1 files changed, 48 insertions, 0 deletions
diff --git a/externals/vanilla/ifft~.c b/externals/vanilla/ifft~.c
new file mode 100644
index 00000000..84577df3
--- /dev/null
+++ b/externals/vanilla/ifft~.c
@@ -0,0 +1,48 @@
+/* Copyright (c) 1997- 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 "m_pd.h"
+#include "e_fft.h"
+
+/* This file interfaces to one of the Mayer, Ooura, or fftw FFT packages
+to implement the "fft~", etc, Pd objects.  If using Mayer, also compile
+d_fft_mayer.c; if ooura, use d_fft_fftsg.c instead; if fftw, use d_fft_fftw.c
+and also link in the fftw library.  You can only have one of these three
+linked in.  The configure script can be used to select which one.
+*/
+
+static t_class *sigifft_class;
+
+static void *sigifft_new(void)
+{
+    t_sigfft *x = (t_sigfft *)pd_new(sigifft_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 t_int *sigifft_perform(t_int *w)
+{
+    t_sample *in1 = (t_sample *)(w[1]);
+    t_sample *in2 = (t_sample *)(w[2]);
+    int n = w[3];
+    mayer_ifft(n, in1, in2);
+    return (w+4);
+}
+
+static void sigifft_dsp(t_sigfft *x, t_signal **sp)
+{
+    sigfft_dspx(x, sp, sigifft_perform);
+}
+
+void ifft_tilde_setup(void)
+{
+    sigifft_class = class_new(gensym("ifft~"), sigifft_new, 0,
+        sizeof(t_sigfft), 0, 0);
+    CLASS_MAINSIGNALIN(sigifft_class, t_sigfft, x_f);
+    class_addmethod(sigifft_class, (t_method)sigifft_dsp, gensym("dsp"), 0);
+    class_sethelpsymbol(sigifft_class, gensym("fft~"));
+}