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
25 * Error resilience / concealment.
32 #include "mpegvideo.h"
34 #include "rectangle.h"
38 * H264 redefines mb_intra so it is not mistakely used (its uninitialized in h264)
39 * but error concealment must support both h264 and h263 thus we must undo this
43 static void decode_mb(MpegEncContext *s, int ref){
44 s->dest[0] = s->current_picture.f.data[0] + (s->mb_y * 16 * s->linesize) + s->mb_x * 16;
45 s->dest[1] = s->current_picture.f.data[1] + (s->mb_y * (16 >> s->chroma_y_shift) * s->uvlinesize) + s->mb_x * (16 >> s->chroma_x_shift);
46 s->dest[2] = s->current_picture.f.data[2] + (s->mb_y * (16 >> s->chroma_y_shift) * s->uvlinesize) + s->mb_x * (16 >> s->chroma_x_shift);
48 if(CONFIG_H264_DECODER && s->codec_id == CODEC_ID_H264){
49 H264Context *h= (void*)s;
50 h->mb_xy= s->mb_x + s->mb_y*s->mb_stride;
51 memset(h->non_zero_count_cache, 0, sizeof(h->non_zero_count_cache));
53 /* FIXME: It is posible albeit uncommon that slice references
54 * differ between slices. We take the easy approach and ignore
55 * it for now. If this turns out to have any relevance in
56 * practice then correct remapping should be added. */
57 if (ref >= h->ref_count[0])
59 fill_rectangle(&s->current_picture.f.ref_index[0][4*h->mb_xy], 2, 2, 2, ref, 1);
60 fill_rectangle(&h->ref_cache[0][scan8[0]], 4, 4, 8, ref, 1);
61 fill_rectangle(h->mv_cache[0][ scan8[0] ], 4, 4, 8, pack16to32(s->mv[0][0][0],s->mv[0][0][1]), 4);
63 ff_h264_hl_decode_mb(h);
66 MPV_decode_mb(s, s->block);
71 * @param stride the number of MVs to get to the next row
72 * @param mv_step the number of MVs per row or column in a macroblock
74 static void set_mv_strides(MpegEncContext *s, int *mv_step, int *stride){
75 if(s->codec_id == CODEC_ID_H264){
76 H264Context *h= (void*)s;
77 assert(s->quarter_sample);
82 *stride= s->b8_stride;
87 * Replace the current MB with a flat dc-only version.
89 static void put_dc(MpegEncContext *s, uint8_t *dest_y, uint8_t *dest_cb, uint8_t *dest_cr, int mb_x, int mb_y)
91 int dc, dcu, dcv, y, i;
93 dc= s->dc_val[0][mb_x*2 + (i&1) + (mb_y*2 + (i>>1))*s->b8_stride];
95 else if(dc>2040) dc=2040;
99 dest_y[x + (i&1)*8 + (y + (i>>1)*8)*s->linesize]= dc/8;
103 dcu = s->dc_val[1][mb_x + mb_y*s->mb_stride];
104 dcv = s->dc_val[2][mb_x + mb_y*s->mb_stride];
106 else if(dcu>2040) dcu=2040;
108 else if(dcv>2040) dcv=2040;
112 dest_cb[x + y * s->uvlinesize] = dcu / 8;
113 dest_cr[x + y * s->uvlinesize] = dcv / 8;
118 static void filter181(int16_t *data, int width, int height, int stride){
121 /* horizontal filter */
122 for(y=1; y<height-1; y++){
123 int prev_dc= data[0 + y*stride];
125 for(x=1; x<width-1; x++){
129 + data[x + y*stride]*8
130 - data[x + 1 + y*stride];
131 dc= (dc*10923 + 32768)>>16;
132 prev_dc= data[x + y*stride];
133 data[x + y*stride]= dc;
137 /* vertical filter */
138 for(x=1; x<width-1; x++){
139 int prev_dc= data[x];
141 for(y=1; y<height-1; y++){
145 + data[x + y *stride]*8
146 - data[x + (y+1)*stride];
147 dc= (dc*10923 + 32768)>>16;
148 prev_dc= data[x + y*stride];
149 data[x + y*stride]= dc;
155 * guess the dc of blocks which do not have an undamaged dc
156 * @param w width in 8 pixel blocks
157 * @param h height in 8 pixel blocks
159 static void guess_dc(MpegEncContext *s, int16_t *dc, int w, int h, int stride, int is_luma){
161 int16_t (*col )[4] = av_malloc(stride*h*sizeof( int16_t)*4);
162 uint16_t (*dist)[4] = av_malloc(stride*h*sizeof(uint16_t)*4);
164 for(b_y=0; b_y<h; b_y++){
167 for(b_x=0; b_x<w; b_x++){
168 int mb_index_j= (b_x>>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->current_picture.f.mb_type[mb_index_j]);
171 if(intra_j==0 || !(error_j&ER_DC_ERROR)){
172 color= dc[b_x + b_y*stride];
175 col [b_x + b_y*stride][1]= color;
176 dist[b_x + b_y*stride][1]= distance >= 0 ? b_x-distance : 9999;
180 for(b_x=w-1; b_x>=0; b_x--){
181 int mb_index_j= (b_x>>is_luma) + (b_y>>is_luma)*s->mb_stride;
182 int error_j= s->error_status_table[mb_index_j];
183 int intra_j = IS_INTRA(s->current_picture.f.mb_type[mb_index_j]);
184 if(intra_j==0 || !(error_j&ER_DC_ERROR)){
185 color= dc[b_x + b_y*stride];
188 col [b_x + b_y*stride][0]= color;
189 dist[b_x + b_y*stride][0]= distance >= 0 ? distance-b_x : 9999;
192 for(b_x=0; b_x<w; b_x++){
195 for(b_y=0; b_y<h; b_y++){
196 int mb_index_j= (b_x>>is_luma) + (b_y>>is_luma)*s->mb_stride;
197 int error_j= s->error_status_table[mb_index_j];
198 int intra_j = IS_INTRA(s->current_picture.f.mb_type[mb_index_j]);
199 if(intra_j==0 || !(error_j&ER_DC_ERROR)){
200 color= dc[b_x + b_y*stride];
203 col [b_x + b_y*stride][3]= color;
204 dist[b_x + b_y*stride][3]= distance >= 0 ? b_y-distance : 9999;
208 for(b_y=h-1; b_y>=0; b_y--){
209 int mb_index_j= (b_x>>is_luma) + (b_y>>is_luma)*s->mb_stride;
210 int error_j= s->error_status_table[mb_index_j];
211 int intra_j = IS_INTRA(s->current_picture.f.mb_type[mb_index_j]);
212 if(intra_j==0 || !(error_j&ER_DC_ERROR)){
213 color= dc[b_x + b_y*stride];
216 col [b_x + b_y*stride][2]= color;
217 dist[b_x + b_y*stride][2]= distance >= 0 ? distance-b_y : 9999;
221 for(b_y=0; b_y<h; b_y++){
222 for(b_x=0; b_x<w; b_x++){
223 int mb_index, error, j;
224 int64_t guess, weight_sum;
226 mb_index= (b_x>>is_luma) + (b_y>>is_luma)*s->mb_stride;
228 error= s->error_status_table[mb_index];
230 if(IS_INTER(s->current_picture.f.mb_type[mb_index])) continue; //inter
231 if(!(error&ER_DC_ERROR)) continue; //dc-ok
237 int64_t weight= 256*256*256*16/dist[b_x + b_y*stride][j];
238 guess+= weight*(int64_t)col[b_x + b_y*stride][j];
241 guess= (guess + weight_sum/2) / weight_sum;
243 dc[b_x + b_y*stride]= guess;
251 * simple horizontal deblocking filter used for error resilience
252 * @param w width in 8 pixel blocks
253 * @param h height in 8 pixel blocks
255 static void h_block_filter(MpegEncContext *s, uint8_t *dst, int w, int h, int stride, int is_luma){
256 int b_x, b_y, mvx_stride, mvy_stride;
257 uint8_t *cm = ff_cropTbl + MAX_NEG_CROP;
258 set_mv_strides(s, &mvx_stride, &mvy_stride);
259 mvx_stride >>= is_luma;
260 mvy_stride *= mvx_stride;
262 for(b_y=0; b_y<h; b_y++){
263 for(b_x=0; b_x<w-1; b_x++){
265 int left_status = s->error_status_table[( b_x >>is_luma) + (b_y>>is_luma)*s->mb_stride];
266 int right_status= s->error_status_table[((b_x+1)>>is_luma) + (b_y>>is_luma)*s->mb_stride];
267 int left_intra = IS_INTRA(s->current_picture.f.mb_type[( b_x >> is_luma) + (b_y >> is_luma) * s->mb_stride]);
268 int right_intra = IS_INTRA(s->current_picture.f.mb_type[((b_x + 1) >> is_luma) + (b_y >> is_luma) * s->mb_stride]);
269 int left_damage = left_status&ER_MB_ERROR;
270 int right_damage= right_status&ER_MB_ERROR;
271 int offset= b_x*8 + b_y*stride*8;
272 int16_t *left_mv= s->current_picture.f.motion_val[0][mvy_stride*b_y + mvx_stride* b_x ];
273 int16_t *right_mv= s->current_picture.f.motion_val[0][mvy_stride*b_y + mvx_stride*(b_x+1)];
275 if(!(left_damage||right_damage)) continue; // both undamaged
277 if( (!left_intra) && (!right_intra)
278 && FFABS(left_mv[0]-right_mv[0]) + FFABS(left_mv[1]+right_mv[1]) < 2) continue;
283 a= dst[offset + 7 + y*stride] - dst[offset + 6 + y*stride];
284 b= dst[offset + 8 + y*stride] - dst[offset + 7 + y*stride];
285 c= dst[offset + 9 + y*stride] - dst[offset + 8 + y*stride];
287 d= FFABS(b) - ((FFABS(a) + FFABS(c) + 1)>>1);
293 if(!(left_damage && right_damage))
297 dst[offset + 7 + y*stride] = cm[dst[offset + 7 + y*stride] + ((d*7)>>4)];
298 dst[offset + 6 + y*stride] = cm[dst[offset + 6 + y*stride] + ((d*5)>>4)];
299 dst[offset + 5 + y*stride] = cm[dst[offset + 5 + y*stride] + ((d*3)>>4)];
300 dst[offset + 4 + y*stride] = cm[dst[offset + 4 + y*stride] + ((d*1)>>4)];
303 dst[offset + 8 + y*stride] = cm[dst[offset + 8 + y*stride] - ((d*7)>>4)];
304 dst[offset + 9 + y*stride] = cm[dst[offset + 9 + y*stride] - ((d*5)>>4)];
305 dst[offset + 10+ y*stride] = cm[dst[offset +10 + y*stride] - ((d*3)>>4)];
306 dst[offset + 11+ y*stride] = cm[dst[offset +11 + y*stride] - ((d*1)>>4)];
314 * simple vertical deblocking filter used for error resilience
315 * @param w width in 8 pixel blocks
316 * @param h height in 8 pixel blocks
318 static void v_block_filter(MpegEncContext *s, uint8_t *dst, int w, int h, int stride, int is_luma){
319 int b_x, b_y, mvx_stride, mvy_stride;
320 uint8_t *cm = ff_cropTbl + MAX_NEG_CROP;
321 set_mv_strides(s, &mvx_stride, &mvy_stride);
322 mvx_stride >>= is_luma;
323 mvy_stride *= mvx_stride;
325 for(b_y=0; b_y<h-1; b_y++){
326 for(b_x=0; b_x<w; b_x++){
328 int top_status = s->error_status_table[(b_x>>is_luma) + ( b_y >>is_luma)*s->mb_stride];
329 int bottom_status= s->error_status_table[(b_x>>is_luma) + ((b_y+1)>>is_luma)*s->mb_stride];
330 int top_intra = IS_INTRA(s->current_picture.f.mb_type[(b_x >> is_luma) + ( b_y >> is_luma) * s->mb_stride]);
331 int bottom_intra = IS_INTRA(s->current_picture.f.mb_type[(b_x >> is_luma) + ((b_y + 1) >> is_luma) * s->mb_stride]);
332 int top_damage = top_status&ER_MB_ERROR;
333 int bottom_damage= bottom_status&ER_MB_ERROR;
334 int offset= b_x*8 + b_y*stride*8;
335 int16_t *top_mv = s->current_picture.f.motion_val[0][mvy_stride * b_y + mvx_stride * b_x];
336 int16_t *bottom_mv = s->current_picture.f.motion_val[0][mvy_stride * (b_y + 1) + mvx_stride * b_x];
338 if(!(top_damage||bottom_damage)) continue; // both undamaged
340 if( (!top_intra) && (!bottom_intra)
341 && FFABS(top_mv[0]-bottom_mv[0]) + FFABS(top_mv[1]+bottom_mv[1]) < 2) continue;
346 a= dst[offset + x + 7*stride] - dst[offset + x + 6*stride];
347 b= dst[offset + x + 8*stride] - dst[offset + x + 7*stride];
348 c= dst[offset + x + 9*stride] - dst[offset + x + 8*stride];
350 d= FFABS(b) - ((FFABS(a) + FFABS(c)+1)>>1);
356 if(!(top_damage && bottom_damage))
360 dst[offset + x + 7*stride] = cm[dst[offset + x + 7*stride] + ((d*7)>>4)];
361 dst[offset + x + 6*stride] = cm[dst[offset + x + 6*stride] + ((d*5)>>4)];
362 dst[offset + x + 5*stride] = cm[dst[offset + x + 5*stride] + ((d*3)>>4)];
363 dst[offset + x + 4*stride] = cm[dst[offset + x + 4*stride] + ((d*1)>>4)];
366 dst[offset + x + 8*stride] = cm[dst[offset + x + 8*stride] - ((d*7)>>4)];
367 dst[offset + x + 9*stride] = cm[dst[offset + x + 9*stride] - ((d*5)>>4)];
368 dst[offset + x + 10*stride] = cm[dst[offset + x + 10*stride] - ((d*3)>>4)];
369 dst[offset + x + 11*stride] = cm[dst[offset + x + 11*stride] - ((d*1)>>4)];
376 static void guess_mv(MpegEncContext *s){
377 uint8_t *fixed = av_malloc(s->mb_stride * s->mb_height);
380 #define MV_UNCHANGED 1
381 const int mb_stride = s->mb_stride;
382 const int mb_width = s->mb_width;
383 const int mb_height= s->mb_height;
384 int i, depth, num_avail;
385 int mb_x, mb_y, mot_step, mot_stride;
387 set_mv_strides(s, &mot_step, &mot_stride);
390 for(i=0; i<s->mb_num; i++){
391 const int mb_xy= s->mb_index2xy[ i ];
393 int error= s->error_status_table[mb_xy];
395 if(IS_INTRA(s->current_picture.f.mb_type[mb_xy])) f=MV_FROZEN; //intra //FIXME check
396 if(!(error&ER_MV_ERROR)) f=MV_FROZEN; //inter with undamaged MV
401 else if(s->last_picture.f.data[0] && s->last_picture.f.motion_val[0]){
402 const int mb_y= mb_xy / s->mb_stride;
403 const int mb_x= mb_xy % s->mb_stride;
404 const int mot_index= (mb_x + mb_y*mot_stride) * mot_step;
405 s->current_picture.f.motion_val[0][mot_index][0]= s->last_picture.f.motion_val[0][mot_index][0];
406 s->current_picture.f.motion_val[0][mot_index][1]= s->last_picture.f.motion_val[0][mot_index][1];
407 s->current_picture.f.ref_index[0][4*mb_xy] = s->last_picture.f.ref_index[0][4*mb_xy];
411 if((!(s->avctx->error_concealment&FF_EC_GUESS_MVS)) || num_avail <= mb_width/2){
412 for(mb_y=0; mb_y<s->mb_height; mb_y++){
413 for(mb_x=0; mb_x<s->mb_width; mb_x++){
414 const int mb_xy= mb_x + mb_y*s->mb_stride;
416 if(IS_INTRA(s->current_picture.f.mb_type[mb_xy])) continue;
417 if(!(s->error_status_table[mb_xy]&ER_MV_ERROR)) continue;
419 s->mv_dir = s->last_picture.f.data[0] ? MV_DIR_FORWARD : MV_DIR_BACKWARD;
421 s->mv_type = MV_TYPE_16X16;
424 s->dsp.clear_blocks(s->block[0]);
436 for(depth=0;; depth++){
437 int changed, pass, none_left;
441 for(pass=0; (changed || pass<2) && pass<10; pass++){
446 for(mb_y=0; mb_y<s->mb_height; mb_y++){
447 for(mb_x=0; mb_x<s->mb_width; mb_x++){
448 const int mb_xy= mb_x + mb_y*s->mb_stride;
449 int mv_predictor[8][2]={{0}};
453 int best_score=256*256*256*64;
455 const int mot_index= (mb_x + mb_y*mot_stride) * mot_step;
456 int prev_x, prev_y, prev_ref;
458 if((mb_x^mb_y^pass)&1) continue;
460 if(fixed[mb_xy]==MV_FROZEN) continue;
461 assert(!IS_INTRA(s->current_picture.f.mb_type[mb_xy]));
462 assert(s->last_picture_ptr && s->last_picture_ptr->f.data[0]);
465 if(mb_x>0 && fixed[mb_xy-1 ]==MV_FROZEN) j=1;
466 if(mb_x+1<mb_width && fixed[mb_xy+1 ]==MV_FROZEN) j=1;
467 if(mb_y>0 && fixed[mb_xy-mb_stride]==MV_FROZEN) j=1;
468 if(mb_y+1<mb_height && fixed[mb_xy+mb_stride]==MV_FROZEN) j=1;
472 if(mb_x>0 && fixed[mb_xy-1 ]==MV_CHANGED) j=1;
473 if(mb_x+1<mb_width && fixed[mb_xy+1 ]==MV_CHANGED) j=1;
474 if(mb_y>0 && fixed[mb_xy-mb_stride]==MV_CHANGED) j=1;
475 if(mb_y+1<mb_height && fixed[mb_xy+mb_stride]==MV_CHANGED) j=1;
476 if(j==0 && pass>1) continue;
480 if(mb_x>0 && fixed[mb_xy-1]){
481 mv_predictor[pred_count][0]= s->current_picture.f.motion_val[0][mot_index - mot_step][0];
482 mv_predictor[pred_count][1]= s->current_picture.f.motion_val[0][mot_index - mot_step][1];
483 ref [pred_count] = s->current_picture.f.ref_index[0][4*(mb_xy-1)];
486 if(mb_x+1<mb_width && fixed[mb_xy+1]){
487 mv_predictor[pred_count][0]= s->current_picture.f.motion_val[0][mot_index + mot_step][0];
488 mv_predictor[pred_count][1]= s->current_picture.f.motion_val[0][mot_index + mot_step][1];
489 ref [pred_count] = s->current_picture.f.ref_index[0][4*(mb_xy+1)];
492 if(mb_y>0 && fixed[mb_xy-mb_stride]){
493 mv_predictor[pred_count][0]= s->current_picture.f.motion_val[0][mot_index - mot_stride*mot_step][0];
494 mv_predictor[pred_count][1]= s->current_picture.f.motion_val[0][mot_index - mot_stride*mot_step][1];
495 ref [pred_count] = s->current_picture.f.ref_index[0][4*(mb_xy-s->mb_stride)];
498 if(mb_y+1<mb_height && fixed[mb_xy+mb_stride]){
499 mv_predictor[pred_count][0]= s->current_picture.f.motion_val[0][mot_index + mot_stride*mot_step][0];
500 mv_predictor[pred_count][1]= s->current_picture.f.motion_val[0][mot_index + mot_stride*mot_step][1];
501 ref [pred_count] = s->current_picture.f.ref_index[0][4*(mb_xy+s->mb_stride)];
504 if(pred_count==0) continue;
507 int sum_x=0, sum_y=0, sum_r=0;
508 int max_x, max_y, min_x, min_y, max_r, min_r;
510 for(j=0; j<pred_count; j++){
511 sum_x+= mv_predictor[j][0];
512 sum_y+= mv_predictor[j][1];
514 if(j && ref[j] != ref[j-1])
515 goto skip_mean_and_median;
519 mv_predictor[pred_count][0] = sum_x/j;
520 mv_predictor[pred_count][1] = sum_y/j;
521 ref [pred_count] = sum_r/j;
525 min_y= min_x= min_r= 99999;
526 max_y= max_x= max_r=-99999;
528 min_x=min_y=max_x=max_y=min_r=max_r=0;
530 for(j=0; j<pred_count; j++){
531 max_x= FFMAX(max_x, mv_predictor[j][0]);
532 max_y= FFMAX(max_y, mv_predictor[j][1]);
533 max_r= FFMAX(max_r, ref[j]);
534 min_x= FFMIN(min_x, mv_predictor[j][0]);
535 min_y= FFMIN(min_y, mv_predictor[j][1]);
536 min_r= FFMIN(min_r, ref[j]);
538 mv_predictor[pred_count+1][0] = sum_x - max_x - min_x;
539 mv_predictor[pred_count+1][1] = sum_y - max_y - min_y;
540 ref [pred_count+1] = sum_r - max_r - min_r;
543 mv_predictor[pred_count+1][0] /= 2;
544 mv_predictor[pred_count+1][1] /= 2;
545 ref [pred_count+1] /= 2;
549 skip_mean_and_median:
554 if (!fixed[mb_xy] && 0) {
555 if (s->avctx->codec_id == CODEC_ID_H264) {
558 ff_thread_await_progress((AVFrame *) s->last_picture_ptr,
561 if (!s->last_picture.f.motion_val[0] ||
562 !s->last_picture.f.ref_index[0])
564 prev_x = s->last_picture.f.motion_val[0][mot_index][0];
565 prev_y = s->last_picture.f.motion_val[0][mot_index][1];
566 prev_ref = s->last_picture.f.ref_index[0][4*mb_xy];
568 prev_x = s->current_picture.f.motion_val[0][mot_index][0];
569 prev_y = s->current_picture.f.motion_val[0][mot_index][1];
570 prev_ref = s->current_picture.f.ref_index[0][4*mb_xy];
574 mv_predictor[pred_count][0]= prev_x;
575 mv_predictor[pred_count][1]= prev_y;
576 ref [pred_count] = prev_ref;
580 s->mv_dir = MV_DIR_FORWARD;
582 s->mv_type = MV_TYPE_16X16;
585 s->dsp.clear_blocks(s->block[0]);
590 for(j=0; j<pred_count; j++){
592 uint8_t *src = s->current_picture.f.data[0] + mb_x*16 + mb_y*16*s->linesize;
594 s->current_picture.f.motion_val[0][mot_index][0] = s->mv[0][0][0] = mv_predictor[j][0];
595 s->current_picture.f.motion_val[0][mot_index][1] = s->mv[0][0][1] = mv_predictor[j][1];
597 if(ref[j]<0) //predictor intra or otherwise not available
600 decode_mb(s, ref[j]);
602 if(mb_x>0 && fixed[mb_xy-1]){
605 score += FFABS(src[k*s->linesize-1 ]-src[k*s->linesize ]);
607 if(mb_x+1<mb_width && fixed[mb_xy+1]){
610 score += FFABS(src[k*s->linesize+15]-src[k*s->linesize+16]);
612 if(mb_y>0 && fixed[mb_xy-mb_stride]){
615 score += FFABS(src[k-s->linesize ]-src[k ]);
617 if(mb_y+1<mb_height && fixed[mb_xy+mb_stride]){
620 score += FFABS(src[k+s->linesize*15]-src[k+s->linesize*16]);
623 if(score <= best_score){ // <= will favor the last MV
628 score_sum+= best_score;
629 s->mv[0][0][0]= mv_predictor[best_pred][0];
630 s->mv[0][0][1]= mv_predictor[best_pred][1];
632 for(i=0; i<mot_step; i++)
633 for(j=0; j<mot_step; j++){
634 s->current_picture.f.motion_val[0][mot_index + i + j * mot_stride][0] = s->mv[0][0][0];
635 s->current_picture.f.motion_val[0][mot_index + i + j * mot_stride][1] = s->mv[0][0][1];
638 decode_mb(s, ref[best_pred]);
641 if(s->mv[0][0][0] != prev_x || s->mv[0][0][1] != prev_y){
642 fixed[mb_xy]=MV_CHANGED;
645 fixed[mb_xy]=MV_UNCHANGED;
649 // printf(".%d/%d", changed, score_sum); fflush(stdout);
655 for(i=0; i<s->mb_num; i++){
656 int mb_xy= s->mb_index2xy[i];
658 fixed[mb_xy]=MV_FROZEN;
660 // printf(":"); fflush(stdout);
666 static int is_intra_more_likely(MpegEncContext *s){
667 int is_intra_likely, i, j, undamaged_count, skip_amount, mb_x, mb_y;
669 if (!s->last_picture_ptr || !s->last_picture_ptr->f.data[0]) return 1; //no previous frame available -> use spatial prediction
672 for(i=0; i<s->mb_num; i++){
673 const int mb_xy= s->mb_index2xy[i];
674 const int error= s->error_status_table[mb_xy];
675 if(!((error&ER_DC_ERROR) && (error&ER_MV_ERROR)))
679 if(s->codec_id == CODEC_ID_H264){
680 H264Context *h= (void*)s;
681 if (h->list_count <= 0 || h->ref_count[0] <= 0 || !h->ref_list[0][0].f.data[0])
685 if(undamaged_count < 5) return 0; //almost all MBs damaged -> use temporal prediction
687 //prevent dsp.sad() check, that requires access to the image
688 if(CONFIG_MPEG_XVMC_DECODER && s->avctx->xvmc_acceleration && s->pict_type == AV_PICTURE_TYPE_I)
691 skip_amount = FFMAX(undamaged_count / 50, 1); // check only up to 50 MBs
695 for(mb_y= 0; mb_y<s->mb_height-1; mb_y++){
696 for(mb_x= 0; mb_x<s->mb_width; mb_x++){
698 const int mb_xy= mb_x + mb_y*s->mb_stride;
700 error= s->error_status_table[mb_xy];
701 if((error&ER_DC_ERROR) && (error&ER_MV_ERROR))
702 continue; //skip damaged
705 if((j%skip_amount) != 0) continue; //skip a few to speed things up
707 if(s->pict_type==AV_PICTURE_TYPE_I){
708 uint8_t *mb_ptr = s->current_picture.f.data[0] + mb_x*16 + mb_y*16*s->linesize;
709 uint8_t *last_mb_ptr= s->last_picture.f.data [0] + mb_x*16 + mb_y*16*s->linesize;
711 if (s->avctx->codec_id == CODEC_ID_H264) {
714 ff_thread_await_progress((AVFrame *) s->last_picture_ptr,
717 is_intra_likely += s->dsp.sad[0](NULL, last_mb_ptr, mb_ptr , s->linesize, 16);
718 // FIXME need await_progress() here
719 is_intra_likely -= s->dsp.sad[0](NULL, last_mb_ptr, last_mb_ptr+s->linesize*16, s->linesize, 16);
721 if (IS_INTRA(s->current_picture.f.mb_type[mb_xy]))
728 //printf("is_intra_likely: %d type:%d\n", is_intra_likely, s->pict_type);
729 return is_intra_likely > 0;
732 void ff_er_frame_start(MpegEncContext *s){
733 if(!s->err_recognition) return;
735 memset(s->error_status_table, ER_MB_ERROR|VP_START|ER_MB_END, s->mb_stride*s->mb_height*sizeof(uint8_t));
736 s->error_count= 3*s->mb_num;
737 s->error_occurred = 0;
742 * @param endx x component of the last macroblock, can be -1 for the last of the previous line
743 * @param status the status at the end (ER_MV_END, ER_AC_ERROR, ...), it is assumed that no earlier end or
744 * error of the same type occurred
746 void ff_er_add_slice(MpegEncContext *s, int startx, int starty, int endx, int endy, int status){
747 const int start_i= av_clip(startx + starty * s->mb_width , 0, s->mb_num-1);
748 const int end_i = av_clip(endx + endy * s->mb_width , 0, s->mb_num);
749 const int start_xy= s->mb_index2xy[start_i];
750 const int end_xy = s->mb_index2xy[end_i];
753 if(s->avctx->hwaccel)
756 if(start_i > end_i || start_xy > end_xy){
757 av_log(s->avctx, AV_LOG_ERROR, "internal error, slice end before start\n");
761 if(!s->err_recognition) return;
764 if(status & (ER_AC_ERROR|ER_AC_END)){
765 mask &= ~(ER_AC_ERROR|ER_AC_END);
766 s->error_count -= end_i - start_i + 1;
768 if(status & (ER_DC_ERROR|ER_DC_END)){
769 mask &= ~(ER_DC_ERROR|ER_DC_END);
770 s->error_count -= end_i - start_i + 1;
772 if(status & (ER_MV_ERROR|ER_MV_END)){
773 mask &= ~(ER_MV_ERROR|ER_MV_END);
774 s->error_count -= end_i - start_i + 1;
777 if(status & ER_MB_ERROR) {
778 s->error_occurred = 1;
779 s->error_count= INT_MAX;
783 memset(&s->error_status_table[start_xy], 0, (end_xy - start_xy) * sizeof(uint8_t));
786 for(i=start_xy; i<end_xy; i++){
787 s->error_status_table[ i ] &= mask;
791 if(end_i == s->mb_num)
792 s->error_count= INT_MAX;
794 s->error_status_table[end_xy] &= mask;
795 s->error_status_table[end_xy] |= status;
798 s->error_status_table[start_xy] |= VP_START;
800 if(start_xy > 0 && s->avctx->thread_count <= 1 && s->avctx->skip_top*s->mb_width < start_i){
801 int prev_status= s->error_status_table[ s->mb_index2xy[start_i - 1] ];
803 prev_status &= ~ VP_START;
804 if(prev_status != (ER_MV_END|ER_DC_END|ER_AC_END)) s->error_count= INT_MAX;
808 void ff_er_frame_end(MpegEncContext *s){
809 int i, mb_x, mb_y, error, error_type, dc_error, mv_error, ac_error;
811 int threshold_part[4]= {100,100,100};
814 int size = s->b8_stride * 2 * s->mb_height;
815 Picture *pic= s->current_picture_ptr;
817 if(!s->err_recognition || s->error_count==0 || s->avctx->lowres ||
819 s->avctx->codec->capabilities&CODEC_CAP_HWACCEL_VDPAU ||
820 s->picture_structure != PICT_FRAME || // we do not support ER of field pictures yet, though it should not crash if enabled
821 s->error_count==3*s->mb_width*(s->avctx->skip_top + s->avctx->skip_bottom)) return;
823 if (s->current_picture.f.motion_val[0] == NULL) {
824 av_log(s->avctx, AV_LOG_ERROR, "Warning MVs not available\n");
827 pic->f.ref_index[i] = av_mallocz(s->mb_stride * s->mb_height * 4 * sizeof(uint8_t));
828 pic->motion_val_base[i]= av_mallocz((size+4) * 2 * sizeof(uint16_t));
829 pic->f.motion_val[i] = pic->motion_val_base[i] + 4;
831 pic->f.motion_subsample_log2 = 3;
832 s->current_picture= *s->current_picture_ptr;
835 if(s->avctx->debug&FF_DEBUG_ER){
836 for(mb_y=0; mb_y<s->mb_height; mb_y++){
837 for(mb_x=0; mb_x<s->mb_width; mb_x++){
838 int status= s->error_status_table[mb_x + mb_y*s->mb_stride];
840 av_log(s->avctx, AV_LOG_DEBUG, "%2X ", status);
842 av_log(s->avctx, AV_LOG_DEBUG, "\n");
847 /* handle overlapping slices */
848 for(error_type=1; error_type<=3; error_type++){
851 for(i=s->mb_num-1; i>=0; i--){
852 const int mb_xy= s->mb_index2xy[i];
853 int error= s->error_status_table[mb_xy];
855 if(error&(1<<error_type))
857 if(error&(8<<error_type))
861 s->error_status_table[mb_xy]|= 1<<error_type;
869 /* handle slices with partitions of different length */
870 if(s->partitioned_frame){
873 for(i=s->mb_num-1; i>=0; i--){
874 const int mb_xy= s->mb_index2xy[i];
875 int error= s->error_status_table[mb_xy];
879 if((error&ER_MV_END) || (error&ER_DC_END) || (error&ER_AC_ERROR))
883 s->error_status_table[mb_xy]|= ER_AC_ERROR;
890 /* handle missing slices */
891 if(s->err_recognition&AV_EF_EXPLODE){
894 for(i=s->mb_num-2; i>=s->mb_width+100; i--){ //FIXME +100 hack
895 const int mb_xy= s->mb_index2xy[i];
896 int error1= s->error_status_table[mb_xy ];
897 int error2= s->error_status_table[s->mb_index2xy[i+1]];
902 if( error2==(VP_START|ER_MB_ERROR|ER_MB_END)
903 && error1!=(VP_START|ER_MB_ERROR|ER_MB_END)
904 && ((error1&ER_AC_END) || (error1&ER_DC_END) || (error1&ER_MV_END))){ //end & uninit
909 s->error_status_table[mb_xy]|= ER_MB_ERROR;
914 /* backward mark errors */
916 for(error_type=1; error_type<=3; error_type++){
917 for(i=s->mb_num-1; i>=0; i--){
918 const int mb_xy= s->mb_index2xy[i];
919 int error= s->error_status_table[mb_xy];
921 if(!s->mbskip_table[mb_xy]) //FIXME partition specific
923 if(error&(1<<error_type))
926 if(s->partitioned_frame){
927 if(distance < threshold_part[error_type-1])
928 s->error_status_table[mb_xy]|= 1<<error_type;
930 if(distance < threshold)
931 s->error_status_table[mb_xy]|= 1<<error_type;
940 /* forward mark errors */
942 for(i=0; i<s->mb_num; i++){
943 const int mb_xy= s->mb_index2xy[i];
944 int old_error= s->error_status_table[mb_xy];
946 if(old_error&VP_START)
947 error= old_error& ER_MB_ERROR;
949 error|= old_error& ER_MB_ERROR;
950 s->error_status_table[mb_xy]|= error;
954 /* handle not partitioned case */
955 if(!s->partitioned_frame){
956 for(i=0; i<s->mb_num; i++){
957 const int mb_xy= s->mb_index2xy[i];
958 error= s->error_status_table[mb_xy];
959 if(error&ER_MB_ERROR)
961 s->error_status_table[mb_xy]= error;
966 dc_error= ac_error= mv_error=0;
967 for(i=0; i<s->mb_num; i++){
968 const int mb_xy= s->mb_index2xy[i];
969 error= s->error_status_table[mb_xy];
970 if(error&ER_DC_ERROR) dc_error ++;
971 if(error&ER_AC_ERROR) ac_error ++;
972 if(error&ER_MV_ERROR) mv_error ++;
974 av_log(s->avctx, AV_LOG_INFO, "concealing %d DC, %d AC, %d MV errors\n", dc_error, ac_error, mv_error);
976 is_intra_likely= is_intra_more_likely(s);
978 /* set unknown mb-type to most likely */
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_DC_ERROR) && (error&ER_MV_ERROR)))
986 s->current_picture.f.mb_type[mb_xy] = MB_TYPE_INTRA4x4;
988 s->current_picture.f.mb_type[mb_xy] = MB_TYPE_16x16 | MB_TYPE_L0;
991 // change inter to intra blocks if no reference frames are available
992 if (!s->last_picture.f.data[0] && !s->next_picture.f.data[0])
993 for(i=0; i<s->mb_num; i++){
994 const int mb_xy= s->mb_index2xy[i];
995 if (!IS_INTRA(s->current_picture.f.mb_type[mb_xy]))
996 s->current_picture.f.mb_type[mb_xy] = MB_TYPE_INTRA4x4;
999 /* handle inter blocks with damaged AC */
1000 for(mb_y=0; mb_y<s->mb_height; mb_y++){
1001 for(mb_x=0; mb_x<s->mb_width; mb_x++){
1002 const int mb_xy= mb_x + mb_y * s->mb_stride;
1003 const int mb_type= s->current_picture.f.mb_type[mb_xy];
1004 int dir = !s->last_picture.f.data[0];
1005 error= s->error_status_table[mb_xy];
1007 if(IS_INTRA(mb_type)) continue; //intra
1008 if(error&ER_MV_ERROR) continue; //inter with damaged MV
1009 if(!(error&ER_AC_ERROR)) continue; //undamaged inter
1011 s->mv_dir = dir ? MV_DIR_BACKWARD : MV_DIR_FORWARD;
1014 if(IS_8X8(mb_type)){
1015 int mb_index= mb_x*2 + mb_y*2*s->b8_stride;
1017 s->mv_type = MV_TYPE_8X8;
1019 s->mv[0][j][0] = s->current_picture.f.motion_val[dir][mb_index + (j & 1) + (j >> 1) * s->b8_stride][0];
1020 s->mv[0][j][1] = s->current_picture.f.motion_val[dir][mb_index + (j & 1) + (j >> 1) * s->b8_stride][1];
1023 s->mv_type = MV_TYPE_16X16;
1024 s->mv[0][0][0] = s->current_picture.f.motion_val[dir][ mb_x*2 + mb_y*2*s->b8_stride ][0];
1025 s->mv[0][0][1] = s->current_picture.f.motion_val[dir][ mb_x*2 + mb_y*2*s->b8_stride ][1];
1028 s->dsp.clear_blocks(s->block[0]);
1032 decode_mb(s, 0/*FIXME h264 partitioned slices need this set*/);
1037 if(s->pict_type==AV_PICTURE_TYPE_B){
1038 for(mb_y=0; mb_y<s->mb_height; mb_y++){
1039 for(mb_x=0; mb_x<s->mb_width; mb_x++){
1040 int xy= mb_x*2 + mb_y*2*s->b8_stride;
1041 const int mb_xy= mb_x + mb_y * s->mb_stride;
1042 const int mb_type= s->current_picture.f.mb_type[mb_xy];
1043 error= s->error_status_table[mb_xy];
1045 if(IS_INTRA(mb_type)) continue;
1046 if(!(error&ER_MV_ERROR)) continue; //inter with undamaged MV
1047 if(!(error&ER_AC_ERROR)) continue; //undamaged inter
1049 s->mv_dir = MV_DIR_FORWARD|MV_DIR_BACKWARD;
1050 if(!s->last_picture.f.data[0]) s->mv_dir &= ~MV_DIR_FORWARD;
1051 if(!s->next_picture.f.data[0]) s->mv_dir &= ~MV_DIR_BACKWARD;
1053 s->mv_type = MV_TYPE_16X16;
1057 int time_pp= s->pp_time;
1058 int time_pb= s->pb_time;
1060 if (s->avctx->codec_id == CODEC_ID_H264) {
1063 ff_thread_await_progress((AVFrame *) s->next_picture_ptr,
1066 s->mv[0][0][0] = s->next_picture.f.motion_val[0][xy][0] * time_pb / time_pp;
1067 s->mv[0][0][1] = s->next_picture.f.motion_val[0][xy][1] * time_pb / time_pp;
1068 s->mv[1][0][0] = s->next_picture.f.motion_val[0][xy][0] * (time_pb - time_pp) / time_pp;
1069 s->mv[1][0][1] = s->next_picture.f.motion_val[0][xy][1] * (time_pb - time_pp) / time_pp;
1077 s->dsp.clear_blocks(s->block[0]);
1086 /* the filters below are not XvMC compatible, skip them */
1087 if(CONFIG_MPEG_XVMC_DECODER && s->avctx->xvmc_acceleration)
1089 /* fill DC for inter blocks */
1090 for(mb_y=0; mb_y<s->mb_height; mb_y++){
1091 for(mb_x=0; mb_x<s->mb_width; mb_x++){
1092 int dc, dcu, dcv, y, n;
1094 uint8_t *dest_y, *dest_cb, *dest_cr;
1095 const int mb_xy= mb_x + mb_y * s->mb_stride;
1096 const int mb_type = s->current_picture.f.mb_type[mb_xy];
1098 error= s->error_status_table[mb_xy];
1100 if(IS_INTRA(mb_type) && s->partitioned_frame) continue;
1101 // if(error&ER_MV_ERROR) continue; //inter data damaged FIXME is this good?
1103 dest_y = s->current_picture.f.data[0] + mb_x * 16 + mb_y * 16 * s->linesize;
1104 dest_cb = s->current_picture.f.data[1] + mb_x * 8 + mb_y * 8 * s->uvlinesize;
1105 dest_cr = s->current_picture.f.data[2] + mb_x * 8 + mb_y * 8 * s->uvlinesize;
1107 dc_ptr= &s->dc_val[0][mb_x*2 + mb_y*2*s->b8_stride];
1113 dc+= dest_y[x + (n&1)*8 + (y + (n>>1)*8)*s->linesize];
1116 dc_ptr[(n&1) + (n>>1)*s->b8_stride]= (dc+4)>>3;
1123 dcu += dest_cb[x + y * s->uvlinesize];
1124 dcv += dest_cr[x + y * s->uvlinesize];
1127 s->dc_val[1][mb_x + mb_y*s->mb_stride]= (dcu+4)>>3;
1128 s->dc_val[2][mb_x + mb_y*s->mb_stride]= (dcv+4)>>3;
1132 /* guess DC for damaged blocks */
1133 guess_dc(s, s->dc_val[0], s->mb_width*2, s->mb_height*2, s->b8_stride, 1);
1134 guess_dc(s, s->dc_val[1], s->mb_width , s->mb_height , s->mb_stride, 0);
1135 guess_dc(s, s->dc_val[2], s->mb_width , s->mb_height , s->mb_stride, 0);
1137 /* filter luma DC */
1138 filter181(s->dc_val[0], s->mb_width*2, s->mb_height*2, s->b8_stride);
1141 /* render DC only intra */
1142 for(mb_y=0; mb_y<s->mb_height; mb_y++){
1143 for(mb_x=0; mb_x<s->mb_width; mb_x++){
1144 uint8_t *dest_y, *dest_cb, *dest_cr;
1145 const int mb_xy= mb_x + mb_y * s->mb_stride;
1146 const int mb_type = s->current_picture.f.mb_type[mb_xy];
1148 error= s->error_status_table[mb_xy];
1150 if(IS_INTER(mb_type)) continue;
1151 if(!(error&ER_AC_ERROR)) continue; //undamaged
1153 dest_y = s->current_picture.f.data[0] + mb_x * 16 + mb_y * 16 * s->linesize;
1154 dest_cb = s->current_picture.f.data[1] + mb_x * 8 + mb_y * 8 * s->uvlinesize;
1155 dest_cr = s->current_picture.f.data[2] + mb_x * 8 + mb_y * 8 * s->uvlinesize;
1157 put_dc(s, dest_y, dest_cb, dest_cr, mb_x, mb_y);
1162 if(s->avctx->error_concealment&FF_EC_DEBLOCK){
1163 /* filter horizontal block boundaries */
1164 h_block_filter(s, s->current_picture.f.data[0], s->mb_width*2, s->mb_height*2, s->linesize , 1);
1165 h_block_filter(s, s->current_picture.f.data[1], s->mb_width , s->mb_height , s->uvlinesize, 0);
1166 h_block_filter(s, s->current_picture.f.data[2], s->mb_width , s->mb_height , s->uvlinesize, 0);
1168 /* filter vertical block boundaries */
1169 v_block_filter(s, s->current_picture.f.data[0], s->mb_width*2, s->mb_height*2, s->linesize , 1);
1170 v_block_filter(s, s->current_picture.f.data[1], s->mb_width , s->mb_height , s->uvlinesize, 0);
1171 v_block_filter(s, s->current_picture.f.data[2], s->mb_width , s->mb_height , s->uvlinesize, 0);
1175 /* clean a few tables */
1176 for(i=0; i<s->mb_num; i++){
1177 const int mb_xy= s->mb_index2xy[i];
1178 int error= s->error_status_table[mb_xy];
1180 if(s->pict_type!=AV_PICTURE_TYPE_B && (error&(ER_DC_ERROR|ER_MV_ERROR|ER_AC_ERROR))){
1181 s->mbskip_table[mb_xy]=0;
1183 s->mbintra_table[mb_xy]=1;