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| author | Tom Butterworth <bangnoise@gmail.com> | 2015-05-07 21:21:46 +0100 |
|---|---|---|
| committer | Michael Niedermayer <michaelni@gmx.at> | 2015-05-07 23:10:56 +0200 |
| commit | 288dc5b4a11884b9a5cd62310abe99878544982b (patch) | |
| tree | 09ea8e83b7067464ca44abefe86efcece2b45fd2 | |
| parent | b1b0baa3d6a30942b258dddfdd04b4b24c713879 (diff) | |
| download | ffmpeg-288dc5b4a11884b9a5cd62310abe99878544982b.tar.gz | |
avcodec/s3tc: fix alpha decoding when dimensions are not a multiple of 4
Fix alpha position error for edge blocks of odd-dimensioned frames
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
| -rw-r--r-- | libavcodec/s3tc.c | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/libavcodec/s3tc.c b/libavcodec/s3tc.c index 9886b1dc9c..a422874d17 100644 --- a/libavcodec/s3tc.c +++ b/libavcodec/s3tc.c @@ -71,8 +71,10 @@ static inline void dxt1_decode_pixels(GetByteContext *gb, uint32_t *d, pixels >>= 2; alpha >>= 4; } - for (; x<4; x++) + for (; x<4; x++) { pixels >>= 2; + alpha >>= 4; + } d += qstride; } } |