FFmpeg coverage


Directory: ../../../ffmpeg/
File: src/libavcodec/rv40.c
Date: 2021-09-23 20:34:37
Exec Total Coverage
Lines: 264 279 94.6%
Branches: 198 213 93.0%

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
31 #include "avcodec.h"
32 #include "mpegutils.h"
33 #include "mpegvideo.h"
34 #include "golomb.h"
35
36 #include "rv34.h"
37 #include "rv40vlc2.h"
38 #include "rv40data.h"
39
40 static VLC aic_top_vlc;
41 static VLC aic_mode1_vlc[AIC_MODE1_NUM], aic_mode2_vlc[AIC_MODE2_NUM];
42 static VLC ptype_vlc[NUM_PTYPE_VLCS], btype_vlc[NUM_BTYPE_VLCS];
43
44 190 static av_cold void rv40_init_table(VLC *vlc, unsigned *offset, int nb_bits,
45 int nb_codes, const uint8_t (*tab)[2])
46 {
47 static VLC_TYPE vlc_buf[11776][2];
48
49 190 vlc->table = &vlc_buf[*offset];
50 190 vlc->table_allocated = 1 << nb_bits;
51 190 *offset += 1 << nb_bits;
52
53 190 ff_init_vlc_from_lengths(vlc, nb_bits, nb_codes,
54 190 &tab[0][1], 2, &tab[0][0], 2, 1,
55 0, INIT_VLC_USE_NEW_STATIC, NULL);
56 190 }
57
58 /**
59 * Initialize all tables.
60 */
61 2 static av_cold void rv40_init_tables(void)
62 {
63 2 int i, offset = 0;
64 static VLC_TYPE aic_mode2_table[11814][2];
65
66 2 rv40_init_table(&aic_top_vlc, &offset, AIC_TOP_BITS, AIC_TOP_SIZE,
67 rv40_aic_top_vlc_tab);
68
2/2
✓ Branch 0 taken 180 times.
✓ Branch 1 taken 2 times.
182 for(i = 0; i < AIC_MODE1_NUM; i++){
69 // Every tenth VLC table is empty
70
2/2
✓ Branch 0 taken 18 times.
✓ Branch 1 taken 162 times.
180 if((i % 10) == 9) continue;
71 162 rv40_init_table(&aic_mode1_vlc[i], &offset, AIC_MODE1_BITS,
72 162 AIC_MODE1_SIZE, aic_mode1_vlc_tabs[i]);
73 }
74
2/2
✓ Branch 0 taken 40 times.
✓ Branch 1 taken 2 times.
42 for (unsigned i = 0, offset = 0; i < AIC_MODE2_NUM; i++){
75 uint16_t syms[AIC_MODE2_SIZE];
76
77
2/2
✓ Branch 0 taken 3240 times.
✓ Branch 1 taken 40 times.
3280 for (int j = 0; j < AIC_MODE2_SIZE; j++) {
78 3240 int first = aic_mode2_vlc_syms[i][j] >> 4;
79 3240 int second = aic_mode2_vlc_syms[i][j] & 0xF;
80 if (HAVE_BIGENDIAN)
81 syms[j] = (first << 8) | second;
82 else
83 3240 syms[j] = first | (second << 8);
84 }
85 40 aic_mode2_vlc[i].table = &aic_mode2_table[offset];
86 40 aic_mode2_vlc[i].table_allocated = FF_ARRAY_ELEMS(aic_mode2_table) - offset;
87 40 ff_init_vlc_from_lengths(&aic_mode2_vlc[i], AIC_MODE2_BITS, AIC_MODE2_SIZE,
88 40 aic_mode2_vlc_bits[i], 1,
89 syms, 2, 2, 0, INIT_VLC_STATIC_OVERLONG, NULL);
90 40 offset += aic_mode2_vlc[i].table_size;
91 }
92
2/2
✓ Branch 0 taken 14 times.
✓ Branch 1 taken 2 times.
16 for(i = 0; i < NUM_PTYPE_VLCS; i++){
93 14 rv40_init_table(&ptype_vlc[i], &offset, PTYPE_VLC_BITS, PTYPE_VLC_SIZE,
94 14 ptype_vlc_tabs[i]);
95 }
96
2/2
✓ Branch 0 taken 12 times.
✓ Branch 1 taken 2 times.
14 for(i = 0; i < NUM_BTYPE_VLCS; i++){
97 12 rv40_init_table(&btype_vlc[i], &offset, BTYPE_VLC_BITS, BTYPE_VLC_SIZE,
98 12 btype_vlc_tabs[i]);
99 }
100 2 }
101
102 /**
103 * Get stored dimension from bitstream.
104 *
105 * If the width/height is the standard one then it's coded as a 3-bit index.
106 * Otherwise it is coded as escaped 8-bit portions.
107 */
108 112 static int get_dimension(GetBitContext *gb, const int *dim)
109 {
110 112 int t = get_bits(gb, 3);
111 112 int val = dim[t];
112
2/2
✓ Branch 0 taken 56 times.
✓ Branch 1 taken 56 times.
112 if(val < 0)
113 56 val = dim[get_bits1(gb) - val];
114
1/2
✓ Branch 0 taken 112 times.
✗ Branch 1 not taken.
112 if(!val){
115 do{
116
1/2
✗ Branch 1 not taken.
✓ Branch 2 taken 112 times.
112 if (get_bits_left(gb) < 8)
117 return AVERROR_INVALIDDATA;
118 112 t = get_bits(gb, 8);
119 112 val += t << 2;
120
1/2
✗ Branch 0 not taken.
✓ Branch 1 taken 112 times.
112 }while(t == 0xFF);
121 }
122 112 return val;
123 }
124
125 /**
126 * Get encoded picture size - usually this is called from rv40_parse_slice_header.
127 */
128 56 static void rv40_parse_picture_size(GetBitContext *gb, int *w, int *h)
129 {
130 56 *w = get_dimension(gb, rv40_standard_widths);
131 56 *h = get_dimension(gb, rv40_standard_heights);
132 56 }
133
134 2064 static int rv40_parse_slice_header(RV34DecContext *r, GetBitContext *gb, SliceInfo *si)
135 {
136 int mb_bits;
137 2064 int w = r->s.width, h = r->s.height;
138 int mb_size;
139 int ret;
140
141 2064 memset(si, 0, sizeof(SliceInfo));
142
1/2
✗ Branch 1 not taken.
✓ Branch 2 taken 2064 times.
2064 if(get_bits1(gb))
143 return AVERROR_INVALIDDATA;
144 2064 si->type = get_bits(gb, 2);
145
2/2
✓ Branch 0 taken 24 times.
✓ Branch 1 taken 2040 times.
2064 if(si->type == 1) si->type = 0;
146 2064 si->quant = get_bits(gb, 5);
147
1/2
✗ Branch 1 not taken.
✓ Branch 2 taken 2064 times.
2064 if(get_bits(gb, 2))
148 return AVERROR_INVALIDDATA;
149 2064 si->vlc_set = get_bits(gb, 2);
150 2064 skip_bits1(gb);
151 2064 si->pts = get_bits(gb, 13);
152
4/4
✓ Branch 0 taken 2024 times.
✓ Branch 1 taken 40 times.
✓ Branch 3 taken 16 times.
✓ Branch 4 taken 2008 times.
2064 if(!si->type || !get_bits1(gb))
153 56 rv40_parse_picture_size(gb, &w, &h);
154
1/2
✗ Branch 1 not taken.
✓ Branch 2 taken 2064 times.
2064 if ((ret = av_image_check_size(w, h, 0, r->s.avctx)) < 0)
155 return ret;
156 2064 si->width = w;
157 2064 si->height = h;
158 2064 mb_size = ((w + 15) >> 4) * ((h + 15) >> 4);
159 2064 mb_bits = ff_rv34_get_start_offset(gb, mb_size);
160 2064 si->start = get_bits(gb, mb_bits);
161
162 2064 return 0;
163 }
164
165 /**
166 * Decode 4x4 intra types array.
167 */
168 12372 static int rv40_decode_intra_types(RV34DecContext *r, GetBitContext *gb, int8_t *dst)
169 {
170 12372 MpegEncContext *s = &r->s;
171 int i, j, k, v;
172 int A, B, C;
173 int pattern;
174 int8_t *ptr;
175
176
2/2
✓ Branch 0 taken 49488 times.
✓ Branch 1 taken 12372 times.
61860 for(i = 0; i < 4; i++, dst += r->intra_types_stride){
177
4/4
✓ Branch 0 taken 12372 times.
✓ Branch 1 taken 37116 times.
✓ Branch 2 taken 4856 times.
✓ Branch 3 taken 7516 times.
49488 if(!i && s->first_slice_line){
178 4856 pattern = get_vlc2(gb, aic_top_vlc.table, AIC_TOP_BITS, 1);
179 4856 dst[0] = (pattern >> 2) & 2;
180 4856 dst[1] = (pattern >> 1) & 2;
181 4856 dst[2] = pattern & 2;
182 4856 dst[3] = (pattern << 1) & 2;
183 4856 continue;
184 }
185 44632 ptr = dst;
186
2/2
✓ Branch 0 taken 146024 times.
✓ Branch 1 taken 44632 times.
190656 for(j = 0; j < 4; j++){
187 /* Coefficients are read using VLC chosen by the prediction pattern
188 * The first one (used for retrieving a pair of coefficients) is
189 * constructed from the top, top right and left coefficients
190 * The second one (used for retrieving only one coefficient) is
191 * top + 10 * left.
192 */
193 146024 A = ptr[-r->intra_types_stride + 1]; // it won't be used for the last coefficient in a row
194 146024 B = ptr[-r->intra_types_stride];
195 146024 C = ptr[-1];
196 146024 pattern = A + B * (1 << 4) + C * (1 << 8);
197
2/2
✓ Branch 0 taken 2480499 times.
✓ Branch 1 taken 112590 times.
2593089 for(k = 0; k < MODE2_PATTERNS_NUM; k++)
198
2/2
✓ Branch 0 taken 33434 times.
✓ Branch 1 taken 2447065 times.
2480499 if(pattern == rv40_aic_table_index[k])
199 33434 break;
200
4/4
✓ Branch 0 taken 113838 times.
✓ Branch 1 taken 32186 times.
✓ Branch 2 taken 32504 times.
✓ Branch 3 taken 81334 times.
146024 if(j < 3 && k < MODE2_PATTERNS_NUM){ //pattern is found, decoding 2 coefficients
201 32504 AV_WN16(ptr, get_vlc2(gb, aic_mode2_vlc[k].table, AIC_MODE2_BITS, 2));
202 32504 ptr += 2;
203 32504 j++;
204 }else{
205
3/4
✓ Branch 0 taken 113520 times.
✗ Branch 1 not taken.
✓ Branch 2 taken 111222 times.
✓ Branch 3 taken 2298 times.
113520 if(B != -1 && C != -1)
206 111222 v = get_vlc2(gb, aic_mode1_vlc[B + C*10].table, AIC_MODE1_BITS, 1);
207 else{ // tricky decoding
208 2298 v = 0;
209
1/3
✓ Branch 0 taken 2298 times.
✗ Branch 1 not taken.
✗ Branch 2 not taken.
2298 switch(C){
210 2298 case -1: // code 0 -> 1, 1 -> 0
211
1/2
✓ Branch 0 taken 2298 times.
✗ Branch 1 not taken.
2298 if(B < 2)
212 2298 v = get_bits1(gb) ^ 1;
213 2298 break;
214 case 0:
215 case 2: // code 0 -> 2, 1 -> 0
216 v = (get_bits1(gb) ^ 1) << 1;
217 break;
218 }
219 }
220 113520 *ptr++ = v;
221 }
222 }
223 }
224 12372 return 0;
225 }
226
227 /**
228 * Decode macroblock information.
229 */
230 216000 static int rv40_decode_mb_info(RV34DecContext *r)
231 {
232 216000 MpegEncContext *s = &r->s;
233 216000 GetBitContext *gb = &s->gb;
234 int q, i;
235 216000 int prev_type = 0;
236 216000 int mb_pos = s->mb_x + s->mb_y * s->mb_stride;
237
238
2/2
✓ Branch 0 taken 80045 times.
✓ Branch 1 taken 135955 times.
216000 if(!r->s.mb_skip_run) {
239 80045 r->s.mb_skip_run = get_interleaved_ue_golomb(gb) + 1;
240
1/2
✗ Branch 0 not taken.
✓ Branch 1 taken 80045 times.
80045 if(r->s.mb_skip_run > (unsigned)s->mb_num)
241 return -1;
242 }
243
244
2/2
✓ Branch 0 taken 136461 times.
✓ Branch 1 taken 79539 times.
216000 if(--r->s.mb_skip_run)
245 136461 return RV34_MB_SKIP;
246
247
2/2
✓ Branch 0 taken 60557 times.
✓ Branch 1 taken 18982 times.
79539 if(r->avail_cache[6-4]){
248 60557 int blocks[RV34_MB_TYPES] = {0};
249 60557 int count = 0;
250
2/2
✓ Branch 0 taken 58685 times.
✓ Branch 1 taken 1872 times.
60557 if(r->avail_cache[6-1])
251 58685 blocks[r->mb_type[mb_pos - 1]]++;
252 60557 blocks[r->mb_type[mb_pos - s->mb_stride]]++;
253
2/2
✓ Branch 0 taken 59440 times.
✓ Branch 1 taken 1117 times.
60557 if(r->avail_cache[6-2])
254 59440 blocks[r->mb_type[mb_pos - s->mb_stride + 1]]++;
255
2/2
✓ Branch 0 taken 58378 times.
✓ Branch 1 taken 2179 times.
60557 if(r->avail_cache[6-5])
256 58378 blocks[r->mb_type[mb_pos - s->mb_stride - 1]]++;
257
2/2
✓ Branch 0 taken 357222 times.
✓ Branch 1 taken 3060 times.
360282 for(i = 0; i < RV34_MB_TYPES; i++){
258
2/2
✓ Branch 0 taken 80201 times.
✓ Branch 1 taken 277021 times.
357222 if(blocks[i] > count){
259 80201 count = blocks[i];
260 80201 prev_type = i;
261
2/2
✓ Branch 0 taken 57497 times.
✓ Branch 1 taken 22704 times.
80201 if(count>1)
262 57497 break;
263 }
264 }
265
2/2
✓ Branch 0 taken 18051 times.
✓ Branch 1 taken 931 times.
18982 } else if (r->avail_cache[6-1])
266 18051 prev_type = r->mb_type[mb_pos - 1];
267
268
2/2
✓ Branch 0 taken 25793 times.
✓ Branch 1 taken 53746 times.
79539 if(s->pict_type == AV_PICTURE_TYPE_P){
269 25793 prev_type = block_num_to_ptype_vlc_num[prev_type];
270 25793 q = get_vlc2(gb, ptype_vlc[prev_type].table, PTYPE_VLC_BITS, 1);
271
1/2
✓ Branch 0 taken 25793 times.
✗ Branch 1 not taken.
25793 if(q < PBTYPE_ESCAPE)
272 25793 return q;
273 q = get_vlc2(gb, ptype_vlc[prev_type].table, PTYPE_VLC_BITS, 1);
274 av_log(s->avctx, AV_LOG_ERROR, "Dquant for P-frame\n");
275 }else{
276 53746 prev_type = block_num_to_btype_vlc_num[prev_type];
277 53746 q = get_vlc2(gb, btype_vlc[prev_type].table, BTYPE_VLC_BITS, 1);
278
1/2
✓ Branch 0 taken 53746 times.
✗ Branch 1 not taken.
53746 if(q < PBTYPE_ESCAPE)
279 53746 return q;
280 q = get_vlc2(gb, btype_vlc[prev_type].table, BTYPE_VLC_BITS, 1);
281 av_log(s->avctx, AV_LOG_ERROR, "Dquant for B-frame\n");
282 }
283 return 0;
284 }
285
286 enum RV40BlockPos{
287 POS_CUR,
288 POS_TOP,
289 POS_LEFT,
290 POS_BOTTOM,
291 };
292
293 #define MASK_CUR 0x0001
294 #define MASK_RIGHT 0x0008
295 #define MASK_BOTTOM 0x0010
296 #define MASK_TOP 0x1000
297 #define MASK_Y_TOP_ROW 0x000F
298 #define MASK_Y_LAST_ROW 0xF000
299 #define MASK_Y_LEFT_COL 0x1111
300 #define MASK_Y_RIGHT_COL 0x8888
301 #define MASK_C_TOP_ROW 0x0003
302 #define MASK_C_LAST_ROW 0x000C
303 #define MASK_C_LEFT_COL 0x0005
304 #define MASK_C_RIGHT_COL 0x000A
305
306 static const int neighbour_offs_x[4] = { 0, 0, -1, 0 };
307 static const int neighbour_offs_y[4] = { 0, -1, 0, 1 };
308
309 2315053 static void rv40_adaptive_loop_filter(RV34DSPContext *rdsp,
310 uint8_t *src, int stride, int dmode,
311 int lim_q1, int lim_p1,
312 int alpha, int beta, int beta2,
313 int chroma, int edge, int dir)
314 {
315 int filter_p1, filter_q1;
316 int strong;
317 int lims;
318
319 2315053 strong = rdsp->rv40_loop_filter_strength[dir](src, stride, beta, beta2,
320 edge, &filter_p1, &filter_q1);
321
322 2315053 lims = filter_p1 + filter_q1 + ((lim_q1 + lim_p1) >> 1) + 1;
323
324
2/2
✓ Branch 0 taken 328913 times.
✓ Branch 1 taken 1986140 times.
2315053 if (strong) {
325 328913 rdsp->rv40_strong_loop_filter[dir](src, stride, alpha,
326 lims, dmode, chroma);
327
2/2
✓ Branch 0 taken 1247984 times.
✓ Branch 1 taken 738156 times.
1986140 } else if (filter_p1 & filter_q1) {
328 1247984 rdsp->rv40_weak_loop_filter[dir](src, stride, 1, 1, alpha, beta,
329 lims, lim_q1, lim_p1);
330
2/2
✓ Branch 0 taken 240995 times.
✓ Branch 1 taken 497161 times.
738156 } else if (filter_p1 | filter_q1) {
331 240995 rdsp->rv40_weak_loop_filter[dir](src, stride, filter_p1, filter_q1,
332 alpha, beta, lims >> 1, lim_q1 >> 1,
333 lim_p1 >> 1);
334 }
335 2315053 }
336
337 /**
338 * RV40 loop filtering function
339 */
340 6100 static void rv40_loop_filter(RV34DecContext *r, int row)
341 {
342 6100 MpegEncContext *s = &r->s;
343 int mb_pos, mb_x;
344 int i, j, k;
345 uint8_t *Y, *C;
346 int alpha, beta, betaY, betaC;
347 int q;
348 int mbtype[4]; ///< current macroblock and its neighbours types
349 /**
350 * flags indicating that macroblock can be filtered with strong filter
351 * it is set only for intra coded MB and MB with DCs coded separately
352 */
353 int mb_strong[4];
354 int clip[4]; ///< MB filter clipping value calculated from filtering strength
355 /**
356 * coded block patterns for luma part of current macroblock and its neighbours
357 * Format:
358 * LSB corresponds to the top left block,
359 * each nibble represents one row of subblocks.
360 */
361 int cbp[4];
362 /**
363 * coded block patterns for chroma part of current macroblock and its neighbours
364 * Format is the same as for luma with two subblocks in a row.
365 */
366 int uvcbp[4][2];
367 /**
368 * This mask represents the pattern of luma subblocks that should be filtered
369 * in addition to the coded ones because they lie at the edge of
370 * 8x8 block with different enough motion vectors
371 */
372 unsigned mvmasks[4];
373
374 6100 mb_pos = row * s->mb_stride;
375
2/2
✓ Branch 0 taken 219600 times.
✓ Branch 1 taken 6100 times.
225700 for(mb_x = 0; mb_x < s->mb_width; mb_x++, mb_pos++){
376 219600 int mbtype = s->current_picture_ptr->mb_type[mb_pos];
377
4/4
✓ Branch 0 taken 196789 times.
✓ Branch 1 taken 22811 times.
✓ Branch 2 taken 547 times.
✓ Branch 3 taken 196242 times.
219600 if(IS_INTRA(mbtype) || IS_SEPARATE_DC(mbtype))
378 23358 r->cbp_luma [mb_pos] = r->deblock_coefs[mb_pos] = 0xFFFF;
379
2/2
✓ Branch 0 taken 22811 times.
✓ Branch 1 taken 196789 times.
219600 if(IS_INTRA(mbtype))
380 22811 r->cbp_chroma[mb_pos] = 0xFF;
381 }
382 6100 mb_pos = row * s->mb_stride;
383
2/2
✓ Branch 0 taken 219600 times.
✓ Branch 1 taken 6100 times.
225700 for(mb_x = 0; mb_x < s->mb_width; mb_x++, mb_pos++){
384 int y_h_deblock, y_v_deblock;
385 int c_v_deblock[2], c_h_deblock[2];
386 int clip_left;
387 int avail[4];
388 unsigned y_to_deblock;
389 int c_to_deblock[2];
390
391 219600 q = s->current_picture_ptr->qscale_table[mb_pos];
392 219600 alpha = rv40_alpha_tab[q];
393 219600 beta = rv40_beta_tab [q];
394 219600 betaY = betaC = beta * 3;
395
1/2
✗ Branch 0 not taken.
✓ Branch 1 taken 219600 times.
219600 if(s->width * s->height <= 176*144)
396 betaY += beta;
397
398 219600 avail[0] = 1;
399 219600 avail[1] = row;
400 219600 avail[2] = mb_x;
401 219600 avail[3] = row < s->mb_height - 1;
402
2/2
✓ Branch 0 taken 878400 times.
✓ Branch 1 taken 219600 times.
1098000 for(i = 0; i < 4; i++){
403
2/2
✓ Branch 0 taken 850340 times.
✓ Branch 1 taken 28060 times.
878400 if(avail[i]){
404 850340 int pos = mb_pos + neighbour_offs_x[i] + neighbour_offs_y[i]*s->mb_stride;
405 850340 mvmasks[i] = r->deblock_coefs[pos];
406 850340 mbtype [i] = s->current_picture_ptr->mb_type[pos];
407 850340 cbp [i] = r->cbp_luma[pos];
408 850340 uvcbp[i][0] = r->cbp_chroma[pos] & 0xF;
409 850340 uvcbp[i][1] = r->cbp_chroma[pos] >> 4;
410 }else{
411 28060 mvmasks[i] = 0;
412 28060 mbtype [i] = mbtype[0];
413 28060 cbp [i] = 0;
414 28060 uvcbp[i][0] = uvcbp[i][1] = 0;
415 }
416
4/4
✓ Branch 0 taken 786842 times.
✓ Branch 1 taken 91558 times.
✓ Branch 2 taken 2213 times.
✓ Branch 3 taken 784629 times.
878400 mb_strong[i] = IS_INTRA(mbtype[i]) || IS_SEPARATE_DC(mbtype[i]);
417 878400 clip[i] = rv40_filter_clip_tbl[mb_strong[i] + 1][q];
418 }
419 219600 y_to_deblock = mvmasks[POS_CUR]
420 219600 | (mvmasks[POS_BOTTOM] << 16);
421 /* This pattern contains bits signalling that horizontal edges of
422 * the current block can be filtered.
423 * That happens when either of adjacent subblocks is coded or lies on
424 * the edge of 8x8 blocks with motion vectors differing by more than
425 * 3/4 pel in any component (any edge orientation for some reason).
426 */
427 219600 y_h_deblock = y_to_deblock
428 219600 | ((cbp[POS_CUR] << 4) & ~MASK_Y_TOP_ROW)
429 219600 | ((cbp[POS_TOP] & MASK_Y_LAST_ROW) >> 12);
430 /* This pattern contains bits signalling that vertical edges of
431 * the current block can be filtered.
432 * That happens when either of adjacent subblocks is coded or lies on
433 * the edge of 8x8 blocks with motion vectors differing by more than
434 * 3/4 pel in any component (any edge orientation for some reason).
435 */
436 219600 y_v_deblock = y_to_deblock
437 219600 | ((cbp[POS_CUR] << 1) & ~MASK_Y_LEFT_COL)
438 219600 | ((cbp[POS_LEFT] & MASK_Y_RIGHT_COL) >> 3);
439
2/2
✓ Branch 0 taken 6100 times.
✓ Branch 1 taken 213500 times.
219600 if(!mb_x)
440 6100 y_v_deblock &= ~MASK_Y_LEFT_COL;
441
2/2
✓ Branch 0 taken 10980 times.
✓ Branch 1 taken 208620 times.
219600 if(!row)
442 10980 y_h_deblock &= ~MASK_Y_TOP_ROW;
443
4/4
✓ Branch 0 taken 208620 times.
✓ Branch 1 taken 10980 times.
✓ Branch 2 taken 33086 times.
✓ Branch 3 taken 175534 times.
219600 if(row == s->mb_height - 1 || (mb_strong[POS_CUR] | mb_strong[POS_BOTTOM]))
444 44066 y_h_deblock &= ~(MASK_Y_TOP_ROW << 16);
445 /* Calculating chroma patterns is similar and easier since there is
446 * no motion vector pattern for them.
447 */
448
2/2
✓ Branch 0 taken 439200 times.
✓ Branch 1 taken 219600 times.
658800 for(i = 0; i < 2; i++){
449 439200 c_to_deblock[i] = (uvcbp[POS_BOTTOM][i] << 4) | uvcbp[POS_CUR][i];
450 439200 c_v_deblock[i] = c_to_deblock[i]
451 439200 | ((uvcbp[POS_CUR] [i] << 1) & ~MASK_C_LEFT_COL)
452 439200 | ((uvcbp[POS_LEFT][i] & MASK_C_RIGHT_COL) >> 1);
453 439200 c_h_deblock[i] = c_to_deblock[i]
454 439200 | ((uvcbp[POS_TOP][i] & MASK_C_LAST_ROW) >> 2)
455 439200 | (uvcbp[POS_CUR][i] << 2);
456
2/2
✓ Branch 0 taken 12200 times.
✓ Branch 1 taken 427000 times.
439200 if(!mb_x)
457 12200 c_v_deblock[i] &= ~MASK_C_LEFT_COL;
458
2/2
✓ Branch 0 taken 21960 times.
✓ Branch 1 taken 417240 times.
439200 if(!row)
459 21960 c_h_deblock[i] &= ~MASK_C_TOP_ROW;
460
4/4
✓ Branch 0 taken 417240 times.
✓ Branch 1 taken 21960 times.
✓ Branch 2 taken 66172 times.
✓ Branch 3 taken 351068 times.
439200 if(row == s->mb_height - 1 || (mb_strong[POS_CUR] | mb_strong[POS_BOTTOM]))
461 88132 c_h_deblock[i] &= ~(MASK_C_TOP_ROW << 4);
462 }
463
464
2/2
✓ Branch 0 taken 878400 times.
✓ Branch 1 taken 219600 times.
1098000 for(j = 0; j < 16; j += 4){
465 878400 Y = s->current_picture_ptr->f->data[0] + mb_x*16 + (row*16 + j) * s->linesize;
466
2/2
✓ Branch 0 taken 3513600 times.
✓ Branch 1 taken 878400 times.
4392000 for(i = 0; i < 4; i++, Y += 4){
467 3513600 int ij = i + j;
468
2/2
✓ Branch 0 taken 763154 times.
✓ Branch 1 taken 2750446 times.
3513600 int clip_cur = y_to_deblock & (MASK_CUR << ij) ? clip[POS_CUR] : 0;
469
2/2
✓ Branch 0 taken 878400 times.
✓ Branch 1 taken 2635200 times.
3513600 int dither = j ? ij : i*4;
470
471 // if bottom block is coded then we can filter its top edge
472 // (or bottom edge of this block, which is the same)
473
2/2
✓ Branch 0 taken 705968 times.
✓ Branch 1 taken 2807632 times.
3513600 if(y_h_deblock & (MASK_BOTTOM << ij)){
474 705968 rv40_adaptive_loop_filter(&r->rdsp, Y+4*s->linesize,
475 705968 s->linesize, dither,
476
2/2
✓ Branch 0 taken 651215 times.
✓ Branch 1 taken 54753 times.
705968 y_to_deblock & (MASK_BOTTOM << ij) ? clip[POS_CUR] : 0,
477 clip_cur, alpha, beta, betaY,
478 0, 0, 0);
479 }
480 // filter left block edge in ordinary mode (with low filtering strength)
481
6/6
✓ Branch 0 taken 825086 times.
✓ Branch 1 taken 2688514 times.
✓ Branch 2 taken 261909 times.
✓ Branch 3 taken 563177 times.
✓ Branch 4 taken 140445 times.
✓ Branch 5 taken 121464 times.
3513600 if(y_v_deblock & (MASK_CUR << ij) && (i || !(mb_strong[POS_CUR] | mb_strong[POS_LEFT]))){
482
2/2
✓ Branch 0 taken 140445 times.
✓ Branch 1 taken 563177 times.
703622 if(!i)
483
2/2
✓ Branch 0 taken 63107 times.
✓ Branch 1 taken 77338 times.
140445 clip_left = mvmasks[POS_LEFT] & (MASK_RIGHT << j) ? clip[POS_LEFT] : 0;
484 else
485
2/2
✓ Branch 0 taken 518038 times.
✓ Branch 1 taken 45139 times.
563177 clip_left = y_to_deblock & (MASK_CUR << (ij-1)) ? clip[POS_CUR] : 0;
486 703622 rv40_adaptive_loop_filter(&r->rdsp, Y, s->linesize, dither,
487 clip_cur,
488 clip_left,
489 alpha, beta, betaY, 0, 0, 1);
490 }
491 // filter top edge of the current macroblock when filtering strength is high
492
6/6
✓ Branch 0 taken 878400 times.
✓ Branch 1 taken 2635200 times.
✓ Branch 2 taken 273516 times.
✓ Branch 3 taken 604884 times.
✓ Branch 4 taken 132344 times.
✓ Branch 5 taken 141172 times.
3513600 if(!j && y_h_deblock & (MASK_CUR << i) && (mb_strong[POS_CUR] | mb_strong[POS_TOP])){
493 132344 rv40_adaptive_loop_filter(&r->rdsp, Y, s->linesize, dither,
494 clip_cur,
495
2/2
✓ Branch 0 taken 108549 times.
✓ Branch 1 taken 23795 times.
132344 mvmasks[POS_TOP] & (MASK_TOP << i) ? clip[POS_TOP] : 0,
496 alpha, beta, betaY, 0, 1, 0);
497 }
498 // filter left block edge in edge mode (with high filtering strength)
499
6/6
✓ Branch 0 taken 825086 times.
✓ Branch 1 taken 2688514 times.
✓ Branch 2 taken 261909 times.
✓ Branch 3 taken 563177 times.
✓ Branch 4 taken 121464 times.
✓ Branch 5 taken 140445 times.
3513600 if(y_v_deblock & (MASK_CUR << ij) && !i && (mb_strong[POS_CUR] | mb_strong[POS_LEFT])){
500
2/2
✓ Branch 0 taken 104419 times.
✓ Branch 1 taken 17045 times.
121464 clip_left = mvmasks[POS_LEFT] & (MASK_RIGHT << j) ? clip[POS_LEFT] : 0;
501 121464 rv40_adaptive_loop_filter(&r->rdsp, Y, s->linesize, dither,
502 clip_cur,
503 clip_left,
504 alpha, beta, betaY, 0, 1, 1);
505 }
506 }
507 }
508
2/2
✓ Branch 0 taken 439200 times.
✓ Branch 1 taken 219600 times.
658800 for(k = 0; k < 2; k++){
509
2/2
✓ Branch 0 taken 878400 times.
✓ Branch 1 taken 439200 times.
1317600 for(j = 0; j < 2; j++){
510 878400 C = s->current_picture_ptr->f->data[k + 1] + mb_x*8 + (row*8 + j*4) * s->uvlinesize;
511
2/2
✓ Branch 0 taken 1756800 times.
✓ Branch 1 taken 878400 times.
2635200 for(i = 0; i < 2; i++, C += 4){
512 1756800 int ij = i + j*2;
513
2/2
✓ Branch 0 taken 263540 times.
✓ Branch 1 taken 1493260 times.
1756800 int clip_cur = c_to_deblock[k] & (MASK_CUR << ij) ? clip[POS_CUR] : 0;
514
2/2
✓ Branch 0 taken 201976 times.
✓ Branch 1 taken 1554824 times.
1756800 if(c_h_deblock[k] & (MASK_CUR << (ij+2))){
515
2/2
✓ Branch 0 taken 162449 times.
✓ Branch 1 taken 39527 times.
201976 int clip_bot = c_to_deblock[k] & (MASK_CUR << (ij+2)) ? clip[POS_CUR] : 0;
516 201976 rv40_adaptive_loop_filter(&r->rdsp, C+4*s->uvlinesize, s->uvlinesize, i*8,
517 clip_bot,
518 clip_cur,
519 alpha, beta, betaC, 1, 0, 0);
520 }
521
6/6
✓ Branch 0 taken 319462 times.
✓ Branch 1 taken 1437338 times.
✓ Branch 2 taken 167941 times.
✓ Branch 3 taken 151521 times.
✓ Branch 4 taken 48364 times.
✓ Branch 5 taken 119577 times.
1756800 if((c_v_deblock[k] & (MASK_CUR << ij)) && (i || !(mb_strong[POS_CUR] | mb_strong[POS_LEFT]))){
522
2/2
✓ Branch 0 taken 48364 times.
✓ Branch 1 taken 151521 times.
199885 if(!i)
523
2/2
✓ Branch 0 taken 31201 times.
✓ Branch 1 taken 17163 times.
48364 clip_left = uvcbp[POS_LEFT][k] & (MASK_CUR << (2*j+1)) ? clip[POS_LEFT] : 0;
524 else
525
2/2
✓ Branch 0 taken 132361 times.
✓ Branch 1 taken 19160 times.
151521 clip_left = c_to_deblock[k] & (MASK_CUR << (ij-1)) ? clip[POS_CUR] : 0;
526 199885 rv40_adaptive_loop_filter(&r->rdsp, C, s->uvlinesize, j*8,
527 clip_cur,
528 clip_left,
529 alpha, beta, betaC, 1, 0, 1);
530 }
531
6/6
✓ Branch 0 taken 878400 times.
✓ Branch 1 taken 878400 times.
✓ Branch 2 taken 178835 times.
✓ Branch 3 taken 699565 times.
✓ Branch 4 taken 130217 times.
✓ Branch 5 taken 48618 times.
1756800 if(!j && c_h_deblock[k] & (MASK_CUR << ij) && (mb_strong[POS_CUR] | mb_strong[POS_TOP])){
532
2/2
✓ Branch 0 taken 100451 times.
✓ Branch 1 taken 29766 times.
130217 int clip_top = uvcbp[POS_TOP][k] & (MASK_CUR << (ij+2)) ? clip[POS_TOP] : 0;
533 130217 rv40_adaptive_loop_filter(&r->rdsp, C, s->uvlinesize, i*8,
534 clip_cur,
535 clip_top,
536 alpha, beta, betaC, 1, 1, 0);
537 }
538
6/6
✓ Branch 0 taken 319462 times.
✓ Branch 1 taken 1437338 times.
✓ Branch 2 taken 167941 times.
✓ Branch 3 taken 151521 times.
✓ Branch 4 taken 119577 times.
✓ Branch 5 taken 48364 times.
1756800 if(c_v_deblock[k] & (MASK_CUR << ij) && !i && (mb_strong[POS_CUR] | mb_strong[POS_LEFT])){
539
2/2
✓ Branch 0 taken 97623 times.
✓ Branch 1 taken 21954 times.
119577 clip_left = uvcbp[POS_LEFT][k] & (MASK_CUR << (2*j+1)) ? clip[POS_LEFT] : 0;
540 119577 rv40_adaptive_loop_filter(&r->rdsp, C, s->uvlinesize, j*8,
541 clip_cur,
542 clip_left,
543 alpha, beta, betaC, 1, 1, 1);
544 }
545 }
546 }
547 }
548 }
549 6100 }
550
551 /**
552 * Initialize decoder.
553 */
554 4 static av_cold int rv40_decode_init(AVCodecContext *avctx)
555 {
556 4 RV34DecContext *r = avctx->priv_data;
557 int ret;
558
559 4 r->rv30 = 0;
560
1/2
✗ Branch 1 not taken.
✓ Branch 2 taken 4 times.
4 if ((ret = ff_rv34_decode_init(avctx)) < 0)
561 return ret;
562
2/2
✓ Branch 0 taken 2 times.
✓ Branch 1 taken 2 times.
4 if(!aic_top_vlc.bits)
563 2 rv40_init_tables();
564 4 r->parse_slice_header = rv40_parse_slice_header;
565 4 r->decode_intra_types = rv40_decode_intra_types;
566 4 r->decode_mb_info = rv40_decode_mb_info;
567 4 r->loop_filter = rv40_loop_filter;
568 4 r->luma_dc_quant_i = rv40_luma_dc_quant[0];
569 4 r->luma_dc_quant_p = rv40_luma_dc_quant[1];
570 4 ff_rv40dsp_init(&r->rdsp);
571 4 return 0;
572 }
573
574 const AVCodec ff_rv40_decoder = {
575 .name = "rv40",
576 .long_name = NULL_IF_CONFIG_SMALL("RealVideo 4.0"),
577 .type = AVMEDIA_TYPE_VIDEO,
578 .id = AV_CODEC_ID_RV40,
579 .priv_data_size = sizeof(RV34DecContext),
580 .init = rv40_decode_init,
581 .close = ff_rv34_decode_end,
582 .decode = ff_rv34_decode_frame,
583 .capabilities = AV_CODEC_CAP_DR1 | AV_CODEC_CAP_DELAY |
584 AV_CODEC_CAP_FRAME_THREADS,
585 .flush = ff_mpeg_flush,
586 .pix_fmts = (const enum AVPixelFormat[]) {
587 AV_PIX_FMT_YUV420P,
588 AV_PIX_FMT_NONE
589 },
590 .update_thread_context = ONLY_IF_THREADS_ENABLED(ff_rv34_decode_update_thread_context),
591 .caps_internal = FF_CODEC_CAP_ALLOCATE_PROGRESS,
592 };
593