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videomixer: Dequeue current buffer on FLUSH_STOP and don't unref NULL buffers

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... NULL buffers shouldn't really happen anymore when popping the
buffer from GstCollectPads but better check for this and print a warning.
This commit is contained in:
Sebastian Dröge 2009-12-12 16:55:13 +01:00
parent 760eaf7b2a
commit 66d3ac8fb7
1 changed files with 17 additions and 2 deletions
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19
gst/videomixer/videomixer.c
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@ -1136,6 +1136,7 @@ gst_videomixer_fill_queues (GstVideoMixer * mix)
GST_LOG_OBJECT (mix, "we need a new buffer");
buf = gst_collect_pads_peek (mix->collect, data);
if (buf) {
guint64 duration;
@ -1287,9 +1288,16 @@ gst_videomixer_update_queues (GstVideoMixer * mix)
pad->queued -= interval;
GST_LOG_OBJECT (pad, "queued now %" G_GINT64_FORMAT, pad->queued);
if (pad->queued <= 0) {
GstBuffer *buffer =
gst_collect_pads_pop (mix->collect, &mixcol->collect);
GST_LOG_OBJECT (pad, "unreffing buffer");
gst_buffer_unref (gst_collect_pads_pop (mix->collect,
&mixcol->collect));
if (buffer)
gst_buffer_unref (buffer);
else
GST_WARNING_OBJECT (pad,
"Buffer was removed by GstCollectPads in the meantime");
gst_buffer_unref (mixcol->buffer);
mixcol->buffer = NULL;
}
@ -1503,6 +1511,7 @@ gst_videomixer_src_event (GstPad * pad, GstEvent * event)
static gboolean
gst_videomixer_sink_event (GstPad * pad, GstEvent * event)
{
GstVideoMixerPad *vpad = GST_VIDEO_MIXER_PAD (pad);
GstVideoMixer *videomixer = GST_VIDEO_MIXER (gst_pad_get_parent (pad));
gboolean ret;
@ -1518,6 +1527,12 @@ gst_videomixer_sink_event (GstPad * pad, GstEvent * event)
* and downstream (using our source pad, the bastard!).
*/
videomixer->sendseg = TRUE;
/* Reset pad state after FLUSH_STOP */
if (vpad->mixcol->buffer)
gst_buffer_unref (vpad->mixcol->buffer);
vpad->mixcol->buffer = NULL;
vpad->queued = 0;
break;
case GST_EVENT_NEWSEGMENT:
videomixer->sendseg = TRUE;