1040 lines
39 KiB
C
1040 lines
39 KiB
C
/*
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* Error resilience / concealment
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*
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* Copyright (c) 2002-2004 Michael Niedermayer <michaelni@gmx.at>
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*
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* This file is part of FFmpeg.
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*
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* FFmpeg is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* FFmpeg is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with FFmpeg; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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/**
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* @file error_resilience.c
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* Error resilience / concealment.
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*/
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#include <limits.h>
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#include "avcodec.h"
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#include "dsputil.h"
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#include "mpegvideo.h"
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static void decode_mb(MpegEncContext *s){
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s->dest[0] = s->current_picture.data[0] + (s->mb_y * 16* s->linesize ) + s->mb_x * 16;
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s->dest[1] = s->current_picture.data[1] + (s->mb_y * 8 * s->uvlinesize) + s->mb_x * 8;
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s->dest[2] = s->current_picture.data[2] + (s->mb_y * 8 * s->uvlinesize) + s->mb_x * 8;
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MPV_decode_mb(s, s->block);
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}
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/**
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* replaces the current MB with a flat dc only version.
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*/
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static void put_dc(MpegEncContext *s, uint8_t *dest_y, uint8_t *dest_cb, uint8_t *dest_cr, int mb_x, int mb_y)
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{
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int dc, dcu, dcv, y, i;
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for(i=0; i<4; i++){
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dc= s->dc_val[0][mb_x*2 + (i&1) + (mb_y*2 + (i>>1))*s->b8_stride];
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if(dc<0) dc=0;
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else if(dc>2040) dc=2040;
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for(y=0; y<8; y++){
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int x;
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for(x=0; x<8; x++){
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dest_y[x + (i&1)*8 + (y + (i>>1)*8)*s->linesize]= dc/8;
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}
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}
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}
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dcu = s->dc_val[1][mb_x + mb_y*s->mb_stride];
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dcv = s->dc_val[2][mb_x + mb_y*s->mb_stride];
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if (dcu<0 ) dcu=0;
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else if(dcu>2040) dcu=2040;
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if (dcv<0 ) dcv=0;
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else if(dcv>2040) dcv=2040;
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for(y=0; y<8; y++){
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int x;
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for(x=0; x<8; x++){
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dest_cb[x + y*(s->uvlinesize)]= dcu/8;
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dest_cr[x + y*(s->uvlinesize)]= dcv/8;
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}
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}
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}
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static void filter181(int16_t *data, int width, int height, int stride){
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int x,y;
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/* horizontal filter */
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for(y=1; y<height-1; y++){
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int prev_dc= data[0 + y*stride];
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for(x=1; x<width-1; x++){
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int dc;
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dc= - prev_dc
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+ data[x + y*stride]*8
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- data[x + 1 + y*stride];
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dc= (dc*10923 + 32768)>>16;
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prev_dc= data[x + y*stride];
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data[x + y*stride]= dc;
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}
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}
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/* vertical filter */
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for(x=1; x<width-1; x++){
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int prev_dc= data[x];
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for(y=1; y<height-1; y++){
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int dc;
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dc= - prev_dc
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+ data[x + y *stride]*8
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- data[x + (y+1)*stride];
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dc= (dc*10923 + 32768)>>16;
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prev_dc= data[x + y*stride];
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data[x + y*stride]= dc;
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}
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}
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}
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/**
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* guess the dc of blocks which do not have an undamaged dc
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* @param w width in 8 pixel blocks
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* @param h height in 8 pixel blocks
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*/
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static void guess_dc(MpegEncContext *s, int16_t *dc, int w, int h, int stride, int is_luma){
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int b_x, b_y;
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for(b_y=0; b_y<h; b_y++){
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for(b_x=0; b_x<w; b_x++){
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int color[4]={1024,1024,1024,1024};
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int distance[4]={9999,9999,9999,9999};
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int mb_index, error, j;
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int64_t guess, weight_sum;
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mb_index= (b_x>>is_luma) + (b_y>>is_luma)*s->mb_stride;
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error= s->error_status_table[mb_index];
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if(IS_INTER(s->current_picture.mb_type[mb_index])) continue; //inter
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if(!(error&DC_ERROR)) continue; //dc-ok
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/* right block */
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for(j=b_x+1; j<w; j++){
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int mb_index_j= (j>>is_luma) + (b_y>>is_luma)*s->mb_stride;
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int error_j= s->error_status_table[mb_index_j];
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int intra_j= IS_INTRA(s->current_picture.mb_type[mb_index_j]);
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if(intra_j==0 || !(error_j&DC_ERROR)){
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color[0]= dc[j + b_y*stride];
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distance[0]= j-b_x;
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break;
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}
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}
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/* left block */
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for(j=b_x-1; j>=0; j--){
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int mb_index_j= (j>>is_luma) + (b_y>>is_luma)*s->mb_stride;
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int error_j= s->error_status_table[mb_index_j];
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int intra_j= IS_INTRA(s->current_picture.mb_type[mb_index_j]);
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if(intra_j==0 || !(error_j&DC_ERROR)){
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color[1]= dc[j + b_y*stride];
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distance[1]= b_x-j;
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break;
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}
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}
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/* bottom block */
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for(j=b_y+1; j<h; j++){
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int mb_index_j= (b_x>>is_luma) + (j>>is_luma)*s->mb_stride;
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int error_j= s->error_status_table[mb_index_j];
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int intra_j= IS_INTRA(s->current_picture.mb_type[mb_index_j]);
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if(intra_j==0 || !(error_j&DC_ERROR)){
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color[2]= dc[b_x + j*stride];
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distance[2]= j-b_y;
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break;
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}
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}
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/* top block */
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for(j=b_y-1; j>=0; j--){
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int mb_index_j= (b_x>>is_luma) + (j>>is_luma)*s->mb_stride;
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int error_j= s->error_status_table[mb_index_j];
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int intra_j= IS_INTRA(s->current_picture.mb_type[mb_index_j]);
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if(intra_j==0 || !(error_j&DC_ERROR)){
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color[3]= dc[b_x + j*stride];
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distance[3]= b_y-j;
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break;
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}
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}
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weight_sum=0;
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guess=0;
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for(j=0; j<4; j++){
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int64_t weight= 256*256*256*16/distance[j];
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guess+= weight*(int64_t)color[j];
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weight_sum+= weight;
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}
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guess= (guess + weight_sum/2) / weight_sum;
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dc[b_x + b_y*stride]= guess;
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}
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}
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}
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/**
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* simple horizontal deblocking filter used for error resilience
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* @param w width in 8 pixel blocks
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* @param h height in 8 pixel blocks
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*/
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static void h_block_filter(MpegEncContext *s, uint8_t *dst, int w, int h, int stride, int is_luma){
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int b_x, b_y;
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uint8_t *cm = ff_cropTbl + MAX_NEG_CROP;
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for(b_y=0; b_y<h; b_y++){
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for(b_x=0; b_x<w-1; b_x++){
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int y;
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int left_status = s->error_status_table[( b_x >>is_luma) + (b_y>>is_luma)*s->mb_stride];
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int right_status= s->error_status_table[((b_x+1)>>is_luma) + (b_y>>is_luma)*s->mb_stride];
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int left_intra= IS_INTRA(s->current_picture.mb_type [( b_x >>is_luma) + (b_y>>is_luma)*s->mb_stride]);
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int right_intra= IS_INTRA(s->current_picture.mb_type [((b_x+1)>>is_luma) + (b_y>>is_luma)*s->mb_stride]);
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int left_damage = left_status&(DC_ERROR|AC_ERROR|MV_ERROR);
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int right_damage= right_status&(DC_ERROR|AC_ERROR|MV_ERROR);
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int offset= b_x*8 + b_y*stride*8;
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int16_t *left_mv= s->current_picture.motion_val[0][s->b8_stride*(b_y<<(1-is_luma)) + ( b_x <<(1-is_luma))];
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int16_t *right_mv= s->current_picture.motion_val[0][s->b8_stride*(b_y<<(1-is_luma)) + ((b_x+1)<<(1-is_luma))];
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if(!(left_damage||right_damage)) continue; // both undamaged
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if( (!left_intra) && (!right_intra)
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&& FFABS(left_mv[0]-right_mv[0]) + FFABS(left_mv[1]+right_mv[1]) < 2) continue;
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for(y=0; y<8; y++){
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int a,b,c,d;
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a= dst[offset + 7 + y*stride] - dst[offset + 6 + y*stride];
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b= dst[offset + 8 + y*stride] - dst[offset + 7 + y*stride];
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c= dst[offset + 9 + y*stride] - dst[offset + 8 + y*stride];
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d= FFABS(b) - ((FFABS(a) + FFABS(c) + 1)>>1);
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d= FFMAX(d, 0);
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if(b<0) d= -d;
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if(d==0) continue;
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if(!(left_damage && right_damage))
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d= d*16/9;
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if(left_damage){
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dst[offset + 7 + y*stride] = cm[dst[offset + 7 + y*stride] + ((d*7)>>4)];
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dst[offset + 6 + y*stride] = cm[dst[offset + 6 + y*stride] + ((d*5)>>4)];
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dst[offset + 5 + y*stride] = cm[dst[offset + 5 + y*stride] + ((d*3)>>4)];
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dst[offset + 4 + y*stride] = cm[dst[offset + 4 + y*stride] + ((d*1)>>4)];
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}
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if(right_damage){
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dst[offset + 8 + y*stride] = cm[dst[offset + 8 + y*stride] - ((d*7)>>4)];
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dst[offset + 9 + y*stride] = cm[dst[offset + 9 + y*stride] - ((d*5)>>4)];
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dst[offset + 10+ y*stride] = cm[dst[offset +10 + y*stride] - ((d*3)>>4)];
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dst[offset + 11+ y*stride] = cm[dst[offset +11 + y*stride] - ((d*1)>>4)];
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}
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}
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}
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}
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}
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/**
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* simple vertical deblocking filter used for error resilience
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* @param w width in 8 pixel blocks
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* @param h height in 8 pixel blocks
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*/
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static void v_block_filter(MpegEncContext *s, uint8_t *dst, int w, int h, int stride, int is_luma){
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int b_x, b_y;
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uint8_t *cm = ff_cropTbl + MAX_NEG_CROP;
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for(b_y=0; b_y<h-1; b_y++){
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for(b_x=0; b_x<w; b_x++){
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int x;
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int top_status = s->error_status_table[(b_x>>is_luma) + ( b_y >>is_luma)*s->mb_stride];
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int bottom_status= s->error_status_table[(b_x>>is_luma) + ((b_y+1)>>is_luma)*s->mb_stride];
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int top_intra= IS_INTRA(s->current_picture.mb_type [(b_x>>is_luma) + ( b_y >>is_luma)*s->mb_stride]);
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int bottom_intra= IS_INTRA(s->current_picture.mb_type [(b_x>>is_luma) + ((b_y+1)>>is_luma)*s->mb_stride]);
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int top_damage = top_status&(DC_ERROR|AC_ERROR|MV_ERROR);
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int bottom_damage= bottom_status&(DC_ERROR|AC_ERROR|MV_ERROR);
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int offset= b_x*8 + b_y*stride*8;
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int16_t *top_mv= s->current_picture.motion_val[0][s->b8_stride*( b_y <<(1-is_luma)) + (b_x<<(1-is_luma))];
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int16_t *bottom_mv= s->current_picture.motion_val[0][s->b8_stride*((b_y+1)<<(1-is_luma)) + (b_x<<(1-is_luma))];
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if(!(top_damage||bottom_damage)) continue; // both undamaged
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if( (!top_intra) && (!bottom_intra)
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&& FFABS(top_mv[0]-bottom_mv[0]) + FFABS(top_mv[1]+bottom_mv[1]) < 2) continue;
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for(x=0; x<8; x++){
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int a,b,c,d;
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a= dst[offset + x + 7*stride] - dst[offset + x + 6*stride];
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b= dst[offset + x + 8*stride] - dst[offset + x + 7*stride];
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c= dst[offset + x + 9*stride] - dst[offset + x + 8*stride];
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d= FFABS(b) - ((FFABS(a) + FFABS(c)+1)>>1);
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d= FFMAX(d, 0);
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if(b<0) d= -d;
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if(d==0) continue;
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if(!(top_damage && bottom_damage))
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d= d*16/9;
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if(top_damage){
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dst[offset + x + 7*stride] = cm[dst[offset + x + 7*stride] + ((d*7)>>4)];
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dst[offset + x + 6*stride] = cm[dst[offset + x + 6*stride] + ((d*5)>>4)];
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dst[offset + x + 5*stride] = cm[dst[offset + x + 5*stride] + ((d*3)>>4)];
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dst[offset + x + 4*stride] = cm[dst[offset + x + 4*stride] + ((d*1)>>4)];
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}
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if(bottom_damage){
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dst[offset + x + 8*stride] = cm[dst[offset + x + 8*stride] - ((d*7)>>4)];
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dst[offset + x + 9*stride] = cm[dst[offset + x + 9*stride] - ((d*5)>>4)];
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dst[offset + x + 10*stride] = cm[dst[offset + x + 10*stride] - ((d*3)>>4)];
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dst[offset + x + 11*stride] = cm[dst[offset + x + 11*stride] - ((d*1)>>4)];
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}
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}
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}
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}
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}
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static void guess_mv(MpegEncContext *s){
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uint8_t fixed[s->mb_stride * s->mb_height];
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#define MV_FROZEN 3
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#define MV_CHANGED 2
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#define MV_UNCHANGED 1
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const int mb_stride = s->mb_stride;
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const int mb_width = s->mb_width;
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const int mb_height= s->mb_height;
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int i, depth, num_avail;
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int mb_x, mb_y;
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num_avail=0;
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for(i=0; i<s->mb_num; i++){
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const int mb_xy= s->mb_index2xy[ i ];
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int f=0;
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int error= s->error_status_table[mb_xy];
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if(IS_INTRA(s->current_picture.mb_type[mb_xy])) f=MV_FROZEN; //intra //FIXME check
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if(!(error&MV_ERROR)) f=MV_FROZEN; //inter with undamaged MV
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fixed[mb_xy]= f;
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if(f==MV_FROZEN)
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num_avail++;
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}
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if((!(s->avctx->error_concealment&FF_EC_GUESS_MVS)) || num_avail <= mb_width/2){
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for(mb_y=0; mb_y<s->mb_height; mb_y++){
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for(mb_x=0; mb_x<s->mb_width; mb_x++){
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const int mb_xy= mb_x + mb_y*s->mb_stride;
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if(IS_INTRA(s->current_picture.mb_type[mb_xy])) continue;
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if(!(s->error_status_table[mb_xy]&MV_ERROR)) continue;
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s->mv_dir = MV_DIR_FORWARD;
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s->mb_intra=0;
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s->mv_type = MV_TYPE_16X16;
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s->mb_skipped=0;
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s->dsp.clear_blocks(s->block[0]);
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s->mb_x= mb_x;
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s->mb_y= mb_y;
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s->mv[0][0][0]= 0;
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s->mv[0][0][1]= 0;
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decode_mb(s);
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}
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}
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return;
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}
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for(depth=0;; depth++){
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int changed, pass, none_left;
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none_left=1;
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changed=1;
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for(pass=0; (changed || pass<2) && pass<10; pass++){
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int mb_x, mb_y;
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int score_sum=0;
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changed=0;
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for(mb_y=0; mb_y<s->mb_height; mb_y++){
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for(mb_x=0; mb_x<s->mb_width; mb_x++){
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const int mb_xy= mb_x + mb_y*s->mb_stride;
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int mv_predictor[8][2]={{0}};
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int pred_count=0;
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int j;
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int best_score=256*256*256*64;
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int best_pred=0;
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const int mot_stride= s->b8_stride;
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const int mot_index= mb_x*2 + mb_y*2*mot_stride;
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int prev_x= s->current_picture.motion_val[0][mot_index][0];
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int prev_y= s->current_picture.motion_val[0][mot_index][1];
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if((mb_x^mb_y^pass)&1) continue;
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if(fixed[mb_xy]==MV_FROZEN) continue;
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assert(!IS_INTRA(s->current_picture.mb_type[mb_xy]));
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assert(s->last_picture_ptr && s->last_picture_ptr->data[0]);
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j=0;
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if(mb_x>0 && fixed[mb_xy-1 ]==MV_FROZEN) j=1;
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if(mb_x+1<mb_width && fixed[mb_xy+1 ]==MV_FROZEN) j=1;
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if(mb_y>0 && fixed[mb_xy-mb_stride]==MV_FROZEN) j=1;
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if(mb_y+1<mb_height && fixed[mb_xy+mb_stride]==MV_FROZEN) j=1;
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if(j==0) continue;
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j=0;
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if(mb_x>0 && fixed[mb_xy-1 ]==MV_CHANGED) j=1;
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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->current_picture.motion_val[0][mot_index - 2][0];
|
|
mv_predictor[pred_count][1]= s->current_picture.motion_val[0][mot_index - 2][1];
|
|
pred_count++;
|
|
}
|
|
if(mb_x+1<mb_width && fixed[mb_xy+1]){
|
|
mv_predictor[pred_count][0]= s->current_picture.motion_val[0][mot_index + 2][0];
|
|
mv_predictor[pred_count][1]= s->current_picture.motion_val[0][mot_index + 2][1];
|
|
pred_count++;
|
|
}
|
|
if(mb_y>0 && fixed[mb_xy-mb_stride]){
|
|
mv_predictor[pred_count][0]= s->current_picture.motion_val[0][mot_index - mot_stride*2][0];
|
|
mv_predictor[pred_count][1]= s->current_picture.motion_val[0][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->current_picture.motion_val[0][mot_index + mot_stride*2][0];
|
|
mv_predictor[pred_count][1]= s->current_picture.motion_val[0][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->current_picture.motion_val[0][mot_index][0];
|
|
mv_predictor[pred_count][1]= s->current_picture.motion_val[0][mot_index][1];
|
|
pred_count++;
|
|
|
|
s->mv_dir = MV_DIR_FORWARD;
|
|
s->mb_intra=0;
|
|
s->mv_type = MV_TYPE_16X16;
|
|
s->mb_skipped=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->current_picture.motion_val[0][mot_index][0]= s->mv[0][0][0]= mv_predictor[j][0];
|
|
s->current_picture.motion_val[0][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 += FFABS(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 += FFABS(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 += FFABS(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 += FFABS(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->current_picture.motion_val[0][mot_index][0] explicit
|
|
s->current_picture.motion_val[0][mot_index][0]= s->mv[0][0][0]= mv_predictor[best_pred][0];
|
|
s->current_picture.motion_val[0][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 || !s->last_picture_ptr->data[0]) 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; //almost all MBs damaged -> use temporal prediction
|
|
|
|
#ifdef CONFIG_XVMC
|
|
//prevent dsp.sad() check, that requires access to the image
|
|
if(s->avctx->xvmc_acceleration && s->pict_type==FF_I_TYPE) return 1;
|
|
#endif
|
|
|
|
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==FF_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.sad[0](NULL, last_mb_ptr, mb_ptr , s->linesize, 16);
|
|
is_intra_likely -= s->dsp.sad[0](NULL, last_mb_ptr, last_mb_ptr+s->linesize*16, s->linesize, 16);
|
|
}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_recognition) 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 occurred
|
|
*/
|
|
void ff_er_add_slice(MpegEncContext *s, int startx, int starty, int endx, int endy, int status){
|
|
const int start_i= av_clip(startx + starty * s->mb_width , 0, s->mb_num-1);
|
|
const int end_i = av_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(start_i > end_i || start_xy > end_xy){
|
|
av_log(s->avctx, AV_LOG_ERROR, "internal error, slice end before start\n");
|
|
return;
|
|
}
|
|
|
|
if(!s->error_recognition) 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 && s->avctx->thread_count <= 1 && s->avctx->skip_top*s->mb_width < start_i){
|
|
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, dc_error, mv_error, ac_error;
|
|
int distance;
|
|
int threshold_part[4]= {100,100,100};
|
|
int threshold= 50;
|
|
int is_intra_likely;
|
|
int size = s->b8_stride * 2 * s->mb_height;
|
|
Picture *pic= s->current_picture_ptr;
|
|
|
|
if(!s->error_recognition || s->error_count==0 || s->avctx->lowres ||
|
|
s->error_count==3*s->mb_width*(s->avctx->skip_top + s->avctx->skip_bottom)) return;
|
|
|
|
if(s->current_picture.motion_val[0] == NULL){
|
|
av_log(s->avctx, AV_LOG_ERROR, "Warning MVs not available\n");
|
|
|
|
for(i=0; i<2; i++){
|
|
pic->ref_index[i]= av_mallocz(size * sizeof(uint8_t));
|
|
pic->motion_val_base[i]= av_mallocz((size+4) * 2 * sizeof(uint16_t));
|
|
pic->motion_val[i]= pic->motion_val_base[i]+4;
|
|
}
|
|
pic->motion_subsample_log2= 3;
|
|
s->current_picture= *s->current_picture_ptr;
|
|
}
|
|
|
|
for(i=0; i<2; i++){
|
|
if(pic->ref_index[i])
|
|
memset(pic->ref_index[i], 0, size * sizeof(uint8_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];
|
|
|
|
av_log(s->avctx, AV_LOG_DEBUG, "%2X ", status);
|
|
}
|
|
av_log(s->avctx, AV_LOG_DEBUG, "\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_recognition>=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 & uninit
|
|
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
|
|
|
|
dc_error= ac_error= mv_error=0;
|
|
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) dc_error ++;
|
|
if(error&AC_ERROR) ac_error ++;
|
|
if(error&MV_ERROR) mv_error ++;
|
|
}
|
|
av_log(s->avctx, AV_LOG_INFO, "concealing %d DC, %d AC, %d MV errors\n", dc_error, ac_error, mv_error);
|
|
|
|
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_skipped=0;
|
|
if(IS_8X8(mb_type)){
|
|
int mb_index= mb_x*2 + mb_y*2*s->b8_stride;
|
|
int j;
|
|
s->mv_type = MV_TYPE_8X8;
|
|
for(j=0; j<4; j++){
|
|
s->mv[0][j][0] = s->current_picture.motion_val[0][ mb_index + (j&1) + (j>>1)*s->b8_stride ][0];
|
|
s->mv[0][j][1] = s->current_picture.motion_val[0][ mb_index + (j&1) + (j>>1)*s->b8_stride ][1];
|
|
}
|
|
}else{
|
|
s->mv_type = MV_TYPE_16X16;
|
|
s->mv[0][0][0] = s->current_picture.motion_val[0][ mb_x*2 + mb_y*2*s->b8_stride ][0];
|
|
s->mv[0][0][1] = s->current_picture.motion_val[0][ mb_x*2 + mb_y*2*s->b8_stride ][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==FF_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 + mb_y*2*s->b8_stride;
|
|
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_skipped=0;
|
|
|
|
if(s->pp_time){
|
|
int time_pp= s->pp_time;
|
|
int time_pb= s->pb_time;
|
|
|
|
s->mv[0][0][0] = s->next_picture.motion_val[0][xy][0]*time_pb/time_pp;
|
|
s->mv[0][0][1] = s->next_picture.motion_val[0][xy][1]*time_pb/time_pp;
|
|
s->mv[1][0][0] = s->next_picture.motion_val[0][xy][0]*(time_pb - time_pp)/time_pp;
|
|
s->mv[1][0][1] = s->next_picture.motion_val[0][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 CONFIG_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 + mb_y*2*s->b8_stride];
|
|
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->b8_stride]= (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 + mb_y*s->mb_stride]= (dcu+4)>>3;
|
|
s->dc_val[2][mb_x + mb_y*s->mb_stride]= (dcv+4)>>3;
|
|
}
|
|
}
|
|
#if 1
|
|
/* guess DC for damaged blocks */
|
|
guess_dc(s, s->dc_val[0], s->mb_width*2, s->mb_height*2, s->b8_stride, 1);
|
|
guess_dc(s, s->dc_val[1], s->mb_width , s->mb_height , s->mb_stride, 0);
|
|
guess_dc(s, s->dc_val[2], s->mb_width , s->mb_height , s->mb_stride, 0);
|
|
#endif
|
|
/* filter luma DC */
|
|
filter181(s->dc_val[0], s->mb_width*2, s->mb_height*2, s->b8_stride);
|
|
|
|
#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 CONFIG_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!=FF_B_TYPE && (error&(DC_ERROR|MV_ERROR|AC_ERROR))){
|
|
s->mbskip_table[mb_xy]=0;
|
|
}
|
|
s->mbintra_table[mb_xy]=1;
|
|
}
|
|
}
|