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1
/*
2
 * VC-1 and WMV3 decoder common code
3
 * Copyright (c) 2006-2007 Konstantin Shishkov
4
 * Partly based on vc9.c (c) 2005 Anonymous, Alex Beregszaszi, Michael Niedermayer
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 *
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 * This file is part of Libav.
7
 *
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 * Libav is free software; you can redistribute it and/or
9
 * modify it under the terms of the GNU Lesser General Public
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 * License as published by the Free Software Foundation; either
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 * version 2.1 of the License, or (at your option) any later version.
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 *
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 * Libav is distributed in the hope that it will be useful,
14
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
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 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
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 * Lesser General Public License for more details.
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 *
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 * You should have received a copy of the GNU Lesser General Public
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 * License along with Libav; if not, write to the Free Software
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 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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 */
22

    
23
/**
24
 * @file
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 * VC-1 and WMV3 decoder common code
26
 *
27
 */
28
#include "internal.h"
29
#include "dsputil.h"
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#include "avcodec.h"
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#include "mpegvideo.h"
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#include "vc1.h"
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#include "vc1data.h"
34
#include "msmpeg4data.h"
35
#include "unary.h"
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#include "simple_idct.h"
37

    
38
#undef NDEBUG
39
#include <assert.h>
40

    
41
/***********************************************************************/
42
/**
43
 * @defgroup vc1bitplane VC-1 Bitplane decoding
44
 * @see 8.7, p56
45
 * @{
46
 */
47

    
48
/**
49
 * Imode types
50
 * @{
51
 */
52
enum Imode {
53
    IMODE_RAW,
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    IMODE_NORM2,
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    IMODE_DIFF2,
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    IMODE_NORM6,
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    IMODE_DIFF6,
58
    IMODE_ROWSKIP,
59
    IMODE_COLSKIP
60
};
61
/** @} */ //imode defines
62

    
63
/** Decode rows by checking if they are skipped
64
 * @param plane Buffer to store decoded bits
65
 * @param[in] width Width of this buffer
66
 * @param[in] height Height of this buffer
67
 * @param[in] stride of this buffer
68
 */
69
static void decode_rowskip(uint8_t* plane, int width, int height, int stride, GetBitContext *gb){
70
    int x, y;
71

    
72
    for (y=0; y<height; y++){
73
        if (!get_bits1(gb)) //rowskip
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            memset(plane, 0, width);
75
        else
76
            for (x=0; x<width; x++)
77
                plane[x] = get_bits1(gb);
78
        plane += stride;
79
    }
80
}
81

    
82
/** Decode columns by checking if they are skipped
83
 * @param plane Buffer to store decoded bits
84
 * @param[in] width Width of this buffer
85
 * @param[in] height Height of this buffer
86
 * @param[in] stride of this buffer
87
 * @todo FIXME: Optimize
88
 */
89
static void decode_colskip(uint8_t* plane, int width, int height, int stride, GetBitContext *gb){
90
    int x, y;
91

    
92
    for (x=0; x<width; x++){
93
        if (!get_bits1(gb)) //colskip
94
            for (y=0; y<height; y++)
95
                plane[y*stride] = 0;
96
        else
97
            for (y=0; y<height; y++)
98
                plane[y*stride] = get_bits1(gb);
99
        plane ++;
100
    }
101
}
102

    
103
/** Decode a bitplane's bits
104
 * @param data bitplane where to store the decode bits
105
 * @param[out] raw_flag pointer to the flag indicating that this bitplane is not coded explicitly
106
 * @param v VC-1 context for bit reading and logging
107
 * @return Status
108
 * @todo FIXME: Optimize
109
 */
110
static int bitplane_decoding(uint8_t* data, int *raw_flag, VC1Context *v)
111
{
112
    GetBitContext *gb = &v->s.gb;
113

    
114
    int imode, x, y, code, offset;
115
    uint8_t invert, *planep = data;
116
    int width, height, stride;
117

    
118
    width = v->s.mb_width;
119
    height = v->s.mb_height;
120
    stride = v->s.mb_stride;
121
    invert = get_bits1(gb);
122
    imode = get_vlc2(gb, ff_vc1_imode_vlc.table, VC1_IMODE_VLC_BITS, 1);
123

    
124
    *raw_flag = 0;
125
    switch (imode)
126
    {
127
    case IMODE_RAW:
128
        //Data is actually read in the MB layer (same for all tests == "raw")
129
        *raw_flag = 1; //invert ignored
130
        return invert;
131
    case IMODE_DIFF2:
132
    case IMODE_NORM2:
133
        if ((height * width) & 1)
134
        {
135
            *planep++ = get_bits1(gb);
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            offset = 1;
137
        }
138
        else offset = 0;
139
        // decode bitplane as one long line
140
        for (y = offset; y < height * width; y += 2) {
141
            code = get_vlc2(gb, ff_vc1_norm2_vlc.table, VC1_NORM2_VLC_BITS, 1);
142
            *planep++ = code & 1;
143
            offset++;
144
            if(offset == width) {
145
                offset = 0;
146
                planep += stride - width;
147
            }
148
            *planep++ = code >> 1;
149
            offset++;
150
            if(offset == width) {
151
                offset = 0;
152
                planep += stride - width;
153
            }
154
        }
155
        break;
156
    case IMODE_DIFF6:
157
    case IMODE_NORM6:
158
        if(!(height % 3) && (width % 3)) { // use 2x3 decoding
159
            for(y = 0; y < height; y+= 3) {
160
                for(x = width & 1; x < width; x += 2) {
161
                    code = get_vlc2(gb, ff_vc1_norm6_vlc.table, VC1_NORM6_VLC_BITS, 2);
162
                    if(code < 0){
163
                        av_log(v->s.avctx, AV_LOG_DEBUG, "invalid NORM-6 VLC\n");
164
                        return -1;
165
                    }
166
                    planep[x + 0] = (code >> 0) & 1;
167
                    planep[x + 1] = (code >> 1) & 1;
168
                    planep[x + 0 + stride] = (code >> 2) & 1;
169
                    planep[x + 1 + stride] = (code >> 3) & 1;
170
                    planep[x + 0 + stride * 2] = (code >> 4) & 1;
171
                    planep[x + 1 + stride * 2] = (code >> 5) & 1;
172
                }
173
                planep += stride * 3;
174
            }
175
            if(width & 1) decode_colskip(data, 1, height, stride, &v->s.gb);
176
        } else { // 3x2
177
            planep += (height & 1) * stride;
178
            for(y = height & 1; y < height; y += 2) {
179
                for(x = width % 3; x < width; x += 3) {
180
                    code = get_vlc2(gb, ff_vc1_norm6_vlc.table, VC1_NORM6_VLC_BITS, 2);
181
                    if(code < 0){
182
                        av_log(v->s.avctx, AV_LOG_DEBUG, "invalid NORM-6 VLC\n");
183
                        return -1;
184
                    }
185
                    planep[x + 0] = (code >> 0) & 1;
186
                    planep[x + 1] = (code >> 1) & 1;
187
                    planep[x + 2] = (code >> 2) & 1;
188
                    planep[x + 0 + stride] = (code >> 3) & 1;
189
                    planep[x + 1 + stride] = (code >> 4) & 1;
190
                    planep[x + 2 + stride] = (code >> 5) & 1;
191
                }
192
                planep += stride * 2;
193
            }
194
            x = width % 3;
195
            if(x) decode_colskip(data  ,             x, height    , stride, &v->s.gb);
196
            if(height & 1) decode_rowskip(data+x, width - x, 1, stride, &v->s.gb);
197
        }
198
        break;
199
    case IMODE_ROWSKIP:
200
        decode_rowskip(data, width, height, stride, &v->s.gb);
201
        break;
202
    case IMODE_COLSKIP:
203
        decode_colskip(data, width, height, stride, &v->s.gb);
204
        break;
205
    default: break;
206
    }
207

    
208
    /* Applying diff operator */
209
    if (imode == IMODE_DIFF2 || imode == IMODE_DIFF6)
210
    {
211
        planep = data;
212
        planep[0] ^= invert;
213
        for (x=1; x<width; x++)
214
            planep[x] ^= planep[x-1];
215
        for (y=1; y<height; y++)
216
        {
217
            planep += stride;
218
            planep[0] ^= planep[-stride];
219
            for (x=1; x<width; x++)
220
            {
221
                if (planep[x-1] != planep[x-stride]) planep[x] ^= invert;
222
                else                                 planep[x] ^= planep[x-1];
223
            }
224
        }
225
    }
226
    else if (invert)
227
    {
228
        planep = data;
229
        for (x=0; x<stride*height; x++) planep[x] = !planep[x]; //FIXME stride
230
    }
231
    return (imode<<1) + invert;
232
}
233

    
234
/** @} */ //Bitplane group
235

    
236
/***********************************************************************/
237
/** VOP Dquant decoding
238
 * @param v VC-1 Context
239
 */
240
static int vop_dquant_decoding(VC1Context *v)
241
{
242
    GetBitContext *gb = &v->s.gb;
243
    int pqdiff;
244

    
245
    //variable size
246
    if (v->dquant == 2)
247
    {
248
        pqdiff = get_bits(gb, 3);
249
        if (pqdiff == 7) v->altpq = get_bits(gb, 5);
250
        else v->altpq = v->pq + pqdiff + 1;
251
    }
252
    else
253
    {
254
        v->dquantfrm = get_bits1(gb);
255
        if ( v->dquantfrm )
256
        {
257
            v->dqprofile = get_bits(gb, 2);
258
            switch (v->dqprofile)
259
            {
260
            case DQPROFILE_SINGLE_EDGE:
261
            case DQPROFILE_DOUBLE_EDGES:
262
                v->dqsbedge = get_bits(gb, 2);
263
                break;
264
            case DQPROFILE_ALL_MBS:
265
                v->dqbilevel = get_bits1(gb);
266
                if(!v->dqbilevel)
267
                    v->halfpq = 0;
268
            default: break; //Forbidden ?
269
            }
270
            if (v->dqbilevel || v->dqprofile != DQPROFILE_ALL_MBS)
271
            {
272
                pqdiff = get_bits(gb, 3);
273
                if (pqdiff == 7) v->altpq = get_bits(gb, 5);
274
                else v->altpq = v->pq + pqdiff + 1;
275
            }
276
        }
277
    }
278
    return 0;
279
}
280

    
281
static int decode_sequence_header_adv(VC1Context *v, GetBitContext *gb);
282

    
283
/**
284
 * Decode Simple/Main Profiles sequence header
285
 * @see Figure 7-8, p16-17
286
 * @param avctx Codec context
287
 * @param gb GetBit context initialized from Codec context extra_data
288
 * @return Status
289
 */
290
int vc1_decode_sequence_header(AVCodecContext *avctx, VC1Context *v, GetBitContext *gb)
291
{
292
    av_log(avctx, AV_LOG_DEBUG, "Header: %0X\n", show_bits(gb, 32));
293
    v->profile = get_bits(gb, 2);
294
    if (v->profile == PROFILE_COMPLEX)
295
    {
296
        av_log(avctx, AV_LOG_WARNING, "WMV3 Complex Profile is not fully supported\n");
297
    }
298

    
299
    if (v->profile == PROFILE_ADVANCED)
300
    {
301
        v->zz_8x4 = ff_vc1_adv_progressive_8x4_zz;
302
        v->zz_4x8 = ff_vc1_adv_progressive_4x8_zz;
303
        return decode_sequence_header_adv(v, gb);
304
    }
305
    else
306
    {
307
        v->zz_8x4 = wmv2_scantableA;
308
        v->zz_4x8 = wmv2_scantableB;
309
        v->res_y411   = get_bits1(gb);
310
        v->res_sprite = get_bits1(gb);
311
        if (v->res_y411)
312
        {
313
            av_log(avctx, AV_LOG_ERROR,
314
                   "Old interlaced mode is not supported\n");
315
            return -1;
316
        }
317
        if (v->res_sprite) {
318
            av_log(avctx, AV_LOG_ERROR, "WMVP is not fully supported\n");
319
        }
320
    }
321

    
322
    // (fps-2)/4 (->30)
323
    v->frmrtq_postproc = get_bits(gb, 3); //common
324
    // (bitrate-32kbps)/64kbps
325
    v->bitrtq_postproc = get_bits(gb, 5); //common
326
    v->s.loop_filter = get_bits1(gb); //common
327
    if(v->s.loop_filter == 1 && v->profile == PROFILE_SIMPLE)
328
    {
329
        av_log(avctx, AV_LOG_ERROR,
330
               "LOOPFILTER shall not be enabled in Simple Profile\n");
331
    }
332
    if(v->s.avctx->skip_loop_filter >= AVDISCARD_ALL)
333
        v->s.loop_filter = 0;
334

    
335
    v->res_x8 = get_bits1(gb); //reserved
336
    v->multires = get_bits1(gb);
337
    v->res_fasttx = get_bits1(gb);
338
    if (!v->res_fasttx)
339
    {
340
        v->vc1dsp.vc1_inv_trans_8x8 = ff_simple_idct;
341
        v->vc1dsp.vc1_inv_trans_8x4 = ff_simple_idct84_add;
342
        v->vc1dsp.vc1_inv_trans_4x8 = ff_simple_idct48_add;
343
        v->vc1dsp.vc1_inv_trans_4x4 = ff_simple_idct44_add;
344
        v->vc1dsp.vc1_inv_trans_8x8_dc = ff_simple_idct_add;
345
        v->vc1dsp.vc1_inv_trans_8x4_dc = ff_simple_idct84_add;
346
        v->vc1dsp.vc1_inv_trans_4x8_dc = ff_simple_idct48_add;
347
        v->vc1dsp.vc1_inv_trans_4x4_dc = ff_simple_idct44_add;
348
    }
349

    
350
    v->fastuvmc =  get_bits1(gb); //common
351
    if (!v->profile && !v->fastuvmc)
352
    {
353
        av_log(avctx, AV_LOG_ERROR,
354
               "FASTUVMC unavailable in Simple Profile\n");
355
        return -1;
356
    }
357
    v->extended_mv =  get_bits1(gb); //common
358
    if (!v->profile && v->extended_mv)
359
    {
360
        av_log(avctx, AV_LOG_ERROR,
361
               "Extended MVs unavailable in Simple Profile\n");
362
        return -1;
363
    }
364
    v->dquant =  get_bits(gb, 2); //common
365
    v->vstransform =  get_bits1(gb); //common
366

    
367
    v->res_transtab = get_bits1(gb);
368
    if (v->res_transtab)
369
    {
370
        av_log(avctx, AV_LOG_ERROR,
371
               "1 for reserved RES_TRANSTAB is forbidden\n");
372
        return -1;
373
    }
374

    
375
    v->overlap = get_bits1(gb); //common
376

    
377
    v->s.resync_marker = get_bits1(gb);
378
    v->rangered = get_bits1(gb);
379
    if (v->rangered && v->profile == PROFILE_SIMPLE)
380
    {
381
        av_log(avctx, AV_LOG_INFO,
382
               "RANGERED should be set to 0 in Simple Profile\n");
383
    }
384

    
385
    v->s.max_b_frames = avctx->max_b_frames = get_bits(gb, 3); //common
386
    v->quantizer_mode = get_bits(gb, 2); //common
387

    
388
    v->finterpflag = get_bits1(gb); //common
389

    
390
    if (v->res_sprite) {
391
        v->s.avctx->width  = v->s.avctx->coded_width  = get_bits(gb, 11);
392
        v->s.avctx->height = v->s.avctx->coded_height = get_bits(gb, 11);
393
        skip_bits(gb, 5); //frame rate
394
        v->res_x8 = get_bits1(gb);
395
        if (get_bits1(gb)) { // something to do with DC VLC selection
396
            av_log(avctx, AV_LOG_ERROR, "Unsupported sprite feature\n");
397
            return -1;
398
        }
399
        skip_bits(gb, 3); //slice code
400
        v->res_rtm_flag = 0;
401
    } else {
402
        v->res_rtm_flag = get_bits1(gb); //reserved
403
    }
404
    if (!v->res_rtm_flag)
405
    {
406
//            av_log(avctx, AV_LOG_ERROR,
407
//                   "0 for reserved RES_RTM_FLAG is forbidden\n");
408
        av_log(avctx, AV_LOG_ERROR,
409
               "Old WMV3 version detected, some frames may be decoded incorrectly\n");
410
        //return -1;
411
    }
412
    //TODO: figure out what they mean (always 0x402F)
413
    if(!v->res_fasttx) skip_bits(gb, 16);
414
    av_log(avctx, AV_LOG_DEBUG,
415
               "Profile %i:\nfrmrtq_postproc=%i, bitrtq_postproc=%i\n"
416
               "LoopFilter=%i, MultiRes=%i, FastUVMC=%i, Extended MV=%i\n"
417
               "Rangered=%i, VSTransform=%i, Overlap=%i, SyncMarker=%i\n"
418
               "DQuant=%i, Quantizer mode=%i, Max B frames=%i\n",
419
               v->profile, v->frmrtq_postproc, v->bitrtq_postproc,
420
               v->s.loop_filter, v->multires, v->fastuvmc, v->extended_mv,
421
               v->rangered, v->vstransform, v->overlap, v->s.resync_marker,
422
               v->dquant, v->quantizer_mode, avctx->max_b_frames
423
               );
424
    return 0;
425
}
426

    
427
static int decode_sequence_header_adv(VC1Context *v, GetBitContext *gb)
428
{
429
    v->res_rtm_flag = 1;
430
    v->level = get_bits(gb, 3);
431
    if(v->level >= 5)
432
    {
433
        av_log(v->s.avctx, AV_LOG_ERROR, "Reserved LEVEL %i\n",v->level);
434
    }
435
    v->chromaformat = get_bits(gb, 2);
436
    if (v->chromaformat != 1)
437
    {
438
        av_log(v->s.avctx, AV_LOG_ERROR,
439
               "Only 4:2:0 chroma format supported\n");
440
        return -1;
441
    }
442

    
443
    // (fps-2)/4 (->30)
444
    v->frmrtq_postproc = get_bits(gb, 3); //common
445
    // (bitrate-32kbps)/64kbps
446
    v->bitrtq_postproc = get_bits(gb, 5); //common
447
    v->postprocflag = get_bits1(gb); //common
448

    
449
    v->s.avctx->coded_width = (get_bits(gb, 12) + 1) << 1;
450
    v->s.avctx->coded_height = (get_bits(gb, 12) + 1) << 1;
451
    v->s.avctx->width = v->s.avctx->coded_width;
452
    v->s.avctx->height = v->s.avctx->coded_height;
453
    v->broadcast = get_bits1(gb);
454
    v->interlace = get_bits1(gb);
455
    v->tfcntrflag = get_bits1(gb);
456
    v->finterpflag = get_bits1(gb);
457
    skip_bits1(gb); // reserved
458

    
459
    v->s.h_edge_pos = v->s.avctx->coded_width;
460
    v->s.v_edge_pos = v->s.avctx->coded_height;
461

    
462
    av_log(v->s.avctx, AV_LOG_DEBUG,
463
               "Advanced Profile level %i:\nfrmrtq_postproc=%i, bitrtq_postproc=%i\n"
464
               "LoopFilter=%i, ChromaFormat=%i, Pulldown=%i, Interlace: %i\n"
465
               "TFCTRflag=%i, FINTERPflag=%i\n",
466
               v->level, v->frmrtq_postproc, v->bitrtq_postproc,
467
               v->s.loop_filter, v->chromaformat, v->broadcast, v->interlace,
468
               v->tfcntrflag, v->finterpflag
469
               );
470

    
471
    v->psf = get_bits1(gb);
472
    if(v->psf) { //PsF, 6.1.13
473
        av_log(v->s.avctx, AV_LOG_ERROR, "Progressive Segmented Frame mode: not supported (yet)\n");
474
        return -1;
475
    }
476
    v->s.max_b_frames = v->s.avctx->max_b_frames = 7;
477
    if(get_bits1(gb)) { //Display Info - decoding is not affected by it
478
        int w, h, ar = 0;
479
        av_log(v->s.avctx, AV_LOG_DEBUG, "Display extended info:\n");
480
        v->s.avctx->width  = w = get_bits(gb, 14) + 1;
481
        v->s.avctx->height = h = get_bits(gb, 14) + 1;
482
        av_log(v->s.avctx, AV_LOG_DEBUG, "Display dimensions: %ix%i\n", w, h);
483
        if(get_bits1(gb))
484
            ar = get_bits(gb, 4);
485
        if(ar && ar < 14){
486
            v->s.avctx->sample_aspect_ratio = ff_vc1_pixel_aspect[ar];
487
        }else if(ar == 15){
488
            w = get_bits(gb, 8);
489
            h = get_bits(gb, 8);
490
            v->s.avctx->sample_aspect_ratio = (AVRational){w, h};
491
        }
492
        av_log(v->s.avctx, AV_LOG_DEBUG, "Aspect: %i:%i\n", v->s.avctx->sample_aspect_ratio.num, v->s.avctx->sample_aspect_ratio.den);
493

    
494
        if(get_bits1(gb)){ //framerate stuff
495
            if(get_bits1(gb)) {
496
                v->s.avctx->time_base.num = 32;
497
                v->s.avctx->time_base.den = get_bits(gb, 16) + 1;
498
            } else {
499
                int nr, dr;
500
                nr = get_bits(gb, 8);
501
                dr = get_bits(gb, 4);
502
                if(nr && nr < 8 && dr && dr < 3){
503
                    v->s.avctx->time_base.num = ff_vc1_fps_dr[dr - 1];
504
                    v->s.avctx->time_base.den = ff_vc1_fps_nr[nr - 1] * 1000;
505
                }
506
            }
507
        }
508

    
509
        if(get_bits1(gb)){
510
            v->color_prim = get_bits(gb, 8);
511
            v->transfer_char = get_bits(gb, 8);
512
            v->matrix_coef = get_bits(gb, 8);
513
        }
514
    }
515

    
516
    v->hrd_param_flag = get_bits1(gb);
517
    if(v->hrd_param_flag) {
518
        int i;
519
        v->hrd_num_leaky_buckets = get_bits(gb, 5);
520
        skip_bits(gb, 4); //bitrate exponent
521
        skip_bits(gb, 4); //buffer size exponent
522
        for(i = 0; i < v->hrd_num_leaky_buckets; i++) {
523
            skip_bits(gb, 16); //hrd_rate[n]
524
            skip_bits(gb, 16); //hrd_buffer[n]
525
        }
526
    }
527
    return 0;
528
}
529

    
530
int vc1_decode_entry_point(AVCodecContext *avctx, VC1Context *v, GetBitContext *gb)
531
{
532
    int i;
533

    
534
    av_log(avctx, AV_LOG_DEBUG, "Entry point: %08X\n", show_bits_long(gb, 32));
535
    v->broken_link = get_bits1(gb);
536
    v->closed_entry = get_bits1(gb);
537
    v->panscanflag = get_bits1(gb);
538
    v->refdist_flag = get_bits1(gb);
539
    v->s.loop_filter = get_bits1(gb);
540
    v->fastuvmc = get_bits1(gb);
541
    v->extended_mv = get_bits1(gb);
542
    v->dquant = get_bits(gb, 2);
543
    v->vstransform = get_bits1(gb);
544
    v->overlap = get_bits1(gb);
545
    v->quantizer_mode = get_bits(gb, 2);
546

    
547
    if(v->hrd_param_flag){
548
        for(i = 0; i < v->hrd_num_leaky_buckets; i++) {
549
            skip_bits(gb, 8); //hrd_full[n]
550
        }
551
    }
552

    
553
    if(get_bits1(gb)){
554
        avctx->coded_width = (get_bits(gb, 12)+1)<<1;
555
        avctx->coded_height = (get_bits(gb, 12)+1)<<1;
556
    }
557
    if(v->extended_mv)
558
        v->extended_dmv = get_bits1(gb);
559
    if((v->range_mapy_flag = get_bits1(gb))) {
560
        av_log(avctx, AV_LOG_ERROR, "Luma scaling is not supported, expect wrong picture\n");
561
        v->range_mapy = get_bits(gb, 3);
562
    }
563
    if((v->range_mapuv_flag = get_bits1(gb))) {
564
        av_log(avctx, AV_LOG_ERROR, "Chroma scaling is not supported, expect wrong picture\n");
565
        v->range_mapuv = get_bits(gb, 3);
566
    }
567

    
568
    av_log(avctx, AV_LOG_DEBUG, "Entry point info:\n"
569
        "BrokenLink=%i, ClosedEntry=%i, PanscanFlag=%i\n"
570
        "RefDist=%i, Postproc=%i, FastUVMC=%i, ExtMV=%i\n"
571
        "DQuant=%i, VSTransform=%i, Overlap=%i, Qmode=%i\n",
572
        v->broken_link, v->closed_entry, v->panscanflag, v->refdist_flag, v->s.loop_filter,
573
        v->fastuvmc, v->extended_mv, v->dquant, v->vstransform, v->overlap, v->quantizer_mode);
574

    
575
    return 0;
576
}
577

    
578
int vc1_parse_frame_header(VC1Context *v, GetBitContext* gb)
579
{
580
    int pqindex, lowquant, status;
581

    
582
    if(v->finterpflag) v->interpfrm = get_bits1(gb);
583
    skip_bits(gb, 2); //framecnt unused
584
    v->rangeredfrm = 0;
585
    if (v->rangered) v->rangeredfrm = get_bits1(gb);
586
    v->s.pict_type = get_bits1(gb);
587
    if (v->s.avctx->max_b_frames) {
588
        if (!v->s.pict_type) {
589
            if (get_bits1(gb)) v->s.pict_type = AV_PICTURE_TYPE_I;
590
            else v->s.pict_type = AV_PICTURE_TYPE_B;
591
        } else v->s.pict_type = AV_PICTURE_TYPE_P;
592
    } else v->s.pict_type = v->s.pict_type ? AV_PICTURE_TYPE_P : AV_PICTURE_TYPE_I;
593

    
594
    v->bi_type = 0;
595
    if(v->s.pict_type == AV_PICTURE_TYPE_B) {
596
        v->bfraction_lut_index = get_vlc2(gb, ff_vc1_bfraction_vlc.table, VC1_BFRACTION_VLC_BITS, 1);
597
        v->bfraction = ff_vc1_bfraction_lut[v->bfraction_lut_index];
598
        if(v->bfraction == 0) {
599
            v->s.pict_type = AV_PICTURE_TYPE_BI;
600
        }
601
    }
602
    if(v->s.pict_type == AV_PICTURE_TYPE_I || v->s.pict_type == AV_PICTURE_TYPE_BI)
603
        skip_bits(gb, 7); // skip buffer fullness
604

    
605
    if(v->parse_only)
606
        return 0;
607

    
608
    /* calculate RND */
609
    if(v->s.pict_type == AV_PICTURE_TYPE_I || v->s.pict_type == AV_PICTURE_TYPE_BI)
610
        v->rnd = 1;
611
    if(v->s.pict_type == AV_PICTURE_TYPE_P)
612
        v->rnd ^= 1;
613

    
614
    /* Quantizer stuff */
615
    pqindex = get_bits(gb, 5);
616
    if(!pqindex) return -1;
617
    if (v->quantizer_mode == QUANT_FRAME_IMPLICIT)
618
        v->pq = ff_vc1_pquant_table[0][pqindex];
619
    else
620
        v->pq = ff_vc1_pquant_table[1][pqindex];
621

    
622
    v->pquantizer = 1;
623
    if (v->quantizer_mode == QUANT_FRAME_IMPLICIT)
624
        v->pquantizer = pqindex < 9;
625
    if (v->quantizer_mode == QUANT_NON_UNIFORM)
626
        v->pquantizer = 0;
627
    v->pqindex = pqindex;
628
    if (pqindex < 9) v->halfpq = get_bits1(gb);
629
    else v->halfpq = 0;
630
    if (v->quantizer_mode == QUANT_FRAME_EXPLICIT)
631
        v->pquantizer = get_bits1(gb);
632
    v->dquantfrm = 0;
633
    if (v->extended_mv == 1) v->mvrange = get_unary(gb, 0, 3);
634
    v->k_x = v->mvrange + 9 + (v->mvrange >> 1); //k_x can be 9 10 12 13
635
    v->k_y = v->mvrange + 8; //k_y can be 8 9 10 11
636
    v->range_x = 1 << (v->k_x - 1);
637
    v->range_y = 1 << (v->k_y - 1);
638
    if (v->multires && v->s.pict_type != AV_PICTURE_TYPE_B) v->respic = get_bits(gb, 2);
639

    
640
    if(v->res_x8 && (v->s.pict_type == AV_PICTURE_TYPE_I || v->s.pict_type == AV_PICTURE_TYPE_BI)){
641
        v->x8_type = get_bits1(gb);
642
    }else v->x8_type = 0;
643
//av_log(v->s.avctx, AV_LOG_INFO, "%c Frame: QP=[%i]%i (+%i/2) %i\n",
644
//        (v->s.pict_type == AV_PICTURE_TYPE_P) ? 'P' : ((v->s.pict_type == AV_PICTURE_TYPE_I) ? 'I' : 'B'), pqindex, v->pq, v->halfpq, v->rangeredfrm);
645

    
646
    if(v->s.pict_type == AV_PICTURE_TYPE_I || v->s.pict_type == AV_PICTURE_TYPE_P) v->use_ic = 0;
647

    
648
    switch(v->s.pict_type) {
649
    case AV_PICTURE_TYPE_P:
650
        if (v->pq < 5) v->tt_index = 0;
651
        else if(v->pq < 13) v->tt_index = 1;
652
        else v->tt_index = 2;
653

    
654
        lowquant = (v->pq > 12) ? 0 : 1;
655
        v->mv_mode = ff_vc1_mv_pmode_table[lowquant][get_unary(gb, 1, 4)];
656
        if (v->mv_mode == MV_PMODE_INTENSITY_COMP)
657
        {
658
            int scale, shift, i;
659
            v->mv_mode2 = ff_vc1_mv_pmode_table2[lowquant][get_unary(gb, 1, 3)];
660
            v->lumscale = get_bits(gb, 6);
661
            v->lumshift = get_bits(gb, 6);
662
            v->use_ic = 1;
663
            /* fill lookup tables for intensity compensation */
664
            if(!v->lumscale) {
665
                scale = -64;
666
                shift = (255 - v->lumshift * 2) << 6;
667
                if(v->lumshift > 31)
668
                    shift += 128 << 6;
669
            } else {
670
                scale = v->lumscale + 32;
671
                if(v->lumshift > 31)
672
                    shift = (v->lumshift - 64) << 6;
673
                else
674
                    shift = v->lumshift << 6;
675
            }
676
            for(i = 0; i < 256; i++) {
677
                v->luty[i] = av_clip_uint8((scale * i + shift + 32) >> 6);
678
                v->lutuv[i] = av_clip_uint8((scale * (i - 128) + 128*64 + 32) >> 6);
679
            }
680
        }
681
        if(v->mv_mode == MV_PMODE_1MV_HPEL || v->mv_mode == MV_PMODE_1MV_HPEL_BILIN)
682
            v->s.quarter_sample = 0;
683
        else if(v->mv_mode == MV_PMODE_INTENSITY_COMP) {
684
            if(v->mv_mode2 == MV_PMODE_1MV_HPEL || v->mv_mode2 == MV_PMODE_1MV_HPEL_BILIN)
685
                v->s.quarter_sample = 0;
686
            else
687
                v->s.quarter_sample = 1;
688
        } else
689
            v->s.quarter_sample = 1;
690
        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));
691

    
692
        if ((v->mv_mode == MV_PMODE_INTENSITY_COMP &&
693
                 v->mv_mode2 == MV_PMODE_MIXED_MV)
694
                || v->mv_mode == MV_PMODE_MIXED_MV)
695
        {
696
            status = bitplane_decoding(v->mv_type_mb_plane, &v->mv_type_is_raw, v);
697
            if (status < 0) return -1;
698
            av_log(v->s.avctx, AV_LOG_DEBUG, "MB MV Type plane encoding: "
699
                   "Imode: %i, Invert: %i\n", status>>1, status&1);
700
        } else {
701
            v->mv_type_is_raw = 0;
702
            memset(v->mv_type_mb_plane, 0, v->s.mb_stride * v->s.mb_height);
703
        }
704
        status = bitplane_decoding(v->s.mbskip_table, &v->skip_is_raw, v);
705
        if (status < 0) return -1;
706
        av_log(v->s.avctx, AV_LOG_DEBUG, "MB Skip plane encoding: "
707
               "Imode: %i, Invert: %i\n", status>>1, status&1);
708

    
709
        /* Hopefully this is correct for P frames */
710
        v->s.mv_table_index = get_bits(gb, 2); //but using ff_vc1_ tables
711
        v->cbpcy_vlc = &ff_vc1_cbpcy_p_vlc[get_bits(gb, 2)];
712

    
713
        if (v->dquant)
714
        {
715
            av_log(v->s.avctx, AV_LOG_DEBUG, "VOP DQuant info\n");
716
            vop_dquant_decoding(v);
717
        }
718

    
719
        v->ttfrm = 0; //FIXME Is that so ?
720
        if (v->vstransform)
721
        {
722
            v->ttmbf = get_bits1(gb);
723
            if (v->ttmbf)
724
            {
725
                v->ttfrm = ff_vc1_ttfrm_to_tt[get_bits(gb, 2)];
726
            }
727
        } else {
728
            v->ttmbf = 1;
729
            v->ttfrm = TT_8X8;
730
        }
731
        break;
732
    case AV_PICTURE_TYPE_B:
733
        if (v->pq < 5) v->tt_index = 0;
734
        else if(v->pq < 13) v->tt_index = 1;
735
        else v->tt_index = 2;
736

    
737
        v->mv_mode = get_bits1(gb) ? MV_PMODE_1MV : MV_PMODE_1MV_HPEL_BILIN;
738
        v->s.quarter_sample = (v->mv_mode == MV_PMODE_1MV);
739
        v->s.mspel = v->s.quarter_sample;
740

    
741
        status = bitplane_decoding(v->direct_mb_plane, &v->dmb_is_raw, v);
742
        if (status < 0) return -1;
743
        av_log(v->s.avctx, AV_LOG_DEBUG, "MB Direct Type plane encoding: "
744
               "Imode: %i, Invert: %i\n", status>>1, status&1);
745
        status = bitplane_decoding(v->s.mbskip_table, &v->skip_is_raw, v);
746
        if (status < 0) return -1;
747
        av_log(v->s.avctx, AV_LOG_DEBUG, "MB Skip plane encoding: "
748
               "Imode: %i, Invert: %i\n", status>>1, status&1);
749

    
750
        v->s.mv_table_index = get_bits(gb, 2);
751
        v->cbpcy_vlc = &ff_vc1_cbpcy_p_vlc[get_bits(gb, 2)];
752

    
753
        if (v->dquant)
754
        {
755
            av_log(v->s.avctx, AV_LOG_DEBUG, "VOP DQuant info\n");
756
            vop_dquant_decoding(v);
757
        }
758

    
759
        v->ttfrm = 0;
760
        if (v->vstransform)
761
        {
762
            v->ttmbf = get_bits1(gb);
763
            if (v->ttmbf)
764
            {
765
                v->ttfrm = ff_vc1_ttfrm_to_tt[get_bits(gb, 2)];
766
            }
767
        } else {
768
            v->ttmbf = 1;
769
            v->ttfrm = TT_8X8;
770
        }
771
        break;
772
    }
773

    
774
    if(!v->x8_type)
775
    {
776
        /* AC Syntax */
777
        v->c_ac_table_index = decode012(gb);
778
        if (v->s.pict_type == AV_PICTURE_TYPE_I || v->s.pict_type == AV_PICTURE_TYPE_BI)
779
        {
780
            v->y_ac_table_index = decode012(gb);
781
        }
782
        /* DC Syntax */
783
        v->s.dc_table_index = get_bits1(gb);
784
    }
785

    
786
    if(v->s.pict_type == AV_PICTURE_TYPE_BI) {
787
        v->s.pict_type = AV_PICTURE_TYPE_B;
788
        v->bi_type = 1;
789
    }
790
    return 0;
791
}
792

    
793
int vc1_parse_frame_header_adv(VC1Context *v, GetBitContext* gb)
794
{
795
    int pqindex, lowquant;
796
    int status;
797

    
798
    v->p_frame_skipped = 0;
799

    
800
    if(v->interlace){
801
        v->fcm = decode012(gb);
802
        if(v->fcm){
803
            if(!v->warn_interlaced++)
804
                av_log(v->s.avctx, AV_LOG_ERROR, "Interlaced frames/fields support is not implemented\n");
805
            return -1;
806
        }
807
    }
808
    switch(get_unary(gb, 0, 4)) {
809
    case 0:
810
        v->s.pict_type = AV_PICTURE_TYPE_P;
811
        break;
812
    case 1:
813
        v->s.pict_type = AV_PICTURE_TYPE_B;
814
        break;
815
    case 2:
816
        v->s.pict_type = AV_PICTURE_TYPE_I;
817
        break;
818
    case 3:
819
        v->s.pict_type = AV_PICTURE_TYPE_BI;
820
        break;
821
    case 4:
822
        v->s.pict_type = AV_PICTURE_TYPE_P; // skipped pic
823
        v->p_frame_skipped = 1;
824
        return 0;
825
    }
826
    if(v->tfcntrflag)
827
        skip_bits(gb, 8);
828
    if(v->broadcast) {
829
        if(!v->interlace || v->psf) {
830
            v->rptfrm = get_bits(gb, 2);
831
        } else {
832
            v->tff = get_bits1(gb);
833
            v->rptfrm = get_bits1(gb);
834
        }
835
    }
836
    if(v->panscanflag) {
837
        av_log_missing_feature(v->s.avctx, "Pan-scan", 0);
838
        //...
839
    }
840
    v->rnd = get_bits1(gb);
841
    if(v->interlace)
842
        v->uvsamp = get_bits1(gb);
843
    if(v->finterpflag) v->interpfrm = get_bits1(gb);
844
    if(v->s.pict_type == AV_PICTURE_TYPE_B) {
845
        v->bfraction_lut_index = get_vlc2(gb, ff_vc1_bfraction_vlc.table, VC1_BFRACTION_VLC_BITS, 1);
846
        v->bfraction = ff_vc1_bfraction_lut[v->bfraction_lut_index];
847
        if(v->bfraction == 0) {
848
            v->s.pict_type = AV_PICTURE_TYPE_BI; /* XXX: should not happen here */
849
        }
850
    }
851
    pqindex = get_bits(gb, 5);
852
    if(!pqindex) return -1;
853
    v->pqindex = pqindex;
854
    if (v->quantizer_mode == QUANT_FRAME_IMPLICIT)
855
        v->pq = ff_vc1_pquant_table[0][pqindex];
856
    else
857
        v->pq = ff_vc1_pquant_table[1][pqindex];
858

    
859
    v->pquantizer = 1;
860
    if (v->quantizer_mode == QUANT_FRAME_IMPLICIT)
861
        v->pquantizer = pqindex < 9;
862
    if (v->quantizer_mode == QUANT_NON_UNIFORM)
863
        v->pquantizer = 0;
864
    v->pqindex = pqindex;
865
    if (pqindex < 9) v->halfpq = get_bits1(gb);
866
    else v->halfpq = 0;
867
    if (v->quantizer_mode == QUANT_FRAME_EXPLICIT)
868
        v->pquantizer = get_bits1(gb);
869
    if(v->postprocflag)
870
        v->postproc = get_bits(gb, 2);
871

    
872
    if(v->s.pict_type == AV_PICTURE_TYPE_I || v->s.pict_type == AV_PICTURE_TYPE_P) v->use_ic = 0;
873

    
874
    if(v->parse_only)
875
        return 0;
876

    
877
    switch(v->s.pict_type) {
878
    case AV_PICTURE_TYPE_I:
879
    case AV_PICTURE_TYPE_BI:
880
        status = bitplane_decoding(v->acpred_plane, &v->acpred_is_raw, v);
881
        if (status < 0) return -1;
882
        av_log(v->s.avctx, AV_LOG_DEBUG, "ACPRED plane encoding: "
883
                "Imode: %i, Invert: %i\n", status>>1, status&1);
884
        v->condover = CONDOVER_NONE;
885
        if(v->overlap && v->pq <= 8) {
886
            v->condover = decode012(gb);
887
            if(v->condover == CONDOVER_SELECT) {
888
                status = bitplane_decoding(v->over_flags_plane, &v->overflg_is_raw, v);
889
                if (status < 0) return -1;
890
                av_log(v->s.avctx, AV_LOG_DEBUG, "CONDOVER plane encoding: "
891
                        "Imode: %i, Invert: %i\n", status>>1, status&1);
892
            }
893
        }
894
        break;
895
    case AV_PICTURE_TYPE_P:
896
        if (v->extended_mv) v->mvrange = get_unary(gb, 0, 3);
897
        else v->mvrange = 0;
898
        v->k_x = v->mvrange + 9 + (v->mvrange >> 1); //k_x can be 9 10 12 13
899
        v->k_y = v->mvrange + 8; //k_y can be 8 9 10 11
900
        v->range_x = 1 << (v->k_x - 1);
901
        v->range_y = 1 << (v->k_y - 1);
902

    
903
        if (v->pq < 5) v->tt_index = 0;
904
        else if(v->pq < 13) v->tt_index = 1;
905
        else v->tt_index = 2;
906

    
907
        lowquant = (v->pq > 12) ? 0 : 1;
908
        v->mv_mode = ff_vc1_mv_pmode_table[lowquant][get_unary(gb, 1, 4)];
909
        if (v->mv_mode == MV_PMODE_INTENSITY_COMP)
910
        {
911
            int scale, shift, i;
912
            v->mv_mode2 = ff_vc1_mv_pmode_table2[lowquant][get_unary(gb, 1, 3)];
913
            v->lumscale = get_bits(gb, 6);
914
            v->lumshift = get_bits(gb, 6);
915
            /* fill lookup tables for intensity compensation */
916
            if(!v->lumscale) {
917
                scale = -64;
918
                shift = (255 - v->lumshift * 2) << 6;
919
                if(v->lumshift > 31)
920
                    shift += 128 << 6;
921
            } else {
922
                scale = v->lumscale + 32;
923
                if(v->lumshift > 31)
924
                    shift = (v->lumshift - 64) << 6;
925
                else
926
                    shift = v->lumshift << 6;
927
            }
928
            for(i = 0; i < 256; i++) {
929
                v->luty[i] = av_clip_uint8((scale * i + shift + 32) >> 6);
930
                v->lutuv[i] = av_clip_uint8((scale * (i - 128) + 128*64 + 32) >> 6);
931
            }
932
            v->use_ic = 1;
933
        }
934
        if(v->mv_mode == MV_PMODE_1MV_HPEL || v->mv_mode == MV_PMODE_1MV_HPEL_BILIN)
935
            v->s.quarter_sample = 0;
936
        else if(v->mv_mode == MV_PMODE_INTENSITY_COMP) {
937
            if(v->mv_mode2 == MV_PMODE_1MV_HPEL || v->mv_mode2 == MV_PMODE_1MV_HPEL_BILIN)
938
                v->s.quarter_sample = 0;
939
            else
940
                v->s.quarter_sample = 1;
941
        } else
942
            v->s.quarter_sample = 1;
943
        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));
944

    
945
        if ((v->mv_mode == MV_PMODE_INTENSITY_COMP &&
946
                 v->mv_mode2 == MV_PMODE_MIXED_MV)
947
                || v->mv_mode == MV_PMODE_MIXED_MV)
948
        {
949
            status = bitplane_decoding(v->mv_type_mb_plane, &v->mv_type_is_raw, v);
950
            if (status < 0) return -1;
951
            av_log(v->s.avctx, AV_LOG_DEBUG, "MB MV Type plane encoding: "
952
                   "Imode: %i, Invert: %i\n", status>>1, status&1);
953
        } else {
954
            v->mv_type_is_raw = 0;
955
            memset(v->mv_type_mb_plane, 0, v->s.mb_stride * v->s.mb_height);
956
        }
957
        status = bitplane_decoding(v->s.mbskip_table, &v->skip_is_raw, v);
958
        if (status < 0) return -1;
959
        av_log(v->s.avctx, AV_LOG_DEBUG, "MB Skip plane encoding: "
960
               "Imode: %i, Invert: %i\n", status>>1, status&1);
961

    
962
        /* Hopefully this is correct for P frames */
963
        v->s.mv_table_index = get_bits(gb, 2); //but using ff_vc1_ tables
964
        v->cbpcy_vlc = &ff_vc1_cbpcy_p_vlc[get_bits(gb, 2)];
965
        if (v->dquant)
966
        {
967
            av_log(v->s.avctx, AV_LOG_DEBUG, "VOP DQuant info\n");
968
            vop_dquant_decoding(v);
969
        }
970

    
971
        v->ttfrm = 0; //FIXME Is that so ?
972
        if (v->vstransform)
973
        {
974
            v->ttmbf = get_bits1(gb);
975
            if (v->ttmbf)
976
            {
977
                v->ttfrm = ff_vc1_ttfrm_to_tt[get_bits(gb, 2)];
978
            }
979
        } else {
980
            v->ttmbf = 1;
981
            v->ttfrm = TT_8X8;
982
        }
983
        break;
984
    case AV_PICTURE_TYPE_B:
985
        if (v->extended_mv) v->mvrange = get_unary(gb, 0, 3);
986
        else v->mvrange = 0;
987
        v->k_x = v->mvrange + 9 + (v->mvrange >> 1); //k_x can be 9 10 12 13
988
        v->k_y = v->mvrange + 8; //k_y can be 8 9 10 11
989
        v->range_x = 1 << (v->k_x - 1);
990
        v->range_y = 1 << (v->k_y - 1);
991

    
992
        if (v->pq < 5) v->tt_index = 0;
993
        else if(v->pq < 13) v->tt_index = 1;
994
        else v->tt_index = 2;
995

    
996
        v->mv_mode = get_bits1(gb) ? MV_PMODE_1MV : MV_PMODE_1MV_HPEL_BILIN;
997
        v->s.quarter_sample = (v->mv_mode == MV_PMODE_1MV);
998
        v->s.mspel = v->s.quarter_sample;
999

    
1000
        status = bitplane_decoding(v->direct_mb_plane, &v->dmb_is_raw, v);
1001
        if (status < 0) return -1;
1002
        av_log(v->s.avctx, AV_LOG_DEBUG, "MB Direct Type plane encoding: "
1003
               "Imode: %i, Invert: %i\n", status>>1, status&1);
1004
        status = bitplane_decoding(v->s.mbskip_table, &v->skip_is_raw, v);
1005
        if (status < 0) return -1;
1006
        av_log(v->s.avctx, AV_LOG_DEBUG, "MB Skip plane encoding: "
1007
               "Imode: %i, Invert: %i\n", status>>1, status&1);
1008

    
1009
        v->s.mv_table_index = get_bits(gb, 2);
1010
        v->cbpcy_vlc = &ff_vc1_cbpcy_p_vlc[get_bits(gb, 2)];
1011

    
1012
        if (v->dquant)
1013
        {
1014
            av_log(v->s.avctx, AV_LOG_DEBUG, "VOP DQuant info\n");
1015
            vop_dquant_decoding(v);
1016
        }
1017

    
1018
        v->ttfrm = 0;
1019
        if (v->vstransform)
1020
        {
1021
            v->ttmbf = get_bits1(gb);
1022
            if (v->ttmbf)
1023
            {
1024
                v->ttfrm = ff_vc1_ttfrm_to_tt[get_bits(gb, 2)];
1025
            }
1026
        } else {
1027
            v->ttmbf = 1;
1028
            v->ttfrm = TT_8X8;
1029
        }
1030
        break;
1031
    }
1032

    
1033
    /* AC Syntax */
1034
    v->c_ac_table_index = decode012(gb);
1035
    if (v->s.pict_type == AV_PICTURE_TYPE_I || v->s.pict_type == AV_PICTURE_TYPE_BI)
1036
    {
1037
        v->y_ac_table_index = decode012(gb);
1038
    }
1039
    /* DC Syntax */
1040
    v->s.dc_table_index = get_bits1(gb);
1041
    if ((v->s.pict_type == AV_PICTURE_TYPE_I || v->s.pict_type == AV_PICTURE_TYPE_BI) && v->dquant) {
1042
        av_log(v->s.avctx, AV_LOG_DEBUG, "VOP DQuant info\n");
1043
        vop_dquant_decoding(v);
1044
    }
1045

    
1046
    v->bi_type = 0;
1047
    if(v->s.pict_type == AV_PICTURE_TYPE_BI) {
1048
        v->s.pict_type = AV_PICTURE_TYPE_B;
1049
        v->bi_type = 1;
1050
    }
1051
    return 0;
1052
}