From d6b088044e161a27d49df537bbb6d998a8d0e50d Mon Sep 17 00:00:00 2001 From: musil Date: Sat, 9 Dec 2006 02:00:52 +0000 Subject: // class_sethelpsymbol(); changed help-*.pd to *-help.pd chanded file structure to standard 1st step remove old svn path=/trunk/externals/iemlib/; revision=6756 --- iemlib1/src/rvu~.c | 178 +++++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 178 insertions(+) create mode 100644 iemlib1/src/rvu~.c (limited to 'iemlib1/src/rvu~.c') diff --git a/iemlib1/src/rvu~.c b/iemlib1/src/rvu~.c new file mode 100644 index 0000000..2adbb52 --- /dev/null +++ b/iemlib1/src/rvu~.c @@ -0,0 +1,178 @@ +/* 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 - 2006 */ + + +#include "m_pd.h" +#include "iemlib.h" +#include + +/* ---------------- 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; ix_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~")); +} -- cgit v1.2.1