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First pass at handling RTP header extension bit

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git-svn-id: https://origsvn.digium.com/svn/asterisk/trunk@3683 65c4cc65-6c06-0410-ace0-fbb531ad65f3
This commit is contained in:
Mark Spencer
2004-08-31 00:16:28 +00:00
parent 5259155e52
commit b48987922c
1 changed files with 7 additions and 0 deletions
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7
rtp.c
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@@ -396,6 +396,7 @@ struct ast_frame *ast_rtp_read(struct ast_rtp *rtp)
int payloadtype;
int hdrlen = 12;
int mark;
int ext;
char iabuf[INET_ADDRSTRLEN];
unsigned int timestamp;
unsigned int *rtpheader;
@@ -442,8 +443,14 @@ struct ast_frame *ast_rtp_read(struct ast_rtp *rtp)
seqno = ntohl(rtpheader[0]);
payloadtype = (seqno & 0x7f0000) >> 16;
mark = seqno & (1 << 23);
ext = seqno & (1 << 28);
seqno &= 0xffff;
timestamp = ntohl(rtpheader[1]);
if (ext) {
/* RTP Extension present */
hdrlen += 4;
hdrlen += (rtpheader[3] & 0xffff) << 2;
}
#if 0
printf("Got RTP packet from %s:%d (type %d, seq %d, ts %d, len = %d)\n", ast_inet_ntoa(iabuf, sizeof(iabuf), sin.sin_addr), ntohs(sin.sin_port), payloadtype, seqno, timestamp,res - hdrlen);