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1 1457ab52 Michael Niedermayer
/*
2
 * Copyright (c) 2002 The FFmpeg Project.
3
 *
4
 * This library is free software; you can redistribute it and/or
5
 * modify it under the terms of the GNU Lesser General Public
6
 * License as published by the Free Software Foundation; either
7
 * version 2 of the License, or (at your option) any later version.
8
 *
9
 * This library is distributed in the hope that it will be useful,
10
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
11
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
12
 * Lesser General Public License for more details.
13
 *
14
 * You should have received a copy of the GNU Lesser General Public
15
 * License along with this library; if not, write to the Free Software
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 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
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 *
18
 */
19
20 983e3246 Michael Niedermayer
/**
21
 * @file wmv2.c
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 * wmv2 codec.
23
 */
24
 
25 1457ab52 Michael Niedermayer
#include "simple_idct.h"
26
 
27
#define SKIP_TYPE_NONE 0
28
#define SKIP_TYPE_MPEG 1
29
#define SKIP_TYPE_ROW  2
30
#define SKIP_TYPE_COL  3
31
32
33
typedef struct Wmv2Context{
34
    MpegEncContext s;
35
    int j_type_bit;
36
    int j_type;
37
    int flag3;
38
    int flag63;
39
    int abt_flag;
40
    int abt_type;
41
    int abt_type_table[6];
42
    int per_mb_abt;
43
    int per_block_abt;
44
    int mspel_bit;
45
    int cbp_table_index;
46
    int top_left_mv_flag;
47
    int per_mb_rl_bit;
48
    int skip_type;
49
    int hshift;
50
    
51
    ScanTable abt_scantable[2];
52
    DCTELEM abt_block2[6][64] __align8;
53
}Wmv2Context;
54
55
static void wmv2_common_init(Wmv2Context * w){
56
    MpegEncContext * const s= &w->s;
57
        
58 3d2e8cce Michael Niedermayer
    ff_init_scantable(s->dsp.idct_permutation, &w->abt_scantable[0], wmv2_scantableA);
59
    ff_init_scantable(s->dsp.idct_permutation, &w->abt_scantable[1], wmv2_scantableB);
60 1457ab52 Michael Niedermayer
}
61
62
static int encode_ext_header(Wmv2Context *w){
63
    MpegEncContext * const s= &w->s;
64
    PutBitContext pb;
65
    int code;
66
        
67 c58222c5 Alex Beregszaszi
    init_put_bits(&pb, s->avctx->extradata, s->avctx->extradata_size);
68 1457ab52 Michael Niedermayer
69 14bea432 Michael Niedermayer
    put_bits(&pb, 5, s->avctx->frame_rate / s->avctx->frame_rate_base); //yes 29.97 -> 29
70 1457ab52 Michael Niedermayer
    put_bits(&pb, 11, FFMIN(s->bit_rate/1024, 2047));
71
    
72
    put_bits(&pb, 1, w->mspel_bit=1);
73
    put_bits(&pb, 1, w->flag3=1);
74
    put_bits(&pb, 1, w->abt_flag=1);
75
    put_bits(&pb, 1, w->j_type_bit=1);
76
    put_bits(&pb, 1, w->top_left_mv_flag=0);
77
    put_bits(&pb, 1, w->per_mb_rl_bit=1);
78
    put_bits(&pb, 3, code=1);
79
    
80
    flush_put_bits(&pb);
81
82
    s->slice_height = s->mb_height / code;
83
    
84
    return 0;
85
}
86
87 7604246d Wolfgang Hesseler
#ifdef CONFIG_ENCODERS
88 1457ab52 Michael Niedermayer
static int wmv2_encode_init(AVCodecContext *avctx){
89
    Wmv2Context * const w= avctx->priv_data;
90
    
91
    if(MPV_encode_init(avctx) < 0)
92
        return -1;
93
    
94
    wmv2_common_init(w);
95
96
    avctx->extradata_size= 4;
97
    avctx->extradata= av_mallocz(avctx->extradata_size + 10);
98
    encode_ext_header(w);
99
    
100
    return 0;
101
}
102
103
static int wmv2_encode_end(AVCodecContext *avctx){
104
    
105
    if(MPV_encode_end(avctx) < 0)
106
        return -1;
107
    
108
    avctx->extradata_size= 0;
109
    av_freep(&avctx->extradata);
110
    
111
    return 0;
112
}
113
114
int ff_wmv2_encode_picture_header(MpegEncContext * s, int picture_number)
115
{
116
    Wmv2Context * const w= (Wmv2Context*)s;
117
118
    put_bits(&s->pb, 1, s->pict_type - 1);
119
    if(s->pict_type == I_TYPE){
120
        put_bits(&s->pb, 7, 0);
121
    }
122
    put_bits(&s->pb, 5, s->qscale);
123
124
    s->dc_table_index = 1;
125
    s->mv_table_index = 1; /* only if P frame */
126
//    s->use_skip_mb_code = 1; /* only if P frame */
127
    s->per_mb_rl_table = 0;
128
    s->mspel= 0;
129
    w->per_mb_abt=0;
130
    w->abt_type=0;
131
    w->j_type=0;
132
133 1f9aea9b Michael Niedermayer
    assert(s->flipflop_rounding);
134
135 1457ab52 Michael Niedermayer
    if (s->pict_type == I_TYPE) {
136 1f9aea9b Michael Niedermayer
        assert(s->no_rounding==1);
137 1457ab52 Michael Niedermayer
        if(w->j_type_bit) put_bits(&s->pb, 1, w->j_type);
138
        
139
        if(w->per_mb_rl_bit) put_bits(&s->pb, 1, s->per_mb_rl_table);
140
        
141
        if(!s->per_mb_rl_table){
142
            code012(&s->pb, s->rl_chroma_table_index);
143
            code012(&s->pb, s->rl_table_index);
144
        }
145
146
        put_bits(&s->pb, 1, s->dc_table_index);
147
148
        s->inter_intra_pred= 0;
149
    }else{
150
        int cbp_index;
151
152
        put_bits(&s->pb, 2, SKIP_TYPE_NONE);
153
        
154
        code012(&s->pb, cbp_index=0);
155
        if(s->qscale <= 10){
156
            int map[3]= {0,2,1};
157
            w->cbp_table_index= map[cbp_index];
158
        }else if(s->qscale <= 20){
159
            int map[3]= {1,0,2};
160
            w->cbp_table_index= map[cbp_index];
161
        }else{
162
            int map[3]= {2,1,0};
163
            w->cbp_table_index= map[cbp_index];
164
        }
165
166
        if(w->mspel_bit) put_bits(&s->pb, 1, s->mspel);
167
    
168
        if(w->abt_flag){
169
            put_bits(&s->pb, 1, w->per_mb_abt^1);
170
            if(!w->per_mb_abt){
171
                code012(&s->pb, w->abt_type);
172
            }
173
        }
174
175
        if(w->per_mb_rl_bit) put_bits(&s->pb, 1, s->per_mb_rl_table);
176
        
177
        if(!s->per_mb_rl_table){
178
            code012(&s->pb, s->rl_table_index);
179
            s->rl_chroma_table_index = s->rl_table_index;
180
        }
181
        put_bits(&s->pb, 1, s->dc_table_index);
182
        put_bits(&s->pb, 1, s->mv_table_index);
183
    
184
        s->inter_intra_pred= (s->width*s->height < 320*240 && s->bit_rate<=II_BITRATE);
185
    }
186
    s->esc3_level_length= 0;
187
    s->esc3_run_length= 0;
188
189
    return 0;
190
}
191
192
// nearly idential to wmv1 but thats just because we dont use the useless M$ crap features
193
// its duplicated here in case someone wants to add support for these carp features
194
void ff_wmv2_encode_mb(MpegEncContext * s, 
195
                       DCTELEM block[6][64],
196
                       int motion_x, int motion_y)
197
{
198
    Wmv2Context * const w= (Wmv2Context*)s;
199
    int cbp, coded_cbp, i;
200
    int pred_x, pred_y;
201 0c1a9eda Zdenek Kabelac
    uint8_t *coded_block;
202 1457ab52 Michael Niedermayer
203
    handle_slices(s);
204
    
205
    if (!s->mb_intra) {
206
        /* compute cbp */
207
        set_stat(ST_INTER_MB);
208
        cbp = 0;
209
        for (i = 0; i < 6; i++) {
210
            if (s->block_last_index[i] >= 0)
211
                cbp |= 1 << (5 - i);
212
        }
213
        
214
        put_bits(&s->pb, 
215
                 wmv2_inter_table[w->cbp_table_index][cbp + 64][1], 
216
                 wmv2_inter_table[w->cbp_table_index][cbp + 64][0]);
217
218
        /* motion vector */
219
        h263_pred_motion(s, 0, &pred_x, &pred_y);
220
        msmpeg4_encode_motion(s, motion_x - pred_x, 
221
                              motion_y - pred_y);
222
    } else {
223
        /* compute cbp */
224
        cbp = 0;
225
        coded_cbp = 0;
226
        for (i = 0; i < 6; i++) {
227
            int val, pred;
228
            val = (s->block_last_index[i] >= 1);
229
            cbp |= val << (5 - i);
230
            if (i < 4) {
231
                /* predict value for close blocks only for luma */
232
                pred = coded_block_pred(s, i, &coded_block);
233
                *coded_block = val;
234
                val = val ^ pred;
235
            }
236
            coded_cbp |= val << (5 - i);
237
        }
238
#if 0
239
        if (coded_cbp)
240
            printf("cbp=%x %x\n", cbp, coded_cbp);
241
#endif
242
243
        if (s->pict_type == I_TYPE) {
244
            set_stat(ST_INTRA_MB);
245
            put_bits(&s->pb, 
246
                     table_mb_intra[coded_cbp][1], table_mb_intra[coded_cbp][0]);
247
        } else {
248
            put_bits(&s->pb, 
249
                     wmv2_inter_table[w->cbp_table_index][cbp][1], 
250
                     wmv2_inter_table[w->cbp_table_index][cbp][0]);
251
        }
252
        set_stat(ST_INTRA_MB);
253
        put_bits(&s->pb, 1, 0);        /* no AC prediction yet */
254
        if(s->inter_intra_pred){
255
            s->h263_aic_dir=0;
256
            put_bits(&s->pb, table_inter_intra[s->h263_aic_dir][1], table_inter_intra[s->h263_aic_dir][0]);
257
        }
258
    }
259
260
    for (i = 0; i < 6; i++) {
261
        msmpeg4_encode_block(s, block[i], i);
262
    }
263
}
264 7604246d Wolfgang Hesseler
#endif //CONFIG_ENCODERS
265 1457ab52 Michael Niedermayer
266
static void parse_mb_skip(Wmv2Context * w){
267
    int mb_x, mb_y;
268
    MpegEncContext * const s= &w->s;
269 7bc9090a Michael Niedermayer
    uint32_t * const mb_type= s->current_picture_ptr->mb_type;
270 1457ab52 Michael Niedermayer
271
    w->skip_type= get_bits(&s->gb, 2);
272
    switch(w->skip_type){
273
    case SKIP_TYPE_NONE:
274
        for(mb_y=0; mb_y<s->mb_height; mb_y++){
275
            for(mb_x=0; mb_x<s->mb_width; mb_x++){
276 7bc9090a Michael Niedermayer
                mb_type[mb_y*s->mb_stride + mb_x]= MB_TYPE_16x16 | MB_TYPE_L0;
277 1457ab52 Michael Niedermayer
            }
278
        }
279
        break;
280
    case SKIP_TYPE_MPEG:
281
        for(mb_y=0; mb_y<s->mb_height; mb_y++){
282
            for(mb_x=0; mb_x<s->mb_width; mb_x++){
283 7bc9090a Michael Niedermayer
                mb_type[mb_y*s->mb_stride + mb_x]= (get_bits1(&s->gb) ? MB_TYPE_SKIP : 0) | MB_TYPE_16x16 | MB_TYPE_L0;
284 1457ab52 Michael Niedermayer
            }
285
        }
286
        break;
287
    case SKIP_TYPE_ROW:
288
        for(mb_y=0; mb_y<s->mb_height; mb_y++){
289
            if(get_bits1(&s->gb)){
290
                for(mb_x=0; mb_x<s->mb_width; mb_x++){
291 7bc9090a Michael Niedermayer
                    mb_type[mb_y*s->mb_stride + mb_x]=  MB_TYPE_SKIP | MB_TYPE_16x16 | MB_TYPE_L0;
292 1457ab52 Michael Niedermayer
                }
293
            }else{
294
                for(mb_x=0; mb_x<s->mb_width; mb_x++){
295 7bc9090a Michael Niedermayer
                    mb_type[mb_y*s->mb_stride + mb_x]= (get_bits1(&s->gb) ? MB_TYPE_SKIP : 0) | MB_TYPE_16x16 | MB_TYPE_L0;
296 1457ab52 Michael Niedermayer
                }
297
            }
298
        }
299
        break;
300
    case SKIP_TYPE_COL:
301
        for(mb_x=0; mb_x<s->mb_width; mb_x++){
302
            if(get_bits1(&s->gb)){
303
                for(mb_y=0; mb_y<s->mb_height; mb_y++){
304 7bc9090a Michael Niedermayer
                    mb_type[mb_y*s->mb_stride + mb_x]=  MB_TYPE_SKIP | MB_TYPE_16x16 | MB_TYPE_L0;
305 1457ab52 Michael Niedermayer
                }
306
            }else{
307
                for(mb_y=0; mb_y<s->mb_height; mb_y++){
308 7bc9090a Michael Niedermayer
                    mb_type[mb_y*s->mb_stride + mb_x]= (get_bits1(&s->gb) ? MB_TYPE_SKIP : 0) | MB_TYPE_16x16 | MB_TYPE_L0;
309 1457ab52 Michael Niedermayer
                }
310
            }
311
        }
312
        break;
313
    }
314
}
315
316
static int decode_ext_header(Wmv2Context *w){
317
    MpegEncContext * const s= &w->s;
318
    GetBitContext gb;
319
    int fps;
320
    int code;
321
322
    if(s->avctx->extradata_size<4) return -1;
323
    
324 68f593b4 Michael Niedermayer
    init_get_bits(&gb, s->avctx->extradata, s->avctx->extradata_size*8);
325 1457ab52 Michael Niedermayer
326
    fps                = get_bits(&gb, 5);
327
    s->bit_rate        = get_bits(&gb, 11)*1024;
328
    w->mspel_bit       = get_bits1(&gb);
329
    w->flag3           = get_bits1(&gb);
330
    w->abt_flag        = get_bits1(&gb);
331
    w->j_type_bit      = get_bits1(&gb);
332
    w->top_left_mv_flag= get_bits1(&gb);
333
    w->per_mb_rl_bit   = get_bits1(&gb);
334
    code               = get_bits(&gb, 3);
335
    
336
    if(code==0) return -1;
337 b0368839 Michael Niedermayer
338 1457ab52 Michael Niedermayer
    s->slice_height = s->mb_height / code;
339
340
    if(s->avctx->debug&FF_DEBUG_PICT_INFO){
341 9b879566 Michel Bardiaux
        av_log(s->avctx, AV_LOG_DEBUG, "fps:%d, br:%d, qpbit:%d, abt_flag:%d, j_type_bit:%d, tl_mv_flag:%d, mbrl_bit:%d, code:%d, flag3:%d, slices:%d\n", 
342 28269849 Michael Niedermayer
        fps, s->bit_rate, w->mspel_bit, w->abt_flag, w->j_type_bit, w->top_left_mv_flag, w->per_mb_rl_bit, code, w->flag3, 
343
        code);
344 1457ab52 Michael Niedermayer
    }
345
    return 0;
346
}
347
348
int ff_wmv2_decode_picture_header(MpegEncContext * s)
349
{
350
    Wmv2Context * const w= (Wmv2Context*)s;
351 487bce53 Michael Niedermayer
    int code;
352 1457ab52 Michael Niedermayer
353
#if 0
354
{
355
int i;
356
for(i=0; i<s->gb.size*8; i++)
357
    printf("%d", get_bits1(&s->gb));
358
//    get_bits1(&s->gb);
359
printf("END\n");
360
return -1;
361
}
362
#endif
363
    if(s->picture_number==0)
364
        decode_ext_header(w);
365
366
    s->pict_type = get_bits(&s->gb, 1) + 1;
367
    if(s->pict_type == I_TYPE){
368
        code = get_bits(&s->gb, 7);
369 9b879566 Michel Bardiaux
        av_log(s->avctx, AV_LOG_ERROR, "I7:%X/\n", code);
370 1457ab52 Michael Niedermayer
    }
371 6beeb962 Michael Niedermayer
    s->chroma_qscale= s->qscale = get_bits(&s->gb, 5);
372 487bce53 Michael Niedermayer
    if(s->qscale < 0)
373
       return -1;
374
       
375
    return 0;
376
}
377
378
int ff_wmv2_decode_secondary_picture_header(MpegEncContext * s)
379
{
380
    Wmv2Context * const w= (Wmv2Context*)s;
381 1457ab52 Michael Niedermayer
382
    if (s->pict_type == I_TYPE) {
383
        if(w->j_type_bit) w->j_type= get_bits1(&s->gb);
384
        else              w->j_type= 0; //FIXME check
385
        
386
        if(!w->j_type){
387
            if(w->per_mb_rl_bit) s->per_mb_rl_table= get_bits1(&s->gb);
388
            else                 s->per_mb_rl_table= 0;
389
        
390
            if(!s->per_mb_rl_table){
391
                s->rl_chroma_table_index = decode012(&s->gb);
392
                s->rl_table_index = decode012(&s->gb);
393
            }
394
395
            s->dc_table_index = get_bits1(&s->gb);
396
        }
397
        s->inter_intra_pred= 0;
398
        s->no_rounding = 1;
399
        if(s->avctx->debug&FF_DEBUG_PICT_INFO){
400 9b879566 Michel Bardiaux
            av_log(s->avctx, AV_LOG_DEBUG, "qscale:%d rlc:%d rl:%d dc:%d mbrl:%d j_type:%d \n", 
401 1457ab52 Michael Niedermayer
                s->qscale,
402
                s->rl_chroma_table_index,
403
                s->rl_table_index, 
404
                s->dc_table_index,
405
                s->per_mb_rl_table,
406
                w->j_type);
407
        }
408
    }else{
409
        int cbp_index;
410
        w->j_type=0;
411
412
        parse_mb_skip(w);
413
        cbp_index= decode012(&s->gb);
414
        if(s->qscale <= 10){
415
            int map[3]= {0,2,1};
416
            w->cbp_table_index= map[cbp_index];
417
        }else if(s->qscale <= 20){
418
            int map[3]= {1,0,2};
419
            w->cbp_table_index= map[cbp_index];
420
        }else{
421
            int map[3]= {2,1,0};
422
            w->cbp_table_index= map[cbp_index];
423
        }
424
425
        if(w->mspel_bit) s->mspel= get_bits1(&s->gb);
426
        else             s->mspel= 0; //FIXME check
427
    
428
        if(w->abt_flag){
429
            w->per_mb_abt= get_bits1(&s->gb)^1;
430
            if(!w->per_mb_abt){
431
                w->abt_type= decode012(&s->gb);
432
            }
433
        }
434
435
        if(w->per_mb_rl_bit) s->per_mb_rl_table= get_bits1(&s->gb);
436
        else                 s->per_mb_rl_table= 0;
437
        
438
        if(!s->per_mb_rl_table){
439
            s->rl_table_index = decode012(&s->gb);
440
            s->rl_chroma_table_index = s->rl_table_index;
441
        }
442
443
        s->dc_table_index = get_bits1(&s->gb);
444
        s->mv_table_index = get_bits1(&s->gb);
445
    
446
        s->inter_intra_pred= (s->width*s->height < 320*240 && s->bit_rate<=II_BITRATE);
447
        s->no_rounding ^= 1;
448
        
449
        if(s->avctx->debug&FF_DEBUG_PICT_INFO){
450 9b879566 Michel Bardiaux
            av_log(s->avctx, AV_LOG_DEBUG, "rl:%d rlc:%d dc:%d mv:%d mbrl:%d qp:%d mspel:%d per_mb_abt:%d abt_type:%d cbp:%d ii:%d\n", 
451 1457ab52 Michael Niedermayer
                s->rl_table_index, 
452
                s->rl_chroma_table_index, 
453
                s->dc_table_index,
454
                s->mv_table_index,
455
                s->per_mb_rl_table,
456
                s->qscale,
457
                s->mspel,
458
                w->per_mb_abt,
459
                w->abt_type,
460
                w->cbp_table_index,
461
                s->inter_intra_pred);
462
        }
463
    }
464
    s->esc3_level_length= 0;
465
    s->esc3_run_length= 0;
466
    
467
s->picture_number++; //FIXME ?
468
469
470
//    if(w->j_type)
471
//        return wmv2_decode_j_picture(w); //FIXME
472
473
    if(w->j_type){
474 9b879566 Michel Bardiaux
        av_log(s->avctx, AV_LOG_ERROR, "J-type picture isnt supported\n");
475 1457ab52 Michael Niedermayer
        return -1;
476
    }
477
478
    return 0;
479
}
480
481 5c91a675 Zdenek Kabelac
static void ff_wmv2_decode_init(MpegEncContext *s){
482 1457ab52 Michael Niedermayer
}
483
484
static inline int wmv2_decode_motion(Wmv2Context *w, int *mx_ptr, int *my_ptr){
485
    MpegEncContext * const s= &w->s;
486
    int ret;
487
   
488
    ret= msmpeg4_decode_motion(s, mx_ptr, my_ptr);
489
   
490
    if(ret<0) return -1;
491
   
492
    if((((*mx_ptr)|(*my_ptr)) & 1) && s->mspel)
493
        w->hshift= get_bits1(&s->gb);
494
    else 
495
        w->hshift= 0;
496
497
//printf("%d %d  ", *mx_ptr, *my_ptr);
498
   
499
    return 0;
500
}
501
502
static int16_t *wmv2_pred_motion(Wmv2Context *w, int *px, int *py){
503
    MpegEncContext * const s= &w->s;
504
    int xy, wrap, diff, type;
505 0c1a9eda Zdenek Kabelac
    int16_t *A, *B, *C, *mot_val;
506 1457ab52 Michael Niedermayer
507
    wrap = s->block_wrap[0];
508
    xy = s->block_index[0];
509
510 8d7ec294 Wolfgang Hesseler
    mot_val = s->current_picture.motion_val[0][xy];
511 1457ab52 Michael Niedermayer
512 8d7ec294 Wolfgang Hesseler
    A = s->current_picture.motion_val[0][xy - 1];
513
    B = s->current_picture.motion_val[0][xy - wrap];
514
    C = s->current_picture.motion_val[0][xy + 2 - wrap];
515 1457ab52 Michael Niedermayer
    
516
    diff= FFMAX(ABS(A[0] - B[0]), ABS(A[1] - B[1]));
517
    
518 69e1a1f2 Michael Niedermayer
    if(s->mb_x && !s->first_slice_line && !s->mspel && w->top_left_mv_flag && diff >= 8)
519 1457ab52 Michael Niedermayer
        type= get_bits1(&s->gb);
520
    else
521
        type= 2;
522
    
523
    if(type == 0){
524
        *px= A[0];
525
        *py= A[1];
526
    }else if(type == 1){
527
        *px= B[0];
528
        *py= B[1];
529
    }else{
530
        /* special case for first (slice) line */
531
        if (s->first_slice_line) {
532
            *px = A[0];
533
            *py = A[1];
534
        } else {
535
            *px = mid_pred(A[0], B[0], C[0]);
536
            *py = mid_pred(A[1], B[1], C[1]);
537
        }
538
    }
539
540
    return mot_val;
541
}
542
543
static inline int wmv2_decode_inter_block(Wmv2Context *w, DCTELEM *block, int n, int cbp){
544
    MpegEncContext * const s= &w->s;
545
    static const int sub_cbp_table[3]= {2,3,1};
546
    int sub_cbp;
547
548
    if(!cbp){ 
549
        s->block_last_index[n] = -1;
550
551
        return 0;
552
    }
553
    
554
    if(w->per_block_abt)
555
        w->abt_type= decode012(&s->gb);
556
#if 0
557
    if(w->per_block_abt)
558
        printf("B%d", w->abt_type);
559
#endif
560
    w->abt_type_table[n]= w->abt_type;
561
562
    if(w->abt_type){
563
//        const uint8_t *scantable= w->abt_scantable[w->abt_type-1].permutated;
564
        const uint8_t *scantable= w->abt_scantable[w->abt_type-1].scantable;
565
//        const uint8_t *scantable= w->abt_type-1 ? w->abt_scantable[1].permutated : w->abt_scantable[0].scantable;
566
567
        sub_cbp= sub_cbp_table[ decode012(&s->gb) ];
568
//        printf("S%d", sub_cbp);
569
570
        if(sub_cbp&1){
571
            if (msmpeg4_decode_block(s, block, n, 1, scantable) < 0)
572
                return -1;
573
        }
574
        
575
        if(sub_cbp&2){
576
            if (msmpeg4_decode_block(s, w->abt_block2[n], n, 1, scantable) < 0)
577
                return -1;
578
        }
579
        s->block_last_index[n] = 63;
580
581
        return 0;
582
    }else{
583
        return msmpeg4_decode_block(s, block, n, 1, s->inter_scantable.permutated);
584
    }
585
}
586
587
static void wmv2_add_block(Wmv2Context *w, DCTELEM *block1, uint8_t *dst, int stride, int n){
588
    MpegEncContext * const s= &w->s;
589 0c1a9eda Zdenek Kabelac
590 1457ab52 Michael Niedermayer
    switch(w->abt_type_table[n]){
591
    case 0:
592
        if (s->block_last_index[n] >= 0) {
593 b0368839 Michael Niedermayer
            s->dsp.idct_add (dst, stride, block1);
594 1457ab52 Michael Niedermayer
        }
595
        break;
596
    case 1:
597
        simple_idct84_add(dst           , stride, block1);
598
        simple_idct84_add(dst + 4*stride, stride, w->abt_block2[n]);
599
        memset(w->abt_block2[n], 0, 64*sizeof(DCTELEM));
600
        break;
601
    case 2:
602
        simple_idct48_add(dst           , stride, block1);
603
        simple_idct48_add(dst + 4       , stride, w->abt_block2[n]);
604
        memset(w->abt_block2[n], 0, 64*sizeof(DCTELEM));
605
        break;
606
    default:
607 9b879566 Michel Bardiaux
        av_log(s->avctx, AV_LOG_ERROR, "internal error in WMV2 abt\n");
608 1457ab52 Michael Niedermayer
    }
609
}
610
611
void ff_wmv2_add_mb(MpegEncContext *s, DCTELEM block1[6][64], uint8_t *dest_y, uint8_t *dest_cb, uint8_t *dest_cr){
612
    Wmv2Context * const w= (Wmv2Context*)s;
613
614
    wmv2_add_block(w, block1[0], dest_y                    , s->linesize, 0);
615
    wmv2_add_block(w, block1[1], dest_y + 8                , s->linesize, 1);
616
    wmv2_add_block(w, block1[2], dest_y +     8*s->linesize, s->linesize, 2);
617
    wmv2_add_block(w, block1[3], dest_y + 8 + 8*s->linesize, s->linesize, 3);
618
    
619
    if(s->flags&CODEC_FLAG_GRAY) return;
620
    
621
    wmv2_add_block(w, block1[4], dest_cb                   , s->uvlinesize, 4);
622
    wmv2_add_block(w, block1[5], dest_cr                   , s->uvlinesize, 5);
623
}
624
625
void ff_mspel_motion(MpegEncContext *s,
626 0c1a9eda Zdenek Kabelac
                               uint8_t *dest_y, uint8_t *dest_cb, uint8_t *dest_cr,
627
                               uint8_t **ref_picture, op_pixels_func (*pix_op)[4],
628 1457ab52 Michael Niedermayer
                               int motion_x, int motion_y, int h)
629
{
630
    Wmv2Context * const w= (Wmv2Context*)s;
631 0c1a9eda Zdenek Kabelac
    uint8_t *ptr;
632 1457ab52 Michael Niedermayer
    int dxy, offset, mx, my, src_x, src_y, v_edge_pos, linesize, uvlinesize;
633
    int emu=0;
634
    
635
    dxy = ((motion_y & 1) << 1) | (motion_x & 1);
636
    dxy = 2*dxy + w->hshift;
637
    src_x = s->mb_x * 16 + (motion_x >> 1);
638
    src_y = s->mb_y * 16 + (motion_y >> 1);
639
                
640
    /* WARNING: do no forget half pels */
641
    v_edge_pos = s->v_edge_pos;
642
    src_x = clip(src_x, -16, s->width);
643
    src_y = clip(src_y, -16, s->height);
644
    linesize   = s->linesize;
645
    uvlinesize = s->uvlinesize;
646
    ptr = ref_picture[0] + (src_y * linesize) + src_x;
647
648
    if(s->flags&CODEC_FLAG_EMU_EDGE){
649
        if(src_x<1 || src_y<1 || src_x + 17  >= s->h_edge_pos
650
                              || src_y + h+1 >= v_edge_pos){
651 ccdaf63d Mike Melanson
            ff_emulated_edge_mc(s->edge_emu_buffer, ptr - 1 - s->linesize, s->linesize, 19, 19, 
652 1457ab52 Michael Niedermayer
                             src_x-1, src_y-1, s->h_edge_pos, s->v_edge_pos);
653
            ptr= s->edge_emu_buffer + 1 + s->linesize;
654
            emu=1;
655
        }
656
    }
657
658
    s->dsp.put_mspel_pixels_tab[dxy](dest_y             , ptr             , linesize);
659
    s->dsp.put_mspel_pixels_tab[dxy](dest_y+8           , ptr+8           , linesize);
660
    s->dsp.put_mspel_pixels_tab[dxy](dest_y  +8*linesize, ptr  +8*linesize, linesize);
661
    s->dsp.put_mspel_pixels_tab[dxy](dest_y+8+8*linesize, ptr+8+8*linesize, linesize);
662
663
    if(s->flags&CODEC_FLAG_GRAY) return;
664
665
    if (s->out_format == FMT_H263) {
666
        dxy = 0;
667
        if ((motion_x & 3) != 0)
668
            dxy |= 1;
669
        if ((motion_y & 3) != 0)
670
            dxy |= 2;
671
        mx = motion_x >> 2;
672
        my = motion_y >> 2;
673
    } else {
674
        mx = motion_x / 2;
675
        my = motion_y / 2;
676
        dxy = ((my & 1) << 1) | (mx & 1);
677
        mx >>= 1;
678
        my >>= 1;
679
    }
680
    
681
    src_x = s->mb_x * 8 + mx;
682
    src_y = s->mb_y * 8 + my;
683
    src_x = clip(src_x, -8, s->width >> 1);
684
    if (src_x == (s->width >> 1))
685
        dxy &= ~1;
686
    src_y = clip(src_y, -8, s->height >> 1);
687
    if (src_y == (s->height >> 1))
688
        dxy &= ~2;
689
    offset = (src_y * uvlinesize) + src_x;
690
    ptr = ref_picture[1] + offset;
691
    if(emu){
692 c009df3f Michael Niedermayer
        ff_emulated_edge_mc(s->edge_emu_buffer, ptr, s->uvlinesize, 9, 9, 
693 1457ab52 Michael Niedermayer
                         src_x, src_y, s->h_edge_pos>>1, s->v_edge_pos>>1);
694
        ptr= s->edge_emu_buffer;
695
    }
696
    pix_op[1][dxy](dest_cb, ptr, uvlinesize, h >> 1);
697
698
    ptr = ref_picture[2] + offset;
699
    if(emu){
700 c009df3f Michael Niedermayer
        ff_emulated_edge_mc(s->edge_emu_buffer, ptr, s->uvlinesize, 9, 9, 
701 1457ab52 Michael Niedermayer
                         src_x, src_y, s->h_edge_pos>>1, s->v_edge_pos>>1);
702
        ptr= s->edge_emu_buffer;
703
    }
704
    pix_op[1][dxy](dest_cr, ptr, uvlinesize, h >> 1);
705
}
706
707
708
static int wmv2_decode_mb(MpegEncContext *s, DCTELEM block[6][64])
709
{
710
    Wmv2Context * const w= (Wmv2Context*)s;
711
    int cbp, code, i;
712 0c1a9eda Zdenek Kabelac
    uint8_t *coded_val;
713 1457ab52 Michael Niedermayer
714
    if(w->j_type) return 0;
715
    
716
    if (s->pict_type == P_TYPE) {
717 7bc9090a Michael Niedermayer
        if(IS_SKIP(s->current_picture.mb_type[s->mb_y * s->mb_stride + s->mb_x])){
718 1457ab52 Michael Niedermayer
            /* skip mb */
719
            s->mb_intra = 0;
720
            for(i=0;i<6;i++)
721
                s->block_last_index[i] = -1;
722
            s->mv_dir = MV_DIR_FORWARD;
723
            s->mv_type = MV_TYPE_16X16;
724
            s->mv[0][0][0] = 0;
725
            s->mv[0][0][1] = 0;
726
            s->mb_skiped = 1;
727 7d6e4279 Michael Niedermayer
            w->hshift=0;
728 1457ab52 Michael Niedermayer
            return 0;
729
        }
730
731
        code = get_vlc2(&s->gb, mb_non_intra_vlc[w->cbp_table_index].table, MB_NON_INTRA_VLC_BITS, 3);
732
        if (code < 0)
733
            return -1;
734
        s->mb_intra = (~code & 0x40) >> 6;
735
            
736
        cbp = code & 0x3f;
737
    } else {
738
        s->mb_intra = 1;
739
        code = get_vlc2(&s->gb, mb_intra_vlc.table, MB_INTRA_VLC_BITS, 2);
740
        if (code < 0){
741 9b879566 Michel Bardiaux
            av_log(s->avctx, AV_LOG_ERROR, "II-cbp illegal at %d %d\n", s->mb_x, s->mb_y);
742 1457ab52 Michael Niedermayer
            return -1;
743
        }
744
        /* predict coded block pattern */
745
        cbp = 0;
746
        for(i=0;i<6;i++) {
747
            int val = ((code >> (5 - i)) & 1);
748
            if (i < 4) {
749
                int pred = coded_block_pred(s, i, &coded_val);
750
                val = val ^ pred;
751
                *coded_val = val;
752
            }
753
            cbp |= val << (5 - i);
754
        }
755
    }
756
757
    if (!s->mb_intra) {
758
        int mx, my;
759
//printf("P at %d %d\n", s->mb_x, s->mb_y);
760
        wmv2_pred_motion(w, &mx, &my);
761
        
762
        if(cbp){
763
            if(s->per_mb_rl_table){
764
                s->rl_table_index = decode012(&s->gb);
765
                s->rl_chroma_table_index = s->rl_table_index;
766
            }
767
768
            if(w->abt_flag && w->per_mb_abt){
769
                w->per_block_abt= get_bits1(&s->gb);
770
                if(!w->per_block_abt)
771
                    w->abt_type= decode012(&s->gb);
772
            }else
773
                w->per_block_abt=0;
774
        }
775
        
776
        if (wmv2_decode_motion(w, &mx, &my) < 0)
777
            return -1;
778
779
        s->mv_dir = MV_DIR_FORWARD;
780
        s->mv_type = MV_TYPE_16X16;
781
        s->mv[0][0][0] = mx;
782
        s->mv[0][0][1] = my;
783
784
        for (i = 0; i < 6; i++) {
785
            if (wmv2_decode_inter_block(w, block[i], i, (cbp >> (5 - i)) & 1) < 0)
786
            {
787 9b879566 Michel Bardiaux
                av_log(s->avctx, AV_LOG_ERROR, "\nerror while decoding inter block: %d x %d (%d)\n", s->mb_x, s->mb_y, i);
788 1457ab52 Michael Niedermayer
                return -1;
789
            }
790
        }    
791
    } else {
792
//if(s->pict_type==P_TYPE)
793
//   printf("%d%d ", s->inter_intra_pred, cbp);
794
//printf("I at %d %d %d %06X\n", s->mb_x, s->mb_y, ((cbp&3)? 1 : 0) +((cbp&0x3C)? 2 : 0), show_bits(&s->gb, 24));
795
        s->ac_pred = get_bits1(&s->gb);
796
        if(s->inter_intra_pred){
797
            s->h263_aic_dir= get_vlc2(&s->gb, inter_intra_vlc.table, INTER_INTRA_VLC_BITS, 1);
798
//            printf("%d%d %d %d/", s->ac_pred, s->h263_aic_dir, s->mb_x, s->mb_y);
799
        }
800
        if(s->per_mb_rl_table && cbp){
801
            s->rl_table_index = decode012(&s->gb);
802
            s->rl_chroma_table_index = s->rl_table_index;
803
        }
804
    
805
        for (i = 0; i < 6; i++) {
806
            if (msmpeg4_decode_block(s, block[i], i, (cbp >> (5 - i)) & 1, NULL) < 0)
807
            {
808 9b879566 Michel Bardiaux
                av_log(s->avctx, AV_LOG_ERROR, "\nerror while decoding intra block: %d x %d (%d)\n", s->mb_x, s->mb_y, i);
809 1457ab52 Michael Niedermayer
                return -1;
810
            }
811
        }    
812
    }
813
814
    return 0;
815
}
816
817
static int wmv2_decode_init(AVCodecContext *avctx){
818
    Wmv2Context * const w= avctx->priv_data;
819
    
820
    if(ff_h263_decode_init(avctx) < 0)
821
        return -1;
822
    
823
    wmv2_common_init(w);
824
    
825
    return 0;
826
}
827
828
AVCodec wmv2_decoder = {
829
    "wmv2",
830
    CODEC_TYPE_VIDEO,
831
    CODEC_ID_WMV2,
832
    sizeof(Wmv2Context),
833
    wmv2_decode_init,
834
    NULL,
835
    ff_h263_decode_end,
836
    ff_h263_decode_frame,
837
    CODEC_CAP_DRAW_HORIZ_BAND | CODEC_CAP_DR1,
838
};
839
840 7604246d Wolfgang Hesseler
#ifdef CONFIG_ENCODERS
841 1457ab52 Michael Niedermayer
AVCodec wmv2_encoder = {
842
    "wmv2",
843
    CODEC_TYPE_VIDEO,
844
    CODEC_ID_WMV2,
845
    sizeof(Wmv2Context),
846
    wmv2_encode_init,
847
    MPV_encode_picture,
848
    MPV_encode_end,
849
};
850 7604246d Wolfgang Hesseler
#endif