362 #define AVG3(a, b, c) (((a) + 2 * (b) + (c) + 2) >> 2)  macro
367     AVG3(top[-1], top[0], top[1]),  in VE4()
368     AVG3(top[ 0], top[1], top[2]),  in VE4()
369     AVG3(top[ 1], top[2], top[3]),  in VE4()
370     AVG3(top[ 2], top[3], top[4])  in VE4()
384   *(uint32_t*)(dst + 0 * BPS) = 0x01010101U * AVG3(X, I, J);  in HE4()
385   *(uint32_t*)(dst + 1 * BPS) = 0x01010101U * AVG3(I, J, K);  in HE4()
386   *(uint32_t*)(dst + 2 * BPS) = 0x01010101U * AVG3(J, K, L);  in HE4()
387   *(uint32_t*)(dst + 3 * BPS) = 0x01010101U * AVG3(K, L, L);  in HE4()
407   DST(0, 3)                                     = AVG3(J, K, L);  in RD4()
408   DST(0, 2) = DST(1, 3)                         = AVG3(I, J, K);  in RD4()
409   DST(0, 1) = DST(1, 2) = DST(2, 3)             = AVG3(X, I, J);  in RD4()
410   DST(0, 0) = DST(1, 1) = DST(2, 2) = DST(3, 3) = AVG3(A, X, I);  in RD4()
411   DST(1, 0) = DST(2, 1) = DST(3, 2)             = AVG3(B, A, X);  in RD4()
412   DST(2, 0) = DST(3, 1)                         = AVG3(C, B, A);  in RD4()
413   DST(3, 0)                                     = AVG3(D, C, B);  in RD4()
425   DST(0, 0)                                     = AVG3(A, B, C);  in LD4()
426   DST(1, 0) = DST(0, 1)                         = AVG3(B, C, D);  in LD4()
427   DST(2, 0) = DST(1, 1) = DST(0, 2)             = AVG3(C, D, E);  in LD4()
428   DST(3, 0) = DST(2, 1) = DST(1, 2) = DST(0, 3) = AVG3(D, E, F);  in LD4()
429   DST(3, 1) = DST(2, 2) = DST(1, 3)             = AVG3(E, F, G);  in LD4()
430   DST(3, 2) = DST(2, 3)                         = AVG3(F, G, H);  in LD4()
431   DST(3, 3)                                     = AVG3(G, H, H);  in LD4()
448   DST(0, 3) =             AVG3(K, J, I);  in VR4()
449   DST(0, 2) =             AVG3(J, I, X);  in VR4()
450   DST(0, 1) = DST(1, 3) = AVG3(I, X, A);  in VR4()
451   DST(1, 1) = DST(2, 3) = AVG3(X, A, B);  in VR4()
452   DST(2, 1) = DST(3, 3) = AVG3(A, B, C);  in VR4()
453   DST(3, 1) =             AVG3(B, C, D);  in VR4()
470   DST(0, 1) =             AVG3(A, B, C);  in VL4()
471   DST(1, 1) = DST(0, 3) = AVG3(B, C, D);  in VL4()
472   DST(2, 1) = DST(1, 3) = AVG3(C, D, E);  in VL4()
473   DST(3, 1) = DST(2, 3) = AVG3(D, E, F);  in VL4()
474               DST(3, 2) = AVG3(E, F, G);  in VL4()
475               DST(3, 3) = AVG3(F, G, H);  in VL4()
486   DST(1, 0) =             AVG3(I, J, K);  in HU4()
487   DST(3, 0) = DST(1, 1) = AVG3(J, K, L);  in HU4()
488   DST(3, 1) = DST(1, 2) = AVG3(K, L, L);  in HU4()
508   DST(3, 0)             = AVG3(A, B, C);  in HD4()
509   DST(2, 0)             = AVG3(X, A, B);  in HD4()
510   DST(1, 0) = DST(3, 1) = AVG3(I, X, A);  in HD4()
511   DST(1, 1) = DST(3, 2) = AVG3(J, I, X);  in HD4()
512   DST(1, 2) = DST(3, 3) = AVG3(K, J, I);  in HD4()
513   DST(1, 3)             = AVG3(L, K, J);  in HD4()
529 #undef AVG3