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