| 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/common.h" |
| 29 | #include "libavutil/mem.h" |
| 30 | #include "jpeg2000dwt.h" |
| 31 | #include "internal.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 | #define F_LFTG_K 1.230174104914001f |
| 40 | #define F_LFTG_X 1.625732422f |
| 41 | /* FIXME: Why use 1.625732422 instead of 1/F_LFTG_K? |
| 42 | * Incorrect value in JPEG2000 norm. |
| 43 | * see (ISO/IEC 15444:1 (version 2002) F.3.8.2 */ |
| 44 | |
| 45 | /* Lifting parameters in integer format. |
| 46 | * Computed as param = (float param) * (1 << 16) */ |
| 47 | #define I_LFTG_ALPHA 103949 |
| 48 | #define I_LFTG_BETA 3472 |
| 49 | #define I_LFTG_GAMMA 57862 |
| 50 | #define I_LFTG_DELTA 29066 |
| 51 | #define I_LFTG_K 80621 |
| 52 | #define I_LFTG_X 106544 |
| 53 | |
| 54 | static inline void extend53(int *p, int i0, int i1) |
| 55 | { |
| 56 | p[i0 - 1] = p[i0 + 1]; |
| 57 | p[i1] = p[i1 - 2]; |
| 58 | p[i0 - 2] = p[i0 + 2]; |
| 59 | p[i1 + 1] = p[i1 - 3]; |
| 60 | } |
| 61 | |
| 62 | static inline void extend97_float(float *p, int i0, int i1) |
| 63 | { |
| 64 | int i; |
| 65 | |
| 66 | for (i = 1; i <= 4; i++) { |
| 67 | p[i0 - i] = p[i0 + i]; |
| 68 | p[i1 + i - 1] = p[i1 - i - 1]; |
| 69 | } |
| 70 | } |
| 71 | |
| 72 | static inline void extend97_int(int32_t *p, int i0, int i1) |
| 73 | { |
| 74 | int i; |
| 75 | |
| 76 | for (i = 1; i <= 4; i++) { |
| 77 | p[i0 - i] = p[i0 + i]; |
| 78 | p[i1 + i - 1] = p[i1 - i - 1]; |
| 79 | } |
| 80 | } |
| 81 | |
| 82 | static void sd_1d53(int *p, int i0, int i1) |
| 83 | { |
| 84 | int i; |
| 85 | |
| 86 | if (i1 == i0 + 1) |
| 87 | return; |
| 88 | |
| 89 | extend53(p, i0, i1); |
| 90 | |
| 91 | for (i = (i0+1)/2 - 1; i < (i1+1)/2; i++) |
| 92 | p[2*i+1] -= (p[2*i] + p[2*i+2]) >> 1; |
| 93 | for (i = (i0+1)/2; i < (i1+1)/2; i++) |
| 94 | p[2*i] += (p[2*i-1] + p[2*i+1] + 2) >> 2; |
| 95 | } |
| 96 | |
| 97 | static void dwt_encode53(DWTContext *s, int *t) |
| 98 | { |
| 99 | int lev, |
| 100 | w = s->linelen[s->ndeclevels-1][0]; |
| 101 | int *line = s->i_linebuf; |
| 102 | line += 3; |
| 103 | |
| 104 | for (lev = s->ndeclevels-1; lev >= 0; lev--){ |
| 105 | int lh = s->linelen[lev][0], |
| 106 | lv = s->linelen[lev][1], |
| 107 | mh = s->mod[lev][0], |
| 108 | mv = s->mod[lev][1], |
| 109 | lp; |
| 110 | int *l; |
| 111 | |
| 112 | // HOR_SD |
| 113 | l = line + mh; |
| 114 | for (lp = 0; lp < lv; lp++){ |
| 115 | int i, j = 0; |
| 116 | |
| 117 | for (i = 0; i < lh; i++) |
| 118 | l[i] = t[w*lp + i]; |
| 119 | |
| 120 | sd_1d53(line, mh, mh + lh); |
| 121 | |
| 122 | // copy back and deinterleave |
| 123 | for (i = mh; i < lh; i+=2, j++) |
| 124 | t[w*lp + j] = l[i]; |
| 125 | for (i = 1-mh; i < lh; i+=2, j++) |
| 126 | t[w*lp + j] = l[i]; |
| 127 | } |
| 128 | |
| 129 | // VER_SD |
| 130 | l = line + mv; |
| 131 | for (lp = 0; lp < lh; lp++) { |
| 132 | int i, j = 0; |
| 133 | |
| 134 | for (i = 0; i < lv; i++) |
| 135 | l[i] = t[w*i + lp]; |
| 136 | |
| 137 | sd_1d53(line, mv, mv + lv); |
| 138 | |
| 139 | // copy back and deinterleave |
| 140 | for (i = mv; i < lv; i+=2, j++) |
| 141 | t[w*j + lp] = l[i]; |
| 142 | for (i = 1-mv; i < lv; i+=2, j++) |
| 143 | t[w*j + lp] = l[i]; |
| 144 | } |
| 145 | } |
| 146 | } |
| 147 | static void sd_1d97_float(float *p, int i0, int i1) |
| 148 | { |
| 149 | int i; |
| 150 | |
| 151 | if (i1 == i0 + 1) |
| 152 | return; |
| 153 | |
| 154 | extend97_float(p, i0, i1); |
| 155 | i0++; i1++; |
| 156 | |
| 157 | for (i = i0/2 - 2; i < i1/2 + 1; i++) |
| 158 | p[2*i+1] -= 1.586134 * (p[2*i] + p[2*i+2]); |
| 159 | for (i = i0/2 - 1; i < i1/2 + 1; i++) |
| 160 | p[2*i] -= 0.052980 * (p[2*i-1] + p[2*i+1]); |
| 161 | for (i = i0/2 - 1; i < i1/2; i++) |
| 162 | p[2*i+1] += 0.882911 * (p[2*i] + p[2*i+2]); |
| 163 | for (i = i0/2; i < i1/2; i++) |
| 164 | p[2*i] += 0.443506 * (p[2*i-1] + p[2*i+1]); |
| 165 | } |
| 166 | |
| 167 | static void dwt_encode97_float(DWTContext *s, float *t) |
| 168 | { |
| 169 | int lev, |
| 170 | w = s->linelen[s->ndeclevels-1][0]; |
| 171 | float *line = s->f_linebuf; |
| 172 | line += 5; |
| 173 | |
| 174 | for (lev = s->ndeclevels-1; lev >= 0; lev--){ |
| 175 | int lh = s->linelen[lev][0], |
| 176 | lv = s->linelen[lev][1], |
| 177 | mh = s->mod[lev][0], |
| 178 | mv = s->mod[lev][1], |
| 179 | lp; |
| 180 | float *l; |
| 181 | |
| 182 | // HOR_SD |
| 183 | l = line + mh; |
| 184 | for (lp = 0; lp < lv; lp++){ |
| 185 | int i, j = 0; |
| 186 | |
| 187 | for (i = 0; i < lh; i++) |
| 188 | l[i] = t[w*lp + i]; |
| 189 | |
| 190 | sd_1d97_float(line, mh, mh + lh); |
| 191 | |
| 192 | // copy back and deinterleave |
| 193 | for (i = mh; i < lh; i+=2, j++) |
| 194 | t[w*lp + j] = F_LFTG_X * l[i] / 2; |
| 195 | for (i = 1-mh; i < lh; i+=2, j++) |
| 196 | t[w*lp + j] = F_LFTG_K * l[i] / 2; |
| 197 | } |
| 198 | |
| 199 | // VER_SD |
| 200 | l = line + mv; |
| 201 | for (lp = 0; lp < lh; lp++) { |
| 202 | int i, j = 0; |
| 203 | |
| 204 | for (i = 0; i < lv; i++) |
| 205 | l[i] = t[w*i + lp]; |
| 206 | |
| 207 | sd_1d97_float(line, mv, mv + lv); |
| 208 | |
| 209 | // copy back and deinterleave |
| 210 | for (i = mv; i < lv; i+=2, j++) |
| 211 | t[w*j + lp] = F_LFTG_X * l[i] / 2; |
| 212 | for (i = 1-mv; i < lv; i+=2, j++) |
| 213 | t[w*j + lp] = F_LFTG_K * l[i] / 2; |
| 214 | } |
| 215 | } |
| 216 | } |
| 217 | |
| 218 | static void sd_1d97_int(int *p, int i0, int i1) |
| 219 | { |
| 220 | int i; |
| 221 | |
| 222 | if (i1 == i0 + 1) |
| 223 | return; |
| 224 | |
| 225 | extend97_int(p, i0, i1); |
| 226 | i0++; i1++; |
| 227 | |
| 228 | for (i = i0/2 - 2; i < i1/2 + 1; i++) |
| 229 | p[2 * i + 1] -= (I_LFTG_ALPHA * (p[2 * i] + p[2 * i + 2]) + (1 << 15)) >> 16; |
| 230 | for (i = i0/2 - 1; i < i1/2 + 1; i++) |
| 231 | p[2 * i] -= (I_LFTG_BETA * (p[2 * i - 1] + p[2 * i + 1]) + (1 << 15)) >> 16; |
| 232 | for (i = i0/2 - 1; i < i1/2; i++) |
| 233 | p[2 * i + 1] += (I_LFTG_GAMMA * (p[2 * i] + p[2 * i + 2]) + (1 << 15)) >> 16; |
| 234 | for (i = i0/2; i < i1/2; i++) |
| 235 | p[2 * i] += (I_LFTG_DELTA * (p[2 * i - 1] + p[2 * i + 1]) + (1 << 15)) >> 16; |
| 236 | } |
| 237 | |
| 238 | static void dwt_encode97_int(DWTContext *s, int *t) |
| 239 | { |
| 240 | int lev, |
| 241 | w = s->linelen[s->ndeclevels-1][0]; |
| 242 | int *line = s->i_linebuf; |
| 243 | line += 5; |
| 244 | |
| 245 | for (lev = s->ndeclevels-1; lev >= 0; lev--){ |
| 246 | int lh = s->linelen[lev][0], |
| 247 | lv = s->linelen[lev][1], |
| 248 | mh = s->mod[lev][0], |
| 249 | mv = s->mod[lev][1], |
| 250 | lp; |
| 251 | int *l; |
| 252 | |
| 253 | // HOR_SD |
| 254 | l = line + mh; |
| 255 | for (lp = 0; lp < lv; lp++){ |
| 256 | int i, j = 0; |
| 257 | |
| 258 | for (i = 0; i < lh; i++) |
| 259 | l[i] = t[w*lp + i]; |
| 260 | |
| 261 | sd_1d97_int(line, mh, mh + lh); |
| 262 | |
| 263 | // copy back and deinterleave |
| 264 | for (i = mh; i < lh; i+=2, j++) |
| 265 | t[w*lp + j] = ((l[i] * I_LFTG_X) + (1 << 16)) >> 17; |
| 266 | for (i = 1-mh; i < lh; i+=2, j++) |
| 267 | t[w*lp + j] = ((l[i] * I_LFTG_K) + (1 << 16)) >> 17; |
| 268 | } |
| 269 | |
| 270 | // VER_SD |
| 271 | l = line + mv; |
| 272 | for (lp = 0; lp < lh; lp++) { |
| 273 | int i, j = 0; |
| 274 | |
| 275 | for (i = 0; i < lv; i++) |
| 276 | l[i] = t[w*i + lp]; |
| 277 | |
| 278 | sd_1d97_int(line, mv, mv + lv); |
| 279 | |
| 280 | // copy back and deinterleave |
| 281 | for (i = mv; i < lv; i+=2, j++) |
| 282 | t[w*j + lp] = ((l[i] * I_LFTG_X) + (1 << 16)) >> 17; |
| 283 | for (i = 1-mv; i < lv; i+=2, j++) |
| 284 | t[w*j + lp] = ((l[i] * I_LFTG_K) + (1 << 16)) >> 17; |
| 285 | } |
| 286 | } |
| 287 | } |
| 288 | |
| 289 | static void sr_1d53(int *p, int i0, int i1) |
| 290 | { |
| 291 | int i; |
| 292 | |
| 293 | if (i1 == i0 + 1) |
| 294 | return; |
| 295 | |
| 296 | extend53(p, i0, i1); |
| 297 | |
| 298 | for (i = i0 / 2; i < i1 / 2 + 1; i++) |
| 299 | p[2 * i] -= (p[2 * i - 1] + p[2 * i + 1] + 2) >> 2; |
| 300 | for (i = i0 / 2; i < i1 / 2; i++) |
| 301 | p[2 * i + 1] += (p[2 * i] + p[2 * i + 2]) >> 1; |
| 302 | } |
| 303 | |
| 304 | static void dwt_decode53(DWTContext *s, int *t) |
| 305 | { |
| 306 | int lev; |
| 307 | int w = s->linelen[s->ndeclevels - 1][0]; |
| 308 | int32_t *line = s->i_linebuf; |
| 309 | line += 3; |
| 310 | |
| 311 | for (lev = 0; lev < s->ndeclevels; lev++) { |
| 312 | int lh = s->linelen[lev][0], |
| 313 | lv = s->linelen[lev][1], |
| 314 | mh = s->mod[lev][0], |
| 315 | mv = s->mod[lev][1], |
| 316 | lp; |
| 317 | int *l; |
| 318 | |
| 319 | // HOR_SD |
| 320 | l = line + mh; |
| 321 | for (lp = 0; lp < lv; lp++) { |
| 322 | int i, j = 0; |
| 323 | // copy with interleaving |
| 324 | for (i = mh; i < lh; i += 2, j++) |
| 325 | l[i] = t[w * lp + j]; |
| 326 | for (i = 1 - mh; i < lh; i += 2, j++) |
| 327 | l[i] = t[w * lp + j]; |
| 328 | |
| 329 | sr_1d53(line, mh, mh + lh); |
| 330 | |
| 331 | for (i = 0; i < lh; i++) |
| 332 | t[w * lp + i] = l[i]; |
| 333 | } |
| 334 | |
| 335 | // VER_SD |
| 336 | l = line + mv; |
| 337 | for (lp = 0; lp < lh; lp++) { |
| 338 | int i, j = 0; |
| 339 | // copy with interleaving |
| 340 | for (i = mv; i < lv; i += 2, j++) |
| 341 | l[i] = t[w * j + lp]; |
| 342 | for (i = 1 - mv; i < lv; i += 2, j++) |
| 343 | l[i] = t[w * j + lp]; |
| 344 | |
| 345 | sr_1d53(line, mv, mv + lv); |
| 346 | |
| 347 | for (i = 0; i < lv; i++) |
| 348 | t[w * i + lp] = l[i]; |
| 349 | } |
| 350 | } |
| 351 | } |
| 352 | |
| 353 | static void sr_1d97_float(float *p, int i0, int i1) |
| 354 | { |
| 355 | int i; |
| 356 | |
| 357 | if (i1 == i0 + 1) |
| 358 | return; |
| 359 | |
| 360 | extend97_float(p, i0, i1); |
| 361 | |
| 362 | for (i = i0 / 2 - 1; i < i1 / 2 + 2; i++) |
| 363 | p[2 * i] -= F_LFTG_DELTA * (p[2 * i - 1] + p[2 * i + 1]); |
| 364 | /* step 4 */ |
| 365 | for (i = i0 / 2 - 1; i < i1 / 2 + 1; i++) |
| 366 | p[2 * i + 1] -= F_LFTG_GAMMA * (p[2 * i] + p[2 * i + 2]); |
| 367 | /*step 5*/ |
| 368 | for (i = i0 / 2; i < i1 / 2 + 1; i++) |
| 369 | p[2 * i] += F_LFTG_BETA * (p[2 * i - 1] + p[2 * i + 1]); |
| 370 | /* step 6 */ |
| 371 | for (i = i0 / 2; i < i1 / 2; i++) |
| 372 | p[2 * i + 1] += F_LFTG_ALPHA * (p[2 * i] + p[2 * i + 2]); |
| 373 | } |
| 374 | |
| 375 | static void dwt_decode97_float(DWTContext *s, float *t) |
| 376 | { |
| 377 | int lev; |
| 378 | int w = s->linelen[s->ndeclevels - 1][0]; |
| 379 | float *line = s->f_linebuf; |
| 380 | float *data = t; |
| 381 | /* position at index O of line range [0-5,w+5] cf. extend function */ |
| 382 | line += 5; |
| 383 | |
| 384 | for (lev = 0; lev < s->ndeclevels; lev++) { |
| 385 | int lh = s->linelen[lev][0], |
| 386 | lv = s->linelen[lev][1], |
| 387 | mh = s->mod[lev][0], |
| 388 | mv = s->mod[lev][1], |
| 389 | lp; |
| 390 | float *l; |
| 391 | // HOR_SD |
| 392 | l = line + mh; |
| 393 | for (lp = 0; lp < lv; lp++) { |
| 394 | int i, j = 0; |
| 395 | // copy with interleaving |
| 396 | for (i = mh; i < lh; i += 2, j++) |
| 397 | l[i] = data[w * lp + j] * F_LFTG_K; |
| 398 | for (i = 1 - mh; i < lh; i += 2, j++) |
| 399 | l[i] = data[w * lp + j] * F_LFTG_X; |
| 400 | |
| 401 | sr_1d97_float(line, mh, mh + lh); |
| 402 | |
| 403 | for (i = 0; i < lh; i++) |
| 404 | data[w * lp + i] = l[i]; |
| 405 | } |
| 406 | |
| 407 | // VER_SD |
| 408 | l = line + mv; |
| 409 | for (lp = 0; lp < lh; lp++) { |
| 410 | int i, j = 0; |
| 411 | // copy with interleaving |
| 412 | for (i = mv; i < lv; i += 2, j++) |
| 413 | l[i] = data[w * j + lp] * F_LFTG_K; |
| 414 | for (i = 1 - mv; i < lv; i += 2, j++) |
| 415 | l[i] = data[w * j + lp] * F_LFTG_X; |
| 416 | |
| 417 | sr_1d97_float(line, mv, mv + lv); |
| 418 | |
| 419 | for (i = 0; i < lv; i++) |
| 420 | data[w * i + lp] = l[i]; |
| 421 | } |
| 422 | } |
| 423 | } |
| 424 | |
| 425 | static void sr_1d97_int(int32_t *p, int i0, int i1) |
| 426 | { |
| 427 | int i; |
| 428 | |
| 429 | if (i1 == i0 + 1) |
| 430 | return; |
| 431 | |
| 432 | extend97_int(p, i0, i1); |
| 433 | |
| 434 | for (i = i0 / 2 - 1; i < i1 / 2 + 2; i++) |
| 435 | p[2 * i] -= (I_LFTG_DELTA * (p[2 * i - 1] + p[2 * i + 1]) + (1 << 15)) >> 16; |
| 436 | /* step 4 */ |
| 437 | for (i = i0 / 2 - 1; i < i1 / 2 + 1; i++) |
| 438 | p[2 * i + 1] -= (I_LFTG_GAMMA * (p[2 * i] + p[2 * i + 2]) + (1 << 15)) >> 16; |
| 439 | /*step 5*/ |
| 440 | for (i = i0 / 2; i < i1 / 2 + 1; i++) |
| 441 | p[2 * i] += (I_LFTG_BETA * (p[2 * i - 1] + p[2 * i + 1]) + (1 << 15)) >> 16; |
| 442 | /* step 6 */ |
| 443 | for (i = i0 / 2; i < i1 / 2; i++) |
| 444 | p[2 * i + 1] += (I_LFTG_ALPHA * (p[2 * i] + p[2 * i + 2]) + (1 << 15)) >> 16; |
| 445 | } |
| 446 | |
| 447 | static void dwt_decode97_int(DWTContext *s, int32_t *t) |
| 448 | { |
| 449 | int lev; |
| 450 | int w = s->linelen[s->ndeclevels - 1][0]; |
| 451 | int32_t *line = s->i_linebuf; |
| 452 | int32_t *data = t; |
| 453 | /* position at index O of line range [0-5,w+5] cf. extend function */ |
| 454 | line += 5; |
| 455 | |
| 456 | for (lev = 0; lev < s->ndeclevels; lev++) { |
| 457 | int lh = s->linelen[lev][0], |
| 458 | lv = s->linelen[lev][1], |
| 459 | mh = s->mod[lev][0], |
| 460 | mv = s->mod[lev][1], |
| 461 | lp; |
| 462 | int32_t *l; |
| 463 | // HOR_SD |
| 464 | l = line + mh; |
| 465 | for (lp = 0; lp < lv; lp++) { |
| 466 | int i, j = 0; |
| 467 | // rescale with interleaving |
| 468 | for (i = mh; i < lh; i += 2, j++) |
| 469 | l[i] = ((data[w * lp + j] * I_LFTG_K) + (1 << 15)) >> 16; |
| 470 | for (i = 1 - mh; i < lh; i += 2, j++) |
| 471 | l[i] = ((data[w * lp + j] * I_LFTG_X) + (1 << 15)) >> 16; |
| 472 | |
| 473 | sr_1d97_int(line, mh, mh + lh); |
| 474 | |
| 475 | for (i = 0; i < lh; i++) |
| 476 | data[w * lp + i] = l[i]; |
| 477 | } |
| 478 | |
| 479 | // VER_SD |
| 480 | l = line + mv; |
| 481 | for (lp = 0; lp < lh; lp++) { |
| 482 | int i, j = 0; |
| 483 | // rescale with interleaving |
| 484 | for (i = mv; i < lv; i += 2, j++) |
| 485 | l[i] = ((data[w * j + lp] * I_LFTG_K) + (1 << 15)) >> 16; |
| 486 | for (i = 1 - mv; i < lv; i += 2, j++) |
| 487 | l[i] = ((data[w * j + lp] * I_LFTG_X) + (1 << 15)) >> 16; |
| 488 | |
| 489 | sr_1d97_int(line, mv, mv + lv); |
| 490 | |
| 491 | for (i = 0; i < lv; i++) |
| 492 | data[w * i + lp] = l[i]; |
| 493 | } |
| 494 | } |
| 495 | } |
| 496 | |
| 497 | int ff_jpeg2000_dwt_init(DWTContext *s, uint16_t border[2][2], |
| 498 | int decomp_levels, int type) |
| 499 | { |
| 500 | int i, j, lev = decomp_levels, maxlen, |
| 501 | b[2][2]; |
| 502 | |
| 503 | s->ndeclevels = decomp_levels; |
| 504 | s->type = type; |
| 505 | |
| 506 | for (i = 0; i < 2; i++) |
| 507 | for (j = 0; j < 2; j++) |
| 508 | b[i][j] = border[i][j]; |
| 509 | |
| 510 | maxlen = FFMAX(b[0][1] - b[0][0], |
| 511 | b[1][1] - b[1][0]); |
| 512 | while (--lev >= 0) |
| 513 | for (i = 0; i < 2; i++) { |
| 514 | s->linelen[lev][i] = b[i][1] - b[i][0]; |
| 515 | s->mod[lev][i] = b[i][0] & 1; |
| 516 | for (j = 0; j < 2; j++) |
| 517 | b[i][j] = (b[i][j] + 1) >> 1; |
| 518 | } |
| 519 | switch (type) { |
| 520 | case FF_DWT97: |
| 521 | s->f_linebuf = av_malloc_array((maxlen + 12), sizeof(*s->f_linebuf)); |
| 522 | if (!s->f_linebuf) |
| 523 | return AVERROR(ENOMEM); |
| 524 | break; |
| 525 | case FF_DWT97_INT: |
| 526 | s->i_linebuf = av_malloc_array((maxlen + 12), sizeof(*s->i_linebuf)); |
| 527 | if (!s->i_linebuf) |
| 528 | return AVERROR(ENOMEM); |
| 529 | break; |
| 530 | case FF_DWT53: |
| 531 | s->i_linebuf = av_malloc_array((maxlen + 6), sizeof(*s->i_linebuf)); |
| 532 | if (!s->i_linebuf) |
| 533 | return AVERROR(ENOMEM); |
| 534 | break; |
| 535 | default: |
| 536 | return -1; |
| 537 | } |
| 538 | return 0; |
| 539 | } |
| 540 | |
| 541 | int ff_dwt_encode(DWTContext *s, void *t) |
| 542 | { |
| 543 | switch(s->type){ |
| 544 | case FF_DWT97: |
| 545 | dwt_encode97_float(s, t); break; |
| 546 | case FF_DWT97_INT: |
| 547 | dwt_encode97_int(s, t); break; |
| 548 | case FF_DWT53: |
| 549 | dwt_encode53(s, t); break; |
| 550 | default: |
| 551 | return -1; |
| 552 | } |
| 553 | return 0; |
| 554 | } |
| 555 | |
| 556 | int ff_dwt_decode(DWTContext *s, void *t) |
| 557 | { |
| 558 | switch (s->type) { |
| 559 | case FF_DWT97: |
| 560 | dwt_decode97_float(s, t); |
| 561 | break; |
| 562 | case FF_DWT97_INT: |
| 563 | dwt_decode97_int(s, t); |
| 564 | break; |
| 565 | case FF_DWT53: |
| 566 | dwt_decode53(s, t); |
| 567 | break; |
| 568 | default: |
| 569 | return -1; |
| 570 | } |
| 571 | return 0; |
| 572 | } |
| 573 | |
| 574 | void ff_dwt_destroy(DWTContext *s) |
| 575 | { |
| 576 | av_freep(&s->f_linebuf); |
| 577 | av_freep(&s->i_linebuf); |
| 578 | } |