/*  The lprtplib 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 <unistd.h>#include <stdio.h>#include <sys/types.h>#endifint cond=1;void stop_handler(int signum){	cond=0;}void ssrc_cb(RtpSession *session){	printf("hey, the ssrc has changed !\n");}static char *help="usage: rtprecv  filename loc_port [--format format] [--soundcard]\n";#define MULAW 0#define ALAW 1#if defined(__hpux) && HAVE_SYS_AUDIO_H#include <sys/audio.h>int sound_init(int format){	int fd;	fd=open("/dev/audio",O_WRONLY);	if (fd<0){		perror("Can't open /dev/audio");		return -1;	}	ioctl(fd,AUDIO_RESET,0);	ioctl(fd,AUDIO_SET_SAMPLE_RATE,8000);	ioctl(fd,AUDIO_SET_CHANNELS,1);	if (format==MULAW)		ioctl(fd,AUDIO_SET_DATA_FORMAT,AUDIO_FORMAT_ULAW);	else ioctl(fd,AUDIO_SET_DATA_FORMAT,AUDIO_FORMAT_ALAW);	return fd;	}#elseint sound_init(int format){	return -1;}#endifint main(int argc, char*argv[]){	RtpSession *session;	unsigned char buffer[160];	int err;	uint32_t ts=0;	int stream_received=0;	FILE *outfile;	int local_port;	int have_more;	int i;	int format=0;	int soundcard=0;	int sound_fd=0;	bool_t adapt=TRUE;		/* init the lib */	if (argc<3){		printf(help);		return -1;	}	local_port=atoi(argv[2]);	if (local_port<=0) {		printf(help);		return -1;	}	for (i=3;i<argc;i++)	{		if (strcmp(argv[i],"--noadapt")==0) adapt=FALSE;		if (strcmp(argv[i],"--format")==0){			i++;			if (i<argc){				if (strcmp(argv[i],"mulaw")==0){					format=MULAW;				}else				if (strcmp(argv[i],"alaw")==0){					format=ALAW;				}else{					printf("Unsupported format %s\n",argv[i]);					return -1;				}			}		}		else if (strcmp(argv[i],"--soundcard")==0){			soundcard=1;		}	}		outfile=fopen(argv[1],"wb");	if (outfile==NULL) {		perror("Cannot open file for writing");		return -1;	}			if (soundcard){		sound_fd=sound_init(format);	}		ortp_init();	ortp_scheduler_init();		signal(SIGINT,stop_handler);	session=rtp_session_new(RTP_SESSION_RECVONLY);		rtp_session_set_scheduling_mode(session,1);	rtp_session_set_blocking_mode(session,1);	rtp_session_set_local_addr(session,"0.0.0.0",atoi(argv[2]));	rtp_session_enable_adaptive_jitter_compensation(session,adapt);	rtp_session_set_jitter_compensation(session,40);	rtp_session_set_payload_type(session,0);	rtp_session_signal_connect(session,"ssrc_changed",(RtpCallback)ssrc_cb,0);	rtp_session_signal_connect(session,"ssrc_changed",(RtpCallback)rtp_session_reset,0);		while(cond)	{		have_more=1;		while (have_more){			err=rtp_session_recv_with_ts(session,buffer,160,ts,&have_more);			if (err>0) stream_received=1;			/* this is to avoid to write to disk some silence before the first RTP packet is returned*/				if ((stream_received) && (err>0)) {				size_t ret = fwrite(buffer,1,err,outfile);				if (sound_fd>0)					ret = write(sound_fd,buffer,err);			}		}		ts+=160;		//ortp_message("Receiving packet.");	}		rtp_session_destroy(session);	ortp_exit();		ortp_global_stats_display();		return 0;}