From: Michael Niedermayer <[email protected]>
Signed-off-by: Luca Barbato <[email protected]>
Signed-off-by: Nicolas Bertrand <[email protected]>
---
libavcodec/jpeg2k.c | 10 ++++++++++
libavcodec/jpeg2kdec.c | 9 ---------
2 files changed, 10 insertions(+), 9 deletions(-)
diff --git a/libavcodec/jpeg2k.c b/libavcodec/jpeg2k.c
index 1af58f4..1fac808 100644
--- a/libavcodec/jpeg2k.c
+++ b/libavcodec/jpeg2k.c
@@ -443,6 +443,16 @@ int ff_jpeg2k_init_component(Jpeg2KComponent *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;
diff --git a/libavcodec/jpeg2kdec.c b/libavcodec/jpeg2kdec.c
index 8494327..4e13a92 100644
--- a/libavcodec/jpeg2kdec.c
+++ b/libavcodec/jpeg2kdec.c
@@ -1119,17 +1119,8 @@ static int jpeg2k_decode_tile(Jpeg2KDecoderContext *s,
Jpeg2KTile *tile,
cblk->coord[1][1] - cblk->coord[1][0],
bandpos);
- /* Manage band offsets */
x = cblk->coord[0][0];
y = cblk->coord[1][0];
- if ((reslevelno > 0) && ((bandno + 1) & 1)) {
- Jpeg2KResLevel *pres = comp->reslevel +
(reslevelno - 1);
- x += pres->coord[0][1] - pres->coord[0][0];
- }
- if ((reslevelno > 0) && ((bandno + 1) & 2)) {
- Jpeg2KResLevel *pres = comp->reslevel +
(reslevelno - 1);
- y += pres->coord[1][1] - pres->coord[1][0];
- }
if (s->avctx->flags & CODEC_FLAG_BITEXACT)
dequantization_int(x, y, cblk, comp, &t1, band);
--
1.7.9.5
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