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_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_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 */
opj_null_jas_fprintf(FILE * file,const char * format,...)365 static 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
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)373 OPJ_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 */
opj_t2_create(opj_image_t * p_image,opj_cp_t * p_cp)580 opj_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
opj_t2_destroy(opj_t2_t * t2)594 void opj_t2_destroy(opj_t2_t *t2)
595 {
596 if (t2) {
597 opj_free(t2);
598 }
599 }
600
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)601 static 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
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)643 static 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 #ifdef ENABLE_EMPTY_PACKET_OPTIMIZATION
671 OPJ_BOOL packet_empty = OPJ_TRUE;
672 #else
673 OPJ_BOOL packet_empty = OPJ_FALSE;
674 #endif
675
676 /* <SOP 0xff91> */
677 if (tcp->csty & J2K_CP_CSTY_SOP) {
678 if (length < 6) {
679 if (p_t2_mode == FINAL_PASS) {
680 opj_event_msg(p_manager, EVT_ERROR,
681 "opj_t2_encode_packet(): only %u bytes remaining in "
682 "output buffer. %u needed.\n",
683 length, 6);
684 }
685 return OPJ_FALSE;
686 }
687 c[0] = 255;
688 c[1] = 145;
689 c[2] = 0;
690 c[3] = 4;
691 #if 0
692 c[4] = (tile->packno % 65536) / 256;
693 c[5] = (tile->packno % 65536) % 256;
694 #else
695 c[4] = (tile->packno >> 8) & 0xff; /* packno is uint32_t */
696 c[5] = tile->packno & 0xff;
697 #endif
698 c += 6;
699 length -= 6;
700 }
701 /* </SOP> */
702
703 if (!layno) {
704 band = res->bands;
705
706 for (bandno = 0; bandno < res->numbands; ++bandno, ++band) {
707 opj_tcd_precinct_t *prc;
708
709 /* Skip empty bands */
710 if (opj_tcd_is_band_empty(band)) {
711 continue;
712 }
713
714 prc = &band->precincts[precno];
715 opj_tgt_reset(prc->incltree);
716 opj_tgt_reset(prc->imsbtree);
717
718 l_nb_blocks = prc->cw * prc->ch;
719 for (cblkno = 0; cblkno < l_nb_blocks; ++cblkno) {
720 cblk = &prc->cblks.enc[cblkno];
721
722 cblk->numpasses = 0;
723 opj_tgt_setvalue(prc->imsbtree, cblkno, band->numbps - (OPJ_INT32)cblk->numbps);
724 }
725 }
726 }
727
728 bio = opj_bio_create();
729 if (!bio) {
730 /* FIXME event manager error callback */
731 return OPJ_FALSE;
732 }
733 opj_bio_init_enc(bio, c, length);
734
735 #ifdef ENABLE_EMPTY_PACKET_OPTIMIZATION
736 /* WARNING: this code branch is disabled, since it has been reported that */
737 /* such packets cause decoding issues with cinema J2K hardware */
738 /* decoders: https://groups.google.com/forum/#!topic/openjpeg/M7M_fLX_Bco */
739
740 /* Check if the packet is empty */
741 /* Note: we could also skip that step and always write a packet header */
742 band = res->bands;
743 for (bandno = 0; bandno < res->numbands; ++bandno, ++band) {
744 opj_tcd_precinct_t *prc;
745 /* Skip empty bands */
746 if (opj_tcd_is_band_empty(band)) {
747 continue;
748 }
749
750 prc = &band->precincts[precno];
751 l_nb_blocks = prc->cw * prc->ch;
752 cblk = prc->cblks.enc;
753 for (cblkno = 0; cblkno < l_nb_blocks; cblkno++, ++cblk) {
754 opj_tcd_layer_t *layer = &cblk->layers[layno];
755
756 /* if cblk not included, go to the next cblk */
757 if (!layer->numpasses) {
758 continue;
759 }
760 packet_empty = OPJ_FALSE;
761 break;
762 }
763 if (!packet_empty) {
764 break;
765 }
766 }
767 #endif
768 opj_bio_write(bio, packet_empty ? 0 : 1, 1); /* Empty header bit */
769
770 /* Writing Packet header */
771 band = res->bands;
772 for (bandno = 0; !packet_empty &&
773 bandno < res->numbands; ++bandno, ++band) {
774 opj_tcd_precinct_t *prc;
775
776 /* Skip empty bands */
777 if (opj_tcd_is_band_empty(band)) {
778 continue;
779 }
780
781 prc = &band->precincts[precno];
782 l_nb_blocks = prc->cw * prc->ch;
783 cblk = prc->cblks.enc;
784
785 for (cblkno = 0; cblkno < l_nb_blocks; ++cblkno) {
786 opj_tcd_layer_t *layer = &cblk->layers[layno];
787
788 if (!cblk->numpasses && layer->numpasses) {
789 opj_tgt_setvalue(prc->incltree, cblkno, (OPJ_INT32)layno);
790 }
791
792 ++cblk;
793 }
794
795 cblk = prc->cblks.enc;
796 for (cblkno = 0; cblkno < l_nb_blocks; cblkno++) {
797 opj_tcd_layer_t *layer = &cblk->layers[layno];
798 OPJ_UINT32 increment = 0;
799 OPJ_UINT32 nump = 0;
800 OPJ_UINT32 len = 0, passno;
801 OPJ_UINT32 l_nb_passes;
802
803 /* cblk inclusion bits */
804 if (!cblk->numpasses) {
805 opj_tgt_encode(bio, prc->incltree, cblkno, (OPJ_INT32)(layno + 1));
806 } else {
807 opj_bio_write(bio, layer->numpasses != 0, 1);
808 }
809
810 /* if cblk not included, go to the next cblk */
811 if (!layer->numpasses) {
812 ++cblk;
813 continue;
814 }
815
816 /* if first instance of cblk --> zero bit-planes information */
817 if (!cblk->numpasses) {
818 cblk->numlenbits = 3;
819 opj_tgt_encode(bio, prc->imsbtree, cblkno, 999);
820 }
821
822 /* number of coding passes included */
823 opj_t2_putnumpasses(bio, layer->numpasses);
824 l_nb_passes = cblk->numpasses + layer->numpasses;
825 pass = cblk->passes + cblk->numpasses;
826
827 /* computation of the increase of the length indicator and insertion in the header */
828 for (passno = cblk->numpasses; passno < l_nb_passes; ++passno) {
829 ++nump;
830 len += pass->len;
831
832 if (pass->term || passno == (cblk->numpasses + layer->numpasses) - 1) {
833 increment = (OPJ_UINT32)opj_int_max((OPJ_INT32)increment,
834 opj_int_floorlog2((OPJ_INT32)len) + 1
835 - ((OPJ_INT32)cblk->numlenbits + opj_int_floorlog2((OPJ_INT32)nump)));
836 len = 0;
837 nump = 0;
838 }
839
840 ++pass;
841 }
842 opj_t2_putcommacode(bio, (OPJ_INT32)increment);
843
844 /* computation of the new Length indicator */
845 cblk->numlenbits += increment;
846
847 pass = cblk->passes + cblk->numpasses;
848 /* insertion of the codeword segment length */
849 for (passno = cblk->numpasses; passno < l_nb_passes; ++passno) {
850 nump++;
851 len += pass->len;
852
853 if (pass->term || passno == (cblk->numpasses + layer->numpasses) - 1) {
854 opj_bio_write(bio, (OPJ_UINT32)len,
855 cblk->numlenbits + (OPJ_UINT32)opj_int_floorlog2((OPJ_INT32)nump));
856 len = 0;
857 nump = 0;
858 }
859 ++pass;
860 }
861
862 ++cblk;
863 }
864 }
865
866 if (!opj_bio_flush(bio)) {
867 opj_bio_destroy(bio);
868 return OPJ_FALSE; /* modified to eliminate longjmp !! */
869 }
870
871 l_nb_bytes = (OPJ_UINT32)opj_bio_numbytes(bio);
872 c += l_nb_bytes;
873 length -= l_nb_bytes;
874
875 opj_bio_destroy(bio);
876
877 /* <EPH 0xff92> */
878 if (tcp->csty & J2K_CP_CSTY_EPH) {
879 if (length < 2) {
880 if (p_t2_mode == FINAL_PASS) {
881 opj_event_msg(p_manager, EVT_ERROR,
882 "opj_t2_encode_packet(): only %u bytes remaining in "
883 "output buffer. %u needed.\n",
884 length, 2);
885 }
886 return OPJ_FALSE;
887 }
888 c[0] = 255;
889 c[1] = 146;
890 c += 2;
891 length -= 2;
892 }
893 /* </EPH> */
894
895 /* << INDEX */
896 /* End of packet header position. Currently only represents the distance to start of packet
897 Will be updated later by incrementing with packet start value*/
898 if (cstr_info && cstr_info->index_write) {
899 opj_packet_info_t *info_PK = &cstr_info->tile[tileno].packet[cstr_info->packno];
900 info_PK->end_ph_pos = (OPJ_INT32)(c - dest);
901 }
902 /* INDEX >> */
903
904 /* Writing the packet body */
905 band = res->bands;
906 for (bandno = 0; !packet_empty && bandno < res->numbands; bandno++, ++band) {
907 opj_tcd_precinct_t *prc;
908
909 /* Skip empty bands */
910 if (opj_tcd_is_band_empty(band)) {
911 continue;
912 }
913
914 prc = &band->precincts[precno];
915 l_nb_blocks = prc->cw * prc->ch;
916 cblk = prc->cblks.enc;
917
918 for (cblkno = 0; cblkno < l_nb_blocks; ++cblkno) {
919 opj_tcd_layer_t *layer = &cblk->layers[layno];
920
921 if (!layer->numpasses) {
922 ++cblk;
923 continue;
924 }
925
926 if (layer->len > length) {
927 if (p_t2_mode == FINAL_PASS) {
928 opj_event_msg(p_manager, EVT_ERROR,
929 "opj_t2_encode_packet(): only %u bytes remaining in "
930 "output buffer. %u needed.\n",
931 length, layer->len);
932 }
933 return OPJ_FALSE;
934 }
935
936 memcpy(c, layer->data, layer->len);
937 cblk->numpasses += layer->numpasses;
938 c += layer->len;
939 length -= layer->len;
940
941 /* << INDEX */
942 if (cstr_info && cstr_info->index_write) {
943 opj_packet_info_t *info_PK = &cstr_info->tile[tileno].packet[cstr_info->packno];
944 info_PK->disto += layer->disto;
945 if (cstr_info->D_max < info_PK->disto) {
946 cstr_info->D_max = info_PK->disto;
947 }
948 }
949
950 ++cblk;
951 /* INDEX >> */
952 }
953 }
954
955 assert(c >= dest);
956 * p_data_written += (OPJ_UINT32)(c - dest);
957
958 return OPJ_TRUE;
959 }
960
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)961 static OPJ_BOOL opj_t2_skip_packet(opj_t2_t* p_t2,
962 opj_tcd_tile_t *p_tile,
963 opj_tcp_t *p_tcp,
964 opj_pi_iterator_t *p_pi,
965 OPJ_BYTE *p_src,
966 OPJ_UINT32 * p_data_read,
967 OPJ_UINT32 p_max_length,
968 opj_packet_info_t *p_pack_info,
969 opj_event_mgr_t *p_manager)
970 {
971 OPJ_BOOL l_read_data;
972 OPJ_UINT32 l_nb_bytes_read = 0;
973 OPJ_UINT32 l_nb_total_bytes_read = 0;
974
975 *p_data_read = 0;
976
977 if (! opj_t2_read_packet_header(p_t2, p_tile, p_tcp, p_pi, &l_read_data, p_src,
978 &l_nb_bytes_read, p_max_length, p_pack_info, p_manager)) {
979 return OPJ_FALSE;
980 }
981
982 p_src += l_nb_bytes_read;
983 l_nb_total_bytes_read += l_nb_bytes_read;
984 p_max_length -= l_nb_bytes_read;
985
986 /* we should read data for the packet */
987 if (l_read_data) {
988 l_nb_bytes_read = 0;
989
990 if (! opj_t2_skip_packet_data(p_t2, p_tile, p_pi, &l_nb_bytes_read,
991 p_max_length, p_pack_info, p_manager)) {
992 return OPJ_FALSE;
993 }
994
995 l_nb_total_bytes_read += l_nb_bytes_read;
996 }
997 *p_data_read = l_nb_total_bytes_read;
998
999 return OPJ_TRUE;
1000 }
1001
1002
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)1003 static OPJ_BOOL opj_t2_read_packet_header(opj_t2_t* p_t2,
1004 opj_tcd_tile_t *p_tile,
1005 opj_tcp_t *p_tcp,
1006 opj_pi_iterator_t *p_pi,
1007 OPJ_BOOL * p_is_data_present,
1008 OPJ_BYTE *p_src_data,
1009 OPJ_UINT32 * p_data_read,
1010 OPJ_UINT32 p_max_length,
1011 opj_packet_info_t *p_pack_info,
1012 opj_event_mgr_t *p_manager)
1013
1014 {
1015 /* loop */
1016 OPJ_UINT32 bandno, cblkno;
1017 OPJ_UINT32 l_nb_code_blocks;
1018 OPJ_UINT32 l_remaining_length;
1019 OPJ_UINT32 l_header_length;
1020 OPJ_UINT32 * l_modified_length_ptr = 00;
1021 OPJ_BYTE *l_current_data = p_src_data;
1022 opj_cp_t *l_cp = p_t2->cp;
1023 opj_bio_t *l_bio = 00; /* BIO component */
1024 opj_tcd_band_t *l_band = 00;
1025 opj_tcd_cblk_dec_t* l_cblk = 00;
1026 opj_tcd_resolution_t* l_res =
1027 &p_tile->comps[p_pi->compno].resolutions[p_pi->resno];
1028
1029 OPJ_BYTE *l_header_data = 00;
1030 OPJ_BYTE **l_header_data_start = 00;
1031
1032 OPJ_UINT32 l_present;
1033
1034 if (p_pi->layno == 0) {
1035 l_band = l_res->bands;
1036
1037 /* reset tagtrees */
1038 for (bandno = 0; bandno < l_res->numbands; ++bandno) {
1039 if (!opj_tcd_is_band_empty(l_band)) {
1040 opj_tcd_precinct_t *l_prc = &l_band->precincts[p_pi->precno];
1041 if (!(p_pi->precno < (l_band->precincts_data_size / sizeof(
1042 opj_tcd_precinct_t)))) {
1043 opj_event_msg(p_manager, EVT_ERROR, "Invalid precinct\n");
1044 return OPJ_FALSE;
1045 }
1046
1047
1048 opj_tgt_reset(l_prc->incltree);
1049 opj_tgt_reset(l_prc->imsbtree);
1050 l_cblk = l_prc->cblks.dec;
1051
1052 l_nb_code_blocks = l_prc->cw * l_prc->ch;
1053 for (cblkno = 0; cblkno < l_nb_code_blocks; ++cblkno) {
1054 l_cblk->numsegs = 0;
1055 l_cblk->real_num_segs = 0;
1056 ++l_cblk;
1057 }
1058 }
1059
1060 ++l_band;
1061 }
1062 }
1063
1064 /* SOP markers */
1065
1066 if (p_tcp->csty & J2K_CP_CSTY_SOP) {
1067 if (p_max_length < 6) {
1068 opj_event_msg(p_manager, EVT_WARNING,
1069 "Not enough space for expected SOP marker\n");
1070 } else if ((*l_current_data) != 0xff || (*(l_current_data + 1) != 0x91)) {
1071 opj_event_msg(p_manager, EVT_WARNING, "Expected SOP marker\n");
1072 } else {
1073 l_current_data += 6;
1074 }
1075
1076 /** TODO : check the Nsop value */
1077 }
1078
1079 /*
1080 When the marker PPT/PPM is used the packet header are store in PPT/PPM marker
1081 This part deal with this caracteristic
1082 step 1: Read packet header in the saved structure
1083 step 2: Return to codestream for decoding
1084 */
1085
1086 l_bio = opj_bio_create();
1087 if (! l_bio) {
1088 return OPJ_FALSE;
1089 }
1090
1091 if (l_cp->ppm == 1) { /* PPM */
1092 l_header_data_start = &l_cp->ppm_data;
1093 l_header_data = *l_header_data_start;
1094 l_modified_length_ptr = &(l_cp->ppm_len);
1095
1096 } else if (p_tcp->ppt == 1) { /* PPT */
1097 l_header_data_start = &(p_tcp->ppt_data);
1098 l_header_data = *l_header_data_start;
1099 l_modified_length_ptr = &(p_tcp->ppt_len);
1100 } else { /* Normal Case */
1101 l_header_data_start = &(l_current_data);
1102 l_header_data = *l_header_data_start;
1103 l_remaining_length = (OPJ_UINT32)(p_src_data + p_max_length - l_header_data);
1104 l_modified_length_ptr = &(l_remaining_length);
1105 }
1106
1107 opj_bio_init_dec(l_bio, l_header_data, *l_modified_length_ptr);
1108
1109 l_present = opj_bio_read(l_bio, 1);
1110 JAS_FPRINTF(stderr, "present=%d \n", l_present);
1111 if (!l_present) {
1112 /* TODO MSD: no test to control the output of this function*/
1113 opj_bio_inalign(l_bio);
1114 l_header_data += opj_bio_numbytes(l_bio);
1115 opj_bio_destroy(l_bio);
1116
1117 /* EPH markers */
1118 if (p_tcp->csty & J2K_CP_CSTY_EPH) {
1119 if ((*l_modified_length_ptr - (OPJ_UINT32)(l_header_data -
1120 *l_header_data_start)) < 2U) {
1121 opj_event_msg(p_manager, EVT_WARNING,
1122 "Not enough space for expected EPH marker\n");
1123 } else if ((*l_header_data) != 0xff || (*(l_header_data + 1) != 0x92)) {
1124 opj_event_msg(p_manager, EVT_WARNING, "Expected EPH marker\n");
1125 } else {
1126 l_header_data += 2;
1127 }
1128 }
1129
1130 l_header_length = (OPJ_UINT32)(l_header_data - *l_header_data_start);
1131 *l_modified_length_ptr -= l_header_length;
1132 *l_header_data_start += l_header_length;
1133
1134 /* << INDEX */
1135 /* End of packet header position. Currently only represents the distance to start of packet
1136 Will be updated later by incrementing with packet start value */
1137 if (p_pack_info) {
1138 p_pack_info->end_ph_pos = (OPJ_INT32)(l_current_data - p_src_data);
1139 }
1140 /* INDEX >> */
1141
1142 * p_is_data_present = OPJ_FALSE;
1143 *p_data_read = (OPJ_UINT32)(l_current_data - p_src_data);
1144 return OPJ_TRUE;
1145 }
1146
1147 l_band = l_res->bands;
1148 for (bandno = 0; bandno < l_res->numbands; ++bandno, ++l_band) {
1149 opj_tcd_precinct_t *l_prc = &(l_band->precincts[p_pi->precno]);
1150
1151 if (opj_tcd_is_band_empty(l_band)) {
1152 continue;
1153 }
1154
1155 l_nb_code_blocks = l_prc->cw * l_prc->ch;
1156 l_cblk = l_prc->cblks.dec;
1157 for (cblkno = 0; cblkno < l_nb_code_blocks; cblkno++) {
1158 OPJ_UINT32 l_included, l_increment, l_segno;
1159 OPJ_INT32 n;
1160
1161 /* if cblk not yet included before --> inclusion tagtree */
1162 if (!l_cblk->numsegs) {
1163 l_included = opj_tgt_decode(l_bio, l_prc->incltree, cblkno,
1164 (OPJ_INT32)(p_pi->layno + 1));
1165 /* else one bit */
1166 } else {
1167 l_included = opj_bio_read(l_bio, 1);
1168 }
1169
1170 /* if cblk not included */
1171 if (!l_included) {
1172 l_cblk->numnewpasses = 0;
1173 ++l_cblk;
1174 JAS_FPRINTF(stderr, "included=%d \n", l_included);
1175 continue;
1176 }
1177
1178 /* if cblk not yet included --> zero-bitplane tagtree */
1179 if (!l_cblk->numsegs) {
1180 OPJ_UINT32 i = 0;
1181
1182 while (!opj_tgt_decode(l_bio, l_prc->imsbtree, cblkno, (OPJ_INT32)i)) {
1183 ++i;
1184 }
1185
1186 l_cblk->numbps = (OPJ_UINT32)l_band->numbps + 1 - i;
1187 l_cblk->numlenbits = 3;
1188 }
1189
1190 /* number of coding passes */
1191 l_cblk->numnewpasses = opj_t2_getnumpasses(l_bio);
1192 l_increment = opj_t2_getcommacode(l_bio);
1193
1194 /* length indicator increment */
1195 l_cblk->numlenbits += l_increment;
1196 l_segno = 0;
1197
1198 if (!l_cblk->numsegs) {
1199 if (! opj_t2_init_seg(l_cblk, l_segno, p_tcp->tccps[p_pi->compno].cblksty, 1)) {
1200 opj_bio_destroy(l_bio);
1201 return OPJ_FALSE;
1202 }
1203 } else {
1204 l_segno = l_cblk->numsegs - 1;
1205 if (l_cblk->segs[l_segno].numpasses == l_cblk->segs[l_segno].maxpasses) {
1206 ++l_segno;
1207 if (! opj_t2_init_seg(l_cblk, l_segno, p_tcp->tccps[p_pi->compno].cblksty, 0)) {
1208 opj_bio_destroy(l_bio);
1209 return OPJ_FALSE;
1210 }
1211 }
1212 }
1213 n = (OPJ_INT32)l_cblk->numnewpasses;
1214
1215 do {
1216 OPJ_UINT32 bit_number;
1217 l_cblk->segs[l_segno].numnewpasses = (OPJ_UINT32)opj_int_min((OPJ_INT32)(
1218 l_cblk->segs[l_segno].maxpasses - l_cblk->segs[l_segno].numpasses), n);
1219 bit_number = l_cblk->numlenbits + opj_uint_floorlog2(
1220 l_cblk->segs[l_segno].numnewpasses);
1221 if (bit_number > 32) {
1222 opj_event_msg(p_manager, EVT_ERROR,
1223 "Invalid bit number %d in opj_t2_read_packet_header()\n",
1224 bit_number);
1225 opj_bio_destroy(l_bio);
1226 return OPJ_FALSE;
1227 }
1228 l_cblk->segs[l_segno].newlen = opj_bio_read(l_bio, bit_number);
1229 JAS_FPRINTF(stderr, "included=%d numnewpasses=%d increment=%d len=%d \n",
1230 l_included, l_cblk->segs[l_segno].numnewpasses, l_increment,
1231 l_cblk->segs[l_segno].newlen);
1232
1233 n -= (OPJ_INT32)l_cblk->segs[l_segno].numnewpasses;
1234 if (n > 0) {
1235 ++l_segno;
1236
1237 if (! opj_t2_init_seg(l_cblk, l_segno, p_tcp->tccps[p_pi->compno].cblksty, 0)) {
1238 opj_bio_destroy(l_bio);
1239 return OPJ_FALSE;
1240 }
1241 }
1242 } while (n > 0);
1243
1244 ++l_cblk;
1245 }
1246 }
1247
1248 if (!opj_bio_inalign(l_bio)) {
1249 opj_bio_destroy(l_bio);
1250 return OPJ_FALSE;
1251 }
1252
1253 l_header_data += opj_bio_numbytes(l_bio);
1254 opj_bio_destroy(l_bio);
1255
1256 /* EPH markers */
1257 if (p_tcp->csty & J2K_CP_CSTY_EPH) {
1258 if ((*l_modified_length_ptr - (OPJ_UINT32)(l_header_data -
1259 *l_header_data_start)) < 2U) {
1260 opj_event_msg(p_manager, EVT_WARNING,
1261 "Not enough space for expected EPH marker\n");
1262 } else if ((*l_header_data) != 0xff || (*(l_header_data + 1) != 0x92)) {
1263 opj_event_msg(p_manager, EVT_WARNING, "Expected EPH marker\n");
1264 } else {
1265 l_header_data += 2;
1266 }
1267 }
1268
1269 l_header_length = (OPJ_UINT32)(l_header_data - *l_header_data_start);
1270 JAS_FPRINTF(stderr, "hdrlen=%d \n", l_header_length);
1271 JAS_FPRINTF(stderr, "packet body\n");
1272 *l_modified_length_ptr -= l_header_length;
1273 *l_header_data_start += l_header_length;
1274
1275 /* << INDEX */
1276 /* End of packet header position. Currently only represents the distance to start of packet
1277 Will be updated later by incrementing with packet start value */
1278 if (p_pack_info) {
1279 p_pack_info->end_ph_pos = (OPJ_INT32)(l_current_data - p_src_data);
1280 }
1281 /* INDEX >> */
1282
1283 *p_is_data_present = OPJ_TRUE;
1284 *p_data_read = (OPJ_UINT32)(l_current_data - p_src_data);
1285
1286 return OPJ_TRUE;
1287 }
1288
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)1289 static OPJ_BOOL opj_t2_read_packet_data(opj_t2_t* p_t2,
1290 opj_tcd_tile_t *p_tile,
1291 opj_pi_iterator_t *p_pi,
1292 OPJ_BYTE *p_src_data,
1293 OPJ_UINT32 * p_data_read,
1294 OPJ_UINT32 p_max_length,
1295 opj_packet_info_t *pack_info,
1296 opj_event_mgr_t* p_manager)
1297 {
1298 OPJ_UINT32 bandno, cblkno;
1299 OPJ_UINT32 l_nb_code_blocks;
1300 OPJ_BYTE *l_current_data = p_src_data;
1301 opj_tcd_band_t *l_band = 00;
1302 opj_tcd_cblk_dec_t* l_cblk = 00;
1303 opj_tcd_resolution_t* l_res =
1304 &p_tile->comps[p_pi->compno].resolutions[p_pi->resno];
1305
1306 OPJ_ARG_NOT_USED(p_t2);
1307 OPJ_ARG_NOT_USED(pack_info);
1308
1309 l_band = l_res->bands;
1310 for (bandno = 0; bandno < l_res->numbands; ++bandno) {
1311 opj_tcd_precinct_t *l_prc = &l_band->precincts[p_pi->precno];
1312
1313 if ((l_band->x1 - l_band->x0 == 0) || (l_band->y1 - l_band->y0 == 0)) {
1314 ++l_band;
1315 continue;
1316 }
1317
1318 l_nb_code_blocks = l_prc->cw * l_prc->ch;
1319 l_cblk = l_prc->cblks.dec;
1320
1321 for (cblkno = 0; cblkno < l_nb_code_blocks; ++cblkno) {
1322 opj_tcd_seg_t *l_seg = 00;
1323
1324 if (!l_cblk->numnewpasses) {
1325 /* nothing to do */
1326 ++l_cblk;
1327 continue;
1328 }
1329
1330 if (!l_cblk->numsegs) {
1331 l_seg = l_cblk->segs;
1332 ++l_cblk->numsegs;
1333 } else {
1334 l_seg = &l_cblk->segs[l_cblk->numsegs - 1];
1335
1336 if (l_seg->numpasses == l_seg->maxpasses) {
1337 ++l_seg;
1338 ++l_cblk->numsegs;
1339 }
1340 }
1341
1342 do {
1343 /* Check possible overflow (on l_current_data only, assumes input args already checked) then size */
1344 if ((((OPJ_SIZE_T)l_current_data + (OPJ_SIZE_T)l_seg->newlen) <
1345 (OPJ_SIZE_T)l_current_data) ||
1346 (l_current_data + l_seg->newlen > p_src_data + p_max_length)) {
1347 opj_event_msg(p_manager, EVT_ERROR,
1348 "read: segment too long (%d) with max (%d) for codeblock %d (p=%d, b=%d, r=%d, c=%d)\n",
1349 l_seg->newlen, p_max_length, cblkno, p_pi->precno, bandno, p_pi->resno,
1350 p_pi->compno);
1351 return OPJ_FALSE;
1352 }
1353
1354 #ifdef USE_JPWL
1355 /* we need here a j2k handle to verify if making a check to
1356 the validity of cblocks parameters is selected from user (-W) */
1357
1358 /* let's check that we are not exceeding */
1359 if ((l_cblk->len + l_seg->newlen) > 8192) {
1360 opj_event_msg(p_manager, EVT_WARNING,
1361 "JPWL: segment too long (%d) for codeblock %d (p=%d, b=%d, r=%d, c=%d)\n",
1362 l_seg->newlen, cblkno, p_pi->precno, bandno, p_pi->resno, p_pi->compno);
1363 if (!JPWL_ASSUME) {
1364 opj_event_msg(p_manager, EVT_ERROR, "JPWL: giving up\n");
1365 return OPJ_FALSE;
1366 }
1367 l_seg->newlen = 8192 - l_cblk->len;
1368 opj_event_msg(p_manager, EVT_WARNING, " - truncating segment to %d\n",
1369 l_seg->newlen);
1370 break;
1371 };
1372
1373 #endif /* USE_JPWL */
1374
1375 if (l_cblk->numchunks == l_cblk->numchunksalloc) {
1376 OPJ_UINT32 l_numchunksalloc = l_cblk->numchunksalloc * 2 + 1;
1377 opj_tcd_seg_data_chunk_t* l_chunks =
1378 (opj_tcd_seg_data_chunk_t*)opj_realloc(l_cblk->chunks,
1379 l_numchunksalloc * sizeof(opj_tcd_seg_data_chunk_t));
1380 if (l_chunks == NULL) {
1381 opj_event_msg(p_manager, EVT_ERROR,
1382 "cannot allocate opj_tcd_seg_data_chunk_t* array");
1383 return OPJ_FALSE;
1384 }
1385 l_cblk->chunks = l_chunks;
1386 l_cblk->numchunksalloc = l_numchunksalloc;
1387 }
1388
1389 l_cblk->chunks[l_cblk->numchunks].data = l_current_data;
1390 l_cblk->chunks[l_cblk->numchunks].len = l_seg->newlen;
1391 l_cblk->numchunks ++;
1392
1393 l_current_data += l_seg->newlen;
1394 l_seg->len += l_seg->newlen;
1395 l_seg->numpasses += l_seg->numnewpasses;
1396 l_cblk->numnewpasses -= l_seg->numnewpasses;
1397
1398 l_seg->real_num_passes = l_seg->numpasses;
1399
1400 if (l_cblk->numnewpasses > 0) {
1401 ++l_seg;
1402 ++l_cblk->numsegs;
1403 }
1404 } while (l_cblk->numnewpasses > 0);
1405
1406 l_cblk->real_num_segs = l_cblk->numsegs;
1407 ++l_cblk;
1408 } /* next code_block */
1409
1410 ++l_band;
1411 }
1412
1413 *(p_data_read) = (OPJ_UINT32)(l_current_data - p_src_data);
1414
1415
1416 return OPJ_TRUE;
1417 }
1418
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)1419 static OPJ_BOOL opj_t2_skip_packet_data(opj_t2_t* p_t2,
1420 opj_tcd_tile_t *p_tile,
1421 opj_pi_iterator_t *p_pi,
1422 OPJ_UINT32 * p_data_read,
1423 OPJ_UINT32 p_max_length,
1424 opj_packet_info_t *pack_info,
1425 opj_event_mgr_t *p_manager)
1426 {
1427 OPJ_UINT32 bandno, cblkno;
1428 OPJ_UINT32 l_nb_code_blocks;
1429 opj_tcd_band_t *l_band = 00;
1430 opj_tcd_cblk_dec_t* l_cblk = 00;
1431 opj_tcd_resolution_t* l_res =
1432 &p_tile->comps[p_pi->compno].resolutions[p_pi->resno];
1433
1434 OPJ_ARG_NOT_USED(p_t2);
1435 OPJ_ARG_NOT_USED(pack_info);
1436
1437 *p_data_read = 0;
1438 l_band = l_res->bands;
1439
1440 for (bandno = 0; bandno < l_res->numbands; ++bandno) {
1441 opj_tcd_precinct_t *l_prc = &l_band->precincts[p_pi->precno];
1442
1443 if ((l_band->x1 - l_band->x0 == 0) || (l_band->y1 - l_band->y0 == 0)) {
1444 ++l_band;
1445 continue;
1446 }
1447
1448 l_nb_code_blocks = l_prc->cw * l_prc->ch;
1449 l_cblk = l_prc->cblks.dec;
1450
1451 for (cblkno = 0; cblkno < l_nb_code_blocks; ++cblkno) {
1452 opj_tcd_seg_t *l_seg = 00;
1453
1454 if (!l_cblk->numnewpasses) {
1455 /* nothing to do */
1456 ++l_cblk;
1457 continue;
1458 }
1459
1460 if (!l_cblk->numsegs) {
1461 l_seg = l_cblk->segs;
1462 ++l_cblk->numsegs;
1463 } else {
1464 l_seg = &l_cblk->segs[l_cblk->numsegs - 1];
1465
1466 if (l_seg->numpasses == l_seg->maxpasses) {
1467 ++l_seg;
1468 ++l_cblk->numsegs;
1469 }
1470 }
1471
1472 do {
1473 /* Check possible overflow then size */
1474 if (((*p_data_read + l_seg->newlen) < (*p_data_read)) ||
1475 ((*p_data_read + l_seg->newlen) > p_max_length)) {
1476 opj_event_msg(p_manager, EVT_ERROR,
1477 "skip: segment too long (%d) with max (%d) for codeblock %d (p=%d, b=%d, r=%d, c=%d)\n",
1478 l_seg->newlen, p_max_length, cblkno, p_pi->precno, bandno, p_pi->resno,
1479 p_pi->compno);
1480 return OPJ_FALSE;
1481 }
1482
1483 #ifdef USE_JPWL
1484 /* we need here a j2k handle to verify if making a check to
1485 the validity of cblocks parameters is selected from user (-W) */
1486
1487 /* let's check that we are not exceeding */
1488 if ((l_cblk->len + l_seg->newlen) > 8192) {
1489 opj_event_msg(p_manager, EVT_WARNING,
1490 "JPWL: segment too long (%d) for codeblock %d (p=%d, b=%d, r=%d, c=%d)\n",
1491 l_seg->newlen, cblkno, p_pi->precno, bandno, p_pi->resno, p_pi->compno);
1492 if (!JPWL_ASSUME) {
1493 opj_event_msg(p_manager, EVT_ERROR, "JPWL: giving up\n");
1494 return -999;
1495 }
1496 l_seg->newlen = 8192 - l_cblk->len;
1497 opj_event_msg(p_manager, EVT_WARNING, " - truncating segment to %d\n",
1498 l_seg->newlen);
1499 break;
1500 };
1501
1502 #endif /* USE_JPWL */
1503 JAS_FPRINTF(stderr, "p_data_read (%d) newlen (%d) \n", *p_data_read,
1504 l_seg->newlen);
1505 *(p_data_read) += l_seg->newlen;
1506
1507 l_seg->numpasses += l_seg->numnewpasses;
1508 l_cblk->numnewpasses -= l_seg->numnewpasses;
1509 if (l_cblk->numnewpasses > 0) {
1510 ++l_seg;
1511 ++l_cblk->numsegs;
1512 }
1513 } while (l_cblk->numnewpasses > 0);
1514
1515 ++l_cblk;
1516 }
1517
1518 ++l_band;
1519 }
1520
1521 return OPJ_TRUE;
1522 }
1523
1524
opj_t2_init_seg(opj_tcd_cblk_dec_t * cblk,OPJ_UINT32 index,OPJ_UINT32 cblksty,OPJ_UINT32 first)1525 static OPJ_BOOL opj_t2_init_seg(opj_tcd_cblk_dec_t* cblk,
1526 OPJ_UINT32 index,
1527 OPJ_UINT32 cblksty,
1528 OPJ_UINT32 first)
1529 {
1530 opj_tcd_seg_t* seg = 00;
1531 OPJ_UINT32 l_nb_segs = index + 1;
1532
1533 if (l_nb_segs > cblk->m_current_max_segs) {
1534 opj_tcd_seg_t* new_segs;
1535 OPJ_UINT32 l_m_current_max_segs = cblk->m_current_max_segs +
1536 OPJ_J2K_DEFAULT_NB_SEGS;
1537
1538 new_segs = (opj_tcd_seg_t*) opj_realloc(cblk->segs,
1539 l_m_current_max_segs * sizeof(opj_tcd_seg_t));
1540 if (! new_segs) {
1541 /* opj_event_msg(p_manager, EVT_ERROR, "Not enough memory to initialize segment %d\n", l_nb_segs); */
1542 return OPJ_FALSE;
1543 }
1544 cblk->segs = new_segs;
1545 memset(new_segs + cblk->m_current_max_segs,
1546 0, OPJ_J2K_DEFAULT_NB_SEGS * sizeof(opj_tcd_seg_t));
1547 cblk->m_current_max_segs = l_m_current_max_segs;
1548 }
1549
1550 seg = &cblk->segs[index];
1551 opj_tcd_reinit_segment(seg);
1552
1553 if (cblksty & J2K_CCP_CBLKSTY_TERMALL) {
1554 seg->maxpasses = 1;
1555 } else if (cblksty & J2K_CCP_CBLKSTY_LAZY) {
1556 if (first) {
1557 seg->maxpasses = 10;
1558 } else {
1559 seg->maxpasses = (((seg - 1)->maxpasses == 1) ||
1560 ((seg - 1)->maxpasses == 10)) ? 2 : 1;
1561 }
1562 } else {
1563 /* See paragraph "B.10.6 Number of coding passes" of the standard.
1564 * Probably that 109 must be interpreted a (Mb-1)*3 + 1 with Mb=37,
1565 * Mb being the maximum number of bit-planes available for the
1566 * representation of coefficients in the sub-band */
1567 seg->maxpasses = 109;
1568 }
1569
1570 return OPJ_TRUE;
1571 }
1572