Statistics
| Branch: | Revision:

ffmpeg / libavcodec / error_resilience.c @ 5509bffa

History | View | Annotate | Download (38.2 KB)

1 4d2858de Michael Niedermayer
/*
2
 * Error resilience / concealment
3
 *
4 8f2ab833 Michael Niedermayer
 * Copyright (c) 2002-2004 Michael Niedermayer <michaelni@gmx.at>
5 4d2858de Michael Niedermayer
 *
6
 * This library is free software; you can redistribute it and/or
7
 * modify it under the terms of the GNU Lesser General Public
8
 * License as published by the Free Software Foundation; either
9
 * version 2 of the License, or (at your option) any later version.
10
 *
11
 * This library is distributed in the hope that it will be useful,
12
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
14
 * Lesser General Public License for more details.
15
 *
16
 * You should have received a copy of the GNU Lesser General Public
17
 * License along with this library; if not, write to the Free Software
18 5509bffa Diego Biurrun
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
19 4d2858de Michael Niedermayer
 */
20 115329f1 Diego Biurrun
21 983e3246 Michael Niedermayer
/**
22
 * @file error_resilience.c
23
 * Error resilience / concealment.
24
 */
25 4d2858de Michael Niedermayer
26 7bc9090a Michael Niedermayer
#include <limits.h>
27 115329f1 Diego Biurrun
28 4d2858de Michael Niedermayer
#include "avcodec.h"
29
#include "dsputil.h"
30
#include "mpegvideo.h"
31 46b4feec Michael Niedermayer
#include "common.h"
32 4d2858de Michael Niedermayer
33 7d1c3fc1 Michael Niedermayer
static void decode_mb(MpegEncContext *s){
34
    s->dest[0] = s->current_picture.data[0] + (s->mb_y * 16* s->linesize  ) + s->mb_x * 16;
35
    s->dest[1] = s->current_picture.data[1] + (s->mb_y * 8 * s->uvlinesize) + s->mb_x * 8;
36
    s->dest[2] = s->current_picture.data[2] + (s->mb_y * 8 * s->uvlinesize) + s->mb_x * 8;
37
38 115329f1 Diego Biurrun
    MPV_decode_mb(s, s->block);
39 7d1c3fc1 Michael Niedermayer
}
40
41 4d2858de Michael Niedermayer
/**
42
 * replaces the current MB with a flat dc only version.
43
 */
44
static void put_dc(MpegEncContext *s, uint8_t *dest_y, uint8_t *dest_cb, uint8_t *dest_cr, int mb_x, int mb_y)
45
{
46
    int dc, dcu, dcv, y, i;
47
    for(i=0; i<4; i++){
48 137c8468 Michael Niedermayer
        dc= s->dc_val[0][mb_x*2 + (i&1) + (mb_y*2 + (i>>1))*s->b8_stride];
49 4d2858de Michael Niedermayer
        if(dc<0) dc=0;
50
        else if(dc>2040) dc=2040;
51
        for(y=0; y<8; y++){
52
            int x;
53
            for(x=0; x<8; x++){
54
                dest_y[x + (i&1)*8 + (y + (i>>1)*8)*s->linesize]= dc/8;
55
            }
56
        }
57
    }
58 137c8468 Michael Niedermayer
    dcu = s->dc_val[1][mb_x + mb_y*s->mb_stride];
59
    dcv = s->dc_val[2][mb_x + mb_y*s->mb_stride];
60 4d2858de Michael Niedermayer
    if     (dcu<0   ) dcu=0;
61
    else if(dcu>2040) dcu=2040;
62
    if     (dcv<0   ) dcv=0;
63
    else if(dcv>2040) dcv=2040;
64
    for(y=0; y<8; y++){
65
        int x;
66
        for(x=0; x<8; x++){
67
            dest_cb[x + y*(s->uvlinesize)]= dcu/8;
68
            dest_cr[x + y*(s->uvlinesize)]= dcv/8;
69
        }
70
    }
71
}
72
73 0c1a9eda Zdenek Kabelac
static void filter181(int16_t *data, int width, int height, int stride){
74 4d2858de Michael Niedermayer
    int x,y;
75
76
    /* horizontal filter */
77
    for(y=1; y<height-1; y++){
78
        int prev_dc= data[0 + y*stride];
79
80
        for(x=1; x<width-1; x++){
81
            int dc;
82 115329f1 Diego Biurrun
83
            dc= - prev_dc
84 4d2858de Michael Niedermayer
                + data[x     + y*stride]*8
85
                - data[x + 1 + y*stride];
86
            dc= (dc*10923 + 32768)>>16;
87
            prev_dc= data[x + y*stride];
88
            data[x + y*stride]= dc;
89
        }
90
    }
91 115329f1 Diego Biurrun
92 4d2858de Michael Niedermayer
    /* vertical filter */
93
    for(x=1; x<width-1; x++){
94
        int prev_dc= data[x];
95
96
        for(y=1; y<height-1; y++){
97
            int dc;
98 115329f1 Diego Biurrun
99
            dc= - prev_dc
100 4d2858de Michael Niedermayer
                + data[x +  y   *stride]*8
101
                - data[x + (y+1)*stride];
102
            dc= (dc*10923 + 32768)>>16;
103
            prev_dc= data[x + y*stride];
104
            data[x + y*stride]= dc;
105
        }
106
    }
107
}
108
109
/**
110
 * guess the dc of blocks which dont have a undamaged dc
111 bb270c08 Diego Biurrun
 * @param w     width in 8 pixel blocks
112
 * @param h     height in 8 pixel blocks
113 4d2858de Michael Niedermayer
 */
114 0c1a9eda Zdenek Kabelac
static void guess_dc(MpegEncContext *s, int16_t *dc, int w, int h, int stride, int is_luma){
115 4d2858de Michael Niedermayer
    int b_x, b_y;
116
117
    for(b_y=0; b_y<h; b_y++){
118
        for(b_x=0; b_x<w; b_x++){
119
            int color[4]={1024,1024,1024,1024};
120
            int distance[4]={9999,9999,9999,9999};
121
            int mb_index, error, j;
122 0c1a9eda Zdenek Kabelac
            int64_t guess, weight_sum;
123 115329f1 Diego Biurrun
124 7bc9090a Michael Niedermayer
            mb_index= (b_x>>is_luma) + (b_y>>is_luma)*s->mb_stride;
125 115329f1 Diego Biurrun
126 4d2858de Michael Niedermayer
            error= s->error_status_table[mb_index];
127 115329f1 Diego Biurrun
128 7bc9090a Michael Niedermayer
            if(IS_INTER(s->current_picture.mb_type[mb_index])) continue; //inter
129 4d2858de Michael Niedermayer
            if(!(error&DC_ERROR)) continue;           //dc-ok
130 115329f1 Diego Biurrun
131 4d2858de Michael Niedermayer
            /* right block */
132
            for(j=b_x+1; j<w; j++){
133 7bc9090a Michael Niedermayer
                int mb_index_j= (j>>is_luma) + (b_y>>is_luma)*s->mb_stride;
134 4d2858de Michael Niedermayer
                int error_j= s->error_status_table[mb_index_j];
135 7bc9090a Michael Niedermayer
                int intra_j= IS_INTRA(s->current_picture.mb_type[mb_index_j]);
136 4d2858de Michael Niedermayer
                if(intra_j==0 || !(error_j&DC_ERROR)){
137
                    color[0]= dc[j + b_y*stride];
138
                    distance[0]= j-b_x;
139
                    break;
140
                }
141
            }
142 115329f1 Diego Biurrun
143 4d2858de Michael Niedermayer
            /* left block */
144
            for(j=b_x-1; j>=0; j--){
145 7bc9090a Michael Niedermayer
                int mb_index_j= (j>>is_luma) + (b_y>>is_luma)*s->mb_stride;
146 4d2858de Michael Niedermayer
                int error_j= s->error_status_table[mb_index_j];
147 7bc9090a Michael Niedermayer
                int intra_j= IS_INTRA(s->current_picture.mb_type[mb_index_j]);
148 4d2858de Michael Niedermayer
                if(intra_j==0 || !(error_j&DC_ERROR)){
149
                    color[1]= dc[j + b_y*stride];
150
                    distance[1]= b_x-j;
151
                    break;
152
                }
153
            }
154
155
            /* bottom block */
156
            for(j=b_y+1; j<h; j++){
157 7bc9090a Michael Niedermayer
                int mb_index_j= (b_x>>is_luma) + (j>>is_luma)*s->mb_stride;
158 4d2858de Michael Niedermayer
                int error_j= s->error_status_table[mb_index_j];
159 7bc9090a Michael Niedermayer
                int intra_j= IS_INTRA(s->current_picture.mb_type[mb_index_j]);
160 4d2858de Michael Niedermayer
                if(intra_j==0 || !(error_j&DC_ERROR)){
161
                    color[2]= dc[b_x + j*stride];
162
                    distance[2]= j-b_y;
163
                    break;
164
                }
165
            }
166
167
            /* top block */
168
            for(j=b_y-1; j>=0; j--){
169 7bc9090a Michael Niedermayer
                int mb_index_j= (b_x>>is_luma) + (j>>is_luma)*s->mb_stride;
170 4d2858de Michael Niedermayer
                int error_j= s->error_status_table[mb_index_j];
171 7bc9090a Michael Niedermayer
                int intra_j= IS_INTRA(s->current_picture.mb_type[mb_index_j]);
172 4d2858de Michael Niedermayer
                if(intra_j==0 || !(error_j&DC_ERROR)){
173
                    color[3]= dc[b_x + j*stride];
174
                    distance[3]= b_y-j;
175
                    break;
176
                }
177
            }
178 115329f1 Diego Biurrun
179 4d2858de Michael Niedermayer
            weight_sum=0;
180
            guess=0;
181
            for(j=0; j<4; j++){
182 0c1a9eda Zdenek Kabelac
                int64_t weight= 256*256*256*16/distance[j];
183
                guess+= weight*(int64_t)color[j];
184 4d2858de Michael Niedermayer
                weight_sum+= weight;
185
            }
186
            guess= (guess + weight_sum/2) / weight_sum;
187
188
            dc[b_x + b_y*stride]= guess;
189
        }
190
    }
191
}
192
193
/**
194
 * simple horizontal deblocking filter used for error resilience
195 bb270c08 Diego Biurrun
 * @param w     width in 8 pixel blocks
196
 * @param h     height in 8 pixel blocks
197 4d2858de Michael Niedermayer
 */
198 0c1a9eda Zdenek Kabelac
static void h_block_filter(MpegEncContext *s, uint8_t *dst, int w, int h, int stride, int is_luma){
199 4d2858de Michael Niedermayer
    int b_x, b_y;
200 0c1a9eda Zdenek Kabelac
    uint8_t *cm = cropTbl + MAX_NEG_CROP;
201 4d2858de Michael Niedermayer
202
    for(b_y=0; b_y<h; b_y++){
203
        for(b_x=0; b_x<w-1; b_x++){
204
            int y;
205 7bc9090a Michael Niedermayer
            int left_status = s->error_status_table[( b_x   >>is_luma) + (b_y>>is_luma)*s->mb_stride];
206
            int right_status= s->error_status_table[((b_x+1)>>is_luma) + (b_y>>is_luma)*s->mb_stride];
207
            int left_intra=   IS_INTRA(s->current_picture.mb_type      [( b_x   >>is_luma) + (b_y>>is_luma)*s->mb_stride]);
208
            int right_intra=  IS_INTRA(s->current_picture.mb_type      [((b_x+1)>>is_luma) + (b_y>>is_luma)*s->mb_stride]);
209 4d2858de Michael Niedermayer
            int left_damage =  left_status&(DC_ERROR|AC_ERROR|MV_ERROR);
210
            int right_damage= right_status&(DC_ERROR|AC_ERROR|MV_ERROR);
211
            int offset= b_x*8 + b_y*stride*8;
212 137c8468 Michael Niedermayer
            int16_t *left_mv=  s->current_picture.motion_val[0][s->b8_stride*(b_y<<(1-is_luma)) + ( b_x   <<(1-is_luma))];
213
            int16_t *right_mv= s->current_picture.motion_val[0][s->b8_stride*(b_y<<(1-is_luma)) + ((b_x+1)<<(1-is_luma))];
214 115329f1 Diego Biurrun
215 4d2858de Michael Niedermayer
            if(!(left_damage||right_damage)) continue; // both undamaged
216 115329f1 Diego Biurrun
217
            if(   (!left_intra) && (!right_intra)
218 4d2858de Michael Niedermayer
               && ABS(left_mv[0]-right_mv[0]) + ABS(left_mv[1]+right_mv[1]) < 2) continue;
219 115329f1 Diego Biurrun
220 4d2858de Michael Niedermayer
            for(y=0; y<8; y++){
221
                int a,b,c,d;
222 115329f1 Diego Biurrun
223 4d2858de Michael Niedermayer
                a= dst[offset + 7 + y*stride] - dst[offset + 6 + y*stride];
224
                b= dst[offset + 8 + y*stride] - dst[offset + 7 + y*stride];
225
                c= dst[offset + 9 + y*stride] - dst[offset + 8 + y*stride];
226 115329f1 Diego Biurrun
227 4d2858de Michael Niedermayer
                d= ABS(b) - ((ABS(a) + ABS(c) + 1)>>1);
228 b8a78f41 Michael Niedermayer
                d= FFMAX(d, 0);
229 4d2858de Michael Niedermayer
                if(b<0) d= -d;
230 115329f1 Diego Biurrun
231 4d2858de Michael Niedermayer
                if(d==0) continue;
232
233
                if(!(left_damage && right_damage))
234
                    d= d*16/9;
235 115329f1 Diego Biurrun
236 4d2858de Michael Niedermayer
                if(left_damage){
237
                    dst[offset + 7 + y*stride] = cm[dst[offset + 7 + y*stride] + ((d*7)>>4)];
238
                    dst[offset + 6 + y*stride] = cm[dst[offset + 6 + y*stride] + ((d*5)>>4)];
239
                    dst[offset + 5 + y*stride] = cm[dst[offset + 5 + y*stride] + ((d*3)>>4)];
240
                    dst[offset + 4 + y*stride] = cm[dst[offset + 4 + y*stride] + ((d*1)>>4)];
241
                }
242
                if(right_damage){
243
                    dst[offset + 8 + y*stride] = cm[dst[offset + 8 + y*stride] - ((d*7)>>4)];
244
                    dst[offset + 9 + y*stride] = cm[dst[offset + 9 + y*stride] - ((d*5)>>4)];
245
                    dst[offset + 10+ y*stride] = cm[dst[offset +10 + y*stride] - ((d*3)>>4)];
246
                    dst[offset + 11+ y*stride] = cm[dst[offset +11 + y*stride] - ((d*1)>>4)];
247
                }
248
            }
249
        }
250
    }
251
}
252
253
/**
254
 * simple vertical deblocking filter used for error resilience
255 bb270c08 Diego Biurrun
 * @param w     width in 8 pixel blocks
256
 * @param h     height in 8 pixel blocks
257 4d2858de Michael Niedermayer
 */
258 0c1a9eda Zdenek Kabelac
static void v_block_filter(MpegEncContext *s, uint8_t *dst, int w, int h, int stride, int is_luma){
259 4d2858de Michael Niedermayer
    int b_x, b_y;
260 0c1a9eda Zdenek Kabelac
    uint8_t *cm = cropTbl + MAX_NEG_CROP;
261 4d2858de Michael Niedermayer
262
    for(b_y=0; b_y<h-1; b_y++){
263
        for(b_x=0; b_x<w; b_x++){
264
            int x;
265 7bc9090a Michael Niedermayer
            int top_status   = s->error_status_table[(b_x>>is_luma) + ( b_y   >>is_luma)*s->mb_stride];
266
            int bottom_status= s->error_status_table[(b_x>>is_luma) + ((b_y+1)>>is_luma)*s->mb_stride];
267
            int top_intra=     IS_INTRA(s->current_picture.mb_type      [(b_x>>is_luma) + ( b_y   >>is_luma)*s->mb_stride]);
268
            int bottom_intra=  IS_INTRA(s->current_picture.mb_type      [(b_x>>is_luma) + ((b_y+1)>>is_luma)*s->mb_stride]);
269 4d2858de Michael Niedermayer
            int top_damage =      top_status&(DC_ERROR|AC_ERROR|MV_ERROR);
270
            int bottom_damage= bottom_status&(DC_ERROR|AC_ERROR|MV_ERROR);
271
            int offset= b_x*8 + b_y*stride*8;
272 137c8468 Michael Niedermayer
            int16_t *top_mv=    s->current_picture.motion_val[0][s->b8_stride*( b_y   <<(1-is_luma)) + (b_x<<(1-is_luma))];
273
            int16_t *bottom_mv= s->current_picture.motion_val[0][s->b8_stride*((b_y+1)<<(1-is_luma)) + (b_x<<(1-is_luma))];
274 115329f1 Diego Biurrun
275 4d2858de Michael Niedermayer
            if(!(top_damage||bottom_damage)) continue; // both undamaged
276 115329f1 Diego Biurrun
277
            if(   (!top_intra) && (!bottom_intra)
278 4d2858de Michael Niedermayer
               && ABS(top_mv[0]-bottom_mv[0]) + ABS(top_mv[1]+bottom_mv[1]) < 2) continue;
279 115329f1 Diego Biurrun
280 4d2858de Michael Niedermayer
            for(x=0; x<8; x++){
281
                int a,b,c,d;
282 115329f1 Diego Biurrun
283 4d2858de Michael Niedermayer
                a= dst[offset + x + 7*stride] - dst[offset + x + 6*stride];
284
                b= dst[offset + x + 8*stride] - dst[offset + x + 7*stride];
285
                c= dst[offset + x + 9*stride] - dst[offset + x + 8*stride];
286 115329f1 Diego Biurrun
287 4d2858de Michael Niedermayer
                d= ABS(b) - ((ABS(a) + ABS(c)+1)>>1);
288 b8a78f41 Michael Niedermayer
                d= FFMAX(d, 0);
289 4d2858de Michael Niedermayer
                if(b<0) d= -d;
290 115329f1 Diego Biurrun
291 4d2858de Michael Niedermayer
                if(d==0) continue;
292
293
                if(!(top_damage && bottom_damage))
294
                    d= d*16/9;
295 115329f1 Diego Biurrun
296 4d2858de Michael Niedermayer
                if(top_damage){
297
                    dst[offset + x +  7*stride] = cm[dst[offset + x +  7*stride] + ((d*7)>>4)];
298
                    dst[offset + x +  6*stride] = cm[dst[offset + x +  6*stride] + ((d*5)>>4)];
299
                    dst[offset + x +  5*stride] = cm[dst[offset + x +  5*stride] + ((d*3)>>4)];
300
                    dst[offset + x +  4*stride] = cm[dst[offset + x +  4*stride] + ((d*1)>>4)];
301
                }
302
                if(bottom_damage){
303
                    dst[offset + x +  8*stride] = cm[dst[offset + x +  8*stride] - ((d*7)>>4)];
304
                    dst[offset + x +  9*stride] = cm[dst[offset + x +  9*stride] - ((d*5)>>4)];
305
                    dst[offset + x + 10*stride] = cm[dst[offset + x + 10*stride] - ((d*3)>>4)];
306
                    dst[offset + x + 11*stride] = cm[dst[offset + x + 11*stride] - ((d*1)>>4)];
307
                }
308
            }
309
        }
310
    }
311
}
312
313
static void guess_mv(MpegEncContext *s){
314 7bc9090a Michael Niedermayer
    uint8_t fixed[s->mb_stride * s->mb_height];
315 4d2858de Michael Niedermayer
#define MV_FROZEN    3
316
#define MV_CHANGED   2
317
#define MV_UNCHANGED 1
318 7bc9090a Michael Niedermayer
    const int mb_stride = s->mb_stride;
319 4d2858de Michael Niedermayer
    const int mb_width = s->mb_width;
320
    const int mb_height= s->mb_height;
321
    int i, depth, num_avail;
322 7bc9090a Michael Niedermayer
    int mb_x, mb_y;
323 115329f1 Diego Biurrun
324 4d2858de Michael Niedermayer
    num_avail=0;
325
    for(i=0; i<s->mb_num; i++){
326 7bc9090a Michael Niedermayer
        const int mb_xy= s->mb_index2xy[ i ];
327 4d2858de Michael Niedermayer
        int f=0;
328 7bc9090a Michael Niedermayer
        int error= s->error_status_table[mb_xy];
329 4d2858de Michael Niedermayer
330 7bc9090a Michael Niedermayer
        if(IS_INTRA(s->current_picture.mb_type[mb_xy])) f=MV_FROZEN; //intra //FIXME check
331 4d2858de Michael Niedermayer
        if(!(error&MV_ERROR)) f=MV_FROZEN;           //inter with undamaged MV
332 115329f1 Diego Biurrun
333 7bc9090a Michael Niedermayer
        fixed[mb_xy]= f;
334 4d2858de Michael Niedermayer
        if(f==MV_FROZEN)
335
            num_avail++;
336
    }
337 115329f1 Diego Biurrun
338 4d2858de Michael Niedermayer
    if((!(s->avctx->error_concealment&FF_EC_GUESS_MVS)) || num_avail <= mb_width/2){
339
        for(mb_y=0; mb_y<s->mb_height; mb_y++){
340
            for(mb_x=0; mb_x<s->mb_width; mb_x++){
341 7bc9090a Michael Niedermayer
                const int mb_xy= mb_x + mb_y*s->mb_stride;
342 115329f1 Diego Biurrun
343 7bc9090a Michael Niedermayer
                if(IS_INTRA(s->current_picture.mb_type[mb_xy]))  continue;
344
                if(!(s->error_status_table[mb_xy]&MV_ERROR)) continue;
345 4d2858de Michael Niedermayer
346
                s->mv_dir = MV_DIR_FORWARD;
347
                s->mb_intra=0;
348
                s->mv_type = MV_TYPE_16X16;
349 160d679c Mike Melanson
                s->mb_skipped=0;
350 4d2858de Michael Niedermayer
351 bb270c08 Diego Biurrun
                s->dsp.clear_blocks(s->block[0]);
352 4d2858de Michael Niedermayer
353
                s->mb_x= mb_x;
354
                s->mb_y= mb_y;
355
                s->mv[0][0][0]= 0;
356
                s->mv[0][0][1]= 0;
357 7d1c3fc1 Michael Niedermayer
                decode_mb(s);
358 4d2858de Michael Niedermayer
            }
359
        }
360
        return;
361
    }
362 115329f1 Diego Biurrun
363 4d2858de Michael Niedermayer
    for(depth=0;; depth++){
364
        int changed, pass, none_left;
365
366
        none_left=1;
367
        changed=1;
368
        for(pass=0; (changed || pass<2) && pass<10; pass++){
369 7bc9090a Michael Niedermayer
            int mb_x, mb_y;
370 4d2858de Michael Niedermayer
int score_sum=0;
371 115329f1 Diego Biurrun
372 4d2858de Michael Niedermayer
            changed=0;
373
            for(mb_y=0; mb_y<s->mb_height; mb_y++){
374
                for(mb_x=0; mb_x<s->mb_width; mb_x++){
375 7bc9090a Michael Niedermayer
                    const int mb_xy= mb_x + mb_y*s->mb_stride;
376 4d2858de Michael Niedermayer
                    int mv_predictor[8][2]={{0}};
377
                    int pred_count=0;
378
                    int j;
379
                    int best_score=256*256*256*64;
380
                    int best_pred=0;
381 137c8468 Michael Niedermayer
                    const int mot_stride= s->b8_stride;
382
                    const int mot_index= mb_x*2 + mb_y*2*mot_stride;
383 8d7ec294 Wolfgang Hesseler
                    int prev_x= s->current_picture.motion_val[0][mot_index][0];
384
                    int prev_y= s->current_picture.motion_val[0][mot_index][1];
385 4d2858de Michael Niedermayer
386
                    if((mb_x^mb_y^pass)&1) continue;
387 115329f1 Diego Biurrun
388 7bc9090a Michael Niedermayer
                    if(fixed[mb_xy]==MV_FROZEN) continue;
389
                    assert(!IS_INTRA(s->current_picture.mb_type[mb_xy]));
390
                    assert(s->last_picture_ptr && s->last_picture_ptr->data[0]);
391 115329f1 Diego Biurrun
392 4d2858de Michael Niedermayer
                    j=0;
393 7bc9090a Michael Niedermayer
                    if(mb_x>0           && fixed[mb_xy-1        ]==MV_FROZEN) j=1;
394
                    if(mb_x+1<mb_width  && fixed[mb_xy+1        ]==MV_FROZEN) j=1;
395
                    if(mb_y>0           && fixed[mb_xy-mb_stride]==MV_FROZEN) j=1;
396
                    if(mb_y+1<mb_height && fixed[mb_xy+mb_stride]==MV_FROZEN) j=1;
397 4d2858de Michael Niedermayer
                    if(j==0) continue;
398
399
                    j=0;
400 7bc9090a Michael Niedermayer
                    if(mb_x>0           && fixed[mb_xy-1        ]==MV_CHANGED) j=1;
401
                    if(mb_x+1<mb_width  && fixed[mb_xy+1        ]==MV_CHANGED) j=1;
402
                    if(mb_y>0           && fixed[mb_xy-mb_stride]==MV_CHANGED) j=1;
403
                    if(mb_y+1<mb_height && fixed[mb_xy+mb_stride]==MV_CHANGED) j=1;
404 4d2858de Michael Niedermayer
                    if(j==0 && pass>1) continue;
405 115329f1 Diego Biurrun
406 4d2858de Michael Niedermayer
                    none_left=0;
407 115329f1 Diego Biurrun
408 7bc9090a Michael Niedermayer
                    if(mb_x>0 && fixed[mb_xy-1]){
409 8d7ec294 Wolfgang Hesseler
                        mv_predictor[pred_count][0]= s->current_picture.motion_val[0][mot_index - 2][0];
410
                        mv_predictor[pred_count][1]= s->current_picture.motion_val[0][mot_index - 2][1];
411 4d2858de Michael Niedermayer
                        pred_count++;
412
                    }
413 7bc9090a Michael Niedermayer
                    if(mb_x+1<mb_width && fixed[mb_xy+1]){
414 8d7ec294 Wolfgang Hesseler
                        mv_predictor[pred_count][0]= s->current_picture.motion_val[0][mot_index + 2][0];
415
                        mv_predictor[pred_count][1]= s->current_picture.motion_val[0][mot_index + 2][1];
416 4d2858de Michael Niedermayer
                        pred_count++;
417
                    }
418 7bc9090a Michael Niedermayer
                    if(mb_y>0 && fixed[mb_xy-mb_stride]){
419 8d7ec294 Wolfgang Hesseler
                        mv_predictor[pred_count][0]= s->current_picture.motion_val[0][mot_index - mot_stride*2][0];
420
                        mv_predictor[pred_count][1]= s->current_picture.motion_val[0][mot_index - mot_stride*2][1];
421 4d2858de Michael Niedermayer
                        pred_count++;
422
                    }
423 7bc9090a Michael Niedermayer
                    if(mb_y+1<mb_height && fixed[mb_xy+mb_stride]){
424 8d7ec294 Wolfgang Hesseler
                        mv_predictor[pred_count][0]= s->current_picture.motion_val[0][mot_index + mot_stride*2][0];
425
                        mv_predictor[pred_count][1]= s->current_picture.motion_val[0][mot_index + mot_stride*2][1];
426 4d2858de Michael Niedermayer
                        pred_count++;
427
                    }
428
                    if(pred_count==0) continue;
429 115329f1 Diego Biurrun
430 4d2858de Michael Niedermayer
                    if(pred_count>1){
431
                        int sum_x=0, sum_y=0;
432
                        int max_x, max_y, min_x, min_y;
433
434
                        for(j=0; j<pred_count; j++){
435
                            sum_x+= mv_predictor[j][0];
436
                            sum_y+= mv_predictor[j][1];
437
                        }
438 115329f1 Diego Biurrun
439 4d2858de Michael Niedermayer
                        /* mean */
440
                        mv_predictor[pred_count][0] = sum_x/j;
441
                        mv_predictor[pred_count][1] = sum_y/j;
442 115329f1 Diego Biurrun
443 4d2858de Michael Niedermayer
                        /* median */
444
                        if(pred_count>=3){
445
                            min_y= min_x= 99999;
446
                            max_y= max_x=-99999;
447
                        }else{
448
                            min_x=min_y=max_x=max_y=0;
449
                        }
450
                        for(j=0; j<pred_count; j++){
451 b8a78f41 Michael Niedermayer
                            max_x= FFMAX(max_x, mv_predictor[j][0]);
452
                            max_y= FFMAX(max_y, mv_predictor[j][1]);
453
                            min_x= FFMIN(min_x, mv_predictor[j][0]);
454
                            min_y= FFMIN(min_y, mv_predictor[j][1]);
455 4d2858de Michael Niedermayer
                        }
456
                        mv_predictor[pred_count+1][0] = sum_x - max_x - min_x;
457
                        mv_predictor[pred_count+1][1] = sum_y - max_y - min_y;
458 115329f1 Diego Biurrun
459 4d2858de Michael Niedermayer
                        if(pred_count==4){
460
                            mv_predictor[pred_count+1][0] /= 2;
461
                            mv_predictor[pred_count+1][1] /= 2;
462
                        }
463
                        pred_count+=2;
464
                    }
465 115329f1 Diego Biurrun
466 4d2858de Michael Niedermayer
                    /* zero MV */
467
                    pred_count++;
468
469
                    /* last MV */
470 8d7ec294 Wolfgang Hesseler
                    mv_predictor[pred_count][0]= s->current_picture.motion_val[0][mot_index][0];
471
                    mv_predictor[pred_count][1]= s->current_picture.motion_val[0][mot_index][1];
472 115329f1 Diego Biurrun
                    pred_count++;
473
474 4d2858de Michael Niedermayer
                    s->mv_dir = MV_DIR_FORWARD;
475
                    s->mb_intra=0;
476
                    s->mv_type = MV_TYPE_16X16;
477 160d679c Mike Melanson
                    s->mb_skipped=0;
478 4d2858de Michael Niedermayer
479 bb270c08 Diego Biurrun
                    s->dsp.clear_blocks(s->block[0]);
480 4d2858de Michael Niedermayer
481
                    s->mb_x= mb_x;
482
                    s->mb_y= mb_y;
483 7bc9090a Michael Niedermayer
484 4d2858de Michael Niedermayer
                    for(j=0; j<pred_count; j++){
485
                        int score=0;
486 0c1a9eda Zdenek Kabelac
                        uint8_t *src= s->current_picture.data[0] + mb_x*16 + mb_y*16*s->linesize;
487 4d2858de Michael Niedermayer
488 8d7ec294 Wolfgang Hesseler
                        s->current_picture.motion_val[0][mot_index][0]= s->mv[0][0][0]= mv_predictor[j][0];
489
                        s->current_picture.motion_val[0][mot_index][1]= s->mv[0][0][1]= mv_predictor[j][1];
490 7bc9090a Michael Niedermayer
491 7d1c3fc1 Michael Niedermayer
                        decode_mb(s);
492 115329f1 Diego Biurrun
493 7bc9090a Michael Niedermayer
                        if(mb_x>0 && fixed[mb_xy-1]){
494 4d2858de Michael Niedermayer
                            int k;
495
                            for(k=0; k<16; k++)
496
                                score += ABS(src[k*s->linesize-1 ]-src[k*s->linesize   ]);
497
                        }
498 7bc9090a Michael Niedermayer
                        if(mb_x+1<mb_width && fixed[mb_xy+1]){
499 4d2858de Michael Niedermayer
                            int k;
500
                            for(k=0; k<16; k++)
501
                                score += ABS(src[k*s->linesize+15]-src[k*s->linesize+16]);
502
                        }
503 7bc9090a Michael Niedermayer
                        if(mb_y>0 && fixed[mb_xy-mb_stride]){
504 4d2858de Michael Niedermayer
                            int k;
505
                            for(k=0; k<16; k++)
506
                                score += ABS(src[k-s->linesize   ]-src[k               ]);
507
                        }
508 7bc9090a Michael Niedermayer
                        if(mb_y+1<mb_height && fixed[mb_xy+mb_stride]){
509 4d2858de Michael Niedermayer
                            int k;
510
                            for(k=0; k<16; k++)
511
                                score += ABS(src[k+s->linesize*15]-src[k+s->linesize*16]);
512
                        }
513 115329f1 Diego Biurrun
514 4d2858de Michael Niedermayer
                        if(score <= best_score){ // <= will favor the last MV
515
                            best_score= score;
516
                            best_pred= j;
517
                        }
518
                    }
519
score_sum+= best_score;
520 8d7ec294 Wolfgang Hesseler
//FIXME no need to set s->current_picture.motion_val[0][mot_index][0] explicit
521
                    s->current_picture.motion_val[0][mot_index][0]= s->mv[0][0][0]= mv_predictor[best_pred][0];
522
                    s->current_picture.motion_val[0][mot_index][1]= s->mv[0][0][1]= mv_predictor[best_pred][1];
523 4d2858de Michael Niedermayer
524 7d1c3fc1 Michael Niedermayer
                    decode_mb(s);
525 4d2858de Michael Niedermayer
526 115329f1 Diego Biurrun
527 4d2858de Michael Niedermayer
                    if(s->mv[0][0][0] != prev_x || s->mv[0][0][1] != prev_y){
528 7bc9090a Michael Niedermayer
                        fixed[mb_xy]=MV_CHANGED;
529 4d2858de Michael Niedermayer
                        changed++;
530
                    }else
531 7bc9090a Michael Niedermayer
                        fixed[mb_xy]=MV_UNCHANGED;
532 4d2858de Michael Niedermayer
                }
533
            }
534
535
//            printf(".%d/%d", changed, score_sum); fflush(stdout);
536
        }
537 115329f1 Diego Biurrun
538
        if(none_left)
539 4d2858de Michael Niedermayer
            return;
540 115329f1 Diego Biurrun
541 4d2858de Michael Niedermayer
        for(i=0; i<s->mb_num; i++){
542 7bc9090a Michael Niedermayer
            int mb_xy= s->mb_index2xy[i];
543
            if(fixed[mb_xy])
544
                fixed[mb_xy]=MV_FROZEN;
545 4d2858de Michael Niedermayer
        }
546
//        printf(":"); fflush(stdout);
547
    }
548
}
549 115329f1 Diego Biurrun
550 4d2858de Michael Niedermayer
static int is_intra_more_likely(MpegEncContext *s){
551
    int is_intra_likely, i, j, undamaged_count, skip_amount, mb_x, mb_y;
552 115329f1 Diego Biurrun
553 b536d0aa Michael Niedermayer
    if(s->last_picture_ptr==NULL) return 1; //no previous frame available -> use spatial prediction
554 4d2858de Michael Niedermayer
555
    undamaged_count=0;
556
    for(i=0; i<s->mb_num; i++){
557 7bc9090a Michael Niedermayer
        const int mb_xy= s->mb_index2xy[i];
558
        const int error= s->error_status_table[mb_xy];
559 4d2858de Michael Niedermayer
        if(!((error&DC_ERROR) && (error&MV_ERROR)))
560
            undamaged_count++;
561
    }
562 115329f1 Diego Biurrun
563 4d2858de Michael Niedermayer
    if(undamaged_count < 5) return 0; //allmost all MBs damaged -> use temporal prediction
564 115329f1 Diego Biurrun
565
    skip_amount= FFMAX(undamaged_count/50, 1); //check only upto 50 MBs
566 4d2858de Michael Niedermayer
    is_intra_likely=0;
567
568
    j=0;
569
    for(mb_y= 0; mb_y<s->mb_height-1; mb_y++){
570
        for(mb_x= 0; mb_x<s->mb_width; mb_x++){
571
            int error;
572 7bc9090a Michael Niedermayer
            const int mb_xy= mb_x + mb_y*s->mb_stride;
573 4d2858de Michael Niedermayer
574 7bc9090a Michael Niedermayer
            error= s->error_status_table[mb_xy];
575 4d2858de Michael Niedermayer
            if((error&DC_ERROR) && (error&MV_ERROR))
576
                continue; //skip damaged
577 115329f1 Diego Biurrun
578
            j++;
579 4d2858de Michael Niedermayer
            if((j%skip_amount) != 0) continue; //skip a few to speed things up
580 115329f1 Diego Biurrun
581 4d2858de Michael Niedermayer
            if(s->pict_type==I_TYPE){
582 0c1a9eda Zdenek Kabelac
                uint8_t *mb_ptr     = s->current_picture.data[0] + mb_x*16 + mb_y*16*s->linesize;
583
                uint8_t *last_mb_ptr= s->last_picture.data   [0] + mb_x*16 + mb_y*16*s->linesize;
584 115329f1 Diego Biurrun
585 bb270c08 Diego Biurrun
                is_intra_likely += s->dsp.sad[0](NULL, last_mb_ptr, mb_ptr                    , s->linesize, 16);
586 bb198e19 Michael Niedermayer
                is_intra_likely -= s->dsp.sad[0](NULL, last_mb_ptr, last_mb_ptr+s->linesize*16, s->linesize, 16);
587 4d2858de Michael Niedermayer
            }else{
588 7bc9090a Michael Niedermayer
                if(IS_INTRA(s->current_picture.mb_type[mb_xy]))
589 4d2858de Michael Niedermayer
                   is_intra_likely++;
590
                else
591
                   is_intra_likely--;
592
            }
593
        }
594
    }
595
//printf("is_intra_likely: %d type:%d\n", is_intra_likely, s->pict_type);
596 115329f1 Diego Biurrun
    return is_intra_likely > 0;
597 4d2858de Michael Niedermayer
}
598
599 46b4feec Michael Niedermayer
void ff_er_frame_start(MpegEncContext *s){
600
    if(!s->error_resilience) return;
601
602 7bc9090a Michael Niedermayer
    memset(s->error_status_table, MV_ERROR|AC_ERROR|DC_ERROR|VP_START|AC_END|DC_END|MV_END, s->mb_stride*s->mb_height*sizeof(uint8_t));
603
    s->error_count= 3*s->mb_num;
604 46b4feec Michael Niedermayer
}
605
606
/**
607
 * adds a slice.
608
 * @param endx x component of the last macroblock, can be -1 for the last of the previous line
609
 * @param status the status at the end (MV_END, AC_ERROR, ...), it is assumed that no earlier end or
610
 *               error of the same type occured
611
 */
612
void ff_er_add_slice(MpegEncContext *s, int startx, int starty, int endx, int endy, int status){
613 7bc9090a Michael Niedermayer
    const int start_i= clip(startx + starty * s->mb_width    , 0, s->mb_num-1);
614
    const int end_i  = clip(endx   + endy   * s->mb_width    , 0, s->mb_num);
615
    const int start_xy= s->mb_index2xy[start_i];
616
    const int end_xy  = s->mb_index2xy[end_i];
617 46b4feec Michael Niedermayer
    int mask= -1;
618 115329f1 Diego Biurrun
619 46b4feec Michael Niedermayer
    if(!s->error_resilience) return;
620
621
    mask &= ~VP_START;
622 7bc9090a Michael Niedermayer
    if(status & (AC_ERROR|AC_END)){
623
        mask &= ~(AC_ERROR|AC_END);
624
        s->error_count -= end_i - start_i + 1;
625
    }
626
    if(status & (DC_ERROR|DC_END)){
627
        mask &= ~(DC_ERROR|DC_END);
628
        s->error_count -= end_i - start_i + 1;
629
    }
630
    if(status & (MV_ERROR|MV_END)){
631
        mask &= ~(MV_ERROR|MV_END);
632
        s->error_count -= end_i - start_i + 1;
633
    }
634
635
    if(status & (AC_ERROR|DC_ERROR|MV_ERROR)) s->error_count= INT_MAX;
636 46b4feec Michael Niedermayer
637
    if(mask == ~0x7F){
638 7bc9090a Michael Niedermayer
        memset(&s->error_status_table[start_xy], 0, (end_xy - start_xy) * sizeof(uint8_t));
639 46b4feec Michael Niedermayer
    }else{
640
        int i;
641
        for(i=start_xy; i<end_xy; i++){
642 7bc9090a Michael Niedermayer
            s->error_status_table[ i ] &= mask;
643 46b4feec Michael Niedermayer
        }
644
    }
645 7bc9090a Michael Niedermayer
646 115329f1 Diego Biurrun
    if(end_i == s->mb_num)
647 7bc9090a Michael Niedermayer
        s->error_count= INT_MAX;
648
    else{
649 46b4feec Michael Niedermayer
        s->error_status_table[end_xy] &= mask;
650
        s->error_status_table[end_xy] |= status;
651
    }
652 115329f1 Diego Biurrun
653 0aae3f43 Michael Niedermayer
    s->error_status_table[start_xy] |= VP_START;
654 7bc9090a Michael Niedermayer
655 0dfd33c3 Michael Niedermayer
    if(start_xy > 0 && s->avctx->thread_count <= 1 && s->avctx->skip_top*s->mb_width < start_i){
656 7bc9090a Michael Niedermayer
        int prev_status= s->error_status_table[ s->mb_index2xy[start_i - 1] ];
657 115329f1 Diego Biurrun
658 7bc9090a Michael Niedermayer
        prev_status &= ~ VP_START;
659
        if(prev_status != (MV_END|DC_END|AC_END)) s->error_count= INT_MAX;
660
    }
661 46b4feec Michael Niedermayer
}
662
663
void ff_er_frame_end(MpegEncContext *s){
664 4cfbbbde Michael Niedermayer
    int i, mb_x, mb_y, error, error_type, dc_error, mv_error, ac_error;
665 4d2858de Michael Niedermayer
    int distance;
666
    int threshold_part[4]= {100,100,100};
667
    int threshold= 50;
668
    int is_intra_likely;
669 ec892563 Michael Niedermayer
    int size = s->b8_stride * 2 * s->mb_height;
670
    Picture *pic= s->current_picture_ptr;
671 115329f1 Diego Biurrun
672
    if(!s->error_resilience || s->error_count==0 ||
673 0dfd33c3 Michael Niedermayer
       s->error_count==3*s->mb_width*(s->avctx->skip_top + s->avctx->skip_bottom)) return;
674 46b4feec Michael Niedermayer
675 8d7ec294 Wolfgang Hesseler
    if(s->current_picture.motion_val[0] == NULL){
676 9b879566 Michel Bardiaux
        av_log(s->avctx, AV_LOG_ERROR, "Warning MVs not available\n");
677 115329f1 Diego Biurrun
678 967be700 Michael Niedermayer
        for(i=0; i<2; i++){
679 6c08a057 Michael Niedermayer
            pic->ref_index[i]= av_mallocz(size * sizeof(uint8_t));
680 02dc8983 Michael Niedermayer
            pic->motion_val_base[i]= av_mallocz((size+4) * 2 * sizeof(uint16_t));
681
            pic->motion_val[i]= pic->motion_val_base[i]+4;
682 967be700 Michael Niedermayer
        }
683
        pic->motion_subsample_log2= 3;
684
        s->current_picture= *s->current_picture_ptr;
685 46b4feec Michael Niedermayer
    }
686 115329f1 Diego Biurrun
687 ec892563 Michael Niedermayer
    for(i=0; i<2; i++){
688
        if(pic->ref_index[i])
689
            memset(pic->ref_index[i], 0, size * sizeof(uint8_t));
690
    }
691
692 7bc9090a Michael Niedermayer
    if(s->avctx->debug&FF_DEBUG_ER){
693
        for(mb_y=0; mb_y<s->mb_height; mb_y++){
694
            for(mb_x=0; mb_x<s->mb_width; mb_x++){
695
                int status= s->error_status_table[mb_x + mb_y*s->mb_stride];
696 115329f1 Diego Biurrun
697
                av_log(s->avctx, AV_LOG_DEBUG, "%2X ", status);
698 7bc9090a Michael Niedermayer
            }
699 9b879566 Michel Bardiaux
            av_log(s->avctx, AV_LOG_DEBUG, "\n");
700 46b4feec Michael Niedermayer
        }
701
    }
702 115329f1 Diego Biurrun
703 4d2858de Michael Niedermayer
#if 1
704
    /* handle overlapping slices */
705
    for(error_type=1; error_type<=3; error_type++){
706
        int end_ok=0;
707
708
        for(i=s->mb_num-1; i>=0; i--){
709 7bc9090a Michael Niedermayer
            const int mb_xy= s->mb_index2xy[i];
710
            int error= s->error_status_table[mb_xy];
711 115329f1 Diego Biurrun
712 4d2858de Michael Niedermayer
            if(error&(1<<error_type))
713
                end_ok=1;
714
            if(error&(8<<error_type))
715
                end_ok=1;
716
717
            if(!end_ok)
718 7bc9090a Michael Niedermayer
                s->error_status_table[mb_xy]|= 1<<error_type;
719 4d2858de Michael Niedermayer
720
            if(error&VP_START)
721
                end_ok=0;
722
        }
723
    }
724
#endif
725
#if 1
726
    /* handle slices with partitions of different length */
727
    if(s->partitioned_frame){
728
        int end_ok=0;
729
730
        for(i=s->mb_num-1; i>=0; i--){
731 7bc9090a Michael Niedermayer
            const int mb_xy= s->mb_index2xy[i];
732
            int error= s->error_status_table[mb_xy];
733 115329f1 Diego Biurrun
734 4d2858de Michael Niedermayer
            if(error&AC_END)
735
                end_ok=0;
736
            if((error&MV_END) || (error&DC_END) || (error&AC_ERROR))
737
                end_ok=1;
738
739
            if(!end_ok)
740 7bc9090a Michael Niedermayer
                s->error_status_table[mb_xy]|= AC_ERROR;
741 4d2858de Michael Niedermayer
742
            if(error&VP_START)
743
                end_ok=0;
744
        }
745
    }
746
#endif
747
    /* handle missing slices */
748
    if(s->error_resilience>=4){
749
        int end_ok=1;
750 115329f1 Diego Biurrun
751 4d2858de Michael Niedermayer
        for(i=s->mb_num-2; i>=s->mb_width+100; i--){ //FIXME +100 hack
752 7bc9090a Michael Niedermayer
            const int mb_xy= s->mb_index2xy[i];
753
            int error1= s->error_status_table[mb_xy  ];
754 db6e7795 Michael Niedermayer
            int error2= s->error_status_table[s->mb_index2xy[i+1]];
755 115329f1 Diego Biurrun
756 4d2858de Michael Niedermayer
            if(error1&VP_START)
757
                end_ok=1;
758 115329f1 Diego Biurrun
759 4d2858de Michael Niedermayer
            if(   error2==(VP_START|DC_ERROR|AC_ERROR|MV_ERROR|AC_END|DC_END|MV_END)
760 115329f1 Diego Biurrun
               && error1!=(VP_START|DC_ERROR|AC_ERROR|MV_ERROR|AC_END|DC_END|MV_END)
761 4d2858de Michael Niedermayer
               && ((error1&AC_END) || (error1&DC_END) || (error1&MV_END))){ //end & uninited
762
                end_ok=0;
763
            }
764 115329f1 Diego Biurrun
765 4d2858de Michael Niedermayer
            if(!end_ok)
766 7bc9090a Michael Niedermayer
                s->error_status_table[mb_xy]|= DC_ERROR|AC_ERROR|MV_ERROR;
767 4d2858de Michael Niedermayer
        }
768
    }
769 115329f1 Diego Biurrun
770 4d2858de Michael Niedermayer
#if 1
771
    /* backward mark errors */
772
    distance=9999999;
773
    for(error_type=1; error_type<=3; error_type++){
774
        for(i=s->mb_num-1; i>=0; i--){
775 7bc9090a Michael Niedermayer
            const int mb_xy= s->mb_index2xy[i];
776
            int error= s->error_status_table[mb_xy];
777 115329f1 Diego Biurrun
778 7bc9090a Michael Niedermayer
            if(!s->mbskip_table[mb_xy]) //FIXME partition specific
779 115329f1 Diego Biurrun
                distance++;
780 4d2858de Michael Niedermayer
            if(error&(1<<error_type))
781
                distance= 0;
782
783
            if(s->partitioned_frame){
784
                if(distance < threshold_part[error_type-1])
785 7bc9090a Michael Niedermayer
                    s->error_status_table[mb_xy]|= 1<<error_type;
786 4d2858de Michael Niedermayer
            }else{
787
                if(distance < threshold)
788 7bc9090a Michael Niedermayer
                    s->error_status_table[mb_xy]|= 1<<error_type;
789 4d2858de Michael Niedermayer
            }
790
791
            if(error&VP_START)
792
                distance= 9999999;
793
        }
794
    }
795
#endif
796
797
    /* forward mark errors */
798
    error=0;
799
    for(i=0; i<s->mb_num; i++){
800 7bc9090a Michael Niedermayer
        const int mb_xy= s->mb_index2xy[i];
801
        int old_error= s->error_status_table[mb_xy];
802 115329f1 Diego Biurrun
803 4d2858de Michael Niedermayer
        if(old_error&VP_START)
804
            error= old_error& (DC_ERROR|AC_ERROR|MV_ERROR);
805
        else{
806
            error|= old_error& (DC_ERROR|AC_ERROR|MV_ERROR);
807 7bc9090a Michael Niedermayer
            s->error_status_table[mb_xy]|= error;
808 4d2858de Michael Niedermayer
        }
809
    }
810
#if 1
811
    /* handle not partitioned case */
812
    if(!s->partitioned_frame){
813
        for(i=0; i<s->mb_num; i++){
814 7bc9090a Michael Niedermayer
            const int mb_xy= s->mb_index2xy[i];
815
            error= s->error_status_table[mb_xy];
816 4d2858de Michael Niedermayer
            if(error&(AC_ERROR|DC_ERROR|MV_ERROR))
817
                error|= AC_ERROR|DC_ERROR|MV_ERROR;
818 7bc9090a Michael Niedermayer
            s->error_status_table[mb_xy]= error;
819 4d2858de Michael Niedermayer
        }
820
    }
821
#endif
822 4cfbbbde Michael Niedermayer
823
    dc_error= ac_error= mv_error=0;
824
    for(i=0; i<s->mb_num; i++){
825
        const int mb_xy= s->mb_index2xy[i];
826
        error= s->error_status_table[mb_xy];
827
        if(error&DC_ERROR) dc_error ++;
828
        if(error&AC_ERROR) ac_error ++;
829
        if(error&MV_ERROR) mv_error ++;
830
    }
831
    av_log(s->avctx, AV_LOG_INFO, "concealing %d DC, %d AC, %d MV errors\n", dc_error, ac_error, mv_error);
832
833 4d2858de Michael Niedermayer
    is_intra_likely= is_intra_more_likely(s);
834
835
    /* set unknown mb-type to most likely */
836
    for(i=0; i<s->mb_num; i++){
837 7bc9090a Michael Niedermayer
        const int mb_xy= s->mb_index2xy[i];
838
        error= s->error_status_table[mb_xy];
839
        if(!((error&DC_ERROR) && (error&MV_ERROR)))
840
            continue;
841 4d2858de Michael Niedermayer
842 7bc9090a Michael Niedermayer
        if(is_intra_likely)
843
            s->current_picture.mb_type[mb_xy]= MB_TYPE_INTRA4x4;
844 4d2858de Michael Niedermayer
        else
845 7bc9090a Michael Niedermayer
            s->current_picture.mb_type[mb_xy]= MB_TYPE_16x16 | MB_TYPE_L0;
846 4d2858de Michael Niedermayer
    }
847 115329f1 Diego Biurrun
848 4d2858de Michael Niedermayer
    /* handle inter blocks with damaged AC */
849
    for(mb_y=0; mb_y<s->mb_height; mb_y++){
850
        for(mb_x=0; mb_x<s->mb_width; mb_x++){
851 7bc9090a Michael Niedermayer
            const int mb_xy= mb_x + mb_y * s->mb_stride;
852
            const int mb_type= s->current_picture.mb_type[mb_xy];
853
            error= s->error_status_table[mb_xy];
854 4d2858de Michael Niedermayer
855 7bc9090a Michael Niedermayer
            if(IS_INTRA(mb_type)) continue; //intra
856 4d2858de Michael Niedermayer
            if(error&MV_ERROR) continue;              //inter with damaged MV
857
            if(!(error&AC_ERROR)) continue;           //undamaged inter
858 115329f1 Diego Biurrun
859 4d2858de Michael Niedermayer
            s->mv_dir = MV_DIR_FORWARD;
860
            s->mb_intra=0;
861 160d679c Mike Melanson
            s->mb_skipped=0;
862 7bc9090a Michael Niedermayer
            if(IS_8X8(mb_type)){
863 137c8468 Michael Niedermayer
                int mb_index= mb_x*2 + mb_y*2*s->b8_stride;
864 4d2858de Michael Niedermayer
                int j;
865
                s->mv_type = MV_TYPE_8X8;
866
                for(j=0; j<4; j++){
867 137c8468 Michael Niedermayer
                    s->mv[0][j][0] = s->current_picture.motion_val[0][ mb_index + (j&1) + (j>>1)*s->b8_stride ][0];
868
                    s->mv[0][j][1] = s->current_picture.motion_val[0][ mb_index + (j&1) + (j>>1)*s->b8_stride ][1];
869 4d2858de Michael Niedermayer
                }
870
            }else{
871
                s->mv_type = MV_TYPE_16X16;
872 137c8468 Michael Niedermayer
                s->mv[0][0][0] = s->current_picture.motion_val[0][ mb_x*2 + mb_y*2*s->b8_stride ][0];
873
                s->mv[0][0][1] = s->current_picture.motion_val[0][ mb_x*2 + mb_y*2*s->b8_stride ][1];
874 4d2858de Michael Niedermayer
            }
875 115329f1 Diego Biurrun
876 bb270c08 Diego Biurrun
            s->dsp.clear_blocks(s->block[0]);
877 4d2858de Michael Niedermayer
878
            s->mb_x= mb_x;
879
            s->mb_y= mb_y;
880 7d1c3fc1 Michael Niedermayer
            decode_mb(s);
881 4d2858de Michael Niedermayer
        }
882
    }
883
884
    /* guess MVs */
885
    if(s->pict_type==B_TYPE){
886
        for(mb_y=0; mb_y<s->mb_height; mb_y++){
887
            for(mb_x=0; mb_x<s->mb_width; mb_x++){
888 137c8468 Michael Niedermayer
                int xy= mb_x*2 + mb_y*2*s->b8_stride;
889 7bc9090a Michael Niedermayer
                const int mb_xy= mb_x + mb_y * s->mb_stride;
890
                const int mb_type= s->current_picture.mb_type[mb_xy];
891
                error= s->error_status_table[mb_xy];
892 4d2858de Michael Niedermayer
893 7bc9090a Michael Niedermayer
                if(IS_INTRA(mb_type)) continue;
894 4d2858de Michael Niedermayer
                if(!(error&MV_ERROR)) continue;           //inter with undamaged MV
895
                if(!(error&AC_ERROR)) continue;           //undamaged inter
896 115329f1 Diego Biurrun
897 4d2858de Michael Niedermayer
                s->mv_dir = MV_DIR_FORWARD|MV_DIR_BACKWARD;
898
                s->mb_intra=0;
899
                s->mv_type = MV_TYPE_16X16;
900 160d679c Mike Melanson
                s->mb_skipped=0;
901 115329f1 Diego Biurrun
902 4d2858de Michael Niedermayer
                if(s->pp_time){
903
                    int time_pp= s->pp_time;
904
                    int time_pb= s->pb_time;
905 115329f1 Diego Biurrun
906 8d7ec294 Wolfgang Hesseler
                    s->mv[0][0][0] = s->next_picture.motion_val[0][xy][0]*time_pb/time_pp;
907
                    s->mv[0][0][1] = s->next_picture.motion_val[0][xy][1]*time_pb/time_pp;
908
                    s->mv[1][0][0] = s->next_picture.motion_val[0][xy][0]*(time_pb - time_pp)/time_pp;
909
                    s->mv[1][0][1] = s->next_picture.motion_val[0][xy][1]*(time_pb - time_pp)/time_pp;
910 4d2858de Michael Niedermayer
                }else{
911
                    s->mv[0][0][0]= 0;
912
                    s->mv[0][0][1]= 0;
913
                    s->mv[1][0][0]= 0;
914
                    s->mv[1][0][1]= 0;
915
                }
916 eb4b3dd3 Zdenek Kabelac
917
                s->dsp.clear_blocks(s->block[0]);
918 4d2858de Michael Niedermayer
                s->mb_x= mb_x;
919
                s->mb_y= mb_y;
920 7d1c3fc1 Michael Niedermayer
                decode_mb(s);
921 4d2858de Michael Niedermayer
            }
922
        }
923
    }else
924
        guess_mv(s);
925
926 2e7b4c84 Ivan Kalvachev
#ifdef HAVE_XVMC
927
    /* the filters below are not XvMC compatible, skip them */
928
    if(s->avctx->xvmc_acceleration) goto ec_clean;
929
#endif
930 4d2858de Michael Niedermayer
    /* fill DC for inter blocks */
931
    for(mb_y=0; mb_y<s->mb_height; mb_y++){
932
        for(mb_x=0; mb_x<s->mb_width; mb_x++){
933
            int dc, dcu, dcv, y, n;
934 0c1a9eda Zdenek Kabelac
            int16_t *dc_ptr;
935
            uint8_t *dest_y, *dest_cb, *dest_cr;
936 7bc9090a Michael Niedermayer
            const int mb_xy= mb_x + mb_y * s->mb_stride;
937
            const int mb_type= s->current_picture.mb_type[mb_xy];
938 115329f1 Diego Biurrun
939 7bc9090a Michael Niedermayer
            error= s->error_status_table[mb_xy];
940 4d2858de Michael Niedermayer
941 7bc9090a Michael Niedermayer
            if(IS_INTRA(mb_type) && s->partitioned_frame) continue;
942 4d2858de Michael Niedermayer
//            if(error&MV_ERROR) continue; //inter data damaged FIXME is this good?
943 115329f1 Diego Biurrun
944 1e491e29 Michael Niedermayer
            dest_y = s->current_picture.data[0] + mb_x*16 + mb_y*16*s->linesize;
945
            dest_cb= s->current_picture.data[1] + mb_x*8  + mb_y*8 *s->uvlinesize;
946
            dest_cr= s->current_picture.data[2] + mb_x*8  + mb_y*8 *s->uvlinesize;
947 115329f1 Diego Biurrun
948 137c8468 Michael Niedermayer
            dc_ptr= &s->dc_val[0][mb_x*2 + mb_y*2*s->b8_stride];
949 4d2858de Michael Niedermayer
            for(n=0; n<4; n++){
950
                dc=0;
951
                for(y=0; y<8; y++){
952
                    int x;
953
                    for(x=0; x<8; x++){
954
                       dc+= dest_y[x + (n&1)*8 + (y + (n>>1)*8)*s->linesize];
955
                    }
956
                }
957 137c8468 Michael Niedermayer
                dc_ptr[(n&1) + (n>>1)*s->b8_stride]= (dc+4)>>3;
958 4d2858de Michael Niedermayer
            }
959
960
            dcu=dcv=0;
961
            for(y=0; y<8; y++){
962
                int x;
963
                for(x=0; x<8; x++){
964
                    dcu+=dest_cb[x + y*(s->uvlinesize)];
965
                    dcv+=dest_cr[x + y*(s->uvlinesize)];
966
                }
967
            }
968 137c8468 Michael Niedermayer
            s->dc_val[1][mb_x + mb_y*s->mb_stride]= (dcu+4)>>3;
969 115329f1 Diego Biurrun
            s->dc_val[2][mb_x + mb_y*s->mb_stride]= (dcv+4)>>3;
970 4d2858de Michael Niedermayer
        }
971
    }
972
#if 1
973
    /* guess DC for damaged blocks */
974 137c8468 Michael Niedermayer
    guess_dc(s, s->dc_val[0], s->mb_width*2, s->mb_height*2, s->b8_stride, 1);
975
    guess_dc(s, s->dc_val[1], s->mb_width  , s->mb_height  , s->mb_stride, 0);
976
    guess_dc(s, s->dc_val[2], s->mb_width  , s->mb_height  , s->mb_stride, 0);
977 115329f1 Diego Biurrun
#endif
978 4d2858de Michael Niedermayer
    /* filter luma DC */
979 137c8468 Michael Niedermayer
    filter181(s->dc_val[0], s->mb_width*2, s->mb_height*2, s->b8_stride);
980 115329f1 Diego Biurrun
981 4d2858de Michael Niedermayer
#if 1
982
    /* render DC only intra */
983
    for(mb_y=0; mb_y<s->mb_height; mb_y++){
984
        for(mb_x=0; mb_x<s->mb_width; mb_x++){
985 0c1a9eda Zdenek Kabelac
            uint8_t *dest_y, *dest_cb, *dest_cr;
986 7bc9090a Michael Niedermayer
            const int mb_xy= mb_x + mb_y * s->mb_stride;
987
            const int mb_type= s->current_picture.mb_type[mb_xy];
988
989
            error= s->error_status_table[mb_xy];
990 4d2858de Michael Niedermayer
991 7bc9090a Michael Niedermayer
            if(IS_INTER(mb_type)) continue;
992 4d2858de Michael Niedermayer
            if(!(error&AC_ERROR)) continue;              //undamaged
993 115329f1 Diego Biurrun
994 1e491e29 Michael Niedermayer
            dest_y = s->current_picture.data[0] + mb_x*16 + mb_y*16*s->linesize;
995
            dest_cb= s->current_picture.data[1] + mb_x*8  + mb_y*8 *s->uvlinesize;
996
            dest_cr= s->current_picture.data[2] + mb_x*8  + mb_y*8 *s->uvlinesize;
997 115329f1 Diego Biurrun
998 4d2858de Michael Niedermayer
            put_dc(s, dest_y, dest_cb, dest_cr, mb_x, mb_y);
999
        }
1000
    }
1001
#endif
1002 115329f1 Diego Biurrun
1003 4d2858de Michael Niedermayer
    if(s->avctx->error_concealment&FF_EC_DEBLOCK){
1004
        /* filter horizontal block boundaries */
1005 1e491e29 Michael Niedermayer
        h_block_filter(s, s->current_picture.data[0], s->mb_width*2, s->mb_height*2, s->linesize  , 1);
1006
        h_block_filter(s, s->current_picture.data[1], s->mb_width  , s->mb_height  , s->uvlinesize, 0);
1007
        h_block_filter(s, s->current_picture.data[2], s->mb_width  , s->mb_height  , s->uvlinesize, 0);
1008 4d2858de Michael Niedermayer
1009
        /* filter vertical block boundaries */
1010 1e491e29 Michael Niedermayer
        v_block_filter(s, s->current_picture.data[0], s->mb_width*2, s->mb_height*2, s->linesize  , 1);
1011
        v_block_filter(s, s->current_picture.data[1], s->mb_width  , s->mb_height  , s->uvlinesize, 0);
1012
        v_block_filter(s, s->current_picture.data[2], s->mb_width  , s->mb_height  , s->uvlinesize, 0);
1013 4d2858de Michael Niedermayer
    }
1014
1015 02c28fe6 Fabrice Bellard
#ifdef HAVE_XVMC
1016 2e7b4c84 Ivan Kalvachev
ec_clean:
1017 02c28fe6 Fabrice Bellard
#endif
1018 4d2858de Michael Niedermayer
    /* clean a few tables */
1019
    for(i=0; i<s->mb_num; i++){
1020 7bc9090a Michael Niedermayer
        const int mb_xy= s->mb_index2xy[i];
1021
        int error= s->error_status_table[mb_xy];
1022 115329f1 Diego Biurrun
1023 4d2858de Michael Niedermayer
        if(s->pict_type!=B_TYPE && (error&(DC_ERROR|MV_ERROR|AC_ERROR))){
1024 7bc9090a Michael Niedermayer
            s->mbskip_table[mb_xy]=0;
1025 4d2858de Michael Niedermayer
        }
1026 7bc9090a Michael Niedermayer
        s->mbintra_table[mb_xy]=1;
1027 115329f1 Diego Biurrun
    }
1028 4d2858de Michael Niedermayer
}