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Diffstat (limited to 'sc4pd/source/LFDNoise0.cpp')
| -rw-r--r-- | sc4pd/source/LFDNoise0.cpp | 166 |
1 files changed, 166 insertions, 0 deletions
diff --git a/sc4pd/source/LFDNoise0.cpp b/sc4pd/source/LFDNoise0.cpp new file mode 100644 index 0000000..316b5a4 --- /dev/null +++ b/sc4pd/source/LFDNoise0.cpp @@ -0,0 +1,166 @@ +/* sc4pd + LFDNoise0~ + + 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 + + * + * DynNoiseUGens.cpp + * xSC3plugins + * + * Created by Alberto de Campo, Sekhar Ramacrishnan, Julian Rohrhuber on Sun May 30 2004. + * Copyright (c) 2004 HfbK. All rights reserved. + * + * + + 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: Phil Minton & Veryan Weston: Ways Past + +*/ + +#include "sc4pd.hpp" + + +/* ------------------------ LFDNoise0~ -------------------------------*/ + +class LFDNoise0_ar: + public sc4pd_dsp +{ + FLEXT_HEADER(LFDNoise0_ar,sc4pd_dsp); + +public: + LFDNoise0_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_sample *const *in, t_sample *const *out); + + void m_seed(int i) + { + rgen.init(i); + } + + void m_set(float f) + { + m_freq = f; + } + +private: + RGen rgen; + float m_freq; + float m_level; + float m_phase; + float m_smpdur; + + bool m_ar; + + FLEXT_CALLBACK_I(m_seed); + FLEXT_CALLBACK_F(m_set); +}; + +FLEXT_LIB_DSP_V("LFDNoise0~",LFDNoise0_ar); + +LFDNoise0_ar::LFDNoise0_ar(int argc, t_atom *argv) +{ + FLEXT_ADDMETHOD_(0,"seed",m_seed); + FLEXT_ADDMETHOD_(0,"set",m_set); + + //parse arguments + AtomList Args(argc,argv); + + m_freq = sc_getfloatarg(Args,0); + + m_phase=0.f; + m_level=0.f; + + rgen.init(timeseed()); + + m_ar = sc_ar(Args); + + if (m_ar) + AddInSignal("freqency"); + else + AddInSignal("\"set\" frequency"); + AddOutSignal(); +} + +void LFDNoise0_ar::m_dsp(int n, t_sample *const *in, + t_sample *const *out) +{ + m_smpdur = sc_sampledur(); +} + + +void LFDNoise0_ar::m_signal(int n, t_sample *const *in, + t_sample *const *out) +{ + t_sample *nout = *out; + + float level = m_level; + float phase = m_phase; + + RGET; + + if (m_ar) + { + t_sample *nin = *in; + float smpdur = m_smpdur; + for (int i = 0; i!= n; ++i) + { + phase -= ZXP(nin) * smpdur; + if (phase <= 0) + { + phase = sc_wrap(phase, 0.f, 1.f); + level = frand2(s1,s2,s3); + } + ZXP(nout) = level; + } + } + else + { + float dphase = m_smpdur * m_freq; + for (int i = 0; i!= n; ++i) + { + phase -= dphase; + if (phase <= 0) + { + phase = sc_wrap(phase, 0.f, 1.f); + level = frand2(s1,s2,s3); + } + ZXP(nout) = level; + } + } + + + m_level = level; + m_phase = phase; + + RPUT; +} + + |