From: Sebastian Dröge <sebastian@centricular.com>
Date: Mon, 18 May 2015 14:08:53 +0000 (+0300)
Subject: rtpsource: Allow sequence number wraparound during probation
X-Git-Tag: 1.19.3~509^2~3623
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=1974b24ef4572ef30eb5556456a7dd29f74f4699;p=platform%2Fupstream%2Fgstreamer.git

rtpsource: Allow sequence number wraparound during probation
---

diff --git a/gst/rtpmanager/rtpsource.c b/gst/rtpmanager/rtpsource.c
index 2e984e3..0ef9e1f 100644
--- a/gst/rtpmanager/rtpsource.c
+++ b/gst/rtpmanager/rtpsource.c
@@ -1017,14 +1017,19 @@ update_receiver_stats (RTPSource * src, RTPPacketInfo * pinfo)
 
   /* if we are still on probation, check seqnum */
   if (src->curr_probation) {
-    expected = src->stats.max_seq + 1;
+    expected = (src->stats.max_seq + 1) & (RTP_SEQ_MOD - 1);
 
     /* when in probation, we require consecutive seqnums */
     if (seqnr == expected) {
       /* expected packet */
       GST_DEBUG ("probation: seqnr %d == expected %d", seqnr, expected);
       src->curr_probation--;
+      if (seqnr < stats->max_seq) {
+        /* sequence number wrapped - count another 64K cycle. */
+        stats->cycles += RTP_SEQ_MOD;
+      }
       src->stats.max_seq = seqnr;
+
       if (src->curr_probation == 0) {
         GST_DEBUG ("probation done!");
         init_seq (src, seqnr);