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Code Issues Releases Activity

avcodec/h264dsp_template: Fix undefined shift in biweight_h264_pixels and weight_h264_pixels

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Found-by: Clang -fsanitize=shift
Reported-by: Thierry Foucu <tfoucu@google.com>
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
This commit is contained in:
Michael Niedermayer 2015-03-11 18:49:57 +01:00
parent 2391e46430
commit c756b3fca2
1 changed files with 3 additions and 3 deletions
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6
libavcodec/h264dsp_template.c
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@ -36,7 +36,7 @@ static void FUNCC(weight_h264_pixels ## W)(uint8_t *_block, int stride, int heig
int y; \
pixel *block = (pixel*)_block; \
stride >>= sizeof(pixel)-1; \
offset <<= (log2_denom + (BIT_DEPTH-8)); \
offset = (unsigned)offset << (log2_denom + (BIT_DEPTH-8)); \
if(log2_denom) offset += 1<<(log2_denom-1); \
for (y = 0; y < height; y++, block += stride) { \
op_scale1(0); \
@ -67,8 +67,8 @@ static void FUNCC(biweight_h264_pixels ## W)(uint8_t *_dst, uint8_t *_src, int s
pixel *dst = (pixel*)_dst; \
pixel *src = (pixel*)_src; \
stride >>= sizeof(pixel)-1; \
offset <<= (BIT_DEPTH-8); \
offset = ((offset + 1) | 1) << log2_denom; \
offset = (unsigned)offset << (BIT_DEPTH-8); \
offset = (unsigned)((offset + 1) | 1) << log2_denom; \
for (y = 0; y < height; y++, dst += stride, src += stride) { \
op_scale2(0); \
op_scale2(1); \