diff options
Diffstat (limited to 'sc4pd/source/Dust2.cpp')
| -rw-r--r-- | sc4pd/source/Dust2.cpp | 188 |
1 files changed, 188 insertions, 0 deletions
diff --git a/sc4pd/source/Dust2.cpp b/sc4pd/source/Dust2.cpp new file mode 100644 index 0000000..2db7981 --- /dev/null +++ b/sc4pd/source/Dust2.cpp @@ -0,0 +1,188 @@ +/* sc4pd: + Dust2, Dust2~ + + 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: Herbert Eimert: Epitaph für Aikichi Kuboyama + +*/ + +#include "sc4pd.hpp" + +/* ------------------------ Dust2~ -------------------------------------*/ + +class Dust2_ar: + public sc4pd_dsp +{ + FLEXT_HEADER(Dust2_ar,sc4pd_dsp); + +public: + Dust2_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; + } + + void m_seed(int i) + { + rgen.init(i); + } + +private: + FLEXT_CALLBACK_F(m_set); + FLEXT_CALLBACK_I(m_seed); + float m_density, m_thresh, m_scale; + RGen rgen; + +}; + +FLEXT_LIB_DSP_V("Dust2~",Dust2_ar); + +Dust2_ar::Dust2_ar(int argc, t_atom *argv) +{ + FLEXT_ADDMETHOD_(0,"set",m_set); + FLEXT_ADDMETHOD_(0,"seed",m_seed); + + //parse arguments + AtomList Args(argc,argv); + m_density=sc_getfloatarg(Args,0); + + rgen.init(timeseed()); + + AddOutSignal(); +} + +void Dust2_ar::m_dsp(int n,t_signalvec const * insigs, + t_signalvec const * outsigs) +{ + m_thresh = m_density/Samplerate(); + m_scale = m_thresh > 0.f ? 2.f / m_thresh : 0.f; +} + +void Dust2_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 - 1.f; + else + (*(nout)++) = 0.f; + } + + RPUT; +} + + +/* ------------------------ Dust2 ---------------------------------------*/ + +class Dust2_kr: + public flext_base +{ + FLEXT_HEADER(Dust2_kr,flext_base); + +public: + Dust2_kr(int argc, t_atom *argv); + +protected: + void m_set(float f); + Timer Dust2_timer; + void m_doit(void*); + + void m_seed(int i) + { + rgen.init(i); + } + +private: + float m_density, m_scale; + float mtbt; //medium time between trigger + RGen rgen; + FLEXT_CALLBACK_1(m_set,float); + FLEXT_CALLBACK_I(m_seed); + FLEXT_CALLBACK_T(m_doit); +}; + +FLEXT_LIB_V("Dust2",Dust2_kr); + +Dust2_kr::Dust2_kr(int argc, t_atom *argv) + : Dust2_timer(false) +{ + FLEXT_ADDMETHOD(0,m_set); + FLEXT_ADDMETHOD_(0,"seed",m_seed); + + //parse arguments + AtomList Args(argc,argv); + m_density=sc_getfloatarg(Args,0); + + rgen.init(timeseed()); + AddOutFloat(); + + FLEXT_ADDTIMER(Dust2_timer,m_doit); + + m_set(m_density); +} + +void Dust2_kr::m_set(float f) +{ + Dust2_timer.Reset(); + + if(f==0) + { + return; + } + m_density = f; + mtbt = 1/f*1000; + + Dust2_timer.Delay(mtbt * 0.002 * rgen.frand()); +} + +void Dust2_kr::m_doit(void*) +{ + ToOutFloat(0,2*rgen.frand() - 1 ); + + Dust2_timer.Delay(mtbt * 0.002 * rgen.frand()); +} |