Update of /cvsroot/pure-data/externals/sc4pd/source In directory sc8-pr-cvs1.sourceforge.net:/tmp/cvs-serv20371/source

Added Files: OneZero.cpp Log Message:

--- NEW FILE: OneZero.cpp --- /* sc4pd OneZero, OneZero~

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: Goh Lee Kwang: Internal Pleasures

*/

#include "sc4pd.hpp"

/* ------------------------ OneZero~ -------------------------------*/

class OneZero_ar: public sc4pd_dsp { FLEXT_HEADER(OneZero_ar,sc4pd_dsp);

public: OneZero_ar(int argc, t_atom *argv);

protected: virtual void m_signal(int n, t_sample *const *in, t_sample *const *out);

void m_set(float f) { n_b1=f; changed = true; }

private: float m_b1, m_x1; float n_b1; bool changed;

FLEXT_CALLBACK_F(m_set); };

FLEXT_LIB_DSP_V("OneZero~",OneZero_ar);

OneZero_ar::OneZero_ar(int argc, t_atom *argv) { FLEXT_ADDMETHOD_(0,"coef",m_set);

//parse arguments AtomList Args(argc,argv);

m_b1 = sc_getfloatarg(Args,0);

AddOutSignal();

m_x1 = 0.f; }

void OneZero_ar::m_signal(int n, t_sample *const *in, t_sample *const *out) { t_sample *nin = *in; t_sample *nout = *out;

float b1 = m_b1; float x1 = m_x1;

if (changed) { m_b1=n_b1; float b1_slope = CALCSLOPE(m_b1, b1); if (b1 >= 0.f && m_b1 >= 0) { for (int i = 0; i!= n;++i) { float x0 = ZXP(nin); ZXP(nout) = x0 + b1 * (x1 - x0); x1 = x0; b1 += b1_slope; } } else if (b1 <= 0.f && m_b1 <= 0) { for (int i = 0; i!= n;++i) { float x0 = ZXP(nin); ZXP(nout) = x0 + b1 * (x1 + x0); x1 = x0; b1 += b1_slope; } } else { for (int i = 0; i!= n;++i) { float x0 = ZXP(nin); ZXP(nout) = (1.f - fabs(b1)) * x0 + b1 * x1; x1 = x0; b1 += b1_slope; } } changed = false; } else { if (b1 >= 0.f) { for (int i = 0; i!= n;++i) { float x0 = ZXP(nin); ZXP(nout) = x0 + b1 * (x1 - x0); x1 = x0; } } else { for (int i = 0; i!= n;++i) { float x0 = ZXP(nin); ZXP(nout) = x0 + b1 * (x1 + x0); x1 = x0; } } } m_x1 = x1; }

/* ------------------------ OneZero ---------------------------------*/

class OneZero_kr: public flext_base { FLEXT_HEADER(OneZero_kr,flext_base);

public: OneZero_kr(int argc, t_atom *argv);

protected: void m_perform(float f);

void m_set(float f) { m_b1=f; }

private: float m_b1, m_x1;

FLEXT_CALLBACK_F(m_set); FLEXT_CALLBACK_F(m_perform); };

FLEXT_LIB_V("OneZero",OneZero_kr);

OneZero_kr::OneZero_kr(int argc, t_atom *argv) { FLEXT_ADDMETHOD(0,m_perform); FLEXT_ADDMETHOD_(0,"set",m_set);

AddOutFloat();

//parse arguments AtomList Args(argc,argv);

m_b1 = sc_getfloatarg(Args,0);

m_x1=0; }

void OneZero_kr::m_perform(float f) { ToOutFloat(0,((1-abs(m_b1))*f)+m_b1*m_x1); m_x1=f; }