From c38056e5242f42c13130bac5ccdc14c86dc91814 Mon Sep 17 00:00:00 2001
From: musil <tmusil@users.sourceforge.net>
Date: Wed, 8 Nov 2006 13:46:14 +0000
Subject: changed sig*.c to *~.c

svn path=/trunk/externals/iemlib/; revision=6232
---
 src/iemlib1/sigpara_bp2.c | 426 ----------------------------------------------
 1 file changed, 426 deletions(-)
 delete mode 100644 src/iemlib1/sigpara_bp2.c

(limited to 'src/iemlib1/sigpara_bp2.c')

diff --git a/src/iemlib1/sigpara_bp2.c b/src/iemlib1/sigpara_bp2.c
deleted file mode 100644
index d14d26d..0000000
--- a/src/iemlib1/sigpara_bp2.c
+++ /dev/null
@@ -1,426 +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 <math.h>
-#include <stdio.h>
-#include <string.h>
-
-
-/* ---------- para_bp2~ - parametric bandpass 2. order ----------- */
-
-typedef struct sigpara_bp2
-{
-  t_object x_obj;
-  float wn1;
-  float wn2;
-  float a0;
-  float a1;
-  float a2;
-  float b1;
-  float b2;
-  float sr;
-  float cur_f;
-  float cur_l;
-  float cur_a;
-  float cur_g;
-  float delta_f;
-  float delta_a;
-  float delta_g;
-  float end_f;
-  float end_a;
-  float end_g;
-  float ticks_per_interpol_time;
-  float rcp_ticks;
-  float interpol_time;
-  int   ticks;
-  int   counter_f;
-  int   counter_a;
-  int   counter_g;
-  int   event_mask;
-  void  *x_debug_outlet;
-  t_atom x_at[5];
-  float x_msi;
-} t_sigpara_bp2;
-
-t_class *sigpara_bp2_class;
-
-static void sigpara_bp2_calc(t_sigpara_bp2 *x)
-{
-  float l, al, gal, l2, rcp;
-  
-  l = x->cur_l;
-  l2 = l*l + 1.0;
-  al = l*x->cur_a;
-  gal = al*x->cur_g;
-  rcp = 1.0f/(al + l2);
-  x->a0 = rcp*(l2 + gal);
-  x->a1 = rcp*2.0f*(2.0f - l2);
-  x->a2 = rcp*(l2 - gal);
-  x->b1 = -x->a1;
-  x->b2 = rcp*(al - l2);
-}
-
-static void sigpara_bp2_dsp_tick(t_sigpara_bp2 *x)
-{
-  if(x->event_mask)
-  {
-    float discriminant;
-    
-    if(x->counter_f)
-    {
-      float l, si, co;
-      
-      if(x->counter_f <= 1)
-      {
-        x->cur_f = x->end_f;
-        x->counter_f = 0;
-        x->event_mask &= 6;/*set event_mask_bit 0 = 0*/
-      }
-      else
-      {
-        x->counter_f--;
-        x->cur_f *= x->delta_f;
-      }
-      l = x->cur_f * x->sr;
-      if(l < 1.0e-20f)
-        x->cur_l = 1.0e20f;
-      else if(l > 1.57079632f)
-        x->cur_l = 0.0f;
-      else
-      {
-        si = sin(l);
-        co = cos(l);
-        x->cur_l = co/si;
-      }
-    }
-    if(x->counter_a)
-    {
-      if(x->counter_a <= 1)
-      {
-        x->cur_a = x->end_a;
-        x->counter_a = 0;
-        x->event_mask &= 5;/*set event_mask_bit 1 = 0*/
-      }
-      else
-      {
-        x->counter_a--;
-        x->cur_a *= x->delta_a;
-      }
-    }
-    if(x->counter_g)
-    {
-      if(x->counter_g <= 1)
-      {
-        x->cur_g = x->end_g;
-        x->counter_g = 0;
-        x->event_mask &= 3;/*set event_mask_bit 2 = 0*/
-      }
-      else
-      {
-        x->counter_g--;
-        x->cur_g *= x->delta_g;
-      }
-    }
-    
-    sigpara_bp2_calc(x);
-    
-    /* stability check */
-    
-    discriminant = x->b1 * x->b1 + 4.0f * x->b2;
-    if(x->b1 <= -1.9999996f)
-      x->b1 = -1.9999996f;
-    else if(x->b1 >= 1.9999996f)
-      x->b1 = 1.9999996f;
-    
-    if(x->b2 <= -0.9999998f)
-      x->b2 = -0.9999998f;
-    else if(x->b2 >= 0.9999998f)
-      x->b2 = 0.9999998f;
-    
-    if(discriminant >= 0.0f)
-    {
-      if(0.9999998f - x->b1 - x->b2 < 0.0f)
-        x->b2 = 0.9999998f - x->b1;
-      if(0.9999998f + x->b1 - x->b2 < 0.0f)
-        x->b2 = 0.9999998f + x->b1;
-    }
-  }
-}
-
-static t_int *sigpara_bp2_perform(t_int *w)
-{
-  float *in = (float *)(w[1]);
-  float *out = (float *)(w[2]);
-  t_sigpara_bp2 *x = (t_sigpara_bp2 *)(w[3]);
-  int i, n = (t_int)(w[4]);
-  float wn0, wn1=x->wn1, wn2=x->wn2;
-  float a0=x->a0, a1=x->a1, a2=x->a2;
-  float b1=x->b1, b2=x->b2;
-  
-  sigpara_bp2_dsp_tick(x);
-  for(i=0; i<n; i++)
-  {
-    wn0 = *in++ + b1*wn1 + b2*wn2;
-    *out++ = a0*wn0 + a1*wn1 + a2*wn2;
-    wn2 = wn1;
-    wn1 = wn0;
-  }
-  /* NAN protect */
-  if(IEM_DENORMAL(wn2))
-    wn2 = 0.0f;
-  if(IEM_DENORMAL(wn1))
-    wn1 = 0.0f;
-  
-  x->wn1 = wn1;
-  x->wn2 = wn2;
-  return(w+5);
-}
-/*   yn0 = *out;
-xn0 = *in;
-*************
-yn0 = a0*xn0 + a1*xn1 + a2*xn2 + b1*yn1 + b2*yn2;
-yn2 = yn1;
-yn1 = yn0;
-xn2 = xn1;
-xn1 = xn0;
-*************************
-y/x = (a0 + a1*z-1 + a2*z-2)/(1 - b1*z-1 - b2*z-2);*/
-
-static t_int *sigpara_bp2_perf8(t_int *w)
-{
-  float *in = (float *)(w[1]);
-  float *out = (float *)(w[2]);
-  t_sigpara_bp2 *x = (t_sigpara_bp2 *)(w[3]);
-  int i, n = (t_int)(w[4]);
-  float wn[10];
-  float a0=x->a0, a1=x->a1, a2=x->a2;
-  float b1=x->b1, b2=x->b2;
-  
-  sigpara_bp2_dsp_tick(x);
-  wn[0] = x->wn2;
-  wn[1] = x->wn1;
-  for(i=0; i<n; i+=8, in+=8, out+=8)
-  {
-    wn[2] = in[0] + b1*wn[1] + b2*wn[0];
-    out[0] = a0*wn[2] + a1*wn[1] + a2*wn[0];
-    wn[3] = in[1] + b1*wn[2] + b2*wn[1];
-    out[1] = a0*wn[3] + a1*wn[2] + a2*wn[1];
-    wn[4] = in[2] + b1*wn[3] + b2*wn[2];
-    out[2] = a0*wn[4] + a1*wn[3] + a2*wn[2];
-    wn[5] = in[3] + b1*wn[4] + b2*wn[3];
-    out[3] = a0*wn[5] + a1*wn[4] + a2*wn[3];
-    wn[6] = in[4] + b1*wn[5] + b2*wn[4];
-    out[4] = a0*wn[6] + a1*wn[5] + a2*wn[4];
-    wn[7] = in[5] + b1*wn[6] + b2*wn[5];
-    out[5] = a0*wn[7] + a1*wn[6] + a2*wn[5];
-    wn[8] = in[6] + b1*wn[7] + b2*wn[6];
-    out[6] = a0*wn[8] + a1*wn[7] + a2*wn[6];
-    wn[9] = in[7] + b1*wn[8] + b2*wn[7];
-    out[7] = a0*wn[9] + a1*wn[8] + a2*wn[7];
-    wn[0] = wn[8];
-    wn[1] = wn[9];
-  }
-  /* NAN protect */
-  if(IEM_DENORMAL(wn[0]))
-    wn[0] = 0.0f;
-  if(IEM_DENORMAL(wn[1]))
-    wn[1] = 0.0f;
-  
-  x->wn1 = wn[1];
-  x->wn2 = wn[0];
-  return(w+5);
-}
-
-static void sigpara_bp2_ft4(t_sigpara_bp2 *x, t_floatarg t)
-{
-  int i = (int)((x->ticks_per_interpol_time)*t);
-  
-  x->interpol_time = t;
-  if(i <= 0)
-    i = 1;
-  x->ticks = i;
-  x->rcp_ticks = 1.0f / (float)i;
-}
-
-static void sigpara_bp2_ft3(t_sigpara_bp2 *x, t_floatarg l)
-{
-  float g = exp(0.11512925465 * l);
-  
-  if(g != x->cur_g)
-  {
-    x->end_g = g;
-    x->counter_g = x->ticks;
-    x->delta_g = exp(log(g/x->cur_g)*x->rcp_ticks);
-    x->event_mask |= 4;/*set event_mask_bit 2 = 1*/
-  }
-}
-
-static void sigpara_bp2_ft2(t_sigpara_bp2 *x, t_floatarg q)
-{
-  float a;
-  
-  if(q <= 0.0f)
-    q = 0.000001f;
-  a = 1.0f/q;
-  if(a != x->cur_a)
-  {
-    x->end_a = a;
-    x->counter_a = x->ticks;
-    x->delta_a = exp(log(a/x->cur_a)*x->rcp_ticks);
-    x->event_mask |= 2;/*set event_mask_bit 1 = 1*/
-  }
-}
-
-static void sigpara_bp2_ft1(t_sigpara_bp2 *x, t_floatarg f)
-{
-  if(f <= 0.0f)
-    f = 0.000001f;
-  if(f != x->cur_f)
-  {
-    x->end_f = f;
-    x->counter_f = x->ticks;
-    x->delta_f = exp(log(f/x->cur_f)*x->rcp_ticks);
-    x->event_mask |= 1;/*set event_mask_bit 0 = 1*/
-  }
-}
-
-static void sigpara_bp2_print(t_sigpara_bp2 *x)
-{
-  //  post("fb1 = %g, fb2 = %g, ff1 = %g, ff2 = %g, ff3 = %g", x->b1, x->b2, x->a0, x->a1, x->a2);
-  x->x_at[0].a_w.w_float = x->b1;
-  x->x_at[1].a_w.w_float = x->b2;
-  x->x_at[2].a_w.w_float = x->a0;
-  x->x_at[3].a_w.w_float = x->a1;
-  x->x_at[4].a_w.w_float = x->a2;
-  outlet_list(x->x_debug_outlet, &s_list, 5, x->x_at);
-}
-
-static void sigpara_bp2_dsp(t_sigpara_bp2 *x, t_signal **sp)
-{
-  float si, co, f;
-  int i, n=(int)sp[0]->s_n;
-  
-  x->sr = 3.14159265358979323846f / (float)(sp[0]->s_sr);
-  x->ticks_per_interpol_time = 0.001f * (float)(sp[0]->s_sr) / (float)n;
-  i = (int)((x->ticks_per_interpol_time)*(x->interpol_time));
-  if(i <= 0)
-    i = 1;
-  x->ticks = i;
-  x->rcp_ticks = 1.0f / (float)i;
-  f = x->cur_f * x->sr;
-  if(f < 1.0e-20f)
-    x->cur_l = 1.0e20f;
-  else if(f > 1.57079632f)
-    x->cur_l = 0.0f;
-  else
-  {
-    si = sin(f);
-    co = cos(f);
-    x->cur_l = co/si;
-  }
-  if(n&7)
-    dsp_add(sigpara_bp2_perform, 4, sp[0]->s_vec, sp[1]->s_vec, x, n);
-  else
-    dsp_add(sigpara_bp2_perf8, 4, sp[0]->s_vec, sp[1]->s_vec, x, n);
-}
-
-static void *sigpara_bp2_new(t_symbol *s, int argc, t_atom *argv)
-{
-  t_sigpara_bp2 *x = (t_sigpara_bp2 *)pd_new(sigpara_bp2_class);
-  int i;
-  float si, co, f=0.0, q=1.0, l=0.0, interpol=0.0;
-  
-  inlet_new(&x->x_obj, &x->x_obj.ob_pd, &s_float, gensym("ft1"));
-  inlet_new(&x->x_obj, &x->x_obj.ob_pd, &s_float, gensym("ft2"));
-  inlet_new(&x->x_obj, &x->x_obj.ob_pd, &s_float, gensym("ft3"));
-  inlet_new(&x->x_obj, &x->x_obj.ob_pd, &s_float, gensym("ft4"));
-  outlet_new(&x->x_obj, &s_signal);
-  x->x_debug_outlet = outlet_new(&x->x_obj, &s_list);
-  x->x_msi = 0;
-  
-  x->x_at[0].a_type = A_FLOAT;
-  x->x_at[1].a_type = A_FLOAT;
-  x->x_at[2].a_type = A_FLOAT;
-  x->x_at[3].a_type = A_FLOAT;
-  x->x_at[4].a_type = A_FLOAT;
-  
-  x->event_mask = 1;
-  x->counter_f = 1;
-  x->counter_a = 0;
-  x->counter_g = 0;
-  x->delta_f = 0.0f;
-  x->delta_a = 0.0f;
-  x->delta_g = 0.0f;
-  x->interpol_time = 500.0f;
-  x->wn1 = 0.0;
-  x->wn2 = 0.0;
-  x->a0 = 0.0;
-  x->a1 = 0.0;
-  x->a2 = 0.0;
-  x->b1 = 0.0;
-  x->b2 = 0.0;
-  x->sr = 3.14159265358979323846f / 44100.0f;
-  x->cur_a = 1.0;
-  if((argc == 4)&&IS_A_FLOAT(argv,3)&&IS_A_FLOAT(argv,2)&&IS_A_FLOAT(argv,1)&&IS_A_FLOAT(argv,0))
-  {
-    f = (float)atom_getfloatarg(0, argc, argv);
-    q = (float)atom_getfloatarg(1, argc, argv);
-    l = (float)atom_getfloatarg(2, argc, argv);
-    interpol = (float)atom_getfloatarg(3, argc, argv);
-  }
-  if(f <= 0.0f)
-    f = 0.000001f;
-  x->cur_f = f;
-  f *= x->sr;
-  if(f < 1.0e-20f)
-    x->cur_l = 1.0e20f;
-  else if(f > 1.57079632f)
-    x->cur_l = 0.0f;
-  else
-  {
-    si = sin(f);
-    co = cos(f);
-    x->cur_l = co/si;
-  }
-  if(q <= 0.0f)
-    q = 0.000001f;
-  x->cur_a = 1.0f/q;
-  x->cur_g = exp(0.11512925465 * l);
-  if(interpol <= 0.0f)
-    interpol = 0.0f;
-  x->interpol_time = interpol;
-  x->ticks_per_interpol_time = 0.5f;
-  i = (int)((x->ticks_per_interpol_time)*(x->interpol_time));
-  if(i <= 0)
-    i = 1;
-  x->ticks = i;
-  x->rcp_ticks = 1.0f / (float)i;
-  x->end_f = x->cur_f;
-  x->end_a = x->cur_a;
-  x->end_g = x->cur_g;
-  return(x);
-}
-
-void sigpara_bp2_setup(void)
-{
-  sigpara_bp2_class = class_new(gensym("para_bp2~"), (t_newmethod)sigpara_bp2_new,
-        0, sizeof(t_sigpara_bp2), 0, A_GIMME, 0);
-  CLASS_MAINSIGNALIN(sigpara_bp2_class, t_sigpara_bp2, x_msi);
-  class_addmethod(sigpara_bp2_class, (t_method)sigpara_bp2_dsp, gensym("dsp"), 0);
-  class_addmethod(sigpara_bp2_class, (t_method)sigpara_bp2_ft1, gensym("ft1"), A_FLOAT, 0);
-  class_addmethod(sigpara_bp2_class, (t_method)sigpara_bp2_ft2, gensym("ft2"), A_FLOAT, 0);
-  class_addmethod(sigpara_bp2_class, (t_method)sigpara_bp2_ft3, gensym("ft3"), A_FLOAT, 0);
-  class_addmethod(sigpara_bp2_class, (t_method)sigpara_bp2_ft4, gensym("ft4"), A_FLOAT, 0);
-  class_addmethod(sigpara_bp2_class, (t_method)sigpara_bp2_print, gensym("print"), 0);
-  class_sethelpsymbol(sigpara_bp2_class, gensym("iemhelp/help-para_bp2~"));
-}
-- 
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