Libav
jpeg2000.c
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1 /*
2  * JPEG 2000 encoder and decoder common functions
3  * Copyright (c) 2007 Kamil Nowosad
4  * Copyright (c) 2013 Nicolas Bertrand <nicoinattendu@gmail.com>
5  *
6  * This file is part of Libav.
7  *
8  * Libav is free software; you can redistribute it and/or
9  * modify it under the terms of the GNU Lesser General Public
10  * License as published by the Free Software Foundation; either
11  * version 2.1 of the License, or (at your option) any later version.
12  *
13  * Libav is distributed in the hope that it will be useful,
14  * but WITHOUT ANY WARRANTY; without even the implied warranty of
15  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
16  * Lesser General Public License for more details.
17  *
18  * You should have received a copy of the GNU Lesser General Public
19  * License along with Libav; if not, write to the Free Software
20  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
21  */
22 
28 #include "libavutil/attributes.h"
29 #include "libavutil/common.h"
30 #include "libavutil/mem.h"
31 #include "avcodec.h"
32 #include "jpeg2000.h"
33 
34 #define SHL(a, n) ((n) >= 0 ? (a) << (n) : (a) >> -(n))
35 
36 /* tag tree routines */
37 
38 /* allocate the memory for tag tree */
39 static int32_t tag_tree_size(uint16_t w, uint16_t h)
40 {
41  uint32_t res = 0;
42  while (w > 1 || h > 1) {
43  res += w * h;
44  if (res + 1 >= INT32_MAX)
45  return -1;
46  w = (w + 1) >> 1;
47  h = (h + 1) >> 1;
48  }
49  return (int32_t)(res + 1);
50 }
51 
53 {
54  int pw = w, ph = h;
55  Jpeg2000TgtNode *res, *t, *t2;
56  int32_t tt_size;
57 
58  tt_size = tag_tree_size(w, h);
59  if (tt_size == -1)
60  return NULL;
61 
62  t = res = av_mallocz_array(tt_size, sizeof(*t));
63  if (!res)
64  return NULL;
65 
66  while (w > 1 || h > 1) {
67  int i, j;
68  pw = w;
69  ph = h;
70 
71  w = (w + 1) >> 1;
72  h = (h + 1) >> 1;
73  t2 = t + pw * ph;
74 
75  for (i = 0; i < ph; i++)
76  for (j = 0; j < pw; j++)
77  t[i * pw + j].parent = &t2[(i >> 1) * w + (j >> 1)];
78 
79  t = t2;
80  }
81  t[0].parent = NULL;
82  return res;
83 }
84 
86 
87 static int getsigctxno(int flag, int bandno)
88 {
89  int h, v, d;
90 
91  h = ((flag & JPEG2000_T1_SIG_E) ? 1 : 0) +
92  ((flag & JPEG2000_T1_SIG_W) ? 1 : 0);
93  v = ((flag & JPEG2000_T1_SIG_N) ? 1 : 0) +
94  ((flag & JPEG2000_T1_SIG_S) ? 1 : 0);
95  d = ((flag & JPEG2000_T1_SIG_NE) ? 1 : 0) +
96  ((flag & JPEG2000_T1_SIG_NW) ? 1 : 0) +
97  ((flag & JPEG2000_T1_SIG_SE) ? 1 : 0) +
98  ((flag & JPEG2000_T1_SIG_SW) ? 1 : 0);
99  if (bandno < 3) {
100  if (bandno == 1)
101  FFSWAP(int, h, v);
102  if (h == 2)
103  return 8;
104  if (h == 1) {
105  if (v >= 1)
106  return 7;
107  if (d >= 1)
108  return 6;
109  return 5;
110  }
111  if (v == 2)
112  return 4;
113  if (v == 1)
114  return 3;
115  if (d >= 2)
116  return 2;
117  if (d == 1)
118  return 1;
119  } else {
120  if (d >= 3)
121  return 8;
122  if (d == 2) {
123  if (h + v >= 1)
124  return 7;
125  return 6;
126  }
127  if (d == 1) {
128  if (h + v >= 2)
129  return 5;
130  if (h + v == 1)
131  return 4;
132  return 3;
133  }
134  if (h + v >= 2)
135  return 2;
136  if (h + v == 1)
137  return 1;
138  }
139  return 0;
140 }
141 
143 
144 static const int contribtab[3][3] = { { 0, -1, 1 }, { -1, -1, 0 }, { 1, 0, 1 } };
145 static const int ctxlbltab[3][3] = { { 13, 12, 11 }, { 10, 9, 10 }, { 11, 12, 13 } };
146 static const int xorbittab[3][3] = { { 1, 1, 1 }, { 1, 0, 0 }, { 0, 0, 0 } };
147 
148 static int getsgnctxno(int flag, uint8_t *xorbit)
149 {
150  int vcontrib, hcontrib;
151 
152  hcontrib = contribtab[flag & JPEG2000_T1_SIG_E ? flag & JPEG2000_T1_SGN_E ? 1 : 2 : 0]
153  [flag & JPEG2000_T1_SIG_W ? flag & JPEG2000_T1_SGN_W ? 1 : 2 : 0] + 1;
154  vcontrib = contribtab[flag & JPEG2000_T1_SIG_S ? flag & JPEG2000_T1_SGN_S ? 1 : 2 : 0]
155  [flag & JPEG2000_T1_SIG_N ? flag & JPEG2000_T1_SGN_N ? 1 : 2 : 0] + 1;
156  *xorbit = xorbittab[hcontrib][vcontrib];
157 
158  return ctxlbltab[hcontrib][vcontrib];
159 }
160 
162 {
163  int i, j;
164  for (i = 0; i < 256; i++)
165  for (j = 0; j < 4; j++)
167  for (i = 0; i < 16; i++)
168  for (j = 0; j < 16; j++)
170  getsgnctxno(i + (j << 8), &ff_jpeg2000_xorbit_lut[i][j]);
171 }
172 
174  int negative)
175 {
176  x++;
177  y++;
178  t1->flags[y][x] |= JPEG2000_T1_SIG;
179  if (negative) {
180  t1->flags[y][x + 1] |= JPEG2000_T1_SIG_W | JPEG2000_T1_SGN_W;
181  t1->flags[y][x - 1] |= JPEG2000_T1_SIG_E | JPEG2000_T1_SGN_E;
182  t1->flags[y + 1][x] |= JPEG2000_T1_SIG_N | JPEG2000_T1_SGN_N;
183  t1->flags[y - 1][x] |= JPEG2000_T1_SIG_S | JPEG2000_T1_SGN_S;
184  } else {
185  t1->flags[y][x + 1] |= JPEG2000_T1_SIG_W;
186  t1->flags[y][x - 1] |= JPEG2000_T1_SIG_E;
187  t1->flags[y + 1][x] |= JPEG2000_T1_SIG_N;
188  t1->flags[y - 1][x] |= JPEG2000_T1_SIG_S;
189  }
190  t1->flags[y + 1][x + 1] |= JPEG2000_T1_SIG_NW;
191  t1->flags[y + 1][x - 1] |= JPEG2000_T1_SIG_NE;
192  t1->flags[y - 1][x + 1] |= JPEG2000_T1_SIG_SW;
193  t1->flags[y - 1][x - 1] |= JPEG2000_T1_SIG_SE;
194 }
195 
196 static const uint8_t lut_gain[2][4] = { { 0, 0, 0, 0 }, { 0, 1, 1, 2 } };
197 
199  Jpeg2000Band *band,
200  Jpeg2000CodingStyle *codsty,
201  Jpeg2000QuantStyle *qntsty,
202  int bandno, int gbandno, int reslevelno,
203  int cbps)
204 {
205  /* TODO: Implementation of quantization step not finished,
206  * see ISO/IEC 15444-1:2002 E.1 and A.6.4. */
207  switch (qntsty->quantsty) {
208  uint8_t gain;
209  int numbps;
210  case JPEG2000_QSTY_NONE:
211  /* TODO: to verify. No quantization in this case */
212  band->f_stepsize = 1;
213  break;
214  case JPEG2000_QSTY_SI:
215  /*TODO: Compute formula to implement. */
216  numbps = cbps +
217  lut_gain[codsty->transform == FF_DWT53][bandno + (reslevelno > 0)];
218  band->f_stepsize = SHL(2048 + qntsty->mant[gbandno],
219  2 + numbps - qntsty->expn[gbandno]);
220  break;
221  case JPEG2000_QSTY_SE:
222  /* Exponent quantization step.
223  * Formula:
224  * delta_b = 2 ^ (R_b - expn_b) * (1 + (mant_b / 2 ^ 11))
225  * R_b = R_I + log2 (gain_b )
226  * see ISO/IEC 15444-1:2002 E.1.1 eqn. E-3 and E-4 */
227  /* TODO/WARN: value of log2 (gain_b ) not taken into account
228  * but it works (compared to OpenJPEG). Why?
229  * Further investigation needed. */
230  gain = cbps;
231  band->f_stepsize = pow(2.0, gain - qntsty->expn[gbandno]);
232  band->f_stepsize *= qntsty->mant[gbandno] / 2048.0 + 1.0;
233  break;
234  default:
235  band->f_stepsize = 0;
236  av_log(avctx, AV_LOG_ERROR, "Unknown quantization format\n");
237  break;
238  }
239  /* FIXME: In OpenJPEG code stespize = stepsize * 0.5. Why?
240  * If not set output of entropic decoder is not correct. */
241  if (!av_codec_is_encoder(avctx->codec))
242  band->f_stepsize *= 0.5;
243 
244  band->i_stepsize = band->f_stepsize * (1 << 16);
245 }
246 
247 static int init_prec(Jpeg2000Band *band,
248  Jpeg2000ResLevel *reslevel,
250  int precno, int bandno, int reslevelno,
251  int log2_band_prec_width,
252  int log2_band_prec_height)
253 {
254  Jpeg2000Prec *prec = band->prec + precno;
255  int nb_codeblocks, cblkno;
256 
257  /* TODO: Explain formula for JPEG200 DCINEMA. */
258  /* TODO: Verify with previous count of codeblocks per band */
259 
260  /* Compute P_x0 */
261  prec->coord[0][0] = (precno % reslevel->num_precincts_x) *
262  (1 << log2_band_prec_width);
263  prec->coord[0][0] = FFMAX(prec->coord[0][0], band->coord[0][0]);
264 
265  /* Compute P_y0 */
266  prec->coord[1][0] = (precno / reslevel->num_precincts_x) *
267  (1 << log2_band_prec_height);
268  prec->coord[1][0] = FFMAX(prec->coord[1][0], band->coord[1][0]);
269 
270  /* Compute P_x1 */
271  prec->coord[0][1] = prec->coord[0][0] +
272  (1 << log2_band_prec_width);
273  prec->coord[0][1] = FFMIN(prec->coord[0][1], band->coord[0][1]);
274 
275  /* Compute P_y1 */
276  prec->coord[1][1] = prec->coord[1][0] +
277  (1 << log2_band_prec_height);
278  prec->coord[1][1] = FFMIN(prec->coord[1][1], band->coord[1][1]);
279 
280  prec->nb_codeblocks_width =
281  ff_jpeg2000_ceildivpow2(prec->coord[0][1] -
282  prec->coord[0][0],
283  band->log2_cblk_width);
284  prec->nb_codeblocks_height =
285  ff_jpeg2000_ceildivpow2(prec->coord[1][1] -
286  prec->coord[1][0],
287  band->log2_cblk_height);
288 
289  /* Tag trees initialization */
290  prec->cblkincl =
292  prec->nb_codeblocks_height);
293  if (!prec->cblkincl)
294  return AVERROR(ENOMEM);
295 
296  prec->zerobits =
298  prec->nb_codeblocks_height);
299  if (!prec->zerobits)
300  return AVERROR(ENOMEM);
301 
302  nb_codeblocks = prec->nb_codeblocks_width * prec->nb_codeblocks_height;
303  prec->cblk = av_mallocz_array(nb_codeblocks, sizeof(*prec->cblk));
304  if (!prec->cblk)
305  return AVERROR(ENOMEM);
306  for (cblkno = 0; cblkno < nb_codeblocks; cblkno++) {
307  Jpeg2000Cblk *cblk = prec->cblk + cblkno;
308  uint16_t Cx0, Cy0;
309 
310  /* Compute coordinates of codeblocks */
311  /* Compute Cx0*/
312  Cx0 = (prec->coord[0][0] >> band->log2_cblk_width) << band->log2_cblk_width;
313  Cx0 = Cx0 + ((cblkno % prec->nb_codeblocks_width) << band->log2_cblk_width);
314  cblk->coord[0][0] = FFMAX(Cx0, prec->coord[0][0]);
315 
316  /* Compute Cy0*/
317  Cy0 = (prec->coord[1][0] >> band->log2_cblk_height) << band->log2_cblk_height;
318  Cy0 = Cy0 + ((cblkno / prec->nb_codeblocks_width) << band->log2_cblk_height);
319  cblk->coord[1][0] = FFMAX(Cy0, prec->coord[1][0]);
320 
321  /* Compute Cx1 */
322  cblk->coord[0][1] = FFMIN(Cx0 + (1 << band->log2_cblk_width),
323  prec->coord[0][1]);
324 
325  /* Compute Cy1 */
326  cblk->coord[1][1] = FFMIN(Cy0 + (1 << band->log2_cblk_height),
327  prec->coord[1][1]);
328  /* Update code-blocks coordinates according sub-band position */
329  if ((bandno + !!reslevelno) & 1) {
330  cblk->coord[0][0] += comp->reslevel[reslevelno-1].coord[0][1] -
331  comp->reslevel[reslevelno-1].coord[0][0];
332  cblk->coord[0][1] += comp->reslevel[reslevelno-1].coord[0][1] -
333  comp->reslevel[reslevelno-1].coord[0][0];
334  }
335  if ((bandno + !!reslevelno) & 2) {
336  cblk->coord[1][0] += comp->reslevel[reslevelno-1].coord[1][1] -
337  comp->reslevel[reslevelno-1].coord[1][0];
338  cblk->coord[1][1] += comp->reslevel[reslevelno-1].coord[1][1] -
339  comp->reslevel[reslevelno-1].coord[1][0];
340  }
341 
342  cblk->zero = 0;
343  cblk->lblock = 3;
344  cblk->length = 0;
345  cblk->lengthinc = 0;
346  cblk->npasses = 0;
347  }
348 
349  return 0;
350 }
351 
352 static int init_band(AVCodecContext *avctx,
353  Jpeg2000ResLevel *reslevel,
355  Jpeg2000CodingStyle *codsty,
356  Jpeg2000QuantStyle *qntsty,
357  int bandno, int gbandno, int reslevelno,
358  int cbps, int dx, int dy)
359 {
360  Jpeg2000Band *band = reslevel->band + bandno;
361  uint8_t log2_band_prec_width, log2_band_prec_height;
362  int declvl = codsty->nreslevels - reslevelno; // N_L -r see ISO/IEC 15444-1:2002 B.5
363  int precno;
364  int nb_precincts;
365  int i, j, ret;
366 
367  init_band_stepsize(avctx, band, codsty, qntsty, bandno, gbandno, reslevelno, cbps);
368 
369 
370  /* computation of tbx_0, tbx_1, tby_0, tby_1
371  * see ISO/IEC 15444-1:2002 B.5 eq. B-15 and tbl B.1
372  * codeblock width and height is computed for
373  * DCI JPEG 2000 codeblock_width = codeblock_width = 32 = 2 ^ 5 */
374  if (reslevelno == 0) {
375  /* for reslevelno = 0, only one band, x0_b = y0_b = 0 */
376  for (i = 0; i < 2; i++)
377  for (j = 0; j < 2; j++)
378  band->coord[i][j] =
379  ff_jpeg2000_ceildivpow2(comp->coord_o[i][j] - comp->coord_o[i][0],
380  declvl - 1);
381  log2_band_prec_width = reslevel->log2_prec_width;
382  log2_band_prec_height = reslevel->log2_prec_height;
383  /* see ISO/IEC 15444-1:2002 eq. B-17 and eq. B-15 */
384  band->log2_cblk_width = FFMIN(codsty->log2_cblk_width,
385  reslevel->log2_prec_width);
386  band->log2_cblk_height = FFMIN(codsty->log2_cblk_height,
387  reslevel->log2_prec_height);
388  } else {
389  /* 3 bands x0_b = 1 y0_b = 0; x0_b = 0 y0_b = 1; x0_b = y0_b = 1 */
390  /* x0_b and y0_b are computed with ((bandno + 1 >> i) & 1) */
391  for (i = 0; i < 2; i++)
392  for (j = 0; j < 2; j++)
393  /* Formula example for tbx_0 = ceildiv((tcx_0 - 2 ^ (declvl - 1) * x0_b) / declvl) */
394  band->coord[i][j] =
395  ff_jpeg2000_ceildivpow2(comp->coord_o[i][j] - comp->coord_o[i][0] -
396  (((bandno + 1 >> i) & 1) << declvl - 1),
397  declvl);
398  /* TODO: Manage case of 3 band offsets here or
399  * in coding/decoding function? */
400 
401  /* see ISO/IEC 15444-1:2002 eq. B-17 and eq. B-15 */
402  band->log2_cblk_width = FFMIN(codsty->log2_cblk_width,
403  reslevel->log2_prec_width - 1);
404  band->log2_cblk_height = FFMIN(codsty->log2_cblk_height,
405  reslevel->log2_prec_height - 1);
406 
407  log2_band_prec_width = reslevel->log2_prec_width - 1;
408  log2_band_prec_height = reslevel->log2_prec_height - 1;
409  }
410 
411  for (j = 0; j < 2; j++)
412  band->coord[0][j] = ff_jpeg2000_ceildiv(band->coord[0][j], dx);
413  for (j = 0; j < 2; j++)
414  band->coord[1][j] = ff_jpeg2000_ceildiv(band->coord[1][j], dy);
415 
416  nb_precincts = reslevel->num_precincts_x * reslevel->num_precincts_y;
417  band->prec = av_mallocz_array(nb_precincts, sizeof(*band->prec));
418  if (!band->prec)
419  return AVERROR(ENOMEM);
420 
421  for (precno = 0; precno < nb_precincts; precno++) {
422  ret = init_prec(band, reslevel, comp,
423  precno, bandno, reslevelno,
424  log2_band_prec_width, log2_band_prec_height);
425  if (ret < 0)
426  return ret;
427  }
428 
429  return 0;
430 }
431 
433  Jpeg2000CodingStyle *codsty,
434  Jpeg2000QuantStyle *qntsty,
435  int cbps, int dx, int dy,
436  AVCodecContext *avctx)
437 {
438  int reslevelno, bandno, gbandno = 0, ret, i, j;
439  uint32_t csize;
440 
441  if (!codsty->nreslevels2decode) {
442  av_log(avctx, AV_LOG_ERROR, "nreslevels2decode uninitialized\n");
443  return AVERROR_INVALIDDATA;
444  }
445 
446  if (ret = ff_jpeg2000_dwt_init(&comp->dwt, comp->coord,
447  codsty->nreslevels2decode - 1,
448  codsty->transform))
449  return ret;
450  // component size comp->coord is uint16_t so ir cannot overflow
451  csize = (comp->coord[0][1] - comp->coord[0][0]) *
452  (comp->coord[1][1] - comp->coord[1][0]);
453 
454  if (codsty->transform == FF_DWT97) {
455  comp->i_data = NULL;
456  comp->f_data = av_malloc_array(csize, sizeof(*comp->f_data));
457  if (!comp->f_data)
458  return AVERROR(ENOMEM);
459  } else {
460  comp->f_data = NULL;
461  comp->i_data = av_malloc_array(csize, sizeof(*comp->i_data));
462  if (!comp->i_data)
463  return AVERROR(ENOMEM);
464  }
465  comp->reslevel = av_mallocz_array(codsty->nreslevels, sizeof(*comp->reslevel));
466  if (!comp->reslevel)
467  return AVERROR(ENOMEM);
468  /* LOOP on resolution levels */
469  for (reslevelno = 0; reslevelno < codsty->nreslevels; reslevelno++) {
470  int declvl = codsty->nreslevels - reslevelno; // N_L -r see ISO/IEC 15444-1:2002 B.5
471  Jpeg2000ResLevel *reslevel = comp->reslevel + reslevelno;
472 
473  /* Compute borders for each resolution level.
474  * Computation of trx_0, trx_1, try_0 and try_1.
475  * see ISO/IEC 15444-1:2002 eq. B.5 and B-14 */
476  for (i = 0; i < 2; i++)
477  for (j = 0; j < 2; j++)
478  reslevel->coord[i][j] =
479  ff_jpeg2000_ceildivpow2(comp->coord_o[i][j], declvl - 1);
480  // update precincts size: 2^n value
481  reslevel->log2_prec_width = codsty->log2_prec_widths[reslevelno];
482  reslevel->log2_prec_height = codsty->log2_prec_heights[reslevelno];
483 
484  /* Number of bands for each resolution level */
485  if (reslevelno == 0)
486  reslevel->nbands = 1;
487  else
488  reslevel->nbands = 3;
489 
490  /* Number of precincts which span the tile for resolution level reslevelno
491  * see B.6 in ISO/IEC 15444-1:2002 eq. B-16
492  * num_precincts_x = |- trx_1 / 2 ^ log2_prec_width) -| - (trx_0 / 2 ^ log2_prec_width)
493  * num_precincts_y = |- try_1 / 2 ^ log2_prec_width) -| - (try_0 / 2 ^ log2_prec_width)
494  * for Dcinema profiles in JPEG 2000
495  * num_precincts_x = |- trx_1 / 2 ^ log2_prec_width) -|
496  * num_precincts_y = |- try_1 / 2 ^ log2_prec_width) -| */
497  if (reslevel->coord[0][1] == reslevel->coord[0][0])
498  reslevel->num_precincts_x = 0;
499  else
500  reslevel->num_precincts_x =
501  ff_jpeg2000_ceildivpow2(reslevel->coord[0][1],
502  reslevel->log2_prec_width) -
503  (reslevel->coord[0][0] >> reslevel->log2_prec_width);
504 
505  if (reslevel->coord[1][1] == reslevel->coord[1][0])
506  reslevel->num_precincts_y = 0;
507  else
508  reslevel->num_precincts_y =
509  ff_jpeg2000_ceildivpow2(reslevel->coord[1][1],
510  reslevel->log2_prec_height) -
511  (reslevel->coord[1][0] >> reslevel->log2_prec_height);
512 
513  reslevel->band = av_mallocz_array(reslevel->nbands, sizeof(*reslevel->band));
514  if (!reslevel->band)
515  return AVERROR(ENOMEM);
516 
517  for (bandno = 0; bandno < reslevel->nbands; bandno++, gbandno++) {
518  ret = init_band(avctx, reslevel,
519  comp, codsty, qntsty,
520  bandno, gbandno, reslevelno,
521  cbps, dx, dy);
522  if (ret < 0)
523  return ret;
524  }
525  }
526  return 0;
527 }
528 
530 {
531  int reslevelno, bandno, precno;
532  for (reslevelno = 0;
533  comp->reslevel && reslevelno < codsty->nreslevels;
534  reslevelno++) {
535  Jpeg2000ResLevel *reslevel;
536 
537  if (!comp->reslevel)
538  continue;
539 
540  reslevel = comp->reslevel + reslevelno;
541  for (bandno = 0; bandno < reslevel->nbands; bandno++) {
542  Jpeg2000Band *band;
543 
544  if (!reslevel->band)
545  continue;
546 
547  band = reslevel->band + bandno;
548  for (precno = 0; precno < reslevel->num_precincts_x * reslevel->num_precincts_y; precno++) {
549  Jpeg2000Prec *prec;
550 
551  if (!band->prec)
552  continue;
553 
554  prec = band->prec + precno;
555  av_freep(&prec->zerobits);
556  av_freep(&prec->cblkincl);
557  av_freep(&prec->cblk);
558 
559  }
560 
561  av_freep(&band->prec);
562  }
563  av_freep(&reslevel->band);
564  }
565 
566  ff_dwt_destroy(&comp->dwt);
567  av_freep(&comp->reslevel);
568  av_freep(&comp->i_data);
569  av_freep(&comp->f_data);
570 }
uint8_t ff_jpeg2000_sgnctxno_lut[16][16]
Definition: jpeg2000.c:142
uint16_t coord[2][2]
Definition: jpeg2000.h:172
const struct AVCodec * codec
Definition: avcodec.h:1418
#define AVERROR_INVALIDDATA
Invalid data found when processing input.
Definition: error.h:54
void av_cold ff_jpeg2000_init_tier1_luts(void)
Definition: jpeg2000.c:161
int flags[JPEG2000_MAX_CBLKW+2][JPEG2000_MAX_CBLKH+2]
Definition: jpeg2000.h:122
void ff_jpeg2000_cleanup(Jpeg2000Component *comp, Jpeg2000CodingStyle *codsty)
Definition: jpeg2000.c:529
DWTContext dwt
Definition: jpeg2000.h:193
Jpeg2000TgtNode * cblkincl
Definition: jpeg2000.h:170
static int init_prec(Jpeg2000Band *band, Jpeg2000ResLevel *reslevel, Jpeg2000Component *comp, int precno, int bandno, int reslevelno, int log2_band_prec_width, int log2_band_prec_height)
Definition: jpeg2000.c:247
memory handling functions
float * f_data
Definition: jpeg2000.h:194
int flag
Definition: cpu.c:35
av_log(ac->avr, AV_LOG_TRACE, "%d samples - audio_convert: %s to %s (%s)\, len, av_get_sample_fmt_name(ac->in_fmt), av_get_sample_fmt_name(ac->out_fmt), use_generic ? ac->func_descr_generic :ac->func_descr)
static const int contribtab[3][3]
Definition: jpeg2000.c:144
static const int xorbittab[3][3]
Definition: jpeg2000.c:146
float f_stepsize
Definition: jpeg2000.h:179
uint16_t nb_codeblocks_height
Definition: jpeg2000.h:168
static Jpeg2000TgtNode * ff_jpeg2000_tag_tree_init(int w, int h)
Definition: jpeg2000.c:52
Macro definitions for various function/variable attributes.
void av_freep(void *arg)
Free a memory block which has been allocated with av_malloc(z)() or av_realloc() and set the pointer ...
Definition: mem.c:202
uint8_t npasses
Definition: jpeg2000.h:155
int av_codec_is_encoder(const AVCodec *codec)
Definition: utils.c:96
#define JPEG2000_T1_SIG_W
Definition: jpeg2000.h:78
uint16_t log2_cblk_width
Definition: jpeg2000.h:177
static const uint8_t lut_gain[2][4]
Definition: jpeg2000.c:196
uint8_t
#define av_cold
Definition: attributes.h:66
Jpeg2000TgtNode * zerobits
Definition: jpeg2000.h:169
int ff_jpeg2000_dwt_init(DWTContext *s, uint16_t border[2][2], int decomp_levels, int type)
Initialize DWT.
Definition: jpeg2000dwt.c:291
Jpeg2000Band * band
Definition: jpeg2000.h:188
#define SHL(a, n)
Definition: jpeg2000.c:34
#define JPEG2000_T1_SIG_NE
Definition: jpeg2000.h:80
uint16_t num_precincts_x
Definition: jpeg2000.h:186
#define JPEG2000_T1_SIG_SE
Definition: jpeg2000.h:82
static const int ctxlbltab[3][3]
Definition: jpeg2000.c:145
uint8_t log2_prec_widths[JPEG2000_MAX_RESLEVELS]
Definition: jpeg2000.h:143
#define AV_LOG_ERROR
Something went wrong and cannot losslessly be recovered.
Definition: log.h:124
static int init_band(AVCodecContext *avctx, Jpeg2000ResLevel *reslevel, Jpeg2000Component *comp, Jpeg2000CodingStyle *codsty, Jpeg2000QuantStyle *qntsty, int bandno, int gbandno, int reslevelno, int cbps, int dx, int dy)
Definition: jpeg2000.c:352
void ff_jpeg2000_set_significance(Jpeg2000T1Context *t1, int x, int y, int negative)
Definition: jpeg2000.c:173
uint8_t nreslevels
Definition: jpeg2000.h:133
#define AVERROR(e)
Definition: error.h:43
uint8_t log2_prec_heights[JPEG2000_MAX_RESLEVELS]
Definition: jpeg2000.h:144
uint8_t zero
Definition: jpeg2000.h:161
static void init_band_stepsize(AVCodecContext *avctx, Jpeg2000Band *band, Jpeg2000CodingStyle *codsty, Jpeg2000QuantStyle *qntsty, int bandno, int gbandno, int reslevelno, int cbps)
Definition: jpeg2000.c:198
Jpeg2000Cblk * cblk
Definition: jpeg2000.h:171
#define FFMAX(a, b)
Definition: common.h:64
uint8_t lblock
Definition: jpeg2000.h:160
#define FFMIN(a, b)
Definition: common.h:66
struct Jpeg2000TgtNode * parent
Definition: jpeg2000.h:129
#define JPEG2000_T1_SGN_S
Definition: jpeg2000.h:90
JPEG 2000 structures and defines common to encoder and decoder.
int i_stepsize
Definition: jpeg2000.h:178
void ff_dwt_destroy(DWTContext *s)
Definition: jpeg2000dwt.c:353
int32_t
uint16_t num_precincts_y
Definition: jpeg2000.h:186
#define JPEG2000_T1_SIG_N
Definition: jpeg2000.h:76
uint16_t lengthinc
Definition: jpeg2000.h:159
static int ff_jpeg2000_ceildivpow2(int a, int b)
Definition: jpeg2000.h:201
NULL
Definition: eval.c:55
uint16_t coord[2][2]
Definition: jpeg2000.h:176
Libavcodec external API header.
uint16_t coord[2][2]
Definition: jpeg2000.h:163
uint8_t nreslevels2decode
Definition: jpeg2000.h:134
main external API structure.
Definition: avcodec.h:1409
uint8_t log2_prec_height
Definition: jpeg2000.h:187
uint16_t length
Definition: jpeg2000.h:158
uint8_t nbands
Definition: jpeg2000.h:184
uint16_t nb_codeblocks_width
Definition: jpeg2000.h:167
uint16_t coord[2][2]
Definition: jpeg2000.h:196
#define JPEG2000_T1_SIG_S
Definition: jpeg2000.h:79
Jpeg2000ResLevel * reslevel
Definition: jpeg2000.h:192
static int ff_jpeg2000_ceildiv(int a, int b)
Definition: jpeg2000.h:206
#define JPEG2000_T1_SGN_E
Definition: jpeg2000.h:92
static void * av_malloc_array(size_t nmemb, size_t size)
Definition: mem.h:92
uint8_t expn[JPEG2000_MAX_DECLEVELS *3]
Definition: jpeg2000.h:148
uint8_t quantsty
Definition: jpeg2000.h:150
common internal and external API header
uint8_t log2_cblk_width
Definition: jpeg2000.h:135
uint16_t coord_o[2][2]
Definition: jpeg2000.h:197
uint16_t log2_cblk_height
Definition: jpeg2000.h:177
static int32_t tag_tree_size(uint16_t w, uint16_t h)
Definition: jpeg2000.c:39
int ff_jpeg2000_init_component(Jpeg2000Component *comp, Jpeg2000CodingStyle *codsty, Jpeg2000QuantStyle *qntsty, int cbps, int dx, int dy, AVCodecContext *avctx)
Definition: jpeg2000.c:432
#define JPEG2000_T1_SIG_SW
Definition: jpeg2000.h:83
uint16_t coord[2][2]
Definition: jpeg2000.h:185
#define JPEG2000_T1_SGN_N
Definition: jpeg2000.h:89
static int getsgnctxno(int flag, uint8_t *xorbit)
Definition: jpeg2000.c:148
#define JPEG2000_T1_SIG_E
Definition: jpeg2000.h:77
Jpeg2000Prec * prec
Definition: jpeg2000.h:180
#define JPEG2000_T1_SIG
Definition: jpeg2000.h:95
static void * av_mallocz_array(size_t nmemb, size_t size)
Definition: mem.h:205
static void comp(unsigned char *dst, int dst_stride, unsigned char *src, int src_stride, int add)
Definition: eamad.c:83
static int getsigctxno(int flag, int bandno)
Definition: jpeg2000.c:87
uint8_t log2_cblk_height
Definition: jpeg2000.h:135
#define FFSWAP(type, a, b)
Definition: common.h:69
uint8_t ff_jpeg2000_sigctxno_lut[256][4]
Definition: jpeg2000.c:85
uint8_t log2_prec_width
Definition: jpeg2000.h:187
uint32_t mant[JPEG2000_MAX_DECLEVELS *3]
Definition: jpeg2000.h:149
#define JPEG2000_T1_SIG_NW
Definition: jpeg2000.h:81
#define JPEG2000_T1_SGN_W
Definition: jpeg2000.h:91
uint8_t ff_jpeg2000_xorbit_lut[16][16]
Definition: jpeg2000.c:142