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/* sc4pd
Crackle, Crackle~
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: David S. Ware: Threads
*/
#include "sc4pd.hpp"
/* ------------------------ Crackle~ -------------------------------*/
class Crackle_ar:
public sc4pd_dsp
{
FLEXT_HEADER(Crackle_ar,sc4pd_dsp);
public:
Crackle_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)
{
m_paramf = f;
}
private:
FLEXT_CALLBACK_F(m_set);
float m_paramf;
float m_y1, m_y2;
};
FLEXT_LIB_DSP_V("Crackle~",Crackle_ar);
Crackle_ar::Crackle_ar(int argc, t_atom *argv)
: m_y1(0.3f),m_y2(0.f)
{
FLEXT_ADDMETHOD_(0,"parameter",m_set);
//parse arguments
AtomList Args(argc,argv);
m_paramf=sc_getfloatarg(Args,0);
if (m_paramf == 0)
m_paramf = 1;
AddOutSignal();
}
void Crackle_ar::m_signal(int n, t_sample *const *in,
t_sample *const *out)
{
t_sample *nout = *out;
float paramf = m_paramf;
float y1 = m_y1;
float y2 = m_y2;
float y0;
for (int i = 0; i!= n;++i)
{
(*(nout)++) = y0 = fabs(y1 * paramf - y2 - 0.05f);
y2 = y1;
y1 = y0;
}
m_y1=y1;
m_y2=y2;
}
/* ------------------------ Crackle ---------------------------------*/
class Crackle_kr:
public flext_base
{
FLEXT_HEADER(Crackle_kr,flext_base);
public:
Crackle_kr(int argc, t_atom *argv);
protected:
void m_perform();
void m_set(float f)
{
m_paramf = f;
}
private:
float m_paramf;
float m_y1, m_y2;
FLEXT_CALLBACK(m_perform);
FLEXT_CALLBACK_F(m_set);
};
FLEXT_LIB_V("Crackle",Crackle_kr);
Crackle_kr::Crackle_kr(int argc, t_atom *argv)
: m_y1(0.3f),m_y2(0.f)
{
FLEXT_ADDBANG(0,m_perform);
FLEXT_ADDMETHOD_(0,"parameter",m_set);
//parse arguments
AtomList Args(argc,argv);
m_paramf=sc_getfloatarg(Args,0);
if (m_paramf == 0)
m_paramf = 1;
AddOutFloat();
}
void Crackle_kr::m_perform()
{
float y0 = fabs(m_y1 * m_paramf - m_y2 - 0.05f);
m_y2 = m_y1;
m_y1 = y0;
ToOutFloat(0,y0);
}
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