| 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_g722.c
* @brief G.722 codec plugins.
*/
#include "tinydav/codecs/g722/tdav_codec_g722.h"
#include "tsk_memory.h"
#include "tsk_debug.h"
typedef struct tdav_codec_g722_s
{
TMEDIA_DECLARE_CODEC_AUDIO;
g722_encode_state_t *enc_state;
g722_decode_state_t *dec_state;
}
tdav_codec_g722_t;
static int tdav_codec_g722_open(tmedia_codec_t* self)
{
tdav_codec_g722_t* g722 = (tdav_codec_g722_t*)self;
if (!g722){
TSK_DEBUG_ERROR("Invalid parameter");
return -1;
}
// Initialize the decoder
if (!g722->dec_state){
#if HAVE_CRT //Debug memory
if (!(g722->dec_state = calloc(1, sizeof(g722_decode_state_t)))){
#else
if (!(g722->dec_state = tsk_calloc(1, sizeof(g722_decode_state_t)))){
#endif //HAVE_CRT
TSK_DEBUG_ERROR("Failed to create G.722 decoder state");
return -2;
}
// Create and/or reset the G.722 decoder
// Bitrate 64 kbps and wideband mode (2)
if (!(g722->dec_state = g722_decode_init(g722->dec_state, 64000, 2))){
TSK_DEBUG_ERROR("g722_decode_init failed");
return -3;
}
}
// Initialize the encoder
if (!g722->enc_state){
#if HAVE_CRT //Debug memory
if (!(g722->enc_state = calloc(1, sizeof(g722_encode_state_t)))){
#else
if (!(g722->enc_state = tsk_calloc(1, sizeof(g722_encode_state_t)))){
#endif //HAVE_CRT
TSK_DEBUG_ERROR("Failed to create G.722 encoder state");
return -4;
}
// Create and/or reset the G.722 encoder
// Bitrate 64 kbps and wideband mode (2)
if (!(g722->enc_state = g722_encode_init(g722->enc_state, 64000, 2))){
TSK_DEBUG_ERROR("g722_encode_init failed");
return -5;
}
}
return 0;
}
static int tdav_codec_g722_close(tmedia_codec_t* self)
{
tdav_codec_g722_t* g722 = (tdav_codec_g722_t*)self;
(void)(g722);
/* resources will be freed by the dctor() */
return 0;
}
static tsk_size_t tdav_codec_g722_encode(tmedia_codec_t* self, const void* in_data, tsk_size_t in_size, void** out_data, tsk_size_t* out_max_size)
{
tsk_size_t out_g722_size;
tdav_codec_g722_t* g722 = (tdav_codec_g722_t*)self;
if (!self || !in_data || !in_size || !out_data){
TSK_DEBUG_ERROR("Invalid parameter");
return 0;
}
out_g722_size = in_size >> 2;
if (*out_max_size < out_g722_size){
if (!(*out_data = tsk_realloc(*out_data, out_g722_size))){
TSK_DEBUG_ERROR("Failed to allocate new buffer");
*out_max_size = 0;
return 0;
}
*out_max_size = out_g722_size;
}
g722_encode(g722->enc_state, (uint8_t*)*out_data, (int16_t*)in_data, (int)in_size / sizeof(int16_t));
return out_g722_size;
}
static tsk_size_t tdav_codec_g722_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)
{
tdav_codec_g722_t* g722 = (tdav_codec_g722_t*)self;
if (!self || !in_data || !in_size || !out_data){
TSK_DEBUG_ERROR("Invalid parameter");
return 0;
}
/* allocate new buffer */
if (*out_max_size < (in_size << 2)){
if (!(*out_data = tsk_realloc(*out_data, in_size << 2))){
TSK_DEBUG_ERROR("Failed to allocate new buffer");
*out_max_size = 0;
return 0;
}
*out_max_size = in_size << 2;
}
g722_decode(g722->dec_state, (int16_t*)*out_data, (uint8_t*)in_data, (int)in_size);
return (in_size << 2);
}
static tsk_bool_t tdav_codec_g722_sdp_att_match(const tmedia_codec_t* codec, const char* att_name, const char* att_value)
{
return tsk_true;
}
static char* tdav_codec_g722_sdp_att_get(const tmedia_codec_t* codec, const char* att_name)
{
return tsk_null;
}
//
// g722 Plugin definition
//
/* constructor */
static tsk_object_t* tdav_codec_g722_ctor(tsk_object_t * self, va_list * app)
{
tdav_codec_g722_t *g722 = self;
if (g722){
/* init base: called by tmedia_codec_create() */
/* init self */
}
return self;
}
/* destructor */
static tsk_object_t* tdav_codec_g722_dtor(tsk_object_t * self)
{
tdav_codec_g722_t *g722 = self;
if (g722){
/* deinit base */
tmedia_codec_audio_deinit(g722);
/* deinit self */
if (g722->enc_state){
g722_encode_release(g722->enc_state), g722->enc_state = tsk_null;
}
if (g722->dec_state){
g722_decode_release(g722->dec_state), g722->dec_state = tsk_null;
}
}
return self;
}
/* object definition */
static const tsk_object_def_t tdav_codec_g722_def_s =
{
sizeof(tdav_codec_g722_t),
tdav_codec_g722_ctor,
tdav_codec_g722_dtor,
tmedia_codec_cmp,
};
/* plugin definition*/
static const tmedia_codec_plugin_def_t tdav_codec_g722_plugin_def_s =
{
&tdav_codec_g722_def_s,
tmedia_audio,
tmedia_codec_id_g722,
"G722",
"g722 Codec (native)",
TMEDIA_CODEC_FORMAT_G722,
tsk_false,
16000,
{ /* audio */
1, // channels
0 // ptime @deprecated
},
/* video */
{ 0 },
tsk_null, // set()
tdav_codec_g722_open,
tdav_codec_g722_close,
tdav_codec_g722_encode,
tdav_codec_g722_decode,
tdav_codec_g722_sdp_att_match,
tdav_codec_g722_sdp_att_get
};
const tmedia_codec_plugin_def_t *tdav_codec_g722_plugin_def_t = &tdav_codec_g722_plugin_def_s; |