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rtpjitterbuffer: Calculate receive time if we don't have any

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This is required to properly schedule packet loss timers and make
sure all our calculations work properly.

https://bugzilla.gnome.org/show_bug.cgi?id=749536
This commit is contained in:
Sebastian Dröge 2015-07-08 17:02:05 +03:00
parent 243730ced4
commit 4e23481d9f
1 changed files with 31 additions and 2 deletions
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33
gst/rtpmanager/gstrtpjitterbuffer.c
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@ -2106,9 +2106,10 @@ calculate_expected (GstRtpJitterBuffer * jitterbuffer, guint32 expected,
"dts %" GST_TIME_FORMAT ", last %" GST_TIME_FORMAT,
GST_TIME_ARGS (dts), GST_TIME_ARGS (priv->last_in_dts));
/* Nothing to be done here if we don't get packet receive times */
if (dts == GST_CLOCK_TIME_NONE)
if (dts == GST_CLOCK_TIME_NONE) {
GST_WARNING_OBJECT (jitterbuffer, "Have no DTS");
return;
}
/* the total duration spanned by the missing packets */
if (dts >= priv->last_in_dts)
@ -2446,6 +2447,34 @@ gst_rtp_jitter_buffer_chain (GstPad * pad, GstObject * parent,
GST_DEBUG_OBJECT (jitterbuffer, "expected #%d, got #%d, gap of %d",
expected, seqnum, gap);
/* Try to calculate a DTS if we have none, based on
* whatever the jitterbuffer currently knows */
if (dts == GST_CLOCK_TIME_NONE) {
guint64 base_rtptime, base_time;
guint32 clock_rate;
guint64 last_rtptime;
guint64 ext_rtptime;
GstClockTime gst_send_diff;
guint64 send_diff;
rtp_jitter_buffer_get_sync (jitterbuffer->priv->jbuf, &base_rtptime,
&base_time, &clock_rate, &last_rtptime);
if (base_rtptime != -1 && clock_rate != -1 && base_time != -1) {
ext_rtptime = gst_rtp_buffer_ext_timestamp (&last_rtptime, rtptime);
if (ext_rtptime > base_rtptime)
send_diff = ext_rtptime - base_rtptime;
else
send_diff = 0;
gst_send_diff =
gst_util_uint64_scale_int (send_diff, GST_SECOND, clock_rate);
dts = base_time + gst_send_diff;
pts = dts;
}
}
if (G_LIKELY (gap == 0)) {
/* packet is expected */
calculate_packet_spacing (jitterbuffer, rtptime, dts);