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avcodec/hevcdsp_template: Fix undefined shift in put_hevc_pel_bi_w_pixels

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Fixes: runtime error: left shift of negative value -95
Fixes: 3077/clusterfuzz-testcase-minimized-4684917524922368

Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
This commit is contained in:
Michael Niedermayer
2017-09-10 01:32:51 +02:00
parent b5995856a4
commit c225da68cf
1 changed files with 1 additions and 1 deletions
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libavcodec/hevcdsp_template.c
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@@ -593,7 +593,7 @@ static void FUNC(put_hevc_pel_bi_w_pixels)(uint8_t *_dst, ptrdiff_t _dststride,
ox1 = ox1 * (1 << (BIT_DEPTH - 8)); ox1 = ox1 * (1 << (BIT_DEPTH - 8));
for (y = 0; y < height; y++) { for (y = 0; y < height; y++) {
for (x = 0; x < width; x++) { for (x = 0; x < width; x++) {
dst[x] = av_clip_pixel(( (src[x] << (14 - BIT_DEPTH)) * wx1 + src2[x] * wx0 + ((ox0 + ox1 + 1) << log2Wd)) >> (log2Wd + 1)); dst[x] = av_clip_pixel(( (src[x] << (14 - BIT_DEPTH)) * wx1 + src2[x] * wx0 + (ox0 + ox1 + 1) * (1 << log2Wd)) >> (log2Wd + 1));
} }
src += srcstride; src += srcstride;
dst += dststride; dst += dststride;