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 */ 40static 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 52static Jpeg2000TgtNode *ff_jpeg2000_tag_tree_init(int w, int h) 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 83static 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 93uint8_t ff_jpeg2000_sigctxno_lut[256][4]; 94 95static 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 138uint8_t ff_jpeg2000_sgnctxno_lut[16][16], ff_jpeg2000_xorbit_lut[16][16]; 139 140static const int contribtab[3][3] = { { 0, -1, 1 }, { -1, -1, 0 }, { 1, 0, 1 } }; 141static const int ctxlbltab[3][3] = { { 13, 12, 11 }, { 10, 9, 10 }, { 11, 12, 13 } }; 142static const int xorbittab[3][3] = { { 1, 1, 1 }, { 1, 0, 0 }, { 0, 0, 0 } }; 143 144static 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 157void av_cold ff_jpeg2000_init_tier1_luts(void) 158{ 159 int i, j; 160 for (i = 0; i < 256; i++) 161 for (j = 0; j < 4; j++) 162 ff_jpeg2000_sigctxno_lut[i][j] = getsigctxno(i, j); 163 for (i = 0; i < 16; i++) 164 for (j = 0; j < 16; j++) 165 ff_jpeg2000_sgnctxno_lut[i][j] = 166 getsgnctxno(i + (j << 8), &ff_jpeg2000_xorbit_lut[i][j]); 167} 168 169void ff_jpeg2000_set_significance(Jpeg2000T1Context *t1, int x, int y, 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 192static const uint8_t lut_gain[2][4] = { { 0, 0, 0, 0 }, { 0, 1, 1, 2 } }; 193 194int ff_jpeg2000_init_component(Jpeg2000Component *comp, 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 int numbps; 290 case JPEG2000_QSTY_NONE: 291 /* TODO: to verify. No quantization in this case */ 292 band->f_stepsize = 1; 293 break; 294 case JPEG2000_QSTY_SI: 295 /*TODO: Compute formula to implement. */ 296 numbps = cbps + 297 lut_gain[codsty->transform == FF_DWT53][bandno + (reslevelno > 0)]; 298 band->f_stepsize = SHL(2048 + qntsty->mant[gbandno], 299 2 + numbps - qntsty->expn[gbandno]); 300 break; 301 case JPEG2000_QSTY_SE: 302 /* Exponent quantization step. 303 * Formula: 304 * delta_b = 2 ^ (R_b - expn_b) * (1 + (mant_b / 2 ^ 11)) 305 * R_b = R_I + log2 (gain_b ) 306 * see ISO/IEC 15444-1:2002 E.1.1 eqn. E-3 and E-4 */ 307 /* TODO/WARN: value of log2 (gain_b ) not taken into account 308 * but it works (compared to OpenJPEG). Why? 309 * Further investigation needed. */ 310 gain = cbps; 311 band->f_stepsize = pow(2.0, gain - qntsty->expn[gbandno]); 312 band->f_stepsize *= qntsty->mant[gbandno] / 2048.0 + 1.0; 313 break; 314 default: 315 band->f_stepsize = 0; 316 av_log(avctx, AV_LOG_ERROR, "Unknown quantization format\n"); 317 break; 318 } 319 /* FIXME: In openjepg code stespize = stepsize * 0.5. Why? 320 * If not set output of entropic decoder is not correct. */ 321 if (!av_codec_is_encoder(avctx->codec)) 322 band->f_stepsize *= 0.5; 323 324 band->i_stepsize = band->f_stepsize * (1 << 15); 325 326 /* computation of tbx_0, tbx_1, tby_0, tby_1 327 * see ISO/IEC 15444-1:2002 B.5 eq. B-15 and tbl B.1 328 * codeblock width and height is computed for 329 * DCI JPEG 2000 codeblock_width = codeblock_width = 32 = 2 ^ 5 */ 330 if (reslevelno == 0) { 331 /* for reslevelno = 0, only one band, x0_b = y0_b = 0 */ 332 for (i = 0; i < 2; i++) 333 for (j = 0; j < 2; j++) 334 band->coord[i][j] = 335 ff_jpeg2000_ceildivpow2(comp->coord_o[i][j] - comp->coord_o[i][0], 336 declvl - 1); 337 log2_band_prec_width = reslevel->log2_prec_width; 338 log2_band_prec_height = reslevel->log2_prec_height; 339 /* see ISO/IEC 15444-1:2002 eq. B-17 and eq. B-15 */ 340 band->log2_cblk_width = FFMIN(codsty->log2_cblk_width, 341 reslevel->log2_prec_width); 342 band->log2_cblk_height = FFMIN(codsty->log2_cblk_height, 343 reslevel->log2_prec_height); 344 } else { 345 /* 3 bands x0_b = 1 y0_b = 0; x0_b = 0 y0_b = 1; x0_b = y0_b = 1 */ 346 /* x0_b and y0_b are computed with ((bandno + 1 >> i) & 1) */ 347 for (i = 0; i < 2; i++) 348 for (j = 0; j < 2; j++) 349 /* Formula example for tbx_0 = ceildiv((tcx_0 - 2 ^ (declvl - 1) * x0_b) / declvl) */ 350 band->coord[i][j] = 351 ff_jpeg2000_ceildivpow2(comp->coord_o[i][j] - comp->coord_o[i][0] - 352 (((bandno + 1 >> i) & 1) << declvl - 1), 353 declvl); 354 /* TODO: Manage case of 3 band offsets here or 355 * in coding/decoding function? */ 356 357 /* see ISO/IEC 15444-1:2002 eq. B-17 and eq. B-15 */ 358 band->log2_cblk_width = FFMIN(codsty->log2_cblk_width, 359 reslevel->log2_prec_width - 1); 360 band->log2_cblk_height = FFMIN(codsty->log2_cblk_height, 361 reslevel->log2_prec_height - 1); 362 363 log2_band_prec_width = reslevel->log2_prec_width - 1; 364 log2_band_prec_height = reslevel->log2_prec_height - 1; 365 } 366 367 for (j = 0; j < 2; j++) 368 band->coord[0][j] = ff_jpeg2000_ceildiv(band->coord[0][j], dx); 369 for (j = 0; j < 2; j++) 370 band->coord[1][j] = ff_jpeg2000_ceildiv(band->coord[1][j], dy); 371 372 band->prec = av_mallocz_array(reslevel->num_precincts_x * 373 (uint64_t)reslevel->num_precincts_y, 374 sizeof(*band->prec)); 375 if (!band->prec) 376 return AVERROR(ENOMEM); 377 378 nb_precincts = reslevel->num_precincts_x * reslevel->num_precincts_y; 379 380 for (precno = 0; precno < nb_precincts; precno++) { 381 Jpeg2000Prec *prec = band->prec + precno; 382 383 /* TODO: Explain formula for JPEG200 DCINEMA. */ 384 /* TODO: Verify with previous count of codeblocks per band */ 385 386 /* Compute P_x0 */ 387 prec->coord[0][0] = (precno % reslevel->num_precincts_x) * 388 (1 << log2_band_prec_width); 389 prec->coord[0][0] = FFMAX(prec->coord[0][0], band->coord[0][0]); 390 391 /* Compute P_y0 */ 392 prec->coord[1][0] = (precno / reslevel->num_precincts_x) * 393 (1 << log2_band_prec_height); 394 prec->coord[1][0] = FFMAX(prec->coord[1][0], band->coord[1][0]); 395 396 /* Compute P_x1 */ 397 prec->coord[0][1] = prec->coord[0][0] + 398 (1 << log2_band_prec_width); 399 prec->coord[0][1] = FFMIN(prec->coord[0][1], band->coord[0][1]); 400 401 /* Compute P_y1 */ 402 prec->coord[1][1] = prec->coord[1][0] + 403 (1 << log2_band_prec_height); 404 prec->coord[1][1] = FFMIN(prec->coord[1][1], band->coord[1][1]); 405 406 prec->nb_codeblocks_width = 407 ff_jpeg2000_ceildivpow2(prec->coord[0][1] - 408 prec->coord[0][0], 409 band->log2_cblk_width); 410 prec->nb_codeblocks_height = 411 ff_jpeg2000_ceildivpow2(prec->coord[1][1] - 412 prec->coord[1][0], 413 band->log2_cblk_height); 414 415 /* Tag trees initialization */ 416 prec->cblkincl = 417 ff_jpeg2000_tag_tree_init(prec->nb_codeblocks_width, 418 prec->nb_codeblocks_height); 419 if (!prec->cblkincl) 420 return AVERROR(ENOMEM); 421 422 prec->zerobits = 423 ff_jpeg2000_tag_tree_init(prec->nb_codeblocks_width, 424 prec->nb_codeblocks_height); 425 if (!prec->zerobits) 426 return AVERROR(ENOMEM); 427 428 prec->cblk = av_mallocz_array(prec->nb_codeblocks_width * 429 (uint64_t)prec->nb_codeblocks_height, 430 sizeof(*prec->cblk)); 431 if (!prec->cblk) 432 return AVERROR(ENOMEM); 433 for (cblkno = 0; cblkno < prec->nb_codeblocks_width * prec->nb_codeblocks_height; cblkno++) { 434 Jpeg2000Cblk *cblk = prec->cblk + cblkno; 435 uint16_t Cx0, Cy0; 436 437 /* Compute coordinates of codeblocks */ 438 /* Compute Cx0*/ 439 Cx0 = (prec->coord[0][0] >> band->log2_cblk_width) << band->log2_cblk_width; 440 Cx0 = Cx0 + ((cblkno % prec->nb_codeblocks_width) << band->log2_cblk_width); 441 cblk->coord[0][0] = FFMAX(Cx0, prec->coord[0][0]); 442 443 /* Compute Cy0*/ 444 Cy0 = (prec->coord[1][0] >> band->log2_cblk_height) << band->log2_cblk_height; 445 Cy0 = Cy0 + ((cblkno / prec->nb_codeblocks_width) << band->log2_cblk_height); 446 cblk->coord[1][0] = FFMAX(Cy0, prec->coord[1][0]); 447 448 /* Compute Cx1 */ 449 cblk->coord[0][1] = FFMIN(Cx0 + (1 << band->log2_cblk_width), 450 prec->coord[0][1]); 451 452 /* Compute Cy1 */ 453 cblk->coord[1][1] = FFMIN(Cy0 + (1 << band->log2_cblk_height), 454 prec->coord[1][1]); 455 /* Update code-blocks coordinates according sub-band position */ 456 if ((bandno + !!reslevelno) & 1) { 457 cblk->coord[0][0] += comp->reslevel[reslevelno-1].coord[0][1] - 458 comp->reslevel[reslevelno-1].coord[0][0]; 459 cblk->coord[0][1] += comp->reslevel[reslevelno-1].coord[0][1] - 460 comp->reslevel[reslevelno-1].coord[0][0]; 461 } 462 if ((bandno + !!reslevelno) & 2) { 463 cblk->coord[1][0] += comp->reslevel[reslevelno-1].coord[1][1] - 464 comp->reslevel[reslevelno-1].coord[1][0]; 465 cblk->coord[1][1] += comp->reslevel[reslevelno-1].coord[1][1] - 466 comp->reslevel[reslevelno-1].coord[1][0]; 467 } 468 469 cblk->zero = 0; 470 cblk->lblock = 3; 471 cblk->length = 0; 472 cblk->lengthinc = 0; 473 cblk->npasses = 0; 474 } 475 } 476 } 477 } 478 return 0; 479} 480 481void ff_jpeg2000_reinit(Jpeg2000Component *comp, Jpeg2000CodingStyle *codsty) 482{ 483 int reslevelno, bandno, cblkno, precno; 484 for (reslevelno = 0; reslevelno < codsty->nreslevels; reslevelno++) { 485 Jpeg2000ResLevel *rlevel = comp->reslevel + reslevelno; 486 for (bandno = 0; bandno < rlevel->nbands; bandno++) { 487 Jpeg2000Band *band = rlevel->band + bandno; 488 for(precno = 0; precno < rlevel->num_precincts_x * rlevel->num_precincts_y; precno++) { 489 Jpeg2000Prec *prec = band->prec + precno; 490 tag_tree_zero(prec->zerobits, prec->nb_codeblocks_width, prec->nb_codeblocks_height); 491 tag_tree_zero(prec->cblkincl, prec->nb_codeblocks_width, prec->nb_codeblocks_height); 492 for (cblkno = 0; cblkno < prec->nb_codeblocks_width * prec->nb_codeblocks_height; cblkno++) { 493 Jpeg2000Cblk *cblk = prec->cblk + cblkno; 494 cblk->length = 0; 495 cblk->lblock = 3; 496 } 497 } 498 } 499 } 500} 501 502void ff_jpeg2000_cleanup(Jpeg2000Component *comp, Jpeg2000CodingStyle *codsty) 503{ 504 int reslevelno, bandno, precno; 505 for (reslevelno = 0; 506 comp->reslevel && reslevelno < codsty->nreslevels; 507 reslevelno++) { 508 Jpeg2000ResLevel *reslevel; 509 510 if (!comp->reslevel) 511 continue; 512 513 reslevel = comp->reslevel + reslevelno; 514 for (bandno = 0; bandno < reslevel->nbands; bandno++) { 515 Jpeg2000Band *band; 516 517 if (!reslevel->band) 518 continue; 519 520 band = reslevel->band + bandno; 521 for (precno = 0; precno < reslevel->num_precincts_x * reslevel->num_precincts_y; precno++) { 522 if (band->prec) { 523 Jpeg2000Prec *prec = band->prec + precno; 524 av_freep(&prec->zerobits); 525 av_freep(&prec->cblkincl); 526 av_freep(&prec->cblk); 527 } 528 } 529 530 av_freep(&band->prec); 531 } 532 av_freep(&reslevel->band); 533 } 534 535 ff_dwt_destroy(&comp->dwt); 536 av_freep(&comp->reslevel); 537 av_freep(&comp->i_data); 538 av_freep(&comp->f_data); 539} 540