2 * Copyright (c) 2001-2003, David Janssens
3 * Copyright (c) 2002-2003, Yannick Verschueren
4 * Copyright (c) 2003-2005, Francois Devaux and Antonin Descampe
5 * Copyright (c) 2005, Herv� Drolon, FreeImage Team
6 * Copyright (c) 2002-2005, Communications and remote sensing Laboratory, Universite catholique de Louvain, Belgium
7 * Copyright (c) 2005-2006, Dept. of Electronic and Information Engineering, Universita' degli Studi di Perugia, Italy
10 * Redistribution and use in source and binary forms, with or without
11 * modification, are permitted provided that the following conditions
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.
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.
34 #include "../libopenjpeg/opj_includes.h"
37 /** Minimum and maximum values for the double->pfp conversion */
39 #define MAX_V1 17293822569102704640.0
40 #define MIN_V2 0.000030517578125
41 #define MAX_V2 131040.0
43 /** conversion between a double precision floating point
44 number and the corresponding pseudo-floating point used
45 to represent sensitivity values
46 @param V the double precision value
47 @param bytes the number of bytes of the representation
48 @return the pseudo-floating point value (cast accordingly)
50 unsigned short int jpwl_double_to_pfp(double V, int bytes);
52 /** conversion between a pseudo-floating point used
53 to represent sensitivity values and the corresponding
54 double precision floating point number
55 @param em the pseudo-floating point value (cast accordingly)
56 @param bytes the number of bytes of the representation
57 @return the double precision value
59 double jpwl_pfp_to_double(unsigned short int em, int bytes);
61 /*-------------------------------------------------------------*/
63 int jpwl_markcomp(const void *arg1, const void *arg2)
65 /* Compare the two markers' positions */
66 double diff = (((jpwl_marker_t *) arg1)->dpos - ((jpwl_marker_t *) arg2)->dpos);
76 int jpwl_epbs_add(opj_j2k_t *j2k, jpwl_marker_t *jwmarker, int *jwmarker_num,
77 bool latest, bool packed, bool insideMH, int *idx, int hprot,
78 double place_pos, int tileno,
79 unsigned long int pre_len, unsigned long int post_len) {
81 jpwl_epb_ms_t *epb_mark = NULL;
83 int k_pre, k_post, n_pre, n_post;
85 unsigned long int L1, L2, dL4, max_postlen, epbs_len = 0;
87 /* We find RS(n,k) for EPB parms and pre-data, if any */
88 if (insideMH && (*idx == 0)) {
92 } else if (!insideMH && (*idx == 0)) {
97 /* Following EPBs in MH or TH */
102 /* Find lengths, Figs. B3 and B4 */
103 /* size of pre data: pre_buf(pre_len) + EPB(2) + Lepb(2) + Depb(1) + LDPepb(4) + Pepb(4) */
106 /* size of pre-data redundancy */
107 /* (redundancy per codeword) * (number of codewords, rounded up) */
108 L2 = (n_pre - k_pre) * (unsigned long int) ceil((double) L1 / (double) k_pre);
110 /* Find protection type for post data and its associated redundancy field length*/
111 if ((hprot == 16) || (hprot == 32)) {
112 /* there is a CRC for post-data */
114 n_post = post_len + (hprot >> 3);
115 /*L3 = hprot >> 3;*/ /* 2 (CRC-16) or 4 (CRC-32) bytes */
117 } else if ((hprot >= 37) && (hprot <= 128)) {
118 /* there is a RS for post-data */
123 /* Use predefined codes */
128 /* Create the EPB(s) */
129 while (post_len > 0) {
131 /* maximum postlen in order to respect EPB size
132 (we use JPWL_MAXIMUM_EPB_ROOM instead of 65535 for keeping room for EPB parms)*/
133 /* (message word size) * (number of containable parity words) */
134 max_postlen = k_post * (unsigned long int) floor((double) JPWL_MAXIMUM_EPB_ROOM / (double) (n_post - k_post));
136 /* maximum postlen in order to respect EPB size */
138 /* (we use (JPWL_MAXIMUM_EPB_ROOM - L2) instead of 65535 for keeping room for EPB parms + pre-data) */
139 /* (message word size) * (number of containable parity words) */
140 max_postlen = k_post * (unsigned long int) floor((double) (JPWL_MAXIMUM_EPB_ROOM - L2) / (double) (n_post - k_post));
143 /* (we use JPWL_MAXIMUM_EPB_ROOM instead of 65535 for keeping room for EPB parms) */
144 /* (message word size) * (number of containable parity words) */
145 max_postlen = k_post * (unsigned long int) floor((double) JPWL_MAXIMUM_EPB_ROOM / (double) (n_post - k_post));
147 /* null protection case */
148 /* the max post length can be as large as the LDPepb field can host */
150 max_postlen = INT_MAX;
153 dL4 = min(max_postlen, post_len);
155 if (epb_mark = jpwl_epb_create(
156 j2k, /* this encoder handle */
157 latest ? (dL4 < max_postlen) : false, /* is it the latest? */
158 packed, /* is it packed? */
159 tileno, /* we are in TPH */
160 *idx, /* its index */
161 hprot, /* protection type parameters of following data */
162 0, /* pre-data: nothing for now */
163 dL4 /* post-data: the stub computed previously */
166 /* Add this marker to the 'insertanda' list */
167 if (*jwmarker_num < JPWL_MAX_NO_MARKERS) {
168 jwmarker[*jwmarker_num].id = J2K_MS_EPB; /* its type */
169 jwmarker[*jwmarker_num].epbmark = epb_mark; /* the EPB */
170 jwmarker[*jwmarker_num].pos = (int) place_pos; /* after SOT */
171 jwmarker[*jwmarker_num].dpos = place_pos + 0.0000001 * (double)(*idx); /* not very first! */
172 jwmarker[*jwmarker_num].len = epb_mark->Lepb; /* its length */
173 jwmarker[*jwmarker_num].len_ready = true; /* ready */
174 jwmarker[*jwmarker_num].pos_ready = true; /* ready */
175 jwmarker[*jwmarker_num].parms_ready = true; /* ready */
176 jwmarker[*jwmarker_num].data_ready = false; /* not ready */
180 /* increment epb index */
183 /* decrease postlen */
186 /* increase the total length of EPBs */
187 epbs_len += epb_mark->Lepb + 2;
190 /* ooops, problems */
191 opj_event_msg(j2k->cinfo, EVT_ERROR, "Could not create TPH EPB for UEP in tile %d\n", tileno);
199 jpwl_epb_ms_t *jpwl_epb_create(opj_j2k_t *j2k, bool latest, bool packed, int tileno, int idx, int hprot,
200 unsigned long int pre_len, unsigned long int post_len) {
202 jpwl_epb_ms_t *epb = NULL;
203 unsigned short int data_len = 0;
204 unsigned short int L2, L3;
205 unsigned long int L1, L4;
206 unsigned char *predata_in = NULL;
208 bool insideMH = (tileno == -1);
211 if (!(epb = (jpwl_epb_ms_t *) opj_malloc((size_t) 1 * sizeof (jpwl_epb_ms_t)))) {
212 opj_event_msg(j2k->cinfo, EVT_ERROR, "Could not allocate room for one EPB MS\n");
216 /* We set RS(n,k) for EPB parms and pre-data, if any */
217 if (insideMH && (idx == 0)) {
218 /* First EPB in MH */
221 } else if (!insideMH && (idx == 0)) {
222 /* First EPB in TH */
226 /* Following EPBs in MH or TH */
231 /* Find lengths, Figs. B3 and B4 */
232 /* size of pre data: pre_buf(pre_len) + EPB(2) + Lepb(2) + Depb(1) + LDPepb(4) + Pepb(4) */
234 epb->pre_len = pre_len;
236 /* size of pre-data redundancy */
237 /* (redundancy per codeword) * (number of codewords, rounded up) */
238 L2 = (epb->n_pre - epb->k_pre) * (unsigned short int) ceil((double) L1 / (double) epb->k_pre);
240 /* length of post-data */
242 epb->post_len = post_len;
244 /* Find protection type for post data and its associated redundancy field length*/
245 if ((hprot == 16) || (hprot == 32)) {
246 /* there is a CRC for post-data */
247 epb->Pepb = 0x10000000 | ((unsigned long int) hprot >> 5); /* 0=CRC-16, 1=CRC-32 */
248 epb->k_post = post_len;
249 epb->n_post = post_len + (hprot >> 3);
250 /*L3 = hprot >> 3;*/ /* 2 (CRC-16) or 4 (CRC-32) bytes */
252 } else if ((hprot >= 37) && (hprot <= 128)) {
253 /* there is a RS for post-data */
254 epb->Pepb = 0x20000020 | (((unsigned long int) hprot & 0x000000FF) << 8);
258 } else if (hprot == 1) {
259 /* Use predefined codes */
260 epb->Pepb = (unsigned long int) 0x00000000;
261 epb->n_post = epb->n_pre;
262 epb->k_post = epb->k_pre;
264 } else if (hprot == 0) {
265 /* Placeholder EPB: only protects its parameters, no protection method */
266 epb->Pepb = (unsigned long int) 0xFFFFFFFF;
271 opj_event_msg(j2k->cinfo, EVT_ERROR, "Invalid protection value for EPB h = %d\n", hprot);
277 /* (redundancy per codeword) * (number of codewords, rounded up) */
278 L3 = (epb->n_post - epb->k_post) * (unsigned short int) ceil((double) L4 / (double) epb->k_post);
281 epb->tileno = tileno;
283 /* Fill some fields of the EPB */
285 /* total length of the EPB MS (less the EPB marker itself): */
286 /* Lepb(2) + Depb(1) + LDPepb(4) + Pepb(4) + pre_redundancy + post-redundancy */
287 epb->Lepb = 11 + L2 + L3;
290 epb->Depb = ((packed & 0x0001) << 7) | ((latest & 0x0001) << 6) | (idx & 0x003F);
292 /* length of data protected by EPB: */
293 epb->LDPepb = L1 + L4;
298 void jpwl_epb_write(opj_j2k_t *j2k, jpwl_epb_ms_t *epb, unsigned char *buf) {
301 *(buf++) = (unsigned char) (J2K_MS_EPB >> 8);
302 *(buf++) = (unsigned char) (J2K_MS_EPB >> 0);
305 *(buf++) = (unsigned char) (epb->Lepb >> 8);
306 *(buf++) = (unsigned char) (epb->Lepb >> 0);
309 *(buf++) = (unsigned char) (epb->Depb >> 0);
312 *(buf++) = (unsigned char) (epb->LDPepb >> 24);
313 *(buf++) = (unsigned char) (epb->LDPepb >> 16);
314 *(buf++) = (unsigned char) (epb->LDPepb >> 8);
315 *(buf++) = (unsigned char) (epb->LDPepb >> 0);
318 *(buf++) = (unsigned char) (epb->Pepb >> 24);
319 *(buf++) = (unsigned char) (epb->Pepb >> 16);
320 *(buf++) = (unsigned char) (epb->Pepb >> 8);
321 *(buf++) = (unsigned char) (epb->Pepb >> 0);
324 /*memcpy(buf, epb->data, (size_t) epb->Lepb - 11);*/
325 memset(buf, 0, (size_t) epb->Lepb - 11);
327 /* update markers struct */
328 j2k_add_marker(j2k->cstr_info, J2K_MS_EPB, -1, epb->Lepb + 2);
333 jpwl_epc_ms_t *jpwl_epc_create(opj_j2k_t *j2k, bool esd_on, bool red_on, bool epb_on, bool info_on) {
335 jpwl_epc_ms_t *epc = NULL;
338 if (!(epc = (jpwl_epc_ms_t *) malloc((size_t) 1 * sizeof (jpwl_epc_ms_t)))) {
339 opj_event_msg(j2k->cinfo, EVT_ERROR, "Could not allocate room for EPC MS\n");
343 /* Set the EPC parameters */
344 epc->esd_on = esd_on;
345 epc->epb_on = epb_on;
346 epc->red_on = red_on;
347 epc->info_on = info_on;
349 /* Fill the EPC fields with default values */
352 epc->DL = 0x00000000;
353 epc->Pepc = ((j2k->cp->esd_on & 0x0001) << 4) | ((j2k->cp->red_on & 0x0001) << 5) |
354 ((j2k->cp->epb_on & 0x0001) << 6) | ((j2k->cp->info_on & 0x0001) << 7);
359 bool jpwl_epb_fill(opj_j2k_t *j2k, jpwl_epb_ms_t *epb, unsigned char *buf, unsigned char *post_buf) {
361 unsigned long int L1, L2, L3, L4;
363 unsigned long int P, NN_P;
365 /* Operating buffer */
366 static unsigned char codeword[NN], *parityword;
368 unsigned char *L1_buf, *L2_buf;
369 /* these ones are static, since we need to keep memory of
370 the exact place from one call to the other */
371 static unsigned char *L3_buf, *L4_buf;
373 /* some consistency check */
375 opj_event_msg(j2k->cinfo, EVT_ERROR, "There is no operating buffer for EPBs\n");
379 if (!post_buf && !L4_buf) {
380 opj_event_msg(j2k->cinfo, EVT_ERROR, "There is no operating buffer for EPBs data\n");
385 * Compute parity bytes on pre-data, ALWAYS present (at least only for EPB parms)
388 /* Initialize RS structures */
389 P = epb->n_pre - epb->k_pre;
391 memset(codeword, 0, NN);
392 parityword = codeword + NN_P;
395 /* pre-data begins pre_len bytes before of EPB buf */
396 L1_buf = buf - epb->pre_len;
397 L1 = epb->pre_len + 13;
399 /* redundancy for pre-data begins immediately after EPB parms */
401 L2 = (epb->n_pre - epb->k_pre) * (unsigned short int) ceil((double) L1 / (double) epb->k_pre);
404 the position of L4 buffer can be:
405 1) passed as a parameter: in that case use it
406 2) null: in that case use the previous (static) one
412 /* post-data redundancy begins immediately after pre-data redundancy */
413 L3_buf = L2_buf + L2;
414 L3 = (epb->n_post - epb->k_post) * (unsigned short int) ceil((double) L4 / (double) epb->k_post);
416 /* let's check whether EPB length is sufficient to contain all these data */
417 if (epb->Lepb < (11 + L2 + L3))
418 opj_event_msg(j2k->cinfo, EVT_ERROR, "There is no room in EPB data field for writing redundancy data\n");
419 /*printf("Env. %d, nec. %d (%d + %d)\n", epb->Lepb - 11, L2 + L3, L2, L3);*/
421 /* Compute redundancy of pre-data message words */
425 /* copy message data into codeword buffer */
426 if (remaining < epb->k_pre) {
427 /* the last message word is zero-padded */
428 memset(codeword, 0, NN);
429 memcpy(codeword, L1_buf, remaining);
434 memcpy(codeword, L1_buf, epb->k_pre);
435 L1_buf += epb->k_pre;
436 remaining -= epb->k_pre;
440 /* Encode the buffer and obtain parity bytes */
441 if (encode_rs(codeword, parityword))
442 opj_event_msg(j2k->cinfo, EVT_WARNING,
443 "Possible encoding error in codeword @ position #%d\n", (L1_buf - buf) / epb->k_pre);
445 /* copy parity bytes only in redundancy buffer */
446 memcpy(L2_buf, parityword, P);
448 /* advance parity buffer */
453 * Compute parity bytes on post-data, may be absent if there are no data
455 /*printf("Hprot is %d (tileno=%d, k_pre=%d, n_pre=%d, k_post=%d, n_post=%d, pre_len=%d, post_len=%d)\n",
456 epb->hprot, epb->tileno, epb->k_pre, epb->n_pre, epb->k_post, epb->n_post, epb->pre_len,
458 if (epb->hprot < 0) {
460 /* there should be no EPB */
462 } else if (epb->hprot == 0) {
464 /* no protection for the data */
466 L4_buf += epb->post_len;
468 } else if (epb->hprot == 16) {
471 unsigned short int mycrc = 0x0000;
473 /* compute the CRC field (excluding itself) */
476 jpwl_updateCRC16(&mycrc, *(L4_buf++));
478 /* write the CRC field */
479 *(L3_buf++) = (unsigned char) (mycrc >> 8);
480 *(L3_buf++) = (unsigned char) (mycrc >> 0);
482 } else if (epb->hprot == 32) {
485 unsigned long int mycrc = 0x00000000;
487 /* compute the CRC field (excluding itself) */
490 jpwl_updateCRC32(&mycrc, *(L4_buf++));
492 /* write the CRC field */
493 *(L3_buf++) = (unsigned char) (mycrc >> 24);
494 *(L3_buf++) = (unsigned char) (mycrc >> 16);
495 *(L3_buf++) = (unsigned char) (mycrc >> 8);
496 *(L3_buf++) = (unsigned char) (mycrc >> 0);
502 /* Initialize RS structures */
503 P = epb->n_post - epb->k_post;
505 memset(codeword, 0, NN);
506 parityword = codeword + NN_P;
509 /* Compute redundancy of post-data message words */
513 /* copy message data into codeword buffer */
514 if (remaining < epb->k_post) {
515 /* the last message word is zero-padded */
516 memset(codeword, 0, NN);
517 memcpy(codeword, L4_buf, remaining);
522 memcpy(codeword, L4_buf, epb->k_post);
523 L4_buf += epb->k_post;
524 remaining -= epb->k_post;
528 /* Encode the buffer and obtain parity bytes */
529 if (encode_rs(codeword, parityword))
530 opj_event_msg(j2k->cinfo, EVT_WARNING,
531 "Possible encoding error in codeword @ position #%d\n", (L4_buf - buf) / epb->k_post);
533 /* copy parity bytes only in redundancy buffer */
534 memcpy(L3_buf, parityword, P);
536 /* advance parity buffer */
546 bool jpwl_correct(opj_j2k_t *j2k) {
548 opj_cio_t *cio = j2k->cio;
550 static bool mh_done = false;
551 int mark_pos, id, len, skips, sot_pos;
552 unsigned long int Psot = 0;
554 /* go back to marker position */
555 mark_pos = cio_tell(cio) - 2;
556 cio_seek(cio, mark_pos);
558 if ((j2k->state == J2K_STATE_MHSOC) && !mh_done) {
560 int mark_val = 0, skipnum = 0;
564 first thing to do, if we are here, is to look whether
565 51 (skipnum) positions ahead there is an EPB, in case of MH
569 first thing to do, if we are here, is to look whether
570 45 (skipnum) positions ahead there is an EPB, in case of MH
572 /* SIZ SIZ_FIELDS SIZ_COMPS FOLLOWING_MARKER */
573 skipnum = 2 + 38 + 3 * j2k->cp->exp_comps + 2;
574 if ((cio->bp + skipnum) < cio->end) {
576 cio_skip(cio, skipnum);
578 /* check that you are not going beyond the end of codestream */
580 /* call EPB corrector */
581 status = jpwl_epb_correct(j2k, /* J2K decompressor handle */
582 cio->bp, /* pointer to EPB in codestream buffer */
583 0, /* EPB type: MH */
584 skipnum, /* length of pre-data */
585 -1, /* length of post-data: -1 means auto */
590 /* read the marker value */
591 mark_val = (*(cio->bp) << 8) | *(cio->bp + 1);
593 if (status && (mark_val == J2K_MS_EPB)) {
603 if (true /*(j2k->state == J2K_STATE_TPHSOT) || (j2k->state == J2K_STATE_TPH)*/) {
604 /* else, look if 12 positions ahead there is an EPB, in case of TPH */
605 cio_seek(cio, mark_pos);
606 if ((cio->bp + 12) < cio->end) {
610 /* call EPB corrector */
611 status = jpwl_epb_correct(j2k, /* J2K decompressor handle */
612 cio->bp, /* pointer to EPB in codestream buffer */
613 1, /* EPB type: TPH */
614 12, /* length of pre-data */
615 -1, /* length of post-data: -1 means auto */
627 /* for now, don't use this code */
629 /* else, look if here is an EPB, in case of other */
631 /* it cannot stay before the first MH EPB */
632 cio_seek(cio, mark_pos);
635 /* call EPB corrector */
636 status = jpwl_epb_correct(j2k, /* J2K decompressor handle */
637 cio->bp, /* pointer to EPB in codestream buffer */
638 2, /* EPB type: TPH */
639 0, /* length of pre-data */
640 -1, /* length of post-data: -1 means auto */
649 /* nope, no EPBs probably, or they are so damaged that we can give up */
654 /* AN ATTEMPT OF PARSER */
655 /* NOT USED ACTUALLY */
657 /* go to the beginning of the file */
661 j2k->state = J2K_STATE_MHSOC;
663 /* cycle all over the markers */
664 while (cio_tell(cio) < cio->length) {
666 /* read the marker */
667 mark_pos = cio_tell(cio);
668 id = cio_read(cio, 2);
671 printf("Marker@%d: %X\n", cio_tell(cio) - 2, id);
673 /* do an action in response to the read marker */
680 j2k->state = J2K_STATE_MHSIZ;
687 j2k->state = J2K_STATE_MT;
692 /* particular case of SOD */
694 len = Psot - (mark_pos - sot_pos) - 2;
702 j2k->state = J2K_STATE_TPH;
703 sot_pos = mark_pos; /* position of SOT */
704 len = cio_read(cio, 2); /* read the length field */
705 cio_skip(cio, 2); /* this field is unnecessary */
706 Psot = cio_read(cio, 4); /* tile length */
712 j2k->state = J2K_STATE_MH;
713 /* read the length field */
714 len = cio_read(cio, 2);
720 /* read the length field */
721 len = cio_read(cio, 2);
727 /* skip to marker's end */
728 cio_skip(cio, skips);
735 bool jpwl_epb_correct(opj_j2k_t *j2k, unsigned char *buffer, int type, int pre_len, int post_len, int *conn,
736 unsigned char **L4_bufp) {
738 /* Operating buffer */
739 unsigned char codeword[NN], *parityword;
741 unsigned long int P, NN_P;
742 unsigned long int L1, L4;
743 int remaining, n_pre, k_pre, n_post, k_post;
747 int orig_pos = cio_tell(j2k->cio);
749 unsigned char *L1_buf, *L2_buf;
750 unsigned char *L3_buf, *L4_buf;
752 unsigned long int LDPepb, Pepb;
753 unsigned short int Lepb;
756 int myconn, errnum = 0;
757 bool errflag = false;
759 opj_cio_t *cio = j2k->cio;
761 /* check for common errors */
763 opj_event_msg(j2k->cinfo, EVT_ERROR, "The EPB pointer is a NULL buffer\n");
770 /* pre-data correction */
792 /* automatic setup */
797 opj_event_msg(j2k->cinfo, EVT_ERROR, "Unknown expected EPB type\n");
803 /* Initialize RS structures */
806 tt = (int) floor((float) P / 2.0F); /* correction capability of the code */
807 memset(codeword, 0, NN);
808 parityword = codeword + NN_P;
811 /* Correct pre-data message words */
812 L1_buf = buffer - pre_len;
813 L2_buf = buffer + 13;
817 /* always zero-pad codewords */
818 /* (this is required, since after decoding the zeros in the long codeword
819 could change, and keep unchanged in subsequent calls) */
820 memset(codeword, 0, NN);
822 /* copy codeword buffer into message bytes */
823 if (remaining < k_pre)
824 memcpy(codeword, L1_buf, remaining);
826 memcpy(codeword, L1_buf, k_pre);
828 /* copy redundancy buffer in parity bytes */
829 memcpy(parityword, L2_buf, P);
831 /* Decode the buffer and possibly obtain corrected bytes */
832 status = eras_dec_rs(codeword, NULL, 0);
835 opj_event_msg(j2k->cinfo, EVT_WARNING,
836 "Possible decoding error in codeword @ position #%d\n", (L1_buf - buffer) / k_pre);*/
838 /* we can try to safely get out from the function:
839 if we are here, either this is not an EPB or the first codeword
840 is too damaged to be helpful */
843 } else if (status == 0) {
845 opj_event_msg(j2k->cinfo, EVT_INFO, "codeword is correctly decoded\n");*/
847 } else if (status <= tt) {
848 /* it has corrected 0 <= errs <= tt */
850 opj_event_msg(j2k->cinfo, EVT_WARNING, "%d errors corrected in codeword\n", status);*/
855 opj_event_msg(j2k->cinfo, EVT_WARNING, "EPB correction capability exceeded\n");
861 /* advance parity buffer */
862 if ((status >= 0) && (status <= tt))
863 /* copy back corrected parity only if all is OK */
864 memcpy(L2_buf, parityword, P);
867 /* advance message buffer */
868 if (remaining < k_pre) {
869 if ((status >= 0) && (status <= tt))
870 /* copy back corrected data only if all is OK */
871 memcpy(L1_buf, codeword, remaining);
876 if ((status >= 0) && (status <= tt))
877 /* copy back corrected data only if all is OK */
878 memcpy(L1_buf, codeword, k_pre);
889 opj_event_msg(j2k->cinfo, EVT_INFO, "+ %d symbol errors corrected (Ps=%.1e)\n", errnum,
890 (float) errnum / ((float) n_pre * (float) L1 / (float) k_pre));*/
892 /*opj_event_msg(j2k->cinfo, EVT_INFO, "+ there were unrecoverable errors\n");*/
898 /* presumably, now, EPB parameters are correct */
901 /* Simply read the EPB parameters */
904 cio_skip(cio, 2); /* the marker */
905 Lepb = cio_read(cio, 2);
906 Depb = cio_read(cio, 1);
907 LDPepb = cio_read(cio, 4);
908 Pepb = cio_read(cio, 4);
910 /* What does Pepb tells us about the protection method? */
911 if (((Pepb & 0xF0000000) >> 28) == 0)
912 sprintf(str1, "pred"); /* predefined */
913 else if (((Pepb & 0xF0000000) >> 28) == 1)
914 sprintf(str1, "crc-%d", 16 * ((Pepb & 0x00000001) + 1)); /* CRC mode */
915 else if (((Pepb & 0xF0000000) >> 28) == 2)
916 sprintf(str1, "rs(%d,32)", (Pepb & 0x0000FF00) >> 8); /* RS mode */
917 else if (Pepb == 0xFFFFFFFF)
918 sprintf(str1, "nometh"); /* RS mode */
920 sprintf(str1, "unknown"); /* unknown */
922 /* Now we write them to screen */
923 if (!conn && post_len)
924 opj_event_msg(j2k->cinfo, EVT_INFO,
925 "EPB(%d): (%sl, %sp, %u), %lu, %s\n",
927 (Depb & 0x40) ? "" : "n", /* latest EPB or not? */
928 (Depb & 0x80) ? "" : "n", /* packed or unpacked EPB? */
929 (Depb & 0x3F), /* EPB index value */
930 LDPepb, /*length of the data protected by the EPB */
931 str1); /* protection method */
934 /* well, we need to investigate how long is the connected length of packed EPBs */
936 if ((Depb & 0x40) == 0) /* not latest in header */
937 jpwl_epb_correct(j2k, /* J2K decompressor handle */
938 buffer + Lepb + 2, /* pointer to next EPB in codestream buffer */
939 2, /* EPB type: should be of other type */
940 0, /* only EPB fields */
941 0, /* do not look after */
949 printf("connected = %d\n", myconn);*/
951 /*cio_seek(j2k->cio, orig_pos);
955 the position of L4 buffer is at the end of currently connected EPBs
958 L4_buf = buffer + myconn;
959 else if (!(*L4_bufp))
960 L4_buf = buffer + myconn;
964 L4 = LDPepb - pre_len - 13;
965 else if (post_len == 0)
972 /* Do a further check here on the read parameters */
973 if (L4 > (unsigned long) cio_numbytesleft(j2k->cio))
977 /* we are ready for decoding the remaining data */
978 if (((Pepb & 0xF0000000) >> 28) == 1) {
980 if ((16 * ((Pepb & 0x00000001) + 1)) == 16) {
983 unsigned short int mycrc = 0x0000, filecrc = 0x0000;
985 /* compute the CRC field */
988 jpwl_updateCRC16(&mycrc, *(L4_buf++));
990 /* read the CRC field */
991 filecrc = *(L3_buf++) << 8;
992 filecrc |= *(L3_buf++);
994 /* check the CRC field */
995 if (mycrc == filecrc) {
997 opj_event_msg(j2k->cinfo, EVT_INFO, "- CRC is OK\n");
1000 opj_event_msg(j2k->cinfo, EVT_WARNING, "- CRC is KO (r=%d, c=%d)\n", filecrc, mycrc);
1005 if ((16 * ((Pepb & 0x00000001) + 1)) == 32) {
1008 unsigned long int mycrc = 0x00000000, filecrc = 0x00000000;
1010 /* compute the CRC field */
1013 jpwl_updateCRC32(&mycrc, *(L4_buf++));
1015 /* read the CRC field */
1016 filecrc = *(L3_buf++) << 24;
1017 filecrc |= *(L3_buf++) << 16;
1018 filecrc |= *(L3_buf++) << 8;
1019 filecrc |= *(L3_buf++);
1021 /* check the CRC field */
1022 if (mycrc == filecrc) {
1024 opj_event_msg(j2k->cinfo, EVT_INFO, "- CRC is OK\n");
1027 opj_event_msg(j2k->cinfo, EVT_WARNING, "- CRC is KO (r=%d, c=%d)\n", filecrc, mycrc);
1032 } else if (Pepb == 0xFFFFFFFF) {
1035 /* advance without doing anything */
1040 } else if ((((Pepb & 0xF0000000) >> 28) == 2) || (((Pepb & 0xF0000000) >> 28) == 0)) {
1041 /* RS coding here */
1043 if (((Pepb & 0xF0000000) >> 28) == 0) {
1051 n_post = (Pepb & 0x0000FF00) >> 8;
1054 /* Initialize RS structures */
1055 P = n_post - k_post;
1057 tt = (int) floor((float) P / 2.0F); /* again, correction capability */
1058 memset(codeword, 0, NN);
1059 parityword = codeword + NN_P;
1062 /* Correct post-data message words */
1063 /*L4_buf = buffer + Lepb + 2;*/
1068 /* always zero-pad codewords */
1069 /* (this is required, since after decoding the zeros in the long codeword
1070 could change, and keep unchanged in subsequent calls) */
1071 memset(codeword, 0, NN);
1073 /* copy codeword buffer into message bytes */
1074 if (remaining < k_post)
1075 memcpy(codeword, L4_buf, remaining);
1077 memcpy(codeword, L4_buf, k_post);
1079 /* copy redundancy buffer in parity bytes */
1080 memcpy(parityword, L3_buf, P);
1082 /* Decode the buffer and possibly obtain corrected bytes */
1083 status = eras_dec_rs(codeword, NULL, 0);
1086 opj_event_msg(j2k->cinfo, EVT_WARNING,
1087 "Possible decoding error in codeword @ position #%d\n", (L4_buf - (buffer + Lepb + 2)) / k_post);*/
1090 } else if (status == 0) {
1092 opj_event_msg(j2k->cinfo, EVT_INFO, "codeword is correctly decoded\n");*/
1094 } else if (status <= tt) {
1096 opj_event_msg(j2k->cinfo, EVT_WARNING, "%d errors corrected in codeword\n", status);*/
1101 opj_event_msg(j2k->cinfo, EVT_WARNING, "EPB correction capability exceeded\n");
1107 /* advance parity buffer */
1108 if ((status >= 0) && (status <= tt))
1109 /* copy back corrected data only if all is OK */
1110 memcpy(L3_buf, parityword, P);
1113 /* advance message buffer */
1114 if (remaining < k_post) {
1115 if ((status >= 0) && (status <= tt))
1116 /* copy back corrected data only if all is OK */
1117 memcpy(L4_buf, codeword, remaining);
1118 L4_buf += remaining;
1122 if ((status >= 0) && (status <= tt))
1123 /* copy back corrected data only if all is OK */
1124 memcpy(L4_buf, codeword, k_post);
1126 remaining -= k_post;
1132 /* give back the L4_buf address */
1140 opj_event_msg(j2k->cinfo, EVT_INFO, "- %d symbol errors corrected (Ps=%.1e)\n", errnum,
1141 (float) errnum / (float) LDPepb);
1143 opj_event_msg(j2k->cinfo, EVT_INFO, "- there were unrecoverable errors\n");
1147 cio_seek(j2k->cio, orig_pos);
1152 void jpwl_epc_write(opj_j2k_t *j2k, jpwl_epc_ms_t *epc, unsigned char *buf) {
1155 *(buf++) = (unsigned char) (J2K_MS_EPC >> 8);
1156 *(buf++) = (unsigned char) (J2K_MS_EPC >> 0);
1159 *(buf++) = (unsigned char) (epc->Lepc >> 8);
1160 *(buf++) = (unsigned char) (epc->Lepc >> 0);
1163 *(buf++) = (unsigned char) (epc->Pcrc >> 8);
1164 *(buf++) = (unsigned char) (epc->Pcrc >> 0);
1167 *(buf++) = (unsigned char) (epc->DL >> 24);
1168 *(buf++) = (unsigned char) (epc->DL >> 16);
1169 *(buf++) = (unsigned char) (epc->DL >> 8);
1170 *(buf++) = (unsigned char) (epc->DL >> 0);
1173 *(buf++) = (unsigned char) (epc->Pepc >> 0);
1176 /*memcpy(buf, epc->data, (size_t) epc->Lepc - 9);*/
1177 memset(buf, 0, (size_t) epc->Lepc - 9);
1179 /* update markers struct */
1180 j2k_add_marker(j2k->cstr_info, J2K_MS_EPC, -1, epc->Lepc + 2);
1184 int jpwl_esds_add(opj_j2k_t *j2k, jpwl_marker_t *jwmarker, int *jwmarker_num,
1185 int comps, unsigned char addrm, unsigned char ad_size,
1186 unsigned char senst, unsigned char se_size,
1187 double place_pos, int tileno) {
1192 jpwl_esd_ms_t *jpwl_esd_create(opj_j2k_t *j2k, int comp, unsigned char addrm, unsigned char ad_size,
1193 unsigned char senst, unsigned char se_size, int tileno,
1194 unsigned long int svalnum, void *sensval) {
1196 jpwl_esd_ms_t *esd = NULL;
1199 if (!(esd = (jpwl_esd_ms_t *) malloc((size_t) 1 * sizeof (jpwl_esd_ms_t)))) {
1200 opj_event_msg(j2k->cinfo, EVT_ERROR, "Could not allocate room for ESD MS\n");
1204 /* if relative sensitivity, activate byte range mode */
1208 /* size of sensval's ... */
1209 if ((ad_size != 0) && (ad_size != 2) && (ad_size != 4)) {
1210 opj_event_msg(j2k->cinfo, EVT_ERROR, "Address size %d for ESD MS is forbidden\n", ad_size);
1213 if ((se_size != 1) && (se_size != 2)) {
1214 opj_event_msg(j2k->cinfo, EVT_ERROR, "Sensitivity size %d for ESD MS is forbidden\n", se_size);
1218 /* ... depends on the addressing mode */
1223 ad_size = 0; /* as per the standard */
1224 esd->sensval_size = se_size;
1229 /* auto sense address size */
1231 /* if there are more than 66% of (2^16 - 1) bytes, switch to 4 bytes
1232 (we keep space for possible EPBs being inserted) */
1233 ad_size = (j2k->cstr_info->codestream_size > (1 * 65535 / 3)) ? 4 : 2;
1234 esd->sensval_size = ad_size + ad_size + se_size;
1239 /* auto sense address size */
1241 /* if there are more than 2^16 - 1 packets, switch to 4 bytes */
1242 ad_size = (j2k->cstr_info->packno > 65535) ? 4 : 2;
1243 esd->sensval_size = ad_size + ad_size + se_size;
1247 opj_event_msg(j2k->cinfo, EVT_ERROR, "Address mode %d for ESD MS is unimplemented\n", addrm);
1251 opj_event_msg(j2k->cinfo, EVT_ERROR, "Address mode %d for ESD MS is forbidden\n", addrm);
1255 /* set or unset sensitivity values */
1260 /* just based on the portions of a codestream */
1262 /* MH + no. of THs + no. of packets */
1263 svalnum = 1 + (j2k->cstr_info->tw * j2k->cstr_info->th) * (1 + j2k->cstr_info->packno);
1266 /* all the ones that are based on the packets */
1269 /* MH: all the packets and all the tiles info is written */
1270 svalnum = j2k->cstr_info->tw * j2k->cstr_info->th * j2k->cstr_info->packno;
1272 /* TPH: only that tile info is written */
1273 svalnum = j2k->cstr_info->packno;
1279 /* fill private fields */
1281 esd->ad_size = ad_size;
1282 esd->se_size = se_size;
1284 esd->svalnum = svalnum;
1285 esd->numcomps = j2k->image->numcomps;
1286 esd->tileno = tileno;
1288 /* Set the ESD parameters */
1289 /* length, excluding data field */
1290 if (esd->numcomps < 257)
1291 esd->Lesd = 4 + (unsigned short int) (esd->svalnum * esd->sensval_size);
1293 esd->Lesd = 5 + (unsigned short int) (esd->svalnum * esd->sensval_size);
1295 /* component data field */
1299 /* we are averaging */
1304 esd->Pesd |= (esd->addrm & 0x03) << 6; /* addressing mode */
1305 esd->Pesd |= (esd->senst & 0x07) << 3; /* sensitivity type */
1306 esd->Pesd |= ((esd->se_size >> 1) & 0x01) << 2; /* sensitivity size */
1307 esd->Pesd |= ((esd->ad_size >> 2) & 0x01) << 1; /* addressing size */
1308 esd->Pesd |= (comp < 0) ? 0x01 : 0x00; /* averaging components */
1310 /* if pointer to sensval is NULL, we can fill data field by ourselves */
1313 /* old code moved to jpwl_esd_fill() */
1317 /* we set the data field as the sensitivity values poinnter passed to the function */
1318 esd->data = (unsigned char *) sensval;
1324 bool jpwl_esd_fill(opj_j2k_t *j2k, jpwl_esd_ms_t *esd, unsigned char *buf) {
1327 unsigned long int vv;
1328 unsigned long int addr1, addr2;
1329 double dvalue, Omax2, tmp, TSE, MSE, oldMSE, PSNR, oldPSNR;
1330 unsigned short int pfpvalue;
1331 unsigned long int addrmask = 0x00000000;
1332 bool doneMH = false, doneTPH = false;
1334 /* sensitivity values in image info are as follows:
1335 - for each tile, distotile is the starting distortion for that tile, sum of all components
1336 - for each packet in a tile, disto is the distortion reduction caused by that packet to that tile
1337 - the TSE for a single tile should be given by distotile - sum(disto) , for all components
1338 - the MSE for a single tile is given by TSE / nbpix , for all components
1339 - the PSNR for a single tile is given by 10*log10( Omax^2 / MSE) , for all components
1340 (Omax is given by 2^bpp - 1 for unsigned images and by 2^(bpp - 1) - 1 for signed images
1343 /* browse all components and find Omax */
1345 for (i = 0; i < j2k->image->numcomps; i++) {
1346 tmp = pow(2.0, (double) (j2k->image->comps[i].sgnd ?
1347 (j2k->image->comps[i].bpp - 1) : (j2k->image->comps[i].bpp))) - 1;
1351 Omax2 = Omax2 * Omax2;
1353 /* if pointer of esd->data is not null, simply write down all the values byte by byte */
1355 for (i = 0; i < (int) esd->svalnum; i++)
1356 *(buf++) = esd->data[i];
1360 /* addressing mask */
1361 if (esd->ad_size == 2)
1362 addrmask = 0x0000FFFF; /* two bytes */
1364 addrmask = 0xFFFFFFFF; /* four bytes */
1366 /* set on precise point where sensitivity starts */
1367 if (esd->numcomps < 257)
1372 /* let's fill the data fields */
1373 for (vv = (esd->tileno < 0) ? 0 : (j2k->cstr_info->packno * esd->tileno); vv < esd->svalnum; vv++) {
1375 int thistile = vv / j2k->cstr_info->packno, thispacket = vv % j2k->cstr_info->packno;
1377 /* skip for the hack some lines below */
1378 if (thistile == j2k->cstr_info->tw * j2k->cstr_info->th)
1381 /* starting tile distortion */
1382 if (thispacket == 0) {
1383 TSE = j2k->cstr_info->tile[thistile].distotile;
1384 oldMSE = TSE / j2k->cstr_info->tile[thistile].numpix;
1385 oldPSNR = 10.0 * log10(Omax2 / oldMSE);
1389 TSE -= j2k->cstr_info->tile[thistile].packet[thispacket].disto;
1392 MSE = TSE / j2k->cstr_info->tile[thistile].numpix;
1395 PSNR = 10.0 * log10(Omax2 / MSE);
1397 /* fill the address range */
1398 switch (esd->addrm) {
1402 /* nothing, there is none */
1407 /* start address of packet */
1408 addr1 = (j2k->cstr_info->tile[thistile].packet[thispacket].start_pos) & addrmask;
1409 /* end address of packet */
1410 addr2 = (j2k->cstr_info->tile[thistile].packet[thispacket].end_pos) & addrmask;
1415 /* not implemented here */
1416 opj_event_msg(j2k->cinfo, EVT_WARNING, "Addressing mode packet_range is not implemented\n");
1419 /* unknown addressing method */
1421 /* not implemented here */
1422 opj_event_msg(j2k->cinfo, EVT_WARNING, "Unknown addressing mode\n");
1427 /* hack for writing relative sensitivity of MH and TPHs */
1428 if ((esd->senst == 0) && (thispacket == 0)) {
1431 if ((thistile == 0) && !doneMH) {
1432 /* we have to manage MH addresses */
1433 addr1 = 0; /* start of MH */
1434 addr2 = j2k->cstr_info->main_head_end; /* end of MH */
1435 /* set special dvalue for this MH */
1437 doneMH = true; /* don't come here anymore */
1438 vv--; /* wrap back loop counter */
1440 } else if (!doneTPH) {
1441 /* we have to manage TPH addresses */
1442 addr1 = j2k->cstr_info->tile[thistile].start_pos;
1443 addr2 = j2k->cstr_info->tile[thistile].end_header;
1444 /* set special dvalue for this TPH */
1446 doneTPH = true; /* don't come here till the next tile */
1447 vv--; /* wrap back loop counter */
1451 doneTPH = false; /* reset TPH counter */
1453 /* write the addresses to the buffer */
1454 switch (esd->ad_size) {
1462 *(buf++) = (unsigned char) (addr1 >> 8);
1463 *(buf++) = (unsigned char) (addr1 >> 0);
1464 *(buf++) = (unsigned char) (addr2 >> 8);
1465 *(buf++) = (unsigned char) (addr2 >> 0);
1470 *(buf++) = (unsigned char) (addr1 >> 24);
1471 *(buf++) = (unsigned char) (addr1 >> 16);
1472 *(buf++) = (unsigned char) (addr1 >> 8);
1473 *(buf++) = (unsigned char) (addr1 >> 0);
1474 *(buf++) = (unsigned char) (addr2 >> 24);
1475 *(buf++) = (unsigned char) (addr2 >> 16);
1476 *(buf++) = (unsigned char) (addr2 >> 8);
1477 *(buf++) = (unsigned char) (addr2 >> 0);
1486 /* let's fill the value field */
1487 switch (esd->senst) {
1489 /* relative sensitivity */
1491 /* we just write down the packet ordering */
1494 dvalue = MAX_V1 + 1000.0; /* this will cause pfpvalue set to 0xFFFF */
1495 else if (dvalue == -1)
1497 dvalue = MAX_V1 + 1000.0; /* this will cause pfpvalue set to 0xFFFF */
1499 /* packet: first is most important, and then in decreasing order
1500 down to the last, which counts for 1 */
1501 dvalue = jpwl_pfp_to_double((unsigned short) (j2k->cstr_info->packno - thispacket), esd->se_size);
1506 /* !!! WRONG: let's put here disto field of packets !!! */
1512 dvalue = oldMSE - MSE;
1523 dvalue = PSNR - oldPSNR;
1530 opj_event_msg(j2k->cinfo, EVT_WARNING, "MAXERR sensitivity mode is not implemented\n");
1541 opj_event_msg(j2k->cinfo, EVT_WARNING, "Reserved sensitivity mode is not implemented\n");
1549 /* compute the pseudo-floating point value */
1550 pfpvalue = jpwl_double_to_pfp(dvalue, esd->se_size);
1552 /* write the pfp value to the buffer */
1553 switch (esd->se_size) {
1557 *(buf++) = (unsigned char) (pfpvalue >> 0);
1562 *(buf++) = (unsigned char) (pfpvalue >> 8);
1563 *(buf++) = (unsigned char) (pfpvalue >> 0);
1572 void jpwl_esd_write(opj_j2k_t *j2k, jpwl_esd_ms_t *esd, unsigned char *buf) {
1575 *(buf++) = (unsigned char) (J2K_MS_ESD >> 8);
1576 *(buf++) = (unsigned char) (J2K_MS_ESD >> 0);
1579 *(buf++) = (unsigned char) (esd->Lesd >> 8);
1580 *(buf++) = (unsigned char) (esd->Lesd >> 0);
1583 if (esd->numcomps >= 257)
1584 *(buf++) = (unsigned char) (esd->Cesd >> 8);
1585 *(buf++) = (unsigned char) (esd->Cesd >> 0);
1588 *(buf++) = (unsigned char) (esd->Pesd >> 0);
1591 if (esd->numcomps < 257)
1592 memset(buf, 0xAA, (size_t) esd->Lesd - 4);
1593 /*memcpy(buf, esd->data, (size_t) esd->Lesd - 4);*/
1595 memset(buf, 0xAA, (size_t) esd->Lesd - 5);
1596 /*memcpy(buf, esd->data, (size_t) esd->Lesd - 5);*/
1598 /* update markers struct */
1599 j2k_add_marker(j2k->cstr_info, J2K_MS_ESD, -1, esd->Lesd + 2);
1603 unsigned short int jpwl_double_to_pfp(double V, int bytes) {
1605 unsigned short int em, e, m;
1614 } else if (V > MAX_V1) {
1618 e = (unsigned short int) (floor(log(V) * 1.44269504088896) / 4.0);
1619 m = (unsigned short int) (0.5 + (V / (pow(2.0, (double) (4 * e)))));
1621 em = ((e & 0x000F) << 4) + (m & 0x000F);
1629 } else if (V > MAX_V2) {
1633 e = (unsigned short int) floor(log(V) * 1.44269504088896) + 15;
1634 m = (unsigned short int) (0.5 + 2048.0 * ((V / (pow(2.0, (double) e - 15.0))) - 1.0));
1636 em = ((e & 0x001F) << 11) + (m & 0x07FF);
1648 double jpwl_pfp_to_double(unsigned short int em, int bytes) {
1655 V = (double) (em & 0x0F) * pow(2.0, (double) (em & 0xF0));
1660 V = pow(2.0, (double) ((em & 0xF800) >> 11) - 15.0) * (1.0 + (double) (em & 0x07FF) / 2048.0);
1673 bool jpwl_update_info(opj_j2k_t *j2k, jpwl_marker_t *jwmarker, int jwmarker_num) {
1676 unsigned long int addlen;
1678 opj_codestream_info_t *info = j2k->cstr_info;
1679 int tileno, tpno, packno, numtiles = info->th * info->tw, numpacks = info->packno;
1681 if (!j2k || !jwmarker ) {
1682 opj_event_msg(j2k->cinfo, EVT_ERROR, "J2K handle or JPWL markers list badly allocated\n");
1686 /* main_head_end: how many markers are there before? */
1688 for (mm = 0; mm < jwmarker_num; mm++)
1689 if (jwmarker[mm].pos < (unsigned long int) info->main_head_end)
1690 addlen += jwmarker[mm].len + 2;
1691 info->main_head_end += addlen;
1693 /* codestream_size: always increment with all markers */
1695 for (mm = 0; mm < jwmarker_num; mm++)
1696 addlen += jwmarker[mm].len + 2;
1697 info->codestream_size += addlen;
1699 /* navigate through all the tiles */
1700 for (tileno = 0; tileno < numtiles; tileno++) {
1702 /* start_pos: increment with markers before SOT */
1704 for (mm = 0; mm < jwmarker_num; mm++)
1705 if (jwmarker[mm].pos < (unsigned long int) info->tile[tileno].start_pos)
1706 addlen += jwmarker[mm].len + 2;
1707 info->tile[tileno].start_pos += addlen;
1709 /* end_header: increment with markers before of it */
1711 for (mm = 0; mm < jwmarker_num; mm++)
1712 if (jwmarker[mm].pos < (unsigned long int) info->tile[tileno].end_header)
1713 addlen += jwmarker[mm].len + 2;
1714 info->tile[tileno].end_header += addlen;
1716 /* end_pos: increment with markers before the end of this tile */
1717 /* code is disabled, since according to JPWL no markers can be beyond TPH */
1719 for (mm = 0; mm < jwmarker_num; mm++)
1720 if (jwmarker[mm].pos < (unsigned long int) info->tile[tileno].end_pos)
1721 addlen += jwmarker[mm].len + 2;
1722 info->tile[tileno].end_pos += addlen;
1724 /* navigate through all the tile parts */
1725 for (tpno = 0; tpno < info->tile[tileno].num_tps; tpno++) {
1727 /* start_pos: increment with markers before SOT */
1729 for (mm = 0; mm < jwmarker_num; mm++)
1730 if (jwmarker[mm].pos < (unsigned long int) info->tile[tileno].tp[tpno].tp_start_pos)
1731 addlen += jwmarker[mm].len + 2;
1732 info->tile[tileno].tp[tpno].tp_start_pos += addlen;
1734 /* end_header: increment with markers before of it */
1736 for (mm = 0; mm < jwmarker_num; mm++)
1737 if (jwmarker[mm].pos < (unsigned long int) info->tile[tileno].tp[tpno].tp_end_header)
1738 addlen += jwmarker[mm].len + 2;
1739 info->tile[tileno].tp[tpno].tp_end_header += addlen;
1741 /* end_pos: increment with markers before the end of this tile part */
1743 for (mm = 0; mm < jwmarker_num; mm++)
1744 if (jwmarker[mm].pos < (unsigned long int) info->tile[tileno].tp[tpno].tp_end_pos)
1745 addlen += jwmarker[mm].len + 2;
1746 info->tile[tileno].tp[tpno].tp_end_pos += addlen;
1750 /* navigate through all the packets in this tile */
1751 for (packno = 0; packno < numpacks; packno++) {
1753 /* start_pos: increment with markers before the packet */
1754 /* disabled for the same reason as before */
1756 for (mm = 0; mm < jwmarker_num; mm++)
1757 if (jwmarker[mm].pos <= (unsigned long int) info->tile[tileno].packet[packno].start_pos)
1758 addlen += jwmarker[mm].len + 2;
1759 info->tile[tileno].packet[packno].start_pos += addlen;
1761 /* end_ph_pos: increment with markers before the packet */
1762 /* disabled for the same reason as before */
1764 for (mm = 0; mm < jwmarker_num; mm++)
1765 if (jwmarker[mm].pos < (unsigned long int) info->tile[tileno].packet[packno].end_ph_pos)
1766 addlen += jwmarker[mm].len + 2;*/
1767 info->tile[tileno].packet[packno].end_ph_pos += addlen;
1769 /* end_pos: increment if marker is before the end of packet */
1770 /* disabled for the same reason as before */
1772 for (mm = 0; mm < jwmarker_num; mm++)
1773 if (jwmarker[mm].pos < (unsigned long int) info->tile[tileno].packet[packno].end_pos)
1774 addlen += jwmarker[mm].len + 2;*/
1775 info->tile[tileno].packet[packno].end_pos += addlen;
1780 /* reorder the markers list */
1785 #endif /* USE_JPWL */