| 1 | /* |
| 2 | * MPEG-1/2 decoder |
| 3 | * Copyright (c) 2000, 2001 Fabrice Bellard |
| 4 | * Copyright (c) 2002-2013 Michael Niedermayer <michaelni@gmx.at> |
| 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 | * MPEG-1/2 decoder |
| 26 | */ |
| 27 | |
| 28 | #define UNCHECKED_BITSTREAM_READER 1 |
| 29 | #include <inttypes.h> |
| 30 | |
| 31 | #include "libavutil/attributes.h" |
| 32 | #include "libavutil/internal.h" |
| 33 | #include "libavutil/stereo3d.h" |
| 34 | |
| 35 | #include "avcodec.h" |
| 36 | #include "bytestream.h" |
| 37 | #include "error_resilience.h" |
| 38 | #include "idctdsp.h" |
| 39 | #include "internal.h" |
| 40 | #include "mpeg_er.h" |
| 41 | #include "mpeg12.h" |
| 42 | #include "mpeg12data.h" |
| 43 | #include "mpegutils.h" |
| 44 | #include "mpegvideo.h" |
| 45 | #include "thread.h" |
| 46 | #include "version.h" |
| 47 | #include "vdpau_internal.h" |
| 48 | #include "xvmc_internal.h" |
| 49 | |
| 50 | typedef struct Mpeg1Context { |
| 51 | MpegEncContext mpeg_enc_ctx; |
| 52 | int mpeg_enc_ctx_allocated; /* true if decoding context allocated */ |
| 53 | int repeat_field; /* true if we must repeat the field */ |
| 54 | AVPanScan pan_scan; /* some temporary storage for the panscan */ |
| 55 | AVStereo3D stereo3d; |
| 56 | int has_stereo3d; |
| 57 | uint8_t *a53_caption; |
| 58 | int a53_caption_size; |
| 59 | uint8_t afd; |
| 60 | int has_afd; |
| 61 | int slice_count; |
| 62 | int save_aspect_info; |
| 63 | int save_width, save_height, save_progressive_seq; |
| 64 | AVRational frame_rate_ext; /* MPEG-2 specific framerate modificator */ |
| 65 | int sync; /* Did we reach a sync point like a GOP/SEQ/KEYFrame? */ |
| 66 | int tmpgexs; |
| 67 | int first_slice; |
| 68 | int extradata_decoded; |
| 69 | } Mpeg1Context; |
| 70 | |
| 71 | #define MB_TYPE_ZERO_MV 0x20000000 |
| 72 | |
| 73 | static const uint32_t ptype2mb_type[7] = { |
| 74 | MB_TYPE_INTRA, |
| 75 | MB_TYPE_L0 | MB_TYPE_CBP | MB_TYPE_ZERO_MV | MB_TYPE_16x16, |
| 76 | MB_TYPE_L0, |
| 77 | MB_TYPE_L0 | MB_TYPE_CBP, |
| 78 | MB_TYPE_QUANT | MB_TYPE_INTRA, |
| 79 | MB_TYPE_QUANT | MB_TYPE_L0 | MB_TYPE_CBP | MB_TYPE_ZERO_MV | MB_TYPE_16x16, |
| 80 | MB_TYPE_QUANT | MB_TYPE_L0 | MB_TYPE_CBP, |
| 81 | }; |
| 82 | |
| 83 | static const uint32_t btype2mb_type[11] = { |
| 84 | MB_TYPE_INTRA, |
| 85 | MB_TYPE_L1, |
| 86 | MB_TYPE_L1 | MB_TYPE_CBP, |
| 87 | MB_TYPE_L0, |
| 88 | MB_TYPE_L0 | MB_TYPE_CBP, |
| 89 | MB_TYPE_L0L1, |
| 90 | MB_TYPE_L0L1 | MB_TYPE_CBP, |
| 91 | MB_TYPE_QUANT | MB_TYPE_INTRA, |
| 92 | MB_TYPE_QUANT | MB_TYPE_L1 | MB_TYPE_CBP, |
| 93 | MB_TYPE_QUANT | MB_TYPE_L0 | MB_TYPE_CBP, |
| 94 | MB_TYPE_QUANT | MB_TYPE_L0L1 | MB_TYPE_CBP, |
| 95 | }; |
| 96 | |
| 97 | static const uint8_t non_linear_qscale[32] = { |
| 98 | 0, 1, 2, 3, 4, 5, 6, 7, |
| 99 | 8, 10, 12, 14, 16, 18, 20, 22, |
| 100 | 24, 28, 32, 36, 40, 44, 48, 52, |
| 101 | 56, 64, 72, 80, 88, 96, 104, 112, |
| 102 | }; |
| 103 | |
| 104 | /* as H.263, but only 17 codes */ |
| 105 | static int mpeg_decode_motion(MpegEncContext *s, int fcode, int pred) |
| 106 | { |
| 107 | int code, sign, val, shift; |
| 108 | |
| 109 | code = get_vlc2(&s->gb, ff_mv_vlc.table, MV_VLC_BITS, 2); |
| 110 | if (code == 0) |
| 111 | return pred; |
| 112 | if (code < 0) |
| 113 | return 0xffff; |
| 114 | |
| 115 | sign = get_bits1(&s->gb); |
| 116 | shift = fcode - 1; |
| 117 | val = code; |
| 118 | if (shift) { |
| 119 | val = (val - 1) << shift; |
| 120 | val |= get_bits(&s->gb, shift); |
| 121 | val++; |
| 122 | } |
| 123 | if (sign) |
| 124 | val = -val; |
| 125 | val += pred; |
| 126 | |
| 127 | /* modulo decoding */ |
| 128 | return sign_extend(val, 5 + shift); |
| 129 | } |
| 130 | |
| 131 | #define check_scantable_index(ctx, x) \ |
| 132 | do { \ |
| 133 | if ((x) > 63) { \ |
| 134 | av_log(ctx->avctx, AV_LOG_ERROR, "ac-tex damaged at %d %d\n", \ |
| 135 | ctx->mb_x, ctx->mb_y); \ |
| 136 | return AVERROR_INVALIDDATA; \ |
| 137 | } \ |
| 138 | } while (0) |
| 139 | |
| 140 | static inline int mpeg1_decode_block_intra(MpegEncContext *s, |
| 141 | int16_t *block, int n) |
| 142 | { |
| 143 | int level, dc, diff, i, j, run; |
| 144 | int component; |
| 145 | RLTable *rl = &ff_rl_mpeg1; |
| 146 | uint8_t *const scantable = s->intra_scantable.permutated; |
| 147 | const uint16_t *quant_matrix = s->intra_matrix; |
| 148 | const int qscale = s->qscale; |
| 149 | |
| 150 | /* DC coefficient */ |
| 151 | component = (n <= 3 ? 0 : n - 4 + 1); |
| 152 | diff = decode_dc(&s->gb, component); |
| 153 | if (diff >= 0xffff) |
| 154 | return -1; |
| 155 | dc = s->last_dc[component]; |
| 156 | dc += diff; |
| 157 | s->last_dc[component] = dc; |
| 158 | block[0] = dc * quant_matrix[0]; |
| 159 | av_dlog(s->avctx, "dc=%d diff=%d\n", dc, diff); |
| 160 | i = 0; |
| 161 | { |
| 162 | OPEN_READER(re, &s->gb); |
| 163 | UPDATE_CACHE(re, &s->gb); |
| 164 | if (((int32_t)GET_CACHE(re, &s->gb)) <= (int32_t)0xBFFFFFFF) |
| 165 | goto end; |
| 166 | |
| 167 | /* now quantify & encode AC coefficients */ |
| 168 | for (;;) { |
| 169 | GET_RL_VLC(level, run, re, &s->gb, rl->rl_vlc[0], |
| 170 | TEX_VLC_BITS, 2, 0); |
| 171 | |
| 172 | if (level != 0) { |
| 173 | i += run; |
| 174 | check_scantable_index(s, i); |
| 175 | j = scantable[i]; |
| 176 | level = (level * qscale * quant_matrix[j]) >> 4; |
| 177 | level = (level - 1) | 1; |
| 178 | level = (level ^ SHOW_SBITS(re, &s->gb, 1)) - |
| 179 | SHOW_SBITS(re, &s->gb, 1); |
| 180 | SKIP_BITS(re, &s->gb, 1); |
| 181 | } else { |
| 182 | /* escape */ |
| 183 | run = SHOW_UBITS(re, &s->gb, 6) + 1; |
| 184 | LAST_SKIP_BITS(re, &s->gb, 6); |
| 185 | UPDATE_CACHE(re, &s->gb); |
| 186 | level = SHOW_SBITS(re, &s->gb, 8); |
| 187 | SKIP_BITS(re, &s->gb, 8); |
| 188 | if (level == -128) { |
| 189 | level = SHOW_UBITS(re, &s->gb, 8) - 256; |
| 190 | SKIP_BITS(re, &s->gb, 8); |
| 191 | } else if (level == 0) { |
| 192 | level = SHOW_UBITS(re, &s->gb, 8); |
| 193 | SKIP_BITS(re, &s->gb, 8); |
| 194 | } |
| 195 | i += run; |
| 196 | check_scantable_index(s, i); |
| 197 | j = scantable[i]; |
| 198 | if (level < 0) { |
| 199 | level = -level; |
| 200 | level = (level * qscale * quant_matrix[j]) >> 4; |
| 201 | level = (level - 1) | 1; |
| 202 | level = -level; |
| 203 | } else { |
| 204 | level = (level * qscale * quant_matrix[j]) >> 4; |
| 205 | level = (level - 1) | 1; |
| 206 | } |
| 207 | } |
| 208 | |
| 209 | block[j] = level; |
| 210 | if (((int32_t)GET_CACHE(re, &s->gb)) <= (int32_t)0xBFFFFFFF) |
| 211 | break; |
| 212 | |
| 213 | UPDATE_CACHE(re, &s->gb); |
| 214 | } |
| 215 | end: |
| 216 | LAST_SKIP_BITS(re, &s->gb, 2); |
| 217 | CLOSE_READER(re, &s->gb); |
| 218 | } |
| 219 | s->block_last_index[n] = i; |
| 220 | return 0; |
| 221 | } |
| 222 | |
| 223 | int ff_mpeg1_decode_block_intra(MpegEncContext *s, int16_t *block, int n) |
| 224 | { |
| 225 | return mpeg1_decode_block_intra(s, block, n); |
| 226 | } |
| 227 | |
| 228 | static inline int mpeg1_decode_block_inter(MpegEncContext *s, |
| 229 | int16_t *block, int n) |
| 230 | { |
| 231 | int level, i, j, run; |
| 232 | RLTable *rl = &ff_rl_mpeg1; |
| 233 | uint8_t *const scantable = s->intra_scantable.permutated; |
| 234 | const uint16_t *quant_matrix = s->inter_matrix; |
| 235 | const int qscale = s->qscale; |
| 236 | |
| 237 | { |
| 238 | OPEN_READER(re, &s->gb); |
| 239 | i = -1; |
| 240 | // special case for first coefficient, no need to add second VLC table |
| 241 | UPDATE_CACHE(re, &s->gb); |
| 242 | if (((int32_t) GET_CACHE(re, &s->gb)) < 0) { |
| 243 | level = (3 * qscale * quant_matrix[0]) >> 5; |
| 244 | level = (level - 1) | 1; |
| 245 | if (GET_CACHE(re, &s->gb) & 0x40000000) |
| 246 | level = -level; |
| 247 | block[0] = level; |
| 248 | i++; |
| 249 | SKIP_BITS(re, &s->gb, 2); |
| 250 | if (((int32_t) GET_CACHE(re, &s->gb)) <= (int32_t) 0xBFFFFFFF) |
| 251 | goto end; |
| 252 | } |
| 253 | /* now quantify & encode AC coefficients */ |
| 254 | for (;;) { |
| 255 | GET_RL_VLC(level, run, re, &s->gb, rl->rl_vlc[0], |
| 256 | TEX_VLC_BITS, 2, 0); |
| 257 | |
| 258 | if (level != 0) { |
| 259 | i += run; |
| 260 | check_scantable_index(s, i); |
| 261 | j = scantable[i]; |
| 262 | level = ((level * 2 + 1) * qscale * quant_matrix[j]) >> 5; |
| 263 | level = (level - 1) | 1; |
| 264 | level = (level ^ SHOW_SBITS(re, &s->gb, 1)) - |
| 265 | SHOW_SBITS(re, &s->gb, 1); |
| 266 | SKIP_BITS(re, &s->gb, 1); |
| 267 | } else { |
| 268 | /* escape */ |
| 269 | run = SHOW_UBITS(re, &s->gb, 6) + 1; |
| 270 | LAST_SKIP_BITS(re, &s->gb, 6); |
| 271 | UPDATE_CACHE(re, &s->gb); |
| 272 | level = SHOW_SBITS(re, &s->gb, 8); |
| 273 | SKIP_BITS(re, &s->gb, 8); |
| 274 | if (level == -128) { |
| 275 | level = SHOW_UBITS(re, &s->gb, 8) - 256; |
| 276 | SKIP_BITS(re, &s->gb, 8); |
| 277 | } else if (level == 0) { |
| 278 | level = SHOW_UBITS(re, &s->gb, 8); |
| 279 | SKIP_BITS(re, &s->gb, 8); |
| 280 | } |
| 281 | i += run; |
| 282 | check_scantable_index(s, i); |
| 283 | j = scantable[i]; |
| 284 | if (level < 0) { |
| 285 | level = -level; |
| 286 | level = ((level * 2 + 1) * qscale * quant_matrix[j]) >> 5; |
| 287 | level = (level - 1) | 1; |
| 288 | level = -level; |
| 289 | } else { |
| 290 | level = ((level * 2 + 1) * qscale * quant_matrix[j]) >> 5; |
| 291 | level = (level - 1) | 1; |
| 292 | } |
| 293 | } |
| 294 | |
| 295 | block[j] = level; |
| 296 | if (((int32_t) GET_CACHE(re, &s->gb)) <= (int32_t) 0xBFFFFFFF) |
| 297 | break; |
| 298 | UPDATE_CACHE(re, &s->gb); |
| 299 | } |
| 300 | end: |
| 301 | LAST_SKIP_BITS(re, &s->gb, 2); |
| 302 | CLOSE_READER(re, &s->gb); |
| 303 | } |
| 304 | s->block_last_index[n] = i; |
| 305 | return 0; |
| 306 | } |
| 307 | |
| 308 | /** |
| 309 | * Note: this function can read out of range and crash for corrupt streams. |
| 310 | * Changing this would eat up any speed benefits it has. |
| 311 | * Do not use "fast" flag if you need the code to be robust. |
| 312 | */ |
| 313 | static inline int mpeg1_fast_decode_block_inter(MpegEncContext *s, |
| 314 | int16_t *block, int n) |
| 315 | { |
| 316 | int level, i, j, run; |
| 317 | RLTable *rl = &ff_rl_mpeg1; |
| 318 | uint8_t *const scantable = s->intra_scantable.permutated; |
| 319 | const int qscale = s->qscale; |
| 320 | |
| 321 | { |
| 322 | OPEN_READER(re, &s->gb); |
| 323 | i = -1; |
| 324 | // Special case for first coefficient, no need to add second VLC table. |
| 325 | UPDATE_CACHE(re, &s->gb); |
| 326 | if (((int32_t) GET_CACHE(re, &s->gb)) < 0) { |
| 327 | level = (3 * qscale) >> 1; |
| 328 | level = (level - 1) | 1; |
| 329 | if (GET_CACHE(re, &s->gb) & 0x40000000) |
| 330 | level = -level; |
| 331 | block[0] = level; |
| 332 | i++; |
| 333 | SKIP_BITS(re, &s->gb, 2); |
| 334 | if (((int32_t) GET_CACHE(re, &s->gb)) <= (int32_t) 0xBFFFFFFF) |
| 335 | goto end; |
| 336 | } |
| 337 | |
| 338 | /* now quantify & encode AC coefficients */ |
| 339 | for (;;) { |
| 340 | GET_RL_VLC(level, run, re, &s->gb, rl->rl_vlc[0], |
| 341 | TEX_VLC_BITS, 2, 0); |
| 342 | |
| 343 | if (level != 0) { |
| 344 | i += run; |
| 345 | check_scantable_index(s, i); |
| 346 | j = scantable[i]; |
| 347 | level = ((level * 2 + 1) * qscale) >> 1; |
| 348 | level = (level - 1) | 1; |
| 349 | level = (level ^ SHOW_SBITS(re, &s->gb, 1)) - |
| 350 | SHOW_SBITS(re, &s->gb, 1); |
| 351 | SKIP_BITS(re, &s->gb, 1); |
| 352 | } else { |
| 353 | /* escape */ |
| 354 | run = SHOW_UBITS(re, &s->gb, 6) + 1; |
| 355 | LAST_SKIP_BITS(re, &s->gb, 6); |
| 356 | UPDATE_CACHE(re, &s->gb); |
| 357 | level = SHOW_SBITS(re, &s->gb, 8); |
| 358 | SKIP_BITS(re, &s->gb, 8); |
| 359 | if (level == -128) { |
| 360 | level = SHOW_UBITS(re, &s->gb, 8) - 256; |
| 361 | SKIP_BITS(re, &s->gb, 8); |
| 362 | } else if (level == 0) { |
| 363 | level = SHOW_UBITS(re, &s->gb, 8); |
| 364 | SKIP_BITS(re, &s->gb, 8); |
| 365 | } |
| 366 | i += run; |
| 367 | check_scantable_index(s, i); |
| 368 | j = scantable[i]; |
| 369 | if (level < 0) { |
| 370 | level = -level; |
| 371 | level = ((level * 2 + 1) * qscale) >> 1; |
| 372 | level = (level - 1) | 1; |
| 373 | level = -level; |
| 374 | } else { |
| 375 | level = ((level * 2 + 1) * qscale) >> 1; |
| 376 | level = (level - 1) | 1; |
| 377 | } |
| 378 | } |
| 379 | |
| 380 | block[j] = level; |
| 381 | if (((int32_t) GET_CACHE(re, &s->gb)) <= (int32_t) 0xBFFFFFFF) |
| 382 | break; |
| 383 | UPDATE_CACHE(re, &s->gb); |
| 384 | } |
| 385 | end: |
| 386 | LAST_SKIP_BITS(re, &s->gb, 2); |
| 387 | CLOSE_READER(re, &s->gb); |
| 388 | } |
| 389 | s->block_last_index[n] = i; |
| 390 | return 0; |
| 391 | } |
| 392 | |
| 393 | static inline int mpeg2_decode_block_non_intra(MpegEncContext *s, |
| 394 | int16_t *block, int n) |
| 395 | { |
| 396 | int level, i, j, run; |
| 397 | RLTable *rl = &ff_rl_mpeg1; |
| 398 | uint8_t *const scantable = s->intra_scantable.permutated; |
| 399 | const uint16_t *quant_matrix; |
| 400 | const int qscale = s->qscale; |
| 401 | int mismatch; |
| 402 | |
| 403 | mismatch = 1; |
| 404 | |
| 405 | { |
| 406 | OPEN_READER(re, &s->gb); |
| 407 | i = -1; |
| 408 | if (n < 4) |
| 409 | quant_matrix = s->inter_matrix; |
| 410 | else |
| 411 | quant_matrix = s->chroma_inter_matrix; |
| 412 | |
| 413 | // Special case for first coefficient, no need to add second VLC table. |
| 414 | UPDATE_CACHE(re, &s->gb); |
| 415 | if (((int32_t) GET_CACHE(re, &s->gb)) < 0) { |
| 416 | level = (3 * qscale * quant_matrix[0]) >> 5; |
| 417 | if (GET_CACHE(re, &s->gb) & 0x40000000) |
| 418 | level = -level; |
| 419 | block[0] = level; |
| 420 | mismatch ^= level; |
| 421 | i++; |
| 422 | SKIP_BITS(re, &s->gb, 2); |
| 423 | if (((int32_t) GET_CACHE(re, &s->gb)) <= (int32_t) 0xBFFFFFFF) |
| 424 | goto end; |
| 425 | } |
| 426 | |
| 427 | /* now quantify & encode AC coefficients */ |
| 428 | for (;;) { |
| 429 | GET_RL_VLC(level, run, re, &s->gb, rl->rl_vlc[0], |
| 430 | TEX_VLC_BITS, 2, 0); |
| 431 | |
| 432 | if (level != 0) { |
| 433 | i += run; |
| 434 | check_scantable_index(s, i); |
| 435 | j = scantable[i]; |
| 436 | level = ((level * 2 + 1) * qscale * quant_matrix[j]) >> 5; |
| 437 | level = (level ^ SHOW_SBITS(re, &s->gb, 1)) - |
| 438 | SHOW_SBITS(re, &s->gb, 1); |
| 439 | SKIP_BITS(re, &s->gb, 1); |
| 440 | } else { |
| 441 | /* escape */ |
| 442 | run = SHOW_UBITS(re, &s->gb, 6) + 1; |
| 443 | LAST_SKIP_BITS(re, &s->gb, 6); |
| 444 | UPDATE_CACHE(re, &s->gb); |
| 445 | level = SHOW_SBITS(re, &s->gb, 12); |
| 446 | SKIP_BITS(re, &s->gb, 12); |
| 447 | |
| 448 | i += run; |
| 449 | check_scantable_index(s, i); |
| 450 | j = scantable[i]; |
| 451 | if (level < 0) { |
| 452 | level = ((-level * 2 + 1) * qscale * quant_matrix[j]) >> 5; |
| 453 | level = -level; |
| 454 | } else { |
| 455 | level = ((level * 2 + 1) * qscale * quant_matrix[j]) >> 5; |
| 456 | } |
| 457 | } |
| 458 | |
| 459 | mismatch ^= level; |
| 460 | block[j] = level; |
| 461 | if (((int32_t) GET_CACHE(re, &s->gb)) <= (int32_t) 0xBFFFFFFF) |
| 462 | break; |
| 463 | UPDATE_CACHE(re, &s->gb); |
| 464 | } |
| 465 | end: |
| 466 | LAST_SKIP_BITS(re, &s->gb, 2); |
| 467 | CLOSE_READER(re, &s->gb); |
| 468 | } |
| 469 | block[63] ^= (mismatch & 1); |
| 470 | |
| 471 | s->block_last_index[n] = i; |
| 472 | return 0; |
| 473 | } |
| 474 | |
| 475 | /** |
| 476 | * Note: this function can read out of range and crash for corrupt streams. |
| 477 | * Changing this would eat up any speed benefits it has. |
| 478 | * Do not use "fast" flag if you need the code to be robust. |
| 479 | */ |
| 480 | static inline int mpeg2_fast_decode_block_non_intra(MpegEncContext *s, |
| 481 | int16_t *block, int n) |
| 482 | { |
| 483 | int level, i, j, run; |
| 484 | RLTable *rl = &ff_rl_mpeg1; |
| 485 | uint8_t *const scantable = s->intra_scantable.permutated; |
| 486 | const int qscale = s->qscale; |
| 487 | OPEN_READER(re, &s->gb); |
| 488 | i = -1; |
| 489 | |
| 490 | // special case for first coefficient, no need to add second VLC table |
| 491 | UPDATE_CACHE(re, &s->gb); |
| 492 | if (((int32_t) GET_CACHE(re, &s->gb)) < 0) { |
| 493 | level = (3 * qscale) >> 1; |
| 494 | if (GET_CACHE(re, &s->gb) & 0x40000000) |
| 495 | level = -level; |
| 496 | block[0] = level; |
| 497 | i++; |
| 498 | SKIP_BITS(re, &s->gb, 2); |
| 499 | if (((int32_t) GET_CACHE(re, &s->gb)) <= (int32_t) 0xBFFFFFFF) |
| 500 | goto end; |
| 501 | } |
| 502 | |
| 503 | /* now quantify & encode AC coefficients */ |
| 504 | for (;;) { |
| 505 | GET_RL_VLC(level, run, re, &s->gb, rl->rl_vlc[0], TEX_VLC_BITS, 2, 0); |
| 506 | |
| 507 | if (level != 0) { |
| 508 | i += run; |
| 509 | j = scantable[i]; |
| 510 | level = ((level * 2 + 1) * qscale) >> 1; |
| 511 | level = (level ^ SHOW_SBITS(re, &s->gb, 1)) - |
| 512 | SHOW_SBITS(re, &s->gb, 1); |
| 513 | SKIP_BITS(re, &s->gb, 1); |
| 514 | } else { |
| 515 | /* escape */ |
| 516 | run = SHOW_UBITS(re, &s->gb, 6) + 1; |
| 517 | LAST_SKIP_BITS(re, &s->gb, 6); |
| 518 | UPDATE_CACHE(re, &s->gb); |
| 519 | level = SHOW_SBITS(re, &s->gb, 12); |
| 520 | SKIP_BITS(re, &s->gb, 12); |
| 521 | |
| 522 | i += run; |
| 523 | j = scantable[i]; |
| 524 | if (level < 0) { |
| 525 | level = ((-level * 2 + 1) * qscale) >> 1; |
| 526 | level = -level; |
| 527 | } else { |
| 528 | level = ((level * 2 + 1) * qscale) >> 1; |
| 529 | } |
| 530 | } |
| 531 | |
| 532 | block[j] = level; |
| 533 | if (((int32_t) GET_CACHE(re, &s->gb)) <= (int32_t) 0xBFFFFFFF || i > 63) |
| 534 | break; |
| 535 | |
| 536 | UPDATE_CACHE(re, &s->gb); |
| 537 | } |
| 538 | end: |
| 539 | LAST_SKIP_BITS(re, &s->gb, 2); |
| 540 | CLOSE_READER(re, &s->gb); |
| 541 | s->block_last_index[n] = i; |
| 542 | return 0; |
| 543 | } |
| 544 | |
| 545 | static inline int mpeg2_decode_block_intra(MpegEncContext *s, |
| 546 | int16_t *block, int n) |
| 547 | { |
| 548 | int level, dc, diff, i, j, run; |
| 549 | int component; |
| 550 | RLTable *rl; |
| 551 | uint8_t *const scantable = s->intra_scantable.permutated; |
| 552 | const uint16_t *quant_matrix; |
| 553 | const int qscale = s->qscale; |
| 554 | int mismatch; |
| 555 | |
| 556 | /* DC coefficient */ |
| 557 | if (n < 4) { |
| 558 | quant_matrix = s->intra_matrix; |
| 559 | component = 0; |
| 560 | } else { |
| 561 | quant_matrix = s->chroma_intra_matrix; |
| 562 | component = (n & 1) + 1; |
| 563 | } |
| 564 | diff = decode_dc(&s->gb, component); |
| 565 | if (diff >= 0xffff) |
| 566 | return -1; |
| 567 | dc = s->last_dc[component]; |
| 568 | dc += diff; |
| 569 | s->last_dc[component] = dc; |
| 570 | block[0] = dc << (3 - s->intra_dc_precision); |
| 571 | av_dlog(s->avctx, "dc=%d\n", block[0]); |
| 572 | mismatch = block[0] ^ 1; |
| 573 | i = 0; |
| 574 | if (s->intra_vlc_format) |
| 575 | rl = &ff_rl_mpeg2; |
| 576 | else |
| 577 | rl = &ff_rl_mpeg1; |
| 578 | |
| 579 | { |
| 580 | OPEN_READER(re, &s->gb); |
| 581 | /* now quantify & encode AC coefficients */ |
| 582 | for (;;) { |
| 583 | UPDATE_CACHE(re, &s->gb); |
| 584 | GET_RL_VLC(level, run, re, &s->gb, rl->rl_vlc[0], |
| 585 | TEX_VLC_BITS, 2, 0); |
| 586 | |
| 587 | if (level == 127) { |
| 588 | break; |
| 589 | } else if (level != 0) { |
| 590 | i += run; |
| 591 | check_scantable_index(s, i); |
| 592 | j = scantable[i]; |
| 593 | level = (level * qscale * quant_matrix[j]) >> 4; |
| 594 | level = (level ^ SHOW_SBITS(re, &s->gb, 1)) - |
| 595 | SHOW_SBITS(re, &s->gb, 1); |
| 596 | LAST_SKIP_BITS(re, &s->gb, 1); |
| 597 | } else { |
| 598 | /* escape */ |
| 599 | run = SHOW_UBITS(re, &s->gb, 6) + 1; |
| 600 | LAST_SKIP_BITS(re, &s->gb, 6); |
| 601 | UPDATE_CACHE(re, &s->gb); |
| 602 | level = SHOW_SBITS(re, &s->gb, 12); |
| 603 | SKIP_BITS(re, &s->gb, 12); |
| 604 | i += run; |
| 605 | check_scantable_index(s, i); |
| 606 | j = scantable[i]; |
| 607 | if (level < 0) { |
| 608 | level = (-level * qscale * quant_matrix[j]) >> 4; |
| 609 | level = -level; |
| 610 | } else { |
| 611 | level = (level * qscale * quant_matrix[j]) >> 4; |
| 612 | } |
| 613 | } |
| 614 | |
| 615 | mismatch ^= level; |
| 616 | block[j] = level; |
| 617 | } |
| 618 | CLOSE_READER(re, &s->gb); |
| 619 | } |
| 620 | block[63] ^= mismatch & 1; |
| 621 | |
| 622 | s->block_last_index[n] = i; |
| 623 | return 0; |
| 624 | } |
| 625 | |
| 626 | /** |
| 627 | * Note: this function can read out of range and crash for corrupt streams. |
| 628 | * Changing this would eat up any speed benefits it has. |
| 629 | * Do not use "fast" flag if you need the code to be robust. |
| 630 | */ |
| 631 | static inline int mpeg2_fast_decode_block_intra(MpegEncContext *s, |
| 632 | int16_t *block, int n) |
| 633 | { |
| 634 | int level, dc, diff, i, j, run; |
| 635 | int component; |
| 636 | RLTable *rl; |
| 637 | uint8_t *const scantable = s->intra_scantable.permutated; |
| 638 | const uint16_t *quant_matrix; |
| 639 | const int qscale = s->qscale; |
| 640 | |
| 641 | /* DC coefficient */ |
| 642 | if (n < 4) { |
| 643 | quant_matrix = s->intra_matrix; |
| 644 | component = 0; |
| 645 | } else { |
| 646 | quant_matrix = s->chroma_intra_matrix; |
| 647 | component = (n & 1) + 1; |
| 648 | } |
| 649 | diff = decode_dc(&s->gb, component); |
| 650 | if (diff >= 0xffff) |
| 651 | return -1; |
| 652 | dc = s->last_dc[component]; |
| 653 | dc += diff; |
| 654 | s->last_dc[component] = dc; |
| 655 | block[0] = dc << (3 - s->intra_dc_precision); |
| 656 | i = 0; |
| 657 | if (s->intra_vlc_format) |
| 658 | rl = &ff_rl_mpeg2; |
| 659 | else |
| 660 | rl = &ff_rl_mpeg1; |
| 661 | |
| 662 | { |
| 663 | OPEN_READER(re, &s->gb); |
| 664 | /* now quantify & encode AC coefficients */ |
| 665 | for (;;) { |
| 666 | UPDATE_CACHE(re, &s->gb); |
| 667 | GET_RL_VLC(level, run, re, &s->gb, rl->rl_vlc[0], |
| 668 | TEX_VLC_BITS, 2, 0); |
| 669 | |
| 670 | if (level >= 64 || i > 63) { |
| 671 | break; |
| 672 | } else if (level != 0) { |
| 673 | i += run; |
| 674 | j = scantable[i]; |
| 675 | level = (level * qscale * quant_matrix[j]) >> 4; |
| 676 | level = (level ^ SHOW_SBITS(re, &s->gb, 1)) - |
| 677 | SHOW_SBITS(re, &s->gb, 1); |
| 678 | LAST_SKIP_BITS(re, &s->gb, 1); |
| 679 | } else { |
| 680 | /* escape */ |
| 681 | run = SHOW_UBITS(re, &s->gb, 6) + 1; |
| 682 | LAST_SKIP_BITS(re, &s->gb, 6); |
| 683 | UPDATE_CACHE(re, &s->gb); |
| 684 | level = SHOW_SBITS(re, &s->gb, 12); |
| 685 | SKIP_BITS(re, &s->gb, 12); |
| 686 | i += run; |
| 687 | j = scantable[i]; |
| 688 | if (level < 0) { |
| 689 | level = (-level * qscale * quant_matrix[j]) >> 4; |
| 690 | level = -level; |
| 691 | } else { |
| 692 | level = (level * qscale * quant_matrix[j]) >> 4; |
| 693 | } |
| 694 | } |
| 695 | |
| 696 | block[j] = level; |
| 697 | } |
| 698 | CLOSE_READER(re, &s->gb); |
| 699 | } |
| 700 | |
| 701 | s->block_last_index[n] = i; |
| 702 | return 0; |
| 703 | } |
| 704 | |
| 705 | /******************************************/ |
| 706 | /* decoding */ |
| 707 | |
| 708 | static inline int get_dmv(MpegEncContext *s) |
| 709 | { |
| 710 | if (get_bits1(&s->gb)) |
| 711 | return 1 - (get_bits1(&s->gb) << 1); |
| 712 | else |
| 713 | return 0; |
| 714 | } |
| 715 | |
| 716 | static inline int get_qscale(MpegEncContext *s) |
| 717 | { |
| 718 | int qscale = get_bits(&s->gb, 5); |
| 719 | if (s->q_scale_type) |
| 720 | return non_linear_qscale[qscale]; |
| 721 | else |
| 722 | return qscale << 1; |
| 723 | } |
| 724 | |
| 725 | |
| 726 | /* motion type (for MPEG-2) */ |
| 727 | #define MT_FIELD 1 |
| 728 | #define MT_FRAME 2 |
| 729 | #define MT_16X8 2 |
| 730 | #define MT_DMV 3 |
| 731 | |
| 732 | static int mpeg_decode_mb(MpegEncContext *s, int16_t block[12][64]) |
| 733 | { |
| 734 | int i, j, k, cbp, val, mb_type, motion_type; |
| 735 | const int mb_block_count = 4 + (1 << s->chroma_format); |
| 736 | |
| 737 | av_dlog(s->avctx, "decode_mb: x=%d y=%d\n", s->mb_x, s->mb_y); |
| 738 | |
| 739 | av_assert2(s->mb_skipped == 0); |
| 740 | |
| 741 | if (s->mb_skip_run-- != 0) { |
| 742 | if (s->pict_type == AV_PICTURE_TYPE_P) { |
| 743 | s->mb_skipped = 1; |
| 744 | s->current_picture.mb_type[s->mb_x + s->mb_y * s->mb_stride] = |
| 745 | MB_TYPE_SKIP | MB_TYPE_L0 | MB_TYPE_16x16; |
| 746 | } else { |
| 747 | int mb_type; |
| 748 | |
| 749 | if (s->mb_x) |
| 750 | mb_type = s->current_picture.mb_type[s->mb_x + s->mb_y * s->mb_stride - 1]; |
| 751 | else |
| 752 | // FIXME not sure if this is allowed in MPEG at all |
| 753 | mb_type = s->current_picture.mb_type[s->mb_width + (s->mb_y - 1) * s->mb_stride - 1]; |
| 754 | if (IS_INTRA(mb_type)) { |
| 755 | av_log(s->avctx, AV_LOG_ERROR, "skip with previntra\n"); |
| 756 | return -1; |
| 757 | } |
| 758 | s->current_picture.mb_type[s->mb_x + s->mb_y * s->mb_stride] = |
| 759 | mb_type | MB_TYPE_SKIP; |
| 760 | |
| 761 | if ((s->mv[0][0][0] | s->mv[0][0][1] | s->mv[1][0][0] | s->mv[1][0][1]) == 0) |
| 762 | s->mb_skipped = 1; |
| 763 | } |
| 764 | |
| 765 | return 0; |
| 766 | } |
| 767 | |
| 768 | switch (s->pict_type) { |
| 769 | default: |
| 770 | case AV_PICTURE_TYPE_I: |
| 771 | if (get_bits1(&s->gb) == 0) { |
| 772 | if (get_bits1(&s->gb) == 0) { |
| 773 | av_log(s->avctx, AV_LOG_ERROR, |
| 774 | "invalid mb type in I Frame at %d %d\n", |
| 775 | s->mb_x, s->mb_y); |
| 776 | return -1; |
| 777 | } |
| 778 | mb_type = MB_TYPE_QUANT | MB_TYPE_INTRA; |
| 779 | } else { |
| 780 | mb_type = MB_TYPE_INTRA; |
| 781 | } |
| 782 | break; |
| 783 | case AV_PICTURE_TYPE_P: |
| 784 | mb_type = get_vlc2(&s->gb, ff_mb_ptype_vlc.table, MB_PTYPE_VLC_BITS, 1); |
| 785 | if (mb_type < 0) { |
| 786 | av_log(s->avctx, AV_LOG_ERROR, |
| 787 | "invalid mb type in P Frame at %d %d\n", s->mb_x, s->mb_y); |
| 788 | return -1; |
| 789 | } |
| 790 | mb_type = ptype2mb_type[mb_type]; |
| 791 | break; |
| 792 | case AV_PICTURE_TYPE_B: |
| 793 | mb_type = get_vlc2(&s->gb, ff_mb_btype_vlc.table, MB_BTYPE_VLC_BITS, 1); |
| 794 | if (mb_type < 0) { |
| 795 | av_log(s->avctx, AV_LOG_ERROR, |
| 796 | "invalid mb type in B Frame at %d %d\n", s->mb_x, s->mb_y); |
| 797 | return -1; |
| 798 | } |
| 799 | mb_type = btype2mb_type[mb_type]; |
| 800 | break; |
| 801 | } |
| 802 | av_dlog(s->avctx, "mb_type=%x\n", mb_type); |
| 803 | // motion_type = 0; /* avoid warning */ |
| 804 | if (IS_INTRA(mb_type)) { |
| 805 | s->bdsp.clear_blocks(s->block[0]); |
| 806 | |
| 807 | if (!s->chroma_y_shift) |
| 808 | s->bdsp.clear_blocks(s->block[6]); |
| 809 | |
| 810 | /* compute DCT type */ |
| 811 | // FIXME: add an interlaced_dct coded var? |
| 812 | if (s->picture_structure == PICT_FRAME && |
| 813 | !s->frame_pred_frame_dct) |
| 814 | s->interlaced_dct = get_bits1(&s->gb); |
| 815 | |
| 816 | if (IS_QUANT(mb_type)) |
| 817 | s->qscale = get_qscale(s); |
| 818 | |
| 819 | if (s->concealment_motion_vectors) { |
| 820 | /* just parse them */ |
| 821 | if (s->picture_structure != PICT_FRAME) |
| 822 | skip_bits1(&s->gb); /* field select */ |
| 823 | |
| 824 | s->mv[0][0][0] = |
| 825 | s->last_mv[0][0][0] = |
| 826 | s->last_mv[0][1][0] = mpeg_decode_motion(s, s->mpeg_f_code[0][0], |
| 827 | s->last_mv[0][0][0]); |
| 828 | s->mv[0][0][1] = |
| 829 | s->last_mv[0][0][1] = |
| 830 | s->last_mv[0][1][1] = mpeg_decode_motion(s, s->mpeg_f_code[0][1], |
| 831 | s->last_mv[0][0][1]); |
| 832 | |
| 833 | skip_bits1(&s->gb); /* marker */ |
| 834 | } else { |
| 835 | /* reset mv prediction */ |
| 836 | memset(s->last_mv, 0, sizeof(s->last_mv)); |
| 837 | } |
| 838 | s->mb_intra = 1; |
| 839 | // if 1, we memcpy blocks in xvmcvideo |
| 840 | if ((CONFIG_MPEG1_XVMC_HWACCEL || CONFIG_MPEG2_XVMC_HWACCEL) && s->pack_pblocks) |
| 841 | ff_xvmc_pack_pblocks(s, -1); // inter are always full blocks |
| 842 | |
| 843 | if (s->codec_id == AV_CODEC_ID_MPEG2VIDEO) { |
| 844 | if (s->flags2 & CODEC_FLAG2_FAST) { |
| 845 | for (i = 0; i < 6; i++) |
| 846 | mpeg2_fast_decode_block_intra(s, *s->pblocks[i], i); |
| 847 | } else { |
| 848 | for (i = 0; i < mb_block_count; i++) |
| 849 | if (mpeg2_decode_block_intra(s, *s->pblocks[i], i) < 0) |
| 850 | return -1; |
| 851 | } |
| 852 | } else { |
| 853 | for (i = 0; i < 6; i++) |
| 854 | if (mpeg1_decode_block_intra(s, *s->pblocks[i], i) < 0) |
| 855 | return -1; |
| 856 | } |
| 857 | } else { |
| 858 | if (mb_type & MB_TYPE_ZERO_MV) { |
| 859 | av_assert2(mb_type & MB_TYPE_CBP); |
| 860 | |
| 861 | s->mv_dir = MV_DIR_FORWARD; |
| 862 | if (s->picture_structure == PICT_FRAME) { |
| 863 | if (s->picture_structure == PICT_FRAME |
| 864 | && !s->frame_pred_frame_dct) |
| 865 | s->interlaced_dct = get_bits1(&s->gb); |
| 866 | s->mv_type = MV_TYPE_16X16; |
| 867 | } else { |
| 868 | s->mv_type = MV_TYPE_FIELD; |
| 869 | mb_type |= MB_TYPE_INTERLACED; |
| 870 | s->field_select[0][0] = s->picture_structure - 1; |
| 871 | } |
| 872 | |
| 873 | if (IS_QUANT(mb_type)) |
| 874 | s->qscale = get_qscale(s); |
| 875 | |
| 876 | s->last_mv[0][0][0] = 0; |
| 877 | s->last_mv[0][0][1] = 0; |
| 878 | s->last_mv[0][1][0] = 0; |
| 879 | s->last_mv[0][1][1] = 0; |
| 880 | s->mv[0][0][0] = 0; |
| 881 | s->mv[0][0][1] = 0; |
| 882 | } else { |
| 883 | av_assert2(mb_type & MB_TYPE_L0L1); |
| 884 | // FIXME decide if MBs in field pictures are MB_TYPE_INTERLACED |
| 885 | /* get additional motion vector type */ |
| 886 | if (s->picture_structure == PICT_FRAME && s->frame_pred_frame_dct) { |
| 887 | motion_type = MT_FRAME; |
| 888 | } else { |
| 889 | motion_type = get_bits(&s->gb, 2); |
| 890 | if (s->picture_structure == PICT_FRAME && HAS_CBP(mb_type)) |
| 891 | s->interlaced_dct = get_bits1(&s->gb); |
| 892 | } |
| 893 | |
| 894 | if (IS_QUANT(mb_type)) |
| 895 | s->qscale = get_qscale(s); |
| 896 | |
| 897 | /* motion vectors */ |
| 898 | s->mv_dir = (mb_type >> 13) & 3; |
| 899 | av_dlog(s->avctx, "motion_type=%d\n", motion_type); |
| 900 | switch (motion_type) { |
| 901 | case MT_FRAME: /* or MT_16X8 */ |
| 902 | if (s->picture_structure == PICT_FRAME) { |
| 903 | mb_type |= MB_TYPE_16x16; |
| 904 | s->mv_type = MV_TYPE_16X16; |
| 905 | for (i = 0; i < 2; i++) { |
| 906 | if (USES_LIST(mb_type, i)) { |
| 907 | /* MT_FRAME */ |
| 908 | s->mv[i][0][0] = |
| 909 | s->last_mv[i][0][0] = |
| 910 | s->last_mv[i][1][0] = |
| 911 | mpeg_decode_motion(s, s->mpeg_f_code[i][0], |
| 912 | s->last_mv[i][0][0]); |
| 913 | s->mv[i][0][1] = |
| 914 | s->last_mv[i][0][1] = |
| 915 | s->last_mv[i][1][1] = |
| 916 | mpeg_decode_motion(s, s->mpeg_f_code[i][1], |
| 917 | s->last_mv[i][0][1]); |
| 918 | /* full_pel: only for MPEG-1 */ |
| 919 | if (s->full_pel[i]) { |
| 920 | s->mv[i][0][0] <<= 1; |
| 921 | s->mv[i][0][1] <<= 1; |
| 922 | } |
| 923 | } |
| 924 | } |
| 925 | } else { |
| 926 | mb_type |= MB_TYPE_16x8 | MB_TYPE_INTERLACED; |
| 927 | s->mv_type = MV_TYPE_16X8; |
| 928 | for (i = 0; i < 2; i++) { |
| 929 | if (USES_LIST(mb_type, i)) { |
| 930 | /* MT_16X8 */ |
| 931 | for (j = 0; j < 2; j++) { |
| 932 | s->field_select[i][j] = get_bits1(&s->gb); |
| 933 | for (k = 0; k < 2; k++) { |
| 934 | val = mpeg_decode_motion(s, s->mpeg_f_code[i][k], |
| 935 | s->last_mv[i][j][k]); |
| 936 | s->last_mv[i][j][k] = val; |
| 937 | s->mv[i][j][k] = val; |
| 938 | } |
| 939 | } |
| 940 | } |
| 941 | } |
| 942 | } |
| 943 | break; |
| 944 | case MT_FIELD: |
| 945 | s->mv_type = MV_TYPE_FIELD; |
| 946 | if (s->picture_structure == PICT_FRAME) { |
| 947 | mb_type |= MB_TYPE_16x8 | MB_TYPE_INTERLACED; |
| 948 | for (i = 0; i < 2; i++) { |
| 949 | if (USES_LIST(mb_type, i)) { |
| 950 | for (j = 0; j < 2; j++) { |
| 951 | s->field_select[i][j] = get_bits1(&s->gb); |
| 952 | val = mpeg_decode_motion(s, s->mpeg_f_code[i][0], |
| 953 | s->last_mv[i][j][0]); |
| 954 | s->last_mv[i][j][0] = val; |
| 955 | s->mv[i][j][0] = val; |
| 956 | av_dlog(s->avctx, "fmx=%d\n", val); |
| 957 | val = mpeg_decode_motion(s, s->mpeg_f_code[i][1], |
| 958 | s->last_mv[i][j][1] >> 1); |
| 959 | s->last_mv[i][j][1] = val << 1; |
| 960 | s->mv[i][j][1] = val; |
| 961 | av_dlog(s->avctx, "fmy=%d\n", val); |
| 962 | } |
| 963 | } |
| 964 | } |
| 965 | } else { |
| 966 | av_assert0(!s->progressive_sequence); |
| 967 | mb_type |= MB_TYPE_16x16 | MB_TYPE_INTERLACED; |
| 968 | for (i = 0; i < 2; i++) { |
| 969 | if (USES_LIST(mb_type, i)) { |
| 970 | s->field_select[i][0] = get_bits1(&s->gb); |
| 971 | for (k = 0; k < 2; k++) { |
| 972 | val = mpeg_decode_motion(s, s->mpeg_f_code[i][k], |
| 973 | s->last_mv[i][0][k]); |
| 974 | s->last_mv[i][0][k] = val; |
| 975 | s->last_mv[i][1][k] = val; |
| 976 | s->mv[i][0][k] = val; |
| 977 | } |
| 978 | } |
| 979 | } |
| 980 | } |
| 981 | break; |
| 982 | case MT_DMV: |
| 983 | if (s->progressive_sequence){ |
| 984 | av_log(s->avctx, AV_LOG_ERROR, "MT_DMV in progressive_sequence\n"); |
| 985 | return -1; |
| 986 | } |
| 987 | s->mv_type = MV_TYPE_DMV; |
| 988 | for (i = 0; i < 2; i++) { |
| 989 | if (USES_LIST(mb_type, i)) { |
| 990 | int dmx, dmy, mx, my, m; |
| 991 | const int my_shift = s->picture_structure == PICT_FRAME; |
| 992 | |
| 993 | mx = mpeg_decode_motion(s, s->mpeg_f_code[i][0], |
| 994 | s->last_mv[i][0][0]); |
| 995 | s->last_mv[i][0][0] = mx; |
| 996 | s->last_mv[i][1][0] = mx; |
| 997 | dmx = get_dmv(s); |
| 998 | my = mpeg_decode_motion(s, s->mpeg_f_code[i][1], |
| 999 | s->last_mv[i][0][1] >> my_shift); |
| 1000 | dmy = get_dmv(s); |
| 1001 | |
| 1002 | |
| 1003 | s->last_mv[i][0][1] = my << my_shift; |
| 1004 | s->last_mv[i][1][1] = my << my_shift; |
| 1005 | |
| 1006 | s->mv[i][0][0] = mx; |
| 1007 | s->mv[i][0][1] = my; |
| 1008 | s->mv[i][1][0] = mx; // not used |
| 1009 | s->mv[i][1][1] = my; // not used |
| 1010 | |
| 1011 | if (s->picture_structure == PICT_FRAME) { |
| 1012 | mb_type |= MB_TYPE_16x16 | MB_TYPE_INTERLACED; |
| 1013 | |
| 1014 | // m = 1 + 2 * s->top_field_first; |
| 1015 | m = s->top_field_first ? 1 : 3; |
| 1016 | |
| 1017 | /* top -> top pred */ |
| 1018 | s->mv[i][2][0] = ((mx * m + (mx > 0)) >> 1) + dmx; |
| 1019 | s->mv[i][2][1] = ((my * m + (my > 0)) >> 1) + dmy - 1; |
| 1020 | m = 4 - m; |
| 1021 | s->mv[i][3][0] = ((mx * m + (mx > 0)) >> 1) + dmx; |
| 1022 | s->mv[i][3][1] = ((my * m + (my > 0)) >> 1) + dmy + 1; |
| 1023 | } else { |
| 1024 | mb_type |= MB_TYPE_16x16; |
| 1025 | |
| 1026 | s->mv[i][2][0] = ((mx + (mx > 0)) >> 1) + dmx; |
| 1027 | s->mv[i][2][1] = ((my + (my > 0)) >> 1) + dmy; |
| 1028 | if (s->picture_structure == PICT_TOP_FIELD) |
| 1029 | s->mv[i][2][1]--; |
| 1030 | else |
| 1031 | s->mv[i][2][1]++; |
| 1032 | } |
| 1033 | } |
| 1034 | } |
| 1035 | break; |
| 1036 | default: |
| 1037 | av_log(s->avctx, AV_LOG_ERROR, |
| 1038 | "00 motion_type at %d %d\n", s->mb_x, s->mb_y); |
| 1039 | return -1; |
| 1040 | } |
| 1041 | } |
| 1042 | |
| 1043 | s->mb_intra = 0; |
| 1044 | if (HAS_CBP(mb_type)) { |
| 1045 | s->bdsp.clear_blocks(s->block[0]); |
| 1046 | |
| 1047 | cbp = get_vlc2(&s->gb, ff_mb_pat_vlc.table, MB_PAT_VLC_BITS, 1); |
| 1048 | if (mb_block_count > 6) { |
| 1049 | cbp <<= mb_block_count - 6; |
| 1050 | cbp |= get_bits(&s->gb, mb_block_count - 6); |
| 1051 | s->bdsp.clear_blocks(s->block[6]); |
| 1052 | } |
| 1053 | if (cbp <= 0) { |
| 1054 | av_log(s->avctx, AV_LOG_ERROR, |
| 1055 | "invalid cbp %d at %d %d\n", cbp, s->mb_x, s->mb_y); |
| 1056 | return -1; |
| 1057 | } |
| 1058 | |
| 1059 | // if 1, we memcpy blocks in xvmcvideo |
| 1060 | if ((CONFIG_MPEG1_XVMC_HWACCEL || CONFIG_MPEG2_XVMC_HWACCEL) && s->pack_pblocks) |
| 1061 | ff_xvmc_pack_pblocks(s, cbp); |
| 1062 | |
| 1063 | if (s->codec_id == AV_CODEC_ID_MPEG2VIDEO) { |
| 1064 | if (s->flags2 & CODEC_FLAG2_FAST) { |
| 1065 | for (i = 0; i < 6; i++) { |
| 1066 | if (cbp & 32) |
| 1067 | mpeg2_fast_decode_block_non_intra(s, *s->pblocks[i], i); |
| 1068 | else |
| 1069 | s->block_last_index[i] = -1; |
| 1070 | cbp += cbp; |
| 1071 | } |
| 1072 | } else { |
| 1073 | cbp <<= 12 - mb_block_count; |
| 1074 | |
| 1075 | for (i = 0; i < mb_block_count; i++) { |
| 1076 | if (cbp & (1 << 11)) { |
| 1077 | if (mpeg2_decode_block_non_intra(s, *s->pblocks[i], i) < 0) |
| 1078 | return -1; |
| 1079 | } else { |
| 1080 | s->block_last_index[i] = -1; |
| 1081 | } |
| 1082 | cbp += cbp; |
| 1083 | } |
| 1084 | } |
| 1085 | } else { |
| 1086 | if (s->flags2 & CODEC_FLAG2_FAST) { |
| 1087 | for (i = 0; i < 6; i++) { |
| 1088 | if (cbp & 32) |
| 1089 | mpeg1_fast_decode_block_inter(s, *s->pblocks[i], i); |
| 1090 | else |
| 1091 | s->block_last_index[i] = -1; |
| 1092 | cbp += cbp; |
| 1093 | } |
| 1094 | } else { |
| 1095 | for (i = 0; i < 6; i++) { |
| 1096 | if (cbp & 32) { |
| 1097 | if (mpeg1_decode_block_inter(s, *s->pblocks[i], i) < 0) |
| 1098 | return -1; |
| 1099 | } else { |
| 1100 | s->block_last_index[i] = -1; |
| 1101 | } |
| 1102 | cbp += cbp; |
| 1103 | } |
| 1104 | } |
| 1105 | } |
| 1106 | } else { |
| 1107 | for (i = 0; i < 12; i++) |
| 1108 | s->block_last_index[i] = -1; |
| 1109 | } |
| 1110 | } |
| 1111 | |
| 1112 | s->current_picture.mb_type[s->mb_x + s->mb_y * s->mb_stride] = mb_type; |
| 1113 | |
| 1114 | return 0; |
| 1115 | } |
| 1116 | |
| 1117 | static av_cold int mpeg_decode_init(AVCodecContext *avctx) |
| 1118 | { |
| 1119 | Mpeg1Context *s = avctx->priv_data; |
| 1120 | MpegEncContext *s2 = &s->mpeg_enc_ctx; |
| 1121 | |
| 1122 | ff_mpv_decode_defaults(s2); |
| 1123 | ff_mpv_decode_init(s2, avctx); |
| 1124 | |
| 1125 | s->mpeg_enc_ctx.avctx = avctx; |
| 1126 | |
| 1127 | /* we need some permutation to store matrices, |
| 1128 | * until the decoder sets the real permutation. */ |
| 1129 | ff_mpv_idct_init(s2); |
| 1130 | ff_mpeg12_common_init(&s->mpeg_enc_ctx); |
| 1131 | ff_mpeg12_init_vlcs(); |
| 1132 | |
| 1133 | s->mpeg_enc_ctx_allocated = 0; |
| 1134 | s->mpeg_enc_ctx.picture_number = 0; |
| 1135 | s->repeat_field = 0; |
| 1136 | s->mpeg_enc_ctx.codec_id = avctx->codec->id; |
| 1137 | avctx->color_range = AVCOL_RANGE_MPEG; |
| 1138 | if (avctx->codec->id == AV_CODEC_ID_MPEG1VIDEO) |
| 1139 | avctx->chroma_sample_location = AVCHROMA_LOC_CENTER; |
| 1140 | else |
| 1141 | avctx->chroma_sample_location = AVCHROMA_LOC_LEFT; |
| 1142 | return 0; |
| 1143 | } |
| 1144 | |
| 1145 | static int mpeg_decode_update_thread_context(AVCodecContext *avctx, |
| 1146 | const AVCodecContext *avctx_from) |
| 1147 | { |
| 1148 | Mpeg1Context *ctx = avctx->priv_data, *ctx_from = avctx_from->priv_data; |
| 1149 | MpegEncContext *s = &ctx->mpeg_enc_ctx, *s1 = &ctx_from->mpeg_enc_ctx; |
| 1150 | int err; |
| 1151 | |
| 1152 | if (avctx == avctx_from || |
| 1153 | !ctx_from->mpeg_enc_ctx_allocated || |
| 1154 | !s1->context_initialized) |
| 1155 | return 0; |
| 1156 | |
| 1157 | err = ff_mpeg_update_thread_context(avctx, avctx_from); |
| 1158 | if (err) |
| 1159 | return err; |
| 1160 | |
| 1161 | if (!ctx->mpeg_enc_ctx_allocated) |
| 1162 | memcpy(s + 1, s1 + 1, sizeof(Mpeg1Context) - sizeof(MpegEncContext)); |
| 1163 | |
| 1164 | if (!(s->pict_type == AV_PICTURE_TYPE_B || s->low_delay)) |
| 1165 | s->picture_number++; |
| 1166 | |
| 1167 | return 0; |
| 1168 | } |
| 1169 | |
| 1170 | static void quant_matrix_rebuild(uint16_t *matrix, const uint8_t *old_perm, |
| 1171 | const uint8_t *new_perm) |
| 1172 | { |
| 1173 | uint16_t temp_matrix[64]; |
| 1174 | int i; |
| 1175 | |
| 1176 | memcpy(temp_matrix, matrix, 64 * sizeof(uint16_t)); |
| 1177 | |
| 1178 | for (i = 0; i < 64; i++) |
| 1179 | matrix[new_perm[i]] = temp_matrix[old_perm[i]]; |
| 1180 | } |
| 1181 | |
| 1182 | static const enum AVPixelFormat mpeg1_hwaccel_pixfmt_list_420[] = { |
| 1183 | #if CONFIG_MPEG1_XVMC_HWACCEL |
| 1184 | AV_PIX_FMT_XVMC, |
| 1185 | #endif |
| 1186 | #if CONFIG_MPEG1_VDPAU_HWACCEL |
| 1187 | AV_PIX_FMT_VDPAU_MPEG1, |
| 1188 | AV_PIX_FMT_VDPAU, |
| 1189 | #endif |
| 1190 | AV_PIX_FMT_YUV420P, |
| 1191 | AV_PIX_FMT_NONE |
| 1192 | }; |
| 1193 | |
| 1194 | static const enum AVPixelFormat mpeg2_hwaccel_pixfmt_list_420[] = { |
| 1195 | #if CONFIG_MPEG2_XVMC_HWACCEL |
| 1196 | AV_PIX_FMT_XVMC, |
| 1197 | #endif |
| 1198 | #if CONFIG_MPEG2_VDPAU_HWACCEL |
| 1199 | AV_PIX_FMT_VDPAU_MPEG2, |
| 1200 | AV_PIX_FMT_VDPAU, |
| 1201 | #endif |
| 1202 | #if CONFIG_MPEG2_DXVA2_HWACCEL |
| 1203 | AV_PIX_FMT_DXVA2_VLD, |
| 1204 | #endif |
| 1205 | #if CONFIG_MPEG2_VAAPI_HWACCEL |
| 1206 | AV_PIX_FMT_VAAPI_VLD, |
| 1207 | #endif |
| 1208 | AV_PIX_FMT_YUV420P, |
| 1209 | AV_PIX_FMT_NONE |
| 1210 | }; |
| 1211 | |
| 1212 | static const enum AVPixelFormat mpeg12_pixfmt_list_422[] = { |
| 1213 | AV_PIX_FMT_YUV422P, |
| 1214 | AV_PIX_FMT_NONE |
| 1215 | }; |
| 1216 | |
| 1217 | static const enum AVPixelFormat mpeg12_pixfmt_list_444[] = { |
| 1218 | AV_PIX_FMT_YUV444P, |
| 1219 | AV_PIX_FMT_NONE |
| 1220 | }; |
| 1221 | |
| 1222 | static inline int uses_vdpau(AVCodecContext *avctx) { |
| 1223 | return avctx->pix_fmt == AV_PIX_FMT_VDPAU_MPEG1 || avctx->pix_fmt == AV_PIX_FMT_VDPAU_MPEG2; |
| 1224 | } |
| 1225 | |
| 1226 | static enum AVPixelFormat mpeg_get_pixelformat(AVCodecContext *avctx) |
| 1227 | { |
| 1228 | Mpeg1Context *s1 = avctx->priv_data; |
| 1229 | MpegEncContext *s = &s1->mpeg_enc_ctx; |
| 1230 | const enum AVPixelFormat *pix_fmts; |
| 1231 | |
| 1232 | if (s->chroma_format < 2) |
| 1233 | pix_fmts = avctx->codec_id == AV_CODEC_ID_MPEG1VIDEO ? |
| 1234 | mpeg1_hwaccel_pixfmt_list_420 : |
| 1235 | mpeg2_hwaccel_pixfmt_list_420; |
| 1236 | else if (s->chroma_format == 2) |
| 1237 | pix_fmts = mpeg12_pixfmt_list_422; |
| 1238 | else |
| 1239 | pix_fmts = mpeg12_pixfmt_list_444; |
| 1240 | |
| 1241 | return ff_thread_get_format(avctx, pix_fmts); |
| 1242 | } |
| 1243 | |
| 1244 | static void setup_hwaccel_for_pixfmt(AVCodecContext *avctx) |
| 1245 | { |
| 1246 | // until then pix_fmt may be changed right after codec init |
| 1247 | if (avctx->hwaccel || uses_vdpau(avctx)) |
| 1248 | if (avctx->idct_algo == FF_IDCT_AUTO) |
| 1249 | avctx->idct_algo = FF_IDCT_SIMPLE; |
| 1250 | |
| 1251 | if (avctx->hwaccel && avctx->pix_fmt == AV_PIX_FMT_XVMC) { |
| 1252 | Mpeg1Context *s1 = avctx->priv_data; |
| 1253 | MpegEncContext *s = &s1->mpeg_enc_ctx; |
| 1254 | |
| 1255 | s->pack_pblocks = 1; |
| 1256 | #if FF_API_XVMC |
| 1257 | avctx->xvmc_acceleration = 2; |
| 1258 | #endif /* FF_API_XVMC */ |
| 1259 | } |
| 1260 | } |
| 1261 | |
| 1262 | /* Call this function when we know all parameters. |
| 1263 | * It may be called in different places for MPEG-1 and MPEG-2. */ |
| 1264 | static int mpeg_decode_postinit(AVCodecContext *avctx) |
| 1265 | { |
| 1266 | Mpeg1Context *s1 = avctx->priv_data; |
| 1267 | MpegEncContext *s = &s1->mpeg_enc_ctx; |
| 1268 | uint8_t old_permutation[64]; |
| 1269 | int ret; |
| 1270 | |
| 1271 | if ((s1->mpeg_enc_ctx_allocated == 0) || |
| 1272 | avctx->coded_width != s->width || |
| 1273 | avctx->coded_height != s->height || |
| 1274 | s1->save_width != s->width || |
| 1275 | s1->save_height != s->height || |
| 1276 | s1->save_aspect_info != s->aspect_ratio_info || |
| 1277 | (s1->save_progressive_seq != s->progressive_sequence && FFALIGN(s->height, 16) != FFALIGN(s->height, 32)) || |
| 1278 | 0) { |
| 1279 | if (s1->mpeg_enc_ctx_allocated) { |
| 1280 | ParseContext pc = s->parse_context; |
| 1281 | s->parse_context.buffer = 0; |
| 1282 | ff_mpv_common_end(s); |
| 1283 | s->parse_context = pc; |
| 1284 | s1->mpeg_enc_ctx_allocated = 0; |
| 1285 | } |
| 1286 | |
| 1287 | if ((s->width == 0) || (s->height == 0)) |
| 1288 | return -2; |
| 1289 | |
| 1290 | ret = ff_set_dimensions(avctx, s->width, s->height); |
| 1291 | if (ret < 0) |
| 1292 | return ret; |
| 1293 | |
| 1294 | if (avctx->codec_id == AV_CODEC_ID_MPEG2VIDEO && s->bit_rate) { |
| 1295 | avctx->rc_max_rate = s->bit_rate; |
| 1296 | } else if (avctx->codec_id == AV_CODEC_ID_MPEG1VIDEO && s->bit_rate && |
| 1297 | (s->bit_rate != 0x3FFFF*400 || s->vbv_delay != 0xFFFF)) { |
| 1298 | avctx->bit_rate = s->bit_rate; |
| 1299 | } |
| 1300 | s1->save_aspect_info = s->aspect_ratio_info; |
| 1301 | s1->save_width = s->width; |
| 1302 | s1->save_height = s->height; |
| 1303 | s1->save_progressive_seq = s->progressive_sequence; |
| 1304 | |
| 1305 | /* low_delay may be forced, in this case we will have B-frames |
| 1306 | * that behave like P-frames. */ |
| 1307 | avctx->has_b_frames = !s->low_delay; |
| 1308 | |
| 1309 | if (avctx->codec_id == AV_CODEC_ID_MPEG1VIDEO) { |
| 1310 | // MPEG-1 fps |
| 1311 | avctx->time_base.den = ff_mpeg12_frame_rate_tab[s->frame_rate_index].num; |
| 1312 | avctx->time_base.num = ff_mpeg12_frame_rate_tab[s->frame_rate_index].den; |
| 1313 | // MPEG-1 aspect |
| 1314 | avctx->sample_aspect_ratio = av_d2q(1.0 / ff_mpeg1_aspect[s->aspect_ratio_info], 255); |
| 1315 | avctx->ticks_per_frame = 1; |
| 1316 | } else { // MPEG-2 |
| 1317 | // MPEG-2 fps |
| 1318 | av_reduce(&s->avctx->time_base.den, |
| 1319 | &s->avctx->time_base.num, |
| 1320 | ff_mpeg12_frame_rate_tab[s->frame_rate_index].num * s1->frame_rate_ext.num * 2, |
| 1321 | ff_mpeg12_frame_rate_tab[s->frame_rate_index].den * s1->frame_rate_ext.den, |
| 1322 | 1 << 30); |
| 1323 | avctx->ticks_per_frame = 2; |
| 1324 | // MPEG-2 aspect |
| 1325 | if (s->aspect_ratio_info > 1) { |
| 1326 | AVRational dar = |
| 1327 | av_mul_q(av_div_q(ff_mpeg2_aspect[s->aspect_ratio_info], |
| 1328 | (AVRational) { s1->pan_scan.width, |
| 1329 | s1->pan_scan.height }), |
| 1330 | (AVRational) { s->width, s->height }); |
| 1331 | |
| 1332 | /* We ignore the spec here and guess a bit as reality does not |
| 1333 | * match the spec, see for example res_change_ffmpeg_aspect.ts |
| 1334 | * and sequence-display-aspect.mpg. |
| 1335 | * issue1613, 621, 562 */ |
| 1336 | if ((s1->pan_scan.width == 0) || (s1->pan_scan.height == 0) || |
| 1337 | (av_cmp_q(dar, (AVRational) { 4, 3 }) && |
| 1338 | av_cmp_q(dar, (AVRational) { 16, 9 }))) { |
| 1339 | s->avctx->sample_aspect_ratio = |
| 1340 | av_div_q(ff_mpeg2_aspect[s->aspect_ratio_info], |
| 1341 | (AVRational) { s->width, s->height }); |
| 1342 | } else { |
| 1343 | s->avctx->sample_aspect_ratio = |
| 1344 | av_div_q(ff_mpeg2_aspect[s->aspect_ratio_info], |
| 1345 | (AVRational) { s1->pan_scan.width, s1->pan_scan.height }); |
| 1346 | // issue1613 4/3 16/9 -> 16/9 |
| 1347 | // res_change_ffmpeg_aspect.ts 4/3 225/44 ->4/3 |
| 1348 | // widescreen-issue562.mpg 4/3 16/9 -> 16/9 |
| 1349 | // s->avctx->sample_aspect_ratio = av_mul_q(s->avctx->sample_aspect_ratio, (AVRational) {s->width, s->height}); |
| 1350 | av_dlog(avctx, "A %d/%d\n", |
| 1351 | ff_mpeg2_aspect[s->aspect_ratio_info].num, |
| 1352 | ff_mpeg2_aspect[s->aspect_ratio_info].den); |
| 1353 | av_dlog(avctx, "B %d/%d\n", s->avctx->sample_aspect_ratio.num, |
| 1354 | s->avctx->sample_aspect_ratio.den); |
| 1355 | } |
| 1356 | } else { |
| 1357 | s->avctx->sample_aspect_ratio = |
| 1358 | ff_mpeg2_aspect[s->aspect_ratio_info]; |
| 1359 | } |
| 1360 | } // MPEG-2 |
| 1361 | |
| 1362 | ff_set_sar(s->avctx, s->avctx->sample_aspect_ratio); |
| 1363 | |
| 1364 | avctx->pix_fmt = mpeg_get_pixelformat(avctx); |
| 1365 | setup_hwaccel_for_pixfmt(avctx); |
| 1366 | |
| 1367 | /* Quantization matrices may need reordering |
| 1368 | * if DCT permutation is changed. */ |
| 1369 | memcpy(old_permutation, s->idsp.idct_permutation, 64 * sizeof(uint8_t)); |
| 1370 | |
| 1371 | ff_mpv_idct_init(s); |
| 1372 | if (ff_mpv_common_init(s) < 0) |
| 1373 | return -2; |
| 1374 | |
| 1375 | quant_matrix_rebuild(s->intra_matrix, old_permutation, s->idsp.idct_permutation); |
| 1376 | quant_matrix_rebuild(s->inter_matrix, old_permutation, s->idsp.idct_permutation); |
| 1377 | quant_matrix_rebuild(s->chroma_intra_matrix, old_permutation, s->idsp.idct_permutation); |
| 1378 | quant_matrix_rebuild(s->chroma_inter_matrix, old_permutation, s->idsp.idct_permutation); |
| 1379 | |
| 1380 | s1->mpeg_enc_ctx_allocated = 1; |
| 1381 | } |
| 1382 | return 0; |
| 1383 | } |
| 1384 | |
| 1385 | static int mpeg1_decode_picture(AVCodecContext *avctx, const uint8_t *buf, |
| 1386 | int buf_size) |
| 1387 | { |
| 1388 | Mpeg1Context *s1 = avctx->priv_data; |
| 1389 | MpegEncContext *s = &s1->mpeg_enc_ctx; |
| 1390 | int ref, f_code, vbv_delay; |
| 1391 | |
| 1392 | init_get_bits(&s->gb, buf, buf_size * 8); |
| 1393 | |
| 1394 | ref = get_bits(&s->gb, 10); /* temporal ref */ |
| 1395 | s->pict_type = get_bits(&s->gb, 3); |
| 1396 | if (s->pict_type == 0 || s->pict_type > 3) |
| 1397 | return -1; |
| 1398 | |
| 1399 | vbv_delay = get_bits(&s->gb, 16); |
| 1400 | s->vbv_delay = vbv_delay; |
| 1401 | if (s->pict_type == AV_PICTURE_TYPE_P || |
| 1402 | s->pict_type == AV_PICTURE_TYPE_B) { |
| 1403 | s->full_pel[0] = get_bits1(&s->gb); |
| 1404 | f_code = get_bits(&s->gb, 3); |
| 1405 | if (f_code == 0 && (avctx->err_recognition & (AV_EF_BITSTREAM|AV_EF_COMPLIANT))) |
| 1406 | return -1; |
| 1407 | f_code += !f_code; |
| 1408 | s->mpeg_f_code[0][0] = f_code; |
| 1409 | s->mpeg_f_code[0][1] = f_code; |
| 1410 | } |
| 1411 | if (s->pict_type == AV_PICTURE_TYPE_B) { |
| 1412 | s->full_pel[1] = get_bits1(&s->gb); |
| 1413 | f_code = get_bits(&s->gb, 3); |
| 1414 | if (f_code == 0 && (avctx->err_recognition & (AV_EF_BITSTREAM|AV_EF_COMPLIANT))) |
| 1415 | return -1; |
| 1416 | f_code += !f_code; |
| 1417 | s->mpeg_f_code[1][0] = f_code; |
| 1418 | s->mpeg_f_code[1][1] = f_code; |
| 1419 | } |
| 1420 | s->current_picture.f->pict_type = s->pict_type; |
| 1421 | s->current_picture.f->key_frame = s->pict_type == AV_PICTURE_TYPE_I; |
| 1422 | |
| 1423 | if (avctx->debug & FF_DEBUG_PICT_INFO) |
| 1424 | av_log(avctx, AV_LOG_DEBUG, |
| 1425 | "vbv_delay %d, ref %d type:%d\n", vbv_delay, ref, s->pict_type); |
| 1426 | |
| 1427 | s->y_dc_scale = 8; |
| 1428 | s->c_dc_scale = 8; |
| 1429 | return 0; |
| 1430 | } |
| 1431 | |
| 1432 | static void mpeg_decode_sequence_extension(Mpeg1Context *s1) |
| 1433 | { |
| 1434 | MpegEncContext *s = &s1->mpeg_enc_ctx; |
| 1435 | int horiz_size_ext, vert_size_ext; |
| 1436 | int bit_rate_ext; |
| 1437 | |
| 1438 | skip_bits(&s->gb, 1); /* profile and level esc*/ |
| 1439 | s->avctx->profile = get_bits(&s->gb, 3); |
| 1440 | s->avctx->level = get_bits(&s->gb, 4); |
| 1441 | s->progressive_sequence = get_bits1(&s->gb); /* progressive_sequence */ |
| 1442 | s->chroma_format = get_bits(&s->gb, 2); /* chroma_format 1=420, 2=422, 3=444 */ |
| 1443 | horiz_size_ext = get_bits(&s->gb, 2); |
| 1444 | vert_size_ext = get_bits(&s->gb, 2); |
| 1445 | s->width |= (horiz_size_ext << 12); |
| 1446 | s->height |= (vert_size_ext << 12); |
| 1447 | bit_rate_ext = get_bits(&s->gb, 12); /* XXX: handle it */ |
| 1448 | s->bit_rate += (bit_rate_ext << 18) * 400; |
| 1449 | skip_bits1(&s->gb); /* marker */ |
| 1450 | s->avctx->rc_buffer_size += get_bits(&s->gb, 8) * 1024 * 16 << 10; |
| 1451 | |
| 1452 | s->low_delay = get_bits1(&s->gb); |
| 1453 | if (s->flags & CODEC_FLAG_LOW_DELAY) |
| 1454 | s->low_delay = 1; |
| 1455 | |
| 1456 | s1->frame_rate_ext.num = get_bits(&s->gb, 2) + 1; |
| 1457 | s1->frame_rate_ext.den = get_bits(&s->gb, 5) + 1; |
| 1458 | |
| 1459 | av_dlog(s->avctx, "sequence extension\n"); |
| 1460 | s->codec_id = s->avctx->codec_id = AV_CODEC_ID_MPEG2VIDEO; |
| 1461 | |
| 1462 | if (s->avctx->debug & FF_DEBUG_PICT_INFO) |
| 1463 | av_log(s->avctx, AV_LOG_DEBUG, |
| 1464 | "profile: %d, level: %d ps: %d cf:%d vbv buffer: %d, bitrate:%d\n", |
| 1465 | s->avctx->profile, s->avctx->level, s->progressive_sequence, s->chroma_format, |
| 1466 | s->avctx->rc_buffer_size, s->bit_rate); |
| 1467 | } |
| 1468 | |
| 1469 | static void mpeg_decode_sequence_display_extension(Mpeg1Context *s1) |
| 1470 | { |
| 1471 | MpegEncContext *s = &s1->mpeg_enc_ctx; |
| 1472 | int color_description, w, h; |
| 1473 | |
| 1474 | skip_bits(&s->gb, 3); /* video format */ |
| 1475 | color_description = get_bits1(&s->gb); |
| 1476 | if (color_description) { |
| 1477 | s->avctx->color_primaries = get_bits(&s->gb, 8); |
| 1478 | s->avctx->color_trc = get_bits(&s->gb, 8); |
| 1479 | s->avctx->colorspace = get_bits(&s->gb, 8); |
| 1480 | } |
| 1481 | w = get_bits(&s->gb, 14); |
| 1482 | skip_bits(&s->gb, 1); // marker |
| 1483 | h = get_bits(&s->gb, 14); |
| 1484 | // remaining 3 bits are zero padding |
| 1485 | |
| 1486 | s1->pan_scan.width = 16 * w; |
| 1487 | s1->pan_scan.height = 16 * h; |
| 1488 | |
| 1489 | if (s->avctx->debug & FF_DEBUG_PICT_INFO) |
| 1490 | av_log(s->avctx, AV_LOG_DEBUG, "sde w:%d, h:%d\n", w, h); |
| 1491 | } |
| 1492 | |
| 1493 | static void mpeg_decode_picture_display_extension(Mpeg1Context *s1) |
| 1494 | { |
| 1495 | MpegEncContext *s = &s1->mpeg_enc_ctx; |
| 1496 | int i, nofco; |
| 1497 | |
| 1498 | nofco = 1; |
| 1499 | if (s->progressive_sequence) { |
| 1500 | if (s->repeat_first_field) { |
| 1501 | nofco++; |
| 1502 | if (s->top_field_first) |
| 1503 | nofco++; |
| 1504 | } |
| 1505 | } else { |
| 1506 | if (s->picture_structure == PICT_FRAME) { |
| 1507 | nofco++; |
| 1508 | if (s->repeat_first_field) |
| 1509 | nofco++; |
| 1510 | } |
| 1511 | } |
| 1512 | for (i = 0; i < nofco; i++) { |
| 1513 | s1->pan_scan.position[i][0] = get_sbits(&s->gb, 16); |
| 1514 | skip_bits(&s->gb, 1); // marker |
| 1515 | s1->pan_scan.position[i][1] = get_sbits(&s->gb, 16); |
| 1516 | skip_bits(&s->gb, 1); // marker |
| 1517 | } |
| 1518 | |
| 1519 | if (s->avctx->debug & FF_DEBUG_PICT_INFO) |
| 1520 | av_log(s->avctx, AV_LOG_DEBUG, |
| 1521 | "pde (%"PRId16",%"PRId16") (%"PRId16",%"PRId16") (%"PRId16",%"PRId16")\n", |
| 1522 | s1->pan_scan.position[0][0], s1->pan_scan.position[0][1], |
| 1523 | s1->pan_scan.position[1][0], s1->pan_scan.position[1][1], |
| 1524 | s1->pan_scan.position[2][0], s1->pan_scan.position[2][1]); |
| 1525 | } |
| 1526 | |
| 1527 | static int load_matrix(MpegEncContext *s, uint16_t matrix0[64], |
| 1528 | uint16_t matrix1[64], int intra) |
| 1529 | { |
| 1530 | int i; |
| 1531 | |
| 1532 | for (i = 0; i < 64; i++) { |
| 1533 | int j = s->idsp.idct_permutation[ff_zigzag_direct[i]]; |
| 1534 | int v = get_bits(&s->gb, 8); |
| 1535 | if (v == 0) { |
| 1536 | av_log(s->avctx, AV_LOG_ERROR, "matrix damaged\n"); |
| 1537 | return -1; |
| 1538 | } |
| 1539 | if (intra && i == 0 && v != 8) { |
| 1540 | av_log(s->avctx, AV_LOG_DEBUG, "intra matrix specifies invalid DC quantizer %d, ignoring\n", v); |
| 1541 | v = 8; // needed by pink.mpg / issue1046 |
| 1542 | } |
| 1543 | matrix0[j] = v; |
| 1544 | if (matrix1) |
| 1545 | matrix1[j] = v; |
| 1546 | } |
| 1547 | return 0; |
| 1548 | } |
| 1549 | |
| 1550 | static void mpeg_decode_quant_matrix_extension(MpegEncContext *s) |
| 1551 | { |
| 1552 | av_dlog(s->avctx, "matrix extension\n"); |
| 1553 | |
| 1554 | if (get_bits1(&s->gb)) |
| 1555 | load_matrix(s, s->chroma_intra_matrix, s->intra_matrix, 1); |
| 1556 | if (get_bits1(&s->gb)) |
| 1557 | load_matrix(s, s->chroma_inter_matrix, s->inter_matrix, 0); |
| 1558 | if (get_bits1(&s->gb)) |
| 1559 | load_matrix(s, s->chroma_intra_matrix, NULL, 1); |
| 1560 | if (get_bits1(&s->gb)) |
| 1561 | load_matrix(s, s->chroma_inter_matrix, NULL, 0); |
| 1562 | } |
| 1563 | |
| 1564 | static void mpeg_decode_picture_coding_extension(Mpeg1Context *s1) |
| 1565 | { |
| 1566 | MpegEncContext *s = &s1->mpeg_enc_ctx; |
| 1567 | |
| 1568 | s->full_pel[0] = s->full_pel[1] = 0; |
| 1569 | s->mpeg_f_code[0][0] = get_bits(&s->gb, 4); |
| 1570 | s->mpeg_f_code[0][1] = get_bits(&s->gb, 4); |
| 1571 | s->mpeg_f_code[1][0] = get_bits(&s->gb, 4); |
| 1572 | s->mpeg_f_code[1][1] = get_bits(&s->gb, 4); |
| 1573 | if (!s->pict_type && s1->mpeg_enc_ctx_allocated) { |
| 1574 | av_log(s->avctx, AV_LOG_ERROR, |
| 1575 | "Missing picture start code, guessing missing values\n"); |
| 1576 | if (s->mpeg_f_code[1][0] == 15 && s->mpeg_f_code[1][1] == 15) { |
| 1577 | if (s->mpeg_f_code[0][0] == 15 && s->mpeg_f_code[0][1] == 15) |
| 1578 | s->pict_type = AV_PICTURE_TYPE_I; |
| 1579 | else |
| 1580 | s->pict_type = AV_PICTURE_TYPE_P; |
| 1581 | } else |
| 1582 | s->pict_type = AV_PICTURE_TYPE_B; |
| 1583 | s->current_picture.f->pict_type = s->pict_type; |
| 1584 | s->current_picture.f->key_frame = s->pict_type == AV_PICTURE_TYPE_I; |
| 1585 | } |
| 1586 | s->mpeg_f_code[0][0] += !s->mpeg_f_code[0][0]; |
| 1587 | s->mpeg_f_code[0][1] += !s->mpeg_f_code[0][1]; |
| 1588 | s->mpeg_f_code[1][0] += !s->mpeg_f_code[1][0]; |
| 1589 | s->mpeg_f_code[1][1] += !s->mpeg_f_code[1][1]; |
| 1590 | |
| 1591 | s->intra_dc_precision = get_bits(&s->gb, 2); |
| 1592 | s->picture_structure = get_bits(&s->gb, 2); |
| 1593 | s->top_field_first = get_bits1(&s->gb); |
| 1594 | s->frame_pred_frame_dct = get_bits1(&s->gb); |
| 1595 | s->concealment_motion_vectors = get_bits1(&s->gb); |
| 1596 | s->q_scale_type = get_bits1(&s->gb); |
| 1597 | s->intra_vlc_format = get_bits1(&s->gb); |
| 1598 | s->alternate_scan = get_bits1(&s->gb); |
| 1599 | s->repeat_first_field = get_bits1(&s->gb); |
| 1600 | s->chroma_420_type = get_bits1(&s->gb); |
| 1601 | s->progressive_frame = get_bits1(&s->gb); |
| 1602 | |
| 1603 | if (s->alternate_scan) { |
| 1604 | ff_init_scantable(s->idsp.idct_permutation, &s->inter_scantable, ff_alternate_vertical_scan); |
| 1605 | ff_init_scantable(s->idsp.idct_permutation, &s->intra_scantable, ff_alternate_vertical_scan); |
| 1606 | } else { |
| 1607 | ff_init_scantable(s->idsp.idct_permutation, &s->inter_scantable, ff_zigzag_direct); |
| 1608 | ff_init_scantable(s->idsp.idct_permutation, &s->intra_scantable, ff_zigzag_direct); |
| 1609 | } |
| 1610 | |
| 1611 | /* composite display not parsed */ |
| 1612 | av_dlog(s->avctx, "intra_dc_precision=%d\n", s->intra_dc_precision); |
| 1613 | av_dlog(s->avctx, "picture_structure=%d\n", s->picture_structure); |
| 1614 | av_dlog(s->avctx, "top field first=%d\n", s->top_field_first); |
| 1615 | av_dlog(s->avctx, "repeat first field=%d\n", s->repeat_first_field); |
| 1616 | av_dlog(s->avctx, "conceal=%d\n", s->concealment_motion_vectors); |
| 1617 | av_dlog(s->avctx, "intra_vlc_format=%d\n", s->intra_vlc_format); |
| 1618 | av_dlog(s->avctx, "alternate_scan=%d\n", s->alternate_scan); |
| 1619 | av_dlog(s->avctx, "frame_pred_frame_dct=%d\n", s->frame_pred_frame_dct); |
| 1620 | av_dlog(s->avctx, "progressive_frame=%d\n", s->progressive_frame); |
| 1621 | } |
| 1622 | |
| 1623 | static int mpeg_field_start(MpegEncContext *s, const uint8_t *buf, int buf_size) |
| 1624 | { |
| 1625 | AVCodecContext *avctx = s->avctx; |
| 1626 | Mpeg1Context *s1 = (Mpeg1Context *) s; |
| 1627 | |
| 1628 | /* start frame decoding */ |
| 1629 | if (s->first_field || s->picture_structure == PICT_FRAME) { |
| 1630 | AVFrameSideData *pan_scan; |
| 1631 | |
| 1632 | if (ff_mpv_frame_start(s, avctx) < 0) |
| 1633 | return -1; |
| 1634 | |
| 1635 | ff_mpeg_er_frame_start(s); |
| 1636 | |
| 1637 | /* first check if we must repeat the frame */ |
| 1638 | s->current_picture_ptr->f->repeat_pict = 0; |
| 1639 | if (s->repeat_first_field) { |
| 1640 | if (s->progressive_sequence) { |
| 1641 | if (s->top_field_first) |
| 1642 | s->current_picture_ptr->f->repeat_pict = 4; |
| 1643 | else |
| 1644 | s->current_picture_ptr->f->repeat_pict = 2; |
| 1645 | } else if (s->progressive_frame) { |
| 1646 | s->current_picture_ptr->f->repeat_pict = 1; |
| 1647 | } |
| 1648 | } |
| 1649 | |
| 1650 | pan_scan = av_frame_new_side_data(s->current_picture_ptr->f, |
| 1651 | AV_FRAME_DATA_PANSCAN, |
| 1652 | sizeof(s1->pan_scan)); |
| 1653 | if (!pan_scan) |
| 1654 | return AVERROR(ENOMEM); |
| 1655 | memcpy(pan_scan->data, &s1->pan_scan, sizeof(s1->pan_scan)); |
| 1656 | |
| 1657 | if (s1->a53_caption) { |
| 1658 | AVFrameSideData *sd = av_frame_new_side_data( |
| 1659 | s->current_picture_ptr->f, AV_FRAME_DATA_A53_CC, |
| 1660 | s1->a53_caption_size); |
| 1661 | if (sd) |
| 1662 | memcpy(sd->data, s1->a53_caption, s1->a53_caption_size); |
| 1663 | av_freep(&s1->a53_caption); |
| 1664 | } |
| 1665 | |
| 1666 | if (s1->has_stereo3d) { |
| 1667 | AVStereo3D *stereo = av_stereo3d_create_side_data(s->current_picture_ptr->f); |
| 1668 | if (!stereo) |
| 1669 | return AVERROR(ENOMEM); |
| 1670 | |
| 1671 | *stereo = s1->stereo3d; |
| 1672 | s1->has_stereo3d = 0; |
| 1673 | } |
| 1674 | |
| 1675 | if (s1->has_afd) { |
| 1676 | AVFrameSideData *sd = |
| 1677 | av_frame_new_side_data(s->current_picture_ptr->f, |
| 1678 | AV_FRAME_DATA_AFD, 1); |
| 1679 | if (!sd) |
| 1680 | return AVERROR(ENOMEM); |
| 1681 | |
| 1682 | *sd->data = s1->afd; |
| 1683 | s1->has_afd = 0; |
| 1684 | } |
| 1685 | |
| 1686 | if (HAVE_THREADS && (avctx->active_thread_type & FF_THREAD_FRAME)) |
| 1687 | ff_thread_finish_setup(avctx); |
| 1688 | } else { // second field |
| 1689 | int i; |
| 1690 | |
| 1691 | if (!s->current_picture_ptr) { |
| 1692 | av_log(s->avctx, AV_LOG_ERROR, "first field missing\n"); |
| 1693 | return -1; |
| 1694 | } |
| 1695 | |
| 1696 | if (s->avctx->hwaccel && |
| 1697 | (s->avctx->slice_flags & SLICE_FLAG_ALLOW_FIELD)) { |
| 1698 | if (s->avctx->hwaccel->end_frame(s->avctx) < 0) |
| 1699 | av_log(avctx, AV_LOG_ERROR, |
| 1700 | "hardware accelerator failed to decode first field\n"); |
| 1701 | } |
| 1702 | |
| 1703 | for (i = 0; i < 4; i++) { |
| 1704 | s->current_picture.f->data[i] = s->current_picture_ptr->f->data[i]; |
| 1705 | if (s->picture_structure == PICT_BOTTOM_FIELD) |
| 1706 | s->current_picture.f->data[i] += |
| 1707 | s->current_picture_ptr->f->linesize[i]; |
| 1708 | } |
| 1709 | } |
| 1710 | |
| 1711 | if (avctx->hwaccel) { |
| 1712 | if (avctx->hwaccel->start_frame(avctx, buf, buf_size) < 0) |
| 1713 | return -1; |
| 1714 | } |
| 1715 | |
| 1716 | return 0; |
| 1717 | } |
| 1718 | |
| 1719 | #define DECODE_SLICE_ERROR -1 |
| 1720 | #define DECODE_SLICE_OK 0 |
| 1721 | |
| 1722 | /** |
| 1723 | * Decode a slice. |
| 1724 | * MpegEncContext.mb_y must be set to the MB row from the startcode. |
| 1725 | * @return DECODE_SLICE_ERROR if the slice is damaged, |
| 1726 | * DECODE_SLICE_OK if this slice is OK |
| 1727 | */ |
| 1728 | static int mpeg_decode_slice(MpegEncContext *s, int mb_y, |
| 1729 | const uint8_t **buf, int buf_size) |
| 1730 | { |
| 1731 | AVCodecContext *avctx = s->avctx; |
| 1732 | const int lowres = s->avctx->lowres; |
| 1733 | const int field_pic = s->picture_structure != PICT_FRAME; |
| 1734 | |
| 1735 | s->resync_mb_x = |
| 1736 | s->resync_mb_y = -1; |
| 1737 | |
| 1738 | av_assert0(mb_y < s->mb_height); |
| 1739 | |
| 1740 | init_get_bits(&s->gb, *buf, buf_size * 8); |
| 1741 | if (s->codec_id != AV_CODEC_ID_MPEG1VIDEO && s->mb_height > 2800/16) |
| 1742 | skip_bits(&s->gb, 3); |
| 1743 | |
| 1744 | ff_mpeg1_clean_buffers(s); |
| 1745 | s->interlaced_dct = 0; |
| 1746 | |
| 1747 | s->qscale = get_qscale(s); |
| 1748 | |
| 1749 | if (s->qscale == 0) { |
| 1750 | av_log(s->avctx, AV_LOG_ERROR, "qscale == 0\n"); |
| 1751 | return -1; |
| 1752 | } |
| 1753 | |
| 1754 | /* extra slice info */ |
| 1755 | if (skip_1stop_8data_bits(&s->gb) < 0) |
| 1756 | return AVERROR_INVALIDDATA; |
| 1757 | |
| 1758 | s->mb_x = 0; |
| 1759 | |
| 1760 | if (mb_y == 0 && s->codec_tag == AV_RL32("SLIF")) { |
| 1761 | skip_bits1(&s->gb); |
| 1762 | } else { |
| 1763 | while (get_bits_left(&s->gb) > 0) { |
| 1764 | int code = get_vlc2(&s->gb, ff_mbincr_vlc.table, |
| 1765 | MBINCR_VLC_BITS, 2); |
| 1766 | if (code < 0) { |
| 1767 | av_log(s->avctx, AV_LOG_ERROR, "first mb_incr damaged\n"); |
| 1768 | return -1; |
| 1769 | } |
| 1770 | if (code >= 33) { |
| 1771 | if (code == 33) |
| 1772 | s->mb_x += 33; |
| 1773 | /* otherwise, stuffing, nothing to do */ |
| 1774 | } else { |
| 1775 | s->mb_x += code; |
| 1776 | break; |
| 1777 | } |
| 1778 | } |
| 1779 | } |
| 1780 | |
| 1781 | if (s->mb_x >= (unsigned) s->mb_width) { |
| 1782 | av_log(s->avctx, AV_LOG_ERROR, "initial skip overflow\n"); |
| 1783 | return -1; |
| 1784 | } |
| 1785 | |
| 1786 | if (avctx->hwaccel && avctx->hwaccel->decode_slice) { |
| 1787 | const uint8_t *buf_end, *buf_start = *buf - 4; /* include start_code */ |
| 1788 | int start_code = -1; |
| 1789 | buf_end = avpriv_find_start_code(buf_start + 2, *buf + buf_size, &start_code); |
| 1790 | if (buf_end < *buf + buf_size) |
| 1791 | buf_end -= 4; |
| 1792 | s->mb_y = mb_y; |
| 1793 | if (avctx->hwaccel->decode_slice(avctx, buf_start, buf_end - buf_start) < 0) |
| 1794 | return DECODE_SLICE_ERROR; |
| 1795 | *buf = buf_end; |
| 1796 | return DECODE_SLICE_OK; |
| 1797 | } |
| 1798 | |
| 1799 | s->resync_mb_x = s->mb_x; |
| 1800 | s->resync_mb_y = s->mb_y = mb_y; |
| 1801 | s->mb_skip_run = 0; |
| 1802 | ff_init_block_index(s); |
| 1803 | |
| 1804 | if (s->mb_y == 0 && s->mb_x == 0 && (s->first_field || s->picture_structure == PICT_FRAME)) { |
| 1805 | if (s->avctx->debug & FF_DEBUG_PICT_INFO) { |
| 1806 | av_log(s->avctx, AV_LOG_DEBUG, |
| 1807 | "qp:%d fc:%2d%2d%2d%2d %s %s %s %s %s dc:%d pstruct:%d fdct:%d cmv:%d qtype:%d ivlc:%d rff:%d %s\n", |
| 1808 | s->qscale, |
| 1809 | s->mpeg_f_code[0][0], s->mpeg_f_code[0][1], |
| 1810 | s->mpeg_f_code[1][0], s->mpeg_f_code[1][1], |
| 1811 | s->pict_type == AV_PICTURE_TYPE_I ? "I" : |
| 1812 | (s->pict_type == AV_PICTURE_TYPE_P ? "P" : |
| 1813 | (s->pict_type == AV_PICTURE_TYPE_B ? "B" : "S")), |
| 1814 | s->progressive_sequence ? "ps" : "", |
| 1815 | s->progressive_frame ? "pf" : "", |
| 1816 | s->alternate_scan ? "alt" : "", |
| 1817 | s->top_field_first ? "top" : "", |
| 1818 | s->intra_dc_precision, s->picture_structure, |
| 1819 | s->frame_pred_frame_dct, s->concealment_motion_vectors, |
| 1820 | s->q_scale_type, s->intra_vlc_format, |
| 1821 | s->repeat_first_field, s->chroma_420_type ? "420" : ""); |
| 1822 | } |
| 1823 | } |
| 1824 | |
| 1825 | for (;;) { |
| 1826 | // If 1, we memcpy blocks in xvmcvideo. |
| 1827 | if ((CONFIG_MPEG1_XVMC_HWACCEL || CONFIG_MPEG2_XVMC_HWACCEL) && s->pack_pblocks) |
| 1828 | ff_xvmc_init_block(s); // set s->block |
| 1829 | |
| 1830 | if (mpeg_decode_mb(s, s->block) < 0) |
| 1831 | return -1; |
| 1832 | |
| 1833 | // Note motion_val is normally NULL unless we want to extract the MVs. |
| 1834 | if (s->current_picture.motion_val[0] && !s->encoding) { |
| 1835 | const int wrap = s->b8_stride; |
| 1836 | int xy = s->mb_x * 2 + s->mb_y * 2 * wrap; |
| 1837 | int b8_xy = 4 * (s->mb_x + s->mb_y * s->mb_stride); |
| 1838 | int motion_x, motion_y, dir, i; |
| 1839 | |
| 1840 | for (i = 0; i < 2; i++) { |
| 1841 | for (dir = 0; dir < 2; dir++) { |
| 1842 | if (s->mb_intra || |
| 1843 | (dir == 1 && s->pict_type != AV_PICTURE_TYPE_B)) { |
| 1844 | motion_x = motion_y = 0; |
| 1845 | } else if (s->mv_type == MV_TYPE_16X16 || |
| 1846 | (s->mv_type == MV_TYPE_FIELD && field_pic)) { |
| 1847 | motion_x = s->mv[dir][0][0]; |
| 1848 | motion_y = s->mv[dir][0][1]; |
| 1849 | } else { /* if ((s->mv_type == MV_TYPE_FIELD) || (s->mv_type == MV_TYPE_16X8)) */ |
| 1850 | motion_x = s->mv[dir][i][0]; |
| 1851 | motion_y = s->mv[dir][i][1]; |
| 1852 | } |
| 1853 | |
| 1854 | s->current_picture.motion_val[dir][xy][0] = motion_x; |
| 1855 | s->current_picture.motion_val[dir][xy][1] = motion_y; |
| 1856 | s->current_picture.motion_val[dir][xy + 1][0] = motion_x; |
| 1857 | s->current_picture.motion_val[dir][xy + 1][1] = motion_y; |
| 1858 | s->current_picture.ref_index [dir][b8_xy] = |
| 1859 | s->current_picture.ref_index [dir][b8_xy + 1] = s->field_select[dir][i]; |
| 1860 | av_assert2(s->field_select[dir][i] == 0 || |
| 1861 | s->field_select[dir][i] == 1); |
| 1862 | } |
| 1863 | xy += wrap; |
| 1864 | b8_xy += 2; |
| 1865 | } |
| 1866 | } |
| 1867 | |
| 1868 | s->dest[0] += 16 >> lowres; |
| 1869 | s->dest[1] +=(16 >> lowres) >> s->chroma_x_shift; |
| 1870 | s->dest[2] +=(16 >> lowres) >> s->chroma_x_shift; |
| 1871 | |
| 1872 | ff_mpv_decode_mb(s, s->block); |
| 1873 | |
| 1874 | if (++s->mb_x >= s->mb_width) { |
| 1875 | const int mb_size = 16 >> s->avctx->lowres; |
| 1876 | |
| 1877 | ff_mpeg_draw_horiz_band(s, mb_size * (s->mb_y >> field_pic), mb_size); |
| 1878 | ff_mpv_report_decode_progress(s); |
| 1879 | |
| 1880 | s->mb_x = 0; |
| 1881 | s->mb_y += 1 << field_pic; |
| 1882 | |
| 1883 | if (s->mb_y >= s->mb_height) { |
| 1884 | int left = get_bits_left(&s->gb); |
| 1885 | int is_d10 = s->chroma_format == 2 && |
| 1886 | s->pict_type == AV_PICTURE_TYPE_I && |
| 1887 | avctx->profile == 0 && avctx->level == 5 && |
| 1888 | s->intra_dc_precision == 2 && |
| 1889 | s->q_scale_type == 1 && s->alternate_scan == 0 && |
| 1890 | s->progressive_frame == 0 |
| 1891 | /* vbv_delay == 0xBBB || 0xE10 */; |
| 1892 | |
| 1893 | if (left >= 32 && !is_d10) { |
| 1894 | GetBitContext gb = s->gb; |
| 1895 | align_get_bits(&gb); |
| 1896 | if (show_bits(&gb, 24) == 0x060E2B) { |
| 1897 | av_log(avctx, AV_LOG_DEBUG, "Invalid MXF data found in video stream\n"); |
| 1898 | is_d10 = 1; |
| 1899 | } |
| 1900 | } |
| 1901 | |
| 1902 | if (left < 0 || |
| 1903 | (left && show_bits(&s->gb, FFMIN(left, 23)) && !is_d10) || |
| 1904 | ((avctx->err_recognition & (AV_EF_BITSTREAM | AV_EF_AGGRESSIVE)) && left > 8)) { |
| 1905 | av_log(avctx, AV_LOG_ERROR, "end mismatch left=%d %0X\n", |
| 1906 | left, show_bits(&s->gb, FFMIN(left, 23))); |
| 1907 | return -1; |
| 1908 | } else |
| 1909 | goto eos; |
| 1910 | } |
| 1911 | // There are some files out there which are missing the last slice |
| 1912 | // in cases where the slice is completely outside the visible |
| 1913 | // area, we detect this here instead of running into the end expecting |
| 1914 | // more data |
| 1915 | if (s->mb_y >= ((s->height + 15) >> 4) && |
| 1916 | s->progressive_frame && |
| 1917 | !s->progressive_sequence && |
| 1918 | get_bits_left(&s->gb) <= 8 && |
| 1919 | get_bits_left(&s->gb) >= 0 && |
| 1920 | s->mb_skip_run == -1 && |
| 1921 | show_bits(&s->gb, 8) == 0) |
| 1922 | goto eos; |
| 1923 | |
| 1924 | ff_init_block_index(s); |
| 1925 | } |
| 1926 | |
| 1927 | /* skip mb handling */ |
| 1928 | if (s->mb_skip_run == -1) { |
| 1929 | /* read increment again */ |
| 1930 | s->mb_skip_run = 0; |
| 1931 | for (;;) { |
| 1932 | int code = get_vlc2(&s->gb, ff_mbincr_vlc.table, |
| 1933 | MBINCR_VLC_BITS, 2); |
| 1934 | if (code < 0) { |
| 1935 | av_log(s->avctx, AV_LOG_ERROR, "mb incr damaged\n"); |
| 1936 | return -1; |
| 1937 | } |
| 1938 | if (code >= 33) { |
| 1939 | if (code == 33) { |
| 1940 | s->mb_skip_run += 33; |
| 1941 | } else if (code == 35) { |
| 1942 | if (s->mb_skip_run != 0 || show_bits(&s->gb, 15) != 0) { |
| 1943 | av_log(s->avctx, AV_LOG_ERROR, "slice mismatch\n"); |
| 1944 | return -1; |
| 1945 | } |
| 1946 | goto eos; /* end of slice */ |
| 1947 | } |
| 1948 | /* otherwise, stuffing, nothing to do */ |
| 1949 | } else { |
| 1950 | s->mb_skip_run += code; |
| 1951 | break; |
| 1952 | } |
| 1953 | } |
| 1954 | if (s->mb_skip_run) { |
| 1955 | int i; |
| 1956 | if (s->pict_type == AV_PICTURE_TYPE_I) { |
| 1957 | av_log(s->avctx, AV_LOG_ERROR, |
| 1958 | "skipped MB in I frame at %d %d\n", s->mb_x, s->mb_y); |
| 1959 | return -1; |
| 1960 | } |
| 1961 | |
| 1962 | /* skip mb */ |
| 1963 | s->mb_intra = 0; |
| 1964 | for (i = 0; i < 12; i++) |
| 1965 | s->block_last_index[i] = -1; |
| 1966 | if (s->picture_structure == PICT_FRAME) |
| 1967 | s->mv_type = MV_TYPE_16X16; |
| 1968 | else |
| 1969 | s->mv_type = MV_TYPE_FIELD; |
| 1970 | if (s->pict_type == AV_PICTURE_TYPE_P) { |
| 1971 | /* if P type, zero motion vector is implied */ |
| 1972 | s->mv_dir = MV_DIR_FORWARD; |
| 1973 | s->mv[0][0][0] = s->mv[0][0][1] = 0; |
| 1974 | s->last_mv[0][0][0] = s->last_mv[0][0][1] = 0; |
| 1975 | s->last_mv[0][1][0] = s->last_mv[0][1][1] = 0; |
| 1976 | s->field_select[0][0] = (s->picture_structure - 1) & 1; |
| 1977 | } else { |
| 1978 | /* if B type, reuse previous vectors and directions */ |
| 1979 | s->mv[0][0][0] = s->last_mv[0][0][0]; |
| 1980 | s->mv[0][0][1] = s->last_mv[0][0][1]; |
| 1981 | s->mv[1][0][0] = s->last_mv[1][0][0]; |
| 1982 | s->mv[1][0][1] = s->last_mv[1][0][1]; |
| 1983 | } |
| 1984 | } |
| 1985 | } |
| 1986 | } |
| 1987 | eos: // end of slice |
| 1988 | if (get_bits_left(&s->gb) < 0) { |
| 1989 | av_log(s, AV_LOG_ERROR, "overread %d\n", -get_bits_left(&s->gb)); |
| 1990 | return AVERROR_INVALIDDATA; |
| 1991 | } |
| 1992 | *buf += (get_bits_count(&s->gb) - 1) / 8; |
| 1993 | av_dlog(s, "y %d %d %d %d\n", s->resync_mb_x, s->resync_mb_y, s->mb_x, s->mb_y); |
| 1994 | return 0; |
| 1995 | } |
| 1996 | |
| 1997 | static int slice_decode_thread(AVCodecContext *c, void *arg) |
| 1998 | { |
| 1999 | MpegEncContext *s = *(void **) arg; |
| 2000 | const uint8_t *buf = s->gb.buffer; |
| 2001 | int mb_y = s->start_mb_y; |
| 2002 | const int field_pic = s->picture_structure != PICT_FRAME; |
| 2003 | |
| 2004 | s->er.error_count = (3 * (s->end_mb_y - s->start_mb_y) * s->mb_width) >> field_pic; |
| 2005 | |
| 2006 | for (;;) { |
| 2007 | uint32_t start_code; |
| 2008 | int ret; |
| 2009 | |
| 2010 | ret = mpeg_decode_slice(s, mb_y, &buf, s->gb.buffer_end - buf); |
| 2011 | emms_c(); |
| 2012 | av_dlog(c, "ret:%d resync:%d/%d mb:%d/%d ts:%d/%d ec:%d\n", |
| 2013 | ret, s->resync_mb_x, s->resync_mb_y, s->mb_x, s->mb_y, |
| 2014 | s->start_mb_y, s->end_mb_y, s->er.error_count); |
| 2015 | if (ret < 0) { |
| 2016 | if (c->err_recognition & AV_EF_EXPLODE) |
| 2017 | return ret; |
| 2018 | if (s->resync_mb_x >= 0 && s->resync_mb_y >= 0) |
| 2019 | ff_er_add_slice(&s->er, s->resync_mb_x, s->resync_mb_y, |
| 2020 | s->mb_x, s->mb_y, |
| 2021 | ER_AC_ERROR | ER_DC_ERROR | ER_MV_ERROR); |
| 2022 | } else { |
| 2023 | ff_er_add_slice(&s->er, s->resync_mb_x, s->resync_mb_y, |
| 2024 | s->mb_x - 1, s->mb_y, |
| 2025 | ER_AC_END | ER_DC_END | ER_MV_END); |
| 2026 | } |
| 2027 | |
| 2028 | if (s->mb_y == s->end_mb_y) |
| 2029 | return 0; |
| 2030 | |
| 2031 | start_code = -1; |
| 2032 | buf = avpriv_find_start_code(buf, s->gb.buffer_end, &start_code); |
| 2033 | mb_y = start_code - SLICE_MIN_START_CODE; |
| 2034 | if (s->codec_id != AV_CODEC_ID_MPEG1VIDEO && s->mb_height > 2800/16) |
| 2035 | mb_y += (*buf&0xE0)<<2; |
| 2036 | mb_y <<= field_pic; |
| 2037 | if (s->picture_structure == PICT_BOTTOM_FIELD) |
| 2038 | mb_y++; |
| 2039 | if (mb_y < 0 || mb_y >= s->end_mb_y) |
| 2040 | return -1; |
| 2041 | } |
| 2042 | } |
| 2043 | |
| 2044 | /** |
| 2045 | * Handle slice ends. |
| 2046 | * @return 1 if it seems to be the last slice |
| 2047 | */ |
| 2048 | static int slice_end(AVCodecContext *avctx, AVFrame *pict) |
| 2049 | { |
| 2050 | Mpeg1Context *s1 = avctx->priv_data; |
| 2051 | MpegEncContext *s = &s1->mpeg_enc_ctx; |
| 2052 | |
| 2053 | if (!s1->mpeg_enc_ctx_allocated || !s->current_picture_ptr) |
| 2054 | return 0; |
| 2055 | |
| 2056 | if (s->avctx->hwaccel) { |
| 2057 | if (s->avctx->hwaccel->end_frame(s->avctx) < 0) |
| 2058 | av_log(avctx, AV_LOG_ERROR, |
| 2059 | "hardware accelerator failed to decode picture\n"); |
| 2060 | } |
| 2061 | |
| 2062 | /* end of slice reached */ |
| 2063 | if (/* s->mb_y << field_pic == s->mb_height && */ !s->first_field && !s1->first_slice) { |
| 2064 | /* end of image */ |
| 2065 | |
| 2066 | ff_er_frame_end(&s->er); |
| 2067 | |
| 2068 | ff_mpv_frame_end(s); |
| 2069 | |
| 2070 | if (s->pict_type == AV_PICTURE_TYPE_B || s->low_delay) { |
| 2071 | int ret = av_frame_ref(pict, s->current_picture_ptr->f); |
| 2072 | if (ret < 0) |
| 2073 | return ret; |
| 2074 | ff_print_debug_info(s, s->current_picture_ptr, pict); |
| 2075 | ff_mpv_export_qp_table(s, pict, s->current_picture_ptr, FF_QSCALE_TYPE_MPEG2); |
| 2076 | } else { |
| 2077 | if (avctx->active_thread_type & FF_THREAD_FRAME) |
| 2078 | s->picture_number++; |
| 2079 | /* latency of 1 frame for I- and P-frames */ |
| 2080 | /* XXX: use another variable than picture_number */ |
| 2081 | if (s->last_picture_ptr) { |
| 2082 | int ret = av_frame_ref(pict, s->last_picture_ptr->f); |
| 2083 | if (ret < 0) |
| 2084 | return ret; |
| 2085 | ff_print_debug_info(s, s->last_picture_ptr, pict); |
| 2086 | ff_mpv_export_qp_table(s, pict, s->last_picture_ptr, FF_QSCALE_TYPE_MPEG2); |
| 2087 | } |
| 2088 | } |
| 2089 | |
| 2090 | return 1; |
| 2091 | } else { |
| 2092 | return 0; |
| 2093 | } |
| 2094 | } |
| 2095 | |
| 2096 | static int mpeg1_decode_sequence(AVCodecContext *avctx, |
| 2097 | const uint8_t *buf, int buf_size) |
| 2098 | { |
| 2099 | Mpeg1Context *s1 = avctx->priv_data; |
| 2100 | MpegEncContext *s = &s1->mpeg_enc_ctx; |
| 2101 | int width, height; |
| 2102 | int i, v, j; |
| 2103 | |
| 2104 | init_get_bits(&s->gb, buf, buf_size * 8); |
| 2105 | |
| 2106 | width = get_bits(&s->gb, 12); |
| 2107 | height = get_bits(&s->gb, 12); |
| 2108 | if (width == 0 || height == 0) { |
| 2109 | av_log(avctx, AV_LOG_WARNING, |
| 2110 | "Invalid horizontal or vertical size value.\n"); |
| 2111 | if (avctx->err_recognition & (AV_EF_BITSTREAM | AV_EF_COMPLIANT)) |
| 2112 | return AVERROR_INVALIDDATA; |
| 2113 | } |
| 2114 | s->aspect_ratio_info = get_bits(&s->gb, 4); |
| 2115 | if (s->aspect_ratio_info == 0) { |
| 2116 | av_log(avctx, AV_LOG_ERROR, "aspect ratio has forbidden 0 value\n"); |
| 2117 | if (avctx->err_recognition & (AV_EF_BITSTREAM | AV_EF_COMPLIANT)) |
| 2118 | return -1; |
| 2119 | } |
| 2120 | s->frame_rate_index = get_bits(&s->gb, 4); |
| 2121 | if (s->frame_rate_index == 0 || s->frame_rate_index > 13) |
| 2122 | return -1; |
| 2123 | s->bit_rate = get_bits(&s->gb, 18) * 400; |
| 2124 | if (get_bits1(&s->gb) == 0) /* marker */ |
| 2125 | return -1; |
| 2126 | s->width = width; |
| 2127 | s->height = height; |
| 2128 | |
| 2129 | s->avctx->rc_buffer_size = get_bits(&s->gb, 10) * 1024 * 16; |
| 2130 | skip_bits(&s->gb, 1); |
| 2131 | |
| 2132 | /* get matrix */ |
| 2133 | if (get_bits1(&s->gb)) { |
| 2134 | load_matrix(s, s->chroma_intra_matrix, s->intra_matrix, 1); |
| 2135 | } else { |
| 2136 | for (i = 0; i < 64; i++) { |
| 2137 | j = s->idsp.idct_permutation[i]; |
| 2138 | v = ff_mpeg1_default_intra_matrix[i]; |
| 2139 | s->intra_matrix[j] = v; |
| 2140 | s->chroma_intra_matrix[j] = v; |
| 2141 | } |
| 2142 | } |
| 2143 | if (get_bits1(&s->gb)) { |
| 2144 | load_matrix(s, s->chroma_inter_matrix, s->inter_matrix, 0); |
| 2145 | } else { |
| 2146 | for (i = 0; i < 64; i++) { |
| 2147 | int j = s->idsp.idct_permutation[i]; |
| 2148 | v = ff_mpeg1_default_non_intra_matrix[i]; |
| 2149 | s->inter_matrix[j] = v; |
| 2150 | s->chroma_inter_matrix[j] = v; |
| 2151 | } |
| 2152 | } |
| 2153 | |
| 2154 | if (show_bits(&s->gb, 23) != 0) { |
| 2155 | av_log(s->avctx, AV_LOG_ERROR, "sequence header damaged\n"); |
| 2156 | return -1; |
| 2157 | } |
| 2158 | |
| 2159 | /* We set MPEG-2 parameters so that it emulates MPEG-1. */ |
| 2160 | s->progressive_sequence = 1; |
| 2161 | s->progressive_frame = 1; |
| 2162 | s->picture_structure = PICT_FRAME; |
| 2163 | s->first_field = 0; |
| 2164 | s->frame_pred_frame_dct = 1; |
| 2165 | s->chroma_format = 1; |
| 2166 | s->codec_id = |
| 2167 | s->avctx->codec_id = AV_CODEC_ID_MPEG1VIDEO; |
| 2168 | s->out_format = FMT_MPEG1; |
| 2169 | s->swap_uv = 0; // AFAIK VCR2 does not have SEQ_HEADER |
| 2170 | if (s->flags & CODEC_FLAG_LOW_DELAY) |
| 2171 | s->low_delay = 1; |
| 2172 | |
| 2173 | if (s->avctx->debug & FF_DEBUG_PICT_INFO) |
| 2174 | av_log(s->avctx, AV_LOG_DEBUG, "vbv buffer: %d, bitrate:%d\n", |
| 2175 | s->avctx->rc_buffer_size, s->bit_rate); |
| 2176 | |
| 2177 | return 0; |
| 2178 | } |
| 2179 | |
| 2180 | static int vcr2_init_sequence(AVCodecContext *avctx) |
| 2181 | { |
| 2182 | Mpeg1Context *s1 = avctx->priv_data; |
| 2183 | MpegEncContext *s = &s1->mpeg_enc_ctx; |
| 2184 | int i, v; |
| 2185 | |
| 2186 | /* start new MPEG-1 context decoding */ |
| 2187 | s->out_format = FMT_MPEG1; |
| 2188 | if (s1->mpeg_enc_ctx_allocated) { |
| 2189 | ff_mpv_common_end(s); |
| 2190 | s1->mpeg_enc_ctx_allocated = 0; |
| 2191 | } |
| 2192 | s->width = avctx->coded_width; |
| 2193 | s->height = avctx->coded_height; |
| 2194 | avctx->has_b_frames = 0; // true? |
| 2195 | s->low_delay = 1; |
| 2196 | |
| 2197 | avctx->pix_fmt = mpeg_get_pixelformat(avctx); |
| 2198 | setup_hwaccel_for_pixfmt(avctx); |
| 2199 | |
| 2200 | ff_mpv_idct_init(s); |
| 2201 | if (ff_mpv_common_init(s) < 0) |
| 2202 | return -1; |
| 2203 | s1->mpeg_enc_ctx_allocated = 1; |
| 2204 | |
| 2205 | for (i = 0; i < 64; i++) { |
| 2206 | int j = s->idsp.idct_permutation[i]; |
| 2207 | v = ff_mpeg1_default_intra_matrix[i]; |
| 2208 | s->intra_matrix[j] = v; |
| 2209 | s->chroma_intra_matrix[j] = v; |
| 2210 | |
| 2211 | v = ff_mpeg1_default_non_intra_matrix[i]; |
| 2212 | s->inter_matrix[j] = v; |
| 2213 | s->chroma_inter_matrix[j] = v; |
| 2214 | } |
| 2215 | |
| 2216 | s->progressive_sequence = 1; |
| 2217 | s->progressive_frame = 1; |
| 2218 | s->picture_structure = PICT_FRAME; |
| 2219 | s->first_field = 0; |
| 2220 | s->frame_pred_frame_dct = 1; |
| 2221 | s->chroma_format = 1; |
| 2222 | if (s->codec_tag == AV_RL32("BW10")) { |
| 2223 | s->codec_id = s->avctx->codec_id = AV_CODEC_ID_MPEG1VIDEO; |
| 2224 | } else { |
| 2225 | s->swap_uv = 1; // in case of xvmc we need to swap uv for each MB |
| 2226 | s->codec_id = s->avctx->codec_id = AV_CODEC_ID_MPEG2VIDEO; |
| 2227 | } |
| 2228 | s1->save_width = s->width; |
| 2229 | s1->save_height = s->height; |
| 2230 | s1->save_progressive_seq = s->progressive_sequence; |
| 2231 | return 0; |
| 2232 | } |
| 2233 | |
| 2234 | static int mpeg_decode_a53_cc(AVCodecContext *avctx, |
| 2235 | const uint8_t *p, int buf_size) |
| 2236 | { |
| 2237 | Mpeg1Context *s1 = avctx->priv_data; |
| 2238 | |
| 2239 | if (buf_size >= 6 && |
| 2240 | p[0] == 'G' && p[1] == 'A' && p[2] == '9' && p[3] == '4' && |
| 2241 | p[4] == 3 && (p[5] & 0x40)) { |
| 2242 | /* extract A53 Part 4 CC data */ |
| 2243 | int cc_count = p[5] & 0x1f; |
| 2244 | if (cc_count > 0 && buf_size >= 7 + cc_count * 3) { |
| 2245 | av_freep(&s1->a53_caption); |
| 2246 | s1->a53_caption_size = cc_count * 3; |
| 2247 | s1->a53_caption = av_malloc(s1->a53_caption_size); |
| 2248 | if (s1->a53_caption) |
| 2249 | memcpy(s1->a53_caption, p + 7, s1->a53_caption_size); |
| 2250 | } |
| 2251 | return 1; |
| 2252 | } else if (buf_size >= 11 && |
| 2253 | p[0] == 'C' && p[1] == 'C' && p[2] == 0x01 && p[3] == 0xf8) { |
| 2254 | /* extract DVD CC data */ |
| 2255 | int cc_count = 0; |
| 2256 | int i; |
| 2257 | // There is a caption count field in the data, but it is often |
| 2258 | // incorect. So count the number of captions present. |
| 2259 | for (i = 5; i + 6 <= buf_size && ((p[i] & 0xfe) == 0xfe); i += 6) |
| 2260 | cc_count++; |
| 2261 | // Transform the DVD format into A53 Part 4 format |
| 2262 | if (cc_count > 0) { |
| 2263 | av_freep(&s1->a53_caption); |
| 2264 | s1->a53_caption_size = cc_count * 6; |
| 2265 | s1->a53_caption = av_malloc(s1->a53_caption_size); |
| 2266 | if (s1->a53_caption) { |
| 2267 | uint8_t field1 = !!(p[4] & 0x80); |
| 2268 | uint8_t *cap = s1->a53_caption; |
| 2269 | p += 5; |
| 2270 | for (i = 0; i < cc_count; i++) { |
| 2271 | cap[0] = (p[0] == 0xff && field1) ? 0xfc : 0xfd; |
| 2272 | cap[1] = p[1]; |
| 2273 | cap[2] = p[2]; |
| 2274 | cap[3] = (p[3] == 0xff && !field1) ? 0xfc : 0xfd; |
| 2275 | cap[4] = p[4]; |
| 2276 | cap[5] = p[5]; |
| 2277 | cap += 6; |
| 2278 | p += 6; |
| 2279 | } |
| 2280 | } |
| 2281 | } |
| 2282 | return 1; |
| 2283 | } |
| 2284 | return 0; |
| 2285 | } |
| 2286 | |
| 2287 | static void mpeg_decode_user_data(AVCodecContext *avctx, |
| 2288 | const uint8_t *p, int buf_size) |
| 2289 | { |
| 2290 | Mpeg1Context *s = avctx->priv_data; |
| 2291 | const uint8_t *buf_end = p + buf_size; |
| 2292 | Mpeg1Context *s1 = avctx->priv_data; |
| 2293 | |
| 2294 | if (buf_size > 29){ |
| 2295 | int i; |
| 2296 | for(i=0; i<20; i++) |
| 2297 | if (!memcmp(p+i, "\0TMPGEXS\0", 9)){ |
| 2298 | s->tmpgexs= 1; |
| 2299 | } |
| 2300 | |
| 2301 | /* for(i=0; !(!p[i-2] && !p[i-1] && p[i]==1) && i<buf_size; i++){ |
| 2302 | av_log(avctx, AV_LOG_ERROR, "%c", p[i]); |
| 2303 | } |
| 2304 | av_log(avctx, AV_LOG_ERROR, "\n");*/ |
| 2305 | } |
| 2306 | |
| 2307 | /* we parse the DTG active format information */ |
| 2308 | if (buf_end - p >= 5 && |
| 2309 | p[0] == 'D' && p[1] == 'T' && p[2] == 'G' && p[3] == '1') { |
| 2310 | int flags = p[4]; |
| 2311 | p += 5; |
| 2312 | if (flags & 0x80) { |
| 2313 | /* skip event id */ |
| 2314 | p += 2; |
| 2315 | } |
| 2316 | if (flags & 0x40) { |
| 2317 | if (buf_end - p < 1) |
| 2318 | return; |
| 2319 | #if FF_API_AFD |
| 2320 | FF_DISABLE_DEPRECATION_WARNINGS |
| 2321 | avctx->dtg_active_format = p[0] & 0x0f; |
| 2322 | FF_ENABLE_DEPRECATION_WARNINGS |
| 2323 | #endif /* FF_API_AFD */ |
| 2324 | s1->has_afd = 1; |
| 2325 | s1->afd = p[0] & 0x0f; |
| 2326 | } |
| 2327 | } else if (buf_end - p >= 6 && |
| 2328 | p[0] == 'J' && p[1] == 'P' && p[2] == '3' && p[3] == 'D' && |
| 2329 | p[4] == 0x03) { // S3D_video_format_length |
| 2330 | // the 0x7F mask ignores the reserved_bit value |
| 2331 | const uint8_t S3D_video_format_type = p[5] & 0x7F; |
| 2332 | |
| 2333 | if (S3D_video_format_type == 0x03 || |
| 2334 | S3D_video_format_type == 0x04 || |
| 2335 | S3D_video_format_type == 0x08 || |
| 2336 | S3D_video_format_type == 0x23) { |
| 2337 | |
| 2338 | s1->has_stereo3d = 1; |
| 2339 | |
| 2340 | switch (S3D_video_format_type) { |
| 2341 | case 0x03: |
| 2342 | s1->stereo3d.type = AV_STEREO3D_SIDEBYSIDE; |
| 2343 | break; |
| 2344 | case 0x04: |
| 2345 | s1->stereo3d.type = AV_STEREO3D_TOPBOTTOM; |
| 2346 | break; |
| 2347 | case 0x08: |
| 2348 | s1->stereo3d.type = AV_STEREO3D_2D; |
| 2349 | break; |
| 2350 | case 0x23: |
| 2351 | s1->stereo3d.type = AV_STEREO3D_SIDEBYSIDE_QUINCUNX; |
| 2352 | break; |
| 2353 | } |
| 2354 | } |
| 2355 | } else if (mpeg_decode_a53_cc(avctx, p, buf_size)) { |
| 2356 | return; |
| 2357 | } |
| 2358 | } |
| 2359 | |
| 2360 | static void mpeg_decode_gop(AVCodecContext *avctx, |
| 2361 | const uint8_t *buf, int buf_size) |
| 2362 | { |
| 2363 | Mpeg1Context *s1 = avctx->priv_data; |
| 2364 | MpegEncContext *s = &s1->mpeg_enc_ctx; |
| 2365 | int broken_link; |
| 2366 | int64_t tc; |
| 2367 | |
| 2368 | init_get_bits(&s->gb, buf, buf_size * 8); |
| 2369 | |
| 2370 | tc = avctx->timecode_frame_start = get_bits(&s->gb, 25); |
| 2371 | |
| 2372 | s->closed_gop = get_bits1(&s->gb); |
| 2373 | /* broken_link indicate that after editing the |
| 2374 | * reference frames of the first B-Frames after GOP I-Frame |
| 2375 | * are missing (open gop) */ |
| 2376 | broken_link = get_bits1(&s->gb); |
| 2377 | |
| 2378 | if (s->avctx->debug & FF_DEBUG_PICT_INFO) { |
| 2379 | char tcbuf[AV_TIMECODE_STR_SIZE]; |
| 2380 | av_timecode_make_mpeg_tc_string(tcbuf, tc); |
| 2381 | av_log(s->avctx, AV_LOG_DEBUG, |
| 2382 | "GOP (%s) closed_gop=%d broken_link=%d\n", |
| 2383 | tcbuf, s->closed_gop, broken_link); |
| 2384 | } |
| 2385 | } |
| 2386 | |
| 2387 | static int decode_chunks(AVCodecContext *avctx, AVFrame *picture, |
| 2388 | int *got_output, const uint8_t *buf, int buf_size) |
| 2389 | { |
| 2390 | Mpeg1Context *s = avctx->priv_data; |
| 2391 | MpegEncContext *s2 = &s->mpeg_enc_ctx; |
| 2392 | const uint8_t *buf_ptr = buf; |
| 2393 | const uint8_t *buf_end = buf + buf_size; |
| 2394 | int ret, input_size; |
| 2395 | int last_code = 0, skip_frame = 0; |
| 2396 | int picture_start_code_seen = 0; |
| 2397 | |
| 2398 | for (;;) { |
| 2399 | /* find next start code */ |
| 2400 | uint32_t start_code = -1; |
| 2401 | buf_ptr = avpriv_find_start_code(buf_ptr, buf_end, &start_code); |
| 2402 | if (start_code > 0x1ff) { |
| 2403 | if (!skip_frame) { |
| 2404 | if (HAVE_THREADS && |
| 2405 | (avctx->active_thread_type & FF_THREAD_SLICE) && |
| 2406 | !avctx->hwaccel) { |
| 2407 | int i; |
| 2408 | av_assert0(avctx->thread_count > 1); |
| 2409 | |
| 2410 | avctx->execute(avctx, slice_decode_thread, |
| 2411 | &s2->thread_context[0], NULL, |
| 2412 | s->slice_count, sizeof(void *)); |
| 2413 | for (i = 0; i < s->slice_count; i++) |
| 2414 | s2->er.error_count += s2->thread_context[i]->er.error_count; |
| 2415 | } |
| 2416 | |
| 2417 | if ((CONFIG_MPEG_VDPAU_DECODER || CONFIG_MPEG1_VDPAU_DECODER) |
| 2418 | && uses_vdpau(avctx)) |
| 2419 | ff_vdpau_mpeg_picture_complete(s2, buf, buf_size, s->slice_count); |
| 2420 | |
| 2421 | ret = slice_end(avctx, picture); |
| 2422 | if (ret < 0) |
| 2423 | return ret; |
| 2424 | else if (ret) { |
| 2425 | // FIXME: merge with the stuff in mpeg_decode_slice |
| 2426 | if (s2->last_picture_ptr || s2->low_delay) |
| 2427 | *got_output = 1; |
| 2428 | } |
| 2429 | } |
| 2430 | s2->pict_type = 0; |
| 2431 | |
| 2432 | if (avctx->err_recognition & AV_EF_EXPLODE && s2->er.error_count) |
| 2433 | return AVERROR_INVALIDDATA; |
| 2434 | |
| 2435 | return FFMAX(0, buf_ptr - buf - s2->parse_context.last_index); |
| 2436 | } |
| 2437 | |
| 2438 | input_size = buf_end - buf_ptr; |
| 2439 | |
| 2440 | if (avctx->debug & FF_DEBUG_STARTCODE) |
| 2441 | av_log(avctx, AV_LOG_DEBUG, "%3"PRIX32" at %"PTRDIFF_SPECIFIER" left %d\n", |
| 2442 | start_code, buf_ptr - buf, input_size); |
| 2443 | |
| 2444 | /* prepare data for next start code */ |
| 2445 | switch (start_code) { |
| 2446 | case SEQ_START_CODE: |
| 2447 | if (last_code == 0) { |
| 2448 | mpeg1_decode_sequence(avctx, buf_ptr, input_size); |
| 2449 | if (buf != avctx->extradata) |
| 2450 | s->sync = 1; |
| 2451 | } else { |
| 2452 | av_log(avctx, AV_LOG_ERROR, |
| 2453 | "ignoring SEQ_START_CODE after %X\n", last_code); |
| 2454 | if (avctx->err_recognition & AV_EF_EXPLODE) |
| 2455 | return AVERROR_INVALIDDATA; |
| 2456 | } |
| 2457 | break; |
| 2458 | |
| 2459 | case PICTURE_START_CODE: |
| 2460 | if (picture_start_code_seen && s2->picture_structure == PICT_FRAME) { |
| 2461 | /* If it's a frame picture, there can't be more than one picture header. |
| 2462 | Yet, it does happen and we need to handle it. */ |
| 2463 | av_log(avctx, AV_LOG_WARNING, "ignoring extra picture following a frame-picture\n"); |
| 2464 | break; |
| 2465 | } |
| 2466 | picture_start_code_seen = 1; |
| 2467 | |
| 2468 | if (s2->width <= 0 || s2->height <= 0) { |
| 2469 | av_log(avctx, AV_LOG_ERROR, "Invalid frame dimensions %dx%d.\n", |
| 2470 | s2->width, s2->height); |
| 2471 | return AVERROR_INVALIDDATA; |
| 2472 | } |
| 2473 | |
| 2474 | if (s->tmpgexs){ |
| 2475 | s2->intra_dc_precision= 3; |
| 2476 | s2->intra_matrix[0]= 1; |
| 2477 | } |
| 2478 | if (HAVE_THREADS && (avctx->active_thread_type & FF_THREAD_SLICE) && |
| 2479 | !avctx->hwaccel && s->slice_count) { |
| 2480 | int i; |
| 2481 | |
| 2482 | avctx->execute(avctx, slice_decode_thread, |
| 2483 | s2->thread_context, NULL, |
| 2484 | s->slice_count, sizeof(void *)); |
| 2485 | for (i = 0; i < s->slice_count; i++) |
| 2486 | s2->er.error_count += s2->thread_context[i]->er.error_count; |
| 2487 | s->slice_count = 0; |
| 2488 | } |
| 2489 | if (last_code == 0 || last_code == SLICE_MIN_START_CODE) { |
| 2490 | ret = mpeg_decode_postinit(avctx); |
| 2491 | if (ret < 0) { |
| 2492 | av_log(avctx, AV_LOG_ERROR, |
| 2493 | "mpeg_decode_postinit() failure\n"); |
| 2494 | return ret; |
| 2495 | } |
| 2496 | |
| 2497 | /* We have a complete image: we try to decompress it. */ |
| 2498 | if (mpeg1_decode_picture(avctx, buf_ptr, input_size) < 0) |
| 2499 | s2->pict_type = 0; |
| 2500 | s->first_slice = 1; |
| 2501 | last_code = PICTURE_START_CODE; |
| 2502 | } else { |
| 2503 | av_log(avctx, AV_LOG_ERROR, |
| 2504 | "ignoring pic after %X\n", last_code); |
| 2505 | if (avctx->err_recognition & AV_EF_EXPLODE) |
| 2506 | return AVERROR_INVALIDDATA; |
| 2507 | } |
| 2508 | break; |
| 2509 | case EXT_START_CODE: |
| 2510 | init_get_bits(&s2->gb, buf_ptr, input_size * 8); |
| 2511 | |
| 2512 | switch (get_bits(&s2->gb, 4)) { |
| 2513 | case 0x1: |
| 2514 | if (last_code == 0) { |
| 2515 | mpeg_decode_sequence_extension(s); |
| 2516 | } else { |
| 2517 | av_log(avctx, AV_LOG_ERROR, |
| 2518 | "ignoring seq ext after %X\n", last_code); |
| 2519 | if (avctx->err_recognition & AV_EF_EXPLODE) |
| 2520 | return AVERROR_INVALIDDATA; |
| 2521 | } |
| 2522 | break; |
| 2523 | case 0x2: |
| 2524 | mpeg_decode_sequence_display_extension(s); |
| 2525 | break; |
| 2526 | case 0x3: |
| 2527 | mpeg_decode_quant_matrix_extension(s2); |
| 2528 | break; |
| 2529 | case 0x7: |
| 2530 | mpeg_decode_picture_display_extension(s); |
| 2531 | break; |
| 2532 | case 0x8: |
| 2533 | if (last_code == PICTURE_START_CODE) { |
| 2534 | mpeg_decode_picture_coding_extension(s); |
| 2535 | } else { |
| 2536 | av_log(avctx, AV_LOG_ERROR, |
| 2537 | "ignoring pic cod ext after %X\n", last_code); |
| 2538 | if (avctx->err_recognition & AV_EF_EXPLODE) |
| 2539 | return AVERROR_INVALIDDATA; |
| 2540 | } |
| 2541 | break; |
| 2542 | } |
| 2543 | break; |
| 2544 | case USER_START_CODE: |
| 2545 | mpeg_decode_user_data(avctx, buf_ptr, input_size); |
| 2546 | break; |
| 2547 | case GOP_START_CODE: |
| 2548 | if (last_code == 0) { |
| 2549 | s2->first_field = 0; |
| 2550 | mpeg_decode_gop(avctx, buf_ptr, input_size); |
| 2551 | s->sync = 1; |
| 2552 | } else { |
| 2553 | av_log(avctx, AV_LOG_ERROR, |
| 2554 | "ignoring GOP_START_CODE after %X\n", last_code); |
| 2555 | if (avctx->err_recognition & AV_EF_EXPLODE) |
| 2556 | return AVERROR_INVALIDDATA; |
| 2557 | } |
| 2558 | break; |
| 2559 | default: |
| 2560 | if (start_code >= SLICE_MIN_START_CODE && |
| 2561 | start_code <= SLICE_MAX_START_CODE && last_code == PICTURE_START_CODE) { |
| 2562 | if (s2->progressive_sequence && !s2->progressive_frame) { |
| 2563 | s2->progressive_frame = 1; |
| 2564 | av_log(s2->avctx, AV_LOG_ERROR, |
| 2565 | "interlaced frame in progressive sequence, ignoring\n"); |
| 2566 | } |
| 2567 | |
| 2568 | if (s2->picture_structure == 0 || |
| 2569 | (s2->progressive_frame && s2->picture_structure != PICT_FRAME)) { |
| 2570 | av_log(s2->avctx, AV_LOG_ERROR, |
| 2571 | "picture_structure %d invalid, ignoring\n", |
| 2572 | s2->picture_structure); |
| 2573 | s2->picture_structure = PICT_FRAME; |
| 2574 | } |
| 2575 | |
| 2576 | if (s2->progressive_sequence && !s2->frame_pred_frame_dct) |
| 2577 | av_log(s2->avctx, AV_LOG_WARNING, "invalid frame_pred_frame_dct\n"); |
| 2578 | |
| 2579 | if (s2->picture_structure == PICT_FRAME) { |
| 2580 | s2->first_field = 0; |
| 2581 | s2->v_edge_pos = 16 * s2->mb_height; |
| 2582 | } else { |
| 2583 | s2->first_field ^= 1; |
| 2584 | s2->v_edge_pos = 8 * s2->mb_height; |
| 2585 | memset(s2->mbskip_table, 0, s2->mb_stride * s2->mb_height); |
| 2586 | } |
| 2587 | } |
| 2588 | if (start_code >= SLICE_MIN_START_CODE && |
| 2589 | start_code <= SLICE_MAX_START_CODE && last_code != 0) { |
| 2590 | const int field_pic = s2->picture_structure != PICT_FRAME; |
| 2591 | int mb_y = start_code - SLICE_MIN_START_CODE; |
| 2592 | last_code = SLICE_MIN_START_CODE; |
| 2593 | if (s2->codec_id != AV_CODEC_ID_MPEG1VIDEO && s2->mb_height > 2800/16) |
| 2594 | mb_y += (*buf_ptr&0xE0)<<2; |
| 2595 | |
| 2596 | mb_y <<= field_pic; |
| 2597 | if (s2->picture_structure == PICT_BOTTOM_FIELD) |
| 2598 | mb_y++; |
| 2599 | |
| 2600 | if (buf_end - buf_ptr < 2) { |
| 2601 | av_log(s2->avctx, AV_LOG_ERROR, "slice too small\n"); |
| 2602 | return AVERROR_INVALIDDATA; |
| 2603 | } |
| 2604 | |
| 2605 | if (mb_y >= s2->mb_height) { |
| 2606 | av_log(s2->avctx, AV_LOG_ERROR, |
| 2607 | "slice below image (%d >= %d)\n", mb_y, s2->mb_height); |
| 2608 | return -1; |
| 2609 | } |
| 2610 | |
| 2611 | if (!s2->last_picture_ptr) { |
| 2612 | /* Skip B-frames if we do not have reference frames and |
| 2613 | * GOP is not closed. */ |
| 2614 | if (s2->pict_type == AV_PICTURE_TYPE_B) { |
| 2615 | if (!s2->closed_gop) { |
| 2616 | skip_frame = 1; |
| 2617 | break; |
| 2618 | } |
| 2619 | } |
| 2620 | } |
| 2621 | if (s2->pict_type == AV_PICTURE_TYPE_I || (s2->flags2 & CODEC_FLAG2_SHOW_ALL)) |
| 2622 | s->sync = 1; |
| 2623 | if (!s2->next_picture_ptr) { |
| 2624 | /* Skip P-frames if we do not have a reference frame or |
| 2625 | * we have an invalid header. */ |
| 2626 | if (s2->pict_type == AV_PICTURE_TYPE_P && !s->sync) { |
| 2627 | skip_frame = 1; |
| 2628 | break; |
| 2629 | } |
| 2630 | } |
| 2631 | if ((avctx->skip_frame >= AVDISCARD_NONREF && |
| 2632 | s2->pict_type == AV_PICTURE_TYPE_B) || |
| 2633 | (avctx->skip_frame >= AVDISCARD_NONKEY && |
| 2634 | s2->pict_type != AV_PICTURE_TYPE_I) || |
| 2635 | avctx->skip_frame >= AVDISCARD_ALL) { |
| 2636 | skip_frame = 1; |
| 2637 | break; |
| 2638 | } |
| 2639 | |
| 2640 | if (!s->mpeg_enc_ctx_allocated) |
| 2641 | break; |
| 2642 | |
| 2643 | if (s2->codec_id == AV_CODEC_ID_MPEG2VIDEO) { |
| 2644 | if (mb_y < avctx->skip_top || |
| 2645 | mb_y >= s2->mb_height - avctx->skip_bottom) |
| 2646 | break; |
| 2647 | } |
| 2648 | |
| 2649 | if (!s2->pict_type) { |
| 2650 | av_log(avctx, AV_LOG_ERROR, "Missing picture start code\n"); |
| 2651 | if (avctx->err_recognition & AV_EF_EXPLODE) |
| 2652 | return AVERROR_INVALIDDATA; |
| 2653 | break; |
| 2654 | } |
| 2655 | |
| 2656 | if (s->first_slice) { |
| 2657 | skip_frame = 0; |
| 2658 | s->first_slice = 0; |
| 2659 | if (mpeg_field_start(s2, buf, buf_size) < 0) |
| 2660 | return -1; |
| 2661 | } |
| 2662 | if (!s2->current_picture_ptr) { |
| 2663 | av_log(avctx, AV_LOG_ERROR, |
| 2664 | "current_picture not initialized\n"); |
| 2665 | return AVERROR_INVALIDDATA; |
| 2666 | } |
| 2667 | |
| 2668 | if (uses_vdpau(avctx)) { |
| 2669 | s->slice_count++; |
| 2670 | break; |
| 2671 | } |
| 2672 | |
| 2673 | if (HAVE_THREADS && |
| 2674 | (avctx->active_thread_type & FF_THREAD_SLICE) && |
| 2675 | !avctx->hwaccel) { |
| 2676 | int threshold = (s2->mb_height * s->slice_count + |
| 2677 | s2->slice_context_count / 2) / |
| 2678 | s2->slice_context_count; |
| 2679 | av_assert0(avctx->thread_count > 1); |
| 2680 | if (threshold <= mb_y) { |
| 2681 | MpegEncContext *thread_context = s2->thread_context[s->slice_count]; |
| 2682 | |
| 2683 | thread_context->start_mb_y = mb_y; |
| 2684 | thread_context->end_mb_y = s2->mb_height; |
| 2685 | if (s->slice_count) { |
| 2686 | s2->thread_context[s->slice_count - 1]->end_mb_y = mb_y; |
| 2687 | ret = ff_update_duplicate_context(thread_context, s2); |
| 2688 | if (ret < 0) |
| 2689 | return ret; |
| 2690 | } |
| 2691 | init_get_bits(&thread_context->gb, buf_ptr, input_size * 8); |
| 2692 | s->slice_count++; |
| 2693 | } |
| 2694 | buf_ptr += 2; // FIXME add minimum number of bytes per slice |
| 2695 | } else { |
| 2696 | ret = mpeg_decode_slice(s2, mb_y, &buf_ptr, input_size); |
| 2697 | emms_c(); |
| 2698 | |
| 2699 | if (ret < 0) { |
| 2700 | if (avctx->err_recognition & AV_EF_EXPLODE) |
| 2701 | return ret; |
| 2702 | if (s2->resync_mb_x >= 0 && s2->resync_mb_y >= 0) |
| 2703 | ff_er_add_slice(&s2->er, s2->resync_mb_x, |
| 2704 | s2->resync_mb_y, s2->mb_x, s2->mb_y, |
| 2705 | ER_AC_ERROR | ER_DC_ERROR | ER_MV_ERROR); |
| 2706 | } else { |
| 2707 | ff_er_add_slice(&s2->er, s2->resync_mb_x, |
| 2708 | s2->resync_mb_y, s2->mb_x - 1, s2->mb_y, |
| 2709 | ER_AC_END | ER_DC_END | ER_MV_END); |
| 2710 | } |
| 2711 | } |
| 2712 | } |
| 2713 | break; |
| 2714 | } |
| 2715 | } |
| 2716 | } |
| 2717 | |
| 2718 | static int mpeg_decode_frame(AVCodecContext *avctx, void *data, |
| 2719 | int *got_output, AVPacket *avpkt) |
| 2720 | { |
| 2721 | const uint8_t *buf = avpkt->data; |
| 2722 | int ret; |
| 2723 | int buf_size = avpkt->size; |
| 2724 | Mpeg1Context *s = avctx->priv_data; |
| 2725 | AVFrame *picture = data; |
| 2726 | MpegEncContext *s2 = &s->mpeg_enc_ctx; |
| 2727 | |
| 2728 | if (buf_size == 0 || (buf_size == 4 && AV_RB32(buf) == SEQ_END_CODE)) { |
| 2729 | /* special case for last picture */ |
| 2730 | if (s2->low_delay == 0 && s2->next_picture_ptr) { |
| 2731 | int ret = av_frame_ref(picture, s2->next_picture_ptr->f); |
| 2732 | if (ret < 0) |
| 2733 | return ret; |
| 2734 | |
| 2735 | s2->next_picture_ptr = NULL; |
| 2736 | |
| 2737 | *got_output = 1; |
| 2738 | } |
| 2739 | return buf_size; |
| 2740 | } |
| 2741 | |
| 2742 | if (s2->flags & CODEC_FLAG_TRUNCATED) { |
| 2743 | int next = ff_mpeg1_find_frame_end(&s2->parse_context, buf, |
| 2744 | buf_size, NULL); |
| 2745 | |
| 2746 | if (ff_combine_frame(&s2->parse_context, next, |
| 2747 | (const uint8_t **) &buf, &buf_size) < 0) |
| 2748 | return buf_size; |
| 2749 | } |
| 2750 | |
| 2751 | s2->codec_tag = avpriv_toupper4(avctx->codec_tag); |
| 2752 | if (s->mpeg_enc_ctx_allocated == 0 && ( s2->codec_tag == AV_RL32("VCR2") |
| 2753 | || s2->codec_tag == AV_RL32("BW10") |
| 2754 | )) |
| 2755 | vcr2_init_sequence(avctx); |
| 2756 | |
| 2757 | s->slice_count = 0; |
| 2758 | |
| 2759 | if (avctx->extradata && !s->extradata_decoded) { |
| 2760 | ret = decode_chunks(avctx, picture, got_output, |
| 2761 | avctx->extradata, avctx->extradata_size); |
| 2762 | if (*got_output) { |
| 2763 | av_log(avctx, AV_LOG_ERROR, "picture in extradata\n"); |
| 2764 | *got_output = 0; |
| 2765 | } |
| 2766 | s->extradata_decoded = 1; |
| 2767 | if (ret < 0 && (avctx->err_recognition & AV_EF_EXPLODE)) { |
| 2768 | s2->current_picture_ptr = NULL; |
| 2769 | return ret; |
| 2770 | } |
| 2771 | } |
| 2772 | |
| 2773 | ret = decode_chunks(avctx, picture, got_output, buf, buf_size); |
| 2774 | if (ret<0 || *got_output) |
| 2775 | s2->current_picture_ptr = NULL; |
| 2776 | |
| 2777 | return ret; |
| 2778 | } |
| 2779 | |
| 2780 | static void flush(AVCodecContext *avctx) |
| 2781 | { |
| 2782 | Mpeg1Context *s = avctx->priv_data; |
| 2783 | |
| 2784 | s->sync = 0; |
| 2785 | |
| 2786 | ff_mpeg_flush(avctx); |
| 2787 | } |
| 2788 | |
| 2789 | static av_cold int mpeg_decode_end(AVCodecContext *avctx) |
| 2790 | { |
| 2791 | Mpeg1Context *s = avctx->priv_data; |
| 2792 | |
| 2793 | if (s->mpeg_enc_ctx_allocated) |
| 2794 | ff_mpv_common_end(&s->mpeg_enc_ctx); |
| 2795 | av_freep(&s->a53_caption); |
| 2796 | return 0; |
| 2797 | } |
| 2798 | |
| 2799 | static const AVProfile mpeg2_video_profiles[] = { |
| 2800 | { FF_PROFILE_MPEG2_422, "4:2:2" }, |
| 2801 | { FF_PROFILE_MPEG2_HIGH, "High" }, |
| 2802 | { FF_PROFILE_MPEG2_SS, "Spatially Scalable" }, |
| 2803 | { FF_PROFILE_MPEG2_SNR_SCALABLE, "SNR Scalable" }, |
| 2804 | { FF_PROFILE_MPEG2_MAIN, "Main" }, |
| 2805 | { FF_PROFILE_MPEG2_SIMPLE, "Simple" }, |
| 2806 | { FF_PROFILE_RESERVED, "Reserved" }, |
| 2807 | { FF_PROFILE_RESERVED, "Reserved" }, |
| 2808 | { FF_PROFILE_UNKNOWN }, |
| 2809 | }; |
| 2810 | |
| 2811 | AVCodec ff_mpeg1video_decoder = { |
| 2812 | .name = "mpeg1video", |
| 2813 | .long_name = NULL_IF_CONFIG_SMALL("MPEG-1 video"), |
| 2814 | .type = AVMEDIA_TYPE_VIDEO, |
| 2815 | .id = AV_CODEC_ID_MPEG1VIDEO, |
| 2816 | .priv_data_size = sizeof(Mpeg1Context), |
| 2817 | .init = mpeg_decode_init, |
| 2818 | .close = mpeg_decode_end, |
| 2819 | .decode = mpeg_decode_frame, |
| 2820 | .capabilities = CODEC_CAP_DRAW_HORIZ_BAND | CODEC_CAP_DR1 | |
| 2821 | CODEC_CAP_TRUNCATED | CODEC_CAP_DELAY | |
| 2822 | CODEC_CAP_SLICE_THREADS, |
| 2823 | .flush = flush, |
| 2824 | .max_lowres = 3, |
| 2825 | .update_thread_context = ONLY_IF_THREADS_ENABLED(mpeg_decode_update_thread_context) |
| 2826 | }; |
| 2827 | |
| 2828 | AVCodec ff_mpeg2video_decoder = { |
| 2829 | .name = "mpeg2video", |
| 2830 | .long_name = NULL_IF_CONFIG_SMALL("MPEG-2 video"), |
| 2831 | .type = AVMEDIA_TYPE_VIDEO, |
| 2832 | .id = AV_CODEC_ID_MPEG2VIDEO, |
| 2833 | .priv_data_size = sizeof(Mpeg1Context), |
| 2834 | .init = mpeg_decode_init, |
| 2835 | .close = mpeg_decode_end, |
| 2836 | .decode = mpeg_decode_frame, |
| 2837 | .capabilities = CODEC_CAP_DRAW_HORIZ_BAND | CODEC_CAP_DR1 | |
| 2838 | CODEC_CAP_TRUNCATED | CODEC_CAP_DELAY | |
| 2839 | CODEC_CAP_SLICE_THREADS, |
| 2840 | .flush = flush, |
| 2841 | .max_lowres = 3, |
| 2842 | .profiles = NULL_IF_CONFIG_SMALL(mpeg2_video_profiles), |
| 2843 | }; |
| 2844 | |
| 2845 | //legacy decoder |
| 2846 | AVCodec ff_mpegvideo_decoder = { |
| 2847 | .name = "mpegvideo", |
| 2848 | .long_name = NULL_IF_CONFIG_SMALL("MPEG-1 video"), |
| 2849 | .type = AVMEDIA_TYPE_VIDEO, |
| 2850 | .id = AV_CODEC_ID_MPEG2VIDEO, |
| 2851 | .priv_data_size = sizeof(Mpeg1Context), |
| 2852 | .init = mpeg_decode_init, |
| 2853 | .close = mpeg_decode_end, |
| 2854 | .decode = mpeg_decode_frame, |
| 2855 | .capabilities = CODEC_CAP_DRAW_HORIZ_BAND | CODEC_CAP_DR1 | CODEC_CAP_TRUNCATED | CODEC_CAP_DELAY | CODEC_CAP_SLICE_THREADS, |
| 2856 | .flush = flush, |
| 2857 | .max_lowres = 3, |
| 2858 | }; |
| 2859 | |
| 2860 | #if FF_API_XVMC |
| 2861 | #if CONFIG_MPEG_XVMC_DECODER |
| 2862 | static av_cold int mpeg_mc_decode_init(AVCodecContext *avctx) |
| 2863 | { |
| 2864 | if (avctx->active_thread_type & FF_THREAD_SLICE) |
| 2865 | return -1; |
| 2866 | if (!(avctx->slice_flags & SLICE_FLAG_CODED_ORDER)) |
| 2867 | return -1; |
| 2868 | if (!(avctx->slice_flags & SLICE_FLAG_ALLOW_FIELD)) { |
| 2869 | av_dlog(avctx, "mpeg12.c: XvMC decoder will work better if SLICE_FLAG_ALLOW_FIELD is set\n"); |
| 2870 | } |
| 2871 | mpeg_decode_init(avctx); |
| 2872 | |
| 2873 | avctx->pix_fmt = AV_PIX_FMT_XVMC_MPEG2_IDCT; |
| 2874 | avctx->xvmc_acceleration = 2; // 2 - the blocks are packed! |
| 2875 | |
| 2876 | return 0; |
| 2877 | } |
| 2878 | |
| 2879 | AVCodec ff_mpeg_xvmc_decoder = { |
| 2880 | .name = "mpegvideo_xvmc", |
| 2881 | .long_name = NULL_IF_CONFIG_SMALL("MPEG-1/2 video XvMC (X-Video Motion Compensation)"), |
| 2882 | .type = AVMEDIA_TYPE_VIDEO, |
| 2883 | .id = AV_CODEC_ID_MPEG2VIDEO_XVMC, |
| 2884 | .priv_data_size = sizeof(Mpeg1Context), |
| 2885 | .init = mpeg_mc_decode_init, |
| 2886 | .close = mpeg_decode_end, |
| 2887 | .decode = mpeg_decode_frame, |
| 2888 | .capabilities = CODEC_CAP_DRAW_HORIZ_BAND | CODEC_CAP_DR1 | |
| 2889 | CODEC_CAP_TRUNCATED | CODEC_CAP_HWACCEL | CODEC_CAP_DELAY, |
| 2890 | .flush = flush, |
| 2891 | }; |
| 2892 | |
| 2893 | #endif |
| 2894 | #endif /* FF_API_XVMC */ |
| 2895 | |
| 2896 | #if CONFIG_MPEG_VDPAU_DECODER |
| 2897 | AVCodec ff_mpeg_vdpau_decoder = { |
| 2898 | .name = "mpegvideo_vdpau", |
| 2899 | .long_name = NULL_IF_CONFIG_SMALL("MPEG-1/2 video (VDPAU acceleration)"), |
| 2900 | .type = AVMEDIA_TYPE_VIDEO, |
| 2901 | .id = AV_CODEC_ID_MPEG2VIDEO, |
| 2902 | .priv_data_size = sizeof(Mpeg1Context), |
| 2903 | .init = mpeg_decode_init, |
| 2904 | .close = mpeg_decode_end, |
| 2905 | .decode = mpeg_decode_frame, |
| 2906 | .capabilities = CODEC_CAP_DR1 | CODEC_CAP_TRUNCATED | |
| 2907 | CODEC_CAP_HWACCEL_VDPAU | CODEC_CAP_DELAY, |
| 2908 | .flush = flush, |
| 2909 | }; |
| 2910 | #endif |
| 2911 | |
| 2912 | #if CONFIG_MPEG1_VDPAU_DECODER |
| 2913 | AVCodec ff_mpeg1_vdpau_decoder = { |
| 2914 | .name = "mpeg1video_vdpau", |
| 2915 | .long_name = NULL_IF_CONFIG_SMALL("MPEG-1 video (VDPAU acceleration)"), |
| 2916 | .type = AVMEDIA_TYPE_VIDEO, |
| 2917 | .id = AV_CODEC_ID_MPEG1VIDEO, |
| 2918 | .priv_data_size = sizeof(Mpeg1Context), |
| 2919 | .init = mpeg_decode_init, |
| 2920 | .close = mpeg_decode_end, |
| 2921 | .decode = mpeg_decode_frame, |
| 2922 | .capabilities = CODEC_CAP_DR1 | CODEC_CAP_TRUNCATED | |
| 2923 | CODEC_CAP_HWACCEL_VDPAU | CODEC_CAP_DELAY, |
| 2924 | .flush = flush, |
| 2925 | }; |
| 2926 | #endif |