FFmpeg
vc1.c
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1 /*
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
6  *
7  * This file is part of FFmpeg.
8  *
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.
13  *
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.
18  *
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
22  */
23 
24 /**
25  * @file
26  * VC-1 and WMV3 decoder common code
27  */
28 
29 #include "libavutil/attributes.h"
30 #include "internal.h"
31 #include "avcodec.h"
32 #include "mpegvideo.h"
33 #include "vc1.h"
34 #include "vc1data.h"
35 #include "wmv2data.h"
36 #include "unary.h"
37 #include "simple_idct.h"
38 
39 /***********************************************************************/
40 /**
41  * @name VC-1 Bitplane decoding
42  * @see 8.7, p56
43  * @{
44  */
45 
46 /** Decode rows by checking if they are skipped
47  * @param plane Buffer to store decoded bits
48  * @param[in] width Width of this buffer
49  * @param[in] height Height of this buffer
50  * @param[in] stride of this buffer
51  */
52 static void decode_rowskip(uint8_t* plane, int width, int height, int stride,
53  GetBitContext *gb)
54 {
55  int x, y;
56 
57  for (y = 0; y < height; y++) {
58  if (!get_bits1(gb)) //rowskip
59  memset(plane, 0, width);
60  else
61  for (x = 0; x < width; x++)
62  plane[x] = get_bits1(gb);
63  plane += stride;
64  }
65 }
66 
67 /** Decode columns by checking if they are skipped
68  * @param plane Buffer to store decoded bits
69  * @param[in] width Width of this buffer
70  * @param[in] height Height of this buffer
71  * @param[in] stride of this buffer
72  * @todo FIXME: Optimize
73  */
74 static void decode_colskip(uint8_t* plane, int width, int height, int stride,
75  GetBitContext *gb)
76 {
77  int x, y;
78 
79  for (x = 0; x < width; x++) {
80  if (!get_bits1(gb)) //colskip
81  for (y = 0; y < height; y++)
82  plane[y*stride] = 0;
83  else
84  for (y = 0; y < height; y++)
85  plane[y*stride] = get_bits1(gb);
86  plane ++;
87  }
88 }
89 
90 /** Decode a bitplane's bits
91  * @param data bitplane where to store the decode bits
92  * @param[out] raw_flag pointer to the flag indicating that this bitplane is not coded explicitly
93  * @param v VC-1 context for bit reading and logging
94  * @return Status
95  * @todo FIXME: Optimize
96  */
97 static int bitplane_decoding(uint8_t* data, int *raw_flag, VC1Context *v)
98 {
99  GetBitContext *gb = &v->s.gb;
100 
101  int imode, x, y, code, offset;
102  uint8_t invert, *planep = data;
103  int width, height, stride;
104 
105  width = v->s.mb_width;
106  height = v->s.mb_height >> v->field_mode;
107  stride = v->s.mb_stride;
108  invert = get_bits1(gb);
110 
111  *raw_flag = 0;
112  switch (imode) {
113  case IMODE_RAW:
114  //Data is actually read in the MB layer (same for all tests == "raw")
115  *raw_flag = 1; //invert ignored
116  return invert;
117  case IMODE_DIFF2:
118  case IMODE_NORM2:
119  if ((height * width) & 1) {
120  *planep++ = get_bits1(gb);
121  y = offset = 1;
122  if (offset == width) {
123  offset = 0;
124  planep += stride - width;
125  }
126  }
127  else
128  y = offset = 0;
129  // decode bitplane as one long line
130  for (; y < height * width; y += 2) {
132  *planep++ = code & 1;
133  offset++;
134  if (offset == width) {
135  offset = 0;
136  planep += stride - width;
137  }
138  *planep++ = code >> 1;
139  offset++;
140  if (offset == width) {
141  offset = 0;
142  planep += stride - width;
143  }
144  }
145  break;
146  case IMODE_DIFF6:
147  case IMODE_NORM6:
148  if (!(height % 3) && (width % 3)) { // use 2x3 decoding
149  for (y = 0; y < height; y += 3) {
150  for (x = width & 1; x < width; x += 2) {
152  if (code < 0) {
153  av_log(v->s.avctx, AV_LOG_DEBUG, "invalid NORM-6 VLC\n");
154  return -1;
155  }
156  planep[x + 0] = (code >> 0) & 1;
157  planep[x + 1] = (code >> 1) & 1;
158  planep[x + 0 + stride] = (code >> 2) & 1;
159  planep[x + 1 + stride] = (code >> 3) & 1;
160  planep[x + 0 + stride * 2] = (code >> 4) & 1;
161  planep[x + 1 + stride * 2] = (code >> 5) & 1;
162  }
163  planep += stride * 3;
164  }
165  if (width & 1)
166  decode_colskip(data, 1, height, stride, &v->s.gb);
167  } else { // 3x2
168  planep += (height & 1) * stride;
169  for (y = height & 1; y < height; y += 2) {
170  for (x = width % 3; x < width; x += 3) {
172  if (code < 0) {
173  av_log(v->s.avctx, AV_LOG_DEBUG, "invalid NORM-6 VLC\n");
174  return -1;
175  }
176  planep[x + 0] = (code >> 0) & 1;
177  planep[x + 1] = (code >> 1) & 1;
178  planep[x + 2] = (code >> 2) & 1;
179  planep[x + 0 + stride] = (code >> 3) & 1;
180  planep[x + 1 + stride] = (code >> 4) & 1;
181  planep[x + 2 + stride] = (code >> 5) & 1;
182  }
183  planep += stride * 2;
184  }
185  x = width % 3;
186  if (x)
187  decode_colskip(data, x, height, stride, &v->s.gb);
188  if (height & 1)
189  decode_rowskip(data + x, width - x, 1, stride, &v->s.gb);
190  }
191  break;
192  case IMODE_ROWSKIP:
193  decode_rowskip(data, width, height, stride, &v->s.gb);
194  break;
195  case IMODE_COLSKIP:
196  decode_colskip(data, width, height, stride, &v->s.gb);
197  break;
198  default:
199  break;
200  }
201 
202  /* Applying diff operator */
203  if (imode == IMODE_DIFF2 || imode == IMODE_DIFF6) {
204  planep = data;
205  planep[0] ^= invert;
206  for (x = 1; x < width; x++)
207  planep[x] ^= planep[x-1];
208  for (y = 1; y < height; y++) {
209  planep += stride;
210  planep[0] ^= planep[-stride];
211  for (x = 1; x < width; x++) {
212  if (planep[x-1] != planep[x-stride]) planep[x] ^= invert;
213  else planep[x] ^= planep[x-1];
214  }
215  }
216  } else if (invert) {
217  planep = data;
218  for (x = 0; x < stride * height; x++)
219  planep[x] = !planep[x]; //FIXME stride
220  }
221  return (imode << 1) + invert;
222 }
223 
224 /** @} */ //Bitplane group
225 
226 /***********************************************************************/
227 /** VOP Dquant decoding
228  * @param v VC-1 Context
229  */
231 {
232  GetBitContext *gb = &v->s.gb;
233  int pqdiff;
234 
235  //variable size
236  if (v->dquant != 2) {
237  v->dquantfrm = get_bits1(gb);
238  if (!v->dquantfrm)
239  return 0;
240 
241  v->dqprofile = get_bits(gb, 2);
242  switch (v->dqprofile) {
245  v->dqsbedge = get_bits(gb, 2);
246  break;
247  case DQPROFILE_ALL_MBS:
248  v->dqbilevel = get_bits1(gb);
249  if (!v->dqbilevel) {
250  v->halfpq = 0;
251  return 0;
252  }
253  default:
254  break; //Forbidden ?
255  }
256  }
257 
258  pqdiff = get_bits(gb, 3);
259  if (pqdiff == 7)
260  v->altpq = get_bits(gb, 5);
261  else
262  v->altpq = v->pq + pqdiff + 1;
263 
264  return 0;
265 }
266 
268 
269 /**
270  * Decode Simple/Main Profiles sequence header
271  * @see Figure 7-8, p16-17
272  * @param avctx Codec context
273  * @param gb GetBit context initialized from Codec context extra_data
274  * @return Status
275  */
277 {
278  av_log(avctx, AV_LOG_DEBUG, "Header: %0X\n", show_bits_long(gb, 32));
279  v->profile = get_bits(gb, 2);
280  if (v->profile == PROFILE_COMPLEX) {
281  av_log(avctx, AV_LOG_WARNING, "WMV3 Complex Profile is not fully supported\n");
282  }
283 
284  if (v->profile == PROFILE_ADVANCED) {
287  return decode_sequence_header_adv(v, gb);
288  } else {
289  v->chromaformat = 1;
292  v->res_y411 = get_bits1(gb);
293  v->res_sprite = get_bits1(gb);
294  if (v->res_y411) {
295  av_log(avctx, AV_LOG_ERROR,
296  "Old interlaced mode is not supported\n");
297  return -1;
298  }
299  }
300 
301  // (fps-2)/4 (->30)
302  v->frmrtq_postproc = get_bits(gb, 3); //common
303  // (bitrate-32kbps)/64kbps
304  v->bitrtq_postproc = get_bits(gb, 5); //common
305  v->s.loop_filter = get_bits1(gb); //common
306  if (v->s.loop_filter == 1 && v->profile == PROFILE_SIMPLE) {
307  av_log(avctx, AV_LOG_ERROR,
308  "LOOPFILTER shall not be enabled in Simple Profile\n");
309  }
311  v->s.loop_filter = 0;
312 
313  v->res_x8 = get_bits1(gb); //reserved
314  v->multires = get_bits1(gb);
315  v->res_fasttx = get_bits1(gb);
316  if (!v->res_fasttx) {
325  }
326 
327  v->fastuvmc = get_bits1(gb); //common
328  if (!v->profile && !v->fastuvmc) {
329  av_log(avctx, AV_LOG_ERROR,
330  "FASTUVMC unavailable in Simple Profile\n");
331  return -1;
332  }
333  v->extended_mv = get_bits1(gb); //common
334  if (!v->profile && v->extended_mv) {
335  av_log(avctx, AV_LOG_ERROR,
336  "Extended MVs unavailable in Simple Profile\n");
337  return -1;
338  }
339  v->dquant = get_bits(gb, 2); //common
340  v->vstransform = get_bits1(gb); //common
341 
342  v->res_transtab = get_bits1(gb);
343  if (v->res_transtab) {
344  av_log(avctx, AV_LOG_ERROR,
345  "1 for reserved RES_TRANSTAB is forbidden\n");
346  return -1;
347  }
348 
349  v->overlap = get_bits1(gb); //common
350 
351  v->resync_marker = get_bits1(gb);
352  v->rangered = get_bits1(gb);
353  if (v->rangered && v->profile == PROFILE_SIMPLE) {
354  av_log(avctx, AV_LOG_INFO,
355  "RANGERED should be set to 0 in Simple Profile\n");
356  }
357 
358  v->s.max_b_frames = avctx->max_b_frames = get_bits(gb, 3); //common
359  v->quantizer_mode = get_bits(gb, 2); //common
360 
361  v->finterpflag = get_bits1(gb); //common
362 
363  if (v->res_sprite) {
364  int w = get_bits(gb, 11);
365  int h = get_bits(gb, 11);
366  int ret = ff_set_dimensions(v->s.avctx, w, h);
367  if (ret < 0) {
368  av_log(avctx, AV_LOG_ERROR, "Failed to set dimensions %d %d\n", w, h);
369  return ret;
370  }
371  skip_bits(gb, 5); //frame rate
372  v->res_x8 = get_bits1(gb);
373  if (get_bits1(gb)) { // something to do with DC VLC selection
374  av_log(avctx, AV_LOG_ERROR, "Unsupported sprite feature\n");
375  return -1;
376  }
377  skip_bits(gb, 3); //slice code
378  v->res_rtm_flag = 0;
379  } else {
380  v->res_rtm_flag = get_bits1(gb); //reserved
381  }
382  //TODO: figure out what they mean (always 0x402F)
383  if (!v->res_fasttx)
384  skip_bits(gb, 16);
385  av_log(avctx, AV_LOG_DEBUG,
386  "Profile %i:\nfrmrtq_postproc=%i, bitrtq_postproc=%i\n"
387  "LoopFilter=%i, MultiRes=%i, FastUVMC=%i, Extended MV=%i\n"
388  "Rangered=%i, VSTransform=%i, Overlap=%i, SyncMarker=%i\n"
389  "DQuant=%i, Quantizer mode=%i, Max B-frames=%i\n",
391  v->s.loop_filter, v->multires, v->fastuvmc, v->extended_mv,
392  v->rangered, v->vstransform, v->overlap, v->resync_marker,
393  v->dquant, v->quantizer_mode, avctx->max_b_frames);
394  return 0;
395 }
396 
398 {
399  v->res_rtm_flag = 1;
400  v->level = get_bits(gb, 3);
401  if (v->level >= 5) {
402  av_log(v->s.avctx, AV_LOG_ERROR, "Reserved LEVEL %i\n",v->level);
403  }
404  v->chromaformat = get_bits(gb, 2);
405  if (v->chromaformat != 1) {
407  "Only 4:2:0 chroma format supported\n");
408  return -1;
409  }
410 
411  // (fps-2)/4 (->30)
412  v->frmrtq_postproc = get_bits(gb, 3); //common
413  // (bitrate-32kbps)/64kbps
414  v->bitrtq_postproc = get_bits(gb, 5); //common
415  v->postprocflag = get_bits1(gb); //common
416 
417  v->max_coded_width = (get_bits(gb, 12) + 1) << 1;
418  v->max_coded_height = (get_bits(gb, 12) + 1) << 1;
419  v->broadcast = get_bits1(gb);
420  v->interlace = get_bits1(gb);
421  v->tfcntrflag = get_bits1(gb);
422  v->finterpflag = get_bits1(gb);
423  skip_bits1(gb); // reserved
424 
426  "Advanced Profile level %i:\nfrmrtq_postproc=%i, bitrtq_postproc=%i\n"
427  "LoopFilter=%i, ChromaFormat=%i, Pulldown=%i, Interlace: %i\n"
428  "TFCTRflag=%i, FINTERPflag=%i\n",
431  v->tfcntrflag, v->finterpflag);
432 
433  v->psf = get_bits1(gb);
434  if (v->psf) { //PsF, 6.1.13
435  av_log(v->s.avctx, AV_LOG_ERROR, "Progressive Segmented Frame mode: not supported (yet)\n");
436  return -1;
437  }
438  v->s.max_b_frames = v->s.avctx->max_b_frames = 7;
439  if (get_bits1(gb)) { //Display Info - decoding is not affected by it
440  int w, h, ar = 0;
441  av_log(v->s.avctx, AV_LOG_DEBUG, "Display extended info:\n");
442  w = get_bits(gb, 14) + 1;
443  h = get_bits(gb, 14) + 1;
444  av_log(v->s.avctx, AV_LOG_DEBUG, "Display dimensions: %ix%i\n", w, h);
445  if (get_bits1(gb))
446  ar = get_bits(gb, 4);
447  if (ar && ar < 14) {
449  } else if (ar == 15) {
450  w = get_bits(gb, 8) + 1;
451  h = get_bits(gb, 8) + 1;
452  v->s.avctx->sample_aspect_ratio = (AVRational){w, h};
453  } else {
454  if (v->s.avctx->width > v->max_coded_width ||
455  v->s.avctx->height > v->max_coded_height) {
456  avpriv_request_sample(v->s.avctx, "Huge resolution");
457  } else
460  v->s.avctx->height * w,
461  v->s.avctx->width * h,
462  1 << 30);
463  }
465  av_log(v->s.avctx, AV_LOG_DEBUG, "Aspect: %i:%i\n",
468 
469  if (get_bits1(gb)) { //framerate stuff
470  if (get_bits1(gb)) {
471  v->s.avctx->framerate.den = 32;
472  v->s.avctx->framerate.num = get_bits(gb, 16) + 1;
473  } else {
474  int nr, dr;
475  nr = get_bits(gb, 8);
476  dr = get_bits(gb, 4);
477  if (nr > 0 && nr < 8 && dr > 0 && dr < 3) {
478  v->s.avctx->framerate.den = ff_vc1_fps_dr[dr - 1];
479  v->s.avctx->framerate.num = ff_vc1_fps_nr[nr - 1] * 1000;
480  }
481  }
482  if (v->broadcast) { // Pulldown may be present
483  v->s.avctx->ticks_per_frame = 2;
484  }
485  }
486 
487  if (get_bits1(gb)) {
488  v->color_prim = get_bits(gb, 8);
489  v->transfer_char = get_bits(gb, 8);
490  v->matrix_coef = get_bits(gb, 8);
491  }
492  }
493 
494  v->hrd_param_flag = get_bits1(gb);
495  if (v->hrd_param_flag) {
496  int i;
497  v->hrd_num_leaky_buckets = get_bits(gb, 5);
498  skip_bits(gb, 4); //bitrate exponent
499  skip_bits(gb, 4); //buffer size exponent
500  for (i = 0; i < v->hrd_num_leaky_buckets; i++) {
501  skip_bits(gb, 16); //hrd_rate[n]
502  skip_bits(gb, 16); //hrd_buffer[n]
503  }
504  }
505  return 0;
506 }
507 
509 {
510  int i;
511  int w,h;
512  int ret;
513 
514  av_log(avctx, AV_LOG_DEBUG, "Entry point: %08X\n", show_bits_long(gb, 32));
515  v->broken_link = get_bits1(gb);
516  v->closed_entry = get_bits1(gb);
517  v->panscanflag = get_bits1(gb);
518  v->refdist_flag = get_bits1(gb);
519  v->s.loop_filter = get_bits1(gb);
521  v->s.loop_filter = 0;
522  v->fastuvmc = get_bits1(gb);
523  v->extended_mv = get_bits1(gb);
524  v->dquant = get_bits(gb, 2);
525  v->vstransform = get_bits1(gb);
526  v->overlap = get_bits1(gb);
527  v->quantizer_mode = get_bits(gb, 2);
528 
529  if (v->hrd_param_flag) {
530  for (i = 0; i < v->hrd_num_leaky_buckets; i++) {
531  skip_bits(gb, 8); //hrd_full[n]
532  }
533  }
534 
535  if(get_bits1(gb)){
536  w = (get_bits(gb, 12)+1)<<1;
537  h = (get_bits(gb, 12)+1)<<1;
538  } else {
539  w = v->max_coded_width;
540  h = v->max_coded_height;
541  }
542  if ((ret = ff_set_dimensions(avctx, w, h)) < 0) {
543  av_log(avctx, AV_LOG_ERROR, "Failed to set dimensions %d %d\n", w, h);
544  return ret;
545  }
546 
547  if (v->extended_mv)
548  v->extended_dmv = get_bits1(gb);
549  if ((v->range_mapy_flag = get_bits1(gb))) {
550  av_log(avctx, AV_LOG_ERROR, "Luma scaling is not supported, expect wrong picture\n");
551  v->range_mapy = get_bits(gb, 3);
552  }
553  if ((v->range_mapuv_flag = get_bits1(gb))) {
554  av_log(avctx, AV_LOG_ERROR, "Chroma scaling is not supported, expect wrong picture\n");
555  v->range_mapuv = get_bits(gb, 3);
556  }
557 
558  av_log(avctx, AV_LOG_DEBUG, "Entry point info:\n"
559  "BrokenLink=%i, ClosedEntry=%i, PanscanFlag=%i\n"
560  "RefDist=%i, Postproc=%i, FastUVMC=%i, ExtMV=%i\n"
561  "DQuant=%i, VSTransform=%i, Overlap=%i, Qmode=%i\n",
564 
565  return 0;
566 }
567 
568 /* fill lookup tables for intensity compensation */
569 #define INIT_LUT(lumscale, lumshift, luty, lutuv, chain) do { \
570  int scale, shift, i; \
571  if (!lumscale) { \
572  scale = -64; \
573  shift = (255 - lumshift * 2) * 64; \
574  if (lumshift > 31) \
575  shift += 128 << 6; \
576  } else { \
577  scale = lumscale + 32; \
578  if (lumshift > 31) \
579  shift = (lumshift - 64) * 64; \
580  else \
581  shift = lumshift << 6; \
582  } \
583  for (i = 0; i < 256; i++) { \
584  int iy = chain ? luty[i] : i; \
585  int iu = chain ? lutuv[i] : i; \
586  luty[i] = av_clip_uint8((scale * iy + shift + 32) >> 6); \
587  lutuv[i] = av_clip_uint8((scale * (iu - 128) + 128*64 + 32) >> 6);\
588  } \
589  } while(0)
590 
591 static void rotate_luts(VC1Context *v)
592 {
593 #define ROTATE(DEF, L, N, C, A) do { \
594  if (v->s.pict_type == AV_PICTURE_TYPE_BI || v->s.pict_type == AV_PICTURE_TYPE_B) { \
595  C = A; \
596  } else { \
597  DEF; \
598  memcpy(&tmp, L , sizeof(tmp)); \
599  memcpy(L , N , sizeof(tmp)); \
600  memcpy(N , &tmp, sizeof(tmp)); \
601  C = N; \
602  } \
603  } while(0)
604 
605  ROTATE(int tmp, &v->last_use_ic, &v->next_use_ic, v->curr_use_ic, &v->aux_use_ic);
606  ROTATE(uint8_t tmp[2][256], v->last_luty, v->next_luty, v->curr_luty, v->aux_luty);
607  ROTATE(uint8_t tmp[2][256], v->last_lutuv, v->next_lutuv, v->curr_lutuv, v->aux_lutuv);
608 
609  INIT_LUT(32, 0, v->curr_luty[0], v->curr_lutuv[0], 0);
610  INIT_LUT(32, 0, v->curr_luty[1], v->curr_lutuv[1], 0);
611  *v->curr_use_ic = 0;
612 }
613 
615  int bfraction_lut_index = get_vlc2(gb, ff_vc1_bfraction_vlc.table, VC1_BFRACTION_VLC_BITS, 1);
616 
617  if (bfraction_lut_index == 21 || bfraction_lut_index < 0) {
618  av_log(v->s.avctx, AV_LOG_ERROR, "bfraction invalid\n");
619  return AVERROR_INVALIDDATA;
620  }
621  v->bfraction_lut_index = bfraction_lut_index;
623  return 0;
624 }
625 
627 {
628  int pqindex, lowquant, status;
629 
630  v->field_mode = 0;
631  v->fcm = PROGRESSIVE;
632  if (v->finterpflag)
633  v->interpfrm = get_bits1(gb);
634  if (!v->s.avctx->codec)
635  return -1;
636  if (v->s.avctx->codec_id == AV_CODEC_ID_MSS2)
637  v->respic =
638  v->rangered =
639  v->multires = get_bits(gb, 2) == 1;
640  else
641  skip_bits(gb, 2); //framecnt unused
642  v->rangeredfrm = 0;
643  if (v->rangered)
644  v->rangeredfrm = get_bits1(gb);
645  if (get_bits1(gb)) {
647  } else {
648  if (v->s.avctx->max_b_frames && !get_bits1(gb)) {
650  } else
652  }
653 
654  v->bi_type = 0;
655  if (v->s.pict_type == AV_PICTURE_TYPE_B) {
656  if (read_bfraction(v, gb) < 0)
657  return AVERROR_INVALIDDATA;
658  if (v->bfraction == 0) {
660  }
661  }
663  skip_bits(gb, 7); // skip buffer fullness
664 
665  if (v->parse_only)
666  return 0;
667 
668  /* calculate RND */
670  v->rnd = 1;
671  if (v->s.pict_type == AV_PICTURE_TYPE_P)
672  v->rnd ^= 1;
673 
674  /* Quantizer stuff */
675  pqindex = get_bits(gb, 5);
676  if (!pqindex)
677  return -1;
679  v->pq = ff_vc1_pquant_table[0][pqindex];
680  else
681  v->pq = ff_vc1_pquant_table[1][pqindex];
682  v->pqindex = pqindex;
683  if (pqindex < 9)
684  v->halfpq = get_bits1(gb);
685  else
686  v->halfpq = 0;
687  switch (v->quantizer_mode) {
689  v->pquantizer = pqindex < 9;
690  break;
691  case QUANT_NON_UNIFORM:
692  v->pquantizer = 0;
693  break;
695  v->pquantizer = get_bits1(gb);
696  break;
697  default:
698  v->pquantizer = 1;
699  break;
700  }
701  v->dquantfrm = 0;
702  if (v->extended_mv == 1)
703  v->mvrange = get_unary(gb, 0, 3);
704  v->k_x = v->mvrange + 9 + (v->mvrange >> 1); //k_x can be 9 10 12 13
705  v->k_y = v->mvrange + 8; //k_y can be 8 9 10 11
706  v->range_x = 1 << (v->k_x - 1);
707  v->range_y = 1 << (v->k_y - 1);
708  if (v->multires && v->s.pict_type != AV_PICTURE_TYPE_B)
709  v->respic = get_bits(gb, 2);
710 
711  if (v->res_x8 && (v->s.pict_type == AV_PICTURE_TYPE_I || v->s.pict_type == AV_PICTURE_TYPE_BI)) {
712  v->x8_type = get_bits1(gb);
713  } else
714  v->x8_type = 0;
715  ff_dlog(v->s.avctx, "%c Frame: QP=[%i]%i (+%i/2) %i\n",
716  (v->s.pict_type == AV_PICTURE_TYPE_P) ? 'P' : ((v->s.pict_type == AV_PICTURE_TYPE_I) ? 'I' : 'B'),
717  pqindex, v->pq, v->halfpq, v->rangeredfrm);
718 
719  if (v->first_pic_header_flag)
720  rotate_luts(v);
721 
722  switch (v->s.pict_type) {
723  case AV_PICTURE_TYPE_P:
724  v->tt_index = (v->pq > 4) + (v->pq > 12);
725 
726  lowquant = (v->pq > 12) ? 0 : 1;
727  v->mv_mode = ff_vc1_mv_pmode_table[lowquant][get_unary(gb, 1, 4)];
728  if (v->mv_mode == MV_PMODE_INTENSITY_COMP) {
729  v->mv_mode2 = ff_vc1_mv_pmode_table2[lowquant][get_unary(gb, 1, 3)];
730  v->lumscale = get_bits(gb, 6);
731  v->lumshift = get_bits(gb, 6);
732  v->last_use_ic = 1;
733  /* fill lookup tables for intensity compensation */
734  INIT_LUT(v->lumscale, v->lumshift, v->last_luty[0], v->last_lutuv[0], 1);
735  INIT_LUT(v->lumscale, v->lumshift, v->last_luty[1], v->last_lutuv[1], 1);
736  }
737  v->qs_last = v->s.quarter_sample;
738  if (v->mv_mode == MV_PMODE_INTENSITY_COMP) {
742  } else {
745  v->s.mspel = (v->mv_mode != MV_PMODE_1MV_HPEL_BILIN);
746  }
747 
748  if ((v->mv_mode == MV_PMODE_INTENSITY_COMP &&
749  v->mv_mode2 == MV_PMODE_MIXED_MV) ||
750  v->mv_mode == MV_PMODE_MIXED_MV) {
752  if (status < 0)
753  return -1;
754  av_log(v->s.avctx, AV_LOG_DEBUG, "MB MV Type plane encoding: "
755  "Imode: %i, Invert: %i\n", status>>1, status&1);
756  } else {
757  v->mv_type_is_raw = 0;
758  memset(v->mv_type_mb_plane, 0, v->s.mb_stride * v->s.mb_height);
759  }
760  status = bitplane_decoding(v->s.mbskip_table, &v->skip_is_raw, v);
761  if (status < 0)
762  return -1;
763  av_log(v->s.avctx, AV_LOG_DEBUG, "MB Skip plane encoding: "
764  "Imode: %i, Invert: %i\n", status>>1, status&1);
765 
766  /* Hopefully this is correct for P-frames */
767  v->s.mv_table_index = get_bits(gb, 2); //but using ff_vc1_ tables
768  v->cbptab = get_bits(gb, 2);
770 
771  if (v->dquant) {
772  av_log(v->s.avctx, AV_LOG_DEBUG, "VOP DQuant info\n");
774  }
775 
776  if (v->vstransform) {
777  v->ttmbf = get_bits1(gb);
778  if (v->ttmbf) {
779  v->ttfrm = ff_vc1_ttfrm_to_tt[get_bits(gb, 2)];
780  } else
781  v->ttfrm = 0; //FIXME Is that so ?
782  } else {
783  v->ttmbf = 1;
784  v->ttfrm = TT_8X8;
785  }
786  break;
787  case AV_PICTURE_TYPE_B:
788  v->tt_index = (v->pq > 4) + (v->pq > 12);
789 
791  v->qs_last = v->s.quarter_sample;
792  v->s.quarter_sample = (v->mv_mode == MV_PMODE_1MV);
793  v->s.mspel = v->s.quarter_sample;
794 
795  status = bitplane_decoding(v->direct_mb_plane, &v->dmb_is_raw, v);
796  if (status < 0)
797  return -1;
798  av_log(v->s.avctx, AV_LOG_DEBUG, "MB Direct Type plane encoding: "
799  "Imode: %i, Invert: %i\n", status>>1, status&1);
800  status = bitplane_decoding(v->s.mbskip_table, &v->skip_is_raw, v);
801  if (status < 0)
802  return -1;
803  av_log(v->s.avctx, AV_LOG_DEBUG, "MB Skip plane encoding: "
804  "Imode: %i, Invert: %i\n", status>>1, status&1);
805 
806  v->s.mv_table_index = get_bits(gb, 2);
807  v->cbptab = get_bits(gb, 2);
809 
810  if (v->dquant) {
811  av_log(v->s.avctx, AV_LOG_DEBUG, "VOP DQuant info\n");
813  }
814 
815  if (v->vstransform) {
816  v->ttmbf = get_bits1(gb);
817  if (v->ttmbf) {
818  v->ttfrm = ff_vc1_ttfrm_to_tt[get_bits(gb, 2)];
819  } else
820  v->ttfrm = 0;
821  } else {
822  v->ttmbf = 1;
823  v->ttfrm = TT_8X8;
824  }
825  break;
826  }
827 
828  if (!v->x8_type) {
829  /* AC Syntax */
830  v->c_ac_table_index = decode012(gb);
832  v->y_ac_table_index = decode012(gb);
833  }
834  /* DC Syntax */
835  v->s.dc_table_index = get_bits1(gb);
836  }
837 
838  if (v->s.pict_type == AV_PICTURE_TYPE_BI) {
840  v->bi_type = 1;
841  }
842  return 0;
843 }
844 
846 {
847  int pqindex, lowquant;
848  int status;
849  int field_mode, fcm;
850 
851  v->numref = 0;
852  v->p_frame_skipped = 0;
853  if (v->second_field) {
854  if (v->fcm != ILACE_FIELD || v->field_mode!=1)
855  return -1;
856  if (v->fptype & 4)
858  else
861  if (!v->pic_header_flag)
862  goto parse_common_info;
863  }
864 
865  field_mode = 0;
866  if (v->interlace) {
867  fcm = decode012(gb);
868  if (fcm) {
869  if (fcm == ILACE_FIELD)
870  field_mode = 1;
871  }
872  } else {
873  fcm = PROGRESSIVE;
874  }
875  if (!v->first_pic_header_flag && v->field_mode != field_mode)
876  return AVERROR_INVALIDDATA;
877  v->field_mode = field_mode;
878  v->fcm = fcm;
879 
880  av_assert0( v->s.mb_height == v->s.height + 15 >> 4
881  || v->s.mb_height == FFALIGN(v->s.height + 15 >> 4, 2));
882  if (v->field_mode) {
883  v->s.mb_height = FFALIGN(v->s.height + 15 >> 4, 2);
884  v->fptype = get_bits(gb, 3);
885  if (v->fptype & 4) // B-picture
887  else
889  } else {
890  v->s.mb_height = v->s.height + 15 >> 4;
891  switch (get_unary(gb, 0, 4)) {
892  case 0:
894  break;
895  case 1:
897  break;
898  case 2:
900  break;
901  case 3:
903  break;
904  case 4:
905  v->s.pict_type = AV_PICTURE_TYPE_P; // skipped pic
906  v->p_frame_skipped = 1;
907  break;
908  }
909  }
910  if (v->tfcntrflag)
911  skip_bits(gb, 8);
912  if (v->broadcast) {
913  if (!v->interlace || v->psf) {
914  v->rptfrm = get_bits(gb, 2);
915  } else {
916  v->tff = get_bits1(gb);
917  v->rff = get_bits1(gb);
918  }
919  } else {
920  v->tff = 1;
921  }
922  if (v->panscanflag) {
923  avpriv_report_missing_feature(v->s.avctx, "Pan-scan");
924  //...
925  }
926  if (v->p_frame_skipped) {
927  return 0;
928  }
929  v->rnd = get_bits1(gb);
930  if (v->interlace)
931  v->uvsamp = get_bits1(gb);
933  return 0; //parsing only, vlc tables havnt been allocated
934  if (v->field_mode) {
935  if (!v->refdist_flag)
936  v->refdist = 0;
937  else if ((v->s.pict_type != AV_PICTURE_TYPE_B) && (v->s.pict_type != AV_PICTURE_TYPE_BI)) {
938  v->refdist = get_bits(gb, 2);
939  if (v->refdist == 3)
940  v->refdist += get_unary(gb, 0, 14);
941  if (v->refdist > 16)
942  return AVERROR_INVALIDDATA;
943  }
944  if ((v->s.pict_type == AV_PICTURE_TYPE_B) || (v->s.pict_type == AV_PICTURE_TYPE_BI)) {
945  if (read_bfraction(v, gb) < 0)
946  return AVERROR_INVALIDDATA;
947  v->frfd = (v->bfraction * v->refdist) >> 8;
948  v->brfd = v->refdist - v->frfd - 1;
949  if (v->brfd < 0)
950  v->brfd = 0;
951  }
952  goto parse_common_info;
953  }
954  if (v->fcm == PROGRESSIVE) {
955  if (v->finterpflag)
956  v->interpfrm = get_bits1(gb);
957  if (v->s.pict_type == AV_PICTURE_TYPE_B) {
958  if (read_bfraction(v, gb) < 0)
959  return AVERROR_INVALIDDATA;
960  if (v->bfraction == 0) {
961  v->s.pict_type = AV_PICTURE_TYPE_BI; /* XXX: should not happen here */
962  }
963  }
964  }
965 
966  parse_common_info:
967  if (v->field_mode)
968  v->cur_field_type = !(v->tff ^ v->second_field);
969  pqindex = get_bits(gb, 5);
970  if (!pqindex)
971  return -1;
973  v->pq = ff_vc1_pquant_table[0][pqindex];
974  else
975  v->pq = ff_vc1_pquant_table[1][pqindex];
976  v->pqindex = pqindex;
977  if (pqindex < 9)
978  v->halfpq = get_bits1(gb);
979  else
980  v->halfpq = 0;
981  switch (v->quantizer_mode) {
983  v->pquantizer = pqindex < 9;
984  break;
985  case QUANT_NON_UNIFORM:
986  v->pquantizer = 0;
987  break;
989  v->pquantizer = get_bits1(gb);
990  break;
991  default:
992  v->pquantizer = 1;
993  break;
994  }
995  v->dquantfrm = 0;
996  if (v->postprocflag)
997  v->postproc = get_bits(gb, 2);
998 
999  if (v->parse_only)
1000  return 0;
1001 
1002  if (v->first_pic_header_flag)
1003  rotate_luts(v);
1004 
1005  switch (v->s.pict_type) {
1006  case AV_PICTURE_TYPE_I:
1007  case AV_PICTURE_TYPE_BI:
1008  if (v->fcm == ILACE_FRAME) { //interlace frame picture
1009  status = bitplane_decoding(v->fieldtx_plane, &v->fieldtx_is_raw, v);
1010  if (status < 0)
1011  return -1;
1012  av_log(v->s.avctx, AV_LOG_DEBUG, "FIELDTX plane encoding: "
1013  "Imode: %i, Invert: %i\n", status>>1, status&1);
1014  } else
1015  v->fieldtx_is_raw = 0;
1016  status = bitplane_decoding(v->acpred_plane, &v->acpred_is_raw, v);
1017  if (status < 0)
1018  return -1;
1019  av_log(v->s.avctx, AV_LOG_DEBUG, "ACPRED plane encoding: "
1020  "Imode: %i, Invert: %i\n", status>>1, status&1);
1021  v->condover = CONDOVER_NONE;
1022  if (v->overlap && v->pq <= 8) {
1023  v->condover = decode012(gb);
1024  if (v->condover == CONDOVER_SELECT) {
1025  status = bitplane_decoding(v->over_flags_plane, &v->overflg_is_raw, v);
1026  if (status < 0)
1027  return -1;
1028  av_log(v->s.avctx, AV_LOG_DEBUG, "CONDOVER plane encoding: "
1029  "Imode: %i, Invert: %i\n", status>>1, status&1);
1030  }
1031  }
1032  break;
1033  case AV_PICTURE_TYPE_P:
1034  if (v->field_mode) {
1035  v->numref = get_bits1(gb);
1036  if (!v->numref) {
1037  v->reffield = get_bits1(gb);
1038  v->ref_field_type[0] = v->reffield ^ !v->cur_field_type;
1039  }
1040  }
1041  if (v->extended_mv)
1042  v->mvrange = get_unary(gb, 0, 3);
1043  else
1044  v->mvrange = 0;
1045  if (v->interlace) {
1046  if (v->extended_dmv)
1047  v->dmvrange = get_unary(gb, 0, 3);
1048  else
1049  v->dmvrange = 0;
1050  if (v->fcm == ILACE_FRAME) { // interlaced frame picture
1051  v->fourmvswitch = get_bits1(gb);
1052  v->intcomp = get_bits1(gb);
1053  if (v->intcomp) {
1054  v->lumscale = get_bits(gb, 6);
1055  v->lumshift = get_bits(gb, 6);
1056  INIT_LUT(v->lumscale, v->lumshift, v->last_luty[0], v->last_lutuv[0], 1);
1057  INIT_LUT(v->lumscale, v->lumshift, v->last_luty[1], v->last_lutuv[1], 1);
1058  v->last_use_ic = 1;
1059  }
1060  status = bitplane_decoding(v->s.mbskip_table, &v->skip_is_raw, v);
1061  if (status < 0)
1062  return -1;
1063  av_log(v->s.avctx, AV_LOG_DEBUG, "SKIPMB plane encoding: "
1064  "Imode: %i, Invert: %i\n", status>>1, status&1);
1065  v->mbmodetab = get_bits(gb, 2);
1066  if (v->fourmvswitch)
1068  else
1070  v->imvtab = get_bits(gb, 2);
1072  // interlaced p-picture cbpcy range is [1, 63]
1073  v->icbptab = get_bits(gb, 3);
1075  v->twomvbptab = get_bits(gb, 2);
1077  if (v->fourmvswitch) {
1078  v->fourmvbptab = get_bits(gb, 2);
1080  }
1081  }
1082  }
1083  v->k_x = v->mvrange + 9 + (v->mvrange >> 1); //k_x can be 9 10 12 13
1084  v->k_y = v->mvrange + 8; //k_y can be 8 9 10 11
1085  v->range_x = 1 << (v->k_x - 1);
1086  v->range_y = 1 << (v->k_y - 1);
1087 
1088  v->tt_index = (v->pq > 4) + (v->pq > 12);
1089  if (v->fcm != ILACE_FRAME) {
1090  int mvmode;
1091  mvmode = get_unary(gb, 1, 4);
1092  lowquant = (v->pq > 12) ? 0 : 1;
1093  v->mv_mode = ff_vc1_mv_pmode_table[lowquant][mvmode];
1094  if (v->mv_mode == MV_PMODE_INTENSITY_COMP) {
1095  int mvmode2;
1096  mvmode2 = get_unary(gb, 1, 3);
1097  v->mv_mode2 = ff_vc1_mv_pmode_table2[lowquant][mvmode2];
1098  if (v->field_mode) {
1099  v->intcompfield = decode210(gb) ^ 3;
1100  } else
1101  v->intcompfield = 3;
1102 
1103  v->lumscale2 = v->lumscale = 32;
1104  v->lumshift2 = v->lumshift = 0;
1105  if (v->intcompfield & 1) {
1106  v->lumscale = get_bits(gb, 6);
1107  v->lumshift = get_bits(gb, 6);
1108  }
1109  if ((v->intcompfield & 2) && v->field_mode) {
1110  v->lumscale2 = get_bits(gb, 6);
1111  v->lumshift2 = get_bits(gb, 6);
1112  } else if(!v->field_mode) {
1113  v->lumscale2 = v->lumscale;
1114  v->lumshift2 = v->lumshift;
1115  }
1116  if (v->field_mode && v->second_field) {
1117  if (v->cur_field_type) {
1118  INIT_LUT(v->lumscale , v->lumshift , v->curr_luty[v->cur_field_type^1], v->curr_lutuv[v->cur_field_type^1], 0);
1120  } else {
1123  }
1124  v->next_use_ic = *v->curr_use_ic = 1;
1125  } else {
1126  INIT_LUT(v->lumscale , v->lumshift , v->last_luty[0], v->last_lutuv[0], 1);
1127  INIT_LUT(v->lumscale2, v->lumshift2, v->last_luty[1], v->last_lutuv[1], 1);
1128  }
1129  v->last_use_ic = 1;
1130  }
1131  v->qs_last = v->s.quarter_sample;
1132  if (v->mv_mode == MV_PMODE_INTENSITY_COMP) {
1135  v->s.mspel = (v->mv_mode2 != MV_PMODE_1MV_HPEL_BILIN);
1136  } else {
1137  v->s.quarter_sample = (v->mv_mode != MV_PMODE_1MV_HPEL &&
1139  v->s.mspel = (v->mv_mode != MV_PMODE_1MV_HPEL_BILIN);
1140  }
1141  }
1142  if (v->fcm == PROGRESSIVE) { // progressive
1143  if ((v->mv_mode == MV_PMODE_INTENSITY_COMP &&
1145  || v->mv_mode == MV_PMODE_MIXED_MV) {
1146  status = bitplane_decoding(v->mv_type_mb_plane, &v->mv_type_is_raw, v);
1147  if (status < 0)
1148  return -1;
1149  av_log(v->s.avctx, AV_LOG_DEBUG, "MB MV Type plane encoding: "
1150  "Imode: %i, Invert: %i\n", status>>1, status&1);
1151  } else {
1152  v->mv_type_is_raw = 0;
1153  memset(v->mv_type_mb_plane, 0, v->s.mb_stride * v->s.mb_height);
1154  }
1155  status = bitplane_decoding(v->s.mbskip_table, &v->skip_is_raw, v);
1156  if (status < 0)
1157  return -1;
1158  av_log(v->s.avctx, AV_LOG_DEBUG, "MB Skip plane encoding: "
1159  "Imode: %i, Invert: %i\n", status>>1, status&1);
1160 
1161  /* Hopefully this is correct for P-frames */
1162  v->s.mv_table_index = get_bits(gb, 2); //but using ff_vc1_ tables
1163  v->cbptab = get_bits(gb, 2);
1165  } else if (v->fcm == ILACE_FRAME) { // frame interlaced
1166  v->qs_last = v->s.quarter_sample;
1167  v->s.quarter_sample = 1;
1168  v->s.mspel = 1;
1169  } else { // field interlaced
1170  v->mbmodetab = get_bits(gb, 3);
1171  v->imvtab = get_bits(gb, 2 + v->numref);
1172  if (!v->numref)
1174  else
1176  v->icbptab = get_bits(gb, 3);
1178  if ((v->mv_mode == MV_PMODE_INTENSITY_COMP &&
1180  v->fourmvbptab = get_bits(gb, 2);
1183  } else {
1185  }
1186  }
1187  if (v->dquant) {
1188  av_log(v->s.avctx, AV_LOG_DEBUG, "VOP DQuant info\n");
1190  }
1191 
1192  if (v->vstransform) {
1193  v->ttmbf = get_bits1(gb);
1194  if (v->ttmbf) {
1195  v->ttfrm = ff_vc1_ttfrm_to_tt[get_bits(gb, 2)];
1196  } else
1197  v->ttfrm = 0; //FIXME Is that so ?
1198  } else {
1199  v->ttmbf = 1;
1200  v->ttfrm = TT_8X8;
1201  }
1202  break;
1203  case AV_PICTURE_TYPE_B:
1204  if (v->fcm == ILACE_FRAME) {
1205  if (read_bfraction(v, gb) < 0)
1206  return AVERROR_INVALIDDATA;
1207  if (v->bfraction == 0) {
1208  return -1;
1209  }
1210  }
1211  if (v->extended_mv)
1212  v->mvrange = get_unary(gb, 0, 3);
1213  else
1214  v->mvrange = 0;
1215  v->k_x = v->mvrange + 9 + (v->mvrange >> 1); //k_x can be 9 10 12 13
1216  v->k_y = v->mvrange + 8; //k_y can be 8 9 10 11
1217  v->range_x = 1 << (v->k_x - 1);
1218  v->range_y = 1 << (v->k_y - 1);
1219 
1220  v->tt_index = (v->pq > 4) + (v->pq > 12);
1221 
1222  if (v->field_mode) {
1223  int mvmode;
1224  av_log(v->s.avctx, AV_LOG_DEBUG, "B Fields\n");
1225  if (v->extended_dmv)
1226  v->dmvrange = get_unary(gb, 0, 3);
1227  mvmode = get_unary(gb, 1, 3);
1228  lowquant = (v->pq > 12) ? 0 : 1;
1229  v->mv_mode = ff_vc1_mv_pmode_table2[lowquant][mvmode];
1230  v->qs_last = v->s.quarter_sample;
1232  v->s.mspel = (v->mv_mode != MV_PMODE_1MV_HPEL_BILIN);
1233  status = bitplane_decoding(v->forward_mb_plane, &v->fmb_is_raw, v);
1234  if (status < 0)
1235  return -1;
1236  av_log(v->s.avctx, AV_LOG_DEBUG, "MB Forward Type plane encoding: "
1237  "Imode: %i, Invert: %i\n", status>>1, status&1);
1238  v->mbmodetab = get_bits(gb, 3);
1239  if (v->mv_mode == MV_PMODE_MIXED_MV)
1241  else
1243  v->imvtab = get_bits(gb, 3);
1245  v->icbptab = get_bits(gb, 3);
1247  if (v->mv_mode == MV_PMODE_MIXED_MV) {
1248  v->fourmvbptab = get_bits(gb, 2);
1250  }
1251  v->numref = 1; // interlaced field B pictures are always 2-ref
1252  } else if (v->fcm == ILACE_FRAME) {
1253  if (v->extended_dmv)
1254  v->dmvrange = get_unary(gb, 0, 3);
1255  if (get_bits1(gb)) /* intcomp - present but shall always be 0 */
1256  av_log(v->s.avctx, AV_LOG_WARNING, "Intensity compensation set for B picture\n");
1257  v->intcomp = 0;
1258  v->mv_mode = MV_PMODE_1MV;
1259  v->fourmvswitch = 0;
1260  v->qs_last = v->s.quarter_sample;
1261  v->s.quarter_sample = 1;
1262  v->s.mspel = 1;
1263  status = bitplane_decoding(v->direct_mb_plane, &v->dmb_is_raw, v);
1264  if (status < 0)
1265  return -1;
1266  av_log(v->s.avctx, AV_LOG_DEBUG, "MB Direct Type plane encoding: "
1267  "Imode: %i, Invert: %i\n", status>>1, status&1);
1268  status = bitplane_decoding(v->s.mbskip_table, &v->skip_is_raw, v);
1269  if (status < 0)
1270  return -1;
1271  av_log(v->s.avctx, AV_LOG_DEBUG, "MB Skip plane encoding: "
1272  "Imode: %i, Invert: %i\n", status>>1, status&1);
1273  v->mbmodetab = get_bits(gb, 2);
1275  v->imvtab = get_bits(gb, 2);
1277  // interlaced p/b-picture cbpcy range is [1, 63]
1278  v->icbptab = get_bits(gb, 3);
1280  v->twomvbptab = get_bits(gb, 2);
1282  v->fourmvbptab = get_bits(gb, 2);
1284  } else {
1286  v->qs_last = v->s.quarter_sample;
1287  v->s.quarter_sample = (v->mv_mode == MV_PMODE_1MV);
1288  v->s.mspel = v->s.quarter_sample;
1289  status = bitplane_decoding(v->direct_mb_plane, &v->dmb_is_raw, v);
1290  if (status < 0)
1291  return -1;
1292  av_log(v->s.avctx, AV_LOG_DEBUG, "MB Direct Type plane encoding: "
1293  "Imode: %i, Invert: %i\n", status>>1, status&1);
1294  status = bitplane_decoding(v->s.mbskip_table, &v->skip_is_raw, v);
1295  if (status < 0)
1296  return -1;
1297  av_log(v->s.avctx, AV_LOG_DEBUG, "MB Skip plane encoding: "
1298  "Imode: %i, Invert: %i\n", status>>1, status&1);
1299  v->s.mv_table_index = get_bits(gb, 2);
1300  v->cbptab = get_bits(gb, 2);
1302  }
1303 
1304  if (v->dquant) {
1305  av_log(v->s.avctx, AV_LOG_DEBUG, "VOP DQuant info\n");
1307  }
1308 
1309  if (v->vstransform) {
1310  v->ttmbf = get_bits1(gb);
1311  if (v->ttmbf) {
1312  v->ttfrm = ff_vc1_ttfrm_to_tt[get_bits(gb, 2)];
1313  } else
1314  v->ttfrm = 0;
1315  } else {
1316  v->ttmbf = 1;
1317  v->ttfrm = TT_8X8;
1318  }
1319  break;
1320  }
1321 
1322 
1323  /* AC Syntax */
1324  v->c_ac_table_index = decode012(gb);
1326  v->y_ac_table_index = decode012(gb);
1327  }
1328  else if (v->fcm != PROGRESSIVE && !v->s.quarter_sample) {
1329  v->range_x <<= 1;
1330  v->range_y <<= 1;
1331  }
1332 
1333  /* DC Syntax */
1334  v->s.dc_table_index = get_bits1(gb);
1336  && v->dquant) {
1337  av_log(v->s.avctx, AV_LOG_DEBUG, "VOP DQuant info\n");
1339  }
1340 
1341  v->bi_type = (v->s.pict_type == AV_PICTURE_TYPE_BI);
1342  if (v->bi_type)
1344 
1345  return 0;
1346 }
1347 
1348 static const uint32_t vc1_ac_tables[AC_MODES][186][2] = {
1349 {
1350 { 0x0001, 2}, { 0x0005, 3}, { 0x000D, 4}, { 0x0012, 5}, { 0x000E, 6}, { 0x0015, 7},
1351 { 0x0013, 8}, { 0x003F, 8}, { 0x004B, 9}, { 0x011F, 9}, { 0x00B8, 10}, { 0x03E3, 10},
1352 { 0x0172, 11}, { 0x024D, 12}, { 0x03DA, 12}, { 0x02DD, 13}, { 0x1F55, 13}, { 0x05B9, 14},
1353 { 0x3EAE, 14}, { 0x0000, 4}, { 0x0010, 5}, { 0x0008, 7}, { 0x0020, 8}, { 0x0029, 9},
1354 { 0x01F4, 9}, { 0x0233, 10}, { 0x01E0, 11}, { 0x012A, 12}, { 0x03DD, 12}, { 0x050A, 13},
1355 { 0x1F29, 13}, { 0x0A42, 14}, { 0x1272, 15}, { 0x1737, 15}, { 0x0003, 5}, { 0x0011, 7},
1356 { 0x00C4, 8}, { 0x004B, 10}, { 0x00B4, 11}, { 0x07D4, 11}, { 0x0345, 12}, { 0x02D7, 13},
1357 { 0x07BF, 13}, { 0x0938, 14}, { 0x0BBB, 14}, { 0x095E, 15}, { 0x0013, 5}, { 0x0078, 7},
1358 { 0x0069, 9}, { 0x0232, 10}, { 0x0461, 11}, { 0x03EC, 12}, { 0x0520, 13}, { 0x1F2A, 13},
1359 { 0x3E50, 14}, { 0x3E51, 14}, { 0x1486, 15}, { 0x000C, 6}, { 0x0024, 9}, { 0x0094, 11},
1360 { 0x08C0, 12}, { 0x0F09, 14}, { 0x1EF0, 15}, { 0x003D, 6}, { 0x0053, 9}, { 0x01A0, 11},
1361 { 0x02D6, 13}, { 0x0F08, 14}, { 0x0013, 7}, { 0x007C, 9}, { 0x07C1, 11}, { 0x04AC, 14},
1362 { 0x001B, 7}, { 0x00A0, 10}, { 0x0344, 12}, { 0x0F79, 14}, { 0x0079, 7}, { 0x03E1, 10},
1363 { 0x02D4, 13}, { 0x2306, 14}, { 0x0021, 8}, { 0x023C, 10}, { 0x0FAE, 12}, { 0x23DE, 14},
1364 { 0x0035, 8}, { 0x0175, 11}, { 0x07B3, 13}, { 0x00C5, 8}, { 0x0174, 11}, { 0x0785, 13},
1365 { 0x0048, 9}, { 0x01A3, 11}, { 0x049E, 13}, { 0x002C, 9}, { 0x00FA, 10}, { 0x07D6, 11},
1366 { 0x0092, 10}, { 0x05CC, 13}, { 0x1EF1, 15}, { 0x00A3, 10}, { 0x03ED, 12}, { 0x093E, 14},
1367 { 0x01E2, 11}, { 0x1273, 15}, { 0x07C4, 11}, { 0x1487, 15}, { 0x0291, 12}, { 0x0293, 12},
1368 { 0x0F8A, 12}, { 0x0509, 13}, { 0x0508, 13}, { 0x078D, 13}, { 0x07BE, 13}, { 0x078C, 13},
1369 { 0x04AE, 14}, { 0x0BBA, 14}, { 0x2307, 14}, { 0x0B9A, 14}, { 0x1736, 15}, { 0x000E, 4},
1370 { 0x0045, 7}, { 0x01F3, 9}, { 0x047A, 11}, { 0x05DC, 13}, { 0x23DF, 14}, { 0x0019, 5},
1371 { 0x0028, 9}, { 0x0176, 11}, { 0x049D, 13}, { 0x23DD, 14}, { 0x0030, 6}, { 0x00A2, 10},
1372 { 0x02EF, 12}, { 0x05B8, 14}, { 0x003F, 6}, { 0x00A5, 10}, { 0x03DB, 12}, { 0x093F, 14},
1373 { 0x0044, 7}, { 0x07CB, 11}, { 0x095F, 15}, { 0x0063, 7}, { 0x03C3, 12}, { 0x0015, 8},
1374 { 0x08F6, 12}, { 0x0017, 8}, { 0x0498, 13}, { 0x002C, 8}, { 0x07B2, 13}, { 0x002F, 8},
1375 { 0x1F54, 13}, { 0x008D, 8}, { 0x07BD, 13}, { 0x008E, 8}, { 0x1182, 13}, { 0x00FB, 8},
1376 { 0x050B, 13}, { 0x002D, 8}, { 0x07C0, 11}, { 0x0079, 9}, { 0x1F5F, 13}, { 0x007A, 9},
1377 { 0x1F56, 13}, { 0x0231, 10}, { 0x03E4, 10}, { 0x01A1, 11}, { 0x0143, 11}, { 0x01F7, 11},
1378 { 0x016F, 12}, { 0x0292, 12}, { 0x02E7, 12}, { 0x016C, 12}, { 0x016D, 12}, { 0x03DC, 12},
1379 { 0x0F8B, 12}, { 0x0499, 13}, { 0x03D8, 12}, { 0x078E, 13}, { 0x02D5, 13}, { 0x1F5E, 13},
1380 { 0x1F2B, 13}, { 0x078F, 13}, { 0x04AD, 14}, { 0x3EAF, 14}, { 0x23DC, 14}, { 0x004A, 9}
1381 },
1382 {
1383 { 0x0000, 3}, { 0x0003, 4}, { 0x000B, 5}, { 0x0014, 6}, { 0x003F, 6}, { 0x005D, 7},
1384 { 0x00A2, 8}, { 0x00AC, 9}, { 0x016E, 9}, { 0x020A, 10}, { 0x02E2, 10}, { 0x0432, 11},
1385 { 0x05C9, 11}, { 0x0827, 12}, { 0x0B54, 12}, { 0x04E6, 13}, { 0x105F, 13}, { 0x172A, 13},
1386 { 0x20B2, 14}, { 0x2D4E, 14}, { 0x39F0, 14}, { 0x4175, 15}, { 0x5A9E, 15}, { 0x0004, 4},
1387 { 0x001E, 5}, { 0x0042, 7}, { 0x00B6, 8}, { 0x0173, 9}, { 0x0395, 10}, { 0x072E, 11},
1388 { 0x0B94, 12}, { 0x16A4, 13}, { 0x20B3, 14}, { 0x2E45, 14}, { 0x0005, 5}, { 0x0040, 7},
1389 { 0x0049, 9}, { 0x028F, 10}, { 0x05CB, 11}, { 0x048A, 13}, { 0x09DD, 14}, { 0x73E2, 15},
1390 { 0x0018, 5}, { 0x0025, 8}, { 0x008A, 10}, { 0x051B, 11}, { 0x0E5F, 12}, { 0x09C9, 14},
1391 { 0x139C, 15}, { 0x0029, 6}, { 0x004F, 9}, { 0x0412, 11}, { 0x048D, 13}, { 0x2E41, 14},
1392 { 0x0038, 6}, { 0x010E, 9}, { 0x05A8, 11}, { 0x105C, 13}, { 0x39F2, 14}, { 0x0058, 7},
1393 { 0x021F, 10}, { 0x0E7E, 12}, { 0x39FF, 14}, { 0x0023, 8}, { 0x02E3, 10}, { 0x04E5, 13},
1394 { 0x2E40, 14}, { 0x00A1, 8}, { 0x05BE, 11}, { 0x09C8, 14}, { 0x0083, 8}, { 0x013A, 11},
1395 { 0x1721, 13}, { 0x0044, 9}, { 0x0276, 12}, { 0x39F6, 14}, { 0x008B, 10}, { 0x04EF, 13},
1396 { 0x5A9B, 15}, { 0x0208, 10}, { 0x1CFE, 13}, { 0x0399, 10}, { 0x1CB4, 13}, { 0x039E, 10},
1397 { 0x39F3, 14}, { 0x05AB, 11}, { 0x73E3, 15}, { 0x0737, 11}, { 0x5A9F, 15}, { 0x082D, 12},
1398 { 0x0E69, 12}, { 0x0E68, 12}, { 0x0433, 11}, { 0x0B7B, 12}, { 0x2DF8, 14}, { 0x2E56, 14},
1399 { 0x2E57, 14}, { 0x39F7, 14}, { 0x51A5, 15}, { 0x0003, 3}, { 0x002A, 6}, { 0x00E4, 8},
1400 { 0x028E, 10}, { 0x0735, 11}, { 0x1058, 13}, { 0x1CFA, 13}, { 0x2DF9, 14}, { 0x4174, 15},
1401 { 0x0009, 4}, { 0x0054, 8}, { 0x0398, 10}, { 0x048B, 13}, { 0x139D, 15}, { 0x000D, 4},
1402 { 0x00AD, 9}, { 0x0826, 12}, { 0x2D4C, 14}, { 0x0011, 5}, { 0x016B, 9}, { 0x0B7F, 12},
1403 { 0x51A4, 15}, { 0x0019, 5}, { 0x021B, 10}, { 0x16FD, 13}, { 0x001D, 5}, { 0x0394, 10},
1404 { 0x28D3, 14}, { 0x002B, 6}, { 0x05BC, 11}, { 0x5A9A, 15}, { 0x002F, 6}, { 0x0247, 12},
1405 { 0x0010, 7}, { 0x0A35, 12}, { 0x003E, 6}, { 0x0B7A, 12}, { 0x0059, 7}, { 0x105E, 13},
1406 { 0x0026, 8}, { 0x09CF, 14}, { 0x0055, 8}, { 0x1CB5, 13}, { 0x0057, 8}, { 0x0E5B, 12},
1407 { 0x00A0, 8}, { 0x1468, 13}, { 0x0170, 9}, { 0x0090, 10}, { 0x01CE, 9}, { 0x021A, 10},
1408 { 0x0218, 10}, { 0x0168, 9}, { 0x021E, 10}, { 0x0244, 12}, { 0x0736, 11}, { 0x0138, 11},
1409 { 0x0519, 11}, { 0x0E5E, 12}, { 0x072C, 11}, { 0x0B55, 12}, { 0x09DC, 14}, { 0x20BB, 14},
1410 { 0x048C, 13}, { 0x1723, 13}, { 0x2E44, 14}, { 0x16A5, 13}, { 0x0518, 11}, { 0x39FE, 14},
1411 { 0x0169, 9}
1412 },
1413 {
1414 { 0x0001, 2}, { 0x0006, 3}, { 0x000F, 4}, { 0x0016, 5}, { 0x0020, 6}, { 0x0018, 7},
1415 { 0x0008, 8}, { 0x009A, 8}, { 0x0056, 9}, { 0x013E, 9}, { 0x00F0, 10}, { 0x03A5, 10},
1416 { 0x0077, 11}, { 0x01EF, 11}, { 0x009A, 12}, { 0x005D, 13}, { 0x0001, 4}, { 0x0011, 5},
1417 { 0x0002, 7}, { 0x000B, 8}, { 0x0012, 9}, { 0x01D6, 9}, { 0x027E, 10}, { 0x0191, 11},
1418 { 0x00EA, 12}, { 0x03DC, 12}, { 0x013B, 13}, { 0x0004, 5}, { 0x0014, 7}, { 0x009E, 8},
1419 { 0x0009, 10}, { 0x01AC, 11}, { 0x01E2, 11}, { 0x03CA, 12}, { 0x005F, 13}, { 0x0017, 5},
1420 { 0x004E, 7}, { 0x005E, 9}, { 0x00F3, 10}, { 0x01AD, 11}, { 0x00EC, 12}, { 0x05F0, 13},
1421 { 0x000E, 6}, { 0x00E1, 8}, { 0x03A4, 10}, { 0x009C, 12}, { 0x013D, 13}, { 0x003B, 6},
1422 { 0x001C, 9}, { 0x0014, 11}, { 0x09BE, 12}, { 0x0006, 7}, { 0x007A, 9}, { 0x0190, 11},
1423 { 0x0137, 13}, { 0x001B, 7}, { 0x0008, 10}, { 0x075C, 11}, { 0x0071, 7}, { 0x00D7, 10},
1424 { 0x09BF, 12}, { 0x0007, 8}, { 0x00AF, 10}, { 0x04CC, 11}, { 0x0034, 8}, { 0x0265, 10},
1425 { 0x009F, 12}, { 0x00E0, 8}, { 0x0016, 11}, { 0x0327, 12}, { 0x0015, 9}, { 0x017D, 11},
1426 { 0x0EBB, 12}, { 0x0014, 9}, { 0x00F6, 10}, { 0x01E4, 11}, { 0x00CB, 10}, { 0x099D, 12},
1427 { 0x00CA, 10}, { 0x02FC, 12}, { 0x017F, 11}, { 0x04CD, 11}, { 0x02FD, 12}, { 0x04FE, 11},
1428 { 0x013A, 13}, { 0x000A, 4}, { 0x0042, 7}, { 0x01D3, 9}, { 0x04DD, 11}, { 0x0012, 5},
1429 { 0x00E8, 8}, { 0x004C, 11}, { 0x0136, 13}, { 0x0039, 6}, { 0x0264, 10}, { 0x0EBA, 12},
1430 { 0x0000, 7}, { 0x00AE, 10}, { 0x099C, 12}, { 0x001F, 7}, { 0x04DE, 11}, { 0x0043, 7},
1431 { 0x04DC, 11}, { 0x0003, 8}, { 0x03CB, 12}, { 0x0006, 8}, { 0x099E, 12}, { 0x002A, 8},
1432 { 0x05F1, 13}, { 0x000F, 8}, { 0x09FE, 12}, { 0x0033, 8}, { 0x09FF, 12}, { 0x0098, 8},
1433 { 0x099F, 12}, { 0x00EA, 8}, { 0x013C, 13}, { 0x002E, 8}, { 0x0192, 11}, { 0x0136, 9},
1434 { 0x006A, 9}, { 0x0015, 11}, { 0x03AF, 10}, { 0x01E3, 11}, { 0x0074, 11}, { 0x00EB, 12},
1435 { 0x02F9, 12}, { 0x005C, 13}, { 0x00ED, 12}, { 0x03DD, 12}, { 0x0326, 12}, { 0x005E, 13},
1436 { 0x0016, 7}
1437 },
1438 {
1439 { 0x0004, 3}, { 0x0014, 5}, { 0x0017, 7}, { 0x007F, 8}, { 0x0154, 9}, { 0x01F2, 10},
1440 { 0x00BF, 11}, { 0x0065, 12}, { 0x0AAA, 12}, { 0x0630, 13}, { 0x1597, 13}, { 0x03B7, 14},
1441 { 0x2B22, 14}, { 0x0BE6, 15}, { 0x000B, 4}, { 0x0037, 7}, { 0x0062, 9}, { 0x0007, 11},
1442 { 0x0166, 12}, { 0x00CE, 13}, { 0x1590, 13}, { 0x05F6, 14}, { 0x0BE7, 15}, { 0x0007, 5},
1443 { 0x006D, 8}, { 0x0003, 11}, { 0x031F, 12}, { 0x05F2, 14}, { 0x0002, 6}, { 0x0061, 9},
1444 { 0x0055, 12}, { 0x01DF, 14}, { 0x001A, 6}, { 0x001E, 10}, { 0x0AC9, 12}, { 0x2B23, 14},
1445 { 0x001E, 6}, { 0x001F, 10}, { 0x0AC3, 12}, { 0x2B2B, 14}, { 0x0006, 7}, { 0x0004, 11},
1446 { 0x02F8, 13}, { 0x0019, 7}, { 0x0006, 11}, { 0x063D, 13}, { 0x0057, 7}, { 0x0182, 11},
1447 { 0x2AA2, 14}, { 0x0004, 8}, { 0x0180, 11}, { 0x059C, 14}, { 0x007D, 8}, { 0x0164, 12},
1448 { 0x076D, 15}, { 0x0002, 9}, { 0x018D, 11}, { 0x1581, 13}, { 0x00AD, 8}, { 0x0060, 12},
1449 { 0x0C67, 14}, { 0x001C, 9}, { 0x00EE, 13}, { 0x0003, 9}, { 0x02CF, 13}, { 0x00D9, 9},
1450 { 0x1580, 13}, { 0x0002, 11}, { 0x0183, 11}, { 0x0057, 12}, { 0x0061, 12}, { 0x0031, 11},
1451 { 0x0066, 12}, { 0x0631, 13}, { 0x0632, 13}, { 0x00AC, 13}, { 0x031D, 12}, { 0x0076, 12},
1452 { 0x003A, 11}, { 0x0165, 12}, { 0x0C66, 14}, { 0x0003, 2}, { 0x0054, 7}, { 0x02AB, 10},
1453 { 0x0016, 13}, { 0x05F7, 14}, { 0x0005, 4}, { 0x00F8, 9}, { 0x0AA9, 12}, { 0x005F, 15},
1454 { 0x0004, 4}, { 0x001C, 10}, { 0x1550, 13}, { 0x0004, 5}, { 0x0077, 11}, { 0x076C, 15},
1455 { 0x000E, 5}, { 0x000A, 12}, { 0x000C, 5}, { 0x0562, 11}, { 0x0004, 6}, { 0x031C, 12},
1456 { 0x0006, 6}, { 0x00C8, 13}, { 0x000D, 6}, { 0x01DA, 13}, { 0x0007, 6}, { 0x00C9, 13},
1457 { 0x0001, 7}, { 0x002E, 14}, { 0x0014, 7}, { 0x1596, 13}, { 0x000A, 7}, { 0x0AC2, 12},
1458 { 0x0016, 7}, { 0x015B, 14}, { 0x0015, 7}, { 0x015A, 14}, { 0x000F, 8}, { 0x005E, 15},
1459 { 0x007E, 8}, { 0x00AB, 8}, { 0x002D, 9}, { 0x00D8, 9}, { 0x000B, 9}, { 0x0014, 10},
1460 { 0x02B3, 10}, { 0x01F3, 10}, { 0x003A, 10}, { 0x0000, 10}, { 0x0058, 10}, { 0x002E, 9},
1461 { 0x005E, 10}, { 0x0563, 11}, { 0x00EC, 12}, { 0x0054, 12}, { 0x0AC1, 12}, { 0x1556, 13},
1462 { 0x02FA, 13}, { 0x0181, 11}, { 0x1557, 13}, { 0x059D, 14}, { 0x2AA3, 14}, { 0x2B2A, 14},
1463 { 0x01DE, 14}, { 0x063C, 13}, { 0x00CF, 13}, { 0x1594, 13}, { 0x000D, 9}
1464 },
1465 {
1466 { 0x0002, 2}, { 0x0006, 3}, { 0x000F, 4}, { 0x000D, 5}, { 0x000C, 5}, { 0x0015, 6},
1467 { 0x0013, 6}, { 0x0012, 6}, { 0x0017, 7}, { 0x001F, 8}, { 0x001E, 8}, { 0x001D, 8},
1468 { 0x0025, 9}, { 0x0024, 9}, { 0x0023, 9}, { 0x0021, 9}, { 0x0021, 10}, { 0x0020, 10},
1469 { 0x000F, 10}, { 0x000E, 10}, { 0x0007, 11}, { 0x0006, 11}, { 0x0020, 11}, { 0x0021, 11},
1470 { 0x0050, 12}, { 0x0051, 12}, { 0x0052, 12}, { 0x000E, 4}, { 0x0014, 6}, { 0x0016, 7},
1471 { 0x001C, 8}, { 0x0020, 9}, { 0x001F, 9}, { 0x000D, 10}, { 0x0022, 11}, { 0x0053, 12},
1472 { 0x0055, 12}, { 0x000B, 5}, { 0x0015, 7}, { 0x001E, 9}, { 0x000C, 10}, { 0x0056, 12},
1473 { 0x0011, 6}, { 0x001B, 8}, { 0x001D, 9}, { 0x000B, 10}, { 0x0010, 6}, { 0x0022, 9},
1474 { 0x000A, 10}, { 0x000D, 6}, { 0x001C, 9}, { 0x0008, 10}, { 0x0012, 7}, { 0x001B, 9},
1475 { 0x0054, 12}, { 0x0014, 7}, { 0x001A, 9}, { 0x0057, 12}, { 0x0019, 8}, { 0x0009, 10},
1476 { 0x0018, 8}, { 0x0023, 11}, { 0x0017, 8}, { 0x0019, 9}, { 0x0018, 9}, { 0x0007, 10},
1477 { 0x0058, 12}, { 0x0007, 4}, { 0x000C, 6}, { 0x0016, 8}, { 0x0017, 9}, { 0x0006, 10},
1478 { 0x0005, 11}, { 0x0004, 11}, { 0x0059, 12}, { 0x000F, 6}, { 0x0016, 9}, { 0x0005, 10},
1479 { 0x000E, 6}, { 0x0004, 10}, { 0x0011, 7}, { 0x0024, 11}, { 0x0010, 7}, { 0x0025, 11},
1480 { 0x0013, 7}, { 0x005A, 12}, { 0x0015, 8}, { 0x005B, 12}, { 0x0014, 8}, { 0x0013, 8},
1481 { 0x001A, 8}, { 0x0015, 9}, { 0x0014, 9}, { 0x0013, 9}, { 0x0012, 9}, { 0x0011, 9},
1482 { 0x0026, 11}, { 0x0027, 11}, { 0x005C, 12}, { 0x005D, 12}, { 0x005E, 12}, { 0x005F, 12},
1483 { 0x0003, 7}
1484 },
1485 {
1486 { 0x0002, 2}, { 0x000F, 4}, { 0x0015, 6}, { 0x0017, 7}, { 0x001F, 8}, { 0x0025, 9},
1487 { 0x0024, 9}, { 0x0021, 10}, { 0x0020, 10}, { 0x0007, 11}, { 0x0006, 11}, { 0x0020, 11},
1488 { 0x0006, 3}, { 0x0014, 6}, { 0x001E, 8}, { 0x000F, 10}, { 0x0021, 11}, { 0x0050, 12},
1489 { 0x000E, 4}, { 0x001D, 8}, { 0x000E, 10}, { 0x0051, 12}, { 0x000D, 5}, { 0x0023, 9},
1490 { 0x000D, 10}, { 0x000C, 5}, { 0x0022, 9}, { 0x0052, 12}, { 0x000B, 5}, { 0x000C, 10},
1491 { 0x0053, 12}, { 0x0013, 6}, { 0x000B, 10}, { 0x0054, 12}, { 0x0012, 6}, { 0x000A, 10},
1492 { 0x0011, 6}, { 0x0009, 10}, { 0x0010, 6}, { 0x0008, 10}, { 0x0016, 7}, { 0x0055, 12},
1493 { 0x0015, 7}, { 0x0014, 7}, { 0x001C, 8}, { 0x001B, 8}, { 0x0021, 9}, { 0x0020, 9},
1494 { 0x001F, 9}, { 0x001E, 9}, { 0x001D, 9}, { 0x001C, 9}, { 0x001B, 9}, { 0x001A, 9},
1495 { 0x0022, 11}, { 0x0023, 11}, { 0x0056, 12}, { 0x0057, 12}, { 0x0007, 4}, { 0x0019, 9},
1496 { 0x0005, 11}, { 0x000F, 6}, { 0x0004, 11}, { 0x000E, 6}, { 0x000D, 6}, { 0x000C, 6},
1497 { 0x0013, 7}, { 0x0012, 7}, { 0x0011, 7}, { 0x0010, 7}, { 0x001A, 8}, { 0x0019, 8},
1498 { 0x0018, 8}, { 0x0017, 8}, { 0x0016, 8}, { 0x0015, 8}, { 0x0014, 8}, { 0x0013, 8},
1499 { 0x0018, 9}, { 0x0017, 9}, { 0x0016, 9}, { 0x0015, 9}, { 0x0014, 9}, { 0x0013, 9},
1500 { 0x0012, 9}, { 0x0011, 9}, { 0x0007, 10}, { 0x0006, 10}, { 0x0005, 10}, { 0x0004, 10},
1501 { 0x0024, 11}, { 0x0025, 11}, { 0x0026, 11}, { 0x0027, 11}, { 0x0058, 12}, { 0x0059, 12},
1502 { 0x005A, 12}, { 0x005B, 12}, { 0x005C, 12}, { 0x005D, 12}, { 0x005E, 12}, { 0x005F, 12},
1503 { 0x0003, 7}
1504 },
1505 {
1506 { 0x0000, 2}, { 0x0003, 3}, { 0x000D, 4}, { 0x0005, 4}, { 0x001C, 5}, { 0x0016, 5},
1507 { 0x003F, 6}, { 0x003A, 6}, { 0x002E, 6}, { 0x0022, 6}, { 0x007B, 7}, { 0x0067, 7},
1508 { 0x005F, 7}, { 0x0047, 7}, { 0x0026, 7}, { 0x00EF, 8}, { 0x00CD, 8}, { 0x00C1, 8},
1509 { 0x00A9, 8}, { 0x004F, 8}, { 0x01F2, 9}, { 0x01DD, 9}, { 0x0199, 9}, { 0x0185, 9},
1510 { 0x015D, 9}, { 0x011B, 9}, { 0x03EF, 10}, { 0x03E1, 10}, { 0x03C8, 10}, { 0x0331, 10},
1511 { 0x0303, 10}, { 0x02F1, 10}, { 0x02A0, 10}, { 0x0233, 10}, { 0x0126, 10}, { 0x07C0, 11},
1512 { 0x076F, 11}, { 0x076C, 11}, { 0x0661, 11}, { 0x0604, 11}, { 0x0572, 11}, { 0x0551, 11},
1513 { 0x046A, 11}, { 0x0274, 11}, { 0x0F27, 12}, { 0x0F24, 12}, { 0x0EDB, 12}, { 0x0C8E, 12},
1514 { 0x0C0B, 12}, { 0x0C0A, 12}, { 0x0AE3, 12}, { 0x08D6, 12}, { 0x0490, 12}, { 0x0495, 12},
1515 { 0x1F19, 13}, { 0x1DB5, 13}, { 0x0009, 4}, { 0x0010, 5}, { 0x0029, 6}, { 0x0062, 7},
1516 { 0x00F3, 8}, { 0x00AD, 8}, { 0x01E5, 9}, { 0x0179, 9}, { 0x009C, 9}, { 0x03B1, 10},
1517 { 0x02AE, 10}, { 0x0127, 10}, { 0x076E, 11}, { 0x0570, 11}, { 0x0275, 11}, { 0x0F25, 12},
1518 { 0x0EC0, 12}, { 0x0AA0, 12}, { 0x08D7, 12}, { 0x1E4C, 13}, { 0x0008, 5}, { 0x0063, 7},
1519 { 0x00AF, 8}, { 0x017B, 9}, { 0x03B3, 10}, { 0x07DD, 11}, { 0x0640, 11}, { 0x0F8D, 12},
1520 { 0x0BC1, 12}, { 0x0491, 12}, { 0x0028, 6}, { 0x00C3, 8}, { 0x0151, 9}, { 0x02A1, 10},
1521 { 0x0573, 11}, { 0x0EC3, 12}, { 0x1F35, 13}, { 0x0065, 7}, { 0x01DA, 9}, { 0x02AF, 10},
1522 { 0x0277, 11}, { 0x08C9, 12}, { 0x1781, 13}, { 0x0025, 7}, { 0x0118, 9}, { 0x0646, 11},
1523 { 0x0AA6, 12}, { 0x1780, 13}, { 0x00C9, 8}, { 0x0321, 10}, { 0x0F9B, 12}, { 0x191E, 13},
1524 { 0x0048, 8}, { 0x07CC, 11}, { 0x0AA1, 12}, { 0x0180, 9}, { 0x0465, 11}, { 0x1905, 13},
1525 { 0x03E2, 10}, { 0x0EC1, 12}, { 0x3C9B, 14}, { 0x02F4, 10}, { 0x08C8, 12}, { 0x07C1, 11},
1526 { 0x0928, 13}, { 0x05E1, 11}, { 0x320D, 14}, { 0x0EC2, 12}, { 0x6418, 15}, { 0x1F34, 13},
1527 { 0x0078, 7}, { 0x0155, 9}, { 0x0552, 11}, { 0x191F, 13}, { 0x00FA, 8}, { 0x07DC, 11},
1528 { 0x1907, 13}, { 0x00AC, 8}, { 0x0249, 11}, { 0x13B1, 14}, { 0x01F6, 9}, { 0x0AE2, 12},
1529 { 0x01DC, 9}, { 0x04ED, 12}, { 0x0184, 9}, { 0x1904, 13}, { 0x0156, 9}, { 0x09D9, 13},
1530 { 0x03E7, 10}, { 0x0929, 13}, { 0x03B2, 10}, { 0x3B68, 14}, { 0x02F5, 10}, { 0x13B0, 14},
1531 { 0x0322, 10}, { 0x3B69, 14}, { 0x0234, 10}, { 0x7935, 15}, { 0x07C7, 11}, { 0xC833, 16},
1532 { 0x0660, 11}, { 0x7934, 15}, { 0x024B, 11}, { 0xC832, 16}, { 0x0AA7, 12}, { 0x1F18, 13},
1533 { 0x007A, 7}
1534 },
1535 {
1536 { 0x0002, 2}, { 0x0000, 3}, { 0x001E, 5}, { 0x0004, 5}, { 0x0012, 6}, { 0x0070, 7},
1537 { 0x001A, 7}, { 0x005F, 8}, { 0x0047, 8}, { 0x01D3, 9}, { 0x00B5, 9}, { 0x0057, 9},
1538 { 0x03B5, 10}, { 0x016D, 10}, { 0x0162, 10}, { 0x07CE, 11}, { 0x0719, 11}, { 0x0691, 11},
1539 { 0x02C6, 11}, { 0x0156, 11}, { 0x0F92, 12}, { 0x0D2E, 12}, { 0x0D20, 12}, { 0x059E, 12},
1540 { 0x0468, 12}, { 0x02A6, 12}, { 0x1DA2, 13}, { 0x1C60, 13}, { 0x1A43, 13}, { 0x0B1D, 13},
1541 { 0x08C0, 13}, { 0x055D, 13}, { 0x0003, 3}, { 0x000A, 5}, { 0x0077, 7}, { 0x00E5, 8},
1542 { 0x01D9, 9}, { 0x03E5, 10}, { 0x0166, 10}, { 0x0694, 11}, { 0x0152, 11}, { 0x059F, 12},
1543 { 0x1F3C, 13}, { 0x1A4B, 13}, { 0x055E, 13}, { 0x000C, 4}, { 0x007D, 7}, { 0x0044, 8},
1544 { 0x03E0, 10}, { 0x0769, 11}, { 0x0E31, 12}, { 0x1F26, 13}, { 0x055C, 13}, { 0x001B, 5},
1545 { 0x00E2, 8}, { 0x03A5, 10}, { 0x02C9, 11}, { 0x1F23, 13}, { 0x3B47, 14}, { 0x0007, 5},
1546 { 0x01D8, 9}, { 0x02D8, 11}, { 0x1F27, 13}, { 0x3494, 14}, { 0x0035, 6}, { 0x03E1, 10},
1547 { 0x059C, 12}, { 0x38C3, 14}, { 0x000C, 6}, { 0x0165, 10}, { 0x1D23, 13}, { 0x1638, 14},
1548 { 0x0068, 7}, { 0x0693, 11}, { 0x3A45, 14}, { 0x0020, 7}, { 0x0F90, 12}, { 0x7CF6, 15},
1549 { 0x00E8, 8}, { 0x058F, 12}, { 0x2CEF, 15}, { 0x0045, 8}, { 0x0B3A, 13}, { 0x01F1, 9},
1550 { 0x3B46, 14}, { 0x01A7, 9}, { 0x1676, 14}, { 0x0056, 9}, { 0x692A, 15}, { 0x038D, 10},
1551 { 0xE309, 16}, { 0x00AA, 10}, { 0x1C611, 17}, { 0x02DF, 11}, { 0xB3B9, 17}, { 0x02C8, 11},
1552 { 0x38C20, 18}, { 0x01B0, 11}, { 0x16390, 18}, { 0x0F9F, 12}, { 0x16771, 18}, { 0x0ED0, 12},
1553 { 0x71843, 19}, { 0x0D2A, 12}, { 0xF9E8C, 20}, { 0x0461, 12}, { 0xF9E8E, 20}, { 0x0B67, 13},
1554 { 0x055F, 13}, { 0x003F, 6}, { 0x006D, 9}, { 0x0E90, 12}, { 0x054E, 13}, { 0x0013, 6},
1555 { 0x0119, 10}, { 0x0B66, 13}, { 0x000B, 6}, { 0x0235, 11}, { 0x7CF5, 15}, { 0x0075, 7},
1556 { 0x0D24, 12}, { 0xF9E9, 16}, { 0x002E, 7}, { 0x1F22, 13}, { 0x0021, 7}, { 0x054F, 13},
1557 { 0x0014, 7}, { 0x3A44, 14}, { 0x00E4, 8}, { 0x7CF7, 15}, { 0x005E, 8}, { 0x7185, 15},
1558 { 0x0037, 8}, { 0x2C73, 15}, { 0x01DB, 9}, { 0x59DD, 16}, { 0x01C7, 9}, { 0x692B, 15},
1559 { 0x01A6, 9}, { 0x58E5, 16}, { 0x00B4, 9}, { 0x1F3D0, 17}, { 0x00B0, 9}, { 0xB1C9, 17},
1560 { 0x03E6, 10}, { 0x16770, 18}, { 0x016E, 10}, { 0x3E7A2, 18}, { 0x011B, 10}, { 0xF9E8D, 20},
1561 { 0x00D9, 10}, { 0xF9E8F, 20}, { 0x00A8, 10}, { 0x2C723, 19}, { 0x0749, 11}, { 0xE3084, 20},
1562 { 0x0696, 11}, { 0x58E45, 20}, { 0x02DE, 11}, { 0xB1C88, 21}, { 0x0231, 11}, { 0x1C610A, 21},
1563 { 0x01B1, 11}, { 0x71842D, 23}, { 0x0D2B, 12}, { 0x38C217, 22}, { 0x0D2F, 12}, { 0x163913, 22},
1564 { 0x05B2, 12}, { 0x163912, 22}, { 0x0469, 12}, { 0x71842C, 23}, { 0x1A42, 13}, { 0x08C1, 13},
1565 { 0x0073, 7}
1566 }
1567 };
1568 
1569 static const uint16_t vlc_offs[] = {
1570  0, 520, 552, 616, 1128, 1160, 1224, 1740, 1772, 1836, 1900, 2436,
1571  2986, 3050, 3610, 4154, 4218, 4746, 5326, 5390, 5902, 6554, 7658, 8342,
1572  9304, 9988, 10630, 11234, 12174, 13006, 13560, 14232, 14786, 15432, 16350, 17522,
1573  20372, 21818, 22330, 22394, 23166, 23678, 23742, 24820, 25332, 25396, 26460, 26980,
1574  27048, 27592, 27600, 27608, 27616, 27624, 28224, 28258, 28290, 28802, 28834, 28866,
1575  29378, 29412, 29444, 29960, 29994, 30026, 30538, 30572, 30604, 31120, 31154, 31186,
1576  31714, 31746, 31778, 32306, 32340, 32372
1577 };
1578 
1579 /**
1580  * Init VC-1 specific tables and VC1Context members
1581  * @param v The VC1Context to initialize
1582  * @return Status
1583  */
1585 {
1586  static int done = 0;
1587  int i = 0;
1588  static VLC_TYPE vlc_table[32372][2];
1589 
1590  v->hrd_rate = v->hrd_buffer = NULL;
1591 
1592  /* VLC tables */
1593  if (!done) {
1595  ff_vc1_bfraction_bits, 1, 1,
1598  ff_vc1_norm2_bits, 1, 1,
1601  ff_vc1_norm6_bits, 1, 1,
1602  ff_vc1_norm6_codes, 2, 2, 556);
1604  ff_vc1_imode_bits, 1, 1,
1606  for (i = 0; i < 3; i++) {
1607  ff_vc1_ttmb_vlc[i].table = &vlc_table[vlc_offs[i * 3 + 0]];
1608  ff_vc1_ttmb_vlc[i].table_allocated = vlc_offs[i * 3 + 1] - vlc_offs[i * 3 + 0];
1610  ff_vc1_ttmb_bits[i], 1, 1,
1612  ff_vc1_ttblk_vlc[i].table = &vlc_table[vlc_offs[i * 3 + 1]];
1613  ff_vc1_ttblk_vlc[i].table_allocated = vlc_offs[i * 3 + 2] - vlc_offs[i * 3 + 1];
1615  ff_vc1_ttblk_bits[i], 1, 1,
1617  ff_vc1_subblkpat_vlc[i].table = &vlc_table[vlc_offs[i * 3 + 2]];
1618  ff_vc1_subblkpat_vlc[i].table_allocated = vlc_offs[i * 3 + 3] - vlc_offs[i * 3 + 2];
1620  ff_vc1_subblkpat_bits[i], 1, 1,
1622  }
1623  for (i = 0; i < 4; i++) {
1624  ff_vc1_4mv_block_pattern_vlc[i].table = &vlc_table[vlc_offs[i * 3 + 9]];
1625  ff_vc1_4mv_block_pattern_vlc[i].table_allocated = vlc_offs[i * 3 + 10] - vlc_offs[i * 3 + 9];
1629  ff_vc1_cbpcy_p_vlc[i].table = &vlc_table[vlc_offs[i * 3 + 10]];
1630  ff_vc1_cbpcy_p_vlc[i].table_allocated = vlc_offs[i * 3 + 11] - vlc_offs[i * 3 + 10];
1632  ff_vc1_cbpcy_p_bits[i], 1, 1,
1634  ff_vc1_mv_diff_vlc[i].table = &vlc_table[vlc_offs[i * 3 + 11]];
1635  ff_vc1_mv_diff_vlc[i].table_allocated = vlc_offs[i * 3 + 12] - vlc_offs[i * 3 + 11];
1637  ff_vc1_mv_diff_bits[i], 1, 1,
1639  }
1640  for (i = 0; i < 8; i++) {
1641  ff_vc1_ac_coeff_table[i].table = &vlc_table[vlc_offs[i * 2 + 21]];
1642  ff_vc1_ac_coeff_table[i].table_allocated = vlc_offs[i * 2 + 22] - vlc_offs[i * 2 + 21];
1644  &vc1_ac_tables[i][0][1], 8, 4,
1645  &vc1_ac_tables[i][0][0], 8, 4, INIT_VLC_USE_NEW_STATIC);
1646  /* initialize interlaced MVDATA tables (2-Ref) */
1647  ff_vc1_2ref_mvdata_vlc[i].table = &vlc_table[vlc_offs[i * 2 + 22]];
1648  ff_vc1_2ref_mvdata_vlc[i].table_allocated = vlc_offs[i * 2 + 23] - vlc_offs[i * 2 + 22];
1650  ff_vc1_2ref_mvdata_bits[i], 1, 1,
1652  }
1653  for (i = 0; i < 4; i++) {
1654  /* initialize 4MV MBMODE VLC tables for interlaced frame P picture */
1655  ff_vc1_intfr_4mv_mbmode_vlc[i].table = &vlc_table[vlc_offs[i * 3 + 37]];
1656  ff_vc1_intfr_4mv_mbmode_vlc[i].table_allocated = vlc_offs[i * 3 + 38] - vlc_offs[i * 3 + 37];
1660  /* initialize NON-4MV MBMODE VLC tables for the same */
1661  ff_vc1_intfr_non4mv_mbmode_vlc[i].table = &vlc_table[vlc_offs[i * 3 + 38]];
1662  ff_vc1_intfr_non4mv_mbmode_vlc[i].table_allocated = vlc_offs[i * 3 + 39] - vlc_offs[i * 3 + 38];
1666  /* initialize interlaced MVDATA tables (1-Ref) */
1667  ff_vc1_1ref_mvdata_vlc[i].table = &vlc_table[vlc_offs[i * 3 + 39]];
1668  ff_vc1_1ref_mvdata_vlc[i].table_allocated = vlc_offs[i * 3 + 40] - vlc_offs[i * 3 + 39];
1670  ff_vc1_1ref_mvdata_bits[i], 1, 1,
1672  }
1673  for (i = 0; i < 4; i++) {
1674  /* Initialize 2MV Block pattern VLC tables */
1675  ff_vc1_2mv_block_pattern_vlc[i].table = &vlc_table[vlc_offs[i + 49]];
1676  ff_vc1_2mv_block_pattern_vlc[i].table_allocated = vlc_offs[i + 50] - vlc_offs[i + 49];
1680  }
1681  for (i = 0; i < 8; i++) {
1682  /* Initialize interlaced CBPCY VLC tables (Table 124 - Table 131) */
1683  ff_vc1_icbpcy_vlc[i].table = &vlc_table[vlc_offs[i * 3 + 53]];
1684  ff_vc1_icbpcy_vlc[i].table_allocated = vlc_offs[i * 3 + 54] - vlc_offs[i * 3 + 53];
1686  ff_vc1_icbpcy_p_bits[i], 1, 1,
1688  /* Initialize interlaced field picture MBMODE VLC tables */
1689  ff_vc1_if_mmv_mbmode_vlc[i].table = &vlc_table[vlc_offs[i * 3 + 54]];
1690  ff_vc1_if_mmv_mbmode_vlc[i].table_allocated = vlc_offs[i * 3 + 55] - vlc_offs[i * 3 + 54];
1692  ff_vc1_if_mmv_mbmode_bits[i], 1, 1,
1694  ff_vc1_if_1mv_mbmode_vlc[i].table = &vlc_table[vlc_offs[i * 3 + 55]];
1695  ff_vc1_if_1mv_mbmode_vlc[i].table_allocated = vlc_offs[i * 3 + 56] - vlc_offs[i * 3 + 55];
1697  ff_vc1_if_1mv_mbmode_bits[i], 1, 1,
1699  }
1700  done = 1;
1701  }
1702 
1703  /* Other defaults */
1704  v->pq = -1;
1705  v->mvrange = 0; /* 7.1.1.18, p80 */
1706 
1707  ff_vc1dsp_init(&v->vc1dsp);
1708 
1709  return 0;
1710 }
int color_prim
8 bits, chroma coordinates of the color primaries
Definition: vc1.h:206
static unsigned int show_bits_long(GetBitContext *s, int n)
Show 0-32 bits.
Definition: get_bits.h:602
in the bitstream is reported as 00b
Definition: vc1.h:149
int plane
Definition: avisynth_c.h:384
const uint8_t ff_vc1_imode_codes[7]
Definition: vc1data.c:214
const uint8_t ff_vc1_icbpcy_p_bits[8][63]
Definition: vc1data.c:793
#define VC1_TTBLK_VLC_BITS
Definition: vc1data.c:126
#define NULL
Definition: coverity.c:32
const struct AVCodec * codec
Definition: avcodec.h:1577
AVRational framerate
Definition: avcodec.h:3108
BI type.
Definition: avutil.h:280
const uint8_t ff_vc1_mv_pmode_table[2][5]
MV P mode - the 5th element is only used for mode 1.
Definition: vc1data.c:43
uint8_t bfraction_lut_index
Index for BFRACTION value (see Table 40, reproduced into ff_vc1_bfraction_lut[])
Definition: vc1.h:395
int p_frame_skipped
Definition: vc1.h:386
const uint8_t ff_vc1_mv_diff_bits[4][73]
Definition: vc1data.c:987
#define AVERROR_INVALIDDATA
Invalid data found when processing input.
Definition: error.h:59
The VC1 Context.
Definition: vc1.h:173
VLC ff_vc1_ttblk_vlc[3]
Definition: vc1data.c:127
#define VC1_ICBPCY_VLC_BITS
Definition: vc1data.c:120
const uint8_t ff_vc1_pquant_table[3][32]
Definition: vc1data.c:89
uint8_t lumscale2
for interlaced field P picture
Definition: vc1.h:339
int k_x
Number of bits for MVs (depends on MV range)
Definition: vc1.h:235
int twomvbptab
Definition: vc1.h:374
ptrdiff_t const GLvoid * data
Definition: opengl_enc.c:100
int reffield
if numref = 0 (1 reference) then reffield decides which
Definition: vc1.h:359
const uint8_t ff_vc1_norm2_codes[4]
Definition: vc1data.c:222
const uint8_t ff_vc1_2ref_mvdata_bits[8][126]
Definition: vc1data.c:565
const uint8_t ff_wmv2_scantableB[64]
Definition: wmv2data.c:30
const uint8_t ff_vc1_if_1mv_mbmode_codes[8][6]
Definition: vc1data.c:319
Definition: vc1.h:159
int mv_type_is_raw
mv type mb plane is not coded
Definition: vc1.h:289
Explicitly specified at frame level.
Definition: vc1.h:39
uint8_t dmvrange
Frame decoding info for interlaced picture.
Definition: vc1.h:336
static unsigned int get_bits(GetBitContext *s, int n)
Read 1-25 bits.
Definition: get_bits.h:379
#define AV_LOG_WARNING
Something somehow does not look correct.
Definition: log.h:182
#define AC_VLC_BITS
Definition: intrax8.c:38
void(* vc1_inv_trans_8x4)(uint8_t *dest, ptrdiff_t stride, int16_t *block)
Definition: vc1dsp.h:38
int ff_set_dimensions(AVCodecContext *s, int width, int height)
Check that the provided frame dimensions are valid and set them on the codec context.
Definition: utils.c:104
#define INIT_VLC_STATIC(vlc, bits, a, b, c, d, e, f, g, static_size)
Definition: vlc.h:75
int max_b_frames
maximum number of B-frames between non-B-frames Note: The output will be delayed by max_b_frames+1 re...
Definition: avcodec.h:1828
int tt_index
Index for Transform Type tables (to decode TTMB)
Definition: vc1.h:285
#define avpriv_request_sample(...)
#define VC1_2REF_MVDATA_VLC_BITS
Definition: vc1data.c:140
int extended_mv
Ext MV in P/B (not in Simple)
Definition: vc1.h:223
int broadcast
TFF/RFF present.
Definition: vc1.h:200
int num
Numerator.
Definition: rational.h:59
int next_use_ic
Definition: vc1.h:297
int transfer_char
8 bits, Opto-electronic transfer characteristics
Definition: vc1.h:207
const uint8_t ff_vc1_4mv_block_pattern_bits[4][16]
Definition: vc1data.c:250
uint8_t rangeredfrm
Frame decoding info for S/M profiles only.
Definition: vc1.h:303
void ff_simple_idct_int16_8bit(int16_t *block)
AVRational sample_aspect_ratio
sample aspect ratio (0 if unknown) That is the width of a pixel divided by the height of the pixel...
Definition: avcodec.h:1947
const uint8_t ff_vc1_cbpcy_p_bits[4][64]
Definition: vc1data.c:682
const int ff_vc1_fps_nr[7]
Definition: vc1data.c:87
int frfd
Definition: vc1.h:368
mpegvideo header.
int intcompfield
which of the two fields to be intensity compensated
Definition: vc1.h:361
VLC * imv_vlc
Definition: vc1.h:342
uint8_t dqprofile
Definition: vc1.h:246
discard all
Definition: avcodec.h:814
int last_use_ic
Definition: vc1.h:297
int fastuvmc
Rounding of qpel vector to hpel ? (not in Simple)
Definition: vc1.h:222
VLC ff_vc1_2ref_mvdata_vlc[8]
Definition: vc1data.c:141
static int bitplane_decoding(uint8_t *data, int *raw_flag, VC1Context *v)
Decode a bitplane&#39;s bits.
Definition: vc1.c:97
int frmrtq_postproc
3 bits,
Definition: vc1.h:219
const uint8_t ff_vc1_adv_progressive_4x8_zz[32]
Definition: vc1data.c:1036
static int vop_dquant_decoding(VC1Context *v)
VOP Dquant decoding.
Definition: vc1.c:230
Macro definitions for various function/variable attributes.
uint8_t rff
Definition: vc1.h:312
int hrd_param_flag
Presence of Hypothetical Reference Decoder parameters.
Definition: vc1.h:209
uint8_t lumshift2
Definition: vc1.h:340
const uint8_t ff_vc1_1ref_mvdata_bits[4][72]
Definition: vc1data.c:390
int range_x
Definition: vc1.h:237
#define VC1_4MV_BLOCK_PATTERN_VLC_BITS
Definition: vc1data.c:122
uint8_t dqsbedge
Definition: vc1.h:247
const uint8_t ff_vc1_ttmb_bits[3][16]
Definition: vc1data.c:882
#define av_assert0(cond)
assert() equivalent, that is always enabled.
Definition: avassert.h:37
int refdist
distance of the current picture from reference
Definition: vc1.h:356
uint8_t * acpred_plane
AC prediction flags bitplane.
Definition: vc1.h:322
int res_transtab
reserved, always 0
Definition: vc1.h:188
VC-1 tables.
int bi_type
Definition: vc1.h:387
int matrix_coef
8 bits, Color primaries->YCbCr transform matrix
Definition: vc1.h:208
const uint8_t ff_vc1_2mv_block_pattern_codes[4][4]
Definition: vc1data.c:258
uint8_t
#define av_cold
Definition: attributes.h:82
int first_pic_header_flag
Definition: vc1.h:369
uint16_t * hrd_rate
Definition: vc1.h:327
const uint8_t ff_vc1_2mv_block_pattern_bits[4][4]
Definition: vc1data.c:262
void(* vc1_inv_trans_4x8_dc)(uint8_t *dest, ptrdiff_t stride, int16_t *block)
Definition: vc1dsp.h:43
int panscanflag
NUMPANSCANWIN, TOPLEFT{X,Y}, BOTRIGHT{X,Y} present.
Definition: vc1.h:203
av_cold int ff_vc1_init_common(VC1Context *v)
Init VC-1 specific tables and VC1Context members.
Definition: vc1.c:1584
const AVRational ff_vc1_pixel_aspect[16]
Definition: vc1data.c:194
it s the only field you need to keep assuming you have a context There is some magic you don t need to care about around this just let it vf offset
VLC ff_vc1_cbpcy_p_vlc[4]
Definition: vc1data.c:119
int interlace
Progressive/interlaced (RPTFTM syntax element)
Definition: vc1.h:201
const uint16_t ff_vc1_icbpcy_p_codes[8][63]
Definition: vc1data.c:710
int y_ac_table_index
Luma index from AC2FRM element.
Definition: vc1.h:255
int second_field
Definition: vc1.h:355
int c_ac_table_index
AC coding set indexes.
Definition: vc1.h:254
const int ff_vc1_ac_sizes[AC_MODES]
Definition: vc1data.c:1133
void(* vc1_inv_trans_8x8)(int16_t *b)
Definition: vc1dsp.h:37
int ttfrm
Transform type info present at frame level.
Definition: vc1.h:257
uint8_t aux_luty[2][256]
Definition: vc1.h:294
int16_t bfraction
Relative position % anchors=> how to scale MVs.
Definition: vc1.h:272
const uint8_t ff_vc1_if_mmv_mbmode_bits[8][8]
Definition: vc1data.c:308
int profile
Sequence header data for all Profiles TODO: choose between ints, uint8_ts and monobit flags...
Definition: vc1.h:218
#define height
int refdist_flag
REFDIST syntax element present in II, IP, PI or PP field picture headers.
Definition: vc1.h:204
int ff_set_sar(AVCodecContext *avctx, AVRational sar)
Check that the provided sample aspect ratio is valid and set it on the codec context.
Definition: utils.c:119
#define ff_dlog(a,...)
uint8_t * forward_mb_plane
bitplane for "forward" MBs
Definition: vc1.h:288
uint8_t last_luty[2][256]
Definition: vc1.h:293
VLC ff_vc1_norm2_vlc
Definition: vc1data.c:110
int mb_height
number of MBs horizontally & vertically
Definition: mpegvideo.h:129
const uint8_t ff_vc1_imode_bits[7]
Definition: vc1data.c:217
int ff_vc1_decode_sequence_header(AVCodecContext *avctx, VC1Context *v, GetBitContext *gb)
Decode Simple/Main Profiles sequence header.
Definition: vc1.c:276
int av_reduce(int *dst_num, int *dst_den, int64_t num, int64_t den, int64_t max)
Reduce a fraction.
Definition: rational.c:35
const uint8_t ff_vc1_subblkpat_bits[3][15]
Definition: vc1data.c:930
VLC ff_vc1_4mv_block_pattern_vlc[4]
Definition: vc1data.c:123
int fieldtx_is_raw
Definition: vc1.h:348
Non-uniform quant used for all frames.
Definition: vc1.h:40
uint8_t * over_flags_plane
Overflags bitplane.
Definition: vc1.h:324
uint8_t dqbilevel
Definition: vc1.h:248
#define FFALIGN(x, a)
Definition: macros.h:48
#define av_log(a,...)
int range_y
MV range.
Definition: vc1.h:237
uint8_t last_lutuv[2][256]
lookup tables used for intensity compensation
Definition: vc1.h:293
int psf
Progressive Segmented Frame.
Definition: vc1.h:211
uint8_t ttmbf
Transform type flag.
Definition: vc1.h:258
static void rotate_luts(VC1Context *v)
Definition: vc1.c:591
int k_y
Number of bits for MVs (depends on MV range)
Definition: vc1.h:236
static const uint16_t vlc_offs[]
Definition: vc1.c:1569
void(* vc1_inv_trans_4x4)(uint8_t *dest, ptrdiff_t stride, int16_t *block)
Definition: vc1dsp.h:40
Implicitly specified at frame level.
Definition: vc1.h:38
#define ROTATE(DEF, L, N, C, A)
static void decode_colskip(uint8_t *plane, int width, int height, int stride, GetBitContext *gb)
Decode columns by checking if they are skipped.
Definition: vc1.c:74
int dmb_is_raw
direct mb plane is raw
Definition: vc1.h:290
#define i(width, name, range_min, range_max)
Definition: cbs_h2645.c:259
#define VC1_CBPCY_P_VLC_BITS
Definition: vc1data.c:118
#define AV_LOG_ERROR
Something went wrong and cannot losslessly be recovered.
Definition: log.h:176
int res_y411
reserved, old interlaced mode
Definition: vc1.h:184
int overlap
overlapped transforms in use
Definition: vc1.h:226
in the bitstream is reported as 11b
Definition: vc1.h:151
int res_x8
reserved
Definition: vc1.h:185
#define init_vlc(vlc, nb_bits, nb_codes,bits, bits_wrap, bits_size,codes, codes_wrap, codes_size,flags)
Definition: vlc.h:38
int qs_last
if qpel has been used in the previous (tr.) picture
Definition: vc1.h:366
#define AV_LOG_DEBUG
Stuff which is only useful for libav* developers.
Definition: log.h:197
#define VC1_BFRACTION_VLC_BITS
Definition: vc1data.c:105
VLC ff_vc1_imode_vlc
Definition: vc1data.c:108
VLC * mbmode_vlc
Definition: vc1.h:341
int quarter_sample
1->qpel, 0->half pel ME/MC
Definition: mpegvideo.h:401
GetBitContext gb
Definition: mpegvideo.h:448
int resync_marker
could this stream contain resync markers
Definition: vc1.h:402
const int ff_vc1_ttfrm_to_tt[4]
Definition: vc1data.c:40
VLC ff_vc1_norm6_vlc
Definition: vc1data.c:112
const uint8_t ff_wmv2_scantableA[64]
Definition: wmv2data.c:23
uint8_t broken_link
Broken link flag (BROKEN_LINK syntax element)
Definition: vc1.h:396
const uint8_t * zz_8x4
Zigzag scan table for TT_8x4 coding mode.
Definition: vc1.h:241
int postprocflag
Per-frame processing suggestion flag present.
Definition: vc1.h:199
int res_rtm_flag
reserved, set to 1
Definition: vc1.h:191
int cbptab
Definition: vc1.h:299
#define VC1_IF_1MV_MBMODE_VLC_BITS
Definition: vc1data.c:136
void ff_simple_idct44_add(uint8_t *dest, ptrdiff_t line_size, int16_t *block)
Definition: simple_idct.c:224
static void decode_rowskip(uint8_t *plane, int width, int height, int stride, GetBitContext *gb)
Decode rows by checking if they are skipped.
Definition: vc1.c:52
int ff_vc1_parse_frame_header_adv(VC1Context *v, GetBitContext *gb)
Definition: vc1.c:845
VLC ff_vc1_ttmb_vlc[3]
Definition: vc1data.c:115
const uint16_t ff_vc1_norm6_codes[64]
Definition: vc1data.c:229
int cur_field_type
0: top, 1: bottom
Definition: vc1.h:363
VLC * twomvbp_vlc
Definition: vc1.h:343
const uint8_t * zz_4x8
Zigzag scan table for TT_4x8 coding mode.
Definition: vc1.h:242
enum AVPictureType pict_type
Picture type of the frame.
Definition: frame.h:378
int x8_type
Definition: vc1.h:388
int * curr_use_ic
Definition: vc1.h:297
const uint16_t ff_vc1_cbpcy_p_codes[4][64]
Definition: vc1data.c:655
VLC ff_vc1_icbpcy_vlc[8]
Definition: vc1data.c:121
const int ff_vc1_fps_dr[2]
Definition: vc1data.c:88
int tfcntrflag
TFCNTR present.
Definition: vc1.h:202
#define width
int field_mode
1 for interlaced field pictures
Definition: vc1.h:353
int width
picture width / height.
Definition: avcodec.h:1741
#define VC1_SUBBLKPAT_VLC_BITS
Definition: vc1data.c:128
uint8_t * mbskip_table
used to avoid copy if macroblock skipped (for black regions for example) and used for B-frame encodin...
Definition: mpegvideo.h:196
uint8_t w
Definition: llviddspenc.c:38
uint8_t mv_mode
Frame decoding info for all profiles.
Definition: vc1.h:233
Picture * current_picture_ptr
pointer to the current picture
Definition: mpegvideo.h:184
int fourmvswitch
Definition: vc1.h:337
int icbptab
Definition: vc1.h:372
int ff_vc1_parse_frame_header(VC1Context *v, GetBitContext *gb)
Definition: vc1.c:626
uint8_t lumscale
Luma compensation parameters.
Definition: vc1.h:269
const uint32_t ff_vc1_1ref_mvdata_codes[4][72]
Definition: vc1data.c:343
static av_always_inline int get_vlc2(GetBitContext *s, VLC_TYPE(*table)[2], int bits, int max_depth)
Parse a vlc code.
Definition: get_bits.h:797
static void invert(float *h, int n)
Definition: asrc_sinc.c:201
uint8_t range_mapuv_flag
Definition: vc1.h:330
uint8_t closed_entry
Closed entry point flag (CLOSED_ENTRY syntax element)
Definition: vc1.h:397
int ticks_per_frame
For some codecs, the time base is closer to the field rate than the frame rate.
Definition: avcodec.h:1700
void(* vc1_inv_trans_8x8_dc)(uint8_t *dest, ptrdiff_t stride, int16_t *block)
Definition: vc1dsp.h:41
int intcomp
Definition: vc1.h:338
uint8_t * fieldtx_plane
Definition: vc1.h:347
VLC * cbpcy_vlc
CBPCY VLC table.
Definition: vc1.h:284
const uint8_t ff_vc1_norm6_bits[64]
Definition: vc1data.c:236
static int decode210(GetBitContext *gb)
Definition: get_bits.h:841
VLC ff_vc1_bfraction_vlc
Definition: vc1data.c:106
int table_allocated
Definition: vlc.h:29
uint8_t aux_lutuv[2][256]
lookup tables used for intensity compensation
Definition: vc1.h:294
int rangered
RANGEREDFRM (range reduction) syntax element present at frame level.
Definition: vc1.h:189
int finterpflag
INTERPFRM present.
Definition: vc1.h:228
#define AV_LOG_INFO
Standard information.
Definition: log.h:187
#define AC_MODES
Definition: vc1data.h:204
static int decode_sequence_header_adv(VC1Context *v, GetBitContext *gb)
Definition: vc1.c:397
int chromaformat
2 bits, 2=4:2:0, only defined
Definition: vc1.h:198
int res_sprite
Simple/Main Profile sequence header.
Definition: vc1.h:183
Libavcodec external API header.
const uint8_t ff_vc1_ttblk_codes[3][8]
Definition: vc1data.c:913
enum AVCodecID codec_id
Definition: avcodec.h:1578
const uint8_t ff_vc1_4mv_block_pattern_codes[4][16]
Definition: vc1data.c:244
const uint8_t ff_vc1_intfr_non4mv_mbmode_codes[4][9]
Definition: vc1data.c:282
int multires
frame-level RESPIC syntax element present
Definition: vc1.h:186
static int read_bfraction(VC1Context *v, GetBitContext *gb)
Definition: vc1.c:614
main external API structure.
Definition: avcodec.h:1568
int height
picture size. must be a multiple of 16
Definition: mpegvideo.h:100
uint8_t range_mapy
Definition: vc1.h:331
void(* vc1_inv_trans_4x8)(uint8_t *dest, ptrdiff_t stride, int16_t *block)
Definition: vc1dsp.h:39
int extended_dmv
Additional extended dmv range at P/B-frame-level.
Definition: vc1.h:205
void ff_simple_idct84_add(uint8_t *dest, ptrdiff_t line_size, int16_t *block)
Definition: simple_idct.c:194
int imvtab
Definition: vc1.h:373
static unsigned int get_bits1(GetBitContext *s)
Definition: get_bits.h:498
static void skip_bits1(GetBitContext *s)
Definition: get_bits.h:538
int fmb_is_raw
forward mb plane is raw
Definition: vc1.h:291
void(* vc1_inv_trans_8x4_dc)(uint8_t *dest, ptrdiff_t stride, int16_t *block)
Definition: vc1dsp.h:42
const uint16_t ff_vc1_ttmb_codes[3][16]
Definition: vc1data.c:852
int fptype
Definition: vc1.h:354
static void skip_bits(GetBitContext *s, int n)
Definition: get_bits.h:467
Rational number (pair of numerator and denominator).
Definition: rational.h:58
struct AVFrame * f
Definition: mpegpicture.h:46
const uint16_t ff_vc1_intfr_4mv_mbmode_codes[4][15]
Definition: vc1data.c:267
#define VC1_2MV_BLOCK_PATTERN_VLC_BITS
Definition: vc1data.c:124
they must not be accessed directly The fifo field contains the frames that are queued in the input for processing by the filter The status_in and status_out fields contains the queued status(EOF or error) of the link
int aux_use_ic
Definition: vc1.h:297
uint8_t respic
Frame-level flag for resized images.
Definition: vc1.h:274
#define INIT_LUT(lumscale, lumshift, luty, lutuv, chain)
Definition: vc1.c:569
int skip_is_raw
skip mb plane is not coded
Definition: vc1.h:292
VLC ff_vc1_if_mmv_mbmode_vlc[8]
Definition: vc1data.c:135
int quantizer_mode
2 bits, quantizer mode used for sequence, see QUANT_*
Definition: vc1.h:227
uint8_t next_lutuv[2][256]
lookup tables used for intensity compensation
Definition: vc1.h:295
int ref_field_type[2]
forward and backward reference field type (top or bottom)
Definition: vc1.h:364
uint8_t * direct_mb_plane
bitplane for "direct" MBs
Definition: vc1.h:287
uint8_t mvrange
Ranges:0 -> [-64n 63.f] x [-32, 31.f]1 -> [-128, 127.f] x [-64, 63.f]2 -> [-512, 511.f] x [-128, 127.f]3 -> [-1024, 1023.f] x [-256, 255.f].
Definition: vc1.h:282
int max_b_frames
max number of B-frames for encoding
Definition: mpegvideo.h:115
int pict_type
AV_PICTURE_TYPE_I, AV_PICTURE_TYPE_P, AV_PICTURE_TYPE_B, ...
Definition: mpegvideo.h:212
int max_coded_width
Definition: vc1.h:221
uint8_t * mv_type_mb_plane
bitplane for mv_type == (4MV)
Definition: vc1.h:286
int vstransform
variable-size [48]x[48] transform type + info
Definition: vc1.h:225
TODO: WMV9 specific.
Definition: vc1_common.h:51
VLC ff_vc1_if_1mv_mbmode_vlc[8]
Definition: vc1data.c:137
int mbmodetab
Definition: vc1.h:371
int numref
number of past field pictures used as reference
Definition: vc1.h:357
void avpriv_report_missing_feature(void *avc, const char *msg,...) av_printf_format(2
Log a generic warning message about a missing feature.
void(* vc1_inv_trans_4x4_dc)(uint8_t *dest, ptrdiff_t stride, int16_t *block)
Definition: vc1dsp.h:44
and forward the test the status of outputs and forward it to the corresponding return FFERROR_NOT_READY If the filters stores internally one or a few frame for some it can consider them to be part of the FIFO and delay acknowledging a status change accordingly Example code
uint8_t range_mapuv
Definition: vc1.h:332
uint8_t tff
Definition: vc1.h:312
VLC ff_vc1_mv_diff_vlc[4]
Definition: vc1data.c:117
const uint8_t ff_vc1_intfr_4mv_mbmode_bits[4][15]
Definition: vc1data.c:274
MpegEncContext s
Definition: vc1.h:174
const uint8_t ff_vc1_intfr_non4mv_mbmode_bits[4][9]
Definition: vc1data.c:289
in the bitstream is reported as 10b
Definition: vc1.h:150
const uint8_t ff_vc1_bfraction_bits[23]
Definition: vc1data.c:174
struct AVCodecContext * avctx
Definition: mpegvideo.h:98
uint8_t pq
Definition: vc1.h:238
int max_coded_height
Definition: vc1.h:221
GLint GLenum GLboolean GLsizei stride
Definition: opengl_enc.c:104
const uint8_t ff_vc1_bfraction_codes[23]
Definition: vc1data.c:183
int pqindex
raw pqindex used in coding set selection
Definition: vc1.h:262
#define VC1_1REF_MVDATA_VLC_BITS
Definition: vc1data.c:138
int hrd_num_leaky_buckets
Definition: vc1.h:319
#define VC1_IF_MMV_MBMODE_VLC_BITS
Definition: vc1data.c:134
common internal api header.
int mb_stride
mb_width+1 used for some arrays to allow simple addressing of left & top MBs without sig11 ...
Definition: mpegvideo.h:130
VLC ff_vc1_2mv_block_pattern_vlc[4]
Definition: vc1data.c:125
#define VC1_TTMB_VLC_BITS
Definition: vc1data.c:114
static int get_unary(GetBitContext *gb, int stop, int len)
Get unary code of limited length.
Definition: unary.h:46
#define VC1_IMODE_VLC_BITS
Definition: vc1data.c:107
enum FrameCodingMode fcm
Frame decoding info for Advanced profile.
Definition: vc1.h:309
#define INIT_VLC_USE_NEW_STATIC
Definition: vlc.h:55
uint8_t dquantfrm
pquant parameters
Definition: vc1.h:245
uint8_t lumshift
Definition: vc1.h:270
uint8_t next_luty[2][256]
Definition: vc1.h:295
Bi-dir predicted.
Definition: avutil.h:276
int res_fasttx
reserved, always 1
Definition: vc1.h:187
enum AVDiscard skip_loop_filter
Skip loop filtering for selected frames.
Definition: avcodec.h:3029
#define VC1_MV_DIFF_VLC_BITS
Definition: vc1data.c:116
int pic_header_flag
Definition: vc1.h:370
int den
Denominator.
Definition: rational.h:60
#define VC1_NORM2_VLC_BITS
Definition: vc1data.c:109
VLC ff_vc1_ac_coeff_table[8]
Definition: vc1data.c:143
const uint8_t ff_vc1_adv_progressive_8x4_zz[32]
Definition: vc1data.c:1029
uint8_t postproc
Definition: vc1.h:318
uint8_t condover
Definition: vc1.h:326
int ff_vc1_decode_entry_point(AVCodecContext *avctx, VC1Context *v, GetBitContext *gb)
Definition: vc1.c:508
#define VC1_INTFR_4MV_MBMODE_VLC_BITS
Definition: vc1data.c:130
static const uint32_t vc1_ac_tables[AC_MODES][186][2]
Definition: vc1.c:1348
uint8_t uvsamp
Definition: vc1.h:317
uint8_t pquantizer
Uniform (over sequence) quantizer in use.
Definition: vc1.h:283
int rnd
rounding control
Definition: vc1.h:298
simple idct header.
const uint8_t ff_vc1_ttblk_bits[3][8]
Definition: vc1data.c:918
int acpred_is_raw
Definition: vc1.h:323
uint8_t rptfrm
Definition: vc1.h:312
uint8_t(* curr_luty)[256]
Definition: vc1.h:296
static int decode012(GetBitContext *gb)
Definition: get_bits.h:831
VLC_TYPE(* table)[2]
code, bits
Definition: vlc.h:28
VLC ff_vc1_1ref_mvdata_vlc[4]
Definition: vc1data.c:139
int bitrtq_postproc
5 bits, quantized framerate-based postprocessing strength
Definition: vc1.h:220
int parse_only
Context is used within parser.
Definition: vc1.h:401
int overflg_is_raw
Definition: vc1.h:325
uint8_t interpfrm
Definition: vc1.h:304
void ff_simple_idct_add_int16_8bit(uint8_t *dest, ptrdiff_t line_size, int16_t *block)
Definition: vc1.h:112
const uint8_t ff_vc1_subblkpat_codes[3][15]
Definition: vc1data.c:925
int level
Advanced Profile.
Definition: vc1.h:197
int fourmvbptab
Definition: vc1.h:375
#define VC1_NORM6_VLC_BITS
Definition: vc1data.c:111
uint8_t range_mapy_flag
Definition: vc1.h:329
int brfd
reference frame distance (forward or backward)
Definition: vc1.h:368
void ff_simple_idct48_add(uint8_t *dest, ptrdiff_t line_size, int16_t *block)
Definition: simple_idct.c:209
int dquant
How qscale varies with MBs, 2 bits (not in Simple)
Definition: vc1.h:224
uint8_t mv_mode2
Secondary MV coding mode (B-frames)
Definition: vc1.h:234
const uint8_t ff_vc1_if_1mv_mbmode_bits[8][6]
Definition: vc1data.c:329
#define VLC_TYPE
Definition: vlc.h:24
const uint8_t ff_vc1_norm2_bits[4]
Definition: vc1data.c:225
#define stride
uint16_t * hrd_buffer
Definition: vc1.h:327
int mv_table_index
Definition: mpegvideo.h:430
const uint8_t ff_vc1_if_mmv_mbmode_codes[8][8]
Definition: vc1data.c:298
const uint8_t ff_vc1_mv_pmode_table2[2][4]
Definition: vc1data.c:47
#define VC1_INTFR_NON4MV_MBMODE_VLC_BITS
Definition: vc1data.c:132
av_cold void ff_vc1dsp_init(VC1DSPContext *dsp)
Definition: vc1dsp.c:971
VLC * fourmvbp_vlc
Definition: vc1.h:344
VLC ff_vc1_intfr_non4mv_mbmode_vlc[4]
Definition: vc1data.c:133
VLC ff_vc1_intfr_4mv_mbmode_vlc[4]
Definition: vc1data.c:131
int dc_table_index
Definition: mpegvideo.h:433
VLC ff_vc1_subblkpat_vlc[3]
Definition: vc1data.c:129
uint8_t halfpq
Uniform quant over image and qp+.5.
Definition: vc1.h:273
VC1DSPContext vc1dsp
Definition: vc1.h:177
Predicted.
Definition: avutil.h:275
uint8_t((* curr_lutuv)[256]
Definition: vc1.h:296
const uint32_t ff_vc1_2ref_mvdata_codes[8][126]
Definition: vc1data.c:418
const uint16_t ff_vc1_mv_diff_codes[4][73]
Definition: vc1data.c:937
const int16_t ff_vc1_bfraction_lut[23]
Definition: vc1data.c:163
uint8_t altpq
Current/alternate frame quantizer scale.
Definition: vc1.h:238
static uint8_t tmp[11]
Definition: aes_ctr.c:26