172 #define DST(x, y) dst[(x) + (y) * BPS]  macro
297   DST(0, 3)                                     = AVG3(J, K, L);  in RD4()
298   DST(0, 2) = DST(1, 3)                         = AVG3(I, J, K);  in RD4()
299   DST(0, 1) = DST(1, 2) = DST(2, 3)             = AVG3(X, I, J);  in RD4()
300   DST(0, 0) = DST(1, 1) = DST(2, 2) = DST(3, 3) = AVG3(A, X, I);  in RD4()
301   DST(1, 0) = DST(2, 1) = DST(3, 2)             = AVG3(B, A, X);  in RD4()
302   DST(2, 0) = DST(3, 1)                         = AVG3(C, B, A);  in RD4()
303   DST(3, 0)                                     = AVG3(D, C, B);  in RD4()
315   DST(0, 0)                                     = AVG3(A, B, C);  in LD4()
316   DST(1, 0) = DST(0, 1)                         = AVG3(B, C, D);  in LD4()
317   DST(2, 0) = DST(1, 1) = DST(0, 2)             = AVG3(C, D, E);  in LD4()
318   DST(3, 0) = DST(2, 1) = DST(1, 2) = DST(0, 3) = AVG3(D, E, F);  in LD4()
319   DST(3, 1) = DST(2, 2) = DST(1, 3)             = AVG3(E, F, G);  in LD4()
320   DST(3, 2) = DST(2, 3)                         = AVG3(F, G, H);  in LD4()
321   DST(3, 3)                                     = AVG3(G, H, H);  in LD4()
333   DST(0, 0) = DST(1, 2) = AVG2(X, A);  in VR4()
334   DST(1, 0) = DST(2, 2) = AVG2(A, B);  in VR4()
335   DST(2, 0) = DST(3, 2) = AVG2(B, C);  in VR4()
336   DST(3, 0)             = AVG2(C, D);  in VR4()
338   DST(0, 3) =             AVG3(K, J, I);  in VR4()
339   DST(0, 2) =             AVG3(J, I, X);  in VR4()
340   DST(0, 1) = DST(1, 3) = AVG3(I, X, A);  in VR4()
341   DST(1, 1) = DST(2, 3) = AVG3(X, A, B);  in VR4()
342   DST(2, 1) = DST(3, 3) = AVG3(A, B, C);  in VR4()
343   DST(3, 1) =             AVG3(B, C, D);  in VR4()
355   DST(0, 0) =             AVG2(A, B);  in VL4()
356   DST(1, 0) = DST(0, 2) = AVG2(B, C);  in VL4()
357   DST(2, 0) = DST(1, 2) = AVG2(C, D);  in VL4()
358   DST(3, 0) = DST(2, 2) = AVG2(D, E);  in VL4()
360   DST(0, 1) =             AVG3(A, B, C);  in VL4()
361   DST(1, 1) = DST(0, 3) = AVG3(B, C, D);  in VL4()
362   DST(2, 1) = DST(1, 3) = AVG3(C, D, E);  in VL4()
363   DST(3, 1) = DST(2, 3) = AVG3(D, E, F);  in VL4()
364               DST(3, 2) = AVG3(E, F, G);  in VL4()
365               DST(3, 3) = AVG3(F, G, H);  in VL4()
373   DST(0, 0) =             AVG2(I, J);  in HU4()
374   DST(2, 0) = DST(0, 1) = AVG2(J, K);  in HU4()
375   DST(2, 1) = DST(0, 2) = AVG2(K, L);  in HU4()
376   DST(1, 0) =             AVG3(I, J, K);  in HU4()
377   DST(3, 0) = DST(1, 1) = AVG3(J, K, L);  in HU4()
378   DST(3, 1) = DST(1, 2) = AVG3(K, L, L);  in HU4()
379   DST(3, 2) = DST(2, 2) =  in HU4()
380     DST(0, 3) = DST(1, 3) = DST(2, 3) = DST(3, 3) = L;  in HU4()
393   DST(0, 0) = DST(2, 1) = AVG2(I, X);  in HD4()
394   DST(0, 1) = DST(2, 2) = AVG2(J, I);  in HD4()
395   DST(0, 2) = DST(2, 3) = AVG2(K, J);  in HD4()
396   DST(0, 3)             = AVG2(L, K);  in HD4()
398   DST(3, 0)             = AVG3(A, B, C);  in HD4()
399   DST(2, 0)             = AVG3(X, A, B);  in HD4()
400   DST(1, 0) = DST(3, 1) = AVG3(I, X, A);  in HD4()
401   DST(1, 1) = DST(3, 2) = AVG3(J, I, X);  in HD4()
402   DST(1, 2) = DST(3, 3) = AVG3(K, J, I);  in HD4()
403   DST(1, 3)             = AVG3(L, K, J);  in HD4()
406 #undef DST