From b48987922cbc1732af7990675b1b899739efaf92 Mon Sep 17 00:00:00 2001 From: Mark Spencer Date: Tue, 31 Aug 2004 00:16:28 +0000 Subject: First pass at handling RTP header extension bit git-svn-id: https://origsvn.digium.com/svn/asterisk/trunk@3683 65c4cc65-6c06-0410-ace0-fbb531ad65f3 --- rtp.c | 7 +++++++ 1 file changed, 7 insertions(+) diff --git a/rtp.c b/rtp.c index 51b500a96..02b30bc6f 100755 --- a/rtp.c +++ b/rtp.c @@ -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); -- cgit v1.2.3