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
32 #include "mpegvideo.h"
35 #include "msmpeg4data.h"
37 #include "simple_idct.h"
42 /***********************************************************************/
44 * @name VC-1 Bitplane decoding
62 /** @} */ //imode defines
64 /** Decode rows by checking if they are skipped
65 * @param plane Buffer to store decoded bits
66 * @param[in] width Width of this buffer
67 * @param[in] height Height of this buffer
68 * @param[in] stride of this buffer
70 static void decode_rowskip(uint8_t* plane, int width, int height, int stride,
75 for (y = 0; y < height; y++) {
76 if (!get_bits1(gb)) //rowskip
77 memset(plane, 0, width);
79 for (x = 0; x < width; x++)
80 plane[x] = get_bits1(gb);
85 /** Decode columns by checking if they are skipped
86 * @param plane Buffer to store decoded bits
87 * @param[in] width Width of this buffer
88 * @param[in] height Height of this buffer
89 * @param[in] stride of this buffer
90 * @todo FIXME: Optimize
92 static void decode_colskip(uint8_t* plane, int width, int height, int stride,
97 for (x = 0; x < width; x++) {
98 if (!get_bits1(gb)) //colskip
99 for (y = 0; y < height; y++)
102 for (y = 0; y < height; y++)
103 plane[y*stride] = get_bits1(gb);
108 /** Decode a bitplane's bits
109 * @param data bitplane where to store the decode bits
110 * @param[out] raw_flag pointer to the flag indicating that this bitplane is not coded explicitly
111 * @param v VC-1 context for bit reading and logging
113 * @todo FIXME: Optimize
115 static int bitplane_decoding(uint8_t* data, int *raw_flag, VC1Context *v)
117 GetBitContext *gb = &v->s.gb;
119 int imode, x, y, code, offset;
120 uint8_t invert, *planep = data;
121 int width, height, stride;
123 width = v->s.mb_width;
124 height = v->s.mb_height >> v->field_mode;
125 stride = v->s.mb_stride;
126 invert = get_bits1(gb);
127 imode = get_vlc2(gb, ff_vc1_imode_vlc.table, VC1_IMODE_VLC_BITS, 1);
132 //Data is actually read in the MB layer (same for all tests == "raw")
133 *raw_flag = 1; //invert ignored
137 if ((height * width) & 1) {
138 *planep++ = get_bits1(gb);
143 // decode bitplane as one long line
144 for (y = offset; y < height * width; y += 2) {
145 code = get_vlc2(gb, ff_vc1_norm2_vlc.table, VC1_NORM2_VLC_BITS, 1);
146 *planep++ = code & 1;
148 if (offset == width) {
150 planep += stride - width;
152 *planep++ = code >> 1;
154 if (offset == width) {
156 planep += stride - width;
162 if (!(height % 3) && (width % 3)) { // use 2x3 decoding
163 for (y = 0; y < height; y += 3) {
164 for (x = width & 1; x < width; x += 2) {
165 code = get_vlc2(gb, ff_vc1_norm6_vlc.table, VC1_NORM6_VLC_BITS, 2);
167 av_log(v->s.avctx, AV_LOG_DEBUG, "invalid NORM-6 VLC\n");
170 planep[x + 0] = (code >> 0) & 1;
171 planep[x + 1] = (code >> 1) & 1;
172 planep[x + 0 + stride] = (code >> 2) & 1;
173 planep[x + 1 + stride] = (code >> 3) & 1;
174 planep[x + 0 + stride * 2] = (code >> 4) & 1;
175 planep[x + 1 + stride * 2] = (code >> 5) & 1;
177 planep += stride * 3;
180 decode_colskip(data, 1, height, stride, &v->s.gb);
182 planep += (height & 1) * stride;
183 for (y = height & 1; y < height; y += 2) {
184 for (x = width % 3; x < width; x += 3) {
185 code = get_vlc2(gb, ff_vc1_norm6_vlc.table, VC1_NORM6_VLC_BITS, 2);
187 av_log(v->s.avctx, AV_LOG_DEBUG, "invalid NORM-6 VLC\n");
190 planep[x + 0] = (code >> 0) & 1;
191 planep[x + 1] = (code >> 1) & 1;
192 planep[x + 2] = (code >> 2) & 1;
193 planep[x + 0 + stride] = (code >> 3) & 1;
194 planep[x + 1 + stride] = (code >> 4) & 1;
195 planep[x + 2 + stride] = (code >> 5) & 1;
197 planep += stride * 2;
201 decode_colskip(data, x, height, stride, &v->s.gb);
203 decode_rowskip(data + x, width - x, 1, stride, &v->s.gb);
207 decode_rowskip(data, width, height, stride, &v->s.gb);
210 decode_colskip(data, width, height, stride, &v->s.gb);
216 /* Applying diff operator */
217 if (imode == IMODE_DIFF2 || imode == IMODE_DIFF6) {
220 for (x = 1; x < width; x++)
221 planep[x] ^= planep[x-1];
222 for (y = 1; y < height; y++) {
224 planep[0] ^= planep[-stride];
225 for (x = 1; x < width; x++) {
226 if (planep[x-1] != planep[x-stride]) planep[x] ^= invert;
227 else planep[x] ^= planep[x-1];
232 for (x = 0; x < stride * height; x++)
233 planep[x] = !planep[x]; //FIXME stride
235 return (imode << 1) + invert;
238 /** @} */ //Bitplane group
240 /***********************************************************************/
241 /** VOP Dquant decoding
242 * @param v VC-1 Context
244 static int vop_dquant_decoding(VC1Context *v)
246 GetBitContext *gb = &v->s.gb;
250 if (v->dquant == 2) {
251 pqdiff = get_bits(gb, 3);
253 v->altpq = get_bits(gb, 5);
255 v->altpq = v->pq + pqdiff + 1;
257 v->dquantfrm = get_bits1(gb);
259 v->dqprofile = get_bits(gb, 2);
260 switch (v->dqprofile) {
261 case DQPROFILE_SINGLE_EDGE:
262 case DQPROFILE_DOUBLE_EDGES:
263 v->dqsbedge = get_bits(gb, 2);
265 case DQPROFILE_ALL_MBS:
266 v->dqbilevel = get_bits1(gb);
272 if (v->dqbilevel || v->dqprofile != DQPROFILE_ALL_MBS) {
273 pqdiff = get_bits(gb, 3);
275 v->altpq = get_bits(gb, 5);
277 v->altpq = v->pq + pqdiff + 1;
284 static int decode_sequence_header_adv(VC1Context *v, GetBitContext *gb);
287 * Decode Simple/Main Profiles sequence header
288 * @see Figure 7-8, p16-17
289 * @param avctx Codec context
290 * @param gb GetBit context initialized from Codec context extra_data
293 int ff_vc1_decode_sequence_header(AVCodecContext *avctx, VC1Context *v, GetBitContext *gb)
295 av_log(avctx, AV_LOG_DEBUG, "Header: %0X\n", show_bits_long(gb, 32));
296 v->profile = get_bits(gb, 2);
297 if (v->profile == PROFILE_COMPLEX) {
298 av_log(avctx, AV_LOG_WARNING, "WMV3 Complex Profile is not fully supported\n");
301 if (v->profile == PROFILE_ADVANCED) {
302 v->zz_8x4 = ff_vc1_adv_progressive_8x4_zz;
303 v->zz_4x8 = ff_vc1_adv_progressive_4x8_zz;
304 return decode_sequence_header_adv(v, gb);
306 v->zz_8x4 = ff_wmv2_scantableA;
307 v->zz_4x8 = ff_wmv2_scantableB;
308 v->res_y411 = get_bits1(gb);
309 v->res_sprite = get_bits1(gb);
311 av_log(avctx, AV_LOG_ERROR,
312 "Old interlaced mode is not supported\n");
318 v->frmrtq_postproc = get_bits(gb, 3); //common
319 // (bitrate-32kbps)/64kbps
320 v->bitrtq_postproc = get_bits(gb, 5); //common
321 v->s.loop_filter = get_bits1(gb); //common
322 if (v->s.loop_filter == 1 && v->profile == PROFILE_SIMPLE) {
323 av_log(avctx, AV_LOG_ERROR,
324 "LOOPFILTER shall not be enabled in Simple Profile\n");
326 if (v->s.avctx->skip_loop_filter >= AVDISCARD_ALL)
327 v->s.loop_filter = 0;
329 v->res_x8 = get_bits1(gb); //reserved
330 v->multires = get_bits1(gb);
331 v->res_fasttx = get_bits1(gb);
332 if (!v->res_fasttx) {
333 v->vc1dsp.vc1_inv_trans_8x8 = ff_simple_idct_8;
334 v->vc1dsp.vc1_inv_trans_8x4 = ff_simple_idct84_add;
335 v->vc1dsp.vc1_inv_trans_4x8 = ff_simple_idct48_add;
336 v->vc1dsp.vc1_inv_trans_4x4 = ff_simple_idct44_add;
337 v->vc1dsp.vc1_inv_trans_8x8_dc = ff_simple_idct_add_8;
338 v->vc1dsp.vc1_inv_trans_8x4_dc = ff_simple_idct84_add;
339 v->vc1dsp.vc1_inv_trans_4x8_dc = ff_simple_idct48_add;
340 v->vc1dsp.vc1_inv_trans_4x4_dc = ff_simple_idct44_add;
343 v->fastuvmc = get_bits1(gb); //common
344 if (!v->profile && !v->fastuvmc) {
345 av_log(avctx, AV_LOG_ERROR,
346 "FASTUVMC unavailable in Simple Profile\n");
349 v->extended_mv = get_bits1(gb); //common
350 if (!v->profile && v->extended_mv)
352 av_log(avctx, AV_LOG_ERROR,
353 "Extended MVs unavailable in Simple Profile\n");
356 v->dquant = get_bits(gb, 2); //common
357 v->vstransform = get_bits1(gb); //common
359 v->res_transtab = get_bits1(gb);
362 av_log(avctx, AV_LOG_ERROR,
363 "1 for reserved RES_TRANSTAB is forbidden\n");
367 v->overlap = get_bits1(gb); //common
369 v->s.resync_marker = get_bits1(gb);
370 v->rangered = get_bits1(gb);
371 if (v->rangered && v->profile == PROFILE_SIMPLE) {
372 av_log(avctx, AV_LOG_INFO,
373 "RANGERED should be set to 0 in Simple Profile\n");
376 v->s.max_b_frames = avctx->max_b_frames = get_bits(gb, 3); //common
377 v->quantizer_mode = get_bits(gb, 2); //common
379 v->finterpflag = get_bits1(gb); //common
382 int w = get_bits(gb, 11);
383 int h = get_bits(gb, 11);
384 avcodec_set_dimensions(v->s.avctx, w, h);
385 skip_bits(gb, 5); //frame rate
386 v->res_x8 = get_bits1(gb);
387 if (get_bits1(gb)) { // something to do with DC VLC selection
388 av_log(avctx, AV_LOG_ERROR, "Unsupported sprite feature\n");
391 skip_bits(gb, 3); //slice code
394 v->res_rtm_flag = get_bits1(gb); //reserved
396 if (!v->res_rtm_flag) {
397 av_log(avctx, AV_LOG_ERROR,
398 "Old WMV3 version detected, some frames may be decoded incorrectly\n");
401 //TODO: figure out what they mean (always 0x402F)
404 av_log(avctx, AV_LOG_DEBUG,
405 "Profile %i:\nfrmrtq_postproc=%i, bitrtq_postproc=%i\n"
406 "LoopFilter=%i, MultiRes=%i, FastUVMC=%i, Extended MV=%i\n"
407 "Rangered=%i, VSTransform=%i, Overlap=%i, SyncMarker=%i\n"
408 "DQuant=%i, Quantizer mode=%i, Max B frames=%i\n",
409 v->profile, v->frmrtq_postproc, v->bitrtq_postproc,
410 v->s.loop_filter, v->multires, v->fastuvmc, v->extended_mv,
411 v->rangered, v->vstransform, v->overlap, v->s.resync_marker,
412 v->dquant, v->quantizer_mode, avctx->max_b_frames);
416 static int decode_sequence_header_adv(VC1Context *v, GetBitContext *gb)
419 v->level = get_bits(gb, 3);
421 av_log(v->s.avctx, AV_LOG_ERROR, "Reserved LEVEL %i\n",v->level);
423 v->chromaformat = get_bits(gb, 2);
424 if (v->chromaformat != 1) {
425 av_log(v->s.avctx, AV_LOG_ERROR,
426 "Only 4:2:0 chroma format supported\n");
431 v->frmrtq_postproc = get_bits(gb, 3); //common
432 // (bitrate-32kbps)/64kbps
433 v->bitrtq_postproc = get_bits(gb, 5); //common
434 v->postprocflag = get_bits1(gb); //common
436 v->max_coded_width = (get_bits(gb, 12) + 1) << 1;
437 v->max_coded_height = (get_bits(gb, 12) + 1) << 1;
438 v->broadcast = get_bits1(gb);
439 v->interlace = get_bits1(gb);
440 v->tfcntrflag = get_bits1(gb);
441 v->finterpflag = get_bits1(gb);
442 skip_bits1(gb); // reserved
444 av_log(v->s.avctx, AV_LOG_DEBUG,
445 "Advanced Profile level %i:\nfrmrtq_postproc=%i, bitrtq_postproc=%i\n"
446 "LoopFilter=%i, ChromaFormat=%i, Pulldown=%i, Interlace: %i\n"
447 "TFCTRflag=%i, FINTERPflag=%i\n",
448 v->level, v->frmrtq_postproc, v->bitrtq_postproc,
449 v->s.loop_filter, v->chromaformat, v->broadcast, v->interlace,
450 v->tfcntrflag, v->finterpflag);
452 v->psf = get_bits1(gb);
453 if (v->psf) { //PsF, 6.1.13
454 av_log(v->s.avctx, AV_LOG_ERROR, "Progressive Segmented Frame mode: not supported (yet)\n");
457 v->s.max_b_frames = v->s.avctx->max_b_frames = 7;
458 if (get_bits1(gb)) { //Display Info - decoding is not affected by it
460 av_log(v->s.avctx, AV_LOG_DEBUG, "Display extended info:\n");
461 w = get_bits(gb, 14) + 1;
462 h = get_bits(gb, 14) + 1;
463 av_log(v->s.avctx, AV_LOG_DEBUG, "Display dimensions: %ix%i\n", w, h);
465 ar = get_bits(gb, 4);
467 v->s.avctx->sample_aspect_ratio = ff_vc1_pixel_aspect[ar];
468 } else if (ar == 15) {
469 w = get_bits(gb, 8) + 1;
470 h = get_bits(gb, 8) + 1;
471 v->s.avctx->sample_aspect_ratio = (AVRational){w, h};
473 av_reduce(&v->s.avctx->sample_aspect_ratio.num,
474 &v->s.avctx->sample_aspect_ratio.den,
475 v->s.avctx->height * w,
476 v->s.avctx->width * h,
479 av_log(v->s.avctx, AV_LOG_DEBUG, "Aspect: %i:%i\n",
480 v->s.avctx->sample_aspect_ratio.num,
481 v->s.avctx->sample_aspect_ratio.den);
483 if (get_bits1(gb)) { //framerate stuff
485 v->s.avctx->time_base.num = 32;
486 v->s.avctx->time_base.den = get_bits(gb, 16) + 1;
489 nr = get_bits(gb, 8);
490 dr = get_bits(gb, 4);
491 if (nr > 0 && nr < 8 && dr > 0 && dr < 3) {
492 v->s.avctx->time_base.num = ff_vc1_fps_dr[dr - 1];
493 v->s.avctx->time_base.den = ff_vc1_fps_nr[nr - 1] * 1000;
496 if (v->broadcast) { // Pulldown may be present
497 v->s.avctx->time_base.den *= 2;
498 v->s.avctx->ticks_per_frame = 2;
503 v->s.avctx->color_primaries = get_bits(gb, 8);
504 v->s.avctx->color_trc = get_bits(gb, 8);
505 v->s.avctx->colorspace = get_bits(gb, 8);
506 v->s.avctx->color_range = AVCOL_RANGE_MPEG;
510 v->hrd_param_flag = get_bits1(gb);
511 if (v->hrd_param_flag) {
513 v->hrd_num_leaky_buckets = get_bits(gb, 5);
514 skip_bits(gb, 4); //bitrate exponent
515 skip_bits(gb, 4); //buffer size exponent
516 for (i = 0; i < v->hrd_num_leaky_buckets; i++) {
517 skip_bits(gb, 16); //hrd_rate[n]
518 skip_bits(gb, 16); //hrd_buffer[n]
524 int ff_vc1_decode_entry_point(AVCodecContext *avctx, VC1Context *v, GetBitContext *gb)
529 av_log(avctx, AV_LOG_DEBUG, "Entry point: %08X\n", show_bits_long(gb, 32));
530 v->broken_link = get_bits1(gb);
531 v->closed_entry = get_bits1(gb);
532 v->panscanflag = get_bits1(gb);
533 v->refdist_flag = get_bits1(gb);
534 v->s.loop_filter = get_bits1(gb);
535 if (v->s.avctx->skip_loop_filter >= AVDISCARD_ALL)
536 v->s.loop_filter = 0;
537 v->fastuvmc = get_bits1(gb);
538 v->extended_mv = get_bits1(gb);
539 v->dquant = get_bits(gb, 2);
540 v->vstransform = get_bits1(gb);
541 v->overlap = get_bits1(gb);
542 v->quantizer_mode = get_bits(gb, 2);
544 if (v->hrd_param_flag) {
545 for (i = 0; i < v->hrd_num_leaky_buckets; i++) {
546 skip_bits(gb, 8); //hrd_full[n]
551 w = (get_bits(gb, 12)+1)<<1;
552 h = (get_bits(gb, 12)+1)<<1;
554 w = v->max_coded_width;
555 h = v->max_coded_height;
557 avcodec_set_dimensions(avctx, w, h);
559 v->extended_dmv = get_bits1(gb);
560 if ((v->range_mapy_flag = get_bits1(gb))) {
561 av_log(avctx, AV_LOG_ERROR, "Luma scaling is not supported, expect wrong picture\n");
562 v->range_mapy = get_bits(gb, 3);
564 if ((v->range_mapuv_flag = get_bits1(gb))) {
565 av_log(avctx, AV_LOG_ERROR, "Chroma scaling is not supported, expect wrong picture\n");
566 v->range_mapuv = get_bits(gb, 3);
569 av_log(avctx, AV_LOG_DEBUG, "Entry point info:\n"
570 "BrokenLink=%i, ClosedEntry=%i, PanscanFlag=%i\n"
571 "RefDist=%i, Postproc=%i, FastUVMC=%i, ExtMV=%i\n"
572 "DQuant=%i, VSTransform=%i, Overlap=%i, Qmode=%i\n",
573 v->broken_link, v->closed_entry, v->panscanflag, v->refdist_flag, v->s.loop_filter,
574 v->fastuvmc, v->extended_mv, v->dquant, v->vstransform, v->overlap, v->quantizer_mode);
579 int ff_vc1_parse_frame_header(VC1Context *v, GetBitContext* gb)
581 int pqindex, lowquant, status;
584 v->interpfrm = get_bits1(gb);
585 if (!v->s.avctx->codec)
587 if (v->s.avctx->codec_id == AV_CODEC_ID_MSS2)
590 v->multires = get_bits(gb, 2) == 1;
592 skip_bits(gb, 2); //framecnt unused
595 v->rangeredfrm = get_bits1(gb);
596 v->s.pict_type = get_bits1(gb);
597 if (v->s.avctx->max_b_frames) {
598 if (!v->s.pict_type) {
600 v->s.pict_type = AV_PICTURE_TYPE_I;
602 v->s.pict_type = AV_PICTURE_TYPE_B;
604 v->s.pict_type = AV_PICTURE_TYPE_P;
606 v->s.pict_type = v->s.pict_type ? AV_PICTURE_TYPE_P : AV_PICTURE_TYPE_I;
609 if (v->s.pict_type == AV_PICTURE_TYPE_B) {
610 v->bfraction_lut_index = get_vlc2(gb, ff_vc1_bfraction_vlc.table, VC1_BFRACTION_VLC_BITS, 1);
611 v->bfraction = ff_vc1_bfraction_lut[v->bfraction_lut_index];
612 if (v->bfraction == 0) {
613 v->s.pict_type = AV_PICTURE_TYPE_BI;
616 if (v->s.pict_type == AV_PICTURE_TYPE_I || v->s.pict_type == AV_PICTURE_TYPE_BI)
617 skip_bits(gb, 7); // skip buffer fullness
623 if (v->s.pict_type == AV_PICTURE_TYPE_I || v->s.pict_type == AV_PICTURE_TYPE_BI)
625 if (v->s.pict_type == AV_PICTURE_TYPE_P)
628 /* Quantizer stuff */
629 pqindex = get_bits(gb, 5);
632 if (v->quantizer_mode == QUANT_FRAME_IMPLICIT)
633 v->pq = ff_vc1_pquant_table[0][pqindex];
635 v->pq = ff_vc1_pquant_table[1][pqindex];
638 if (v->quantizer_mode == QUANT_FRAME_IMPLICIT)
639 v->pquantizer = pqindex < 9;
640 if (v->quantizer_mode == QUANT_NON_UNIFORM)
642 v->pqindex = pqindex;
644 v->halfpq = get_bits1(gb);
647 if (v->quantizer_mode == QUANT_FRAME_EXPLICIT)
648 v->pquantizer = get_bits1(gb);
650 if (v->extended_mv == 1)
651 v->mvrange = get_unary(gb, 0, 3);
652 v->k_x = v->mvrange + 9 + (v->mvrange >> 1); //k_x can be 9 10 12 13
653 v->k_y = v->mvrange + 8; //k_y can be 8 9 10 11
654 v->range_x = 1 << (v->k_x - 1);
655 v->range_y = 1 << (v->k_y - 1);
656 if (v->multires && v->s.pict_type != AV_PICTURE_TYPE_B)
657 v->respic = get_bits(gb, 2);
659 if (v->res_x8 && (v->s.pict_type == AV_PICTURE_TYPE_I || v->s.pict_type == AV_PICTURE_TYPE_BI)) {
660 v->x8_type = get_bits1(gb);
663 av_dlog(v->s.avctx, "%c Frame: QP=[%i]%i (+%i/2) %i\n",
664 (v->s.pict_type == AV_PICTURE_TYPE_P) ? 'P' : ((v->s.pict_type == AV_PICTURE_TYPE_I) ? 'I' : 'B'),
665 pqindex, v->pq, v->halfpq, v->rangeredfrm);
667 if (v->s.pict_type == AV_PICTURE_TYPE_I || v->s.pict_type == AV_PICTURE_TYPE_P)
670 switch (v->s.pict_type) {
671 case AV_PICTURE_TYPE_P:
672 if (v->pq < 5) v->tt_index = 0;
673 else if (v->pq < 13) v->tt_index = 1;
674 else v->tt_index = 2;
676 lowquant = (v->pq > 12) ? 0 : 1;
677 v->mv_mode = ff_vc1_mv_pmode_table[lowquant][get_unary(gb, 1, 4)];
678 if (v->mv_mode == MV_PMODE_INTENSITY_COMP) {
680 v->mv_mode2 = ff_vc1_mv_pmode_table2[lowquant][get_unary(gb, 1, 3)];
681 v->lumscale = get_bits(gb, 6);
682 v->lumshift = get_bits(gb, 6);
684 /* fill lookup tables for intensity compensation */
687 shift = (255 - v->lumshift * 2) << 6;
688 if (v->lumshift > 31)
691 scale = v->lumscale + 32;
692 if (v->lumshift > 31)
693 shift = (v->lumshift - 64) << 6;
695 shift = v->lumshift << 6;
697 for (i = 0; i < 256; i++) {
698 v->luty[i] = av_clip_uint8((scale * i + shift + 32) >> 6);
699 v->lutuv[i] = av_clip_uint8((scale * (i - 128) + 128*64 + 32) >> 6);
702 v->qs_last = v->s.quarter_sample;
703 if (v->mv_mode == MV_PMODE_1MV_HPEL || v->mv_mode == MV_PMODE_1MV_HPEL_BILIN)
704 v->s.quarter_sample = 0;
705 else if (v->mv_mode == MV_PMODE_INTENSITY_COMP) {
706 if (v->mv_mode2 == MV_PMODE_1MV_HPEL || v->mv_mode2 == MV_PMODE_1MV_HPEL_BILIN)
707 v->s.quarter_sample = 0;
709 v->s.quarter_sample = 1;
711 v->s.quarter_sample = 1;
712 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));
714 if ((v->mv_mode == MV_PMODE_INTENSITY_COMP &&
715 v->mv_mode2 == MV_PMODE_MIXED_MV) ||
716 v->mv_mode == MV_PMODE_MIXED_MV) {
717 status = bitplane_decoding(v->mv_type_mb_plane, &v->mv_type_is_raw, v);
720 av_log(v->s.avctx, AV_LOG_DEBUG, "MB MV Type plane encoding: "
721 "Imode: %i, Invert: %i\n", status>>1, status&1);
723 v->mv_type_is_raw = 0;
724 memset(v->mv_type_mb_plane, 0, v->s.mb_stride * v->s.mb_height);
726 status = bitplane_decoding(v->s.mbskip_table, &v->skip_is_raw, v);
729 av_log(v->s.avctx, AV_LOG_DEBUG, "MB Skip plane encoding: "
730 "Imode: %i, Invert: %i\n", status>>1, status&1);
732 /* Hopefully this is correct for P frames */
733 v->s.mv_table_index = get_bits(gb, 2); //but using ff_vc1_ tables
734 v->cbpcy_vlc = &ff_vc1_cbpcy_p_vlc[get_bits(gb, 2)];
737 av_log(v->s.avctx, AV_LOG_DEBUG, "VOP DQuant info\n");
738 vop_dquant_decoding(v);
741 v->ttfrm = 0; //FIXME Is that so ?
742 if (v->vstransform) {
743 v->ttmbf = get_bits1(gb);
745 v->ttfrm = ff_vc1_ttfrm_to_tt[get_bits(gb, 2)];
752 case AV_PICTURE_TYPE_B:
753 if (v->pq < 5) v->tt_index = 0;
754 else if (v->pq < 13) v->tt_index = 1;
755 else v->tt_index = 2;
757 v->mv_mode = get_bits1(gb) ? MV_PMODE_1MV : MV_PMODE_1MV_HPEL_BILIN;
758 v->qs_last = v->s.quarter_sample;
759 v->s.quarter_sample = (v->mv_mode == MV_PMODE_1MV);
760 v->s.mspel = v->s.quarter_sample;
762 status = bitplane_decoding(v->direct_mb_plane, &v->dmb_is_raw, v);
765 av_log(v->s.avctx, AV_LOG_DEBUG, "MB Direct Type plane encoding: "
766 "Imode: %i, Invert: %i\n", status>>1, status&1);
767 status = bitplane_decoding(v->s.mbskip_table, &v->skip_is_raw, v);
770 av_log(v->s.avctx, AV_LOG_DEBUG, "MB Skip plane encoding: "
771 "Imode: %i, Invert: %i\n", status>>1, status&1);
773 v->s.mv_table_index = get_bits(gb, 2);
774 v->cbpcy_vlc = &ff_vc1_cbpcy_p_vlc[get_bits(gb, 2)];
777 av_log(v->s.avctx, AV_LOG_DEBUG, "VOP DQuant info\n");
778 vop_dquant_decoding(v);
782 if (v->vstransform) {
783 v->ttmbf = get_bits1(gb);
785 v->ttfrm = ff_vc1_ttfrm_to_tt[get_bits(gb, 2)];
796 v->c_ac_table_index = decode012(gb);
797 if (v->s.pict_type == AV_PICTURE_TYPE_I || v->s.pict_type == AV_PICTURE_TYPE_BI) {
798 v->y_ac_table_index = decode012(gb);
801 v->s.dc_table_index = get_bits1(gb);
804 if (v->s.pict_type == AV_PICTURE_TYPE_BI) {
805 v->s.pict_type = AV_PICTURE_TYPE_B;
811 /* fill lookup tables for intensity compensation */
812 #define INIT_LUT(lumscale, lumshift, luty, lutuv) \
815 shift = (255 - lumshift * 2) << 6; \
819 scale = lumscale + 32; \
821 shift = (lumshift - 64) << 6; \
823 shift = lumshift << 6; \
825 for (i = 0; i < 256; i++) { \
826 luty[i] = av_clip_uint8((scale * i + shift + 32) >> 6); \
827 lutuv[i] = av_clip_uint8((scale * (i - 128) + 128*64 + 32) >> 6); \
830 int ff_vc1_parse_frame_header_adv(VC1Context *v, GetBitContext* gb)
832 int pqindex, lowquant;
834 int mbmodetab, imvtab, icbptab, twomvbptab, fourmvbptab; /* useful only for debugging */
835 int scale, shift, i; /* for initializing LUT for intensity compensation */
839 v->p_frame_skipped = 0;
840 if (v->second_field) {
841 if(v->fcm!=2 || v->field_mode!=1)
843 v->s.pict_type = (v->fptype & 1) ? AV_PICTURE_TYPE_P : AV_PICTURE_TYPE_I;
845 v->s.pict_type = (v->fptype & 1) ? AV_PICTURE_TYPE_BI : AV_PICTURE_TYPE_B;
846 v->s.current_picture_ptr->f.pict_type = v->s.pict_type;
847 if (!v->pic_header_flag)
848 goto parse_common_info;
855 if (fcm == ILACE_FIELD)
857 if (!v->warn_interlaced++)
858 av_log(v->s.avctx, AV_LOG_ERROR,
859 "Interlaced frames/fields support is incomplete\n");
864 if (!v->first_pic_header_flag && v->field_mode != field_mode)
866 v->field_mode = field_mode;
870 v->fptype = get_bits(gb, 3);
871 v->s.pict_type = (v->fptype & 2) ? AV_PICTURE_TYPE_P : AV_PICTURE_TYPE_I;
872 if (v->fptype & 4) // B-picture
873 v->s.pict_type = (v->fptype & 2) ? AV_PICTURE_TYPE_BI : AV_PICTURE_TYPE_B;
875 switch (get_unary(gb, 0, 4)) {
877 v->s.pict_type = AV_PICTURE_TYPE_P;
880 v->s.pict_type = AV_PICTURE_TYPE_B;
883 v->s.pict_type = AV_PICTURE_TYPE_I;
886 v->s.pict_type = AV_PICTURE_TYPE_BI;
889 v->s.pict_type = AV_PICTURE_TYPE_P; // skipped pic
890 v->p_frame_skipped = 1;
897 if (!v->interlace || v->psf) {
898 v->rptfrm = get_bits(gb, 2);
900 v->tff = get_bits1(gb);
901 v->rff = get_bits1(gb);
904 if (v->panscanflag) {
905 avpriv_report_missing_feature(v->s.avctx, "Pan-scan");
908 if (v->p_frame_skipped) {
911 v->rnd = get_bits1(gb);
913 v->uvsamp = get_bits1(gb);
914 if(!ff_vc1_bfraction_vlc.table)
915 return 0; //parsing only, vlc tables havnt been allocated
917 if (!v->refdist_flag)
919 else if ((v->s.pict_type != AV_PICTURE_TYPE_B) && (v->s.pict_type != AV_PICTURE_TYPE_BI)) {
920 v->refdist = get_bits(gb, 2);
922 v->refdist += get_unary(gb, 0, 16);
924 if ((v->s.pict_type == AV_PICTURE_TYPE_B) || (v->s.pict_type == AV_PICTURE_TYPE_BI)) {
925 v->bfraction_lut_index = get_vlc2(gb, ff_vc1_bfraction_vlc.table, VC1_BFRACTION_VLC_BITS, 1);
926 v->bfraction = ff_vc1_bfraction_lut[v->bfraction_lut_index];
927 v->frfd = (v->bfraction * v->refdist) >> 8;
928 v->brfd = v->refdist - v->frfd - 1;
932 goto parse_common_info;
934 if (v->fcm == PROGRESSIVE) {
936 v->interpfrm = get_bits1(gb);
937 if (v->s.pict_type == AV_PICTURE_TYPE_B) {
938 v->bfraction_lut_index = get_vlc2(gb, ff_vc1_bfraction_vlc.table, VC1_BFRACTION_VLC_BITS, 1);
939 v->bfraction = ff_vc1_bfraction_lut[v->bfraction_lut_index];
940 if (v->bfraction == 0) {
941 v->s.pict_type = AV_PICTURE_TYPE_BI; /* XXX: should not happen here */
948 v->cur_field_type = !(v->tff ^ v->second_field);
949 pqindex = get_bits(gb, 5);
952 v->pqindex = pqindex;
953 if (v->quantizer_mode == QUANT_FRAME_IMPLICIT)
954 v->pq = ff_vc1_pquant_table[0][pqindex];
956 v->pq = ff_vc1_pquant_table[1][pqindex];
959 if (v->quantizer_mode == QUANT_FRAME_IMPLICIT)
960 v->pquantizer = pqindex < 9;
961 if (v->quantizer_mode == QUANT_NON_UNIFORM)
963 v->pqindex = pqindex;
965 v->halfpq = get_bits1(gb);
968 if (v->quantizer_mode == QUANT_FRAME_EXPLICIT)
969 v->pquantizer = get_bits1(gb);
971 v->postproc = get_bits(gb, 2);
973 if (v->s.pict_type == AV_PICTURE_TYPE_I || v->s.pict_type == AV_PICTURE_TYPE_P)
979 switch (v->s.pict_type) {
980 case AV_PICTURE_TYPE_I:
981 case AV_PICTURE_TYPE_BI:
982 if (v->fcm == ILACE_FRAME) { //interlace frame picture
983 status = bitplane_decoding(v->fieldtx_plane, &v->fieldtx_is_raw, v);
986 av_log(v->s.avctx, AV_LOG_DEBUG, "FIELDTX plane encoding: "
987 "Imode: %i, Invert: %i\n", status>>1, status&1);
989 status = bitplane_decoding(v->acpred_plane, &v->acpred_is_raw, v);
992 av_log(v->s.avctx, AV_LOG_DEBUG, "ACPRED plane encoding: "
993 "Imode: %i, Invert: %i\n", status>>1, status&1);
994 v->condover = CONDOVER_NONE;
995 if (v->overlap && v->pq <= 8) {
996 v->condover = decode012(gb);
997 if (v->condover == CONDOVER_SELECT) {
998 status = bitplane_decoding(v->over_flags_plane, &v->overflg_is_raw, v);
1001 av_log(v->s.avctx, AV_LOG_DEBUG, "CONDOVER plane encoding: "
1002 "Imode: %i, Invert: %i\n", status>>1, status&1);
1006 case AV_PICTURE_TYPE_P:
1007 if (v->field_mode) {
1008 v->numref = get_bits1(gb);
1010 v->reffield = get_bits1(gb);
1011 v->ref_field_type[0] = v->reffield ^ !v->cur_field_type;
1015 v->mvrange = get_unary(gb, 0, 3);
1019 if (v->extended_dmv)
1020 v->dmvrange = get_unary(gb, 0, 3);
1023 if (v->fcm == ILACE_FRAME) { // interlaced frame picture
1024 v->fourmvswitch = get_bits1(gb);
1025 v->intcomp = get_bits1(gb);
1027 v->lumscale = get_bits(gb, 6);
1028 v->lumshift = get_bits(gb, 6);
1029 INIT_LUT(v->lumscale, v->lumshift, v->luty, v->lutuv);
1031 status = bitplane_decoding(v->s.mbskip_table, &v->skip_is_raw, v);
1032 av_log(v->s.avctx, AV_LOG_DEBUG, "SKIPMB plane encoding: "
1033 "Imode: %i, Invert: %i\n", status>>1, status&1);
1034 mbmodetab = get_bits(gb, 2);
1035 if (v->fourmvswitch)
1036 v->mbmode_vlc = &ff_vc1_intfr_4mv_mbmode_vlc[mbmodetab];
1038 v->mbmode_vlc = &ff_vc1_intfr_non4mv_mbmode_vlc[mbmodetab];
1039 imvtab = get_bits(gb, 2);
1040 v->imv_vlc = &ff_vc1_1ref_mvdata_vlc[imvtab];
1041 // interlaced p-picture cbpcy range is [1, 63]
1042 icbptab = get_bits(gb, 3);
1043 v->cbpcy_vlc = &ff_vc1_icbpcy_vlc[icbptab];
1044 twomvbptab = get_bits(gb, 2);
1045 v->twomvbp_vlc = &ff_vc1_2mv_block_pattern_vlc[twomvbptab];
1046 if (v->fourmvswitch) {
1047 fourmvbptab = get_bits(gb, 2);
1048 v->fourmvbp_vlc = &ff_vc1_4mv_block_pattern_vlc[fourmvbptab];
1052 v->k_x = v->mvrange + 9 + (v->mvrange >> 1); //k_x can be 9 10 12 13
1053 v->k_y = v->mvrange + 8; //k_y can be 8 9 10 11
1054 v->range_x = 1 << (v->k_x - 1);
1055 v->range_y = 1 << (v->k_y - 1);
1059 else if (v->pq < 13)
1063 if (v->fcm != ILACE_FRAME) {
1065 mvmode = get_unary(gb, 1, 4);
1066 lowquant = (v->pq > 12) ? 0 : 1;
1067 v->mv_mode = ff_vc1_mv_pmode_table[lowquant][mvmode];
1068 if (v->mv_mode == MV_PMODE_INTENSITY_COMP) {
1070 mvmode2 = get_unary(gb, 1, 3);
1071 v->mv_mode2 = ff_vc1_mv_pmode_table2[lowquant][mvmode2];
1073 v->intcompfield = decode210(gb);
1074 v->lumscale = get_bits(gb, 6);
1075 v->lumshift = get_bits(gb, 6);
1076 INIT_LUT(v->lumscale, v->lumshift, v->luty, v->lutuv);
1077 if ((v->field_mode) && !v->intcompfield) {
1078 v->lumscale2 = get_bits(gb, 6);
1079 v->lumshift2 = get_bits(gb, 6);
1080 INIT_LUT(v->lumscale2, v->lumshift2, v->luty2, v->lutuv2);
1084 v->qs_last = v->s.quarter_sample;
1085 if (v->mv_mode == MV_PMODE_1MV_HPEL || v->mv_mode == MV_PMODE_1MV_HPEL_BILIN)
1086 v->s.quarter_sample = 0;
1087 else if (v->mv_mode == MV_PMODE_INTENSITY_COMP) {
1088 if (v->mv_mode2 == MV_PMODE_1MV_HPEL || v->mv_mode2 == MV_PMODE_1MV_HPEL_BILIN)
1089 v->s.quarter_sample = 0;
1091 v->s.quarter_sample = 1;
1093 v->s.quarter_sample = 1;
1094 v->s.mspel = !(v->mv_mode == MV_PMODE_1MV_HPEL_BILIN
1095 || (v->mv_mode == MV_PMODE_INTENSITY_COMP
1096 && v->mv_mode2 == MV_PMODE_1MV_HPEL_BILIN));
1098 if (v->fcm == PROGRESSIVE) { // progressive
1099 if ((v->mv_mode == MV_PMODE_INTENSITY_COMP &&
1100 v->mv_mode2 == MV_PMODE_MIXED_MV)
1101 || v->mv_mode == MV_PMODE_MIXED_MV) {
1102 status = bitplane_decoding(v->mv_type_mb_plane, &v->mv_type_is_raw, v);
1105 av_log(v->s.avctx, AV_LOG_DEBUG, "MB MV Type plane encoding: "
1106 "Imode: %i, Invert: %i\n", status>>1, status&1);
1108 v->mv_type_is_raw = 0;
1109 memset(v->mv_type_mb_plane, 0, v->s.mb_stride * v->s.mb_height);
1111 status = bitplane_decoding(v->s.mbskip_table, &v->skip_is_raw, v);
1114 av_log(v->s.avctx, AV_LOG_DEBUG, "MB Skip plane encoding: "
1115 "Imode: %i, Invert: %i\n", status>>1, status&1);
1117 /* Hopefully this is correct for P frames */
1118 v->s.mv_table_index = get_bits(gb, 2); //but using ff_vc1_ tables
1119 v->cbpcy_vlc = &ff_vc1_cbpcy_p_vlc[get_bits(gb, 2)];
1120 } else if (v->fcm == ILACE_FRAME) { // frame interlaced
1121 v->qs_last = v->s.quarter_sample;
1122 v->s.quarter_sample = 1;
1124 } else { // field interlaced
1125 mbmodetab = get_bits(gb, 3);
1126 imvtab = get_bits(gb, 2 + v->numref);
1128 v->imv_vlc = &ff_vc1_1ref_mvdata_vlc[imvtab];
1130 v->imv_vlc = &ff_vc1_2ref_mvdata_vlc[imvtab];
1131 icbptab = get_bits(gb, 3);
1132 v->cbpcy_vlc = &ff_vc1_icbpcy_vlc[icbptab];
1133 if ((v->mv_mode == MV_PMODE_INTENSITY_COMP &&
1134 v->mv_mode2 == MV_PMODE_MIXED_MV) || v->mv_mode == MV_PMODE_MIXED_MV) {
1135 fourmvbptab = get_bits(gb, 2);
1136 v->fourmvbp_vlc = &ff_vc1_4mv_block_pattern_vlc[fourmvbptab];
1137 v->mbmode_vlc = &ff_vc1_if_mmv_mbmode_vlc[mbmodetab];
1139 v->mbmode_vlc = &ff_vc1_if_1mv_mbmode_vlc[mbmodetab];
1143 av_log(v->s.avctx, AV_LOG_DEBUG, "VOP DQuant info\n");
1144 vop_dquant_decoding(v);
1147 v->ttfrm = 0; //FIXME Is that so ?
1148 if (v->vstransform) {
1149 v->ttmbf = get_bits1(gb);
1151 v->ttfrm = ff_vc1_ttfrm_to_tt[get_bits(gb, 2)];
1158 case AV_PICTURE_TYPE_B:
1159 if (v->fcm == ILACE_FRAME) {
1160 v->bfraction_lut_index = get_vlc2(gb, ff_vc1_bfraction_vlc.table, VC1_BFRACTION_VLC_BITS, 1);
1161 v->bfraction = ff_vc1_bfraction_lut[v->bfraction_lut_index];
1162 if (v->bfraction == 0) {
1167 v->mvrange = get_unary(gb, 0, 3);
1170 v->k_x = v->mvrange + 9 + (v->mvrange >> 1); //k_x can be 9 10 12 13
1171 v->k_y = v->mvrange + 8; //k_y can be 8 9 10 11
1172 v->range_x = 1 << (v->k_x - 1);
1173 v->range_y = 1 << (v->k_y - 1);
1177 else if (v->pq < 13)
1182 if (v->field_mode) {
1184 av_log(v->s.avctx, AV_LOG_DEBUG, "B Fields\n");
1185 if (v->extended_dmv)
1186 v->dmvrange = get_unary(gb, 0, 3);
1187 mvmode = get_unary(gb, 1, 3);
1188 lowquant = (v->pq > 12) ? 0 : 1;
1189 v->mv_mode = ff_vc1_mv_pmode_table2[lowquant][mvmode];
1190 v->qs_last = v->s.quarter_sample;
1191 v->s.quarter_sample = (v->mv_mode == MV_PMODE_1MV || v->mv_mode == MV_PMODE_MIXED_MV);
1192 v->s.mspel = !(v->mv_mode == MV_PMODE_1MV_HPEL_BILIN || v->mv_mode == MV_PMODE_1MV_HPEL);
1193 status = bitplane_decoding(v->forward_mb_plane, &v->fmb_is_raw, v);
1196 av_log(v->s.avctx, AV_LOG_DEBUG, "MB Forward Type plane encoding: "
1197 "Imode: %i, Invert: %i\n", status>>1, status&1);
1198 mbmodetab = get_bits(gb, 3);
1199 if (v->mv_mode == MV_PMODE_MIXED_MV)
1200 v->mbmode_vlc = &ff_vc1_if_mmv_mbmode_vlc[mbmodetab];
1202 v->mbmode_vlc = &ff_vc1_if_1mv_mbmode_vlc[mbmodetab];
1203 imvtab = get_bits(gb, 3);
1204 v->imv_vlc = &ff_vc1_2ref_mvdata_vlc[imvtab];
1205 icbptab = get_bits(gb, 3);
1206 v->cbpcy_vlc = &ff_vc1_icbpcy_vlc[icbptab];
1207 if (v->mv_mode == MV_PMODE_MIXED_MV) {
1208 fourmvbptab = get_bits(gb, 2);
1209 v->fourmvbp_vlc = &ff_vc1_4mv_block_pattern_vlc[fourmvbptab];
1211 v->numref = 1; // interlaced field B pictures are always 2-ref
1212 } else if (v->fcm == ILACE_FRAME) {
1213 if (v->extended_dmv)
1214 v->dmvrange = get_unary(gb, 0, 3);
1215 get_bits1(gb); /* intcomp - present but shall always be 0 */
1217 v->mv_mode = MV_PMODE_1MV;
1218 v->fourmvswitch = 0;
1219 v->qs_last = v->s.quarter_sample;
1220 v->s.quarter_sample = 1;
1222 status = bitplane_decoding(v->direct_mb_plane, &v->dmb_is_raw, v);
1225 av_log(v->s.avctx, AV_LOG_DEBUG, "MB Direct Type plane encoding: "
1226 "Imode: %i, Invert: %i\n", status>>1, status&1);
1227 status = bitplane_decoding(v->s.mbskip_table, &v->skip_is_raw, v);
1230 av_log(v->s.avctx, AV_LOG_DEBUG, "MB Skip plane encoding: "
1231 "Imode: %i, Invert: %i\n", status>>1, status&1);
1232 mbmodetab = get_bits(gb, 2);
1233 v->mbmode_vlc = &ff_vc1_intfr_non4mv_mbmode_vlc[mbmodetab];
1234 imvtab = get_bits(gb, 2);
1235 v->imv_vlc = &ff_vc1_1ref_mvdata_vlc[imvtab];
1236 // interlaced p/b-picture cbpcy range is [1, 63]
1237 icbptab = get_bits(gb, 3);
1238 v->cbpcy_vlc = &ff_vc1_icbpcy_vlc[icbptab];
1239 twomvbptab = get_bits(gb, 2);
1240 v->twomvbp_vlc = &ff_vc1_2mv_block_pattern_vlc[twomvbptab];
1241 fourmvbptab = get_bits(gb, 2);
1242 v->fourmvbp_vlc = &ff_vc1_4mv_block_pattern_vlc[fourmvbptab];
1244 v->mv_mode = get_bits1(gb) ? MV_PMODE_1MV : MV_PMODE_1MV_HPEL_BILIN;
1245 v->qs_last = v->s.quarter_sample;
1246 v->s.quarter_sample = (v->mv_mode == MV_PMODE_1MV);
1247 v->s.mspel = v->s.quarter_sample;
1248 status = bitplane_decoding(v->direct_mb_plane, &v->dmb_is_raw, v);
1251 av_log(v->s.avctx, AV_LOG_DEBUG, "MB Direct Type plane encoding: "
1252 "Imode: %i, Invert: %i\n", status>>1, status&1);
1253 status = bitplane_decoding(v->s.mbskip_table, &v->skip_is_raw, v);
1256 av_log(v->s.avctx, AV_LOG_DEBUG, "MB Skip plane encoding: "
1257 "Imode: %i, Invert: %i\n", status>>1, status&1);
1258 v->s.mv_table_index = get_bits(gb, 2);
1259 v->cbpcy_vlc = &ff_vc1_cbpcy_p_vlc[get_bits(gb, 2)];
1263 av_log(v->s.avctx, AV_LOG_DEBUG, "VOP DQuant info\n");
1264 vop_dquant_decoding(v);
1268 if (v->vstransform) {
1269 v->ttmbf = get_bits1(gb);
1271 v->ttfrm = ff_vc1_ttfrm_to_tt[get_bits(gb, 2)];
1280 if (v->fcm != PROGRESSIVE && !v->s.quarter_sample) {
1286 v->c_ac_table_index = decode012(gb);
1287 if (v->s.pict_type == AV_PICTURE_TYPE_I || v->s.pict_type == AV_PICTURE_TYPE_BI) {
1288 v->y_ac_table_index = decode012(gb);
1291 v->s.dc_table_index = get_bits1(gb);
1292 if ((v->s.pict_type == AV_PICTURE_TYPE_I || v->s.pict_type == AV_PICTURE_TYPE_BI)
1294 av_log(v->s.avctx, AV_LOG_DEBUG, "VOP DQuant info\n");
1295 vop_dquant_decoding(v);
1299 if (v->s.pict_type == AV_PICTURE_TYPE_BI) {
1300 v->s.pict_type = AV_PICTURE_TYPE_B;
1306 static const uint32_t vc1_ac_tables[AC_MODES][186][2] = {
1308 { 0x0001, 2}, { 0x0005, 3}, { 0x000D, 4}, { 0x0012, 5}, { 0x000E, 6}, { 0x0015, 7},
1309 { 0x0013, 8}, { 0x003F, 8}, { 0x004B, 9}, { 0x011F, 9}, { 0x00B8, 10}, { 0x03E3, 10},
1310 { 0x0172, 11}, { 0x024D, 12}, { 0x03DA, 12}, { 0x02DD, 13}, { 0x1F55, 13}, { 0x05B9, 14},
1311 { 0x3EAE, 14}, { 0x0000, 4}, { 0x0010, 5}, { 0x0008, 7}, { 0x0020, 8}, { 0x0029, 9},
1312 { 0x01F4, 9}, { 0x0233, 10}, { 0x01E0, 11}, { 0x012A, 12}, { 0x03DD, 12}, { 0x050A, 13},
1313 { 0x1F29, 13}, { 0x0A42, 14}, { 0x1272, 15}, { 0x1737, 15}, { 0x0003, 5}, { 0x0011, 7},
1314 { 0x00C4, 8}, { 0x004B, 10}, { 0x00B4, 11}, { 0x07D4, 11}, { 0x0345, 12}, { 0x02D7, 13},
1315 { 0x07BF, 13}, { 0x0938, 14}, { 0x0BBB, 14}, { 0x095E, 15}, { 0x0013, 5}, { 0x0078, 7},
1316 { 0x0069, 9}, { 0x0232, 10}, { 0x0461, 11}, { 0x03EC, 12}, { 0x0520, 13}, { 0x1F2A, 13},
1317 { 0x3E50, 14}, { 0x3E51, 14}, { 0x1486, 15}, { 0x000C, 6}, { 0x0024, 9}, { 0x0094, 11},
1318 { 0x08C0, 12}, { 0x0F09, 14}, { 0x1EF0, 15}, { 0x003D, 6}, { 0x0053, 9}, { 0x01A0, 11},
1319 { 0x02D6, 13}, { 0x0F08, 14}, { 0x0013, 7}, { 0x007C, 9}, { 0x07C1, 11}, { 0x04AC, 14},
1320 { 0x001B, 7}, { 0x00A0, 10}, { 0x0344, 12}, { 0x0F79, 14}, { 0x0079, 7}, { 0x03E1, 10},
1321 { 0x02D4, 13}, { 0x2306, 14}, { 0x0021, 8}, { 0x023C, 10}, { 0x0FAE, 12}, { 0x23DE, 14},
1322 { 0x0035, 8}, { 0x0175, 11}, { 0x07B3, 13}, { 0x00C5, 8}, { 0x0174, 11}, { 0x0785, 13},
1323 { 0x0048, 9}, { 0x01A3, 11}, { 0x049E, 13}, { 0x002C, 9}, { 0x00FA, 10}, { 0x07D6, 11},
1324 { 0x0092, 10}, { 0x05CC, 13}, { 0x1EF1, 15}, { 0x00A3, 10}, { 0x03ED, 12}, { 0x093E, 14},
1325 { 0x01E2, 11}, { 0x1273, 15}, { 0x07C4, 11}, { 0x1487, 15}, { 0x0291, 12}, { 0x0293, 12},
1326 { 0x0F8A, 12}, { 0x0509, 13}, { 0x0508, 13}, { 0x078D, 13}, { 0x07BE, 13}, { 0x078C, 13},
1327 { 0x04AE, 14}, { 0x0BBA, 14}, { 0x2307, 14}, { 0x0B9A, 14}, { 0x1736, 15}, { 0x000E, 4},
1328 { 0x0045, 7}, { 0x01F3, 9}, { 0x047A, 11}, { 0x05DC, 13}, { 0x23DF, 14}, { 0x0019, 5},
1329 { 0x0028, 9}, { 0x0176, 11}, { 0x049D, 13}, { 0x23DD, 14}, { 0x0030, 6}, { 0x00A2, 10},
1330 { 0x02EF, 12}, { 0x05B8, 14}, { 0x003F, 6}, { 0x00A5, 10}, { 0x03DB, 12}, { 0x093F, 14},
1331 { 0x0044, 7}, { 0x07CB, 11}, { 0x095F, 15}, { 0x0063, 7}, { 0x03C3, 12}, { 0x0015, 8},
1332 { 0x08F6, 12}, { 0x0017, 8}, { 0x0498, 13}, { 0x002C, 8}, { 0x07B2, 13}, { 0x002F, 8},
1333 { 0x1F54, 13}, { 0x008D, 8}, { 0x07BD, 13}, { 0x008E, 8}, { 0x1182, 13}, { 0x00FB, 8},
1334 { 0x050B, 13}, { 0x002D, 8}, { 0x07C0, 11}, { 0x0079, 9}, { 0x1F5F, 13}, { 0x007A, 9},
1335 { 0x1F56, 13}, { 0x0231, 10}, { 0x03E4, 10}, { 0x01A1, 11}, { 0x0143, 11}, { 0x01F7, 11},
1336 { 0x016F, 12}, { 0x0292, 12}, { 0x02E7, 12}, { 0x016C, 12}, { 0x016D, 12}, { 0x03DC, 12},
1337 { 0x0F8B, 12}, { 0x0499, 13}, { 0x03D8, 12}, { 0x078E, 13}, { 0x02D5, 13}, { 0x1F5E, 13},
1338 { 0x1F2B, 13}, { 0x078F, 13}, { 0x04AD, 14}, { 0x3EAF, 14}, { 0x23DC, 14}, { 0x004A, 9}
1341 { 0x0000, 3}, { 0x0003, 4}, { 0x000B, 5}, { 0x0014, 6}, { 0x003F, 6}, { 0x005D, 7},
1342 { 0x00A2, 8}, { 0x00AC, 9}, { 0x016E, 9}, { 0x020A, 10}, { 0x02E2, 10}, { 0x0432, 11},
1343 { 0x05C9, 11}, { 0x0827, 12}, { 0x0B54, 12}, { 0x04E6, 13}, { 0x105F, 13}, { 0x172A, 13},
1344 { 0x20B2, 14}, { 0x2D4E, 14}, { 0x39F0, 14}, { 0x4175, 15}, { 0x5A9E, 15}, { 0x0004, 4},
1345 { 0x001E, 5}, { 0x0042, 7}, { 0x00B6, 8}, { 0x0173, 9}, { 0x0395, 10}, { 0x072E, 11},
1346 { 0x0B94, 12}, { 0x16A4, 13}, { 0x20B3, 14}, { 0x2E45, 14}, { 0x0005, 5}, { 0x0040, 7},
1347 { 0x0049, 9}, { 0x028F, 10}, { 0x05CB, 11}, { 0x048A, 13}, { 0x09DD, 14}, { 0x73E2, 15},
1348 { 0x0018, 5}, { 0x0025, 8}, { 0x008A, 10}, { 0x051B, 11}, { 0x0E5F, 12}, { 0x09C9, 14},
1349 { 0x139C, 15}, { 0x0029, 6}, { 0x004F, 9}, { 0x0412, 11}, { 0x048D, 13}, { 0x2E41, 14},
1350 { 0x0038, 6}, { 0x010E, 9}, { 0x05A8, 11}, { 0x105C, 13}, { 0x39F2, 14}, { 0x0058, 7},
1351 { 0x021F, 10}, { 0x0E7E, 12}, { 0x39FF, 14}, { 0x0023, 8}, { 0x02E3, 10}, { 0x04E5, 13},
1352 { 0x2E40, 14}, { 0x00A1, 8}, { 0x05BE, 11}, { 0x09C8, 14}, { 0x0083, 8}, { 0x013A, 11},
1353 { 0x1721, 13}, { 0x0044, 9}, { 0x0276, 12}, { 0x39F6, 14}, { 0x008B, 10}, { 0x04EF, 13},
1354 { 0x5A9B, 15}, { 0x0208, 10}, { 0x1CFE, 13}, { 0x0399, 10}, { 0x1CB4, 13}, { 0x039E, 10},
1355 { 0x39F3, 14}, { 0x05AB, 11}, { 0x73E3, 15}, { 0x0737, 11}, { 0x5A9F, 15}, { 0x082D, 12},
1356 { 0x0E69, 12}, { 0x0E68, 12}, { 0x0433, 11}, { 0x0B7B, 12}, { 0x2DF8, 14}, { 0x2E56, 14},
1357 { 0x2E57, 14}, { 0x39F7, 14}, { 0x51A5, 15}, { 0x0003, 3}, { 0x002A, 6}, { 0x00E4, 8},
1358 { 0x028E, 10}, { 0x0735, 11}, { 0x1058, 13}, { 0x1CFA, 13}, { 0x2DF9, 14}, { 0x4174, 15},
1359 { 0x0009, 4}, { 0x0054, 8}, { 0x0398, 10}, { 0x048B, 13}, { 0x139D, 15}, { 0x000D, 4},
1360 { 0x00AD, 9}, { 0x0826, 12}, { 0x2D4C, 14}, { 0x0011, 5}, { 0x016B, 9}, { 0x0B7F, 12},
1361 { 0x51A4, 15}, { 0x0019, 5}, { 0x021B, 10}, { 0x16FD, 13}, { 0x001D, 5}, { 0x0394, 10},
1362 { 0x28D3, 14}, { 0x002B, 6}, { 0x05BC, 11}, { 0x5A9A, 15}, { 0x002F, 6}, { 0x0247, 12},
1363 { 0x0010, 7}, { 0x0A35, 12}, { 0x003E, 6}, { 0x0B7A, 12}, { 0x0059, 7}, { 0x105E, 13},
1364 { 0x0026, 8}, { 0x09CF, 14}, { 0x0055, 8}, { 0x1CB5, 13}, { 0x0057, 8}, { 0x0E5B, 12},
1365 { 0x00A0, 8}, { 0x1468, 13}, { 0x0170, 9}, { 0x0090, 10}, { 0x01CE, 9}, { 0x021A, 10},
1366 { 0x0218, 10}, { 0x0168, 9}, { 0x021E, 10}, { 0x0244, 12}, { 0x0736, 11}, { 0x0138, 11},
1367 { 0x0519, 11}, { 0x0E5E, 12}, { 0x072C, 11}, { 0x0B55, 12}, { 0x09DC, 14}, { 0x20BB, 14},
1368 { 0x048C, 13}, { 0x1723, 13}, { 0x2E44, 14}, { 0x16A5, 13}, { 0x0518, 11}, { 0x39FE, 14},
1372 { 0x0001, 2}, { 0x0006, 3}, { 0x000F, 4}, { 0x0016, 5}, { 0x0020, 6}, { 0x0018, 7},
1373 { 0x0008, 8}, { 0x009A, 8}, { 0x0056, 9}, { 0x013E, 9}, { 0x00F0, 10}, { 0x03A5, 10},
1374 { 0x0077, 11}, { 0x01EF, 11}, { 0x009A, 12}, { 0x005D, 13}, { 0x0001, 4}, { 0x0011, 5},
1375 { 0x0002, 7}, { 0x000B, 8}, { 0x0012, 9}, { 0x01D6, 9}, { 0x027E, 10}, { 0x0191, 11},
1376 { 0x00EA, 12}, { 0x03DC, 12}, { 0x013B, 13}, { 0x0004, 5}, { 0x0014, 7}, { 0x009E, 8},
1377 { 0x0009, 10}, { 0x01AC, 11}, { 0x01E2, 11}, { 0x03CA, 12}, { 0x005F, 13}, { 0x0017, 5},
1378 { 0x004E, 7}, { 0x005E, 9}, { 0x00F3, 10}, { 0x01AD, 11}, { 0x00EC, 12}, { 0x05F0, 13},
1379 { 0x000E, 6}, { 0x00E1, 8}, { 0x03A4, 10}, { 0x009C, 12}, { 0x013D, 13}, { 0x003B, 6},
1380 { 0x001C, 9}, { 0x0014, 11}, { 0x09BE, 12}, { 0x0006, 7}, { 0x007A, 9}, { 0x0190, 11},
1381 { 0x0137, 13}, { 0x001B, 7}, { 0x0008, 10}, { 0x075C, 11}, { 0x0071, 7}, { 0x00D7, 10},
1382 { 0x09BF, 12}, { 0x0007, 8}, { 0x00AF, 10}, { 0x04CC, 11}, { 0x0034, 8}, { 0x0265, 10},
1383 { 0x009F, 12}, { 0x00E0, 8}, { 0x0016, 11}, { 0x0327, 12}, { 0x0015, 9}, { 0x017D, 11},
1384 { 0x0EBB, 12}, { 0x0014, 9}, { 0x00F6, 10}, { 0x01E4, 11}, { 0x00CB, 10}, { 0x099D, 12},
1385 { 0x00CA, 10}, { 0x02FC, 12}, { 0x017F, 11}, { 0x04CD, 11}, { 0x02FD, 12}, { 0x04FE, 11},
1386 { 0x013A, 13}, { 0x000A, 4}, { 0x0042, 7}, { 0x01D3, 9}, { 0x04DD, 11}, { 0x0012, 5},
1387 { 0x00E8, 8}, { 0x004C, 11}, { 0x0136, 13}, { 0x0039, 6}, { 0x0264, 10}, { 0x0EBA, 12},
1388 { 0x0000, 7}, { 0x00AE, 10}, { 0x099C, 12}, { 0x001F, 7}, { 0x04DE, 11}, { 0x0043, 7},
1389 { 0x04DC, 11}, { 0x0003, 8}, { 0x03CB, 12}, { 0x0006, 8}, { 0x099E, 12}, { 0x002A, 8},
1390 { 0x05F1, 13}, { 0x000F, 8}, { 0x09FE, 12}, { 0x0033, 8}, { 0x09FF, 12}, { 0x0098, 8},
1391 { 0x099F, 12}, { 0x00EA, 8}, { 0x013C, 13}, { 0x002E, 8}, { 0x0192, 11}, { 0x0136, 9},
1392 { 0x006A, 9}, { 0x0015, 11}, { 0x03AF, 10}, { 0x01E3, 11}, { 0x0074, 11}, { 0x00EB, 12},
1393 { 0x02F9, 12}, { 0x005C, 13}, { 0x00ED, 12}, { 0x03DD, 12}, { 0x0326, 12}, { 0x005E, 13},
1397 { 0x0004, 3}, { 0x0014, 5}, { 0x0017, 7}, { 0x007F, 8}, { 0x0154, 9}, { 0x01F2, 10},
1398 { 0x00BF, 11}, { 0x0065, 12}, { 0x0AAA, 12}, { 0x0630, 13}, { 0x1597, 13}, { 0x03B7, 14},
1399 { 0x2B22, 14}, { 0x0BE6, 15}, { 0x000B, 4}, { 0x0037, 7}, { 0x0062, 9}, { 0x0007, 11},
1400 { 0x0166, 12}, { 0x00CE, 13}, { 0x1590, 13}, { 0x05F6, 14}, { 0x0BE7, 15}, { 0x0007, 5},
1401 { 0x006D, 8}, { 0x0003, 11}, { 0x031F, 12}, { 0x05F2, 14}, { 0x0002, 6}, { 0x0061, 9},
1402 { 0x0055, 12}, { 0x01DF, 14}, { 0x001A, 6}, { 0x001E, 10}, { 0x0AC9, 12}, { 0x2B23, 14},
1403 { 0x001E, 6}, { 0x001F, 10}, { 0x0AC3, 12}, { 0x2B2B, 14}, { 0x0006, 7}, { 0x0004, 11},
1404 { 0x02F8, 13}, { 0x0019, 7}, { 0x0006, 11}, { 0x063D, 13}, { 0x0057, 7}, { 0x0182, 11},
1405 { 0x2AA2, 14}, { 0x0004, 8}, { 0x0180, 11}, { 0x059C, 14}, { 0x007D, 8}, { 0x0164, 12},
1406 { 0x076D, 15}, { 0x0002, 9}, { 0x018D, 11}, { 0x1581, 13}, { 0x00AD, 8}, { 0x0060, 12},
1407 { 0x0C67, 14}, { 0x001C, 9}, { 0x00EE, 13}, { 0x0003, 9}, { 0x02CF, 13}, { 0x00D9, 9},
1408 { 0x1580, 13}, { 0x0002, 11}, { 0x0183, 11}, { 0x0057, 12}, { 0x0061, 12}, { 0x0031, 11},
1409 { 0x0066, 12}, { 0x0631, 13}, { 0x0632, 13}, { 0x00AC, 13}, { 0x031D, 12}, { 0x0076, 12},
1410 { 0x003A, 11}, { 0x0165, 12}, { 0x0C66, 14}, { 0x0003, 2}, { 0x0054, 7}, { 0x02AB, 10},
1411 { 0x0016, 13}, { 0x05F7, 14}, { 0x0005, 4}, { 0x00F8, 9}, { 0x0AA9, 12}, { 0x005F, 15},
1412 { 0x0004, 4}, { 0x001C, 10}, { 0x1550, 13}, { 0x0004, 5}, { 0x0077, 11}, { 0x076C, 15},
1413 { 0x000E, 5}, { 0x000A, 12}, { 0x000C, 5}, { 0x0562, 11}, { 0x0004, 6}, { 0x031C, 12},
1414 { 0x0006, 6}, { 0x00C8, 13}, { 0x000D, 6}, { 0x01DA, 13}, { 0x0007, 6}, { 0x00C9, 13},
1415 { 0x0001, 7}, { 0x002E, 14}, { 0x0014, 7}, { 0x1596, 13}, { 0x000A, 7}, { 0x0AC2, 12},
1416 { 0x0016, 7}, { 0x015B, 14}, { 0x0015, 7}, { 0x015A, 14}, { 0x000F, 8}, { 0x005E, 15},
1417 { 0x007E, 8}, { 0x00AB, 8}, { 0x002D, 9}, { 0x00D8, 9}, { 0x000B, 9}, { 0x0014, 10},
1418 { 0x02B3, 10}, { 0x01F3, 10}, { 0x003A, 10}, { 0x0000, 10}, { 0x0058, 10}, { 0x002E, 9},
1419 { 0x005E, 10}, { 0x0563, 11}, { 0x00EC, 12}, { 0x0054, 12}, { 0x0AC1, 12}, { 0x1556, 13},
1420 { 0x02FA, 13}, { 0x0181, 11}, { 0x1557, 13}, { 0x059D, 14}, { 0x2AA3, 14}, { 0x2B2A, 14},
1421 { 0x01DE, 14}, { 0x063C, 13}, { 0x00CF, 13}, { 0x1594, 13}, { 0x000D, 9}
1424 { 0x0002, 2}, { 0x0006, 3}, { 0x000F, 4}, { 0x000D, 5}, { 0x000C, 5}, { 0x0015, 6},
1425 { 0x0013, 6}, { 0x0012, 6}, { 0x0017, 7}, { 0x001F, 8}, { 0x001E, 8}, { 0x001D, 8},
1426 { 0x0025, 9}, { 0x0024, 9}, { 0x0023, 9}, { 0x0021, 9}, { 0x0021, 10}, { 0x0020, 10},
1427 { 0x000F, 10}, { 0x000E, 10}, { 0x0007, 11}, { 0x0006, 11}, { 0x0020, 11}, { 0x0021, 11},
1428 { 0x0050, 12}, { 0x0051, 12}, { 0x0052, 12}, { 0x000E, 4}, { 0x0014, 6}, { 0x0016, 7},
1429 { 0x001C, 8}, { 0x0020, 9}, { 0x001F, 9}, { 0x000D, 10}, { 0x0022, 11}, { 0x0053, 12},
1430 { 0x0055, 12}, { 0x000B, 5}, { 0x0015, 7}, { 0x001E, 9}, { 0x000C, 10}, { 0x0056, 12},
1431 { 0x0011, 6}, { 0x001B, 8}, { 0x001D, 9}, { 0x000B, 10}, { 0x0010, 6}, { 0x0022, 9},
1432 { 0x000A, 10}, { 0x000D, 6}, { 0x001C, 9}, { 0x0008, 10}, { 0x0012, 7}, { 0x001B, 9},
1433 { 0x0054, 12}, { 0x0014, 7}, { 0x001A, 9}, { 0x0057, 12}, { 0x0019, 8}, { 0x0009, 10},
1434 { 0x0018, 8}, { 0x0023, 11}, { 0x0017, 8}, { 0x0019, 9}, { 0x0018, 9}, { 0x0007, 10},
1435 { 0x0058, 12}, { 0x0007, 4}, { 0x000C, 6}, { 0x0016, 8}, { 0x0017, 9}, { 0x0006, 10},
1436 { 0x0005, 11}, { 0x0004, 11}, { 0x0059, 12}, { 0x000F, 6}, { 0x0016, 9}, { 0x0005, 10},
1437 { 0x000E, 6}, { 0x0004, 10}, { 0x0011, 7}, { 0x0024, 11}, { 0x0010, 7}, { 0x0025, 11},
1438 { 0x0013, 7}, { 0x005A, 12}, { 0x0015, 8}, { 0x005B, 12}, { 0x0014, 8}, { 0x0013, 8},
1439 { 0x001A, 8}, { 0x0015, 9}, { 0x0014, 9}, { 0x0013, 9}, { 0x0012, 9}, { 0x0011, 9},
1440 { 0x0026, 11}, { 0x0027, 11}, { 0x005C, 12}, { 0x005D, 12}, { 0x005E, 12}, { 0x005F, 12},
1444 { 0x0002, 2}, { 0x000F, 4}, { 0x0015, 6}, { 0x0017, 7}, { 0x001F, 8}, { 0x0025, 9},
1445 { 0x0024, 9}, { 0x0021, 10}, { 0x0020, 10}, { 0x0007, 11}, { 0x0006, 11}, { 0x0020, 11},
1446 { 0x0006, 3}, { 0x0014, 6}, { 0x001E, 8}, { 0x000F, 10}, { 0x0021, 11}, { 0x0050, 12},
1447 { 0x000E, 4}, { 0x001D, 8}, { 0x000E, 10}, { 0x0051, 12}, { 0x000D, 5}, { 0x0023, 9},
1448 { 0x000D, 10}, { 0x000C, 5}, { 0x0022, 9}, { 0x0052, 12}, { 0x000B, 5}, { 0x000C, 10},
1449 { 0x0053, 12}, { 0x0013, 6}, { 0x000B, 10}, { 0x0054, 12}, { 0x0012, 6}, { 0x000A, 10},
1450 { 0x0011, 6}, { 0x0009, 10}, { 0x0010, 6}, { 0x0008, 10}, { 0x0016, 7}, { 0x0055, 12},
1451 { 0x0015, 7}, { 0x0014, 7}, { 0x001C, 8}, { 0x001B, 8}, { 0x0021, 9}, { 0x0020, 9},
1452 { 0x001F, 9}, { 0x001E, 9}, { 0x001D, 9}, { 0x001C, 9}, { 0x001B, 9}, { 0x001A, 9},
1453 { 0x0022, 11}, { 0x0023, 11}, { 0x0056, 12}, { 0x0057, 12}, { 0x0007, 4}, { 0x0019, 9},
1454 { 0x0005, 11}, { 0x000F, 6}, { 0x0004, 11}, { 0x000E, 6}, { 0x000D, 6}, { 0x000C, 6},
1455 { 0x0013, 7}, { 0x0012, 7}, { 0x0011, 7}, { 0x0010, 7}, { 0x001A, 8}, { 0x0019, 8},
1456 { 0x0018, 8}, { 0x0017, 8}, { 0x0016, 8}, { 0x0015, 8}, { 0x0014, 8}, { 0x0013, 8},
1457 { 0x0018, 9}, { 0x0017, 9}, { 0x0016, 9}, { 0x0015, 9}, { 0x0014, 9}, { 0x0013, 9},
1458 { 0x0012, 9}, { 0x0011, 9}, { 0x0007, 10}, { 0x0006, 10}, { 0x0005, 10}, { 0x0004, 10},
1459 { 0x0024, 11}, { 0x0025, 11}, { 0x0026, 11}, { 0x0027, 11}, { 0x0058, 12}, { 0x0059, 12},
1460 { 0x005A, 12}, { 0x005B, 12}, { 0x005C, 12}, { 0x005D, 12}, { 0x005E, 12}, { 0x005F, 12},
1464 { 0x0000, 2}, { 0x0003, 3}, { 0x000D, 4}, { 0x0005, 4}, { 0x001C, 5}, { 0x0016, 5},
1465 { 0x003F, 6}, { 0x003A, 6}, { 0x002E, 6}, { 0x0022, 6}, { 0x007B, 7}, { 0x0067, 7},
1466 { 0x005F, 7}, { 0x0047, 7}, { 0x0026, 7}, { 0x00EF, 8}, { 0x00CD, 8}, { 0x00C1, 8},
1467 { 0x00A9, 8}, { 0x004F, 8}, { 0x01F2, 9}, { 0x01DD, 9}, { 0x0199, 9}, { 0x0185, 9},
1468 { 0x015D, 9}, { 0x011B, 9}, { 0x03EF, 10}, { 0x03E1, 10}, { 0x03C8, 10}, { 0x0331, 10},
1469 { 0x0303, 10}, { 0x02F1, 10}, { 0x02A0, 10}, { 0x0233, 10}, { 0x0126, 10}, { 0x07C0, 11},
1470 { 0x076F, 11}, { 0x076C, 11}, { 0x0661, 11}, { 0x0604, 11}, { 0x0572, 11}, { 0x0551, 11},
1471 { 0x046A, 11}, { 0x0274, 11}, { 0x0F27, 12}, { 0x0F24, 12}, { 0x0EDB, 12}, { 0x0C8E, 12},
1472 { 0x0C0B, 12}, { 0x0C0A, 12}, { 0x0AE3, 12}, { 0x08D6, 12}, { 0x0490, 12}, { 0x0495, 12},
1473 { 0x1F19, 13}, { 0x1DB5, 13}, { 0x0009, 4}, { 0x0010, 5}, { 0x0029, 6}, { 0x0062, 7},
1474 { 0x00F3, 8}, { 0x00AD, 8}, { 0x01E5, 9}, { 0x0179, 9}, { 0x009C, 9}, { 0x03B1, 10},
1475 { 0x02AE, 10}, { 0x0127, 10}, { 0x076E, 11}, { 0x0570, 11}, { 0x0275, 11}, { 0x0F25, 12},
1476 { 0x0EC0, 12}, { 0x0AA0, 12}, { 0x08D7, 12}, { 0x1E4C, 13}, { 0x0008, 5}, { 0x0063, 7},
1477 { 0x00AF, 8}, { 0x017B, 9}, { 0x03B3, 10}, { 0x07DD, 11}, { 0x0640, 11}, { 0x0F8D, 12},
1478 { 0x0BC1, 12}, { 0x0491, 12}, { 0x0028, 6}, { 0x00C3, 8}, { 0x0151, 9}, { 0x02A1, 10},
1479 { 0x0573, 11}, { 0x0EC3, 12}, { 0x1F35, 13}, { 0x0065, 7}, { 0x01DA, 9}, { 0x02AF, 10},
1480 { 0x0277, 11}, { 0x08C9, 12}, { 0x1781, 13}, { 0x0025, 7}, { 0x0118, 9}, { 0x0646, 11},
1481 { 0x0AA6, 12}, { 0x1780, 13}, { 0x00C9, 8}, { 0x0321, 10}, { 0x0F9B, 12}, { 0x191E, 13},
1482 { 0x0048, 8}, { 0x07CC, 11}, { 0x0AA1, 12}, { 0x0180, 9}, { 0x0465, 11}, { 0x1905, 13},
1483 { 0x03E2, 10}, { 0x0EC1, 12}, { 0x3C9B, 14}, { 0x02F4, 10}, { 0x08C8, 12}, { 0x07C1, 11},
1484 { 0x0928, 13}, { 0x05E1, 11}, { 0x320D, 14}, { 0x0EC2, 12}, { 0x6418, 15}, { 0x1F34, 13},
1485 { 0x0078, 7}, { 0x0155, 9}, { 0x0552, 11}, { 0x191F, 13}, { 0x00FA, 8}, { 0x07DC, 11},
1486 { 0x1907, 13}, { 0x00AC, 8}, { 0x0249, 11}, { 0x13B1, 14}, { 0x01F6, 9}, { 0x0AE2, 12},
1487 { 0x01DC, 9}, { 0x04ED, 12}, { 0x0184, 9}, { 0x1904, 13}, { 0x0156, 9}, { 0x09D9, 13},
1488 { 0x03E7, 10}, { 0x0929, 13}, { 0x03B2, 10}, { 0x3B68, 14}, { 0x02F5, 10}, { 0x13B0, 14},
1489 { 0x0322, 10}, { 0x3B69, 14}, { 0x0234, 10}, { 0x7935, 15}, { 0x07C7, 11}, { 0xC833, 16},
1490 { 0x0660, 11}, { 0x7934, 15}, { 0x024B, 11}, { 0xC832, 16}, { 0x0AA7, 12}, { 0x1F18, 13},
1494 { 0x0002, 2}, { 0x0000, 3}, { 0x001E, 5}, { 0x0004, 5}, { 0x0012, 6}, { 0x0070, 7},
1495 { 0x001A, 7}, { 0x005F, 8}, { 0x0047, 8}, { 0x01D3, 9}, { 0x00B5, 9}, { 0x0057, 9},
1496 { 0x03B5, 10}, { 0x016D, 10}, { 0x0162, 10}, { 0x07CE, 11}, { 0x0719, 11}, { 0x0691, 11},
1497 { 0x02C6, 11}, { 0x0156, 11}, { 0x0F92, 12}, { 0x0D2E, 12}, { 0x0D20, 12}, { 0x059E, 12},
1498 { 0x0468, 12}, { 0x02A6, 12}, { 0x1DA2, 13}, { 0x1C60, 13}, { 0x1A43, 13}, { 0x0B1D, 13},
1499 { 0x08C0, 13}, { 0x055D, 13}, { 0x0003, 3}, { 0x000A, 5}, { 0x0077, 7}, { 0x00E5, 8},
1500 { 0x01D9, 9}, { 0x03E5, 10}, { 0x0166, 10}, { 0x0694, 11}, { 0x0152, 11}, { 0x059F, 12},
1501 { 0x1F3C, 13}, { 0x1A4B, 13}, { 0x055E, 13}, { 0x000C, 4}, { 0x007D, 7}, { 0x0044, 8},
1502 { 0x03E0, 10}, { 0x0769, 11}, { 0x0E31, 12}, { 0x1F26, 13}, { 0x055C, 13}, { 0x001B, 5},
1503 { 0x00E2, 8}, { 0x03A5, 10}, { 0x02C9, 11}, { 0x1F23, 13}, { 0x3B47, 14}, { 0x0007, 5},
1504 { 0x01D8, 9}, { 0x02D8, 11}, { 0x1F27, 13}, { 0x3494, 14}, { 0x0035, 6}, { 0x03E1, 10},
1505 { 0x059C, 12}, { 0x38C3, 14}, { 0x000C, 6}, { 0x0165, 10}, { 0x1D23, 13}, { 0x1638, 14},
1506 { 0x0068, 7}, { 0x0693, 11}, { 0x3A45, 14}, { 0x0020, 7}, { 0x0F90, 12}, { 0x7CF6, 15},
1507 { 0x00E8, 8}, { 0x058F, 12}, { 0x2CEF, 15}, { 0x0045, 8}, { 0x0B3A, 13}, { 0x01F1, 9},
1508 { 0x3B46, 14}, { 0x01A7, 9}, { 0x1676, 14}, { 0x0056, 9}, { 0x692A, 15}, { 0x038D, 10},
1509 { 0xE309, 16}, { 0x00AA, 10}, { 0x1C611, 17}, { 0x02DF, 11}, { 0xB3B9, 17}, { 0x02C8, 11},
1510 { 0x38C20, 18}, { 0x01B0, 11}, { 0x16390, 18}, { 0x0F9F, 12}, { 0x16771, 18}, { 0x0ED0, 12},
1511 { 0x71843, 19}, { 0x0D2A, 12}, { 0xF9E8C, 20}, { 0x0461, 12}, { 0xF9E8E, 20}, { 0x0B67, 13},
1512 { 0x055F, 13}, { 0x003F, 6}, { 0x006D, 9}, { 0x0E90, 12}, { 0x054E, 13}, { 0x0013, 6},
1513 { 0x0119, 10}, { 0x0B66, 13}, { 0x000B, 6}, { 0x0235, 11}, { 0x7CF5, 15}, { 0x0075, 7},
1514 { 0x0D24, 12}, { 0xF9E9, 16}, { 0x002E, 7}, { 0x1F22, 13}, { 0x0021, 7}, { 0x054F, 13},
1515 { 0x0014, 7}, { 0x3A44, 14}, { 0x00E4, 8}, { 0x7CF7, 15}, { 0x005E, 8}, { 0x7185, 15},
1516 { 0x0037, 8}, { 0x2C73, 15}, { 0x01DB, 9}, { 0x59DD, 16}, { 0x01C7, 9}, { 0x692B, 15},
1517 { 0x01A6, 9}, { 0x58E5, 16}, { 0x00B4, 9}, { 0x1F3D0, 17}, { 0x00B0, 9}, { 0xB1C9, 17},
1518 { 0x03E6, 10}, { 0x16770, 18}, { 0x016E, 10}, { 0x3E7A2, 18}, { 0x011B, 10}, { 0xF9E8D, 20},
1519 { 0x00D9, 10}, { 0xF9E8F, 20}, { 0x00A8, 10}, { 0x2C723, 19}, { 0x0749, 11}, { 0xE3084, 20},
1520 { 0x0696, 11}, { 0x58E45, 20}, { 0x02DE, 11}, { 0xB1C88, 21}, { 0x0231, 11}, { 0x1C610A, 21},
1521 { 0x01B1, 11}, { 0x71842D, 23}, { 0x0D2B, 12}, { 0x38C217, 22}, { 0x0D2F, 12}, { 0x163913, 22},
1522 { 0x05B2, 12}, { 0x163912, 22}, { 0x0469, 12}, { 0x71842C, 23}, { 0x1A42, 13}, { 0x08C1, 13},
1527 static const uint16_t vlc_offs[] = {
1528 0, 520, 552, 616, 1128, 1160, 1224, 1740, 1772, 1836, 1900, 2436,
1529 2986, 3050, 3610, 4154, 4218, 4746, 5326, 5390, 5902, 6554, 7658, 8342,
1530 9304, 9988, 10630, 11234, 12174, 13006, 13560, 14232, 14786, 15432, 16350, 17522,
1531 20372, 21818, 22330, 22394, 23166, 23678, 23742, 24820, 25332, 25396, 26460, 26980,
1532 27048, 27592, 27600, 27608, 27616, 27624, 28224, 28258, 28290, 28802, 28834, 28866,
1533 29378, 29412, 29444, 29960, 29994, 30026, 30538, 30572, 30604, 31120, 31154, 31186,
1534 31714, 31746, 31778, 32306, 32340, 32372
1538 * Init VC-1 specific tables and VC1Context members
1539 * @param v The VC1Context to initialize
1542 int ff_vc1_init_common(VC1Context *v)
1544 static int done = 0;
1546 static VLC_TYPE vlc_table[32372][2];
1548 v->hrd_rate = v->hrd_buffer = NULL;
1552 INIT_VLC_STATIC(&ff_vc1_bfraction_vlc, VC1_BFRACTION_VLC_BITS, 23,
1553 ff_vc1_bfraction_bits, 1, 1,
1554 ff_vc1_bfraction_codes, 1, 1, 1 << VC1_BFRACTION_VLC_BITS);
1555 INIT_VLC_STATIC(&ff_vc1_norm2_vlc, VC1_NORM2_VLC_BITS, 4,
1556 ff_vc1_norm2_bits, 1, 1,
1557 ff_vc1_norm2_codes, 1, 1, 1 << VC1_NORM2_VLC_BITS);
1558 INIT_VLC_STATIC(&ff_vc1_norm6_vlc, VC1_NORM6_VLC_BITS, 64,
1559 ff_vc1_norm6_bits, 1, 1,
1560 ff_vc1_norm6_codes, 2, 2, 556);
1561 INIT_VLC_STATIC(&ff_vc1_imode_vlc, VC1_IMODE_VLC_BITS, 7,
1562 ff_vc1_imode_bits, 1, 1,
1563 ff_vc1_imode_codes, 1, 1, 1 << VC1_IMODE_VLC_BITS);
1564 for (i = 0; i < 3; i++) {
1565 ff_vc1_ttmb_vlc[i].table = &vlc_table[vlc_offs[i * 3 + 0]];
1566 ff_vc1_ttmb_vlc[i].table_allocated = vlc_offs[i * 3 + 1] - vlc_offs[i * 3 + 0];
1567 init_vlc(&ff_vc1_ttmb_vlc[i], VC1_TTMB_VLC_BITS, 16,
1568 ff_vc1_ttmb_bits[i], 1, 1,
1569 ff_vc1_ttmb_codes[i], 2, 2, INIT_VLC_USE_NEW_STATIC);
1570 ff_vc1_ttblk_vlc[i].table = &vlc_table[vlc_offs[i * 3 + 1]];
1571 ff_vc1_ttblk_vlc[i].table_allocated = vlc_offs[i * 3 + 2] - vlc_offs[i * 3 + 1];
1572 init_vlc(&ff_vc1_ttblk_vlc[i], VC1_TTBLK_VLC_BITS, 8,
1573 ff_vc1_ttblk_bits[i], 1, 1,
1574 ff_vc1_ttblk_codes[i], 1, 1, INIT_VLC_USE_NEW_STATIC);
1575 ff_vc1_subblkpat_vlc[i].table = &vlc_table[vlc_offs[i * 3 + 2]];
1576 ff_vc1_subblkpat_vlc[i].table_allocated = vlc_offs[i * 3 + 3] - vlc_offs[i * 3 + 2];
1577 init_vlc(&ff_vc1_subblkpat_vlc[i], VC1_SUBBLKPAT_VLC_BITS, 15,
1578 ff_vc1_subblkpat_bits[i], 1, 1,
1579 ff_vc1_subblkpat_codes[i], 1, 1, INIT_VLC_USE_NEW_STATIC);
1581 for (i = 0; i < 4; i++) {
1582 ff_vc1_4mv_block_pattern_vlc[i].table = &vlc_table[vlc_offs[i * 3 + 9]];
1583 ff_vc1_4mv_block_pattern_vlc[i].table_allocated = vlc_offs[i * 3 + 10] - vlc_offs[i * 3 + 9];
1584 init_vlc(&ff_vc1_4mv_block_pattern_vlc[i], VC1_4MV_BLOCK_PATTERN_VLC_BITS, 16,
1585 ff_vc1_4mv_block_pattern_bits[i], 1, 1,
1586 ff_vc1_4mv_block_pattern_codes[i], 1, 1, INIT_VLC_USE_NEW_STATIC);
1587 ff_vc1_cbpcy_p_vlc[i].table = &vlc_table[vlc_offs[i * 3 + 10]];
1588 ff_vc1_cbpcy_p_vlc[i].table_allocated = vlc_offs[i * 3 + 11] - vlc_offs[i * 3 + 10];
1589 init_vlc(&ff_vc1_cbpcy_p_vlc[i], VC1_CBPCY_P_VLC_BITS, 64,
1590 ff_vc1_cbpcy_p_bits[i], 1, 1,
1591 ff_vc1_cbpcy_p_codes[i], 2, 2, INIT_VLC_USE_NEW_STATIC);
1592 ff_vc1_mv_diff_vlc[i].table = &vlc_table[vlc_offs[i * 3 + 11]];
1593 ff_vc1_mv_diff_vlc[i].table_allocated = vlc_offs[i * 3 + 12] - vlc_offs[i * 3 + 11];
1594 init_vlc(&ff_vc1_mv_diff_vlc[i], VC1_MV_DIFF_VLC_BITS, 73,
1595 ff_vc1_mv_diff_bits[i], 1, 1,
1596 ff_vc1_mv_diff_codes[i], 2, 2, INIT_VLC_USE_NEW_STATIC);
1598 for (i = 0; i < 8; i++) {
1599 ff_vc1_ac_coeff_table[i].table = &vlc_table[vlc_offs[i * 2 + 21]];
1600 ff_vc1_ac_coeff_table[i].table_allocated = vlc_offs[i * 2 + 22] - vlc_offs[i * 2 + 21];
1601 init_vlc(&ff_vc1_ac_coeff_table[i], AC_VLC_BITS, ff_vc1_ac_sizes[i],
1602 &vc1_ac_tables[i][0][1], 8, 4,
1603 &vc1_ac_tables[i][0][0], 8, 4, INIT_VLC_USE_NEW_STATIC);
1604 /* initialize interlaced MVDATA tables (2-Ref) */
1605 ff_vc1_2ref_mvdata_vlc[i].table = &vlc_table[vlc_offs[i * 2 + 22]];
1606 ff_vc1_2ref_mvdata_vlc[i].table_allocated = vlc_offs[i * 2 + 23] - vlc_offs[i * 2 + 22];
1607 init_vlc(&ff_vc1_2ref_mvdata_vlc[i], VC1_2REF_MVDATA_VLC_BITS, 126,
1608 ff_vc1_2ref_mvdata_bits[i], 1, 1,
1609 ff_vc1_2ref_mvdata_codes[i], 4, 4, INIT_VLC_USE_NEW_STATIC);
1611 for (i = 0; i < 4; i++) {
1612 /* initialize 4MV MBMODE VLC tables for interlaced frame P picture */
1613 ff_vc1_intfr_4mv_mbmode_vlc[i].table = &vlc_table[vlc_offs[i * 3 + 37]];
1614 ff_vc1_intfr_4mv_mbmode_vlc[i].table_allocated = vlc_offs[i * 3 + 38] - vlc_offs[i * 3 + 37];
1615 init_vlc(&ff_vc1_intfr_4mv_mbmode_vlc[i], VC1_INTFR_4MV_MBMODE_VLC_BITS, 15,
1616 ff_vc1_intfr_4mv_mbmode_bits[i], 1, 1,
1617 ff_vc1_intfr_4mv_mbmode_codes[i], 2, 2, INIT_VLC_USE_NEW_STATIC);
1618 /* initialize NON-4MV MBMODE VLC tables for the same */
1619 ff_vc1_intfr_non4mv_mbmode_vlc[i].table = &vlc_table[vlc_offs[i * 3 + 38]];
1620 ff_vc1_intfr_non4mv_mbmode_vlc[i].table_allocated = vlc_offs[i * 3 + 39] - vlc_offs[i * 3 + 38];
1621 init_vlc(&ff_vc1_intfr_non4mv_mbmode_vlc[i], VC1_INTFR_NON4MV_MBMODE_VLC_BITS, 9,
1622 ff_vc1_intfr_non4mv_mbmode_bits[i], 1, 1,
1623 ff_vc1_intfr_non4mv_mbmode_codes[i], 1, 1, INIT_VLC_USE_NEW_STATIC);
1624 /* initialize interlaced MVDATA tables (1-Ref) */
1625 ff_vc1_1ref_mvdata_vlc[i].table = &vlc_table[vlc_offs[i * 3 + 39]];
1626 ff_vc1_1ref_mvdata_vlc[i].table_allocated = vlc_offs[i * 3 + 40] - vlc_offs[i * 3 + 39];
1627 init_vlc(&ff_vc1_1ref_mvdata_vlc[i], VC1_1REF_MVDATA_VLC_BITS, 72,
1628 ff_vc1_1ref_mvdata_bits[i], 1, 1,
1629 ff_vc1_1ref_mvdata_codes[i], 4, 4, INIT_VLC_USE_NEW_STATIC);
1631 for (i = 0; i < 4; i++) {
1632 /* Initialize 2MV Block pattern VLC tables */
1633 ff_vc1_2mv_block_pattern_vlc[i].table = &vlc_table[vlc_offs[i + 49]];
1634 ff_vc1_2mv_block_pattern_vlc[i].table_allocated = vlc_offs[i + 50] - vlc_offs[i + 49];
1635 init_vlc(&ff_vc1_2mv_block_pattern_vlc[i], VC1_2MV_BLOCK_PATTERN_VLC_BITS, 4,
1636 ff_vc1_2mv_block_pattern_bits[i], 1, 1,
1637 ff_vc1_2mv_block_pattern_codes[i], 1, 1, INIT_VLC_USE_NEW_STATIC);
1639 for (i = 0; i < 8; i++) {
1640 /* Initialize interlaced CBPCY VLC tables (Table 124 - Table 131) */
1641 ff_vc1_icbpcy_vlc[i].table = &vlc_table[vlc_offs[i * 3 + 53]];
1642 ff_vc1_icbpcy_vlc[i].table_allocated = vlc_offs[i * 3 + 54] - vlc_offs[i * 3 + 53];
1643 init_vlc(&ff_vc1_icbpcy_vlc[i], VC1_ICBPCY_VLC_BITS, 63,
1644 ff_vc1_icbpcy_p_bits[i], 1, 1,
1645 ff_vc1_icbpcy_p_codes[i], 2, 2, INIT_VLC_USE_NEW_STATIC);
1646 /* Initialize interlaced field picture MBMODE VLC tables */
1647 ff_vc1_if_mmv_mbmode_vlc[i].table = &vlc_table[vlc_offs[i * 3 + 54]];
1648 ff_vc1_if_mmv_mbmode_vlc[i].table_allocated = vlc_offs[i * 3 + 55] - vlc_offs[i * 3 + 54];
1649 init_vlc(&ff_vc1_if_mmv_mbmode_vlc[i], VC1_IF_MMV_MBMODE_VLC_BITS, 8,
1650 ff_vc1_if_mmv_mbmode_bits[i], 1, 1,
1651 ff_vc1_if_mmv_mbmode_codes[i], 1, 1, INIT_VLC_USE_NEW_STATIC);
1652 ff_vc1_if_1mv_mbmode_vlc[i].table = &vlc_table[vlc_offs[i * 3 + 55]];
1653 ff_vc1_if_1mv_mbmode_vlc[i].table_allocated = vlc_offs[i * 3 + 56] - vlc_offs[i * 3 + 55];
1654 init_vlc(&ff_vc1_if_1mv_mbmode_vlc[i], VC1_IF_1MV_MBMODE_VLC_BITS, 6,
1655 ff_vc1_if_1mv_mbmode_bits[i], 1, 1,
1656 ff_vc1_if_1mv_mbmode_codes[i], 1, 1, INIT_VLC_USE_NEW_STATIC);
1661 /* Other defaults */
1663 v->mvrange = 0; /* 7.1.1.18, p80 */