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The oRTP LinPhone RTP library intends to provide basics for a RTP stack.
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Copyright (C) 2001 Simon MORLAT simon.morlat@linphone.org
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This library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Lesser General Public
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License as published by the Free Software Foundation; either
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version 2.1 of the License, or (at your option) any later version.
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This library 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 GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public
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License along with this library; 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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/* this program shows how to receive streams in paralel using the SessionSet api
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and two threads only. */
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#include <ortp/ortp.h>
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#include <sys/types.h>
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void stophandler(int signum)
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static char *help="usage: mrtprecv file_prefix local_port number_of_streams \n"
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"Receives multiples rtp streams on local_port+2*k, k={0..number_of_streams}\n";
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#define STREAMS_COUNT 1000
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/* malloc'd in order to detect buffer overflows with efence */
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static uint8_t* recvbuf=0;
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int rtp2disk(RtpSession *session,uint32_t ts, int fd)
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err=rtp_session_recv_with_ts(session,recvbuf,160,ts,&havemore);
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if (havemore) printf("warning: havemore=%i!\n",havemore);
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rtp_session_set_data(session,(void*)1);
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/* to indicate that (for the application) the stream has started, so we can start
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if (session->user_data != NULL) {
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size_t ret = write(fd,recvbuf,err);
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int main(int argc, char *argv[])
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RtpSession *session[STREAMS_COUNT];
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int filefd[STREAMS_COUNT];
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channels=atoi(argv[3]);
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ortp_scheduler_init();
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recvbuf=ortp_malloc(160);
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for (i=0;i<channels;i++){
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session[i]=rtp_session_new(RTP_SESSION_RECVONLY);
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rtp_session_set_scheduling_mode(session[i],1);
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rtp_session_set_blocking_mode(session[i],0);
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rtp_session_set_local_addr(session[i],"0.0.0.0",port);
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rtp_session_set_payload_type(session[i],0);
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rtp_session_enable_adaptive_jitter_compensation(session[i], TRUE);
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rtp_session_set_recv_buf_size(session[i],256);
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filename=ortp_malloc(strlen(argv[1])+15);
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for (i=0;i<channels;i++){
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sprintf(filename,"%s%4.4d.dat",argv[1],i);
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filefd[i]=open(filename,O_WRONLY | O_CREAT | O_TRUNC, S_IRUSR|S_IWUSR|S_IRGRP|S_IWGRP);
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filefd[i]=open(filename,_O_BINARY | O_WRONLY | O_CREAT | O_TRUNC);
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if (filefd[i]<0) ortp_error("Could not open %s for writing: %s",filename,strerror(errno));
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signal(SIGINT,stophandler);
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set=session_set_new();
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for (k=0;k<channels;k++){
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/* add the session to the set */
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session_set_set(set,session[k]);
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//printf("session_set_set %d\n", k);
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/* and then suspend the process by selecting() */
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k=session_set_select(set,NULL,NULL);
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if (k==0) printf("warning: session_set_select() is returning 0...\n");
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for (k=0;k<channels;k++){
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if (session_set_is_set(set,session[k])){
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rtp2disk(session[k],user_ts,filefd[k]);
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//printf("session_set_is_set %d\n", k);
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//printf("warning: session %i is not set !\n",k);
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for (i=0;i<channels;i++){
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rtp_session_destroy(session[i]);
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session_set_destroy(set);
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ortp_global_stats_display();