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 * @name 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");
320 v->frmrtq_postproc = get_bits(gb, 3); //common
321 // (bitrate-32kbps)/64kbps
322 v->bitrtq_postproc = get_bits(gb, 5); //common
323 v->s.loop_filter = get_bits1(gb); //common
324 if(v->s.loop_filter == 1 && v->profile == PROFILE_SIMPLE)
326 av_log(avctx, AV_LOG_ERROR,
327 "LOOPFILTER shall not be enabled in Simple Profile\n");
329 if(v->s.avctx->skip_loop_filter >= AVDISCARD_ALL)
330 v->s.loop_filter = 0;
332 v->res_x8 = get_bits1(gb); //reserved
333 v->multires = get_bits1(gb);
334 v->res_fasttx = get_bits1(gb);
337 v->vc1dsp.vc1_inv_trans_8x8 = ff_simple_idct_8;
338 v->vc1dsp.vc1_inv_trans_8x4 = ff_simple_idct84_add;
339 v->vc1dsp.vc1_inv_trans_4x8 = ff_simple_idct48_add;
340 v->vc1dsp.vc1_inv_trans_4x4 = ff_simple_idct44_add;
341 v->vc1dsp.vc1_inv_trans_8x8_dc = ff_simple_idct_add_8;
342 v->vc1dsp.vc1_inv_trans_8x4_dc = ff_simple_idct84_add;
343 v->vc1dsp.vc1_inv_trans_4x8_dc = ff_simple_idct48_add;
344 v->vc1dsp.vc1_inv_trans_4x4_dc = ff_simple_idct44_add;
347 v->fastuvmc = get_bits1(gb); //common
348 if (!v->profile && !v->fastuvmc)
350 av_log(avctx, AV_LOG_ERROR,
351 "FASTUVMC unavailable in Simple Profile\n");
354 v->extended_mv = get_bits1(gb); //common
355 if (!v->profile && v->extended_mv)
357 av_log(avctx, AV_LOG_ERROR,
358 "Extended MVs unavailable in Simple Profile\n");
361 v->dquant = get_bits(gb, 2); //common
362 v->vstransform = get_bits1(gb); //common
364 v->res_transtab = get_bits1(gb);
367 av_log(avctx, AV_LOG_ERROR,
368 "1 for reserved RES_TRANSTAB is forbidden\n");
372 v->overlap = get_bits1(gb); //common
374 v->s.resync_marker = get_bits1(gb);
375 v->rangered = get_bits1(gb);
376 if (v->rangered && v->profile == PROFILE_SIMPLE)
378 av_log(avctx, AV_LOG_INFO,
379 "RANGERED should be set to 0 in Simple Profile\n");
382 v->s.max_b_frames = avctx->max_b_frames = get_bits(gb, 3); //common
383 v->quantizer_mode = get_bits(gb, 2); //common
385 v->finterpflag = get_bits1(gb); //common
388 int w = get_bits(gb, 11);
389 int h = get_bits(gb, 11);
390 avcodec_set_dimensions(v->s.avctx, w, h);
391 skip_bits(gb, 5); //frame rate
392 v->res_x8 = get_bits1(gb);
393 if (get_bits1(gb)) { // something to do with DC VLC selection
394 av_log(avctx, AV_LOG_ERROR, "Unsupported sprite feature\n");
397 skip_bits(gb, 3); //slice code
400 v->res_rtm_flag = get_bits1(gb); //reserved
402 if (!v->res_rtm_flag)
404 // av_log(avctx, AV_LOG_ERROR,
405 // "0 for reserved RES_RTM_FLAG is forbidden\n");
406 av_log(avctx, AV_LOG_ERROR,
407 "Old WMV3 version detected, some frames may be decoded incorrectly\n");
410 //TODO: figure out what they mean (always 0x402F)
411 if(!v->res_fasttx) skip_bits(gb, 16);
412 av_log(avctx, AV_LOG_DEBUG,
413 "Profile %i:\nfrmrtq_postproc=%i, bitrtq_postproc=%i\n"
414 "LoopFilter=%i, MultiRes=%i, FastUVMC=%i, Extended MV=%i\n"
415 "Rangered=%i, VSTransform=%i, Overlap=%i, SyncMarker=%i\n"
416 "DQuant=%i, Quantizer mode=%i, Max B frames=%i\n",
417 v->profile, v->frmrtq_postproc, v->bitrtq_postproc,
418 v->s.loop_filter, v->multires, v->fastuvmc, v->extended_mv,
419 v->rangered, v->vstransform, v->overlap, v->s.resync_marker,
420 v->dquant, v->quantizer_mode, avctx->max_b_frames
425 static int decode_sequence_header_adv(VC1Context *v, GetBitContext *gb)
429 v->level = get_bits(gb, 3);
432 av_log(v->s.avctx, AV_LOG_ERROR, "Reserved LEVEL %i\n",v->level);
434 v->chromaformat = get_bits(gb, 2);
435 if (v->chromaformat != 1)
437 av_log(v->s.avctx, AV_LOG_ERROR,
438 "Only 4:2:0 chroma format supported\n");
443 v->frmrtq_postproc = get_bits(gb, 3); //common
444 // (bitrate-32kbps)/64kbps
445 v->bitrtq_postproc = get_bits(gb, 5); //common
446 v->postprocflag = get_bits1(gb); //common
448 w = (get_bits(gb, 12) + 1) << 1;
449 h = (get_bits(gb, 12) + 1) << 1;
450 avcodec_set_dimensions(v->s.avctx, w, h);
451 v->broadcast = get_bits1(gb);
452 v->interlace = get_bits1(gb);
453 v->tfcntrflag = get_bits1(gb);
454 v->finterpflag = get_bits1(gb);
455 skip_bits1(gb); // reserved
457 av_log(v->s.avctx, AV_LOG_DEBUG,
458 "Advanced Profile level %i:\nfrmrtq_postproc=%i, bitrtq_postproc=%i\n"
459 "LoopFilter=%i, ChromaFormat=%i, Pulldown=%i, Interlace: %i\n"
460 "TFCTRflag=%i, FINTERPflag=%i\n",
461 v->level, v->frmrtq_postproc, v->bitrtq_postproc,
462 v->s.loop_filter, v->chromaformat, v->broadcast, v->interlace,
463 v->tfcntrflag, v->finterpflag
466 v->psf = get_bits1(gb);
467 if(v->psf) { //PsF, 6.1.13
468 av_log(v->s.avctx, AV_LOG_ERROR, "Progressive Segmented Frame mode: not supported (yet)\n");
471 v->s.max_b_frames = v->s.avctx->max_b_frames = 7;
472 if(get_bits1(gb)) { //Display Info - decoding is not affected by it
474 av_log(v->s.avctx, AV_LOG_DEBUG, "Display extended info:\n");
475 w = get_bits(gb, 14) + 1;
476 h = get_bits(gb, 14) + 1;
477 av_log(v->s.avctx, AV_LOG_DEBUG, "Display dimensions: %ix%i\n", w, h);
479 ar = get_bits(gb, 4);
481 v->s.avctx->sample_aspect_ratio = ff_vc1_pixel_aspect[ar];
483 w = get_bits(gb, 8) + 1;
484 h = get_bits(gb, 8) + 1;
485 v->s.avctx->sample_aspect_ratio = (AVRational){w, h};
487 av_reduce(&v->s.avctx->sample_aspect_ratio.num,
488 &v->s.avctx->sample_aspect_ratio.den,
489 v->s.avctx->height * w,
490 v->s.avctx->width * h,
493 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);
495 if(get_bits1(gb)){ //framerate stuff
497 v->s.avctx->time_base.num = 32;
498 v->s.avctx->time_base.den = get_bits(gb, 16) + 1;
501 nr = get_bits(gb, 8);
502 dr = get_bits(gb, 4);
503 if(nr && nr < 8 && dr && dr < 3){
504 v->s.avctx->time_base.num = ff_vc1_fps_dr[dr - 1];
505 v->s.avctx->time_base.den = ff_vc1_fps_nr[nr - 1] * 1000;
508 if(v->broadcast) { // Pulldown may be present
509 v->s.avctx->time_base.den *= 2;
510 v->s.avctx->ticks_per_frame = 2;
515 v->color_prim = get_bits(gb, 8);
516 v->transfer_char = get_bits(gb, 8);
517 v->matrix_coef = get_bits(gb, 8);
521 v->hrd_param_flag = get_bits1(gb);
522 if(v->hrd_param_flag) {
524 v->hrd_num_leaky_buckets = get_bits(gb, 5);
525 skip_bits(gb, 4); //bitrate exponent
526 skip_bits(gb, 4); //buffer size exponent
527 for(i = 0; i < v->hrd_num_leaky_buckets; i++) {
528 skip_bits(gb, 16); //hrd_rate[n]
529 skip_bits(gb, 16); //hrd_buffer[n]
535 int vc1_decode_entry_point(AVCodecContext *avctx, VC1Context *v, GetBitContext *gb)
539 av_log(avctx, AV_LOG_DEBUG, "Entry point: %08X\n", show_bits_long(gb, 32));
540 v->broken_link = get_bits1(gb);
541 v->closed_entry = get_bits1(gb);
542 v->panscanflag = get_bits1(gb);
543 v->refdist_flag = get_bits1(gb);
544 v->s.loop_filter = get_bits1(gb);
545 v->fastuvmc = get_bits1(gb);
546 v->extended_mv = get_bits1(gb);
547 v->dquant = get_bits(gb, 2);
548 v->vstransform = get_bits1(gb);
549 v->overlap = get_bits1(gb);
550 v->quantizer_mode = get_bits(gb, 2);
552 if(v->hrd_param_flag){
553 for(i = 0; i < v->hrd_num_leaky_buckets; i++) {
554 skip_bits(gb, 8); //hrd_full[n]
559 int w = (get_bits(gb, 12)+1)<<1;
560 int h = (get_bits(gb, 12)+1)<<1;
561 avcodec_set_dimensions(avctx, w, h);
564 v->extended_dmv = get_bits1(gb);
565 if((v->range_mapy_flag = get_bits1(gb))) {
566 av_log(avctx, AV_LOG_ERROR, "Luma scaling is not supported, expect wrong picture\n");
567 v->range_mapy = get_bits(gb, 3);
569 if((v->range_mapuv_flag = get_bits1(gb))) {
570 av_log(avctx, AV_LOG_ERROR, "Chroma scaling is not supported, expect wrong picture\n");
571 v->range_mapuv = get_bits(gb, 3);
574 av_log(avctx, AV_LOG_DEBUG, "Entry point info:\n"
575 "BrokenLink=%i, ClosedEntry=%i, PanscanFlag=%i\n"
576 "RefDist=%i, Postproc=%i, FastUVMC=%i, ExtMV=%i\n"
577 "DQuant=%i, VSTransform=%i, Overlap=%i, Qmode=%i\n",
578 v->broken_link, v->closed_entry, v->panscanflag, v->refdist_flag, v->s.loop_filter,
579 v->fastuvmc, v->extended_mv, v->dquant, v->vstransform, v->overlap, v->quantizer_mode);
584 int vc1_parse_frame_header(VC1Context *v, GetBitContext* gb)
586 int pqindex, lowquant, status;
588 if(v->finterpflag) v->interpfrm = get_bits1(gb);
589 skip_bits(gb, 2); //framecnt unused
591 if (v->rangered) v->rangeredfrm = get_bits1(gb);
592 v->s.pict_type = get_bits1(gb);
593 if (v->s.avctx->max_b_frames) {
594 if (!v->s.pict_type) {
595 if (get_bits1(gb)) v->s.pict_type = AV_PICTURE_TYPE_I;
596 else v->s.pict_type = AV_PICTURE_TYPE_B;
597 } else v->s.pict_type = AV_PICTURE_TYPE_P;
598 } else v->s.pict_type = v->s.pict_type ? AV_PICTURE_TYPE_P : AV_PICTURE_TYPE_I;
601 if(v->s.pict_type == AV_PICTURE_TYPE_B) {
602 v->bfraction_lut_index = get_vlc2(gb, ff_vc1_bfraction_vlc.table, VC1_BFRACTION_VLC_BITS, 1);
603 v->bfraction = ff_vc1_bfraction_lut[v->bfraction_lut_index];
604 if(v->bfraction == 0) {
605 v->s.pict_type = AV_PICTURE_TYPE_BI;
608 if(v->s.pict_type == AV_PICTURE_TYPE_I || v->s.pict_type == AV_PICTURE_TYPE_BI)
609 skip_bits(gb, 7); // skip buffer fullness
615 if(v->s.pict_type == AV_PICTURE_TYPE_I || v->s.pict_type == AV_PICTURE_TYPE_BI)
617 if(v->s.pict_type == AV_PICTURE_TYPE_P)
620 /* Quantizer stuff */
621 pqindex = get_bits(gb, 5);
622 if(!pqindex) return -1;
623 if (v->quantizer_mode == QUANT_FRAME_IMPLICIT)
624 v->pq = ff_vc1_pquant_table[0][pqindex];
626 v->pq = ff_vc1_pquant_table[1][pqindex];
629 if (v->quantizer_mode == QUANT_FRAME_IMPLICIT)
630 v->pquantizer = pqindex < 9;
631 if (v->quantizer_mode == QUANT_NON_UNIFORM)
633 v->pqindex = pqindex;
634 if (pqindex < 9) v->halfpq = get_bits1(gb);
636 if (v->quantizer_mode == QUANT_FRAME_EXPLICIT)
637 v->pquantizer = get_bits1(gb);
639 if (v->extended_mv == 1) v->mvrange = get_unary(gb, 0, 3);
640 v->k_x = v->mvrange + 9 + (v->mvrange >> 1); //k_x can be 9 10 12 13
641 v->k_y = v->mvrange + 8; //k_y can be 8 9 10 11
642 v->range_x = 1 << (v->k_x - 1);
643 v->range_y = 1 << (v->k_y - 1);
644 if (v->multires && v->s.pict_type != AV_PICTURE_TYPE_B) v->respic = get_bits(gb, 2);
646 if(v->res_x8 && (v->s.pict_type == AV_PICTURE_TYPE_I || v->s.pict_type == AV_PICTURE_TYPE_BI)){
647 v->x8_type = get_bits1(gb);
648 }else v->x8_type = 0;
649 //av_log(v->s.avctx, AV_LOG_INFO, "%c Frame: QP=[%i]%i (+%i/2) %i\n",
650 // (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);
652 if(v->s.pict_type == AV_PICTURE_TYPE_I || v->s.pict_type == AV_PICTURE_TYPE_P) v->use_ic = 0;
654 switch(v->s.pict_type) {
655 case AV_PICTURE_TYPE_P:
656 if (v->pq < 5) v->tt_index = 0;
657 else if(v->pq < 13) v->tt_index = 1;
658 else v->tt_index = 2;
660 lowquant = (v->pq > 12) ? 0 : 1;
661 v->mv_mode = ff_vc1_mv_pmode_table[lowquant][get_unary(gb, 1, 4)];
662 if (v->mv_mode == MV_PMODE_INTENSITY_COMP)
665 v->mv_mode2 = ff_vc1_mv_pmode_table2[lowquant][get_unary(gb, 1, 3)];
666 v->lumscale = get_bits(gb, 6);
667 v->lumshift = get_bits(gb, 6);
669 /* fill lookup tables for intensity compensation */
672 shift = (255 - v->lumshift * 2) << 6;
676 scale = v->lumscale + 32;
678 shift = (v->lumshift - 64) << 6;
680 shift = v->lumshift << 6;
682 for(i = 0; i < 256; i++) {
683 v->luty[i] = av_clip_uint8((scale * i + shift + 32) >> 6);
684 v->lutuv[i] = av_clip_uint8((scale * (i - 128) + 128*64 + 32) >> 6);
687 if(v->mv_mode == MV_PMODE_1MV_HPEL || v->mv_mode == MV_PMODE_1MV_HPEL_BILIN)
688 v->s.quarter_sample = 0;
689 else if(v->mv_mode == MV_PMODE_INTENSITY_COMP) {
690 if(v->mv_mode2 == MV_PMODE_1MV_HPEL || v->mv_mode2 == MV_PMODE_1MV_HPEL_BILIN)
691 v->s.quarter_sample = 0;
693 v->s.quarter_sample = 1;
695 v->s.quarter_sample = 1;
696 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));
698 if ((v->mv_mode == MV_PMODE_INTENSITY_COMP &&
699 v->mv_mode2 == MV_PMODE_MIXED_MV)
700 || v->mv_mode == MV_PMODE_MIXED_MV)
702 status = bitplane_decoding(v->mv_type_mb_plane, &v->mv_type_is_raw, v);
703 if (status < 0) return -1;
704 av_log(v->s.avctx, AV_LOG_DEBUG, "MB MV Type plane encoding: "
705 "Imode: %i, Invert: %i\n", status>>1, status&1);
707 v->mv_type_is_raw = 0;
708 memset(v->mv_type_mb_plane, 0, v->s.mb_stride * v->s.mb_height);
710 status = bitplane_decoding(v->s.mbskip_table, &v->skip_is_raw, v);
711 if (status < 0) return -1;
712 av_log(v->s.avctx, AV_LOG_DEBUG, "MB Skip plane encoding: "
713 "Imode: %i, Invert: %i\n", status>>1, status&1);
715 /* Hopefully this is correct for P frames */
716 v->s.mv_table_index = get_bits(gb, 2); //but using ff_vc1_ tables
717 v->cbpcy_vlc = &ff_vc1_cbpcy_p_vlc[get_bits(gb, 2)];
721 av_log(v->s.avctx, AV_LOG_DEBUG, "VOP DQuant info\n");
722 vop_dquant_decoding(v);
725 v->ttfrm = 0; //FIXME Is that so ?
728 v->ttmbf = get_bits1(gb);
731 v->ttfrm = ff_vc1_ttfrm_to_tt[get_bits(gb, 2)];
738 case AV_PICTURE_TYPE_B:
739 if (v->pq < 5) v->tt_index = 0;
740 else if(v->pq < 13) v->tt_index = 1;
741 else v->tt_index = 2;
743 v->mv_mode = get_bits1(gb) ? MV_PMODE_1MV : MV_PMODE_1MV_HPEL_BILIN;
744 v->s.quarter_sample = (v->mv_mode == MV_PMODE_1MV);
745 v->s.mspel = v->s.quarter_sample;
747 status = bitplane_decoding(v->direct_mb_plane, &v->dmb_is_raw, v);
748 if (status < 0) return -1;
749 av_log(v->s.avctx, AV_LOG_DEBUG, "MB Direct Type plane encoding: "
750 "Imode: %i, Invert: %i\n", status>>1, status&1);
751 status = bitplane_decoding(v->s.mbskip_table, &v->skip_is_raw, v);
752 if (status < 0) return -1;
753 av_log(v->s.avctx, AV_LOG_DEBUG, "MB Skip plane encoding: "
754 "Imode: %i, Invert: %i\n", status>>1, status&1);
756 v->s.mv_table_index = get_bits(gb, 2);
757 v->cbpcy_vlc = &ff_vc1_cbpcy_p_vlc[get_bits(gb, 2)];
761 av_log(v->s.avctx, AV_LOG_DEBUG, "VOP DQuant info\n");
762 vop_dquant_decoding(v);
768 v->ttmbf = get_bits1(gb);
771 v->ttfrm = ff_vc1_ttfrm_to_tt[get_bits(gb, 2)];
783 v->c_ac_table_index = decode012(gb);
784 if (v->s.pict_type == AV_PICTURE_TYPE_I || v->s.pict_type == AV_PICTURE_TYPE_BI)
786 v->y_ac_table_index = decode012(gb);
789 v->s.dc_table_index = get_bits1(gb);
792 if(v->s.pict_type == AV_PICTURE_TYPE_BI) {
793 v->s.pict_type = AV_PICTURE_TYPE_B;
799 int vc1_parse_frame_header_adv(VC1Context *v, GetBitContext* gb)
801 int pqindex, lowquant;
804 v->p_frame_skipped = 0;
807 v->fcm = decode012(gb);
809 if(!v->warn_interlaced++)
810 av_log(v->s.avctx, AV_LOG_ERROR, "Interlaced frames/fields support is not implemented\n");
814 switch(get_unary(gb, 0, 4)) {
816 v->s.pict_type = AV_PICTURE_TYPE_P;
819 v->s.pict_type = AV_PICTURE_TYPE_B;
822 v->s.pict_type = AV_PICTURE_TYPE_I;
825 v->s.pict_type = AV_PICTURE_TYPE_BI;
828 v->s.pict_type = AV_PICTURE_TYPE_P; // skipped pic
829 v->p_frame_skipped = 1;
835 if(!v->interlace || v->psf) {
836 v->rptfrm = get_bits(gb, 2);
838 v->tff = get_bits1(gb);
839 v->rff = get_bits1(gb);
843 av_log_missing_feature(v->s.avctx, "Pan-scan", 0);
846 if(v->p_frame_skipped) {
849 v->rnd = get_bits1(gb);
851 v->uvsamp = get_bits1(gb);
852 if(v->finterpflag) v->interpfrm = get_bits1(gb);
853 if(v->s.pict_type == AV_PICTURE_TYPE_B) {
854 v->bfraction_lut_index = get_vlc2(gb, ff_vc1_bfraction_vlc.table, VC1_BFRACTION_VLC_BITS, 1);
855 v->bfraction = ff_vc1_bfraction_lut[v->bfraction_lut_index];
856 if(v->bfraction == 0) {
857 v->s.pict_type = AV_PICTURE_TYPE_BI; /* XXX: should not happen here */
860 pqindex = get_bits(gb, 5);
861 if(!pqindex) return -1;
862 v->pqindex = pqindex;
863 if (v->quantizer_mode == QUANT_FRAME_IMPLICIT)
864 v->pq = ff_vc1_pquant_table[0][pqindex];
866 v->pq = ff_vc1_pquant_table[1][pqindex];
869 if (v->quantizer_mode == QUANT_FRAME_IMPLICIT)
870 v->pquantizer = pqindex < 9;
871 if (v->quantizer_mode == QUANT_NON_UNIFORM)
873 v->pqindex = pqindex;
874 if (pqindex < 9) v->halfpq = get_bits1(gb);
876 if (v->quantizer_mode == QUANT_FRAME_EXPLICIT)
877 v->pquantizer = get_bits1(gb);
879 v->postproc = get_bits(gb, 2);
881 if(v->s.pict_type == AV_PICTURE_TYPE_I || v->s.pict_type == AV_PICTURE_TYPE_P) v->use_ic = 0;
886 switch(v->s.pict_type) {
887 case AV_PICTURE_TYPE_I:
888 case AV_PICTURE_TYPE_BI:
889 status = bitplane_decoding(v->acpred_plane, &v->acpred_is_raw, v);
890 if (status < 0) return -1;
891 av_log(v->s.avctx, AV_LOG_DEBUG, "ACPRED plane encoding: "
892 "Imode: %i, Invert: %i\n", status>>1, status&1);
893 v->condover = CONDOVER_NONE;
894 if(v->overlap && v->pq <= 8) {
895 v->condover = decode012(gb);
896 if(v->condover == CONDOVER_SELECT) {
897 status = bitplane_decoding(v->over_flags_plane, &v->overflg_is_raw, v);
898 if (status < 0) return -1;
899 av_log(v->s.avctx, AV_LOG_DEBUG, "CONDOVER plane encoding: "
900 "Imode: %i, Invert: %i\n", status>>1, status&1);
904 case AV_PICTURE_TYPE_P:
905 if (v->extended_mv) v->mvrange = get_unary(gb, 0, 3);
907 v->k_x = v->mvrange + 9 + (v->mvrange >> 1); //k_x can be 9 10 12 13
908 v->k_y = v->mvrange + 8; //k_y can be 8 9 10 11
909 v->range_x = 1 << (v->k_x - 1);
910 v->range_y = 1 << (v->k_y - 1);
912 if (v->pq < 5) v->tt_index = 0;
913 else if(v->pq < 13) v->tt_index = 1;
914 else v->tt_index = 2;
916 lowquant = (v->pq > 12) ? 0 : 1;
917 v->mv_mode = ff_vc1_mv_pmode_table[lowquant][get_unary(gb, 1, 4)];
918 if (v->mv_mode == MV_PMODE_INTENSITY_COMP)
921 v->mv_mode2 = ff_vc1_mv_pmode_table2[lowquant][get_unary(gb, 1, 3)];
922 v->lumscale = get_bits(gb, 6);
923 v->lumshift = get_bits(gb, 6);
924 /* fill lookup tables for intensity compensation */
927 shift = (255 - v->lumshift * 2) << 6;
931 scale = v->lumscale + 32;
933 shift = (v->lumshift - 64) << 6;
935 shift = v->lumshift << 6;
937 for(i = 0; i < 256; i++) {
938 v->luty[i] = av_clip_uint8((scale * i + shift + 32) >> 6);
939 v->lutuv[i] = av_clip_uint8((scale * (i - 128) + 128*64 + 32) >> 6);
943 if(v->mv_mode == MV_PMODE_1MV_HPEL || v->mv_mode == MV_PMODE_1MV_HPEL_BILIN)
944 v->s.quarter_sample = 0;
945 else if(v->mv_mode == MV_PMODE_INTENSITY_COMP) {
946 if(v->mv_mode2 == MV_PMODE_1MV_HPEL || v->mv_mode2 == MV_PMODE_1MV_HPEL_BILIN)
947 v->s.quarter_sample = 0;
949 v->s.quarter_sample = 1;
951 v->s.quarter_sample = 1;
952 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));
954 if ((v->mv_mode == MV_PMODE_INTENSITY_COMP &&
955 v->mv_mode2 == MV_PMODE_MIXED_MV)
956 || v->mv_mode == MV_PMODE_MIXED_MV)
958 status = bitplane_decoding(v->mv_type_mb_plane, &v->mv_type_is_raw, v);
959 if (status < 0) return -1;
960 av_log(v->s.avctx, AV_LOG_DEBUG, "MB MV Type plane encoding: "
961 "Imode: %i, Invert: %i\n", status>>1, status&1);
963 v->mv_type_is_raw = 0;
964 memset(v->mv_type_mb_plane, 0, v->s.mb_stride * v->s.mb_height);
966 status = bitplane_decoding(v->s.mbskip_table, &v->skip_is_raw, v);
967 if (status < 0) return -1;
968 av_log(v->s.avctx, AV_LOG_DEBUG, "MB Skip plane encoding: "
969 "Imode: %i, Invert: %i\n", status>>1, status&1);
971 /* Hopefully this is correct for P frames */
972 v->s.mv_table_index = get_bits(gb, 2); //but using ff_vc1_ tables
973 v->cbpcy_vlc = &ff_vc1_cbpcy_p_vlc[get_bits(gb, 2)];
976 av_log(v->s.avctx, AV_LOG_DEBUG, "VOP DQuant info\n");
977 vop_dquant_decoding(v);
980 v->ttfrm = 0; //FIXME Is that so ?
983 v->ttmbf = get_bits1(gb);
986 v->ttfrm = ff_vc1_ttfrm_to_tt[get_bits(gb, 2)];
993 case AV_PICTURE_TYPE_B:
994 if (v->extended_mv) v->mvrange = get_unary(gb, 0, 3);
996 v->k_x = v->mvrange + 9 + (v->mvrange >> 1); //k_x can be 9 10 12 13
997 v->k_y = v->mvrange + 8; //k_y can be 8 9 10 11
998 v->range_x = 1 << (v->k_x - 1);
999 v->range_y = 1 << (v->k_y - 1);
1001 if (v->pq < 5) v->tt_index = 0;
1002 else if(v->pq < 13) v->tt_index = 1;
1003 else v->tt_index = 2;
1005 v->mv_mode = get_bits1(gb) ? MV_PMODE_1MV : MV_PMODE_1MV_HPEL_BILIN;
1006 v->s.quarter_sample = (v->mv_mode == MV_PMODE_1MV);
1007 v->s.mspel = v->s.quarter_sample;
1009 status = bitplane_decoding(v->direct_mb_plane, &v->dmb_is_raw, v);
1010 if (status < 0) return -1;
1011 av_log(v->s.avctx, AV_LOG_DEBUG, "MB Direct Type plane encoding: "
1012 "Imode: %i, Invert: %i\n", status>>1, status&1);
1013 status = bitplane_decoding(v->s.mbskip_table, &v->skip_is_raw, v);
1014 if (status < 0) return -1;
1015 av_log(v->s.avctx, AV_LOG_DEBUG, "MB Skip plane encoding: "
1016 "Imode: %i, Invert: %i\n", status>>1, status&1);
1018 v->s.mv_table_index = get_bits(gb, 2);
1019 v->cbpcy_vlc = &ff_vc1_cbpcy_p_vlc[get_bits(gb, 2)];
1023 av_log(v->s.avctx, AV_LOG_DEBUG, "VOP DQuant info\n");
1024 vop_dquant_decoding(v);
1030 v->ttmbf = get_bits1(gb);
1033 v->ttfrm = ff_vc1_ttfrm_to_tt[get_bits(gb, 2)];
1043 v->c_ac_table_index = decode012(gb);
1044 if (v->s.pict_type == AV_PICTURE_TYPE_I || v->s.pict_type == AV_PICTURE_TYPE_BI)
1046 v->y_ac_table_index = decode012(gb);
1049 v->s.dc_table_index = get_bits1(gb);
1050 if ((v->s.pict_type == AV_PICTURE_TYPE_I || v->s.pict_type == AV_PICTURE_TYPE_BI) && v->dquant) {
1051 av_log(v->s.avctx, AV_LOG_DEBUG, "VOP DQuant info\n");
1052 vop_dquant_decoding(v);
1056 if(v->s.pict_type == AV_PICTURE_TYPE_BI) {
1057 v->s.pict_type = AV_PICTURE_TYPE_B;