GCC Code Coverage Report
Directory: ../../../ffmpeg/ Exec Total Coverage
File: src/libavcodec/jpeg2000.c Lines: 306 339 90.3 %
Date: 2019-11-22 03:34:36 Branches: 165 198 83.3 %

Line Branch Exec Source
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/imgutils.h"
32
#include "libavutil/mem.h"
33
#include "avcodec.h"
34
#include "internal.h"
35
#include "jpeg2000.h"
36
37
#define SHL(a, n) ((n) >= 0 ? (a) << (n) : (a) >> -(n))
38
39
/* tag tree routines */
40
41
/* allocate the memory for tag tree */
42
305734
static int32_t tag_tree_size(int w, int h)
43
{
44
305734
    int64_t res = 0;
45

547428
    while (w > 1 || h > 1) {
46
241694
        res += w * (int64_t)h;
47
241694
        av_assert0(res + 1 < INT32_MAX);
48
241694
        w = (w + 1) >> 1;
49
241694
        h = (h + 1) >> 1;
50
    }
51
305734
    return (int32_t)(res + 1);
52
}
53
54
157534
static Jpeg2000TgtNode *ff_jpeg2000_tag_tree_init(int w, int h)
55
{
56
157534
    int pw = w, ph = h;
57
    Jpeg2000TgtNode *res, *t, *t2;
58
    int32_t tt_size;
59
60
157534
    tt_size = tag_tree_size(w, h);
61
62
157534
    t = res = av_mallocz_array(tt_size, sizeof(*t));
63
157534
    if (!res)
64
        return NULL;
65
66

284028
    while (w > 1 || h > 1) {
67
        int i, j;
68
126494
        pw = w;
69
126494
        ph = h;
70
71
126494
        w  = (w + 1) >> 1;
72
126494
        h  = (h + 1) >> 1;
73
126494
        t2 = t + pw * ph;
74
75
445158
        for (i = 0; i < ph; i++)
76
1408754
            for (j = 0; j < pw; j++)
77
1090090
                t[i * pw + j].parent = &t2[(i >> 1) * w + (j >> 1)];
78
79
126494
        t = t2;
80
    }
81
157534
    t[0].parent = NULL;
82
157534
    return res;
83
}
84
85
148200
static void tag_tree_zero(Jpeg2000TgtNode *t, int w, int h)
86
{
87
148200
    int i, siz = tag_tree_size(w, h);
88
89
1291800
    for (i = 0; i < siz; i++) {
90
1143600
        t[i].val = 0;
91
1143600
        t[i].vis = 0;
92
    }
93
148200
}
94
95
uint8_t ff_jpeg2000_sigctxno_lut[256][4];
96
97
18432
static int getsigctxno(int flag, int bandno)
98
{
99
    int h, v, d;
100
101
18432
    h = ((flag & JPEG2000_T1_SIG_E)  ? 1 : 0) +
102
18432
        ((flag & JPEG2000_T1_SIG_W)  ? 1 : 0);
103
18432
    v = ((flag & JPEG2000_T1_SIG_N)  ? 1 : 0) +
104
18432
        ((flag & JPEG2000_T1_SIG_S)  ? 1 : 0);
105
18432
    d = ((flag & JPEG2000_T1_SIG_NE) ? 1 : 0) +
106
18432
        ((flag & JPEG2000_T1_SIG_NW) ? 1 : 0) +
107
18432
        ((flag & JPEG2000_T1_SIG_SE) ? 1 : 0) +
108
18432
        ((flag & JPEG2000_T1_SIG_SW) ? 1 : 0);
109
110
18432
    if (bandno < 3) {
111
13824
        if (bandno == 1)
112
4608
            FFSWAP(int, h, v);
113
13824
        if (h == 2) return 8;
114
10368
        if (h == 1) {
115
6912
            if (v >= 1) return 7;
116
1728
            if (d >= 1) return 6;
117
108
            return 5;
118
        }
119
3456
        if (v == 2) return 4;
120
2592
        if (v == 1) return 3;
121
864
        if (d >= 2) return 2;
122
270
        if (d == 1) return 1;
123
    } else {
124
4608
        if (d >= 3) return 8;
125
3168
        if (d == 2) {
126
1728
            if (h+v >= 1) return 7;
127
108
            return 6;
128
        }
129
1440
        if (d == 1) {
130
1152
            if (h+v >= 2) return 5;
131
360
            if (h+v == 1) return 4;
132
72
            return 3;
133
        }
134
288
        if (h+v >= 2) return 2;
135
90
        if (h+v == 1) return 1;
136
    }
137
72
    return 0;
138
}
139
140
uint8_t ff_jpeg2000_sgnctxno_lut[16][16], ff_jpeg2000_xorbit_lut[16][16];
141
142
static const int contribtab[3][3] = { {  0, -1,  1 }, { -1, -1,  0 }, {  1,  0,  1 } };
143
static const int  ctxlbltab[3][3] = { { 13, 12, 11 }, { 10,  9, 10 }, { 11, 12, 13 } };
144
static const int  xorbittab[3][3] = { {  1,  1,  1 }, {  1,  0,  0 }, {  0,  0,  0 } };
145
146
4608
static int getsgnctxno(int flag, uint8_t *xorbit)
147
{
148
    int vcontrib, hcontrib;
149
150

4608
    hcontrib = contribtab[flag & JPEG2000_T1_SIG_E ? flag & JPEG2000_T1_SGN_E ? 1 : 2 : 0]
151

4608
                         [flag & JPEG2000_T1_SIG_W ? flag & JPEG2000_T1_SGN_W ? 1 : 2 : 0] + 1;
152

4608
    vcontrib = contribtab[flag & JPEG2000_T1_SIG_S ? flag & JPEG2000_T1_SGN_S ? 1 : 2 : 0]
153

4608
                         [flag & JPEG2000_T1_SIG_N ? flag & JPEG2000_T1_SGN_N ? 1 : 2 : 0] + 1;
154
4608
    *xorbit = xorbittab[hcontrib][vcontrib];
155
156
4608
    return ctxlbltab[hcontrib][vcontrib];
157
}
158
159
18
void av_cold ff_jpeg2000_init_tier1_luts(void)
160
{
161
    int i, j;
162
4626
    for (i = 0; i < 256; i++)
163
23040
        for (j = 0; j < 4; j++)
164
18432
            ff_jpeg2000_sigctxno_lut[i][j] = getsigctxno(i, j);
165
306
    for (i = 0; i < 16; i++)
166
4896
        for (j = 0; j < 16; j++)
167
4608
            ff_jpeg2000_sgnctxno_lut[i][j] =
168
4608
                getsgnctxno(i + (j << 8), &ff_jpeg2000_xorbit_lut[i][j]);
169
18
}
170
171
97248712
void ff_jpeg2000_set_significance(Jpeg2000T1Context *t1, int x, int y,
172
                                  int negative)
173
{
174
97248712
    x++;
175
97248712
    y++;
176
97248712
    t1->flags[(y) * t1->stride + x] |= JPEG2000_T1_SIG;
177
97248712
    if (negative) {
178
46117506
        t1->flags[(y) * t1->stride + x + 1] |= JPEG2000_T1_SIG_W | JPEG2000_T1_SGN_W;
179
46117506
        t1->flags[(y) * t1->stride + x - 1] |= JPEG2000_T1_SIG_E | JPEG2000_T1_SGN_E;
180
46117506
        t1->flags[(y + 1) * t1->stride + x] |= JPEG2000_T1_SIG_N | JPEG2000_T1_SGN_N;
181
46117506
        t1->flags[(y - 1) * t1->stride + x] |= JPEG2000_T1_SIG_S | JPEG2000_T1_SGN_S;
182
    } else {
183
51131206
        t1->flags[(y) * t1->stride + x + 1] |= JPEG2000_T1_SIG_W;
184
51131206
        t1->flags[(y) * t1->stride + x - 1] |= JPEG2000_T1_SIG_E;
185
51131206
        t1->flags[(y + 1) * t1->stride + x] |= JPEG2000_T1_SIG_N;
186
51131206
        t1->flags[(y - 1) * t1->stride + x] |= JPEG2000_T1_SIG_S;
187
    }
188
97248712
    t1->flags[(y + 1) * t1->stride + x + 1] |= JPEG2000_T1_SIG_NW;
189
97248712
    t1->flags[(y + 1) * t1->stride + x - 1] |= JPEG2000_T1_SIG_NE;
190
97248712
    t1->flags[(y - 1) * t1->stride + x + 1] |= JPEG2000_T1_SIG_SW;
191
97248712
    t1->flags[(y - 1) * t1->stride + x - 1] |= JPEG2000_T1_SIG_SE;
192
97248712
}
193
194
// static const uint8_t lut_gain[2][4] = { { 0, 0, 0, 0 }, { 0, 1, 1, 2 } }; (unused)
195
196
77336
static void init_band_stepsize(AVCodecContext *avctx,
197
                               Jpeg2000Band *band,
198
                               Jpeg2000CodingStyle *codsty,
199
                               Jpeg2000QuantStyle *qntsty,
200
                               int bandno, int gbandno, int reslevelno,
201
                               int cbps)
202
{
203
    /* TODO: Implementation of quantization step not finished,
204
     * see ISO/IEC 15444-1:2002 E.1 and A.6.4. */
205
77336
    switch (qntsty->quantsty) {
206
        uint8_t gain;
207
38532
    case JPEG2000_QSTY_NONE:
208
        /* TODO: to verify. No quantization in this case */
209
38532
        band->f_stepsize = 1;
210
38532
        break;
211
38804
    case JPEG2000_QSTY_SI:
212
        /*TODO: Compute formula to implement. */
213
//         numbps = cbps +
214
//                  lut_gain[codsty->transform == FF_DWT53][bandno + (reslevelno > 0)];
215
//         band->f_stepsize = SHL(2048 + qntsty->mant[gbandno],
216
//                                2 + numbps - qntsty->expn[gbandno]);
217
//         break;
218
    case JPEG2000_QSTY_SE:
219
        /* Exponent quantization step.
220
         * Formula:
221
         * delta_b = 2 ^ (R_b - expn_b) * (1 + (mant_b / 2 ^ 11))
222
         * R_b = R_I + log2 (gain_b )
223
         * see ISO/IEC 15444-1:2002 E.1.1 eqn. E-3 and E-4 */
224
38804
        gain            = cbps;
225
38804
        band->f_stepsize  = ff_exp2fi(gain - qntsty->expn[gbandno]);
226
38804
        band->f_stepsize *= qntsty->mant[gbandno] / 2048.0 + 1.0;
227
38804
        break;
228
    default:
229
        band->f_stepsize = 0;
230
        av_log(avctx, AV_LOG_ERROR, "Unknown quantization format\n");
231
        break;
232
    }
233
77336
    if (codsty->transform != FF_DWT53) {
234
38804
        int lband = 0;
235
38804
        switch (bandno + (reslevelno > 0)) {
236
24506
            case 1:
237
            case 2:
238
24506
                band->f_stepsize *= F_LFTG_X * 2;
239
24506
                lband = 1;
240
24506
                break;
241
12253
            case 3:
242
12253
                band->f_stepsize *= F_LFTG_X * F_LFTG_X * 4;
243
12253
                break;
244
        }
245
38804
        if (codsty->transform == FF_DWT97) {
246
128
            band->f_stepsize *= pow(F_LFTG_K, 2*(codsty->nreslevels2decode - reslevelno) + lband - 2);
247
        }
248
    }
249
250
77336
    if (band->f_stepsize > (INT_MAX >> 15)) {
251
        band->f_stepsize = 0;
252
        av_log(avctx, AV_LOG_ERROR, "stepsize out of range\n");
253
    }
254
255
77336
    band->i_stepsize = band->f_stepsize * (1 << 15);
256
257
    /* FIXME: In OpenJPEG code stepsize = stepsize * 0.5. Why?
258
     * If not set output of entropic decoder is not correct. */
259
77336
    if (!av_codec_is_encoder(avctx->codec))
260
75854
        band->f_stepsize *= 0.5;
261
77336
}
262
263
78767
static int init_prec(Jpeg2000Band *band,
264
                     Jpeg2000ResLevel *reslevel,
265
                     Jpeg2000Component *comp,
266
                     int precno, int bandno, int reslevelno,
267
                     int log2_band_prec_width,
268
                     int log2_band_prec_height)
269
{
270
78767
    Jpeg2000Prec *prec = band->prec + precno;
271
    int nb_codeblocks, cblkno;
272
273
78767
    prec->decoded_layers = 0;
274
275
    /* TODO: Explain formula for JPEG200 DCINEMA. */
276
    /* TODO: Verify with previous count of codeblocks per band */
277
278
    /* Compute P_x0 */
279
78767
    prec->coord[0][0] = ((band->coord[0][0] >> log2_band_prec_width) + precno % reslevel->num_precincts_x) *
280
                        (1 << log2_band_prec_width);
281
282
    /* Compute P_y0 */
283
78767
    prec->coord[1][0] = ((band->coord[1][0] >> log2_band_prec_height) + precno / reslevel->num_precincts_x) *
284
                        (1 << log2_band_prec_height);
285
286
    /* Compute P_x1 */
287
78767
    prec->coord[0][1] = prec->coord[0][0] +
288
78767
                        (1 << log2_band_prec_width);
289
78767
    prec->coord[0][0] = FFMAX(prec->coord[0][0], band->coord[0][0]);
290
78767
    prec->coord[0][1] = FFMIN(prec->coord[0][1], band->coord[0][1]);
291
292
    /* Compute P_y1 */
293
78767
    prec->coord[1][1] = prec->coord[1][0] +
294
78767
                        (1 << log2_band_prec_height);
295
78767
    prec->coord[1][0] = FFMAX(prec->coord[1][0], band->coord[1][0]);
296
78767
    prec->coord[1][1] = FFMIN(prec->coord[1][1], band->coord[1][1]);
297
298
78767
    prec->nb_codeblocks_width =
299
78767
        ff_jpeg2000_ceildivpow2(prec->coord[0][1],
300
78767
                                band->log2_cblk_width)
301
78767
        - (prec->coord[0][0] >> band->log2_cblk_width);
302
78767
    prec->nb_codeblocks_height =
303
78767
        ff_jpeg2000_ceildivpow2(prec->coord[1][1],
304
78767
                                band->log2_cblk_height)
305
78767
        - (prec->coord[1][0] >> band->log2_cblk_height);
306
307
308
    /* Tag trees initialization */
309
78767
    prec->cblkincl =
310
78767
        ff_jpeg2000_tag_tree_init(prec->nb_codeblocks_width,
311
                                  prec->nb_codeblocks_height);
312
78767
    if (!prec->cblkincl)
313
        return AVERROR(ENOMEM);
314
315
78767
    prec->zerobits =
316
78767
        ff_jpeg2000_tag_tree_init(prec->nb_codeblocks_width,
317
                                  prec->nb_codeblocks_height);
318
78767
    if (!prec->zerobits)
319
        return AVERROR(ENOMEM);
320
321
78767
    if (prec->nb_codeblocks_width * (uint64_t)prec->nb_codeblocks_height > INT_MAX) {
322
        prec->cblk = NULL;
323
        return AVERROR(ENOMEM);
324
    }
325
78767
    nb_codeblocks = prec->nb_codeblocks_width * prec->nb_codeblocks_height;
326
78767
    prec->cblk = av_mallocz_array(nb_codeblocks, sizeof(*prec->cblk));
327
78767
    if (!prec->cblk)
328
        return AVERROR(ENOMEM);
329
533858
    for (cblkno = 0; cblkno < nb_codeblocks; cblkno++) {
330
455091
        Jpeg2000Cblk *cblk = prec->cblk + cblkno;
331
        int Cx0, Cy0;
332
333
        /* Compute coordinates of codeblocks */
334
        /* Compute Cx0*/
335
455091
        Cx0 = ((prec->coord[0][0]) >> band->log2_cblk_width) << band->log2_cblk_width;
336
455091
        Cx0 = Cx0 + ((cblkno % prec->nb_codeblocks_width)  << band->log2_cblk_width);
337
455091
        cblk->coord[0][0] = FFMAX(Cx0, prec->coord[0][0]);
338
339
        /* Compute Cy0*/
340
455091
        Cy0 = ((prec->coord[1][0]) >> band->log2_cblk_height) << band->log2_cblk_height;
341
455091
        Cy0 = Cy0 + ((cblkno / prec->nb_codeblocks_width)   << band->log2_cblk_height);
342
455091
        cblk->coord[1][0] = FFMAX(Cy0, prec->coord[1][0]);
343
344
        /* Compute Cx1 */
345
455091
        cblk->coord[0][1] = FFMIN(Cx0 + (1 << band->log2_cblk_width),
346
                                  prec->coord[0][1]);
347
348
        /* Compute Cy1 */
349
455091
        cblk->coord[1][1] = FFMIN(Cy0 + (1 << band->log2_cblk_height),
350
                                  prec->coord[1][1]);
351
        /* Update code-blocks coordinates according sub-band position */
352
455091
        if ((bandno + !!reslevelno) & 1) {
353
300658
            cblk->coord[0][0] += comp->reslevel[reslevelno-1].coord[0][1] -
354
300658
                                 comp->reslevel[reslevelno-1].coord[0][0];
355
300658
            cblk->coord[0][1] += comp->reslevel[reslevelno-1].coord[0][1] -
356
300658
                                 comp->reslevel[reslevelno-1].coord[0][0];
357
        }
358
455091
        if ((bandno + !!reslevelno) & 2) {
359
300658
            cblk->coord[1][0] += comp->reslevel[reslevelno-1].coord[1][1] -
360
300658
                                 comp->reslevel[reslevelno-1].coord[1][0];
361
300658
            cblk->coord[1][1] += comp->reslevel[reslevelno-1].coord[1][1] -
362
300658
                                 comp->reslevel[reslevelno-1].coord[1][0];
363
        }
364
365
455091
        cblk->lblock    = 3;
366
455091
        cblk->length    = 0;
367
455091
        cblk->npasses   = 0;
368
    }
369
370
78767
    return 0;
371
}
372
373
77336
static int init_band(AVCodecContext *avctx,
374
                     Jpeg2000ResLevel *reslevel,
375
                     Jpeg2000Component *comp,
376
                     Jpeg2000CodingStyle *codsty,
377
                     Jpeg2000QuantStyle *qntsty,
378
                     int bandno, int gbandno, int reslevelno,
379
                     int cbps, int dx, int dy)
380
{
381
77336
    Jpeg2000Band *band = reslevel->band + bandno;
382
    uint8_t log2_band_prec_width, log2_band_prec_height;
383
77336
    int declvl = codsty->nreslevels - reslevelno;    // N_L -r see  ISO/IEC 15444-1:2002 B.5
384
    int precno;
385
    int nb_precincts;
386
    int i, j, ret;
387
388
77336
    init_band_stepsize(avctx, band, codsty, qntsty, bandno, gbandno, reslevelno, cbps);
389
390
    /* computation of tbx_0, tbx_1, tby_0, tby_1
391
     * see ISO/IEC 15444-1:2002 B.5 eq. B-15 and tbl B.1
392
     * codeblock width and height is computed for
393
     * DCI JPEG 2000 codeblock_width = codeblock_width = 32 = 2 ^ 5 */
394
77336
    if (reslevelno == 0) {
395
        /* for reslevelno = 0, only one band, x0_b = y0_b = 0 */
396
12219
        for (i = 0; i < 2; i++)
397
24438
            for (j = 0; j < 2; j++)
398
16292
                band->coord[i][j] =
399
16292
                    ff_jpeg2000_ceildivpow2(comp->coord_o[i][j],
400
                                            declvl - 1);
401
4073
        log2_band_prec_width  = reslevel->log2_prec_width;
402
4073
        log2_band_prec_height = reslevel->log2_prec_height;
403
        /* see ISO/IEC 15444-1:2002 eq. B-17 and eq. B-15 */
404
4073
        band->log2_cblk_width  = FFMIN(codsty->log2_cblk_width,
405
                                       reslevel->log2_prec_width);
406
4073
        band->log2_cblk_height = FFMIN(codsty->log2_cblk_height,
407
                                       reslevel->log2_prec_height);
408
    } else {
409
        /* 3 bands x0_b = 1 y0_b = 0; x0_b = 0 y0_b = 1; x0_b = y0_b = 1 */
410
        /* x0_b and y0_b are computed with ((bandno + 1 >> i) & 1) */
411
219789
        for (i = 0; i < 2; i++)
412
439578
            for (j = 0; j < 2; j++)
413
                /* Formula example for tbx_0 = ceildiv((tcx_0 - 2 ^ (declvl - 1) * x0_b) / declvl) */
414
293052
                band->coord[i][j] =
415
293052
                    ff_jpeg2000_ceildivpow2(comp->coord_o[i][j] -
416
293052
                                            (((bandno + 1 >> i) & 1LL) << declvl - 1),
417
                                            declvl);
418
        /* TODO: Manage case of 3 band offsets here or
419
         * in coding/decoding function? */
420
421
        /* see ISO/IEC 15444-1:2002 eq. B-17 and eq. B-15 */
422
73263
        band->log2_cblk_width  = FFMIN(codsty->log2_cblk_width,
423
                                       reslevel->log2_prec_width - 1);
424
73263
        band->log2_cblk_height = FFMIN(codsty->log2_cblk_height,
425
                                       reslevel->log2_prec_height - 1);
426
427
73263
        log2_band_prec_width  = reslevel->log2_prec_width  - 1;
428
73263
        log2_band_prec_height = reslevel->log2_prec_height - 1;
429
    }
430
431
77336
    if (reslevel->num_precincts_x * (uint64_t)reslevel->num_precincts_y > INT_MAX) {
432
        band->prec = NULL;
433
        return AVERROR(ENOMEM);
434
    }
435
77336
    nb_precincts = reslevel->num_precincts_x * reslevel->num_precincts_y;
436
77336
    band->prec = av_mallocz_array(nb_precincts, sizeof(*band->prec));
437
77336
    if (!band->prec)
438
        return AVERROR(ENOMEM);
439
440
156103
    for (precno = 0; precno < nb_precincts; precno++) {
441
78767
        ret = init_prec(band, reslevel, comp,
442
                        precno, bandno, reslevelno,
443
                        log2_band_prec_width, log2_band_prec_height);
444
78767
        if (ret < 0)
445
            return ret;
446
    }
447
448
77336
    return 0;
449
}
450
451
4073
int ff_jpeg2000_init_component(Jpeg2000Component *comp,
452
                               Jpeg2000CodingStyle *codsty,
453
                               Jpeg2000QuantStyle *qntsty,
454
                               int cbps, int dx, int dy,
455
                               AVCodecContext *avctx)
456
{
457
4073
    int reslevelno, bandno, gbandno = 0, ret, i, j;
458
    uint32_t csize;
459
460
4073
    if (codsty->nreslevels2decode <= 0) {
461
        av_log(avctx, AV_LOG_ERROR, "nreslevels2decode %d invalid or uninitialized\n", codsty->nreslevels2decode);
462
        return AVERROR_INVALIDDATA;
463
    }
464
465
4073
    if (ret = ff_jpeg2000_dwt_init(&comp->dwt, comp->coord,
466
4073
                                   codsty->nreslevels2decode - 1,
467
4073
                                   codsty->transform))
468
        return ret;
469
470
4073
    if (av_image_check_size(comp->coord[0][1] - comp->coord[0][0],
471
4073
                            comp->coord[1][1] - comp->coord[1][0], 0, avctx))
472
        return AVERROR_INVALIDDATA;
473
4073
    csize = (comp->coord[0][1] - comp->coord[0][0]) *
474
4073
            (comp->coord[1][1] - comp->coord[1][0]);
475
4073
    if (comp->coord[0][1] - comp->coord[0][0] > 32768 ||
476
4073
        comp->coord[1][1] - comp->coord[1][0] > 32768) {
477
        av_log(avctx, AV_LOG_ERROR, "component size too large\n");
478
        return AVERROR_PATCHWELCOME;
479
    }
480
481
4073
    if (codsty->transform == FF_DWT97) {
482
8
        csize += AV_INPUT_BUFFER_PADDING_SIZE / sizeof(*comp->f_data);
483
8
        comp->i_data = NULL;
484
8
        comp->f_data = av_mallocz_array(csize, sizeof(*comp->f_data));
485
8
        if (!comp->f_data)
486
            return AVERROR(ENOMEM);
487
    } else {
488
4065
        csize += AV_INPUT_BUFFER_PADDING_SIZE / sizeof(*comp->i_data);
489
4065
        comp->f_data = NULL;
490
4065
        comp->i_data = av_mallocz_array(csize, sizeof(*comp->i_data));
491
4065
        if (!comp->i_data)
492
            return AVERROR(ENOMEM);
493
    }
494
4073
    comp->reslevel = av_mallocz_array(codsty->nreslevels, sizeof(*comp->reslevel));
495
4073
    if (!comp->reslevel)
496
        return AVERROR(ENOMEM);
497
    /* LOOP on resolution levels */
498
32567
    for (reslevelno = 0; reslevelno < codsty->nreslevels; reslevelno++) {
499
28494
        int declvl = codsty->nreslevels - reslevelno;    // N_L -r see  ISO/IEC 15444-1:2002 B.5
500
28494
        Jpeg2000ResLevel *reslevel = comp->reslevel + reslevelno;
501
502
        /* Compute borders for each resolution level.
503
         * Computation of trx_0, trx_1, try_0 and try_1.
504
         * see ISO/IEC 15444-1:2002 eq. B.5 and B-14 */
505
85482
        for (i = 0; i < 2; i++)
506
170964
            for (j = 0; j < 2; j++)
507
113976
                reslevel->coord[i][j] =
508
113976
                    ff_jpeg2000_ceildivpow2(comp->coord_o[i][j], declvl - 1);
509
        // update precincts size: 2^n value
510
28494
        reslevel->log2_prec_width  = codsty->log2_prec_widths[reslevelno];
511
28494
        reslevel->log2_prec_height = codsty->log2_prec_heights[reslevelno];
512

28494
        if (!reslevel->log2_prec_width || !reslevel->log2_prec_height) {
513
            return AVERROR_INVALIDDATA;
514
        }
515
516
        /* Number of bands for each resolution level */
517
28494
        if (reslevelno == 0)
518
4073
            reslevel->nbands = 1;
519
        else
520
24421
            reslevel->nbands = 3;
521
522
        /* Number of precincts which span the tile for resolution level reslevelno
523
         * see B.6 in ISO/IEC 15444-1:2002 eq. B-16
524
         * num_precincts_x = |- trx_1 / 2 ^ log2_prec_width) -| - (trx_0 / 2 ^ log2_prec_width)
525
         * num_precincts_y = |- try_1 / 2 ^ log2_prec_width) -| - (try_0 / 2 ^ log2_prec_width)
526
         * for Dcinema profiles in JPEG 2000
527
         * num_precincts_x = |- trx_1 / 2 ^ log2_prec_width) -|
528
         * num_precincts_y = |- try_1 / 2 ^ log2_prec_width) -| */
529
28494
        if (reslevel->coord[0][1] == reslevel->coord[0][0])
530
            reslevel->num_precincts_x = 0;
531
        else
532
28494
            reslevel->num_precincts_x =
533
28494
                ff_jpeg2000_ceildivpow2(reslevel->coord[0][1],
534
28494
                                        reslevel->log2_prec_width) -
535
28494
                (reslevel->coord[0][0] >> reslevel->log2_prec_width);
536
537
28494
        if (reslevel->coord[1][1] == reslevel->coord[1][0])
538
            reslevel->num_precincts_y = 0;
539
        else
540
28494
            reslevel->num_precincts_y =
541
28494
                ff_jpeg2000_ceildivpow2(reslevel->coord[1][1],
542
28494
                                        reslevel->log2_prec_height) -
543
28494
                (reslevel->coord[1][0] >> reslevel->log2_prec_height);
544
545
28494
        reslevel->band = av_mallocz_array(reslevel->nbands, sizeof(*reslevel->band));
546
28494
        if (!reslevel->band)
547
            return AVERROR(ENOMEM);
548
549
28494
        if (reslevel->num_precincts_x * (uint64_t)reslevel->num_precincts_y * reslevel->nbands > avctx->max_pixels / sizeof(*reslevel->band->prec))
550
            return AVERROR(ENOMEM);
551
552
105830
        for (bandno = 0; bandno < reslevel->nbands; bandno++, gbandno++) {
553
77336
            ret = init_band(avctx, reslevel,
554
                            comp, codsty, qntsty,
555
                            bandno, gbandno, reslevelno,
556
                            cbps, dx, dy);
557
77336
            if (ret < 0)
558
                return ret;
559
        }
560
    }
561
4073
    return 0;
562
}
563
564
3900
void ff_jpeg2000_reinit(Jpeg2000Component *comp, Jpeg2000CodingStyle *codsty)
565
{
566
    int reslevelno, bandno, cblkno, precno;
567
31200
    for (reslevelno = 0; reslevelno < codsty->nreslevels; reslevelno++) {
568
27300
        Jpeg2000ResLevel *rlevel = comp->reslevel + reslevelno;
569
101400
        for (bandno = 0; bandno < rlevel->nbands; bandno++) {
570
74100
            Jpeg2000Band *band = rlevel->band + bandno;
571
148200
            for(precno = 0; precno < rlevel->num_precincts_x * rlevel->num_precincts_y; precno++) {
572
74100
                Jpeg2000Prec *prec = band->prec + precno;
573
74100
                tag_tree_zero(prec->zerobits, prec->nb_codeblocks_width, prec->nb_codeblocks_height);
574
74100
                tag_tree_zero(prec->cblkincl, prec->nb_codeblocks_width, prec->nb_codeblocks_height);
575
491100
                for (cblkno = 0; cblkno < prec->nb_codeblocks_width * prec->nb_codeblocks_height; cblkno++) {
576
417000
                    Jpeg2000Cblk *cblk = prec->cblk + cblkno;
577
417000
                    cblk->length = 0;
578
417000
                    cblk->lblock = 3;
579
                }
580
            }
581
        }
582
    }
583
3900
}
584
585
4073
void ff_jpeg2000_cleanup(Jpeg2000Component *comp, Jpeg2000CodingStyle *codsty)
586
{
587
    int reslevelno, bandno, precno;
588
4073
    for (reslevelno = 0;
589

32567
         comp->reslevel && reslevelno < codsty->nreslevels;
590
28494
         reslevelno++) {
591
        Jpeg2000ResLevel *reslevel;
592
593
28494
        if (!comp->reslevel)
594
            continue;
595
596
28494
        reslevel = comp->reslevel + reslevelno;
597
105830
        for (bandno = 0; bandno < reslevel->nbands; bandno++) {
598
            Jpeg2000Band *band;
599
600
77336
            if (!reslevel->band)
601
                continue;
602
603
77336
            band = reslevel->band + bandno;
604
156103
            for (precno = 0; precno < reslevel->num_precincts_x * reslevel->num_precincts_y; precno++) {
605
78767
                if (band->prec) {
606
78767
                    Jpeg2000Prec *prec = band->prec + precno;
607
78767
                    int nb_code_blocks = prec->nb_codeblocks_height * prec->nb_codeblocks_width;
608
609
78767
                    av_freep(&prec->zerobits);
610
78767
                    av_freep(&prec->cblkincl);
611
78767
                    if (prec->cblk) {
612
                        int cblkno;
613
533858
                        for (cblkno = 0; cblkno < nb_code_blocks; cblkno ++) {
614
455091
                            Jpeg2000Cblk *cblk = &prec->cblk[cblkno];
615
455091
                            av_freep(&cblk->data);
616
455091
                            av_freep(&cblk->passes);
617
455091
                            av_freep(&cblk->lengthinc);
618
455091
                            av_freep(&cblk->data_start);
619
                        }
620
78767
                        av_freep(&prec->cblk);
621
                    }
622
                }
623
            }
624
625
77336
            av_freep(&band->prec);
626
        }
627
28494
        av_freep(&reslevel->band);
628
    }
629
630
4073
    ff_dwt_destroy(&comp->dwt);
631
4073
    av_freep(&comp->reslevel);
632
4073
    av_freep(&comp->i_data);
633
4073
    av_freep(&comp->f_data);
634
4073
}