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avcodec/dovi_rpuenc: avoid division by zero
Fixes: https://trac.ffmpeg.org/ticket/10985
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@ -245,7 +245,7 @@ static inline void put_se_coef(PutBitContext *pb, const AVDOVIRpuDataHeader *hdr
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static int av_q2den(AVRational q, int den)
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static int av_q2den(AVRational q, int den)
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{
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{
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if (q.den == den)
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if (!q.den || q.den == den)
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return q.num;
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return q.num;
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q = av_mul_q(q, av_make_q(den, 1));
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q = av_mul_q(q, av_make_q(den, 1));
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return (q.num + (q.den >> 1)) / q.den;
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return (q.num + (q.den >> 1)) / q.den;
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