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adaptivedemux: Handle instant rate change requests directly

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Downstream demuxers will first send seek events upstream to us.
Do the right thing with instant rate change requests by handling them
immediately.
This commit is contained in:
Jan Schmidt 2020-03-18 12:30:51 +11:00 committed by GStreamer Merge Bot
parent 1c79b39896
commit 46f994871f
1 changed files with 42 additions and 7 deletions
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49
gst-libs/gst/adaptivedemux/gstadaptivedemux.c
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@ -1560,13 +1560,6 @@ gst_adaptive_demux_handle_seek_event (GstAdaptiveDemux * demux, GstPad * pad,
GST_API_LOCK (demux);
GST_MANIFEST_LOCK (demux);
if (!gst_adaptive_demux_can_seek (demux)) {
GST_MANIFEST_UNLOCK (demux);
GST_API_UNLOCK (demux);
gst_event_unref (event);
return FALSE;
}
gst_event_parse_seek (event, &rate, &format, &flags, &start_type, &start,
&stop_type, &stop);
@ -1589,6 +1582,48 @@ gst_adaptive_demux_handle_seek_event (GstAdaptiveDemux * demux, GstPad * pad,
seqnum = gst_event_get_seqnum (event);
if (flags & GST_SEEK_FLAG_INSTANT_RATE_CHANGE) {
/* For instant rate seeks, reply directly and update
* our segment so the new rate is reflected in any future
* fragments */
GstEvent *ev;
/* instant rate change only supported if direction does not change. All
* other requirements are already checked before creating the seek event
* but let's double-check here to be sure */
if ((demux->segment.rate > 0 && rate < 0) ||
(demux->segment.rate < 0 && rate > 0) ||
start_type != GST_SEEK_TYPE_NONE ||
stop_type != GST_SEEK_TYPE_NONE || (flags & GST_SEEK_FLAG_FLUSH)) {
GST_ERROR_OBJECT (demux,
"Instant rate change seeks only supported in the "
"same direction, without flushing and position change");
GST_MANIFEST_UNLOCK (demux);
GST_API_UNLOCK (demux);
return FALSE;
}
ev = gst_event_new_instant_rate_change (rate / demux->segment.rate,
(GstSegmentFlags) flags);
gst_event_set_seqnum (ev, seqnum);
GST_MANIFEST_UNLOCK (demux);
ret = gst_adaptive_demux_push_src_event (demux, ev);
GST_API_UNLOCK (demux);
gst_event_unref (event);
return ret;
}
if (!gst_adaptive_demux_can_seek (demux)) {
GST_MANIFEST_UNLOCK (demux);
GST_API_UNLOCK (demux);
gst_event_unref (event);
return FALSE;
}
if (gst_adaptive_demux_is_live (demux)) {
gint64 range_start, range_stop;
gboolean changed = FALSE;