- tilec->resolutions =
- (tcd_resolution_t *) malloc(tilec->numresolutions *
- sizeof(tcd_resolution_t));
- for (resno = 0; resno < tilec->numresolutions; resno++) {
- int pdx, pdy;
- int levelno = tilec->numresolutions - 1 - resno;
- int tlprcxstart, tlprcystart, brprcxend, brprcyend;
- int tlcbgxstart, tlcbgystart, brcbgxend, brcbgyend;
- int cbgwidthexpn, cbgheightexpn;
- int cblkwidthexpn, cblkheightexpn;
- tcd_resolution_t *res = &tilec->resolutions[resno];
-
- /* border for each resolution level (global) */
- res->x0 = int_ceildivpow2(tilec->x0, levelno);
- res->y0 = int_ceildivpow2(tilec->y0, levelno);
- res->x1 = int_ceildivpow2(tilec->x1, levelno);
- res->y1 = int_ceildivpow2(tilec->y1, levelno);
-
- res->numbands = resno == 0 ? 1 : 3;
- /* p. 35, table A-23, ISO/IEC FDIS154444-1 : 2000 (18 august 2000) */
- if (tccp->csty & J2K_CCP_CSTY_PRT) {
- pdx = tccp->prcw[resno];
- pdy = tccp->prch[resno];
- } else {
- pdx = 15;
- pdy = 15;
- }
- /* p. 64, B.6, ISO/IEC FDIS15444-1 : 2000 (18 august 2000) */
- tlprcxstart = int_floordivpow2(res->x0, pdx) << pdx;
- tlprcystart = int_floordivpow2(res->y0, pdy) << pdy;
- brprcxend = int_ceildivpow2(res->x1, pdx) << pdx;
- brprcyend = int_ceildivpow2(res->y1, pdy) << pdy;
- res->pw = (res->x0==res->x1)?0:((brprcxend - tlprcxstart) >> pdx); // Mod Antonin : sizebug1
- res->ph = (res->y0==res->y1)?0:((brprcyend - tlprcystart) >> pdy); // Mod Antonin : sizebug1
-
- if (resno == 0) {
- tlcbgxstart = tlprcxstart;
- tlcbgystart = tlprcystart;
- brcbgxend = brprcxend;
- brcbgyend = brprcyend;
- cbgwidthexpn = pdx;
- cbgheightexpn = pdy;
- } else {
- tlcbgxstart = int_ceildivpow2(tlprcxstart, 1);
- tlcbgystart = int_ceildivpow2(tlprcystart, 1);
- brcbgxend = int_ceildivpow2(brprcxend, 1);
- brcbgyend = int_ceildivpow2(brprcyend, 1);
- cbgwidthexpn = pdx - 1;
- cbgheightexpn = pdy - 1;
- }
-
- cblkwidthexpn = int_min(tccp->cblkw, cbgwidthexpn);
- cblkheightexpn = int_min(tccp->cblkh, cbgheightexpn);
-
- for (bandno = 0; bandno < res->numbands; bandno++) {
- int x0b, y0b;
- int gain, numbps;
- j2k_stepsize_t *ss;
- tcd_band_t *band = &res->bands[bandno];
- band->bandno = resno == 0 ? 0 : bandno + 1;
- x0b = (band->bandno == 1)
- || (band->bandno == 3) ? 1 : 0;
- y0b = (band->bandno == 2)
- || (band->bandno == 3) ? 1 : 0;
-
- if (band->bandno == 0) {
- /* band border (global) */
- band->x0 = int_ceildivpow2(tilec->x0, levelno);
- band->y0 = int_ceildivpow2(tilec->y0, levelno);
- band->x1 = int_ceildivpow2(tilec->x1, levelno);
- band->y1 = int_ceildivpow2(tilec->y1, levelno);
- } else {
- /* band border (global) */
- band->x0 =
- int_ceildivpow2(tilec->x0 -
- (1 << levelno) * x0b, levelno + 1);
- band->y0 =
- int_ceildivpow2(tilec->y0 -
- (1 << levelno) * y0b, levelno + 1);
- band->x1 =
- int_ceildivpow2(tilec->x1 -
- (1 << levelno) * x0b, levelno + 1);
- band->y1 =
- int_ceildivpow2(tilec->y1 -
- (1 << levelno) * y0b, levelno + 1);
- }
-
- ss = &tccp->stepsizes[resno ==
- 0 ? 0 : 3 * (resno - 1) + bandno + 1];
- gain =
- tccp->qmfbid ==
- 0 ? dwt_getgain_real(band->bandno) : dwt_getgain(band->bandno);
- numbps = img->comps[compno].prec + gain;
- band->stepsize =
- (int) floor((1.0 + ss->mant / 2048.0) *
- pow(2.0, numbps - ss->expn) * 8192.0);
- band->numbps = ss->expn + tccp->numgbits - 1; /* WHY -1 ? */
-
- band->precincts =
- (tcd_precinct_t *) malloc(res->pw * res->ph *
- sizeof(tcd_precinct_t));
-
- for (precno = 0; precno < res->pw * res->ph; precno++) {
- int tlcblkxstart, tlcblkystart, brcblkxend, brcblkyend;
- int cbgxstart =
- tlcbgxstart + (precno % res->pw) * (1 << cbgwidthexpn);
- int cbgystart =
- tlcbgystart + (precno / res->pw) * (1 << cbgheightexpn);
- int cbgxend = cbgxstart + (1 << cbgwidthexpn);
- int cbgyend = cbgystart + (1 << cbgheightexpn);
- tcd_precinct_t *prc = &band->precincts[precno];
- /* precinct size (global) */
- prc->x0 = int_max(cbgxstart, band->x0);
- prc->y0 = int_max(cbgystart, band->y0);
- prc->x1 = int_min(cbgxend, band->x1);
- prc->y1 = int_min(cbgyend, band->y1);
-
- tlcblkxstart =
- int_floordivpow2(prc->x0, cblkwidthexpn) << cblkwidthexpn;
- tlcblkystart =
- int_floordivpow2(prc->y0, cblkheightexpn) << cblkheightexpn;
- brcblkxend =
- int_ceildivpow2(prc->x1, cblkwidthexpn) << cblkwidthexpn;
- brcblkyend =
- int_ceildivpow2(prc->y1, cblkheightexpn) << cblkheightexpn;
- prc->cw = (brcblkxend - tlcblkxstart) >> cblkwidthexpn;
- prc->ch = (brcblkyend - tlcblkystart) >> cblkheightexpn;
-
- prc->cblks =
- (tcd_cblk_t *) malloc(prc->cw * prc->ch *
- sizeof(tcd_cblk_t));
-
- prc->incltree = tgt_create(prc->cw, prc->ch);
- prc->imsbtree = tgt_create(prc->cw, prc->ch);
-
- for (cblkno = 0; cblkno < prc->cw * prc->ch; cblkno++) {
- int cblkxstart =
- tlcblkxstart + (cblkno % prc->cw) * (1 << cblkwidthexpn);
- int cblkystart =
- tlcblkystart + (cblkno / prc->cw) * (1 << cblkheightexpn);
- int cblkxend = cblkxstart + (1 << cblkwidthexpn);
- int cblkyend = cblkystart + (1 << cblkheightexpn);
- tcd_cblk_t *cblk = &prc->cblks[cblkno];
- /* code-block size (global) */
- cblk->x0 = int_max(cblkxstart, prc->x0);
- cblk->y0 = int_max(cblkystart, prc->y0);
- cblk->x1 = int_min(cblkxend, prc->x1);
- cblk->y1 = int_min(cblkyend, prc->y1);
-
-
-
- cblk->lastbp = 0; // Add Antonin : quantizbug1
- }
- }
- }
- }
- }
- }
- //tcd_dump(&tcd_image,0);
-
-
- /* Allocate place to store the data decoded = final image */
- /* Place limited by the tile really present in the codestream */