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1/*
2 * Copyright (c) 2002-2007, Communications and Remote Sensing Laboratory, Universite catholique de Louvain (UCL), Belgium
3 * Copyright (c) 2002-2007, Professor Benoit Macq
4 * Copyright (c) 2001-2003, David Janssens
5 * Copyright (c) 2002-2003, Yannick Verschueren
6 * Copyright (c) 2003-2007, Francois-Olivier Devaux and Antonin Descampe
7 * Copyright (c) 2005, Herve Drolon, FreeImage Team
8 * Copyright (c) 2007, Callum Lerwick <seg@haxxed.com>
9 * All rights reserved.
10 *
11 * Redistribution and use in source and binary forms, with or without
12 * modification, are permitted provided that the following conditions
13 * are met:
14 * 1. Redistributions of source code must retain the above copyright
15 * notice, this list of conditions and the following disclaimer.
16 * 2. Redistributions in binary form must reproduce the above copyright
17 * notice, this list of conditions and the following disclaimer in the
18 * documentation and/or other materials provided with the distribution.
19 *
20 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS `AS IS'
21 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
22 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
23 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
24 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
25 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
26 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
27 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
28 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
29 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
30 * POSSIBILITY OF SUCH DAMAGE.
31 */
32
33#include "opj_includes.h"
34#include "t1_luts.h"
35
36/** @defgroup T1 T1 - Implementation of the tier-1 coding */
37/*@{*/
38
39/** @name Local static functions */
40/*@{*/
41
42static char t1_getctxno_zc(int f, int orient);
43static char t1_getctxno_sc(int f);
44static char t1_getctxno_mag(int f);
45static char t1_getspb(int f);
46static short t1_getnmsedec_sig(int x, int bitpos);
47static short t1_getnmsedec_ref(int x, int bitpos);
48static void t1_updateflags(flag_t *flagsp, int s, int stride);
49/**
50Encode significant pass
51*/
52static void t1_enc_sigpass_step(
53 opj_t1_t *t1,
54 flag_t *flagsp,
55 int *datap,
56 int orient,
57 int bpno,
58 int one,
59 int *nmsedec,
60 char type,
61 int vsc);
62/**
63Decode significant pass
64*/
65static void t1_dec_sigpass_step(
66 opj_t1_t *t1,
67 flag_t *flagsp,
68 int *datap,
69 int orient,
70 int oneplushalf,
71 char type,
72 int vsc);
73/**
74Encode significant pass
75*/
76static void t1_enc_sigpass(
77 opj_t1_t *t1,
78 int bpno,
79 int orient,
80 int *nmsedec,
81 char type,
82 int cblksty);
83/**
84Decode significant pass
85*/
86static void t1_dec_sigpass(
87 opj_t1_t *t1,
88 int bpno,
89 int orient,
90 char type,
91 int cblksty);
92/**
93Encode refinement pass
94*/
95static void t1_enc_refpass_step(
96 opj_t1_t *t1,
97 flag_t *flagsp,
98 int *datap,
99 int bpno,
100 int one,
101 int *nmsedec,
102 char type,
103 int vsc);
104/**
105Decode refinement pass
106*/
107static void t1_dec_refpass_step(
108 opj_t1_t *t1,
109 flag_t *flagsp,
110 int *datap,
111 int poshalf,
112 int neghalf,
113 char type,
114 int vsc);
115/**
116Encode refinement pass
117*/
118static void t1_enc_refpass(
119 opj_t1_t *t1,
120 int bpno,
121 int *nmsedec,
122 char type,
123 int cblksty);
124/**
125Decode refinement pass
126*/
127static void t1_dec_refpass(
128 opj_t1_t *t1,
129 int bpno,
130 char type,
131 int cblksty);
132/**
133Encode clean-up pass
134*/
135static void t1_enc_clnpass_step(
136 opj_t1_t *t1,
137 flag_t *flagsp,
138 int *datap,
139 int orient,
140 int bpno,
141 int one,
142 int *nmsedec,
143 int partial,
144 int vsc);
145/**
146Decode clean-up pass
147*/
148static void t1_dec_clnpass_step(
149 opj_t1_t *t1,
150 flag_t *flagsp,
151 int *datap,
152 int orient,
153 int oneplushalf,
154 int partial,
155 int vsc);
156/**
157Encode clean-up pass
158*/
159static void t1_enc_clnpass(
160 opj_t1_t *t1,
161 int bpno,
162 int orient,
163 int *nmsedec,
164 int cblksty);
165/**
166Decode clean-up pass
167*/
168static void t1_dec_clnpass(
169 opj_t1_t *t1,
170 int bpno,
171 int orient,
172 int cblksty);
173static double t1_getwmsedec(
174 int nmsedec,
175 int compno,
176 int level,
177 int orient,
178 int bpno,
179 int qmfbid,
180 double stepsize,
181 int numcomps);
182/**
183Encode 1 code-block
184@param t1 T1 handle
185@param cblk Code-block coding parameters
186@param orient
187@param compno Component number
188@param level
189@param qmfbid
190@param stepsize
191@param cblksty Code-block style
192@param numcomps
193@param tile
194*/
195static void t1_encode_cblk(
196 opj_t1_t *t1,
197 opj_tcd_cblk_t * cblk,
198 int orient,
199 int compno,
200 int level,
201 int qmfbid,
202 double stepsize,
203 int cblksty,
204 int numcomps,
205 opj_tcd_tile_t * tile);
206/**
207Decode 1 code-block
208@param t1 T1 handle
209@param cblk Code-block coding parameters
210@param orient
211@param roishift Region of interest shifting value
212@param cblksty Code-block style
213*/
214static void t1_decode_cblk(
215 opj_t1_t *t1,
216 opj_tcd_cblk_t * cblk,
217 int orient,
218 int roishift,
219 int cblksty);
220
221/*@}*/
222
223/*@}*/
224
225/* ----------------------------------------------------------------------- */
226
227static char t1_getctxno_zc(int f, int orient) {
228 return lut_ctxno_zc[(orient << 8) | (f & T1_SIG_OTH)];
229}
230
231static char t1_getctxno_sc(int f) {
232 return lut_ctxno_sc[(f & (T1_SIG_PRIM | T1_SGN)) >> 4];
233}
234
235static char t1_getctxno_mag(int f) {
236 return lut_ctxno_mag[(f & T1_SIG_OTH) | (((f & T1_REFINE) != 0) << 11)];
237}
238
239static char t1_getspb(int f) {
240 return lut_spb[(f & (T1_SIG_PRIM | T1_SGN)) >> 4];
241}
242
243static short t1_getnmsedec_sig(int x, int bitpos) {
244 if (bitpos > T1_NMSEDEC_FRACBITS) {
245 return lut_nmsedec_sig[(x >> (bitpos - T1_NMSEDEC_FRACBITS)) & ((1 << T1_NMSEDEC_BITS) - 1)];
246 }
247
248 return lut_nmsedec_sig0[x & ((1 << T1_NMSEDEC_BITS) - 1)];
249}
250
251static short t1_getnmsedec_ref(int x, int bitpos) {
252 if (bitpos > T1_NMSEDEC_FRACBITS) {
253 return lut_nmsedec_ref[(x >> (bitpos - T1_NMSEDEC_FRACBITS)) & ((1 << T1_NMSEDEC_BITS) - 1)];
254 }
255
256 return lut_nmsedec_ref0[x & ((1 << T1_NMSEDEC_BITS) - 1)];
257}
258
259static void t1_updateflags(flag_t *flagsp, int s, int stride) {
260 flag_t *np = flagsp - stride;
261 flag_t *sp = flagsp + stride;
262
263 static const flag_t mod[] = {
264 T1_SIG_S, T1_SIG_N, T1_SIG_E, T1_SIG_W,
265 T1_SIG_S | T1_SGN_S, T1_SIG_N | T1_SGN_N, T1_SIG_E | T1_SGN_E, T1_SIG_W | T1_SGN_W
266 };
267
268 s <<= 2;
269
270 np[-1] |= T1_SIG_SE;
271 np[0] |= mod[s];
272 np[1] |= T1_SIG_SW;
273
274 flagsp[-1] |= mod[s+2];
275 flagsp[1] |= mod[s+3];
276
277 sp[-1] |= T1_SIG_NE;
278 sp[0] |= mod[s+1];
279 sp[1] |= T1_SIG_NW;
280}
281
282static void t1_enc_sigpass_step(
283 opj_t1_t *t1,
284 flag_t *flagsp,
285 int *datap,
286 int orient,
287 int bpno,
288 int one,
289 int *nmsedec,
290 char type,
291 int vsc)
292{
293 int v, flag;
294
295 opj_mqc_t *mqc = t1->mqc; /* MQC component */
296
297 flag = vsc ? ((*flagsp) & (~(T1_SIG_S | T1_SIG_SE | T1_SIG_SW | T1_SGN_S))) : (*flagsp);
298 if ((flag & T1_SIG_OTH) && !(flag & (T1_SIG | T1_VISIT))) {
299 v = int_abs(*datap) & one ? 1 : 0;
300 if (type == T1_TYPE_RAW) { /* BYPASS/LAZY MODE */
301 mqc_setcurctx(mqc, t1_getctxno_zc(flag, orient)); /* ESSAI */
302 mqc_bypass_enc(mqc, v);
303 } else {
304 mqc_setcurctx(mqc, t1_getctxno_zc(flag, orient));
305 mqc_encode(mqc, v);
306 }
307 if (v) {
308 v = *datap < 0 ? 1 : 0;
309 *nmsedec += t1_getnmsedec_sig(int_abs(*datap), bpno + T1_NMSEDEC_FRACBITS);
310 if (type == T1_TYPE_RAW) { /* BYPASS/LAZY MODE */
311 mqc_setcurctx(mqc, t1_getctxno_sc(flag)); /* ESSAI */
312 mqc_bypass_enc(mqc, v);
313 } else {
314 mqc_setcurctx(mqc, t1_getctxno_sc(flag));
315 mqc_encode(mqc, v ^ t1_getspb(flag));
316 }
317 t1_updateflags(flagsp, v, t1->flags_stride);
318 *flagsp |= T1_SIG;
319 }
320 *flagsp |= T1_VISIT;
321 }
322}
323
324static void t1_dec_sigpass_step(
325 opj_t1_t *t1,
326 flag_t *flagsp,
327 int *datap,
328 int orient,
329 int oneplushalf,
330 char type,
331 int vsc)
332{
333 int v, flag;
334
335 opj_raw_t *raw = t1->raw; /* RAW component */
336 opj_mqc_t *mqc = t1->mqc; /* MQC component */
337
338 flag = vsc ? ((*flagsp) & (~(T1_SIG_S | T1_SIG_SE | T1_SIG_SW | T1_SGN_S))) : (*flagsp);
339 if ((flag & T1_SIG_OTH) && !(flag & (T1_SIG | T1_VISIT))) {
340 if (type == T1_TYPE_RAW) {
341 if (raw_decode(raw)) {
342 v = raw_decode(raw); /* ESSAI */
343 *datap = v ? -oneplushalf : oneplushalf;
344 t1_updateflags(flagsp, v, t1->flags_stride);
345 *flagsp |= T1_SIG;
346 }
347 } else {
348 mqc_setcurctx(mqc, t1_getctxno_zc(flag, orient));
349 if (mqc_decode(mqc)) {
350 mqc_setcurctx(mqc, t1_getctxno_sc(flag));
351 v = mqc_decode(mqc) ^ t1_getspb(flag);
352 *datap = v ? -oneplushalf : oneplushalf;
353 t1_updateflags(flagsp, v, t1->flags_stride);
354 *flagsp |= T1_SIG;
355 }
356 }
357 *flagsp |= T1_VISIT;
358 }
359} /* VSC and BYPASS by Antonin */
360
361static void t1_enc_sigpass(
362 opj_t1_t *t1,
363 int bpno,
364 int orient,
365 int *nmsedec,
366 char type,
367 int cblksty)
368{
369 int i, j, k, one, vsc;
370 *nmsedec = 0;
371 one = 1 << (bpno + T1_NMSEDEC_FRACBITS);
372 for (k = 0; k < t1->h; k += 4) {
373 for (i = 0; i < t1->w; ++i) {
374 for (j = k; j < k + 4 && j < t1->h; ++j) {
375 vsc = ((cblksty & J2K_CCP_CBLKSTY_VSC) && (j == k + 3 || j == t1->h - 1)) ? 1 : 0;
376 t1_enc_sigpass_step(
377 t1,
378 &t1->flags[((j+1) * t1->flags_stride) + i + 1],
379 &t1->data[(j * t1->w) + i],
380 orient,
381 bpno,
382 one,
383 nmsedec,
384 type,
385 vsc);
386 }
387 }
388 }
389}
390
391static void t1_dec_sigpass(
392 opj_t1_t *t1,
393 int bpno,
394 int orient,
395 char type,
396 int cblksty)
397{
398 int i, j, k, one, half, oneplushalf, vsc;
399 one = 1 << bpno;
400 half = one >> 1;
401 oneplushalf = one | half;
402 for (k = 0; k < t1->h; k += 4) {
403 for (i = 0; i < t1->w; ++i) {
404 for (j = k; j < k + 4 && j < t1->h; ++j) {
405 vsc = ((cblksty & J2K_CCP_CBLKSTY_VSC) && (j == k + 3 || j == t1->h - 1)) ? 1 : 0;
406 t1_dec_sigpass_step(
407 t1,
408 &t1->flags[((j+1) * t1->flags_stride) + i + 1],
409 &t1->data[(j * t1->w) + i],
410 orient,
411 oneplushalf,
412 type,
413 vsc);
414 }
415 }
416 }
417} /* VSC and BYPASS by Antonin */
418
419static void t1_enc_refpass_step(
420 opj_t1_t *t1,
421 flag_t *flagsp,
422 int *datap,
423 int bpno,
424 int one,
425 int *nmsedec,
426 char type,
427 int vsc)
428{
429 int v, flag;
430
431 opj_mqc_t *mqc = t1->mqc; /* MQC component */
432
433 flag = vsc ? ((*flagsp) & (~(T1_SIG_S | T1_SIG_SE | T1_SIG_SW | T1_SGN_S))) : (*flagsp);
434 if ((flag & (T1_SIG | T1_VISIT)) == T1_SIG) {
435 *nmsedec += t1_getnmsedec_ref(int_abs(*datap), bpno + T1_NMSEDEC_FRACBITS);
436 v = int_abs(*datap) & one ? 1 : 0;
437 if (type == T1_TYPE_RAW) { /* BYPASS/LAZY MODE */
438 mqc_setcurctx(mqc, t1_getctxno_mag(flag)); /* ESSAI */
439 mqc_bypass_enc(mqc, v);
440 } else {
441 mqc_setcurctx(mqc, t1_getctxno_mag(flag));
442 mqc_encode(mqc, v);
443 }
444 *flagsp |= T1_REFINE;
445 }
446}
447
448static void t1_dec_refpass_step(
449 opj_t1_t *t1,
450 flag_t *flagsp,
451 int *datap,
452 int poshalf,
453 int neghalf,
454 char type,
455 int vsc)
456{
457 int v, t, flag;
458
459 opj_mqc_t *mqc = t1->mqc; /* MQC component */
460 opj_raw_t *raw = t1->raw; /* RAW component */
461
462 flag = vsc ? ((*flagsp) & (~(T1_SIG_S | T1_SIG_SE | T1_SIG_SW | T1_SGN_S))) : (*flagsp);
463 if ((flag & (T1_SIG | T1_VISIT)) == T1_SIG) {
464 if (type == T1_TYPE_RAW) {
465 mqc_setcurctx(mqc, t1_getctxno_mag(flag)); /* ESSAI */
466 v = raw_decode(raw);
467 } else {
468 mqc_setcurctx(mqc, t1_getctxno_mag(flag));
469 v = mqc_decode(mqc);
470 }
471 t = v ? poshalf : neghalf;
472 *datap += *datap < 0 ? -t : t;
473 *flagsp |= T1_REFINE;
474 }
475} /* VSC and BYPASS by Antonin */
476
477static void t1_enc_refpass(
478 opj_t1_t *t1,
479 int bpno,
480 int *nmsedec,
481 char type,
482 int cblksty)
483{
484 int i, j, k, one, vsc;
485 *nmsedec = 0;
486 one = 1 << (bpno + T1_NMSEDEC_FRACBITS);
487 for (k = 0; k < t1->h; k += 4) {
488 for (i = 0; i < t1->w; ++i) {
489 for (j = k; j < k + 4 && j < t1->h; ++j) {
490 vsc = ((cblksty & J2K_CCP_CBLKSTY_VSC) && (j == k + 3 || j == t1->h - 1)) ? 1 : 0;
491 t1_enc_refpass_step(
492 t1,
493 &t1->flags[((j+1) * t1->flags_stride) + i + 1],
494 &t1->data[(j * t1->w) + i],
495 bpno,
496 one,
497 nmsedec,
498 type,
499 vsc);
500 }
501 }
502 }
503}
504
505static void t1_dec_refpass(
506 opj_t1_t *t1,
507 int bpno,
508 char type,
509 int cblksty)
510{
511 int i, j, k, one, poshalf, neghalf;
512 int vsc;
513 one = 1 << bpno;
514 poshalf = one >> 1;
515 neghalf = bpno > 0 ? -poshalf : -1;
516 for (k = 0; k < t1->h; k += 4) {
517 for (i = 0; i < t1->w; ++i) {
518 for (j = k; j < k + 4 && j < t1->h; ++j) {
519 vsc = ((cblksty & J2K_CCP_CBLKSTY_VSC) && (j == k + 3 || j == t1->h - 1)) ? 1 : 0;
520 t1_dec_refpass_step(
521 t1,
522 &t1->flags[((j+1) * t1->flags_stride) + i + 1],
523 &t1->data[(j * t1->w) + i],
524 poshalf,
525 neghalf,
526 type,
527 vsc);
528 }
529 }
530 }
531} /* VSC and BYPASS by Antonin */
532
533static void t1_enc_clnpass_step(
534 opj_t1_t *t1,
535 flag_t *flagsp,
536 int *datap,
537 int orient,
538 int bpno,
539 int one,
540 int *nmsedec,
541 int partial,
542 int vsc)
543{
544 int v, flag;
545
546 opj_mqc_t *mqc = t1->mqc; /* MQC component */
547
548 flag = vsc ? ((*flagsp) & (~(T1_SIG_S | T1_SIG_SE | T1_SIG_SW | T1_SGN_S))) : (*flagsp);
549 if (partial) {
550 goto LABEL_PARTIAL;
551 }
552 if (!(*flagsp & (T1_SIG | T1_VISIT))) {
553 mqc_setcurctx(mqc, t1_getctxno_zc(flag, orient));
554 v = int_abs(*datap) & one ? 1 : 0;
555 mqc_encode(mqc, v);
556 if (v) {
557LABEL_PARTIAL:
558 *nmsedec += t1_getnmsedec_sig(int_abs(*datap), bpno + T1_NMSEDEC_FRACBITS);
559 mqc_setcurctx(mqc, t1_getctxno_sc(flag));
560 v = *datap < 0 ? 1 : 0;
561 mqc_encode(mqc, v ^ t1_getspb(flag));
562 t1_updateflags(flagsp, v, t1->flags_stride);
563 *flagsp |= T1_SIG;
564 }
565 }
566 *flagsp &= ~T1_VISIT;
567}
568
569static void t1_dec_clnpass_step(
570 opj_t1_t *t1,
571 flag_t *flagsp,
572 int *datap,
573 int orient,
574 int oneplushalf,
575 int partial,
576 int vsc)
577{
578 int v, flag;
579
580 opj_mqc_t *mqc = t1->mqc; /* MQC component */
581
582 flag = vsc ? ((*flagsp) & (~(T1_SIG_S | T1_SIG_SE | T1_SIG_SW | T1_SGN_S))) : (*flagsp);
583 if (partial) {
584 goto LABEL_PARTIAL;
585 }
586 if (!(flag & (T1_SIG | T1_VISIT))) {
587 mqc_setcurctx(mqc, t1_getctxno_zc(flag, orient));
588 if (mqc_decode(mqc)) {
589LABEL_PARTIAL:
590 mqc_setcurctx(mqc, t1_getctxno_sc(flag));
591 v = mqc_decode(mqc) ^ t1_getspb(flag);
592 *datap = v ? -oneplushalf : oneplushalf;
593 t1_updateflags(flagsp, v, t1->flags_stride);
594 *flagsp |= T1_SIG;
595 }
596 }
597 *flagsp &= ~T1_VISIT;
598} /* VSC and BYPASS by Antonin */
599
600static void t1_enc_clnpass(
601 opj_t1_t *t1,
602 int bpno,
603 int orient,
604 int *nmsedec,
605 int cblksty)
606{
607 int i, j, k, one, agg, runlen, vsc;
608
609 opj_mqc_t *mqc = t1->mqc; /* MQC component */
610
611 *nmsedec = 0;
612 one = 1 << (bpno + T1_NMSEDEC_FRACBITS);
613 for (k = 0; k < t1->h; k += 4) {
614 for (i = 0; i < t1->w; ++i) {
615 if (k + 3 < t1->h) {
616 if (cblksty & J2K_CCP_CBLKSTY_VSC) {
617 agg = !(MACRO_t1_flags(1 + k,1 + i) & (T1_SIG | T1_VISIT | T1_SIG_OTH)
618 || MACRO_t1_flags(1 + k + 1,1 + i) & (T1_SIG | T1_VISIT | T1_SIG_OTH)
619 || MACRO_t1_flags(1 + k + 2,1 + i) & (T1_SIG | T1_VISIT | T1_SIG_OTH)
620 || (MACRO_t1_flags(1 + k + 3,1 + i)
621 & (~(T1_SIG_S | T1_SIG_SE | T1_SIG_SW | T1_SGN_S))) & (T1_SIG | T1_VISIT | T1_SIG_OTH));
622 } else {
623 agg = !(MACRO_t1_flags(1 + k,1 + i) & (T1_SIG | T1_VISIT | T1_SIG_OTH)
624 || MACRO_t1_flags(1 + k + 1,1 + i) & (T1_SIG | T1_VISIT | T1_SIG_OTH)
625 || MACRO_t1_flags(1 + k + 2,1 + i) & (T1_SIG | T1_VISIT | T1_SIG_OTH)
626 || MACRO_t1_flags(1 + k + 3,1 + i) & (T1_SIG | T1_VISIT | T1_SIG_OTH));
627 }
628 } else {
629 agg = 0;
630 }
631 if (agg) {
632 for (runlen = 0; runlen < 4; ++runlen) {
633 if (int_abs(t1->data[((k + runlen)*t1->w) + i]) & one)
634 break;
635 }
636 mqc_setcurctx(mqc, T1_CTXNO_AGG);
637 mqc_encode(mqc, runlen != 4);
638 if (runlen == 4) {
639 continue;
640 }
641 mqc_setcurctx(mqc, T1_CTXNO_UNI);
642 mqc_encode(mqc, runlen >> 1);
643 mqc_encode(mqc, runlen & 1);
644 } else {
645 runlen = 0;
646 }
647 for (j = k + runlen; j < k + 4 && j < t1->h; ++j) {
648 vsc = ((cblksty & J2K_CCP_CBLKSTY_VSC) && (j == k + 3 || j == t1->h - 1)) ? 1 : 0;
649 t1_enc_clnpass_step(
650 t1,
651 &t1->flags[((j+1) * t1->flags_stride) + i + 1],
652 &t1->data[(j * t1->w) + i],
653 orient,
654 bpno,
655 one,
656 nmsedec,
657 agg && (j == k + runlen),
658 vsc);
659 }
660 }
661 }
662}
663
664static void t1_dec_clnpass(
665 opj_t1_t *t1,
666 int bpno,
667 int orient,
668 int cblksty)
669{
670 int i, j, k, one, half, oneplushalf, agg, runlen, vsc;
671 int segsym = cblksty & J2K_CCP_CBLKSTY_SEGSYM;
672
673 opj_mqc_t *mqc = t1->mqc; /* MQC component */
674
675 one = 1 << bpno;
676 half = one >> 1;
677 oneplushalf = one | half;
678 for (k = 0; k < t1->h; k += 4) {
679 for (i = 0; i < t1->w; ++i) {
680 if (k + 3 < t1->h) {
681 if (cblksty & J2K_CCP_CBLKSTY_VSC) {
682 agg = !(MACRO_t1_flags(1 + k,1 + i) & (T1_SIG | T1_VISIT | T1_SIG_OTH)
683 || MACRO_t1_flags(1 + k + 1,1 + i) & (T1_SIG | T1_VISIT | T1_SIG_OTH)
684 || MACRO_t1_flags(1 + k + 2,1 + i) & (T1_SIG | T1_VISIT | T1_SIG_OTH)
685 || (MACRO_t1_flags(1 + k + 3,1 + i)
686 & (~(T1_SIG_S | T1_SIG_SE | T1_SIG_SW | T1_SGN_S))) & (T1_SIG | T1_VISIT | T1_SIG_OTH));
687 } else {
688 agg = !(MACRO_t1_flags(1 + k,1 + i) & (T1_SIG | T1_VISIT | T1_SIG_OTH)
689 || MACRO_t1_flags(1 + k + 1,1 + i) & (T1_SIG | T1_VISIT | T1_SIG_OTH)
690 || MACRO_t1_flags(1 + k + 2,1 + i) & (T1_SIG | T1_VISIT | T1_SIG_OTH)
691 || MACRO_t1_flags(1 + k + 3,1 + i) & (T1_SIG | T1_VISIT | T1_SIG_OTH));
692 }
693 } else {
694 agg = 0;
695 }
696 if (agg) {
697 mqc_setcurctx(mqc, T1_CTXNO_AGG);
698 if (!mqc_decode(mqc)) {
699 continue;
700 }
701 mqc_setcurctx(mqc, T1_CTXNO_UNI);
702 runlen = mqc_decode(mqc);
703 runlen = (runlen << 1) | mqc_decode(mqc);
704 } else {
705 runlen = 0;
706 }
707 for (j = k + runlen; j < k + 4 && j < t1->h; ++j) {
708 vsc = ((cblksty & J2K_CCP_CBLKSTY_VSC) && (j == k + 3 || j == t1->h - 1)) ? 1 : 0;
709 t1_dec_clnpass_step(
710 t1,
711 &t1->flags[((j+1) * t1->flags_stride) + i + 1],
712 &t1->data[(j * t1->w) + i],
713 orient,
714 oneplushalf,
715 agg && (j == k + runlen),
716 vsc);
717 }
718 }
719 }
720 if (segsym) {
721 int v = 0;
722 mqc_setcurctx(mqc, T1_CTXNO_UNI);
723 v = mqc_decode(mqc);
724 v = (v << 1) | mqc_decode(mqc);
725 v = (v << 1) | mqc_decode(mqc);
726 v = (v << 1) | mqc_decode(mqc);
727 /*
728 if (v!=0xa) {
729 opj_event_msg(t1->cinfo, EVT_WARNING, "Bad segmentation symbol %x\n", v);
730 }
731 */
732 }
733} /* VSC and BYPASS by Antonin */
734
735
736/** mod fixed_quality */
737static double t1_getwmsedec(
738 int nmsedec,
739 int compno,
740 int level,
741 int orient,
742 int bpno,
743 int qmfbid,
744 double stepsize,
745 int numcomps)
746{
747 double w1, w2, wmsedec;
748 if (qmfbid == 1) {
749 w1 = (numcomps > 1) ? mct_getnorm(compno) : 1.0;
750 w2 = dwt_getnorm(level, orient);
751 } else { /* if (qmfbid == 0) */
752 w1 = (numcomps > 1) ? mct_getnorm_real(compno) : 1.0;
753 w2 = dwt_getnorm_real(level, orient);
754 }
755 wmsedec = w1 * w2 * stepsize * (1 << bpno);
756 wmsedec *= wmsedec * nmsedec / 8192.0;
757
758 return wmsedec;
759}
760
761static void allocate_buffers(
762 opj_t1_t *t1,
763 int w,
764 int h)
765{
766 int datasize;
767 int flagssize;
768
769 datasize=w * h;
770 //fprintf(stderr,"w=%i h=%i datasize=%i flagssize=%i\n",w,h,datasize,flagssize);
771
772 if(datasize > t1->datasize){
773 //fprintf(stderr,"Allocating t1->data: datasize=%i\n",datasize);
774 free(t1->data);
775 t1->data=malloc(datasize * sizeof(int));
776 if(!t1->data){
777 return;
778 }
779 t1->datasize=datasize;
780 }
781 //memset(t1->data,0xff,t1->datasize);
782 memset(t1->data,0,datasize * sizeof(int));
783
784 t1->flags_stride=w+2;
785 flagssize=t1->flags_stride * (h+2);
786
787 if(flagssize > t1->flagssize){
788 //fprintf(stderr,"Allocating t1->flags: flagssize=%i\n",flagssize);
789 free(t1->flags);
790 t1->flags=malloc(flagssize * sizeof(flag_t));
791 if(!t1->flags){
792 fprintf(stderr,"Allocating t1->flags FAILED!\n");
793 return;
794 }
795 t1->flagssize=flagssize;
796 }
797 //memset(t1->flags,0xff,t1->flagssize);
798 memset(t1->flags,0,flagssize * sizeof(flag_t));
799
800 t1->w=w;
801 t1->h=h;
802}
803
804/** mod fixed_quality */
805static void t1_encode_cblk(
806 opj_t1_t *t1,
807 opj_tcd_cblk_t * cblk,
808 int orient,
809 int compno,
810 int level,
811 int qmfbid,
812 double stepsize,
813 int cblksty,
814 int numcomps,
815 opj_tcd_tile_t * tile)
816{
817 int i, j;
818 int passno;
819 int bpno, passtype;
820 int max;
821 int nmsedec = 0;
822 double cumwmsedec = 0.0;
823 char type = T1_TYPE_MQ;
824
825 opj_mqc_t *mqc = t1->mqc; /* MQC component */
826
827 max = 0;
828 for (j = 0; j < t1->h; ++j) {
829 for (i = 0; i < t1->w; ++i) {
830 max = int_max(max, int_abs(t1->data[(j * t1->w) + i]));
831 }
832 }
833
834 cblk->numbps = max ? (int_floorlog2(max) + 1) - T1_NMSEDEC_FRACBITS : 0;
835
836 bpno = cblk->numbps - 1;
837 passtype = 2;
838
839 mqc_resetstates(mqc);
840 mqc_setstate(mqc, T1_CTXNO_UNI, 0, 46);
841 mqc_setstate(mqc, T1_CTXNO_AGG, 0, 3);
842 mqc_setstate(mqc, T1_CTXNO_ZC, 0, 4);
843 mqc_init_enc(mqc, cblk->data);
844
845 for (passno = 0; bpno >= 0; ++passno) {
846 opj_tcd_pass_t *pass = &cblk->passes[passno];
847 int correction = 3;
848 type = ((bpno < (cblk->numbps - 4)) && (passtype < 2) && (cblksty & J2K_CCP_CBLKSTY_LAZY)) ? T1_TYPE_RAW : T1_TYPE_MQ;
849
850 switch (passtype) {
851 case 0:
852 t1_enc_sigpass(t1, bpno, orient, &nmsedec, type, cblksty);
853 break;
854 case 1:
855 t1_enc_refpass(t1, bpno, &nmsedec, type, cblksty);
856 break;
857 case 2:
858 t1_enc_clnpass(t1, bpno, orient, &nmsedec, cblksty);
859 /* code switch SEGMARK (i.e. SEGSYM) */
860 if (cblksty & J2K_CCP_CBLKSTY_SEGSYM)
861 mqc_segmark_enc(mqc);
862 break;
863 }
864
865 /* fixed_quality */
866 cumwmsedec += t1_getwmsedec(nmsedec, compno, level, orient, bpno, qmfbid, stepsize, numcomps);
867 tile->distotile += t1_getwmsedec(nmsedec, compno, level, orient, bpno, qmfbid, stepsize, numcomps);
868
869 /* Code switch "RESTART" (i.e. TERMALL) */
870 if ((cblksty & J2K_CCP_CBLKSTY_TERMALL) && !((passtype == 2) && (bpno - 1 < 0))) {
871 if (type == T1_TYPE_RAW) {
872 mqc_flush(mqc);
873 correction = 1;
874 /* correction = mqc_bypass_flush_enc(); */
875 } else { /* correction = mqc_restart_enc(); */
876 mqc_flush(mqc);
877 correction = 1;
878 }
879 pass->term = 1;
880 } else {
881 if (((bpno < (cblk->numbps - 4) && (passtype > 0))
882 || ((bpno == (cblk->numbps - 4)) && (passtype == 2))) && (cblksty & J2K_CCP_CBLKSTY_LAZY)) {
883 if (type == T1_TYPE_RAW) {
884 mqc_flush(mqc);
885 correction = 1;
886 /* correction = mqc_bypass_flush_enc(); */
887 } else { /* correction = mqc_restart_enc(); */
888 mqc_flush(mqc);
889 correction = 1;
890 }
891 pass->term = 1;
892 } else {
893 pass->term = 0;
894 }
895 }
896
897 if (++passtype == 3) {
898 passtype = 0;
899 bpno--;
900 }
901
902 if (pass->term && bpno > 0) {
903 type = ((bpno < (cblk->numbps - 4)) && (passtype < 2) && (cblksty & J2K_CCP_CBLKSTY_LAZY)) ? T1_TYPE_RAW : T1_TYPE_MQ;
904 if (type == T1_TYPE_RAW)
905 mqc_bypass_init_enc(mqc);
906 else
907 mqc_restart_init_enc(mqc);
908 }
909
910 pass->distortiondec = cumwmsedec;
911 pass->rate = mqc_numbytes(mqc) + correction; /* FIXME */
912
913 /* Code-switch "RESET" */
914 if (cblksty & J2K_CCP_CBLKSTY_RESET)
915 mqc_reset_enc(mqc);
916 }
917
918 /* Code switch "ERTERM" (i.e. PTERM) */
919 if (cblksty & J2K_CCP_CBLKSTY_PTERM)
920 mqc_erterm_enc(mqc);
921 else /* Default coding */ if (!(cblksty & J2K_CCP_CBLKSTY_LAZY))
922 mqc_flush(mqc);
923
924 cblk->totalpasses = passno;
925
926 for (passno = 0; passno<cblk->totalpasses; passno++) {
927 opj_tcd_pass_t *pass = &cblk->passes[passno];
928 if (pass->rate > mqc_numbytes(mqc))
929 pass->rate = mqc_numbytes(mqc);
930 /*Preventing generation of FF as last data byte of a pass*/
931 if((pass->rate>1) && (cblk->data[pass->rate - 1] == 0xFF)){
932 pass->rate--;
933 }
934 pass->len = pass->rate - (passno == 0 ? 0 : cblk->passes[passno - 1].rate);
935 }
936}
937
938static void t1_decode_cblk(
939 opj_t1_t *t1,
940 opj_tcd_cblk_t * cblk,
941 int orient,
942 int roishift,
943 int cblksty)
944{
945 int bpno, passtype;
946 int segno, passno;
947 char type = T1_TYPE_MQ; /* BYPASS mode */
948
949 opj_raw_t *raw = t1->raw; /* RAW component */
950 opj_mqc_t *mqc = t1->mqc; /* MQC component */
951
952 allocate_buffers(
953 t1,
954 cblk->x1 - cblk->x0,
955 cblk->y1 - cblk->y0);
956
957 bpno = roishift + cblk->numbps - 1;
958 passtype = 2;
959
960 mqc_resetstates(mqc);
961 mqc_setstate(mqc, T1_CTXNO_UNI, 0, 46);
962 mqc_setstate(mqc, T1_CTXNO_AGG, 0, 3);
963 mqc_setstate(mqc, T1_CTXNO_ZC, 0, 4);
964
965 for (segno = 0; segno < cblk->numsegs; ++segno) {
966 opj_tcd_seg_t *seg = &cblk->segs[segno];
967
968 /* BYPASS mode */
969 type = ((bpno <= (cblk->numbps - 1) - 4) && (passtype < 2) && (cblksty & J2K_CCP_CBLKSTY_LAZY)) ? T1_TYPE_RAW : T1_TYPE_MQ;
970 if (type == T1_TYPE_RAW) {
971 raw_init_dec(raw, seg->data, seg->len);
972 } else {
973 mqc_init_dec(mqc, seg->data, seg->len);
974 }
975
976 for (passno = 0; passno < seg->numpasses; ++passno) {
977 switch (passtype) {
978 case 0:
979 t1_dec_sigpass(t1, bpno+1, orient, type, cblksty);
980 break;
981 case 1:
982 t1_dec_refpass(t1, bpno+1, type, cblksty);
983 break;
984 case 2:
985 t1_dec_clnpass(t1, bpno+1, orient, cblksty);
986 break;
987 }
988
989 if ((cblksty & J2K_CCP_CBLKSTY_RESET) && type == T1_TYPE_MQ) {
990 mqc_resetstates(mqc);
991 mqc_setstate(mqc, T1_CTXNO_UNI, 0, 46);
992 mqc_setstate(mqc, T1_CTXNO_AGG, 0, 3);
993 mqc_setstate(mqc, T1_CTXNO_ZC, 0, 4);
994 }
995 if (++passtype == 3) {
996 passtype = 0;
997 bpno--;
998 }
999 }
1000 }
1001}
1002
1003/* ----------------------------------------------------------------------- */
1004
1005opj_t1_t* t1_create(opj_common_ptr cinfo) {
1006 opj_t1_t *t1 = (opj_t1_t*) malloc(sizeof(opj_t1_t));
1007 if(!t1)
1008 return NULL;
1009
1010 t1->cinfo = cinfo;
1011 /* create MQC and RAW handles */
1012 t1->mqc = mqc_create();
1013 t1->raw = raw_create();
1014
1015 t1->datasize=0;
1016 t1->data=NULL;
1017 t1->flagssize=0;
1018 t1->flags=NULL;
1019
1020 return t1;
1021}
1022
1023void t1_destroy(opj_t1_t *t1) {
1024 if(t1) {
1025 /* destroy MQC and RAW handles */
1026 mqc_destroy(t1->mqc);
1027 raw_destroy(t1->raw);
1028 free(t1->data);
1029 free(t1->flags);
1030 free(t1);
1031 }
1032}
1033
1034void t1_encode_cblks(
1035 opj_t1_t *t1,
1036 opj_tcd_tile_t *tile,
1037 opj_tcp_t *tcp)
1038{
1039 int compno, resno, bandno, precno, cblkno;
1040
1041 tile->distotile = 0; /* fixed_quality */
1042
1043 for (compno = 0; compno < tile->numcomps; ++compno) {
1044 opj_tcd_tilecomp_t *tilec = &tile->comps[compno];
1045
1046 for (resno = 0; resno < tilec->numresolutions; ++resno) {
1047 opj_tcd_resolution_t *res = &tilec->resolutions[resno];
1048
1049 for (bandno = 0; bandno < res->numbands; ++bandno) {
1050 opj_tcd_band_t *band = &res->bands[bandno];
1051
1052 for (precno = 0; precno < res->pw * res->ph; ++precno) {
1053 opj_tcd_precinct_t *prc = &band->precincts[precno];
1054
1055 for (cblkno = 0; cblkno < prc->cw * prc->ch; ++cblkno) {
1056 int x, y, w, i, j, orient;
1057 opj_tcd_cblk_t *cblk = &prc->cblks[cblkno];
1058
1059 x = cblk->x0 - band->x0;
1060 y = cblk->y0 - band->y0;
1061 if (band->bandno & 1) {
1062 opj_tcd_resolution_t *pres = &tilec->resolutions[resno - 1];
1063 x += pres->x1 - pres->x0;
1064 }
1065 if (band->bandno & 2) {
1066 opj_tcd_resolution_t *pres = &tilec->resolutions[resno - 1];
1067 y += pres->y1 - pres->y0;
1068 }
1069
1070 allocate_buffers(
1071 t1,
1072 cblk->x1 - cblk->x0,
1073 cblk->y1 - cblk->y0);
1074
1075 w = tilec->x1 - tilec->x0;
1076 if (tcp->tccps[compno].qmfbid == 1) {
1077 for (j = 0; j < t1->h; ++j) {
1078 for (i = 0; i < t1->w; ++i) {
1079 t1->data[(j * t1->w) + i] =
1080 tilec->data[(x + i) + (y + j) * w] << T1_NMSEDEC_FRACBITS;
1081 }
1082 }
1083 } else { /* if (tcp->tccps[compno].qmfbid == 0) */
1084 for (j = 0; j < t1->h; ++j) {
1085 for (i = 0; i < t1->w; ++i) {
1086 t1->data[(j * t1->w) + i] =
1087 fix_mul(
1088 tilec->data[x + i + (y + j) * w],
1089 8192 * 8192 / ((int) floor(band->stepsize * 8192))) >> (11 - T1_NMSEDEC_FRACBITS);
1090 }
1091 }
1092 }
1093 orient = band->bandno; /* FIXME */
1094 if (orient == 2) {
1095 orient = 1;
1096 } else if (orient == 1) {
1097 orient = 2;
1098 }
1099
1100 t1_encode_cblk(
1101 t1,
1102 cblk,
1103 orient,
1104 compno,
1105 tilec->numresolutions - 1 - resno,
1106 tcp->tccps[compno].qmfbid,
1107 band->stepsize,
1108 tcp->tccps[compno].cblksty,
1109 tile->numcomps,
1110 tile);
1111
1112 } /* cblkno */
1113 } /* precno */
1114 } /* bandno */
1115 } /* resno */
1116 } /* compno */
1117}
1118
1119void t1_decode_cblks(
1120 opj_t1_t *t1,
1121 opj_tcd_tile_t *tile,
1122 opj_tcp_t *tcp)
1123{
1124 int compno, resno, bandno, precno, cblkno;
1125
1126 for (compno = 0; compno < tile->numcomps; ++compno) {
1127 opj_tcd_tilecomp_t *tilec = &tile->comps[compno];
1128
1129 for (resno = 0; resno < tilec->numresolutions; ++resno) {
1130 opj_tcd_resolution_t *res = &tilec->resolutions[resno];
1131
1132 for (bandno = 0; bandno < res->numbands; ++bandno) {
1133 opj_tcd_band_t *band = &res->bands[bandno];
1134
1135 for (precno = 0; precno < res->pw * res->ph; ++precno) {
1136 opj_tcd_precinct_t *prc = &band->precincts[precno];
1137
1138 for (cblkno = 0; cblkno < prc->cw * prc->ch; ++cblkno) {
1139 int x, y, w, i, j, orient, cblk_w, cblk_h;
1140 opj_tcd_cblk_t *cblk = &prc->cblks[cblkno];
1141
1142 orient = band->bandno; /* FIXME */
1143 if (orient == 2) {
1144 orient = 1;
1145 } else if (orient == 1) {
1146 orient = 2;
1147 }
1148
1149 t1_decode_cblk(
1150 t1,
1151 cblk,
1152 orient,
1153 tcp->tccps[compno].roishift,
1154 tcp->tccps[compno].cblksty);
1155
1156 x = cblk->x0 - band->x0;
1157 y = cblk->y0 - band->y0;
1158 if (band->bandno & 1) {
1159 opj_tcd_resolution_t *pres = &tilec->resolutions[resno - 1];
1160 x += pres->x1 - pres->x0;
1161 }
1162 if (band->bandno & 2) {
1163 opj_tcd_resolution_t *pres = &tilec->resolutions[resno - 1];
1164 y += pres->y1 - pres->y0;
1165 }
1166
1167 cblk_w = cblk->x1 - cblk->x0;
1168 cblk_h = cblk->y1 - cblk->y0;
1169
1170 if (tcp->tccps[compno].roishift) {
1171 int thresh = 1 << tcp->tccps[compno].roishift;
1172 for (j = 0; j < cblk_h; ++j) {
1173 for (i = 0; i < cblk_w; ++i) {
1174 int val = t1->data[(j * t1->w) + i];
1175 int mag = int_abs(val);
1176 if (mag >= thresh) {
1177 mag >>= tcp->tccps[compno].roishift;
1178 t1->data[(j * t1->w) + i] = val < 0 ? -mag : mag;
1179 }
1180 }
1181 }
1182 }
1183
1184 w = tilec->x1 - tilec->x0;
1185 if (tcp->tccps[compno].qmfbid == 1) {
1186 for (j = 0; j < cblk_h; ++j) {
1187 for (i = 0; i < cblk_w; ++i) {
1188 tilec->data[x + i + (y + j) * w] = t1->data[(j * t1->w) + i]/2;
1189 }
1190 }
1191 } else { /* if (tcp->tccps[compno].qmfbid == 0) */
1192 for (j = 0; j < cblk_h; ++j) {
1193 for (i = 0; i < cblk_w; ++i) {
1194 if (t1->data[(j * t1->w) + i] >> 1 == 0) {
1195 tilec->data[x + i + (y + j) * w] = 0;
1196 } else {
1197 double tmp = (double)(t1->data[(j * t1->w) + i] * band->stepsize * 4096.0);
1198 int tmp2 = ((int) (floor(fabs(tmp)))) + ((int) floor(fabs(tmp*2))%2);
1199 tilec->data[x + i + (y + j) * w] = ((tmp<0)?-tmp2:tmp2);
1200 }
1201 }
1202 }
1203 }
1204 } /* cblkno */
1205 } /* precno */
1206 } /* bandno */
1207 } /* resno */
1208 } /* compno */
1209}
1210
generated by cgit v1.1 at 2024-11-13 14:45:26 +0000