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swscale/output: Fix integer overflow in alpha computation in yuv2gbrp16_full_X_c()
Fixes: signed integer overflow: 524280 * 4432 cannot be represented in type 'int'
Fixes: ticket8322
Found-by: Suhwan
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
(cherry picked from commit 49ba1879ad
)
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
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@ -2284,7 +2284,7 @@ yuv2gbrp16_full_X_c(SwsContext *c, const int16_t *lumFilter,
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A = -0x40000000;
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for (j = 0; j < lumFilterSize; j++)
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A += alpSrc[j][i] * lumFilter[j];
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A += alpSrc[j][i] * (unsigned)lumFilter[j];
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A >>= 1;
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A += 0x20002000;
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