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Diffstat (limited to 'ffmpeg/libavcodec/error_resilience.c')
-rw-r--r--ffmpeg/libavcodec/error_resilience.c1275
1 files changed, 1275 insertions, 0 deletions
diff --git a/ffmpeg/libavcodec/error_resilience.c b/ffmpeg/libavcodec/error_resilience.c
new file mode 100644
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+++ b/ffmpeg/libavcodec/error_resilience.c
@@ -0,0 +1,1275 @@
+/*
+ * Error resilience / concealment
+ *
+ * Copyright (c) 2002-2004 Michael Niedermayer <michaelni@gmx.at>
+ *
+ * This file is part of FFmpeg.
+ *
+ * FFmpeg is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * FFmpeg is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with FFmpeg; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+/**
+ * @file
+ * Error resilience / concealment.
+ */
+
+#include <limits.h>
+
+#include "avcodec.h"
+#include "error_resilience.h"
+#include "mpegvideo.h"
+#include "rectangle.h"
+#include "thread.h"
+
+/**
+ * @param stride the number of MVs to get to the next row
+ * @param mv_step the number of MVs per row or column in a macroblock
+ */
+static void set_mv_strides(ERContext *s, int *mv_step, int *stride)
+{
+ if (s->avctx->codec_id == AV_CODEC_ID_H264) {
+ av_assert0(s->quarter_sample);
+ *mv_step = 4;
+ *stride = s->mb_width * 4;
+ } else {
+ *mv_step = 2;
+ *stride = s->b8_stride;
+ }
+}
+
+/**
+ * Replace the current MB with a flat dc-only version.
+ */
+static void put_dc(ERContext *s, uint8_t *dest_y, uint8_t *dest_cb,
+ uint8_t *dest_cr, int mb_x, int mb_y)
+{
+ int *linesize = s->cur_pic->f.linesize;
+ int dc, dcu, dcv, y, i;
+ for (i = 0; i < 4; i++) {
+ dc = s->dc_val[0][mb_x * 2 + (i & 1) + (mb_y * 2 + (i >> 1)) * s->b8_stride];
+ if (dc < 0)
+ dc = 0;
+ else if (dc > 2040)
+ dc = 2040;
+ for (y = 0; y < 8; y++) {
+ int x;
+ for (x = 0; x < 8; x++)
+ dest_y[x + (i & 1) * 8 + (y + (i >> 1) * 8) * linesize[0]] = dc / 8;
+ }
+ }
+ dcu = s->dc_val[1][mb_x + mb_y * s->mb_stride];
+ dcv = s->dc_val[2][mb_x + mb_y * s->mb_stride];
+ if (dcu < 0)
+ dcu = 0;
+ else if (dcu > 2040)
+ dcu = 2040;
+ if (dcv < 0)
+ dcv = 0;
+ else if (dcv > 2040)
+ dcv = 2040;
+ for (y = 0; y < 8; y++) {
+ int x;
+ for (x = 0; x < 8; x++) {
+ dest_cb[x + y * linesize[1]] = dcu / 8;
+ dest_cr[x + y * linesize[2]] = dcv / 8;
+ }
+ }
+}
+
+static void filter181(int16_t *data, int width, int height, int stride)
+{
+ int x, y;
+
+ /* horizontal filter */
+ for (y = 1; y < height - 1; y++) {
+ int prev_dc = data[0 + y * stride];
+
+ for (x = 1; x < width - 1; x++) {
+ int dc;
+ dc = -prev_dc +
+ data[x + y * stride] * 8 -
+ data[x + 1 + y * stride];
+ dc = (dc * 10923 + 32768) >> 16;
+ prev_dc = data[x + y * stride];
+ data[x + y * stride] = dc;
+ }
+ }
+
+ /* vertical filter */
+ for (x = 1; x < width - 1; x++) {
+ int prev_dc = data[x];
+
+ for (y = 1; y < height - 1; y++) {
+ int dc;
+
+ dc = -prev_dc +
+ data[x + y * stride] * 8 -
+ data[x + (y + 1) * stride];
+ dc = (dc * 10923 + 32768) >> 16;
+ prev_dc = data[x + y * stride];
+ data[x + y * stride] = dc;
+ }
+ }
+}
+
+/**
+ * guess the dc of blocks which do not have an undamaged dc
+ * @param w width in 8 pixel blocks
+ * @param h height in 8 pixel blocks
+ */
+static void guess_dc(ERContext *s, int16_t *dc, int w,
+ int h, int stride, int is_luma)
+{
+ int b_x, b_y;
+ int16_t (*col )[4] = av_malloc(stride*h*sizeof( int16_t)*4);
+ uint32_t (*dist)[4] = av_malloc(stride*h*sizeof(uint32_t)*4);
+
+ if(!col || !dist) {
+ av_log(s->avctx, AV_LOG_ERROR, "guess_dc() is out of memory\n");
+ goto fail;
+ }
+
+ for(b_y=0; b_y<h; b_y++){
+ int color= 1024;
+ int distance= -1;
+ for(b_x=0; b_x<w; b_x++){
+ int mb_index_j= (b_x>>is_luma) + (b_y>>is_luma)*s->mb_stride;
+ int error_j= s->error_status_table[mb_index_j];
+ int intra_j = IS_INTRA(s->cur_pic->mb_type[mb_index_j]);
+ if(intra_j==0 || !(error_j&ER_DC_ERROR)){
+ color= dc[b_x + b_y*stride];
+ distance= b_x;
+ }
+ col [b_x + b_y*stride][1]= color;
+ dist[b_x + b_y*stride][1]= distance >= 0 ? b_x-distance : 9999;
+ }
+ color= 1024;
+ distance= -1;
+ for(b_x=w-1; b_x>=0; b_x--){
+ int mb_index_j= (b_x>>is_luma) + (b_y>>is_luma)*s->mb_stride;
+ int error_j= s->error_status_table[mb_index_j];
+ int intra_j = IS_INTRA(s->cur_pic->mb_type[mb_index_j]);
+ if(intra_j==0 || !(error_j&ER_DC_ERROR)){
+ color= dc[b_x + b_y*stride];
+ distance= b_x;
+ }
+ col [b_x + b_y*stride][0]= color;
+ dist[b_x + b_y*stride][0]= distance >= 0 ? distance-b_x : 9999;
+ }
+ }
+ for(b_x=0; b_x<w; b_x++){
+ int color= 1024;
+ int distance= -1;
+ for(b_y=0; b_y<h; b_y++){
+ int mb_index_j= (b_x>>is_luma) + (b_y>>is_luma)*s->mb_stride;
+ int error_j= s->error_status_table[mb_index_j];
+ int intra_j = IS_INTRA(s->cur_pic->mb_type[mb_index_j]);
+ if(intra_j==0 || !(error_j&ER_DC_ERROR)){
+ color= dc[b_x + b_y*stride];
+ distance= b_y;
+ }
+ col [b_x + b_y*stride][3]= color;
+ dist[b_x + b_y*stride][3]= distance >= 0 ? b_y-distance : 9999;
+ }
+ color= 1024;
+ distance= -1;
+ for(b_y=h-1; b_y>=0; b_y--){
+ int mb_index_j= (b_x>>is_luma) + (b_y>>is_luma)*s->mb_stride;
+ int error_j= s->error_status_table[mb_index_j];
+ int intra_j = IS_INTRA(s->cur_pic->mb_type[mb_index_j]);
+ if(intra_j==0 || !(error_j&ER_DC_ERROR)){
+ color= dc[b_x + b_y*stride];
+ distance= b_y;
+ }
+ col [b_x + b_y*stride][2]= color;
+ dist[b_x + b_y*stride][2]= distance >= 0 ? distance-b_y : 9999;
+ }
+ }
+
+ for (b_y = 0; b_y < h; b_y++) {
+ for (b_x = 0; b_x < w; b_x++) {
+ int mb_index, error, j;
+ int64_t guess, weight_sum;
+ mb_index = (b_x >> is_luma) + (b_y >> is_luma) * s->mb_stride;
+ error = s->error_status_table[mb_index];
+
+ if (IS_INTER(s->cur_pic->mb_type[mb_index]))
+ continue; // inter
+ if (!(error & ER_DC_ERROR))
+ continue; // dc-ok
+
+ weight_sum = 0;
+ guess = 0;
+ for (j = 0; j < 4; j++) {
+ int64_t weight = 256 * 256 * 256 * 16 / FFMAX(dist[b_x + b_y*stride][j], 1);
+ guess += weight*(int64_t)col[b_x + b_y*stride][j];
+ weight_sum += weight;
+ }
+ guess = (guess + weight_sum / 2) / weight_sum;
+ dc[b_x + b_y * stride] = guess;
+ }
+ }
+
+fail:
+ av_freep(&col);
+ av_freep(&dist);
+}
+
+/**
+ * simple horizontal deblocking filter used for error resilience
+ * @param w width in 8 pixel blocks
+ * @param h height in 8 pixel blocks
+ */
+static void h_block_filter(ERContext *s, uint8_t *dst, int w,
+ int h, int stride, int is_luma)
+{
+ int b_x, b_y, mvx_stride, mvy_stride;
+ uint8_t *cm = ff_cropTbl + MAX_NEG_CROP;
+ set_mv_strides(s, &mvx_stride, &mvy_stride);
+ mvx_stride >>= is_luma;
+ mvy_stride *= mvx_stride;
+
+ for (b_y = 0; b_y < h; b_y++) {
+ for (b_x = 0; b_x < w - 1; b_x++) {
+ int y;
+ int left_status = s->error_status_table[( b_x >> is_luma) + (b_y >> is_luma) * s->mb_stride];
+ int right_status = s->error_status_table[((b_x + 1) >> is_luma) + (b_y >> is_luma) * s->mb_stride];
+ int left_intra = IS_INTRA(s->cur_pic->mb_type[( b_x >> is_luma) + (b_y >> is_luma) * s->mb_stride]);
+ int right_intra = IS_INTRA(s->cur_pic->mb_type[((b_x + 1) >> is_luma) + (b_y >> is_luma) * s->mb_stride]);
+ int left_damage = left_status & ER_MB_ERROR;
+ int right_damage = right_status & ER_MB_ERROR;
+ int offset = b_x * 8 + b_y * stride * 8;
+ int16_t *left_mv = s->cur_pic->motion_val[0][mvy_stride * b_y + mvx_stride * b_x];
+ int16_t *right_mv = s->cur_pic->motion_val[0][mvy_stride * b_y + mvx_stride * (b_x + 1)];
+ if (!(left_damage || right_damage))
+ continue; // both undamaged
+ if ((!left_intra) && (!right_intra) &&
+ FFABS(left_mv[0] - right_mv[0]) +
+ FFABS(left_mv[1] + right_mv[1]) < 2)
+ continue;
+
+ for (y = 0; y < 8; y++) {
+ int a, b, c, d;
+
+ a = dst[offset + 7 + y * stride] - dst[offset + 6 + y * stride];
+ b = dst[offset + 8 + y * stride] - dst[offset + 7 + y * stride];
+ c = dst[offset + 9 + y * stride] - dst[offset + 8 + y * stride];
+
+ d = FFABS(b) - ((FFABS(a) + FFABS(c) + 1) >> 1);
+ d = FFMAX(d, 0);
+ if (b < 0)
+ d = -d;
+
+ if (d == 0)
+ continue;
+
+ if (!(left_damage && right_damage))
+ d = d * 16 / 9;
+
+ if (left_damage) {
+ dst[offset + 7 + y * stride] = cm[dst[offset + 7 + y * stride] + ((d * 7) >> 4)];
+ dst[offset + 6 + y * stride] = cm[dst[offset + 6 + y * stride] + ((d * 5) >> 4)];
+ dst[offset + 5 + y * stride] = cm[dst[offset + 5 + y * stride] + ((d * 3) >> 4)];
+ dst[offset + 4 + y * stride] = cm[dst[offset + 4 + y * stride] + ((d * 1) >> 4)];
+ }
+ if (right_damage) {
+ dst[offset + 8 + y * stride] = cm[dst[offset + 8 + y * stride] - ((d * 7) >> 4)];
+ dst[offset + 9 + y * stride] = cm[dst[offset + 9 + y * stride] - ((d * 5) >> 4)];
+ dst[offset + 10+ y * stride] = cm[dst[offset + 10 + y * stride] - ((d * 3) >> 4)];
+ dst[offset + 11+ y * stride] = cm[dst[offset + 11 + y * stride] - ((d * 1) >> 4)];
+ }
+ }
+ }
+ }
+}
+
+/**
+ * simple vertical deblocking filter used for error resilience
+ * @param w width in 8 pixel blocks
+ * @param h height in 8 pixel blocks
+ */
+static void v_block_filter(ERContext *s, uint8_t *dst, int w, int h,
+ int stride, int is_luma)
+{
+ int b_x, b_y, mvx_stride, mvy_stride;
+ uint8_t *cm = ff_cropTbl + MAX_NEG_CROP;
+ set_mv_strides(s, &mvx_stride, &mvy_stride);
+ mvx_stride >>= is_luma;
+ mvy_stride *= mvx_stride;
+
+ for (b_y = 0; b_y < h - 1; b_y++) {
+ for (b_x = 0; b_x < w; b_x++) {
+ int x;
+ int top_status = s->error_status_table[(b_x >> is_luma) + (b_y >> is_luma) * s->mb_stride];
+ int bottom_status = s->error_status_table[(b_x >> is_luma) + ((b_y + 1) >> is_luma) * s->mb_stride];
+ int top_intra = IS_INTRA(s->cur_pic->mb_type[(b_x >> is_luma) + ( b_y >> is_luma) * s->mb_stride]);
+ int bottom_intra = IS_INTRA(s->cur_pic->mb_type[(b_x >> is_luma) + ((b_y + 1) >> is_luma) * s->mb_stride]);
+ int top_damage = top_status & ER_MB_ERROR;
+ int bottom_damage = bottom_status & ER_MB_ERROR;
+ int offset = b_x * 8 + b_y * stride * 8;
+
+ int16_t *top_mv = s->cur_pic->motion_val[0][mvy_stride * b_y + mvx_stride * b_x];
+ int16_t *bottom_mv = s->cur_pic->motion_val[0][mvy_stride * (b_y + 1) + mvx_stride * b_x];
+
+ if (!(top_damage || bottom_damage))
+ continue; // both undamaged
+
+ if ((!top_intra) && (!bottom_intra) &&
+ FFABS(top_mv[0] - bottom_mv[0]) +
+ FFABS(top_mv[1] + bottom_mv[1]) < 2)
+ continue;
+
+ for (x = 0; x < 8; x++) {
+ int a, b, c, d;
+
+ a = dst[offset + x + 7 * stride] - dst[offset + x + 6 * stride];
+ b = dst[offset + x + 8 * stride] - dst[offset + x + 7 * stride];
+ c = dst[offset + x + 9 * stride] - dst[offset + x + 8 * stride];
+
+ d = FFABS(b) - ((FFABS(a) + FFABS(c) + 1) >> 1);
+ d = FFMAX(d, 0);
+ if (b < 0)
+ d = -d;
+
+ if (d == 0)
+ continue;
+
+ if (!(top_damage && bottom_damage))
+ d = d * 16 / 9;
+
+ if (top_damage) {
+ dst[offset + x + 7 * stride] = cm[dst[offset + x + 7 * stride] + ((d * 7) >> 4)];
+ dst[offset + x + 6 * stride] = cm[dst[offset + x + 6 * stride] + ((d * 5) >> 4)];
+ dst[offset + x + 5 * stride] = cm[dst[offset + x + 5 * stride] + ((d * 3) >> 4)];
+ dst[offset + x + 4 * stride] = cm[dst[offset + x + 4 * stride] + ((d * 1) >> 4)];
+ }
+ if (bottom_damage) {
+ dst[offset + x + 8 * stride] = cm[dst[offset + x + 8 * stride] - ((d * 7) >> 4)];
+ dst[offset + x + 9 * stride] = cm[dst[offset + x + 9 * stride] - ((d * 5) >> 4)];
+ dst[offset + x + 10 * stride] = cm[dst[offset + x + 10 * stride] - ((d * 3) >> 4)];
+ dst[offset + x + 11 * stride] = cm[dst[offset + x + 11 * stride] - ((d * 1) >> 4)];
+ }
+ }
+ }
+ }
+}
+
+static void guess_mv(ERContext *s)
+{
+ uint8_t *fixed = s->er_temp_buffer;
+#define MV_FROZEN 3
+#define MV_CHANGED 2
+#define MV_UNCHANGED 1
+ const int mb_stride = s->mb_stride;
+ const int mb_width = s->mb_width;
+ const int mb_height = s->mb_height;
+ int i, depth, num_avail;
+ int mb_x, mb_y, mot_step, mot_stride;
+
+ set_mv_strides(s, &mot_step, &mot_stride);
+
+ num_avail = 0;
+ for (i = 0; i < s->mb_num; i++) {
+ const int mb_xy = s->mb_index2xy[i];
+ int f = 0;
+ int error = s->error_status_table[mb_xy];
+
+ if (IS_INTRA(s->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 <= mb_width / 2) {
+ for (mb_y = 0; mb_y < s->mb_height; mb_y++) {
+ for (mb_x = 0; mb_x < s->mb_width; mb_x++) {
+ const int mb_xy = mb_x + mb_y * s->mb_stride;
+ int mv_dir = (s->last_pic && 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;
+ }
+
+ for (depth = 0; ; depth++) {
+ int changed, pass, none_left;
+
+ none_left = 1;
+ changed = 1;
+ for (pass = 0; (changed || pass < 2) && pass < 10; pass++) {
+ int mb_x, mb_y;
+ int score_sum = 0;
+
+ changed = 0;
+ for (mb_y = 0; mb_y < s->mb_height; mb_y++) {
+ for (mb_x = 0; mb_x < s->mb_width; mb_x++) {
+ const int mb_xy = mb_x + mb_y * s->mb_stride;
+ int mv_predictor[8][2] = { { 0 } };
+ int ref[8] = { 0 };
+ int pred_count = 0;
+ int j;
+ int best_score = 256 * 256 * 256 * 64;
+ int best_pred = 0;
+ const int mot_index = (mb_x + mb_y * mot_stride) * mot_step;
+ int prev_x, prev_y, prev_ref;
+
+ if ((mb_x ^ mb_y ^ pass) & 1)
+ continue;
+
+ if (fixed[mb_xy] == MV_FROZEN)
+ continue;
+ av_assert1(!IS_INTRA(s->cur_pic->mb_type[mb_xy]));
+ av_assert1(s->last_pic && s->last_pic->f.data[0]);
+
+ j = 0;
+ if (mb_x > 0 && fixed[mb_xy - 1] == MV_FROZEN)
+ j = 1;
+ if (mb_x + 1 < mb_width && fixed[mb_xy + 1] == MV_FROZEN)
+ j = 1;
+ if (mb_y > 0 && fixed[mb_xy - mb_stride] == MV_FROZEN)
+ j = 1;
+ if (mb_y + 1 < mb_height && fixed[mb_xy + mb_stride] == MV_FROZEN)
+ j = 1;
+ if (j == 0)
+ continue;
+
+ j = 0;
+ if (mb_x > 0 && fixed[mb_xy - 1 ] == MV_CHANGED)
+ j = 1;
+ if (mb_x + 1 < mb_width && fixed[mb_xy + 1 ] == MV_CHANGED)
+ j = 1;
+ if (mb_y > 0 && fixed[mb_xy - mb_stride] == MV_CHANGED)
+ j = 1;
+ if (mb_y + 1 < mb_height && fixed[mb_xy + mb_stride] == MV_CHANGED)
+ j = 1;
+ if (j == 0 && pass > 1)
+ continue;
+
+ none_left = 0;
+
+ if (mb_x > 0 && fixed[mb_xy - 1]) {
+ mv_predictor[pred_count][0] =
+ s->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]) {
+ 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]) {
+ 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]) {
+ 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 */
+ pred_count++;
+
+ if (!fixed[mb_xy] && 0) {
+ if (s->avctx->codec_id == AV_CODEC_ID_H264) {
+ // FIXME
+ } else {
+ ff_thread_await_progress(&s->last_pic->tf,
+ mb_y, 0);
+ }
+ if (!s->last_pic->motion_val[0] ||
+ !s->last_pic->ref_index[0])
+ goto skip_last_mv;
+ prev_x = s->last_pic->motion_val[0][mot_index][0];
+ prev_y = s->last_pic->motion_val[0][mot_index][1];
+ prev_ref = s->last_pic->ref_index[0][4 * mb_xy];
+ } else {
+ 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++;
+
+skip_last_mv:
+
+ 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]) {
+ 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]) {
+ 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]) {
+ 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]) {
+ 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;
+ }
+ }
+ score_sum += best_score;
+ 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;
+
+ for (i = 0; i < s->mb_num; i++) {
+ int mb_xy = s->mb_index2xy[i];
+ if (fixed[mb_xy])
+ fixed[mb_xy] = MV_FROZEN;
+ }
+ }
+}
+
+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 || !s->last_pic->f.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 & ER_DC_ERROR) && (error & ER_MV_ERROR)))
+ undamaged_count++;
+ }
+
+ if (s->avctx->codec_id == AV_CODEC_ID_H264 && s->ref_count <= 0)
+ return 1;
+
+ if (undamaged_count < 5)
+ return 0; // almost all MBs damaged -> use temporal prediction
+
+ // prevent dsp.sad() check, that requires access to the image
+ if (CONFIG_MPEG_XVMC_DECODER &&
+ s->avctx->xvmc_acceleration &&
+ s->cur_pic->f.pict_type == AV_PICTURE_TYPE_I)
+ return 1;
+
+ 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->dsp->sad[0](NULL, last_mb_ptr, mb_ptr,
+ linesize[0], 16);
+ // FIXME need await_progress() here
+ is_intra_likely -= s->dsp->sad[0](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--;
+ }
+ }
+ }
+ // printf("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->err_recognition)
+ return;
+
+ memset(s->error_status_table, ER_MB_ERROR | VP_START | ER_MB_END,
+ s->mb_stride * s->mb_height * sizeof(uint8_t));
+ s->error_count = 3 * s->mb_num;
+ s->error_occurred = 0;
+}
+
+/**
+ * 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)
+ 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->err_recognition)
+ return;
+
+ mask &= ~VP_START;
+ if (status & (ER_AC_ERROR | ER_AC_END)) {
+ mask &= ~(ER_AC_ERROR | ER_AC_END);
+ s->error_count -= end_i - start_i + 1;
+ }
+ if (status & (ER_DC_ERROR | ER_DC_END)) {
+ mask &= ~(ER_DC_ERROR | ER_DC_END);
+ s->error_count -= end_i - start_i + 1;
+ }
+ if (status & (ER_MV_ERROR | ER_MV_END)) {
+ mask &= ~(ER_MV_ERROR | ER_MV_END);
+ s->error_count -= end_i - start_i + 1;
+ }
+
+ if (status & ER_MB_ERROR) {
+ s->error_occurred = 1;
+ 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->active_thread_type & FF_THREAD_SLICE) &&
+ 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;
+ s->error_count = INT_MAX;
+ }
+ }
+}
+
+void ff_er_frame_end(ERContext *s)
+{
+ int *linesize = s->cur_pic->f.linesize;
+ 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->err_recognition || s->error_count == 0 ||
+ s->avctx->lowres ||
+ s->avctx->hwaccel ||
+ s->avctx->codec->capabilities&CODEC_CAP_HWACCEL_VDPAU ||
+ !s->cur_pic || s->cur_pic->field_picture ||
+ s->error_count == 3 * s->mb_width *
+ (s->avctx->skip_top + s->avctx->skip_bottom)) {
+ return;
+ }
+ if (s->last_pic) {
+ 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");
+ s->last_pic = NULL;
+ }
+ }
+ if (s->next_pic) {
+ 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");
+ s->next_pic = NULL;
+ }
+ }
+
+ if (s->cur_pic->motion_val[0] == NULL) {
+ av_log(s->avctx, AV_LOG_ERROR, "Warning MVs not available\n");
+
+ for (i = 0; i < 2; i++) {
+ s->cur_pic->ref_index_buf[i] = av_buffer_allocz(s->mb_stride * s->mb_height * 4 * sizeof(uint8_t));
+ s->cur_pic->motion_val_buf[i] = av_buffer_allocz((size + 4) * 2 * sizeof(uint16_t));
+ if (!s->cur_pic->ref_index_buf[i] || !s->cur_pic->motion_val_buf[i])
+ break;
+ s->cur_pic->ref_index[i] = s->cur_pic->ref_index_buf[i]->data;
+ s->cur_pic->motion_val[i] = (int16_t (*)[2])s->cur_pic->motion_val_buf[i]->data + 4;
+ }
+ if (i < 2) {
+ for (i = 0; i < 2; i++) {
+ av_buffer_unref(&s->cur_pic->ref_index_buf[i]);
+ av_buffer_unref(&s->cur_pic->motion_val_buf[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[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];
+ 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];
+ 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));
+
+ 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 & 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 && s->last_pic->f.data[0]) &&
+ !(s->next_pic && 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 && s->last_pic->f.data[0]);
+ const int mv_dir = dir ? MV_DIR_BACKWARD : MV_DIR_FORWARD;
+ int mv_type;
+
+ 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 h264 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;
+
+ 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 && s->last_pic->f.data[0]))
+ mv_dir &= ~MV_DIR_FORWARD;
+ if (!(s->next_pic && 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);
+
+ /* the filters below are not XvMC compatible, skip them */
+ if (CONFIG_MPEG_XVMC_DECODER && s->avctx->xvmc_acceleration)
+ goto ec_clean;
+ /* 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;
+ }
+
+ 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];
+
+ 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];
+
+ 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);
+ 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);
+
+ /* 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);
+ 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);
+ }
+
+ec_clean:
+ /* 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->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;
+ }
+ s->mbintra_table[mb_xy] = 1;
+ }
+ s->cur_pic = NULL;
+ s->next_pic = NULL;
+ s->last_pic = NULL;
+}
generated by cgit v1.2.3 (git 2.39.1) at 2025-12-06 17:20:23 +0000