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87 lines
2.4 KiB
87 lines
2.4 KiB
/*
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* $Id: AmRtpAudio.cpp,v 1.1.2.7 2005/06/01 12:00:24 rco Exp $
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*
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* Copyright (C) 2002-2003 Fhg Fokus
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*
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* This file is part of sems, a free SIP media server.
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*
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* sems 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 2 of the License, or
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* (at your option) any later version
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*
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* For a license to use the ser software under conditions
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* other than those described here, or to purchase support for this
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* software, please contact iptel.org by e-mail at the following addresses:
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* info@iptel.org
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*
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* sems 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 this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*/
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#include "AmRtpAudio.h"
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#include <sys/time.h>
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AmRtpAudio::AmRtpAudio(AmSession* _s)
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: AmRtpStream(_s), AmAudio(0)
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{
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}
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/*
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@param audio_buffer_ts [in] the current ts in the audio buffer
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*/
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int AmRtpAudio::receive(unsigned int audio_buffer_ts)
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{
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int ret = 1;
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while(ret > 0){
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unsigned int ts;
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ret = AmRtpStream::receive((unsigned char*)samples,
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(unsigned int)AUDIO_BUFFER_SIZE,ts,
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audio_buffer_ts);
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if(ret <= 0)
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break;
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int size = decode(ret);
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if(size <= 0){
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ERROR("decode() returned %i\n",size);
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return -1;
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}
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timed_buffer.put(ts,(ShortSample*)((unsigned char*)samples),size >> 1);
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}
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return ret;
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}
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int AmRtpAudio::get(unsigned int user_ts, unsigned char* buffer, unsigned int nb_samples)
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{
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int size = read(user_ts,nb_samples<<1);
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memcpy(buffer,(unsigned char*)samples,size);
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return size;
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}
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int AmRtpAudio::read(unsigned int user_ts, unsigned int size)
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{
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timed_buffer.get(user_ts,(ShortSample*)((unsigned char*)samples),size>>1);
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return size;
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}
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int AmRtpAudio::write(unsigned int user_ts, unsigned int size)
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{
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send(user_ts,(unsigned char*)samples,size);
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return 0;
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}
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void AmRtpAudio::init(const SdpPayload* sdp_payload)
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{
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AmRtpStream::init(sdp_payload);
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fmt.reset(new AmAudioRtpFormat(int_payload, format_parameters));
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}
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