@@ -304,7 +304,7 @@ void FUNCC(ff_h264_chroma422_dc_dequant_idct)(int16_t *_block, int qmul){
void FUNCC(ff_h264_chroma_dc_dequant_idct)(int16_t *_block, int qmul){
const int stride= 16*2;
const int xStride= 16;
- int a,b,c,d,e;
+ SUINT a,b,c,d,e;
dctcoef *block = (dctcoef*)_block;
a= block[stride*0 + xStride*0];
@@ -317,8 +317,8 @@ void FUNCC(ff_h264_chroma_dc_dequant_idct)(int16_t *_block, int qmul){
b= c-d;
c= c+d;
- block[stride*0 + xStride*0]= ((a+c)*qmul) >> 7;
- block[stride*0 + xStride*1]= ((e+b)*qmul) >> 7;
- block[stride*1 + xStride*0]= ((a-c)*qmul) >> 7;
- block[stride*1 + xStride*1]= ((e-b)*qmul) >> 7;
+ block[stride*0 + xStride*0]= (int)((a+c)*qmul) >> 7;
+ block[stride*0 + xStride*1]= (int)((e+b)*qmul) >> 7;
+ block[stride*1 + xStride*0]= (int)((a-c)*qmul) >> 7;
+ block[stride*1 + xStride*1]= (int)((e-b)*qmul) >> 7;
}
Fixes: 857/clusterfuzz-testcase-5319093760557056 Benchmark changes from 335->333 (so if its not a random fluctuation then it would be faster) Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/targets/ffmpeg Signed-off-by: Michael Niedermayer <michael@niedermayer.cc> --- libavcodec/h264idct_template.c | 10 +++++----- 1 file changed, 5 insertions(+), 5 deletions(-)