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);
283 static void simple_idct_put_rangered(uint8_t *dest, int line_size, DCTELEM *block)
286 ff_simple_idct(block);
287 for (i = 0; i < 64; i++) block[i] = (block[i] - 64) << 1;
288 ff_put_pixels_clamped_c(block, dest, line_size);
291 static void simple_idct_put_signed(uint8_t *dest, int line_size, DCTELEM *block)
293 ff_simple_idct(block);
294 ff_put_signed_pixels_clamped_c(block, dest, line_size);
297 static void simple_idct_put_signed_rangered(uint8_t *dest, int line_size, DCTELEM *block)
300 ff_simple_idct(block);
301 for (i = 0; i < 64; i++) block[i] <<= 1;
302 ff_put_signed_pixels_clamped_c(block, dest, line_size);
306 * Decode Simple/Main Profiles sequence header
307 * @see Figure 7-8, p16-17
308 * @param avctx Codec context
309 * @param gb GetBit context initialized from Codec context extra_data
312 int vc1_decode_sequence_header(AVCodecContext *avctx, VC1Context *v, GetBitContext *gb)
314 av_log(avctx, AV_LOG_DEBUG, "Header: %0X\n", show_bits(gb, 32));
315 v->profile = get_bits(gb, 2);
316 if (v->profile == PROFILE_COMPLEX)
318 av_log(avctx, AV_LOG_WARNING, "WMV3 Complex Profile is not fully supported\n");
321 if (v->profile == PROFILE_ADVANCED)
323 v->zz_8x4 = ff_vc1_adv_progressive_8x4_zz;
324 v->zz_4x8 = ff_vc1_adv_progressive_4x8_zz;
325 return decode_sequence_header_adv(v, gb);
329 v->zz_8x4 = wmv2_scantableA;
330 v->zz_4x8 = wmv2_scantableB;
331 v->res_y411 = get_bits1(gb);
332 v->res_sprite = get_bits1(gb);
335 av_log(avctx, AV_LOG_ERROR,
336 "Old interlaced mode is not supported\n");
340 av_log(avctx, AV_LOG_ERROR, "WMVP is not fully supported\n");
345 v->frmrtq_postproc = get_bits(gb, 3); //common
346 // (bitrate-32kbps)/64kbps
347 v->bitrtq_postproc = get_bits(gb, 5); //common
348 v->s.loop_filter = get_bits1(gb); //common
349 if(v->s.loop_filter == 1 && v->profile == PROFILE_SIMPLE)
351 av_log(avctx, AV_LOG_ERROR,
352 "LOOPFILTER shall not be enabled in Simple Profile\n");
354 if(v->s.avctx->skip_loop_filter >= AVDISCARD_ALL)
355 v->s.loop_filter = 0;
357 v->res_x8 = get_bits1(gb); //reserved
358 v->multires = get_bits1(gb);
359 v->res_fasttx = get_bits1(gb);
362 v->vc1dsp.vc1_inv_trans_8x8_add = ff_simple_idct_add;
363 v->vc1dsp.vc1_inv_trans_8x8_put[0] = ff_simple_idct_put;
364 v->vc1dsp.vc1_inv_trans_8x8_put[1] = simple_idct_put_rangered;
365 v->vc1dsp.vc1_inv_trans_8x8_put_signed[0] = simple_idct_put_signed;
366 v->vc1dsp.vc1_inv_trans_8x8_put_signed[1] = simple_idct_put_signed_rangered;
367 v->vc1dsp.vc1_inv_trans_8x4 = ff_simple_idct84_add;
368 v->vc1dsp.vc1_inv_trans_4x8 = ff_simple_idct48_add;
369 v->vc1dsp.vc1_inv_trans_4x4 = ff_simple_idct44_add;
370 v->vc1dsp.vc1_inv_trans_8x8_dc = ff_simple_idct_add;
371 v->vc1dsp.vc1_inv_trans_8x4_dc = ff_simple_idct84_add;
372 v->vc1dsp.vc1_inv_trans_4x8_dc = ff_simple_idct48_add;
373 v->vc1dsp.vc1_inv_trans_4x4_dc = ff_simple_idct44_add;
376 v->fastuvmc = get_bits1(gb); //common
377 if (!v->profile && !v->fastuvmc)
379 av_log(avctx, AV_LOG_ERROR,
380 "FASTUVMC unavailable in Simple Profile\n");
383 v->extended_mv = get_bits1(gb); //common
384 if (!v->profile && v->extended_mv)
386 av_log(avctx, AV_LOG_ERROR,
387 "Extended MVs unavailable in Simple Profile\n");
390 v->dquant = get_bits(gb, 2); //common
391 v->vstransform = get_bits1(gb); //common
393 v->res_transtab = get_bits1(gb);
396 av_log(avctx, AV_LOG_ERROR,
397 "1 for reserved RES_TRANSTAB is forbidden\n");
401 v->overlap = get_bits1(gb); //common
403 v->s.resync_marker = get_bits1(gb);
404 v->rangered = get_bits1(gb);
405 if (v->rangered && v->profile == PROFILE_SIMPLE)
407 av_log(avctx, AV_LOG_INFO,
408 "RANGERED should be set to 0 in Simple Profile\n");
411 v->s.max_b_frames = avctx->max_b_frames = get_bits(gb, 3); //common
412 v->quantizer_mode = get_bits(gb, 2); //common
414 v->finterpflag = get_bits1(gb); //common
417 v->s.avctx->width = v->s.avctx->coded_width = get_bits(gb, 11);
418 v->s.avctx->height = v->s.avctx->coded_height = get_bits(gb, 11);
419 skip_bits(gb, 5); //frame rate
420 v->res_x8 = get_bits1(gb);
421 if (get_bits1(gb)) { // something to do with DC VLC selection
422 av_log(avctx, AV_LOG_ERROR, "Unsupported sprite feature\n");
425 skip_bits(gb, 3); //slice code
428 v->res_rtm_flag = get_bits1(gb); //reserved
430 if (!v->res_rtm_flag)
432 // av_log(avctx, AV_LOG_ERROR,
433 // "0 for reserved RES_RTM_FLAG is forbidden\n");
434 av_log(avctx, AV_LOG_ERROR,
435 "Old WMV3 version detected, some frames may be decoded incorrectly\n");
438 //TODO: figure out what they mean (always 0x402F)
439 if(!v->res_fasttx) skip_bits(gb, 16);
440 av_log(avctx, AV_LOG_DEBUG,
441 "Profile %i:\nfrmrtq_postproc=%i, bitrtq_postproc=%i\n"
442 "LoopFilter=%i, MultiRes=%i, FastUVMC=%i, Extended MV=%i\n"
443 "Rangered=%i, VSTransform=%i, Overlap=%i, SyncMarker=%i\n"
444 "DQuant=%i, Quantizer mode=%i, Max B frames=%i\n",
445 v->profile, v->frmrtq_postproc, v->bitrtq_postproc,
446 v->s.loop_filter, v->multires, v->fastuvmc, v->extended_mv,
447 v->rangered, v->vstransform, v->overlap, v->s.resync_marker,
448 v->dquant, v->quantizer_mode, avctx->max_b_frames
453 static int decode_sequence_header_adv(VC1Context *v, GetBitContext *gb)
456 v->level = get_bits(gb, 3);
459 av_log(v->s.avctx, AV_LOG_ERROR, "Reserved LEVEL %i\n",v->level);
461 v->chromaformat = get_bits(gb, 2);
462 if (v->chromaformat != 1)
464 av_log(v->s.avctx, AV_LOG_ERROR,
465 "Only 4:2:0 chroma format supported\n");
470 v->frmrtq_postproc = get_bits(gb, 3); //common
471 // (bitrate-32kbps)/64kbps
472 v->bitrtq_postproc = get_bits(gb, 5); //common
473 v->postprocflag = get_bits1(gb); //common
475 v->s.avctx->coded_width = (get_bits(gb, 12) + 1) << 1;
476 v->s.avctx->coded_height = (get_bits(gb, 12) + 1) << 1;
477 v->s.avctx->width = v->s.avctx->coded_width;
478 v->s.avctx->height = v->s.avctx->coded_height;
479 v->broadcast = get_bits1(gb);
480 v->interlace = get_bits1(gb);
481 v->tfcntrflag = get_bits1(gb);
482 v->finterpflag = get_bits1(gb);
483 skip_bits1(gb); // reserved
485 v->s.h_edge_pos = v->s.avctx->coded_width;
486 v->s.v_edge_pos = v->s.avctx->coded_height;
488 av_log(v->s.avctx, AV_LOG_DEBUG,
489 "Advanced Profile level %i:\nfrmrtq_postproc=%i, bitrtq_postproc=%i\n"
490 "LoopFilter=%i, ChromaFormat=%i, Pulldown=%i, Interlace: %i\n"
491 "TFCTRflag=%i, FINTERPflag=%i\n",
492 v->level, v->frmrtq_postproc, v->bitrtq_postproc,
493 v->s.loop_filter, v->chromaformat, v->broadcast, v->interlace,
494 v->tfcntrflag, v->finterpflag
497 v->psf = get_bits1(gb);
498 if(v->psf) { //PsF, 6.1.13
499 av_log(v->s.avctx, AV_LOG_ERROR, "Progressive Segmented Frame mode: not supported (yet)\n");
502 v->s.max_b_frames = v->s.avctx->max_b_frames = 7;
503 if(get_bits1(gb)) { //Display Info - decoding is not affected by it
505 av_log(v->s.avctx, AV_LOG_DEBUG, "Display extended info:\n");
506 v->s.avctx->width = w = get_bits(gb, 14) + 1;
507 v->s.avctx->height = h = get_bits(gb, 14) + 1;
508 av_log(v->s.avctx, AV_LOG_DEBUG, "Display dimensions: %ix%i\n", w, h);
510 ar = get_bits(gb, 4);
512 v->s.avctx->sample_aspect_ratio = ff_vc1_pixel_aspect[ar];
516 v->s.avctx->sample_aspect_ratio = (AVRational){w, h};
518 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);
520 if(get_bits1(gb)){ //framerate stuff
522 v->s.avctx->time_base.num = 32;
523 v->s.avctx->time_base.den = get_bits(gb, 16) + 1;
526 nr = get_bits(gb, 8);
527 dr = get_bits(gb, 4);
528 if(nr && nr < 8 && dr && dr < 3){
529 v->s.avctx->time_base.num = ff_vc1_fps_dr[dr - 1];
530 v->s.avctx->time_base.den = ff_vc1_fps_nr[nr - 1] * 1000;
536 v->color_prim = get_bits(gb, 8);
537 v->transfer_char = get_bits(gb, 8);
538 v->matrix_coef = get_bits(gb, 8);
542 v->hrd_param_flag = get_bits1(gb);
543 if(v->hrd_param_flag) {
545 v->hrd_num_leaky_buckets = get_bits(gb, 5);
546 skip_bits(gb, 4); //bitrate exponent
547 skip_bits(gb, 4); //buffer size exponent
548 for(i = 0; i < v->hrd_num_leaky_buckets; i++) {
549 skip_bits(gb, 16); //hrd_rate[n]
550 skip_bits(gb, 16); //hrd_buffer[n]
556 int vc1_decode_entry_point(AVCodecContext *avctx, VC1Context *v, GetBitContext *gb)
560 av_log(avctx, AV_LOG_DEBUG, "Entry point: %08X\n", show_bits_long(gb, 32));
561 v->broken_link = get_bits1(gb);
562 v->closed_entry = get_bits1(gb);
563 v->panscanflag = get_bits1(gb);
564 v->refdist_flag = get_bits1(gb);
565 v->s.loop_filter = get_bits1(gb);
566 v->fastuvmc = get_bits1(gb);
567 v->extended_mv = get_bits1(gb);
568 v->dquant = get_bits(gb, 2);
569 v->vstransform = get_bits1(gb);
570 v->overlap = get_bits1(gb);
571 v->quantizer_mode = get_bits(gb, 2);
573 if(v->hrd_param_flag){
574 for(i = 0; i < v->hrd_num_leaky_buckets; i++) {
575 skip_bits(gb, 8); //hrd_full[n]
580 avctx->coded_width = (get_bits(gb, 12)+1)<<1;
581 avctx->coded_height = (get_bits(gb, 12)+1)<<1;
584 v->extended_dmv = get_bits1(gb);
585 if((v->range_mapy_flag = get_bits1(gb))) {
586 av_log(avctx, AV_LOG_ERROR, "Luma scaling is not supported, expect wrong picture\n");
587 v->range_mapy = get_bits(gb, 3);
589 if((v->range_mapuv_flag = get_bits1(gb))) {
590 av_log(avctx, AV_LOG_ERROR, "Chroma scaling is not supported, expect wrong picture\n");
591 v->range_mapuv = get_bits(gb, 3);
594 av_log(avctx, AV_LOG_DEBUG, "Entry point info:\n"
595 "BrokenLink=%i, ClosedEntry=%i, PanscanFlag=%i\n"
596 "RefDist=%i, Postproc=%i, FastUVMC=%i, ExtMV=%i\n"
597 "DQuant=%i, VSTransform=%i, Overlap=%i, Qmode=%i\n",
598 v->broken_link, v->closed_entry, v->panscanflag, v->refdist_flag, v->s.loop_filter,
599 v->fastuvmc, v->extended_mv, v->dquant, v->vstransform, v->overlap, v->quantizer_mode);
604 int vc1_parse_frame_header(VC1Context *v, GetBitContext* gb)
606 int pqindex, lowquant, status;
609 skip_bits(gb, 2); //not yet deciphered
611 if(v->finterpflag) v->interpfrm = get_bits1(gb);
612 skip_bits(gb, 2); //framecnt unused
614 if (v->rangered) v->rangeredfrm = get_bits1(gb);
615 v->s.pict_type = get_bits1(gb);
616 if (v->s.avctx->max_b_frames) {
617 if (!v->s.pict_type) {
618 if (get_bits1(gb)) v->s.pict_type = FF_I_TYPE;
619 else v->s.pict_type = FF_B_TYPE;
620 } else v->s.pict_type = FF_P_TYPE;
621 } else v->s.pict_type = v->s.pict_type ? FF_P_TYPE : FF_I_TYPE;
624 if(v->s.pict_type == FF_B_TYPE) {
625 v->bfraction_lut_index = get_vlc2(gb, ff_vc1_bfraction_vlc.table, VC1_BFRACTION_VLC_BITS, 1);
626 v->bfraction = ff_vc1_bfraction_lut[v->bfraction_lut_index];
627 if(v->bfraction == 0) {
628 v->s.pict_type = FF_BI_TYPE;
631 if(v->s.pict_type == FF_I_TYPE || v->s.pict_type == FF_BI_TYPE)
632 skip_bits(gb, 7); // skip buffer fullness
638 if(v->s.pict_type == FF_I_TYPE || v->s.pict_type == FF_BI_TYPE)
640 if(v->s.pict_type == FF_P_TYPE)
643 /* Quantizer stuff */
644 pqindex = get_bits(gb, 5);
645 if(!pqindex) return -1;
646 if (v->quantizer_mode == QUANT_FRAME_IMPLICIT)
647 v->pq = ff_vc1_pquant_table[0][pqindex];
649 v->pq = ff_vc1_pquant_table[1][pqindex];
652 if (v->quantizer_mode == QUANT_FRAME_IMPLICIT)
653 v->pquantizer = pqindex < 9;
654 if (v->quantizer_mode == QUANT_NON_UNIFORM)
656 v->pqindex = pqindex;
657 if (pqindex < 9) v->halfpq = get_bits1(gb);
659 if (v->quantizer_mode == QUANT_FRAME_EXPLICIT)
660 v->pquantizer = get_bits1(gb);
662 if (v->extended_mv == 1) v->mvrange = get_unary(gb, 0, 3);
663 v->k_x = v->mvrange + 9 + (v->mvrange >> 1); //k_x can be 9 10 12 13
664 v->k_y = v->mvrange + 8; //k_y can be 8 9 10 11
665 v->range_x = 1 << (v->k_x - 1);
666 v->range_y = 1 << (v->k_y - 1);
667 if (v->multires && v->s.pict_type != FF_B_TYPE) v->respic = get_bits(gb, 2);
669 if(v->res_x8 && (v->s.pict_type == FF_I_TYPE || v->s.pict_type == FF_BI_TYPE)){
670 v->x8_type = get_bits1(gb);
671 }else v->x8_type = 0;
672 //av_log(v->s.avctx, AV_LOG_INFO, "%c Frame: QP=[%i]%i (+%i/2) %i\n",
673 // (v->s.pict_type == FF_P_TYPE) ? 'P' : ((v->s.pict_type == FF_I_TYPE) ? 'I' : 'B'), pqindex, v->pq, v->halfpq, v->rangeredfrm);
675 if(v->s.pict_type == FF_I_TYPE || v->s.pict_type == FF_P_TYPE) v->use_ic = 0;
677 switch(v->s.pict_type) {
679 if (v->pq < 5) v->tt_index = 0;
680 else if(v->pq < 13) v->tt_index = 1;
681 else v->tt_index = 2;
683 lowquant = (v->pq > 12) ? 0 : 1;
684 v->mv_mode = ff_vc1_mv_pmode_table[lowquant][get_unary(gb, 1, 4)];
685 if (v->mv_mode == MV_PMODE_INTENSITY_COMP)
688 v->mv_mode2 = ff_vc1_mv_pmode_table2[lowquant][get_unary(gb, 1, 3)];
689 v->lumscale = get_bits(gb, 6);
690 v->lumshift = get_bits(gb, 6);
692 /* fill lookup tables for intensity compensation */
695 shift = (255 - v->lumshift * 2) << 6;
699 scale = v->lumscale + 32;
701 shift = (v->lumshift - 64) << 6;
703 shift = v->lumshift << 6;
705 for(i = 0; i < 256; i++) {
706 v->luty[i] = av_clip_uint8((scale * i + shift + 32) >> 6);
707 v->lutuv[i] = av_clip_uint8((scale * (i - 128) + 128*64 + 32) >> 6);
710 if(v->mv_mode == MV_PMODE_1MV_HPEL || v->mv_mode == MV_PMODE_1MV_HPEL_BILIN)
711 v->s.quarter_sample = 0;
712 else if(v->mv_mode == MV_PMODE_INTENSITY_COMP) {
713 if(v->mv_mode2 == MV_PMODE_1MV_HPEL || v->mv_mode2 == MV_PMODE_1MV_HPEL_BILIN)
714 v->s.quarter_sample = 0;
716 v->s.quarter_sample = 1;
718 v->s.quarter_sample = 1;
719 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));
721 if ((v->mv_mode == MV_PMODE_INTENSITY_COMP &&
722 v->mv_mode2 == MV_PMODE_MIXED_MV)
723 || v->mv_mode == MV_PMODE_MIXED_MV)
725 status = bitplane_decoding(v->mv_type_mb_plane, &v->mv_type_is_raw, v);
726 if (status < 0) return -1;
727 av_log(v->s.avctx, AV_LOG_DEBUG, "MB MV Type plane encoding: "
728 "Imode: %i, Invert: %i\n", status>>1, status&1);
730 v->mv_type_is_raw = 0;
731 memset(v->mv_type_mb_plane, 0, v->s.mb_stride * v->s.mb_height);
733 status = bitplane_decoding(v->s.mbskip_table, &v->skip_is_raw, v);
734 if (status < 0) return -1;
735 av_log(v->s.avctx, AV_LOG_DEBUG, "MB Skip plane encoding: "
736 "Imode: %i, Invert: %i\n", status>>1, status&1);
738 /* Hopefully this is correct for P frames */
739 v->s.mv_table_index = get_bits(gb, 2); //but using ff_vc1_ tables
740 v->cbpcy_vlc = &ff_vc1_cbpcy_p_vlc[get_bits(gb, 2)];
744 av_log(v->s.avctx, AV_LOG_DEBUG, "VOP DQuant info\n");
745 vop_dquant_decoding(v);
748 v->ttfrm = 0; //FIXME Is that so ?
751 v->ttmbf = get_bits1(gb);
754 v->ttfrm = ff_vc1_ttfrm_to_tt[get_bits(gb, 2)];
762 if (v->pq < 5) v->tt_index = 0;
763 else if(v->pq < 13) v->tt_index = 1;
764 else v->tt_index = 2;
766 v->mv_mode = get_bits1(gb) ? MV_PMODE_1MV : MV_PMODE_1MV_HPEL_BILIN;
767 v->s.quarter_sample = (v->mv_mode == MV_PMODE_1MV);
768 v->s.mspel = v->s.quarter_sample;
770 status = bitplane_decoding(v->direct_mb_plane, &v->dmb_is_raw, v);
771 if (status < 0) return -1;
772 av_log(v->s.avctx, AV_LOG_DEBUG, "MB Direct Type plane encoding: "
773 "Imode: %i, Invert: %i\n", status>>1, status&1);
774 status = bitplane_decoding(v->s.mbskip_table, &v->skip_is_raw, v);
775 if (status < 0) return -1;
776 av_log(v->s.avctx, AV_LOG_DEBUG, "MB Skip plane encoding: "
777 "Imode: %i, Invert: %i\n", status>>1, status&1);
779 v->s.mv_table_index = get_bits(gb, 2);
780 v->cbpcy_vlc = &ff_vc1_cbpcy_p_vlc[get_bits(gb, 2)];
784 av_log(v->s.avctx, AV_LOG_DEBUG, "VOP DQuant info\n");
785 vop_dquant_decoding(v);
791 v->ttmbf = get_bits1(gb);
794 v->ttfrm = ff_vc1_ttfrm_to_tt[get_bits(gb, 2)];
806 v->c_ac_table_index = decode012(gb);
807 if (v->s.pict_type == FF_I_TYPE || v->s.pict_type == FF_BI_TYPE)
809 v->y_ac_table_index = decode012(gb);
812 v->s.dc_table_index = get_bits1(gb);
815 if(v->s.pict_type == FF_BI_TYPE) {
816 v->s.pict_type = FF_B_TYPE;
822 int vc1_parse_frame_header_adv(VC1Context *v, GetBitContext* gb)
824 int pqindex, lowquant;
827 v->p_frame_skipped = 0;
830 v->fcm = decode012(gb);
832 if(!v->warn_interlaced++)
833 av_log(v->s.avctx, AV_LOG_ERROR, "Interlaced frames/fields support is not implemented\n");
837 switch(get_unary(gb, 0, 4)) {
839 v->s.pict_type = FF_P_TYPE;
842 v->s.pict_type = FF_B_TYPE;
845 v->s.pict_type = FF_I_TYPE;
848 v->s.pict_type = FF_BI_TYPE;
851 v->s.pict_type = FF_P_TYPE; // skipped pic
852 v->p_frame_skipped = 1;
858 if(!v->interlace || v->psf) {
859 v->rptfrm = get_bits(gb, 2);
861 v->tff = get_bits1(gb);
862 v->rptfrm = get_bits1(gb);
866 av_log_missing_feature(v->s.avctx, "Pan-scan", 0);
869 v->rnd = get_bits1(gb);
871 v->uvsamp = get_bits1(gb);
872 if(v->finterpflag) v->interpfrm = get_bits1(gb);
873 if(v->s.pict_type == FF_B_TYPE) {
874 v->bfraction_lut_index = get_vlc2(gb, ff_vc1_bfraction_vlc.table, VC1_BFRACTION_VLC_BITS, 1);
875 v->bfraction = ff_vc1_bfraction_lut[v->bfraction_lut_index];
876 if(v->bfraction == 0) {
877 v->s.pict_type = FF_BI_TYPE; /* XXX: should not happen here */
880 pqindex = get_bits(gb, 5);
881 if(!pqindex) return -1;
882 v->pqindex = pqindex;
883 if (v->quantizer_mode == QUANT_FRAME_IMPLICIT)
884 v->pq = ff_vc1_pquant_table[0][pqindex];
886 v->pq = ff_vc1_pquant_table[1][pqindex];
889 if (v->quantizer_mode == QUANT_FRAME_IMPLICIT)
890 v->pquantizer = pqindex < 9;
891 if (v->quantizer_mode == QUANT_NON_UNIFORM)
893 v->pqindex = pqindex;
894 if (pqindex < 9) v->halfpq = get_bits1(gb);
896 if (v->quantizer_mode == QUANT_FRAME_EXPLICIT)
897 v->pquantizer = get_bits1(gb);
899 v->postproc = get_bits(gb, 2);
901 if(v->s.pict_type == FF_I_TYPE || v->s.pict_type == FF_P_TYPE) v->use_ic = 0;
906 switch(v->s.pict_type) {
909 status = bitplane_decoding(v->acpred_plane, &v->acpred_is_raw, v);
910 if (status < 0) return -1;
911 av_log(v->s.avctx, AV_LOG_DEBUG, "ACPRED plane encoding: "
912 "Imode: %i, Invert: %i\n", status>>1, status&1);
913 v->condover = CONDOVER_NONE;
914 if(v->overlap && v->pq <= 8) {
915 v->condover = decode012(gb);
916 if(v->condover == CONDOVER_SELECT) {
917 status = bitplane_decoding(v->over_flags_plane, &v->overflg_is_raw, v);
918 if (status < 0) return -1;
919 av_log(v->s.avctx, AV_LOG_DEBUG, "CONDOVER plane encoding: "
920 "Imode: %i, Invert: %i\n", status>>1, status&1);
925 if (v->extended_mv) v->mvrange = get_unary(gb, 0, 3);
927 v->k_x = v->mvrange + 9 + (v->mvrange >> 1); //k_x can be 9 10 12 13
928 v->k_y = v->mvrange + 8; //k_y can be 8 9 10 11
929 v->range_x = 1 << (v->k_x - 1);
930 v->range_y = 1 << (v->k_y - 1);
932 if (v->pq < 5) v->tt_index = 0;
933 else if(v->pq < 13) v->tt_index = 1;
934 else v->tt_index = 2;
936 lowquant = (v->pq > 12) ? 0 : 1;
937 v->mv_mode = ff_vc1_mv_pmode_table[lowquant][get_unary(gb, 1, 4)];
938 if (v->mv_mode == MV_PMODE_INTENSITY_COMP)
941 v->mv_mode2 = ff_vc1_mv_pmode_table2[lowquant][get_unary(gb, 1, 3)];
942 v->lumscale = get_bits(gb, 6);
943 v->lumshift = get_bits(gb, 6);
944 /* fill lookup tables for intensity compensation */
947 shift = (255 - v->lumshift * 2) << 6;
951 scale = v->lumscale + 32;
953 shift = (v->lumshift - 64) << 6;
955 shift = v->lumshift << 6;
957 for(i = 0; i < 256; i++) {
958 v->luty[i] = av_clip_uint8((scale * i + shift + 32) >> 6);
959 v->lutuv[i] = av_clip_uint8((scale * (i - 128) + 128*64 + 32) >> 6);
963 if(v->mv_mode == MV_PMODE_1MV_HPEL || v->mv_mode == MV_PMODE_1MV_HPEL_BILIN)
964 v->s.quarter_sample = 0;
965 else if(v->mv_mode == MV_PMODE_INTENSITY_COMP) {
966 if(v->mv_mode2 == MV_PMODE_1MV_HPEL || v->mv_mode2 == MV_PMODE_1MV_HPEL_BILIN)
967 v->s.quarter_sample = 0;
969 v->s.quarter_sample = 1;
971 v->s.quarter_sample = 1;
972 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));
974 if ((v->mv_mode == MV_PMODE_INTENSITY_COMP &&
975 v->mv_mode2 == MV_PMODE_MIXED_MV)
976 || v->mv_mode == MV_PMODE_MIXED_MV)
978 status = bitplane_decoding(v->mv_type_mb_plane, &v->mv_type_is_raw, v);
979 if (status < 0) return -1;
980 av_log(v->s.avctx, AV_LOG_DEBUG, "MB MV Type plane encoding: "
981 "Imode: %i, Invert: %i\n", status>>1, status&1);
983 v->mv_type_is_raw = 0;
984 memset(v->mv_type_mb_plane, 0, v->s.mb_stride * v->s.mb_height);
986 status = bitplane_decoding(v->s.mbskip_table, &v->skip_is_raw, v);
987 if (status < 0) return -1;
988 av_log(v->s.avctx, AV_LOG_DEBUG, "MB Skip plane encoding: "
989 "Imode: %i, Invert: %i\n", status>>1, status&1);
991 /* Hopefully this is correct for P frames */
992 v->s.mv_table_index = get_bits(gb, 2); //but using ff_vc1_ tables
993 v->cbpcy_vlc = &ff_vc1_cbpcy_p_vlc[get_bits(gb, 2)];
996 av_log(v->s.avctx, AV_LOG_DEBUG, "VOP DQuant info\n");
997 vop_dquant_decoding(v);
1000 v->ttfrm = 0; //FIXME Is that so ?
1003 v->ttmbf = get_bits1(gb);
1006 v->ttfrm = ff_vc1_ttfrm_to_tt[get_bits(gb, 2)];
1014 if (v->extended_mv) v->mvrange = get_unary(gb, 0, 3);
1015 else v->mvrange = 0;
1016 v->k_x = v->mvrange + 9 + (v->mvrange >> 1); //k_x can be 9 10 12 13
1017 v->k_y = v->mvrange + 8; //k_y can be 8 9 10 11
1018 v->range_x = 1 << (v->k_x - 1);
1019 v->range_y = 1 << (v->k_y - 1);
1021 if (v->pq < 5) v->tt_index = 0;
1022 else if(v->pq < 13) v->tt_index = 1;
1023 else v->tt_index = 2;
1025 v->mv_mode = get_bits1(gb) ? MV_PMODE_1MV : MV_PMODE_1MV_HPEL_BILIN;
1026 v->s.quarter_sample = (v->mv_mode == MV_PMODE_1MV);
1027 v->s.mspel = v->s.quarter_sample;
1029 status = bitplane_decoding(v->direct_mb_plane, &v->dmb_is_raw, v);
1030 if (status < 0) return -1;
1031 av_log(v->s.avctx, AV_LOG_DEBUG, "MB Direct Type plane encoding: "
1032 "Imode: %i, Invert: %i\n", status>>1, status&1);
1033 status = bitplane_decoding(v->s.mbskip_table, &v->skip_is_raw, v);
1034 if (status < 0) return -1;
1035 av_log(v->s.avctx, AV_LOG_DEBUG, "MB Skip plane encoding: "
1036 "Imode: %i, Invert: %i\n", status>>1, status&1);
1038 v->s.mv_table_index = get_bits(gb, 2);
1039 v->cbpcy_vlc = &ff_vc1_cbpcy_p_vlc[get_bits(gb, 2)];
1043 av_log(v->s.avctx, AV_LOG_DEBUG, "VOP DQuant info\n");
1044 vop_dquant_decoding(v);
1050 v->ttmbf = get_bits1(gb);
1053 v->ttfrm = ff_vc1_ttfrm_to_tt[get_bits(gb, 2)];
1063 v->c_ac_table_index = decode012(gb);
1064 if (v->s.pict_type == FF_I_TYPE || v->s.pict_type == FF_BI_TYPE)
1066 v->y_ac_table_index = decode012(gb);
1069 v->s.dc_table_index = get_bits1(gb);
1070 if ((v->s.pict_type == FF_I_TYPE || v->s.pict_type == FF_BI_TYPE) && v->dquant) {
1071 av_log(v->s.avctx, AV_LOG_DEBUG, "VOP DQuant info\n");
1072 vop_dquant_decoding(v);
1076 if(v->s.pict_type == FF_BI_TYPE) {
1077 v->s.pict_type = FF_B_TYPE;