motion_est_template.c

Trolltech公司发布的图形界面操作系统。可在qt-embedded-2.3.10平台上编译为嵌入式图形界面操作系统。

                    const int b2= nx*nx*(br + bl - 2*b) + 4*nx*(br-bl) + 32*b;
                    int score= ny*ny*(b2 + t2 - 2*c2) + 4*ny*(b2 - t2) + 32*c2;
                    int i;
                    
                    if((nx&3)==0 && (ny&3)==0) continue;
                    
                    score += 1024*(mv_penalty[4*mx + nx - pred_x] + mv_penalty[4*my + ny - pred_y])*penalty_factor;
                    
//                    if(nx&1) score-=1024*s->me.penalty_factor;
//                    if(ny&1) score-=1024*s->me.penalty_factor;
                    
                    for(i=0; i<8; i++){
                        if(score < best[i]){
                            memmove(&best[i+1], &best[i], sizeof(int)*(7-i));
                            memmove(&best_pos[i+1][0], &best_pos[i][0], sizeof(int)*2*(7-i));
                            best[i]= score;
                            best_pos[i][0]= nx + 4*mx;
                            best_pos[i][1]= ny + 4*my;
                            break;
                        }
                    }
                }
            }
        }else{
            int tl;
            const int cx = 4*(r - l);
            const int cx2= r + l - 2*c; 
            const int cy = 4*(b - t);
            const int cy2= b + t - 2*c;
            int cxy;
              
            if(map[(index-(1<<ME_MAP_SHIFT)-1)&(ME_MAP_SIZE-1)] == (my<<ME_MAP_MV_BITS) + mx + map_generation && 0){ //FIXME
                tl= score_map[(index-(1<<ME_MAP_SHIFT)-1)&(ME_MAP_SIZE-1)];
            }else{
                CMP(tl, mx-1, my-1, size); //FIXME wrong if chroma me is different
            }
            
            cxy= 2*tl + (cx + cy)/4 - (cx2 + cy2) - 2*c; 
           
            assert(16*cx2 + 4*cx + 32*c == 32*r);
            assert(16*cx2 - 4*cx + 32*c == 32*l);
            assert(16*cy2 + 4*cy + 32*c == 32*b);
            assert(16*cy2 - 4*cy + 32*c == 32*t);
            assert(16*cxy + 16*cy2 + 16*cx2 - 4*cy - 4*cx + 32*c == 32*tl);
            
            for(ny= -3; ny <= 3; ny++){
                for(nx= -3; nx <= 3; nx++){
                    int score= ny*nx*cxy + nx*nx*cx2 + ny*ny*cy2 + nx*cx + ny*cy + 32*c; //FIXME factor
                    int i;
                    
                    if((nx&3)==0 && (ny&3)==0) continue;
                
                    score += 32*(mv_penalty[4*mx + nx - pred_x] + mv_penalty[4*my + ny - pred_y])*penalty_factor;
//                    if(nx&1) score-=32*s->me.penalty_factor;
  //                  if(ny&1) score-=32*s->me.penalty_factor;
                    
                    for(i=0; i<8; i++){
                        if(score < best[i]){
                            memmove(&best[i+1], &best[i], sizeof(int)*(7-i));
                            memmove(&best_pos[i+1][0], &best_pos[i][0], sizeof(int)*2*(7-i));
                            best[i]= score;
                            best_pos[i][0]= nx + 4*mx;
                            best_pos[i][1]= ny + 4*my;
                            break;
                        }
                    }
                }
            }            
        }
        for(i=0; i<subpel_quality; i++){
            nx= best_pos[i][0];
            ny= best_pos[i][1];
            CHECK_QUARTER_MV(nx&3, ny&3, nx>>2, ny>>2)
        }

#if 0
            const int tl= score_map[(index-(1<<ME_MAP_SHIFT)-1)&(ME_MAP_SIZE-1)];
            const int bl= score_map[(index+(1<<ME_MAP_SHIFT)-1)&(ME_MAP_SIZE-1)];
            const int tr= score_map[(index-(1<<ME_MAP_SHIFT)+1)&(ME_MAP_SIZE-1)];
            const int br= score_map[(index+(1<<ME_MAP_SHIFT)+1)&(ME_MAP_SIZE-1)];
//            if(l < r && l < t && l < b && l < tl && l < bl && l < tr && l < br && bl < tl){
            if(tl<br){

//            nx= FFMAX(4*mx - bx, bx - 4*mx);
//            ny= FFMAX(4*my - by, by - 4*my);
            
            static int stats[7][7], count;
            count++;
            stats[4*mx - bx + 3][4*my - by + 3]++;
            if(256*256*256*64 % count ==0){
                for(i=0; i<49; i++){
                    if((i%7)==0) printf("\n");
                    printf("%6d ", stats[0][i]);
                }
                printf("\n");
            }
            }
#endif
#else

        CHECK_QUARTER_MV(2, 2, mx-1, my-1)
        CHECK_QUARTER_MV(0, 2, mx  , my-1)        
        CHECK_QUARTER_MV(2, 2, mx  , my-1)
        CHECK_QUARTER_MV(2, 0, mx  , my  )
        CHECK_QUARTER_MV(2, 2, mx  , my  )
        CHECK_QUARTER_MV(0, 2, mx  , my  )
        CHECK_QUARTER_MV(2, 2, mx-1, my  )
        CHECK_QUARTER_MV(2, 0, mx-1, my  )
        
        nx= bx;
        ny= by;
        
        for(i=0; i<8; i++){
            int ox[8]= {0, 1, 1, 1, 0,-1,-1,-1};
            int oy[8]= {1, 1, 0,-1,-1,-1, 0, 1};
            CHECK_QUARTER_MV((nx + ox[i])&3, (ny + oy[i])&3, (nx + ox[i])>>2, (ny + oy[i])>>2)
        }
#endif
#if 0
        //outer ring
        CHECK_QUARTER_MV(1, 3, mx-1, my-1)
        CHECK_QUARTER_MV(1, 2, mx-1, my-1)
        CHECK_QUARTER_MV(1, 1, mx-1, my-1)
        CHECK_QUARTER_MV(2, 1, mx-1, my-1)
        CHECK_QUARTER_MV(3, 1, mx-1, my-1)
        CHECK_QUARTER_MV(0, 1, mx  , my-1)
        CHECK_QUARTER_MV(1, 1, mx  , my-1)
        CHECK_QUARTER_MV(2, 1, mx  , my-1)
        CHECK_QUARTER_MV(3, 1, mx  , my-1)
        CHECK_QUARTER_MV(3, 2, mx  , my-1)
        CHECK_QUARTER_MV(3, 3, mx  , my-1)
        CHECK_QUARTER_MV(3, 0, mx  , my  )
        CHECK_QUARTER_MV(3, 1, mx  , my  )
        CHECK_QUARTER_MV(3, 2, mx  , my  )
        CHECK_QUARTER_MV(3, 3, mx  , my  )
        CHECK_QUARTER_MV(2, 3, mx  , my  )
        CHECK_QUARTER_MV(1, 3, mx  , my  )
        CHECK_QUARTER_MV(0, 3, mx  , my  )
        CHECK_QUARTER_MV(3, 3, mx-1, my  )
        CHECK_QUARTER_MV(2, 3, mx-1, my  )
        CHECK_QUARTER_MV(1, 3, mx-1, my  )
        CHECK_QUARTER_MV(1, 2, mx-1, my  )
        CHECK_QUARTER_MV(1, 1, mx-1, my  )
        CHECK_QUARTER_MV(1, 0, mx-1, my  )
#endif
        assert(bx >= xmin*4 && bx <= xmax*4 && by >= ymin*4 && by <= ymax*4);

        *mx_ptr = bx;
        *my_ptr = by;
    }else{
        *mx_ptr =4*mx;
        *my_ptr =4*my;
    }

    return dmin;
}

static int RENAME(qpel_get_mb_score)(MpegEncContext * s, int mx, int my, int pred_x, int pred_y, Picture *ref_picture, 
                                  uint8_t * const mv_penalty)
{
    const int size= 0;
    const int xx = 16 * s->mb_x;
    const int yy = 16 * s->mb_y;
    const int penalty_factor= s->me.mb_penalty_factor;
    const int xmin= -256*256, ymin= -256*256, xmax= 256*256, ymax= 256*256; //assume that the caller checked these
    const __attribute__((unused)) int unu2= xmin + xmax +ymin + ymax; //no unused warning shit
    me_cmp_func cmp_sub, chroma_cmp_sub;
    int d;

    LOAD_COMMON(xx, yy);
    
 //FIXME factorize

    cmp_sub= s->dsp.mb_cmp[size];
    chroma_cmp_sub= s->dsp.mb_cmp[size+1];
    
    assert(!s->me.skip);
    assert(s->avctx->me_sub_cmp != s->avctx->mb_cmp);

    CMP_QPEL(d, mx&3, my&3, mx>>2, my>>2, size);
    //FIXME check cbp before adding penalty for (0,0) vector
    if(mx || my || size>0)
        d += (mv_penalty[mx - pred_x] + mv_penalty[my - pred_y])*penalty_factor;
        
    return d;
}


#endif /* CMP_QPEL */

#define CHECK_MV(x,y)\
{\
    const int key= ((y)<<ME_MAP_MV_BITS) + (x) + map_generation;\
    const int index= (((y)<<ME_MAP_SHIFT) + (x))&(ME_MAP_SIZE-1);\
/*printf("check_mv %d %d\n", x, y);*/\
    if(map[index]!=key){\
        CMP(d, x, y, size);\
        map[index]= key;\
        score_map[index]= d;\
        d += (mv_penalty[((x)<<shift)-pred_x] + mv_penalty[((y)<<shift)-pred_y])*penalty_factor;\
/*printf("score:%d\n", d);*/\
        COPY3_IF_LT(dmin, d, best[0], x, best[1], y)\
    }\
}

#define CHECK_CLIPED_MV(ax,ay)\
{\
    const int x= FFMAX(xmin, FFMIN(ax, xmax));\
    const int y= FFMAX(ymin, FFMIN(ay, ymax));\
    CHECK_MV(x, y)\
}

#define CHECK_MV_DIR(x,y,new_dir)\
{\
    const int key= ((y)<<ME_MAP_MV_BITS) + (x) + map_generation;\
    const int index= (((y)<<ME_MAP_SHIFT) + (x))&(ME_MAP_SIZE-1);\
/*printf("check_mv_dir %d %d %d\n", x, y, new_dir);*/\
    if(map[index]!=key){\
        CMP(d, x, y, size);\
        map[index]= key;\
        score_map[index]= d;\
        d += (mv_penalty[((x)<<shift)-pred_x] + mv_penalty[((y)<<shift)-pred_y])*penalty_factor;\
/*printf("score:%d\n", d);*/\
        if(d<dmin){\
            best[0]=x;\
            best[1]=y;\
            dmin=d;\
            next_dir= new_dir;\
        }\
    }\
}

#define check(x,y,S,v)\
if( (x)<(xmin<<(S)) ) printf("%d %d %d %d %d xmin" #v, xmin, (x), (y), s->mb_x, s->mb_y);\
if( (x)>(xmax<<(S)) ) printf("%d %d %d %d %d xmax" #v, xmax, (x), (y), s->mb_x, s->mb_y);\
if( (y)<(ymin<<(S)) ) printf("%d %d %d %d %d ymin" #v, ymin, (x), (y), s->mb_x, s->mb_y);\
if( (y)>(ymax<<(S)) ) printf("%d %d %d %d %d ymax" #v, ymax, (x), (y), s->mb_x, s->mb_y);\


static inline int RENAME(small_diamond_search)(MpegEncContext * s, int *best, int dmin,
                                       Picture *ref_picture,
                                       int const pred_x, int const pred_y, int const penalty_factor,
                                       int const xmin, int const ymin, int const xmax, int const ymax, int const shift,
                                       uint32_t *map, int map_generation, int size, uint8_t * const mv_penalty
                                       )
{
    me_cmp_func cmp, chroma_cmp;
    int next_dir=-1;
    LOAD_COMMON(s->mb_x*16, s->mb_y*16);
    
    cmp= s->dsp.me_cmp[size];
    chroma_cmp= s->dsp.me_cmp[size+1];

    { /* ensure that the best point is in the MAP as h/qpel refinement needs it */
        const int key= (best[1]<<ME_MAP_MV_BITS) + best[0] + map_generation;
        const int index= ((best[1]<<ME_MAP_SHIFT) + best[0])&(ME_MAP_SIZE-1);
        if(map[index]!=key){ //this will be executed only very rarey
            CMP(score_map[index], best[0], best[1], size);
            map[index]= key;
        }
    }

    for(;;){
        int d;
        const int dir= next_dir;
        const int x= best[0];
        const int y= best[1];
        next_dir=-1;

//printf("%d", dir);
        if(dir!=2 && x>xmin) CHECK_MV_DIR(x-1, y  , 0)
        if(dir!=3 && y>ymin) CHECK_MV_DIR(x  , y-1, 1)
        if(dir!=0 && x<xmax) CHECK_MV_DIR(x+1, y  , 2)
        if(dir!=1 && y<ymax) CHECK_MV_DIR(x  , y+1, 3)

        if(next_dir==-1){
            return dmin;
        }
    }
}

static inline int RENAME(funny_diamond_search)(MpegEncContext * s, int *best, int dmin,
                                       Picture *ref_picture,
                                       int const pred_x, int const pred_y, int const penalty_factor,
                                       int const xmin, int const ymin, int const xmax, int const ymax, int const shift,
                                       uint32_t *map, int map_generation, int size, uint8_t * const mv_penalty
                                       )
{
    me_cmp_func cmp, chroma_cmp;
    int dia_size;
    LOAD_COMMON(s->mb_x*16, s->mb_y*16);
    
    cmp= s->dsp.me_cmp[size];
    chroma_cmp= s->dsp.me_cmp[size+1];

    for(dia_size=1; dia_size<=4; dia_size++){
        int dir;
        const int x= best[0];
        const int y= best[1];
        
        if(dia_size&(dia_size-1)) continue;

        if(   x + dia_size > xmax
           || x - dia_size < xmin
           || y + dia_size > ymax
           || y - dia_size < ymin)
           continue;
        
        for(dir= 0; dir<dia_size; dir+=2){
            int d;

            CHECK_MV(x + dir           , y + dia_size - dir);
            CHECK_MV(x + dia_size - dir, y - dir           );
            CHECK_MV(x - dir           , y - dia_size + dir);
            CHECK_MV(x - dia_size + dir, y + dir           );
        }

        if(x!=best[0] || y!=best[1])
            dia_size=0;
#if 0
{
int dx, dy, i;
static int stats[8*8];
dx= ABS(x-best[0]);
dy= ABS(y-best[1]);
if(dy>dx){
    dx^=dy; dy^=dx; dx^=dy;
}
stats[dy*8 + dx] ++;
if(256*256*256*64 % (stats[0]+1)==0){
    for(i=0; i<64; i++){
        if((i&7)==0) printf("\n");
        printf("%8d ", stats[i]);
    }
    printf("\n");
}
}
#endif
    }
    return dmin;    
}

#define SAB_CHECK_MV(ax,ay)\
{\
    const int key= ((ay)<<ME_MAP_MV_BITS) + (ax) + map_generation;\
    const int index= (((ay)<<ME_MAP_SHIFT) + (ax))&(ME_MAP_SIZE-1);\
/*printf("sab check %d %d\n", ax, ay);*/\
    if(map[index]!=key){\
        CMP(d, ax, ay, size);\
        map[index]= key;\
        score_map[index]= d;\
        d += (mv_penalty[((ax)<<shift)-pred_x] + mv_penalty[((ay)<<shift)-pred_y])*penalty_factor;\
/*printf("score: %d\n", d);*/\
        if(d < minima[minima_count-1].height){\
            int j=0;\
            \
            while(d >= minima[j].height) j++;\
\
            memmove(&minima [j+1], &minima [j], (minima_count - j - 1)*sizeof(Minima));\