GCC Code Coverage Report
Directory: ../../../ffmpeg/ Exec Total Coverage
File: src/libavcodec/rv40.c Lines: 260 275 94.5 %
Date: 2020-08-11 16:46:18 Branches: 196 211 92.9 %

Line Branch Exec Source
1
/*
2
 * RV40 decoder
3
 * Copyright (c) 2007 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
 * RV40 decoder
25
 */
26
27
#include "libavutil/imgutils.h"
28
29
#include "avcodec.h"
30
#include "mpegutils.h"
31
#include "mpegvideo.h"
32
#include "golomb.h"
33
34
#include "rv34.h"
35
#include "rv40vlc2.h"
36
#include "rv40data.h"
37
38
static VLC aic_top_vlc;
39
static VLC aic_mode1_vlc[AIC_MODE1_NUM], aic_mode2_vlc[AIC_MODE2_NUM];
40
static VLC ptype_vlc[NUM_PTYPE_VLCS], btype_vlc[NUM_BTYPE_VLCS];
41
42
static const int16_t mode2_offs[] = {
43
       0,  614, 1222, 1794, 2410,  3014,  3586,  4202,  4792, 5382, 5966, 6542,
44
    7138, 7716, 8292, 8864, 9444, 10030, 10642, 11212, 11814
45
};
46
47
/**
48
 * Initialize all tables.
49
 */
50
2
static av_cold void rv40_init_tables(void)
51
{
52
    int i;
53
    static VLC_TYPE aic_table[1 << AIC_TOP_BITS][2];
54
    static VLC_TYPE aic_mode1_table[AIC_MODE1_NUM << AIC_MODE1_BITS][2];
55
    static VLC_TYPE aic_mode2_table[11814][2];
56
    static VLC_TYPE ptype_table[NUM_PTYPE_VLCS << PTYPE_VLC_BITS][2];
57
    static VLC_TYPE btype_table[NUM_BTYPE_VLCS << BTYPE_VLC_BITS][2];
58
59
2
    aic_top_vlc.table = aic_table;
60
2
    aic_top_vlc.table_allocated = 1 << AIC_TOP_BITS;
61
2
    init_vlc(&aic_top_vlc, AIC_TOP_BITS, AIC_TOP_SIZE,
62
             rv40_aic_top_vlc_bits,  1, 1,
63
             rv40_aic_top_vlc_codes, 1, 1, INIT_VLC_USE_NEW_STATIC);
64
182
    for(i = 0; i < AIC_MODE1_NUM; i++){
65
        // Every tenth VLC table is empty
66
180
        if((i % 10) == 9) continue;
67
162
        aic_mode1_vlc[i].table = &aic_mode1_table[i << AIC_MODE1_BITS];
68
162
        aic_mode1_vlc[i].table_allocated = 1 << AIC_MODE1_BITS;
69
162
        init_vlc(&aic_mode1_vlc[i], AIC_MODE1_BITS, AIC_MODE1_SIZE,
70
                 aic_mode1_vlc_bits[i],  1, 1,
71
                 aic_mode1_vlc_codes[i], 1, 1, INIT_VLC_USE_NEW_STATIC);
72
    }
73
42
    for(i = 0; i < AIC_MODE2_NUM; i++){
74
40
        aic_mode2_vlc[i].table = &aic_mode2_table[mode2_offs[i]];
75
40
        aic_mode2_vlc[i].table_allocated = mode2_offs[i + 1] - mode2_offs[i];
76
40
        init_vlc(&aic_mode2_vlc[i], AIC_MODE2_BITS, AIC_MODE2_SIZE,
77
                 aic_mode2_vlc_bits[i],  1, 1,
78
                 aic_mode2_vlc_codes[i], 2, 2, INIT_VLC_USE_NEW_STATIC);
79
    }
80
16
    for(i = 0; i < NUM_PTYPE_VLCS; i++){
81
14
        ptype_vlc[i].table = &ptype_table[i << PTYPE_VLC_BITS];
82
14
        ptype_vlc[i].table_allocated = 1 << PTYPE_VLC_BITS;
83
14
        ff_init_vlc_sparse(&ptype_vlc[i], PTYPE_VLC_BITS, PTYPE_VLC_SIZE,
84
14
                            ptype_vlc_bits[i],  1, 1,
85
14
                            ptype_vlc_codes[i], 1, 1,
86
                            ptype_vlc_syms,     1, 1, INIT_VLC_USE_NEW_STATIC);
87
    }
88
14
    for(i = 0; i < NUM_BTYPE_VLCS; i++){
89
12
        btype_vlc[i].table = &btype_table[i << BTYPE_VLC_BITS];
90
12
        btype_vlc[i].table_allocated = 1 << BTYPE_VLC_BITS;
91
12
        ff_init_vlc_sparse(&btype_vlc[i], BTYPE_VLC_BITS, BTYPE_VLC_SIZE,
92
12
                            btype_vlc_bits[i],  1, 1,
93
12
                            btype_vlc_codes[i], 1, 1,
94
                            btype_vlc_syms,     1, 1, INIT_VLC_USE_NEW_STATIC);
95
    }
96
2
}
97
98
/**
99
 * Get stored dimension from bitstream.
100
 *
101
 * If the width/height is the standard one then it's coded as a 3-bit index.
102
 * Otherwise it is coded as escaped 8-bit portions.
103
 */
104
112
static int get_dimension(GetBitContext *gb, const int *dim)
105
{
106
112
    int t   = get_bits(gb, 3);
107
112
    int val = dim[t];
108
112
    if(val < 0)
109
56
        val = dim[get_bits1(gb) - val];
110
112
    if(!val){
111
        do{
112
112
            if (get_bits_left(gb) < 8)
113
                return AVERROR_INVALIDDATA;
114
112
            t = get_bits(gb, 8);
115
112
            val += t << 2;
116
112
        }while(t == 0xFF);
117
    }
118
112
    return val;
119
}
120
121
/**
122
 * Get encoded picture size - usually this is called from rv40_parse_slice_header.
123
 */
124
56
static void rv40_parse_picture_size(GetBitContext *gb, int *w, int *h)
125
{
126
56
    *w = get_dimension(gb, rv40_standard_widths);
127
56
    *h = get_dimension(gb, rv40_standard_heights);
128
56
}
129
130
2064
static int rv40_parse_slice_header(RV34DecContext *r, GetBitContext *gb, SliceInfo *si)
131
{
132
    int mb_bits;
133
2064
    int w = r->s.width, h = r->s.height;
134
    int mb_size;
135
    int ret;
136
137
2064
    memset(si, 0, sizeof(SliceInfo));
138
2064
    if(get_bits1(gb))
139
        return AVERROR_INVALIDDATA;
140
2064
    si->type = get_bits(gb, 2);
141
2064
    if(si->type == 1) si->type = 0;
142
2064
    si->quant = get_bits(gb, 5);
143
2064
    if(get_bits(gb, 2))
144
        return AVERROR_INVALIDDATA;
145
2064
    si->vlc_set = get_bits(gb, 2);
146
2064
    skip_bits1(gb);
147
2064
    si->pts = get_bits(gb, 13);
148

2064
    if(!si->type || !get_bits1(gb))
149
56
        rv40_parse_picture_size(gb, &w, &h);
150
2064
    if ((ret = av_image_check_size(w, h, 0, r->s.avctx)) < 0)
151
        return ret;
152
2064
    si->width  = w;
153
2064
    si->height = h;
154
2064
    mb_size = ((w + 15) >> 4) * ((h + 15) >> 4);
155
2064
    mb_bits = ff_rv34_get_start_offset(gb, mb_size);
156
2064
    si->start = get_bits(gb, mb_bits);
157
158
2064
    return 0;
159
}
160
161
/**
162
 * Decode 4x4 intra types array.
163
 */
164
12372
static int rv40_decode_intra_types(RV34DecContext *r, GetBitContext *gb, int8_t *dst)
165
{
166
12372
    MpegEncContext *s = &r->s;
167
    int i, j, k, v;
168
    int A, B, C;
169
    int pattern;
170
    int8_t *ptr;
171
172
61860
    for(i = 0; i < 4; i++, dst += r->intra_types_stride){
173

49488
        if(!i && s->first_slice_line){
174
4856
            pattern = get_vlc2(gb, aic_top_vlc.table, AIC_TOP_BITS, 1);
175
4856
            dst[0] = (pattern >> 2) & 2;
176
4856
            dst[1] = (pattern >> 1) & 2;
177
4856
            dst[2] =  pattern       & 2;
178
4856
            dst[3] = (pattern << 1) & 2;
179
4856
            continue;
180
        }
181
44632
        ptr = dst;
182
190656
        for(j = 0; j < 4; j++){
183
            /* Coefficients are read using VLC chosen by the prediction pattern
184
             * The first one (used for retrieving a pair of coefficients) is
185
             * constructed from the top, top right and left coefficients
186
             * The second one (used for retrieving only one coefficient) is
187
             * top + 10 * left.
188
             */
189
146024
            A = ptr[-r->intra_types_stride + 1]; // it won't be used for the last coefficient in a row
190
146024
            B = ptr[-r->intra_types_stride];
191
146024
            C = ptr[-1];
192
146024
            pattern = A + B * (1 << 4) + C * (1 << 8);
193
2593089
            for(k = 0; k < MODE2_PATTERNS_NUM; k++)
194
2480499
                if(pattern == rv40_aic_table_index[k])
195
33434
                    break;
196

146024
            if(j < 3 && k < MODE2_PATTERNS_NUM){ //pattern is found, decoding 2 coefficients
197
32504
                v = get_vlc2(gb, aic_mode2_vlc[k].table, AIC_MODE2_BITS, 2);
198
32504
                *ptr++ = v/9;
199
32504
                *ptr++ = v%9;
200
32504
                j++;
201
            }else{
202

113520
                if(B != -1 && C != -1)
203
111222
                    v = get_vlc2(gb, aic_mode1_vlc[B + C*10].table, AIC_MODE1_BITS, 1);
204
                else{ // tricky decoding
205
2298
                    v = 0;
206
2298
                    switch(C){
207
2298
                    case -1: // code 0 -> 1, 1 -> 0
208
2298
                        if(B < 2)
209
2298
                            v = get_bits1(gb) ^ 1;
210
2298
                        break;
211
                    case  0:
212
                    case  2: // code 0 -> 2, 1 -> 0
213
                        v = (get_bits1(gb) ^ 1) << 1;
214
                        break;
215
                    }
216
113520
                }
217
113520
                *ptr++ = v;
218
            }
219
        }
220
    }
221
12372
    return 0;
222
}
223
224
/**
225
 * Decode macroblock information.
226
 */
227
216000
static int rv40_decode_mb_info(RV34DecContext *r)
228
{
229
216000
    MpegEncContext *s = &r->s;
230
216000
    GetBitContext *gb = &s->gb;
231
    int q, i;
232
216000
    int prev_type = 0;
233
216000
    int mb_pos = s->mb_x + s->mb_y * s->mb_stride;
234
235
216000
    if(!r->s.mb_skip_run) {
236
80045
        r->s.mb_skip_run = get_interleaved_ue_golomb(gb) + 1;
237
80045
        if(r->s.mb_skip_run > (unsigned)s->mb_num)
238
            return -1;
239
    }
240
241
216000
    if(--r->s.mb_skip_run)
242
136461
         return RV34_MB_SKIP;
243
244
79539
    if(r->avail_cache[6-4]){
245
60557
        int blocks[RV34_MB_TYPES] = {0};
246
60557
        int count = 0;
247
60557
        if(r->avail_cache[6-1])
248
58685
            blocks[r->mb_type[mb_pos - 1]]++;
249
60557
        blocks[r->mb_type[mb_pos - s->mb_stride]]++;
250
60557
        if(r->avail_cache[6-2])
251
59440
            blocks[r->mb_type[mb_pos - s->mb_stride + 1]]++;
252
60557
        if(r->avail_cache[6-5])
253
58378
            blocks[r->mb_type[mb_pos - s->mb_stride - 1]]++;
254
360282
        for(i = 0; i < RV34_MB_TYPES; i++){
255
357222
            if(blocks[i] > count){
256
80201
                count = blocks[i];
257
80201
                prev_type = i;
258
80201
                if(count>1)
259
57497
                    break;
260
            }
261
        }
262
18982
    } else if (r->avail_cache[6-1])
263
18051
        prev_type = r->mb_type[mb_pos - 1];
264
265
79539
    if(s->pict_type == AV_PICTURE_TYPE_P){
266
25793
        prev_type = block_num_to_ptype_vlc_num[prev_type];
267
25793
        q = get_vlc2(gb, ptype_vlc[prev_type].table, PTYPE_VLC_BITS, 1);
268
25793
        if(q < PBTYPE_ESCAPE)
269
25793
            return q;
270
        q = get_vlc2(gb, ptype_vlc[prev_type].table, PTYPE_VLC_BITS, 1);
271
        av_log(s->avctx, AV_LOG_ERROR, "Dquant for P-frame\n");
272
    }else{
273
53746
        prev_type = block_num_to_btype_vlc_num[prev_type];
274
53746
        q = get_vlc2(gb, btype_vlc[prev_type].table, BTYPE_VLC_BITS, 1);
275
53746
        if(q < PBTYPE_ESCAPE)
276
53746
            return q;
277
        q = get_vlc2(gb, btype_vlc[prev_type].table, BTYPE_VLC_BITS, 1);
278
        av_log(s->avctx, AV_LOG_ERROR, "Dquant for B-frame\n");
279
    }
280
    return 0;
281
}
282
283
enum RV40BlockPos{
284
    POS_CUR,
285
    POS_TOP,
286
    POS_LEFT,
287
    POS_BOTTOM,
288
};
289
290
#define MASK_CUR          0x0001
291
#define MASK_RIGHT        0x0008
292
#define MASK_BOTTOM       0x0010
293
#define MASK_TOP          0x1000
294
#define MASK_Y_TOP_ROW    0x000F
295
#define MASK_Y_LAST_ROW   0xF000
296
#define MASK_Y_LEFT_COL   0x1111
297
#define MASK_Y_RIGHT_COL  0x8888
298
#define MASK_C_TOP_ROW    0x0003
299
#define MASK_C_LAST_ROW   0x000C
300
#define MASK_C_LEFT_COL   0x0005
301
#define MASK_C_RIGHT_COL  0x000A
302
303
static const int neighbour_offs_x[4] = { 0,  0, -1, 0 };
304
static const int neighbour_offs_y[4] = { 0, -1,  0, 1 };
305
306
2315053
static void rv40_adaptive_loop_filter(RV34DSPContext *rdsp,
307
                                      uint8_t *src, int stride, int dmode,
308
                                      int lim_q1, int lim_p1,
309
                                      int alpha, int beta, int beta2,
310
                                      int chroma, int edge, int dir)
311
{
312
    int filter_p1, filter_q1;
313
    int strong;
314
    int lims;
315
316
2315053
    strong = rdsp->rv40_loop_filter_strength[dir](src, stride, beta, beta2,
317
                                                  edge, &filter_p1, &filter_q1);
318
319
2315053
    lims = filter_p1 + filter_q1 + ((lim_q1 + lim_p1) >> 1) + 1;
320
321
2315053
    if (strong) {
322
328913
        rdsp->rv40_strong_loop_filter[dir](src, stride, alpha,
323
                                           lims, dmode, chroma);
324
1986140
    } else if (filter_p1 & filter_q1) {
325
1247984
        rdsp->rv40_weak_loop_filter[dir](src, stride, 1, 1, alpha, beta,
326
                                         lims, lim_q1, lim_p1);
327
738156
    } else if (filter_p1 | filter_q1) {
328
240995
        rdsp->rv40_weak_loop_filter[dir](src, stride, filter_p1, filter_q1,
329
                                         alpha, beta, lims >> 1, lim_q1 >> 1,
330
                                         lim_p1 >> 1);
331
    }
332
2315053
}
333
334
/**
335
 * RV40 loop filtering function
336
 */
337
6100
static void rv40_loop_filter(RV34DecContext *r, int row)
338
{
339
6100
    MpegEncContext *s = &r->s;
340
    int mb_pos, mb_x;
341
    int i, j, k;
342
    uint8_t *Y, *C;
343
    int alpha, beta, betaY, betaC;
344
    int q;
345
    int mbtype[4];   ///< current macroblock and its neighbours types
346
    /**
347
     * flags indicating that macroblock can be filtered with strong filter
348
     * it is set only for intra coded MB and MB with DCs coded separately
349
     */
350
    int mb_strong[4];
351
    int clip[4];     ///< MB filter clipping value calculated from filtering strength
352
    /**
353
     * coded block patterns for luma part of current macroblock and its neighbours
354
     * Format:
355
     * LSB corresponds to the top left block,
356
     * each nibble represents one row of subblocks.
357
     */
358
    int cbp[4];
359
    /**
360
     * coded block patterns for chroma part of current macroblock and its neighbours
361
     * Format is the same as for luma with two subblocks in a row.
362
     */
363
    int uvcbp[4][2];
364
    /**
365
     * This mask represents the pattern of luma subblocks that should be filtered
366
     * in addition to the coded ones because they lie at the edge of
367
     * 8x8 block with different enough motion vectors
368
     */
369
    unsigned mvmasks[4];
370
371
6100
    mb_pos = row * s->mb_stride;
372
225700
    for(mb_x = 0; mb_x < s->mb_width; mb_x++, mb_pos++){
373
219600
        int mbtype = s->current_picture_ptr->mb_type[mb_pos];
374

219600
        if(IS_INTRA(mbtype) || IS_SEPARATE_DC(mbtype))
375
23358
            r->cbp_luma  [mb_pos] = r->deblock_coefs[mb_pos] = 0xFFFF;
376
219600
        if(IS_INTRA(mbtype))
377
22811
            r->cbp_chroma[mb_pos] = 0xFF;
378
    }
379
6100
    mb_pos = row * s->mb_stride;
380
225700
    for(mb_x = 0; mb_x < s->mb_width; mb_x++, mb_pos++){
381
        int y_h_deblock, y_v_deblock;
382
        int c_v_deblock[2], c_h_deblock[2];
383
        int clip_left;
384
        int avail[4];
385
        unsigned y_to_deblock;
386
        int c_to_deblock[2];
387
388
219600
        q = s->current_picture_ptr->qscale_table[mb_pos];
389
219600
        alpha = rv40_alpha_tab[q];
390
219600
        beta  = rv40_beta_tab [q];
391
219600
        betaY = betaC = beta * 3;
392
219600
        if(s->width * s->height <= 176*144)
393
            betaY += beta;
394
395
219600
        avail[0] = 1;
396
219600
        avail[1] = row;
397
219600
        avail[2] = mb_x;
398
219600
        avail[3] = row < s->mb_height - 1;
399
1098000
        for(i = 0; i < 4; i++){
400
878400
            if(avail[i]){
401
850340
                int pos = mb_pos + neighbour_offs_x[i] + neighbour_offs_y[i]*s->mb_stride;
402
850340
                mvmasks[i] = r->deblock_coefs[pos];
403
850340
                mbtype [i] = s->current_picture_ptr->mb_type[pos];
404
850340
                cbp    [i] = r->cbp_luma[pos];
405
850340
                uvcbp[i][0] = r->cbp_chroma[pos] & 0xF;
406
850340
                uvcbp[i][1] = r->cbp_chroma[pos] >> 4;
407
            }else{
408
28060
                mvmasks[i] = 0;
409
28060
                mbtype [i] = mbtype[0];
410
28060
                cbp    [i] = 0;
411
28060
                uvcbp[i][0] = uvcbp[i][1] = 0;
412
            }
413

878400
            mb_strong[i] = IS_INTRA(mbtype[i]) || IS_SEPARATE_DC(mbtype[i]);
414
878400
            clip[i] = rv40_filter_clip_tbl[mb_strong[i] + 1][q];
415
        }
416
219600
        y_to_deblock =  mvmasks[POS_CUR]
417
219600
                     | (mvmasks[POS_BOTTOM] << 16);
418
        /* This pattern contains bits signalling that horizontal edges of
419
         * the current block can be filtered.
420
         * That happens when either of adjacent subblocks is coded or lies on
421
         * the edge of 8x8 blocks with motion vectors differing by more than
422
         * 3/4 pel in any component (any edge orientation for some reason).
423
         */
424
219600
        y_h_deblock =   y_to_deblock
425
219600
                    | ((cbp[POS_CUR]                           <<  4) & ~MASK_Y_TOP_ROW)
426
219600
                    | ((cbp[POS_TOP]        & MASK_Y_LAST_ROW) >> 12);
427
        /* This pattern contains bits signalling that vertical edges of
428
         * the current block can be filtered.
429
         * That happens when either of adjacent subblocks is coded or lies on
430
         * the edge of 8x8 blocks with motion vectors differing by more than
431
         * 3/4 pel in any component (any edge orientation for some reason).
432
         */
433
219600
        y_v_deblock =   y_to_deblock
434
219600
                    | ((cbp[POS_CUR]                      << 1) & ~MASK_Y_LEFT_COL)
435
219600
                    | ((cbp[POS_LEFT] & MASK_Y_RIGHT_COL) >> 3);
436
219600
        if(!mb_x)
437
6100
            y_v_deblock &= ~MASK_Y_LEFT_COL;
438
219600
        if(!row)
439
10980
            y_h_deblock &= ~MASK_Y_TOP_ROW;
440

219600
        if(row == s->mb_height - 1 || (mb_strong[POS_CUR] | mb_strong[POS_BOTTOM]))
441
44066
            y_h_deblock &= ~(MASK_Y_TOP_ROW << 16);
442
        /* Calculating chroma patterns is similar and easier since there is
443
         * no motion vector pattern for them.
444
         */
445
658800
        for(i = 0; i < 2; i++){
446
439200
            c_to_deblock[i] = (uvcbp[POS_BOTTOM][i] << 4) | uvcbp[POS_CUR][i];
447
439200
            c_v_deblock[i] =   c_to_deblock[i]
448
439200
                           | ((uvcbp[POS_CUR] [i]                       << 1) & ~MASK_C_LEFT_COL)
449
439200
                           | ((uvcbp[POS_LEFT][i]   & MASK_C_RIGHT_COL) >> 1);
450
439200
            c_h_deblock[i] =   c_to_deblock[i]
451
439200
                           | ((uvcbp[POS_TOP][i]    & MASK_C_LAST_ROW)  >> 2)
452
439200
                           |  (uvcbp[POS_CUR][i]                        << 2);
453
439200
            if(!mb_x)
454
12200
                c_v_deblock[i] &= ~MASK_C_LEFT_COL;
455
439200
            if(!row)
456
21960
                c_h_deblock[i] &= ~MASK_C_TOP_ROW;
457

439200
            if(row == s->mb_height - 1 || (mb_strong[POS_CUR] | mb_strong[POS_BOTTOM]))
458
88132
                c_h_deblock[i] &= ~(MASK_C_TOP_ROW << 4);
459
        }
460
461
1098000
        for(j = 0; j < 16; j += 4){
462
878400
            Y = s->current_picture_ptr->f->data[0] + mb_x*16 + (row*16 + j) * s->linesize;
463
4392000
            for(i = 0; i < 4; i++, Y += 4){
464
3513600
                int ij = i + j;
465
3513600
                int clip_cur = y_to_deblock & (MASK_CUR << ij) ? clip[POS_CUR] : 0;
466
3513600
                int dither = j ? ij : i*4;
467
468
                // if bottom block is coded then we can filter its top edge
469
                // (or bottom edge of this block, which is the same)
470
3513600
                if(y_h_deblock & (MASK_BOTTOM << ij)){
471
705968
                    rv40_adaptive_loop_filter(&r->rdsp, Y+4*s->linesize,
472
705968
                                              s->linesize, dither,
473
705968
                                              y_to_deblock & (MASK_BOTTOM << ij) ? clip[POS_CUR] : 0,
474
                                              clip_cur, alpha, beta, betaY,
475
                                              0, 0, 0);
476
                }
477
                // filter left block edge in ordinary mode (with low filtering strength)
478

3513600
                if(y_v_deblock & (MASK_CUR << ij) && (i || !(mb_strong[POS_CUR] | mb_strong[POS_LEFT]))){
479
703622
                    if(!i)
480
140445
                        clip_left = mvmasks[POS_LEFT] & (MASK_RIGHT << j) ? clip[POS_LEFT] : 0;
481
                    else
482
563177
                        clip_left = y_to_deblock & (MASK_CUR << (ij-1)) ? clip[POS_CUR] : 0;
483
703622
                    rv40_adaptive_loop_filter(&r->rdsp, Y, s->linesize, dither,
484
                                              clip_cur,
485
                                              clip_left,
486
                                              alpha, beta, betaY, 0, 0, 1);
487
                }
488
                // filter top edge of the current macroblock when filtering strength is high
489

3513600
                if(!j && y_h_deblock & (MASK_CUR << i) && (mb_strong[POS_CUR] | mb_strong[POS_TOP])){
490
132344
                    rv40_adaptive_loop_filter(&r->rdsp, Y, s->linesize, dither,
491
                                       clip_cur,
492
132344
                                       mvmasks[POS_TOP] & (MASK_TOP << i) ? clip[POS_TOP] : 0,
493
                                       alpha, beta, betaY, 0, 1, 0);
494
                }
495
                // filter left block edge in edge mode (with high filtering strength)
496

3513600
                if(y_v_deblock & (MASK_CUR << ij) && !i && (mb_strong[POS_CUR] | mb_strong[POS_LEFT])){
497
121464
                    clip_left = mvmasks[POS_LEFT] & (MASK_RIGHT << j) ? clip[POS_LEFT] : 0;
498
121464
                    rv40_adaptive_loop_filter(&r->rdsp, Y, s->linesize, dither,
499
                                       clip_cur,
500
                                       clip_left,
501
                                       alpha, beta, betaY, 0, 1, 1);
502
                }
503
            }
504
        }
505
658800
        for(k = 0; k < 2; k++){
506
1317600
            for(j = 0; j < 2; j++){
507
878400
                C = s->current_picture_ptr->f->data[k + 1] + mb_x*8 + (row*8 + j*4) * s->uvlinesize;
508
2635200
                for(i = 0; i < 2; i++, C += 4){
509
1756800
                    int ij = i + j*2;
510
1756800
                    int clip_cur = c_to_deblock[k] & (MASK_CUR << ij) ? clip[POS_CUR] : 0;
511
1756800
                    if(c_h_deblock[k] & (MASK_CUR << (ij+2))){
512
201976
                        int clip_bot = c_to_deblock[k] & (MASK_CUR << (ij+2)) ? clip[POS_CUR] : 0;
513
201976
                        rv40_adaptive_loop_filter(&r->rdsp, C+4*s->uvlinesize, s->uvlinesize, i*8,
514
                                           clip_bot,
515
                                           clip_cur,
516
                                           alpha, beta, betaC, 1, 0, 0);
517
                    }
518

1756800
                    if((c_v_deblock[k] & (MASK_CUR << ij)) && (i || !(mb_strong[POS_CUR] | mb_strong[POS_LEFT]))){
519
199885
                        if(!i)
520
48364
                            clip_left = uvcbp[POS_LEFT][k] & (MASK_CUR << (2*j+1)) ? clip[POS_LEFT] : 0;
521
                        else
522
151521
                            clip_left = c_to_deblock[k]    & (MASK_CUR << (ij-1))  ? clip[POS_CUR]  : 0;
523
199885
                        rv40_adaptive_loop_filter(&r->rdsp, C, s->uvlinesize, j*8,
524
                                           clip_cur,
525
                                           clip_left,
526
                                           alpha, beta, betaC, 1, 0, 1);
527
                    }
528

1756800
                    if(!j && c_h_deblock[k] & (MASK_CUR << ij) && (mb_strong[POS_CUR] | mb_strong[POS_TOP])){
529
130217
                        int clip_top = uvcbp[POS_TOP][k] & (MASK_CUR << (ij+2)) ? clip[POS_TOP] : 0;
530
130217
                        rv40_adaptive_loop_filter(&r->rdsp, C, s->uvlinesize, i*8,
531
                                           clip_cur,
532
                                           clip_top,
533
                                           alpha, beta, betaC, 1, 1, 0);
534
                    }
535

1756800
                    if(c_v_deblock[k] & (MASK_CUR << ij) && !i && (mb_strong[POS_CUR] | mb_strong[POS_LEFT])){
536
119577
                        clip_left = uvcbp[POS_LEFT][k] & (MASK_CUR << (2*j+1)) ? clip[POS_LEFT] : 0;
537
119577
                        rv40_adaptive_loop_filter(&r->rdsp, C, s->uvlinesize, j*8,
538
                                           clip_cur,
539
                                           clip_left,
540
                                           alpha, beta, betaC, 1, 1, 1);
541
                    }
542
                }
543
            }
544
        }
545
    }
546
6100
}
547
548
/**
549
 * Initialize decoder.
550
 */
551
4
static av_cold int rv40_decode_init(AVCodecContext *avctx)
552
{
553
4
    RV34DecContext *r = avctx->priv_data;
554
    int ret;
555
556
4
    r->rv30 = 0;
557
4
    if ((ret = ff_rv34_decode_init(avctx)) < 0)
558
        return ret;
559
4
    if(!aic_top_vlc.bits)
560
2
        rv40_init_tables();
561
4
    r->parse_slice_header = rv40_parse_slice_header;
562
4
    r->decode_intra_types = rv40_decode_intra_types;
563
4
    r->decode_mb_info     = rv40_decode_mb_info;
564
4
    r->loop_filter        = rv40_loop_filter;
565
4
    r->luma_dc_quant_i = rv40_luma_dc_quant[0];
566
4
    r->luma_dc_quant_p = rv40_luma_dc_quant[1];
567
4
    return 0;
568
}
569
570
AVCodec ff_rv40_decoder = {
571
    .name                  = "rv40",
572
    .long_name             = NULL_IF_CONFIG_SMALL("RealVideo 4.0"),
573
    .type                  = AVMEDIA_TYPE_VIDEO,
574
    .id                    = AV_CODEC_ID_RV40,
575
    .priv_data_size        = sizeof(RV34DecContext),
576
    .init                  = rv40_decode_init,
577
    .close                 = ff_rv34_decode_end,
578
    .decode                = ff_rv34_decode_frame,
579
    .capabilities          = AV_CODEC_CAP_DR1 | AV_CODEC_CAP_DELAY |
580
                             AV_CODEC_CAP_FRAME_THREADS,
581
    .flush                 = ff_mpeg_flush,
582
    .pix_fmts              = (const enum AVPixelFormat[]) {
583
        AV_PIX_FMT_YUV420P,
584
        AV_PIX_FMT_NONE
585
    },
586
    .update_thread_context = ONLY_IF_THREADS_ENABLED(ff_rv34_decode_update_thread_context),
587
    .caps_internal         = FF_CODEC_CAP_ALLOCATE_PROGRESS,
588
};