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avutil/imgutils: correctly check for negative SAR components 

These could trigger assert failures previously

Found-by: Andreas Cadhalpun <Andreas.Cadhalpun@googlemail.com>
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
This commit is contained in:
Michael Niedermayer 2015-02-28 21:57:11 +01:00
parent 5f1ea0bfc5
commit 5705dc5276
1 changed files with 1 additions and 1 deletions
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2
libavutil/imgutils.c
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@ -245,7 +245,7 @@ int av_image_check_sar(unsigned int w, unsigned int h, AVRational sar)
{
int64_t scaled_dim;
if (!sar.den)
if (sar.den <= 0 || sar.num < 0)
return AVERROR(EINVAL);
if (!sar.num || sar.num == sar.den)