send_setup_reply.c

linux下的rtp的实例源代码

/* * 
 *  $Id: send_setup_reply.c 350 2006-05-31 18:22:15Z shawill $
 *  
 *  This file is part of Fenice
 *
 *  Fenice -- Open Media Server
 *
 *  Copyright (C) 2004 by
 *  	
 *	- Giampaolo Mancini	<[e-mail]>
 *	- Francesco Varano	<[e-mail]>
 *	- Marco Penno		<[e-mail]>
 *	- Federico Ridolfo	<[e-mail]>
 *	- Eugenio Menegatti 	<[e-mail]>
 *	- Stefano Cau
 *	- Giuliano Emma
 *	- Stefano Oldrini
 * 
 *  Fenice is free software; you can redistribute it and/or modify
 *  it under the terms of the GNU General Public License as published by
 *  the Free Software Foundation; either version 2 of the License, or
 *  (at your option) any later version.
 *
 *  Fenice 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 General Public License for more details.
 *
 *  You should have received a copy of the GNU General Public License
 *  along with Fenice; if not, write to the Free Software
 *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 *  
 * */

#include <stdio.h>
#include <string.h>
#include <config.h>

#include <fenice/rtsp.h>
#include <fenice/utils.h>
#include <fenice/multicast.h>
#include <fenice/fnc_log.h>

int send_setup_reply(RTSP_buffer *rtsp, RTSP_session *session, SD_descr *descr, RTP_session *rtp_s)
{
	char r[1024];
	int w_pos=0;
	char temp[30];
	char ttl[4];
	/* build a reply message */
	
	sprintf(r, "%s %d %s"RTSP_EL"CSeq: %d"RTSP_EL"Server: %s/%s"RTSP_EL, RTSP_VER, 200, get_stat(200), rtsp->rtsp_cseq, PACKAGE,
		VERSION);
	add_time_stamp(r, 0);
	w_pos = strlen(r);
	/*
	strcat(r, "Session: ");
	sprintf(temp, "%d", session->session_id);
	strcat(r, temp);
	strcat(r, RTSP_EL);
 	*/
	w_pos += sprintf(r + w_pos, "Session: %d"RTSP_EL, session->session_id);
	
	w_pos += sprintf(r + w_pos, "Transport: ");
	switch (rtp_s->transport.type) {
		case RTP_rtp_avp:
			// if (!(descr->flags & SD_FL_MULTICAST)) {
			if (rtp_s->transport.u.udp.is_multicast) {
				/*
				strcat(r, "Transport: RTP/AVP;multicast;");
				sprintf(temp, "destination=%s;", descr->multicast);
				strcat(r, temp);
				strcat(r, "port=");
				*/
				w_pos += sprintf(r + w_pos, "RTP/AVP;multicast;ttl=%d;destination=%s;port=", (int)DEFAULT_TTL, descr->multicast);
			} else {
				/*
				strcat(r, "Transport: RTP/AVP;unicast;client_port=");
				sprintf(temp, "%d", rtp_s->transport.u.udp.cli_ports.RTP);
				strcat(r, temp);
				strcat(r, "-");
				sprintf(temp, "%d", rtp_s->transport.u.udp.cli_ports.RTCP);
				strcat(r, temp);

				sprintf(temp, ";source=%s", get_address());
				strcat(r, temp);

				strcat(r, ";server_port=");
				*/
				w_pos += sprintf(r + w_pos, "RTP/AVP;unicast;client_port=%d-%d;source=%s;server_port=", \
					rtp_s->transport.u.udp.cli_ports.RTP, rtp_s->transport.u.udp.cli_ports.RTCP, get_address());
			}
			/*
			sprintf(temp, "%d", rtp_s->transport.u.udp.ser_ports.RTP);
			strcat(r, temp);
			strcat(r, "-");
			sprintf(temp, "%d", rtp_s->transport.u.udp.ser_ports.RTCP);
			strcat(r, temp);
			*/
			w_pos += sprintf(r + w_pos, "%d-%d", rtp_s->transport.u.udp.ser_ports.RTP, rtp_s->transport.u.udp.ser_ports.RTCP);
			
#if 0
			// if ((descr->flags & SD_FL_MULTICAST)) {
			if (rtp_s->transport.u.udp.is_multicast) {
				/*
				strcat(r,";ttl=");
				sprintf(ttl,"%d",(int)DEFAULT_TTL);
				strcat(r,ttl);
				*/
				w_pos += sprintf(r + w_pos, ";ttl=%d", (int)DEFAULT_TTL);
			}
#endif
			break;
		case RTP_rtp_avp_tcp:
			w_pos += sprintf(r + w_pos, "RTP/AVP/TCP;interleaved=%d-%d", \
				rtp_s->transport.u.tcp.interleaved.RTP, rtp_s->transport.u.tcp.interleaved.RTCP);
			break;
		default:
			break;
	}
	/*
	//sprintf(temp, ";ssrc=%u", session->rtp_session->ssrc);
	sprintf(temp, ";ssrc=%u", rtp_s->ssrc); // xxx
	strcat(r, temp);
	*/
	w_pos += sprintf(r + w_pos, ";ssrc=%u", rtp_s->ssrc);
	// strcat(r, "\r\n\r\n");
	strcat(r, RTSP_EL RTSP_EL);
	
	bwrite(r, (unsigned short) strlen(r), rtsp);
	
	fnc_log(FNC_LOG_CLIENT,"200 - %s ",descr->filename);

	return ERR_NOERROR;
}