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Handle the CC field in the RTP header. (issue #9384 reported by DoodleHu)

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git-svn-id: https://origsvn.digium.com/svn/asterisk/branches/1.2@69992 65c4cc65-6c06-0410-ace0-fbb531ad65f3
This commit is contained in:
Joshua Colp
2007-06-19 17:00:58 +00:00
parent 6e0248318b
commit 3d1a5f71c5
1 changed files with 8 additions and 1 deletions
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9
rtp.c
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@@ -437,6 +437,7 @@ struct ast_frame *ast_rtp_read(struct ast_rtp *rtp)
int padding;
int mark;
int ext;
int cc;
int x;
char iabuf[INET_ADDRSTRLEN];
unsigned int ssrc;
@@ -497,6 +498,7 @@ struct ast_frame *ast_rtp_read(struct ast_rtp *rtp)
padding = seqno & (1 << 29);
mark = seqno & (1 << 23);
ext = seqno & (1 << 28);
cc = (seqno & 0xF000000) >> 24;
seqno &= 0xffff;
timestamp = ntohl(rtpheader[1]);
ssrc = ntohl(rtpheader[2]);
@@ -514,10 +516,15 @@ struct ast_frame *ast_rtp_read(struct ast_rtp *rtp)
res -= rtp->rawdata[AST_FRIENDLY_OFFSET + res - 1];
}
if (cc) {
/* CSRC fields present */
hdrlen += cc*4;
}
if (ext) {
/* RTP Extension present */
hdrlen += (ntohl(rtpheader[hdrlen/4]) & 0xffff) << 2;
hdrlen += 4;
hdrlen += (ntohl(rtpheader[3]) & 0xffff) << 2;
}
if (res < hdrlen) {