270 lines
7.6 KiB
C
270 lines
7.6 KiB
C
/*
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* Copyright (C) 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_speakup_jitterbuffer.c
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* @brief Speakup Audio jitterbuffer Plugin
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*
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* @author Mamadou Diop <diopmamadou(at)doubango.org>
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*/
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#include "tinydav/audio/tdav_speakup_jitterbuffer.h"
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#include "tinyrtp/rtp/trtp_rtp_header.h"
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#include "tsk_time.h"
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#include "tsk_memory.h"
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#include "tsk_debug.h"
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#include <string.h>
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#if TSK_UNDER_WINDOWS
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# include <Winsock2.h> // timeval
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#elif defined(__SYMBIAN32__)
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# include <_timeval.h>
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#else
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# include <sys/time.h>
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#endif
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static int _10ms_size_bytes = 160;
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#define TDAV_SPEAKUP_10MS 10
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#define TDAV_SPEAKUP_10MS_FRAME_SIZE(self) (((self)->rate * TDAV_SPEAKUP_10MS)/1000)
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#define TDAV_SPEAKUP_PTIME_FRAME_SIZE(self) (((self)->rate * (self)->framesize)/1000)
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int tdav_speakup_jitterbuffer_open(tmedia_jitterbuffer_t* self, uint32_t frame_duration, uint32_t rate)
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{
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tdav_speakup_jitterbuffer_t *jitterbuffer = (tdav_speakup_jitterbuffer_t *)self;
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if(!jitterbuffer->jbuffer){
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if(!(jitterbuffer->jbuffer = jb_new())){
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TSK_DEBUG_ERROR("Failed to create new buffer");
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return -1;
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}
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jitterbuffer->jcodec = JB_CODEC_OTHER;
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}
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jitterbuffer->ref_timestamp = 0;
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jitterbuffer->frame_duration = frame_duration;
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jitterbuffer->rate = rate;
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return 0;
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}
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int tdav_speakup_jitterbuffer_tick(tmedia_jitterbuffer_t* self)
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{
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return 0;
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}
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int tdav_speakup_jitterbuffer_put(tmedia_jitterbuffer_t* self, void* data, tsk_size_t data_size, const tsk_object_t* proto_hdr)
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{
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tdav_speakup_jitterbuffer_t *jitterbuffer = (tdav_speakup_jitterbuffer_t *)self;
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const trtp_rtp_header_t* rtp_hdr = (const trtp_rtp_header_t*)proto_hdr;
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int i;
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long now, ts;
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void* _10ms_buf;
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uint8_t* pdata;
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if(!self || !data || !data_size || !jitterbuffer->jbuffer || !rtp_hdr){
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TSK_DEBUG_ERROR("Invalid parameter");
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return -1;
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}
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/* synchronize the reference timestamp */
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if(!jitterbuffer->ref_timestamp){
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uint64_t epoch = tsk_time_epoch();
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struct timeval tv;
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long ts = (rtp_hdr->timestamp/(jitterbuffer->rate/1000));
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//=> Do not use (see clock_gettime() on linux): tsk_gettimeofday(&tv, tsk_null);
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tv.tv_sec = (long)(epoch)/1000;
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tv.tv_usec = (long)(epoch - (tv.tv_sec*1000))*1000;
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tv.tv_sec -= (ts / jitterbuffer->rate);
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tv.tv_usec -= (ts % jitterbuffer->rate) * 125;
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if((tv.tv_usec -= (tv.tv_usec % (TDAV_SPEAKUP_10MS * 10000))) <0){
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tv.tv_usec += 1000000;
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tv.tv_sec -= 1;
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}
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jitterbuffer->ref_timestamp = tsk_time_get_ms(&tv);
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switch(rtp_hdr->payload_type){
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case 8: /*TMEDIA_CODEC_FORMAT_G711a*/
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case 0: /* TMEDIA_CODEC_FORMAT_G711u */
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jitterbuffer->jcodec = JB_CODEC_G711x;
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break;
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case 18: /* TMEDIA_CODEC_FORMAT_G729 */
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jitterbuffer->jcodec = JB_CODEC_G729A;
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break;
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case 3: /* TMEDIA_CODEC_FORMAT_GSM */
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jitterbuffer->jcodec = JB_CODEC_GSM_EFR;
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break;
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default:
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jitterbuffer->jcodec = JB_CODEC_OTHER;
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break;
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}
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}
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// split as several 10ms frames
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now = (long) (tsk_time_now()-jitterbuffer->ref_timestamp);
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ts = (long)(rtp_hdr->timestamp/(jitterbuffer->rate/1000));
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pdata = (uint8_t*)data;
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for(i=0; i<(int)(data_size/_10ms_size_bytes);i++){
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if((_10ms_buf = tsk_calloc(_10ms_size_bytes, 1))){
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memcpy(_10ms_buf, &pdata[i*_10ms_size_bytes], _10ms_size_bytes);
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jb_put(jitterbuffer->jbuffer, _10ms_buf, JB_TYPE_VOICE, TDAV_SPEAKUP_10MS, ts, now, jitterbuffer->jcodec);
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_10ms_buf = tsk_null;
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}
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ts += TDAV_SPEAKUP_10MS;
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}
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return 0;
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}
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tsk_size_t tdav_speakup_jitterbuffer_get(tmedia_jitterbuffer_t* self, void* out_data, tsk_size_t out_size)
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{
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tdav_speakup_jitterbuffer_t *jitterbuffer = (tdav_speakup_jitterbuffer_t *)self;
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int jret;
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int i, _10ms_count;
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long now;
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short* _10ms_buf = tsk_null;
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uint8_t* pout_data = (uint8_t*)out_data;
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if(!out_data || (out_size % _10ms_size_bytes)){
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TSK_DEBUG_ERROR("Invalid parameter");
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return 0;
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}
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_10ms_count = (out_size/_10ms_size_bytes);
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now = (long) (tsk_time_now() - jitterbuffer->ref_timestamp);
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for(i=0; i<_10ms_count; i++){
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jret = jb_get(jitterbuffer->jbuffer, (void**)&_10ms_buf, now, TDAV_SPEAKUP_10MS);
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switch(jret){
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case JB_INTERP:
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TSK_DEBUG_INFO("JB_INTERP");
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jb_reset_all(jitterbuffer->jbuffer);
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memset(&pout_data[i*_10ms_size_bytes], 0, (_10ms_count*_10ms_size_bytes)-(i*_10ms_size_bytes));
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i = _10ms_count; // for exit
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break;
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case JB_OK:
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case JB_EMPTY:
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case JB_NOFRAME:
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case JB_NOJB:
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{
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if(_10ms_buf && (jret == JB_OK)){
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/* copy data */
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memcpy(&pout_data[i*_10ms_size_bytes], _10ms_buf, _10ms_size_bytes);
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}
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else{
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/* copy silence */
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memset(&pout_data[i*_10ms_size_bytes], 0, _10ms_size_bytes);
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}
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}
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default:
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break;
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}
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TSK_FREE(_10ms_buf);
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}
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return (_10ms_count * _10ms_size_bytes);
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}
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int tdav_speakup_jitterbuffer_reset(tmedia_jitterbuffer_t* self)
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{
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tdav_speakup_jitterbuffer_t *jitterbuffer = (tdav_speakup_jitterbuffer_t *)self;
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if(jitterbuffer->jbuffer){
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jb_reset_all(jitterbuffer->jbuffer);
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return 0;
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}
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else{
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TSK_DEBUG_ERROR("invalid parameter");
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return -1;
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}
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}
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int tdav_speakup_jitterbuffer_close(tmedia_jitterbuffer_t* self)
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{
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tdav_speakup_jitterbuffer_t *jitterbuffer = (tdav_speakup_jitterbuffer_t *)self;
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if(jitterbuffer->jbuffer){
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jb_destroy(jitterbuffer->jbuffer);
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jitterbuffer->jbuffer = tsk_null;
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}
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return 0;
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}
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//
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// Speakup jitterbufferr Plugin definition
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//
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/* constructor */
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static tsk_object_t* tdav_speakup_jitterbuffer_ctor(tsk_object_t * self, va_list * app)
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{
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tdav_speakup_jitterbuffer_t *jitterbuffer = self;
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if(jitterbuffer){
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/* init base */
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tmedia_jitterbuffer_init(TMEDIA_JITTER_BUFFER(jitterbuffer));
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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_speakup_jitterbuffer_dtor(tsk_object_t * self)
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{
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tdav_speakup_jitterbuffer_t *jitterbuffer = self;
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if(jitterbuffer){
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/* deinit base */
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tmedia_jitterbuffer_deinit(TMEDIA_JITTER_BUFFER(jitterbuffer));
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/* deinit self */
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if(jitterbuffer->jbuffer){
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jb_destroy(jitterbuffer->jbuffer);
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jitterbuffer->jbuffer = tsk_null;
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}
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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_speakup_jitterbuffer_def_s =
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{
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sizeof(tdav_speakup_jitterbuffer_t),
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tdav_speakup_jitterbuffer_ctor,
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tdav_speakup_jitterbuffer_dtor,
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tsk_null,
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};
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/* plugin definition*/
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static const tmedia_jitterbuffer_plugin_def_t tdav_speakup_jitterbuffer_plugin_def_s =
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{
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&tdav_speakup_jitterbuffer_def_s,
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"Audio/video JitterBuffer based on Speex",
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tdav_speakup_jitterbuffer_open,
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tdav_speakup_jitterbuffer_tick,
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tdav_speakup_jitterbuffer_put,
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tdav_speakup_jitterbuffer_get,
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tdav_speakup_jitterbuffer_reset,
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tdav_speakup_jitterbuffer_close,
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};
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const tmedia_jitterbuffer_plugin_def_t *tdav_speakup_jitterbuffer_plugin_def_t = &tdav_speakup_jitterbuffer_plugin_def_s;
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