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avcodec/simple_idct_template: fix integer overflow

This commit is contained in:
Paul B Mahol 2019-12-13 15:21:19 +01:00
parent bbe27890ff
commit 24424a6516
1 changed files with 1 additions and 1 deletions
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2
libavcodec/simple_idct_template.c
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@ -121,7 +121,7 @@ static inline void FUNC6(idctRowCondDC)(idctin *row, int extra_shift)
// TODO: Add DC-only support for int32_t input // TODO: Add DC-only support for int32_t input
#if IN_IDCT_DEPTH == 16 #if IN_IDCT_DEPTH == 16
#if HAVE_FAST_64BIT #if HAVE_FAST_64BIT
#define ROW0_MASK (0xffffLL << 48 * HAVE_BIGENDIAN) #define ROW0_MASK (0xffffULL << 48 * HAVE_BIGENDIAN)
if (((AV_RN64A(row) & ~ROW0_MASK) | AV_RN64A(row+4)) == 0) { if (((AV_RN64A(row) & ~ROW0_MASK) | AV_RN64A(row+4)) == 0) {
uint64_t temp; uint64_t temp;
if (DC_SHIFT - extra_shift >= 0) { if (DC_SHIFT - extra_shift >= 0) {