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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

Michael Niedermayer committed 6 years ago

Commit 49ba1871 parent 64c59b61 file · +1 −1Browse files

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libswscale/output.c+1−1
@@ -2278,7 +2278,7 @@ yuv2gbrp16_full_X_c(SwsContext *c, const int16_t *lumFilter, · 2277 unmodified lines
22782278 A = -0x40000000;
22792279
22802280 for (j = 0; j < lumFilterSize; j++)
2281− A += alpSrc[j][i] * lumFilter[j];
2281+ A += alpSrc[j][i] * (unsigned)lumFilter[j];
22822282
22832283 A >>= 1;
22842284 A += 0x20002000;

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