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add support for BroadVoice16 and BroadVoice32 codecs 

git-svn-id: http://svn.freeswitch.org/svn/freeswitch/trunk@15464 d0543943-73ff-0310-b7d9-9358b9ac24b2
This commit is contained in:
Brian West 2009-11-13 22:11:41 +00:00
parent 5dfcff4303
commit 77a2346071
4 changed files with 390 additions and 0 deletions
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20
src/mod/codecs/mod_bv16/Makefile Normal file
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BASE=../../../..
BV16=libbv16-0.1
BV16_DIR=$(BASE)/libs/$(BV16)
LOCAL_CFLAGS=-I$(BV16_DIR)/bv16 -I$(BV16_DIR)/bvcommon
BV16_LA=$(BV16_DIR)/.libs/libbv16.la
LOCAL_LIBADD=$(BV16_LA)
include $(BASE)/build/modmake.rules
$(BV16_DIR):
$(GETLIB) $(BV16).tar.gz
$(BV16_DIR)/Makefile: $(BV16_DIR)
cd $(BV16_DIR) && CFLAGS=$(AM_CFLAGS) ./configure --disable-shared --with-pic
$(BV16_LA): $(BV16_DIR)/Makefile
cd $(BV16_DIR) && $(MAKE)
$(TOUCH_TARGET)

175
src/mod/codecs/mod_bv16/mod_bv16.c Normal file
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/*
* FreeSWITCH Modular Media Switching Software Library / Soft-Switch Application
* Copyright (C) 2005-2009, Anthony Minessale II <anthm@freeswitch.org>
*
* Version: MPL 1.1
*
* The contents of this file are subject to the Mozilla Public License Version
* 1.1 (the "License"); you may not use this file except in compliance with
* the License. You may obtain a copy of the License at
* http://www.mozilla.org/MPL/
*
* Software distributed under the License is distributed on an "AS IS" basis,
* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
* for the specific language governing rights and limitations under the
* License.
*
* The Original Code is FreeSWITCH Modular Media Switching Software Library / Soft-Switch Application
*
* The Initial Developer of the Original Code is
* Anthony Minessale II <anthm@freeswitch.org>
* Portions created by the Initial Developer are Copyright (C)
* the Initial Developer. All Rights Reserved.
*
* Contributor(s):
*
* Brian K. West <brian@freeswitch.org>
*
* mod_bv16.c -- BroadVoice32 (BV16) audio codec (http://www.broadcom.com/support/broadvoice/)
*
*/
#include "switch.h"
#include "bv16.h"
#include "bitpack.h"
SWITCH_MODULE_LOAD_FUNCTION(mod_bv16_load);
SWITCH_MODULE_DEFINITION(mod_bv16, mod_bv16_load, NULL, NULL);
#define FRAME_SIZE 40
#define CODE_SIZE 5
struct bv16_context {
struct BV16_Encoder_State cs;
struct BV16_Decoder_State ds;
struct BV16_Bit_Stream ebs;
struct BV16_Bit_Stream dbs;
};
static switch_status_t switch_bv16_init(switch_codec_t *codec, switch_codec_flag_t flags, const switch_codec_settings_t *codec_settings)
{
struct bv16_context *context = NULL;
int encoding = (flags & SWITCH_CODEC_FLAG_ENCODE);
int decoding = (flags & SWITCH_CODEC_FLAG_DECODE);
if (!(encoding || decoding) || (!(context = switch_core_alloc(codec->memory_pool, sizeof(*context))))) {
return SWITCH_STATUS_FALSE;
}
if (encoding) {
Reset_BV16_Encoder(&context->cs);
}
if (decoding) {
Reset_BV16_Decoder(&context->ds);
}
codec->private_info = context;
return SWITCH_STATUS_SUCCESS;
}
static switch_status_t switch_bv16_destroy(switch_codec_t *codec)
{
codec->private_info = NULL;
return SWITCH_STATUS_SUCCESS;
}
static switch_status_t switch_bv16_encode(switch_codec_t *codec,
switch_codec_t *other_codec,
void *decoded_data,
uint32_t decoded_data_len,
uint32_t decoded_rate, void *encoded_data, uint32_t *encoded_data_len, uint32_t *encoded_rate,
unsigned int *flag)
{
struct bv16_context *context = codec->private_info;
int16_t *cur_frame = decoded_data;
uint16_t *target = encoded_data;
int i, frames = decoded_data_len / (FRAME_SIZE * 2);
if (!context) {
return SWITCH_STATUS_FALSE;
}
*encoded_data_len = 0;
for (i = 0; i < frames; i++) {
BV16_Encode(&context->ebs, &context->cs, cur_frame);
BV16_BitPack(target, &context->ebs);
*encoded_data_len += CODE_SIZE * 2;
cur_frame += FRAME_SIZE;
target += CODE_SIZE;
}
return SWITCH_STATUS_SUCCESS;
}
static switch_status_t switch_bv16_decode(switch_codec_t *codec,
switch_codec_t *other_codec,
void *encoded_data,
uint32_t encoded_data_len,
uint32_t encoded_rate, void *decoded_data, uint32_t *decoded_data_len, uint32_t *decoded_rate,
unsigned int *flag)
{
struct bv16_context *context = codec->private_info;
uint16_t *cur_frame = encoded_data;
int16_t *target = decoded_data;
int i, frames = encoded_data_len / (CODE_SIZE * 2);
if (!context) {
return SWITCH_STATUS_FALSE;
}
*decoded_data_len = 0;
for (i = 0; i < frames; i++) {
BV16_BitUnPack(cur_frame, &context->dbs);
BV16_Decode(&context->dbs, &context->ds, target);
cur_frame += CODE_SIZE;
target += FRAME_SIZE;
*decoded_data_len += FRAME_SIZE * 2;
}
return SWITCH_STATUS_SUCCESS;
}
SWITCH_MODULE_LOAD_FUNCTION(mod_bv16_load)
{
switch_codec_interface_t *codec_interface;
/* connect my internal structure to the blank pointer passed to me */
*module_interface = switch_loadable_module_create_module_interface(pool, modname);
SWITCH_ADD_CODEC(codec_interface, "BroadVoice16 (BV16)");
switch_core_codec_add_implementation(pool,
codec_interface,
SWITCH_CODEC_TYPE_AUDIO, /* enumeration defining the type of the codec */
126, /* the IANA code number */
"BV16", /* the IANA code name */
NULL, /* default fmtp to send (can be overridden by the init function) */
8000, /* samples transferred per second */
8000, /* actual samples transferred per second */
16000, /* bits transferred per second */
20000, /* number of microseconds per frame */
160, /* number of samples per frame */
320, /* number of bytes per frame decompressed */
40, /* number of bytes per frame compressed */
1, /* number of channels represented */
1, /* number of frames per network packet */
switch_bv16_init, /* function to initialize a codec handle using this implementation */
switch_bv16_encode, /* function to encode raw data into encoded data */
switch_bv16_decode, /* function to decode encoded data into raw data */
switch_bv16_destroy); /* deinitalize a codec handle using this implementation */
/* indicate that the module should continue to be loaded */
return SWITCH_STATUS_SUCCESS;
}
/* For Emacs:
* Local Variables:
* mode:c
* indent-tabs-mode:t
* tab-width:4
* c-basic-offset:4
* End:
* For VIM:
* vim:set softtabstop=4 shiftwidth=4 tabstop=4:
*/

20
src/mod/codecs/mod_bv32/Makefile Normal file
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BASE=../../../..
BV32=libbv32-0.1
BV32_DIR=$(BASE)/libs/$(BV32)
LOCAL_CFLAGS=-I$(BV32_DIR)/bv32 -I$(BV32_DIR)/bvcommon
BV32_LA=$(BV32_DIR)/.libs/libbv32.la
LOCAL_LIBADD=$(BV32_LA)
include $(BASE)/build/modmake.rules
$(BV32_DIR):
$(GETLIB) $(BV32).tar.gz
$(BV32_DIR)/Makefile: $(BV32_DIR)
cd $(BV32_DIR) && CFLAGS=$(AM_CFLAGS) ./configure --disable-shared --with-pic
$(BV32_LA): $(BV32_DIR)/Makefile
cd $(BV32_DIR) && $(MAKE)
$(TOUCH_TARGET)

175
src/mod/codecs/mod_bv32/mod_bv32.c Normal file
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/*
* FreeSWITCH Modular Media Switching Software Library / Soft-Switch Application
* Copyright (C) 2005-2009, Anthony Minessale II <anthm@freeswitch.org>
*
* Version: MPL 1.1
*
* The contents of this file are subject to the Mozilla Public License Version
* 1.1 (the "License"); you may not use this file except in compliance with
* the License. You may obtain a copy of the License at
* http://www.mozilla.org/MPL/
*
* Software distributed under the License is distributed on an "AS IS" basis,
* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
* for the specific language governing rights and limitations under the
* License.
*
* The Original Code is FreeSWITCH Modular Media Switching Software Library / Soft-Switch Application
*
* The Initial Developer of the Original Code is
* Anthony Minessale II <anthm@freeswitch.org>
* Portions created by the Initial Developer are Copyright (C)
* the Initial Developer. All Rights Reserved.
*
* Contributor(s):
*
* Brian K. West <brian@freeswitch.org>
*
* mod_bv32.c -- BroadVoice32 (BV32) audio codec (http://www.broadcom.com/support/broadvoice/)
*
*/
#include "switch.h"
#include "bv32.h"
#include "bitpack.h"
SWITCH_MODULE_LOAD_FUNCTION(mod_bv32_load);
SWITCH_MODULE_DEFINITION(mod_bv32, mod_bv32_load, NULL, NULL);
#define FRAME_SIZE 80
#define CODE_SIZE 10
struct bv32_context {
struct BV32_Encoder_State cs;
struct BV32_Decoder_State ds;
struct BV32_Bit_Stream ebs;
struct BV32_Bit_Stream dbs;
};
static switch_status_t switch_bv32_init(switch_codec_t *codec, switch_codec_flag_t flags, const switch_codec_settings_t *codec_settings)
{
struct bv32_context *context = NULL;
int encoding = (flags & SWITCH_CODEC_FLAG_ENCODE);
int decoding = (flags & SWITCH_CODEC_FLAG_DECODE);
if (!(encoding || decoding) || (!(context = switch_core_alloc(codec->memory_pool, sizeof(*context))))) {
return SWITCH_STATUS_FALSE;
}
if (encoding) {
Reset_BV32_Coder(&context->cs);
}
if (decoding) {
Reset_BV32_Decoder(&context->ds);
}
codec->private_info = context;
return SWITCH_STATUS_SUCCESS;
}
static switch_status_t switch_bv32_destroy(switch_codec_t *codec)
{
codec->private_info = NULL;
return SWITCH_STATUS_SUCCESS;
}
static switch_status_t switch_bv32_encode(switch_codec_t *codec,
switch_codec_t *other_codec,
void *decoded_data,
uint32_t decoded_data_len,
uint32_t decoded_rate, void *encoded_data, uint32_t *encoded_data_len, uint32_t *encoded_rate,
unsigned int *flag)
{
struct bv32_context *context = codec->private_info;
int16_t *cur_frame = decoded_data;
uint16_t *target = encoded_data;
int i, frames = decoded_data_len / (FRAME_SIZE * 2);
if (!context) {
return SWITCH_STATUS_FALSE;
}
*encoded_data_len = 0;
for (i = 0; i < frames; i++) {
BV32_Encode(&context->ebs, &context->cs, cur_frame);
BV32_BitPack(target, &context->ebs);
*encoded_data_len += CODE_SIZE * 2;
cur_frame += FRAME_SIZE;
target += CODE_SIZE;
}
return SWITCH_STATUS_SUCCESS;
}
static switch_status_t switch_bv32_decode(switch_codec_t *codec,
switch_codec_t *other_codec,
void *encoded_data,
uint32_t encoded_data_len,
uint32_t encoded_rate, void *decoded_data, uint32_t *decoded_data_len, uint32_t *decoded_rate,
unsigned int *flag)
{
struct bv32_context *context = codec->private_info;
uint16_t *cur_frame = encoded_data;
int16_t *target = decoded_data;
int i, frames = encoded_data_len / (CODE_SIZE * 2);
if (!context) {
return SWITCH_STATUS_FALSE;
}
*decoded_data_len = 0;
for (i = 0; i < frames; i++) {
BV32_BitUnPack(cur_frame, &context->dbs);
BV32_Decode(&context->dbs, &context->ds, target);
cur_frame += CODE_SIZE;
target += FRAME_SIZE;
*decoded_data_len += FRAME_SIZE * 2;
}
return SWITCH_STATUS_SUCCESS;
}
SWITCH_MODULE_LOAD_FUNCTION(mod_bv32_load)
{
switch_codec_interface_t *codec_interface;
/* connect my internal structure to the blank pointer passed to me */
*module_interface = switch_loadable_module_create_module_interface(pool, modname);
SWITCH_ADD_CODEC(codec_interface, "BroadVoice32 (BV32)");
switch_core_codec_add_implementation(pool,
codec_interface,
SWITCH_CODEC_TYPE_AUDIO, /* enumeration defining the type of the codec */
127, /* the IANA code number */
"BV32", /* the IANA code name */
NULL, /* default fmtp to send (can be overridden by the init function) */
16000, /* samples transferred per second */
16000, /* actual samples transferred per second */
32000, /* bits transferred per second */
20000, /* number of microseconds per frame */
320, /* number of samples per frame */
640, /* number of bytes per frame decompressed */
80, /* number of bytes per frame compressed */
1, /* number of channels represented */
1, /* number of frames per network packet */
switch_bv32_init, /* function to initialize a codec handle using this implementation */
switch_bv32_encode, /* function to encode raw data into encoded data */
switch_bv32_decode, /* function to decode encoded data into raw data */
switch_bv32_destroy); /* deinitalize a codec handle using this implementation */
/* indicate that the module should continue to be loaded */
return SWITCH_STATUS_SUCCESS;
}
/* For Emacs:
* Local Variables:
* mode:c
* indent-tabs-mode:t
* tab-width:4
* c-basic-offset:4
* End:
* For VIM:
* vim:set softtabstop=4 shiftwidth=4 tabstop=4:
*/