1 /*
2 * Copyright (c) 1999-2000 Image Power, Inc. and the University of
3 * British Columbia.
4 * Copyright (c) 2001-2003 Michael David Adams.
5 * All rights reserved.
6 */
7
8 /* __START_OF_JASPER_LICENSE__
9 *
10 * JasPer License Version 2.0
11 *
12 * Copyright (c) 2001-2006 Michael David Adams
13 * Copyright (c) 1999-2000 Image Power, Inc.
14 * Copyright (c) 1999-2000 The University of British Columbia
15 *
16 * All rights reserved.
17 *
18 * Permission is hereby granted, free of charge, to any person (the
19 * "User") obtaining a copy of this software and associated documentation
20 * files (the "Software"), to deal in the Software without restriction,
21 * including without limitation the rights to use, copy, modify, merge,
22 * publish, distribute, and/or sell copies of the Software, and to permit
23 * persons to whom the Software is furnished to do so, subject to the
24 * following conditions:
25 *
26 * 1. The above copyright notices and this permission notice (which
27 * includes the disclaimer below) shall be included in all copies or
28 * substantial portions of the Software.
29 *
30 * 2. The name of a copyright holder shall not be used to endorse or
31 * promote products derived from the Software without specific prior
32 * written permission.
33 *
34 * THIS DISCLAIMER OF WARRANTY CONSTITUTES AN ESSENTIAL PART OF THIS
35 * LICENSE. NO USE OF THE SOFTWARE IS AUTHORIZED HEREUNDER EXCEPT UNDER
36 * THIS DISCLAIMER. THE SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS
37 * "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING
38 * BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A
39 * PARTICULAR PURPOSE AND NONINFRINGEMENT OF THIRD PARTY RIGHTS. IN NO
40 * EVENT SHALL THE COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, OR ANY SPECIAL
41 * INDIRECT OR CONSEQUENTIAL DAMAGES, OR ANY DAMAGES WHATSOEVER RESULTING
42 * FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT,
43 * NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION
44 * WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. NO ASSURANCES ARE
45 * PROVIDED BY THE COPYRIGHT HOLDERS THAT THE SOFTWARE DOES NOT INFRINGE
46 * THE PATENT OR OTHER INTELLECTUAL PROPERTY RIGHTS OF ANY OTHER ENTITY.
47 * EACH COPYRIGHT HOLDER DISCLAIMS ANY LIABILITY TO THE USER FOR CLAIMS
48 * BROUGHT BY ANY OTHER ENTITY BASED ON INFRINGEMENT OF INTELLECTUAL
49 * PROPERTY RIGHTS OR OTHERWISE. AS A CONDITION TO EXERCISING THE RIGHTS
50 * GRANTED HEREUNDER, EACH USER HEREBY ASSUMES SOLE RESPONSIBILITY TO SECURE
51 * ANY OTHER INTELLECTUAL PROPERTY RIGHTS NEEDED, IF ANY. THE SOFTWARE
52 * IS NOT FAULT-TOLERANT AND IS NOT INTENDED FOR USE IN MISSION-CRITICAL
53 * SYSTEMS, SUCH AS THOSE USED IN THE OPERATION OF NUCLEAR FACILITIES,
54 * AIRCRAFT NAVIGATION OR COMMUNICATION SYSTEMS, AIR TRAFFIC CONTROL
55 * SYSTEMS, DIRECT LIFE SUPPORT MACHINES, OR WEAPONS SYSTEMS, IN WHICH
56 * THE FAILURE OF THE SOFTWARE OR SYSTEM COULD LEAD DIRECTLY TO DEATH,
57 * PERSONAL INJURY, OR SEVERE PHYSICAL OR ENVIRONMENTAL DAMAGE ("HIGH
58 * RISK ACTIVITIES"). THE COPYRIGHT HOLDERS SPECIFICALLY DISCLAIM ANY
59 * EXPRESS OR IMPLIED WARRANTY OF FITNESS FOR HIGH RISK ACTIVITIES.
60 *
61 * __END_OF_JASPER_LICENSE__
62 */
63
64 /*
65 * Tier 2 Encoder
66 *
67 * $Id$
68 */
69
70 /******************************************************************************\
71 * Includes.
72 \******************************************************************************/
73
74 #include <stdio.h>
75 #include <stdlib.h>
76 #include <assert.h>
77
78 #include "jasper/jas_fix.h"
79 #include "jasper/jas_malloc.h"
80 #include "jasper/jas_math.h"
81 #include "jasper/jas_debug.h"
82
83 #include "jpc_flt.h"
84 #include "jpc_t2enc.h"
85 #include "jpc_t2cod.h"
86 #include "jpc_tagtree.h"
87 #include "jpc_enc.h"
88 #include "jpc_math.h"
89
90 /******************************************************************************\
91 * Code.
92 \******************************************************************************/
93
jpc_putcommacode(jpc_bitstream_t * out,int n)94 static int jpc_putcommacode(jpc_bitstream_t *out, int n)
95 {
96 assert(n >= 0);
97
98 while (--n >= 0) {
99 if (jpc_bitstream_putbit(out, 1) == EOF) {
100 return -1;
101 }
102 }
103 if (jpc_bitstream_putbit(out, 0) == EOF) {
104 return -1;
105 }
106 return 0;
107 }
108
jpc_putnumnewpasses(jpc_bitstream_t * out,int n)109 static int jpc_putnumnewpasses(jpc_bitstream_t *out, int n)
110 {
111 int ret;
112
113 if (n <= 0) {
114 return -1;
115 } else if (n == 1) {
116 ret = jpc_bitstream_putbit(out, 0);
117 } else if (n == 2) {
118 ret = jpc_bitstream_putbits(out, 2, 2);
119 } else if (n <= 5) {
120 ret = jpc_bitstream_putbits(out, 4, 0xc | (n - 3));
121 } else if (n <= 36) {
122 ret = jpc_bitstream_putbits(out, 9, 0x1e0 | (n - 6));
123 } else if (n <= 164) {
124 ret = jpc_bitstream_putbits(out, 16, 0xff80 | (n - 37));
125 } else {
126 /* The standard has no provision for encoding a larger value.
127 In practice, however, it is highly unlikely that this
128 limitation will ever be encountered. */
129 return -1;
130 }
131
132 return (ret != EOF) ? 0 : (-1);
133 }
134
jpc_enc_encpkts(jpc_enc_t * enc,jas_stream_t * out)135 int jpc_enc_encpkts(jpc_enc_t *enc, jas_stream_t *out)
136 {
137 jpc_enc_tile_t *tile;
138 jpc_pi_t *pi;
139
140 tile = enc->curtile;
141
142 jpc_init_t2state(enc, 0);
143 pi = tile->pi;
144 jpc_pi_init(pi);
145
146 if (!jpc_pi_next(pi)) {
147 for (;;) {
148 if (jpc_enc_encpkt(enc, out, jpc_pi_cmptno(pi), jpc_pi_rlvlno(pi),
149 jpc_pi_prcno(pi), jpc_pi_lyrno(pi))) {
150 return -1;
151 }
152 if (jpc_pi_next(pi)) {
153 break;
154 }
155 }
156 }
157
158 return 0;
159 }
160
jpc_enc_encpkt(jpc_enc_t * enc,jas_stream_t * out,int compno,int lvlno,int prcno,int lyrno)161 int jpc_enc_encpkt(jpc_enc_t *enc, jas_stream_t *out, int compno, int lvlno, int prcno, int lyrno)
162 {
163 jpc_enc_tcmpt_t *comp;
164 jpc_enc_rlvl_t *lvl;
165 jpc_enc_band_t *band;
166 jpc_enc_band_t *endbands;
167 jpc_enc_cblk_t *cblk;
168 jpc_enc_cblk_t *endcblks;
169 jpc_bitstream_t *outb;
170 jpc_enc_pass_t *pass;
171 jpc_enc_pass_t *startpass;
172 jpc_enc_pass_t *lastpass;
173 jpc_enc_pass_t *endpass;
174 jpc_enc_pass_t *endpasses;
175 int i;
176 int included;
177 int ret;
178 jpc_tagtreenode_t *leaf;
179 int n;
180 int t1;
181 int t2;
182 int adjust;
183 int maxadjust;
184 int datalen;
185 int numnewpasses;
186 int passcount;
187 jpc_enc_tile_t *tile;
188 jpc_enc_prc_t *prc;
189 jpc_enc_cp_t *cp;
190 jpc_ms_t *ms;
191
192 tile = enc->curtile;
193 cp = enc->cp;
194
195 if (cp->tcp.csty & JPC_COD_SOP) {
196 if (!(ms = jpc_ms_create(JPC_MS_SOP))) {
197 return -1;
198 }
199 ms->parms.sop.seqno = jpc_pi_getind(tile->pi);
200 if (jpc_putms(out, enc->cstate, ms)) {
201 return -1;
202 }
203 jpc_ms_destroy(ms);
204 }
205
206 outb = jpc_bitstream_sopen(out, "w+");
207 assert(outb);
208
209 if (jpc_bitstream_putbit(outb, 1) == EOF) {
210 return -1;
211 }
212 JAS_DBGLOG(10, ("\n"));
213 JAS_DBGLOG(10, ("present. "));
214
215 comp = &tile->tcmpts[compno];
216 lvl = &comp->rlvls[lvlno];
217 endbands = &lvl->bands[lvl->numbands];
218 for (band = lvl->bands; band != endbands; ++band) {
219 if (!band->data) {
220 continue;
221 }
222 prc = &band->prcs[prcno];
223 if (!prc->cblks) {
224 continue;
225 }
226
227 endcblks = &prc->cblks[prc->numcblks];
228 for (cblk = prc->cblks; cblk != endcblks; ++cblk) {
229 if (!lyrno) {
230 leaf = jpc_tagtree_getleaf(prc->nlibtree, cblk - prc->cblks);
231 jpc_tagtree_setvalue(prc->nlibtree, leaf, cblk->numimsbs);
232 }
233 pass = cblk->curpass;
234 included = (pass && pass->lyrno == lyrno);
235 if (included && (!cblk->numencpasses)) {
236 assert(pass->lyrno == lyrno);
237 leaf = jpc_tagtree_getleaf(prc->incltree,
238 cblk - prc->cblks);
239 jpc_tagtree_setvalue(prc->incltree, leaf, pass->lyrno);
240 }
241 }
242
243 endcblks = &prc->cblks[prc->numcblks];
244 for (cblk = prc->cblks; cblk != endcblks; ++cblk) {
245 pass = cblk->curpass;
246 included = (pass && pass->lyrno == lyrno);
247 if (!cblk->numencpasses) {
248 leaf = jpc_tagtree_getleaf(prc->incltree,
249 cblk - prc->cblks);
250 if (jpc_tagtree_encode(prc->incltree, leaf, lyrno
251 + 1, outb) < 0) {
252 return -1;
253 }
254 } else {
255 if (jpc_bitstream_putbit(outb, included) == EOF) {
256 return -1;
257 }
258 }
259 JAS_DBGLOG(10, ("included=%d ", included));
260 if (!included) {
261 continue;
262 }
263 if (!cblk->numencpasses) {
264 i = 1;
265 leaf = jpc_tagtree_getleaf(prc->nlibtree, cblk - prc->cblks);
266 for (;;) {
267 if ((ret = jpc_tagtree_encode(prc->nlibtree, leaf, i, outb)) < 0) {
268 return -1;
269 }
270 if (ret) {
271 break;
272 }
273 ++i;
274 }
275 assert(leaf->known_ && i == leaf->value_ + 1);
276 }
277
278 endpasses = &cblk->passes[cblk->numpasses];
279 startpass = pass;
280 endpass = startpass;
281 while (endpass != endpasses && endpass->lyrno == lyrno){
282 ++endpass;
283 }
284 numnewpasses = endpass - startpass;
285 if (jpc_putnumnewpasses(outb, numnewpasses)) {
286 return -1;
287 }
288 JAS_DBGLOG(10, ("numnewpasses=%d ", numnewpasses));
289
290 lastpass = endpass - 1;
291 n = startpass->start;
292 passcount = 1;
293 maxadjust = 0;
294 for (pass = startpass; pass != endpass; ++pass) {
295 if (pass->term || pass == lastpass) {
296 datalen = pass->end - n;
297 t1 = jpc_firstone(datalen) + 1;
298 t2 = cblk->numlenbits + jpc_floorlog2(passcount);
299 adjust = JAS_MAX(t1 - t2, 0);
300 maxadjust = JAS_MAX(adjust, maxadjust);
301 n += datalen;
302 passcount = 1;
303 } else {
304 ++passcount;
305 }
306 }
307 if (jpc_putcommacode(outb, maxadjust)) {
308 return -1;
309 }
310 cblk->numlenbits += maxadjust;
311
312 lastpass = endpass - 1;
313 n = startpass->start;
314 passcount = 1;
315 for (pass = startpass; pass != endpass; ++pass) {
316 if (pass->term || pass == lastpass) {
317 datalen = pass->end - n;
318 assert(jpc_firstone(datalen) < cblk->numlenbits + jpc_floorlog2(passcount));
319 if (jpc_bitstream_putbits(outb, cblk->numlenbits + jpc_floorlog2(passcount), datalen) == EOF) {
320 return -1;
321 }
322 n += datalen;
323 passcount = 1;
324 } else {
325 ++passcount;
326 }
327 }
328 }
329 }
330
331 jpc_bitstream_outalign(outb, 0);
332 jpc_bitstream_close(outb);
333
334 if (cp->tcp.csty & JPC_COD_EPH) {
335 if (!(ms = jpc_ms_create(JPC_MS_EPH))) {
336 return -1;
337 }
338 jpc_putms(out, enc->cstate, ms);
339 jpc_ms_destroy(ms);
340 }
341
342 comp = &tile->tcmpts[compno];
343 lvl = &comp->rlvls[lvlno];
344 endbands = &lvl->bands[lvl->numbands];
345 for (band = lvl->bands; band != endbands; ++band) {
346 if (!band->data) {
347 continue;
348 }
349 prc = &band->prcs[prcno];
350 if (!prc->cblks) {
351 continue;
352 }
353 endcblks = &prc->cblks[prc->numcblks];
354 for (cblk = prc->cblks; cblk != endcblks; ++cblk) {
355 pass = cblk->curpass;
356
357 if (!pass) {
358 continue;
359 }
360 if (pass->lyrno != lyrno) {
361 assert(pass->lyrno < 0 || pass->lyrno > lyrno);
362 continue;
363 }
364
365 endpasses = &cblk->passes[cblk->numpasses];
366 startpass = pass;
367 endpass = startpass;
368 while (endpass != endpasses && endpass->lyrno == lyrno){
369 ++endpass;
370 }
371 lastpass = endpass - 1;
372 numnewpasses = endpass - startpass;
373
374 jas_stream_seek(cblk->stream, startpass->start, SEEK_SET);
375 assert(jas_stream_tell(cblk->stream) == startpass->start);
376 if (jas_stream_copy(out, cblk->stream, lastpass->end - startpass->start)) {
377 return -1;
378 }
379 cblk->curpass = (endpass != endpasses) ? endpass : 0;
380 cblk->numencpasses += numnewpasses;
381
382 }
383 }
384
385 return 0;
386 }
387
jpc_save_t2state(jpc_enc_t * enc)388 void jpc_save_t2state(jpc_enc_t *enc)
389 {
390 /* stream pos in embedded T1 stream may be wrong since not saved/restored! */
391
392 jpc_enc_tcmpt_t *comp;
393 jpc_enc_tcmpt_t *endcomps;
394 jpc_enc_rlvl_t *lvl;
395 jpc_enc_rlvl_t *endlvls;
396 jpc_enc_band_t *band;
397 jpc_enc_band_t *endbands;
398 jpc_enc_cblk_t *cblk;
399 jpc_enc_cblk_t *endcblks;
400 jpc_enc_tile_t *tile;
401 int prcno;
402 jpc_enc_prc_t *prc;
403
404 tile = enc->curtile;
405
406 endcomps = &tile->tcmpts[tile->numtcmpts];
407 for (comp = tile->tcmpts; comp != endcomps; ++comp) {
408 endlvls = &comp->rlvls[comp->numrlvls];
409 for (lvl = comp->rlvls; lvl != endlvls; ++lvl) {
410 if (!lvl->bands) {
411 continue;
412 }
413 endbands = &lvl->bands[lvl->numbands];
414 for (band = lvl->bands; band != endbands; ++band) {
415 if (!band->data) {
416 continue;
417 }
418 for (prcno = 0, prc = band->prcs; prcno < lvl->numprcs; ++prcno, ++prc) {
419 if (!prc->cblks) {
420 continue;
421 }
422 jpc_tagtree_copy(prc->savincltree, prc->incltree);
423 jpc_tagtree_copy(prc->savnlibtree, prc->nlibtree);
424 endcblks = &prc->cblks[prc->numcblks];
425 for (cblk = prc->cblks; cblk != endcblks; ++cblk) {
426 cblk->savedcurpass = cblk->curpass;
427 cblk->savednumencpasses = cblk->numencpasses;
428 cblk->savednumlenbits = cblk->numlenbits;
429 }
430 }
431 }
432 }
433 }
434
435 }
436
jpc_restore_t2state(jpc_enc_t * enc)437 void jpc_restore_t2state(jpc_enc_t *enc)
438 {
439
440 jpc_enc_tcmpt_t *comp;
441 jpc_enc_tcmpt_t *endcomps;
442 jpc_enc_rlvl_t *lvl;
443 jpc_enc_rlvl_t *endlvls;
444 jpc_enc_band_t *band;
445 jpc_enc_band_t *endbands;
446 jpc_enc_cblk_t *cblk;
447 jpc_enc_cblk_t *endcblks;
448 jpc_enc_tile_t *tile;
449 int prcno;
450 jpc_enc_prc_t *prc;
451
452 tile = enc->curtile;
453
454 endcomps = &tile->tcmpts[tile->numtcmpts];
455 for (comp = tile->tcmpts; comp != endcomps; ++comp) {
456 endlvls = &comp->rlvls[comp->numrlvls];
457 for (lvl = comp->rlvls; lvl != endlvls; ++lvl) {
458 if (!lvl->bands) {
459 continue;
460 }
461 endbands = &lvl->bands[lvl->numbands];
462 for (band = lvl->bands; band != endbands; ++band) {
463 if (!band->data) {
464 continue;
465 }
466 for (prcno = 0, prc = band->prcs; prcno < lvl->numprcs; ++prcno, ++prc) {
467 if (!prc->cblks) {
468 continue;
469 }
470 jpc_tagtree_copy(prc->incltree, prc->savincltree);
471 jpc_tagtree_copy(prc->nlibtree, prc->savnlibtree);
472 endcblks = &prc->cblks[prc->numcblks];
473 for (cblk = prc->cblks; cblk != endcblks; ++cblk) {
474 cblk->curpass = cblk->savedcurpass;
475 cblk->numencpasses = cblk->savednumencpasses;
476 cblk->numlenbits = cblk->savednumlenbits;
477 }
478 }
479 }
480 }
481 }
482 }
483
jpc_init_t2state(jpc_enc_t * enc,int raflag)484 void jpc_init_t2state(jpc_enc_t *enc, int raflag)
485 {
486 /* It is assumed that band->numbps and cblk->numbps precomputed */
487
488 jpc_enc_tcmpt_t *comp;
489 jpc_enc_tcmpt_t *endcomps;
490 jpc_enc_rlvl_t *lvl;
491 jpc_enc_rlvl_t *endlvls;
492 jpc_enc_band_t *band;
493 jpc_enc_band_t *endbands;
494 jpc_enc_cblk_t *cblk;
495 jpc_enc_cblk_t *endcblks;
496 jpc_enc_pass_t *pass;
497 jpc_enc_pass_t *endpasses;
498 jpc_tagtreenode_t *leaf;
499 jpc_enc_tile_t *tile;
500 int prcno;
501 jpc_enc_prc_t *prc;
502
503 tile = enc->curtile;
504
505 endcomps = &tile->tcmpts[tile->numtcmpts];
506 for (comp = tile->tcmpts; comp != endcomps; ++comp) {
507 endlvls = &comp->rlvls[comp->numrlvls];
508 for (lvl = comp->rlvls; lvl != endlvls; ++lvl) {
509 if (!lvl->bands) {
510 continue;
511 }
512 endbands = &lvl->bands[lvl->numbands];
513 for (band = lvl->bands; band != endbands; ++band) {
514 if (!band->data) {
515 continue;
516 }
517 for (prcno = 0, prc = band->prcs; prcno < lvl->numprcs; ++prcno, ++prc) {
518 if (!prc->cblks) {
519 continue;
520 }
521 jpc_tagtree_reset(prc->incltree);
522 jpc_tagtree_reset(prc->nlibtree);
523 endcblks = &prc->cblks[prc->numcblks];
524 for (cblk = prc->cblks; cblk != endcblks; ++cblk) {
525 if (jas_stream_rewind(cblk->stream)) {
526 assert(0);
527 }
528 cblk->curpass = (cblk->numpasses > 0) ? cblk->passes : 0;
529 cblk->numencpasses = 0;
530 cblk->numlenbits = 3;
531 cblk->numimsbs = band->numbps - cblk->numbps;
532 assert(cblk->numimsbs >= 0);
533 leaf = jpc_tagtree_getleaf(prc->nlibtree, cblk - prc->cblks);
534 jpc_tagtree_setvalue(prc->nlibtree, leaf, cblk->numimsbs);
535
536 if (raflag) {
537 endpasses = &cblk->passes[cblk->numpasses];
538 for (pass = cblk->passes; pass != endpasses; ++pass) {
539 pass->lyrno = -1;
540 pass->lyrno = 0;
541 }
542 }
543 }
544 }
545 }
546 }
547 }
548
549 }
550
jpc_enc_pi_create(jpc_enc_cp_t * cp,jpc_enc_tile_t * tile)551 jpc_pi_t *jpc_enc_pi_create(jpc_enc_cp_t *cp, jpc_enc_tile_t *tile)
552 {
553 jpc_pi_t *pi;
554 int compno;
555 jpc_picomp_t *picomp;
556 jpc_pirlvl_t *pirlvl;
557 jpc_enc_tcmpt_t *tcomp;
558 int rlvlno;
559 jpc_enc_rlvl_t *rlvl;
560 int prcno;
561 int *prclyrno;
562
563 if (!(pi = jpc_pi_create0())) {
564 return 0;
565 }
566 pi->pktno = -1;
567 pi->numcomps = cp->numcmpts;
568 if (!(pi->picomps = jas_alloc2(pi->numcomps, sizeof(jpc_picomp_t)))) {
569 jpc_pi_destroy(pi);
570 return 0;
571 }
572 for (compno = 0, picomp = pi->picomps; compno < pi->numcomps; ++compno,
573 ++picomp) {
574 picomp->pirlvls = 0;
575 }
576
577 for (compno = 0, tcomp = tile->tcmpts, picomp = pi->picomps;
578 compno < pi->numcomps; ++compno, ++tcomp, ++picomp) {
579 picomp->numrlvls = tcomp->numrlvls;
580 if (!(picomp->pirlvls = jas_alloc2(picomp->numrlvls,
581 sizeof(jpc_pirlvl_t)))) {
582 jpc_pi_destroy(pi);
583 return 0;
584 }
585 for (rlvlno = 0, pirlvl = picomp->pirlvls; rlvlno <
586 picomp->numrlvls; ++rlvlno, ++pirlvl) {
587 pirlvl->prclyrnos = 0;
588 }
589 for (rlvlno = 0, pirlvl = picomp->pirlvls, rlvl = tcomp->rlvls;
590 rlvlno < picomp->numrlvls; ++rlvlno, ++pirlvl, ++rlvl) {
591 /* XXX sizeof(long) should be sizeof different type */
592 pirlvl->numprcs = rlvl->numprcs;
593 if (rlvl->numprcs) {
594 if (!(pirlvl->prclyrnos = jas_alloc2(pirlvl->numprcs,
595 sizeof(long)))) {
596 jpc_pi_destroy(pi);
597 return 0;
598 }
599 } else {
600 pirlvl->prclyrnos = 0;
601 }
602 }
603 }
604
605 pi->maxrlvls = 0;
606 for (compno = 0, tcomp = tile->tcmpts, picomp = pi->picomps;
607 compno < pi->numcomps; ++compno, ++tcomp, ++picomp) {
608 picomp->hsamp = cp->ccps[compno].sampgrdstepx;
609 picomp->vsamp = cp->ccps[compno].sampgrdstepy;
610 for (rlvlno = 0, pirlvl = picomp->pirlvls, rlvl = tcomp->rlvls;
611 rlvlno < picomp->numrlvls; ++rlvlno, ++pirlvl, ++rlvl) {
612 pirlvl->prcwidthexpn = rlvl->prcwidthexpn;
613 pirlvl->prcheightexpn = rlvl->prcheightexpn;
614 for (prcno = 0, prclyrno = pirlvl->prclyrnos;
615 prcno < pirlvl->numprcs; ++prcno, ++prclyrno) {
616 *prclyrno = 0;
617 }
618 pirlvl->numhprcs = rlvl->numhprcs;
619 }
620 if (pi->maxrlvls < tcomp->numrlvls) {
621 pi->maxrlvls = tcomp->numrlvls;
622 }
623 }
624
625 pi->numlyrs = tile->numlyrs;
626 pi->xstart = tile->tlx;
627 pi->ystart = tile->tly;
628 pi->xend = tile->brx;
629 pi->yend = tile->bry;
630
631 pi->picomp = 0;
632 pi->pirlvl = 0;
633 pi->x = 0;
634 pi->y = 0;
635 pi->compno = 0;
636 pi->rlvlno = 0;
637 pi->prcno = 0;
638 pi->lyrno = 0;
639 pi->xstep = 0;
640 pi->ystep = 0;
641
642 pi->pchgno = -1;
643
644 pi->defaultpchg.prgord = tile->prg;
645 pi->defaultpchg.compnostart = 0;
646 pi->defaultpchg.compnoend = pi->numcomps;
647 pi->defaultpchg.rlvlnostart = 0;
648 pi->defaultpchg.rlvlnoend = pi->maxrlvls;
649 pi->defaultpchg.lyrnoend = pi->numlyrs;
650 pi->pchg = 0;
651
652 pi->valid = 0;
653
654 return pi;
655 }
656