WebSVN - AndroidProjects - Rev 244 - /tools/osframework/source/ImageLib/jpeg2000/jpc

/*
* Copyright (c) 1999-2000 Image Power, Inc. and the University of
* British Columbia.
* Copyright (c) 2001-2003 Michael David Adams.
* All rights reserved.
*/

/* __START_OF_JASPER_LICENSE__
*
* JasPer Software License
*
* IMAGE POWER JPEG-2000 PUBLIC LICENSE
* ************************************
*
* GRANT:
*
* Permission is hereby granted, free of charge, to any person (the "User")
* obtaining a copy of this software and associated documentation, to deal
* in the JasPer Software without restriction, including without limitation
* the right to use, copy, modify, merge, publish, distribute, sublicense,
* and/or sell copies of the JasPer Software (in source and binary forms),
* and to permit persons to whom the JasPer Software is furnished to do so,
* provided further that the License Conditions below are met.
*
* License Conditions
* ******************
*
* A. Redistributions of source code must retain the above copyright notice,
* and this list of conditions, and the following disclaimer.
*
* B. Redistributions in binary form must reproduce the above copyright
* notice, and this list of conditions, and the following disclaimer in
* the documentation and/or other materials provided with the distribution.
*
* C. Neither the name of Image Power, Inc. nor any other contributor
* (including, but not limited to, the University of British Columbia and
* Michael David Adams) may be used to endorse or promote products derived
* from this software without specific prior written permission.
*
* D. User agrees that it shall not commence any action against Image Power,
* Inc., the University of British Columbia, Michael David Adams, or any
* other contributors (collectively "Licensors") for infringement of any
* intellectual property rights ("IPR") held by the User in respect of any
* technology that User owns or has a right to license or sublicense and
* which is an element required in order to claim compliance with ISO/IEC
* 15444-1 (i.e., JPEG-2000 Part 1). "IPR" means all intellectual property
* rights worldwide arising under statutory or common law, and whether
* or not perfected, including, without limitation, all (i) patents and
* patent applications owned or licensable by User; (ii) rights associated
* with works of authorship including copyrights, copyright applications,
* copyright registrations, mask work rights, mask work applications,
* mask work registrations; (iii) rights relating to the protection of
* trade secrets and confidential information; (iv) any right analogous
* to those set forth in subsections (i), (ii), or (iii) and any other
* proprietary rights relating to intangible property (other than trademark,
* trade dress, or service mark rights); and (v) divisions, continuations,
* renewals, reissues and extensions of the foregoing (as and to the extent
* applicable) now existing, hereafter filed, issued or acquired.
*
* E. If User commences an infringement action against any Licensor(s) then
* such Licensor(s) shall have the right to terminate User's license and
* all sublicenses that have been granted hereunder by User to other parties.
*
* F. This software is for use only in hardware or software products that
* are compliant with ISO/IEC 15444-1 (i.e., JPEG-2000 Part 1). No license
* or right to this Software is granted for products that do not comply
* with ISO/IEC 15444-1. The JPEG-2000 Part 1 standard can be purchased
* from the ISO.
*
* THIS DISCLAIMER OF WARRANTY CONSTITUTES AN ESSENTIAL PART OF THIS LICENSE.
* NO USE OF THE JASPER SOFTWARE IS AUTHORIZED HEREUNDER EXCEPT UNDER
* THIS DISCLAIMER. THE JASPER SOFTWARE IS PROVIDED BY THE LICENSORS AND
* CONTRIBUTORS UNDER THIS LICENSE ON AN ``AS-IS'' BASIS, WITHOUT WARRANTY
* OF ANY KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING, WITHOUT LIMITATION,
* WARRANTIES THAT THE JASPER SOFTWARE IS FREE OF DEFECTS, IS MERCHANTABLE,
* IS FIT FOR A PARTICULAR PURPOSE OR IS NON-INFRINGING. THOSE INTENDING
* TO USE THE JASPER SOFTWARE OR MODIFICATIONS THEREOF FOR USE IN HARDWARE
* OR SOFTWARE PRODUCTS ARE ADVISED THAT THEIR USE MAY INFRINGE EXISTING
* PATENTS, COPYRIGHTS, TRADEMARKS, OR OTHER INTELLECTUAL PROPERTY RIGHTS.
* THE ENTIRE RISK AS TO THE QUALITY AND PERFORMANCE OF THE JASPER SOFTWARE
* IS WITH THE USER. SHOULD ANY PART OF THE JASPER SOFTWARE PROVE DEFECTIVE
* IN ANY RESPECT, THE USER (AND NOT THE INITIAL DEVELOPERS, THE UNIVERSITY
* OF BRITISH COLUMBIA, IMAGE POWER, INC., MICHAEL DAVID ADAMS, OR ANY
* OTHER CONTRIBUTOR) SHALL ASSUME THE COST OF ANY NECESSARY SERVICING,
* REPAIR OR CORRECTION. UNDER NO CIRCUMSTANCES AND UNDER NO LEGAL THEORY,
* WHETHER TORT (INCLUDING NEGLIGENCE), CONTRACT, OR OTHERWISE, SHALL THE
* INITIAL DEVELOPER, THE UNIVERSITY OF BRITISH COLUMBIA, IMAGE POWER, INC.,
* MICHAEL DAVID ADAMS, ANY OTHER CONTRIBUTOR, OR ANY DISTRIBUTOR OF THE
* JASPER SOFTWARE, OR ANY SUPPLIER OF ANY OF SUCH PARTIES, BE LIABLE TO
* THE USER OR ANY OTHER PERSON FOR ANY INDIRECT, SPECIAL, INCIDENTAL, OR
* CONSEQUENTIAL DAMAGES OF ANY CHARACTER INCLUDING, WITHOUT LIMITATION,
* DAMAGES FOR LOSS OF GOODWILL, WORK STOPPAGE, COMPUTER FAILURE OR
* MALFUNCTION, OR ANY AND ALL OTHER COMMERCIAL DAMAGES OR LOSSES, EVEN IF
* SUCH PARTY HAD BEEN INFORMED, OR OUGHT TO HAVE KNOWN, OF THE POSSIBILITY
* OF SUCH DAMAGES. THE JASPER SOFTWARE AND UNDERLYING TECHNOLOGY ARE NOT
* FAULT-TOLERANT AND ARE NOT DESIGNED, MANUFACTURED OR INTENDED FOR USE OR
* RESALE AS ON-LINE CONTROL EQUIPMENT IN HAZARDOUS ENVIRONMENTS REQUIRING
* FAIL-SAFE PERFORMANCE, SUCH AS IN THE OPERATION OF NUCLEAR FACILITIES,
* AIRCRAFT NAVIGATION OR COMMUNICATION SYSTEMS, AIR TRAFFIC CONTROL, DIRECT
* LIFE SUPPORT MACHINES, OR WEAPONS SYSTEMS, IN WHICH THE FAILURE OF THE
* JASPER SOFTWARE OR UNDERLYING TECHNOLOGY OR PRODUCT COULD LEAD DIRECTLY
* TO DEATH, PERSONAL INJURY, OR SEVERE PHYSICAL OR ENVIRONMENTAL DAMAGE
* ("HIGH RISK ACTIVITIES"). LICENSOR SPECIFICALLY DISCLAIMS ANY EXPRESS
* OR IMPLIED WARRANTY OF FITNESS FOR HIGH RISK ACTIVITIES. USER WILL NOT
* KNOWINGLY USE, DISTRIBUTE OR RESELL THE JASPER SOFTWARE OR UNDERLYING
* TECHNOLOGY OR PRODUCTS FOR HIGH RISK ACTIVITIES AND WILL ENSURE THAT ITS
* CUSTOMERS AND END-USERS OF ITS PRODUCTS ARE PROVIDED WITH A COPY OF THE
* NOTICE SPECIFIED IN THIS SECTION.
*
* __END_OF_JASPER_LICENSE__
*/

/*
* Tier 2 Encoder
*
* $Id: jpc_t2enc.c,v 1.1 2003/05/15 01:30:32 ace Exp $
*/

/******************************************************************************\
* Includes.
\******************************************************************************/

#include <stdio.h>
#include <stdlib.h>
#include <assert.h>

#include "jas_fix.h"
#include "jas_malloc.h"
#include "jas_math.h"
#include "jas_debug.h"

#include "jpc_flt.h"
#include "jpc_t2enc.h"
#include "jpc_t2cod.h"
#include "jpc_tagtree.h"
#include "jpc_enc.h"
#include "jpc_math.h"

/******************************************************************************\
* Code.
\******************************************************************************/

static int jpc_putcommacode(jpc_bitstream_t *out, int n)
{
assert(n >= 0);

while (--n >= 0) {
if (jpc_bitstream_putbit(out, 1) == EOF) {
return -1;
}
}
if (jpc_bitstream_putbit(out, 0) == EOF) {
return -1;
}
return 0;
}

static int jpc_putnumnewpasses(jpc_bitstream_t *out, int n)
{
int ret;

if (n <= 0) {
return -1;
} else if (n == 1) {
ret = jpc_bitstream_putbit(out, 0);
} else if (n == 2) {
ret = jpc_bitstream_putbits(out, 2, 2);
} else if (n <= 5) {
ret = jpc_bitstream_putbits(out, 4, 0xc | (n - 3));
} else if (n <= 36) {
ret = jpc_bitstream_putbits(out, 9, 0x1e0 | (n - 6));
} else if (n <= 164) {
ret = jpc_bitstream_putbits(out, 16, 0xff80 | (n - 37));
} else {
/* The standard has no provision for encoding a larger value.
In practice, however, it is highly unlikely that this
limitation will ever be encountered. */
return -1;
}

return (ret != EOF) ? 0 : (-1);
}

int jpc_enc_encpkts(jpc_enc_t *enc, jas_stream_t *out)
{
jpc_enc_tile_t *tile;
jpc_pi_t *pi;

tile = enc->curtile;

jpc_init_t2state(enc, 0);
pi = tile->pi;
jpc_pi_init(pi);

if (!jpc_pi_next(pi)) {
for (;;) {
if (jpc_enc_encpkt(enc, out, jpc_pi_cmptno(pi), jpc_pi_rlvlno(pi),
jpc_pi_prcno(pi), jpc_pi_lyrno(pi))) {
return -1;
}
if (jpc_pi_next(pi)) {
break;
}
}
}

return 0;
}

int jpc_enc_encpkt(jpc_enc_t *enc, jas_stream_t *out, int compno, int lvlno, int prcno, int lyrno)
{
jpc_enc_tcmpt_t *comp;
jpc_enc_rlvl_t *lvl;
jpc_enc_band_t *band;
jpc_enc_band_t *endbands;
jpc_enc_cblk_t *cblk;
jpc_enc_cblk_t *endcblks;
jpc_bitstream_t *outb;
jpc_enc_pass_t *pass;
jpc_enc_pass_t *startpass;
jpc_enc_pass_t *lastpass;
jpc_enc_pass_t *endpass;
jpc_enc_pass_t *endpasses;
int i;
int included;
int ret;
jpc_tagtreenode_t *leaf;
int n;
int t1;
int t2;
int adjust;
int maxadjust;
int datalen;
int numnewpasses;
int passcount;
jpc_enc_tile_t *tile;
jpc_enc_prc_t *prc;
jpc_enc_cp_t *cp;
jpc_ms_t *ms;

tile = enc->curtile;
cp = enc->cp;

if (cp->tcp.csty & JPC_COD_SOP) {
if (!(ms = jpc_ms_create(JPC_MS_SOP))) {
return -1;
}
ms->parms.sop.seqno = jpc_pi_getind(tile->pi);
if (jpc_putms(out, enc->cstate, ms)) {
return -1;
}
jpc_ms_destroy(ms);
}

outb = jpc_bitstream_sopen(out, "w+");
assert(outb);

if (jpc_bitstream_putbit(outb, 1) == EOF) {
return -1;
}
JAS_DBGLOG(10, ("\n"));
JAS_DBGLOG(10, ("present. "));

comp = &tile->tcmpts[compno];
lvl = &comp->rlvls[lvlno];
endbands = &lvl->bands[lvl->numbands];
for (band = lvl->bands; band != endbands; ++band) {
if (!band->data) {
continue;
}
prc = &band->prcs[prcno];
if (!prc->cblks) {
continue;
}

endcblks = &prc->cblks[prc->numcblks];
for (cblk = prc->cblks; cblk != endcblks; ++cblk) {
if (!lyrno) {
leaf = jpc_tagtree_getleaf(prc->nlibtree, cblk - prc->cblks);
jpc_tagtree_setvalue(prc->nlibtree, leaf, cblk->numimsbs);
}
pass = cblk->curpass;
included = (pass && pass->lyrno == lyrno);
if (included && (!cblk->numencpasses)) {
assert(pass->lyrno == lyrno);
leaf = jpc_tagtree_getleaf(prc->incltree,
cblk - prc->cblks);
jpc_tagtree_setvalue(prc->incltree, leaf, pass->lyrno);
}
}

endcblks = &prc->cblks[prc->numcblks];
for (cblk = prc->cblks; cblk != endcblks; ++cblk) {
pass = cblk->curpass;
included = (pass && pass->lyrno == lyrno);
if (!cblk->numencpasses) {
leaf = jpc_tagtree_getleaf(prc->incltree,
cblk - prc->cblks);
if (jpc_tagtree_encode(prc->incltree, leaf, lyrno
+ 1, outb) < 0) {
return -1;
}
} else {
if (jpc_bitstream_putbit(outb, included) == EOF) {
return -1;
}
}
JAS_DBGLOG(10, ("included=%d ", included));
if (!included) {
continue;
}
if (!cblk->numencpasses) {
i = 1;
leaf = jpc_tagtree_getleaf(prc->nlibtree, cblk - prc->cblks);
for (;;) {
if ((ret = jpc_tagtree_encode(prc->nlibtree, leaf, i, outb)) < 0) {
return -1;
}
if (ret) {
break;
}
++i;
}
assert(leaf->known_ && i == leaf->value_ + 1);
}

endpasses = &cblk->passes[cblk->numpasses];
startpass = pass;
endpass = startpass;
while (endpass != endpasses && endpass->lyrno == lyrno){
++endpass;
}
numnewpasses = endpass - startpass;
if (jpc_putnumnewpasses(outb, numnewpasses)) {
return -1;
}
JAS_DBGLOG(10, ("numnewpasses=%d ", numnewpasses));

lastpass = endpass - 1;
n = startpass->start;
passcount = 1;
maxadjust = 0;
for (pass = startpass; pass != endpass; ++pass) {
if (pass->term || pass == lastpass) {
datalen = pass->end - n;
t1 = jpc_firstone(datalen) + 1;
t2 = cblk->numlenbits + jpc_floorlog2(passcount);
adjust = JAS_MAX(t1 - t2, 0);
maxadjust = JAS_MAX(adjust, maxadjust);
n += datalen;
passcount = 1;
} else {
++passcount;
}
}
if (jpc_putcommacode(outb, maxadjust)) {
return -1;
}
cblk->numlenbits += maxadjust;

lastpass = endpass - 1;
n = startpass->start;
passcount = 1;
for (pass = startpass; pass != endpass; ++pass) {
if (pass->term || pass == lastpass) {
datalen = pass->end - n;
assert(jpc_firstone(datalen) < cblk->numlenbits + jpc_floorlog2(passcount));
if (jpc_bitstream_putbits(outb, cblk->numlenbits + jpc_floorlog2(passcount), datalen) == EOF) {
return -1;
}
n += datalen;
passcount = 1;
} else {
++passcount;
}
}
}
}

jpc_bitstream_outalign(outb, 0);
jpc_bitstream_close(outb);

if (cp->tcp.csty & JPC_COD_EPH) {
if (!(ms = jpc_ms_create(JPC_MS_EPH))) {
return -1;
}
jpc_putms(out, enc->cstate, ms);
jpc_ms_destroy(ms);
}

comp = &tile->tcmpts[compno];
lvl = &comp->rlvls[lvlno];
endbands = &lvl->bands[lvl->numbands];
for (band = lvl->bands; band != endbands; ++band) {
if (!band->data) {
continue;
}
prc = &band->prcs[prcno];
if (!prc->cblks) {
continue;
}
endcblks = &prc->cblks[prc->numcblks];
for (cblk = prc->cblks; cblk != endcblks; ++cblk) {
pass = cblk->curpass;

if (!pass) {
continue;
}
if (pass->lyrno != lyrno) {
assert(pass->lyrno < 0 || pass->lyrno > lyrno);
continue;
}

endpasses = &cblk->passes[cblk->numpasses];
startpass = pass;
endpass = startpass;
while (endpass != endpasses && endpass->lyrno == lyrno){
++endpass;
}
lastpass = endpass - 1;
numnewpasses = endpass - startpass;

jas_stream_seek(cblk->stream, startpass->start, SEEK_SET);
assert(jas_stream_tell(cblk->stream) == startpass->start);
if (jas_stream_copy(out, cblk->stream, lastpass->end - startpass->start)) {
return -1;
}
cblk->curpass = (endpass != endpasses) ? endpass : 0;
cblk->numencpasses += numnewpasses;

}
}

return 0;
}

void jpc_save_t2state(jpc_enc_t *enc)
{
/* stream pos in embedded T1 stream may be wrong since not saved/restored! */

jpc_enc_tcmpt_t *comp;
jpc_enc_tcmpt_t *endcomps;
jpc_enc_rlvl_t *lvl;
jpc_enc_rlvl_t *endlvls;
jpc_enc_band_t *band;
jpc_enc_band_t *endbands;
jpc_enc_cblk_t *cblk;
jpc_enc_cblk_t *endcblks;
jpc_enc_tile_t *tile;
int prcno;
jpc_enc_prc_t *prc;

tile = enc->curtile;

endcomps = &tile->tcmpts[tile->numtcmpts];
for (comp = tile->tcmpts; comp != endcomps; ++comp) {
endlvls = &comp->rlvls[comp->numrlvls];
for (lvl = comp->rlvls; lvl != endlvls; ++lvl) {
if (!lvl->bands) {
continue;
}
endbands = &lvl->bands[lvl->numbands];
for (band = lvl->bands; band != endbands; ++band) {
if (!band->data) {
continue;
}
for (prcno = 0, prc = band->prcs; prcno < lvl->numprcs; ++prcno, ++prc) {
if (!prc->cblks) {
continue;
}
jpc_tagtree_copy(prc->savincltree, prc->incltree);
jpc_tagtree_copy(prc->savnlibtree, prc->nlibtree);
endcblks = &prc->cblks[prc->numcblks];
for (cblk = prc->cblks; cblk != endcblks; ++cblk) {
cblk->savedcurpass = cblk->curpass;
cblk->savednumencpasses = cblk->numencpasses;
cblk->savednumlenbits = cblk->numlenbits;
}
}
}
}
}

}

void jpc_restore_t2state(jpc_enc_t *enc)
{

jpc_enc_tcmpt_t *comp;
jpc_enc_tcmpt_t *endcomps;
jpc_enc_rlvl_t *lvl;
jpc_enc_rlvl_t *endlvls;
jpc_enc_band_t *band;
jpc_enc_band_t *endbands;
jpc_enc_cblk_t *cblk;
jpc_enc_cblk_t *endcblks;
jpc_enc_tile_t *tile;
int prcno;
jpc_enc_prc_t *prc;

tile = enc->curtile;

endcomps = &tile->tcmpts[tile->numtcmpts];
for (comp = tile->tcmpts; comp != endcomps; ++comp) {
endlvls = &comp->rlvls[comp->numrlvls];
for (lvl = comp->rlvls; lvl != endlvls; ++lvl) {
if (!lvl->bands) {
continue;
}
endbands = &lvl->bands[lvl->numbands];
for (band = lvl->bands; band != endbands; ++band) {
if (!band->data) {
continue;
}
for (prcno = 0, prc = band->prcs; prcno < lvl->numprcs; ++prcno, ++prc) {
if (!prc->cblks) {
continue;
}
jpc_tagtree_copy(prc->incltree, prc->savincltree);
jpc_tagtree_copy(prc->nlibtree, prc->savnlibtree);
endcblks = &prc->cblks[prc->numcblks];
for (cblk = prc->cblks; cblk != endcblks; ++cblk) {
cblk->curpass = cblk->savedcurpass;
cblk->numencpasses = cblk->savednumencpasses;
cblk->numlenbits = cblk->savednumlenbits;
}
}
}
}
}
}

void jpc_init_t2state(jpc_enc_t *enc, int raflag)
{
/* It is assumed that band->numbps and cblk->numbps precomputed */

jpc_enc_tcmpt_t *comp;
jpc_enc_tcmpt_t *endcomps;
jpc_enc_rlvl_t *lvl;
jpc_enc_rlvl_t *endlvls;
jpc_enc_band_t *band;
jpc_enc_band_t *endbands;
jpc_enc_cblk_t *cblk;
jpc_enc_cblk_t *endcblks;
jpc_enc_pass_t *pass;
jpc_enc_pass_t *endpasses;
jpc_tagtreenode_t *leaf;
jpc_enc_tile_t *tile;
int prcno;
jpc_enc_prc_t *prc;

tile = enc->curtile;

endcomps = &tile->tcmpts[tile->numtcmpts];
for (comp = tile->tcmpts; comp != endcomps; ++comp) {
endlvls = &comp->rlvls[comp->numrlvls];
for (lvl = comp->rlvls; lvl != endlvls; ++lvl) {
if (!lvl->bands) {
continue;
}
endbands = &lvl->bands[lvl->numbands];
for (band = lvl->bands; band != endbands; ++band) {
if (!band->data) {
continue;
}
for (prcno = 0, prc = band->prcs; prcno < lvl->numprcs; ++prcno, ++prc) {
if (!prc->cblks) {
continue;
}
jpc_tagtree_reset(prc->incltree);
jpc_tagtree_reset(prc->nlibtree);
endcblks = &prc->cblks[prc->numcblks];
for (cblk = prc->cblks; cblk != endcblks; ++cblk) {
if (jas_stream_rewind(cblk->stream)) {
assert(0);
}
cblk->curpass = (cblk->numpasses > 0) ? cblk->passes : 0;
cblk->numencpasses = 0;
cblk->numlenbits = 3;
cblk->numimsbs = band->numbps - cblk->numbps;
assert(cblk->numimsbs >= 0);
leaf = jpc_tagtree_getleaf(prc->nlibtree, cblk - prc->cblks);
jpc_tagtree_setvalue(prc->nlibtree, leaf, cblk->numimsbs);

if (raflag) {
endpasses = &cblk->passes[cblk->numpasses];
for (pass = cblk->passes; pass != endpasses; ++pass) {
pass->lyrno = -1;
pass->lyrno = 0;
}
}
}
}
}
}
}

}

jpc_pi_t *jpc_enc_pi_create(jpc_enc_cp_t *cp, jpc_enc_tile_t *tile)
{
jpc_pi_t *pi;
int compno;
jpc_picomp_t *picomp;
jpc_pirlvl_t *pirlvl;
jpc_enc_tcmpt_t *tcomp;
int rlvlno;
jpc_enc_rlvl_t *rlvl;
int prcno;
int *prclyrno;

if (!(pi = jpc_pi_create0())) {
return 0;
}
pi->pktno = -1;
pi->numcomps = cp->numcmpts;
if (!(pi->picomps = jas_malloc(pi->numcomps * sizeof(jpc_picomp_t)))) {
jpc_pi_destroy(pi);
return 0;
}
for (compno = 0, picomp = pi->picomps; compno < pi->numcomps; ++compno,
++picomp) {
picomp->pirlvls = 0;
}

for (compno = 0, tcomp = tile->tcmpts, picomp = pi->picomps;
compno < pi->numcomps; ++compno, ++tcomp, ++picomp) {
picomp->numrlvls = tcomp->numrlvls;
if (!(picomp->pirlvls = jas_malloc(picomp->numrlvls *
sizeof(jpc_pirlvl_t)))) {
jpc_pi_destroy(pi);
return 0;
}
for (rlvlno = 0, pirlvl = picomp->pirlvls; rlvlno <
picomp->numrlvls; ++rlvlno, ++pirlvl) {
pirlvl->prclyrnos = 0;
}
for (rlvlno = 0, pirlvl = picomp->pirlvls, rlvl = tcomp->rlvls;
rlvlno < picomp->numrlvls; ++rlvlno, ++pirlvl, ++rlvl) {
/* XXX sizeof(long) should be sizeof different type */
pirlvl->numprcs = rlvl->numprcs;
if (rlvl->numprcs) {
if (!(pirlvl->prclyrnos = jas_malloc(pirlvl->numprcs *
sizeof(long)))) {
jpc_pi_destroy(pi);
return 0;
}
} else {
pirlvl->prclyrnos = 0;
}
}
}

pi->maxrlvls = 0;
for (compno = 0, tcomp = tile->tcmpts, picomp = pi->picomps;
compno < pi->numcomps; ++compno, ++tcomp, ++picomp) {
picomp->hsamp = cp->ccps[compno].sampgrdstepx;
picomp->vsamp = cp->ccps[compno].sampgrdstepy;
for (rlvlno = 0, pirlvl = picomp->pirlvls, rlvl = tcomp->rlvls;
rlvlno < picomp->numrlvls; ++rlvlno, ++pirlvl, ++rlvl) {
pirlvl->prcwidthexpn = rlvl->prcwidthexpn;
pirlvl->prcheightexpn = rlvl->prcheightexpn;
for (prcno = 0, prclyrno = pirlvl->prclyrnos;
prcno < pirlvl->numprcs; ++prcno, ++prclyrno) {
*prclyrno = 0;
}
pirlvl->numhprcs = rlvl->numhprcs;
}
if (pi->maxrlvls < tcomp->numrlvls) {
pi->maxrlvls = tcomp->numrlvls;
}
}

pi->numlyrs = tile->numlyrs;
pi->xstart = tile->tlx;
pi->ystart = tile->tly;
pi->xend = tile->brx;
pi->yend = tile->bry;

pi->picomp = 0;
pi->pirlvl = 0;
pi->x = 0;
pi->y = 0;
pi->compno = 0;
pi->rlvlno = 0;
pi->prcno = 0;
pi->lyrno = 0;
pi->xstep = 0;
pi->ystep = 0;

pi->pchgno = -1;

pi->defaultpchg.prgord = tile->prg;
pi->defaultpchg.compnostart = 0;
pi->defaultpchg.compnoend = pi->numcomps;
pi->defaultpchg.rlvlnostart = 0;
pi->defaultpchg.rlvlnoend = pi->maxrlvls;
pi->defaultpchg.lyrnoend = pi->numlyrs;
pi->pchg = 0;

pi->valid = 0;

return pi;
}

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(root)/tools/osframework/source/ImageLib/jpeg2000/jpc_t2enc.c @ 1812 - Rev 244