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avcodec/tests/dct: Use 64bit in intermediate for error computation

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Fixes: CID1500284 Unintentional integer overflow

Sponsored-by: Sovereign Tech Fund
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
(cherry picked from commit 161d0aa2a8d18f1f8a01cbc4c1061eadcbe592e5)
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
This commit is contained in:
Michael Niedermayer 2024-05-17 00:46:24 +02:00
parent 4d9530afdf
commit 9e46b70436
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1 changed files with 2 additions and 2 deletions
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libavcodec/tests/dct.c
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@ -224,8 +224,8 @@ static int dct_error(const struct algo *dct, int test, int is_idct, int speed, c
v = abs(err); v = abs(err);
if (v > err_inf) if (v > err_inf)
err_inf = v; err_inf = v;
err2_matrix[i] += v * v; err2_matrix[i] += v * (int64_t)v;
err2 += v * v; err2 += v * (int64_t)v;
sysErr[i] += block[i] - block1[i]; sysErr[i] += block[i] - block1[i];
blockSumErr += v; blockSumErr += v;
if (abs(block[i]) > maxout) if (abs(block[i]) > maxout)