diff options
Diffstat (limited to 'src/iemlib1/sigpvu.c')
-rw-r--r-- | src/iemlib1/sigpvu.c | 412 |
1 files changed, 206 insertions, 206 deletions
diff --git a/src/iemlib1/sigpvu.c b/src/iemlib1/sigpvu.c index e751c29..12d779e 100644 --- a/src/iemlib1/sigpvu.c +++ b/src/iemlib1/sigpvu.c @@ -1,206 +1,206 @@ -/* 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>
-
-/* ---------------- pvu~ - simple peak-vu-meter. ----------------- */
-
-typedef struct sigpvu
-{
- t_object x_obj;
- void *x_outlet_meter;
- void *x_outlet_over;
- void *x_clock;
- float x_cur_peak;
- float x_old_peak;
- float x_threshold_over;
- float x_c1;
- int x_metro_time;
- float x_release_time;
- int x_overflow_counter;
- int x_started;
- float x_msi;
-} t_sigpvu;
-
-t_class *sigpvu_class;
-static void sigpvu_tick(t_sigpvu *x);
-
-static void sigpvu_reset(t_sigpvu *x)
-{
- outlet_float(x->x_outlet_over, (t_float)0);
- outlet_float(x->x_outlet_meter, -199.9);
- x->x_overflow_counter = 0;
- x->x_cur_peak = 0.0f;
- x->x_old_peak = 0.0f;
- clock_delay(x->x_clock, x->x_metro_time);
-}
-
-static void sigpvu_stop(t_sigpvu *x)
-{
- clock_unset(x->x_clock);
- x->x_started = 0;
-}
-
-static void sigpvu_start(t_sigpvu *x)
-{
- clock_delay(x->x_clock, x->x_metro_time);
- x->x_started = 1;
-}
-
-static void sigpvu_float(t_sigpvu *x, t_floatarg f)
-{
- if(f == 0.0)
- {
- clock_unset(x->x_clock);
- x->x_started = 0;
- }
- else
- {
- clock_delay(x->x_clock, x->x_metro_time);
- x->x_started = 1;
- }
-}
-
-static void sigpvu_t_release(t_sigpvu *x, t_floatarg release_time)
-{
- if(release_time <= 20.0f)
- release_time = 20.0f;
- x->x_release_time = release_time;
- x->x_c1 = exp(-(float)x->x_metro_time/(float)release_time);
-}
-
-static void sigpvu_t_metro(t_sigpvu *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(-(float)metro_time/(float)x->x_release_time);
-}
-
-static void sigpvu_threshold(t_sigpvu *x, t_floatarg thresh)
-{
- x->x_threshold_over = thresh;
-}
-
-static t_int *sigpvu_perform(t_int *w)
-{
- float *in = (float *)(w[1]);
- t_sigpvu *x = (t_sigpvu *)(w[2]);
- int n = (int)(w[3]);
- float peak = x->x_cur_peak;
- float absolute;
- int i;
-
- if(x->x_started)
- {
- for(i=0; i<n; i++)
- {
- absolute = fabs(*in++);
- if(absolute > peak)
- peak = absolute;
- }
- x->x_cur_peak = peak;
- }
- return(w+4);
-}
-
-static void sigpvu_dsp(t_sigpvu *x, t_signal **sp)
-{
- dsp_add(sigpvu_perform, 3, sp[0]->s_vec, x, sp[0]->s_n);
- clock_delay(x->x_clock, x->x_metro_time);
-}
-
-static void sigpvu_tick(t_sigpvu *x)
-{
- float db;
- int i;
-
- x->x_old_peak *= x->x_c1;
- /* NAN protect */
- if(IEM_DENORMAL(x->x_old_peak))
- x->x_old_peak = 0.0f;
-
- if(x->x_cur_peak > x->x_old_peak)
- x->x_old_peak = x->x_cur_peak;
- if(x->x_old_peak <= 0.0000000001f)
- db = -199.9f;
- else if(x->x_old_peak > 1000000.0f)
- {
- db = 120.0f;
- x->x_old_peak = 1000000.0f;
- }
- else
- db = 8.6858896381f*log(x->x_old_peak);
- if(db >= x->x_threshold_over)
- {
- x->x_overflow_counter++;
- outlet_float(x->x_outlet_over, (t_float)x->x_overflow_counter);
- }
- outlet_float(x->x_outlet_meter, db);
- x->x_cur_peak = 0.0f;
- clock_delay(x->x_clock, x->x_metro_time);
-}
-
-static void *sigpvu_new(t_floatarg metro_time, t_floatarg release_time, t_floatarg threshold)
-{
- t_sigpvu *x;
- float t;
-
- x = (t_sigpvu *)pd_new(sigpvu_class);
- 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;
- if(threshold == 0.0f)
- threshold = -0.01f;
- x->x_threshold_over = threshold;
- x->x_overflow_counter = 0;
- x->x_metro_time = (int)metro_time;
- x->x_release_time = release_time;
- x->x_c1 = exp(-(float)metro_time/(float)release_time);
- x->x_cur_peak = 0.0f;
- x->x_old_peak = 0.0f;
- x->x_clock = clock_new(x, (t_method)sigpvu_tick);
- x->x_outlet_meter = outlet_new(&x->x_obj, &s_float);/* left */
- x->x_outlet_over = outlet_new(&x->x_obj, &s_float); /* right */
- x->x_started = 1;
- x->x_msi = 0;
- return(x);
-}
-
-static void sigpvu_ff(t_sigpvu *x)
-{
- clock_free(x->x_clock);
-}
-
-void sigpvu_setup(void )
-{
- sigpvu_class = class_new(gensym("pvu~"), (t_newmethod)sigpvu_new,
- (t_method)sigpvu_ff, sizeof(t_sigpvu), 0, A_DEFFLOAT, A_DEFFLOAT, A_DEFFLOAT, 0);
- CLASS_MAINSIGNALIN(sigpvu_class, t_sigpvu, x_msi);
- class_addmethod(sigpvu_class, (t_method)sigpvu_dsp, gensym("dsp"), 0);
- class_addfloat(sigpvu_class, sigpvu_float);
- class_addmethod(sigpvu_class, (t_method)sigpvu_reset, gensym("reset"), 0);
- class_addmethod(sigpvu_class, (t_method)sigpvu_start, gensym("start"), 0);
- class_addmethod(sigpvu_class, (t_method)sigpvu_stop, gensym("stop"), 0);
- class_addmethod(sigpvu_class, (t_method)sigpvu_t_release, gensym("t_release"), A_FLOAT, 0);
- class_addmethod(sigpvu_class, (t_method)sigpvu_t_metro, gensym("t_metro"), A_FLOAT, 0);
- class_addmethod(sigpvu_class, (t_method)sigpvu_threshold, gensym("threshold"), A_FLOAT, 0);
- class_sethelpsymbol(sigpvu_class, gensym("iemhelp/help-pvu~"));
-}
+/* 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> + +/* ---------------- pvu~ - simple peak-vu-meter. ----------------- */ + +typedef struct sigpvu +{ + t_object x_obj; + void *x_outlet_meter; + void *x_outlet_over; + void *x_clock; + float x_cur_peak; + float x_old_peak; + float x_threshold_over; + float x_c1; + int x_metro_time; + float x_release_time; + int x_overflow_counter; + int x_started; + float x_msi; +} t_sigpvu; + +t_class *sigpvu_class; +static void sigpvu_tick(t_sigpvu *x); + +static void sigpvu_reset(t_sigpvu *x) +{ + outlet_float(x->x_outlet_over, (t_float)0); + outlet_float(x->x_outlet_meter, -199.9); + x->x_overflow_counter = 0; + x->x_cur_peak = 0.0f; + x->x_old_peak = 0.0f; + clock_delay(x->x_clock, x->x_metro_time); +} + +static void sigpvu_stop(t_sigpvu *x) +{ + clock_unset(x->x_clock); + x->x_started = 0; +} + +static void sigpvu_start(t_sigpvu *x) +{ + clock_delay(x->x_clock, x->x_metro_time); + x->x_started = 1; +} + +static void sigpvu_float(t_sigpvu *x, t_floatarg f) +{ + if(f == 0.0) + { + clock_unset(x->x_clock); + x->x_started = 0; + } + else + { + clock_delay(x->x_clock, x->x_metro_time); + x->x_started = 1; + } +} + +static void sigpvu_t_release(t_sigpvu *x, t_floatarg release_time) +{ + if(release_time <= 20.0f) + release_time = 20.0f; + x->x_release_time = release_time; + x->x_c1 = exp(-(float)x->x_metro_time/(float)release_time); +} + +static void sigpvu_t_metro(t_sigpvu *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(-(float)metro_time/(float)x->x_release_time); +} + +static void sigpvu_threshold(t_sigpvu *x, t_floatarg thresh) +{ + x->x_threshold_over = thresh; +} + +static t_int *sigpvu_perform(t_int *w) +{ + float *in = (float *)(w[1]); + t_sigpvu *x = (t_sigpvu *)(w[2]); + int n = (int)(w[3]); + float peak = x->x_cur_peak; + float absolute; + int i; + + if(x->x_started) + { + for(i=0; i<n; i++) + { + absolute = fabs(*in++); + if(absolute > peak) + peak = absolute; + } + x->x_cur_peak = peak; + } + return(w+4); +} + +static void sigpvu_dsp(t_sigpvu *x, t_signal **sp) +{ + dsp_add(sigpvu_perform, 3, sp[0]->s_vec, x, sp[0]->s_n); + clock_delay(x->x_clock, x->x_metro_time); +} + +static void sigpvu_tick(t_sigpvu *x) +{ + float db; + int i; + + x->x_old_peak *= x->x_c1; + /* NAN protect */ + if(IEM_DENORMAL(x->x_old_peak)) + x->x_old_peak = 0.0f; + + if(x->x_cur_peak > x->x_old_peak) + x->x_old_peak = x->x_cur_peak; + if(x->x_old_peak <= 0.0000000001f) + db = -199.9f; + else if(x->x_old_peak > 1000000.0f) + { + db = 120.0f; + x->x_old_peak = 1000000.0f; + } + else + db = 8.6858896381f*log(x->x_old_peak); + if(db >= x->x_threshold_over) + { + x->x_overflow_counter++; + outlet_float(x->x_outlet_over, (t_float)x->x_overflow_counter); + } + outlet_float(x->x_outlet_meter, db); + x->x_cur_peak = 0.0f; + clock_delay(x->x_clock, x->x_metro_time); +} + +static void *sigpvu_new(t_floatarg metro_time, t_floatarg release_time, t_floatarg threshold) +{ + t_sigpvu *x; + float t; + + x = (t_sigpvu *)pd_new(sigpvu_class); + 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; + if(threshold == 0.0f) + threshold = -0.01f; + x->x_threshold_over = threshold; + x->x_overflow_counter = 0; + x->x_metro_time = (int)metro_time; + x->x_release_time = release_time; + x->x_c1 = exp(-(float)metro_time/(float)release_time); + x->x_cur_peak = 0.0f; + x->x_old_peak = 0.0f; + x->x_clock = clock_new(x, (t_method)sigpvu_tick); + x->x_outlet_meter = outlet_new(&x->x_obj, &s_float);/* left */ + x->x_outlet_over = outlet_new(&x->x_obj, &s_float); /* right */ + x->x_started = 1; + x->x_msi = 0; + return(x); +} + +static void sigpvu_ff(t_sigpvu *x) +{ + clock_free(x->x_clock); +} + +void sigpvu_setup(void ) +{ + sigpvu_class = class_new(gensym("pvu~"), (t_newmethod)sigpvu_new, + (t_method)sigpvu_ff, sizeof(t_sigpvu), 0, A_DEFFLOAT, A_DEFFLOAT, A_DEFFLOAT, 0); + CLASS_MAINSIGNALIN(sigpvu_class, t_sigpvu, x_msi); + class_addmethod(sigpvu_class, (t_method)sigpvu_dsp, gensym("dsp"), 0); + class_addfloat(sigpvu_class, sigpvu_float); + class_addmethod(sigpvu_class, (t_method)sigpvu_reset, gensym("reset"), 0); + class_addmethod(sigpvu_class, (t_method)sigpvu_start, gensym("start"), 0); + class_addmethod(sigpvu_class, (t_method)sigpvu_stop, gensym("stop"), 0); + class_addmethod(sigpvu_class, (t_method)sigpvu_t_release, gensym("t_release"), A_FLOAT, 0); + class_addmethod(sigpvu_class, (t_method)sigpvu_t_metro, gensym("t_metro"), A_FLOAT, 0); + class_addmethod(sigpvu_class, (t_method)sigpvu_threshold, gensym("threshold"), A_FLOAT, 0); + class_sethelpsymbol(sigpvu_class, gensym("iemhelp/help-pvu~")); +} |