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authorTim Blechmann <timblech@users.sourceforge.net>2004-07-14 16:21:44 +0000
committerIOhannes m zmölnig <zmoelnig@iem.at>2015-10-14 15:11:54 +0200
commitd0ae3caca5828675335d3b19ab5dd987e7369b23 (patch)
treeffb89eb98dc91b1c1b471d2c221f18dafbfb48a6 /sc4pd/source/Dust.cpp
parente0775c6066f90ece58bf84326ab7180cb6c3d539 (diff)
This commit was generated by cvs2svn to compensate for changes in r1857,
which included commits to RCS files with non-trunk default branches. svn path=/trunk/externals/tb/; revision=1858
Diffstat (limited to 'sc4pd/source/Dust.cpp')
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diff --git a/sc4pd/source/Dust.cpp b/sc4pd/source/Dust.cpp
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+/* sc4pd:
+ Dust, Dust~
+
+ Copyright (c) 2004 Tim Blechmann.
+
+ This code is derived from:
+ SuperCollider real time audio synthesis system
+ Copyright (c) 2002 James McCartney. All rights reserved.
+ http://www.audiosynth.com
+
+
+ This program is free software; you can redistribute it and/or
+ modify it under the terms of the GNU General Public License
+ as published by the Free Software Foundation; either version 2
+ of the License, or (at your option) any later version.
+
+ This program is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ GNU General Public License for more details.
+
+ You should have received a copy of the GNU General Public License
+ along with this program; if not, write to the Free Software
+ Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
+
+ Based on:
+ PureData by Miller Puckette and others.
+ http://www.crca.ucsd.edu/~msp/software.html
+ FLEXT by Thomas Grill
+ http://www.parasitaere-kapazitaeten.net/ext
+ SuperCollider by James McCartney
+ http://www.audiosynth.com
+
+ Coded while listening to: Assif Tsahar & Tatsuya Nakatani: Come Sunday
+*/
+
+#include <flext.h>
+#include "SC_PlugIn.h"
+#include "support.hpp"
+
+#if !defined(FLEXT_VERSION) || (FLEXT_VERSION < 406)
+#error You need at least FLEXT version 0.4.6
+#endif
+
+/* ------------------------ Dust~ -------------------------------------*/
+
+class Dust_ar:
+ public flext_dsp
+{
+ FLEXT_HEADER(Dust_ar,flext_dsp);
+
+public:
+ Dust_ar(int argc, t_atom *argv);
+
+protected:
+ virtual void m_signal(int n, t_sample *const *in, t_sample *const *out);
+ virtual void m_dsp (int n,t_signalvec const * insigs,
+ t_signalvec const * outsigs);
+
+ void m_set(float f)
+ {
+ m_density = f;
+ m_thresh = m_density/Samplerate();
+ m_scale = m_thresh > 0.f ? 1.f / m_thresh : 0.f;
+ }
+
+private:
+ FLEXT_CALLBACK_F(m_set);
+ float m_density, m_thresh, m_scale;
+ RGen rgen;
+
+};
+
+FLEXT_LIB_DSP_V("Dust~",Dust_ar);
+
+Dust_ar::Dust_ar(int argc, t_atom *argv)
+{
+ FLEXT_ADDMETHOD_(0,"set",m_set);
+
+ //parse arguments
+ AtomList Args(argc,argv);
+ m_density=sc_getfloatarg(Args,0);
+
+ rgen.init(0); //set seed to 0
+
+ AddOutSignal();
+}
+
+void Dust_ar::m_dsp(int n,t_signalvec const * insigs,
+ t_signalvec const * outsigs)
+{
+ m_thresh = m_density/Samplerate();
+ m_scale = m_thresh > 0.f ? 1.f / m_thresh : 0.f;
+}
+
+void Dust_ar::m_signal(int n, t_sample *const *in,
+ t_sample *const *out)
+{
+ t_sample *nout = *out;
+
+ RGET;
+ float thresh = m_thresh;
+ float scale = m_scale;
+
+ for (int i = 0; i!= n;++i)
+ {
+ float z = frand(s1,s2,s3);
+ if (z < thresh)
+ (*(nout)++) = z * scale;
+ else
+ (*(nout)++) = 0.f;
+ }
+
+ RPUT;
+}
+
+
+/* ------------------------ Dust ---------------------------------------*/
+
+class Dust_kr:
+ public flext_base
+{
+ FLEXT_HEADER(Dust_kr,flext_base);
+
+public:
+ Dust_kr(int argc, t_atom *argv);
+
+protected:
+ void m_set(float f);
+ Timer Dust_timer;
+ void m_doit();
+
+private:
+ float m_density, m_scale;
+ float mtbt; //medium time between trigger
+ RGen rgen;
+ FLEXT_CALLBACK_1(m_set,float);
+ FLEXT_CALLBACK_T(m_doit);
+};
+
+FLEXT_LIB_V("Dust",Dust_kr);
+
+Dust_kr::Dust_kr(int argc, t_atom *argv)
+ : Dust_timer(false)
+{
+ FLEXT_ADDMETHOD(0,m_set);
+
+ //parse arguments
+ AtomList Args(argc,argv);
+ m_density=sc_getfloatarg(Args,0);
+
+ rgen.init(0); //set seed to 0
+ AddOutFloat();
+
+ FLEXT_ADDTIMER(Dust_timer,m_doit);
+
+ m_set(m_density);
+}
+
+void Dust_kr::m_set(float f)
+{
+ Dust_timer.Reset();
+
+ if(f==0)
+ {
+ return;
+ }
+ m_density = f;
+ mtbt = 1/f*1000;
+
+ Dust_timer.Delay(mtbt * 0.002 * rgen.frand());
+}
+
+void Dust_kr::m_doit()
+{
+ ToOutFloat(0,rgen.frand());
+
+ Dust_timer.Delay(mtbt * 0.002 * rgen.frand());
+}