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smart-video-mixer: Handle segment updates

Browse source 
We were basically ignoring any segment update which could potentially
lead to setting a wrong stream time leading to wrong alpha value
being used.
This commit is contained in:
Thibault Saunier 2019-10-22 11:31:04 +02:00
parent 6caf9b0a50
commit d58d992674
1 changed files with 25 additions and 14 deletions
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39
ges/ges-smart-video-mixer.c
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@ -155,6 +155,29 @@ destroy_pad (PadInfos * infos)
g_slice_free (PadInfos, infos);
}
static gboolean
ges_smart_mixer_sinkpad_event_func (GstPad * pad, GstObject * parent,
GstEvent * event)
{
switch (GST_EVENT_TYPE (event)) {
case GST_EVENT_SEGMENT:
{
const GstSegment *seg;
gst_event_parse_segment (event, &seg);
GST_OBJECT_LOCK (pad);
((GESSmartMixerPad *) pad)->segment = *seg;
GST_OBJECT_UNLOCK (pad);
break;
}
default:
break;
}
return gst_pad_event_default (pad, parent, event);
}
GstPad *
ges_smart_mixer_get_mixer_pad (GESSmartMixer * self, GstPad ** mixerpad)
{
@ -198,20 +221,6 @@ parse_metadata (GstPad * mixer_pad, GstPadProbeInfo * info,
gdouble transalpha;
GST_OBJECT_LOCK (ghost);
if (ghost->segment.format == GST_FORMAT_UNDEFINED) {
const GstSegment *seg;
GstEvent *segev;
GST_OBJECT_UNLOCK (ghost);
segev = gst_pad_get_sticky_event (GST_PAD (ghost), GST_EVENT_SEGMENT, 0);
gst_event_parse_segment (segev, &seg);
gst_event_unref (segev);
GST_OBJECT_LOCK (ghost);
ghost->segment = *seg;
}
stream_time = gst_segment_to_stream_time (&ghost->segment, GST_FORMAT_TIME,
GST_BUFFER_PTS (info->data));
GST_OBJECT_UNLOCK (ghost);
@ -285,6 +294,8 @@ _request_new_pad (GstElement * element, GstPadTemplate * templ,
infos->probe_id =
gst_pad_add_probe (infos->mixer_pad, GST_PAD_PROBE_TYPE_BUFFER,
(GstPadProbeCallback) parse_metadata, ghost, NULL);
gst_pad_set_event_function (GST_PAD (ghost),
ges_smart_mixer_sinkpad_event_func);
LOCK (self);
g_hash_table_insert (self->pads_infos, ghost, infos);