FFmpeg coverage

Directory: ../../../ffmpeg/
File: src/libavcodec/jpeg2000.c
Date: 2025-04-25 22:50:00
Exec Total Coverage
Lines: 308 345 89.3%
Functions: 15 15 100.0%
Branches: 161 194 83.0%
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/intfloat.h"
33 #include "libavutil/mem.h"
34 #include "libavutil/thread.h"
35 #include "avcodec.h"
36 #include "jpeg2000.h"
37
38 #define SHL(a, n) ((n) >= 0 ? (a) << (n) : (a) >> -(n))
39
40 /* tag tree routines */
41
42 972946 static int32_t tag_tree_size(int w, int h)
43 {
44 972946 int64_t res = 0;
45
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 1731358 while (w > 1 || h > 1) {
46 758412 res += w * (int64_t)h;
47
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 758412 av_assert0(res + 1 < INT32_MAX);
48 758412 w = (w + 1) >> 1;
49 758412 h = (h + 1) >> 1;
50 }
51 972946 return (int32_t)(res + 1);
52 }
53
54 /* allocate the memory for tag tree */
55 346346 static Jpeg2000TgtNode *ff_jpeg2000_tag_tree_init(int w, int h)
56 {
57 346346 int pw = w, ph = h;
58 Jpeg2000TgtNode *res, *t, *t2;
59 int32_t tt_size;
60
61 346346 tt_size = tag_tree_size(w, h);
62
63 346346 t = res = av_calloc(tt_size, sizeof(*t));
64
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 346346 if (!res)
65 ✗ return NULL;
66
67
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 605558 while (w > 1 || h > 1) {
68 int i, j;
69 259212 pw = w;
70 259212 ph = h;
71
72 259212 w = (w + 1) >> 1;
73 259212 h = (h + 1) >> 1;
74 259212 t2 = t + pw * ph;
75
76
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 913046 for (i = 0; i < ph; i++)
77
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 2899474 for (j = 0; j < pw; j++)
78 2245640 t[i * pw + j].parent = &t2[(i >> 1) * w + (j >> 1)];
79
80 259212 t = t2;
81 }
82 346346 t[0].parent = NULL;
83 346346 return res;
84 }
85
86 626600 void ff_tag_tree_zero(Jpeg2000TgtNode *t, int w, int h, int val)
87 {
88 626600 int i, siz = tag_tree_size(w, h);
89
90
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 5566600 for (i = 0; i < siz; i++) {
91 4940000 t[i].val = val;
92 4940000 t[i].temp_val = 0;
93 4940000 t[i].vis = 0;
94 }
95 626600 }
96
97 uint8_t ff_jpeg2000_sigctxno_lut[256][4];
98
99 51200 static int getsigctxno(int flag, int bandno)
100 {
101 int h, v, d;
102
103 51200 h = ((flag & JPEG2000_T1_SIG_E) ? 1 : 0) +
104 51200 ((flag & JPEG2000_T1_SIG_W) ? 1 : 0);
105 51200 v = ((flag & JPEG2000_T1_SIG_N) ? 1 : 0) +
106 51200 ((flag & JPEG2000_T1_SIG_S) ? 1 : 0);
107 51200 d = ((flag & JPEG2000_T1_SIG_NE) ? 1 : 0) +
108 51200 ((flag & JPEG2000_T1_SIG_NW) ? 1 : 0) +
109 51200 ((flag & JPEG2000_T1_SIG_SE) ? 1 : 0) +
110 51200 ((flag & JPEG2000_T1_SIG_SW) ? 1 : 0);
111
112
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 51200 if (bandno < 3) {
113
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 38400 if (bandno == 1)
114 12800 FFSWAP(int, h, v);
115
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 38400 if (h == 2) return 8;
116
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 28800 if (h == 1) {
117
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 19200 if (v >= 1) return 7;
118
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 4800 if (d >= 1) return 6;
119 300 return 5;
120 }
121
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 9600 if (v == 2) return 4;
122
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 7200 if (v == 1) return 3;
123
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 2400 if (d >= 2) return 2;
124
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 750 if (d == 1) return 1;
125 } else {
126
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 12800 if (d >= 3) return 8;
127
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 8800 if (d == 2) {
128
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 4800 if (h+v >= 1) return 7;
129 300 return 6;
130 }
131
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 4000 if (d == 1) {
132
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 3200 if (h+v >= 2) return 5;
133
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 1000 if (h+v == 1) return 4;
134 200 return 3;
135 }
136
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 800 if (h+v >= 2) return 2;
137
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 250 if (h+v == 1) return 1;
138 }
139 200 return 0;
140 }
141
142 uint8_t ff_jpeg2000_sgnctxno_lut[16][16], ff_jpeg2000_xorbit_lut[16][16];
143
144 static const int contribtab[3][3] = { { 0, -1, 1 }, { -1, -1, 0 }, { 1, 0, 1 } };
145 static const int ctxlbltab[3][3] = { { 13, 12, 11 }, { 10, 9, 10 }, { 11, 12, 13 } };
146 static const int xorbittab[3][3] = { { 1, 1, 1 }, { 1, 0, 0 }, { 0, 0, 0 } };
147
148 12800 static int getsgnctxno(int flag, uint8_t *xorbit)
149 {
150 int vcontrib, hcontrib;
151
152
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 12800 hcontrib = contribtab[flag & JPEG2000_T1_SIG_E ? flag & JPEG2000_T1_SGN_E ? 1 : 2 : 0]
153
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 12800 [flag & JPEG2000_T1_SIG_W ? flag & JPEG2000_T1_SGN_W ? 1 : 2 : 0] + 1;
154
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 12800 vcontrib = contribtab[flag & JPEG2000_T1_SIG_S ? flag & JPEG2000_T1_SGN_S ? 1 : 2 : 0]
155
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 12800 [flag & JPEG2000_T1_SIG_N ? flag & JPEG2000_T1_SGN_N ? 1 : 2 : 0] + 1;
156 12800 *xorbit = xorbittab[hcontrib][vcontrib];
157
158 12800 return ctxlbltab[hcontrib][vcontrib];
159 }
160
161 50 static void av_cold jpeg2000_init_tier1_luts(void)
162 {
163 int i, j;
164
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165
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166 51200 ff_jpeg2000_sigctxno_lut[i][j] = getsigctxno(i, j);
167
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 850 for (i = 0; i < 16; i++)
168
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 13600 for (j = 0; j < 16; j++)
169 12800 ff_jpeg2000_sgnctxno_lut[i][j] =
170 12800 getsgnctxno(i + (j << 8), &ff_jpeg2000_xorbit_lut[i][j]);
171 50 }
172
173 83 void av_cold ff_jpeg2000_init_tier1_luts(void)
174 {
175 static AVOnce init_static_once = AV_ONCE_INIT;
176 83 ff_thread_once(&init_static_once, jpeg2000_init_tier1_luts);
177 83 }
178
179 269071143 void ff_jpeg2000_set_significance(Jpeg2000T1Context *t1, int x, int y,
180 int negative)
181 {
182 269071143 x++;
183 269071143 y++;
184 269071143 t1->flags[(y) * t1->stride + x] |= JPEG2000_T1_SIG;
185
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 269071143 if (negative) {
186 131712726 t1->flags[(y) * t1->stride + x + 1] |= JPEG2000_T1_SIG_W | JPEG2000_T1_SGN_W;
187 131712726 t1->flags[(y) * t1->stride + x - 1] |= JPEG2000_T1_SIG_E | JPEG2000_T1_SGN_E;
188 131712726 t1->flags[(y + 1) * t1->stride + x] |= JPEG2000_T1_SIG_N | JPEG2000_T1_SGN_N;
189 131712726 t1->flags[(y - 1) * t1->stride + x] |= JPEG2000_T1_SIG_S | JPEG2000_T1_SGN_S;
190 } else {
191 137358417 t1->flags[(y) * t1->stride + x + 1] |= JPEG2000_T1_SIG_W;
192 137358417 t1->flags[(y) * t1->stride + x - 1] |= JPEG2000_T1_SIG_E;
193 137358417 t1->flags[(y + 1) * t1->stride + x] |= JPEG2000_T1_SIG_N;
194 137358417 t1->flags[(y - 1) * t1->stride + x] |= JPEG2000_T1_SIG_S;
195 }
196 269071143 t1->flags[(y + 1) * t1->stride + x + 1] |= JPEG2000_T1_SIG_NW;
197 269071143 t1->flags[(y + 1) * t1->stride + x - 1] |= JPEG2000_T1_SIG_NE;
198 269071143 t1->flags[(y - 1) * t1->stride + x + 1] |= JPEG2000_T1_SIG_SW;
199 269071143 t1->flags[(y - 1) * t1->stride + x - 1] |= JPEG2000_T1_SIG_SE;
200 269071143 }
201
202 // static const uint8_t lut_gain[2][4] = { { 0, 0, 0, 0 }, { 0, 1, 1, 2 } }; (unused)
203
204 /**
205 * 2^(x) for integer x in the range -126..128.
206 * @return correctly rounded float
207 */
208 38008 static av_always_inline float exp2fi(int x)
209 {
210 av_assert2(-126 <= x && x <= 128);
211 /* Normal range */
212 38008 return av_int2float((x+127) << 23);
213 }
214
215 171994 static void init_band_stepsize(AVCodecContext *avctx,
216 Jpeg2000Band *band,
217 Jpeg2000CodingStyle *codsty,
218 Jpeg2000QuantStyle *qntsty,
219 int bandno, int gbandno, int reslevelno,
220 int cbps)
221 {
222 /* TODO: Implementation of quantization step not finished,
223 * see ISO/IEC 15444-1:2002 E.1 and A.6.4. */
224
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 171994 switch (qntsty->quantsty) {
225 uint8_t gain;
226 133986 case JPEG2000_QSTY_NONE:
227 /* TODO: to verify. No quantization in this case */
228 133986 band->f_stepsize = 1;
229 133986 break;
230 38008 case JPEG2000_QSTY_SI:
231 /*TODO: Compute formula to implement. */
232 // numbps = cbps +
233 // lut_gain[codsty->transform == FF_DWT53][bandno + (reslevelno > 0)];
234 // band->f_stepsize = SHL(2048 + qntsty->mant[gbandno],
235 // 2 + numbps - qntsty->expn[gbandno]);
236 // break;
237 case JPEG2000_QSTY_SE:
238 /* Exponent quantization step.
239 * Formula:
240 * delta_b = 2 ^ (R_b - expn_b) * (1 + (mant_b / 2 ^ 11))
241 * R_b = R_I + log2 (gain_b )
242 * see ISO/IEC 15444-1:2002 E.1.1 eqn. E-3 and E-4 */
243 38008 gain = cbps;
244 38008 band->f_stepsize = exp2fi(gain - qntsty->expn[gbandno]);
245 38008 band->f_stepsize *= qntsty->mant[gbandno] / 2048.0 + 1.0;
246 38008 break;
247 ✗ default:
248 ✗ band->f_stepsize = 0;
249 ✗ av_log(avctx, AV_LOG_ERROR, "Unknown quantization format\n");
250 ✗ break;
251 }
252
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 171994 if (codsty->transform != FF_DWT53) {
253 38008 int lband = 0;
254
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 38008 switch (bandno + (reslevelno > 0)) {
255 24004 case 1:
256 case 2:
257 24004 band->f_stepsize *= F_LFTG_X * 2;
258 24004 lband = 1;
259 24004 break;
260 12002 case 3:
261 12002 band->f_stepsize *= F_LFTG_X * F_LFTG_X * 4;
262 12002 break;
263 }
264 38008 band->f_stepsize *= pow(F_LFTG_K, 2*(codsty->nreslevels2decode - reslevelno) + lband - 2);
265 }
266
267
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 171994 if (band->f_stepsize > (INT_MAX >> 15)) {
268 ✗ band->f_stepsize = 0;
269 ✗ av_log(avctx, AV_LOG_ERROR, "stepsize out of range\n");
270 }
271
272 171994 band->i_stepsize = (int)floorf(band->f_stepsize * (1 << 15));
273 171994 }
274
275 173173 static int init_prec(AVCodecContext *avctx,
276 Jpeg2000Band *band,
277 Jpeg2000ResLevel *reslevel,
278 Jpeg2000Component *comp,
279 Jpeg2000CodingStyle *codsty,
280 int precno, int bandno, int reslevelno,
281 int log2_band_prec_width,
282 int log2_band_prec_height)
283 {
284 173173 Jpeg2000Prec *prec = band->prec + precno;
285 int nb_codeblocks, cblkno;
286
287 173173 prec->decoded_layers = 0;
288
289 /* TODO: Explain formula for JPEG200 DCINEMA. */
290 /* TODO: Verify with previous count of codeblocks per band */
291
292 /* Compute P_x0 */
293 173173 prec->coord[0][0] = ((reslevel->coord[0][0] >> reslevel->log2_prec_width) + precno % reslevel->num_precincts_x) *
294 (1 << log2_band_prec_width);
295
296 /* Compute P_y0 */
297 173173 prec->coord[1][0] = ((reslevel->coord[1][0] >> reslevel->log2_prec_height) + precno / reslevel->num_precincts_x) *
298 (1 << log2_band_prec_height);
299
300 /* Compute P_x1 */
301 173173 prec->coord[0][1] = prec->coord[0][0] +
302 173173 (1 << log2_band_prec_width);
303 173173 prec->coord[0][0] = FFMAX(prec->coord[0][0], band->coord[0][0]);
304 173173 prec->coord[0][1] = FFMIN(prec->coord[0][1], band->coord[0][1]);
305
306 /* Compute P_y1 */
307 173173 prec->coord[1][1] = prec->coord[1][0] +
308 173173 (1 << log2_band_prec_height);
309 173173 prec->coord[1][0] = FFMAX(prec->coord[1][0], band->coord[1][0]);
310 173173 prec->coord[1][1] = FFMIN(prec->coord[1][1], band->coord[1][1]);
311
312 173173 prec->nb_codeblocks_width =
313 173173 ff_jpeg2000_ceildivpow2(prec->coord[0][1],
314 173173 band->log2_cblk_width)
315 173173 - (prec->coord[0][0] >> band->log2_cblk_width);
316 173173 prec->nb_codeblocks_height =
317 173173 ff_jpeg2000_ceildivpow2(prec->coord[1][1],
318 173173 band->log2_cblk_height)
319 173173 - (prec->coord[1][0] >> band->log2_cblk_height);
320
321
322 /* Tag trees initialization */
323 173173 prec->cblkincl =
324 173173 ff_jpeg2000_tag_tree_init(prec->nb_codeblocks_width,
325 prec->nb_codeblocks_height);
326
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 173173 if (!prec->cblkincl)
327 ✗ return AVERROR(ENOMEM);
328
329 173173 prec->zerobits =
330 173173 ff_jpeg2000_tag_tree_init(prec->nb_codeblocks_width,
331 prec->nb_codeblocks_height);
332
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 173173 if (!prec->zerobits)
333 ✗ return AVERROR(ENOMEM);
334
335
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 173173 if (prec->nb_codeblocks_width * (uint64_t)prec->nb_codeblocks_height > INT_MAX) {
336 ✗ prec->cblk = NULL;
337 ✗ return AVERROR(ENOMEM);
338 }
339 173173 nb_codeblocks = prec->nb_codeblocks_width * prec->nb_codeblocks_height;
340 173173 prec->cblk = av_calloc(nb_codeblocks, sizeof(*prec->cblk));
341
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 173173 if (!prec->cblk)
342 ✗ return AVERROR(ENOMEM);
343
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 1120714 for (cblkno = 0; cblkno < nb_codeblocks; cblkno++) {
344 947541 Jpeg2000Cblk *cblk = prec->cblk + cblkno;
345 int Cx0, Cy0;
346
347 /* Compute coordinates of codeblocks */
348 /* Compute Cx0*/
349 947541 Cx0 = ((prec->coord[0][0]) >> band->log2_cblk_width) << band->log2_cblk_width;
350 947541 Cx0 = Cx0 + ((cblkno % prec->nb_codeblocks_width) << band->log2_cblk_width);
351 947541 cblk->coord[0][0] = FFMAX(Cx0, prec->coord[0][0]);
352
353 /* Compute Cy0*/
354 947541 Cy0 = ((prec->coord[1][0]) >> band->log2_cblk_height) << band->log2_cblk_height;
355 947541 Cy0 = Cy0 + ((cblkno / prec->nb_codeblocks_width) << band->log2_cblk_height);
356 947541 cblk->coord[1][0] = FFMAX(Cy0, prec->coord[1][0]);
357
358 /* Compute Cx1 */
359 947541 cblk->coord[0][1] = FFMIN(Cx0 + (1 << band->log2_cblk_width),
360 prec->coord[0][1]);
361
362 /* Compute Cy1 */
363 947541 cblk->coord[1][1] = FFMIN(Cy0 + (1 << band->log2_cblk_height),
364 prec->coord[1][1]);
365 /* Update code-blocks coordinates according sub-band position */
366
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 947541 if ((bandno + !!reslevelno) & 1) {
367 625266 cblk->coord[0][0] += comp->reslevel[reslevelno-1].coord[0][1] -
368 625266 comp->reslevel[reslevelno-1].coord[0][0];
369 625266 cblk->coord[0][1] += comp->reslevel[reslevelno-1].coord[0][1] -
370 625266 comp->reslevel[reslevelno-1].coord[0][0];
371 }
372
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 947541 if ((bandno + !!reslevelno) & 2) {
373 625441 cblk->coord[1][0] += comp->reslevel[reslevelno-1].coord[1][1] -
374 625441 comp->reslevel[reslevelno-1].coord[1][0];
375 625441 cblk->coord[1][1] += comp->reslevel[reslevelno-1].coord[1][1] -
376 625441 comp->reslevel[reslevelno-1].coord[1][0];
377 }
378
379 947541 cblk->lblock = 3;
380 947541 cblk->length = 0;
381 947541 cblk->npasses = 0;
382
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 947541 if (av_codec_is_encoder(avctx->codec)) {
383 18070 cblk->layers = av_calloc(codsty->nlayers, sizeof(*cblk->layers));
384
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 18070 if (!cblk->layers)
385 ✗ return AVERROR(ENOMEM);
386 }
387 }
388
389 173173 return 0;
390 }
391
392 171994 static int init_band(AVCodecContext *avctx,
393 Jpeg2000ResLevel *reslevel,
394 Jpeg2000Component *comp,
395 Jpeg2000CodingStyle *codsty,
396 Jpeg2000QuantStyle *qntsty,
397 int bandno, int gbandno, int reslevelno,
398 const int cbps, int dx, int dy)
399 {
400 171994 Jpeg2000Band *band = reslevel->band + bandno;
401 uint8_t log2_band_prec_width, log2_band_prec_height;
402 171994 int declvl = codsty->nreslevels - reslevelno; // N_L -r see ISO/IEC 15444-1:2002 B.5
403 int precno;
404 int nb_precincts;
405 int i, j, ret;
406
407 171994 init_band_stepsize(avctx, band, codsty, qntsty, bandno, gbandno, reslevelno, cbps);
408
409 /* computation of tbx_0, tbx_1, tby_0, tby_1
410 * see ISO/IEC 15444-1:2002 B.5 eq. B-15 and tbl B.1
411 * codeblock width and height is computed for
412 * DCI JPEG 2000 codeblock_width = codeblock_width = 32 = 2 ^ 5 */
413
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 171994 if (reslevelno == 0) {
414 /* for reslevelno = 0, only one band, x0_b = y0_b = 0 */
415
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 28299 for (i = 0; i < 2; i++)
416
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 56598 for (j = 0; j < 2; j++)
417 37732 band->coord[i][j] =
418 37732 ff_jpeg2000_ceildivpow2(comp->coord_o[i][j],
419 declvl - 1);
420 9433 log2_band_prec_width = reslevel->log2_prec_width;
421 9433 log2_band_prec_height = reslevel->log2_prec_height;
422 /* see ISO/IEC 15444-1:2002 eq. B-17 and eq. B-15 */
423 9433 band->log2_cblk_width = FFMIN(codsty->log2_cblk_width,
424 reslevel->log2_prec_width);
425 9433 band->log2_cblk_height = FFMIN(codsty->log2_cblk_height,
426 reslevel->log2_prec_height);
427 } else {
428 /* 3 bands x0_b = 1 y0_b = 0; x0_b = 0 y0_b = 1; x0_b = y0_b = 1 */
429 /* x0_b and y0_b are computed with ((bandno + 1 >> i) & 1) */
430
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 487683 for (i = 0; i < 2; i++)
431
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 975366 for (j = 0; j < 2; j++)
432 /* Formula example for tbx_0 = ceildiv((tcx_0 - 2 ^ (declvl - 1) * x0_b) / declvl) */
433 650244 band->coord[i][j] =
434 650244 ff_jpeg2000_ceildivpow2(comp->coord_o[i][j] -
435 650244 (((bandno + 1 >> i) & 1LL) << declvl - 1),
436 declvl);
437 /* TODO: Manage case of 3 band offsets here or
438 * in coding/decoding function? */
439
440 /* see ISO/IEC 15444-1:2002 eq. B-17 and eq. B-15 */
441
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 162561 band->log2_cblk_width = FFMIN(codsty->log2_cblk_width,
442 reslevel->log2_prec_width - 1);
443
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 162561 band->log2_cblk_height = FFMIN(codsty->log2_cblk_height,
444 reslevel->log2_prec_height - 1);
445
446 162561 log2_band_prec_width = reslevel->log2_prec_width - 1;
447 162561 log2_band_prec_height = reslevel->log2_prec_height - 1;
448 }
449
450
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 171994 if (reslevel->num_precincts_x * (uint64_t)reslevel->num_precincts_y > INT_MAX) {
451 ✗ band->prec = NULL;
452 ✗ return AVERROR(ENOMEM);
453 }
454 171994 nb_precincts = reslevel->num_precincts_x * reslevel->num_precincts_y;
455 171994 band->prec = av_calloc(nb_precincts, sizeof(*band->prec));
456
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 171994 if (!band->prec)
457 ✗ return AVERROR(ENOMEM);
458
459
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 345167 for (precno = 0; precno < nb_precincts; precno++) {
460 173173 ret = init_prec(avctx, band, reslevel, comp, codsty,
461 precno, bandno, reslevelno,
462 log2_band_prec_width, log2_band_prec_height);
463
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 173173 if (ret < 0)
464 ✗ return ret;
465 }
466
467 171994 return 0;
468 }
469
470 9433 int ff_jpeg2000_init_component(Jpeg2000Component *comp,
471 Jpeg2000CodingStyle *codsty,
472 Jpeg2000QuantStyle *qntsty,
473 const int cbps, int dx, int dy,
474 AVCodecContext *avctx)
475 {
476 9433 int reslevelno, bandno, gbandno = 0, ret, i, j;
477 uint32_t csize;
478
479
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 9433 if (codsty->nreslevels2decode <= 0) {
480 ✗ av_log(avctx, AV_LOG_ERROR, "nreslevels2decode %d invalid or uninitialized\n", codsty->nreslevels2decode);
481 ✗ return AVERROR_INVALIDDATA;
482 }
483
484
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 9433 if (ret = ff_jpeg2000_dwt_init(&comp->dwt, comp->coord,
485 9433 codsty->nreslevels2decode - 1,
486 9433 codsty->transform))
487 ✗ return ret;
488
489
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 9433 if (av_image_check_size(comp->coord[0][1] - comp->coord[0][0],
490 9433 comp->coord[1][1] - comp->coord[1][0], 0, avctx))
491 ✗ return AVERROR_INVALIDDATA;
492 9433 csize = (comp->coord[0][1] - comp->coord[0][0]) *
493 9433 (comp->coord[1][1] - comp->coord[1][0]);
494
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 9433 if (comp->coord[0][1] - comp->coord[0][0] > 32768 ||
495
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 9433 comp->coord[1][1] - comp->coord[1][0] > 32768) {
496 ✗ av_log(avctx, AV_LOG_ERROR, "component size too large\n");
497 ✗ return AVERROR_PATCHWELCOME;
498 }
499
500
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 9433 if (codsty->transform == FF_DWT97) {
501 ✗ csize += AV_INPUT_BUFFER_PADDING_SIZE / sizeof(*comp->f_data);
502 ✗ comp->i_data = NULL;
503 ✗ comp->f_data = av_calloc(csize, sizeof(*comp->f_data));
504 ✗ if (!comp->f_data)
505 ✗ return AVERROR(ENOMEM);
506 } else {
507 9433 csize += AV_INPUT_BUFFER_PADDING_SIZE / sizeof(*comp->i_data);
508 9433 comp->f_data = NULL;
509 9433 comp->i_data = av_calloc(csize, sizeof(*comp->i_data));
510
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 9433 if (!comp->i_data)
511 ✗ return AVERROR(ENOMEM);
512 }
513 9433 comp->reslevel = av_calloc(codsty->nreslevels, sizeof(*comp->reslevel));
514
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 9433 if (!comp->reslevel)
515 ✗ return AVERROR(ENOMEM);
516 /* LOOP on resolution levels */
517
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 73053 for (reslevelno = 0; reslevelno < codsty->nreslevels; reslevelno++) {
518 63620 int declvl = codsty->nreslevels - reslevelno; // N_L -r see ISO/IEC 15444-1:2002 B.5
519 63620 Jpeg2000ResLevel *reslevel = comp->reslevel + reslevelno;
520
521 /* Compute borders for each resolution level.
522 * Computation of trx_0, trx_1, try_0 and try_1.
523 * see ISO/IEC 15444-1:2002 eq. B.5 and B-14 */
524
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 190860 for (i = 0; i < 2; i++)
525
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 381720 for (j = 0; j < 2; j++)
526 254480 reslevel->coord[i][j] =
527 254480 ff_jpeg2000_ceildivpow2(comp->coord_o[i][j], declvl - 1);
528 // update precincts size: 2^n value
529 63620 reslevel->log2_prec_width = codsty->log2_prec_widths[reslevelno];
530 63620 reslevel->log2_prec_height = codsty->log2_prec_heights[reslevelno];
531
532 /* Number of bands for each resolution level */
533
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 63620 if (reslevelno == 0)
534 9433 reslevel->nbands = 1;
535 else
536 54187 reslevel->nbands = 3;
537
538 /* Number of precincts which span the tile for resolution level reslevelno
539 * see B.6 in ISO/IEC 15444-1:2002 eq. B-16
540 * num_precincts_x = |- trx_1 / 2 ^ log2_prec_width) -| - (trx_0 / 2 ^ log2_prec_width)
541 * num_precincts_y = |- try_1 / 2 ^ log2_prec_width) -| - (try_0 / 2 ^ log2_prec_width)
542 * for Dcinema profiles in JPEG 2000
543 * num_precincts_x = |- trx_1 / 2 ^ log2_prec_width) -|
544 * num_precincts_y = |- try_1 / 2 ^ log2_prec_width) -| */
545
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 63620 if (reslevel->coord[0][1] == reslevel->coord[0][0])
546 ✗ reslevel->num_precincts_x = 0;
547 else
548 63620 reslevel->num_precincts_x =
549 63620 ff_jpeg2000_ceildivpow2(reslevel->coord[0][1],
550 63620 reslevel->log2_prec_width) -
551 63620 (reslevel->coord[0][0] >> reslevel->log2_prec_width);
552
553
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 63620 if (reslevel->coord[1][1] == reslevel->coord[1][0])
554 ✗ reslevel->num_precincts_y = 0;
555 else
556 63620 reslevel->num_precincts_y =
557 63620 ff_jpeg2000_ceildivpow2(reslevel->coord[1][1],
558 63620 reslevel->log2_prec_height) -
559 63620 (reslevel->coord[1][0] >> reslevel->log2_prec_height);
560
561 63620 reslevel->band = av_calloc(reslevel->nbands, sizeof(*reslevel->band));
562
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 63620 if (!reslevel->band)
563 ✗ return AVERROR(ENOMEM);
564
565
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 63620 if (reslevel->num_precincts_x * (uint64_t)reslevel->num_precincts_y * reslevel->nbands > avctx->max_pixels / sizeof(*reslevel->band->prec))
566 ✗ return AVERROR(ENOMEM);
567
568
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 235614 for (bandno = 0; bandno < reslevel->nbands; bandno++, gbandno++) {
569 171994 ret = init_band(avctx, reslevel,
570 comp, codsty, qntsty,
571 bandno, gbandno, reslevelno,
572 cbps, dx, dy);
573
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 171994 if (ret < 0)
574 ✗ return ret;
575 }
576 }
577 9433 return 0;
578 }
579
580 8450 void ff_jpeg2000_reinit(Jpeg2000Component *comp, Jpeg2000CodingStyle *codsty)
581 {
582 int reslevelno, bandno, cblkno, precno;
583
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 67600 for (reslevelno = 0; reslevelno < codsty->nreslevels; reslevelno++) {
584 59150 Jpeg2000ResLevel *rlevel = comp->reslevel + reslevelno;
585
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 219700 for (bandno = 0; bandno < rlevel->nbands; bandno++) {
586 160550 Jpeg2000Band *band = rlevel->band + bandno;
587
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 321100 for(precno = 0; precno < rlevel->num_precincts_x * rlevel->num_precincts_y; precno++) {
588 160550 Jpeg2000Prec *prec = band->prec + precno;
589 160550 ff_tag_tree_zero(prec->zerobits, prec->nb_codeblocks_width, prec->nb_codeblocks_height, 0);
590 160550 ff_tag_tree_zero(prec->cblkincl, prec->nb_codeblocks_width, prec->nb_codeblocks_height, 0);
591
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 1064050 for (cblkno = 0; cblkno < prec->nb_codeblocks_width * prec->nb_codeblocks_height; cblkno++) {
592 903500 Jpeg2000Cblk *cblk = prec->cblk + cblkno;
593 903500 cblk->length = 0;
594 903500 cblk->lblock = 3;
595 }
596 }
597 }
598 }
599 8450 }
600
601 10424 void ff_jpeg2000_cleanup(Jpeg2000Component *comp, Jpeg2000CodingStyle *codsty)
602 {
603 int reslevelno, bandno, precno;
604 10424 for (reslevelno = 0;
605
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 74044 comp->reslevel && reslevelno < codsty->nreslevels;
606 63620 reslevelno++) {
607 Jpeg2000ResLevel *reslevel;
608
609
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 63620 if (!comp->reslevel)
610 ✗ continue;
611
612 63620 reslevel = comp->reslevel + reslevelno;
613
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 235614 for (bandno = 0; bandno < reslevel->nbands; bandno++) {
614 Jpeg2000Band *band;
615
616
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 171994 if (!reslevel->band)
617 ✗ continue;
618
619 171994 band = reslevel->band + bandno;
620
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 345167 for (precno = 0; precno < reslevel->num_precincts_x * reslevel->num_precincts_y; precno++) {
621
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 173173 if (band->prec) {
622 173173 Jpeg2000Prec *prec = band->prec + precno;
623 173173 int nb_code_blocks = prec->nb_codeblocks_height * prec->nb_codeblocks_width;
624
625 173173 av_freep(&prec->zerobits);
626 173173 av_freep(&prec->cblkincl);
627
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 173173 if (prec->cblk) {
628 int cblkno;
629
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 1120714 for (cblkno = 0; cblkno < nb_code_blocks; cblkno ++) {
630 947541 Jpeg2000Cblk *cblk = &prec->cblk[cblkno];
631 947541 av_freep(&cblk->data);
632 947541 av_freep(&cblk->passes);
633 947541 av_freep(&cblk->lengthinc);
634 947541 av_freep(&cblk->data_start);
635 947541 av_freep(&cblk->layers);
636 }
637 173173 av_freep(&prec->cblk);
638 }
639 }
640 }
641
642 171994 av_freep(&band->prec);
643 }
644 63620 av_freep(&reslevel->band);
645 }
646
647 10424 ff_dwt_destroy(&comp->dwt);
648 10424 av_freep(&comp->reslevel);
649 10424 av_freep(&comp->i_data);
650 10424 av_freep(&comp->f_data);
651 10424 }
652