/* * Error resilience / concealment * * Copyright (c) 2002 Michael Niedermayer <michaelni@gmx.at> * * This library is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public * License as published by the Free Software Foundation; either * version 2 of the License, or (at your option) any later version. * * This library is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public * License along with this library; if not, write to the Free Software * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA */ /** * @file error_resilience.c * Error resilience / concealment. */ #include <limits.h> #include "avcodec.h" #include "dsputil.h" #include "mpegvideo.h" #include "common.h" /** * replaces the current MB with a flat dc only version. */ static void put_dc(MpegEncContext *s, uint8_t *dest_y, uint8_t *dest_cb, uint8_t *dest_cr, int mb_x, int mb_y) { int dc, dcu, dcv, y, i; for(i=0; i<4; i++){ dc= s->dc_val[0][mb_x*2+1 + (i&1) + (mb_y*2+1 + (i>>1))*(s->mb_width*2+2)]; if(dc<0) dc=0; else if(dc>2040) dc=2040; for(y=0; y<8; y++){ int x; for(x=0; x<8; x++){ dest_y[x + (i&1)*8 + (y + (i>>1)*8)*s->linesize]= dc/8; } } } dcu = s->dc_val[1][mb_x+1 + (mb_y+1)*(s->mb_width+2)]; dcv = s->dc_val[2][mb_x+1 + (mb_y+1)*(s->mb_width+2)]; if (dcu<0 ) dcu=0; else if(dcu>2040) dcu=2040; if (dcv<0 ) dcv=0; else if(dcv>2040) dcv=2040; for(y=0; y<8; y++){ int x; for(x=0; x<8; x++){ dest_cb[x + y*(s->uvlinesize)]= dcu/8; dest_cr[x + y*(s->uvlinesize)]= dcv/8; } } } static void filter181(int16_t *data, int width, int height, int stride){ int x,y; /* horizontal filter */ for(y=1; y<height-1; y++){ int prev_dc= data[0 + y*stride]; for(x=1; x<width-1; x++){ int dc; dc= - prev_dc + data[x + y*stride]*8 - data[x + 1 + y*stride]; dc= (dc*10923 + 32768)>>16; prev_dc= data[x + y*stride]; data[x + y*stride]= dc; } } /* vertical filter */ for(x=1; x<width-1; x++){ int prev_dc= data[x]; for(y=1; y<height-1; y++){ int dc; dc= - prev_dc + data[x + y *stride]*8 - data[x + (y+1)*stride]; dc= (dc*10923 + 32768)>>16; prev_dc= data[x + y*stride]; data[x + y*stride]= dc; } } } /** * guess the dc of blocks which dont have a undamaged dc * @param w width in 8 pixel blocks * @param h height in 8 pixel blocks */ static void guess_dc(MpegEncContext *s, int16_t *dc, int w, int h, int stride, int is_luma){ int b_x, b_y; for(b_y=0; b_y<h; b_y++){ for(b_x=0; b_x<w; b_x++){ int color[4]={1024,1024,1024,1024}; int distance[4]={9999,9999,9999,9999}; int mb_index, error, j; int64_t guess, weight_sum; mb_index= (b_x>>is_luma) + (b_y>>is_luma)*s->mb_stride; error= s->error_status_table[mb_index]; if(IS_INTER(s->current_picture.mb_type[mb_index])) continue; //inter if(!(error&DC_ERROR)) continue; //dc-ok /* right block */ for(j=b_x+1; j<w; j++){ int mb_index_j= (j>>is_luma) + (b_y>>is_luma)*s->mb_stride; int error_j= s->error_status_table[mb_index_j]; int intra_j= IS_INTRA(s->current_picture.mb_type[mb_index_j]); if(intra_j==0 || !(error_j&DC_ERROR)){ color[0]= dc[j + b_y*stride]; distance[0]= j-b_x; break; } } /* left block */ for(j=b_x-1; j>=0; j--){ int mb_index_j= (j>>is_luma) + (b_y>>is_luma)*s->mb_stride; int error_j= s->error_status_table[mb_index_j]; int intra_j= IS_INTRA(s->current_picture.mb_type[mb_index_j]); if(intra_j==0 || !(error_j&DC_ERROR)){ color[1]= dc[j + b_y*stride]; distance[1]= b_x-j; break; } } /* bottom block */ for(j=b_y+1; j<h; j++){ int mb_index_j= (b_x>>is_luma) + (j>>is_luma)*s->mb_stride; int error_j= s->error_status_table[mb_index_j]; int intra_j= IS_INTRA(s->current_picture.mb_type[mb_index_j]); if(intra_j==0 || !(error_j&DC_ERROR)){ color[2]= dc[b_x + j*stride]; distance[2]= j-b_y; break; } } /* top block */ for(j=b_y-1; j>=0; j--){ int mb_index_j= (b_x>>is_luma) + (j>>is_luma)*s->mb_stride; int error_j= s->error_status_table[mb_index_j]; int intra_j= IS_INTRA(s->current_picture.mb_type[mb_index_j]); if(intra_j==0 || !(error_j&DC_ERROR)){ color[3]= dc[b_x + j*stride]; distance[3]= b_y-j; break; } } weight_sum=0; guess=0; for(j=0; j<4; j++){ int64_t weight= 256*256*256*16/distance[j]; guess+= weight*(int64_t)color[j]; weight_sum+= weight; } guess= (guess + weight_sum/2) / weight_sum; dc[b_x + b_y*stride]= guess; } } } /** * simple horizontal deblocking filter used for error resilience * @param w width in 8 pixel blocks * @param h height in 8 pixel blocks */ static void h_block_filter(MpegEncContext *s, uint8_t *dst, int w, int h, int stride, int is_luma){ int b_x, b_y; uint8_t *cm = cropTbl + MAX_NEG_CROP; for(b_y=0; b_y<h; b_y++){ for(b_x=0; b_x<w-1; b_x++){ int y; int left_status = s->error_status_table[( b_x >>is_luma) + (b_y>>is_luma)*s->mb_stride]; int right_status= s->error_status_table[((b_x+1)>>is_luma) + (b_y>>is_luma)*s->mb_stride]; int left_intra= IS_INTRA(s->current_picture.mb_type [( b_x >>is_luma) + (b_y>>is_luma)*s->mb_stride]); int right_intra= IS_INTRA(s->current_picture.mb_type [((b_x+1)>>is_luma) + (b_y>>is_luma)*s->mb_stride]); int left_damage = left_status&(DC_ERROR|AC_ERROR|MV_ERROR); int right_damage= right_status&(DC_ERROR|AC_ERROR|MV_ERROR); int offset= b_x*8 + b_y*stride*8; int16_t *left_mv= s->motion_val[s->block_wrap[0]*((b_y<<(1-is_luma)) + 1) + ( b_x <<(1-is_luma))]; int16_t *right_mv= s->motion_val[s->block_wrap[0]*((b_y<<(1-is_luma)) + 1) + ((b_x+1)<<(1-is_luma))]; if(!(left_damage||right_damage)) continue; // both undamaged if( (!left_intra) && (!right_intra) && ABS(left_mv[0]-right_mv[0]) + ABS(left_mv[1]+right_mv[1]) < 2) continue; for(y=0; y<8; y++){ int a,b,c,d; a= dst[offset + 7 + y*stride] - dst[offset + 6 + y*stride]; b= dst[offset + 8 + y*stride] - dst[offset + 7 + y*stride]; c= dst[offset + 9 + y*stride] - dst[offset + 8 + y*stride]; d= ABS(b) - ((ABS(a) + ABS(c) + 1)>>1); d= FFMAX(d, 0); if(b<0) d= -d; if(d==0) continue; if(!(left_damage && right_damage)) d= d*16/9; if(left_damage){ dst[offset + 7 + y*stride] = cm[dst[offset + 7 + y*stride] + ((d*7)>>4)]; dst[offset + 6 + y*stride] = cm[dst[offset + 6 + y*stride] + ((d*5)>>4)]; dst[offset + 5 + y*stride] = cm[dst[offset + 5 + y*stride] + ((d*3)>>4)]; dst[offset + 4 + y*stride] = cm[dst[offset + 4 + y*stride] + ((d*1)>>4)]; } if(right_damage){ dst[offset + 8 + y*stride] = cm[dst[offset + 8 + y*stride] - ((d*7)>>4)]; dst[offset + 9 + y*stride] = cm[dst[offset + 9 + y*stride] - ((d*5)>>4)]; dst[offset + 10+ y*stride] = cm[dst[offset +10 + y*stride] - ((d*3)>>4)]; dst[offset + 11+ y*stride] = cm[dst[offset +11 + y*stride] - ((d*1)>>4)]; } } } } } /** * simple vertical deblocking filter used for error resilience * @param w width in 8 pixel blocks * @param h height in 8 pixel blocks */ static void v_block_filter(MpegEncContext *s, uint8_t *dst, int w, int h, int stride, int is_luma){ int b_x, b_y; uint8_t *cm = cropTbl + MAX_NEG_CROP; for(b_y=0; b_y<h-1; b_y++){ for(b_x=0; b_x<w; b_x++){ int x; int top_status = s->error_status_table[(b_x>>is_luma) + ( b_y >>is_luma)*s->mb_stride]; int bottom_status= s->error_status_table[(b_x>>is_luma) + ((b_y+1)>>is_luma)*s->mb_stride]; int top_intra= IS_INTRA(s->current_picture.mb_type [(b_x>>is_luma) + ( b_y >>is_luma)*s->mb_stride]); int bottom_intra= IS_INTRA(s->current_picture.mb_type [(b_x>>is_luma) + ((b_y+1)>>is_luma)*s->mb_stride]); int top_damage = top_status&(DC_ERROR|AC_ERROR|MV_ERROR); int bottom_damage= bottom_status&(DC_ERROR|AC_ERROR|MV_ERROR); int offset= b_x*8 + b_y*stride*8; int16_t *top_mv= s->motion_val[s->block_wrap[0]*(( b_y <<(1-is_luma)) + 1) + (b_x<<(1-is_luma))]; int16_t *bottom_mv= s->motion_val[s->block_wrap[0]*(((b_y+1)<<(1-is_luma)) + 1) + (b_x<<(1-is_luma))]; if(!(top_damage||bottom_damage)) continue; // both undamaged if( (!top_intra) && (!bottom_intra) && ABS(top_mv[0]-bottom_mv[0]) + ABS(top_mv[1]+bottom_mv[1]) < 2) continue; for(x=0; x<8; x++){ int a,b,c,d; a= dst[offset + x + 7*stride] - dst[offset + x + 6*stride]; b= dst[offset + x + 8*stride] - dst[offset + x + 7*stride]; c= dst[offset + x + 9*stride] - dst[offset + x + 8*stride]; d= ABS(b) - ((ABS(a) + ABS(c)+1)>>1); d= FFMAX(d, 0); if(b<0) d= -d; if(d==0) continue; if(!(top_damage && bottom_damage)) d= d*16/9; if(top_damage){ dst[offset + x + 7*stride] = cm[dst[offset + x + 7*stride] + ((d*7)>>4)]; dst[offset + x + 6*stride] = cm[dst[offset + x + 6*stride] + ((d*5)>>4)]; dst[offset + x + 5*stride] = cm[dst[offset + x + 5*stride] + ((d*3)>>4)]; dst[offset + x + 4*stride] = cm[dst[offset + x + 4*stride] + ((d*1)>>4)]; } if(bottom_damage){ dst[offset + x + 8*stride] = cm[dst[offset + x + 8*stride] - ((d*7)>>4)]; dst[offset + x + 9*stride] = cm[dst[offset + x + 9*stride] - ((d*5)>>4)]; dst[offset + x + 10*stride] = cm[dst[offset + x + 10*stride] - ((d*3)>>4)]; dst[offset + x + 11*stride] = cm[dst[offset + x + 11*stride] - ((d*1)>>4)]; } } } } } static void guess_mv(MpegEncContext *s){ uint8_t fixed[s->mb_stride * s->mb_height]; #define MV_FROZEN 3 #define MV_CHANGED 2 #define MV_UNCHANGED 1 const int mb_stride = s->mb_stride; const int mb_width = s->mb_width; const int mb_height= s->mb_height; int i, depth, num_avail; int mb_x, mb_y; num_avail=0; for(i=0; i<s->mb_num; i++){ const int mb_xy= s->mb_index2xy[ i ]; int f=0; int error= s->error_status_table[mb_xy]; if(IS_INTRA(s->current_picture.mb_type[mb_xy])) f=MV_FROZEN; //intra //FIXME check if(!(error&MV_ERROR)) f=MV_FROZEN; //inter with undamaged MV fixed[mb_xy]= f; if(f==MV_FROZEN) num_avail++; } if((!(s->avctx->error_concealment&FF_EC_GUESS_MVS)) || num_avail <= mb_width/2){ for(mb_y=0; mb_y<s->mb_height; mb_y++){ for(mb_x=0; mb_x<s->mb_width; mb_x++){ const int mb_xy= mb_x + mb_y*s->mb_stride; if(IS_INTRA(s->current_picture.mb_type[mb_xy])) continue; if(!(s->error_status_table[mb_xy]&MV_ERROR)) continue; s->mv_dir = MV_DIR_FORWARD; s->mb_intra=0; s->mv_type = MV_TYPE_16X16; s->mb_skiped=0; s->dsp.clear_blocks(s->block[0]); s->mb_x= mb_x; s->mb_y= mb_y; s->mv[0][0][0]= 0; s->mv[0][0][1]= 0; MPV_decode_mb(s, s->block); } } return; } for(depth=0;; depth++){ int changed, pass, none_left; none_left=1; changed=1; for(pass=0; (changed || pass<2) && pass<10; pass++){ int mb_x, mb_y; int score_sum=0; changed=0; for(mb_y=0; mb_y<s->mb_height; mb_y++){ for(mb_x=0; mb_x<s->mb_width; mb_x++){ const int mb_xy= mb_x + mb_y*s->mb_stride; int mv_predictor[8][2]={{0}}; int pred_count=0; int j; int best_score=256*256*256*64; int best_pred=0; const int mot_stride= mb_width*2+2; const int mot_index= mb_x*2 + 1 + (mb_y*2+1)*mot_stride; int prev_x= s->motion_val[mot_index][0]; int prev_y= s->motion_val[mot_index][1]; if((mb_x^mb_y^pass)&1) continue; if(fixed[mb_xy]==MV_FROZEN) continue; assert(!IS_INTRA(s->current_picture.mb_type[mb_xy])); assert(s->last_picture_ptr && s->last_picture_ptr->data[0]); j=0; if(mb_x>0 && fixed[mb_xy-1 ]==MV_FROZEN) j=1; if(mb_x+1<mb_width && fixed[mb_xy+1 ]==MV_FROZEN) j=1; if(mb_y>0 && fixed[mb_xy-mb_stride]==MV_FROZEN) j=1; if(mb_y+1<mb_height && fixed[mb_xy+mb_stride]==MV_FROZEN) j=1; if(j==0) continue; j=0; if(mb_x>0 && fixed[mb_xy-1 ]==MV_CHANGED) j=1; if(mb_x+1<mb_width && fixed[mb_xy+1 ]==MV_CHANGED) j=1; if(mb_y>0 && fixed[mb_xy-mb_stride]==MV_CHANGED) j=1; if(mb_y+1<mb_height && fixed[mb_xy+mb_stride]==MV_CHANGED) j=1; if(j==0 && pass>1) continue; none_left=0; if(mb_x>0 && fixed[mb_xy-1]){ mv_predictor[pred_count][0]= s->motion_val[mot_index - 2][0]; mv_predictor[pred_count][1]= s->motion_val[mot_index - 2][1]; pred_count++; } if(mb_x+1<mb_width && fixed[mb_xy+1]){ mv_predictor[pred_count][0]= s->motion_val[mot_index + 2][0]; mv_predictor[pred_count][1]= s->motion_val[mot_index + 2][1]; pred_count++; } if(mb_y>0 && fixed[mb_xy-mb_stride]){ mv_predictor[pred_count][0]= s->motion_val[mot_index - mot_stride*2][0]; mv_predictor[pred_count][1]= s->motion_val[mot_index - mot_stride*2][1]; pred_count++; } if(mb_y+1<mb_height && fixed[mb_xy+mb_stride]){ mv_predictor[pred_count][0]= s->motion_val[mot_index + mot_stride*2][0]; mv_predictor[pred_count][1]= s->motion_val[mot_index + mot_stride*2][1]; pred_count++; } if(pred_count==0) continue; if(pred_count>1){ int sum_x=0, sum_y=0; int max_x, max_y, min_x, min_y; for(j=0; j<pred_count; j++){ sum_x+= mv_predictor[j][0]; sum_y+= mv_predictor[j][1]; } /* mean */ mv_predictor[pred_count][0] = sum_x/j; mv_predictor[pred_count][1] = sum_y/j; /* median */ if(pred_count>=3){ min_y= min_x= 99999; max_y= max_x=-99999; }else{ min_x=min_y=max_x=max_y=0; } for(j=0; j<pred_count; j++){ max_x= FFMAX(max_x, mv_predictor[j][0]); max_y= FFMAX(max_y, mv_predictor[j][1]); min_x= FFMIN(min_x, mv_predictor[j][0]); min_y= FFMIN(min_y, mv_predictor[j][1]); } mv_predictor[pred_count+1][0] = sum_x - max_x - min_x; mv_predictor[pred_count+1][1] = sum_y - max_y - min_y; if(pred_count==4){ mv_predictor[pred_count+1][0] /= 2; mv_predictor[pred_count+1][1] /= 2; } pred_count+=2; } /* zero MV */ pred_count++; /* last MV */ mv_predictor[pred_count][0]= s->motion_val[mot_index][0]; mv_predictor[pred_count][1]= s->motion_val[mot_index][1]; pred_count++; s->mv_dir = MV_DIR_FORWARD; s->mb_intra=0; s->mv_type = MV_TYPE_16X16; s->mb_skiped=0; s->dsp.clear_blocks(s->block[0]); s->mb_x= mb_x; s->mb_y= mb_y; for(j=0; j<pred_count; j++){ int score=0; uint8_t *src= s->current_picture.data[0] + mb_x*16 + mb_y*16*s->linesize; s->motion_val[mot_index][0]= s->mv[0][0][0]= mv_predictor[j][0]; s->motion_val[mot_index][1]= s->mv[0][0][1]= mv_predictor[j][1]; MPV_decode_mb(s, s->block); if(mb_x>0 && fixed[mb_xy-1]){ int k; for(k=0; k<16; k++) score += ABS(src[k*s->linesize-1 ]-src[k*s->linesize ]); } if(mb_x+1<mb_width && fixed[mb_xy+1]){ int k; for(k=0; k<16; k++) score += ABS(src[k*s->linesize+15]-src[k*s->linesize+16]); } if(mb_y>0 && fixed[mb_xy-mb_stride]){ int k; for(k=0; k<16; k++) score += ABS(src[k-s->linesize ]-src[k ]); } if(mb_y+1<mb_height && fixed[mb_xy+mb_stride]){ int k; for(k=0; k<16; k++) score += ABS(src[k+s->linesize*15]-src[k+s->linesize*16]); } if(score <= best_score){ // <= will favor the last MV best_score= score; best_pred= j; } } score_sum+= best_score; //FIXME no need to set s->motion_val[mot_index][0] explicit s->motion_val[mot_index][0]= s->mv[0][0][0]= mv_predictor[best_pred][0]; s->motion_val[mot_index][1]= s->mv[0][0][1]= mv_predictor[best_pred][1]; MPV_decode_mb(s, s->block); if(s->mv[0][0][0] != prev_x || s->mv[0][0][1] != prev_y){ fixed[mb_xy]=MV_CHANGED; changed++; }else fixed[mb_xy]=MV_UNCHANGED; } } // printf(".%d/%d", changed, score_sum); fflush(stdout); } if(none_left) return; for(i=0; i<s->mb_num; i++){ int mb_xy= s->mb_index2xy[i]; if(fixed[mb_xy]) fixed[mb_xy]=MV_FROZEN; } // printf(":"); fflush(stdout); } } static int is_intra_more_likely(MpegEncContext *s){ int is_intra_likely, i, j, undamaged_count, skip_amount, mb_x, mb_y; if(s->last_picture_ptr==NULL) return 1; //no previous frame available -> use spatial prediction undamaged_count=0; for(i=0; i<s->mb_num; i++){ const int mb_xy= s->mb_index2xy[i]; const int error= s->error_status_table[mb_xy]; if(!((error&DC_ERROR) && (error&MV_ERROR))) undamaged_count++; } if(undamaged_count < 5) return 0; //allmost all MBs damaged -> use temporal prediction skip_amount= FFMAX(undamaged_count/50, 1); //check only upto 50 MBs is_intra_likely=0; j=0; for(mb_y= 0; mb_y<s->mb_height-1; mb_y++){ for(mb_x= 0; mb_x<s->mb_width; mb_x++){ int error; const int mb_xy= mb_x + mb_y*s->mb_stride; error= s->error_status_table[mb_xy]; if((error&DC_ERROR) && (error&MV_ERROR)) continue; //skip damaged j++; if((j%skip_amount) != 0) continue; //skip a few to speed things up if(s->pict_type==I_TYPE){ uint8_t *mb_ptr = s->current_picture.data[0] + mb_x*16 + mb_y*16*s->linesize; uint8_t *last_mb_ptr= s->last_picture.data [0] + mb_x*16 + mb_y*16*s->linesize; is_intra_likely += s->dsp.pix_abs16x16(last_mb_ptr, mb_ptr , s->linesize); is_intra_likely -= s->dsp.pix_abs16x16(last_mb_ptr, last_mb_ptr+s->linesize*16, s->linesize); }else{ if(IS_INTRA(s->current_picture.mb_type[mb_xy])) is_intra_likely++; else is_intra_likely--; } } } //printf("is_intra_likely: %d type:%d\n", is_intra_likely, s->pict_type); return is_intra_likely > 0; } void ff_er_frame_start(MpegEncContext *s){ if(!s->error_resilience) return; memset(s->error_status_table, MV_ERROR|AC_ERROR|DC_ERROR|VP_START|AC_END|DC_END|MV_END, s->mb_stride*s->mb_height*sizeof(uint8_t)); s->error_count= 3*s->mb_num; } /** * adds a slice. * @param endx x component of the last macroblock, can be -1 for the last of the previous line * @param status the status at the end (MV_END, AC_ERROR, ...), it is assumed that no earlier end or * error of the same type occured */ void ff_er_add_slice(MpegEncContext *s, int startx, int starty, int endx, int endy, int status){ const int start_i= clip(startx + starty * s->mb_width , 0, s->mb_num-1); const int end_i = clip(endx + endy * s->mb_width , 0, s->mb_num); const int start_xy= s->mb_index2xy[start_i]; const int end_xy = s->mb_index2xy[end_i]; int mask= -1; if(!s->error_resilience) return; mask &= ~VP_START; if(status & (AC_ERROR|AC_END)){ mask &= ~(AC_ERROR|AC_END); s->error_count -= end_i - start_i + 1; } if(status & (DC_ERROR|DC_END)){ mask &= ~(DC_ERROR|DC_END); s->error_count -= end_i - start_i + 1; } if(status & (MV_ERROR|MV_END)){ mask &= ~(MV_ERROR|MV_END); s->error_count -= end_i - start_i + 1; } if(status & (AC_ERROR|DC_ERROR|MV_ERROR)) s->error_count= INT_MAX; if(mask == ~0x7F){ memset(&s->error_status_table[start_xy], 0, (end_xy - start_xy) * sizeof(uint8_t)); }else{ int i; for(i=start_xy; i<end_xy; i++){ s->error_status_table[ i ] &= mask; } } if(end_i == s->mb_num) s->error_count= INT_MAX; else{ s->error_status_table[end_xy] &= mask; s->error_status_table[end_xy] |= status; } s->error_status_table[start_xy] |= VP_START; if(start_xy > 0){ int prev_status= s->error_status_table[ s->mb_index2xy[start_i - 1] ]; prev_status &= ~ VP_START; if(prev_status != (MV_END|DC_END|AC_END)) s->error_count= INT_MAX; } } void ff_er_frame_end(MpegEncContext *s){ int i, mb_x, mb_y, error, error_type; int distance; int threshold_part[4]= {100,100,100}; int threshold= 50; int is_intra_likely; if(!s->error_resilience || s->error_count==0) return; fprintf(stderr, "concealing errors\n"); if(s->motion_val == NULL){ int size = (2 * s->mb_width + 2) * (2 * s->mb_height + 2); fprintf(stderr, "Warning MVs not available\n"); s->motion_val= av_mallocz(size * 2 * sizeof(int16_t)); } if(s->avctx->debug&FF_DEBUG_ER){ for(mb_y=0; mb_y<s->mb_height; mb_y++){ for(mb_x=0; mb_x<s->mb_width; mb_x++){ int status= s->error_status_table[mb_x + mb_y*s->mb_stride]; printf("%2X ", status); } printf("\n"); } } #if 1 /* handle overlapping slices */ for(error_type=1; error_type<=3; error_type++){ int end_ok=0; for(i=s->mb_num-1; i>=0; i--){ const int mb_xy= s->mb_index2xy[i]; int error= s->error_status_table[mb_xy]; if(error&(1<<error_type)) end_ok=1; if(error&(8<<error_type)) end_ok=1; if(!end_ok) s->error_status_table[mb_xy]|= 1<<error_type; if(error&VP_START) end_ok=0; } } #endif #if 1 /* handle slices with partitions of different length */ if(s->partitioned_frame){ int end_ok=0; for(i=s->mb_num-1; i>=0; i--){ const int mb_xy= s->mb_index2xy[i]; int error= s->error_status_table[mb_xy]; if(error&AC_END) end_ok=0; if((error&MV_END) || (error&DC_END) || (error&AC_ERROR)) end_ok=1; if(!end_ok) s->error_status_table[mb_xy]|= AC_ERROR; if(error&VP_START) end_ok=0; } } #endif /* handle missing slices */ if(s->error_resilience>=4){ int end_ok=1; for(i=s->mb_num-2; i>=s->mb_width+100; i--){ //FIXME +100 hack const int mb_xy= s->mb_index2xy[i]; int error1= s->error_status_table[mb_xy ]; int error2= s->error_status_table[s->mb_index2xy[i+1]]; if(error1&VP_START) end_ok=1; if( error2==(VP_START|DC_ERROR|AC_ERROR|MV_ERROR|AC_END|DC_END|MV_END) && error1!=(VP_START|DC_ERROR|AC_ERROR|MV_ERROR|AC_END|DC_END|MV_END) && ((error1&AC_END) || (error1&DC_END) || (error1&MV_END))){ //end & uninited end_ok=0; } if(!end_ok) s->error_status_table[mb_xy]|= DC_ERROR|AC_ERROR|MV_ERROR; } } #if 1 /* backward mark errors */ distance=9999999; for(error_type=1; error_type<=3; error_type++){ for(i=s->mb_num-1; i>=0; i--){ const int mb_xy= s->mb_index2xy[i]; int error= s->error_status_table[mb_xy]; if(!s->mbskip_table[mb_xy]) //FIXME partition specific distance++; if(error&(1<<error_type)) distance= 0; if(s->partitioned_frame){ if(distance < threshold_part[error_type-1]) s->error_status_table[mb_xy]|= 1<<error_type; }else{ if(distance < threshold) s->error_status_table[mb_xy]|= 1<<error_type; } if(error&VP_START) distance= 9999999; } } #endif /* forward mark errors */ error=0; for(i=0; i<s->mb_num; i++){ const int mb_xy= s->mb_index2xy[i]; int old_error= s->error_status_table[mb_xy]; if(old_error&VP_START) error= old_error& (DC_ERROR|AC_ERROR|MV_ERROR); else{ error|= old_error& (DC_ERROR|AC_ERROR|MV_ERROR); s->error_status_table[mb_xy]|= error; } } #if 1 /* handle not partitioned case */ if(!s->partitioned_frame){ for(i=0; i<s->mb_num; i++){ const int mb_xy= s->mb_index2xy[i]; error= s->error_status_table[mb_xy]; if(error&(AC_ERROR|DC_ERROR|MV_ERROR)) error|= AC_ERROR|DC_ERROR|MV_ERROR; s->error_status_table[mb_xy]= error; } } #endif is_intra_likely= is_intra_more_likely(s); /* set unknown mb-type to most likely */ for(i=0; i<s->mb_num; i++){ const int mb_xy= s->mb_index2xy[i]; error= s->error_status_table[mb_xy]; if(!((error&DC_ERROR) && (error&MV_ERROR))) continue; if(is_intra_likely) s->current_picture.mb_type[mb_xy]= MB_TYPE_INTRA4x4; else s->current_picture.mb_type[mb_xy]= MB_TYPE_16x16 | MB_TYPE_L0; } /* handle inter blocks with damaged AC */ for(mb_y=0; mb_y<s->mb_height; mb_y++){ for(mb_x=0; mb_x<s->mb_width; mb_x++){ const int mb_xy= mb_x + mb_y * s->mb_stride; const int mb_type= s->current_picture.mb_type[mb_xy]; error= s->error_status_table[mb_xy]; if(IS_INTRA(mb_type)) continue; //intra if(error&MV_ERROR) continue; //inter with damaged MV if(!(error&AC_ERROR)) continue; //undamaged inter s->mv_dir = MV_DIR_FORWARD; s->mb_intra=0; s->mb_skiped=0; if(IS_8X8(mb_type)){ int mb_index= mb_x*2+1 + (mb_y*2+1)*s->block_wrap[0]; int j; s->mv_type = MV_TYPE_8X8; for(j=0; j<4; j++){ s->mv[0][j][0] = s->motion_val[ mb_index + (j&1) + (j>>1)*s->block_wrap[0] ][0]; s->mv[0][j][1] = s->motion_val[ mb_index + (j&1) + (j>>1)*s->block_wrap[0] ][1]; } }else{ s->mv_type = MV_TYPE_16X16; s->mv[0][0][0] = s->motion_val[ mb_x*2+1 + (mb_y*2+1)*s->block_wrap[0] ][0]; s->mv[0][0][1] = s->motion_val[ mb_x*2+1 + (mb_y*2+1)*s->block_wrap[0] ][1]; } s->dsp.clear_blocks(s->block[0]); s->mb_x= mb_x; s->mb_y= mb_y; MPV_decode_mb(s, s->block); } } /* guess MVs */ if(s->pict_type==B_TYPE){ for(mb_y=0; mb_y<s->mb_height; mb_y++){ for(mb_x=0; mb_x<s->mb_width; mb_x++){ int xy= mb_x*2+1 + (mb_y*2+1)*s->block_wrap[0]; const int mb_xy= mb_x + mb_y * s->mb_stride; const int mb_type= s->current_picture.mb_type[mb_xy]; error= s->error_status_table[mb_xy]; if(IS_INTRA(mb_type)) continue; if(!(error&MV_ERROR)) continue; //inter with undamaged MV if(!(error&AC_ERROR)) continue; //undamaged inter s->mv_dir = MV_DIR_FORWARD|MV_DIR_BACKWARD; s->mb_intra=0; s->mv_type = MV_TYPE_16X16; s->mb_skiped=0; if(s->pp_time){ int time_pp= s->pp_time; int time_pb= s->pb_time; s->mv[0][0][0] = s->motion_val[xy][0]*time_pb/time_pp; s->mv[0][0][1] = s->motion_val[xy][1]*time_pb/time_pp; s->mv[1][0][0] = s->motion_val[xy][0]*(time_pb - time_pp)/time_pp; s->mv[1][0][1] = s->motion_val[xy][1]*(time_pb - time_pp)/time_pp; }else{ s->mv[0][0][0]= 0; s->mv[0][0][1]= 0; s->mv[1][0][0]= 0; s->mv[1][0][1]= 0; } s->dsp.clear_blocks(s->block[0]); s->mb_x= mb_x; s->mb_y= mb_y; MPV_decode_mb(s, s->block); } } }else guess_mv(s); /* fill DC for inter blocks */ for(mb_y=0; mb_y<s->mb_height; mb_y++){ for(mb_x=0; mb_x<s->mb_width; mb_x++){ int dc, dcu, dcv, y, n; int16_t *dc_ptr; uint8_t *dest_y, *dest_cb, *dest_cr; const int mb_xy= mb_x + mb_y * s->mb_stride; const int mb_type= s->current_picture.mb_type[mb_xy]; error= s->error_status_table[mb_xy]; if(IS_INTRA(mb_type) && s->partitioned_frame) continue; // if(error&MV_ERROR) continue; //inter data damaged FIXME is this good? dest_y = s->current_picture.data[0] + mb_x*16 + mb_y*16*s->linesize; dest_cb= s->current_picture.data[1] + mb_x*8 + mb_y*8 *s->uvlinesize; dest_cr= s->current_picture.data[2] + mb_x*8 + mb_y*8 *s->uvlinesize; dc_ptr= &s->dc_val[0][mb_x*2+1 + (mb_y*2+1)*(s->mb_width*2+2)]; for(n=0; n<4; n++){ dc=0; for(y=0; y<8; y++){ int x; for(x=0; x<8; x++){ dc+= dest_y[x + (n&1)*8 + (y + (n>>1)*8)*s->linesize]; } } dc_ptr[(n&1) + (n>>1)*(s->mb_width*2+2)]= (dc+4)>>3; } dcu=dcv=0; for(y=0; y<8; y++){ int x; for(x=0; x<8; x++){ dcu+=dest_cb[x + y*(s->uvlinesize)]; dcv+=dest_cr[x + y*(s->uvlinesize)]; } } s->dc_val[1][mb_x+1 + (mb_y+1)*(s->mb_width+2)]= (dcu+4)>>3; s->dc_val[2][mb_x+1 + (mb_y+1)*(s->mb_width+2)]= (dcv+4)>>3; } } #if 1 /* guess DC for damaged blocks */ guess_dc(s, s->dc_val[0] + s->mb_width*2+3, s->mb_width*2, s->mb_height*2, s->mb_width*2+2, 1); guess_dc(s, s->dc_val[1] + s->mb_width +3, s->mb_width , s->mb_height , s->mb_width +2, 0); guess_dc(s, s->dc_val[2] + s->mb_width +3, s->mb_width , s->mb_height , s->mb_width +2, 0); #endif /* filter luma DC */ filter181(s->dc_val[0] + s->mb_width*2+3, s->mb_width*2, s->mb_height*2, s->mb_width*2+2); #if 1 /* render DC only intra */ for(mb_y=0; mb_y<s->mb_height; mb_y++){ for(mb_x=0; mb_x<s->mb_width; mb_x++){ uint8_t *dest_y, *dest_cb, *dest_cr; const int mb_xy= mb_x + mb_y * s->mb_stride; const int mb_type= s->current_picture.mb_type[mb_xy]; error= s->error_status_table[mb_xy]; if(IS_INTER(mb_type)) continue; if(!(error&AC_ERROR)) continue; //undamaged dest_y = s->current_picture.data[0] + mb_x*16 + mb_y*16*s->linesize; dest_cb= s->current_picture.data[1] + mb_x*8 + mb_y*8 *s->uvlinesize; dest_cr= s->current_picture.data[2] + mb_x*8 + mb_y*8 *s->uvlinesize; put_dc(s, dest_y, dest_cb, dest_cr, mb_x, mb_y); } } #endif if(s->avctx->error_concealment&FF_EC_DEBLOCK){ /* filter horizontal block boundaries */ h_block_filter(s, s->current_picture.data[0], s->mb_width*2, s->mb_height*2, s->linesize , 1); h_block_filter(s, s->current_picture.data[1], s->mb_width , s->mb_height , s->uvlinesize, 0); h_block_filter(s, s->current_picture.data[2], s->mb_width , s->mb_height , s->uvlinesize, 0); /* filter vertical block boundaries */ v_block_filter(s, s->current_picture.data[0], s->mb_width*2, s->mb_height*2, s->linesize , 1); v_block_filter(s, s->current_picture.data[1], s->mb_width , s->mb_height , s->uvlinesize, 0); v_block_filter(s, s->current_picture.data[2], s->mb_width , s->mb_height , s->uvlinesize, 0); } /* clean a few tables */ for(i=0; i<s->mb_num; i++){ const int mb_xy= s->mb_index2xy[i]; int error= s->error_status_table[mb_xy]; if(s->pict_type!=B_TYPE && (error&(DC_ERROR|MV_ERROR|AC_ERROR))){ s->mbskip_table[mb_xy]=0; } s->mbintra_table[mb_xy]=1; } }