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streamsynchronizer: Correctly calculate group start times in reverse playback mode

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We have to calculate from the segment.stop, not the segment.start, as
playback goes from stop to start. This fix works around another race
condition in streamsynchronizer in my testcase.

See https://bugzilla.gnome.org/show_bug.cgi?id=771479
This commit is contained in:
Sebastian Dröge 2016-09-20 15:12:22 -04:00
parent 0ba25ad43b
commit 0c151f6bb2
1 changed files with 27 additions and 9 deletions
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36
gst/playback/gststreamsynchronizer.c
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@ -373,18 +373,31 @@ gst_stream_synchronizer_sink_event (GstPad * pad, GstObject * parent,
ostream->wait = FALSE;
if (ostream->segment.format == GST_FORMAT_TIME) {
stop_running_time =
gst_segment_to_running_time (&ostream->segment,
GST_FORMAT_TIME, ostream->segment.stop);
if (ostream->segment.rate > 0)
stop_running_time =
gst_segment_to_running_time (&ostream->segment,
GST_FORMAT_TIME, ostream->segment.stop);
else
stop_running_time =
gst_segment_to_running_time (&ostream->segment,
GST_FORMAT_TIME, ostream->segment.start);
position_running_time =
gst_segment_to_running_time (&ostream->segment,
GST_FORMAT_TIME, ostream->segment.position);
position_running_time =
MAX (position_running_time, stop_running_time);
position_running_time -=
gst_segment_to_running_time (&ostream->segment,
GST_FORMAT_TIME, ostream->segment.start);
if (ostream->segment.rate > 0)
position_running_time -=
gst_segment_to_running_time (&ostream->segment,
GST_FORMAT_TIME, ostream->segment.start);
else
position_running_time -=
gst_segment_to_running_time (&ostream->segment,
GST_FORMAT_TIME, ostream->segment.stop);
position_running_time = MAX (0, position_running_time);
position = MAX (position, position_running_time);
@ -497,9 +510,14 @@ gst_stream_synchronizer_sink_event (GstPad * pad, GstObject * parent,
continue;
if (ostream->segment.format == GST_FORMAT_TIME) {
start_running_time =
gst_segment_to_running_time (&ostream->segment,
GST_FORMAT_TIME, ostream->segment.start);
if (ostream->segment.rate > 0)
start_running_time =
gst_segment_to_running_time (&ostream->segment,
GST_FORMAT_TIME, ostream->segment.start);
else
start_running_time =
gst_segment_to_running_time (&ostream->segment,
GST_FORMAT_TIME, ostream->segment.stop);
new_group_start_time = MAX (new_group_start_time, start_running_time);
}