FFmpeg coverage


Directory: ../../../ffmpeg/
File: src/libavcodec/rv40.c
Date: 2022-07-05 19:52:29
Exec Total Coverage
Lines: 263 278 94.6%
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 "config.h"
28
29 #include "libavutil/imgutils.h"
30 #include "libavutil/thread.h"
31
32 #include "avcodec.h"
33 #include "codec_internal.h"
34 #include "mpegutils.h"
35 #include "mpegvideo.h"
36 #include "mpegvideodec.h"
37 #include "golomb.h"
38
39 #include "rv34.h"
40 #include "rv40vlc2.h"
41 #include "rv40data.h"
42
43 static VLC aic_top_vlc;
44 static VLC aic_mode1_vlc[AIC_MODE1_NUM], aic_mode2_vlc[AIC_MODE2_NUM];
45 static VLC ptype_vlc[NUM_PTYPE_VLCS], btype_vlc[NUM_BTYPE_VLCS];
46
47 190 static av_cold void rv40_init_table(VLC *vlc, unsigned *offset, int nb_bits,
48 int nb_codes, const uint8_t (*tab)[2])
49 {
50 static VLCElem vlc_buf[11776];
51
52 190 vlc->table = &vlc_buf[*offset];
53 190 vlc->table_allocated = 1 << nb_bits;
54 190 *offset += 1 << nb_bits;
55
56 190 ff_init_vlc_from_lengths(vlc, nb_bits, nb_codes,
57 190 &tab[0][1], 2, &tab[0][0], 2, 1,
58 0, INIT_VLC_USE_NEW_STATIC, NULL);
59 190 }
60
61 /**
62 * Initialize all tables.
63 */
64 2 static av_cold void rv40_init_tables(void)
65 {
66 2 int i, offset = 0;
67 static VLCElem aic_mode2_table[11814];
68
69 2 rv40_init_table(&aic_top_vlc, &offset, AIC_TOP_BITS, AIC_TOP_SIZE,
70 rv40_aic_top_vlc_tab);
71
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182 for(i = 0; i < AIC_MODE1_NUM; i++){
72 // Every tenth VLC table is empty
73
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180 if((i % 10) == 9) continue;
74 162 rv40_init_table(&aic_mode1_vlc[i], &offset, AIC_MODE1_BITS,
75 162 AIC_MODE1_SIZE, aic_mode1_vlc_tabs[i]);
76 }
77
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42 for (unsigned i = 0, offset = 0; i < AIC_MODE2_NUM; i++){
78 uint16_t syms[AIC_MODE2_SIZE];
79
80
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3280 for (int j = 0; j < AIC_MODE2_SIZE; j++) {
81 3240 int first = aic_mode2_vlc_syms[i][j] >> 4;
82 3240 int second = aic_mode2_vlc_syms[i][j] & 0xF;
83 if (HAVE_BIGENDIAN)
84 syms[j] = (first << 8) | second;
85 else
86 3240 syms[j] = first | (second << 8);
87 }
88 40 aic_mode2_vlc[i].table = &aic_mode2_table[offset];
89 40 aic_mode2_vlc[i].table_allocated = FF_ARRAY_ELEMS(aic_mode2_table) - offset;
90 40 ff_init_vlc_from_lengths(&aic_mode2_vlc[i], AIC_MODE2_BITS, AIC_MODE2_SIZE,
91 40 aic_mode2_vlc_bits[i], 1,
92 syms, 2, 2, 0, INIT_VLC_STATIC_OVERLONG, NULL);
93 40 offset += aic_mode2_vlc[i].table_size;
94 }
95
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16 for(i = 0; i < NUM_PTYPE_VLCS; i++){
96 14 rv40_init_table(&ptype_vlc[i], &offset, PTYPE_VLC_BITS, PTYPE_VLC_SIZE,
97 14 ptype_vlc_tabs[i]);
98 }
99
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14 for(i = 0; i < NUM_BTYPE_VLCS; i++){
100 12 rv40_init_table(&btype_vlc[i], &offset, BTYPE_VLC_BITS, BTYPE_VLC_SIZE,
101 12 btype_vlc_tabs[i]);
102 }
103 2 }
104
105 /**
106 * Get stored dimension from bitstream.
107 *
108 * If the width/height is the standard one then it's coded as a 3-bit index.
109 * Otherwise it is coded as escaped 8-bit portions.
110 */
111 112 static int get_dimension(GetBitContext *gb, const int *dim)
112 {
113 112 int t = get_bits(gb, 3);
114 112 int val = dim[t];
115
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112 if(val < 0)
116 56 val = dim[get_bits1(gb) - val];
117
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112 if(!val){
118 do{
119
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112 if (get_bits_left(gb) < 8)
120 return AVERROR_INVALIDDATA;
121 112 t = get_bits(gb, 8);
122 112 val += t << 2;
123
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112 }while(t == 0xFF);
124 }
125 112 return val;
126 }
127
128 /**
129 * Get encoded picture size - usually this is called from rv40_parse_slice_header.
130 */
131 56 static void rv40_parse_picture_size(GetBitContext *gb, int *w, int *h)
132 {
133 56 *w = get_dimension(gb, rv40_standard_widths);
134 56 *h = get_dimension(gb, rv40_standard_heights);
135 56 }
136
137 2064 static int rv40_parse_slice_header(RV34DecContext *r, GetBitContext *gb, SliceInfo *si)
138 {
139 int mb_bits;
140 2064 int w = r->s.width, h = r->s.height;
141 int mb_size;
142 int ret;
143
144 2064 memset(si, 0, sizeof(SliceInfo));
145
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2064 if(get_bits1(gb))
146 return AVERROR_INVALIDDATA;
147 2064 si->type = get_bits(gb, 2);
148
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2064 if(si->type == 1) si->type = 0;
149 2064 si->quant = get_bits(gb, 5);
150
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2064 if(get_bits(gb, 2))
151 return AVERROR_INVALIDDATA;
152 2064 si->vlc_set = get_bits(gb, 2);
153 2064 skip_bits1(gb);
154 2064 si->pts = get_bits(gb, 13);
155
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2064 if(!si->type || !get_bits1(gb))
156 56 rv40_parse_picture_size(gb, &w, &h);
157
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2064 if ((ret = av_image_check_size(w, h, 0, r->s.avctx)) < 0)
158 return ret;
159 2064 si->width = w;
160 2064 si->height = h;
161 2064 mb_size = ((w + 15) >> 4) * ((h + 15) >> 4);
162 2064 mb_bits = ff_rv34_get_start_offset(gb, mb_size);
163 2064 si->start = get_bits(gb, mb_bits);
164
165 2064 return 0;
166 }
167
168 /**
169 * Decode 4x4 intra types array.
170 */
171 12372 static int rv40_decode_intra_types(RV34DecContext *r, GetBitContext *gb, int8_t *dst)
172 {
173 12372 MpegEncContext *s = &r->s;
174 int i, j, k, v;
175 int A, B, C;
176 int pattern;
177 int8_t *ptr;
178
179
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61860 for(i = 0; i < 4; i++, dst += r->intra_types_stride){
180
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49488 if(!i && s->first_slice_line){
181 4856 pattern = get_vlc2(gb, aic_top_vlc.table, AIC_TOP_BITS, 1);
182 4856 dst[0] = (pattern >> 2) & 2;
183 4856 dst[1] = (pattern >> 1) & 2;
184 4856 dst[2] = pattern & 2;
185 4856 dst[3] = (pattern << 1) & 2;
186 4856 continue;
187 }
188 44632 ptr = dst;
189
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190656 for(j = 0; j < 4; j++){
190 /* Coefficients are read using VLC chosen by the prediction pattern
191 * The first one (used for retrieving a pair of coefficients) is
192 * constructed from the top, top right and left coefficients
193 * The second one (used for retrieving only one coefficient) is
194 * top + 10 * left.
195 */
196 146024 A = ptr[-r->intra_types_stride + 1]; // it won't be used for the last coefficient in a row
197 146024 B = ptr[-r->intra_types_stride];
198 146024 C = ptr[-1];
199 146024 pattern = A + B * (1 << 4) + C * (1 << 8);
200
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2593089 for(k = 0; k < MODE2_PATTERNS_NUM; k++)
201
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2480499 if(pattern == rv40_aic_table_index[k])
202 33434 break;
203
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146024 if(j < 3 && k < MODE2_PATTERNS_NUM){ //pattern is found, decoding 2 coefficients
204 32504 AV_WN16(ptr, get_vlc2(gb, aic_mode2_vlc[k].table, AIC_MODE2_BITS, 2));
205 32504 ptr += 2;
206 32504 j++;
207 }else{
208
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113520 if(B != -1 && C != -1)
209 111222 v = get_vlc2(gb, aic_mode1_vlc[B + C*10].table, AIC_MODE1_BITS, 1);
210 else{ // tricky decoding
211 2298 v = 0;
212
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2298 switch(C){
213 2298 case -1: // code 0 -> 1, 1 -> 0
214
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2298 if(B < 2)
215 2298 v = get_bits1(gb) ^ 1;
216 2298 break;
217 case 0:
218 case 2: // code 0 -> 2, 1 -> 0
219 v = (get_bits1(gb) ^ 1) << 1;
220 break;
221 }
222 }
223 113520 *ptr++ = v;
224 }
225 }
226 }
227 12372 return 0;
228 }
229
230 /**
231 * Decode macroblock information.
232 */
233 216000 static int rv40_decode_mb_info(RV34DecContext *r)
234 {
235 216000 MpegEncContext *s = &r->s;
236 216000 GetBitContext *gb = &s->gb;
237 int q, i;
238 216000 int prev_type = 0;
239 216000 int mb_pos = s->mb_x + s->mb_y * s->mb_stride;
240
241
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216000 if(!r->s.mb_skip_run) {
242 80045 r->s.mb_skip_run = get_interleaved_ue_golomb(gb) + 1;
243
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80045 if(r->s.mb_skip_run > (unsigned)s->mb_num)
244 return -1;
245 }
246
247
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216000 if(--r->s.mb_skip_run)
248 136461 return RV34_MB_SKIP;
249
250
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79539 if(r->avail_cache[6-4]){
251 60557 int blocks[RV34_MB_TYPES] = {0};
252 60557 int count = 0;
253
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60557 if(r->avail_cache[6-1])
254 58685 blocks[r->mb_type[mb_pos - 1]]++;
255 60557 blocks[r->mb_type[mb_pos - s->mb_stride]]++;
256
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60557 if(r->avail_cache[6-2])
257 59440 blocks[r->mb_type[mb_pos - s->mb_stride + 1]]++;
258
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60557 if(r->avail_cache[6-5])
259 58378 blocks[r->mb_type[mb_pos - s->mb_stride - 1]]++;
260
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360282 for(i = 0; i < RV34_MB_TYPES; i++){
261
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357222 if(blocks[i] > count){
262 80201 count = blocks[i];
263 80201 prev_type = i;
264
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80201 if(count>1)
265 57497 break;
266 }
267 }
268
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18982 } else if (r->avail_cache[6-1])
269 18051 prev_type = r->mb_type[mb_pos - 1];
270
271
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79539 if(s->pict_type == AV_PICTURE_TYPE_P){
272 25793 prev_type = block_num_to_ptype_vlc_num[prev_type];
273 25793 q = get_vlc2(gb, ptype_vlc[prev_type].table, PTYPE_VLC_BITS, 1);
274
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25793 if(q < PBTYPE_ESCAPE)
275 25793 return q;
276 q = get_vlc2(gb, ptype_vlc[prev_type].table, PTYPE_VLC_BITS, 1);
277 av_log(s->avctx, AV_LOG_ERROR, "Dquant for P-frame\n");
278 }else{
279 53746 prev_type = block_num_to_btype_vlc_num[prev_type];
280 53746 q = get_vlc2(gb, btype_vlc[prev_type].table, BTYPE_VLC_BITS, 1);
281
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53746 if(q < PBTYPE_ESCAPE)
282 53746 return q;
283 q = get_vlc2(gb, btype_vlc[prev_type].table, BTYPE_VLC_BITS, 1);
284 av_log(s->avctx, AV_LOG_ERROR, "Dquant for B-frame\n");
285 }
286 return 0;
287 }
288
289 enum RV40BlockPos{
290 POS_CUR,
291 POS_TOP,
292 POS_LEFT,
293 POS_BOTTOM,
294 };
295
296 #define MASK_CUR 0x0001
297 #define MASK_RIGHT 0x0008
298 #define MASK_BOTTOM 0x0010
299 #define MASK_TOP 0x1000
300 #define MASK_Y_TOP_ROW 0x000F
301 #define MASK_Y_LAST_ROW 0xF000
302 #define MASK_Y_LEFT_COL 0x1111
303 #define MASK_Y_RIGHT_COL 0x8888
304 #define MASK_C_TOP_ROW 0x0003
305 #define MASK_C_LAST_ROW 0x000C
306 #define MASK_C_LEFT_COL 0x0005
307 #define MASK_C_RIGHT_COL 0x000A
308
309 static const int neighbour_offs_x[4] = { 0, 0, -1, 0 };
310 static const int neighbour_offs_y[4] = { 0, -1, 0, 1 };
311
312 2315053 static void rv40_adaptive_loop_filter(RV34DSPContext *rdsp,
313 uint8_t *src, int stride, int dmode,
314 int lim_q1, int lim_p1,
315 int alpha, int beta, int beta2,
316 int chroma, int edge, int dir)
317 {
318 int filter_p1, filter_q1;
319 int strong;
320 int lims;
321
322 2315053 strong = rdsp->rv40_loop_filter_strength[dir](src, stride, beta, beta2,
323 edge, &filter_p1, &filter_q1);
324
325 2315053 lims = filter_p1 + filter_q1 + ((lim_q1 + lim_p1) >> 1) + 1;
326
327
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2315053 if (strong) {
328 328913 rdsp->rv40_strong_loop_filter[dir](src, stride, alpha,
329 lims, dmode, chroma);
330
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1986140 } else if (filter_p1 & filter_q1) {
331 1247984 rdsp->rv40_weak_loop_filter[dir](src, stride, 1, 1, alpha, beta,
332 lims, lim_q1, lim_p1);
333
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738156 } else if (filter_p1 | filter_q1) {
334 240995 rdsp->rv40_weak_loop_filter[dir](src, stride, filter_p1, filter_q1,
335 alpha, beta, lims >> 1, lim_q1 >> 1,
336 lim_p1 >> 1);
337 }
338 2315053 }
339
340 /**
341 * RV40 loop filtering function
342 */
343 6100 static void rv40_loop_filter(RV34DecContext *r, int row)
344 {
345 6100 MpegEncContext *s = &r->s;
346 int mb_pos, mb_x;
347 int i, j, k;
348 uint8_t *Y, *C;
349 int alpha, beta, betaY, betaC;
350 int q;
351 int mbtype[4]; ///< current macroblock and its neighbours types
352 /**
353 * flags indicating that macroblock can be filtered with strong filter
354 * it is set only for intra coded MB and MB with DCs coded separately
355 */
356 int mb_strong[4];
357 int clip[4]; ///< MB filter clipping value calculated from filtering strength
358 /**
359 * coded block patterns for luma part of current macroblock and its neighbours
360 * Format:
361 * LSB corresponds to the top left block,
362 * each nibble represents one row of subblocks.
363 */
364 int cbp[4];
365 /**
366 * coded block patterns for chroma part of current macroblock and its neighbours
367 * Format is the same as for luma with two subblocks in a row.
368 */
369 int uvcbp[4][2];
370 /**
371 * This mask represents the pattern of luma subblocks that should be filtered
372 * in addition to the coded ones because they lie at the edge of
373 * 8x8 block with different enough motion vectors
374 */
375 unsigned mvmasks[4];
376
377 6100 mb_pos = row * s->mb_stride;
378
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225700 for(mb_x = 0; mb_x < s->mb_width; mb_x++, mb_pos++){
379 219600 int mbtype = s->current_picture_ptr->mb_type[mb_pos];
380
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219600 if(IS_INTRA(mbtype) || IS_SEPARATE_DC(mbtype))
381 23358 r->cbp_luma [mb_pos] = r->deblock_coefs[mb_pos] = 0xFFFF;
382
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219600 if(IS_INTRA(mbtype))
383 22811 r->cbp_chroma[mb_pos] = 0xFF;
384 }
385 6100 mb_pos = row * s->mb_stride;
386
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225700 for(mb_x = 0; mb_x < s->mb_width; mb_x++, mb_pos++){
387 int y_h_deblock, y_v_deblock;
388 int c_v_deblock[2], c_h_deblock[2];
389 int clip_left;
390 int avail[4];
391 unsigned y_to_deblock;
392 int c_to_deblock[2];
393
394 219600 q = s->current_picture_ptr->qscale_table[mb_pos];
395 219600 alpha = rv40_alpha_tab[q];
396 219600 beta = rv40_beta_tab [q];
397 219600 betaY = betaC = beta * 3;
398
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219600 if(s->width * s->height <= 176*144)
399 betaY += beta;
400
401 219600 avail[0] = 1;
402 219600 avail[1] = row;
403 219600 avail[2] = mb_x;
404 219600 avail[3] = row < s->mb_height - 1;
405
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1098000 for(i = 0; i < 4; i++){
406
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878400 if(avail[i]){
407 850340 int pos = mb_pos + neighbour_offs_x[i] + neighbour_offs_y[i]*s->mb_stride;
408 850340 mvmasks[i] = r->deblock_coefs[pos];
409 850340 mbtype [i] = s->current_picture_ptr->mb_type[pos];
410 850340 cbp [i] = r->cbp_luma[pos];
411 850340 uvcbp[i][0] = r->cbp_chroma[pos] & 0xF;
412 850340 uvcbp[i][1] = r->cbp_chroma[pos] >> 4;
413 }else{
414 28060 mvmasks[i] = 0;
415 28060 mbtype [i] = mbtype[0];
416 28060 cbp [i] = 0;
417 28060 uvcbp[i][0] = uvcbp[i][1] = 0;
418 }
419
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878400 mb_strong[i] = IS_INTRA(mbtype[i]) || IS_SEPARATE_DC(mbtype[i]);
420 878400 clip[i] = rv40_filter_clip_tbl[mb_strong[i] + 1][q];
421 }
422 219600 y_to_deblock = mvmasks[POS_CUR]
423 219600 | (mvmasks[POS_BOTTOM] << 16);
424 /* This pattern contains bits signalling that horizontal edges of
425 * the current block can be filtered.
426 * That happens when either of adjacent subblocks is coded or lies on
427 * the edge of 8x8 blocks with motion vectors differing by more than
428 * 3/4 pel in any component (any edge orientation for some reason).
429 */
430 219600 y_h_deblock = y_to_deblock
431 219600 | ((cbp[POS_CUR] << 4) & ~MASK_Y_TOP_ROW)
432 219600 | ((cbp[POS_TOP] & MASK_Y_LAST_ROW) >> 12);
433 /* This pattern contains bits signalling that vertical edges of
434 * the current block can be filtered.
435 * That happens when either of adjacent subblocks is coded or lies on
436 * the edge of 8x8 blocks with motion vectors differing by more than
437 * 3/4 pel in any component (any edge orientation for some reason).
438 */
439 219600 y_v_deblock = y_to_deblock
440 219600 | ((cbp[POS_CUR] << 1) & ~MASK_Y_LEFT_COL)
441 219600 | ((cbp[POS_LEFT] & MASK_Y_RIGHT_COL) >> 3);
442
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219600 if(!mb_x)
443 6100 y_v_deblock &= ~MASK_Y_LEFT_COL;
444
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219600 if(!row)
445 10980 y_h_deblock &= ~MASK_Y_TOP_ROW;
446
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219600 if(row == s->mb_height - 1 || (mb_strong[POS_CUR] | mb_strong[POS_BOTTOM]))
447 44066 y_h_deblock &= ~(MASK_Y_TOP_ROW << 16);
448 /* Calculating chroma patterns is similar and easier since there is
449 * no motion vector pattern for them.
450 */
451
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658800 for(i = 0; i < 2; i++){
452 439200 c_to_deblock[i] = (uvcbp[POS_BOTTOM][i] << 4) | uvcbp[POS_CUR][i];
453 439200 c_v_deblock[i] = c_to_deblock[i]
454 439200 | ((uvcbp[POS_CUR] [i] << 1) & ~MASK_C_LEFT_COL)
455 439200 | ((uvcbp[POS_LEFT][i] & MASK_C_RIGHT_COL) >> 1);
456 439200 c_h_deblock[i] = c_to_deblock[i]
457 439200 | ((uvcbp[POS_TOP][i] & MASK_C_LAST_ROW) >> 2)
458 439200 | (uvcbp[POS_CUR][i] << 2);
459
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439200 if(!mb_x)
460 12200 c_v_deblock[i] &= ~MASK_C_LEFT_COL;
461
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439200 if(!row)
462 21960 c_h_deblock[i] &= ~MASK_C_TOP_ROW;
463
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439200 if(row == s->mb_height - 1 || (mb_strong[POS_CUR] | mb_strong[POS_BOTTOM]))
464 88132 c_h_deblock[i] &= ~(MASK_C_TOP_ROW << 4);
465 }
466
467
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1098000 for(j = 0; j < 16; j += 4){
468 878400 Y = s->current_picture_ptr->f->data[0] + mb_x*16 + (row*16 + j) * s->linesize;
469
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4392000 for(i = 0; i < 4; i++, Y += 4){
470 3513600 int ij = i + j;
471
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3513600 int clip_cur = y_to_deblock & (MASK_CUR << ij) ? clip[POS_CUR] : 0;
472
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3513600 int dither = j ? ij : i*4;
473
474 // if bottom block is coded then we can filter its top edge
475 // (or bottom edge of this block, which is the same)
476
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3513600 if(y_h_deblock & (MASK_BOTTOM << ij)){
477 705968 rv40_adaptive_loop_filter(&r->rdsp, Y+4*s->linesize,
478 705968 s->linesize, dither,
479
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705968 y_to_deblock & (MASK_BOTTOM << ij) ? clip[POS_CUR] : 0,
480 clip_cur, alpha, beta, betaY,
481 0, 0, 0);
482 }
483 // filter left block edge in ordinary mode (with low filtering strength)
484
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3513600 if(y_v_deblock & (MASK_CUR << ij) && (i || !(mb_strong[POS_CUR] | mb_strong[POS_LEFT]))){
485
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703622 if(!i)
486
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140445 clip_left = mvmasks[POS_LEFT] & (MASK_RIGHT << j) ? clip[POS_LEFT] : 0;
487 else
488
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563177 clip_left = y_to_deblock & (MASK_CUR << (ij-1)) ? clip[POS_CUR] : 0;
489 703622 rv40_adaptive_loop_filter(&r->rdsp, Y, s->linesize, dither,
490 clip_cur,
491 clip_left,
492 alpha, beta, betaY, 0, 0, 1);
493 }
494 // filter top edge of the current macroblock when filtering strength is high
495
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3513600 if(!j && y_h_deblock & (MASK_CUR << i) && (mb_strong[POS_CUR] | mb_strong[POS_TOP])){
496 132344 rv40_adaptive_loop_filter(&r->rdsp, Y, s->linesize, dither,
497 clip_cur,
498
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132344 mvmasks[POS_TOP] & (MASK_TOP << i) ? clip[POS_TOP] : 0,
499 alpha, beta, betaY, 0, 1, 0);
500 }
501 // filter left block edge in edge mode (with high filtering strength)
502
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3513600 if(y_v_deblock & (MASK_CUR << ij) && !i && (mb_strong[POS_CUR] | mb_strong[POS_LEFT])){
503
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121464 clip_left = mvmasks[POS_LEFT] & (MASK_RIGHT << j) ? clip[POS_LEFT] : 0;
504 121464 rv40_adaptive_loop_filter(&r->rdsp, Y, s->linesize, dither,
505 clip_cur,
506 clip_left,
507 alpha, beta, betaY, 0, 1, 1);
508 }
509 }
510 }
511
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658800 for(k = 0; k < 2; k++){
512
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1317600 for(j = 0; j < 2; j++){
513 878400 C = s->current_picture_ptr->f->data[k + 1] + mb_x*8 + (row*8 + j*4) * s->uvlinesize;
514
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2635200 for(i = 0; i < 2; i++, C += 4){
515 1756800 int ij = i + j*2;
516
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1756800 int clip_cur = c_to_deblock[k] & (MASK_CUR << ij) ? clip[POS_CUR] : 0;
517
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1756800 if(c_h_deblock[k] & (MASK_CUR << (ij+2))){
518
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201976 int clip_bot = c_to_deblock[k] & (MASK_CUR << (ij+2)) ? clip[POS_CUR] : 0;
519 201976 rv40_adaptive_loop_filter(&r->rdsp, C+4*s->uvlinesize, s->uvlinesize, i*8,
520 clip_bot,
521 clip_cur,
522 alpha, beta, betaC, 1, 0, 0);
523 }
524
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1756800 if((c_v_deblock[k] & (MASK_CUR << ij)) && (i || !(mb_strong[POS_CUR] | mb_strong[POS_LEFT]))){
525
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199885 if(!i)
526
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48364 clip_left = uvcbp[POS_LEFT][k] & (MASK_CUR << (2*j+1)) ? clip[POS_LEFT] : 0;
527 else
528
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151521 clip_left = c_to_deblock[k] & (MASK_CUR << (ij-1)) ? clip[POS_CUR] : 0;
529 199885 rv40_adaptive_loop_filter(&r->rdsp, C, s->uvlinesize, j*8,
530 clip_cur,
531 clip_left,
532 alpha, beta, betaC, 1, 0, 1);
533 }
534
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1756800 if(!j && c_h_deblock[k] & (MASK_CUR << ij) && (mb_strong[POS_CUR] | mb_strong[POS_TOP])){
535
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130217 int clip_top = uvcbp[POS_TOP][k] & (MASK_CUR << (ij+2)) ? clip[POS_TOP] : 0;
536 130217 rv40_adaptive_loop_filter(&r->rdsp, C, s->uvlinesize, i*8,
537 clip_cur,
538 clip_top,
539 alpha, beta, betaC, 1, 1, 0);
540 }
541
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1756800 if(c_v_deblock[k] & (MASK_CUR << ij) && !i && (mb_strong[POS_CUR] | mb_strong[POS_LEFT])){
542
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119577 clip_left = uvcbp[POS_LEFT][k] & (MASK_CUR << (2*j+1)) ? clip[POS_LEFT] : 0;
543 119577 rv40_adaptive_loop_filter(&r->rdsp, C, s->uvlinesize, j*8,
544 clip_cur,
545 clip_left,
546 alpha, beta, betaC, 1, 1, 1);
547 }
548 }
549 }
550 }
551 }
552 6100 }
553
554 /**
555 * Initialize decoder.
556 */
557 4 static av_cold int rv40_decode_init(AVCodecContext *avctx)
558 {
559 static AVOnce init_static_once = AV_ONCE_INIT;
560 4 RV34DecContext *r = avctx->priv_data;
561 int ret;
562
563 4 r->rv30 = 0;
564
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4 if ((ret = ff_rv34_decode_init(avctx)) < 0)
565 return ret;
566 4 r->parse_slice_header = rv40_parse_slice_header;
567 4 r->decode_intra_types = rv40_decode_intra_types;
568 4 r->decode_mb_info = rv40_decode_mb_info;
569 4 r->loop_filter = rv40_loop_filter;
570 4 r->luma_dc_quant_i = rv40_luma_dc_quant[0];
571 4 r->luma_dc_quant_p = rv40_luma_dc_quant[1];
572 4 ff_rv40dsp_init(&r->rdsp);
573 4 ff_thread_once(&init_static_once, rv40_init_tables);
574 4 return 0;
575 }
576
577 const FFCodec ff_rv40_decoder = {
578 .p.name = "rv40",
579 .p.long_name = NULL_IF_CONFIG_SMALL("RealVideo 4.0"),
580 .p.type = AVMEDIA_TYPE_VIDEO,
581 .p.id = AV_CODEC_ID_RV40,
582 .priv_data_size = sizeof(RV34DecContext),
583 .init = rv40_decode_init,
584 .close = ff_rv34_decode_end,
585 FF_CODEC_DECODE_CB(ff_rv34_decode_frame),
586 .p.capabilities = AV_CODEC_CAP_DR1 | AV_CODEC_CAP_DELAY |
587 AV_CODEC_CAP_FRAME_THREADS,
588 .flush = ff_mpeg_flush,
589 .p.pix_fmts = (const enum AVPixelFormat[]) {
590 AV_PIX_FMT_YUV420P,
591 AV_PIX_FMT_NONE
592 },
593 .update_thread_context = ONLY_IF_THREADS_ENABLED(ff_rv34_decode_update_thread_context),
594 .caps_internal = FF_CODEC_CAP_INIT_THREADSAFE |
595 FF_CODEC_CAP_ALLOCATE_PROGRESS,
596 };
597