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| author | Michael Niedermayer <michael@niedermayer.cc> | 2017-12-26 23:24:45 +0100 |
|---|---|---|
| committer | Michael Niedermayer <michael@niedermayer.cc> | 2018-01-31 22:56:15 +0100 |
| commit | aae8ea9c186eaf4e6062d163ad5ee0717ce40837 (patch) | |
| tree | fc04327711e38361baae48ca15e9b17e841dc4ba | |
| parent | 59e3f49ef0f3db4ef2ea06daf61bc965618f8485 (diff) | |
| download | ffmpeg-aae8ea9c186eaf4e6062d163ad5ee0717ce40837.tar.gz | |
avcodec/hevcdsp_template: Fix Invalid shifts in put_hevc_qpel_bi_w_h() and put_hevc_qpel_bi_w_w()
Fixes: left shift of negative value -1
Fixes: 4690/clusterfuzz-testcase-minimized-6117482428366848
Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
(cherry picked from commit d135f3c514ac1723256c8e0f5cdd466fe98a2578)
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
| -rw-r--r-- | libavcodec/hevcdsp_template.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/libavcodec/hevcdsp_template.c b/libavcodec/hevcdsp_template.c index 4d2e6bf453..65dd179d0d 100644 --- a/libavcodec/hevcdsp_template.c +++ b/libavcodec/hevcdsp_template.c @@ -921,7 +921,7 @@ static void FUNC(put_hevc_qpel_bi_w_h)(uint8_t *_dst, ptrdiff_t _dststride, uint for (y = 0; y < height; y++) { for (x = 0; x < width; x++) dst[x] = av_clip_pixel(((QPEL_FILTER(src, 1) >> (BIT_DEPTH - 8)) * wx1 + src2[x] * wx0 + - ((ox0 + ox1 + 1) << log2Wd)) >> (log2Wd + 1)); + ((ox0 + ox1 + 1) * (1 << log2Wd))) >> (log2Wd + 1)); src += srcstride; dst += dststride; src2 += MAX_PB_SIZE; @@ -976,7 +976,7 @@ static void FUNC(put_hevc_qpel_bi_w_v)(uint8_t *_dst, ptrdiff_t _dststride, uint for (y = 0; y < height; y++) { for (x = 0; x < width; x++) dst[x] = av_clip_pixel(((QPEL_FILTER(src, srcstride) >> (BIT_DEPTH - 8)) * wx1 + src2[x] * wx0 + - ((ox0 + ox1 + 1) << log2Wd)) >> (log2Wd + 1)); + ((ox0 + ox1 + 1) * (1 << log2Wd))) >> (log2Wd + 1)); src += srcstride; dst += dststride; src2 += MAX_PB_SIZE; |