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 */
opj_t2_putcommacode(opj_bio_t * bio,OPJ_INT32 n)167 static 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
opj_t2_getcommacode(opj_bio_t * bio)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
opj_t2_putnumpasses(opj_bio_t * bio,OPJ_UINT32 n)184 static 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
opj_t2_getnumpasses(opj_bio_t * bio)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
opj_t2_encode_packets(opj_t2_t * p_t2,OPJ_UINT32 p_tile_no,opj_tcd_tile_t * p_tile,OPJ_UINT32 p_maxlayers,OPJ_BYTE * p_dest,OPJ_UINT32 * p_data_written,OPJ_UINT32 p_max_len,opj_codestream_info_t * cstr_info,opj_tcd_marker_info_t * p_marker_info,OPJ_UINT32 p_tp_num,OPJ_INT32 p_tp_pos,OPJ_UINT32 p_pino,J2K_T2_MODE p_t2_mode,opj_event_mgr_t * p_manager)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 */
opj_null_jas_fprintf(FILE * file,const char * format,...)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
opj_t2_decode_packets(opj_tcd_t * tcd,opj_t2_t * p_t2,OPJ_UINT32 p_tile_no,opj_tcd_tile_t * p_tile,OPJ_BYTE * p_src,OPJ_UINT32 * p_data_read,OPJ_UINT32 p_max_len,opj_codestream_index_t * p_cstr_index,opj_event_mgr_t * p_manager)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
506 if (!skip_packet) {
507 l_nb_bytes_read = 0;
508
509 first_pass_failed[l_current_pi->compno] = OPJ_FALSE;
510
511 if (! opj_t2_decode_packet(p_t2, p_tile, l_tcp, l_current_pi, l_current_data,
512 &l_nb_bytes_read, p_max_len, l_pack_info, p_manager)) {
513 opj_pi_destroy(l_pi, l_nb_pocs);
514 opj_free(first_pass_failed);
515 return OPJ_FALSE;
516 }
517
518 l_img_comp = &(l_image->comps[l_current_pi->compno]);
519 l_img_comp->resno_decoded = opj_uint_max(l_current_pi->resno,
520 l_img_comp->resno_decoded);
521 } else {
522 l_nb_bytes_read = 0;
523 if (! opj_t2_skip_packet(p_t2, p_tile, l_tcp, l_current_pi, l_current_data,
524 &l_nb_bytes_read, p_max_len, l_pack_info, p_manager)) {
525 opj_pi_destroy(l_pi, l_nb_pocs);
526 opj_free(first_pass_failed);
527 return OPJ_FALSE;
528 }
529 }
530
531 if (first_pass_failed[l_current_pi->compno]) {
532 l_img_comp = &(l_image->comps[l_current_pi->compno]);
533 if (l_img_comp->resno_decoded == 0) {
534 l_img_comp->resno_decoded =
535 p_tile->comps[l_current_pi->compno].minimum_num_resolutions - 1;
536 }
537 }
538
539 l_current_data += l_nb_bytes_read;
540 p_max_len -= l_nb_bytes_read;
541
542 /* INDEX >> */
543 #ifdef TODO_MSD
544 if (p_cstr_info) {
545 opj_tile_info_v2_t *info_TL = &p_cstr_info->tile[p_tile_no];
546 opj_packet_info_t *info_PK = &info_TL->packet[p_cstr_info->packno];
547 tp_start_packno = 0;
548 if (!p_cstr_info->packno) {
549 info_PK->start_pos = info_TL->end_header + 1;
550 } else if (info_TL->packet[p_cstr_info->packno - 1].end_pos >=
551 (OPJ_INT32)
552 p_cstr_info->tile[p_tile_no].tp[curtp].tp_end_pos) { /* New tile part */
553 info_TL->tp[curtp].tp_numpacks = p_cstr_info->packno -
554 tp_start_packno; /* Number of packets in previous tile-part */
555 tp_start_packno = p_cstr_info->packno;
556 curtp++;
557 info_PK->start_pos = p_cstr_info->tile[p_tile_no].tp[curtp].tp_end_header + 1;
558 } else {
559 info_PK->start_pos = (l_cp->m_specific_param.m_enc.m_tp_on &&
560 info_PK->start_pos) ? info_PK->start_pos : info_TL->packet[p_cstr_info->packno -
561 1].end_pos + 1;
562 }
563 info_PK->end_pos = info_PK->start_pos + l_nb_bytes_read - 1;
564 info_PK->end_ph_pos += info_PK->start_pos -
565 1; /* End of packet header which now only represents the distance */
566 ++p_cstr_info->packno;
567 }
568 #endif
569 /* << INDEX */
570 }
571 ++l_current_pi;
572
573 opj_free(first_pass_failed);
574 }
575 /* INDEX >> */
576 #ifdef TODO_MSD
577 if
578 (p_cstr_info) {
579 p_cstr_info->tile[p_tile_no].tp[curtp].tp_numpacks = p_cstr_info->packno -
580 tp_start_packno; /* Number of packets in last tile-part */
581 }
582 #endif
583 /* << INDEX */
584
585 /* don't forget to release pi */
586 opj_pi_destroy(l_pi, l_nb_pocs);
587 *p_data_read = (OPJ_UINT32)(l_current_data - p_src);
588 return OPJ_TRUE;
589 }
590
591 /* ----------------------------------------------------------------------- */
592
593 /**
594 * Creates a Tier 2 handle
595 *
596 * @param p_image Source or destination image
597 * @param p_cp Image coding parameters.
598 * @return a new T2 handle if successful, NULL otherwise.
599 */
opj_t2_create(opj_image_t * p_image,opj_cp_t * p_cp)600 opj_t2_t* opj_t2_create(opj_image_t *p_image, opj_cp_t *p_cp)
601 {
602 /* create the t2 structure */
603 opj_t2_t *l_t2 = (opj_t2_t*)opj_calloc(1, sizeof(opj_t2_t));
604 if (!l_t2) {
605 return NULL;
606 }
607
608 l_t2->image = p_image;
609 l_t2->cp = p_cp;
610
611 return l_t2;
612 }
613
opj_t2_destroy(opj_t2_t * t2)614 void opj_t2_destroy(opj_t2_t *t2)
615 {
616 if (t2) {
617 opj_free(t2);
618 }
619 }
620
opj_t2_decode_packet(opj_t2_t * p_t2,opj_tcd_tile_t * p_tile,opj_tcp_t * p_tcp,opj_pi_iterator_t * p_pi,OPJ_BYTE * p_src,OPJ_UINT32 * p_data_read,OPJ_UINT32 p_max_length,opj_packet_info_t * p_pack_info,opj_event_mgr_t * p_manager)621 static OPJ_BOOL opj_t2_decode_packet(opj_t2_t* p_t2,
622 opj_tcd_tile_t *p_tile,
623 opj_tcp_t *p_tcp,
624 opj_pi_iterator_t *p_pi,
625 OPJ_BYTE *p_src,
626 OPJ_UINT32 * p_data_read,
627 OPJ_UINT32 p_max_length,
628 opj_packet_info_t *p_pack_info,
629 opj_event_mgr_t *p_manager)
630 {
631 OPJ_BOOL l_read_data;
632 OPJ_UINT32 l_nb_bytes_read = 0;
633 OPJ_UINT32 l_nb_total_bytes_read = 0;
634
635 *p_data_read = 0;
636
637 if (! opj_t2_read_packet_header(p_t2, p_tile, p_tcp, p_pi, &l_read_data, p_src,
638 &l_nb_bytes_read, p_max_length, p_pack_info, p_manager)) {
639 return OPJ_FALSE;
640 }
641
642 p_src += l_nb_bytes_read;
643 l_nb_total_bytes_read += l_nb_bytes_read;
644 p_max_length -= l_nb_bytes_read;
645
646 /* we should read data for the packet */
647 if (l_read_data) {
648 l_nb_bytes_read = 0;
649
650 if (! opj_t2_read_packet_data(p_t2, p_tile, p_pi, p_src, &l_nb_bytes_read,
651 p_max_length, p_pack_info, p_manager)) {
652 return OPJ_FALSE;
653 }
654
655 l_nb_total_bytes_read += l_nb_bytes_read;
656 }
657
658 *p_data_read = l_nb_total_bytes_read;
659
660 return OPJ_TRUE;
661 }
662
opj_t2_encode_packet(OPJ_UINT32 tileno,opj_tcd_tile_t * tile,opj_tcp_t * tcp,opj_pi_iterator_t * pi,OPJ_BYTE * dest,OPJ_UINT32 * p_data_written,OPJ_UINT32 length,opj_codestream_info_t * cstr_info,J2K_T2_MODE p_t2_mode,opj_event_mgr_t * p_manager)663 static OPJ_BOOL opj_t2_encode_packet(OPJ_UINT32 tileno,
664 opj_tcd_tile_t * tile,
665 opj_tcp_t * tcp,
666 opj_pi_iterator_t *pi,
667 OPJ_BYTE *dest,
668 OPJ_UINT32 * p_data_written,
669 OPJ_UINT32 length,
670 opj_codestream_info_t *cstr_info,
671 J2K_T2_MODE p_t2_mode,
672 opj_event_mgr_t *p_manager)
673 {
674 OPJ_UINT32 bandno, cblkno;
675 OPJ_BYTE* c = dest;
676 OPJ_UINT32 l_nb_bytes;
677 OPJ_UINT32 compno = pi->compno; /* component value */
678 OPJ_UINT32 resno = pi->resno; /* resolution level value */
679 OPJ_UINT32 precno = pi->precno; /* precinct value */
680 OPJ_UINT32 layno = pi->layno; /* quality layer value */
681 OPJ_UINT32 l_nb_blocks;
682 opj_tcd_band_t *band = 00;
683 opj_tcd_cblk_enc_t* cblk = 00;
684 opj_tcd_pass_t *pass = 00;
685
686 opj_tcd_tilecomp_t *tilec = &tile->comps[compno];
687 opj_tcd_resolution_t *res = &tilec->resolutions[resno];
688
689 opj_bio_t *bio = 00; /* BIO component */
690 #ifdef ENABLE_EMPTY_PACKET_OPTIMIZATION
691 OPJ_BOOL packet_empty = OPJ_TRUE;
692 #else
693 OPJ_BOOL packet_empty = OPJ_FALSE;
694 #endif
695
696 #ifdef DEBUG_VERBOSE
697 if (p_t2_mode == FINAL_PASS) {
698 fprintf(stderr,
699 "encode packet compono=%d, resno=%d, precno=%d, layno=%d\n",
700 compno, resno, precno, layno);
701 }
702 #endif
703
704 /* <SOP 0xff91> */
705 if (tcp->csty & J2K_CP_CSTY_SOP) {
706 if (length < 6) {
707 if (p_t2_mode == FINAL_PASS) {
708 opj_event_msg(p_manager, EVT_ERROR,
709 "opj_t2_encode_packet(): only %u bytes remaining in "
710 "output buffer. %u needed.\n",
711 length, 6);
712 }
713 return OPJ_FALSE;
714 }
715 c[0] = 255;
716 c[1] = 145;
717 c[2] = 0;
718 c[3] = 4;
719 #if 0
720 c[4] = (tile->packno % 65536) / 256;
721 c[5] = (tile->packno % 65536) % 256;
722 #else
723 c[4] = (tile->packno >> 8) & 0xff; /* packno is uint32_t */
724 c[5] = tile->packno & 0xff;
725 #endif
726 c += 6;
727 length -= 6;
728 }
729 /* </SOP> */
730
731 if (!layno) {
732 band = res->bands;
733
734 for (bandno = 0; bandno < res->numbands; ++bandno, ++band) {
735 opj_tcd_precinct_t *prc;
736
737 /* Skip empty bands */
738 if (opj_tcd_is_band_empty(band)) {
739 continue;
740 }
741
742 /* Avoid out of bounds access of https://github.com/uclouvain/openjpeg/issues/1294 */
743 /* but likely not a proper fix. */
744 if (precno >= res->pw * res->ph) {
745 opj_event_msg(p_manager, EVT_ERROR,
746 "opj_t2_encode_packet(): accessing precno=%u >= %u\n",
747 precno, res->pw * res->ph);
748 return OPJ_FALSE;
749 }
750
751 prc = &band->precincts[precno];
752 opj_tgt_reset(prc->incltree);
753 opj_tgt_reset(prc->imsbtree);
754
755 l_nb_blocks = prc->cw * prc->ch;
756 for (cblkno = 0; cblkno < l_nb_blocks; ++cblkno) {
757 cblk = &prc->cblks.enc[cblkno];
758
759 cblk->numpasses = 0;
760 opj_tgt_setvalue(prc->imsbtree, cblkno, band->numbps - (OPJ_INT32)cblk->numbps);
761 }
762 }
763 }
764
765 bio = opj_bio_create();
766 if (!bio) {
767 /* FIXME event manager error callback */
768 return OPJ_FALSE;
769 }
770 opj_bio_init_enc(bio, c, length);
771
772 #ifdef ENABLE_EMPTY_PACKET_OPTIMIZATION
773 /* WARNING: this code branch is disabled, since it has been reported that */
774 /* such packets cause decoding issues with cinema J2K hardware */
775 /* decoders: https://groups.google.com/forum/#!topic/openjpeg/M7M_fLX_Bco */
776
777 /* Check if the packet is empty */
778 /* Note: we could also skip that step and always write a packet header */
779 band = res->bands;
780 for (bandno = 0; bandno < res->numbands; ++bandno, ++band) {
781 opj_tcd_precinct_t *prc;
782 /* Skip empty bands */
783 if (opj_tcd_is_band_empty(band)) {
784 continue;
785 }
786
787 prc = &band->precincts[precno];
788 l_nb_blocks = prc->cw * prc->ch;
789 cblk = prc->cblks.enc;
790 for (cblkno = 0; cblkno < l_nb_blocks; cblkno++, ++cblk) {
791 opj_tcd_layer_t *layer = &cblk->layers[layno];
792
793 /* if cblk not included, go to the next cblk */
794 if (!layer->numpasses) {
795 continue;
796 }
797 packet_empty = OPJ_FALSE;
798 break;
799 }
800 if (!packet_empty) {
801 break;
802 }
803 }
804 #endif
805 opj_bio_write(bio, packet_empty ? 0 : 1, 1); /* Empty header bit */
806
807 /* Writing Packet header */
808 band = res->bands;
809 for (bandno = 0; !packet_empty &&
810 bandno < res->numbands; ++bandno, ++band) {
811 opj_tcd_precinct_t *prc;
812
813 /* Skip empty bands */
814 if (opj_tcd_is_band_empty(band)) {
815 continue;
816 }
817
818 /* Avoid out of bounds access of https://github.com/uclouvain/openjpeg/issues/1297 */
819 /* but likely not a proper fix. */
820 if (precno >= res->pw * res->ph) {
821 opj_event_msg(p_manager, EVT_ERROR,
822 "opj_t2_encode_packet(): accessing precno=%u >= %u\n",
823 precno, res->pw * res->ph);
824 return OPJ_FALSE;
825 }
826
827 prc = &band->precincts[precno];
828 l_nb_blocks = prc->cw * prc->ch;
829 cblk = prc->cblks.enc;
830
831 for (cblkno = 0; cblkno < l_nb_blocks; ++cblkno) {
832 opj_tcd_layer_t *layer = &cblk->layers[layno];
833
834 if (!cblk->numpasses && layer->numpasses) {
835 opj_tgt_setvalue(prc->incltree, cblkno, (OPJ_INT32)layno);
836 }
837
838 ++cblk;
839 }
840
841 cblk = prc->cblks.enc;
842 for (cblkno = 0; cblkno < l_nb_blocks; cblkno++) {
843 opj_tcd_layer_t *layer = &cblk->layers[layno];
844 OPJ_UINT32 increment = 0;
845 OPJ_UINT32 nump = 0;
846 OPJ_UINT32 len = 0, passno;
847 OPJ_UINT32 l_nb_passes;
848
849 /* cblk inclusion bits */
850 if (!cblk->numpasses) {
851 opj_tgt_encode(bio, prc->incltree, cblkno, (OPJ_INT32)(layno + 1));
852 } else {
853 opj_bio_write(bio, layer->numpasses != 0, 1);
854 }
855
856 /* if cblk not included, go to the next cblk */
857 if (!layer->numpasses) {
858 ++cblk;
859 continue;
860 }
861
862 /* if first instance of cblk --> zero bit-planes information */
863 if (!cblk->numpasses) {
864 cblk->numlenbits = 3;
865 opj_tgt_encode(bio, prc->imsbtree, cblkno, 999);
866 }
867
868 /* number of coding passes included */
869 opj_t2_putnumpasses(bio, layer->numpasses);
870 l_nb_passes = cblk->numpasses + layer->numpasses;
871 pass = cblk->passes + cblk->numpasses;
872
873 /* computation of the increase of the length indicator and insertion in the header */
874 for (passno = cblk->numpasses; passno < l_nb_passes; ++passno) {
875 ++nump;
876 len += pass->len;
877
878 if (pass->term || passno == (cblk->numpasses + layer->numpasses) - 1) {
879 increment = (OPJ_UINT32)opj_int_max((OPJ_INT32)increment,
880 opj_int_floorlog2((OPJ_INT32)len) + 1
881 - ((OPJ_INT32)cblk->numlenbits + opj_int_floorlog2((OPJ_INT32)nump)));
882 len = 0;
883 nump = 0;
884 }
885
886 ++pass;
887 }
888 opj_t2_putcommacode(bio, (OPJ_INT32)increment);
889
890 /* computation of the new Length indicator */
891 cblk->numlenbits += increment;
892
893 pass = cblk->passes + cblk->numpasses;
894 /* insertion of the codeword segment length */
895 for (passno = cblk->numpasses; passno < l_nb_passes; ++passno) {
896 nump++;
897 len += pass->len;
898
899 if (pass->term || passno == (cblk->numpasses + layer->numpasses) - 1) {
900 opj_bio_write(bio, (OPJ_UINT32)len,
901 cblk->numlenbits + (OPJ_UINT32)opj_int_floorlog2((OPJ_INT32)nump));
902 len = 0;
903 nump = 0;
904 }
905 ++pass;
906 }
907
908 ++cblk;
909 }
910 }
911
912 if (!opj_bio_flush(bio)) {
913 opj_bio_destroy(bio);
914 return OPJ_FALSE; /* modified to eliminate longjmp !! */
915 }
916
917 l_nb_bytes = (OPJ_UINT32)opj_bio_numbytes(bio);
918 c += l_nb_bytes;
919 length -= l_nb_bytes;
920
921 opj_bio_destroy(bio);
922
923 /* <EPH 0xff92> */
924 if (tcp->csty & J2K_CP_CSTY_EPH) {
925 if (length < 2) {
926 if (p_t2_mode == FINAL_PASS) {
927 opj_event_msg(p_manager, EVT_ERROR,
928 "opj_t2_encode_packet(): only %u bytes remaining in "
929 "output buffer. %u needed.\n",
930 length, 2);
931 }
932 return OPJ_FALSE;
933 }
934 c[0] = 255;
935 c[1] = 146;
936 c += 2;
937 length -= 2;
938 }
939 /* </EPH> */
940
941 /* << INDEX */
942 /* End of packet header position. Currently only represents the distance to start of packet
943 Will be updated later by incrementing with packet start value*/
944 if (cstr_info && cstr_info->index_write) {
945 opj_packet_info_t *info_PK = &cstr_info->tile[tileno].packet[cstr_info->packno];
946 info_PK->end_ph_pos = (OPJ_INT32)(c - dest);
947 }
948 /* INDEX >> */
949
950 /* Writing the packet body */
951 band = res->bands;
952 for (bandno = 0; !packet_empty && bandno < res->numbands; bandno++, ++band) {
953 opj_tcd_precinct_t *prc;
954
955 /* Skip empty bands */
956 if (opj_tcd_is_band_empty(band)) {
957 continue;
958 }
959
960 prc = &band->precincts[precno];
961 l_nb_blocks = prc->cw * prc->ch;
962 cblk = prc->cblks.enc;
963
964 for (cblkno = 0; cblkno < l_nb_blocks; ++cblkno) {
965 opj_tcd_layer_t *layer = &cblk->layers[layno];
966
967 if (!layer->numpasses) {
968 ++cblk;
969 continue;
970 }
971
972 if (layer->len > length) {
973 if (p_t2_mode == FINAL_PASS) {
974 opj_event_msg(p_manager, EVT_ERROR,
975 "opj_t2_encode_packet(): only %u bytes remaining in "
976 "output buffer. %u needed.\n",
977 length, layer->len);
978 }
979 return OPJ_FALSE;
980 }
981
982 memcpy(c, layer->data, layer->len);
983 cblk->numpasses += layer->numpasses;
984 c += layer->len;
985 length -= layer->len;
986
987 /* << INDEX */
988 if (cstr_info && cstr_info->index_write) {
989 opj_packet_info_t *info_PK = &cstr_info->tile[tileno].packet[cstr_info->packno];
990 info_PK->disto += layer->disto;
991 if (cstr_info->D_max < info_PK->disto) {
992 cstr_info->D_max = info_PK->disto;
993 }
994 }
995
996 ++cblk;
997 /* INDEX >> */
998 }
999 }
1000
1001 assert(c >= dest);
1002 * p_data_written += (OPJ_UINT32)(c - dest);
1003
1004 return OPJ_TRUE;
1005 }
1006
opj_t2_skip_packet(opj_t2_t * p_t2,opj_tcd_tile_t * p_tile,opj_tcp_t * p_tcp,opj_pi_iterator_t * p_pi,OPJ_BYTE * p_src,OPJ_UINT32 * p_data_read,OPJ_UINT32 p_max_length,opj_packet_info_t * p_pack_info,opj_event_mgr_t * p_manager)1007 static OPJ_BOOL opj_t2_skip_packet(opj_t2_t* p_t2,
1008 opj_tcd_tile_t *p_tile,
1009 opj_tcp_t *p_tcp,
1010 opj_pi_iterator_t *p_pi,
1011 OPJ_BYTE *p_src,
1012 OPJ_UINT32 * p_data_read,
1013 OPJ_UINT32 p_max_length,
1014 opj_packet_info_t *p_pack_info,
1015 opj_event_mgr_t *p_manager)
1016 {
1017 OPJ_BOOL l_read_data;
1018 OPJ_UINT32 l_nb_bytes_read = 0;
1019 OPJ_UINT32 l_nb_total_bytes_read = 0;
1020
1021 *p_data_read = 0;
1022
1023 if (! opj_t2_read_packet_header(p_t2, p_tile, p_tcp, p_pi, &l_read_data, p_src,
1024 &l_nb_bytes_read, p_max_length, p_pack_info, p_manager)) {
1025 return OPJ_FALSE;
1026 }
1027
1028 p_src += l_nb_bytes_read;
1029 l_nb_total_bytes_read += l_nb_bytes_read;
1030 p_max_length -= l_nb_bytes_read;
1031
1032 /* we should read data for the packet */
1033 if (l_read_data) {
1034 l_nb_bytes_read = 0;
1035
1036 if (! opj_t2_skip_packet_data(p_t2, p_tile, p_pi, &l_nb_bytes_read,
1037 p_max_length, p_pack_info, p_manager)) {
1038 return OPJ_FALSE;
1039 }
1040
1041 l_nb_total_bytes_read += l_nb_bytes_read;
1042 }
1043 *p_data_read = l_nb_total_bytes_read;
1044
1045 return OPJ_TRUE;
1046 }
1047
1048
opj_t2_read_packet_header(opj_t2_t * p_t2,opj_tcd_tile_t * p_tile,opj_tcp_t * p_tcp,opj_pi_iterator_t * p_pi,OPJ_BOOL * p_is_data_present,OPJ_BYTE * p_src_data,OPJ_UINT32 * p_data_read,OPJ_UINT32 p_max_length,opj_packet_info_t * p_pack_info,opj_event_mgr_t * p_manager)1049 static OPJ_BOOL opj_t2_read_packet_header(opj_t2_t* p_t2,
1050 opj_tcd_tile_t *p_tile,
1051 opj_tcp_t *p_tcp,
1052 opj_pi_iterator_t *p_pi,
1053 OPJ_BOOL * p_is_data_present,
1054 OPJ_BYTE *p_src_data,
1055 OPJ_UINT32 * p_data_read,
1056 OPJ_UINT32 p_max_length,
1057 opj_packet_info_t *p_pack_info,
1058 opj_event_mgr_t *p_manager)
1059
1060 {
1061 /* loop */
1062 OPJ_UINT32 bandno, cblkno;
1063 OPJ_UINT32 l_nb_code_blocks;
1064 OPJ_UINT32 l_remaining_length;
1065 OPJ_UINT32 l_header_length;
1066 OPJ_UINT32 * l_modified_length_ptr = 00;
1067 OPJ_BYTE *l_current_data = p_src_data;
1068 opj_cp_t *l_cp = p_t2->cp;
1069 opj_bio_t *l_bio = 00; /* BIO component */
1070 opj_tcd_band_t *l_band = 00;
1071 opj_tcd_cblk_dec_t* l_cblk = 00;
1072 opj_tcd_resolution_t* l_res =
1073 &p_tile->comps[p_pi->compno].resolutions[p_pi->resno];
1074
1075 OPJ_BYTE *l_header_data = 00;
1076 OPJ_BYTE **l_header_data_start = 00;
1077
1078 OPJ_UINT32 l_present;
1079
1080 if (p_pi->layno == 0) {
1081 l_band = l_res->bands;
1082
1083 /* reset tagtrees */
1084 for (bandno = 0; bandno < l_res->numbands; ++bandno) {
1085 if (!opj_tcd_is_band_empty(l_band)) {
1086 opj_tcd_precinct_t *l_prc = &l_band->precincts[p_pi->precno];
1087 if (!(p_pi->precno < (l_band->precincts_data_size / sizeof(
1088 opj_tcd_precinct_t)))) {
1089 opj_event_msg(p_manager, EVT_ERROR, "Invalid precinct\n");
1090 return OPJ_FALSE;
1091 }
1092
1093
1094 opj_tgt_reset(l_prc->incltree);
1095 opj_tgt_reset(l_prc->imsbtree);
1096 l_cblk = l_prc->cblks.dec;
1097
1098 l_nb_code_blocks = l_prc->cw * l_prc->ch;
1099 for (cblkno = 0; cblkno < l_nb_code_blocks; ++cblkno) {
1100 l_cblk->numsegs = 0;
1101 l_cblk->real_num_segs = 0;
1102 ++l_cblk;
1103 }
1104 }
1105
1106 ++l_band;
1107 }
1108 }
1109
1110 /* SOP markers */
1111
1112 if (p_tcp->csty & J2K_CP_CSTY_SOP) {
1113 if (p_max_length < 6) {
1114 opj_event_msg(p_manager, EVT_WARNING,
1115 "Not enough space for expected SOP marker\n");
1116 } else if ((*l_current_data) != 0xff || (*(l_current_data + 1) != 0x91)) {
1117 opj_event_msg(p_manager, EVT_WARNING, "Expected SOP marker\n");
1118 } else {
1119 l_current_data += 6;
1120 }
1121
1122 /** TODO : check the Nsop value */
1123 }
1124
1125 /*
1126 When the marker PPT/PPM is used the packet header are store in PPT/PPM marker
1127 This part deal with this caracteristic
1128 step 1: Read packet header in the saved structure
1129 step 2: Return to codestream for decoding
1130 */
1131
1132 l_bio = opj_bio_create();
1133 if (! l_bio) {
1134 return OPJ_FALSE;
1135 }
1136
1137 if (l_cp->ppm == 1) { /* PPM */
1138 l_header_data_start = &l_cp->ppm_data;
1139 l_header_data = *l_header_data_start;
1140 l_modified_length_ptr = &(l_cp->ppm_len);
1141
1142 } else if (p_tcp->ppt == 1) { /* PPT */
1143 l_header_data_start = &(p_tcp->ppt_data);
1144 l_header_data = *l_header_data_start;
1145 l_modified_length_ptr = &(p_tcp->ppt_len);
1146 } else { /* Normal Case */
1147 l_header_data_start = &(l_current_data);
1148 l_header_data = *l_header_data_start;
1149 l_remaining_length = (OPJ_UINT32)(p_src_data + p_max_length - l_header_data);
1150 l_modified_length_ptr = &(l_remaining_length);
1151 }
1152
1153 opj_bio_init_dec(l_bio, l_header_data, *l_modified_length_ptr);
1154
1155 l_present = opj_bio_read(l_bio, 1);
1156 JAS_FPRINTF(stderr, "present=%d \n", l_present);
1157 if (!l_present) {
1158 /* TODO MSD: no test to control the output of this function*/
1159 opj_bio_inalign(l_bio);
1160 l_header_data += opj_bio_numbytes(l_bio);
1161 opj_bio_destroy(l_bio);
1162
1163 /* EPH markers */
1164 if (p_tcp->csty & J2K_CP_CSTY_EPH) {
1165 if ((*l_modified_length_ptr - (OPJ_UINT32)(l_header_data -
1166 *l_header_data_start)) < 2U) {
1167 opj_event_msg(p_manager, EVT_WARNING,
1168 "Not enough space for expected EPH marker\n");
1169 } else if ((*l_header_data) != 0xff || (*(l_header_data + 1) != 0x92)) {
1170 opj_event_msg(p_manager, EVT_WARNING, "Expected EPH marker\n");
1171 } else {
1172 l_header_data += 2;
1173 }
1174 }
1175
1176 l_header_length = (OPJ_UINT32)(l_header_data - *l_header_data_start);
1177 *l_modified_length_ptr -= l_header_length;
1178 *l_header_data_start += l_header_length;
1179
1180 /* << INDEX */
1181 /* End of packet header position. Currently only represents the distance to start of packet
1182 Will be updated later by incrementing with packet start value */
1183 if (p_pack_info) {
1184 p_pack_info->end_ph_pos = (OPJ_INT32)(l_current_data - p_src_data);
1185 }
1186 /* INDEX >> */
1187
1188 * p_is_data_present = OPJ_FALSE;
1189 *p_data_read = (OPJ_UINT32)(l_current_data - p_src_data);
1190 return OPJ_TRUE;
1191 }
1192
1193 l_band = l_res->bands;
1194 for (bandno = 0; bandno < l_res->numbands; ++bandno, ++l_band) {
1195 opj_tcd_precinct_t *l_prc = &(l_band->precincts[p_pi->precno]);
1196
1197 if (opj_tcd_is_band_empty(l_band)) {
1198 continue;
1199 }
1200
1201 l_nb_code_blocks = l_prc->cw * l_prc->ch;
1202 l_cblk = l_prc->cblks.dec;
1203 for (cblkno = 0; cblkno < l_nb_code_blocks; cblkno++) {
1204 OPJ_UINT32 l_included, l_increment, l_segno;
1205 OPJ_INT32 n;
1206
1207 /* if cblk not yet included before --> inclusion tagtree */
1208 if (!l_cblk->numsegs) {
1209 l_included = opj_tgt_decode(l_bio, l_prc->incltree, cblkno,
1210 (OPJ_INT32)(p_pi->layno + 1));
1211 /* else one bit */
1212 } else {
1213 l_included = opj_bio_read(l_bio, 1);
1214 }
1215
1216 /* if cblk not included */
1217 if (!l_included) {
1218 l_cblk->numnewpasses = 0;
1219 ++l_cblk;
1220 JAS_FPRINTF(stderr, "included=%d \n", l_included);
1221 continue;
1222 }
1223
1224 /* if cblk not yet included --> zero-bitplane tagtree */
1225 if (!l_cblk->numsegs) {
1226 OPJ_UINT32 i = 0;
1227
1228 while (!opj_tgt_decode(l_bio, l_prc->imsbtree, cblkno, (OPJ_INT32)i)) {
1229 ++i;
1230 }
1231
1232 l_cblk->numbps = (OPJ_UINT32)l_band->numbps + 1 - i;
1233 l_cblk->numlenbits = 3;
1234 }
1235
1236 /* number of coding passes */
1237 l_cblk->numnewpasses = opj_t2_getnumpasses(l_bio);
1238 l_increment = opj_t2_getcommacode(l_bio);
1239
1240 /* length indicator increment */
1241 l_cblk->numlenbits += l_increment;
1242 l_segno = 0;
1243
1244 if (!l_cblk->numsegs) {
1245 if (! opj_t2_init_seg(l_cblk, l_segno, p_tcp->tccps[p_pi->compno].cblksty, 1)) {
1246 opj_bio_destroy(l_bio);
1247 return OPJ_FALSE;
1248 }
1249 } else {
1250 l_segno = l_cblk->numsegs - 1;
1251 if (l_cblk->segs[l_segno].numpasses == l_cblk->segs[l_segno].maxpasses) {
1252 ++l_segno;
1253 if (! opj_t2_init_seg(l_cblk, l_segno, p_tcp->tccps[p_pi->compno].cblksty, 0)) {
1254 opj_bio_destroy(l_bio);
1255 return OPJ_FALSE;
1256 }
1257 }
1258 }
1259 n = (OPJ_INT32)l_cblk->numnewpasses;
1260
1261 do {
1262 OPJ_UINT32 bit_number;
1263 l_cblk->segs[l_segno].numnewpasses = (OPJ_UINT32)opj_int_min((OPJ_INT32)(
1264 l_cblk->segs[l_segno].maxpasses - l_cblk->segs[l_segno].numpasses), n);
1265 bit_number = l_cblk->numlenbits + opj_uint_floorlog2(
1266 l_cblk->segs[l_segno].numnewpasses);
1267 if (bit_number > 32) {
1268 opj_event_msg(p_manager, EVT_ERROR,
1269 "Invalid bit number %d in opj_t2_read_packet_header()\n",
1270 bit_number);
1271 opj_bio_destroy(l_bio);
1272 return OPJ_FALSE;
1273 }
1274 l_cblk->segs[l_segno].newlen = opj_bio_read(l_bio, bit_number);
1275 JAS_FPRINTF(stderr, "included=%d numnewpasses=%d increment=%d len=%d \n",
1276 l_included, l_cblk->segs[l_segno].numnewpasses, l_increment,
1277 l_cblk->segs[l_segno].newlen);
1278
1279 n -= (OPJ_INT32)l_cblk->segs[l_segno].numnewpasses;
1280 if (n > 0) {
1281 ++l_segno;
1282
1283 if (! opj_t2_init_seg(l_cblk, l_segno, p_tcp->tccps[p_pi->compno].cblksty, 0)) {
1284 opj_bio_destroy(l_bio);
1285 return OPJ_FALSE;
1286 }
1287 }
1288 } while (n > 0);
1289
1290 ++l_cblk;
1291 }
1292 }
1293
1294 if (!opj_bio_inalign(l_bio)) {
1295 opj_bio_destroy(l_bio);
1296 return OPJ_FALSE;
1297 }
1298
1299 l_header_data += opj_bio_numbytes(l_bio);
1300 opj_bio_destroy(l_bio);
1301
1302 /* EPH markers */
1303 if (p_tcp->csty & J2K_CP_CSTY_EPH) {
1304 if ((*l_modified_length_ptr - (OPJ_UINT32)(l_header_data -
1305 *l_header_data_start)) < 2U) {
1306 opj_event_msg(p_manager, EVT_WARNING,
1307 "Not enough space for expected EPH marker\n");
1308 } else if ((*l_header_data) != 0xff || (*(l_header_data + 1) != 0x92)) {
1309 opj_event_msg(p_manager, EVT_WARNING, "Expected EPH marker\n");
1310 } else {
1311 l_header_data += 2;
1312 }
1313 }
1314
1315 l_header_length = (OPJ_UINT32)(l_header_data - *l_header_data_start);
1316 JAS_FPRINTF(stderr, "hdrlen=%d \n", l_header_length);
1317 JAS_FPRINTF(stderr, "packet body\n");
1318 *l_modified_length_ptr -= l_header_length;
1319 *l_header_data_start += l_header_length;
1320
1321 /* << INDEX */
1322 /* End of packet header position. Currently only represents the distance to start of packet
1323 Will be updated later by incrementing with packet start value */
1324 if (p_pack_info) {
1325 p_pack_info->end_ph_pos = (OPJ_INT32)(l_current_data - p_src_data);
1326 }
1327 /* INDEX >> */
1328
1329 *p_is_data_present = OPJ_TRUE;
1330 *p_data_read = (OPJ_UINT32)(l_current_data - p_src_data);
1331
1332 return OPJ_TRUE;
1333 }
1334
opj_t2_read_packet_data(opj_t2_t * p_t2,opj_tcd_tile_t * p_tile,opj_pi_iterator_t * p_pi,OPJ_BYTE * p_src_data,OPJ_UINT32 * p_data_read,OPJ_UINT32 p_max_length,opj_packet_info_t * pack_info,opj_event_mgr_t * p_manager)1335 static OPJ_BOOL opj_t2_read_packet_data(opj_t2_t* p_t2,
1336 opj_tcd_tile_t *p_tile,
1337 opj_pi_iterator_t *p_pi,
1338 OPJ_BYTE *p_src_data,
1339 OPJ_UINT32 * p_data_read,
1340 OPJ_UINT32 p_max_length,
1341 opj_packet_info_t *pack_info,
1342 opj_event_mgr_t* p_manager)
1343 {
1344 OPJ_UINT32 bandno, cblkno;
1345 OPJ_UINT32 l_nb_code_blocks;
1346 OPJ_BYTE *l_current_data = p_src_data;
1347 opj_tcd_band_t *l_band = 00;
1348 opj_tcd_cblk_dec_t* l_cblk = 00;
1349 opj_tcd_resolution_t* l_res =
1350 &p_tile->comps[p_pi->compno].resolutions[p_pi->resno];
1351
1352 OPJ_ARG_NOT_USED(p_t2);
1353 OPJ_ARG_NOT_USED(pack_info);
1354
1355 l_band = l_res->bands;
1356 for (bandno = 0; bandno < l_res->numbands; ++bandno) {
1357 opj_tcd_precinct_t *l_prc = &l_band->precincts[p_pi->precno];
1358
1359 if ((l_band->x1 - l_band->x0 == 0) || (l_band->y1 - l_band->y0 == 0)) {
1360 ++l_band;
1361 continue;
1362 }
1363
1364 l_nb_code_blocks = l_prc->cw * l_prc->ch;
1365 l_cblk = l_prc->cblks.dec;
1366
1367 for (cblkno = 0; cblkno < l_nb_code_blocks; ++cblkno) {
1368 opj_tcd_seg_t *l_seg = 00;
1369
1370 if (!l_cblk->numnewpasses) {
1371 /* nothing to do */
1372 ++l_cblk;
1373 continue;
1374 }
1375
1376 if (!l_cblk->numsegs) {
1377 l_seg = l_cblk->segs;
1378 ++l_cblk->numsegs;
1379 } else {
1380 l_seg = &l_cblk->segs[l_cblk->numsegs - 1];
1381
1382 if (l_seg->numpasses == l_seg->maxpasses) {
1383 ++l_seg;
1384 ++l_cblk->numsegs;
1385 }
1386 }
1387
1388 do {
1389 /* Check possible overflow (on l_current_data only, assumes input args already checked) then size */
1390 if ((((OPJ_SIZE_T)l_current_data + (OPJ_SIZE_T)l_seg->newlen) <
1391 (OPJ_SIZE_T)l_current_data) ||
1392 (l_current_data + l_seg->newlen > p_src_data + p_max_length)) {
1393 opj_event_msg(p_manager, EVT_ERROR,
1394 "read: segment too long (%d) with max (%d) for codeblock %d (p=%d, b=%d, r=%d, c=%d)\n",
1395 l_seg->newlen, p_max_length, cblkno, p_pi->precno, bandno, p_pi->resno,
1396 p_pi->compno);
1397 return OPJ_FALSE;
1398 }
1399
1400 #ifdef USE_JPWL
1401 /* we need here a j2k handle to verify if making a check to
1402 the validity of cblocks parameters is selected from user (-W) */
1403
1404 /* let's check that we are not exceeding */
1405 if ((l_cblk->len + l_seg->newlen) > 8192) {
1406 opj_event_msg(p_manager, EVT_WARNING,
1407 "JPWL: segment too long (%d) for codeblock %d (p=%d, b=%d, r=%d, c=%d)\n",
1408 l_seg->newlen, cblkno, p_pi->precno, bandno, p_pi->resno, p_pi->compno);
1409 if (!JPWL_ASSUME) {
1410 opj_event_msg(p_manager, EVT_ERROR, "JPWL: giving up\n");
1411 return OPJ_FALSE;
1412 }
1413 l_seg->newlen = 8192 - l_cblk->len;
1414 opj_event_msg(p_manager, EVT_WARNING, " - truncating segment to %d\n",
1415 l_seg->newlen);
1416 break;
1417 };
1418
1419 #endif /* USE_JPWL */
1420
1421 if (l_cblk->numchunks == l_cblk->numchunksalloc) {
1422 OPJ_UINT32 l_numchunksalloc = l_cblk->numchunksalloc * 2 + 1;
1423 opj_tcd_seg_data_chunk_t* l_chunks =
1424 (opj_tcd_seg_data_chunk_t*)opj_realloc(l_cblk->chunks,
1425 l_numchunksalloc * sizeof(opj_tcd_seg_data_chunk_t));
1426 if (l_chunks == NULL) {
1427 opj_event_msg(p_manager, EVT_ERROR,
1428 "cannot allocate opj_tcd_seg_data_chunk_t* array");
1429 return OPJ_FALSE;
1430 }
1431 l_cblk->chunks = l_chunks;
1432 l_cblk->numchunksalloc = l_numchunksalloc;
1433 }
1434
1435 l_cblk->chunks[l_cblk->numchunks].data = l_current_data;
1436 l_cblk->chunks[l_cblk->numchunks].len = l_seg->newlen;
1437 l_cblk->numchunks ++;
1438
1439 l_current_data += l_seg->newlen;
1440 l_seg->len += l_seg->newlen;
1441 l_seg->numpasses += l_seg->numnewpasses;
1442 l_cblk->numnewpasses -= l_seg->numnewpasses;
1443
1444 l_seg->real_num_passes = l_seg->numpasses;
1445
1446 if (l_cblk->numnewpasses > 0) {
1447 ++l_seg;
1448 ++l_cblk->numsegs;
1449 }
1450 } while (l_cblk->numnewpasses > 0);
1451
1452 l_cblk->real_num_segs = l_cblk->numsegs;
1453 ++l_cblk;
1454 } /* next code_block */
1455
1456 ++l_band;
1457 }
1458
1459 *(p_data_read) = (OPJ_UINT32)(l_current_data - p_src_data);
1460
1461
1462 return OPJ_TRUE;
1463 }
1464
opj_t2_skip_packet_data(opj_t2_t * p_t2,opj_tcd_tile_t * p_tile,opj_pi_iterator_t * p_pi,OPJ_UINT32 * p_data_read,OPJ_UINT32 p_max_length,opj_packet_info_t * pack_info,opj_event_mgr_t * p_manager)1465 static OPJ_BOOL opj_t2_skip_packet_data(opj_t2_t* p_t2,
1466 opj_tcd_tile_t *p_tile,
1467 opj_pi_iterator_t *p_pi,
1468 OPJ_UINT32 * p_data_read,
1469 OPJ_UINT32 p_max_length,
1470 opj_packet_info_t *pack_info,
1471 opj_event_mgr_t *p_manager)
1472 {
1473 OPJ_UINT32 bandno, cblkno;
1474 OPJ_UINT32 l_nb_code_blocks;
1475 opj_tcd_band_t *l_band = 00;
1476 opj_tcd_cblk_dec_t* l_cblk = 00;
1477 opj_tcd_resolution_t* l_res =
1478 &p_tile->comps[p_pi->compno].resolutions[p_pi->resno];
1479
1480 OPJ_ARG_NOT_USED(p_t2);
1481 OPJ_ARG_NOT_USED(pack_info);
1482
1483 *p_data_read = 0;
1484 l_band = l_res->bands;
1485
1486 for (bandno = 0; bandno < l_res->numbands; ++bandno) {
1487 opj_tcd_precinct_t *l_prc = &l_band->precincts[p_pi->precno];
1488
1489 if ((l_band->x1 - l_band->x0 == 0) || (l_band->y1 - l_band->y0 == 0)) {
1490 ++l_band;
1491 continue;
1492 }
1493
1494 l_nb_code_blocks = l_prc->cw * l_prc->ch;
1495 l_cblk = l_prc->cblks.dec;
1496
1497 for (cblkno = 0; cblkno < l_nb_code_blocks; ++cblkno) {
1498 opj_tcd_seg_t *l_seg = 00;
1499
1500 if (!l_cblk->numnewpasses) {
1501 /* nothing to do */
1502 ++l_cblk;
1503 continue;
1504 }
1505
1506 if (!l_cblk->numsegs) {
1507 l_seg = l_cblk->segs;
1508 ++l_cblk->numsegs;
1509 } else {
1510 l_seg = &l_cblk->segs[l_cblk->numsegs - 1];
1511
1512 if (l_seg->numpasses == l_seg->maxpasses) {
1513 ++l_seg;
1514 ++l_cblk->numsegs;
1515 }
1516 }
1517
1518 do {
1519 /* Check possible overflow then size */
1520 if (((*p_data_read + l_seg->newlen) < (*p_data_read)) ||
1521 ((*p_data_read + l_seg->newlen) > p_max_length)) {
1522 opj_event_msg(p_manager, EVT_ERROR,
1523 "skip: segment too long (%d) with max (%d) for codeblock %d (p=%d, b=%d, r=%d, c=%d)\n",
1524 l_seg->newlen, p_max_length, cblkno, p_pi->precno, bandno, p_pi->resno,
1525 p_pi->compno);
1526 return OPJ_FALSE;
1527 }
1528
1529 #ifdef USE_JPWL
1530 /* we need here a j2k handle to verify if making a check to
1531 the validity of cblocks parameters is selected from user (-W) */
1532
1533 /* let's check that we are not exceeding */
1534 if ((l_cblk->len + l_seg->newlen) > 8192) {
1535 opj_event_msg(p_manager, EVT_WARNING,
1536 "JPWL: segment too long (%d) for codeblock %d (p=%d, b=%d, r=%d, c=%d)\n",
1537 l_seg->newlen, cblkno, p_pi->precno, bandno, p_pi->resno, p_pi->compno);
1538 if (!JPWL_ASSUME) {
1539 opj_event_msg(p_manager, EVT_ERROR, "JPWL: giving up\n");
1540 return -999;
1541 }
1542 l_seg->newlen = 8192 - l_cblk->len;
1543 opj_event_msg(p_manager, EVT_WARNING, " - truncating segment to %d\n",
1544 l_seg->newlen);
1545 break;
1546 };
1547
1548 #endif /* USE_JPWL */
1549 JAS_FPRINTF(stderr, "p_data_read (%d) newlen (%d) \n", *p_data_read,
1550 l_seg->newlen);
1551 *(p_data_read) += l_seg->newlen;
1552
1553 l_seg->numpasses += l_seg->numnewpasses;
1554 l_cblk->numnewpasses -= l_seg->numnewpasses;
1555 if (l_cblk->numnewpasses > 0) {
1556 ++l_seg;
1557 ++l_cblk->numsegs;
1558 }
1559 } while (l_cblk->numnewpasses > 0);
1560
1561 ++l_cblk;
1562 }
1563
1564 ++l_band;
1565 }
1566
1567 return OPJ_TRUE;
1568 }
1569
1570
opj_t2_init_seg(opj_tcd_cblk_dec_t * cblk,OPJ_UINT32 index,OPJ_UINT32 cblksty,OPJ_UINT32 first)1571 static OPJ_BOOL opj_t2_init_seg(opj_tcd_cblk_dec_t* cblk,
1572 OPJ_UINT32 index,
1573 OPJ_UINT32 cblksty,
1574 OPJ_UINT32 first)
1575 {
1576 opj_tcd_seg_t* seg = 00;
1577 OPJ_UINT32 l_nb_segs = index + 1;
1578
1579 if (l_nb_segs > cblk->m_current_max_segs) {
1580 opj_tcd_seg_t* new_segs;
1581 OPJ_UINT32 l_m_current_max_segs = cblk->m_current_max_segs +
1582 OPJ_J2K_DEFAULT_NB_SEGS;
1583
1584 new_segs = (opj_tcd_seg_t*) opj_realloc(cblk->segs,
1585 l_m_current_max_segs * sizeof(opj_tcd_seg_t));
1586 if (! new_segs) {
1587 /* opj_event_msg(p_manager, EVT_ERROR, "Not enough memory to initialize segment %d\n", l_nb_segs); */
1588 return OPJ_FALSE;
1589 }
1590 cblk->segs = new_segs;
1591 memset(new_segs + cblk->m_current_max_segs,
1592 0, OPJ_J2K_DEFAULT_NB_SEGS * sizeof(opj_tcd_seg_t));
1593 cblk->m_current_max_segs = l_m_current_max_segs;
1594 }
1595
1596 seg = &cblk->segs[index];
1597 opj_tcd_reinit_segment(seg);
1598
1599 if (cblksty & J2K_CCP_CBLKSTY_TERMALL) {
1600 seg->maxpasses = 1;
1601 } else if (cblksty & J2K_CCP_CBLKSTY_LAZY) {
1602 if (first) {
1603 seg->maxpasses = 10;
1604 } else {
1605 seg->maxpasses = (((seg - 1)->maxpasses == 1) ||
1606 ((seg - 1)->maxpasses == 10)) ? 2 : 1;
1607 }
1608 } else {
1609 /* See paragraph "B.10.6 Number of coding passes" of the standard.
1610 * Probably that 109 must be interpreted a (Mb-1)*3 + 1 with Mb=37,
1611 * Mb being the maximum number of bit-planes available for the
1612 * representation of coefficients in the sub-band */
1613 seg->maxpasses = 109;
1614 }
1615
1616 return OPJ_TRUE;
1617 }
1618