diff options
Diffstat (limited to 'src/iemlib1/rvu~.c')
| -rw-r--r-- | src/iemlib1/rvu~.c | 178 |
1 files changed, 0 insertions, 178 deletions
diff --git a/src/iemlib1/rvu~.c b/src/iemlib1/rvu~.c deleted file mode 100644 index 21638d5..0000000 --- a/src/iemlib1/rvu~.c +++ /dev/null @@ -1,178 +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 */ - - -#include "m_pd.h" -#include "iemlib.h" -#include <math.h> - -/* ---------------- rvu~ - simple peak&rms-vu-meter. ----------------- */ - -typedef struct _rvu_tilde -{ - t_object x_obj; - void *x_clock_metro; - t_float x_metro_time; - t_float x_sum_rms; - t_float x_old_rms; - t_float x_rcp; - t_float x_sr; - t_float x_release_time; - t_float x_c1; - int x_started; - t_float x_msi; -} t_rvu_tilde; - -t_class *rvu_tilde_class; -static void rvu_tilde_tick_metro(t_rvu_tilde *x); - -static void rvu_tilde_reset(t_rvu_tilde *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 rvu_tilde_stop(t_rvu_tilde *x) -{ - clock_unset(x->x_clock_metro); - x->x_started = 0; -} - -static void rvu_tilde_start(t_rvu_tilde *x) -{ - clock_delay(x->x_clock_metro, x->x_metro_time); - x->x_started = 1; -} - -static void rvu_tilde_float(t_rvu_tilde *x, t_floatarg f) -{ - if(f == 0.0f) - { - 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 rvu_tilde_t_release(t_rvu_tilde *x, t_floatarg release_time) -{ - if(release_time <= 5.0f) - release_time = 5.0f; - x->x_release_time = release_time; - x->x_c1 = exp(-2.0f*x->x_metro_time/x->x_release_time); -} - -static void rvu_tilde_t_metro(t_rvu_tilde *x, t_floatarg metro_time) -{ - if(metro_time <= 5.0f) - metro_time = 5.0f; - x->x_metro_time = metro_time; - x->x_c1 = exp(-2.0f*x->x_metro_time/x->x_release_time); - x->x_rcp = 1.0f/(x->x_sr*x->x_metro_time); -} - -static t_int *rvu_tilde_perform(t_int *w) -{ - t_float *in = (t_float *)(w[1]); - t_rvu_tilde *x = (t_rvu_tilde *)(w[2]); - int n = (int)(w[3]); - t_float 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 rvu_tilde_dsp(t_rvu_tilde *x, t_signal **sp) -{ - x->x_sr = 0.001*(t_float)sp[0]->s_sr; - x->x_rcp = 1.0f/(x->x_sr*x->x_metro_time); - dsp_add(rvu_tilde_perform, 3, sp[0]->s_vec, x, sp[0]->s_n); - clock_delay(x->x_clock_metro, x->x_metro_time); -} - -static void rvu_tilde_tick_metro(t_rvu_tilde *x) -{ - t_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 rvu_tilde_ff(t_rvu_tilde *x) -{ - clock_free(x->x_clock_metro); -} - -static void *rvu_tilde_new(t_floatarg metro_time, t_floatarg release_time) -{ - t_rvu_tilde *x=(t_rvu_tilde *)pd_new(rvu_tilde_class); - - if(metro_time <= 0.0f) - metro_time = 300.0f; - if(metro_time <= 5.0f) - metro_time = 5.0f; - if(release_time <= 0.0f) - release_time = 300.0f; - if(release_time <= 5.0f) - release_time = 5.0f; - x->x_metro_time = metro_time; - x->x_release_time = release_time; - x->x_c1 = exp(-2.0f*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*x->x_metro_time); - x->x_clock_metro = clock_new(x, (t_method)rvu_tilde_tick_metro); - x->x_started = 1; - outlet_new(&x->x_obj, &s_float); - x->x_msi = 0.0f; - return(x); -} - -void rvu_tilde_setup(void) -{ - rvu_tilde_class = class_new(gensym("rvu~"), (t_newmethod)rvu_tilde_new, - (t_method)rvu_tilde_ff, sizeof(t_rvu_tilde), 0, - A_DEFFLOAT, A_DEFFLOAT, 0); - CLASS_MAINSIGNALIN(rvu_tilde_class, t_rvu_tilde, x_msi); - class_addmethod(rvu_tilde_class, (t_method)rvu_tilde_dsp, gensym("dsp"), 0); - class_addfloat(rvu_tilde_class, rvu_tilde_float); - class_addmethod(rvu_tilde_class, (t_method)rvu_tilde_reset, gensym("reset"), 0); - class_addmethod(rvu_tilde_class, (t_method)rvu_tilde_start, gensym("start"), 0); - class_addmethod(rvu_tilde_class, (t_method)rvu_tilde_stop, gensym("stop"), 0); - class_addmethod(rvu_tilde_class, (t_method)rvu_tilde_t_release, gensym("t_release"), A_FLOAT, 0); - class_addmethod(rvu_tilde_class, (t_method)rvu_tilde_t_metro, gensym("t_metro"), A_FLOAT, 0); - class_sethelpsymbol(rvu_tilde_class, gensym("iemhelp/help-rvu~")); -} |