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freeswitch/src/mod/codecs/mod_voipcodecs/mod_voipcodecs.c

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Adding mod_voipcodecs using Steve Underwoods voipcodecs library. This isn't default yet. /b git-svn-id: http://svn.freeswitch.org/svn/freeswitch/trunk@7555 d0543943-73ff-0310-b7d9-9358b9ac24b2
2008-02-08 17:13:54 +00:00
/*
* FreeSWITCH Modular Media Switching Software Library / Soft-Switch Application
* Copyright (C) 2005/2006, Anthony Minessale II <anthmct@yahoo.com>
*
* 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 / G722 codec module
*
* The Initial Developer of the Original Code is
* Brian K. West <brian.west@mac.com>
* Portions created by the Initial Developer are Copyright (C)
* the Initial Developer. All Rights Reserved.
*
* Contributor(s):
* Brian K. West <brian.west@mac.com>
* Anthony Minessale II <anthmct@yahoo.com>
* Michael Jerris <mike@jerris.com>
*
* mod_voipcodecs.c -- VoIP Codecs (G.711, G.722, G.726, GSM-FR, IMA_ADPCM, LPC10)
*
* This module wouldn't be possible without generous contributions from Steve Underwood. Thanks!
*
*/
#include <switch.h>
#include "voipcodecs.h"
SWITCH_MODULE_LOAD_FUNCTION(mod_voipcodecs_load);
SWITCH_MODULE_DEFINITION(mod_voipcodecs, mod_voipcodecs_load, NULL, NULL);
/* LPC10 - START */
struct lpc10_context {
lpc10_encode_state_t encoder_object;
lpc10_decode_state_t decoder_object;
};
static switch_status_t switch_lpc10_init(switch_codec_t *codec, switch_codec_flag_t flags, const switch_codec_settings_t *codec_settings)
{
uint32_t encoding, decoding;
struct lpc10_context *context = NULL;
encoding = (flags & SWITCH_CODEC_FLAG_ENCODE);
decoding = (flags & SWITCH_CODEC_FLAG_DECODE);
if (!(encoding || decoding) || (!(context = switch_core_alloc(codec->memory_pool, sizeof(struct lpc10_context))))) {
return SWITCH_STATUS_FALSE;
} else {
if (encoding) {
lpc10_encode_init(&context->encoder_object, TRUE);
}
if (decoding) {
lpc10_decode_init(&context->decoder_object, TRUE);
}
codec->private_info = context;
return SWITCH_STATUS_SUCCESS;
}
}
static switch_status_t switch_lpc10_destroy(switch_codec_t *codec)
{
codec->private_info = NULL;
return SWITCH_STATUS_SUCCESS;
}
static switch_status_t switch_lpc10_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 lpc10_context *context = codec->private_info;
if (!context) {
return SWITCH_STATUS_FALSE;
}
*encoded_data_len = lpc10_encode(&context->encoder_object, (uint8_t *) encoded_data, (int16_t *) decoded_data, decoded_data_len / 360);
return SWITCH_STATUS_SUCCESS;
}
static switch_status_t switch_lpc10_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 lpc10_context *context = codec->private_info;
if (!context) {
return SWITCH_STATUS_FALSE;
}
*decoded_data_len = (2 * lpc10_decode(&context->decoder_object, (int16_t *) decoded_data, (uint8_t *) encoded_data, encoded_data_len / 7));
return SWITCH_STATUS_SUCCESS;
}
/* LPC10 - END */
/* GSM - START */
struct gsm_context {
gsm0610_state_t decoder_object;
gsm0610_state_t encoder_object;
};
static switch_status_t switch_gsm_init(switch_codec_t *codec, switch_codec_flag_t flags, const switch_codec_settings_t *codec_settings)
{
uint32_t encoding, decoding;
struct gsm_context *context = NULL;
encoding = (flags & SWITCH_CODEC_FLAG_ENCODE);
decoding = (flags & SWITCH_CODEC_FLAG_DECODE);
if (!(encoding || decoding) || (!(context = switch_core_alloc(codec->memory_pool, sizeof(*context))))) {
return SWITCH_STATUS_FALSE;
} else {
if (encoding) {
gsm0610_init(&context->encoder_object, GSM0610_PACKING_VOIP);
}
if (decoding) {
gsm0610_init(&context->decoder_object, GSM0610_PACKING_VOIP);
}
codec->private_info = context;
return SWITCH_STATUS_SUCCESS;
}
}
static switch_status_t switch_gsm_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 gsm_context *context = codec->private_info;
if (!context) {
return SWITCH_STATUS_FALSE;
}
*encoded_data_len = gsm0610_encode(&context->encoder_object, (uint8_t *) encoded_data, (int16_t *) decoded_data, decoded_data_len / 2);
return SWITCH_STATUS_SUCCESS;
}
static switch_status_t switch_gsm_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 gsm_context *context = codec->private_info;
if (!context) {
return SWITCH_STATUS_FALSE;
}
*decoded_data_len = (2 * gsm0610_decode(&context->decoder_object, (int16_t *) decoded_data, (uint8_t *) encoded_data, encoded_data_len));
return SWITCH_STATUS_SUCCESS;
}
static switch_status_t switch_gsm_destroy(switch_codec_t *codec)
{
/* We do not need to use release here as the pool memory is taken care of for us */
codec->private_info = NULL;
return SWITCH_STATUS_SUCCESS;
}
/* GSM - END */
/* G711 - START */
static switch_status_t switch_g711u_init(switch_codec_t *codec, switch_codec_flag_t flags, const switch_codec_settings_t *codec_settings)
{
uint32_t encoding, decoding;
encoding = (flags & SWITCH_CODEC_FLAG_ENCODE);
decoding = (flags & SWITCH_CODEC_FLAG_DECODE);
if (!(encoding || decoding)) {
return SWITCH_STATUS_FALSE;
} else {
return SWITCH_STATUS_SUCCESS;
}
}
static switch_status_t switch_g711u_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)
{
short *dbuf;
unsigned char *ebuf;
uint32_t i;
dbuf = decoded_data;
ebuf = encoded_data;
for (i = 0; i < decoded_data_len / sizeof(short); i++) {
ebuf[i] = linear_to_ulaw(dbuf[i]);
}
*encoded_data_len = i;
return SWITCH_STATUS_SUCCESS;
}
static switch_status_t switch_g711u_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)
{
short *dbuf;
unsigned char *ebuf;
uint32_t i;
dbuf = decoded_data;
ebuf = encoded_data;
if (*flag & SWITCH_CODEC_FLAG_SILENCE) {
memset(dbuf, 0, codec->implementation->bytes_per_frame);
*decoded_data_len = codec->implementation->bytes_per_frame;
} else {
for (i = 0; i < encoded_data_len; i++) {
dbuf[i] = ulaw_to_linear(ebuf[i]);
}
*decoded_data_len = i * 2;
}
return SWITCH_STATUS_SUCCESS;
}
static switch_status_t switch_g711u_destroy(switch_codec_t *codec)
{
return SWITCH_STATUS_SUCCESS;
}
static switch_status_t switch_g711a_init(switch_codec_t *codec, switch_codec_flag_t flags, const switch_codec_settings_t *codec_settings)
{
uint32_t encoding, decoding;
encoding = (flags & SWITCH_CODEC_FLAG_ENCODE);
decoding = (flags & SWITCH_CODEC_FLAG_DECODE);
if (!(encoding || decoding)) {
return SWITCH_STATUS_FALSE;
} else {
return SWITCH_STATUS_SUCCESS;
}
}
static switch_status_t switch_g711a_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)
{
short *dbuf;
unsigned char *ebuf;
uint32_t i;
dbuf = decoded_data;
ebuf = encoded_data;
for (i = 0; i < decoded_data_len / sizeof(short); i++) {
ebuf[i] = linear_to_alaw(dbuf[i]);
}
*encoded_data_len = i;
return SWITCH_STATUS_SUCCESS;
}
static switch_status_t switch_g711a_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)
{
short *dbuf;
unsigned char *ebuf;
uint32_t i;
dbuf = decoded_data;
ebuf = encoded_data;
if (*flag & SWITCH_CODEC_FLAG_SILENCE) {
memset(dbuf, 0, codec->implementation->bytes_per_frame);
*decoded_data_len = codec->implementation->bytes_per_frame;
} else {
for (i = 0; i < encoded_data_len; i++) {
dbuf[i] = alaw_to_linear(ebuf[i]);
}
*decoded_data_len = i * 2;
}
return SWITCH_STATUS_SUCCESS;
}
static switch_status_t switch_g711a_destroy(switch_codec_t *codec)
{
return SWITCH_STATUS_SUCCESS;
}
/* G711 - END */
/* G722 - START */
struct g722_context {
g722_decode_state_t decoder_object;
g722_encode_state_t encoder_object;
};
static switch_status_t switch_g722_init(switch_codec_t *codec, switch_codec_flag_t flags, const switch_codec_settings_t *codec_settings)
{
uint32_t encoding, decoding;
struct g722_context *context = NULL;
encoding = (flags & SWITCH_CODEC_FLAG_ENCODE);
decoding = (flags & SWITCH_CODEC_FLAG_DECODE);
if (!(encoding || decoding) || (!(context = switch_core_alloc(codec->memory_pool, sizeof(struct g722_context))))) {
return SWITCH_STATUS_FALSE;
} else {
if (encoding) {
g722_encode_init(&context->encoder_object, 64000, G722_PACKED);
}
if (decoding) {
g722_decode_init(&context->decoder_object, 64000, G722_PACKED);
}
}
codec->private_info = context;
return SWITCH_STATUS_SUCCESS;
}
static switch_status_t switch_g722_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 g722_context *context = codec->private_info;
if (!context) {
return SWITCH_STATUS_FALSE;
}
*encoded_data_len = g722_encode(&context->encoder_object, (uint8_t *) encoded_data, (int16_t *) decoded_data, decoded_data_len / 2);
return SWITCH_STATUS_SUCCESS;
}
static switch_status_t switch_g722_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 g722_context *context = codec->private_info;
if (!context) {
return SWITCH_STATUS_FALSE;
}
*decoded_data_len = (2 * g722_decode(&context->decoder_object, (int16_t *) decoded_data, (uint8_t *) encoded_data, encoded_data_len));
return SWITCH_STATUS_SUCCESS;
}
static switch_status_t switch_g722_destroy(switch_codec_t *codec)
{
/* We do not need to use release here as the pool memory is taken care of for us */
codec->private_info = NULL;
return SWITCH_STATUS_SUCCESS;
}
/* G722 - END */
/* G726 - START */
static switch_status_t switch_g726_init(switch_codec_t *codec, switch_codec_flag_t flags, const switch_codec_settings_t *codec_settings)
{
uint32_t encoding, decoding;
int packing = G726_PACKING_RIGHT;
g726_state_t *context;
encoding = (flags & SWITCH_CODEC_FLAG_ENCODE);
decoding = (flags & SWITCH_CODEC_FLAG_DECODE);
if (!(encoding || decoding) || (!(context = switch_core_alloc(codec->memory_pool, sizeof(*context))))) {
return SWITCH_STATUS_FALSE;
} else {
if ((flags & SWITCH_CODEC_FLAG_AAL2 || strstr(codec->implementation->iananame, "AAL2"))) {
packing = G726_PACKING_LEFT;
}
g726_init(context, codec->implementation->bits_per_second, G726_ENCODING_LINEAR, packing);
codec->private_info = context;
return SWITCH_STATUS_SUCCESS;
}
}
static switch_status_t switch_g726_destroy(switch_codec_t *codec)
{
codec->private_info = NULL;
return SWITCH_STATUS_SUCCESS;
}
static switch_status_t switch_g726_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)
{
g726_state_t *context = codec->private_info;
if (!context) {
return SWITCH_STATUS_FALSE;
}
*encoded_data_len = g726_encode(context, (uint8_t *) encoded_data, (int16_t *) decoded_data, decoded_data_len / 2);
return SWITCH_STATUS_SUCCESS;
}
static switch_status_t switch_g726_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)
{
g726_state_t *context = codec->private_info;
if (!context) {
return SWITCH_STATUS_FALSE;
}
*decoded_data_len = (2 * g726_decode(context, (int16_t *) decoded_data, (uint8_t *) encoded_data, encoded_data_len));
return SWITCH_STATUS_SUCCESS;
}
/* G726 - START */
/* IMA_ADPCM - START */
struct ima_adpcm_context {
ima_adpcm_state_t decoder_object;
ima_adpcm_state_t encoder_object;
};
static switch_status_t switch_adpcm_init(switch_codec_t *codec, switch_codec_flag_t flags, const switch_codec_settings_t *codec_settings)
{
uint32_t encoding, decoding;
struct ima_adpcm_context *context = NULL;
encoding = (flags & SWITCH_CODEC_FLAG_ENCODE);
decoding = (flags & SWITCH_CODEC_FLAG_DECODE);
if (!(encoding || decoding) || (!(context = switch_core_alloc(codec->memory_pool, sizeof(*context))))) {
return SWITCH_STATUS_FALSE;
} else {
if (encoding) {
ima_adpcm_init(&context->encoder_object, IMA_ADPCM_DVI4);
}
if (decoding) {
ima_adpcm_init(&context->decoder_object, IMA_ADPCM_DVI4);
}
codec->private_info = context;
return SWITCH_STATUS_SUCCESS;
}
}
static switch_status_t switch_adpcm_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 ima_adpcm_context *context = codec->private_info;
if (!context) {
return SWITCH_STATUS_FALSE;
}
*encoded_data_len = ima_adpcm_encode(&context->encoder_object, (uint8_t *) encoded_data, (int16_t *) decoded_data, decoded_data_len / 2);
return SWITCH_STATUS_SUCCESS;
}
static switch_status_t switch_adpcm_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 ima_adpcm_context *context = codec->private_info;
if (!context) {
return SWITCH_STATUS_FALSE;
}
*decoded_data_len = (2 * ima_adpcm_decode(&context->decoder_object, (int16_t *) decoded_data, (uint8_t *) encoded_data, encoded_data_len));
return SWITCH_STATUS_SUCCESS;
}
static switch_status_t switch_adpcm_destroy(switch_codec_t *codec)
{
/* We do not need to use release here as the pool memory is taken care of for us */
codec->private_info = NULL;
return SWITCH_STATUS_SUCCESS;
}
/* IMA_ADPCM - END */
SWITCH_MODULE_LOAD_FUNCTION(mod_voipcodecs_load)
{
switch_codec_interface_t *codec_interface;
int mpf, spf, bpf, ebpf, count;
/* connect my internal structure to the blank pointer passed to me */
*module_interface = switch_loadable_module_create_module_interface(pool, modname);
/* IMA_ADPCM */
mpf = 10000, spf = 80, bpf = 160, ebpf = 80;
SWITCH_ADD_CODEC(codec_interface, "ADPCM (IMA)");
for (count = 12; count > 0; count--) {
switch_core_codec_add_implementation(pool, codec_interface,
SWITCH_CODEC_TYPE_AUDIO, 5, "DVI4", NULL, 8000, 8000, 32000,
mpf * count, spf * count, bpf * count, ebpf * count, 1, 1, 12,
switch_adpcm_init, switch_adpcm_encode, switch_adpcm_decode, switch_adpcm_destroy);
}
mpf = 10000, spf = 160, bpf = 360, ebpf = 160;
for (count = 12; count > 0; count--) {
switch_core_codec_add_implementation(pool, codec_interface,
SWITCH_CODEC_TYPE_AUDIO, 6, "DVI4", NULL, 16000, 16000, 64000,
mpf * count, spf * count, bpf * count, ebpf * count, 1, 1, 12,
switch_adpcm_init, switch_adpcm_encode, switch_adpcm_decode, switch_adpcm_destroy);
}
/* G726 */
mpf = 10000, spf = 80, bpf = 160, ebpf = 20;
SWITCH_ADD_CODEC(codec_interface, "G.726 16k (AAL2)");
for (count = 12; count > 0; count--) {
switch_core_codec_add_implementation(pool, codec_interface,
SWITCH_CODEC_TYPE_AUDIO, 124, "AAL2-G726-16", NULL, 8000, 8000, 16000,
mpf * count, spf * count, bpf * count, ebpf * count, 1, 1, 12,
switch_g726_init, switch_g726_encode, switch_g726_decode, switch_g726_destroy);
}
SWITCH_ADD_CODEC(codec_interface, "G.726 16k");
for (count = 12; count > 0; count--) {
switch_core_codec_add_implementation(pool, codec_interface,
SWITCH_CODEC_TYPE_AUDIO, 127, "G726-16", NULL, 8000, 8000, 16000,
mpf * count, spf * count, bpf * count, ebpf * count, 1, 1, 12,
switch_g726_init, switch_g726_encode, switch_g726_decode, switch_g726_destroy);
}
/* Increase encoded bytes per frame by 10 */
ebpf = ebpf + 10;
SWITCH_ADD_CODEC(codec_interface, "G.726 24k (AAL2)");
for (count = 12; count > 0; count--) {
switch_core_codec_add_implementation(pool, codec_interface,
SWITCH_CODEC_TYPE_AUDIO, 123, "AAL2-G726-24", NULL, 8000, 8000, 24000,
mpf * count, spf * count, bpf * count, ebpf * count, 1, 1, 12,
switch_g726_init, switch_g726_encode, switch_g726_decode, switch_g726_destroy);
}
SWITCH_ADD_CODEC(codec_interface, "G.726 24k");
for (count = 12; count > 0; count--) {
switch_core_codec_add_implementation(pool, codec_interface,
SWITCH_CODEC_TYPE_AUDIO, 126, "G726-24", NULL, 8000, 8000, 24000,
mpf * count, spf * count, bpf * count, ebpf * count, 1, 1, 12,
switch_g726_init, switch_g726_encode, switch_g726_decode, switch_g726_destroy);
}
/* Increase encoded bytes per frame by 10 */
ebpf = ebpf + 10;
SWITCH_ADD_CODEC(codec_interface, "G.726 32k (AAL2)");
for (count = 12; count > 0; count--) {
switch_core_codec_add_implementation(pool, codec_interface,
SWITCH_CODEC_TYPE_AUDIO, 2, "AAL2-G726-32", NULL, 8000, 8000, 32000,
mpf * count, spf * count, bpf * count, ebpf * count, 1, 1, 12,
switch_g726_init, switch_g726_encode, switch_g726_decode, switch_g726_destroy);
}
SWITCH_ADD_CODEC(codec_interface, "G.726 32k");
for (count = 12; count > 0; count--) {
switch_core_codec_add_implementation(pool, codec_interface,
SWITCH_CODEC_TYPE_AUDIO, 2, "G726-32", NULL, 8000, 8000, 32000,
mpf * count, spf * count, bpf * count, ebpf * count, 1, 1, 12,
switch_g726_init, switch_g726_encode, switch_g726_decode, switch_g726_destroy);
}
/* Increase encoded bytes per frame by 10 */
ebpf = ebpf + 10;
SWITCH_ADD_CODEC(codec_interface, "G.726 40k (AAL2)");
for (count = 12; count > 0; count--) {
switch_core_codec_add_implementation(pool, codec_interface,
SWITCH_CODEC_TYPE_AUDIO, 122, "AAL2-G726-40", NULL, 8000, 8000, 40000,
mpf * count, spf * count, bpf * count, ebpf * count, 1, 1, 12,
switch_g726_init, switch_g726_encode, switch_g726_decode, switch_g726_destroy);
}
SWITCH_ADD_CODEC(codec_interface, "G.726 40k");
for (count = 12; count > 0; count--) {
switch_core_codec_add_implementation(pool, codec_interface,
SWITCH_CODEC_TYPE_AUDIO, 125, "G726-40", NULL, 8000, 8000, 40000,
mpf * count, spf * count, bpf * count, ebpf * count, 1, 1, 12,
switch_g726_init, switch_g726_encode, switch_g726_decode, switch_g726_destroy);
}
/* G722 */
mpf = 10000, spf = 80, bpf = 320, ebpf = 80;
SWITCH_ADD_CODEC(codec_interface, "G.722");
for (count = 12; count > 0; count--) {
switch_core_codec_add_implementation(pool, codec_interface,
SWITCH_CODEC_TYPE_AUDIO, 9, "G722", NULL, 8000, 16000, 64000,
mpf * count, spf * count, bpf * count, ebpf * count, 1, 1, 12,
switch_g722_init, switch_g722_encode, switch_g722_decode, switch_g722_destroy);
}
/* G711 */
mpf = 10000, spf = 80, bpf = 160, ebpf = 80;
SWITCH_ADD_CODEC(codec_interface, "G.711 ulaw");
for (count = 12; count > 0; count--) {
switch_core_codec_add_implementation(pool, codec_interface,
SWITCH_CODEC_TYPE_AUDIO, 0, "PCMU", NULL, 8000, 8000, 64000,
mpf * count, spf * count, bpf * count, ebpf * count, 1, 1, 12,
switch_g711u_init, switch_g711u_encode, switch_g711u_decode, switch_g711u_destroy);
}
SWITCH_ADD_CODEC(codec_interface, "G.711 alaw");
for (count = 12; count > 0; count--) {
switch_core_codec_add_implementation(pool, codec_interface,
SWITCH_CODEC_TYPE_AUDIO, 8, "PCMA", NULL, 8000, 8000, 64000,
mpf * count, spf * count, bpf * count, ebpf * count, 1, 1, 12,
switch_g711a_init, switch_g711a_encode, switch_g711a_decode, switch_g711a_destroy);
}
/* GSM */
mpf = 20000, spf = 160, bpf = 320, ebpf = 33;
SWITCH_ADD_CODEC(codec_interface, "GSM");
for (count = 6; count > 0; count--) {
switch_core_codec_add_implementation(pool, codec_interface,
SWITCH_CODEC_TYPE_AUDIO, 3, "GSM", NULL, 8000, 8000, 13200,
mpf * count, spf * count, bpf * count, ebpf * count, 1, 1, 6,
switch_gsm_init, switch_gsm_encode, switch_gsm_decode, switch_gsm_destroy);
}
/* LPC10 */
SWITCH_ADD_CODEC(codec_interface, "LPC-10");
switch_core_codec_add_implementation(pool, codec_interface,
SWITCH_CODEC_TYPE_AUDIO, 7, "LPC", NULL, 8000, 8000, 2400,
90000, 720, 1440, 28, 1, 1, 1,
switch_lpc10_init, switch_lpc10_encode, switch_lpc10_decode, switch_lpc10_destroy);
/* 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 expandtab:
*/
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