GLog: Workaround compilation error on Hurd
[blender-staging.git] / extern / libopenjpeg / t2.c
1 /*
2  * Copyright (c) 2002-2007, Communications and Remote Sensing Laboratory, Universite catholique de Louvain (UCL), Belgium
3  * Copyright (c) 2002-2007, Professor Benoit Macq
4  * Copyright (c) 2001-2003, David Janssens
5  * Copyright (c) 2002-2003, Yannick Verschueren
6  * Copyright (c) 2003-2007, Francois-Olivier Devaux and Antonin Descampe
7  * Copyright (c) 2005, Herve Drolon, FreeImage Team
8  * All rights reserved.
9  *
10  * Redistribution and use in source and binary forms, with or without
11  * modification, are permitted provided that the following conditions
12  * are met:
13  * 1. Redistributions of source code must retain the above copyright
14  *    notice, this list of conditions and the following disclaimer.
15  * 2. Redistributions in binary form must reproduce the above copyright
16  *    notice, this list of conditions and the following disclaimer in the
17  *    documentation and/or other materials provided with the distribution.
18  *
19  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS `AS IS'
20  * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
21  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
22  * ARE DISCLAIMED.  IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
23  * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
24  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
25  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
26  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
27  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
28  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
29  * POSSIBILITY OF SUCH DAMAGE.
30  */
31
32 #include "opj_includes.h"
33 #include <assert.h>
34
35 /** @defgroup T2 T2 - Implementation of a tier-2 coding */
36 /*@{*/
37
38 /** @name Local static functions */
39 /*@{*/
40
41 static void t2_putcommacode(opj_bio_t *bio, int n);
42 static int t2_getcommacode(opj_bio_t *bio);
43 /**
44 Variable length code for signalling delta Zil (truncation point)
45 @param bio Bit Input/Output component
46 @param n delta Zil
47 */
48 static void t2_putnumpasses(opj_bio_t *bio, int n);
49 static int t2_getnumpasses(opj_bio_t *bio);
50 /**
51 Encode a packet of a tile to a destination buffer
52 @param tile Tile for which to write the packets
53 @param tcp Tile coding parameters
54 @param pi Packet identity
55 @param dest Destination buffer
56 @param len Length of the destination buffer
57 @param cstr_info Codestream information structure 
58 @param tileno Number of the tile encoded
59 @return 
60 */
61 static int t2_encode_packet(opj_tcd_tile_t *tile, opj_tcp_t *tcp, opj_pi_iterator_t *pi, unsigned char *dest, int len, opj_codestream_info_t *cstr_info, int tileno);
62 /**
63 @param cblk
64 @param index
65 @param cblksty
66 @param first
67 */
68 static opj_bool t2_init_seg(opj_tcd_cblk_dec_t* cblk, int index, int cblksty, int first);
69 /**
70 Decode a packet of a tile from a source buffer
71 @param t2 T2 handle
72 @param src Source buffer
73 @param len Length of the source buffer
74 @param tile Tile for which to write the packets
75 @param tcp Tile coding parameters
76 @param pi Packet identity
77 @param pack_info Packet information
78 @return 
79 */
80 static int t2_decode_packet(opj_t2_t* t2, unsigned char *src, int len, opj_tcd_tile_t *tile, 
81                                                                                                                 opj_tcp_t *tcp, opj_pi_iterator_t *pi, opj_packet_info_t *pack_info);
82
83 /*@}*/
84
85 /*@}*/
86
87 /* ----------------------------------------------------------------------- */
88
89 /* #define RESTART 0x04 */
90
91 static void t2_putcommacode(opj_bio_t *bio, int n) {
92         while (--n >= 0) {
93                 bio_write(bio, 1, 1);
94         }
95         bio_write(bio, 0, 1);
96 }
97
98 static int t2_getcommacode(opj_bio_t *bio) {
99         int n;
100         for (n = 0; bio_read(bio, 1); n++) {
101                 ;
102         }
103         return n;
104 }
105
106 static void t2_putnumpasses(opj_bio_t *bio, int n) {
107         if (n == 1) {
108                 bio_write(bio, 0, 1);
109         } else if (n == 2) {
110                 bio_write(bio, 2, 2);
111         } else if (n <= 5) {
112                 bio_write(bio, 0xc | (n - 3), 4);
113         } else if (n <= 36) {
114                 bio_write(bio, 0x1e0 | (n - 6), 9);
115         } else if (n <= 164) {
116                 bio_write(bio, 0xff80 | (n - 37), 16);
117         }
118 }
119
120 static int t2_getnumpasses(opj_bio_t *bio) {
121         int n;
122         if (!bio_read(bio, 1))
123                 return 1;
124         if (!bio_read(bio, 1))
125                 return 2;
126         if ((n = bio_read(bio, 2)) != 3)
127                 return (3 + n);
128         if ((n = bio_read(bio, 5)) != 31)
129                 return (6 + n);
130         return (37 + bio_read(bio, 7));
131 }
132
133 static int t2_encode_packet(opj_tcd_tile_t * tile, opj_tcp_t * tcp, opj_pi_iterator_t *pi, unsigned char *dest, int length, opj_codestream_info_t *cstr_info, int tileno) {
134         int bandno, cblkno;
135         unsigned char *c = dest;
136
137         int compno = pi->compno;        /* component value */
138         int resno  = pi->resno;         /* resolution level value */
139         int precno = pi->precno;        /* precinct value */
140         int layno  = pi->layno;         /* quality layer value */
141
142         opj_tcd_tilecomp_t *tilec = &tile->comps[compno];
143         opj_tcd_resolution_t *res = &tilec->resolutions[resno];
144         
145         opj_bio_t *bio = NULL;  /* BIO component */
146         
147         /* <SOP 0xff91> */
148         if (tcp->csty & J2K_CP_CSTY_SOP) {
149                 c[0] = 255;
150                 c[1] = 145;
151                 c[2] = 0;
152                 c[3] = 4;
153                 c[4] = (unsigned char)((tile->packno % 65536) / 256);
154                 c[5] = (unsigned char)((tile->packno % 65536) % 256);
155                 c += 6;
156         }
157         /* </SOP> */
158         
159         if (!layno) {
160                 for (bandno = 0; bandno < res->numbands; bandno++) {
161                         opj_tcd_band_t *band = &res->bands[bandno];
162                         opj_tcd_precinct_t *prc = &band->precincts[precno];
163                         tgt_reset(prc->incltree);
164                         tgt_reset(prc->imsbtree);
165                         for (cblkno = 0; cblkno < prc->cw * prc->ch; cblkno++) {
166                                 opj_tcd_cblk_enc_t* cblk = &prc->cblks.enc[cblkno];
167                                 cblk->numpasses = 0;
168                                 tgt_setvalue(prc->imsbtree, cblkno, band->numbps - cblk->numbps);
169                         }
170                 }
171         }
172         
173         bio = bio_create();
174         bio_init_enc(bio, c, length);
175         bio_write(bio, 1, 1);           /* Empty header bit */
176         
177         /* Writing Packet header */
178         for (bandno = 0; bandno < res->numbands; bandno++) {
179                 opj_tcd_band_t *band = &res->bands[bandno];
180                 opj_tcd_precinct_t *prc = &band->precincts[precno];
181                 for (cblkno = 0; cblkno < prc->cw * prc->ch; cblkno++) {
182                         opj_tcd_cblk_enc_t* cblk = &prc->cblks.enc[cblkno];
183                         opj_tcd_layer_t *layer = &cblk->layers[layno];
184                         if (!cblk->numpasses && layer->numpasses) {
185                                 tgt_setvalue(prc->incltree, cblkno, layno);
186                         }
187                 }
188                 for (cblkno = 0; cblkno < prc->cw * prc->ch; cblkno++) {
189                         opj_tcd_cblk_enc_t* cblk = &prc->cblks.enc[cblkno];
190                         opj_tcd_layer_t *layer = &cblk->layers[layno];
191                         int increment = 0;
192                         int nump = 0;
193                         int len = 0, passno;
194                         /* cblk inclusion bits */
195                         if (!cblk->numpasses) {
196                                 tgt_encode(bio, prc->incltree, cblkno, layno + 1);
197                         } else {
198                                 bio_write(bio, layer->numpasses != 0, 1);
199                         }
200                         /* if cblk not included, go to the next cblk  */
201                         if (!layer->numpasses) {
202                                 continue;
203                         }
204                         /* if first instance of cblk --> zero bit-planes information */
205                         if (!cblk->numpasses) {
206                                 cblk->numlenbits = 3;
207                                 tgt_encode(bio, prc->imsbtree, cblkno, 999);
208                         }
209                         /* number of coding passes included */
210                         t2_putnumpasses(bio, layer->numpasses);
211                         
212                         /* computation of the increase of the length indicator and insertion in the header     */
213                         for (passno = cblk->numpasses; passno < cblk->numpasses + layer->numpasses; passno++) {
214                                 opj_tcd_pass_t *pass = &cblk->passes[passno];
215                                 nump++;
216                                 len += pass->len;
217                                 if (pass->term || passno == (cblk->numpasses + layer->numpasses) - 1) {
218                                         increment = int_max(increment, int_floorlog2(len) + 1 - (cblk->numlenbits + int_floorlog2(nump)));
219                                         len = 0;
220                                         nump = 0;
221                                 }
222                         }
223                         t2_putcommacode(bio, increment);
224
225                         /* computation of the new Length indicator */
226                         cblk->numlenbits += increment;
227
228                         /* insertion of the codeword segment length */
229                         for (passno = cblk->numpasses; passno < cblk->numpasses + layer->numpasses; passno++) {
230                                 opj_tcd_pass_t *pass = &cblk->passes[passno];
231                                 nump++;
232                                 len += pass->len;
233                                 if (pass->term || passno == (cblk->numpasses + layer->numpasses) - 1) {
234                                         bio_write(bio, len, cblk->numlenbits + int_floorlog2(nump));
235                                         len = 0;
236                                         nump = 0;
237                                 }
238                         }
239                 }
240         }
241
242         if (bio_flush(bio)) {
243                 bio_destroy(bio);
244                 return -999;            /* modified to eliminate longjmp !! */
245         }
246
247         c += bio_numbytes(bio);
248         bio_destroy(bio);
249         
250         /* <EPH 0xff92> */
251         if (tcp->csty & J2K_CP_CSTY_EPH) {
252                 c[0] = 255;
253                 c[1] = 146;
254                 c += 2;
255         }
256         /* </EPH> */
257
258         /* << INDEX */
259         /* End of packet header position. Currently only represents the distance to start of packet
260         // Will be updated later by incrementing with packet start value */
261         if(cstr_info && cstr_info->index_write) {
262                 opj_packet_info_t *info_PK = &cstr_info->tile[tileno].packet[cstr_info->packno];
263                 info_PK->end_ph_pos = (int)(c - dest);
264         }
265         /* INDEX >> */
266         
267         /* Writing the packet body */
268         
269         for (bandno = 0; bandno < res->numbands; bandno++) {
270                 opj_tcd_band_t *band = &res->bands[bandno];
271                 opj_tcd_precinct_t *prc = &band->precincts[precno];
272                 for (cblkno = 0; cblkno < prc->cw * prc->ch; cblkno++) {
273                         opj_tcd_cblk_enc_t* cblk = &prc->cblks.enc[cblkno];
274                         opj_tcd_layer_t *layer = &cblk->layers[layno];
275                         if (!layer->numpasses) {
276                                 continue;
277                         }
278                         if (c + layer->len > dest + length) {
279                                 return -999;
280                         }
281                         
282                         memcpy(c, layer->data, layer->len);
283                         cblk->numpasses += layer->numpasses;
284                         c += layer->len;
285                         /* << INDEX */ 
286                         if(cstr_info && cstr_info->index_write) {
287                                 opj_packet_info_t *info_PK = &cstr_info->tile[tileno].packet[cstr_info->packno];
288                                 info_PK->disto += layer->disto;
289                                 if (cstr_info->D_max < info_PK->disto) {
290                                         cstr_info->D_max = info_PK->disto;
291                                 }
292                         }
293                         /* INDEX >> */
294                 }
295         }
296         
297         return (c - dest);
298 }
299
300 static opj_bool t2_init_seg(opj_tcd_cblk_dec_t* cblk, int index, int cblksty, int first) {
301         opj_tcd_seg_t* seg;
302     opj_tcd_seg_t* segs;
303     segs = (opj_tcd_seg_t*) opj_realloc(cblk->segs, (index + 1) * sizeof(opj_tcd_seg_t));
304
305     if (segs == NULL)
306     {
307         return OPJ_FALSE;
308     }
309     cblk->segs = segs;
310
311         seg = &cblk->segs[index];
312         seg->data = NULL;
313         seg->dataindex = 0;
314         seg->numpasses = 0;
315         seg->len = 0;
316         if (cblksty & J2K_CCP_CBLKSTY_TERMALL) {
317                 seg->maxpasses = 1;
318         }
319         else if (cblksty & J2K_CCP_CBLKSTY_LAZY) {
320                 if (first) {
321                         seg->maxpasses = 10;
322                 } else {
323                         seg->maxpasses = (((seg - 1)->maxpasses == 1) || ((seg - 1)->maxpasses == 10)) ? 2 : 1;
324                 }
325         } else {
326                 seg->maxpasses = 109;
327         }
328
329     return OPJ_TRUE;
330 }
331
332 static int t2_decode_packet(opj_t2_t* t2, unsigned char *src, int len, opj_tcd_tile_t *tile, 
333                                                                                                                 opj_tcp_t *tcp, opj_pi_iterator_t *pi, opj_packet_info_t *pack_info) {
334         int bandno, cblkno;
335         unsigned char *c = src;
336
337         opj_cp_t *cp = t2->cp;
338
339         int compno = pi->compno;        /* component value */
340         int resno  = pi->resno;         /* resolution level value */
341         int precno = pi->precno;        /* precinct value */
342         int layno  = pi->layno;         /* quality layer value */
343
344         unsigned char *hd = NULL;
345         int present;
346         
347         opj_bio_t *bio = NULL;  /* BIO component */
348
349         opj_tcd_resolution_t* res;
350         assert(&tile->comps[compno] != NULL);
351         res = &tile->comps[compno].resolutions[resno];
352
353         if (layno == 0) {
354                 for (bandno = 0; bandno < res->numbands; bandno++) {
355                         opj_tcd_band_t *band = &res->bands[bandno];
356                         opj_tcd_precinct_t *prc = &band->precincts[precno];
357                         
358                         if ((band->x1-band->x0 == 0)||(band->y1-band->y0 == 0)) continue;
359                         
360                         tgt_reset(prc->incltree);
361                         tgt_reset(prc->imsbtree);
362                         for (cblkno = 0; cblkno < prc->cw * prc->ch; cblkno++) {
363                                 opj_tcd_cblk_dec_t* cblk = &prc->cblks.dec[cblkno];
364                                 cblk->numsegs = 0;
365                         }
366                 }
367         }
368         
369         /* SOP markers */
370         
371         if (tcp->csty & J2K_CP_CSTY_SOP) {
372                 if ((*c) != 0xff || (*(c + 1) != 0x91)) {
373                         opj_event_msg(t2->cinfo, EVT_WARNING, "Expected SOP marker\n");
374                 } else {
375                         c += 6;
376                 }
377                 
378                 /** TODO : check the Nsop value */
379         }
380         
381         /* 
382         When the marker PPT/PPM is used the packet header are store in PPT/PPM marker
383         This part deal with this caracteristic
384         step 1: Read packet header in the saved structure
385         step 2: Return to codestream for decoding 
386         */
387
388         bio = bio_create();
389         
390         if (cp->ppm == 1) {             /* PPM */
391                 hd = cp->ppm_data;
392                 bio_init_dec(bio, hd, cp->ppm_len);
393         } else if (tcp->ppt == 1) {     /* PPT */
394                 hd = tcp->ppt_data;
395                 bio_init_dec(bio, hd, tcp->ppt_len);
396         } else {                        /* Normal Case */
397                 hd = c;
398                 bio_init_dec(bio, hd, src+len-hd);
399         }
400         
401         present = bio_read(bio, 1);
402         
403         if (!present) {
404                 bio_inalign(bio);
405                 hd += bio_numbytes(bio);
406                 bio_destroy(bio);
407                 
408                 /* EPH markers */
409                 
410                 if (tcp->csty & J2K_CP_CSTY_EPH) {
411                         if ((*hd) != 0xff || (*(hd + 1) != 0x92)) {
412                                 printf("Error : expected EPH marker\n");
413                         } else {
414                                 hd += 2;
415                         }
416                 }
417
418                 /* << INDEX */
419                 /* End of packet header position. Currently only represents the distance to start of packet
420                 // Will be updated later by incrementing with packet start value*/
421                 if(pack_info) {
422                         pack_info->end_ph_pos = (int)(c - src);
423                 }
424                 /* INDEX >> */
425                 
426                 if (cp->ppm == 1) {             /* PPM case */
427                         cp->ppm_len += cp->ppm_data-hd;
428                         cp->ppm_data = hd;
429                         return (c - src);
430                 }
431                 if (tcp->ppt == 1) {    /* PPT case */
432                         tcp->ppt_len+=tcp->ppt_data-hd;
433                         tcp->ppt_data = hd;
434                         return (c - src);
435                 }
436                 
437                 return (hd - src);
438         }
439         
440         for (bandno = 0; bandno < res->numbands; bandno++) {
441                 opj_tcd_band_t *band = &res->bands[bandno];
442                 opj_tcd_precinct_t *prc = &band->precincts[precno];
443                 
444                 if ((band->x1-band->x0 == 0)||(band->y1-band->y0 == 0)) continue;
445                 
446                 for (cblkno = 0; cblkno < prc->cw * prc->ch; cblkno++) {
447                         int included, increment, n, segno;
448                         opj_tcd_cblk_dec_t* cblk = &prc->cblks.dec[cblkno];
449                         /* if cblk not yet included before --> inclusion tagtree */
450                         if (!cblk->numsegs) {
451                                 included = tgt_decode(bio, prc->incltree, cblkno, layno + 1);
452                                 /* else one bit */
453                         } else {
454                                 included = bio_read(bio, 1);
455                         }
456                         /* if cblk not included */
457                         if (!included) {
458                                 cblk->numnewpasses = 0;
459                                 continue;
460                         }
461                         /* if cblk not yet included --> zero-bitplane tagtree */
462                         if (!cblk->numsegs) {
463                                 int i, numimsbs;
464                                 for (i = 0; !tgt_decode(bio, prc->imsbtree, cblkno, i); i++) {
465                                         ;
466                                 }
467                                 numimsbs = i - 1;
468                                 cblk->numbps = band->numbps - numimsbs;
469                                 cblk->numlenbits = 3;
470                         }
471                         /* number of coding passes */
472                         cblk->numnewpasses = t2_getnumpasses(bio);
473                         increment = t2_getcommacode(bio);
474                         /* length indicator increment */
475                         cblk->numlenbits += increment;
476                         segno = 0;
477                         if (!cblk->numsegs) {
478                 if (!t2_init_seg(cblk, segno, tcp->tccps[compno].cblksty, 1))
479                 {
480                     opj_event_msg(t2->cinfo, EVT_ERROR, "Out of memory\n");
481                     bio_destroy(bio);
482                     return -999;
483                 }
484                         } else {
485                                 segno = cblk->numsegs - 1;
486                                 if (cblk->segs[segno].numpasses == cblk->segs[segno].maxpasses) {
487                                         ++segno;
488                     if (!t2_init_seg(cblk, segno, tcp->tccps[compno].cblksty, 0))
489                     {
490                         opj_event_msg(t2->cinfo, EVT_ERROR, "Out of memory\n");
491                         bio_destroy(bio);
492                         return -999;
493                     }
494                                 }
495                         }
496                         n = cblk->numnewpasses;
497                         
498                         do {
499                                 cblk->segs[segno].numnewpasses = int_min(cblk->segs[segno].maxpasses - cblk->segs[segno].numpasses, n);
500                                 cblk->segs[segno].newlen = bio_read(bio, cblk->numlenbits + int_floorlog2(cblk->segs[segno].numnewpasses));
501                                 n -= cblk->segs[segno].numnewpasses;
502                                 if (n > 0) {
503                                         ++segno;
504                     if (!t2_init_seg(cblk, segno, tcp->tccps[compno].cblksty, 0))
505                     {
506                         opj_event_msg(t2->cinfo, EVT_ERROR, "Out of memory\n");
507                         bio_destroy(bio);
508                         return -999;
509                     }
510                                 }
511                         } while (n > 0);
512                 }
513         }
514         
515         if (bio_inalign(bio)) {
516                 bio_destroy(bio);
517                 return -999;
518         }
519         
520         hd += bio_numbytes(bio);
521         bio_destroy(bio);
522         
523         /* EPH markers */
524         if (tcp->csty & J2K_CP_CSTY_EPH) {
525                 if ((*hd) != 0xff || (*(hd + 1) != 0x92)) {
526                         opj_event_msg(t2->cinfo, EVT_ERROR, "Expected EPH marker\n");
527                         return -999;
528                 } else {
529                         hd += 2;
530                 }
531         }
532
533         /* << INDEX */
534         /* End of packet header position. Currently only represents the distance to start of packet
535         // Will be updated later by incrementing with packet start value*/
536         if(pack_info) {
537                 pack_info->end_ph_pos = (int)(hd - src);
538         }
539         /* INDEX >> */
540         
541         if (cp->ppm==1) {
542                 cp->ppm_len+=cp->ppm_data-hd;
543                 cp->ppm_data = hd;
544         } else if (tcp->ppt == 1) {
545                 tcp->ppt_len+=tcp->ppt_data-hd;
546                 tcp->ppt_data = hd;
547         } else {
548                 c=hd;
549         }
550         
551         for (bandno = 0; bandno < res->numbands; bandno++) {
552                 opj_tcd_band_t *band = &res->bands[bandno];
553                 opj_tcd_precinct_t *prc = &band->precincts[precno];
554                 
555                 if ((band->x1-band->x0 == 0)||(band->y1-band->y0 == 0)) continue;
556                 
557                 for (cblkno = 0; cblkno < prc->cw * prc->ch; cblkno++) {
558                         opj_tcd_cblk_dec_t* cblk = &prc->cblks.dec[cblkno];
559                         opj_tcd_seg_t *seg = NULL;
560                         if (!cblk->numnewpasses)
561                                 continue;
562                         if (!cblk->numsegs) {
563                                 seg = &cblk->segs[0];
564                                 cblk->numsegs++;
565                                 cblk->len = 0;
566                         } else {
567                                 seg = &cblk->segs[cblk->numsegs - 1];
568                                 if (seg->numpasses == seg->maxpasses) {
569                                         seg++;
570                                         cblk->numsegs++;
571                                 }
572                         }
573                         
574                         do {
575                                 if (c + seg->newlen > src + len) {
576                                         return -999;
577                                 }
578
579 #ifdef USE_JPWL
580                         /* we need here a j2k handle to verify if making a check to
581                         the validity of cblocks parameters is selected from user (-W) */
582
583                                 /* let's check that we are not exceeding */
584                                 if ((cblk->len + seg->newlen) > 8192) {
585                                         opj_event_msg(t2->cinfo, EVT_WARNING,
586                                                 "JPWL: segment too long (%d) for codeblock %d (p=%d, b=%d, r=%d, c=%d)\n",
587                                                 seg->newlen, cblkno, precno, bandno, resno, compno);
588                                         if (!JPWL_ASSUME) {
589                                                 opj_event_msg(t2->cinfo, EVT_ERROR, "JPWL: giving up\n");
590                                                 return -999;
591                                         }
592                                         seg->newlen = 8192 - cblk->len;
593                                         opj_event_msg(t2->cinfo, EVT_WARNING, "      - truncating segment to %d\n", seg->newlen);
594                                         break;
595                                 };
596
597 #endif /* USE_JPWL */
598                                 
599                                 cblk->data = (unsigned char*) opj_realloc(cblk->data, (cblk->len + seg->newlen) * sizeof(unsigned char));
600                                 memcpy(cblk->data + cblk->len, c, seg->newlen);
601                                 if (seg->numpasses == 0) {
602                                         seg->data = &cblk->data;
603                                         seg->dataindex = cblk->len;
604                                 }
605                                 c += seg->newlen;
606                                 cblk->len += seg->newlen;
607                                 seg->len += seg->newlen;
608                                 seg->numpasses += seg->numnewpasses;
609                                 cblk->numnewpasses -= seg->numnewpasses;
610                                 if (cblk->numnewpasses > 0) {
611                                         seg++;
612                                         cblk->numsegs++;
613                                 }
614                         } while (cblk->numnewpasses > 0);
615                 }
616         }
617         
618         return (c - src);
619 }
620
621 /* ----------------------------------------------------------------------- */
622
623 int t2_encode_packets(opj_t2_t* t2,int tileno, opj_tcd_tile_t *tile, int maxlayers, unsigned char *dest, int len, opj_codestream_info_t *cstr_info,int tpnum, int tppos,int pino, J2K_T2_MODE t2_mode, int cur_totnum_tp){
624         unsigned char *c = dest;
625         int e = 0;
626         int compno;
627         opj_pi_iterator_t *pi = NULL;
628         int poc;
629         opj_image_t *image = t2->image;
630         opj_cp_t *cp = t2->cp;
631         opj_tcp_t *tcp = &cp->tcps[tileno];
632         int pocno = cp->cinema == CINEMA4K_24? 2: 1;
633         int maxcomp = cp->max_comp_size > 0 ? image->numcomps : 1;
634         
635         pi = pi_initialise_encode(image, cp, tileno, t2_mode);
636         if(!pi) {
637                 /* TODO: throw an error */
638                 return -999;
639         }
640         
641         if(t2_mode == THRESH_CALC ){ /* Calculating threshold */
642                 for(compno = 0; compno < maxcomp; compno++ ){
643                         for(poc = 0; poc < pocno ; poc++){
644                                 int comp_len = 0;
645                                 int tpnum = compno;
646                                 if (pi_create_encode(pi, cp,tileno,poc,tpnum,tppos,t2_mode,cur_totnum_tp)) {
647                                         opj_event_msg(t2->cinfo, EVT_ERROR, "Error initializing Packet Iterator\n");
648                                         pi_destroy(pi, cp, tileno);
649                                         return -999;
650                                 }
651                                 while (pi_next(&pi[poc])) {
652                                         if (pi[poc].layno < maxlayers) {
653                                                 e = t2_encode_packet(tile, &cp->tcps[tileno], &pi[poc], c, dest + len - c, cstr_info, tileno);
654                                                 comp_len = comp_len + e;
655                                                 if (e == -999) {
656                                                         break;
657                                                 } else {
658                                                         c += e;
659                                                 }
660                                         }
661                                 }
662                                 if (e == -999) break;
663                                 if (cp->max_comp_size){
664                                         if (comp_len > cp->max_comp_size){
665                                                 e = -999;
666                                                 break;
667                                         }
668                                 }
669                         }
670                         if (e == -999)  break;
671                 }
672         }else{  /* t2_mode == FINAL_PASS  */
673                 pi_create_encode(pi, cp,tileno,pino,tpnum,tppos,t2_mode,cur_totnum_tp);
674                 while (pi_next(&pi[pino])) {
675                         if (pi[pino].layno < maxlayers) {
676                                 e = t2_encode_packet(tile, &cp->tcps[tileno], &pi[pino], c, dest + len - c, cstr_info, tileno);
677                                 if (e == -999) {
678                                         break;
679                                 } else {
680                                         c += e;
681                                 }
682                                 /* INDEX >> */
683                                 if(cstr_info) {
684                                         if(cstr_info->index_write) {
685                                                 opj_tile_info_t *info_TL = &cstr_info->tile[tileno];
686                                                 opj_packet_info_t *info_PK = &info_TL->packet[cstr_info->packno];
687                                                 if (!cstr_info->packno) {
688                                                         info_PK->start_pos = info_TL->end_header + 1;
689                                                 } else {
690                                                         info_PK->start_pos = ((cp->tp_on | tcp->POC)&& info_PK->start_pos) ? info_PK->start_pos : info_TL->packet[cstr_info->packno - 1].end_pos + 1;
691                                                 }
692                                                 info_PK->end_pos = info_PK->start_pos + e - 1;
693                                                 info_PK->end_ph_pos += info_PK->start_pos - 1;  /* End of packet header which now only represents the distance 
694                                                                                                                                                                                                                                                 // to start of packet is incremented by value of start of packet*/
695                                         }
696                                         
697                                         cstr_info->packno++;
698                                 }
699                                 /* << INDEX */
700                                 tile->packno++;
701                         }
702                 }
703         }
704         
705         pi_destroy(pi, cp, tileno);
706         
707         if (e == -999) {
708                 return e;
709         }
710         
711   return (c - dest);
712 }
713
714 int t2_decode_packets(opj_t2_t *t2, unsigned char *src, int len, int tileno, opj_tcd_tile_t *tile, opj_codestream_info_t *cstr_info) {
715         unsigned char *c = src;
716         opj_pi_iterator_t *pi;
717         int pino, e = 0;
718         int n = 0, curtp = 0;
719         int tp_start_packno;
720
721         opj_image_t *image = t2->image;
722         opj_cp_t *cp = t2->cp;
723         
724         /* create a packet iterator */
725         pi = pi_create_decode(image, cp, tileno);
726         if(!pi) {
727                 /* TODO: throw an error */
728                 return -999;
729         }
730
731         tp_start_packno = 0;
732         
733         for (pino = 0; pino <= cp->tcps[tileno].numpocs; pino++) {
734                 while (pi_next(&pi[pino])) {
735                         if ((cp->layer==0) || (cp->layer>=((pi[pino].layno)+1))) {
736                                 opj_packet_info_t *pack_info;
737                                 if (cstr_info)
738                                         pack_info = &cstr_info->tile[tileno].packet[cstr_info->packno];
739                                 else
740                                         pack_info = NULL;
741                                 e = t2_decode_packet(t2, c, src + len - c, tile, &cp->tcps[tileno], &pi[pino], pack_info);
742                         } else {
743                                 e = 0;
744                         }
745             if(e == -999)
746             {
747                 pi_destroy(pi, cp, tileno);
748                 return -999;
749             }
750                         /* progression in resolution */
751                         image->comps[pi[pino].compno].resno_decoded =   
752                                 (e > 0) ? 
753                                 int_max(pi[pino].resno, image->comps[pi[pino].compno].resno_decoded) 
754                                 : image->comps[pi[pino].compno].resno_decoded;
755                         n++;
756
757                         /* INDEX >> */
758                         if(cstr_info) {
759                                 opj_tile_info_t *info_TL = &cstr_info->tile[tileno];
760                                 opj_packet_info_t *info_PK = &info_TL->packet[cstr_info->packno];
761                                 if (!cstr_info->packno) {
762                                         info_PK->start_pos = info_TL->end_header + 1;
763                                 } else if (info_TL->packet[cstr_info->packno-1].end_pos >= (int)cstr_info->tile[tileno].tp[curtp].tp_end_pos){ /* New tile part*/
764                                         info_TL->tp[curtp].tp_numpacks = cstr_info->packno - tp_start_packno; /* Number of packets in previous tile-part*/
765           info_TL->tp[curtp].tp_start_pack = tp_start_packno;
766                                         tp_start_packno = cstr_info->packno;
767                                         curtp++;
768                                         info_PK->start_pos = cstr_info->tile[tileno].tp[curtp].tp_end_header+1;
769                                 } else {
770                                         info_PK->start_pos = (cp->tp_on && info_PK->start_pos) ? info_PK->start_pos : info_TL->packet[cstr_info->packno - 1].end_pos + 1;
771                                 }
772                                 info_PK->end_pos = info_PK->start_pos + e - 1;
773                                 info_PK->end_ph_pos += info_PK->start_pos - 1;  /* End of packet header which now only represents the distance 
774                                                                                                                                                                                                                                 // to start of packet is incremented by value of start of packet*/
775                                 cstr_info->packno++;
776                         }
777                         /* << INDEX */
778                         
779                         if (e == -999) {                /* ADD */
780                                 break;
781                         } else {
782                                 c += e;
783                         }                       
784                 }
785         }
786         /* INDEX >> */
787         if(cstr_info) {
788                 cstr_info->tile[tileno].tp[curtp].tp_numpacks = cstr_info->packno - tp_start_packno; /* Number of packets in last tile-part*/
789     cstr_info->tile[tileno].tp[curtp].tp_start_pack = tp_start_packno;
790         }
791         /* << INDEX */
792
793         /* don't forget to release pi */
794         pi_destroy(pi, cp, tileno);
795         
796         if (e == -999) {
797                 return e;
798         }
799         
800         return (c - src);
801 }
802
803 /* ----------------------------------------------------------------------- */
804
805 opj_t2_t* t2_create(opj_common_ptr cinfo, opj_image_t *image, opj_cp_t *cp) {
806         /* create the tcd structure */
807         opj_t2_t *t2 = (opj_t2_t*)opj_malloc(sizeof(opj_t2_t));
808         if(!t2) return NULL;
809         t2->cinfo = cinfo;
810         t2->image = image;
811         t2->cp = cp;
812
813         return t2;
814 }
815
816 void t2_destroy(opj_t2_t *t2) {
817         if(t2) {
818                 opj_free(t2);
819         }
820 }
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