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