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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 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 encoder and decoder common functions
26  */
27 
28 #include "libavutil/attributes.h"
29 #include "libavutil/avassert.h"
30 #include "libavutil/common.h"
31 #include "libavutil/mem.h"
32 #include "avcodec.h"
33 #include "jpeg2000.h"
34 
35 #define SHL(a, n) ((n) >= 0 ? (a) << (n) : (a) >> -(n))
36 
37 /* tag tree routines */
38 
39 /* allocate the memory for tag tree */
40 static int32_t tag_tree_size(uint16_t w, uint16_t h)
41 {
42  uint32_t res = 0;
43  while (w > 1 || h > 1) {
44  res += w * h;
45  av_assert0(res + 1 < INT32_MAX);
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 
60  t = res = av_mallocz_array(tt_size, sizeof(*t));
61  if (!res)
62  return NULL;
63 
64  while (w > 1 || h > 1) {
65  int i, j;
66  pw = w;
67  ph = h;
68 
69  w = (w + 1) >> 1;
70  h = (h + 1) >> 1;
71  t2 = t + pw * ph;
72 
73  for (i = 0; i < ph; i++)
74  for (j = 0; j < pw; j++)
75  t[i * pw + j].parent = &t2[(i >> 1) * w + (j >> 1)];
76 
77  t = t2;
78  }
79  t[0].parent = NULL;
80  return res;
81 }
82 
83 static void tag_tree_zero(Jpeg2000TgtNode *t, int w, int h)
84 {
85  int i, siz = tag_tree_size(w, h);
86 
87  for (i = 0; i < siz; i++) {
88  t[i].val = 0;
89  t[i].vis = 0;
90  }
91 }
92 
94 
95 static int getsigctxno(int flag, int bandno)
96 {
97  int h, v, d;
98 
99  h = ((flag & JPEG2000_T1_SIG_E) ? 1 : 0) +
100  ((flag & JPEG2000_T1_SIG_W) ? 1 : 0);
101  v = ((flag & JPEG2000_T1_SIG_N) ? 1 : 0) +
102  ((flag & JPEG2000_T1_SIG_S) ? 1 : 0);
103  d = ((flag & JPEG2000_T1_SIG_NE) ? 1 : 0) +
104  ((flag & JPEG2000_T1_SIG_NW) ? 1 : 0) +
105  ((flag & JPEG2000_T1_SIG_SE) ? 1 : 0) +
106  ((flag & JPEG2000_T1_SIG_SW) ? 1 : 0);
107 
108  if (bandno < 3) {
109  if (bandno == 1)
110  FFSWAP(int, h, v);
111  if (h == 2) return 8;
112  if (h == 1) {
113  if (v >= 1) return 7;
114  if (d >= 1) return 6;
115  return 5;
116  }
117  if (v == 2) return 4;
118  if (v == 1) return 3;
119  if (d >= 2) return 2;
120  if (d == 1) return 1;
121  } else {
122  if (d >= 3) return 8;
123  if (d == 2) {
124  if (h+v >= 1) return 7;
125  return 6;
126  }
127  if (d == 1) {
128  if (h+v >= 2) return 5;
129  if (h+v == 1) return 4;
130  return 3;
131  }
132  if (h+v >= 2) return 2;
133  if (h+v == 1) return 1;
134  }
135  return 0;
136 }
137 
139 
140 static const int contribtab[3][3] = { { 0, -1, 1 }, { -1, -1, 0 }, { 1, 0, 1 } };
141 static const int ctxlbltab[3][3] = { { 13, 12, 11 }, { 10, 9, 10 }, { 11, 12, 13 } };
142 static const int xorbittab[3][3] = { { 1, 1, 1 }, { 1, 0, 0 }, { 0, 0, 0 } };
143 
144 static int getsgnctxno(int flag, uint8_t *xorbit)
145 {
146  int vcontrib, hcontrib;
147 
148  hcontrib = contribtab[flag & JPEG2000_T1_SIG_E ? flag & JPEG2000_T1_SGN_E ? 1 : 2 : 0]
149  [flag & JPEG2000_T1_SIG_W ? flag & JPEG2000_T1_SGN_W ? 1 : 2 : 0] + 1;
150  vcontrib = contribtab[flag & JPEG2000_T1_SIG_S ? flag & JPEG2000_T1_SGN_S ? 1 : 2 : 0]
151  [flag & JPEG2000_T1_SIG_N ? flag & JPEG2000_T1_SGN_N ? 1 : 2 : 0] + 1;
152  *xorbit = xorbittab[hcontrib][vcontrib];
153 
154  return ctxlbltab[hcontrib][vcontrib];
155 }
156 
158 {
159  int i, j;
160  for (i = 0; i < 256; i++)
161  for (j = 0; j < 4; j++)
163  for (i = 0; i < 16; i++)
164  for (j = 0; j < 16; j++)
166  getsgnctxno(i + (j << 8), &ff_jpeg2000_xorbit_lut[i][j]);
167 }
168 
170  int negative)
171 {
172  x++;
173  y++;
174  t1->flags[y][x] |= JPEG2000_T1_SIG;
175  if (negative) {
176  t1->flags[y][x + 1] |= JPEG2000_T1_SIG_W | JPEG2000_T1_SGN_W;
177  t1->flags[y][x - 1] |= JPEG2000_T1_SIG_E | JPEG2000_T1_SGN_E;
178  t1->flags[y + 1][x] |= JPEG2000_T1_SIG_N | JPEG2000_T1_SGN_N;
179  t1->flags[y - 1][x] |= JPEG2000_T1_SIG_S | JPEG2000_T1_SGN_S;
180  } else {
181  t1->flags[y][x + 1] |= JPEG2000_T1_SIG_W;
182  t1->flags[y][x - 1] |= JPEG2000_T1_SIG_E;
183  t1->flags[y + 1][x] |= JPEG2000_T1_SIG_N;
184  t1->flags[y - 1][x] |= JPEG2000_T1_SIG_S;
185  }
186  t1->flags[y + 1][x + 1] |= JPEG2000_T1_SIG_NW;
187  t1->flags[y + 1][x - 1] |= JPEG2000_T1_SIG_NE;
188  t1->flags[y - 1][x + 1] |= JPEG2000_T1_SIG_SW;
189  t1->flags[y - 1][x - 1] |= JPEG2000_T1_SIG_SE;
190 }
191 
192 static const uint8_t lut_gain[2][4] = { { 0, 0, 0, 0 }, { 0, 1, 1, 2 } };
193 
195  Jpeg2000CodingStyle *codsty,
196  Jpeg2000QuantStyle *qntsty,
197  int cbps, int dx, int dy,
198  AVCodecContext *avctx)
199 {
200  uint8_t log2_band_prec_width, log2_band_prec_height;
201  int reslevelno, bandno, gbandno = 0, ret, i, j;
202  uint32_t csize;
203 
204  if (codsty->nreslevels2decode <= 0) {
205  av_log(avctx, AV_LOG_ERROR, "nreslevels2decode %d invalid or uninitialized\n", codsty->nreslevels2decode);
206  return AVERROR_INVALIDDATA;
207  }
208 
209  if (ret = ff_jpeg2000_dwt_init(&comp->dwt, comp->coord,
210  codsty->nreslevels2decode - 1,
211  codsty->transform))
212  return ret;
213  // component size comp->coord is uint16_t so ir cannot overflow
214  csize = (comp->coord[0][1] - comp->coord[0][0]) *
215  (comp->coord[1][1] - comp->coord[1][0]);
216 
217  if (codsty->transform == FF_DWT97) {
218  comp->i_data = NULL;
219  comp->f_data = av_mallocz_array(csize, sizeof(*comp->f_data));
220  if (!comp->f_data)
221  return AVERROR(ENOMEM);
222  } else {
223  comp->f_data = NULL;
224  comp->i_data = av_mallocz_array(csize, sizeof(*comp->i_data));
225  if (!comp->i_data)
226  return AVERROR(ENOMEM);
227  }
228  comp->reslevel = av_mallocz_array(codsty->nreslevels, sizeof(*comp->reslevel));
229  if (!comp->reslevel)
230  return AVERROR(ENOMEM);
231  /* LOOP on resolution levels */
232  for (reslevelno = 0; reslevelno < codsty->nreslevels; reslevelno++) {
233  int declvl = codsty->nreslevels - reslevelno; // N_L -r see ISO/IEC 15444-1:2002 B.5
234  Jpeg2000ResLevel *reslevel = comp->reslevel + reslevelno;
235 
236  /* Compute borders for each resolution level.
237  * Computation of trx_0, trx_1, try_0 and try_1.
238  * see ISO/IEC 15444-1:2002 eq. B.5 and B-14 */
239  for (i = 0; i < 2; i++)
240  for (j = 0; j < 2; j++)
241  reslevel->coord[i][j] =
242  ff_jpeg2000_ceildivpow2(comp->coord_o[i][j], declvl - 1);
243  // update precincts size: 2^n value
244  reslevel->log2_prec_width = codsty->log2_prec_widths[reslevelno];
245  reslevel->log2_prec_height = codsty->log2_prec_heights[reslevelno];
246 
247  /* Number of bands for each resolution level */
248  if (reslevelno == 0)
249  reslevel->nbands = 1;
250  else
251  reslevel->nbands = 3;
252 
253  /* Number of precincts which span the tile for resolution level reslevelno
254  * see B.6 in ISO/IEC 15444-1:2002 eq. B-16
255  * num_precincts_x = |- trx_1 / 2 ^ log2_prec_width) -| - (trx_0 / 2 ^ log2_prec_width)
256  * num_precincts_y = |- try_1 / 2 ^ log2_prec_width) -| - (try_0 / 2 ^ log2_prec_width)
257  * for Dcinema profiles in JPEG 2000
258  * num_precincts_x = |- trx_1 / 2 ^ log2_prec_width) -|
259  * num_precincts_y = |- try_1 / 2 ^ log2_prec_width) -| */
260  if (reslevel->coord[0][1] == reslevel->coord[0][0])
261  reslevel->num_precincts_x = 0;
262  else
263  reslevel->num_precincts_x =
264  ff_jpeg2000_ceildivpow2(reslevel->coord[0][1],
265  reslevel->log2_prec_width) -
266  (reslevel->coord[0][0] >> reslevel->log2_prec_width);
267 
268  if (reslevel->coord[1][1] == reslevel->coord[1][0])
269  reslevel->num_precincts_y = 0;
270  else
271  reslevel->num_precincts_y =
272  ff_jpeg2000_ceildivpow2(reslevel->coord[1][1],
273  reslevel->log2_prec_height) -
274  (reslevel->coord[1][0] >> reslevel->log2_prec_height);
275 
276  reslevel->band = av_mallocz_array(reslevel->nbands, sizeof(*reslevel->band));
277  if (!reslevel->band)
278  return AVERROR(ENOMEM);
279 
280  for (bandno = 0; bandno < reslevel->nbands; bandno++, gbandno++) {
281  Jpeg2000Band *band = reslevel->band + bandno;
282  int cblkno, precno;
283  int nb_precincts;
284 
285  /* TODO: Implementation of quantization step not finished,
286  * see ISO/IEC 15444-1:2002 E.1 and A.6.4. */
287  switch (qntsty->quantsty) {
288  uint8_t gain;
289  case JPEG2000_QSTY_NONE:
290  /* TODO: to verify. No quantization in this case */
291  band->f_stepsize = 1;
292  break;
293  case JPEG2000_QSTY_SI:
294  /*TODO: Compute formula to implement. */
295 // numbps = cbps +
296 // lut_gain[codsty->transform == FF_DWT53][bandno + (reslevelno > 0)];
297 // band->f_stepsize = SHL(2048 + qntsty->mant[gbandno],
298 // 2 + numbps - qntsty->expn[gbandno]);
299 // break;
300  case JPEG2000_QSTY_SE:
301  /* Exponent quantization step.
302  * Formula:
303  * delta_b = 2 ^ (R_b - expn_b) * (1 + (mant_b / 2 ^ 11))
304  * R_b = R_I + log2 (gain_b )
305  * see ISO/IEC 15444-1:2002 E.1.1 eqn. E-3 and E-4 */
306  /* TODO/WARN: value of log2 (gain_b ) not taken into account
307  * but it works (compared to OpenJPEG). Why?
308  * Further investigation needed. */
309  gain = cbps;
310  band->f_stepsize = pow(2.0, gain - qntsty->expn[gbandno]);
311  band->f_stepsize *= qntsty->mant[gbandno] / 2048.0 + 1.0;
312  break;
313  default:
314  band->f_stepsize = 0;
315  av_log(avctx, AV_LOG_ERROR, "Unknown quantization format\n");
316  break;
317  }
318  /* FIXME: In openjepg code stespize = stepsize * 0.5. Why?
319  * If not set output of entropic decoder is not correct. */
320  if (!av_codec_is_encoder(avctx->codec))
321  band->f_stepsize *= 0.5;
322 
323  band->i_stepsize = band->f_stepsize * (1 << 15);
324 
325  /* computation of tbx_0, tbx_1, tby_0, tby_1
326  * see ISO/IEC 15444-1:2002 B.5 eq. B-15 and tbl B.1
327  * codeblock width and height is computed for
328  * DCI JPEG 2000 codeblock_width = codeblock_width = 32 = 2 ^ 5 */
329  if (reslevelno == 0) {
330  /* for reslevelno = 0, only one band, x0_b = y0_b = 0 */
331  for (i = 0; i < 2; i++)
332  for (j = 0; j < 2; j++)
333  band->coord[i][j] =
334  ff_jpeg2000_ceildivpow2(comp->coord_o[i][j] - comp->coord_o[i][0],
335  declvl - 1);
336  log2_band_prec_width = reslevel->log2_prec_width;
337  log2_band_prec_height = reslevel->log2_prec_height;
338  /* see ISO/IEC 15444-1:2002 eq. B-17 and eq. B-15 */
339  band->log2_cblk_width = FFMIN(codsty->log2_cblk_width,
340  reslevel->log2_prec_width);
341  band->log2_cblk_height = FFMIN(codsty->log2_cblk_height,
342  reslevel->log2_prec_height);
343  } else {
344  /* 3 bands x0_b = 1 y0_b = 0; x0_b = 0 y0_b = 1; x0_b = y0_b = 1 */
345  /* x0_b and y0_b are computed with ((bandno + 1 >> i) & 1) */
346  for (i = 0; i < 2; i++)
347  for (j = 0; j < 2; j++)
348  /* Formula example for tbx_0 = ceildiv((tcx_0 - 2 ^ (declvl - 1) * x0_b) / declvl) */
349  band->coord[i][j] =
350  ff_jpeg2000_ceildivpow2(comp->coord_o[i][j] - comp->coord_o[i][0] -
351  (((bandno + 1 >> i) & 1) << declvl - 1),
352  declvl);
353  /* TODO: Manage case of 3 band offsets here or
354  * in coding/decoding function? */
355 
356  /* see ISO/IEC 15444-1:2002 eq. B-17 and eq. B-15 */
357  band->log2_cblk_width = FFMIN(codsty->log2_cblk_width,
358  reslevel->log2_prec_width - 1);
359  band->log2_cblk_height = FFMIN(codsty->log2_cblk_height,
360  reslevel->log2_prec_height - 1);
361 
362  log2_band_prec_width = reslevel->log2_prec_width - 1;
363  log2_band_prec_height = reslevel->log2_prec_height - 1;
364  }
365 
366  if (reslevel->num_precincts_x * (uint64_t)reslevel->num_precincts_y > INT_MAX) {
367  band->prec = NULL;
368  return AVERROR(ENOMEM);
369  }
370  nb_precincts = reslevel->num_precincts_x * reslevel->num_precincts_y;
371  band->prec = av_mallocz_array(nb_precincts, sizeof(*band->prec));
372  if (!band->prec)
373  return AVERROR(ENOMEM);
374 
375  for (precno = 0; precno < nb_precincts; precno++) {
376  Jpeg2000Prec *prec = band->prec + precno;
377  int nb_codeblocks;
378 
379  /* TODO: Explain formula for JPEG200 DCINEMA. */
380  /* TODO: Verify with previous count of codeblocks per band */
381 
382  /* Compute P_x0 */
383  prec->coord[0][0] = (precno % reslevel->num_precincts_x) *
384  (1 << log2_band_prec_width);
385  prec->coord[0][0] = FFMAX(prec->coord[0][0], band->coord[0][0]);
386 
387  /* Compute P_y0 */
388  prec->coord[1][0] = (precno / reslevel->num_precincts_x) *
389  (1 << log2_band_prec_height);
390  prec->coord[1][0] = FFMAX(prec->coord[1][0], band->coord[1][0]);
391 
392  /* Compute P_x1 */
393  prec->coord[0][1] = prec->coord[0][0] +
394  (1 << log2_band_prec_width);
395  prec->coord[0][1] = FFMIN(prec->coord[0][1], band->coord[0][1]);
396 
397  /* Compute P_y1 */
398  prec->coord[1][1] = prec->coord[1][0] +
399  (1 << log2_band_prec_height);
400  prec->coord[1][1] = FFMIN(prec->coord[1][1], band->coord[1][1]);
401 
402  prec->nb_codeblocks_width =
403  ff_jpeg2000_ceildivpow2(prec->coord[0][1] -
404  prec->coord[0][0],
405  band->log2_cblk_width);
406  prec->nb_codeblocks_height =
407  ff_jpeg2000_ceildivpow2(prec->coord[1][1] -
408  prec->coord[1][0],
409  band->log2_cblk_height);
410 
411  /* Tag trees initialization */
412  prec->cblkincl =
414  prec->nb_codeblocks_height);
415  if (!prec->cblkincl)
416  return AVERROR(ENOMEM);
417 
418  prec->zerobits =
420  prec->nb_codeblocks_height);
421  if (!prec->zerobits)
422  return AVERROR(ENOMEM);
423 
424  if (prec->nb_codeblocks_width * (uint64_t)prec->nb_codeblocks_height > INT_MAX) {
425  prec->cblk = NULL;
426  return AVERROR(ENOMEM);
427  }
428  nb_codeblocks = prec->nb_codeblocks_width * prec->nb_codeblocks_height;
429  prec->cblk = av_mallocz_array(nb_codeblocks, sizeof(*prec->cblk));
430  if (!prec->cblk)
431  return AVERROR(ENOMEM);
432  for (cblkno = 0; cblkno < nb_codeblocks; cblkno++) {
433  Jpeg2000Cblk *cblk = prec->cblk + cblkno;
434  uint16_t Cx0, Cy0;
435 
436  /* Compute coordinates of codeblocks */
437  /* Compute Cx0*/
438  Cx0 = (prec->coord[0][0] >> band->log2_cblk_width) << band->log2_cblk_width;
439  Cx0 = Cx0 + ((cblkno % prec->nb_codeblocks_width) << band->log2_cblk_width);
440  cblk->coord[0][0] = FFMAX(Cx0, prec->coord[0][0]);
441 
442  /* Compute Cy0*/
443  Cy0 = (prec->coord[1][0] >> band->log2_cblk_height) << band->log2_cblk_height;
444  Cy0 = Cy0 + ((cblkno / prec->nb_codeblocks_width) << band->log2_cblk_height);
445  cblk->coord[1][0] = FFMAX(Cy0, prec->coord[1][0]);
446 
447  /* Compute Cx1 */
448  cblk->coord[0][1] = FFMIN(Cx0 + (1 << band->log2_cblk_width),
449  prec->coord[0][1]);
450 
451  /* Compute Cy1 */
452  cblk->coord[1][1] = FFMIN(Cy0 + (1 << band->log2_cblk_height),
453  prec->coord[1][1]);
454  /* Update code-blocks coordinates according sub-band position */
455  if ((bandno + !!reslevelno) & 1) {
456  cblk->coord[0][0] += comp->reslevel[reslevelno-1].coord[0][1] -
457  comp->reslevel[reslevelno-1].coord[0][0];
458  cblk->coord[0][1] += comp->reslevel[reslevelno-1].coord[0][1] -
459  comp->reslevel[reslevelno-1].coord[0][0];
460  }
461  if ((bandno + !!reslevelno) & 2) {
462  cblk->coord[1][0] += comp->reslevel[reslevelno-1].coord[1][1] -
463  comp->reslevel[reslevelno-1].coord[1][0];
464  cblk->coord[1][1] += comp->reslevel[reslevelno-1].coord[1][1] -
465  comp->reslevel[reslevelno-1].coord[1][0];
466  }
467 
468  cblk->zero = 0;
469  cblk->lblock = 3;
470  cblk->length = 0;
471  cblk->lengthinc = 0;
472  cblk->npasses = 0;
473  }
474  }
475  }
476  }
477  return 0;
478 }
479 
481 {
482  int reslevelno, bandno, cblkno, precno;
483  for (reslevelno = 0; reslevelno < codsty->nreslevels; reslevelno++) {
484  Jpeg2000ResLevel *rlevel = comp->reslevel + reslevelno;
485  for (bandno = 0; bandno < rlevel->nbands; bandno++) {
486  Jpeg2000Band *band = rlevel->band + bandno;
487  for(precno = 0; precno < rlevel->num_precincts_x * rlevel->num_precincts_y; precno++) {
488  Jpeg2000Prec *prec = band->prec + precno;
491  for (cblkno = 0; cblkno < prec->nb_codeblocks_width * prec->nb_codeblocks_height; cblkno++) {
492  Jpeg2000Cblk *cblk = prec->cblk + cblkno;
493  cblk->length = 0;
494  cblk->lblock = 3;
495  }
496  }
497  }
498  }
499 }
500 
502 {
503  int reslevelno, bandno, precno;
504  for (reslevelno = 0;
505  comp->reslevel && reslevelno < codsty->nreslevels;
506  reslevelno++) {
507  Jpeg2000ResLevel *reslevel;
508 
509  if (!comp->reslevel)
510  continue;
511 
512  reslevel = comp->reslevel + reslevelno;
513  for (bandno = 0; bandno < reslevel->nbands; bandno++) {
515 
516  if (!reslevel->band)
517  continue;
518 
519  band = reslevel->band + bandno;
520  for (precno = 0; precno < reslevel->num_precincts_x * reslevel->num_precincts_y; precno++) {
521  if (band->prec) {
522  Jpeg2000Prec *prec = band->prec + precno;
523  av_freep(&prec->zerobits);
524  av_freep(&prec->cblkincl);
525  av_freep(&prec->cblk);
526  }
527  }
528 
529  av_freep(&band->prec);
530  }
531  av_freep(&reslevel->band);
532  }
533 
534  ff_dwt_destroy(&comp->dwt);
535  av_freep(&comp->reslevel);
536  av_freep(&comp->i_data);
537  av_freep(&comp->f_data);
538 }
uint8_t ff_jpeg2000_sgnctxno_lut[16][16]
Definition: jpeg2000.c:138
uint16_t coord[2][2]
Definition: jpeg2000.h:178
#define NULL
Definition: coverity.c:32
const struct AVCodec * codec
Definition: avcodec.h:1250
float v
#define AVERROR_INVALIDDATA
Invalid data found when processing input.
Definition: error.h:59
void av_cold ff_jpeg2000_init_tier1_luts(void)
Definition: jpeg2000.c:157
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:501
DWTContext dwt
Definition: jpeg2000.h:199
Jpeg2000TgtNode * cblkincl
Definition: jpeg2000.h:176
memory handling functions
float * f_data
Definition: jpeg2000.h:200
uint16_t mant[JPEG2000_MAX_DECLEVELS *3]
Definition: jpeg2000.h:149
static const int contribtab[3][3]
Definition: jpeg2000.c:140
static const int xorbittab[3][3]
Definition: jpeg2000.c:142
static void tag_tree_zero(Jpeg2000TgtNode *t, int w, int h)
Definition: jpeg2000.c:83
float f_stepsize
Definition: jpeg2000.h:185
uint16_t nb_codeblocks_height
Definition: jpeg2000.h:174
static Jpeg2000TgtNode * ff_jpeg2000_tag_tree_init(int w, int h)
Definition: jpeg2000.c:52
Macro definitions for various function/variable attributes.
uint8_t npasses
Definition: jpeg2000.h:160
int av_codec_is_encoder(const AVCodec *codec)
Definition: utils.c:187
#define JPEG2000_T1_SIG_W
Definition: jpeg2000.h:78
uint16_t log2_cblk_width
Definition: jpeg2000.h:183
#define av_assert0(cond)
assert() equivalent, that is always enabled.
Definition: avassert.h:37
static const uint8_t lut_gain[2][4]
Definition: jpeg2000.c:192
uint8_t
#define av_cold
Definition: attributes.h:74
Jpeg2000TgtNode * zerobits
Definition: jpeg2000.h:175
int ff_jpeg2000_dwt_init(DWTContext *s, uint16_t border[2][2], int decomp_levels, int type)
Initialize DWT.
Definition: jpeg2000dwt.c:497
Jpeg2000Band * band
Definition: jpeg2000.h:194
uint8_t val
Definition: jpeg2000.h:127
#define JPEG2000_T1_SIG_NE
Definition: jpeg2000.h:80
uint16_t num_precincts_x
Definition: jpeg2000.h:192
#define JPEG2000_T1_SIG_SE
Definition: jpeg2000.h:82
static const int ctxlbltab[3][3]
Definition: jpeg2000.c:141
#define av_log(a,...)
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:176
void ff_jpeg2000_set_significance(Jpeg2000T1Context *t1, int x, int y, int negative)
Definition: jpeg2000.c:169
#define AVERROR(e)
Definition: error.h:43
uint8_t log2_prec_heights[JPEG2000_MAX_RESLEVELS]
Definition: jpeg2000.h:144
#define t1
Definition: regdef.h:29
simple assert() macros that are a bit more flexible than ISO C assert().
uint8_t zero
Definition: jpeg2000.h:166
Jpeg2000Cblk * cblk
Definition: jpeg2000.h:177
#define FFMAX(a, b)
Definition: common.h:64
Libavcodec external API header.
uint8_t lblock
Definition: jpeg2000.h:165
#define FFMIN(a, b)
Definition: common.h:66
struct Jpeg2000TgtNode * parent
Definition: jpeg2000.h:129
float y
#define JPEG2000_T1_SGN_S
Definition: jpeg2000.h:90
ret
Definition: avfilter.c:974
JPEG 2000 structures and defines common to encoder and decoder.
int i_stepsize
Definition: jpeg2000.h:184
void ff_dwt_destroy(DWTContext *s)
Definition: jpeg2000dwt.c:574
int32_t
uint16_t num_precincts_y
Definition: jpeg2000.h:192
#define JPEG2000_T1_SIG_N
Definition: jpeg2000.h:76
uint16_t lengthinc
Definition: jpeg2000.h:164
static int ff_jpeg2000_ceildivpow2(int a, int b)
Definition: jpeg2000.h:207
uint16_t coord[2][2]
Definition: jpeg2000.h:182
uint16_t coord[2][2]
Definition: jpeg2000.h:169
main external API structure.
Definition: avcodec.h:1241
uint8_t vis
Definition: jpeg2000.h:128
uint8_t log2_prec_height
Definition: jpeg2000.h:193
uint16_t length
Definition: jpeg2000.h:163
uint8_t nbands
Definition: jpeg2000.h:190
uint16_t nb_codeblocks_width
Definition: jpeg2000.h:173
uint16_t coord[2][2]
Definition: jpeg2000.h:202
#define JPEG2000_T1_SIG_S
Definition: jpeg2000.h:79
Jpeg2000ResLevel * reslevel
Definition: jpeg2000.h:198
void ff_jpeg2000_reinit(Jpeg2000Component *comp, Jpeg2000CodingStyle *codsty)
Definition: jpeg2000.c:480
#define JPEG2000_T1_SGN_E
Definition: jpeg2000.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:203
uint16_t log2_cblk_height
Definition: jpeg2000.h:183
static int32_t tag_tree_size(uint16_t w, uint16_t h)
Definition: jpeg2000.c:40
int ff_jpeg2000_init_component(Jpeg2000Component *comp, Jpeg2000CodingStyle *codsty, Jpeg2000QuantStyle *qntsty, int cbps, int dx, int dy, AVCodecContext *avctx)
Definition: jpeg2000.c:194
#define JPEG2000_T1_SIG_SW
Definition: jpeg2000.h:83
uint16_t coord[2][2]
Definition: jpeg2000.h:191
#define JPEG2000_T1_SGN_N
Definition: jpeg2000.h:89
static int getsgnctxno(int flag, uint8_t *xorbit)
Definition: jpeg2000.c:144
#define JPEG2000_T1_SIG_E
Definition: jpeg2000.h:77
Jpeg2000Prec * prec
Definition: jpeg2000.h:186
#define JPEG2000_T1_SIG
Definition: jpeg2000.h:95
static void * av_mallocz_array(size_t nmemb, size_t size)
Definition: mem.h:228
#define av_freep(p)
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:95
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:93
uint8_t log2_prec_width
Definition: jpeg2000.h:193
#define JPEG2000_T1_SIG_NW
Definition: jpeg2000.h:81
#define JPEG2000_T1_SGN_W
Definition: jpeg2000.h:91
#define t2
Definition: regdef.h:30
uint8_t ff_jpeg2000_xorbit_lut[16][16]
Definition: jpeg2000.c:138