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int find_sad_16x16(int *intra_mode)
{
int current_intra_sad_2,best_intra_sad2;
int M1[16][16],M0[4][4][4][4],M3[4],M4[4][4];
int i,j,k;
int ii,jj;
int up_avail, left_avail, left_up_avail;
for (i=0;i<17;i++)
if (left_up_avail)
{
for (jj=0;jj<4;jj++)
for (ii=0;ii<4;ii++)
for (j=0;j<4;j++)
for (i=0;i<4;i++)
{
M0[i][ii][2][jj]=M3[0]-M3[1];
M0[i][ii][1][jj]=M3[2]+M3[3];
current_intra_sad_2 += abs(M0[i][ii][j][jj]);
}
if(current_intra_sad_2 < best_intra_sad2)
best_intra_sad2=current_intra_sad_2;
}
}
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