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 * All rights reserved.
17 *
18 * Redistribution and use in source and binary forms, with or without
19 * modification, are permitted provided that the following conditions
20 * are met:
21 * 1. Redistributions of source code must retain the above copyright
22 * notice, this list of conditions and the following disclaimer.
23 * 2. Redistributions in binary form must reproduce the above copyright
24 * notice, this list of conditions and the following disclaimer in the
25 * documentation and/or other materials provided with the distribution.
26 *
27 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS `AS IS'
28 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
29 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
30 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
31 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
32 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
33 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
34 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
35 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
36 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
37 * POSSIBILITY OF SUCH DAMAGE.
38 */
39
40 #include "opj_includes.h"
41
42 /** @defgroup T2 T2 - Implementation of a tier-2 coding */
43 /*@{*/
44
45 /** @name Local static functions */
46 /*@{*/
47
48 static void opj_t2_putcommacode(opj_bio_t *bio, OPJ_INT32 n);
49
50 static OPJ_UINT32 opj_t2_getcommacode(opj_bio_t *bio);
51 /**
52 Variable length code for signalling delta Zil (truncation point)
53 @param bio Bit Input/Output component
54 @param n delta Zil
55 */
56 static void opj_t2_putnumpasses(opj_bio_t *bio, OPJ_UINT32 n);
57 static OPJ_UINT32 opj_t2_getnumpasses(opj_bio_t *bio);
58
59 /**
60 Encode a packet of a tile to a destination buffer
61 @param tileno Number of the tile encoded
62 @param tile Tile for which to write the packets
63 @param tcp Tile coding parameters
64 @param pi Packet identity
65 @param dest Destination buffer
66 @param p_data_written FIXME DOC
67 @param len Length of the destination buffer
68 @param cstr_info Codestream information structure
69 @return
70 */
71 static OPJ_BOOL opj_t2_encode_packet( OPJ_UINT32 tileno,
72 opj_tcd_tile_t *tile,
73 opj_tcp_t *tcp,
74 opj_pi_iterator_t *pi,
75 OPJ_BYTE *dest,
76 OPJ_UINT32 * p_data_written,
77 OPJ_UINT32 len,
78 opj_codestream_info_t *cstr_info);
79
80 /**
81 Decode a packet of a tile from a source buffer
82 @param t2 T2 handle
83 @param tile Tile for which to write the packets
84 @param tcp Tile coding parameters
85 @param pi Packet identity
86 @param src Source buffer
87 @param data_read FIXME DOC
88 @param max_length FIXME DOC
89 @param pack_info Packet information
90
91 @return FIXME DOC
92 */
93 static OPJ_BOOL opj_t2_decode_packet( opj_t2_t* t2,
94 opj_tcd_tile_t *tile,
95 opj_tcp_t *tcp,
96 opj_pi_iterator_t *pi,
97 OPJ_BYTE *src,
98 OPJ_UINT32 * data_read,
99 OPJ_UINT32 max_length,
100 opj_packet_info_t *pack_info,
101 opj_event_mgr_t *p_manager);
102
103 static OPJ_BOOL opj_t2_skip_packet( opj_t2_t* p_t2,
104 opj_tcd_tile_t *p_tile,
105 opj_tcp_t *p_tcp,
106 opj_pi_iterator_t *p_pi,
107 OPJ_BYTE *p_src,
108 OPJ_UINT32 * p_data_read,
109 OPJ_UINT32 p_max_length,
110 opj_packet_info_t *p_pack_info,
111 opj_event_mgr_t *p_manager);
112
113 static OPJ_BOOL opj_t2_read_packet_header( opj_t2_t* p_t2,
114 opj_tcd_tile_t *p_tile,
115 opj_tcp_t *p_tcp,
116 opj_pi_iterator_t *p_pi,
117 OPJ_BOOL * p_is_data_present,
118 OPJ_BYTE *p_src_data,
119 OPJ_UINT32 * p_data_read,
120 OPJ_UINT32 p_max_length,
121 opj_packet_info_t *p_pack_info,
122 opj_event_mgr_t *p_manager);
123
124 static OPJ_BOOL opj_t2_read_packet_data(opj_t2_t* p_t2,
125 opj_tcd_tile_t *p_tile,
126 opj_pi_iterator_t *p_pi,
127 OPJ_BYTE *p_src_data,
128 OPJ_UINT32 * p_data_read,
129 OPJ_UINT32 p_max_length,
130 opj_packet_info_t *pack_info,
131 opj_event_mgr_t *p_manager);
132
133 static OPJ_BOOL opj_t2_skip_packet_data(opj_t2_t* p_t2,
134 opj_tcd_tile_t *p_tile,
135 opj_pi_iterator_t *p_pi,
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 /**
142 @param cblk
143 @param index
144 @param cblksty
145 @param first
146 */
147 static OPJ_BOOL opj_t2_init_seg( opj_tcd_cblk_dec_t* cblk,
148 OPJ_UINT32 index,
149 OPJ_UINT32 cblksty,
150 OPJ_UINT32 first);
151
152 /*@}*/
153
154 /*@}*/
155
156 /* ----------------------------------------------------------------------- */
157
158 /* #define RESTART 0x04 */
opj_t2_putcommacode(opj_bio_t * bio,OPJ_INT32 n)159 static void opj_t2_putcommacode(opj_bio_t *bio, OPJ_INT32 n) {
160 while (--n >= 0) {
161 opj_bio_write(bio, 1, 1);
162 }
163 opj_bio_write(bio, 0, 1);
164 }
165
opj_t2_getcommacode(opj_bio_t * bio)166 static OPJ_UINT32 opj_t2_getcommacode(opj_bio_t *bio)
167 {
168 OPJ_UINT32 n = 0;
169 while (opj_bio_read(bio, 1)) {
170 ++n;
171 }
172 return n;
173 }
174
opj_t2_putnumpasses(opj_bio_t * bio,OPJ_UINT32 n)175 static void opj_t2_putnumpasses(opj_bio_t *bio, OPJ_UINT32 n) {
176 if (n == 1) {
177 opj_bio_write(bio, 0, 1);
178 } else if (n == 2) {
179 opj_bio_write(bio, 2, 2);
180 } else if (n <= 5) {
181 opj_bio_write(bio, 0xc | (n - 3), 4);
182 } else if (n <= 36) {
183 opj_bio_write(bio, 0x1e0 | (n - 6), 9);
184 } else if (n <= 164) {
185 opj_bio_write(bio, 0xff80 | (n - 37), 16);
186 }
187 }
188
opj_t2_getnumpasses(opj_bio_t * bio)189 static OPJ_UINT32 opj_t2_getnumpasses(opj_bio_t *bio) {
190 OPJ_UINT32 n;
191 if (!opj_bio_read(bio, 1))
192 return 1;
193 if (!opj_bio_read(bio, 1))
194 return 2;
195 if ((n = opj_bio_read(bio, 2)) != 3)
196 return (3 + n);
197 if ((n = opj_bio_read(bio, 5)) != 31)
198 return (6 + n);
199 return (37 + opj_bio_read(bio, 7));
200 }
201
202 /* ----------------------------------------------------------------------- */
203
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)204 OPJ_BOOL opj_t2_encode_packets( opj_t2_t* p_t2,
205 OPJ_UINT32 p_tile_no,
206 opj_tcd_tile_t *p_tile,
207 OPJ_UINT32 p_maxlayers,
208 OPJ_BYTE *p_dest,
209 OPJ_UINT32 * p_data_written,
210 OPJ_UINT32 p_max_len,
211 opj_codestream_info_t *cstr_info,
212 OPJ_UINT32 p_tp_num,
213 OPJ_INT32 p_tp_pos,
214 OPJ_UINT32 p_pino,
215 J2K_T2_MODE p_t2_mode)
216 {
217 OPJ_BYTE *l_current_data = p_dest;
218 OPJ_UINT32 l_nb_bytes = 0;
219 OPJ_UINT32 compno;
220 OPJ_UINT32 poc;
221 opj_pi_iterator_t *l_pi = 00;
222 opj_pi_iterator_t *l_current_pi = 00;
223 opj_image_t *l_image = p_t2->image;
224 opj_cp_t *l_cp = p_t2->cp;
225 opj_tcp_t *l_tcp = &l_cp->tcps[p_tile_no];
226 OPJ_UINT32 pocno = (l_cp->rsiz == OPJ_PROFILE_CINEMA_4K)? 2: 1;
227 OPJ_UINT32 l_max_comp = l_cp->m_specific_param.m_enc.m_max_comp_size > 0 ? l_image->numcomps : 1;
228 OPJ_UINT32 l_nb_pocs = l_tcp->numpocs + 1;
229
230 l_pi = opj_pi_initialise_encode(l_image, l_cp, p_tile_no, p_t2_mode);
231 if (!l_pi) {
232 return OPJ_FALSE;
233 }
234
235 * p_data_written = 0;
236
237 if (p_t2_mode == THRESH_CALC ){ /* Calculating threshold */
238 l_current_pi = l_pi;
239
240 for (compno = 0; compno < l_max_comp; ++compno) {
241 OPJ_UINT32 l_comp_len = 0;
242 l_current_pi = l_pi;
243
244 for (poc = 0; poc < pocno ; ++poc) {
245 OPJ_UINT32 l_tp_num = compno;
246
247 /* TODO MSD : check why this function cannot fail (cf. v1) */
248 opj_pi_create_encode(l_pi, l_cp,p_tile_no,poc,l_tp_num,p_tp_pos,p_t2_mode);
249
250 if (l_current_pi->poc.prg == OPJ_PROG_UNKNOWN) {
251 /* TODO ADE : add an error */
252 opj_pi_destroy(l_pi, l_nb_pocs);
253 return OPJ_FALSE;
254 }
255 while (opj_pi_next(l_current_pi)) {
256 if (l_current_pi->layno < p_maxlayers) {
257 l_nb_bytes = 0;
258
259 if (! opj_t2_encode_packet(p_tile_no,p_tile, l_tcp, l_current_pi, l_current_data, &l_nb_bytes, p_max_len, cstr_info)) {
260 opj_pi_destroy(l_pi, l_nb_pocs);
261 return OPJ_FALSE;
262 }
263
264 l_comp_len += l_nb_bytes;
265 l_current_data += l_nb_bytes;
266 p_max_len -= l_nb_bytes;
267
268 * p_data_written += l_nb_bytes;
269 }
270 }
271
272 if (l_cp->m_specific_param.m_enc.m_max_comp_size) {
273 if (l_comp_len > l_cp->m_specific_param.m_enc.m_max_comp_size) {
274 opj_pi_destroy(l_pi, l_nb_pocs);
275 return OPJ_FALSE;
276 }
277 }
278
279 ++l_current_pi;
280 }
281 }
282 }
283 else { /* t2_mode == FINAL_PASS */
284 opj_pi_create_encode(l_pi, l_cp,p_tile_no,p_pino,p_tp_num,p_tp_pos,p_t2_mode);
285
286 l_current_pi = &l_pi[p_pino];
287 if (l_current_pi->poc.prg == OPJ_PROG_UNKNOWN) {
288 /* TODO ADE : add an error */
289 opj_pi_destroy(l_pi, l_nb_pocs);
290 return OPJ_FALSE;
291 }
292 while (opj_pi_next(l_current_pi)) {
293 if (l_current_pi->layno < p_maxlayers) {
294 l_nb_bytes=0;
295
296 if (! opj_t2_encode_packet(p_tile_no,p_tile, l_tcp, l_current_pi, l_current_data, &l_nb_bytes, p_max_len, cstr_info)) {
297 opj_pi_destroy(l_pi, l_nb_pocs);
298 return OPJ_FALSE;
299 }
300
301 l_current_data += l_nb_bytes;
302 p_max_len -= l_nb_bytes;
303
304 * p_data_written += l_nb_bytes;
305
306 /* INDEX >> */
307 if(cstr_info) {
308 if(cstr_info->index_write) {
309 opj_tile_info_t *info_TL = &cstr_info->tile[p_tile_no];
310 opj_packet_info_t *info_PK = &info_TL->packet[cstr_info->packno];
311 if (!cstr_info->packno) {
312 info_PK->start_pos = info_TL->end_header + 1;
313 } else {
314 info_PK->start_pos = ((l_cp->m_specific_param.m_enc.m_tp_on | l_tcp->POC)&& info_PK->start_pos) ? info_PK->start_pos : info_TL->packet[cstr_info->packno - 1].end_pos + 1;
315 }
316 info_PK->end_pos = info_PK->start_pos + l_nb_bytes - 1;
317 info_PK->end_ph_pos += info_PK->start_pos - 1; /* End of packet header which now only represents the distance
318 to start of packet is incremented by value of start of packet*/
319 }
320
321 cstr_info->packno++;
322 }
323 /* << INDEX */
324 ++p_tile->packno;
325 }
326 }
327 }
328
329 opj_pi_destroy(l_pi, l_nb_pocs);
330
331 return OPJ_TRUE;
332 }
333
334 /* see issue 80 */
335 #if 0
336 #define JAS_FPRINTF fprintf
337 #else
338 /* issue 290 */
opj_null_jas_fprintf(FILE * file,const char * format,...)339 static void opj_null_jas_fprintf(FILE* file, const char * format, ...)
340 {
341 (void)file;
342 (void)format;
343 }
344 #define JAS_FPRINTF opj_null_jas_fprintf
345 #endif
346
opj_t2_decode_packets(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)347 OPJ_BOOL opj_t2_decode_packets( opj_t2_t *p_t2,
348 OPJ_UINT32 p_tile_no,
349 opj_tcd_tile_t *p_tile,
350 OPJ_BYTE *p_src,
351 OPJ_UINT32 * p_data_read,
352 OPJ_UINT32 p_max_len,
353 opj_codestream_index_t *p_cstr_index,
354 opj_event_mgr_t *p_manager)
355 {
356 OPJ_BYTE *l_current_data = p_src;
357 opj_pi_iterator_t *l_pi = 00;
358 OPJ_UINT32 pino;
359 opj_image_t *l_image = p_t2->image;
360 opj_cp_t *l_cp = p_t2->cp;
361 opj_tcp_t *l_tcp = &(p_t2->cp->tcps[p_tile_no]);
362 OPJ_UINT32 l_nb_bytes_read;
363 OPJ_UINT32 l_nb_pocs = l_tcp->numpocs + 1;
364 opj_pi_iterator_t *l_current_pi = 00;
365 #ifdef TODO_MSD
366 OPJ_UINT32 curtp = 0;
367 OPJ_UINT32 tp_start_packno;
368 #endif
369 opj_packet_info_t *l_pack_info = 00;
370 opj_image_comp_t* l_img_comp = 00;
371
372 OPJ_ARG_NOT_USED(p_cstr_index);
373
374 #ifdef TODO_MSD
375 if (p_cstr_index) {
376 l_pack_info = p_cstr_index->tile_index[p_tile_no].packet;
377 }
378 #endif
379
380 /* create a packet iterator */
381 l_pi = opj_pi_create_decode(l_image, l_cp, p_tile_no);
382 if (!l_pi) {
383 return OPJ_FALSE;
384 }
385
386
387 l_current_pi = l_pi;
388
389 for (pino = 0; pino <= l_tcp->numpocs; ++pino) {
390
391 /* if the resolution needed is too low, one dim of the tilec could be equal to zero
392 * and no packets are used to decode this resolution and
393 * l_current_pi->resno is always >= p_tile->comps[l_current_pi->compno].minimum_num_resolutions
394 * and no l_img_comp->resno_decoded are computed
395 */
396 OPJ_BOOL* first_pass_failed = NULL;
397
398 if (l_current_pi->poc.prg == OPJ_PROG_UNKNOWN) {
399 /* TODO ADE : add an error */
400 opj_pi_destroy(l_pi, l_nb_pocs);
401 return OPJ_FALSE;
402 }
403
404 first_pass_failed = (OPJ_BOOL*)opj_malloc(l_image->numcomps * sizeof(OPJ_BOOL));
405 if (!first_pass_failed)
406 {
407 opj_pi_destroy(l_pi,l_nb_pocs);
408 return OPJ_FALSE;
409 }
410 memset(first_pass_failed, OPJ_TRUE, l_image->numcomps * sizeof(OPJ_BOOL));
411
412 while (opj_pi_next(l_current_pi)) {
413 JAS_FPRINTF( stderr, "packet offset=00000166 prg=%d cmptno=%02d rlvlno=%02d prcno=%03d lyrno=%02d\n\n",
414 l_current_pi->poc.prg1, l_current_pi->compno, l_current_pi->resno, l_current_pi->precno, l_current_pi->layno );
415
416 if (l_tcp->num_layers_to_decode > l_current_pi->layno
417 && l_current_pi->resno < p_tile->comps[l_current_pi->compno].minimum_num_resolutions) {
418 l_nb_bytes_read = 0;
419
420 first_pass_failed[l_current_pi->compno] = OPJ_FALSE;
421
422 if (! opj_t2_decode_packet(p_t2,p_tile,l_tcp,l_current_pi,l_current_data,&l_nb_bytes_read,p_max_len,l_pack_info, p_manager)) {
423 opj_pi_destroy(l_pi,l_nb_pocs);
424 opj_free(first_pass_failed);
425 return OPJ_FALSE;
426 }
427
428 l_img_comp = &(l_image->comps[l_current_pi->compno]);
429 l_img_comp->resno_decoded = opj_uint_max(l_current_pi->resno, l_img_comp->resno_decoded);
430 }
431 else {
432 l_nb_bytes_read = 0;
433 if (! opj_t2_skip_packet(p_t2,p_tile,l_tcp,l_current_pi,l_current_data,&l_nb_bytes_read,p_max_len,l_pack_info, p_manager)) {
434 opj_pi_destroy(l_pi,l_nb_pocs);
435 opj_free(first_pass_failed);
436 return OPJ_FALSE;
437 }
438 }
439
440 if (first_pass_failed[l_current_pi->compno]) {
441 l_img_comp = &(l_image->comps[l_current_pi->compno]);
442 if (l_img_comp->resno_decoded == 0)
443 l_img_comp->resno_decoded = p_tile->comps[l_current_pi->compno].minimum_num_resolutions - 1;
444 }
445
446 l_current_data += l_nb_bytes_read;
447 p_max_len -= l_nb_bytes_read;
448
449 /* INDEX >> */
450 #ifdef TODO_MSD
451 if(p_cstr_info) {
452 opj_tile_info_v2_t *info_TL = &p_cstr_info->tile[p_tile_no];
453 opj_packet_info_t *info_PK = &info_TL->packet[p_cstr_info->packno];
454 tp_start_packno = 0;
455 if (!p_cstr_info->packno) {
456 info_PK->start_pos = info_TL->end_header + 1;
457 } else if (info_TL->packet[p_cstr_info->packno-1].end_pos >= (OPJ_INT32)p_cstr_info->tile[p_tile_no].tp[curtp].tp_end_pos){ /* New tile part */
458 info_TL->tp[curtp].tp_numpacks = p_cstr_info->packno - tp_start_packno; /* Number of packets in previous tile-part */
459 tp_start_packno = p_cstr_info->packno;
460 curtp++;
461 info_PK->start_pos = p_cstr_info->tile[p_tile_no].tp[curtp].tp_end_header+1;
462 } else {
463 info_PK->start_pos = (l_cp->m_specific_param.m_enc.m_tp_on && info_PK->start_pos) ? info_PK->start_pos : info_TL->packet[p_cstr_info->packno - 1].end_pos + 1;
464 }
465 info_PK->end_pos = info_PK->start_pos + l_nb_bytes_read - 1;
466 info_PK->end_ph_pos += info_PK->start_pos - 1; /* End of packet header which now only represents the distance */
467 ++p_cstr_info->packno;
468 }
469 #endif
470 /* << INDEX */
471 }
472 ++l_current_pi;
473
474 opj_free(first_pass_failed);
475 }
476 /* INDEX >> */
477 #ifdef TODO_MSD
478 if
479 (p_cstr_info) {
480 p_cstr_info->tile[p_tile_no].tp[curtp].tp_numpacks = p_cstr_info->packno - tp_start_packno; /* Number of packets in last tile-part */
481 }
482 #endif
483 /* << INDEX */
484
485 /* don't forget to release pi */
486 opj_pi_destroy(l_pi,l_nb_pocs);
487 *p_data_read = (OPJ_UINT32)(l_current_data - p_src);
488 return OPJ_TRUE;
489 }
490
491 /* ----------------------------------------------------------------------- */
492
493 /**
494 * Creates a Tier 2 handle
495 *
496 * @param p_image Source or destination image
497 * @param p_cp Image coding parameters.
498 * @return a new T2 handle if successful, NULL otherwise.
499 */
opj_t2_create(opj_image_t * p_image,opj_cp_t * p_cp)500 opj_t2_t* opj_t2_create(opj_image_t *p_image, opj_cp_t *p_cp)
501 {
502 /* create the t2 structure */
503 opj_t2_t *l_t2 = (opj_t2_t*)opj_calloc(1,sizeof(opj_t2_t));
504 if (!l_t2) {
505 return NULL;
506 }
507
508 l_t2->image = p_image;
509 l_t2->cp = p_cp;
510
511 return l_t2;
512 }
513
opj_t2_destroy(opj_t2_t * t2)514 void opj_t2_destroy(opj_t2_t *t2) {
515 if(t2) {
516 opj_free(t2);
517 }
518 }
519
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)520 static OPJ_BOOL opj_t2_decode_packet( opj_t2_t* p_t2,
521 opj_tcd_tile_t *p_tile,
522 opj_tcp_t *p_tcp,
523 opj_pi_iterator_t *p_pi,
524 OPJ_BYTE *p_src,
525 OPJ_UINT32 * p_data_read,
526 OPJ_UINT32 p_max_length,
527 opj_packet_info_t *p_pack_info,
528 opj_event_mgr_t *p_manager)
529 {
530 OPJ_BOOL l_read_data;
531 OPJ_UINT32 l_nb_bytes_read = 0;
532 OPJ_UINT32 l_nb_total_bytes_read = 0;
533
534 *p_data_read = 0;
535
536 if (! opj_t2_read_packet_header(p_t2,p_tile,p_tcp,p_pi,&l_read_data,p_src,&l_nb_bytes_read,p_max_length,p_pack_info, p_manager)) {
537 return OPJ_FALSE;
538 }
539
540 p_src += l_nb_bytes_read;
541 l_nb_total_bytes_read += l_nb_bytes_read;
542 p_max_length -= l_nb_bytes_read;
543
544 /* we should read data for the packet */
545 if (l_read_data) {
546 l_nb_bytes_read = 0;
547
548 if (! opj_t2_read_packet_data(p_t2,p_tile,p_pi,p_src,&l_nb_bytes_read,p_max_length,p_pack_info, p_manager)) {
549 return OPJ_FALSE;
550 }
551
552 l_nb_total_bytes_read += l_nb_bytes_read;
553 }
554
555 *p_data_read = l_nb_total_bytes_read;
556
557 return OPJ_TRUE;
558 }
559
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)560 static OPJ_BOOL opj_t2_encode_packet( OPJ_UINT32 tileno,
561 opj_tcd_tile_t * tile,
562 opj_tcp_t * tcp,
563 opj_pi_iterator_t *pi,
564 OPJ_BYTE *dest,
565 OPJ_UINT32 * p_data_written,
566 OPJ_UINT32 length,
567 opj_codestream_info_t *cstr_info)
568 {
569 OPJ_UINT32 bandno, cblkno;
570 OPJ_BYTE* c = dest;
571 OPJ_UINT32 l_nb_bytes;
572 OPJ_UINT32 compno = pi->compno; /* component value */
573 OPJ_UINT32 resno = pi->resno; /* resolution level value */
574 OPJ_UINT32 precno = pi->precno; /* precinct value */
575 OPJ_UINT32 layno = pi->layno; /* quality layer value */
576 OPJ_UINT32 l_nb_blocks;
577 opj_tcd_band_t *band = 00;
578 opj_tcd_cblk_enc_t* cblk = 00;
579 opj_tcd_pass_t *pass = 00;
580
581 opj_tcd_tilecomp_t *tilec = &tile->comps[compno];
582 opj_tcd_resolution_t *res = &tilec->resolutions[resno];
583
584 opj_bio_t *bio = 00; /* BIO component */
585
586 /* <SOP 0xff91> */
587 if (tcp->csty & J2K_CP_CSTY_SOP) {
588 c[0] = 255;
589 c[1] = 145;
590 c[2] = 0;
591 c[3] = 4;
592 #if 0
593 c[4] = (tile->packno % 65536) / 256;
594 c[5] = (tile->packno % 65536) % 256;
595 #else
596 c[4] = (tile->packno >> 8) & 0xff; /* packno is uint32_t */
597 c[5] = tile->packno & 0xff;
598 #endif
599 c += 6;
600 length -= 6;
601 }
602 /* </SOP> */
603
604 if (!layno) {
605 band = res->bands;
606
607 for(bandno = 0; bandno < res->numbands; ++bandno) {
608 opj_tcd_precinct_t *prc = &band->precincts[precno];
609
610 opj_tgt_reset(prc->incltree);
611 opj_tgt_reset(prc->imsbtree);
612
613 l_nb_blocks = prc->cw * prc->ch;
614 for (cblkno = 0; cblkno < l_nb_blocks; ++cblkno) {
615 cblk = &prc->cblks.enc[cblkno];
616
617 cblk->numpasses = 0;
618 opj_tgt_setvalue(prc->imsbtree, cblkno, band->numbps - (OPJ_INT32)cblk->numbps);
619 }
620 ++band;
621 }
622 }
623
624 bio = opj_bio_create();
625 if (!bio) {
626 /* FIXME event manager error callback */
627 return OPJ_FALSE;
628 }
629 opj_bio_init_enc(bio, c, length);
630 opj_bio_write(bio, 1, 1); /* Empty header bit */
631
632 /* Writing Packet header */
633 band = res->bands;
634 for (bandno = 0; bandno < res->numbands; ++bandno) {
635 opj_tcd_precinct_t *prc = &band->precincts[precno];
636
637 l_nb_blocks = prc->cw * prc->ch;
638 cblk = prc->cblks.enc;
639
640 for (cblkno = 0; cblkno < l_nb_blocks; ++cblkno) {
641 opj_tcd_layer_t *layer = &cblk->layers[layno];
642
643 if (!cblk->numpasses && layer->numpasses) {
644 opj_tgt_setvalue(prc->incltree, cblkno, (OPJ_INT32)layno);
645 }
646
647 ++cblk;
648 }
649
650 cblk = prc->cblks.enc;
651 for (cblkno = 0; cblkno < l_nb_blocks; cblkno++) {
652 opj_tcd_layer_t *layer = &cblk->layers[layno];
653 OPJ_UINT32 increment = 0;
654 OPJ_UINT32 nump = 0;
655 OPJ_UINT32 len = 0, passno;
656 OPJ_UINT32 l_nb_passes;
657
658 /* cblk inclusion bits */
659 if (!cblk->numpasses) {
660 opj_tgt_encode(bio, prc->incltree, cblkno, (OPJ_INT32)(layno + 1));
661 } else {
662 opj_bio_write(bio, layer->numpasses != 0, 1);
663 }
664
665 /* if cblk not included, go to the next cblk */
666 if (!layer->numpasses) {
667 ++cblk;
668 continue;
669 }
670
671 /* if first instance of cblk --> zero bit-planes information */
672 if (!cblk->numpasses) {
673 cblk->numlenbits = 3;
674 opj_tgt_encode(bio, prc->imsbtree, cblkno, 999);
675 }
676
677 /* number of coding passes included */
678 opj_t2_putnumpasses(bio, layer->numpasses);
679 l_nb_passes = cblk->numpasses + layer->numpasses;
680 pass = cblk->passes + cblk->numpasses;
681
682 /* computation of the increase of the length indicator and insertion in the header */
683 for (passno = cblk->numpasses; passno < l_nb_passes; ++passno) {
684 ++nump;
685 len += pass->len;
686
687 if (pass->term || passno == (cblk->numpasses + layer->numpasses) - 1) {
688 increment = (OPJ_UINT32)opj_int_max((OPJ_INT32)increment, opj_int_floorlog2((OPJ_INT32)len) + 1
689 - ((OPJ_INT32)cblk->numlenbits + opj_int_floorlog2((OPJ_INT32)nump)));
690 len = 0;
691 nump = 0;
692 }
693
694 ++pass;
695 }
696 opj_t2_putcommacode(bio, (OPJ_INT32)increment);
697
698 /* computation of the new Length indicator */
699 cblk->numlenbits += increment;
700
701 pass = cblk->passes + cblk->numpasses;
702 /* insertion of the codeword segment length */
703 for (passno = cblk->numpasses; passno < l_nb_passes; ++passno) {
704 nump++;
705 len += pass->len;
706
707 if (pass->term || passno == (cblk->numpasses + layer->numpasses) - 1) {
708 opj_bio_write(bio, (OPJ_UINT32)len, cblk->numlenbits + (OPJ_UINT32)opj_int_floorlog2((OPJ_INT32)nump));
709 len = 0;
710 nump = 0;
711 }
712 ++pass;
713 }
714
715 ++cblk;
716 }
717
718 ++band;
719 }
720
721 if (!opj_bio_flush(bio)) {
722 opj_bio_destroy(bio);
723 return OPJ_FALSE; /* modified to eliminate longjmp !! */
724 }
725
726 l_nb_bytes = (OPJ_UINT32)opj_bio_numbytes(bio);
727 c += l_nb_bytes;
728 length -= l_nb_bytes;
729
730 opj_bio_destroy(bio);
731
732 /* <EPH 0xff92> */
733 if (tcp->csty & J2K_CP_CSTY_EPH) {
734 c[0] = 255;
735 c[1] = 146;
736 c += 2;
737 length -= 2;
738 }
739 /* </EPH> */
740
741 /* << INDEX */
742 /* End of packet header position. Currently only represents the distance to start of packet
743 Will be updated later by incrementing with packet start value*/
744 if(cstr_info && cstr_info->index_write) {
745 opj_packet_info_t *info_PK = &cstr_info->tile[tileno].packet[cstr_info->packno];
746 info_PK->end_ph_pos = (OPJ_INT32)(c - dest);
747 }
748 /* INDEX >> */
749
750 /* Writing the packet body */
751 band = res->bands;
752 for (bandno = 0; bandno < res->numbands; bandno++) {
753 opj_tcd_precinct_t *prc = &band->precincts[precno];
754
755 l_nb_blocks = prc->cw * prc->ch;
756 cblk = prc->cblks.enc;
757
758 for (cblkno = 0; cblkno < l_nb_blocks; ++cblkno) {
759 opj_tcd_layer_t *layer = &cblk->layers[layno];
760
761 if (!layer->numpasses) {
762 ++cblk;
763 continue;
764 }
765
766 if (layer->len > length) {
767 return OPJ_FALSE;
768 }
769
770 memcpy(c, layer->data, layer->len);
771 cblk->numpasses += layer->numpasses;
772 c += layer->len;
773 length -= layer->len;
774
775 /* << INDEX */
776 if(cstr_info && cstr_info->index_write) {
777 opj_packet_info_t *info_PK = &cstr_info->tile[tileno].packet[cstr_info->packno];
778 info_PK->disto += layer->disto;
779 if (cstr_info->D_max < info_PK->disto) {
780 cstr_info->D_max = info_PK->disto;
781 }
782 }
783
784 ++cblk;
785 /* INDEX >> */
786 }
787 ++band;
788 }
789
790 assert( c >= dest );
791 * p_data_written += (OPJ_UINT32)(c - dest);
792
793 return OPJ_TRUE;
794 }
795
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)796 static OPJ_BOOL opj_t2_skip_packet( opj_t2_t* p_t2,
797 opj_tcd_tile_t *p_tile,
798 opj_tcp_t *p_tcp,
799 opj_pi_iterator_t *p_pi,
800 OPJ_BYTE *p_src,
801 OPJ_UINT32 * p_data_read,
802 OPJ_UINT32 p_max_length,
803 opj_packet_info_t *p_pack_info,
804 opj_event_mgr_t *p_manager)
805 {
806 OPJ_BOOL l_read_data;
807 OPJ_UINT32 l_nb_bytes_read = 0;
808 OPJ_UINT32 l_nb_total_bytes_read = 0;
809
810 *p_data_read = 0;
811
812 if (! opj_t2_read_packet_header(p_t2,p_tile,p_tcp,p_pi,&l_read_data,p_src,&l_nb_bytes_read,p_max_length,p_pack_info, p_manager)) {
813 return OPJ_FALSE;
814 }
815
816 p_src += l_nb_bytes_read;
817 l_nb_total_bytes_read += l_nb_bytes_read;
818 p_max_length -= l_nb_bytes_read;
819
820 /* we should read data for the packet */
821 if (l_read_data) {
822 l_nb_bytes_read = 0;
823
824 if (! opj_t2_skip_packet_data(p_t2,p_tile,p_pi,&l_nb_bytes_read,p_max_length,p_pack_info, p_manager)) {
825 return OPJ_FALSE;
826 }
827
828 l_nb_total_bytes_read += l_nb_bytes_read;
829 }
830 *p_data_read = l_nb_total_bytes_read;
831
832 return OPJ_TRUE;
833 }
834
835
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)836 static OPJ_BOOL opj_t2_read_packet_header( opj_t2_t* p_t2,
837 opj_tcd_tile_t *p_tile,
838 opj_tcp_t *p_tcp,
839 opj_pi_iterator_t *p_pi,
840 OPJ_BOOL * p_is_data_present,
841 OPJ_BYTE *p_src_data,
842 OPJ_UINT32 * p_data_read,
843 OPJ_UINT32 p_max_length,
844 opj_packet_info_t *p_pack_info,
845 opj_event_mgr_t *p_manager)
846
847 {
848 /* loop */
849 OPJ_UINT32 bandno, cblkno;
850 OPJ_UINT32 l_nb_code_blocks;
851 OPJ_UINT32 l_remaining_length;
852 OPJ_UINT32 l_header_length;
853 OPJ_UINT32 * l_modified_length_ptr = 00;
854 OPJ_BYTE *l_current_data = p_src_data;
855 opj_cp_t *l_cp = p_t2->cp;
856 opj_bio_t *l_bio = 00; /* BIO component */
857 opj_tcd_band_t *l_band = 00;
858 opj_tcd_cblk_dec_t* l_cblk = 00;
859 opj_tcd_resolution_t* l_res = &p_tile->comps[p_pi->compno].resolutions[p_pi->resno];
860
861 OPJ_BYTE *l_header_data = 00;
862 OPJ_BYTE **l_header_data_start = 00;
863
864 OPJ_UINT32 l_present;
865
866 if (p_pi->layno == 0) {
867 l_band = l_res->bands;
868
869 /* reset tagtrees */
870 for (bandno = 0; bandno < l_res->numbands; ++bandno) {
871 opj_tcd_precinct_t *l_prc = &l_band->precincts[p_pi->precno];
872
873 if ( ! ((l_band->x1-l_band->x0 == 0)||(l_band->y1-l_band->y0 == 0)) ) {
874 opj_tgt_reset(l_prc->incltree);
875 opj_tgt_reset(l_prc->imsbtree);
876 l_cblk = l_prc->cblks.dec;
877
878 l_nb_code_blocks = l_prc->cw * l_prc->ch;
879 for (cblkno = 0; cblkno < l_nb_code_blocks; ++cblkno) {
880 l_cblk->numsegs = 0;
881 l_cblk->real_num_segs = 0;
882 ++l_cblk;
883 }
884 }
885
886 ++l_band;
887 }
888 }
889
890 /* SOP markers */
891
892 if (p_tcp->csty & J2K_CP_CSTY_SOP) {
893 if (p_max_length < 6) {
894 opj_event_msg(p_manager, EVT_WARNING, "Not enough space for expected SOP marker\n");
895 } else if ((*l_current_data) != 0xff || (*(l_current_data + 1) != 0x91)) {
896 opj_event_msg(p_manager, EVT_WARNING, "Expected SOP marker\n");
897 } else {
898 l_current_data += 6;
899 }
900
901 /** TODO : check the Nsop value */
902 }
903
904 /*
905 When the marker PPT/PPM is used the packet header are store in PPT/PPM marker
906 This part deal with this caracteristic
907 step 1: Read packet header in the saved structure
908 step 2: Return to codestream for decoding
909 */
910
911 l_bio = opj_bio_create();
912 if (! l_bio) {
913 return OPJ_FALSE;
914 }
915
916 if (l_cp->ppm == 1) { /* PPM */
917 l_header_data_start = &l_cp->ppm_data;
918 l_header_data = *l_header_data_start;
919 l_modified_length_ptr = &(l_cp->ppm_len);
920
921 }
922 else if (p_tcp->ppt == 1) { /* PPT */
923 l_header_data_start = &(p_tcp->ppt_data);
924 l_header_data = *l_header_data_start;
925 l_modified_length_ptr = &(p_tcp->ppt_len);
926 }
927 else { /* Normal Case */
928 l_header_data_start = &(l_current_data);
929 l_header_data = *l_header_data_start;
930 l_remaining_length = (OPJ_UINT32)(p_src_data+p_max_length-l_header_data);
931 l_modified_length_ptr = &(l_remaining_length);
932 }
933
934 opj_bio_init_dec(l_bio, l_header_data,*l_modified_length_ptr);
935
936 l_present = opj_bio_read(l_bio, 1);
937 JAS_FPRINTF(stderr, "present=%d \n", l_present );
938 if (!l_present) {
939 /* TODO MSD: no test to control the output of this function*/
940 opj_bio_inalign(l_bio);
941 l_header_data += opj_bio_numbytes(l_bio);
942 opj_bio_destroy(l_bio);
943
944 /* EPH markers */
945 if (p_tcp->csty & J2K_CP_CSTY_EPH) {
946 if ((*l_modified_length_ptr - (OPJ_UINT32)(l_header_data - *l_header_data_start)) < 2U) {
947 opj_event_msg(p_manager, EVT_WARNING, "Not enough space for expected EPH marker\n");
948 } else if ((*l_header_data) != 0xff || (*(l_header_data + 1) != 0x92)) {
949 opj_event_msg(p_manager, EVT_WARNING, "Expected EPH marker\n");
950 } else {
951 l_header_data += 2;
952 }
953 }
954
955 l_header_length = (OPJ_UINT32)(l_header_data - *l_header_data_start);
956 *l_modified_length_ptr -= l_header_length;
957 *l_header_data_start += l_header_length;
958
959 /* << INDEX */
960 /* End of packet header position. Currently only represents the distance to start of packet
961 Will be updated later by incrementing with packet start value */
962 if (p_pack_info) {
963 p_pack_info->end_ph_pos = (OPJ_INT32)(l_current_data - p_src_data);
964 }
965 /* INDEX >> */
966
967 * p_is_data_present = OPJ_FALSE;
968 *p_data_read = (OPJ_UINT32)(l_current_data - p_src_data);
969 return OPJ_TRUE;
970 }
971
972 l_band = l_res->bands;
973 for (bandno = 0; bandno < l_res->numbands; ++bandno) {
974 opj_tcd_precinct_t *l_prc = &(l_band->precincts[p_pi->precno]);
975
976 if ((l_band->x1-l_band->x0 == 0)||(l_band->y1-l_band->y0 == 0)) {
977 ++l_band;
978 continue;
979 }
980
981 l_nb_code_blocks = l_prc->cw * l_prc->ch;
982 l_cblk = l_prc->cblks.dec;
983 for (cblkno = 0; cblkno < l_nb_code_blocks; cblkno++) {
984 OPJ_UINT32 l_included,l_increment, l_segno;
985 OPJ_INT32 n;
986
987 /* if cblk not yet included before --> inclusion tagtree */
988 if (!l_cblk->numsegs) {
989 l_included = opj_tgt_decode(l_bio, l_prc->incltree, cblkno, (OPJ_INT32)(p_pi->layno + 1));
990 /* else one bit */
991 }
992 else {
993 l_included = opj_bio_read(l_bio, 1);
994 }
995
996 /* if cblk not included */
997 if (!l_included) {
998 l_cblk->numnewpasses = 0;
999 ++l_cblk;
1000 JAS_FPRINTF(stderr, "included=%d \n", l_included);
1001 continue;
1002 }
1003
1004 /* if cblk not yet included --> zero-bitplane tagtree */
1005 if (!l_cblk->numsegs) {
1006 OPJ_UINT32 i = 0;
1007
1008 while (!opj_tgt_decode(l_bio, l_prc->imsbtree, cblkno, (OPJ_INT32)i)) {
1009 ++i;
1010 }
1011
1012 l_cblk->numbps = (OPJ_UINT32)l_band->numbps + 1 - i;
1013 l_cblk->numlenbits = 3;
1014 }
1015
1016 /* number of coding passes */
1017 l_cblk->numnewpasses = opj_t2_getnumpasses(l_bio);
1018 l_increment = opj_t2_getcommacode(l_bio);
1019
1020 /* length indicator increment */
1021 l_cblk->numlenbits += l_increment;
1022 l_segno = 0;
1023
1024 if (!l_cblk->numsegs) {
1025 if (! opj_t2_init_seg(l_cblk, l_segno, p_tcp->tccps[p_pi->compno].cblksty, 1)) {
1026 opj_bio_destroy(l_bio);
1027 return OPJ_FALSE;
1028 }
1029 }
1030 else {
1031 l_segno = l_cblk->numsegs - 1;
1032 if (l_cblk->segs[l_segno].numpasses == l_cblk->segs[l_segno].maxpasses) {
1033 ++l_segno;
1034 if (! opj_t2_init_seg(l_cblk, l_segno, p_tcp->tccps[p_pi->compno].cblksty, 0)) {
1035 opj_bio_destroy(l_bio);
1036 return OPJ_FALSE;
1037 }
1038 }
1039 }
1040 n = (OPJ_INT32)l_cblk->numnewpasses;
1041
1042 do {
1043 l_cblk->segs[l_segno].numnewpasses = (OPJ_UINT32)opj_int_min((OPJ_INT32)(l_cblk->segs[l_segno].maxpasses - l_cblk->segs[l_segno].numpasses), n);
1044 l_cblk->segs[l_segno].newlen = opj_bio_read(l_bio, l_cblk->numlenbits + opj_uint_floorlog2(l_cblk->segs[l_segno].numnewpasses));
1045 JAS_FPRINTF(stderr, "included=%d numnewpasses=%d increment=%d len=%d \n", l_included, l_cblk->segs[l_segno].numnewpasses, l_increment, l_cblk->segs[l_segno].newlen );
1046
1047 n -= (OPJ_INT32)l_cblk->segs[l_segno].numnewpasses;
1048 if (n > 0) {
1049 ++l_segno;
1050
1051 if (! opj_t2_init_seg(l_cblk, l_segno, p_tcp->tccps[p_pi->compno].cblksty, 0)) {
1052 opj_bio_destroy(l_bio);
1053 return OPJ_FALSE;
1054 }
1055 }
1056 } while (n > 0);
1057
1058 ++l_cblk;
1059 }
1060
1061 ++l_band;
1062 }
1063
1064 if (!opj_bio_inalign(l_bio)) {
1065 opj_bio_destroy(l_bio);
1066 return OPJ_FALSE;
1067 }
1068
1069 l_header_data += opj_bio_numbytes(l_bio);
1070 opj_bio_destroy(l_bio);
1071
1072 /* EPH markers */
1073 if (p_tcp->csty & J2K_CP_CSTY_EPH) {
1074 if ((*l_modified_length_ptr - (OPJ_UINT32)(l_header_data - *l_header_data_start)) < 2U) {
1075 opj_event_msg(p_manager, EVT_WARNING, "Not enough space for expected EPH marker\n");
1076 } else if ((*l_header_data) != 0xff || (*(l_header_data + 1) != 0x92)) {
1077 opj_event_msg(p_manager, EVT_WARNING, "Expected EPH marker\n");
1078 } else {
1079 l_header_data += 2;
1080 }
1081 }
1082
1083 l_header_length = (OPJ_UINT32)(l_header_data - *l_header_data_start);
1084 JAS_FPRINTF( stderr, "hdrlen=%d \n", l_header_length );
1085 JAS_FPRINTF( stderr, "packet body\n");
1086 *l_modified_length_ptr -= l_header_length;
1087 *l_header_data_start += l_header_length;
1088
1089 /* << INDEX */
1090 /* End of packet header position. Currently only represents the distance to start of packet
1091 Will be updated later by incrementing with packet start value */
1092 if (p_pack_info) {
1093 p_pack_info->end_ph_pos = (OPJ_INT32)(l_current_data - p_src_data);
1094 }
1095 /* INDEX >> */
1096
1097 *p_is_data_present = OPJ_TRUE;
1098 *p_data_read = (OPJ_UINT32)(l_current_data - p_src_data);
1099
1100 return OPJ_TRUE;
1101 }
1102
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)1103 static OPJ_BOOL opj_t2_read_packet_data( opj_t2_t* p_t2,
1104 opj_tcd_tile_t *p_tile,
1105 opj_pi_iterator_t *p_pi,
1106 OPJ_BYTE *p_src_data,
1107 OPJ_UINT32 * p_data_read,
1108 OPJ_UINT32 p_max_length,
1109 opj_packet_info_t *pack_info,
1110 opj_event_mgr_t* p_manager)
1111 {
1112 OPJ_UINT32 bandno, cblkno;
1113 OPJ_UINT32 l_nb_code_blocks;
1114 OPJ_BYTE *l_current_data = p_src_data;
1115 opj_tcd_band_t *l_band = 00;
1116 opj_tcd_cblk_dec_t* l_cblk = 00;
1117 opj_tcd_resolution_t* l_res = &p_tile->comps[p_pi->compno].resolutions[p_pi->resno];
1118
1119 OPJ_ARG_NOT_USED(p_t2);
1120 OPJ_ARG_NOT_USED(pack_info);
1121
1122 l_band = l_res->bands;
1123 for (bandno = 0; bandno < l_res->numbands; ++bandno) {
1124 opj_tcd_precinct_t *l_prc = &l_band->precincts[p_pi->precno];
1125
1126 if ((l_band->x1-l_band->x0 == 0)||(l_band->y1-l_band->y0 == 0)) {
1127 ++l_band;
1128 continue;
1129 }
1130
1131 l_nb_code_blocks = l_prc->cw * l_prc->ch;
1132 l_cblk = l_prc->cblks.dec;
1133
1134 for (cblkno = 0; cblkno < l_nb_code_blocks; ++cblkno) {
1135 opj_tcd_seg_t *l_seg = 00;
1136
1137 if (!l_cblk->numnewpasses) {
1138 /* nothing to do */
1139 ++l_cblk;
1140 continue;
1141 }
1142
1143 if (!l_cblk->numsegs) {
1144 l_seg = l_cblk->segs;
1145 ++l_cblk->numsegs;
1146 l_cblk->data_current_size = 0;
1147 }
1148 else {
1149 l_seg = &l_cblk->segs[l_cblk->numsegs - 1];
1150
1151 if (l_seg->numpasses == l_seg->maxpasses) {
1152 ++l_seg;
1153 ++l_cblk->numsegs;
1154 }
1155 }
1156
1157 do {
1158 /* Check possible overflow (on l_current_data only, assumes input args already checked) then size */
1159 if ((((OPJ_SIZE_T)l_current_data + (OPJ_SIZE_T)l_seg->newlen) < (OPJ_SIZE_T)l_current_data) || (l_current_data + l_seg->newlen > p_src_data + p_max_length)) {
1160 opj_event_msg(p_manager, EVT_ERROR, "read: segment too long (%d) with max (%d) for codeblock %d (p=%d, b=%d, r=%d, c=%d)\n",
1161 l_seg->newlen, p_max_length, cblkno, p_pi->precno, bandno, p_pi->resno, p_pi->compno);
1162 return OPJ_FALSE;
1163 }
1164
1165 #ifdef USE_JPWL
1166 /* we need here a j2k handle to verify if making a check to
1167 the validity of cblocks parameters is selected from user (-W) */
1168
1169 /* let's check that we are not exceeding */
1170 if ((l_cblk->len + l_seg->newlen) > 8192) {
1171 opj_event_msg(p_manager, EVT_WARNING,
1172 "JPWL: segment too long (%d) for codeblock %d (p=%d, b=%d, r=%d, c=%d)\n",
1173 l_seg->newlen, cblkno, p_pi->precno, bandno, p_pi->resno, p_pi->compno);
1174 if (!JPWL_ASSUME) {
1175 opj_event_msg(p_manager, EVT_ERROR, "JPWL: giving up\n");
1176 return OPJ_FALSE;
1177 }
1178 l_seg->newlen = 8192 - l_cblk->len;
1179 opj_event_msg(p_manager, EVT_WARNING, " - truncating segment to %d\n", l_seg->newlen);
1180 break;
1181 };
1182
1183 #endif /* USE_JPWL */
1184 /* Check possible overflow on size */
1185 if ((l_cblk->data_current_size + l_seg->newlen) < l_cblk->data_current_size) {
1186 opj_event_msg(p_manager, EVT_ERROR, "read: segment too long (%d) with current size (%d > %d) for codeblock %d (p=%d, b=%d, r=%d, c=%d)\n",
1187 l_seg->newlen, l_cblk->data_current_size, 0xFFFFFFFF - l_seg->newlen, cblkno, p_pi->precno, bandno, p_pi->resno, p_pi->compno);
1188 return OPJ_FALSE;
1189 }
1190 /* Check if the cblk->data have allocated enough memory */
1191 if ((l_cblk->data_current_size + l_seg->newlen) > l_cblk->data_max_size) {
1192 OPJ_BYTE* new_cblk_data = (OPJ_BYTE*) opj_realloc(l_cblk->data, l_cblk->data_current_size + l_seg->newlen);
1193 if(! new_cblk_data) {
1194 opj_free(l_cblk->data);
1195 l_cblk->data = NULL;
1196 l_cblk->data_max_size = 0;
1197 /* opj_event_msg(p_manager, EVT_ERROR, "Not enough memory to realloc code block cata!\n"); */
1198 return OPJ_FALSE;
1199 }
1200 l_cblk->data_max_size = l_cblk->data_current_size + l_seg->newlen;
1201 l_cblk->data = new_cblk_data;
1202 }
1203
1204 memcpy(l_cblk->data + l_cblk->data_current_size, l_current_data, l_seg->newlen);
1205
1206 if (l_seg->numpasses == 0) {
1207 l_seg->data = &l_cblk->data;
1208 l_seg->dataindex = l_cblk->data_current_size;
1209 }
1210
1211 l_current_data += l_seg->newlen;
1212 l_seg->numpasses += l_seg->numnewpasses;
1213 l_cblk->numnewpasses -= l_seg->numnewpasses;
1214
1215 l_seg->real_num_passes = l_seg->numpasses;
1216 l_cblk->data_current_size += l_seg->newlen;
1217 l_seg->len += l_seg->newlen;
1218
1219 if (l_cblk->numnewpasses > 0) {
1220 ++l_seg;
1221 ++l_cblk->numsegs;
1222 }
1223 } while (l_cblk->numnewpasses > 0);
1224
1225 l_cblk->real_num_segs = l_cblk->numsegs;
1226 ++l_cblk;
1227 } /* next code_block */
1228
1229 ++l_band;
1230 }
1231
1232 *(p_data_read) = (OPJ_UINT32)(l_current_data - p_src_data);
1233
1234
1235 return OPJ_TRUE;
1236 }
1237
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)1238 static OPJ_BOOL opj_t2_skip_packet_data( opj_t2_t* p_t2,
1239 opj_tcd_tile_t *p_tile,
1240 opj_pi_iterator_t *p_pi,
1241 OPJ_UINT32 * p_data_read,
1242 OPJ_UINT32 p_max_length,
1243 opj_packet_info_t *pack_info,
1244 opj_event_mgr_t *p_manager)
1245 {
1246 OPJ_UINT32 bandno, cblkno;
1247 OPJ_UINT32 l_nb_code_blocks;
1248 opj_tcd_band_t *l_band = 00;
1249 opj_tcd_cblk_dec_t* l_cblk = 00;
1250 opj_tcd_resolution_t* l_res = &p_tile->comps[p_pi->compno].resolutions[p_pi->resno];
1251
1252 OPJ_ARG_NOT_USED(p_t2);
1253 OPJ_ARG_NOT_USED(pack_info);
1254
1255 *p_data_read = 0;
1256 l_band = l_res->bands;
1257
1258 for (bandno = 0; bandno < l_res->numbands; ++bandno) {
1259 opj_tcd_precinct_t *l_prc = &l_band->precincts[p_pi->precno];
1260
1261 if ((l_band->x1-l_band->x0 == 0)||(l_band->y1-l_band->y0 == 0)) {
1262 ++l_band;
1263 continue;
1264 }
1265
1266 l_nb_code_blocks = l_prc->cw * l_prc->ch;
1267 l_cblk = l_prc->cblks.dec;
1268
1269 for (cblkno = 0; cblkno < l_nb_code_blocks; ++cblkno) {
1270 opj_tcd_seg_t *l_seg = 00;
1271
1272 if (!l_cblk->numnewpasses) {
1273 /* nothing to do */
1274 ++l_cblk;
1275 continue;
1276 }
1277
1278 if (!l_cblk->numsegs) {
1279 l_seg = l_cblk->segs;
1280 ++l_cblk->numsegs;
1281 l_cblk->data_current_size = 0;
1282 }
1283 else {
1284 l_seg = &l_cblk->segs[l_cblk->numsegs - 1];
1285
1286 if (l_seg->numpasses == l_seg->maxpasses) {
1287 ++l_seg;
1288 ++l_cblk->numsegs;
1289 }
1290 }
1291
1292 do {
1293 /* Check possible overflow then size */
1294 if (((*p_data_read + l_seg->newlen) < (*p_data_read)) || ((*p_data_read + l_seg->newlen) > p_max_length)) {
1295 opj_event_msg(p_manager, EVT_ERROR, "skip: segment too long (%d) with max (%d) for codeblock %d (p=%d, b=%d, r=%d, c=%d)\n",
1296 l_seg->newlen, p_max_length, cblkno, p_pi->precno, bandno, p_pi->resno, p_pi->compno);
1297 return OPJ_FALSE;
1298 }
1299
1300 #ifdef USE_JPWL
1301 /* we need here a j2k handle to verify if making a check to
1302 the validity of cblocks parameters is selected from user (-W) */
1303
1304 /* let's check that we are not exceeding */
1305 if ((l_cblk->len + l_seg->newlen) > 8192) {
1306 opj_event_msg(p_manager, EVT_WARNING,
1307 "JPWL: segment too long (%d) for codeblock %d (p=%d, b=%d, r=%d, c=%d)\n",
1308 l_seg->newlen, cblkno, p_pi->precno, bandno, p_pi->resno, p_pi->compno);
1309 if (!JPWL_ASSUME) {
1310 opj_event_msg(p_manager, EVT_ERROR, "JPWL: giving up\n");
1311 return -999;
1312 }
1313 l_seg->newlen = 8192 - l_cblk->len;
1314 opj_event_msg(p_manager, EVT_WARNING, " - truncating segment to %d\n", l_seg->newlen);
1315 break;
1316 };
1317
1318 #endif /* USE_JPWL */
1319 JAS_FPRINTF(stderr, "p_data_read (%d) newlen (%d) \n", *p_data_read, l_seg->newlen );
1320 *(p_data_read) += l_seg->newlen;
1321
1322 l_seg->numpasses += l_seg->numnewpasses;
1323 l_cblk->numnewpasses -= l_seg->numnewpasses;
1324 if (l_cblk->numnewpasses > 0)
1325 {
1326 ++l_seg;
1327 ++l_cblk->numsegs;
1328 }
1329 } while (l_cblk->numnewpasses > 0);
1330
1331 ++l_cblk;
1332 }
1333
1334 ++l_band;
1335 }
1336
1337 return OPJ_TRUE;
1338 }
1339
1340
opj_t2_init_seg(opj_tcd_cblk_dec_t * cblk,OPJ_UINT32 index,OPJ_UINT32 cblksty,OPJ_UINT32 first)1341 OPJ_BOOL opj_t2_init_seg( opj_tcd_cblk_dec_t* cblk,
1342 OPJ_UINT32 index,
1343 OPJ_UINT32 cblksty,
1344 OPJ_UINT32 first)
1345 {
1346 opj_tcd_seg_t* seg = 00;
1347 OPJ_UINT32 l_nb_segs = index + 1;
1348
1349 if (l_nb_segs > cblk->m_current_max_segs) {
1350 opj_tcd_seg_t* new_segs;
1351 cblk->m_current_max_segs += OPJ_J2K_DEFAULT_NB_SEGS;
1352
1353 new_segs = (opj_tcd_seg_t*) opj_realloc(cblk->segs, cblk->m_current_max_segs * sizeof(opj_tcd_seg_t));
1354 if(! new_segs) {
1355 opj_free(cblk->segs);
1356 cblk->segs = NULL;
1357 cblk->m_current_max_segs = 0;
1358 /* opj_event_msg(p_manager, EVT_ERROR, "Not enough memory to initialize segment %d\n", l_nb_segs); */
1359 return OPJ_FALSE;
1360 }
1361 cblk->segs = new_segs;
1362 }
1363
1364 seg = &cblk->segs[index];
1365 memset(seg,0,sizeof(opj_tcd_seg_t));
1366
1367 if (cblksty & J2K_CCP_CBLKSTY_TERMALL) {
1368 seg->maxpasses = 1;
1369 }
1370 else if (cblksty & J2K_CCP_CBLKSTY_LAZY) {
1371 if (first) {
1372 seg->maxpasses = 10;
1373 } else {
1374 seg->maxpasses = (((seg - 1)->maxpasses == 1) || ((seg - 1)->maxpasses == 10)) ? 2 : 1;
1375 }
1376 } else {
1377 seg->maxpasses = 109;
1378 }
1379
1380 return OPJ_TRUE;
1381 }
1382