46 const uint16_t *revtabj = s->
revtab;
47 const uint16_t *revtabk = s->
revtab+n4;
56 vec_f cos,sin,cos0,sin0,cos1,sin1,
re,
im,r0,i0,r1,i1,a,
b,c,d;
57 #define CMULA(p,o0,o1,o2,o3)\
60 re = vec_perm(a, b, vcprm(0,2,s0,s2)); \
61 im = vec_perm(a, b, vcprm(s3,s1,3,1)); \
62 cos = vec_perm(cos0, cos1, vcprm(o0,o1,s##o2,s##o3)); \
63 sin = vec_perm(sin0, sin1, vcprm(o0,o1,s##o2,s##o3));\
64 r##p = im*cos - re*sin;\
65 i##p = re*cos + im*sin;
66 #define STORE2(v,dst)\
68 vec_ste(v, 0, output+j*2);\
69 vec_ste(v, 4, output+j*2);
71 a = vec_perm(r##p, i##p, vcprm(0,s0,0,s0));\
72 b = vec_perm(r##p, i##p, vcprm(1,s1,1,s1));\
73 c = vec_perm(r##p, i##p, vcprm(2,s2,2,s2));\
74 d = vec_perm(r##p, i##p, vcprm(3,s3,3,s3));\
75 STORE2(a, revtabk[ p*2-4]);\
76 STORE2(b, revtabk[ p*2-3]);\
77 STORE2(c, revtabj[-p*2+2]);\
78 STORE2(d, revtabj[-p*2+3]);
100 #define CMULB(d0,d1,o)\
105 d0 = im*sin - re*cos;\
106 d1 = re*sin + im*cos;
110 pout[2*j] = vec_perm(a, d,
vcprm(0,
s3,1,
s2));
111 pout[2*j+1] = vec_perm(a, d,
vcprm(2,
s1,3,
s0));
112 pout[2*k] = vec_perm(c, b,
vcprm(0,
s3,1,
s2));
113 pout[2*k+1] = vec_perm(c, b,
vcprm(2,
s1,3,
s0));
125 vec_u32 sign = {1
U<<31,1
U<<31,1U<<31,1U<<31};
129 ff_imdct_half_altivec(s, output+n4, input);
131 for (k = 0; k < n16; k++) {
134 p0[-k-1] = vec_perm(a, a,
vcprm(3,2,1,0));
135 p1[k] = vec_perm(b, b,
vcprm(3,2,1,0));