45 #if HAVE_GNU_AS && HAVE_ALTIVEC && (HAVE_BIGENDIAN || HAVE_VSX)
49 int n = 1 <<
s->mdct_bits;
53 const uint16_t *revtabj =
s->revtab;
54 const uint16_t *revtabk =
s->revtab+n4;
63 vec_f cos,sin,cos0,sin0,cos1,sin1,
re,
im,r0,i0,r1,i1,
a,
b,
c,d;
64 #define CMULA(p,o0,o1,o2,o3)\
67 re = vec_perm(a, b, vcprm(0,2,s0,s2)); \
68 im = vec_perm(a, b, vcprm(s3,s1,3,1)); \
69 cos = vec_perm(cos0, cos1, vcprm(o0,o1,s##o2,s##o3)); \
70 sin = vec_perm(sin0, sin1, vcprm(o0,o1,s##o2,s##o3));\
71 r##p = im*cos - re*sin;\
72 i##p = re*cos + im*sin;
73 #define STORE2(v,dst)\
75 vec_ste(v, 0, output+j*2);\
76 vec_ste(v, 4, output+j*2);
78 a = vec_perm(r##p, i##p, vcprm(0,s0,0,s0));\
79 b = vec_perm(r##p, i##p, vcprm(1,s1,1,s1));\
80 c = vec_perm(r##p, i##p, vcprm(2,s2,2,s2));\
81 d = vec_perm(r##p, i##p, vcprm(3,s3,3,s3));\
82 STORE2(a, revtabk[ p*2-4]);\
83 STORE2(b, revtabk[ p*2-3]);\
84 STORE2(c, revtabj[-p*2+2]);\
85 STORE2(d, revtabj[-p*2+3]);
111 #define CMULB(d0,d1,o)\
116 d0 = im*sin - re*cos;\
117 d1 = re*sin + im*cos;
121 pout[2*j] = vec_perm(
a, d, vcprm(0,
s3,1,
s2));
122 pout[2*j+1] = vec_perm(
a, d, vcprm(2,
s1,3,
s0));
123 pout[2*k] = vec_perm(
c,
b, vcprm(0,
s3,1,
s2));
124 pout[2*k+1] = vec_perm(
c,
b, vcprm(2,
s1,3,
s0));
133 int n = 1 <<
s->mdct_bits;
136 vec_u32 sign = {1U<<31,1U<<31,1U<<31,1U<<31};
140 imdct_half_altivec(
s, output + n4, input);
142 for (k = 0; k < n16; k++) {
145 p0[-k-1] = vec_perm(
a,
a, vcprm(3,2,1,0));
146 p1[k] = vec_perm(
b,
b, vcprm(3,2,1,0));
153 #if HAVE_GNU_AS && HAVE_ALTIVEC && (HAVE_BIGENDIAN || HAVE_VSX)
158 s->fft_calc = ff_fft_calc_interleave_vsx;
162 if (
s->mdct_bits >= 5) {
163 s->imdct_calc = imdct_calc_altivec;
164 s->imdct_half = imdct_half_altivec;
int av_get_cpu_flags(void)
Return the flags which specify extensions supported by the CPU.
#define PPC_ALTIVEC(flags)
void ff_fft_calc_interleave_altivec(FFTContext *s, FFTComplex *z)
av_cold void ff_fft_init_ppc(FFTContext *s)
void ff_fft_calc_altivec(FFTContext *s, FFTComplex *z)
Do a complex FFT with the parameters defined in ff_fft_init().
Contains misc utility macros and inline functions.