mirror of
https://github.com/librempeg/librempeg
synced 2024-11-23 11:39:47 +00:00
fa618f5f49
Fixes: out of array write on x86-32
Fixes: 57825/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_MPEG2VIDEO_fuzzer-6094366187061248
Fixes: 57829/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_MPEG2VIDEO_fuzzer-4526419991724032
Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg
This reverts commit f7abe92bd7.
1356 lines
51 KiB
C
1356 lines
51 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
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* Error resilience / concealment.
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*/
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#include <limits.h>
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#include "libavutil/internal.h"
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#include "avcodec.h"
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#include "error_resilience.h"
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#include "me_cmp.h"
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#include "mpegutils.h"
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#include "mpegvideo.h"
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#include "rectangle.h"
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#include "threadframe.h"
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/**
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* @param stride the number of MVs to get to the next row
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* @param mv_step the number of MVs per row or column in a macroblock
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*/
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static void set_mv_strides(ERContext *s, ptrdiff_t *mv_step, ptrdiff_t *stride)
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{
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if (s->avctx->codec_id == AV_CODEC_ID_H264) {
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av_assert0(s->quarter_sample);
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*mv_step = 4;
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*stride = s->mb_width * 4;
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} else {
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*mv_step = 2;
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*stride = s->b8_stride;
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}
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}
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/**
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* Replace the current MB with a flat dc-only version.
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*/
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static void put_dc(ERContext *s, uint8_t *dest_y, uint8_t *dest_cb,
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uint8_t *dest_cr, int mb_x, int mb_y)
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{
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int *linesize = s->cur_pic.f->linesize;
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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)
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dc = 0;
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else if (dc > 2040)
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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) * linesize[0]] = dc / 8;
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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)
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dcu = 0;
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else if (dcu > 2040)
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dcu = 2040;
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if (dcv < 0)
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dcv = 0;
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else if (dcv > 2040)
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dcv = 2040;
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if (dest_cr)
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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 * linesize[1]] = dcu / 8;
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dest_cr[x + y * linesize[2]] = 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, ptrdiff_t stride)
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{
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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 = (av_clip(dc, INT_MIN/10923, INT_MAX/10923 - 32768) * 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 = (av_clip(dc, INT_MIN/10923, INT_MAX/10923 - 32768) * 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(ERContext *s, int16_t *dc, int w,
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int h, ptrdiff_t stride, int is_luma)
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{
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int b_x, b_y;
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int16_t (*col )[4] = av_malloc_array(stride, h*sizeof( int16_t)*4);
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uint32_t (*dist)[4] = av_malloc_array(stride, h*sizeof(uint32_t)*4);
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if(!col || !dist) {
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av_log(s->avctx, AV_LOG_ERROR, "guess_dc() is out of memory\n");
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goto fail;
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}
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for(b_y=0; b_y<h; b_y++){
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int color= 1024;
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int distance= -1;
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for(b_x=0; b_x<w; b_x++){
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int mb_index_j= (b_x>>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->cur_pic.mb_type[mb_index_j]);
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if(intra_j==0 || !(error_j&ER_DC_ERROR)){
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color= dc[b_x + b_y*stride];
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distance= b_x;
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}
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col [b_x + b_y*stride][1]= color;
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dist[b_x + b_y*stride][1]= distance >= 0 ? b_x-distance : 9999;
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}
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color= 1024;
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distance= -1;
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for(b_x=w-1; b_x>=0; b_x--){
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int mb_index_j= (b_x>>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->cur_pic.mb_type[mb_index_j]);
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if(intra_j==0 || !(error_j&ER_DC_ERROR)){
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color= dc[b_x + b_y*stride];
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distance= b_x;
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}
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col [b_x + b_y*stride][0]= color;
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dist[b_x + b_y*stride][0]= distance >= 0 ? distance-b_x : 9999;
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}
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}
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for(b_x=0; b_x<w; b_x++){
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int color= 1024;
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int distance= -1;
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for(b_y=0; b_y<h; b_y++){
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int mb_index_j= (b_x>>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->cur_pic.mb_type[mb_index_j]);
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if(intra_j==0 || !(error_j&ER_DC_ERROR)){
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color= dc[b_x + b_y*stride];
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distance= b_y;
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}
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col [b_x + b_y*stride][3]= color;
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dist[b_x + b_y*stride][3]= distance >= 0 ? b_y-distance : 9999;
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}
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color= 1024;
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distance= -1;
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for(b_y=h-1; b_y>=0; b_y--){
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int mb_index_j= (b_x>>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->cur_pic.mb_type[mb_index_j]);
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if(intra_j==0 || !(error_j&ER_DC_ERROR)){
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color= dc[b_x + b_y*stride];
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distance= b_y;
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}
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col [b_x + b_y*stride][2]= color;
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dist[b_x + b_y*stride][2]= distance >= 0 ? distance-b_y : 9999;
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}
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}
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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 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->cur_pic.mb_type[mb_index]))
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continue; // inter
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if (!(error & ER_DC_ERROR))
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continue; // dc-ok
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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 / FFMAX(dist[b_x + b_y*stride][j], 1);
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guess += weight*(int64_t)col[b_x + b_y*stride][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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fail:
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av_freep(&col);
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av_freep(&dist);
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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(ERContext *s, uint8_t *dst, int w,
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int h, ptrdiff_t stride, int is_luma)
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{
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int b_x, b_y;
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ptrdiff_t mvx_stride, mvy_stride;
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const uint8_t *cm = ff_crop_tab + MAX_NEG_CROP;
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set_mv_strides(s, &mvx_stride, &mvy_stride);
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mvx_stride >>= is_luma;
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mvy_stride *= mvx_stride;
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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->cur_pic.mb_type[( b_x >> is_luma) + (b_y >> is_luma) * s->mb_stride]);
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int right_intra = IS_INTRA(s->cur_pic.mb_type[((b_x + 1) >> is_luma) + (b_y >> is_luma) * s->mb_stride]);
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int left_damage = left_status & ER_MB_ERROR;
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int right_damage = right_status & ER_MB_ERROR;
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int offset = b_x * 8 + b_y * stride * 8;
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int16_t *left_mv = s->cur_pic.motion_val[0][mvy_stride * b_y + mvx_stride * b_x];
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int16_t *right_mv = s->cur_pic.motion_val[0][mvy_stride * b_y + mvx_stride * (b_x + 1)];
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if (!(left_damage || right_damage))
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continue; // both undamaged
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if ((!left_intra) && (!right_intra) &&
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FFABS(left_mv[0] - right_mv[0]) +
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FFABS(left_mv[1] + right_mv[1]) < 2)
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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)
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d = -d;
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if (d == 0)
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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(ERContext *s, uint8_t *dst, int w, int h,
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ptrdiff_t stride, int is_luma)
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{
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int b_x, b_y;
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ptrdiff_t mvx_stride, mvy_stride;
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const uint8_t *cm = ff_crop_tab + MAX_NEG_CROP;
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set_mv_strides(s, &mvx_stride, &mvy_stride);
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mvx_stride >>= is_luma;
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mvy_stride *= mvx_stride;
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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->cur_pic.mb_type[(b_x >> is_luma) + ( b_y >> is_luma) * s->mb_stride]);
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int bottom_intra = IS_INTRA(s->cur_pic.mb_type[(b_x >> is_luma) + ((b_y + 1) >> is_luma) * s->mb_stride]);
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int top_damage = top_status & ER_MB_ERROR;
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int bottom_damage = bottom_status & ER_MB_ERROR;
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int offset = b_x * 8 + b_y * stride * 8;
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int16_t *top_mv = s->cur_pic.motion_val[0][mvy_stride * b_y + mvx_stride * b_x];
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int16_t *bottom_mv = s->cur_pic.motion_val[0][mvy_stride * (b_y + 1) + mvx_stride * b_x];
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if (!(top_damage || bottom_damage))
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continue; // both undamaged
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if ((!top_intra) && (!bottom_intra) &&
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FFABS(top_mv[0] - bottom_mv[0]) +
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FFABS(top_mv[1] + bottom_mv[1]) < 2)
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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)
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d = -d;
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if (d == 0)
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continue;
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if (!(top_damage && bottom_damage))
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d = d * 16 / 9;
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|
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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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|
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#define MV_FROZEN 8
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#define MV_CHANGED 4
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#define MV_UNCHANGED 2
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#define MV_LISTED 1
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static av_always_inline void add_blocklist(int (*blocklist)[2], int *blocklist_length, uint8_t *fixed, int mb_x, int mb_y, int mb_xy)
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{
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if (fixed[mb_xy])
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return;
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fixed[mb_xy] = MV_LISTED;
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blocklist[ *blocklist_length ][0] = mb_x;
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blocklist[(*blocklist_length)++][1] = mb_y;
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}
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|
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static void guess_mv(ERContext *s)
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{
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int (*blocklist)[2], (*next_blocklist)[2];
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uint8_t *fixed;
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const ptrdiff_t mb_stride = s->mb_stride;
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const int mb_width = s->mb_width;
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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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ptrdiff_t mot_step, mot_stride;
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int blocklist_length, next_blocklist_length;
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|
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if (s->last_pic.f && s->last_pic.f->data[0])
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mb_height = FFMIN(mb_height, (s->last_pic.f->height+15)>>4);
|
|
if (s->next_pic.f && s->next_pic.f->data[0])
|
|
mb_height = FFMIN(mb_height, (s->next_pic.f->height+15)>>4);
|
|
|
|
blocklist = (int (*)[2])s->er_temp_buffer;
|
|
next_blocklist = blocklist + s->mb_stride * s->mb_height;
|
|
fixed = (uint8_t *)(next_blocklist + s->mb_stride * s->mb_height);
|
|
|
|
set_mv_strides(s, &mot_step, &mot_stride);
|
|
|
|
num_avail = 0;
|
|
if (s->last_pic.motion_val[0])
|
|
ff_thread_await_progress(s->last_pic.tf, mb_height-1, 0);
|
|
for (i = 0; i < mb_width * mb_height; i++) {
|
|
const int mb_xy = s->mb_index2xy[i];
|
|
int f = 0;
|
|
int error = s->error_status_table[mb_xy];
|
|
|
|
if (IS_INTRA(s->cur_pic.mb_type[mb_xy]))
|
|
f = MV_FROZEN; // intra // FIXME check
|
|
if (!(error & ER_MV_ERROR))
|
|
f = MV_FROZEN; // inter with undamaged MV
|
|
|
|
fixed[mb_xy] = f;
|
|
if (f == MV_FROZEN)
|
|
num_avail++;
|
|
else if(s->last_pic.f->data[0] && s->last_pic.motion_val[0]){
|
|
const int mb_y= mb_xy / s->mb_stride;
|
|
const int mb_x= mb_xy % s->mb_stride;
|
|
const int mot_index= (mb_x + mb_y*mot_stride) * mot_step;
|
|
s->cur_pic.motion_val[0][mot_index][0]= s->last_pic.motion_val[0][mot_index][0];
|
|
s->cur_pic.motion_val[0][mot_index][1]= s->last_pic.motion_val[0][mot_index][1];
|
|
s->cur_pic.ref_index[0][4*mb_xy] = s->last_pic.ref_index[0][4*mb_xy];
|
|
}
|
|
}
|
|
|
|
if ((!(s->avctx->error_concealment&FF_EC_GUESS_MVS)) ||
|
|
num_avail <= FFMAX(mb_width, mb_height) / 2) {
|
|
for (mb_y = 0; mb_y < 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_dir = (s->last_pic.f && s->last_pic.f->data[0]) ? MV_DIR_FORWARD : MV_DIR_BACKWARD;
|
|
|
|
if (IS_INTRA(s->cur_pic.mb_type[mb_xy]))
|
|
continue;
|
|
if (!(s->error_status_table[mb_xy] & ER_MV_ERROR))
|
|
continue;
|
|
|
|
s->mv[0][0][0] = 0;
|
|
s->mv[0][0][1] = 0;
|
|
s->decode_mb(s->opaque, 0, mv_dir, MV_TYPE_16X16, &s->mv,
|
|
mb_x, mb_y, 0, 0);
|
|
}
|
|
}
|
|
return;
|
|
}
|
|
|
|
blocklist_length = 0;
|
|
for (mb_y = 0; mb_y < mb_height; mb_y++) {
|
|
for (mb_x = 0; mb_x < mb_width; mb_x++) {
|
|
const int mb_xy = mb_x + mb_y * mb_stride;
|
|
if (fixed[mb_xy] == MV_FROZEN) {
|
|
if (mb_x) add_blocklist(blocklist, &blocklist_length, fixed, mb_x - 1, mb_y, mb_xy - 1);
|
|
if (mb_y) add_blocklist(blocklist, &blocklist_length, fixed, mb_x, mb_y - 1, mb_xy - mb_stride);
|
|
if (mb_x+1 < mb_width) add_blocklist(blocklist, &blocklist_length, fixed, mb_x + 1, mb_y, mb_xy + 1);
|
|
if (mb_y+1 < mb_height) add_blocklist(blocklist, &blocklist_length, fixed, mb_x, mb_y + 1, mb_xy + mb_stride);
|
|
}
|
|
}
|
|
}
|
|
|
|
for (depth = 0; ; depth++) {
|
|
int changed, pass, none_left;
|
|
int blocklist_index;
|
|
|
|
none_left = 1;
|
|
changed = 1;
|
|
for (pass = 0; (changed || pass < 2) && pass < 10; pass++) {
|
|
changed = 0;
|
|
for (blocklist_index = 0; blocklist_index < blocklist_length; blocklist_index++) {
|
|
const int mb_x = blocklist[blocklist_index][0];
|
|
const int mb_y = blocklist[blocklist_index][1];
|
|
const int mb_xy = mb_x + mb_y * mb_stride;
|
|
int mv_predictor[8][2];
|
|
int ref[8];
|
|
int pred_count;
|
|
int j;
|
|
int best_score;
|
|
int best_pred;
|
|
int mot_index;
|
|
int prev_x, prev_y, prev_ref;
|
|
|
|
if ((mb_x ^ mb_y ^ pass) & 1)
|
|
continue;
|
|
av_assert2(fixed[mb_xy] != MV_FROZEN);
|
|
|
|
|
|
av_assert1(!IS_INTRA(s->cur_pic.mb_type[mb_xy]));
|
|
av_assert1(s->last_pic.f && s->last_pic.f->data[0]);
|
|
|
|
j = 0;
|
|
if (mb_x > 0)
|
|
j |= fixed[mb_xy - 1];
|
|
if (mb_x + 1 < mb_width)
|
|
j |= fixed[mb_xy + 1];
|
|
if (mb_y > 0)
|
|
j |= fixed[mb_xy - mb_stride];
|
|
if (mb_y + 1 < mb_height)
|
|
j |= fixed[mb_xy + mb_stride];
|
|
|
|
av_assert2(j & MV_FROZEN);
|
|
|
|
if (!(j & MV_CHANGED) && pass > 1)
|
|
continue;
|
|
|
|
none_left = 0;
|
|
pred_count = 0;
|
|
mot_index = (mb_x + mb_y * mot_stride) * mot_step;
|
|
|
|
if (mb_x > 0 && fixed[mb_xy - 1] > 1) {
|
|
mv_predictor[pred_count][0] =
|
|
s->cur_pic.motion_val[0][mot_index - mot_step][0];
|
|
mv_predictor[pred_count][1] =
|
|
s->cur_pic.motion_val[0][mot_index - mot_step][1];
|
|
ref[pred_count] =
|
|
s->cur_pic.ref_index[0][4 * (mb_xy - 1)];
|
|
pred_count++;
|
|
}
|
|
if (mb_x + 1 < mb_width && fixed[mb_xy + 1] > 1) {
|
|
mv_predictor[pred_count][0] =
|
|
s->cur_pic.motion_val[0][mot_index + mot_step][0];
|
|
mv_predictor[pred_count][1] =
|
|
s->cur_pic.motion_val[0][mot_index + mot_step][1];
|
|
ref[pred_count] =
|
|
s->cur_pic.ref_index[0][4 * (mb_xy + 1)];
|
|
pred_count++;
|
|
}
|
|
if (mb_y > 0 && fixed[mb_xy - mb_stride] > 1) {
|
|
mv_predictor[pred_count][0] =
|
|
s->cur_pic.motion_val[0][mot_index - mot_stride * mot_step][0];
|
|
mv_predictor[pred_count][1] =
|
|
s->cur_pic.motion_val[0][mot_index - mot_stride * mot_step][1];
|
|
ref[pred_count] =
|
|
s->cur_pic.ref_index[0][4 * (mb_xy - s->mb_stride)];
|
|
pred_count++;
|
|
}
|
|
if (mb_y + 1<mb_height && fixed[mb_xy + mb_stride] > 1) {
|
|
mv_predictor[pred_count][0] =
|
|
s->cur_pic.motion_val[0][mot_index + mot_stride * mot_step][0];
|
|
mv_predictor[pred_count][1] =
|
|
s->cur_pic.motion_val[0][mot_index + mot_stride * mot_step][1];
|
|
ref[pred_count] =
|
|
s->cur_pic.ref_index[0][4 * (mb_xy + s->mb_stride)];
|
|
pred_count++;
|
|
}
|
|
if (pred_count == 0)
|
|
continue;
|
|
|
|
if (pred_count > 1) {
|
|
int sum_x = 0, sum_y = 0, sum_r = 0;
|
|
int max_x, max_y, min_x, min_y, max_r, min_r;
|
|
|
|
for (j = 0; j < pred_count; j++) {
|
|
sum_x += mv_predictor[j][0];
|
|
sum_y += mv_predictor[j][1];
|
|
sum_r += ref[j];
|
|
if (j && ref[j] != ref[j - 1])
|
|
goto skip_mean_and_median;
|
|
}
|
|
|
|
/* mean */
|
|
mv_predictor[pred_count][0] = sum_x / j;
|
|
mv_predictor[pred_count][1] = sum_y / j;
|
|
ref[pred_count] = sum_r / j;
|
|
|
|
/* median */
|
|
if (pred_count >= 3) {
|
|
min_y = min_x = min_r = 99999;
|
|
max_y = max_x = max_r = -99999;
|
|
} else {
|
|
min_x = min_y = max_x = max_y = min_r = max_r = 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]);
|
|
max_r = FFMAX(max_r, ref[j]);
|
|
min_x = FFMIN(min_x, mv_predictor[j][0]);
|
|
min_y = FFMIN(min_y, mv_predictor[j][1]);
|
|
min_r = FFMIN(min_r, ref[j]);
|
|
}
|
|
mv_predictor[pred_count + 1][0] = sum_x - max_x - min_x;
|
|
mv_predictor[pred_count + 1][1] = sum_y - max_y - min_y;
|
|
ref[pred_count + 1] = sum_r - max_r - min_r;
|
|
|
|
if (pred_count == 4) {
|
|
mv_predictor[pred_count + 1][0] /= 2;
|
|
mv_predictor[pred_count + 1][1] /= 2;
|
|
ref[pred_count + 1] /= 2;
|
|
}
|
|
pred_count += 2;
|
|
}
|
|
|
|
skip_mean_and_median:
|
|
/* zero MV */
|
|
mv_predictor[pred_count][0] =
|
|
mv_predictor[pred_count][1] =
|
|
ref[pred_count] = 0;
|
|
pred_count++;
|
|
|
|
prev_x = s->cur_pic.motion_val[0][mot_index][0];
|
|
prev_y = s->cur_pic.motion_val[0][mot_index][1];
|
|
prev_ref = s->cur_pic.ref_index[0][4 * mb_xy];
|
|
|
|
/* last MV */
|
|
mv_predictor[pred_count][0] = prev_x;
|
|
mv_predictor[pred_count][1] = prev_y;
|
|
ref[pred_count] = prev_ref;
|
|
pred_count++;
|
|
|
|
best_pred = 0;
|
|
best_score = 256 * 256 * 256 * 64;
|
|
for (j = 0; j < pred_count; j++) {
|
|
int *linesize = s->cur_pic.f->linesize;
|
|
int score = 0;
|
|
uint8_t *src = s->cur_pic.f->data[0] +
|
|
mb_x * 16 + mb_y * 16 * linesize[0];
|
|
|
|
s->cur_pic.motion_val[0][mot_index][0] =
|
|
s->mv[0][0][0] = mv_predictor[j][0];
|
|
s->cur_pic.motion_val[0][mot_index][1] =
|
|
s->mv[0][0][1] = mv_predictor[j][1];
|
|
|
|
// predictor intra or otherwise not available
|
|
if (ref[j] < 0)
|
|
continue;
|
|
|
|
s->decode_mb(s->opaque, ref[j], MV_DIR_FORWARD,
|
|
MV_TYPE_16X16, &s->mv, mb_x, mb_y, 0, 0);
|
|
|
|
if (mb_x > 0 && fixed[mb_xy - 1] > 1) {
|
|
int k;
|
|
for (k = 0; k < 16; k++)
|
|
score += FFABS(src[k * linesize[0] - 1] -
|
|
src[k * linesize[0]]);
|
|
}
|
|
if (mb_x + 1 < mb_width && fixed[mb_xy + 1] > 1) {
|
|
int k;
|
|
for (k = 0; k < 16; k++)
|
|
score += FFABS(src[k * linesize[0] + 15] -
|
|
src[k * linesize[0] + 16]);
|
|
}
|
|
if (mb_y > 0 && fixed[mb_xy - mb_stride] > 1) {
|
|
int k;
|
|
for (k = 0; k < 16; k++)
|
|
score += FFABS(src[k - linesize[0]] - src[k]);
|
|
}
|
|
if (mb_y + 1 < mb_height && fixed[mb_xy + mb_stride] > 1) {
|
|
int k;
|
|
for (k = 0; k < 16; k++)
|
|
score += FFABS(src[k + linesize[0] * 15] -
|
|
src[k + linesize[0] * 16]);
|
|
}
|
|
|
|
if (score <= best_score) { // <= will favor the last MV
|
|
best_score = score;
|
|
best_pred = j;
|
|
}
|
|
}
|
|
s->mv[0][0][0] = mv_predictor[best_pred][0];
|
|
s->mv[0][0][1] = mv_predictor[best_pred][1];
|
|
|
|
for (i = 0; i < mot_step; i++)
|
|
for (j = 0; j < mot_step; j++) {
|
|
s->cur_pic.motion_val[0][mot_index + i + j * mot_stride][0] = s->mv[0][0][0];
|
|
s->cur_pic.motion_val[0][mot_index + i + j * mot_stride][1] = s->mv[0][0][1];
|
|
}
|
|
|
|
s->decode_mb(s->opaque, ref[best_pred], MV_DIR_FORWARD,
|
|
MV_TYPE_16X16, &s->mv, mb_x, mb_y, 0, 0);
|
|
|
|
|
|
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;
|
|
}
|
|
}
|
|
|
|
if (none_left)
|
|
return;
|
|
|
|
next_blocklist_length = 0;
|
|
|
|
for (blocklist_index = 0; blocklist_index < blocklist_length; blocklist_index++) {
|
|
const int mb_x = blocklist[blocklist_index][0];
|
|
const int mb_y = blocklist[blocklist_index][1];
|
|
const int mb_xy = mb_x + mb_y * mb_stride;
|
|
|
|
if (fixed[mb_xy] & (MV_CHANGED|MV_UNCHANGED|MV_FROZEN)) {
|
|
fixed[mb_xy] = MV_FROZEN;
|
|
if (mb_x > 0)
|
|
add_blocklist(next_blocklist, &next_blocklist_length, fixed, mb_x - 1, mb_y, mb_xy - 1);
|
|
if (mb_y > 0)
|
|
add_blocklist(next_blocklist, &next_blocklist_length, fixed, mb_x, mb_y - 1, mb_xy - mb_stride);
|
|
if (mb_x + 1 < mb_width)
|
|
add_blocklist(next_blocklist, &next_blocklist_length, fixed, mb_x + 1, mb_y, mb_xy + 1);
|
|
if (mb_y + 1 < mb_height)
|
|
add_blocklist(next_blocklist, &next_blocklist_length, fixed, mb_x, mb_y + 1, mb_xy + mb_stride);
|
|
}
|
|
}
|
|
av_assert0(next_blocklist_length <= mb_height * mb_width);
|
|
FFSWAP(int , blocklist_length, next_blocklist_length);
|
|
FFSWAP(void*, blocklist, next_blocklist);
|
|
}
|
|
}
|
|
|
|
static int is_intra_more_likely(ERContext *s)
|
|
{
|
|
int is_intra_likely, i, j, undamaged_count, skip_amount, mb_x, mb_y;
|
|
|
|
if (!s->last_pic.f || !s->last_pic.f->data[0])
|
|
return 1; // no previous frame available -> use spatial prediction
|
|
|
|
if (s->avctx->error_concealment & FF_EC_FAVOR_INTER)
|
|
return 0;
|
|
|
|
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 & ER_DC_ERROR) && (error & ER_MV_ERROR)))
|
|
undamaged_count++;
|
|
}
|
|
|
|
if (undamaged_count < 5)
|
|
return 0; // almost all MBs damaged -> use temporal prediction
|
|
|
|
skip_amount = FFMAX(undamaged_count / 50, 1); // check only up to 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 & ER_DC_ERROR) && (error & ER_MV_ERROR))
|
|
continue; // skip damaged
|
|
|
|
j++;
|
|
// skip a few to speed things up
|
|
if ((j % skip_amount) != 0)
|
|
continue;
|
|
|
|
if (s->cur_pic.f->pict_type == AV_PICTURE_TYPE_I) {
|
|
int *linesize = s->cur_pic.f->linesize;
|
|
uint8_t *mb_ptr = s->cur_pic.f->data[0] +
|
|
mb_x * 16 + mb_y * 16 * linesize[0];
|
|
uint8_t *last_mb_ptr = s->last_pic.f->data[0] +
|
|
mb_x * 16 + mb_y * 16 * linesize[0];
|
|
|
|
if (s->avctx->codec_id == AV_CODEC_ID_H264) {
|
|
// FIXME
|
|
} else {
|
|
ff_thread_await_progress(s->last_pic.tf, mb_y, 0);
|
|
}
|
|
is_intra_likely += s->sad(NULL, last_mb_ptr, mb_ptr,
|
|
linesize[0], 16);
|
|
// FIXME need await_progress() here
|
|
is_intra_likely -= s->sad(NULL, last_mb_ptr,
|
|
last_mb_ptr + linesize[0] * 16,
|
|
linesize[0], 16);
|
|
} else {
|
|
if (IS_INTRA(s->cur_pic.mb_type[mb_xy]))
|
|
is_intra_likely++;
|
|
else
|
|
is_intra_likely--;
|
|
}
|
|
}
|
|
}
|
|
// av_log(NULL, AV_LOG_ERROR, "is_intra_likely: %d type:%d\n", is_intra_likely, s->pict_type);
|
|
return is_intra_likely > 0;
|
|
}
|
|
|
|
void ff_er_frame_start(ERContext *s)
|
|
{
|
|
if (!s->avctx->error_concealment)
|
|
return;
|
|
|
|
if (!s->mecc_inited) {
|
|
MECmpContext mecc;
|
|
ff_me_cmp_init(&mecc, s->avctx);
|
|
s->sad = mecc.sad[0];
|
|
s->mecc_inited = 1;
|
|
}
|
|
|
|
memset(s->error_status_table, ER_MB_ERROR | VP_START | ER_MB_END,
|
|
s->mb_stride * s->mb_height * sizeof(uint8_t));
|
|
atomic_init(&s->error_count, 3 * s->mb_num);
|
|
s->error_occurred = 0;
|
|
}
|
|
|
|
static int er_supported(ERContext *s)
|
|
{
|
|
if(s->avctx->hwaccel && s->avctx->hwaccel->decode_slice ||
|
|
!s->cur_pic.f ||
|
|
s->cur_pic.field_picture
|
|
)
|
|
return 0;
|
|
return 1;
|
|
}
|
|
|
|
/**
|
|
* Add 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 (ER_MV_END, ER_AC_ERROR, ...), it is
|
|
* assumed that no earlier end or error of the same type occurred
|
|
*/
|
|
void ff_er_add_slice(ERContext *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 (s->avctx->hwaccel && s->avctx->hwaccel->decode_slice)
|
|
return;
|
|
|
|
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->avctx->error_concealment)
|
|
return;
|
|
|
|
mask &= ~VP_START;
|
|
if (status & (ER_AC_ERROR | ER_AC_END)) {
|
|
mask &= ~(ER_AC_ERROR | ER_AC_END);
|
|
atomic_fetch_add(&s->error_count, start_i - end_i - 1);
|
|
}
|
|
if (status & (ER_DC_ERROR | ER_DC_END)) {
|
|
mask &= ~(ER_DC_ERROR | ER_DC_END);
|
|
atomic_fetch_add(&s->error_count, start_i - end_i - 1);
|
|
}
|
|
if (status & (ER_MV_ERROR | ER_MV_END)) {
|
|
mask &= ~(ER_MV_ERROR | ER_MV_END);
|
|
atomic_fetch_add(&s->error_count, start_i - end_i - 1);
|
|
}
|
|
|
|
if (status & ER_MB_ERROR) {
|
|
s->error_occurred = 1;
|
|
atomic_store(&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)
|
|
atomic_store(&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->active_thread_type & FF_THREAD_SLICE) &&
|
|
er_supported(s) && 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 != (ER_MV_END | ER_DC_END | ER_AC_END)) {
|
|
s->error_occurred = 1;
|
|
atomic_store(&s->error_count, INT_MAX);
|
|
}
|
|
}
|
|
}
|
|
|
|
void ff_er_frame_end(ERContext *s)
|
|
{
|
|
int *linesize = NULL;
|
|
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;
|
|
|
|
/* We do not support ER of field pictures yet,
|
|
* though it should not crash if enabled. */
|
|
if (!s->avctx->error_concealment || !atomic_load(&s->error_count) ||
|
|
s->avctx->lowres ||
|
|
!er_supported(s) ||
|
|
atomic_load(&s->error_count) == 3 * s->mb_width *
|
|
(s->avctx->skip_top + s->avctx->skip_bottom)) {
|
|
return;
|
|
}
|
|
linesize = s->cur_pic.f->linesize;
|
|
|
|
if ( s->avctx->codec_id == AV_CODEC_ID_MPEG2VIDEO
|
|
&& (FFALIGN(s->avctx->height, 16)&16)
|
|
&& atomic_load(&s->error_count) == 3 * s->mb_width * (s->avctx->skip_top + s->avctx->skip_bottom + 1)) {
|
|
for (mb_x = 0; mb_x < s->mb_width; mb_x++) {
|
|
int status = s->error_status_table[mb_x + (s->mb_height - 1) * s->mb_stride];
|
|
if (status != 0x7F)
|
|
break;
|
|
}
|
|
|
|
if (mb_x == s->mb_width) {
|
|
av_log(s->avctx, AV_LOG_DEBUG, "ignoring last missing slice\n");
|
|
return;
|
|
}
|
|
}
|
|
|
|
if (s->last_pic.f) {
|
|
if (s->last_pic.f->width != s->cur_pic.f->width ||
|
|
s->last_pic.f->height != s->cur_pic.f->height ||
|
|
s->last_pic.f->format != s->cur_pic.f->format) {
|
|
av_log(s->avctx, AV_LOG_WARNING, "Cannot use previous picture in error concealment\n");
|
|
memset(&s->last_pic, 0, sizeof(s->last_pic));
|
|
}
|
|
}
|
|
if (s->next_pic.f) {
|
|
if (s->next_pic.f->width != s->cur_pic.f->width ||
|
|
s->next_pic.f->height != s->cur_pic.f->height ||
|
|
s->next_pic.f->format != s->cur_pic.f->format) {
|
|
av_log(s->avctx, AV_LOG_WARNING, "Cannot use next picture in error concealment\n");
|
|
memset(&s->next_pic, 0, sizeof(s->next_pic));
|
|
}
|
|
}
|
|
|
|
if (!s->cur_pic.motion_val[0] || !s->cur_pic.ref_index[0]) {
|
|
av_log(s->avctx, AV_LOG_ERROR, "Warning MVs not available\n");
|
|
|
|
for (i = 0; i < 2; i++) {
|
|
s->ref_index[i] = av_calloc(s->mb_stride * s->mb_height, 4 * sizeof(uint8_t));
|
|
s->motion_val_base[i] = av_calloc(size + 4, 2 * sizeof(uint16_t));
|
|
if (!s->ref_index[i] || !s->motion_val_base[i])
|
|
break;
|
|
s->cur_pic.ref_index[i] = s->ref_index[i];
|
|
s->cur_pic.motion_val[i] = s->motion_val_base[i] + 4;
|
|
}
|
|
if (i < 2) {
|
|
for (i = 0; i < 2; i++) {
|
|
av_freep(&s->ref_index[i]);
|
|
av_freep(&s->motion_val_base[i]);
|
|
s->cur_pic.ref_index[i] = NULL;
|
|
s->cur_pic.motion_val[i] = NULL;
|
|
}
|
|
return;
|
|
}
|
|
}
|
|
|
|
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 & ER_AC_END)
|
|
end_ok = 0;
|
|
if ((error & ER_MV_END) ||
|
|
(error & ER_DC_END) ||
|
|
(error & ER_AC_ERROR))
|
|
end_ok = 1;
|
|
|
|
if (!end_ok)
|
|
s->error_status_table[mb_xy]|= ER_AC_ERROR;
|
|
|
|
if (error & VP_START)
|
|
end_ok = 0;
|
|
}
|
|
}
|
|
#endif
|
|
/* handle missing slices */
|
|
if (s->avctx->err_recognition & AV_EF_EXPLODE) {
|
|
int end_ok = 1;
|
|
|
|
// FIXME + 100 hack
|
|
for (i = s->mb_num - 2; i >= s->mb_width + 100; i--) {
|
|
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 | ER_MB_ERROR | ER_MB_END) &&
|
|
error1 != (VP_START | ER_MB_ERROR | ER_MB_END) &&
|
|
((error1 & ER_AC_END) || (error1 & ER_DC_END) ||
|
|
(error1 & ER_MV_END))) {
|
|
// end & uninit
|
|
end_ok = 0;
|
|
}
|
|
|
|
if (!end_ok)
|
|
s->error_status_table[mb_xy] |= ER_MB_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 || !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 & ER_MB_ERROR;
|
|
} else {
|
|
error |= old_error & ER_MB_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];
|
|
int error = s->error_status_table[mb_xy];
|
|
if (error & ER_MB_ERROR)
|
|
error |= ER_MB_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];
|
|
int error = s->error_status_table[mb_xy];
|
|
if (error & ER_DC_ERROR)
|
|
dc_error++;
|
|
if (error & ER_AC_ERROR)
|
|
ac_error++;
|
|
if (error & ER_MV_ERROR)
|
|
mv_error++;
|
|
}
|
|
av_log(s->avctx, AV_LOG_INFO, "concealing %d DC, %d AC, %d MV errors in %c frame\n",
|
|
dc_error, ac_error, mv_error, av_get_picture_type_char(s->cur_pic.f->pict_type));
|
|
|
|
s->cur_pic.f->decode_error_flags |= FF_DECODE_ERROR_CONCEALMENT_ACTIVE;
|
|
|
|
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];
|
|
int error = s->error_status_table[mb_xy];
|
|
if (!((error & ER_DC_ERROR) && (error & ER_MV_ERROR)))
|
|
continue;
|
|
|
|
if (is_intra_likely)
|
|
s->cur_pic.mb_type[mb_xy] = MB_TYPE_INTRA4x4;
|
|
else
|
|
s->cur_pic.mb_type[mb_xy] = MB_TYPE_16x16 | MB_TYPE_L0;
|
|
}
|
|
|
|
// change inter to intra blocks if no reference frames are available
|
|
if (!(s->last_pic.f && s->last_pic.f->data[0]) &&
|
|
!(s->next_pic.f && s->next_pic.f->data[0]))
|
|
for (i = 0; i < s->mb_num; i++) {
|
|
const int mb_xy = s->mb_index2xy[i];
|
|
if (!IS_INTRA(s->cur_pic.mb_type[mb_xy]))
|
|
s->cur_pic.mb_type[mb_xy] = MB_TYPE_INTRA4x4;
|
|
}
|
|
|
|
/* 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->cur_pic.mb_type[mb_xy];
|
|
const int dir = !(s->last_pic.f && s->last_pic.f->data[0]);
|
|
const int mv_dir = dir ? MV_DIR_BACKWARD : MV_DIR_FORWARD;
|
|
int mv_type;
|
|
|
|
int error = s->error_status_table[mb_xy];
|
|
|
|
if (IS_INTRA(mb_type))
|
|
continue; // intra
|
|
if (error & ER_MV_ERROR)
|
|
continue; // inter with damaged MV
|
|
if (!(error & ER_AC_ERROR))
|
|
continue; // undamaged inter
|
|
|
|
if (IS_8X8(mb_type)) {
|
|
int mb_index = mb_x * 2 + mb_y * 2 * s->b8_stride;
|
|
int j;
|
|
mv_type = MV_TYPE_8X8;
|
|
for (j = 0; j < 4; j++) {
|
|
s->mv[0][j][0] = s->cur_pic.motion_val[dir][mb_index + (j & 1) + (j >> 1) * s->b8_stride][0];
|
|
s->mv[0][j][1] = s->cur_pic.motion_val[dir][mb_index + (j & 1) + (j >> 1) * s->b8_stride][1];
|
|
}
|
|
} else {
|
|
mv_type = MV_TYPE_16X16;
|
|
s->mv[0][0][0] = s->cur_pic.motion_val[dir][mb_x * 2 + mb_y * 2 * s->b8_stride][0];
|
|
s->mv[0][0][1] = s->cur_pic.motion_val[dir][mb_x * 2 + mb_y * 2 * s->b8_stride][1];
|
|
}
|
|
|
|
s->decode_mb(s->opaque, 0 /* FIXME H.264 partitioned slices need this set */,
|
|
mv_dir, mv_type, &s->mv, mb_x, mb_y, 0, 0);
|
|
}
|
|
}
|
|
|
|
/* guess MVs */
|
|
if (s->cur_pic.f->pict_type == AV_PICTURE_TYPE_B) {
|
|
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->cur_pic.mb_type[mb_xy];
|
|
int mv_dir = MV_DIR_FORWARD | MV_DIR_BACKWARD;
|
|
|
|
int error = s->error_status_table[mb_xy];
|
|
|
|
if (IS_INTRA(mb_type))
|
|
continue;
|
|
if (!(error & ER_MV_ERROR))
|
|
continue; // inter with undamaged MV
|
|
if (!(error & ER_AC_ERROR))
|
|
continue; // undamaged inter
|
|
|
|
if (!(s->last_pic.f && s->last_pic.f->data[0]))
|
|
mv_dir &= ~MV_DIR_FORWARD;
|
|
if (!(s->next_pic.f && s->next_pic.f->data[0]))
|
|
mv_dir &= ~MV_DIR_BACKWARD;
|
|
|
|
if (s->pp_time) {
|
|
int time_pp = s->pp_time;
|
|
int time_pb = s->pb_time;
|
|
|
|
av_assert0(s->avctx->codec_id != AV_CODEC_ID_H264);
|
|
ff_thread_await_progress(s->next_pic.tf, mb_y, 0);
|
|
|
|
s->mv[0][0][0] = s->next_pic.motion_val[0][xy][0] * time_pb / time_pp;
|
|
s->mv[0][0][1] = s->next_pic.motion_val[0][xy][1] * time_pb / time_pp;
|
|
s->mv[1][0][0] = s->next_pic.motion_val[0][xy][0] * (time_pb - time_pp) / time_pp;
|
|
s->mv[1][0][1] = s->next_pic.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->decode_mb(s->opaque, 0, mv_dir, MV_TYPE_16X16, &s->mv,
|
|
mb_x, mb_y, 0, 0);
|
|
}
|
|
}
|
|
} 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->cur_pic.mb_type[mb_xy];
|
|
|
|
// error = s->error_status_table[mb_xy];
|
|
|
|
if (IS_INTRA(mb_type) && s->partitioned_frame)
|
|
continue;
|
|
// if (error & ER_MV_ERROR)
|
|
// continue; // inter data damaged FIXME is this good?
|
|
|
|
dest_y = s->cur_pic.f->data[0] + mb_x * 16 + mb_y * 16 * linesize[0];
|
|
dest_cb = s->cur_pic.f->data[1] + mb_x * 8 + mb_y * 8 * linesize[1];
|
|
dest_cr = s->cur_pic.f->data[2] + mb_x * 8 + mb_y * 8 * linesize[2];
|
|
|
|
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) * linesize[0]];
|
|
}
|
|
dc_ptr[(n & 1) + (n >> 1) * s->b8_stride] = (dc + 4) >> 3;
|
|
}
|
|
|
|
if (!s->cur_pic.f->data[2])
|
|
continue;
|
|
|
|
dcu = dcv = 0;
|
|
for (y = 0; y < 8; y++) {
|
|
int x;
|
|
for (x = 0; x < 8; x++) {
|
|
dcu += dest_cb[x + y * linesize[1]];
|
|
dcv += dest_cr[x + y * linesize[2]];
|
|
}
|
|
}
|
|
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->cur_pic.mb_type[mb_xy];
|
|
|
|
int error = s->error_status_table[mb_xy];
|
|
|
|
if (IS_INTER(mb_type))
|
|
continue;
|
|
if (!(error & ER_AC_ERROR))
|
|
continue; // undamaged
|
|
|
|
dest_y = s->cur_pic.f->data[0] + mb_x * 16 + mb_y * 16 * linesize[0];
|
|
dest_cb = s->cur_pic.f->data[1] + mb_x * 8 + mb_y * 8 * linesize[1];
|
|
dest_cr = s->cur_pic.f->data[2] + mb_x * 8 + mb_y * 8 * linesize[2];
|
|
if (!s->cur_pic.f->data[2])
|
|
dest_cb = dest_cr = NULL;
|
|
|
|
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->cur_pic.f->data[0], s->mb_width * 2,
|
|
s->mb_height * 2, linesize[0], 1);
|
|
|
|
/* filter vertical block boundaries */
|
|
v_block_filter(s, s->cur_pic.f->data[0], s->mb_width * 2,
|
|
s->mb_height * 2, linesize[0], 1);
|
|
|
|
if (s->cur_pic.f->data[2]) {
|
|
h_block_filter(s, s->cur_pic.f->data[1], s->mb_width,
|
|
s->mb_height, linesize[1], 0);
|
|
h_block_filter(s, s->cur_pic.f->data[2], s->mb_width,
|
|
s->mb_height, linesize[2], 0);
|
|
v_block_filter(s, s->cur_pic.f->data[1], s->mb_width,
|
|
s->mb_height, linesize[1], 0);
|
|
v_block_filter(s, s->cur_pic.f->data[2], s->mb_width,
|
|
s->mb_height, linesize[2], 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->mbskip_table && s->cur_pic.f->pict_type != AV_PICTURE_TYPE_B &&
|
|
(error & (ER_DC_ERROR | ER_MV_ERROR | ER_AC_ERROR))) {
|
|
s->mbskip_table[mb_xy] = 0;
|
|
}
|
|
if (s->mbintra_table)
|
|
s->mbintra_table[mb_xy] = 1;
|
|
}
|
|
|
|
for (i = 0; i < 2; i++) {
|
|
av_freep(&s->ref_index[i]);
|
|
av_freep(&s->motion_val_base[i]);
|
|
s->cur_pic.ref_index[i] = NULL;
|
|
s->cur_pic.motion_val[i] = NULL;
|
|
}
|
|
|
|
memset(&s->cur_pic, 0, sizeof(ERPicture));
|
|
memset(&s->last_pic, 0, sizeof(ERPicture));
|
|
memset(&s->next_pic, 0, sizeof(ERPicture));
|
|
}
|