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
51static void opj_t2_putcommacode(opj_bio_t *bio, OPJ_INT32 n);
52
53static OPJ_UINT32 opj_t2_getcommacode(opj_bio_t *bio);
54/**
55Variable length code for signalling delta Zil (truncation point)
56@param bio Bit Input/Output component
57@param n delta Zil
58*/
59static void opj_t2_putnumpasses(opj_bio_t *bio, OPJ_UINT32 n);
60static OPJ_UINT32 opj_t2_getnumpasses(opj_bio_t *bio);
61
62/**
63Encode 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*/
76static 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/**
88Decode 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*/
101static 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
111static 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
121static 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
132static 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
141static 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*/
155static 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 */
167static void opj_t2_putcommacode(opj_bio_t *bio, OPJ_INT32 n)
168{
169 while (--n >= 0) {
170 opj_bio_write(bio, 1, 1);
171 }
172 opj_bio_write(bio, 0, 1);
173}
174
175static 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
184static void opj_t2_putnumpasses(opj_bio_t *bio, OPJ_UINT32 n)
185{
186 if (n == 1) {
187 opj_bio_write(bio, 0, 1);
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
199static 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
219OPJ_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_UINT32 p_tp_num,
228 OPJ_INT32 p_tp_pos,
229 OPJ_UINT32 p_pino,
230 J2K_T2_MODE p_t2_mode,
231 opj_event_mgr_t *p_manager)
232{
233 OPJ_BYTE *l_current_data = p_dest;
234 OPJ_UINT32 l_nb_bytes = 0;
235 OPJ_UINT32 compno;
236 OPJ_UINT32 poc;
237 opj_pi_iterator_t *l_pi = 00;
238 opj_pi_iterator_t *l_current_pi = 00;
239 opj_image_t *l_image = p_t2->image;
240 opj_cp_t *l_cp = p_t2->cp;
241 opj_tcp_t *l_tcp = &l_cp->tcps[p_tile_no];
242 OPJ_UINT32 pocno = (l_cp->rsiz == OPJ_PROFILE_CINEMA_4K) ? 2 : 1;
243 OPJ_UINT32 l_max_comp = l_cp->m_specific_param.m_enc.m_max_comp_size > 0 ?
244 l_image->numcomps : 1;
245 OPJ_UINT32 l_nb_pocs = l_tcp->numpocs + 1;
246
247 l_pi = opj_pi_initialise_encode(l_image, l_cp, p_tile_no, p_t2_mode);
248 if (!l_pi) {
249 return OPJ_FALSE;
250 }
251
252 * p_data_written = 0;
253
254 if (p_t2_mode == THRESH_CALC) { /* Calculating threshold */
255 l_current_pi = l_pi;
256
257 for (compno = 0; compno < l_max_comp; ++compno) {
258 OPJ_UINT32 l_comp_len = 0;
259 l_current_pi = l_pi;
260
261 for (poc = 0; poc < pocno ; ++poc) {
262 OPJ_UINT32 l_tp_num = compno;
263
264 /* TODO MSD : check why this function cannot fail (cf. v1) */
265 opj_pi_create_encode(l_pi, l_cp, p_tile_no, poc, l_tp_num, p_tp_pos, p_t2_mode);
266
267 if (l_current_pi->poc.prg == OPJ_PROG_UNKNOWN) {
268 /* TODO ADE : add an error */
269 opj_pi_destroy(l_pi, l_nb_pocs);
270 return OPJ_FALSE;
271 }
272 while (opj_pi_next(l_current_pi)) {
273 if (l_current_pi->layno < p_maxlayers) {
274 l_nb_bytes = 0;
275
276 if (! opj_t2_encode_packet(p_tile_no, p_tile, l_tcp, l_current_pi,
277 l_current_data, &l_nb_bytes,
278 p_max_len, cstr_info,
279 p_t2_mode,
280 p_manager)) {
281 opj_pi_destroy(l_pi, l_nb_pocs);
282 return OPJ_FALSE;
283 }
284
285 l_comp_len += l_nb_bytes;
286 l_current_data += l_nb_bytes;
287 p_max_len -= l_nb_bytes;
288
289 * p_data_written += l_nb_bytes;
290 }
291 }
292
293 if (l_cp->m_specific_param.m_enc.m_max_comp_size) {
294 if (l_comp_len > l_cp->m_specific_param.m_enc.m_max_comp_size) {
295 opj_pi_destroy(l_pi, l_nb_pocs);
296 return OPJ_FALSE;
297 }
298 }
299
300 ++l_current_pi;
301 }
302 }
303 } else { /* t2_mode == FINAL_PASS */
304 opj_pi_create_encode(l_pi, l_cp, p_tile_no, p_pino, p_tp_num, p_tp_pos,
305 p_t2_mode);
306
307 l_current_pi = &l_pi[p_pino];
308 if (l_current_pi->poc.prg == OPJ_PROG_UNKNOWN) {
309 /* TODO ADE : add an error */
310 opj_pi_destroy(l_pi, l_nb_pocs);
311 return OPJ_FALSE;
312 }
313 while (opj_pi_next(l_current_pi)) {
314 if (l_current_pi->layno < p_maxlayers) {
315 l_nb_bytes = 0;
316
317 if (! opj_t2_encode_packet(p_tile_no, p_tile, l_tcp, l_current_pi,
318 l_current_data, &l_nb_bytes, p_max_len,
319 cstr_info, p_t2_mode, p_manager)) {
320 opj_pi_destroy(l_pi, l_nb_pocs);
321 return OPJ_FALSE;
322 }
323
324 l_current_data += l_nb_bytes;
325 p_max_len -= l_nb_bytes;
326
327 * p_data_written += l_nb_bytes;
328
329 /* INDEX >> */
330 if (cstr_info) {
331 if (cstr_info->index_write) {
332 opj_tile_info_t *info_TL = &cstr_info->tile[p_tile_no];
333 opj_packet_info_t *info_PK = &info_TL->packet[cstr_info->packno];
334 if (!cstr_info->packno) {
335 info_PK->start_pos = info_TL->end_header + 1;
336 } else {
337 info_PK->start_pos = ((l_cp->m_specific_param.m_enc.m_tp_on | l_tcp->POC) &&
338 info_PK->start_pos) ? info_PK->start_pos : info_TL->packet[cstr_info->packno -
339 1].end_pos + 1;
340 }
341 info_PK->end_pos = info_PK->start_pos + l_nb_bytes - 1;
342 info_PK->end_ph_pos += info_PK->start_pos -
343 1; /* End of packet header which now only represents the distance
344 to start of packet is incremented by value of start of packet*/
345 }
346
347 cstr_info->packno++;
348 }
349 /* << INDEX */
350 ++p_tile->packno;
351 }
352 }
353 }
354
355 opj_pi_destroy(l_pi, l_nb_pocs);
356
357 return OPJ_TRUE;
358}
359
360/* see issue 80 */
361#if 0
362#define JAS_FPRINTF fprintf
363#else
364/* issue 290 */
365static void opj_null_jas_fprintf(FILE* file, const char * format, ...)
366{
367 (void)file;
368 (void)format;
369}
370#define JAS_FPRINTF opj_null_jas_fprintf
371#endif
372
373OPJ_BOOL opj_t2_decode_packets(opj_tcd_t* tcd,
374 opj_t2_t *p_t2,
375 OPJ_UINT32 p_tile_no,
376 opj_tcd_tile_t *p_tile,
377 OPJ_BYTE *p_src,
378 OPJ_UINT32 * p_data_read,
379 OPJ_UINT32 p_max_len,
380 opj_codestream_index_t *p_cstr_index,
381 opj_event_mgr_t *p_manager)
382{
383 OPJ_BYTE *l_current_data = p_src;
384 opj_pi_iterator_t *l_pi = 00;
385 OPJ_UINT32 pino;
386 opj_image_t *l_image = p_t2->image;
387 opj_cp_t *l_cp = p_t2->cp;
388 opj_tcp_t *l_tcp = &(p_t2->cp->tcps[p_tile_no]);
389 OPJ_UINT32 l_nb_bytes_read;
390 OPJ_UINT32 l_nb_pocs = l_tcp->numpocs + 1;
391 opj_pi_iterator_t *l_current_pi = 00;
392#ifdef TODO_MSD
393 OPJ_UINT32 curtp = 0;
394 OPJ_UINT32 tp_start_packno;
395#endif
396 opj_packet_info_t *l_pack_info = 00;
397 opj_image_comp_t* l_img_comp = 00;
398
399 OPJ_ARG_NOT_USED(p_cstr_index);
400
401#ifdef TODO_MSD
402 if (p_cstr_index) {
403 l_pack_info = p_cstr_index->tile_index[p_tile_no].packet;
404 }
405#endif
406
407 /* create a packet iterator */
408 l_pi = opj_pi_create_decode(l_image, l_cp, p_tile_no);
409 if (!l_pi) {
410 return OPJ_FALSE;
411 }
412
413
414 l_current_pi = l_pi;
415
416 for (pino = 0; pino <= l_tcp->numpocs; ++pino) {
417
418 /* if the resolution needed is too low, one dim of the tilec could be equal to zero
419 * and no packets are used to decode this resolution and
420 * l_current_pi->resno is always >= p_tile->comps[l_current_pi->compno].minimum_num_resolutions
421 * and no l_img_comp->resno_decoded are computed
422 */
423 OPJ_BOOL* first_pass_failed = NULL;
424
425 if (l_current_pi->poc.prg == OPJ_PROG_UNKNOWN) {
426 /* TODO ADE : add an error */
427 opj_pi_destroy(l_pi, l_nb_pocs);
428 return OPJ_FALSE;
429 }
430
431 first_pass_failed = (OPJ_BOOL*)opj_malloc(l_image->numcomps * sizeof(OPJ_BOOL));
432 if (!first_pass_failed) {
433 opj_pi_destroy(l_pi, l_nb_pocs);
434 return OPJ_FALSE;
435 }
436 memset(first_pass_failed, OPJ_TRUE, l_image->numcomps * sizeof(OPJ_BOOL));
437
438 while (opj_pi_next(l_current_pi)) {
439 OPJ_BOOL skip_packet = OPJ_FALSE;
440 JAS_FPRINTF(stderr,
441 "packet offset=00000166 prg=%d cmptno=%02d rlvlno=%02d prcno=%03d lyrno=%02d\n\n",
442 l_current_pi->poc.prg1, l_current_pi->compno, l_current_pi->resno,
443 l_current_pi->precno, l_current_pi->layno);
444
445 /* If the packet layer is greater or equal than the maximum */
446 /* number of layers, skip the packet */
447 if (l_current_pi->layno >= l_tcp->num_layers_to_decode) {
448 skip_packet = OPJ_TRUE;
449 }
450 /* If the packet resolution number is greater than the minimum */
451 /* number of resolution allowed, skip the packet */
452 else if (l_current_pi->resno >=
453 p_tile->comps[l_current_pi->compno].minimum_num_resolutions) {
454 skip_packet = OPJ_TRUE;
455 } else {
456 /* If no precincts of any band intersects the area of interest, */
457 /* skip the packet */
458 OPJ_UINT32 bandno;
459 opj_tcd_tilecomp_t *tilec = &p_tile->comps[l_current_pi->compno];
460 opj_tcd_resolution_t *res = &tilec->resolutions[l_current_pi->resno];
461
462 skip_packet = OPJ_TRUE;
463 for (bandno = 0; bandno < res->numbands; ++bandno) {
464 opj_tcd_band_t* band = &res->bands[bandno];
465 opj_tcd_precinct_t* prec = &band->precincts[l_current_pi->precno];
466
467 if (opj_tcd_is_subband_area_of_interest(tcd,
468 l_current_pi->compno,
469 l_current_pi->resno,
470 band->bandno,
471 (OPJ_UINT32)prec->x0,
472 (OPJ_UINT32)prec->y0,
473 (OPJ_UINT32)prec->x1,
474 (OPJ_UINT32)prec->y1)) {
475 skip_packet = OPJ_FALSE;
476 break;
477 }
478 }
479 /*
480 printf("packet cmptno=%02d rlvlno=%02d prcno=%03d lyrno=%02d -> %s\n",
481 l_current_pi->compno, l_current_pi->resno,
482 l_current_pi->precno, l_current_pi->layno, skip_packet ? "skipped" : "kept");
483 */
484 }
485
486 if (!skip_packet) {
487 l_nb_bytes_read = 0;
488
489 first_pass_failed[l_current_pi->compno] = OPJ_FALSE;
490
491 if (! opj_t2_decode_packet(p_t2, p_tile, l_tcp, l_current_pi, l_current_data,
492 &l_nb_bytes_read, p_max_len, l_pack_info, p_manager)) {
493 opj_pi_destroy(l_pi, l_nb_pocs);
494 opj_free(first_pass_failed);
495 return OPJ_FALSE;
496 }
497
498 l_img_comp = &(l_image->comps[l_current_pi->compno]);
499 l_img_comp->resno_decoded = opj_uint_max(l_current_pi->resno,
500 l_img_comp->resno_decoded);
501 } else {
502 l_nb_bytes_read = 0;
503 if (! opj_t2_skip_packet(p_t2, p_tile, l_tcp, l_current_pi, l_current_data,
504 &l_nb_bytes_read, p_max_len, l_pack_info, p_manager)) {
505 opj_pi_destroy(l_pi, l_nb_pocs);
506 opj_free(first_pass_failed);
507 return OPJ_FALSE;
508 }
509 }
510
511 if (first_pass_failed[l_current_pi->compno]) {
512 l_img_comp = &(l_image->comps[l_current_pi->compno]);
513 if (l_img_comp->resno_decoded == 0) {
514 l_img_comp->resno_decoded =
515 p_tile->comps[l_current_pi->compno].minimum_num_resolutions - 1;
516 }
517 }
518
519 l_current_data += l_nb_bytes_read;
520 p_max_len -= l_nb_bytes_read;
521
522 /* INDEX >> */
523#ifdef TODO_MSD
524 if (p_cstr_info) {
525 opj_tile_info_v2_t *info_TL = &p_cstr_info->tile[p_tile_no];
526 opj_packet_info_t *info_PK = &info_TL->packet[p_cstr_info->packno];
527 tp_start_packno = 0;
528 if (!p_cstr_info->packno) {
529 info_PK->start_pos = info_TL->end_header + 1;
530 } else if (info_TL->packet[p_cstr_info->packno - 1].end_pos >=
531 (OPJ_INT32)
532 p_cstr_info->tile[p_tile_no].tp[curtp].tp_end_pos) { /* New tile part */
533 info_TL->tp[curtp].tp_numpacks = p_cstr_info->packno -
534 tp_start_packno; /* Number of packets in previous tile-part */
535 tp_start_packno = p_cstr_info->packno;
536 curtp++;
537 info_PK->start_pos = p_cstr_info->tile[p_tile_no].tp[curtp].tp_end_header + 1;
538 } else {
539 info_PK->start_pos = (l_cp->m_specific_param.m_enc.m_tp_on &&
540 info_PK->start_pos) ? info_PK->start_pos : info_TL->packet[p_cstr_info->packno -
541 1].end_pos + 1;
542 }
543 info_PK->end_pos = info_PK->start_pos + l_nb_bytes_read - 1;
544 info_PK->end_ph_pos += info_PK->start_pos -
545 1; /* End of packet header which now only represents the distance */
546 ++p_cstr_info->packno;
547 }
548#endif
549 /* << INDEX */
550 }
551 ++l_current_pi;
552
553 opj_free(first_pass_failed);
554 }
555 /* INDEX >> */
556#ifdef TODO_MSD
557 if
558 (p_cstr_info) {
559 p_cstr_info->tile[p_tile_no].tp[curtp].tp_numpacks = p_cstr_info->packno -
560 tp_start_packno; /* Number of packets in last tile-part */
561 }
562#endif
563 /* << INDEX */
564
565 /* don't forget to release pi */
566 opj_pi_destroy(l_pi, l_nb_pocs);
567 *p_data_read = (OPJ_UINT32)(l_current_data - p_src);
568 return OPJ_TRUE;
569}
570
571/* ----------------------------------------------------------------------- */
572
573/**
574 * Creates a Tier 2 handle
575 *
576 * @param p_image Source or destination image
577 * @param p_cp Image coding parameters.
578 * @return a new T2 handle if successful, NULL otherwise.
579*/
580opj_t2_t* opj_t2_create(opj_image_t *p_image, opj_cp_t *p_cp)
581{
582 /* create the t2 structure */
583 opj_t2_t *l_t2 = (opj_t2_t*)opj_calloc(1, sizeof(opj_t2_t));
584 if (!l_t2) {
585 return NULL;
586 }
587
588 l_t2->image = p_image;
589 l_t2->cp = p_cp;
590
591 return l_t2;
592}
593
594void opj_t2_destroy(opj_t2_t *t2)
595{
596 if (t2) {
597 opj_free(t2);
598 }
599}
600
601static OPJ_BOOL opj_t2_decode_packet(opj_t2_t* p_t2,
602 opj_tcd_tile_t *p_tile,
603 opj_tcp_t *p_tcp,
604 opj_pi_iterator_t *p_pi,
605 OPJ_BYTE *p_src,
606 OPJ_UINT32 * p_data_read,
607 OPJ_UINT32 p_max_length,
608 opj_packet_info_t *p_pack_info,
609 opj_event_mgr_t *p_manager)
610{
611 OPJ_BOOL l_read_data;
612 OPJ_UINT32 l_nb_bytes_read = 0;
613 OPJ_UINT32 l_nb_total_bytes_read = 0;
614
615 *p_data_read = 0;
616
617 if (! opj_t2_read_packet_header(p_t2, p_tile, p_tcp, p_pi, &l_read_data, p_src,
618 &l_nb_bytes_read, p_max_length, p_pack_info, p_manager)) {
619 return OPJ_FALSE;
620 }
621
622 p_src += l_nb_bytes_read;
623 l_nb_total_bytes_read += l_nb_bytes_read;
624 p_max_length -= l_nb_bytes_read;
625
626 /* we should read data for the packet */
627 if (l_read_data) {
628 l_nb_bytes_read = 0;
629
630 if (! opj_t2_read_packet_data(p_t2, p_tile, p_pi, p_src, &l_nb_bytes_read,
631 p_max_length, p_pack_info, p_manager)) {
632 return OPJ_FALSE;
633 }
634
635 l_nb_total_bytes_read += l_nb_bytes_read;
636 }
637
638 *p_data_read = l_nb_total_bytes_read;
639
640 return OPJ_TRUE;
641}
642
643static OPJ_BOOL opj_t2_encode_packet(OPJ_UINT32 tileno,
644 opj_tcd_tile_t * tile,
645 opj_tcp_t * tcp,
646 opj_pi_iterator_t *pi,
647 OPJ_BYTE *dest,
648 OPJ_UINT32 * p_data_written,
649 OPJ_UINT32 length,
650 opj_codestream_info_t *cstr_info,
651 J2K_T2_MODE p_t2_mode,
652 opj_event_mgr_t *p_manager)
653{
654 OPJ_UINT32 bandno, cblkno;
655 OPJ_BYTE* c = dest;
656 OPJ_UINT32 l_nb_bytes;
657 OPJ_UINT32 compno = pi->compno; /* component value */
658 OPJ_UINT32 resno = pi->resno; /* resolution level value */
659 OPJ_UINT32 precno = pi->precno; /* precinct value */
660 OPJ_UINT32 layno = pi->layno; /* quality layer value */
661 OPJ_UINT32 l_nb_blocks;
662 opj_tcd_band_t *band = 00;
663 opj_tcd_cblk_enc_t* cblk = 00;
664 opj_tcd_pass_t *pass = 00;
665
666 opj_tcd_tilecomp_t *tilec = &tile->comps[compno];
667 opj_tcd_resolution_t *res = &tilec->resolutions[resno];
668
669 opj_bio_t *bio = 00; /* BIO component */
670 OPJ_BOOL packet_empty = OPJ_TRUE;
671
672 /* <SOP 0xff91> */
673 if (tcp->csty & J2K_CP_CSTY_SOP) {
674 if (length < 6) {
675 if (p_t2_mode == FINAL_PASS) {
676 opj_event_msg(p_manager, EVT_ERROR,
677 "opj_t2_encode_packet(): only %u bytes remaining in "
678 "output buffer. %u needed.\n",
679 length, 6);
680 }
681 return OPJ_FALSE;
682 }
683 c[0] = 255;
684 c[1] = 145;
685 c[2] = 0;
686 c[3] = 4;
687#if 0
688 c[4] = (tile->packno % 65536) / 256;
689 c[5] = (tile->packno % 65536) % 256;
690#else
691 c[4] = (tile->packno >> 8) & 0xff; /* packno is uint32_t */
692 c[5] = tile->packno & 0xff;
693#endif
694 c += 6;
695 length -= 6;
696 }
697 /* </SOP> */
698
699 if (!layno) {
700 band = res->bands;
701
702 for (bandno = 0; bandno < res->numbands; ++bandno, ++band) {
703 opj_tcd_precinct_t *prc;
704
705 /* Skip empty bands */
706 if (opj_tcd_is_band_empty(band)) {
707 continue;
708 }
709
710 prc = &band->precincts[precno];
711 opj_tgt_reset(prc->incltree);
712 opj_tgt_reset(prc->imsbtree);
713
714 l_nb_blocks = prc->cw * prc->ch;
715 for (cblkno = 0; cblkno < l_nb_blocks; ++cblkno) {
716 cblk = &prc->cblks.enc[cblkno];
717
718 cblk->numpasses = 0;
719 opj_tgt_setvalue(prc->imsbtree, cblkno, band->numbps - (OPJ_INT32)cblk->numbps);
720 }
721 }
722 }
723
724 bio = opj_bio_create();
725 if (!bio) {
726 /* FIXME event manager error callback */
727 return OPJ_FALSE;
728 }
729 opj_bio_init_enc(bio, c, length);
730
731 /* Check if the packet is empty */
732 /* Note: we could also skip that step and always write a packet header */
733 band = res->bands;
734 for (bandno = 0; bandno < res->numbands; ++bandno, ++band) {
735 opj_tcd_precinct_t *prc;
736 /* Skip empty bands */
737 if (opj_tcd_is_band_empty(band)) {
738 continue;
739 }
740
741 prc = &band->precincts[precno];
742 l_nb_blocks = prc->cw * prc->ch;
743 cblk = prc->cblks.enc;
744 for (cblkno = 0; cblkno < l_nb_blocks; cblkno++, ++cblk) {
745 opj_tcd_layer_t *layer = &cblk->layers[layno];
746
747 /* if cblk not included, go to the next cblk */
748 if (!layer->numpasses) {
749 continue;
750 }
751 packet_empty = OPJ_FALSE;
752 break;
753 }
754 if (!packet_empty) {
755 break;
756 }
757 }
758
759 opj_bio_write(bio, packet_empty ? 0 : 1, 1); /* Empty header bit */
760
761
762 /* Writing Packet header */
763 band = res->bands;
764 for (bandno = 0; !packet_empty &&
765 bandno < res->numbands; ++bandno, ++band) {
766 opj_tcd_precinct_t *prc;
767
768 /* Skip empty bands */
769 if (opj_tcd_is_band_empty(band)) {
770 continue;
771 }
772
773 prc = &band->precincts[precno];
774 l_nb_blocks = prc->cw * prc->ch;
775 cblk = prc->cblks.enc;
776
777 for (cblkno = 0; cblkno < l_nb_blocks; ++cblkno) {
778 opj_tcd_layer_t *layer = &cblk->layers[layno];
779
780 if (!cblk->numpasses && layer->numpasses) {
781 opj_tgt_setvalue(prc->incltree, cblkno, (OPJ_INT32)layno);
782 }
783
784 ++cblk;
785 }
786
787 cblk = prc->cblks.enc;
788 for (cblkno = 0; cblkno < l_nb_blocks; cblkno++) {
789 opj_tcd_layer_t *layer = &cblk->layers[layno];
790 OPJ_UINT32 increment = 0;
791 OPJ_UINT32 nump = 0;
792 OPJ_UINT32 len = 0, passno;
793 OPJ_UINT32 l_nb_passes;
794
795 /* cblk inclusion bits */
796 if (!cblk->numpasses) {
797 opj_tgt_encode(bio, prc->incltree, cblkno, (OPJ_INT32)(layno + 1));
798 } else {
799 opj_bio_write(bio, layer->numpasses != 0, 1);
800 }
801
802 /* if cblk not included, go to the next cblk */
803 if (!layer->numpasses) {
804 ++cblk;
805 continue;
806 }
807
808 /* if first instance of cblk --> zero bit-planes information */
809 if (!cblk->numpasses) {
810 cblk->numlenbits = 3;
811 opj_tgt_encode(bio, prc->imsbtree, cblkno, 999);
812 }
813
814 /* number of coding passes included */
815 opj_t2_putnumpasses(bio, layer->numpasses);
816 l_nb_passes = cblk->numpasses + layer->numpasses;
817 pass = cblk->passes + cblk->numpasses;
818
819 /* computation of the increase of the length indicator and insertion in the header */
820 for (passno = cblk->numpasses; passno < l_nb_passes; ++passno) {
821 ++nump;
822 len += pass->len;
823
824 if (pass->term || passno == (cblk->numpasses + layer->numpasses) - 1) {
825 increment = (OPJ_UINT32)opj_int_max((OPJ_INT32)increment,
826 opj_int_floorlog2((OPJ_INT32)len) + 1
827 - ((OPJ_INT32)cblk->numlenbits + opj_int_floorlog2((OPJ_INT32)nump)));
828 len = 0;
829 nump = 0;
830 }
831
832 ++pass;
833 }
834 opj_t2_putcommacode(bio, (OPJ_INT32)increment);
835
836 /* computation of the new Length indicator */
837 cblk->numlenbits += increment;
838
839 pass = cblk->passes + cblk->numpasses;
840 /* insertion of the codeword segment length */
841 for (passno = cblk->numpasses; passno < l_nb_passes; ++passno) {
842 nump++;
843 len += pass->len;
844
845 if (pass->term || passno == (cblk->numpasses + layer->numpasses) - 1) {
846 opj_bio_write(bio, (OPJ_UINT32)len,
847 cblk->numlenbits + (OPJ_UINT32)opj_int_floorlog2((OPJ_INT32)nump));
848 len = 0;
849 nump = 0;
850 }
851 ++pass;
852 }
853
854 ++cblk;
855 }
856 }
857
858 if (!opj_bio_flush(bio)) {
859 opj_bio_destroy(bio);
860 return OPJ_FALSE; /* modified to eliminate longjmp !! */
861 }
862
863 l_nb_bytes = (OPJ_UINT32)opj_bio_numbytes(bio);
864 c += l_nb_bytes;
865 length -= l_nb_bytes;
866
867 opj_bio_destroy(bio);
868
869 /* <EPH 0xff92> */
870 if (tcp->csty & J2K_CP_CSTY_EPH) {
871 if (length < 2) {
872 if (p_t2_mode == FINAL_PASS) {
873 opj_event_msg(p_manager, EVT_ERROR,
874 "opj_t2_encode_packet(): only %u bytes remaining in "
875 "output buffer. %u needed.\n",
876 length, 2);
877 }
878 return OPJ_FALSE;
879 }
880 c[0] = 255;
881 c[1] = 146;
882 c += 2;
883 length -= 2;
884 }
885 /* </EPH> */
886
887 /* << INDEX */
888 /* End of packet header position. Currently only represents the distance to start of packet
889 Will be updated later by incrementing with packet start value*/
890 if (cstr_info && cstr_info->index_write) {
891 opj_packet_info_t *info_PK = &cstr_info->tile[tileno].packet[cstr_info->packno];
892 info_PK->end_ph_pos = (OPJ_INT32)(c - dest);
893 }
894 /* INDEX >> */
895
896 /* Writing the packet body */
897 band = res->bands;
898 for (bandno = 0; !packet_empty && bandno < res->numbands; bandno++, ++band) {
899 opj_tcd_precinct_t *prc;
900
901 /* Skip empty bands */
902 if (opj_tcd_is_band_empty(band)) {
903 continue;
904 }
905
906 prc = &band->precincts[precno];
907 l_nb_blocks = prc->cw * prc->ch;
908 cblk = prc->cblks.enc;
909
910 for (cblkno = 0; cblkno < l_nb_blocks; ++cblkno) {
911 opj_tcd_layer_t *layer = &cblk->layers[layno];
912
913 if (!layer->numpasses) {
914 ++cblk;
915 continue;
916 }
917
918 if (layer->len > length) {
919 if (p_t2_mode == FINAL_PASS) {
920 opj_event_msg(p_manager, EVT_ERROR,
921 "opj_t2_encode_packet(): only %u bytes remaining in "
922 "output buffer. %u needed.\n",
923 length, layer->len);
924 }
925 return OPJ_FALSE;
926 }
927
928 memcpy(c, layer->data, layer->len);
929 cblk->numpasses += layer->numpasses;
930 c += layer->len;
931 length -= layer->len;
932
933 /* << INDEX */
934 if (cstr_info && cstr_info->index_write) {
935 opj_packet_info_t *info_PK = &cstr_info->tile[tileno].packet[cstr_info->packno];
936 info_PK->disto += layer->disto;
937 if (cstr_info->D_max < info_PK->disto) {
938 cstr_info->D_max = info_PK->disto;
939 }
940 }
941
942 ++cblk;
943 /* INDEX >> */
944 }
945 }
946
947 assert(c >= dest);
948 * p_data_written += (OPJ_UINT32)(c - dest);
949
950 return OPJ_TRUE;
951}
952
953static OPJ_BOOL opj_t2_skip_packet(opj_t2_t* p_t2,
954 opj_tcd_tile_t *p_tile,
955 opj_tcp_t *p_tcp,
956 opj_pi_iterator_t *p_pi,
957 OPJ_BYTE *p_src,
958 OPJ_UINT32 * p_data_read,
959 OPJ_UINT32 p_max_length,
960 opj_packet_info_t *p_pack_info,
961 opj_event_mgr_t *p_manager)
962{
963 OPJ_BOOL l_read_data;
964 OPJ_UINT32 l_nb_bytes_read = 0;
965 OPJ_UINT32 l_nb_total_bytes_read = 0;
966
967 *p_data_read = 0;
968
969 if (! opj_t2_read_packet_header(p_t2, p_tile, p_tcp, p_pi, &l_read_data, p_src,
970 &l_nb_bytes_read, p_max_length, p_pack_info, p_manager)) {
971 return OPJ_FALSE;
972 }
973
974 p_src += l_nb_bytes_read;
975 l_nb_total_bytes_read += l_nb_bytes_read;
976 p_max_length -= l_nb_bytes_read;
977
978 /* we should read data for the packet */
979 if (l_read_data) {
980 l_nb_bytes_read = 0;
981
982 if (! opj_t2_skip_packet_data(p_t2, p_tile, p_pi, &l_nb_bytes_read,
983 p_max_length, p_pack_info, p_manager)) {
984 return OPJ_FALSE;
985 }
986
987 l_nb_total_bytes_read += l_nb_bytes_read;
988 }
989 *p_data_read = l_nb_total_bytes_read;
990
991 return OPJ_TRUE;
992}
993
994
995static OPJ_BOOL opj_t2_read_packet_header(opj_t2_t* p_t2,
996 opj_tcd_tile_t *p_tile,
997 opj_tcp_t *p_tcp,
998 opj_pi_iterator_t *p_pi,
999 OPJ_BOOL * p_is_data_present,
1000 OPJ_BYTE *p_src_data,
1001 OPJ_UINT32 * p_data_read,
1002 OPJ_UINT32 p_max_length,
1003 opj_packet_info_t *p_pack_info,
1004 opj_event_mgr_t *p_manager)
1005
1006{
1007 /* loop */
1008 OPJ_UINT32 bandno, cblkno;
1009 OPJ_UINT32 l_nb_code_blocks;
1010 OPJ_UINT32 l_remaining_length;
1011 OPJ_UINT32 l_header_length;
1012 OPJ_UINT32 * l_modified_length_ptr = 00;
1013 OPJ_BYTE *l_current_data = p_src_data;
1014 opj_cp_t *l_cp = p_t2->cp;
1015 opj_bio_t *l_bio = 00; /* BIO component */
1016 opj_tcd_band_t *l_band = 00;
1017 opj_tcd_cblk_dec_t* l_cblk = 00;
1018 opj_tcd_resolution_t* l_res =
1019 &p_tile->comps[p_pi->compno].resolutions[p_pi->resno];
1020
1021 OPJ_BYTE *l_header_data = 00;
1022 OPJ_BYTE **l_header_data_start = 00;
1023
1024 OPJ_UINT32 l_present;
1025
1026 if (p_pi->layno == 0) {
1027 l_band = l_res->bands;
1028
1029 /* reset tagtrees */
1030 for (bandno = 0; bandno < l_res->numbands; ++bandno) {
1031 if (!opj_tcd_is_band_empty(l_band)) {
1032 opj_tcd_precinct_t *l_prc = &l_band->precincts[p_pi->precno];
1033 if (!(p_pi->precno < (l_band->precincts_data_size / sizeof(
1034 opj_tcd_precinct_t)))) {
1035 opj_event_msg(p_manager, EVT_ERROR, "Invalid precinct\n");
1036 return OPJ_FALSE;
1037 }
1038
1039
1040 opj_tgt_reset(l_prc->incltree);
1041 opj_tgt_reset(l_prc->imsbtree);
1042 l_cblk = l_prc->cblks.dec;
1043
1044 l_nb_code_blocks = l_prc->cw * l_prc->ch;
1045 for (cblkno = 0; cblkno < l_nb_code_blocks; ++cblkno) {
1046 l_cblk->numsegs = 0;
1047 l_cblk->real_num_segs = 0;
1048 ++l_cblk;
1049 }
1050 }
1051
1052 ++l_band;
1053 }
1054 }
1055
1056 /* SOP markers */
1057
1058 if (p_tcp->csty & J2K_CP_CSTY_SOP) {
1059 if (p_max_length < 6) {
1060 opj_event_msg(p_manager, EVT_WARNING,
1061 "Not enough space for expected SOP marker\n");
1062 } else if ((*l_current_data) != 0xff || (*(l_current_data + 1) != 0x91)) {
1063 opj_event_msg(p_manager, EVT_WARNING, "Expected SOP marker\n");
1064 } else {
1065 l_current_data += 6;
1066 }
1067
1068 /** TODO : check the Nsop value */
1069 }
1070
1071 /*
1072 When the marker PPT/PPM is used the packet header are store in PPT/PPM marker
1073 This part deal with this caracteristic
1074 step 1: Read packet header in the saved structure
1075 step 2: Return to codestream for decoding
1076 */
1077
1078 l_bio = opj_bio_create();
1079 if (! l_bio) {
1080 return OPJ_FALSE;
1081 }
1082
1083 if (l_cp->ppm == 1) { /* PPM */
1084 l_header_data_start = &l_cp->ppm_data;
1085 l_header_data = *l_header_data_start;
1086 l_modified_length_ptr = &(l_cp->ppm_len);
1087
1088 } else if (p_tcp->ppt == 1) { /* PPT */
1089 l_header_data_start = &(p_tcp->ppt_data);
1090 l_header_data = *l_header_data_start;
1091 l_modified_length_ptr = &(p_tcp->ppt_len);
1092 } else { /* Normal Case */
1093 l_header_data_start = &(l_current_data);
1094 l_header_data = *l_header_data_start;
1095 l_remaining_length = (OPJ_UINT32)(p_src_data + p_max_length - l_header_data);
1096 l_modified_length_ptr = &(l_remaining_length);
1097 }
1098
1099 opj_bio_init_dec(l_bio, l_header_data, *l_modified_length_ptr);
1100
1101 l_present = opj_bio_read(l_bio, 1);
1102 JAS_FPRINTF(stderr, "present=%d \n", l_present);
1103 if (!l_present) {
1104 /* TODO MSD: no test to control the output of this function*/
1105 opj_bio_inalign(l_bio);
1106 l_header_data += opj_bio_numbytes(l_bio);
1107 opj_bio_destroy(l_bio);
1108
1109 /* EPH markers */
1110 if (p_tcp->csty & J2K_CP_CSTY_EPH) {
1111 if ((*l_modified_length_ptr - (OPJ_UINT32)(l_header_data -
1112 *l_header_data_start)) < 2U) {
1113 opj_event_msg(p_manager, EVT_WARNING,
1114 "Not enough space for expected EPH marker\n");
1115 } else if ((*l_header_data) != 0xff || (*(l_header_data + 1) != 0x92)) {
1116 opj_event_msg(p_manager, EVT_WARNING, "Expected EPH marker\n");
1117 } else {
1118 l_header_data += 2;
1119 }
1120 }
1121
1122 l_header_length = (OPJ_UINT32)(l_header_data - *l_header_data_start);
1123 *l_modified_length_ptr -= l_header_length;
1124 *l_header_data_start += l_header_length;
1125
1126 /* << INDEX */
1127 /* End of packet header position. Currently only represents the distance to start of packet
1128 Will be updated later by incrementing with packet start value */
1129 if (p_pack_info) {
1130 p_pack_info->end_ph_pos = (OPJ_INT32)(l_current_data - p_src_data);
1131 }
1132 /* INDEX >> */
1133
1134 * p_is_data_present = OPJ_FALSE;
1135 *p_data_read = (OPJ_UINT32)(l_current_data - p_src_data);
1136 return OPJ_TRUE;
1137 }
1138
1139 l_band = l_res->bands;
1140 for (bandno = 0; bandno < l_res->numbands; ++bandno, ++l_band) {
1141 opj_tcd_precinct_t *l_prc = &(l_band->precincts[p_pi->precno]);
1142
1143 if (opj_tcd_is_band_empty(l_band)) {
1144 continue;
1145 }
1146
1147 l_nb_code_blocks = l_prc->cw * l_prc->ch;
1148 l_cblk = l_prc->cblks.dec;
1149 for (cblkno = 0; cblkno < l_nb_code_blocks; cblkno++) {
1150 OPJ_UINT32 l_included, l_increment, l_segno;
1151 OPJ_INT32 n;
1152
1153 /* if cblk not yet included before --> inclusion tagtree */
1154 if (!l_cblk->numsegs) {
1155 l_included = opj_tgt_decode(l_bio, l_prc->incltree, cblkno,
1156 (OPJ_INT32)(p_pi->layno + 1));
1157 /* else one bit */
1158 } else {
1159 l_included = opj_bio_read(l_bio, 1);
1160 }
1161
1162 /* if cblk not included */
1163 if (!l_included) {
1164 l_cblk->numnewpasses = 0;
1165 ++l_cblk;
1166 JAS_FPRINTF(stderr, "included=%d \n", l_included);
1167 continue;
1168 }
1169
1170 /* if cblk not yet included --> zero-bitplane tagtree */
1171 if (!l_cblk->numsegs) {
1172 OPJ_UINT32 i = 0;
1173
1174 while (!opj_tgt_decode(l_bio, l_prc->imsbtree, cblkno, (OPJ_INT32)i)) {
1175 ++i;
1176 }
1177
1178 l_cblk->numbps = (OPJ_UINT32)l_band->numbps + 1 - i;
1179 l_cblk->numlenbits = 3;
1180 }
1181
1182 /* number of coding passes */
1183 l_cblk->numnewpasses = opj_t2_getnumpasses(l_bio);
1184 l_increment = opj_t2_getcommacode(l_bio);
1185
1186 /* length indicator increment */
1187 l_cblk->numlenbits += l_increment;
1188 l_segno = 0;
1189
1190 if (!l_cblk->numsegs) {
1191 if (! opj_t2_init_seg(l_cblk, l_segno, p_tcp->tccps[p_pi->compno].cblksty, 1)) {
1192 opj_bio_destroy(l_bio);
1193 return OPJ_FALSE;
1194 }
1195 } else {
1196 l_segno = l_cblk->numsegs - 1;
1197 if (l_cblk->segs[l_segno].numpasses == l_cblk->segs[l_segno].maxpasses) {
1198 ++l_segno;
1199 if (! opj_t2_init_seg(l_cblk, l_segno, p_tcp->tccps[p_pi->compno].cblksty, 0)) {
1200 opj_bio_destroy(l_bio);
1201 return OPJ_FALSE;
1202 }
1203 }
1204 }
1205 n = (OPJ_INT32)l_cblk->numnewpasses;
1206
1207 do {
1208 OPJ_UINT32 bit_number;
1209 l_cblk->segs[l_segno].numnewpasses = (OPJ_UINT32)opj_int_min((OPJ_INT32)(
1210 l_cblk->segs[l_segno].maxpasses - l_cblk->segs[l_segno].numpasses), n);
1211 bit_number = l_cblk->numlenbits + opj_uint_floorlog2(
1212 l_cblk->segs[l_segno].numnewpasses);
1213 if (bit_number > 32) {
1214 opj_event_msg(p_manager, EVT_ERROR,
1215 "Invalid bit number %d in opj_t2_read_packet_header()\n",
1216 bit_number);
1217 opj_bio_destroy(l_bio);
1218 return OPJ_FALSE;
1219 }
1220 l_cblk->segs[l_segno].newlen = opj_bio_read(l_bio, bit_number);
1221 JAS_FPRINTF(stderr, "included=%d numnewpasses=%d increment=%d len=%d \n",
1222 l_included, l_cblk->segs[l_segno].numnewpasses, l_increment,
1223 l_cblk->segs[l_segno].newlen);
1224
1225 /* testcase 1802.pdf.SIGSEGV.36e.894 */
1226 if (l_cblk->segs[l_segno].newlen > *l_modified_length_ptr) {
1227 opj_bio_destroy(l_bio);
1228 return OPJ_FALSE;
1229 }
1230
1231 n -= (OPJ_INT32)l_cblk->segs[l_segno].numnewpasses;
1232 if (n > 0) {
1233 ++l_segno;
1234
1235 if (! opj_t2_init_seg(l_cblk, l_segno, p_tcp->tccps[p_pi->compno].cblksty, 0)) {
1236 opj_bio_destroy(l_bio);
1237 return OPJ_FALSE;
1238 }
1239 }
1240 } while (n > 0);
1241
1242 ++l_cblk;
1243 }
1244 }
1245
1246 if (!opj_bio_inalign(l_bio)) {
1247 opj_bio_destroy(l_bio);
1248 return OPJ_FALSE;
1249 }
1250
1251 l_header_data += opj_bio_numbytes(l_bio);
1252 opj_bio_destroy(l_bio);
1253
1254 /* EPH markers */
1255 if (p_tcp->csty & J2K_CP_CSTY_EPH) {
1256 if ((*l_modified_length_ptr - (OPJ_UINT32)(l_header_data -
1257 *l_header_data_start)) < 2U) {
1258 opj_event_msg(p_manager, EVT_WARNING,
1259 "Not enough space for expected EPH marker\n");
1260 } else if ((*l_header_data) != 0xff || (*(l_header_data + 1) != 0x92)) {
1261 opj_event_msg(p_manager, EVT_WARNING, "Expected EPH marker\n");
1262 } else {
1263 l_header_data += 2;
1264 }
1265 }
1266
1267 l_header_length = (OPJ_UINT32)(l_header_data - *l_header_data_start);
1268 JAS_FPRINTF(stderr, "hdrlen=%d \n", l_header_length);
1269 JAS_FPRINTF(stderr, "packet body\n");
1270 *l_modified_length_ptr -= l_header_length;
1271 *l_header_data_start += l_header_length;
1272
1273 /* << INDEX */
1274 /* End of packet header position. Currently only represents the distance to start of packet
1275 Will be updated later by incrementing with packet start value */
1276 if (p_pack_info) {
1277 p_pack_info->end_ph_pos = (OPJ_INT32)(l_current_data - p_src_data);
1278 }
1279 /* INDEX >> */
1280
1281 *p_is_data_present = OPJ_TRUE;
1282 *p_data_read = (OPJ_UINT32)(l_current_data - p_src_data);
1283
1284 return OPJ_TRUE;
1285}
1286
1287static OPJ_BOOL opj_t2_read_packet_data(opj_t2_t* p_t2,
1288 opj_tcd_tile_t *p_tile,
1289 opj_pi_iterator_t *p_pi,
1290 OPJ_BYTE *p_src_data,
1291 OPJ_UINT32 * p_data_read,
1292 OPJ_UINT32 p_max_length,
1293 opj_packet_info_t *pack_info,
1294 opj_event_mgr_t* p_manager)
1295{
1296 OPJ_UINT32 bandno, cblkno;
1297 OPJ_UINT32 l_nb_code_blocks;
1298 OPJ_BYTE *l_current_data = p_src_data;
1299 opj_tcd_band_t *l_band = 00;
1300 opj_tcd_cblk_dec_t* l_cblk = 00;
1301 opj_tcd_resolution_t* l_res =
1302 &p_tile->comps[p_pi->compno].resolutions[p_pi->resno];
1303
1304 OPJ_ARG_NOT_USED(p_t2);
1305 OPJ_ARG_NOT_USED(pack_info);
1306
1307 l_band = l_res->bands;
1308 for (bandno = 0; bandno < l_res->numbands; ++bandno) {
1309 opj_tcd_precinct_t *l_prc = &l_band->precincts[p_pi->precno];
1310
1311 if ((l_band->x1 - l_band->x0 == 0) || (l_band->y1 - l_band->y0 == 0)) {
1312 ++l_band;
1313 continue;
1314 }
1315
1316 l_nb_code_blocks = l_prc->cw * l_prc->ch;
1317 l_cblk = l_prc->cblks.dec;
1318
1319 for (cblkno = 0; cblkno < l_nb_code_blocks; ++cblkno) {
1320 opj_tcd_seg_t *l_seg = 00;
1321
1322 if (!l_cblk->numnewpasses) {
1323 /* nothing to do */
1324 ++l_cblk;
1325 continue;
1326 }
1327
1328 if (!l_cblk->numsegs) {
1329 l_seg = l_cblk->segs;
1330 ++l_cblk->numsegs;
1331 } else {
1332 l_seg = &l_cblk->segs[l_cblk->numsegs - 1];
1333
1334 if (l_seg->numpasses == l_seg->maxpasses) {
1335 ++l_seg;
1336 ++l_cblk->numsegs;
1337 }
1338 }
1339
1340 do {
1341 /* Check possible overflow (on l_current_data only, assumes input args already checked) then size */
1342 if ((((OPJ_SIZE_T)l_current_data + (OPJ_SIZE_T)l_seg->newlen) <
1343 (OPJ_SIZE_T)l_current_data) ||
1344 (l_current_data + l_seg->newlen > p_src_data + p_max_length)) {
1345 opj_event_msg(p_manager, EVT_ERROR,
1346 "read: segment too long (%d) with max (%d) for codeblock %d (p=%d, b=%d, r=%d, c=%d)\n",
1347 l_seg->newlen, p_max_length, cblkno, p_pi->precno, bandno, p_pi->resno,
1348 p_pi->compno);
1349 return OPJ_FALSE;
1350 }
1351
1352#ifdef USE_JPWL
1353 /* we need here a j2k handle to verify if making a check to
1354 the validity of cblocks parameters is selected from user (-W) */
1355
1356 /* let's check that we are not exceeding */
1357 if ((l_cblk->len + l_seg->newlen) > 8192) {
1358 opj_event_msg(p_manager, EVT_WARNING,
1359 "JPWL: segment too long (%d) for codeblock %d (p=%d, b=%d, r=%d, c=%d)\n",
1360 l_seg->newlen, cblkno, p_pi->precno, bandno, p_pi->resno, p_pi->compno);
1361 if (!JPWL_ASSUME) {
1362 opj_event_msg(p_manager, EVT_ERROR, "JPWL: giving up\n");
1363 return OPJ_FALSE;
1364 }
1365 l_seg->newlen = 8192 - l_cblk->len;
1366 opj_event_msg(p_manager, EVT_WARNING, " - truncating segment to %d\n",
1367 l_seg->newlen);
1368 break;
1369 };
1370
1371#endif /* USE_JPWL */
1372
1373 if (l_cblk->numchunks == l_cblk->numchunksalloc) {
1374 OPJ_UINT32 l_numchunksalloc = l_cblk->numchunksalloc * 2 + 1;
1375 opj_tcd_seg_data_chunk_t* l_chunks =
1376 (opj_tcd_seg_data_chunk_t*)opj_realloc(l_cblk->chunks,
1377 l_numchunksalloc * sizeof(opj_tcd_seg_data_chunk_t));
1378 if (l_chunks == NULL) {
1379 opj_event_msg(p_manager, EVT_ERROR,
1380 "cannot allocate opj_tcd_seg_data_chunk_t* array");
1381 return OPJ_FALSE;
1382 }
1383 l_cblk->chunks = l_chunks;
1384 l_cblk->numchunksalloc = l_numchunksalloc;
1385 }
1386
1387 l_cblk->chunks[l_cblk->numchunks].data = l_current_data;
1388 l_cblk->chunks[l_cblk->numchunks].len = l_seg->newlen;
1389 l_cblk->numchunks ++;
1390
1391 l_current_data += l_seg->newlen;
1392 l_seg->len += l_seg->newlen;
1393 l_seg->numpasses += l_seg->numnewpasses;
1394 l_cblk->numnewpasses -= l_seg->numnewpasses;
1395
1396 l_seg->real_num_passes = l_seg->numpasses;
1397
1398 if (l_cblk->numnewpasses > 0) {
1399 ++l_seg;
1400 ++l_cblk->numsegs;
1401 }
1402 } while (l_cblk->numnewpasses > 0);
1403
1404 l_cblk->real_num_segs = l_cblk->numsegs;
1405 ++l_cblk;
1406 } /* next code_block */
1407
1408 ++l_band;
1409 }
1410
1411 *(p_data_read) = (OPJ_UINT32)(l_current_data - p_src_data);
1412
1413
1414 return OPJ_TRUE;
1415}
1416
1417static OPJ_BOOL opj_t2_skip_packet_data(opj_t2_t* p_t2,
1418 opj_tcd_tile_t *p_tile,
1419 opj_pi_iterator_t *p_pi,
1420 OPJ_UINT32 * p_data_read,
1421 OPJ_UINT32 p_max_length,
1422 opj_packet_info_t *pack_info,
1423 opj_event_mgr_t *p_manager)
1424{
1425 OPJ_UINT32 bandno, cblkno;
1426 OPJ_UINT32 l_nb_code_blocks;
1427 opj_tcd_band_t *l_band = 00;
1428 opj_tcd_cblk_dec_t* l_cblk = 00;
1429 opj_tcd_resolution_t* l_res =
1430 &p_tile->comps[p_pi->compno].resolutions[p_pi->resno];
1431
1432 OPJ_ARG_NOT_USED(p_t2);
1433 OPJ_ARG_NOT_USED(pack_info);
1434
1435 *p_data_read = 0;
1436 l_band = l_res->bands;
1437
1438 for (bandno = 0; bandno < l_res->numbands; ++bandno) {
1439 opj_tcd_precinct_t *l_prc = &l_band->precincts[p_pi->precno];
1440
1441 if ((l_band->x1 - l_band->x0 == 0) || (l_band->y1 - l_band->y0 == 0)) {
1442 ++l_band;
1443 continue;
1444 }
1445
1446 l_nb_code_blocks = l_prc->cw * l_prc->ch;
1447 l_cblk = l_prc->cblks.dec;
1448
1449 for (cblkno = 0; cblkno < l_nb_code_blocks; ++cblkno) {
1450 opj_tcd_seg_t *l_seg = 00;
1451
1452 if (!l_cblk->numnewpasses) {
1453 /* nothing to do */
1454 ++l_cblk;
1455 continue;
1456 }
1457
1458 if (!l_cblk->numsegs) {
1459 l_seg = l_cblk->segs;
1460 ++l_cblk->numsegs;
1461 } else {
1462 l_seg = &l_cblk->segs[l_cblk->numsegs - 1];
1463
1464 if (l_seg->numpasses == l_seg->maxpasses) {
1465 ++l_seg;
1466 ++l_cblk->numsegs;
1467 }
1468 }
1469
1470 do {
1471 /* Check possible overflow then size */
1472 if (((*p_data_read + l_seg->newlen) < (*p_data_read)) ||
1473 ((*p_data_read + l_seg->newlen) > p_max_length)) {
1474 opj_event_msg(p_manager, EVT_ERROR,
1475 "skip: segment too long (%d) with max (%d) for codeblock %d (p=%d, b=%d, r=%d, c=%d)\n",
1476 l_seg->newlen, p_max_length, cblkno, p_pi->precno, bandno, p_pi->resno,
1477 p_pi->compno);
1478 return OPJ_FALSE;
1479 }
1480
1481#ifdef USE_JPWL
1482 /* we need here a j2k handle to verify if making a check to
1483 the validity of cblocks parameters is selected from user (-W) */
1484
1485 /* let's check that we are not exceeding */
1486 if ((l_cblk->len + l_seg->newlen) > 8192) {
1487 opj_event_msg(p_manager, EVT_WARNING,
1488 "JPWL: segment too long (%d) for codeblock %d (p=%d, b=%d, r=%d, c=%d)\n",
1489 l_seg->newlen, cblkno, p_pi->precno, bandno, p_pi->resno, p_pi->compno);
1490 if (!JPWL_ASSUME) {
1491 opj_event_msg(p_manager, EVT_ERROR, "JPWL: giving up\n");
1492 return -999;
1493 }
1494 l_seg->newlen = 8192 - l_cblk->len;
1495 opj_event_msg(p_manager, EVT_WARNING, " - truncating segment to %d\n",
1496 l_seg->newlen);
1497 break;
1498 };
1499
1500#endif /* USE_JPWL */
1501 JAS_FPRINTF(stderr, "p_data_read (%d) newlen (%d) \n", *p_data_read,
1502 l_seg->newlen);
1503 *(p_data_read) += l_seg->newlen;
1504
1505 l_seg->numpasses += l_seg->numnewpasses;
1506 l_cblk->numnewpasses -= l_seg->numnewpasses;
1507 if (l_cblk->numnewpasses > 0) {
1508 ++l_seg;
1509 ++l_cblk->numsegs;
1510 }
1511 } while (l_cblk->numnewpasses > 0);
1512
1513 ++l_cblk;
1514 }
1515
1516 ++l_band;
1517 }
1518
1519 return OPJ_TRUE;
1520}
1521
1522
1523static OPJ_BOOL opj_t2_init_seg(opj_tcd_cblk_dec_t* cblk,
1524 OPJ_UINT32 index,
1525 OPJ_UINT32 cblksty,
1526 OPJ_UINT32 first)
1527{
1528 opj_tcd_seg_t* seg = 00;
1529 OPJ_UINT32 l_nb_segs = index + 1;
1530
1531 if (l_nb_segs > cblk->m_current_max_segs) {
1532 opj_tcd_seg_t* new_segs;
1533 OPJ_UINT32 l_m_current_max_segs = cblk->m_current_max_segs +
1534 OPJ_J2K_DEFAULT_NB_SEGS;
1535
1536 new_segs = (opj_tcd_seg_t*) opj_realloc(cblk->segs,
1537 l_m_current_max_segs * sizeof(opj_tcd_seg_t));
1538 if (! new_segs) {
1539 /* opj_event_msg(p_manager, EVT_ERROR, "Not enough memory to initialize segment %d\n", l_nb_segs); */
1540 return OPJ_FALSE;
1541 }
1542 cblk->segs = new_segs;
1543 memset(new_segs + cblk->m_current_max_segs,
1544 0, OPJ_J2K_DEFAULT_NB_SEGS * sizeof(opj_tcd_seg_t));
1545 cblk->m_current_max_segs = l_m_current_max_segs;
1546 }
1547
1548 seg = &cblk->segs[index];
1549 opj_tcd_reinit_segment(seg);
1550
1551 if (cblksty & J2K_CCP_CBLKSTY_TERMALL) {
1552 seg->maxpasses = 1;
1553 } else if (cblksty & J2K_CCP_CBLKSTY_LAZY) {
1554 if (first) {
1555 seg->maxpasses = 10;
1556 } else {
1557 seg->maxpasses = (((seg - 1)->maxpasses == 1) ||
1558 ((seg - 1)->maxpasses == 10)) ? 2 : 1;
1559 }
1560 } else {
1561 /* See paragraph "B.10.6 Number of coding passes" of the standard.
1562 * Probably that 109 must be interpreted a (Mb-1)*3 + 1 with Mb=37,
1563 * Mb being the maximum number of bit-planes available for the
1564 * representation of coefficients in the sub-band */
1565 seg->maxpasses = 109;
1566 }
1567
1568 return OPJ_TRUE;
1569}
1570