From 0c9b89b1018eb7760708ee5b080cd96846861328 Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?IOhannes=20m=20zm=C3=B6lnig?= Date: Thu, 2 Jun 2005 18:25:00 +0000 Subject: updated to release-1.16 svn path=/trunk/externals/iemlib/; revision=3102 --- src/iemlib2/sigm2f.c | 252 +++++++++++++++++++++++++-------------------------- 1 file changed, 125 insertions(+), 127 deletions(-) (limited to 'src/iemlib2/sigm2f.c') diff --git a/src/iemlib2/sigm2f.c b/src/iemlib2/sigm2f.c index f623905..8ff2e9b 100644 --- a/src/iemlib2/sigm2f.c +++ b/src/iemlib2/sigm2f.c @@ -1,127 +1,125 @@ -/* Copyright (c) 1997-2003 Miller Puckette. -* For information on usage and redistribution, and for a DISCLAIMER OF ALL -* WARRANTIES, see the file, "LICENSE.txt," in this distribution. - -iemlib2 written by Thomas Musil (c) IEM KUG Graz Austria 2000 - 2003 */ - -#ifdef NT -#pragma warning( disable : 4244 ) -#pragma warning( disable : 4305 ) -#endif - -#include "m_pd.h" -#include "iemlib.h" -#include -#include -#include -#include - -/* ------------------------ m2f~ ----------------------------- */ - -#define M2FTABSIZE 2048 - -float *iem_m2f_table=(float *)0L; - -static t_class *sigm2f_class; - -typedef struct _sigm2f -{ - t_object x_obj; - float x_msi; -} t_sigm2f; - -static void *sigm2f_new(void) -{ - t_sigm2f *x = (t_sigm2f *)pd_new(sigm2f_class); - outlet_new(&x->x_obj, gensym("signal")); - x->x_msi = 0; - return (x); -} - -static t_int *sigm2f_perform(t_int *w) -{ - t_float *in = (t_float *)(w[1]); - t_float *out = (t_float *)(w[2]); - t_sigm2f *x = (t_sigm2f *)(w[3]); - int n = (int)(w[4]); - float *tab = iem_m2f_table, *addr, f1, f2, frac, iinn; - double dphase; - int normhipart; - union tabfudge tf; - - tf.tf_d = UNITBIT32; - normhipart = tf.tf_i[HIOFFSET]; - -#if 0 /* this is the readable version of the code. */ - while (n--) - { - iinn = (*in++)*10.0+670.0; - dphase = (double)iinn + UNITBIT32; - tf.tf_d = dphase; - addr = tab + (tf.tf_i[HIOFFSET] & (M2FTABSIZE-1)); - tf.tf_i[HIOFFSET] = normhipart; - frac = tf.tf_d - UNITBIT32; - f1 = addr[0]; - f2 = addr[1]; - *out++ = f1 + frac * (f2 - f1); - } -#endif -#if 1 /* this is the same, unwrapped by hand. */ - iinn = (*in++)*10.0+670.0; - dphase = (double)iinn + UNITBIT32; - tf.tf_d = dphase; - addr = tab + (tf.tf_i[HIOFFSET] & (M2FTABSIZE-1)); - tf.tf_i[HIOFFSET] = normhipart; - while (--n) - { - iinn = (*in++)*10.0+670.0; - dphase = (double)iinn + UNITBIT32; - frac = tf.tf_d - UNITBIT32; - tf.tf_d = dphase; - f1 = addr[0]; - f2 = addr[1]; - addr = tab + (tf.tf_i[HIOFFSET] & (M2FTABSIZE-1)); - *out++ = f1 + frac * (f2 - f1); - tf.tf_i[HIOFFSET] = normhipart; - } - frac = tf.tf_d - UNITBIT32; - f1 = addr[0]; - f2 = addr[1]; - *out++ = f1 + frac * (f2 - f1); -#endif - return (w+5); -} - -static void sigm2f_dsp(t_sigm2f *x, t_signal **sp) -{ - dsp_add(sigm2f_perform, 4, sp[0]->s_vec, sp[1]->s_vec, x, sp[0]->s_n); -} - -static void sigm2f_maketable(void) -{ - union tabfudge tf; - - if(!iem_m2f_table) - { - int i; - float *fp, midi, refexp=440.0*exp(-5.75*log(2.0)); - - iem_m2f_table = (float *)getbytes(sizeof(float) * (M2FTABSIZE+1)); - for(i=0, fp=iem_m2f_table, midi=-67.0; i<=M2FTABSIZE; i++, fp++, midi+=0.1) - *fp = refexp * exp(0.057762265047 * midi); - } - tf.tf_d = UNITBIT32 + 0.5; - if((unsigned)tf.tf_i[LOWOFFSET] != 0x80000000) - bug("m2f~: unexpected machine alignment"); -} - -void sigm2f_setup(void) -{ - sigm2f_class = class_new(gensym("m2f~"), (t_newmethod)sigm2f_new, 0, - sizeof(t_sigm2f), 0, 0); - CLASS_MAINSIGNALIN(sigm2f_class, t_sigm2f, x_msi); - class_addmethod(sigm2f_class, (t_method)sigm2f_dsp, gensym("dsp"), 0); - sigm2f_maketable(); - class_sethelpsymbol(sigm2f_class, gensym("iemhelp/help-m2f~")); -} - +/* For information on usage and redistribution, and for a DISCLAIMER OF ALL +* WARRANTIES, see the file, "LICENSE.txt," in this distribution. + +iemlib2 written by Thomas Musil, Copyright (c) IEM KUG Graz Austria 2000 - 2005 */ + +#ifdef NT +#pragma warning( disable : 4244 ) +#pragma warning( disable : 4305 ) +#endif + +#include "m_pd.h" +#include "iemlib.h" +#include +#include +#include + +/* ----------- m2f~ ----------- */ +/* --------- obsolete --------- */ + +#define M2FTABSIZE 2048 + +float *iem_m2f_table=(float *)0L; + +static t_class *sigm2f_class; + +typedef struct _sigm2f +{ + t_object x_obj; + float x_msi; +} t_sigm2f; + +static void *sigm2f_new(void) +{ + t_sigm2f *x = (t_sigm2f *)pd_new(sigm2f_class); + outlet_new(&x->x_obj, gensym("signal")); + x->x_msi = 0; + return (x); +} + +static t_int *sigm2f_perform(t_int *w) +{ + t_float *in = (t_float *)(w[1]); + t_float *out = (t_float *)(w[2]); + t_sigm2f *x = (t_sigm2f *)(w[3]); + int n = (int)(w[4]); + float *tab = iem_m2f_table, *addr, f1, f2, frac, iinn; + double dphase; + int normhipart; + union tabfudge tf; + + tf.tf_d = UNITBIT32; + normhipart = tf.tf_i[HIOFFSET]; + +#if 0 /* this is the readable version of the code. */ + while (n--) + { + iinn = (*in++)*10.0+670.0; + dphase = (double)iinn + UNITBIT32; + tf.tf_d = dphase; + addr = tab + (tf.tf_i[HIOFFSET] & (M2FTABSIZE-1)); + tf.tf_i[HIOFFSET] = normhipart; + frac = tf.tf_d - UNITBIT32; + f1 = addr[0]; + f2 = addr[1]; + *out++ = f1 + frac * (f2 - f1); + } +#endif +#if 1 /* this is the same, unwrapped by hand. */ + iinn = (*in++)*10.0+670.0; + dphase = (double)iinn + UNITBIT32; + tf.tf_d = dphase; + addr = tab + (tf.tf_i[HIOFFSET] & (M2FTABSIZE-1)); + tf.tf_i[HIOFFSET] = normhipart; + while (--n) + { + iinn = (*in++)*10.0+670.0; + dphase = (double)iinn + UNITBIT32; + frac = tf.tf_d - UNITBIT32; + tf.tf_d = dphase; + f1 = addr[0]; + f2 = addr[1]; + addr = tab + (tf.tf_i[HIOFFSET] & (M2FTABSIZE-1)); + *out++ = f1 + frac * (f2 - f1); + tf.tf_i[HIOFFSET] = normhipart; + } + frac = tf.tf_d - UNITBIT32; + f1 = addr[0]; + f2 = addr[1]; + *out++ = f1 + frac * (f2 - f1); +#endif + return (w+5); +} + +static void sigm2f_dsp(t_sigm2f *x, t_signal **sp) +{ + dsp_add(sigm2f_perform, 4, sp[0]->s_vec, sp[1]->s_vec, x, sp[0]->s_n); +} + +static void sigm2f_maketable(void) +{ + union tabfudge tf; + + if(!iem_m2f_table) + { + int i; + float *fp, midi, refexp=440.0*exp(-5.75*log(2.0)); + + iem_m2f_table = (float *)getbytes(sizeof(float) * (M2FTABSIZE+1)); + for(i=0, fp=iem_m2f_table, midi=-67.0; i<=M2FTABSIZE; i++, fp++, midi+=0.1) + *fp = refexp * exp(0.057762265047 * midi); + } + tf.tf_d = UNITBIT32 + 0.5; + if((unsigned)tf.tf_i[LOWOFFSET] != 0x80000000) + bug("m2f~: unexpected machine alignment"); +} + +void sigm2f_setup(void) +{ + sigm2f_class = class_new(gensym("m2f~"), (t_newmethod)sigm2f_new, 0, + sizeof(t_sigm2f), 0, 0); + CLASS_MAINSIGNALIN(sigm2f_class, t_sigm2f, x_msi); + class_addmethod(sigm2f_class, (t_method)sigm2f_dsp, gensym("dsp"), 0); + sigm2f_maketable(); + class_sethelpsymbol(sigm2f_class, gensym("iemhelp/help-m2f~")); +} -- cgit v1.2.1