+++ /dev/null
-/*
- * 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"
-
-static void decode_mb(MpegEncContext *s){
- s->dest[0] = s->current_picture.data[0] + (s->mb_y * 16* s->linesize ) + s->mb_x * 16;
- s->dest[1] = s->current_picture.data[1] + (s->mb_y * 8 * s->uvlinesize) + s->mb_x * 8;
- s->dest[2] = s->current_picture.data[2] + (s->mb_y * 8 * s->uvlinesize) + s->mb_x * 8;
-
- MPV_decode_mb(s, s->block);
-}
-
-/**
- * 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;
- decode_mb(s);
- }
- }
- 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];
-
- decode_mb(s);
-
- 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];
-
- decode_mb(s);
-
-
- 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;
- decode_mb(s);
- }
- }
-
- /* 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;
- decode_mb(s);
- }
- }
- }else
- guess_mv(s);
-
-#ifdef HAVE_XVMC
- /* the filters below are not XvMC compatible, skip them */
- if(s->avctx->xvmc_acceleration) goto ec_clean;
-#endif
- /* 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);
- }
-
-#ifdef HAVE_XVMC
-ec_clean:
-#endif
- /* 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;
- }
-}
projects / synfig.git / blobdiff