hust_rtpgetstream.c

来自「实现基于ip2022的MPEG2 TS的IP组播接收」· C语言 代码 · 共 35 行

/*-------------------------------------------------------------------------
 * rtpgetstream.c - rtpgetstream
 *-------------------------------------------------------------------------
 */

#include "hust_rtp.h"
#include "hust_linux.h"
////#include "hust_rtcp.h"
#include "hust_hash.h"

/*------------------------------------------------------------------------
 * rtpgetstream - look up a stream struct by SSRC ID and incr its refcnt
 *------------------------------------------------------------------------
 */
struct stream *
rtpgetstream(struct session *psn, ssrc_t ssrc)
{

	struct stream *pstm;

	///if (pthread_mutex_lock(&psn->sn_getstreammutex) != 0)
	///	return NULL;


  	pstm = (struct stream *) htget(psn->sn_ssrcs, ssrc);
	if (pstm == NULL || pstm->stm_zombie == TRUE) {
		////pthread_mutex_unlock(&psn->sn_getstreammutex);
		return NULL;
	}
	pstm->stm_refcnt++;
	////pthread_mutex_unlock(&psn->sn_getstreammutex);
  
	return pstm;
}