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avfilter/vf_psnr: avoid 64bit arithmetic in the inner loop
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
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@ -94,8 +94,10 @@ void compute_images_mse(PSNRContext *s,
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uint64_t m = 0;
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uint64_t m = 0;
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for (i = 0; i < outh; i++) {
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for (i = 0; i < outh; i++) {
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int m2 = 0;
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for (j = 0; j < outw; j++)
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for (j = 0; j < outw; j++)
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m += pow2(main_line[j] - ref_line[j]);
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m2 += pow2(main_line[j] - ref_line[j]);
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m += m2;
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ref_line += ref_linesize;
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ref_line += ref_linesize;
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main_line += main_linesize;
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main_line += main_linesize;
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}
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}
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