FFmpeg coverage

Directory: ../../../ffmpeg/
File: src/libavcodec/jpeg2000dwt.c
Date: 2025-10-24 21:16:34
Exec Total Coverage
Lines: 348 358 97.2%
Functions: 19 19 100.0%
Branches: 207 214 96.7%
Line Branch Exec Source
1 /*
2 * Discrete wavelet transform
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 * Discrete wavelet transform
26 */
27
28 #include "libavutil/error.h"
29 #include "libavutil/macros.h"
30 #include "libavutil/mem.h"
31 #include "jpeg2000dwt.h"
32
33 /* Defines for 9/7 DWT lifting parameters.
34 * Parameters are in float. */
35 #define F_LFTG_ALPHA 1.586134342059924f
36 #define F_LFTG_BETA 0.052980118572961f
37 #define F_LFTG_GAMMA 0.882911075530934f
38 #define F_LFTG_DELTA 0.443506852043971f
39
40 /* Lifting parameters in integer format.
41 * Computed as param = (float param) * (1 << 16) */
42 #define I_LFTG_ALPHA_PRIME 38413ll // = 103949 - 65536, (= alpha - 1.0)
43 #define I_LFTG_BETA 3472ll
44 #define I_LFTG_GAMMA 57862ll
45 #define I_LFTG_DELTA 29066ll
46 #define I_LFTG_K 80621ll
47 #define I_LFTG_X 53274ll
48
49 8041689 static inline void extend53(int *p, int i0, int i1)
50 {
51 8041689 p[i0 - 1] = p[i0 + 1];
52 8041689 p[i1] = p[i1 - 2];
53 8041689 p[i0 - 2] = p[i0 + 2];
54 8041689 p[i1 + 1] = p[i1 - 3];
55 8041689 }
56
57 12364 static inline void extend97_float(float *p, int i0, int i1)
58 {
59 int i;
60
61
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 61820 for (i = 1; i <= 4; i++) {
62 49456 p[i0 - i] = p[i0 + i];
63 49456 p[i1 + i - 1] = p[i1 - i - 1];
64 }
65 12364 }
66
67 2363699 static inline void extend97_int(int32_t *p, int i0, int i1)
68 {
69 int i;
70
71
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 11818495 for (i = 1; i <= 4; i++) {
72 9454796 p[i0 - i] = p[i0 + i];
73 9454796 p[i1 + i - 1] = p[i1 - i - 1];
74 }
75 2363699 }
76
77 3856290 static void sd_1d53(int *p, int i0, int i1)
78 {
79 int i;
80
81
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 3856290 if (i1 <= i0 + 1) {
82
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 16608 if (i0 == 1)
83 64 p[1] *= 2;
84 16608 return;
85 }
86
87 3839682 extend53(p, i0, i1);
88
89
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 211375333 for (i = ((i0+1)>>1) - 1; i < (i1+1)>>1; i++)
90 207535651 p[2*i+1] -= (p[2*i] + p[2*i+2]) >> 1;
91
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 207535651 for (i = ((i0+1)>>1); i < (i1+1)>>1; i++)
92 203695969 p[2*i] += (p[2*i-1] + p[2*i+1] + 2) >> 2;
93 }
94
95 6520 static void dwt_encode53(DWTContext *s, int *t)
96 {
97 int lev,
98 6520 w = s->linelen[s->ndeclevels-1][0];
99 6520 int *line = s->i_linebuf;
100 6520 line += 3;
101
102
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 45858 for (lev = s->ndeclevels-1; lev >= 0; lev--){
103 39338 int lh = s->linelen[lev][0],
104 39338 lv = s->linelen[lev][1],
105 39338 mh = s->mod[lev][0],
106 39338 mv = s->mod[lev][1],
107 lp;
108 int *l;
109
110 // VER_SD
111 39338 l = line + mv;
112
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 2156014 for (lp = 0; lp < lh; lp++) {
113 2116676 int i, j = 0;
114
115
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 205797223 for (i = 0; i < lv; i++)
116 203680547 l[i] = t[w*i + lp];
117
118 2116676 sd_1d53(line, mv, mv + lv);
119
120 // copy back and deinterleave
121
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 103973692 for (i = mv; i < lv; i+=2, j++)
122 101857016 t[w*j + lp] = l[i];
123
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 103940207 for (i = 1-mv; i < lv; i+=2, j++)
124 101823531 t[w*j + lp] = l[i];
125 }
126
127 // HOR_SD
128 39338 l = line + mh;
129
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130 1739614 int i, j = 0;
131
132
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 205420161 for (i = 0; i < lh; i++)
133 203680547 l[i] = t[w*lp + i];
134
135 1739614 sd_1d53(line, mh, mh + lh);
136
137 // copy back and deinterleave
138
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 103595093 for (i = mh; i < lh; i+=2, j++)
139 101855479 t[w*lp + j] = l[i];
140
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 103564682 for (i = 1-mh; i < lh; i+=2, j++)
141 101825068 t[w*lp + j] = l[i];
142 }
143 }
144 6520 }
145 6290 static void sd_1d97_float(float *p, int i0, int i1)
146 {
147 int i;
148
149
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 6290 if (i1 <= i0 + 1) {
150
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 108 if (i0 == 1)
151 64 p[1] *= F_LFTG_X * 2;
152 else
153 44 p[0] *= F_LFTG_K;
154 108 return;
155 }
156
157 6182 extend97_float(p, i0, i1);
158 6182 i0++; i1++;
159
160
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 220697 for (i = (i0>>1) - 2; i < (i1>>1) + 1; i++)
161 214515 p[2*i+1] -= 1.586134 * (p[2*i] + p[2*i+2]);
162
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 214515 for (i = (i0>>1) - 1; i < (i1>>1) + 1; i++)
163 208333 p[2*i] -= 0.052980 * (p[2*i-1] + p[2*i+1]);
164
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 208333 for (i = (i0>>1) - 1; i < (i1>>1); i++)
165 202151 p[2*i+1] += 0.882911 * (p[2*i] + p[2*i+2]);
166
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 202151 for (i = (i0>>1); i < (i1>>1); i++)
167 195969 p[2*i] += 0.443506 * (p[2*i-1] + p[2*i+1]);
168 }
169
170 20 static void dwt_encode97_float(DWTContext *s, float *t)
171 {
172 int lev,
173 20 w = s->linelen[s->ndeclevels-1][0];
174 20 float *line = s->f_linebuf;
175 20 line += 5;
176
177
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 358 for (lev = s->ndeclevels-1; lev >= 0; lev--){
178 338 int lh = s->linelen[lev][0],
179 338 lv = s->linelen[lev][1],
180 338 mh = s->mod[lev][0],
181 338 mv = s->mod[lev][1],
182 lp;
183 float *l;
184
185 // HOR_SD
186 338 l = line + mh;
187
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 3952 for (lp = 0; lp < lv; lp++){
188 3614 int i, j = 0;
189
190
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 199661 for (i = 0; i < lh; i++)
191 196047 l[i] = t[w*lp + i];
192
193 3614 sd_1d97_float(line, mh, mh + lh);
194
195 // copy back and deinterleave
196
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 101593 for (i = mh; i < lh; i+=2, j++)
197 97979 t[w*lp + j] = l[i];
198
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 101682 for (i = 1-mh; i < lh; i+=2, j++)
199 98068 t[w*lp + j] = l[i];
200 }
201
202 // VER_SD
203 338 l = line + mv;
204
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 3014 for (lp = 0; lp < lh; lp++) {
205 2676 int i, j = 0;
206
207
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 198723 for (i = 0; i < lv; i++)
208 196047 l[i] = t[w*i + lp];
209
210 2676 sd_1d97_float(line, mv, mv + lv);
211
212 // copy back and deinterleave
213
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 100692 for (i = mv; i < lv; i+=2, j++)
214 98016 t[w*j + lp] = l[i];
215
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 100707 for (i = 1-mv; i < lv; i+=2, j++)
216 98031 t[w*j + lp] = l[i];
217 }
218 }
219 20 }
220
221 1161290 static void sd_1d97_int(int *p, int i0, int i1)
222 {
223 int i;
224
225
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 1161290 if (i1 <= i0 + 1) {
226
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 5058 if (i0 == 1)
227 64 p[1] = (p[1] * I_LFTG_X + (1<<14)) >> 15;
228 else
229 4994 p[0] = (p[0] * I_LFTG_K + (1<<15)) >> 16;
230 5058 return;
231 }
232
233 1156232 extend97_int(p, i0, i1);
234 1156232 i0++; i1++;
235
236
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 65870897 for (i = (i0>>1) - 2; i < (i1>>1) + 1; i++) {
237 64714665 const int64_t sum = p[2 * i] + p[2 * i + 2];
238 64714665 p[2 * i + 1] -= sum;
239 64714665 p[2 * i + 1] -= (I_LFTG_ALPHA_PRIME * sum + (1 << 15)) >> 16;
240 }
241
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 64714665 for (i = (i0>>1) - 1; i < (i1>>1) + 1; i++)
242 63558433 p[2 * i] -= (I_LFTG_BETA * (p[2 * i - 1] + p[2 * i + 1]) + (1 << 15)) >> 16;
243
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 63558433 for (i = (i0>>1) - 1; i < (i1>>1); i++)
244 62402201 p[2 * i + 1] += (I_LFTG_GAMMA * (p[2 * i] + p[2 * i + 2]) + (1 << 15)) >> 16;
245
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 62402201 for (i = (i0>>1); i < (i1>>1); i++)
246 61245969 p[2 * i] += (I_LFTG_DELTA * (p[2 * i - 1] + p[2 * i + 1]) + (1 << 15)) >> 16;
247 }
248
249 1970 static void dwt_encode97_int(DWTContext *s, int *t)
250 {
251 int lev;
252 1970 int w = s->linelen[s->ndeclevels-1][0];
253 1970 int h = s->linelen[s->ndeclevels-1][1];
254 int i;
255 1970 int *line = s->i_linebuf;
256 1970 line += 5;
257
258
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 45942503 for (i = 0; i < w * h; i++)
259 45940533 t[i] *= 1 << I_PRESHIFT;
260
261
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 14008 for (lev = s->ndeclevels-1; lev >= 0; lev--){
262 12038 int lh = s->linelen[lev][0],
263 12038 lv = s->linelen[lev][1],
264 12038 mh = s->mod[lev][0],
265 12038 mv = s->mod[lev][1],
266 lp;
267 int *l;
268
269 // VER_SD
270 12038 l = line + mv;
271
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 648914 for (lp = 0; lp < lh; lp++) {
272 636876 int i, j = 0;
273
274
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 61878273 for (i = 0; i < lv; i++)
275 61241397 l[i] = t[w*i + lp];
276
277 636876 sd_1d97_int(line, mv, mv + lv);
278
279 // copy back and deinterleave
280
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 31262592 for (i = mv; i < lv; i+=2, j++)
281 30625716 t[w*j + lp] = l[i];
282
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 31252557 for (i = 1-mv; i < lv; i+=2, j++)
283 30615681 t[w*j + lp] = l[i];
284 }
285
286 // HOR_SD
287 12038 l = line + mh;
288
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 536452 for (lp = 0; lp < lv; lp++){
289 524414 int i, j = 0;
290
291
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 61765811 for (i = 0; i < lh; i++)
292 61241397 l[i] = t[w*lp + i];
293
294 524414 sd_1d97_int(line, mh, mh + lh);
295
296 // copy back and deinterleave
297
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 31149643 for (i = mh; i < lh; i+=2, j++)
298 30625229 t[w*lp + j] = l[i];
299
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 31140582 for (i = 1-mh; i < lh; i+=2, j++)
300 30616168 t[w*lp + j] = l[i];
301 }
302
303 }
304
305
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 45942503 for (i = 0; i < w * h; i++)
306 45940533 t[i] = (t[i] + ((1<<(I_PRESHIFT))>>1)) >> (I_PRESHIFT);
307 1970 }
308
309 4218617 static void sr_1d53(unsigned *p, int i0, int i1)
310 {
311 int i;
312
313
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 4218617 if (i1 <= i0 + 1) {
314
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 16610 if (i0 == 1)
315 64 p[1] = (int)p[1] >> 1;
316 16610 return;
317 }
318
319 4202007 extend53(p, i0, i1);
320
321
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 230725590 for (i = (i0 >> 1); i < (i1 >> 1) + 1; i++)
322 226523583 p[2 * i] -= (int)(p[2 * i - 1] + p[2 * i + 1] + 2) >> 2;
323
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 226523583 for (i = (i0 >> 1); i < (i1 >> 1); i++)
324 222321576 p[2 * i + 1] += (int)(p[2 * i] + p[2 * i + 2]) >> 1;
325 }
326
327 7320 static void dwt_decode53(DWTContext *s, int *t)
328 {
329 int lev;
330 7320 int w = s->linelen[s->ndeclevels - 1][0];
331 7320 int32_t *line = s->i_linebuf;
332 7320 line += 3;
333
334
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 49060 for (lev = 0; lev < s->ndeclevels; lev++) {
335 41740 int lh = s->linelen[lev][0],
336 41740 lv = s->linelen[lev][1],
337 41740 mh = s->mod[lev][0],
338 41740 mv = s->mod[lev][1],
339 lp;
340 int *l;
341
342 // HOR_SD
343 41740 l = line + mh;
344
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 1966335 for (lp = 0; lp < lv; lp++) {
345 1924595 int i, j = 0;
346 // copy with interleaving
347
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 113123672 for (i = mh; i < lh; i += 2, j++)
348 111199077 l[i] = t[w * lp + j];
349
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 113083924 for (i = 1 - mh; i < lh; i += 2, j++)
350 111159329 l[i] = t[w * lp + j];
351
352 1924595 sr_1d53(line, mh, mh + lh);
353
354
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 224283001 for (i = 0; i < lh; i++)
355 222358406 t[w * lp + i] = l[i];
356 }
357
358 // VER_SD
359 41740 l = line + mv;
360
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 2335762 for (lp = 0; lp < lh; lp++) {
361 2294022 int i, j = 0;
362 // copy with interleaving
363
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 113490127 for (i = mv; i < lv; i += 2, j++)
364 111196105 l[i] = t[w * j + lp];
365
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 113456323 for (i = 1 - mv; i < lv; i += 2, j++)
366 111162301 l[i] = t[w * j + lp];
367
368 2294022 sr_1d53(line, mv, mv + lv);
369
370
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 224652428 for (i = 0; i < lv; i++)
371 222358406 t[w * i + lp] = l[i];
372 }
373 }
374 7320 }
375
376 6290 static void sr_1d97_float(float *p, int i0, int i1)
377 {
378 int i;
379
380
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 6290 if (i1 <= i0 + 1) {
381
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 108 if (i0 == 1)
382 64 p[1] *= F_LFTG_K/2;
383 else
384 44 p[0] *= F_LFTG_X;
385 108 return;
386 }
387
388 6182 extend97_float(p, i0, i1);
389
390
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 220773 for (i = (i0 >> 1) - 1; i < (i1 >> 1) + 2; i++)
391 214591 p[2 * i] -= F_LFTG_DELTA * (p[2 * i - 1] + p[2 * i + 1]);
392 /* step 4 */
393
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 214591 for (i = (i0 >> 1) - 1; i < (i1 >> 1) + 1; i++)
394 208409 p[2 * i + 1] -= F_LFTG_GAMMA * (p[2 * i] + p[2 * i + 2]);
395 /*step 5*/
396
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 208409 for (i = (i0 >> 1); i < (i1 >> 1) + 1; i++)
397 202227 p[2 * i] += F_LFTG_BETA * (p[2 * i - 1] + p[2 * i + 1]);
398 /* step 6 */
399
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 202227 for (i = (i0 >> 1); i < (i1 >> 1); i++)
400 196045 p[2 * i + 1] += F_LFTG_ALPHA * (p[2 * i] + p[2 * i + 2]);
401 }
402
403 20 static void dwt_decode97_float(DWTContext *s, float *t)
404 {
405 int lev;
406 20 int w = s->linelen[s->ndeclevels - 1][0];
407 20 float *line = s->f_linebuf;
408 20 float *data = t;
409 /* position at index O of line range [0-5,w+5] cf. extend function */
410 20 line += 5;
411
412
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 358 for (lev = 0; lev < s->ndeclevels; lev++) {
413 338 int lh = s->linelen[lev][0],
414 338 lv = s->linelen[lev][1],
415 338 mh = s->mod[lev][0],
416 338 mv = s->mod[lev][1],
417 lp;
418 float *l;
419 // HOR_SD
420 338 l = line + mh;
421
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 3952 for (lp = 0; lp < lv; lp++) {
422 3614 int i, j = 0;
423 // copy with interleaving
424
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 101593 for (i = mh; i < lh; i += 2, j++)
425 97979 l[i] = data[w * lp + j];
426
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 101682 for (i = 1 - mh; i < lh; i += 2, j++)
427 98068 l[i] = data[w * lp + j];
428
429 3614 sr_1d97_float(line, mh, mh + lh);
430
431
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 199661 for (i = 0; i < lh; i++)
432 196047 data[w * lp + i] = l[i];
433 }
434
435 // VER_SD
436 338 l = line + mv;
437
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 3014 for (lp = 0; lp < lh; lp++) {
438 2676 int i, j = 0;
439 // copy with interleaving
440
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 100692 for (i = mv; i < lv; i += 2, j++)
441 98016 l[i] = data[w * j + lp];
442
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 100707 for (i = 1 - mv; i < lv; i += 2, j++)
443 98031 l[i] = data[w * j + lp];
444
445 2676 sr_1d97_float(line, mv, mv + lv);
446
447
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 198723 for (i = 0; i < lv; i++)
448 196047 data[w * i + lp] = l[i];
449 }
450 }
451 20 }
452
453 1212525 static void sr_1d97_int(int32_t *p, int i0, int i1)
454 {
455 int i;
456
457
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 1212525 if (i1 <= i0 + 1) {
458
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 5058 if (i0 == 1)
459 64 p[1] = (p[1] * I_LFTG_K + (1<<16)) >> 17;
460 else
461 4994 p[0] = (p[0] * I_LFTG_X + (1<<15)) >> 16;
462 5058 return;
463 }
464
465 1207467 extend97_int(p, i0, i1);
466
467
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 86986649 for (i = (i0 >> 1) - 1; i < (i1 >> 1) + 2; i++)
468 85779182 p[2 * i] -= (I_LFTG_DELTA * (p[2 * i - 1] + (int64_t)p[2 * i + 1]) + (1 << 15)) >> 16;
469 /* step 4 */
470
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 85779182 for (i = (i0 >> 1) - 1; i < (i1 >> 1) + 1; i++)
471 84571715 p[2 * i + 1] -= (I_LFTG_GAMMA * (p[2 * i] + (int64_t)p[2 * i + 2]) + (1 << 15)) >> 16;
472 /*step 5*/
473
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 84571715 for (i = (i0 >> 1); i < (i1 >> 1) + 1; i++)
474 83364248 p[2 * i] += (I_LFTG_BETA * (p[2 * i - 1] + (int64_t)p[2 * i + 1]) + (1 << 15)) >> 16;
475 /* step 6 */
476
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 83364248 for (i = (i0 >> 1); i < (i1 >> 1); i++) {
477 82156781 const int64_t sum = p[2 * i] + (int64_t) p[2 * i + 2];
478 82156781 p[2 * i + 1] += sum;
479 82156781 p[2 * i + 1] += (I_LFTG_ALPHA_PRIME * sum + (1 << 15)) >> 16;
480 }
481 }
482
483 1983 static void dwt_decode97_int(DWTContext *s, int32_t *t)
484 {
485 int lev;
486 1983 int w = s->linelen[s->ndeclevels - 1][0];
487 1983 int h = s->linelen[s->ndeclevels - 1][1];
488 int i;
489 1983 int32_t *line = s->i_linebuf;
490 1983 int32_t *data = t;
491 /* position at index O of line range [0-5,w+5] cf. extend function */
492 1983 line += 5;
493
494
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 14089 for (lev = 0; lev < s->ndeclevels; lev++) {
495 12106 int lh = s->linelen[lev][0],
496 12106 lv = s->linelen[lev][1],
497 12106 mh = s->mod[lev][0],
498 12106 mv = s->mod[lev][1],
499 lp;
500 int32_t *l;
501 // HOR_SD
502 12106 l = line + mh;
503
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 556803 for (lp = 0; lp < lv; lp++) {
504 544697 int i, j = 0;
505 // interleaving
506
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 41632855 for (i = mh; i < lh; i += 2, j++)
507 41088158 l[i] = data[w * lp + j];
508
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 41623723 for (i = 1 - mh; i < lh; i += 2, j++)
509 41079026 l[i] = data[w * lp + j];
510
511 544697 sr_1d97_int(line, mh, mh + lh);
512
513
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 82711881 for (i = 0; i < lh; i++)
514 82167184 data[w * lp + i] = l[i];
515 }
516
517 // VER_SD
518 12106 l = line + mv;
519
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 679934 for (lp = 0; lp < lh; lp++) {
520 667828 int i, j = 0;
521 // interleaving
522
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 41757203 for (i = mv; i < lv; i += 2, j++)
523 41089375 l[i] = data[w * j + lp];
524
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 41745637 for (i = 1 - mv; i < lv; i += 2, j++)
525 41077809 l[i] = data[w * j + lp];
526
527 667828 sr_1d97_int(line, mv, mv + lv);
528
529
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 82835012 for (i = 0; i < lv; i++)
530 82167184 data[w * i + lp] = l[i];
531 }
532 }
533
534
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 61665641 for (i = 0; i < w * h; i++)
535 // We shift down by `I_PRESHIFT` because the input coefficients `datap[]` were shifted up by `I_PRESHIFT` to secure the precision
536 61663658 data[i] = (int32_t)(data[i] + ((1LL<<(I_PRESHIFT))>>1)) >> (I_PRESHIFT);
537 1983 }
538
539 9493 int ff_jpeg2000_dwt_init(DWTContext *s, int border[2][2],
540 int decomp_levels, int type)
541 {
542 9493 int i, j, lev = decomp_levels, maxlen,
543 b[2][2];
544
545 9493 s->ndeclevels = decomp_levels;
546 9493 s->type = type;
547
548
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 28479 for (i = 0; i < 2; i++)
549
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 56958 for (j = 0; j < 2; j++)
550 37972 b[i][j] = border[i][j];
551
552 9493 maxlen = FFMAX(b[0][1] - b[0][0],
553 b[1][1] - b[1][0]);
554
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 64691 while (--lev >= 0)
555
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 165594 for (i = 0; i < 2; i++) {
556 110396 s->linelen[lev][i] = b[i][1] - b[i][0];
557 110396 s->mod[lev][i] = b[i][0] & 1;
558
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 331188 for (j = 0; j < 2; j++)
559 220792 b[i][j] = (b[i][j] + 1) >> 1;
560 }
561
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 9493 switch (type) {
562 20 case FF_DWT97:
563 20 s->f_linebuf = av_malloc_array((maxlen + 12), sizeof(*s->f_linebuf));
564
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 20 if (!s->f_linebuf)
565 ✗ return AVERROR(ENOMEM);
566 20 break;
567 2022 case FF_DWT97_INT:
568 2022 s->i_linebuf = av_malloc_array((maxlen + 12), sizeof(*s->i_linebuf));
569
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 2022 if (!s->i_linebuf)
570 ✗ return AVERROR(ENOMEM);
571 2022 break;
572 7451 case FF_DWT53:
573 7451 s->i_linebuf = av_malloc_array((maxlen + 6), sizeof(*s->i_linebuf));
574
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 7451 if (!s->i_linebuf)
575 ✗ return AVERROR(ENOMEM);
576 7451 break;
577 ✗ default:
578 ✗ return -1;
579 }
580 9493 return 0;
581 }
582
583 8510 int ff_dwt_encode(DWTContext *s, void *t)
584 {
585
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 8510 if (s->ndeclevels == 0)
586 ✗ return 0;
587
588
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 8510 switch(s->type){
589 20 case FF_DWT97:
590 20 dwt_encode97_float(s, t); break;
591 1970 case FF_DWT97_INT:
592 1970 dwt_encode97_int(s, t); break;
593 6520 case FF_DWT53:
594 6520 dwt_encode53(s, t); break;
595 ✗ default:
596 ✗ return -1;
597 }
598 8510 return 0;
599 }
600
601 9324 int ff_dwt_decode(DWTContext *s, void *t)
602 {
603
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 9324 if (s->ndeclevels == 0)
604 1 return 0;
605
606
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 9323 switch (s->type) {
607 20 case FF_DWT97:
608 20 dwt_decode97_float(s, t);
609 20 break;
610 1983 case FF_DWT97_INT:
611 1983 dwt_decode97_int(s, t);
612 1983 break;
613 7320 case FF_DWT53:
614 7320 dwt_decode53(s, t);
615 7320 break;
616 ✗ default:
617 ✗ return -1;
618 }
619 9323 return 0;
620 }
621
622 10484 void ff_dwt_destroy(DWTContext *s)
623 {
624 10484 av_freep(&s->f_linebuf);
625 10484 av_freep(&s->i_linebuf);
626 10484 }
627