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Code Issues Releases Activity

avfilter/af_axcorrelate: fix integer overflow for huge segments

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This commit is contained in:
Paul B Mahol 2021-10-09 01:39:46 +02:00
parent eb22b8953c
commit d88d0370d5
1 changed files with 2 additions and 2 deletions
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4
libavfilter/af_axcorrelate.c
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@ -82,7 +82,7 @@ static float xcorrelate(const float *x, const float *y, float sumx, float sumy,
} }
num /= size; num /= size;
den = sqrtf((den0 * den1) / (size * size)); den = sqrtf((den0 * den1) / size / size);
return den <= 1e-6f ? 0.f : num / den; return den <= 1e-6f ? 0.f : num / den;
} }
@ -149,7 +149,7 @@ static int xcorrelate_fast(AVFilterContext *ctx, AVFrame *out, int available)
float num, den; float num, den;
num = num_sum[0] / size; num = num_sum[0] / size;
den = sqrtf((den_sumx[0] * den_sumy[0]) / (size * size)); den = sqrtf((den_sumx[0] * den_sumy[0]) / size / size);
dst[n] = den <= 1e-6f ? 0.f : num / den; dst[n] = den <= 1e-6f ? 0.f : num / den;