| c732d49e |
* Contact for licensing options: <licensing-mcpttclient(at)mcopenplatform(dot)com>
*
* The original file was part of Open Source Doubango Framework
* Copyright (C) 2010-2011 Mamadou Diop.
* Copyright (C) 2012 Doubango Telecom <http://doubango.org>
*
* This file is part of Open Source Doubango Framework.
*
* DOUBANGO is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* DOUBANGO is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with DOUBANGO.
*
*/
/**@file tdav_codec_g711.c
* @brief G.711u and G.711a (a.k.a PCMU and PCMA) codec plugins.
*
* @author Mamadou Diop <diopmamadou(at)doubango.org>
*
*/
#include "tinydav/codecs/g711/tdav_codec_g711.h"
#include "tinydav/codecs/g711/g711.h" /* algorithms */
#include "tsk_memory.h"
#include "tsk_debug.h"
/* ============ G.711u Plugin interface ================= */
#define tdav_codec_g711u_open tsk_null
#define tdav_codec_g711u_close tsk_null
#define tdav_codec_g711u_sdp_att_get tsk_null
static tsk_size_t tdav_codec_g711u_encode(tmedia_codec_t* self, const void* in_data, tsk_size_t in_size, void** out_data, tsk_size_t* out_max_size)
{
register tsk_size_t i;
register uint8_t* pout_data;
register int16_t* pin_data;
tsk_size_t out_size;
if(!self || !in_data || !in_size || !out_data){
TSK_DEBUG_ERROR("Invalid parameter");
return 0;
}
out_size = (in_size >> 1);
if(*out_max_size <out_size){
if(!(*out_data = tsk_realloc(*out_data, out_size))){
TSK_DEBUG_ERROR("Failed to allocate new buffer");
*out_max_size = 0;
return 0;
}
*out_max_size = out_size;
}
pout_data = *out_data;
pin_data = (int16_t*)in_data;
for(i = 0; i<out_size; i++){
pout_data[i] = linear2ulaw(pin_data[i]);
}
return out_size;
}
static tsk_size_t tdav_codec_g711u_decode(tmedia_codec_t* self, const void* in_data, tsk_size_t in_size, void** out_data, tsk_size_t* out_max_size, const tsk_object_t* proto_hdr)
{
tsk_size_t i;
tsk_size_t out_size;
if(!self || !in_data || !in_size || !out_data){
TSK_DEBUG_ERROR("Invalid parameter");
return 0;
}
out_size = (in_size << 1);
/* allocate new buffer */
if(*out_max_size<out_size){
if(!(*out_data = tsk_realloc(*out_data, out_size))){
TSK_DEBUG_ERROR("Failed to allocate new buffer");
*out_max_size = 0;
return 0;
}
*out_max_size = out_size;
}
for(i = 0; i<in_size; i++){
((short*)*out_data)[i] = ulaw2linear(((uint8_t*)in_data)[i]);
}
return out_size;
}
static tsk_bool_t tdav_codec_g711u_sdp_att_match(const tmedia_codec_t* codec, const char* att_name, const char* att_value)
{ /* always match */
return tsk_true;
}
//
// G.711u Plugin definition
//
/* constructor */
static tsk_object_t* tdav_codec_g711u_ctor(tsk_object_t * self, va_list * app)
{
tdav_codec_g711u_t *g711u = self;
if(g711u){
/* init base: called by tmedia_codec_create() */
/* init self */
}
return self;
}
/* destructor */
static tsk_object_t* tdav_codec_g711u_dtor(tsk_object_t * self)
{
tdav_codec_g711u_t *g711u = self;
if(g711u){
/* deinit base */
tmedia_codec_audio_deinit(g711u);
/* deinit self */
}
return self;
}
/* object definition */
static const tsk_object_def_t tdav_codec_g711u_def_s =
{
sizeof(tdav_codec_g711u_t),
tdav_codec_g711u_ctor,
tdav_codec_g711u_dtor,
tmedia_codec_cmp,
};
/* plugin definition*/
static const tmedia_codec_plugin_def_t tdav_codec_g711u_plugin_def_s =
{
&tdav_codec_g711u_def_s,
tmedia_audio,
tmedia_codec_id_pcmu,
"PCMU",
"G.711u codec (native)",
TMEDIA_CODEC_FORMAT_G711u,
tsk_false,
8000, // rate
{ /* audio */
1, // channels
0 // ptime @deprecated
},
/* video */
{0},
tsk_null, // set()
tdav_codec_g711u_open,
tdav_codec_g711u_close,
tdav_codec_g711u_encode,
tdav_codec_g711u_decode,
tdav_codec_g711u_sdp_att_match,
tdav_codec_g711u_sdp_att_get
};
const tmedia_codec_plugin_def_t *tdav_codec_g711u_plugin_def_t = &tdav_codec_g711u_plugin_def_s;
/* ============ G.711a Plugin interface ================= */
#define tdav_codec_g711a_open tsk_null
#define tdav_codec_g711a_close tsk_null
#define tdav_codec_g711a_sdp_att_get tsk_null
static tsk_size_t tdav_codec_g711a_encode(tmedia_codec_t* self, const void* in_data, tsk_size_t in_size, void** out_data, tsk_size_t* out_max_size)
{
register tsk_size_t i;
register uint8_t* pout_data;
register int16_t* pin_data;
tsk_size_t out_size;
if(!self || !in_data || !in_size || !out_data){
TSK_DEBUG_ERROR("Invalid parameter");
return 0;
}
out_size = (in_size >> 1);
if(*out_max_size < out_size){
if(!(*out_data = tsk_realloc(*out_data, out_size))){
TSK_DEBUG_ERROR("Failed to allocate new buffer");
*out_max_size = 0;
return 0;
}
*out_max_size = out_size;
}
pout_data = *out_data;
pin_data = (int16_t*)in_data;
for(i = 0; i<out_size; i++){
pout_data[i] = linear2alaw(pin_data[i]);
}
return out_size;
}
#if 0
FILE* file = tsk_null;
int count = 0;
#endif
static tsk_size_t tdav_codec_g711a_decode(tmedia_codec_t* self, const void* in_data, tsk_size_t in_size, void** out_data, tsk_size_t* out_max_size, const tsk_object_t* proto_hdr)
{
tsk_size_t i, out_size;
if(!self || !in_data || !in_size || !out_data){
TSK_DEBUG_ERROR("Invalid parameter");
return 0;
}
out_size = (in_size << 1);
#if 0
if(!file && count<=1000){
file = fopen("./g711a.pcm", "wb");
}
#endif
/* allocate new buffer */
if(*out_max_size < out_size){
if(!(*out_data = tsk_realloc(*out_data, out_size))){
TSK_DEBUG_ERROR("Failed to allocate new buffer");
*out_max_size = 0;
return 0;
}
*out_max_size = out_size;
}
for(i = 0; i<in_size; i++){
((short*)*out_data)[i] = alaw2linear(((uint8_t*)in_data)[i]);
}
#if 0
if(++count<=1000){
fwrite(*out_data, sizeof(short), in_size, file);
}
else if(file){
fclose(file);
file = tsk_null;
}
#endif
return out_size;
}
static tsk_bool_t tdav_codec_g711a_sdp_att_match(const tmedia_codec_t* codec, const char* att_name, const char* att_value)
{ /* always match */
return tsk_true;
}
//
// G.711a Plugin definition
//
/* constructor */
static tsk_object_t* tdav_codec_g711a_ctor(tsk_object_t * self, va_list * app)
{
tdav_codec_g711a_t *g711a = self;
if(g711a){
/* init base: called by tmedia_codec_create() */
/* init self */
}
return self;
}
/* destructor */
static tsk_object_t* tdav_codec_g711a_dtor(tsk_object_t * self)
{
tdav_codec_g711a_t *g711a = self;
if(g711a){
/* deinit base */
tmedia_codec_audio_deinit(g711a);
/* deinit self */
}
return self;
}
/* object definition */
static const tsk_object_def_t tdav_codec_g711a_def_s =
{
sizeof(tdav_codec_g711a_t),
tdav_codec_g711a_ctor,
tdav_codec_g711a_dtor,
tmedia_codec_cmp,
};
/* plugin definition*/
static const tmedia_codec_plugin_def_t tdav_codec_g711a_plugin_def_s =
{
&tdav_codec_g711a_def_s,
tmedia_audio,
tmedia_codec_id_pcma,
"PCMA",
"G.711a codec (native)",
TMEDIA_CODEC_FORMAT_G711a,
tsk_false,
8000, // rate
{ /* audio */
1, // channels
0 // ptime @deprecated
},
/* video */
{0},
tsk_null, // set()
tdav_codec_g711a_open,
tdav_codec_g711a_close,
tdav_codec_g711a_encode,
tdav_codec_g711a_decode,
tdav_codec_g711a_sdp_att_match,
tdav_codec_g711a_sdp_att_get
};
const tmedia_codec_plugin_def_t *tdav_codec_g711a_plugin_def_t = &tdav_codec_g711a_plugin_def_s; |