From c38056e5242f42c13130bac5ccdc14c86dc91814 Mon Sep 17 00:00:00 2001 From: musil Date: Wed, 8 Nov 2006 13:46:14 +0000 Subject: changed sig*.c to *~.c svn path=/trunk/externals/iemlib/; revision=6232 --- src/iemlib1/sigiem_cot4.c | 175 ---------------------------------------------- 1 file changed, 175 deletions(-) delete mode 100644 src/iemlib1/sigiem_cot4.c (limited to 'src/iemlib1/sigiem_cot4.c') diff --git a/src/iemlib1/sigiem_cot4.c b/src/iemlib1/sigiem_cot4.c deleted file mode 100644 index 85bc19a..0000000 --- a/src/iemlib1/sigiem_cot4.c +++ /dev/null @@ -1,175 +0,0 @@ -/* For information on usage and redistribution, and for a DISCLAIMER OF ALL -* WARRANTIES, see the file, "LICENSE.txt," in this distribution. - -iemlib1 written by Thomas Musil, Copyright (c) IEM KUG Graz Austria 2000 - 2005 */ - -#ifdef _MSC_VER -#pragma warning( disable : 4244 ) -#pragma warning( disable : 4305 ) -#endif - - -#include "m_pd.h" -#include "iemlib.h" -#include -#include -#include - -/* ------------------------ iem_cot4~ ----------------------------- */ - -float *iem_cot4_table_cos=(float *)0L; -float *iem_cot4_table_sin=(float *)0L; - -static t_class *sigiem_cot4_class; - -typedef struct _sigiem_cot4 -{ - t_object x_obj; - float x_sr; - float x_msi; -} t_sigiem_cot4; - -static t_int *sigiem_cot4_perform(t_int *w) -{ - t_float *in = (t_float *)(w[1]); - t_float *out = (t_float *)(w[2]); - t_float norm_freq; - t_float hout; - t_sigiem_cot4 *x = (t_sigiem_cot4 *)(w[3]); - t_float sr=x->x_sr; - int n = (int)(w[4]); - float *ctab = iem_cot4_table_cos, *stab = iem_cot4_table_sin; - float *caddr, *saddr, cf1, cf2, sf1, sf2, frac; - double dphase; - int normhipart; - int32 mytfi; - union tabfudge tf; - - tf.tf_d = UNITBIT32; - normhipart = tf.tf_i[HIOFFSET]; - -#if 0 /* this is the readable version of the code. */ - while (n--) - { - norm_freq = *in * sr; - if(norm_freq < 0.0001f) - norm_freq = 0.0001f; - else if(norm_freq > 0.9f) - norm_freq = 0.9f; - dphase = (double)(norm_freq * (float)(COSTABSIZE)) + UNITBIT32; - tf.tf_d = dphase; - mytfi = tf.tf_i[HIOFFSET] & (COSTABSIZE-1); - saddr = stab + (mytfi); - caddr = ctab + (mytfi); - tf.tf_i[HIOFFSET] = normhipart; - frac = tf.tf_d - UNITBIT32; - sf1 = saddr[0]; - sf2 = saddr[1]; - cf1 = caddr[0]; - cf2 = caddr[1]; - in++; - *out++ = (cf1 + frac * (cf2 - cf1))/(sf1 + frac * (sf2 - sf1)); - } -#endif -#if 1 /* this is the same, unwrapped by hand. prolog beg*/ - n /= 4; - norm_freq = *in * sr; - if(norm_freq < 0.0001f) - norm_freq = 0.0001f; - else if(norm_freq > 0.9f) - norm_freq = 0.9f; - dphase = (double)(norm_freq * (float)(COSTABSIZE)) + UNITBIT32; - tf.tf_d = dphase; - mytfi = tf.tf_i[HIOFFSET] & (COSTABSIZE-1); - saddr = stab + (mytfi); - caddr = ctab + (mytfi); - tf.tf_i[HIOFFSET] = normhipart; - in += 4; /*prolog end*/ - while (--n) - { - norm_freq = *in * sr; - if(norm_freq < 0.0001f) - norm_freq = 0.0001f; - else if(norm_freq > 0.9f) - norm_freq = 0.9f; - dphase = (double)(norm_freq * (float)(COSTABSIZE)) + UNITBIT32; - frac = tf.tf_d - UNITBIT32; - tf.tf_d = dphase; - sf1 = saddr[0]; - sf2 = saddr[1]; - cf1 = caddr[0]; - cf2 = caddr[1]; - mytfi = tf.tf_i[HIOFFSET] & (COSTABSIZE-1); - saddr = stab + (mytfi); - caddr = ctab + (mytfi); - hout = (cf1 + frac * (cf2 - cf1))/(sf1 + frac * (sf2 - sf1)); - *out++ = hout; - *out++ = hout; - *out++ = hout; - *out++ = hout; - in += 4; - tf.tf_i[HIOFFSET] = normhipart; - }/*epilog beg*/ - frac = tf.tf_d - UNITBIT32; - sf1 = saddr[0]; - sf2 = saddr[1]; - cf1 = caddr[0]; - cf2 = caddr[1]; - hout = (cf1 + frac * (cf2 - cf1))/(sf1 + frac * (sf2 - sf1)); - *out++ = hout; - *out++ = hout; - *out++ = hout; - *out++ = hout; - /*epilog end*/ -#endif - return (w+5); -} - -static void sigiem_cot4_dsp(t_sigiem_cot4 *x, t_signal **sp) -{ - x->x_sr = 2.0f / (float)sp[0]->s_sr; - dsp_add(sigiem_cot4_perform, 4, sp[0]->s_vec, sp[1]->s_vec, x, sp[0]->s_n); -} - -static void sigiem_cot4_maketable(void) -{ - int i; - float *fp, phase, fff, phsinc = 0.5*3.141592653 / ((float)COSTABSIZE); - union tabfudge tf; - - if(!iem_cot4_table_sin) - { - iem_cot4_table_sin = (float *)getbytes(sizeof(float) * (COSTABSIZE+1)); - for(i=COSTABSIZE+1, fp=iem_cot4_table_sin, phase=0; i--; fp++, phase+=phsinc) - *fp = sin(phase); - } - if(!iem_cot4_table_cos) - { - iem_cot4_table_cos = (float *)getbytes(sizeof(float) * (COSTABSIZE+1)); - for(i=COSTABSIZE+1, fp=iem_cot4_table_cos, phase=0; i--; fp++, phase+=phsinc) - *fp = cos(phase); - } - tf.tf_d = UNITBIT32 + 0.5; - if((unsigned)tf.tf_i[LOWOFFSET] != 0x80000000) - bug("iem_cot4~: unexpected machine alignment"); -} - -static void *sigiem_cot4_new(void) -{ - t_sigiem_cot4 *x = (t_sigiem_cot4 *)pd_new(sigiem_cot4_class); - - outlet_new(&x->x_obj, gensym("signal")); - x->x_msi = 0; - return (x); -} - -void sigiem_cot4_setup(void) -{ - sigiem_cot4_class = class_new(gensym("iem_cot4~"), (t_newmethod)sigiem_cot4_new, 0, - sizeof(t_sigiem_cot4), 0, 0); - class_addcreator((t_newmethod)sigiem_cot4_new, gensym("iem_cot~"), 0); - CLASS_MAINSIGNALIN(sigiem_cot4_class, t_sigiem_cot4, x_msi); - class_addmethod(sigiem_cot4_class, (t_method)sigiem_cot4_dsp, gensym("dsp"), 0); - sigiem_cot4_maketable(); - class_sethelpsymbol(sigiem_cot4_class, gensym("iemhelp/help-iem_cot4~")); -} -- cgit v1.2.1