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| author | Michael Niedermayer <michaelni@gmx.at> | 2013-07-01 10:01:18 +0200 |
|---|---|---|
| committer | Luca Barbato <lu_zero@gentoo.org> | 2013-07-02 20:05:45 +0200 |
| commit | 4e11b155345101bac6185b48180e6f36c4850c8b (patch) | |
| tree | 88e8e90d80b11a97ba5e3ea91c2d1d175f0d1121 /libavcodec/jpeg2000.c | |
| parent | 4cbd5ed11b0161a6a192174934b241e0cc0599a9 (diff) | |
| download | ffmpeg-4e11b155345101bac6185b48180e6f36c4850c8b.tar.gz | |
jpeg2000: Calculate code-block coord in ff_jpeg2000_init_component()
Signed-off-by: Luca Barbato <lu_zero@gentoo.org>
Signed-off-by: Nicolas Bertrand <nicoinattendu@gmail.com>
Signed-off-by: Luca Barbato <lu_zero@gentoo.org>
Diffstat (limited to 'libavcodec/jpeg2000.c')
| -rw-r--r-- | libavcodec/jpeg2000.c | 14 |
1 files changed, 14 insertions, 0 deletions
diff --git a/libavcodec/jpeg2000.c b/libavcodec/jpeg2000.c index b1236993ac..b3182d63b0 100644 --- a/libavcodec/jpeg2000.c +++ b/libavcodec/jpeg2000.c @@ -443,6 +443,20 @@ int ff_jpeg2000_init_component(Jpeg2000Component *comp, /* Compute Cy1 */ cblk->coord[1][1] = FFMIN(Cy0 + (1 << band->log2_cblk_height), prec->coord[1][1]); + /* Update code-blocks coordinates according sub-band position */ + if ((bandno + !!reslevelno) & 1) { + cblk->coord[0][0] += comp->reslevel[reslevelno-1].coord[0][1] - + comp->reslevel[reslevelno-1].coord[0][0]; + cblk->coord[0][1] += comp->reslevel[reslevelno-1].coord[0][1] - + comp->reslevel[reslevelno-1].coord[0][0]; + } + if ((bandno + !!reslevelno) & 2) { + cblk->coord[1][0] += comp->reslevel[reslevelno-1].coord[1][1] - + comp->reslevel[reslevelno-1].coord[1][0]; + cblk->coord[1][1] += comp->reslevel[reslevelno-1].coord[1][1] - + comp->reslevel[reslevelno-1].coord[1][0]; + } + cblk->zero = 0; cblk->lblock = 3; cblk->length = 0; |