2 * Copyright (c) 2002-2007, Communications and Remote Sensing Laboratory, Universite catholique de Louvain (UCL), Belgium
3 * Copyright (c) 2002-2007, Professor Benoit Macq
4 * Copyright (c) 2001-2003, David Janssens
5 * Copyright (c) 2002-2003, Yannick Verschueren
6 * Copyright (c) 2003-2007, Francois-Olivier Devaux and Antonin Descampe
7 * Copyright (c) 2005, Herve Drolon, FreeImage Team
8 * Copyright (c) 2008;2011-2012, Centre National d'Etudes Spatiales (CNES), France
9 * Copyright (c) 2012, CS Systemes d'Information, France
10 * All rights reserved.
12 * Redistribution and use in source and binary forms, with or without
13 * modification, are permitted provided that the following conditions
15 * 1. Redistributions of source code must retain the above copyright
16 * notice, this list of conditions and the following disclaimer.
17 * 2. Redistributions in binary form must reproduce the above copyright
18 * notice, this list of conditions and the following disclaimer in the
19 * documentation and/or other materials provided with the distribution.
21 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS `AS IS'
22 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
23 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
24 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
25 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
26 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
27 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
28 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
29 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
30 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
31 * POSSIBILITY OF SUCH DAMAGE.
34 #include "opj_includes.h"
36 /** @defgroup T2 T2 - Implementation of a tier-2 coding */
39 /** @name Local static functions */
42 static void opj_t2_putcommacode(opj_bio_t *bio, OPJ_INT32 n);
44 static OPJ_UINT32 opj_t2_getcommacode(opj_bio_t *bio);
46 Variable length code for signalling delta Zil (truncation point)
47 @param bio Bit Input/Output component
50 static void opj_t2_putnumpasses(opj_bio_t *bio, OPJ_UINT32 n);
51 static OPJ_UINT32 opj_t2_getnumpasses(opj_bio_t *bio);
54 Encode a packet of a tile to a destination buffer
55 @param tileno Number of the tile encoded
56 @param tile Tile for which to write the packets
57 @param tcp Tile coding parameters
58 @param pi Packet identity
59 @param dest Destination buffer
60 @param p_data_written FIXME DOC
61 @param len Length of the destination buffer
62 @param cstr_info Codestream information structure
65 static OPJ_BOOL opj_t2_encode_packet( OPJ_UINT32 tileno,
68 opj_pi_iterator_t *pi,
70 OPJ_UINT32 * p_data_written,
72 opj_codestream_info_t *cstr_info);
75 Decode a packet of a tile from a source buffer
77 @param tile Tile for which to write the packets
78 @param tcp Tile coding parameters
79 @param pi Packet identity
80 @param src Source buffer
81 @param data_read FIXME DOC
82 @param max_length FIXME DOC
83 @param pack_info Packet information
87 static OPJ_BOOL opj_t2_decode_packet( opj_t2_t* t2,
90 opj_pi_iterator_t *pi,
92 OPJ_UINT32 * data_read,
93 OPJ_UINT32 max_length,
94 opj_packet_info_t *pack_info);
96 static OPJ_BOOL opj_t2_skip_packet( opj_t2_t* p_t2,
97 opj_tcd_tile_t *p_tile,
99 opj_pi_iterator_t *p_pi,
101 OPJ_UINT32 * p_data_read,
102 OPJ_UINT32 p_max_length,
103 opj_packet_info_t *p_pack_info);
105 static OPJ_BOOL opj_t2_read_packet_header( opj_t2_t* p_t2,
106 opj_tcd_tile_t *p_tile,
108 opj_pi_iterator_t *p_pi,
109 OPJ_BOOL * p_is_data_present,
110 OPJ_BYTE *p_src_data,
111 OPJ_UINT32 * p_data_read,
112 OPJ_UINT32 p_max_length,
113 opj_packet_info_t *p_pack_info);
115 static OPJ_BOOL opj_t2_read_packet_data(opj_t2_t* p_t2,
116 opj_tcd_tile_t *p_tile,
117 opj_pi_iterator_t *p_pi,
118 OPJ_BYTE *p_src_data,
119 OPJ_UINT32 * p_data_read,
120 OPJ_UINT32 p_max_length,
121 opj_packet_info_t *pack_info);
123 static OPJ_BOOL opj_t2_skip_packet_data(opj_t2_t* p_t2,
124 opj_tcd_tile_t *p_tile,
125 opj_pi_iterator_t *p_pi,
126 OPJ_UINT32 * p_data_read,
127 OPJ_UINT32 p_max_length,
128 opj_packet_info_t *pack_info);
136 static OPJ_BOOL opj_t2_init_seg( opj_tcd_cblk_dec_t* cblk,
145 /* ----------------------------------------------------------------------- */
147 /* #define RESTART 0x04 */
148 static void opj_t2_putcommacode(opj_bio_t *bio, OPJ_INT32 n) {
150 opj_bio_write(bio, 1, 1);
152 opj_bio_write(bio, 0, 1);
155 OPJ_UINT32 opj_t2_getcommacode(opj_bio_t *bio)
158 while (opj_bio_read(bio, 1)) {
164 void opj_t2_putnumpasses(opj_bio_t *bio, OPJ_UINT32 n) {
166 opj_bio_write(bio, 0, 1);
168 opj_bio_write(bio, 2, 2);
170 opj_bio_write(bio, 0xc | (n - 3), 4);
171 } else if (n <= 36) {
172 opj_bio_write(bio, 0x1e0 | (n - 6), 9);
173 } else if (n <= 164) {
174 opj_bio_write(bio, 0xff80 | (n - 37), 16);
178 OPJ_UINT32 opj_t2_getnumpasses(opj_bio_t *bio) {
180 if (!opj_bio_read(bio, 1))
182 if (!opj_bio_read(bio, 1))
184 if ((n = opj_bio_read(bio, 2)) != 3)
186 if ((n = opj_bio_read(bio, 5)) != 31)
188 return (37 + opj_bio_read(bio, 7));
191 /* ----------------------------------------------------------------------- */
193 OPJ_BOOL opj_t2_encode_packets( opj_t2_t* p_t2,
194 OPJ_UINT32 p_tile_no,
195 opj_tcd_tile_t *p_tile,
196 OPJ_UINT32 p_maxlayers,
198 OPJ_UINT32 * p_data_written,
199 OPJ_UINT32 p_max_len,
200 opj_codestream_info_t *cstr_info,
204 J2K_T2_MODE p_t2_mode)
206 OPJ_BYTE *l_current_data = p_dest;
207 OPJ_UINT32 l_nb_bytes = 0;
210 opj_pi_iterator_t *l_pi = 00;
211 opj_pi_iterator_t *l_current_pi = 00;
212 opj_image_t *l_image = p_t2->image;
213 opj_cp_t *l_cp = p_t2->cp;
214 opj_tcp_t *l_tcp = &l_cp->tcps[p_tile_no];
215 OPJ_UINT32 pocno = l_cp->m_specific_param.m_enc.m_cinema == OPJ_CINEMA4K_24? 2: 1;
216 OPJ_UINT32 l_max_comp = l_cp->m_specific_param.m_enc.m_max_comp_size > 0 ? l_image->numcomps : 1;
217 OPJ_UINT32 l_nb_pocs = l_tcp->numpocs + 1;
219 l_pi = opj_pi_initialise_encode(l_image, l_cp, p_tile_no, p_t2_mode);
224 * p_data_written = 0;
226 if (p_t2_mode == THRESH_CALC ){ /* Calculating threshold */
229 for (compno = 0; compno < l_max_comp; ++compno) {
230 OPJ_UINT32 l_comp_len = 0;
233 for (poc = 0; poc < pocno ; ++poc) {
234 OPJ_UINT32 l_tp_num = compno;
236 /* TODO MSD : check why this function cannot fail (cf. v1) */
237 opj_pi_create_encode(l_pi, l_cp,p_tile_no,poc,l_tp_num,p_tp_pos,p_t2_mode);
239 while (opj_pi_next(l_current_pi)) {
240 if (l_current_pi->layno < p_maxlayers) {
243 if (! opj_t2_encode_packet(p_tile_no,p_tile, l_tcp, l_current_pi, l_current_data, &l_nb_bytes, p_max_len, cstr_info)) {
244 opj_pi_destroy(l_pi, l_nb_pocs);
248 l_comp_len += l_nb_bytes;
249 l_current_data += l_nb_bytes;
250 p_max_len -= l_nb_bytes;
252 * p_data_written += l_nb_bytes;
256 if (l_cp->m_specific_param.m_enc.m_max_comp_size) {
257 if (l_comp_len > l_cp->m_specific_param.m_enc.m_max_comp_size) {
258 opj_pi_destroy(l_pi, l_nb_pocs);
267 else { /* t2_mode == FINAL_PASS */
268 opj_pi_create_encode(l_pi, l_cp,p_tile_no,p_pino,p_tp_num,p_tp_pos,p_t2_mode);
270 l_current_pi = &l_pi[p_pino];
272 while (opj_pi_next(l_current_pi)) {
273 if (l_current_pi->layno < p_maxlayers) {
276 if (! opj_t2_encode_packet(p_tile_no,p_tile, l_tcp, l_current_pi, l_current_data, &l_nb_bytes, p_max_len, cstr_info)) {
277 opj_pi_destroy(l_pi, l_nb_pocs);
281 l_current_data += l_nb_bytes;
282 p_max_len -= l_nb_bytes;
284 * p_data_written += l_nb_bytes;
288 if(cstr_info->index_write) {
289 opj_tile_info_t *info_TL = &cstr_info->tile[p_tile_no];
290 opj_packet_info_t *info_PK = &info_TL->packet[cstr_info->packno];
291 if (!cstr_info->packno) {
292 info_PK->start_pos = info_TL->end_header + 1;
294 info_PK->start_pos = ((l_cp->m_specific_param.m_enc.m_tp_on | l_tcp->POC)&& info_PK->start_pos) ? info_PK->start_pos : info_TL->packet[cstr_info->packno - 1].end_pos + 1;
296 info_PK->end_pos = info_PK->start_pos + l_nb_bytes - 1;
297 info_PK->end_ph_pos += info_PK->start_pos - 1; /* End of packet header which now only represents the distance
298 to start of packet is incremented by value of start of packet*/
309 opj_pi_destroy(l_pi, l_nb_pocs);
314 OPJ_BOOL opj_t2_decode_packets( opj_t2_t *p_t2,
315 OPJ_UINT32 p_tile_no,
316 opj_tcd_tile_t *p_tile,
318 OPJ_UINT32 * p_data_read,
319 OPJ_UINT32 p_max_len,
320 opj_codestream_index_t *p_cstr_index)
322 OPJ_BYTE *l_current_data = p_src;
323 opj_pi_iterator_t *l_pi = 00;
325 opj_image_t *l_image = p_t2->image;
326 opj_cp_t *l_cp = p_t2->cp;
327 opj_tcp_t *l_tcp = &(p_t2->cp->tcps[p_tile_no]);
328 OPJ_UINT32 l_nb_bytes_read;
329 OPJ_UINT32 l_nb_pocs = l_tcp->numpocs + 1;
330 opj_pi_iterator_t *l_current_pi = 00;
332 OPJ_UINT32 curtp = 0;
333 OPJ_UINT32 tp_start_packno;
335 opj_packet_info_t *l_pack_info = 00;
336 opj_image_comp_t* l_img_comp = 00;
338 OPJ_ARG_NOT_USED(p_cstr_index);
342 l_pack_info = p_cstr_index->tile_index[p_tile_no].packet;
346 /* create a packet iterator */
347 l_pi = opj_pi_create_decode(l_image, l_cp, p_tile_no);
355 for (pino = 0; pino <= l_tcp->numpocs; ++pino) {
357 /* if the resolution needed is to low, one dim of the tilec could be equal to zero
358 * and no packets are used to encode this resolution and
359 * l_current_pi->resno is always >= p_tile->comps[l_current_pi->compno].minimum_num_resolutions
360 * and no l_img_comp->resno_decoded are computed
362 OPJ_BOOL* first_pass_failed = (OPJ_BOOL*)opj_malloc(l_image->numcomps * sizeof(OPJ_BOOL));
363 if (!first_pass_failed)
365 opj_pi_destroy(l_pi,l_nb_pocs);
368 memset(first_pass_failed, OPJ_TRUE, l_image->numcomps * sizeof(OPJ_BOOL));
370 while (opj_pi_next(l_current_pi)) {
373 if (l_tcp->num_layers_to_decode > l_current_pi->layno
374 && l_current_pi->resno < p_tile->comps[l_current_pi->compno].minimum_num_resolutions) {
377 first_pass_failed[l_current_pi->compno] = OPJ_FALSE;
379 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)) {
380 opj_pi_destroy(l_pi,l_nb_pocs);
381 opj_free(first_pass_failed);
385 l_img_comp = &(l_image->comps[l_current_pi->compno]);
386 l_img_comp->resno_decoded = opj_uint_max(l_current_pi->resno, l_img_comp->resno_decoded);
390 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)) {
391 opj_pi_destroy(l_pi,l_nb_pocs);
392 opj_free(first_pass_failed);
397 if (first_pass_failed[l_current_pi->compno]) {
398 l_img_comp = &(l_image->comps[l_current_pi->compno]);
399 if (l_img_comp->resno_decoded == 0)
400 l_img_comp->resno_decoded = p_tile->comps[l_current_pi->compno].minimum_num_resolutions - 1;
403 l_current_data += l_nb_bytes_read;
404 p_max_len -= l_nb_bytes_read;
409 opj_tile_info_v2_t *info_TL = &p_cstr_info->tile[p_tile_no];
410 opj_packet_info_t *info_PK = &info_TL->packet[p_cstr_info->packno];
412 if (!p_cstr_info->packno) {
413 info_PK->start_pos = info_TL->end_header + 1;
414 } 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 */
415 info_TL->tp[curtp].tp_numpacks = p_cstr_info->packno - tp_start_packno; /* Number of packets in previous tile-part */
416 tp_start_packno = p_cstr_info->packno;
418 info_PK->start_pos = p_cstr_info->tile[p_tile_no].tp[curtp].tp_end_header+1;
420 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;
422 info_PK->end_pos = info_PK->start_pos + l_nb_bytes_read - 1;
423 info_PK->end_ph_pos += info_PK->start_pos - 1; /* End of packet header which now only represents the distance */
424 ++p_cstr_info->packno;
431 opj_free(first_pass_failed);
437 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 */
442 /* don't forget to release pi */
443 opj_pi_destroy(l_pi,l_nb_pocs);
444 assert( l_current_data - p_src < UINT32_MAX );
445 *p_data_read = (OPJ_UINT32)(l_current_data - p_src);
449 /* ----------------------------------------------------------------------- */
452 * Creates a Tier 2 handle
454 * @param p_image Source or destination image
455 * @param p_cp Image coding parameters.
456 * @return a new T2 handle if successful, NULL otherwise.
458 opj_t2_t* opj_t2_create(opj_image_t *p_image, opj_cp_t *p_cp)
460 /* create the t2 structure */
461 opj_t2_t *l_t2 = (opj_t2_t*)opj_malloc(sizeof(opj_t2_t));
465 memset(l_t2,0,sizeof(opj_t2_t));
467 l_t2->image = p_image;
473 void opj_t2_destroy(opj_t2_t *t2) {
479 OPJ_BOOL opj_t2_decode_packet( opj_t2_t* p_t2,
480 opj_tcd_tile_t *p_tile,
482 opj_pi_iterator_t *p_pi,
484 OPJ_UINT32 * p_data_read,
485 OPJ_UINT32 p_max_length,
486 opj_packet_info_t *p_pack_info)
488 OPJ_BOOL l_read_data;
489 OPJ_UINT32 l_nb_bytes_read = 0;
490 OPJ_UINT32 l_nb_total_bytes_read = 0;
494 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)) {
498 p_src += l_nb_bytes_read;
499 l_nb_total_bytes_read += l_nb_bytes_read;
500 p_max_length -= l_nb_bytes_read;
502 /* we should read data for the packet */
506 if (! opj_t2_read_packet_data(p_t2,p_tile,p_pi,p_src,&l_nb_bytes_read,p_max_length,p_pack_info)) {
510 l_nb_total_bytes_read += l_nb_bytes_read;
513 *p_data_read = l_nb_total_bytes_read;
518 OPJ_BOOL opj_t2_encode_packet( OPJ_UINT32 tileno,
519 opj_tcd_tile_t * tile,
521 opj_pi_iterator_t *pi,
523 OPJ_UINT32 * p_data_written,
525 opj_codestream_info_t *cstr_info)
527 OPJ_UINT32 bandno, cblkno;
529 OPJ_UINT32 l_nb_bytes;
530 OPJ_UINT32 compno = pi->compno; /* component value */
531 OPJ_UINT32 resno = pi->resno; /* resolution level value */
532 OPJ_UINT32 precno = pi->precno; /* precinct value */
533 OPJ_UINT32 layno = pi->layno; /* quality layer value */
534 OPJ_UINT32 l_nb_blocks;
535 opj_tcd_band_t *band = 00;
536 opj_tcd_cblk_enc_t* cblk = 00;
537 opj_tcd_pass_t *pass = 00;
539 opj_tcd_tilecomp_t *tilec = &tile->comps[compno];
540 opj_tcd_resolution_t *res = &tilec->resolutions[resno];
542 opj_bio_t *bio = 00; /* BIO component */
545 if (tcp->csty & J2K_CP_CSTY_SOP) {
550 c[4] = (tile->packno % 65536) / 256;
551 c[5] = (tile->packno % 65536) % 256;
560 for(bandno = 0; bandno < res->numbands; ++bandno) {
561 opj_tcd_precinct_t *prc = &band->precincts[precno];
563 opj_tgt_reset(prc->incltree);
564 opj_tgt_reset(prc->imsbtree);
566 l_nb_blocks = prc->cw * prc->ch;
567 for (cblkno = 0; cblkno < l_nb_blocks; ++cblkno) {
568 cblk = &prc->cblks.enc[cblkno];
571 opj_tgt_setvalue(prc->imsbtree, cblkno, band->numbps - cblk->numbps);
577 bio = opj_bio_create();
578 opj_bio_init_enc(bio, c, length);
579 opj_bio_write(bio, 1, 1); /* Empty header bit */
581 /* Writing Packet header */
583 for (bandno = 0; bandno < res->numbands; ++bandno) {
584 opj_tcd_precinct_t *prc = &band->precincts[precno];
586 l_nb_blocks = prc->cw * prc->ch;
587 cblk = prc->cblks.enc;
589 for (cblkno = 0; cblkno < l_nb_blocks; ++cblkno) {
590 opj_tcd_layer_t *layer = &cblk->layers[layno];
592 if (!cblk->numpasses && layer->numpasses) {
593 opj_tgt_setvalue(prc->incltree, cblkno, layno);
599 cblk = prc->cblks.enc;
600 for (cblkno = 0; cblkno < l_nb_blocks; cblkno++) {
601 opj_tcd_layer_t *layer = &cblk->layers[layno];
602 OPJ_UINT32 increment = 0;
604 OPJ_UINT32 len = 0, passno;
605 OPJ_UINT32 l_nb_passes;
607 /* cblk inclusion bits */
608 if (!cblk->numpasses) {
609 opj_tgt_encode(bio, prc->incltree, cblkno, layno + 1);
611 opj_bio_write(bio, layer->numpasses != 0, 1);
614 /* if cblk not included, go to the next cblk */
615 if (!layer->numpasses) {
620 /* if first instance of cblk --> zero bit-planes information */
621 if (!cblk->numpasses) {
622 cblk->numlenbits = 3;
623 opj_tgt_encode(bio, prc->imsbtree, cblkno, 999);
626 /* number of coding passes included */
627 opj_t2_putnumpasses(bio, layer->numpasses);
628 l_nb_passes = cblk->numpasses + layer->numpasses;
629 pass = cblk->passes + cblk->numpasses;
631 /* computation of the increase of the length indicator and insertion in the header */
632 for (passno = cblk->numpasses; passno < l_nb_passes; ++passno) {
636 if (pass->term || passno == (cblk->numpasses + layer->numpasses) - 1) {
637 increment = opj_int_max(increment, opj_int_floorlog2(len) + 1 - (cblk->numlenbits + opj_int_floorlog2(nump)));
644 opj_t2_putcommacode(bio, increment);
646 /* computation of the new Length indicator */
647 cblk->numlenbits += increment;
649 pass = cblk->passes + cblk->numpasses;
650 /* insertion of the codeword segment length */
651 for (passno = cblk->numpasses; passno < l_nb_passes; ++passno) {
655 if (pass->term || passno == (cblk->numpasses + layer->numpasses) - 1) {
656 opj_bio_write(bio, len, cblk->numlenbits + opj_int_floorlog2(nump));
669 if (!opj_bio_flush(bio)) {
670 opj_bio_destroy(bio);
671 return OPJ_FALSE; /* modified to eliminate longjmp !! */
674 l_nb_bytes = opj_bio_numbytes(bio);
676 length -= l_nb_bytes;
678 opj_bio_destroy(bio);
681 if (tcp->csty & J2K_CP_CSTY_EPH) {
690 /* End of packet header position. Currently only represents the distance to start of packet
691 Will be updated later by incrementing with packet start value*/
692 if(cstr_info && cstr_info->index_write) {
693 opj_packet_info_t *info_PK = &cstr_info->tile[tileno].packet[cstr_info->packno];
694 info_PK->end_ph_pos = (OPJ_INT32)(c - dest);
698 /* Writing the packet body */
700 for (bandno = 0; bandno < res->numbands; bandno++) {
701 opj_tcd_precinct_t *prc = &band->precincts[precno];
703 l_nb_blocks = prc->cw * prc->ch;
704 cblk = prc->cblks.enc;
706 for (cblkno = 0; cblkno < l_nb_blocks; ++cblkno) {
707 opj_tcd_layer_t *layer = &cblk->layers[layno];
709 if (!layer->numpasses) {
714 if (layer->len > length) {
718 memcpy(c, layer->data, layer->len);
719 cblk->numpasses += layer->numpasses;
721 length -= layer->len;
724 if(cstr_info && cstr_info->index_write) {
725 opj_packet_info_t *info_PK = &cstr_info->tile[tileno].packet[cstr_info->packno];
726 info_PK->disto += layer->disto;
727 if (cstr_info->D_max < info_PK->disto) {
728 cstr_info->D_max = info_PK->disto;
738 * p_data_written += (c - dest);
743 static OPJ_BOOL opj_t2_skip_packet( opj_t2_t* p_t2,
744 opj_tcd_tile_t *p_tile,
746 opj_pi_iterator_t *p_pi,
748 OPJ_UINT32 * p_data_read,
749 OPJ_UINT32 p_max_length,
750 opj_packet_info_t *p_pack_info)
752 OPJ_BOOL l_read_data;
753 OPJ_UINT32 l_nb_bytes_read = 0;
754 OPJ_UINT32 l_nb_total_bytes_read = 0;
758 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)) {
762 p_src += l_nb_bytes_read;
763 l_nb_total_bytes_read += l_nb_bytes_read;
764 p_max_length -= l_nb_bytes_read;
766 /* we should read data for the packet */
770 if (! opj_t2_skip_packet_data(p_t2,p_tile,p_pi,&l_nb_bytes_read,p_max_length,p_pack_info)) {
774 l_nb_total_bytes_read += l_nb_bytes_read;
776 *p_data_read = l_nb_total_bytes_read;
783 OPJ_BOOL opj_t2_read_packet_header( opj_t2_t* p_t2,
784 opj_tcd_tile_t *p_tile,
786 opj_pi_iterator_t *p_pi,
787 OPJ_BOOL * p_is_data_present,
788 OPJ_BYTE *p_src_data,
789 OPJ_UINT32 * p_data_read,
790 OPJ_UINT32 p_max_length,
791 opj_packet_info_t *p_pack_info)
795 OPJ_UINT32 bandno, cblkno;
796 OPJ_UINT32 l_nb_code_blocks;
797 OPJ_UINT32 l_remaining_length;
798 OPJ_UINT32 l_header_length;
799 OPJ_UINT32 * l_modified_length_ptr = 00;
800 OPJ_BYTE *l_current_data = p_src_data;
801 opj_cp_t *l_cp = p_t2->cp;
802 opj_bio_t *l_bio = 00; /* BIO component */
803 opj_tcd_band_t *l_band = 00;
804 opj_tcd_cblk_dec_t* l_cblk = 00;
805 opj_tcd_resolution_t* l_res = &p_tile->comps[p_pi->compno].resolutions[p_pi->resno];
807 OPJ_BYTE *l_header_data = 00;
808 OPJ_BYTE **l_header_data_start = 00;
810 OPJ_UINT32 l_present;
812 if (p_pi->layno == 0) {
813 l_band = l_res->bands;
816 for (bandno = 0; bandno < l_res->numbands; ++bandno) {
817 opj_tcd_precinct_t *l_prc = &l_band->precincts[p_pi->precno];
819 if ( ! ((l_band->x1-l_band->x0 == 0)||(l_band->y1-l_band->y0 == 0)) ) {
820 opj_tgt_reset(l_prc->incltree);
821 opj_tgt_reset(l_prc->imsbtree);
822 l_cblk = l_prc->cblks.dec;
824 l_nb_code_blocks = l_prc->cw * l_prc->ch;
825 for (cblkno = 0; cblkno < l_nb_code_blocks; ++cblkno) {
827 l_cblk->real_num_segs = 0;
838 if (p_tcp->csty & J2K_CP_CSTY_SOP) {
839 if ((*l_current_data) != 0xff || (*(l_current_data + 1) != 0x91)) {
840 /* TODO opj_event_msg(t2->cinfo->event_mgr, EVT_WARNING, "Expected SOP marker\n"); */
845 /** TODO : check the Nsop value */
849 When the marker PPT/PPM is used the packet header are store in PPT/PPM marker
850 This part deal with this caracteristic
851 step 1: Read packet header in the saved structure
852 step 2: Return to codestream for decoding
855 l_bio = opj_bio_create();
860 if (l_cp->ppm == 1) { /* PPM */
861 l_header_data_start = &l_cp->ppm_data;
862 l_header_data = *l_header_data_start;
863 l_modified_length_ptr = &(l_cp->ppm_len);
866 else if (p_tcp->ppt == 1) { /* PPT */
867 l_header_data_start = &(p_tcp->ppt_data);
868 l_header_data = *l_header_data_start;
869 l_modified_length_ptr = &(p_tcp->ppt_len);
871 else { /* Normal Case */
872 l_header_data_start = &(l_current_data);
873 l_header_data = *l_header_data_start;
874 l_remaining_length = p_src_data+p_max_length-l_header_data;
875 l_modified_length_ptr = &(l_remaining_length);
878 opj_bio_init_dec(l_bio, l_header_data,*l_modified_length_ptr);
880 l_present = opj_bio_read(l_bio, 1);
882 /* TODO MSD: no test to control the output of this function*/
883 opj_bio_inalign(l_bio);
884 l_header_data += opj_bio_numbytes(l_bio);
885 opj_bio_destroy(l_bio);
888 if (p_tcp->csty & J2K_CP_CSTY_EPH) {
889 if (p_max_length < 2) {
890 fprintf(stderr, "Not enough space for expected EPH marker\n");
891 } else if ((*l_header_data) != 0xff || (*(l_header_data + 1) != 0x92)) {
892 printf("Error : expected EPH marker\n");
898 l_header_length = (l_header_data - *l_header_data_start);
899 *l_modified_length_ptr -= l_header_length;
900 *l_header_data_start += l_header_length;
903 /* End of packet header position. Currently only represents the distance to start of packet
904 Will be updated later by incrementing with packet start value */
906 p_pack_info->end_ph_pos = (OPJ_INT32)(l_current_data - p_src_data);
910 * p_is_data_present = OPJ_FALSE;
911 *p_data_read = l_current_data - p_src_data;
915 l_band = l_res->bands;
916 for (bandno = 0; bandno < l_res->numbands; ++bandno) {
917 opj_tcd_precinct_t *l_prc = &(l_band->precincts[p_pi->precno]);
919 if ((l_band->x1-l_band->x0 == 0)||(l_band->y1-l_band->y0 == 0)) {
924 l_nb_code_blocks = l_prc->cw * l_prc->ch;
925 l_cblk = l_prc->cblks.dec;
926 for (cblkno = 0; cblkno < l_nb_code_blocks; cblkno++) {
927 OPJ_UINT32 l_included,l_increment, l_segno;
930 /* if cblk not yet included before --> inclusion tagtree */
931 if (!l_cblk->numsegs) {
932 l_included = opj_tgt_decode(l_bio, l_prc->incltree, cblkno, p_pi->layno + 1);
936 l_included = opj_bio_read(l_bio, 1);
939 /* if cblk not included */
941 l_cblk->numnewpasses = 0;
946 /* if cblk not yet included --> zero-bitplane tagtree */
947 if (!l_cblk->numsegs) {
950 while (!opj_tgt_decode(l_bio, l_prc->imsbtree, cblkno, i)) {
954 l_cblk->numbps = l_band->numbps + 1 - i;
955 l_cblk->numlenbits = 3;
958 /* number of coding passes */
959 l_cblk->numnewpasses = opj_t2_getnumpasses(l_bio);
960 l_increment = opj_t2_getcommacode(l_bio);
962 /* length indicator increment */
963 l_cblk->numlenbits += l_increment;
966 if (!l_cblk->numsegs) {
967 if (! opj_t2_init_seg(l_cblk, l_segno, p_tcp->tccps[p_pi->compno].cblksty, 1)) {
968 opj_bio_destroy(l_bio);
973 l_segno = l_cblk->numsegs - 1;
974 if (l_cblk->segs[l_segno].numpasses == l_cblk->segs[l_segno].maxpasses) {
976 if (! opj_t2_init_seg(l_cblk, l_segno, p_tcp->tccps[p_pi->compno].cblksty, 0)) {
977 opj_bio_destroy(l_bio);
982 n = l_cblk->numnewpasses;
985 l_cblk->segs[l_segno].numnewpasses = opj_int_min(l_cblk->segs[l_segno].maxpasses - l_cblk->segs[l_segno].numpasses, n);
986 l_cblk->segs[l_segno].newlen = opj_bio_read(l_bio, l_cblk->numlenbits + opj_uint_floorlog2(l_cblk->segs[l_segno].numnewpasses));
988 n -= l_cblk->segs[l_segno].numnewpasses;
992 if (! opj_t2_init_seg(l_cblk, l_segno, p_tcp->tccps[p_pi->compno].cblksty, 0)) {
993 opj_bio_destroy(l_bio);
1005 if (!opj_bio_inalign(l_bio)) {
1006 opj_bio_destroy(l_bio);
1010 l_header_data += opj_bio_numbytes(l_bio);
1011 opj_bio_destroy(l_bio);
1014 if (p_tcp->csty & J2K_CP_CSTY_EPH) {
1015 if (p_max_length < 2) {
1016 fprintf(stderr, "Not enough space for expected EPH marker\n");
1017 } else if ((*l_header_data) != 0xff || (*(l_header_data + 1) != 0x92)) {
1018 /* TODO opj_event_msg(t2->cinfo->event_mgr, EVT_ERROR, "Expected EPH marker\n"); */
1024 l_header_length = (l_header_data - *l_header_data_start);
1025 *l_modified_length_ptr -= l_header_length;
1026 *l_header_data_start += l_header_length;
1029 /* End of packet header position. Currently only represents the distance to start of packet
1030 Will be updated later by incrementing with packet start value */
1032 p_pack_info->end_ph_pos = (OPJ_INT32)(l_current_data - p_src_data);
1036 *p_is_data_present = OPJ_TRUE;
1037 *p_data_read = l_current_data - p_src_data;
1042 OPJ_BOOL opj_t2_read_packet_data( opj_t2_t* p_t2,
1043 opj_tcd_tile_t *p_tile,
1044 opj_pi_iterator_t *p_pi,
1045 OPJ_BYTE *p_src_data,
1046 OPJ_UINT32 * p_data_read,
1047 OPJ_UINT32 p_max_length,
1048 opj_packet_info_t *pack_info)
1050 OPJ_UINT32 bandno, cblkno;
1051 OPJ_UINT32 l_nb_code_blocks;
1052 OPJ_BYTE *l_current_data = p_src_data;
1053 opj_tcd_band_t *l_band = 00;
1054 opj_tcd_cblk_dec_t* l_cblk = 00;
1055 opj_tcd_resolution_t* l_res = &p_tile->comps[p_pi->compno].resolutions[p_pi->resno];
1057 OPJ_ARG_NOT_USED(p_t2);
1058 OPJ_ARG_NOT_USED(pack_info);
1060 l_band = l_res->bands;
1061 for (bandno = 0; bandno < l_res->numbands; ++bandno) {
1062 opj_tcd_precinct_t *l_prc = &l_band->precincts[p_pi->precno];
1064 if ((l_band->x1-l_band->x0 == 0)||(l_band->y1-l_band->y0 == 0)) {
1069 l_nb_code_blocks = l_prc->cw * l_prc->ch;
1070 l_cblk = l_prc->cblks.dec;
1072 for (cblkno = 0; cblkno < l_nb_code_blocks; ++cblkno) {
1073 opj_tcd_seg_t *l_seg = 00;
1075 if (!l_cblk->numnewpasses) {
1081 if (!l_cblk->numsegs) {
1082 l_seg = l_cblk->segs;
1084 l_cblk->data_current_size = 0;
1087 l_seg = &l_cblk->segs[l_cblk->numsegs - 1];
1089 if (l_seg->numpasses == l_seg->maxpasses) {
1096 if (l_current_data + l_seg->newlen > p_src_data + p_max_length) {
1101 /* we need here a j2k handle to verify if making a check to
1102 the validity of cblocks parameters is selected from user (-W) */
1104 /* let's check that we are not exceeding */
1105 if ((l_cblk->len + l_seg->newlen) > 8192) {
1106 opj_event_msg(p_t2->cinfo, EVT_WARNING,
1107 "JPWL: segment too long (%d) for codeblock %d (p=%d, b=%d, r=%d, c=%d)\n",
1108 l_seg->newlen, cblkno, p_pi->precno, bandno, p_pi->resno, p_pi->compno);
1110 opj_event_msg(p_t2->cinfo, EVT_ERROR, "JPWL: giving up\n");
1113 l_seg->newlen = 8192 - l_cblk->len;
1114 opj_event_msg(p_t2->cinfo, EVT_WARNING, " - truncating segment to %d\n", l_seg->newlen);
1118 #endif /* USE_JPWL */
1119 /* Check if the cblk->data have allocated enough memory */
1120 if ((l_cblk->data_current_size + l_seg->newlen) > l_cblk->data_max_size) {
1121 OPJ_BYTE* new_cblk_data = (OPJ_BYTE*) opj_realloc(l_cblk->data, l_cblk->data_current_size + l_seg->newlen);
1122 if(! new_cblk_data) {
1123 opj_free(l_cblk->data);
1124 l_cblk->data_max_size = 0;
1125 /* opj_event_msg(p_manager, EVT_ERROR, "Not enough memory to realloc code block cata!\n"); */
1128 l_cblk->data_max_size = l_cblk->data_current_size + l_seg->newlen;
1129 l_cblk->data = new_cblk_data;
1132 memcpy(l_cblk->data + l_cblk->data_current_size, l_current_data, l_seg->newlen);
1134 if (l_seg->numpasses == 0) {
1135 l_seg->data = &l_cblk->data;
1136 l_seg->dataindex = l_cblk->data_current_size;
1139 l_current_data += l_seg->newlen;
1140 l_seg->numpasses += l_seg->numnewpasses;
1141 l_cblk->numnewpasses -= l_seg->numnewpasses;
1143 l_seg->real_num_passes = l_seg->numpasses;
1144 l_cblk->data_current_size += l_seg->newlen;
1145 l_seg->len += l_seg->newlen;
1147 if (l_cblk->numnewpasses > 0) {
1151 } while (l_cblk->numnewpasses > 0);
1153 l_cblk->real_num_segs = l_cblk->numsegs;
1155 } /* next code_block */
1160 *(p_data_read) = l_current_data - p_src_data;
1165 OPJ_BOOL opj_t2_skip_packet_data( opj_t2_t* p_t2,
1166 opj_tcd_tile_t *p_tile,
1167 opj_pi_iterator_t *p_pi,
1168 OPJ_UINT32 * p_data_read,
1169 OPJ_UINT32 p_max_length,
1170 opj_packet_info_t *pack_info)
1172 OPJ_UINT32 bandno, cblkno;
1173 OPJ_UINT32 l_nb_code_blocks;
1174 opj_tcd_band_t *l_band = 00;
1175 opj_tcd_cblk_dec_t* l_cblk = 00;
1176 opj_tcd_resolution_t* l_res = &p_tile->comps[p_pi->compno].resolutions[p_pi->resno];
1178 OPJ_ARG_NOT_USED(p_t2);
1179 OPJ_ARG_NOT_USED(pack_info);
1182 l_band = l_res->bands;
1184 for (bandno = 0; bandno < l_res->numbands; ++bandno) {
1185 opj_tcd_precinct_t *l_prc = &l_band->precincts[p_pi->precno];
1187 if ((l_band->x1-l_band->x0 == 0)||(l_band->y1-l_band->y0 == 0)) {
1192 l_nb_code_blocks = l_prc->cw * l_prc->ch;
1193 l_cblk = l_prc->cblks.dec;
1195 for (cblkno = 0; cblkno < l_nb_code_blocks; ++cblkno) {
1196 opj_tcd_seg_t *l_seg = 00;
1198 if (!l_cblk->numnewpasses) {
1204 if (!l_cblk->numsegs) {
1205 l_seg = l_cblk->segs;
1207 l_cblk->data_current_size = 0;
1210 l_seg = &l_cblk->segs[l_cblk->numsegs - 1];
1212 if (l_seg->numpasses == l_seg->maxpasses) {
1219 if (* p_data_read + l_seg->newlen > p_max_length) {
1224 /* we need here a j2k handle to verify if making a check to
1225 the validity of cblocks parameters is selected from user (-W) */
1227 /* let's check that we are not exceeding */
1228 if ((l_cblk->len + l_seg->newlen) > 8192) {
1229 opj_event_msg(p_t2->cinfo, EVT_WARNING,
1230 "JPWL: segment too long (%d) for codeblock %d (p=%d, b=%d, r=%d, c=%d)\n",
1231 l_seg->newlen, cblkno, p_pi->precno, bandno, p_pi->resno, p_pi->compno);
1233 opj_event_msg(p_t2->cinfo, EVT_ERROR, "JPWL: giving up\n");
1236 l_seg->newlen = 8192 - l_cblk->len;
1237 opj_event_msg(p_t2->cinfo, EVT_WARNING, " - truncating segment to %d\n", l_seg->newlen);
1241 #endif /* USE_JPWL */
1242 *(p_data_read) += l_seg->newlen;
1244 l_seg->numpasses += l_seg->numnewpasses;
1245 l_cblk->numnewpasses -= l_seg->numnewpasses;
1246 if (l_cblk->numnewpasses > 0)
1251 } while (l_cblk->numnewpasses > 0);
1263 OPJ_BOOL opj_t2_init_seg( opj_tcd_cblk_dec_t* cblk,
1268 opj_tcd_seg_t* seg = 00;
1269 OPJ_UINT32 l_nb_segs = index + 1;
1271 if (l_nb_segs > cblk->m_current_max_segs) {
1272 opj_tcd_seg_t* new_segs;
1273 cblk->m_current_max_segs += OPJ_J2K_DEFAULT_NB_SEGS;
1275 new_segs = (opj_tcd_seg_t*) opj_realloc(cblk->segs, cblk->m_current_max_segs * sizeof(opj_tcd_seg_t));
1277 opj_free(cblk->segs);
1279 cblk->m_current_max_segs = 0;
1280 /* opj_event_msg(p_manager, EVT_ERROR, "Not enough memory to initialize segment %d\n", l_nb_segs); */
1283 cblk->segs = new_segs;
1286 seg = &cblk->segs[index];
1287 memset(seg,0,sizeof(opj_tcd_seg_t));
1289 if (cblksty & J2K_CCP_CBLKSTY_TERMALL) {
1292 else if (cblksty & J2K_CCP_CBLKSTY_LAZY) {
1294 seg->maxpasses = 10;
1296 seg->maxpasses = (((seg - 1)->maxpasses == 1) || ((seg - 1)->maxpasses == 10)) ? 2 : 1;
1299 seg->maxpasses = 109;