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videoaggregatorpad: implement skip_buffer

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Skip buffers from sources with a framerate higher than the output
framerate.

https://bugzilla.gnome.org/show_bug.cgi?id=781928
This commit is contained in:
Mathieu Duponchelle 2017-12-28 12:15:21 +01:00
parent 944f74b834
commit a4f609f847
1 changed files with 24 additions and 0 deletions
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24
gst-libs/gst/video/gstvideoaggregator.c
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@ -219,6 +219,28 @@ gst_video_aggregator_pad_set_info (GstVideoAggregatorPad * pad,
return TRUE; return TRUE;
} }
static gboolean
gst_video_aggregator_pad_skip_buffer (GstAggregatorPad * aggpad,
GstAggregator * agg, GstBuffer * buffer)
{
gboolean ret = FALSE;
if (agg->segment.position != GST_CLOCK_TIME_NONE
&& GST_BUFFER_DURATION (buffer) != GST_CLOCK_TIME_NONE) {
GstClockTime start_time =
gst_segment_to_running_time (&aggpad->segment, GST_FORMAT_TIME,
GST_BUFFER_PTS (buffer));
GstClockTime end_time = start_time + GST_BUFFER_DURATION (buffer);
GstClockTime output_start_running_time =
gst_segment_to_running_time (&agg->segment, GST_FORMAT_TIME,
agg->segment.position);
ret = end_time < output_start_running_time;
}
return ret;
}
static void static void
gst_video_aggregator_pad_finalize (GObject * o) gst_video_aggregator_pad_finalize (GObject * o)
{ {
@ -324,6 +346,8 @@ gst_video_aggregator_pad_class_init (GstVideoAggregatorPadClass * klass)
g_type_class_add_private (klass, sizeof (GstVideoAggregatorPadPrivate)); g_type_class_add_private (klass, sizeof (GstVideoAggregatorPadPrivate));
aggpadclass->flush = GST_DEBUG_FUNCPTR (_flush_pad); aggpadclass->flush = GST_DEBUG_FUNCPTR (_flush_pad);
aggpadclass->skip_buffer =
GST_DEBUG_FUNCPTR (gst_video_aggregator_pad_skip_buffer);
klass->set_info = GST_DEBUG_FUNCPTR (gst_video_aggregator_pad_set_info); klass->set_info = GST_DEBUG_FUNCPTR (gst_video_aggregator_pad_set_info);
klass->prepare_frame = klass->prepare_frame =
GST_DEBUG_FUNCPTR (gst_video_aggregator_pad_prepare_frame); GST_DEBUG_FUNCPTR (gst_video_aggregator_pad_prepare_frame);