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/* Copyright (c) 1997-1999 Miller Puckette and others.
* For information on usage and redistribution, and for a DISCLAIMER OF ALL
* WARRANTIES, see the file, "LICENSE.txt," in this distribution. */
#include "fftw~.h"
#ifdef HAVE_LIBFFTW3F
/* Support for fftw3 by Tim Blechmann */
/* ------------------------ fft~ -------------------------------- */
static t_class *sigfftw_class;
typedef struct fftw
{
t_object x_obj;
float x_f;
fftwf_plan plan;
fftwf_iodim dim;
} t_sigfftw;
static void *sigfftw_new(void)
{
t_sigfftw *x = (t_sigfftw *)pd_new(sigfftw_class);
outlet_new(&x->x_obj, gensym("signal"));
outlet_new(&x->x_obj, gensym("signal"));
inlet_new(&x->x_obj, &x->x_obj.ob_pd, &s_signal, &s_signal);
x->x_f = 0;
return (x);
}
static void sigfftw_free(t_sigfftw * x)
{
fftwf_destroy_plan(x->plan);
}
static t_int *sigfftw_perform(t_int *w)
{
fftwf_execute(*(fftwf_plan *)w[1]);
return (w+2);
}
static void sigfftw_dsp(t_sigfftw *x, t_signal **sp)
{
int n = sp[0]->s_n;
float *in1 = sp[0]->s_vec;
float *in2 = sp[1]->s_vec;
float *out1 = sp[2]->s_vec;
float *out2 = sp[3]->s_vec;
x->dim.n=n;
x->dim.is=1;
x->dim.os=1;
x->plan = fftwf_plan_guru_split_dft(1, &(x->dim), 0,
NULL,
in1, in2, out1, out2,
FFTW_ESTIMATE);
dsp_add(sigfftw_perform, 1, &x->plan);
}
EXTERNAL_SETUP fftw_tilde_setup(void)
{
sigfftw_class = class_new(gensym("fftw~"), sigfftw_new,
(t_method) sigfftw_free,
sizeof(t_sigfftw), 0, 0);
CLASS_MAINSIGNALIN(sigfftw_class, t_sigfftw, x_f);
class_addmethod(sigfftw_class, (t_method)sigfftw_dsp,
gensym("dsp"), 0);
}
#endif
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