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 *p_data_read = l_current_data - p_src;
448 /* ----------------------------------------------------------------------- */
451 * Creates a Tier 2 handle
453 * @param p_image Source or destination image
454 * @param p_cp Image coding parameters.
455 * @return a new T2 handle if successful, NULL otherwise.
457 opj_t2_t* opj_t2_create(opj_image_t *p_image, opj_cp_t *p_cp)
459 /* create the t2 structure */
460 opj_t2_t *l_t2 = (opj_t2_t*)opj_malloc(sizeof(opj_t2_t));
464 memset(l_t2,0,sizeof(opj_t2_t));
466 l_t2->image = p_image;
472 void opj_t2_destroy(opj_t2_t *t2) {
478 OPJ_BOOL opj_t2_decode_packet( opj_t2_t* p_t2,
479 opj_tcd_tile_t *p_tile,
481 opj_pi_iterator_t *p_pi,
483 OPJ_UINT32 * p_data_read,
484 OPJ_UINT32 p_max_length,
485 opj_packet_info_t *p_pack_info)
487 OPJ_BOOL l_read_data;
488 OPJ_UINT32 l_nb_bytes_read = 0;
489 OPJ_UINT32 l_nb_total_bytes_read = 0;
493 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)) {
497 p_src += l_nb_bytes_read;
498 l_nb_total_bytes_read += l_nb_bytes_read;
499 p_max_length -= l_nb_bytes_read;
501 /* we should read data for the packet */
505 if (! opj_t2_read_packet_data(p_t2,p_tile,p_pi,p_src,&l_nb_bytes_read,p_max_length,p_pack_info)) {
509 l_nb_total_bytes_read += l_nb_bytes_read;
512 *p_data_read = l_nb_total_bytes_read;
517 OPJ_BOOL opj_t2_encode_packet( OPJ_UINT32 tileno,
518 opj_tcd_tile_t * tile,
520 opj_pi_iterator_t *pi,
522 OPJ_UINT32 * p_data_written,
524 opj_codestream_info_t *cstr_info)
526 OPJ_UINT32 bandno, cblkno;
528 OPJ_UINT32 l_nb_bytes;
529 OPJ_UINT32 compno = pi->compno; /* component value */
530 OPJ_UINT32 resno = pi->resno; /* resolution level value */
531 OPJ_UINT32 precno = pi->precno; /* precinct value */
532 OPJ_UINT32 layno = pi->layno; /* quality layer value */
533 OPJ_UINT32 l_nb_blocks;
534 opj_tcd_band_t *band = 00;
535 opj_tcd_cblk_enc_t* cblk = 00;
536 opj_tcd_pass_t *pass = 00;
538 opj_tcd_tilecomp_t *tilec = &tile->comps[compno];
539 opj_tcd_resolution_t *res = &tilec->resolutions[resno];
541 opj_bio_t *bio = 00; /* BIO component */
544 if (tcp->csty & J2K_CP_CSTY_SOP) {
549 c[4] = (tile->packno % 65536) / 256;
550 c[5] = (tile->packno % 65536) % 256;
559 for(bandno = 0; bandno < res->numbands; ++bandno) {
560 opj_tcd_precinct_t *prc = &band->precincts[precno];
562 opj_tgt_reset(prc->incltree);
563 opj_tgt_reset(prc->imsbtree);
565 l_nb_blocks = prc->cw * prc->ch;
566 for (cblkno = 0; cblkno < l_nb_blocks; ++cblkno) {
567 cblk = &prc->cblks.enc[cblkno];
570 opj_tgt_setvalue(prc->imsbtree, cblkno, band->numbps - cblk->numbps);
576 bio = opj_bio_create();
577 opj_bio_init_enc(bio, c, length);
578 opj_bio_write(bio, 1, 1); /* Empty header bit */
580 /* Writing Packet header */
582 for (bandno = 0; bandno < res->numbands; ++bandno) {
583 opj_tcd_precinct_t *prc = &band->precincts[precno];
585 l_nb_blocks = prc->cw * prc->ch;
586 cblk = prc->cblks.enc;
588 for (cblkno = 0; cblkno < l_nb_blocks; ++cblkno) {
589 opj_tcd_layer_t *layer = &cblk->layers[layno];
591 if (!cblk->numpasses && layer->numpasses) {
592 opj_tgt_setvalue(prc->incltree, cblkno, layno);
598 cblk = prc->cblks.enc;
599 for (cblkno = 0; cblkno < l_nb_blocks; cblkno++) {
600 opj_tcd_layer_t *layer = &cblk->layers[layno];
601 OPJ_UINT32 increment = 0;
603 OPJ_UINT32 len = 0, passno;
604 OPJ_UINT32 l_nb_passes;
606 /* cblk inclusion bits */
607 if (!cblk->numpasses) {
608 opj_tgt_encode(bio, prc->incltree, cblkno, layno + 1);
610 opj_bio_write(bio, layer->numpasses != 0, 1);
613 /* if cblk not included, go to the next cblk */
614 if (!layer->numpasses) {
619 /* if first instance of cblk --> zero bit-planes information */
620 if (!cblk->numpasses) {
621 cblk->numlenbits = 3;
622 opj_tgt_encode(bio, prc->imsbtree, cblkno, 999);
625 /* number of coding passes included */
626 opj_t2_putnumpasses(bio, layer->numpasses);
627 l_nb_passes = cblk->numpasses + layer->numpasses;
628 pass = cblk->passes + cblk->numpasses;
630 /* computation of the increase of the length indicator and insertion in the header */
631 for (passno = cblk->numpasses; passno < l_nb_passes; ++passno) {
635 if (pass->term || passno == (cblk->numpasses + layer->numpasses) - 1) {
636 increment = opj_int_max(increment, opj_int_floorlog2(len) + 1 - (cblk->numlenbits + opj_int_floorlog2(nump)));
643 opj_t2_putcommacode(bio, increment);
645 /* computation of the new Length indicator */
646 cblk->numlenbits += increment;
648 pass = cblk->passes + cblk->numpasses;
649 /* insertion of the codeword segment length */
650 for (passno = cblk->numpasses; passno < l_nb_passes; ++passno) {
654 if (pass->term || passno == (cblk->numpasses + layer->numpasses) - 1) {
655 opj_bio_write(bio, len, cblk->numlenbits + opj_int_floorlog2(nump));
668 if (!opj_bio_flush(bio)) {
669 opj_bio_destroy(bio);
670 return OPJ_FALSE; /* modified to eliminate longjmp !! */
673 l_nb_bytes = opj_bio_numbytes(bio);
675 length -= l_nb_bytes;
677 opj_bio_destroy(bio);
680 if (tcp->csty & J2K_CP_CSTY_EPH) {
689 /* End of packet header position. Currently only represents the distance to start of packet
690 Will be updated later by incrementing with packet start value*/
691 if(cstr_info && cstr_info->index_write) {
692 opj_packet_info_t *info_PK = &cstr_info->tile[tileno].packet[cstr_info->packno];
693 info_PK->end_ph_pos = (OPJ_INT32)(c - dest);
697 /* Writing the packet body */
699 for (bandno = 0; bandno < res->numbands; bandno++) {
700 opj_tcd_precinct_t *prc = &band->precincts[precno];
702 l_nb_blocks = prc->cw * prc->ch;
703 cblk = prc->cblks.enc;
705 for (cblkno = 0; cblkno < l_nb_blocks; ++cblkno) {
706 opj_tcd_layer_t *layer = &cblk->layers[layno];
708 if (!layer->numpasses) {
713 if (layer->len > length) {
717 memcpy(c, layer->data, layer->len);
718 cblk->numpasses += layer->numpasses;
720 length -= layer->len;
723 if(cstr_info && cstr_info->index_write) {
724 opj_packet_info_t *info_PK = &cstr_info->tile[tileno].packet[cstr_info->packno];
725 info_PK->disto += layer->disto;
726 if (cstr_info->D_max < info_PK->disto) {
727 cstr_info->D_max = info_PK->disto;
737 * p_data_written += (c - dest);
742 static OPJ_BOOL opj_t2_skip_packet( opj_t2_t* p_t2,
743 opj_tcd_tile_t *p_tile,
745 opj_pi_iterator_t *p_pi,
747 OPJ_UINT32 * p_data_read,
748 OPJ_UINT32 p_max_length,
749 opj_packet_info_t *p_pack_info)
751 OPJ_BOOL l_read_data;
752 OPJ_UINT32 l_nb_bytes_read = 0;
753 OPJ_UINT32 l_nb_total_bytes_read = 0;
757 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)) {
761 p_src += l_nb_bytes_read;
762 l_nb_total_bytes_read += l_nb_bytes_read;
763 p_max_length -= l_nb_bytes_read;
765 /* we should read data for the packet */
769 if (! opj_t2_skip_packet_data(p_t2,p_tile,p_pi,&l_nb_bytes_read,p_max_length,p_pack_info)) {
773 l_nb_total_bytes_read += l_nb_bytes_read;
775 *p_data_read = l_nb_total_bytes_read;
782 OPJ_BOOL opj_t2_read_packet_header( opj_t2_t* p_t2,
783 opj_tcd_tile_t *p_tile,
785 opj_pi_iterator_t *p_pi,
786 OPJ_BOOL * p_is_data_present,
787 OPJ_BYTE *p_src_data,
788 OPJ_UINT32 * p_data_read,
789 OPJ_UINT32 p_max_length,
790 opj_packet_info_t *p_pack_info)
794 OPJ_UINT32 bandno, cblkno;
795 OPJ_UINT32 l_nb_code_blocks;
796 OPJ_UINT32 l_remaining_length;
797 OPJ_UINT32 l_header_length;
798 OPJ_UINT32 * l_modified_length_ptr = 00;
799 OPJ_BYTE *l_current_data = p_src_data;
800 opj_cp_t *l_cp = p_t2->cp;
801 opj_bio_t *l_bio = 00; /* BIO component */
802 opj_tcd_band_t *l_band = 00;
803 opj_tcd_cblk_dec_t* l_cblk = 00;
804 opj_tcd_resolution_t* l_res = &p_tile->comps[p_pi->compno].resolutions[p_pi->resno];
806 OPJ_BYTE *l_header_data = 00;
807 OPJ_BYTE **l_header_data_start = 00;
809 OPJ_UINT32 l_present;
811 if (p_pi->layno == 0) {
812 l_band = l_res->bands;
815 for (bandno = 0; bandno < l_res->numbands; ++bandno) {
816 opj_tcd_precinct_t *l_prc = &l_band->precincts[p_pi->precno];
818 if ( ! ((l_band->x1-l_band->x0 == 0)||(l_band->y1-l_band->y0 == 0)) ) {
819 opj_tgt_reset(l_prc->incltree);
820 opj_tgt_reset(l_prc->imsbtree);
821 l_cblk = l_prc->cblks.dec;
823 l_nb_code_blocks = l_prc->cw * l_prc->ch;
824 for (cblkno = 0; cblkno < l_nb_code_blocks; ++cblkno) {
826 l_cblk->real_num_segs = 0;
837 if (p_tcp->csty & J2K_CP_CSTY_SOP) {
838 if ((*l_current_data) != 0xff || (*(l_current_data + 1) != 0x91)) {
839 /* TODO opj_event_msg(t2->cinfo->event_mgr, EVT_WARNING, "Expected SOP marker\n"); */
844 /** TODO : check the Nsop value */
848 When the marker PPT/PPM is used the packet header are store in PPT/PPM marker
849 This part deal with this caracteristic
850 step 1: Read packet header in the saved structure
851 step 2: Return to codestream for decoding
854 l_bio = opj_bio_create();
859 if (l_cp->ppm == 1) { /* PPM */
860 l_header_data_start = &l_cp->ppm_data;
861 l_header_data = *l_header_data_start;
862 l_modified_length_ptr = &(l_cp->ppm_len);
865 else if (p_tcp->ppt == 1) { /* PPT */
866 l_header_data_start = &(p_tcp->ppt_data);
867 l_header_data = *l_header_data_start;
868 l_modified_length_ptr = &(p_tcp->ppt_len);
870 else { /* Normal Case */
871 l_header_data_start = &(l_current_data);
872 l_header_data = *l_header_data_start;
873 l_remaining_length = p_src_data+p_max_length-l_header_data;
874 l_modified_length_ptr = &(l_remaining_length);
877 opj_bio_init_dec(l_bio, l_header_data,*l_modified_length_ptr);
879 l_present = opj_bio_read(l_bio, 1);
881 /* TODO MSD: no test to control the output of this function*/
882 opj_bio_inalign(l_bio);
883 l_header_data += opj_bio_numbytes(l_bio);
884 opj_bio_destroy(l_bio);
887 if (p_tcp->csty & J2K_CP_CSTY_EPH) {
888 if (p_max_length < 2) {
889 fprintf(stderr, "Not enough space for expected EPH marker\n");
890 } else if ((*l_header_data) != 0xff || (*(l_header_data + 1) != 0x92)) {
891 printf("Error : expected EPH marker\n");
897 l_header_length = (l_header_data - *l_header_data_start);
898 *l_modified_length_ptr -= l_header_length;
899 *l_header_data_start += l_header_length;
902 /* End of packet header position. Currently only represents the distance to start of packet
903 Will be updated later by incrementing with packet start value */
905 p_pack_info->end_ph_pos = (OPJ_INT32)(l_current_data - p_src_data);
909 * p_is_data_present = OPJ_FALSE;
910 *p_data_read = l_current_data - p_src_data;
914 l_band = l_res->bands;
915 for (bandno = 0; bandno < l_res->numbands; ++bandno) {
916 opj_tcd_precinct_t *l_prc = &(l_band->precincts[p_pi->precno]);
918 if ((l_band->x1-l_band->x0 == 0)||(l_band->y1-l_band->y0 == 0)) {
923 l_nb_code_blocks = l_prc->cw * l_prc->ch;
924 l_cblk = l_prc->cblks.dec;
925 for (cblkno = 0; cblkno < l_nb_code_blocks; cblkno++) {
926 OPJ_UINT32 l_included,l_increment, l_segno;
929 /* if cblk not yet included before --> inclusion tagtree */
930 if (!l_cblk->numsegs) {
931 l_included = opj_tgt_decode(l_bio, l_prc->incltree, cblkno, p_pi->layno + 1);
935 l_included = opj_bio_read(l_bio, 1);
938 /* if cblk not included */
940 l_cblk->numnewpasses = 0;
945 /* if cblk not yet included --> zero-bitplane tagtree */
946 if (!l_cblk->numsegs) {
949 while (!opj_tgt_decode(l_bio, l_prc->imsbtree, cblkno, i)) {
953 l_cblk->numbps = l_band->numbps + 1 - i;
954 l_cblk->numlenbits = 3;
957 /* number of coding passes */
958 l_cblk->numnewpasses = opj_t2_getnumpasses(l_bio);
959 l_increment = opj_t2_getcommacode(l_bio);
961 /* length indicator increment */
962 l_cblk->numlenbits += l_increment;
965 if (!l_cblk->numsegs) {
966 if (! opj_t2_init_seg(l_cblk, l_segno, p_tcp->tccps[p_pi->compno].cblksty, 1)) {
967 opj_bio_destroy(l_bio);
972 l_segno = l_cblk->numsegs - 1;
973 if (l_cblk->segs[l_segno].numpasses == l_cblk->segs[l_segno].maxpasses) {
975 if (! opj_t2_init_seg(l_cblk, l_segno, p_tcp->tccps[p_pi->compno].cblksty, 0)) {
976 opj_bio_destroy(l_bio);
981 n = l_cblk->numnewpasses;
984 l_cblk->segs[l_segno].numnewpasses = opj_int_min(l_cblk->segs[l_segno].maxpasses - l_cblk->segs[l_segno].numpasses, n);
985 l_cblk->segs[l_segno].newlen = opj_bio_read(l_bio, l_cblk->numlenbits + opj_uint_floorlog2(l_cblk->segs[l_segno].numnewpasses));
987 n -= l_cblk->segs[l_segno].numnewpasses;
991 if (! opj_t2_init_seg(l_cblk, l_segno, p_tcp->tccps[p_pi->compno].cblksty, 0)) {
992 opj_bio_destroy(l_bio);
1004 if (!opj_bio_inalign(l_bio)) {
1005 opj_bio_destroy(l_bio);
1009 l_header_data += opj_bio_numbytes(l_bio);
1010 opj_bio_destroy(l_bio);
1013 if (p_tcp->csty & J2K_CP_CSTY_EPH) {
1014 if (p_max_length < 2) {
1015 fprintf(stderr, "Not enough space for expected EPH marker\n");
1016 } else if ((*l_header_data) != 0xff || (*(l_header_data + 1) != 0x92)) {
1017 /* TODO opj_event_msg(t2->cinfo->event_mgr, EVT_ERROR, "Expected EPH marker\n"); */
1023 l_header_length = (l_header_data - *l_header_data_start);
1024 *l_modified_length_ptr -= l_header_length;
1025 *l_header_data_start += l_header_length;
1028 /* End of packet header position. Currently only represents the distance to start of packet
1029 Will be updated later by incrementing with packet start value */
1031 p_pack_info->end_ph_pos = (OPJ_INT32)(l_current_data - p_src_data);
1035 *p_is_data_present = OPJ_TRUE;
1036 *p_data_read = l_current_data - p_src_data;
1041 OPJ_BOOL opj_t2_read_packet_data( opj_t2_t* p_t2,
1042 opj_tcd_tile_t *p_tile,
1043 opj_pi_iterator_t *p_pi,
1044 OPJ_BYTE *p_src_data,
1045 OPJ_UINT32 * p_data_read,
1046 OPJ_UINT32 p_max_length,
1047 opj_packet_info_t *pack_info)
1049 OPJ_UINT32 bandno, cblkno;
1050 OPJ_UINT32 l_nb_code_blocks;
1051 OPJ_BYTE *l_current_data = p_src_data;
1052 opj_tcd_band_t *l_band = 00;
1053 opj_tcd_cblk_dec_t* l_cblk = 00;
1054 opj_tcd_resolution_t* l_res = &p_tile->comps[p_pi->compno].resolutions[p_pi->resno];
1056 OPJ_ARG_NOT_USED(p_t2);
1057 OPJ_ARG_NOT_USED(pack_info);
1059 l_band = l_res->bands;
1060 for (bandno = 0; bandno < l_res->numbands; ++bandno) {
1061 opj_tcd_precinct_t *l_prc = &l_band->precincts[p_pi->precno];
1063 if ((l_band->x1-l_band->x0 == 0)||(l_band->y1-l_band->y0 == 0)) {
1068 l_nb_code_blocks = l_prc->cw * l_prc->ch;
1069 l_cblk = l_prc->cblks.dec;
1071 for (cblkno = 0; cblkno < l_nb_code_blocks; ++cblkno) {
1072 opj_tcd_seg_t *l_seg = 00;
1074 if (!l_cblk->numnewpasses) {
1080 if (!l_cblk->numsegs) {
1081 l_seg = l_cblk->segs;
1083 l_cblk->data_current_size = 0;
1086 l_seg = &l_cblk->segs[l_cblk->numsegs - 1];
1088 if (l_seg->numpasses == l_seg->maxpasses) {
1095 if (l_current_data + l_seg->newlen > p_src_data + p_max_length) {
1100 /* we need here a j2k handle to verify if making a check to
1101 the validity of cblocks parameters is selected from user (-W) */
1103 /* let's check that we are not exceeding */
1104 if ((l_cblk->len + l_seg->newlen) > 8192) {
1105 opj_event_msg(p_t2->cinfo, EVT_WARNING,
1106 "JPWL: segment too long (%d) for codeblock %d (p=%d, b=%d, r=%d, c=%d)\n",
1107 l_seg->newlen, cblkno, p_pi->precno, bandno, p_pi->resno, p_pi->compno);
1109 opj_event_msg(p_t2->cinfo, EVT_ERROR, "JPWL: giving up\n");
1112 l_seg->newlen = 8192 - l_cblk->len;
1113 opj_event_msg(p_t2->cinfo, EVT_WARNING, " - truncating segment to %d\n", l_seg->newlen);
1117 #endif /* USE_JPWL */
1118 /* Check if the cblk->data have allocated enough memory */
1119 if ((l_cblk->data_current_size + l_seg->newlen) > l_cblk->data_max_size) {
1120 OPJ_BYTE* new_cblk_data = (OPJ_BYTE*) opj_realloc(l_cblk->data, l_cblk->data_current_size + l_seg->newlen);
1121 if(! new_cblk_data) {
1122 opj_free(l_cblk->data);
1123 l_cblk->data_max_size = 0;
1124 /* opj_event_msg(p_manager, EVT_ERROR, "Not enough memory to realloc code block cata!\n"); */
1127 l_cblk->data_max_size = l_cblk->data_current_size + l_seg->newlen;
1128 l_cblk->data = new_cblk_data;
1131 memcpy(l_cblk->data + l_cblk->data_current_size, l_current_data, l_seg->newlen);
1133 if (l_seg->numpasses == 0) {
1134 l_seg->data = &l_cblk->data;
1135 l_seg->dataindex = l_cblk->data_current_size;
1138 l_current_data += l_seg->newlen;
1139 l_seg->numpasses += l_seg->numnewpasses;
1140 l_cblk->numnewpasses -= l_seg->numnewpasses;
1142 l_seg->real_num_passes = l_seg->numpasses;
1143 l_cblk->data_current_size += l_seg->newlen;
1144 l_seg->len += l_seg->newlen;
1146 if (l_cblk->numnewpasses > 0) {
1150 } while (l_cblk->numnewpasses > 0);
1152 l_cblk->real_num_segs = l_cblk->numsegs;
1154 } /* next code_block */
1159 *(p_data_read) = l_current_data - p_src_data;
1164 OPJ_BOOL opj_t2_skip_packet_data( opj_t2_t* p_t2,
1165 opj_tcd_tile_t *p_tile,
1166 opj_pi_iterator_t *p_pi,
1167 OPJ_UINT32 * p_data_read,
1168 OPJ_UINT32 p_max_length,
1169 opj_packet_info_t *pack_info)
1171 OPJ_UINT32 bandno, cblkno;
1172 OPJ_UINT32 l_nb_code_blocks;
1173 opj_tcd_band_t *l_band = 00;
1174 opj_tcd_cblk_dec_t* l_cblk = 00;
1175 opj_tcd_resolution_t* l_res = &p_tile->comps[p_pi->compno].resolutions[p_pi->resno];
1177 OPJ_ARG_NOT_USED(p_t2);
1178 OPJ_ARG_NOT_USED(pack_info);
1181 l_band = l_res->bands;
1183 for (bandno = 0; bandno < l_res->numbands; ++bandno) {
1184 opj_tcd_precinct_t *l_prc = &l_band->precincts[p_pi->precno];
1186 if ((l_band->x1-l_band->x0 == 0)||(l_band->y1-l_band->y0 == 0)) {
1191 l_nb_code_blocks = l_prc->cw * l_prc->ch;
1192 l_cblk = l_prc->cblks.dec;
1194 for (cblkno = 0; cblkno < l_nb_code_blocks; ++cblkno) {
1195 opj_tcd_seg_t *l_seg = 00;
1197 if (!l_cblk->numnewpasses) {
1203 if (!l_cblk->numsegs) {
1204 l_seg = l_cblk->segs;
1206 l_cblk->data_current_size = 0;
1209 l_seg = &l_cblk->segs[l_cblk->numsegs - 1];
1211 if (l_seg->numpasses == l_seg->maxpasses) {
1218 if (* p_data_read + l_seg->newlen > p_max_length) {
1223 /* we need here a j2k handle to verify if making a check to
1224 the validity of cblocks parameters is selected from user (-W) */
1226 /* let's check that we are not exceeding */
1227 if ((l_cblk->len + l_seg->newlen) > 8192) {
1228 opj_event_msg(p_t2->cinfo, EVT_WARNING,
1229 "JPWL: segment too long (%d) for codeblock %d (p=%d, b=%d, r=%d, c=%d)\n",
1230 l_seg->newlen, cblkno, p_pi->precno, bandno, p_pi->resno, p_pi->compno);
1232 opj_event_msg(p_t2->cinfo, EVT_ERROR, "JPWL: giving up\n");
1235 l_seg->newlen = 8192 - l_cblk->len;
1236 opj_event_msg(p_t2->cinfo, EVT_WARNING, " - truncating segment to %d\n", l_seg->newlen);
1240 #endif /* USE_JPWL */
1241 *(p_data_read) += l_seg->newlen;
1243 l_seg->numpasses += l_seg->numnewpasses;
1244 l_cblk->numnewpasses -= l_seg->numnewpasses;
1245 if (l_cblk->numnewpasses > 0)
1250 } while (l_cblk->numnewpasses > 0);
1262 OPJ_BOOL opj_t2_init_seg( opj_tcd_cblk_dec_t* cblk,
1267 opj_tcd_seg_t* seg = 00;
1268 OPJ_UINT32 l_nb_segs = index + 1;
1270 if (l_nb_segs > cblk->m_current_max_segs) {
1271 opj_tcd_seg_t* new_segs;
1272 cblk->m_current_max_segs += OPJ_J2K_DEFAULT_NB_SEGS;
1274 new_segs = (opj_tcd_seg_t*) opj_realloc(cblk->segs, cblk->m_current_max_segs * sizeof(opj_tcd_seg_t));
1276 opj_free(cblk->segs);
1278 cblk->m_current_max_segs = 0;
1279 /* opj_event_msg(p_manager, EVT_ERROR, "Not enough memory to initialize segment %d\n", l_nb_segs); */
1282 cblk->segs = new_segs;
1285 seg = &cblk->segs[index];
1286 memset(seg,0,sizeof(opj_tcd_seg_t));
1288 if (cblksty & J2K_CCP_CBLKSTY_TERMALL) {
1291 else if (cblksty & J2K_CCP_CBLKSTY_LAZY) {
1293 seg->maxpasses = 10;
1295 seg->maxpasses = (((seg - 1)->maxpasses == 1) || ((seg - 1)->maxpasses == 10)) ? 2 : 1;
1298 seg->maxpasses = 109;