diff options
Diffstat (limited to 'src/iemlib1/sigpara_bp2.c')
-rw-r--r-- | src/iemlib1/sigpara_bp2.c | 852 |
1 files changed, 426 insertions, 426 deletions
diff --git a/src/iemlib1/sigpara_bp2.c b/src/iemlib1/sigpara_bp2.c index bc6fe49..af20782 100644 --- a/src/iemlib1/sigpara_bp2.c +++ b/src/iemlib1/sigpara_bp2.c @@ -1,426 +1,426 @@ -/* 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 - 2003 */ - -#ifdef NT -#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~")); -} +/* 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 NT
+#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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