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tsdemux: Report latency (700ms)

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This commit is contained in:
Edward Hervey 2011-11-08 20:12:50 +01:00
parent e48966ecf1
commit 99a7b0a692
1 changed files with 24 additions and 0 deletions
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24
gst/mpegtsdemux/tsdemux.c
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@ -396,6 +396,30 @@ gst_ts_demux_srcpad_query (GstPad * pad, GstObject * parent, GstQuery * query)
res = FALSE;
}
break;
case GST_QUERY_LATENCY:
{
GST_DEBUG ("query latency");
res = gst_pad_peer_query (base->sinkpad, query);
if (res && base->upstream_live) {
GstClockTime min_lat, max_lat;
gboolean live;
/* According to H.222.0
Annex D.0.3 (System Time Clock recovery in the decoder)
and D.0.2 (Audio and video presentation synchronization)
We can end up with an interval of up to 700ms between valid
PCR/SCR. We therefore allow a latency of 700ms for that.
*/
gst_query_parse_latency (query, &live, &min_lat, &max_lat);
if (min_lat != -1)
min_lat += 700 * GST_MSECOND;
if (max_lat != -1)
max_lat += 700 * GST_MSECOND;
gst_query_set_latency (query, live, min_lat, max_lat);
}
}
break;
case GST_QUERY_SEEKING:
GST_DEBUG ("query seeking");
gst_query_parse_seeking (query, &format, NULL, NULL, NULL);