2 * VC-1 and WMV3 decoder common code
3 * Copyright (c) 2011 Mashiat Sarker Shakkhar
4 * Copyright (c) 2006-2007 Konstantin Shishkov
5 * Partly based on vc9.c (c) 2005 Anonymous, Alex Beregszaszi, Michael Niedermayer
7 * This file is part of FFmpeg.
9 * FFmpeg is free software; you can redistribute it and/or
10 * modify it under the terms of the GNU Lesser General Public
11 * License as published by the Free Software Foundation; either
12 * version 2.1 of the License, or (at your option) any later version.
14 * FFmpeg is distributed in the hope that it will be useful,
15 * but WITHOUT ANY WARRANTY; without even the implied warranty of
16 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
17 * Lesser General Public License for more details.
19 * You should have received a copy of the GNU Lesser General Public
20 * License along with FFmpeg; if not, write to the Free Software
21 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
26 * VC-1 and WMV3 decoder common code
33 #include "mpegvideo.h"
36 #include "msmpeg4data.h"
38 #include "simple_idct.h"
43 /***********************************************************************/
45 * @name VC-1 Bitplane decoding
63 /** @} */ //imode defines
65 /** Decode rows by checking if they are skipped
66 * @param plane Buffer to store decoded bits
67 * @param[in] width Width of this buffer
68 * @param[in] height Height of this buffer
69 * @param[in] stride of this buffer
71 static void decode_rowskip(uint8_t* plane, int width, int height, int stride,
76 for (y = 0; y < height; y++) {
77 if (!get_bits1(gb)) //rowskip
78 memset(plane, 0, width);
80 for (x = 0; x < width; x++)
81 plane[x] = get_bits1(gb);
86 /** Decode columns by checking if they are skipped
87 * @param plane Buffer to store decoded bits
88 * @param[in] width Width of this buffer
89 * @param[in] height Height of this buffer
90 * @param[in] stride of this buffer
91 * @todo FIXME: Optimize
93 static void decode_colskip(uint8_t* plane, int width, int height, int stride,
98 for (x = 0; x < width; x++) {
99 if (!get_bits1(gb)) //colskip
100 for (y = 0; y < height; y++)
103 for (y = 0; y < height; y++)
104 plane[y*stride] = get_bits1(gb);
109 /** Decode a bitplane's bits
110 * @param data bitplane where to store the decode bits
111 * @param[out] raw_flag pointer to the flag indicating that this bitplane is not coded explicitly
112 * @param v VC-1 context for bit reading and logging
114 * @todo FIXME: Optimize
116 static int bitplane_decoding(uint8_t* data, int *raw_flag, VC1Context *v)
118 GetBitContext *gb = &v->s.gb;
120 int imode, x, y, code, offset;
121 uint8_t invert, *planep = data;
122 int width, height, stride;
124 width = v->s.mb_width;
125 height = v->s.mb_height >> v->field_mode;
126 stride = v->s.mb_stride;
127 invert = get_bits1(gb);
128 imode = get_vlc2(gb, ff_vc1_imode_vlc.table, VC1_IMODE_VLC_BITS, 1);
133 //Data is actually read in the MB layer (same for all tests == "raw")
134 *raw_flag = 1; //invert ignored
138 if ((height * width) & 1) {
139 *planep++ = get_bits1(gb);
144 // decode bitplane as one long line
145 for (y = offset; y < height * width; y += 2) {
146 code = get_vlc2(gb, ff_vc1_norm2_vlc.table, VC1_NORM2_VLC_BITS, 1);
147 *planep++ = code & 1;
149 if (offset == width) {
151 planep += stride - width;
153 *planep++ = code >> 1;
155 if (offset == width) {
157 planep += stride - width;
163 if (!(height % 3) && (width % 3)) { // use 2x3 decoding
164 for (y = 0; y < height; y += 3) {
165 for (x = width & 1; x < width; x += 2) {
166 code = get_vlc2(gb, ff_vc1_norm6_vlc.table, VC1_NORM6_VLC_BITS, 2);
168 av_log(v->s.avctx, AV_LOG_DEBUG, "invalid NORM-6 VLC\n");
171 planep[x + 0] = (code >> 0) & 1;
172 planep[x + 1] = (code >> 1) & 1;
173 planep[x + 0 + stride] = (code >> 2) & 1;
174 planep[x + 1 + stride] = (code >> 3) & 1;
175 planep[x + 0 + stride * 2] = (code >> 4) & 1;
176 planep[x + 1 + stride * 2] = (code >> 5) & 1;
178 planep += stride * 3;
181 decode_colskip(data, 1, height, stride, &v->s.gb);
183 planep += (height & 1) * stride;
184 for (y = height & 1; y < height; y += 2) {
185 for (x = width % 3; x < width; x += 3) {
186 code = get_vlc2(gb, ff_vc1_norm6_vlc.table, VC1_NORM6_VLC_BITS, 2);
188 av_log(v->s.avctx, AV_LOG_DEBUG, "invalid NORM-6 VLC\n");
191 planep[x + 0] = (code >> 0) & 1;
192 planep[x + 1] = (code >> 1) & 1;
193 planep[x + 2] = (code >> 2) & 1;
194 planep[x + 0 + stride] = (code >> 3) & 1;
195 planep[x + 1 + stride] = (code >> 4) & 1;
196 planep[x + 2 + stride] = (code >> 5) & 1;
198 planep += stride * 2;
202 decode_colskip(data, x, height, stride, &v->s.gb);
204 decode_rowskip(data + x, width - x, 1, stride, &v->s.gb);
208 decode_rowskip(data, width, height, stride, &v->s.gb);
211 decode_colskip(data, width, height, stride, &v->s.gb);
217 /* Applying diff operator */
218 if (imode == IMODE_DIFF2 || imode == IMODE_DIFF6) {
221 for (x = 1; x < width; x++)
222 planep[x] ^= planep[x-1];
223 for (y = 1; y < height; y++) {
225 planep[0] ^= planep[-stride];
226 for (x = 1; x < width; x++) {
227 if (planep[x-1] != planep[x-stride]) planep[x] ^= invert;
228 else planep[x] ^= planep[x-1];
233 for (x = 0; x < stride * height; x++)
234 planep[x] = !planep[x]; //FIXME stride
236 return (imode << 1) + invert;
239 /** @} */ //Bitplane group
241 /***********************************************************************/
242 /** VOP Dquant decoding
243 * @param v VC-1 Context
245 static int vop_dquant_decoding(VC1Context *v)
247 GetBitContext *gb = &v->s.gb;
251 if (v->dquant == 2) {
252 pqdiff = get_bits(gb, 3);
254 v->altpq = get_bits(gb, 5);
256 v->altpq = v->pq + pqdiff + 1;
258 v->dquantfrm = get_bits1(gb);
260 v->dqprofile = get_bits(gb, 2);
261 switch (v->dqprofile) {
262 case DQPROFILE_SINGLE_EDGE:
263 case DQPROFILE_DOUBLE_EDGES:
264 v->dqsbedge = get_bits(gb, 2);
266 case DQPROFILE_ALL_MBS:
267 v->dqbilevel = get_bits1(gb);
273 if (v->dqbilevel || v->dqprofile != DQPROFILE_ALL_MBS) {
274 pqdiff = get_bits(gb, 3);
276 v->altpq = get_bits(gb, 5);
278 v->altpq = v->pq + pqdiff + 1;
285 static int decode_sequence_header_adv(VC1Context *v, GetBitContext *gb);
288 * Decode Simple/Main Profiles sequence header
289 * @see Figure 7-8, p16-17
290 * @param avctx Codec context
291 * @param gb GetBit context initialized from Codec context extra_data
294 int ff_vc1_decode_sequence_header(AVCodecContext *avctx, VC1Context *v, GetBitContext *gb)
296 av_log(avctx, AV_LOG_DEBUG, "Header: %0X\n", show_bits_long(gb, 32));
297 v->profile = get_bits(gb, 2);
298 if (v->profile == PROFILE_COMPLEX) {
299 av_log(avctx, AV_LOG_WARNING, "WMV3 Complex Profile is not fully supported\n");
302 if (v->profile == PROFILE_ADVANCED) {
303 v->zz_8x4 = ff_vc1_adv_progressive_8x4_zz;
304 v->zz_4x8 = ff_vc1_adv_progressive_4x8_zz;
305 return decode_sequence_header_adv(v, gb);
307 v->zz_8x4 = ff_wmv2_scantableA;
308 v->zz_4x8 = ff_wmv2_scantableB;
309 v->res_y411 = get_bits1(gb);
310 v->res_sprite = get_bits1(gb);
312 av_log(avctx, AV_LOG_ERROR,
313 "Old interlaced mode is not supported\n");
319 v->frmrtq_postproc = get_bits(gb, 3); //common
320 // (bitrate-32kbps)/64kbps
321 v->bitrtq_postproc = get_bits(gb, 5); //common
322 v->s.loop_filter = get_bits1(gb); //common
323 if (v->s.loop_filter == 1 && v->profile == PROFILE_SIMPLE) {
324 av_log(avctx, AV_LOG_ERROR,
325 "LOOPFILTER shall not be enabled in Simple Profile\n");
327 if (v->s.avctx->skip_loop_filter >= AVDISCARD_ALL)
328 v->s.loop_filter = 0;
330 v->res_x8 = get_bits1(gb); //reserved
331 v->multires = get_bits1(gb);
332 v->res_fasttx = get_bits1(gb);
333 if (!v->res_fasttx) {
334 v->vc1dsp.vc1_inv_trans_8x8 = ff_simple_idct_8;
335 v->vc1dsp.vc1_inv_trans_8x4 = ff_simple_idct84_add;
336 v->vc1dsp.vc1_inv_trans_4x8 = ff_simple_idct48_add;
337 v->vc1dsp.vc1_inv_trans_4x4 = ff_simple_idct44_add;
338 v->vc1dsp.vc1_inv_trans_8x8_dc = ff_simple_idct_add_8;
339 v->vc1dsp.vc1_inv_trans_8x4_dc = ff_simple_idct84_add;
340 v->vc1dsp.vc1_inv_trans_4x8_dc = ff_simple_idct48_add;
341 v->vc1dsp.vc1_inv_trans_4x4_dc = ff_simple_idct44_add;
344 v->fastuvmc = get_bits1(gb); //common
345 if (!v->profile && !v->fastuvmc) {
346 av_log(avctx, AV_LOG_ERROR,
347 "FASTUVMC unavailable in Simple Profile\n");
350 v->extended_mv = get_bits1(gb); //common
351 if (!v->profile && v->extended_mv)
353 av_log(avctx, AV_LOG_ERROR,
354 "Extended MVs unavailable in Simple Profile\n");
357 v->dquant = get_bits(gb, 2); //common
358 v->vstransform = get_bits1(gb); //common
360 v->res_transtab = get_bits1(gb);
363 av_log(avctx, AV_LOG_ERROR,
364 "1 for reserved RES_TRANSTAB is forbidden\n");
368 v->overlap = get_bits1(gb); //common
370 v->s.resync_marker = get_bits1(gb);
371 v->rangered = get_bits1(gb);
372 if (v->rangered && v->profile == PROFILE_SIMPLE) {
373 av_log(avctx, AV_LOG_INFO,
374 "RANGERED should be set to 0 in Simple Profile\n");
377 v->s.max_b_frames = avctx->max_b_frames = get_bits(gb, 3); //common
378 v->quantizer_mode = get_bits(gb, 2); //common
380 v->finterpflag = get_bits1(gb); //common
383 int w = get_bits(gb, 11);
384 int h = get_bits(gb, 11);
385 avcodec_set_dimensions(v->s.avctx, w, h);
386 skip_bits(gb, 5); //frame rate
387 v->res_x8 = get_bits1(gb);
388 if (get_bits1(gb)) { // something to do with DC VLC selection
389 av_log(avctx, AV_LOG_ERROR, "Unsupported sprite feature\n");
392 skip_bits(gb, 3); //slice code
395 v->res_rtm_flag = get_bits1(gb); //reserved
397 if (!v->res_rtm_flag) {
398 av_log(avctx, AV_LOG_ERROR,
399 "Old WMV3 version detected, some frames may be decoded incorrectly\n");
402 //TODO: figure out what they mean (always 0x402F)
405 av_log(avctx, AV_LOG_DEBUG,
406 "Profile %i:\nfrmrtq_postproc=%i, bitrtq_postproc=%i\n"
407 "LoopFilter=%i, MultiRes=%i, FastUVMC=%i, Extended MV=%i\n"
408 "Rangered=%i, VSTransform=%i, Overlap=%i, SyncMarker=%i\n"
409 "DQuant=%i, Quantizer mode=%i, Max B frames=%i\n",
410 v->profile, v->frmrtq_postproc, v->bitrtq_postproc,
411 v->s.loop_filter, v->multires, v->fastuvmc, v->extended_mv,
412 v->rangered, v->vstransform, v->overlap, v->s.resync_marker,
413 v->dquant, v->quantizer_mode, avctx->max_b_frames);
417 static int decode_sequence_header_adv(VC1Context *v, GetBitContext *gb)
420 v->level = get_bits(gb, 3);
422 av_log(v->s.avctx, AV_LOG_ERROR, "Reserved LEVEL %i\n",v->level);
424 v->chromaformat = get_bits(gb, 2);
425 if (v->chromaformat != 1) {
426 av_log(v->s.avctx, AV_LOG_ERROR,
427 "Only 4:2:0 chroma format supported\n");
432 v->frmrtq_postproc = get_bits(gb, 3); //common
433 // (bitrate-32kbps)/64kbps
434 v->bitrtq_postproc = get_bits(gb, 5); //common
435 v->postprocflag = get_bits1(gb); //common
437 v->max_coded_width = (get_bits(gb, 12) + 1) << 1;
438 v->max_coded_height = (get_bits(gb, 12) + 1) << 1;
439 v->broadcast = get_bits1(gb);
440 v->interlace = get_bits1(gb);
441 v->tfcntrflag = get_bits1(gb);
442 v->finterpflag = get_bits1(gb);
443 skip_bits1(gb); // reserved
445 av_log(v->s.avctx, AV_LOG_DEBUG,
446 "Advanced Profile level %i:\nfrmrtq_postproc=%i, bitrtq_postproc=%i\n"
447 "LoopFilter=%i, ChromaFormat=%i, Pulldown=%i, Interlace: %i\n"
448 "TFCTRflag=%i, FINTERPflag=%i\n",
449 v->level, v->frmrtq_postproc, v->bitrtq_postproc,
450 v->s.loop_filter, v->chromaformat, v->broadcast, v->interlace,
451 v->tfcntrflag, v->finterpflag);
453 v->psf = get_bits1(gb);
454 if (v->psf) { //PsF, 6.1.13
455 av_log(v->s.avctx, AV_LOG_ERROR, "Progressive Segmented Frame mode: not supported (yet)\n");
458 v->s.max_b_frames = v->s.avctx->max_b_frames = 7;
459 if (get_bits1(gb)) { //Display Info - decoding is not affected by it
461 av_log(v->s.avctx, AV_LOG_DEBUG, "Display extended info:\n");
462 w = get_bits(gb, 14) + 1;
463 h = get_bits(gb, 14) + 1;
464 av_log(v->s.avctx, AV_LOG_DEBUG, "Display dimensions: %ix%i\n", w, h);
466 ar = get_bits(gb, 4);
468 v->s.avctx->sample_aspect_ratio = ff_vc1_pixel_aspect[ar];
469 } else if (ar == 15) {
470 w = get_bits(gb, 8) + 1;
471 h = get_bits(gb, 8) + 1;
472 v->s.avctx->sample_aspect_ratio = (AVRational){w, h};
474 av_reduce(&v->s.avctx->sample_aspect_ratio.num,
475 &v->s.avctx->sample_aspect_ratio.den,
476 v->s.avctx->height * w,
477 v->s.avctx->width * h,
480 av_log(v->s.avctx, AV_LOG_DEBUG, "Aspect: %i:%i\n",
481 v->s.avctx->sample_aspect_ratio.num,
482 v->s.avctx->sample_aspect_ratio.den);
484 if (get_bits1(gb)) { //framerate stuff
486 v->s.avctx->time_base.num = 32;
487 v->s.avctx->time_base.den = get_bits(gb, 16) + 1;
490 nr = get_bits(gb, 8);
491 dr = get_bits(gb, 4);
492 if (nr > 0 && nr < 8 && dr > 0 && dr < 3) {
493 v->s.avctx->time_base.num = ff_vc1_fps_dr[dr - 1];
494 v->s.avctx->time_base.den = ff_vc1_fps_nr[nr - 1] * 1000;
497 if (v->broadcast) { // Pulldown may be present
498 v->s.avctx->time_base.den *= 2;
499 v->s.avctx->ticks_per_frame = 2;
504 v->s.avctx->color_primaries = get_bits(gb, 8);
505 v->s.avctx->color_trc = get_bits(gb, 8);
506 v->s.avctx->colorspace = get_bits(gb, 8);
507 v->s.avctx->color_range = AVCOL_RANGE_MPEG;
511 v->hrd_param_flag = get_bits1(gb);
512 if (v->hrd_param_flag) {
514 v->hrd_num_leaky_buckets = get_bits(gb, 5);
515 skip_bits(gb, 4); //bitrate exponent
516 skip_bits(gb, 4); //buffer size exponent
517 for (i = 0; i < v->hrd_num_leaky_buckets; i++) {
518 skip_bits(gb, 16); //hrd_rate[n]
519 skip_bits(gb, 16); //hrd_buffer[n]
525 int ff_vc1_decode_entry_point(AVCodecContext *avctx, VC1Context *v, GetBitContext *gb)
530 av_log(avctx, AV_LOG_DEBUG, "Entry point: %08X\n", show_bits_long(gb, 32));
531 v->broken_link = get_bits1(gb);
532 v->closed_entry = get_bits1(gb);
533 v->panscanflag = get_bits1(gb);
534 v->refdist_flag = get_bits1(gb);
535 v->s.loop_filter = get_bits1(gb);
536 if (v->s.avctx->skip_loop_filter >= AVDISCARD_ALL)
537 v->s.loop_filter = 0;
538 v->fastuvmc = get_bits1(gb);
539 v->extended_mv = get_bits1(gb);
540 v->dquant = get_bits(gb, 2);
541 v->vstransform = get_bits1(gb);
542 v->overlap = get_bits1(gb);
543 v->quantizer_mode = get_bits(gb, 2);
545 if (v->hrd_param_flag) {
546 for (i = 0; i < v->hrd_num_leaky_buckets; i++) {
547 skip_bits(gb, 8); //hrd_full[n]
552 w = (get_bits(gb, 12)+1)<<1;
553 h = (get_bits(gb, 12)+1)<<1;
555 w = v->max_coded_width;
556 h = v->max_coded_height;
558 avcodec_set_dimensions(avctx, w, h);
560 v->extended_dmv = get_bits1(gb);
561 if ((v->range_mapy_flag = get_bits1(gb))) {
562 av_log(avctx, AV_LOG_ERROR, "Luma scaling is not supported, expect wrong picture\n");
563 v->range_mapy = get_bits(gb, 3);
565 if ((v->range_mapuv_flag = get_bits1(gb))) {
566 av_log(avctx, AV_LOG_ERROR, "Chroma scaling is not supported, expect wrong picture\n");
567 v->range_mapuv = get_bits(gb, 3);
570 av_log(avctx, AV_LOG_DEBUG, "Entry point info:\n"
571 "BrokenLink=%i, ClosedEntry=%i, PanscanFlag=%i\n"
572 "RefDist=%i, Postproc=%i, FastUVMC=%i, ExtMV=%i\n"
573 "DQuant=%i, VSTransform=%i, Overlap=%i, Qmode=%i\n",
574 v->broken_link, v->closed_entry, v->panscanflag, v->refdist_flag, v->s.loop_filter,
575 v->fastuvmc, v->extended_mv, v->dquant, v->vstransform, v->overlap, v->quantizer_mode);
580 int ff_vc1_parse_frame_header(VC1Context *v, GetBitContext* gb)
582 int pqindex, lowquant, status;
585 v->interpfrm = get_bits1(gb);
586 if (!v->s.avctx->codec)
588 if (v->s.avctx->codec_id == AV_CODEC_ID_MSS2)
591 v->multires = get_bits(gb, 2) == 1;
593 skip_bits(gb, 2); //framecnt unused
596 v->rangeredfrm = get_bits1(gb);
597 v->s.pict_type = get_bits1(gb);
598 if (v->s.avctx->max_b_frames) {
599 if (!v->s.pict_type) {
601 v->s.pict_type = AV_PICTURE_TYPE_I;
603 v->s.pict_type = AV_PICTURE_TYPE_B;
605 v->s.pict_type = AV_PICTURE_TYPE_P;
607 v->s.pict_type = v->s.pict_type ? AV_PICTURE_TYPE_P : AV_PICTURE_TYPE_I;
610 if (v->s.pict_type == AV_PICTURE_TYPE_B) {
611 v->bfraction_lut_index = get_vlc2(gb, ff_vc1_bfraction_vlc.table, VC1_BFRACTION_VLC_BITS, 1);
612 v->bfraction = ff_vc1_bfraction_lut[v->bfraction_lut_index];
613 if (v->bfraction == 0) {
614 v->s.pict_type = AV_PICTURE_TYPE_BI;
617 if (v->s.pict_type == AV_PICTURE_TYPE_I || v->s.pict_type == AV_PICTURE_TYPE_BI)
618 skip_bits(gb, 7); // skip buffer fullness
624 if (v->s.pict_type == AV_PICTURE_TYPE_I || v->s.pict_type == AV_PICTURE_TYPE_BI)
626 if (v->s.pict_type == AV_PICTURE_TYPE_P)
629 /* Quantizer stuff */
630 pqindex = get_bits(gb, 5);
633 if (v->quantizer_mode == QUANT_FRAME_IMPLICIT)
634 v->pq = ff_vc1_pquant_table[0][pqindex];
636 v->pq = ff_vc1_pquant_table[1][pqindex];
639 if (v->quantizer_mode == QUANT_FRAME_IMPLICIT)
640 v->pquantizer = pqindex < 9;
641 if (v->quantizer_mode == QUANT_NON_UNIFORM)
643 v->pqindex = pqindex;
645 v->halfpq = get_bits1(gb);
648 if (v->quantizer_mode == QUANT_FRAME_EXPLICIT)
649 v->pquantizer = get_bits1(gb);
651 if (v->extended_mv == 1)
652 v->mvrange = get_unary(gb, 0, 3);
653 v->k_x = v->mvrange + 9 + (v->mvrange >> 1); //k_x can be 9 10 12 13
654 v->k_y = v->mvrange + 8; //k_y can be 8 9 10 11
655 v->range_x = 1 << (v->k_x - 1);
656 v->range_y = 1 << (v->k_y - 1);
657 if (v->multires && v->s.pict_type != AV_PICTURE_TYPE_B)
658 v->respic = get_bits(gb, 2);
660 if (v->res_x8 && (v->s.pict_type == AV_PICTURE_TYPE_I || v->s.pict_type == AV_PICTURE_TYPE_BI)) {
661 v->x8_type = get_bits1(gb);
664 av_dlog(v->s.avctx, "%c Frame: QP=[%i]%i (+%i/2) %i\n",
665 (v->s.pict_type == AV_PICTURE_TYPE_P) ? 'P' : ((v->s.pict_type == AV_PICTURE_TYPE_I) ? 'I' : 'B'),
666 pqindex, v->pq, v->halfpq, v->rangeredfrm);
668 if (v->s.pict_type == AV_PICTURE_TYPE_I || v->s.pict_type == AV_PICTURE_TYPE_P)
671 switch (v->s.pict_type) {
672 case AV_PICTURE_TYPE_P:
673 if (v->pq < 5) v->tt_index = 0;
674 else if (v->pq < 13) v->tt_index = 1;
675 else v->tt_index = 2;
677 lowquant = (v->pq > 12) ? 0 : 1;
678 v->mv_mode = ff_vc1_mv_pmode_table[lowquant][get_unary(gb, 1, 4)];
679 if (v->mv_mode == MV_PMODE_INTENSITY_COMP) {
681 v->mv_mode2 = ff_vc1_mv_pmode_table2[lowquant][get_unary(gb, 1, 3)];
682 v->lumscale = get_bits(gb, 6);
683 v->lumshift = get_bits(gb, 6);
685 /* fill lookup tables for intensity compensation */
688 shift = (255 - v->lumshift * 2) << 6;
689 if (v->lumshift > 31)
692 scale = v->lumscale + 32;
693 if (v->lumshift > 31)
694 shift = (v->lumshift - 64) << 6;
696 shift = v->lumshift << 6;
698 for (i = 0; i < 256; i++) {
699 v->luty[i] = av_clip_uint8((scale * i + shift + 32) >> 6);
700 v->lutuv[i] = av_clip_uint8((scale * (i - 128) + 128*64 + 32) >> 6);
703 v->qs_last = v->s.quarter_sample;
704 if (v->mv_mode == MV_PMODE_1MV_HPEL || v->mv_mode == MV_PMODE_1MV_HPEL_BILIN)
705 v->s.quarter_sample = 0;
706 else if (v->mv_mode == MV_PMODE_INTENSITY_COMP) {
707 if (v->mv_mode2 == MV_PMODE_1MV_HPEL || v->mv_mode2 == MV_PMODE_1MV_HPEL_BILIN)
708 v->s.quarter_sample = 0;
710 v->s.quarter_sample = 1;
712 v->s.quarter_sample = 1;
713 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));
715 if ((v->mv_mode == MV_PMODE_INTENSITY_COMP &&
716 v->mv_mode2 == MV_PMODE_MIXED_MV) ||
717 v->mv_mode == MV_PMODE_MIXED_MV) {
718 status = bitplane_decoding(v->mv_type_mb_plane, &v->mv_type_is_raw, v);
721 av_log(v->s.avctx, AV_LOG_DEBUG, "MB MV Type plane encoding: "
722 "Imode: %i, Invert: %i\n", status>>1, status&1);
724 v->mv_type_is_raw = 0;
725 memset(v->mv_type_mb_plane, 0, v->s.mb_stride * v->s.mb_height);
727 status = bitplane_decoding(v->s.mbskip_table, &v->skip_is_raw, v);
730 av_log(v->s.avctx, AV_LOG_DEBUG, "MB Skip plane encoding: "
731 "Imode: %i, Invert: %i\n", status>>1, status&1);
733 /* Hopefully this is correct for P frames */
734 v->s.mv_table_index = get_bits(gb, 2); //but using ff_vc1_ tables
735 v->cbpcy_vlc = &ff_vc1_cbpcy_p_vlc[get_bits(gb, 2)];
738 av_log(v->s.avctx, AV_LOG_DEBUG, "VOP DQuant info\n");
739 vop_dquant_decoding(v);
742 v->ttfrm = 0; //FIXME Is that so ?
743 if (v->vstransform) {
744 v->ttmbf = get_bits1(gb);
746 v->ttfrm = ff_vc1_ttfrm_to_tt[get_bits(gb, 2)];
753 case AV_PICTURE_TYPE_B:
754 if (v->pq < 5) v->tt_index = 0;
755 else if (v->pq < 13) v->tt_index = 1;
756 else v->tt_index = 2;
758 v->mv_mode = get_bits1(gb) ? MV_PMODE_1MV : MV_PMODE_1MV_HPEL_BILIN;
759 v->qs_last = v->s.quarter_sample;
760 v->s.quarter_sample = (v->mv_mode == MV_PMODE_1MV);
761 v->s.mspel = v->s.quarter_sample;
763 status = bitplane_decoding(v->direct_mb_plane, &v->dmb_is_raw, v);
766 av_log(v->s.avctx, AV_LOG_DEBUG, "MB Direct Type plane encoding: "
767 "Imode: %i, Invert: %i\n", status>>1, status&1);
768 status = bitplane_decoding(v->s.mbskip_table, &v->skip_is_raw, v);
771 av_log(v->s.avctx, AV_LOG_DEBUG, "MB Skip plane encoding: "
772 "Imode: %i, Invert: %i\n", status>>1, status&1);
774 v->s.mv_table_index = get_bits(gb, 2);
775 v->cbpcy_vlc = &ff_vc1_cbpcy_p_vlc[get_bits(gb, 2)];
778 av_log(v->s.avctx, AV_LOG_DEBUG, "VOP DQuant info\n");
779 vop_dquant_decoding(v);
783 if (v->vstransform) {
784 v->ttmbf = get_bits1(gb);
786 v->ttfrm = ff_vc1_ttfrm_to_tt[get_bits(gb, 2)];
797 v->c_ac_table_index = decode012(gb);
798 if (v->s.pict_type == AV_PICTURE_TYPE_I || v->s.pict_type == AV_PICTURE_TYPE_BI) {
799 v->y_ac_table_index = decode012(gb);
802 v->s.dc_table_index = get_bits1(gb);
805 if (v->s.pict_type == AV_PICTURE_TYPE_BI) {
806 v->s.pict_type = AV_PICTURE_TYPE_B;
812 /* fill lookup tables for intensity compensation */
813 #define INIT_LUT(lumscale, lumshift, luty, lutuv) \
816 shift = (255 - lumshift * 2) << 6; \
820 scale = lumscale + 32; \
822 shift = (lumshift - 64) << 6; \
824 shift = lumshift << 6; \
826 for (i = 0; i < 256; i++) { \
827 luty[i] = av_clip_uint8((scale * i + shift + 32) >> 6); \
828 lutuv[i] = av_clip_uint8((scale * (i - 128) + 128*64 + 32) >> 6); \
831 int ff_vc1_parse_frame_header_adv(VC1Context *v, GetBitContext* gb)
833 int pqindex, lowquant;
835 int mbmodetab, imvtab, icbptab, twomvbptab, fourmvbptab; /* useful only for debugging */
836 int scale, shift, i; /* for initializing LUT for intensity compensation */
840 v->p_frame_skipped = 0;
841 if (v->second_field) {
842 if(v->fcm!=2 || v->field_mode!=1)
844 v->s.pict_type = (v->fptype & 1) ? AV_PICTURE_TYPE_P : AV_PICTURE_TYPE_I;
846 v->s.pict_type = (v->fptype & 1) ? AV_PICTURE_TYPE_BI : AV_PICTURE_TYPE_B;
847 v->s.current_picture_ptr->f.pict_type = v->s.pict_type;
848 if (!v->pic_header_flag)
849 goto parse_common_info;
856 if (fcm == ILACE_FIELD)
858 if (!v->warn_interlaced++)
859 av_log(v->s.avctx, AV_LOG_ERROR,
860 "Interlaced frames/fields support is incomplete\n");
865 if (!v->first_pic_header_flag && v->field_mode != field_mode)
867 v->field_mode = field_mode;
871 v->fptype = get_bits(gb, 3);
872 v->s.pict_type = (v->fptype & 2) ? AV_PICTURE_TYPE_P : AV_PICTURE_TYPE_I;
873 if (v->fptype & 4) // B-picture
874 v->s.pict_type = (v->fptype & 2) ? AV_PICTURE_TYPE_BI : AV_PICTURE_TYPE_B;
876 switch (get_unary(gb, 0, 4)) {
878 v->s.pict_type = AV_PICTURE_TYPE_P;
881 v->s.pict_type = AV_PICTURE_TYPE_B;
884 v->s.pict_type = AV_PICTURE_TYPE_I;
887 v->s.pict_type = AV_PICTURE_TYPE_BI;
890 v->s.pict_type = AV_PICTURE_TYPE_P; // skipped pic
891 v->p_frame_skipped = 1;
898 if (!v->interlace || v->psf) {
899 v->rptfrm = get_bits(gb, 2);
901 v->tff = get_bits1(gb);
902 v->rff = get_bits1(gb);
905 if (v->panscanflag) {
906 av_log_missing_feature(v->s.avctx, "Pan-scan", 0);
909 if (v->p_frame_skipped) {
912 v->rnd = get_bits1(gb);
914 v->uvsamp = get_bits1(gb);
915 if(!ff_vc1_bfraction_vlc.table)
916 return 0; //parsing only, vlc tables havnt been allocated
918 if (!v->refdist_flag)
920 else if ((v->s.pict_type != AV_PICTURE_TYPE_B) && (v->s.pict_type != AV_PICTURE_TYPE_BI)) {
921 v->refdist = get_bits(gb, 2);
923 v->refdist += get_unary(gb, 0, 16);
925 if ((v->s.pict_type == AV_PICTURE_TYPE_B) || (v->s.pict_type == AV_PICTURE_TYPE_BI)) {
926 v->bfraction_lut_index = get_vlc2(gb, ff_vc1_bfraction_vlc.table, VC1_BFRACTION_VLC_BITS, 1);
927 v->bfraction = ff_vc1_bfraction_lut[v->bfraction_lut_index];
928 v->frfd = (v->bfraction * v->refdist) >> 8;
929 v->brfd = v->refdist - v->frfd - 1;
933 goto parse_common_info;
935 if (v->fcm == PROGRESSIVE) {
937 v->interpfrm = get_bits1(gb);
938 if (v->s.pict_type == AV_PICTURE_TYPE_B) {
939 v->bfraction_lut_index = get_vlc2(gb, ff_vc1_bfraction_vlc.table, VC1_BFRACTION_VLC_BITS, 1);
940 v->bfraction = ff_vc1_bfraction_lut[v->bfraction_lut_index];
941 if (v->bfraction == 0) {
942 v->s.pict_type = AV_PICTURE_TYPE_BI; /* XXX: should not happen here */
949 v->cur_field_type = !(v->tff ^ v->second_field);
950 pqindex = get_bits(gb, 5);
953 v->pqindex = pqindex;
954 if (v->quantizer_mode == QUANT_FRAME_IMPLICIT)
955 v->pq = ff_vc1_pquant_table[0][pqindex];
957 v->pq = ff_vc1_pquant_table[1][pqindex];
960 if (v->quantizer_mode == QUANT_FRAME_IMPLICIT)
961 v->pquantizer = pqindex < 9;
962 if (v->quantizer_mode == QUANT_NON_UNIFORM)
964 v->pqindex = pqindex;
966 v->halfpq = get_bits1(gb);
969 if (v->quantizer_mode == QUANT_FRAME_EXPLICIT)
970 v->pquantizer = get_bits1(gb);
972 v->postproc = get_bits(gb, 2);
974 if (v->s.pict_type == AV_PICTURE_TYPE_I || v->s.pict_type == AV_PICTURE_TYPE_P)
980 switch (v->s.pict_type) {
981 case AV_PICTURE_TYPE_I:
982 case AV_PICTURE_TYPE_BI:
983 if (v->fcm == ILACE_FRAME) { //interlace frame picture
984 status = bitplane_decoding(v->fieldtx_plane, &v->fieldtx_is_raw, v);
987 av_log(v->s.avctx, AV_LOG_DEBUG, "FIELDTX plane encoding: "
988 "Imode: %i, Invert: %i\n", status>>1, status&1);
990 status = bitplane_decoding(v->acpred_plane, &v->acpred_is_raw, v);
993 av_log(v->s.avctx, AV_LOG_DEBUG, "ACPRED plane encoding: "
994 "Imode: %i, Invert: %i\n", status>>1, status&1);
995 v->condover = CONDOVER_NONE;
996 if (v->overlap && v->pq <= 8) {
997 v->condover = decode012(gb);
998 if (v->condover == CONDOVER_SELECT) {
999 status = bitplane_decoding(v->over_flags_plane, &v->overflg_is_raw, v);
1002 av_log(v->s.avctx, AV_LOG_DEBUG, "CONDOVER plane encoding: "
1003 "Imode: %i, Invert: %i\n", status>>1, status&1);
1007 case AV_PICTURE_TYPE_P:
1008 if (v->field_mode) {
1009 v->numref = get_bits1(gb);
1011 v->reffield = get_bits1(gb);
1012 v->ref_field_type[0] = v->reffield ^ !v->cur_field_type;
1016 v->mvrange = get_unary(gb, 0, 3);
1020 if (v->extended_dmv)
1021 v->dmvrange = get_unary(gb, 0, 3);
1024 if (v->fcm == ILACE_FRAME) { // interlaced frame picture
1025 v->fourmvswitch = get_bits1(gb);
1026 v->intcomp = get_bits1(gb);
1028 v->lumscale = get_bits(gb, 6);
1029 v->lumshift = get_bits(gb, 6);
1030 INIT_LUT(v->lumscale, v->lumshift, v->luty, v->lutuv);
1032 status = bitplane_decoding(v->s.mbskip_table, &v->skip_is_raw, v);
1033 av_log(v->s.avctx, AV_LOG_DEBUG, "SKIPMB plane encoding: "
1034 "Imode: %i, Invert: %i\n", status>>1, status&1);
1035 mbmodetab = get_bits(gb, 2);
1036 if (v->fourmvswitch)
1037 v->mbmode_vlc = &ff_vc1_intfr_4mv_mbmode_vlc[mbmodetab];
1039 v->mbmode_vlc = &ff_vc1_intfr_non4mv_mbmode_vlc[mbmodetab];
1040 imvtab = get_bits(gb, 2);
1041 v->imv_vlc = &ff_vc1_1ref_mvdata_vlc[imvtab];
1042 // interlaced p-picture cbpcy range is [1, 63]
1043 icbptab = get_bits(gb, 3);
1044 v->cbpcy_vlc = &ff_vc1_icbpcy_vlc[icbptab];
1045 twomvbptab = get_bits(gb, 2);
1046 v->twomvbp_vlc = &ff_vc1_2mv_block_pattern_vlc[twomvbptab];
1047 if (v->fourmvswitch) {
1048 fourmvbptab = get_bits(gb, 2);
1049 v->fourmvbp_vlc = &ff_vc1_4mv_block_pattern_vlc[fourmvbptab];
1053 v->k_x = v->mvrange + 9 + (v->mvrange >> 1); //k_x can be 9 10 12 13
1054 v->k_y = v->mvrange + 8; //k_y can be 8 9 10 11
1055 v->range_x = 1 << (v->k_x - 1);
1056 v->range_y = 1 << (v->k_y - 1);
1060 else if (v->pq < 13)
1064 if (v->fcm != ILACE_FRAME) {
1066 mvmode = get_unary(gb, 1, 4);
1067 lowquant = (v->pq > 12) ? 0 : 1;
1068 v->mv_mode = ff_vc1_mv_pmode_table[lowquant][mvmode];
1069 if (v->mv_mode == MV_PMODE_INTENSITY_COMP) {
1071 mvmode2 = get_unary(gb, 1, 3);
1072 v->mv_mode2 = ff_vc1_mv_pmode_table2[lowquant][mvmode2];
1074 v->intcompfield = decode210(gb);
1075 v->lumscale = get_bits(gb, 6);
1076 v->lumshift = get_bits(gb, 6);
1077 INIT_LUT(v->lumscale, v->lumshift, v->luty, v->lutuv);
1078 if ((v->field_mode) && !v->intcompfield) {
1079 v->lumscale2 = get_bits(gb, 6);
1080 v->lumshift2 = get_bits(gb, 6);
1081 INIT_LUT(v->lumscale2, v->lumshift2, v->luty2, v->lutuv2);
1085 v->qs_last = v->s.quarter_sample;
1086 if (v->mv_mode == MV_PMODE_1MV_HPEL || v->mv_mode == MV_PMODE_1MV_HPEL_BILIN)
1087 v->s.quarter_sample = 0;
1088 else if (v->mv_mode == MV_PMODE_INTENSITY_COMP) {
1089 if (v->mv_mode2 == MV_PMODE_1MV_HPEL || v->mv_mode2 == MV_PMODE_1MV_HPEL_BILIN)
1090 v->s.quarter_sample = 0;
1092 v->s.quarter_sample = 1;
1094 v->s.quarter_sample = 1;
1095 v->s.mspel = !(v->mv_mode == MV_PMODE_1MV_HPEL_BILIN
1096 || (v->mv_mode == MV_PMODE_INTENSITY_COMP
1097 && v->mv_mode2 == MV_PMODE_1MV_HPEL_BILIN));
1099 if (v->fcm == PROGRESSIVE) { // progressive
1100 if ((v->mv_mode == MV_PMODE_INTENSITY_COMP &&
1101 v->mv_mode2 == MV_PMODE_MIXED_MV)
1102 || v->mv_mode == MV_PMODE_MIXED_MV) {
1103 status = bitplane_decoding(v->mv_type_mb_plane, &v->mv_type_is_raw, v);
1106 av_log(v->s.avctx, AV_LOG_DEBUG, "MB MV Type plane encoding: "
1107 "Imode: %i, Invert: %i\n", status>>1, status&1);
1109 v->mv_type_is_raw = 0;
1110 memset(v->mv_type_mb_plane, 0, v->s.mb_stride * v->s.mb_height);
1112 status = bitplane_decoding(v->s.mbskip_table, &v->skip_is_raw, v);
1115 av_log(v->s.avctx, AV_LOG_DEBUG, "MB Skip plane encoding: "
1116 "Imode: %i, Invert: %i\n", status>>1, status&1);
1118 /* Hopefully this is correct for P frames */
1119 v->s.mv_table_index = get_bits(gb, 2); //but using ff_vc1_ tables
1120 v->cbpcy_vlc = &ff_vc1_cbpcy_p_vlc[get_bits(gb, 2)];
1121 } else if (v->fcm == ILACE_FRAME) { // frame interlaced
1122 v->qs_last = v->s.quarter_sample;
1123 v->s.quarter_sample = 1;
1125 } else { // field interlaced
1126 mbmodetab = get_bits(gb, 3);
1127 imvtab = get_bits(gb, 2 + v->numref);
1129 v->imv_vlc = &ff_vc1_1ref_mvdata_vlc[imvtab];
1131 v->imv_vlc = &ff_vc1_2ref_mvdata_vlc[imvtab];
1132 icbptab = get_bits(gb, 3);
1133 v->cbpcy_vlc = &ff_vc1_icbpcy_vlc[icbptab];
1134 if ((v->mv_mode == MV_PMODE_INTENSITY_COMP &&
1135 v->mv_mode2 == MV_PMODE_MIXED_MV) || v->mv_mode == MV_PMODE_MIXED_MV) {
1136 fourmvbptab = get_bits(gb, 2);
1137 v->fourmvbp_vlc = &ff_vc1_4mv_block_pattern_vlc[fourmvbptab];
1138 v->mbmode_vlc = &ff_vc1_if_mmv_mbmode_vlc[mbmodetab];
1140 v->mbmode_vlc = &ff_vc1_if_1mv_mbmode_vlc[mbmodetab];
1144 av_log(v->s.avctx, AV_LOG_DEBUG, "VOP DQuant info\n");
1145 vop_dquant_decoding(v);
1148 v->ttfrm = 0; //FIXME Is that so ?
1149 if (v->vstransform) {
1150 v->ttmbf = get_bits1(gb);
1152 v->ttfrm = ff_vc1_ttfrm_to_tt[get_bits(gb, 2)];
1159 case AV_PICTURE_TYPE_B:
1160 if (v->fcm == ILACE_FRAME) {
1161 v->bfraction_lut_index = get_vlc2(gb, ff_vc1_bfraction_vlc.table, VC1_BFRACTION_VLC_BITS, 1);
1162 v->bfraction = ff_vc1_bfraction_lut[v->bfraction_lut_index];
1163 if (v->bfraction == 0) {
1168 v->mvrange = get_unary(gb, 0, 3);
1171 v->k_x = v->mvrange + 9 + (v->mvrange >> 1); //k_x can be 9 10 12 13
1172 v->k_y = v->mvrange + 8; //k_y can be 8 9 10 11
1173 v->range_x = 1 << (v->k_x - 1);
1174 v->range_y = 1 << (v->k_y - 1);
1178 else if (v->pq < 13)
1183 if (v->field_mode) {
1185 av_log(v->s.avctx, AV_LOG_DEBUG, "B Fields\n");
1186 if (v->extended_dmv)
1187 v->dmvrange = get_unary(gb, 0, 3);
1188 mvmode = get_unary(gb, 1, 3);
1189 lowquant = (v->pq > 12) ? 0 : 1;
1190 v->mv_mode = ff_vc1_mv_pmode_table2[lowquant][mvmode];
1191 v->qs_last = v->s.quarter_sample;
1192 v->s.quarter_sample = (v->mv_mode == MV_PMODE_1MV || v->mv_mode == MV_PMODE_MIXED_MV);
1193 v->s.mspel = !(v->mv_mode == MV_PMODE_1MV_HPEL_BILIN || v->mv_mode == MV_PMODE_1MV_HPEL);
1194 status = bitplane_decoding(v->forward_mb_plane, &v->fmb_is_raw, v);
1197 av_log(v->s.avctx, AV_LOG_DEBUG, "MB Forward Type plane encoding: "
1198 "Imode: %i, Invert: %i\n", status>>1, status&1);
1199 mbmodetab = get_bits(gb, 3);
1200 if (v->mv_mode == MV_PMODE_MIXED_MV)
1201 v->mbmode_vlc = &ff_vc1_if_mmv_mbmode_vlc[mbmodetab];
1203 v->mbmode_vlc = &ff_vc1_if_1mv_mbmode_vlc[mbmodetab];
1204 imvtab = get_bits(gb, 3);
1205 v->imv_vlc = &ff_vc1_2ref_mvdata_vlc[imvtab];
1206 icbptab = get_bits(gb, 3);
1207 v->cbpcy_vlc = &ff_vc1_icbpcy_vlc[icbptab];
1208 if (v->mv_mode == MV_PMODE_MIXED_MV) {
1209 fourmvbptab = get_bits(gb, 2);
1210 v->fourmvbp_vlc = &ff_vc1_4mv_block_pattern_vlc[fourmvbptab];
1212 v->numref = 1; // interlaced field B pictures are always 2-ref
1213 } else if (v->fcm == ILACE_FRAME) {
1214 if (v->extended_dmv)
1215 v->dmvrange = get_unary(gb, 0, 3);
1216 get_bits1(gb); /* intcomp - present but shall always be 0 */
1218 v->mv_mode = MV_PMODE_1MV;
1219 v->fourmvswitch = 0;
1220 v->qs_last = v->s.quarter_sample;
1221 v->s.quarter_sample = 1;
1223 status = bitplane_decoding(v->direct_mb_plane, &v->dmb_is_raw, v);
1226 av_log(v->s.avctx, AV_LOG_DEBUG, "MB Direct Type plane encoding: "
1227 "Imode: %i, Invert: %i\n", status>>1, status&1);
1228 status = bitplane_decoding(v->s.mbskip_table, &v->skip_is_raw, v);
1231 av_log(v->s.avctx, AV_LOG_DEBUG, "MB Skip plane encoding: "
1232 "Imode: %i, Invert: %i\n", status>>1, status&1);
1233 mbmodetab = get_bits(gb, 2);
1234 v->mbmode_vlc = &ff_vc1_intfr_non4mv_mbmode_vlc[mbmodetab];
1235 imvtab = get_bits(gb, 2);
1236 v->imv_vlc = &ff_vc1_1ref_mvdata_vlc[imvtab];
1237 // interlaced p/b-picture cbpcy range is [1, 63]
1238 icbptab = get_bits(gb, 3);
1239 v->cbpcy_vlc = &ff_vc1_icbpcy_vlc[icbptab];
1240 twomvbptab = get_bits(gb, 2);
1241 v->twomvbp_vlc = &ff_vc1_2mv_block_pattern_vlc[twomvbptab];
1242 fourmvbptab = get_bits(gb, 2);
1243 v->fourmvbp_vlc = &ff_vc1_4mv_block_pattern_vlc[fourmvbptab];
1245 v->mv_mode = get_bits1(gb) ? MV_PMODE_1MV : MV_PMODE_1MV_HPEL_BILIN;
1246 v->qs_last = v->s.quarter_sample;
1247 v->s.quarter_sample = (v->mv_mode == MV_PMODE_1MV);
1248 v->s.mspel = v->s.quarter_sample;
1249 status = bitplane_decoding(v->direct_mb_plane, &v->dmb_is_raw, v);
1252 av_log(v->s.avctx, AV_LOG_DEBUG, "MB Direct Type plane encoding: "
1253 "Imode: %i, Invert: %i\n", status>>1, status&1);
1254 status = bitplane_decoding(v->s.mbskip_table, &v->skip_is_raw, v);
1257 av_log(v->s.avctx, AV_LOG_DEBUG, "MB Skip plane encoding: "
1258 "Imode: %i, Invert: %i\n", status>>1, status&1);
1259 v->s.mv_table_index = get_bits(gb, 2);
1260 v->cbpcy_vlc = &ff_vc1_cbpcy_p_vlc[get_bits(gb, 2)];
1264 av_log(v->s.avctx, AV_LOG_DEBUG, "VOP DQuant info\n");
1265 vop_dquant_decoding(v);
1269 if (v->vstransform) {
1270 v->ttmbf = get_bits1(gb);
1272 v->ttfrm = ff_vc1_ttfrm_to_tt[get_bits(gb, 2)];
1281 if (v->fcm != PROGRESSIVE && !v->s.quarter_sample) {
1287 v->c_ac_table_index = decode012(gb);
1288 if (v->s.pict_type == AV_PICTURE_TYPE_I || v->s.pict_type == AV_PICTURE_TYPE_BI) {
1289 v->y_ac_table_index = decode012(gb);
1292 v->s.dc_table_index = get_bits1(gb);
1293 if ((v->s.pict_type == AV_PICTURE_TYPE_I || v->s.pict_type == AV_PICTURE_TYPE_BI)
1295 av_log(v->s.avctx, AV_LOG_DEBUG, "VOP DQuant info\n");
1296 vop_dquant_decoding(v);
1300 if (v->s.pict_type == AV_PICTURE_TYPE_BI) {
1301 v->s.pict_type = AV_PICTURE_TYPE_B;
1307 static const uint32_t vc1_ac_tables[AC_MODES][186][2] = {
1309 { 0x0001, 2}, { 0x0005, 3}, { 0x000D, 4}, { 0x0012, 5}, { 0x000E, 6}, { 0x0015, 7},
1310 { 0x0013, 8}, { 0x003F, 8}, { 0x004B, 9}, { 0x011F, 9}, { 0x00B8, 10}, { 0x03E3, 10},
1311 { 0x0172, 11}, { 0x024D, 12}, { 0x03DA, 12}, { 0x02DD, 13}, { 0x1F55, 13}, { 0x05B9, 14},
1312 { 0x3EAE, 14}, { 0x0000, 4}, { 0x0010, 5}, { 0x0008, 7}, { 0x0020, 8}, { 0x0029, 9},
1313 { 0x01F4, 9}, { 0x0233, 10}, { 0x01E0, 11}, { 0x012A, 12}, { 0x03DD, 12}, { 0x050A, 13},
1314 { 0x1F29, 13}, { 0x0A42, 14}, { 0x1272, 15}, { 0x1737, 15}, { 0x0003, 5}, { 0x0011, 7},
1315 { 0x00C4, 8}, { 0x004B, 10}, { 0x00B4, 11}, { 0x07D4, 11}, { 0x0345, 12}, { 0x02D7, 13},
1316 { 0x07BF, 13}, { 0x0938, 14}, { 0x0BBB, 14}, { 0x095E, 15}, { 0x0013, 5}, { 0x0078, 7},
1317 { 0x0069, 9}, { 0x0232, 10}, { 0x0461, 11}, { 0x03EC, 12}, { 0x0520, 13}, { 0x1F2A, 13},
1318 { 0x3E50, 14}, { 0x3E51, 14}, { 0x1486, 15}, { 0x000C, 6}, { 0x0024, 9}, { 0x0094, 11},
1319 { 0x08C0, 12}, { 0x0F09, 14}, { 0x1EF0, 15}, { 0x003D, 6}, { 0x0053, 9}, { 0x01A0, 11},
1320 { 0x02D6, 13}, { 0x0F08, 14}, { 0x0013, 7}, { 0x007C, 9}, { 0x07C1, 11}, { 0x04AC, 14},
1321 { 0x001B, 7}, { 0x00A0, 10}, { 0x0344, 12}, { 0x0F79, 14}, { 0x0079, 7}, { 0x03E1, 10},
1322 { 0x02D4, 13}, { 0x2306, 14}, { 0x0021, 8}, { 0x023C, 10}, { 0x0FAE, 12}, { 0x23DE, 14},
1323 { 0x0035, 8}, { 0x0175, 11}, { 0x07B3, 13}, { 0x00C5, 8}, { 0x0174, 11}, { 0x0785, 13},
1324 { 0x0048, 9}, { 0x01A3, 11}, { 0x049E, 13}, { 0x002C, 9}, { 0x00FA, 10}, { 0x07D6, 11},
1325 { 0x0092, 10}, { 0x05CC, 13}, { 0x1EF1, 15}, { 0x00A3, 10}, { 0x03ED, 12}, { 0x093E, 14},
1326 { 0x01E2, 11}, { 0x1273, 15}, { 0x07C4, 11}, { 0x1487, 15}, { 0x0291, 12}, { 0x0293, 12},
1327 { 0x0F8A, 12}, { 0x0509, 13}, { 0x0508, 13}, { 0x078D, 13}, { 0x07BE, 13}, { 0x078C, 13},
1328 { 0x04AE, 14}, { 0x0BBA, 14}, { 0x2307, 14}, { 0x0B9A, 14}, { 0x1736, 15}, { 0x000E, 4},
1329 { 0x0045, 7}, { 0x01F3, 9}, { 0x047A, 11}, { 0x05DC, 13}, { 0x23DF, 14}, { 0x0019, 5},
1330 { 0x0028, 9}, { 0x0176, 11}, { 0x049D, 13}, { 0x23DD, 14}, { 0x0030, 6}, { 0x00A2, 10},
1331 { 0x02EF, 12}, { 0x05B8, 14}, { 0x003F, 6}, { 0x00A5, 10}, { 0x03DB, 12}, { 0x093F, 14},
1332 { 0x0044, 7}, { 0x07CB, 11}, { 0x095F, 15}, { 0x0063, 7}, { 0x03C3, 12}, { 0x0015, 8},
1333 { 0x08F6, 12}, { 0x0017, 8}, { 0x0498, 13}, { 0x002C, 8}, { 0x07B2, 13}, { 0x002F, 8},
1334 { 0x1F54, 13}, { 0x008D, 8}, { 0x07BD, 13}, { 0x008E, 8}, { 0x1182, 13}, { 0x00FB, 8},
1335 { 0x050B, 13}, { 0x002D, 8}, { 0x07C0, 11}, { 0x0079, 9}, { 0x1F5F, 13}, { 0x007A, 9},
1336 { 0x1F56, 13}, { 0x0231, 10}, { 0x03E4, 10}, { 0x01A1, 11}, { 0x0143, 11}, { 0x01F7, 11},
1337 { 0x016F, 12}, { 0x0292, 12}, { 0x02E7, 12}, { 0x016C, 12}, { 0x016D, 12}, { 0x03DC, 12},
1338 { 0x0F8B, 12}, { 0x0499, 13}, { 0x03D8, 12}, { 0x078E, 13}, { 0x02D5, 13}, { 0x1F5E, 13},
1339 { 0x1F2B, 13}, { 0x078F, 13}, { 0x04AD, 14}, { 0x3EAF, 14}, { 0x23DC, 14}, { 0x004A, 9}
1342 { 0x0000, 3}, { 0x0003, 4}, { 0x000B, 5}, { 0x0014, 6}, { 0x003F, 6}, { 0x005D, 7},
1343 { 0x00A2, 8}, { 0x00AC, 9}, { 0x016E, 9}, { 0x020A, 10}, { 0x02E2, 10}, { 0x0432, 11},
1344 { 0x05C9, 11}, { 0x0827, 12}, { 0x0B54, 12}, { 0x04E6, 13}, { 0x105F, 13}, { 0x172A, 13},
1345 { 0x20B2, 14}, { 0x2D4E, 14}, { 0x39F0, 14}, { 0x4175, 15}, { 0x5A9E, 15}, { 0x0004, 4},
1346 { 0x001E, 5}, { 0x0042, 7}, { 0x00B6, 8}, { 0x0173, 9}, { 0x0395, 10}, { 0x072E, 11},
1347 { 0x0B94, 12}, { 0x16A4, 13}, { 0x20B3, 14}, { 0x2E45, 14}, { 0x0005, 5}, { 0x0040, 7},
1348 { 0x0049, 9}, { 0x028F, 10}, { 0x05CB, 11}, { 0x048A, 13}, { 0x09DD, 14}, { 0x73E2, 15},
1349 { 0x0018, 5}, { 0x0025, 8}, { 0x008A, 10}, { 0x051B, 11}, { 0x0E5F, 12}, { 0x09C9, 14},
1350 { 0x139C, 15}, { 0x0029, 6}, { 0x004F, 9}, { 0x0412, 11}, { 0x048D, 13}, { 0x2E41, 14},
1351 { 0x0038, 6}, { 0x010E, 9}, { 0x05A8, 11}, { 0x105C, 13}, { 0x39F2, 14}, { 0x0058, 7},
1352 { 0x021F, 10}, { 0x0E7E, 12}, { 0x39FF, 14}, { 0x0023, 8}, { 0x02E3, 10}, { 0x04E5, 13},
1353 { 0x2E40, 14}, { 0x00A1, 8}, { 0x05BE, 11}, { 0x09C8, 14}, { 0x0083, 8}, { 0x013A, 11},
1354 { 0x1721, 13}, { 0x0044, 9}, { 0x0276, 12}, { 0x39F6, 14}, { 0x008B, 10}, { 0x04EF, 13},
1355 { 0x5A9B, 15}, { 0x0208, 10}, { 0x1CFE, 13}, { 0x0399, 10}, { 0x1CB4, 13}, { 0x039E, 10},
1356 { 0x39F3, 14}, { 0x05AB, 11}, { 0x73E3, 15}, { 0x0737, 11}, { 0x5A9F, 15}, { 0x082D, 12},
1357 { 0x0E69, 12}, { 0x0E68, 12}, { 0x0433, 11}, { 0x0B7B, 12}, { 0x2DF8, 14}, { 0x2E56, 14},
1358 { 0x2E57, 14}, { 0x39F7, 14}, { 0x51A5, 15}, { 0x0003, 3}, { 0x002A, 6}, { 0x00E4, 8},
1359 { 0x028E, 10}, { 0x0735, 11}, { 0x1058, 13}, { 0x1CFA, 13}, { 0x2DF9, 14}, { 0x4174, 15},
1360 { 0x0009, 4}, { 0x0054, 8}, { 0x0398, 10}, { 0x048B, 13}, { 0x139D, 15}, { 0x000D, 4},
1361 { 0x00AD, 9}, { 0x0826, 12}, { 0x2D4C, 14}, { 0x0011, 5}, { 0x016B, 9}, { 0x0B7F, 12},
1362 { 0x51A4, 15}, { 0x0019, 5}, { 0x021B, 10}, { 0x16FD, 13}, { 0x001D, 5}, { 0x0394, 10},
1363 { 0x28D3, 14}, { 0x002B, 6}, { 0x05BC, 11}, { 0x5A9A, 15}, { 0x002F, 6}, { 0x0247, 12},
1364 { 0x0010, 7}, { 0x0A35, 12}, { 0x003E, 6}, { 0x0B7A, 12}, { 0x0059, 7}, { 0x105E, 13},
1365 { 0x0026, 8}, { 0x09CF, 14}, { 0x0055, 8}, { 0x1CB5, 13}, { 0x0057, 8}, { 0x0E5B, 12},
1366 { 0x00A0, 8}, { 0x1468, 13}, { 0x0170, 9}, { 0x0090, 10}, { 0x01CE, 9}, { 0x021A, 10},
1367 { 0x0218, 10}, { 0x0168, 9}, { 0x021E, 10}, { 0x0244, 12}, { 0x0736, 11}, { 0x0138, 11},
1368 { 0x0519, 11}, { 0x0E5E, 12}, { 0x072C, 11}, { 0x0B55, 12}, { 0x09DC, 14}, { 0x20BB, 14},
1369 { 0x048C, 13}, { 0x1723, 13}, { 0x2E44, 14}, { 0x16A5, 13}, { 0x0518, 11}, { 0x39FE, 14},
1373 { 0x0001, 2}, { 0x0006, 3}, { 0x000F, 4}, { 0x0016, 5}, { 0x0020, 6}, { 0x0018, 7},
1374 { 0x0008, 8}, { 0x009A, 8}, { 0x0056, 9}, { 0x013E, 9}, { 0x00F0, 10}, { 0x03A5, 10},
1375 { 0x0077, 11}, { 0x01EF, 11}, { 0x009A, 12}, { 0x005D, 13}, { 0x0001, 4}, { 0x0011, 5},
1376 { 0x0002, 7}, { 0x000B, 8}, { 0x0012, 9}, { 0x01D6, 9}, { 0x027E, 10}, { 0x0191, 11},
1377 { 0x00EA, 12}, { 0x03DC, 12}, { 0x013B, 13}, { 0x0004, 5}, { 0x0014, 7}, { 0x009E, 8},
1378 { 0x0009, 10}, { 0x01AC, 11}, { 0x01E2, 11}, { 0x03CA, 12}, { 0x005F, 13}, { 0x0017, 5},
1379 { 0x004E, 7}, { 0x005E, 9}, { 0x00F3, 10}, { 0x01AD, 11}, { 0x00EC, 12}, { 0x05F0, 13},
1380 { 0x000E, 6}, { 0x00E1, 8}, { 0x03A4, 10}, { 0x009C, 12}, { 0x013D, 13}, { 0x003B, 6},
1381 { 0x001C, 9}, { 0x0014, 11}, { 0x09BE, 12}, { 0x0006, 7}, { 0x007A, 9}, { 0x0190, 11},
1382 { 0x0137, 13}, { 0x001B, 7}, { 0x0008, 10}, { 0x075C, 11}, { 0x0071, 7}, { 0x00D7, 10},
1383 { 0x09BF, 12}, { 0x0007, 8}, { 0x00AF, 10}, { 0x04CC, 11}, { 0x0034, 8}, { 0x0265, 10},
1384 { 0x009F, 12}, { 0x00E0, 8}, { 0x0016, 11}, { 0x0327, 12}, { 0x0015, 9}, { 0x017D, 11},
1385 { 0x0EBB, 12}, { 0x0014, 9}, { 0x00F6, 10}, { 0x01E4, 11}, { 0x00CB, 10}, { 0x099D, 12},
1386 { 0x00CA, 10}, { 0x02FC, 12}, { 0x017F, 11}, { 0x04CD, 11}, { 0x02FD, 12}, { 0x04FE, 11},
1387 { 0x013A, 13}, { 0x000A, 4}, { 0x0042, 7}, { 0x01D3, 9}, { 0x04DD, 11}, { 0x0012, 5},
1388 { 0x00E8, 8}, { 0x004C, 11}, { 0x0136, 13}, { 0x0039, 6}, { 0x0264, 10}, { 0x0EBA, 12},
1389 { 0x0000, 7}, { 0x00AE, 10}, { 0x099C, 12}, { 0x001F, 7}, { 0x04DE, 11}, { 0x0043, 7},
1390 { 0x04DC, 11}, { 0x0003, 8}, { 0x03CB, 12}, { 0x0006, 8}, { 0x099E, 12}, { 0x002A, 8},
1391 { 0x05F1, 13}, { 0x000F, 8}, { 0x09FE, 12}, { 0x0033, 8}, { 0x09FF, 12}, { 0x0098, 8},
1392 { 0x099F, 12}, { 0x00EA, 8}, { 0x013C, 13}, { 0x002E, 8}, { 0x0192, 11}, { 0x0136, 9},
1393 { 0x006A, 9}, { 0x0015, 11}, { 0x03AF, 10}, { 0x01E3, 11}, { 0x0074, 11}, { 0x00EB, 12},
1394 { 0x02F9, 12}, { 0x005C, 13}, { 0x00ED, 12}, { 0x03DD, 12}, { 0x0326, 12}, { 0x005E, 13},
1398 { 0x0004, 3}, { 0x0014, 5}, { 0x0017, 7}, { 0x007F, 8}, { 0x0154, 9}, { 0x01F2, 10},
1399 { 0x00BF, 11}, { 0x0065, 12}, { 0x0AAA, 12}, { 0x0630, 13}, { 0x1597, 13}, { 0x03B7, 14},
1400 { 0x2B22, 14}, { 0x0BE6, 15}, { 0x000B, 4}, { 0x0037, 7}, { 0x0062, 9}, { 0x0007, 11},
1401 { 0x0166, 12}, { 0x00CE, 13}, { 0x1590, 13}, { 0x05F6, 14}, { 0x0BE7, 15}, { 0x0007, 5},
1402 { 0x006D, 8}, { 0x0003, 11}, { 0x031F, 12}, { 0x05F2, 14}, { 0x0002, 6}, { 0x0061, 9},
1403 { 0x0055, 12}, { 0x01DF, 14}, { 0x001A, 6}, { 0x001E, 10}, { 0x0AC9, 12}, { 0x2B23, 14},
1404 { 0x001E, 6}, { 0x001F, 10}, { 0x0AC3, 12}, { 0x2B2B, 14}, { 0x0006, 7}, { 0x0004, 11},
1405 { 0x02F8, 13}, { 0x0019, 7}, { 0x0006, 11}, { 0x063D, 13}, { 0x0057, 7}, { 0x0182, 11},
1406 { 0x2AA2, 14}, { 0x0004, 8}, { 0x0180, 11}, { 0x059C, 14}, { 0x007D, 8}, { 0x0164, 12},
1407 { 0x076D, 15}, { 0x0002, 9}, { 0x018D, 11}, { 0x1581, 13}, { 0x00AD, 8}, { 0x0060, 12},
1408 { 0x0C67, 14}, { 0x001C, 9}, { 0x00EE, 13}, { 0x0003, 9}, { 0x02CF, 13}, { 0x00D9, 9},
1409 { 0x1580, 13}, { 0x0002, 11}, { 0x0183, 11}, { 0x0057, 12}, { 0x0061, 12}, { 0x0031, 11},
1410 { 0x0066, 12}, { 0x0631, 13}, { 0x0632, 13}, { 0x00AC, 13}, { 0x031D, 12}, { 0x0076, 12},
1411 { 0x003A, 11}, { 0x0165, 12}, { 0x0C66, 14}, { 0x0003, 2}, { 0x0054, 7}, { 0x02AB, 10},
1412 { 0x0016, 13}, { 0x05F7, 14}, { 0x0005, 4}, { 0x00F8, 9}, { 0x0AA9, 12}, { 0x005F, 15},
1413 { 0x0004, 4}, { 0x001C, 10}, { 0x1550, 13}, { 0x0004, 5}, { 0x0077, 11}, { 0x076C, 15},
1414 { 0x000E, 5}, { 0x000A, 12}, { 0x000C, 5}, { 0x0562, 11}, { 0x0004, 6}, { 0x031C, 12},
1415 { 0x0006, 6}, { 0x00C8, 13}, { 0x000D, 6}, { 0x01DA, 13}, { 0x0007, 6}, { 0x00C9, 13},
1416 { 0x0001, 7}, { 0x002E, 14}, { 0x0014, 7}, { 0x1596, 13}, { 0x000A, 7}, { 0x0AC2, 12},
1417 { 0x0016, 7}, { 0x015B, 14}, { 0x0015, 7}, { 0x015A, 14}, { 0x000F, 8}, { 0x005E, 15},
1418 { 0x007E, 8}, { 0x00AB, 8}, { 0x002D, 9}, { 0x00D8, 9}, { 0x000B, 9}, { 0x0014, 10},
1419 { 0x02B3, 10}, { 0x01F3, 10}, { 0x003A, 10}, { 0x0000, 10}, { 0x0058, 10}, { 0x002E, 9},
1420 { 0x005E, 10}, { 0x0563, 11}, { 0x00EC, 12}, { 0x0054, 12}, { 0x0AC1, 12}, { 0x1556, 13},
1421 { 0x02FA, 13}, { 0x0181, 11}, { 0x1557, 13}, { 0x059D, 14}, { 0x2AA3, 14}, { 0x2B2A, 14},
1422 { 0x01DE, 14}, { 0x063C, 13}, { 0x00CF, 13}, { 0x1594, 13}, { 0x000D, 9}
1425 { 0x0002, 2}, { 0x0006, 3}, { 0x000F, 4}, { 0x000D, 5}, { 0x000C, 5}, { 0x0015, 6},
1426 { 0x0013, 6}, { 0x0012, 6}, { 0x0017, 7}, { 0x001F, 8}, { 0x001E, 8}, { 0x001D, 8},
1427 { 0x0025, 9}, { 0x0024, 9}, { 0x0023, 9}, { 0x0021, 9}, { 0x0021, 10}, { 0x0020, 10},
1428 { 0x000F, 10}, { 0x000E, 10}, { 0x0007, 11}, { 0x0006, 11}, { 0x0020, 11}, { 0x0021, 11},
1429 { 0x0050, 12}, { 0x0051, 12}, { 0x0052, 12}, { 0x000E, 4}, { 0x0014, 6}, { 0x0016, 7},
1430 { 0x001C, 8}, { 0x0020, 9}, { 0x001F, 9}, { 0x000D, 10}, { 0x0022, 11}, { 0x0053, 12},
1431 { 0x0055, 12}, { 0x000B, 5}, { 0x0015, 7}, { 0x001E, 9}, { 0x000C, 10}, { 0x0056, 12},
1432 { 0x0011, 6}, { 0x001B, 8}, { 0x001D, 9}, { 0x000B, 10}, { 0x0010, 6}, { 0x0022, 9},
1433 { 0x000A, 10}, { 0x000D, 6}, { 0x001C, 9}, { 0x0008, 10}, { 0x0012, 7}, { 0x001B, 9},
1434 { 0x0054, 12}, { 0x0014, 7}, { 0x001A, 9}, { 0x0057, 12}, { 0x0019, 8}, { 0x0009, 10},
1435 { 0x0018, 8}, { 0x0023, 11}, { 0x0017, 8}, { 0x0019, 9}, { 0x0018, 9}, { 0x0007, 10},
1436 { 0x0058, 12}, { 0x0007, 4}, { 0x000C, 6}, { 0x0016, 8}, { 0x0017, 9}, { 0x0006, 10},
1437 { 0x0005, 11}, { 0x0004, 11}, { 0x0059, 12}, { 0x000F, 6}, { 0x0016, 9}, { 0x0005, 10},
1438 { 0x000E, 6}, { 0x0004, 10}, { 0x0011, 7}, { 0x0024, 11}, { 0x0010, 7}, { 0x0025, 11},
1439 { 0x0013, 7}, { 0x005A, 12}, { 0x0015, 8}, { 0x005B, 12}, { 0x0014, 8}, { 0x0013, 8},
1440 { 0x001A, 8}, { 0x0015, 9}, { 0x0014, 9}, { 0x0013, 9}, { 0x0012, 9}, { 0x0011, 9},
1441 { 0x0026, 11}, { 0x0027, 11}, { 0x005C, 12}, { 0x005D, 12}, { 0x005E, 12}, { 0x005F, 12},
1445 { 0x0002, 2}, { 0x000F, 4}, { 0x0015, 6}, { 0x0017, 7}, { 0x001F, 8}, { 0x0025, 9},
1446 { 0x0024, 9}, { 0x0021, 10}, { 0x0020, 10}, { 0x0007, 11}, { 0x0006, 11}, { 0x0020, 11},
1447 { 0x0006, 3}, { 0x0014, 6}, { 0x001E, 8}, { 0x000F, 10}, { 0x0021, 11}, { 0x0050, 12},
1448 { 0x000E, 4}, { 0x001D, 8}, { 0x000E, 10}, { 0x0051, 12}, { 0x000D, 5}, { 0x0023, 9},
1449 { 0x000D, 10}, { 0x000C, 5}, { 0x0022, 9}, { 0x0052, 12}, { 0x000B, 5}, { 0x000C, 10},
1450 { 0x0053, 12}, { 0x0013, 6}, { 0x000B, 10}, { 0x0054, 12}, { 0x0012, 6}, { 0x000A, 10},
1451 { 0x0011, 6}, { 0x0009, 10}, { 0x0010, 6}, { 0x0008, 10}, { 0x0016, 7}, { 0x0055, 12},
1452 { 0x0015, 7}, { 0x0014, 7}, { 0x001C, 8}, { 0x001B, 8}, { 0x0021, 9}, { 0x0020, 9},
1453 { 0x001F, 9}, { 0x001E, 9}, { 0x001D, 9}, { 0x001C, 9}, { 0x001B, 9}, { 0x001A, 9},
1454 { 0x0022, 11}, { 0x0023, 11}, { 0x0056, 12}, { 0x0057, 12}, { 0x0007, 4}, { 0x0019, 9},
1455 { 0x0005, 11}, { 0x000F, 6}, { 0x0004, 11}, { 0x000E, 6}, { 0x000D, 6}, { 0x000C, 6},
1456 { 0x0013, 7}, { 0x0012, 7}, { 0x0011, 7}, { 0x0010, 7}, { 0x001A, 8}, { 0x0019, 8},
1457 { 0x0018, 8}, { 0x0017, 8}, { 0x0016, 8}, { 0x0015, 8}, { 0x0014, 8}, { 0x0013, 8},
1458 { 0x0018, 9}, { 0x0017, 9}, { 0x0016, 9}, { 0x0015, 9}, { 0x0014, 9}, { 0x0013, 9},
1459 { 0x0012, 9}, { 0x0011, 9}, { 0x0007, 10}, { 0x0006, 10}, { 0x0005, 10}, { 0x0004, 10},
1460 { 0x0024, 11}, { 0x0025, 11}, { 0x0026, 11}, { 0x0027, 11}, { 0x0058, 12}, { 0x0059, 12},
1461 { 0x005A, 12}, { 0x005B, 12}, { 0x005C, 12}, { 0x005D, 12}, { 0x005E, 12}, { 0x005F, 12},
1465 { 0x0000, 2}, { 0x0003, 3}, { 0x000D, 4}, { 0x0005, 4}, { 0x001C, 5}, { 0x0016, 5},
1466 { 0x003F, 6}, { 0x003A, 6}, { 0x002E, 6}, { 0x0022, 6}, { 0x007B, 7}, { 0x0067, 7},
1467 { 0x005F, 7}, { 0x0047, 7}, { 0x0026, 7}, { 0x00EF, 8}, { 0x00CD, 8}, { 0x00C1, 8},
1468 { 0x00A9, 8}, { 0x004F, 8}, { 0x01F2, 9}, { 0x01DD, 9}, { 0x0199, 9}, { 0x0185, 9},
1469 { 0x015D, 9}, { 0x011B, 9}, { 0x03EF, 10}, { 0x03E1, 10}, { 0x03C8, 10}, { 0x0331, 10},
1470 { 0x0303, 10}, { 0x02F1, 10}, { 0x02A0, 10}, { 0x0233, 10}, { 0x0126, 10}, { 0x07C0, 11},
1471 { 0x076F, 11}, { 0x076C, 11}, { 0x0661, 11}, { 0x0604, 11}, { 0x0572, 11}, { 0x0551, 11},
1472 { 0x046A, 11}, { 0x0274, 11}, { 0x0F27, 12}, { 0x0F24, 12}, { 0x0EDB, 12}, { 0x0C8E, 12},
1473 { 0x0C0B, 12}, { 0x0C0A, 12}, { 0x0AE3, 12}, { 0x08D6, 12}, { 0x0490, 12}, { 0x0495, 12},
1474 { 0x1F19, 13}, { 0x1DB5, 13}, { 0x0009, 4}, { 0x0010, 5}, { 0x0029, 6}, { 0x0062, 7},
1475 { 0x00F3, 8}, { 0x00AD, 8}, { 0x01E5, 9}, { 0x0179, 9}, { 0x009C, 9}, { 0x03B1, 10},
1476 { 0x02AE, 10}, { 0x0127, 10}, { 0x076E, 11}, { 0x0570, 11}, { 0x0275, 11}, { 0x0F25, 12},
1477 { 0x0EC0, 12}, { 0x0AA0, 12}, { 0x08D7, 12}, { 0x1E4C, 13}, { 0x0008, 5}, { 0x0063, 7},
1478 { 0x00AF, 8}, { 0x017B, 9}, { 0x03B3, 10}, { 0x07DD, 11}, { 0x0640, 11}, { 0x0F8D, 12},
1479 { 0x0BC1, 12}, { 0x0491, 12}, { 0x0028, 6}, { 0x00C3, 8}, { 0x0151, 9}, { 0x02A1, 10},
1480 { 0x0573, 11}, { 0x0EC3, 12}, { 0x1F35, 13}, { 0x0065, 7}, { 0x01DA, 9}, { 0x02AF, 10},
1481 { 0x0277, 11}, { 0x08C9, 12}, { 0x1781, 13}, { 0x0025, 7}, { 0x0118, 9}, { 0x0646, 11},
1482 { 0x0AA6, 12}, { 0x1780, 13}, { 0x00C9, 8}, { 0x0321, 10}, { 0x0F9B, 12}, { 0x191E, 13},
1483 { 0x0048, 8}, { 0x07CC, 11}, { 0x0AA1, 12}, { 0x0180, 9}, { 0x0465, 11}, { 0x1905, 13},
1484 { 0x03E2, 10}, { 0x0EC1, 12}, { 0x3C9B, 14}, { 0x02F4, 10}, { 0x08C8, 12}, { 0x07C1, 11},
1485 { 0x0928, 13}, { 0x05E1, 11}, { 0x320D, 14}, { 0x0EC2, 12}, { 0x6418, 15}, { 0x1F34, 13},
1486 { 0x0078, 7}, { 0x0155, 9}, { 0x0552, 11}, { 0x191F, 13}, { 0x00FA, 8}, { 0x07DC, 11},
1487 { 0x1907, 13}, { 0x00AC, 8}, { 0x0249, 11}, { 0x13B1, 14}, { 0x01F6, 9}, { 0x0AE2, 12},
1488 { 0x01DC, 9}, { 0x04ED, 12}, { 0x0184, 9}, { 0x1904, 13}, { 0x0156, 9}, { 0x09D9, 13},
1489 { 0x03E7, 10}, { 0x0929, 13}, { 0x03B2, 10}, { 0x3B68, 14}, { 0x02F5, 10}, { 0x13B0, 14},
1490 { 0x0322, 10}, { 0x3B69, 14}, { 0x0234, 10}, { 0x7935, 15}, { 0x07C7, 11}, { 0xC833, 16},
1491 { 0x0660, 11}, { 0x7934, 15}, { 0x024B, 11}, { 0xC832, 16}, { 0x0AA7, 12}, { 0x1F18, 13},
1495 { 0x0002, 2}, { 0x0000, 3}, { 0x001E, 5}, { 0x0004, 5}, { 0x0012, 6}, { 0x0070, 7},
1496 { 0x001A, 7}, { 0x005F, 8}, { 0x0047, 8}, { 0x01D3, 9}, { 0x00B5, 9}, { 0x0057, 9},
1497 { 0x03B5, 10}, { 0x016D, 10}, { 0x0162, 10}, { 0x07CE, 11}, { 0x0719, 11}, { 0x0691, 11},
1498 { 0x02C6, 11}, { 0x0156, 11}, { 0x0F92, 12}, { 0x0D2E, 12}, { 0x0D20, 12}, { 0x059E, 12},
1499 { 0x0468, 12}, { 0x02A6, 12}, { 0x1DA2, 13}, { 0x1C60, 13}, { 0x1A43, 13}, { 0x0B1D, 13},
1500 { 0x08C0, 13}, { 0x055D, 13}, { 0x0003, 3}, { 0x000A, 5}, { 0x0077, 7}, { 0x00E5, 8},
1501 { 0x01D9, 9}, { 0x03E5, 10}, { 0x0166, 10}, { 0x0694, 11}, { 0x0152, 11}, { 0x059F, 12},
1502 { 0x1F3C, 13}, { 0x1A4B, 13}, { 0x055E, 13}, { 0x000C, 4}, { 0x007D, 7}, { 0x0044, 8},
1503 { 0x03E0, 10}, { 0x0769, 11}, { 0x0E31, 12}, { 0x1F26, 13}, { 0x055C, 13}, { 0x001B, 5},
1504 { 0x00E2, 8}, { 0x03A5, 10}, { 0x02C9, 11}, { 0x1F23, 13}, { 0x3B47, 14}, { 0x0007, 5},
1505 { 0x01D8, 9}, { 0x02D8, 11}, { 0x1F27, 13}, { 0x3494, 14}, { 0x0035, 6}, { 0x03E1, 10},
1506 { 0x059C, 12}, { 0x38C3, 14}, { 0x000C, 6}, { 0x0165, 10}, { 0x1D23, 13}, { 0x1638, 14},
1507 { 0x0068, 7}, { 0x0693, 11}, { 0x3A45, 14}, { 0x0020, 7}, { 0x0F90, 12}, { 0x7CF6, 15},
1508 { 0x00E8, 8}, { 0x058F, 12}, { 0x2CEF, 15}, { 0x0045, 8}, { 0x0B3A, 13}, { 0x01F1, 9},
1509 { 0x3B46, 14}, { 0x01A7, 9}, { 0x1676, 14}, { 0x0056, 9}, { 0x692A, 15}, { 0x038D, 10},
1510 { 0xE309, 16}, { 0x00AA, 10}, { 0x1C611, 17}, { 0x02DF, 11}, { 0xB3B9, 17}, { 0x02C8, 11},
1511 { 0x38C20, 18}, { 0x01B0, 11}, { 0x16390, 18}, { 0x0F9F, 12}, { 0x16771, 18}, { 0x0ED0, 12},
1512 { 0x71843, 19}, { 0x0D2A, 12}, { 0xF9E8C, 20}, { 0x0461, 12}, { 0xF9E8E, 20}, { 0x0B67, 13},
1513 { 0x055F, 13}, { 0x003F, 6}, { 0x006D, 9}, { 0x0E90, 12}, { 0x054E, 13}, { 0x0013, 6},
1514 { 0x0119, 10}, { 0x0B66, 13}, { 0x000B, 6}, { 0x0235, 11}, { 0x7CF5, 15}, { 0x0075, 7},
1515 { 0x0D24, 12}, { 0xF9E9, 16}, { 0x002E, 7}, { 0x1F22, 13}, { 0x0021, 7}, { 0x054F, 13},
1516 { 0x0014, 7}, { 0x3A44, 14}, { 0x00E4, 8}, { 0x7CF7, 15}, { 0x005E, 8}, { 0x7185, 15},
1517 { 0x0037, 8}, { 0x2C73, 15}, { 0x01DB, 9}, { 0x59DD, 16}, { 0x01C7, 9}, { 0x692B, 15},
1518 { 0x01A6, 9}, { 0x58E5, 16}, { 0x00B4, 9}, { 0x1F3D0, 17}, { 0x00B0, 9}, { 0xB1C9, 17},
1519 { 0x03E6, 10}, { 0x16770, 18}, { 0x016E, 10}, { 0x3E7A2, 18}, { 0x011B, 10}, { 0xF9E8D, 20},
1520 { 0x00D9, 10}, { 0xF9E8F, 20}, { 0x00A8, 10}, { 0x2C723, 19}, { 0x0749, 11}, { 0xE3084, 20},
1521 { 0x0696, 11}, { 0x58E45, 20}, { 0x02DE, 11}, { 0xB1C88, 21}, { 0x0231, 11}, { 0x1C610A, 21},
1522 { 0x01B1, 11}, { 0x71842D, 23}, { 0x0D2B, 12}, { 0x38C217, 22}, { 0x0D2F, 12}, { 0x163913, 22},
1523 { 0x05B2, 12}, { 0x163912, 22}, { 0x0469, 12}, { 0x71842C, 23}, { 0x1A42, 13}, { 0x08C1, 13},
1528 static const uint16_t vlc_offs[] = {
1529 0, 520, 552, 616, 1128, 1160, 1224, 1740, 1772, 1836, 1900, 2436,
1530 2986, 3050, 3610, 4154, 4218, 4746, 5326, 5390, 5902, 6554, 7658, 8342,
1531 9304, 9988, 10630, 11234, 12174, 13006, 13560, 14232, 14786, 15432, 16350, 17522,
1532 20372, 21818, 22330, 22394, 23166, 23678, 23742, 24820, 25332, 25396, 26460, 26980,
1533 27048, 27592, 27600, 27608, 27616, 27624, 28224, 28258, 28290, 28802, 28834, 28866,
1534 29378, 29412, 29444, 29960, 29994, 30026, 30538, 30572, 30604, 31120, 31154, 31186,
1535 31714, 31746, 31778, 32306, 32340, 32372
1539 * Init VC-1 specific tables and VC1Context members
1540 * @param v The VC1Context to initialize
1543 int ff_vc1_init_common(VC1Context *v)
1545 static int done = 0;
1547 static VLC_TYPE vlc_table[32372][2];
1549 v->hrd_rate = v->hrd_buffer = NULL;
1553 INIT_VLC_STATIC(&ff_vc1_bfraction_vlc, VC1_BFRACTION_VLC_BITS, 23,
1554 ff_vc1_bfraction_bits, 1, 1,
1555 ff_vc1_bfraction_codes, 1, 1, 1 << VC1_BFRACTION_VLC_BITS);
1556 INIT_VLC_STATIC(&ff_vc1_norm2_vlc, VC1_NORM2_VLC_BITS, 4,
1557 ff_vc1_norm2_bits, 1, 1,
1558 ff_vc1_norm2_codes, 1, 1, 1 << VC1_NORM2_VLC_BITS);
1559 INIT_VLC_STATIC(&ff_vc1_norm6_vlc, VC1_NORM6_VLC_BITS, 64,
1560 ff_vc1_norm6_bits, 1, 1,
1561 ff_vc1_norm6_codes, 2, 2, 556);
1562 INIT_VLC_STATIC(&ff_vc1_imode_vlc, VC1_IMODE_VLC_BITS, 7,
1563 ff_vc1_imode_bits, 1, 1,
1564 ff_vc1_imode_codes, 1, 1, 1 << VC1_IMODE_VLC_BITS);
1565 for (i = 0; i < 3; i++) {
1566 ff_vc1_ttmb_vlc[i].table = &vlc_table[vlc_offs[i * 3 + 0]];
1567 ff_vc1_ttmb_vlc[i].table_allocated = vlc_offs[i * 3 + 1] - vlc_offs[i * 3 + 0];
1568 init_vlc(&ff_vc1_ttmb_vlc[i], VC1_TTMB_VLC_BITS, 16,
1569 ff_vc1_ttmb_bits[i], 1, 1,
1570 ff_vc1_ttmb_codes[i], 2, 2, INIT_VLC_USE_NEW_STATIC);
1571 ff_vc1_ttblk_vlc[i].table = &vlc_table[vlc_offs[i * 3 + 1]];
1572 ff_vc1_ttblk_vlc[i].table_allocated = vlc_offs[i * 3 + 2] - vlc_offs[i * 3 + 1];
1573 init_vlc(&ff_vc1_ttblk_vlc[i], VC1_TTBLK_VLC_BITS, 8,
1574 ff_vc1_ttblk_bits[i], 1, 1,
1575 ff_vc1_ttblk_codes[i], 1, 1, INIT_VLC_USE_NEW_STATIC);
1576 ff_vc1_subblkpat_vlc[i].table = &vlc_table[vlc_offs[i * 3 + 2]];
1577 ff_vc1_subblkpat_vlc[i].table_allocated = vlc_offs[i * 3 + 3] - vlc_offs[i * 3 + 2];
1578 init_vlc(&ff_vc1_subblkpat_vlc[i], VC1_SUBBLKPAT_VLC_BITS, 15,
1579 ff_vc1_subblkpat_bits[i], 1, 1,
1580 ff_vc1_subblkpat_codes[i], 1, 1, INIT_VLC_USE_NEW_STATIC);
1582 for (i = 0; i < 4; i++) {
1583 ff_vc1_4mv_block_pattern_vlc[i].table = &vlc_table[vlc_offs[i * 3 + 9]];
1584 ff_vc1_4mv_block_pattern_vlc[i].table_allocated = vlc_offs[i * 3 + 10] - vlc_offs[i * 3 + 9];
1585 init_vlc(&ff_vc1_4mv_block_pattern_vlc[i], VC1_4MV_BLOCK_PATTERN_VLC_BITS, 16,
1586 ff_vc1_4mv_block_pattern_bits[i], 1, 1,
1587 ff_vc1_4mv_block_pattern_codes[i], 1, 1, INIT_VLC_USE_NEW_STATIC);
1588 ff_vc1_cbpcy_p_vlc[i].table = &vlc_table[vlc_offs[i * 3 + 10]];
1589 ff_vc1_cbpcy_p_vlc[i].table_allocated = vlc_offs[i * 3 + 11] - vlc_offs[i * 3 + 10];
1590 init_vlc(&ff_vc1_cbpcy_p_vlc[i], VC1_CBPCY_P_VLC_BITS, 64,
1591 ff_vc1_cbpcy_p_bits[i], 1, 1,
1592 ff_vc1_cbpcy_p_codes[i], 2, 2, INIT_VLC_USE_NEW_STATIC);
1593 ff_vc1_mv_diff_vlc[i].table = &vlc_table[vlc_offs[i * 3 + 11]];
1594 ff_vc1_mv_diff_vlc[i].table_allocated = vlc_offs[i * 3 + 12] - vlc_offs[i * 3 + 11];
1595 init_vlc(&ff_vc1_mv_diff_vlc[i], VC1_MV_DIFF_VLC_BITS, 73,
1596 ff_vc1_mv_diff_bits[i], 1, 1,
1597 ff_vc1_mv_diff_codes[i], 2, 2, INIT_VLC_USE_NEW_STATIC);
1599 for (i = 0; i < 8; i++) {
1600 ff_vc1_ac_coeff_table[i].table = &vlc_table[vlc_offs[i * 2 + 21]];
1601 ff_vc1_ac_coeff_table[i].table_allocated = vlc_offs[i * 2 + 22] - vlc_offs[i * 2 + 21];
1602 init_vlc(&ff_vc1_ac_coeff_table[i], AC_VLC_BITS, ff_vc1_ac_sizes[i],
1603 &vc1_ac_tables[i][0][1], 8, 4,
1604 &vc1_ac_tables[i][0][0], 8, 4, INIT_VLC_USE_NEW_STATIC);
1605 /* initialize interlaced MVDATA tables (2-Ref) */
1606 ff_vc1_2ref_mvdata_vlc[i].table = &vlc_table[vlc_offs[i * 2 + 22]];
1607 ff_vc1_2ref_mvdata_vlc[i].table_allocated = vlc_offs[i * 2 + 23] - vlc_offs[i * 2 + 22];
1608 init_vlc(&ff_vc1_2ref_mvdata_vlc[i], VC1_2REF_MVDATA_VLC_BITS, 126,
1609 ff_vc1_2ref_mvdata_bits[i], 1, 1,
1610 ff_vc1_2ref_mvdata_codes[i], 4, 4, INIT_VLC_USE_NEW_STATIC);
1612 for (i = 0; i < 4; i++) {
1613 /* initialize 4MV MBMODE VLC tables for interlaced frame P picture */
1614 ff_vc1_intfr_4mv_mbmode_vlc[i].table = &vlc_table[vlc_offs[i * 3 + 37]];
1615 ff_vc1_intfr_4mv_mbmode_vlc[i].table_allocated = vlc_offs[i * 3 + 38] - vlc_offs[i * 3 + 37];
1616 init_vlc(&ff_vc1_intfr_4mv_mbmode_vlc[i], VC1_INTFR_4MV_MBMODE_VLC_BITS, 15,
1617 ff_vc1_intfr_4mv_mbmode_bits[i], 1, 1,
1618 ff_vc1_intfr_4mv_mbmode_codes[i], 2, 2, INIT_VLC_USE_NEW_STATIC);
1619 /* initialize NON-4MV MBMODE VLC tables for the same */
1620 ff_vc1_intfr_non4mv_mbmode_vlc[i].table = &vlc_table[vlc_offs[i * 3 + 38]];
1621 ff_vc1_intfr_non4mv_mbmode_vlc[i].table_allocated = vlc_offs[i * 3 + 39] - vlc_offs[i * 3 + 38];
1622 init_vlc(&ff_vc1_intfr_non4mv_mbmode_vlc[i], VC1_INTFR_NON4MV_MBMODE_VLC_BITS, 9,
1623 ff_vc1_intfr_non4mv_mbmode_bits[i], 1, 1,
1624 ff_vc1_intfr_non4mv_mbmode_codes[i], 1, 1, INIT_VLC_USE_NEW_STATIC);
1625 /* initialize interlaced MVDATA tables (1-Ref) */
1626 ff_vc1_1ref_mvdata_vlc[i].table = &vlc_table[vlc_offs[i * 3 + 39]];
1627 ff_vc1_1ref_mvdata_vlc[i].table_allocated = vlc_offs[i * 3 + 40] - vlc_offs[i * 3 + 39];
1628 init_vlc(&ff_vc1_1ref_mvdata_vlc[i], VC1_1REF_MVDATA_VLC_BITS, 72,
1629 ff_vc1_1ref_mvdata_bits[i], 1, 1,
1630 ff_vc1_1ref_mvdata_codes[i], 4, 4, INIT_VLC_USE_NEW_STATIC);
1632 for (i = 0; i < 4; i++) {
1633 /* Initialize 2MV Block pattern VLC tables */
1634 ff_vc1_2mv_block_pattern_vlc[i].table = &vlc_table[vlc_offs[i + 49]];
1635 ff_vc1_2mv_block_pattern_vlc[i].table_allocated = vlc_offs[i + 50] - vlc_offs[i + 49];
1636 init_vlc(&ff_vc1_2mv_block_pattern_vlc[i], VC1_2MV_BLOCK_PATTERN_VLC_BITS, 4,
1637 ff_vc1_2mv_block_pattern_bits[i], 1, 1,
1638 ff_vc1_2mv_block_pattern_codes[i], 1, 1, INIT_VLC_USE_NEW_STATIC);
1640 for (i = 0; i < 8; i++) {
1641 /* Initialize interlaced CBPCY VLC tables (Table 124 - Table 131) */
1642 ff_vc1_icbpcy_vlc[i].table = &vlc_table[vlc_offs[i * 3 + 53]];
1643 ff_vc1_icbpcy_vlc[i].table_allocated = vlc_offs[i * 3 + 54] - vlc_offs[i * 3 + 53];
1644 init_vlc(&ff_vc1_icbpcy_vlc[i], VC1_ICBPCY_VLC_BITS, 63,
1645 ff_vc1_icbpcy_p_bits[i], 1, 1,
1646 ff_vc1_icbpcy_p_codes[i], 2, 2, INIT_VLC_USE_NEW_STATIC);
1647 /* Initialize interlaced field picture MBMODE VLC tables */
1648 ff_vc1_if_mmv_mbmode_vlc[i].table = &vlc_table[vlc_offs[i * 3 + 54]];
1649 ff_vc1_if_mmv_mbmode_vlc[i].table_allocated = vlc_offs[i * 3 + 55] - vlc_offs[i * 3 + 54];
1650 init_vlc(&ff_vc1_if_mmv_mbmode_vlc[i], VC1_IF_MMV_MBMODE_VLC_BITS, 8,
1651 ff_vc1_if_mmv_mbmode_bits[i], 1, 1,
1652 ff_vc1_if_mmv_mbmode_codes[i], 1, 1, INIT_VLC_USE_NEW_STATIC);
1653 ff_vc1_if_1mv_mbmode_vlc[i].table = &vlc_table[vlc_offs[i * 3 + 55]];
1654 ff_vc1_if_1mv_mbmode_vlc[i].table_allocated = vlc_offs[i * 3 + 56] - vlc_offs[i * 3 + 55];
1655 init_vlc(&ff_vc1_if_1mv_mbmode_vlc[i], VC1_IF_1MV_MBMODE_VLC_BITS, 6,
1656 ff_vc1_if_1mv_mbmode_bits[i], 1, 1,
1657 ff_vc1_if_1mv_mbmode_codes[i], 1, 1, INIT_VLC_USE_NEW_STATIC);
1662 /* Other defaults */
1664 v->mvrange = 0; /* 7.1.1.18, p80 */