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avfilter/vf_fps: make sure the fifo is not empty before using it

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Fixes Ticket2905

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
(cherry picked from commit cdd5df8189)

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
This commit is contained in:
Michael Niedermayer
2013-09-02 04:32:23 +02:00
parent a0d13f578b
commit 0f3cdddf38
1 changed files with 1 additions and 1 deletions
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2
libavfilter/vf_fps.c
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@@ -203,7 +203,7 @@ static int filter_frame(AVFilterLink *inlink, AVFilterBufferRef *buf)
} }
/* now wait for the next timestamp */ /* now wait for the next timestamp */
if (buf->pts == AV_NOPTS_VALUE) { if (buf->pts == AV_NOPTS_VALUE || av_fifo_size(s->fifo) <= 0) {
return write_to_fifo(s->fifo, buf); return write_to_fifo(s->fifo, buf);
} }