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-rw-r--r--modules/bdiag.c277
1 files changed, 0 insertions, 277 deletions
diff --git a/modules/bdiag.c b/modules/bdiag.c
deleted file mode 100644
index b18c1b2..0000000
--- a/modules/bdiag.c
+++ /dev/null
@@ -1,277 +0,0 @@
-/*
- * bdiag.c - block diagonal state space system
- * treats input dsp block as n parallel signals
- *
- * s1 = (a * s1) + (b * s2) + u1;
- * s2 = (a * s2) - (b * s1) + u2;
- *
- * Copyright (c) 2000-2003 by Tom Schouten
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
- */
-
-#include <m_pd.h>
-#include <math.h>
-#include <stdio.h>
-#include <stdlib.h>
-#ifndef IS_DENORMAL
-#include "extlib_util.h"
-#endif
-
-#define MAXORDER 64
-
-typedef struct bdiagctl
-{
- t_float *c_state;
- t_float *c_eigen;
- t_int c_order;
-} t_bdiagctl;
-
-typedef struct bdiag
-{
- t_object x_obj;
- t_float x_f;
- t_bdiagctl x_ctl;
-} t_bdiag;
-
-
-static float randfloat(void){
- float r = rand ();
- r /= (RAND_MAX/2);
- r -= 1;
- return r;
-
-}
-
-static void bdiag_random(t_bdiag *x)
-{
- int i;
-
- for (i=0; i<x->x_ctl.c_order; i++)
- {
- x->x_ctl.c_state[i] = randfloat();
- }
-
-}
-
-
-static void bdiag_reset(t_bdiag *x)
-{
- int i;
-
- for (i=0; i<x->x_ctl.c_order; i++)
- {
- x->x_ctl.c_state[i] = 0;
- }
-
-}
-
-
-
-
-
-
-static void bdiag_eigen(t_bdiag *x, t_floatarg index, t_floatarg aval, t_floatarg bval)
-{
- int i = (int)index;
- if (i<0) return;
- if (i>=x->x_ctl.c_order/2) return;
- x->x_ctl.c_eigen[2*i+0] = aval;
- x->x_ctl.c_eigen[2*i+1] = bval;
-
-}
-
-/* set decay time and frequency of pole at index */
-static void bdiag_timefreq(t_bdiag *x, t_floatarg index, t_floatarg time, t_floatarg freq)
-{
- float r,a,b,n;
- float sr = sys_getsr() / (float)x->x_ctl.c_order;
-
- /* time in ms */
- time *= 0.001;
-
- if (time < 0.0f) time = 0.0f;
- r = pow(0.001f, 1.0f / (time * sr));
- if (r < 0.0f) r = 0.0f;
- if (r > 1.0f) r = 1.0f;
-
- a = cos(2*M_PI*freq/sr);
- b = sin(2*M_PI*freq/sr);
-
- /* normalize to be sure */
- n = 1.0f / sqrt(a*a + b*b);
- a *= n;
- b *= n;
-
- bdiag_eigen(x, index, r*a, r*b);
-}
-
-static void bdiag_preset(t_bdiag *x, t_floatarg preset)
-{
- int p = preset;
- int i;
- float a, b, w, r;
-
- switch(p){
- case 0:
- post("preset 0");
- for (i=0; i<x->x_ctl.c_order/2; i++){
- w = randfloat() * .001;
- r = 1. - (((float)i + 1.)/1000.);
- a = cos(w) * r;
- b = sin(w) * r;
- post("%f %f %f %f", w, r, a, b);
- bdiag_eigen(x,i,a,b);
- }
- break;
- case 1:
- default:
- break;
-
- }
-}
-
-static t_int *bdiag_perform(t_int *w)
-{
-
-
- t_float *in = (float *)(w[3]);
- t_float *out = (float *)(w[4]);
- t_bdiagctl *ctl = (t_bdiagctl *)(w[1]);
-
- t_float *eigen = ctl->c_eigen;
- t_float *state = ctl->c_state;
- t_int n = (t_int)(w[2]);
-
- t_float u1,u2,a,b,s1,s2,s1new,s2new;
-
- int i;
-
- for (i=0; i<n; i+=2)
- {
- u1 = *in++;
- u2 = *in++;
- a = *eigen++; /* real part */
- b = *eigen++; /* imag part */
- s1 = state[0];
- s2 = state[1];
-
-
- s1new = (a * s1) - (b * s2) + u1; /* update state */
- s2new = (a * s2) + (b * s1) + u2;
-
- s1new = IS_DENORMAL(s1new) ? 0 : s1new; /* clear denormals */
- s2new = IS_DENORMAL(s2new) ? 0 : s2new;
-
- *state++ = s1new; /* store state */
- *state++ = s2new;
-
- *out++ = s1new; /* output state */
- *out++ = s2new;
- }
-
- return (w+5);
-}
-
-
-static void bdiag_dsp(t_bdiag *x, t_signal **sp)
-{
-
- int n = sp[0]->s_n;
- int i;
-
- if (n == 1)
- {
- post("bdiag: doesnt work with blocksize == 1");
- dsp_add_copy(sp[0]->s_vec, sp[1]->s_vec, sp[0]->s_n);
- }
- else
- {
- if (x->x_ctl.c_order != n)
- {
- if (x->x_ctl.c_state) free(x->x_ctl.c_state);
- if (x->x_ctl.c_eigen) free(x->x_ctl.c_eigen);
-
- x->x_ctl.c_state = (t_float *)malloc(n*sizeof(t_float));
- x->x_ctl.c_eigen = (t_float *)malloc(n*sizeof(t_float));
-
- for(i=0;i<n;i++)
- {
- x->x_ctl.c_state[i] = 0;
- x->x_ctl.c_eigen[i] = 0;
- }
-
- x->x_ctl.c_order = n;
- }
-
-
- dsp_add(bdiag_perform, 4, &x->x_ctl, sp[0]->s_n, sp[0]->s_vec, sp[1]->s_vec);
- }
-
-}
-
-static void bdiag_free(t_bdiag *x)
-{
-
- if (x->x_ctl.c_state) free(x->x_ctl.c_state);
- if (x->x_ctl.c_eigen) free(x->x_ctl.c_eigen);
-
-
-}
-
-t_class *bdiag_class;
-
-
-static void *bdiag_new(t_floatarg permute)
-{
- t_bdiag *x = (t_bdiag *)pd_new(bdiag_class);
- int i, n=64;
-
- outlet_new(&x->x_obj, gensym("signal"));
-
- x->x_ctl.c_state = (t_float *)malloc(n*sizeof(t_float));
- x->x_ctl.c_eigen = (t_float *)malloc(n*sizeof(t_float));
-
- for(i=0;i<n;i++)
- {
- x->x_ctl.c_state[i] = 0;
- x->x_ctl.c_eigen[i] = 0;
- }
-
- x->x_ctl.c_order = n;
-
-
- return (void *)x;
-
-
-}
-
-
-void bdiag_tilde_setup(void)
-{
- //post("bdiag~ v0.1");
- bdiag_class = class_new(gensym("bdiag~"), (t_newmethod)bdiag_new,
- (t_method)bdiag_free, sizeof(t_bdiag), 0, A_DEFFLOAT, 0);
- CLASS_MAINSIGNALIN(bdiag_class, t_bdiag, x_f);
- class_addmethod(bdiag_class, (t_method)bdiag_random, gensym("random"), 0);
- class_addmethod(bdiag_class, (t_method)bdiag_random, gensym("bang"), 0);
- class_addmethod(bdiag_class, (t_method)bdiag_reset, gensym("reset"), 0);
- class_addmethod(bdiag_class, (t_method)bdiag_dsp, gensym("dsp"), 0);
-
- class_addmethod(bdiag_class, (t_method)bdiag_eigen, gensym("eigen"), A_DEFFLOAT, A_DEFFLOAT, A_DEFFLOAT, 0);
- class_addmethod(bdiag_class, (t_method)bdiag_timefreq, gensym("timefreq"), A_DEFFLOAT, A_DEFFLOAT, A_DEFFLOAT, 0);
- class_addmethod(bdiag_class, (t_method)bdiag_preset, gensym("preset"), A_DEFFLOAT, 0);
-}
-
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