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videorate: Mark duplicated frames with the GAP flag

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We currently don't use the GAP flag for video and the docs say
that this is for buffers, that have been created to fill a gap
and contains neutral data. For video this is the previous frame.

This information can be used by encoders to encode the duplicated
frames more efficiently. See bug #627459.
This commit is contained in:
Sebastian Dröge 2010-08-20 12:03:44 +02:00
parent cd5527fa4e
commit ac59769604
1 changed files with 11 additions and 4 deletions
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15
gst/videorate/gstvideorate.c
View file

@ -439,7 +439,7 @@ gst_video_rate_init (GstVideoRate * videorate, GstVideoRateClass * klass)
/* flush the oldest buffer */
static GstFlowReturn
gst_video_rate_flush_prev (GstVideoRate * videorate)
gst_video_rate_flush_prev (GstVideoRate * videorate, gboolean duplicate)
{
GstFlowReturn res;
GstBuffer *outbuf;
@ -461,6 +461,11 @@ gst_video_rate_flush_prev (GstVideoRate * videorate)
} else
GST_BUFFER_FLAG_UNSET (outbuf, GST_BUFFER_FLAG_DISCONT);
if (duplicate)
GST_BUFFER_FLAG_SET (outbuf, GST_BUFFER_FLAG_GAP);
else
GST_BUFFER_FLAG_UNSET (outbuf, GST_BUFFER_FLAG_GAP);
/* this is the timestamp we put on the buffer */
push_ts = videorate->next_ts;
@ -546,7 +551,7 @@ gst_video_rate_event (GstPad * pad, GstEvent * event)
videorate->next_ts - videorate->segment.accum
< videorate->segment.stop)
|| count < 1)) {
gst_video_rate_flush_prev (videorate);
gst_video_rate_flush_prev (videorate, count > 0);
count++;
}
if (count > 1) {
@ -575,7 +580,7 @@ gst_video_rate_event (GstPad * pad, GstEvent * event)
case GST_EVENT_EOS:
/* flush last queued frame */
GST_DEBUG_OBJECT (videorate, "Got EOS");
gst_video_rate_flush_prev (videorate);
gst_video_rate_flush_prev (videorate, FALSE);
break;
case GST_EVENT_FLUSH_STOP:
/* also resets the segment */
@ -771,7 +776,9 @@ gst_video_rate_chain (GstPad * pad, GstBuffer * buffer)
count++;
/* on error the _flush function posted a warning already */
if ((res = gst_video_rate_flush_prev (videorate)) != GST_FLOW_OK) {
if ((res =
gst_video_rate_flush_prev (videorate,
count > 1)) != GST_FLOW_OK) {
gst_buffer_unref (buffer);
goto done;
}