lavc decoders: work with refcounted frames.
[libav.git] / libavcodec / error_resilience.c
1 /*
2 * Error resilience / concealment
3 *
4 * Copyright (c) 2002-2004 Michael Niedermayer <michaelni@gmx.at>
5 *
6 * This file is part of Libav.
7 *
8 * Libav is free software; you can redistribute it and/or
9 * modify it under the terms of the GNU Lesser General Public
10 * License as published by the Free Software Foundation; either
11 * version 2.1 of the License, or (at your option) any later version.
12 *
13 * Libav is distributed in the hope that it will be useful,
14 * but WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
16 * Lesser General Public License for more details.
17 *
18 * You should have received a copy of the GNU Lesser General Public
19 * License along with Libav; if not, write to the Free Software
20 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
21 */
22
23 /**
24 * @file
25 * Error resilience / concealment.
26 */
27
28 #include <limits.h>
29
30 #include "avcodec.h"
31 #include "error_resilience.h"
32 #include "mpegvideo.h"
33 #include "rectangle.h"
34 #include "thread.h"
35
36 /**
37 * @param stride the number of MVs to get to the next row
38 * @param mv_step the number of MVs per row or column in a macroblock
39 */
40 static void set_mv_strides(ERContext *s, int *mv_step, int *stride)
41 {
42 if (s->avctx->codec_id == AV_CODEC_ID_H264) {
43 assert(s->quarter_sample);
44 *mv_step = 4;
45 *stride = s->mb_width * 4;
46 } else {
47 *mv_step = 2;
48 *stride = s->b8_stride;
49 }
50 }
51
52 /**
53 * Replace the current MB with a flat dc-only version.
54 */
55 static void put_dc(ERContext *s, uint8_t *dest_y, uint8_t *dest_cb,
56 uint8_t *dest_cr, int mb_x, int mb_y)
57 {
58 int *linesize = s->cur_pic->f.linesize;
59 int dc, dcu, dcv, y, i;
60 for (i = 0; i < 4; i++) {
61 dc = s->dc_val[0][mb_x * 2 + (i & 1) + (mb_y * 2 + (i >> 1)) * s->b8_stride];
62 if (dc < 0)
63 dc = 0;
64 else if (dc > 2040)
65 dc = 2040;
66 for (y = 0; y < 8; y++) {
67 int x;
68 for (x = 0; x < 8; x++)
69 dest_y[x + (i & 1) * 8 + (y + (i >> 1) * 8) * linesize[0]] = dc / 8;
70 }
71 }
72 dcu = s->dc_val[1][mb_x + mb_y * s->mb_stride];
73 dcv = s->dc_val[2][mb_x + mb_y * s->mb_stride];
74 if (dcu < 0)
75 dcu = 0;
76 else if (dcu > 2040)
77 dcu = 2040;
78 if (dcv < 0)
79 dcv = 0;
80 else if (dcv > 2040)
81 dcv = 2040;
82 for (y = 0; y < 8; y++) {
83 int x;
84 for (x = 0; x < 8; x++) {
85 dest_cb[x + y * linesize[1]] = dcu / 8;
86 dest_cr[x + y * linesize[2]] = dcv / 8;
87 }
88 }
89 }
90
91 static void filter181(int16_t *data, int width, int height, int stride)
92 {
93 int x, y;
94
95 /* horizontal filter */
96 for (y = 1; y < height - 1; y++) {
97 int prev_dc = data[0 + y * stride];
98
99 for (x = 1; x < width - 1; x++) {
100 int dc;
101 dc = -prev_dc +
102 data[x + y * stride] * 8 -
103 data[x + 1 + y * stride];
104 dc = (dc * 10923 + 32768) >> 16;
105 prev_dc = data[x + y * stride];
106 data[x + y * stride] = dc;
107 }
108 }
109
110 /* vertical filter */
111 for (x = 1; x < width - 1; x++) {
112 int prev_dc = data[x];
113
114 for (y = 1; y < height - 1; y++) {
115 int dc;
116
117 dc = -prev_dc +
118 data[x + y * stride] * 8 -
119 data[x + (y + 1) * stride];
120 dc = (dc * 10923 + 32768) >> 16;
121 prev_dc = data[x + y * stride];
122 data[x + y * stride] = dc;
123 }
124 }
125 }
126
127 /**
128 * guess the dc of blocks which do not have an undamaged dc
129 * @param w width in 8 pixel blocks
130 * @param h height in 8 pixel blocks
131 */
132 static void guess_dc(ERContext *s, int16_t *dc, int w,
133 int h, int stride, int is_luma)
134 {
135 int b_x, b_y;
136
137 for (b_y = 0; b_y < h; b_y++) {
138 for (b_x = 0; b_x < w; b_x++) {
139 int color[4] = { 1024, 1024, 1024, 1024 };
140 int distance[4] = { 9999, 9999, 9999, 9999 };
141 int mb_index, error, j;
142 int64_t guess, weight_sum;
143 mb_index = (b_x >> is_luma) + (b_y >> is_luma) * s->mb_stride;
144 error = s->error_status_table[mb_index];
145
146 if (IS_INTER(s->cur_pic->mb_type[mb_index]))
147 continue; // inter
148 if (!(error & ER_DC_ERROR))
149 continue; // dc-ok
150
151 /* right block */
152 for (j = b_x + 1; j < w; j++) {
153 int mb_index_j = (j >> is_luma) + (b_y >> is_luma) * s->mb_stride;
154 int error_j = s->error_status_table[mb_index_j];
155 int intra_j = IS_INTRA(s->cur_pic->mb_type[mb_index_j]);
156 if (intra_j == 0 || !(error_j & ER_DC_ERROR)) {
157 color[0] = dc[j + b_y * stride];
158 distance[0] = j - b_x;
159 break;
160 }
161 }
162
163 /* left block */
164 for (j = b_x - 1; j >= 0; j--) {
165 int mb_index_j = (j >> is_luma) + (b_y >> is_luma) * s->mb_stride;
166 int error_j = s->error_status_table[mb_index_j];
167 int intra_j = IS_INTRA(s->cur_pic->mb_type[mb_index_j]);
168 if (intra_j == 0 || !(error_j & ER_DC_ERROR)) {
169 color[1] = dc[j + b_y * stride];
170 distance[1] = b_x - j;
171 break;
172 }
173 }
174
175 /* bottom block */
176 for (j = b_y + 1; j < h; j++) {
177 int mb_index_j = (b_x >> is_luma) + (j >> is_luma) * s->mb_stride;
178 int error_j = s->error_status_table[mb_index_j];
179 int intra_j = IS_INTRA(s->cur_pic->mb_type[mb_index_j]);
180
181 if (intra_j == 0 || !(error_j & ER_DC_ERROR)) {
182 color[2] = dc[b_x + j * stride];
183 distance[2] = j - b_y;
184 break;
185 }
186 }
187
188 /* top block */
189 for (j = b_y - 1; j >= 0; j--) {
190 int mb_index_j = (b_x >> is_luma) + (j >> is_luma) * s->mb_stride;
191 int error_j = s->error_status_table[mb_index_j];
192 int intra_j = IS_INTRA(s->cur_pic->mb_type[mb_index_j]);
193 if (intra_j == 0 || !(error_j & ER_DC_ERROR)) {
194 color[3] = dc[b_x + j * stride];
195 distance[3] = b_y - j;
196 break;
197 }
198 }
199
200 weight_sum = 0;
201 guess = 0;
202 for (j = 0; j < 4; j++) {
203 int64_t weight = 256 * 256 * 256 * 16 / distance[j];
204 guess += weight * (int64_t) color[j];
205 weight_sum += weight;
206 }
207 guess = (guess + weight_sum / 2) / weight_sum;
208 dc[b_x + b_y * stride] = guess;
209 }
210 }
211 }
212
213 /**
214 * simple horizontal deblocking filter used for error resilience
215 * @param w width in 8 pixel blocks
216 * @param h height in 8 pixel blocks
217 */
218 static void h_block_filter(ERContext *s, uint8_t *dst, int w,
219 int h, int stride, int is_luma)
220 {
221 int b_x, b_y, mvx_stride, mvy_stride;
222 uint8_t *cm = ff_cropTbl + MAX_NEG_CROP;
223 set_mv_strides(s, &mvx_stride, &mvy_stride);
224 mvx_stride >>= is_luma;
225 mvy_stride *= mvx_stride;
226
227 for (b_y = 0; b_y < h; b_y++) {
228 for (b_x = 0; b_x < w - 1; b_x++) {
229 int y;
230 int left_status = s->error_status_table[( b_x >> is_luma) + (b_y >> is_luma) * s->mb_stride];
231 int right_status = s->error_status_table[((b_x + 1) >> is_luma) + (b_y >> is_luma) * s->mb_stride];
232 int left_intra = IS_INTRA(s->cur_pic->mb_type[( b_x >> is_luma) + (b_y >> is_luma) * s->mb_stride]);
233 int right_intra = IS_INTRA(s->cur_pic->mb_type[((b_x + 1) >> is_luma) + (b_y >> is_luma) * s->mb_stride]);
234 int left_damage = left_status & ER_MB_ERROR;
235 int right_damage = right_status & ER_MB_ERROR;
236 int offset = b_x * 8 + b_y * stride * 8;
237 int16_t *left_mv = s->cur_pic->motion_val[0][mvy_stride * b_y + mvx_stride * b_x];
238 int16_t *right_mv = s->cur_pic->motion_val[0][mvy_stride * b_y + mvx_stride * (b_x + 1)];
239 if (!(left_damage || right_damage))
240 continue; // both undamaged
241 if ((!left_intra) && (!right_intra) &&
242 FFABS(left_mv[0] - right_mv[0]) +
243 FFABS(left_mv[1] + right_mv[1]) < 2)
244 continue;
245
246 for (y = 0; y < 8; y++) {
247 int a, b, c, d;
248
249 a = dst[offset + 7 + y * stride] - dst[offset + 6 + y * stride];
250 b = dst[offset + 8 + y * stride] - dst[offset + 7 + y * stride];
251 c = dst[offset + 9 + y * stride] - dst[offset + 8 + y * stride];
252
253 d = FFABS(b) - ((FFABS(a) + FFABS(c) + 1) >> 1);
254 d = FFMAX(d, 0);
255 if (b < 0)
256 d = -d;
257
258 if (d == 0)
259 continue;
260
261 if (!(left_damage && right_damage))
262 d = d * 16 / 9;
263
264 if (left_damage) {
265 dst[offset + 7 + y * stride] = cm[dst[offset + 7 + y * stride] + ((d * 7) >> 4)];
266 dst[offset + 6 + y * stride] = cm[dst[offset + 6 + y * stride] + ((d * 5) >> 4)];
267 dst[offset + 5 + y * stride] = cm[dst[offset + 5 + y * stride] + ((d * 3) >> 4)];
268 dst[offset + 4 + y * stride] = cm[dst[offset + 4 + y * stride] + ((d * 1) >> 4)];
269 }
270 if (right_damage) {
271 dst[offset + 8 + y * stride] = cm[dst[offset + 8 + y * stride] - ((d * 7) >> 4)];
272 dst[offset + 9 + y * stride] = cm[dst[offset + 9 + y * stride] - ((d * 5) >> 4)];
273 dst[offset + 10+ y * stride] = cm[dst[offset + 10 + y * stride] - ((d * 3) >> 4)];
274 dst[offset + 11+ y * stride] = cm[dst[offset + 11 + y * stride] - ((d * 1) >> 4)];
275 }
276 }
277 }
278 }
279 }
280
281 /**
282 * simple vertical deblocking filter used for error resilience
283 * @param w width in 8 pixel blocks
284 * @param h height in 8 pixel blocks
285 */
286 static void v_block_filter(ERContext *s, uint8_t *dst, int w, int h,
287 int stride, int is_luma)
288 {
289 int b_x, b_y, mvx_stride, mvy_stride;
290 uint8_t *cm = ff_cropTbl + MAX_NEG_CROP;
291 set_mv_strides(s, &mvx_stride, &mvy_stride);
292 mvx_stride >>= is_luma;
293 mvy_stride *= mvx_stride;
294
295 for (b_y = 0; b_y < h - 1; b_y++) {
296 for (b_x = 0; b_x < w; b_x++) {
297 int x;
298 int top_status = s->error_status_table[(b_x >> is_luma) + (b_y >> is_luma) * s->mb_stride];
299 int bottom_status = s->error_status_table[(b_x >> is_luma) + ((b_y + 1) >> is_luma) * s->mb_stride];
300 int top_intra = IS_INTRA(s->cur_pic->mb_type[(b_x >> is_luma) + ( b_y >> is_luma) * s->mb_stride]);
301 int bottom_intra = IS_INTRA(s->cur_pic->mb_type[(b_x >> is_luma) + ((b_y + 1) >> is_luma) * s->mb_stride]);
302 int top_damage = top_status & ER_MB_ERROR;
303 int bottom_damage = bottom_status & ER_MB_ERROR;
304 int offset = b_x * 8 + b_y * stride * 8;
305
306 int16_t *top_mv = s->cur_pic->motion_val[0][mvy_stride * b_y + mvx_stride * b_x];
307 int16_t *bottom_mv = s->cur_pic->motion_val[0][mvy_stride * (b_y + 1) + mvx_stride * b_x];
308
309 if (!(top_damage || bottom_damage))
310 continue; // both undamaged
311
312 if ((!top_intra) && (!bottom_intra) &&
313 FFABS(top_mv[0] - bottom_mv[0]) +
314 FFABS(top_mv[1] + bottom_mv[1]) < 2)
315 continue;
316
317 for (x = 0; x < 8; x++) {
318 int a, b, c, d;
319
320 a = dst[offset + x + 7 * stride] - dst[offset + x + 6 * stride];
321 b = dst[offset + x + 8 * stride] - dst[offset + x + 7 * stride];
322 c = dst[offset + x + 9 * stride] - dst[offset + x + 8 * stride];
323
324 d = FFABS(b) - ((FFABS(a) + FFABS(c) + 1) >> 1);
325 d = FFMAX(d, 0);
326 if (b < 0)
327 d = -d;
328
329 if (d == 0)
330 continue;
331
332 if (!(top_damage && bottom_damage))
333 d = d * 16 / 9;
334
335 if (top_damage) {
336 dst[offset + x + 7 * stride] = cm[dst[offset + x + 7 * stride] + ((d * 7) >> 4)];
337 dst[offset + x + 6 * stride] = cm[dst[offset + x + 6 * stride] + ((d * 5) >> 4)];
338 dst[offset + x + 5 * stride] = cm[dst[offset + x + 5 * stride] + ((d * 3) >> 4)];
339 dst[offset + x + 4 * stride] = cm[dst[offset + x + 4 * stride] + ((d * 1) >> 4)];
340 }
341 if (bottom_damage) {
342 dst[offset + x + 8 * stride] = cm[dst[offset + x + 8 * stride] - ((d * 7) >> 4)];
343 dst[offset + x + 9 * stride] = cm[dst[offset + x + 9 * stride] - ((d * 5) >> 4)];
344 dst[offset + x + 10 * stride] = cm[dst[offset + x + 10 * stride] - ((d * 3) >> 4)];
345 dst[offset + x + 11 * stride] = cm[dst[offset + x + 11 * stride] - ((d * 1) >> 4)];
346 }
347 }
348 }
349 }
350 }
351
352 static void guess_mv(ERContext *s)
353 {
354 uint8_t *fixed = s->er_temp_buffer;
355 #define MV_FROZEN 3
356 #define MV_CHANGED 2
357 #define MV_UNCHANGED 1
358 const int mb_stride = s->mb_stride;
359 const int mb_width = s->mb_width;
360 const int mb_height = s->mb_height;
361 int i, depth, num_avail;
362 int mb_x, mb_y, mot_step, mot_stride;
363
364 set_mv_strides(s, &mot_step, &mot_stride);
365
366 num_avail = 0;
367 for (i = 0; i < s->mb_num; i++) {
368 const int mb_xy = s->mb_index2xy[i];
369 int f = 0;
370 int error = s->error_status_table[mb_xy];
371
372 if (IS_INTRA(s->cur_pic->mb_type[mb_xy]))
373 f = MV_FROZEN; // intra // FIXME check
374 if (!(error & ER_MV_ERROR))
375 f = MV_FROZEN; // inter with undamaged MV
376
377 fixed[mb_xy] = f;
378 if (f == MV_FROZEN)
379 num_avail++;
380 }
381
382 if ((!(s->avctx->error_concealment&FF_EC_GUESS_MVS)) ||
383 num_avail <= mb_width / 2) {
384 for (mb_y = 0; mb_y < s->mb_height; mb_y++) {
385 for (mb_x = 0; mb_x < s->mb_width; mb_x++) {
386 const int mb_xy = mb_x + mb_y * s->mb_stride;
387 int mv_dir = (s->last_pic && s->last_pic->f.data[0]) ? MV_DIR_FORWARD : MV_DIR_BACKWARD;
388
389 if (IS_INTRA(s->cur_pic->mb_type[mb_xy]))
390 continue;
391 if (!(s->error_status_table[mb_xy] & ER_MV_ERROR))
392 continue;
393
394 s->mv[0][0][0] = 0;
395 s->mv[0][0][1] = 0;
396 s->decode_mb(s->opaque, 0, mv_dir, MV_TYPE_16X16, &s->mv,
397 mb_x, mb_y, 0, 0);
398 }
399 }
400 return;
401 }
402
403 for (depth = 0; ; depth++) {
404 int changed, pass, none_left;
405
406 none_left = 1;
407 changed = 1;
408 for (pass = 0; (changed || pass < 2) && pass < 10; pass++) {
409 int mb_x, mb_y;
410 int score_sum = 0;
411
412 changed = 0;
413 for (mb_y = 0; mb_y < s->mb_height; mb_y++) {
414 for (mb_x = 0; mb_x < s->mb_width; mb_x++) {
415 const int mb_xy = mb_x + mb_y * s->mb_stride;
416 int mv_predictor[8][2] = { { 0 } };
417 int ref[8] = { 0 };
418 int pred_count = 0;
419 int j;
420 int best_score = 256 * 256 * 256 * 64;
421 int best_pred = 0;
422 const int mot_index = (mb_x + mb_y * mot_stride) * mot_step;
423 int prev_x, prev_y, prev_ref;
424
425 if ((mb_x ^ mb_y ^ pass) & 1)
426 continue;
427
428 if (fixed[mb_xy] == MV_FROZEN)
429 continue;
430 assert(!IS_INTRA(s->cur_pic->mb_type[mb_xy]));
431 assert(s->last_pic && s->last_pic->f.data[0]);
432
433 j = 0;
434 if (mb_x > 0 && fixed[mb_xy - 1] == MV_FROZEN)
435 j = 1;
436 if (mb_x + 1 < mb_width && fixed[mb_xy + 1] == MV_FROZEN)
437 j = 1;
438 if (mb_y > 0 && fixed[mb_xy - mb_stride] == MV_FROZEN)
439 j = 1;
440 if (mb_y + 1 < mb_height && fixed[mb_xy + mb_stride] == MV_FROZEN)
441 j = 1;
442 if (j == 0)
443 continue;
444
445 j = 0;
446 if (mb_x > 0 && fixed[mb_xy - 1 ] == MV_CHANGED)
447 j = 1;
448 if (mb_x + 1 < mb_width && fixed[mb_xy + 1 ] == MV_CHANGED)
449 j = 1;
450 if (mb_y > 0 && fixed[mb_xy - mb_stride] == MV_CHANGED)
451 j = 1;
452 if (mb_y + 1 < mb_height && fixed[mb_xy + mb_stride] == MV_CHANGED)
453 j = 1;
454 if (j == 0 && pass > 1)
455 continue;
456
457 none_left = 0;
458
459 if (mb_x > 0 && fixed[mb_xy - 1]) {
460 mv_predictor[pred_count][0] =
461 s->cur_pic->motion_val[0][mot_index - mot_step][0];
462 mv_predictor[pred_count][1] =
463 s->cur_pic->motion_val[0][mot_index - mot_step][1];
464 ref[pred_count] =
465 s->cur_pic->ref_index[0][4 * (mb_xy - 1)];
466 pred_count++;
467 }
468 if (mb_x + 1 < mb_width && fixed[mb_xy + 1]) {
469 mv_predictor[pred_count][0] =
470 s->cur_pic->motion_val[0][mot_index + mot_step][0];
471 mv_predictor[pred_count][1] =
472 s->cur_pic->motion_val[0][mot_index + mot_step][1];
473 ref[pred_count] =
474 s->cur_pic->ref_index[0][4 * (mb_xy + 1)];
475 pred_count++;
476 }
477 if (mb_y > 0 && fixed[mb_xy - mb_stride]) {
478 mv_predictor[pred_count][0] =
479 s->cur_pic->motion_val[0][mot_index - mot_stride * mot_step][0];
480 mv_predictor[pred_count][1] =
481 s->cur_pic->motion_val[0][mot_index - mot_stride * mot_step][1];
482 ref[pred_count] =
483 s->cur_pic->ref_index[0][4 * (mb_xy - s->mb_stride)];
484 pred_count++;
485 }
486 if (mb_y + 1<mb_height && fixed[mb_xy + mb_stride]) {
487 mv_predictor[pred_count][0] =
488 s->cur_pic->motion_val[0][mot_index + mot_stride * mot_step][0];
489 mv_predictor[pred_count][1] =
490 s->cur_pic->motion_val[0][mot_index + mot_stride * mot_step][1];
491 ref[pred_count] =
492 s->cur_pic->ref_index[0][4 * (mb_xy + s->mb_stride)];
493 pred_count++;
494 }
495 if (pred_count == 0)
496 continue;
497
498 if (pred_count > 1) {
499 int sum_x = 0, sum_y = 0, sum_r = 0;
500 int max_x, max_y, min_x, min_y, max_r, min_r;
501
502 for (j = 0; j < pred_count; j++) {
503 sum_x += mv_predictor[j][0];
504 sum_y += mv_predictor[j][1];
505 sum_r += ref[j];
506 if (j && ref[j] != ref[j - 1])
507 goto skip_mean_and_median;
508 }
509
510 /* mean */
511 mv_predictor[pred_count][0] = sum_x / j;
512 mv_predictor[pred_count][1] = sum_y / j;
513 ref[pred_count] = sum_r / j;
514
515 /* median */
516 if (pred_count >= 3) {
517 min_y = min_x = min_r = 99999;
518 max_y = max_x = max_r = -99999;
519 } else {
520 min_x = min_y = max_x = max_y = min_r = max_r = 0;
521 }
522 for (j = 0; j < pred_count; j++) {
523 max_x = FFMAX(max_x, mv_predictor[j][0]);
524 max_y = FFMAX(max_y, mv_predictor[j][1]);
525 max_r = FFMAX(max_r, ref[j]);
526 min_x = FFMIN(min_x, mv_predictor[j][0]);
527 min_y = FFMIN(min_y, mv_predictor[j][1]);
528 min_r = FFMIN(min_r, ref[j]);
529 }
530 mv_predictor[pred_count + 1][0] = sum_x - max_x - min_x;
531 mv_predictor[pred_count + 1][1] = sum_y - max_y - min_y;
532 ref[pred_count + 1] = sum_r - max_r - min_r;
533
534 if (pred_count == 4) {
535 mv_predictor[pred_count + 1][0] /= 2;
536 mv_predictor[pred_count + 1][1] /= 2;
537 ref[pred_count + 1] /= 2;
538 }
539 pred_count += 2;
540 }
541
542 skip_mean_and_median:
543 /* zero MV */
544 pred_count++;
545
546 if (!fixed[mb_xy]) {
547 if (s->avctx->codec_id == AV_CODEC_ID_H264) {
548 // FIXME
549 } else {
550 ff_thread_await_progress(&s->last_pic->tf,
551 mb_y, 0);
552 }
553 if (!s->last_pic->motion_val[0] ||
554 !s->last_pic->ref_index[0])
555 goto skip_last_mv;
556 prev_x = s->last_pic->motion_val[0][mot_index][0];
557 prev_y = s->last_pic->motion_val[0][mot_index][1];
558 prev_ref = s->last_pic->ref_index[0][4 * mb_xy];
559 } else {
560 prev_x = s->cur_pic->motion_val[0][mot_index][0];
561 prev_y = s->cur_pic->motion_val[0][mot_index][1];
562 prev_ref = s->cur_pic->ref_index[0][4 * mb_xy];
563 }
564
565 /* last MV */
566 mv_predictor[pred_count][0] = prev_x;
567 mv_predictor[pred_count][1] = prev_y;
568 ref[pred_count] = prev_ref;
569 pred_count++;
570
571 skip_last_mv:
572
573 for (j = 0; j < pred_count; j++) {
574 int *linesize = s->cur_pic->f.linesize;
575 int score = 0;
576 uint8_t *src = s->cur_pic->f.data[0] +
577 mb_x * 16 + mb_y * 16 * linesize[0];
578
579 s->cur_pic->motion_val[0][mot_index][0] =
580 s->mv[0][0][0] = mv_predictor[j][0];
581 s->cur_pic->motion_val[0][mot_index][1] =
582 s->mv[0][0][1] = mv_predictor[j][1];
583
584 // predictor intra or otherwise not available
585 if (ref[j] < 0)
586 continue;
587
588 s->decode_mb(s->opaque, ref[j], MV_DIR_FORWARD,
589 MV_TYPE_16X16, &s->mv, mb_x, mb_y, 0, 0);
590
591 if (mb_x > 0 && fixed[mb_xy - 1]) {
592 int k;
593 for (k = 0; k < 16; k++)
594 score += FFABS(src[k * linesize[0] - 1] -
595 src[k * linesize[0]]);
596 }
597 if (mb_x + 1 < mb_width && fixed[mb_xy + 1]) {
598 int k;
599 for (k = 0; k < 16; k++)
600 score += FFABS(src[k * linesize[0] + 15] -
601 src[k * linesize[0] + 16]);
602 }
603 if (mb_y > 0 && fixed[mb_xy - mb_stride]) {
604 int k;
605 for (k = 0; k < 16; k++)
606 score += FFABS(src[k - linesize[0]] - src[k]);
607 }
608 if (mb_y + 1 < mb_height && fixed[mb_xy + mb_stride]) {
609 int k;
610 for (k = 0; k < 16; k++)
611 score += FFABS(src[k + linesize[0] * 15] -
612 src[k + linesize[0] * 16]);
613 }
614
615 if (score <= best_score) { // <= will favor the last MV
616 best_score = score;
617 best_pred = j;
618 }
619 }
620 score_sum += best_score;
621 s->mv[0][0][0] = mv_predictor[best_pred][0];
622 s->mv[0][0][1] = mv_predictor[best_pred][1];
623
624 for (i = 0; i < mot_step; i++)
625 for (j = 0; j < mot_step; j++) {
626 s->cur_pic->motion_val[0][mot_index + i + j * mot_stride][0] = s->mv[0][0][0];
627 s->cur_pic->motion_val[0][mot_index + i + j * mot_stride][1] = s->mv[0][0][1];
628 }
629
630 s->decode_mb(s->opaque, ref[best_pred], MV_DIR_FORWARD,
631 MV_TYPE_16X16, &s->mv, mb_x, mb_y, 0, 0);
632
633
634 if (s->mv[0][0][0] != prev_x || s->mv[0][0][1] != prev_y) {
635 fixed[mb_xy] = MV_CHANGED;
636 changed++;
637 } else
638 fixed[mb_xy] = MV_UNCHANGED;
639 }
640 }
641 }
642
643 if (none_left)
644 return;
645
646 for (i = 0; i < s->mb_num; i++) {
647 int mb_xy = s->mb_index2xy[i];
648 if (fixed[mb_xy])
649 fixed[mb_xy] = MV_FROZEN;
650 }
651 }
652 }
653
654 static int is_intra_more_likely(ERContext *s)
655 {
656 int is_intra_likely, i, j, undamaged_count, skip_amount, mb_x, mb_y;
657
658 if (!s->last_pic || !s->last_pic->f.data[0])
659 return 1; // no previous frame available -> use spatial prediction
660
661 undamaged_count = 0;
662 for (i = 0; i < s->mb_num; i++) {
663 const int mb_xy = s->mb_index2xy[i];
664 const int error = s->error_status_table[mb_xy];
665 if (!((error & ER_DC_ERROR) && (error & ER_MV_ERROR)))
666 undamaged_count++;
667 }
668
669 if (s->avctx->codec_id == AV_CODEC_ID_H264 && s->ref_count <= 0)
670 return 1;
671
672 if (undamaged_count < 5)
673 return 0; // almost all MBs damaged -> use temporal prediction
674
675 // prevent dsp.sad() check, that requires access to the image
676 if (CONFIG_MPEG_XVMC_DECODER &&
677 s->avctx->xvmc_acceleration &&
678 s->cur_pic->f.pict_type == AV_PICTURE_TYPE_I)
679 return 1;
680
681 skip_amount = FFMAX(undamaged_count / 50, 1); // check only up to 50 MBs
682 is_intra_likely = 0;
683
684 j = 0;
685 for (mb_y = 0; mb_y < s->mb_height - 1; mb_y++) {
686 for (mb_x = 0; mb_x < s->mb_width; mb_x++) {
687 int error;
688 const int mb_xy = mb_x + mb_y * s->mb_stride;
689
690 error = s->error_status_table[mb_xy];
691 if ((error & ER_DC_ERROR) && (error & ER_MV_ERROR))
692 continue; // skip damaged
693
694 j++;
695 // skip a few to speed things up
696 if ((j % skip_amount) != 0)
697 continue;
698
699 if (s->cur_pic->f.pict_type == AV_PICTURE_TYPE_I) {
700 int *linesize = s->cur_pic->f.linesize;
701 uint8_t *mb_ptr = s->cur_pic->f.data[0] +
702 mb_x * 16 + mb_y * 16 * linesize[0];
703 uint8_t *last_mb_ptr = s->last_pic->f.data[0] +
704 mb_x * 16 + mb_y * 16 * linesize[0];
705
706 if (s->avctx->codec_id == AV_CODEC_ID_H264) {
707 // FIXME
708 } else {
709 ff_thread_await_progress(&s->last_pic->tf, mb_y, 0);
710 }
711 is_intra_likely += s->dsp->sad[0](NULL, last_mb_ptr, mb_ptr,
712 linesize[0], 16);
713 is_intra_likely -= s->dsp->sad[0](NULL, last_mb_ptr,
714 last_mb_ptr + linesize[0] * 16,
715 linesize[0], 16);
716 } else {
717 if (IS_INTRA(s->cur_pic->mb_type[mb_xy]))
718 is_intra_likely++;
719 else
720 is_intra_likely--;
721 }
722 }
723 }
724 return is_intra_likely > 0;
725 }
726
727 void ff_er_frame_start(ERContext *s)
728 {
729 if (!s->avctx->err_recognition)
730 return;
731
732 memset(s->error_status_table, ER_MB_ERROR | VP_START | ER_MB_END,
733 s->mb_stride * s->mb_height * sizeof(uint8_t));
734 s->error_count = 3 * s->mb_num;
735 s->error_occurred = 0;
736 }
737
738 /**
739 * Add a slice.
740 * @param endx x component of the last macroblock, can be -1
741 * for the last of the previous line
742 * @param status the status at the end (ER_MV_END, ER_AC_ERROR, ...), it is
743 * assumed that no earlier end or error of the same type occurred
744 */
745 void ff_er_add_slice(ERContext *s, int startx, int starty,
746 int endx, int endy, int status)
747 {
748 const int start_i = av_clip(startx + starty * s->mb_width, 0, s->mb_num - 1);
749 const int end_i = av_clip(endx + endy * s->mb_width, 0, s->mb_num);
750 const int start_xy = s->mb_index2xy[start_i];
751 const int end_xy = s->mb_index2xy[end_i];
752 int mask = -1;
753
754 if (s->avctx->hwaccel)
755 return;
756
757 if (start_i > end_i || start_xy > end_xy) {
758 av_log(s->avctx, AV_LOG_ERROR,
759 "internal error, slice end before start\n");
760 return;
761 }
762
763 if (!s->avctx->err_recognition)
764 return;
765
766 mask &= ~VP_START;
767 if (status & (ER_AC_ERROR | ER_AC_END)) {
768 mask &= ~(ER_AC_ERROR | ER_AC_END);
769 s->error_count -= end_i - start_i + 1;
770 }
771 if (status & (ER_DC_ERROR | ER_DC_END)) {
772 mask &= ~(ER_DC_ERROR | ER_DC_END);
773 s->error_count -= end_i - start_i + 1;
774 }
775 if (status & (ER_MV_ERROR | ER_MV_END)) {
776 mask &= ~(ER_MV_ERROR | ER_MV_END);
777 s->error_count -= end_i - start_i + 1;
778 }
779
780 if (status & ER_MB_ERROR) {
781 s->error_occurred = 1;
782 s->error_count = INT_MAX;
783 }
784
785 if (mask == ~0x7F) {
786 memset(&s->error_status_table[start_xy], 0,
787 (end_xy - start_xy) * sizeof(uint8_t));
788 } else {
789 int i;
790 for (i = start_xy; i < end_xy; i++)
791 s->error_status_table[i] &= mask;
792 }
793
794 if (end_i == s->mb_num)
795 s->error_count = INT_MAX;
796 else {
797 s->error_status_table[end_xy] &= mask;
798 s->error_status_table[end_xy] |= status;
799 }
800
801 s->error_status_table[start_xy] |= VP_START;
802
803 if (start_xy > 0 && s->avctx->thread_count <= 1 &&
804 s->avctx->skip_top * s->mb_width < start_i) {
805 int prev_status = s->error_status_table[s->mb_index2xy[start_i - 1]];
806
807 prev_status &= ~ VP_START;
808 if (prev_status != (ER_MV_END | ER_DC_END | ER_AC_END))
809 s->error_count = INT_MAX;
810 }
811 }
812
813 void ff_er_frame_end(ERContext *s)
814 {
815 int *linesize = s->cur_pic->f.linesize;
816 int i, mb_x, mb_y, error, error_type, dc_error, mv_error, ac_error;
817 int distance;
818 int threshold_part[4] = { 100, 100, 100 };
819 int threshold = 50;
820 int is_intra_likely;
821 int size = s->b8_stride * 2 * s->mb_height;
822
823 /* We do not support ER of field pictures yet,
824 * though it should not crash if enabled. */
825 if (!s->avctx->err_recognition || s->error_count == 0 ||
826 s->avctx->hwaccel ||
827 s->avctx->codec->capabilities&CODEC_CAP_HWACCEL_VDPAU ||
828 !s->cur_pic || s->cur_pic->field_picture ||
829 s->error_count == 3 * s->mb_width *
830 (s->avctx->skip_top + s->avctx->skip_bottom)) {
831 return;
832 };
833
834 if (s->cur_pic->motion_val[0] == NULL) {
835 av_log(s->avctx, AV_LOG_ERROR, "Warning MVs not available\n");
836
837 for (i = 0; i < 2; i++) {
838 s->cur_pic->ref_index_buf[i] = av_buffer_allocz(s->mb_stride * s->mb_height * 4 * sizeof(uint8_t));
839 s->cur_pic->motion_val_buf[i] = av_buffer_allocz((size + 4) * 2 * sizeof(uint16_t));
840 if (!s->cur_pic->ref_index_buf[i] || !s->cur_pic->motion_val_buf[i])
841 break;
842 s->cur_pic->ref_index[i] = s->cur_pic->ref_index_buf[i]->data;
843 s->cur_pic->motion_val[i] = (int16_t (*)[2])s->cur_pic->motion_val_buf[i]->data + 4;
844 }
845 if (i < 2) {
846 for (i = 0; i < 2; i++) {
847 av_buffer_unref(&s->cur_pic->ref_index_buf[i]);
848 av_buffer_unref(&s->cur_pic->motion_val_buf[i]);
849 s->cur_pic->ref_index[i] = NULL;
850 s->cur_pic->motion_val[i] = NULL;
851 }
852 return;
853 }
854 s->cur_pic->f.motion_subsample_log2 = 3;
855 }
856
857 if (s->avctx->debug & FF_DEBUG_ER) {
858 for (mb_y = 0; mb_y < s->mb_height; mb_y++) {
859 for (mb_x = 0; mb_x < s->mb_width; mb_x++) {
860 int status = s->error_status_table[mb_x + mb_y * s->mb_stride];
861
862 av_log(s->avctx, AV_LOG_DEBUG, "%2X ", status);
863 }
864 av_log(s->avctx, AV_LOG_DEBUG, "\n");
865 }
866 }
867
868 /* handle overlapping slices */
869 for (error_type = 1; error_type <= 3; error_type++) {
870 int end_ok = 0;
871
872 for (i = s->mb_num - 1; i >= 0; i--) {
873 const int mb_xy = s->mb_index2xy[i];
874 int error = s->error_status_table[mb_xy];
875
876 if (error & (1 << error_type))
877 end_ok = 1;
878 if (error & (8 << error_type))
879 end_ok = 1;
880
881 if (!end_ok)
882 s->error_status_table[mb_xy] |= 1 << error_type;
883
884 if (error & VP_START)
885 end_ok = 0;
886 }
887 }
888
889 /* handle slices with partitions of different length */
890 if (s->partitioned_frame) {
891 int end_ok = 0;
892
893 for (i = s->mb_num - 1; i >= 0; i--) {
894 const int mb_xy = s->mb_index2xy[i];
895 int error = s->error_status_table[mb_xy];
896
897 if (error & ER_AC_END)
898 end_ok = 0;
899 if ((error & ER_MV_END) ||
900 (error & ER_DC_END) ||
901 (error & ER_AC_ERROR))
902 end_ok = 1;
903
904 if (!end_ok)
905 s->error_status_table[mb_xy]|= ER_AC_ERROR;
906
907 if (error & VP_START)
908 end_ok = 0;
909 }
910 }
911
912 /* handle missing slices */
913 if (s->avctx->err_recognition & AV_EF_EXPLODE) {
914 int end_ok = 1;
915
916 // FIXME + 100 hack
917 for (i = s->mb_num - 2; i >= s->mb_width + 100; i--) {
918 const int mb_xy = s->mb_index2xy[i];
919 int error1 = s->error_status_table[mb_xy];
920 int error2 = s->error_status_table[s->mb_index2xy[i + 1]];
921
922 if (error1 & VP_START)
923 end_ok = 1;
924
925 if (error2 == (VP_START | ER_MB_ERROR | ER_MB_END) &&
926 error1 != (VP_START | ER_MB_ERROR | ER_MB_END) &&
927 ((error1 & ER_AC_END) || (error1 & ER_DC_END) ||
928 (error1 & ER_MV_END))) {
929 // end & uninit
930 end_ok = 0;
931 }
932
933 if (!end_ok)
934 s->error_status_table[mb_xy] |= ER_MB_ERROR;
935 }
936 }
937
938 /* backward mark errors */
939 distance = 9999999;
940 for (error_type = 1; error_type <= 3; error_type++) {
941 for (i = s->mb_num - 1; i >= 0; i--) {
942 const int mb_xy = s->mb_index2xy[i];
943 int error = s->error_status_table[mb_xy];
944
945 if (!s->mbskip_table[mb_xy]) // FIXME partition specific
946 distance++;
947 if (error & (1 << error_type))
948 distance = 0;
949
950 if (s->partitioned_frame) {
951 if (distance < threshold_part[error_type - 1])
952 s->error_status_table[mb_xy] |= 1 << error_type;
953 } else {
954 if (distance < threshold)
955 s->error_status_table[mb_xy] |= 1 << error_type;
956 }
957
958 if (error & VP_START)
959 distance = 9999999;
960 }
961 }
962
963 /* forward mark errors */
964 error = 0;
965 for (i = 0; i < s->mb_num; i++) {
966 const int mb_xy = s->mb_index2xy[i];
967 int old_error = s->error_status_table[mb_xy];
968
969 if (old_error & VP_START) {
970 error = old_error & ER_MB_ERROR;
971 } else {
972 error |= old_error & ER_MB_ERROR;
973 s->error_status_table[mb_xy] |= error;
974 }
975 }
976
977 /* handle not partitioned case */
978 if (!s->partitioned_frame) {
979 for (i = 0; i < s->mb_num; i++) {
980 const int mb_xy = s->mb_index2xy[i];
981 error = s->error_status_table[mb_xy];
982 if (error & ER_MB_ERROR)
983 error |= ER_MB_ERROR;
984 s->error_status_table[mb_xy] = error;
985 }
986 }
987
988 dc_error = ac_error = mv_error = 0;
989 for (i = 0; i < s->mb_num; i++) {
990 const int mb_xy = s->mb_index2xy[i];
991 error = s->error_status_table[mb_xy];
992 if (error & ER_DC_ERROR)
993 dc_error++;
994 if (error & ER_AC_ERROR)
995 ac_error++;
996 if (error & ER_MV_ERROR)
997 mv_error++;
998 }
999 av_log(s->avctx, AV_LOG_INFO, "concealing %d DC, %d AC, %d MV errors\n",
1000 dc_error, ac_error, mv_error);
1001
1002 is_intra_likely = is_intra_more_likely(s);
1003
1004 /* set unknown mb-type to most likely */
1005 for (i = 0; i < s->mb_num; i++) {
1006 const int mb_xy = s->mb_index2xy[i];
1007 error = s->error_status_table[mb_xy];
1008 if (!((error & ER_DC_ERROR) && (error & ER_MV_ERROR)))
1009 continue;
1010
1011 if (is_intra_likely)
1012 s->cur_pic->mb_type[mb_xy] = MB_TYPE_INTRA4x4;
1013 else
1014 s->cur_pic->mb_type[mb_xy] = MB_TYPE_16x16 | MB_TYPE_L0;
1015 }
1016
1017 // change inter to intra blocks if no reference frames are available
1018 if (!(s->last_pic && s->last_pic->f.data[0]) &&
1019 !(s->next_pic && s->next_pic->f.data[0]))
1020 for (i = 0; i < s->mb_num; i++) {
1021 const int mb_xy = s->mb_index2xy[i];
1022 if (!IS_INTRA(s->cur_pic->mb_type[mb_xy]))
1023 s->cur_pic->mb_type[mb_xy] = MB_TYPE_INTRA4x4;
1024 }
1025
1026 /* handle inter blocks with damaged AC */
1027 for (mb_y = 0; mb_y < s->mb_height; mb_y++) {
1028 for (mb_x = 0; mb_x < s->mb_width; mb_x++) {
1029 const int mb_xy = mb_x + mb_y * s->mb_stride;
1030 const int mb_type = s->cur_pic->mb_type[mb_xy];
1031 const int dir = !(s->last_pic && s->last_pic->f.data[0]);
1032 const int mv_dir = dir ? MV_DIR_BACKWARD : MV_DIR_FORWARD;
1033 int mv_type;
1034
1035 error = s->error_status_table[mb_xy];
1036
1037 if (IS_INTRA(mb_type))
1038 continue; // intra
1039 if (error & ER_MV_ERROR)
1040 continue; // inter with damaged MV
1041 if (!(error & ER_AC_ERROR))
1042 continue; // undamaged inter
1043
1044 if (IS_8X8(mb_type)) {
1045 int mb_index = mb_x * 2 + mb_y * 2 * s->b8_stride;
1046 int j;
1047 mv_type = MV_TYPE_8X8;
1048 for (j = 0; j < 4; j++) {
1049 s->mv[0][j][0] = s->cur_pic->motion_val[dir][mb_index + (j & 1) + (j >> 1) * s->b8_stride][0];
1050 s->mv[0][j][1] = s->cur_pic->motion_val[dir][mb_index + (j & 1) + (j >> 1) * s->b8_stride][1];
1051 }
1052 } else {
1053 mv_type = MV_TYPE_16X16;
1054 s->mv[0][0][0] = s->cur_pic->motion_val[dir][mb_x * 2 + mb_y * 2 * s->b8_stride][0];
1055 s->mv[0][0][1] = s->cur_pic->motion_val[dir][mb_x * 2 + mb_y * 2 * s->b8_stride][1];
1056 }
1057
1058 s->decode_mb(s->opaque, 0 /* FIXME h264 partitioned slices need this set */,
1059 mv_dir, mv_type, &s->mv, mb_x, mb_y, 0, 0);
1060 }
1061 }
1062
1063 /* guess MVs */
1064 if (s->cur_pic->f.pict_type == AV_PICTURE_TYPE_B) {
1065 for (mb_y = 0; mb_y < s->mb_height; mb_y++) {
1066 for (mb_x = 0; mb_x < s->mb_width; mb_x++) {
1067 int xy = mb_x * 2 + mb_y * 2 * s->b8_stride;
1068 const int mb_xy = mb_x + mb_y * s->mb_stride;
1069 const int mb_type = s->cur_pic->mb_type[mb_xy];
1070 int mv_dir = MV_DIR_FORWARD | MV_DIR_BACKWARD;
1071
1072 error = s->error_status_table[mb_xy];
1073
1074 if (IS_INTRA(mb_type))
1075 continue;
1076 if (!(error & ER_MV_ERROR))
1077 continue; // inter with undamaged MV
1078 if (!(error & ER_AC_ERROR))
1079 continue; // undamaged inter
1080
1081 if (!(s->last_pic && s->last_pic->f.data[0]))
1082 mv_dir &= ~MV_DIR_FORWARD;
1083 if (!(s->next_pic && s->next_pic->f.data[0]))
1084 mv_dir &= ~MV_DIR_BACKWARD;
1085
1086 if (s->pp_time) {
1087 int time_pp = s->pp_time;
1088 int time_pb = s->pb_time;
1089
1090 ff_thread_await_progress(&s->next_pic->tf, mb_y, 0);
1091
1092 s->mv[0][0][0] = s->next_pic->motion_val[0][xy][0] * time_pb / time_pp;
1093 s->mv[0][0][1] = s->next_pic->motion_val[0][xy][1] * time_pb / time_pp;
1094 s->mv[1][0][0] = s->next_pic->motion_val[0][xy][0] * (time_pb - time_pp) / time_pp;
1095 s->mv[1][0][1] = s->next_pic->motion_val[0][xy][1] * (time_pb - time_pp) / time_pp;
1096 } else {
1097 s->mv[0][0][0] = 0;
1098 s->mv[0][0][1] = 0;
1099 s->mv[1][0][0] = 0;
1100 s->mv[1][0][1] = 0;
1101 }
1102
1103 s->decode_mb(s->opaque, 0, mv_dir, MV_TYPE_16X16, &s->mv,
1104 mb_x, mb_y, 0, 0);
1105 }
1106 }
1107 } else
1108 guess_mv(s);
1109
1110 /* the filters below are not XvMC compatible, skip them */
1111 if (CONFIG_MPEG_XVMC_DECODER && s->avctx->xvmc_acceleration)
1112 goto ec_clean;
1113 /* fill DC for inter blocks */
1114 for (mb_y = 0; mb_y < s->mb_height; mb_y++) {
1115 for (mb_x = 0; mb_x < s->mb_width; mb_x++) {
1116 int dc, dcu, dcv, y, n;
1117 int16_t *dc_ptr;
1118 uint8_t *dest_y, *dest_cb, *dest_cr;
1119 const int mb_xy = mb_x + mb_y * s->mb_stride;
1120 const int mb_type = s->cur_pic->mb_type[mb_xy];
1121
1122 error = s->error_status_table[mb_xy];
1123
1124 if (IS_INTRA(mb_type) && s->partitioned_frame)
1125 continue;
1126 // if (error & ER_MV_ERROR)
1127 // continue; // inter data damaged FIXME is this good?
1128
1129 dest_y = s->cur_pic->f.data[0] + mb_x * 16 + mb_y * 16 * linesize[0];
1130 dest_cb = s->cur_pic->f.data[1] + mb_x * 8 + mb_y * 8 * linesize[1];
1131 dest_cr = s->cur_pic->f.data[2] + mb_x * 8 + mb_y * 8 * linesize[2];
1132
1133 dc_ptr = &s->dc_val[0][mb_x * 2 + mb_y * 2 * s->b8_stride];
1134 for (n = 0; n < 4; n++) {
1135 dc = 0;
1136 for (y = 0; y < 8; y++) {
1137 int x;
1138 for (x = 0; x < 8; x++)
1139 dc += dest_y[x + (n & 1) * 8 +
1140 (y + (n >> 1) * 8) * linesize[0]];
1141 }
1142 dc_ptr[(n & 1) + (n >> 1) * s->b8_stride] = (dc + 4) >> 3;
1143 }
1144
1145 dcu = dcv = 0;
1146 for (y = 0; y < 8; y++) {
1147 int x;
1148 for (x = 0; x < 8; x++) {
1149 dcu += dest_cb[x + y * linesize[1]];
1150 dcv += dest_cr[x + y * linesize[2]];
1151 }
1152 }
1153 s->dc_val[1][mb_x + mb_y * s->mb_stride] = (dcu + 4) >> 3;
1154 s->dc_val[2][mb_x + mb_y * s->mb_stride] = (dcv + 4) >> 3;
1155 }
1156 }
1157
1158 /* guess DC for damaged blocks */
1159 guess_dc(s, s->dc_val[0], s->mb_width * 2, s->mb_height * 2, s->b8_stride, 1);
1160 guess_dc(s, s->dc_val[1], s->mb_width, s->mb_height, s->mb_stride, 0);
1161 guess_dc(s, s->dc_val[2], s->mb_width, s->mb_height, s->mb_stride, 0);
1162
1163 /* filter luma DC */
1164 filter181(s->dc_val[0], s->mb_width * 2, s->mb_height * 2, s->b8_stride);
1165
1166 /* render DC only intra */
1167 for (mb_y = 0; mb_y < s->mb_height; mb_y++) {
1168 for (mb_x = 0; mb_x < s->mb_width; mb_x++) {
1169 uint8_t *dest_y, *dest_cb, *dest_cr;
1170 const int mb_xy = mb_x + mb_y * s->mb_stride;
1171 const int mb_type = s->cur_pic->mb_type[mb_xy];
1172
1173 error = s->error_status_table[mb_xy];
1174
1175 if (IS_INTER(mb_type))
1176 continue;
1177 if (!(error & ER_AC_ERROR))
1178 continue; // undamaged
1179
1180 dest_y = s->cur_pic->f.data[0] + mb_x * 16 + mb_y * 16 * linesize[0];
1181 dest_cb = s->cur_pic->f.data[1] + mb_x * 8 + mb_y * 8 * linesize[1];
1182 dest_cr = s->cur_pic->f.data[2] + mb_x * 8 + mb_y * 8 * linesize[2];
1183
1184 put_dc(s, dest_y, dest_cb, dest_cr, mb_x, mb_y);
1185 }
1186 }
1187
1188 if (s->avctx->error_concealment & FF_EC_DEBLOCK) {
1189 /* filter horizontal block boundaries */
1190 h_block_filter(s, s->cur_pic->f.data[0], s->mb_width * 2,
1191 s->mb_height * 2, linesize[0], 1);
1192 h_block_filter(s, s->cur_pic->f.data[1], s->mb_width,
1193 s->mb_height, linesize[1], 0);
1194 h_block_filter(s, s->cur_pic->f.data[2], s->mb_width,
1195 s->mb_height, linesize[2], 0);
1196
1197 /* filter vertical block boundaries */
1198 v_block_filter(s, s->cur_pic->f.data[0], s->mb_width * 2,
1199 s->mb_height * 2, linesize[0], 1);
1200 v_block_filter(s, s->cur_pic->f.data[1], s->mb_width,
1201 s->mb_height, linesize[1], 0);
1202 v_block_filter(s, s->cur_pic->f.data[2], s->mb_width,
1203 s->mb_height, linesize[2], 0);
1204 }
1205
1206 ec_clean:
1207 /* clean a few tables */
1208 for (i = 0; i < s->mb_num; i++) {
1209 const int mb_xy = s->mb_index2xy[i];
1210 int error = s->error_status_table[mb_xy];
1211
1212 if (s->cur_pic->f.pict_type != AV_PICTURE_TYPE_B &&
1213 (error & (ER_DC_ERROR | ER_MV_ERROR | ER_AC_ERROR))) {
1214 s->mbskip_table[mb_xy] = 0;
1215 }
1216 s->mbintra_table[mb_xy] = 1;
1217 }
1218 s->cur_pic = NULL;
1219 s->next_pic = NULL;
1220 s->last_pic = NULL;
1221 }