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Commit c753b56b authored by Michael Niedermayer's avatar Michael Niedermayer
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ff_convert_matrix: fix integer overflow 

Fixes CID608053
Signed-off-by: 's avatarMichael Niedermayer <michaelni@gmx.at>
parent 5537c92f
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libavcodec/mpegvideo_enc.c
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...@@ -103,7 +103,7 @@ void ff_convert_matrix(DSPContext *dsp, int (*qmat)[64], ...@@ -103,7 +103,7 @@ void ff_convert_matrix(DSPContext *dsp, int (*qmat)[64],
* 3444240 >= (1 << 36) / (x) >= 275 */ * 3444240 >= (1 << 36) / (x) >= 275 */
qmat[qscale][i] = (int)((UINT64_C(1) << (QMAT_SHIFT + 14)) / qmat[qscale][i] = (int)((UINT64_C(1) << (QMAT_SHIFT + 14)) /
(ff_aanscales[i] * qscale * quant_matrix[j])); (ff_aanscales[i] * (int64_t)qscale * quant_matrix[j]));
} }
} else { } else {
for (i = 0; i < 64; i++) { for (i = 0; i < 64; i++) {
......
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