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properly strip incoming padded RTP frames (bug #4264)

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git-svn-id: http://svn.digium.com/svn/asterisk/trunk@5652 f38db490-d61c-443f-a65b-d21fe96a405b
This commit is contained in:
kpfleming 2005-05-14 23:41:12 +00:00
parent 22dd5e0c8d
commit 226b476d7f
1 changed files with 8 additions and 0 deletions
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8
rtp.c
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@ -429,6 +429,7 @@ struct ast_frame *ast_rtp_read(struct ast_rtp *rtp)
int version;
int payloadtype;
int hdrlen = 12;
int padding;
int mark;
int ext;
int x;
@ -482,10 +483,17 @@ struct ast_frame *ast_rtp_read(struct ast_rtp *rtp)
return &null_frame;
payloadtype = (seqno & 0x7f0000) >> 16;
padding = seqno & (1 << 29);
mark = seqno & (1 << 23);
ext = seqno & (1 << 28);
seqno &= 0xffff;
timestamp = ntohl(rtpheader[1]);
if (padding) {
/* Remove padding bytes */
res -= rtp->rawdata[AST_FRIENDLY_OFFSET + res - 1];
}
if (ext) {
/* RTP Extension present */
hdrlen += 4;