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cccombiner: implement update_src_caps

Browse source 
It is necessary to implement this vmethod, as when the src pad
is marked as reconfigure, the base class will reset to src caps,
and the default update_src_caps simply queries the caps allowed
downstream without taking into account the caps set by
gst_aggregator_set_src_caps.
This commit is contained in:
Mathieu Duponchelle 2019-02-28 17:24:56 +01:00 committed by Mathieu Duponchelle
parent 4b8e3b215a
commit 74d281fbc2
2 changed files with 20 additions and 1 deletions
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20
ext/closedcaption/gstcccombiner.c
View file

@ -73,6 +73,7 @@ gst_cc_combiner_finalize (GObject * object)
g_array_unref (self->current_frame_captions);
self->current_frame_captions = NULL;
gst_caps_replace (&self->video_caps, NULL);
G_OBJECT_CLASS (parent_class)->finalize (object);
}
@ -353,7 +354,7 @@ gst_cc_combiner_sink_event (GstAggregator * aggregator,
&self->video_fps_d))
self->video_fps_n = self->video_fps_d = 0;
gst_aggregator_set_src_caps (aggregator, caps);
self->video_caps = gst_caps_ref (caps);
}
break;
@ -375,6 +376,7 @@ gst_cc_combiner_stop (GstAggregator * aggregator)
self->current_video_running_time = self->current_video_running_time_end =
GST_CLOCK_TIME_NONE;
gst_buffer_replace (&self->current_video_buffer, NULL);
gst_caps_replace (&self->video_caps, NULL);
g_array_set_size (self->current_frame_captions, 0);
self->current_caption_type = GST_VIDEO_CAPTION_TYPE_UNKNOWN;
@ -421,6 +423,21 @@ gst_cc_combiner_create_new_pad (GstAggregator * aggregator,
return agg_pad;
}
static GstFlowReturn
gst_cc_combiner_update_src_caps (GstAggregator * agg,
GstCaps * caps, GstCaps ** ret)
{
GstFlowReturn res = GST_AGGREGATOR_FLOW_NEED_DATA;
GstCCCombiner *self = GST_CCCOMBINER (agg);
if (self->video_caps) {
*ret = gst_caps_intersect (caps, self->video_caps);
res = GST_FLOW_OK;
}
return res;
}
static void
gst_cc_combiner_class_init (GstCCCombinerClass * klass)
{
@ -452,6 +469,7 @@ gst_cc_combiner_class_init (GstCCCombinerClass * klass)
aggregator_class->flush = gst_cc_combiner_flush;
aggregator_class->create_new_pad = gst_cc_combiner_create_new_pad;
aggregator_class->sink_event = gst_cc_combiner_sink_event;
aggregator_class->update_src_caps = gst_cc_combiner_update_src_caps;
GST_DEBUG_CATEGORY_INIT (gst_cc_combiner_debug, "cccombiner",
0, "Closed Caption combiner");

1
ext/closedcaption/gstcccombiner.h
View file

@ -48,6 +48,7 @@ struct _GstCCCombiner
GstClockTime current_video_running_time;
GstClockTime current_video_running_time_end;
GstBuffer *current_video_buffer;
GstCaps *video_caps;
GArray *current_frame_captions;
GstVideoCaptionType current_caption_type;