Libav
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00001 /* 00002 * VC-1 and WMV3 decoder common code 00003 * Copyright (c) 2006-2007 Konstantin Shishkov 00004 * Partly based on vc9.c (c) 2005 Anonymous, Alex Beregszaszi, Michael Niedermayer 00005 * 00006 * This file is part of FFmpeg. 00007 * 00008 * FFmpeg is free software; you can redistribute it and/or 00009 * modify it under the terms of the GNU Lesser General Public 00010 * License as published by the Free Software Foundation; either 00011 * version 2.1 of the License, or (at your option) any later version. 00012 * 00013 * FFmpeg is distributed in the hope that it will be useful, 00014 * but WITHOUT ANY WARRANTY; without even the implied warranty of 00015 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 00016 * Lesser General Public License for more details. 00017 * 00018 * You should have received a copy of the GNU Lesser General Public 00019 * License along with FFmpeg; if not, write to the Free Software 00020 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA 00021 */ 00022 00028 #include "internal.h" 00029 #include "dsputil.h" 00030 #include "avcodec.h" 00031 #include "mpegvideo.h" 00032 #include "vc1.h" 00033 #include "vc1data.h" 00034 #include "msmpeg4data.h" 00035 #include "unary.h" 00036 #include "simple_idct.h" 00037 00038 #undef NDEBUG 00039 #include <assert.h> 00040 00041 /***********************************************************************/ 00052 enum Imode { 00053 IMODE_RAW, 00054 IMODE_NORM2, 00055 IMODE_DIFF2, 00056 IMODE_NORM6, 00057 IMODE_DIFF6, 00058 IMODE_ROWSKIP, 00059 IMODE_COLSKIP 00060 }; //imode defines 00062 00069 static void decode_rowskip(uint8_t* plane, int width, int height, int stride, GetBitContext *gb){ 00070 int x, y; 00071 00072 for (y=0; y<height; y++){ 00073 if (!get_bits1(gb)) //rowskip 00074 memset(plane, 0, width); 00075 else 00076 for (x=0; x<width; x++) 00077 plane[x] = get_bits1(gb); 00078 plane += stride; 00079 } 00080 } 00081 00089 static void decode_colskip(uint8_t* plane, int width, int height, int stride, GetBitContext *gb){ 00090 int x, y; 00091 00092 for (x=0; x<width; x++){ 00093 if (!get_bits1(gb)) //colskip 00094 for (y=0; y<height; y++) 00095 plane[y*stride] = 0; 00096 else 00097 for (y=0; y<height; y++) 00098 plane[y*stride] = get_bits1(gb); 00099 plane ++; 00100 } 00101 } 00102 00110 static int bitplane_decoding(uint8_t* data, int *raw_flag, VC1Context *v) 00111 { 00112 GetBitContext *gb = &v->s.gb; 00113 00114 int imode, x, y, code, offset; 00115 uint8_t invert, *planep = data; 00116 int width, height, stride; 00117 00118 width = v->s.mb_width; 00119 height = v->s.mb_height; 00120 stride = v->s.mb_stride; 00121 invert = get_bits1(gb); 00122 imode = get_vlc2(gb, ff_vc1_imode_vlc.table, VC1_IMODE_VLC_BITS, 1); 00123 00124 *raw_flag = 0; 00125 switch (imode) 00126 { 00127 case IMODE_RAW: 00128 //Data is actually read in the MB layer (same for all tests == "raw") 00129 *raw_flag = 1; //invert ignored 00130 return invert; 00131 case IMODE_DIFF2: 00132 case IMODE_NORM2: 00133 if ((height * width) & 1) 00134 { 00135 *planep++ = get_bits1(gb); 00136 offset = 1; 00137 } 00138 else offset = 0; 00139 // decode bitplane as one long line 00140 for (y = offset; y < height * width; y += 2) { 00141 code = get_vlc2(gb, ff_vc1_norm2_vlc.table, VC1_NORM2_VLC_BITS, 1); 00142 *planep++ = code & 1; 00143 offset++; 00144 if(offset == width) { 00145 offset = 0; 00146 planep += stride - width; 00147 } 00148 *planep++ = code >> 1; 00149 offset++; 00150 if(offset == width) { 00151 offset = 0; 00152 planep += stride - width; 00153 } 00154 } 00155 break; 00156 case IMODE_DIFF6: 00157 case IMODE_NORM6: 00158 if(!(height % 3) && (width % 3)) { // use 2x3 decoding 00159 for(y = 0; y < height; y+= 3) { 00160 for(x = width & 1; x < width; x += 2) { 00161 code = get_vlc2(gb, ff_vc1_norm6_vlc.table, VC1_NORM6_VLC_BITS, 2); 00162 if(code < 0){ 00163 av_log(v->s.avctx, AV_LOG_DEBUG, "invalid NORM-6 VLC\n"); 00164 return -1; 00165 } 00166 planep[x + 0] = (code >> 0) & 1; 00167 planep[x + 1] = (code >> 1) & 1; 00168 planep[x + 0 + stride] = (code >> 2) & 1; 00169 planep[x + 1 + stride] = (code >> 3) & 1; 00170 planep[x + 0 + stride * 2] = (code >> 4) & 1; 00171 planep[x + 1 + stride * 2] = (code >> 5) & 1; 00172 } 00173 planep += stride * 3; 00174 } 00175 if(width & 1) decode_colskip(data, 1, height, stride, &v->s.gb); 00176 } else { // 3x2 00177 planep += (height & 1) * stride; 00178 for(y = height & 1; y < height; y += 2) { 00179 for(x = width % 3; x < width; x += 3) { 00180 code = get_vlc2(gb, ff_vc1_norm6_vlc.table, VC1_NORM6_VLC_BITS, 2); 00181 if(code < 0){ 00182 av_log(v->s.avctx, AV_LOG_DEBUG, "invalid NORM-6 VLC\n"); 00183 return -1; 00184 } 00185 planep[x + 0] = (code >> 0) & 1; 00186 planep[x + 1] = (code >> 1) & 1; 00187 planep[x + 2] = (code >> 2) & 1; 00188 planep[x + 0 + stride] = (code >> 3) & 1; 00189 planep[x + 1 + stride] = (code >> 4) & 1; 00190 planep[x + 2 + stride] = (code >> 5) & 1; 00191 } 00192 planep += stride * 2; 00193 } 00194 x = width % 3; 00195 if(x) decode_colskip(data , x, height , stride, &v->s.gb); 00196 if(height & 1) decode_rowskip(data+x, width - x, 1, stride, &v->s.gb); 00197 } 00198 break; 00199 case IMODE_ROWSKIP: 00200 decode_rowskip(data, width, height, stride, &v->s.gb); 00201 break; 00202 case IMODE_COLSKIP: 00203 decode_colskip(data, width, height, stride, &v->s.gb); 00204 break; 00205 default: break; 00206 } 00207 00208 /* Applying diff operator */ 00209 if (imode == IMODE_DIFF2 || imode == IMODE_DIFF6) 00210 { 00211 planep = data; 00212 planep[0] ^= invert; 00213 for (x=1; x<width; x++) 00214 planep[x] ^= planep[x-1]; 00215 for (y=1; y<height; y++) 00216 { 00217 planep += stride; 00218 planep[0] ^= planep[-stride]; 00219 for (x=1; x<width; x++) 00220 { 00221 if (planep[x-1] != planep[x-stride]) planep[x] ^= invert; 00222 else planep[x] ^= planep[x-1]; 00223 } 00224 } 00225 } 00226 else if (invert) 00227 { 00228 planep = data; 00229 for (x=0; x<stride*height; x++) planep[x] = !planep[x]; //FIXME stride 00230 } 00231 return (imode<<1) + invert; 00232 } 00233 //Bitplane group 00235 00236 /***********************************************************************/ 00240 static int vop_dquant_decoding(VC1Context *v) 00241 { 00242 GetBitContext *gb = &v->s.gb; 00243 int pqdiff; 00244 00245 //variable size 00246 if (v->dquant == 2) 00247 { 00248 pqdiff = get_bits(gb, 3); 00249 if (pqdiff == 7) v->altpq = get_bits(gb, 5); 00250 else v->altpq = v->pq + pqdiff + 1; 00251 } 00252 else 00253 { 00254 v->dquantfrm = get_bits1(gb); 00255 if ( v->dquantfrm ) 00256 { 00257 v->dqprofile = get_bits(gb, 2); 00258 switch (v->dqprofile) 00259 { 00260 case DQPROFILE_SINGLE_EDGE: 00261 case DQPROFILE_DOUBLE_EDGES: 00262 v->dqsbedge = get_bits(gb, 2); 00263 break; 00264 case DQPROFILE_ALL_MBS: 00265 v->dqbilevel = get_bits1(gb); 00266 if(!v->dqbilevel) 00267 v->halfpq = 0; 00268 default: break; //Forbidden ? 00269 } 00270 if (v->dqbilevel || v->dqprofile != DQPROFILE_ALL_MBS) 00271 { 00272 pqdiff = get_bits(gb, 3); 00273 if (pqdiff == 7) v->altpq = get_bits(gb, 5); 00274 else v->altpq = v->pq + pqdiff + 1; 00275 } 00276 } 00277 } 00278 return 0; 00279 } 00280 00281 static int decode_sequence_header_adv(VC1Context *v, GetBitContext *gb); 00282 00290 int vc1_decode_sequence_header(AVCodecContext *avctx, VC1Context *v, GetBitContext *gb) 00291 { 00292 av_log(avctx, AV_LOG_DEBUG, "Header: %0X\n", show_bits(gb, 32)); 00293 v->profile = get_bits(gb, 2); 00294 if (v->profile == PROFILE_COMPLEX) 00295 { 00296 av_log(avctx, AV_LOG_ERROR, "WMV3 Complex Profile is not fully supported\n"); 00297 } 00298 00299 if (v->profile == PROFILE_ADVANCED) 00300 { 00301 v->zz_8x4 = ff_vc1_adv_progressive_8x4_zz; 00302 v->zz_4x8 = ff_vc1_adv_progressive_4x8_zz; 00303 return decode_sequence_header_adv(v, gb); 00304 } 00305 else 00306 { 00307 v->zz_8x4 = wmv2_scantableA; 00308 v->zz_4x8 = wmv2_scantableB; 00309 v->res_sm = get_bits(gb, 2); //reserved 00310 if (v->res_sm) 00311 { 00312 av_log(avctx, AV_LOG_ERROR, 00313 "Reserved RES_SM=%i is forbidden\n", v->res_sm); 00314 return -1; 00315 } 00316 } 00317 00318 // (fps-2)/4 (->30) 00319 v->frmrtq_postproc = get_bits(gb, 3); //common 00320 // (bitrate-32kbps)/64kbps 00321 v->bitrtq_postproc = get_bits(gb, 5); //common 00322 v->s.loop_filter = get_bits1(gb); //common 00323 if(v->s.loop_filter == 1 && v->profile == PROFILE_SIMPLE) 00324 { 00325 av_log(avctx, AV_LOG_ERROR, 00326 "LOOPFILTER shall not be enabled in Simple Profile\n"); 00327 } 00328 if(v->s.avctx->skip_loop_filter >= AVDISCARD_ALL) 00329 v->s.loop_filter = 0; 00330 00331 v->res_x8 = get_bits1(gb); //reserved 00332 v->multires = get_bits1(gb); 00333 v->res_fasttx = get_bits1(gb); 00334 if (!v->res_fasttx) 00335 { 00336 v->s.dsp.vc1_inv_trans_8x8 = ff_simple_idct; 00337 v->s.dsp.vc1_inv_trans_8x4 = ff_simple_idct84_add; 00338 v->s.dsp.vc1_inv_trans_4x8 = ff_simple_idct48_add; 00339 v->s.dsp.vc1_inv_trans_4x4 = ff_simple_idct44_add; 00340 v->s.dsp.vc1_inv_trans_8x8_dc = ff_simple_idct_add; 00341 v->s.dsp.vc1_inv_trans_8x4_dc = ff_simple_idct84_add; 00342 v->s.dsp.vc1_inv_trans_4x8_dc = ff_simple_idct48_add; 00343 v->s.dsp.vc1_inv_trans_4x4_dc = ff_simple_idct44_add; 00344 } 00345 00346 v->fastuvmc = get_bits1(gb); //common 00347 if (!v->profile && !v->fastuvmc) 00348 { 00349 av_log(avctx, AV_LOG_ERROR, 00350 "FASTUVMC unavailable in Simple Profile\n"); 00351 return -1; 00352 } 00353 v->extended_mv = get_bits1(gb); //common 00354 if (!v->profile && v->extended_mv) 00355 { 00356 av_log(avctx, AV_LOG_ERROR, 00357 "Extended MVs unavailable in Simple Profile\n"); 00358 return -1; 00359 } 00360 v->dquant = get_bits(gb, 2); //common 00361 v->vstransform = get_bits1(gb); //common 00362 00363 v->res_transtab = get_bits1(gb); 00364 if (v->res_transtab) 00365 { 00366 av_log(avctx, AV_LOG_ERROR, 00367 "1 for reserved RES_TRANSTAB is forbidden\n"); 00368 return -1; 00369 } 00370 00371 v->overlap = get_bits1(gb); //common 00372 00373 v->s.resync_marker = get_bits1(gb); 00374 v->rangered = get_bits1(gb); 00375 if (v->rangered && v->profile == PROFILE_SIMPLE) 00376 { 00377 av_log(avctx, AV_LOG_INFO, 00378 "RANGERED should be set to 0 in Simple Profile\n"); 00379 } 00380 00381 v->s.max_b_frames = avctx->max_b_frames = get_bits(gb, 3); //common 00382 v->quantizer_mode = get_bits(gb, 2); //common 00383 00384 v->finterpflag = get_bits1(gb); //common 00385 v->res_rtm_flag = get_bits1(gb); //reserved 00386 if (!v->res_rtm_flag) 00387 { 00388 // av_log(avctx, AV_LOG_ERROR, 00389 // "0 for reserved RES_RTM_FLAG is forbidden\n"); 00390 av_log(avctx, AV_LOG_ERROR, 00391 "Old WMV3 version detected, only I-frames will be decoded\n"); 00392 //return -1; 00393 } 00394 //TODO: figure out what they mean (always 0x402F) 00395 if(!v->res_fasttx) skip_bits(gb, 16); 00396 av_log(avctx, AV_LOG_DEBUG, 00397 "Profile %i:\nfrmrtq_postproc=%i, bitrtq_postproc=%i\n" 00398 "LoopFilter=%i, MultiRes=%i, FastUVMC=%i, Extended MV=%i\n" 00399 "Rangered=%i, VSTransform=%i, Overlap=%i, SyncMarker=%i\n" 00400 "DQuant=%i, Quantizer mode=%i, Max B frames=%i\n", 00401 v->profile, v->frmrtq_postproc, v->bitrtq_postproc, 00402 v->s.loop_filter, v->multires, v->fastuvmc, v->extended_mv, 00403 v->rangered, v->vstransform, v->overlap, v->s.resync_marker, 00404 v->dquant, v->quantizer_mode, avctx->max_b_frames 00405 ); 00406 return 0; 00407 } 00408 00409 static int decode_sequence_header_adv(VC1Context *v, GetBitContext *gb) 00410 { 00411 v->res_rtm_flag = 1; 00412 v->level = get_bits(gb, 3); 00413 if(v->level >= 5) 00414 { 00415 av_log(v->s.avctx, AV_LOG_ERROR, "Reserved LEVEL %i\n",v->level); 00416 } 00417 v->chromaformat = get_bits(gb, 2); 00418 if (v->chromaformat != 1) 00419 { 00420 av_log(v->s.avctx, AV_LOG_ERROR, 00421 "Only 4:2:0 chroma format supported\n"); 00422 return -1; 00423 } 00424 00425 // (fps-2)/4 (->30) 00426 v->frmrtq_postproc = get_bits(gb, 3); //common 00427 // (bitrate-32kbps)/64kbps 00428 v->bitrtq_postproc = get_bits(gb, 5); //common 00429 v->postprocflag = get_bits1(gb); //common 00430 00431 v->s.avctx->coded_width = (get_bits(gb, 12) + 1) << 1; 00432 v->s.avctx->coded_height = (get_bits(gb, 12) + 1) << 1; 00433 v->s.avctx->width = v->s.avctx->coded_width; 00434 v->s.avctx->height = v->s.avctx->coded_height; 00435 v->broadcast = get_bits1(gb); 00436 v->interlace = get_bits1(gb); 00437 v->tfcntrflag = get_bits1(gb); 00438 v->finterpflag = get_bits1(gb); 00439 skip_bits1(gb); // reserved 00440 00441 v->s.h_edge_pos = v->s.avctx->coded_width; 00442 v->s.v_edge_pos = v->s.avctx->coded_height; 00443 00444 av_log(v->s.avctx, AV_LOG_DEBUG, 00445 "Advanced Profile level %i:\nfrmrtq_postproc=%i, bitrtq_postproc=%i\n" 00446 "LoopFilter=%i, ChromaFormat=%i, Pulldown=%i, Interlace: %i\n" 00447 "TFCTRflag=%i, FINTERPflag=%i\n", 00448 v->level, v->frmrtq_postproc, v->bitrtq_postproc, 00449 v->s.loop_filter, v->chromaformat, v->broadcast, v->interlace, 00450 v->tfcntrflag, v->finterpflag 00451 ); 00452 00453 v->psf = get_bits1(gb); 00454 if(v->psf) { //PsF, 6.1.13 00455 av_log(v->s.avctx, AV_LOG_ERROR, "Progressive Segmented Frame mode: not supported (yet)\n"); 00456 return -1; 00457 } 00458 v->s.max_b_frames = v->s.avctx->max_b_frames = 7; 00459 if(get_bits1(gb)) { //Display Info - decoding is not affected by it 00460 int w, h, ar = 0; 00461 av_log(v->s.avctx, AV_LOG_DEBUG, "Display extended info:\n"); 00462 v->s.avctx->width = w = get_bits(gb, 14) + 1; 00463 v->s.avctx->height = h = get_bits(gb, 14) + 1; 00464 av_log(v->s.avctx, AV_LOG_DEBUG, "Display dimensions: %ix%i\n", w, h); 00465 if(get_bits1(gb)) 00466 ar = get_bits(gb, 4); 00467 if(ar && ar < 14){ 00468 v->s.avctx->sample_aspect_ratio = ff_vc1_pixel_aspect[ar]; 00469 }else if(ar == 15){ 00470 w = get_bits(gb, 8); 00471 h = get_bits(gb, 8); 00472 v->s.avctx->sample_aspect_ratio = (AVRational){w, h}; 00473 } 00474 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); 00475 00476 if(get_bits1(gb)){ //framerate stuff 00477 if(get_bits1(gb)) { 00478 v->s.avctx->time_base.num = 32; 00479 v->s.avctx->time_base.den = get_bits(gb, 16) + 1; 00480 } else { 00481 int nr, dr; 00482 nr = get_bits(gb, 8); 00483 dr = get_bits(gb, 4); 00484 if(nr && nr < 8 && dr && dr < 3){ 00485 v->s.avctx->time_base.num = ff_vc1_fps_dr[dr - 1]; 00486 v->s.avctx->time_base.den = ff_vc1_fps_nr[nr - 1] * 1000; 00487 } 00488 } 00489 } 00490 00491 if(get_bits1(gb)){ 00492 v->color_prim = get_bits(gb, 8); 00493 v->transfer_char = get_bits(gb, 8); 00494 v->matrix_coef = get_bits(gb, 8); 00495 } 00496 } 00497 00498 v->hrd_param_flag = get_bits1(gb); 00499 if(v->hrd_param_flag) { 00500 int i; 00501 v->hrd_num_leaky_buckets = get_bits(gb, 5); 00502 skip_bits(gb, 4); //bitrate exponent 00503 skip_bits(gb, 4); //buffer size exponent 00504 for(i = 0; i < v->hrd_num_leaky_buckets; i++) { 00505 skip_bits(gb, 16); //hrd_rate[n] 00506 skip_bits(gb, 16); //hrd_buffer[n] 00507 } 00508 } 00509 return 0; 00510 } 00511 00512 int vc1_decode_entry_point(AVCodecContext *avctx, VC1Context *v, GetBitContext *gb) 00513 { 00514 int i; 00515 00516 av_log(avctx, AV_LOG_DEBUG, "Entry point: %08X\n", show_bits_long(gb, 32)); 00517 v->broken_link = get_bits1(gb); 00518 v->closed_entry = get_bits1(gb); 00519 v->panscanflag = get_bits1(gb); 00520 v->refdist_flag = get_bits1(gb); 00521 v->s.loop_filter = get_bits1(gb); 00522 v->fastuvmc = get_bits1(gb); 00523 v->extended_mv = get_bits1(gb); 00524 v->dquant = get_bits(gb, 2); 00525 v->vstransform = get_bits1(gb); 00526 v->overlap = get_bits1(gb); 00527 v->quantizer_mode = get_bits(gb, 2); 00528 00529 if(v->hrd_param_flag){ 00530 for(i = 0; i < v->hrd_num_leaky_buckets; i++) { 00531 skip_bits(gb, 8); //hrd_full[n] 00532 } 00533 } 00534 00535 if(get_bits1(gb)){ 00536 avctx->coded_width = (get_bits(gb, 12)+1)<<1; 00537 avctx->coded_height = (get_bits(gb, 12)+1)<<1; 00538 } 00539 if(v->extended_mv) 00540 v->extended_dmv = get_bits1(gb); 00541 if((v->range_mapy_flag = get_bits1(gb))) { 00542 av_log(avctx, AV_LOG_ERROR, "Luma scaling is not supported, expect wrong picture\n"); 00543 v->range_mapy = get_bits(gb, 3); 00544 } 00545 if((v->range_mapuv_flag = get_bits1(gb))) { 00546 av_log(avctx, AV_LOG_ERROR, "Chroma scaling is not supported, expect wrong picture\n"); 00547 v->range_mapuv = get_bits(gb, 3); 00548 } 00549 00550 av_log(avctx, AV_LOG_DEBUG, "Entry point info:\n" 00551 "BrokenLink=%i, ClosedEntry=%i, PanscanFlag=%i\n" 00552 "RefDist=%i, Postproc=%i, FastUVMC=%i, ExtMV=%i\n" 00553 "DQuant=%i, VSTransform=%i, Overlap=%i, Qmode=%i\n", 00554 v->broken_link, v->closed_entry, v->panscanflag, v->refdist_flag, v->s.loop_filter, 00555 v->fastuvmc, v->extended_mv, v->dquant, v->vstransform, v->overlap, v->quantizer_mode); 00556 00557 return 0; 00558 } 00559 00560 int vc1_parse_frame_header(VC1Context *v, GetBitContext* gb) 00561 { 00562 int pqindex, lowquant, status; 00563 00564 if(v->finterpflag) v->interpfrm = get_bits1(gb); 00565 skip_bits(gb, 2); //framecnt unused 00566 v->rangeredfrm = 0; 00567 if (v->rangered) v->rangeredfrm = get_bits1(gb); 00568 v->s.pict_type = get_bits1(gb); 00569 if (v->s.avctx->max_b_frames) { 00570 if (!v->s.pict_type) { 00571 if (get_bits1(gb)) v->s.pict_type = FF_I_TYPE; 00572 else v->s.pict_type = FF_B_TYPE; 00573 } else v->s.pict_type = FF_P_TYPE; 00574 } else v->s.pict_type = v->s.pict_type ? FF_P_TYPE : FF_I_TYPE; 00575 00576 v->bi_type = 0; 00577 if(v->s.pict_type == FF_B_TYPE) { 00578 v->bfraction_lut_index = get_vlc2(gb, ff_vc1_bfraction_vlc.table, VC1_BFRACTION_VLC_BITS, 1); 00579 v->bfraction = ff_vc1_bfraction_lut[v->bfraction_lut_index]; 00580 if(v->bfraction == 0) { 00581 v->s.pict_type = FF_BI_TYPE; 00582 } 00583 } 00584 if(v->s.pict_type == FF_I_TYPE || v->s.pict_type == FF_BI_TYPE) 00585 skip_bits(gb, 7); // skip buffer fullness 00586 00587 if(v->parse_only) 00588 return 0; 00589 00590 /* calculate RND */ 00591 if(v->s.pict_type == FF_I_TYPE || v->s.pict_type == FF_BI_TYPE) 00592 v->rnd = 1; 00593 if(v->s.pict_type == FF_P_TYPE) 00594 v->rnd ^= 1; 00595 00596 /* Quantizer stuff */ 00597 pqindex = get_bits(gb, 5); 00598 if(!pqindex) return -1; 00599 if (v->quantizer_mode == QUANT_FRAME_IMPLICIT) 00600 v->pq = ff_vc1_pquant_table[0][pqindex]; 00601 else 00602 v->pq = ff_vc1_pquant_table[1][pqindex]; 00603 00604 v->pquantizer = 1; 00605 if (v->quantizer_mode == QUANT_FRAME_IMPLICIT) 00606 v->pquantizer = pqindex < 9; 00607 if (v->quantizer_mode == QUANT_NON_UNIFORM) 00608 v->pquantizer = 0; 00609 v->pqindex = pqindex; 00610 if (pqindex < 9) v->halfpq = get_bits1(gb); 00611 else v->halfpq = 0; 00612 if (v->quantizer_mode == QUANT_FRAME_EXPLICIT) 00613 v->pquantizer = get_bits1(gb); 00614 v->dquantfrm = 0; 00615 if (v->extended_mv == 1) v->mvrange = get_unary(gb, 0, 3); 00616 v->k_x = v->mvrange + 9 + (v->mvrange >> 1); //k_x can be 9 10 12 13 00617 v->k_y = v->mvrange + 8; //k_y can be 8 9 10 11 00618 v->range_x = 1 << (v->k_x - 1); 00619 v->range_y = 1 << (v->k_y - 1); 00620 if (v->multires && v->s.pict_type != FF_B_TYPE) v->respic = get_bits(gb, 2); 00621 00622 if(v->res_x8 && (v->s.pict_type == FF_I_TYPE || v->s.pict_type == FF_BI_TYPE)){ 00623 v->x8_type = get_bits1(gb); 00624 }else v->x8_type = 0; 00625 //av_log(v->s.avctx, AV_LOG_INFO, "%c Frame: QP=[%i]%i (+%i/2) %i\n", 00626 // (v->s.pict_type == FF_P_TYPE) ? 'P' : ((v->s.pict_type == FF_I_TYPE) ? 'I' : 'B'), pqindex, v->pq, v->halfpq, v->rangeredfrm); 00627 00628 if(v->s.pict_type == FF_I_TYPE || v->s.pict_type == FF_P_TYPE) v->use_ic = 0; 00629 00630 switch(v->s.pict_type) { 00631 case FF_P_TYPE: 00632 if (v->pq < 5) v->tt_index = 0; 00633 else if(v->pq < 13) v->tt_index = 1; 00634 else v->tt_index = 2; 00635 00636 lowquant = (v->pq > 12) ? 0 : 1; 00637 v->mv_mode = ff_vc1_mv_pmode_table[lowquant][get_unary(gb, 1, 4)]; 00638 if (v->mv_mode == MV_PMODE_INTENSITY_COMP) 00639 { 00640 int scale, shift, i; 00641 v->mv_mode2 = ff_vc1_mv_pmode_table2[lowquant][get_unary(gb, 1, 3)]; 00642 v->lumscale = get_bits(gb, 6); 00643 v->lumshift = get_bits(gb, 6); 00644 v->use_ic = 1; 00645 /* fill lookup tables for intensity compensation */ 00646 if(!v->lumscale) { 00647 scale = -64; 00648 shift = (255 - v->lumshift * 2) << 6; 00649 if(v->lumshift > 31) 00650 shift += 128 << 6; 00651 } else { 00652 scale = v->lumscale + 32; 00653 if(v->lumshift > 31) 00654 shift = (v->lumshift - 64) << 6; 00655 else 00656 shift = v->lumshift << 6; 00657 } 00658 for(i = 0; i < 256; i++) { 00659 v->luty[i] = av_clip_uint8((scale * i + shift + 32) >> 6); 00660 v->lutuv[i] = av_clip_uint8((scale * (i - 128) + 128*64 + 32) >> 6); 00661 } 00662 } 00663 if(v->mv_mode == MV_PMODE_1MV_HPEL || v->mv_mode == MV_PMODE_1MV_HPEL_BILIN) 00664 v->s.quarter_sample = 0; 00665 else if(v->mv_mode == MV_PMODE_INTENSITY_COMP) { 00666 if(v->mv_mode2 == MV_PMODE_1MV_HPEL || v->mv_mode2 == MV_PMODE_1MV_HPEL_BILIN) 00667 v->s.quarter_sample = 0; 00668 else 00669 v->s.quarter_sample = 1; 00670 } else 00671 v->s.quarter_sample = 1; 00672 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)); 00673 00674 if ((v->mv_mode == MV_PMODE_INTENSITY_COMP && 00675 v->mv_mode2 == MV_PMODE_MIXED_MV) 00676 || v->mv_mode == MV_PMODE_MIXED_MV) 00677 { 00678 status = bitplane_decoding(v->mv_type_mb_plane, &v->mv_type_is_raw, v); 00679 if (status < 0) return -1; 00680 av_log(v->s.avctx, AV_LOG_DEBUG, "MB MV Type plane encoding: " 00681 "Imode: %i, Invert: %i\n", status>>1, status&1); 00682 } else { 00683 v->mv_type_is_raw = 0; 00684 memset(v->mv_type_mb_plane, 0, v->s.mb_stride * v->s.mb_height); 00685 } 00686 status = bitplane_decoding(v->s.mbskip_table, &v->skip_is_raw, v); 00687 if (status < 0) return -1; 00688 av_log(v->s.avctx, AV_LOG_DEBUG, "MB Skip plane encoding: " 00689 "Imode: %i, Invert: %i\n", status>>1, status&1); 00690 00691 /* Hopefully this is correct for P frames */ 00692 v->s.mv_table_index = get_bits(gb, 2); //but using ff_vc1_ tables 00693 v->cbpcy_vlc = &ff_vc1_cbpcy_p_vlc[get_bits(gb, 2)]; 00694 00695 if (v->dquant) 00696 { 00697 av_log(v->s.avctx, AV_LOG_DEBUG, "VOP DQuant info\n"); 00698 vop_dquant_decoding(v); 00699 } 00700 00701 v->ttfrm = 0; //FIXME Is that so ? 00702 if (v->vstransform) 00703 { 00704 v->ttmbf = get_bits1(gb); 00705 if (v->ttmbf) 00706 { 00707 v->ttfrm = ff_vc1_ttfrm_to_tt[get_bits(gb, 2)]; 00708 } 00709 } else { 00710 v->ttmbf = 1; 00711 v->ttfrm = TT_8X8; 00712 } 00713 break; 00714 case FF_B_TYPE: 00715 if (v->pq < 5) v->tt_index = 0; 00716 else if(v->pq < 13) v->tt_index = 1; 00717 else v->tt_index = 2; 00718 00719 v->mv_mode = get_bits1(gb) ? MV_PMODE_1MV : MV_PMODE_1MV_HPEL_BILIN; 00720 v->s.quarter_sample = (v->mv_mode == MV_PMODE_1MV); 00721 v->s.mspel = v->s.quarter_sample; 00722 00723 status = bitplane_decoding(v->direct_mb_plane, &v->dmb_is_raw, v); 00724 if (status < 0) return -1; 00725 av_log(v->s.avctx, AV_LOG_DEBUG, "MB Direct Type plane encoding: " 00726 "Imode: %i, Invert: %i\n", status>>1, status&1); 00727 status = bitplane_decoding(v->s.mbskip_table, &v->skip_is_raw, v); 00728 if (status < 0) return -1; 00729 av_log(v->s.avctx, AV_LOG_DEBUG, "MB Skip plane encoding: " 00730 "Imode: %i, Invert: %i\n", status>>1, status&1); 00731 00732 v->s.mv_table_index = get_bits(gb, 2); 00733 v->cbpcy_vlc = &ff_vc1_cbpcy_p_vlc[get_bits(gb, 2)]; 00734 00735 if (v->dquant) 00736 { 00737 av_log(v->s.avctx, AV_LOG_DEBUG, "VOP DQuant info\n"); 00738 vop_dquant_decoding(v); 00739 } 00740 00741 v->ttfrm = 0; 00742 if (v->vstransform) 00743 { 00744 v->ttmbf = get_bits1(gb); 00745 if (v->ttmbf) 00746 { 00747 v->ttfrm = ff_vc1_ttfrm_to_tt[get_bits(gb, 2)]; 00748 } 00749 } else { 00750 v->ttmbf = 1; 00751 v->ttfrm = TT_8X8; 00752 } 00753 break; 00754 } 00755 00756 if(!v->x8_type) 00757 { 00758 /* AC Syntax */ 00759 v->c_ac_table_index = decode012(gb); 00760 if (v->s.pict_type == FF_I_TYPE || v->s.pict_type == FF_BI_TYPE) 00761 { 00762 v->y_ac_table_index = decode012(gb); 00763 } 00764 /* DC Syntax */ 00765 v->s.dc_table_index = get_bits1(gb); 00766 } 00767 00768 if(v->s.pict_type == FF_BI_TYPE) { 00769 v->s.pict_type = FF_B_TYPE; 00770 v->bi_type = 1; 00771 } 00772 return 0; 00773 } 00774 00775 int vc1_parse_frame_header_adv(VC1Context *v, GetBitContext* gb) 00776 { 00777 int pqindex, lowquant; 00778 int status; 00779 00780 v->p_frame_skipped = 0; 00781 00782 if(v->interlace){ 00783 v->fcm = decode012(gb); 00784 if(v->fcm){ 00785 if(!v->warn_interlaced++) 00786 av_log(v->s.avctx, AV_LOG_ERROR, "Interlaced frames/fields support is not implemented\n"); 00787 return -1; 00788 } 00789 } 00790 switch(get_unary(gb, 0, 4)) { 00791 case 0: 00792 v->s.pict_type = FF_P_TYPE; 00793 break; 00794 case 1: 00795 v->s.pict_type = FF_B_TYPE; 00796 break; 00797 case 2: 00798 v->s.pict_type = FF_I_TYPE; 00799 break; 00800 case 3: 00801 v->s.pict_type = FF_BI_TYPE; 00802 break; 00803 case 4: 00804 v->s.pict_type = FF_P_TYPE; // skipped pic 00805 v->p_frame_skipped = 1; 00806 return 0; 00807 } 00808 if(v->tfcntrflag) 00809 skip_bits(gb, 8); 00810 if(v->broadcast) { 00811 if(!v->interlace || v->psf) { 00812 v->rptfrm = get_bits(gb, 2); 00813 } else { 00814 v->tff = get_bits1(gb); 00815 v->rptfrm = get_bits1(gb); 00816 } 00817 } 00818 if(v->panscanflag) { 00819 //... 00820 } 00821 v->rnd = get_bits1(gb); 00822 if(v->interlace) 00823 v->uvsamp = get_bits1(gb); 00824 if(v->finterpflag) v->interpfrm = get_bits1(gb); 00825 if(v->s.pict_type == FF_B_TYPE) { 00826 v->bfraction_lut_index = get_vlc2(gb, ff_vc1_bfraction_vlc.table, VC1_BFRACTION_VLC_BITS, 1); 00827 v->bfraction = ff_vc1_bfraction_lut[v->bfraction_lut_index]; 00828 if(v->bfraction == 0) { 00829 v->s.pict_type = FF_BI_TYPE; /* XXX: should not happen here */ 00830 } 00831 } 00832 pqindex = get_bits(gb, 5); 00833 if(!pqindex) return -1; 00834 v->pqindex = pqindex; 00835 if (v->quantizer_mode == QUANT_FRAME_IMPLICIT) 00836 v->pq = ff_vc1_pquant_table[0][pqindex]; 00837 else 00838 v->pq = ff_vc1_pquant_table[1][pqindex]; 00839 00840 v->pquantizer = 1; 00841 if (v->quantizer_mode == QUANT_FRAME_IMPLICIT) 00842 v->pquantizer = pqindex < 9; 00843 if (v->quantizer_mode == QUANT_NON_UNIFORM) 00844 v->pquantizer = 0; 00845 v->pqindex = pqindex; 00846 if (pqindex < 9) v->halfpq = get_bits1(gb); 00847 else v->halfpq = 0; 00848 if (v->quantizer_mode == QUANT_FRAME_EXPLICIT) 00849 v->pquantizer = get_bits1(gb); 00850 if(v->postprocflag) 00851 v->postproc = get_bits(gb, 2); 00852 00853 if(v->s.pict_type == FF_I_TYPE || v->s.pict_type == FF_P_TYPE) v->use_ic = 0; 00854 00855 if(v->parse_only) 00856 return 0; 00857 00858 switch(v->s.pict_type) { 00859 case FF_I_TYPE: 00860 case FF_BI_TYPE: 00861 status = bitplane_decoding(v->acpred_plane, &v->acpred_is_raw, v); 00862 if (status < 0) return -1; 00863 av_log(v->s.avctx, AV_LOG_DEBUG, "ACPRED plane encoding: " 00864 "Imode: %i, Invert: %i\n", status>>1, status&1); 00865 v->condover = CONDOVER_NONE; 00866 if(v->overlap && v->pq <= 8) { 00867 v->condover = decode012(gb); 00868 if(v->condover == CONDOVER_SELECT) { 00869 status = bitplane_decoding(v->over_flags_plane, &v->overflg_is_raw, v); 00870 if (status < 0) return -1; 00871 av_log(v->s.avctx, AV_LOG_DEBUG, "CONDOVER plane encoding: " 00872 "Imode: %i, Invert: %i\n", status>>1, status&1); 00873 } 00874 } 00875 break; 00876 case FF_P_TYPE: 00877 if (v->extended_mv) v->mvrange = get_unary(gb, 0, 3); 00878 else v->mvrange = 0; 00879 v->k_x = v->mvrange + 9 + (v->mvrange >> 1); //k_x can be 9 10 12 13 00880 v->k_y = v->mvrange + 8; //k_y can be 8 9 10 11 00881 v->range_x = 1 << (v->k_x - 1); 00882 v->range_y = 1 << (v->k_y - 1); 00883 00884 if (v->pq < 5) v->tt_index = 0; 00885 else if(v->pq < 13) v->tt_index = 1; 00886 else v->tt_index = 2; 00887 00888 lowquant = (v->pq > 12) ? 0 : 1; 00889 v->mv_mode = ff_vc1_mv_pmode_table[lowquant][get_unary(gb, 1, 4)]; 00890 if (v->mv_mode == MV_PMODE_INTENSITY_COMP) 00891 { 00892 int scale, shift, i; 00893 v->mv_mode2 = ff_vc1_mv_pmode_table2[lowquant][get_unary(gb, 1, 3)]; 00894 v->lumscale = get_bits(gb, 6); 00895 v->lumshift = get_bits(gb, 6); 00896 /* fill lookup tables for intensity compensation */ 00897 if(!v->lumscale) { 00898 scale = -64; 00899 shift = (255 - v->lumshift * 2) << 6; 00900 if(v->lumshift > 31) 00901 shift += 128 << 6; 00902 } else { 00903 scale = v->lumscale + 32; 00904 if(v->lumshift > 31) 00905 shift = (v->lumshift - 64) << 6; 00906 else 00907 shift = v->lumshift << 6; 00908 } 00909 for(i = 0; i < 256; i++) { 00910 v->luty[i] = av_clip_uint8((scale * i + shift + 32) >> 6); 00911 v->lutuv[i] = av_clip_uint8((scale * (i - 128) + 128*64 + 32) >> 6); 00912 } 00913 v->use_ic = 1; 00914 } 00915 if(v->mv_mode == MV_PMODE_1MV_HPEL || v->mv_mode == MV_PMODE_1MV_HPEL_BILIN) 00916 v->s.quarter_sample = 0; 00917 else if(v->mv_mode == MV_PMODE_INTENSITY_COMP) { 00918 if(v->mv_mode2 == MV_PMODE_1MV_HPEL || v->mv_mode2 == MV_PMODE_1MV_HPEL_BILIN) 00919 v->s.quarter_sample = 0; 00920 else 00921 v->s.quarter_sample = 1; 00922 } else 00923 v->s.quarter_sample = 1; 00924 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)); 00925 00926 if ((v->mv_mode == MV_PMODE_INTENSITY_COMP && 00927 v->mv_mode2 == MV_PMODE_MIXED_MV) 00928 || v->mv_mode == MV_PMODE_MIXED_MV) 00929 { 00930 status = bitplane_decoding(v->mv_type_mb_plane, &v->mv_type_is_raw, v); 00931 if (status < 0) return -1; 00932 av_log(v->s.avctx, AV_LOG_DEBUG, "MB MV Type plane encoding: " 00933 "Imode: %i, Invert: %i\n", status>>1, status&1); 00934 } else { 00935 v->mv_type_is_raw = 0; 00936 memset(v->mv_type_mb_plane, 0, v->s.mb_stride * v->s.mb_height); 00937 } 00938 status = bitplane_decoding(v->s.mbskip_table, &v->skip_is_raw, v); 00939 if (status < 0) return -1; 00940 av_log(v->s.avctx, AV_LOG_DEBUG, "MB Skip plane encoding: " 00941 "Imode: %i, Invert: %i\n", status>>1, status&1); 00942 00943 /* Hopefully this is correct for P frames */ 00944 v->s.mv_table_index = get_bits(gb, 2); //but using ff_vc1_ tables 00945 v->cbpcy_vlc = &ff_vc1_cbpcy_p_vlc[get_bits(gb, 2)]; 00946 if (v->dquant) 00947 { 00948 av_log(v->s.avctx, AV_LOG_DEBUG, "VOP DQuant info\n"); 00949 vop_dquant_decoding(v); 00950 } 00951 00952 v->ttfrm = 0; //FIXME Is that so ? 00953 if (v->vstransform) 00954 { 00955 v->ttmbf = get_bits1(gb); 00956 if (v->ttmbf) 00957 { 00958 v->ttfrm = ff_vc1_ttfrm_to_tt[get_bits(gb, 2)]; 00959 } 00960 } else { 00961 v->ttmbf = 1; 00962 v->ttfrm = TT_8X8; 00963 } 00964 break; 00965 case FF_B_TYPE: 00966 if (v->extended_mv) v->mvrange = get_unary(gb, 0, 3); 00967 else v->mvrange = 0; 00968 v->k_x = v->mvrange + 9 + (v->mvrange >> 1); //k_x can be 9 10 12 13 00969 v->k_y = v->mvrange + 8; //k_y can be 8 9 10 11 00970 v->range_x = 1 << (v->k_x - 1); 00971 v->range_y = 1 << (v->k_y - 1); 00972 00973 if (v->pq < 5) v->tt_index = 0; 00974 else if(v->pq < 13) v->tt_index = 1; 00975 else v->tt_index = 2; 00976 00977 v->mv_mode = get_bits1(gb) ? MV_PMODE_1MV : MV_PMODE_1MV_HPEL_BILIN; 00978 v->s.quarter_sample = (v->mv_mode == MV_PMODE_1MV); 00979 v->s.mspel = v->s.quarter_sample; 00980 00981 status = bitplane_decoding(v->direct_mb_plane, &v->dmb_is_raw, v); 00982 if (status < 0) return -1; 00983 av_log(v->s.avctx, AV_LOG_DEBUG, "MB Direct Type plane encoding: " 00984 "Imode: %i, Invert: %i\n", status>>1, status&1); 00985 status = bitplane_decoding(v->s.mbskip_table, &v->skip_is_raw, v); 00986 if (status < 0) return -1; 00987 av_log(v->s.avctx, AV_LOG_DEBUG, "MB Skip plane encoding: " 00988 "Imode: %i, Invert: %i\n", status>>1, status&1); 00989 00990 v->s.mv_table_index = get_bits(gb, 2); 00991 v->cbpcy_vlc = &ff_vc1_cbpcy_p_vlc[get_bits(gb, 2)]; 00992 00993 if (v->dquant) 00994 { 00995 av_log(v->s.avctx, AV_LOG_DEBUG, "VOP DQuant info\n"); 00996 vop_dquant_decoding(v); 00997 } 00998 00999 v->ttfrm = 0; 01000 if (v->vstransform) 01001 { 01002 v->ttmbf = get_bits1(gb); 01003 if (v->ttmbf) 01004 { 01005 v->ttfrm = ff_vc1_ttfrm_to_tt[get_bits(gb, 2)]; 01006 } 01007 } else { 01008 v->ttmbf = 1; 01009 v->ttfrm = TT_8X8; 01010 } 01011 break; 01012 } 01013 01014 /* AC Syntax */ 01015 v->c_ac_table_index = decode012(gb); 01016 if (v->s.pict_type == FF_I_TYPE || v->s.pict_type == FF_BI_TYPE) 01017 { 01018 v->y_ac_table_index = decode012(gb); 01019 } 01020 /* DC Syntax */ 01021 v->s.dc_table_index = get_bits1(gb); 01022 if ((v->s.pict_type == FF_I_TYPE || v->s.pict_type == FF_BI_TYPE) && v->dquant) { 01023 av_log(v->s.avctx, AV_LOG_DEBUG, "VOP DQuant info\n"); 01024 vop_dquant_decoding(v); 01025 } 01026 01027 v->bi_type = 0; 01028 if(v->s.pict_type == FF_BI_TYPE) { 01029 v->s.pict_type = FF_B_TYPE; 01030 v->bi_type = 1; 01031 } 01032 return 0; 01033 }