diff options
Diffstat (limited to 'src/iemlib1/sigrvu.c')
| -rw-r--r-- | src/iemlib1/sigrvu.c | 187 |
1 files changed, 0 insertions, 187 deletions
diff --git a/src/iemlib1/sigrvu.c b/src/iemlib1/sigrvu.c deleted file mode 100644 index d579a3f..0000000 --- a/src/iemlib1/sigrvu.c +++ /dev/null @@ -1,187 +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> - -/* ---------------- rvu~ - simple peak&rms-vu-meter. ----------------- */ - -typedef struct sigrvu -{ - t_object x_obj; - void *x_clock_metro; - int x_metro_time; - float x_sum_rms; - float x_old_rms; - float x_rcp; - float x_sr; - float x_release_time; - float x_c1; - int x_started; - float x_msi; -} t_sigrvu; - -t_class *sigrvu_class; -static void sigrvu_tick_metro(t_sigrvu *x); - -static void sigrvu_reset(t_sigrvu *x) -{ - outlet_float(x->x_obj.ob_outlet, -99.9f); - x->x_sum_rms = 0.0f; - x->x_old_rms = 0.0f; - clock_delay(x->x_clock_metro, x->x_metro_time); -} - -static void sigrvu_stop(t_sigrvu *x) -{ - clock_unset(x->x_clock_metro); - x->x_started = 0; -} - -static void sigrvu_start(t_sigrvu *x) -{ - clock_delay(x->x_clock_metro, x->x_metro_time); - x->x_started = 1; -} - -static void sigrvu_float(t_sigrvu *x, t_floatarg f) -{ - if(f == 0.0) - { - clock_unset(x->x_clock_metro); - x->x_started = 0; - } - else - { - clock_delay(x->x_clock_metro, x->x_metro_time); - x->x_started = 1; - } -} - -static void sigrvu_t_release(t_sigrvu *x, t_floatarg release_time) -{ - if(release_time <= 20.0f) - release_time = 20.0f; - x->x_release_time = release_time; - x->x_c1 = exp(-2.0*(float)x->x_metro_time/x->x_release_time); -} - -static void sigrvu_t_metro(t_sigrvu *x, t_floatarg metro_time) -{ - if(metro_time <= 20.0f) - metro_time = 20.0f; - x->x_metro_time = (int)metro_time; - x->x_c1 = exp(-2.0*(float)x->x_metro_time/x->x_release_time); - x->x_rcp = 1.0f/(x->x_sr*(float)x->x_metro_time); -} - -static t_int *sigrvu_perform(t_int *w) -{ - float *in = (float *)(w[1]); - t_sigrvu *x = (t_sigrvu *)(w[2]); - int n = (int)(w[3]); - float pow, sum=x->x_sum_rms; - int i; - - if(x->x_started) - { - for(i=0; i<n; i++) - { - sum += in[i]*in[i]; - } - x->x_sum_rms = sum; - } - return(w+4); -} - -static void sigrvu_dsp(t_sigrvu *x, t_signal **sp) -{ - x->x_sr = 0.001*(float)sp[0]->s_sr; - x->x_rcp = 1.0f/(x->x_sr*(float)x->x_metro_time); - dsp_add(sigrvu_perform, 3, sp[0]->s_vec, x, sp[0]->s_n); - clock_delay(x->x_clock_metro, x->x_metro_time); -} - -static void sigrvu_tick_metro(t_sigrvu *x) -{ - float dbr, cur_rms, c1=x->x_c1; - - cur_rms = (1.0f - c1)*x->x_sum_rms*x->x_rcp + c1*x->x_old_rms; - /* NAN protect */ - if(IEM_DENORMAL(cur_rms)) - cur_rms = 0.0f; - - if(cur_rms <= 0.0000000001f) - dbr = -99.9f; - else if(cur_rms > 1000000.0f) - { - dbr = 60.0f; - x->x_old_rms = 1000000.0f; - } - else - dbr = 4.3429448195f*log(cur_rms); - x->x_sum_rms = 0.0f; - x->x_old_rms = cur_rms; - outlet_float(x->x_obj.ob_outlet, dbr); - clock_delay(x->x_clock_metro, x->x_metro_time); -} - -static void sigrvu_ff(t_sigrvu *x) -{ - clock_free(x->x_clock_metro); -} - -static void *sigrvu_new(t_floatarg metro_time, t_floatarg release_time) -{ - t_sigrvu *x=(t_sigrvu *)pd_new(sigrvu_class); - float t; - int i; - - if(metro_time <= 0.0f) - metro_time = 300.0f; - if(metro_time <= 20.0f) - metro_time = 20.0f; - if(release_time <= 0.0f) - release_time = 300.0f; - if(release_time <= 20.0f) - release_time = 20.0f; - x->x_metro_time = (int)metro_time; - x->x_release_time = release_time; - x->x_c1 = exp(-2.0*(float)x->x_metro_time/x->x_release_time); - x->x_sum_rms = 0.0f; - x->x_old_rms = 0.0f; - x->x_sr = 44.1f; - x->x_rcp = 1.0f/(x->x_sr*(float)x->x_metro_time); - x->x_clock_metro = clock_new(x, (t_method)sigrvu_tick_metro); - x->x_started = 1; - outlet_new(&x->x_obj, &s_float); - x->x_msi = 0.0f; - return(x); -} - -void sigrvu_setup(void) -{ - sigrvu_class = class_new(gensym("rvu~"), (t_newmethod)sigrvu_new, - (t_method)sigrvu_ff, sizeof(t_sigrvu), 0, - A_DEFFLOAT, A_DEFFLOAT, 0); - CLASS_MAINSIGNALIN(sigrvu_class, t_sigrvu, x_msi); - class_addmethod(sigrvu_class, (t_method)sigrvu_dsp, gensym("dsp"), 0); - class_addfloat(sigrvu_class, sigrvu_float); - class_addmethod(sigrvu_class, (t_method)sigrvu_reset, gensym("reset"), 0); - class_addmethod(sigrvu_class, (t_method)sigrvu_start, gensym("start"), 0); - class_addmethod(sigrvu_class, (t_method)sigrvu_stop, gensym("stop"), 0); - class_addmethod(sigrvu_class, (t_method)sigrvu_t_release, gensym("t_release"), A_FLOAT, 0); - class_addmethod(sigrvu_class, (t_method)sigrvu_t_metro, gensym("t_metro"), A_FLOAT, 0); - class_sethelpsymbol(sigrvu_class, gensym("iemhelp/help-rvu~")); -} |