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avfilter/vf_pad: fix req_end

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Fixes out of array accesses
Fixes Ticket3190

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
This commit is contained in:
Michael Niedermayer 2013-12-03 04:08:37 +01:00
parent 4d0ac9aee9
commit 0cc5011f9a
1 changed files with 1 additions and 1 deletions
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2
libavfilter/vf_pad.c
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@ -251,7 +251,7 @@ static int buffer_needs_copy(PadContext *s, AVFrame *frame, AVBufferRef *buf)
(s->y >> vsub) * frame->linesize[planes[i]];
ptrdiff_t req_end = ((s->w - s->x - frame->width) >> hsub) *
s->draw.pixelstep[planes[i]] +
(s->y >> vsub) * frame->linesize[planes[i]];
((s->h - s->y - frame->height) >> vsub) * frame->linesize[planes[i]];
if (frame->linesize[planes[i]] < (s->w >> hsub) * s->draw.pixelstep[planes[i]])
return 1;