1/* 2 * VC-1 and WMV3 decoder common code 3 * Copyright (c) 2006-2007 Konstantin Shishkov 4 * Partly based on vc9.c (c) 2005 Anonymous, Alex Beregszaszi, Michael Niedermayer 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 * VC-1 and WMV3 decoder common code 26 * 27 */ 28#include "internal.h" 29#include "dsputil.h" 30#include "avcodec.h" 31#include "mpegvideo.h" 32#include "vc1.h" 33#include "vc1data.h" 34#include "msmpeg4data.h" 35#include "unary.h" 36#include "simple_idct.h" 37 38#undef NDEBUG 39#include <assert.h> 40 41/***********************************************************************/ 42/** 43 * @defgroup vc1bitplane VC-1 Bitplane decoding 44 * @see 8.7, p56 45 * @{ 46 */ 47 48/** 49 * Imode types 50 * @{ 51 */ 52enum Imode { 53 IMODE_RAW, 54 IMODE_NORM2, 55 IMODE_DIFF2, 56 IMODE_NORM6, 57 IMODE_DIFF6, 58 IMODE_ROWSKIP, 59 IMODE_COLSKIP 60}; 61/** @} */ //imode defines 62 63/** Decode rows by checking if they are skipped 64 * @param plane Buffer to store decoded bits 65 * @param[in] width Width of this buffer 66 * @param[in] height Height of this buffer 67 * @param[in] stride of this buffer 68 */ 69static void decode_rowskip(uint8_t* plane, int width, int height, int stride, GetBitContext *gb){ 70 int x, y; 71 72 for (y=0; y<height; y++){ 73 if (!get_bits1(gb)) //rowskip 74 memset(plane, 0, width); 75 else 76 for (x=0; x<width; x++) 77 plane[x] = get_bits1(gb); 78 plane += stride; 79 } 80} 81 82/** Decode columns by checking if they are skipped 83 * @param plane Buffer to store decoded bits 84 * @param[in] width Width of this buffer 85 * @param[in] height Height of this buffer 86 * @param[in] stride of this buffer 87 * @todo FIXME: Optimize 88 */ 89static void decode_colskip(uint8_t* plane, int width, int height, int stride, GetBitContext *gb){ 90 int x, y; 91 92 for (x=0; x<width; x++){ 93 if (!get_bits1(gb)) //colskip 94 for (y=0; y<height; y++) 95 plane[y*stride] = 0; 96 else 97 for (y=0; y<height; y++) 98 plane[y*stride] = get_bits1(gb); 99 plane ++; 100 } 101} 102 103/** Decode a bitplane's bits 104 * @param data bitplane where to store the decode bits 105 * @param[out] raw_flag pointer to the flag indicating that this bitplane is not coded explicitly 106 * @param v VC-1 context for bit reading and logging 107 * @return Status 108 * @todo FIXME: Optimize 109 */ 110static int bitplane_decoding(uint8_t* data, int *raw_flag, VC1Context *v) 111{ 112 GetBitContext *gb = &v->s.gb; 113 114 int imode, x, y, code, offset; 115 uint8_t invert, *planep = data; 116 int width, height, stride; 117 118 width = v->s.mb_width; 119 height = v->s.mb_height; 120 stride = v->s.mb_stride; 121 invert = get_bits1(gb); 122 imode = get_vlc2(gb, ff_vc1_imode_vlc.table, VC1_IMODE_VLC_BITS, 1); 123 124 *raw_flag = 0; 125 switch (imode) 126 { 127 case IMODE_RAW: 128 //Data is actually read in the MB layer (same for all tests == "raw") 129 *raw_flag = 1; //invert ignored 130 return invert; 131 case IMODE_DIFF2: 132 case IMODE_NORM2: 133 if ((height * width) & 1) 134 { 135 *planep++ = get_bits1(gb); 136 offset = 1; 137 } 138 else offset = 0; 139 // decode bitplane as one long line 140 for (y = offset; y < height * width; y += 2) { 141 code = get_vlc2(gb, ff_vc1_norm2_vlc.table, VC1_NORM2_VLC_BITS, 1); 142 *planep++ = code & 1; 143 offset++; 144 if(offset == width) { 145 offset = 0; 146 planep += stride - width; 147 } 148 *planep++ = code >> 1; 149 offset++; 150 if(offset == width) { 151 offset = 0; 152 planep += stride - width; 153 } 154 } 155 break; 156 case IMODE_DIFF6: 157 case IMODE_NORM6: 158 if(!(height % 3) && (width % 3)) { // use 2x3 decoding 159 for(y = 0; y < height; y+= 3) { 160 for(x = width & 1; x < width; x += 2) { 161 code = get_vlc2(gb, ff_vc1_norm6_vlc.table, VC1_NORM6_VLC_BITS, 2); 162 if(code < 0){ 163 av_log(v->s.avctx, AV_LOG_DEBUG, "invalid NORM-6 VLC\n"); 164 return -1; 165 } 166 planep[x + 0] = (code >> 0) & 1; 167 planep[x + 1] = (code >> 1) & 1; 168 planep[x + 0 + stride] = (code >> 2) & 1; 169 planep[x + 1 + stride] = (code >> 3) & 1; 170 planep[x + 0 + stride * 2] = (code >> 4) & 1; 171 planep[x + 1 + stride * 2] = (code >> 5) & 1; 172 } 173 planep += stride * 3; 174 } 175 if(width & 1) decode_colskip(data, 1, height, stride, &v->s.gb); 176 } else { // 3x2 177 planep += (height & 1) * stride; 178 for(y = height & 1; y < height; y += 2) { 179 for(x = width % 3; x < width; x += 3) { 180 code = get_vlc2(gb, ff_vc1_norm6_vlc.table, VC1_NORM6_VLC_BITS, 2); 181 if(code < 0){ 182 av_log(v->s.avctx, AV_LOG_DEBUG, "invalid NORM-6 VLC\n"); 183 return -1; 184 } 185 planep[x + 0] = (code >> 0) & 1; 186 planep[x + 1] = (code >> 1) & 1; 187 planep[x + 2] = (code >> 2) & 1; 188 planep[x + 0 + stride] = (code >> 3) & 1; 189 planep[x + 1 + stride] = (code >> 4) & 1; 190 planep[x + 2 + stride] = (code >> 5) & 1; 191 } 192 planep += stride * 2; 193 } 194 x = width % 3; 195 if(x) decode_colskip(data , x, height , stride, &v->s.gb); 196 if(height & 1) decode_rowskip(data+x, width - x, 1, stride, &v->s.gb); 197 } 198 break; 199 case IMODE_ROWSKIP: 200 decode_rowskip(data, width, height, stride, &v->s.gb); 201 break; 202 case IMODE_COLSKIP: 203 decode_colskip(data, width, height, stride, &v->s.gb); 204 break; 205 default: break; 206 } 207 208 /* Applying diff operator */ 209 if (imode == IMODE_DIFF2 || imode == IMODE_DIFF6) 210 { 211 planep = data; 212 planep[0] ^= invert; 213 for (x=1; x<width; x++) 214 planep[x] ^= planep[x-1]; 215 for (y=1; y<height; y++) 216 { 217 planep += stride; 218 planep[0] ^= planep[-stride]; 219 for (x=1; x<width; x++) 220 { 221 if (planep[x-1] != planep[x-stride]) planep[x] ^= invert; 222 else planep[x] ^= planep[x-1]; 223 } 224 } 225 } 226 else if (invert) 227 { 228 planep = data; 229 for (x=0; x<stride*height; x++) planep[x] = !planep[x]; //FIXME stride 230 } 231 return (imode<<1) + invert; 232} 233 234/** @} */ //Bitplane group 235 236/***********************************************************************/ 237/** VOP Dquant decoding 238 * @param v VC-1 Context 239 */ 240static int vop_dquant_decoding(VC1Context *v) 241{ 242 GetBitContext *gb = &v->s.gb; 243 int pqdiff; 244 245 //variable size 246 if (v->dquant == 2) 247 { 248 pqdiff = get_bits(gb, 3); 249 if (pqdiff == 7) v->altpq = get_bits(gb, 5); 250 else v->altpq = v->pq + pqdiff + 1; 251 } 252 else 253 { 254 v->dquantfrm = get_bits1(gb); 255 if ( v->dquantfrm ) 256 { 257 v->dqprofile = get_bits(gb, 2); 258 switch (v->dqprofile) 259 { 260 case DQPROFILE_SINGLE_EDGE: 261 case DQPROFILE_DOUBLE_EDGES: 262 v->dqsbedge = get_bits(gb, 2); 263 break; 264 case DQPROFILE_ALL_MBS: 265 v->dqbilevel = get_bits1(gb); 266 if(!v->dqbilevel) 267 v->halfpq = 0; 268 default: break; //Forbidden ? 269 } 270 if (v->dqbilevel || v->dqprofile != DQPROFILE_ALL_MBS) 271 { 272 pqdiff = get_bits(gb, 3); 273 if (pqdiff == 7) v->altpq = get_bits(gb, 5); 274 else v->altpq = v->pq + pqdiff + 1; 275 } 276 } 277 } 278 return 0; 279} 280 281static int decode_sequence_header_adv(VC1Context *v, GetBitContext *gb); 282 283/** 284 * Decode Simple/Main Profiles sequence header 285 * @see Figure 7-8, p16-17 286 * @param avctx Codec context 287 * @param gb GetBit context initialized from Codec context extra_data 288 * @return Status 289 */ 290int vc1_decode_sequence_header(AVCodecContext *avctx, VC1Context *v, GetBitContext *gb) 291{ 292 av_log(avctx, AV_LOG_DEBUG, "Header: %0X\n", show_bits(gb, 32)); 293 v->profile = get_bits(gb, 2); 294 if (v->profile == PROFILE_COMPLEX) 295 { 296 av_log(avctx, AV_LOG_ERROR, "WMV3 Complex Profile is not fully supported\n"); 297 } 298 299 if (v->profile == PROFILE_ADVANCED) 300 { 301 v->zz_8x4 = ff_vc1_adv_progressive_8x4_zz; 302 v->zz_4x8 = ff_vc1_adv_progressive_4x8_zz; 303 return decode_sequence_header_adv(v, gb); 304 } 305 else 306 { 307 v->zz_8x4 = wmv2_scantableA; 308 v->zz_4x8 = wmv2_scantableB; 309 v->res_sm = get_bits(gb, 2); //reserved 310 if (v->res_sm) 311 { 312 av_log(avctx, AV_LOG_ERROR, 313 "Reserved RES_SM=%i is forbidden\n", v->res_sm); 314 return -1; 315 } 316 } 317 318 // (fps-2)/4 (->30) 319 v->frmrtq_postproc = get_bits(gb, 3); //common 320 // (bitrate-32kbps)/64kbps 321 v->bitrtq_postproc = get_bits(gb, 5); //common 322 v->s.loop_filter = get_bits1(gb); //common 323 if(v->s.loop_filter == 1 && v->profile == PROFILE_SIMPLE) 324 { 325 av_log(avctx, AV_LOG_ERROR, 326 "LOOPFILTER shall not be enabled in Simple Profile\n"); 327 } 328 if(v->s.avctx->skip_loop_filter >= AVDISCARD_ALL) 329 v->s.loop_filter = 0; 330 331 v->res_x8 = get_bits1(gb); //reserved 332 v->multires = get_bits1(gb); 333 v->res_fasttx = get_bits1(gb); 334 if (!v->res_fasttx) 335 { 336 v->s.dsp.vc1_inv_trans_8x8 = ff_simple_idct; 337 v->s.dsp.vc1_inv_trans_8x4 = ff_simple_idct84_add; 338 v->s.dsp.vc1_inv_trans_4x8 = ff_simple_idct48_add; 339 v->s.dsp.vc1_inv_trans_4x4 = ff_simple_idct44_add; 340 v->s.dsp.vc1_inv_trans_8x8_dc = ff_simple_idct_add; 341 v->s.dsp.vc1_inv_trans_8x4_dc = ff_simple_idct84_add; 342 v->s.dsp.vc1_inv_trans_4x8_dc = ff_simple_idct48_add; 343 v->s.dsp.vc1_inv_trans_4x4_dc = ff_simple_idct44_add; 344 } 345 346 v->fastuvmc = get_bits1(gb); //common 347 if (!v->profile && !v->fastuvmc) 348 { 349 av_log(avctx, AV_LOG_ERROR, 350 "FASTUVMC unavailable in Simple Profile\n"); 351 return -1; 352 } 353 v->extended_mv = get_bits1(gb); //common 354 if (!v->profile && v->extended_mv) 355 { 356 av_log(avctx, AV_LOG_ERROR, 357 "Extended MVs unavailable in Simple Profile\n"); 358 return -1; 359 } 360 v->dquant = get_bits(gb, 2); //common 361 v->vstransform = get_bits1(gb); //common 362 363 v->res_transtab = get_bits1(gb); 364 if (v->res_transtab) 365 { 366 av_log(avctx, AV_LOG_ERROR, 367 "1 for reserved RES_TRANSTAB is forbidden\n"); 368 return -1; 369 } 370 371 v->overlap = get_bits1(gb); //common 372 373 v->s.resync_marker = get_bits1(gb); 374 v->rangered = get_bits1(gb); 375 if (v->rangered && v->profile == PROFILE_SIMPLE) 376 { 377 av_log(avctx, AV_LOG_INFO, 378 "RANGERED should be set to 0 in Simple Profile\n"); 379 } 380 381 v->s.max_b_frames = avctx->max_b_frames = get_bits(gb, 3); //common 382 v->quantizer_mode = get_bits(gb, 2); //common 383 384 v->finterpflag = get_bits1(gb); //common 385 v->res_rtm_flag = get_bits1(gb); //reserved 386 if (!v->res_rtm_flag) 387 { 388// av_log(avctx, AV_LOG_ERROR, 389// "0 for reserved RES_RTM_FLAG is forbidden\n"); 390 av_log(avctx, AV_LOG_ERROR, 391 "Old WMV3 version detected, only I-frames will be decoded\n"); 392 //return -1; 393 } 394 //TODO: figure out what they mean (always 0x402F) 395 if(!v->res_fasttx) skip_bits(gb, 16); 396 av_log(avctx, AV_LOG_DEBUG, 397 "Profile %i:\nfrmrtq_postproc=%i, bitrtq_postproc=%i\n" 398 "LoopFilter=%i, MultiRes=%i, FastUVMC=%i, Extended MV=%i\n" 399 "Rangered=%i, VSTransform=%i, Overlap=%i, SyncMarker=%i\n" 400 "DQuant=%i, Quantizer mode=%i, Max B frames=%i\n", 401 v->profile, v->frmrtq_postproc, v->bitrtq_postproc, 402 v->s.loop_filter, v->multires, v->fastuvmc, v->extended_mv, 403 v->rangered, v->vstransform, v->overlap, v->s.resync_marker, 404 v->dquant, v->quantizer_mode, avctx->max_b_frames 405 ); 406 return 0; 407} 408 409static int decode_sequence_header_adv(VC1Context *v, GetBitContext *gb) 410{ 411 v->res_rtm_flag = 1; 412 v->level = get_bits(gb, 3); 413 if(v->level >= 5) 414 { 415 av_log(v->s.avctx, AV_LOG_ERROR, "Reserved LEVEL %i\n",v->level); 416 } 417 v->chromaformat = get_bits(gb, 2); 418 if (v->chromaformat != 1) 419 { 420 av_log(v->s.avctx, AV_LOG_ERROR, 421 "Only 4:2:0 chroma format supported\n"); 422 return -1; 423 } 424 425 // (fps-2)/4 (->30) 426 v->frmrtq_postproc = get_bits(gb, 3); //common 427 // (bitrate-32kbps)/64kbps 428 v->bitrtq_postproc = get_bits(gb, 5); //common 429 v->postprocflag = get_bits1(gb); //common 430 431 v->s.avctx->coded_width = (get_bits(gb, 12) + 1) << 1; 432 v->s.avctx->coded_height = (get_bits(gb, 12) + 1) << 1; 433 v->s.avctx->width = v->s.avctx->coded_width; 434 v->s.avctx->height = v->s.avctx->coded_height; 435 v->broadcast = get_bits1(gb); 436 v->interlace = get_bits1(gb); 437 v->tfcntrflag = get_bits1(gb); 438 v->finterpflag = get_bits1(gb); 439 skip_bits1(gb); // reserved 440 441 v->s.h_edge_pos = v->s.avctx->coded_width; 442 v->s.v_edge_pos = v->s.avctx->coded_height; 443 444 av_log(v->s.avctx, AV_LOG_DEBUG, 445 "Advanced Profile level %i:\nfrmrtq_postproc=%i, bitrtq_postproc=%i\n" 446 "LoopFilter=%i, ChromaFormat=%i, Pulldown=%i, Interlace: %i\n" 447 "TFCTRflag=%i, FINTERPflag=%i\n", 448 v->level, v->frmrtq_postproc, v->bitrtq_postproc, 449 v->s.loop_filter, v->chromaformat, v->broadcast, v->interlace, 450 v->tfcntrflag, v->finterpflag 451 ); 452 453 v->psf = get_bits1(gb); 454 if(v->psf) { //PsF, 6.1.13 455 av_log(v->s.avctx, AV_LOG_ERROR, "Progressive Segmented Frame mode: not supported (yet)\n"); 456 return -1; 457 } 458 v->s.max_b_frames = v->s.avctx->max_b_frames = 7; 459 if(get_bits1(gb)) { //Display Info - decoding is not affected by it 460 int w, h, ar = 0; 461 av_log(v->s.avctx, AV_LOG_DEBUG, "Display extended info:\n"); 462 v->s.avctx->width = w = get_bits(gb, 14) + 1; 463 v->s.avctx->height = h = get_bits(gb, 14) + 1; 464 av_log(v->s.avctx, AV_LOG_DEBUG, "Display dimensions: %ix%i\n", w, h); 465 if(get_bits1(gb)) 466 ar = get_bits(gb, 4); 467 if(ar && ar < 14){ 468 v->s.avctx->sample_aspect_ratio = ff_vc1_pixel_aspect[ar]; 469 }else if(ar == 15){ 470 w = get_bits(gb, 8); 471 h = get_bits(gb, 8); 472 v->s.avctx->sample_aspect_ratio = (AVRational){w, h}; 473 } 474 av_log(v->s.avctx, AV_LOG_DEBUG, "Aspect: %i:%i\n", v->s.avctx->sample_aspect_ratio.num, v->s.avctx->sample_aspect_ratio.den); 475 476 if(get_bits1(gb)){ //framerate stuff 477 if(get_bits1(gb)) { 478 v->s.avctx->time_base.num = 32; 479 v->s.avctx->time_base.den = get_bits(gb, 16) + 1; 480 } else { 481 int nr, dr; 482 nr = get_bits(gb, 8); 483 dr = get_bits(gb, 4); 484 if(nr && nr < 8 && dr && dr < 3){ 485 v->s.avctx->time_base.num = ff_vc1_fps_dr[dr - 1]; 486 v->s.avctx->time_base.den = ff_vc1_fps_nr[nr - 1] * 1000; 487 } 488 } 489 } 490 491 if(get_bits1(gb)){ 492 v->color_prim = get_bits(gb, 8); 493 v->transfer_char = get_bits(gb, 8); 494 v->matrix_coef = get_bits(gb, 8); 495 } 496 } 497 498 v->hrd_param_flag = get_bits1(gb); 499 if(v->hrd_param_flag) { 500 int i; 501 v->hrd_num_leaky_buckets = get_bits(gb, 5); 502 skip_bits(gb, 4); //bitrate exponent 503 skip_bits(gb, 4); //buffer size exponent 504 for(i = 0; i < v->hrd_num_leaky_buckets; i++) { 505 skip_bits(gb, 16); //hrd_rate[n] 506 skip_bits(gb, 16); //hrd_buffer[n] 507 } 508 } 509 return 0; 510} 511 512int vc1_decode_entry_point(AVCodecContext *avctx, VC1Context *v, GetBitContext *gb) 513{ 514 int i; 515 516 av_log(avctx, AV_LOG_DEBUG, "Entry point: %08X\n", show_bits_long(gb, 32)); 517 v->broken_link = get_bits1(gb); 518 v->closed_entry = get_bits1(gb); 519 v->panscanflag = get_bits1(gb); 520 v->refdist_flag = get_bits1(gb); 521 v->s.loop_filter = get_bits1(gb); 522 v->fastuvmc = get_bits1(gb); 523 v->extended_mv = get_bits1(gb); 524 v->dquant = get_bits(gb, 2); 525 v->vstransform = get_bits1(gb); 526 v->overlap = get_bits1(gb); 527 v->quantizer_mode = get_bits(gb, 2); 528 529 if(v->hrd_param_flag){ 530 for(i = 0; i < v->hrd_num_leaky_buckets; i++) { 531 skip_bits(gb, 8); //hrd_full[n] 532 } 533 } 534 535 if(get_bits1(gb)){ 536 avctx->coded_width = (get_bits(gb, 12)+1)<<1; 537 avctx->coded_height = (get_bits(gb, 12)+1)<<1; 538 } 539 if(v->extended_mv) 540 v->extended_dmv = get_bits1(gb); 541 if((v->range_mapy_flag = get_bits1(gb))) { 542 av_log(avctx, AV_LOG_ERROR, "Luma scaling is not supported, expect wrong picture\n"); 543 v->range_mapy = get_bits(gb, 3); 544 } 545 if((v->range_mapuv_flag = get_bits1(gb))) { 546 av_log(avctx, AV_LOG_ERROR, "Chroma scaling is not supported, expect wrong picture\n"); 547 v->range_mapuv = get_bits(gb, 3); 548 } 549 550 av_log(avctx, AV_LOG_DEBUG, "Entry point info:\n" 551 "BrokenLink=%i, ClosedEntry=%i, PanscanFlag=%i\n" 552 "RefDist=%i, Postproc=%i, FastUVMC=%i, ExtMV=%i\n" 553 "DQuant=%i, VSTransform=%i, Overlap=%i, Qmode=%i\n", 554 v->broken_link, v->closed_entry, v->panscanflag, v->refdist_flag, v->s.loop_filter, 555 v->fastuvmc, v->extended_mv, v->dquant, v->vstransform, v->overlap, v->quantizer_mode); 556 557 return 0; 558} 559 560int vc1_parse_frame_header(VC1Context *v, GetBitContext* gb) 561{ 562 int pqindex, lowquant, status; 563 564 if(v->finterpflag) v->interpfrm = get_bits1(gb); 565 skip_bits(gb, 2); //framecnt unused 566 v->rangeredfrm = 0; 567 if (v->rangered) v->rangeredfrm = get_bits1(gb); 568 v->s.pict_type = get_bits1(gb); 569 if (v->s.avctx->max_b_frames) { 570 if (!v->s.pict_type) { 571 if (get_bits1(gb)) v->s.pict_type = FF_I_TYPE; 572 else v->s.pict_type = FF_B_TYPE; 573 } else v->s.pict_type = FF_P_TYPE; 574 } else v->s.pict_type = v->s.pict_type ? FF_P_TYPE : FF_I_TYPE; 575 576 v->bi_type = 0; 577 if(v->s.pict_type == FF_B_TYPE) { 578 v->bfraction_lut_index = get_vlc2(gb, ff_vc1_bfraction_vlc.table, VC1_BFRACTION_VLC_BITS, 1); 579 v->bfraction = ff_vc1_bfraction_lut[v->bfraction_lut_index]; 580 if(v->bfraction == 0) { 581 v->s.pict_type = FF_BI_TYPE; 582 } 583 } 584 if(v->s.pict_type == FF_I_TYPE || v->s.pict_type == FF_BI_TYPE) 585 skip_bits(gb, 7); // skip buffer fullness 586 587 if(v->parse_only) 588 return 0; 589 590 /* calculate RND */ 591 if(v->s.pict_type == FF_I_TYPE || v->s.pict_type == FF_BI_TYPE) 592 v->rnd = 1; 593 if(v->s.pict_type == FF_P_TYPE) 594 v->rnd ^= 1; 595 596 /* Quantizer stuff */ 597 pqindex = get_bits(gb, 5); 598 if(!pqindex) return -1; 599 if (v->quantizer_mode == QUANT_FRAME_IMPLICIT) 600 v->pq = ff_vc1_pquant_table[0][pqindex]; 601 else 602 v->pq = ff_vc1_pquant_table[1][pqindex]; 603 604 v->pquantizer = 1; 605 if (v->quantizer_mode == QUANT_FRAME_IMPLICIT) 606 v->pquantizer = pqindex < 9; 607 if (v->quantizer_mode == QUANT_NON_UNIFORM) 608 v->pquantizer = 0; 609 v->pqindex = pqindex; 610 if (pqindex < 9) v->halfpq = get_bits1(gb); 611 else v->halfpq = 0; 612 if (v->quantizer_mode == QUANT_FRAME_EXPLICIT) 613 v->pquantizer = get_bits1(gb); 614 v->dquantfrm = 0; 615 if (v->extended_mv == 1) v->mvrange = get_unary(gb, 0, 3); 616 v->k_x = v->mvrange + 9 + (v->mvrange >> 1); //k_x can be 9 10 12 13 617 v->k_y = v->mvrange + 8; //k_y can be 8 9 10 11 618 v->range_x = 1 << (v->k_x - 1); 619 v->range_y = 1 << (v->k_y - 1); 620 if (v->multires && v->s.pict_type != FF_B_TYPE) v->respic = get_bits(gb, 2); 621 622 if(v->res_x8 && (v->s.pict_type == FF_I_TYPE || v->s.pict_type == FF_BI_TYPE)){ 623 v->x8_type = get_bits1(gb); 624 }else v->x8_type = 0; 625//av_log(v->s.avctx, AV_LOG_INFO, "%c Frame: QP=[%i]%i (+%i/2) %i\n", 626// (v->s.pict_type == FF_P_TYPE) ? 'P' : ((v->s.pict_type == FF_I_TYPE) ? 'I' : 'B'), pqindex, v->pq, v->halfpq, v->rangeredfrm); 627 628 if(v->s.pict_type == FF_I_TYPE || v->s.pict_type == FF_P_TYPE) v->use_ic = 0; 629 630 switch(v->s.pict_type) { 631 case FF_P_TYPE: 632 if (v->pq < 5) v->tt_index = 0; 633 else if(v->pq < 13) v->tt_index = 1; 634 else v->tt_index = 2; 635 636 lowquant = (v->pq > 12) ? 0 : 1; 637 v->mv_mode = ff_vc1_mv_pmode_table[lowquant][get_unary(gb, 1, 4)]; 638 if (v->mv_mode == MV_PMODE_INTENSITY_COMP) 639 { 640 int scale, shift, i; 641 v->mv_mode2 = ff_vc1_mv_pmode_table2[lowquant][get_unary(gb, 1, 3)]; 642 v->lumscale = get_bits(gb, 6); 643 v->lumshift = get_bits(gb, 6); 644 v->use_ic = 1; 645 /* fill lookup tables for intensity compensation */ 646 if(!v->lumscale) { 647 scale = -64; 648 shift = (255 - v->lumshift * 2) << 6; 649 if(v->lumshift > 31) 650 shift += 128 << 6; 651 } else { 652 scale = v->lumscale + 32; 653 if(v->lumshift > 31) 654 shift = (v->lumshift - 64) << 6; 655 else 656 shift = v->lumshift << 6; 657 } 658 for(i = 0; i < 256; i++) { 659 v->luty[i] = av_clip_uint8((scale * i + shift + 32) >> 6); 660 v->lutuv[i] = av_clip_uint8((scale * (i - 128) + 128*64 + 32) >> 6); 661 } 662 } 663 if(v->mv_mode == MV_PMODE_1MV_HPEL || v->mv_mode == MV_PMODE_1MV_HPEL_BILIN) 664 v->s.quarter_sample = 0; 665 else if(v->mv_mode == MV_PMODE_INTENSITY_COMP) { 666 if(v->mv_mode2 == MV_PMODE_1MV_HPEL || v->mv_mode2 == MV_PMODE_1MV_HPEL_BILIN) 667 v->s.quarter_sample = 0; 668 else 669 v->s.quarter_sample = 1; 670 } else 671 v->s.quarter_sample = 1; 672 v->s.mspel = !(v->mv_mode == MV_PMODE_1MV_HPEL_BILIN || (v->mv_mode == MV_PMODE_INTENSITY_COMP && v->mv_mode2 == MV_PMODE_1MV_HPEL_BILIN)); 673 674 if ((v->mv_mode == MV_PMODE_INTENSITY_COMP && 675 v->mv_mode2 == MV_PMODE_MIXED_MV) 676 || v->mv_mode == MV_PMODE_MIXED_MV) 677 { 678 status = bitplane_decoding(v->mv_type_mb_plane, &v->mv_type_is_raw, v); 679 if (status < 0) return -1; 680 av_log(v->s.avctx, AV_LOG_DEBUG, "MB MV Type plane encoding: " 681 "Imode: %i, Invert: %i\n", status>>1, status&1); 682 } else { 683 v->mv_type_is_raw = 0; 684 memset(v->mv_type_mb_plane, 0, v->s.mb_stride * v->s.mb_height); 685 } 686 status = bitplane_decoding(v->s.mbskip_table, &v->skip_is_raw, v); 687 if (status < 0) return -1; 688 av_log(v->s.avctx, AV_LOG_DEBUG, "MB Skip plane encoding: " 689 "Imode: %i, Invert: %i\n", status>>1, status&1); 690 691 /* Hopefully this is correct for P frames */ 692 v->s.mv_table_index = get_bits(gb, 2); //but using ff_vc1_ tables 693 v->cbpcy_vlc = &ff_vc1_cbpcy_p_vlc[get_bits(gb, 2)]; 694 695 if (v->dquant) 696 { 697 av_log(v->s.avctx, AV_LOG_DEBUG, "VOP DQuant info\n"); 698 vop_dquant_decoding(v); 699 } 700 701 v->ttfrm = 0; //FIXME Is that so ? 702 if (v->vstransform) 703 { 704 v->ttmbf = get_bits1(gb); 705 if (v->ttmbf) 706 { 707 v->ttfrm = ff_vc1_ttfrm_to_tt[get_bits(gb, 2)]; 708 } 709 } else { 710 v->ttmbf = 1; 711 v->ttfrm = TT_8X8; 712 } 713 break; 714 case FF_B_TYPE: 715 if (v->pq < 5) v->tt_index = 0; 716 else if(v->pq < 13) v->tt_index = 1; 717 else v->tt_index = 2; 718 719 v->mv_mode = get_bits1(gb) ? MV_PMODE_1MV : MV_PMODE_1MV_HPEL_BILIN; 720 v->s.quarter_sample = (v->mv_mode == MV_PMODE_1MV); 721 v->s.mspel = v->s.quarter_sample; 722 723 status = bitplane_decoding(v->direct_mb_plane, &v->dmb_is_raw, v); 724 if (status < 0) return -1; 725 av_log(v->s.avctx, AV_LOG_DEBUG, "MB Direct Type plane encoding: " 726 "Imode: %i, Invert: %i\n", status>>1, status&1); 727 status = bitplane_decoding(v->s.mbskip_table, &v->skip_is_raw, v); 728 if (status < 0) return -1; 729 av_log(v->s.avctx, AV_LOG_DEBUG, "MB Skip plane encoding: " 730 "Imode: %i, Invert: %i\n", status>>1, status&1); 731 732 v->s.mv_table_index = get_bits(gb, 2); 733 v->cbpcy_vlc = &ff_vc1_cbpcy_p_vlc[get_bits(gb, 2)]; 734 735 if (v->dquant) 736 { 737 av_log(v->s.avctx, AV_LOG_DEBUG, "VOP DQuant info\n"); 738 vop_dquant_decoding(v); 739 } 740 741 v->ttfrm = 0; 742 if (v->vstransform) 743 { 744 v->ttmbf = get_bits1(gb); 745 if (v->ttmbf) 746 { 747 v->ttfrm = ff_vc1_ttfrm_to_tt[get_bits(gb, 2)]; 748 } 749 } else { 750 v->ttmbf = 1; 751 v->ttfrm = TT_8X8; 752 } 753 break; 754 } 755 756 if(!v->x8_type) 757 { 758 /* AC Syntax */ 759 v->c_ac_table_index = decode012(gb); 760 if (v->s.pict_type == FF_I_TYPE || v->s.pict_type == FF_BI_TYPE) 761 { 762 v->y_ac_table_index = decode012(gb); 763 } 764 /* DC Syntax */ 765 v->s.dc_table_index = get_bits1(gb); 766 } 767 768 if(v->s.pict_type == FF_BI_TYPE) { 769 v->s.pict_type = FF_B_TYPE; 770 v->bi_type = 1; 771 } 772 return 0; 773} 774 775int vc1_parse_frame_header_adv(VC1Context *v, GetBitContext* gb) 776{ 777 int pqindex, lowquant; 778 int status; 779 780 v->p_frame_skipped = 0; 781 782 if(v->interlace){ 783 v->fcm = decode012(gb); 784 if(v->fcm){ 785 if(!v->warn_interlaced++) 786 av_log(v->s.avctx, AV_LOG_ERROR, "Interlaced frames/fields support is not implemented\n"); 787 return -1; 788 } 789 } 790 switch(get_unary(gb, 0, 4)) { 791 case 0: 792 v->s.pict_type = FF_P_TYPE; 793 break; 794 case 1: 795 v->s.pict_type = FF_B_TYPE; 796 break; 797 case 2: 798 v->s.pict_type = FF_I_TYPE; 799 break; 800 case 3: 801 v->s.pict_type = FF_BI_TYPE; 802 break; 803 case 4: 804 v->s.pict_type = FF_P_TYPE; // skipped pic 805 v->p_frame_skipped = 1; 806 return 0; 807 } 808 if(v->tfcntrflag) 809 skip_bits(gb, 8); 810 if(v->broadcast) { 811 if(!v->interlace || v->psf) { 812 v->rptfrm = get_bits(gb, 2); 813 } else { 814 v->tff = get_bits1(gb); 815 v->rptfrm = get_bits1(gb); 816 } 817 } 818 if(v->panscanflag) { 819 //... 820 } 821 v->rnd = get_bits1(gb); 822 if(v->interlace) 823 v->uvsamp = get_bits1(gb); 824 if(v->finterpflag) v->interpfrm = get_bits1(gb); 825 if(v->s.pict_type == FF_B_TYPE) { 826 v->bfraction_lut_index = get_vlc2(gb, ff_vc1_bfraction_vlc.table, VC1_BFRACTION_VLC_BITS, 1); 827 v->bfraction = ff_vc1_bfraction_lut[v->bfraction_lut_index]; 828 if(v->bfraction == 0) { 829 v->s.pict_type = FF_BI_TYPE; /* XXX: should not happen here */ 830 } 831 } 832 pqindex = get_bits(gb, 5); 833 if(!pqindex) return -1; 834 v->pqindex = pqindex; 835 if (v->quantizer_mode == QUANT_FRAME_IMPLICIT) 836 v->pq = ff_vc1_pquant_table[0][pqindex]; 837 else 838 v->pq = ff_vc1_pquant_table[1][pqindex]; 839 840 v->pquantizer = 1; 841 if (v->quantizer_mode == QUANT_FRAME_IMPLICIT) 842 v->pquantizer = pqindex < 9; 843 if (v->quantizer_mode == QUANT_NON_UNIFORM) 844 v->pquantizer = 0; 845 v->pqindex = pqindex; 846 if (pqindex < 9) v->halfpq = get_bits1(gb); 847 else v->halfpq = 0; 848 if (v->quantizer_mode == QUANT_FRAME_EXPLICIT) 849 v->pquantizer = get_bits1(gb); 850 if(v->postprocflag) 851 v->postproc = get_bits(gb, 2); 852 853 if(v->s.pict_type == FF_I_TYPE || v->s.pict_type == FF_P_TYPE) v->use_ic = 0; 854 855 if(v->parse_only) 856 return 0; 857 858 switch(v->s.pict_type) { 859 case FF_I_TYPE: 860 case FF_BI_TYPE: 861 status = bitplane_decoding(v->acpred_plane, &v->acpred_is_raw, v); 862 if (status < 0) return -1; 863 av_log(v->s.avctx, AV_LOG_DEBUG, "ACPRED plane encoding: " 864 "Imode: %i, Invert: %i\n", status>>1, status&1); 865 v->condover = CONDOVER_NONE; 866 if(v->overlap && v->pq <= 8) { 867 v->condover = decode012(gb); 868 if(v->condover == CONDOVER_SELECT) { 869 status = bitplane_decoding(v->over_flags_plane, &v->overflg_is_raw, v); 870 if (status < 0) return -1; 871 av_log(v->s.avctx, AV_LOG_DEBUG, "CONDOVER plane encoding: " 872 "Imode: %i, Invert: %i\n", status>>1, status&1); 873 } 874 } 875 break; 876 case FF_P_TYPE: 877 if (v->extended_mv) v->mvrange = get_unary(gb, 0, 3); 878 else v->mvrange = 0; 879 v->k_x = v->mvrange + 9 + (v->mvrange >> 1); //k_x can be 9 10 12 13 880 v->k_y = v->mvrange + 8; //k_y can be 8 9 10 11 881 v->range_x = 1 << (v->k_x - 1); 882 v->range_y = 1 << (v->k_y - 1); 883 884 if (v->pq < 5) v->tt_index = 0; 885 else if(v->pq < 13) v->tt_index = 1; 886 else v->tt_index = 2; 887 888 lowquant = (v->pq > 12) ? 0 : 1; 889 v->mv_mode = ff_vc1_mv_pmode_table[lowquant][get_unary(gb, 1, 4)]; 890 if (v->mv_mode == MV_PMODE_INTENSITY_COMP) 891 { 892 int scale, shift, i; 893 v->mv_mode2 = ff_vc1_mv_pmode_table2[lowquant][get_unary(gb, 1, 3)]; 894 v->lumscale = get_bits(gb, 6); 895 v->lumshift = get_bits(gb, 6); 896 /* fill lookup tables for intensity compensation */ 897 if(!v->lumscale) { 898 scale = -64; 899 shift = (255 - v->lumshift * 2) << 6; 900 if(v->lumshift > 31) 901 shift += 128 << 6; 902 } else { 903 scale = v->lumscale + 32; 904 if(v->lumshift > 31) 905 shift = (v->lumshift - 64) << 6; 906 else 907 shift = v->lumshift << 6; 908 } 909 for(i = 0; i < 256; i++) { 910 v->luty[i] = av_clip_uint8((scale * i + shift + 32) >> 6); 911 v->lutuv[i] = av_clip_uint8((scale * (i - 128) + 128*64 + 32) >> 6); 912 } 913 v->use_ic = 1; 914 } 915 if(v->mv_mode == MV_PMODE_1MV_HPEL || v->mv_mode == MV_PMODE_1MV_HPEL_BILIN) 916 v->s.quarter_sample = 0; 917 else if(v->mv_mode == MV_PMODE_INTENSITY_COMP) { 918 if(v->mv_mode2 == MV_PMODE_1MV_HPEL || v->mv_mode2 == MV_PMODE_1MV_HPEL_BILIN) 919 v->s.quarter_sample = 0; 920 else 921 v->s.quarter_sample = 1; 922 } else 923 v->s.quarter_sample = 1; 924 v->s.mspel = !(v->mv_mode == MV_PMODE_1MV_HPEL_BILIN || (v->mv_mode == MV_PMODE_INTENSITY_COMP && v->mv_mode2 == MV_PMODE_1MV_HPEL_BILIN)); 925 926 if ((v->mv_mode == MV_PMODE_INTENSITY_COMP && 927 v->mv_mode2 == MV_PMODE_MIXED_MV) 928 || v->mv_mode == MV_PMODE_MIXED_MV) 929 { 930 status = bitplane_decoding(v->mv_type_mb_plane, &v->mv_type_is_raw, v); 931 if (status < 0) return -1; 932 av_log(v->s.avctx, AV_LOG_DEBUG, "MB MV Type plane encoding: " 933 "Imode: %i, Invert: %i\n", status>>1, status&1); 934 } else { 935 v->mv_type_is_raw = 0; 936 memset(v->mv_type_mb_plane, 0, v->s.mb_stride * v->s.mb_height); 937 } 938 status = bitplane_decoding(v->s.mbskip_table, &v->skip_is_raw, v); 939 if (status < 0) return -1; 940 av_log(v->s.avctx, AV_LOG_DEBUG, "MB Skip plane encoding: " 941 "Imode: %i, Invert: %i\n", status>>1, status&1); 942 943 /* Hopefully this is correct for P frames */ 944 v->s.mv_table_index = get_bits(gb, 2); //but using ff_vc1_ tables 945 v->cbpcy_vlc = &ff_vc1_cbpcy_p_vlc[get_bits(gb, 2)]; 946 if (v->dquant) 947 { 948 av_log(v->s.avctx, AV_LOG_DEBUG, "VOP DQuant info\n"); 949 vop_dquant_decoding(v); 950 } 951 952 v->ttfrm = 0; //FIXME Is that so ? 953 if (v->vstransform) 954 { 955 v->ttmbf = get_bits1(gb); 956 if (v->ttmbf) 957 { 958 v->ttfrm = ff_vc1_ttfrm_to_tt[get_bits(gb, 2)]; 959 } 960 } else { 961 v->ttmbf = 1; 962 v->ttfrm = TT_8X8; 963 } 964 break; 965 case FF_B_TYPE: 966 if (v->extended_mv) v->mvrange = get_unary(gb, 0, 3); 967 else v->mvrange = 0; 968 v->k_x = v->mvrange + 9 + (v->mvrange >> 1); //k_x can be 9 10 12 13 969 v->k_y = v->mvrange + 8; //k_y can be 8 9 10 11 970 v->range_x = 1 << (v->k_x - 1); 971 v->range_y = 1 << (v->k_y - 1); 972 973 if (v->pq < 5) v->tt_index = 0; 974 else if(v->pq < 13) v->tt_index = 1; 975 else v->tt_index = 2; 976 977 v->mv_mode = get_bits1(gb) ? MV_PMODE_1MV : MV_PMODE_1MV_HPEL_BILIN; 978 v->s.quarter_sample = (v->mv_mode == MV_PMODE_1MV); 979 v->s.mspel = v->s.quarter_sample; 980 981 status = bitplane_decoding(v->direct_mb_plane, &v->dmb_is_raw, v); 982 if (status < 0) return -1; 983 av_log(v->s.avctx, AV_LOG_DEBUG, "MB Direct Type plane encoding: " 984 "Imode: %i, Invert: %i\n", status>>1, status&1); 985 status = bitplane_decoding(v->s.mbskip_table, &v->skip_is_raw, v); 986 if (status < 0) return -1; 987 av_log(v->s.avctx, AV_LOG_DEBUG, "MB Skip plane encoding: " 988 "Imode: %i, Invert: %i\n", status>>1, status&1); 989 990 v->s.mv_table_index = get_bits(gb, 2); 991 v->cbpcy_vlc = &ff_vc1_cbpcy_p_vlc[get_bits(gb, 2)]; 992 993 if (v->dquant) 994 { 995 av_log(v->s.avctx, AV_LOG_DEBUG, "VOP DQuant info\n"); 996 vop_dquant_decoding(v); 997 } 998 999 v->ttfrm = 0; 1000 if (v->vstransform) 1001 { 1002 v->ttmbf = get_bits1(gb); 1003 if (v->ttmbf) 1004 { 1005 v->ttfrm = ff_vc1_ttfrm_to_tt[get_bits(gb, 2)]; 1006 } 1007 } else { 1008 v->ttmbf = 1; 1009 v->ttfrm = TT_8X8; 1010 } 1011 break; 1012 } 1013 1014 /* AC Syntax */ 1015 v->c_ac_table_index = decode012(gb); 1016 if (v->s.pict_type == FF_I_TYPE || v->s.pict_type == FF_BI_TYPE) 1017 { 1018 v->y_ac_table_index = decode012(gb); 1019 } 1020 /* DC Syntax */ 1021 v->s.dc_table_index = get_bits1(gb); 1022 if ((v->s.pict_type == FF_I_TYPE || v->s.pict_type == FF_BI_TYPE) && v->dquant) { 1023 av_log(v->s.avctx, AV_LOG_DEBUG, "VOP DQuant info\n"); 1024 vop_dquant_decoding(v); 1025 } 1026 1027 v->bi_type = 0; 1028 if(v->s.pict_type == FF_BI_TYPE) { 1029 v->s.pict_type = FF_B_TYPE; 1030 v->bi_type = 1; 1031 } 1032 return 0; 1033} 1034