52 lines
2.2 KiB
C
52 lines
2.2 KiB
C
/*
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* g722_1 - a library for the G.722.1 and Annex C codecs
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*
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* tables.h
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*
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* Adapted by Steve Underwood <steveu@coppice.org> from the reference
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* code supplied with ITU G.722.1, which is:
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*
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* (C) 2004 Polycom, Inc.
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* All rights reserved.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
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*/
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#define REGION_POWER_TABLE_SIZE 64
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#define NUM_CATEGORIES 8
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extern const int16_t vector_dimension[NUM_CATEGORIES];
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extern const int16_t number_of_vectors[NUM_CATEGORIES];
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/* The last category isn't really coded with scalar quantization. */
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extern const int16_t max_bin[NUM_CATEGORIES];
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extern const int16_t max_bin_plus_one_inverse[NUM_CATEGORIES];
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#if defined(G722_1_USE_FIXED_POINT)
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extern const int16_t int_region_standard_deviation_table[REGION_POWER_TABLE_SIZE];
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extern const int16_t standard_deviation_inverse_table[REGION_POWER_TABLE_SIZE];
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extern const int16_t step_size_inverse_table[NUM_CATEGORIES];
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extern const int16_t int_dead_zone[NUM_CATEGORIES];
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extern const int16_t int_dead_zone_low_bits[NUM_CATEGORIES];
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extern const int16_t samples_to_rmlt_window[DCT_LENGTH];
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extern const int16_t max_samples_to_rmlt_window[MAX_DCT_LENGTH];
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extern const int16_t rmlt_to_samples_window[DCT_LENGTH];
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extern const int16_t max_rmlt_to_samples_window[MAX_DCT_LENGTH];
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#else
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extern const float region_standard_deviation_table[REGION_POWER_TABLE_SIZE];
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extern const float standard_deviation_inverse_table[REGION_POWER_TABLE_SIZE];
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extern const float step_size_inverse_table[NUM_CATEGORIES];
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extern const float dead_zone[NUM_CATEGORIES];
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extern const float samples_to_rmlt_window[DCT_LENGTH];
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extern const float max_samples_to_rmlt_window[MAX_DCT_LENGTH];
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extern const float rmlt_to_samples_window[DCT_LENGTH];
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extern const float max_rmlt_to_samples_window[MAX_DCT_LENGTH];
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extern const float step_size[NUM_CATEGORIES];
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extern const float region_power_table[REGION_POWER_TABLE_SIZE];
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extern const float region_power_table_boundary[REGION_POWER_TABLE_SIZE - 1];
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#endif
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/*- End of file ------------------------------------------------------------*/
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