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156 lines
3.3 KiB
156 lines
3.3 KiB
/*
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* $Id$
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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 "AmRtpReceiver.h"
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#include "AmRtpStream.h"
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#include "AmRtpPacket.h"
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#include "log.h"
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#include <errno.h>
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#include <strings.h>
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#include <sys/time.h>
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#include <sys/poll.h>
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#define MAX_RTP_SESSIONS 2048
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#define RTP_POLL_TIMEOUT 50 /*50 ms*/
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AmRtpReceiver* AmRtpReceiver::_instance=0;
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AmRtpReceiver* AmRtpReceiver::instance()
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{
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if(!_instance)
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_instance = new AmRtpReceiver();
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return _instance;
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}
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AmRtpReceiver::AmRtpReceiver()
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{
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fds = new struct pollfd[MAX_RTP_SESSIONS];
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nfds = 0;
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}
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AmRtpReceiver::~AmRtpReceiver()
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{
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delete [] (fds);
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}
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void AmRtpReceiver::on_stop()
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{
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}
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void AmRtpReceiver::run()
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{
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unsigned int tmp_nfds = 0;
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struct pollfd* tmp_fds = new struct pollfd[MAX_RTP_SESSIONS];
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AmRtpPacket p;
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while(true){
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fds_mut.lock();
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tmp_nfds = nfds;
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memcpy(tmp_fds,fds,nfds*sizeof(struct pollfd));
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fds_mut.unlock();
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int ret = poll(tmp_fds,tmp_nfds,RTP_POLL_TIMEOUT);
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if(ret < 0)
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ERROR("AmRtpReceiver: poll: %s\n",strerror(errno));
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if(ret < 1)
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continue;
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for(unsigned int i=0; i<tmp_nfds; i++) {
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if(!(tmp_fds[i].revents & POLLIN))
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continue;
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if(p.recv(tmp_fds[i].fd) > 0){
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int parse_res = p.parse();
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gettimeofday(&p.recv_time,NULL);
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streams_mut.lock();
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Streams::iterator it = streams.find(tmp_fds[i].fd);
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if(it != streams.end()) {
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if (parse_res == -1) {
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DBG("error while parsing RTP packet.\n");
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it->second->clearRTPTimeout(&p.recv_time);
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} else {
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it->second->bufferPacket(&p);
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}
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}
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streams_mut.unlock();
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}
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}
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}
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}
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void AmRtpReceiver::addStream(int sd, AmRtpStream* stream)
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{
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fds_mut.lock();
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if(nfds >= MAX_RTP_SESSIONS){
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fds_mut.unlock();
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ERROR("maximum number of sessions reached (%i)\n",
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MAX_RTP_SESSIONS);
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throw string("maximum number of sessions reached");
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}
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fds[nfds].fd = sd;
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fds[nfds].events = POLLIN;
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fds[nfds].revents = 0;
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nfds++;
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fds_mut.unlock();
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streams_mut.lock();
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streams.insert(std::make_pair(sd,stream));
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streams_mut.unlock();
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}
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void AmRtpReceiver::removeStream(int sd)
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{
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fds_mut.lock();
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for(unsigned int i=0; i<nfds; i++){
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if(fds[i].fd == sd){
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if(--nfds && (i < nfds)){
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fds[i] = fds[nfds];
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}
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break;
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}
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}
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fds_mut.unlock();
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streams_mut.lock();
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streams.erase(sd);
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streams_mut.unlock();
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}
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