diff options
author | IOhannes m zmölnig <zmoelnig@users.sourceforge.net> | 2005-06-02 18:25:00 +0000 |
---|---|---|
committer | IOhannes m zmölnig <zmoelnig@users.sourceforge.net> | 2005-06-02 18:25:00 +0000 |
commit | 0c9b89b1018eb7760708ee5b080cd96846861328 (patch) | |
tree | f43a2b20292bba90931fe84e67aca8fb0013a984 /src/iemlib1/sigrvu.c | |
parent | d56ec9d039c904e9230137254ff2fe281320eed9 (diff) |
updated to release-1.16
svn path=/trunk/externals/iemlib/; revision=3102
Diffstat (limited to 'src/iemlib1/sigrvu.c')
-rw-r--r-- | src/iemlib1/sigrvu.c | 374 |
1 files changed, 187 insertions, 187 deletions
diff --git a/src/iemlib1/sigrvu.c b/src/iemlib1/sigrvu.c index fac370e..213d3f7 100644 --- a/src/iemlib1/sigrvu.c +++ b/src/iemlib1/sigrvu.c @@ -1,187 +1,187 @@ -/* 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> - -/* ---------------- 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~")); -} +/* 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>
+
+/* ---------------- 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~"));
+}
|