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j2k/jpeg2000: drop xi/yi0/1 from Jpeg2000Prec

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Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
This commit is contained in:
Michael Niedermayer 2013-05-27 15:53:42 +02:00
parent a05db52c12
commit 8c2e201c4f
5 changed files with 10 additions and 50 deletions
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40
libavcodec/j2k.c
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@ -243,10 +243,6 @@ int ff_j2k_init_component(Jpeg2000Component *comp,
for (bandno = 0; bandno < reslevel->nbands; bandno++, gbandno++) {
Jpeg2000Band *band = reslevel->band + bandno;
int precx, precy;
int x0, y0, x1, y1;
int xi0, yi0, xi1, yi1;
int cblkperprecw, cblkperprech;
int cblkno, precno;
int nb_precincts;
@ -314,38 +310,6 @@ int ff_j2k_init_component(Jpeg2000Component *comp,
nb_precincts = reslevel->num_precincts_x * reslevel->num_precincts_y;
y0 = band->coord[1][0];
y1 = ((band->coord[1][0] + (1<<reslevel->log2_prec_height)) & ~((1<<reslevel->log2_prec_height)-1)) - y0;
yi0 = 0;
yi1 = ff_jpeg2000_ceildivpow2(y1 - y0, codsty->log2_cblk_height) << codsty->log2_cblk_height;
yi1 = FFMIN(yi1, band->cblkny);
cblkperprech = 1<<(reslevel->log2_prec_height - codsty->log2_cblk_height);
for (precy = 0, precno = 0; precy < reslevel->num_precincts_y; precy++) {
for (precx = 0; precx < reslevel->num_precincts_x; precx++, precno++) {
band->prec[precno].yi0 = yi0;
band->prec[precno].yi1 = yi1;
}
yi1 += cblkperprech;
yi0 = yi1 - cblkperprech;
yi1 = FFMIN(yi1, band->cblkny);
}
x0 = band->coord[0][0];
x1 = ((band->coord[0][0] + (1<<reslevel->log2_prec_width)) & ~((1<<reslevel->log2_prec_width)-1)) - x0;
xi0 = 0;
xi1 = ff_jpeg2000_ceildivpow2(x1 - x0, codsty->log2_cblk_width) << codsty->log2_cblk_width;
xi1 = FFMIN(xi1, band->cblknx);
cblkperprecw = 1<<(reslevel->log2_prec_width - codsty->log2_cblk_width);
for (precx = 0, precno = 0; precx < reslevel->num_precincts_x; precx++) {
for (precy = 0; precy < reslevel->num_precincts_y; precy++, precno = 0) {
Jpeg2000Prec *prec = band->prec + precno;
prec->xi0 = xi0;
prec->xi1 = xi1;
}
xi1 += cblkperprecw;
xi0 = xi1 - cblkperprecw;
xi1 = FFMIN(xi1, band->cblknx);
}
for (precno = 0; precno < nb_precincts; precno++) {
Jpeg2000Prec *prec = band->prec + precno;
@ -452,8 +416,8 @@ void ff_j2k_reinit(Jpeg2000Component *comp, Jpeg2000CodingStyle *codsty)
Jpeg2000Band *band = rlevel->band + bandno;
for(precno = 0; precno < rlevel->num_precincts_x * rlevel->num_precincts_y; precno++) {
Jpeg2000Prec *prec = band->prec + precno;
tag_tree_zero(prec->zerobits, prec->xi1 - prec->xi0, prec->yi1 - prec->yi0);
tag_tree_zero(prec->cblkincl, prec->xi1 - prec->xi0, prec->yi1 - prec->yi0);
tag_tree_zero(prec->zerobits, prec->nb_codeblocks_width, prec->nb_codeblocks_height);
tag_tree_zero(prec->cblkincl, prec->nb_codeblocks_width, prec->nb_codeblocks_height);
for (cblkno = 0; cblkno < prec->nb_codeblocks_width * prec->nb_codeblocks_height; cblkno++) {
Jpeg2000Cblk *cblk = prec->cblk + cblkno;
cblk->length = 0;

1
libavcodec/j2k.h
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@ -167,7 +167,6 @@ typedef struct Jpeg2000Cblk {
} Jpeg2000Cblk; // code block
typedef struct Jpeg2000Prec {
uint16_t xi0, xi1, yi0, yi1; // codeblock indexes ([xi0, xi1))
uint16_t nb_codeblocks_width;
uint16_t nb_codeblocks_height;
Jpeg2000TgtNode *zerobits;

16
libavcodec/j2kenc.c
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@ -668,14 +668,14 @@ static int encode_packet(Jpeg2000EncoderContext *s, Jpeg2000ResLevel *rlevel, in
Jpeg2000Band *band = rlevel->band + bandno;
Jpeg2000Prec *prec = band->prec + precno;
int yi, xi, pos;
int cblknw = prec->xi1 - prec->xi0;
int cblknw = prec->nb_codeblocks_width;
if (band->coord[0][0] == band->coord[0][1]
|| band->coord[1][0] == band->coord[1][1])
continue;
for (pos=0, yi = prec->yi0; yi < prec->yi1; yi++){
for (xi = prec->xi0; xi < prec->xi1; xi++, pos++){
for (pos=0, yi = 0; yi < prec->nb_codeblocks_height; yi++){
for (xi = 0; xi < cblknw; xi++, pos++){
prec->cblkincl[pos].val = prec->cblk[yi * cblknw + xi].ninclpasses == 0;
tag_tree_update(prec->cblkincl + pos);
prec->zerobits[pos].val = expn[bandno] + numgbits - 1 - prec->cblk[yi * cblknw + xi].nonzerobits;
@ -683,8 +683,8 @@ static int encode_packet(Jpeg2000EncoderContext *s, Jpeg2000ResLevel *rlevel, in
}
}
for (pos=0, yi = prec->yi0; yi < prec->yi1; yi++){
for (xi = prec->xi0; xi < prec->xi1; xi++, pos++){
for (pos=0, yi = 0; yi < prec->nb_codeblocks_height; yi++){
for (xi = 0; xi < cblknw; xi++, pos++){
int pad = 0, llen, length;
Jpeg2000Cblk *cblk = prec->cblk + yi * cblknw + xi;
@ -717,10 +717,10 @@ static int encode_packet(Jpeg2000EncoderContext *s, Jpeg2000ResLevel *rlevel, in
for (bandno = 0; bandno < rlevel->nbands; bandno++){
Jpeg2000Band *band = rlevel->band + bandno;
Jpeg2000Prec *prec = band->prec + precno;
int yi, cblknw = prec->xi1 - prec->xi0;
for (yi = prec->yi0; yi < prec->yi1; yi++){
int yi, cblknw = prec->nb_codeblocks_width;
for (yi =0; yi < prec->nb_codeblocks_height; yi++){
int xi;
for (xi = prec->xi0; xi < prec->xi1; xi++){
for (xi = 0; xi < cblknw; xi++){
Jpeg2000Cblk *cblk = prec->cblk + yi * cblknw + xi;
if (cblk->ninclpasses){
if (s->buf_end - s->buf < cblk->passes[cblk->ninclpasses-1].rate)

1
libavcodec/jpeg2000.h
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@ -168,7 +168,6 @@ typedef struct Jpeg2000Cblk {
} Jpeg2000Cblk; // code block
typedef struct Jpeg2000Prec {
uint16_t xi0, yi0; // codeblock indexes ([xi0, xi1))
uint16_t nb_codeblocks_width;
uint16_t nb_codeblocks_height;
Jpeg2000TgtNode *zerobits;

2
libavcodec/jpeg2000dec.c
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@ -605,8 +605,6 @@ static int jpeg2000_decode_packet(Jpeg2000DecoderContext *s,
if (band->coord[0][0] == band->coord[0][1] ||
band->coord[1][0] == band->coord[1][1])
continue;
prec->yi0 = 0;
prec->xi0 = 0;
nb_code_blocks = prec->nb_codeblocks_height *
prec->nb_codeblocks_width;
for (cblkno = 0; cblkno < nb_code_blocks; cblkno++) {