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);
906 if (v->panscanflag) {
907 avpriv_report_missing_feature(v->s.avctx, "Pan-scan");
910 if (v->p_frame_skipped) {
913 v->rnd = get_bits1(gb);
915 v->uvsamp = get_bits1(gb);
916 if(!ff_vc1_bfraction_vlc.table)
917 return 0; //parsing only, vlc tables havnt been allocated
919 if (!v->refdist_flag)
921 else if ((v->s.pict_type != AV_PICTURE_TYPE_B) && (v->s.pict_type != AV_PICTURE_TYPE_BI)) {
922 v->refdist = get_bits(gb, 2);
924 v->refdist += get_unary(gb, 0, 16);
926 if ((v->s.pict_type == AV_PICTURE_TYPE_B) || (v->s.pict_type == AV_PICTURE_TYPE_BI)) {
927 v->bfraction_lut_index = get_vlc2(gb, ff_vc1_bfraction_vlc.table, VC1_BFRACTION_VLC_BITS, 1);
928 v->bfraction = ff_vc1_bfraction_lut[v->bfraction_lut_index];
929 v->frfd = (v->bfraction * v->refdist) >> 8;
930 v->brfd = v->refdist - v->frfd - 1;
934 goto parse_common_info;
936 if (v->fcm == PROGRESSIVE) {
938 v->interpfrm = get_bits1(gb);
939 if (v->s.pict_type == AV_PICTURE_TYPE_B) {
940 v->bfraction_lut_index = get_vlc2(gb, ff_vc1_bfraction_vlc.table, VC1_BFRACTION_VLC_BITS, 1);
941 v->bfraction = ff_vc1_bfraction_lut[v->bfraction_lut_index];
942 if (v->bfraction == 0) {
943 v->s.pict_type = AV_PICTURE_TYPE_BI; /* XXX: should not happen here */
950 v->cur_field_type = !(v->tff ^ v->second_field);
951 pqindex = get_bits(gb, 5);
954 v->pqindex = pqindex;
955 if (v->quantizer_mode == QUANT_FRAME_IMPLICIT)
956 v->pq = ff_vc1_pquant_table[0][pqindex];
958 v->pq = ff_vc1_pquant_table[1][pqindex];
961 if (v->quantizer_mode == QUANT_FRAME_IMPLICIT)
962 v->pquantizer = pqindex < 9;
963 if (v->quantizer_mode == QUANT_NON_UNIFORM)
965 v->pqindex = pqindex;
967 v->halfpq = get_bits1(gb);
970 if (v->quantizer_mode == QUANT_FRAME_EXPLICIT)
971 v->pquantizer = get_bits1(gb);
973 v->postproc = get_bits(gb, 2);
975 if (v->s.pict_type == AV_PICTURE_TYPE_I || v->s.pict_type == AV_PICTURE_TYPE_P)
981 switch (v->s.pict_type) {
982 case AV_PICTURE_TYPE_I:
983 case AV_PICTURE_TYPE_BI:
984 if (v->fcm == ILACE_FRAME) { //interlace frame picture
985 status = bitplane_decoding(v->fieldtx_plane, &v->fieldtx_is_raw, v);
988 av_log(v->s.avctx, AV_LOG_DEBUG, "FIELDTX plane encoding: "
989 "Imode: %i, Invert: %i\n", status>>1, status&1);
991 status = bitplane_decoding(v->acpred_plane, &v->acpred_is_raw, v);
994 av_log(v->s.avctx, AV_LOG_DEBUG, "ACPRED plane encoding: "
995 "Imode: %i, Invert: %i\n", status>>1, status&1);
996 v->condover = CONDOVER_NONE;
997 if (v->overlap && v->pq <= 8) {
998 v->condover = decode012(gb);
999 if (v->condover == CONDOVER_SELECT) {
1000 status = bitplane_decoding(v->over_flags_plane, &v->overflg_is_raw, v);
1003 av_log(v->s.avctx, AV_LOG_DEBUG, "CONDOVER plane encoding: "
1004 "Imode: %i, Invert: %i\n", status>>1, status&1);
1008 case AV_PICTURE_TYPE_P:
1009 if (v->field_mode) {
1010 v->numref = get_bits1(gb);
1012 v->reffield = get_bits1(gb);
1013 v->ref_field_type[0] = v->reffield ^ !v->cur_field_type;
1017 v->mvrange = get_unary(gb, 0, 3);
1021 if (v->extended_dmv)
1022 v->dmvrange = get_unary(gb, 0, 3);
1025 if (v->fcm == ILACE_FRAME) { // interlaced frame picture
1026 v->fourmvswitch = get_bits1(gb);
1027 v->intcomp = get_bits1(gb);
1029 v->lumscale = get_bits(gb, 6);
1030 v->lumshift = get_bits(gb, 6);
1031 INIT_LUT(v->lumscale, v->lumshift, v->luty, v->lutuv);
1033 status = bitplane_decoding(v->s.mbskip_table, &v->skip_is_raw, v);
1034 av_log(v->s.avctx, AV_LOG_DEBUG, "SKIPMB plane encoding: "
1035 "Imode: %i, Invert: %i\n", status>>1, status&1);
1036 mbmodetab = get_bits(gb, 2);
1037 if (v->fourmvswitch)
1038 v->mbmode_vlc = &ff_vc1_intfr_4mv_mbmode_vlc[mbmodetab];
1040 v->mbmode_vlc = &ff_vc1_intfr_non4mv_mbmode_vlc[mbmodetab];
1041 imvtab = get_bits(gb, 2);
1042 v->imv_vlc = &ff_vc1_1ref_mvdata_vlc[imvtab];
1043 // interlaced p-picture cbpcy range is [1, 63]
1044 icbptab = get_bits(gb, 3);
1045 v->cbpcy_vlc = &ff_vc1_icbpcy_vlc[icbptab];
1046 twomvbptab = get_bits(gb, 2);
1047 v->twomvbp_vlc = &ff_vc1_2mv_block_pattern_vlc[twomvbptab];
1048 if (v->fourmvswitch) {
1049 fourmvbptab = get_bits(gb, 2);
1050 v->fourmvbp_vlc = &ff_vc1_4mv_block_pattern_vlc[fourmvbptab];
1054 v->k_x = v->mvrange + 9 + (v->mvrange >> 1); //k_x can be 9 10 12 13
1055 v->k_y = v->mvrange + 8; //k_y can be 8 9 10 11
1056 v->range_x = 1 << (v->k_x - 1);
1057 v->range_y = 1 << (v->k_y - 1);
1061 else if (v->pq < 13)
1065 if (v->fcm != ILACE_FRAME) {
1067 mvmode = get_unary(gb, 1, 4);
1068 lowquant = (v->pq > 12) ? 0 : 1;
1069 v->mv_mode = ff_vc1_mv_pmode_table[lowquant][mvmode];
1070 if (v->mv_mode == MV_PMODE_INTENSITY_COMP) {
1072 mvmode2 = get_unary(gb, 1, 3);
1073 v->mv_mode2 = ff_vc1_mv_pmode_table2[lowquant][mvmode2];
1075 v->intcompfield = decode210(gb);
1076 v->lumscale = get_bits(gb, 6);
1077 v->lumshift = get_bits(gb, 6);
1078 INIT_LUT(v->lumscale, v->lumshift, v->luty, v->lutuv);
1079 if ((v->field_mode) && !v->intcompfield) {
1080 v->lumscale2 = get_bits(gb, 6);
1081 v->lumshift2 = get_bits(gb, 6);
1082 INIT_LUT(v->lumscale2, v->lumshift2, v->luty2, v->lutuv2);
1086 v->qs_last = v->s.quarter_sample;
1087 if (v->mv_mode == MV_PMODE_1MV_HPEL || v->mv_mode == MV_PMODE_1MV_HPEL_BILIN)
1088 v->s.quarter_sample = 0;
1089 else if (v->mv_mode == MV_PMODE_INTENSITY_COMP) {
1090 if (v->mv_mode2 == MV_PMODE_1MV_HPEL || v->mv_mode2 == MV_PMODE_1MV_HPEL_BILIN)
1091 v->s.quarter_sample = 0;
1093 v->s.quarter_sample = 1;
1095 v->s.quarter_sample = 1;
1096 v->s.mspel = !(v->mv_mode == MV_PMODE_1MV_HPEL_BILIN
1097 || (v->mv_mode == MV_PMODE_INTENSITY_COMP
1098 && v->mv_mode2 == MV_PMODE_1MV_HPEL_BILIN));
1100 if (v->fcm == PROGRESSIVE) { // progressive
1101 if ((v->mv_mode == MV_PMODE_INTENSITY_COMP &&
1102 v->mv_mode2 == MV_PMODE_MIXED_MV)
1103 || v->mv_mode == MV_PMODE_MIXED_MV) {
1104 status = bitplane_decoding(v->mv_type_mb_plane, &v->mv_type_is_raw, v);
1107 av_log(v->s.avctx, AV_LOG_DEBUG, "MB MV Type plane encoding: "
1108 "Imode: %i, Invert: %i\n", status>>1, status&1);
1110 v->mv_type_is_raw = 0;
1111 memset(v->mv_type_mb_plane, 0, v->s.mb_stride * v->s.mb_height);
1113 status = bitplane_decoding(v->s.mbskip_table, &v->skip_is_raw, v);
1116 av_log(v->s.avctx, AV_LOG_DEBUG, "MB Skip plane encoding: "
1117 "Imode: %i, Invert: %i\n", status>>1, status&1);
1119 /* Hopefully this is correct for P frames */
1120 v->s.mv_table_index = get_bits(gb, 2); //but using ff_vc1_ tables
1121 v->cbpcy_vlc = &ff_vc1_cbpcy_p_vlc[get_bits(gb, 2)];
1122 } else if (v->fcm == ILACE_FRAME) { // frame interlaced
1123 v->qs_last = v->s.quarter_sample;
1124 v->s.quarter_sample = 1;
1126 } else { // field interlaced
1127 mbmodetab = get_bits(gb, 3);
1128 imvtab = get_bits(gb, 2 + v->numref);
1130 v->imv_vlc = &ff_vc1_1ref_mvdata_vlc[imvtab];
1132 v->imv_vlc = &ff_vc1_2ref_mvdata_vlc[imvtab];
1133 icbptab = get_bits(gb, 3);
1134 v->cbpcy_vlc = &ff_vc1_icbpcy_vlc[icbptab];
1135 if ((v->mv_mode == MV_PMODE_INTENSITY_COMP &&
1136 v->mv_mode2 == MV_PMODE_MIXED_MV) || v->mv_mode == MV_PMODE_MIXED_MV) {
1137 fourmvbptab = get_bits(gb, 2);
1138 v->fourmvbp_vlc = &ff_vc1_4mv_block_pattern_vlc[fourmvbptab];
1139 v->mbmode_vlc = &ff_vc1_if_mmv_mbmode_vlc[mbmodetab];
1141 v->mbmode_vlc = &ff_vc1_if_1mv_mbmode_vlc[mbmodetab];
1145 av_log(v->s.avctx, AV_LOG_DEBUG, "VOP DQuant info\n");
1146 vop_dquant_decoding(v);
1149 v->ttfrm = 0; //FIXME Is that so ?
1150 if (v->vstransform) {
1151 v->ttmbf = get_bits1(gb);
1153 v->ttfrm = ff_vc1_ttfrm_to_tt[get_bits(gb, 2)];
1160 case AV_PICTURE_TYPE_B:
1161 if (v->fcm == ILACE_FRAME) {
1162 v->bfraction_lut_index = get_vlc2(gb, ff_vc1_bfraction_vlc.table, VC1_BFRACTION_VLC_BITS, 1);
1163 v->bfraction = ff_vc1_bfraction_lut[v->bfraction_lut_index];
1164 if (v->bfraction == 0) {
1169 v->mvrange = get_unary(gb, 0, 3);
1172 v->k_x = v->mvrange + 9 + (v->mvrange >> 1); //k_x can be 9 10 12 13
1173 v->k_y = v->mvrange + 8; //k_y can be 8 9 10 11
1174 v->range_x = 1 << (v->k_x - 1);
1175 v->range_y = 1 << (v->k_y - 1);
1179 else if (v->pq < 13)
1184 if (v->field_mode) {
1186 av_log(v->s.avctx, AV_LOG_DEBUG, "B Fields\n");
1187 if (v->extended_dmv)
1188 v->dmvrange = get_unary(gb, 0, 3);
1189 mvmode = get_unary(gb, 1, 3);
1190 lowquant = (v->pq > 12) ? 0 : 1;
1191 v->mv_mode = ff_vc1_mv_pmode_table2[lowquant][mvmode];
1192 v->qs_last = v->s.quarter_sample;
1193 v->s.quarter_sample = (v->mv_mode == MV_PMODE_1MV || v->mv_mode == MV_PMODE_MIXED_MV);
1194 v->s.mspel = !(v->mv_mode == MV_PMODE_1MV_HPEL_BILIN || v->mv_mode == MV_PMODE_1MV_HPEL);
1195 status = bitplane_decoding(v->forward_mb_plane, &v->fmb_is_raw, v);
1198 av_log(v->s.avctx, AV_LOG_DEBUG, "MB Forward Type plane encoding: "
1199 "Imode: %i, Invert: %i\n", status>>1, status&1);
1200 mbmodetab = get_bits(gb, 3);
1201 if (v->mv_mode == MV_PMODE_MIXED_MV)
1202 v->mbmode_vlc = &ff_vc1_if_mmv_mbmode_vlc[mbmodetab];
1204 v->mbmode_vlc = &ff_vc1_if_1mv_mbmode_vlc[mbmodetab];
1205 imvtab = get_bits(gb, 3);
1206 v->imv_vlc = &ff_vc1_2ref_mvdata_vlc[imvtab];
1207 icbptab = get_bits(gb, 3);
1208 v->cbpcy_vlc = &ff_vc1_icbpcy_vlc[icbptab];
1209 if (v->mv_mode == MV_PMODE_MIXED_MV) {
1210 fourmvbptab = get_bits(gb, 2);
1211 v->fourmvbp_vlc = &ff_vc1_4mv_block_pattern_vlc[fourmvbptab];
1213 v->numref = 1; // interlaced field B pictures are always 2-ref
1214 } else if (v->fcm == ILACE_FRAME) {
1215 if (v->extended_dmv)
1216 v->dmvrange = get_unary(gb, 0, 3);
1217 get_bits1(gb); /* intcomp - present but shall always be 0 */
1219 v->mv_mode = MV_PMODE_1MV;
1220 v->fourmvswitch = 0;
1221 v->qs_last = v->s.quarter_sample;
1222 v->s.quarter_sample = 1;
1224 status = bitplane_decoding(v->direct_mb_plane, &v->dmb_is_raw, v);
1227 av_log(v->s.avctx, AV_LOG_DEBUG, "MB Direct Type plane encoding: "
1228 "Imode: %i, Invert: %i\n", status>>1, status&1);
1229 status = bitplane_decoding(v->s.mbskip_table, &v->skip_is_raw, v);
1232 av_log(v->s.avctx, AV_LOG_DEBUG, "MB Skip plane encoding: "
1233 "Imode: %i, Invert: %i\n", status>>1, status&1);
1234 mbmodetab = get_bits(gb, 2);
1235 v->mbmode_vlc = &ff_vc1_intfr_non4mv_mbmode_vlc[mbmodetab];
1236 imvtab = get_bits(gb, 2);
1237 v->imv_vlc = &ff_vc1_1ref_mvdata_vlc[imvtab];
1238 // interlaced p/b-picture cbpcy range is [1, 63]
1239 icbptab = get_bits(gb, 3);
1240 v->cbpcy_vlc = &ff_vc1_icbpcy_vlc[icbptab];
1241 twomvbptab = get_bits(gb, 2);
1242 v->twomvbp_vlc = &ff_vc1_2mv_block_pattern_vlc[twomvbptab];
1243 fourmvbptab = get_bits(gb, 2);
1244 v->fourmvbp_vlc = &ff_vc1_4mv_block_pattern_vlc[fourmvbptab];
1246 v->mv_mode = get_bits1(gb) ? MV_PMODE_1MV : MV_PMODE_1MV_HPEL_BILIN;
1247 v->qs_last = v->s.quarter_sample;
1248 v->s.quarter_sample = (v->mv_mode == MV_PMODE_1MV);
1249 v->s.mspel = v->s.quarter_sample;
1250 status = bitplane_decoding(v->direct_mb_plane, &v->dmb_is_raw, v);
1253 av_log(v->s.avctx, AV_LOG_DEBUG, "MB Direct Type plane encoding: "
1254 "Imode: %i, Invert: %i\n", status>>1, status&1);
1255 status = bitplane_decoding(v->s.mbskip_table, &v->skip_is_raw, v);
1258 av_log(v->s.avctx, AV_LOG_DEBUG, "MB Skip plane encoding: "
1259 "Imode: %i, Invert: %i\n", status>>1, status&1);
1260 v->s.mv_table_index = get_bits(gb, 2);
1261 v->cbpcy_vlc = &ff_vc1_cbpcy_p_vlc[get_bits(gb, 2)];
1265 av_log(v->s.avctx, AV_LOG_DEBUG, "VOP DQuant info\n");
1266 vop_dquant_decoding(v);
1270 if (v->vstransform) {
1271 v->ttmbf = get_bits1(gb);
1273 v->ttfrm = ff_vc1_ttfrm_to_tt[get_bits(gb, 2)];
1282 if (v->fcm != PROGRESSIVE && !v->s.quarter_sample) {
1288 v->c_ac_table_index = decode012(gb);
1289 if (v->s.pict_type == AV_PICTURE_TYPE_I || v->s.pict_type == AV_PICTURE_TYPE_BI) {
1290 v->y_ac_table_index = decode012(gb);
1293 v->s.dc_table_index = get_bits1(gb);
1294 if ((v->s.pict_type == AV_PICTURE_TYPE_I || v->s.pict_type == AV_PICTURE_TYPE_BI)
1296 av_log(v->s.avctx, AV_LOG_DEBUG, "VOP DQuant info\n");
1297 vop_dquant_decoding(v);
1301 if (v->s.pict_type == AV_PICTURE_TYPE_BI) {
1302 v->s.pict_type = AV_PICTURE_TYPE_B;
1308 static const uint32_t vc1_ac_tables[AC_MODES][186][2] = {
1310 { 0x0001, 2}, { 0x0005, 3}, { 0x000D, 4}, { 0x0012, 5}, { 0x000E, 6}, { 0x0015, 7},
1311 { 0x0013, 8}, { 0x003F, 8}, { 0x004B, 9}, { 0x011F, 9}, { 0x00B8, 10}, { 0x03E3, 10},
1312 { 0x0172, 11}, { 0x024D, 12}, { 0x03DA, 12}, { 0x02DD, 13}, { 0x1F55, 13}, { 0x05B9, 14},
1313 { 0x3EAE, 14}, { 0x0000, 4}, { 0x0010, 5}, { 0x0008, 7}, { 0x0020, 8}, { 0x0029, 9},
1314 { 0x01F4, 9}, { 0x0233, 10}, { 0x01E0, 11}, { 0x012A, 12}, { 0x03DD, 12}, { 0x050A, 13},
1315 { 0x1F29, 13}, { 0x0A42, 14}, { 0x1272, 15}, { 0x1737, 15}, { 0x0003, 5}, { 0x0011, 7},
1316 { 0x00C4, 8}, { 0x004B, 10}, { 0x00B4, 11}, { 0x07D4, 11}, { 0x0345, 12}, { 0x02D7, 13},
1317 { 0x07BF, 13}, { 0x0938, 14}, { 0x0BBB, 14}, { 0x095E, 15}, { 0x0013, 5}, { 0x0078, 7},
1318 { 0x0069, 9}, { 0x0232, 10}, { 0x0461, 11}, { 0x03EC, 12}, { 0x0520, 13}, { 0x1F2A, 13},
1319 { 0x3E50, 14}, { 0x3E51, 14}, { 0x1486, 15}, { 0x000C, 6}, { 0x0024, 9}, { 0x0094, 11},
1320 { 0x08C0, 12}, { 0x0F09, 14}, { 0x1EF0, 15}, { 0x003D, 6}, { 0x0053, 9}, { 0x01A0, 11},
1321 { 0x02D6, 13}, { 0x0F08, 14}, { 0x0013, 7}, { 0x007C, 9}, { 0x07C1, 11}, { 0x04AC, 14},
1322 { 0x001B, 7}, { 0x00A0, 10}, { 0x0344, 12}, { 0x0F79, 14}, { 0x0079, 7}, { 0x03E1, 10},
1323 { 0x02D4, 13}, { 0x2306, 14}, { 0x0021, 8}, { 0x023C, 10}, { 0x0FAE, 12}, { 0x23DE, 14},
1324 { 0x0035, 8}, { 0x0175, 11}, { 0x07B3, 13}, { 0x00C5, 8}, { 0x0174, 11}, { 0x0785, 13},
1325 { 0x0048, 9}, { 0x01A3, 11}, { 0x049E, 13}, { 0x002C, 9}, { 0x00FA, 10}, { 0x07D6, 11},
1326 { 0x0092, 10}, { 0x05CC, 13}, { 0x1EF1, 15}, { 0x00A3, 10}, { 0x03ED, 12}, { 0x093E, 14},
1327 { 0x01E2, 11}, { 0x1273, 15}, { 0x07C4, 11}, { 0x1487, 15}, { 0x0291, 12}, { 0x0293, 12},
1328 { 0x0F8A, 12}, { 0x0509, 13}, { 0x0508, 13}, { 0x078D, 13}, { 0x07BE, 13}, { 0x078C, 13},
1329 { 0x04AE, 14}, { 0x0BBA, 14}, { 0x2307, 14}, { 0x0B9A, 14}, { 0x1736, 15}, { 0x000E, 4},
1330 { 0x0045, 7}, { 0x01F3, 9}, { 0x047A, 11}, { 0x05DC, 13}, { 0x23DF, 14}, { 0x0019, 5},
1331 { 0x0028, 9}, { 0x0176, 11}, { 0x049D, 13}, { 0x23DD, 14}, { 0x0030, 6}, { 0x00A2, 10},
1332 { 0x02EF, 12}, { 0x05B8, 14}, { 0x003F, 6}, { 0x00A5, 10}, { 0x03DB, 12}, { 0x093F, 14},
1333 { 0x0044, 7}, { 0x07CB, 11}, { 0x095F, 15}, { 0x0063, 7}, { 0x03C3, 12}, { 0x0015, 8},
1334 { 0x08F6, 12}, { 0x0017, 8}, { 0x0498, 13}, { 0x002C, 8}, { 0x07B2, 13}, { 0x002F, 8},
1335 { 0x1F54, 13}, { 0x008D, 8}, { 0x07BD, 13}, { 0x008E, 8}, { 0x1182, 13}, { 0x00FB, 8},
1336 { 0x050B, 13}, { 0x002D, 8}, { 0x07C0, 11}, { 0x0079, 9}, { 0x1F5F, 13}, { 0x007A, 9},
1337 { 0x1F56, 13}, { 0x0231, 10}, { 0x03E4, 10}, { 0x01A1, 11}, { 0x0143, 11}, { 0x01F7, 11},
1338 { 0x016F, 12}, { 0x0292, 12}, { 0x02E7, 12}, { 0x016C, 12}, { 0x016D, 12}, { 0x03DC, 12},
1339 { 0x0F8B, 12}, { 0x0499, 13}, { 0x03D8, 12}, { 0x078E, 13}, { 0x02D5, 13}, { 0x1F5E, 13},
1340 { 0x1F2B, 13}, { 0x078F, 13}, { 0x04AD, 14}, { 0x3EAF, 14}, { 0x23DC, 14}, { 0x004A, 9}
1343 { 0x0000, 3}, { 0x0003, 4}, { 0x000B, 5}, { 0x0014, 6}, { 0x003F, 6}, { 0x005D, 7},
1344 { 0x00A2, 8}, { 0x00AC, 9}, { 0x016E, 9}, { 0x020A, 10}, { 0x02E2, 10}, { 0x0432, 11},
1345 { 0x05C9, 11}, { 0x0827, 12}, { 0x0B54, 12}, { 0x04E6, 13}, { 0x105F, 13}, { 0x172A, 13},
1346 { 0x20B2, 14}, { 0x2D4E, 14}, { 0x39F0, 14}, { 0x4175, 15}, { 0x5A9E, 15}, { 0x0004, 4},
1347 { 0x001E, 5}, { 0x0042, 7}, { 0x00B6, 8}, { 0x0173, 9}, { 0x0395, 10}, { 0x072E, 11},
1348 { 0x0B94, 12}, { 0x16A4, 13}, { 0x20B3, 14}, { 0x2E45, 14}, { 0x0005, 5}, { 0x0040, 7},
1349 { 0x0049, 9}, { 0x028F, 10}, { 0x05CB, 11}, { 0x048A, 13}, { 0x09DD, 14}, { 0x73E2, 15},
1350 { 0x0018, 5}, { 0x0025, 8}, { 0x008A, 10}, { 0x051B, 11}, { 0x0E5F, 12}, { 0x09C9, 14},
1351 { 0x139C, 15}, { 0x0029, 6}, { 0x004F, 9}, { 0x0412, 11}, { 0x048D, 13}, { 0x2E41, 14},
1352 { 0x0038, 6}, { 0x010E, 9}, { 0x05A8, 11}, { 0x105C, 13}, { 0x39F2, 14}, { 0x0058, 7},
1353 { 0x021F, 10}, { 0x0E7E, 12}, { 0x39FF, 14}, { 0x0023, 8}, { 0x02E3, 10}, { 0x04E5, 13},
1354 { 0x2E40, 14}, { 0x00A1, 8}, { 0x05BE, 11}, { 0x09C8, 14}, { 0x0083, 8}, { 0x013A, 11},
1355 { 0x1721, 13}, { 0x0044, 9}, { 0x0276, 12}, { 0x39F6, 14}, { 0x008B, 10}, { 0x04EF, 13},
1356 { 0x5A9B, 15}, { 0x0208, 10}, { 0x1CFE, 13}, { 0x0399, 10}, { 0x1CB4, 13}, { 0x039E, 10},
1357 { 0x39F3, 14}, { 0x05AB, 11}, { 0x73E3, 15}, { 0x0737, 11}, { 0x5A9F, 15}, { 0x082D, 12},
1358 { 0x0E69, 12}, { 0x0E68, 12}, { 0x0433, 11}, { 0x0B7B, 12}, { 0x2DF8, 14}, { 0x2E56, 14},
1359 { 0x2E57, 14}, { 0x39F7, 14}, { 0x51A5, 15}, { 0x0003, 3}, { 0x002A, 6}, { 0x00E4, 8},
1360 { 0x028E, 10}, { 0x0735, 11}, { 0x1058, 13}, { 0x1CFA, 13}, { 0x2DF9, 14}, { 0x4174, 15},
1361 { 0x0009, 4}, { 0x0054, 8}, { 0x0398, 10}, { 0x048B, 13}, { 0x139D, 15}, { 0x000D, 4},
1362 { 0x00AD, 9}, { 0x0826, 12}, { 0x2D4C, 14}, { 0x0011, 5}, { 0x016B, 9}, { 0x0B7F, 12},
1363 { 0x51A4, 15}, { 0x0019, 5}, { 0x021B, 10}, { 0x16FD, 13}, { 0x001D, 5}, { 0x0394, 10},
1364 { 0x28D3, 14}, { 0x002B, 6}, { 0x05BC, 11}, { 0x5A9A, 15}, { 0x002F, 6}, { 0x0247, 12},
1365 { 0x0010, 7}, { 0x0A35, 12}, { 0x003E, 6}, { 0x0B7A, 12}, { 0x0059, 7}, { 0x105E, 13},
1366 { 0x0026, 8}, { 0x09CF, 14}, { 0x0055, 8}, { 0x1CB5, 13}, { 0x0057, 8}, { 0x0E5B, 12},
1367 { 0x00A0, 8}, { 0x1468, 13}, { 0x0170, 9}, { 0x0090, 10}, { 0x01CE, 9}, { 0x021A, 10},
1368 { 0x0218, 10}, { 0x0168, 9}, { 0x021E, 10}, { 0x0244, 12}, { 0x0736, 11}, { 0x0138, 11},
1369 { 0x0519, 11}, { 0x0E5E, 12}, { 0x072C, 11}, { 0x0B55, 12}, { 0x09DC, 14}, { 0x20BB, 14},
1370 { 0x048C, 13}, { 0x1723, 13}, { 0x2E44, 14}, { 0x16A5, 13}, { 0x0518, 11}, { 0x39FE, 14},
1374 { 0x0001, 2}, { 0x0006, 3}, { 0x000F, 4}, { 0x0016, 5}, { 0x0020, 6}, { 0x0018, 7},
1375 { 0x0008, 8}, { 0x009A, 8}, { 0x0056, 9}, { 0x013E, 9}, { 0x00F0, 10}, { 0x03A5, 10},
1376 { 0x0077, 11}, { 0x01EF, 11}, { 0x009A, 12}, { 0x005D, 13}, { 0x0001, 4}, { 0x0011, 5},
1377 { 0x0002, 7}, { 0x000B, 8}, { 0x0012, 9}, { 0x01D6, 9}, { 0x027E, 10}, { 0x0191, 11},
1378 { 0x00EA, 12}, { 0x03DC, 12}, { 0x013B, 13}, { 0x0004, 5}, { 0x0014, 7}, { 0x009E, 8},
1379 { 0x0009, 10}, { 0x01AC, 11}, { 0x01E2, 11}, { 0x03CA, 12}, { 0x005F, 13}, { 0x0017, 5},
1380 { 0x004E, 7}, { 0x005E, 9}, { 0x00F3, 10}, { 0x01AD, 11}, { 0x00EC, 12}, { 0x05F0, 13},
1381 { 0x000E, 6}, { 0x00E1, 8}, { 0x03A4, 10}, { 0x009C, 12}, { 0x013D, 13}, { 0x003B, 6},
1382 { 0x001C, 9}, { 0x0014, 11}, { 0x09BE, 12}, { 0x0006, 7}, { 0x007A, 9}, { 0x0190, 11},
1383 { 0x0137, 13}, { 0x001B, 7}, { 0x0008, 10}, { 0x075C, 11}, { 0x0071, 7}, { 0x00D7, 10},
1384 { 0x09BF, 12}, { 0x0007, 8}, { 0x00AF, 10}, { 0x04CC, 11}, { 0x0034, 8}, { 0x0265, 10},
1385 { 0x009F, 12}, { 0x00E0, 8}, { 0x0016, 11}, { 0x0327, 12}, { 0x0015, 9}, { 0x017D, 11},
1386 { 0x0EBB, 12}, { 0x0014, 9}, { 0x00F6, 10}, { 0x01E4, 11}, { 0x00CB, 10}, { 0x099D, 12},
1387 { 0x00CA, 10}, { 0x02FC, 12}, { 0x017F, 11}, { 0x04CD, 11}, { 0x02FD, 12}, { 0x04FE, 11},
1388 { 0x013A, 13}, { 0x000A, 4}, { 0x0042, 7}, { 0x01D3, 9}, { 0x04DD, 11}, { 0x0012, 5},
1389 { 0x00E8, 8}, { 0x004C, 11}, { 0x0136, 13}, { 0x0039, 6}, { 0x0264, 10}, { 0x0EBA, 12},
1390 { 0x0000, 7}, { 0x00AE, 10}, { 0x099C, 12}, { 0x001F, 7}, { 0x04DE, 11}, { 0x0043, 7},
1391 { 0x04DC, 11}, { 0x0003, 8}, { 0x03CB, 12}, { 0x0006, 8}, { 0x099E, 12}, { 0x002A, 8},
1392 { 0x05F1, 13}, { 0x000F, 8}, { 0x09FE, 12}, { 0x0033, 8}, { 0x09FF, 12}, { 0x0098, 8},
1393 { 0x099F, 12}, { 0x00EA, 8}, { 0x013C, 13}, { 0x002E, 8}, { 0x0192, 11}, { 0x0136, 9},
1394 { 0x006A, 9}, { 0x0015, 11}, { 0x03AF, 10}, { 0x01E3, 11}, { 0x0074, 11}, { 0x00EB, 12},
1395 { 0x02F9, 12}, { 0x005C, 13}, { 0x00ED, 12}, { 0x03DD, 12}, { 0x0326, 12}, { 0x005E, 13},
1399 { 0x0004, 3}, { 0x0014, 5}, { 0x0017, 7}, { 0x007F, 8}, { 0x0154, 9}, { 0x01F2, 10},
1400 { 0x00BF, 11}, { 0x0065, 12}, { 0x0AAA, 12}, { 0x0630, 13}, { 0x1597, 13}, { 0x03B7, 14},
1401 { 0x2B22, 14}, { 0x0BE6, 15}, { 0x000B, 4}, { 0x0037, 7}, { 0x0062, 9}, { 0x0007, 11},
1402 { 0x0166, 12}, { 0x00CE, 13}, { 0x1590, 13}, { 0x05F6, 14}, { 0x0BE7, 15}, { 0x0007, 5},
1403 { 0x006D, 8}, { 0x0003, 11}, { 0x031F, 12}, { 0x05F2, 14}, { 0x0002, 6}, { 0x0061, 9},
1404 { 0x0055, 12}, { 0x01DF, 14}, { 0x001A, 6}, { 0x001E, 10}, { 0x0AC9, 12}, { 0x2B23, 14},
1405 { 0x001E, 6}, { 0x001F, 10}, { 0x0AC3, 12}, { 0x2B2B, 14}, { 0x0006, 7}, { 0x0004, 11},
1406 { 0x02F8, 13}, { 0x0019, 7}, { 0x0006, 11}, { 0x063D, 13}, { 0x0057, 7}, { 0x0182, 11},
1407 { 0x2AA2, 14}, { 0x0004, 8}, { 0x0180, 11}, { 0x059C, 14}, { 0x007D, 8}, { 0x0164, 12},
1408 { 0x076D, 15}, { 0x0002, 9}, { 0x018D, 11}, { 0x1581, 13}, { 0x00AD, 8}, { 0x0060, 12},
1409 { 0x0C67, 14}, { 0x001C, 9}, { 0x00EE, 13}, { 0x0003, 9}, { 0x02CF, 13}, { 0x00D9, 9},
1410 { 0x1580, 13}, { 0x0002, 11}, { 0x0183, 11}, { 0x0057, 12}, { 0x0061, 12}, { 0x0031, 11},
1411 { 0x0066, 12}, { 0x0631, 13}, { 0x0632, 13}, { 0x00AC, 13}, { 0x031D, 12}, { 0x0076, 12},
1412 { 0x003A, 11}, { 0x0165, 12}, { 0x0C66, 14}, { 0x0003, 2}, { 0x0054, 7}, { 0x02AB, 10},
1413 { 0x0016, 13}, { 0x05F7, 14}, { 0x0005, 4}, { 0x00F8, 9}, { 0x0AA9, 12}, { 0x005F, 15},
1414 { 0x0004, 4}, { 0x001C, 10}, { 0x1550, 13}, { 0x0004, 5}, { 0x0077, 11}, { 0x076C, 15},
1415 { 0x000E, 5}, { 0x000A, 12}, { 0x000C, 5}, { 0x0562, 11}, { 0x0004, 6}, { 0x031C, 12},
1416 { 0x0006, 6}, { 0x00C8, 13}, { 0x000D, 6}, { 0x01DA, 13}, { 0x0007, 6}, { 0x00C9, 13},
1417 { 0x0001, 7}, { 0x002E, 14}, { 0x0014, 7}, { 0x1596, 13}, { 0x000A, 7}, { 0x0AC2, 12},
1418 { 0x0016, 7}, { 0x015B, 14}, { 0x0015, 7}, { 0x015A, 14}, { 0x000F, 8}, { 0x005E, 15},
1419 { 0x007E, 8}, { 0x00AB, 8}, { 0x002D, 9}, { 0x00D8, 9}, { 0x000B, 9}, { 0x0014, 10},
1420 { 0x02B3, 10}, { 0x01F3, 10}, { 0x003A, 10}, { 0x0000, 10}, { 0x0058, 10}, { 0x002E, 9},
1421 { 0x005E, 10}, { 0x0563, 11}, { 0x00EC, 12}, { 0x0054, 12}, { 0x0AC1, 12}, { 0x1556, 13},
1422 { 0x02FA, 13}, { 0x0181, 11}, { 0x1557, 13}, { 0x059D, 14}, { 0x2AA3, 14}, { 0x2B2A, 14},
1423 { 0x01DE, 14}, { 0x063C, 13}, { 0x00CF, 13}, { 0x1594, 13}, { 0x000D, 9}
1426 { 0x0002, 2}, { 0x0006, 3}, { 0x000F, 4}, { 0x000D, 5}, { 0x000C, 5}, { 0x0015, 6},
1427 { 0x0013, 6}, { 0x0012, 6}, { 0x0017, 7}, { 0x001F, 8}, { 0x001E, 8}, { 0x001D, 8},
1428 { 0x0025, 9}, { 0x0024, 9}, { 0x0023, 9}, { 0x0021, 9}, { 0x0021, 10}, { 0x0020, 10},
1429 { 0x000F, 10}, { 0x000E, 10}, { 0x0007, 11}, { 0x0006, 11}, { 0x0020, 11}, { 0x0021, 11},
1430 { 0x0050, 12}, { 0x0051, 12}, { 0x0052, 12}, { 0x000E, 4}, { 0x0014, 6}, { 0x0016, 7},
1431 { 0x001C, 8}, { 0x0020, 9}, { 0x001F, 9}, { 0x000D, 10}, { 0x0022, 11}, { 0x0053, 12},
1432 { 0x0055, 12}, { 0x000B, 5}, { 0x0015, 7}, { 0x001E, 9}, { 0x000C, 10}, { 0x0056, 12},
1433 { 0x0011, 6}, { 0x001B, 8}, { 0x001D, 9}, { 0x000B, 10}, { 0x0010, 6}, { 0x0022, 9},
1434 { 0x000A, 10}, { 0x000D, 6}, { 0x001C, 9}, { 0x0008, 10}, { 0x0012, 7}, { 0x001B, 9},
1435 { 0x0054, 12}, { 0x0014, 7}, { 0x001A, 9}, { 0x0057, 12}, { 0x0019, 8}, { 0x0009, 10},
1436 { 0x0018, 8}, { 0x0023, 11}, { 0x0017, 8}, { 0x0019, 9}, { 0x0018, 9}, { 0x0007, 10},
1437 { 0x0058, 12}, { 0x0007, 4}, { 0x000C, 6}, { 0x0016, 8}, { 0x0017, 9}, { 0x0006, 10},
1438 { 0x0005, 11}, { 0x0004, 11}, { 0x0059, 12}, { 0x000F, 6}, { 0x0016, 9}, { 0x0005, 10},
1439 { 0x000E, 6}, { 0x0004, 10}, { 0x0011, 7}, { 0x0024, 11}, { 0x0010, 7}, { 0x0025, 11},
1440 { 0x0013, 7}, { 0x005A, 12}, { 0x0015, 8}, { 0x005B, 12}, { 0x0014, 8}, { 0x0013, 8},
1441 { 0x001A, 8}, { 0x0015, 9}, { 0x0014, 9}, { 0x0013, 9}, { 0x0012, 9}, { 0x0011, 9},
1442 { 0x0026, 11}, { 0x0027, 11}, { 0x005C, 12}, { 0x005D, 12}, { 0x005E, 12}, { 0x005F, 12},
1446 { 0x0002, 2}, { 0x000F, 4}, { 0x0015, 6}, { 0x0017, 7}, { 0x001F, 8}, { 0x0025, 9},
1447 { 0x0024, 9}, { 0x0021, 10}, { 0x0020, 10}, { 0x0007, 11}, { 0x0006, 11}, { 0x0020, 11},
1448 { 0x0006, 3}, { 0x0014, 6}, { 0x001E, 8}, { 0x000F, 10}, { 0x0021, 11}, { 0x0050, 12},
1449 { 0x000E, 4}, { 0x001D, 8}, { 0x000E, 10}, { 0x0051, 12}, { 0x000D, 5}, { 0x0023, 9},
1450 { 0x000D, 10}, { 0x000C, 5}, { 0x0022, 9}, { 0x0052, 12}, { 0x000B, 5}, { 0x000C, 10},
1451 { 0x0053, 12}, { 0x0013, 6}, { 0x000B, 10}, { 0x0054, 12}, { 0x0012, 6}, { 0x000A, 10},
1452 { 0x0011, 6}, { 0x0009, 10}, { 0x0010, 6}, { 0x0008, 10}, { 0x0016, 7}, { 0x0055, 12},
1453 { 0x0015, 7}, { 0x0014, 7}, { 0x001C, 8}, { 0x001B, 8}, { 0x0021, 9}, { 0x0020, 9},
1454 { 0x001F, 9}, { 0x001E, 9}, { 0x001D, 9}, { 0x001C, 9}, { 0x001B, 9}, { 0x001A, 9},
1455 { 0x0022, 11}, { 0x0023, 11}, { 0x0056, 12}, { 0x0057, 12}, { 0x0007, 4}, { 0x0019, 9},
1456 { 0x0005, 11}, { 0x000F, 6}, { 0x0004, 11}, { 0x000E, 6}, { 0x000D, 6}, { 0x000C, 6},
1457 { 0x0013, 7}, { 0x0012, 7}, { 0x0011, 7}, { 0x0010, 7}, { 0x001A, 8}, { 0x0019, 8},
1458 { 0x0018, 8}, { 0x0017, 8}, { 0x0016, 8}, { 0x0015, 8}, { 0x0014, 8}, { 0x0013, 8},
1459 { 0x0018, 9}, { 0x0017, 9}, { 0x0016, 9}, { 0x0015, 9}, { 0x0014, 9}, { 0x0013, 9},
1460 { 0x0012, 9}, { 0x0011, 9}, { 0x0007, 10}, { 0x0006, 10}, { 0x0005, 10}, { 0x0004, 10},
1461 { 0x0024, 11}, { 0x0025, 11}, { 0x0026, 11}, { 0x0027, 11}, { 0x0058, 12}, { 0x0059, 12},
1462 { 0x005A, 12}, { 0x005B, 12}, { 0x005C, 12}, { 0x005D, 12}, { 0x005E, 12}, { 0x005F, 12},
1466 { 0x0000, 2}, { 0x0003, 3}, { 0x000D, 4}, { 0x0005, 4}, { 0x001C, 5}, { 0x0016, 5},
1467 { 0x003F, 6}, { 0x003A, 6}, { 0x002E, 6}, { 0x0022, 6}, { 0x007B, 7}, { 0x0067, 7},
1468 { 0x005F, 7}, { 0x0047, 7}, { 0x0026, 7}, { 0x00EF, 8}, { 0x00CD, 8}, { 0x00C1, 8},
1469 { 0x00A9, 8}, { 0x004F, 8}, { 0x01F2, 9}, { 0x01DD, 9}, { 0x0199, 9}, { 0x0185, 9},
1470 { 0x015D, 9}, { 0x011B, 9}, { 0x03EF, 10}, { 0x03E1, 10}, { 0x03C8, 10}, { 0x0331, 10},
1471 { 0x0303, 10}, { 0x02F1, 10}, { 0x02A0, 10}, { 0x0233, 10}, { 0x0126, 10}, { 0x07C0, 11},
1472 { 0x076F, 11}, { 0x076C, 11}, { 0x0661, 11}, { 0x0604, 11}, { 0x0572, 11}, { 0x0551, 11},
1473 { 0x046A, 11}, { 0x0274, 11}, { 0x0F27, 12}, { 0x0F24, 12}, { 0x0EDB, 12}, { 0x0C8E, 12},
1474 { 0x0C0B, 12}, { 0x0C0A, 12}, { 0x0AE3, 12}, { 0x08D6, 12}, { 0x0490, 12}, { 0x0495, 12},
1475 { 0x1F19, 13}, { 0x1DB5, 13}, { 0x0009, 4}, { 0x0010, 5}, { 0x0029, 6}, { 0x0062, 7},
1476 { 0x00F3, 8}, { 0x00AD, 8}, { 0x01E5, 9}, { 0x0179, 9}, { 0x009C, 9}, { 0x03B1, 10},
1477 { 0x02AE, 10}, { 0x0127, 10}, { 0x076E, 11}, { 0x0570, 11}, { 0x0275, 11}, { 0x0F25, 12},
1478 { 0x0EC0, 12}, { 0x0AA0, 12}, { 0x08D7, 12}, { 0x1E4C, 13}, { 0x0008, 5}, { 0x0063, 7},
1479 { 0x00AF, 8}, { 0x017B, 9}, { 0x03B3, 10}, { 0x07DD, 11}, { 0x0640, 11}, { 0x0F8D, 12},
1480 { 0x0BC1, 12}, { 0x0491, 12}, { 0x0028, 6}, { 0x00C3, 8}, { 0x0151, 9}, { 0x02A1, 10},
1481 { 0x0573, 11}, { 0x0EC3, 12}, { 0x1F35, 13}, { 0x0065, 7}, { 0x01DA, 9}, { 0x02AF, 10},
1482 { 0x0277, 11}, { 0x08C9, 12}, { 0x1781, 13}, { 0x0025, 7}, { 0x0118, 9}, { 0x0646, 11},
1483 { 0x0AA6, 12}, { 0x1780, 13}, { 0x00C9, 8}, { 0x0321, 10}, { 0x0F9B, 12}, { 0x191E, 13},
1484 { 0x0048, 8}, { 0x07CC, 11}, { 0x0AA1, 12}, { 0x0180, 9}, { 0x0465, 11}, { 0x1905, 13},
1485 { 0x03E2, 10}, { 0x0EC1, 12}, { 0x3C9B, 14}, { 0x02F4, 10}, { 0x08C8, 12}, { 0x07C1, 11},
1486 { 0x0928, 13}, { 0x05E1, 11}, { 0x320D, 14}, { 0x0EC2, 12}, { 0x6418, 15}, { 0x1F34, 13},
1487 { 0x0078, 7}, { 0x0155, 9}, { 0x0552, 11}, { 0x191F, 13}, { 0x00FA, 8}, { 0x07DC, 11},
1488 { 0x1907, 13}, { 0x00AC, 8}, { 0x0249, 11}, { 0x13B1, 14}, { 0x01F6, 9}, { 0x0AE2, 12},
1489 { 0x01DC, 9}, { 0x04ED, 12}, { 0x0184, 9}, { 0x1904, 13}, { 0x0156, 9}, { 0x09D9, 13},
1490 { 0x03E7, 10}, { 0x0929, 13}, { 0x03B2, 10}, { 0x3B68, 14}, { 0x02F5, 10}, { 0x13B0, 14},
1491 { 0x0322, 10}, { 0x3B69, 14}, { 0x0234, 10}, { 0x7935, 15}, { 0x07C7, 11}, { 0xC833, 16},
1492 { 0x0660, 11}, { 0x7934, 15}, { 0x024B, 11}, { 0xC832, 16}, { 0x0AA7, 12}, { 0x1F18, 13},
1496 { 0x0002, 2}, { 0x0000, 3}, { 0x001E, 5}, { 0x0004, 5}, { 0x0012, 6}, { 0x0070, 7},
1497 { 0x001A, 7}, { 0x005F, 8}, { 0x0047, 8}, { 0x01D3, 9}, { 0x00B5, 9}, { 0x0057, 9},
1498 { 0x03B5, 10}, { 0x016D, 10}, { 0x0162, 10}, { 0x07CE, 11}, { 0x0719, 11}, { 0x0691, 11},
1499 { 0x02C6, 11}, { 0x0156, 11}, { 0x0F92, 12}, { 0x0D2E, 12}, { 0x0D20, 12}, { 0x059E, 12},
1500 { 0x0468, 12}, { 0x02A6, 12}, { 0x1DA2, 13}, { 0x1C60, 13}, { 0x1A43, 13}, { 0x0B1D, 13},
1501 { 0x08C0, 13}, { 0x055D, 13}, { 0x0003, 3}, { 0x000A, 5}, { 0x0077, 7}, { 0x00E5, 8},
1502 { 0x01D9, 9}, { 0x03E5, 10}, { 0x0166, 10}, { 0x0694, 11}, { 0x0152, 11}, { 0x059F, 12},
1503 { 0x1F3C, 13}, { 0x1A4B, 13}, { 0x055E, 13}, { 0x000C, 4}, { 0x007D, 7}, { 0x0044, 8},
1504 { 0x03E0, 10}, { 0x0769, 11}, { 0x0E31, 12}, { 0x1F26, 13}, { 0x055C, 13}, { 0x001B, 5},
1505 { 0x00E2, 8}, { 0x03A5, 10}, { 0x02C9, 11}, { 0x1F23, 13}, { 0x3B47, 14}, { 0x0007, 5},
1506 { 0x01D8, 9}, { 0x02D8, 11}, { 0x1F27, 13}, { 0x3494, 14}, { 0x0035, 6}, { 0x03E1, 10},
1507 { 0x059C, 12}, { 0x38C3, 14}, { 0x000C, 6}, { 0x0165, 10}, { 0x1D23, 13}, { 0x1638, 14},
1508 { 0x0068, 7}, { 0x0693, 11}, { 0x3A45, 14}, { 0x0020, 7}, { 0x0F90, 12}, { 0x7CF6, 15},
1509 { 0x00E8, 8}, { 0x058F, 12}, { 0x2CEF, 15}, { 0x0045, 8}, { 0x0B3A, 13}, { 0x01F1, 9},
1510 { 0x3B46, 14}, { 0x01A7, 9}, { 0x1676, 14}, { 0x0056, 9}, { 0x692A, 15}, { 0x038D, 10},
1511 { 0xE309, 16}, { 0x00AA, 10}, { 0x1C611, 17}, { 0x02DF, 11}, { 0xB3B9, 17}, { 0x02C8, 11},
1512 { 0x38C20, 18}, { 0x01B0, 11}, { 0x16390, 18}, { 0x0F9F, 12}, { 0x16771, 18}, { 0x0ED0, 12},
1513 { 0x71843, 19}, { 0x0D2A, 12}, { 0xF9E8C, 20}, { 0x0461, 12}, { 0xF9E8E, 20}, { 0x0B67, 13},
1514 { 0x055F, 13}, { 0x003F, 6}, { 0x006D, 9}, { 0x0E90, 12}, { 0x054E, 13}, { 0x0013, 6},
1515 { 0x0119, 10}, { 0x0B66, 13}, { 0x000B, 6}, { 0x0235, 11}, { 0x7CF5, 15}, { 0x0075, 7},
1516 { 0x0D24, 12}, { 0xF9E9, 16}, { 0x002E, 7}, { 0x1F22, 13}, { 0x0021, 7}, { 0x054F, 13},
1517 { 0x0014, 7}, { 0x3A44, 14}, { 0x00E4, 8}, { 0x7CF7, 15}, { 0x005E, 8}, { 0x7185, 15},
1518 { 0x0037, 8}, { 0x2C73, 15}, { 0x01DB, 9}, { 0x59DD, 16}, { 0x01C7, 9}, { 0x692B, 15},
1519 { 0x01A6, 9}, { 0x58E5, 16}, { 0x00B4, 9}, { 0x1F3D0, 17}, { 0x00B0, 9}, { 0xB1C9, 17},
1520 { 0x03E6, 10}, { 0x16770, 18}, { 0x016E, 10}, { 0x3E7A2, 18}, { 0x011B, 10}, { 0xF9E8D, 20},
1521 { 0x00D9, 10}, { 0xF9E8F, 20}, { 0x00A8, 10}, { 0x2C723, 19}, { 0x0749, 11}, { 0xE3084, 20},
1522 { 0x0696, 11}, { 0x58E45, 20}, { 0x02DE, 11}, { 0xB1C88, 21}, { 0x0231, 11}, { 0x1C610A, 21},
1523 { 0x01B1, 11}, { 0x71842D, 23}, { 0x0D2B, 12}, { 0x38C217, 22}, { 0x0D2F, 12}, { 0x163913, 22},
1524 { 0x05B2, 12}, { 0x163912, 22}, { 0x0469, 12}, { 0x71842C, 23}, { 0x1A42, 13}, { 0x08C1, 13},
1529 static const uint16_t vlc_offs[] = {
1530 0, 520, 552, 616, 1128, 1160, 1224, 1740, 1772, 1836, 1900, 2436,
1531 2986, 3050, 3610, 4154, 4218, 4746, 5326, 5390, 5902, 6554, 7658, 8342,
1532 9304, 9988, 10630, 11234, 12174, 13006, 13560, 14232, 14786, 15432, 16350, 17522,
1533 20372, 21818, 22330, 22394, 23166, 23678, 23742, 24820, 25332, 25396, 26460, 26980,
1534 27048, 27592, 27600, 27608, 27616, 27624, 28224, 28258, 28290, 28802, 28834, 28866,
1535 29378, 29412, 29444, 29960, 29994, 30026, 30538, 30572, 30604, 31120, 31154, 31186,
1536 31714, 31746, 31778, 32306, 32340, 32372
1540 * Init VC-1 specific tables and VC1Context members
1541 * @param v The VC1Context to initialize
1544 int ff_vc1_init_common(VC1Context *v)
1546 static int done = 0;
1548 static VLC_TYPE vlc_table[32372][2];
1550 v->hrd_rate = v->hrd_buffer = NULL;
1554 INIT_VLC_STATIC(&ff_vc1_bfraction_vlc, VC1_BFRACTION_VLC_BITS, 23,
1555 ff_vc1_bfraction_bits, 1, 1,
1556 ff_vc1_bfraction_codes, 1, 1, 1 << VC1_BFRACTION_VLC_BITS);
1557 INIT_VLC_STATIC(&ff_vc1_norm2_vlc, VC1_NORM2_VLC_BITS, 4,
1558 ff_vc1_norm2_bits, 1, 1,
1559 ff_vc1_norm2_codes, 1, 1, 1 << VC1_NORM2_VLC_BITS);
1560 INIT_VLC_STATIC(&ff_vc1_norm6_vlc, VC1_NORM6_VLC_BITS, 64,
1561 ff_vc1_norm6_bits, 1, 1,
1562 ff_vc1_norm6_codes, 2, 2, 556);
1563 INIT_VLC_STATIC(&ff_vc1_imode_vlc, VC1_IMODE_VLC_BITS, 7,
1564 ff_vc1_imode_bits, 1, 1,
1565 ff_vc1_imode_codes, 1, 1, 1 << VC1_IMODE_VLC_BITS);
1566 for (i = 0; i < 3; i++) {
1567 ff_vc1_ttmb_vlc[i].table = &vlc_table[vlc_offs[i * 3 + 0]];
1568 ff_vc1_ttmb_vlc[i].table_allocated = vlc_offs[i * 3 + 1] - vlc_offs[i * 3 + 0];
1569 init_vlc(&ff_vc1_ttmb_vlc[i], VC1_TTMB_VLC_BITS, 16,
1570 ff_vc1_ttmb_bits[i], 1, 1,
1571 ff_vc1_ttmb_codes[i], 2, 2, INIT_VLC_USE_NEW_STATIC);
1572 ff_vc1_ttblk_vlc[i].table = &vlc_table[vlc_offs[i * 3 + 1]];
1573 ff_vc1_ttblk_vlc[i].table_allocated = vlc_offs[i * 3 + 2] - vlc_offs[i * 3 + 1];
1574 init_vlc(&ff_vc1_ttblk_vlc[i], VC1_TTBLK_VLC_BITS, 8,
1575 ff_vc1_ttblk_bits[i], 1, 1,
1576 ff_vc1_ttblk_codes[i], 1, 1, INIT_VLC_USE_NEW_STATIC);
1577 ff_vc1_subblkpat_vlc[i].table = &vlc_table[vlc_offs[i * 3 + 2]];
1578 ff_vc1_subblkpat_vlc[i].table_allocated = vlc_offs[i * 3 + 3] - vlc_offs[i * 3 + 2];
1579 init_vlc(&ff_vc1_subblkpat_vlc[i], VC1_SUBBLKPAT_VLC_BITS, 15,
1580 ff_vc1_subblkpat_bits[i], 1, 1,
1581 ff_vc1_subblkpat_codes[i], 1, 1, INIT_VLC_USE_NEW_STATIC);
1583 for (i = 0; i < 4; i++) {
1584 ff_vc1_4mv_block_pattern_vlc[i].table = &vlc_table[vlc_offs[i * 3 + 9]];
1585 ff_vc1_4mv_block_pattern_vlc[i].table_allocated = vlc_offs[i * 3 + 10] - vlc_offs[i * 3 + 9];
1586 init_vlc(&ff_vc1_4mv_block_pattern_vlc[i], VC1_4MV_BLOCK_PATTERN_VLC_BITS, 16,
1587 ff_vc1_4mv_block_pattern_bits[i], 1, 1,
1588 ff_vc1_4mv_block_pattern_codes[i], 1, 1, INIT_VLC_USE_NEW_STATIC);
1589 ff_vc1_cbpcy_p_vlc[i].table = &vlc_table[vlc_offs[i * 3 + 10]];
1590 ff_vc1_cbpcy_p_vlc[i].table_allocated = vlc_offs[i * 3 + 11] - vlc_offs[i * 3 + 10];
1591 init_vlc(&ff_vc1_cbpcy_p_vlc[i], VC1_CBPCY_P_VLC_BITS, 64,
1592 ff_vc1_cbpcy_p_bits[i], 1, 1,
1593 ff_vc1_cbpcy_p_codes[i], 2, 2, INIT_VLC_USE_NEW_STATIC);
1594 ff_vc1_mv_diff_vlc[i].table = &vlc_table[vlc_offs[i * 3 + 11]];
1595 ff_vc1_mv_diff_vlc[i].table_allocated = vlc_offs[i * 3 + 12] - vlc_offs[i * 3 + 11];
1596 init_vlc(&ff_vc1_mv_diff_vlc[i], VC1_MV_DIFF_VLC_BITS, 73,
1597 ff_vc1_mv_diff_bits[i], 1, 1,
1598 ff_vc1_mv_diff_codes[i], 2, 2, INIT_VLC_USE_NEW_STATIC);
1600 for (i = 0; i < 8; i++) {
1601 ff_vc1_ac_coeff_table[i].table = &vlc_table[vlc_offs[i * 2 + 21]];
1602 ff_vc1_ac_coeff_table[i].table_allocated = vlc_offs[i * 2 + 22] - vlc_offs[i * 2 + 21];
1603 init_vlc(&ff_vc1_ac_coeff_table[i], AC_VLC_BITS, ff_vc1_ac_sizes[i],
1604 &vc1_ac_tables[i][0][1], 8, 4,
1605 &vc1_ac_tables[i][0][0], 8, 4, INIT_VLC_USE_NEW_STATIC);
1606 /* initialize interlaced MVDATA tables (2-Ref) */
1607 ff_vc1_2ref_mvdata_vlc[i].table = &vlc_table[vlc_offs[i * 2 + 22]];
1608 ff_vc1_2ref_mvdata_vlc[i].table_allocated = vlc_offs[i * 2 + 23] - vlc_offs[i * 2 + 22];
1609 init_vlc(&ff_vc1_2ref_mvdata_vlc[i], VC1_2REF_MVDATA_VLC_BITS, 126,
1610 ff_vc1_2ref_mvdata_bits[i], 1, 1,
1611 ff_vc1_2ref_mvdata_codes[i], 4, 4, INIT_VLC_USE_NEW_STATIC);
1613 for (i = 0; i < 4; i++) {
1614 /* initialize 4MV MBMODE VLC tables for interlaced frame P picture */
1615 ff_vc1_intfr_4mv_mbmode_vlc[i].table = &vlc_table[vlc_offs[i * 3 + 37]];
1616 ff_vc1_intfr_4mv_mbmode_vlc[i].table_allocated = vlc_offs[i * 3 + 38] - vlc_offs[i * 3 + 37];
1617 init_vlc(&ff_vc1_intfr_4mv_mbmode_vlc[i], VC1_INTFR_4MV_MBMODE_VLC_BITS, 15,
1618 ff_vc1_intfr_4mv_mbmode_bits[i], 1, 1,
1619 ff_vc1_intfr_4mv_mbmode_codes[i], 2, 2, INIT_VLC_USE_NEW_STATIC);
1620 /* initialize NON-4MV MBMODE VLC tables for the same */
1621 ff_vc1_intfr_non4mv_mbmode_vlc[i].table = &vlc_table[vlc_offs[i * 3 + 38]];
1622 ff_vc1_intfr_non4mv_mbmode_vlc[i].table_allocated = vlc_offs[i * 3 + 39] - vlc_offs[i * 3 + 38];
1623 init_vlc(&ff_vc1_intfr_non4mv_mbmode_vlc[i], VC1_INTFR_NON4MV_MBMODE_VLC_BITS, 9,
1624 ff_vc1_intfr_non4mv_mbmode_bits[i], 1, 1,
1625 ff_vc1_intfr_non4mv_mbmode_codes[i], 1, 1, INIT_VLC_USE_NEW_STATIC);
1626 /* initialize interlaced MVDATA tables (1-Ref) */
1627 ff_vc1_1ref_mvdata_vlc[i].table = &vlc_table[vlc_offs[i * 3 + 39]];
1628 ff_vc1_1ref_mvdata_vlc[i].table_allocated = vlc_offs[i * 3 + 40] - vlc_offs[i * 3 + 39];
1629 init_vlc(&ff_vc1_1ref_mvdata_vlc[i], VC1_1REF_MVDATA_VLC_BITS, 72,
1630 ff_vc1_1ref_mvdata_bits[i], 1, 1,
1631 ff_vc1_1ref_mvdata_codes[i], 4, 4, INIT_VLC_USE_NEW_STATIC);
1633 for (i = 0; i < 4; i++) {
1634 /* Initialize 2MV Block pattern VLC tables */
1635 ff_vc1_2mv_block_pattern_vlc[i].table = &vlc_table[vlc_offs[i + 49]];
1636 ff_vc1_2mv_block_pattern_vlc[i].table_allocated = vlc_offs[i + 50] - vlc_offs[i + 49];
1637 init_vlc(&ff_vc1_2mv_block_pattern_vlc[i], VC1_2MV_BLOCK_PATTERN_VLC_BITS, 4,
1638 ff_vc1_2mv_block_pattern_bits[i], 1, 1,
1639 ff_vc1_2mv_block_pattern_codes[i], 1, 1, INIT_VLC_USE_NEW_STATIC);
1641 for (i = 0; i < 8; i++) {
1642 /* Initialize interlaced CBPCY VLC tables (Table 124 - Table 131) */
1643 ff_vc1_icbpcy_vlc[i].table = &vlc_table[vlc_offs[i * 3 + 53]];
1644 ff_vc1_icbpcy_vlc[i].table_allocated = vlc_offs[i * 3 + 54] - vlc_offs[i * 3 + 53];
1645 init_vlc(&ff_vc1_icbpcy_vlc[i], VC1_ICBPCY_VLC_BITS, 63,
1646 ff_vc1_icbpcy_p_bits[i], 1, 1,
1647 ff_vc1_icbpcy_p_codes[i], 2, 2, INIT_VLC_USE_NEW_STATIC);
1648 /* Initialize interlaced field picture MBMODE VLC tables */
1649 ff_vc1_if_mmv_mbmode_vlc[i].table = &vlc_table[vlc_offs[i * 3 + 54]];
1650 ff_vc1_if_mmv_mbmode_vlc[i].table_allocated = vlc_offs[i * 3 + 55] - vlc_offs[i * 3 + 54];
1651 init_vlc(&ff_vc1_if_mmv_mbmode_vlc[i], VC1_IF_MMV_MBMODE_VLC_BITS, 8,
1652 ff_vc1_if_mmv_mbmode_bits[i], 1, 1,
1653 ff_vc1_if_mmv_mbmode_codes[i], 1, 1, INIT_VLC_USE_NEW_STATIC);
1654 ff_vc1_if_1mv_mbmode_vlc[i].table = &vlc_table[vlc_offs[i * 3 + 55]];
1655 ff_vc1_if_1mv_mbmode_vlc[i].table_allocated = vlc_offs[i * 3 + 56] - vlc_offs[i * 3 + 55];
1656 init_vlc(&ff_vc1_if_1mv_mbmode_vlc[i], VC1_IF_1MV_MBMODE_VLC_BITS, 6,
1657 ff_vc1_if_1mv_mbmode_bits[i], 1, 1,
1658 ff_vc1_if_1mv_mbmode_codes[i], 1, 1, INIT_VLC_USE_NEW_STATIC);
1663 /* Other defaults */
1665 v->mvrange = 0; /* 7.1.1.18, p80 */