hust_rtcpsr.c

来自「实现基于ip2022的MPEG2 TS的IP组播接收」· C语言 代码 · 共 105 行

/*-------------------------------------------------------------------------
 * rtcpsr.c - rtcpsr
 *-------------------------------------------------------------------------
 */

#include <ipOS.h>
#include <ipHAL.h>
#include <ipStack.h>
#include <ipEthernet.h>
#include "hust_rtp.h"
#include "hust_rtplibcommon.h"
#include "hust_rtcp.h"
#include "hust_event.h"
#include "hust_hash.h"
#include "hust_linux.h"
///#include <hash.h>
///#include <rtcp.h>
///#include <rtp.h>

/*------------------------------------------------------------------------
 * rtcpsr - process an incoming RTCP sender report
 *------------------------------------------------------------------------
 */
int
rtcpsr(struct session *psn, struct rtcp *prtcp, struct netbuf *udpnb)
{
  
///	struct sr	*psr;
	ssrc_t		ssrc;
	struct stream	*pstm;
///	addr_t		srdatalen;

	if (prtcp->rtcp_type != RTCP_SR) 
		return ERROR;
 
/*	psr = (struct sr *) heap_alloc(sizeof(struct sr));
	prtcp->rtcp_data = psr;
	memset(psr, 0, sizeof(struct sr));

		
	psr->sr_ssrc = netbuf_fwd_read_u32(udpnb);
	psr->sr_intts = netbuf_fwd_read_u32(udpnb);
	psr->sr_fracts = netbuf_fwd_read_u32(udpnb);
	psr->sr_rtpts = netbuf_fwd_read_u32(udpnb);
	psr->sr_packets = netbuf_fwd_read_u32(udpnb);
	psr->sr_octets = netbuf_fwd_read_u32(udpnb);
*/
	ssrc = netbuf_fwd_read_u32(udpnb);
/*	
	srdatalen = RTCP_LENGTH_BYTE(prtcp)-RTCP_HEADERSZ-RTCP_SRSZ;
	if(srdatalen)
	{
		psr->sr_rblock = heap_alloc(srdatalen);
		netbuf_fwd_read_mem(udpnb,psr->sr_rblock,srdatalen);
	}
	else
		psr->srblock = NULL;
*/		        
	pstm = rtpgetstream(psn, ssrc);

	if (pstm == NULL)
		if ((pstm = rtpnewstream(psn, ssrc)) == NULL)
			return ERROR;

	if (!RTP_INACTIVE(pstm->stm_inactive))
		pstm->stm_inactive = 0;
	else {
		rtpreleasestream(psn, pstm);
		return OK;
	}

	/* 
	 * Record data needed to generate receiver report.
	 */
/*
///	pthread_mutex_lock(&pstm->stm_mutex);
	pstm->stm_lastsr=timer_get_ticks();
	///pstm->stm_lastsrts = ntohl(psr->sr_rtpts);
	pstm->stm_lastsrts=psr->sr_rtpts;
	///pstm->stm_lastntp[RTP_NTPFRAC] = ntohl(psr->sr_fracts);
	pstm->stm_lastntp[RTP_NTPFRAC] = psr->sr_fracts;
	///pstm->stm_lastntp[RTP_NTPINT] = ntohl(psr->sr_intts);
	pstm->stm_lastntp[RTP_NTPINT]= psr->sr_intts;
///	pthread_mutex_unlock(&pstm->stm_mutex);
*/

	pstm->stm_lastntp[RTP_NTPINT]= netbuf_fwd_read_u32(udpnb);
	pstm->stm_lastntp[RTP_NTPFRAC] = netbuf_fwd_read_u32(udpnb);
	pstm->stm_lastsrts = netbuf_fwd_read_u32(udpnb);
	pstm->stm_sdpackets = netbuf_fwd_read_u32(udpnb);
	pstm->stm_sdoctets = netbuf_fwd_read_u32(udpnb);
	/*
	 * Post an event with the sender hreport as data.
	 */
/*
	rtppostevent(psn, EVENT_RTCP_SR, pstm->stm_ssrc,
		     (char *) prtcp, RTCP_LENGTH_BYTE(prtcp));
*/
	rtpreleasestream(psn, pstm);
///	heap_free(psr->sr_rblock);
///	heap_free(psr);

	return OK;
}