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FFmpeg/libavcodec/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. 

  23. /**

  24.  * @file

  25.  * JPEG 2000 image encoder and decoder common functions

  26.  */

  27. 

  28. #include "libavutil/common.h"

  29. #include "libavutil/mem.h"

  30. #include "avcodec.h"

  31. #include "jpeg2000.h"

  32. 

  33. #define SHL(a, n) ((n) >= 0 ? (a) << (n) : (a) >> -(n))

  34. 

  35. /* tag tree routines */

  36. 

  37. /* allocate the memory for tag tree */

  38. static int32_t tag_tree_size(uint16_t w, uint16_t h)

  39. {

  40.     uint32_t res = 0;

  41.     while (w > 1 || h > 1) {

  42.         res += w * h;

  43.         if (res + 1 >= INT32_MAX)

  44.             return -1;

  45.         w = (w + 1) >> 1;

  46.         h = (h + 1) >> 1;

  47.     }

  48.     return (int32_t)(res + 1);

  49. }

  50. 

  51. static Jpeg2000TgtNode *ff_jpeg2000_tag_tree_init(int w, int h)

  52. {

  53.     int pw = w, ph = h;

  54.     Jpeg2000TgtNode *res, *t, *t2;

  55.     int32_t tt_size;

  56. 

  57.     tt_size = tag_tree_size(w, h);

  58.     if (tt_size == -1)

  59.         return NULL;

  60. 

  61.     t = res = av_mallocz_array(tt_size, sizeof(*t));

  62.     if (!res)

  63.         return NULL;

  64. 

  65.     while (w > 1 || h > 1) {

  66.         int i, j;

  67.         pw = w;

  68.         ph = h;

  69. 

  70.         w  = (w + 1) >> 1;

  71.         h  = (h + 1) >> 1;

  72.         t2 = t + pw * ph;

  73. 

  74.         for (i = 0; i < ph; i++)

  75.             for (j = 0; j < pw; j++)

  76.                 t[i * pw + j].parent = &t2[(i >> 1) * w + (j >> 1)];

  77. 

  78.         t = t2;

  79.     }

  80.     t[0].parent = NULL;

  81.     return res;

  82. }

  83. 

  84. uint8_t ff_jpeg2000_sigctxno_lut[256][4];

  85. 

  86. static int getsigctxno(int flag, int bandno)

  87. {

  88.     int h, v, d;

  89. 

  90.     h = ((flag & JPEG2000_T1_SIG_E)  ? 1 : 0) +

  91.         ((flag & JPEG2000_T1_SIG_W)  ? 1 : 0);

  92.     v = ((flag & JPEG2000_T1_SIG_N)  ? 1 : 0) +

  93.         ((flag & JPEG2000_T1_SIG_S)  ? 1 : 0);

  94.     d = ((flag & JPEG2000_T1_SIG_NE) ? 1 : 0) +

  95.         ((flag & JPEG2000_T1_SIG_NW) ? 1 : 0) +

  96.         ((flag & JPEG2000_T1_SIG_SE) ? 1 : 0) +

  97.         ((flag & JPEG2000_T1_SIG_SW) ? 1 : 0);

  98.     if (bandno < 3) {

  99.         if (bandno == 1)

  100.             FFSWAP(int, h, v);

  101.         if (h == 2)

  102.             return 8;

  103.         if (h == 1) {

  104.             if (v >= 1)

  105.                 return 7;

  106.             if (d >= 1)

  107.                 return 6;

  108.             return 5;

  109.         }

  110.         if (v == 2)

  111.             return 4;

  112.         if (v == 1)

  113.             return 3;

  114.         if (d >= 2)

  115.             return 2;

  116.         if (d == 1)

  117.             return 1;

  118.     } else {

  119.         if (d >= 3)

  120.             return 8;

  121.         if (d == 2) {

  122.             if (h + v >= 1)

  123.                 return 7;

  124.             return 6;

  125.         }

  126.         if (d == 1) {

  127.             if (h + v >= 2)

  128.                 return 5;

  129.             if (h + v == 1)

  130.                 return 4;

  131.             return 3;

  132.         }

  133.         if (h + v >= 2)

  134.             return 2;

  135.         if (h + v == 1)

  136.             return 1;

  137.     }

  138.     return 0;

  139. }

  140. 

  141. uint8_t ff_jpeg2000_sgnctxno_lut[16][16], ff_jpeg2000_xorbit_lut[16][16];

  142. 

  143. static const int contribtab[3][3] = { {  0, -1,  1 }, { -1, -1,  0 }, {  1,  0,  1 } };

  144. static const int  ctxlbltab[3][3] = { { 13, 12, 11 }, { 10,  9, 10 }, { 11, 12, 13 } };

  145. static const int  xorbittab[3][3] = { {  1,  1,  1 }, {  1,  0,  0 }, {  0,  0,  0 } };

  146. 

  147. static int getsgnctxno(int flag, uint8_t *xorbit)

  148. {

  149.     int vcontrib, hcontrib;

  150. 

  151.     hcontrib = contribtab[flag & JPEG2000_T1_SIG_E ? flag & JPEG2000_T1_SGN_E ? 1 : 2 : 0]

  152.                          [flag & JPEG2000_T1_SIG_W ? flag & JPEG2000_T1_SGN_W ? 1 : 2 : 0] + 1;

  153.     vcontrib = contribtab[flag & JPEG2000_T1_SIG_S ? flag & JPEG2000_T1_SGN_S ? 1 : 2 : 0]

  154.                          [flag & JPEG2000_T1_SIG_N ? flag & JPEG2000_T1_SGN_N ? 1 : 2 : 0] + 1;

  155.     *xorbit = xorbittab[hcontrib][vcontrib];

  156. 

  157.     return ctxlbltab[hcontrib][vcontrib];

  158. }

  159. 

  160. void ff_jpeg2000_init_tier1_luts(void)

  161. {

  162.     int i, j;

  163.     for (i = 0; i < 256; i++)

  164.         for (j = 0; j < 4; j++)

  165.             ff_jpeg2000_sigctxno_lut[i][j] = getsigctxno(i, j);

  166.     for (i = 0; i < 16; i++)

  167.         for (j = 0; j < 16; j++)

  168.             ff_jpeg2000_sgnctxno_lut[i][j] =

  169.                 getsgnctxno(i + (j << 8), &ff_jpeg2000_xorbit_lut[i][j]);

  170. }

  171. 

  172. void ff_jpeg2000_set_significance(Jpeg2000T1Context *t1, int x, int y,

  173.                                   int negative)

  174. {

  175.     x++;

  176.     y++;

  177.     t1->flags[y][x] |= JPEG2000_T1_SIG;

  178.     if (negative) {

  179.         t1->flags[y][x + 1] |= JPEG2000_T1_SIG_W | JPEG2000_T1_SGN_W;

  180.         t1->flags[y][x - 1] |= JPEG2000_T1_SIG_E | JPEG2000_T1_SGN_E;

  181.         t1->flags[y + 1][x] |= JPEG2000_T1_SIG_N | JPEG2000_T1_SGN_N;

  182.         t1->flags[y - 1][x] |= JPEG2000_T1_SIG_S | JPEG2000_T1_SGN_S;

  183.     } else {

  184.         t1->flags[y][x + 1] |= JPEG2000_T1_SIG_W;

  185.         t1->flags[y][x - 1] |= JPEG2000_T1_SIG_E;

  186.         t1->flags[y + 1][x] |= JPEG2000_T1_SIG_N;

  187.         t1->flags[y - 1][x] |= JPEG2000_T1_SIG_S;

  188.     }

  189.     t1->flags[y + 1][x + 1] |= JPEG2000_T1_SIG_NW;

  190.     t1->flags[y + 1][x - 1] |= JPEG2000_T1_SIG_NE;

  191.     t1->flags[y - 1][x + 1] |= JPEG2000_T1_SIG_SW;

  192.     t1->flags[y - 1][x - 1] |= JPEG2000_T1_SIG_SE;

  193. }

  194. 

  195. static const uint8_t lut_gain[2][4] = { { 0, 0, 0, 0 }, { 0, 1, 1, 2 } };

  196. 

  197. int ff_jpeg2000_init_component(Jpeg2000Component *comp,

  198.                                Jpeg2000CodingStyle *codsty,

  199.                                Jpeg2000QuantStyle *qntsty,

  200.                                int cbps, int dx, int dy,

  201.                                AVCodecContext *avctx)

  202. {

  203.     uint8_t log2_band_prec_width, log2_band_prec_height;

  204.     int reslevelno, bandno, gbandno = 0, ret, i, j;

  205.     uint32_t csize;

  206. 

  207.     if (!codsty->nreslevels2decode) {

  208.         av_log(avctx, AV_LOG_ERROR, "nreslevels2decode uninitialized\n");

  209.         return AVERROR_INVALIDDATA;

  210.     }

  211. 

  212.     if (ret = ff_jpeg2000_dwt_init(&comp->dwt, comp->coord,

  213.                                    codsty->nreslevels2decode - 1,

  214.                                    codsty->transform))

  215.         return ret;

  216.     // component size comp->coord is uint16_t so ir cannot overflow

  217.     csize = (comp->coord[0][1] - comp->coord[0][0]) *

  218.             (comp->coord[1][1] - comp->coord[1][0]);

  219. 

  220.     if (codsty->transform == FF_DWT97) {

  221.         comp->i_data = NULL;

  222.         comp->f_data = av_malloc_array(csize, sizeof(*comp->f_data));

  223.         if (!comp->f_data)

  224.             return AVERROR(ENOMEM);

  225.     } else {

  226.         comp->f_data = NULL;

  227.         comp->i_data = av_malloc_array(csize, sizeof(*comp->i_data));

  228.         if (!comp->i_data)

  229.             return AVERROR(ENOMEM);

  230.     }

  231.     comp->reslevel = av_malloc_array(codsty->nreslevels, sizeof(*comp->reslevel));

  232.     if (!comp->reslevel)

  233.         return AVERROR(ENOMEM);

  234.     /* LOOP on resolution levels */

  235.     for (reslevelno = 0; reslevelno < codsty->nreslevels; reslevelno++) {

  236.         int declvl = codsty->nreslevels - reslevelno;    // N_L -r see  ISO/IEC 15444-1:2002 B.5

  237.         Jpeg2000ResLevel *reslevel = comp->reslevel + reslevelno;

  238. 

  239.         /* Compute borders for each resolution level.

  240.          * Computation of trx_0, trx_1, try_0 and try_1.

  241.          * see ISO/IEC 15444-1:2002 eq. B.5 and B-14 */

  242.         for (i = 0; i < 2; i++)

  243.             for (j = 0; j < 2; j++)

  244.                 reslevel->coord[i][j] =

  245.                     ff_jpeg2000_ceildivpow2(comp->coord_o[i][j], declvl - 1);

  246.         // update precincts size: 2^n value

  247.         reslevel->log2_prec_width  = codsty->log2_prec_widths[reslevelno];

  248.         reslevel->log2_prec_height = codsty->log2_prec_heights[reslevelno];

  249. 

  250.         /* Number of bands for each resolution level */

  251.         if (reslevelno == 0)

  252.             reslevel->nbands = 1;

  253.         else

  254.             reslevel->nbands = 3;

  255. 

  256.         /* Number of precincts wich span the tile for resolution level reslevelno

  257.          * see B.6 in ISO/IEC 15444-1:2002 eq. B-16

  258.          * num_precincts_x = |- trx_1 / 2 ^ log2_prec_width) -| - (trx_0 / 2 ^ log2_prec_width)

  259.          * num_precincts_y = |- try_1 / 2 ^ log2_prec_width) -| - (try_0 / 2 ^ log2_prec_width)

  260.          * for Dcinema profiles in JPEG 2000

  261.          * num_precincts_x = |- trx_1 / 2 ^ log2_prec_width) -|

  262.          * num_precincts_y = |- try_1 / 2 ^ log2_prec_width) -| */

  263.         if (reslevel->coord[0][1] == reslevel->coord[0][0])

  264.             reslevel->num_precincts_x = 0;

  265.         else

  266.             reslevel->num_precincts_x =

  267.                 ff_jpeg2000_ceildivpow2(reslevel->coord[0][1],

  268.                                         reslevel->log2_prec_width) -

  269.                 (reslevel->coord[0][0] >> reslevel->log2_prec_width);

  270. 

  271.         if (reslevel->coord[1][1] == reslevel->coord[1][0])

  272.             reslevel->num_precincts_y = 0;

  273.         else

  274.             reslevel->num_precincts_y =

  275.                 ff_jpeg2000_ceildivpow2(reslevel->coord[1][1],

  276.                                         reslevel->log2_prec_height) -

  277.                 (reslevel->coord[1][0] >> reslevel->log2_prec_height);

  278. 

  279.         reslevel->band = av_malloc_array(reslevel->nbands, sizeof(*reslevel->band));

  280.         if (!reslevel->band)

  281.             return AVERROR(ENOMEM);

  282. 

  283.         for (bandno = 0; bandno < reslevel->nbands; bandno++, gbandno++) {

  284.             Jpeg2000Band *band = reslevel->band + bandno;

  285.             int cblkno, precno;

  286.             int nb_precincts;

  287. 

  288.             /* TODO: Implementation of quantization step not finished,

  289.              * see ISO/IEC 15444-1:2002 E.1 and A.6.4. */

  290.             switch (qntsty->quantsty) {

  291.                 uint8_t gain;

  292.                 int numbps;

  293.             case JPEG2000_QSTY_NONE:

  294.                 /* TODO: to verify. No quantization in this case */

  295.                 band->f_stepsize = 1;

  296.                 break;

  297.             case JPEG2000_QSTY_SI:

  298.                 /*TODO: Compute formula to implement. */

  299.                 numbps = cbps +

  300.                          lut_gain[codsty->transform == FF_DWT53][bandno + (reslevelno > 0)];

  301.                 band->f_stepsize = SHL(2048 + qntsty->mant[gbandno],

  302.                                        2 + numbps - qntsty->expn[gbandno]);

  303.                 break;

  304.             case JPEG2000_QSTY_SE:

  305.                 /* Exponent quantization step.

  306.                  * Formula:

  307.                  * delta_b = 2 ^ (R_b - expn_b) * (1 + (mant_b / 2 ^ 11))

  308.                  * R_b = R_I + log2 (gain_b )

  309.                  * see ISO/IEC 15444-1:2002 E.1.1 eqn. E-3 and E-4 */

  310.                 /* TODO/WARN: value of log2 (gain_b ) not taken into account

  311.                  * but it works (compared to OpenJPEG). Why?

  312.                  * Further investigation needed. */

  313.                 gain            = cbps;

  314.                 band->f_stepsize  = pow(2.0, gain - qntsty->expn[gbandno]);

  315.                 band->f_stepsize *= qntsty->mant[gbandno] / 2048.0 + 1.0;

  316.                 break;

  317.             default:

  318.                 band->f_stepsize = 0;

  319.                 av_log(avctx, AV_LOG_ERROR, "Unknown quantization format\n");

  320.                 break;

  321.             }

  322.             /* FIXME: In openjepg code stespize = stepsize * 0.5. Why?

  323.              * If not set output of entropic decoder is not correct. */

  324.             if (!av_codec_is_encoder(avctx->codec))

  325.                 band->f_stepsize *= 0.5;

  326. 

  327.             band->i_stepsize = band->f_stepsize * (1 << 16);

  328. 

  329.             /* computation of tbx_0, tbx_1, tby_0, tby_1

  330.              * see ISO/IEC 15444-1:2002 B.5 eq. B-15 and tbl B.1

  331.              * codeblock width and height is computed for

  332.              * DCI JPEG 2000 codeblock_width = codeblock_width = 32 = 2 ^ 5 */

  333.             if (reslevelno == 0) {

  334.                 /* for reslevelno = 0, only one band, x0_b = y0_b = 0 */

  335.                 for (i = 0; i < 2; i++)

  336.                     for (j = 0; j < 2; j++)

  337.                         band->coord[i][j] =

  338.                             ff_jpeg2000_ceildivpow2(comp->coord_o[i][j] - comp->coord_o[i][0],

  339.                                                     declvl - 1);

  340.                 log2_band_prec_width  = reslevel->log2_prec_width;

  341.                 log2_band_prec_height = reslevel->log2_prec_height;

  342.                 /* see ISO/IEC 15444-1:2002 eq. B-17 and eq. B-15 */

  343.                 band->log2_cblk_width  = FFMIN(codsty->log2_cblk_width,

  344.                                                reslevel->log2_prec_width);

  345.                 band->log2_cblk_height = FFMIN(codsty->log2_cblk_height,

  346.                                                reslevel->log2_prec_height);

  347.             } else {

  348.                 /* 3 bands x0_b = 1 y0_b = 0; x0_b = 0 y0_b = 1; x0_b = y0_b = 1 */

  349.                 /* x0_b and y0_b are computed with ((bandno + 1 >> i) & 1) */

  350.                 for (i = 0; i < 2; i++)

  351.                     for (j = 0; j < 2; j++)

  352.                         /* Formula example for tbx_0 = ceildiv((tcx_0 - 2 ^ (declvl - 1) * x0_b) / declvl) */

  353.                         band->coord[i][j] =

  354.                             ff_jpeg2000_ceildivpow2(comp->coord_o[i][j] - comp->coord_o[i][0] -

  355.                                                     (((bandno + 1 >> i) & 1) << declvl - 1),

  356.                                                     declvl);

  357.                 /* TODO: Manage case of 3 band offsets here or

  358.                  * in coding/decoding function? */

  359. 

  360.                 /* see ISO/IEC 15444-1:2002 eq. B-17 and eq. B-15 */

  361.                 band->log2_cblk_width  = FFMIN(codsty->log2_cblk_width,

  362.                                                reslevel->log2_prec_width - 1);

  363.                 band->log2_cblk_height = FFMIN(codsty->log2_cblk_height,

  364.                                                reslevel->log2_prec_height - 1);

  365. 

  366.                 log2_band_prec_width  = reslevel->log2_prec_width  - 1;

  367.                 log2_band_prec_height = reslevel->log2_prec_height - 1;

  368.             }

  369. 

  370.             for (j = 0; j < 2; j++)

  371.                 band->coord[0][j] = ff_jpeg2000_ceildiv(band->coord[0][j], dx);

  372.             for (j = 0; j < 2; j++)

  373.                 band->coord[1][j] = ff_jpeg2000_ceildiv(band->coord[1][j], dy);

  374. 

  375.             band->prec = av_malloc_array(reslevel->num_precincts_x *

  376.                                          reslevel->num_precincts_y,

  377.                                          sizeof(*band->prec));

  378.             if (!band->prec)

  379.                 return AVERROR(ENOMEM);

  380. 

  381.             nb_precincts = reslevel->num_precincts_x * reslevel->num_precincts_y;

  382. 

  383.             for (precno = 0; precno < nb_precincts; precno++) {

  384.                 Jpeg2000Prec *prec = band->prec + precno;

  385. 

  386.                 /* TODO: Explain formula for JPEG200 DCINEMA. */

  387.                 /* TODO: Verify with previous count of codeblocks per band */

  388. 

  389.                 /* Compute P_x0 */

  390.                 prec->coord[0][0] = (precno % reslevel->num_precincts_x) *

  391.                                     (1 << log2_band_prec_width);

  392.                 prec->coord[0][0] = FFMAX(prec->coord[0][0], band->coord[0][0]);

  393. 

  394.                 /* Compute P_y0 */

  395.                 prec->coord[1][0] = (precno / reslevel->num_precincts_x) *

  396.                                     (1 << log2_band_prec_height);

  397.                 prec->coord[1][0] = FFMAX(prec->coord[1][0], band->coord[1][0]);

  398. 

  399.                 /* Compute P_x1 */

  400.                 prec->coord[0][1] = prec->coord[0][0] +

  401.                                     (1 << log2_band_prec_width);

  402.                 prec->coord[0][1] = FFMIN(prec->coord[0][1], band->coord[0][1]);

  403. 

  404.                 /* Compute P_y1 */

  405.                 prec->coord[1][1] = prec->coord[1][0] +

  406.                                     (1 << log2_band_prec_height);

  407.                 prec->coord[1][1] = FFMIN(prec->coord[1][1], band->coord[1][1]);

  408. 

  409.                 prec->nb_codeblocks_width =

  410.                     ff_jpeg2000_ceildivpow2(prec->coord[0][1] -

  411.                                             prec->coord[0][0],

  412.                                             band->log2_cblk_width);

  413.                 prec->nb_codeblocks_height =

  414.                     ff_jpeg2000_ceildivpow2(prec->coord[1][1] -

  415.                                             prec->coord[1][0],

  416.                                             band->log2_cblk_height);

  417. 

  418.                 /* Tag trees initialization */

  419.                 prec->cblkincl =

  420.                     ff_jpeg2000_tag_tree_init(prec->nb_codeblocks_width,

  421.                                               prec->nb_codeblocks_height);

  422.                 if (!prec->cblkincl)

  423.                     return AVERROR(ENOMEM);

  424. 

  425.                 prec->zerobits =

  426.                     ff_jpeg2000_tag_tree_init(prec->nb_codeblocks_width,

  427.                                               prec->nb_codeblocks_height);

  428.                 if (!prec->zerobits)

  429.                     return AVERROR(ENOMEM);

  430. 

  431.                 prec->cblk = av_mallocz_array(prec->nb_codeblocks_width *

  432.                                               prec->nb_codeblocks_height,

  433.                                               sizeof(*prec->cblk));

  434.                 if (!prec->cblk)

  435.                     return AVERROR(ENOMEM);

  436.                 for (cblkno = 0; cblkno < prec->nb_codeblocks_width * prec->nb_codeblocks_height; cblkno++) {

  437.                     Jpeg2000Cblk *cblk = prec->cblk + cblkno;

  438.                     uint16_t Cx0, Cy0;

  439. 

  440.                     /* Compute coordinates of codeblocks */

  441.                     /* Compute Cx0*/

  442.                     Cx0 = (prec->coord[0][0] >> band->log2_cblk_width) << band->log2_cblk_width;

  443.                     Cx0 = Cx0 + ((cblkno % prec->nb_codeblocks_width)  << band->log2_cblk_width);

  444.                     cblk->coord[0][0] = FFMAX(Cx0, prec->coord[0][0]);

  445. 

  446.                     /* Compute Cy0*/

  447.                     Cy0 = (prec->coord[1][0] >> band->log2_cblk_height) << band->log2_cblk_height;

  448.                     Cy0 = Cy0 + ((cblkno / prec->nb_codeblocks_width)   << band->log2_cblk_height);

  449.                     cblk->coord[1][0] = FFMAX(Cy0, prec->coord[1][0]);

  450. 

  451.                     /* Compute Cx1 */

  452.                     cblk->coord[0][1] = FFMIN(Cx0 + (1 << band->log2_cblk_width),

  453.                                               prec->coord[0][1]);

  454. 

  455.                     /* Compute Cy1 */

  456.                     cblk->coord[1][1] = FFMIN(Cy0 + (1 << band->log2_cblk_height),

  457.                                               prec->coord[1][1]);

  458.                     /* Update code-blocks coordinates according sub-band position */

  459.                     if ((bandno + !!reslevelno) & 1) {

  460.                         cblk->coord[0][0] += comp->reslevel[reslevelno-1].coord[0][1] -

  461.                                              comp->reslevel[reslevelno-1].coord[0][0];

  462.                         cblk->coord[0][1] += comp->reslevel[reslevelno-1].coord[0][1] -

  463.                                              comp->reslevel[reslevelno-1].coord[0][0];

  464.                     }

  465.                     if ((bandno + !!reslevelno) & 2) {

  466.                         cblk->coord[1][0] += comp->reslevel[reslevelno-1].coord[1][1] -

  467.                                              comp->reslevel[reslevelno-1].coord[1][0];

  468.                         cblk->coord[1][1] += comp->reslevel[reslevelno-1].coord[1][1] -

  469.                                              comp->reslevel[reslevelno-1].coord[1][0];

  470.                     }

  471. 

  472.                     cblk->zero      = 0;

  473.                     cblk->lblock    = 3;

  474.                     cblk->length    = 0;

  475.                     cblk->lengthinc = 0;

  476.                     cblk->npasses   = 0;

  477.                 }

  478.             }

  479.         }

  480.     }

  481.     return 0;

  482. }

  483. 

  484. void ff_jpeg2000_cleanup(Jpeg2000Component *comp, Jpeg2000CodingStyle *codsty)

  485. {

  486.     int reslevelno, bandno, precno;

  487.     for (reslevelno = 0;

  488.          comp->reslevel && reslevelno < codsty->nreslevels;

  489.          reslevelno++) {

  490.         Jpeg2000ResLevel *reslevel = comp->reslevel + reslevelno;

  491. 

  492.         for (bandno = 0; bandno < reslevel->nbands; bandno++) {

  493.             Jpeg2000Band *band = reslevel->band + bandno;

  494.             for (precno = 0; precno < reslevel->num_precincts_x * reslevel->num_precincts_y; precno++) {

  495.                 Jpeg2000Prec *prec = band->prec + precno;

  496.                 av_freep(&prec->zerobits);

  497.                 av_freep(&prec->cblkincl);

  498.                 av_freep(&prec->cblk);

  499.             }

  500. 

  501.             av_freep(&band->prec);

  502.         }

  503.         av_freep(&reslevel->band);

  504.     }

  505. 

  506.     ff_dwt_destroy(&comp->dwt);

  507.     av_freep(&comp->reslevel);

  508.     av_freep(&comp->i_data);

  509.     av_freep(&comp->f_data);

  510. }