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rtpjitterbuffer: When request retransmissions for future packets, consider the packet spacing in the extra delay

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We now take the maximum of 2*jitter and 0.5*packet_spacing for the extra
delay. If jitter is very low, this should prevent unnecessary retransmission
requests to some degree.

https://bugzilla.gnome.org/show_bug.cgi?id=748041
This commit is contained in:
Sebastian Dröge 2015-04-22 20:24:20 +02:00
parent 3fe8ceff14
commit edcc5be297
1 changed files with 6 additions and 4 deletions
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10
gst/rtpmanager/gstrtpjitterbuffer.c
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@ -1889,11 +1889,13 @@ get_rtx_delay (GstRtpJitterBufferPrivate * priv)
GstClockTime delay; GstClockTime delay;
if (priv->rtx_delay == -1) { if (priv->rtx_delay == -1) {
if (priv->avg_jitter == 0) if (priv->avg_jitter == 0 && priv->packet_spacing == 0) {
delay = DEFAULT_AUTO_RTX_DELAY; delay = DEFAULT_AUTO_RTX_DELAY;
else } else {
/* jitter is in nanoseconds, 2x jitter is a good margin */ /* jitter is in nanoseconds, maximum of 2x jitter and half the
delay = priv->avg_jitter * 2; * packet spacing is a good margin */
delay = MAX (priv->avg_jitter * 2, priv->packet_spacing / 2);
}
} else { } else {
delay = priv->rtx_delay * GST_MSECOND; delay = priv->rtx_delay * GST_MSECOND;
} }