predict.c

在dsp上实现h.264编解码

    src[0*i_stride+1] =
    src[1*i_stride+0] = ( t1 + 2*t2+ t3 + 2 ) >> 2;

    src[0*i_stride+2] =
    src[1*i_stride+1] =
    src[2*i_stride+0] = ( t2 + 2*t3+ t4 + 2 ) >> 2;

    src[0*i_stride+3] =
    src[1*i_stride+2] =
    src[2*i_stride+1] =
    src[3*i_stride+0] = ( t3 + 2*t4+ t5 + 2 ) >> 2;

    src[1*i_stride+3] =
    src[2*i_stride+2] =
    src[3*i_stride+1] = ( t4 + 2*t5+ t6 + 2 ) >> 2;

    src[2*i_stride+3] =
    src[3*i_stride+2] = ( t5 + 2*t6+ t7 + 2 ) >> 2;

    src[3*i_stride+3] = ( t6 + 3 * t7 + 2 ) >> 2;
}
static void predict_4x4_ddr( uint8_t *src, int i_stride )
{
    const int lt = src[-1-i_stride];
    PREDICT_4x4_LOAD_LEFT
    PREDICT_4x4_LOAD_TOP

    src[0*i_stride+0] =
    src[1*i_stride+1] =
    src[2*i_stride+2] =
    src[3*i_stride+3] = ( t0 + 2*lt +l0 + 2 ) >> 2;

    src[0*i_stride+1] =
    src[1*i_stride+2] =
    src[2*i_stride+3] = ( lt + 2 * t0 + t1 + 2 ) >> 2;

    src[0*i_stride+2] =
    src[1*i_stride+3] = ( t0 + 2 * t1 + t2 + 2 ) >> 2;

    src[0*i_stride+3] = ( t1 + 2 * t2 + t3 + 2 ) >> 2;

    src[1*i_stride+0] =
    src[2*i_stride+1] =
    src[3*i_stride+2] = ( lt + 2 * l0 + l1 + 2 ) >> 2;

    src[2*i_stride+0] =
    src[3*i_stride+1] = ( l0 + 2 * l1 + l2 + 2 ) >> 2;

    src[3*i_stride+0] = ( l1 + 2 * l2 + l3 + 2 ) >> 2;
}

static void predict_4x4_vr( uint8_t *src, int i_stride )
{
    const int lt = src[-1-i_stride];
    PREDICT_4x4_LOAD_LEFT
    PREDICT_4x4_LOAD_TOP
    /* produce warning as l3 is unused */

    src[0*i_stride+0]=
    src[2*i_stride+1]= ( lt + t0 + 1 ) >> 1;

    src[0*i_stride+1]=
    src[2*i_stride+2]= ( t0 + t1 + 1 ) >> 1;

    src[0*i_stride+2]=
    src[2*i_stride+3]= ( t1 + t2 + 1 ) >> 1;

    src[0*i_stride+3]= ( t2 + t3 + 1 ) >> 1;

    src[1*i_stride+0]=
    src[3*i_stride+1]= ( l0 + 2 * lt + t0 + 2 ) >> 2;

    src[1*i_stride+1]=
    src[3*i_stride+2]= ( lt + 2 * t0 + t1 + 2 ) >> 2;

    src[1*i_stride+2]=
    src[3*i_stride+3]= ( t0 + 2 * t1 + t2 + 2) >> 2;

    src[1*i_stride+3]= ( t1 + 2 * t2 + t3 + 2 ) >> 2;
    src[2*i_stride+0]= ( lt + 2 * l0 + l1 + 2 ) >> 2;
    src[3*i_stride+0]= ( l0 + 2 * l1 + l2 + 2 ) >> 2;
}

static void predict_4x4_hd( uint8_t *src, int i_stride )
{
    const int lt= src[-1-1*i_stride];
    PREDICT_4x4_LOAD_LEFT
    PREDICT_4x4_LOAD_TOP
    /* produce warning as t3 is unused */

    src[0*i_stride+0]=
    src[1*i_stride+2]= ( lt + l0 + 1 ) >> 1;
    src[0*i_stride+1]=
    src[1*i_stride+3]= ( l0 + 2 * lt + t0 + 2 ) >> 2;
    src[0*i_stride+2]= ( lt + 2 * t0 + t1 + 2 ) >> 2;
    src[0*i_stride+3]= ( t0 + 2 * t1 + t2 + 2 ) >> 2;
    src[1*i_stride+0]=
    src[2*i_stride+2]= ( l0 + l1 + 1 ) >> 1;
    src[1*i_stride+1]=
    src[2*i_stride+3]= ( lt + 2 * l0 + l1 + 2 ) >> 2;
    src[2*i_stride+0]=
    src[3*i_stride+2]= ( l1 + l2+ 1 ) >> 1;
    src[2*i_stride+1]=
    src[3*i_stride+3]= ( l0 + 2 * l1 + l2 + 2 ) >> 2;
    src[3*i_stride+0]= ( l2 + l3 + 1 ) >> 1;
    src[3*i_stride+1]= ( l1 + 2 * l2 + l3 + 2 ) >> 2;
}

static void predict_4x4_vl( uint8_t *src, int i_stride )
{
    PREDICT_4x4_LOAD_TOP
    PREDICT_4x4_LOAD_TOP_RIGHT
    /* produce warning as t7 is unused */

    src[0*i_stride+0]= ( t0 + t1 + 1 ) >> 1;
    src[0*i_stride+1]=
    src[2*i_stride+0]= ( t1 + t2 + 1 ) >> 1;
    src[0*i_stride+2]=
    src[2*i_stride+1]= ( t2 + t3 + 1 ) >> 1;
    src[0*i_stride+3]=
    src[2*i_stride+2]= ( t3 + t4+ 1 ) >> 1;
    src[2*i_stride+3]= ( t4 + t5+ 1 ) >> 1;
    src[1*i_stride+0]= ( t0 + 2 * t1 + t2 + 2 ) >> 2;
    src[1*i_stride+1]=
    src[3*i_stride+0]= ( t1 + 2 * t2 + t3 + 2 ) >> 2;
    src[1*i_stride+2]=
    src[3*i_stride+1]= ( t2 + 2 * t3 + t4 + 2 ) >> 2;
    src[1*i_stride+3]=
    src[3*i_stride+2]= ( t3 + 2 * t4 + t5 + 2 ) >> 2;
    src[3*i_stride+3]= ( t4 + 2 * t5 + t6 + 2 ) >> 2;
}

static void predict_4x4_hu( uint8_t *src, int i_stride )
{
    PREDICT_4x4_LOAD_LEFT

    src[0*i_stride+0]= ( l0 + l1 + 1 ) >> 1;
    src[0*i_stride+1]= ( l0 + 2 * l1 + l2 + 2 ) >> 2;

    src[0*i_stride+2]=
    src[1*i_stride+0]= ( l1 + l2 + 1 ) >> 1;

    src[0*i_stride+3]=
    src[1*i_stride+1]= ( l1 + 2*l2 + l3 + 2 ) >> 2;

    src[1*i_stride+2]=
    src[2*i_stride+0]= ( l2 + l3 + 1 ) >> 1;

    src[1*i_stride+3]=
    src[2*i_stride+1]= ( l2 + 2 * l3 + l3 + 2 ) >> 2;

    src[2*i_stride+3]=
    src[3*i_stride+1]=
    src[3*i_stride+0]=
    src[2*i_stride+2]=
    src[3*i_stride+2]=
    src[3*i_stride+3]= l3;
}

/****************************************************************************
 * 8x8 prediction for intra luma block
 ****************************************************************************/

#define SRC(x,y) src[(x)+(y)*i_stride]
#define PL(y) \
    const int l##y = (SRC(-1,y-1) + 2*SRC(-1,y) + SRC(-1,y+1) + 2) >> 2;
#define PREDICT_8x8_LOAD_LEFT \
    const int l0 = ((i_neighbor&MB_TOPLEFT ? SRC(-1,-1) : SRC(-1,0)) \
                     + 2*SRC(-1,0) + SRC(-1,1) + 2) >> 2; \
    PL(1) PL(2) PL(3) PL(4) PL(5) PL(6) \
    const int l7 = (SRC(-1,6) + 3*SRC(-1,7) + 2) >> 2;

#define PT(x) \
    const int t##x = (SRC(x-1,-1) + 2*SRC(x,-1) + SRC(x+1,-1) + 2) >> 2;
#define PREDICT_8x8_LOAD_TOP \
    const int t0 = ((i_neighbor&MB_TOPLEFT ? SRC(-1,-1) : SRC(0,-1)) \
                     + 2*SRC(0,-1) + SRC(1,-1) + 2) >> 2; \
    PT(1) PT(2) PT(3) PT(4) PT(5) PT(6) \
    const int t7 = ((i_neighbor&MB_TOPRIGHT ? SRC(8,-1) : SRC(7,-1)) \
                     + 2*SRC(7,-1) + SRC(6,-1) + 2) >> 2; \

#define PTR(x) \
    t##x = (SRC(x-1,-1) + 2*SRC(x,-1) + SRC(x+1,-1) + 2) >> 2;
#define PREDICT_8x8_LOAD_TOPRIGHT \
    int t8, t9, t10, t11, t12, t13, t14, t15; \
    if(i_neighbor&MB_TOPRIGHT) { \
        PTR(8) PTR(9) PTR(10) PTR(11) PTR(12) PTR(13) PTR(14) \
        t15 = (SRC(14,-1) + 3*SRC(15,-1) + 2) >> 2; \
    } else t8=t9=t10=t11=t12=t13=t14=t15= SRC(7,-1);

#define PREDICT_8x8_LOAD_TOPLEFT \
    const int lt = (SRC(-1,0) + 2*SRC(-1,-1) + SRC(0,-1) + 2) >> 2;

#define PREDICT_8x8_DC(v) \
    int y; \
    for( y = 0; y < 8; y++ ) { \
        ((uint32_t*)src)[0] = \
        ((uint32_t*)src)[1] = v; \
        src += i_stride; \
    }

static void predict_8x8_dc_128( uint8_t *src, int i_stride, int i_neighbor )
{
    PREDICT_8x8_DC(0x80808080);
}
static void predict_8x8_dc_left( uint8_t *src, int i_stride, int i_neighbor )
{
    PREDICT_8x8_LOAD_LEFT
    const uint32_t dc = ((l0+l1+l2+l3+l4+l5+l6+l7+4) >> 3) * 0x01010101;
    PREDICT_8x8_DC(dc);
}
static void predict_8x8_dc_top( uint8_t *src, int i_stride, int i_neighbor )
{
    PREDICT_8x8_LOAD_TOP
    const uint32_t dc = ((t0+t1+t2+t3+t4+t5+t6+t7+4) >> 3) * 0x01010101;
    PREDICT_8x8_DC(dc);
}
static void predict_8x8_dc( uint8_t *src, int i_stride, int i_neighbor )
{
    PREDICT_8x8_LOAD_LEFT
    PREDICT_8x8_LOAD_TOP
    const uint32_t dc = ((l0+l1+l2+l3+l4+l5+l6+l7
                         +t0+t1+t2+t3+t4+t5+t6+t7+8) >> 4) * 0x01010101;
    PREDICT_8x8_DC(dc);
}
static void predict_8x8_h( uint8_t *src, int i_stride, int i_neighbor )
{
    PREDICT_8x8_LOAD_LEFT
#define ROW(y) ((uint32_t*)(src+y*i_stride))[0] =\
               ((uint32_t*)(src+y*i_stride))[1] = 0x01010101U * l##y
    ROW(0); ROW(1); ROW(2); ROW(3); ROW(4); ROW(5); ROW(6); ROW(7);
#undef ROW
}
static void predict_8x8_v( uint8_t *src, int i_stride, int i_neighbor )
{
    int y;
    PREDICT_8x8_LOAD_TOP;
    src[0] = t0;
    src[1] = t1;
    src[2] = t2;
    src[3] = t3;
    src[4] = t4;
    src[5] = t5;
    src[6] = t6;
    src[7] = t7;
    for( y = 1; y < 8; y++ )
        *(uint64_t*)(src+y*i_stride) = *(uint64_t*)src;
}
static void predict_8x8_ddl( uint8_t *src, int i_stride, int i_neighbor )
{
    PREDICT_8x8_LOAD_TOP
    PREDICT_8x8_LOAD_TOPRIGHT
    SRC(0,0)= (t0 + 2*t1 + t2 + 2) >> 2;
    SRC(0,1)=SRC(1,0)= (t1 + 2*t2 + t3 + 2) >> 2;
    SRC(0,2)=SRC(1,1)=SRC(2,0)= (t2 + 2*t3 + t4 + 2) >> 2;
    SRC(0,3)=SRC(1,2)=SRC(2,1)=SRC(3,0)= (t3 + 2*t4 + t5 + 2) >> 2;
    SRC(0,4)=SRC(1,3)=SRC(2,2)=SRC(3,1)=SRC(4,0)= (t4 + 2*t5 + t6 + 2) >> 2;
    SRC(0,5)=SRC(1,4)=SRC(2,3)=SRC(3,2)=SRC(4,1)=SRC(5,0)= (t5 + 2*t6 + t7 + 2) >> 2;
    SRC(0,6)=SRC(1,5)=SRC(2,4)=SRC(3,3)=SRC(4,2)=SRC(5,1)=SRC(6,0)= (t6 + 2*t7 + t8 + 2) >> 2;
    SRC(0,7)=SRC(1,6)=SRC(2,5)=SRC(3,4)=SRC(4,3)=SRC(5,2)=SRC(6,1)=SRC(7,0)= (t7 + 2*t8 + t9 + 2) >> 2;
    SRC(1,7)=SRC(2,6)=SRC(3,5)=SRC(4,4)=SRC(5,3)=SRC(6,2)=SRC(7,1)= (t8 + 2*t9 + t10 + 2) >> 2;
    SRC(2,7)=SRC(3,6)=SRC(4,5)=SRC(5,4)=SRC(6,3)=SRC(7,2)= (t9 + 2*t10 + t11 + 2) >> 2;
    SRC(3,7)=SRC(4,6)=SRC(5,5)=SRC(6,4)=SRC(7,3)= (t10 + 2*t11 + t12 + 2) >> 2;
    SRC(4,7)=SRC(5,6)=SRC(6,5)=SRC(7,4)= (t11 + 2*t12 + t13 + 2) >> 2;
    SRC(5,7)=SRC(6,6)=SRC(7,5)= (t12 + 2*t13 + t14 + 2) >> 2;
    SRC(6,7)=SRC(7,6)= (t13 + 2*t14 + t15 + 2) >> 2;
    SRC(7,7)= (t14 + 3*t15 + 2) >> 2;
}
static void predict_8x8_ddr( uint8_t *src, int i_stride, int i_neighbor )
{
    PREDICT_8x8_LOAD_TOP
    PREDICT_8x8_LOAD_LEFT
    PREDICT_8x8_LOAD_TOPLEFT
    SRC(0,7)= (l7 + 2*l6 + l5 + 2) >> 2;
    SRC(0,6)=SRC(1,7)= (l6 + 2*l5 + l4 + 2) >> 2;
    SRC(0,5)=SRC(1,6)=SRC(2,7)= (l5 + 2*l4 + l3 + 2) >> 2;
    SRC(0,4)=SRC(1,5)=SRC(2,6)=SRC(3,7)= (l4 + 2*l3 + l2 + 2) >> 2;
    SRC(0,3)=SRC(1,4)=SRC(2,5)=SRC(3,6)=SRC(4,7)= (l3 + 2*l2 + l1 + 2) >> 2;
    SRC(0,2)=SRC(1,3)=SRC(2,4)=SRC(3,5)=SRC(4,6)=SRC(5,7)= (l2 + 2*l1 + l0 + 2) >> 2;
    SRC(0,1)=SRC(1,2)=SRC(2,3)=SRC(3,4)=SRC(4,5)=SRC(5,6)=SRC(6,7)= (l1 + 2*l0 + lt + 2) >> 2;
    SRC(0,0)=SRC(1,1)=SRC(2,2)=SRC(3,3)=SRC(4,4)=SRC(5,5)=SRC(6,6)=SRC(7,7)= (l0 + 2*lt + t0 + 2) >> 2;
    SRC(1,0)=SRC(2,1)=SRC(3,2)=SRC(4,3)=SRC(5,4)=SRC(6,5)=SRC(7,6)= (lt + 2*t0 + t1 + 2) >> 2;
    SRC(2,0)=SRC(3,1)=SRC(4,2)=SRC(5,3)=SRC(6,4)=SRC(7,5)= (t0 + 2*t1 + t2 + 2) >> 2;
    SRC(3,0)=SRC(4,1)=SRC(5,2)=SRC(6,3)=SRC(7,4)= (t1 + 2*t2 + t3 + 2) >> 2;
    SRC(4,0)=SRC(5,1)=SRC(6,2)=SRC(7,3)= (t2 + 2*t3 + t4 + 2) >> 2;
    SRC(5,0)=SRC(6,1)=SRC(7,2)= (t3 + 2*t4 + t5 + 2) >> 2;
    SRC(6,0)=SRC(7,1)= (t4 + 2*t5 + t6 + 2) >> 2;
    SRC(7,0)= (t5 + 2*t6 + t7 + 2) >> 2;
  
}
static void predict_8x8_vr( uint8_t *src, int i_stride, int i_neighbor )
{
    PREDICT_8x8_LOAD_TOP
    PREDICT_8x8_LOAD_LEFT
    PREDICT_8x8_LOAD_TOPLEFT
    /* produce warning as l7 is unused */
    SRC(0,6)= (l5 + 2*l4 + l3 + 2) >> 2;
    SRC(0,7)= (l6 + 2*l5 + l4 + 2) >> 2;
    SRC(0,4)=SRC(1,6)= (l3 + 2*l2 + l1 + 2) >> 2;
    SRC(0,5)=SRC(1,7)= (l4 + 2*l3 + l2 + 2) >> 2;
    SRC(0,2)=SRC(1,4)=SRC(2,6)= (l1 + 2*l0 + lt + 2) >> 2;
    SRC(0,3)=SRC(1,5)=SRC(2,7)= (l2 + 2*l1 + l0 + 2) >> 2;
    SRC(0,1)=SRC(1,3)=SRC(2,5)=SRC(3,7)= (l0 + 2*lt + t0 + 2) >> 2;
    SRC(0,0)=SRC(1,2)=SRC(2,4)=SRC(3,6)= (lt + t0 + 1) >> 1;
    SRC(1,1)=SRC(2,3)=SRC(3,5)=SRC(4,7)= (lt + 2*t0 + t1 + 2) >> 2;
    SRC(1,0)=SRC(2,2)=SRC(3,4)=SRC(4,6)= (t0 + t1 + 1) >> 1;
    SRC(2,1)=SRC(3,3)=SRC(4,5)=SRC(5,7)= (t0 + 2*t1 + t2 + 2) >> 2;
    SRC(2,0)=SRC(3,2)=SRC(4,4)=SRC(5,6)= (t1 + t2 + 1) >> 1;
    SRC(3,1)=SRC(4,3)=SRC(5,5)=SRC(6,7)= (t1 + 2*t2 + t3 + 2) >> 2;
    SRC(3,0)=SRC(4,2)=SRC(5,4)=SRC(6,6)= (t2 + t3 + 1) >> 1;
    SRC(4,1)=SRC(5,3)=SRC(6,5)=SRC(7,7)= (t2 + 2*t3 + t4 + 2) >> 2;
    SRC(4,0)=SRC(5,2)=SRC(6,4)=SRC(7,6)= (t3 + t4 + 1) >> 1;
    SRC(5,1)=SRC(6,3)=SRC(7,5)= (t3 + 2*t4 + t5 + 2) >> 2;
    SRC(5,0)=SRC(6,2)=SRC(7,4)= (t4 + t5 + 1) >> 1;
    SRC(6,1)=SRC(7,3)= (t4 + 2*t5 + t6 + 2) >> 2;
    SRC(6,0)=SRC(7,2)= (t5 + t6 + 1) >> 1;
    SRC(7,1)= (t5 + 2*t6 + t7 + 2) >> 2;
    SRC(7,0)= (t6 + t7 + 1) >> 1;
}
static void predict_8x8_hd( uint8_t *src, int i_stride, int i_neighbor )
{
    PREDICT_8x8_LOAD_TOP
    PREDICT_8x8_LOAD_LEFT
    PREDICT_8x8_LOAD_TOPLEFT
    /* produce warning as t7 is unused */
    SRC(0,7)= (l6 + l7 + 1) >> 1;
    SRC(1,7)= (l5 + 2*l6 + l7 + 2) >> 2;
    SRC(0,6)=SRC(2,7)= (l5 + l6 + 1) >> 1;
    SRC(1,6)=SRC(3,7)= (l4 + 2*l5 + l6 + 2) >> 2;
    SRC(0,5)=SRC(2,6)=SRC(4,7)= (l4 + l5 + 1) >> 1;
    SRC(1,5)=SRC(3,6)=SRC(5,7)= (l3 + 2*l4 + l5 + 2) >> 2;
    SRC(0,4)=SRC(2,5)=SRC(4,6)=SRC(6,7)= (l3 + l4 + 1) >> 1;
    SRC(1,4)=SRC(3,5)=SRC(5,6)=SRC(7,7)= (l2 + 2*l3 + l4 + 2) >> 2;
    SRC(0,3)=SRC(2,4)=SRC(4,5)=SRC(6,6)= (l2 + l3 + 1) >> 1;
    SRC(1,3)=SRC(3,4)=SRC(5,5)=SRC(7,6)= (l1 + 2*l2 + l3 + 2) >> 2;
    SRC(0,2)=SRC(2,3)=SRC(4,4)=SRC(6,5)= (l1 + l2 + 1) >> 1;
    SRC(1,2)=SRC(3,3)=SRC(5,4)=SRC(7,5)= (l0 + 2*l1 + l2 + 2) >> 2;
    SRC(0,1)=SRC(2,2)=SRC(4,3)=SRC(6,4)= (l0 + l1 + 1) >> 1;
    SRC(1,1)=SRC(3,2)=SRC(5,3)=SRC(7,4)= (lt + 2*l0 + l1 + 2) >> 2;
    SRC(0,0)=SRC(2,1)=SRC(4,2)=SRC(6,3)= (lt + l0 + 1) >> 1;
    SRC(1,0)=SRC(3,1)=SRC(5,2)=SRC(7,3)= (l0 + 2*lt + t0 + 2) >> 2;
    SRC(2,0)=SRC(4,1)=SRC(6,2)= (t1 + 2*t0 + lt + 2) >> 2;
    SRC(3,0)=SRC(5,1)=SRC(7,2)= (t2 + 2*t1 + t0 + 2) >> 2;
    SRC(4,0)=SRC(6,1)= (t3 + 2*t2 + t1 + 2) >> 2;
    SRC(5,0)=SRC(7,1)= (t4 + 2*t3 + t2 + 2) >> 2;
    SRC(6,0)= (t5 + 2*t4 + t3 + 2) >> 2;
    SRC(7,0)= (t6 + 2*t5 + t4 + 2) >> 2;
}
static void predict_8x8_vl( uint8_t *src, int i_stride, int i_neighbor )
{
    PREDICT_8x8_LOAD_TOP
    PREDICT_8x8_LOAD_TOPRIGHT
    SRC(0,0)= (t0 + t1 + 1) >> 1;
    SRC(0,1)= (t0 + 2*t1 + t2 + 2) >> 2;
    SRC(0,2)=SRC(1,0)= (t1 + t2 + 1) >> 1;
    SRC(0,3)=SRC(1,1)= (t1 + 2*t2 + t3 + 2) >> 2;
    SRC(0,4)=SRC(1,2)=SRC(2,0)= (t2 + t3 + 1) >> 1;
    SRC(0,5)=SRC(1,3)=SRC(2,1)= (t2 + 2*t3 + t4 + 2) >> 2;
    SRC(0,6)=SRC(1,4)=SRC(2,2)=SRC(3,0)= (t3 + t4 + 1) >> 1;
    SRC(0,7)=SRC(1,5)=SRC(2,3)=SRC(3,1)= (t3 + 2*t4 + t5 + 2) >> 2;
    SRC(1,6)=SRC(2,4)=SRC(3,2)=SRC(4,0)= (t4 + t5 + 1) >> 1;
    SRC(1,7)=SRC(2,5)=SRC(3,3)=SRC(4,1)= (t4 + 2*t5 + t6 + 2) >> 2;
    SRC(2,6)=SRC(3,4)=SRC(4,2)=SRC(5,0)= (t5 + t6 + 1) >> 1;
    SRC(2,7)=SRC(3,5)=SRC(4,3)=SRC(5,1)= (t5 + 2*t6 + t7 + 2) >> 2;
    SRC(3,6)=SRC(4,4)=SRC(5,2)=SRC(6,0)= (t6 + t7 + 1) >> 1;
    SRC(3,7)=SRC(4,5)=SRC(5,3)=SRC(6,1)= (t6 + 2*t7 + t8 + 2) >> 2;
    SRC(4,6)=SRC(5,4)=SRC(6,2)=SRC(7,0)= (t7 + t8 + 1) >> 1;
    SRC(4,7)=SRC(5,5)=SRC(6,3)=SRC(7,1)= (t7 + 2*t8 + t9 + 2) >> 2;
    SRC(5,6)=SRC(6,4)=SRC(7,2)= (t8 + t9 + 1) >> 1;
    SRC(5,7)=SRC(6,5)=SRC(7,3)= (t8 + 2*t9 + t10 + 2) >> 2;
    SRC(6,6)=SRC(7,4)= (t9 + t10 + 1) >> 1;
    SRC(6,7)=SRC(7,5)= (t9 + 2*t10 + t11 + 2) >> 2;
    SRC(7,6)= (t10 + t11 + 1) >> 1;
    SRC(7,7)= (t10 + 2*t11 + t12 + 2) >> 2;
}
static void predict_8x8_hu( uint8_t *src, int i_stride, int i_neighbor )
{
    PREDICT_8x8_LOAD_LEFT
    SRC(0,0)= (l0 + l1 + 1) >> 1;
    SRC(1,0)= (l0 + 2*l1 + l2 + 2) >> 2;
    SRC(0,1)=SRC(2,0)= (l1 + l2 + 1) >> 1;
    SRC(1,1)=SRC(3,0)= (l1 + 2*l2 + l3 + 2) >> 2;
    SRC(0,2)=SRC(2,1)=SRC(4,0)= (l2 + l3 + 1) >> 1;
    SRC(1,2)=SRC(3,1)=SRC(5,0)= (l2 + 2*l3 + l4 + 2) >> 2;
    SRC(0,3)=SRC(2,2)=SRC(4,1)=SRC(6,0)= (l3 + l4 + 1) >> 1;
    SRC(1,3)=SRC(3,2)=SRC(5,1)=SRC(7,0)= (l3 + 2*l4 + l5 + 2) >> 2;
    SRC(0,4)=SRC(2,3)=SRC(4,2)=SRC(6,1)= (l4 + l5 + 1) >> 1;
    SRC(1,4)=SRC(3,3)=SRC(5,2)=SRC(7,1)= (l4 + 2*l5 + l6 + 2) >> 2;
    SRC(0,5)=SRC(2,4)=SRC(4,3)=SRC(6,2)= (l5 + l6 + 1) >> 1;
    SRC(1,5)=SRC(3,4)=SRC(5,3)=SRC(7,2)= (l5 + 2*l6 + l7 + 2) >> 2;
    SRC(0,6)=SRC(2,5)=SRC(4,4)=SRC(6,3)= (l6 + l7 + 1) >> 1;
    SRC(1,6)=SRC(3,5)=SRC(5,4)=SRC(7,3)= (l6 + 3*l7 + 2) >> 2;
    SRC(0,7)=SRC(1,7)=SRC(2,6)=SRC(2,7)=SRC(3,6)=
    SRC(3,7)=SRC(4,5)=SRC(4,6)=SRC(4,7)=SRC(5,5)=
    SRC(5,6)=SRC(5,7)=SRC(6,4)=SRC(6,5)=SRC(6,6)=
    SRC(6,7)=SRC(7,4)=SRC(7,5)=SRC(7,6)=SRC(7,7)= l7;
}

/****************************************************************************
 * Exported functions:
 ****************************************************************************/
void SHU264_predict_16x16_init( int cpu, SHU264_predict_t pf[7] )
{
    pf[I_PRED_16x16_V ]     = predict_16x16_v;
    pf[I_PRED_16x16_H ]     = predict_16x16_h;
    pf[I_PRED_16x16_DC]     = predict_16x16_dc;
    pf[I_PRED_16x16_P ]     = predict_16x16_p;
    pf[I_PRED_16x16_DC_LEFT]= predict_16x16_dc_left;
    pf[I_PRED_16x16_DC_TOP ]= predict_16x16_dc_top;
    pf[I_PRED_16x16_DC_128 ]= predict_16x16_dc_128;

#ifdef HAVE_MMXEXT
    if( cpu&SHU264_CPU_MMXEXT )
    {
        SHU264_predict_16x16_init_mmxext( pf );
    }
#endif
}

void SHU264_predict_8x8c_init( int cpu, SHU264_predict_t pf[7] )
{
    pf[I_PRED_CHROMA_V ]     = predict_8x8c_v;
    pf[I_PRED_CHROMA_H ]     = predict_8x8c_h;
    pf[I_PRED_CHROMA_DC]     = predict_8x8c_dc;
    pf[I_PRED_CHROMA_P ]     = predict_8x8c_p;
    pf[I_PRED_CHROMA_DC_LEFT]= predict_8x8c_dc_left;
    pf[I_PRED_CHROMA_DC_TOP ]= predict_8x8c_dc_top;
    pf[I_PRED_CHROMA_DC_128 ]= predict_8x8c_dc_128;

#ifdef HAVE_MMXEXT
    if( cpu&SHU264_CPU_MMXEXT )
    {
        SHU264_predict_8x8c_init_mmxext( pf );
    }
#endif
}

void SHU264_predict_8x8_init( int cpu, SHU264_predict8x8_t pf[12] )
{
    pf[I_PRED_8x8_V]      = predict_8x8_v;
    pf[I_PRED_8x8_H]      = predict_8x8_h;
    pf[I_PRED_8x8_DC]     = predict_8x8_dc;
    pf[I_PRED_8x8_DDL]    = predict_8x8_ddl;
    pf[I_PRED_8x8_DDR]    = predict_8x8_ddr;
    pf[I_PRED_8x8_VR]     = predict_8x8_vr;
    pf[I_PRED_8x8_HD]     = predict_8x8_hd;
    pf[I_PRED_8x8_VL]     = predict_8x8_vl;
    pf[I_PRED_8x8_HU]     = predict_8x8_hu;
    pf[I_PRED_8x8_DC_LEFT]= predict_8x8_dc_left;
    pf[I_PRED_8x8_DC_TOP] = predict_8x8_dc_top;
    pf[I_PRED_8x8_DC_128] = predict_8x8_dc_128;
}

void SHU264_predict_4x4_init( int cpu, SHU264_predict_t pf[12] )
{
    pf[I_PRED_4x4_V]      = predict_4x4_v;
    pf[I_PRED_4x4_H]      = predict_4x4_h;
    pf[I_PRED_4x4_DC]     = predict_4x4_dc;
    pf[I_PRED_4x4_DDL]    = predict_4x4_ddl;
    pf[I_PRED_4x4_DDR]    = predict_4x4_ddr;
    pf[I_PRED_4x4_VR]     = predict_4x4_vr;
    pf[I_PRED_4x4_HD]     = predict_4x4_hd;
    pf[I_PRED_4x4_VL]     = predict_4x4_vl;
    pf[I_PRED_4x4_HU]     = predict_4x4_hu;
    pf[I_PRED_4x4_DC_LEFT]= predict_4x4_dc_left;
    pf[I_PRED_4x4_DC_TOP] = predict_4x4_dc_top;
    pf[I_PRED_4x4_DC_128] = predict_4x4_dc_128;

#ifdef HAVE_MMXEXT
    if( cpu&SHU264_CPU_MMXEXT )
    {
        SHU264_predict_4x4_init_mmxext( pf );
    }
#endif
}