1 /*
2 * Copyright (c) 2002-2007, Communications and Remote Sensing Laboratory, Universite catholique de Louvain (UCL), Belgium
3 * Copyright (c) 2002-2007, Professor Benoit Macq
4 * Copyright (c) 2001-2003, David Janssens
5 * Copyright (c) 2002-2003, Yannick Verschueren
6 * Copyright (c) 2003-2007, Francois-Olivier Devaux and Antonin Descampe
7 * Copyright (c) 2005, Herve Drolon, FreeImage Team
8 * Copyright (c) 2008;2011-2012, Centre National d'Etudes Spatiales (CNES), France
9 * Copyright (c) 2012, CS Systemes d'Information, France
10 * All rights reserved.
11 *
12 * Redistribution and use in source and binary forms, with or without
13 * modification, are permitted provided that the following conditions
14 * are met:
15 * 1. Redistributions of source code must retain the above copyright
16 * notice, this list of conditions and the following disclaimer.
17 * 2. Redistributions in binary form must reproduce the above copyright
18 * notice, this list of conditions and the following disclaimer in the
19 * documentation and/or other materials provided with the distribution.
20 *
21 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS `AS IS'
22 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
23 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
24 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
25 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
26 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
27 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
28 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
29 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
30 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
31 * POSSIBILITY OF SUCH DAMAGE.
32 */
33
34 #include "opj_includes.h"
35
36 /** @defgroup T2 T2 - Implementation of a tier-2 coding */
37 /*@{*/
38
39 /** @name Local static functions */
40 /*@{*/
41
42 static void opj_t2_putcommacode(opj_bio_t *bio, OPJ_INT32 n);
43
44 static OPJ_UINT32 opj_t2_getcommacode(opj_bio_t *bio);
45 /**
46 Variable length code for signalling delta Zil (truncation point)
47 @param bio Bit Input/Output component
48 @param n delta Zil
49 */
50 static void opj_t2_putnumpasses(opj_bio_t *bio, OPJ_UINT32 n);
51 static OPJ_UINT32 opj_t2_getnumpasses(opj_bio_t *bio);
52
53 /**
54 Encode a packet of a tile to a destination buffer
55 @param tileno Number of the tile encoded
56 @param tile Tile for which to write the packets
57 @param tcp Tile coding parameters
58 @param pi Packet identity
59 @param dest Destination buffer
60 @param p_data_written FIXME DOC
61 @param len Length of the destination buffer
62 @param cstr_info Codestream information structure
63 @return
64 */
65 static OPJ_BOOL opj_t2_encode_packet( OPJ_UINT32 tileno,
66 opj_tcd_tile_t *tile,
67 opj_tcp_t *tcp,
68 opj_pi_iterator_t *pi,
69 OPJ_BYTE *dest,
70 OPJ_UINT32 * p_data_written,
71 OPJ_UINT32 len,
72 opj_codestream_info_t *cstr_info);
73
74 /**
75 Decode a packet of a tile from a source buffer
76 @param t2 T2 handle
77 @param tile Tile for which to write the packets
78 @param tcp Tile coding parameters
79 @param pi Packet identity
80 @param src Source buffer
81 @param data_read FIXME DOC
82 @param max_length FIXME DOC
83 @param pack_info Packet information
84
85 @return FIXME DOC
86 */
87 static OPJ_BOOL opj_t2_decode_packet( opj_t2_t* t2,
88 opj_tcd_tile_t *tile,
89 opj_tcp_t *tcp,
90 opj_pi_iterator_t *pi,
91 OPJ_BYTE *src,
92 OPJ_UINT32 * data_read,
93 OPJ_UINT32 max_length,
94 opj_packet_info_t *pack_info);
95
96 static OPJ_BOOL opj_t2_skip_packet( opj_t2_t* p_t2,
97 opj_tcd_tile_t *p_tile,
98 opj_tcp_t *p_tcp,
99 opj_pi_iterator_t *p_pi,
100 OPJ_BYTE *p_src,
101 OPJ_UINT32 * p_data_read,
102 OPJ_UINT32 p_max_length,
103 opj_packet_info_t *p_pack_info);
104
105 static OPJ_BOOL opj_t2_read_packet_header( opj_t2_t* p_t2,
106 opj_tcd_tile_t *p_tile,
107 opj_tcp_t *p_tcp,
108 opj_pi_iterator_t *p_pi,
109 OPJ_BOOL * p_is_data_present,
110 OPJ_BYTE *p_src_data,
111 OPJ_UINT32 * p_data_read,
112 OPJ_UINT32 p_max_length,
113 opj_packet_info_t *p_pack_info);
114
115 static OPJ_BOOL opj_t2_read_packet_data(opj_t2_t* p_t2,
116 opj_tcd_tile_t *p_tile,
117 opj_pi_iterator_t *p_pi,
118 OPJ_BYTE *p_src_data,
119 OPJ_UINT32 * p_data_read,
120 OPJ_UINT32 p_max_length,
121 opj_packet_info_t *pack_info);
122
123 static OPJ_BOOL opj_t2_skip_packet_data(opj_t2_t* p_t2,
124 opj_tcd_tile_t *p_tile,
125 opj_pi_iterator_t *p_pi,
126 OPJ_UINT32 * p_data_read,
127 OPJ_UINT32 p_max_length,
128 opj_packet_info_t *pack_info);
129
130 /**
131 @param cblk
132 @param index
133 @param cblksty
134 @param first
135 */
136 static OPJ_BOOL opj_t2_init_seg( opj_tcd_cblk_dec_t* cblk,
137 OPJ_UINT32 index,
138 OPJ_UINT32 cblksty,
139 OPJ_UINT32 first);
140
141 /*@}*/
142
143 /*@}*/
144
145 /* ----------------------------------------------------------------------- */
146
147 /* #define RESTART 0x04 */
opj_t2_putcommacode(opj_bio_t * bio,OPJ_INT32 n)148 static void opj_t2_putcommacode(opj_bio_t *bio, OPJ_INT32 n) {
149 while (--n >= 0) {
150 opj_bio_write(bio, 1, 1);
151 }
152 opj_bio_write(bio, 0, 1);
153 }
154
opj_t2_getcommacode(opj_bio_t * bio)155 OPJ_UINT32 opj_t2_getcommacode(opj_bio_t *bio)
156 {
157 OPJ_UINT32 n = 0;
158 while (opj_bio_read(bio, 1)) {
159 ++n;
160 }
161 return n;
162 }
163
opj_t2_putnumpasses(opj_bio_t * bio,OPJ_UINT32 n)164 void opj_t2_putnumpasses(opj_bio_t *bio, OPJ_UINT32 n) {
165 if (n == 1) {
166 opj_bio_write(bio, 0, 1);
167 } else if (n == 2) {
168 opj_bio_write(bio, 2, 2);
169 } else if (n <= 5) {
170 opj_bio_write(bio, 0xc | (n - 3), 4);
171 } else if (n <= 36) {
172 opj_bio_write(bio, 0x1e0 | (n - 6), 9);
173 } else if (n <= 164) {
174 opj_bio_write(bio, 0xff80 | (n - 37), 16);
175 }
176 }
177
opj_t2_getnumpasses(opj_bio_t * bio)178 OPJ_UINT32 opj_t2_getnumpasses(opj_bio_t *bio) {
179 OPJ_UINT32 n;
180 if (!opj_bio_read(bio, 1))
181 return 1;
182 if (!opj_bio_read(bio, 1))
183 return 2;
184 if ((n = opj_bio_read(bio, 2)) != 3)
185 return (3 + n);
186 if ((n = opj_bio_read(bio, 5)) != 31)
187 return (6 + n);
188 return (37 + opj_bio_read(bio, 7));
189 }
190
191 /* ----------------------------------------------------------------------- */
192
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)193 OPJ_BOOL opj_t2_encode_packets( opj_t2_t* p_t2,
194 OPJ_UINT32 p_tile_no,
195 opj_tcd_tile_t *p_tile,
196 OPJ_UINT32 p_maxlayers,
197 OPJ_BYTE *p_dest,
198 OPJ_UINT32 * p_data_written,
199 OPJ_UINT32 p_max_len,
200 opj_codestream_info_t *cstr_info,
201 OPJ_UINT32 p_tp_num,
202 OPJ_INT32 p_tp_pos,
203 OPJ_UINT32 p_pino,
204 J2K_T2_MODE p_t2_mode)
205 {
206 OPJ_BYTE *l_current_data = p_dest;
207 OPJ_UINT32 l_nb_bytes = 0;
208 OPJ_UINT32 compno;
209 OPJ_UINT32 poc;
210 opj_pi_iterator_t *l_pi = 00;
211 opj_pi_iterator_t *l_current_pi = 00;
212 opj_image_t *l_image = p_t2->image;
213 opj_cp_t *l_cp = p_t2->cp;
214 opj_tcp_t *l_tcp = &l_cp->tcps[p_tile_no];
215 OPJ_UINT32 pocno = l_cp->m_specific_param.m_enc.m_cinema == OPJ_CINEMA4K_24? 2: 1;
216 OPJ_UINT32 l_max_comp = l_cp->m_specific_param.m_enc.m_max_comp_size > 0 ? l_image->numcomps : 1;
217 OPJ_UINT32 l_nb_pocs = l_tcp->numpocs + 1;
218
219 l_pi = opj_pi_initialise_encode(l_image, l_cp, p_tile_no, p_t2_mode);
220 if (!l_pi) {
221 return OPJ_FALSE;
222 }
223
224 * p_data_written = 0;
225
226 if (p_t2_mode == THRESH_CALC ){ /* Calculating threshold */
227 l_current_pi = l_pi;
228
229 for (compno = 0; compno < l_max_comp; ++compno) {
230 OPJ_UINT32 l_comp_len = 0;
231 l_current_pi = l_pi;
232
233 for (poc = 0; poc < pocno ; ++poc) {
234 OPJ_UINT32 l_tp_num = compno;
235
236 /* TODO MSD : check why this function cannot fail (cf. v1) */
237 opj_pi_create_encode(l_pi, l_cp,p_tile_no,poc,l_tp_num,p_tp_pos,p_t2_mode);
238
239 while (opj_pi_next(l_current_pi)) {
240 if (l_current_pi->layno < p_maxlayers) {
241 l_nb_bytes = 0;
242
243 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)) {
244 opj_pi_destroy(l_pi, l_nb_pocs);
245 return OPJ_FALSE;
246 }
247
248 l_comp_len += l_nb_bytes;
249 l_current_data += l_nb_bytes;
250 p_max_len -= l_nb_bytes;
251
252 * p_data_written += l_nb_bytes;
253 }
254 }
255
256 if (l_cp->m_specific_param.m_enc.m_max_comp_size) {
257 if (l_comp_len > l_cp->m_specific_param.m_enc.m_max_comp_size) {
258 opj_pi_destroy(l_pi, l_nb_pocs);
259 return OPJ_FALSE;
260 }
261 }
262
263 ++l_current_pi;
264 }
265 }
266 }
267 else { /* t2_mode == FINAL_PASS */
268 opj_pi_create_encode(l_pi, l_cp,p_tile_no,p_pino,p_tp_num,p_tp_pos,p_t2_mode);
269
270 l_current_pi = &l_pi[p_pino];
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, l_current_data, &l_nb_bytes, p_max_len, cstr_info)) {
277 opj_pi_destroy(l_pi, l_nb_pocs);
278 return OPJ_FALSE;
279 }
280
281 l_current_data += l_nb_bytes;
282 p_max_len -= l_nb_bytes;
283
284 * p_data_written += l_nb_bytes;
285
286 /* INDEX >> */
287 if(cstr_info) {
288 if(cstr_info->index_write) {
289 opj_tile_info_t *info_TL = &cstr_info->tile[p_tile_no];
290 opj_packet_info_t *info_PK = &info_TL->packet[cstr_info->packno];
291 if (!cstr_info->packno) {
292 info_PK->start_pos = info_TL->end_header + 1;
293 } else {
294 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;
295 }
296 info_PK->end_pos = info_PK->start_pos + l_nb_bytes - 1;
297 info_PK->end_ph_pos += info_PK->start_pos - 1; /* End of packet header which now only represents the distance
298 to start of packet is incremented by value of start of packet*/
299 }
300
301 cstr_info->packno++;
302 }
303 /* << INDEX */
304 ++p_tile->packno;
305 }
306 }
307 }
308
309 opj_pi_destroy(l_pi, l_nb_pocs);
310
311 return OPJ_TRUE;
312 }
313
314 /* see issue 80 */
315 #if 0
316 #define JAS_FPRINTF fprintf
317 #else
318 /* issue 290 */
opj_null_jas_fprintf(FILE * file,const char * format,...)319 static void opj_null_jas_fprintf(FILE* file, const char * format, ...)
320 {
321 (void)file;
322 (void)format;
323 }
324 #define JAS_FPRINTF opj_null_jas_fprintf
325 #endif
326
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)327 OPJ_BOOL opj_t2_decode_packets( opj_t2_t *p_t2,
328 OPJ_UINT32 p_tile_no,
329 opj_tcd_tile_t *p_tile,
330 OPJ_BYTE *p_src,
331 OPJ_UINT32 * p_data_read,
332 OPJ_UINT32 p_max_len,
333 opj_codestream_index_t *p_cstr_index)
334 {
335 OPJ_BYTE *l_current_data = p_src;
336 opj_pi_iterator_t *l_pi = 00;
337 OPJ_UINT32 pino;
338 opj_image_t *l_image = p_t2->image;
339 opj_cp_t *l_cp = p_t2->cp;
340 opj_tcp_t *l_tcp = &(p_t2->cp->tcps[p_tile_no]);
341 OPJ_UINT32 l_nb_bytes_read;
342 OPJ_UINT32 l_nb_pocs = l_tcp->numpocs + 1;
343 opj_pi_iterator_t *l_current_pi = 00;
344 #ifdef TODO_MSD
345 OPJ_UINT32 curtp = 0;
346 OPJ_UINT32 tp_start_packno;
347 #endif
348 opj_packet_info_t *l_pack_info = 00;
349 opj_image_comp_t* l_img_comp = 00;
350
351 OPJ_ARG_NOT_USED(p_cstr_index);
352
353 #ifdef TODO_MSD
354 if (p_cstr_index) {
355 l_pack_info = p_cstr_index->tile_index[p_tile_no].packet;
356 }
357 #endif
358
359 /* create a packet iterator */
360 l_pi = opj_pi_create_decode(l_image, l_cp, p_tile_no);
361 if (!l_pi) {
362 return OPJ_FALSE;
363 }
364
365
366 l_current_pi = l_pi;
367
368 for (pino = 0; pino <= l_tcp->numpocs; ++pino) {
369
370 /* if the resolution needed is too low, one dim of the tilec could be equal to zero
371 * and no packets are used to decode this resolution and
372 * l_current_pi->resno is always >= p_tile->comps[l_current_pi->compno].minimum_num_resolutions
373 * and no l_img_comp->resno_decoded are computed
374 */
375 OPJ_BOOL* first_pass_failed = (OPJ_BOOL*)opj_malloc(l_image->numcomps * sizeof(OPJ_BOOL));
376 if (!first_pass_failed)
377 {
378 opj_pi_destroy(l_pi,l_nb_pocs);
379 return OPJ_FALSE;
380 }
381 memset(first_pass_failed, OPJ_TRUE, l_image->numcomps * sizeof(OPJ_BOOL));
382
383 while (opj_pi_next(l_current_pi)) {
384 JAS_FPRINTF( stderr, "packet offset=00000166 prg=%d cmptno=%02d rlvlno=%02d prcno=%03d lyrno=%02d\n\n",
385 l_current_pi->poc.prg1, l_current_pi->compno, l_current_pi->resno, l_current_pi->precno, l_current_pi->layno );
386
387 if (l_tcp->num_layers_to_decode > l_current_pi->layno
388 && l_current_pi->resno < p_tile->comps[l_current_pi->compno].minimum_num_resolutions) {
389 l_nb_bytes_read = 0;
390
391 first_pass_failed[l_current_pi->compno] = OPJ_FALSE;
392
393 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)) {
394 opj_pi_destroy(l_pi,l_nb_pocs);
395 opj_free(first_pass_failed);
396 return OPJ_FALSE;
397 }
398
399 l_img_comp = &(l_image->comps[l_current_pi->compno]);
400 l_img_comp->resno_decoded = opj_uint_max(l_current_pi->resno, l_img_comp->resno_decoded);
401 }
402 else {
403 l_nb_bytes_read = 0;
404 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)) {
405 opj_pi_destroy(l_pi,l_nb_pocs);
406 opj_free(first_pass_failed);
407 return OPJ_FALSE;
408 }
409 }
410
411 if (first_pass_failed[l_current_pi->compno]) {
412 l_img_comp = &(l_image->comps[l_current_pi->compno]);
413 if (l_img_comp->resno_decoded == 0)
414 l_img_comp->resno_decoded = p_tile->comps[l_current_pi->compno].minimum_num_resolutions - 1;
415 }
416
417 l_current_data += l_nb_bytes_read;
418 p_max_len -= l_nb_bytes_read;
419
420 /* INDEX >> */
421 #ifdef TODO_MSD
422 if(p_cstr_info) {
423 opj_tile_info_v2_t *info_TL = &p_cstr_info->tile[p_tile_no];
424 opj_packet_info_t *info_PK = &info_TL->packet[p_cstr_info->packno];
425 tp_start_packno = 0;
426 if (!p_cstr_info->packno) {
427 info_PK->start_pos = info_TL->end_header + 1;
428 } 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 */
429 info_TL->tp[curtp].tp_numpacks = p_cstr_info->packno - tp_start_packno; /* Number of packets in previous tile-part */
430 tp_start_packno = p_cstr_info->packno;
431 curtp++;
432 info_PK->start_pos = p_cstr_info->tile[p_tile_no].tp[curtp].tp_end_header+1;
433 } else {
434 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;
435 }
436 info_PK->end_pos = info_PK->start_pos + l_nb_bytes_read - 1;
437 info_PK->end_ph_pos += info_PK->start_pos - 1; /* End of packet header which now only represents the distance */
438 ++p_cstr_info->packno;
439 }
440 #endif
441 /* << INDEX */
442 }
443 ++l_current_pi;
444
445 opj_free(first_pass_failed);
446 }
447 /* INDEX >> */
448 #ifdef TODO_MSD
449 if
450 (p_cstr_info) {
451 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 */
452 }
453 #endif
454 /* << INDEX */
455
456 /* don't forget to release pi */
457 opj_pi_destroy(l_pi,l_nb_pocs);
458 *p_data_read = (OPJ_UINT32)(l_current_data - p_src);
459 return OPJ_TRUE;
460 }
461
462 /* ----------------------------------------------------------------------- */
463
464 /**
465 * Creates a Tier 2 handle
466 *
467 * @param p_image Source or destination image
468 * @param p_cp Image coding parameters.
469 * @return a new T2 handle if successful, NULL otherwise.
470 */
opj_t2_create(opj_image_t * p_image,opj_cp_t * p_cp)471 opj_t2_t* opj_t2_create(opj_image_t *p_image, opj_cp_t *p_cp)
472 {
473 /* create the t2 structure */
474 opj_t2_t *l_t2 = (opj_t2_t*)opj_malloc(sizeof(opj_t2_t));
475 if (!l_t2) {
476 return NULL;
477 }
478 memset(l_t2,0,sizeof(opj_t2_t));
479
480 l_t2->image = p_image;
481 l_t2->cp = p_cp;
482
483 return l_t2;
484 }
485
opj_t2_destroy(opj_t2_t * t2)486 void opj_t2_destroy(opj_t2_t *t2) {
487 if(t2) {
488 opj_free(t2);
489 }
490 }
491
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)492 OPJ_BOOL opj_t2_decode_packet( opj_t2_t* p_t2,
493 opj_tcd_tile_t *p_tile,
494 opj_tcp_t *p_tcp,
495 opj_pi_iterator_t *p_pi,
496 OPJ_BYTE *p_src,
497 OPJ_UINT32 * p_data_read,
498 OPJ_UINT32 p_max_length,
499 opj_packet_info_t *p_pack_info)
500 {
501 OPJ_BOOL l_read_data;
502 OPJ_UINT32 l_nb_bytes_read = 0;
503 OPJ_UINT32 l_nb_total_bytes_read = 0;
504
505 *p_data_read = 0;
506
507 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)) {
508 return OPJ_FALSE;
509 }
510
511 p_src += l_nb_bytes_read;
512 l_nb_total_bytes_read += l_nb_bytes_read;
513 p_max_length -= l_nb_bytes_read;
514
515 /* we should read data for the packet */
516 if (l_read_data) {
517 l_nb_bytes_read = 0;
518
519 if (! opj_t2_read_packet_data(p_t2,p_tile,p_pi,p_src,&l_nb_bytes_read,p_max_length,p_pack_info)) {
520 return OPJ_FALSE;
521 }
522
523 l_nb_total_bytes_read += l_nb_bytes_read;
524 }
525
526 *p_data_read = l_nb_total_bytes_read;
527
528 return OPJ_TRUE;
529 }
530
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)531 OPJ_BOOL opj_t2_encode_packet( OPJ_UINT32 tileno,
532 opj_tcd_tile_t * tile,
533 opj_tcp_t * tcp,
534 opj_pi_iterator_t *pi,
535 OPJ_BYTE *dest,
536 OPJ_UINT32 * p_data_written,
537 OPJ_UINT32 length,
538 opj_codestream_info_t *cstr_info)
539 {
540 OPJ_UINT32 bandno, cblkno;
541 OPJ_BYTE* c = dest;
542 OPJ_UINT32 l_nb_bytes;
543 OPJ_UINT32 compno = pi->compno; /* component value */
544 OPJ_UINT32 resno = pi->resno; /* resolution level value */
545 OPJ_UINT32 precno = pi->precno; /* precinct value */
546 OPJ_UINT32 layno = pi->layno; /* quality layer value */
547 OPJ_UINT32 l_nb_blocks;
548 opj_tcd_band_t *band = 00;
549 opj_tcd_cblk_enc_t* cblk = 00;
550 opj_tcd_pass_t *pass = 00;
551
552 opj_tcd_tilecomp_t *tilec = &tile->comps[compno];
553 opj_tcd_resolution_t *res = &tilec->resolutions[resno];
554
555 opj_bio_t *bio = 00; /* BIO component */
556
557 /* <SOP 0xff91> */
558 if (tcp->csty & J2K_CP_CSTY_SOP) {
559 c[0] = 255;
560 c[1] = 145;
561 c[2] = 0;
562 c[3] = 4;
563 #if 0
564 c[4] = (tile->packno % 65536) / 256;
565 c[5] = (tile->packno % 65536) % 256;
566 #else
567 c[4] = (tile->packno >> 8) & 0xff; /* packno is uint32_t */
568 c[5] = tile->packno & 0xff;
569 #endif
570 c += 6;
571 length -= 6;
572 }
573 /* </SOP> */
574
575 if (!layno) {
576 band = res->bands;
577
578 for(bandno = 0; bandno < res->numbands; ++bandno) {
579 opj_tcd_precinct_t *prc = &band->precincts[precno];
580
581 opj_tgt_reset(prc->incltree);
582 opj_tgt_reset(prc->imsbtree);
583
584 l_nb_blocks = prc->cw * prc->ch;
585 for (cblkno = 0; cblkno < l_nb_blocks; ++cblkno) {
586 cblk = &prc->cblks.enc[cblkno];
587
588 cblk->numpasses = 0;
589 opj_tgt_setvalue(prc->imsbtree, cblkno, band->numbps - (OPJ_INT32)cblk->numbps);
590 }
591 ++band;
592 }
593 }
594
595 bio = opj_bio_create();
596 opj_bio_init_enc(bio, c, length);
597 opj_bio_write(bio, 1, 1); /* Empty header bit */
598
599 /* Writing Packet header */
600 band = res->bands;
601 for (bandno = 0; bandno < res->numbands; ++bandno) {
602 opj_tcd_precinct_t *prc = &band->precincts[precno];
603
604 l_nb_blocks = prc->cw * prc->ch;
605 cblk = prc->cblks.enc;
606
607 for (cblkno = 0; cblkno < l_nb_blocks; ++cblkno) {
608 opj_tcd_layer_t *layer = &cblk->layers[layno];
609
610 if (!cblk->numpasses && layer->numpasses) {
611 opj_tgt_setvalue(prc->incltree, cblkno, (OPJ_INT32)layno);
612 }
613
614 ++cblk;
615 }
616
617 cblk = prc->cblks.enc;
618 for (cblkno = 0; cblkno < l_nb_blocks; cblkno++) {
619 opj_tcd_layer_t *layer = &cblk->layers[layno];
620 OPJ_UINT32 increment = 0;
621 OPJ_UINT32 nump = 0;
622 OPJ_UINT32 len = 0, passno;
623 OPJ_UINT32 l_nb_passes;
624
625 /* cblk inclusion bits */
626 if (!cblk->numpasses) {
627 opj_tgt_encode(bio, prc->incltree, cblkno, (OPJ_INT32)(layno + 1));
628 } else {
629 opj_bio_write(bio, layer->numpasses != 0, 1);
630 }
631
632 /* if cblk not included, go to the next cblk */
633 if (!layer->numpasses) {
634 ++cblk;
635 continue;
636 }
637
638 /* if first instance of cblk --> zero bit-planes information */
639 if (!cblk->numpasses) {
640 cblk->numlenbits = 3;
641 opj_tgt_encode(bio, prc->imsbtree, cblkno, 999);
642 }
643
644 /* number of coding passes included */
645 opj_t2_putnumpasses(bio, layer->numpasses);
646 l_nb_passes = cblk->numpasses + layer->numpasses;
647 pass = cblk->passes + cblk->numpasses;
648
649 /* computation of the increase of the length indicator and insertion in the header */
650 for (passno = cblk->numpasses; passno < l_nb_passes; ++passno) {
651 ++nump;
652 len += pass->len;
653
654 if (pass->term || passno == (cblk->numpasses + layer->numpasses) - 1) {
655 increment = (OPJ_UINT32)opj_int_max((OPJ_INT32)increment, opj_int_floorlog2((OPJ_INT32)len) + 1
656 - ((OPJ_INT32)cblk->numlenbits + opj_int_floorlog2((OPJ_INT32)nump)));
657 len = 0;
658 nump = 0;
659 }
660
661 ++pass;
662 }
663 opj_t2_putcommacode(bio, (OPJ_INT32)increment);
664
665 /* computation of the new Length indicator */
666 cblk->numlenbits += increment;
667
668 pass = cblk->passes + cblk->numpasses;
669 /* insertion of the codeword segment length */
670 for (passno = cblk->numpasses; passno < l_nb_passes; ++passno) {
671 nump++;
672 len += pass->len;
673
674 if (pass->term || passno == (cblk->numpasses + layer->numpasses) - 1) {
675 opj_bio_write(bio, (OPJ_UINT32)len, cblk->numlenbits + (OPJ_UINT32)opj_int_floorlog2((OPJ_INT32)nump));
676 len = 0;
677 nump = 0;
678 }
679 ++pass;
680 }
681
682 ++cblk;
683 }
684
685 ++band;
686 }
687
688 if (!opj_bio_flush(bio)) {
689 opj_bio_destroy(bio);
690 return OPJ_FALSE; /* modified to eliminate longjmp !! */
691 }
692
693 l_nb_bytes = (OPJ_UINT32)opj_bio_numbytes(bio);
694 c += l_nb_bytes;
695 length -= l_nb_bytes;
696
697 opj_bio_destroy(bio);
698
699 /* <EPH 0xff92> */
700 if (tcp->csty & J2K_CP_CSTY_EPH) {
701 c[0] = 255;
702 c[1] = 146;
703 c += 2;
704 length -= 2;
705 }
706 /* </EPH> */
707
708 /* << INDEX */
709 /* End of packet header position. Currently only represents the distance to start of packet
710 Will be updated later by incrementing with packet start value*/
711 if(cstr_info && cstr_info->index_write) {
712 opj_packet_info_t *info_PK = &cstr_info->tile[tileno].packet[cstr_info->packno];
713 info_PK->end_ph_pos = (OPJ_INT32)(c - dest);
714 }
715 /* INDEX >> */
716
717 /* Writing the packet body */
718 band = res->bands;
719 for (bandno = 0; bandno < res->numbands; bandno++) {
720 opj_tcd_precinct_t *prc = &band->precincts[precno];
721
722 l_nb_blocks = prc->cw * prc->ch;
723 cblk = prc->cblks.enc;
724
725 for (cblkno = 0; cblkno < l_nb_blocks; ++cblkno) {
726 opj_tcd_layer_t *layer = &cblk->layers[layno];
727
728 if (!layer->numpasses) {
729 ++cblk;
730 continue;
731 }
732
733 if (layer->len > length) {
734 return OPJ_FALSE;
735 }
736
737 memcpy(c, layer->data, layer->len);
738 cblk->numpasses += layer->numpasses;
739 c += layer->len;
740 length -= layer->len;
741
742 /* << INDEX */
743 if(cstr_info && cstr_info->index_write) {
744 opj_packet_info_t *info_PK = &cstr_info->tile[tileno].packet[cstr_info->packno];
745 info_PK->disto += layer->disto;
746 if (cstr_info->D_max < info_PK->disto) {
747 cstr_info->D_max = info_PK->disto;
748 }
749 }
750
751 ++cblk;
752 /* INDEX >> */
753 }
754 ++band;
755 }
756
757 assert( c >= dest );
758 * p_data_written += (OPJ_UINT32)(c - dest);
759
760 return OPJ_TRUE;
761 }
762
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)763 static OPJ_BOOL opj_t2_skip_packet( opj_t2_t* p_t2,
764 opj_tcd_tile_t *p_tile,
765 opj_tcp_t *p_tcp,
766 opj_pi_iterator_t *p_pi,
767 OPJ_BYTE *p_src,
768 OPJ_UINT32 * p_data_read,
769 OPJ_UINT32 p_max_length,
770 opj_packet_info_t *p_pack_info)
771 {
772 OPJ_BOOL l_read_data;
773 OPJ_UINT32 l_nb_bytes_read = 0;
774 OPJ_UINT32 l_nb_total_bytes_read = 0;
775
776 *p_data_read = 0;
777
778 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)) {
779 return OPJ_FALSE;
780 }
781
782 p_src += l_nb_bytes_read;
783 l_nb_total_bytes_read += l_nb_bytes_read;
784 p_max_length -= l_nb_bytes_read;
785
786 /* we should read data for the packet */
787 if (l_read_data) {
788 l_nb_bytes_read = 0;
789
790 if (! opj_t2_skip_packet_data(p_t2,p_tile,p_pi,&l_nb_bytes_read,p_max_length,p_pack_info)) {
791 return OPJ_FALSE;
792 }
793
794 l_nb_total_bytes_read += l_nb_bytes_read;
795 }
796 *p_data_read = l_nb_total_bytes_read;
797
798 return OPJ_TRUE;
799 }
800
801
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)802 OPJ_BOOL opj_t2_read_packet_header( opj_t2_t* p_t2,
803 opj_tcd_tile_t *p_tile,
804 opj_tcp_t *p_tcp,
805 opj_pi_iterator_t *p_pi,
806 OPJ_BOOL * p_is_data_present,
807 OPJ_BYTE *p_src_data,
808 OPJ_UINT32 * p_data_read,
809 OPJ_UINT32 p_max_length,
810 opj_packet_info_t *p_pack_info)
811
812 {
813 /* loop */
814 OPJ_UINT32 bandno, cblkno;
815 OPJ_UINT32 l_nb_code_blocks;
816 OPJ_UINT32 l_remaining_length;
817 OPJ_UINT32 l_header_length;
818 OPJ_UINT32 * l_modified_length_ptr = 00;
819 OPJ_BYTE *l_current_data = p_src_data;
820 opj_cp_t *l_cp = p_t2->cp;
821 opj_bio_t *l_bio = 00; /* BIO component */
822 opj_tcd_band_t *l_band = 00;
823 opj_tcd_cblk_dec_t* l_cblk = 00;
824 opj_tcd_resolution_t* l_res = &p_tile->comps[p_pi->compno].resolutions[p_pi->resno];
825
826 OPJ_BYTE *l_header_data = 00;
827 OPJ_BYTE **l_header_data_start = 00;
828
829 OPJ_UINT32 l_present;
830
831 if (p_pi->layno == 0) {
832 l_band = l_res->bands;
833
834 /* reset tagtrees */
835 for (bandno = 0; bandno < l_res->numbands; ++bandno) {
836 opj_tcd_precinct_t *l_prc = &l_band->precincts[p_pi->precno];
837
838 if ( ! ((l_band->x1-l_band->x0 == 0)||(l_band->y1-l_band->y0 == 0)) ) {
839 opj_tgt_reset(l_prc->incltree);
840 opj_tgt_reset(l_prc->imsbtree);
841 l_cblk = l_prc->cblks.dec;
842
843 l_nb_code_blocks = l_prc->cw * l_prc->ch;
844 for (cblkno = 0; cblkno < l_nb_code_blocks; ++cblkno) {
845 l_cblk->numsegs = 0;
846 l_cblk->real_num_segs = 0;
847 ++l_cblk;
848 }
849 }
850
851 ++l_band;
852 }
853 }
854
855 /* SOP markers */
856
857 if (p_tcp->csty & J2K_CP_CSTY_SOP) {
858 if ((*l_current_data) != 0xff || (*(l_current_data + 1) != 0x91)) {
859 /* TODO opj_event_msg(t2->cinfo->event_mgr, EVT_WARNING, "Expected SOP marker\n"); */
860 fprintf(stderr, "Error : expected SOP marker\n");
861 } else {
862 l_current_data += 6;
863 }
864
865 /** TODO : check the Nsop value */
866 }
867
868 /*
869 When the marker PPT/PPM is used the packet header are store in PPT/PPM marker
870 This part deal with this caracteristic
871 step 1: Read packet header in the saved structure
872 step 2: Return to codestream for decoding
873 */
874
875 l_bio = opj_bio_create();
876 if (! l_bio) {
877 return OPJ_FALSE;
878 }
879
880 if (l_cp->ppm == 1) { /* PPM */
881 l_header_data_start = &l_cp->ppm_data;
882 l_header_data = *l_header_data_start;
883 l_modified_length_ptr = &(l_cp->ppm_len);
884
885 }
886 else if (p_tcp->ppt == 1) { /* PPT */
887 l_header_data_start = &(p_tcp->ppt_data);
888 l_header_data = *l_header_data_start;
889 l_modified_length_ptr = &(p_tcp->ppt_len);
890 }
891 else { /* Normal Case */
892 l_header_data_start = &(l_current_data);
893 l_header_data = *l_header_data_start;
894 l_remaining_length = (OPJ_UINT32)(p_src_data+p_max_length-l_header_data);
895 l_modified_length_ptr = &(l_remaining_length);
896 }
897
898 opj_bio_init_dec(l_bio, l_header_data,*l_modified_length_ptr);
899
900 l_present = opj_bio_read(l_bio, 1);
901 JAS_FPRINTF(stderr, "present=%d \n", l_present );
902 if (!l_present) {
903 /* TODO MSD: no test to control the output of this function*/
904 opj_bio_inalign(l_bio);
905 l_header_data += opj_bio_numbytes(l_bio);
906 opj_bio_destroy(l_bio);
907
908 /* EPH markers */
909 if (p_tcp->csty & J2K_CP_CSTY_EPH) {
910 if (p_max_length < 2) {
911 fprintf(stderr, "Not enough space for expected EPH marker\n");
912 } else if ((*l_header_data) != 0xff || (*(l_header_data + 1) != 0x92)) {
913 fprintf(stderr, "Error : expected EPH marker\n");
914 } else {
915 l_header_data += 2;
916 }
917 }
918
919 l_header_length = (OPJ_UINT32)(l_header_data - *l_header_data_start);
920 *l_modified_length_ptr -= l_header_length;
921 *l_header_data_start += l_header_length;
922
923 /* << INDEX */
924 /* End of packet header position. Currently only represents the distance to start of packet
925 Will be updated later by incrementing with packet start value */
926 if (p_pack_info) {
927 p_pack_info->end_ph_pos = (OPJ_INT32)(l_current_data - p_src_data);
928 }
929 /* INDEX >> */
930
931 * p_is_data_present = OPJ_FALSE;
932 *p_data_read = (OPJ_UINT32)(l_current_data - p_src_data);
933 return OPJ_TRUE;
934 }
935
936 l_band = l_res->bands;
937 for (bandno = 0; bandno < l_res->numbands; ++bandno) {
938 opj_tcd_precinct_t *l_prc = &(l_band->precincts[p_pi->precno]);
939
940 if ((l_band->x1-l_band->x0 == 0)||(l_band->y1-l_band->y0 == 0)) {
941 ++l_band;
942 continue;
943 }
944
945 l_nb_code_blocks = l_prc->cw * l_prc->ch;
946 l_cblk = l_prc->cblks.dec;
947 for (cblkno = 0; cblkno < l_nb_code_blocks; cblkno++) {
948 OPJ_UINT32 l_included,l_increment, l_segno;
949 OPJ_INT32 n;
950
951 /* if cblk not yet included before --> inclusion tagtree */
952 if (!l_cblk->numsegs) {
953 l_included = opj_tgt_decode(l_bio, l_prc->incltree, cblkno, (OPJ_INT32)(p_pi->layno + 1));
954 /* else one bit */
955 }
956 else {
957 l_included = opj_bio_read(l_bio, 1);
958 }
959
960 /* if cblk not included */
961 if (!l_included) {
962 l_cblk->numnewpasses = 0;
963 ++l_cblk;
964 JAS_FPRINTF(stderr, "included=%d \n", l_included);
965 continue;
966 }
967
968 /* if cblk not yet included --> zero-bitplane tagtree */
969 if (!l_cblk->numsegs) {
970 OPJ_UINT32 i = 0;
971
972 while (!opj_tgt_decode(l_bio, l_prc->imsbtree, cblkno, (OPJ_INT32)i)) {
973 ++i;
974 }
975
976 l_cblk->numbps = (OPJ_UINT32)l_band->numbps + 1 - i;
977 l_cblk->numlenbits = 3;
978 }
979
980 /* number of coding passes */
981 l_cblk->numnewpasses = opj_t2_getnumpasses(l_bio);
982 l_increment = opj_t2_getcommacode(l_bio);
983
984 /* length indicator increment */
985 l_cblk->numlenbits += l_increment;
986 l_segno = 0;
987
988 if (!l_cblk->numsegs) {
989 if (! opj_t2_init_seg(l_cblk, l_segno, p_tcp->tccps[p_pi->compno].cblksty, 1)) {
990 opj_bio_destroy(l_bio);
991 return OPJ_FALSE;
992 }
993 }
994 else {
995 l_segno = l_cblk->numsegs - 1;
996 if (l_cblk->segs[l_segno].numpasses == l_cblk->segs[l_segno].maxpasses) {
997 ++l_segno;
998 if (! opj_t2_init_seg(l_cblk, l_segno, p_tcp->tccps[p_pi->compno].cblksty, 0)) {
999 opj_bio_destroy(l_bio);
1000 return OPJ_FALSE;
1001 }
1002 }
1003 }
1004 n = (OPJ_INT32)l_cblk->numnewpasses;
1005
1006 do {
1007 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);
1008 l_cblk->segs[l_segno].newlen = opj_bio_read(l_bio, l_cblk->numlenbits + opj_uint_floorlog2(l_cblk->segs[l_segno].numnewpasses));
1009 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 );
1010
1011 n -= (OPJ_INT32)l_cblk->segs[l_segno].numnewpasses;
1012 if (n > 0) {
1013 ++l_segno;
1014
1015 if (! opj_t2_init_seg(l_cblk, l_segno, p_tcp->tccps[p_pi->compno].cblksty, 0)) {
1016 opj_bio_destroy(l_bio);
1017 return OPJ_FALSE;
1018 }
1019 }
1020 } while (n > 0);
1021
1022 ++l_cblk;
1023 }
1024
1025 ++l_band;
1026 }
1027
1028 if (!opj_bio_inalign(l_bio)) {
1029 opj_bio_destroy(l_bio);
1030 return OPJ_FALSE;
1031 }
1032
1033 l_header_data += opj_bio_numbytes(l_bio);
1034 opj_bio_destroy(l_bio);
1035
1036 /* EPH markers */
1037 if (p_tcp->csty & J2K_CP_CSTY_EPH) {
1038 if (p_max_length < 2) {
1039 fprintf(stderr, "Not enough space for expected EPH marker\n");
1040 } else if ((*l_header_data) != 0xff || (*(l_header_data + 1) != 0x92)) {
1041 /* TODO opj_event_msg(t2->cinfo->event_mgr, EVT_ERROR, "Expected EPH marker\n"); */
1042 fprintf(stderr, "Error : expected EPH marker\n");
1043 } else {
1044 l_header_data += 2;
1045 }
1046 }
1047
1048 l_header_length = (OPJ_UINT32)(l_header_data - *l_header_data_start);
1049 JAS_FPRINTF( stderr, "hdrlen=%d \n", l_header_length );
1050 JAS_FPRINTF( stderr, "packet body\n");
1051 *l_modified_length_ptr -= l_header_length;
1052 *l_header_data_start += l_header_length;
1053
1054 /* << INDEX */
1055 /* End of packet header position. Currently only represents the distance to start of packet
1056 Will be updated later by incrementing with packet start value */
1057 if (p_pack_info) {
1058 p_pack_info->end_ph_pos = (OPJ_INT32)(l_current_data - p_src_data);
1059 }
1060 /* INDEX >> */
1061
1062 *p_is_data_present = OPJ_TRUE;
1063 *p_data_read = (OPJ_UINT32)(l_current_data - p_src_data);
1064
1065 return OPJ_TRUE;
1066 }
1067
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)1068 OPJ_BOOL opj_t2_read_packet_data( opj_t2_t* p_t2,
1069 opj_tcd_tile_t *p_tile,
1070 opj_pi_iterator_t *p_pi,
1071 OPJ_BYTE *p_src_data,
1072 OPJ_UINT32 * p_data_read,
1073 OPJ_UINT32 p_max_length,
1074 opj_packet_info_t *pack_info)
1075 {
1076 OPJ_UINT32 bandno, cblkno;
1077 OPJ_UINT32 l_nb_code_blocks;
1078 OPJ_BYTE *l_current_data = p_src_data;
1079 opj_tcd_band_t *l_band = 00;
1080 opj_tcd_cblk_dec_t* l_cblk = 00;
1081 opj_tcd_resolution_t* l_res = &p_tile->comps[p_pi->compno].resolutions[p_pi->resno];
1082
1083 OPJ_ARG_NOT_USED(p_t2);
1084 OPJ_ARG_NOT_USED(pack_info);
1085
1086 l_band = l_res->bands;
1087 for (bandno = 0; bandno < l_res->numbands; ++bandno) {
1088 opj_tcd_precinct_t *l_prc = &l_band->precincts[p_pi->precno];
1089
1090 if ((l_band->x1-l_band->x0 == 0)||(l_band->y1-l_band->y0 == 0)) {
1091 ++l_band;
1092 continue;
1093 }
1094
1095 l_nb_code_blocks = l_prc->cw * l_prc->ch;
1096 l_cblk = l_prc->cblks.dec;
1097
1098 for (cblkno = 0; cblkno < l_nb_code_blocks; ++cblkno) {
1099 opj_tcd_seg_t *l_seg = 00;
1100
1101 if (!l_cblk->numnewpasses) {
1102 /* nothing to do */
1103 ++l_cblk;
1104 continue;
1105 }
1106
1107 if (!l_cblk->numsegs) {
1108 l_seg = l_cblk->segs;
1109 ++l_cblk->numsegs;
1110 l_cblk->data_current_size = 0;
1111 }
1112 else {
1113 l_seg = &l_cblk->segs[l_cblk->numsegs - 1];
1114
1115 if (l_seg->numpasses == l_seg->maxpasses) {
1116 ++l_seg;
1117 ++l_cblk->numsegs;
1118 }
1119 }
1120
1121 do {
1122 if (l_current_data + l_seg->newlen > p_src_data + p_max_length) {
1123 fprintf(stderr, "read: segment too long (%d) with max (%d) for codeblock %d (p=%d, b=%d, r=%d, c=%d)\n",
1124 l_seg->newlen, p_max_length, cblkno, p_pi->precno, bandno, p_pi->resno, p_pi->compno);
1125 return OPJ_FALSE;
1126 }
1127
1128 #ifdef USE_JPWL
1129 /* we need here a j2k handle to verify if making a check to
1130 the validity of cblocks parameters is selected from user (-W) */
1131
1132 /* let's check that we are not exceeding */
1133 if ((l_cblk->len + l_seg->newlen) > 8192) {
1134 opj_event_msg(p_t2->cinfo, EVT_WARNING,
1135 "JPWL: segment too long (%d) for codeblock %d (p=%d, b=%d, r=%d, c=%d)\n",
1136 l_seg->newlen, cblkno, p_pi->precno, bandno, p_pi->resno, p_pi->compno);
1137 if (!JPWL_ASSUME) {
1138 opj_event_msg(p_t2->cinfo, EVT_ERROR, "JPWL: giving up\n");
1139 return OPJ_FALSE;
1140 }
1141 l_seg->newlen = 8192 - l_cblk->len;
1142 opj_event_msg(p_t2->cinfo, EVT_WARNING, " - truncating segment to %d\n", l_seg->newlen);
1143 break;
1144 };
1145
1146 #endif /* USE_JPWL */
1147 /* Check if the cblk->data have allocated enough memory */
1148 if ((l_cblk->data_current_size + l_seg->newlen) > l_cblk->data_max_size) {
1149 OPJ_BYTE* new_cblk_data = (OPJ_BYTE*) opj_realloc(l_cblk->data, l_cblk->data_current_size + l_seg->newlen);
1150 if(! new_cblk_data) {
1151 opj_free(l_cblk->data);
1152 l_cblk->data_max_size = 0;
1153 /* opj_event_msg(p_manager, EVT_ERROR, "Not enough memory to realloc code block cata!\n"); */
1154 return OPJ_FALSE;
1155 }
1156 l_cblk->data_max_size = l_cblk->data_current_size + l_seg->newlen;
1157 l_cblk->data = new_cblk_data;
1158 }
1159
1160 memcpy(l_cblk->data + l_cblk->data_current_size, l_current_data, l_seg->newlen);
1161
1162 if (l_seg->numpasses == 0) {
1163 l_seg->data = &l_cblk->data;
1164 l_seg->dataindex = l_cblk->data_current_size;
1165 }
1166
1167 l_current_data += l_seg->newlen;
1168 l_seg->numpasses += l_seg->numnewpasses;
1169 l_cblk->numnewpasses -= l_seg->numnewpasses;
1170
1171 l_seg->real_num_passes = l_seg->numpasses;
1172 l_cblk->data_current_size += l_seg->newlen;
1173 l_seg->len += l_seg->newlen;
1174
1175 if (l_cblk->numnewpasses > 0) {
1176 ++l_seg;
1177 ++l_cblk->numsegs;
1178 }
1179 } while (l_cblk->numnewpasses > 0);
1180
1181 l_cblk->real_num_segs = l_cblk->numsegs;
1182 ++l_cblk;
1183 } /* next code_block */
1184
1185 ++l_band;
1186 }
1187
1188 *(p_data_read) = (OPJ_UINT32)(l_current_data - p_src_data);
1189
1190 return OPJ_TRUE;
1191 }
1192
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)1193 OPJ_BOOL opj_t2_skip_packet_data( opj_t2_t* p_t2,
1194 opj_tcd_tile_t *p_tile,
1195 opj_pi_iterator_t *p_pi,
1196 OPJ_UINT32 * p_data_read,
1197 OPJ_UINT32 p_max_length,
1198 opj_packet_info_t *pack_info)
1199 {
1200 OPJ_UINT32 bandno, cblkno;
1201 OPJ_UINT32 l_nb_code_blocks;
1202 opj_tcd_band_t *l_band = 00;
1203 opj_tcd_cblk_dec_t* l_cblk = 00;
1204 opj_tcd_resolution_t* l_res = &p_tile->comps[p_pi->compno].resolutions[p_pi->resno];
1205
1206 OPJ_ARG_NOT_USED(p_t2);
1207 OPJ_ARG_NOT_USED(pack_info);
1208
1209 *p_data_read = 0;
1210 l_band = l_res->bands;
1211
1212 for (bandno = 0; bandno < l_res->numbands; ++bandno) {
1213 opj_tcd_precinct_t *l_prc = &l_band->precincts[p_pi->precno];
1214
1215 if ((l_band->x1-l_band->x0 == 0)||(l_band->y1-l_band->y0 == 0)) {
1216 ++l_band;
1217 continue;
1218 }
1219
1220 l_nb_code_blocks = l_prc->cw * l_prc->ch;
1221 l_cblk = l_prc->cblks.dec;
1222
1223 for (cblkno = 0; cblkno < l_nb_code_blocks; ++cblkno) {
1224 opj_tcd_seg_t *l_seg = 00;
1225
1226 if (!l_cblk->numnewpasses) {
1227 /* nothing to do */
1228 ++l_cblk;
1229 continue;
1230 }
1231
1232 if (!l_cblk->numsegs) {
1233 l_seg = l_cblk->segs;
1234 ++l_cblk->numsegs;
1235 l_cblk->data_current_size = 0;
1236 }
1237 else {
1238 l_seg = &l_cblk->segs[l_cblk->numsegs - 1];
1239
1240 if (l_seg->numpasses == l_seg->maxpasses) {
1241 ++l_seg;
1242 ++l_cblk->numsegs;
1243 }
1244 }
1245
1246 do {
1247 if (* p_data_read + l_seg->newlen > p_max_length) {
1248 fprintf(stderr, "skip: segment too long (%d) with max (%d) for codeblock %d (p=%d, b=%d, r=%d, c=%d)\n",
1249 l_seg->newlen, p_max_length, cblkno, p_pi->precno, bandno, p_pi->resno, p_pi->compno);
1250 return OPJ_FALSE;
1251 }
1252
1253 #ifdef USE_JPWL
1254 /* we need here a j2k handle to verify if making a check to
1255 the validity of cblocks parameters is selected from user (-W) */
1256
1257 /* let's check that we are not exceeding */
1258 if ((l_cblk->len + l_seg->newlen) > 8192) {
1259 opj_event_msg(p_t2->cinfo, EVT_WARNING,
1260 "JPWL: segment too long (%d) for codeblock %d (p=%d, b=%d, r=%d, c=%d)\n",
1261 l_seg->newlen, cblkno, p_pi->precno, bandno, p_pi->resno, p_pi->compno);
1262 if (!JPWL_ASSUME) {
1263 opj_event_msg(p_t2->cinfo, EVT_ERROR, "JPWL: giving up\n");
1264 return -999;
1265 }
1266 l_seg->newlen = 8192 - l_cblk->len;
1267 opj_event_msg(p_t2->cinfo, EVT_WARNING, " - truncating segment to %d\n", l_seg->newlen);
1268 break;
1269 };
1270
1271 #endif /* USE_JPWL */
1272 JAS_FPRINTF(stderr, "p_data_read (%d) newlen (%d) \n", *p_data_read, l_seg->newlen );
1273 *(p_data_read) += l_seg->newlen;
1274
1275 l_seg->numpasses += l_seg->numnewpasses;
1276 l_cblk->numnewpasses -= l_seg->numnewpasses;
1277 if (l_cblk->numnewpasses > 0)
1278 {
1279 ++l_seg;
1280 ++l_cblk->numsegs;
1281 }
1282 } while (l_cblk->numnewpasses > 0);
1283
1284 ++l_cblk;
1285 }
1286
1287 ++l_band;
1288 }
1289
1290 return OPJ_TRUE;
1291 }
1292
1293
opj_t2_init_seg(opj_tcd_cblk_dec_t * cblk,OPJ_UINT32 index,OPJ_UINT32 cblksty,OPJ_UINT32 first)1294 OPJ_BOOL opj_t2_init_seg( opj_tcd_cblk_dec_t* cblk,
1295 OPJ_UINT32 index,
1296 OPJ_UINT32 cblksty,
1297 OPJ_UINT32 first)
1298 {
1299 opj_tcd_seg_t* seg = 00;
1300 OPJ_UINT32 l_nb_segs = index + 1;
1301
1302 if (l_nb_segs > cblk->m_current_max_segs) {
1303 opj_tcd_seg_t* new_segs;
1304 cblk->m_current_max_segs += OPJ_J2K_DEFAULT_NB_SEGS;
1305
1306 new_segs = (opj_tcd_seg_t*) opj_realloc(cblk->segs, cblk->m_current_max_segs * sizeof(opj_tcd_seg_t));
1307 if(! new_segs) {
1308 opj_free(cblk->segs);
1309 cblk->segs = NULL;
1310 cblk->m_current_max_segs = 0;
1311 /* opj_event_msg(p_manager, EVT_ERROR, "Not enough memory to initialize segment %d\n", l_nb_segs); */
1312 return OPJ_FALSE;
1313 }
1314 cblk->segs = new_segs;
1315 }
1316
1317 seg = &cblk->segs[index];
1318 memset(seg,0,sizeof(opj_tcd_seg_t));
1319
1320 if (cblksty & J2K_CCP_CBLKSTY_TERMALL) {
1321 seg->maxpasses = 1;
1322 }
1323 else if (cblksty & J2K_CCP_CBLKSTY_LAZY) {
1324 if (first) {
1325 seg->maxpasses = 10;
1326 } else {
1327 seg->maxpasses = (((seg - 1)->maxpasses == 1) || ((seg - 1)->maxpasses == 10)) ? 2 : 1;
1328 }
1329 } else {
1330 seg->maxpasses = 109;
1331 }
1332
1333 return OPJ_TRUE;
1334 }
1335