| 1 | /* |
| 2 | * Ut Video decoder |
| 3 | * Copyright (c) 2011 Konstantin Shishkov |
| 4 | * |
| 5 | * This file is part of FFmpeg. |
| 6 | * |
| 7 | * FFmpeg is free software; you can redistribute it and/or |
| 8 | * modify it under the terms of the GNU Lesser General Public |
| 9 | * License as published by the Free Software Foundation; either |
| 10 | * version 2.1 of the License, or (at your option) any later version. |
| 11 | * |
| 12 | * FFmpeg is distributed in the hope that it will be useful, |
| 13 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 14 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
| 15 | * Lesser General Public License for more details. |
| 16 | * |
| 17 | * You should have received a copy of the GNU Lesser General Public |
| 18 | * License along with FFmpeg; if not, write to the Free Software |
| 19 | * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA |
| 20 | */ |
| 21 | |
| 22 | /** |
| 23 | * @file |
| 24 | * Ut Video decoder |
| 25 | */ |
| 26 | |
| 27 | #include <inttypes.h> |
| 28 | #include <stdlib.h> |
| 29 | |
| 30 | #include "libavutil/intreadwrite.h" |
| 31 | #include "avcodec.h" |
| 32 | #include "bswapdsp.h" |
| 33 | #include "bytestream.h" |
| 34 | #include "get_bits.h" |
| 35 | #include "thread.h" |
| 36 | #include "utvideo.h" |
| 37 | |
| 38 | static int build_huff(const uint8_t *src, VLC *vlc, int *fsym) |
| 39 | { |
| 40 | int i; |
| 41 | HuffEntry he[256]; |
| 42 | int last; |
| 43 | uint32_t codes[256]; |
| 44 | uint8_t bits[256]; |
| 45 | uint8_t syms[256]; |
| 46 | uint32_t code; |
| 47 | |
| 48 | *fsym = -1; |
| 49 | for (i = 0; i < 256; i++) { |
| 50 | he[i].sym = i; |
| 51 | he[i].len = *src++; |
| 52 | } |
| 53 | qsort(he, 256, sizeof(*he), ff_ut_huff_cmp_len); |
| 54 | |
| 55 | if (!he[0].len) { |
| 56 | *fsym = he[0].sym; |
| 57 | return 0; |
| 58 | } |
| 59 | if (he[0].len > 32) |
| 60 | return -1; |
| 61 | |
| 62 | last = 255; |
| 63 | while (he[last].len == 255 && last) |
| 64 | last--; |
| 65 | |
| 66 | code = 1; |
| 67 | for (i = last; i >= 0; i--) { |
| 68 | codes[i] = code >> (32 - he[i].len); |
| 69 | bits[i] = he[i].len; |
| 70 | syms[i] = he[i].sym; |
| 71 | code += 0x80000000u >> (he[i].len - 1); |
| 72 | } |
| 73 | |
| 74 | return ff_init_vlc_sparse(vlc, FFMIN(he[last].len, 11), last + 1, |
| 75 | bits, sizeof(*bits), sizeof(*bits), |
| 76 | codes, sizeof(*codes), sizeof(*codes), |
| 77 | syms, sizeof(*syms), sizeof(*syms), 0); |
| 78 | } |
| 79 | |
| 80 | static int decode_plane(UtvideoContext *c, int plane_no, |
| 81 | uint8_t *dst, int step, int stride, |
| 82 | int width, int height, |
| 83 | const uint8_t *src, int use_pred) |
| 84 | { |
| 85 | int i, j, slice, pix; |
| 86 | int sstart, send; |
| 87 | VLC vlc; |
| 88 | GetBitContext gb; |
| 89 | int prev, fsym; |
| 90 | const int cmask = ~(!plane_no && c->avctx->pix_fmt == AV_PIX_FMT_YUV420P); |
| 91 | |
| 92 | if (build_huff(src, &vlc, &fsym)) { |
| 93 | av_log(c->avctx, AV_LOG_ERROR, "Cannot build Huffman codes\n"); |
| 94 | return AVERROR_INVALIDDATA; |
| 95 | } |
| 96 | if (fsym >= 0) { // build_huff reported a symbol to fill slices with |
| 97 | send = 0; |
| 98 | for (slice = 0; slice < c->slices; slice++) { |
| 99 | uint8_t *dest; |
| 100 | |
| 101 | sstart = send; |
| 102 | send = (height * (slice + 1) / c->slices) & cmask; |
| 103 | dest = dst + sstart * stride; |
| 104 | |
| 105 | prev = 0x80; |
| 106 | for (j = sstart; j < send; j++) { |
| 107 | for (i = 0; i < width * step; i += step) { |
| 108 | pix = fsym; |
| 109 | if (use_pred) { |
| 110 | prev += pix; |
| 111 | pix = prev; |
| 112 | } |
| 113 | dest[i] = pix; |
| 114 | } |
| 115 | dest += stride; |
| 116 | } |
| 117 | } |
| 118 | return 0; |
| 119 | } |
| 120 | |
| 121 | src += 256; |
| 122 | |
| 123 | send = 0; |
| 124 | for (slice = 0; slice < c->slices; slice++) { |
| 125 | uint8_t *dest; |
| 126 | int slice_data_start, slice_data_end, slice_size; |
| 127 | |
| 128 | sstart = send; |
| 129 | send = (height * (slice + 1) / c->slices) & cmask; |
| 130 | dest = dst + sstart * stride; |
| 131 | |
| 132 | // slice offset and size validation was done earlier |
| 133 | slice_data_start = slice ? AV_RL32(src + slice * 4 - 4) : 0; |
| 134 | slice_data_end = AV_RL32(src + slice * 4); |
| 135 | slice_size = slice_data_end - slice_data_start; |
| 136 | |
| 137 | if (!slice_size) { |
| 138 | av_log(c->avctx, AV_LOG_ERROR, "Plane has more than one symbol " |
| 139 | "yet a slice has a length of zero.\n"); |
| 140 | goto fail; |
| 141 | } |
| 142 | |
| 143 | memcpy(c->slice_bits, src + slice_data_start + c->slices * 4, |
| 144 | slice_size); |
| 145 | memset(c->slice_bits + slice_size, 0, FF_INPUT_BUFFER_PADDING_SIZE); |
| 146 | c->bdsp.bswap_buf((uint32_t *) c->slice_bits, |
| 147 | (uint32_t *) c->slice_bits, |
| 148 | (slice_data_end - slice_data_start + 3) >> 2); |
| 149 | init_get_bits(&gb, c->slice_bits, slice_size * 8); |
| 150 | |
| 151 | prev = 0x80; |
| 152 | for (j = sstart; j < send; j++) { |
| 153 | for (i = 0; i < width * step; i += step) { |
| 154 | if (get_bits_left(&gb) <= 0) { |
| 155 | av_log(c->avctx, AV_LOG_ERROR, |
| 156 | "Slice decoding ran out of bits\n"); |
| 157 | goto fail; |
| 158 | } |
| 159 | pix = get_vlc2(&gb, vlc.table, vlc.bits, 3); |
| 160 | if (pix < 0) { |
| 161 | av_log(c->avctx, AV_LOG_ERROR, "Decoding error\n"); |
| 162 | goto fail; |
| 163 | } |
| 164 | if (use_pred) { |
| 165 | prev += pix; |
| 166 | pix = prev; |
| 167 | } |
| 168 | dest[i] = pix; |
| 169 | } |
| 170 | dest += stride; |
| 171 | } |
| 172 | if (get_bits_left(&gb) > 32) |
| 173 | av_log(c->avctx, AV_LOG_WARNING, |
| 174 | "%d bits left after decoding slice\n", get_bits_left(&gb)); |
| 175 | } |
| 176 | |
| 177 | ff_free_vlc(&vlc); |
| 178 | |
| 179 | return 0; |
| 180 | fail: |
| 181 | ff_free_vlc(&vlc); |
| 182 | return AVERROR_INVALIDDATA; |
| 183 | } |
| 184 | |
| 185 | static void restore_rgb_planes(uint8_t *src, int step, int stride, int width, |
| 186 | int height) |
| 187 | { |
| 188 | int i, j; |
| 189 | uint8_t r, g, b; |
| 190 | |
| 191 | for (j = 0; j < height; j++) { |
| 192 | for (i = 0; i < width * step; i += step) { |
| 193 | r = src[i]; |
| 194 | g = src[i + 1]; |
| 195 | b = src[i + 2]; |
| 196 | src[i] = r + g - 0x80; |
| 197 | src[i + 2] = b + g - 0x80; |
| 198 | } |
| 199 | src += stride; |
| 200 | } |
| 201 | } |
| 202 | |
| 203 | static void restore_median(uint8_t *src, int step, int stride, |
| 204 | int width, int height, int slices, int rmode) |
| 205 | { |
| 206 | int i, j, slice; |
| 207 | int A, B, C; |
| 208 | uint8_t *bsrc; |
| 209 | int slice_start, slice_height; |
| 210 | const int cmask = ~rmode; |
| 211 | |
| 212 | for (slice = 0; slice < slices; slice++) { |
| 213 | slice_start = ((slice * height) / slices) & cmask; |
| 214 | slice_height = ((((slice + 1) * height) / slices) & cmask) - |
| 215 | slice_start; |
| 216 | |
| 217 | bsrc = src + slice_start * stride; |
| 218 | |
| 219 | // first line - left neighbour prediction |
| 220 | bsrc[0] += 0x80; |
| 221 | A = bsrc[0]; |
| 222 | for (i = step; i < width * step; i += step) { |
| 223 | bsrc[i] += A; |
| 224 | A = bsrc[i]; |
| 225 | } |
| 226 | bsrc += stride; |
| 227 | if (slice_height == 1) |
| 228 | continue; |
| 229 | // second line - first element has top prediction, the rest uses median |
| 230 | C = bsrc[-stride]; |
| 231 | bsrc[0] += C; |
| 232 | A = bsrc[0]; |
| 233 | for (i = step; i < width * step; i += step) { |
| 234 | B = bsrc[i - stride]; |
| 235 | bsrc[i] += mid_pred(A, B, (uint8_t)(A + B - C)); |
| 236 | C = B; |
| 237 | A = bsrc[i]; |
| 238 | } |
| 239 | bsrc += stride; |
| 240 | // the rest of lines use continuous median prediction |
| 241 | for (j = 2; j < slice_height; j++) { |
| 242 | for (i = 0; i < width * step; i += step) { |
| 243 | B = bsrc[i - stride]; |
| 244 | bsrc[i] += mid_pred(A, B, (uint8_t)(A + B - C)); |
| 245 | C = B; |
| 246 | A = bsrc[i]; |
| 247 | } |
| 248 | bsrc += stride; |
| 249 | } |
| 250 | } |
| 251 | } |
| 252 | |
| 253 | /* UtVideo interlaced mode treats every two lines as a single one, |
| 254 | * so restoring function should take care of possible padding between |
| 255 | * two parts of the same "line". |
| 256 | */ |
| 257 | static void restore_median_il(uint8_t *src, int step, int stride, |
| 258 | int width, int height, int slices, int rmode) |
| 259 | { |
| 260 | int i, j, slice; |
| 261 | int A, B, C; |
| 262 | uint8_t *bsrc; |
| 263 | int slice_start, slice_height; |
| 264 | const int cmask = ~(rmode ? 3 : 1); |
| 265 | const int stride2 = stride << 1; |
| 266 | |
| 267 | for (slice = 0; slice < slices; slice++) { |
| 268 | slice_start = ((slice * height) / slices) & cmask; |
| 269 | slice_height = ((((slice + 1) * height) / slices) & cmask) - |
| 270 | slice_start; |
| 271 | slice_height >>= 1; |
| 272 | |
| 273 | bsrc = src + slice_start * stride; |
| 274 | |
| 275 | // first line - left neighbour prediction |
| 276 | bsrc[0] += 0x80; |
| 277 | A = bsrc[0]; |
| 278 | for (i = step; i < width * step; i += step) { |
| 279 | bsrc[i] += A; |
| 280 | A = bsrc[i]; |
| 281 | } |
| 282 | for (i = 0; i < width * step; i += step) { |
| 283 | bsrc[stride + i] += A; |
| 284 | A = bsrc[stride + i]; |
| 285 | } |
| 286 | bsrc += stride2; |
| 287 | if (slice_height == 1) |
| 288 | continue; |
| 289 | // second line - first element has top prediction, the rest uses median |
| 290 | C = bsrc[-stride2]; |
| 291 | bsrc[0] += C; |
| 292 | A = bsrc[0]; |
| 293 | for (i = step; i < width * step; i += step) { |
| 294 | B = bsrc[i - stride2]; |
| 295 | bsrc[i] += mid_pred(A, B, (uint8_t)(A + B - C)); |
| 296 | C = B; |
| 297 | A = bsrc[i]; |
| 298 | } |
| 299 | for (i = 0; i < width * step; i += step) { |
| 300 | B = bsrc[i - stride]; |
| 301 | bsrc[stride + i] += mid_pred(A, B, (uint8_t)(A + B - C)); |
| 302 | C = B; |
| 303 | A = bsrc[stride + i]; |
| 304 | } |
| 305 | bsrc += stride2; |
| 306 | // the rest of lines use continuous median prediction |
| 307 | for (j = 2; j < slice_height; j++) { |
| 308 | for (i = 0; i < width * step; i += step) { |
| 309 | B = bsrc[i - stride2]; |
| 310 | bsrc[i] += mid_pred(A, B, (uint8_t)(A + B - C)); |
| 311 | C = B; |
| 312 | A = bsrc[i]; |
| 313 | } |
| 314 | for (i = 0; i < width * step; i += step) { |
| 315 | B = bsrc[i - stride]; |
| 316 | bsrc[i + stride] += mid_pred(A, B, (uint8_t)(A + B - C)); |
| 317 | C = B; |
| 318 | A = bsrc[i + stride]; |
| 319 | } |
| 320 | bsrc += stride2; |
| 321 | } |
| 322 | } |
| 323 | } |
| 324 | |
| 325 | static int decode_frame(AVCodecContext *avctx, void *data, int *got_frame, |
| 326 | AVPacket *avpkt) |
| 327 | { |
| 328 | const uint8_t *buf = avpkt->data; |
| 329 | int buf_size = avpkt->size; |
| 330 | UtvideoContext *c = avctx->priv_data; |
| 331 | int i, j; |
| 332 | const uint8_t *plane_start[5]; |
| 333 | int plane_size, max_slice_size = 0, slice_start, slice_end, slice_size; |
| 334 | int ret; |
| 335 | GetByteContext gb; |
| 336 | ThreadFrame frame = { .f = data }; |
| 337 | |
| 338 | if ((ret = ff_thread_get_buffer(avctx, &frame, 0)) < 0) |
| 339 | return ret; |
| 340 | |
| 341 | /* parse plane structure to get frame flags and validate slice offsets */ |
| 342 | bytestream2_init(&gb, buf, buf_size); |
| 343 | for (i = 0; i < c->planes; i++) { |
| 344 | plane_start[i] = gb.buffer; |
| 345 | if (bytestream2_get_bytes_left(&gb) < 256 + 4 * c->slices) { |
| 346 | av_log(avctx, AV_LOG_ERROR, "Insufficient data for a plane\n"); |
| 347 | return AVERROR_INVALIDDATA; |
| 348 | } |
| 349 | bytestream2_skipu(&gb, 256); |
| 350 | slice_start = 0; |
| 351 | slice_end = 0; |
| 352 | for (j = 0; j < c->slices; j++) { |
| 353 | slice_end = bytestream2_get_le32u(&gb); |
| 354 | slice_size = slice_end - slice_start; |
| 355 | if (slice_end < 0 || slice_size < 0 || |
| 356 | bytestream2_get_bytes_left(&gb) < slice_end) { |
| 357 | av_log(avctx, AV_LOG_ERROR, "Incorrect slice size\n"); |
| 358 | return AVERROR_INVALIDDATA; |
| 359 | } |
| 360 | slice_start = slice_end; |
| 361 | max_slice_size = FFMAX(max_slice_size, slice_size); |
| 362 | } |
| 363 | plane_size = slice_end; |
| 364 | bytestream2_skipu(&gb, plane_size); |
| 365 | } |
| 366 | plane_start[c->planes] = gb.buffer; |
| 367 | if (bytestream2_get_bytes_left(&gb) < c->frame_info_size) { |
| 368 | av_log(avctx, AV_LOG_ERROR, "Not enough data for frame information\n"); |
| 369 | return AVERROR_INVALIDDATA; |
| 370 | } |
| 371 | c->frame_info = bytestream2_get_le32u(&gb); |
| 372 | av_log(avctx, AV_LOG_DEBUG, "frame information flags %"PRIX32"\n", |
| 373 | c->frame_info); |
| 374 | |
| 375 | c->frame_pred = (c->frame_info >> 8) & 3; |
| 376 | |
| 377 | if (c->frame_pred == PRED_GRADIENT) { |
| 378 | avpriv_request_sample(avctx, "Frame with gradient prediction"); |
| 379 | return AVERROR_PATCHWELCOME; |
| 380 | } |
| 381 | |
| 382 | av_fast_malloc(&c->slice_bits, &c->slice_bits_size, |
| 383 | max_slice_size + FF_INPUT_BUFFER_PADDING_SIZE); |
| 384 | |
| 385 | if (!c->slice_bits) { |
| 386 | av_log(avctx, AV_LOG_ERROR, "Cannot allocate temporary buffer\n"); |
| 387 | return AVERROR(ENOMEM); |
| 388 | } |
| 389 | |
| 390 | switch (c->avctx->pix_fmt) { |
| 391 | case AV_PIX_FMT_RGB24: |
| 392 | case AV_PIX_FMT_RGBA: |
| 393 | for (i = 0; i < c->planes; i++) { |
| 394 | ret = decode_plane(c, i, frame.f->data[0] + ff_ut_rgb_order[i], |
| 395 | c->planes, frame.f->linesize[0], avctx->width, |
| 396 | avctx->height, plane_start[i], |
| 397 | c->frame_pred == PRED_LEFT); |
| 398 | if (ret) |
| 399 | return ret; |
| 400 | if (c->frame_pred == PRED_MEDIAN) { |
| 401 | if (!c->interlaced) { |
| 402 | restore_median(frame.f->data[0] + ff_ut_rgb_order[i], |
| 403 | c->planes, frame.f->linesize[0], avctx->width, |
| 404 | avctx->height, c->slices, 0); |
| 405 | } else { |
| 406 | restore_median_il(frame.f->data[0] + ff_ut_rgb_order[i], |
| 407 | c->planes, frame.f->linesize[0], |
| 408 | avctx->width, avctx->height, c->slices, |
| 409 | 0); |
| 410 | } |
| 411 | } |
| 412 | } |
| 413 | restore_rgb_planes(frame.f->data[0], c->planes, frame.f->linesize[0], |
| 414 | avctx->width, avctx->height); |
| 415 | break; |
| 416 | case AV_PIX_FMT_YUV420P: |
| 417 | for (i = 0; i < 3; i++) { |
| 418 | ret = decode_plane(c, i, frame.f->data[i], 1, frame.f->linesize[i], |
| 419 | avctx->width >> !!i, avctx->height >> !!i, |
| 420 | plane_start[i], c->frame_pred == PRED_LEFT); |
| 421 | if (ret) |
| 422 | return ret; |
| 423 | if (c->frame_pred == PRED_MEDIAN) { |
| 424 | if (!c->interlaced) { |
| 425 | restore_median(frame.f->data[i], 1, frame.f->linesize[i], |
| 426 | avctx->width >> !!i, avctx->height >> !!i, |
| 427 | c->slices, !i); |
| 428 | } else { |
| 429 | restore_median_il(frame.f->data[i], 1, frame.f->linesize[i], |
| 430 | avctx->width >> !!i, |
| 431 | avctx->height >> !!i, |
| 432 | c->slices, !i); |
| 433 | } |
| 434 | } |
| 435 | } |
| 436 | break; |
| 437 | case AV_PIX_FMT_YUV422P: |
| 438 | for (i = 0; i < 3; i++) { |
| 439 | ret = decode_plane(c, i, frame.f->data[i], 1, frame.f->linesize[i], |
| 440 | avctx->width >> !!i, avctx->height, |
| 441 | plane_start[i], c->frame_pred == PRED_LEFT); |
| 442 | if (ret) |
| 443 | return ret; |
| 444 | if (c->frame_pred == PRED_MEDIAN) { |
| 445 | if (!c->interlaced) { |
| 446 | restore_median(frame.f->data[i], 1, frame.f->linesize[i], |
| 447 | avctx->width >> !!i, avctx->height, |
| 448 | c->slices, 0); |
| 449 | } else { |
| 450 | restore_median_il(frame.f->data[i], 1, frame.f->linesize[i], |
| 451 | avctx->width >> !!i, avctx->height, |
| 452 | c->slices, 0); |
| 453 | } |
| 454 | } |
| 455 | } |
| 456 | break; |
| 457 | } |
| 458 | |
| 459 | frame.f->key_frame = 1; |
| 460 | frame.f->pict_type = AV_PICTURE_TYPE_I; |
| 461 | frame.f->interlaced_frame = !!c->interlaced; |
| 462 | |
| 463 | *got_frame = 1; |
| 464 | |
| 465 | /* always report that the buffer was completely consumed */ |
| 466 | return buf_size; |
| 467 | } |
| 468 | |
| 469 | static av_cold int decode_init(AVCodecContext *avctx) |
| 470 | { |
| 471 | UtvideoContext * const c = avctx->priv_data; |
| 472 | |
| 473 | c->avctx = avctx; |
| 474 | |
| 475 | ff_bswapdsp_init(&c->bdsp); |
| 476 | |
| 477 | if (avctx->extradata_size < 16) { |
| 478 | av_log(avctx, AV_LOG_ERROR, |
| 479 | "Insufficient extradata size %d, should be at least 16\n", |
| 480 | avctx->extradata_size); |
| 481 | return AVERROR_INVALIDDATA; |
| 482 | } |
| 483 | |
| 484 | av_log(avctx, AV_LOG_DEBUG, "Encoder version %d.%d.%d.%d\n", |
| 485 | avctx->extradata[3], avctx->extradata[2], |
| 486 | avctx->extradata[1], avctx->extradata[0]); |
| 487 | av_log(avctx, AV_LOG_DEBUG, "Original format %"PRIX32"\n", |
| 488 | AV_RB32(avctx->extradata + 4)); |
| 489 | c->frame_info_size = AV_RL32(avctx->extradata + 8); |
| 490 | c->flags = AV_RL32(avctx->extradata + 12); |
| 491 | |
| 492 | if (c->frame_info_size != 4) |
| 493 | avpriv_request_sample(avctx, "Frame info not 4 bytes"); |
| 494 | av_log(avctx, AV_LOG_DEBUG, "Encoding parameters %08"PRIX32"\n", c->flags); |
| 495 | c->slices = (c->flags >> 24) + 1; |
| 496 | c->compression = c->flags & 1; |
| 497 | c->interlaced = c->flags & 0x800; |
| 498 | |
| 499 | c->slice_bits_size = 0; |
| 500 | |
| 501 | switch (avctx->codec_tag) { |
| 502 | case MKTAG('U', 'L', 'R', 'G'): |
| 503 | c->planes = 3; |
| 504 | avctx->pix_fmt = AV_PIX_FMT_RGB24; |
| 505 | break; |
| 506 | case MKTAG('U', 'L', 'R', 'A'): |
| 507 | c->planes = 4; |
| 508 | avctx->pix_fmt = AV_PIX_FMT_RGBA; |
| 509 | break; |
| 510 | case MKTAG('U', 'L', 'Y', '0'): |
| 511 | c->planes = 3; |
| 512 | avctx->pix_fmt = AV_PIX_FMT_YUV420P; |
| 513 | avctx->colorspace = AVCOL_SPC_BT470BG; |
| 514 | break; |
| 515 | case MKTAG('U', 'L', 'Y', '2'): |
| 516 | c->planes = 3; |
| 517 | avctx->pix_fmt = AV_PIX_FMT_YUV422P; |
| 518 | avctx->colorspace = AVCOL_SPC_BT470BG; |
| 519 | break; |
| 520 | case MKTAG('U', 'L', 'H', '0'): |
| 521 | c->planes = 3; |
| 522 | avctx->pix_fmt = AV_PIX_FMT_YUV420P; |
| 523 | avctx->colorspace = AVCOL_SPC_BT709; |
| 524 | break; |
| 525 | case MKTAG('U', 'L', 'H', '2'): |
| 526 | c->planes = 3; |
| 527 | avctx->pix_fmt = AV_PIX_FMT_YUV422P; |
| 528 | avctx->colorspace = AVCOL_SPC_BT709; |
| 529 | break; |
| 530 | default: |
| 531 | av_log(avctx, AV_LOG_ERROR, "Unknown Ut Video FOURCC provided (%08X)\n", |
| 532 | avctx->codec_tag); |
| 533 | return AVERROR_INVALIDDATA; |
| 534 | } |
| 535 | |
| 536 | return 0; |
| 537 | } |
| 538 | |
| 539 | static av_cold int decode_end(AVCodecContext *avctx) |
| 540 | { |
| 541 | UtvideoContext * const c = avctx->priv_data; |
| 542 | |
| 543 | av_freep(&c->slice_bits); |
| 544 | |
| 545 | return 0; |
| 546 | } |
| 547 | |
| 548 | AVCodec ff_utvideo_decoder = { |
| 549 | .name = "utvideo", |
| 550 | .long_name = NULL_IF_CONFIG_SMALL("Ut Video"), |
| 551 | .type = AVMEDIA_TYPE_VIDEO, |
| 552 | .id = AV_CODEC_ID_UTVIDEO, |
| 553 | .priv_data_size = sizeof(UtvideoContext), |
| 554 | .init = decode_init, |
| 555 | .close = decode_end, |
| 556 | .decode = decode_frame, |
| 557 | .capabilities = CODEC_CAP_DR1 | CODEC_CAP_FRAME_THREADS, |
| 558 | }; |