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videorate: Do not loop forever pushing first buffer when variable framerate

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In the case the framerate is variable (represented by framerate=0/1),
we currently end up loop pushing the first buffer and then recompute
diff1 and diff2 without updating the videorate->next_ts at all
leading to infinitely looping pushing that first buffer.

In the case of variable framerate, we should just compute the next_ts
as previous_pts + previous_duration.

https://bugzilla.gnome.org/show_bug.cgi?id=734424
This commit is contained in:
Thibault Saunier 2014-12-09 11:31:30 +01:00 committed by Nicolas Dufresne
parent 0ac3ad0abb
commit 1cda538e00
1 changed files with 8 additions and 0 deletions
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8
gst/videorate/gstvideorate.c
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@ -615,6 +615,8 @@ gst_video_rate_flush_prev (GstVideoRate * videorate, gboolean duplicate)
videorate->to_rate_denominator * GST_SECOND,
videorate->to_rate_numerator);
GST_BUFFER_DURATION (outbuf) = videorate->next_ts - push_ts;
} else if (GST_CLOCK_TIME_IS_VALID (GST_BUFFER_DURATION (outbuf))) {
videorate->next_ts = GST_BUFFER_PTS (outbuf) + GST_BUFFER_DURATION (outbuf);
}
/* We do not need to update time in VFR (variable frame rate) mode */
@ -1126,6 +1128,12 @@ gst_video_rate_transform_ip (GstBaseTransform * trans, GstBuffer * buffer)
GST_TIME_ARGS (diff1), GST_TIME_ARGS (diff2),
GST_TIME_ARGS (videorate->next_ts));
if (!GST_BUFFER_DURATION_IS_VALID (videorate->prevbuf) &&
intime > prevtime) {
/* Make sure that we have a duration for previous buffer */
GST_BUFFER_DURATION (videorate->prevbuf) = intime - prevtime;
}
/* output first one when its the best */
if (diff1 <= diff2) {
GstFlowReturn r;