From 386b0b74b0133acb7caddc0f31f5ebbf255efc00 Mon Sep 17 00:00:00 2001 From: Hans-Christoph Steiner Date: Tue, 10 Nov 2009 01:47:02 +0000 Subject: split out d_math.c into standalone objects svn path=/trunk/; revision=12736 --- externals/vanilla/dbtopow~.c | 52 ++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 52 insertions(+) create mode 100644 externals/vanilla/dbtopow~.c (limited to 'externals/vanilla/dbtopow~.c') diff --git a/externals/vanilla/dbtopow~.c b/externals/vanilla/dbtopow~.c new file mode 100644 index 00000000..777c5bf5 --- /dev/null +++ b/externals/vanilla/dbtopow~.c @@ -0,0 +1,52 @@ +/* Copyright (c) 1997-2001 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 "d_math.h" + +typedef struct dbtopow_tilde +{ + t_object x_obj; + t_float x_f; +} t_dbtopow_tilde; + +t_class *dbtopow_tilde_class; + +static void *dbtopow_tilde_new(void) +{ + t_dbtopow_tilde *x = (t_dbtopow_tilde *)pd_new(dbtopow_tilde_class); + outlet_new(&x->x_obj, gensym("signal")); + x->x_f = 0; + return (x); +} + +static t_int *dbtopow_tilde_perform(t_int *w) +{ + t_sample *in = *(t_sample **)(w+1), *out = *(t_sample **)(w+2); + t_int n = *(t_int *)(w+3); + for (; n--; in++, out++) + { + t_sample f = *in; + if (f <= 0) *out = 0; + else + { + if (f > 870) + f = 870; + *out = exp((LOGTEN * 0.1) * (f-100.)); + } + } + return (w + 4); +} + +static void dbtopow_tilde_dsp(t_dbtopow_tilde *x, t_signal **sp) +{ + dsp_add(dbtopow_tilde_perform, 3, sp[0]->s_vec, sp[1]->s_vec, sp[0]->s_n); +} + +void dbtopow_tilde_setup(void) +{ + dbtopow_tilde_class = class_new(gensym("dbtopow~"), (t_newmethod)dbtopow_tilde_new, 0, + sizeof(t_dbtopow_tilde), 0, 0); + CLASS_MAINSIGNALIN(dbtopow_tilde_class, t_dbtopow_tilde, x_f); + class_addmethod(dbtopow_tilde_class, (t_method)dbtopow_tilde_dsp, gensym("dsp"), 0); +} -- cgit v1.2.1