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| author | Michael Niedermayer <michael@niedermayer.cc> | 2024-07-05 02:21:56 +0200 |
|---|---|---|
| committer | Michael Niedermayer <michael@niedermayer.cc> | 2024-07-12 22:42:46 +0200 |
| commit | 0474614e6cf8edcd0077b95772c29fae894a7db9 (patch) | |
| tree | 44cfc6b28beaee828e3760874447c40cc29bf980 /libavcodec | |
| parent | f18b442370d714b930e3e983c2e5d789229f3356 (diff) | |
| download | ffmpeg-0474614e6cf8edcd0077b95772c29fae894a7db9.tar.gz | |
avcodec/pixlet: Simplify pfx computation
Found by reviewing code related to CID1604365 Overflowed constant
Sponsored-by: Sovereign Tech Fund
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
Diffstat (limited to 'libavcodec')
| -rw-r--r-- | libavcodec/pixlet.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/libavcodec/pixlet.c b/libavcodec/pixlet.c index 6b6e39f275..e9c561d70d 100644 --- a/libavcodec/pixlet.c +++ b/libavcodec/pixlet.c @@ -231,8 +231,8 @@ static int read_high_coeffs(AVCodecContext *avctx, const uint8_t *src, int16_t * if (cnt1 >= length) { cnt1 = get_bits(bc, nbits); } else { - pfx = 14 + ((((uint64_t)(value - 14)) >> 32) & (value - 14)); - if (pfx < 1 || pfx > 25) + pfx = FFMIN(value, 14); + if (pfx < 1) return AVERROR_INVALIDDATA; cnt1 *= (1 << pfx) - 1; shbits = show_bits(bc, pfx); |