2 * Error resilience / concealment
4 * Copyright (c) 2002-2004 Michael Niedermayer <michaelni@gmx.at>
6 * This file is part of FFmpeg.
8 * FFmpeg 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.
13 * FFmpeg 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.
18 * You should have received a copy of the GNU Lesser General Public
19 * License along with FFmpeg; if not, write to the Free Software
20 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
24 * @file error_resilience.c
25 * Error resilience / concealment.
32 #include "mpegvideo.h"
35 static void decode_mb(MpegEncContext *s){
36 s->dest[0] = s->current_picture.data[0] + (s->mb_y * 16* s->linesize ) + s->mb_x * 16;
37 s->dest[1] = s->current_picture.data[1] + (s->mb_y * 8 * s->uvlinesize) + s->mb_x * 8;
38 s->dest[2] = s->current_picture.data[2] + (s->mb_y * 8 * s->uvlinesize) + s->mb_x * 8;
40 MPV_decode_mb(s, s->block);
44 * replaces the current MB with a flat dc only version.
46 static void put_dc(MpegEncContext *s, uint8_t *dest_y, uint8_t *dest_cb, uint8_t *dest_cr, int mb_x, int mb_y)
48 int dc, dcu, dcv, y, i;
50 dc= s->dc_val[0][mb_x*2 + (i&1) + (mb_y*2 + (i>>1))*s->b8_stride];
52 else if(dc>2040) dc=2040;
56 dest_y[x + (i&1)*8 + (y + (i>>1)*8)*s->linesize]= dc/8;
60 dcu = s->dc_val[1][mb_x + mb_y*s->mb_stride];
61 dcv = s->dc_val[2][mb_x + mb_y*s->mb_stride];
63 else if(dcu>2040) dcu=2040;
65 else if(dcv>2040) dcv=2040;
69 dest_cb[x + y*(s->uvlinesize)]= dcu/8;
70 dest_cr[x + y*(s->uvlinesize)]= dcv/8;
75 static void filter181(int16_t *data, int width, int height, int stride){
78 /* horizontal filter */
79 for(y=1; y<height-1; y++){
80 int prev_dc= data[0 + y*stride];
82 for(x=1; x<width-1; x++){
86 + data[x + y*stride]*8
87 - data[x + 1 + y*stride];
88 dc= (dc*10923 + 32768)>>16;
89 prev_dc= data[x + y*stride];
90 data[x + y*stride]= dc;
95 for(x=1; x<width-1; x++){
98 for(y=1; y<height-1; y++){
102 + data[x + y *stride]*8
103 - data[x + (y+1)*stride];
104 dc= (dc*10923 + 32768)>>16;
105 prev_dc= data[x + y*stride];
106 data[x + y*stride]= dc;
112 * guess the dc of blocks which dont have a undamaged dc
113 * @param w width in 8 pixel blocks
114 * @param h height in 8 pixel blocks
116 static void guess_dc(MpegEncContext *s, int16_t *dc, int w, int h, int stride, int is_luma){
119 for(b_y=0; b_y<h; b_y++){
120 for(b_x=0; b_x<w; b_x++){
121 int color[4]={1024,1024,1024,1024};
122 int distance[4]={9999,9999,9999,9999};
123 int mb_index, error, j;
124 int64_t guess, weight_sum;
126 mb_index= (b_x>>is_luma) + (b_y>>is_luma)*s->mb_stride;
128 error= s->error_status_table[mb_index];
130 if(IS_INTER(s->current_picture.mb_type[mb_index])) continue; //inter
131 if(!(error&DC_ERROR)) continue; //dc-ok
134 for(j=b_x+1; j<w; j++){
135 int mb_index_j= (j>>is_luma) + (b_y>>is_luma)*s->mb_stride;
136 int error_j= s->error_status_table[mb_index_j];
137 int intra_j= IS_INTRA(s->current_picture.mb_type[mb_index_j]);
138 if(intra_j==0 || !(error_j&DC_ERROR)){
139 color[0]= dc[j + b_y*stride];
146 for(j=b_x-1; j>=0; j--){
147 int mb_index_j= (j>>is_luma) + (b_y>>is_luma)*s->mb_stride;
148 int error_j= s->error_status_table[mb_index_j];
149 int intra_j= IS_INTRA(s->current_picture.mb_type[mb_index_j]);
150 if(intra_j==0 || !(error_j&DC_ERROR)){
151 color[1]= dc[j + b_y*stride];
158 for(j=b_y+1; j<h; j++){
159 int mb_index_j= (b_x>>is_luma) + (j>>is_luma)*s->mb_stride;
160 int error_j= s->error_status_table[mb_index_j];
161 int intra_j= IS_INTRA(s->current_picture.mb_type[mb_index_j]);
162 if(intra_j==0 || !(error_j&DC_ERROR)){
163 color[2]= dc[b_x + j*stride];
170 for(j=b_y-1; j>=0; j--){
171 int mb_index_j= (b_x>>is_luma) + (j>>is_luma)*s->mb_stride;
172 int error_j= s->error_status_table[mb_index_j];
173 int intra_j= IS_INTRA(s->current_picture.mb_type[mb_index_j]);
174 if(intra_j==0 || !(error_j&DC_ERROR)){
175 color[3]= dc[b_x + j*stride];
184 int64_t weight= 256*256*256*16/distance[j];
185 guess+= weight*(int64_t)color[j];
188 guess= (guess + weight_sum/2) / weight_sum;
190 dc[b_x + b_y*stride]= guess;
196 * simple horizontal deblocking filter used for error resilience
197 * @param w width in 8 pixel blocks
198 * @param h height in 8 pixel blocks
200 static void h_block_filter(MpegEncContext *s, uint8_t *dst, int w, int h, int stride, int is_luma){
202 uint8_t *cm = ff_cropTbl + MAX_NEG_CROP;
204 for(b_y=0; b_y<h; b_y++){
205 for(b_x=0; b_x<w-1; b_x++){
207 int left_status = s->error_status_table[( b_x >>is_luma) + (b_y>>is_luma)*s->mb_stride];
208 int right_status= s->error_status_table[((b_x+1)>>is_luma) + (b_y>>is_luma)*s->mb_stride];
209 int left_intra= IS_INTRA(s->current_picture.mb_type [( b_x >>is_luma) + (b_y>>is_luma)*s->mb_stride]);
210 int right_intra= IS_INTRA(s->current_picture.mb_type [((b_x+1)>>is_luma) + (b_y>>is_luma)*s->mb_stride]);
211 int left_damage = left_status&(DC_ERROR|AC_ERROR|MV_ERROR);
212 int right_damage= right_status&(DC_ERROR|AC_ERROR|MV_ERROR);
213 int offset= b_x*8 + b_y*stride*8;
214 int16_t *left_mv= s->current_picture.motion_val[0][s->b8_stride*(b_y<<(1-is_luma)) + ( b_x <<(1-is_luma))];
215 int16_t *right_mv= s->current_picture.motion_val[0][s->b8_stride*(b_y<<(1-is_luma)) + ((b_x+1)<<(1-is_luma))];
217 if(!(left_damage||right_damage)) continue; // both undamaged
219 if( (!left_intra) && (!right_intra)
220 && FFABS(left_mv[0]-right_mv[0]) + FFABS(left_mv[1]+right_mv[1]) < 2) continue;
225 a= dst[offset + 7 + y*stride] - dst[offset + 6 + y*stride];
226 b= dst[offset + 8 + y*stride] - dst[offset + 7 + y*stride];
227 c= dst[offset + 9 + y*stride] - dst[offset + 8 + y*stride];
229 d= FFABS(b) - ((FFABS(a) + FFABS(c) + 1)>>1);
235 if(!(left_damage && right_damage))
239 dst[offset + 7 + y*stride] = cm[dst[offset + 7 + y*stride] + ((d*7)>>4)];
240 dst[offset + 6 + y*stride] = cm[dst[offset + 6 + y*stride] + ((d*5)>>4)];
241 dst[offset + 5 + y*stride] = cm[dst[offset + 5 + y*stride] + ((d*3)>>4)];
242 dst[offset + 4 + y*stride] = cm[dst[offset + 4 + y*stride] + ((d*1)>>4)];
245 dst[offset + 8 + y*stride] = cm[dst[offset + 8 + y*stride] - ((d*7)>>4)];
246 dst[offset + 9 + y*stride] = cm[dst[offset + 9 + y*stride] - ((d*5)>>4)];
247 dst[offset + 10+ y*stride] = cm[dst[offset +10 + y*stride] - ((d*3)>>4)];
248 dst[offset + 11+ y*stride] = cm[dst[offset +11 + y*stride] - ((d*1)>>4)];
256 * simple vertical deblocking filter used for error resilience
257 * @param w width in 8 pixel blocks
258 * @param h height in 8 pixel blocks
260 static void v_block_filter(MpegEncContext *s, uint8_t *dst, int w, int h, int stride, int is_luma){
262 uint8_t *cm = ff_cropTbl + MAX_NEG_CROP;
264 for(b_y=0; b_y<h-1; b_y++){
265 for(b_x=0; b_x<w; b_x++){
267 int top_status = s->error_status_table[(b_x>>is_luma) + ( b_y >>is_luma)*s->mb_stride];
268 int bottom_status= s->error_status_table[(b_x>>is_luma) + ((b_y+1)>>is_luma)*s->mb_stride];
269 int top_intra= IS_INTRA(s->current_picture.mb_type [(b_x>>is_luma) + ( b_y >>is_luma)*s->mb_stride]);
270 int bottom_intra= IS_INTRA(s->current_picture.mb_type [(b_x>>is_luma) + ((b_y+1)>>is_luma)*s->mb_stride]);
271 int top_damage = top_status&(DC_ERROR|AC_ERROR|MV_ERROR);
272 int bottom_damage= bottom_status&(DC_ERROR|AC_ERROR|MV_ERROR);
273 int offset= b_x*8 + b_y*stride*8;
274 int16_t *top_mv= s->current_picture.motion_val[0][s->b8_stride*( b_y <<(1-is_luma)) + (b_x<<(1-is_luma))];
275 int16_t *bottom_mv= s->current_picture.motion_val[0][s->b8_stride*((b_y+1)<<(1-is_luma)) + (b_x<<(1-is_luma))];
277 if(!(top_damage||bottom_damage)) continue; // both undamaged
279 if( (!top_intra) && (!bottom_intra)
280 && FFABS(top_mv[0]-bottom_mv[0]) + FFABS(top_mv[1]+bottom_mv[1]) < 2) continue;
285 a= dst[offset + x + 7*stride] - dst[offset + x + 6*stride];
286 b= dst[offset + x + 8*stride] - dst[offset + x + 7*stride];
287 c= dst[offset + x + 9*stride] - dst[offset + x + 8*stride];
289 d= FFABS(b) - ((FFABS(a) + FFABS(c)+1)>>1);
295 if(!(top_damage && bottom_damage))
299 dst[offset + x + 7*stride] = cm[dst[offset + x + 7*stride] + ((d*7)>>4)];
300 dst[offset + x + 6*stride] = cm[dst[offset + x + 6*stride] + ((d*5)>>4)];
301 dst[offset + x + 5*stride] = cm[dst[offset + x + 5*stride] + ((d*3)>>4)];
302 dst[offset + x + 4*stride] = cm[dst[offset + x + 4*stride] + ((d*1)>>4)];
305 dst[offset + x + 8*stride] = cm[dst[offset + x + 8*stride] - ((d*7)>>4)];
306 dst[offset + x + 9*stride] = cm[dst[offset + x + 9*stride] - ((d*5)>>4)];
307 dst[offset + x + 10*stride] = cm[dst[offset + x + 10*stride] - ((d*3)>>4)];
308 dst[offset + x + 11*stride] = cm[dst[offset + x + 11*stride] - ((d*1)>>4)];
315 static void guess_mv(MpegEncContext *s){
316 uint8_t fixed[s->mb_stride * s->mb_height];
319 #define MV_UNCHANGED 1
320 const int mb_stride = s->mb_stride;
321 const int mb_width = s->mb_width;
322 const int mb_height= s->mb_height;
323 int i, depth, num_avail;
327 for(i=0; i<s->mb_num; i++){
328 const int mb_xy= s->mb_index2xy[ i ];
330 int error= s->error_status_table[mb_xy];
332 if(IS_INTRA(s->current_picture.mb_type[mb_xy])) f=MV_FROZEN; //intra //FIXME check
333 if(!(error&MV_ERROR)) f=MV_FROZEN; //inter with undamaged MV
340 if((!(s->avctx->error_concealment&FF_EC_GUESS_MVS)) || num_avail <= mb_width/2){
341 for(mb_y=0; mb_y<s->mb_height; mb_y++){
342 for(mb_x=0; mb_x<s->mb_width; mb_x++){
343 const int mb_xy= mb_x + mb_y*s->mb_stride;
345 if(IS_INTRA(s->current_picture.mb_type[mb_xy])) continue;
346 if(!(s->error_status_table[mb_xy]&MV_ERROR)) continue;
348 s->mv_dir = MV_DIR_FORWARD;
350 s->mv_type = MV_TYPE_16X16;
353 s->dsp.clear_blocks(s->block[0]);
365 for(depth=0;; depth++){
366 int changed, pass, none_left;
370 for(pass=0; (changed || pass<2) && pass<10; pass++){
375 for(mb_y=0; mb_y<s->mb_height; mb_y++){
376 for(mb_x=0; mb_x<s->mb_width; mb_x++){
377 const int mb_xy= mb_x + mb_y*s->mb_stride;
378 int mv_predictor[8][2]={{0}};
381 int best_score=256*256*256*64;
383 const int mot_stride= s->b8_stride;
384 const int mot_index= mb_x*2 + mb_y*2*mot_stride;
385 int prev_x= s->current_picture.motion_val[0][mot_index][0];
386 int prev_y= s->current_picture.motion_val[0][mot_index][1];
388 if((mb_x^mb_y^pass)&1) continue;
390 if(fixed[mb_xy]==MV_FROZEN) continue;
391 assert(!IS_INTRA(s->current_picture.mb_type[mb_xy]));
392 assert(s->last_picture_ptr && s->last_picture_ptr->data[0]);
395 if(mb_x>0 && fixed[mb_xy-1 ]==MV_FROZEN) j=1;
396 if(mb_x+1<mb_width && fixed[mb_xy+1 ]==MV_FROZEN) j=1;
397 if(mb_y>0 && fixed[mb_xy-mb_stride]==MV_FROZEN) j=1;
398 if(mb_y+1<mb_height && fixed[mb_xy+mb_stride]==MV_FROZEN) j=1;
402 if(mb_x>0 && fixed[mb_xy-1 ]==MV_CHANGED) j=1;
403 if(mb_x+1<mb_width && fixed[mb_xy+1 ]==MV_CHANGED) j=1;
404 if(mb_y>0 && fixed[mb_xy-mb_stride]==MV_CHANGED) j=1;
405 if(mb_y+1<mb_height && fixed[mb_xy+mb_stride]==MV_CHANGED) j=1;
406 if(j==0 && pass>1) continue;
410 if(mb_x>0 && fixed[mb_xy-1]){
411 mv_predictor[pred_count][0]= s->current_picture.motion_val[0][mot_index - 2][0];
412 mv_predictor[pred_count][1]= s->current_picture.motion_val[0][mot_index - 2][1];
415 if(mb_x+1<mb_width && fixed[mb_xy+1]){
416 mv_predictor[pred_count][0]= s->current_picture.motion_val[0][mot_index + 2][0];
417 mv_predictor[pred_count][1]= s->current_picture.motion_val[0][mot_index + 2][1];
420 if(mb_y>0 && fixed[mb_xy-mb_stride]){
421 mv_predictor[pred_count][0]= s->current_picture.motion_val[0][mot_index - mot_stride*2][0];
422 mv_predictor[pred_count][1]= s->current_picture.motion_val[0][mot_index - mot_stride*2][1];
425 if(mb_y+1<mb_height && fixed[mb_xy+mb_stride]){
426 mv_predictor[pred_count][0]= s->current_picture.motion_val[0][mot_index + mot_stride*2][0];
427 mv_predictor[pred_count][1]= s->current_picture.motion_val[0][mot_index + mot_stride*2][1];
430 if(pred_count==0) continue;
433 int sum_x=0, sum_y=0;
434 int max_x, max_y, min_x, min_y;
436 for(j=0; j<pred_count; j++){
437 sum_x+= mv_predictor[j][0];
438 sum_y+= mv_predictor[j][1];
442 mv_predictor[pred_count][0] = sum_x/j;
443 mv_predictor[pred_count][1] = sum_y/j;
450 min_x=min_y=max_x=max_y=0;
452 for(j=0; j<pred_count; j++){
453 max_x= FFMAX(max_x, mv_predictor[j][0]);
454 max_y= FFMAX(max_y, mv_predictor[j][1]);
455 min_x= FFMIN(min_x, mv_predictor[j][0]);
456 min_y= FFMIN(min_y, mv_predictor[j][1]);
458 mv_predictor[pred_count+1][0] = sum_x - max_x - min_x;
459 mv_predictor[pred_count+1][1] = sum_y - max_y - min_y;
462 mv_predictor[pred_count+1][0] /= 2;
463 mv_predictor[pred_count+1][1] /= 2;
472 mv_predictor[pred_count][0]= s->current_picture.motion_val[0][mot_index][0];
473 mv_predictor[pred_count][1]= s->current_picture.motion_val[0][mot_index][1];
476 s->mv_dir = MV_DIR_FORWARD;
478 s->mv_type = MV_TYPE_16X16;
481 s->dsp.clear_blocks(s->block[0]);
486 for(j=0; j<pred_count; j++){
488 uint8_t *src= s->current_picture.data[0] + mb_x*16 + mb_y*16*s->linesize;
490 s->current_picture.motion_val[0][mot_index][0]= s->mv[0][0][0]= mv_predictor[j][0];
491 s->current_picture.motion_val[0][mot_index][1]= s->mv[0][0][1]= mv_predictor[j][1];
495 if(mb_x>0 && fixed[mb_xy-1]){
498 score += FFABS(src[k*s->linesize-1 ]-src[k*s->linesize ]);
500 if(mb_x+1<mb_width && fixed[mb_xy+1]){
503 score += FFABS(src[k*s->linesize+15]-src[k*s->linesize+16]);
505 if(mb_y>0 && fixed[mb_xy-mb_stride]){
508 score += FFABS(src[k-s->linesize ]-src[k ]);
510 if(mb_y+1<mb_height && fixed[mb_xy+mb_stride]){
513 score += FFABS(src[k+s->linesize*15]-src[k+s->linesize*16]);
516 if(score <= best_score){ // <= will favor the last MV
521 score_sum+= best_score;
522 //FIXME no need to set s->current_picture.motion_val[0][mot_index][0] explicit
523 s->current_picture.motion_val[0][mot_index][0]= s->mv[0][0][0]= mv_predictor[best_pred][0];
524 s->current_picture.motion_val[0][mot_index][1]= s->mv[0][0][1]= mv_predictor[best_pred][1];
529 if(s->mv[0][0][0] != prev_x || s->mv[0][0][1] != prev_y){
530 fixed[mb_xy]=MV_CHANGED;
533 fixed[mb_xy]=MV_UNCHANGED;
537 // printf(".%d/%d", changed, score_sum); fflush(stdout);
543 for(i=0; i<s->mb_num; i++){
544 int mb_xy= s->mb_index2xy[i];
546 fixed[mb_xy]=MV_FROZEN;
548 // printf(":"); fflush(stdout);
552 static int is_intra_more_likely(MpegEncContext *s){
553 int is_intra_likely, i, j, undamaged_count, skip_amount, mb_x, mb_y;
555 if(s->last_picture_ptr==NULL) return 1; //no previous frame available -> use spatial prediction
558 for(i=0; i<s->mb_num; i++){
559 const int mb_xy= s->mb_index2xy[i];
560 const int error= s->error_status_table[mb_xy];
561 if(!((error&DC_ERROR) && (error&MV_ERROR)))
565 if(undamaged_count < 5) return 0; //allmost all MBs damaged -> use temporal prediction
567 skip_amount= FFMAX(undamaged_count/50, 1); //check only upto 50 MBs
571 for(mb_y= 0; mb_y<s->mb_height-1; mb_y++){
572 for(mb_x= 0; mb_x<s->mb_width; mb_x++){
574 const int mb_xy= mb_x + mb_y*s->mb_stride;
576 error= s->error_status_table[mb_xy];
577 if((error&DC_ERROR) && (error&MV_ERROR))
578 continue; //skip damaged
581 if((j%skip_amount) != 0) continue; //skip a few to speed things up
583 if(s->pict_type==I_TYPE){
584 uint8_t *mb_ptr = s->current_picture.data[0] + mb_x*16 + mb_y*16*s->linesize;
585 uint8_t *last_mb_ptr= s->last_picture.data [0] + mb_x*16 + mb_y*16*s->linesize;
587 is_intra_likely += s->dsp.sad[0](NULL, last_mb_ptr, mb_ptr , s->linesize, 16);
588 is_intra_likely -= s->dsp.sad[0](NULL, last_mb_ptr, last_mb_ptr+s->linesize*16, s->linesize, 16);
590 if(IS_INTRA(s->current_picture.mb_type[mb_xy]))
597 //printf("is_intra_likely: %d type:%d\n", is_intra_likely, s->pict_type);
598 return is_intra_likely > 0;
601 void ff_er_frame_start(MpegEncContext *s){
602 if(!s->error_resilience) return;
604 memset(s->error_status_table, MV_ERROR|AC_ERROR|DC_ERROR|VP_START|AC_END|DC_END|MV_END, s->mb_stride*s->mb_height*sizeof(uint8_t));
605 s->error_count= 3*s->mb_num;
610 * @param endx x component of the last macroblock, can be -1 for the last of the previous line
611 * @param status the status at the end (MV_END, AC_ERROR, ...), it is assumed that no earlier end or
612 * error of the same type occured
614 void ff_er_add_slice(MpegEncContext *s, int startx, int starty, int endx, int endy, int status){
615 const int start_i= clip(startx + starty * s->mb_width , 0, s->mb_num-1);
616 const int end_i = clip(endx + endy * s->mb_width , 0, s->mb_num);
617 const int start_xy= s->mb_index2xy[start_i];
618 const int end_xy = s->mb_index2xy[end_i];
621 if(!s->error_resilience) return;
624 if(status & (AC_ERROR|AC_END)){
625 mask &= ~(AC_ERROR|AC_END);
626 s->error_count -= end_i - start_i + 1;
628 if(status & (DC_ERROR|DC_END)){
629 mask &= ~(DC_ERROR|DC_END);
630 s->error_count -= end_i - start_i + 1;
632 if(status & (MV_ERROR|MV_END)){
633 mask &= ~(MV_ERROR|MV_END);
634 s->error_count -= end_i - start_i + 1;
637 if(status & (AC_ERROR|DC_ERROR|MV_ERROR)) s->error_count= INT_MAX;
640 memset(&s->error_status_table[start_xy], 0, (end_xy - start_xy) * sizeof(uint8_t));
643 for(i=start_xy; i<end_xy; i++){
644 s->error_status_table[ i ] &= mask;
648 if(end_i == s->mb_num)
649 s->error_count= INT_MAX;
651 s->error_status_table[end_xy] &= mask;
652 s->error_status_table[end_xy] |= status;
655 s->error_status_table[start_xy] |= VP_START;
657 if(start_xy > 0 && s->avctx->thread_count <= 1 && s->avctx->skip_top*s->mb_width < start_i){
658 int prev_status= s->error_status_table[ s->mb_index2xy[start_i - 1] ];
660 prev_status &= ~ VP_START;
661 if(prev_status != (MV_END|DC_END|AC_END)) s->error_count= INT_MAX;
665 void ff_er_frame_end(MpegEncContext *s){
666 int i, mb_x, mb_y, error, error_type, dc_error, mv_error, ac_error;
668 int threshold_part[4]= {100,100,100};
671 int size = s->b8_stride * 2 * s->mb_height;
672 Picture *pic= s->current_picture_ptr;
674 if(!s->error_resilience || s->error_count==0 ||
675 s->error_count==3*s->mb_width*(s->avctx->skip_top + s->avctx->skip_bottom)) return;
677 if(s->current_picture.motion_val[0] == NULL){
678 av_log(s->avctx, AV_LOG_ERROR, "Warning MVs not available\n");
681 pic->ref_index[i]= av_mallocz(size * sizeof(uint8_t));
682 pic->motion_val_base[i]= av_mallocz((size+4) * 2 * sizeof(uint16_t));
683 pic->motion_val[i]= pic->motion_val_base[i]+4;
685 pic->motion_subsample_log2= 3;
686 s->current_picture= *s->current_picture_ptr;
690 if(pic->ref_index[i])
691 memset(pic->ref_index[i], 0, size * sizeof(uint8_t));
694 if(s->avctx->debug&FF_DEBUG_ER){
695 for(mb_y=0; mb_y<s->mb_height; mb_y++){
696 for(mb_x=0; mb_x<s->mb_width; mb_x++){
697 int status= s->error_status_table[mb_x + mb_y*s->mb_stride];
699 av_log(s->avctx, AV_LOG_DEBUG, "%2X ", status);
701 av_log(s->avctx, AV_LOG_DEBUG, "\n");
706 /* handle overlapping slices */
707 for(error_type=1; error_type<=3; error_type++){
710 for(i=s->mb_num-1; i>=0; i--){
711 const int mb_xy= s->mb_index2xy[i];
712 int error= s->error_status_table[mb_xy];
714 if(error&(1<<error_type))
716 if(error&(8<<error_type))
720 s->error_status_table[mb_xy]|= 1<<error_type;
728 /* handle slices with partitions of different length */
729 if(s->partitioned_frame){
732 for(i=s->mb_num-1; i>=0; i--){
733 const int mb_xy= s->mb_index2xy[i];
734 int error= s->error_status_table[mb_xy];
738 if((error&MV_END) || (error&DC_END) || (error&AC_ERROR))
742 s->error_status_table[mb_xy]|= AC_ERROR;
749 /* handle missing slices */
750 if(s->error_resilience>=4){
753 for(i=s->mb_num-2; i>=s->mb_width+100; i--){ //FIXME +100 hack
754 const int mb_xy= s->mb_index2xy[i];
755 int error1= s->error_status_table[mb_xy ];
756 int error2= s->error_status_table[s->mb_index2xy[i+1]];
761 if( error2==(VP_START|DC_ERROR|AC_ERROR|MV_ERROR|AC_END|DC_END|MV_END)
762 && error1!=(VP_START|DC_ERROR|AC_ERROR|MV_ERROR|AC_END|DC_END|MV_END)
763 && ((error1&AC_END) || (error1&DC_END) || (error1&MV_END))){ //end & uninited
768 s->error_status_table[mb_xy]|= DC_ERROR|AC_ERROR|MV_ERROR;
773 /* backward mark errors */
775 for(error_type=1; error_type<=3; error_type++){
776 for(i=s->mb_num-1; i>=0; i--){
777 const int mb_xy= s->mb_index2xy[i];
778 int error= s->error_status_table[mb_xy];
780 if(!s->mbskip_table[mb_xy]) //FIXME partition specific
782 if(error&(1<<error_type))
785 if(s->partitioned_frame){
786 if(distance < threshold_part[error_type-1])
787 s->error_status_table[mb_xy]|= 1<<error_type;
789 if(distance < threshold)
790 s->error_status_table[mb_xy]|= 1<<error_type;
799 /* forward mark errors */
801 for(i=0; i<s->mb_num; i++){
802 const int mb_xy= s->mb_index2xy[i];
803 int old_error= s->error_status_table[mb_xy];
805 if(old_error&VP_START)
806 error= old_error& (DC_ERROR|AC_ERROR|MV_ERROR);
808 error|= old_error& (DC_ERROR|AC_ERROR|MV_ERROR);
809 s->error_status_table[mb_xy]|= error;
813 /* handle not partitioned case */
814 if(!s->partitioned_frame){
815 for(i=0; i<s->mb_num; i++){
816 const int mb_xy= s->mb_index2xy[i];
817 error= s->error_status_table[mb_xy];
818 if(error&(AC_ERROR|DC_ERROR|MV_ERROR))
819 error|= AC_ERROR|DC_ERROR|MV_ERROR;
820 s->error_status_table[mb_xy]= error;
825 dc_error= ac_error= mv_error=0;
826 for(i=0; i<s->mb_num; i++){
827 const int mb_xy= s->mb_index2xy[i];
828 error= s->error_status_table[mb_xy];
829 if(error&DC_ERROR) dc_error ++;
830 if(error&AC_ERROR) ac_error ++;
831 if(error&MV_ERROR) mv_error ++;
833 av_log(s->avctx, AV_LOG_INFO, "concealing %d DC, %d AC, %d MV errors\n", dc_error, ac_error, mv_error);
835 is_intra_likely= is_intra_more_likely(s);
837 /* set unknown mb-type to most likely */
838 for(i=0; i<s->mb_num; i++){
839 const int mb_xy= s->mb_index2xy[i];
840 error= s->error_status_table[mb_xy];
841 if(!((error&DC_ERROR) && (error&MV_ERROR)))
845 s->current_picture.mb_type[mb_xy]= MB_TYPE_INTRA4x4;
847 s->current_picture.mb_type[mb_xy]= MB_TYPE_16x16 | MB_TYPE_L0;
850 /* handle inter blocks with damaged AC */
851 for(mb_y=0; mb_y<s->mb_height; mb_y++){
852 for(mb_x=0; mb_x<s->mb_width; mb_x++){
853 const int mb_xy= mb_x + mb_y * s->mb_stride;
854 const int mb_type= s->current_picture.mb_type[mb_xy];
855 error= s->error_status_table[mb_xy];
857 if(IS_INTRA(mb_type)) continue; //intra
858 if(error&MV_ERROR) continue; //inter with damaged MV
859 if(!(error&AC_ERROR)) continue; //undamaged inter
861 s->mv_dir = MV_DIR_FORWARD;
865 int mb_index= mb_x*2 + mb_y*2*s->b8_stride;
867 s->mv_type = MV_TYPE_8X8;
869 s->mv[0][j][0] = s->current_picture.motion_val[0][ mb_index + (j&1) + (j>>1)*s->b8_stride ][0];
870 s->mv[0][j][1] = s->current_picture.motion_val[0][ mb_index + (j&1) + (j>>1)*s->b8_stride ][1];
873 s->mv_type = MV_TYPE_16X16;
874 s->mv[0][0][0] = s->current_picture.motion_val[0][ mb_x*2 + mb_y*2*s->b8_stride ][0];
875 s->mv[0][0][1] = s->current_picture.motion_val[0][ mb_x*2 + mb_y*2*s->b8_stride ][1];
878 s->dsp.clear_blocks(s->block[0]);
887 if(s->pict_type==B_TYPE){
888 for(mb_y=0; mb_y<s->mb_height; mb_y++){
889 for(mb_x=0; mb_x<s->mb_width; mb_x++){
890 int xy= mb_x*2 + mb_y*2*s->b8_stride;
891 const int mb_xy= mb_x + mb_y * s->mb_stride;
892 const int mb_type= s->current_picture.mb_type[mb_xy];
893 error= s->error_status_table[mb_xy];
895 if(IS_INTRA(mb_type)) continue;
896 if(!(error&MV_ERROR)) continue; //inter with undamaged MV
897 if(!(error&AC_ERROR)) continue; //undamaged inter
899 s->mv_dir = MV_DIR_FORWARD|MV_DIR_BACKWARD;
901 s->mv_type = MV_TYPE_16X16;
905 int time_pp= s->pp_time;
906 int time_pb= s->pb_time;
908 s->mv[0][0][0] = s->next_picture.motion_val[0][xy][0]*time_pb/time_pp;
909 s->mv[0][0][1] = s->next_picture.motion_val[0][xy][1]*time_pb/time_pp;
910 s->mv[1][0][0] = s->next_picture.motion_val[0][xy][0]*(time_pb - time_pp)/time_pp;
911 s->mv[1][0][1] = s->next_picture.motion_val[0][xy][1]*(time_pb - time_pp)/time_pp;
919 s->dsp.clear_blocks(s->block[0]);
929 /* the filters below are not XvMC compatible, skip them */
930 if(s->avctx->xvmc_acceleration) goto ec_clean;
932 /* fill DC for inter blocks */
933 for(mb_y=0; mb_y<s->mb_height; mb_y++){
934 for(mb_x=0; mb_x<s->mb_width; mb_x++){
935 int dc, dcu, dcv, y, n;
937 uint8_t *dest_y, *dest_cb, *dest_cr;
938 const int mb_xy= mb_x + mb_y * s->mb_stride;
939 const int mb_type= s->current_picture.mb_type[mb_xy];
941 error= s->error_status_table[mb_xy];
943 if(IS_INTRA(mb_type) && s->partitioned_frame) continue;
944 // if(error&MV_ERROR) continue; //inter data damaged FIXME is this good?
946 dest_y = s->current_picture.data[0] + mb_x*16 + mb_y*16*s->linesize;
947 dest_cb= s->current_picture.data[1] + mb_x*8 + mb_y*8 *s->uvlinesize;
948 dest_cr= s->current_picture.data[2] + mb_x*8 + mb_y*8 *s->uvlinesize;
950 dc_ptr= &s->dc_val[0][mb_x*2 + mb_y*2*s->b8_stride];
956 dc+= dest_y[x + (n&1)*8 + (y + (n>>1)*8)*s->linesize];
959 dc_ptr[(n&1) + (n>>1)*s->b8_stride]= (dc+4)>>3;
966 dcu+=dest_cb[x + y*(s->uvlinesize)];
967 dcv+=dest_cr[x + y*(s->uvlinesize)];
970 s->dc_val[1][mb_x + mb_y*s->mb_stride]= (dcu+4)>>3;
971 s->dc_val[2][mb_x + mb_y*s->mb_stride]= (dcv+4)>>3;
975 /* guess DC for damaged blocks */
976 guess_dc(s, s->dc_val[0], s->mb_width*2, s->mb_height*2, s->b8_stride, 1);
977 guess_dc(s, s->dc_val[1], s->mb_width , s->mb_height , s->mb_stride, 0);
978 guess_dc(s, s->dc_val[2], s->mb_width , s->mb_height , s->mb_stride, 0);
981 filter181(s->dc_val[0], s->mb_width*2, s->mb_height*2, s->b8_stride);
984 /* render DC only intra */
985 for(mb_y=0; mb_y<s->mb_height; mb_y++){
986 for(mb_x=0; mb_x<s->mb_width; mb_x++){
987 uint8_t *dest_y, *dest_cb, *dest_cr;
988 const int mb_xy= mb_x + mb_y * s->mb_stride;
989 const int mb_type= s->current_picture.mb_type[mb_xy];
991 error= s->error_status_table[mb_xy];
993 if(IS_INTER(mb_type)) continue;
994 if(!(error&AC_ERROR)) continue; //undamaged
996 dest_y = s->current_picture.data[0] + mb_x*16 + mb_y*16*s->linesize;
997 dest_cb= s->current_picture.data[1] + mb_x*8 + mb_y*8 *s->uvlinesize;
998 dest_cr= s->current_picture.data[2] + mb_x*8 + mb_y*8 *s->uvlinesize;
1000 put_dc(s, dest_y, dest_cb, dest_cr, mb_x, mb_y);
1005 if(s->avctx->error_concealment&FF_EC_DEBLOCK){
1006 /* filter horizontal block boundaries */
1007 h_block_filter(s, s->current_picture.data[0], s->mb_width*2, s->mb_height*2, s->linesize , 1);
1008 h_block_filter(s, s->current_picture.data[1], s->mb_width , s->mb_height , s->uvlinesize, 0);
1009 h_block_filter(s, s->current_picture.data[2], s->mb_width , s->mb_height , s->uvlinesize, 0);
1011 /* filter vertical block boundaries */
1012 v_block_filter(s, s->current_picture.data[0], s->mb_width*2, s->mb_height*2, s->linesize , 1);
1013 v_block_filter(s, s->current_picture.data[1], s->mb_width , s->mb_height , s->uvlinesize, 0);
1014 v_block_filter(s, s->current_picture.data[2], s->mb_width , s->mb_height , s->uvlinesize, 0);
1020 /* clean a few tables */
1021 for(i=0; i<s->mb_num; i++){
1022 const int mb_xy= s->mb_index2xy[i];
1023 int error= s->error_status_table[mb_xy];
1025 if(s->pict_type!=B_TYPE && (error&(DC_ERROR|MV_ERROR|AC_ERROR))){
1026 s->mbskip_table[mb_xy]=0;
1028 s->mbintra_table[mb_xy]=1;