FFmpeg coverage

Directory: ../../../ffmpeg/
File: src/libavcodec/rv40.c
Date: 2025-03-08 20:38:41
Exec Total Coverage
Lines: 259 274 94.5%
Functions: 10 10 100.0%
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 VLCElem aic_top_vlc[23590];
44 static const VLCElem *aic_mode1_vlc[AIC_MODE1_NUM], *aic_mode2_vlc[AIC_MODE2_NUM];
45 static const VLCElem *ptype_vlc[NUM_PTYPE_VLCS], *btype_vlc[NUM_BTYPE_VLCS];
46
47 190 static av_cold const VLCElem *rv40_init_table(VLCInitState *state, int nb_bits,
48 int nb_codes, const uint8_t (*tab)[2])
49 {
50 380 return ff_vlc_init_tables_from_lengths(state, nb_bits, nb_codes,
51 190 &tab[0][1], 2, &tab[0][0], 2, 1,
52 0, 0);
53 }
54
55 /**
56 * Initialize all tables.
57 */
58 2 static av_cold void rv40_init_tables(void)
59 {
60 2 VLCInitState state = VLC_INIT_STATE(aic_top_vlc);
61 int i;
62
63 2 rv40_init_table(&state, AIC_TOP_BITS, AIC_TOP_SIZE,
64 rv40_aic_top_vlc_tab);
65
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 182 for(i = 0; i < AIC_MODE1_NUM; i++){
66 // Every tenth VLC table is empty
67
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 180 if((i % 10) == 9) continue;
68 162 aic_mode1_vlc[i] =
69 162 rv40_init_table(&state, AIC_MODE1_BITS,
70 162 AIC_MODE1_SIZE, aic_mode1_vlc_tabs[i]);
71 }
72
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 42 for (unsigned i = 0; i < AIC_MODE2_NUM; i++){
73 uint16_t syms[AIC_MODE2_SIZE];
74
75
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 3280 for (int j = 0; j < AIC_MODE2_SIZE; j++) {
76 3240 int first = aic_mode2_vlc_syms[i][j] >> 4;
77 3240 int second = aic_mode2_vlc_syms[i][j] & 0xF;
78 if (HAVE_BIGENDIAN)
79 syms[j] = (first << 8) | second;
80 else
81 3240 syms[j] = first | (second << 8);
82 }
83 40 aic_mode2_vlc[i] =
84 40 ff_vlc_init_tables_from_lengths(&state, AIC_MODE2_BITS, AIC_MODE2_SIZE,
85 40 aic_mode2_vlc_bits[i], 1,
86 syms, 2, 2, 0, 0);
87 }
88
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 16 for(i = 0; i < NUM_PTYPE_VLCS; i++){
89 14 ptype_vlc[i] =
90 14 rv40_init_table(&state, PTYPE_VLC_BITS, PTYPE_VLC_SIZE,
91 14 ptype_vlc_tabs[i]);
92 }
93
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 14 for(i = 0; i < NUM_BTYPE_VLCS; i++){
94 12 btype_vlc[i] =
95 12 rv40_init_table(&state, BTYPE_VLC_BITS, BTYPE_VLC_SIZE,
96 12 btype_vlc_tabs[i]);
97 }
98 2 }
99
100 /**
101 * Get stored dimension from bitstream.
102 *
103 * If the width/height is the standard one then it's coded as a 3-bit index.
104 * Otherwise it is coded as escaped 8-bit portions.
105 */
106 112 static int get_dimension(GetBitContext *gb, const int *dim)
107 {
108 112 int t = get_bits(gb, 3);
109 112 int val = dim[t];
110
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 112 if(val < 0)
111 56 val = dim[get_bits1(gb) - val];
112
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 112 if(!val){
113 do{
114
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 112 if (get_bits_left(gb) < 8)
115 ✗ return AVERROR_INVALIDDATA;
116 112 t = get_bits(gb, 8);
117 112 val += t << 2;
118
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 112 }while(t == 0xFF);
119 }
120 112 return val;
121 }
122
123 /**
124 * Get encoded picture size - usually this is called from rv40_parse_slice_header.
125 */
126 56 static void rv40_parse_picture_size(GetBitContext *gb, int *w, int *h)
127 {
128 56 *w = get_dimension(gb, rv40_standard_widths);
129 56 *h = get_dimension(gb, rv40_standard_heights);
130 56 }
131
132 2076 static int rv40_parse_slice_header(RV34DecContext *r, GetBitContext *gb, SliceInfo *si)
133 {
134 2076 int w = r->s.width, h = r->s.height;
135 int mb_size;
136 int ret;
137
138 2076 memset(si, 0, sizeof(SliceInfo));
139
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 2076 if(get_bits1(gb))
140 ✗ return AVERROR_INVALIDDATA;
141 2076 si->type = get_bits(gb, 2);
142
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 2076 if(si->type == 1) si->type = 0;
143 2076 si->quant = get_bits(gb, 5);
144
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 2076 if(get_bits(gb, 2))
145 ✗ return AVERROR_INVALIDDATA;
146 2076 si->vlc_set = get_bits(gb, 2);
147 2076 skip_bits1(gb);
148 2076 si->pts = get_bits(gb, 13);
149
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 2076 if(!si->type || !get_bits1(gb))
150 56 rv40_parse_picture_size(gb, &w, &h);
151
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 2076 if ((ret = av_image_check_size(w, h, 0, r->s.avctx)) < 0)
152 ✗ return ret;
153 2076 si->width = w;
154 2076 si->height = h;
155 2076 mb_size = ((w + 15) >> 4) * ((h + 15) >> 4);
156 2076 si->start = ff_rv34_get_start_offset(gb, mb_size);
157
158 2076 return 0;
159 }
160
161 /**
162 * Decode 4x4 intra types array.
163 */
164 12390 static int rv40_decode_intra_types(RV34DecContext *r, GetBitContext *gb, int8_t *dst)
165 {
166 12390 MpegEncContext *s = &r->s;
167 int i, j, k, v;
168 int A, B, C;
169 int pattern;
170 int8_t *ptr;
171
172
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 61950 for(i = 0; i < 4; i++, dst += r->intra_types_stride){
173
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 49560 if(!i && s->first_slice_line){
174 4859 pattern = get_vlc2(gb, aic_top_vlc, AIC_TOP_BITS, 1);
175 4859 dst[0] = (pattern >> 2) & 2;
176 4859 dst[1] = (pattern >> 1) & 2;
177 4859 dst[2] = pattern & 2;
178 4859 dst[3] = (pattern << 1) & 2;
179 4859 continue;
180 }
181 44701 ptr = dst;
182
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 190876 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 146175 A = ptr[-r->intra_types_stride + 1]; // it won't be used for the last coefficient in a row
190 146175 B = ptr[-r->intra_types_stride];
191 146175 C = ptr[-1];
192 146175 pattern = A + B * (1 << 4) + C * (1 << 8);
193
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 2594727 for(k = 0; k < MODE2_PATTERNS_NUM; k++)
194
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 2482111 if(pattern == rv40_aic_table_index[k])
195 33559 break;
196
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 146175 if(j < 3 && k < MODE2_PATTERNS_NUM){ //pattern is found, decoding 2 coefficients
197 32629 AV_WN16(ptr, get_vlc2(gb, aic_mode2_vlc[k], AIC_MODE2_BITS, 2));
198 32629 ptr += 2;
199 32629 j++;
200 }else{
201
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 113546 if(B != -1 && C != -1)
202 111248 v = get_vlc2(gb, aic_mode1_vlc[B + C*10], AIC_MODE1_BITS, 1);
203 else{ // tricky decoding
204 2298 v = 0;
205
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 2298 switch(C){
206 2298 case -1: // code 0 -> 1, 1 -> 0
207
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 2298 if(B < 2)
208 2298 v = get_bits1(gb) ^ 1;
209 2298 break;
210 ✗ case 0:
211 case 2: // code 0 -> 2, 1 -> 0
212 ✗ v = (get_bits1(gb) ^ 1) << 1;
213 ✗ break;
214 }
215 }
216 113546 *ptr++ = v;
217 }
218 }
219 }
220 12390 return 0;
221 }
222
223 /**
224 * Decode macroblock information.
225 */
226 217440 static int rv40_decode_mb_info(RV34DecContext *r)
227 {
228 217440 MpegEncContext *s = &r->s;
229 217440 GetBitContext *gb = &s->gb;
230 int q, i;
231 217440 int prev_type = 0;
232 217440 int mb_pos = s->mb_x + s->mb_y * s->mb_stride;
233
234
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 217440 if(!r->s.mb_skip_run) {
235 80656 r->s.mb_skip_run = get_interleaved_ue_golomb(gb) + 1;
236
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 80656 if(r->s.mb_skip_run > (unsigned)s->mb_num)
237 ✗ return -1;
238 }
239
240
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 217440 if(--r->s.mb_skip_run)
241 137293 return RV34_MB_SKIP;
242
243
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 80147 if(r->avail_cache[6-4]){
244 61051 int blocks[RV34_MB_TYPES] = {0};
245 61051 int count = 0;
246
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 61051 if(r->avail_cache[6-1])
247 59166 blocks[r->mb_type[mb_pos - 1]]++;
248 61051 blocks[r->mb_type[mb_pos - s->mb_stride]]++;
249
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 61051 if(r->avail_cache[6-2])
250 59917 blocks[r->mb_type[mb_pos - s->mb_stride + 1]]++;
251
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 61051 if(r->avail_cache[6-5])
252 58857 blocks[r->mb_type[mb_pos - s->mb_stride - 1]]++;
253
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 362897 for(i = 0; i < RV34_MB_TYPES; i++){
254
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 359819 if(blocks[i] > count){
255 80843 count = blocks[i];
256 80843 prev_type = i;
257
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 80843 if(count>1)
258 57973 break;
259 }
260 }
261
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 19096 } else if (r->avail_cache[6-1])
262 18159 prev_type = r->mb_type[mb_pos - 1];
263
264
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 80147 if(s->pict_type == AV_PICTURE_TYPE_P){
265 26103 prev_type = block_num_to_ptype_vlc_num[prev_type];
266 26103 q = get_vlc2(gb, ptype_vlc[prev_type], PTYPE_VLC_BITS, 1);
267
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 26103 if(q < PBTYPE_ESCAPE)
268 26103 return q;
269 ✗ q = get_vlc2(gb, ptype_vlc[prev_type], PTYPE_VLC_BITS, 1);
270 ✗ av_log(s->avctx, AV_LOG_ERROR, "Dquant for P-frame\n");
271 }else{
272 54044 prev_type = block_num_to_btype_vlc_num[prev_type];
273 54044 q = get_vlc2(gb, btype_vlc[prev_type], BTYPE_VLC_BITS, 1);
274
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 54044 if(q < PBTYPE_ESCAPE)
275 54044 return q;
276 ✗ q = get_vlc2(gb, btype_vlc[prev_type], BTYPE_VLC_BITS, 1);
277 ✗ av_log(s->avctx, AV_LOG_ERROR, "Dquant for B-frame\n");
278 }
279 ✗ return 0;
280 }
281
282 enum RV40BlockPos{
283 POS_CUR,
284 POS_TOP,
285 POS_LEFT,
286 POS_BOTTOM,
287 };
288
289 #define MASK_CUR 0x0001
290 #define MASK_RIGHT 0x0008
291 #define MASK_BOTTOM 0x0010
292 #define MASK_TOP 0x1000
293 #define MASK_Y_TOP_ROW 0x000F
294 #define MASK_Y_LAST_ROW 0xF000
295 #define MASK_Y_LEFT_COL 0x1111
296 #define MASK_Y_RIGHT_COL 0x8888
297 #define MASK_C_TOP_ROW 0x0003
298 #define MASK_C_LAST_ROW 0x000C
299 #define MASK_C_LEFT_COL 0x0005
300 #define MASK_C_RIGHT_COL 0x000A
301
302 static const int neighbour_offs_x[4] = { 0, 0, -1, 0 };
303 static const int neighbour_offs_y[4] = { 0, -1, 0, 1 };
304
305 2330845 static void rv40_adaptive_loop_filter(RV34DSPContext *rdsp,
306 uint8_t *src, int stride, int dmode,
307 int lim_q1, int lim_p1,
308 int alpha, int beta, int beta2,
309 int chroma, int edge, int dir)
310 {
311 int filter_p1, filter_q1;
312 int strong;
313 int lims;
314
315 2330845 strong = rdsp->rv40_loop_filter_strength[dir](src, stride, beta, beta2,
316 edge, &filter_p1, &filter_q1);
317
318 2330845 lims = filter_p1 + filter_q1 + ((lim_q1 + lim_p1) >> 1) + 1;
319
320
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 2330845 if (strong) {
321 329538 rdsp->rv40_strong_loop_filter[dir](src, stride, alpha,
322 lims, dmode, chroma);
323
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 2001307 } else if (filter_p1 & filter_q1) {
324 1251915 rdsp->rv40_weak_loop_filter[dir](src, stride, 1, 1, alpha, beta,
325 lims, lim_q1, lim_p1);
326
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 749392 } else if (filter_p1 | filter_q1) {
327 241791 rdsp->rv40_weak_loop_filter[dir](src, stride, filter_p1, filter_q1,
328 alpha, beta, lims >> 1, lim_q1 >> 1,
329 lim_p1 >> 1);
330 }
331 2330845 }
332
333 /**
334 * RV40 loop filtering function
335 */
336 6140 static void rv40_loop_filter(RV34DecContext *r, int row)
337 {
338 6140 MpegEncContext *s = &r->s;
339 int mb_pos, mb_x;
340 int i, j, k;
341 uint8_t *Y, *C;
342 int alpha, beta, betaY, betaC;
343 int q;
344 int mbtype[4]; ///< current macroblock and its neighbours types
345 /**
346 * flags indicating that macroblock can be filtered with strong filter
347 * it is set only for intra coded MB and MB with DCs coded separately
348 */
349 int mb_strong[4];
350 int clip[4]; ///< MB filter clipping value calculated from filtering strength
351 /**
352 * coded block patterns for luma part of current macroblock and its neighbours
353 * Format:
354 * LSB corresponds to the top left block,
355 * each nibble represents one row of subblocks.
356 */
357 int cbp[4];
358 /**
359 * coded block patterns for chroma part of current macroblock and its neighbours
360 * Format is the same as for luma with two subblocks in a row.
361 */
362 int uvcbp[4][2];
363 /**
364 * This mask represents the pattern of luma subblocks that should be filtered
365 * in addition to the coded ones because they lie at the edge of
366 * 8x8 block with different enough motion vectors
367 */
368 unsigned mvmasks[4];
369
370 6140 mb_pos = row * s->mb_stride;
371
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 227180 for(mb_x = 0; mb_x < s->mb_width; mb_x++, mb_pos++){
372 221040 int mbtype = s->cur_pic.mb_type[mb_pos];
373
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 221040 if(IS_INTRA(mbtype) || IS_SEPARATE_DC(mbtype))
374 23450 r->cbp_luma [mb_pos] = r->deblock_coefs[mb_pos] = 0xFFFF;
375
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 221040 if(IS_INTRA(mbtype))
376 22901 r->cbp_chroma[mb_pos] = 0xFF;
377 }
378 6140 mb_pos = row * s->mb_stride;
379
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 227180 for(mb_x = 0; mb_x < s->mb_width; mb_x++, mb_pos++){
380 int y_h_deblock, y_v_deblock;
381 int c_v_deblock[2], c_h_deblock[2];
382 int clip_left;
383 int avail[4];
384 unsigned y_to_deblock;
385 int c_to_deblock[2];
386
387 221040 q = s->cur_pic.qscale_table[mb_pos];
388 221040 alpha = rv40_alpha_tab[q];
389 221040 beta = rv40_beta_tab [q];
390 221040 betaY = betaC = beta * 3;
391
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 221040 if(s->width * s->height <= 176*144)
392 ✗ betaY += beta;
393
394 221040 avail[0] = 1;
395 221040 avail[1] = row;
396 221040 avail[2] = mb_x;
397 221040 avail[3] = row < s->mb_height - 1;
398
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 1105200 for(i = 0; i < 4; i++){
399
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 884160 if(avail[i]){
400 855916 int pos = mb_pos + neighbour_offs_x[i] + neighbour_offs_y[i]*s->mb_stride;
401 855916 mvmasks[i] = r->deblock_coefs[pos];
402 855916 mbtype [i] = s->cur_pic.mb_type[pos];
403 855916 cbp [i] = r->cbp_luma[pos];
404 855916 uvcbp[i][0] = r->cbp_chroma[pos] & 0xF;
405 855916 uvcbp[i][1] = r->cbp_chroma[pos] >> 4;
406 }else{
407 28244 mvmasks[i] = 0;
408 28244 mbtype [i] = mbtype[0];
409 28244 cbp [i] = 0;
410 28244 uvcbp[i][0] = uvcbp[i][1] = 0;
411 }
412
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 884160 mb_strong[i] = IS_INTRA(mbtype[i]) || IS_SEPARATE_DC(mbtype[i]);
413 884160 clip[i] = rv40_filter_clip_tbl[mb_strong[i] + 1][q];
414 }
415 221040 y_to_deblock = mvmasks[POS_CUR]
416 221040 | (mvmasks[POS_BOTTOM] << 16);
417 /* This pattern contains bits signalling that horizontal edges of
418 * the current block can be filtered.
419 * That happens when either of adjacent subblocks is coded or lies on
420 * the edge of 8x8 blocks with motion vectors differing by more than
421 * 3/4 pel in any component (any edge orientation for some reason).
422 */
423 221040 y_h_deblock = y_to_deblock
424 221040 | ((cbp[POS_CUR] << 4) & ~MASK_Y_TOP_ROW)
425 221040 | ((cbp[POS_TOP] & MASK_Y_LAST_ROW) >> 12);
426 /* This pattern contains bits signalling that vertical edges of
427 * the current block can be filtered.
428 * That happens when either of adjacent subblocks is coded or lies on
429 * the edge of 8x8 blocks with motion vectors differing by more than
430 * 3/4 pel in any component (any edge orientation for some reason).
431 */
432 221040 y_v_deblock = y_to_deblock
433 221040 | ((cbp[POS_CUR] << 1) & ~MASK_Y_LEFT_COL)
434 221040 | ((cbp[POS_LEFT] & MASK_Y_RIGHT_COL) >> 3);
435
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 221040 if(!mb_x)
436 6140 y_v_deblock &= ~MASK_Y_LEFT_COL;
437
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 221040 if(!row)
438 11052 y_h_deblock &= ~MASK_Y_TOP_ROW;
439
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 221040 if(row == s->mb_height - 1 || (mb_strong[POS_CUR] | mb_strong[POS_BOTTOM]))
440 44284 y_h_deblock &= ~(MASK_Y_TOP_ROW << 16);
441 /* Calculating chroma patterns is similar and easier since there is
442 * no motion vector pattern for them.
443 */
444
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 663120 for(i = 0; i < 2; i++){
445 442080 c_to_deblock[i] = (uvcbp[POS_BOTTOM][i] << 4) | uvcbp[POS_CUR][i];
446 442080 c_v_deblock[i] = c_to_deblock[i]
447 442080 | ((uvcbp[POS_CUR] [i] << 1) & ~MASK_C_LEFT_COL)
448 442080 | ((uvcbp[POS_LEFT][i] & MASK_C_RIGHT_COL) >> 1);
449 442080 c_h_deblock[i] = c_to_deblock[i]
450 442080 | ((uvcbp[POS_TOP][i] & MASK_C_LAST_ROW) >> 2)
451 442080 | (uvcbp[POS_CUR][i] << 2);
452
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 442080 if(!mb_x)
453 12280 c_v_deblock[i] &= ~MASK_C_LEFT_COL;
454
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 442080 if(!row)
455 22104 c_h_deblock[i] &= ~MASK_C_TOP_ROW;
456
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 442080 if(row == s->mb_height - 1 || (mb_strong[POS_CUR] | mb_strong[POS_BOTTOM]))
457 88568 c_h_deblock[i] &= ~(MASK_C_TOP_ROW << 4);
458 }
459
460
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 1105200 for(j = 0; j < 16; j += 4){
461 884160 Y = s->cur_pic.data[0] + mb_x*16 + (row*16 + j) * s->linesize;
462
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 4420800 for(i = 0; i < 4; i++, Y += 4){
463 3536640 int ij = i + j;
464
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 3536640 int clip_cur = y_to_deblock & (MASK_CUR << ij) ? clip[POS_CUR] : 0;
465
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 3536640 int dither = j ? ij : i*4;
466
467 // if bottom block is coded then we can filter its top edge
468 // (or bottom edge of this block, which is the same)
469
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 3536640 if(y_h_deblock & (MASK_BOTTOM << ij)){
470 711124 rv40_adaptive_loop_filter(&r->rdsp, Y+4*s->linesize,
471 711124 s->linesize, dither,
472
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 711124 y_to_deblock & (MASK_BOTTOM << ij) ? clip[POS_CUR] : 0,
473 clip_cur, alpha, beta, betaY,
474 0, 0, 0);
475 }
476 // filter left block edge in ordinary mode (with low filtering strength)
477
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 3536640 if(y_v_deblock & (MASK_CUR << ij) && (i || !(mb_strong[POS_CUR] | mb_strong[POS_LEFT]))){
478
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 708746 if(!i)
479
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 141800 clip_left = mvmasks[POS_LEFT] & (MASK_RIGHT << j) ? clip[POS_LEFT] : 0;
480 else
481
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 566946 clip_left = y_to_deblock & (MASK_CUR << (ij-1)) ? clip[POS_CUR] : 0;
482 708746 rv40_adaptive_loop_filter(&r->rdsp, Y, s->linesize, dither,
483 clip_cur,
484 clip_left,
485 alpha, beta, betaY, 0, 0, 1);
486 }
487 // filter top edge of the current macroblock when filtering strength is high
488
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 3536640 if(!j && y_h_deblock & (MASK_CUR << i) && (mb_strong[POS_CUR] | mb_strong[POS_TOP])){
489 132928 rv40_adaptive_loop_filter(&r->rdsp, Y, s->linesize, dither,
490 clip_cur,
491
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 132928 mvmasks[POS_TOP] & (MASK_TOP << i) ? clip[POS_TOP] : 0,
492 alpha, beta, betaY, 0, 1, 0);
493 }
494 // filter left block edge in edge mode (with high filtering strength)
495
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 3536640 if(y_v_deblock & (MASK_CUR << ij) && !i && (mb_strong[POS_CUR] | mb_strong[POS_LEFT])){
496
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 121952 clip_left = mvmasks[POS_LEFT] & (MASK_RIGHT << j) ? clip[POS_LEFT] : 0;
497 121952 rv40_adaptive_loop_filter(&r->rdsp, Y, s->linesize, dither,
498 clip_cur,
499 clip_left,
500 alpha, beta, betaY, 0, 1, 1);
501 }
502 }
503 }
504
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 663120 for(k = 0; k < 2; k++){
505
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 1326240 for(j = 0; j < 2; j++){
506 884160 C = s->cur_pic.data[k + 1] + mb_x*8 + (row*8 + j*4) * s->uvlinesize;
507
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 2652480 for(i = 0; i < 2; i++, C += 4){
508 1768320 int ij = i + j*2;
509
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 1768320 int clip_cur = c_to_deblock[k] & (MASK_CUR << ij) ? clip[POS_CUR] : 0;
510
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 1768320 if(c_h_deblock[k] & (MASK_CUR << (ij+2))){
511
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 203686 int clip_bot = c_to_deblock[k] & (MASK_CUR << (ij+2)) ? clip[POS_CUR] : 0;
512 203686 rv40_adaptive_loop_filter(&r->rdsp, C+4*s->uvlinesize, s->uvlinesize, i*8,
513 clip_bot,
514 clip_cur,
515 alpha, beta, betaC, 1, 0, 0);
516 }
517
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 1768320 if((c_v_deblock[k] & (MASK_CUR << ij)) && (i || !(mb_strong[POS_CUR] | mb_strong[POS_LEFT]))){
518
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 201563 if(!i)
519
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 48990 clip_left = uvcbp[POS_LEFT][k] & (MASK_CUR << (2*j+1)) ? clip[POS_LEFT] : 0;
520 else
521
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 152573 clip_left = c_to_deblock[k] & (MASK_CUR << (ij-1)) ? clip[POS_CUR] : 0;
522 201563 rv40_adaptive_loop_filter(&r->rdsp, C, s->uvlinesize, j*8,
523 clip_cur,
524 clip_left,
525 alpha, beta, betaC, 1, 0, 1);
526 }
527
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 1768320 if(!j && c_h_deblock[k] & (MASK_CUR << ij) && (mb_strong[POS_CUR] | mb_strong[POS_TOP])){
528
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 130789 int clip_top = uvcbp[POS_TOP][k] & (MASK_CUR << (ij+2)) ? clip[POS_TOP] : 0;
529 130789 rv40_adaptive_loop_filter(&r->rdsp, C, s->uvlinesize, i*8,
530 clip_cur,
531 clip_top,
532 alpha, beta, betaC, 1, 1, 0);
533 }
534
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 1768320 if(c_v_deblock[k] & (MASK_CUR << ij) && !i && (mb_strong[POS_CUR] | mb_strong[POS_LEFT])){
535
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 120057 clip_left = uvcbp[POS_LEFT][k] & (MASK_CUR << (2*j+1)) ? clip[POS_LEFT] : 0;
536 120057 rv40_adaptive_loop_filter(&r->rdsp, C, s->uvlinesize, j*8,
537 clip_cur,
538 clip_left,
539 alpha, beta, betaC, 1, 1, 1);
540 }
541 }
542 }
543 }
544 }
545 6140 }
546
547 /**
548 * Initialize decoder.
549 */
550 4 static av_cold int rv40_decode_init(AVCodecContext *avctx)
551 {
552 static AVOnce init_static_once = AV_ONCE_INIT;
553 4 RV34DecContext *r = avctx->priv_data;
554 int ret;
555
556 4 r->rv30 = 0;
557
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 4 if ((ret = ff_rv34_decode_init(avctx)) < 0)
558 ✗ return ret;
559 4 r->parse_slice_header = rv40_parse_slice_header;
560 4 r->decode_intra_types = rv40_decode_intra_types;
561 4 r->decode_mb_info = rv40_decode_mb_info;
562 4 r->loop_filter = rv40_loop_filter;
563 4 r->luma_dc_quant_i = rv40_luma_dc_quant[0];
564 4 r->luma_dc_quant_p = rv40_luma_dc_quant[1];
565 4 ff_rv40dsp_init(&r->rdsp);
566 4 ff_thread_once(&init_static_once, rv40_init_tables);
567 4 return 0;
568 }
569
570 const FFCodec ff_rv40_decoder = {
571 .p.name = "rv40",
572 CODEC_LONG_NAME("RealVideo 4.0"),
573 .p.type = AVMEDIA_TYPE_VIDEO,
574 .p.id = AV_CODEC_ID_RV40,
575 .priv_data_size = sizeof(RV34DecContext),
576 .init = rv40_decode_init,
577 .close = ff_rv34_decode_end,
578 FF_CODEC_DECODE_CB(ff_rv34_decode_frame),
579 .p.capabilities = AV_CODEC_CAP_DR1 | AV_CODEC_CAP_DELAY |
580 AV_CODEC_CAP_FRAME_THREADS,
581 .caps_internal = FF_CODEC_CAP_INIT_CLEANUP,
582 .flush = ff_mpeg_flush,
583 UPDATE_THREAD_CONTEXT(ff_rv34_decode_update_thread_context),
584 };
585