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This isn't working yet. I'm adding it so tony can get quick/easy access to it. /b 

git-svn-id: http://svn.freeswitch.org/svn/freeswitch/trunk@2396 d0543943-73ff-0310-b7d9-9358b9ac24b2
This commit is contained in:
Brian West 2006-08-25 22:21:03 +00:00
parent a4bd603897
commit 89604ff718
2 changed files with 259 additions and 0 deletions
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16
src/mod/codecs/mod_g726/Makefile Normal file
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LDFLAGS +=-lg726
all: depends $(MODNAME).$(DYNAMIC_LIB_EXTEN)
depends:
MAKE=$(MAKE) $(BASE)/build/buildlib.sh $(BASE) install codec/g726 --prefix=$(PREFIX)
$(MODNAME).$(DYNAMIC_LIB_EXTEN): $(MODNAME).c
$(CC) $(CFLAGS) -fPIC -c $(MODNAME).c -o $(MODNAME).o
$(CC) $(SOLINK) $(MODNAME).o -o $(MODNAME).$(DYNAMIC_LIB_EXTEN) $(LDFLAGS)
clean:
rm -fr *.$(DYNAMIC_LIB_EXTEN) *.o *~
install:
cp -f $(MODNAME).$(DYNAMIC_LIB_EXTEN) $(PREFIX)/mod

243
src/mod/codecs/mod_g726/mod_g726.c Normal file
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/*
* 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 / Soft-Switch Application
*
* The Initial Developer of the Original Code is
* Anthony Minessale II <anthmct@yahoo.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>
*
*
* mod_g726.c -- G726 Codec Module
*
*/
#include "switch.h"
#include "g72x.h"
static const char modname[] = "mod_g726";
static switch_status_t switch_g726_init(switch_codec_t *codec, switch_codec_flag_t flags,
const switch_codec_settings_t *codec_settings)
{
int encoding, decoding;
struct g726_state_s *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 g726_state_s))))) {
return SWITCH_STATUS_FALSE;
} else {
g726_init_state(context);
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;
}
#define define_encoder(func, coder, datalen)\
static switch_status_t func(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 g726_state_s *context = codec->private_info;\
\
if (!context) {\
return SWITCH_STATUS_FALSE;\
}\
\
if (decoded_data_len % datalen == 0) {\
coder(*(int *)decoded_data , AUDIO_ENCODING_LINEAR, context);\
}\
\
return SWITCH_STATUS_SUCCESS;\
}\
#define define_decoder(func, coder, datalen)\
static switch_status_t func(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 g726_state_s *context = codec->private_info;\
\
if (!context) {\
return SWITCH_STATUS_FALSE;\
}\
\
if (encoded_data_len % datalen == 0) {\
coder(*(int *)encoded_data, AUDIO_ENCODING_LINEAR, context);\
}\
\
return SWITCH_STATUS_SUCCESS;\
}\
define_encoder(switch_g726_16k_encode, g726_16_encoder, 160)
define_decoder(switch_g726_16k_decode, g726_16_decoder, 40)
define_encoder(switch_g726_24k_encode, g726_24_encoder, 160)
define_decoder(switch_g726_24k_decode, g726_24_decoder, 60)
define_encoder(switch_g726_32k_encode, g726_32_encoder, 160)
define_decoder(switch_g726_32k_decode, g726_32_decoder, 80)
define_encoder(switch_g726_40k_encode, g726_40_encoder, 160)
define_decoder(switch_g726_40k_decode, g726_40_decoder, 100)
/* Registration */
static const switch_codec_implementation_t g726_16k_implementation = {
/*.codec_type */ SWITCH_CODEC_TYPE_AUDIO,
/*.ianacode */ 2,
/*.iananame */ "G726-16",
/*.samples_per_second */ 8000,
/*.bits_per_second */ 16000,
/*.microseconds_per_frame */ 20000,
/*.samples_per_frame */ 160,
/*.bytes_per_frame */ 40,
/*.encoded_bytes_per_frame */ 10,
/*.number_of_channels */ 1,
/*.pref_frames_per_packet */ 1,
/*.max_frames_per_packet */ 1,
/*.init */ switch_g726_init,
/*.encode */ switch_g726_16k_encode,
/*.decode */ switch_g726_16k_decode,
/*.destroy */ switch_g726_destroy,
};
static const switch_codec_implementation_t g726_24k_implementation = {
/*.codec_type */ SWITCH_CODEC_TYPE_AUDIO,
/*.ianacode */ 2,
/*.iananame */ "G726-24",
/*.samples_per_second */ 8000,
/*.bits_per_second */ 24000,
/*.microseconds_per_frame */ 20000,
/*.samples_per_frame */ 160,
/*.bytes_per_frame */ 60,
/*.encoded_bytes_per_frame */ 10,
/*.number_of_channels */ 1,
/*.pref_frames_per_packet */ 1,
/*.max_frames_per_packet */ 1,
/*.init */ switch_g726_init,
/*.encode */ switch_g726_24k_encode,
/*.decode */ switch_g726_24k_decode,
/*.destroy */ switch_g726_destroy,
};
static const switch_codec_implementation_t g726_32k_implementation = {
/*.codec_type */ SWITCH_CODEC_TYPE_AUDIO,
/*.ianacode */ 2,
/*.iananame */ "G726-32",
/*.samples_per_second */ 8000,
/*.bits_per_second */ 32000,
/*.microseconds_per_frame */ 20000,
/*.samples_per_frame */ 160,
/*.bytes_per_frame */ 80,
/*.encoded_bytes_per_frame */ 10,
/*.number_of_channels */ 1,
/*.pref_frames_per_packet */ 1,
/*.max_frames_per_packet */ 1,
/*.init */ switch_g726_init,
/*.encode */ switch_g726_32k_encode,
/*.decode */ switch_g726_32k_decode,
/*.destroy */ switch_g726_destroy,
};
static const switch_codec_implementation_t g726_40k_implementation = {
/*.codec_type */ SWITCH_CODEC_TYPE_AUDIO,
/*.ianacode */ 2,
/*.iananame */ "G726-40",
/*.samples_per_second */ 8000,
/*.bits_per_second */ 40000,
/*.microseconds_per_frame */ 20000,
/*.samples_per_frame */ 160,
/*.bytes_per_frame */ 100,
/*.encoded_bytes_per_frame */ 10,
/*.number_of_channels */ 1,
/*.pref_frames_per_packet */ 1,
/*.max_frames_per_packet */ 1,
/*.init */ switch_g726_init,
/*.encode */ switch_g726_40k_encode,
/*.decode */ switch_g726_40k_decode,
/*.destroy */ switch_g726_destroy,
};
const switch_codec_interface_t g726_16k_codec_interface = {
/*.interface_name */ "G.726 16k",
/*.implementations */ &g726_16k_implementation,
};
const switch_codec_interface_t g726_24k_codec_interface = {
/*.interface_name */ "G.726 24k",
/*.implementations */ &g726_24k_implementation,
/*.next */ &g726_16k_codec_interface
};
const switch_codec_interface_t g726_32k_codec_interface = {
/*.interface_name */ "G.726 32k",
/*.implementations */ &g726_32k_implementation,
/*.next */ &g726_24k_codec_interface
};
const switch_codec_interface_t g726_40k_codec_interface = {
/*.interface_name */ "G.726 40k",
/*.implementations */ &g726_40k_implementation,
/*.next */ &g726_32k_codec_interface
};
static switch_loadable_module_interface_t g726_module_interface = {
/*.module_name */ modname,
/*.endpoint_interface */ NULL,
/*.timer_interface */ NULL,
/*.dialplan_interface */ NULL,
/*.codec_interface */ &g726_40k_codec_interface,
/*.application_interface */ NULL
};
SWITCH_MOD_DECLARE(switch_status_t) switch_module_load(const switch_loadable_module_interface_t **module_interface,
char *filename)
{
/* connect my internal structure to the blank pointer passed to me */
*module_interface = &g726_module_interface;
/* indicate that the module should continue to be loaded */
return SWITCH_STATUS_SUCCESS;
}