Initial commit.
[pdfium.git] / core / src / fxcodec / fx_libopenjpeg / libopenjpeg20 / t2.c
1 /*
2  * The copyright in this software is being made available under the 2-clauses 
3  * BSD License, included below. This software may be subject to other third 
4  * party and contributor rights, including patent rights, and no such rights
5  * are granted under this license.
6  *
7  * Copyright (c) 2002-2014, Universite catholique de Louvain (UCL), Belgium
8  * Copyright (c) 2002-2014, Professor Benoit Macq
9  * Copyright (c) 2001-2003, David Janssens
10  * Copyright (c) 2002-2003, Yannick Verschueren
11  * Copyright (c) 2003-2007, Francois-Olivier Devaux 
12  * Copyright (c) 2003-2014, Antonin Descampe
13  * Copyright (c) 2005, Herve Drolon, FreeImage Team
14  * Copyright (c) 2008, 2011-2012, Centre National d'Etudes Spatiales (CNES), FR 
15  * Copyright (c) 2012, CS Systemes d'Information, France
16  * All rights reserved.
17  *
18  * Redistribution and use in source and binary forms, with or without
19  * modification, are permitted provided that the following conditions
20  * are met:
21  * 1. Redistributions of source code must retain the above copyright
22  *    notice, this list of conditions and the following disclaimer.
23  * 2. Redistributions in binary form must reproduce the above copyright
24  *    notice, this list of conditions and the following disclaimer in the
25  *    documentation and/or other materials provided with the distribution.
26  *
27  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS `AS IS'
28  * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
29  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
30  * ARE DISCLAIMED.  IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
31  * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
32  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
33  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
34  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
35  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
36  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
37  * POSSIBILITY OF SUCH DAMAGE.
38  */
39
40 #include "opj_includes.h"
41
42 /** @defgroup T2 T2 - Implementation of a tier-2 coding */
43 /*@{*/
44
45 /** @name Local static functions */
46 /*@{*/
47
48 static void opj_t2_putcommacode(opj_bio_t *bio, OPJ_INT32 n);
49
50 static OPJ_UINT32 opj_t2_getcommacode(opj_bio_t *bio); 
51 /**
52 Variable length code for signalling delta Zil (truncation point)
53 @param bio  Bit Input/Output component
54 @param n    delta Zil
55 */
56 static void opj_t2_putnumpasses(opj_bio_t *bio, OPJ_UINT32 n);
57 static OPJ_UINT32 opj_t2_getnumpasses(opj_bio_t *bio);
58
59 /**
60 Encode a packet of a tile to a destination buffer
61 @param tileno Number of the tile encoded
62 @param tile Tile for which to write the packets
63 @param tcp Tile coding parameters
64 @param pi Packet identity
65 @param dest Destination buffer
66 @param p_data_written   FIXME DOC
67 @param len Length of the destination buffer
68 @param cstr_info Codestream information structure
69 @return
70 */
71 static OPJ_BOOL opj_t2_encode_packet(   OPJ_UINT32 tileno,
72                                         opj_tcd_tile_t *tile,
73                                         opj_tcp_t *tcp,
74                                         opj_pi_iterator_t *pi,
75                                         OPJ_BYTE *dest,
76                                         OPJ_UINT32 * p_data_written,
77                                         OPJ_UINT32 len,
78                                         opj_codestream_info_t *cstr_info);
79
80 /**
81 Decode a packet of a tile from a source buffer
82 @param t2 T2 handle
83 @param tile Tile for which to write the packets
84 @param tcp Tile coding parameters
85 @param pi Packet identity
86 @param src Source buffer
87 @param data_read   FIXME DOC
88 @param max_length  FIXME DOC
89 @param pack_info Packet information
90
91 @return  FIXME DOC
92 */
93 static OPJ_BOOL opj_t2_decode_packet(   opj_t2_t* t2,
94                                         opj_tcd_tile_t *tile,
95                                         opj_tcp_t *tcp,
96                                         opj_pi_iterator_t *pi,
97                                         OPJ_BYTE *src,
98                                         OPJ_UINT32 * data_read,
99                                         OPJ_UINT32 max_length,
100                                         opj_packet_info_t *pack_info);
101
102 static OPJ_BOOL opj_t2_skip_packet( opj_t2_t* p_t2,
103                                     opj_tcd_tile_t *p_tile,
104                                     opj_tcp_t *p_tcp,
105                                     opj_pi_iterator_t *p_pi,
106                                     OPJ_BYTE *p_src,
107                                     OPJ_UINT32 * p_data_read,
108                                     OPJ_UINT32 p_max_length,
109                                     opj_packet_info_t *p_pack_info);
110
111 static OPJ_BOOL opj_t2_read_packet_header(  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_BOOL * p_is_data_present,
116                                             OPJ_BYTE *p_src_data,
117                                             OPJ_UINT32 * p_data_read,
118                                             OPJ_UINT32 p_max_length,
119                                             opj_packet_info_t *p_pack_info);
120
121 static OPJ_BOOL opj_t2_read_packet_data(opj_t2_t* p_t2,
122                                         opj_tcd_tile_t *p_tile,
123                                         opj_pi_iterator_t *p_pi,
124                                         OPJ_BYTE *p_src_data,
125                                         OPJ_UINT32 * p_data_read,
126                                         OPJ_UINT32 p_max_length,
127                                         opj_packet_info_t *pack_info);
128
129 static OPJ_BOOL opj_t2_skip_packet_data(opj_t2_t* p_t2,
130                                         opj_tcd_tile_t *p_tile,
131                                         opj_pi_iterator_t *p_pi,
132                                         OPJ_UINT32 * p_data_read,
133                                         OPJ_UINT32 p_max_length,
134                                         opj_packet_info_t *pack_info);
135
136 /**
137 @param cblk
138 @param index
139 @param cblksty
140 @param first
141 */
142 static OPJ_BOOL opj_t2_init_seg(    opj_tcd_cblk_dec_t* cblk,
143                                     OPJ_UINT32 index,
144                                     OPJ_UINT32 cblksty,
145                                     OPJ_UINT32 first);
146
147 /*@}*/
148
149 /*@}*/
150
151 /* ----------------------------------------------------------------------- */
152
153 /* #define RESTART 0x04 */
154 static void opj_t2_putcommacode(opj_bio_t *bio, OPJ_INT32 n) {
155         while (--n >= 0) {
156                 opj_bio_write(bio, 1, 1);
157         }
158         opj_bio_write(bio, 0, 1);
159 }
160
161 OPJ_UINT32 opj_t2_getcommacode(opj_bio_t *bio) 
162 {
163     OPJ_UINT32 n = 0;
164     while (opj_bio_read(bio, 1)) {
165             ++n;
166     }
167     return n;
168 }
169
170 void opj_t2_putnumpasses(opj_bio_t *bio, OPJ_UINT32 n) {
171         if (n == 1) {
172                 opj_bio_write(bio, 0, 1);
173         } else if (n == 2) {
174                 opj_bio_write(bio, 2, 2);
175         } else if (n <= 5) {
176                 opj_bio_write(bio, 0xc | (n - 3), 4);
177         } else if (n <= 36) {
178                 opj_bio_write(bio, 0x1e0 | (n - 6), 9);
179         } else if (n <= 164) {
180                 opj_bio_write(bio, 0xff80 | (n - 37), 16);
181         }
182 }
183
184 OPJ_UINT32 opj_t2_getnumpasses(opj_bio_t *bio) {
185         OPJ_UINT32 n;
186         if (!opj_bio_read(bio, 1))
187                 return 1;
188         if (!opj_bio_read(bio, 1))
189                 return 2;
190         if ((n = opj_bio_read(bio, 2)) != 3)
191                 return (3 + n);
192         if ((n = opj_bio_read(bio, 5)) != 31)
193                 return (6 + n);
194         return (37 + opj_bio_read(bio, 7));
195 }
196
197 /* ----------------------------------------------------------------------- */
198
199 OPJ_BOOL opj_t2_encode_packets( opj_t2_t* p_t2,
200                                 OPJ_UINT32 p_tile_no,
201                                 opj_tcd_tile_t *p_tile,
202                                 OPJ_UINT32 p_maxlayers,
203                                 OPJ_BYTE *p_dest,
204                                 OPJ_UINT32 * p_data_written,
205                                 OPJ_UINT32 p_max_len,
206                                 opj_codestream_info_t *cstr_info,
207                                 OPJ_UINT32 p_tp_num,
208                                 OPJ_INT32 p_tp_pos,
209                                 OPJ_UINT32 p_pino,
210                                 J2K_T2_MODE p_t2_mode)
211 {
212         OPJ_BYTE *l_current_data = p_dest;
213         OPJ_UINT32 l_nb_bytes = 0;
214         OPJ_UINT32 compno;
215         OPJ_UINT32 poc;
216         opj_pi_iterator_t *l_pi = 00;
217         opj_pi_iterator_t *l_current_pi = 00;
218         opj_image_t *l_image = p_t2->image;
219         opj_cp_t *l_cp = p_t2->cp;
220         opj_tcp_t *l_tcp = &l_cp->tcps[p_tile_no];
221         OPJ_UINT32 pocno = l_cp->m_specific_param.m_enc.m_cinema == OPJ_CINEMA4K_24? 2: 1;
222         OPJ_UINT32 l_max_comp = l_cp->m_specific_param.m_enc.m_max_comp_size > 0 ? l_image->numcomps : 1;
223         OPJ_UINT32 l_nb_pocs = l_tcp->numpocs + 1;
224
225         l_pi = opj_pi_initialise_encode(l_image, l_cp, p_tile_no, p_t2_mode);
226         if (!l_pi) {
227                 return OPJ_FALSE;
228         }
229
230         * p_data_written = 0;
231
232         if (p_t2_mode == THRESH_CALC ){ /* Calculating threshold */
233                 l_current_pi = l_pi;
234
235                 for     (compno = 0; compno < l_max_comp; ++compno) {
236                         OPJ_UINT32 l_comp_len = 0;
237                         l_current_pi = l_pi;
238
239                         for (poc = 0; poc < pocno ; ++poc) {
240                                 OPJ_UINT32 l_tp_num = compno;
241
242                                 /* TODO MSD : check why this function cannot fail (cf. v1) */
243                                 opj_pi_create_encode(l_pi, l_cp,p_tile_no,poc,l_tp_num,p_tp_pos,p_t2_mode);
244
245                                 while (opj_pi_next(l_current_pi)) {
246                                         if (l_current_pi->layno < p_maxlayers) {
247                                                 l_nb_bytes = 0;
248
249                                                 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)) {
250                                                         opj_pi_destroy(l_pi, l_nb_pocs);
251                                                         return OPJ_FALSE;
252                                                 }
253
254                                                 l_comp_len += l_nb_bytes;
255                                                 l_current_data += l_nb_bytes;
256                                                 p_max_len -= l_nb_bytes;
257
258                                                 * p_data_written += l_nb_bytes;
259                                         }
260                                 }
261
262                                 if (l_cp->m_specific_param.m_enc.m_max_comp_size) {
263                                         if (l_comp_len > l_cp->m_specific_param.m_enc.m_max_comp_size) {
264                                                 opj_pi_destroy(l_pi, l_nb_pocs);
265                                                 return OPJ_FALSE;
266                                         }
267                                 }
268
269                                 ++l_current_pi;
270                         }
271                 }
272         }
273         else {  /* t2_mode == FINAL_PASS  */
274                 opj_pi_create_encode(l_pi, l_cp,p_tile_no,p_pino,p_tp_num,p_tp_pos,p_t2_mode);
275
276                 l_current_pi = &l_pi[p_pino];
277
278                 while (opj_pi_next(l_current_pi)) {
279                         if (l_current_pi->layno < p_maxlayers) {
280                                 l_nb_bytes=0;
281
282                                 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)) {
283                                         opj_pi_destroy(l_pi, l_nb_pocs);
284                                         return OPJ_FALSE;
285                                 }
286
287                                 l_current_data += l_nb_bytes;
288                                 p_max_len -= l_nb_bytes;
289
290                                 * p_data_written += l_nb_bytes;
291
292                                 /* INDEX >> */
293                                 if(cstr_info) {
294                                         if(cstr_info->index_write) {
295                                                 opj_tile_info_t *info_TL = &cstr_info->tile[p_tile_no];
296                                                 opj_packet_info_t *info_PK = &info_TL->packet[cstr_info->packno];
297                                                 if (!cstr_info->packno) {
298                                                         info_PK->start_pos = info_TL->end_header + 1;
299                                                 } else {
300                                                         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;
301                                                 }
302                                                 info_PK->end_pos = info_PK->start_pos + l_nb_bytes - 1;
303                                                 info_PK->end_ph_pos += info_PK->start_pos - 1;  /* End of packet header which now only represents the distance
304                                                                                                                                                                                                                                                    to start of packet is incremented by value of start of packet*/
305                                         }
306
307                                         cstr_info->packno++;
308                                 }
309                                 /* << INDEX */
310                                 ++p_tile->packno;
311                         }
312                 }
313         }
314
315         opj_pi_destroy(l_pi, l_nb_pocs);
316
317         return OPJ_TRUE;
318 }
319
320 /* see issue 80 */
321 #if 0
322 #define JAS_FPRINTF fprintf
323 #else
324 /* issue 290 */
325 static void opj_null_jas_fprintf(FILE* file, const char * format, ...)
326 {
327   (void)file;
328   (void)format;
329 }
330 #define JAS_FPRINTF opj_null_jas_fprintf
331 #endif
332
333 OPJ_BOOL opj_t2_decode_packets( opj_t2_t *p_t2,
334                                 OPJ_UINT32 p_tile_no,
335                                 opj_tcd_tile_t *p_tile,
336                                 OPJ_BYTE *p_src,
337                                 OPJ_UINT32 * p_data_read,
338                                 OPJ_UINT32 p_max_len,
339                                 opj_codestream_index_t *p_cstr_index)
340 {
341         OPJ_BYTE *l_current_data = p_src;
342         opj_pi_iterator_t *l_pi = 00;
343         OPJ_UINT32 pino;
344         opj_image_t *l_image = p_t2->image;
345         opj_cp_t *l_cp = p_t2->cp;
346         opj_tcp_t *l_tcp = &(p_t2->cp->tcps[p_tile_no]);
347         OPJ_UINT32 l_nb_bytes_read;
348         OPJ_UINT32 l_nb_pocs = l_tcp->numpocs + 1;
349         opj_pi_iterator_t *l_current_pi = 00;
350 #ifdef TODO_MSD
351         OPJ_UINT32 curtp = 0;
352         OPJ_UINT32 tp_start_packno;
353 #endif 
354         opj_packet_info_t *l_pack_info = 00;
355         opj_image_comp_t* l_img_comp = 00;
356
357         OPJ_ARG_NOT_USED(p_cstr_index);
358
359 #ifdef TODO_MSD
360         if (p_cstr_index) {
361                 l_pack_info = p_cstr_index->tile_index[p_tile_no].packet;
362         }
363 #endif
364
365         /* create a packet iterator */
366         l_pi = opj_pi_create_decode(l_image, l_cp, p_tile_no);
367         if (!l_pi) {
368                 return OPJ_FALSE;
369         }
370
371
372         l_current_pi = l_pi;
373
374         for     (pino = 0; pino <= l_tcp->numpocs; ++pino) {
375
376                 /* if the resolution needed is too low, one dim of the tilec could be equal to zero
377                  * and no packets are used to decode this resolution and
378                  * l_current_pi->resno is always >= p_tile->comps[l_current_pi->compno].minimum_num_resolutions
379                  * and no l_img_comp->resno_decoded are computed
380                  */
381                 OPJ_BOOL* first_pass_failed = (OPJ_BOOL*)opj_malloc(l_image->numcomps * sizeof(OPJ_BOOL));
382                 if (!first_pass_failed)
383                 {
384                     opj_pi_destroy(l_pi,l_nb_pocs);
385                     return OPJ_FALSE;
386                 }
387                 memset(first_pass_failed, OPJ_TRUE, l_image->numcomps * sizeof(OPJ_BOOL));
388
389                 while (opj_pi_next(l_current_pi)) {
390                   JAS_FPRINTF( stderr, "packet offset=00000166 prg=%d cmptno=%02d rlvlno=%02d prcno=%03d lyrno=%02d\n\n",
391                     l_current_pi->poc.prg1, l_current_pi->compno, l_current_pi->resno, l_current_pi->precno, l_current_pi->layno );
392
393                         if (l_tcp->num_layers_to_decode > l_current_pi->layno
394                                         && l_current_pi->resno < p_tile->comps[l_current_pi->compno].minimum_num_resolutions) {
395                                 l_nb_bytes_read = 0;
396
397                                 first_pass_failed[l_current_pi->compno] = OPJ_FALSE;
398
399                                 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)) {
400                                         opj_pi_destroy(l_pi,l_nb_pocs);
401                                         opj_free(first_pass_failed);
402                                         return OPJ_FALSE;
403                                 }
404
405                                 l_img_comp = &(l_image->comps[l_current_pi->compno]);
406                                 l_img_comp->resno_decoded = opj_uint_max(l_current_pi->resno, l_img_comp->resno_decoded);
407                         }
408                         else {
409                                 l_nb_bytes_read = 0;
410                                 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)) {
411                                         opj_pi_destroy(l_pi,l_nb_pocs);
412                                         opj_free(first_pass_failed);
413                                         return OPJ_FALSE;
414                                 }
415                         }
416
417                         if (first_pass_failed[l_current_pi->compno]) {
418                                 l_img_comp = &(l_image->comps[l_current_pi->compno]);
419                                 if (l_img_comp->resno_decoded == 0)
420                                         l_img_comp->resno_decoded = p_tile->comps[l_current_pi->compno].minimum_num_resolutions - 1;
421                         }
422
423                         l_current_data += l_nb_bytes_read;
424                         p_max_len -= l_nb_bytes_read;
425
426                         /* INDEX >> */
427 #ifdef TODO_MSD
428                         if(p_cstr_info) {
429                                 opj_tile_info_v2_t *info_TL = &p_cstr_info->tile[p_tile_no];
430                                 opj_packet_info_t *info_PK = &info_TL->packet[p_cstr_info->packno];
431                                 tp_start_packno = 0;
432                                 if (!p_cstr_info->packno) {
433                                         info_PK->start_pos = info_TL->end_header + 1;
434                                 } 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 */
435                                         info_TL->tp[curtp].tp_numpacks = p_cstr_info->packno - tp_start_packno; /* Number of packets in previous tile-part */
436                                         tp_start_packno = p_cstr_info->packno;
437                                         curtp++;
438                                         info_PK->start_pos = p_cstr_info->tile[p_tile_no].tp[curtp].tp_end_header+1;
439                                 } else {
440                                         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;
441                                 }
442                                 info_PK->end_pos = info_PK->start_pos + l_nb_bytes_read - 1;
443                                 info_PK->end_ph_pos += info_PK->start_pos - 1;  /* End of packet header which now only represents the distance */
444                                 ++p_cstr_info->packno;
445                         }
446 #endif
447                         /* << INDEX */
448                 }
449                 ++l_current_pi;
450
451                 opj_free(first_pass_failed);
452         }
453         /* INDEX >> */
454 #ifdef TODO_MSD
455         if
456                 (p_cstr_info) {
457                 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 */
458         }
459 #endif
460         /* << INDEX */
461
462         /* don't forget to release pi */
463         opj_pi_destroy(l_pi,l_nb_pocs);
464         *p_data_read = (OPJ_UINT32)(l_current_data - p_src);
465         return OPJ_TRUE;
466 }
467
468 /* ----------------------------------------------------------------------- */
469
470 /**
471  * Creates a Tier 2 handle
472  *
473  * @param       p_image         Source or destination image
474  * @param       p_cp            Image coding parameters.
475  * @return              a new T2 handle if successful, NULL otherwise.
476 */
477 opj_t2_t* opj_t2_create(opj_image_t *p_image, opj_cp_t *p_cp)
478 {
479         /* create the t2 structure */
480         opj_t2_t *l_t2 = (opj_t2_t*)opj_malloc(sizeof(opj_t2_t));
481         if (!l_t2) {
482                 return NULL;
483         }
484         memset(l_t2,0,sizeof(opj_t2_t));
485
486         l_t2->image = p_image;
487         l_t2->cp = p_cp;
488
489         return l_t2;
490 }
491
492 void opj_t2_destroy(opj_t2_t *t2) {
493         if(t2) {
494                 opj_free(t2);
495         }
496 }
497
498 OPJ_BOOL opj_t2_decode_packet(  opj_t2_t* p_t2,
499                                 opj_tcd_tile_t *p_tile,
500                                 opj_tcp_t *p_tcp,
501                                 opj_pi_iterator_t *p_pi,
502                                 OPJ_BYTE *p_src,
503                                 OPJ_UINT32 * p_data_read,
504                                 OPJ_UINT32 p_max_length,
505                                 opj_packet_info_t *p_pack_info)
506 {
507         OPJ_BOOL l_read_data;
508         OPJ_UINT32 l_nb_bytes_read = 0;
509         OPJ_UINT32 l_nb_total_bytes_read = 0;
510
511         *p_data_read = 0;
512
513         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)) {
514                 return OPJ_FALSE;
515         }
516
517         p_src += l_nb_bytes_read;
518         l_nb_total_bytes_read += l_nb_bytes_read;
519         p_max_length -= l_nb_bytes_read;
520
521         /* we should read data for the packet */
522         if (l_read_data) {
523                 l_nb_bytes_read = 0;
524
525                 if (! opj_t2_read_packet_data(p_t2,p_tile,p_pi,p_src,&l_nb_bytes_read,p_max_length,p_pack_info)) {
526                         return OPJ_FALSE;
527                 }
528
529                 l_nb_total_bytes_read += l_nb_bytes_read;
530         }
531
532         *p_data_read = l_nb_total_bytes_read;
533
534         return OPJ_TRUE;
535 }
536
537 OPJ_BOOL opj_t2_encode_packet(  OPJ_UINT32 tileno,
538                                 opj_tcd_tile_t * tile,
539                                 opj_tcp_t * tcp,
540                                 opj_pi_iterator_t *pi,
541                                 OPJ_BYTE *dest,
542                                 OPJ_UINT32 * p_data_written,
543                                 OPJ_UINT32 length,
544                                 opj_codestream_info_t *cstr_info)
545 {
546         OPJ_UINT32 bandno, cblkno;
547         OPJ_BYTE* c = dest;
548         OPJ_UINT32 l_nb_bytes;
549         OPJ_UINT32 compno = pi->compno;     /* component value */
550         OPJ_UINT32 resno  = pi->resno;      /* resolution level value */
551         OPJ_UINT32 precno = pi->precno;     /* precinct value */
552         OPJ_UINT32 layno  = pi->layno;      /* quality layer value */
553         OPJ_UINT32 l_nb_blocks;
554         opj_tcd_band_t *band = 00;
555         opj_tcd_cblk_enc_t* cblk = 00;
556         opj_tcd_pass_t *pass = 00;
557
558         opj_tcd_tilecomp_t *tilec = &tile->comps[compno];
559         opj_tcd_resolution_t *res = &tilec->resolutions[resno];
560
561         opj_bio_t *bio = 00;    /* BIO component */
562
563         /* <SOP 0xff91> */
564         if (tcp->csty & J2K_CP_CSTY_SOP) {
565                 c[0] = 255;
566                 c[1] = 145;
567                 c[2] = 0;
568                 c[3] = 4;
569 #if 0
570                 c[4] = (tile->packno % 65536) / 256;
571                 c[5] = (tile->packno % 65536) % 256;
572 #else
573                 c[4] = (tile->packno >> 8) & 0xff; /* packno is uint32_t */
574                 c[5] = tile->packno & 0xff;
575 #endif
576                 c += 6;
577                 length -= 6;
578         }
579         /* </SOP> */
580
581         if (!layno) {
582                 band = res->bands;
583
584                 for(bandno = 0; bandno < res->numbands; ++bandno) {
585                         opj_tcd_precinct_t *prc = &band->precincts[precno];
586
587                         opj_tgt_reset(prc->incltree);
588                         opj_tgt_reset(prc->imsbtree);
589
590                         l_nb_blocks = prc->cw * prc->ch;
591                         for     (cblkno = 0; cblkno < l_nb_blocks; ++cblkno) {
592                                 cblk = &prc->cblks.enc[cblkno];
593
594                                 cblk->numpasses = 0;
595                                 opj_tgt_setvalue(prc->imsbtree, cblkno, band->numbps - (OPJ_INT32)cblk->numbps);
596                         }
597                         ++band;
598                 }
599         }
600
601         bio = opj_bio_create();
602         opj_bio_init_enc(bio, c, length);
603         opj_bio_write(bio, 1, 1);           /* Empty header bit */
604
605         /* Writing Packet header */
606         band = res->bands;
607         for (bandno = 0; bandno < res->numbands; ++bandno)      {
608                 opj_tcd_precinct_t *prc = &band->precincts[precno];
609
610                 l_nb_blocks = prc->cw * prc->ch;
611                 cblk = prc->cblks.enc;
612
613                 for (cblkno = 0; cblkno < l_nb_blocks; ++cblkno) {
614                         opj_tcd_layer_t *layer = &cblk->layers[layno];
615
616                         if (!cblk->numpasses && layer->numpasses) {
617                                 opj_tgt_setvalue(prc->incltree, cblkno, (OPJ_INT32)layno);
618                         }
619
620                         ++cblk;
621                 }
622
623                 cblk = prc->cblks.enc;
624                 for (cblkno = 0; cblkno < l_nb_blocks; cblkno++) {
625                         opj_tcd_layer_t *layer = &cblk->layers[layno];
626                         OPJ_UINT32 increment = 0;
627                         OPJ_UINT32 nump = 0;
628                         OPJ_UINT32 len = 0, passno;
629                         OPJ_UINT32 l_nb_passes;
630
631                         /* cblk inclusion bits */
632                         if (!cblk->numpasses) {
633                                 opj_tgt_encode(bio, prc->incltree, cblkno, (OPJ_INT32)(layno + 1));
634                         } else {
635                                 opj_bio_write(bio, layer->numpasses != 0, 1);
636                         }
637
638                         /* if cblk not included, go to the next cblk  */
639                         if (!layer->numpasses) {
640                                 ++cblk;
641                                 continue;
642                         }
643
644                         /* if first instance of cblk --> zero bit-planes information */
645                         if (!cblk->numpasses) {
646                                 cblk->numlenbits = 3;
647                                 opj_tgt_encode(bio, prc->imsbtree, cblkno, 999);
648                         }
649
650                         /* number of coding passes included */
651                         opj_t2_putnumpasses(bio, layer->numpasses);
652                         l_nb_passes = cblk->numpasses + layer->numpasses;
653                         pass = cblk->passes +  cblk->numpasses;
654
655                         /* computation of the increase of the length indicator and insertion in the header     */
656                         for (passno = cblk->numpasses; passno < l_nb_passes; ++passno) {
657                                 ++nump;
658                                 len += pass->len;
659
660                                 if (pass->term || passno == (cblk->numpasses + layer->numpasses) - 1) {
661                                   increment = (OPJ_UINT32)opj_int_max((OPJ_INT32)increment, opj_int_floorlog2((OPJ_INT32)len) + 1
662                                     - ((OPJ_INT32)cblk->numlenbits + opj_int_floorlog2((OPJ_INT32)nump)));
663                                         len = 0;
664                                         nump = 0;
665                                 }
666
667                                 ++pass;
668                         }
669                         opj_t2_putcommacode(bio, (OPJ_INT32)increment);
670
671                         /* computation of the new Length indicator */
672                         cblk->numlenbits += increment;
673
674                         pass = cblk->passes +  cblk->numpasses;
675                         /* insertion of the codeword segment length */
676                         for (passno = cblk->numpasses; passno < l_nb_passes; ++passno) {
677                                 nump++;
678                                 len += pass->len;
679
680                                 if (pass->term || passno == (cblk->numpasses + layer->numpasses) - 1) {
681                                         opj_bio_write(bio, (OPJ_UINT32)len, cblk->numlenbits + (OPJ_UINT32)opj_int_floorlog2((OPJ_INT32)nump));
682                                         len = 0;
683                                         nump = 0;
684                                 }
685                                 ++pass;
686                         }
687
688                         ++cblk;
689                 }
690
691                 ++band;
692         }
693
694         if (!opj_bio_flush(bio)) {
695                 opj_bio_destroy(bio);
696                 return OPJ_FALSE;               /* modified to eliminate longjmp !! */
697         }
698
699         l_nb_bytes = (OPJ_UINT32)opj_bio_numbytes(bio);
700         c += l_nb_bytes;
701         length -= l_nb_bytes;
702
703         opj_bio_destroy(bio);
704
705         /* <EPH 0xff92> */
706         if (tcp->csty & J2K_CP_CSTY_EPH) {
707                 c[0] = 255;
708                 c[1] = 146;
709                 c += 2;
710                 length -= 2;
711         }
712         /* </EPH> */
713
714         /* << INDEX */
715         /* End of packet header position. Currently only represents the distance to start of packet
716            Will be updated later by incrementing with packet start value*/
717         if(cstr_info && cstr_info->index_write) {
718                 opj_packet_info_t *info_PK = &cstr_info->tile[tileno].packet[cstr_info->packno];
719                 info_PK->end_ph_pos = (OPJ_INT32)(c - dest);
720         }
721         /* INDEX >> */
722
723         /* Writing the packet body */
724         band = res->bands;
725         for (bandno = 0; bandno < res->numbands; bandno++) {
726                 opj_tcd_precinct_t *prc = &band->precincts[precno];
727
728                 l_nb_blocks = prc->cw * prc->ch;
729                 cblk = prc->cblks.enc;
730
731                 for (cblkno = 0; cblkno < l_nb_blocks; ++cblkno) {
732                         opj_tcd_layer_t *layer = &cblk->layers[layno];
733
734                         if (!layer->numpasses) {
735                                 ++cblk;
736                                 continue;
737                         }
738
739                         if (layer->len > length) {
740                                 return OPJ_FALSE;
741                         }
742
743                         memcpy(c, layer->data, layer->len);
744                         cblk->numpasses += layer->numpasses;
745                         c += layer->len;
746                         length -= layer->len;
747
748                         /* << INDEX */
749                         if(cstr_info && cstr_info->index_write) {
750                                 opj_packet_info_t *info_PK = &cstr_info->tile[tileno].packet[cstr_info->packno];
751                                 info_PK->disto += layer->disto;
752                                 if (cstr_info->D_max < info_PK->disto) {
753                                         cstr_info->D_max = info_PK->disto;
754                                 }
755                         }
756
757                         ++cblk;
758                         /* INDEX >> */
759                 }
760                 ++band;
761         }
762
763         assert( c >= dest );
764         * p_data_written += (OPJ_UINT32)(c - dest);
765
766         return OPJ_TRUE;
767 }
768
769 static OPJ_BOOL opj_t2_skip_packet( opj_t2_t* p_t2,
770                                     opj_tcd_tile_t *p_tile,
771                                     opj_tcp_t *p_tcp,
772                                     opj_pi_iterator_t *p_pi,
773                                     OPJ_BYTE *p_src,
774                                     OPJ_UINT32 * p_data_read,
775                                     OPJ_UINT32 p_max_length,
776                                     opj_packet_info_t *p_pack_info)
777 {
778         OPJ_BOOL l_read_data;
779         OPJ_UINT32 l_nb_bytes_read = 0;
780         OPJ_UINT32 l_nb_total_bytes_read = 0;
781
782         *p_data_read = 0;
783
784         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)) {
785                 return OPJ_FALSE;
786         }
787
788         p_src += l_nb_bytes_read;
789         l_nb_total_bytes_read += l_nb_bytes_read;
790         p_max_length -= l_nb_bytes_read;
791
792         /* we should read data for the packet */
793         if (l_read_data) {
794                 l_nb_bytes_read = 0;
795
796                 if (! opj_t2_skip_packet_data(p_t2,p_tile,p_pi,&l_nb_bytes_read,p_max_length,p_pack_info)) {
797                         return OPJ_FALSE;
798                 }
799
800                 l_nb_total_bytes_read += l_nb_bytes_read;
801         }
802         *p_data_read = l_nb_total_bytes_read;
803
804         return OPJ_TRUE;
805 }
806
807
808 OPJ_BOOL opj_t2_read_packet_header( opj_t2_t* p_t2,
809                                     opj_tcd_tile_t *p_tile,
810                                     opj_tcp_t *p_tcp,
811                                     opj_pi_iterator_t *p_pi,
812                                     OPJ_BOOL * p_is_data_present,
813                                     OPJ_BYTE *p_src_data,
814                                     OPJ_UINT32 * p_data_read,
815                                     OPJ_UINT32 p_max_length,
816                                     opj_packet_info_t *p_pack_info)
817
818 {
819         /* loop */
820         OPJ_UINT32 bandno, cblkno;
821         OPJ_UINT32 l_nb_code_blocks;
822         OPJ_UINT32 l_remaining_length;
823         OPJ_UINT32 l_header_length;
824         OPJ_UINT32 * l_modified_length_ptr = 00;
825         OPJ_BYTE *l_current_data = p_src_data;
826         opj_cp_t *l_cp = p_t2->cp;
827         opj_bio_t *l_bio = 00;  /* BIO component */
828         opj_tcd_band_t *l_band = 00;
829         opj_tcd_cblk_dec_t* l_cblk = 00;
830         opj_tcd_resolution_t* l_res = &p_tile->comps[p_pi->compno].resolutions[p_pi->resno];
831
832         OPJ_BYTE *l_header_data = 00;
833         OPJ_BYTE **l_header_data_start = 00;
834
835         OPJ_UINT32 l_present;
836
837         if (p_pi->layno == 0) {
838                 l_band = l_res->bands;
839
840                 /* reset tagtrees */
841                 for (bandno = 0; bandno < l_res->numbands; ++bandno) {
842                         opj_tcd_precinct_t *l_prc = &l_band->precincts[p_pi->precno];
843
844                         if ( ! ((l_band->x1-l_band->x0 == 0)||(l_band->y1-l_band->y0 == 0)) ) {
845                                 opj_tgt_reset(l_prc->incltree);
846                                 opj_tgt_reset(l_prc->imsbtree);
847                                 l_cblk = l_prc->cblks.dec;
848
849                                 l_nb_code_blocks = l_prc->cw * l_prc->ch;
850                                 for (cblkno = 0; cblkno < l_nb_code_blocks; ++cblkno) {
851                                         l_cblk->numsegs = 0;
852                                         l_cblk->real_num_segs = 0;
853                                         ++l_cblk;
854                                 }
855                         }
856
857                         ++l_band;
858                 }
859         }
860
861         /* SOP markers */
862
863         if (p_tcp->csty & J2K_CP_CSTY_SOP) {
864                 if (p_max_length < 6) {
865                         /* TODO opj_event_msg(p_t2->cinfo->event_mgr, EVT_WARNING, "Not enough space for expected SOP marker\n"); */
866                         printf("Not enough space for expected SOP marker\n");
867                 } else if ((*l_current_data) != 0xff || (*(l_current_data + 1) != 0x91)) {
868                         /* TODO opj_event_msg(p_t2->cinfo->event_mgr, EVT_WARNING, "Expected SOP marker\n"); */
869                         printf("Expected SOP marker\n");
870                         fprintf(stderr, "Error : expected SOP marker\n");
871                 } else {
872                         l_current_data += 6;
873                 }
874
875                 /** TODO : check the Nsop value */
876         }
877
878         /*
879         When the marker PPT/PPM is used the packet header are store in PPT/PPM marker
880         This part deal with this caracteristic
881         step 1: Read packet header in the saved structure
882         step 2: Return to codestream for decoding
883         */
884
885         l_bio = opj_bio_create();
886         if (! l_bio) {
887                 return OPJ_FALSE;
888         }
889
890         if (l_cp->ppm == 1) { /* PPM */
891                 l_header_data_start = &l_cp->ppm_data;
892                 l_header_data = *l_header_data_start;
893                 l_modified_length_ptr = &(l_cp->ppm_len);
894
895         }
896         else if (p_tcp->ppt == 1) { /* PPT */
897                 l_header_data_start = &(p_tcp->ppt_data);
898                 l_header_data = *l_header_data_start;
899                 l_modified_length_ptr = &(p_tcp->ppt_len);
900         }
901         else {  /* Normal Case */
902                 l_header_data_start = &(l_current_data);
903                 l_header_data = *l_header_data_start;
904                 l_remaining_length = (OPJ_UINT32)(p_src_data+p_max_length-l_header_data);
905                 l_modified_length_ptr = &(l_remaining_length);
906         }
907
908         opj_bio_init_dec(l_bio, l_header_data,*l_modified_length_ptr);
909
910         l_present = opj_bio_read(l_bio, 1);
911         JAS_FPRINTF(stderr, "present=%d \n", l_present );
912         if (!l_present) {
913             /* TODO MSD: no test to control the output of this function*/
914                 opj_bio_inalign(l_bio);
915                 l_header_data += opj_bio_numbytes(l_bio);
916                 opj_bio_destroy(l_bio);
917
918                 /* EPH markers */
919                 if (p_tcp->csty & J2K_CP_CSTY_EPH) {
920                         if (p_max_length < 2) {
921                                 fprintf(stderr, "Not enough space for expected EPH marker\n");
922                         } else if ((*l_header_data) != 0xff || (*(l_header_data + 1) != 0x92)) {
923                                 fprintf(stderr, "Error : expected EPH marker\n");
924                         } else {
925                                 l_header_data += 2;
926                         }
927                 }
928
929                 l_header_length = (OPJ_UINT32)(l_header_data - *l_header_data_start);
930                 *l_modified_length_ptr -= l_header_length;
931                 *l_header_data_start += l_header_length;
932
933                 /* << INDEX */
934                 /* End of packet header position. Currently only represents the distance to start of packet
935                    Will be updated later by incrementing with packet start value */
936                 if (p_pack_info) {
937                         p_pack_info->end_ph_pos = (OPJ_INT32)(l_current_data - p_src_data);
938                 }
939                 /* INDEX >> */
940
941                 * p_is_data_present = OPJ_FALSE;
942                 *p_data_read = (OPJ_UINT32)(l_current_data - p_src_data);
943                 return OPJ_TRUE;
944         }
945
946         l_band = l_res->bands;
947         for (bandno = 0; bandno < l_res->numbands; ++bandno) {
948                 opj_tcd_precinct_t *l_prc = &(l_band->precincts[p_pi->precno]);
949
950                 if ((l_band->x1-l_band->x0 == 0)||(l_band->y1-l_band->y0 == 0)) {
951                         ++l_band;
952                         continue;
953                 }
954
955                 l_nb_code_blocks = l_prc->cw * l_prc->ch;
956                 l_cblk = l_prc->cblks.dec;
957                 for (cblkno = 0; cblkno < l_nb_code_blocks; cblkno++) {
958                         OPJ_UINT32 l_included,l_increment, l_segno;
959                         OPJ_INT32 n;
960
961                         /* if cblk not yet included before --> inclusion tagtree */
962                         if (!l_cblk->numsegs) {
963                                 l_included = opj_tgt_decode(l_bio, l_prc->incltree, cblkno, (OPJ_INT32)(p_pi->layno + 1));
964                                 /* else one bit */
965                         }
966                         else {
967                                 l_included = opj_bio_read(l_bio, 1);
968                         }
969
970                         /* if cblk not included */
971                         if (!l_included) {
972                                 l_cblk->numnewpasses = 0;
973                                 ++l_cblk;
974         JAS_FPRINTF(stderr, "included=%d \n", l_included);
975                                 continue;
976                         }
977
978                         /* if cblk not yet included --> zero-bitplane tagtree */
979                         if (!l_cblk->numsegs) {
980                                 OPJ_UINT32 i = 0;
981
982                                 while (!opj_tgt_decode(l_bio, l_prc->imsbtree, cblkno, (OPJ_INT32)i)) {
983                                         ++i;
984                                 }
985
986                                 l_cblk->numbps = (OPJ_UINT32)l_band->numbps + 1 - i;
987                                 l_cblk->numlenbits = 3;
988                         }
989
990                         /* number of coding passes */
991                         l_cblk->numnewpasses = opj_t2_getnumpasses(l_bio);
992                         l_increment = opj_t2_getcommacode(l_bio);
993
994                         /* length indicator increment */
995                         l_cblk->numlenbits += l_increment;
996                         l_segno = 0;
997
998                         if (!l_cblk->numsegs) {
999                                 if (! opj_t2_init_seg(l_cblk, l_segno, p_tcp->tccps[p_pi->compno].cblksty, 1)) {
1000                                         opj_bio_destroy(l_bio);
1001                                         return OPJ_FALSE;
1002                                 }
1003                         }
1004                         else {
1005                                 l_segno = l_cblk->numsegs - 1;
1006                                 if (l_cblk->segs[l_segno].numpasses == l_cblk->segs[l_segno].maxpasses) {
1007                                         ++l_segno;
1008                                         if (! opj_t2_init_seg(l_cblk, l_segno, p_tcp->tccps[p_pi->compno].cblksty, 0)) {
1009                                                 opj_bio_destroy(l_bio);
1010                                                 return OPJ_FALSE;
1011                                         }
1012                                 }
1013                         }
1014                         n = (OPJ_INT32)l_cblk->numnewpasses;
1015
1016                         do {
1017                                 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);
1018                                 l_cblk->segs[l_segno].newlen = opj_bio_read(l_bio, l_cblk->numlenbits + opj_uint_floorlog2(l_cblk->segs[l_segno].numnewpasses));
1019                                         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 );
1020
1021                                 n -= (OPJ_INT32)l_cblk->segs[l_segno].numnewpasses;
1022                                 if (n > 0) {
1023                                         ++l_segno;
1024
1025                                         if (! opj_t2_init_seg(l_cblk, l_segno, p_tcp->tccps[p_pi->compno].cblksty, 0)) {
1026                                                 opj_bio_destroy(l_bio);
1027                                                 return OPJ_FALSE;
1028                                         }
1029                                 }
1030                         } while (n > 0);
1031
1032                         ++l_cblk;
1033                 }
1034
1035                 ++l_band;
1036         }
1037
1038         if (!opj_bio_inalign(l_bio)) {
1039                 opj_bio_destroy(l_bio);
1040                 return OPJ_FALSE;
1041         }
1042
1043         l_header_data += opj_bio_numbytes(l_bio);
1044         opj_bio_destroy(l_bio);
1045
1046         /* EPH markers */
1047         if (p_tcp->csty & J2K_CP_CSTY_EPH) {
1048                 if (p_max_length < 2) {
1049                         fprintf(stderr, "Not enough space for expected EPH marker\n");
1050                 } else if ((*l_header_data) != 0xff || (*(l_header_data + 1) != 0x92)) {
1051                         /* TODO opj_event_msg(t2->cinfo->event_mgr, EVT_ERROR, "Expected EPH marker\n"); */
1052                         fprintf(stderr, "Error : expected EPH marker\n");
1053                 } else {
1054                         l_header_data += 2;
1055                 }
1056         }
1057
1058         l_header_length = (OPJ_UINT32)(l_header_data - *l_header_data_start);
1059         JAS_FPRINTF( stderr, "hdrlen=%d \n", l_header_length );
1060         JAS_FPRINTF( stderr, "packet body\n");
1061         *l_modified_length_ptr -= l_header_length;
1062         *l_header_data_start += l_header_length;
1063
1064         /* << INDEX */
1065         /* End of packet header position. Currently only represents the distance to start of packet
1066          Will be updated later by incrementing with packet start value */
1067         if (p_pack_info) {
1068                 p_pack_info->end_ph_pos = (OPJ_INT32)(l_current_data - p_src_data);
1069         }
1070         /* INDEX >> */
1071
1072         *p_is_data_present = OPJ_TRUE;
1073         *p_data_read = (OPJ_UINT32)(l_current_data - p_src_data);
1074
1075         return OPJ_TRUE;
1076 }
1077
1078 OPJ_BOOL opj_t2_read_packet_data(   opj_t2_t* p_t2,
1079                                     opj_tcd_tile_t *p_tile,
1080                                     opj_pi_iterator_t *p_pi,
1081                                     OPJ_BYTE *p_src_data,
1082                                     OPJ_UINT32 * p_data_read,
1083                                     OPJ_UINT32 p_max_length,
1084                                     opj_packet_info_t *pack_info)
1085 {
1086         OPJ_UINT32 bandno, cblkno;
1087         OPJ_UINT32 l_nb_code_blocks;
1088         OPJ_BYTE *l_current_data = p_src_data;
1089         opj_tcd_band_t *l_band = 00;
1090         opj_tcd_cblk_dec_t* l_cblk = 00;
1091         opj_tcd_resolution_t* l_res = &p_tile->comps[p_pi->compno].resolutions[p_pi->resno];
1092
1093         OPJ_ARG_NOT_USED(p_t2);
1094         OPJ_ARG_NOT_USED(pack_info);
1095
1096         l_band = l_res->bands;
1097         for (bandno = 0; bandno < l_res->numbands; ++bandno) {
1098                 opj_tcd_precinct_t *l_prc = &l_band->precincts[p_pi->precno];
1099
1100                 if ((l_band->x1-l_band->x0 == 0)||(l_band->y1-l_band->y0 == 0)) {
1101                         ++l_band;
1102                         continue;
1103                 }
1104
1105                 l_nb_code_blocks = l_prc->cw * l_prc->ch;
1106                 l_cblk = l_prc->cblks.dec;
1107
1108                 for (cblkno = 0; cblkno < l_nb_code_blocks; ++cblkno) {
1109                         opj_tcd_seg_t *l_seg = 00;
1110
1111                         if (!l_cblk->numnewpasses) {
1112                                 /* nothing to do */
1113                                 ++l_cblk;
1114                                 continue;
1115                         }
1116
1117                         if (!l_cblk->numsegs) {
1118                                 l_seg = l_cblk->segs;
1119                                 ++l_cblk->numsegs;
1120                                 l_cblk->data_current_size = 0;
1121                         }
1122                         else {
1123                                 l_seg = &l_cblk->segs[l_cblk->numsegs - 1];
1124
1125                                 if (l_seg->numpasses == l_seg->maxpasses) {
1126                                         ++l_seg;
1127                                         ++l_cblk->numsegs;
1128                                 }
1129                         }
1130
1131                         do {
1132                                 if (l_current_data + l_seg->newlen > p_src_data + p_max_length) {
1133                                         fprintf(stderr, "read: segment too long (%d) with max (%d) for codeblock %d (p=%d, b=%d, r=%d, c=%d)\n",
1134                                                 l_seg->newlen, p_max_length, cblkno, p_pi->precno, bandno, p_pi->resno, p_pi->compno);
1135                                         return OPJ_FALSE;
1136                                 }
1137
1138 #ifdef USE_JPWL
1139                         /* we need here a j2k handle to verify if making a check to
1140                         the validity of cblocks parameters is selected from user (-W) */
1141
1142                                 /* let's check that we are not exceeding */
1143                                 if ((l_cblk->len + l_seg->newlen) > 8192) {
1144                                         opj_event_msg(p_t2->cinfo, EVT_WARNING,
1145                                                 "JPWL: segment too long (%d) for codeblock %d (p=%d, b=%d, r=%d, c=%d)\n",
1146                                                 l_seg->newlen, cblkno, p_pi->precno, bandno, p_pi->resno, p_pi->compno);
1147                                         if (!JPWL_ASSUME) {
1148                                                 opj_event_msg(p_t2->cinfo, EVT_ERROR, "JPWL: giving up\n");
1149                                                 return OPJ_FALSE;
1150                                         }
1151                                         l_seg->newlen = 8192 - l_cblk->len;
1152                                         opj_event_msg(p_t2->cinfo, EVT_WARNING, "      - truncating segment to %d\n", l_seg->newlen);
1153                                         break;
1154                                 };
1155
1156 #endif /* USE_JPWL */
1157                                 /* Check if the cblk->data have allocated enough memory */
1158                                 if ((l_cblk->data_current_size + l_seg->newlen) > l_cblk->data_max_size) {
1159                                     OPJ_BYTE* new_cblk_data = (OPJ_BYTE*) opj_realloc(l_cblk->data, l_cblk->data_current_size + l_seg->newlen);
1160                                     if(! new_cblk_data) {
1161                                         opj_free(l_cblk->data);
1162                                         l_cblk->data_max_size = 0;
1163                                         /* opj_event_msg(p_manager, EVT_ERROR, "Not enough memory to realloc code block cata!\n"); */
1164                                         return OPJ_FALSE;
1165                                     }
1166                                     l_cblk->data_max_size = l_cblk->data_current_size + l_seg->newlen;
1167                                     l_cblk->data = new_cblk_data;
1168                                 }
1169                                
1170                                 memcpy(l_cblk->data + l_cblk->data_current_size, l_current_data, l_seg->newlen);
1171
1172                                 if (l_seg->numpasses == 0) {
1173                                         l_seg->data = &l_cblk->data;
1174                                         l_seg->dataindex = l_cblk->data_current_size;
1175                                 }
1176
1177                                 l_current_data += l_seg->newlen;
1178                                 l_seg->numpasses += l_seg->numnewpasses;
1179                                 l_cblk->numnewpasses -= l_seg->numnewpasses;
1180
1181                                 l_seg->real_num_passes = l_seg->numpasses;
1182                                 l_cblk->data_current_size += l_seg->newlen;
1183                                 l_seg->len += l_seg->newlen;
1184
1185                                 if (l_cblk->numnewpasses > 0) {
1186                                         ++l_seg;
1187                                         ++l_cblk->numsegs;
1188                                 }
1189                         } while (l_cblk->numnewpasses > 0);
1190
1191                         l_cblk->real_num_segs = l_cblk->numsegs;
1192                         ++l_cblk;
1193                 } /* next code_block */
1194
1195                 ++l_band;
1196         }
1197
1198         *(p_data_read) = (OPJ_UINT32)(l_current_data - p_src_data);
1199
1200         return OPJ_TRUE;
1201 }
1202
1203 OPJ_BOOL opj_t2_skip_packet_data(   opj_t2_t* p_t2,
1204                                     opj_tcd_tile_t *p_tile,
1205                                     opj_pi_iterator_t *p_pi,
1206                                     OPJ_UINT32 * p_data_read,
1207                                     OPJ_UINT32 p_max_length,
1208                                     opj_packet_info_t *pack_info)
1209 {
1210         OPJ_UINT32 bandno, cblkno;
1211         OPJ_UINT32 l_nb_code_blocks;
1212         opj_tcd_band_t *l_band = 00;
1213         opj_tcd_cblk_dec_t* l_cblk = 00;
1214         opj_tcd_resolution_t* l_res = &p_tile->comps[p_pi->compno].resolutions[p_pi->resno];
1215
1216         OPJ_ARG_NOT_USED(p_t2);
1217         OPJ_ARG_NOT_USED(pack_info);
1218
1219         *p_data_read = 0;
1220         l_band = l_res->bands;
1221
1222         for (bandno = 0; bandno < l_res->numbands; ++bandno) {
1223                 opj_tcd_precinct_t *l_prc = &l_band->precincts[p_pi->precno];
1224
1225                 if ((l_band->x1-l_band->x0 == 0)||(l_band->y1-l_band->y0 == 0)) {
1226                         ++l_band;
1227                         continue;
1228                 }
1229
1230                 l_nb_code_blocks = l_prc->cw * l_prc->ch;
1231                 l_cblk = l_prc->cblks.dec;
1232
1233                 for (cblkno = 0; cblkno < l_nb_code_blocks; ++cblkno) {
1234                         opj_tcd_seg_t *l_seg = 00;
1235
1236                         if (!l_cblk->numnewpasses) {
1237                                 /* nothing to do */
1238                                 ++l_cblk;
1239                                 continue;
1240                         }
1241
1242                         if (!l_cblk->numsegs) {
1243                                 l_seg = l_cblk->segs;
1244                                 ++l_cblk->numsegs;
1245                                 l_cblk->data_current_size = 0;
1246                         }
1247                         else {
1248                                 l_seg = &l_cblk->segs[l_cblk->numsegs - 1];
1249
1250                                 if (l_seg->numpasses == l_seg->maxpasses) {
1251                                         ++l_seg;
1252                                         ++l_cblk->numsegs;
1253                                 }
1254                         }
1255
1256                         do {
1257                                 if (* p_data_read + l_seg->newlen > p_max_length) {
1258                                         fprintf(stderr, "skip: segment too long (%d) with max (%d) for codeblock %d (p=%d, b=%d, r=%d, c=%d)\n",
1259                                                 l_seg->newlen, p_max_length, cblkno, p_pi->precno, bandno, p_pi->resno, p_pi->compno);
1260                                         return OPJ_FALSE;
1261                                 }
1262
1263 #ifdef USE_JPWL
1264                         /* we need here a j2k handle to verify if making a check to
1265                         the validity of cblocks parameters is selected from user (-W) */
1266
1267                                 /* let's check that we are not exceeding */
1268                                 if ((l_cblk->len + l_seg->newlen) > 8192) {
1269                                         opj_event_msg(p_t2->cinfo, EVT_WARNING,
1270                                                 "JPWL: segment too long (%d) for codeblock %d (p=%d, b=%d, r=%d, c=%d)\n",
1271                                                 l_seg->newlen, cblkno, p_pi->precno, bandno, p_pi->resno, p_pi->compno);
1272                                         if (!JPWL_ASSUME) {
1273                                                 opj_event_msg(p_t2->cinfo, EVT_ERROR, "JPWL: giving up\n");
1274                                                 return -999;
1275                                         }
1276                                         l_seg->newlen = 8192 - l_cblk->len;
1277                                         opj_event_msg(p_t2->cinfo, EVT_WARNING, "      - truncating segment to %d\n", l_seg->newlen);
1278                                         break;
1279                                 };
1280
1281 #endif /* USE_JPWL */
1282                                         JAS_FPRINTF(stderr, "p_data_read (%d) newlen (%d) \n", *p_data_read, l_seg->newlen );
1283                                 *(p_data_read) += l_seg->newlen;
1284
1285                                 l_seg->numpasses += l_seg->numnewpasses;
1286                                 l_cblk->numnewpasses -= l_seg->numnewpasses;
1287                                 if (l_cblk->numnewpasses > 0)
1288                                 {
1289                                         ++l_seg;
1290                                         ++l_cblk->numsegs;
1291                                 }
1292                         } while (l_cblk->numnewpasses > 0);
1293
1294                         ++l_cblk;
1295                 }
1296
1297                 ++l_band;
1298         }
1299
1300         return OPJ_TRUE;
1301 }
1302
1303
1304 OPJ_BOOL opj_t2_init_seg(   opj_tcd_cblk_dec_t* cblk,
1305                             OPJ_UINT32 index, 
1306                             OPJ_UINT32 cblksty, 
1307                             OPJ_UINT32 first)
1308 {
1309         opj_tcd_seg_t* seg = 00;
1310         OPJ_UINT32 l_nb_segs = index + 1;
1311
1312         if (l_nb_segs > cblk->m_current_max_segs) {
1313                 opj_tcd_seg_t* new_segs;
1314                 cblk->m_current_max_segs += OPJ_J2K_DEFAULT_NB_SEGS;
1315
1316                 new_segs = (opj_tcd_seg_t*) opj_realloc(cblk->segs, cblk->m_current_max_segs * sizeof(opj_tcd_seg_t));
1317                 if(! new_segs) {
1318                         opj_free(cblk->segs);
1319                         cblk->segs = NULL;
1320                         cblk->m_current_max_segs = 0;
1321                         /* opj_event_msg(p_manager, EVT_ERROR, "Not enough memory to initialize segment %d\n", l_nb_segs); */
1322                         return OPJ_FALSE;
1323                 }
1324                 cblk->segs = new_segs;
1325         }
1326
1327         seg = &cblk->segs[index];
1328         memset(seg,0,sizeof(opj_tcd_seg_t));
1329
1330         if (cblksty & J2K_CCP_CBLKSTY_TERMALL) {
1331                 seg->maxpasses = 1;
1332         }
1333         else if (cblksty & J2K_CCP_CBLKSTY_LAZY) {
1334                 if (first) {
1335                         seg->maxpasses = 10;
1336                 } else {
1337                         seg->maxpasses = (((seg - 1)->maxpasses == 1) || ((seg - 1)->maxpasses == 10)) ? 2 : 1;
1338                 }
1339         } else {
1340                 seg->maxpasses = 109;
1341         }
1342
1343         return OPJ_TRUE;
1344 }