diff options
| author | Andreas Rheinhardt <andreas.rheinhardt@gmail.com> | 2019-09-28 04:26:10 +0200 |
|---|---|---|
| committer | Andreas Rheinhardt <andreas.rheinhardt@gmail.com> | 2020-07-03 00:03:45 +0200 |
| commit | 5367c91e021d5c790f41a8f071d60806bd1007f3 (patch) | |
| tree | ccb01acd138e2fd4910695d691444128add5c5f0 | |
| parent | 2faaf92e3fc878ef9641ca2d44b4e8316ccfe1c6 (diff) | |
| download | ffmpeg-5367c91e021d5c790f41a8f071d60806bd1007f3.tar.gz | |
avcodec/jpeg2000dwt: Fix undefined shifts of negative numbers
Affected the vsynth*-jpeg2000 and the vsynth*-jpeg2000-97 FATE tests
(where * ranges over { 1, 2, 3, _lena }) as well as ticket #7983.
Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@gmail.com>
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
(cherry picked from commit 5cf593adcd79a7c9502dc2725e1f0681ada36aef)
Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@gmail.com>
| -rw-r--r-- | libavcodec/jpeg2000dwt.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/libavcodec/jpeg2000dwt.c b/libavcodec/jpeg2000dwt.c index badf0f8cd0..f418454ee9 100644 --- a/libavcodec/jpeg2000dwt.c +++ b/libavcodec/jpeg2000dwt.c @@ -255,7 +255,7 @@ static void dwt_encode97_int(DWTContext *s, int *t) line += 5; for (i = 0; i < w * h; i++) - t[i] <<= I_PRESHIFT; + t[i] *= 1 << I_PRESHIFT; for (lev = s->ndeclevels-1; lev >= 0; lev--){ int lh = s->linelen[lev][0], |