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mpegtspacketizer: Use first group for handling reference pcr

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If _set_current_pcr_offset gets called after a flushing seek, we ended
up using the current group for delta calculation ... whereas we should
be using the first group to calculate shifts.

Also add an early exit if there are no changes to apply
This commit is contained in:
Edward Hervey 2014-06-11 09:38:00 +02:00
parent 0020a9344d
commit 6be887783e
1 changed files with 9 additions and 1 deletions
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10
gst/mpegtsdemux/mpegtspacketizer.c
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@ -2364,7 +2364,11 @@ mpegts_packetizer_set_current_pcr_offset (MpegTSPacketizer2 * packetizer,
pcr_offset = GSTTIME_TO_PCRTIME (offset);
group = pcrtable->current->group;
/* Pick delta from *first* group */
if (pcrtable->groups)
group = pcrtable->groups->data;
else
group = pcrtable->current->group;
GST_DEBUG ("Current group PCR %" GST_TIME_FORMAT " (offset %"
G_GUINT64_FORMAT " pcr_offset %" GST_TIME_FORMAT,
GST_TIME_ARGS (PCRTIME_TO_GSTTIME (group->first_pcr)),
@ -2374,6 +2378,10 @@ mpegts_packetizer_set_current_pcr_offset (MpegTSPacketizer2 * packetizer,
/* Remember the difference between previous initial pcr_offset and
* new initial pcr_offset */
delta = pcr_offset - group->pcr_offset;
if (delta == 0) {
GST_DEBUG ("No shift to apply");
return;
}
GST_DEBUG ("Shifting groups by %" GST_TIME_FORMAT
" for new initial pcr_offset %" GST_TIME_FORMAT,
GST_TIME_ARGS (PCRTIME_TO_GSTTIME (delta)), GST_TIME_ARGS (offset));