jpeg2000: Update pixel format support
[libav.git] / libavcodec / jpeg2000dec.c
CommitLineData
c81a7063
NB
1/*
2 * JPEG 2000 image decoder
3 * Copyright (c) 2007 Kamil Nowosad
4 * Copyright (c) 2013 Nicolas Bertrand <nicoinattendu@gmail.com>
5 *
6 * This file is part of Libav.
7 *
8 * Libav is free software; you can redistribute it and/or
9 * modify it under the terms of the GNU Lesser General Public
10 * License as published by the Free Software Foundation; either
11 * version 2.1 of the License, or (at your option) any later version.
12 *
13 * Libav is distributed in the hope that it will be useful,
14 * but WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
16 * Lesser General Public License for more details.
17 *
18 * You should have received a copy of the GNU Lesser General Public
19 * License along with Libav; if not, write to the Free Software
20 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
21 */
22
23/**
24 * @file
25 * JPEG 2000 image decoder
26 */
27
28#include "libavutil/common.h"
29#include "libavutil/opt.h"
30#include "avcodec.h"
31#include "bytestream.h"
32#include "internal.h"
2e2d2466 33#include "thread.h"
c81a7063
NB
34#include "jpeg2000.h"
35
36#define JP2_SIG_TYPE 0x6A502020
37#define JP2_SIG_VALUE 0x0D0A870A
38#define JP2_CODESTREAM 0x6A703263
39
40#define HAD_COC 0x01
41#define HAD_QCC 0x02
42
43typedef struct Jpeg2000TilePart {
44 uint16_t tp_idx; // Tile-part index
45 uint8_t tile_index; // Tile index who refers the tile-part
46 uint32_t tp_len; // Length of tile-part
1a3598aa 47 GetByteContext tpg; // bit stream in tile-part
c81a7063
NB
48} Jpeg2000TilePart;
49
50/* RMK: For JPEG2000 DCINEMA 3 tile-parts in a tile
51 * one per component, so tile_part elements have a size of 3 */
52typedef struct Jpeg2000Tile {
53 Jpeg2000Component *comp;
54 uint8_t properties[4];
55 Jpeg2000CodingStyle codsty[4];
56 Jpeg2000QuantStyle qntsty[4];
57 Jpeg2000TilePart tile_part[3];
58} Jpeg2000Tile;
59
60typedef struct Jpeg2000DecoderContext {
61 AVClass *class;
62 AVCodecContext *avctx;
1a3598aa 63 GetByteContext g;
c81a7063
NB
64
65 int width, height;
66 int image_offset_x, image_offset_y;
67 int tile_offset_x, tile_offset_y;
68 uint8_t cbps[4]; // bits per sample in particular components
69 uint8_t sgnd[4]; // if a component is signed
70 uint8_t properties[4];
71 int cdx[4], cdy[4];
72 int precision;
73 int ncomponents;
74 int tile_width, tile_height;
278a923c 75 unsigned numXtiles, numYtiles;
c81a7063
NB
76 int maxtilelen;
77
78 Jpeg2000CodingStyle codsty[4];
79 Jpeg2000QuantStyle qntsty[4];
80
c81a7063
NB
81 int bit_index;
82
83 int16_t curtileno;
84 Jpeg2000Tile *tile;
85
86 /*options parameters*/
f9581f14 87 int reduction_factor;
c81a7063
NB
88} Jpeg2000DecoderContext;
89
90/* get_bits functions for JPEG2000 packet bitstream
91 * It is a get_bit function with a bit-stuffing routine. If the value of the
92 * byte is 0xFF, the next byte includes an extra zero bit stuffed into the MSB.
93 * cf. ISO-15444-1:2002 / B.10.1 Bit-stuffing routine */
94static int get_bits(Jpeg2000DecoderContext *s, int n)
95{
96 int res = 0;
c81a7063
NB
97 while (--n >= 0) {
98 res <<= 1;
99 if (s->bit_index == 0) {
1a3598aa 100 s->bit_index = 7 + (bytestream2_get_byte(&s->g) != 0xFFu);
c81a7063
NB
101 }
102 s->bit_index--;
1a3598aa 103 res |= (bytestream2_peek_byte(&s->g) >> s->bit_index) & 1;
c81a7063
NB
104 }
105 return res;
106}
107
108static void jpeg2000_flush(Jpeg2000DecoderContext *s)
109{
1a3598aa
MN
110 if (bytestream2_get_byte(&s->g) == 0xff)
111 bytestream2_skip(&s->g, 1);
c81a7063 112 s->bit_index = 8;
c81a7063
NB
113}
114
115/* decode the value stored in node */
116static int tag_tree_decode(Jpeg2000DecoderContext *s, Jpeg2000TgtNode *node,
117 int threshold)
118{
119 Jpeg2000TgtNode *stack[30];
120 int sp = -1, curval = 0;
121
122 while (node && !node->vis) {
123 stack[++sp] = node;
124 node = node->parent;
125 }
126
127 if (node)
128 curval = node->val;
129 else
130 curval = stack[sp]->val;
131
132 while (curval < threshold && sp >= 0) {
133 if (curval < stack[sp]->val)
134 curval = stack[sp]->val;
135 while (curval < threshold) {
136 int ret;
137 if ((ret = get_bits(s, 1)) > 0) {
138 stack[sp]->vis++;
139 break;
140 } else if (!ret)
141 curval++;
142 else
143 return ret;
144 }
145 stack[sp]->val = curval;
146 sp--;
147 }
148 return curval;
149}
150
151/* marker segments */
152/* get sizes and offsets of image, tiles; number of components */
153static int get_siz(Jpeg2000DecoderContext *s)
154{
155 int i;
278a923c 156 int ncomponents;
c81a7063 157
1a3598aa 158 if (bytestream2_get_bytes_left(&s->g) < 36)
5efadcb8 159 return AVERROR_INVALIDDATA;
c81a7063 160
1a3598aa
MN
161 s->avctx->profile = bytestream2_get_be16u(&s->g); // Rsiz
162 s->width = bytestream2_get_be32u(&s->g); // Width
163 s->height = bytestream2_get_be32u(&s->g); // Height
164 s->image_offset_x = bytestream2_get_be32u(&s->g); // X0Siz
165 s->image_offset_y = bytestream2_get_be32u(&s->g); // Y0Siz
166 s->tile_width = bytestream2_get_be32u(&s->g); // XTSiz
167 s->tile_height = bytestream2_get_be32u(&s->g); // YTSiz
168 s->tile_offset_x = bytestream2_get_be32u(&s->g); // XT0Siz
169 s->tile_offset_y = bytestream2_get_be32u(&s->g); // YT0Siz
278a923c
MN
170 ncomponents = bytestream2_get_be16u(&s->g); // CSiz
171
172 if (ncomponents <= 0) {
173 av_log(s->avctx, AV_LOG_ERROR, "Invalid number of components: %d\n",
174 s->ncomponents);
175 return AVERROR_INVALIDDATA;
176 }
177
178 if (ncomponents > 3) {
179 avpriv_request_sample(s->avctx, "Support for %d components",
180 s->ncomponents);
181 return AVERROR_PATCHWELCOME;
182 }
183
184 s->ncomponents = ncomponents;
185
186 if (s->tile_width <= 0 || s->tile_height <= 0 ||
187 s->tile_width > s->width || s->tile_height > s->height) {
188 av_log(s->avctx, AV_LOG_ERROR, "Invalid tile dimension %dx%d.\n",
189 s->tile_width, s->tile_height);
190 return AVERROR_INVALIDDATA;
191 }
1a3598aa
MN
192
193 if (bytestream2_get_bytes_left(&s->g) < 3 * s->ncomponents)
5efadcb8 194 return AVERROR_INVALIDDATA;
c81a7063
NB
195
196 for (i = 0; i < s->ncomponents; i++) { // Ssiz_i XRsiz_i, YRsiz_i
1a3598aa 197 uint8_t x = bytestream2_get_byteu(&s->g);
c81a7063
NB
198 s->cbps[i] = (x & 0x7f) + 1;
199 s->precision = FFMAX(s->cbps[i], s->precision);
ac921338 200 s->sgnd[i] = !!(x & 0x80);
1a3598aa
MN
201 s->cdx[i] = bytestream2_get_byteu(&s->g);
202 s->cdy[i] = bytestream2_get_byteu(&s->g);
278a923c
MN
203
204 if (s->cdx[i] != 1 || s->cdy[i] != 1) {
205 avpriv_request_sample(s->avctx,
206 "CDxy values %d %d for component %d",
207 s->cdx[i], s->cdy[i], i);
208 if (!s->cdx[i] || !s->cdy[i])
209 return AVERROR_INVALIDDATA;
210 else
211 return AVERROR_PATCHWELCOME;
212 }
c81a7063
NB
213 }
214
215 s->numXtiles = ff_jpeg2000_ceildiv(s->width - s->tile_offset_x, s->tile_width);
216 s->numYtiles = ff_jpeg2000_ceildiv(s->height - s->tile_offset_y, s->tile_height);
217
278a923c
MN
218 s->tile = av_mallocz_array(s->numXtiles * s->numYtiles, sizeof(*s->tile));
219 if (!s->tile) {
220 s->numXtiles = s->numYtiles = 0;
c81a7063 221 return AVERROR(ENOMEM);
278a923c 222 }
c81a7063
NB
223
224 for (i = 0; i < s->numXtiles * s->numYtiles; i++) {
225 Jpeg2000Tile *tile = s->tile + i;
226
227 tile->comp = av_mallocz(s->ncomponents * sizeof(*tile->comp));
228 if (!tile->comp)
229 return AVERROR(ENOMEM);
230 }
231
232 /* compute image size with reduction factor */
233 s->avctx->width = ff_jpeg2000_ceildivpow2(s->width - s->image_offset_x,
234 s->reduction_factor);
235 s->avctx->height = ff_jpeg2000_ceildivpow2(s->height - s->image_offset_y,
236 s->reduction_factor);
237
33e665a6
MN
238 switch (s->ncomponents) {
239 case 1:
240 if (s->precision > 8)
241 s->avctx->pix_fmt = AV_PIX_FMT_GRAY16;
242 else
243 s->avctx->pix_fmt = AV_PIX_FMT_GRAY8;
c81a7063 244 break;
33e665a6
MN
245 case 3:
246 switch (s->avctx->profile) {
247 case FF_PROFILE_JPEG2000_DCINEMA_2K:
248 case FF_PROFILE_JPEG2000_DCINEMA_4K:
249 /* XYZ color-space for digital cinema profiles */
250 s->avctx->pix_fmt = AV_PIX_FMT_XYZ12;
c81a7063 251 break;
33e665a6 252 default:
c81a7063
NB
253 if (s->precision > 8)
254 s->avctx->pix_fmt = AV_PIX_FMT_RGB48;
255 else
256 s->avctx->pix_fmt = AV_PIX_FMT_RGB24;
257 break;
c81a7063
NB
258 }
259 break;
33e665a6
MN
260 case 4:
261 s->avctx->pix_fmt = AV_PIX_FMT_RGBA;
262 break;
263 default:
264 /* pixel format can not be identified */
265 s->avctx->pix_fmt = AV_PIX_FMT_NONE;
266 break;
c81a7063
NB
267 }
268 return 0;
269}
270
271/* get common part for COD and COC segments */
272static int get_cox(Jpeg2000DecoderContext *s, Jpeg2000CodingStyle *c)
273{
274 uint8_t byte;
275
1a3598aa
MN
276 if (bytestream2_get_bytes_left(&s->g) < 5)
277 return AVERROR_INVALIDDATA;
278
5650e331
LB
279 /* nreslevels = number of resolution levels
280 = number of decomposition level +1 */
1a3598aa 281 c->nreslevels = bytestream2_get_byteu(&s->g) + 1;
5650e331
LB
282
283 if (c->nreslevels > JPEG2000_MAX_RESLEVELS)
284 return AVERROR_INVALIDDATA;
c81a7063
NB
285
286 /* compute number of resolution levels to decode */
287 if (c->nreslevels < s->reduction_factor)
288 c->nreslevels2decode = 1;
289 else
290 c->nreslevels2decode = c->nreslevels - s->reduction_factor;
291
1a3598aa
MN
292 c->log2_cblk_width = bytestream2_get_byteu(&s->g) + 2; // cblk width
293 c->log2_cblk_height = bytestream2_get_byteu(&s->g) + 2; // cblk height
c81a7063 294
fbcc03db
MN
295 if (c->log2_cblk_width > 10 || c->log2_cblk_height > 10 ||
296 c->log2_cblk_width + c->log2_cblk_height > 12) {
297 av_log(s->avctx, AV_LOG_ERROR, "cblk size invalid\n");
298 return AVERROR_INVALIDDATA;
299 }
300
1a3598aa 301 c->cblk_style = bytestream2_get_byteu(&s->g);
c81a7063 302 if (c->cblk_style != 0) { // cblk style
5efadcb8
LB
303 avpriv_request_sample(s->avctx, "Support for extra cblk styles");
304 return AVERROR_PATCHWELCOME;
c81a7063 305 }
1a3598aa 306 c->transform = bytestream2_get_byteu(&s->g); // DWT transformation type
c81a7063
NB
307 /* set integer 9/7 DWT in case of BITEXACT flag */
308 if ((s->avctx->flags & CODEC_FLAG_BITEXACT) && (c->transform == FF_DWT97))
309 c->transform = FF_DWT97_INT;
310
311 if (c->csty & JPEG2000_CSTY_PREC) {
312 int i;
313 for (i = 0; i < c->nreslevels; i++) {
1a3598aa 314 byte = bytestream2_get_byte(&s->g);
c81a7063
NB
315 c->log2_prec_widths[i] = byte & 0x0F; // precinct PPx
316 c->log2_prec_heights[i] = (byte >> 4) & 0x0F; // precinct PPy
317 }
86a2602e
MN
318 } else {
319 memset(c->log2_prec_widths , 15, sizeof(c->log2_prec_widths ));
320 memset(c->log2_prec_heights, 15, sizeof(c->log2_prec_heights));
c81a7063
NB
321 }
322 return 0;
323}
324
325/* get coding parameters for a particular tile or whole image*/
326static int get_cod(Jpeg2000DecoderContext *s, Jpeg2000CodingStyle *c,
327 uint8_t *properties)
328{
329 Jpeg2000CodingStyle tmp;
ef35d6db 330 int compno, ret;
c81a7063 331
1a3598aa 332 if (bytestream2_get_bytes_left(&s->g) < 5)
5efadcb8 333 return AVERROR_INVALIDDATA;
c81a7063 334
1a3598aa 335 tmp.csty = bytestream2_get_byteu(&s->g);
c81a7063
NB
336
337 // get progression order
1a3598aa 338 tmp.prog_order = bytestream2_get_byteu(&s->g);
c81a7063 339
1a3598aa
MN
340 tmp.nlayers = bytestream2_get_be16u(&s->g);
341 tmp.mct = bytestream2_get_byteu(&s->g); // multiple component transformation
c81a7063 342
cf04af20
MN
343 if (tmp.mct && s->ncomponents < 3) {
344 av_log(s->avctx, AV_LOG_ERROR,
345 "MCT %d with too few components (%d)\n",
346 tmp.mct, s->ncomponents);
347 return AVERROR_INVALIDDATA;
348 }
349
ef35d6db
MN
350 if ((ret = get_cox(s, &tmp)) < 0)
351 return ret;
352
c81a7063
NB
353 for (compno = 0; compno < s->ncomponents; compno++)
354 if (!(properties[compno] & HAD_COC))
355 memcpy(c + compno, &tmp, sizeof(tmp));
356 return 0;
357}
358
359/* Get coding parameters for a component in the whole image or a
360 * particular tile. */
361static int get_coc(Jpeg2000DecoderContext *s, Jpeg2000CodingStyle *c,
362 uint8_t *properties)
363{
ef35d6db 364 int compno, ret;
c81a7063 365
1a3598aa 366 if (bytestream2_get_bytes_left(&s->g) < 2)
5efadcb8 367 return AVERROR_INVALIDDATA;
c81a7063 368
1a3598aa 369 compno = bytestream2_get_byteu(&s->g);
c81a7063 370
eae63e3c
MN
371 if (compno >= s->ncomponents) {
372 av_log(s->avctx, AV_LOG_ERROR,
373 "Invalid compno %d. There are %d components in the image.\n",
374 compno, s->ncomponents);
375 return AVERROR_INVALIDDATA;
376 }
377
c81a7063 378 c += compno;
1a3598aa 379 c->csty = bytestream2_get_byteu(&s->g);
ef35d6db
MN
380
381 if ((ret = get_cox(s, c)) < 0)
382 return ret;
c81a7063
NB
383
384 properties[compno] |= HAD_COC;
385 return 0;
386}
387
388/* Get common part for QCD and QCC segments. */
389static int get_qcx(Jpeg2000DecoderContext *s, int n, Jpeg2000QuantStyle *q)
390{
391 int i, x;
392
1a3598aa 393 if (bytestream2_get_bytes_left(&s->g) < 1)
5efadcb8 394 return AVERROR_INVALIDDATA;
c81a7063 395
1a3598aa 396 x = bytestream2_get_byteu(&s->g); // Sqcd
c81a7063
NB
397
398 q->nguardbits = x >> 5;
399 q->quantsty = x & 0x1f;
400
401 if (q->quantsty == JPEG2000_QSTY_NONE) {
402 n -= 3;
1a3598aa
MN
403 if (bytestream2_get_bytes_left(&s->g) < n ||
404 n > JPEG2000_MAX_DECLEVELS)
5efadcb8 405 return AVERROR_INVALIDDATA;
c81a7063 406 for (i = 0; i < n; i++)
1a3598aa 407 q->expn[i] = bytestream2_get_byteu(&s->g) >> 3;
c81a7063 408 } else if (q->quantsty == JPEG2000_QSTY_SI) {
1a3598aa 409 if (bytestream2_get_bytes_left(&s->g) < 2)
5efadcb8 410 return AVERROR_INVALIDDATA;
1a3598aa 411 x = bytestream2_get_be16u(&s->g);
c81a7063
NB
412 q->expn[0] = x >> 11;
413 q->mant[0] = x & 0x7ff;
be327100 414 for (i = 1; i < JPEG2000_MAX_DECLEVELS * 3; i++) {
c81a7063
NB
415 int curexpn = FFMAX(0, q->expn[0] - (i - 1) / 3);
416 q->expn[i] = curexpn;
417 q->mant[i] = q->mant[0];
418 }
419 } else {
420 n = (n - 3) >> 1;
1a3598aa
MN
421 if (bytestream2_get_bytes_left(&s->g) < 2 * n ||
422 n > JPEG2000_MAX_DECLEVELS)
5efadcb8 423 return AVERROR_INVALIDDATA;
c81a7063 424 for (i = 0; i < n; i++) {
1a3598aa 425 x = bytestream2_get_be16u(&s->g);
c81a7063
NB
426 q->expn[i] = x >> 11;
427 q->mant[i] = x & 0x7ff;
428 }
429 }
430 return 0;
431}
432
433/* Get quantization parameters for a particular tile or a whole image. */
434static int get_qcd(Jpeg2000DecoderContext *s, int n, Jpeg2000QuantStyle *q,
435 uint8_t *properties)
436{
437 Jpeg2000QuantStyle tmp;
5efadcb8 438 int compno, ret;
c81a7063 439
5efadcb8
LB
440 if ((ret = get_qcx(s, n, &tmp)) < 0)
441 return ret;
c81a7063
NB
442 for (compno = 0; compno < s->ncomponents; compno++)
443 if (!(properties[compno] & HAD_QCC))
444 memcpy(q + compno, &tmp, sizeof(tmp));
445 return 0;
446}
447
448/* Get quantization parameters for a component in the whole image
449 * on in a particular tile. */
450static int get_qcc(Jpeg2000DecoderContext *s, int n, Jpeg2000QuantStyle *q,
451 uint8_t *properties)
452{
453 int compno;
454
1a3598aa 455 if (bytestream2_get_bytes_left(&s->g) < 1)
5efadcb8 456 return AVERROR_INVALIDDATA;
c81a7063 457
eae63e3c
MN
458 compno = bytestream2_get_byteu(&s->g);
459
460 if (compno >= s->ncomponents) {
461 av_log(s->avctx, AV_LOG_ERROR,
462 "Invalid compno %d. There are %d components in the image.\n",
463 compno, s->ncomponents);
464 return AVERROR_INVALIDDATA;
465 }
466
c81a7063
NB
467 properties[compno] |= HAD_QCC;
468 return get_qcx(s, n - 1, q + compno);
469}
470
471/* Get start of tile segment. */
5efadcb8 472static int get_sot(Jpeg2000DecoderContext *s, int n)
c81a7063
NB
473{
474 Jpeg2000TilePart *tp;
475 uint16_t Isot;
476 uint32_t Psot;
477 uint8_t TPsot;
478
1a3598aa 479 if (bytestream2_get_bytes_left(&s->g) < 8)
5efadcb8 480 return AVERROR_INVALIDDATA;
c81a7063 481
1a3598aa 482 Isot = bytestream2_get_be16u(&s->g); // Isot
d3cb302b
MN
483 if (Isot >= s->numXtiles * s->numYtiles)
484 return AVERROR_INVALIDDATA;
485
c81a7063 486 if (Isot) {
5efadcb8
LB
487 avpriv_request_sample(s->avctx, "Support for more than one tile");
488 return AVERROR_PATCHWELCOME;
c81a7063 489 }
1a3598aa
MN
490 Psot = bytestream2_get_be32u(&s->g); // Psot
491 TPsot = bytestream2_get_byteu(&s->g); // TPsot
c81a7063
NB
492
493 /* Read TNSot but not used */
1a3598aa 494 bytestream2_get_byteu(&s->g); // TNsot
c81a7063 495
d3cb302b
MN
496 if (Psot > bytestream2_get_bytes_left(&s->g) + n + 2) {
497 av_log(s->avctx, AV_LOG_ERROR, "Psot %d too big\n", Psot);
498 return AVERROR_INVALIDDATA;
499 }
500
501 if (TPsot >= FF_ARRAY_ELEMS(s->tile[Isot].tile_part)) {
502 avpriv_request_sample(s->avctx, "Support for %d components", TPsot);
503 return AVERROR_PATCHWELCOME;
504 }
505
c81a7063
NB
506 tp = s->tile[s->curtileno].tile_part + TPsot;
507 tp->tile_index = Isot;
508 tp->tp_len = Psot;
509 tp->tp_idx = TPsot;
510
511 /* Start of bit stream. Pointer to SOD marker
512 * Check SOD marker is present. */
1a3598aa
MN
513 if (JPEG2000_SOD == bytestream2_get_be16(&s->g)) {
514 bytestream2_init(&tp->tpg, s->g.buffer, tp->tp_len - n - 4);
515 bytestream2_skip(&s->g, tp->tp_len - n - 4);
516 } else {
c81a7063 517 av_log(s->avctx, AV_LOG_ERROR, "SOD marker not found \n");
5efadcb8 518 return AVERROR_INVALIDDATA;
c81a7063
NB
519 }
520
521 /* End address of bit stream =
522 * start address + (Psot - size of SOT HEADER(n)
523 * - size of SOT MARKER(2) - size of SOD marker(2) */
c81a7063
NB
524
525 return 0;
526}
527
528/* Tile-part lengths: see ISO 15444-1:2002, section A.7.1
529 * Used to know the number of tile parts and lengths.
530 * There may be multiple TLMs in the header.
531 * TODO: The function is not used for tile-parts management, nor anywhere else.
532 * It can be useful to allocate memory for tile parts, before managing the SOT
533 * markers. Parsing the TLM header is needed to increment the input header
534 * buffer.
535 * This marker is mandatory for DCI. */
536static uint8_t get_tlm(Jpeg2000DecoderContext *s, int n)
537{
538 uint8_t Stlm, ST, SP, tile_tlm, i;
1a3598aa
MN
539 bytestream2_get_byte(&s->g); /* Ztlm: skipped */
540 Stlm = bytestream2_get_byte(&s->g);
c81a7063
NB
541
542 // too complex ? ST = ((Stlm >> 4) & 0x01) + ((Stlm >> 4) & 0x02);
543 ST = (Stlm >> 4) & 0x03;
544 // TODO: Manage case of ST = 0b11 --> raise error
545 SP = (Stlm >> 6) & 0x01;
546 tile_tlm = (n - 4) / ((SP + 1) * 2 + ST);
547 for (i = 0; i < tile_tlm; i++) {
548 switch (ST) {
549 case 0:
550 break;
551 case 1:
1a3598aa 552 bytestream2_get_byte(&s->g);
c81a7063
NB
553 break;
554 case 2:
1a3598aa 555 bytestream2_get_be16(&s->g);
c81a7063
NB
556 break;
557 case 3:
1a3598aa 558 bytestream2_get_be32(&s->g);
c81a7063
NB
559 break;
560 }
561 if (SP == 0) {
1a3598aa 562 bytestream2_get_be16(&s->g);
c81a7063 563 } else {
1a3598aa 564 bytestream2_get_be32(&s->g);
c81a7063
NB
565 }
566 }
567 return 0;
568}
569
570static int init_tile(Jpeg2000DecoderContext *s, int tileno)
571{
572 int compno;
573 int tilex = tileno % s->numXtiles;
574 int tiley = tileno / s->numXtiles;
575 Jpeg2000Tile *tile = s->tile + tileno;
576 Jpeg2000CodingStyle *codsty;
577 Jpeg2000QuantStyle *qntsty;
578
579 if (!tile->comp)
580 return AVERROR(ENOMEM);
581
582 /* copy codsty, qnsty to tile. TODO: Is it the best way?
583 * codsty, qnsty is an array of 4 structs Jpeg2000CodingStyle
584 * and Jpeg2000QuantStyle */
585 memcpy(tile->codsty, s->codsty, s->ncomponents * sizeof(*codsty));
586 memcpy(tile->qntsty, s->qntsty, s->ncomponents * sizeof(*qntsty));
587
588 for (compno = 0; compno < s->ncomponents; compno++) {
589 Jpeg2000Component *comp = tile->comp + compno;
590 int ret; // global bandno
591 codsty = tile->codsty + compno;
592 qntsty = tile->qntsty + compno;
593
594 comp->coord_o[0][0] = FFMAX(tilex * s->tile_width + s->tile_offset_x, s->image_offset_x);
595 comp->coord_o[0][1] = FFMIN((tilex + 1) * s->tile_width + s->tile_offset_x, s->width);
596 comp->coord_o[1][0] = FFMAX(tiley * s->tile_height + s->tile_offset_y, s->image_offset_y);
597 comp->coord_o[1][1] = FFMIN((tiley + 1) * s->tile_height + s->tile_offset_y, s->height);
598
f9581f14
MN
599 comp->coord[0][0] = ff_jpeg2000_ceildivpow2(comp->coord_o[0][0], s->reduction_factor);
600 comp->coord[0][1] = ff_jpeg2000_ceildivpow2(comp->coord_o[0][1], s->reduction_factor);
601 comp->coord[1][0] = ff_jpeg2000_ceildivpow2(comp->coord_o[1][0], s->reduction_factor);
602 comp->coord[1][1] = ff_jpeg2000_ceildivpow2(comp->coord_o[1][1], s->reduction_factor);
c81a7063
NB
603
604 if (ret = ff_jpeg2000_init_component(comp, codsty, qntsty,
605 s->cbps[compno], s->cdx[compno],
606 s->cdy[compno], s->avctx))
607 return ret;
608 }
609 return 0;
610}
611
612/* Read the number of coding passes. */
613static int getnpasses(Jpeg2000DecoderContext *s)
614{
615 int num;
616 if (!get_bits(s, 1))
617 return 1;
618 if (!get_bits(s, 1))
619 return 2;
620 if ((num = get_bits(s, 2)) != 3)
621 return num < 0 ? num : 3 + num;
622 if ((num = get_bits(s, 5)) != 31)
623 return num < 0 ? num : 6 + num;
624 num = get_bits(s, 7);
625 return num < 0 ? num : 37 + num;
626}
627
628static int getlblockinc(Jpeg2000DecoderContext *s)
629{
630 int res = 0, ret;
631 while (ret = get_bits(s, 1)) {
632 if (ret < 0)
633 return ret;
634 res++;
635 }
636 return res;
637}
638
639static int jpeg2000_decode_packet(Jpeg2000DecoderContext *s,
640 Jpeg2000CodingStyle *codsty,
641 Jpeg2000ResLevel *rlevel, int precno,
642 int layno, uint8_t *expn, int numgbits)
643{
644 int bandno, cblkno, ret, nb_code_blocks;
645
646 if (!(ret = get_bits(s, 1))) {
647 jpeg2000_flush(s);
648 return 0;
649 } else if (ret < 0)
650 return ret;
651
652 for (bandno = 0; bandno < rlevel->nbands; bandno++) {
653 Jpeg2000Band *band = rlevel->band + bandno;
654 Jpeg2000Prec *prec = band->prec + precno;
655
656 if (band->coord[0][0] == band->coord[0][1] ||
657 band->coord[1][0] == band->coord[1][1])
658 continue;
c81a7063
NB
659 nb_code_blocks = prec->nb_codeblocks_height *
660 prec->nb_codeblocks_width;
661 for (cblkno = 0; cblkno < nb_code_blocks; cblkno++) {
662 Jpeg2000Cblk *cblk = prec->cblk + cblkno;
663 int incl, newpasses, llen;
664
665 if (cblk->npasses)
666 incl = get_bits(s, 1);
667 else
668 incl = tag_tree_decode(s, prec->cblkincl + cblkno, layno + 1) == layno;
669 if (!incl)
670 continue;
671 else if (incl < 0)
672 return incl;
673
17e5d614
MN
674 if (!cblk->npasses) {
675 int v = expn[bandno] + numgbits - 1 -
676 tag_tree_decode(s, prec->zerobits + cblkno, 100);
677 if (v < 0) {
678 av_log(s->avctx, AV_LOG_ERROR,
679 "nonzerobits %d invalid\n", v);
680 return AVERROR_INVALIDDATA;
681 }
682 cblk->nonzerobits = v;
683 }
c81a7063
NB
684 if ((newpasses = getnpasses(s)) < 0)
685 return newpasses;
686 if ((llen = getlblockinc(s)) < 0)
687 return llen;
688 cblk->lblock += llen;
689 if ((ret = get_bits(s, av_log2(newpasses) + cblk->lblock)) < 0)
690 return ret;
7e201d57
LB
691 if (ret > sizeof(cblk->data)) {
692 avpriv_request_sample(s->avctx,
693 "Block with lengthinc greater than %zu",
694 sizeof(cblk->data));
695 return AVERROR_PATCHWELCOME;
696 }
c81a7063
NB
697 cblk->lengthinc = ret;
698 cblk->npasses += newpasses;
699 }
700 }
701 jpeg2000_flush(s);
702
703 if (codsty->csty & JPEG2000_CSTY_EPH) {
1a3598aa
MN
704 if (bytestream2_peek_be16(&s->g) == JPEG2000_EPH)
705 bytestream2_skip(&s->g, 2);
c81a7063
NB
706 else
707 av_log(s->avctx, AV_LOG_ERROR, "EPH marker not found.\n");
708 }
709
710 for (bandno = 0; bandno < rlevel->nbands; bandno++) {
711 Jpeg2000Band *band = rlevel->band + bandno;
712 Jpeg2000Prec *prec = band->prec + precno;
713
714 nb_code_blocks = prec->nb_codeblocks_height * prec->nb_codeblocks_width;
715 for (cblkno = 0; cblkno < nb_code_blocks; cblkno++) {
716 Jpeg2000Cblk *cblk = prec->cblk + cblkno;
1a3598aa 717 if (bytestream2_get_bytes_left(&s->g) < cblk->lengthinc)
5efadcb8 718 return AVERROR_INVALIDDATA;
28816f9d
NB
719 /* Code-block data can be empty. In that case initialize data
720 * with 0xFFFF. */
721 if (cblk->lengthinc > 0) {
1a3598aa 722 bytestream2_get_bufferu(&s->g, cblk->data, cblk->lengthinc);
28816f9d
NB
723 } else {
724 cblk->data[0] = 0xFF;
725 cblk->data[1] = 0xFF;
726 }
c81a7063
NB
727 cblk->length += cblk->lengthinc;
728 cblk->lengthinc = 0;
729 }
730 }
731 return 0;
732}
733
734static int jpeg2000_decode_packets(Jpeg2000DecoderContext *s, Jpeg2000Tile *tile)
735{
5efadcb8 736 int layno, reslevelno, compno, precno, ok_reslevel, ret;
c81a7063
NB
737 uint8_t prog_order = tile->codsty[0].prog_order;
738 uint16_t x;
739 uint16_t y;
740
741 s->bit_index = 8;
742 switch (prog_order) {
743 case JPEG2000_PGOD_LRCP:
744 for (layno = 0; layno < tile->codsty[0].nlayers; layno++) {
745 ok_reslevel = 1;
746 for (reslevelno = 0; ok_reslevel; reslevelno++) {
747 ok_reslevel = 0;
748 for (compno = 0; compno < s->ncomponents; compno++) {
749 Jpeg2000CodingStyle *codsty = tile->codsty + compno;
750 Jpeg2000QuantStyle *qntsty = tile->qntsty + compno;
751 if (reslevelno < codsty->nreslevels) {
752 Jpeg2000ResLevel *rlevel = tile->comp[compno].reslevel +
753 reslevelno;
754 ok_reslevel = 1;
755 for (precno = 0; precno < rlevel->num_precincts_x * rlevel->num_precincts_y; precno++)
5efadcb8
LB
756 if ((ret = jpeg2000_decode_packet(s,
757 codsty, rlevel,
758 precno, layno,
759 qntsty->expn + (reslevelno ? 3 * (reslevelno - 1) + 1 : 0),
760 qntsty->nguardbits)) < 0)
761 return ret;
c81a7063
NB
762 }
763 }
764 }
765 }
766 break;
767
768 case JPEG2000_PGOD_CPRL:
769 for (compno = 0; compno < s->ncomponents; compno++) {
770 Jpeg2000CodingStyle *codsty = tile->codsty + compno;
771 Jpeg2000QuantStyle *qntsty = tile->qntsty + compno;
772
773 /* Set bit stream buffer address according to tile-part.
774 * For DCinema one tile-part per component, so can be
775 * indexed by component. */
1a3598aa 776 s->g = tile->tile_part[compno].tpg;
c81a7063
NB
777
778 /* Position loop (y axis)
779 * TODO: Automate computing of step 256.
780 * Fixed here, but to be computed before entering here. */
781 for (y = 0; y < s->height; y += 256) {
782 /* Position loop (y axis)
783 * TODO: automate computing of step 256.
784 * Fixed here, but to be computed before entering here. */
785 for (x = 0; x < s->width; x += 256) {
786 for (reslevelno = 0; reslevelno < codsty->nreslevels; reslevelno++) {
787 uint16_t prcx, prcy;
788 uint8_t reducedresno = codsty->nreslevels - 1 -reslevelno; // ==> N_L - r
789 Jpeg2000ResLevel *rlevel = tile->comp[compno].reslevel + reslevelno;
790
791 if (!((y % (1 << (rlevel->log2_prec_height + reducedresno)) == 0) ||
792 (y == 0))) // TODO: 2nd condition simplified as try0 always =0 for dcinema
793 continue;
794
795 if (!((x % (1 << (rlevel->log2_prec_width + reducedresno)) == 0) ||
796 (x == 0))) // TODO: 2nd condition simplified as try0 always =0 for dcinema
797 continue;
798
799 // check if a precinct exists
800 prcx = ff_jpeg2000_ceildivpow2(x, reducedresno) >> rlevel->log2_prec_width;
801 prcy = ff_jpeg2000_ceildivpow2(y, reducedresno) >> rlevel->log2_prec_height;
802 precno = prcx + rlevel->num_precincts_x * prcy;
803 for (layno = 0; layno < tile->codsty[0].nlayers; layno++) {
5efadcb8
LB
804 if ((ret = jpeg2000_decode_packet(s, codsty, rlevel,
805 precno, layno,
806 qntsty->expn + (reslevelno ? 3 * (reslevelno - 1) + 1 : 0),
807 qntsty->nguardbits)) < 0)
808 return ret;
c81a7063
NB
809 }
810 }
811 }
812 }
813 }
814 break;
815
816 default:
817 break;
818 }
819
820 /* EOC marker reached */
1a3598aa 821 bytestream2_skip(&s->g, 2);
c81a7063
NB
822
823 return 0;
824}
825
826/* TIER-1 routines */
827static void decode_sigpass(Jpeg2000T1Context *t1, int width, int height,
828 int bpno, int bandno)
829{
830 int mask = 3 << (bpno - 1), y0, x, y;
831
832 for (y0 = 0; y0 < height; y0 += 4)
833 for (x = 0; x < width; x++)
834 for (y = y0; y < height && y < y0 + 4; y++)
835 if ((t1->flags[y + 1][x + 1] & JPEG2000_T1_SIG_NB)
836 && !(t1->flags[y + 1][x + 1] & (JPEG2000_T1_SIG | JPEG2000_T1_VIS))) {
837 if (ff_mqc_decode(&t1->mqc,
838 t1->mqc.cx_states +
839 ff_jpeg2000_getsigctxno(t1->flags[y + 1][x + 1],
840 bandno))) {
841 int xorbit, ctxno = ff_jpeg2000_getsgnctxno(t1->flags[y + 1][x + 1],
842 &xorbit);
843
844 t1->data[y][x] =
845 (ff_mqc_decode(&t1->mqc,
846 t1->mqc.cx_states + ctxno) ^ xorbit)
847 ? -mask : mask;
848
849 ff_jpeg2000_set_significance(t1, x, y,
850 t1->data[y][x] < 0);
851 }
852 t1->flags[y + 1][x + 1] |= JPEG2000_T1_VIS;
853 }
854}
855
856static void decode_refpass(Jpeg2000T1Context *t1, int width, int height,
857 int bpno)
858{
859 int phalf, nhalf;
860 int y0, x, y;
861
862 phalf = 1 << (bpno - 1);
863 nhalf = -phalf;
864
865 for (y0 = 0; y0 < height; y0 += 4)
866 for (x = 0; x < width; x++)
867 for (y = y0; y < height && y < y0 + 4; y++)
868 if ((t1->flags[y + 1][x + 1] & (JPEG2000_T1_SIG | JPEG2000_T1_VIS)) == JPEG2000_T1_SIG) {
869 int ctxno = ff_jpeg2000_getrefctxno(t1->flags[y + 1][x + 1]);
870 int r = ff_mqc_decode(&t1->mqc,
871 t1->mqc.cx_states + ctxno)
872 ? phalf : nhalf;
873 t1->data[y][x] += t1->data[y][x] < 0 ? -r : r;
874 t1->flags[y + 1][x + 1] |= JPEG2000_T1_REF;
875 }
876}
877
878static void decode_clnpass(Jpeg2000DecoderContext *s, Jpeg2000T1Context *t1,
879 int width, int height, int bpno, int bandno,
880 int seg_symbols)
881{
882 int mask = 3 << (bpno - 1), y0, x, y, runlen, dec;
883
884 for (y0 = 0; y0 < height; y0 += 4)
885 for (x = 0; x < width; x++) {
886 if (y0 + 3 < height &&
887 !((t1->flags[y0 + 1][x + 1] & (JPEG2000_T1_SIG_NB | JPEG2000_T1_VIS | JPEG2000_T1_SIG)) ||
888 (t1->flags[y0 + 2][x + 1] & (JPEG2000_T1_SIG_NB | JPEG2000_T1_VIS | JPEG2000_T1_SIG)) ||
889 (t1->flags[y0 + 3][x + 1] & (JPEG2000_T1_SIG_NB | JPEG2000_T1_VIS | JPEG2000_T1_SIG)) ||
890 (t1->flags[y0 + 4][x + 1] & (JPEG2000_T1_SIG_NB | JPEG2000_T1_VIS | JPEG2000_T1_SIG)))) {
891 if (!ff_mqc_decode(&t1->mqc, t1->mqc.cx_states + MQC_CX_RL))
892 continue;
893 runlen = ff_mqc_decode(&t1->mqc,
894 t1->mqc.cx_states + MQC_CX_UNI);
895 runlen = (runlen << 1) | ff_mqc_decode(&t1->mqc,
896 t1->mqc.cx_states +
897 MQC_CX_UNI);
898 dec = 1;
899 } else {
900 runlen = 0;
901 dec = 0;
902 }
903
904 for (y = y0 + runlen; y < y0 + 4 && y < height; y++) {
905 if (!dec) {
906 if (!(t1->flags[y + 1][x + 1] & (JPEG2000_T1_SIG | JPEG2000_T1_VIS)))
907 dec = ff_mqc_decode(&t1->mqc,
908 t1->mqc.cx_states +
909 ff_jpeg2000_getsigctxno(t1->flags[y + 1][x + 1],
910 bandno));
911 }
912 if (dec) {
913 int xorbit;
914 int ctxno = ff_jpeg2000_getsgnctxno(t1->flags[y + 1][x + 1],
915 &xorbit);
916 t1->data[y][x] = (ff_mqc_decode(&t1->mqc,
917 t1->mqc.cx_states + ctxno) ^
918 xorbit)
919 ? -mask : mask;
920 ff_jpeg2000_set_significance(t1, x, y, t1->data[y][x] < 0);
921 }
922 dec = 0;
923 t1->flags[y + 1][x + 1] &= ~JPEG2000_T1_VIS;
924 }
925 }
926 if (seg_symbols) {
927 int val;
928 val = ff_mqc_decode(&t1->mqc, t1->mqc.cx_states + MQC_CX_UNI);
929 val = (val << 1) + ff_mqc_decode(&t1->mqc, t1->mqc.cx_states + MQC_CX_UNI);
930 val = (val << 1) + ff_mqc_decode(&t1->mqc, t1->mqc.cx_states + MQC_CX_UNI);
931 val = (val << 1) + ff_mqc_decode(&t1->mqc, t1->mqc.cx_states + MQC_CX_UNI);
932 if (val != 0xa)
933 av_log(s->avctx, AV_LOG_ERROR,
934 "Segmentation symbol value incorrect\n");
935 }
936}
937
938static int decode_cblk(Jpeg2000DecoderContext *s, Jpeg2000CodingStyle *codsty,
939 Jpeg2000T1Context *t1, Jpeg2000Cblk *cblk,
940 int width, int height, int bandpos)
941{
942 int passno = cblk->npasses, pass_t = 2, bpno = cblk->nonzerobits - 1, y;
943
c81a7063
NB
944 for (y = 0; y < height; y++)
945 memset(t1->data[y], 0, width * sizeof(width));
28816f9d
NB
946 /* If code-block contains no compressed data: nothing to do. */
947 if (!cblk->length)
948 return 0;
949 for (y = 0; y < height + 2; y++)
950 memset(t1->flags[y], 0, (width + 2) * sizeof(width));
c81a7063
NB
951
952 ff_mqc_initdec(&t1->mqc, cblk->data);
953 cblk->data[cblk->length] = 0xff;
954 cblk->data[cblk->length + 1] = 0xff;
955
956 while (passno--) {
957 switch (pass_t) {
958 case 0:
959 decode_sigpass(t1, width, height, bpno + 1, bandpos);
960 break;
961 case 1:
962 decode_refpass(t1, width, height, bpno + 1);
963 break;
964 case 2:
965 decode_clnpass(s, t1, width, height, bpno + 1, bandpos,
966 codsty->cblk_style & JPEG2000_CBLK_SEGSYM);
967 break;
968 }
969
970 pass_t++;
971 if (pass_t == 3) {
972 bpno--;
973 pass_t = 0;
974 }
975 }
976 return 0;
977}
978
979/* TODO: Verify dequantization for lossless case
980 * comp->data can be float or int
981 * band->stepsize can be float or int
982 * depending on the type of DWT transformation.
983 * see ISO/IEC 15444-1:2002 A.6.1 */
984
985/* Float dequantization of a codeblock.*/
986static void dequantization_float(int x, int y, Jpeg2000Cblk *cblk,
987 Jpeg2000Component *comp,
988 Jpeg2000T1Context *t1, Jpeg2000Band *band)
989{
990 int i, j, idx;
5bf208f6 991 float *datap = &comp->f_data[(comp->coord[0][1] - comp->coord[0][0]) * y + x];
c81a7063
NB
992 for (j = 0; j < (cblk->coord[1][1] - cblk->coord[1][0]); ++j)
993 for (i = 0; i < (cblk->coord[0][1] - cblk->coord[0][0]); ++i) {
994 idx = (comp->coord[0][1] - comp->coord[0][0]) * j + i;
5bf208f6 995 datap[idx] = (float)(t1->data[j][i]) * band->f_stepsize;
c81a7063 996 }
c81a7063
NB
997}
998
999/* Integer dequantization of a codeblock.*/
1000static void dequantization_int(int x, int y, Jpeg2000Cblk *cblk,
1001 Jpeg2000Component *comp,
1002 Jpeg2000T1Context *t1, Jpeg2000Band *band)
1003{
1004 int i, j, idx;
5bf208f6 1005 int32_t *datap = &comp->i_data[(comp->coord[0][1] - comp->coord[0][0]) * y + x];
c81a7063
NB
1006 for (j = 0; j < (cblk->coord[1][1] - cblk->coord[1][0]); ++j)
1007 for (i = 0; i < (cblk->coord[0][1] - cblk->coord[0][0]); ++i) {
1008 idx = (comp->coord[0][1] - comp->coord[0][0]) * j + i;
1009 datap[idx] =
5bf208f6 1010 ((int32_t)(t1->data[j][i]) * band->i_stepsize + (1 << 15)) >> 16;
c81a7063 1011 }
c81a7063
NB
1012}
1013
1014/* Inverse ICT parameters in float and integer.
1015 * int value = (float value) * (1<<16) */
1016static const float f_ict_params[4] = {
1017 1.402f,
1018 0.34413f,
1019 0.71414f,
1020 1.772f
1021};
1022static const int i_ict_params[4] = {
1023 91881,
1024 22553,
1025 46802,
1026 116130
1027};
1028
2c3901b2 1029static void mct_decode(Jpeg2000DecoderContext *s, Jpeg2000Tile *tile)
c81a7063
NB
1030{
1031 int i, csize = 1;
c81a7063
NB
1032 int32_t *src[3], i0, i1, i2;
1033 float *srcf[3], i0f, i1f, i2f;
1034
1035 for (i = 0; i < 3; i++)
1036 if (tile->codsty[0].transform == FF_DWT97)
5bf208f6 1037 srcf[i] = tile->comp[i].f_data;
c81a7063 1038 else
5bf208f6 1039 src [i] = tile->comp[i].i_data;
c81a7063
NB
1040
1041 for (i = 0; i < 2; i++)
1042 csize *= tile->comp[0].coord[i][1] - tile->comp[0].coord[i][0];
1043 switch (tile->codsty[0].transform) {
1044 case FF_DWT97:
1045 for (i = 0; i < csize; i++) {
1046 i0f = *srcf[0] + (f_ict_params[0] * *srcf[2]);
1047 i1f = *srcf[0] - (f_ict_params[1] * *srcf[1])
1048 - (f_ict_params[2] * *srcf[2]);
1049 i2f = *srcf[0] + (f_ict_params[3] * *srcf[1]);
1050 *srcf[0]++ = i0f;
1051 *srcf[1]++ = i1f;
1052 *srcf[2]++ = i2f;
1053 }
1054 break;
1055 case FF_DWT97_INT:
1056 for (i = 0; i < csize; i++) {
1057 i0 = *src[0] + (((i_ict_params[0] * *src[2]) + (1 << 15)) >> 16);
1058 i1 = *src[0] - (((i_ict_params[1] * *src[1]) + (1 << 15)) >> 16)
1059 - (((i_ict_params[2] * *src[2]) + (1 << 15)) >> 16);
1060 i2 = *src[0] + (((i_ict_params[3] * *src[1]) + (1 << 15)) >> 16);
1061 *src[0]++ = i0;
1062 *src[1]++ = i1;
1063 *src[2]++ = i2;
1064 }
1065 break;
1066 case FF_DWT53:
1067 for (i = 0; i < csize; i++) {
1068 i1 = *src[0] - (*src[2] + *src[1] >> 2);
1069 i0 = i1 + *src[2];
1070 i2 = i1 + *src[1];
1071 *src[0]++ = i0;
1072 *src[1]++ = i1;
1073 *src[2]++ = i2;
1074 }
1075 break;
1076 }
c81a7063
NB
1077}
1078
1079static int jpeg2000_decode_tile(Jpeg2000DecoderContext *s, Jpeg2000Tile *tile,
1080 AVFrame *picture)
1081{
1082 int compno, reslevelno, bandno;
1083 int x, y;
1084
1085 uint8_t *line;
1086 Jpeg2000T1Context t1;
1087 /* Loop on tile components */
1088
1089 for (compno = 0; compno < s->ncomponents; compno++) {
1090 Jpeg2000Component *comp = tile->comp + compno;
1091 Jpeg2000CodingStyle *codsty = tile->codsty + compno;
1092 /* Loop on resolution levels */
1093 for (reslevelno = 0; reslevelno < codsty->nreslevels2decode; reslevelno++) {
1094 Jpeg2000ResLevel *rlevel = comp->reslevel + reslevelno;
1095 /* Loop on bands */
1096 for (bandno = 0; bandno < rlevel->nbands; bandno++) {
1097 uint16_t nb_precincts, precno;
1098 Jpeg2000Band *band = rlevel->band + bandno;
1099 int cblkno = 0, bandpos;
1100 bandpos = bandno + (reslevelno > 0);
1101
1102 nb_precincts = rlevel->num_precincts_x * rlevel->num_precincts_y;
1103 /* Loop on precincts */
1104 for (precno = 0; precno < nb_precincts; precno++) {
1105 Jpeg2000Prec *prec = band->prec + precno;
1106
1107 /* Loop on codeblocks */
1108 for (cblkno = 0; cblkno < prec->nb_codeblocks_width * prec->nb_codeblocks_height; cblkno++) {
1109 int x, y;
1110 Jpeg2000Cblk *cblk = prec->cblk + cblkno;
1111 decode_cblk(s, codsty, &t1, cblk,
1112 cblk->coord[0][1] - cblk->coord[0][0],
1113 cblk->coord[1][1] - cblk->coord[1][0],
1114 bandpos);
1115
c81a7063
NB
1116 x = cblk->coord[0][0];
1117 y = cblk->coord[1][0];
c81a7063 1118
a458b91c 1119 if (codsty->transform == FF_DWT97)
c81a7063 1120 dequantization_float(x, y, cblk, comp, &t1, band);
a458b91c
MN
1121 else
1122 dequantization_int(x, y, cblk, comp, &t1, band);
c81a7063
NB
1123 } /* end cblk */
1124 } /*end prec */
1125 } /* end band */
1126 } /* end reslevel */
1127
1128 /* inverse DWT */
5bf208f6 1129 ff_dwt_decode(&comp->dwt, codsty->transform == FF_DWT97 ? (void*)comp->f_data : (void*)comp->i_data);
c81a7063
NB
1130 } /*end comp */
1131
1132 /* inverse MCT transformation */
1133 if (tile->codsty[0].mct)
1134 mct_decode(s, tile);
1135
c81a7063
NB
1136 if (s->precision <= 8) {
1137 for (compno = 0; compno < s->ncomponents; compno++) {
1138 Jpeg2000Component *comp = tile->comp + compno;
5bf208f6
MN
1139 float *datap = comp->f_data;
1140 int32_t *i_datap = comp->i_data;
c81a7063
NB
1141 y = tile->comp[compno].coord[1][0] - s->image_offset_y;
1142 line = picture->data[0] + y * picture->linesize[0];
1143 for (; y < tile->comp[compno].coord[1][1] - s->image_offset_y; y += s->cdy[compno]) {
1144 uint8_t *dst;
1145
1146 x = tile->comp[compno].coord[0][0] - s->image_offset_x;
1147 dst = line + x * s->ncomponents + compno;
1148
1149 for (; x < tile->comp[compno].coord[0][1] - s->image_offset_x; x += s->cdx[compno]) {
a458b91c
MN
1150 int val;
1151 /* DC level shift and clip see ISO 15444-1:2002 G.1.2 */
1152 if (tile->codsty->transform == FF_DWT97)
1153 val = lrintf(*datap) + (1 << (s->cbps[compno] - 1));
1154 else
1155 val = *i_datap + (1 << (s->cbps[compno] - 1));
1156 val = av_clip(val, 0, (1 << s->cbps[compno]) - 1);
1157 *dst = val << (8 - s->cbps[compno]);
1158 datap++;
1159 i_datap++;
c81a7063
NB
1160 dst += s->ncomponents;
1161 }
1162 line += picture->linesize[0];
1163 }
1164 }
1165 } else {
1166 for (compno = 0; compno < s->ncomponents; compno++) {
1167 Jpeg2000Component *comp = tile->comp + compno;
5bf208f6
MN
1168 float *datap = comp->f_data;
1169 int32_t *i_datap = comp->i_data;
c81a7063
NB
1170 uint16_t *linel;
1171
1172 y = tile->comp[compno].coord[1][0] - s->image_offset_y;
1173 linel = (uint16_t *)picture->data[0] + y * (picture->linesize[0] >> 1);
1174 for (; y < tile->comp[compno].coord[1][1] - s->image_offset_y; y += s->cdy[compno]) {
1175 uint16_t *dst;
1176 x = tile->comp[compno].coord[0][0] - s->image_offset_x;
1177 dst = linel + (x * s->ncomponents + compno);
1178 for (; x < s->avctx->width; x += s->cdx[compno]) {
a458b91c 1179 int val;
c81a7063 1180 /* DC level shift and clip see ISO 15444-1:2002 G.1.2 */
a458b91c 1181 if (tile->codsty->transform == FF_DWT97)
c81a7063 1182 val = lrintf(*datap) + (1 << (s->cbps[compno] - 1));
a458b91c
MN
1183 else
1184 val = *i_datap + (1 << (s->cbps[compno] - 1));
c81a7063
NB
1185 val = av_clip(val, 0, (1 << s->cbps[compno]) - 1);
1186 /* align 12 bit values in little-endian mode */
a458b91c 1187 *dst = val << (16 - s->cbps[compno]);
c81a7063
NB
1188 datap++;
1189 i_datap++;
1190 dst += s->ncomponents;
1191 }
1192 linel += picture->linesize[0] >> 1;
1193 }
1194 }
1195 }
1196 return 0;
1197}
1198
1199static void jpeg2000_dec_cleanup(Jpeg2000DecoderContext *s)
1200{
1201 int tileno, compno;
1202 for (tileno = 0; tileno < s->numXtiles * s->numYtiles; tileno++) {
1203 for (compno = 0; compno < s->ncomponents; compno++) {
1204 Jpeg2000Component *comp = s->tile[tileno].comp + compno;
1205 Jpeg2000CodingStyle *codsty = s->tile[tileno].codsty + compno;
1206
1207 ff_jpeg2000_cleanup(comp, codsty);
1208 }
1209 av_freep(&s->tile[tileno].comp);
1210 }
1211 av_freep(&s->tile);
1212}
1213
1214static int jpeg2000_read_main_headers(Jpeg2000DecoderContext *s)
1215{
1216 Jpeg2000CodingStyle *codsty = s->codsty;
1217 Jpeg2000QuantStyle *qntsty = s->qntsty;
1218 uint8_t *properties = s->properties;
1219
1220 for (;;) {
1221 int len, ret = 0;
1222 uint16_t marker;
1a3598aa 1223 int oldpos;
c81a7063 1224
1a3598aa 1225 if (bytestream2_get_bytes_left(&s->g) < 2) {
c81a7063
NB
1226 av_log(s->avctx, AV_LOG_ERROR, "Missing EOC\n");
1227 break;
1228 }
1229
1a3598aa
MN
1230 marker = bytestream2_get_be16u(&s->g);
1231 oldpos = bytestream2_tell(&s->g);
c81a7063 1232
b564784a
MN
1233 if (marker == JPEG2000_SOD) {
1234 Jpeg2000Tile *tile;
1235 Jpeg2000TilePart *tp;
1236
1237 if (s->curtileno < 0) {
1238 av_log(s->avctx, AV_LOG_ERROR, "Missing SOT\n");
1239 return AVERROR_INVALIDDATA;
1240 }
1241
1242 tile = s->tile + s->curtileno;
1243 tp = tile->tile_part + tile->tp_idx;
1244 bytestream2_init(&tp->tpg, s->g.buffer, tp->tp_end - s->g.buffer);
1245 bytestream2_skip(&s->g, tp->tp_end - s->g.buffer);
1246
1247 continue;
1248 }
c81a7063
NB
1249 if (marker == JPEG2000_EOC)
1250 break;
1251
1a3598aa 1252 len = bytestream2_get_be16u(&s->g);
fd54dd02
MN
1253 if (len < 2 || bytestream2_get_bytes_left(&s->g) < len - 2)
1254 return AVERROR_INVALIDDATA;
1255
c81a7063
NB
1256 switch (marker) {
1257 case JPEG2000_SIZ:
1258 ret = get_siz(s);
1259 break;
1260 case JPEG2000_COC:
1261 ret = get_coc(s, codsty, properties);
1262 break;
1263 case JPEG2000_COD:
1264 ret = get_cod(s, codsty, properties);
1265 break;
1266 case JPEG2000_QCC:
1267 ret = get_qcc(s, len, qntsty, properties);
1268 break;
1269 case JPEG2000_QCD:
1270 ret = get_qcd(s, len, qntsty, properties);
1271 break;
1272 case JPEG2000_SOT:
1273 ret = get_sot(s, len);
1274 break;
1275 case JPEG2000_COM:
1276 // the comment is ignored
1a3598aa 1277 bytestream2_skip(&s->g, len - 2);
c81a7063
NB
1278 break;
1279 case JPEG2000_TLM:
1280 // Tile-part lengths
1281 ret = get_tlm(s, len);
1282 break;
1283 default:
1284 av_log(s->avctx, AV_LOG_ERROR,
1a3598aa
MN
1285 "unsupported marker 0x%.4X at pos 0x%X\n",
1286 marker, bytestream2_tell(&s->g) - 4);
1287 bytestream2_skip(&s->g, len - 2);
c81a7063
NB
1288 break;
1289 }
1a3598aa 1290 if (((bytestream2_tell(&s->g) - oldpos != len) && (marker != JPEG2000_SOT)) || ret) {
c81a7063
NB
1291 av_log(s->avctx, AV_LOG_ERROR,
1292 "error during processing marker segment %.4x\n", marker);
1293 return ret ? ret : -1;
1294 }
1295 }
1296 return 0;
1297}
1298
1299/* Read bit stream packets --> T2 operation. */
1300static int jpeg2000_read_bitstream_packets(Jpeg2000DecoderContext *s)
1301{
1302 int ret = 0;
1303 Jpeg2000Tile *tile = s->tile + s->curtileno;
1304
1305 if (ret = init_tile(s, s->curtileno))
1306 return ret;
1307 if (ret = jpeg2000_decode_packets(s, tile))
1308 return ret;
1309
1310 return 0;
1311}
1312
1313static int jp2_find_codestream(Jpeg2000DecoderContext *s)
1314{
1a3598aa 1315 uint32_t atom_size, atom;
c81a7063
NB
1316 int found_codestream = 0, search_range = 10;
1317
1a3598aa
MN
1318 while(!found_codestream && search_range
1319 &&
1320 bytestream2_get_bytes_left(&s->g) >= 8) {
1321 atom_size = bytestream2_get_be32u(&s->g);
1322 atom = bytestream2_get_be32u(&s->g);
1323 if (atom == JP2_CODESTREAM) {
c81a7063 1324 found_codestream = 1;
c81a7063 1325 } else {
1a3598aa
MN
1326 if (bytestream2_get_bytes_left(&s->g) < atom_size - 8)
1327 return 0;
1328 bytestream2_skipu(&s->g, atom_size - 8);
c81a7063
NB
1329 search_range--;
1330 }
1331 }
1332
1333 if (found_codestream)
1334 return 1;
1335 return 0;
1336}
1337
1338static int jpeg2000_decode_frame(AVCodecContext *avctx, void *data,
1339 int *got_frame, AVPacket *avpkt)
1340{
1341 Jpeg2000DecoderContext *s = avctx->priv_data;
2e2d2466 1342 ThreadFrame frame = { .f = data };
c81a7063
NB
1343 AVFrame *picture = data;
1344 int tileno, ret;
1345
1346 s->avctx = avctx;
1a3598aa 1347 bytestream2_init(&s->g, avpkt->data, avpkt->size);
c81a7063
NB
1348 s->curtileno = 0; // TODO: only one tile in DCI JP2K. to implement for more tiles
1349
1a3598aa 1350 if (bytestream2_get_bytes_left(&s->g) < 2)
5efadcb8 1351 return AVERROR_INVALIDDATA;
c81a7063
NB
1352
1353 // check if the image is in jp2 format
1a3598aa
MN
1354 if (bytestream2_get_bytes_left(&s->g) >= 12 &&
1355 (bytestream2_get_be32u(&s->g) == 12) &&
1356 (bytestream2_get_be32u(&s->g) == JP2_SIG_TYPE) &&
1357 (bytestream2_get_be32u(&s->g) == JP2_SIG_VALUE)) {
c81a7063
NB
1358 if (!jp2_find_codestream(s)) {
1359 av_log(avctx, AV_LOG_ERROR,
5efadcb8
LB
1360 "Could not find Jpeg2000 codestream atom.\n");
1361 return AVERROR_INVALIDDATA;
c81a7063 1362 }
1a3598aa
MN
1363 } else {
1364 bytestream2_seek(&s->g, 0, SEEK_SET);
1365 if (bytestream2_peek_be16(&s->g) != JPEG2000_SOC)
1366 bytestream2_skip(&s->g, 8);
c81a7063
NB
1367 }
1368
1a3598aa 1369 if (bytestream2_get_be16u(&s->g) != JPEG2000_SOC) {
c81a7063 1370 av_log(avctx, AV_LOG_ERROR, "SOC marker not present\n");
5efadcb8 1371 return AVERROR_INVALIDDATA;
c81a7063
NB
1372 }
1373 if (ret = jpeg2000_read_main_headers(s))
45a1694f 1374 goto end;
c81a7063
NB
1375
1376 /* get picture buffer */
2e2d2466
NB
1377 if ((ret = ff_thread_get_buffer(avctx, &frame, 0)) < 0) {
1378 av_log(avctx, AV_LOG_ERROR, "ff_thread_get_buffer() failed.\n");
45a1694f 1379 goto end;
c81a7063
NB
1380 }
1381 picture->pict_type = AV_PICTURE_TYPE_I;
1382 picture->key_frame = 1;
1383
1384 if (ret = jpeg2000_read_bitstream_packets(s))
45a1694f 1385 goto end;
c81a7063
NB
1386 for (tileno = 0; tileno < s->numXtiles * s->numYtiles; tileno++)
1387 if (ret = jpeg2000_decode_tile(s, s->tile + tileno, picture))
45a1694f 1388 goto end;
c81a7063
NB
1389
1390 *got_frame = 1;
1391
1a3598aa
MN
1392 return bytestream2_tell(&s->g);
1393
45a1694f
JG
1394end:
1395 jpeg2000_dec_cleanup(s);
1a3598aa 1396 return ret;
c81a7063
NB
1397}
1398
70f96615
JG
1399static void jpeg2000_init_static_data(AVCodec *codec)
1400{
1401 ff_jpeg2000_init_tier1_luts();
1402}
1403
c81a7063
NB
1404#define OFFSET(x) offsetof(Jpeg2000DecoderContext, x)
1405#define VD AV_OPT_FLAG_VIDEO_PARAM | AV_OPT_FLAG_DECODING_PARAM
1406
1407static const AVOption options[] = {
1408 { "lowres", "Lower the decoding resolution by a power of two",
f9581f14 1409 OFFSET(reduction_factor), AV_OPT_TYPE_INT, { .i64 = 0 }, 0, JPEG2000_MAX_RESLEVELS - 1, VD },
c81a7063
NB
1410 { NULL },
1411};
1412
1413static const AVProfile profiles[] = {
1414 { FF_PROFILE_JPEG2000_CSTREAM_RESTRICTION_0, "JPEG 2000 codestream restriction 0" },
1415 { FF_PROFILE_JPEG2000_CSTREAM_RESTRICTION_1, "JPEG 2000 codestream restriction 1" },
1416 { FF_PROFILE_JPEG2000_CSTREAM_NO_RESTRICTION, "JPEG 2000 no codestream restrictions" },
1417 { FF_PROFILE_JPEG2000_DCINEMA_2K, "JPEG 2000 digital cinema 2K" },
1418 { FF_PROFILE_JPEG2000_DCINEMA_4K, "JPEG 2000 digital cinema 4K" },
1419 { FF_PROFILE_UNKNOWN },
1420};
1421
1422static const AVClass class = {
1423 .class_name = "jpeg2000",
1424 .item_name = av_default_item_name,
1425 .option = options,
1426 .version = LIBAVUTIL_VERSION_INT,
1427};
1428
1429AVCodec ff_jpeg2000_decoder = {
70f96615
JG
1430 .name = "jpeg2000",
1431 .long_name = NULL_IF_CONFIG_SMALL("JPEG 2000"),
1432 .type = AVMEDIA_TYPE_VIDEO,
1433 .id = AV_CODEC_ID_JPEG2000,
1434 .capabilities = CODEC_CAP_FRAME_THREADS,
1435 .priv_data_size = sizeof(Jpeg2000DecoderContext),
1436 .init_static_data = jpeg2000_init_static_data,
1437 .decode = jpeg2000_decode_frame,
1438 .priv_class = &class,
70f96615 1439 .profiles = NULL_IF_CONFIG_SMALL(profiles)
c81a7063 1440};