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comparison mupdf-source/thirdparty/openjpeg/src/lib/openjp2/t2.c @ 2:b50eed0cc0ef upstream

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ADD: MuPDF v1.26.7: the MuPDF source as downloaded by a default build of PyMuPDF 1.26.4. The directory name has changed: no version number in the expanded directory now.
author Franz Glasner <fzglas.hg@dom66.de>
date Mon, 15 Sep 2025 11:43:07 +0200
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1:1d09e1dec1d9 2:b50eed0cc0ef
1 /*
2 * The copyright in this software is being made available under the 2-clauses
3 * BSD License, included below. This software may be subject to other third
4 * party and contributor rights, including patent rights, and no such rights
5 * are granted under this license.
6 *
7 * Copyright (c) 2002-2014, Universite catholique de Louvain (UCL), Belgium
8 * Copyright (c) 2002-2014, Professor Benoit Macq
9 * Copyright (c) 2001-2003, David Janssens
10 * Copyright (c) 2002-2003, Yannick Verschueren
11 * Copyright (c) 2003-2007, Francois-Olivier Devaux
12 * Copyright (c) 2003-2014, Antonin Descampe
13 * Copyright (c) 2005, Herve Drolon, FreeImage Team
14 * Copyright (c) 2008, 2011-2012, Centre National d'Etudes Spatiales (CNES), FR
15 * Copyright (c) 2012, CS Systemes d'Information, France
16 * Copyright (c) 2017, IntoPIX SA <support@intopix.com>
17 * All rights reserved.
18 *
19 * Redistribution and use in source and binary forms, with or without
20 * modification, are permitted provided that the following conditions
21 * are met:
22 * 1. Redistributions of source code must retain the above copyright
23 * notice, this list of conditions and the following disclaimer.
24 * 2. Redistributions in binary form must reproduce the above copyright
25 * notice, this list of conditions and the following disclaimer in the
26 * documentation and/or other materials provided with the distribution.
27 *
28 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS `AS IS'
29 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
30 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
31 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
32 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
33 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
34 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
35 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
36 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
37 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
38 * POSSIBILITY OF SUCH DAMAGE.
39 */
40
41 #include "opj_includes.h"
42 #include "opj_common.h"
43
44
45 /** @defgroup T2 T2 - Implementation of a tier-2 coding */
46 /*@{*/
47
48 /** @name Local static functions */
49 /*@{*/
50
51 static void opj_t2_putcommacode(opj_bio_t *bio, OPJ_INT32 n);
52
53 static OPJ_UINT32 opj_t2_getcommacode(opj_bio_t *bio);
54 /**
55 Variable length code for signalling delta Zil (truncation point)
56 @param bio Bit Input/Output component
57 @param n delta Zil
58 */
59 static void opj_t2_putnumpasses(opj_bio_t *bio, OPJ_UINT32 n);
60 static OPJ_UINT32 opj_t2_getnumpasses(opj_bio_t *bio);
61
62 /**
63 Encode a packet of a tile to a destination buffer
64 @param tileno Number of the tile encoded
65 @param tile Tile for which to write the packets
66 @param tcp Tile coding parameters
67 @param pi Packet identity
68 @param dest Destination buffer
69 @param p_data_written FIXME DOC
70 @param len Length of the destination buffer
71 @param cstr_info Codestream information structure
72 @param p_t2_mode If == THRESH_CALC In Threshold calculation ,If == FINAL_PASS Final pass
73 @param p_manager the user event manager
74 @return
75 */
76 static OPJ_BOOL opj_t2_encode_packet(OPJ_UINT32 tileno,
77 opj_tcd_tile_t *tile,
78 opj_tcp_t *tcp,
79 opj_pi_iterator_t *pi,
80 OPJ_BYTE *dest,
81 OPJ_UINT32 * p_data_written,
82 OPJ_UINT32 len,
83 opj_codestream_info_t *cstr_info,
84 J2K_T2_MODE p_t2_mode,
85 opj_event_mgr_t *p_manager);
86
87 /**
88 Decode a packet of a tile from a source buffer
89 @param t2 T2 handle
90 @param tile Tile for which to write the packets
91 @param tcp Tile coding parameters
92 @param pi Packet identity
93 @param src Source buffer
94 @param data_read FIXME DOC
95 @param max_length FIXME DOC
96 @param pack_info Packet information
97 @param p_manager the user event manager
98
99 @return FIXME DOC
100 */
101 static OPJ_BOOL opj_t2_decode_packet(opj_t2_t* t2,
102 opj_tcd_tile_t *tile,
103 opj_tcp_t *tcp,
104 opj_pi_iterator_t *pi,
105 OPJ_BYTE *src,
106 OPJ_UINT32 * data_read,
107 OPJ_UINT32 max_length,
108 opj_packet_info_t *pack_info,
109 opj_event_mgr_t *p_manager);
110
111 static OPJ_BOOL opj_t2_skip_packet(opj_t2_t* p_t2,
112 opj_tcd_tile_t *p_tile,
113 opj_tcp_t *p_tcp,
114 opj_pi_iterator_t *p_pi,
115 OPJ_BYTE *p_src,
116 OPJ_UINT32 * p_data_read,
117 OPJ_UINT32 p_max_length,
118 opj_packet_info_t *p_pack_info,
119 opj_event_mgr_t *p_manager);
120
121 static OPJ_BOOL opj_t2_read_packet_header(opj_t2_t* p_t2,
122 opj_tcd_tile_t *p_tile,
123 opj_tcp_t *p_tcp,
124 opj_pi_iterator_t *p_pi,
125 OPJ_BOOL * p_is_data_present,
126 OPJ_BYTE *p_src_data,
127 OPJ_UINT32 * p_data_read,
128 OPJ_UINT32 p_max_length,
129 opj_packet_info_t *p_pack_info,
130 opj_event_mgr_t *p_manager);
131
132 static OPJ_BOOL opj_t2_read_packet_data(opj_t2_t* p_t2,
133 opj_tcd_tile_t *p_tile,
134 opj_pi_iterator_t *p_pi,
135 OPJ_BYTE *p_src_data,
136 OPJ_UINT32 * p_data_read,
137 OPJ_UINT32 p_max_length,
138 opj_packet_info_t *pack_info,
139 opj_event_mgr_t *p_manager);
140
141 static OPJ_BOOL opj_t2_skip_packet_data(opj_t2_t* p_t2,
142 opj_tcd_tile_t *p_tile,
143 opj_pi_iterator_t *p_pi,
144 OPJ_UINT32 * p_data_read,
145 OPJ_UINT32 p_max_length,
146 opj_packet_info_t *pack_info,
147 opj_event_mgr_t *p_manager);
148
149 /**
150 @param cblk
151 @param index
152 @param cblksty
153 @param first
154 */
155 static OPJ_BOOL opj_t2_init_seg(opj_tcd_cblk_dec_t* cblk,
156 OPJ_UINT32 index,
157 OPJ_UINT32 cblksty,
158 OPJ_UINT32 first);
159
160 /*@}*/
161
162 /*@}*/
163
164 /* ----------------------------------------------------------------------- */
165
166 /* #define RESTART 0x04 */
167 static void opj_t2_putcommacode(opj_bio_t *bio, OPJ_INT32 n)
168 {
169 while (--n >= 0) {
170 opj_bio_putbit(bio, 1);
171 }
172 opj_bio_putbit(bio, 0);
173 }
174
175 static OPJ_UINT32 opj_t2_getcommacode(opj_bio_t *bio)
176 {
177 OPJ_UINT32 n = 0;
178 while (opj_bio_read(bio, 1)) {
179 ++n;
180 }
181 return n;
182 }
183
184 static void opj_t2_putnumpasses(opj_bio_t *bio, OPJ_UINT32 n)
185 {
186 if (n == 1) {
187 opj_bio_putbit(bio, 0);
188 } else if (n == 2) {
189 opj_bio_write(bio, 2, 2);
190 } else if (n <= 5) {
191 opj_bio_write(bio, 0xc | (n - 3), 4);
192 } else if (n <= 36) {
193 opj_bio_write(bio, 0x1e0 | (n - 6), 9);
194 } else if (n <= 164) {
195 opj_bio_write(bio, 0xff80 | (n - 37), 16);
196 }
197 }
198
199 static OPJ_UINT32 opj_t2_getnumpasses(opj_bio_t *bio)
200 {
201 OPJ_UINT32 n;
202 if (!opj_bio_read(bio, 1)) {
203 return 1;
204 }
205 if (!opj_bio_read(bio, 1)) {
206 return 2;
207 }
208 if ((n = opj_bio_read(bio, 2)) != 3) {
209 return (3 + n);
210 }
211 if ((n = opj_bio_read(bio, 5)) != 31) {
212 return (6 + n);
213 }
214 return (37 + opj_bio_read(bio, 7));
215 }
216
217 /* ----------------------------------------------------------------------- */
218
219 OPJ_BOOL opj_t2_encode_packets(opj_t2_t* p_t2,
220 OPJ_UINT32 p_tile_no,
221 opj_tcd_tile_t *p_tile,
222 OPJ_UINT32 p_maxlayers,
223 OPJ_BYTE *p_dest,
224 OPJ_UINT32 * p_data_written,
225 OPJ_UINT32 p_max_len,
226 opj_codestream_info_t *cstr_info,
227 opj_tcd_marker_info_t* p_marker_info,
228 OPJ_UINT32 p_tp_num,
229 OPJ_INT32 p_tp_pos,
230 OPJ_UINT32 p_pino,
231 J2K_T2_MODE p_t2_mode,
232 opj_event_mgr_t *p_manager)
233 {
234 OPJ_BYTE *l_current_data = p_dest;
235 OPJ_UINT32 l_nb_bytes = 0;
236 OPJ_UINT32 compno;
237 OPJ_UINT32 poc;
238 opj_pi_iterator_t *l_pi = 00;
239 opj_pi_iterator_t *l_current_pi = 00;
240 opj_image_t *l_image = p_t2->image;
241 opj_cp_t *l_cp = p_t2->cp;
242 opj_tcp_t *l_tcp = &l_cp->tcps[p_tile_no];
243 OPJ_UINT32 pocno = (l_cp->rsiz == OPJ_PROFILE_CINEMA_4K) ? 2 : 1;
244 OPJ_UINT32 l_max_comp = l_cp->m_specific_param.m_enc.m_max_comp_size > 0 ?
245 l_image->numcomps : 1;
246 OPJ_UINT32 l_nb_pocs = l_tcp->numpocs + 1;
247
248 l_pi = opj_pi_initialise_encode(l_image, l_cp, p_tile_no, p_t2_mode, p_manager);
249 if (!l_pi) {
250 return OPJ_FALSE;
251 }
252
253 * p_data_written = 0;
254
255 if (p_t2_mode == THRESH_CALC) { /* Calculating threshold */
256 l_current_pi = l_pi;
257
258 for (compno = 0; compno < l_max_comp; ++compno) {
259 OPJ_UINT32 l_comp_len = 0;
260 l_current_pi = l_pi;
261
262 for (poc = 0; poc < pocno ; ++poc) {
263 OPJ_UINT32 l_tp_num = compno;
264
265 /* TODO MSD : check why this function cannot fail (cf. v1) */
266 opj_pi_create_encode(l_pi, l_cp, p_tile_no, poc, l_tp_num, p_tp_pos, p_t2_mode);
267
268 if (l_current_pi->poc.prg == OPJ_PROG_UNKNOWN) {
269 /* TODO ADE : add an error */
270 opj_pi_destroy(l_pi, l_nb_pocs);
271 return OPJ_FALSE;
272 }
273 while (opj_pi_next(l_current_pi)) {
274 if (l_current_pi->layno < p_maxlayers) {
275 l_nb_bytes = 0;
276
277 if (! opj_t2_encode_packet(p_tile_no, p_tile, l_tcp, l_current_pi,
278 l_current_data, &l_nb_bytes,
279 p_max_len, cstr_info,
280 p_t2_mode,
281 p_manager)) {
282 opj_pi_destroy(l_pi, l_nb_pocs);
283 return OPJ_FALSE;
284 }
285
286 l_comp_len += l_nb_bytes;
287 l_current_data += l_nb_bytes;
288 p_max_len -= l_nb_bytes;
289
290 * p_data_written += l_nb_bytes;
291 }
292 }
293
294 if (l_cp->m_specific_param.m_enc.m_max_comp_size) {
295 if (l_comp_len > l_cp->m_specific_param.m_enc.m_max_comp_size) {
296 opj_pi_destroy(l_pi, l_nb_pocs);
297 return OPJ_FALSE;
298 }
299 }
300
301 ++l_current_pi;
302 }
303 }
304 } else { /* t2_mode == FINAL_PASS */
305 opj_pi_create_encode(l_pi, l_cp, p_tile_no, p_pino, p_tp_num, p_tp_pos,
306 p_t2_mode);
307
308 l_current_pi = &l_pi[p_pino];
309 if (l_current_pi->poc.prg == OPJ_PROG_UNKNOWN) {
310 /* TODO ADE : add an error */
311 opj_pi_destroy(l_pi, l_nb_pocs);
312 return OPJ_FALSE;
313 }
314
315 if (p_marker_info && p_marker_info->need_PLT) {
316 /* One time use intended */
317 assert(p_marker_info->packet_count == 0);
318 assert(p_marker_info->p_packet_size == NULL);
319
320 p_marker_info->p_packet_size = (OPJ_UINT32*) opj_malloc(
321 opj_get_encoding_packet_count(l_image, l_cp, p_tile_no) * sizeof(OPJ_UINT32));
322 if (p_marker_info->p_packet_size == NULL) {
323 opj_pi_destroy(l_pi, l_nb_pocs);
324 return OPJ_FALSE;
325 }
326 }
327
328 while (opj_pi_next(l_current_pi)) {
329 if (l_current_pi->layno < p_maxlayers) {
330 l_nb_bytes = 0;
331
332 if (! opj_t2_encode_packet(p_tile_no, p_tile, l_tcp, l_current_pi,
333 l_current_data, &l_nb_bytes, p_max_len,
334 cstr_info, p_t2_mode, p_manager)) {
335 opj_pi_destroy(l_pi, l_nb_pocs);
336 return OPJ_FALSE;
337 }
338
339 l_current_data += l_nb_bytes;
340 p_max_len -= l_nb_bytes;
341
342 * p_data_written += l_nb_bytes;
343
344 if (p_marker_info && p_marker_info->need_PLT) {
345 p_marker_info->p_packet_size[p_marker_info->packet_count] = l_nb_bytes;
346 p_marker_info->packet_count ++;
347 }
348
349 /* INDEX >> */
350 if (cstr_info) {
351 if (cstr_info->index_write) {
352 opj_tile_info_t *info_TL = &cstr_info->tile[p_tile_no];
353 opj_packet_info_t *info_PK = &info_TL->packet[cstr_info->packno];
354 if (!cstr_info->packno) {
355 info_PK->start_pos = info_TL->end_header + 1;
356 } else {
357 info_PK->start_pos = ((l_cp->m_specific_param.m_enc.m_tp_on | l_tcp->POC) &&
358 info_PK->start_pos) ? info_PK->start_pos : info_TL->packet[cstr_info->packno -
359 1].end_pos + 1;
360 }
361 info_PK->end_pos = info_PK->start_pos + l_nb_bytes - 1;
362 info_PK->end_ph_pos += info_PK->start_pos -
363 1; /* End of packet header which now only represents the distance
364 to start of packet is incremented by value of start of packet*/
365 }
366
367 cstr_info->packno++;
368 }
369 /* << INDEX */
370 ++p_tile->packno;
371 }
372 }
373 }
374
375 opj_pi_destroy(l_pi, l_nb_pocs);
376
377 return OPJ_TRUE;
378 }
379
380 /* see issue 80 */
381 #if 0
382 #define JAS_FPRINTF fprintf
383 #else
384 /* issue 290 */
385 static void opj_null_jas_fprintf(FILE* file, const char * format, ...)
386 {
387 (void)file;
388 (void)format;
389 }
390 #define JAS_FPRINTF opj_null_jas_fprintf
391 #endif
392
393 OPJ_BOOL opj_t2_decode_packets(opj_tcd_t* tcd,
394 opj_t2_t *p_t2,
395 OPJ_UINT32 p_tile_no,
396 opj_tcd_tile_t *p_tile,
397 OPJ_BYTE *p_src,
398 OPJ_UINT32 * p_data_read,
399 OPJ_UINT32 p_max_len,
400 opj_codestream_index_t *p_cstr_index,
401 opj_event_mgr_t *p_manager)
402 {
403 OPJ_BYTE *l_current_data = p_src;
404 opj_pi_iterator_t *l_pi = 00;
405 OPJ_UINT32 pino;
406 opj_image_t *l_image = p_t2->image;
407 opj_cp_t *l_cp = p_t2->cp;
408 opj_tcp_t *l_tcp = &(p_t2->cp->tcps[p_tile_no]);
409 OPJ_UINT32 l_nb_bytes_read;
410 OPJ_UINT32 l_nb_pocs = l_tcp->numpocs + 1;
411 opj_pi_iterator_t *l_current_pi = 00;
412 #ifdef TODO_MSD
413 OPJ_UINT32 curtp = 0;
414 OPJ_UINT32 tp_start_packno;
415 #endif
416 opj_packet_info_t *l_pack_info = 00;
417 opj_image_comp_t* l_img_comp = 00;
418
419 OPJ_ARG_NOT_USED(p_cstr_index);
420
421 #ifdef TODO_MSD
422 if (p_cstr_index) {
423 l_pack_info = p_cstr_index->tile_index[p_tile_no].packet;
424 }
425 #endif
426
427 /* create a packet iterator */
428 l_pi = opj_pi_create_decode(l_image, l_cp, p_tile_no, p_manager);
429 if (!l_pi) {
430 return OPJ_FALSE;
431 }
432
433
434 l_current_pi = l_pi;
435
436 for (pino = 0; pino <= l_tcp->numpocs; ++pino) {
437
438 /* if the resolution needed is too low, one dim of the tilec could be equal to zero
439 * and no packets are used to decode this resolution and
440 * l_current_pi->resno is always >= p_tile->comps[l_current_pi->compno].minimum_num_resolutions
441 * and no l_img_comp->resno_decoded are computed
442 */
443 OPJ_BOOL* first_pass_failed = NULL;
444
445 if (l_current_pi->poc.prg == OPJ_PROG_UNKNOWN) {
446 /* TODO ADE : add an error */
447 opj_pi_destroy(l_pi, l_nb_pocs);
448 return OPJ_FALSE;
449 }
450
451 first_pass_failed = (OPJ_BOOL*)opj_malloc(l_image->numcomps * sizeof(OPJ_BOOL));
452 if (!first_pass_failed) {
453 opj_pi_destroy(l_pi, l_nb_pocs);
454 return OPJ_FALSE;
455 }
456 memset(first_pass_failed, OPJ_TRUE, l_image->numcomps * sizeof(OPJ_BOOL));
457
458 while (opj_pi_next(l_current_pi)) {
459 OPJ_BOOL skip_packet = OPJ_FALSE;
460 JAS_FPRINTF(stderr,
461 "packet offset=00000166 prg=%d cmptno=%02d rlvlno=%02d prcno=%03d lyrno=%02d\n\n",
462 l_current_pi->poc.prg1, l_current_pi->compno, l_current_pi->resno,
463 l_current_pi->precno, l_current_pi->layno);
464
465 /* If the packet layer is greater or equal than the maximum */
466 /* number of layers, skip the packet */
467 if (l_current_pi->layno >= l_tcp->num_layers_to_decode) {
468 skip_packet = OPJ_TRUE;
469 }
470 /* If the packet resolution number is greater than the minimum */
471 /* number of resolution allowed, skip the packet */
472 else if (l_current_pi->resno >=
473 p_tile->comps[l_current_pi->compno].minimum_num_resolutions) {
474 skip_packet = OPJ_TRUE;
475 } else {
476 /* If no precincts of any band intersects the area of interest, */
477 /* skip the packet */
478 OPJ_UINT32 bandno;
479 opj_tcd_tilecomp_t *tilec = &p_tile->comps[l_current_pi->compno];
480 opj_tcd_resolution_t *res = &tilec->resolutions[l_current_pi->resno];
481
482 skip_packet = OPJ_TRUE;
483 for (bandno = 0; bandno < res->numbands; ++bandno) {
484 opj_tcd_band_t* band = &res->bands[bandno];
485 opj_tcd_precinct_t* prec = &band->precincts[l_current_pi->precno];
486
487 if (opj_tcd_is_subband_area_of_interest(tcd,
488 l_current_pi->compno,
489 l_current_pi->resno,
490 band->bandno,
491 (OPJ_UINT32)prec->x0,
492 (OPJ_UINT32)prec->y0,
493 (OPJ_UINT32)prec->x1,
494 (OPJ_UINT32)prec->y1)) {
495 skip_packet = OPJ_FALSE;
496 break;
497 }
498 }
499 /*
500 printf("packet cmptno=%02d rlvlno=%02d prcno=%03d lyrno=%02d -> %s\n",
501 l_current_pi->compno, l_current_pi->resno,
502 l_current_pi->precno, l_current_pi->layno, skip_packet ? "skipped" : "kept");
503 */
504 }
505 if (!skip_packet) {
506 l_nb_bytes_read = 0;
507
508 first_pass_failed[l_current_pi->compno] = OPJ_FALSE;
509
510 if (! opj_t2_decode_packet(p_t2, p_tile, l_tcp, l_current_pi, l_current_data,
511 &l_nb_bytes_read, p_max_len, l_pack_info, p_manager)) {
512 opj_pi_destroy(l_pi, l_nb_pocs);
513 opj_free(first_pass_failed);
514 return OPJ_FALSE;
515 }
516
517 l_img_comp = &(l_image->comps[l_current_pi->compno]);
518 l_img_comp->resno_decoded = opj_uint_max(l_current_pi->resno,
519 l_img_comp->resno_decoded);
520 } else {
521 l_nb_bytes_read = 0;
522 if (! opj_t2_skip_packet(p_t2, p_tile, l_tcp, l_current_pi, l_current_data,
523 &l_nb_bytes_read, p_max_len, l_pack_info, p_manager)) {
524 opj_pi_destroy(l_pi, l_nb_pocs);
525 opj_free(first_pass_failed);
526 return OPJ_FALSE;
527 }
528 }
529
530 if (first_pass_failed[l_current_pi->compno]) {
531 l_img_comp = &(l_image->comps[l_current_pi->compno]);
532 if (l_img_comp->resno_decoded == 0) {
533 l_img_comp->resno_decoded =
534 p_tile->comps[l_current_pi->compno].minimum_num_resolutions - 1;
535 }
536 }
537
538 l_current_data += l_nb_bytes_read;
539 p_max_len -= l_nb_bytes_read;
540
541 /* INDEX >> */
542 #ifdef TODO_MSD
543 if (p_cstr_info) {
544 opj_tile_info_v2_t *info_TL = &p_cstr_info->tile[p_tile_no];
545 opj_packet_info_t *info_PK = &info_TL->packet[p_cstr_info->packno];
546 tp_start_packno = 0;
547 if (!p_cstr_info->packno) {
548 info_PK->start_pos = info_TL->end_header + 1;
549 } else if (info_TL->packet[p_cstr_info->packno - 1].end_pos >=
550 (OPJ_INT32)
551 p_cstr_info->tile[p_tile_no].tp[curtp].tp_end_pos) { /* New tile part */
552 info_TL->tp[curtp].tp_numpacks = p_cstr_info->packno -
553 tp_start_packno; /* Number of packets in previous tile-part */
554 tp_start_packno = p_cstr_info->packno;
555 curtp++;
556 info_PK->start_pos = p_cstr_info->tile[p_tile_no].tp[curtp].tp_end_header + 1;
557 } else {
558 info_PK->start_pos = (l_cp->m_specific_param.m_enc.m_tp_on &&
559 info_PK->start_pos) ? info_PK->start_pos : info_TL->packet[p_cstr_info->packno -
560 1].end_pos + 1;
561 }
562 info_PK->end_pos = info_PK->start_pos + l_nb_bytes_read - 1;
563 info_PK->end_ph_pos += info_PK->start_pos -
564 1; /* End of packet header which now only represents the distance */
565 ++p_cstr_info->packno;
566 }
567 #endif
568 /* << INDEX */
569 }
570 ++l_current_pi;
571
572 opj_free(first_pass_failed);
573 }
574 /* INDEX >> */
575 #ifdef TODO_MSD
576 if
577 (p_cstr_info) {
578 p_cstr_info->tile[p_tile_no].tp[curtp].tp_numpacks = p_cstr_info->packno -
579 tp_start_packno; /* Number of packets in last tile-part */
580 }
581 #endif
582 /* << INDEX */
583
584 /* don't forget to release pi */
585 opj_pi_destroy(l_pi, l_nb_pocs);
586 *p_data_read = (OPJ_UINT32)(l_current_data - p_src);
587 return OPJ_TRUE;
588 }
589
590 /* ----------------------------------------------------------------------- */
591
592 /**
593 * Creates a Tier 2 handle
594 *
595 * @param p_image Source or destination image
596 * @param p_cp Image coding parameters.
597 * @return a new T2 handle if successful, NULL otherwise.
598 */
599 opj_t2_t* opj_t2_create(opj_image_t *p_image, opj_cp_t *p_cp)
600 {
601 /* create the t2 structure */
602 opj_t2_t *l_t2 = (opj_t2_t*)opj_calloc(1, sizeof(opj_t2_t));
603 if (!l_t2) {
604 return NULL;
605 }
606
607 l_t2->image = p_image;
608 l_t2->cp = p_cp;
609
610 return l_t2;
611 }
612
613 void opj_t2_destroy(opj_t2_t *t2)
614 {
615 if (t2) {
616 opj_free(t2);
617 }
618 }
619
620 static OPJ_BOOL opj_t2_decode_packet(opj_t2_t* p_t2,
621 opj_tcd_tile_t *p_tile,
622 opj_tcp_t *p_tcp,
623 opj_pi_iterator_t *p_pi,
624 OPJ_BYTE *p_src,
625 OPJ_UINT32 * p_data_read,
626 OPJ_UINT32 p_max_length,
627 opj_packet_info_t *p_pack_info,
628 opj_event_mgr_t *p_manager)
629 {
630 OPJ_BOOL l_read_data;
631 OPJ_UINT32 l_nb_bytes_read = 0;
632 OPJ_UINT32 l_nb_total_bytes_read = 0;
633
634 *p_data_read = 0;
635
636 if (! opj_t2_read_packet_header(p_t2, p_tile, p_tcp, p_pi, &l_read_data, p_src,
637 &l_nb_bytes_read, p_max_length, p_pack_info, p_manager)) {
638 return OPJ_FALSE;
639 }
640
641 p_src += l_nb_bytes_read;
642 l_nb_total_bytes_read += l_nb_bytes_read;
643 p_max_length -= l_nb_bytes_read;
644
645 /* we should read data for the packet */
646 if (l_read_data) {
647 l_nb_bytes_read = 0;
648
649 if (! opj_t2_read_packet_data(p_t2, p_tile, p_pi, p_src, &l_nb_bytes_read,
650 p_max_length, p_pack_info, p_manager)) {
651 return OPJ_FALSE;
652 }
653
654 l_nb_total_bytes_read += l_nb_bytes_read;
655 }
656
657 *p_data_read = l_nb_total_bytes_read;
658
659 return OPJ_TRUE;
660 }
661
662 static OPJ_BOOL opj_t2_encode_packet(OPJ_UINT32 tileno,
663 opj_tcd_tile_t * tile,
664 opj_tcp_t * tcp,
665 opj_pi_iterator_t *pi,
666 OPJ_BYTE *dest,
667 OPJ_UINT32 * p_data_written,
668 OPJ_UINT32 length,
669 opj_codestream_info_t *cstr_info,
670 J2K_T2_MODE p_t2_mode,
671 opj_event_mgr_t *p_manager)
672 {
673 OPJ_UINT32 bandno, cblkno;
674 OPJ_BYTE* c = dest;
675 OPJ_UINT32 l_nb_bytes;
676 OPJ_UINT32 compno = pi->compno; /* component value */
677 OPJ_UINT32 resno = pi->resno; /* resolution level value */
678 OPJ_UINT32 precno = pi->precno; /* precinct value */
679 OPJ_UINT32 layno = pi->layno; /* quality layer value */
680 OPJ_UINT32 l_nb_blocks;
681 opj_tcd_band_t *band = 00;
682 opj_tcd_cblk_enc_t* cblk = 00;
683 opj_tcd_pass_t *pass = 00;
684
685 opj_tcd_tilecomp_t *tilec = &tile->comps[compno];
686 opj_tcd_resolution_t *res = &tilec->resolutions[resno];
687
688 opj_bio_t *bio = 00; /* BIO component */
689 #ifdef ENABLE_EMPTY_PACKET_OPTIMIZATION
690 OPJ_BOOL packet_empty = OPJ_TRUE;
691 #else
692 OPJ_BOOL packet_empty = OPJ_FALSE;
693 #endif
694
695 #ifdef DEBUG_VERBOSE
696 if (p_t2_mode == FINAL_PASS) {
697 fprintf(stderr,
698 "encode packet compono=%d, resno=%d, precno=%d, layno=%d\n",
699 compno, resno, precno, layno);
700 }
701 #endif
702
703 /* <SOP 0xff91> */
704 if (tcp->csty & J2K_CP_CSTY_SOP) {
705 if (length < 6) {
706 if (p_t2_mode == FINAL_PASS) {
707 opj_event_msg(p_manager, EVT_ERROR,
708 "opj_t2_encode_packet(): only %u bytes remaining in "
709 "output buffer. %u needed.\n",
710 length, 6);
711 }
712 return OPJ_FALSE;
713 }
714 c[0] = 255;
715 c[1] = 145;
716 c[2] = 0;
717 c[3] = 4;
718 #if 0
719 c[4] = (tile->packno % 65536) / 256;
720 c[5] = (tile->packno % 65536) % 256;
721 #else
722 c[4] = (tile->packno >> 8) & 0xff; /* packno is uint32_t */
723 c[5] = tile->packno & 0xff;
724 #endif
725 c += 6;
726 length -= 6;
727 }
728 /* </SOP> */
729
730 if (!layno) {
731 band = res->bands;
732
733 for (bandno = 0; bandno < res->numbands; ++bandno, ++band) {
734 opj_tcd_precinct_t *prc;
735
736 /* Skip empty bands */
737 if (opj_tcd_is_band_empty(band)) {
738 continue;
739 }
740
741 /* Avoid out of bounds access of https://github.com/uclouvain/openjpeg/issues/1294 */
742 /* but likely not a proper fix. */
743 if (precno >= res->pw * res->ph) {
744 opj_event_msg(p_manager, EVT_ERROR,
745 "opj_t2_encode_packet(): accessing precno=%u >= %u\n",
746 precno, res->pw * res->ph);
747 return OPJ_FALSE;
748 }
749
750 prc = &band->precincts[precno];
751 opj_tgt_reset(prc->incltree);
752 opj_tgt_reset(prc->imsbtree);
753
754 l_nb_blocks = prc->cw * prc->ch;
755 for (cblkno = 0; cblkno < l_nb_blocks; ++cblkno) {
756 cblk = &prc->cblks.enc[cblkno];
757
758 cblk->numpasses = 0;
759 opj_tgt_setvalue(prc->imsbtree, cblkno, band->numbps - (OPJ_INT32)cblk->numbps);
760 }
761 }
762 }
763
764 bio = opj_bio_create();
765 if (!bio) {
766 /* FIXME event manager error callback */
767 return OPJ_FALSE;
768 }
769 opj_bio_init_enc(bio, c, length);
770
771 #ifdef ENABLE_EMPTY_PACKET_OPTIMIZATION
772 /* WARNING: this code branch is disabled, since it has been reported that */
773 /* such packets cause decoding issues with cinema J2K hardware */
774 /* decoders: https://groups.google.com/forum/#!topic/openjpeg/M7M_fLX_Bco */
775
776 /* Check if the packet is empty */
777 /* Note: we could also skip that step and always write a packet header */
778 band = res->bands;
779 for (bandno = 0; bandno < res->numbands; ++bandno, ++band) {
780 opj_tcd_precinct_t *prc;
781 /* Skip empty bands */
782 if (opj_tcd_is_band_empty(band)) {
783 continue;
784 }
785
786 prc = &band->precincts[precno];
787 l_nb_blocks = prc->cw * prc->ch;
788 cblk = prc->cblks.enc;
789 for (cblkno = 0; cblkno < l_nb_blocks; cblkno++, ++cblk) {
790 opj_tcd_layer_t *layer = &cblk->layers[layno];
791
792 /* if cblk not included, go to the next cblk */
793 if (!layer->numpasses) {
794 continue;
795 }
796 packet_empty = OPJ_FALSE;
797 break;
798 }
799 if (!packet_empty) {
800 break;
801 }
802 }
803 #endif
804 opj_bio_putbit(bio, packet_empty ? 0 : 1); /* Empty header bit */
805
806 /* Writing Packet header */
807 band = res->bands;
808 for (bandno = 0; !packet_empty &&
809 bandno < res->numbands; ++bandno, ++band) {
810 opj_tcd_precinct_t *prc;
811
812 /* Skip empty bands */
813 if (opj_tcd_is_band_empty(band)) {
814 continue;
815 }
816
817 /* Avoid out of bounds access of https://github.com/uclouvain/openjpeg/issues/1297 */
818 /* but likely not a proper fix. */
819 if (precno >= res->pw * res->ph) {
820 opj_event_msg(p_manager, EVT_ERROR,
821 "opj_t2_encode_packet(): accessing precno=%u >= %u\n",
822 precno, res->pw * res->ph);
823 return OPJ_FALSE;
824 }
825
826 prc = &band->precincts[precno];
827 l_nb_blocks = prc->cw * prc->ch;
828 cblk = prc->cblks.enc;
829
830 for (cblkno = 0; cblkno < l_nb_blocks; ++cblkno) {
831 opj_tcd_layer_t *layer = &cblk->layers[layno];
832
833 if (!cblk->numpasses && layer->numpasses) {
834 opj_tgt_setvalue(prc->incltree, cblkno, (OPJ_INT32)layno);
835 }
836
837 ++cblk;
838 }
839
840 cblk = prc->cblks.enc;
841 for (cblkno = 0; cblkno < l_nb_blocks; cblkno++) {
842 opj_tcd_layer_t *layer = &cblk->layers[layno];
843 OPJ_UINT32 increment = 0;
844 OPJ_UINT32 nump = 0;
845 OPJ_UINT32 len = 0, passno;
846 OPJ_UINT32 l_nb_passes;
847
848 /* cblk inclusion bits */
849 if (!cblk->numpasses) {
850 opj_tgt_encode(bio, prc->incltree, cblkno, (OPJ_INT32)(layno + 1));
851 } else {
852 opj_bio_putbit(bio, layer->numpasses != 0);
853 }
854
855 /* if cblk not included, go to the next cblk */
856 if (!layer->numpasses) {
857 ++cblk;
858 continue;
859 }
860
861 /* if first instance of cblk --> zero bit-planes information */
862 if (!cblk->numpasses) {
863 cblk->numlenbits = 3;
864 opj_tgt_encode(bio, prc->imsbtree, cblkno, 999);
865 }
866
867 /* number of coding passes included */
868 opj_t2_putnumpasses(bio, layer->numpasses);
869 l_nb_passes = cblk->numpasses + layer->numpasses;
870 pass = cblk->passes + cblk->numpasses;
871
872 /* computation of the increase of the length indicator and insertion in the header */
873 for (passno = cblk->numpasses; passno < l_nb_passes; ++passno) {
874 ++nump;
875 len += pass->len;
876
877 if (pass->term || passno == (cblk->numpasses + layer->numpasses) - 1) {
878 increment = (OPJ_UINT32)opj_int_max((OPJ_INT32)increment,
879 opj_int_floorlog2((OPJ_INT32)len) + 1
880 - ((OPJ_INT32)cblk->numlenbits + opj_int_floorlog2((OPJ_INT32)nump)));
881 len = 0;
882 nump = 0;
883 }
884
885 ++pass;
886 }
887 opj_t2_putcommacode(bio, (OPJ_INT32)increment);
888
889 /* computation of the new Length indicator */
890 cblk->numlenbits += increment;
891
892 pass = cblk->passes + cblk->numpasses;
893 /* insertion of the codeword segment length */
894 for (passno = cblk->numpasses; passno < l_nb_passes; ++passno) {
895 nump++;
896 len += pass->len;
897
898 if (pass->term || passno == (cblk->numpasses + layer->numpasses) - 1) {
899 opj_bio_write(bio, (OPJ_UINT32)len,
900 cblk->numlenbits + (OPJ_UINT32)opj_int_floorlog2((OPJ_INT32)nump));
901 len = 0;
902 nump = 0;
903 }
904 ++pass;
905 }
906
907 ++cblk;
908 }
909 }
910
911 if (!opj_bio_flush(bio)) {
912 opj_bio_destroy(bio);
913 return OPJ_FALSE; /* modified to eliminate longjmp !! */
914 }
915
916 l_nb_bytes = (OPJ_UINT32)opj_bio_numbytes(bio);
917 c += l_nb_bytes;
918 length -= l_nb_bytes;
919
920 opj_bio_destroy(bio);
921
922 /* <EPH 0xff92> */
923 if (tcp->csty & J2K_CP_CSTY_EPH) {
924 if (length < 2) {
925 if (p_t2_mode == FINAL_PASS) {
926 opj_event_msg(p_manager, EVT_ERROR,
927 "opj_t2_encode_packet(): only %u bytes remaining in "
928 "output buffer. %u needed.\n",
929 length, 2);
930 }
931 return OPJ_FALSE;
932 }
933 c[0] = 255;
934 c[1] = 146;
935 c += 2;
936 length -= 2;
937 }
938 /* </EPH> */
939
940 /* << INDEX */
941 /* End of packet header position. Currently only represents the distance to start of packet
942 Will be updated later by incrementing with packet start value*/
943 if (cstr_info && cstr_info->index_write) {
944 opj_packet_info_t *info_PK = &cstr_info->tile[tileno].packet[cstr_info->packno];
945 info_PK->end_ph_pos = (OPJ_INT32)(c - dest);
946 }
947 /* INDEX >> */
948
949 /* Writing the packet body */
950 band = res->bands;
951 for (bandno = 0; !packet_empty && bandno < res->numbands; bandno++, ++band) {
952 opj_tcd_precinct_t *prc;
953
954 /* Skip empty bands */
955 if (opj_tcd_is_band_empty(band)) {
956 continue;
957 }
958
959 prc = &band->precincts[precno];
960 l_nb_blocks = prc->cw * prc->ch;
961 cblk = prc->cblks.enc;
962
963 for (cblkno = 0; cblkno < l_nb_blocks; ++cblkno) {
964 opj_tcd_layer_t *layer = &cblk->layers[layno];
965
966 if (!layer->numpasses) {
967 ++cblk;
968 continue;
969 }
970
971 if (layer->len > length) {
972 if (p_t2_mode == FINAL_PASS) {
973 opj_event_msg(p_manager, EVT_ERROR,
974 "opj_t2_encode_packet(): only %u bytes remaining in "
975 "output buffer. %u needed.\n",
976 length, layer->len);
977 }
978 return OPJ_FALSE;
979 }
980
981 if (p_t2_mode == FINAL_PASS) {
982 memcpy(c, layer->data, layer->len);
983 }
984 cblk->numpasses += layer->numpasses;
985 c += layer->len;
986 length -= layer->len;
987
988 /* << INDEX */
989 if (cstr_info && cstr_info->index_write) {
990 opj_packet_info_t *info_PK = &cstr_info->tile[tileno].packet[cstr_info->packno];
991 info_PK->disto += layer->disto;
992 if (cstr_info->D_max < info_PK->disto) {
993 cstr_info->D_max = info_PK->disto;
994 }
995 }
996
997 ++cblk;
998 /* INDEX >> */
999 }
1000 }
1001
1002 assert(c >= dest);
1003 * p_data_written += (OPJ_UINT32)(c - dest);
1004
1005 return OPJ_TRUE;
1006 }
1007
1008 static OPJ_BOOL opj_t2_skip_packet(opj_t2_t* p_t2,
1009 opj_tcd_tile_t *p_tile,
1010 opj_tcp_t *p_tcp,
1011 opj_pi_iterator_t *p_pi,
1012 OPJ_BYTE *p_src,
1013 OPJ_UINT32 * p_data_read,
1014 OPJ_UINT32 p_max_length,
1015 opj_packet_info_t *p_pack_info,
1016 opj_event_mgr_t *p_manager)
1017 {
1018 OPJ_BOOL l_read_data;
1019 OPJ_UINT32 l_nb_bytes_read = 0;
1020 OPJ_UINT32 l_nb_total_bytes_read = 0;
1021
1022 *p_data_read = 0;
1023
1024 if (! opj_t2_read_packet_header(p_t2, p_tile, p_tcp, p_pi, &l_read_data, p_src,
1025 &l_nb_bytes_read, p_max_length, p_pack_info, p_manager)) {
1026 return OPJ_FALSE;
1027 }
1028
1029 p_src += l_nb_bytes_read;
1030 l_nb_total_bytes_read += l_nb_bytes_read;
1031 p_max_length -= l_nb_bytes_read;
1032
1033 /* we should read data for the packet */
1034 if (l_read_data) {
1035 l_nb_bytes_read = 0;
1036
1037 if (! opj_t2_skip_packet_data(p_t2, p_tile, p_pi, &l_nb_bytes_read,
1038 p_max_length, p_pack_info, p_manager)) {
1039 return OPJ_FALSE;
1040 }
1041
1042 l_nb_total_bytes_read += l_nb_bytes_read;
1043 }
1044 *p_data_read = l_nb_total_bytes_read;
1045
1046 return OPJ_TRUE;
1047 }
1048
1049
1050 static OPJ_BOOL opj_t2_read_packet_header(opj_t2_t* p_t2,
1051 opj_tcd_tile_t *p_tile,
1052 opj_tcp_t *p_tcp,
1053 opj_pi_iterator_t *p_pi,
1054 OPJ_BOOL * p_is_data_present,
1055 OPJ_BYTE *p_src_data,
1056 OPJ_UINT32 * p_data_read,
1057 OPJ_UINT32 p_max_length,
1058 opj_packet_info_t *p_pack_info,
1059 opj_event_mgr_t *p_manager)
1060
1061 {
1062 /* loop */
1063 OPJ_UINT32 bandno, cblkno;
1064 OPJ_UINT32 l_nb_code_blocks;
1065 OPJ_UINT32 l_remaining_length;
1066 OPJ_UINT32 l_header_length;
1067 OPJ_UINT32 * l_modified_length_ptr = 00;
1068 OPJ_BYTE *l_current_data = p_src_data;
1069 opj_cp_t *l_cp = p_t2->cp;
1070 opj_bio_t *l_bio = 00; /* BIO component */
1071 opj_tcd_band_t *l_band = 00;
1072 opj_tcd_cblk_dec_t* l_cblk = 00;
1073 opj_tcd_resolution_t* l_res =
1074 &p_tile->comps[p_pi->compno].resolutions[p_pi->resno];
1075
1076 OPJ_BYTE *l_header_data = 00;
1077 OPJ_BYTE **l_header_data_start = 00;
1078
1079 OPJ_UINT32 l_present;
1080
1081 if (p_pi->layno == 0) {
1082 l_band = l_res->bands;
1083
1084 /* reset tagtrees */
1085 for (bandno = 0; bandno < l_res->numbands; ++bandno) {
1086 if (!opj_tcd_is_band_empty(l_band)) {
1087 opj_tcd_precinct_t *l_prc = &l_band->precincts[p_pi->precno];
1088 if (!(p_pi->precno < (l_band->precincts_data_size / sizeof(
1089 opj_tcd_precinct_t)))) {
1090 opj_event_msg(p_manager, EVT_ERROR, "Invalid precinct\n");
1091 return OPJ_FALSE;
1092 }
1093
1094
1095 opj_tgt_reset(l_prc->incltree);
1096 opj_tgt_reset(l_prc->imsbtree);
1097 l_cblk = l_prc->cblks.dec;
1098
1099 l_nb_code_blocks = l_prc->cw * l_prc->ch;
1100 for (cblkno = 0; cblkno < l_nb_code_blocks; ++cblkno) {
1101 l_cblk->numsegs = 0;
1102 l_cblk->real_num_segs = 0;
1103 ++l_cblk;
1104 }
1105 }
1106
1107 ++l_band;
1108 }
1109 }
1110
1111 /* SOP markers */
1112
1113 if (p_tcp->csty & J2K_CP_CSTY_SOP) {
1114 /* SOP markers are allowed (i.e. optional), just warn */
1115 if (p_max_length < 6) {
1116 opj_event_msg(p_manager, EVT_WARNING,
1117 "Not enough space for expected SOP marker\n");
1118 } else if ((*l_current_data) != 0xff || (*(l_current_data + 1) != 0x91)) {
1119 opj_event_msg(p_manager, EVT_WARNING, "Expected SOP marker\n");
1120 } else {
1121 l_current_data += 6;
1122 }
1123
1124 /** TODO : check the Nsop value */
1125 }
1126
1127 /*
1128 When the marker PPT/PPM is used the packet header are store in PPT/PPM marker
1129 This part deal with this characteristic
1130 step 1: Read packet header in the saved structure
1131 step 2: Return to codestream for decoding
1132 */
1133
1134 l_bio = opj_bio_create();
1135 if (! l_bio) {
1136 return OPJ_FALSE;
1137 }
1138
1139 if (l_cp->ppm == 1) { /* PPM */
1140 l_header_data_start = &l_cp->ppm_data;
1141 l_header_data = *l_header_data_start;
1142 l_modified_length_ptr = &(l_cp->ppm_len);
1143
1144 } else if (p_tcp->ppt == 1) { /* PPT */
1145 l_header_data_start = &(p_tcp->ppt_data);
1146 l_header_data = *l_header_data_start;
1147 l_modified_length_ptr = &(p_tcp->ppt_len);
1148 } else { /* Normal Case */
1149 l_header_data_start = &(l_current_data);
1150 l_header_data = *l_header_data_start;
1151 l_remaining_length = (OPJ_UINT32)(p_src_data + p_max_length - l_header_data);
1152 l_modified_length_ptr = &(l_remaining_length);
1153 }
1154
1155 opj_bio_init_dec(l_bio, l_header_data, *l_modified_length_ptr);
1156
1157 l_present = opj_bio_read(l_bio, 1);
1158 JAS_FPRINTF(stderr, "present=%d \n", l_present);
1159 if (!l_present) {
1160 /* TODO MSD: no test to control the output of this function*/
1161 opj_bio_inalign(l_bio);
1162 l_header_data += opj_bio_numbytes(l_bio);
1163 opj_bio_destroy(l_bio);
1164
1165 /* EPH markers */
1166 if (p_tcp->csty & J2K_CP_CSTY_EPH) {
1167 /* EPH markers are required */
1168 if ((*l_modified_length_ptr - (OPJ_UINT32)(l_header_data -
1169 *l_header_data_start)) < 2U) {
1170 opj_event_msg(p_manager, EVT_ERROR,
1171 "Not enough space for required EPH marker\n");
1172 return OPJ_FALSE;
1173 } else if ((*l_header_data) != 0xff || (*(l_header_data + 1) != 0x92)) {
1174 opj_event_msg(p_manager, EVT_ERROR, "Expected EPH marker\n");
1175 return OPJ_FALSE;
1176 } else {
1177 l_header_data += 2;
1178 }
1179 }
1180
1181 l_header_length = (OPJ_UINT32)(l_header_data - *l_header_data_start);
1182 *l_modified_length_ptr -= l_header_length;
1183 *l_header_data_start += l_header_length;
1184
1185 /* << INDEX */
1186 /* End of packet header position. Currently only represents the distance to start of packet
1187 Will be updated later by incrementing with packet start value */
1188 if (p_pack_info) {
1189 p_pack_info->end_ph_pos = (OPJ_INT32)(l_current_data - p_src_data);
1190 }
1191 /* INDEX >> */
1192
1193 * p_is_data_present = OPJ_FALSE;
1194 *p_data_read = (OPJ_UINT32)(l_current_data - p_src_data);
1195 return OPJ_TRUE;
1196 }
1197
1198 l_band = l_res->bands;
1199 for (bandno = 0; bandno < l_res->numbands; ++bandno, ++l_band) {
1200 opj_tcd_precinct_t *l_prc = &(l_band->precincts[p_pi->precno]);
1201
1202 if (opj_tcd_is_band_empty(l_band)) {
1203 continue;
1204 }
1205
1206 l_nb_code_blocks = l_prc->cw * l_prc->ch;
1207 l_cblk = l_prc->cblks.dec;
1208 for (cblkno = 0; cblkno < l_nb_code_blocks; cblkno++) {
1209 OPJ_UINT32 l_included, l_increment, l_segno;
1210 OPJ_INT32 n;
1211
1212 /* if cblk not yet included before --> inclusion tagtree */
1213 if (!l_cblk->numsegs) {
1214 l_included = opj_tgt_decode(l_bio, l_prc->incltree, cblkno,
1215 (OPJ_INT32)(p_pi->layno + 1));
1216 /* else one bit */
1217 } else {
1218 l_included = opj_bio_read(l_bio, 1);
1219 }
1220
1221 /* if cblk not included */
1222 if (!l_included) {
1223 l_cblk->numnewpasses = 0;
1224 ++l_cblk;
1225 JAS_FPRINTF(stderr, "included=%d \n", l_included);
1226 continue;
1227 }
1228
1229 /* if cblk not yet included --> zero-bitplane tagtree */
1230 if (!l_cblk->numsegs) {
1231 OPJ_UINT32 i = 0;
1232
1233 while (!opj_tgt_decode(l_bio, l_prc->imsbtree, cblkno, (OPJ_INT32)i)) {
1234 ++i;
1235 }
1236 l_cblk->Mb = (OPJ_UINT32)l_band->numbps;
1237 if ((OPJ_UINT32)l_band->numbps + 1 < i) {
1238 /* Not totally sure what we should do in that situation,
1239 * but that avoids the integer overflow of
1240 * https://github.com/uclouvain/openjpeg/pull/1488
1241 * while keeping the regression test suite happy.
1242 */
1243 l_cblk->numbps = (OPJ_UINT32)(l_band->numbps + 1 - (int)i);
1244 } else {
1245 l_cblk->numbps = (OPJ_UINT32)l_band->numbps + 1 - i;
1246 }
1247 l_cblk->numlenbits = 3;
1248 }
1249
1250 /* number of coding passes */
1251 l_cblk->numnewpasses = opj_t2_getnumpasses(l_bio);
1252 l_increment = opj_t2_getcommacode(l_bio);
1253
1254 /* length indicator increment */
1255 l_cblk->numlenbits += l_increment;
1256 l_segno = 0;
1257
1258 if (!l_cblk->numsegs) {
1259 if (! opj_t2_init_seg(l_cblk, l_segno, p_tcp->tccps[p_pi->compno].cblksty, 1)) {
1260 opj_bio_destroy(l_bio);
1261 return OPJ_FALSE;
1262 }
1263 } else {
1264 l_segno = l_cblk->numsegs - 1;
1265 if (l_cblk->segs[l_segno].numpasses == l_cblk->segs[l_segno].maxpasses) {
1266 ++l_segno;
1267 if (! opj_t2_init_seg(l_cblk, l_segno, p_tcp->tccps[p_pi->compno].cblksty, 0)) {
1268 opj_bio_destroy(l_bio);
1269 return OPJ_FALSE;
1270 }
1271 }
1272 }
1273 n = (OPJ_INT32)l_cblk->numnewpasses;
1274
1275 if ((p_tcp->tccps[p_pi->compno].cblksty & J2K_CCP_CBLKSTY_HT) != 0)
1276 do {
1277 OPJ_UINT32 bit_number;
1278 l_cblk->segs[l_segno].numnewpasses = l_segno == 0 ? 1 : (OPJ_UINT32)n;
1279 bit_number = l_cblk->numlenbits + opj_uint_floorlog2(
1280 l_cblk->segs[l_segno].numnewpasses);
1281 if (bit_number > 32) {
1282 opj_event_msg(p_manager, EVT_ERROR,
1283 "Invalid bit number %d in opj_t2_read_packet_header()\n",
1284 bit_number);
1285 opj_bio_destroy(l_bio);
1286 return OPJ_FALSE;
1287 }
1288 l_cblk->segs[l_segno].newlen = opj_bio_read(l_bio, bit_number);
1289 JAS_FPRINTF(stderr, "included=%d numnewpasses=%d increment=%d len=%d \n",
1290 l_included, l_cblk->segs[l_segno].numnewpasses, l_increment,
1291 l_cblk->segs[l_segno].newlen);
1292
1293 n -= (OPJ_INT32)l_cblk->segs[l_segno].numnewpasses;
1294 if (n > 0) {
1295 ++l_segno;
1296
1297 if (! opj_t2_init_seg(l_cblk, l_segno, p_tcp->tccps[p_pi->compno].cblksty, 0)) {
1298 opj_bio_destroy(l_bio);
1299 return OPJ_FALSE;
1300 }
1301 }
1302 } while (n > 0);
1303 else
1304 do {
1305 OPJ_UINT32 bit_number;
1306 l_cblk->segs[l_segno].numnewpasses = (OPJ_UINT32)opj_int_min((OPJ_INT32)(
1307 l_cblk->segs[l_segno].maxpasses - l_cblk->segs[l_segno].numpasses), n);
1308 bit_number = l_cblk->numlenbits + opj_uint_floorlog2(
1309 l_cblk->segs[l_segno].numnewpasses);
1310 if (bit_number > 32) {
1311 opj_event_msg(p_manager, EVT_ERROR,
1312 "Invalid bit number %d in opj_t2_read_packet_header()\n",
1313 bit_number);
1314 opj_bio_destroy(l_bio);
1315 return OPJ_FALSE;
1316 }
1317 l_cblk->segs[l_segno].newlen = opj_bio_read(l_bio, bit_number);
1318 JAS_FPRINTF(stderr, "included=%d numnewpasses=%d increment=%d len=%d \n",
1319 l_included, l_cblk->segs[l_segno].numnewpasses, l_increment,
1320 l_cblk->segs[l_segno].newlen);
1321
1322 n -= (OPJ_INT32)l_cblk->segs[l_segno].numnewpasses;
1323 if (n > 0) {
1324 ++l_segno;
1325
1326 if (! opj_t2_init_seg(l_cblk, l_segno, p_tcp->tccps[p_pi->compno].cblksty, 0)) {
1327 opj_bio_destroy(l_bio);
1328 return OPJ_FALSE;
1329 }
1330 }
1331 } while (n > 0);
1332
1333 ++l_cblk;
1334 }
1335 }
1336
1337 if (!opj_bio_inalign(l_bio)) {
1338 opj_bio_destroy(l_bio);
1339 return OPJ_FALSE;
1340 }
1341
1342 l_header_data += opj_bio_numbytes(l_bio);
1343 opj_bio_destroy(l_bio);
1344
1345 /* EPH markers */
1346 if (p_tcp->csty & J2K_CP_CSTY_EPH) {
1347 /* EPH markers are required */
1348 if ((*l_modified_length_ptr - (OPJ_UINT32)(l_header_data -
1349 *l_header_data_start)) < 2U) {
1350 opj_event_msg(p_manager, EVT_ERROR,
1351 "Not enough space for required EPH marker\n");
1352 return OPJ_FALSE;
1353 } else if ((*l_header_data) != 0xff || (*(l_header_data + 1) != 0x92)) {
1354 opj_event_msg(p_manager, EVT_ERROR, "Expected EPH marker\n");
1355 return OPJ_FALSE;
1356 } else {
1357 l_header_data += 2;
1358 }
1359 }
1360
1361 l_header_length = (OPJ_UINT32)(l_header_data - *l_header_data_start);
1362 JAS_FPRINTF(stderr, "hdrlen=%d \n", l_header_length);
1363 if (!l_header_length) {
1364 return OPJ_FALSE;
1365 }
1366 JAS_FPRINTF(stderr, "packet body\n");
1367 *l_modified_length_ptr -= l_header_length;
1368 *l_header_data_start += l_header_length;
1369
1370 /* << INDEX */
1371 /* End of packet header position. Currently only represents the distance to start of packet
1372 Will be updated later by incrementing with packet start value */
1373 if (p_pack_info) {
1374 p_pack_info->end_ph_pos = (OPJ_INT32)(l_current_data - p_src_data);
1375 }
1376 /* INDEX >> */
1377
1378 *p_is_data_present = OPJ_TRUE;
1379 *p_data_read = (OPJ_UINT32)(l_current_data - p_src_data);
1380
1381 return OPJ_TRUE;
1382 }
1383
1384 static OPJ_BOOL opj_t2_read_packet_data(opj_t2_t* p_t2,
1385 opj_tcd_tile_t *p_tile,
1386 opj_pi_iterator_t *p_pi,
1387 OPJ_BYTE *p_src_data,
1388 OPJ_UINT32 * p_data_read,
1389 OPJ_UINT32 p_max_length,
1390 opj_packet_info_t *pack_info,
1391 opj_event_mgr_t* p_manager)
1392 {
1393 OPJ_UINT32 bandno, cblkno;
1394 OPJ_UINT32 l_nb_code_blocks;
1395 OPJ_BYTE *l_current_data = p_src_data;
1396 opj_tcd_band_t *l_band = 00;
1397 opj_tcd_cblk_dec_t* l_cblk = 00;
1398 opj_tcd_resolution_t* l_res =
1399 &p_tile->comps[p_pi->compno].resolutions[p_pi->resno];
1400 OPJ_BOOL partial_buffer = OPJ_FALSE;
1401
1402 OPJ_ARG_NOT_USED(p_t2);
1403 OPJ_ARG_NOT_USED(pack_info);
1404
1405 l_band = l_res->bands;
1406 for (bandno = 0; bandno < l_res->numbands; ++bandno) {
1407 opj_tcd_precinct_t *l_prc = &l_band->precincts[p_pi->precno];
1408
1409 if ((l_band->x1 - l_band->x0 == 0) || (l_band->y1 - l_band->y0 == 0)) {
1410 ++l_band;
1411 continue;
1412 }
1413
1414 l_nb_code_blocks = l_prc->cw * l_prc->ch;
1415 l_cblk = l_prc->cblks.dec;
1416
1417 for (cblkno = 0; cblkno < l_nb_code_blocks; ++cblkno, ++l_cblk) {
1418 opj_tcd_seg_t *l_seg = 00;
1419
1420 if (!l_cblk->numnewpasses) {
1421 /* nothing to do */
1422 continue;
1423 }
1424
1425 if (partial_buffer || l_cblk->corrupted) {
1426 /* if a previous segment in this packet couldn't be decoded,
1427 * or if this code block was corrupted in a previous layer,
1428 * then mark it as corrupted.
1429 */
1430 l_cblk->numchunks = 0;
1431 l_cblk->corrupted = OPJ_TRUE;
1432 continue;
1433 }
1434
1435 if (!l_cblk->numsegs) {
1436 l_seg = l_cblk->segs;
1437 ++l_cblk->numsegs;
1438 } else {
1439 l_seg = &l_cblk->segs[l_cblk->numsegs - 1];
1440
1441 if (l_seg->numpasses == l_seg->maxpasses) {
1442 ++l_seg;
1443 ++l_cblk->numsegs;
1444 }
1445 }
1446
1447 do {
1448 /* Check possible overflow (on l_current_data only, assumes input args already checked) then size */
1449 if ((((OPJ_SIZE_T)l_current_data + (OPJ_SIZE_T)l_seg->newlen) <
1450 (OPJ_SIZE_T)l_current_data) ||
1451 (l_current_data + l_seg->newlen > p_src_data + p_max_length) ||
1452 (partial_buffer)) {
1453 if (p_t2->cp->strict) {
1454 opj_event_msg(p_manager, EVT_ERROR,
1455 "read: segment too long (%d) with max (%d) for codeblock %d (p=%d, b=%d, r=%d, c=%d)\n",
1456 l_seg->newlen, p_max_length, cblkno, p_pi->precno, bandno, p_pi->resno,
1457 p_pi->compno);
1458 return OPJ_FALSE;
1459 } else {
1460 opj_event_msg(p_manager, EVT_WARNING,
1461 "read: segment too long (%d) with max (%d) for codeblock %d (p=%d, b=%d, r=%d, c=%d)\n",
1462 l_seg->newlen, p_max_length, cblkno, p_pi->precno, bandno, p_pi->resno,
1463 p_pi->compno);
1464 /* skip this codeblock (and following ones in this
1465 * packet) since it is a partial read
1466 */
1467 partial_buffer = OPJ_TRUE;
1468 l_cblk->corrupted = OPJ_TRUE;
1469 l_cblk->numchunks = 0;
1470 break;
1471 }
1472 }
1473
1474 #ifdef USE_JPWL
1475 /* we need here a j2k handle to verify if making a check to
1476 the validity of cblocks parameters is selected from user (-W) */
1477
1478 /* let's check that we are not exceeding */
1479 if ((l_cblk->len + l_seg->newlen) > 8192) {
1480 opj_event_msg(p_manager, EVT_WARNING,
1481 "JPWL: segment too long (%d) for codeblock %d (p=%d, b=%d, r=%d, c=%d)\n",
1482 l_seg->newlen, cblkno, p_pi->precno, bandno, p_pi->resno, p_pi->compno);
1483 if (!JPWL_ASSUME) {
1484 opj_event_msg(p_manager, EVT_ERROR, "JPWL: giving up\n");
1485 return OPJ_FALSE;
1486 }
1487 l_seg->newlen = 8192 - l_cblk->len;
1488 opj_event_msg(p_manager, EVT_WARNING, " - truncating segment to %d\n",
1489 l_seg->newlen);
1490 break;
1491 };
1492
1493 #endif /* USE_JPWL */
1494
1495 if (l_cblk->numchunks == l_cblk->numchunksalloc) {
1496 OPJ_UINT32 l_numchunksalloc = l_cblk->numchunksalloc * 2 + 1;
1497 opj_tcd_seg_data_chunk_t* l_chunks =
1498 (opj_tcd_seg_data_chunk_t*)opj_realloc(l_cblk->chunks,
1499 l_numchunksalloc * sizeof(opj_tcd_seg_data_chunk_t));
1500 if (l_chunks == NULL) {
1501 opj_event_msg(p_manager, EVT_ERROR,
1502 "cannot allocate opj_tcd_seg_data_chunk_t* array");
1503 return OPJ_FALSE;
1504 }
1505 l_cblk->chunks = l_chunks;
1506 l_cblk->numchunksalloc = l_numchunksalloc;
1507 }
1508
1509 l_cblk->chunks[l_cblk->numchunks].data = l_current_data;
1510 l_cblk->chunks[l_cblk->numchunks].len = l_seg->newlen;
1511 l_cblk->numchunks ++;
1512
1513 l_current_data += l_seg->newlen;
1514 l_seg->len += l_seg->newlen;
1515 l_seg->numpasses += l_seg->numnewpasses;
1516 l_cblk->numnewpasses -= l_seg->numnewpasses;
1517
1518 l_seg->real_num_passes = l_seg->numpasses;
1519
1520 if (l_cblk->numnewpasses > 0) {
1521 ++l_seg;
1522 ++l_cblk->numsegs;
1523 }
1524 } while (l_cblk->numnewpasses > 0);
1525
1526 l_cblk->real_num_segs = l_cblk->numsegs;
1527
1528 } /* next code_block */
1529
1530 ++l_band;
1531 }
1532
1533 // return the number of bytes read
1534 if (partial_buffer) {
1535 *(p_data_read) = p_max_length;
1536 } else {
1537 *(p_data_read) = (OPJ_UINT32)(l_current_data - p_src_data);
1538 }
1539
1540 return OPJ_TRUE;
1541 }
1542
1543 static OPJ_BOOL opj_t2_skip_packet_data(opj_t2_t* p_t2,
1544 opj_tcd_tile_t *p_tile,
1545 opj_pi_iterator_t *p_pi,
1546 OPJ_UINT32 * p_data_read,
1547 OPJ_UINT32 p_max_length,
1548 opj_packet_info_t *pack_info,
1549 opj_event_mgr_t *p_manager)
1550 {
1551 OPJ_UINT32 bandno, cblkno;
1552 OPJ_UINT32 l_nb_code_blocks;
1553 opj_tcd_band_t *l_band = 00;
1554 opj_tcd_cblk_dec_t* l_cblk = 00;
1555 opj_tcd_resolution_t* l_res =
1556 &p_tile->comps[p_pi->compno].resolutions[p_pi->resno];
1557
1558 OPJ_ARG_NOT_USED(p_t2);
1559 OPJ_ARG_NOT_USED(pack_info);
1560
1561 *p_data_read = 0;
1562 l_band = l_res->bands;
1563
1564 for (bandno = 0; bandno < l_res->numbands; ++bandno) {
1565 opj_tcd_precinct_t *l_prc = &l_band->precincts[p_pi->precno];
1566
1567 if ((l_band->x1 - l_band->x0 == 0) || (l_band->y1 - l_band->y0 == 0)) {
1568 ++l_band;
1569 continue;
1570 }
1571
1572 l_nb_code_blocks = l_prc->cw * l_prc->ch;
1573 l_cblk = l_prc->cblks.dec;
1574
1575 for (cblkno = 0; cblkno < l_nb_code_blocks; ++cblkno) {
1576 opj_tcd_seg_t *l_seg = 00;
1577
1578 if (!l_cblk->numnewpasses) {
1579 /* nothing to do */
1580 ++l_cblk;
1581 continue;
1582 }
1583
1584 if (!l_cblk->numsegs) {
1585 l_seg = l_cblk->segs;
1586 ++l_cblk->numsegs;
1587 } else {
1588 l_seg = &l_cblk->segs[l_cblk->numsegs - 1];
1589
1590 if (l_seg->numpasses == l_seg->maxpasses) {
1591 ++l_seg;
1592 ++l_cblk->numsegs;
1593 }
1594 }
1595
1596 do {
1597 /* Check possible overflow then size */
1598 if (((*p_data_read + l_seg->newlen) < (*p_data_read)) ||
1599 ((*p_data_read + l_seg->newlen) > p_max_length)) {
1600 if (p_t2->cp->strict) {
1601 opj_event_msg(p_manager, EVT_ERROR,
1602 "skip: segment too long (%d) with max (%d) for codeblock %d (p=%d, b=%d, r=%d, c=%d)\n",
1603 l_seg->newlen, p_max_length, cblkno, p_pi->precno, bandno, p_pi->resno,
1604 p_pi->compno);
1605 return OPJ_FALSE;
1606 } else {
1607 opj_event_msg(p_manager, EVT_WARNING,
1608 "skip: segment too long (%d) with max (%d) for codeblock %d (p=%d, b=%d, r=%d, c=%d)\n",
1609 l_seg->newlen, p_max_length, cblkno, p_pi->precno, bandno, p_pi->resno,
1610 p_pi->compno);
1611
1612 *p_data_read = p_max_length;
1613 return OPJ_TRUE;
1614 }
1615 }
1616
1617 #ifdef USE_JPWL
1618 /* we need here a j2k handle to verify if making a check to
1619 the validity of cblocks parameters is selected from user (-W) */
1620
1621 /* let's check that we are not exceeding */
1622 if ((l_cblk->len + l_seg->newlen) > 8192) {
1623 opj_event_msg(p_manager, EVT_WARNING,
1624 "JPWL: segment too long (%d) for codeblock %d (p=%d, b=%d, r=%d, c=%d)\n",
1625 l_seg->newlen, cblkno, p_pi->precno, bandno, p_pi->resno, p_pi->compno);
1626 if (!JPWL_ASSUME) {
1627 opj_event_msg(p_manager, EVT_ERROR, "JPWL: giving up\n");
1628 return -999;
1629 }
1630 l_seg->newlen = 8192 - l_cblk->len;
1631 opj_event_msg(p_manager, EVT_WARNING, " - truncating segment to %d\n",
1632 l_seg->newlen);
1633 break;
1634 };
1635
1636 #endif /* USE_JPWL */
1637 JAS_FPRINTF(stderr, "p_data_read (%d) newlen (%d) \n", *p_data_read,
1638 l_seg->newlen);
1639 *(p_data_read) += l_seg->newlen;
1640
1641 l_seg->numpasses += l_seg->numnewpasses;
1642 l_cblk->numnewpasses -= l_seg->numnewpasses;
1643 if (l_cblk->numnewpasses > 0) {
1644 ++l_seg;
1645 ++l_cblk->numsegs;
1646 }
1647 } while (l_cblk->numnewpasses > 0);
1648
1649 ++l_cblk;
1650 }
1651
1652 ++l_band;
1653 }
1654
1655 return OPJ_TRUE;
1656 }
1657
1658
1659 static OPJ_BOOL opj_t2_init_seg(opj_tcd_cblk_dec_t* cblk,
1660 OPJ_UINT32 index,
1661 OPJ_UINT32 cblksty,
1662 OPJ_UINT32 first)
1663 {
1664 opj_tcd_seg_t* seg = 00;
1665 OPJ_UINT32 l_nb_segs = index + 1;
1666
1667 if (l_nb_segs > cblk->m_current_max_segs) {
1668 opj_tcd_seg_t* new_segs;
1669 OPJ_UINT32 l_m_current_max_segs = cblk->m_current_max_segs +
1670 OPJ_J2K_DEFAULT_NB_SEGS;
1671
1672 new_segs = (opj_tcd_seg_t*) opj_realloc(cblk->segs,
1673 l_m_current_max_segs * sizeof(opj_tcd_seg_t));
1674 if (! new_segs) {
1675 /* opj_event_msg(p_manager, EVT_ERROR, "Not enough memory to initialize segment %d\n", l_nb_segs); */
1676 return OPJ_FALSE;
1677 }
1678 cblk->segs = new_segs;
1679 memset(new_segs + cblk->m_current_max_segs,
1680 0, OPJ_J2K_DEFAULT_NB_SEGS * sizeof(opj_tcd_seg_t));
1681 cblk->m_current_max_segs = l_m_current_max_segs;
1682 }
1683
1684 seg = &cblk->segs[index];
1685 opj_tcd_reinit_segment(seg);
1686
1687 if (cblksty & J2K_CCP_CBLKSTY_TERMALL) {
1688 seg->maxpasses = 1;
1689 } else if (cblksty & J2K_CCP_CBLKSTY_LAZY) {
1690 if (first) {
1691 seg->maxpasses = 10;
1692 } else {
1693 seg->maxpasses = (((seg - 1)->maxpasses == 1) ||
1694 ((seg - 1)->maxpasses == 10)) ? 2 : 1;
1695 }
1696 } else {
1697 /* See paragraph "B.10.6 Number of coding passes" of the standard.
1698 * Probably that 109 must be interpreted a (Mb-1)*3 + 1 with Mb=37,
1699 * Mb being the maximum number of bit-planes available for the
1700 * representation of coefficients in the sub-band */
1701 seg->maxpasses = 109;
1702 }
1703
1704 return OPJ_TRUE;
1705 }