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| author | Frank Plowman <post@frankplowman.com> | 2024-04-09 07:55:52 +0000 |
|---|---|---|
| committer | Nuo Mi <nuomi2021@gmail.com> | 2024-04-09 22:30:35 +0800 |
| commit | 2b7e79e8905bc9dc0ee9c9a9e313f38c31de4b0a (patch) | |
| tree | 517c953f8ae74d97d07ab7bc0a5bfa814f8870a4 | |
| parent | fcf74c5ebc520a53758eb410003fc8e814873053 (diff) | |
| download | ffmpeg-2b7e79e8905bc9dc0ee9c9a9e313f38c31de4b0a.tar.gz | |
lavc/vvc: Avoid overflow in coeff scale intermediate
Make intermediate result 64-bits to avoid an overflow before the right
shift.
Signed-off-by: Frank Plowman <post@frankplowman.com>
| -rw-r--r-- | libavcodec/vvc/intra.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/libavcodec/vvc/intra.c b/libavcodec/vvc/intra.c index e515fb9710..5ac7d02c80 100644 --- a/libavcodec/vvc/intra.c +++ b/libavcodec/vvc/intra.c @@ -416,7 +416,7 @@ static const uint8_t* derive_scale_m(const VVCLocalContext *lc, const TransformB static av_always_inline int scale_coeff(const TransformBlock *tb, int coeff, const int scale, const int scale_m, const int log2_transform_range) { - coeff = (coeff * scale * scale_m + tb->bd_offset) >> tb->bd_shift; + coeff = ((int64_t) coeff * scale * scale_m + tb->bd_offset) >> tb->bd_shift; coeff = av_clip_intp2(coeff, log2_transform_range); return coeff; } |