Libav
error_resilience.c
Go to the documentation of this file.
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 
28 #include <limits.h>
29 
30 #include "libavutil/internal.h"
31 #include "avcodec.h"
32 #include "error_resilience.h"
33 #include "mpegutils.h"
34 #include "mpegvideo.h"
35 #include "rectangle.h"
36 #include "thread.h"
37 #include "version.h"
38 
43 static void set_mv_strides(ERContext *s, int *mv_step, int *stride)
44 {
45  if (s->avctx->codec_id == AV_CODEC_ID_H264) {
46  assert(s->quarter_sample);
47  *mv_step = 4;
48  *stride = s->mb_width * 4;
49  } else {
50  *mv_step = 2;
51  *stride = s->b8_stride;
52  }
53 }
54 
58 static void put_dc(ERContext *s, uint8_t *dest_y, uint8_t *dest_cb,
59  uint8_t *dest_cr, int mb_x, int mb_y)
60 {
61  int *linesize = s->cur_pic.f->linesize;
62  int dc, dcu, dcv, y, i;
63  for (i = 0; i < 4; i++) {
64  dc = s->dc_val[0][mb_x * 2 + (i & 1) + (mb_y * 2 + (i >> 1)) * s->b8_stride];
65  if (dc < 0)
66  dc = 0;
67  else if (dc > 2040)
68  dc = 2040;
69  for (y = 0; y < 8; y++) {
70  int x;
71  for (x = 0; x < 8; x++)
72  dest_y[x + (i & 1) * 8 + (y + (i >> 1) * 8) * linesize[0]] = dc / 8;
73  }
74  }
75  dcu = s->dc_val[1][mb_x + mb_y * s->mb_stride];
76  dcv = s->dc_val[2][mb_x + mb_y * s->mb_stride];
77  if (dcu < 0)
78  dcu = 0;
79  else if (dcu > 2040)
80  dcu = 2040;
81  if (dcv < 0)
82  dcv = 0;
83  else if (dcv > 2040)
84  dcv = 2040;
85  for (y = 0; y < 8; y++) {
86  int x;
87  for (x = 0; x < 8; x++) {
88  dest_cb[x + y * linesize[1]] = dcu / 8;
89  dest_cr[x + y * linesize[2]] = dcv / 8;
90  }
91  }
92 }
93 
94 static void filter181(int16_t *data, int width, int height, int stride)
95 {
96  int x, y;
97 
98  /* horizontal filter */
99  for (y = 1; y < height - 1; y++) {
100  int prev_dc = data[0 + y * stride];
101 
102  for (x = 1; x < width - 1; x++) {
103  int dc;
104  dc = -prev_dc +
105  data[x + y * stride] * 8 -
106  data[x + 1 + y * stride];
107  dc = (dc * 10923 + 32768) >> 16;
108  prev_dc = data[x + y * stride];
109  data[x + y * stride] = dc;
110  }
111  }
112 
113  /* vertical filter */
114  for (x = 1; x < width - 1; x++) {
115  int prev_dc = data[x];
116 
117  for (y = 1; y < height - 1; y++) {
118  int dc;
119 
120  dc = -prev_dc +
121  data[x + y * stride] * 8 -
122  data[x + (y + 1) * stride];
123  dc = (dc * 10923 + 32768) >> 16;
124  prev_dc = data[x + y * stride];
125  data[x + y * stride] = dc;
126  }
127  }
128 }
129 
135 static void guess_dc(ERContext *s, int16_t *dc, int w,
136  int h, int stride, int is_luma)
137 {
138  int b_x, b_y;
139 
140  for (b_y = 0; b_y < h; b_y++) {
141  for (b_x = 0; b_x < w; b_x++) {
142  int color[4] = { 1024, 1024, 1024, 1024 };
143  int distance[4] = { 9999, 9999, 9999, 9999 };
144  int mb_index, error, j;
145  int64_t guess, weight_sum;
146  mb_index = (b_x >> is_luma) + (b_y >> is_luma) * s->mb_stride;
147  error = s->error_status_table[mb_index];
148 
149  if (IS_INTER(s->cur_pic.mb_type[mb_index]))
150  continue; // inter
151  if (!(error & ER_DC_ERROR))
152  continue; // dc-ok
153 
154  /* right block */
155  for (j = b_x + 1; j < w; j++) {
156  int mb_index_j = (j >> is_luma) + (b_y >> is_luma) * s->mb_stride;
157  int error_j = s->error_status_table[mb_index_j];
158  int intra_j = IS_INTRA(s->cur_pic.mb_type[mb_index_j]);
159  if (intra_j == 0 || !(error_j & ER_DC_ERROR)) {
160  color[0] = dc[j + b_y * stride];
161  distance[0] = j - b_x;
162  break;
163  }
164  }
165 
166  /* left block */
167  for (j = b_x - 1; j >= 0; j--) {
168  int mb_index_j = (j >> is_luma) + (b_y >> is_luma) * s->mb_stride;
169  int error_j = s->error_status_table[mb_index_j];
170  int intra_j = IS_INTRA(s->cur_pic.mb_type[mb_index_j]);
171  if (intra_j == 0 || !(error_j & ER_DC_ERROR)) {
172  color[1] = dc[j + b_y * stride];
173  distance[1] = b_x - j;
174  break;
175  }
176  }
177 
178  /* bottom block */
179  for (j = b_y + 1; j < h; j++) {
180  int mb_index_j = (b_x >> is_luma) + (j >> is_luma) * s->mb_stride;
181  int error_j = s->error_status_table[mb_index_j];
182  int intra_j = IS_INTRA(s->cur_pic.mb_type[mb_index_j]);
183 
184  if (intra_j == 0 || !(error_j & ER_DC_ERROR)) {
185  color[2] = dc[b_x + j * stride];
186  distance[2] = j - b_y;
187  break;
188  }
189  }
190 
191  /* top block */
192  for (j = b_y - 1; j >= 0; j--) {
193  int mb_index_j = (b_x >> is_luma) + (j >> is_luma) * s->mb_stride;
194  int error_j = s->error_status_table[mb_index_j];
195  int intra_j = IS_INTRA(s->cur_pic.mb_type[mb_index_j]);
196  if (intra_j == 0 || !(error_j & ER_DC_ERROR)) {
197  color[3] = dc[b_x + j * stride];
198  distance[3] = b_y - j;
199  break;
200  }
201  }
202 
203  weight_sum = 0;
204  guess = 0;
205  for (j = 0; j < 4; j++) {
206  int64_t weight = 256 * 256 * 256 * 16 / distance[j];
207  guess += weight * (int64_t) color[j];
208  weight_sum += weight;
209  }
210  guess = (guess + weight_sum / 2) / weight_sum;
211  dc[b_x + b_y * stride] = guess;
212  }
213  }
214 }
215 
221 static void h_block_filter(ERContext *s, uint8_t *dst, int w,
222  int h, int stride, int is_luma)
223 {
224  int b_x, b_y, mvx_stride, mvy_stride;
225  const uint8_t *cm = ff_crop_tab + MAX_NEG_CROP;
226  set_mv_strides(s, &mvx_stride, &mvy_stride);
227  mvx_stride >>= is_luma;
228  mvy_stride *= mvx_stride;
229 
230  for (b_y = 0; b_y < h; b_y++) {
231  for (b_x = 0; b_x < w - 1; b_x++) {
232  int y;
233  int left_status = s->error_status_table[( b_x >> is_luma) + (b_y >> is_luma) * s->mb_stride];
234  int right_status = s->error_status_table[((b_x + 1) >> is_luma) + (b_y >> is_luma) * s->mb_stride];
235  int left_intra = IS_INTRA(s->cur_pic.mb_type[( b_x >> is_luma) + (b_y >> is_luma) * s->mb_stride]);
236  int right_intra = IS_INTRA(s->cur_pic.mb_type[((b_x + 1) >> is_luma) + (b_y >> is_luma) * s->mb_stride]);
237  int left_damage = left_status & ER_MB_ERROR;
238  int right_damage = right_status & ER_MB_ERROR;
239  int offset = b_x * 8 + b_y * stride * 8;
240  int16_t *left_mv = s->cur_pic.motion_val[0][mvy_stride * b_y + mvx_stride * b_x];
241  int16_t *right_mv = s->cur_pic.motion_val[0][mvy_stride * b_y + mvx_stride * (b_x + 1)];
242  if (!(left_damage || right_damage))
243  continue; // both undamaged
244  if ((!left_intra) && (!right_intra) &&
245  FFABS(left_mv[0] - right_mv[0]) +
246  FFABS(left_mv[1] + right_mv[1]) < 2)
247  continue;
248 
249  for (y = 0; y < 8; y++) {
250  int a, b, c, d;
251 
252  a = dst[offset + 7 + y * stride] - dst[offset + 6 + y * stride];
253  b = dst[offset + 8 + y * stride] - dst[offset + 7 + y * stride];
254  c = dst[offset + 9 + y * stride] - dst[offset + 8 + y * stride];
255 
256  d = FFABS(b) - ((FFABS(a) + FFABS(c) + 1) >> 1);
257  d = FFMAX(d, 0);
258  if (b < 0)
259  d = -d;
260 
261  if (d == 0)
262  continue;
263 
264  if (!(left_damage && right_damage))
265  d = d * 16 / 9;
266 
267  if (left_damage) {
268  dst[offset + 7 + y * stride] = cm[dst[offset + 7 + y * stride] + ((d * 7) >> 4)];
269  dst[offset + 6 + y * stride] = cm[dst[offset + 6 + y * stride] + ((d * 5) >> 4)];
270  dst[offset + 5 + y * stride] = cm[dst[offset + 5 + y * stride] + ((d * 3) >> 4)];
271  dst[offset + 4 + y * stride] = cm[dst[offset + 4 + y * stride] + ((d * 1) >> 4)];
272  }
273  if (right_damage) {
274  dst[offset + 8 + y * stride] = cm[dst[offset + 8 + y * stride] - ((d * 7) >> 4)];
275  dst[offset + 9 + y * stride] = cm[dst[offset + 9 + y * stride] - ((d * 5) >> 4)];
276  dst[offset + 10+ y * stride] = cm[dst[offset + 10 + y * stride] - ((d * 3) >> 4)];
277  dst[offset + 11+ y * stride] = cm[dst[offset + 11 + y * stride] - ((d * 1) >> 4)];
278  }
279  }
280  }
281  }
282 }
283 
289 static void v_block_filter(ERContext *s, uint8_t *dst, int w, int h,
290  int stride, int is_luma)
291 {
292  int b_x, b_y, mvx_stride, mvy_stride;
293  const uint8_t *cm = ff_crop_tab + MAX_NEG_CROP;
294  set_mv_strides(s, &mvx_stride, &mvy_stride);
295  mvx_stride >>= is_luma;
296  mvy_stride *= mvx_stride;
297 
298  for (b_y = 0; b_y < h - 1; b_y++) {
299  for (b_x = 0; b_x < w; b_x++) {
300  int x;
301  int top_status = s->error_status_table[(b_x >> is_luma) + (b_y >> is_luma) * s->mb_stride];
302  int bottom_status = s->error_status_table[(b_x >> is_luma) + ((b_y + 1) >> is_luma) * s->mb_stride];
303  int top_intra = IS_INTRA(s->cur_pic.mb_type[(b_x >> is_luma) + ( b_y >> is_luma) * s->mb_stride]);
304  int bottom_intra = IS_INTRA(s->cur_pic.mb_type[(b_x >> is_luma) + ((b_y + 1) >> is_luma) * s->mb_stride]);
305  int top_damage = top_status & ER_MB_ERROR;
306  int bottom_damage = bottom_status & ER_MB_ERROR;
307  int offset = b_x * 8 + b_y * stride * 8;
308 
309  int16_t *top_mv = s->cur_pic.motion_val[0][mvy_stride * b_y + mvx_stride * b_x];
310  int16_t *bottom_mv = s->cur_pic.motion_val[0][mvy_stride * (b_y + 1) + mvx_stride * b_x];
311 
312  if (!(top_damage || bottom_damage))
313  continue; // both undamaged
314 
315  if ((!top_intra) && (!bottom_intra) &&
316  FFABS(top_mv[0] - bottom_mv[0]) +
317  FFABS(top_mv[1] + bottom_mv[1]) < 2)
318  continue;
319 
320  for (x = 0; x < 8; x++) {
321  int a, b, c, d;
322 
323  a = dst[offset + x + 7 * stride] - dst[offset + x + 6 * stride];
324  b = dst[offset + x + 8 * stride] - dst[offset + x + 7 * stride];
325  c = dst[offset + x + 9 * stride] - dst[offset + x + 8 * stride];
326 
327  d = FFABS(b) - ((FFABS(a) + FFABS(c) + 1) >> 1);
328  d = FFMAX(d, 0);
329  if (b < 0)
330  d = -d;
331 
332  if (d == 0)
333  continue;
334 
335  if (!(top_damage && bottom_damage))
336  d = d * 16 / 9;
337 
338  if (top_damage) {
339  dst[offset + x + 7 * stride] = cm[dst[offset + x + 7 * stride] + ((d * 7) >> 4)];
340  dst[offset + x + 6 * stride] = cm[dst[offset + x + 6 * stride] + ((d * 5) >> 4)];
341  dst[offset + x + 5 * stride] = cm[dst[offset + x + 5 * stride] + ((d * 3) >> 4)];
342  dst[offset + x + 4 * stride] = cm[dst[offset + x + 4 * stride] + ((d * 1) >> 4)];
343  }
344  if (bottom_damage) {
345  dst[offset + x + 8 * stride] = cm[dst[offset + x + 8 * stride] - ((d * 7) >> 4)];
346  dst[offset + x + 9 * stride] = cm[dst[offset + x + 9 * stride] - ((d * 5) >> 4)];
347  dst[offset + x + 10 * stride] = cm[dst[offset + x + 10 * stride] - ((d * 3) >> 4)];
348  dst[offset + x + 11 * stride] = cm[dst[offset + x + 11 * stride] - ((d * 1) >> 4)];
349  }
350  }
351  }
352  }
353 }
354 
355 static void guess_mv(ERContext *s)
356 {
357  uint8_t *fixed = s->er_temp_buffer;
358 #define MV_FROZEN 3
359 #define MV_CHANGED 2
360 #define MV_UNCHANGED 1
361  const int mb_stride = s->mb_stride;
362  const int mb_width = s->mb_width;
363  const int mb_height = s->mb_height;
364  int i, depth, num_avail;
365  int mb_x, mb_y, mot_step, mot_stride;
366 
367  set_mv_strides(s, &mot_step, &mot_stride);
368 
369  num_avail = 0;
370  for (i = 0; i < s->mb_num; i++) {
371  const int mb_xy = s->mb_index2xy[i];
372  int f = 0;
373  int error = s->error_status_table[mb_xy];
374 
375  if (IS_INTRA(s->cur_pic.mb_type[mb_xy]))
376  f = MV_FROZEN; // intra // FIXME check
377  if (!(error & ER_MV_ERROR))
378  f = MV_FROZEN; // inter with undamaged MV
379 
380  fixed[mb_xy] = f;
381  if (f == MV_FROZEN)
382  num_avail++;
383  }
384 
385  if ((!(s->avctx->error_concealment&FF_EC_GUESS_MVS)) ||
386  num_avail <= mb_width / 2) {
387  for (mb_y = 0; mb_y < s->mb_height; mb_y++) {
388  for (mb_x = 0; mb_x < s->mb_width; mb_x++) {
389  const int mb_xy = mb_x + mb_y * s->mb_stride;
390  int mv_dir = (s->last_pic.f && s->last_pic.f->data[0]) ? MV_DIR_FORWARD : MV_DIR_BACKWARD;
391 
392  if (IS_INTRA(s->cur_pic.mb_type[mb_xy]))
393  continue;
394  if (!(s->error_status_table[mb_xy] & ER_MV_ERROR))
395  continue;
396 
397  s->mv[0][0][0] = 0;
398  s->mv[0][0][1] = 0;
399  s->decode_mb(s->opaque, 0, mv_dir, MV_TYPE_16X16, &s->mv,
400  mb_x, mb_y, 0, 0);
401  }
402  }
403  return;
404  }
405 
406  for (depth = 0; ; depth++) {
407  int changed, pass, none_left;
408 
409  none_left = 1;
410  changed = 1;
411  for (pass = 0; (changed || pass < 2) && pass < 10; pass++) {
412  int mb_x, mb_y;
413  int score_sum = 0;
414 
415  changed = 0;
416  for (mb_y = 0; mb_y < s->mb_height; mb_y++) {
417  for (mb_x = 0; mb_x < s->mb_width; mb_x++) {
418  const int mb_xy = mb_x + mb_y * s->mb_stride;
419  int mv_predictor[8][2] = { { 0 } };
420  int ref[8] = { 0 };
421  int pred_count = 0;
422  int j;
423  int best_score = 256 * 256 * 256 * 64;
424  int best_pred = 0;
425  const int mot_index = (mb_x + mb_y * mot_stride) * mot_step;
426  int prev_x, prev_y, prev_ref;
427 
428  if ((mb_x ^ mb_y ^ pass) & 1)
429  continue;
430 
431  if (fixed[mb_xy] == MV_FROZEN)
432  continue;
433 
434  j = 0;
435  if (mb_x > 0 && fixed[mb_xy - 1] == MV_FROZEN)
436  j = 1;
437  if (mb_x + 1 < mb_width && fixed[mb_xy + 1] == MV_FROZEN)
438  j = 1;
439  if (mb_y > 0 && fixed[mb_xy - mb_stride] == MV_FROZEN)
440  j = 1;
441  if (mb_y + 1 < mb_height && fixed[mb_xy + mb_stride] == MV_FROZEN)
442  j = 1;
443  if (j == 0)
444  continue;
445 
446  j = 0;
447  if (mb_x > 0 && fixed[mb_xy - 1 ] == MV_CHANGED)
448  j = 1;
449  if (mb_x + 1 < mb_width && fixed[mb_xy + 1 ] == MV_CHANGED)
450  j = 1;
451  if (mb_y > 0 && fixed[mb_xy - mb_stride] == MV_CHANGED)
452  j = 1;
453  if (mb_y + 1 < mb_height && fixed[mb_xy + mb_stride] == MV_CHANGED)
454  j = 1;
455  if (j == 0 && pass > 1)
456  continue;
457 
458  none_left = 0;
459 
460  if (mb_x > 0 && fixed[mb_xy - 1]) {
461  mv_predictor[pred_count][0] =
462  s->cur_pic.motion_val[0][mot_index - mot_step][0];
463  mv_predictor[pred_count][1] =
464  s->cur_pic.motion_val[0][mot_index - mot_step][1];
465  ref[pred_count] =
466  s->cur_pic.ref_index[0][4 * (mb_xy - 1)];
467  pred_count++;
468  }
469  if (mb_x + 1 < mb_width && fixed[mb_xy + 1]) {
470  mv_predictor[pred_count][0] =
471  s->cur_pic.motion_val[0][mot_index + mot_step][0];
472  mv_predictor[pred_count][1] =
473  s->cur_pic.motion_val[0][mot_index + mot_step][1];
474  ref[pred_count] =
475  s->cur_pic.ref_index[0][4 * (mb_xy + 1)];
476  pred_count++;
477  }
478  if (mb_y > 0 && fixed[mb_xy - mb_stride]) {
479  mv_predictor[pred_count][0] =
480  s->cur_pic.motion_val[0][mot_index - mot_stride * mot_step][0];
481  mv_predictor[pred_count][1] =
482  s->cur_pic.motion_val[0][mot_index - mot_stride * mot_step][1];
483  ref[pred_count] =
484  s->cur_pic.ref_index[0][4 * (mb_xy - s->mb_stride)];
485  pred_count++;
486  }
487  if (mb_y + 1<mb_height && fixed[mb_xy + mb_stride]) {
488  mv_predictor[pred_count][0] =
489  s->cur_pic.motion_val[0][mot_index + mot_stride * mot_step][0];
490  mv_predictor[pred_count][1] =
491  s->cur_pic.motion_val[0][mot_index + mot_stride * mot_step][1];
492  ref[pred_count] =
493  s->cur_pic.ref_index[0][4 * (mb_xy + s->mb_stride)];
494  pred_count++;
495  }
496  if (pred_count == 0)
497  continue;
498 
499  if (pred_count > 1) {
500  int sum_x = 0, sum_y = 0, sum_r = 0;
501  int max_x, max_y, min_x, min_y, max_r, min_r;
502 
503  for (j = 0; j < pred_count; j++) {
504  sum_x += mv_predictor[j][0];
505  sum_y += mv_predictor[j][1];
506  sum_r += ref[j];
507  if (j && ref[j] != ref[j - 1])
508  goto skip_mean_and_median;
509  }
510 
511  /* mean */
512  mv_predictor[pred_count][0] = sum_x / j;
513  mv_predictor[pred_count][1] = sum_y / j;
514  ref[pred_count] = sum_r / j;
515 
516  /* median */
517  if (pred_count >= 3) {
518  min_y = min_x = min_r = 99999;
519  max_y = max_x = max_r = -99999;
520  } else {
521  min_x = min_y = max_x = max_y = min_r = max_r = 0;
522  }
523  for (j = 0; j < pred_count; j++) {
524  max_x = FFMAX(max_x, mv_predictor[j][0]);
525  max_y = FFMAX(max_y, mv_predictor[j][1]);
526  max_r = FFMAX(max_r, ref[j]);
527  min_x = FFMIN(min_x, mv_predictor[j][0]);
528  min_y = FFMIN(min_y, mv_predictor[j][1]);
529  min_r = FFMIN(min_r, ref[j]);
530  }
531  mv_predictor[pred_count + 1][0] = sum_x - max_x - min_x;
532  mv_predictor[pred_count + 1][1] = sum_y - max_y - min_y;
533  ref[pred_count + 1] = sum_r - max_r - min_r;
534 
535  if (pred_count == 4) {
536  mv_predictor[pred_count + 1][0] /= 2;
537  mv_predictor[pred_count + 1][1] /= 2;
538  ref[pred_count + 1] /= 2;
539  }
540  pred_count += 2;
541  }
542 
543 skip_mean_and_median:
544  /* zero MV */
545  pred_count++;
546 
547  if (!fixed[mb_xy]) {
548  if (s->avctx->codec_id == AV_CODEC_ID_H264) {
549  // FIXME
550  } else {
552  mb_y, 0);
553  }
554  if (!s->last_pic.motion_val[0] ||
555  !s->last_pic.ref_index[0])
556  goto skip_last_mv;
557  prev_x = s->last_pic.motion_val[0][mot_index][0];
558  prev_y = s->last_pic.motion_val[0][mot_index][1];
559  prev_ref = s->last_pic.ref_index[0][4 * mb_xy];
560  } else {
561  prev_x = s->cur_pic.motion_val[0][mot_index][0];
562  prev_y = s->cur_pic.motion_val[0][mot_index][1];
563  prev_ref = s->cur_pic.ref_index[0][4 * mb_xy];
564  }
565 
566  /* last MV */
567  mv_predictor[pred_count][0] = prev_x;
568  mv_predictor[pred_count][1] = prev_y;
569  ref[pred_count] = prev_ref;
570  pred_count++;
571 
572 skip_last_mv:
573 
574  for (j = 0; j < pred_count; j++) {
575  int *linesize = s->cur_pic.f->linesize;
576  int score = 0;
577  uint8_t *src = s->cur_pic.f->data[0] +
578  mb_x * 16 + mb_y * 16 * linesize[0];
579 
580  s->cur_pic.motion_val[0][mot_index][0] =
581  s->mv[0][0][0] = mv_predictor[j][0];
582  s->cur_pic.motion_val[0][mot_index][1] =
583  s->mv[0][0][1] = mv_predictor[j][1];
584 
585  // predictor intra or otherwise not available
586  if (ref[j] < 0)
587  continue;
588 
589  s->decode_mb(s->opaque, ref[j], MV_DIR_FORWARD,
590  MV_TYPE_16X16, &s->mv, mb_x, mb_y, 0, 0);
591 
592  if (mb_x > 0 && fixed[mb_xy - 1]) {
593  int k;
594  for (k = 0; k < 16; k++)
595  score += FFABS(src[k * linesize[0] - 1] -
596  src[k * linesize[0]]);
597  }
598  if (mb_x + 1 < mb_width && fixed[mb_xy + 1]) {
599  int k;
600  for (k = 0; k < 16; k++)
601  score += FFABS(src[k * linesize[0] + 15] -
602  src[k * linesize[0] + 16]);
603  }
604  if (mb_y > 0 && fixed[mb_xy - mb_stride]) {
605  int k;
606  for (k = 0; k < 16; k++)
607  score += FFABS(src[k - linesize[0]] - src[k]);
608  }
609  if (mb_y + 1 < mb_height && fixed[mb_xy + mb_stride]) {
610  int k;
611  for (k = 0; k < 16; k++)
612  score += FFABS(src[k + linesize[0] * 15] -
613  src[k + linesize[0] * 16]);
614  }
615 
616  if (score <= best_score) { // <= will favor the last MV
617  best_score = score;
618  best_pred = j;
619  }
620  }
621  score_sum += best_score;
622  s->mv[0][0][0] = mv_predictor[best_pred][0];
623  s->mv[0][0][1] = mv_predictor[best_pred][1];
624 
625  for (i = 0; i < mot_step; i++)
626  for (j = 0; j < mot_step; j++) {
627  s->cur_pic.motion_val[0][mot_index + i + j * mot_stride][0] = s->mv[0][0][0];
628  s->cur_pic.motion_val[0][mot_index + i + j * mot_stride][1] = s->mv[0][0][1];
629  }
630 
631  s->decode_mb(s->opaque, ref[best_pred], MV_DIR_FORWARD,
632  MV_TYPE_16X16, &s->mv, mb_x, mb_y, 0, 0);
633 
634 
635  if (s->mv[0][0][0] != prev_x || s->mv[0][0][1] != prev_y) {
636  fixed[mb_xy] = MV_CHANGED;
637  changed++;
638  } else
639  fixed[mb_xy] = MV_UNCHANGED;
640  }
641  }
642  }
643 
644  if (none_left)
645  return;
646 
647  for (i = 0; i < s->mb_num; i++) {
648  int mb_xy = s->mb_index2xy[i];
649  if (fixed[mb_xy])
650  fixed[mb_xy] = MV_FROZEN;
651  }
652  }
653 }
654 
656 {
657  int is_intra_likely, i, j, undamaged_count, skip_amount, mb_x, mb_y;
658 
659  if (!s->last_pic.f || !s->last_pic.f->data[0])
660  return 1; // no previous frame available -> use spatial prediction
661 
662  undamaged_count = 0;
663  for (i = 0; i < s->mb_num; i++) {
664  const int mb_xy = s->mb_index2xy[i];
665  const int error = s->error_status_table[mb_xy];
666  if (!((error & ER_DC_ERROR) && (error & ER_MV_ERROR)))
667  undamaged_count++;
668  }
669 
670  if (s->avctx->codec_id == AV_CODEC_ID_H264 && s->ref_count <= 0)
671  return 1;
672 
673  if (undamaged_count < 5)
674  return 0; // almost all MBs damaged -> use temporal prediction
675 
676 #if FF_API_XVMC
678  // prevent dsp.sad() check, that requires access to the image
680  s->avctx->xvmc_acceleration &&
682  return 1;
684 #endif /* FF_API_XVMC */
685 
686  skip_amount = FFMAX(undamaged_count / 50, 1); // check only up to 50 MBs
687  is_intra_likely = 0;
688 
689  j = 0;
690  for (mb_y = 0; mb_y < s->mb_height - 1; mb_y++) {
691  for (mb_x = 0; mb_x < s->mb_width; mb_x++) {
692  int error;
693  const int mb_xy = mb_x + mb_y * s->mb_stride;
694 
695  error = s->error_status_table[mb_xy];
696  if ((error & ER_DC_ERROR) && (error & ER_MV_ERROR))
697  continue; // skip damaged
698 
699  j++;
700  // skip a few to speed things up
701  if ((j % skip_amount) != 0)
702  continue;
703 
704  if (s->cur_pic.f->pict_type == AV_PICTURE_TYPE_I) {
705  int *linesize = s->cur_pic.f->linesize;
706  uint8_t *mb_ptr = s->cur_pic.f->data[0] +
707  mb_x * 16 + mb_y * 16 * linesize[0];
708  uint8_t *last_mb_ptr = s->last_pic.f->data[0] +
709  mb_x * 16 + mb_y * 16 * linesize[0];
710 
711  if (s->avctx->codec_id == AV_CODEC_ID_H264) {
712  // FIXME
713  } else {
714  ff_thread_await_progress(s->last_pic.tf, mb_y, 0);
715  }
716  is_intra_likely += s->mecc->sad[0](NULL, last_mb_ptr, mb_ptr,
717  linesize[0], 16);
718  is_intra_likely -= s->mecc->sad[0](NULL, last_mb_ptr,
719  last_mb_ptr + linesize[0] * 16,
720  linesize[0], 16);
721  } else {
722  if (IS_INTRA(s->cur_pic.mb_type[mb_xy]))
723  is_intra_likely++;
724  else
725  is_intra_likely--;
726  }
727  }
728  }
729  return is_intra_likely > 0;
730 }
731 
733 {
734  if (!s->avctx->error_concealment)
735  return;
736 
738  s->mb_stride * s->mb_height * sizeof(uint8_t));
739  s->error_count = 3 * s->mb_num;
740  s->error_occurred = 0;
741 }
742 
750 void ff_er_add_slice(ERContext *s, int startx, int starty,
751  int endx, int endy, int status)
752 {
753  const int start_i = av_clip(startx + starty * s->mb_width, 0, s->mb_num - 1);
754  const int end_i = av_clip(endx + endy * s->mb_width, 0, s->mb_num);
755  const int start_xy = s->mb_index2xy[start_i];
756  const int end_xy = s->mb_index2xy[end_i];
757  int mask = -1;
758 
759  if (s->avctx->hwaccel)
760  return;
761 
762  if (start_i > end_i || start_xy > end_xy) {
764  "internal error, slice end before start\n");
765  return;
766  }
767 
768  if (!s->avctx->error_concealment)
769  return;
770 
771  mask &= ~VP_START;
772  if (status & (ER_AC_ERROR | ER_AC_END)) {
773  mask &= ~(ER_AC_ERROR | ER_AC_END);
774  s->error_count -= end_i - start_i + 1;
775  }
776  if (status & (ER_DC_ERROR | ER_DC_END)) {
777  mask &= ~(ER_DC_ERROR | ER_DC_END);
778  s->error_count -= end_i - start_i + 1;
779  }
780  if (status & (ER_MV_ERROR | ER_MV_END)) {
781  mask &= ~(ER_MV_ERROR | ER_MV_END);
782  s->error_count -= end_i - start_i + 1;
783  }
784 
785  if (status & ER_MB_ERROR) {
786  s->error_occurred = 1;
787  s->error_count = INT_MAX;
788  }
789 
790  if (mask == ~0x7F) {
791  memset(&s->error_status_table[start_xy], 0,
792  (end_xy - start_xy) * sizeof(uint8_t));
793  } else {
794  int i;
795  for (i = start_xy; i < end_xy; i++)
796  s->error_status_table[i] &= mask;
797  }
798 
799  if (end_i == s->mb_num)
800  s->error_count = INT_MAX;
801  else {
802  s->error_status_table[end_xy] &= mask;
803  s->error_status_table[end_xy] |= status;
804  }
805 
806  s->error_status_table[start_xy] |= VP_START;
807 
808  if (start_xy > 0 && s->avctx->thread_count <= 1 &&
809  s->avctx->skip_top * s->mb_width < start_i) {
810  int prev_status = s->error_status_table[s->mb_index2xy[start_i - 1]];
811 
812  prev_status &= ~ VP_START;
813  if (prev_status != (ER_MV_END | ER_DC_END | ER_AC_END))
814  s->error_count = INT_MAX;
815  }
816 }
817 
819 {
820  int *linesize = s->cur_pic.f->linesize;
821  int i, mb_x, mb_y, error, error_type, dc_error, mv_error, ac_error;
822  int distance;
823  int threshold_part[4] = { 100, 100, 100 };
824  int threshold = 50;
825  int is_intra_likely;
826 
827  /* We do not support ER of field pictures yet,
828  * though it should not crash if enabled. */
829  if (!s->avctx->error_concealment || s->error_count == 0 ||
830  s->avctx->hwaccel ||
831  !s->cur_pic.f ||
832  s->cur_pic.field_picture ||
833  s->error_count == 3 * s->mb_width *
834  (s->avctx->skip_top + s->avctx->skip_bottom)) {
835  return;
836  };
837 
838  if (!s->cur_pic.motion_val[0] || !s->cur_pic.ref_index[0]) {
839  av_log(s->avctx, AV_LOG_ERROR, "MVs not available, ER not possible.\n");
840  return;
841  }
842 
843  if (s->avctx->debug & FF_DEBUG_ER) {
844  for (mb_y = 0; mb_y < s->mb_height; mb_y++) {
845  for (mb_x = 0; mb_x < s->mb_width; mb_x++) {
846  int status = s->error_status_table[mb_x + mb_y * s->mb_stride];
847 
848  av_log(s->avctx, AV_LOG_DEBUG, "%2X ", status);
849  }
850  av_log(s->avctx, AV_LOG_DEBUG, "\n");
851  }
852  }
853 
854  /* handle overlapping slices */
855  for (error_type = 1; error_type <= 3; error_type++) {
856  int end_ok = 0;
857 
858  for (i = s->mb_num - 1; i >= 0; i--) {
859  const int mb_xy = s->mb_index2xy[i];
860  int error = s->error_status_table[mb_xy];
861 
862  if (error & (1 << error_type))
863  end_ok = 1;
864  if (error & (8 << error_type))
865  end_ok = 1;
866 
867  if (!end_ok)
868  s->error_status_table[mb_xy] |= 1 << error_type;
869 
870  if (error & VP_START)
871  end_ok = 0;
872  }
873  }
874 
875  /* handle slices with partitions of different length */
876  if (s->partitioned_frame) {
877  int end_ok = 0;
878 
879  for (i = s->mb_num - 1; i >= 0; i--) {
880  const int mb_xy = s->mb_index2xy[i];
881  int error = s->error_status_table[mb_xy];
882 
883  if (error & ER_AC_END)
884  end_ok = 0;
885  if ((error & ER_MV_END) ||
886  (error & ER_DC_END) ||
887  (error & ER_AC_ERROR))
888  end_ok = 1;
889 
890  if (!end_ok)
891  s->error_status_table[mb_xy]|= ER_AC_ERROR;
892 
893  if (error & VP_START)
894  end_ok = 0;
895  }
896  }
897 
898  /* handle missing slices */
899  if (s->avctx->err_recognition & AV_EF_EXPLODE) {
900  int end_ok = 1;
901 
902  // FIXME + 100 hack
903  for (i = s->mb_num - 2; i >= s->mb_width + 100; i--) {
904  const int mb_xy = s->mb_index2xy[i];
905  int error1 = s->error_status_table[mb_xy];
906  int error2 = s->error_status_table[s->mb_index2xy[i + 1]];
907 
908  if (error1 & VP_START)
909  end_ok = 1;
910 
911  if (error2 == (VP_START | ER_MB_ERROR | ER_MB_END) &&
912  error1 != (VP_START | ER_MB_ERROR | ER_MB_END) &&
913  ((error1 & ER_AC_END) || (error1 & ER_DC_END) ||
914  (error1 & ER_MV_END))) {
915  // end & uninit
916  end_ok = 0;
917  }
918 
919  if (!end_ok)
920  s->error_status_table[mb_xy] |= ER_MB_ERROR;
921  }
922  }
923 
924  /* backward mark errors */
925  distance = 9999999;
926  for (error_type = 1; error_type <= 3; error_type++) {
927  for (i = s->mb_num - 1; i >= 0; i--) {
928  const int mb_xy = s->mb_index2xy[i];
929  int error = s->error_status_table[mb_xy];
930 
931  if (!s->mbskip_table[mb_xy]) // FIXME partition specific
932  distance++;
933  if (error & (1 << error_type))
934  distance = 0;
935 
936  if (s->partitioned_frame) {
937  if (distance < threshold_part[error_type - 1])
938  s->error_status_table[mb_xy] |= 1 << error_type;
939  } else {
940  if (distance < threshold)
941  s->error_status_table[mb_xy] |= 1 << error_type;
942  }
943 
944  if (error & VP_START)
945  distance = 9999999;
946  }
947  }
948 
949  /* forward mark errors */
950  error = 0;
951  for (i = 0; i < s->mb_num; i++) {
952  const int mb_xy = s->mb_index2xy[i];
953  int old_error = s->error_status_table[mb_xy];
954 
955  if (old_error & VP_START) {
956  error = old_error & ER_MB_ERROR;
957  } else {
958  error |= old_error & ER_MB_ERROR;
959  s->error_status_table[mb_xy] |= error;
960  }
961  }
962 
963  /* handle not partitioned case */
964  if (!s->partitioned_frame) {
965  for (i = 0; i < s->mb_num; i++) {
966  const int mb_xy = s->mb_index2xy[i];
967  error = s->error_status_table[mb_xy];
968  if (error & ER_MB_ERROR)
969  error |= ER_MB_ERROR;
970  s->error_status_table[mb_xy] = error;
971  }
972  }
973 
974  dc_error = ac_error = mv_error = 0;
975  for (i = 0; i < s->mb_num; i++) {
976  const int mb_xy = s->mb_index2xy[i];
977  error = s->error_status_table[mb_xy];
978  if (error & ER_DC_ERROR)
979  dc_error++;
980  if (error & ER_AC_ERROR)
981  ac_error++;
982  if (error & ER_MV_ERROR)
983  mv_error++;
984  }
985  av_log(s->avctx, AV_LOG_INFO, "concealing %d DC, %d AC, %d MV errors\n",
986  dc_error, ac_error, mv_error);
987 
988  is_intra_likely = is_intra_more_likely(s);
989 
990  /* set unknown mb-type to most likely */
991  for (i = 0; i < s->mb_num; i++) {
992  const int mb_xy = s->mb_index2xy[i];
993  error = s->error_status_table[mb_xy];
994  if (!((error & ER_DC_ERROR) && (error & ER_MV_ERROR)))
995  continue;
996 
997  if (is_intra_likely)
998  s->cur_pic.mb_type[mb_xy] = MB_TYPE_INTRA4x4;
999  else
1000  s->cur_pic.mb_type[mb_xy] = MB_TYPE_16x16 | MB_TYPE_L0;
1001  }
1002 
1003  // change inter to intra blocks if no reference frames are available
1004  if (!(s->last_pic.f && s->last_pic.f->data[0]) &&
1005  !(s->next_pic.f && s->next_pic.f->data[0]))
1006  for (i = 0; i < s->mb_num; i++) {
1007  const int mb_xy = s->mb_index2xy[i];
1008  if (!IS_INTRA(s->cur_pic.mb_type[mb_xy]))
1009  s->cur_pic.mb_type[mb_xy] = MB_TYPE_INTRA4x4;
1010  }
1011 
1012  /* handle inter blocks with damaged AC */
1013  for (mb_y = 0; mb_y < s->mb_height; mb_y++) {
1014  for (mb_x = 0; mb_x < s->mb_width; mb_x++) {
1015  const int mb_xy = mb_x + mb_y * s->mb_stride;
1016  const int mb_type = s->cur_pic.mb_type[mb_xy];
1017  const int dir = !(s->last_pic.f && s->last_pic.f->data[0]);
1018  const int mv_dir = dir ? MV_DIR_BACKWARD : MV_DIR_FORWARD;
1019  int mv_type;
1020 
1021  error = s->error_status_table[mb_xy];
1022 
1023  if (IS_INTRA(mb_type))
1024  continue; // intra
1025  if (error & ER_MV_ERROR)
1026  continue; // inter with damaged MV
1027  if (!(error & ER_AC_ERROR))
1028  continue; // undamaged inter
1029 
1030  if (IS_8X8(mb_type)) {
1031  int mb_index = mb_x * 2 + mb_y * 2 * s->b8_stride;
1032  int j;
1033  mv_type = MV_TYPE_8X8;
1034  for (j = 0; j < 4; j++) {
1035  s->mv[0][j][0] = s->cur_pic.motion_val[dir][mb_index + (j & 1) + (j >> 1) * s->b8_stride][0];
1036  s->mv[0][j][1] = s->cur_pic.motion_val[dir][mb_index + (j & 1) + (j >> 1) * s->b8_stride][1];
1037  }
1038  } else {
1039  mv_type = MV_TYPE_16X16;
1040  s->mv[0][0][0] = s->cur_pic.motion_val[dir][mb_x * 2 + mb_y * 2 * s->b8_stride][0];
1041  s->mv[0][0][1] = s->cur_pic.motion_val[dir][mb_x * 2 + mb_y * 2 * s->b8_stride][1];
1042  }
1043 
1044  s->decode_mb(s->opaque, 0 /* FIXME h264 partitioned slices need this set */,
1045  mv_dir, mv_type, &s->mv, mb_x, mb_y, 0, 0);
1046  }
1047  }
1048 
1049  /* guess MVs */
1050  if (s->cur_pic.f->pict_type == AV_PICTURE_TYPE_B) {
1051  for (mb_y = 0; mb_y < s->mb_height; mb_y++) {
1052  for (mb_x = 0; mb_x < s->mb_width; mb_x++) {
1053  int xy = mb_x * 2 + mb_y * 2 * s->b8_stride;
1054  const int mb_xy = mb_x + mb_y * s->mb_stride;
1055  const int mb_type = s->cur_pic.mb_type[mb_xy];
1056  int mv_dir = MV_DIR_FORWARD | MV_DIR_BACKWARD;
1057 
1058  error = s->error_status_table[mb_xy];
1059 
1060  if (IS_INTRA(mb_type))
1061  continue;
1062  if (!(error & ER_MV_ERROR))
1063  continue; // inter with undamaged MV
1064  if (!(error & ER_AC_ERROR))
1065  continue; // undamaged inter
1066 
1067  if (!(s->last_pic.f && s->last_pic.f->data[0]))
1068  mv_dir &= ~MV_DIR_FORWARD;
1069  if (!(s->next_pic.f && s->next_pic.f->data[0]))
1070  mv_dir &= ~MV_DIR_BACKWARD;
1071 
1072  if (s->pp_time) {
1073  int time_pp = s->pp_time;
1074  int time_pb = s->pb_time;
1075 
1076  ff_thread_await_progress(s->next_pic.tf, mb_y, 0);
1077 
1078  s->mv[0][0][0] = s->next_pic.motion_val[0][xy][0] * time_pb / time_pp;
1079  s->mv[0][0][1] = s->next_pic.motion_val[0][xy][1] * time_pb / time_pp;
1080  s->mv[1][0][0] = s->next_pic.motion_val[0][xy][0] * (time_pb - time_pp) / time_pp;
1081  s->mv[1][0][1] = s->next_pic.motion_val[0][xy][1] * (time_pb - time_pp) / time_pp;
1082  } else {
1083  s->mv[0][0][0] = 0;
1084  s->mv[0][0][1] = 0;
1085  s->mv[1][0][0] = 0;
1086  s->mv[1][0][1] = 0;
1087  }
1088 
1089  s->decode_mb(s->opaque, 0, mv_dir, MV_TYPE_16X16, &s->mv,
1090  mb_x, mb_y, 0, 0);
1091  }
1092  }
1093  } else
1094  guess_mv(s);
1095 
1096 #if FF_API_XVMC
1098  /* the filters below are not XvMC compatible, skip them */
1099  if (CONFIG_MPEG_XVMC_DECODER && s->avctx->xvmc_acceleration)
1100  goto ec_clean;
1102 #endif /* FF_API_XVMC */
1103  /* fill DC for inter blocks */
1104  for (mb_y = 0; mb_y < s->mb_height; mb_y++) {
1105  for (mb_x = 0; mb_x < s->mb_width; mb_x++) {
1106  int dc, dcu, dcv, y, n;
1107  int16_t *dc_ptr;
1108  uint8_t *dest_y, *dest_cb, *dest_cr;
1109  const int mb_xy = mb_x + mb_y * s->mb_stride;
1110  const int mb_type = s->cur_pic.mb_type[mb_xy];
1111 
1112  error = s->error_status_table[mb_xy];
1113 
1114  if (IS_INTRA(mb_type) && s->partitioned_frame)
1115  continue;
1116  // if (error & ER_MV_ERROR)
1117  // continue; // inter data damaged FIXME is this good?
1118 
1119  dest_y = s->cur_pic.f->data[0] + mb_x * 16 + mb_y * 16 * linesize[0];
1120  dest_cb = s->cur_pic.f->data[1] + mb_x * 8 + mb_y * 8 * linesize[1];
1121  dest_cr = s->cur_pic.f->data[2] + mb_x * 8 + mb_y * 8 * linesize[2];
1122 
1123  dc_ptr = &s->dc_val[0][mb_x * 2 + mb_y * 2 * s->b8_stride];
1124  for (n = 0; n < 4; n++) {
1125  dc = 0;
1126  for (y = 0; y < 8; y++) {
1127  int x;
1128  for (x = 0; x < 8; x++)
1129  dc += dest_y[x + (n & 1) * 8 +
1130  (y + (n >> 1) * 8) * linesize[0]];
1131  }
1132  dc_ptr[(n & 1) + (n >> 1) * s->b8_stride] = (dc + 4) >> 3;
1133  }
1134 
1135  dcu = dcv = 0;
1136  for (y = 0; y < 8; y++) {
1137  int x;
1138  for (x = 0; x < 8; x++) {
1139  dcu += dest_cb[x + y * linesize[1]];
1140  dcv += dest_cr[x + y * linesize[2]];
1141  }
1142  }
1143  s->dc_val[1][mb_x + mb_y * s->mb_stride] = (dcu + 4) >> 3;
1144  s->dc_val[2][mb_x + mb_y * s->mb_stride] = (dcv + 4) >> 3;
1145  }
1146  }
1147 
1148  /* guess DC for damaged blocks */
1149  guess_dc(s, s->dc_val[0], s->mb_width * 2, s->mb_height * 2, s->b8_stride, 1);
1150  guess_dc(s, s->dc_val[1], s->mb_width, s->mb_height, s->mb_stride, 0);
1151  guess_dc(s, s->dc_val[2], s->mb_width, s->mb_height, s->mb_stride, 0);
1152 
1153  /* filter luma DC */
1154  filter181(s->dc_val[0], s->mb_width * 2, s->mb_height * 2, s->b8_stride);
1155 
1156  /* render DC only intra */
1157  for (mb_y = 0; mb_y < s->mb_height; mb_y++) {
1158  for (mb_x = 0; mb_x < s->mb_width; mb_x++) {
1159  uint8_t *dest_y, *dest_cb, *dest_cr;
1160  const int mb_xy = mb_x + mb_y * s->mb_stride;
1161  const int mb_type = s->cur_pic.mb_type[mb_xy];
1162 
1163  error = s->error_status_table[mb_xy];
1164 
1165  if (IS_INTER(mb_type))
1166  continue;
1167  if (!(error & ER_AC_ERROR))
1168  continue; // undamaged
1169 
1170  dest_y = s->cur_pic.f->data[0] + mb_x * 16 + mb_y * 16 * linesize[0];
1171  dest_cb = s->cur_pic.f->data[1] + mb_x * 8 + mb_y * 8 * linesize[1];
1172  dest_cr = s->cur_pic.f->data[2] + mb_x * 8 + mb_y * 8 * linesize[2];
1173 
1174  put_dc(s, dest_y, dest_cb, dest_cr, mb_x, mb_y);
1175  }
1176  }
1177 
1179  /* filter horizontal block boundaries */
1180  h_block_filter(s, s->cur_pic.f->data[0], s->mb_width * 2,
1181  s->mb_height * 2, linesize[0], 1);
1182  h_block_filter(s, s->cur_pic.f->data[1], s->mb_width,
1183  s->mb_height, linesize[1], 0);
1184  h_block_filter(s, s->cur_pic.f->data[2], s->mb_width,
1185  s->mb_height, linesize[2], 0);
1186 
1187  /* filter vertical block boundaries */
1188  v_block_filter(s, s->cur_pic.f->data[0], s->mb_width * 2,
1189  s->mb_height * 2, linesize[0], 1);
1190  v_block_filter(s, s->cur_pic.f->data[1], s->mb_width,
1191  s->mb_height, linesize[1], 0);
1192  v_block_filter(s, s->cur_pic.f->data[2], s->mb_width,
1193  s->mb_height, linesize[2], 0);
1194  }
1195 
1196 ec_clean:
1197  /* clean a few tables */
1198  for (i = 0; i < s->mb_num; i++) {
1199  const int mb_xy = s->mb_index2xy[i];
1200  int error = s->error_status_table[mb_xy];
1201 
1202  if (s->cur_pic.f->pict_type != AV_PICTURE_TYPE_B &&
1203  (error & (ER_DC_ERROR | ER_MV_ERROR | ER_AC_ERROR))) {
1204  s->mbskip_table[mb_xy] = 0;
1205  }
1206  s->mbintra_table[mb_xy] = 1;
1207  }
1208 
1209  memset(&s->cur_pic, 0, sizeof(ERPicture));
1210  memset(&s->last_pic, 0, sizeof(ERPicture));
1211  memset(&s->next_pic, 0, sizeof(ERPicture));
1212 }
MECmpContext * mecc
#define MV_CHANGED
#define ER_MB_END
static void put_dc(ERContext *s, uint8_t *dest_y, uint8_t *dest_cb, uint8_t *dest_cr, int mb_x, int mb_y)
Replace the current MB with a flat dc-only version.
void ff_er_frame_end(ERContext *s)
static void v_block_filter(ERContext *s, uint8_t *dst, int w, int h, int stride, int is_luma)
simple vertical deblocking filter used for error resilience
static void filter181(int16_t *data, int width, int height, int stride)
#define MB_TYPE_INTRA4x4
Definition: avcodec.h:775
#define VP_START
< current MB is the first after a resync marker
#define MAX_NEG_CROP
Definition: mathops.h:30
static void guess_mv(ERContext *s)
uint32_t * mb_type
ERPicture last_pic
mpegvideo header.
#define ER_MV_ERROR
void ff_thread_await_progress(ThreadFrame *f, int n, int field)
Wait for earlier decoding threads to finish reference pictures.
int stride
Definition: mace.c:144
#define MV_FROZEN
uint16_t pp_time
struct AVHWAccel * hwaccel
Hardware accelerator in use.
Definition: avcodec.h:2448
uint8_t
Multithreading support functions.
#define b
Definition: input.c:52
#define ER_MB_ERROR
ERPicture cur_pic
const char data[16]
Definition: mxf.c:70
#define ER_MV_END
static void guess_dc(ERContext *s, int16_t *dc, int w, int h, int stride, int is_luma)
guess the dc of blocks which do not have an undamaged dc
#define FF_DEBUG_ER
Definition: avcodec.h:2396
#define FF_EC_GUESS_MVS
Definition: avcodec.h:2370
#define cm
Definition: dvbsubdec.c:34
Libavcodec version macros.
#define AV_LOG_ERROR
Something went wrong and cannot losslessly be recovered.
Definition: log.h:123
void ff_er_add_slice(ERContext *s, int startx, int starty, int endx, int endy, int status)
Add a slice.
static const uint16_t mask[17]
Definition: lzw.c:38
int error_concealment
error concealment flags
Definition: avcodec.h:2369
#define AV_LOG_DEBUG
Stuff which is only useful for libav* developers.
Definition: log.h:144
void(* decode_mb)(void *opaque, int ref, int mv_dir, int mv_type, int(*mv)[2][4][2], int mb_x, int mb_y, int mb_intra, int mb_skipped)
void av_log(void *avcl, int level, const char *fmt,...)
Definition: log.c:169
ThreadFrame * tf
#define FFMAX(a, b)
Definition: common.h:55
uint8_t * mbintra_table
int * mb_index2xy
#define pass
Definition: fft_template.c:335
static float distance(float x, float y, int band)
uint8_t * error_status_table
common internal API header
#define ER_AC_ERROR
useful rectangle filling function
enum AVPictureType pict_type
Picture type of the frame.
Definition: frame.h:196
int err_recognition
Error recognition; may misdetect some more or less valid parts as errors.
Definition: avcodec.h:2422
uint8_t * er_temp_buffer
#define FFMIN(a, b)
Definition: common.h:57
#define FF_EC_DEBLOCK
Definition: avcodec.h:2371
#define ER_DC_END
uint16_t pb_time
#define FFABS(a)
Definition: common.h:52
#define AV_EF_EXPLODE
Definition: avcodec.h:2433
int skip_top
Number of macroblock rows at the top which are skipped.
Definition: avcodec.h:1659
int thread_count
thread count is used to decide how many independent tasks should be passed to execute() ...
Definition: avcodec.h:2556
if(ac->has_optimized_func)
#define MV_TYPE_16X16
1 vector for the whole mb
Definition: mpegvideo.h:388
NULL
Definition: eval.c:55
#define MV_DIR_BACKWARD
Definition: mpegvideo.h:385
static int width
Definition: utils.c:156
#define AV_LOG_INFO
Standard information.
Definition: log.h:134
Libavcodec external API header.
enum AVCodecID codec_id
Definition: avcodec.h:1067
ERPicture next_pic
int linesize[AV_NUM_DATA_POINTERS]
For video, size in bytes of each picture line.
Definition: frame.h:153
int debug
debug
Definition: avcodec.h:2378
#define MB_TYPE_16x16
Definition: avcodec.h:778
#define IS_INTER(a)
Definition: mpegutils.h:75
#define ER_DC_ERROR
AVCodecContext * avctx
#define MV_DIR_FORWARD
Definition: mpegvideo.h:384
int8_t * ref_index[2]
int skip_bottom
Number of macroblock rows at the bottom which are skipped.
Definition: avcodec.h:1666
uint8_t * data[AV_NUM_DATA_POINTERS]
pointer to the picture/channel planes.
Definition: frame.h:141
me_cmp_func sad[6]
Definition: me_cmp.h:41
uint8_t pi<< 24) CONV_FUNC_GROUP(AV_SAMPLE_FMT_FLT, float, AV_SAMPLE_FMT_U8, uint8_t,(*(constuint8_t *) pi-0x80)*(1.0f/(1<< 7))) CONV_FUNC_GROUP(AV_SAMPLE_FMT_DBL, double, AV_SAMPLE_FMT_U8, uint8_t,(*(constuint8_t *) pi-0x80)*(1.0/(1<< 7))) CONV_FUNC_GROUP(AV_SAMPLE_FMT_U8, uint8_t, AV_SAMPLE_FMT_S16, int16_t,(*(constint16_t *) pi >>8)+0x80) CONV_FUNC_GROUP(AV_SAMPLE_FMT_FLT, float, AV_SAMPLE_FMT_S16, int16_t,*(constint16_t *) pi *(1.0f/(1<< 15))) CONV_FUNC_GROUP(AV_SAMPLE_FMT_DBL, double, AV_SAMPLE_FMT_S16, int16_t,*(constint16_t *) pi *(1.0/(1<< 15))) CONV_FUNC_GROUP(AV_SAMPLE_FMT_U8, uint8_t, AV_SAMPLE_FMT_S32, int32_t,(*(constint32_t *) pi >>24)+0x80) CONV_FUNC_GROUP(AV_SAMPLE_FMT_FLT, float, AV_SAMPLE_FMT_S32, int32_t,*(constint32_t *) pi *(1.0f/(1U<< 31))) CONV_FUNC_GROUP(AV_SAMPLE_FMT_DBL, double, AV_SAMPLE_FMT_S32, int32_t,*(constint32_t *) pi *(1.0/(1U<< 31))) CONV_FUNC_GROUP(AV_SAMPLE_FMT_U8, uint8_t, AV_SAMPLE_FMT_FLT, float, av_clip_uint8(lrintf(*(constfloat *) pi *(1<< 7))+0x80)) CONV_FUNC_GROUP(AV_SAMPLE_FMT_S16, int16_t, AV_SAMPLE_FMT_FLT, float, av_clip_int16(lrintf(*(constfloat *) pi *(1<< 15)))) CONV_FUNC_GROUP(AV_SAMPLE_FMT_S32, int32_t, AV_SAMPLE_FMT_FLT, float, av_clipl_int32(llrintf(*(constfloat *) pi *(1U<< 31)))) CONV_FUNC_GROUP(AV_SAMPLE_FMT_U8, uint8_t, AV_SAMPLE_FMT_DBL, double, av_clip_uint8(lrint(*(constdouble *) pi *(1<< 7))+0x80)) CONV_FUNC_GROUP(AV_SAMPLE_FMT_S16, int16_t, AV_SAMPLE_FMT_DBL, double, av_clip_int16(lrint(*(constdouble *) pi *(1<< 15)))) CONV_FUNC_GROUP(AV_SAMPLE_FMT_S32, int32_t, AV_SAMPLE_FMT_DBL, double, av_clipl_int32(llrint(*(constdouble *) pi *(1U<< 31))))#defineSET_CONV_FUNC_GROUP(ofmt, ifmt) staticvoidset_generic_function(AudioConvert *ac){}voidff_audio_convert_free(AudioConvert **ac){if(!*ac) return;ff_dither_free(&(*ac) ->dc);av_freep(ac);}AudioConvert *ff_audio_convert_alloc(AVAudioResampleContext *avr, enumAVSampleFormatout_fmt, enumAVSampleFormatin_fmt, intchannels, intsample_rate, intapply_map){AudioConvert *ac;intin_planar, out_planar;ac=av_mallocz(sizeof(*ac));if(!ac) returnNULL;ac->avr=avr;ac->out_fmt=out_fmt;ac->in_fmt=in_fmt;ac->channels=channels;ac->apply_map=apply_map;if(avr->dither_method!=AV_RESAMPLE_DITHER_NONE &&av_get_packed_sample_fmt(out_fmt)==AV_SAMPLE_FMT_S16 &&av_get_bytes_per_sample(in_fmt)>2){ac->dc=ff_dither_alloc(avr, out_fmt, in_fmt, channels, sample_rate, apply_map);if(!ac->dc){av_free(ac);returnNULL;}returnac;}in_planar=ff_sample_fmt_is_planar(in_fmt, channels);out_planar=ff_sample_fmt_is_planar(out_fmt, channels);if(in_planar==out_planar){ac->func_type=CONV_FUNC_TYPE_FLAT;ac->planes=in_planar?ac->channels:1;}elseif(in_planar) ac->func_type=CONV_FUNC_TYPE_INTERLEAVE;elseac->func_type=CONV_FUNC_TYPE_DEINTERLEAVE;set_generic_function(ac);if(ARCH_AARCH64) ff_audio_convert_init_aarch64(ac);if(ARCH_ARM) ff_audio_convert_init_arm(ac);if(ARCH_X86) ff_audio_convert_init_x86(ac);returnac;}intff_audio_convert(AudioConvert *ac, AudioData *out, AudioData *in){intuse_generic=1;intlen=in->nb_samples;intp;if(ac->dc){av_dlog(ac->avr,"%dsamples-audio_convert:%sto%s(dithered)\n", len, av_get_sample_fmt_name(ac->in_fmt), av_get_sample_fmt_name(ac->out_fmt));returnff_convert_dither(ac-> dc
int height
Definition: gxfenc.c:72
int partitioned_frame
#define FF_DISABLE_DEPRECATION_WARNINGS
Definition: internal.h:76
#define MV_UNCHANGED
int16_t * dc_val[3]
Bi-dir predicted.
Definition: avutil.h:255
AVFrame * f
#define ff_crop_tab
static const uint8_t color[]
Definition: log.c:55
#define IS_INTRA(x, y)
static int is_intra_more_likely(ERContext *s)
int mv[2][4][2]
int16_t(*[2] motion_val)[2]
#define FF_ENABLE_DEPRECATION_WARNINGS
Definition: internal.h:77
#define IS_8X8(a)
Definition: mpegutils.h:85
void ff_er_frame_start(ERContext *s)
#define CONFIG_MPEG_XVMC_DECODER
Definition: config.h:542
static void h_block_filter(ERContext *s, uint8_t *dst, int w, int h, int stride, int is_luma)
simple horizontal deblocking filter used for error resilience
#define ER_AC_END
#define MV_TYPE_8X8
4 vectors (h263, mpeg4 4MV)
Definition: mpegvideo.h:389
uint8_t * mbskip_table
static void set_mv_strides(ERContext *s, int *mv_step, int *stride)
#define MB_TYPE_L0
Definition: avcodec.h:791