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avformat/utils: Check negative bps before shifting in ff_get_pcm_codec_id()

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Fixes: undefined shift.

Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
(cherry picked from commit 2875745d354ab0ebc4af1ebaca5c5a8d26ccdc03)

Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
This commit is contained in:
Chris Cunningham 2016-05-17 11:28:32 -07:00 committed by Michael Niedermayer
parent e5d167149d
commit 145b18ce9a
1 changed files with 1 additions and 1 deletions
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libavformat/utils.c
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@ -2833,7 +2833,7 @@ enum AVCodecID ff_codec_get_id(const AVCodecTag *tags, unsigned int tag)
enum AVCodecID ff_get_pcm_codec_id(int bps, int flt, int be, int sflags)
{
if (bps > 64U)
if (bps <= 0 || bps > 64)
return AV_CODEC_ID_NONE;
if (flt) {