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jpeg2000dec.c
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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 FFmpeg.
7  *
8  * FFmpeg 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  * FFmpeg 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 FFmpeg; 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 <inttypes.h>
29 
30 #include "libavutil/attributes.h"
31 #include "libavutil/avassert.h"
32 #include "libavutil/common.h"
33 #include "libavutil/imgutils.h"
34 #include "libavutil/opt.h"
35 #include "libavutil/pixdesc.h"
36 #include "avcodec.h"
37 #include "bytestream.h"
38 #include "internal.h"
39 #include "thread.h"
40 #include "jpeg2000.h"
41 #include "jpeg2000dsp.h"
42 #include "profiles.h"
43 
44 #define JP2_SIG_TYPE 0x6A502020
45 #define JP2_SIG_VALUE 0x0D0A870A
46 #define JP2_CODESTREAM 0x6A703263
47 #define JP2_HEADER 0x6A703268
48 
49 #define HAD_COC 0x01
50 #define HAD_QCC 0x02
51 
52 #define MAX_POCS 32
53 
54 typedef struct Jpeg2000POCEntry {
55  uint16_t LYEpoc;
56  uint16_t CSpoc;
57  uint16_t CEpoc;
58  uint8_t RSpoc;
59  uint8_t REpoc;
60  uint8_t Ppoc;
61 } Jpeg2000POCEntry;
62 
63 typedef struct Jpeg2000POC {
64  Jpeg2000POCEntry poc[MAX_POCS];
65  int nb_poc;
66  int is_default;
67 } Jpeg2000POC;
68 
69 typedef struct Jpeg2000TilePart {
70  uint8_t tile_index; // Tile index who refers the tile-part
71  const uint8_t *tp_end;
72  GetByteContext tpg; // bit stream in tile-part
73 } Jpeg2000TilePart;
74 
75 /* RMK: For JPEG2000 DCINEMA 3 tile-parts in a tile
76  * one per component, so tile_part elements have a size of 3 */
77 typedef struct Jpeg2000Tile {
78  Jpeg2000Component *comp;
79  uint8_t properties[4];
80  Jpeg2000CodingStyle codsty[4];
81  Jpeg2000QuantStyle qntsty[4];
82  Jpeg2000POC poc;
83  Jpeg2000TilePart tile_part[256];
84  uint16_t tp_idx; // Tile-part index
85  int coord[2][2]; // border coordinates {{x0, x1}, {y0, y1}}
86 } Jpeg2000Tile;
87 
88 typedef struct Jpeg2000DecoderContext {
89  AVClass *class;
90  AVCodecContext *avctx;
91  GetByteContext g;
92 
93  int width, height;
94  int image_offset_x, image_offset_y;
95  int tile_offset_x, tile_offset_y;
96  uint8_t cbps[4]; // bits per sample in particular components
97  uint8_t sgnd[4]; // if a component is signed
98  uint8_t properties[4];
99  int cdx[4], cdy[4];
100  int precision;
101  int ncomponents;
102  int colour_space;
103  uint32_t palette[256];
104  int8_t pal8;
105  int cdef[4];
106  int tile_width, tile_height;
107  unsigned numXtiles, numYtiles;
108  int maxtilelen;
109 
110  Jpeg2000CodingStyle codsty[4];
111  Jpeg2000QuantStyle qntsty[4];
112  Jpeg2000POC poc;
113 
114  int bit_index;
115 
116  int curtileno;
117 
118  Jpeg2000Tile *tile;
119  Jpeg2000DSPContext dsp;
120 
121  /*options parameters*/
122  int reduction_factor;
123 } Jpeg2000DecoderContext;
124 
125 /* get_bits functions for JPEG2000 packet bitstream
126  * It is a get_bit function with a bit-stuffing routine. If the value of the
127  * byte is 0xFF, the next byte includes an extra zero bit stuffed into the MSB.
128  * cf. ISO-15444-1:2002 / B.10.1 Bit-stuffing routine */
129 static int get_bits(Jpeg2000DecoderContext *s, int n)
130 {
131  int res = 0;
132 
133  while (--n >= 0) {
134  res <<= 1;
135  if (s->bit_index == 0) {
136  s->bit_index = 7 + (bytestream2_get_byte(&s->g) != 0xFFu);
137  }
138  s->bit_index--;
139  res |= (bytestream2_peek_byte(&s->g) >> s->bit_index) & 1;
140  }
141  return res;
142 }
143 
144 static void jpeg2000_flush(Jpeg2000DecoderContext *s)
145 {
146  if (bytestream2_get_byte(&s->g) == 0xff)
147  bytestream2_skip(&s->g, 1);
148  s->bit_index = 8;
149 }
150 
151 /* decode the value stored in node */
152 static int tag_tree_decode(Jpeg2000DecoderContext *s, Jpeg2000TgtNode *node,
153  int threshold)
154 {
155  Jpeg2000TgtNode *stack[30];
156  int sp = -1, curval = 0;
157 
158  if (!node) {
159  av_log(s->avctx, AV_LOG_ERROR, "missing node\n");
160  return AVERROR_INVALIDDATA;
161  }
162 
163  while (node && !node->vis) {
164  stack[++sp] = node;
165  node = node->parent;
166  }
167 
168  if (node)
169  curval = node->val;
170  else
171  curval = stack[sp]->val;
172 
173  while (curval < threshold && sp >= 0) {
174  if (curval < stack[sp]->val)
175  curval = stack[sp]->val;
176  while (curval < threshold) {
177  int ret;
178  if ((ret = get_bits(s, 1)) > 0) {
179  stack[sp]->vis++;
180  break;
181  } else if (!ret)
182  curval++;
183  else
184  return ret;
185  }
186  stack[sp]->val = curval;
187  sp--;
188  }
189  return curval;
190 }
191 
192 static int pix_fmt_match(enum AVPixelFormat pix_fmt, int components,
193  int bpc, uint32_t log2_chroma_wh, int pal8)
194 {
195  int match = 1;
196  const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(pix_fmt);
197 
198  av_assert2(desc);
199 
200  if (desc->nb_components != components) {
201  return 0;
202  }
203 
204  switch (components) {
205  case 4:
206  match = match && desc->comp[3].depth >= bpc &&
207  (log2_chroma_wh >> 14 & 3) == 0 &&
208  (log2_chroma_wh >> 12 & 3) == 0;
209  case 3:
210  match = match && desc->comp[2].depth >= bpc &&
211  (log2_chroma_wh >> 10 & 3) == desc->log2_chroma_w &&
212  (log2_chroma_wh >> 8 & 3) == desc->log2_chroma_h;
213  case 2:
214  match = match && desc->comp[1].depth >= bpc &&
215  (log2_chroma_wh >> 6 & 3) == desc->log2_chroma_w &&
216  (log2_chroma_wh >> 4 & 3) == desc->log2_chroma_h;
217 
218  case 1:
219  match = match && desc->comp[0].depth >= bpc &&
220  (log2_chroma_wh >> 2 & 3) == 0 &&
221  (log2_chroma_wh & 3) == 0 &&
222  (desc->flags & AV_PIX_FMT_FLAG_PAL) == pal8 * AV_PIX_FMT_FLAG_PAL;
223  }
224  return match;
225 }
226 
227 // pix_fmts with lower bpp have to be listed before
228 // similar pix_fmts with higher bpp.
229 #define RGB_PIXEL_FORMATS AV_PIX_FMT_PAL8,AV_PIX_FMT_RGB24,AV_PIX_FMT_RGBA,AV_PIX_FMT_RGB48,AV_PIX_FMT_RGBA64
230 #define GRAY_PIXEL_FORMATS AV_PIX_FMT_GRAY8,AV_PIX_FMT_GRAY8A,AV_PIX_FMT_GRAY16,AV_PIX_FMT_YA16
231 #define YUV_PIXEL_FORMATS AV_PIX_FMT_YUV410P,AV_PIX_FMT_YUV411P,AV_PIX_FMT_YUVA420P, \
232  AV_PIX_FMT_YUV420P,AV_PIX_FMT_YUV422P,AV_PIX_FMT_YUVA422P, \
233  AV_PIX_FMT_YUV440P,AV_PIX_FMT_YUV444P,AV_PIX_FMT_YUVA444P, \
234  AV_PIX_FMT_YUV420P9,AV_PIX_FMT_YUV422P9,AV_PIX_FMT_YUV444P9, \
235  AV_PIX_FMT_YUVA420P9,AV_PIX_FMT_YUVA422P9,AV_PIX_FMT_YUVA444P9, \
236  AV_PIX_FMT_YUV420P10,AV_PIX_FMT_YUV422P10,AV_PIX_FMT_YUV444P10, \
237  AV_PIX_FMT_YUVA420P10,AV_PIX_FMT_YUVA422P10,AV_PIX_FMT_YUVA444P10, \
238  AV_PIX_FMT_YUV420P12,AV_PIX_FMT_YUV422P12,AV_PIX_FMT_YUV444P12, \
239  AV_PIX_FMT_YUV420P14,AV_PIX_FMT_YUV422P14,AV_PIX_FMT_YUV444P14, \
240  AV_PIX_FMT_YUV420P16,AV_PIX_FMT_YUV422P16,AV_PIX_FMT_YUV444P16, \
241  AV_PIX_FMT_YUVA420P16,AV_PIX_FMT_YUVA422P16,AV_PIX_FMT_YUVA444P16
242 #define XYZ_PIXEL_FORMATS AV_PIX_FMT_XYZ12
243 
244 static const enum AVPixelFormat rgb_pix_fmts[] = {RGB_PIXEL_FORMATS};
245 static const enum AVPixelFormat gray_pix_fmts[] = {GRAY_PIXEL_FORMATS};
246 static const enum AVPixelFormat yuv_pix_fmts[] = {YUV_PIXEL_FORMATS};
247 static const enum AVPixelFormat xyz_pix_fmts[] = {XYZ_PIXEL_FORMATS,
248  YUV_PIXEL_FORMATS};
249 static const enum AVPixelFormat all_pix_fmts[] = {RGB_PIXEL_FORMATS,
250  GRAY_PIXEL_FORMATS,
251  YUV_PIXEL_FORMATS,
252  XYZ_PIXEL_FORMATS};
253 
254 /* marker segments */
255 /* get sizes and offsets of image, tiles; number of components */
256 static int get_siz(Jpeg2000DecoderContext *s)
257 {
258  int i;
259  int ncomponents;
260  uint32_t log2_chroma_wh = 0;
261  const enum AVPixelFormat *possible_fmts = NULL;
262  int possible_fmts_nb = 0;
263 
264  if (bytestream2_get_bytes_left(&s->g) < 36) {
265  av_log(s->avctx, AV_LOG_ERROR, "Insufficient space for SIZ\n");
266  return AVERROR_INVALIDDATA;
267  }
268 
269  s->avctx->profile = bytestream2_get_be16u(&s->g); // Rsiz
270  s->width = bytestream2_get_be32u(&s->g); // Width
271  s->height = bytestream2_get_be32u(&s->g); // Height
272  s->image_offset_x = bytestream2_get_be32u(&s->g); // X0Siz
273  s->image_offset_y = bytestream2_get_be32u(&s->g); // Y0Siz
274  s->tile_width = bytestream2_get_be32u(&s->g); // XTSiz
275  s->tile_height = bytestream2_get_be32u(&s->g); // YTSiz
276  s->tile_offset_x = bytestream2_get_be32u(&s->g); // XT0Siz
277  s->tile_offset_y = bytestream2_get_be32u(&s->g); // YT0Siz
278  ncomponents = bytestream2_get_be16u(&s->g); // CSiz
279 
280  if (s->image_offset_x || s->image_offset_y) {
281  avpriv_request_sample(s->avctx, "Support for image offsets");
282  return AVERROR_PATCHWELCOME;
283  }
284  if (av_image_check_size(s->width, s->height, 0, s->avctx)) {
285  avpriv_request_sample(s->avctx, "Large Dimensions");
286  return AVERROR_PATCHWELCOME;
287  }
288 
289  if (ncomponents <= 0) {
290  av_log(s->avctx, AV_LOG_ERROR, "Invalid number of components: %d\n",
291  s->ncomponents);
292  return AVERROR_INVALIDDATA;
293  }
294 
295  if (ncomponents > 4) {
296  avpriv_request_sample(s->avctx, "Support for %d components",
297  ncomponents);
298  return AVERROR_PATCHWELCOME;
299  }
300 
301  s->ncomponents = ncomponents;
302 
303  if (s->tile_width <= 0 || s->tile_height <= 0) {
304  av_log(s->avctx, AV_LOG_ERROR, "Invalid tile dimension %dx%d.\n",
305  s->tile_width, s->tile_height);
306  return AVERROR_INVALIDDATA;
307  }
308 
309  if (bytestream2_get_bytes_left(&s->g) < 3 * s->ncomponents) {
310  av_log(s->avctx, AV_LOG_ERROR, "Insufficient space for %d components in SIZ\n", s->ncomponents);
311  return AVERROR_INVALIDDATA;
312  }
313 
314  for (i = 0; i < s->ncomponents; i++) { // Ssiz_i XRsiz_i, YRsiz_i
315  uint8_t x = bytestream2_get_byteu(&s->g);
316  s->cbps[i] = (x & 0x7f) + 1;
317  s->precision = FFMAX(s->cbps[i], s->precision);
318  s->sgnd[i] = !!(x & 0x80);
319  s->cdx[i] = bytestream2_get_byteu(&s->g);
320  s->cdy[i] = bytestream2_get_byteu(&s->g);
321  if ( !s->cdx[i] || s->cdx[i] == 3 || s->cdx[i] > 4
322  || !s->cdy[i] || s->cdy[i] == 3 || s->cdy[i] > 4) {
323  av_log(s->avctx, AV_LOG_ERROR, "Invalid sample separation %d/%d\n", s->cdx[i], s->cdy[i]);
324  return AVERROR_INVALIDDATA;
325  }
326  log2_chroma_wh |= s->cdy[i] >> 1 << i * 4 | s->cdx[i] >> 1 << i * 4 + 2;
327  }
328 
329  s->numXtiles = ff_jpeg2000_ceildiv(s->width - s->tile_offset_x, s->tile_width);
330  s->numYtiles = ff_jpeg2000_ceildiv(s->height - s->tile_offset_y, s->tile_height);
331 
332  if (s->numXtiles * (uint64_t)s->numYtiles > INT_MAX/sizeof(*s->tile)) {
333  s->numXtiles = s->numYtiles = 0;
334  return AVERROR(EINVAL);
335  }
336 
337  s->tile = av_mallocz_array(s->numXtiles * s->numYtiles, sizeof(*s->tile));
338  if (!s->tile) {
339  s->numXtiles = s->numYtiles = 0;
340  return AVERROR(ENOMEM);
341  }
342 
343  for (i = 0; i < s->numXtiles * s->numYtiles; i++) {
344  Jpeg2000Tile *tile = s->tile + i;
345 
346  tile->comp = av_mallocz(s->ncomponents * sizeof(*tile->comp));
347  if (!tile->comp)
348  return AVERROR(ENOMEM);
349  }
350 
351  /* compute image size with reduction factor */
352  s->avctx->width = ff_jpeg2000_ceildivpow2(s->width - s->image_offset_x,
353  s->reduction_factor);
354  s->avctx->height = ff_jpeg2000_ceildivpow2(s->height - s->image_offset_y,
355  s->reduction_factor);
356 
357  if (s->avctx->profile == FF_PROFILE_JPEG2000_DCINEMA_2K ||
358  s->avctx->profile == FF_PROFILE_JPEG2000_DCINEMA_4K) {
359  possible_fmts = xyz_pix_fmts;
360  possible_fmts_nb = FF_ARRAY_ELEMS(xyz_pix_fmts);
361  } else {
362  switch (s->colour_space) {
363  case 16:
364  possible_fmts = rgb_pix_fmts;
365  possible_fmts_nb = FF_ARRAY_ELEMS(rgb_pix_fmts);
366  break;
367  case 17:
368  possible_fmts = gray_pix_fmts;
369  possible_fmts_nb = FF_ARRAY_ELEMS(gray_pix_fmts);
370  break;
371  case 18:
372  possible_fmts = yuv_pix_fmts;
373  possible_fmts_nb = FF_ARRAY_ELEMS(yuv_pix_fmts);
374  break;
375  default:
376  possible_fmts = all_pix_fmts;
377  possible_fmts_nb = FF_ARRAY_ELEMS(all_pix_fmts);
378  break;
379  }
380  }
381  for (i = 0; i < possible_fmts_nb; ++i) {
382  if (pix_fmt_match(possible_fmts[i], ncomponents, s->precision, log2_chroma_wh, s->pal8)) {
383  s->avctx->pix_fmt = possible_fmts[i];
384  break;
385  }
386  }
387 
388  if (i == possible_fmts_nb) {
389  if (ncomponents == 4 &&
390  s->cdy[0] == 1 && s->cdx[0] == 1 &&
391  s->cdy[1] == 1 && s->cdx[1] == 1 &&
392  s->cdy[2] == s->cdy[3] && s->cdx[2] == s->cdx[3]) {
393  if (s->precision == 8 && s->cdy[2] == 2 && s->cdx[2] == 2 && !s->pal8) {
394  s->avctx->pix_fmt = AV_PIX_FMT_YUVA420P;
395  s->cdef[0] = 0;
396  s->cdef[1] = 1;
397  s->cdef[2] = 2;
398  s->cdef[3] = 3;
399  i = 0;
400  }
401  }
402  }
403 
404 
405  if (i == possible_fmts_nb) {
406  av_log(s->avctx, AV_LOG_ERROR,
407  "Unknown pix_fmt, profile: %d, colour_space: %d, "
408  "components: %d, precision: %d\n"
409  "cdx[0]: %d, cdy[0]: %d\n"
410  "cdx[1]: %d, cdy[1]: %d\n"
411  "cdx[2]: %d, cdy[2]: %d\n"
412  "cdx[3]: %d, cdy[3]: %d\n",
413  s->avctx->profile, s->colour_space, ncomponents, s->precision,
414  s->cdx[0],
415  s->cdy[0],
416  ncomponents > 1 ? s->cdx[1] : 0,
417  ncomponents > 1 ? s->cdy[1] : 0,
418  ncomponents > 2 ? s->cdx[2] : 0,
419  ncomponents > 2 ? s->cdy[2] : 0,
420  ncomponents > 3 ? s->cdx[3] : 0,
421  ncomponents > 3 ? s->cdy[3] : 0);
422  return AVERROR_PATCHWELCOME;
423  }
424  s->avctx->bits_per_raw_sample = s->precision;
425  return 0;
426 }
427 
428 /* get common part for COD and COC segments */
429 static int get_cox(Jpeg2000DecoderContext *s, Jpeg2000CodingStyle *c)
430 {
431  uint8_t byte;
432 
433  if (bytestream2_get_bytes_left(&s->g) < 5) {
434  av_log(s->avctx, AV_LOG_ERROR, "Insufficient space for COX\n");
435  return AVERROR_INVALIDDATA;
436  }
437 
438  /* nreslevels = number of resolution levels
439  = number of decomposition level +1 */
440  c->nreslevels = bytestream2_get_byteu(&s->g) + 1;
441  if (c->nreslevels >= JPEG2000_MAX_RESLEVELS) {
442  av_log(s->avctx, AV_LOG_ERROR, "nreslevels %d is invalid\n", c->nreslevels);
443  return AVERROR_INVALIDDATA;
444  }
445 
446  if (c->nreslevels <= s->reduction_factor) {
447  /* we are forced to update reduction_factor as its requested value is
448  not compatible with this bitstream, and as we might have used it
449  already in setup earlier we have to fail this frame until
450  reinitialization is implemented */
451  av_log(s->avctx, AV_LOG_ERROR, "reduction_factor too large for this bitstream, max is %d\n", c->nreslevels - 1);
452  s->reduction_factor = c->nreslevels - 1;
453  return AVERROR(EINVAL);
454  }
455 
456  /* compute number of resolution levels to decode */
457  c->nreslevels2decode = c->nreslevels - s->reduction_factor;
458 
459  c->log2_cblk_width = (bytestream2_get_byteu(&s->g) & 15) + 2; // cblk width
460  c->log2_cblk_height = (bytestream2_get_byteu(&s->g) & 15) + 2; // cblk height
461 
462  if (c->log2_cblk_width > 10 || c->log2_cblk_height > 10 ||
463  c->log2_cblk_width + c->log2_cblk_height > 12) {
464  av_log(s->avctx, AV_LOG_ERROR, "cblk size invalid\n");
465  return AVERROR_INVALIDDATA;
466  }
467 
468  c->cblk_style = bytestream2_get_byteu(&s->g);
469  if (c->cblk_style != 0) { // cblk style
470  av_log(s->avctx, AV_LOG_WARNING, "extra cblk styles %X\n", c->cblk_style);
471  if (c->cblk_style & JPEG2000_CBLK_BYPASS)
472  av_log(s->avctx, AV_LOG_WARNING, "Selective arithmetic coding bypass\n");
473  }
474  c->transform = bytestream2_get_byteu(&s->g); // DWT transformation type
475  /* set integer 9/7 DWT in case of BITEXACT flag */
476  if ((s->avctx->flags & AV_CODEC_FLAG_BITEXACT) && (c->transform == FF_DWT97))
477  c->transform = FF_DWT97_INT;
478  else if (c->transform == FF_DWT53) {
479  s->avctx->properties |= FF_CODEC_PROPERTY_LOSSLESS;
480  }
481 
482  if (c->csty & JPEG2000_CSTY_PREC) {
483  int i;
484  for (i = 0; i < c->nreslevels; i++) {
485  byte = bytestream2_get_byte(&s->g);
486  c->log2_prec_widths[i] = byte & 0x0F; // precinct PPx
487  c->log2_prec_heights[i] = (byte >> 4) & 0x0F; // precinct PPy
488  if (i)
489  if (c->log2_prec_widths[i] == 0 || c->log2_prec_heights[i] == 0) {
490  av_log(s->avctx, AV_LOG_ERROR, "PPx %d PPy %d invalid\n",
491  c->log2_prec_widths[i], c->log2_prec_heights[i]);
492  c->log2_prec_widths[i] = c->log2_prec_heights[i] = 1;
493  return AVERROR_INVALIDDATA;
494  }
495  }
496  } else {
497  memset(c->log2_prec_widths , 15, sizeof(c->log2_prec_widths ));
498  memset(c->log2_prec_heights, 15, sizeof(c->log2_prec_heights));
499  }
500  return 0;
501 }
502 
503 /* get coding parameters for a particular tile or whole image*/
504 static int get_cod(Jpeg2000DecoderContext *s, Jpeg2000CodingStyle *c,
505  uint8_t *properties)
506 {
507  Jpeg2000CodingStyle tmp;
508  int compno, ret;
509 
510  if (bytestream2_get_bytes_left(&s->g) < 5) {
511  av_log(s->avctx, AV_LOG_ERROR, "Insufficient space for COD\n");
512  return AVERROR_INVALIDDATA;
513  }
514 
515  tmp.csty = bytestream2_get_byteu(&s->g);
516 
517  // get progression order
518  tmp.prog_order = bytestream2_get_byteu(&s->g);
519 
520  tmp.nlayers = bytestream2_get_be16u(&s->g);
521  tmp.mct = bytestream2_get_byteu(&s->g); // multiple component transformation
522 
523  if (tmp.mct && s->ncomponents < 3) {
524  av_log(s->avctx, AV_LOG_ERROR,
525  "MCT %"PRIu8" with too few components (%d)\n",
526  tmp.mct, s->ncomponents);
527  return AVERROR_INVALIDDATA;
528  }
529 
530  if ((ret = get_cox(s, &tmp)) < 0)
531  return ret;
532 
533  for (compno = 0; compno < s->ncomponents; compno++)
534  if (!(properties[compno] & HAD_COC))
535  memcpy(c + compno, &tmp, sizeof(tmp));
536  return 0;
537 }
538 
539 /* Get coding parameters for a component in the whole image or a
540  * particular tile. */
541 static int get_coc(Jpeg2000DecoderContext *s, Jpeg2000CodingStyle *c,
542  uint8_t *properties)
543 {
544  int compno, ret;
545 
546  if (bytestream2_get_bytes_left(&s->g) < 2) {
547  av_log(s->avctx, AV_LOG_ERROR, "Insufficient space for COC\n");
548  return AVERROR_INVALIDDATA;
549  }
550 
551  compno = bytestream2_get_byteu(&s->g);
552 
553  if (compno >= s->ncomponents) {
554  av_log(s->avctx, AV_LOG_ERROR,
555  "Invalid compno %d. There are %d components in the image.\n",
556  compno, s->ncomponents);
557  return AVERROR_INVALIDDATA;
558  }
559 
560  c += compno;
561  c->csty = bytestream2_get_byteu(&s->g);
562 
563  if ((ret = get_cox(s, c)) < 0)
564  return ret;
565 
566  properties[compno] |= HAD_COC;
567  return 0;
568 }
569 
570 /* Get common part for QCD and QCC segments. */
571 static int get_qcx(Jpeg2000DecoderContext *s, int n, Jpeg2000QuantStyle *q)
572 {
573  int i, x;
574 
575  if (bytestream2_get_bytes_left(&s->g) < 1)
576  return AVERROR_INVALIDDATA;
577 
578  x = bytestream2_get_byteu(&s->g); // Sqcd
579 
580  q->nguardbits = x >> 5;
581  q->quantsty = x & 0x1f;
582 
583  if (q->quantsty == JPEG2000_QSTY_NONE) {
584  n -= 3;
585  if (bytestream2_get_bytes_left(&s->g) < n ||
586  n > JPEG2000_MAX_DECLEVELS*3)
587  return AVERROR_INVALIDDATA;
588  for (i = 0; i < n; i++)
589  q->expn[i] = bytestream2_get_byteu(&s->g) >> 3;
590  } else if (q->quantsty == JPEG2000_QSTY_SI) {
591  if (bytestream2_get_bytes_left(&s->g) < 2)
592  return AVERROR_INVALIDDATA;
593  x = bytestream2_get_be16u(&s->g);
594  q->expn[0] = x >> 11;
595  q->mant[0] = x & 0x7ff;
596  for (i = 1; i < JPEG2000_MAX_DECLEVELS * 3; i++) {
597  int curexpn = FFMAX(0, q->expn[0] - (i - 1) / 3);
598  q->expn[i] = curexpn;
599  q->mant[i] = q->mant[0];
600  }
601  } else {
602  n = (n - 3) >> 1;
603  if (bytestream2_get_bytes_left(&s->g) < 2 * n ||
604  n > JPEG2000_MAX_DECLEVELS*3)
605  return AVERROR_INVALIDDATA;
606  for (i = 0; i < n; i++) {
607  x = bytestream2_get_be16u(&s->g);
608  q->expn[i] = x >> 11;
609  q->mant[i] = x & 0x7ff;
610  }
611  }
612  return 0;
613 }
614 
615 /* Get quantization parameters for a particular tile or a whole image. */
616 static int get_qcd(Jpeg2000DecoderContext *s, int n, Jpeg2000QuantStyle *q,
617  uint8_t *properties)
618 {
619  Jpeg2000QuantStyle tmp;
620  int compno, ret;
621 
622  memset(&tmp, 0, sizeof(tmp));
623 
624  if ((ret = get_qcx(s, n, &tmp)) < 0)
625  return ret;
626  for (compno = 0; compno < s->ncomponents; compno++)
627  if (!(properties[compno] & HAD_QCC))
628  memcpy(q + compno, &tmp, sizeof(tmp));
629  return 0;
630 }
631 
632 /* Get quantization parameters for a component in the whole image
633  * on in a particular tile. */
634 static int get_qcc(Jpeg2000DecoderContext *s, int n, Jpeg2000QuantStyle *q,
635  uint8_t *properties)
636 {
637  int compno;
638 
639  if (bytestream2_get_bytes_left(&s->g) < 1)
640  return AVERROR_INVALIDDATA;
641 
642  compno = bytestream2_get_byteu(&s->g);
643 
644  if (compno >= s->ncomponents) {
645  av_log(s->avctx, AV_LOG_ERROR,
646  "Invalid compno %d. There are %d components in the image.\n",
647  compno, s->ncomponents);
648  return AVERROR_INVALIDDATA;
649  }
650 
651  properties[compno] |= HAD_QCC;
652  return get_qcx(s, n - 1, q + compno);
653 }
654 
655 static int get_poc(Jpeg2000DecoderContext *s, int size, Jpeg2000POC *p)
656 {
657  int i;
658  int elem_size = s->ncomponents <= 257 ? 7 : 9;
659  Jpeg2000POC tmp = {{{0}}};
660 
661  if (bytestream2_get_bytes_left(&s->g) < 5 || size < 2 + elem_size) {
662  av_log(s->avctx, AV_LOG_ERROR, "Insufficient space for POC\n");
663  return AVERROR_INVALIDDATA;
664  }
665 
666  if (elem_size > 7) {
667  avpriv_request_sample(s->avctx, "Fat POC not supported");
668  return AVERROR_PATCHWELCOME;
669  }
670 
671  tmp.nb_poc = (size - 2) / elem_size;
672  if (tmp.nb_poc > MAX_POCS) {
673  avpriv_request_sample(s->avctx, "Too many POCs (%d)", tmp.nb_poc);
674  return AVERROR_PATCHWELCOME;
675  }
676 
677  for (i = 0; i<tmp.nb_poc; i++) {
678  Jpeg2000POCEntry *e = &tmp.poc[i];
679  e->RSpoc = bytestream2_get_byteu(&s->g);
680  e->CSpoc = bytestream2_get_byteu(&s->g);
681  e->LYEpoc = bytestream2_get_be16u(&s->g);
682  e->REpoc = bytestream2_get_byteu(&s->g);
683  e->CEpoc = bytestream2_get_byteu(&s->g);
684  e->Ppoc = bytestream2_get_byteu(&s->g);
685  if (!e->CEpoc)
686  e->CEpoc = 256;
687  if (e->CEpoc > s->ncomponents)
688  e->CEpoc = s->ncomponents;
689  if ( e->RSpoc >= e->REpoc || e->REpoc > 33
690  || e->CSpoc >= e->CEpoc || e->CEpoc > s->ncomponents
691  || !e->LYEpoc) {
692  av_log(s->avctx, AV_LOG_ERROR, "POC Entry %d is invalid (%d, %d, %d, %d, %d, %d)\n", i,
693  e->RSpoc, e->CSpoc, e->LYEpoc, e->REpoc, e->CEpoc, e->Ppoc
694  );
695  return AVERROR_INVALIDDATA;
696  }
697  }
698 
699  if (!p->nb_poc || p->is_default) {
700  *p = tmp;
701  } else {
702  if (p->nb_poc + tmp.nb_poc > MAX_POCS) {
703  av_log(s->avctx, AV_LOG_ERROR, "Insufficient space for POC\n");
704  return AVERROR_INVALIDDATA;
705  }
706  memcpy(p->poc + p->nb_poc, tmp.poc, tmp.nb_poc * sizeof(tmp.poc[0]));
707  p->nb_poc += tmp.nb_poc;
708  }
709 
710  p->is_default = 0;
711 
712  return 0;
713 }
714 
715 
716 /* Get start of tile segment. */
717 static int get_sot(Jpeg2000DecoderContext *s, int n)
718 {
719  Jpeg2000TilePart *tp;
720  uint16_t Isot;
721  uint32_t Psot;
722  unsigned TPsot;
723 
724  if (bytestream2_get_bytes_left(&s->g) < 8)
725  return AVERROR_INVALIDDATA;
726 
727  s->curtileno = 0;
728  Isot = bytestream2_get_be16u(&s->g); // Isot
729  if (Isot >= s->numXtiles * s->numYtiles)
730  return AVERROR_INVALIDDATA;
731 
732  s->curtileno = Isot;
733  Psot = bytestream2_get_be32u(&s->g); // Psot
734  TPsot = bytestream2_get_byteu(&s->g); // TPsot
735 
736  /* Read TNSot but not used */
737  bytestream2_get_byteu(&s->g); // TNsot
738 
739  if (!Psot)
740  Psot = bytestream2_get_bytes_left(&s->g) - 2 + n + 2;
741 
742  if (Psot > bytestream2_get_bytes_left(&s->g) - 2 + n + 2) {
743  av_log(s->avctx, AV_LOG_ERROR, "Psot %"PRIu32" too big\n", Psot);
744  return AVERROR_INVALIDDATA;
745  }
746 
747  av_assert0(TPsot < FF_ARRAY_ELEMS(s->tile[Isot].tile_part));
748 
749  s->tile[Isot].tp_idx = TPsot;
750  tp = s->tile[Isot].tile_part + TPsot;
751  tp->tile_index = Isot;
752  tp->tp_end = s->g.buffer + Psot - n - 2;
753 
754  if (!TPsot) {
755  Jpeg2000Tile *tile = s->tile + s->curtileno;
756 
757  /* copy defaults */
758  memcpy(tile->codsty, s->codsty, s->ncomponents * sizeof(Jpeg2000CodingStyle));
759  memcpy(tile->qntsty, s->qntsty, s->ncomponents * sizeof(Jpeg2000QuantStyle));
760  memcpy(&tile->poc , &s->poc , sizeof(tile->poc));
761  tile->poc.is_default = 1;
762  }
763 
764  return 0;
765 }
766 
767 /* Tile-part lengths: see ISO 15444-1:2002, section A.7.1
768  * Used to know the number of tile parts and lengths.
769  * There may be multiple TLMs in the header.
770  * TODO: The function is not used for tile-parts management, nor anywhere else.
771  * It can be useful to allocate memory for tile parts, before managing the SOT
772  * markers. Parsing the TLM header is needed to increment the input header
773  * buffer.
774  * This marker is mandatory for DCI. */
775 static uint8_t get_tlm(Jpeg2000DecoderContext *s, int n)
776 {
777  uint8_t Stlm, ST, SP, tile_tlm, i;
778  bytestream2_get_byte(&s->g); /* Ztlm: skipped */
779  Stlm = bytestream2_get_byte(&s->g);
780 
781  // too complex ? ST = ((Stlm >> 4) & 0x01) + ((Stlm >> 4) & 0x02);
782  ST = (Stlm >> 4) & 0x03;
783  // TODO: Manage case of ST = 0b11 --> raise error
784  SP = (Stlm >> 6) & 0x01;
785  tile_tlm = (n - 4) / ((SP + 1) * 2 + ST);
786  for (i = 0; i < tile_tlm; i++) {
787  switch (ST) {
788  case 0:
789  break;
790  case 1:
791  bytestream2_get_byte(&s->g);
792  break;
793  case 2:
794  bytestream2_get_be16(&s->g);
795  break;
796  case 3:
797  bytestream2_get_be32(&s->g);
798  break;
799  }
800  if (SP == 0) {
801  bytestream2_get_be16(&s->g);
802  } else {
803  bytestream2_get_be32(&s->g);
804  }
805  }
806  return 0;
807 }
808 
809 static uint8_t get_plt(Jpeg2000DecoderContext *s, int n)
810 {
811  int i;
812 
813  av_log(s->avctx, AV_LOG_DEBUG,
814  "PLT marker at pos 0x%X\n", bytestream2_tell(&s->g) - 4);
815 
816  /*Zplt =*/ bytestream2_get_byte(&s->g);
817 
818  for (i = 0; i < n - 3; i++) {
819  bytestream2_get_byte(&s->g);
820  }
821 
822  return 0;
823 }
824 
825 static int init_tile(Jpeg2000DecoderContext *s, int tileno)
826 {
827  int compno;
828  int tilex = tileno % s->numXtiles;
829  int tiley = tileno / s->numXtiles;
830  Jpeg2000Tile *tile = s->tile + tileno;
831 
832  if (!tile->comp)
833  return AVERROR(ENOMEM);
834 
835  tile->coord[0][0] = av_clip(tilex * (int64_t)s->tile_width + s->tile_offset_x, s->image_offset_x, s->width);
836  tile->coord[0][1] = av_clip((tilex + 1) * (int64_t)s->tile_width + s->tile_offset_x, s->image_offset_x, s->width);
837  tile->coord[1][0] = av_clip(tiley * (int64_t)s->tile_height + s->tile_offset_y, s->image_offset_y, s->height);
838  tile->coord[1][1] = av_clip((tiley + 1) * (int64_t)s->tile_height + s->tile_offset_y, s->image_offset_y, s->height);
839 
840  for (compno = 0; compno < s->ncomponents; compno++) {
841  Jpeg2000Component *comp = tile->comp + compno;
842  Jpeg2000CodingStyle *codsty = tile->codsty + compno;
843  Jpeg2000QuantStyle *qntsty = tile->qntsty + compno;
844  int ret; // global bandno
845 
846  comp->coord_o[0][0] = tile->coord[0][0];
847  comp->coord_o[0][1] = tile->coord[0][1];
848  comp->coord_o[1][0] = tile->coord[1][0];
849  comp->coord_o[1][1] = tile->coord[1][1];
850  if (compno) {
851  comp->coord_o[0][0] /= s->cdx[compno];
852  comp->coord_o[0][1] /= s->cdx[compno];
853  comp->coord_o[1][0] /= s->cdy[compno];
854  comp->coord_o[1][1] /= s->cdy[compno];
855  }
856 
857  comp->coord[0][0] = ff_jpeg2000_ceildivpow2(comp->coord_o[0][0], s->reduction_factor);
858  comp->coord[0][1] = ff_jpeg2000_ceildivpow2(comp->coord_o[0][1], s->reduction_factor);
859  comp->coord[1][0] = ff_jpeg2000_ceildivpow2(comp->coord_o[1][0], s->reduction_factor);
860  comp->coord[1][1] = ff_jpeg2000_ceildivpow2(comp->coord_o[1][1], s->reduction_factor);
861 
862  if (ret = ff_jpeg2000_init_component(comp, codsty, qntsty,
863  s->cbps[compno], s->cdx[compno],
864  s->cdy[compno], s->avctx))
865  return ret;
866  }
867  return 0;
868 }
869 
870 /* Read the number of coding passes. */
871 static int getnpasses(Jpeg2000DecoderContext *s)
872 {
873  int num;
874  if (!get_bits(s, 1))
875  return 1;
876  if (!get_bits(s, 1))
877  return 2;
878  if ((num = get_bits(s, 2)) != 3)
879  return num < 0 ? num : 3 + num;
880  if ((num = get_bits(s, 5)) != 31)
881  return num < 0 ? num : 6 + num;
882  num = get_bits(s, 7);
883  return num < 0 ? num : 37 + num;
884 }
885 
886 static int getlblockinc(Jpeg2000DecoderContext *s)
887 {
888  int res = 0, ret;
889  while (ret = get_bits(s, 1)) {
890  if (ret < 0)
891  return ret;
892  res++;
893  }
894  return res;
895 }
896 
897 static int jpeg2000_decode_packet(Jpeg2000DecoderContext *s, Jpeg2000Tile *tile, int *tp_index,
898  Jpeg2000CodingStyle *codsty,
899  Jpeg2000ResLevel *rlevel, int precno,
900  int layno, uint8_t *expn, int numgbits)
901 {
902  int bandno, cblkno, ret, nb_code_blocks;
903  int cwsno;
904 
905  if (layno < rlevel->band[0].prec[precno].decoded_layers)
906  return 0;
907  rlevel->band[0].prec[precno].decoded_layers = layno + 1;
908 
909  if (bytestream2_get_bytes_left(&s->g) == 0 && s->bit_index == 8) {
910  if (*tp_index < FF_ARRAY_ELEMS(tile->tile_part) - 1) {
911  s->g = tile->tile_part[++(*tp_index)].tpg;
912  }
913  }
914 
915  if (bytestream2_peek_be32(&s->g) == JPEG2000_SOP_FIXED_BYTES)
916  bytestream2_skip(&s->g, JPEG2000_SOP_BYTE_LENGTH);
917 
918  if (!(ret = get_bits(s, 1))) {
919  jpeg2000_flush(s);
920  return 0;
921  } else if (ret < 0)
922  return ret;
923 
924  for (bandno = 0; bandno < rlevel->nbands; bandno++) {
925  Jpeg2000Band *band = rlevel->band + bandno;
926  Jpeg2000Prec *prec = band->prec + precno;
927 
928  if (band->coord[0][0] == band->coord[0][1] ||
929  band->coord[1][0] == band->coord[1][1])
930  continue;
931  nb_code_blocks = prec->nb_codeblocks_height *
932  prec->nb_codeblocks_width;
933  for (cblkno = 0; cblkno < nb_code_blocks; cblkno++) {
934  Jpeg2000Cblk *cblk = prec->cblk + cblkno;
935  int incl, newpasses, llen;
936 
937  if (cblk->npasses)
938  incl = get_bits(s, 1);
939  else
940  incl = tag_tree_decode(s, prec->cblkincl + cblkno, layno + 1) == layno;
941  if (!incl)
942  continue;
943  else if (incl < 0)
944  return incl;
945 
946  if (!cblk->npasses) {
947  int v = expn[bandno] + numgbits - 1 -
948  tag_tree_decode(s, prec->zerobits + cblkno, 100);
949  if (v < 0) {
950  av_log(s->avctx, AV_LOG_ERROR,
951  "nonzerobits %d invalid\n", v);
952  return AVERROR_INVALIDDATA;
953  }
954  cblk->nonzerobits = v;
955  }
956  if ((newpasses = getnpasses(s)) < 0)
957  return newpasses;
958  av_assert2(newpasses > 0);
959  if (cblk->npasses + newpasses >= JPEG2000_MAX_PASSES) {
960  avpriv_request_sample(s->avctx, "Too many passes");
961  return AVERROR_PATCHWELCOME;
962  }
963  if ((llen = getlblockinc(s)) < 0)
964  return llen;
965  if (cblk->lblock + llen + av_log2(newpasses) > 16) {
966  avpriv_request_sample(s->avctx,
967  "Block with length beyond 16 bits");
968  return AVERROR_PATCHWELCOME;
969  }
970 
971  cblk->lblock += llen;
972 
973  cblk->nb_lengthinc = 0;
974  cblk->nb_terminationsinc = 0;
975  do {
976  int newpasses1 = 0;
977 
978  while (newpasses1 < newpasses) {
979  newpasses1 ++;
980  if (needs_termination(codsty->cblk_style, cblk->npasses + newpasses1 - 1)) {
981  cblk->nb_terminationsinc ++;
982  break;
983  }
984  }
985 
986  if ((ret = get_bits(s, av_log2(newpasses1) + cblk->lblock)) < 0)
987  return ret;
988  if (ret > sizeof(cblk->data)) {
989  avpriv_request_sample(s->avctx,
990  "Block with lengthinc greater than %"SIZE_SPECIFIER"",
991  sizeof(cblk->data));
992  return AVERROR_PATCHWELCOME;
993  }
994  cblk->lengthinc[cblk->nb_lengthinc++] = ret;
995  cblk->npasses += newpasses1;
996  newpasses -= newpasses1;
997  } while(newpasses);
998  }
999  }
1000  jpeg2000_flush(s);
1001 
1002  if (codsty->csty & JPEG2000_CSTY_EPH) {
1003  if (bytestream2_peek_be16(&s->g) == JPEG2000_EPH)
1004  bytestream2_skip(&s->g, 2);
1005  else
1006  av_log(s->avctx, AV_LOG_ERROR, "EPH marker not found. instead %X\n", bytestream2_peek_be32(&s->g));
1007  }
1008 
1009  for (bandno = 0; bandno < rlevel->nbands; bandno++) {
1010  Jpeg2000Band *band = rlevel->band + bandno;
1011  Jpeg2000Prec *prec = band->prec + precno;
1012 
1013  nb_code_blocks = prec->nb_codeblocks_height * prec->nb_codeblocks_width;
1014  for (cblkno = 0; cblkno < nb_code_blocks; cblkno++) {
1015  Jpeg2000Cblk *cblk = prec->cblk + cblkno;
1016  for (cwsno = 0; cwsno < cblk->nb_lengthinc; cwsno ++) {
1017  if ( bytestream2_get_bytes_left(&s->g) < cblk->lengthinc[cwsno]
1018  || sizeof(cblk->data) < cblk->length + cblk->lengthinc[cwsno] + 4
1019  ) {
1020  av_log(s->avctx, AV_LOG_ERROR,
1021  "Block length %"PRIu16" or lengthinc %d is too large, left %d\n",
1022  cblk->length, cblk->lengthinc[cwsno], bytestream2_get_bytes_left(&s->g));
1023  return AVERROR_INVALIDDATA;
1024  }
1025 
1026  bytestream2_get_bufferu(&s->g, cblk->data + cblk->length, cblk->lengthinc[cwsno]);
1027  cblk->length += cblk->lengthinc[cwsno];
1028  cblk->lengthinc[cwsno] = 0;
1029  if (cblk->nb_terminationsinc) {
1030  cblk->nb_terminationsinc--;
1031  cblk->nb_terminations++;
1032  cblk->data[cblk->length++] = 0xFF;
1033  cblk->data[cblk->length++] = 0xFF;
1034  cblk->data_start[cblk->nb_terminations] = cblk->length;
1035  }
1036  }
1037  }
1038  }
1039  return 0;
1040 }
1041 
1042 static int jpeg2000_decode_packets_po_iteration(Jpeg2000DecoderContext *s, Jpeg2000Tile *tile,
1043  int RSpoc, int CSpoc,
1044  int LYEpoc, int REpoc, int CEpoc,
1045  int Ppoc, int *tp_index)
1046 {
1047  int ret = 0;
1048  int layno, reslevelno, compno, precno, ok_reslevel;
1049  int x, y;
1050  int step_x, step_y;
1051 
1052  switch (Ppoc) {
1053  case JPEG2000_PGOD_RLCP:
1054  av_log(s->avctx, AV_LOG_DEBUG, "Progression order RLCP\n");
1055  ok_reslevel = 1;
1056  for (reslevelno = RSpoc; ok_reslevel && reslevelno < REpoc; reslevelno++) {
1057  ok_reslevel = 0;
1058  for (layno = 0; layno < LYEpoc; layno++) {
1059  for (compno = CSpoc; compno < CEpoc; compno++) {
1060  Jpeg2000CodingStyle *codsty = tile->codsty + compno;
1061  Jpeg2000QuantStyle *qntsty = tile->qntsty + compno;
1062  if (reslevelno < codsty->nreslevels) {
1063  Jpeg2000ResLevel *rlevel = tile->comp[compno].reslevel +
1064  reslevelno;
1065  ok_reslevel = 1;
1066  for (precno = 0; precno < rlevel->num_precincts_x * rlevel->num_precincts_y; precno++)
1067  if ((ret = jpeg2000_decode_packet(s, tile, tp_index,
1068  codsty, rlevel,
1069  precno, layno,
1070  qntsty->expn + (reslevelno ? 3 * (reslevelno - 1) + 1 : 0),
1071  qntsty->nguardbits)) < 0)
1072  return ret;
1073  }
1074  }
1075  }
1076  }
1077  break;
1078 
1079  case JPEG2000_PGOD_LRCP:
1080  av_log(s->avctx, AV_LOG_DEBUG, "Progression order LRCP\n");
1081  for (layno = 0; layno < LYEpoc; layno++) {
1082  ok_reslevel = 1;
1083  for (reslevelno = RSpoc; ok_reslevel && reslevelno < REpoc; reslevelno++) {
1084  ok_reslevel = 0;
1085  for (compno = CSpoc; compno < CEpoc; compno++) {
1086  Jpeg2000CodingStyle *codsty = tile->codsty + compno;
1087  Jpeg2000QuantStyle *qntsty = tile->qntsty + compno;
1088  if (reslevelno < codsty->nreslevels) {
1089  Jpeg2000ResLevel *rlevel = tile->comp[compno].reslevel +
1090  reslevelno;
1091  ok_reslevel = 1;
1092  for (precno = 0; precno < rlevel->num_precincts_x * rlevel->num_precincts_y; precno++)
1093  if ((ret = jpeg2000_decode_packet(s, tile, tp_index,
1094  codsty, rlevel,
1095  precno, layno,
1096  qntsty->expn + (reslevelno ? 3 * (reslevelno - 1) + 1 : 0),
1097  qntsty->nguardbits)) < 0)
1098  return ret;
1099  }
1100  }
1101  }
1102  }
1103  break;
1104 
1105  case JPEG2000_PGOD_CPRL:
1106  av_log(s->avctx, AV_LOG_DEBUG, "Progression order CPRL\n");
1107  for (compno = CSpoc; compno < CEpoc; compno++) {
1108  Jpeg2000Component *comp = tile->comp + compno;
1109  Jpeg2000CodingStyle *codsty = tile->codsty + compno;
1110  Jpeg2000QuantStyle *qntsty = tile->qntsty + compno;
1111  step_x = 32;
1112  step_y = 32;
1113 
1114  for (reslevelno = RSpoc; reslevelno < FFMIN(codsty->nreslevels, REpoc); reslevelno++) {
1115  uint8_t reducedresno = codsty->nreslevels - 1 -reslevelno; // ==> N_L - r
1116  Jpeg2000ResLevel *rlevel = comp->reslevel + reslevelno;
1117  step_x = FFMIN(step_x, rlevel->log2_prec_width + reducedresno);
1118  step_y = FFMIN(step_y, rlevel->log2_prec_height + reducedresno);
1119  }
1120  av_assert0(step_x < 32 && step_y < 32);
1121  step_x = 1<<step_x;
1122  step_y = 1<<step_y;
1123 
1124  for (y = tile->coord[1][0]; y < tile->coord[1][1]; y = (y/step_y + 1)*step_y) {
1125  for (x = tile->coord[0][0]; x < tile->coord[0][1]; x = (x/step_x + 1)*step_x) {
1126  for (reslevelno = RSpoc; reslevelno < FFMIN(codsty->nreslevels, REpoc); reslevelno++) {
1127  unsigned prcx, prcy;
1128  uint8_t reducedresno = codsty->nreslevels - 1 -reslevelno; // ==> N_L - r
1129  Jpeg2000ResLevel *rlevel = comp->reslevel + reslevelno;
1130  int xc = x / s->cdx[compno];
1131  int yc = y / s->cdy[compno];
1132 
1133  if (yc % (1 << (rlevel->log2_prec_height + reducedresno)) && y != tile->coord[1][0]) //FIXME this is a subset of the check
1134  continue;
1135 
1136  if (xc % (1 << (rlevel->log2_prec_width + reducedresno)) && x != tile->coord[0][0]) //FIXME this is a subset of the check
1137  continue;
1138 
1139  // check if a precinct exists
1140  prcx = ff_jpeg2000_ceildivpow2(xc, reducedresno) >> rlevel->log2_prec_width;
1141  prcy = ff_jpeg2000_ceildivpow2(yc, reducedresno) >> rlevel->log2_prec_height;
1142  prcx -= ff_jpeg2000_ceildivpow2(comp->coord_o[0][0], reducedresno) >> rlevel->log2_prec_width;
1143  prcy -= ff_jpeg2000_ceildivpow2(comp->coord_o[1][0], reducedresno) >> rlevel->log2_prec_height;
1144 
1145  precno = prcx + rlevel->num_precincts_x * prcy;
1146 
1147  if (prcx >= rlevel->num_precincts_x || prcy >= rlevel->num_precincts_y) {
1148  av_log(s->avctx, AV_LOG_WARNING, "prc %d %d outside limits %d %d\n",
1149  prcx, prcy, rlevel->num_precincts_x, rlevel->num_precincts_y);
1150  continue;
1151  }
1152 
1153  for (layno = 0; layno < LYEpoc; layno++) {
1154  if ((ret = jpeg2000_decode_packet(s, tile, tp_index, codsty, rlevel,
1155  precno, layno,
1156  qntsty->expn + (reslevelno ? 3 * (reslevelno - 1) + 1 : 0),
1157  qntsty->nguardbits)) < 0)
1158  return ret;
1159  }
1160  }
1161  }
1162  }
1163  }
1164  break;
1165 
1166  case JPEG2000_PGOD_RPCL:
1167  av_log(s->avctx, AV_LOG_WARNING, "Progression order RPCL\n");
1168  ok_reslevel = 1;
1169  for (reslevelno = RSpoc; ok_reslevel && reslevelno < REpoc; reslevelno++) {
1170  ok_reslevel = 0;
1171  step_x = 30;
1172  step_y = 30;
1173  for (compno = CSpoc; compno < CEpoc; compno++) {
1174  Jpeg2000Component *comp = tile->comp + compno;
1175  Jpeg2000CodingStyle *codsty = tile->codsty + compno;
1176 
1177  if (reslevelno < codsty->nreslevels) {
1178  uint8_t reducedresno = codsty->nreslevels - 1 -reslevelno; // ==> N_L - r
1179  Jpeg2000ResLevel *rlevel = comp->reslevel + reslevelno;
1180  step_x = FFMIN(step_x, rlevel->log2_prec_width + reducedresno);
1181  step_y = FFMIN(step_y, rlevel->log2_prec_height + reducedresno);
1182  }
1183  }
1184  step_x = 1<<step_x;
1185  step_y = 1<<step_y;
1186 
1187  for (y = tile->coord[1][0]; y < tile->coord[1][1]; y = (y/step_y + 1)*step_y) {
1188  for (x = tile->coord[0][0]; x < tile->coord[0][1]; x = (x/step_x + 1)*step_x) {
1189  for (compno = CSpoc; compno < CEpoc; compno++) {
1190  Jpeg2000Component *comp = tile->comp + compno;
1191  Jpeg2000CodingStyle *codsty = tile->codsty + compno;
1192  Jpeg2000QuantStyle *qntsty = tile->qntsty + compno;
1193  uint8_t reducedresno = codsty->nreslevels - 1 -reslevelno; // ==> N_L - r
1194  Jpeg2000ResLevel *rlevel = comp->reslevel + reslevelno;
1195  unsigned prcx, prcy;
1196 
1197  int xc = x / s->cdx[compno];
1198  int yc = y / s->cdy[compno];
1199 
1200  if (reslevelno >= codsty->nreslevels)
1201  continue;
1202 
1203  if (yc % (1 << (rlevel->log2_prec_height + reducedresno)) && y != tile->coord[1][0]) //FIXME this is a subset of the check
1204  continue;
1205 
1206  if (xc % (1 << (rlevel->log2_prec_width + reducedresno)) && x != tile->coord[0][0]) //FIXME this is a subset of the check
1207  continue;
1208 
1209  // check if a precinct exists
1210  prcx = ff_jpeg2000_ceildivpow2(xc, reducedresno) >> rlevel->log2_prec_width;
1211  prcy = ff_jpeg2000_ceildivpow2(yc, reducedresno) >> rlevel->log2_prec_height;
1212  prcx -= ff_jpeg2000_ceildivpow2(comp->coord_o[0][0], reducedresno) >> rlevel->log2_prec_width;
1213  prcy -= ff_jpeg2000_ceildivpow2(comp->coord_o[1][0], reducedresno) >> rlevel->log2_prec_height;
1214 
1215  precno = prcx + rlevel->num_precincts_x * prcy;
1216 
1217  ok_reslevel = 1;
1218  if (prcx >= rlevel->num_precincts_x || prcy >= rlevel->num_precincts_y) {
1219  av_log(s->avctx, AV_LOG_WARNING, "prc %d %d outside limits %d %d\n",
1220  prcx, prcy, rlevel->num_precincts_x, rlevel->num_precincts_y);
1221  continue;
1222  }
1223 
1224  for (layno = 0; layno < LYEpoc; layno++) {
1225  if ((ret = jpeg2000_decode_packet(s, tile, tp_index,
1226  codsty, rlevel,
1227  precno, layno,
1228  qntsty->expn + (reslevelno ? 3 * (reslevelno - 1) + 1 : 0),
1229  qntsty->nguardbits)) < 0)
1230  return ret;
1231  }
1232  }
1233  }
1234  }
1235  }
1236  break;
1237 
1238  case JPEG2000_PGOD_PCRL:
1239  av_log(s->avctx, AV_LOG_WARNING, "Progression order PCRL\n");
1240  step_x = 32;
1241  step_y = 32;
1242  for (compno = CSpoc; compno < CEpoc; compno++) {
1243  Jpeg2000Component *comp = tile->comp + compno;
1244  Jpeg2000CodingStyle *codsty = tile->codsty + compno;
1245 
1246  for (reslevelno = RSpoc; reslevelno < FFMIN(codsty->nreslevels, REpoc); reslevelno++) {
1247  uint8_t reducedresno = codsty->nreslevels - 1 -reslevelno; // ==> N_L - r
1248  Jpeg2000ResLevel *rlevel = comp->reslevel + reslevelno;
1249  step_x = FFMIN(step_x, rlevel->log2_prec_width + reducedresno);
1250  step_y = FFMIN(step_y, rlevel->log2_prec_height + reducedresno);
1251  }
1252  }
1253  if (step_x >= 31 || step_y >= 31){
1254  avpriv_request_sample(s->avctx, "PCRL with large step");
1255  return AVERROR_PATCHWELCOME;
1256  }
1257  step_x = 1<<step_x;
1258  step_y = 1<<step_y;
1259 
1260  for (y = tile->coord[1][0]; y < tile->coord[1][1]; y = (y/step_y + 1)*step_y) {
1261  for (x = tile->coord[0][0]; x < tile->coord[0][1]; x = (x/step_x + 1)*step_x) {
1262  for (compno = CSpoc; compno < CEpoc; compno++) {
1263  Jpeg2000Component *comp = tile->comp + compno;
1264  Jpeg2000CodingStyle *codsty = tile->codsty + compno;
1265  Jpeg2000QuantStyle *qntsty = tile->qntsty + compno;
1266  int xc = x / s->cdx[compno];
1267  int yc = y / s->cdy[compno];
1268 
1269  for (reslevelno = RSpoc; reslevelno < FFMIN(codsty->nreslevels, REpoc); reslevelno++) {
1270  unsigned prcx, prcy;
1271  uint8_t reducedresno = codsty->nreslevels - 1 -reslevelno; // ==> N_L - r
1272  Jpeg2000ResLevel *rlevel = comp->reslevel + reslevelno;
1273 
1274  if (yc % (1 << (rlevel->log2_prec_height + reducedresno)) && y != tile->coord[1][0]) //FIXME this is a subset of the check
1275  continue;
1276 
1277  if (xc % (1 << (rlevel->log2_prec_width + reducedresno)) && x != tile->coord[0][0]) //FIXME this is a subset of the check
1278  continue;
1279 
1280  // check if a precinct exists
1281  prcx = ff_jpeg2000_ceildivpow2(xc, reducedresno) >> rlevel->log2_prec_width;
1282  prcy = ff_jpeg2000_ceildivpow2(yc, reducedresno) >> rlevel->log2_prec_height;
1283  prcx -= ff_jpeg2000_ceildivpow2(comp->coord_o[0][0], reducedresno) >> rlevel->log2_prec_width;
1284  prcy -= ff_jpeg2000_ceildivpow2(comp->coord_o[1][0], reducedresno) >> rlevel->log2_prec_height;
1285 
1286  precno = prcx + rlevel->num_precincts_x * prcy;
1287 
1288  if (prcx >= rlevel->num_precincts_x || prcy >= rlevel->num_precincts_y) {
1289  av_log(s->avctx, AV_LOG_WARNING, "prc %d %d outside limits %d %d\n",
1290  prcx, prcy, rlevel->num_precincts_x, rlevel->num_precincts_y);
1291  continue;
1292  }
1293 
1294  for (layno = 0; layno < LYEpoc; layno++) {
1295  if ((ret = jpeg2000_decode_packet(s, tile, tp_index, codsty, rlevel,
1296  precno, layno,
1297  qntsty->expn + (reslevelno ? 3 * (reslevelno - 1) + 1 : 0),
1298  qntsty->nguardbits)) < 0)
1299  return ret;
1300  }
1301  }
1302  }
1303  }
1304  }
1305  break;
1306 
1307  default:
1308  break;
1309  }
1310 
1311  return ret;
1312 }
1313 
1314 static int jpeg2000_decode_packets(Jpeg2000DecoderContext *s, Jpeg2000Tile *tile)
1315 {
1316  int ret = AVERROR_BUG;
1317  int i;
1318  int tp_index = 0;
1319 
1320  s->bit_index = 8;
1321  if (tile->poc.nb_poc) {
1322  for (i=0; i<tile->poc.nb_poc; i++) {
1323  Jpeg2000POCEntry *e = &tile->poc.poc[i];
1324  ret = jpeg2000_decode_packets_po_iteration(s, tile,
1325  e->RSpoc, e->CSpoc,
1326  FFMIN(e->LYEpoc, tile->codsty[0].nlayers),
1327  e->REpoc,
1328  FFMIN(e->CEpoc, s->ncomponents),
1329  e->Ppoc, &tp_index
1330  );
1331  if (ret < 0)
1332  return ret;
1333  }
1334  } else {
1335  ret = jpeg2000_decode_packets_po_iteration(s, tile,
1336  0, 0,
1337  tile->codsty[0].nlayers,
1338  33,
1339  s->ncomponents,
1340  tile->codsty[0].prog_order,
1341  &tp_index
1342  );
1343  }
1344  /* EOC marker reached */
1345  bytestream2_skip(&s->g, 2);
1346 
1347  return ret;
1348 }
1349 
1350 /* TIER-1 routines */
1351 static void decode_sigpass(Jpeg2000T1Context *t1, int width, int height,
1352  int bpno, int bandno,
1353  int vert_causal_ctx_csty_symbol)
1354 {
1355  int mask = 3 << (bpno - 1), y0, x, y;
1356 
1357  for (y0 = 0; y0 < height; y0 += 4)
1358  for (x = 0; x < width; x++)
1359  for (y = y0; y < height && y < y0 + 4; y++) {
1360  int flags_mask = -1;
1361  if (vert_causal_ctx_csty_symbol && y == y0 + 3)
1362  flags_mask &= ~(JPEG2000_T1_SIG_S | JPEG2000_T1_SIG_SW | JPEG2000_T1_SIG_SE | JPEG2000_T1_SGN_S);
1363  if ((t1->flags[(y+1) * t1->stride + x+1] & JPEG2000_T1_SIG_NB & flags_mask)
1364  && !(t1->flags[(y+1) * t1->stride + x+1] & (JPEG2000_T1_SIG | JPEG2000_T1_VIS))) {
1365  if (ff_mqc_decode(&t1->mqc, t1->mqc.cx_states + ff_jpeg2000_getsigctxno(t1->flags[(y+1) * t1->stride + x+1] & flags_mask, bandno))) {
1366  int xorbit, ctxno = ff_jpeg2000_getsgnctxno(t1->flags[(y+1) * t1->stride + x+1] & flags_mask, &xorbit);
1367  if (t1->mqc.raw)
1368  t1->data[(y) * t1->stride + x] = ff_mqc_decode(&t1->mqc, t1->mqc.cx_states + ctxno) ? -mask : mask;
1369  else
1370  t1->data[(y) * t1->stride + x] = (ff_mqc_decode(&t1->mqc, t1->mqc.cx_states + ctxno) ^ xorbit) ?
1371  -mask : mask;
1372 
1373  ff_jpeg2000_set_significance(t1, x, y,
1374  t1->data[(y) * t1->stride + x] < 0);
1375  }
1376  t1->flags[(y + 1) * t1->stride + x + 1] |= JPEG2000_T1_VIS;
1377  }
1378  }
1379 }
1380 
1381 static void decode_refpass(Jpeg2000T1Context *t1, int width, int height,
1382  int bpno, int vert_causal_ctx_csty_symbol)
1383 {
1384  int phalf, nhalf;
1385  int y0, x, y;
1386 
1387  phalf = 1 << (bpno - 1);
1388  nhalf = -phalf;
1389 
1390  for (y0 = 0; y0 < height; y0 += 4)
1391  for (x = 0; x < width; x++)
1392  for (y = y0; y < height && y < y0 + 4; y++)
1393  if ((t1->flags[(y + 1) * t1->stride + x + 1] & (JPEG2000_T1_SIG | JPEG2000_T1_VIS)) == JPEG2000_T1_SIG) {
1394  int flags_mask = (vert_causal_ctx_csty_symbol && y == y0 + 3) ?
1395  ~(JPEG2000_T1_SIG_S | JPEG2000_T1_SIG_SW | JPEG2000_T1_SIG_SE | JPEG2000_T1_SGN_S) : -1;
1396  int ctxno = ff_jpeg2000_getrefctxno(t1->flags[(y + 1) * t1->stride + x + 1] & flags_mask);
1397  int r = ff_mqc_decode(&t1->mqc,
1398  t1->mqc.cx_states + ctxno)
1399  ? phalf : nhalf;
1400  t1->data[(y) * t1->stride + x] += t1->data[(y) * t1->stride + x] < 0 ? -r : r;
1401  t1->flags[(y + 1) * t1->stride + x + 1] |= JPEG2000_T1_REF;
1402  }
1403 }
1404 
1405 static void decode_clnpass(Jpeg2000DecoderContext *s, Jpeg2000T1Context *t1,
1406  int width, int height, int bpno, int bandno,
1407  int seg_symbols, int vert_causal_ctx_csty_symbol)
1408 {
1409  int mask = 3 << (bpno - 1), y0, x, y, runlen, dec;
1410 
1411  for (y0 = 0; y0 < height; y0 += 4) {
1412  for (x = 0; x < width; x++) {
1413  int flags_mask = -1;
1414  if (vert_causal_ctx_csty_symbol)
1415  flags_mask &= ~(JPEG2000_T1_SIG_S | JPEG2000_T1_SIG_SW | JPEG2000_T1_SIG_SE | JPEG2000_T1_SGN_S);
1416  if (y0 + 3 < height &&
1417  !((t1->flags[(y0 + 1) * t1->stride + x + 1] & (JPEG2000_T1_SIG_NB | JPEG2000_T1_VIS | JPEG2000_T1_SIG)) ||
1418  (t1->flags[(y0 + 2) * t1->stride + x + 1] & (JPEG2000_T1_SIG_NB | JPEG2000_T1_VIS | JPEG2000_T1_SIG)) ||
1419  (t1->flags[(y0 + 3) * t1->stride + x + 1] & (JPEG2000_T1_SIG_NB | JPEG2000_T1_VIS | JPEG2000_T1_SIG)) ||
1420  (t1->flags[(y0 + 4) * t1->stride + x + 1] & (JPEG2000_T1_SIG_NB | JPEG2000_T1_VIS | JPEG2000_T1_SIG) & flags_mask))) {
1421  if (!ff_mqc_decode(&t1->mqc, t1->mqc.cx_states + MQC_CX_RL))
1422  continue;
1423  runlen = ff_mqc_decode(&t1->mqc,
1424  t1->mqc.cx_states + MQC_CX_UNI);
1425  runlen = (runlen << 1) | ff_mqc_decode(&t1->mqc,
1426  t1->mqc.cx_states +
1427  MQC_CX_UNI);
1428  dec = 1;
1429  } else {
1430  runlen = 0;
1431  dec = 0;
1432  }
1433 
1434  for (y = y0 + runlen; y < y0 + 4 && y < height; y++) {
1435  int flags_mask = -1;
1436  if (vert_causal_ctx_csty_symbol && y == y0 + 3)
1437  flags_mask &= ~(JPEG2000_T1_SIG_S | JPEG2000_T1_SIG_SW | JPEG2000_T1_SIG_SE | JPEG2000_T1_SGN_S);
1438  if (!dec) {
1439  if (!(t1->flags[(y+1) * t1->stride + x+1] & (JPEG2000_T1_SIG | JPEG2000_T1_VIS))) {
1440  dec = ff_mqc_decode(&t1->mqc, t1->mqc.cx_states + ff_jpeg2000_getsigctxno(t1->flags[(y+1) * t1->stride + x+1] & flags_mask,
1441  bandno));
1442  }
1443  }
1444  if (dec) {
1445  int xorbit;
1446  int ctxno = ff_jpeg2000_getsgnctxno(t1->flags[(y + 1) * t1->stride + x + 1] & flags_mask,
1447  &xorbit);
1448  t1->data[(y) * t1->stride + x] = (ff_mqc_decode(&t1->mqc,
1449  t1->mqc.cx_states + ctxno) ^
1450  xorbit)
1451  ? -mask : mask;
1452  ff_jpeg2000_set_significance(t1, x, y, t1->data[(y) * t1->stride + x] < 0);
1453  }
1454  dec = 0;
1455  t1->flags[(y + 1) * t1->stride + x + 1] &= ~JPEG2000_T1_VIS;
1456  }
1457  }
1458  }
1459  if (seg_symbols) {
1460  int val;
1461  val = ff_mqc_decode(&t1->mqc, t1->mqc.cx_states + MQC_CX_UNI);
1462  val = (val << 1) + ff_mqc_decode(&t1->mqc, t1->mqc.cx_states + MQC_CX_UNI);
1463  val = (val << 1) + ff_mqc_decode(&t1->mqc, t1->mqc.cx_states + MQC_CX_UNI);
1464  val = (val << 1) + ff_mqc_decode(&t1->mqc, t1->mqc.cx_states + MQC_CX_UNI);
1465  if (val != 0xa)
1466  av_log(s->avctx, AV_LOG_ERROR,
1467  "Segmentation symbol value incorrect\n");
1468  }
1469 }
1470 
1471 static int decode_cblk(Jpeg2000DecoderContext *s, Jpeg2000CodingStyle *codsty,
1472  Jpeg2000T1Context *t1, Jpeg2000Cblk *cblk,
1473  int width, int height, int bandpos)
1474 {
1475  int passno = cblk->npasses, pass_t = 2, bpno = cblk->nonzerobits - 1;
1476  int pass_cnt = 0;
1477  int vert_causal_ctx_csty_symbol = codsty->cblk_style & JPEG2000_CBLK_VSC;
1478  int term_cnt = 0;
1479  int coder_type;
1480 
1481  av_assert0(width <= 1024U && height <= 1024U);
1482  av_assert0(width*height <= 4096);
1483 
1484  memset(t1->data, 0, t1->stride * height * sizeof(*t1->data));
1485 
1486  /* If code-block contains no compressed data: nothing to do. */
1487  if (!cblk->length)
1488  return 0;
1489 
1490  memset(t1->flags, 0, t1->stride * (height + 2) * sizeof(*t1->flags));
1491 
1492  cblk->data[cblk->length] = 0xff;
1493  cblk->data[cblk->length+1] = 0xff;
1494  ff_mqc_initdec(&t1->mqc, cblk->data, 0, 1);
1495 
1496  while (passno--) {
1497  if (bpno < 0) {
1498  av_log(s->avctx, AV_LOG_ERROR, "bpno became negative\n");
1499  return AVERROR_INVALIDDATA;
1500  }
1501  switch(pass_t) {
1502  case 0:
1503  decode_sigpass(t1, width, height, bpno + 1, bandpos,
1504  vert_causal_ctx_csty_symbol);
1505  break;
1506  case 1:
1507  decode_refpass(t1, width, height, bpno + 1, vert_causal_ctx_csty_symbol);
1508  break;
1509  case 2:
1510  av_assert2(!t1->mqc.raw);
1511  decode_clnpass(s, t1, width, height, bpno + 1, bandpos,
1512  codsty->cblk_style & JPEG2000_CBLK_SEGSYM,
1513  vert_causal_ctx_csty_symbol);
1514  break;
1515  }
1516  if (codsty->cblk_style & JPEG2000_CBLK_RESET) // XXX no testcase for just this
1517  ff_mqc_init_contexts(&t1->mqc);
1518 
1519  if (passno && (coder_type = needs_termination(codsty->cblk_style, pass_cnt))) {
1520  if (term_cnt >= cblk->nb_terminations) {
1521  av_log(s->avctx, AV_LOG_ERROR, "Missing needed termination \n");
1522  return AVERROR_INVALIDDATA;
1523  }
1524  if (FFABS(cblk->data + cblk->data_start[term_cnt + 1] - 2 - t1->mqc.bp) > 0) {
1525  av_log(s->avctx, AV_LOG_WARNING, "Mid mismatch %"PTRDIFF_SPECIFIER" in pass %d of %d\n",
1526  cblk->data + cblk->data_start[term_cnt + 1] - 2 - t1->mqc.bp,
1527  pass_cnt, cblk->npasses);
1528  }
1529 
1530  ff_mqc_initdec(&t1->mqc, cblk->data + cblk->data_start[++term_cnt], coder_type == 2, 0);
1531  }
1532 
1533  pass_t++;
1534  if (pass_t == 3) {
1535  bpno--;
1536  pass_t = 0;
1537  }
1538  pass_cnt ++;
1539  }
1540 
1541  if (cblk->data + cblk->length - 2*(term_cnt < cblk->nb_terminations) != t1->mqc.bp) {
1542  av_log(s->avctx, AV_LOG_WARNING, "End mismatch %"PTRDIFF_SPECIFIER"\n",
1543  cblk->data + cblk->length - 2*(term_cnt < cblk->nb_terminations) - t1->mqc.bp);
1544  }
1545 
1546  return 0;
1547 }
1548 
1549 /* TODO: Verify dequantization for lossless case
1550  * comp->data can be float or int
1551  * band->stepsize can be float or int
1552  * depending on the type of DWT transformation.
1553  * see ISO/IEC 15444-1:2002 A.6.1 */
1554 
1555 /* Float dequantization of a codeblock.*/
1556 static void dequantization_float(int x, int y, Jpeg2000Cblk *cblk,
1557  Jpeg2000Component *comp,
1558  Jpeg2000T1Context *t1, Jpeg2000Band *band)
1559 {
1560  int i, j;
1561  int w = cblk->coord[0][1] - cblk->coord[0][0];
1562  for (j = 0; j < (cblk->coord[1][1] - cblk->coord[1][0]); ++j) {
1563  float *datap = &comp->f_data[(comp->coord[0][1] - comp->coord[0][0]) * (y + j) + x];
1564  int *src = t1->data + j*t1->stride;
1565  for (i = 0; i < w; ++i)
1566  datap[i] = src[i] * band->f_stepsize;
1567  }
1568 }
1569 
1570 /* Integer dequantization of a codeblock.*/
1571 static void dequantization_int(int x, int y, Jpeg2000Cblk *cblk,
1572  Jpeg2000Component *comp,
1573  Jpeg2000T1Context *t1, Jpeg2000Band *band)
1574 {
1575  int i, j;
1576  int w = cblk->coord[0][1] - cblk->coord[0][0];
1577  for (j = 0; j < (cblk->coord[1][1] - cblk->coord[1][0]); ++j) {
1578  int32_t *datap = &comp->i_data[(comp->coord[0][1] - comp->coord[0][0]) * (y + j) + x];
1579  int *src = t1->data + j*t1->stride;
1580  if (band->i_stepsize == 32768) {
1581  for (i = 0; i < w; ++i)
1582  datap[i] = src[i] / 2;
1583  } else {
1584  // This should be VERY uncommon
1585  for (i = 0; i < w; ++i)
1586  datap[i] = (src[i] * (int64_t)band->i_stepsize) / 65536;
1587  }
1588  }
1589 }
1590 
1591 static void dequantization_int_97(int x, int y, Jpeg2000Cblk *cblk,
1592  Jpeg2000Component *comp,
1593  Jpeg2000T1Context *t1, Jpeg2000Band *band)
1594 {
1595  int i, j;
1596  int w = cblk->coord[0][1] - cblk->coord[0][0];
1597  for (j = 0; j < (cblk->coord[1][1] - cblk->coord[1][0]); ++j) {
1598  int32_t *datap = &comp->i_data[(comp->coord[0][1] - comp->coord[0][0]) * (y + j) + x];
1599  int *src = t1->data + j*t1->stride;
1600  for (i = 0; i < w; ++i)
1601  datap[i] = (src[i] * (int64_t)band->i_stepsize + (1<<15)) >> 16;
1602  }
1603 }
1604 
1605 static inline void mct_decode(Jpeg2000DecoderContext *s, Jpeg2000Tile *tile)
1606 {
1607  int i, csize = 1;
1608  void *src[3];
1609 
1610  for (i = 1; i < 3; i++) {
1611  if (tile->codsty[0].transform != tile->codsty[i].transform) {
1612  av_log(s->avctx, AV_LOG_ERROR, "Transforms mismatch, MCT not supported\n");
1613  return;
1614  }
1615  if (memcmp(tile->comp[0].coord, tile->comp[i].coord, sizeof(tile->comp[0].coord))) {
1616  av_log(s->avctx, AV_LOG_ERROR, "Coords mismatch, MCT not supported\n");
1617  return;
1618  }
1619  }
1620 
1621  for (i = 0; i < 3; i++)
1622  if (tile->codsty[0].transform == FF_DWT97)
1623  src[i] = tile->comp[i].f_data;
1624  else
1625  src[i] = tile->comp[i].i_data;
1626 
1627  for (i = 0; i < 2; i++)
1628  csize *= tile->comp[0].coord[i][1] - tile->comp[0].coord[i][0];
1629 
1630  s->dsp.mct_decode[tile->codsty[0].transform](src[0], src[1], src[2], csize);
1631 }
1632 
1633 static inline void tile_codeblocks(Jpeg2000DecoderContext *s, Jpeg2000Tile *tile)
1634 {
1635  Jpeg2000T1Context t1;
1636 
1637  int compno, reslevelno, bandno;
1638 
1639  /* Loop on tile components */
1640  for (compno = 0; compno < s->ncomponents; compno++) {
1641  Jpeg2000Component *comp = tile->comp + compno;
1642  Jpeg2000CodingStyle *codsty = tile->codsty + compno;
1643 
1644  t1.stride = (1<<codsty->log2_cblk_width) + 2;
1645 
1646  /* Loop on resolution levels */
1647  for (reslevelno = 0; reslevelno < codsty->nreslevels2decode; reslevelno++) {
1648  Jpeg2000ResLevel *rlevel = comp->reslevel + reslevelno;
1649  /* Loop on bands */
1650  for (bandno = 0; bandno < rlevel->nbands; bandno++) {
1651  int nb_precincts, precno;
1652  Jpeg2000Band *band = rlevel->band + bandno;
1653  int cblkno = 0, bandpos;
1654 
1655  bandpos = bandno + (reslevelno > 0);
1656 
1657  if (band->coord[0][0] == band->coord[0][1] ||
1658  band->coord[1][0] == band->coord[1][1])
1659  continue;
1660 
1661  nb_precincts = rlevel->num_precincts_x * rlevel->num_precincts_y;
1662  /* Loop on precincts */
1663  for (precno = 0; precno < nb_precincts; precno++) {
1664  Jpeg2000Prec *prec = band->prec + precno;
1665 
1666  /* Loop on codeblocks */
1667  for (cblkno = 0;
1668  cblkno < prec->nb_codeblocks_width * prec->nb_codeblocks_height;
1669  cblkno++) {
1670  int x, y;
1671  Jpeg2000Cblk *cblk = prec->cblk + cblkno;
1672  decode_cblk(s, codsty, &t1, cblk,
1673  cblk->coord[0][1] - cblk->coord[0][0],
1674  cblk->coord[1][1] - cblk->coord[1][0],
1675  bandpos);
1676 
1677  x = cblk->coord[0][0] - band->coord[0][0];
1678  y = cblk->coord[1][0] - band->coord[1][0];
1679 
1680  if (codsty->transform == FF_DWT97)
1681  dequantization_float(x, y, cblk, comp, &t1, band);
1682  else if (codsty->transform == FF_DWT97_INT)
1683  dequantization_int_97(x, y, cblk, comp, &t1, band);
1684  else
1685  dequantization_int(x, y, cblk, comp, &t1, band);
1686  } /* end cblk */
1687  } /*end prec */
1688  } /* end band */
1689  } /* end reslevel */
1690 
1691  /* inverse DWT */
1692  ff_dwt_decode(&comp->dwt, codsty->transform == FF_DWT97 ? (void*)comp->f_data : (void*)comp->i_data);
1693  } /*end comp */
1694 }
1695 
1696 #define WRITE_FRAME(D, PIXEL) \
1697  static inline void write_frame_ ## D(Jpeg2000DecoderContext * s, Jpeg2000Tile * tile, \
1698  AVFrame * picture, int precision) \
1699  { \
1700  const AVPixFmtDescriptor *pixdesc = av_pix_fmt_desc_get(s->avctx->pix_fmt); \
1701  int planar = !!(pixdesc->flags & AV_PIX_FMT_FLAG_PLANAR); \
1702  int pixelsize = planar ? 1 : pixdesc->nb_components; \
1703  \
1704  int compno; \
1705  int x, y; \
1706  \
1707  for (compno = 0; compno < s->ncomponents; compno++) { \
1708  Jpeg2000Component *comp = tile->comp + compno; \
1709  Jpeg2000CodingStyle *codsty = tile->codsty + compno; \
1710  PIXEL *line; \
1711  float *datap = comp->f_data; \
1712  int32_t *i_datap = comp->i_data; \
1713  int cbps = s->cbps[compno]; \
1714  int w = tile->comp[compno].coord[0][1] - s->image_offset_x; \
1715  int plane = 0; \
1716  \
1717  if (planar) \
1718  plane = s->cdef[compno] ? s->cdef[compno]-1 : (s->ncomponents-1); \
1719  \
1720  y = tile->comp[compno].coord[1][0] - s->image_offset_y / s->cdy[compno]; \
1721  line = (PIXEL *)picture->data[plane] + y * (picture->linesize[plane] / sizeof(PIXEL));\
1722  for (; y < tile->comp[compno].coord[1][1] - s->image_offset_y; y++) { \
1723  PIXEL *dst; \
1724  \
1725  x = tile->comp[compno].coord[0][0] - s->image_offset_x / s->cdx[compno]; \
1726  dst = line + x * pixelsize + compno*!planar; \
1727  \
1728  if (codsty->transform == FF_DWT97) { \
1729  for (; x < w; x++) { \
1730  int val = lrintf(*datap) + (1 << (cbps - 1)); \
1731  /* DC level shift and clip see ISO 15444-1:2002 G.1.2 */ \
1732  val = av_clip(val, 0, (1 << cbps) - 1); \
1733  *dst = val << (precision - cbps); \
1734  datap++; \
1735  dst += pixelsize; \
1736  } \
1737  } else { \
1738  for (; x < w; x++) { \
1739  int val = *i_datap + (1 << (cbps - 1)); \
1740  /* DC level shift and clip see ISO 15444-1:2002 G.1.2 */ \
1741  val = av_clip(val, 0, (1 << cbps) - 1); \
1742  *dst = val << (precision - cbps); \
1743  i_datap++; \
1744  dst += pixelsize; \
1745  } \
1746  } \
1747  line += picture->linesize[plane] / sizeof(PIXEL); \
1748  } \
1749  } \
1750  \
1751  }
1752 
1753 WRITE_FRAME(8, uint8_t)
1754 WRITE_FRAME(16, uint16_t)
1755 
1756 #undef WRITE_FRAME
1757 
1758 static int jpeg2000_decode_tile(AVCodecContext *avctx, void *td,
1759  int jobnr, int threadnr)
1760 {
1761  Jpeg2000DecoderContext *s = avctx->priv_data;
1762  AVFrame *picture = td;
1763  Jpeg2000Tile *tile = s->tile + jobnr;
1764  int x;
1765 
1766  tile_codeblocks(s, tile);
1767 
1768  /* inverse MCT transformation */
1769  if (tile->codsty[0].mct)
1770  mct_decode(s, tile);
1771 
1772  for (x = 0; x < s->ncomponents; x++) {
1773  if (s->cdef[x] < 0) {
1774  for (x = 0; x < s->ncomponents; x++) {
1775  s->cdef[x] = x + 1;
1776  }
1777  if ((s->ncomponents & 1) == 0)
1778  s->cdef[s->ncomponents-1] = 0;
1779  break;
1780  }
1781  }
1782 
1783  if (s->precision <= 8) {
1784  write_frame_8(s, tile, picture, 8);
1785  } else {
1786  int precision = picture->format == AV_PIX_FMT_XYZ12 ||
1787  picture->format == AV_PIX_FMT_RGB48 ||
1788  picture->format == AV_PIX_FMT_RGBA64 ||
1789  picture->format == AV_PIX_FMT_GRAY16 ? 16 : s->precision;
1790 
1791  write_frame_16(s, tile, picture, precision);
1792  }
1793 
1794  return 0;
1795 }
1796 
1797 static void jpeg2000_dec_cleanup(Jpeg2000DecoderContext *s)
1798 {
1799  int tileno, compno;
1800  for (tileno = 0; tileno < s->numXtiles * s->numYtiles; tileno++) {
1801  if (s->tile[tileno].comp) {
1802  for (compno = 0; compno < s->ncomponents; compno++) {
1803  Jpeg2000Component *comp = s->tile[tileno].comp + compno;
1804  Jpeg2000CodingStyle *codsty = s->tile[tileno].codsty + compno;
1805 
1806  ff_jpeg2000_cleanup(comp, codsty);
1807  }
1808  av_freep(&s->tile[tileno].comp);
1809  }
1810  }
1811  av_freep(&s->tile);
1812  memset(s->codsty, 0, sizeof(s->codsty));
1813  memset(s->qntsty, 0, sizeof(s->qntsty));
1814  memset(s->properties, 0, sizeof(s->properties));
1815  memset(&s->poc , 0, sizeof(s->poc));
1816  s->numXtiles = s->numYtiles = 0;
1817  s->ncomponents = 0;
1818 }
1819 
1820 static int jpeg2000_read_main_headers(Jpeg2000DecoderContext *s)
1821 {
1822  Jpeg2000CodingStyle *codsty = s->codsty;
1823  Jpeg2000QuantStyle *qntsty = s->qntsty;
1824  Jpeg2000POC *poc = &s->poc;
1825  uint8_t *properties = s->properties;
1826 
1827  for (;;) {
1828  int len, ret = 0;
1829  uint16_t marker;
1830  int oldpos;
1831 
1832  if (bytestream2_get_bytes_left(&s->g) < 2) {
1833  av_log(s->avctx, AV_LOG_ERROR, "Missing EOC\n");
1834  break;
1835  }
1836 
1837  marker = bytestream2_get_be16u(&s->g);
1838  oldpos = bytestream2_tell(&s->g);
1839 
1840  if (marker == JPEG2000_SOD) {
1841  Jpeg2000Tile *tile;
1842  Jpeg2000TilePart *tp;
1843 
1844  if (!s->tile) {
1845  av_log(s->avctx, AV_LOG_ERROR, "Missing SIZ\n");
1846  return AVERROR_INVALIDDATA;
1847  }
1848  if (s->curtileno < 0) {
1849  av_log(s->avctx, AV_LOG_ERROR, "Missing SOT\n");
1850  return AVERROR_INVALIDDATA;
1851  }
1852 
1853  tile = s->tile + s->curtileno;
1854  tp = tile->tile_part + tile->tp_idx;
1855  if (tp->tp_end < s->g.buffer) {
1856  av_log(s->avctx, AV_LOG_ERROR, "Invalid tpend\n");
1857  return AVERROR_INVALIDDATA;
1858  }
1859  bytestream2_init(&tp->tpg, s->g.buffer, tp->tp_end - s->g.buffer);
1860  bytestream2_skip(&s->g, tp->tp_end - s->g.buffer);
1861 
1862  continue;
1863  }
1864  if (marker == JPEG2000_EOC)
1865  break;
1866 
1867  len = bytestream2_get_be16(&s->g);
1868  if (len < 2 || bytestream2_get_bytes_left(&s->g) < len - 2) {
1869  av_log(s->avctx, AV_LOG_ERROR, "Invalid len %d left=%d\n", len, bytestream2_get_bytes_left(&s->g));
1870  return AVERROR_INVALIDDATA;
1871  }
1872 
1873  switch (marker) {
1874  case JPEG2000_SIZ:
1875  if (s->ncomponents) {
1876  av_log(s->avctx, AV_LOG_ERROR, "Duplicate SIZ\n");
1877  return AVERROR_INVALIDDATA;
1878  }
1879  ret = get_siz(s);
1880  if (!s->tile)
1881  s->numXtiles = s->numYtiles = 0;
1882  break;
1883  case JPEG2000_COC:
1884  ret = get_coc(s, codsty, properties);
1885  break;
1886  case JPEG2000_COD:
1887  ret = get_cod(s, codsty, properties);
1888  break;
1889  case JPEG2000_QCC:
1890  ret = get_qcc(s, len, qntsty, properties);
1891  break;
1892  case JPEG2000_QCD:
1893  ret = get_qcd(s, len, qntsty, properties);
1894  break;
1895  case JPEG2000_POC:
1896  ret = get_poc(s, len, poc);
1897  break;
1898  case JPEG2000_SOT:
1899  if (!(ret = get_sot(s, len))) {
1900  av_assert1(s->curtileno >= 0);
1901  codsty = s->tile[s->curtileno].codsty;
1902  qntsty = s->tile[s->curtileno].qntsty;
1903  poc = &s->tile[s->curtileno].poc;
1904  properties = s->tile[s->curtileno].properties;
1905  }
1906  break;
1907  case JPEG2000_PLM:
1908  // the PLM marker is ignored
1909  case JPEG2000_COM:
1910  // the comment is ignored
1911  bytestream2_skip(&s->g, len - 2);
1912  break;
1913  case JPEG2000_TLM:
1914  // Tile-part lengths
1915  ret = get_tlm(s, len);
1916  break;
1917  case JPEG2000_PLT:
1918  // Packet length, tile-part header
1919  ret = get_plt(s, len);
1920  break;
1921  default:
1922  av_log(s->avctx, AV_LOG_ERROR,
1923  "unsupported marker 0x%.4"PRIX16" at pos 0x%X\n",
1924  marker, bytestream2_tell(&s->g) - 4);
1925  bytestream2_skip(&s->g, len - 2);
1926  break;
1927  }
1928  if (bytestream2_tell(&s->g) - oldpos != len || ret) {
1929  av_log(s->avctx, AV_LOG_ERROR,
1930  "error during processing marker segment %.4"PRIx16"\n",
1931  marker);
1932  return ret ? ret : -1;
1933  }
1934  }
1935  return 0;
1936 }
1937 
1938 /* Read bit stream packets --> T2 operation. */
1939 static int jpeg2000_read_bitstream_packets(Jpeg2000DecoderContext *s)
1940 {
1941  int ret = 0;
1942  int tileno;
1943 
1944  for (tileno = 0; tileno < s->numXtiles * s->numYtiles; tileno++) {
1945  Jpeg2000Tile *tile = s->tile + tileno;
1946 
1947  if ((ret = init_tile(s, tileno)) < 0)
1948  return ret;
1949 
1950  s->g = tile->tile_part[0].tpg;
1951  if ((ret = jpeg2000_decode_packets(s, tile)) < 0)
1952  return ret;
1953  }
1954 
1955  return 0;
1956 }
1957 
1958 static int jp2_find_codestream(Jpeg2000DecoderContext *s)
1959 {
1960  uint32_t atom_size, atom, atom_end;
1961  int search_range = 10;
1962 
1963  while (search_range
1964  &&
1965  bytestream2_get_bytes_left(&s->g) >= 8) {
1966  atom_size = bytestream2_get_be32u(&s->g);
1967  atom = bytestream2_get_be32u(&s->g);
1968  atom_end = bytestream2_tell(&s->g) + atom_size - 8;
1969 
1970  if (atom == JP2_CODESTREAM)
1971  return 1;
1972 
1973  if (bytestream2_get_bytes_left(&s->g) < atom_size || atom_end < atom_size)
1974  return 0;
1975 
1976  if (atom == JP2_HEADER &&
1977  atom_size >= 16) {
1978  uint32_t atom2_size, atom2, atom2_end;
1979  do {
1980  atom2_size = bytestream2_get_be32u(&s->g);
1981  atom2 = bytestream2_get_be32u(&s->g);
1982  atom2_end = bytestream2_tell(&s->g) + atom2_size - 8;
1983  if (atom2_size < 8 || atom2_end > atom_end || atom2_end < atom2_size)
1984  break;
1985  if (atom2 == JP2_CODESTREAM) {
1986  return 1;
1987  } else if (atom2 == MKBETAG('c','o','l','r') && atom2_size >= 7) {
1988  int method = bytestream2_get_byteu(&s->g);
1989  bytestream2_skipu(&s->g, 2);
1990  if (method == 1) {
1991  s->colour_space = bytestream2_get_be32u(&s->g);
1992  }
1993  } else if (atom2 == MKBETAG('p','c','l','r') && atom2_size >= 6) {
1994  int i, size, colour_count, colour_channels, colour_depth[3];
1995  uint32_t r, g, b;
1996  colour_count = bytestream2_get_be16u(&s->g);
1997  colour_channels = bytestream2_get_byteu(&s->g);
1998  // FIXME: Do not ignore channel_sign
1999  colour_depth[0] = (bytestream2_get_byteu(&s->g) & 0x7f) + 1;
2000  colour_depth[1] = (bytestream2_get_byteu(&s->g) & 0x7f) + 1;
2001  colour_depth[2] = (bytestream2_get_byteu(&s->g) & 0x7f) + 1;
2002  size = (colour_depth[0] + 7 >> 3) * colour_count +
2003  (colour_depth[1] + 7 >> 3) * colour_count +
2004  (colour_depth[2] + 7 >> 3) * colour_count;
2005  if (colour_count > 256 ||
2006  colour_channels != 3 ||
2007  colour_depth[0] > 16 ||
2008  colour_depth[1] > 16 ||
2009  colour_depth[2] > 16 ||
2010  atom2_size < size) {
2011  avpriv_request_sample(s->avctx, "Unknown palette");
2012  bytestream2_seek(&s->g, atom2_end, SEEK_SET);
2013  continue;
2014  }
2015  s->pal8 = 1;
2016  for (i = 0; i < colour_count; i++) {
2017  if (colour_depth[0] <= 8) {
2018  r = bytestream2_get_byteu(&s->g) << 8 - colour_depth[0];
2019  r |= r >> colour_depth[0];
2020  } else {
2021  r = bytestream2_get_be16u(&s->g) >> colour_depth[0] - 8;
2022  }
2023  if (colour_depth[1] <= 8) {
2024  g = bytestream2_get_byteu(&s->g) << 8 - colour_depth[1];
2025  r |= r >> colour_depth[1];
2026  } else {
2027  g = bytestream2_get_be16u(&s->g) >> colour_depth[1] - 8;
2028  }
2029  if (colour_depth[2] <= 8) {
2030  b = bytestream2_get_byteu(&s->g) << 8 - colour_depth[2];
2031  r |= r >> colour_depth[2];
2032  } else {
2033  b = bytestream2_get_be16u(&s->g) >> colour_depth[2] - 8;
2034  }
2035  s->palette[i] = 0xffu << 24 | r << 16 | g << 8 | b;
2036  }
2037  } else if (atom2 == MKBETAG('c','d','e','f') && atom2_size >= 2) {
2038  int n = bytestream2_get_be16u(&s->g);
2039  for (; n>0; n--) {
2040  int cn = bytestream2_get_be16(&s->g);
2041  int av_unused typ = bytestream2_get_be16(&s->g);
2042  int asoc = bytestream2_get_be16(&s->g);
2043  if (cn < 4 && asoc < 4)
2044  s->cdef[cn] = asoc;
2045  }
2046  }
2047  bytestream2_seek(&s->g, atom2_end, SEEK_SET);
2048  } while (atom_end - atom2_end >= 8);
2049  } else {
2050  search_range--;
2051  }
2052  bytestream2_seek(&s->g, atom_end, SEEK_SET);
2053  }
2054 
2055  return 0;
2056 }
2057 
2058 static av_cold int jpeg2000_decode_init(AVCodecContext *avctx)
2059 {
2060  Jpeg2000DecoderContext *s = avctx->priv_data;
2061 
2062  ff_jpeg2000dsp_init(&s->dsp);
2063 
2064  return 0;
2065 }
2066 
2067 static int jpeg2000_decode_frame(AVCodecContext *avctx, void *data,
2068  int *got_frame, AVPacket *avpkt)
2069 {
2070  Jpeg2000DecoderContext *s = avctx->priv_data;
2071  ThreadFrame frame = { .f = data };
2072  AVFrame *picture = data;
2073  int ret;
2074 
2075  s->avctx = avctx;
2076  bytestream2_init(&s->g, avpkt->data, avpkt->size);
2077  s->curtileno = -1;
2078  memset(s->cdef, -1, sizeof(s->cdef));
2079 
2080  if (bytestream2_get_bytes_left(&s->g) < 2) {
2081  ret = AVERROR_INVALIDDATA;
2082  goto end;
2083  }
2084 
2085  // check if the image is in jp2 format
2086  if (bytestream2_get_bytes_left(&s->g) >= 12 &&
2087  (bytestream2_get_be32u(&s->g) == 12) &&
2088  (bytestream2_get_be32u(&s->g) == JP2_SIG_TYPE) &&
2089  (bytestream2_get_be32u(&s->g) == JP2_SIG_VALUE)) {
2090  if (!jp2_find_codestream(s)) {
2091  av_log(avctx, AV_LOG_ERROR,
2092  "Could not find Jpeg2000 codestream atom.\n");
2093  ret = AVERROR_INVALIDDATA;
2094  goto end;
2095  }
2096  } else {
2097  bytestream2_seek(&s->g, 0, SEEK_SET);
2098  }
2099 
2100  while (bytestream2_get_bytes_left(&s->g) >= 3 && bytestream2_peek_be16(&s->g) != JPEG2000_SOC)
2101  bytestream2_skip(&s->g, 1);
2102 
2103  if (bytestream2_get_be16u(&s->g) != JPEG2000_SOC) {
2104  av_log(avctx, AV_LOG_ERROR, "SOC marker not present\n");
2105  ret = AVERROR_INVALIDDATA;
2106  goto end;
2107  }
2108  if (ret = jpeg2000_read_main_headers(s))
2109  goto end;
2110 
2111  /* get picture buffer */
2112  if ((ret = ff_thread_get_buffer(avctx, &frame, 0)) < 0)
2113  goto end;
2114  picture->pict_type = AV_PICTURE_TYPE_I;
2115  picture->key_frame = 1;
2116 
2117  if (ret = jpeg2000_read_bitstream_packets(s))
2118  goto end;
2119 
2120  avctx->execute2(avctx, jpeg2000_decode_tile, picture, NULL, s->numXtiles * s->numYtiles);
2121 
2122  jpeg2000_dec_cleanup(s);
2123 
2124  *got_frame = 1;
2125 
2126  if (s->avctx->pix_fmt == AV_PIX_FMT_PAL8)
2127  memcpy(picture->data[1], s->palette, 256 * sizeof(uint32_t));
2128 
2129  return bytestream2_tell(&s->g);
2130 
2131 end:
2132  jpeg2000_dec_cleanup(s);
2133  return ret;
2134 }
2135 
2136 static av_cold void jpeg2000_init_static_data(AVCodec *codec)
2137 {
2138  ff_jpeg2000_init_tier1_luts();
2139  ff_mqc_init_context_tables();
2140 }
2141 
2142 #define OFFSET(x) offsetof(Jpeg2000DecoderContext, x)
2143 #define VD AV_OPT_FLAG_VIDEO_PARAM | AV_OPT_FLAG_DECODING_PARAM
2144 
2145 static const AVOption options[] = {
2146  { "lowres", "Lower the decoding resolution by a power of two",
2147  OFFSET(reduction_factor), AV_OPT_TYPE_INT, { .i64 = 0 }, 0, JPEG2000_MAX_RESLEVELS - 1, VD },
2148  { NULL },
2149 };
2150 
2151 static const AVClass jpeg2000_class = {
2152  .class_name = "jpeg2000",
2153  .item_name = av_default_item_name,
2154  .option = options,
2155  .version = LIBAVUTIL_VERSION_INT,
2156 };
2157 
2158 AVCodec ff_jpeg2000_decoder = {
2159  .name = "jpeg2000",
2160  .long_name = NULL_IF_CONFIG_SMALL("JPEG 2000"),
2161  .type = AVMEDIA_TYPE_VIDEO,
2162  .id = AV_CODEC_ID_JPEG2000,
2163  .capabilities = AV_CODEC_CAP_SLICE_THREADS | AV_CODEC_CAP_FRAME_THREADS | AV_CODEC_CAP_DR1,
2164  .priv_data_size = sizeof(Jpeg2000DecoderContext),
2165  .init_static_data = jpeg2000_init_static_data,
2166  .init = jpeg2000_decode_init,
2167  .decode = jpeg2000_decode_frame,
2168  .priv_class = &jpeg2000_class,
2169  .max_lowres = 5,
2170  .profiles = NULL_IF_CONFIG_SMALL(ff_jpeg2000_profiles)
2171 };
AV_PIX_FMT_FLAG_PAL
#define AV_PIX_FMT_FLAG_PAL
Pixel format has a palette in data[1], values are indexes in this palette.
Definition: pixdesc.h:132
decode_clnpass
static void decode_clnpass(Jpeg2000DecoderContext *s, Jpeg2000T1Context *t1, int width, int height, int bpno, int bandno, int seg_symbols, int vert_causal_ctx_csty_symbol)
Definition: jpeg2000dec.c:1405
ff_mqc_initdec
void ff_mqc_initdec(MqcState *mqc, uint8_t *bp, int raw, int reset)
Initialize MQ-decoder.
Definition: mqcdec.c:71
Jpeg2000QuantStyle::nguardbits
uint8_t nguardbits
Definition: jpeg2000.h:153
NULL
#define NULL
Definition: coverity.c:32
JPEG2000_CBLK_VSC
#define JPEG2000_CBLK_VSC
Definition: jpeg2000.h:105
val
const char const char void * val
Definition: avisynth_c.h:634
Jpeg2000DSPContext::mct_decode
void(* mct_decode[FF_DWT_NB])(void *src0, void *src1, void *src2, int csize)
Definition: jpeg2000dsp.h:30
s
const char * s
Definition: avisynth_c.h:631
AVERROR_INVALIDDATA
#define AVERROR_INVALIDDATA
Invalid data found when processing input.
Definition: error.h:59
OFFSET
#define OFFSET(x)
Definition: jpeg2000dec.c:2142
ff_jpeg2000_init_tier1_luts
void av_cold ff_jpeg2000_init_tier1_luts(void)
Definition: jpeg2000.c:159
pix_fmt
static enum AVPixelFormat pix_fmt
Definition: demuxing_decoding.c:40
Jpeg2000DecoderContext::g
GetByteContext g
Definition: jpeg2000dec.c:91
ff_jpeg2000_cleanup
void ff_jpeg2000_cleanup(Jpeg2000Component *comp, Jpeg2000CodingStyle *codsty)
Definition: jpeg2000.c:576
Jpeg2000DecoderContext::avctx
AVCodecContext * avctx
Definition: jpeg2000dec.c:90
av_pix_fmt_desc_get
const AVPixFmtDescriptor * av_pix_fmt_desc_get(enum AVPixelFormat pix_fmt)
Definition: pixdesc.c:2222
AVFrame
This structure describes decoded (raw) audio or video data.
Definition: frame.h:184
jpeg2000_read_main_headers
static int jpeg2000_read_main_headers(Jpeg2000DecoderContext *s)
Definition: jpeg2000dec.c:1820
Jpeg2000Component::dwt
DWTContext dwt
Definition: jpeg2000.h:208
AVOption
AVOption.
Definition: opt.h:245
data
ptrdiff_t const GLvoid * data
Definition: opengl_enc.c:101
Jpeg2000Prec::cblkincl
Jpeg2000TgtNode * cblkincl
Definition: jpeg2000.h:184
HAD_COC
#define HAD_COC
Definition: jpeg2000dec.c:49
xyz_pix_fmts
static enum AVPixelFormat xyz_pix_fmts[]
Definition: jpeg2000dec.c:247
ff_jpeg2000dsp_init
av_cold void ff_jpeg2000dsp_init(Jpeg2000DSPContext *c)
Definition: jpeg2000dsp.c:93
JPEG2000_T1_SIG_NB
#define JPEG2000_T1_SIG_NB
Definition: jpeg2000.h:85
imgutils.h
misc image utilities
AV_LOG_WARNING
#define AV_LOG_WARNING
Something somehow does not look correct.
Definition: log.h:182
LIBAVUTIL_VERSION_INT
#define LIBAVUTIL_VERSION_INT
Definition: version.h:70
RGB_PIXEL_FORMATS
#define RGB_PIXEL_FORMATS
Definition: jpeg2000dec.c:229
JPEG2000_PGOD_PCRL
#define JPEG2000_PGOD_PCRL
Definition: jpeg2000.h:118
Jpeg2000Component::f_data
float * f_data
Definition: jpeg2000.h:209
g
const char * g
Definition: vf_curves.c:108
desc
const char * desc
Definition: nvenc.c:89
all_pix_fmts
static enum AVPixelFormat all_pix_fmts[]
Definition: jpeg2000dec.c:249
init
static av_cold int init(AVCodecContext *avctx)
Definition: avrndec.c:35
AV_OPT_TYPE_INT
Definition: opt.h:223
SP
static uint64_t SP[8][256]
Definition: camellia.c:40
AV_PIX_FMT_RGBA64
#define AV_PIX_FMT_RGBA64
Definition: pixfmt.h:331
decode_refpass
static void decode_refpass(Jpeg2000T1Context *t1, int width, int height, int bpno, int vert_causal_ctx_csty_symbol)
Definition: jpeg2000dec.c:1381
JPEG2000_PGOD_RLCP
#define JPEG2000_PGOD_RLCP
Definition: jpeg2000.h:116
jpeg2000_flush
static void jpeg2000_flush(Jpeg2000DecoderContext *s)
Definition: jpeg2000dec.c:144
JP2_CODESTREAM
#define JP2_CODESTREAM
Definition: jpeg2000dec.c:46
Jpeg2000DecoderContext::dsp
Jpeg2000DSPContext dsp
Definition: jpeg2000dec.c:119
AVPacket::size
int size
Definition: avcodec.h:1581
get_qcc
static int get_qcc(Jpeg2000DecoderContext *s, int n, Jpeg2000QuantStyle *q, uint8_t *properties)
Definition: jpeg2000dec.c:634
Jpeg2000Tile::qntsty
Jpeg2000QuantStyle qntsty[4]
Definition: jpeg2000dec.c:81
b
const char * b
Definition: vf_curves.c:109
mct_decode
static void mct_decode(Jpeg2000DecoderContext *s, Jpeg2000Tile *tile)
Definition: jpeg2000dec.c:1605
ff_mqc_init_contexts
void ff_mqc_init_contexts(MqcState *mqc)
MQ-coder context initialisations.
Definition: mqc.c:111
Jpeg2000Prec::nb_codeblocks_width
int nb_codeblocks_width
Definition: jpeg2000.h:181
av_log2
int av_log2(unsigned v)
Definition: intmath.c:26
AVCodecContext::pix_fmt
enum AVPixelFormat pix_fmt
Pixel format, see AV_PIX_FMT_xxx.
Definition: avcodec.h:1877
Jpeg2000QuantStyle::mant
uint16_t mant[JPEG2000_MAX_DECLEVELS *3]
Definition: jpeg2000.h:151
bytestream2_init
static av_always_inline void bytestream2_init(GetByteContext *g, const uint8_t *buf, int buf_size)
Definition: bytestream.h:133
Jpeg2000POC::is_default
int is_default
Definition: jpeg2000dec.c:66
jpeg2000_decode_init
static av_cold int jpeg2000_decode_init(AVCodecContext *avctx)
Definition: jpeg2000dec.c:2058
get_qcd
static int get_qcd(Jpeg2000DecoderContext *s, int n, Jpeg2000QuantStyle *q, uint8_t *properties)
Definition: jpeg2000dec.c:616
AVCodecContext::bits_per_raw_sample
int bits_per_raw_sample
Bits per sample/pixel of internal libavcodec pixel/sample format.
Definition: avcodec.h:3049
Jpeg2000POCEntry::CSpoc
uint16_t CSpoc
Definition: jpeg2000dec.c:56
init_tile
static int init_tile(Jpeg2000DecoderContext *s, int tileno)
Definition: jpeg2000dec.c:825
Jpeg2000DecoderContext::codsty
Jpeg2000CodingStyle codsty[4]
Definition: jpeg2000dec.c:110
AVCodecContext::profile
int profile
profile
Definition: avcodec.h:3153
AVCodec
AVCodec.
Definition: avcodec.h:3542
Jpeg2000Band::f_stepsize
float f_stepsize
Definition: jpeg2000.h:194
AVPixFmtDescriptor::log2_chroma_w
uint8_t log2_chroma_w
Amount to shift the luma width right to find the chroma width.
Definition: pixdesc.h:92
dequantization_int
static void dequantization_int(int x, int y, Jpeg2000Cblk *cblk, Jpeg2000Component *comp, Jpeg2000T1Context *t1, Jpeg2000Band *band)
Definition: jpeg2000dec.c:1571
get_cod
static int get_cod(Jpeg2000DecoderContext *s, Jpeg2000CodingStyle *c, uint8_t *properties)
Definition: jpeg2000dec.c:504
bytestream2_get_bufferu
static av_always_inline unsigned int bytestream2_get_bufferu(GetByteContext *g, uint8_t *dst, unsigned int size)
Definition: bytestream.h:273
attributes.h
Macro definitions for various function/variable attributes.
jpeg2000_read_bitstream_packets
static int jpeg2000_read_bitstream_packets(Jpeg2000DecoderContext *s)
Definition: jpeg2000dec.c:1939
rgb_pix_fmts
static enum AVPixelFormat rgb_pix_fmts[]
Definition: jpeg2000dec.c:244
Jpeg2000Cblk::npasses
uint8_t npasses
Definition: jpeg2000.h:164
band
Definition: af_biquads.c:76
AVClass::class_name
const char * class_name
The name of the class; usually it is the same name as the context structure type to which the AVClass...
Definition: log.h:72
Jpeg2000DecoderContext::palette
uint32_t palette[256]
Definition: jpeg2000dec.c:103
dequantization_float
static void dequantization_float(int x, int y, Jpeg2000Cblk *cblk, Jpeg2000Component *comp, Jpeg2000T1Context *t1, Jpeg2000Band *band)
Definition: jpeg2000dec.c:1556
jpeg2000_decode_frame
static int jpeg2000_decode_frame(AVCodecContext *avctx, void *data, int *got_frame, AVPacket *avpkt)
Definition: jpeg2000dec.c:2067
av_assert0
#define av_assert0(cond)
assert() equivalent, that is always enabled.
Definition: avassert.h:37
tile_codeblocks
static void tile_codeblocks(Jpeg2000DecoderContext *s, Jpeg2000Tile *tile)
Definition: jpeg2000dec.c:1633
avpriv_request_sample
void void avpriv_request_sample(void *avc, const char *msg,...) av_printf_format(2
Log a generic warning message about a missing feature.
AV_PIX_FMT_YUVA420P
planar YUV 4:2:0, 20bpp, (1 Cr & Cb sample per 2x2 Y & A samples)
Definition: pixfmt.h:102
AVPixFmtDescriptor::comp
AVComponentDescriptor comp[4]
Parameters that describe how pixels are packed.
Definition: pixdesc.h:117
uint8_t
uint8_t
Definition: audio_convert.c:194
av_cold
#define av_cold
Definition: attributes.h:82
JP2_SIG_VALUE
#define JP2_SIG_VALUE
Definition: jpeg2000dec.c:45
av_assert2
#define av_assert2(cond)
assert() equivalent, that does lie in speed critical code.
Definition: avassert.h:63
AV_PIX_FMT_PAL8
8 bits with AV_PIX_FMT_RGB32 palette
Definition: pixfmt.h:73
opt.h
AVOptions.
Jpeg2000Cblk::nb_lengthinc
uint8_t nb_lengthinc
Definition: jpeg2000.h:169
WRITE_FRAME
#define WRITE_FRAME(D, PIXEL)
Definition: jpeg2000dec.c:1696
end
static av_cold int end(AVCodecContext *avctx)
Definition: avrndec.c:90
thread.h
Multithreading support functions.
Jpeg2000Prec::zerobits
Jpeg2000TgtNode * zerobits
Definition: jpeg2000.h:183
FF_CODEC_PROPERTY_LOSSLESS
#define FF_CODEC_PROPERTY_LOSSLESS
Definition: avcodec.h:3472
Jpeg2000ResLevel::band
Jpeg2000Band * band
Definition: jpeg2000.h:203
tag_tree_decode
static int tag_tree_decode(Jpeg2000DecoderContext *s, Jpeg2000TgtNode *node, int threshold)
Definition: jpeg2000dec.c:152
Jpeg2000TgtNode::val
uint8_t val
Definition: jpeg2000.h:129
Jpeg2000Component::coord
int coord[2][2]
Definition: jpeg2000.h:211
frame
static AVFrame * frame
Definition: demuxing_decoding.c:53
height
#define height
AVPacket::data
uint8_t * data
Definition: avcodec.h:1580
GetByteContext::buffer
const uint8_t * buffer
Definition: bytestream.h:34
bytestream2_skipu
static av_always_inline void bytestream2_skipu(GetByteContext *g, unsigned int size)
Definition: bytestream.h:170
sp
#define sp
Definition: regdef.h:63
JPEG2000_T1_VIS
#define JPEG2000_T1_VIS
Definition: jpeg2000.h:95
size
ptrdiff_t size
Definition: opengl_enc.c:101
Jpeg2000POC::poc
Jpeg2000POCEntry poc[MAX_POCS]
Definition: jpeg2000dec.c:64
JPEG2000_T1_SIG_SE
#define JPEG2000_T1_SIG_SE
Definition: jpeg2000.h:83
get_tlm
static uint8_t get_tlm(Jpeg2000DecoderContext *s, int n)
Definition: jpeg2000dec.c:775
Jpeg2000T1Context::flags
uint16_t flags[6156]
Definition: jpeg2000.h:123
JPEG2000_CBLK_SEGSYM
#define JPEG2000_CBLK_SEGSYM
Definition: jpeg2000.h:107
av_log
#define av_log(a,...)
Definition: tableprint_vlc.h:28
Jpeg2000DecoderContext::tile
Jpeg2000Tile * tile
Definition: jpeg2000dec.c:118
Jpeg2000Cblk::nonzerobits
uint8_t nonzerobits
Definition: jpeg2000.h:166
Jpeg2000CodingStyle::log2_prec_widths
uint8_t log2_prec_widths[JPEG2000_MAX_RESLEVELS]
Definition: jpeg2000.h:145
get_poc
static int get_poc(Jpeg2000DecoderContext *s, int size, Jpeg2000POC *p)
Definition: jpeg2000dec.c:655
JPEG2000_CSTY_EPH
#define JPEG2000_CSTY_EPH
Definition: jpeg2000.h:112
U
#define U(x)
Definition: vp56_arith.h:37
Jpeg2000Cblk::nb_terminations
int nb_terminations
Definition: jpeg2000.h:173
jpeg2000_decode_packet
static int jpeg2000_decode_packet(Jpeg2000DecoderContext *s, Jpeg2000Tile *tile, int *tp_index, Jpeg2000CodingStyle *codsty, Jpeg2000ResLevel *rlevel, int precno, int layno, uint8_t *expn, int numgbits)
Definition: jpeg2000dec.c:897
AV_LOG_ERROR
#define AV_LOG_ERROR
Something went wrong and cannot losslessly be recovered.
Definition: log.h:176
td
#define td
Definition: regdef.h:70
getnpasses
static int getnpasses(Jpeg2000DecoderContext *s)
Definition: jpeg2000dec.c:871
AVPixFmtDescriptor::log2_chroma_h
uint8_t log2_chroma_h
Amount to shift the luma height right to find the chroma height.
Definition: pixdesc.h:101
mask
static const uint16_t mask[17]
Definition: lzw.c:38
PTRDIFF_SPECIFIER
#define PTRDIFF_SPECIFIER
Definition: internal.h:251
YUV_PIXEL_FORMATS
#define YUV_PIXEL_FORMATS
Definition: jpeg2000dec.c:231
ff_jpeg2000_set_significance
void ff_jpeg2000_set_significance(Jpeg2000T1Context *t1, int x, int y, int negative)
Definition: jpeg2000.c:171
av_default_item_name
av_default_item_name
Definition: libopenh264enc.c:68
AVERROR
#define AVERROR(e)
Definition: error.h:43
bytestream2_skip
static av_always_inline void bytestream2_skip(GetByteContext *g, unsigned int size)
Definition: bytestream.h:164
gray_pix_fmts
static enum AVPixelFormat gray_pix_fmts[]
Definition: jpeg2000dec.c:245
Jpeg2000Prec::nb_codeblocks_height
int nb_codeblocks_height
Definition: jpeg2000.h:182
NULL_IF_CONFIG_SMALL
#define NULL_IF_CONFIG_SMALL(x)
Return NULL if CONFIG_SMALL is true, otherwise the argument without modification. ...
Definition: internal.h:176
JPEG2000_PGOD_CPRL
#define JPEG2000_PGOD_CPRL
Definition: jpeg2000.h:119
r
const char * r
Definition: vf_curves.c:107
get_coc
static int get_coc(Jpeg2000DecoderContext *s, Jpeg2000CodingStyle *c, uint8_t *properties)
Definition: jpeg2000dec.c:541
AV_LOG_DEBUG
#define AV_LOG_DEBUG
Stuff which is only useful for libav* developers.
Definition: log.h:197
Jpeg2000CodingStyle::log2_prec_heights
uint8_t log2_prec_heights[JPEG2000_MAX_RESLEVELS]
Definition: jpeg2000.h:146
t1
#define t1
Definition: regdef.h:29
bytestream2_get_bytes_left
static av_always_inline unsigned int bytestream2_get_bytes_left(GetByteContext *g)
Definition: bytestream.h:154
AVCodecContext::flags
int flags
AV_CODEC_FLAG_*.
Definition: avcodec.h:1744
JPEG2000_MAX_PASSES
#define JPEG2000_MAX_PASSES
Definition: jpeg2000.h:73
AV_PIX_FMT_RGB48
#define AV_PIX_FMT_RGB48
Definition: pixfmt.h:327
avassert.h
simple assert() macros that are a bit more flexible than ISO C assert().
AVCodec::name
const char * name
Name of the codec implementation.
Definition: avcodec.h:3549
JPEG2000_CBLK_RESET
#define JPEG2000_CBLK_RESET
Definition: jpeg2000.h:103
get_plt
static uint8_t get_plt(Jpeg2000DecoderContext *s, int n)
Definition: jpeg2000dec.c:809
Jpeg2000Prec::cblk
Jpeg2000Cblk * cblk
Definition: jpeg2000.h:185
FFMAX
#define FFMAX(a, b)
Definition: common.h:94
Jpeg2000TilePart::tile_index
uint8_t tile_index
Definition: jpeg2000dec.c:70
Jpeg2000CodingStyle::cblk_style
uint8_t cblk_style
Definition: jpeg2000.h:143
AV_CODEC_CAP_FRAME_THREADS
#define AV_CODEC_CAP_FRAME_THREADS
Codec supports frame-level multithreading.
Definition: avcodec.h:1019
JPEG2000_SOP_FIXED_BYTES
#define JPEG2000_SOP_FIXED_BYTES
Definition: jpeg2000.h:61
get_cox
static int get_cox(Jpeg2000DecoderContext *s, Jpeg2000CodingStyle *c)
Definition: jpeg2000dec.c:429
jpeg2000_class
static const AVClass jpeg2000_class
Definition: jpeg2000dec.c:2151
JPEG2000_T1_REF
#define JPEG2000_T1_REF
Definition: jpeg2000.h:97
AVPixFmtDescriptor::flags
uint64_t flags
Combination of AV_PIX_FMT_FLAG_...
Definition: pixdesc.h:106
av_image_check_size
int av_image_check_size(unsigned int w, unsigned int h, int log_offset, void *log_ctx)
Check if the given dimension of an image is valid, meaning that all bytes of the image can be address...
Definition: imgutils.c:251
Jpeg2000Cblk::lblock
uint8_t lblock
Definition: jpeg2000.h:170
AVPixFmtDescriptor::nb_components
uint8_t nb_components
The number of components each pixel has, (1-4)
Definition: pixdesc.h:83
JP2_SIG_TYPE
#define JP2_SIG_TYPE
Definition: jpeg2000dec.c:44
AV_PICTURE_TYPE_I
Intra.
Definition: avutil.h:266
AVFrame::pict_type
enum AVPictureType pict_type
Picture type of the frame.
Definition: frame.h:258
AV_CODEC_FLAG_BITEXACT
#define AV_CODEC_FLAG_BITEXACT
Use only bitexact stuff (except (I)DCT).
Definition: avcodec.h:883
AV_PIX_FMT_GRAY16
#define AV_PIX_FMT_GRAY16
Definition: pixfmt.h:325
av_assert1
#define av_assert1(cond)
assert() equivalent, that does not lie in speed critical code.
Definition: avassert.h:53
FFMIN
#define FFMIN(a, b)
Definition: common.h:96
Jpeg2000Cblk::data
uint8_t data[8192]
Definition: jpeg2000.h:172
Jpeg2000TgtNode::parent
struct Jpeg2000TgtNode * parent
Definition: jpeg2000.h:131
JPEG2000_T1_SGN_S
#define JPEG2000_T1_SGN_S
Definition: jpeg2000.h:91
width
#define width
AVCodecContext::width
int width
picture width / height.
Definition: avcodec.h:1836
jpeg2000.h
JPEG 2000 structures and defines common to encoder and decoder.
Jpeg2000Band::i_stepsize
int i_stepsize
Definition: jpeg2000.h:193
Jpeg2000Cblk::nb_terminationsinc
int nb_terminationsinc
Definition: jpeg2000.h:174
JPEG2000_MAX_RESLEVELS
#define JPEG2000_MAX_RESLEVELS
Definition: jpeg2000.h:71
int32_t
int32_t
Definition: audio_convert.c:194
needs_termination
static int needs_termination(int style, int passno)
Definition: jpeg2000.h:274
HAD_QCC
#define HAD_QCC
Definition: jpeg2000dec.c:50
MQC_CX_RL
#define MQC_CX_RL
Definition: mqc.h:34
FFABS
#define FFABS(a)
Absolute value, Note, INT_MIN / INT64_MIN result in undefined behavior as they are not representable ...
Definition: common.h:72
jpeg2000_init_static_data
static av_cold void jpeg2000_init_static_data(AVCodec *codec)
Definition: jpeg2000dec.c:2136
ff_jpeg2000_getsigctxno
static int ff_jpeg2000_getsigctxno(int flag, int bandno)
Definition: jpeg2000.h:240
VD
#define VD
Definition: jpeg2000dec.c:2143
n
int n
Definition: avisynth_c.h:547
FF_PROFILE_JPEG2000_DCINEMA_4K
#define FF_PROFILE_JPEG2000_DCINEMA_4K
Definition: avcodec.h:3225
JPEG2000_MAX_DECLEVELS
#define JPEG2000_MAX_DECLEVELS
Definition: jpeg2000.h:70
jpeg2000_decode_packets_po_iteration
static int jpeg2000_decode_packets_po_iteration(Jpeg2000DecoderContext *s, Jpeg2000Tile *tile, int RSpoc, int CSpoc, int LYEpoc, int REpoc, int CEpoc, int Ppoc, int *tp_index)
Definition: jpeg2000dec.c:1042
Jpeg2000Tile::tile_part
Jpeg2000TilePart tile_part[256]
Definition: jpeg2000dec.c:83
src
#define src
Definition: vp9dsp.c:530
get_siz
static int get_siz(Jpeg2000DecoderContext *s)
Definition: jpeg2000dec.c:256
Jpeg2000Cblk::coord
int coord[2][2]
Definition: jpeg2000.h:177
JP2_HEADER
#define JP2_HEADER
Definition: jpeg2000dec.c:47
FF_ARRAY_ELEMS
#define FF_ARRAY_ELEMS(a)
Definition: sinewin_tablegen_template.c:36
Jpeg2000Cblk::lengthinc
uint16_t lengthinc[JPEG2000_MAX_PASSES]
Definition: jpeg2000.h:168
JPEG2000_PGOD_RPCL
#define JPEG2000_PGOD_RPCL
Definition: jpeg2000.h:117
ff_jpeg2000_ceildivpow2
static int ff_jpeg2000_ceildivpow2(int a, int b)
Definition: jpeg2000.h:216
Jpeg2000Band::coord
int coord[2][2]
Definition: jpeg2000.h:191
AVERROR_PATCHWELCOME
#define AVERROR_PATCHWELCOME
Not yet implemented in FFmpeg, patches welcome.
Definition: error.h:62
AV_CODEC_CAP_SLICE_THREADS
#define AV_CODEC_CAP_SLICE_THREADS
Codec supports slice-based (or partition-based) multithreading.
Definition: avcodec.h:1023
bytestream2_tell
static av_always_inline int bytestream2_tell(GetByteContext *g)
Definition: bytestream.h:188
AVFrame::format
int format
format of the frame, -1 if unknown or unset Values correspond to enum AVPixelFormat for video frames...
Definition: frame.h:248
Jpeg2000TilePart::tpg
GetByteContext tpg
Definition: jpeg2000dec.c:72
Jpeg2000Tile::tp_idx
uint16_t tp_idx
Definition: jpeg2000dec.c:84
Jpeg2000Cblk::data_start
int data_start[JPEG2000_MAX_PASSES]
Definition: jpeg2000.h:175
Jpeg2000Component::coord_o
int coord_o[2][2]
Definition: jpeg2000.h:212
avcodec.h
Libavcodec external API header.
yuv_pix_fmts
static enum AVPixelFormat yuv_pix_fmts[]
Definition: jpeg2000dec.c:246
byte
uint64_t_TMPL AV_WL64 unsigned int_TMPL AV_WL32 unsigned int_TMPL AV_WL24 unsigned int_TMPL AV_WL16 uint64_t_TMPL AV_WB64 unsigned int_TMPL AV_WB32 unsigned int_TMPL AV_WB24 unsigned int_TMPL AV_WB16 unsigned int_TMPL byte
Definition: bytestream.h:87
ff_mqc_decode
int ff_mqc_decode(MqcState *mqc, uint8_t *cxstate)
MQ decoder.
Definition: mqcdec.c:93
Jpeg2000POCEntry::LYEpoc
uint16_t LYEpoc
Definition: jpeg2000dec.c:55
AVPixFmtDescriptor
Descriptor that unambiguously describes how the bits of a pixel are stored in the up to 4 data planes...
Definition: pixdesc.h:81
ff_thread_get_buffer
int ff_thread_get_buffer(AVCodecContext *avctx, ThreadFrame *f, int flags)
Wrapper around get_buffer() for frame-multithreaded codecs.
Definition: pthread_frame.c:841
AVCodecContext
main external API structure.
Definition: avcodec.h:1649
ff_jpeg2000_decoder
AVCodec ff_jpeg2000_decoder
Definition: jpeg2000dec.c:2158
pix_fmt_match
static int pix_fmt_match(enum AVPixelFormat pix_fmt, int components, int bpc, uint32_t log2_chroma_wh, int pal8)
Definition: jpeg2000dec.c:192
Jpeg2000TgtNode::vis
uint8_t vis
Definition: jpeg2000.h:130
Jpeg2000Tile::coord
int coord[2][2]
Definition: jpeg2000dec.c:85
Jpeg2000ResLevel::log2_prec_height
uint8_t log2_prec_height
Definition: jpeg2000.h:202
ff_mqc_init_context_tables
void av_cold ff_mqc_init_context_tables(void)
MQ-coder Initialize context tables (QE, NLPS, NMPS)
Definition: mqc.c:97
Jpeg2000Cblk::length
uint16_t length
Definition: jpeg2000.h:167
Jpeg2000Tile::properties
uint8_t properties[4]
Definition: jpeg2000dec.c:79
AVERROR_BUG
#define AVERROR_BUG
Internal bug, also see AVERROR_BUG2.
Definition: error.h:50
getlblockinc
static int getlblockinc(Jpeg2000DecoderContext *s)
Definition: jpeg2000dec.c:886
AV_PIX_FMT_XYZ12
#define AV_PIX_FMT_XYZ12
Definition: pixfmt.h:381
AVClass
Describe the class of an AVClass context structure.
Definition: log.h:67
Jpeg2000ResLevel::nbands
uint8_t nbands
Definition: jpeg2000.h:199
Jpeg2000TilePart::tp_end
const uint8_t * tp_end
Definition: jpeg2000dec.c:71
Jpeg2000Prec::decoded_layers
int decoded_layers
Definition: jpeg2000.h:186
JPEG2000_SOP_BYTE_LENGTH
#define JPEG2000_SOP_BYTE_LENGTH
Definition: jpeg2000.h:62
options
static const AVOption options[]
Definition: jpeg2000dec.c:2145
u
#define u(width,...)
Definition: vaapi_encode_h26x.h:36
JPEG2000_T1_SIG_S
#define JPEG2000_T1_SIG_S
Definition: jpeg2000.h:80
Jpeg2000Component::reslevel
Jpeg2000ResLevel * reslevel
Definition: jpeg2000.h:207
ff_jpeg2000_ceildiv
static int ff_jpeg2000_ceildiv(int a, int b)
Definition: jpeg2000.h:221
Jpeg2000Tile::comp
Jpeg2000Component * comp
Definition: j2kenc.c:100
SIZE_SPECIFIER
#define SIZE_SPECIFIER
Definition: internal.h:252
AV_CODEC_ID_JPEG2000
Definition: avcodec.h:283
AVFrame::data
uint8_t * data[AV_NUM_DATA_POINTERS]
pointer to the picture/channel planes.
Definition: frame.h:198
Jpeg2000QuantStyle::expn
uint8_t expn[JPEG2000_MAX_DECLEVELS *3]
Definition: jpeg2000.h:150
jpeg2000_decode_packets
static int jpeg2000_decode_packets(Jpeg2000DecoderContext *s, Jpeg2000Tile *tile)
Definition: jpeg2000dec.c:1314
get_sot
static int get_sot(Jpeg2000DecoderContext *s, int n)
Definition: jpeg2000dec.c:717
decode
static int decode(AVCodecContext *avctx, void *data, int *got_sub, AVPacket *avpkt)
Definition: ccaption_dec.c:722
jp2_find_codestream
static int jp2_find_codestream(Jpeg2000DecoderContext *s)
Definition: jpeg2000dec.c:1958
profiles
static const AVProfile profiles[]
Definition: libfaac.c:216
jpeg2000_dec_cleanup
static void jpeg2000_dec_cleanup(Jpeg2000DecoderContext *s)
Definition: jpeg2000dec.c:1797
decode_sigpass
static void decode_sigpass(Jpeg2000T1Context *t1, int width, int height, int bpno, int bandno, int vert_causal_ctx_csty_symbol)
Definition: jpeg2000dec.c:1351
Jpeg2000CodingStyle::prog_order
uint8_t prog_order
Definition: jpeg2000.h:144
Jpeg2000Tile::poc
Jpeg2000POC poc
Definition: jpeg2000dec.c:82
dequantization_int_97
static void dequantization_int_97(int x, int y, Jpeg2000Cblk *cblk, Jpeg2000Component *comp, Jpeg2000T1Context *t1, Jpeg2000Band *band)
Definition: jpeg2000dec.c:1591
Jpeg2000QuantStyle::quantsty
uint8_t quantsty
Definition: jpeg2000.h:152
internal.h
common internal api header.
common.h
common internal and external API header
Jpeg2000CodingStyle::log2_cblk_width
uint8_t log2_cblk_width
Definition: jpeg2000.h:137
c
static double c[64]
Definition: vsrc_mptestsrc.c:87
Jpeg2000DecoderContext::qntsty
Jpeg2000QuantStyle qntsty[4]
Definition: jpeg2000dec.c:111
ff_dwt_decode
int ff_dwt_decode(DWTContext *s, void *t)
Definition: jpeg2000dwt.c:599
Jpeg2000T1Context::data
int data[6144]
Definition: jpeg2000.h:122
XYZ_PIXEL_FORMATS
#define XYZ_PIXEL_FORMATS
Definition: jpeg2000dec.c:242
GRAY_PIXEL_FORMATS
#define GRAY_PIXEL_FORMATS
Definition: jpeg2000dec.c:230
AVCodecContext::properties
unsigned properties
Definition: avcodec.h:3471
MKBETAG
#define MKBETAG(a, b, c, d)
Definition: common.h:343
JPEG2000_CBLK_BYPASS
#define JPEG2000_CBLK_BYPASS
Definition: jpeg2000.h:102
MQC_CX_UNI
#define MQC_CX_UNI
Definition: mqc.h:33
AVCodecContext::priv_data
void * priv_data
Definition: avcodec.h:1691
ff_jpeg2000_init_component
int ff_jpeg2000_init_component(Jpeg2000Component *comp, Jpeg2000CodingStyle *codsty, Jpeg2000QuantStyle *qntsty, int cbps, int dx, int dy, AVCodecContext *avctx)
Definition: jpeg2000.c:448
JPEG2000_T1_SIG_SW
#define JPEG2000_T1_SIG_SW
Definition: jpeg2000.h:84
JPEG2000_PGOD_LRCP
#define JPEG2000_PGOD_LRCP
Definition: jpeg2000.h:115
get_bits
static int get_bits(Jpeg2000DecoderContext *s, int n)
Definition: jpeg2000dec.c:129
MAX_POCS
#define MAX_POCS
Definition: jpeg2000dec.c:52
len
int len
Definition: vorbis_enc_data.h:452
AVCodecContext::execute2
int(* execute2)(struct AVCodecContext *c, int(*func)(struct AVCodecContext *c2, void *arg, int jobnr, int threadnr), void *arg2, int *ret, int count)
The codec may call this to execute several independent things.
Definition: avcodec.h:3139
MqcState::raw
int raw
Definition: mqc.h:46
tmp
static uint8_t tmp[8]
Definition: des.c:38
FF_PROFILE_JPEG2000_DCINEMA_2K
#define FF_PROFILE_JPEG2000_DCINEMA_2K
Definition: avcodec.h:3224
AVFrame::key_frame
int key_frame
1 -> keyframe, 0-> not
Definition: frame.h:253
Jpeg2000Band::prec
Jpeg2000Prec * prec
Definition: jpeg2000.h:195
bytestream2_seek
static av_always_inline int bytestream2_seek(GetByteContext *g, int offset, int whence)
Definition: bytestream.h:208
JPEG2000_T1_SIG
#define JPEG2000_T1_SIG
Definition: jpeg2000.h:96
av_mallocz_array
static void * av_mallocz_array(size_t nmemb, size_t size)
Definition: mem.h:229
av_freep
#define av_freep(p)
Definition: tableprint_vlc.h:35
comp
static void comp(unsigned char *dst, int dst_stride, unsigned char *src, int src_stride, int add)
Definition: eamad.c:83
Jpeg2000T1Context::mqc
MqcState mqc
Definition: jpeg2000.h:124
AVMEDIA_TYPE_VIDEO
Definition: avutil.h:193
ff_jpeg2000_getrefctxno
static int ff_jpeg2000_getrefctxno(int flag)
Definition: jpeg2000.h:249
JPEG2000_CSTY_PREC
#define JPEG2000_CSTY_PREC
Definition: jpeg2000.h:110
Jpeg2000CodingStyle::log2_cblk_height
uint8_t log2_cblk_height
Definition: jpeg2000.h:137
Jpeg2000POCEntry::CEpoc
uint16_t CEpoc
Definition: jpeg2000dec.c:57
MqcState::bp
uint8_t * bp
Definition: mqc.h:41
Jpeg2000ResLevel::log2_prec_width
uint8_t log2_prec_width
Definition: jpeg2000.h:202
AVComponentDescriptor::depth
int depth
Number of bits in the component.
Definition: pixdesc.h:58
AVPixelFormat
AVPixelFormat
Pixel format.
Definition: pixfmt.h:60
AVPacket
This structure stores compressed data.
Definition: avcodec.h:1557
get_qcx
static int get_qcx(Jpeg2000DecoderContext *s, int n, Jpeg2000QuantStyle *q)
Definition: jpeg2000dec.c:571
av_mallocz
void * av_mallocz(size_t size)
Allocate a block of size bytes with alignment suitable for all memory accesses (including vectors if ...
Definition: mem.c:252
AV_CODEC_CAP_DR1
#define AV_CODEC_CAP_DR1
Codec uses get_buffer() for allocating buffers and supports custom allocators.
Definition: avcodec.h:956
Jpeg2000Tile::codsty
Jpeg2000CodingStyle codsty[4]
Definition: jpeg2000dec.c:80
decode_cblk
static int decode_cblk(Jpeg2000DecoderContext *s, Jpeg2000CodingStyle *codsty, Jpeg2000T1Context *t1, Jpeg2000Cblk *cblk, int width, int height, int bandpos)
Definition: jpeg2000dec.c:1471
MqcState::cx_states
uint8_t cx_states[19]
Definition: mqc.h:45
av_unused
#define av_unused
Definition: attributes.h:126
ff_jpeg2000_profiles
const AVProfile ff_jpeg2000_profiles[]
Definition: profiles.c:74
ff_jpeg2000_getsgnctxno
static int ff_jpeg2000_getsgnctxno(int flag, int *xorbit)
Definition: jpeg2000.h:258
jpeg2000_decode_tile
static int jpeg2000_decode_tile(AVCodecContext *avctx, void *td, int jobnr, int threadnr)
Definition: jpeg2000dec.c:1758
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