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Code Issues Releases Activity

avcodec/jpeg2000: Support 32 decomposition levels

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Fixes Ticket4680

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
This commit is contained in:
Michael Niedermayer 2015-06-28 03:16:06 +02:00
parent d62657eb4a
commit 317be53ca6
2 changed files with 2 additions and 2 deletions
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2
libavcodec/jpeg2000.c
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@ -363,7 +363,7 @@ int ff_jpeg2000_init_component(Jpeg2000Component *comp,
/* Formula example for tbx_0 = ceildiv((tcx_0 - 2 ^ (declvl - 1) * x0_b) / declvl) */
band->coord[i][j] =
ff_jpeg2000_ceildivpow2(comp->coord_o[i][j] -
(((bandno + 1 >> i) & 1) << declvl - 1),
(((bandno + 1 >> i) & 1LL) << declvl - 1),
declvl);
/* TODO: Manage case of 3 band offsets here or
* in coding/decoding function? */

2
libavcodec/jpeg2000.h
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@ -67,7 +67,7 @@ enum Jpeg2000Quantsty { // quantization style
JPEG2000_QSTY_SE // scalar expounded
};
#define JPEG2000_MAX_DECLEVELS 32
#define JPEG2000_MAX_DECLEVELS 33
#define JPEG2000_MAX_RESLEVELS (JPEG2000_MAX_DECLEVELS + 1)
#define JPEG2000_MAX_PASSES 100