/*  The oRTP LinPhone RTP library intends to provide basics for a RTP stack.  Copyright (C) 2001  Simon MORLAT simon.morlat@linphone.org  This library is free software; you can redistribute it and/or  modify it under the terms of the GNU Lesser General Public  License as published by the Free Software Foundation; either  version 2.1 of the License, or (at your option) any later version.  This library is distributed in the hope that it will be useful,  but WITHOUT ANY WARRANTY; without even the implied warranty of  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU  Lesser General Public License for more details.  You should have received a copy of the GNU Lesser General Public  License along with this library; if not, write to the Free Software  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA*/#include <ortp/ortp.h>#include <signal.h>#include <stdlib.h>#ifndef _WIN32 #include <sys/types.h>#include <sys/time.h>#include <stdio.h>#endifint runcond=1;void stophandler(int signum){	runcond=0;}static char *help="usage: rtpsend	filename dest_ip4addr dest_port [ --with-clockslide value ] [ --with-jitter]\n";int main(int argc, char *argv[]){	RtpSession *session;	unsigned char buffer[160];	int i;	FILE *infile;	char *ssrc;	uint32_t user_ts=0;	int clockslide=0;	int jitter=0;	if (argc<4){		printf(help);		return -1;	}	for(i=4;i<argc;i++){		if (strcmp(argv[i],"--with-clockslide")==0){			i++;			if (i>=argc) {				printf(help);				return -1;			}			clockslide=atoi(argv[i]);			ortp_message("Using clockslide of %i milisecond every 50 packets.",clockslide);		}else if (strcmp(argv[i],"--with-jitter")==0){			ortp_message("Jitter will be added to outgoing stream.");			jitter=1;		}	}		ortp_init();	ortp_scheduler_init();	session=rtp_session_new(RTP_SESSION_SENDONLY);			rtp_session_set_scheduling_mode(session,1);	rtp_session_set_blocking_mode(session,1);	rtp_session_set_remote_addr(session,argv[2],atoi(argv[3]));	rtp_session_set_payload_type(session,0);		ssrc=getenv("SSRC");	if (ssrc!=NULL) {		printf("using SSRC=%i.\n",atoi(ssrc));		rtp_session_set_ssrc(session,atoi(ssrc));	}			#ifndef _WIN32	infile=fopen(argv[1],"r");	#else	infile=fopen(argv[1],"rb");	#endif	if (infile==NULL) {		perror("Cannot open file");		return -1;	}	signal(SIGINT,stophandler);	while( ((i=fread(buffer,1,160,infile))>0) && (runcond) )	{		rtp_session_send_with_ts(session,buffer,i,user_ts);		user_ts+=160;		if (clockslide!=0 && user_ts%(160*50)==0){			ortp_message("Clock sliding of %i miliseconds now",clockslide);			rtp_session_make_time_distorsion(session,clockslide);		}		if (jitter && (user_ts%(160*6)==0)) usleep(50000);	}	fclose(infile);	rtp_session_destroy(session);	ortp_exit();	ortp_global_stats_display();	return 0;}