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tsdemux: Send instant-rate-change event if requested in the SEEK event

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Convert instant-rate-change seek events into a downstream
instant-rate-change event and skip any further local seek handling.
This commit is contained in:
Jan Schmidt 2018-11-30 05:18:42 +11:00 committed by GStreamer Merge Bot
parent 71cf93c361
commit b9ebd885ff
1 changed files with 28 additions and 2 deletions
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30
gst/mpegtsdemux/mpegtsbase.c
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@ -1692,7 +1692,7 @@ mpegts_base_handle_seek_event (MpegTSBase * base, GstPad * pad,
MpegTSBaseClass *klass = GST_MPEGTS_BASE_GET_CLASS (base); MpegTSBaseClass *klass = GST_MPEGTS_BASE_GET_CLASS (base);
GstFlowReturn ret = GST_FLOW_ERROR; GstFlowReturn ret = GST_FLOW_ERROR;
gdouble rate; gdouble rate;
gboolean flush; gboolean flush, instant_rate_change;
GstFormat format; GstFormat format;
GstSeekFlags flags; GstSeekFlags flags;
GstSeekType start_type, stop_type; GstSeekType start_type, stop_type;
@ -1758,7 +1758,33 @@ mpegts_base_handle_seek_event (MpegTSBase * base, GstPad * pad,
" stop: %" GST_TIME_FORMAT, rate, GST_TIME_ARGS (start), " stop: %" GST_TIME_FORMAT, rate, GST_TIME_ARGS (start),
GST_TIME_ARGS (stop)); GST_TIME_ARGS (stop));
flush = flags & GST_SEEK_FLAG_FLUSH; flush = ! !(flags & GST_SEEK_FLAG_FLUSH);
instant_rate_change = ! !(flags & GST_SEEK_FLAG_INSTANT_RATE_CHANGE);
/* Directly send the instant-rate-change event here before taking the
* stream-lock so that it can be applied as soon as possible */
if (base->mode != BASE_MODE_PUSHING && instant_rate_change) {
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 ((rate > 0 && base->out_segment.rate < 0) ||
(rate < 0 && base->out_segment.rate > 0) ||
start_type != GST_SEEK_TYPE_NONE ||
stop_type != GST_SEEK_TYPE_NONE || flush) {
GST_ERROR_OBJECT (base,
"Instant rate change seeks only supported in the "
"same direction, without flushing and position change");
return FALSE;
}
ev = gst_event_new_instant_rate_change (rate / base->out_segment.rate,
(GstSegmentFlags) (flags));
gst_event_set_seqnum (ev, GST_EVENT_SEQNUM (event));
GST_MPEGTS_BASE_GET_CLASS (base)->push_event (base, ev);
return TRUE;
}
/* stop streaming, either by flushing or by pausing the task */ /* stop streaming, either by flushing or by pausing the task */
base->mode = BASE_MODE_SEEKING; base->mode = BASE_MODE_SEEKING;