20 #define FFT_FIXED_32 0 26 int i, j, n, n8, n4, n2, n3;
28 const uint16_t *revtab = s->
revtab;
42 re =
RSCALE(-input[2*i+n3], - input[n3-1-2*i]);
43 im =
RSCALE(-input[n4+2*i], + input[n4-1-2*i]);
45 CMUL(x[j].re, x[j].im, re, im, -tcos[i], tsin[i]);
47 re =
RSCALE( input[2*i] , - input[n2-1-2*i]);
48 im =
RSCALE(-input[n2+2*i], - input[ n-1-2*i]);
50 CMUL(x[j].re, x[j].im, re, im, -tcos[n8 + i], tsin[n8 + i]);
58 CMULL(i1, r0, x[n8-i-1].re, x[n8-i-1].im, -tsin[n8-i-1], -tcos[n8-i-1]);
59 CMULL(i0, r1, x[n8+i ].re, x[n8+i ].im, -tsin[n8+i ], -tcos[n8+i ]);
#define CMUL(dre, dim, are, aim, bre, bim)
#define CMULL(dre, dim, are, aim, bre, bim)
void ff_mdct_calcw_c(FFTContext *s, FFTDouble *out, const FFTSample *input)
and forward the test the status of outputs and forward it to the corresponding return FFERROR_NOT_READY If the filters stores internally one or a few frame for some input
void(* fft_calc)(struct FFTContext *s, FFTComplex *z)
Do a complex FFT with the parameters defined in ff_fft_init().