avfilter/af_axcorrelate: fix integer overflow for huge segments
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@ -82,7 +82,7 @@ static float xcorrelate(const float *x, const float *y, float sumx, float sumy,
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}
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num /= size;
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den = sqrtf((den0 * den1) / (size * size));
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den = sqrtf((den0 * den1) / size / size);
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return den <= 1e-6f ? 0.f : num / den;
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}
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@ -149,7 +149,7 @@ static int xcorrelate_fast(AVFilterContext *ctx, AVFrame *out, int available)
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float num, den;
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num = num_sum[0] / size;
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den = sqrtf((den_sumx[0] * den_sumy[0]) / (size * size));
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den = sqrtf((den_sumx[0] * den_sumy[0]) / size / size);
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dst[n] = den <= 1e-6f ? 0.f : num / den;
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