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-rw-r--r--gst/rtpmanager/gstrtpjitterbuffer.c10
1 files changed, 8 insertions, 2 deletions
diff --git a/gst/rtpmanager/gstrtpjitterbuffer.c b/gst/rtpmanager/gstrtpjitterbuffer.c
index df68e247..c62a6c50 100644
--- a/gst/rtpmanager/gstrtpjitterbuffer.c
+++ b/gst/rtpmanager/gstrtpjitterbuffer.c
@@ -1117,8 +1117,13 @@ again:
GST_TIME_ARGS (out_time), GST_TIME_ARGS (priv->last_out_time));
/* interpollate between the current time and the last time based on
* number of packets we are missing, this is the estimated duration
- * for the missing packet based on equidistant packet spacing. */
- duration = (out_time - priv->last_out_time) / (gap + 1);
+ * for the missing packet based on equidistant packet spacing. Also make
+ * sure we never go negative. */
+ if (out_time > priv->last_out_time)
+ duration = (out_time - priv->last_out_time) / (gap + 1);
+ else
+ goto lost;
+
GST_DEBUG_OBJECT (jitterbuffer, "duration %" GST_TIME_FORMAT,
GST_TIME_ARGS (duration));
/* add this duration to the timestamp of the last packet we pushed */
@@ -1176,6 +1181,7 @@ again:
goto again;
}
+ lost:
/* we now timed out, this means we lost a packet or finished synchronizing
* on the first buffer. */
if (gap > 0) {