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
6 * This file is part of FFmpeg.
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.
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.
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
25 * VC-1 and WMV3 decoder common code
31 #include "mpegvideo.h"
34 #include "msmpeg4data.h"
36 #include "simple_idct.h"
41 /***********************************************************************/
43 * @defgroup vc1bitplane VC-1 Bitplane decoding
61 /** @} */ //imode defines
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
69 static void decode_rowskip(uint8_t* plane, int width, int height, int stride, GetBitContext *gb){
72 for (y=0; y<height; y++){
73 if (!get_bits1(gb)) //rowskip
74 memset(plane, 0, width);
76 for (x=0; x<width; x++)
77 plane[x] = get_bits1(gb);
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
89 static void decode_colskip(uint8_t* plane, int width, int height, int stride, GetBitContext *gb){
92 for (x=0; x<width; x++){
93 if (!get_bits1(gb)) //colskip
94 for (y=0; y<height; y++)
97 for (y=0; y<height; y++)
98 plane[y*stride] = get_bits1(gb);
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
108 * @todo FIXME: Optimize
110 static int bitplane_decoding(uint8_t* data, int *raw_flag, VC1Context *v)
112 GetBitContext *gb = &v->s.gb;
114 int imode, x, y, code, offset;
115 uint8_t invert, *planep = data;
116 int width, height, stride;
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);
128 //Data is actually read in the MB layer (same for all tests == "raw")
129 *raw_flag = 1; //invert ignored
133 if ((height * width) & 1)
135 *planep++ = get_bits1(gb);
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;
144 if(offset == width) {
146 planep += stride - width;
148 *planep++ = code >> 1;
150 if(offset == width) {
152 planep += stride - width;
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);
163 av_log(v->s.avctx, AV_LOG_DEBUG, "invalid NORM-6 VLC\n");
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;
173 planep += stride * 3;
175 if(width & 1) decode_colskip(data, 1, height, stride, &v->s.gb);
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);
182 av_log(v->s.avctx, AV_LOG_DEBUG, "invalid NORM-6 VLC\n");
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;
192 planep += stride * 2;
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);
200 decode_rowskip(data, width, height, stride, &v->s.gb);
203 decode_colskip(data, width, height, stride, &v->s.gb);
208 /* Applying diff operator */
209 if (imode == IMODE_DIFF2 || imode == IMODE_DIFF6)
213 for (x=1; x<width; x++)
214 planep[x] ^= planep[x-1];
215 for (y=1; y<height; y++)
218 planep[0] ^= planep[-stride];
219 for (x=1; x<width; x++)
221 if (planep[x-1] != planep[x-stride]) planep[x] ^= invert;
222 else planep[x] ^= planep[x-1];
229 for (x=0; x<stride*height; x++) planep[x] = !planep[x]; //FIXME stride
231 return (imode<<1) + invert;
234 /** @} */ //Bitplane group
236 /***********************************************************************/
237 /** VOP Dquant decoding
238 * @param v VC-1 Context
240 static int vop_dquant_decoding(VC1Context *v)
242 GetBitContext *gb = &v->s.gb;
248 pqdiff = get_bits(gb, 3);
249 if (pqdiff == 7) v->altpq = get_bits(gb, 5);
250 else v->altpq = v->pq + pqdiff + 1;
254 v->dquantfrm = get_bits1(gb);
257 v->dqprofile = get_bits(gb, 2);
258 switch (v->dqprofile)
260 case DQPROFILE_SINGLE_EDGE:
261 case DQPROFILE_DOUBLE_EDGES:
262 v->dqsbedge = get_bits(gb, 2);
264 case DQPROFILE_ALL_MBS:
265 v->dqbilevel = get_bits1(gb);
268 default: break; //Forbidden ?
270 if (v->dqbilevel || v->dqprofile != DQPROFILE_ALL_MBS)
272 pqdiff = get_bits(gb, 3);
273 if (pqdiff == 7) v->altpq = get_bits(gb, 5);
274 else v->altpq = v->pq + pqdiff + 1;
281 static int decode_sequence_header_adv(VC1Context *v, GetBitContext *gb);
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
290 int vc1_decode_sequence_header(AVCodecContext *avctx, VC1Context *v, GetBitContext *gb)
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)
296 av_log(avctx, AV_LOG_WARNING, "WMV3 Complex Profile is not fully supported\n");
299 if (v->profile == PROFILE_ADVANCED)
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);
307 v->zz_8x4 = wmv2_scantableA;
308 v->zz_4x8 = wmv2_scantableB;
309 v->res_y411 = get_bits1(gb);
310 v->res_sprite = get_bits1(gb);
313 av_log(avctx, AV_LOG_ERROR,
314 "Old interlaced mode is not supported\n");
318 av_log(avctx, AV_LOG_ERROR, "WMVP is not fully supported\n");
323 v->frmrtq_postproc = get_bits(gb, 3); //common
324 // (bitrate-32kbps)/64kbps
325 v->bitrtq_postproc = get_bits(gb, 5); //common
326 v->s.loop_filter = get_bits1(gb); //common
327 if(v->s.loop_filter == 1 && v->profile == PROFILE_SIMPLE)
329 av_log(avctx, AV_LOG_ERROR,
330 "LOOPFILTER shall not be enabled in Simple Profile\n");
332 if(v->s.avctx->skip_loop_filter >= AVDISCARD_ALL)
333 v->s.loop_filter = 0;
335 v->res_x8 = get_bits1(gb); //reserved
336 v->multires = get_bits1(gb);
337 v->res_fasttx = get_bits1(gb);
340 v->vc1dsp.vc1_inv_trans_8x8 = ff_simple_idct;
341 v->vc1dsp.vc1_inv_trans_8x4 = ff_simple_idct84_add;
342 v->vc1dsp.vc1_inv_trans_4x8 = ff_simple_idct48_add;
343 v->vc1dsp.vc1_inv_trans_4x4 = ff_simple_idct44_add;
344 v->vc1dsp.vc1_inv_trans_8x8_dc = ff_simple_idct_add;
345 v->vc1dsp.vc1_inv_trans_8x4_dc = ff_simple_idct84_add;
346 v->vc1dsp.vc1_inv_trans_4x8_dc = ff_simple_idct48_add;
347 v->vc1dsp.vc1_inv_trans_4x4_dc = ff_simple_idct44_add;
350 v->fastuvmc = get_bits1(gb); //common
351 if (!v->profile && !v->fastuvmc)
353 av_log(avctx, AV_LOG_ERROR,
354 "FASTUVMC unavailable in Simple Profile\n");
357 v->extended_mv = get_bits1(gb); //common
358 if (!v->profile && v->extended_mv)
360 av_log(avctx, AV_LOG_ERROR,
361 "Extended MVs unavailable in Simple Profile\n");
364 v->dquant = get_bits(gb, 2); //common
365 v->vstransform = get_bits1(gb); //common
367 v->res_transtab = get_bits1(gb);
370 av_log(avctx, AV_LOG_ERROR,
371 "1 for reserved RES_TRANSTAB is forbidden\n");
375 v->overlap = get_bits1(gb); //common
377 v->s.resync_marker = get_bits1(gb);
378 v->rangered = get_bits1(gb);
379 if (v->rangered && v->profile == PROFILE_SIMPLE)
381 av_log(avctx, AV_LOG_INFO,
382 "RANGERED should be set to 0 in Simple Profile\n");
385 v->s.max_b_frames = avctx->max_b_frames = get_bits(gb, 3); //common
386 v->quantizer_mode = get_bits(gb, 2); //common
388 v->finterpflag = get_bits1(gb); //common
391 v->s.avctx->width = v->s.avctx->coded_width = get_bits(gb, 11);
392 v->s.avctx->height = v->s.avctx->coded_height = get_bits(gb, 11);
393 skip_bits(gb, 5); //frame rate
394 v->res_x8 = get_bits1(gb);
395 if (get_bits1(gb)) { // something to do with DC VLC selection
396 av_log(avctx, AV_LOG_ERROR, "Unsupported sprite feature\n");
399 skip_bits(gb, 3); //slice code
402 v->res_rtm_flag = get_bits1(gb); //reserved
404 if (!v->res_rtm_flag)
406 // av_log(avctx, AV_LOG_ERROR,
407 // "0 for reserved RES_RTM_FLAG is forbidden\n");
408 av_log(avctx, AV_LOG_ERROR,
409 "Old WMV3 version detected, some frames may be decoded incorrectly\n");
412 //TODO: figure out what they mean (always 0x402F)
413 if(!v->res_fasttx) skip_bits(gb, 16);
414 av_log(avctx, AV_LOG_DEBUG,
415 "Profile %i:\nfrmrtq_postproc=%i, bitrtq_postproc=%i\n"
416 "LoopFilter=%i, MultiRes=%i, FastUVMC=%i, Extended MV=%i\n"
417 "Rangered=%i, VSTransform=%i, Overlap=%i, SyncMarker=%i\n"
418 "DQuant=%i, Quantizer mode=%i, Max B frames=%i\n",
419 v->profile, v->frmrtq_postproc, v->bitrtq_postproc,
420 v->s.loop_filter, v->multires, v->fastuvmc, v->extended_mv,
421 v->rangered, v->vstransform, v->overlap, v->s.resync_marker,
422 v->dquant, v->quantizer_mode, avctx->max_b_frames
427 static int decode_sequence_header_adv(VC1Context *v, GetBitContext *gb)
430 v->level = get_bits(gb, 3);
433 av_log(v->s.avctx, AV_LOG_ERROR, "Reserved LEVEL %i\n",v->level);
435 v->chromaformat = get_bits(gb, 2);
436 if (v->chromaformat != 1)
438 av_log(v->s.avctx, AV_LOG_ERROR,
439 "Only 4:2:0 chroma format supported\n");
444 v->frmrtq_postproc = get_bits(gb, 3); //common
445 // (bitrate-32kbps)/64kbps
446 v->bitrtq_postproc = get_bits(gb, 5); //common
447 v->postprocflag = get_bits1(gb); //common
449 v->s.avctx->coded_width = (get_bits(gb, 12) + 1) << 1;
450 v->s.avctx->coded_height = (get_bits(gb, 12) + 1) << 1;
451 v->s.avctx->width = v->s.avctx->coded_width;
452 v->s.avctx->height = v->s.avctx->coded_height;
453 v->broadcast = get_bits1(gb);
454 v->interlace = get_bits1(gb);
455 v->tfcntrflag = get_bits1(gb);
456 v->finterpflag = get_bits1(gb);
457 skip_bits1(gb); // reserved
459 v->s.h_edge_pos = v->s.avctx->coded_width;
460 v->s.v_edge_pos = v->s.avctx->coded_height;
462 av_log(v->s.avctx, AV_LOG_DEBUG,
463 "Advanced Profile level %i:\nfrmrtq_postproc=%i, bitrtq_postproc=%i\n"
464 "LoopFilter=%i, ChromaFormat=%i, Pulldown=%i, Interlace: %i\n"
465 "TFCTRflag=%i, FINTERPflag=%i\n",
466 v->level, v->frmrtq_postproc, v->bitrtq_postproc,
467 v->s.loop_filter, v->chromaformat, v->broadcast, v->interlace,
468 v->tfcntrflag, v->finterpflag
471 v->psf = get_bits1(gb);
472 if(v->psf) { //PsF, 6.1.13
473 av_log(v->s.avctx, AV_LOG_ERROR, "Progressive Segmented Frame mode: not supported (yet)\n");
476 v->s.max_b_frames = v->s.avctx->max_b_frames = 7;
477 if(get_bits1(gb)) { //Display Info - decoding is not affected by it
479 av_log(v->s.avctx, AV_LOG_DEBUG, "Display extended info:\n");
480 v->s.avctx->width = w = get_bits(gb, 14) + 1;
481 v->s.avctx->height = h = get_bits(gb, 14) + 1;
482 av_log(v->s.avctx, AV_LOG_DEBUG, "Display dimensions: %ix%i\n", w, h);
484 ar = get_bits(gb, 4);
486 v->s.avctx->sample_aspect_ratio = ff_vc1_pixel_aspect[ar];
490 v->s.avctx->sample_aspect_ratio = (AVRational){w, h};
492 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);
494 if(get_bits1(gb)){ //framerate stuff
496 v->s.avctx->time_base.num = 32;
497 v->s.avctx->time_base.den = get_bits(gb, 16) + 1;
500 nr = get_bits(gb, 8);
501 dr = get_bits(gb, 4);
502 if(nr && nr < 8 && dr && dr < 3){
503 v->s.avctx->time_base.num = ff_vc1_fps_dr[dr - 1];
504 v->s.avctx->time_base.den = ff_vc1_fps_nr[nr - 1] * 1000;
510 v->color_prim = get_bits(gb, 8);
511 v->transfer_char = get_bits(gb, 8);
512 v->matrix_coef = get_bits(gb, 8);
516 v->hrd_param_flag = get_bits1(gb);
517 if(v->hrd_param_flag) {
519 v->hrd_num_leaky_buckets = get_bits(gb, 5);
520 skip_bits(gb, 4); //bitrate exponent
521 skip_bits(gb, 4); //buffer size exponent
522 for(i = 0; i < v->hrd_num_leaky_buckets; i++) {
523 skip_bits(gb, 16); //hrd_rate[n]
524 skip_bits(gb, 16); //hrd_buffer[n]
530 int vc1_decode_entry_point(AVCodecContext *avctx, VC1Context *v, GetBitContext *gb)
534 av_log(avctx, AV_LOG_DEBUG, "Entry point: %08X\n", show_bits_long(gb, 32));
535 v->broken_link = get_bits1(gb);
536 v->closed_entry = get_bits1(gb);
537 v->panscanflag = get_bits1(gb);
538 v->refdist_flag = get_bits1(gb);
539 v->s.loop_filter = get_bits1(gb);
540 v->fastuvmc = get_bits1(gb);
541 v->extended_mv = get_bits1(gb);
542 v->dquant = get_bits(gb, 2);
543 v->vstransform = get_bits1(gb);
544 v->overlap = get_bits1(gb);
545 v->quantizer_mode = get_bits(gb, 2);
547 if(v->hrd_param_flag){
548 for(i = 0; i < v->hrd_num_leaky_buckets; i++) {
549 skip_bits(gb, 8); //hrd_full[n]
554 avctx->coded_width = (get_bits(gb, 12)+1)<<1;
555 avctx->coded_height = (get_bits(gb, 12)+1)<<1;
558 v->extended_dmv = get_bits1(gb);
559 if((v->range_mapy_flag = get_bits1(gb))) {
560 av_log(avctx, AV_LOG_ERROR, "Luma scaling is not supported, expect wrong picture\n");
561 v->range_mapy = get_bits(gb, 3);
563 if((v->range_mapuv_flag = get_bits1(gb))) {
564 av_log(avctx, AV_LOG_ERROR, "Chroma scaling is not supported, expect wrong picture\n");
565 v->range_mapuv = get_bits(gb, 3);
568 av_log(avctx, AV_LOG_DEBUG, "Entry point info:\n"
569 "BrokenLink=%i, ClosedEntry=%i, PanscanFlag=%i\n"
570 "RefDist=%i, Postproc=%i, FastUVMC=%i, ExtMV=%i\n"
571 "DQuant=%i, VSTransform=%i, Overlap=%i, Qmode=%i\n",
572 v->broken_link, v->closed_entry, v->panscanflag, v->refdist_flag, v->s.loop_filter,
573 v->fastuvmc, v->extended_mv, v->dquant, v->vstransform, v->overlap, v->quantizer_mode);
578 int vc1_parse_frame_header(VC1Context *v, GetBitContext* gb)
580 int pqindex, lowquant, status;
582 if(v->finterpflag) v->interpfrm = get_bits1(gb);
583 skip_bits(gb, 2); //framecnt unused
585 if (v->rangered) v->rangeredfrm = get_bits1(gb);
586 v->s.pict_type = get_bits1(gb);
587 if (v->s.avctx->max_b_frames) {
588 if (!v->s.pict_type) {
589 if (get_bits1(gb)) v->s.pict_type = AV_PICTURE_TYPE_I;
590 else v->s.pict_type = AV_PICTURE_TYPE_B;
591 } else v->s.pict_type = AV_PICTURE_TYPE_P;
592 } else v->s.pict_type = v->s.pict_type ? AV_PICTURE_TYPE_P : AV_PICTURE_TYPE_I;
595 if(v->s.pict_type == AV_PICTURE_TYPE_B) {
596 v->bfraction_lut_index = get_vlc2(gb, ff_vc1_bfraction_vlc.table, VC1_BFRACTION_VLC_BITS, 1);
597 v->bfraction = ff_vc1_bfraction_lut[v->bfraction_lut_index];
598 if(v->bfraction == 0) {
599 v->s.pict_type = AV_PICTURE_TYPE_BI;
602 if(v->s.pict_type == AV_PICTURE_TYPE_I || v->s.pict_type == AV_PICTURE_TYPE_BI)
603 skip_bits(gb, 7); // skip buffer fullness
609 if(v->s.pict_type == AV_PICTURE_TYPE_I || v->s.pict_type == AV_PICTURE_TYPE_BI)
611 if(v->s.pict_type == AV_PICTURE_TYPE_P)
614 /* Quantizer stuff */
615 pqindex = get_bits(gb, 5);
616 if(!pqindex) return -1;
617 if (v->quantizer_mode == QUANT_FRAME_IMPLICIT)
618 v->pq = ff_vc1_pquant_table[0][pqindex];
620 v->pq = ff_vc1_pquant_table[1][pqindex];
623 if (v->quantizer_mode == QUANT_FRAME_IMPLICIT)
624 v->pquantizer = pqindex < 9;
625 if (v->quantizer_mode == QUANT_NON_UNIFORM)
627 v->pqindex = pqindex;
628 if (pqindex < 9) v->halfpq = get_bits1(gb);
630 if (v->quantizer_mode == QUANT_FRAME_EXPLICIT)
631 v->pquantizer = get_bits1(gb);
633 if (v->extended_mv == 1) v->mvrange = get_unary(gb, 0, 3);
634 v->k_x = v->mvrange + 9 + (v->mvrange >> 1); //k_x can be 9 10 12 13
635 v->k_y = v->mvrange + 8; //k_y can be 8 9 10 11
636 v->range_x = 1 << (v->k_x - 1);
637 v->range_y = 1 << (v->k_y - 1);
638 if (v->multires && v->s.pict_type != AV_PICTURE_TYPE_B) v->respic = get_bits(gb, 2);
640 if(v->res_x8 && (v->s.pict_type == AV_PICTURE_TYPE_I || v->s.pict_type == AV_PICTURE_TYPE_BI)){
641 v->x8_type = get_bits1(gb);
642 }else v->x8_type = 0;
643 //av_log(v->s.avctx, AV_LOG_INFO, "%c Frame: QP=[%i]%i (+%i/2) %i\n",
644 // (v->s.pict_type == AV_PICTURE_TYPE_P) ? 'P' : ((v->s.pict_type == AV_PICTURE_TYPE_I) ? 'I' : 'B'), pqindex, v->pq, v->halfpq, v->rangeredfrm);
646 if(v->s.pict_type == AV_PICTURE_TYPE_I || v->s.pict_type == AV_PICTURE_TYPE_P) v->use_ic = 0;
648 switch(v->s.pict_type) {
649 case AV_PICTURE_TYPE_P:
650 if (v->pq < 5) v->tt_index = 0;
651 else if(v->pq < 13) v->tt_index = 1;
652 else v->tt_index = 2;
654 lowquant = (v->pq > 12) ? 0 : 1;
655 v->mv_mode = ff_vc1_mv_pmode_table[lowquant][get_unary(gb, 1, 4)];
656 if (v->mv_mode == MV_PMODE_INTENSITY_COMP)
659 v->mv_mode2 = ff_vc1_mv_pmode_table2[lowquant][get_unary(gb, 1, 3)];
660 v->lumscale = get_bits(gb, 6);
661 v->lumshift = get_bits(gb, 6);
663 /* fill lookup tables for intensity compensation */
666 shift = (255 - v->lumshift * 2) << 6;
670 scale = v->lumscale + 32;
672 shift = (v->lumshift - 64) << 6;
674 shift = v->lumshift << 6;
676 for(i = 0; i < 256; i++) {
677 v->luty[i] = av_clip_uint8((scale * i + shift + 32) >> 6);
678 v->lutuv[i] = av_clip_uint8((scale * (i - 128) + 128*64 + 32) >> 6);
681 if(v->mv_mode == MV_PMODE_1MV_HPEL || v->mv_mode == MV_PMODE_1MV_HPEL_BILIN)
682 v->s.quarter_sample = 0;
683 else if(v->mv_mode == MV_PMODE_INTENSITY_COMP) {
684 if(v->mv_mode2 == MV_PMODE_1MV_HPEL || v->mv_mode2 == MV_PMODE_1MV_HPEL_BILIN)
685 v->s.quarter_sample = 0;
687 v->s.quarter_sample = 1;
689 v->s.quarter_sample = 1;
690 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));
692 if ((v->mv_mode == MV_PMODE_INTENSITY_COMP &&
693 v->mv_mode2 == MV_PMODE_MIXED_MV)
694 || v->mv_mode == MV_PMODE_MIXED_MV)
696 status = bitplane_decoding(v->mv_type_mb_plane, &v->mv_type_is_raw, v);
697 if (status < 0) return -1;
698 av_log(v->s.avctx, AV_LOG_DEBUG, "MB MV Type plane encoding: "
699 "Imode: %i, Invert: %i\n", status>>1, status&1);
701 v->mv_type_is_raw = 0;
702 memset(v->mv_type_mb_plane, 0, v->s.mb_stride * v->s.mb_height);
704 status = bitplane_decoding(v->s.mbskip_table, &v->skip_is_raw, v);
705 if (status < 0) return -1;
706 av_log(v->s.avctx, AV_LOG_DEBUG, "MB Skip plane encoding: "
707 "Imode: %i, Invert: %i\n", status>>1, status&1);
709 /* Hopefully this is correct for P frames */
710 v->s.mv_table_index = get_bits(gb, 2); //but using ff_vc1_ tables
711 v->cbpcy_vlc = &ff_vc1_cbpcy_p_vlc[get_bits(gb, 2)];
715 av_log(v->s.avctx, AV_LOG_DEBUG, "VOP DQuant info\n");
716 vop_dquant_decoding(v);
719 v->ttfrm = 0; //FIXME Is that so ?
722 v->ttmbf = get_bits1(gb);
725 v->ttfrm = ff_vc1_ttfrm_to_tt[get_bits(gb, 2)];
732 case AV_PICTURE_TYPE_B:
733 if (v->pq < 5) v->tt_index = 0;
734 else if(v->pq < 13) v->tt_index = 1;
735 else v->tt_index = 2;
737 v->mv_mode = get_bits1(gb) ? MV_PMODE_1MV : MV_PMODE_1MV_HPEL_BILIN;
738 v->s.quarter_sample = (v->mv_mode == MV_PMODE_1MV);
739 v->s.mspel = v->s.quarter_sample;
741 status = bitplane_decoding(v->direct_mb_plane, &v->dmb_is_raw, v);
742 if (status < 0) return -1;
743 av_log(v->s.avctx, AV_LOG_DEBUG, "MB Direct Type plane encoding: "
744 "Imode: %i, Invert: %i\n", status>>1, status&1);
745 status = bitplane_decoding(v->s.mbskip_table, &v->skip_is_raw, v);
746 if (status < 0) return -1;
747 av_log(v->s.avctx, AV_LOG_DEBUG, "MB Skip plane encoding: "
748 "Imode: %i, Invert: %i\n", status>>1, status&1);
750 v->s.mv_table_index = get_bits(gb, 2);
751 v->cbpcy_vlc = &ff_vc1_cbpcy_p_vlc[get_bits(gb, 2)];
755 av_log(v->s.avctx, AV_LOG_DEBUG, "VOP DQuant info\n");
756 vop_dquant_decoding(v);
762 v->ttmbf = get_bits1(gb);
765 v->ttfrm = ff_vc1_ttfrm_to_tt[get_bits(gb, 2)];
777 v->c_ac_table_index = decode012(gb);
778 if (v->s.pict_type == AV_PICTURE_TYPE_I || v->s.pict_type == AV_PICTURE_TYPE_BI)
780 v->y_ac_table_index = decode012(gb);
783 v->s.dc_table_index = get_bits1(gb);
786 if(v->s.pict_type == AV_PICTURE_TYPE_BI) {
787 v->s.pict_type = AV_PICTURE_TYPE_B;
793 int vc1_parse_frame_header_adv(VC1Context *v, GetBitContext* gb)
795 int pqindex, lowquant;
798 v->p_frame_skipped = 0;
801 v->fcm = decode012(gb);
803 if(!v->warn_interlaced++)
804 av_log(v->s.avctx, AV_LOG_ERROR, "Interlaced frames/fields support is not implemented\n");
808 switch(get_unary(gb, 0, 4)) {
810 v->s.pict_type = AV_PICTURE_TYPE_P;
813 v->s.pict_type = AV_PICTURE_TYPE_B;
816 v->s.pict_type = AV_PICTURE_TYPE_I;
819 v->s.pict_type = AV_PICTURE_TYPE_BI;
822 v->s.pict_type = AV_PICTURE_TYPE_P; // skipped pic
823 v->p_frame_skipped = 1;
829 if(!v->interlace || v->psf) {
830 v->rptfrm = get_bits(gb, 2);
832 v->tff = get_bits1(gb);
833 v->rff = get_bits1(gb);
837 av_log_missing_feature(v->s.avctx, "Pan-scan", 0);
840 v->rnd = get_bits1(gb);
842 v->uvsamp = get_bits1(gb);
843 if(v->finterpflag) v->interpfrm = get_bits1(gb);
844 if(v->s.pict_type == AV_PICTURE_TYPE_B) {
845 v->bfraction_lut_index = get_vlc2(gb, ff_vc1_bfraction_vlc.table, VC1_BFRACTION_VLC_BITS, 1);
846 v->bfraction = ff_vc1_bfraction_lut[v->bfraction_lut_index];
847 if(v->bfraction == 0) {
848 v->s.pict_type = AV_PICTURE_TYPE_BI; /* XXX: should not happen here */
851 pqindex = get_bits(gb, 5);
852 if(!pqindex) return -1;
853 v->pqindex = pqindex;
854 if (v->quantizer_mode == QUANT_FRAME_IMPLICIT)
855 v->pq = ff_vc1_pquant_table[0][pqindex];
857 v->pq = ff_vc1_pquant_table[1][pqindex];
860 if (v->quantizer_mode == QUANT_FRAME_IMPLICIT)
861 v->pquantizer = pqindex < 9;
862 if (v->quantizer_mode == QUANT_NON_UNIFORM)
864 v->pqindex = pqindex;
865 if (pqindex < 9) v->halfpq = get_bits1(gb);
867 if (v->quantizer_mode == QUANT_FRAME_EXPLICIT)
868 v->pquantizer = get_bits1(gb);
870 v->postproc = get_bits(gb, 2);
872 if(v->s.pict_type == AV_PICTURE_TYPE_I || v->s.pict_type == AV_PICTURE_TYPE_P) v->use_ic = 0;
877 switch(v->s.pict_type) {
878 case AV_PICTURE_TYPE_I:
879 case AV_PICTURE_TYPE_BI:
880 status = bitplane_decoding(v->acpred_plane, &v->acpred_is_raw, v);
881 if (status < 0) return -1;
882 av_log(v->s.avctx, AV_LOG_DEBUG, "ACPRED plane encoding: "
883 "Imode: %i, Invert: %i\n", status>>1, status&1);
884 v->condover = CONDOVER_NONE;
885 if(v->overlap && v->pq <= 8) {
886 v->condover = decode012(gb);
887 if(v->condover == CONDOVER_SELECT) {
888 status = bitplane_decoding(v->over_flags_plane, &v->overflg_is_raw, v);
889 if (status < 0) return -1;
890 av_log(v->s.avctx, AV_LOG_DEBUG, "CONDOVER plane encoding: "
891 "Imode: %i, Invert: %i\n", status>>1, status&1);
895 case AV_PICTURE_TYPE_P:
896 if (v->extended_mv) v->mvrange = get_unary(gb, 0, 3);
898 v->k_x = v->mvrange + 9 + (v->mvrange >> 1); //k_x can be 9 10 12 13
899 v->k_y = v->mvrange + 8; //k_y can be 8 9 10 11
900 v->range_x = 1 << (v->k_x - 1);
901 v->range_y = 1 << (v->k_y - 1);
903 if (v->pq < 5) v->tt_index = 0;
904 else if(v->pq < 13) v->tt_index = 1;
905 else v->tt_index = 2;
907 lowquant = (v->pq > 12) ? 0 : 1;
908 v->mv_mode = ff_vc1_mv_pmode_table[lowquant][get_unary(gb, 1, 4)];
909 if (v->mv_mode == MV_PMODE_INTENSITY_COMP)
912 v->mv_mode2 = ff_vc1_mv_pmode_table2[lowquant][get_unary(gb, 1, 3)];
913 v->lumscale = get_bits(gb, 6);
914 v->lumshift = get_bits(gb, 6);
915 /* fill lookup tables for intensity compensation */
918 shift = (255 - v->lumshift * 2) << 6;
922 scale = v->lumscale + 32;
924 shift = (v->lumshift - 64) << 6;
926 shift = v->lumshift << 6;
928 for(i = 0; i < 256; i++) {
929 v->luty[i] = av_clip_uint8((scale * i + shift + 32) >> 6);
930 v->lutuv[i] = av_clip_uint8((scale * (i - 128) + 128*64 + 32) >> 6);
934 if(v->mv_mode == MV_PMODE_1MV_HPEL || v->mv_mode == MV_PMODE_1MV_HPEL_BILIN)
935 v->s.quarter_sample = 0;
936 else if(v->mv_mode == MV_PMODE_INTENSITY_COMP) {
937 if(v->mv_mode2 == MV_PMODE_1MV_HPEL || v->mv_mode2 == MV_PMODE_1MV_HPEL_BILIN)
938 v->s.quarter_sample = 0;
940 v->s.quarter_sample = 1;
942 v->s.quarter_sample = 1;
943 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));
945 if ((v->mv_mode == MV_PMODE_INTENSITY_COMP &&
946 v->mv_mode2 == MV_PMODE_MIXED_MV)
947 || v->mv_mode == MV_PMODE_MIXED_MV)
949 status = bitplane_decoding(v->mv_type_mb_plane, &v->mv_type_is_raw, v);
950 if (status < 0) return -1;
951 av_log(v->s.avctx, AV_LOG_DEBUG, "MB MV Type plane encoding: "
952 "Imode: %i, Invert: %i\n", status>>1, status&1);
954 v->mv_type_is_raw = 0;
955 memset(v->mv_type_mb_plane, 0, v->s.mb_stride * v->s.mb_height);
957 status = bitplane_decoding(v->s.mbskip_table, &v->skip_is_raw, v);
958 if (status < 0) return -1;
959 av_log(v->s.avctx, AV_LOG_DEBUG, "MB Skip plane encoding: "
960 "Imode: %i, Invert: %i\n", status>>1, status&1);
962 /* Hopefully this is correct for P frames */
963 v->s.mv_table_index = get_bits(gb, 2); //but using ff_vc1_ tables
964 v->cbpcy_vlc = &ff_vc1_cbpcy_p_vlc[get_bits(gb, 2)];
967 av_log(v->s.avctx, AV_LOG_DEBUG, "VOP DQuant info\n");
968 vop_dquant_decoding(v);
971 v->ttfrm = 0; //FIXME Is that so ?
974 v->ttmbf = get_bits1(gb);
977 v->ttfrm = ff_vc1_ttfrm_to_tt[get_bits(gb, 2)];
984 case AV_PICTURE_TYPE_B:
985 if (v->extended_mv) v->mvrange = get_unary(gb, 0, 3);
987 v->k_x = v->mvrange + 9 + (v->mvrange >> 1); //k_x can be 9 10 12 13
988 v->k_y = v->mvrange + 8; //k_y can be 8 9 10 11
989 v->range_x = 1 << (v->k_x - 1);
990 v->range_y = 1 << (v->k_y - 1);
992 if (v->pq < 5) v->tt_index = 0;
993 else if(v->pq < 13) v->tt_index = 1;
994 else v->tt_index = 2;
996 v->mv_mode = get_bits1(gb) ? MV_PMODE_1MV : MV_PMODE_1MV_HPEL_BILIN;
997 v->s.quarter_sample = (v->mv_mode == MV_PMODE_1MV);
998 v->s.mspel = v->s.quarter_sample;
1000 status = bitplane_decoding(v->direct_mb_plane, &v->dmb_is_raw, v);
1001 if (status < 0) return -1;
1002 av_log(v->s.avctx, AV_LOG_DEBUG, "MB Direct Type plane encoding: "
1003 "Imode: %i, Invert: %i\n", status>>1, status&1);
1004 status = bitplane_decoding(v->s.mbskip_table, &v->skip_is_raw, v);
1005 if (status < 0) return -1;
1006 av_log(v->s.avctx, AV_LOG_DEBUG, "MB Skip plane encoding: "
1007 "Imode: %i, Invert: %i\n", status>>1, status&1);
1009 v->s.mv_table_index = get_bits(gb, 2);
1010 v->cbpcy_vlc = &ff_vc1_cbpcy_p_vlc[get_bits(gb, 2)];
1014 av_log(v->s.avctx, AV_LOG_DEBUG, "VOP DQuant info\n");
1015 vop_dquant_decoding(v);
1021 v->ttmbf = get_bits1(gb);
1024 v->ttfrm = ff_vc1_ttfrm_to_tt[get_bits(gb, 2)];
1034 v->c_ac_table_index = decode012(gb);
1035 if (v->s.pict_type == AV_PICTURE_TYPE_I || v->s.pict_type == AV_PICTURE_TYPE_BI)
1037 v->y_ac_table_index = decode012(gb);
1040 v->s.dc_table_index = get_bits1(gb);
1041 if ((v->s.pict_type == AV_PICTURE_TYPE_I || v->s.pict_type == AV_PICTURE_TYPE_BI) && v->dquant) {
1042 av_log(v->s.avctx, AV_LOG_DEBUG, "VOP DQuant info\n");
1043 vop_dquant_decoding(v);
1047 if(v->s.pict_type == AV_PICTURE_TYPE_BI) {
1048 v->s.pict_type = AV_PICTURE_TYPE_B;