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+/* 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;
+}
+
+