LCOV - code coverage report
Current view: top level - libavcodec - error_resilience.c (source / functions) Hit Total Coverage
Test: coverage.info Lines: 726 831 87.4 %
Date: 2018-02-24 03:21:38 Functions: 13 13 100.0 %

          Line data    Source code
       1             : /*
       2             :  * Error resilience / concealment
       3             :  *
       4             :  * Copyright (c) 2002-2004 Michael Niedermayer <michaelni@gmx.at>
       5             :  *
       6             :  * This file is part of FFmpeg.
       7             :  *
       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.
      12             :  *
      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.
      17             :  *
      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
      21             :  */
      22             : 
      23             : /**
      24             :  * @file
      25             :  * Error resilience / concealment.
      26             :  */
      27             : 
      28             : #include <limits.h>
      29             : 
      30             : #include "libavutil/internal.h"
      31             : #include "avcodec.h"
      32             : #include "error_resilience.h"
      33             : #include "me_cmp.h"
      34             : #include "mpegutils.h"
      35             : #include "mpegvideo.h"
      36             : #include "rectangle.h"
      37             : #include "thread.h"
      38             : #include "version.h"
      39             : 
      40             : /**
      41             :  * @param stride the number of MVs to get to the next row
      42             :  * @param mv_step the number of MVs per row or column in a macroblock
      43             :  */
      44         252 : static void set_mv_strides(ERContext *s, ptrdiff_t *mv_step, ptrdiff_t *stride)
      45             : {
      46         252 :     if (s->avctx->codec_id == AV_CODEC_ID_H264) {
      47          49 :         av_assert0(s->quarter_sample);
      48          49 :         *mv_step = 4;
      49          49 :         *stride  = s->mb_width * 4;
      50             :     } else {
      51         203 :         *mv_step = 2;
      52         203 :         *stride  = s->b8_stride;
      53             :     }
      54         252 : }
      55             : 
      56             : /**
      57             :  * Replace the current MB with a flat dc-only version.
      58             :  */
      59         354 : static void put_dc(ERContext *s, uint8_t *dest_y, uint8_t *dest_cb,
      60             :                    uint8_t *dest_cr, int mb_x, int mb_y)
      61             : {
      62         354 :     int *linesize = s->cur_pic.f->linesize;
      63             :     int dc, dcu, dcv, y, i;
      64        1770 :     for (i = 0; i < 4; i++) {
      65        1416 :         dc = s->dc_val[0][mb_x * 2 + (i &  1) + (mb_y * 2 + (i >> 1)) * s->b8_stride];
      66        1416 :         if (dc < 0)
      67           0 :             dc = 0;
      68        1416 :         else if (dc > 2040)
      69           0 :             dc = 2040;
      70       12744 :         for (y = 0; y < 8; y++) {
      71             :             int x;
      72      101952 :             for (x = 0; x < 8; x++)
      73       90624 :                 dest_y[x + (i &  1) * 8 + (y + (i >> 1) * 8) * linesize[0]] = dc / 8;
      74             :         }
      75             :     }
      76         354 :     dcu = s->dc_val[1][mb_x + mb_y * s->mb_stride];
      77         354 :     dcv = s->dc_val[2][mb_x + mb_y * s->mb_stride];
      78         354 :     if (dcu < 0)
      79           0 :         dcu = 0;
      80         354 :     else if (dcu > 2040)
      81           0 :         dcu = 2040;
      82         354 :     if (dcv < 0)
      83           0 :         dcv = 0;
      84         354 :     else if (dcv > 2040)
      85           0 :         dcv = 2040;
      86             : 
      87         354 :     if (dest_cr)
      88        3186 :     for (y = 0; y < 8; y++) {
      89             :         int x;
      90       25488 :         for (x = 0; x < 8; x++) {
      91       22656 :             dest_cb[x + y * linesize[1]] = dcu / 8;
      92       22656 :             dest_cr[x + y * linesize[2]] = dcv / 8;
      93             :         }
      94             :     }
      95         354 : }
      96             : 
      97          36 : static void filter181(int16_t *data, int width, int height, ptrdiff_t stride)
      98             : {
      99             :     int x, y;
     100             : 
     101             :     /* horizontal filter */
     102        1134 :     for (y = 1; y < height - 1; y++) {
     103        1098 :         int prev_dc = data[0 + y * stride];
     104             : 
     105       44750 :         for (x = 1; x < width - 1; x++) {
     106             :             int dc;
     107       87304 :             dc = -prev_dc +
     108       43652 :                  data[x     + y * stride] * 8 -
     109       43652 :                  data[x + 1 + y * stride];
     110       43652 :             dc = (dc * 10923 + 32768) >> 16;
     111       43652 :             prev_dc = data[x + y * stride];
     112       43652 :             data[x + y * stride] = dc;
     113             :         }
     114             :     }
     115             : 
     116             :     /* vertical filter */
     117        1394 :     for (x = 1; x < width - 1; x++) {
     118        1358 :         int prev_dc = data[x];
     119             : 
     120       45010 :         for (y = 1; y < height - 1; y++) {
     121             :             int dc;
     122             : 
     123       87304 :             dc = -prev_dc +
     124       43652 :                  data[x +  y      * stride] * 8 -
     125       43652 :                  data[x + (y + 1) * stride];
     126       43652 :             dc = (dc * 10923 + 32768) >> 16;
     127       43652 :             prev_dc = data[x + y * stride];
     128       43652 :             data[x + y * stride] = dc;
     129             :         }
     130             :     }
     131          36 : }
     132             : 
     133             : /**
     134             :  * guess the dc of blocks which do not have an undamaged dc
     135             :  * @param w     width in 8 pixel blocks
     136             :  * @param h     height in 8 pixel blocks
     137             :  */
     138         108 : static void guess_dc(ERContext *s, int16_t *dc, int w,
     139             :                      int h, ptrdiff_t stride, int is_luma)
     140             : {
     141             :     int b_x, b_y;
     142         108 :     int16_t  (*col )[4] = av_malloc_array(stride, h*sizeof( int16_t)*4);
     143         108 :     uint32_t (*dist)[4] = av_malloc_array(stride, h*sizeof(uint32_t)*4);
     144             : 
     145         108 :     if(!col || !dist) {
     146           0 :         av_log(s->avctx, AV_LOG_ERROR, "guess_dc() is out of memory\n");
     147           0 :         goto fail;
     148             :     }
     149             : 
     150        2448 :     for(b_y=0; b_y<h; b_y++){
     151        2340 :         int color= 1024;
     152        2340 :         int distance= -1;
     153       75402 :         for(b_x=0; b_x<w; b_x++){
     154       73062 :             int mb_index_j= (b_x>>is_luma) + (b_y>>is_luma)*s->mb_stride;
     155       73062 :             int error_j= s->error_status_table[mb_index_j];
     156       73062 :             int intra_j = IS_INTRA(s->cur_pic.mb_type[mb_index_j]);
     157       73062 :             if(intra_j==0 || !(error_j&ER_DC_ERROR)){
     158       70938 :                 color= dc[b_x + b_y*stride];
     159       70938 :                 distance= b_x;
     160             :             }
     161       73062 :             col [b_x + b_y*stride][1]= color;
     162       73062 :             dist[b_x + b_y*stride][1]= distance >= 0 ? b_x-distance : 9999;
     163             :         }
     164        2340 :         color= 1024;
     165        2340 :         distance= -1;
     166       75402 :         for(b_x=w-1; b_x>=0; b_x--){
     167       73062 :             int mb_index_j= (b_x>>is_luma) + (b_y>>is_luma)*s->mb_stride;
     168       73062 :             int error_j= s->error_status_table[mb_index_j];
     169       73062 :             int intra_j = IS_INTRA(s->cur_pic.mb_type[mb_index_j]);
     170       73062 :             if(intra_j==0 || !(error_j&ER_DC_ERROR)){
     171       70938 :                 color= dc[b_x + b_y*stride];
     172       70938 :                 distance= b_x;
     173             :             }
     174       73062 :             col [b_x + b_y*stride][0]= color;
     175       73062 :             dist[b_x + b_y*stride][0]= distance >= 0 ? distance-b_x : 9999;
     176             :         }
     177             :     }
     178        2968 :     for(b_x=0; b_x<w; b_x++){
     179        2860 :         int color= 1024;
     180        2860 :         int distance= -1;
     181       75922 :         for(b_y=0; b_y<h; b_y++){
     182       73062 :             int mb_index_j= (b_x>>is_luma) + (b_y>>is_luma)*s->mb_stride;
     183       73062 :             int error_j= s->error_status_table[mb_index_j];
     184       73062 :             int intra_j = IS_INTRA(s->cur_pic.mb_type[mb_index_j]);
     185       73062 :             if(intra_j==0 || !(error_j&ER_DC_ERROR)){
     186       70938 :                 color= dc[b_x + b_y*stride];
     187       70938 :                 distance= b_y;
     188             :             }
     189       73062 :             col [b_x + b_y*stride][3]= color;
     190       73062 :             dist[b_x + b_y*stride][3]= distance >= 0 ? b_y-distance : 9999;
     191             :         }
     192        2860 :         color= 1024;
     193        2860 :         distance= -1;
     194       75922 :         for(b_y=h-1; b_y>=0; b_y--){
     195       73062 :             int mb_index_j= (b_x>>is_luma) + (b_y>>is_luma)*s->mb_stride;
     196       73062 :             int error_j= s->error_status_table[mb_index_j];
     197       73062 :             int intra_j = IS_INTRA(s->cur_pic.mb_type[mb_index_j]);
     198       73062 :             if(intra_j==0 || !(error_j&ER_DC_ERROR)){
     199       70938 :                 color= dc[b_x + b_y*stride];
     200       70938 :                 distance= b_y;
     201             :             }
     202       73062 :             col [b_x + b_y*stride][2]= color;
     203       73062 :             dist[b_x + b_y*stride][2]= distance >= 0 ? distance-b_y : 9999;
     204             :         }
     205             :     }
     206             : 
     207        2448 :     for (b_y = 0; b_y < h; b_y++) {
     208       75402 :         for (b_x = 0; b_x < w; b_x++) {
     209             :             int mb_index, error, j;
     210             :             int64_t guess, weight_sum;
     211       73062 :             mb_index = (b_x >> is_luma) + (b_y >> is_luma) * s->mb_stride;
     212       73062 :             error    = s->error_status_table[mb_index];
     213             : 
     214       73062 :             if (IS_INTER(s->cur_pic.mb_type[mb_index]))
     215       48744 :                 continue; // inter
     216       24318 :             if (!(error & ER_DC_ERROR))
     217       22194 :                 continue; // dc-ok
     218             : 
     219        2124 :             weight_sum = 0;
     220        2124 :             guess      = 0;
     221       10620 :             for (j = 0; j < 4; j++) {
     222        8496 :                 int64_t weight  = 256 * 256 * 256 * 16 / FFMAX(dist[b_x + b_y*stride][j], 1);
     223        8496 :                 guess          += weight*(int64_t)col[b_x + b_y*stride][j];
     224        8496 :                 weight_sum     += weight;
     225             :             }
     226        2124 :             guess = (guess + weight_sum / 2) / weight_sum;
     227        2124 :             dc[b_x + b_y * stride] = guess;
     228             :         }
     229             :     }
     230             : 
     231         108 : fail:
     232         108 :     av_freep(&col);
     233         108 :     av_freep(&dist);
     234         108 : }
     235             : 
     236             : /**
     237             :  * simple horizontal deblocking filter used for error resilience
     238             :  * @param w     width in 8 pixel blocks
     239             :  * @param h     height in 8 pixel blocks
     240             :  */
     241         108 : static void h_block_filter(ERContext *s, uint8_t *dst, int w,
     242             :                            int h, ptrdiff_t stride, int is_luma)
     243             : {
     244             :     int b_x, b_y;
     245             :     ptrdiff_t mvx_stride, mvy_stride;
     246         108 :     const uint8_t *cm = ff_crop_tab + MAX_NEG_CROP;
     247         108 :     set_mv_strides(s, &mvx_stride, &mvy_stride);
     248         108 :     mvx_stride >>= is_luma;
     249         108 :     mvy_stride *= mvx_stride;
     250             : 
     251        2448 :     for (b_y = 0; b_y < h; b_y++) {
     252       73062 :         for (b_x = 0; b_x < w - 1; b_x++) {
     253             :             int y;
     254       70722 :             int left_status  = s->error_status_table[( b_x      >> is_luma) + (b_y >> is_luma) * s->mb_stride];
     255       70722 :             int right_status = s->error_status_table[((b_x + 1) >> is_luma) + (b_y >> is_luma) * s->mb_stride];
     256       70722 :             int left_intra   = IS_INTRA(s->cur_pic.mb_type[( b_x      >> is_luma) + (b_y >> is_luma) * s->mb_stride]);
     257       70722 :             int right_intra  = IS_INTRA(s->cur_pic.mb_type[((b_x + 1) >> is_luma) + (b_y >> is_luma) * s->mb_stride]);
     258       70722 :             int left_damage  = left_status & ER_MB_ERROR;
     259       70722 :             int right_damage = right_status & ER_MB_ERROR;
     260       70722 :             int offset       = b_x * 8 + b_y * stride * 8;
     261       70722 :             int16_t *left_mv  = s->cur_pic.motion_val[0][mvy_stride * b_y + mvx_stride *  b_x];
     262       70722 :             int16_t *right_mv = s->cur_pic.motion_val[0][mvy_stride * b_y + mvx_stride * (b_x + 1)];
     263       70722 :             if (!(left_damage || right_damage))
     264       48188 :                 continue; // both undamaged
     265       42988 :             if ((!left_intra) && (!right_intra) &&
     266       40908 :                 FFABS(left_mv[0] - right_mv[0]) +
     267       20454 :                 FFABS(left_mv[1] + right_mv[1]) < 2)
     268        4593 :                 continue;
     269             : 
     270      161469 :             for (y = 0; y < 8; y++) {
     271             :                 int a, b, c, d;
     272             : 
     273      143528 :                 a = dst[offset + 7 + y * stride] - dst[offset + 6 + y * stride];
     274      143528 :                 b = dst[offset + 8 + y * stride] - dst[offset + 7 + y * stride];
     275      143528 :                 c = dst[offset + 9 + y * stride] - dst[offset + 8 + y * stride];
     276             : 
     277      143528 :                 d = FFABS(b) - ((FFABS(a) + FFABS(c) + 1) >> 1);
     278      143528 :                 d = FFMAX(d, 0);
     279      143528 :                 if (b < 0)
     280       47752 :                     d = -d;
     281             : 
     282      143528 :                 if (d == 0)
     283       95947 :                     continue;
     284             : 
     285       47581 :                 if (!(left_damage && right_damage))
     286         825 :                     d = d * 16 / 9;
     287             : 
     288       47581 :                 if (left_damage) {
     289       47228 :                     dst[offset + 7 + y * stride] = cm[dst[offset + 7 + y * stride] + ((d * 7) >> 4)];
     290       47228 :                     dst[offset + 6 + y * stride] = cm[dst[offset + 6 + y * stride] + ((d * 5) >> 4)];
     291       47228 :                     dst[offset + 5 + y * stride] = cm[dst[offset + 5 + y * stride] + ((d * 3) >> 4)];
     292       47228 :                     dst[offset + 4 + y * stride] = cm[dst[offset + 4 + y * stride] + ((d * 1) >> 4)];
     293             :                 }
     294       47581 :                 if (right_damage) {
     295       47109 :                     dst[offset + 8 + y * stride] = cm[dst[offset +  8 + y * stride] - ((d * 7) >> 4)];
     296       47109 :                     dst[offset + 9 + y * stride] = cm[dst[offset +  9 + y * stride] - ((d * 5) >> 4)];
     297       47109 :                     dst[offset + 10+ y * stride] = cm[dst[offset + 10 + y * stride] - ((d * 3) >> 4)];
     298       47109 :                     dst[offset + 11+ y * stride] = cm[dst[offset + 11 + y * stride] - ((d * 1) >> 4)];
     299             :                 }
     300             :             }
     301             :         }
     302             :     }
     303         108 : }
     304             : 
     305             : /**
     306             :  * simple vertical deblocking filter used for error resilience
     307             :  * @param w     width in 8 pixel blocks
     308             :  * @param h     height in 8 pixel blocks
     309             :  */
     310         108 : static void v_block_filter(ERContext *s, uint8_t *dst, int w, int h,
     311             :                            ptrdiff_t stride, int is_luma)
     312             : {
     313             :     int b_x, b_y;
     314             :     ptrdiff_t mvx_stride, mvy_stride;
     315         108 :     const uint8_t *cm = ff_crop_tab + MAX_NEG_CROP;
     316         108 :     set_mv_strides(s, &mvx_stride, &mvy_stride);
     317         108 :     mvx_stride >>= is_luma;
     318         108 :     mvy_stride *= mvx_stride;
     319             : 
     320        2340 :     for (b_y = 0; b_y < h - 1; b_y++) {
     321       72434 :         for (b_x = 0; b_x < w; b_x++) {
     322             :             int x;
     323       70202 :             int top_status    = s->error_status_table[(b_x >> is_luma) +  (b_y      >> is_luma) * s->mb_stride];
     324       70202 :             int bottom_status = s->error_status_table[(b_x >> is_luma) + ((b_y + 1) >> is_luma) * s->mb_stride];
     325       70202 :             int top_intra     = IS_INTRA(s->cur_pic.mb_type[(b_x >> is_luma) + ( b_y      >> is_luma) * s->mb_stride]);
     326       70202 :             int bottom_intra  = IS_INTRA(s->cur_pic.mb_type[(b_x >> is_luma) + ((b_y + 1) >> is_luma) * s->mb_stride]);
     327       70202 :             int top_damage    = top_status & ER_MB_ERROR;
     328       70202 :             int bottom_damage = bottom_status & ER_MB_ERROR;
     329       70202 :             int offset        = b_x * 8 + b_y * stride * 8;
     330             : 
     331       70202 :             int16_t *top_mv    = s->cur_pic.motion_val[0][mvy_stride *  b_y      + mvx_stride * b_x];
     332       70202 :             int16_t *bottom_mv = s->cur_pic.motion_val[0][mvy_stride * (b_y + 1) + mvx_stride * b_x];
     333             : 
     334       70202 :             if (!(top_damage || bottom_damage))
     335       44844 :                 continue; // both undamaged
     336             : 
     337       46976 :             if ((!top_intra) && (!bottom_intra) &&
     338       43236 :                 FFABS(top_mv[0] - bottom_mv[0]) +
     339       21618 :                 FFABS(top_mv[1] + bottom_mv[1]) < 2)
     340        4632 :                 continue;
     341             : 
     342      186534 :             for (x = 0; x < 8; x++) {
     343             :                 int a, b, c, d;
     344             : 
     345      165808 :                 a = dst[offset + x + 7 * stride] - dst[offset + x + 6 * stride];
     346      165808 :                 b = dst[offset + x + 8 * stride] - dst[offset + x + 7 * stride];
     347      165808 :                 c = dst[offset + x + 9 * stride] - dst[offset + x + 8 * stride];
     348             : 
     349      165808 :                 d = FFABS(b) - ((FFABS(a) + FFABS(c) + 1) >> 1);
     350      165808 :                 d = FFMAX(d, 0);
     351      165808 :                 if (b < 0)
     352       60540 :                     d = -d;
     353             : 
     354      165808 :                 if (d == 0)
     355      104256 :                     continue;
     356             : 
     357       61552 :                 if (!(top_damage && bottom_damage))
     358       18139 :                     d = d * 16 / 9;
     359             : 
     360       61552 :                 if (top_damage) {
     361       52548 :                     dst[offset + x +  7 * stride] = cm[dst[offset + x +  7 * stride] + ((d * 7) >> 4)];
     362       52548 :                     dst[offset + x +  6 * stride] = cm[dst[offset + x +  6 * stride] + ((d * 5) >> 4)];
     363       52548 :                     dst[offset + x +  5 * stride] = cm[dst[offset + x +  5 * stride] + ((d * 3) >> 4)];
     364       52548 :                     dst[offset + x +  4 * stride] = cm[dst[offset + x +  4 * stride] + ((d * 1) >> 4)];
     365             :                 }
     366       61552 :                 if (bottom_damage) {
     367       52417 :                     dst[offset + x +  8 * stride] = cm[dst[offset + x +  8 * stride] - ((d * 7) >> 4)];
     368       52417 :                     dst[offset + x +  9 * stride] = cm[dst[offset + x +  9 * stride] - ((d * 5) >> 4)];
     369       52417 :                     dst[offset + x + 10 * stride] = cm[dst[offset + x + 10 * stride] - ((d * 3) >> 4)];
     370       52417 :                     dst[offset + x + 11 * stride] = cm[dst[offset + x + 11 * stride] - ((d * 1) >> 4)];
     371             :                 }
     372             :             }
     373             :         }
     374             :     }
     375         108 : }
     376             : 
     377             : #define MV_FROZEN    8
     378             : #define MV_CHANGED   4
     379             : #define MV_UNCHANGED 2
     380             : #define MV_LISTED    1
     381       44328 : static av_always_inline void add_blocklist(int (*blocklist)[2], int *blocklist_length, uint8_t *fixed, int mb_x, int mb_y, int mb_xy)
     382             : {
     383       44328 :     if (fixed[mb_xy])
     384       41302 :         return;
     385        3026 :     fixed[mb_xy] = MV_LISTED;
     386        3026 :     blocklist[ *blocklist_length   ][0] = mb_x;
     387        3026 :     blocklist[(*blocklist_length)++][1] = mb_y;
     388             : }
     389             : 
     390          36 : static void guess_mv(ERContext *s)
     391             : {
     392             :     int (*blocklist)[2], (*next_blocklist)[2];
     393             :     uint8_t *fixed;
     394          36 :     const ptrdiff_t mb_stride = s->mb_stride;
     395          36 :     const int mb_width  = s->mb_width;
     396          36 :     int mb_height = s->mb_height;
     397             :     int i, depth, num_avail;
     398             :     int mb_x, mb_y;
     399             :     ptrdiff_t mot_step, mot_stride;
     400             :     int blocklist_length, next_blocklist_length;
     401             : 
     402          36 :     if (s->last_pic.f && s->last_pic.f->data[0])
     403          31 :         mb_height = FFMIN(mb_height, (s->last_pic.f->height+15)>>4);
     404          36 :     if (s->next_pic.f && s->next_pic.f->data[0])
     405          29 :         mb_height = FFMIN(mb_height, (s->next_pic.f->height+15)>>4);
     406             : 
     407          36 :     blocklist      = (int (*)[2])s->er_temp_buffer;
     408          36 :     next_blocklist = blocklist + s->mb_stride * s->mb_height;
     409          36 :     fixed          = (uint8_t *)(next_blocklist + s->mb_stride * s->mb_height);
     410             : 
     411          36 :     set_mv_strides(s, &mot_step, &mot_stride);
     412             : 
     413          36 :     num_avail = 0;
     414          36 :     if (s->last_pic.motion_val[0])
     415          31 :         ff_thread_await_progress(s->last_pic.tf, mb_height-1, 0);
     416       12213 :     for (i = 0; i < mb_width * mb_height; i++) {
     417       12177 :         const int mb_xy = s->mb_index2xy[i];
     418       12177 :         int f = 0;
     419       12177 :         int error = s->error_status_table[mb_xy];
     420             : 
     421       12177 :         if (IS_INTRA(s->cur_pic.mb_type[mb_xy]))
     422        4053 :             f = MV_FROZEN; // intra // FIXME check
     423       12177 :         if (!(error & ER_MV_ERROR))
     424        8302 :             f = MV_FROZEN; // inter with undamaged MV
     425             : 
     426       12177 :         fixed[mb_xy] = f;
     427       12177 :         if (f == MV_FROZEN)
     428        8656 :             num_avail++;
     429        3521 :         else if(s->last_pic.f->data[0] && s->last_pic.motion_val[0]){
     430        3521 :             const int mb_y= mb_xy / s->mb_stride;
     431        3521 :             const int mb_x= mb_xy % s->mb_stride;
     432        3521 :             const int mot_index= (mb_x + mb_y*mot_stride) * mot_step;
     433        3521 :             s->cur_pic.motion_val[0][mot_index][0]= s->last_pic.motion_val[0][mot_index][0];
     434        3521 :             s->cur_pic.motion_val[0][mot_index][1]= s->last_pic.motion_val[0][mot_index][1];
     435        3521 :             s->cur_pic.ref_index[0][4*mb_xy]      = s->last_pic.ref_index[0][4*mb_xy];
     436             :         }
     437             :     }
     438             : 
     439          72 :     if ((!(s->avctx->error_concealment&FF_EC_GUESS_MVS)) ||
     440          36 :         num_avail <= mb_width / 2) {
     441          50 :         for (mb_y = 0; mb_y < mb_height; mb_y++) {
     442         540 :             for (mb_x = 0; mb_x < s->mb_width; mb_x++) {
     443         495 :                 const int mb_xy = mb_x + mb_y * s->mb_stride;
     444         495 :                 int mv_dir = (s->last_pic.f && s->last_pic.f->data[0]) ? MV_DIR_FORWARD : MV_DIR_BACKWARD;
     445             : 
     446         495 :                 if (IS_INTRA(s->cur_pic.mb_type[mb_xy]))
     447           0 :                     continue;
     448         495 :                 if (!(s->error_status_table[mb_xy] & ER_MV_ERROR))
     449           0 :                     continue;
     450             : 
     451         495 :                 s->mv[0][0][0] = 0;
     452         495 :                 s->mv[0][0][1] = 0;
     453         495 :                 s->decode_mb(s->opaque, 0, mv_dir, MV_TYPE_16X16, &s->mv,
     454             :                              mb_x, mb_y, 0, 0);
     455             :             }
     456             :         }
     457           5 :         return;
     458             :     }
     459             : 
     460          31 :     blocklist_length = 0;
     461         571 :     for (mb_y = 0; mb_y < mb_height; mb_y++) {
     462       12222 :         for (mb_x = 0; mb_x < mb_width; mb_x++) {
     463       11682 :             const int mb_xy = mb_x + mb_y * mb_stride;
     464       11682 :             if (fixed[mb_xy] == MV_FROZEN) {
     465        8656 :                 if (mb_x)               add_blocklist(blocklist, &blocklist_length, fixed, mb_x - 1, mb_y, mb_xy - 1);
     466        8656 :                 if (mb_y)               add_blocklist(blocklist, &blocklist_length, fixed, mb_x, mb_y - 1, mb_xy - mb_stride);
     467        8656 :                 if (mb_x+1 < mb_width)  add_blocklist(blocklist, &blocklist_length, fixed, mb_x + 1, mb_y, mb_xy + 1);
     468        8656 :                 if (mb_y+1 < mb_height) add_blocklist(blocklist, &blocklist_length, fixed, mb_x, mb_y + 1, mb_xy + mb_stride);
     469             :             }
     470             :         }
     471             :     }
     472             : 
     473         119 :     for (depth = 0; ; depth++) {
     474             :         int changed, pass, none_left;
     475             :         int blocklist_index;
     476             : 
     477         119 :         none_left = 1;
     478         119 :         changed   = 1;
     479         742 :         for (pass = 0; (changed || pass < 2) && pass < 10; pass++) {
     480         623 :             int score_sum = 0;
     481             : 
     482         623 :             changed = 0;
     483       21385 :             for (blocklist_index = 0; blocklist_index < blocklist_length; blocklist_index++) {
     484       20762 :                 const int mb_x = blocklist[blocklist_index][0];
     485       20762 :                 const int mb_y = blocklist[blocklist_index][1];
     486       20762 :                 const int mb_xy = mb_x + mb_y * mb_stride;
     487             :                 int mv_predictor[8][2];
     488             :                 int ref[8];
     489             :                 int pred_count;
     490             :                 int j;
     491             :                 int best_score;
     492             :                 int best_pred;
     493             :                 int mot_index;
     494             :                 int prev_x, prev_y, prev_ref;
     495             : 
     496       20762 :                 if ((mb_x ^ mb_y ^ pass) & 1)
     497       23246 :                     continue;
     498             :                 av_assert2(fixed[mb_xy] != MV_FROZEN);
     499             : 
     500             : 
     501             :                 av_assert1(!IS_INTRA(s->cur_pic.mb_type[mb_xy]));
     502             :                 av_assert1(s->last_pic.f && s->last_pic.f->data[0]);
     503             : 
     504       10375 :                 j = 0;
     505       10375 :                 if (mb_x > 0)
     506        9916 :                     j |= fixed[mb_xy - 1];
     507       10375 :                 if (mb_x + 1 < mb_width)
     508        9913 :                     j |= fixed[mb_xy + 1];
     509       10375 :                 if (mb_y > 0)
     510       10375 :                     j |= fixed[mb_xy - mb_stride];
     511       10375 :                 if (mb_y + 1 < mb_height)
     512       10292 :                     j |= fixed[mb_xy + mb_stride];
     513             : 
     514             :                 av_assert2(j & MV_FROZEN);
     515             : 
     516       10375 :                 if (!(j & MV_CHANGED) && pass > 1)
     517        2472 :                     continue;
     518             : 
     519        7903 :                 none_left = 0;
     520        7903 :                 pred_count = 0;
     521        7903 :                 mot_index  = (mb_x + mb_y * mot_stride) * mot_step;
     522             : 
     523        7903 :                 if (mb_x > 0 && fixed[mb_xy - 1] > 1) {
     524        6124 :                     mv_predictor[pred_count][0] =
     525        6124 :                         s->cur_pic.motion_val[0][mot_index - mot_step][0];
     526        6124 :                     mv_predictor[pred_count][1] =
     527        6124 :                         s->cur_pic.motion_val[0][mot_index - mot_step][1];
     528        6124 :                     ref[pred_count] =
     529        6124 :                         s->cur_pic.ref_index[0][4 * (mb_xy - 1)];
     530        6124 :                     pred_count++;
     531             :                 }
     532        7903 :                 if (mb_x + 1 < mb_width && fixed[mb_xy + 1] > 1) {
     533        6137 :                     mv_predictor[pred_count][0] =
     534        6137 :                         s->cur_pic.motion_val[0][mot_index + mot_step][0];
     535        6137 :                     mv_predictor[pred_count][1] =
     536        6137 :                         s->cur_pic.motion_val[0][mot_index + mot_step][1];
     537        6137 :                     ref[pred_count] =
     538        6137 :                         s->cur_pic.ref_index[0][4 * (mb_xy + 1)];
     539        6137 :                     pred_count++;
     540             :                 }
     541        7903 :                 if (mb_y > 0 && fixed[mb_xy - mb_stride] > 1) {
     542        5118 :                     mv_predictor[pred_count][0] =
     543        5118 :                         s->cur_pic.motion_val[0][mot_index - mot_stride * mot_step][0];
     544        5118 :                     mv_predictor[pred_count][1] =
     545        5118 :                         s->cur_pic.motion_val[0][mot_index - mot_stride * mot_step][1];
     546        5118 :                     ref[pred_count] =
     547        5118 :                         s->cur_pic.ref_index[0][4 * (mb_xy - s->mb_stride)];
     548        5118 :                     pred_count++;
     549             :                 }
     550        7903 :                 if (mb_y + 1<mb_height && fixed[mb_xy + mb_stride] > 1) {
     551        4796 :                     mv_predictor[pred_count][0] =
     552        4796 :                         s->cur_pic.motion_val[0][mot_index + mot_stride * mot_step][0];
     553        4796 :                     mv_predictor[pred_count][1] =
     554        4796 :                         s->cur_pic.motion_val[0][mot_index + mot_stride * mot_step][1];
     555        4796 :                     ref[pred_count] =
     556        4796 :                         s->cur_pic.ref_index[0][4 * (mb_xy + s->mb_stride)];
     557        4796 :                     pred_count++;
     558             :                 }
     559        7903 :                 if (pred_count == 0)
     560           0 :                     continue;
     561             : 
     562        7903 :                 if (pred_count > 1) {
     563        6589 :                     int sum_x = 0, sum_y = 0, sum_r = 0;
     564             :                     int max_x, max_y, min_x, min_y, max_r, min_r;
     565             : 
     566       27450 :                     for (j = 0; j < pred_count; j++) {
     567       20861 :                         sum_x += mv_predictor[j][0];
     568       20861 :                         sum_y += mv_predictor[j][1];
     569       20861 :                         sum_r += ref[j];
     570       20861 :                         if (j && ref[j] != ref[j - 1])
     571           0 :                             goto skip_mean_and_median;
     572             :                     }
     573             : 
     574             :                     /* mean */
     575        6589 :                     mv_predictor[pred_count][0] = sum_x / j;
     576        6589 :                     mv_predictor[pred_count][1] = sum_y / j;
     577        6589 :                              ref[pred_count]    = sum_r / j;
     578             : 
     579             :                     /* median */
     580        6589 :                     if (pred_count >= 3) {
     581        6014 :                         min_y = min_x = min_r =  99999;
     582        6014 :                         max_y = max_x = max_r = -99999;
     583             :                     } else {
     584         575 :                         min_x = min_y = max_x = max_y = min_r = max_r = 0;
     585             :                     }
     586       27450 :                     for (j = 0; j < pred_count; j++) {
     587       20861 :                         max_x = FFMAX(max_x, mv_predictor[j][0]);
     588       20861 :                         max_y = FFMAX(max_y, mv_predictor[j][1]);
     589       20861 :                         max_r = FFMAX(max_r, ref[j]);
     590       20861 :                         min_x = FFMIN(min_x, mv_predictor[j][0]);
     591       20861 :                         min_y = FFMIN(min_y, mv_predictor[j][1]);
     592       20861 :                         min_r = FFMIN(min_r, ref[j]);
     593             :                     }
     594        6589 :                     mv_predictor[pred_count + 1][0] = sum_x - max_x - min_x;
     595        6589 :                     mv_predictor[pred_count + 1][1] = sum_y - max_y - min_y;
     596        6589 :                              ref[pred_count + 1]    = sum_r - max_r - min_r;
     597             : 
     598        6589 :                     if (pred_count == 4) {
     599        1669 :                         mv_predictor[pred_count + 1][0] /= 2;
     600        1669 :                         mv_predictor[pred_count + 1][1] /= 2;
     601        1669 :                                  ref[pred_count + 1]    /= 2;
     602             :                     }
     603        6589 :                     pred_count += 2;
     604             :                 }
     605             : 
     606        9217 : skip_mean_and_median:
     607             :                 /* zero MV */
     608        7903 :                 mv_predictor[pred_count][0] =
     609        7903 :                 mv_predictor[pred_count][1] =
     610        7903 :                          ref[pred_count]    = 0;
     611        7903 :                 pred_count++;
     612             : 
     613        7903 :                 prev_x   = s->cur_pic.motion_val[0][mot_index][0];
     614        7903 :                 prev_y   = s->cur_pic.motion_val[0][mot_index][1];
     615        7903 :                 prev_ref = s->cur_pic.ref_index[0][4 * mb_xy];
     616             : 
     617             :                 /* last MV */
     618        7903 :                 mv_predictor[pred_count][0] = prev_x;
     619        7903 :                 mv_predictor[pred_count][1] = prev_y;
     620        7903 :                          ref[pred_count]    = prev_ref;
     621        7903 :                 pred_count++;
     622             : 
     623        7903 :                 best_pred = 0;
     624        7903 :                 best_score = 256 * 256 * 256 * 64;
     625       59062 :                 for (j = 0; j < pred_count; j++) {
     626       51159 :                     int *linesize = s->cur_pic.f->linesize;
     627       51159 :                     int score = 0;
     628      102318 :                     uint8_t *src = s->cur_pic.f->data[0] +
     629       51159 :                                    mb_x * 16 + mb_y * 16 * linesize[0];
     630             : 
     631       51159 :                     s->cur_pic.motion_val[0][mot_index][0] =
     632       51159 :                         s->mv[0][0][0] = mv_predictor[j][0];
     633       51159 :                     s->cur_pic.motion_val[0][mot_index][1] =
     634       51159 :                         s->mv[0][0][1] = mv_predictor[j][1];
     635             : 
     636             :                     // predictor intra or otherwise not available
     637       51159 :                     if (ref[j] < 0)
     638           0 :                         continue;
     639             : 
     640       51159 :                     s->decode_mb(s->opaque, ref[j], MV_DIR_FORWARD,
     641             :                                  MV_TYPE_16X16, &s->mv, mb_x, mb_y, 0, 0);
     642             : 
     643       51159 :                     if (mb_x > 0 && fixed[mb_xy - 1] > 1) {
     644             :                         int k;
     645      753508 :                         for (k = 0; k < 16; k++)
     646      709184 :                             score += FFABS(src[k * linesize[0] - 1] -
     647             :                                            src[k * linesize[0]]);
     648             :                     }
     649       51159 :                     if (mb_x + 1 < mb_width && fixed[mb_xy + 1] > 1) {
     650             :                         int k;
     651      754222 :                         for (k = 0; k < 16; k++)
     652      709856 :                             score += FFABS(src[k * linesize[0] + 15] -
     653             :                                            src[k * linesize[0] + 16]);
     654             :                     }
     655       51159 :                     if (mb_y > 0 && fixed[mb_xy - mb_stride] > 1) {
     656             :                         int k;
     657      584477 :                         for (k = 0; k < 16; k++)
     658      550096 :                             score += FFABS(src[k - linesize[0]] - src[k]);
     659             :                     }
     660       51159 :                     if (mb_y + 1 < mb_height && fixed[mb_xy + mb_stride] > 1) {
     661             :                         int k;
     662      551208 :                         for (k = 0; k < 16; k++)
     663      518784 :                             score += FFABS(src[k + linesize[0] * 15] -
     664             :                                            src[k + linesize[0] * 16]);
     665             :                     }
     666             : 
     667       51159 :                     if (score <= best_score) { // <= will favor the last MV
     668       26196 :                         best_score = score;
     669       26196 :                         best_pred  = j;
     670             :                     }
     671             :                 }
     672        7903 :                 score_sum += best_score;
     673        7903 :                 s->mv[0][0][0] = mv_predictor[best_pred][0];
     674        7903 :                 s->mv[0][0][1] = mv_predictor[best_pred][1];
     675             : 
     676       23709 :                 for (i = 0; i < mot_step; i++)
     677       47418 :                     for (j = 0; j < mot_step; j++) {
     678       31612 :                         s->cur_pic.motion_val[0][mot_index + i + j * mot_stride][0] = s->mv[0][0][0];
     679       31612 :                         s->cur_pic.motion_val[0][mot_index + i + j * mot_stride][1] = s->mv[0][0][1];
     680             :                     }
     681             : 
     682        7903 :                 s->decode_mb(s->opaque, ref[best_pred], MV_DIR_FORWARD,
     683             :                              MV_TYPE_16X16, &s->mv, mb_x, mb_y, 0, 0);
     684             : 
     685             : 
     686        7903 :                 if (s->mv[0][0][0] != prev_x || s->mv[0][0][1] != prev_y) {
     687        3425 :                     fixed[mb_xy] = MV_CHANGED;
     688        3425 :                     changed++;
     689             :                 } else
     690        4478 :                     fixed[mb_xy] = MV_UNCHANGED;
     691             :             }
     692             :         }
     693             : 
     694         119 :         if (none_left)
     695          31 :             return;
     696             : 
     697          88 :         next_blocklist_length = 0;
     698             : 
     699        3114 :         for (blocklist_index = 0; blocklist_index < blocklist_length; blocklist_index++) {
     700        3026 :             const int mb_x = blocklist[blocklist_index][0];
     701        3026 :             const int mb_y = blocklist[blocklist_index][1];
     702        3026 :             const int mb_xy = mb_x + mb_y * mb_stride;
     703             : 
     704        3026 :             if (fixed[mb_xy] & (MV_CHANGED|MV_UNCHANGED|MV_FROZEN)) {
     705        3026 :                 fixed[mb_xy] = MV_FROZEN;
     706        3026 :                 if (mb_x > 0)
     707        2890 :                     add_blocklist(next_blocklist, &next_blocklist_length, fixed, mb_x - 1, mb_y, mb_xy - 1);
     708        3026 :                 if (mb_y > 0)
     709        3026 :                     add_blocklist(next_blocklist, &next_blocklist_length, fixed, mb_x, mb_y - 1, mb_xy - mb_stride);
     710        3026 :                 if (mb_x + 1 < mb_width)
     711        2891 :                     add_blocklist(next_blocklist, &next_blocklist_length, fixed, mb_x + 1, mb_y, mb_xy + 1);
     712        3026 :                 if (mb_y + 1 < mb_height)
     713        2992 :                     add_blocklist(next_blocklist, &next_blocklist_length, fixed, mb_x, mb_y + 1, mb_xy + mb_stride);
     714             :             }
     715             :         }
     716          88 :         av_assert0(next_blocklist_length <= mb_height * mb_width);
     717          88 :         FFSWAP(int , blocklist_length, next_blocklist_length);
     718          88 :         FFSWAP(void*, blocklist, next_blocklist);
     719             :     }
     720             : }
     721             : 
     722          36 : static int is_intra_more_likely(ERContext *s)
     723             : {
     724             :     int is_intra_likely, i, j, undamaged_count, skip_amount, mb_x, mb_y;
     725             : 
     726          36 :     if (!s->last_pic.f || !s->last_pic.f->data[0])
     727           5 :         return 1; // no previous frame available -> use spatial prediction
     728             : 
     729          31 :     if (s->avctx->error_concealment & FF_EC_FAVOR_INTER)
     730           0 :         return 0;
     731             : 
     732          31 :     undamaged_count = 0;
     733       10822 :     for (i = 0; i < s->mb_num; i++) {
     734       10791 :         const int mb_xy = s->mb_index2xy[i];
     735       10791 :         const int error = s->error_status_table[mb_xy];
     736       10791 :         if (!((error & ER_DC_ERROR) && (error & ER_MV_ERROR)))
     737        7270 :             undamaged_count++;
     738             :     }
     739             : 
     740          31 :     if (undamaged_count < 5)
     741           5 :         return 0; // almost all MBs damaged -> use temporal prediction
     742             : 
     743             :     // prevent dsp.sad() check, that requires access to the image
     744             :     if (CONFIG_XVMC    &&
     745             :         s->avctx->hwaccel && s->avctx->hwaccel->decode_mb &&
     746             :         s->cur_pic.f->pict_type == AV_PICTURE_TYPE_I)
     747             :         return 1;
     748             : 
     749          26 :     skip_amount     = FFMAX(undamaged_count / 50, 1); // check only up to 50 MBs
     750          26 :     is_intra_likely = 0;
     751             : 
     752          26 :     j = 0;
     753         468 :     for (mb_y = 0; mb_y < s->mb_height - 1; mb_y++) {
     754       10166 :         for (mb_x = 0; mb_x < s->mb_width; mb_x++) {
     755             :             int error;
     756        9724 :             const int mb_xy = mb_x + mb_y * s->mb_stride;
     757             : 
     758        9724 :             error = s->error_status_table[mb_xy];
     759        9724 :             if ((error & ER_DC_ERROR) && (error & ER_MV_ERROR))
     760        2992 :                 continue; // skip damaged
     761             : 
     762        6732 :             j++;
     763             :             // skip a few to speed things up
     764        6732 :             if ((j % skip_amount) != 0)
     765        5384 :                 continue;
     766             : 
     767        1348 :             if (s->cur_pic.f->pict_type == AV_PICTURE_TYPE_I) {
     768         355 :                 int *linesize = s->cur_pic.f->linesize;
     769         710 :                 uint8_t *mb_ptr      = s->cur_pic.f->data[0] +
     770         355 :                                        mb_x * 16 + mb_y * 16 * linesize[0];
     771         710 :                 uint8_t *last_mb_ptr = s->last_pic.f->data[0] +
     772         355 :                                        mb_x * 16 + mb_y * 16 * linesize[0];
     773             : 
     774         355 :                 if (s->avctx->codec_id == AV_CODEC_ID_H264) {
     775             :                     // FIXME
     776             :                 } else {
     777         355 :                     ff_thread_await_progress(s->last_pic.tf, mb_y, 0);
     778             :                 }
     779         710 :                 is_intra_likely += s->mecc.sad[0](NULL, last_mb_ptr, mb_ptr,
     780         355 :                                                   linesize[0], 16);
     781             :                 // FIXME need await_progress() here
     782        1065 :                 is_intra_likely -= s->mecc.sad[0](NULL, last_mb_ptr,
     783         355 :                                                   last_mb_ptr + linesize[0] * 16,
     784         355 :                                                   linesize[0], 16);
     785             :             } else {
     786         993 :                 if (IS_INTRA(s->cur_pic.mb_type[mb_xy]))
     787          58 :                    is_intra_likely++;
     788             :                 else
     789         935 :                    is_intra_likely--;
     790             :             }
     791             :         }
     792             :     }
     793             : //      av_log(NULL, AV_LOG_ERROR, "is_intra_likely: %d type:%d\n", is_intra_likely, s->pict_type);
     794          26 :     return is_intra_likely > 0;
     795             : }
     796             : 
     797       33266 : void ff_er_frame_start(ERContext *s)
     798             : {
     799       33266 :     if (!s->avctx->error_concealment)
     800           0 :         return;
     801             : 
     802       33266 :     if (!s->mecc_inited) {
     803         702 :         ff_me_cmp_init(&s->mecc, s->avctx);
     804         702 :         s->mecc_inited = 1;
     805             :     }
     806             : 
     807       33266 :     memset(s->error_status_table, ER_MB_ERROR | VP_START | ER_MB_END,
     808       33266 :            s->mb_stride * s->mb_height * sizeof(uint8_t));
     809       33266 :     atomic_init(&s->error_count, 3 * s->mb_num);
     810       33266 :     s->error_occurred = 0;
     811             : }
     812             : 
     813      128420 : static int er_supported(ERContext *s)
     814             : {
     815      256840 :     if(s->avctx->hwaccel && s->avctx->hwaccel->decode_slice           ||
     816      247293 :        !s->cur_pic.f                                                  ||
     817      118873 :        s->cur_pic.field_picture
     818             :     )
     819       26255 :         return 0;
     820      102165 :     return 1;
     821             : }
     822             : 
     823             : /**
     824             :  * Add a slice.
     825             :  * @param endx   x component of the last macroblock, can be -1
     826             :  *               for the last of the previous line
     827             :  * @param status the status at the end (ER_MV_END, ER_AC_ERROR, ...), it is
     828             :  *               assumed that no earlier end or error of the same type occurred
     829             :  */
     830      161039 : void ff_er_add_slice(ERContext *s, int startx, int starty,
     831             :                      int endx, int endy, int status)
     832             : {
     833      161039 :     const int start_i  = av_clip(startx + starty * s->mb_width, 0, s->mb_num - 1);
     834      161039 :     const int end_i    = av_clip(endx   + endy   * s->mb_width, 0, s->mb_num);
     835      161039 :     const int start_xy = s->mb_index2xy[start_i];
     836      161039 :     const int end_xy   = s->mb_index2xy[end_i];
     837      161039 :     int mask           = -1;
     838             : 
     839      161039 :     if (s->avctx->hwaccel && s->avctx->hwaccel->decode_slice)
     840           0 :         return;
     841             : 
     842      161039 :     if (start_i > end_i || start_xy > end_xy) {
     843           0 :         av_log(s->avctx, AV_LOG_ERROR,
     844             :                "internal error, slice end before start\n");
     845           0 :         return;
     846             :     }
     847             : 
     848      161039 :     if (!s->avctx->error_concealment)
     849           0 :         return;
     850             : 
     851      161039 :     mask &= ~VP_START;
     852      161039 :     if (status & (ER_AC_ERROR | ER_AC_END)) {
     853      158082 :         mask           &= ~(ER_AC_ERROR | ER_AC_END);
     854      158082 :         atomic_fetch_add(&s->error_count, start_i - end_i - 1);
     855             :     }
     856      161039 :     if (status & (ER_DC_ERROR | ER_DC_END)) {
     857      158082 :         mask           &= ~(ER_DC_ERROR | ER_DC_END);
     858      158082 :         atomic_fetch_add(&s->error_count, start_i - end_i - 1);
     859             :     }
     860      161039 :     if (status & (ER_MV_ERROR | ER_MV_END)) {
     861      158082 :         mask           &= ~(ER_MV_ERROR | ER_MV_END);
     862      158082 :         atomic_fetch_add(&s->error_count, start_i - end_i - 1);
     863             :     }
     864             : 
     865      161039 :     if (status & ER_MB_ERROR) {
     866          20 :         s->error_occurred = 1;
     867          20 :         atomic_store(&s->error_count, INT_MAX);
     868             :     }
     869             : 
     870      161039 :     if (mask == ~0x7F) {
     871      156354 :         memset(&s->error_status_table[start_xy], 0,
     872      156354 :                (end_xy - start_xy) * sizeof(uint8_t));
     873             :     } else {
     874             :         int i;
     875      414133 :         for (i = start_xy; i < end_xy; i++)
     876      409448 :             s->error_status_table[i] &= mask;
     877             :     }
     878             : 
     879      161039 :     if (end_i == s->mb_num)
     880        3836 :         atomic_store(&s->error_count, INT_MAX);
     881             :     else {
     882      157203 :         s->error_status_table[end_xy] &= mask;
     883      157203 :         s->error_status_table[end_xy] |= status;
     884             :     }
     885             : 
     886      161039 :     s->error_status_table[start_xy] |= VP_START;
     887             : 
     888      288821 :     if (start_xy > 0 && !(s->avctx->active_thread_type & FF_THREAD_SLICE) &&
     889      229911 :         er_supported(s) && s->avctx->skip_top * s->mb_width < start_i) {
     890      102129 :         int prev_status = s->error_status_table[s->mb_index2xy[start_i - 1]];
     891             : 
     892      102129 :         prev_status &= ~ VP_START;
     893      102129 :         if (prev_status != (ER_MV_END | ER_DC_END | ER_AC_END)) {
     894          77 :             s->error_occurred = 1;
     895          77 :             atomic_store(&s->error_count, INT_MAX);
     896             :         }
     897             :     }
     898             : }
     899             : 
     900       29014 : void ff_er_frame_end(ERContext *s)
     901             : {
     902       29014 :     int *linesize = NULL;
     903             :     int i, mb_x, mb_y, error, error_type, dc_error, mv_error, ac_error;
     904             :     int distance;
     905       29014 :     int threshold_part[4] = { 100, 100, 100 };
     906       29014 :     int threshold = 50;
     907             :     int is_intra_likely;
     908       29014 :     int size = s->b8_stride * 2 * s->mb_height;
     909             : 
     910             :     /* We do not support ER of field pictures yet,
     911             :      * though it should not crash if enabled. */
     912       29652 :     if (!s->avctx->error_concealment || !atomic_load(&s->error_count)  ||
     913        1276 :         s->avctx->lowres                                               ||
     914         674 :         !er_supported(s)                                               ||
     915          72 :         atomic_load(&s->error_count) == 3 * s->mb_width *
     916          36 :                           (s->avctx->skip_top + s->avctx->skip_bottom)) {
     917       57956 :         return;
     918             :     }
     919          36 :     linesize = s->cur_pic.f->linesize;
     920         138 :     for (mb_x = 0; mb_x < s->mb_width; mb_x++) {
     921         132 :         int status = s->error_status_table[mb_x + (s->mb_height - 1) * s->mb_stride];
     922         132 :         if (status != 0x7F)
     923          30 :             break;
     924             :     }
     925             : 
     926          36 :     if (   mb_x == s->mb_width
     927           6 :         && s->avctx->codec_id == AV_CODEC_ID_MPEG2VIDEO
     928           0 :         && (FFALIGN(s->avctx->height, 16)&16)
     929           0 :         && atomic_load(&s->error_count) == 3 * s->mb_width * (s->avctx->skip_top + s->avctx->skip_bottom + 1)
     930             :     ) {
     931           0 :         av_log(s->avctx, AV_LOG_DEBUG, "ignoring last missing slice\n");
     932           0 :         return;
     933             :     }
     934             : 
     935          36 :     if (s->last_pic.f) {
     936          62 :         if (s->last_pic.f->width  != s->cur_pic.f->width  ||
     937          62 :             s->last_pic.f->height != s->cur_pic.f->height ||
     938          31 :             s->last_pic.f->format != s->cur_pic.f->format) {
     939           0 :             av_log(s->avctx, AV_LOG_WARNING, "Cannot use previous picture in error concealment\n");
     940           0 :             memset(&s->last_pic, 0, sizeof(s->last_pic));
     941             :         }
     942             :     }
     943          36 :     if (s->next_pic.f) {
     944          58 :         if (s->next_pic.f->width  != s->cur_pic.f->width  ||
     945          58 :             s->next_pic.f->height != s->cur_pic.f->height ||
     946          29 :             s->next_pic.f->format != s->cur_pic.f->format) {
     947           0 :             av_log(s->avctx, AV_LOG_WARNING, "Cannot use next picture in error concealment\n");
     948           0 :             memset(&s->next_pic, 0, sizeof(s->next_pic));
     949             :         }
     950             :     }
     951             : 
     952          36 :     if (!s->cur_pic.motion_val[0] || !s->cur_pic.ref_index[0]) {
     953           0 :         av_log(s->avctx, AV_LOG_ERROR, "Warning MVs not available\n");
     954             : 
     955           0 :         for (i = 0; i < 2; i++) {
     956           0 :             s->ref_index_buf[i]  = av_buffer_allocz(s->mb_stride * s->mb_height * 4 * sizeof(uint8_t));
     957           0 :             s->motion_val_buf[i] = av_buffer_allocz((size + 4) * 2 * sizeof(uint16_t));
     958           0 :             if (!s->ref_index_buf[i] || !s->motion_val_buf[i])
     959             :                 break;
     960           0 :             s->cur_pic.ref_index[i]  = s->ref_index_buf[i]->data;
     961           0 :             s->cur_pic.motion_val[i] = (int16_t (*)[2])s->motion_val_buf[i]->data + 4;
     962             :         }
     963           0 :         if (i < 2) {
     964           0 :             for (i = 0; i < 2; i++) {
     965           0 :                 av_buffer_unref(&s->ref_index_buf[i]);
     966           0 :                 av_buffer_unref(&s->motion_val_buf[i]);
     967           0 :                 s->cur_pic.ref_index[i]  = NULL;
     968           0 :                 s->cur_pic.motion_val[i] = NULL;
     969             :             }
     970           0 :             return;
     971             :         }
     972             :     }
     973             : 
     974          36 :     if (s->avctx->debug & FF_DEBUG_ER) {
     975           0 :         for (mb_y = 0; mb_y < s->mb_height; mb_y++) {
     976           0 :             for (mb_x = 0; mb_x < s->mb_width; mb_x++) {
     977           0 :                 int status = s->error_status_table[mb_x + mb_y * s->mb_stride];
     978             : 
     979           0 :                 av_log(s->avctx, AV_LOG_DEBUG, "%2X ", status);
     980             :             }
     981           0 :             av_log(s->avctx, AV_LOG_DEBUG, "\n");
     982             :         }
     983             :     }
     984             : 
     985             : #if 1
     986             :     /* handle overlapping slices */
     987         144 :     for (error_type = 1; error_type <= 3; error_type++) {
     988         108 :         int end_ok = 0;
     989             : 
     990       36639 :         for (i = s->mb_num - 1; i >= 0; i--) {
     991       36531 :             const int mb_xy = s->mb_index2xy[i];
     992       36531 :             int error       = s->error_status_table[mb_xy];
     993             : 
     994       36531 :             if (error & (1 << error_type))
     995       11025 :                 end_ok = 1;
     996       36531 :             if (error & (8 << error_type))
     997       11382 :                 end_ok = 1;
     998             : 
     999       36531 :             if (!end_ok)
    1000          21 :                 s->error_status_table[mb_xy] |= 1 << error_type;
    1001             : 
    1002       36531 :             if (error & VP_START)
    1003       11433 :                 end_ok = 0;
    1004             :         }
    1005             :     }
    1006             : #endif
    1007             : #if 1
    1008             :     /* handle slices with partitions of different length */
    1009          36 :     if (s->partitioned_frame) {
    1010          29 :         int end_ok = 0;
    1011             : 
    1012       11513 :         for (i = s->mb_num - 1; i >= 0; i--) {
    1013       11484 :             const int mb_xy = s->mb_index2xy[i];
    1014       11484 :             int error       = s->error_status_table[mb_xy];
    1015             : 
    1016       11484 :             if (error & ER_AC_END)
    1017        3312 :                 end_ok = 0;
    1018       19656 :             if ((error & ER_MV_END) ||
    1019       16344 :                 (error & ER_DC_END) ||
    1020        8172 :                 (error & ER_AC_ERROR))
    1021        3312 :                 end_ok = 1;
    1022             : 
    1023       11484 :             if (!end_ok)
    1024           0 :                 s->error_status_table[mb_xy]|= ER_AC_ERROR;
    1025             : 
    1026       11484 :             if (error & VP_START)
    1027        3312 :                 end_ok = 0;
    1028             :         }
    1029             :     }
    1030             : #endif
    1031             :     /* handle missing slices */
    1032          36 :     if (s->avctx->err_recognition & AV_EF_EXPLODE) {
    1033           0 :         int end_ok = 1;
    1034             : 
    1035             :         // FIXME + 100 hack
    1036           0 :         for (i = s->mb_num - 2; i >= s->mb_width + 100; i--) {
    1037           0 :             const int mb_xy = s->mb_index2xy[i];
    1038           0 :             int error1 = s->error_status_table[mb_xy];
    1039           0 :             int error2 = s->error_status_table[s->mb_index2xy[i + 1]];
    1040             : 
    1041           0 :             if (error1 & VP_START)
    1042           0 :                 end_ok = 1;
    1043             : 
    1044           0 :             if (error2 == (VP_START | ER_MB_ERROR | ER_MB_END) &&
    1045           0 :                 error1 != (VP_START | ER_MB_ERROR | ER_MB_END) &&
    1046           0 :                 ((error1 & ER_AC_END) || (error1 & ER_DC_END) ||
    1047           0 :                 (error1 & ER_MV_END))) {
    1048             :                 // end & uninit
    1049           0 :                 end_ok = 0;
    1050             :             }
    1051             : 
    1052           0 :             if (!end_ok)
    1053           0 :                 s->error_status_table[mb_xy] |= ER_MB_ERROR;
    1054             :         }
    1055             :     }
    1056             : 
    1057             : #if 1
    1058             :     /* backward mark errors */
    1059          36 :     distance = 9999999;
    1060         144 :     for (error_type = 1; error_type <= 3; error_type++) {
    1061       36639 :         for (i = s->mb_num - 1; i >= 0; i--) {
    1062       36531 :             const int mb_xy = s->mb_index2xy[i];
    1063       36531 :             int       error = s->error_status_table[mb_xy];
    1064             : 
    1065       36531 :             if (!s->mbskip_table || !s->mbskip_table[mb_xy]) // FIXME partition specific
    1066       36453 :                 distance++;
    1067       36531 :             if (error & (1 << error_type))
    1068       11046 :                 distance = 0;
    1069             : 
    1070       36531 :             if (s->partitioned_frame) {
    1071       34452 :                 if (distance < threshold_part[error_type - 1])
    1072        9546 :                     s->error_status_table[mb_xy] |= 1 << error_type;
    1073             :             } else {
    1074        2079 :                 if (distance < threshold)
    1075        2007 :                     s->error_status_table[mb_xy] |= 1 << error_type;
    1076             :             }
    1077             : 
    1078       36531 :             if (error & VP_START)
    1079       11433 :                 distance = 9999999;
    1080             :         }
    1081             :     }
    1082             : #endif
    1083             : 
    1084             :     /* forward mark errors */
    1085          36 :     error = 0;
    1086       12213 :     for (i = 0; i < s->mb_num; i++) {
    1087       12177 :         const int mb_xy = s->mb_index2xy[i];
    1088       12177 :         int old_error   = s->error_status_table[mb_xy];
    1089             : 
    1090       12177 :         if (old_error & VP_START) {
    1091        3811 :             error = old_error & ER_MB_ERROR;
    1092             :         } else {
    1093        8366 :             error |= old_error & ER_MB_ERROR;
    1094        8366 :             s->error_status_table[mb_xy] |= error;
    1095             :         }
    1096             :     }
    1097             : #if 1
    1098             :     /* handle not partitioned case */
    1099          36 :     if (!s->partitioned_frame) {
    1100         700 :         for (i = 0; i < s->mb_num; i++) {
    1101         693 :             const int mb_xy = s->mb_index2xy[i];
    1102         693 :             int error = s->error_status_table[mb_xy];
    1103         693 :             if (error & ER_MB_ERROR)
    1104         693 :                 error |= ER_MB_ERROR;
    1105         693 :             s->error_status_table[mb_xy] = error;
    1106             :         }
    1107             :     }
    1108             : #endif
    1109             : 
    1110          36 :     dc_error = ac_error = mv_error = 0;
    1111       12213 :     for (i = 0; i < s->mb_num; i++) {
    1112       12177 :         const int mb_xy = s->mb_index2xy[i];
    1113       12177 :         int error = s->error_status_table[mb_xy];
    1114       12177 :         if (error & ER_DC_ERROR)
    1115        3875 :             dc_error++;
    1116       12177 :         if (error & ER_AC_ERROR)
    1117        3875 :             ac_error++;
    1118       12177 :         if (error & ER_MV_ERROR)
    1119        3875 :             mv_error++;
    1120             :     }
    1121          36 :     av_log(s->avctx, AV_LOG_INFO, "concealing %d DC, %d AC, %d MV errors in %c frame\n",
    1122          36 :            dc_error, ac_error, mv_error, av_get_picture_type_char(s->cur_pic.f->pict_type));
    1123             : 
    1124          36 :     is_intra_likely = is_intra_more_likely(s);
    1125             : 
    1126             :     /* set unknown mb-type to most likely */
    1127       12213 :     for (i = 0; i < s->mb_num; i++) {
    1128       12177 :         const int mb_xy = s->mb_index2xy[i];
    1129       12177 :         int error = s->error_status_table[mb_xy];
    1130       12177 :         if (!((error & ER_DC_ERROR) && (error & ER_MV_ERROR)))
    1131        8302 :             continue;
    1132             : 
    1133        3875 :         if (is_intra_likely)
    1134         354 :             s->cur_pic.mb_type[mb_xy] = MB_TYPE_INTRA4x4;
    1135             :         else
    1136        3521 :             s->cur_pic.mb_type[mb_xy] = MB_TYPE_16x16 | MB_TYPE_L0;
    1137             :     }
    1138             : 
    1139             :     // change inter to intra blocks if no reference frames are available
    1140          41 :     if (!(s->last_pic.f && s->last_pic.f->data[0]) &&
    1141           8 :         !(s->next_pic.f && s->next_pic.f->data[0]))
    1142         200 :         for (i = 0; i < s->mb_num; i++) {
    1143         198 :             const int mb_xy = s->mb_index2xy[i];
    1144         198 :             if (!IS_INTRA(s->cur_pic.mb_type[mb_xy]))
    1145           0 :                 s->cur_pic.mb_type[mb_xy] = MB_TYPE_INTRA4x4;
    1146             :         }
    1147             : 
    1148             :     /* handle inter blocks with damaged AC */
    1149         621 :     for (mb_y = 0; mb_y < s->mb_height; mb_y++) {
    1150       12762 :         for (mb_x = 0; mb_x < s->mb_width; mb_x++) {
    1151       12177 :             const int mb_xy   = mb_x + mb_y * s->mb_stride;
    1152       12177 :             const int mb_type = s->cur_pic.mb_type[mb_xy];
    1153       12177 :             const int dir     = !(s->last_pic.f && s->last_pic.f->data[0]);
    1154       12177 :             const int mv_dir  = dir ? MV_DIR_BACKWARD : MV_DIR_FORWARD;
    1155             :             int mv_type;
    1156             : 
    1157       12177 :             int error = s->error_status_table[mb_xy];
    1158             : 
    1159       12177 :             if (IS_INTRA(mb_type))
    1160        4053 :                 continue; // intra
    1161        8124 :             if (error & ER_MV_ERROR)
    1162        3521 :                 continue; // inter with damaged MV
    1163        4603 :             if (!(error & ER_AC_ERROR))
    1164        4603 :                 continue; // undamaged inter
    1165             : 
    1166           0 :             if (IS_8X8(mb_type)) {
    1167           0 :                 int mb_index = mb_x * 2 + mb_y * 2 * s->b8_stride;
    1168             :                 int j;
    1169           0 :                 mv_type = MV_TYPE_8X8;
    1170           0 :                 for (j = 0; j < 4; j++) {
    1171           0 :                     s->mv[0][j][0] = s->cur_pic.motion_val[dir][mb_index + (j & 1) + (j >> 1) * s->b8_stride][0];
    1172           0 :                     s->mv[0][j][1] = s->cur_pic.motion_val[dir][mb_index + (j & 1) + (j >> 1) * s->b8_stride][1];
    1173             :                 }
    1174             :             } else {
    1175           0 :                 mv_type     = MV_TYPE_16X16;
    1176           0 :                 s->mv[0][0][0] = s->cur_pic.motion_val[dir][mb_x * 2 + mb_y * 2 * s->b8_stride][0];
    1177           0 :                 s->mv[0][0][1] = s->cur_pic.motion_val[dir][mb_x * 2 + mb_y * 2 * s->b8_stride][1];
    1178             :             }
    1179             : 
    1180           0 :             s->decode_mb(s->opaque, 0 /* FIXME H.264 partitioned slices need this set */,
    1181             :                          mv_dir, mv_type, &s->mv, mb_x, mb_y, 0, 0);
    1182             :         }
    1183             :     }
    1184             : 
    1185             :     /* guess MVs */
    1186          36 :     if (s->cur_pic.f->pict_type == AV_PICTURE_TYPE_B) {
    1187           0 :         for (mb_y = 0; mb_y < s->mb_height; mb_y++) {
    1188           0 :             for (mb_x = 0; mb_x < s->mb_width; mb_x++) {
    1189           0 :                 int       xy      = mb_x * 2 + mb_y * 2 * s->b8_stride;
    1190           0 :                 const int mb_xy   = mb_x + mb_y * s->mb_stride;
    1191           0 :                 const int mb_type = s->cur_pic.mb_type[mb_xy];
    1192           0 :                 int mv_dir = MV_DIR_FORWARD | MV_DIR_BACKWARD;
    1193             : 
    1194           0 :                 int error = s->error_status_table[mb_xy];
    1195             : 
    1196           0 :                 if (IS_INTRA(mb_type))
    1197           0 :                     continue;
    1198           0 :                 if (!(error & ER_MV_ERROR))
    1199           0 :                     continue; // inter with undamaged MV
    1200           0 :                 if (!(error & ER_AC_ERROR))
    1201           0 :                     continue; // undamaged inter
    1202             : 
    1203           0 :                 if (!(s->last_pic.f && s->last_pic.f->data[0]))
    1204           0 :                     mv_dir &= ~MV_DIR_FORWARD;
    1205           0 :                 if (!(s->next_pic.f && s->next_pic.f->data[0]))
    1206           0 :                     mv_dir &= ~MV_DIR_BACKWARD;
    1207             : 
    1208           0 :                 if (s->pp_time) {
    1209           0 :                     int time_pp = s->pp_time;
    1210           0 :                     int time_pb = s->pb_time;
    1211             : 
    1212           0 :                     av_assert0(s->avctx->codec_id != AV_CODEC_ID_H264);
    1213           0 :                     ff_thread_await_progress(s->next_pic.tf, mb_y, 0);
    1214             : 
    1215           0 :                     s->mv[0][0][0] = s->next_pic.motion_val[0][xy][0] *  time_pb            / time_pp;
    1216           0 :                     s->mv[0][0][1] = s->next_pic.motion_val[0][xy][1] *  time_pb            / time_pp;
    1217           0 :                     s->mv[1][0][0] = s->next_pic.motion_val[0][xy][0] * (time_pb - time_pp) / time_pp;
    1218           0 :                     s->mv[1][0][1] = s->next_pic.motion_val[0][xy][1] * (time_pb - time_pp) / time_pp;
    1219             :                 } else {
    1220           0 :                     s->mv[0][0][0] = 0;
    1221           0 :                     s->mv[0][0][1] = 0;
    1222           0 :                     s->mv[1][0][0] = 0;
    1223           0 :                     s->mv[1][0][1] = 0;
    1224             :                 }
    1225             : 
    1226           0 :                 s->decode_mb(s->opaque, 0, mv_dir, MV_TYPE_16X16, &s->mv,
    1227             :                              mb_x, mb_y, 0, 0);
    1228             :             }
    1229             :         }
    1230             :     } else
    1231          36 :         guess_mv(s);
    1232             : 
    1233             :     /* the filters below manipulate raw image, skip them */
    1234             :     if (CONFIG_XVMC && s->avctx->hwaccel && s->avctx->hwaccel->decode_mb)
    1235             :         goto ec_clean;
    1236             :     /* fill DC for inter blocks */
    1237         621 :     for (mb_y = 0; mb_y < s->mb_height; mb_y++) {
    1238       12762 :         for (mb_x = 0; mb_x < s->mb_width; mb_x++) {
    1239             :             int dc, dcu, dcv, y, n;
    1240             :             int16_t *dc_ptr;
    1241             :             uint8_t *dest_y, *dest_cb, *dest_cr;
    1242       12177 :             const int mb_xy   = mb_x + mb_y * s->mb_stride;
    1243       12177 :             const int mb_type = s->cur_pic.mb_type[mb_xy];
    1244             : 
    1245             :             // error = s->error_status_table[mb_xy];
    1246             : 
    1247       12177 :             if (IS_INTRA(mb_type) && s->partitioned_frame)
    1248        3855 :                 continue;
    1249             :             // if (error & ER_MV_ERROR)
    1250             :             //     continue; // inter data damaged FIXME is this good?
    1251             : 
    1252        8322 :             dest_y  = s->cur_pic.f->data[0] + mb_x * 16 + mb_y * 16 * linesize[0];
    1253        8322 :             dest_cb = s->cur_pic.f->data[1] + mb_x *  8 + mb_y *  8 * linesize[1];
    1254        8322 :             dest_cr = s->cur_pic.f->data[2] + mb_x *  8 + mb_y *  8 * linesize[2];
    1255             : 
    1256        8322 :             dc_ptr = &s->dc_val[0][mb_x * 2 + mb_y * 2 * s->b8_stride];
    1257       41610 :             for (n = 0; n < 4; n++) {
    1258       33288 :                 dc = 0;
    1259      299592 :                 for (y = 0; y < 8; y++) {
    1260             :                     int x;
    1261     2396736 :                     for (x = 0; x < 8; x++)
    1262     4260864 :                        dc += dest_y[x + (n & 1) * 8 +
    1263     2130432 :                              (y + (n >> 1) * 8) * linesize[0]];
    1264             :                 }
    1265       33288 :                 dc_ptr[(n & 1) + (n >> 1) * s->b8_stride] = (dc + 4) >> 3;
    1266             :             }
    1267             : 
    1268        8322 :             if (!s->cur_pic.f->data[2])
    1269           0 :                 continue;
    1270             : 
    1271        8322 :             dcu = dcv = 0;
    1272       74898 :             for (y = 0; y < 8; y++) {
    1273             :                 int x;
    1274      599184 :                 for (x = 0; x < 8; x++) {
    1275      532608 :                     dcu += dest_cb[x + y * linesize[1]];
    1276      532608 :                     dcv += dest_cr[x + y * linesize[2]];
    1277             :                 }
    1278             :             }
    1279        8322 :             s->dc_val[1][mb_x + mb_y * s->mb_stride] = (dcu + 4) >> 3;
    1280        8322 :             s->dc_val[2][mb_x + mb_y * s->mb_stride] = (dcv + 4) >> 3;
    1281             :         }
    1282             :     }
    1283             : #if 1
    1284             :     /* guess DC for damaged blocks */
    1285          36 :     guess_dc(s, s->dc_val[0], s->mb_width*2, s->mb_height*2, s->b8_stride, 1);
    1286          36 :     guess_dc(s, s->dc_val[1], s->mb_width  , s->mb_height  , s->mb_stride, 0);
    1287          36 :     guess_dc(s, s->dc_val[2], s->mb_width  , s->mb_height  , s->mb_stride, 0);
    1288             : #endif
    1289             : 
    1290             :     /* filter luma DC */
    1291          36 :     filter181(s->dc_val[0], s->mb_width * 2, s->mb_height * 2, s->b8_stride);
    1292             : 
    1293             : #if 1
    1294             :     /* render DC only intra */
    1295         621 :     for (mb_y = 0; mb_y < s->mb_height; mb_y++) {
    1296       12762 :         for (mb_x = 0; mb_x < s->mb_width; mb_x++) {
    1297             :             uint8_t *dest_y, *dest_cb, *dest_cr;
    1298       12177 :             const int mb_xy   = mb_x + mb_y * s->mb_stride;
    1299       12177 :             const int mb_type = s->cur_pic.mb_type[mb_xy];
    1300             : 
    1301       12177 :             int error = s->error_status_table[mb_xy];
    1302             : 
    1303       12177 :             if (IS_INTER(mb_type))
    1304        8124 :                 continue;
    1305        4053 :             if (!(error & ER_AC_ERROR))
    1306        3699 :                 continue; // undamaged
    1307             : 
    1308         354 :             dest_y  = s->cur_pic.f->data[0] + mb_x * 16 + mb_y * 16 * linesize[0];
    1309         354 :             dest_cb = s->cur_pic.f->data[1] + mb_x *  8 + mb_y *  8 * linesize[1];
    1310         354 :             dest_cr = s->cur_pic.f->data[2] + mb_x *  8 + mb_y *  8 * linesize[2];
    1311         354 :             if (!s->cur_pic.f->data[2])
    1312           0 :                 dest_cb = dest_cr = NULL;
    1313             : 
    1314         354 :             put_dc(s, dest_y, dest_cb, dest_cr, mb_x, mb_y);
    1315             :         }
    1316             :     }
    1317             : #endif
    1318             : 
    1319          36 :     if (s->avctx->error_concealment & FF_EC_DEBLOCK) {
    1320             :         /* filter horizontal block boundaries */
    1321          72 :         h_block_filter(s, s->cur_pic.f->data[0], s->mb_width * 2,
    1322          72 :                        s->mb_height * 2, linesize[0], 1);
    1323             : 
    1324             :         /* filter vertical block boundaries */
    1325          72 :         v_block_filter(s, s->cur_pic.f->data[0], s->mb_width * 2,
    1326          72 :                        s->mb_height * 2, linesize[0], 1);
    1327             : 
    1328          36 :         if (s->cur_pic.f->data[2]) {
    1329          36 :             h_block_filter(s, s->cur_pic.f->data[1], s->mb_width,
    1330          36 :                         s->mb_height, linesize[1], 0);
    1331          36 :             h_block_filter(s, s->cur_pic.f->data[2], s->mb_width,
    1332          36 :                         s->mb_height, linesize[2], 0);
    1333          36 :             v_block_filter(s, s->cur_pic.f->data[1], s->mb_width,
    1334          36 :                         s->mb_height, linesize[1], 0);
    1335          36 :             v_block_filter(s, s->cur_pic.f->data[2], s->mb_width,
    1336          36 :                         s->mb_height, linesize[2], 0);
    1337             :         }
    1338             :     }
    1339             : 
    1340          36 : ec_clean:
    1341             :     /* clean a few tables */
    1342       12213 :     for (i = 0; i < s->mb_num; i++) {
    1343       12177 :         const int mb_xy = s->mb_index2xy[i];
    1344       12177 :         int       error = s->error_status_table[mb_xy];
    1345             : 
    1346       23661 :         if (s->mbskip_table && s->cur_pic.f->pict_type != AV_PICTURE_TYPE_B &&
    1347       11484 :             (error & (ER_DC_ERROR | ER_MV_ERROR | ER_AC_ERROR))) {
    1348        3182 :             s->mbskip_table[mb_xy] = 0;
    1349             :         }
    1350       12177 :         if (s->mbintra_table)
    1351       11484 :             s->mbintra_table[mb_xy] = 1;
    1352             :     }
    1353             : 
    1354         108 :     for (i = 0; i < 2; i++) {
    1355          72 :         av_buffer_unref(&s->ref_index_buf[i]);
    1356          72 :         av_buffer_unref(&s->motion_val_buf[i]);
    1357          72 :         s->cur_pic.ref_index[i]  = NULL;
    1358          72 :         s->cur_pic.motion_val[i] = NULL;
    1359             :     }
    1360             : 
    1361          36 :     memset(&s->cur_pic, 0, sizeof(ERPicture));
    1362          36 :     memset(&s->last_pic, 0, sizeof(ERPicture));
    1363          36 :     memset(&s->next_pic, 0, sizeof(ERPicture));
    1364             : }

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