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avcodec/mpegaudioenc: prevent overflow in fixed point code 

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
This commit is contained in:
Michael Niedermayer 2013-11-17 21:14:15 +01:00
parent b382d09d29
commit 9f630e8346
1 changed files with 2 additions and 0 deletions
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2
libavcodec/mpegaudioenc.c
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@ -704,6 +704,8 @@ static void encode_frame(MpegAudioContext *s,
q1 = sample >> shift;
q1 = (q1 * mult) >> P;
q[m] = ((q1 + (1 << P)) * steps) >> (P + 1);
if (q[m] < 0)
q[m] = 0;
}
#endif
if (q[m] >= steps)