From 6f3dd86f22ca5e4f65e1e2db4cc1ae79465ffbf7 Mon Sep 17 00:00:00 2001 From: Mark Spencer <markster@digium.com> Date: Wed, 5 May 2004 03:56:27 +0000 Subject: [PATCH] Ignore dupe packets for RFC2833 (bug #1034) git-svn-id: https://origsvn.digium.com/svn/asterisk/trunk@2895 65c4cc65-6c06-0410-ace0-fbb531ad65f3 --- rtp.c | 13 ++++++++++--- 1 file changed, 10 insertions(+), 3 deletions(-) diff --git a/rtp.c b/rtp.c index 14a2f9825f..b882744578 100755 --- a/rtp.c +++ b/rtp.c @@ -43,7 +43,7 @@ #define TYPE_DONTSEND 0x3 #define TYPE_MASK 0x3 -static int dtmftimeout = 300; /* 300 samples */ +static int dtmftimeout = 3000; /* 3000 samples */ static int rtpstart = 0; static int rtpend = 0; @@ -68,6 +68,7 @@ struct ast_rtp { unsigned int lastrxts; unsigned int lastividtimestamp; unsigned int lastovidtimestamp; + unsigned int lasteventseqn; int lasttxformat; int lastrxformat; int dtmfcount; @@ -449,11 +450,17 @@ struct ast_frame *ast_rtp_read(struct ast_rtp *rtp) // This is special in-band data that's not one of our codecs if (rtpPT.code == AST_RTP_DTMF) { /* It's special -- rfc2833 process it */ - f = process_rfc2833(rtp, rtp->rawdata + AST_FRIENDLY_OFFSET + hdrlen, res - hdrlen); + if (rtp->lasteventseqn <= seqno) { + f = process_rfc2833(rtp, rtp->rawdata + AST_FRIENDLY_OFFSET + hdrlen, res - hdrlen); + rtp->lasteventseqn = seqno; + } if (f) return f; else return &null_frame; } else if (rtpPT.code == AST_RTP_CISCO_DTMF) { /* It's really special -- process it the Cisco way */ - f = process_cisco_dtmf(rtp, rtp->rawdata + AST_FRIENDLY_OFFSET + hdrlen, res - hdrlen); + if (rtp->lasteventseqn <= seqno) { + f = process_cisco_dtmf(rtp, rtp->rawdata + AST_FRIENDLY_OFFSET + hdrlen, res - hdrlen); + rtp->lasteventseqn = seqno; + } if (f) return f; else return &null_frame; } else if (rtpPT.code == AST_RTP_CN) { /* Comfort Noise */ -- GitLab