LCOV - code coverage report
Current view: top level - libavcodec - error_resilience.c (source / functions) Hit Total Coverage
Test: coverage.info Lines: 729 832 87.6 %
Date: 2018-05-20 11:54:08 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         259 : static void set_mv_strides(ERContext *s, ptrdiff_t *mv_step, ptrdiff_t *stride)
      45             : {
      46         259 :     if (s->avctx->codec_id == AV_CODEC_ID_H264) {
      47          56 :         av_assert0(s->quarter_sample);
      48          56 :         *mv_step = 4;
      49          56 :         *stride  = s->mb_width * 4;
      50             :     } else {
      51         203 :         *mv_step = 2;
      52         203 :         *stride  = s->b8_stride;
      53             :     }
      54         259 : }
      55             : 
      56             : /**
      57             :  * Replace the current MB with a flat dc-only version.
      58             :  */
      59         453 : 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         453 :     int *linesize = s->cur_pic.f->linesize;
      63             :     int dc, dcu, dcv, y, i;
      64        2265 :     for (i = 0; i < 4; i++) {
      65        1812 :         dc = s->dc_val[0][mb_x * 2 + (i &  1) + (mb_y * 2 + (i >> 1)) * s->b8_stride];
      66        1812 :         if (dc < 0)
      67          17 :             dc = 0;
      68        1795 :         else if (dc > 2040)
      69           8 :             dc = 2040;
      70       16308 :         for (y = 0; y < 8; y++) {
      71             :             int x;
      72      130464 :             for (x = 0; x < 8; x++)
      73      115968 :                 dest_y[x + (i &  1) * 8 + (y + (i >> 1) * 8) * linesize[0]] = dc / 8;
      74             :         }
      75             :     }
      76         453 :     dcu = s->dc_val[1][mb_x + mb_y * s->mb_stride];
      77         453 :     dcv = s->dc_val[2][mb_x + mb_y * s->mb_stride];
      78         453 :     if (dcu < 0)
      79           0 :         dcu = 0;
      80         453 :     else if (dcu > 2040)
      81           0 :         dcu = 2040;
      82         453 :     if (dcv < 0)
      83           0 :         dcv = 0;
      84         453 :     else if (dcv > 2040)
      85           0 :         dcv = 2040;
      86             : 
      87         453 :     if (dest_cr)
      88        4077 :     for (y = 0; y < 8; y++) {
      89             :         int x;
      90       32616 :         for (x = 0; x < 8; x++) {
      91       28992 :             dest_cb[x + y * linesize[1]] = dcu / 8;
      92       28992 :             dest_cr[x + y * linesize[2]] = dcv / 8;
      93             :         }
      94             :     }
      95         453 : }
      96             : 
      97          37 : static void filter181(int16_t *data, int width, int height, ptrdiff_t stride)
      98             : {
      99             :     int x, y;
     100             : 
     101             :     /* horizontal filter */
     102        1163 :     for (y = 1; y < height - 1; y++) {
     103        1126 :         int prev_dc = data[0 + y * stride];
     104             : 
     105       45842 :         for (x = 1; x < width - 1; x++) {
     106             :             int dc;
     107       89432 :             dc = -prev_dc +
     108       44716 :                  data[x     + y * stride] * 8 -
     109       44716 :                  data[x + 1 + y * stride];
     110       44716 :             dc = (av_clip(dc, INT_MIN/10923, INT_MAX/10923 - 32768) * 10923 + 32768) >> 16;
     111       44716 :             prev_dc = data[x + y * stride];
     112       44716 :             data[x + y * stride] = dc;
     113             :         }
     114             :     }
     115             : 
     116             :     /* vertical filter */
     117        1433 :     for (x = 1; x < width - 1; x++) {
     118        1396 :         int prev_dc = data[x];
     119             : 
     120       46112 :         for (y = 1; y < height - 1; y++) {
     121             :             int dc;
     122             : 
     123       89432 :             dc = -prev_dc +
     124       44716 :                  data[x +  y      * stride] * 8 -
     125       44716 :                  data[x + (y + 1) * stride];
     126       44716 :             dc = (av_clip(dc, INT_MIN/10923, INT_MAX/10923 - 32768) * 10923 + 32768) >> 16;
     127       44716 :             prev_dc = data[x + y * stride];
     128       44716 :             data[x + y * stride] = dc;
     129             :         }
     130             :     }
     131          37 : }
     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         111 : 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         111 :     int16_t  (*col )[4] = av_malloc_array(stride, h*sizeof( int16_t)*4);
     143         111 :     uint32_t (*dist)[4] = av_malloc_array(stride, h*sizeof(uint32_t)*4);
     144             : 
     145         111 :     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        2511 :     for(b_y=0; b_y<h; b_y++){
     151        2400 :         int color= 1024;
     152        2400 :         int distance= -1;
     153       77262 :         for(b_x=0; b_x<w; b_x++){
     154       74862 :             int mb_index_j= (b_x>>is_luma) + (b_y>>is_luma)*s->mb_stride;
     155       74862 :             int error_j= s->error_status_table[mb_index_j];
     156       74862 :             int intra_j = IS_INTRA(s->cur_pic.mb_type[mb_index_j]);
     157       74862 :             if(intra_j==0 || !(error_j&ER_DC_ERROR)){
     158       72144 :                 color= dc[b_x + b_y*stride];
     159       72144 :                 distance= b_x;
     160             :             }
     161       74862 :             col [b_x + b_y*stride][1]= color;
     162       74862 :             dist[b_x + b_y*stride][1]= distance >= 0 ? b_x-distance : 9999;
     163             :         }
     164        2400 :         color= 1024;
     165        2400 :         distance= -1;
     166       77262 :         for(b_x=w-1; b_x>=0; b_x--){
     167       74862 :             int mb_index_j= (b_x>>is_luma) + (b_y>>is_luma)*s->mb_stride;
     168       74862 :             int error_j= s->error_status_table[mb_index_j];
     169       74862 :             int intra_j = IS_INTRA(s->cur_pic.mb_type[mb_index_j]);
     170       74862 :             if(intra_j==0 || !(error_j&ER_DC_ERROR)){
     171       72144 :                 color= dc[b_x + b_y*stride];
     172       72144 :                 distance= b_x;
     173             :             }
     174       74862 :             col [b_x + b_y*stride][0]= color;
     175       74862 :             dist[b_x + b_y*stride][0]= distance >= 0 ? distance-b_x : 9999;
     176             :         }
     177             :     }
     178        3051 :     for(b_x=0; b_x<w; b_x++){
     179        2940 :         int color= 1024;
     180        2940 :         int distance= -1;
     181       77802 :         for(b_y=0; b_y<h; b_y++){
     182       74862 :             int mb_index_j= (b_x>>is_luma) + (b_y>>is_luma)*s->mb_stride;
     183       74862 :             int error_j= s->error_status_table[mb_index_j];
     184       74862 :             int intra_j = IS_INTRA(s->cur_pic.mb_type[mb_index_j]);
     185       74862 :             if(intra_j==0 || !(error_j&ER_DC_ERROR)){
     186       72144 :                 color= dc[b_x + b_y*stride];
     187       72144 :                 distance= b_y;
     188             :             }
     189       74862 :             col [b_x + b_y*stride][3]= color;
     190       74862 :             dist[b_x + b_y*stride][3]= distance >= 0 ? b_y-distance : 9999;
     191             :         }
     192        2940 :         color= 1024;
     193        2940 :         distance= -1;
     194       77802 :         for(b_y=h-1; b_y>=0; b_y--){
     195       74862 :             int mb_index_j= (b_x>>is_luma) + (b_y>>is_luma)*s->mb_stride;
     196       74862 :             int error_j= s->error_status_table[mb_index_j];
     197       74862 :             int intra_j = IS_INTRA(s->cur_pic.mb_type[mb_index_j]);
     198       74862 :             if(intra_j==0 || !(error_j&ER_DC_ERROR)){
     199       72144 :                 color= dc[b_x + b_y*stride];
     200       72144 :                 distance= b_y;
     201             :             }
     202       74862 :             col [b_x + b_y*stride][2]= color;
     203       74862 :             dist[b_x + b_y*stride][2]= distance >= 0 ? distance-b_y : 9999;
     204             :         }
     205             :     }
     206             : 
     207        2511 :     for (b_y = 0; b_y < h; b_y++) {
     208       77262 :         for (b_x = 0; b_x < w; b_x++) {
     209             :             int mb_index, error, j;
     210             :             int64_t guess, weight_sum;
     211       74862 :             mb_index = (b_x >> is_luma) + (b_y >> is_luma) * s->mb_stride;
     212       74862 :             error    = s->error_status_table[mb_index];
     213             : 
     214       74862 :             if (IS_INTER(s->cur_pic.mb_type[mb_index]))
     215       48744 :                 continue; // inter
     216       26118 :             if (!(error & ER_DC_ERROR))
     217       23400 :                 continue; // dc-ok
     218             : 
     219        2718 :             weight_sum = 0;
     220        2718 :             guess      = 0;
     221       13590 :             for (j = 0; j < 4; j++) {
     222       10872 :                 int64_t weight  = 256 * 256 * 256 * 16 / FFMAX(dist[b_x + b_y*stride][j], 1);
     223       10872 :                 guess          += weight*(int64_t)col[b_x + b_y*stride][j];
     224       10872 :                 weight_sum     += weight;
     225             :             }
     226        2718 :             guess = (guess + weight_sum / 2) / weight_sum;
     227        2718 :             dc[b_x + b_y * stride] = guess;
     228             :         }
     229             :     }
     230             : 
     231         111 : fail:
     232         111 :     av_freep(&col);
     233         111 :     av_freep(&dist);
     234         111 : }
     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         111 : 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         111 :     const uint8_t *cm = ff_crop_tab + MAX_NEG_CROP;
     247         111 :     set_mv_strides(s, &mvx_stride, &mvy_stride);
     248         111 :     mvx_stride >>= is_luma;
     249         111 :     mvy_stride *= mvx_stride;
     250             : 
     251        2511 :     for (b_y = 0; b_y < h; b_y++) {
     252       74862 :         for (b_x = 0; b_x < w - 1; b_x++) {
     253             :             int y;
     254       72462 :             int left_status  = s->error_status_table[( b_x      >> is_luma) + (b_y >> is_luma) * s->mb_stride];
     255       72462 :             int right_status = s->error_status_table[((b_x + 1) >> is_luma) + (b_y >> is_luma) * s->mb_stride];
     256       72462 :             int left_intra   = IS_INTRA(s->cur_pic.mb_type[( b_x      >> is_luma) + (b_y >> is_luma) * s->mb_stride]);
     257       72462 :             int right_intra  = IS_INTRA(s->cur_pic.mb_type[((b_x + 1) >> is_luma) + (b_y >> is_luma) * s->mb_stride]);
     258       72462 :             int left_damage  = left_status & ER_MB_ERROR;
     259       72462 :             int right_damage = right_status & ER_MB_ERROR;
     260       72462 :             int offset       = b_x * 8 + b_y * stride * 8;
     261       72462 :             int16_t *left_mv  = s->cur_pic.motion_val[0][mvy_stride * b_y + mvx_stride *  b_x];
     262       72462 :             int16_t *right_mv = s->cur_pic.motion_val[0][mvy_stride * b_y + mvx_stride * (b_x + 1)];
     263       72462 :             if (!(left_damage || right_damage))
     264       49350 :                 continue; // both undamaged
     265       43566 :             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      166671 :             for (y = 0; y < 8; y++) {
     271             :                 int a, b, c, d;
     272             : 
     273      148152 :                 a = dst[offset + 7 + y * stride] - dst[offset + 6 + y * stride];
     274      148152 :                 b = dst[offset + 8 + y * stride] - dst[offset + 7 + y * stride];
     275      148152 :                 c = dst[offset + 9 + y * stride] - dst[offset + 8 + y * stride];
     276             : 
     277      148152 :                 d = FFABS(b) - ((FFABS(a) + FFABS(c) + 1) >> 1);
     278      148152 :                 d = FFMAX(d, 0);
     279      148152 :                 if (b < 0)
     280       48880 :                     d = -d;
     281             : 
     282      148152 :                 if (d == 0)
     283       97923 :                     continue;
     284             : 
     285       50229 :                 if (!(left_damage && right_damage))
     286         841 :                     d = d * 16 / 9;
     287             : 
     288       50229 :                 if (left_damage) {
     289       49860 :                     dst[offset + 7 + y * stride] = cm[dst[offset + 7 + y * stride] + ((d * 7) >> 4)];
     290       49860 :                     dst[offset + 6 + y * stride] = cm[dst[offset + 6 + y * stride] + ((d * 5) >> 4)];
     291       49860 :                     dst[offset + 5 + y * stride] = cm[dst[offset + 5 + y * stride] + ((d * 3) >> 4)];
     292       49860 :                     dst[offset + 4 + y * stride] = cm[dst[offset + 4 + y * stride] + ((d * 1) >> 4)];
     293             :                 }
     294       50229 :                 if (right_damage) {
     295       49757 :                     dst[offset + 8 + y * stride] = cm[dst[offset +  8 + y * stride] - ((d * 7) >> 4)];
     296       49757 :                     dst[offset + 9 + y * stride] = cm[dst[offset +  9 + y * stride] - ((d * 5) >> 4)];
     297       49757 :                     dst[offset + 10+ y * stride] = cm[dst[offset + 10 + y * stride] - ((d * 3) >> 4)];
     298       49757 :                     dst[offset + 11+ y * stride] = cm[dst[offset + 11 + y * stride] - ((d * 1) >> 4)];
     299             :                 }
     300             :             }
     301             :         }
     302             :     }
     303         111 : }
     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         111 : 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         111 :     const uint8_t *cm = ff_crop_tab + MAX_NEG_CROP;
     316         111 :     set_mv_strides(s, &mvx_stride, &mvy_stride);
     317         111 :     mvx_stride >>= is_luma;
     318         111 :     mvy_stride *= mvx_stride;
     319             : 
     320        2400 :     for (b_y = 0; b_y < h - 1; b_y++) {
     321       74211 :         for (b_x = 0; b_x < w; b_x++) {
     322             :             int x;
     323       71922 :             int top_status    = s->error_status_table[(b_x >> is_luma) +  (b_y      >> is_luma) * s->mb_stride];
     324       71922 :             int bottom_status = s->error_status_table[(b_x >> is_luma) + ((b_y + 1) >> is_luma) * s->mb_stride];
     325       71922 :             int top_intra     = IS_INTRA(s->cur_pic.mb_type[(b_x >> is_luma) + ( b_y      >> is_luma) * s->mb_stride]);
     326       71922 :             int bottom_intra  = IS_INTRA(s->cur_pic.mb_type[(b_x >> is_luma) + ((b_y + 1) >> is_luma) * s->mb_stride]);
     327       71922 :             int top_damage    = top_status & ER_MB_ERROR;
     328       71922 :             int bottom_damage = bottom_status & ER_MB_ERROR;
     329       71922 :             int offset        = b_x * 8 + b_y * stride * 8;
     330             : 
     331       71922 :             int16_t *top_mv    = s->cur_pic.motion_val[0][mvy_stride *  b_y      + mvx_stride * b_x];
     332       71922 :             int16_t *bottom_mv = s->cur_pic.motion_val[0][mvy_stride * (b_y + 1) + mvx_stride * b_x];
     333             : 
     334       71922 :             if (!(top_damage || bottom_damage))
     335       45970 :                 continue; // both undamaged
     336             : 
     337       47570 :             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      191880 :             for (x = 0; x < 8; x++) {
     343             :                 int a, b, c, d;
     344             : 
     345      170560 :                 a = dst[offset + x + 7 * stride] - dst[offset + x + 6 * stride];
     346      170560 :                 b = dst[offset + x + 8 * stride] - dst[offset + x + 7 * stride];
     347      170560 :                 c = dst[offset + x + 9 * stride] - dst[offset + x + 8 * stride];
     348             : 
     349      170560 :                 d = FFABS(b) - ((FFABS(a) + FFABS(c) + 1) >> 1);
     350      170560 :                 d = FFMAX(d, 0);
     351      170560 :                 if (b < 0)
     352       61844 :                     d = -d;
     353             : 
     354      170560 :                 if (d == 0)
     355      106914 :                     continue;
     356             : 
     357       63646 :                 if (!(top_damage && bottom_damage))
     358       18705 :                     d = d * 16 / 9;
     359             : 
     360       63646 :                 if (top_damage) {
     361       54076 :                     dst[offset + x +  7 * stride] = cm[dst[offset + x +  7 * stride] + ((d * 7) >> 4)];
     362       54076 :                     dst[offset + x +  6 * stride] = cm[dst[offset + x +  6 * stride] + ((d * 5) >> 4)];
     363       54076 :                     dst[offset + x +  5 * stride] = cm[dst[offset + x +  5 * stride] + ((d * 3) >> 4)];
     364       54076 :                     dst[offset + x +  4 * stride] = cm[dst[offset + x +  4 * stride] + ((d * 1) >> 4)];
     365             :                 }
     366       63646 :                 if (bottom_damage) {
     367       54511 :                     dst[offset + x +  8 * stride] = cm[dst[offset + x +  8 * stride] - ((d * 7) >> 4)];
     368       54511 :                     dst[offset + x +  9 * stride] = cm[dst[offset + x +  9 * stride] - ((d * 5) >> 4)];
     369       54511 :                     dst[offset + x + 10 * stride] = cm[dst[offset + x + 10 * stride] - ((d * 3) >> 4)];
     370       54511 :                     dst[offset + x + 11 * stride] = cm[dst[offset + x + 11 * stride] - ((d * 1) >> 4)];
     371             :                 }
     372             :             }
     373             :         }
     374             :     }
     375         111 : }
     376             : 
     377             : #define MV_FROZEN    8
     378             : #define MV_CHANGED   4
     379             : #define MV_UNCHANGED 2
     380             : #define MV_LISTED    1
     381       45458 : 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       45458 :     if (fixed[mb_xy])
     384       42432 :         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          37 : static void guess_mv(ERContext *s)
     391             : {
     392             :     int (*blocklist)[2], (*next_blocklist)[2];
     393             :     uint8_t *fixed;
     394          37 :     const ptrdiff_t mb_stride = s->mb_stride;
     395          37 :     const int mb_width  = s->mb_width;
     396          37 :     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          37 :     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          37 :     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          37 :     blocklist      = (int (*)[2])s->er_temp_buffer;
     408          37 :     next_blocklist = blocklist + s->mb_stride * s->mb_height;
     409          37 :     fixed          = (uint8_t *)(next_blocklist + s->mb_stride * s->mb_height);
     410             : 
     411          37 :     set_mv_strides(s, &mot_step, &mot_stride);
     412             : 
     413          37 :     num_avail = 0;
     414          37 :     if (s->last_pic.motion_val[0])
     415          31 :         ff_thread_await_progress(s->last_pic.tf, mb_height-1, 0);
     416       12514 :     for (i = 0; i < mb_width * mb_height; i++) {
     417       12477 :         const int mb_xy = s->mb_index2xy[i];
     418       12477 :         int f = 0;
     419       12477 :         int error = s->error_status_table[mb_xy];
     420             : 
     421       12477 :         if (IS_INTRA(s->cur_pic.mb_type[mb_xy]))
     422        4353 :             f = MV_FROZEN; // intra // FIXME check
     423       12477 :         if (!(error & ER_MV_ERROR))
     424        8503 :             f = MV_FROZEN; // inter with undamaged MV
     425             : 
     426       12477 :         fixed[mb_xy] = f;
     427       12477 :         if (f == MV_FROZEN)
     428        8956 :             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          74 :     if ((!(s->avctx->error_concealment&FF_EC_GUESS_MVS)) ||
     440          37 :         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          32 :     blocklist_length = 0;
     461         587 :     for (mb_y = 0; mb_y < mb_height; mb_y++) {
     462       12537 :         for (mb_x = 0; mb_x < mb_width; mb_x++) {
     463       11982 :             const int mb_xy = mb_x + mb_y * mb_stride;
     464       11982 :             if (fixed[mb_xy] == MV_FROZEN) {
     465        8956 :                 if (mb_x)               add_blocklist(blocklist, &blocklist_length, fixed, mb_x - 1, mb_y, mb_xy - 1);
     466        8956 :                 if (mb_y)               add_blocklist(blocklist, &blocklist_length, fixed, mb_x, mb_y - 1, mb_xy - mb_stride);
     467        8956 :                 if (mb_x+1 < mb_width)  add_blocklist(blocklist, &blocklist_length, fixed, mb_x + 1, mb_y, mb_xy + 1);
     468        8956 :                 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         120 :     for (depth = 0; ; depth++) {
     474             :         int changed, pass, none_left;
     475             :         int blocklist_index;
     476             : 
     477         120 :         none_left = 1;
     478         120 :         changed   = 1;
     479         745 :         for (pass = 0; (changed || pass < 2) && pass < 10; pass++) {
     480         625 :             int score_sum = 0;
     481             : 
     482         625 :             changed = 0;
     483       21387 :             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         120 :         if (none_left)
     695          32 :             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          37 : 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          37 :     if (!s->last_pic.f || !s->last_pic.f->data[0])
     727           6 :         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       33412 : void ff_er_frame_start(ERContext *s)
     798             : {
     799       33412 :     if (!s->avctx->error_concealment)
     800           0 :         return;
     801             : 
     802       33412 :     if (!s->mecc_inited) {
     803         713 :         ff_me_cmp_init(&s->mecc, s->avctx);
     804         713 :         s->mecc_inited = 1;
     805             :     }
     806             : 
     807       33412 :     memset(s->error_status_table, ER_MB_ERROR | VP_START | ER_MB_END,
     808       33412 :            s->mb_stride * s->mb_height * sizeof(uint8_t));
     809       33412 :     atomic_init(&s->error_count, 3 * s->mb_num);
     810       33412 :     s->error_occurred = 0;
     811             : }
     812             : 
     813      128421 : static int er_supported(ERContext *s)
     814             : {
     815      256842 :     if(s->avctx->hwaccel && s->avctx->hwaccel->decode_slice           ||
     816      247295 :        !s->cur_pic.f                                                  ||
     817      221040 :        s->cur_pic.field_picture                                       ||
     818      102166 :        s->avctx->profile == FF_PROFILE_MPEG4_SIMPLE_STUDIO
     819             :     )
     820       26255 :         return 0;
     821      102166 :     return 1;
     822             : }
     823             : 
     824             : /**
     825             :  * Add a slice.
     826             :  * @param endx   x component of the last macroblock, can be -1
     827             :  *               for the last of the previous line
     828             :  * @param status the status at the end (ER_MV_END, ER_AC_ERROR, ...), it is
     829             :  *               assumed that no earlier end or error of the same type occurred
     830             :  */
     831      161185 : void ff_er_add_slice(ERContext *s, int startx, int starty,
     832             :                      int endx, int endy, int status)
     833             : {
     834      161185 :     const int start_i  = av_clip(startx + starty * s->mb_width, 0, s->mb_num - 1);
     835      161185 :     const int end_i    = av_clip(endx   + endy   * s->mb_width, 0, s->mb_num);
     836      161185 :     const int start_xy = s->mb_index2xy[start_i];
     837      161185 :     const int end_xy   = s->mb_index2xy[end_i];
     838      161185 :     int mask           = -1;
     839             : 
     840      161185 :     if (s->avctx->hwaccel && s->avctx->hwaccel->decode_slice)
     841           0 :         return;
     842             : 
     843      161185 :     if (start_i > end_i || start_xy > end_xy) {
     844           0 :         av_log(s->avctx, AV_LOG_ERROR,
     845             :                "internal error, slice end before start\n");
     846           0 :         return;
     847             :     }
     848             : 
     849      161185 :     if (!s->avctx->error_concealment)
     850           0 :         return;
     851             : 
     852      161185 :     mask &= ~VP_START;
     853      161185 :     if (status & (ER_AC_ERROR | ER_AC_END)) {
     854      158228 :         mask           &= ~(ER_AC_ERROR | ER_AC_END);
     855      158228 :         atomic_fetch_add(&s->error_count, start_i - end_i - 1);
     856             :     }
     857      161185 :     if (status & (ER_DC_ERROR | ER_DC_END)) {
     858      158228 :         mask           &= ~(ER_DC_ERROR | ER_DC_END);
     859      158228 :         atomic_fetch_add(&s->error_count, start_i - end_i - 1);
     860             :     }
     861      161185 :     if (status & (ER_MV_ERROR | ER_MV_END)) {
     862      158228 :         mask           &= ~(ER_MV_ERROR | ER_MV_END);
     863      158228 :         atomic_fetch_add(&s->error_count, start_i - end_i - 1);
     864             :     }
     865             : 
     866      161185 :     if (status & ER_MB_ERROR) {
     867          21 :         s->error_occurred = 1;
     868          21 :         atomic_store(&s->error_count, INT_MAX);
     869             :     }
     870             : 
     871      161185 :     if (mask == ~0x7F) {
     872      156500 :         memset(&s->error_status_table[start_xy], 0,
     873      156500 :                (end_xy - start_xy) * sizeof(uint8_t));
     874             :     } else {
     875             :         int i;
     876      414133 :         for (i = start_xy; i < end_xy; i++)
     877      409448 :             s->error_status_table[i] &= mask;
     878             :     }
     879             : 
     880      161185 :     if (end_i == s->mb_num)
     881        3836 :         atomic_store(&s->error_count, INT_MAX);
     882             :     else {
     883      157349 :         s->error_status_table[end_xy] &= mask;
     884      157349 :         s->error_status_table[end_xy] |= status;
     885             :     }
     886             : 
     887      161185 :     s->error_status_table[start_xy] |= VP_START;
     888             : 
     889      288967 :     if (start_xy > 0 && !(s->avctx->active_thread_type & FF_THREAD_SLICE) &&
     890      229911 :         er_supported(s) && s->avctx->skip_top * s->mb_width < start_i) {
     891      102129 :         int prev_status = s->error_status_table[s->mb_index2xy[start_i - 1]];
     892             : 
     893      102129 :         prev_status &= ~ VP_START;
     894      102129 :         if (prev_status != (ER_MV_END | ER_DC_END | ER_AC_END)) {
     895          77 :             s->error_occurred = 1;
     896          77 :             atomic_store(&s->error_count, INT_MAX);
     897             :         }
     898             :     }
     899             : }
     900             : 
     901       29160 : void ff_er_frame_end(ERContext *s)
     902             : {
     903       29160 :     int *linesize = NULL;
     904             :     int i, mb_x, mb_y, error, error_type, dc_error, mv_error, ac_error;
     905             :     int distance;
     906       29160 :     int threshold_part[4] = { 100, 100, 100 };
     907       29160 :     int threshold = 50;
     908             :     int is_intra_likely;
     909       29160 :     int size = s->b8_stride * 2 * s->mb_height;
     910             : 
     911             :     /* We do not support ER of field pictures yet,
     912             :      * though it should not crash if enabled. */
     913       29799 :     if (!s->avctx->error_concealment || !atomic_load(&s->error_count)  ||
     914        1278 :         s->avctx->lowres                                               ||
     915         676 :         !er_supported(s)                                               ||
     916          74 :         atomic_load(&s->error_count) == 3 * s->mb_width *
     917          37 :                           (s->avctx->skip_top + s->avctx->skip_bottom)) {
     918       58246 :         return;
     919             :     }
     920          37 :     linesize = s->cur_pic.f->linesize;
     921         159 :     for (mb_x = 0; mb_x < s->mb_width; mb_x++) {
     922         152 :         int status = s->error_status_table[mb_x + (s->mb_height - 1) * s->mb_stride];
     923         152 :         if (status != 0x7F)
     924          30 :             break;
     925             :     }
     926             : 
     927          37 :     if (   mb_x == s->mb_width
     928           7 :         && s->avctx->codec_id == AV_CODEC_ID_MPEG2VIDEO
     929           0 :         && (FFALIGN(s->avctx->height, 16)&16)
     930           0 :         && atomic_load(&s->error_count) == 3 * s->mb_width * (s->avctx->skip_top + s->avctx->skip_bottom + 1)
     931             :     ) {
     932           0 :         av_log(s->avctx, AV_LOG_DEBUG, "ignoring last missing slice\n");
     933           0 :         return;
     934             :     }
     935             : 
     936          37 :     if (s->last_pic.f) {
     937          62 :         if (s->last_pic.f->width  != s->cur_pic.f->width  ||
     938          62 :             s->last_pic.f->height != s->cur_pic.f->height ||
     939          31 :             s->last_pic.f->format != s->cur_pic.f->format) {
     940           0 :             av_log(s->avctx, AV_LOG_WARNING, "Cannot use previous picture in error concealment\n");
     941           0 :             memset(&s->last_pic, 0, sizeof(s->last_pic));
     942             :         }
     943             :     }
     944          37 :     if (s->next_pic.f) {
     945          58 :         if (s->next_pic.f->width  != s->cur_pic.f->width  ||
     946          58 :             s->next_pic.f->height != s->cur_pic.f->height ||
     947          29 :             s->next_pic.f->format != s->cur_pic.f->format) {
     948           0 :             av_log(s->avctx, AV_LOG_WARNING, "Cannot use next picture in error concealment\n");
     949           0 :             memset(&s->next_pic, 0, sizeof(s->next_pic));
     950             :         }
     951             :     }
     952             : 
     953          37 :     if (!s->cur_pic.motion_val[0] || !s->cur_pic.ref_index[0]) {
     954           0 :         av_log(s->avctx, AV_LOG_ERROR, "Warning MVs not available\n");
     955             : 
     956           0 :         for (i = 0; i < 2; i++) {
     957           0 :             s->ref_index_buf[i]  = av_buffer_allocz(s->mb_stride * s->mb_height * 4 * sizeof(uint8_t));
     958           0 :             s->motion_val_buf[i] = av_buffer_allocz((size + 4) * 2 * sizeof(uint16_t));
     959           0 :             if (!s->ref_index_buf[i] || !s->motion_val_buf[i])
     960             :                 break;
     961           0 :             s->cur_pic.ref_index[i]  = s->ref_index_buf[i]->data;
     962           0 :             s->cur_pic.motion_val[i] = (int16_t (*)[2])s->motion_val_buf[i]->data + 4;
     963             :         }
     964           0 :         if (i < 2) {
     965           0 :             for (i = 0; i < 2; i++) {
     966           0 :                 av_buffer_unref(&s->ref_index_buf[i]);
     967           0 :                 av_buffer_unref(&s->motion_val_buf[i]);
     968           0 :                 s->cur_pic.ref_index[i]  = NULL;
     969           0 :                 s->cur_pic.motion_val[i] = NULL;
     970             :             }
     971           0 :             return;
     972             :         }
     973             :     }
     974             : 
     975          37 :     if (s->avctx->debug & FF_DEBUG_ER) {
     976           0 :         for (mb_y = 0; mb_y < s->mb_height; mb_y++) {
     977           0 :             for (mb_x = 0; mb_x < s->mb_width; mb_x++) {
     978           0 :                 int status = s->error_status_table[mb_x + mb_y * s->mb_stride];
     979             : 
     980           0 :                 av_log(s->avctx, AV_LOG_DEBUG, "%2X ", status);
     981             :             }
     982           0 :             av_log(s->avctx, AV_LOG_DEBUG, "\n");
     983             :         }
     984             :     }
     985             : 
     986             : #if 1
     987             :     /* handle overlapping slices */
     988         148 :     for (error_type = 1; error_type <= 3; error_type++) {
     989         111 :         int end_ok = 0;
     990             : 
     991       37542 :         for (i = s->mb_num - 1; i >= 0; i--) {
     992       37431 :             const int mb_xy = s->mb_index2xy[i];
     993       37431 :             int error       = s->error_status_table[mb_xy];
     994             : 
     995       37431 :             if (error & (1 << error_type))
     996       11175 :                 end_ok = 1;
     997       37431 :             if (error & (8 << error_type))
     998       11529 :                 end_ok = 1;
     999             : 
    1000       37431 :             if (!end_ok)
    1001          21 :                 s->error_status_table[mb_xy] |= 1 << error_type;
    1002             : 
    1003       37431 :             if (error & VP_START)
    1004       11583 :                 end_ok = 0;
    1005             :         }
    1006             :     }
    1007             : #endif
    1008             : #if 1
    1009             :     /* handle slices with partitions of different length */
    1010          37 :     if (s->partitioned_frame) {
    1011          29 :         int end_ok = 0;
    1012             : 
    1013       11513 :         for (i = s->mb_num - 1; i >= 0; i--) {
    1014       11484 :             const int mb_xy = s->mb_index2xy[i];
    1015       11484 :             int error       = s->error_status_table[mb_xy];
    1016             : 
    1017       11484 :             if (error & ER_AC_END)
    1018        3312 :                 end_ok = 0;
    1019       19656 :             if ((error & ER_MV_END) ||
    1020       16344 :                 (error & ER_DC_END) ||
    1021        8172 :                 (error & ER_AC_ERROR))
    1022        3312 :                 end_ok = 1;
    1023             : 
    1024       11484 :             if (!end_ok)
    1025           0 :                 s->error_status_table[mb_xy]|= ER_AC_ERROR;
    1026             : 
    1027       11484 :             if (error & VP_START)
    1028        3312 :                 end_ok = 0;
    1029             :         }
    1030             :     }
    1031             : #endif
    1032             :     /* handle missing slices */
    1033          37 :     if (s->avctx->err_recognition & AV_EF_EXPLODE) {
    1034           0 :         int end_ok = 1;
    1035             : 
    1036             :         // FIXME + 100 hack
    1037           0 :         for (i = s->mb_num - 2; i >= s->mb_width + 100; i--) {
    1038           0 :             const int mb_xy = s->mb_index2xy[i];
    1039           0 :             int error1 = s->error_status_table[mb_xy];
    1040           0 :             int error2 = s->error_status_table[s->mb_index2xy[i + 1]];
    1041             : 
    1042           0 :             if (error1 & VP_START)
    1043           0 :                 end_ok = 1;
    1044             : 
    1045           0 :             if (error2 == (VP_START | ER_MB_ERROR | ER_MB_END) &&
    1046           0 :                 error1 != (VP_START | ER_MB_ERROR | ER_MB_END) &&
    1047           0 :                 ((error1 & ER_AC_END) || (error1 & ER_DC_END) ||
    1048           0 :                 (error1 & ER_MV_END))) {
    1049             :                 // end & uninit
    1050           0 :                 end_ok = 0;
    1051             :             }
    1052             : 
    1053           0 :             if (!end_ok)
    1054           0 :                 s->error_status_table[mb_xy] |= ER_MB_ERROR;
    1055             :         }
    1056             :     }
    1057             : 
    1058             : #if 1
    1059             :     /* backward mark errors */
    1060          37 :     distance = 9999999;
    1061         148 :     for (error_type = 1; error_type <= 3; error_type++) {
    1062       37542 :         for (i = s->mb_num - 1; i >= 0; i--) {
    1063       37431 :             const int mb_xy = s->mb_index2xy[i];
    1064       37431 :             int       error = s->error_status_table[mb_xy];
    1065             : 
    1066       37431 :             if (!s->mbskip_table || !s->mbskip_table[mb_xy]) // FIXME partition specific
    1067       37353 :                 distance++;
    1068       37431 :             if (error & (1 << error_type))
    1069       11196 :                 distance = 0;
    1070             : 
    1071       37431 :             if (s->partitioned_frame) {
    1072       34452 :                 if (distance < threshold_part[error_type - 1])
    1073        9546 :                     s->error_status_table[mb_xy] |= 1 << error_type;
    1074             :             } else {
    1075        2979 :                 if (distance < threshold)
    1076        2304 :                     s->error_status_table[mb_xy] |= 1 << error_type;
    1077             :             }
    1078             : 
    1079       37431 :             if (error & VP_START)
    1080       11583 :                 distance = 9999999;
    1081             :         }
    1082             :     }
    1083             : #endif
    1084             : 
    1085             :     /* forward mark errors */
    1086          37 :     error = 0;
    1087       12514 :     for (i = 0; i < s->mb_num; i++) {
    1088       12477 :         const int mb_xy = s->mb_index2xy[i];
    1089       12477 :         int old_error   = s->error_status_table[mb_xy];
    1090             : 
    1091       12477 :         if (old_error & VP_START) {
    1092        3861 :             error = old_error & ER_MB_ERROR;
    1093             :         } else {
    1094        8616 :             error |= old_error & ER_MB_ERROR;
    1095        8616 :             s->error_status_table[mb_xy] |= error;
    1096             :         }
    1097             :     }
    1098             : #if 1
    1099             :     /* handle not partitioned case */
    1100          37 :     if (!s->partitioned_frame) {
    1101        1001 :         for (i = 0; i < s->mb_num; i++) {
    1102         993 :             const int mb_xy = s->mb_index2xy[i];
    1103         993 :             int error = s->error_status_table[mb_xy];
    1104         993 :             if (error & ER_MB_ERROR)
    1105         792 :                 error |= ER_MB_ERROR;
    1106         993 :             s->error_status_table[mb_xy] = error;
    1107             :         }
    1108             :     }
    1109             : #endif
    1110             : 
    1111          37 :     dc_error = ac_error = mv_error = 0;
    1112       12514 :     for (i = 0; i < s->mb_num; i++) {
    1113       12477 :         const int mb_xy = s->mb_index2xy[i];
    1114       12477 :         int error = s->error_status_table[mb_xy];
    1115       12477 :         if (error & ER_DC_ERROR)
    1116        3974 :             dc_error++;
    1117       12477 :         if (error & ER_AC_ERROR)
    1118        3974 :             ac_error++;
    1119       12477 :         if (error & ER_MV_ERROR)
    1120        3974 :             mv_error++;
    1121             :     }
    1122          37 :     av_log(s->avctx, AV_LOG_INFO, "concealing %d DC, %d AC, %d MV errors in %c frame\n",
    1123          37 :            dc_error, ac_error, mv_error, av_get_picture_type_char(s->cur_pic.f->pict_type));
    1124             : 
    1125          37 :     is_intra_likely = is_intra_more_likely(s);
    1126             : 
    1127             :     /* set unknown mb-type to most likely */
    1128       12514 :     for (i = 0; i < s->mb_num; i++) {
    1129       12477 :         const int mb_xy = s->mb_index2xy[i];
    1130       12477 :         int error = s->error_status_table[mb_xy];
    1131       12477 :         if (!((error & ER_DC_ERROR) && (error & ER_MV_ERROR)))
    1132        8503 :             continue;
    1133             : 
    1134        3974 :         if (is_intra_likely)
    1135         453 :             s->cur_pic.mb_type[mb_xy] = MB_TYPE_INTRA4x4;
    1136             :         else
    1137        3521 :             s->cur_pic.mb_type[mb_xy] = MB_TYPE_16x16 | MB_TYPE_L0;
    1138             :     }
    1139             : 
    1140             :     // change inter to intra blocks if no reference frames are available
    1141          43 :     if (!(s->last_pic.f && s->last_pic.f->data[0]) &&
    1142           9 :         !(s->next_pic.f && s->next_pic.f->data[0]))
    1143         501 :         for (i = 0; i < s->mb_num; i++) {
    1144         498 :             const int mb_xy = s->mb_index2xy[i];
    1145         498 :             if (!IS_INTRA(s->cur_pic.mb_type[mb_xy]))
    1146           0 :                 s->cur_pic.mb_type[mb_xy] = MB_TYPE_INTRA4x4;
    1147             :         }
    1148             : 
    1149             :     /* handle inter blocks with damaged AC */
    1150         637 :     for (mb_y = 0; mb_y < s->mb_height; mb_y++) {
    1151       13077 :         for (mb_x = 0; mb_x < s->mb_width; mb_x++) {
    1152       12477 :             const int mb_xy   = mb_x + mb_y * s->mb_stride;
    1153       12477 :             const int mb_type = s->cur_pic.mb_type[mb_xy];
    1154       12477 :             const int dir     = !(s->last_pic.f && s->last_pic.f->data[0]);
    1155       12477 :             const int mv_dir  = dir ? MV_DIR_BACKWARD : MV_DIR_FORWARD;
    1156             :             int mv_type;
    1157             : 
    1158       12477 :             int error = s->error_status_table[mb_xy];
    1159             : 
    1160       12477 :             if (IS_INTRA(mb_type))
    1161        4353 :                 continue; // intra
    1162        8124 :             if (error & ER_MV_ERROR)
    1163        3521 :                 continue; // inter with damaged MV
    1164        4603 :             if (!(error & ER_AC_ERROR))
    1165        4603 :                 continue; // undamaged inter
    1166             : 
    1167           0 :             if (IS_8X8(mb_type)) {
    1168           0 :                 int mb_index = mb_x * 2 + mb_y * 2 * s->b8_stride;
    1169             :                 int j;
    1170           0 :                 mv_type = MV_TYPE_8X8;
    1171           0 :                 for (j = 0; j < 4; j++) {
    1172           0 :                     s->mv[0][j][0] = s->cur_pic.motion_val[dir][mb_index + (j & 1) + (j >> 1) * s->b8_stride][0];
    1173           0 :                     s->mv[0][j][1] = s->cur_pic.motion_val[dir][mb_index + (j & 1) + (j >> 1) * s->b8_stride][1];
    1174             :                 }
    1175             :             } else {
    1176           0 :                 mv_type     = MV_TYPE_16X16;
    1177           0 :                 s->mv[0][0][0] = s->cur_pic.motion_val[dir][mb_x * 2 + mb_y * 2 * s->b8_stride][0];
    1178           0 :                 s->mv[0][0][1] = s->cur_pic.motion_val[dir][mb_x * 2 + mb_y * 2 * s->b8_stride][1];
    1179             :             }
    1180             : 
    1181           0 :             s->decode_mb(s->opaque, 0 /* FIXME H.264 partitioned slices need this set */,
    1182             :                          mv_dir, mv_type, &s->mv, mb_x, mb_y, 0, 0);
    1183             :         }
    1184             :     }
    1185             : 
    1186             :     /* guess MVs */
    1187          37 :     if (s->cur_pic.f->pict_type == AV_PICTURE_TYPE_B) {
    1188           0 :         for (mb_y = 0; mb_y < s->mb_height; mb_y++) {
    1189           0 :             for (mb_x = 0; mb_x < s->mb_width; mb_x++) {
    1190           0 :                 int       xy      = mb_x * 2 + mb_y * 2 * s->b8_stride;
    1191           0 :                 const int mb_xy   = mb_x + mb_y * s->mb_stride;
    1192           0 :                 const int mb_type = s->cur_pic.mb_type[mb_xy];
    1193           0 :                 int mv_dir = MV_DIR_FORWARD | MV_DIR_BACKWARD;
    1194             : 
    1195           0 :                 int error = s->error_status_table[mb_xy];
    1196             : 
    1197           0 :                 if (IS_INTRA(mb_type))
    1198           0 :                     continue;
    1199           0 :                 if (!(error & ER_MV_ERROR))
    1200           0 :                     continue; // inter with undamaged MV
    1201           0 :                 if (!(error & ER_AC_ERROR))
    1202           0 :                     continue; // undamaged inter
    1203             : 
    1204           0 :                 if (!(s->last_pic.f && s->last_pic.f->data[0]))
    1205           0 :                     mv_dir &= ~MV_DIR_FORWARD;
    1206           0 :                 if (!(s->next_pic.f && s->next_pic.f->data[0]))
    1207           0 :                     mv_dir &= ~MV_DIR_BACKWARD;
    1208             : 
    1209           0 :                 if (s->pp_time) {
    1210           0 :                     int time_pp = s->pp_time;
    1211           0 :                     int time_pb = s->pb_time;
    1212             : 
    1213           0 :                     av_assert0(s->avctx->codec_id != AV_CODEC_ID_H264);
    1214           0 :                     ff_thread_await_progress(s->next_pic.tf, mb_y, 0);
    1215             : 
    1216           0 :                     s->mv[0][0][0] = s->next_pic.motion_val[0][xy][0] *  time_pb            / time_pp;
    1217           0 :                     s->mv[0][0][1] = s->next_pic.motion_val[0][xy][1] *  time_pb            / time_pp;
    1218           0 :                     s->mv[1][0][0] = s->next_pic.motion_val[0][xy][0] * (time_pb - time_pp) / time_pp;
    1219           0 :                     s->mv[1][0][1] = s->next_pic.motion_val[0][xy][1] * (time_pb - time_pp) / time_pp;
    1220             :                 } else {
    1221           0 :                     s->mv[0][0][0] = 0;
    1222           0 :                     s->mv[0][0][1] = 0;
    1223           0 :                     s->mv[1][0][0] = 0;
    1224           0 :                     s->mv[1][0][1] = 0;
    1225             :                 }
    1226             : 
    1227           0 :                 s->decode_mb(s->opaque, 0, mv_dir, MV_TYPE_16X16, &s->mv,
    1228             :                              mb_x, mb_y, 0, 0);
    1229             :             }
    1230             :         }
    1231             :     } else
    1232          37 :         guess_mv(s);
    1233             : 
    1234             :     /* the filters below manipulate raw image, skip them */
    1235             :     if (CONFIG_XVMC && s->avctx->hwaccel && s->avctx->hwaccel->decode_mb)
    1236             :         goto ec_clean;
    1237             :     /* fill DC for inter blocks */
    1238         637 :     for (mb_y = 0; mb_y < s->mb_height; mb_y++) {
    1239       13077 :         for (mb_x = 0; mb_x < s->mb_width; mb_x++) {
    1240             :             int dc, dcu, dcv, y, n;
    1241             :             int16_t *dc_ptr;
    1242             :             uint8_t *dest_y, *dest_cb, *dest_cr;
    1243       12477 :             const int mb_xy   = mb_x + mb_y * s->mb_stride;
    1244       12477 :             const int mb_type = s->cur_pic.mb_type[mb_xy];
    1245             : 
    1246             :             // error = s->error_status_table[mb_xy];
    1247             : 
    1248       12477 :             if (IS_INTRA(mb_type) && s->partitioned_frame)
    1249        3855 :                 continue;
    1250             :             // if (error & ER_MV_ERROR)
    1251             :             //     continue; // inter data damaged FIXME is this good?
    1252             : 
    1253        8622 :             dest_y  = s->cur_pic.f->data[0] + mb_x * 16 + mb_y * 16 * linesize[0];
    1254        8622 :             dest_cb = s->cur_pic.f->data[1] + mb_x *  8 + mb_y *  8 * linesize[1];
    1255        8622 :             dest_cr = s->cur_pic.f->data[2] + mb_x *  8 + mb_y *  8 * linesize[2];
    1256             : 
    1257        8622 :             dc_ptr = &s->dc_val[0][mb_x * 2 + mb_y * 2 * s->b8_stride];
    1258       43110 :             for (n = 0; n < 4; n++) {
    1259       34488 :                 dc = 0;
    1260      310392 :                 for (y = 0; y < 8; y++) {
    1261             :                     int x;
    1262     2483136 :                     for (x = 0; x < 8; x++)
    1263     4414464 :                        dc += dest_y[x + (n & 1) * 8 +
    1264     2207232 :                              (y + (n >> 1) * 8) * linesize[0]];
    1265             :                 }
    1266       34488 :                 dc_ptr[(n & 1) + (n >> 1) * s->b8_stride] = (dc + 4) >> 3;
    1267             :             }
    1268             : 
    1269        8622 :             if (!s->cur_pic.f->data[2])
    1270           0 :                 continue;
    1271             : 
    1272        8622 :             dcu = dcv = 0;
    1273       77598 :             for (y = 0; y < 8; y++) {
    1274             :                 int x;
    1275      620784 :                 for (x = 0; x < 8; x++) {
    1276      551808 :                     dcu += dest_cb[x + y * linesize[1]];
    1277      551808 :                     dcv += dest_cr[x + y * linesize[2]];
    1278             :                 }
    1279             :             }
    1280        8622 :             s->dc_val[1][mb_x + mb_y * s->mb_stride] = (dcu + 4) >> 3;
    1281        8622 :             s->dc_val[2][mb_x + mb_y * s->mb_stride] = (dcv + 4) >> 3;
    1282             :         }
    1283             :     }
    1284             : #if 1
    1285             :     /* guess DC for damaged blocks */
    1286          37 :     guess_dc(s, s->dc_val[0], s->mb_width*2, s->mb_height*2, s->b8_stride, 1);
    1287          37 :     guess_dc(s, s->dc_val[1], s->mb_width  , s->mb_height  , s->mb_stride, 0);
    1288          37 :     guess_dc(s, s->dc_val[2], s->mb_width  , s->mb_height  , s->mb_stride, 0);
    1289             : #endif
    1290             : 
    1291             :     /* filter luma DC */
    1292          37 :     filter181(s->dc_val[0], s->mb_width * 2, s->mb_height * 2, s->b8_stride);
    1293             : 
    1294             : #if 1
    1295             :     /* render DC only intra */
    1296         637 :     for (mb_y = 0; mb_y < s->mb_height; mb_y++) {
    1297       13077 :         for (mb_x = 0; mb_x < s->mb_width; mb_x++) {
    1298             :             uint8_t *dest_y, *dest_cb, *dest_cr;
    1299       12477 :             const int mb_xy   = mb_x + mb_y * s->mb_stride;
    1300       12477 :             const int mb_type = s->cur_pic.mb_type[mb_xy];
    1301             : 
    1302       12477 :             int error = s->error_status_table[mb_xy];
    1303             : 
    1304       12477 :             if (IS_INTER(mb_type))
    1305        8124 :                 continue;
    1306        4353 :             if (!(error & ER_AC_ERROR))
    1307        3900 :                 continue; // undamaged
    1308             : 
    1309         453 :             dest_y  = s->cur_pic.f->data[0] + mb_x * 16 + mb_y * 16 * linesize[0];
    1310         453 :             dest_cb = s->cur_pic.f->data[1] + mb_x *  8 + mb_y *  8 * linesize[1];
    1311         453 :             dest_cr = s->cur_pic.f->data[2] + mb_x *  8 + mb_y *  8 * linesize[2];
    1312         453 :             if (!s->cur_pic.f->data[2])
    1313           0 :                 dest_cb = dest_cr = NULL;
    1314             : 
    1315         453 :             put_dc(s, dest_y, dest_cb, dest_cr, mb_x, mb_y);
    1316             :         }
    1317             :     }
    1318             : #endif
    1319             : 
    1320          37 :     if (s->avctx->error_concealment & FF_EC_DEBLOCK) {
    1321             :         /* filter horizontal block boundaries */
    1322          74 :         h_block_filter(s, s->cur_pic.f->data[0], s->mb_width * 2,
    1323          74 :                        s->mb_height * 2, linesize[0], 1);
    1324             : 
    1325             :         /* filter vertical block boundaries */
    1326          74 :         v_block_filter(s, s->cur_pic.f->data[0], s->mb_width * 2,
    1327          74 :                        s->mb_height * 2, linesize[0], 1);
    1328             : 
    1329          37 :         if (s->cur_pic.f->data[2]) {
    1330          37 :             h_block_filter(s, s->cur_pic.f->data[1], s->mb_width,
    1331          37 :                         s->mb_height, linesize[1], 0);
    1332          37 :             h_block_filter(s, s->cur_pic.f->data[2], s->mb_width,
    1333          37 :                         s->mb_height, linesize[2], 0);
    1334          37 :             v_block_filter(s, s->cur_pic.f->data[1], s->mb_width,
    1335          37 :                         s->mb_height, linesize[1], 0);
    1336          37 :             v_block_filter(s, s->cur_pic.f->data[2], s->mb_width,
    1337          37 :                         s->mb_height, linesize[2], 0);
    1338             :         }
    1339             :     }
    1340             : 
    1341          37 : ec_clean:
    1342             :     /* clean a few tables */
    1343       12514 :     for (i = 0; i < s->mb_num; i++) {
    1344       12477 :         const int mb_xy = s->mb_index2xy[i];
    1345       12477 :         int       error = s->error_status_table[mb_xy];
    1346             : 
    1347       23961 :         if (s->mbskip_table && s->cur_pic.f->pict_type != AV_PICTURE_TYPE_B &&
    1348       11484 :             (error & (ER_DC_ERROR | ER_MV_ERROR | ER_AC_ERROR))) {
    1349        3182 :             s->mbskip_table[mb_xy] = 0;
    1350             :         }
    1351       12477 :         if (s->mbintra_table)
    1352       11484 :             s->mbintra_table[mb_xy] = 1;
    1353             :     }
    1354             : 
    1355         111 :     for (i = 0; i < 2; i++) {
    1356          74 :         av_buffer_unref(&s->ref_index_buf[i]);
    1357          74 :         av_buffer_unref(&s->motion_val_buf[i]);
    1358          74 :         s->cur_pic.ref_index[i]  = NULL;
    1359          74 :         s->cur_pic.motion_val[i] = NULL;
    1360             :     }
    1361             : 
    1362          37 :     memset(&s->cur_pic, 0, sizeof(ERPicture));
    1363          37 :     memset(&s->last_pic, 0, sizeof(ERPicture));
    1364          37 :     memset(&s->next_pic, 0, sizeof(ERPicture));
    1365             : }

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