 0 ], &SKP_Silk_NLSF_MSVQ_CB1_10_rates_Q5[ 0 ] }, + { 8, &SKP_Silk_NLSF_MSVQ_CB1_10_Q15[ 10 * 32 ], &SKP_Silk_NLSF_MSVQ_CB1_10_rates_Q5[ 32 ] }, + { 8, &SKP_Silk_NLSF_MSVQ_CB1_10_Q15[ 10 * 40 ], &SKP_Silk_NLSF_MSVQ_CB1_10_rates_Q5[ 40 ] }, + + + + + + { 8, &SKP_Silk_NLSF_MSVQ_CB1_10_Q15[ 10 * 48 ], &SKP_Silk_NLSF_MSVQ_CB1_10_rates_Q5[ 48 ] }, + { 8, &SKP_Silk_NLSF_MSVQ_CB1_10_Q15[ 10 * 56 ], &SKP_Silk_NLSF_MSVQ_CB1_10_rates_Q5[ 56 ] }, + { 8, &SKP_Silk_NLSF_MSVQ_CB1_10_Q15[ 10 * 64 ], &SKP_Silk_NLSF_MSVQ_CB1_10_rates_Q5[ 64 ] } +}; + +const SKP_Silk_NLSF_CB_struct SKP_Silk_NLSF_CB1_10 = +{ + NLSF_MSVQ_CB1_10_STAGES, + SKP_Silk_NLSF_CB1_10_Stage_info, + SKP_Silk_NLSF_MSVQ_CB1_10_ndelta_min_Q15, + SKP_Silk_NLSF_MSVQ_CB1_10_CDF, + SKP_Silk_NLSF_MSVQ_CB1_10_CDF_start_ptr, + SKP_Silk_NLSF_MSVQ_CB1_10_CDF_middle_idx +}; + + + diff --git a/libs/silk/src/SKP_Silk_tables_NLSF_CB1_10.h b/libs/silk/src/SKP_Silk_tables_NLSF_CB1_10.h new file mode 100644 index 0000000000..a734258e2c --- /dev/null +++ b/libs/silk/src/SKP_Silk_tables_NLSF_CB1_10.h @@ -0,0 +1,61 @@ + + +/*********************************************************************** + +Copyright (c) 2006-2010, Skype Limited. All rights reserved. +Redistribution and use in source and binary forms, with or without +modification, (subject to the limitations in the disclaimer below) +are permitted provided that the following conditions are met: +- Redistributions of source code must retain the above copyright notice, +this list of conditions and the following disclaimer. +- Redistributions in binary form must reproduce the above copyright +notice, this list of conditions and the following disclaimer in the +documentation and/or other materials provided with the distribution. +- Neither the name of Skype Limited, nor the names of specific +contributors, may be used to endorse or promote products derived from +this software without specific prior written permission. +NO EXPRESS OR IMPLIED LICENSES TO ANY PARTY'S PATENT RIGHTS ARE GRANTED +BY THIS LICENSE.THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND +CONTRIBUTORS ''AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, +BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND +FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE +COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, +INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT +NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF +USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON +ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT +(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE +OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + +***********************************************************************/ + + + + + +#ifndef SKP_SILK_TABLES_NLSF_CB1_10_H +#define SKP_SILK_TABLES_NLSF_CB1_10_H + +#include "SKP_Silk_define.h" + +#ifdef __cplusplus +extern "C" +{ +#endif + +#define NLSF_MSVQ_CB1_10_STAGES 6 +#define NLSF_MSVQ_CB1_10_VECTORS 72 + +/* NLSF codebook entropy coding tables */ +extern const SKP_uint16 SKP_Silk_NLSF_MSVQ_CB1_10_CDF[ NLSF_MSVQ_CB1_10_VECTORS + NLSF_MSVQ_CB1_10_STAGES ]; +extern const SKP_uint16 * const SKP_Silk_NLSF_MSVQ_CB1_10_CDF_start_ptr[ NLSF_MSVQ_CB1_10_STAGES ]; +extern const SKP_int SKP_Silk_NLSF_MSVQ_CB1_10_CDF_middle_idx[ NLSF_MSVQ_CB1_10_STAGES ]; + +#ifdef __cplusplus +} +#endif + +#endif + + + diff --git a/libs/silk/src/SKP_Silk_tables_NLSF_CB1_16.c b/libs/silk/src/SKP_Silk_tables_NLSF_CB1_16.c new file mode 100644 index 0000000000..bce34b4fd0 --- /dev/null +++ b/libs/silk/src/SKP_Silk_tables_NLSF_CB1_16.c @@ -0,0 +1,784 @@ + + +/*********************************************************************** + +Copyright (c) 2006-2010, Skype Limited. All rights reserved. +Redistribution and use in source and binary forms, with or without +modification, (subject to the limitations in the disclaimer below) +are permitted provided that the following conditions are met: +- Redistributions of source code must retain the above copyright notice, +this list of conditions and the following disclaimer. +- Redistributions in binary form must reproduce the above copyright +notice, this list of conditions and the following disclaimer in the +documentation and/or other materials provided with the distribution. +- Neither the name of Skype Limited, nor the names of specific +contributors, may be used to endorse or promote products derived from +this software without specific prior written permission. +NO EXPRESS OR IMPLIED LICENSES TO ANY PARTY'S PATENT RIGHTS ARE GRANTED +BY THIS LICENSE.THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND +CONTRIBUTORS ''AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, +BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND +FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE + + + + + +COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, +INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT +NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF +USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON +ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT +(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE +OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + +***********************************************************************/ + +/**********************************************/ +/* This file has been automatically generated */ +/* */ +/* ROM usage: 134+1785 Words */ +/**********************************************/ + +#include "SKP_Silk_structs.h" +#include "SKP_Silk_tables_NLSF_CB1_16.h" + +const SKP_uint16 SKP_Silk_NLSF_MSVQ_CB1_16_CDF[ NLSF_MSVQ_CB1_16_VECTORS + NLSF_MSVQ_CB1_16_STAGES ] = +{ + 0, + 19099, + 26957, + 30639, + 34242, + 37546, + 40447, + 43287, + 46005, + 48445, + 49865, + 51284, + 52673, + 53975, + 55221, + 56441, + 57267, + 58025, + 58648, + 59232, + 59768, + 60248, + 60729, + 61210, + 61690, + 62171, + 62651, + + + + + + 63132, + 63613, + 64093, + 64574, + 65054, + 65535, + 0, + 28808, + 38775, + 46801, + 51785, + 55886, + 59410, + 62572, + 65535, + 0, + 27376, + 38639, + 45052, + 51465, + 55448, + 59021, + 62594, + 65535, + 0, + 33403, + 39569, + 45102, + 49961, + 54047, + 57959, + 61788, + 65535, + 0, + 25851, + 43356, + 47828, + 52204, + 55964, + 59413, + 62507, + 65535, + 0, + 34277, + 40337, + 45432, + 50311, + 54326, + + + + + + 58171, + 61853, + 65535, + 0, + 33538, + 39865, + 45302, + 50076, + 54549, + 58478, + 62159, + 65535, + 0, + 27445, + 35258, + 40665, + 46072, + 51362, + 56540, + 61086, + 65535, + 0, + 22080, + 30779, + 37065, + 43085, + 48849, + 54613, + 60133, + 65535, + 0, + 13417, + 21748, + 30078, + 38231, + 46383, + 53091, + 59515, + 65535 +}; + +const SKP_uint16 * const SKP_Silk_NLSF_MSVQ_CB1_16_CDF_start_ptr[ NLSF_MSVQ_CB1_16_STAGES ] = +{ + &SKP_Silk_NLSF_MSVQ_CB1_16_CDF[ 0 ], + &SKP_Silk_NLSF_MSVQ_CB1_16_CDF[ 33 ], + &SKP_Silk_NLSF_MSVQ_CB1_16_CDF[ 42 ], + &SKP_Silk_NLSF_MSVQ_CB1_16_CDF[ 51 ], + &SKP_Silk_NLSF_MSVQ_CB1_16_CDF[ 60 ], + + + + + + &SKP_Silk_NLSF_MSVQ_CB1_16_CDF[ 69 ], + &SKP_Silk_NLSF_MSVQ_CB1_16_CDF[ 78 ], + &SKP_Silk_NLSF_MSVQ_CB1_16_CDF[ 87 ], + &SKP_Silk_NLSF_MSVQ_CB1_16_CDF[ 96 ], + &SKP_Silk_NLSF_MSVQ_CB1_16_CDF[ 105 ] +}; + +const SKP_int SKP_Silk_NLSF_MSVQ_CB1_16_CDF_middle_idx[ NLSF_MSVQ_CB1_16_STAGES ] = +{ + 5, + 2, + 2, + 2, + 2, + 2, + 2, + 3, + 3, + 4 +}; + +const SKP_int16 SKP_Silk_NLSF_MSVQ_CB1_16_rates_Q5[ NLSF_MSVQ_CB1_16_VECTORS ] = +{ + 57, 98, + 133, 134, + 138, 144, + 145, 147, + 152, 177, + 177, 178, + 181, 183, + 184, 202, + 206, 215, + 218, 222, + 227, 227, + 227, 227, + 227, 227, + 227, 227, + 227, 227, + 227, 227, + 38, 87, + 97, 119, + 128, 135, + 140, 143, + 40, 81, + 107, 107, + 129, 134, + 134, 143, + 31, 109, + + + + + + 114, 120, + 128, 130, + 131, 132, + 43, 61, + 124, 125, + 132, 136, + 141, 142, + 30, 110, + 118, 120, + 129, 131, + 133, 133, + 31, 108, + 115, 121, + 124, 130, + 133, 137, + 40, 98, + 115, 115, + 116, 117, + 123, 124, + 50, 93, + 108, 110, + 112, 112, + 114, 115, + 73, 95, + 95, 96, + 96, 105, + 107, 110 +}; + +const SKP_int SKP_Silk_NLSF_MSVQ_CB1_16_ndelta_min_Q15[ 16 + 1 ] = +{ + 148, + 3, + 60, + 68, + 117, + 86, + 121, + 124, + 152, + 153, + 207, + 151, + 225, + 239, + 126, + 183, + 792 + + + + + +}; + +const SKP_int16 SKP_Silk_NLSF_MSVQ_CB1_16_Q15[ 16 * NLSF_MSVQ_CB1_16_VECTORS ] = +{ + 1309, 3060, 5071, 6996, + 9028, 10938, 12934, 14891, + 16933, 18854, 20792, 22764, + 24753, 26659, 28626, 30501, + 1264, 2745, 4610, 6408, + 8286, 10043, 12084, 14108, + 16118, 18163, 20095, 22164, + 24264, 26316, 28329, 30251, + 1044, 2080, 3672, 5179, + 7140, 9100, 11070, 13065, + 15423, 17790, 19931, 22101, + 24290, 26361, 28499, 30418, + 1131, 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-70, -2, + 128, -202, -78, 230, + -23, 161, -102, 1, + 1, 180, -31, -86, + -167, -57, -60, 27, + -13, 99, 108, 111, + 76, 69, 34, -21, + 53, 38, 34, 78, + 73, 219, 51, 15, + -72, -103, -207, 30, + 213, -14, 31, -94, + -40, -144, 67, 4, + 105, 59, -240, 25, + 244, 69, 58, 23, + -24, -5, -15, -133, + -71, -67, 181, 29, + -45, 121, 96, 51, + -72, -53, 56, -153, + -27, 85, 183, 211, + 105, -34, -46, 43, + -72, -93, 36, -128, + 29, 111, -95, -156, + -179, -235, 21, -39, + -71, -33, -61, -252, + 230, -131, 157, -21, + -85, -28, -123, 80, + -160, 63, 47, -6, + -49, -96, -19, 17, + -58, 17, -0, -13, + -170, 25, -35, 59, + 10, -31, -413, 81, + 62, 18, -164, 245, + 92, -165, 42, 26, + 126, -248, 193, -55, + 16, 39, 14, 50 +}; + +const SKP_Silk_NLSF_CB_Stage_struct SKP_Silk_NLSF_CB1_16_Stage_info[ NLSF_MSVQ_CB1_16_STAGES ] = +{ + { 32, &SKP_Silk_NLSF_MSVQ_CB1_16_Q15[ 16 * 0 ], &SKP_Silk_NLSF_MSVQ_CB1_16_rates_Q5[ 0 ] }, + { 8, &SKP_Silk_NLSF_MSVQ_CB1_16_Q15[ 16 * 32 ], &SKP_Silk_NLSF_MSVQ_CB1_16_rates_Q5[ 32 ] }, + { 8, &SKP_Silk_NLSF_MSVQ_CB1_16_Q15[ 16 * 40 ], &SKP_Silk_NLSF_MSVQ_CB1_16_rates_Q5[ 40 ] }, + { 8, &SKP_Silk_NLSF_MSVQ_CB1_16_Q15[ 16 * 48 ], &SKP_Silk_NLSF_MSVQ_CB1_16_rates_Q5[ 48 ] }, + { 8, &SKP_Silk_NLSF_MSVQ_CB1_16_Q15[ 16 * 56 ], &SKP_Silk_NLSF_MSVQ_CB1_16_rates_Q5[ 56 ] }, + { 8, &SKP_Silk_NLSF_MSVQ_CB1_16_Q15[ 16 * 64 ], &SKP_Silk_NLSF_MSVQ_CB1_16_rates_Q5[ 64 ] }, + { 8, &SKP_Silk_NLSF_MSVQ_CB1_16_Q15[ 16 * 72 ], &SKP_Silk_NLSF_MSVQ_CB1_16_rates_Q5[ 72 ] }, + { 8, &SKP_Silk_NLSF_MSVQ_CB1_16_Q15[ 16 * 80 ], &SKP_Silk_NLSF_MSVQ_CB1_16_rates_Q5[ 80 ] }, + + + + + + { 8, &SKP_Silk_NLSF_MSVQ_CB1_16_Q15[ 16 * 88 ], &SKP_Silk_NLSF_MSVQ_CB1_16_rates_Q5[ 88 ] }, + { 8, &SKP_Silk_NLSF_MSVQ_CB1_16_Q15[ 16 * 96 ], &SKP_Silk_NLSF_MSVQ_CB1_16_rates_Q5[ 96 ] } +}; + +const SKP_Silk_NLSF_CB_struct SKP_Silk_NLSF_CB1_16 = +{ + NLSF_MSVQ_CB1_16_STAGES, + SKP_Silk_NLSF_CB1_16_Stage_info, + SKP_Silk_NLSF_MSVQ_CB1_16_ndelta_min_Q15, + SKP_Silk_NLSF_MSVQ_CB1_16_CDF, + SKP_Silk_NLSF_MSVQ_CB1_16_CDF_start_ptr, + SKP_Silk_NLSF_MSVQ_CB1_16_CDF_middle_idx +}; + + + diff --git a/libs/silk/src/SKP_Silk_tables_NLSF_CB1_16.h b/libs/silk/src/SKP_Silk_tables_NLSF_CB1_16.h new file mode 100644 index 0000000000..aa69cb0570 --- /dev/null +++ b/libs/silk/src/SKP_Silk_tables_NLSF_CB1_16.h @@ -0,0 +1,62 @@ + + +/*********************************************************************** + +Copyright (c) 2006-2010, Skype Limited. All rights reserved. +Redistribution and use in source and binary forms, with or without +modification, (subject to the limitations in the disclaimer below) +are permitted provided that the following conditions are met: +- Redistributions of source code must retain the above copyright notice, +this list of conditions and the following disclaimer. +- Redistributions in binary form must reproduce the above copyright +notice, this list of conditions and the following disclaimer in the +documentation and/or other materials provided with the distribution. +- Neither the name of Skype Limited, nor the names of specific +contributors, may be used to endorse or promote products derived from +this software without specific prior written permission. +NO EXPRESS OR IMPLIED LICENSES TO ANY PARTY'S PATENT RIGHTS ARE GRANTED +BY THIS LICENSE.THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND +CONTRIBUTORS ''AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, +BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND +FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE +COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, +INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT +NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF +USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON +ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT +(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE +OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + +***********************************************************************/ + + + + + + +#ifndef SKP_SILK_TABLES_NLSF_CB1_16_H +#define SKP_SILK_TABLES_NLSF_CB1_16_H + +#include "SKP_Silk_define.h" + +#ifdef __cplusplus +extern "C" +{ +#endif + +#define NLSF_MSVQ_CB1_16_STAGES 10 +#define NLSF_MSVQ_CB1_16_VECTORS 104 + +/* NLSF codebook entropy coding tables */ +extern const SKP_uint16 SKP_Silk_NLSF_MSVQ_CB1_16_CDF[ NLSF_MSVQ_CB1_16_VECTORS + NLSF_MSVQ_CB1_16_STAGES ]; +extern const SKP_uint16 * const SKP_Silk_NLSF_MSVQ_CB1_16_CDF_start_ptr[ NLSF_MSVQ_CB1_16_STAGES ]; +extern const SKP_int SKP_Silk_NLSF_MSVQ_CB1_16_CDF_middle_idx[ NLSF_MSVQ_CB1_16_STAGES ]; + +#ifdef __cplusplus +} +#endif + +#endif + + + diff --git a/libs/silk/src/SKP_Silk_tables_gain.c b/libs/silk/src/SKP_Silk_tables_gain.c new file mode 100644 index 0000000000..428c9611ae --- /dev/null +++ b/libs/silk/src/SKP_Silk_tables_gain.c @@ -0,0 +1,92 @@ + + +/*********************************************************************** + + + + + +Copyright (c) 2006-2010, Skype Limited. All rights reserved. +Redistribution and use in source and binary forms, with or without +modification, (subject to the limitations in the disclaimer below) +are permitted provided that the following conditions are met: +- Redistributions of source code must retain the above copyright notice, +this list of conditions and the following disclaimer. +- Redistributions in binary form must reproduce the above copyright +notice, this list of conditions and the following disclaimer in the +documentation and/or other materials provided with the distribution. +- Neither the name of Skype Limited, nor the names of specific +contributors, may be used to endorse or promote products derived from +this software without specific prior written permission. +NO EXPRESS OR IMPLIED LICENSES TO ANY PARTY'S PATENT RIGHTS ARE GRANTED +BY THIS LICENSE.THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND +CONTRIBUTORS ''AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, +BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND +FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE +COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, +INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT +NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF +USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON +ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT +(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE +OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + +***********************************************************************/ + +#include "SKP_Silk_tables.h" + +#ifdef __cplusplus +extern "C" +{ +#endif + +const SKP_uint16 SKP_Silk_gain_CDF[ 2 ][ 65 ] = +{ +{ + 0, 18, 45, 94, 181, 320, 519, 777, + 1093, 1468, 1909, 2417, 2997, 3657, 4404, 5245, + 6185, 7228, 8384, 9664, 11069, 12596, 14244, 16022, + 17937, 19979, 22121, 24345, 26646, 29021, 31454, 33927, + 36438, 38982, 41538, 44068, 46532, 48904, 51160, 53265, + 55184, 56904, 58422, 59739, 60858, 61793, 62568, 63210, + 63738, 64165, 64504, 64769, 64976, 65133, 65249, 65330, + 65386, 65424, 65451, 65471, 65487, 65501, 65513, 65524, + 65535 +}, +{ + + + + + + 0, 214, 581, 1261, 2376, 3920, 5742, 7632, + 9449, 11157, 12780, 14352, 15897, 17427, 18949, 20462, + 21957, 23430, 24889, 26342, 27780, 29191, 30575, 31952, + 33345, 34763, 36200, 37642, 39083, 40519, 41930, 43291, + 44602, 45885, 47154, 48402, 49619, 50805, 51959, 53069, + 54127, 55140, 56128, 57101, 58056, 58979, 59859, 60692, + 61468, 62177, 62812, 63368, 63845, 64242, 64563, 64818, + 65023, 65184, 65306, 65391, 65447, 65482, 65505, 65521, + 65535 +} +}; + +const SKP_int SKP_Silk_gain_CDF_offset = 32; + + +const SKP_uint16 SKP_Silk_delta_gain_CDF[ 46 ] = { + 0, 2358, 3856, 7023, 15376, 53058, 59135, 61555, + 62784, 63498, 63949, 64265, 64478, 64647, 64783, 64894, + 64986, 65052, 65113, 65169, 65213, 65252, 65284, 65314, + 65338, 65359, 65377, 65392, 65403, 65415, 65424, 65432, + 65440, 65448, 65455, 65462, 65470, 65477, 65484, 65491, + 65499, 65506, 65513, 65521, 65528, 65535 +}; + +const SKP_int SKP_Silk_delta_gain_CDF_offset = 5; + +#ifdef __cplusplus +} +#endif + + diff --git a/libs/silk/src/SKP_Silk_tables_ltp.c b/libs/silk/src/SKP_Silk_tables_ltp.c new file mode 100644 index 0000000000..14e72ba2e7 --- /dev/null +++ b/libs/silk/src/SKP_Silk_tables_ltp.c @@ -0,0 +1,365 @@ + + +/*********************************************************************** + +Copyright (c) 2006-2010, Skype Limited. All rights reserved. +Redistribution and use in source and binary forms, with or without +modification, (subject to the limitations in the disclaimer below) +are permitted provided that the following conditions are met: +- Redistributions of source code must retain the above copyright notice, +this list of conditions and the following disclaimer. +- Redistributions in binary form must reproduce the above copyright +notice, this list of conditions and the following disclaimer in the +documentation and/or other materials provided with the distribution. +- Neither the name of Skype Limited, nor the names of specific +contributors, may be used to endorse or promote products derived from +this software without specific prior written permission. + + + + + +NO EXPRESS OR IMPLIED LICENSES TO ANY PARTY'S PATENT RIGHTS ARE GRANTED +BY THIS LICENSE.THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND +CONTRIBUTORS ''AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, +BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND +FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE +COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, +INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT +NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF +USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON +ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT +(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE +OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + +***********************************************************************/ + +#include "SKP_Silk_tables.h" + +const SKP_uint16 SKP_Silk_LTP_per_index_CDF[ 4 ] = { + 0, 20992, 40788, 65535 +}; + +const SKP_int SKP_Silk_LTP_per_index_CDF_offset = 1; + + +const SKP_uint16 SKP_Silk_LTP_gain_CDF_0[ 11 ] = { + 0, 49380, 54463, 56494, 58437, 60101, 61683, 62985, + 64066, 64823, 65535 +}; + +const SKP_uint16 SKP_Silk_LTP_gain_CDF_1[ 21 ] = { + 0, 25290, 30654, 35710, 40386, 42937, 45250, 47459, + 49411, 51348, 52974, 54517, 55976, 57423, 58865, 60285, + 61667, 62895, 63827, 64724, 65535 +}; + +const SKP_uint16 SKP_Silk_LTP_gain_CDF_2[ 41 ] = { + 0, 4958, 9439, 13581, 17638, 21651, 25015, 28025, + 30287, 32406, 34330, 36240, 38130, 39790, 41281, 42764, + 44229, 45676, 47081, 48431, 49675, 50849, 51932, 52966, + 53957, 54936, 55869, 56789, 57708, 58504, 59285, 60043, + 60796, 61542, 62218, 62871, 63483, 64076, 64583, 65062, + 65535 +}; + +const SKP_int SKP_Silk_LTP_gain_CDF_offsets[ 3 ] = { + 1, 3, 10 +}; + + + + + + +const SKP_int32 SKP_Silk_LTP_gain_middle_avg_RD_Q14 = 11010; + +const SKP_int16 SKP_Silk_LTP_gain_BITS_Q6_0[ 10 ] = { + 26, 236, 321, 325, 339, 344, 362, 379, + 412, 418 +}; + +const SKP_int16 SKP_Silk_LTP_gain_BITS_Q6_1[ 20 ] = { + 88, 231, 237, 244, 300, 309, 313, 324, + 325, 341, 346, 351, 352, 352, 354, 356, + 367, 393, 396, 406 +}; + +const SKP_int16 SKP_Silk_LTP_gain_BITS_Q6_2[ 40 ] = { + 238, 248, 255, 257, 258, 274, 284, 311, + 317, 326, 326, 327, 339, 349, 350, 351, + 352, 355, 358, 366, 371, 379, 383, 387, + 388, 393, 394, 394, 407, 409, 412, 412, + 413, 422, 426, 432, 434, 449, 454, 455 +}; + +const SKP_uint16 * const SKP_Silk_LTP_gain_CDF_ptrs[ NB_LTP_CBKS ] = { + SKP_Silk_LTP_gain_CDF_0, + SKP_Silk_LTP_gain_CDF_1, + SKP_Silk_LTP_gain_CDF_2 +}; + +const SKP_int16 * const SKP_Silk_LTP_gain_BITS_Q6_ptrs[ NB_LTP_CBKS ] = { + SKP_Silk_LTP_gain_BITS_Q6_0, + SKP_Silk_LTP_gain_BITS_Q6_1, + SKP_Silk_LTP_gain_BITS_Q6_2 +}; + +const SKP_int16 SKP_Silk_LTP_gain_vq_0_Q14[ 10 ][ 5 ] = +{ +{ + 594, 984, 2840, 1021, 669 +}, +{ + 10, 35, 304, -1, 23 +}, +{ + -694, 1923, 4603, 2975, 2335 +}, +{ + 2437, 3176, 3778, 1940, 481 +}, +{ + + + + + + 214, -46, 7870, 4406, -521 +}, +{ + -896, 4818, 8501, 1623, -887 +}, +{ + -696, 3178, 6480, -302, 1081 +}, +{ + 517, 599, 1002, 567, 560 +}, +{ + -2075, -834, 4712, -340, 896 +}, +{ + 1435, -644, 3993, -612, -2063 +} +}; + +const SKP_int16 SKP_Silk_LTP_gain_vq_1_Q14[ 20 ][ 5 ] = +{ +{ + 1655, 2918, 5001, 3010, 1775 +}, +{ + 113, 198, 856, 176, 178 +}, +{ + -843, 2479, 7858, 5371, 574 +}, +{ + 59, 5356, 7648, 2850, -315 +}, +{ + 3840, 4851, 6527, 1583, -1233 +}, +{ + 1620, 1760, 2330, 1876, 2045 +}, +{ + -545, 1854, 11792, 1547, -307 +}, +{ + -604, 689, 5369, 5074, 4265 +}, +{ + 521, -1331, 9829, 6209, -1211 +}, + + + + + +{ + -1315, 6747, 9929, -1410, 546 +}, +{ + 117, -144, 2810, 1649, 5240 +}, +{ + 5392, 3476, 2425, -38, 633 +}, +{ + 14, -449, 5274, 3547, -171 +}, +{ + -98, 395, 9114, 1676, 844 +}, +{ + -908, 3843, 8861, -957, 1474 +}, +{ + 396, 6747, 5379, -329, 1269 +}, +{ + -335, 2830, 4281, 270, -54 +}, +{ + 1502, 5609, 8958, 6045, 2059 +}, +{ + -370, 479, 5267, 5726, 1174 +}, +{ + 5237, -1144, 6510, 455, 512 +} +}; + +const SKP_int16 SKP_Silk_LTP_gain_vq_2_Q14[ 40 ][ 5 ] = +{ +{ + -278, 415, 9345, 7106, -431 +}, +{ + -1006, 3863, 9524, 4724, -871 +}, +{ + -954, 4624, 11722, 973, -300 +}, +{ + -117, 7066, 8331, 1959, -901 + + + + + +}, +{ + 593, 3412, 6070, 4914, 1567 +}, +{ + 54, -51, 12618, 4228, -844 +}, +{ + 3157, 4822, 5229, 2313, 717 +}, +{ + -244, 1161, 14198, 779, 69 +}, +{ + -1218, 5603, 12894, -2301, 1001 +}, +{ + -132, 3960, 9526, 577, 1806 +}, +{ + -1633, 8815, 10484, -2452, 895 +}, +{ + 235, 450, 1243, 667, 437 +}, +{ + 959, -2630, 10897, 8772, -1852 +}, +{ + 2420, 2046, 8893, 4427, -1569 +}, +{ + 23, 7091, 8356, -1285, 1508 +}, +{ + -1133, 835, 7662, 6043, 2800 +}, +{ + 439, 391, 11016, 2253, 1362 +}, +{ + -1020, 2876, 13436, 4015, -3020 +}, +{ + 1060, -2690, 13512, 5565, -1394 +}, +{ + -1420, 8007, 11421, -152, -1672 + + + + + +}, +{ + -893, 2895, 15434, -1490, 159 +}, +{ + -1054, 428, 12208, 8538, -3344 +}, +{ + 1772, -1304, 7593, 6185, 561 +}, +{ + 525, -1207, 6659, 11151, -1170 +}, +{ + 439, 2667, 4743, 2359, 5515 +}, +{ + 2951, 7432, 7909, -230, -1564 +}, +{ + -72, 2140, 5477, 1391, 1580 +}, +{ + 476, -1312, 15912, 2174, -1027 +}, +{ + 5737, 441, 2493, 2043, 2757 +}, +{ + 228, -43, 1803, 6663, 7064 +}, +{ + 4596, 9182, 1917, -200, 203 +}, +{ + -704, 12039, 5451, -1188, 542 +}, +{ + 1782, -1040, 10078, 7513, -2767 +}, +{ + -2626, 7747, 9019, 62, 1710 +}, +{ + 235, -233, 2954, 10921, 1947 +}, +{ + 10854, 2814, 1232, -111, 222 + + + + + +}, +{ + 2267, 2778, 12325, 156, -1658 +}, +{ + -2950, 8095, 16330, 268, -3626 +}, +{ + 67, 2083, 7950, -80, -2432 +}, +{ + 518, -66, 1718, 415, 11435 +} +}; + +const SKP_int16 * const SKP_Silk_LTP_vq_ptrs_Q14[ NB_LTP_CBKS ] = { + &SKP_Silk_LTP_gain_vq_0_Q14[ 0 ][ 0 ], + &SKP_Silk_LTP_gain_vq_1_Q14[ 0 ][ 0 ], + &SKP_Silk_LTP_gain_vq_2_Q14[ 0 ][ 0 ] +}; + +const SKP_int SKP_Silk_LTP_vq_sizes[ NB_LTP_CBKS ] = { + 10, 20, 40 +}; + + diff --git a/libs/silk/src/SKP_Silk_tables_other.c b/libs/silk/src/SKP_Silk_tables_other.c new file mode 100644 index 0000000000..1f12fbed57 --- /dev/null +++ b/libs/silk/src/SKP_Silk_tables_other.c @@ -0,0 +1,171 @@ + + +/*********************************************************************** + +Copyright (c) 2006-2010, Skype Limited. All rights reserved. +Redistribution and use in source and binary forms, with or without +modification, (subject to the limitations in the disclaimer below) +are permitted provided that the following conditions are met: +- Redistributions of source code must retain the above copyright notice, +this list of conditions and the following disclaimer. +- Redistributions in binary form must reproduce the above copyright +notice, this list of conditions and the following disclaimer in the +documentation and/or other materials provided with the distribution. +- Neither the name of Skype Limited, nor the names of specific +contributors, may be used to endorse or promote products derived from +this software without specific prior written permission. +NO EXPRESS OR IMPLIED LICENSES TO ANY PARTY'S PATENT RIGHTS ARE GRANTED +BY THIS LICENSE.THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND +CONTRIBUTORS ''AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, +BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND +FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE + + + + + +COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, +INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT +NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF +USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON +ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT +(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE +OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + +***********************************************************************/ + +#include "SKP_Silk_structs.h" +#include "SKP_Silk_define.h" +#include "SKP_Silk_tables.h" +#ifdef __cplusplus +extern "C" +{ +#endif + +/* Piece-wise linear mapping from bitrate in kbps to coding quality in dB SNR */ +const SKP_int32 TargetRate_table_NB[ TARGET_RATE_TAB_SZ ] = { + 0, 8000, 9000, 11000, 13000, 16000, 22000, 100000 +}; +const SKP_int32 TargetRate_table_MB[ TARGET_RATE_TAB_SZ ] = { + 0, 10000, 12000, 14000, 17000, 21000, 28000, 100000 +}; +const SKP_int32 TargetRate_table_WB[ TARGET_RATE_TAB_SZ ] = { + 0, 11000, 14000, 17000, 21000, 26000, 36000, 100000 +}; +const SKP_int32 TargetRate_table_SWB[ TARGET_RATE_TAB_SZ ] = { + 0, 13000, 16000, 19000, 25000, 32000, 46000, 100000 +}; +const SKP_int32 SNR_table_Q1[ TARGET_RATE_TAB_SZ ] = { + 19, 31, 35, 39, 43, 47, 54, 59 +}; + +const SKP_int32 SNR_table_one_bit_per_sample_Q7[ 4 ] = { + 1984, 2240, 2408, 2708 +}; + +/* Filter coeficicnts for HP filter: 4. Order filter implementad as two biquad filters */ +const SKP_int16 SKP_Silk_SWB_detect_B_HP_Q13[ NB_SOS ][ 3 ] = { + //{400, -550, 400}, {400, 130, 400}, {400, 390, 400} + {575, -948, 575}, {575, -221, 575}, {575, 104, 575} +}; +const SKP_int16 SKP_Silk_SWB_detect_A_HP_Q13[ NB_SOS ][ 2 ] = { + {14613, 6868}, {12883, 7337}, {11586, 7911} + //{14880, 6900}, {14400, 7300}, {13700, 7800} +}; + + + + + +/* Decoder high-pass filter coefficients for 24 kHz sampling, -6 dB @ 44 Hz */ +const SKP_int16 SKP_Silk_Dec_A_HP_24[ DEC_HP_ORDER ] = {-16220, 8030}; // second order AR coefs, Q13 +const SKP_int16 SKP_Silk_Dec_B_HP_24[ DEC_HP_ORDER + 1 ] = {8000, -16000, 8000}; // second order MA coefs, Q13 + +/* Decoder high-pass filter coefficients for 16 kHz sampling, - 6 dB @ 46 Hz */ +const SKP_int16 SKP_Silk_Dec_A_HP_16[ DEC_HP_ORDER ] = {-16127, 7940}; // second order AR coefs, Q13 +const SKP_int16 SKP_Silk_Dec_B_HP_16[ DEC_HP_ORDER + 1 ] = {8000, -16000, 8000}; // second order MA coefs, Q13 + +/* Decoder high-pass filter coefficients for 12 kHz sampling, -6 dB @ 44 Hz */ +const SKP_int16 SKP_Silk_Dec_A_HP_12[ DEC_HP_ORDER ] = {-16043, 7859}; // second order AR coefs, Q13 +const SKP_int16 SKP_Silk_Dec_B_HP_12[ DEC_HP_ORDER + 1 ] = {8000, -16000, 8000}; // second order MA coefs, Q13 + +/* Decoder high-pass filter coefficients for 8 kHz sampling, -6 dB @ 43 Hz */ +const SKP_int16 SKP_Silk_Dec_A_HP_8[ DEC_HP_ORDER ] = {-15885, 7710}; // second order AR coefs, Q13 +const SKP_int16 SKP_Silk_Dec_B_HP_8[ DEC_HP_ORDER + 1 ] = {8000, -16000, 8000}; // second order MA coefs, Q13 + +/* table for LSB coding */ +const SKP_uint16 SKP_Silk_lsb_CDF[ 3 ] = {0, 40000, 65535}; + +/* tables for LTPScale */ +const SKP_uint16 SKP_Silk_LTPscale_CDF[ 4 ] = {0, 32000, 48000, 65535}; +const SKP_int SKP_Silk_LTPscale_offset = 2; + +/* tables for VAD flag */ +const SKP_uint16 SKP_Silk_vadflag_CDF[ 3 ] = {0, 22000, 65535}; // 66% for speech, 33% for no speech +const SKP_int SKP_Silk_vadflag_offset = 1; + +/* tables for sampling rate */ +const SKP_int SKP_Silk_SamplingRates_table[ 4 ] = {8, 12, 16, 24}; +const SKP_uint16 SKP_Silk_SamplingRates_CDF[ 5 ] = {0, 16000, 32000, 48000, 65535}; +const SKP_int SKP_Silk_SamplingRates_offset = 2; + +/* tables for NLSF interpolation factor */ +const SKP_uint16 SKP_Silk_NLSF_interpolation_factor_CDF[ 6 ] = {0, 3706, 8703, 19226, 30926, 65535}; +const SKP_int SKP_Silk_NLSF_interpolation_factor_offset = 4; + +/* Table for frame termination indication */ +const SKP_uint16 SKP_Silk_FrameTermination_CDF[ 5 ] = {0, 20000, 45000, 56000, 65535}; +const SKP_int SKP_Silk_FrameTermination_offset = 2; + +const SKP_uint16 SKP_Silk_FrameTermination_v4_CDF[ 6 ] = {0, 13107, 26214, 39321, 52428, 65535}; +const SKP_int SKP_Silk_FrameTermination_v4_offset = 4; + +/* Table for random seed */ +const SKP_uint16 SKP_Silk_Seed_CDF[ 5 ] = {0, 16384, 32768, 49152, 65535}; +const SKP_int SKP_Silk_Seed_offset = 2; + +/* Quantization offsets */ + + + + + +const SKP_int16 SKP_Silk_Quantization_Offsets_Q10[ 2 ][ 2 ] = { + { OFFSET_VL_Q10, OFFSET_VH_Q10 }, { OFFSET_UVL_Q10, OFFSET_UVH_Q10 } +}; + +/* Table for LTPScale */ +const SKP_int16 SKP_Silk_LTPScales_table_Q14[ 3 ] = { 15565, 11469, 8192 }; + +#if SWITCH_TRANSITION_FILTERING +/* Elliptic/Cauer filters designed with 0.1 dB passband ripple, + 80 dB minimum stopband attenuation, and + [0.95 : 0.15 : 0.35] normalized cut off frequencies. */ + +/* Interpolation points for filter coefficients used in the bandwidth transition smoother */ +const SKP_int32 SKP_Silk_Transition_LP_B_Q28[ TRANSITION_INT_NUM ][ TRANSITION_NB ] = +{ +{ 250767114, 501534038, 250767114 }, +{ 209867381, 419732057, 209867381 }, +{ 170987846, 341967853, 170987846 }, +{ 131531482, 263046905, 131531482 }, +{ 89306658, 178584282, 89306658 } +}; + +/* Interpolation points for filter coefficients used in the bandwidth transition smoother */ +const SKP_int32 SKP_Silk_Transition_LP_A_Q28[ TRANSITION_INT_NUM ][ TRANSITION_NA ] = +{ +{ 506393414, 239854379 }, +{ 411067935, 169683996 }, +{ 306733530, 116694253 }, +{ 185807084, 77959395 }, +{ 35497197, 57401098 } +}; +#endif + +#ifdef __cplusplus +} +#endif + + + diff --git a/libs/silk/src/SKP_Silk_tables_pitch_lag.c b/libs/silk/src/SKP_Silk_tables_pitch_lag.c new file mode 100644 index 0000000000..309851d835 --- /dev/null +++ b/libs/silk/src/SKP_Silk_tables_pitch_lag.c @@ -0,0 +1,230 @@ + + +/*********************************************************************** + +Copyright (c) 2006-2010, Skype Limited. All rights reserved. +Redistribution and use in source and binary forms, with or without +modification, (subject to the limitations in the disclaimer below) +are permitted provided that the following conditions are met: + + + + + +- Redistributions of source code must retain the above copyright notice, +this list of conditions and the following disclaimer. +- Redistributions in binary form must reproduce the above copyright +notice, this list of conditions and the following disclaimer in the +documentation and/or other materials provided with the distribution. +- Neither the name of Skype Limited, nor the names of specific +contributors, may be used to endorse or promote products derived from +this software without specific prior written permission. +NO EXPRESS OR IMPLIED LICENSES TO ANY PARTY'S PATENT RIGHTS ARE GRANTED +BY THIS LICENSE.THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND +CONTRIBUTORS ''AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, +BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND +FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE +COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, +INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT +NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF +USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON +ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT +(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE +OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + +***********************************************************************/ + +#include "SKP_Silk_tables.h" + +const SKP_uint16 SKP_Silk_pitch_lag_NB_CDF[ 8 * ( PITCH_EST_MAX_LAG_MS - PITCH_EST_MIN_LAG_MS ) + 2 ] = { + 0, 194, 395, 608, 841, 1099, 1391, 1724, + 2105, 2544, 3047, 3624, 4282, 5027, 5865, 6799, + 7833, 8965, 10193, 11510, 12910, 14379, 15905, 17473, + 19065, 20664, 22252, 23814, 25335, 26802, 28206, 29541, + 30803, 31992, 33110, 34163, 35156, 36098, 36997, 37861, + 38698, 39515, 40319, 41115, 41906, 42696, 43485, 44273, + 45061, 45847, 46630, 47406, 48175, 48933, 49679, 50411, + 51126, 51824, 52502, 53161, 53799, 54416, 55011, 55584, + 56136, 56666, 57174, 57661, 58126, 58570, 58993, 59394, + 59775, 60134, 60472, 60790, 61087, 61363, 61620, 61856, + 62075, 62275, 62458, 62625, 62778, 62918, 63045, 63162, + 63269, 63368, 63459, 63544, 63623, 63698, 63769, 63836, + 63901, 63963, 64023, 64081, 64138, 64194, 64248, 64301, + 64354, 64406, 64457, 64508, 64558, 64608, 64657, 64706, + 64754, 64803, 64851, 64899, 64946, 64994, 65041, 65088, + 65135, 65181, 65227, 65272, 65317, 65361, 65405, 65449, + 65492, 65535 +}; + +const SKP_int SKP_Silk_pitch_lag_NB_CDF_offset = 43; + +const SKP_uint16 SKP_Silk_pitch_contour_NB_CDF[ 12 ] = { + + + + + + 0, 14445, 18587, 25628, 30013, 34859, 40597, 48426, + 54460, 59033, 62990, 65535 +}; + +const SKP_int SKP_Silk_pitch_contour_NB_CDF_offset = 5; + +const SKP_uint16 SKP_Silk_pitch_lag_MB_CDF[ 12 * ( PITCH_EST_MAX_LAG_MS - PITCH_EST_MIN_LAG_MS ) + 2 ] = { + 0, 132, 266, 402, 542, 686, 838, 997, + 1167, 1349, 1546, 1760, 1993, 2248, 2528, 2835, + 3173, 3544, 3951, 4397, 4882, 5411, 5984, 6604, + 7270, 7984, 8745, 9552, 10405, 11300, 12235, 13206, + 14209, 15239, 16289, 17355, 18430, 19507, 20579, 21642, + 22688, 23712, 24710, 25677, 26610, 27507, 28366, 29188, + 29971, 30717, 31427, 32104, 32751, 33370, 33964, 34537, + 35091, 35630, 36157, 36675, 37186, 37692, 38195, 38697, + 39199, 39701, 40206, 40713, 41222, 41733, 42247, 42761, + 43277, 43793, 44309, 44824, 45336, 45845, 46351, 46851, + 47347, 47836, 48319, 48795, 49264, 49724, 50177, 50621, + 51057, 51484, 51902, 52312, 52714, 53106, 53490, 53866, + 54233, 54592, 54942, 55284, 55618, 55944, 56261, 56571, + 56873, 57167, 57453, 57731, 58001, 58263, 58516, 58762, + 58998, 59226, 59446, 59656, 59857, 60050, 60233, 60408, + 60574, 60732, 60882, 61024, 61159, 61288, 61410, 61526, + 61636, 61742, 61843, 61940, 62033, 62123, 62210, 62293, + 62374, 62452, 62528, 62602, 62674, 62744, 62812, 62879, + 62945, 63009, 63072, 63135, 63196, 63256, 63316, 63375, + 63434, 63491, 63549, 63605, 63661, 63717, 63772, 63827, + 63881, 63935, 63988, 64041, 64094, 64147, 64199, 64252, + 64304, 64356, 64409, 64461, 64513, 64565, 64617, 64669, + 64721, 64773, 64824, 64875, 64925, 64975, 65024, 65072, + 65121, 65168, 65215, 65262, 65308, 65354, 65399, 65445, + 65490, 65535 +}; + +const SKP_int SKP_Silk_pitch_lag_MB_CDF_offset = 64; + +const SKP_uint16 SKP_Silk_pitch_lag_WB_CDF[ 16 * ( PITCH_EST_MAX_LAG_MS - PITCH_EST_MIN_LAG_MS ) + 2 ] = { + 0, 106, 213, 321, 429, 539, 651, 766, + 884, 1005, 1132, 1264, 1403, 1549, 1705, 1870, + 2047, 2236, 2439, 2658, 2893, 3147, 3420, 3714, + 4030, 4370, 4736, 5127, 5546, 5993, 6470, 6978, + 7516, 8086, 8687, 9320, 9985, 10680, 11405, 12158, + 12938, 13744, 14572, 15420, 16286, 17166, 18057, 18955, + 19857, 20759, 21657, 22547, 23427, 24293, 25141, 25969, + 26774, 27555, 28310, 29037, 29736, 30406, 31048, 31662, + 32248, 32808, 33343, 33855, 34345, 34815, 35268, 35704, + 36127, 36537, 36938, 37330, 37715, 38095, 38471, 38844, + 39216, 39588, 39959, 40332, 40707, 41084, 41463, 41844, + + + + + + 42229, 42615, 43005, 43397, 43791, 44186, 44583, 44982, + 45381, 45780, 46179, 46578, 46975, 47371, 47765, 48156, + 48545, 48930, 49312, 49690, 50064, 50433, 50798, 51158, + 51513, 51862, 52206, 52544, 52877, 53204, 53526, 53842, + 54152, 54457, 54756, 55050, 55338, 55621, 55898, 56170, + 56436, 56697, 56953, 57204, 57449, 57689, 57924, 58154, + 58378, 58598, 58812, 59022, 59226, 59426, 59620, 59810, + 59994, 60173, 60348, 60517, 60681, 60840, 60993, 61141, + 61284, 61421, 61553, 61679, 61800, 61916, 62026, 62131, + 62231, 62326, 62417, 62503, 62585, 62663, 62737, 62807, + 62874, 62938, 62999, 63057, 63113, 63166, 63217, 63266, + 63314, 63359, 63404, 63446, 63488, 63528, 63567, 63605, + 63642, 63678, 63713, 63748, 63781, 63815, 63847, 63879, + 63911, 63942, 63973, 64003, 64033, 64063, 64092, 64121, + 64150, 64179, 64207, 64235, 64263, 64291, 64319, 64347, + 64374, 64401, 64428, 64455, 64481, 64508, 64534, 64560, + 64585, 64610, 64635, 64660, 64685, 64710, 64734, 64758, + 64782, 64807, 64831, 64855, 64878, 64902, 64926, 64950, + 64974, 64998, 65022, 65045, 65069, 65093, 65116, 65139, + 65163, 65186, 65209, 65231, 65254, 65276, 65299, 65321, + 65343, 65364, 65386, 65408, 65429, 65450, 65471, 65493, + 65514, 65535 +}; + +const SKP_int SKP_Silk_pitch_lag_WB_CDF_offset = 86; + + +const SKP_uint16 SKP_Silk_pitch_lag_SWB_CDF[ 24 * ( PITCH_EST_MAX_LAG_MS - PITCH_EST_MIN_LAG_MS ) + 2 ] = { + 0, 253, 505, 757, 1008, 1258, 1507, 1755, + 2003, 2249, 2494, 2738, 2982, 3225, 3469, 3713, + 3957, 4202, 4449, 4698, 4949, 5203, 5460, 5720, + 5983, 6251, 6522, 6798, 7077, 7361, 7650, 7942, + 8238, 8539, 8843, 9150, 9461, 9775, 10092, 10411, + 10733, 11057, 11383, 11710, 12039, 12370, 12701, 13034, + 13368, 13703, 14040, 14377, 14716, 15056, 15398, 15742, + 16087, 16435, 16785, 17137, 17492, 17850, 18212, 18577, + 18946, 19318, 19695, 20075, 20460, 20849, 21243, 21640, + 22041, 22447, 22856, 23269, 23684, 24103, 24524, 24947, + 25372, 25798, 26225, 26652, 27079, 27504, 27929, 28352, + 28773, 29191, 29606, 30018, 30427, 30831, 31231, 31627, + 32018, 32404, 32786, 33163, 33535, 33902, 34264, 34621, + 34973, 35320, 35663, 36000, 36333, 36662, 36985, 37304, + 37619, 37929, 38234, 38535, 38831, 39122, 39409, 39692, + 39970, 40244, 40513, 40778, 41039, 41295, 41548, 41796, + 42041, 42282, 42520, 42754, 42985, 43213, 43438, 43660, + 43880, 44097, 44312, 44525, 44736, 44945, 45153, 45359, + 45565, 45769, 45972, 46175, 46377, 46578, 46780, 46981, + 47182, 47383, 47585, 47787, 47989, 48192, 48395, 48599, + + + + + + 48804, 49009, 49215, 49422, 49630, 49839, 50049, 50259, + 50470, 50682, 50894, 51107, 51320, 51533, 51747, 51961, + 52175, 52388, 52601, 52813, 53025, 53236, 53446, 53655, + 53863, 54069, 54274, 54477, 54679, 54879, 55078, 55274, + 55469, 55662, 55853, 56042, 56230, 56415, 56598, 56779, + 56959, 57136, 57311, 57484, 57654, 57823, 57989, 58152, + 58314, 58473, 58629, 58783, 58935, 59084, 59230, 59373, + 59514, 59652, 59787, 59919, 60048, 60174, 60297, 60417, + 60533, 60647, 60757, 60865, 60969, 61070, 61167, 61262, + 61353, 61442, 61527, 61609, 61689, 61765, 61839, 61910, + 61979, 62045, 62109, 62170, 62230, 62287, 62343, 62396, + 62448, 62498, 62547, 62594, 62640, 62685, 62728, 62770, + 62811, 62852, 62891, 62929, 62967, 63004, 63040, 63075, + 63110, 63145, 63178, 63212, 63244, 63277, 63308, 63340, + 63371, 63402, 63432, 63462, 63491, 63521, 63550, 63578, + 63607, 63635, 63663, 63690, 63718, 63744, 63771, 63798, + 63824, 63850, 63875, 63900, 63925, 63950, 63975, 63999, + 64023, 64046, 64069, 64092, 64115, 64138, 64160, 64182, + 64204, 64225, 64247, 64268, 64289, 64310, 64330, 64351, + 64371, 64391, 64411, 64431, 64450, 64470, 64489, 64508, + 64527, 64545, 64564, 64582, 64600, 64617, 64635, 64652, + 64669, 64686, 64702, 64719, 64735, 64750, 64766, 64782, + 64797, 64812, 64827, 64842, 64857, 64872, 64886, 64901, + 64915, 64930, 64944, 64959, 64974, 64988, 65003, 65018, + 65033, 65048, 65063, 65078, 65094, 65109, 65125, 65141, + 65157, 65172, 65188, 65204, 65220, 65236, 65252, 65268, + 65283, 65299, 65314, 65330, 65345, 65360, 65375, 65390, + 65405, 65419, 65434, 65449, 65463, 65477, 65492, 65506, + 65521, 65535 +}; + +const SKP_int SKP_Silk_pitch_lag_SWB_CDF_offset = 128; + + +const SKP_uint16 SKP_Silk_pitch_contour_CDF[ 35 ] = { + 0, 372, 843, 1315, 1836, 2644, 3576, 4719, + 6088, 7621, 9396, 11509, 14245, 17618, 20777, 24294, + 27992, 33116, 40100, 44329, 47558, 50679, 53130, 55557, + 57510, 59022, 60285, 61345, 62316, 63140, 63762, 64321, + 64729, 65099, 65535 +}; + +const SKP_int SKP_Silk_pitch_contour_CDF_offset = 17; + +const SKP_uint16 SKP_Silk_pitch_delta_CDF[23] = { + 0, 343, 740, 1249, 1889, 2733, 3861, 5396, + 7552, 10890, 16053, 24152, 30220, 34680, 37973, 40405, + 42243, 43708, 44823, 45773, 46462, 47055, 65535 + + + + + +}; + +const SKP_int SKP_Silk_pitch_delta_CDF_offset = 11; + + diff --git a/libs/silk/src/SKP_Silk_tables_pulses_per_block.c b/libs/silk/src/SKP_Silk_tables_pulses_per_block.c new file mode 100644 index 0000000000..52b2433dea --- /dev/null +++ b/libs/silk/src/SKP_Silk_tables_pulses_per_block.c @@ -0,0 +1,264 @@ + + +/*********************************************************************** + +Copyright (c) 2006-2010, Skype Limited. All rights reserved. +Redistribution and use in source and binary forms, with or without +modification, (subject to the limitations in the disclaimer below) +are permitted provided that the following conditions are met: +- Redistributions of source code must retain the above copyright notice, +this list of conditions and the following disclaimer. +- Redistributions in binary form must reproduce the above copyright +notice, this list of conditions and the following disclaimer in the +documentation and/or other materials provided with the distribution. +- Neither the name of Skype Limited, nor the names of specific +contributors, may be used to endorse or promote products derived from +this software without specific prior written permission. +NO EXPRESS OR IMPLIED LICENSES TO ANY PARTY'S PATENT RIGHTS ARE GRANTED +BY THIS LICENSE.THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND +CONTRIBUTORS ''AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, +BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND +FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE +COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, +INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT +NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF +USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON +ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT +(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE +OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + +***********************************************************************/ + +#include "SKP_Silk_tables.h" + +const SKP_int SKP_Silk_max_pulses_table[ 4 ] = { + 6, 8, 12, 18 +}; + +const SKP_uint16 SKP_Silk_pulses_per_block_CDF[ 10 ][ 21 ] = +{ +{ + 0, 47113, 61501, 64590, 65125, 65277, 65352, 65407, + 65450, 65474, 65488, 65501, 65508, 65514, 65516, 65520, + + + + + + 65521, 65523, 65524, 65526, 65535 +}, +{ + 0, 26368, 47760, 58803, 63085, 64567, 65113, 65333, + 65424, 65474, 65498, 65511, 65517, 65520, 65523, 65525, + 65526, 65528, 65529, 65530, 65535 +}, +{ + 0, 9601, 28014, 45877, 57210, 62560, 64611, 65260, + 65447, 65500, 65511, 65519, 65521, 65525, 65526, 65529, + 65530, 65531, 65532, 65534, 65535 +}, +{ + 0, 3351, 12462, 25972, 39782, 50686, 57644, 61525, + 63521, 64506, 65009, 65255, 65375, 65441, 65471, 65488, + 65497, 65505, 65509, 65512, 65535 +}, +{ + 0, 488, 2944, 9295, 19712, 32160, 43976, 53121, + 59144, 62518, 64213, 65016, 65346, 65470, 65511, 65515, + 65525, 65529, 65531, 65534, 65535 +}, +{ + 0, 17013, 30405, 40812, 48142, 53466, 57166, 59845, + 61650, 62873, 63684, 64223, 64575, 64811, 64959, 65051, + 65111, 65143, 65165, 65183, 65535 +}, +{ + 0, 2994, 8323, 15845, 24196, 32300, 39340, 45140, + 49813, 53474, 56349, 58518, 60167, 61397, 62313, 62969, + 63410, 63715, 63906, 64056, 65535 +}, +{ + 0, 88, 721, 2795, 7542, 14888, 24420, 34593, + 43912, 51484, 56962, 60558, 62760, 64037, 64716, 65069, + 65262, 65358, 65398, 65420, 65535 +}, +{ + 0, 287, 789, 2064, 4398, 8174, 13534, 20151, + 27347, 34533, 41295, 47242, 52070, 55772, 58458, 60381, + 61679, 62533, 63109, 63519, 65535 +}, +{ + 0, 1, 3, 91, 4521, 14708, 28329, 41955, + 52116, 58375, 61729, 63534, 64459, 64924, 65092, 65164, + 65182, 65198, 65203, 65211, 65535 +} +}; + + + + + +const SKP_int SKP_Silk_pulses_per_block_CDF_offset = 6; + + +const SKP_int16 SKP_Silk_pulses_per_block_BITS_Q6[ 9 ][ 20 ] = +{ +{ + 30, 140, 282, 444, 560, 625, 654, 677, + 731, 780, 787, 844, 859, 960, 896, 1024, + 960, 1024, 960, 821 +}, +{ + 84, 103, 164, 252, 350, 442, 526, 607, + 663, 731, 787, 859, 923, 923, 960, 1024, + 960, 1024, 1024, 875 +}, +{ + 177, 117, 120, 162, 231, 320, 426, 541, + 657, 803, 832, 960, 896, 1024, 923, 1024, + 1024, 1024, 960, 1024 +}, +{ + 275, 182, 146, 144, 166, 207, 261, 322, + 388, 450, 516, 582, 637, 710, 762, 821, + 832, 896, 923, 734 +}, +{ + 452, 303, 216, 170, 153, 158, 182, 220, + 274, 337, 406, 489, 579, 681, 896, 811, + 896, 960, 923, 1024 +}, +{ + 125, 147, 170, 202, 232, 265, 295, 332, + 368, 406, 443, 483, 520, 563, 606, 646, + 704, 739, 757, 483 +}, +{ + 285, 232, 200, 190, 193, 206, 224, 244, + 266, 289, 315, 340, 367, 394, 425, 462, + 496, 539, 561, 350 +}, +{ + 611, 428, 319, 242, 202, 178, 172, 180, + 199, 229, 268, 313, 364, 422, 482, 538, + 603, 683, 739, 586 +}, +{ + 501, 450, 364, 308, 264, 231, 212, 204, + 204, 210, 222, 241, 265, 295, 326, 362, + + + + + + 401, 437, 469, 321 +} +}; + +const SKP_uint16 SKP_Silk_rate_levels_CDF[ 2 ][ 10 ] = +{ +{ + 0, 2005, 12717, 20281, 31328, 36234, 45816, 57753, + 63104, 65535 +}, +{ + 0, 8553, 23489, 36031, 46295, 53519, 56519, 59151, + 64185, 65535 +} +}; + +const SKP_int SKP_Silk_rate_levels_CDF_offset = 4; + + +const SKP_int16 SKP_Silk_rate_levels_BITS_Q6[ 2 ][ 9 ] = +{ +{ + 322, 167, 199, 164, 239, 178, 157, 231, + 304 +}, +{ + 188, 137, 153, 171, 204, 285, 297, 237, + 358 +} +}; + +const SKP_uint16 SKP_Silk_shell_code_table0[ 33 ] = { + 0, 32748, 65535, 0, 9505, 56230, 65535, 0, + 4093, 32204, 61720, 65535, 0, 2285, 16207, 48750, + 63424, 65535, 0, 1709, 9446, 32026, 55752, 63876, + 65535, 0, 1623, 6986, 21845, 45381, 59147, 64186, + 65535 +}; + +const SKP_uint16 SKP_Silk_shell_code_table1[ 52 ] = { + 0, 32691, 65535, 0, 12782, 52752, 65535, 0, + 4847, 32665, 60899, 65535, 0, 2500, 17305, 47989, + 63369, 65535, 0, 1843, 10329, 32419, 55433, 64277, + 65535, 0, 1485, 7062, 21465, 43414, 59079, 64623, + 65535, 0, 0, 4841, 14797, 31799, 49667, 61309, + 65535, 65535, 0, 0, 0, 8032, 21695, 41078, + 56317, 65535, 65535, 65535 +}; + + + + + +const SKP_uint16 SKP_Silk_shell_code_table2[ 102 ] = { + 0, 32615, 65535, 0, 14447, 50912, 65535, 0, + 6301, 32587, 59361, 65535, 0, 3038, 18640, 46809, + 62852, 65535, 0, 1746, 10524, 32509, 55273, 64278, + 65535, 0, 1234, 6360, 21259, 43712, 59651, 64805, + 65535, 0, 1020, 4461, 14030, 32286, 51249, 61904, + 65100, 65535, 0, 851, 3435, 10006, 23241, 40797, + 55444, 63009, 65252, 65535, 0, 0, 2075, 7137, + 17119, 31499, 46982, 58723, 63976, 65535, 65535, 0, + 0, 0, 3820, 11572, 23038, 37789, 51969, 61243, + 65535, 65535, 65535, 0, 0, 0, 0, 6882, + 16828, 30444, 44844, 57365, 65535, 65535, 65535, 65535, + 0, 0, 0, 0, 0, 10093, 22963, 38779, + 54426, 65535, 65535, 65535, 65535, 65535 +}; + +const SKP_uint16 SKP_Silk_shell_code_table3[ 207 ] = { + 0, 32324, 65535, 0, 15328, 49505, 65535, 0, + 7474, 32344, 57955, 65535, 0, 3944, 19450, 45364, + 61873, 65535, 0, 2338, 11698, 32435, 53915, 63734, + 65535, 0, 1506, 7074, 21778, 42972, 58861, 64590, + 65535, 0, 1027, 4490, 14383, 32264, 50980, 61712, + 65043, 65535, 0, 760, 3022, 9696, 23264, 41465, + 56181, 63253, 65251, 65535, 0, 579, 2256, 6873, + 16661, 31951, 48250, 59403, 64198, 65360, 65535, 0, + 464, 1783, 5181, 12269, 24247, 39877, 53490, 61502, + 64591, 65410, 65535, 0, 366, 1332, 3880, 9273, + 18585, 32014, 45928, 56659, 62616, 64899, 65483, 65535, + 0, 286, 1065, 3089, 6969, 14148, 24859, 38274, + 50715, 59078, 63448, 65091, 65481, 65535, 0, 0, + 482, 2010, 5302, 10408, 18988, 30698, 43634, 54233, + 60828, 64119, 65288, 65535, 65535, 0, 0, 0, + 1006, 3531, 7857, 14832, 24543, 36272, 47547, 56883, + 62327, 64746, 65535, 65535, 65535, 0, 0, 0, + 0, 1863, 4950, 10730, 19284, 29397, 41382, 52335, + 59755, 63834, 65535, 65535, 65535, 65535, 0, 0, + 0, 0, 0, 2513, 7290, 14487, 24275, 35312, + 46240, 55841, 62007, 65535, 65535, 65535, 65535, 65535, + 0, 0, 0, 0, 0, 0, 3606, 9573, + 18764, 28667, 40220, 51290, 59924, 65535, 65535, 65535, + 65535, 65535, 65535, 0, 0, 0, 0, 0, + 0, 0, 4879, 13091, 23376, 36061, 49395, 59315, + 65535, 65535, 65535, 65535, 65535, 65535, 65535 +}; + +const SKP_uint16 SKP_Silk_shell_code_table_offsets[ 19 ] = { + 0, 0, 3, 7, 12, 18, 25, 33, + 42, 52, 63, 75, 88, 102, 117, 133, + + + + + + 150, 168, 187 +}; + + + diff --git a/libs/silk/src/SKP_Silk_tables_sign.c b/libs/silk/src/SKP_Silk_tables_sign.c new file mode 100644 index 0000000000..38e038ada6 --- /dev/null +++ b/libs/silk/src/SKP_Silk_tables_sign.c @@ -0,0 +1,162 @@ + + +/*********************************************************************** + +Copyright (c) 2006-2010, Skype Limited. All rights reserved. +Redistribution and use in source and binary forms, with or without +modification, (subject to the limitations in the disclaimer below) +are permitted provided that the following conditions are met: +- Redistributions of source code must retain the above copyright notice, +this list of conditions and the following disclaimer. +- Redistributions in binary form must reproduce the above copyright +notice, this list of conditions and the following disclaimer in the +documentation and/or other materials provided with the distribution. +- Neither the name of Skype Limited, nor the names of specific +contributors, may be used to endorse or promote products derived from +this software without specific prior written permission. +NO EXPRESS OR IMPLIED LICENSES TO ANY PARTY'S PATENT RIGHTS ARE GRANTED +BY THIS LICENSE.THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND +CONTRIBUTORS ''AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, +BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND +FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE +COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, +INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT +NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF +USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON +ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT +(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE +OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + +***********************************************************************/ + +#include "SKP_Silk_tables.h" + +const SKP_uint16 SKP_Silk_sign_CDF[ 36 ][ 3 ] = +{ +{ + 0, 37840, 65535 +}, +{ + 0, 36944, 65535 +}, +{ + + + + + + 0, 36251, 65535 +}, +{ + 0, 35304, 65535 +}, +{ + 0, 34715, 65535 +}, +{ + 0, 35503, 65535 +}, +{ + 0, 34529, 65535 +}, +{ + 0, 34296, 65535 +}, +{ + 0, 34016, 65535 +}, +{ + 0, 47659, 65535 +}, +{ + 0, 44945, 65535 +}, +{ + 0, 42503, 65535 +}, +{ + 0, 40235, 65535 +}, +{ + 0, 38569, 65535 +}, +{ + 0, 40254, 65535 +}, +{ + 0, 37851, 65535 +}, +{ + 0, 37243, 65535 +}, +{ + 0, 36595, 65535 +}, +{ + + + + + + 0, 43410, 65535 +}, +{ + 0, 44121, 65535 +}, +{ + 0, 43127, 65535 +}, +{ + 0, 40978, 65535 +}, +{ + 0, 38845, 65535 +}, +{ + 0, 40433, 65535 +}, +{ + 0, 38252, 65535 +}, +{ + 0, 37795, 65535 +}, +{ + 0, 36637, 65535 +}, +{ + 0, 59159, 65535 +}, +{ + 0, 55630, 65535 +}, +{ + 0, 51806, 65535 +}, +{ + 0, 48073, 65535 +}, +{ + 0, 45036, 65535 +}, +{ + 0, 48416, 65535 +}, +{ + 0, 43857, 65535 +}, +{ + + + + + + 0, 42678, 65535 +}, +{ + 0, 41146, 65535 +} +}; + + + diff --git a/libs/silk/src/SKP_Silk_tables_type_offset.c b/libs/silk/src/SKP_Silk_tables_type_offset.c new file mode 100644 index 0000000000..f6ad3354e4 --- /dev/null +++ b/libs/silk/src/SKP_Silk_tables_type_offset.c @@ -0,0 +1,61 @@ + + +/*********************************************************************** + +Copyright (c) 2006-2010, Skype Limited. All rights reserved. +Redistribution and use in source and binary forms, with or without +modification, (subject to the limitations in the disclaimer below) +are permitted provided that the following conditions are met: +- Redistributions of source code must retain the above copyright notice, +this list of conditions and the following disclaimer. +- Redistributions in binary form must reproduce the above copyright +notice, this list of conditions and the following disclaimer in the +documentation and/or other materials provided with the distribution. +- Neither the name of Skype Limited, nor the names of specific +contributors, may be used to endorse or promote products derived from +this software without specific prior written permission. +NO EXPRESS OR IMPLIED LICENSES TO ANY PARTY'S PATENT RIGHTS ARE GRANTED +BY THIS LICENSE.THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND +CONTRIBUTORS ''AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, +BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND +FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE +COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, +INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT +NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF +USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON +ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT +(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE +OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + +***********************************************************************/ + +#include "SKP_Silk_tables.h" + +const SKP_uint16 SKP_Silk_type_offset_CDF[ 5 ] = { + 0, 37522, 41030, 44212, 65535 +}; + +const SKP_int SKP_Silk_type_offset_CDF_offset = 2; + + + + + +const SKP_uint16 SKP_Silk_type_offset_joint_CDF[ 4 ][ 5 ] = +{ +{ + 0, 57686, 61230, 62358, 65535 +}, +{ + 0, 18346, 40067, 43659, 65535 +}, +{ + 0, 22694, 24279, 35507, 65535 +}, +{ + 0, 6067, 7215, 13010, 65535 +} +}; + + + diff --git a/libs/silk/test/Decoder.c b/libs/silk/test/Decoder.c new file mode 100644 index 0000000000..b823f0bd57 --- /dev/null +++ b/libs/silk/test/Decoder.c @@ -0,0 +1,408 @@ + + +/*********************************************************************** + +Copyright (c) 2006-2010, Skype Limited. All rights reserved. +Redistribution and use in source and binary forms, with or without +modification, (subject to the limitations in the disclaimer below) +are permitted provided that the following conditions are met: +- Redistributions of source code must retain the above copyright notice, +this list of conditions and the following disclaimer. +- Redistributions in binary form must reproduce the above copyright +notice, this list of conditions and the following disclaimer in the +documentation and/or other materials provided with the distribution. +- Neither the name of Skype Limited, nor the names of specific +contributors, may be used to endorse or promote products derived from +this software without specific prior written permission. +NO EXPRESS OR IMPLIED LICENSES TO ANY PARTY'S PATENT RIGHTS ARE GRANTED +BY THIS LICENSE.THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND + + + + + +CONTRIBUTORS ''AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, +BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND +FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE +COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, +INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT +NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF +USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON +ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT +(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE +OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + +***********************************************************************/ + +/******************************************************/ +/* Silk decoder test program */ +/******************************************************/ + +#ifdef _WIN32 +#define _CRT_SECURE_NO_DEPRECATE 1 +#endif + +#include +#include +#include +#include "SKP_Silk_SDK_API.h" +#include "SKP_Silk_SigProc_FIX.h" + +/* Define codec specific settings should be moved to h file */ +#define MAX_BYTES_PER_FRAME 1024 +#define MAX_INPUT_FRAMES 5 +#define MAX_FRAME_LENGTH 480 +#define MAX_LBRR_DELAY 2 + +static void print_usage(char* argv[]) { + printf( "\nusage: %s in.bit out.pcm [settings]\n", argv[ 0 ] ); + printf( "\nin.bit : Bitstream input to decoder" ); + printf( "\nout.pcm : Speech output from decoder" ); + printf( "\n settings:" ); + printf( "\n-fs : Sampling rate of output signal in kHz; default: 24" ); + printf( "\n-loss : Simulated packet loss percentage (0-100); default: 0" ); + printf( "\n" ); +} + +int main( int argc, char* argv[] ) +{ + size_t counter; + SKP_int args, totPackets, i, k; + SKP_int16 ret, len, tot_len; + + + + + + SKP_int16 nBytes; + SKP_uint8 payload[ MAX_BYTES_PER_FRAME * MAX_INPUT_FRAMES * ( MAX_LBRR_DELAY + 1 ) ]; + SKP_uint8 FECpayload[ MAX_BYTES_PER_FRAME * MAX_INPUT_FRAMES ], *payloadPtr; + SKP_uint8 *payloadEnd = NULL, *payloadToDec = NULL; + SKP_int16 nBytesFEC; + SKP_int16 nBytesPerPacket[ MAX_LBRR_DELAY + 1 ], totBytes; + SKP_int16 out[ ( MAX_FRAME_LENGTH << 1 ) * MAX_INPUT_FRAMES ], *outPtr; + char speechOutFileName[ 150 ], bitInFileName[ 150 ]; + FILE *bitInFile, *speechOutFile; + SKP_int Fs_kHz = 0; + SKP_int32 decSizeBytes; + void *psDec; + float loss_prob; + SKP_int frames, lost, quiet; + SKP_SILK_SDK_DecControlStruct DecControl; + + if( argc < 3 ) { + print_usage( argv ); + exit( 0 ); + } + + /* default settings */ + quiet = 0; + loss_prob = 0.0f; + + /* get arguments */ + args = 1; + strcpy( bitInFileName, argv[ args ] ); + args++; + strcpy( speechOutFileName, argv[ args ] ); + args++; + while( args < argc ) { + if( SKP_STR_CASEINSENSITIVE_COMPARE( argv[ args ], "-loss" ) == 0 ) { + sscanf( argv[ args + 1 ], "%f", &loss_prob ); + args += 2; + } else if( SKP_STR_CASEINSENSITIVE_COMPARE( argv[ args ], "-fs" ) == 0 ) { + sscanf( argv[ args + 1 ], "%d", &Fs_kHz ); + args += 2; + } else if( SKP_STR_CASEINSENSITIVE_COMPARE( argv[ args ], "-quiet" ) == 0 ) { + quiet = 1; + args++; + } else { + printf( "Error: unrecognized setting: %s\n\n", argv[ args ] ); + print_usage( argv ); + exit( 0 ); + } + } + + + + + + + if( !quiet ) { + printf("******************* Silk Decoder v %s ****************\n", SKP_Silk_SDK_get_version()); + printf("******************* Compiled for %d bit cpu ********* \n", (int)sizeof(void*) * 8 ); + printf( "Input: %s\n", bitInFileName ); + printf( "Output: %s\n", speechOutFileName ); + } + + /* Open files */ + bitInFile = fopen( bitInFileName, "rb" ); + if( bitInFile == NULL ) { + printf( "Error: could not open input file %s\n", bitInFileName ); + exit( 0 ); + } + speechOutFile = fopen( speechOutFileName, "wb" ); + if( speechOutFile == NULL ) { + printf( "Error: could not open output file %s\n", speechOutFileName ); + exit( 0 ); + } + + /* Set the samplingrate that is expected for the output */ + if( Fs_kHz == 0 ) { + DecControl.sampleRate = 24000; + } else { + DecControl.sampleRate = Fs_kHz * 1000; + } + + /* Create decoder */ + ret = SKP_Silk_SDK_Get_Decoder_Size( &decSizeBytes ); + if( ret ) { + printf( "\nSKP_Silk_SDK_Get_Decoder_Size returned %d", ret ); + } + psDec = malloc( decSizeBytes ); + + /* Reset decoder */ + ret = SKP_Silk_SDK_InitDecoder( psDec ); + if( ret ) { + printf( "\nSKP_Silk_InitDecoder returned %d", ret ); + } + + totPackets = 0; + payloadEnd = payload; + + /* Simulate the jitter buffer holding MAX_FEC_DELAY packets */ + for( i = 0; i < MAX_LBRR_DELAY; i++ ) { + /* Read payload size */ + counter = fread( &nBytes, sizeof( SKP_int16 ), 1, bitInFile ); + /* Read payload */ + counter = fread( payloadEnd, sizeof( SKP_uint8 ), nBytes, bitInFile ); + + + + + + if( (SKP_int16)counter < nBytes ) { + break; + } + nBytesPerPacket[ i ] = nBytes; + payloadEnd += nBytes; + } + + while( 1 ) { + /* Read payload size */ + counter = fread( &nBytes, sizeof( SKP_int16 ), 1, bitInFile ); + if( nBytes < 0 || counter < 1 ) { + break; + } + + /* Read payload */ + counter = fread( payloadEnd, sizeof( SKP_uint8 ), nBytes, bitInFile ); + if( (SKP_int16)counter < nBytes ) { + break; + } + + /* Simulate losses */ + if( ( (float)rand() / (float)RAND_MAX >= loss_prob / 100 ) && counter > 0 ) { + nBytesPerPacket[ MAX_LBRR_DELAY ] = nBytes; + payloadEnd += nBytes; + } else { + nBytesPerPacket[ MAX_LBRR_DELAY ] = 0; + } + + if( nBytesPerPacket[ 0 ] == 0 ) { + /* Indicate lost packet */ + lost = 1; + + /* Packet loss. Search after FEC in next packets. Should be done in the jitter buffer */ + payloadPtr = payload; + for( i = 0; i < MAX_LBRR_DELAY; i++ ) { + if( nBytesPerPacket[ i + 1 ] > 0 ) { + SKP_Silk_SDK_search_for_LBRR( psDec, payloadPtr, nBytesPerPacket[ i + 1 ], i + 1, FECpayload, &nBytesFEC ); + if( nBytesFEC > 0 ) { + payloadToDec = FECpayload; + nBytes = nBytesFEC; + lost = 0; + break; + } + } + payloadPtr += nBytesPerPacket[ i + 1 ]; + } + } else { + lost = 0; + + + + + + nBytes = nBytesPerPacket[ 0 ]; + payloadToDec = payload; + } + + /* Silk decoder */ + outPtr = out; + tot_len = 0; + + if( lost == 0 ) { + /* No Loss: Decode all frames in the packet */ + frames = 0; + do { + /* Decode 20 ms */ + ret = SKP_Silk_SDK_Decode( psDec, &DecControl, 0, payloadToDec, nBytes, outPtr, &len ); + if( ret ) { + printf( "\nSKP_Silk_SDK_Decode returned %d", ret ); + } + + frames++; + outPtr += len; + tot_len += len; + if( frames > MAX_INPUT_FRAMES ) { + /* Hack for corrupt stream that could generate too many frames */ + outPtr = out; + tot_len = 0; + frames = 0; + } + /* Until last 20 ms frame of packet has been decoded */ + } while( DecControl.internalDecoderFrames ); + } else { + /* Loss: Decode enough frames to cover one packet duration */ + for( i = 0; i < DecControl.framesPerPacket; i++ ) { + /* Generate 20 ms */ + ret = SKP_Silk_SDK_Decode( psDec, &DecControl, 1, payloadToDec, nBytes, outPtr, &len ); + if( ret ) { + printf( "\nSKP_Silk_Decode returned %d", ret ); + } + outPtr += len; + tot_len += len; + } + } + totPackets++; + + /* Write output to file */ + fwrite( out, sizeof( SKP_int16 ), tot_len, speechOutFile ); + + /* Update buffer */ + totBytes = 0; + + + + + + for( i = 0; i < MAX_LBRR_DELAY; i++ ) { + totBytes += nBytesPerPacket[ i + 1 ]; + } + SKP_memmove( payload, &payload[ nBytesPerPacket[ 0 ] ], totBytes * sizeof( SKP_uint8 ) ); + payloadEnd -= nBytesPerPacket[ 0 ]; + SKP_memmove( nBytesPerPacket, &nBytesPerPacket[ 1 ], MAX_LBRR_DELAY * sizeof( SKP_int16 ) ); + + if( !quiet ) { + fprintf( stderr, "\rFrames decoded: %d", totPackets ); + } + } + + /* Empty the recieve buffer */ + for( k = 0; k < MAX_LBRR_DELAY; k++ ) { + if( nBytesPerPacket[ 0 ] == 0 ) { + /* Indicate lost packet */ + lost = 1; + + /* Packet loss. Search after FEC in next packets. Should be done in the jitter buffer */ + payloadPtr = payload; + for( i = 0; i < MAX_LBRR_DELAY; i++ ) { + if( nBytesPerPacket[ i + 1 ] > 0 ) { + SKP_Silk_SDK_search_for_LBRR( psDec, payloadPtr, nBytesPerPacket[ i + 1 ], i + 1, FECpayload, &nBytesFEC ); + if( nBytesFEC > 0 ) { + payloadToDec = FECpayload; + nBytes = nBytesFEC; + lost = 0; + break; + } + } + payloadPtr += nBytesPerPacket[ i + 1 ]; + } + } else { + lost = 0; + nBytes = nBytesPerPacket[ 0 ]; + payloadToDec = payload; + } + + /* Silk decoder */ + outPtr = out; + tot_len = 0; + + if( lost == 0 ) { + /* No loss: Decode all frames in the packet */ + frames = 0; + do { + /* Decode 20 ms */ + ret = SKP_Silk_SDK_Decode( psDec, &DecControl, 0, payloadToDec, nBytes, outPtr, &len ); + + + + + + if( ret ) { + printf( "\nSKP_Silk_SDK_Decode returned %d", ret ); + } + + frames++; + outPtr += len; + tot_len += len; + if( frames > MAX_INPUT_FRAMES ) { + /* Hack for corrupt stream that could generate too many frames */ + outPtr = out; + tot_len = 0; + frames = 0; + } + /* Until last 20 ms frame of packet has been decoded */ + } while( DecControl.internalDecoderFrames ); + } else { + /* Loss: Decode enough frames to cover one packet duration */ + + /* Generate 20 ms */ + for( i = 0; i < DecControl.framesPerPacket; i++ ) { + ret = SKP_Silk_SDK_Decode( psDec, &DecControl, 1, payloadToDec, nBytes, outPtr, &len ); + if( ret ) { + printf( "\nSKP_Silk_Decode returned %d", ret ); + } + outPtr += len; + tot_len += len; + } + } + totPackets++; + + /* Write output to file */ + fwrite( out, sizeof( SKP_int16 ), tot_len, speechOutFile ); + + /* Update Buffer */ + totBytes = 0; + for( i = 0; i < MAX_LBRR_DELAY; i++ ) { + totBytes += nBytesPerPacket[ i + 1 ]; + } + SKP_memmove( payload, &payload[ nBytesPerPacket[ 0 ] ], totBytes * sizeof( SKP_uint8 ) ); + payloadEnd -= nBytesPerPacket[ 0 ]; + SKP_memmove( nBytesPerPacket, &nBytesPerPacket[ 1 ], MAX_LBRR_DELAY * sizeof( SKP_int16 ) ); + + if( !quiet ) { + fprintf( stderr, "\rPackets decoded: %d", totPackets ); + } + } + + if( !quiet ) { + + + + + + printf( "\nDecoding Finished \n" ); + } + + /* Free decoder */ + free( psDec ); + + /* Close files */ + fclose( speechOutFile ); + fclose( bitInFile ); + + return 0; +} + + diff --git a/libs/silk/test/Encoder.c b/libs/silk/test/Encoder.c new file mode 100644 index 0000000000..a1dccc03ec --- /dev/null +++ b/libs/silk/test/Encoder.c @@ -0,0 +1,354 @@ + + +/*********************************************************************** + +Copyright (c) 2006-2010, Skype Limited. All rights reserved. +Redistribution and use in source and binary forms, with or without +modification, (subject to the limitations in the disclaimer below) +are permitted provided that the following conditions are met: +- Redistributions of source code must retain the above copyright notice, +this list of conditions and the following disclaimer. +- Redistributions in binary form must reproduce the above copyright +notice, this list of conditions and the following disclaimer in the +documentation and/or other materials provided with the distribution. +- Neither the name of Skype Limited, nor the names of specific +contributors, may be used to endorse or promote products derived from +this software without specific prior written permission. +NO EXPRESS OR IMPLIED LICENSES TO ANY PARTY'S PATENT RIGHTS ARE GRANTED +BY THIS LICENSE.THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND +CONTRIBUTORS ''AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, +BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND +FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE +COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, +INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT +NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF +USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON +ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT +(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE +OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + +***********************************************************************/ + +/******************************************************/ +/* Silk encoder test program */ + + + + + +/******************************************************/ + +#ifdef _WIN32 +#define _CRT_SECURE_NO_DEPRECATE 1 +#endif + +#include +#include +#include +#include +#include "SKP_Silk_SDK_API.h" + +/* Define codec specific settings */ +#define MAX_BYTES_PER_FRAME 250 // Equals peak bitrate of 100 kbps +#define MAX_INPUT_FRAMES 5 +#define MAX_LBRR_DELAY 2 +#define MAX_FRAME_LENGTH 480 + +static void print_usage( char* argv[] ) { + printf( "\nusage: %s in.pcm out.bit [settings]\n", argv[ 0 ] ); + printf( "\nin.pcm : Speech input to encoder" ); + printf( "\nout.bit : Bitstream output from encoder" ); + printf( "\n settings:" ); + printf( "\n-fs : Sampling rate in kHz, default: 24" ); + printf( "\n-packetlength : Packet interval in ms, default: 20" ); + printf( "\n-rate : Target bitrate; default: 25000" ); + printf( "\n-loss : Uplink loss estimate, in percent (0-100); default: 0" ); + printf( "\n-inbandFEC : Enable inband FEC usage (0/1); default: 0" ); + printf( "\n-complexity : Set complexity, 0: low, 1: medium, 2: high; default: 2" ); + printf( "\n-DTX : Enable DTX (0/1); default: 0" ); + printf( "\n-quiet : Print only some basic values" ); + printf( "\n"); +} + +int main( int argc, char* argv[] ) +{ + size_t counter; + SKP_int k, args, totPackets, totActPackets, ret; + SKP_int16 nBytes; + double sumBytes, sumWBytes, sumActBytes, avg_rate, act_rate, wght_rate, nrg; + SKP_uint8 payload[ MAX_BYTES_PER_FRAME * MAX_INPUT_FRAMES ]; + SKP_int16 in[ MAX_FRAME_LENGTH * MAX_INPUT_FRAMES ]; + char speechInFileName[ 150 ], bitOutFileName[ 150 ]; + FILE *bitOutFile, *speechInFile; + SKP_int32 encSizeBytes; + void *psEnc; + + /* default settings */ + + + + + + SKP_int fs_kHz = 24; + SKP_int targetRate_bps = 25000; + SKP_int packetSize_ms = 20; + SKP_int frameSizeReadFromFile_ms = 20; + SKP_int packetLoss_perc = 0, complexity_mode = 2, smplsSinceLastPacket; + SKP_int INBandFec_enabled = 0, DTX_enabled = 0, quiet = 0; + SKP_SILK_SDK_EncControlStruct encControl; // Struct for input to encoder + + if( argc < 3) { + print_usage( argv ); + exit( 0 ); + } + + /* get arguments */ + args = 1; + strcpy( speechInFileName, argv[ args ] ); + args++; + strcpy( bitOutFileName, argv[ args ] ); + args++; + while( args < argc ) { + if( SKP_STR_CASEINSENSITIVE_COMPARE( argv[ args ], "-fs" ) == 0 ) { + sscanf( argv[ args + 1 ], "%d", &fs_kHz ); + args += 2; + } else if( SKP_STR_CASEINSENSITIVE_COMPARE( argv[ args ], "-packetlength" ) == 0 ) { + sscanf( argv[ args + 1 ], "%d", &packetSize_ms ); + args += 2; + } else if( SKP_STR_CASEINSENSITIVE_COMPARE( argv[ args ], "-rate" ) == 0 ) { + sscanf( argv[ args + 1 ], "%d", &targetRate_bps ); + args += 2; + } else if( SKP_STR_CASEINSENSITIVE_COMPARE( argv[ args ], "-loss" ) == 0 ) { + sscanf( argv[ args + 1 ], "%d", &packetLoss_perc ); + args += 2; + } else if( SKP_STR_CASEINSENSITIVE_COMPARE( argv[ args ], "-complexity" ) == 0 ) { + sscanf( argv[ args + 1 ], "%d", &complexity_mode ); + args += 2; + } else if( SKP_STR_CASEINSENSITIVE_COMPARE( argv[ args ], "-inbandFEC" ) == 0 ) { + sscanf( argv[ args + 1 ], "%d", &INBandFec_enabled ); + args += 2; + } else if( SKP_STR_CASEINSENSITIVE_COMPARE( argv[ args ], "-DTX") == 0 ) { + sscanf( argv[ args + 1 ], "%d", &DTX_enabled ); + args += 2; + } else if( SKP_STR_CASEINSENSITIVE_COMPARE( argv[ args ], "-quiet" ) == 0 ) { + quiet = 1; + args++; + } else { + printf( "Error: unrecognized setting: %s\n\n", argv[ args ] ); + print_usage( argv ); + exit( 0 ); + + + + + + } + } + + /* Print options */ + if( !quiet ) { + printf("******************* Silk Encoder v %s ****************\n", SKP_Silk_SDK_get_version()); + printf("******************* Compiled for %d bit cpu ********* \n", (int)sizeof(void*) * 8 ); + printf( "Input: %s\n", speechInFileName ); + printf( "Output: %s\n", bitOutFileName ); + printf( "Sampling rate: %d kHz\n", fs_kHz); + printf( "Packet interval: %d ms\n", packetSize_ms); + printf( "Inband FEC used: %d\n", INBandFec_enabled); + printf( "DTX used: %d\n", DTX_enabled); + printf( "Complexity: %d\n", complexity_mode); + printf( "Target bitrate: %d bps\n", targetRate_bps); + } + + /* Open files */ + speechInFile = fopen( speechInFileName, "rb" ); + if( speechInFile == NULL ) { + printf( "Error: could not open input file %s\n", speechInFileName ); + exit( 0 ); + } + bitOutFile = fopen( bitOutFileName, "wb" ); + if( bitOutFile == NULL ) { + printf( "Error: could not open output file %s\n", bitOutFileName ); + exit( 0 ); + } + + /* Create Encoder */ + ret = SKP_Silk_SDK_Get_Encoder_Size( &encSizeBytes ); + if( ret ) { + printf( "\nSKP_Silk_create_encoder returned %d", ret ); + } + + psEnc = malloc( encSizeBytes ); + + /* Reset Encoder */ + ret = SKP_Silk_SDK_InitEncoder( psEnc, &encControl ); + if( ret ) { + printf( "\nSKP_Silk_reset_encoder returned %d", ret ); + } + + /* Set Encoder parameters */ + encControl.sampleRate = fs_kHz * 1000; + encControl.packetSize = packetSize_ms * fs_kHz; + encControl.packetLossPercentage = packetLoss_perc; + encControl.useInBandFec = INBandFec_enabled; + + + + + + encControl.useDtx = DTX_enabled; + encControl.complexity = complexity_mode; + encControl.bitRate = targetRate_bps; + + if( fs_kHz > 24 || fs_kHz < 0 ) { + printf( "\nError: Sampling rate = %d out of range, valid range 8 - 24 \n \n", fs_kHz ); + exit( 0 ); + } + + totPackets = 0; + totActPackets = 0; + smplsSinceLastPacket = 0; + sumBytes = 0.0; + sumActBytes = 0.0; + sumWBytes = 0.0; + + while( 1 ) { + /* Read input to file */ + counter = fread( in, sizeof( SKP_int16 ), frameSizeReadFromFile_ms * fs_kHz, speechInFile ); + if( (SKP_int)counter < frameSizeReadFromFile_ms * fs_kHz ) { + break; + } + + /* max payload size */ + nBytes = MAX_BYTES_PER_FRAME * MAX_INPUT_FRAMES; + + /* Silk Encoder */ + ret = SKP_Silk_SDK_Encode( psEnc, &encControl, in, (SKP_int16)counter, payload, &nBytes ); + if( ret ) { + printf( "\nSKP_Silk_Encode returned %d", ret ); + break; + } + + /* Get packet size */ + packetSize_ms = (SKP_int)( 1000 * encControl.packetSize ) / encControl.sampleRate; + + smplsSinceLastPacket += (SKP_int)counter; + + if( ( smplsSinceLastPacket / fs_kHz ) == packetSize_ms ) { + /* Sends a dummy zero size packet in case of DTX period */ + /* to make it work with the decoder test program. */ + /* In practice should be handled by RTP sequence numbers */ + totPackets++; + sumBytes += nBytes; + sumWBytes += pow( nBytes, 10.0 ); + nrg = 0.0; + for( k = 0; k < (SKP_int)counter; k++ ) { + nrg += in[ k ] * (double)in[ k ]; + + + + + + } + if( ( nrg / (SKP_int)counter ) > 1e3 ) { + sumActBytes += nBytes; + totActPackets++; + } + + /* Write payload size */ + fwrite( &nBytes, sizeof( SKP_int16 ), 1, bitOutFile ); + + /* Write payload */ + fwrite( payload, sizeof( SKP_uint8 ), nBytes, bitOutFile ); + + if( !quiet ) { + fprintf( stderr, "\rPackets encoded: %d", totPackets ); + } + smplsSinceLastPacket = 0; + } + } + + /* Write dummy because it can not end with 0 bytes */ + nBytes = -1; + + /* Write payload size */ + fwrite( &nBytes, sizeof( SKP_int16 ), 1, bitOutFile ); + + /* Query encoder */ + packetSize_ms = (SKP_int)( 1000 * encControl.packetSize ) / encControl.sampleRate; + + /* Free Encoder */ + free( psEnc ); + + fclose( speechInFile ); + fclose( bitOutFile ); + + avg_rate = 8.0 / packetSize_ms * sumBytes / totPackets; + act_rate = 8.0 / packetSize_ms * sumActBytes / totActPackets; + wght_rate = 8.0 / packetSize_ms * pow( sumWBytes / totPackets, 0.1 ); + if( !quiet ) { + printf( "\nAverage bitrate: %.3f kbps", avg_rate ); + printf( "\nActive bitrate: %.3f kbps", act_rate ); + printf( "\nWeighted bitrate: %.3f kbps", wght_rate ); + printf( "\n\n" ); + } else { + /* print average and weighted bitrates */ + printf( "%.3f %.3f %.3f \n", avg_rate, act_rate, wght_rate ); + } + return 0; +} + + + + + +Authors' Addresses + + Koen Vos + Skype Technologies S.A. + Stadsgaarden 6 + Stockholm 11645 + SE + + Phone: +46 855 921 989 + Email: koen.vos@skype.net + + + Soeren Skak Jensen + Skype Technologies S.A. + Stadsgaarden 6 + Stockholm 11645 + SE + + Phone: +46 855 921 989 + Email: soren.skak.jensen@skype.net + + + Karsten Vandborg Soerensen + Skype Technologies S.A. + Stadsgaarden 6 + Stockholm 11645 + SE + + Phone: +46 855 921 989 + Email: karsten.vandborg.sorensen@skype.net + + + + + + + + + + + + + + + + + + + + +