GCC Code Coverage Report
Directory: ../../../ffmpeg/ Exec Total Coverage
File: src/libavcodec/rv34.c Lines: 936 1046 89.5 %
Date: 2020-10-23 17:01:47 Branches: 551 669 82.4 %

Line Branch Exec Source
1
/*
2
 * RV30/40 decoder common data
3
 * Copyright (c) 2007 Mike Melanson, Konstantin Shishkov
4
 *
5
 * This file is part of FFmpeg.
6
 *
7
 * FFmpeg is free software; you can redistribute it and/or
8
 * modify it under the terms of the GNU Lesser General Public
9
 * License as published by the Free Software Foundation; either
10
 * version 2.1 of the License, or (at your option) any later version.
11
 *
12
 * FFmpeg is distributed in the hope that it will be useful,
13
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
15
 * Lesser General Public License for more details.
16
 *
17
 * You should have received a copy of the GNU Lesser General Public
18
 * License along with FFmpeg; if not, write to the Free Software
19
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
20
 */
21
22
/**
23
 * @file
24
 * RV30/40 decoder common data
25
 */
26
27
#include "libavutil/imgutils.h"
28
#include "libavutil/internal.h"
29
30
#include "avcodec.h"
31
#include "error_resilience.h"
32
#include "mpegutils.h"
33
#include "mpegvideo.h"
34
#include "golomb.h"
35
#include "internal.h"
36
#include "mathops.h"
37
#include "mpeg_er.h"
38
#include "qpeldsp.h"
39
#include "rectangle.h"
40
#include "thread.h"
41
42
#include "rv34vlc.h"
43
#include "rv34data.h"
44
#include "rv34.h"
45
46
454602
static inline void ZERO8x2(void* dst, int stride)
47
{
48
454602
    fill_rectangle(dst,                 1, 2, stride, 0, 4);
49
454602
    fill_rectangle(((uint8_t*)(dst))+4, 1, 2, stride, 0, 4);
50
454602
}
51
52
/** translation of RV30/40 macroblock types to lavc ones */
53
static const int rv34_mb_type_to_lavc[12] = {
54
    MB_TYPE_INTRA,
55
    MB_TYPE_INTRA16x16              | MB_TYPE_SEPARATE_DC,
56
    MB_TYPE_16x16   | MB_TYPE_L0,
57
    MB_TYPE_8x8     | MB_TYPE_L0,
58
    MB_TYPE_16x16   | MB_TYPE_L0,
59
    MB_TYPE_16x16   | MB_TYPE_L1,
60
    MB_TYPE_SKIP,
61
    MB_TYPE_DIRECT2 | MB_TYPE_16x16,
62
    MB_TYPE_16x8    | MB_TYPE_L0,
63
    MB_TYPE_8x16    | MB_TYPE_L0,
64
    MB_TYPE_16x16   | MB_TYPE_L0L1,
65
    MB_TYPE_16x16   | MB_TYPE_L0    | MB_TYPE_SEPARATE_DC
66
};
67
68
69
static RV34VLC intra_vlcs[NUM_INTRA_TABLES], inter_vlcs[NUM_INTER_TABLES];
70
71
static int rv34_decode_mv(RV34DecContext *r, int block_type);
72
73
/**
74
 * @name RV30/40 VLC generating functions
75
 * @{
76
 */
77
78
static const int table_offs[] = {
79
      0,   1818,   3622,   4144,   4698,   5234,   5804,   5868,   5900,   5932,
80
   5996,   6252,   6316,   6348,   6380,   7674,   8944,  10274,  11668,  12250,
81
  14060,  15846,  16372,  16962,  17512,  18148,  18180,  18212,  18244,  18308,
82
  18564,  18628,  18660,  18692,  20036,  21314,  22648,  23968,  24614,  26384,
83
  28190,  28736,  29366,  29938,  30608,  30640,  30672,  30704,  30768,  31024,
84
  31088,  31120,  31184,  32570,  33898,  35236,  36644,  37286,  39020,  40802,
85
  41368,  42052,  42692,  43348,  43380,  43412,  43444,  43476,  43604,  43668,
86
  43700,  43732,  45100,  46430,  47778,  49160,  49802,  51550,  53340,  53972,
87
  54648,  55348,  55994,  56122,  56154,  56186,  56218,  56346,  56410,  56442,
88
  56474,  57878,  59290,  60636,  62036,  62682,  64460,  64524,  64588,  64716,
89
  64844,  66076,  67466,  67978,  68542,  69064,  69648,  70296,  72010,  72074,
90
  72138,  72202,  72330,  73572,  74936,  75454,  76030,  76566,  77176,  77822,
91
  79582,  79646,  79678,  79742,  79870,  81180,  82536,  83064,  83672,  84242,
92
  84934,  85576,  87384,  87448,  87480,  87544,  87672,  88982,  90340,  90902,
93
  91598,  92182,  92846,  93488,  95246,  95278,  95310,  95374,  95502,  96878,
94
  98266,  98848,  99542, 100234, 100884, 101524, 103320, 103352, 103384, 103416,
95
 103480, 104874, 106222, 106910, 107584, 108258, 108902, 109544, 111366, 111398,
96
 111430, 111462, 111494, 112878, 114320, 114988, 115660, 116310, 116950, 117592
97
};
98
99
static VLC_TYPE table_data[117592][2];
100
101
/**
102
 * Generate VLC from codeword lengths.
103
 * @param bits   codeword lengths (zeroes are accepted)
104
 * @param size   length of input data
105
 * @param vlc    output VLC
106
 * @param insyms symbols for input codes (NULL for default ones)
107
 * @param num    VLC table number (for static initialization)
108
 */
109
895
static void rv34_gen_vlc(const uint8_t *bits, int size, VLC *vlc, const uint8_t *insyms,
110
                         const int num)
111
{
112
    int i;
113
895
    int counts[17] = {0}, codes[17];
114
    uint16_t cw[MAX_VLC_SIZE], syms[MAX_VLC_SIZE];
115
    uint8_t bits2[MAX_VLC_SIZE];
116
895
    int maxbits = 0, realsize = 0;
117
118
291215
    for(i = 0; i < size; i++){
119
290320
        if(bits[i]){
120
289595
            bits2[realsize] = bits[i];
121
289595
            syms[realsize] = insyms ? insyms[i] : i;
122
289595
            realsize++;
123
289595
            maxbits = FFMAX(maxbits, bits[i]);
124
289595
            counts[bits[i]]++;
125
        }
126
    }
127
128
895
    codes[0] = 0;
129
15215
    for(i = 0; i < 16; i++)
130
14320
        codes[i+1] = (codes[i] + counts[i]) << 1;
131
290490
    for(i = 0; i < realsize; i++)
132
289595
        cw[i] = codes[bits2[i]]++;
133
134
895
    vlc->table = &table_data[table_offs[num]];
135
895
    vlc->table_allocated = table_offs[num + 1] - table_offs[num];
136
895
    ff_init_vlc_sparse(vlc, FFMIN(maxbits, 9), realsize,
137
                       bits2, 1, 1,
138
                       cw,    2, 2,
139
                       syms,  2, 2, INIT_VLC_USE_NEW_STATIC);
140
895
}
141
142
/**
143
 * Initialize all tables.
144
 */
145
5
static av_cold void rv34_init_tables(void)
146
{
147
    int i, j, k;
148
149
30
    for(i = 0; i < NUM_INTRA_TABLES; i++){
150
75
        for(j = 0; j < 2; j++){
151
50
            rv34_gen_vlc(rv34_table_intra_cbppat   [i][j], CBPPAT_VLC_SIZE,   &intra_vlcs[i].cbppattern[j],     NULL, 19*i + 0 + j);
152
50
            rv34_gen_vlc(rv34_table_intra_secondpat[i][j], OTHERBLK_VLC_SIZE, &intra_vlcs[i].second_pattern[j], NULL, 19*i + 2 + j);
153
50
            rv34_gen_vlc(rv34_table_intra_thirdpat [i][j], OTHERBLK_VLC_SIZE, &intra_vlcs[i].third_pattern[j],  NULL, 19*i + 4 + j);
154
250
            for(k = 0; k < 4; k++){
155
200
                rv34_gen_vlc(rv34_table_intra_cbp[i][j+k*2],  CBP_VLC_SIZE,   &intra_vlcs[i].cbp[j][k],         rv34_cbp_code, 19*i + 6 + j*4 + k);
156
            }
157
        }
158
125
        for(j = 0; j < 4; j++){
159
100
            rv34_gen_vlc(rv34_table_intra_firstpat[i][j], FIRSTBLK_VLC_SIZE, &intra_vlcs[i].first_pattern[j], NULL, 19*i + 14 + j);
160
        }
161
25
        rv34_gen_vlc(rv34_intra_coeff[i], COEFF_VLC_SIZE, &intra_vlcs[i].coefficient, NULL, 19*i + 18);
162
    }
163
164
40
    for(i = 0; i < NUM_INTER_TABLES; i++){
165
35
        rv34_gen_vlc(rv34_inter_cbppat[i], CBPPAT_VLC_SIZE, &inter_vlcs[i].cbppattern[0], NULL, i*12 + 95);
166
175
        for(j = 0; j < 4; j++){
167
140
            rv34_gen_vlc(rv34_inter_cbp[i][j], CBP_VLC_SIZE, &inter_vlcs[i].cbp[0][j], rv34_cbp_code, i*12 + 96 + j);
168
        }
169
105
        for(j = 0; j < 2; j++){
170
70
            rv34_gen_vlc(rv34_table_inter_firstpat [i][j], FIRSTBLK_VLC_SIZE, &inter_vlcs[i].first_pattern[j],  NULL, i*12 + 100 + j);
171
70
            rv34_gen_vlc(rv34_table_inter_secondpat[i][j], OTHERBLK_VLC_SIZE, &inter_vlcs[i].second_pattern[j], NULL, i*12 + 102 + j);
172
70
            rv34_gen_vlc(rv34_table_inter_thirdpat [i][j], OTHERBLK_VLC_SIZE, &inter_vlcs[i].third_pattern[j],  NULL, i*12 + 104 + j);
173
        }
174
35
        rv34_gen_vlc(rv34_inter_coeff[i], COEFF_VLC_SIZE, &inter_vlcs[i].coefficient, NULL, i*12 + 106);
175
    }
176
5
}
177
178
/** @} */ // vlc group
179
180
/**
181
 * @name RV30/40 4x4 block decoding functions
182
 * @{
183
 */
184
185
/**
186
 * Decode coded block pattern.
187
 */
188
129189
static int rv34_decode_cbp(GetBitContext *gb, RV34VLC *vlc, int table)
189
{
190
129189
    int pattern, code, cbp=0;
191
    int ones;
192
    static const int cbp_masks[3] = {0x100000, 0x010000, 0x110000};
193
    static const int shifts[4] = { 0, 2, 8, 10 };
194
129189
    const int *curshift = shifts;
195
    int i, t, mask;
196
197
129189
    code = get_vlc2(gb, vlc->cbppattern[table].table, 9, 2);
198
129189
    pattern = code & 0xF;
199
129189
    code >>= 4;
200
201
129189
    ones = rv34_count_ones[pattern];
202
203
645945
    for(mask = 8; mask; mask >>= 1, curshift++){
204
516756
        if(pattern & mask)
205
181416
            cbp |= get_vlc2(gb, vlc->cbp[table][ones].table, vlc->cbp[table][ones].bits, 1) << curshift[0];
206
    }
207
208
645945
    for(i = 0; i < 4; i++){
209
516756
        t = (modulo_three_table[code] >> (6 - 2*i)) & 3;
210
516756
        if(t == 1)
211
121158
            cbp |= cbp_masks[get_bits1(gb)] << i;
212
516756
        if(t == 2)
213
59165
            cbp |= cbp_masks[2] << i;
214
    }
215
129189
    return cbp;
216
}
217
218
/**
219
 * Get one coefficient value from the bitstream and store it.
220
 */
221
2269770
static inline void decode_coeff(int16_t *dst, int coef, int esc, GetBitContext *gb, VLC* vlc, int q)
222
{
223
2269770
    if(coef){
224
1158695
        if(coef == esc){
225
158483
            coef = get_vlc2(gb, vlc->table, 9, 2);
226
158483
            if(coef > 23){
227
139
                coef -= 23;
228
139
                coef = 22 + ((1 << coef) | get_bits(gb, coef));
229
            }
230
158483
            coef += esc;
231
        }
232
1158695
        if(get_bits1(gb))
233
572454
            coef = -coef;
234
1158695
        *dst = (coef*q + 8) >> 4;
235
    }
236
2269770
}
237
238
/**
239
 * Decode 2x2 subblock of coefficients.
240
 */
241
134059
static inline void decode_subblock(int16_t *dst, int code, const int is_block2, GetBitContext *gb, VLC *vlc, int q)
242
{
243
134059
    int flags = modulo_three_table[code];
244
245
134059
    decode_coeff(    dst+0*4+0, (flags >> 6)    , 3, gb, vlc, q);
246
134059
    if(is_block2){
247
83261
        decode_coeff(dst+1*4+0, (flags >> 4) & 3, 2, gb, vlc, q);
248
83261
        decode_coeff(dst+0*4+1, (flags >> 2) & 3, 2, gb, vlc, q);
249
    }else{
250
50798
        decode_coeff(dst+0*4+1, (flags >> 4) & 3, 2, gb, vlc, q);
251
50798
        decode_coeff(dst+1*4+0, (flags >> 2) & 3, 2, gb, vlc, q);
252
    }
253
134059
    decode_coeff(    dst+1*4+1, (flags >> 0) & 3, 2, gb, vlc, q);
254
134059
}
255
256
/**
257
 * Decode a single coefficient.
258
 */
259
404286
static inline void decode_subblock1(int16_t *dst, int code, GetBitContext *gb, VLC *vlc, int q)
260
{
261
404286
    int coeff = modulo_three_table[code] >> 6;
262
404286
    decode_coeff(dst, coeff, 3, gb, vlc, q);
263
404286
}
264
265
332312
static inline void decode_subblock3(int16_t *dst, int code, GetBitContext *gb, VLC *vlc,
266
                                    int q_dc, int q_ac1, int q_ac2)
267
{
268
332312
    int flags = modulo_three_table[code];
269
270
332312
    decode_coeff(dst+0*4+0, (flags >> 6)    , 3, gb, vlc, q_dc);
271
332312
    decode_coeff(dst+0*4+1, (flags >> 4) & 3, 2, gb, vlc, q_ac1);
272
332312
    decode_coeff(dst+1*4+0, (flags >> 2) & 3, 2, gb, vlc, q_ac1);
273
332312
    decode_coeff(dst+1*4+1, (flags >> 0) & 3, 2, gb, vlc, q_ac2);
274
332312
}
275
276
/**
277
 * Decode coefficients for 4x4 block.
278
 *
279
 * This is done by filling 2x2 subblocks with decoded coefficients
280
 * in this order (the same for subblocks and subblock coefficients):
281
 *  o--o
282
 *    /
283
 *   /
284
 *  o--o
285
 */
286
287
736598
static int rv34_decode_block(int16_t *dst, GetBitContext *gb, RV34VLC *rvlc, int fc, int sc, int q_dc, int q_ac1, int q_ac2)
288
{
289
736598
    int code, pattern, has_ac = 1;
290
291
736598
    code = get_vlc2(gb, rvlc->first_pattern[fc].table, 9, 2);
292
293
736598
    pattern = code & 0x7;
294
295
736598
    code >>= 3;
296
297
736598
    if (modulo_three_table[code] & 0x3F) {
298
332312
        decode_subblock3(dst, code, gb, &rvlc->coefficient, q_dc, q_ac1, q_ac2);
299
    } else {
300
404286
        decode_subblock1(dst, code, gb, &rvlc->coefficient, q_dc);
301
404286
        if (!pattern)
302
363407
            return 0;
303
40879
        has_ac = 0;
304
    }
305
306
373191
    if(pattern & 4){
307
44632
        code = get_vlc2(gb, rvlc->second_pattern[sc].table, 9, 2);
308
44632
        decode_subblock(dst + 4*0+2, code, 0, gb, &rvlc->coefficient, q_ac2);
309
    }
310
373191
    if(pattern & 2){ // Looks like coefficients 1 and 2 are swapped for this block
311
83261
        code = get_vlc2(gb, rvlc->second_pattern[sc].table, 9, 2);
312
83261
        decode_subblock(dst + 4*2+0, code, 1, gb, &rvlc->coefficient, q_ac2);
313
    }
314
373191
    if(pattern & 1){
315
6166
        code = get_vlc2(gb, rvlc->third_pattern[sc].table, 9, 2);
316
6166
        decode_subblock(dst + 4*2+2, code, 0, gb, &rvlc->coefficient, q_ac2);
317
    }
318
373191
    return has_ac | pattern;
319
}
320
321
/**
322
 * @name RV30/40 bitstream parsing
323
 * @{
324
 */
325
326
/**
327
 * Decode starting slice position.
328
 * @todo Maybe replace with ff_h263_decode_mba() ?
329
 */
330
2770
int ff_rv34_get_start_offset(GetBitContext *gb, int mb_size)
331
{
332
    int i;
333
10368
    for(i = 0; i < 5; i++)
334
10368
        if(rv34_mb_max_sizes[i] >= mb_size - 1)
335
2770
            break;
336
2770
    return rv34_mb_bits_sizes[i];
337
}
338
339
/**
340
 * Select VLC set for decoding from current quantizer, modifier and frame type.
341
 */
342
130283
static inline RV34VLC* choose_vlc_set(int quant, int mod, int type)
343
{
344

130283
    if(mod == 2 && quant < 19) quant += 10;
345

70216
    else if(mod && quant < 26) quant += 5;
346
97819
    return type ? &inter_vlcs[rv34_quant_to_vlc_set[1][av_clip(quant, 0, 30)]]
347
130283
                : &intra_vlcs[rv34_quant_to_vlc_set[0][av_clip(quant, 0, 30)]];
348
}
349
350
/**
351
 * Decode intra macroblock header and return CBP in case of success, -1 otherwise.
352
 */
353
7640
static int rv34_decode_intra_mb_header(RV34DecContext *r, int8_t *intra_types)
354
{
355
7640
    MpegEncContext *s = &r->s;
356
7640
    GetBitContext *gb = &s->gb;
357
7640
    int mb_pos = s->mb_x + s->mb_y * s->mb_stride;
358
    int t;
359
360
7640
    r->is16 = get_bits1(gb);
361
7640
    if(r->is16){
362
5830
        s->current_picture_ptr->mb_type[mb_pos] = MB_TYPE_INTRA16x16;
363
5830
        r->block_type = RV34_MB_TYPE_INTRA16x16;
364
5830
        t = get_bits(gb, 2);
365
5830
        fill_rectangle(intra_types, 4, 4, r->intra_types_stride, t, sizeof(intra_types[0]));
366
5830
        r->luma_vlc   = 2;
367
    }else{
368
1810
        if(!r->rv30){
369
467
            if(!get_bits1(gb))
370
                av_log(s->avctx, AV_LOG_ERROR, "Need DQUANT\n");
371
        }
372
1810
        s->current_picture_ptr->mb_type[mb_pos] = MB_TYPE_INTRA;
373
1810
        r->block_type = RV34_MB_TYPE_INTRA;
374
1810
        if(r->decode_intra_types(r, gb, intra_types) < 0)
375
            return -1;
376
1810
        r->luma_vlc   = 1;
377
    }
378
379
7640
    r->chroma_vlc = 0;
380
7640
    r->cur_vlcs   = choose_vlc_set(r->si.quant, r->si.vlc_set, 0);
381
382
7640
    return rv34_decode_cbp(gb, r->cur_vlcs, r->is16);
383
}
384
385
/**
386
 * Decode inter macroblock header and return CBP in case of success, -1 otherwise.
387
 */
388
284640
static int rv34_decode_inter_mb_header(RV34DecContext *r, int8_t *intra_types)
389
{
390
284640
    MpegEncContext *s = &r->s;
391
284640
    GetBitContext *gb = &s->gb;
392
284640
    int mb_pos = s->mb_x + s->mb_y * s->mb_stride;
393
    int i, t;
394
395
284640
    r->block_type = r->decode_mb_info(r);
396
284640
    if(r->block_type == -1)
397
        return -1;
398
284640
    s->current_picture_ptr->mb_type[mb_pos] = rv34_mb_type_to_lavc[r->block_type];
399
284640
    r->mb_type[mb_pos] = r->block_type;
400
284640
    if(r->block_type == RV34_MB_SKIP){
401
163091
        if(s->pict_type == AV_PICTURE_TYPE_P)
402
31305
            r->mb_type[mb_pos] = RV34_MB_P_16x16;
403
163091
        if(s->pict_type == AV_PICTURE_TYPE_B)
404
131786
            r->mb_type[mb_pos] = RV34_MB_B_DIRECT;
405
    }
406
284640
    r->is16 = !!IS_INTRA16x16(s->current_picture_ptr->mb_type[mb_pos]);
407
284640
    if (rv34_decode_mv(r, r->block_type) < 0)
408
        return -1;
409
284640
    if(r->block_type == RV34_MB_SKIP){
410
163091
        fill_rectangle(intra_types, 4, 4, r->intra_types_stride, 0, sizeof(intra_types[0]));
411
163091
        return 0;
412
    }
413
121549
    r->chroma_vlc = 1;
414
121549
    r->luma_vlc   = 0;
415
416
121549
    if(IS_INTRA(s->current_picture_ptr->mb_type[mb_pos])){
417
24277
        if(r->is16){
418
10976
            t = get_bits(gb, 2);
419
10976
            fill_rectangle(intra_types, 4, 4, r->intra_types_stride, t, sizeof(intra_types[0]));
420
10976
            r->luma_vlc   = 2;
421
        }else{
422
13301
            if(r->decode_intra_types(r, gb, intra_types) < 0)
423
                return -1;
424
13301
            r->luma_vlc   = 1;
425
        }
426
24277
        r->chroma_vlc = 0;
427
24277
        r->cur_vlcs = choose_vlc_set(r->si.quant, r->si.vlc_set, 0);
428
    }else{
429
1653624
        for(i = 0; i < 16; i++)
430
1556352
            intra_types[(i & 3) + (i>>2) * r->intra_types_stride] = 0;
431
97272
        r->cur_vlcs = choose_vlc_set(r->si.quant, r->si.vlc_set, 1);
432
97272
        if(r->mb_type[mb_pos] == RV34_MB_P_MIX16x16){
433
547
            r->is16 = 1;
434
547
            r->chroma_vlc = 1;
435
547
            r->luma_vlc   = 2;
436
547
            r->cur_vlcs = choose_vlc_set(r->si.quant, r->si.vlc_set, 0);
437
        }
438
    }
439
440
121549
    return rv34_decode_cbp(gb, r->cur_vlcs, r->is16);
441
}
442
443
/** @} */ //bitstream functions
444
445
/**
446
 * @name motion vector related code (prediction, reconstruction, motion compensation)
447
 * @{
448
 */
449
450
/** macroblock partition width in 8x8 blocks */
451
static const uint8_t part_sizes_w[RV34_MB_TYPES] = { 2, 2, 2, 1, 2, 2, 2, 2, 2, 1, 2, 2 };
452
453
/** macroblock partition height in 8x8 blocks */
454
static const uint8_t part_sizes_h[RV34_MB_TYPES] = { 2, 2, 2, 1, 2, 2, 2, 2, 1, 2, 2, 2 };
455
456
/** availability index for subblocks */
457
static const uint8_t avail_indexes[4] = { 6, 7, 10, 11 };
458
459
/**
460
 * motion vector prediction
461
 *
462
 * Motion prediction performed for the block by using median prediction of
463
 * motion vectors from the left, top and right top blocks but in corner cases
464
 * some other vectors may be used instead.
465
 */
466
42620
static void rv34_pred_mv(RV34DecContext *r, int block_type, int subblock_no, int dmv_no)
467
{
468
42620
    MpegEncContext *s = &r->s;
469
42620
    int mv_pos = s->mb_x * 2 + s->mb_y * 2 * s->b8_stride;
470
42620
    int A[2] = {0}, B[2], C[2];
471
    int i, j;
472
    int mx, my;
473
42620
    int* avail = r->avail_cache + avail_indexes[subblock_no];
474
42620
    int c_off = part_sizes_w[block_type];
475
476
42620
    mv_pos += (subblock_no & 1) + (subblock_no >> 1)*s->b8_stride;
477
42620
    if(subblock_no == 3)
478
4526
        c_off = -1;
479
480
42620
    if(avail[-1]){
481
41140
        A[0] = s->current_picture_ptr->motion_val[0][mv_pos-1][0];
482
41140
        A[1] = s->current_picture_ptr->motion_val[0][mv_pos-1][1];
483
    }
484
42620
    if(avail[-4]){
485
30363
        B[0] = s->current_picture_ptr->motion_val[0][mv_pos-s->b8_stride][0];
486
30363
        B[1] = s->current_picture_ptr->motion_val[0][mv_pos-s->b8_stride][1];
487
    }else{
488
12257
        B[0] = A[0];
489
12257
        B[1] = A[1];
490
    }
491
42620
    if(!avail[c_off-4]){
492

13924
        if(avail[-4] && (avail[-1] || r->rv30)){
493
1813
            C[0] = s->current_picture_ptr->motion_val[0][mv_pos-s->b8_stride-1][0];
494
1813
            C[1] = s->current_picture_ptr->motion_val[0][mv_pos-s->b8_stride-1][1];
495
        }else{
496
12111
            C[0] = A[0];
497
12111
            C[1] = A[1];
498
        }
499
    }else{
500
28696
        C[0] = s->current_picture_ptr->motion_val[0][mv_pos-s->b8_stride+c_off][0];
501
28696
        C[1] = s->current_picture_ptr->motion_val[0][mv_pos-s->b8_stride+c_off][1];
502
    }
503
42620
    mx = mid_pred(A[0], B[0], C[0]);
504
42620
    my = mid_pred(A[1], B[1], C[1]);
505
42620
    mx += r->dmv[dmv_no][0];
506
42620
    my += r->dmv[dmv_no][1];
507
107064
    for(j = 0; j < part_sizes_h[block_type]; j++){
508
165336
        for(i = 0; i < part_sizes_w[block_type]; i++){
509
100892
            s->current_picture_ptr->motion_val[0][mv_pos + i + j*s->b8_stride][0] = mx;
510
100892
            s->current_picture_ptr->motion_val[0][mv_pos + i + j*s->b8_stride][1] = my;
511
        }
512
    }
513
42620
}
514
515
#define GET_PTS_DIFF(a, b) (((a) - (b) + 8192) & 0x1FFF)
516
517
/**
518
 * Calculate motion vector component that should be added for direct blocks.
519
 */
520
802736
static int calc_add_mv(RV34DecContext *r, int dir, int val)
521
{
522
802736
    int mul = dir ? -r->mv_weight2 : r->mv_weight1;
523
524
802736
    return (int)(val * (SUINT)mul + 0x2000) >> 14;
525
}
526
527
/**
528
 * Predict motion vector for B-frame macroblock.
529
 */
530
47002
static inline void rv34_pred_b_vector(int A[2], int B[2], int C[2],
531
                                      int A_avail, int B_avail, int C_avail,
532
                                      int *mx, int *my)
533
{
534
47002
    if(A_avail + B_avail + C_avail != 3){
535
34307
        *mx = A[0] + B[0] + C[0];
536
34307
        *my = A[1] + B[1] + C[1];
537
34307
        if(A_avail + B_avail + C_avail == 2){
538
11581
            *mx /= 2;
539
11581
            *my /= 2;
540
        }
541
    }else{
542
12695
        *mx = mid_pred(A[0], B[0], C[0]);
543
12695
        *my = mid_pred(A[1], B[1], C[1]);
544
    }
545
47002
}
546
547
/**
548
 * motion vector prediction for B-frames
549
 */
550
47002
static void rv34_pred_mv_b(RV34DecContext *r, int block_type, int dir)
551
{
552
47002
    MpegEncContext *s = &r->s;
553
47002
    int mb_pos = s->mb_x + s->mb_y * s->mb_stride;
554
47002
    int mv_pos = s->mb_x * 2 + s->mb_y * 2 * s->b8_stride;
555
47002
    int A[2] = { 0 }, B[2] = { 0 }, C[2] = { 0 };
556
47002
    int has_A = 0, has_B = 0, has_C = 0;
557
    int mx, my;
558
    int i, j;
559
47002
    Picture *cur_pic = s->current_picture_ptr;
560
47002
    const int mask = dir ? MB_TYPE_L1 : MB_TYPE_L0;
561
47002
    int type = cur_pic->mb_type[mb_pos];
562
563
47002
    if((r->avail_cache[6-1] & type) & mask){
564
29561
        A[0] = cur_pic->motion_val[dir][mv_pos - 1][0];
565
29561
        A[1] = cur_pic->motion_val[dir][mv_pos - 1][1];
566
29561
        has_A = 1;
567
    }
568
47002
    if((r->avail_cache[6-4] & type) & mask){
569
24041
        B[0] = cur_pic->motion_val[dir][mv_pos - s->b8_stride][0];
570
24041
        B[1] = cur_pic->motion_val[dir][mv_pos - s->b8_stride][1];
571
24041
        has_B = 1;
572
    }
573

47002
    if(r->avail_cache[6-4] && (r->avail_cache[6-2] & type) & mask){
574
21963
        C[0] = cur_pic->motion_val[dir][mv_pos - s->b8_stride + 2][0];
575
21963
        C[1] = cur_pic->motion_val[dir][mv_pos - s->b8_stride + 2][1];
576
21963
        has_C = 1;
577

25039
    }else if((s->mb_x+1) == s->mb_width && (r->avail_cache[6-5] & type) & mask){
578
386
        C[0] = cur_pic->motion_val[dir][mv_pos - s->b8_stride - 1][0];
579
386
        C[1] = cur_pic->motion_val[dir][mv_pos - s->b8_stride - 1][1];
580
386
        has_C = 1;
581
    }
582
583
47002
    rv34_pred_b_vector(A, B, C, has_A, has_B, has_C, &mx, &my);
584
585
47002
    mx += r->dmv[dir][0];
586
47002
    my += r->dmv[dir][1];
587
588
141006
    for(j = 0; j < 2; j++){
589
282012
        for(i = 0; i < 2; i++){
590
188008
            cur_pic->motion_val[dir][mv_pos + i + j*s->b8_stride][0] = mx;
591
188008
            cur_pic->motion_val[dir][mv_pos + i + j*s->b8_stride][1] = my;
592
        }
593
    }
594

47002
    if(block_type == RV34_MB_B_BACKWARD || block_type == RV34_MB_B_FORWARD){
595
28476
        ZERO8x2(cur_pic->motion_val[!dir][mv_pos], s->b8_stride);
596
    }
597
47002
}
598
599
/**
600
 * motion vector prediction - RV3 version
601
 */
602
9134
static void rv34_pred_mv_rv3(RV34DecContext *r, int block_type, int dir)
603
{
604
9134
    MpegEncContext *s = &r->s;
605
9134
    int mv_pos = s->mb_x * 2 + s->mb_y * 2 * s->b8_stride;
606
9134
    int A[2] = {0}, B[2], C[2];
607
    int i, j, k;
608
    int mx, my;
609
9134
    int* avail = r->avail_cache + avail_indexes[0];
610
611
9134
    if(avail[-1]){
612
8666
        A[0] = s->current_picture_ptr->motion_val[0][mv_pos - 1][0];
613
8666
        A[1] = s->current_picture_ptr->motion_val[0][mv_pos - 1][1];
614
    }
615
9134
    if(avail[-4]){
616
8618
        B[0] = s->current_picture_ptr->motion_val[0][mv_pos - s->b8_stride][0];
617
8618
        B[1] = s->current_picture_ptr->motion_val[0][mv_pos - s->b8_stride][1];
618
    }else{
619
516
        B[0] = A[0];
620
516
        B[1] = A[1];
621
    }
622
9134
    if(!avail[-4 + 2]){
623

950
        if(avail[-4] && (avail[-1])){
624
434
            C[0] = s->current_picture_ptr->motion_val[0][mv_pos - s->b8_stride - 1][0];
625
434
            C[1] = s->current_picture_ptr->motion_val[0][mv_pos - s->b8_stride - 1][1];
626
        }else{
627
516
            C[0] = A[0];
628
516
            C[1] = A[1];
629
        }
630
    }else{
631
8184
        C[0] = s->current_picture_ptr->motion_val[0][mv_pos - s->b8_stride + 2][0];
632
8184
        C[1] = s->current_picture_ptr->motion_val[0][mv_pos - s->b8_stride + 2][1];
633
    }
634
9134
    mx = mid_pred(A[0], B[0], C[0]);
635
9134
    my = mid_pred(A[1], B[1], C[1]);
636
9134
    mx += r->dmv[0][0];
637
9134
    my += r->dmv[0][1];
638
27402
    for(j = 0; j < 2; j++){
639
54804
        for(i = 0; i < 2; i++){
640
109608
            for(k = 0; k < 2; k++){
641
73072
                s->current_picture_ptr->motion_val[k][mv_pos + i + j*s->b8_stride][0] = mx;
642
73072
                s->current_picture_ptr->motion_val[k][mv_pos + i + j*s->b8_stride][1] = my;
643
            }
644
        }
645
    }
646
9134
}
647
648
static const int chroma_coeffs[3] = { 0, 3, 5 };
649
650
/**
651
 * generic motion compensation function
652
 *
653
 * @param r decoder context
654
 * @param block_type type of the current block
655
 * @param xoff horizontal offset from the start of the current block
656
 * @param yoff vertical offset from the start of the current block
657
 * @param mv_off offset to the motion vector information
658
 * @param width width of the current partition in 8x8 blocks
659
 * @param height height of the current partition in 8x8 blocks
660
 * @param dir motion compensation direction (i.e. from the last or the next reference frame)
661
 * @param thirdpel motion vectors are specified in 1/3 of pixel
662
 * @param qpel_mc a set of functions used to perform luma motion compensation
663
 * @param chroma_mc a set of functions used to perform chroma motion compensation
664
 */
665
511743
static inline void rv34_mc(RV34DecContext *r, const int block_type,
666
                          const int xoff, const int yoff, int mv_off,
667
                          const int width, const int height, int dir,
668
                          const int thirdpel, int weighted,
669
                          qpel_mc_func (*qpel_mc)[16],
670
                          h264_chroma_mc_func (*chroma_mc))
671
{
672
511743
    MpegEncContext *s = &r->s;
673
    uint8_t *Y, *U, *V, *srcY, *srcU, *srcV;
674
    int dxy, mx, my, umx, umy, lx, ly, uvmx, uvmy, src_x, src_y, uvsrc_x, uvsrc_y;
675
511743
    int mv_pos = s->mb_x * 2 + s->mb_y * 2 * s->b8_stride + mv_off;
676
511743
    int is16x16 = 1;
677
511743
    int emu = 0;
678
679
511743
    if(thirdpel){
680
        int chroma_mx, chroma_my;
681
127708
        mx = (s->current_picture_ptr->motion_val[dir][mv_pos][0] + (3 << 24)) / 3 - (1 << 24);
682
127708
        my = (s->current_picture_ptr->motion_val[dir][mv_pos][1] + (3 << 24)) / 3 - (1 << 24);
683
127708
        lx = (s->current_picture_ptr->motion_val[dir][mv_pos][0] + (3 << 24)) % 3;
684
127708
        ly = (s->current_picture_ptr->motion_val[dir][mv_pos][1] + (3 << 24)) % 3;
685
127708
        chroma_mx = s->current_picture_ptr->motion_val[dir][mv_pos][0] / 2;
686
127708
        chroma_my = s->current_picture_ptr->motion_val[dir][mv_pos][1] / 2;
687
127708
        umx = (chroma_mx + (3 << 24)) / 3 - (1 << 24);
688
127708
        umy = (chroma_my + (3 << 24)) / 3 - (1 << 24);
689
127708
        uvmx = chroma_coeffs[(chroma_mx + (3 << 24)) % 3];
690
127708
        uvmy = chroma_coeffs[(chroma_my + (3 << 24)) % 3];
691
    }else{
692
        int cx, cy;
693
384035
        mx = s->current_picture_ptr->motion_val[dir][mv_pos][0] >> 2;
694
384035
        my = s->current_picture_ptr->motion_val[dir][mv_pos][1] >> 2;
695
384035
        lx = s->current_picture_ptr->motion_val[dir][mv_pos][0] & 3;
696
384035
        ly = s->current_picture_ptr->motion_val[dir][mv_pos][1] & 3;
697
384035
        cx = s->current_picture_ptr->motion_val[dir][mv_pos][0] / 2;
698
384035
        cy = s->current_picture_ptr->motion_val[dir][mv_pos][1] / 2;
699
384035
        umx = cx >> 2;
700
384035
        umy = cy >> 2;
701
384035
        uvmx = (cx & 3) << 1;
702
384035
        uvmy = (cy & 3) << 1;
703
        //due to some flaw RV40 uses the same MC compensation routine for H2V2 and H3V3
704

384035
        if(uvmx == 6 && uvmy == 6)
705
7377
            uvmx = uvmy = 4;
706
    }
707
708
511743
    if (HAVE_THREADS && (s->avctx->active_thread_type & FF_THREAD_FRAME)) {
709
        /* wait for the referenced mb row to be finished */
710
        int mb_row = s->mb_y + ((yoff + my + 5 + 8 * height) >> 4);
711
        ThreadFrame *f = dir ? &s->next_picture_ptr->tf : &s->last_picture_ptr->tf;
712
        ff_thread_await_progress(f, mb_row, 0);
713
    }
714
715
511743
    dxy = ly*4 + lx;
716
511743
    srcY = dir ? s->next_picture_ptr->f->data[0] : s->last_picture_ptr->f->data[0];
717
511743
    srcU = dir ? s->next_picture_ptr->f->data[1] : s->last_picture_ptr->f->data[1];
718
511743
    srcV = dir ? s->next_picture_ptr->f->data[2] : s->last_picture_ptr->f->data[2];
719
511743
    src_x = s->mb_x * 16 + xoff + mx;
720
511743
    src_y = s->mb_y * 16 + yoff + my;
721
511743
    uvsrc_x = s->mb_x * 8 + (xoff >> 1) + umx;
722
511743
    uvsrc_y = s->mb_y * 8 + (yoff >> 1) + umy;
723
511743
    srcY += src_y * s->linesize + src_x;
724
511743
    srcU += uvsrc_y * s->uvlinesize + uvsrc_x;
725
511743
    srcV += uvsrc_y * s->uvlinesize + uvsrc_x;
726

511743
    if(s->h_edge_pos - (width << 3) < 6 || s->v_edge_pos - (height << 3) < 6 ||
727

511743
       (unsigned)(src_x - !!lx*2) > s->h_edge_pos - !!lx*2 - (width <<3) - 4 ||
728

495678
       (unsigned)(src_y - !!ly*2) > s->v_edge_pos - !!ly*2 - (height<<3) - 4) {
729
43652
        srcY -= 2 + 2*s->linesize;
730
43652
        s->vdsp.emulated_edge_mc(s->sc.edge_emu_buffer, srcY,
731
                                 s->linesize, s->linesize,
732
43652
                                 (width << 3) + 6, (height << 3) + 6,
733
                                 src_x - 2, src_y - 2,
734
                                 s->h_edge_pos, s->v_edge_pos);
735
43652
        srcY = s->sc.edge_emu_buffer + 2 + 2*s->linesize;
736
43652
        emu = 1;
737
    }
738
511743
    if(!weighted){
739
230597
        Y = s->dest[0] + xoff      + yoff     *s->linesize;
740
230597
        U = s->dest[1] + (xoff>>1) + (yoff>>1)*s->uvlinesize;
741
230597
        V = s->dest[2] + (xoff>>1) + (yoff>>1)*s->uvlinesize;
742
    }else{
743
281146
        Y = r->tmp_b_block_y [dir]     +  xoff     +  yoff    *s->linesize;
744
281146
        U = r->tmp_b_block_uv[dir*2]   + (xoff>>1) + (yoff>>1)*s->uvlinesize;
745
281146
        V = r->tmp_b_block_uv[dir*2+1] + (xoff>>1) + (yoff>>1)*s->uvlinesize;
746
    }
747
748
511743
    if(block_type == RV34_MB_P_16x8){
749
2692
        qpel_mc[1][dxy](Y, srcY, s->linesize);
750
2692
        Y    += 8;
751
2692
        srcY += 8;
752
509051
    }else if(block_type == RV34_MB_P_8x16){
753
4946
        qpel_mc[1][dxy](Y, srcY, s->linesize);
754
4946
        Y    += 8 * s->linesize;
755
4946
        srcY += 8 * s->linesize;
756
    }
757

511743
    is16x16 = (block_type != RV34_MB_P_8x8) && (block_type != RV34_MB_P_16x8) && (block_type != RV34_MB_P_8x16);
758
511743
    qpel_mc[!is16x16][dxy](Y, srcY, s->linesize);
759
511743
    if (emu) {
760
43652
        uint8_t *uvbuf = s->sc.edge_emu_buffer;
761
762
43652
        s->vdsp.emulated_edge_mc(uvbuf, srcU,
763
                                 s->uvlinesize, s->uvlinesize,
764
43652
                                 (width << 2) + 1, (height << 2) + 1,
765
                                 uvsrc_x, uvsrc_y,
766
43652
                                 s->h_edge_pos >> 1, s->v_edge_pos >> 1);
767
43652
        srcU = uvbuf;
768
43652
        uvbuf += 9*s->uvlinesize;
769
770
43652
        s->vdsp.emulated_edge_mc(uvbuf, srcV,
771
                                 s->uvlinesize, s->uvlinesize,
772
43652
                                 (width << 2) + 1, (height << 2) + 1,
773
                                 uvsrc_x, uvsrc_y,
774
43652
                                 s->h_edge_pos >> 1, s->v_edge_pos >> 1);
775
43652
        srcV = uvbuf;
776
    }
777
511743
    chroma_mc[2-width]   (U, srcU, s->uvlinesize, height*4, uvmx, uvmy);
778
511743
    chroma_mc[2-width]   (V, srcV, s->uvlinesize, height*4, uvmx, uvmy);
779
511743
}
780
781
111535
static void rv34_mc_1mv(RV34DecContext *r, const int block_type,
782
                        const int xoff, const int yoff, int mv_off,
783
                        const int width, const int height, int dir)
784
{
785
111535
    rv34_mc(r, block_type, xoff, yoff, mv_off, width, height, dir, r->rv30, 0,
786
111535
            r->rdsp.put_pixels_tab,
787
111535
            r->rdsp.put_chroma_pixels_tab);
788
111535
}
789
790
115964
static void rv4_weight(RV34DecContext *r)
791
{
792
115964
    r->rdsp.rv40_weight_pixels_tab[r->scaled_weight][0](r->s.dest[0],
793
                                                        r->tmp_b_block_y[0],
794
                                                        r->tmp_b_block_y[1],
795
                                                        r->weight1,
796
                                                        r->weight2,
797
                                                        r->s.linesize);
798
115964
    r->rdsp.rv40_weight_pixels_tab[r->scaled_weight][1](r->s.dest[1],
799
                                                        r->tmp_b_block_uv[0],
800
                                                        r->tmp_b_block_uv[2],
801
                                                        r->weight1,
802
                                                        r->weight2,
803
                                                        r->s.uvlinesize);
804
115964
    r->rdsp.rv40_weight_pixels_tab[r->scaled_weight][1](r->s.dest[2],
805
                                                        r->tmp_b_block_uv[1],
806
                                                        r->tmp_b_block_uv[3],
807
                                                        r->weight1,
808
                                                        r->weight2,
809
                                                        r->s.uvlinesize);
810
115964
}
811
812
154932
static void rv34_mc_2mv(RV34DecContext *r, const int block_type)
813
{
814

154932
    int weighted = !r->rv30 && block_type != RV34_MB_B_BIDIR && r->weight1 != 8192;
815
816
154932
    rv34_mc(r, block_type, 0, 0, 0, 2, 2, 0, r->rv30, weighted,
817
154932
            r->rdsp.put_pixels_tab,
818
154932
            r->rdsp.put_chroma_pixels_tab);
819
154932
    if(!weighted){
820
47171
        rv34_mc(r, block_type, 0, 0, 0, 2, 2, 1, r->rv30, 0,
821
47171
                r->rdsp.avg_pixels_tab,
822
47171
                r->rdsp.avg_chroma_pixels_tab);
823
    }else{
824
107761
        rv34_mc(r, block_type, 0, 0, 0, 2, 2, 1, r->rv30, 1,
825
107761
                r->rdsp.put_pixels_tab,
826
107761
                r->rdsp.put_chroma_pixels_tab);
827
107761
        rv4_weight(r);
828
    }
829
154932
}
830
831
11293
static void rv34_mc_2mv_skip(RV34DecContext *r)
832
{
833
    int i, j;
834

11293
    int weighted = !r->rv30 && r->weight1 != 8192;
835
836
33879
    for(j = 0; j < 2; j++)
837
67758
        for(i = 0; i < 2; i++){
838
45172
             rv34_mc(r, RV34_MB_P_8x8, i*8, j*8, i+j*r->s.b8_stride, 1, 1, 0, r->rv30,
839
                     weighted,
840
45172
                     r->rdsp.put_pixels_tab,
841
45172
                     r->rdsp.put_chroma_pixels_tab);
842

45172
             rv34_mc(r, RV34_MB_P_8x8, i*8, j*8, i+j*r->s.b8_stride, 1, 1, 1, r->rv30,
843
                     weighted,
844
                     weighted ? r->rdsp.put_pixels_tab : r->rdsp.avg_pixels_tab,
845
                     weighted ? r->rdsp.put_chroma_pixels_tab : r->rdsp.avg_chroma_pixels_tab);
846
        }
847
11293
    if(weighted)
848
8203
        rv4_weight(r);
849
11293
}
850
851
/** number of motion vectors in each macroblock type */
852
static const int num_mvs[RV34_MB_TYPES] = { 0, 0, 1, 4, 1, 1, 0, 0, 2, 2, 2, 1 };
853
854
/**
855
 * Decode motion vector differences
856
 * and perform motion vector reconstruction and motion compensation.
857
 */
858
284640
static int rv34_decode_mv(RV34DecContext *r, int block_type)
859
{
860
284640
    MpegEncContext *s = &r->s;
861
284640
    GetBitContext *gb = &s->gb;
862
    int i, j, k, l;
863
284640
    int mv_pos = s->mb_x * 2 + s->mb_y * 2 * s->b8_stride;
864
    int next_bt;
865
866
284640
    memset(r->dmv, 0, sizeof(r->dmv));
867
383396
    for(i = 0; i < num_mvs[block_type]; i++){
868
98756
        r->dmv[i][0] = get_interleaved_se_golomb(gb);
869
98756
        r->dmv[i][1] = get_interleaved_se_golomb(gb);
870
98756
        if (r->dmv[i][0] == INVALID_VLC ||
871
98756
            r->dmv[i][1] == INVALID_VLC) {
872
            r->dmv[i][0] = r->dmv[i][1] = 0;
873
            return AVERROR_INVALIDDATA;
874
        }
875
    }
876


284640
    switch(block_type){
877
24277
    case RV34_MB_TYPE_INTRA:
878
    case RV34_MB_TYPE_INTRA16x16:
879
24277
        ZERO8x2(s->current_picture_ptr->motion_val[0][s->mb_x * 2 + s->mb_y * 2 * s->b8_stride], s->b8_stride);
880
24277
        return 0;
881
163091
    case RV34_MB_SKIP:
882
163091
        if(s->pict_type == AV_PICTURE_TYPE_P){
883
31305
            ZERO8x2(s->current_picture_ptr->motion_val[0][s->mb_x * 2 + s->mb_y * 2 * s->b8_stride], s->b8_stride);
884
31305
            rv34_mc_1mv (r, block_type, 0, 0, 0, 2, 2, 0);
885
31305
            break;
886
        }
887
    case RV34_MB_B_DIRECT:
888
        //surprisingly, it uses motion scheme from next reference frame
889
        /* wait for the current mb row to be finished */
890
156962
        if (HAVE_THREADS && (s->avctx->active_thread_type & FF_THREAD_FRAME))
891
            ff_thread_await_progress(&s->next_picture_ptr->tf, FFMAX(0, s->mb_y-1), 0);
892
893
156962
        next_bt = s->next_picture_ptr->mb_type[s->mb_x + s->mb_y * s->mb_stride];
894

156962
        if(IS_INTRA(next_bt) || IS_SKIP(next_bt)){
895
106791
            ZERO8x2(s->current_picture_ptr->motion_val[0][s->mb_x * 2 + s->mb_y * 2 * s->b8_stride], s->b8_stride);
896
106791
            ZERO8x2(s->current_picture_ptr->motion_val[1][s->mb_x * 2 + s->mb_y * 2 * s->b8_stride], s->b8_stride);
897
        }else
898
150513
            for(j = 0; j < 2; j++)
899
301026
                for(i = 0; i < 2; i++)
900
602052
                    for(k = 0; k < 2; k++)
901
1204104
                        for(l = 0; l < 2; l++)
902
802736
                            s->current_picture_ptr->motion_val[l][mv_pos + i + j*s->b8_stride][k] = calc_add_mv(r, l, s->next_picture_ptr->motion_val[0][mv_pos + i + j*s->b8_stride][k]);
903

156962
        if(!(IS_16X8(next_bt) || IS_8X16(next_bt) || IS_8X8(next_bt))) //we can use whole macroblock MC
904
145669
            rv34_mc_2mv(r, block_type);
905
        else
906
11293
            rv34_mc_2mv_skip(r);
907
156962
        ZERO8x2(s->current_picture_ptr->motion_val[0][s->mb_x * 2 + s->mb_y * 2 * s->b8_stride], s->b8_stride);
908
156962
        break;
909
16878
    case RV34_MB_P_16x16:
910
    case RV34_MB_P_MIX16x16:
911
16878
        rv34_pred_mv(r, block_type, 0, 0);
912
16878
        rv34_mc_1mv (r, block_type, 0, 0, 0, 2, 2, 0);
913
16878
        break;
914
37610
    case RV34_MB_B_FORWARD:
915
    case RV34_MB_B_BACKWARD:
916
37610
        r->dmv[1][0] = r->dmv[0][0];
917
37610
        r->dmv[1][1] = r->dmv[0][1];
918
37610
        if(r->rv30)
919
9134
            rv34_pred_mv_rv3(r, block_type, block_type == RV34_MB_B_BACKWARD);
920
        else
921
28476
            rv34_pred_mv_b  (r, block_type, block_type == RV34_MB_B_BACKWARD);
922
37610
        rv34_mc_1mv     (r, block_type, 0, 0, 0, 2, 2, block_type == RV34_MB_B_BACKWARD);
923
37610
        break;
924
3819
    case RV34_MB_P_16x8:
925
    case RV34_MB_P_8x16:
926
3819
        rv34_pred_mv(r, block_type, 0, 0);
927
3819
        rv34_pred_mv(r, block_type, 1 + (block_type == RV34_MB_P_16x8), 1);
928
3819
        if(block_type == RV34_MB_P_16x8){
929
1346
            rv34_mc_1mv(r, block_type, 0, 0, 0,            2, 1, 0);
930
1346
            rv34_mc_1mv(r, block_type, 0, 8, s->b8_stride, 2, 1, 0);
931
        }
932
3819
        if(block_type == RV34_MB_P_8x16){
933
2473
            rv34_mc_1mv(r, block_type, 0, 0, 0, 1, 2, 0);
934
2473
            rv34_mc_1mv(r, block_type, 8, 0, 1, 1, 2, 0);
935
        }
936
3819
        break;
937
9263
    case RV34_MB_B_BIDIR:
938
9263
        rv34_pred_mv_b  (r, block_type, 0);
939
9263
        rv34_pred_mv_b  (r, block_type, 1);
940
9263
        rv34_mc_2mv     (r, block_type);
941
9263
        break;
942
4526
    case RV34_MB_P_8x8:
943
22630
        for(i=0;i< 4;i++){
944
18104
            rv34_pred_mv(r, block_type, i, i);
945
18104
            rv34_mc_1mv (r, block_type, (i&1)<<3, (i&2)<<2, (i&1)+(i>>1)*s->b8_stride, 1, 1, 0);
946
        }
947
4526
        break;
948
    }
949
950
260363
    return 0;
951
}
952
/** @} */ // mv group
953
954
/**
955
 * @name Macroblock reconstruction functions
956
 * @{
957
 */
958
/** mapping of RV30/40 intra prediction types to standard H.264 types */
959
static const int ittrans[9] = {
960
 DC_PRED, VERT_PRED, HOR_PRED, DIAG_DOWN_RIGHT_PRED, DIAG_DOWN_LEFT_PRED,
961
 VERT_RIGHT_PRED, VERT_LEFT_PRED, HOR_UP_PRED, HOR_DOWN_PRED,
962
};
963
964
/** mapping of RV30/40 intra 16x16 prediction types to standard H.264 types */
965
static const int ittrans16[4] = {
966
 DC_PRED8x8, VERT_PRED8x8, HOR_PRED8x8, PLANE_PRED8x8,
967
};
968
969
/**
970
 * Perform 4x4 intra prediction.
971
 */
972
362664
static void rv34_pred_4x4_block(RV34DecContext *r, uint8_t *dst, int stride, int itype, int up, int left, int down, int right)
973
{
974
362664
    uint8_t *prev = dst - stride + 4;
975
    uint32_t topleft;
976
977

362664
    if(!up && !left)
978
906
        itype = DC_128_PRED;
979
361758
    else if(!up){
980
43702
        if(itype == VERT_PRED) itype = HOR_PRED;
981
43702
        if(itype == DC_PRED)   itype = LEFT_DC_PRED;
982
318056
    }else if(!left){
983
5318
        if(itype == HOR_PRED)  itype = VERT_PRED;
984
5318
        if(itype == DC_PRED)   itype = TOP_DC_PRED;
985
5318
        if(itype == DIAG_DOWN_LEFT_PRED) itype = DIAG_DOWN_LEFT_PRED_RV40_NODOWN;
986
    }
987
362664
    if(!down){
988
289443
        if(itype == DIAG_DOWN_LEFT_PRED) itype = DIAG_DOWN_LEFT_PRED_RV40_NODOWN;
989
289443
        if(itype == HOR_UP_PRED) itype = HOR_UP_PRED_RV40_NODOWN;
990
289443
        if(itype == VERT_LEFT_PRED) itype = VERT_LEFT_PRED_RV40_NODOWN;
991
    }
992

362664
    if(!right && up){
993
76047
        topleft = dst[-stride + 3] * 0x01010101u;
994
76047
        prev = (uint8_t*)&topleft;
995
    }
996
362664
    r->h.pred4x4[itype](dst, prev, stride);
997
362664
}
998
999
33612
static inline int adjust_pred16(int itype, int up, int left)
1000
{
1001

33612
    if(!up && !left)
1002
54
        itype = DC_128_PRED8x8;
1003
33558
    else if(!up){
1004
5754
        if(itype == PLANE_PRED8x8)itype = HOR_PRED8x8;
1005
5754
        if(itype == VERT_PRED8x8) itype = HOR_PRED8x8;
1006
5754
        if(itype == DC_PRED8x8)   itype = LEFT_DC_PRED8x8;
1007
27804
    }else if(!left){
1008
836
        if(itype == PLANE_PRED8x8)itype = VERT_PRED8x8;
1009
836
        if(itype == HOR_PRED8x8)  itype = VERT_PRED8x8;
1010
836
        if(itype == DC_PRED8x8)   itype = TOP_DC_PRED8x8;
1011
    }
1012
33612
    return itype;
1013
}
1014
1015
704977
static inline void rv34_process_block(RV34DecContext *r,
1016
                                      uint8_t *pdst, int stride,
1017
                                      int fc, int sc, int q_dc, int q_ac)
1018
{
1019
704977
    MpegEncContext *s = &r->s;
1020
704977
    int16_t *ptr = s->block[0];
1021
704977
    int has_ac = rv34_decode_block(ptr, &s->gb, r->cur_vlcs,
1022
                                   fc, sc, q_dc, q_ac, q_ac);
1023
704977
    if(has_ac){
1024
350745
        r->rdsp.rv34_idct_add(pdst, stride, ptr);
1025
    }else{
1026
354232
        r->rdsp.rv34_idct_dc_add(pdst, stride, ptr[0]);
1027
354232
        ptr[0] = 0;
1028
    }
1029
704977
}
1030
1031
16806
static void rv34_output_i16x16(RV34DecContext *r, int8_t *intra_types, int cbp)
1032
{
1033
16806
    LOCAL_ALIGNED_16(int16_t, block16, [16]);
1034
16806
    MpegEncContext *s    = &r->s;
1035
16806
    GetBitContext  *gb   = &s->gb;
1036
16806
    int             q_dc = rv34_qscale_tab[ r->luma_dc_quant_i[s->qscale] ],
1037
16806
                    q_ac = rv34_qscale_tab[s->qscale];
1038
16806
    uint8_t        *dst  = s->dest[0];
1039
16806
    int16_t        *ptr  = s->block[0];
1040
    int i, j, itype, has_ac;
1041
1042
16806
    memset(block16, 0, 16 * sizeof(*block16));
1043
1044
16806
    has_ac = rv34_decode_block(block16, gb, r->cur_vlcs, 3, 0, q_dc, q_dc, q_ac);
1045
16806
    if(has_ac)
1046
7912
        r->rdsp.rv34_inv_transform(block16);
1047
    else
1048
8894
        r->rdsp.rv34_inv_transform_dc(block16);
1049
1050
16806
    itype = ittrans16[intra_types[0]];
1051
16806
    itype = adjust_pred16(itype, r->avail_cache[6-4], r->avail_cache[6-1]);
1052
16806
    r->h.pred16x16[itype](dst, s->linesize);
1053
1054
84030
    for(j = 0; j < 4; j++){
1055
336120
        for(i = 0; i < 4; i++, cbp >>= 1){
1056
268896
            int dc = block16[i + j*4];
1057
1058
268896
            if(cbp & 1){
1059
14262
                has_ac = rv34_decode_block(ptr, gb, r->cur_vlcs, r->luma_vlc, 0, q_ac, q_ac, q_ac);
1060
            }else
1061
254634
                has_ac = 0;
1062
1063
268896
            if(has_ac){
1064
14262
                ptr[0] = dc;
1065
14262
                r->rdsp.rv34_idct_add(dst+4*i, s->linesize, ptr);
1066
            }else
1067
254634
                r->rdsp.rv34_idct_dc_add(dst+4*i, s->linesize, dc);
1068
        }
1069
1070
67224
        dst += 4*s->linesize;
1071
    }
1072
1073
16806
    itype = ittrans16[intra_types[0]];
1074
16806
    if(itype == PLANE_PRED8x8) itype = DC_PRED8x8;
1075
16806
    itype = adjust_pred16(itype, r->avail_cache[6-4], r->avail_cache[6-1]);
1076
1077
16806
    q_dc = rv34_qscale_tab[rv34_chroma_quant[1][s->qscale]];
1078
16806
    q_ac = rv34_qscale_tab[rv34_chroma_quant[0][s->qscale]];
1079
1080
50418
    for(j = 1; j < 3; j++){
1081
33612
        dst = s->dest[j];
1082
33612
        r->h.pred8x8[itype](dst, s->uvlinesize);
1083
168060
        for(i = 0; i < 4; i++, cbp >>= 1){
1084
            uint8_t *pdst;
1085
134448
            if(!(cbp & 1)) continue;
1086
24665
            pdst   = dst + (i&1)*4 + (i&2)*2*s->uvlinesize;
1087
1088
24665
            rv34_process_block(r, pdst, s->uvlinesize,
1089
                               r->chroma_vlc, 1, q_dc, q_ac);
1090
        }
1091
    }
1092
16806
}
1093
1094
15111
static void rv34_output_intra(RV34DecContext *r, int8_t *intra_types, int cbp)
1095
{
1096
15111
    MpegEncContext *s   = &r->s;
1097
15111
    uint8_t        *dst = s->dest[0];
1098
15111
    int      avail[6*8] = {0};
1099
    int i, j, k;
1100
    int idx, q_ac, q_dc;
1101
1102
    // Set neighbour information.
1103
15111
    if(r->avail_cache[1])
1104
8914
        avail[0] = 1;
1105
15111
    if(r->avail_cache[2])
1106
9535
        avail[1] = avail[2] = 1;
1107
15111
    if(r->avail_cache[3])
1108
9535
        avail[3] = avail[4] = 1;
1109
15111
    if(r->avail_cache[4])
1110
9499
        avail[5] = 1;
1111
15111
    if(r->avail_cache[5])
1112
14333
        avail[8] = avail[16] = 1;
1113
15111
    if(r->avail_cache[9])
1114
14333
        avail[24] = avail[32] = 1;
1115
1116
15111
    q_ac = rv34_qscale_tab[s->qscale];
1117
75555
    for(j = 0; j < 4; j++){
1118
60444
        idx = 9 + j*8;
1119
302220
        for(i = 0; i < 4; i++, cbp >>= 1, dst += 4, idx++){
1120
241776
            rv34_pred_4x4_block(r, dst, s->linesize, ittrans[intra_types[i]], avail[idx-8], avail[idx-1], avail[idx+7], avail[idx-7]);
1121
241776
            avail[idx] = 1;
1122
241776
            if(!(cbp & 1)) continue;
1123
1124
148411
            rv34_process_block(r, dst, s->linesize,
1125
                               r->luma_vlc, 0, q_ac, q_ac);
1126
        }
1127
60444
        dst += s->linesize * 4 - 4*4;
1128
60444
        intra_types += r->intra_types_stride;
1129
    }
1130
1131
15111
    intra_types -= r->intra_types_stride * 4;
1132
1133
15111
    q_dc = rv34_qscale_tab[rv34_chroma_quant[1][s->qscale]];
1134
15111
    q_ac = rv34_qscale_tab[rv34_chroma_quant[0][s->qscale]];
1135
1136
45333
    for(k = 0; k < 2; k++){
1137
30222
        dst = s->dest[1+k];
1138
30222
        fill_rectangle(r->avail_cache + 6, 2, 2, 4, 0, 4);
1139
1140
90666
        for(j = 0; j < 2; j++){
1141
60444
            int* acache = r->avail_cache + 6 + j*4;
1142
181332
            for(i = 0; i < 2; i++, cbp >>= 1, acache++){
1143
120888
                int itype = ittrans[intra_types[i*2+j*2*r->intra_types_stride]];
1144

120888
                rv34_pred_4x4_block(r, dst+4*i, s->uvlinesize, itype, acache[-4], acache[-1], !i && !j, acache[-3]);
1145
120888
                acache[0] = 1;
1146
1147
120888
                if(!(cbp&1)) continue;
1148
1149
71067
                rv34_process_block(r, dst + 4*i, s->uvlinesize,
1150
                                   r->chroma_vlc, 1, q_dc, q_ac);
1151
            }
1152
1153
60444
            dst += 4*s->uvlinesize;
1154
        }
1155
    }
1156
15111
}
1157
1158
2246368
static int is_mv_diff_gt_3(int16_t (*motion_val)[2], int step)
1159
{
1160
    int d;
1161
2246368
    d = motion_val[0][0] - motion_val[-step][0];
1162

2246368
    if(d < -3 || d > 3)
1163
188252
        return 1;
1164
2058116
    d = motion_val[0][1] - motion_val[-step][1];
1165

2058116
    if(d < -3 || d > 3)
1166
31852
        return 1;
1167
2026264
    return 0;
1168
}
1169
1170
284640
static int rv34_set_deblock_coef(RV34DecContext *r)
1171
{
1172
284640
    MpegEncContext *s = &r->s;
1173
284640
    int hmvmask = 0, vmvmask = 0, i, j;
1174
284640
    int midx = s->mb_x * 2 + s->mb_y * 2 * s->b8_stride;
1175
284640
    int16_t (*motion_val)[2] = &s->current_picture_ptr->motion_val[0][midx];
1176
853920
    for(j = 0; j < 16; j += 8){
1177
1707840
        for(i = 0; i < 2; i++){
1178
1138560
            if(is_mv_diff_gt_3(motion_val + i, 1))
1179
106472
                vmvmask |= 0x11 << (j + i*2);
1180

1138560
            if((j || s->mb_y) && is_mv_diff_gt_3(motion_val + i, s->b8_stride))
1181
113632
                hmvmask |= 0x03 << (j + i*2);
1182
        }
1183
569280
        motion_val += s->b8_stride;
1184
    }
1185
284640
    if(s->first_slice_line)
1186
42347
        hmvmask &= ~0x000F;
1187
284640
    if(!s->mb_x)
1188
9120
        vmvmask &= ~0x1111;
1189
284640
    if(r->rv30){ //RV30 marks both subblocks on the edge for filtering
1190
68640
        vmvmask |= (vmvmask & 0x4444) >> 1;
1191
68640
        hmvmask |= (hmvmask & 0x0F00) >> 4;
1192
68640
        if(s->mb_x)
1193
65520
            r->deblock_coefs[s->mb_x - 1 + s->mb_y*s->mb_stride] |= (vmvmask & 0x1111) << 3;
1194
68640
        if(!s->first_slice_line)
1195
61878
            r->deblock_coefs[s->mb_x + (s->mb_y - 1)*s->mb_stride] |= (hmvmask & 0xF) << 12;
1196
    }
1197
284640
    return hmvmask | vmvmask;
1198
}
1199
1200
284640
static int rv34_decode_inter_macroblock(RV34DecContext *r, int8_t *intra_types)
1201
{
1202
284640
    MpegEncContext *s   = &r->s;
1203
284640
    GetBitContext  *gb  = &s->gb;
1204
284640
    uint8_t        *dst = s->dest[0];
1205
284640
    int16_t        *ptr = s->block[0];
1206
284640
    int          mb_pos = s->mb_x + s->mb_y * s->mb_stride;
1207
    int cbp, cbp2;
1208
    int q_dc, q_ac, has_ac;
1209
    int i, j;
1210
    int dist;
1211
1212
    // Calculate which neighbours are available. Maybe it's worth optimizing too.
1213
284640
    memset(r->avail_cache, 0, sizeof(r->avail_cache));
1214
284640
    fill_rectangle(r->avail_cache + 6, 2, 2, 4, 1, 4);
1215
284640
    dist = (s->mb_x - s->resync_mb_x) + (s->mb_y - s->resync_mb_y) * s->mb_width;
1216

284640
    if(s->mb_x && dist)
1217
275017
        r->avail_cache[5] =
1218
275017
        r->avail_cache[9] = s->current_picture_ptr->mb_type[mb_pos - 1];
1219
284640
    if(dist >= s->mb_width)
1220
242293
        r->avail_cache[2] =
1221
242293
        r->avail_cache[3] = s->current_picture_ptr->mb_type[mb_pos - s->mb_stride];
1222

284640
    if(((s->mb_x+1) < s->mb_width) && dist >= s->mb_width - 1)
1223
234929
        r->avail_cache[4] = s->current_picture_ptr->mb_type[mb_pos - s->mb_stride + 1];
1224

284640
    if(s->mb_x && dist > s->mb_width)
1225
234004
        r->avail_cache[1] = s->current_picture_ptr->mb_type[mb_pos - s->mb_stride - 1];
1226
1227
284640
    s->qscale = r->si.quant;
1228
284640
    cbp = cbp2 = rv34_decode_inter_mb_header(r, intra_types);
1229
284640
    r->cbp_luma  [mb_pos] = cbp;
1230
284640
    r->cbp_chroma[mb_pos] = cbp >> 16;
1231
284640
    r->deblock_coefs[mb_pos] = rv34_set_deblock_coef(r) | r->cbp_luma[mb_pos];
1232
284640
    s->current_picture_ptr->qscale_table[mb_pos] = s->qscale;
1233
1234
284640
    if(cbp == -1)
1235
        return -1;
1236
1237
284640
    if (IS_INTRA(s->current_picture_ptr->mb_type[mb_pos])){
1238
24277
        if(r->is16) rv34_output_i16x16(r, intra_types, cbp);
1239
13301
        else        rv34_output_intra(r, intra_types, cbp);
1240
24277
        return 0;
1241
    }
1242
1243
260363
    if(r->is16){
1244
        // Only for RV34_MB_P_MIX16x16
1245
547
        LOCAL_ALIGNED_16(int16_t, block16, [16]);
1246
547
        memset(block16, 0, 16 * sizeof(*block16));
1247
547
        q_dc = rv34_qscale_tab[ r->luma_dc_quant_p[s->qscale] ];
1248
547
        q_ac = rv34_qscale_tab[s->qscale];
1249
547
        if (rv34_decode_block(block16, gb, r->cur_vlcs, 3, 0, q_dc, q_dc, q_ac))
1250
266
            r->rdsp.rv34_inv_transform(block16);
1251
        else
1252
281
            r->rdsp.rv34_inv_transform_dc(block16);
1253
1254
547
        q_ac = rv34_qscale_tab[s->qscale];
1255
1256
2735
        for(j = 0; j < 4; j++){
1257
10940
            for(i = 0; i < 4; i++, cbp >>= 1){
1258
8752
                int      dc   = block16[i + j*4];
1259
1260
8752
                if(cbp & 1){
1261
6
                    has_ac = rv34_decode_block(ptr, gb, r->cur_vlcs, r->luma_vlc, 0, q_ac, q_ac, q_ac);
1262
                }else
1263
8746
                    has_ac = 0;
1264
1265
8752
                if(has_ac){
1266
6
                    ptr[0] = dc;
1267
6
                    r->rdsp.rv34_idct_add(dst+4*i, s->linesize, ptr);
1268
                }else
1269
8746
                    r->rdsp.rv34_idct_dc_add(dst+4*i, s->linesize, dc);
1270
            }
1271
1272
2188
            dst += 4*s->linesize;
1273
        }
1274
1275
547
        r->cur_vlcs = choose_vlc_set(r->si.quant, r->si.vlc_set, 1);
1276
    }else{
1277
259816
        q_ac = rv34_qscale_tab[s->qscale];
1278
1279
1299080
        for(j = 0; j < 4; j++){
1280
5196320
            for(i = 0; i < 4; i++, cbp >>= 1){
1281
4157056
                if(!(cbp & 1)) continue;
1282
1283
317078
                rv34_process_block(r, dst + 4*i, s->linesize,
1284
                                   r->luma_vlc, 0, q_ac, q_ac);
1285
            }
1286
1039264
            dst += 4*s->linesize;
1287
        }
1288
    }
1289
1290
260363
    q_dc = rv34_qscale_tab[rv34_chroma_quant[1][s->qscale]];
1291
260363
    q_ac = rv34_qscale_tab[rv34_chroma_quant[0][s->qscale]];
1292
1293
781089
    for(j = 1; j < 3; j++){
1294
520726
        dst = s->dest[j];
1295
2603630
        for(i = 0; i < 4; i++, cbp >>= 1){
1296
            uint8_t *pdst;
1297
2082904
            if(!(cbp & 1)) continue;
1298
143756
            pdst = dst + (i&1)*4 + (i&2)*2*s->uvlinesize;
1299
1300
143756
            rv34_process_block(r, pdst, s->uvlinesize,
1301
                               r->chroma_vlc, 1, q_dc, q_ac);
1302
        }
1303
    }
1304
1305
260363
    return 0;
1306
}
1307
1308
7640
static int rv34_decode_intra_macroblock(RV34DecContext *r, int8_t *intra_types)
1309
{
1310
7640
    MpegEncContext *s = &r->s;
1311
    int cbp, dist;
1312
7640
    int mb_pos = s->mb_x + s->mb_y * s->mb_stride;
1313
1314
    // Calculate which neighbours are available. Maybe it's worth optimizing too.
1315
7640
    memset(r->avail_cache, 0, sizeof(r->avail_cache));
1316
7640
    fill_rectangle(r->avail_cache + 6, 2, 2, 4, 1, 4);
1317
7640
    dist = (s->mb_x - s->resync_mb_x) + (s->mb_y - s->resync_mb_y) * s->mb_width;
1318

7640
    if(s->mb_x && dist)
1319
7325
        r->avail_cache[5] =
1320
7325
        r->avail_cache[9] = s->current_picture_ptr->mb_type[mb_pos - 1];
1321
7640
    if(dist >= s->mb_width)
1322
6133
        r->avail_cache[2] =
1323
6133
        r->avail_cache[3] = s->current_picture_ptr->mb_type[mb_pos - s->mb_stride];
1324

7640
    if(((s->mb_x+1) < s->mb_width) && dist >= s->mb_width - 1)
1325
5928
        r->avail_cache[4] = s->current_picture_ptr->mb_type[mb_pos - s->mb_stride + 1];
1326

7640
    if(s->mb_x && dist > s->mb_width)
1327
5878
        r->avail_cache[1] = s->current_picture_ptr->mb_type[mb_pos - s->mb_stride - 1];
1328
1329
7640
    s->qscale = r->si.quant;
1330
7640
    cbp = rv34_decode_intra_mb_header(r, intra_types);
1331
7640
    r->cbp_luma  [mb_pos] = cbp;
1332
7640
    r->cbp_chroma[mb_pos] = cbp >> 16;
1333
7640
    r->deblock_coefs[mb_pos] = 0xFFFF;
1334
7640
    s->current_picture_ptr->qscale_table[mb_pos] = s->qscale;
1335
1336
7640
    if(cbp == -1)
1337
        return -1;
1338
1339
7640
    if(r->is16){
1340
5830
        rv34_output_i16x16(r, intra_types, cbp);
1341
5830
        return 0;
1342
    }
1343
1344
1810
    rv34_output_intra(r, intra_types, cbp);
1345
1810
    return 0;
1346
}
1347
1348
293665
static int check_slice_end(RV34DecContext *r, MpegEncContext *s)
1349
{
1350
    int bits;
1351
293665
    if(s->mb_y >= s->mb_height)
1352
526
        return 1;
1353
293139
    if(!s->mb_num_left)
1354
859
        return 1;
1355
292280
    if(r->s.mb_skip_run > 1)
1356
128319
        return 0;
1357
163961
    bits = get_bits_left(&s->gb);
1358

163961
    if(bits <= 0 || (bits < 8 && !show_bits(&s->gb, bits)))
1359
        return 1;
1360
163961
    return 0;
1361
}
1362
1363
1364
9
static void rv34_decoder_free(RV34DecContext *r)
1365
{
1366
9
    av_freep(&r->intra_types_hist);
1367
9
    r->intra_types = NULL;
1368
9
    av_freep(&r->tmp_b_block_base);
1369
9
    av_freep(&r->mb_type);
1370
9
    av_freep(&r->cbp_luma);
1371
9
    av_freep(&r->cbp_chroma);
1372
9
    av_freep(&r->deblock_coefs);
1373
9
}
1374
1375
1376
9
static int rv34_decoder_alloc(RV34DecContext *r)
1377
{
1378
9
    r->intra_types_stride = r->s.mb_width * 4 + 4;
1379
1380
9
    r->cbp_chroma       = av_mallocz(r->s.mb_stride * r->s.mb_height *
1381
                                    sizeof(*r->cbp_chroma));
1382
9
    r->cbp_luma         = av_mallocz(r->s.mb_stride * r->s.mb_height *
1383
                                    sizeof(*r->cbp_luma));
1384
9
    r->deblock_coefs    = av_mallocz(r->s.mb_stride * r->s.mb_height *
1385
                                    sizeof(*r->deblock_coefs));
1386
9
    r->intra_types_hist = av_malloc(r->intra_types_stride * 4 * 2 *
1387
                                    sizeof(*r->intra_types_hist));
1388
9
    r->mb_type          = av_mallocz(r->s.mb_stride * r->s.mb_height *
1389
                                     sizeof(*r->mb_type));
1390
1391

9
    if (!(r->cbp_chroma       && r->cbp_luma && r->deblock_coefs &&
1392

9
          r->intra_types_hist && r->mb_type)) {
1393
        rv34_decoder_free(r);
1394
        return AVERROR(ENOMEM);
1395
    }
1396
1397
9
    r->intra_types = r->intra_types_hist + r->intra_types_stride * 4;
1398
1399
9
    return 0;
1400
}
1401
1402
1403
static int rv34_decoder_realloc(RV34DecContext *r)
1404
{
1405
    rv34_decoder_free(r);
1406
    return rv34_decoder_alloc(r);
1407
}
1408
1409
1410
1385
static int rv34_decode_slice(RV34DecContext *r, int end, const uint8_t* buf, int buf_size)
1411
{
1412
1385
    MpegEncContext *s = &r->s;
1413
1385
    GetBitContext *gb = &s->gb;
1414
    int mb_pos, slice_type;
1415
    int res;
1416
1417
1385
    init_get_bits(&r->s.gb, buf, buf_size*8);
1418
1385
    res = r->parse_slice_header(r, gb, &r->si);
1419
1385
    if(res < 0){
1420
        av_log(s->avctx, AV_LOG_ERROR, "Incorrect or unknown slice header\n");
1421
        return -1;
1422
    }
1423
1424
1385
    slice_type = r->si.type ? r->si.type : AV_PICTURE_TYPE_I;
1425
1385
    if (slice_type != s->pict_type) {
1426
        av_log(s->avctx, AV_LOG_ERROR, "Slice type mismatch\n");
1427
        return AVERROR_INVALIDDATA;
1428
    }
1429

1385
    if (s->width != r->si.width || s->height != r->si.height) {
1430
        av_log(s->avctx, AV_LOG_ERROR, "Size mismatch\n");
1431
        return AVERROR_INVALIDDATA;
1432
    }
1433
1434
1385
    r->si.end = end;
1435
1385
    s->qscale = r->si.quant;
1436
1385
    s->mb_num_left = r->si.end - r->si.start;
1437
1385
    r->s.mb_skip_run = 0;
1438
1439
1385
    mb_pos = s->mb_x + s->mb_y * s->mb_width;
1440
1385
    if(r->si.start != mb_pos){
1441
        av_log(s->avctx, AV_LOG_ERROR, "Slice indicates MB offset %d, got %d\n", r->si.start, mb_pos);
1442
        s->mb_x = r->si.start % s->mb_width;
1443
        s->mb_y = r->si.start / s->mb_width;
1444
    }
1445
1385
    memset(r->intra_types_hist, -1, r->intra_types_stride * 4 * 2 * sizeof(*r->intra_types_hist));
1446
1385
    s->first_slice_line = 1;
1447
1385
    s->resync_mb_x = s->mb_x;
1448
1385
    s->resync_mb_y = s->mb_y;
1449
1450
1385
    ff_init_block_index(s);
1451
293665
    while(!check_slice_end(r, s)) {
1452
292280
        ff_update_block_index(s);
1453
1454
292280
        if(r->si.type)
1455
284640
            res = rv34_decode_inter_macroblock(r, r->intra_types + s->mb_x * 4 + 4);
1456
        else
1457
7640
            res = rv34_decode_intra_macroblock(r, r->intra_types + s->mb_x * 4 + 4);
1458
292280
        if(res < 0){
1459
            ff_er_add_slice(&s->er, s->resync_mb_x, s->resync_mb_y, s->mb_x-1, s->mb_y, ER_MB_ERROR);
1460
            return -1;
1461
        }
1462
292280
        if (++s->mb_x == s->mb_width) {
1463
9408
            s->mb_x = 0;
1464
9408
            s->mb_y++;
1465
9408
            ff_init_block_index(s);
1466
1467
9408
            memmove(r->intra_types_hist, r->intra_types, r->intra_types_stride * 4 * sizeof(*r->intra_types_hist));
1468
9408
            memset(r->intra_types, -1, r->intra_types_stride * 4 * sizeof(*r->intra_types_hist));
1469
1470

9408
            if(r->loop_filter && s->mb_y >= 2)
1471
8882
                r->loop_filter(r, s->mb_y - 2);
1472
1473
9408
            if (HAVE_THREADS && (s->avctx->active_thread_type & FF_THREAD_FRAME))
1474
                ff_thread_report_progress(&s->current_picture_ptr->tf,
1475
                                          s->mb_y - 2, 0);
1476
1477
        }
1478
292280
        if(s->mb_x == s->resync_mb_x)
1479
9031
            s->first_slice_line=0;
1480
292280
        s->mb_num_left--;
1481
    }
1482
1385
    ff_er_add_slice(&s->er, s->resync_mb_x, s->resync_mb_y, s->mb_x-1, s->mb_y, ER_MB_END);
1483
1484
1385
    return s->mb_y == s->mb_height;
1485
}
1486
1487
/** @} */ // reconstruction group end
1488
1489
/**
1490
 * Initialize decoder.
1491
 */
1492
9
av_cold int ff_rv34_decode_init(AVCodecContext *avctx)
1493
{
1494
9
    RV34DecContext *r = avctx->priv_data;
1495
9
    MpegEncContext *s = &r->s;
1496
    int ret;
1497
1498
9
    ff_mpv_decode_defaults(s);
1499
9
    ff_mpv_decode_init(s, avctx);
1500
9
    s->out_format = FMT_H263;
1501
1502
9
    avctx->pix_fmt = AV_PIX_FMT_YUV420P;
1503
9
    avctx->has_b_frames = 1;
1504
9
    s->low_delay = 0;
1505
1506
9
    ff_mpv_idct_init(s);
1507
9
    if ((ret = ff_mpv_common_init(s)) < 0)
1508
        return ret;
1509
1510
9
    ff_h264_pred_init(&r->h, AV_CODEC_ID_RV40, 8, 1);
1511
1512
#if CONFIG_RV30_DECODER
1513
9
    if (avctx->codec_id == AV_CODEC_ID_RV30)
1514
5
        ff_rv30dsp_init(&r->rdsp);
1515
#endif
1516
#if CONFIG_RV40_DECODER
1517
9
    if (avctx->codec_id == AV_CODEC_ID_RV40)
1518
4
        ff_rv40dsp_init(&r->rdsp);
1519
#endif
1520
1521
9
    if ((ret = rv34_decoder_alloc(r)) < 0) {
1522
        ff_mpv_common_end(&r->s);
1523
        return ret;
1524
    }
1525
1526
9
    if(!intra_vlcs[0].cbppattern[0].bits)
1527
5
        rv34_init_tables();
1528
1529
9
    return 0;
1530
}
1531
1532
int ff_rv34_decode_update_thread_context(AVCodecContext *dst, const AVCodecContext *src)
1533
{
1534
    RV34DecContext *r = dst->priv_data, *r1 = src->priv_data;
1535
    MpegEncContext * const s = &r->s, * const s1 = &r1->s;
1536
    int err;
1537
1538
    if (dst == src || !s1->context_initialized)
1539
        return 0;
1540
1541
    if (s->height != s1->height || s->width != s1->width) {
1542
        s->height = s1->height;
1543
        s->width  = s1->width;
1544
        if ((err = ff_mpv_common_frame_size_change(s)) < 0)
1545
            return err;
1546
        if ((err = rv34_decoder_realloc(r)) < 0)
1547
            return err;
1548
    }
1549
1550
    r->cur_pts  = r1->cur_pts;
1551
    r->last_pts = r1->last_pts;
1552
    r->next_pts = r1->next_pts;
1553
1554
    memset(&r->si, 0, sizeof(r->si));
1555
1556
    // Do no call ff_mpeg_update_thread_context on a partially initialized
1557
    // decoder context.
1558
    if (!s1->context_initialized)
1559
        return 0;
1560
1561
    return ff_mpeg_update_thread_context(dst, src);
1562
}
1563
1564
4156
static int get_slice_offset(AVCodecContext *avctx, const uint8_t *buf, int n, int slice_count, int buf_size)
1565
{
1566
4156
    if (n < slice_count) {
1567
3273
        if(avctx->slice_count) return avctx->slice_offset[n];
1568
3273
        else                   return AV_RL32(buf + n*8 - 4) == 1 ? AV_RL32(buf + n*8) :  AV_RB32(buf + n*8);
1569
    } else
1570
883
        return buf_size;
1571
}
1572
1573
526
static int finish_frame(AVCodecContext *avctx, AVFrame *pict)
1574
{
1575
526
    RV34DecContext *r = avctx->priv_data;
1576
526
    MpegEncContext *s = &r->s;
1577
526
    int got_picture = 0, ret;
1578
1579
526
    ff_er_frame_end(&s->er);
1580
526
    ff_mpv_frame_end(s);
1581
526
    s->mb_num_left = 0;
1582
1583
526
    if (HAVE_THREADS && (s->avctx->active_thread_type & FF_THREAD_FRAME))
1584
        ff_thread_report_progress(&s->current_picture_ptr->tf, INT_MAX, 0);
1585
1586

526
    if (s->pict_type == AV_PICTURE_TYPE_B || s->low_delay) {
1587
387
        if ((ret = av_frame_ref(pict, s->current_picture_ptr->f)) < 0)
1588
            return ret;
1589
387
        ff_print_debug_info(s, s->current_picture_ptr, pict);
1590
387
        ff_mpv_export_qp_table(s, pict, s->current_picture_ptr, FF_QSCALE_TYPE_MPEG1);
1591
387
        got_picture = 1;
1592
139
    } else if (s->last_picture_ptr) {
1593
130
        if ((ret = av_frame_ref(pict, s->last_picture_ptr->f)) < 0)
1594
            return ret;
1595
130
        ff_print_debug_info(s, s->last_picture_ptr, pict);
1596
130
        ff_mpv_export_qp_table(s, pict, s->last_picture_ptr, FF_QSCALE_TYPE_MPEG1);
1597
130
        got_picture = 1;
1598
    }
1599
1600
526
    return got_picture;
1601
}
1602
1603
static AVRational update_sar(int old_w, int old_h, AVRational sar, int new_w, int new_h)
1604
{
1605
    // attempt to keep aspect during typical resolution switches
1606
    if (!sar.num)
1607
        sar = (AVRational){1, 1};
1608
1609
    sar = av_mul_q(sar, av_mul_q((AVRational){new_h, new_w}, (AVRational){old_w, old_h}));
1610
    return sar;
1611
}
1612
1613
532
int ff_rv34_decode_frame(AVCodecContext *avctx,
1614
                            void *data, int *got_picture_ptr,
1615
                            AVPacket *avpkt)
1616
{
1617
532
    const uint8_t *buf = avpkt->data;
1618
532
    int buf_size = avpkt->size;
1619
532
    RV34DecContext *r = avctx->priv_data;
1620
532
    MpegEncContext *s = &r->s;
1621
532
    AVFrame *pict = data;
1622
    SliceInfo si;
1623
    int i, ret;
1624
    int slice_count;
1625
532
    const uint8_t *slices_hdr = NULL;
1626
532
    int last = 0;
1627
532
    int faulty_b = 0;
1628
    int offset;
1629
1630
    /* no supplementary picture */
1631
532
    if (buf_size == 0) {
1632
        /* special case for last picture */
1633

6
        if (s->low_delay==0 && s->next_picture_ptr) {
1634
4
            if ((ret = av_frame_ref(pict, s->next_picture_ptr->f)) < 0)
1635
                return ret;
1636
4
            s->next_picture_ptr = NULL;
1637
1638
4
            *got_picture_ptr = 1;
1639
        }
1640
6
        return 0;
1641
    }
1642
1643
526
    if(!avctx->slice_count){
1644
526
        slice_count = (*buf++) + 1;
1645
526
        slices_hdr = buf + 4;
1646
526
        buf += 8 * slice_count;
1647
526
        buf_size -= 1 + 8 * slice_count;
1648
    }else
1649
        slice_count = avctx->slice_count;
1650
1651
526
    offset = get_slice_offset(avctx, slices_hdr, 0, slice_count, buf_size);
1652
    //parse first slice header to check whether this frame can be decoded
1653

526
    if(offset < 0 || offset > buf_size){
1654
        av_log(avctx, AV_LOG_ERROR, "Slice offset is invalid\n");
1655
        return AVERROR_INVALIDDATA;
1656
    }
1657
526
    init_get_bits(&s->gb, buf+offset, (buf_size-offset)*8);
1658

526
    if(r->parse_slice_header(r, &r->s.gb, &si) < 0 || si.start){
1659
        av_log(avctx, AV_LOG_ERROR, "First slice header is incorrect\n");
1660
        return AVERROR_INVALIDDATA;
1661
    }
1662

526
    if ((!s->last_picture_ptr || !s->last_picture_ptr->f->data[0]) &&
1663
13
        si.type == AV_PICTURE_TYPE_B) {
1664
        av_log(avctx, AV_LOG_ERROR, "Invalid decoder state: B-frame without "
1665
               "reference data.\n");
1666
        faulty_b = 1;
1667
    }
1668

526
    if(   (avctx->skip_frame >= AVDISCARD_NONREF && si.type==AV_PICTURE_TYPE_B)
1669

526
       || (avctx->skip_frame >= AVDISCARD_NONKEY && si.type!=AV_PICTURE_TYPE_I)
1670
526
       ||  avctx->skip_frame >= AVDISCARD_ALL)
1671
        return avpkt->size;
1672
1673
    /* first slice */
1674
526
    if (si.start == 0) {
1675

526
        if (s->mb_num_left > 0 && s->current_picture_ptr) {
1676
            av_log(avctx, AV_LOG_ERROR, "New frame but still %d MB left.\n",
1677
                   s->mb_num_left);
1678
            ff_er_frame_end(&s->er);
1679
            ff_mpv_frame_end(s);
1680
        }
1681
1682

526
        if (s->width != si.width || s->height != si.height) {
1683
            int err;
1684
1685
            av_log(s->avctx, AV_LOG_WARNING, "Changing dimensions to %dx%d\n",
1686
                   si.width, si.height);
1687
1688
            if (av_image_check_size(si.width, si.height, 0, s->avctx))
1689
                return AVERROR_INVALIDDATA;
1690
1691
            s->avctx->sample_aspect_ratio = update_sar(
1692
                s->width, s->height, s->avctx->sample_aspect_ratio,
1693
                si.width, si.height);
1694
            s->width  = si.width;
1695
            s->height = si.height;
1696
1697
            err = ff_set_dimensions(s->avctx, s->width, s->height);
1698
            if (err < 0)
1699
                return err;
1700
1701
            if ((err = ff_mpv_common_frame_size_change(s)) < 0)
1702
                return err;
1703
            if ((err = rv34_decoder_realloc(r)) < 0)
1704
                return err;
1705
        }
1706
526
        if (faulty_b)
1707
            return AVERROR_INVALIDDATA;
1708
526
        s->pict_type = si.type ? si.type : AV_PICTURE_TYPE_I;
1709
526
        if (ff_mpv_frame_start(s, s->avctx) < 0)
1710
            return -1;
1711
526
        ff_mpeg_er_frame_start(s);
1712
526
        if (!r->tmp_b_block_base) {
1713
            int i;
1714
1715
9
            r->tmp_b_block_base = av_malloc(s->linesize * 48);
1716
27
            for (i = 0; i < 2; i++)
1717
18
                r->tmp_b_block_y[i] = r->tmp_b_block_base
1718
18
                                      + i * 16 * s->linesize;
1719
45
            for (i = 0; i < 4; i++)
1720
36
                r->tmp_b_block_uv[i] = r->tmp_b_block_base + 32 * s->linesize
1721
36
                                       + (i >> 1) * 8 * s->uvlinesize
1722
36
                                       + (i &  1) * 16;
1723
        }
1724
526
        r->cur_pts = si.pts;
1725
526
        if (s->pict_type != AV_PICTURE_TYPE_B) {
1726
139
            r->last_pts = r->next_pts;
1727
139
            r->next_pts = r->cur_pts;
1728
        } else {
1729
387
            int refdist = GET_PTS_DIFF(r->next_pts, r->last_pts);
1730
387
            int dist0   = GET_PTS_DIFF(r->cur_pts,  r->last_pts);
1731
387
            int dist1   = GET_PTS_DIFF(r->next_pts, r->cur_pts);
1732
1733
387
            if(!refdist){
1734
                r->mv_weight1 = r->mv_weight2 = r->weight1 = r->weight2 = 8192;
1735
                r->scaled_weight = 0;
1736
            }else{
1737
387
                if (FFMAX(dist0, dist1) > refdist)
1738
                    av_log(avctx, AV_LOG_TRACE, "distance overflow\n");
1739
1740
387
                r->mv_weight1 = (dist0 << 14) / refdist;
1741
387
                r->mv_weight2 = (dist1 << 14) / refdist;
1742
387
                if((r->mv_weight1|r->mv_weight2) & 511){
1743
349
                    r->weight1 = r->mv_weight1;
1744
349
                    r->weight2 = r->mv_weight2;
1745
349
                    r->scaled_weight = 0;
1746
                }else{
1747
38
                    r->weight1 = r->mv_weight1 >> 9;
1748
38
                    r->weight2 = r->mv_weight2 >> 9;
1749
38
                    r->scaled_weight = 1;
1750
                }
1751
            }
1752
        }
1753
526
        s->mb_x = s->mb_y = 0;
1754
526
        ff_thread_finish_setup(s->avctx);
1755
    } else if (HAVE_THREADS &&
1756
               (s->avctx->active_thread_type & FF_THREAD_FRAME)) {
1757
        av_log(s->avctx, AV_LOG_ERROR, "Decoder needs full frames in frame "
1758
               "multithreading mode (start MB is %d).\n", si.start);
1759
        return AVERROR_INVALIDDATA;
1760
    }
1761
1762
1385
    for(i = 0; i < slice_count; i++){
1763
1385
        int offset  = get_slice_offset(avctx, slices_hdr, i  , slice_count, buf_size);
1764
1385
        int offset1 = get_slice_offset(avctx, slices_hdr, i+1, slice_count, buf_size);
1765
        int size;
1766
1767

1385
        if(offset < 0 || offset > offset1 || offset1 > buf_size){
1768
            av_log(avctx, AV_LOG_ERROR, "Slice offset is invalid\n");
1769
            break;
1770
        }
1771
1385
        size = offset1 - offset;
1772
1773
1385
        r->si.end = s->mb_width * s->mb_height;
1774
1385
        s->mb_num_left = r->s.mb_x + r->s.mb_y*r->s.mb_width - r->si.start;
1775
1776
1385
        if(i+1 < slice_count){
1777
860
            int offset2 = get_slice_offset(avctx, slices_hdr, i+2, slice_count, buf_size);
1778

860
            if (offset2 < offset1 || offset2 > buf_size) {
1779
                av_log(avctx, AV_LOG_ERROR, "Slice offset is invalid\n");
1780
                break;
1781
            }
1782
860
            init_get_bits(&s->gb, buf+offset1, (buf_size-offset1)*8);
1783
860
            if(r->parse_slice_header(r, &r->s.gb, &si) < 0){
1784
1
                size = offset2 - offset;
1785
            }else
1786
859
                r->si.end = si.start;
1787
        }
1788

1385
        av_assert0 (size >= 0 && size <= buf_size - offset);
1789
1385
        last = rv34_decode_slice(r, r->si.end, buf + offset, size);
1790
1385
        if(last)
1791
526
            break;
1792
    }
1793
1794
526
    if (s->current_picture_ptr) {
1795
526
        if (last) {
1796
526
            if(r->loop_filter)
1797
526
                r->loop_filter(r, s->mb_height - 1);
1798
1799
526
            ret = finish_frame(avctx, pict);
1800
526
            if (ret < 0)
1801
                return ret;
1802
526
            *got_picture_ptr = ret;
1803
        } else if (HAVE_THREADS &&
1804
                   (s->avctx->active_thread_type & FF_THREAD_FRAME)) {
1805
            av_log(avctx, AV_LOG_INFO, "marking unfished frame as finished\n");
1806
            /* always mark the current frame as finished, frame-mt supports
1807
             * only complete frames */
1808
            ff_er_frame_end(&s->er);
1809
            ff_mpv_frame_end(s);
1810
            s->mb_num_left = 0;
1811
            ff_thread_report_progress(&s->current_picture_ptr->tf, INT_MAX, 0);
1812
            return AVERROR_INVALIDDATA;
1813
        }
1814
    }
1815
1816
526
    return avpkt->size;
1817
}
1818
1819
9
av_cold int ff_rv34_decode_end(AVCodecContext *avctx)
1820
{
1821
9
    RV34DecContext *r = avctx->priv_data;
1822
1823
9
    ff_mpv_common_end(&r->s);
1824
9
    rv34_decoder_free(r);
1825
1826
9
    return 0;
1827
}