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/* sc4pd
LinExp~, LinExp
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: The Ex & Tom Cora - And The Weathermen Shrug
Their Shoulders
*/
#include "sc4pd.hpp"
/* ------------------------ LinExp~ -----------------------------*/
class LinExp_ar
:public sc4pd_dsp
{
FLEXT_HEADER(LinExp_ar,sc4pd_dsp);
public:
LinExp_ar(int argc,t_atom * argv);
protected:
virtual void m_signal(int n, t_sample *const *in, t_sample *const *out);
void m_set_srclo(float f)
{
m_srclo = f;
m_reset();
}
void m_set_srchi(float f)
{
m_srchi = f;
m_reset();
}
void m_set_dstlo(float f)
{
m_dstlo = f;
m_reset();
}
void m_set_dsthi(float f)
{
m_dsthi = f;
m_reset();
}
void m_reset()
{
m_dstratio = m_dsthi/m_dstlo;
m_rsrcrange = 1. / (m_srchi - m_srclo);
m_rrminuslo = m_rsrcrange * -m_srclo;
}
private:
FLEXT_CALLBACK_F(m_set_srclo);
FLEXT_CALLBACK_F(m_set_srchi);
FLEXT_CALLBACK_F(m_set_dstlo);
FLEXT_CALLBACK_F(m_set_dsthi);
float m_dstratio, m_rsrcrange, m_rrminuslo, m_dstlo;
float m_srclo, m_srchi, m_dsthi; //we will be able to reset the values
};
FLEXT_LIB_DSP_V("LinExp~",LinExp_ar);
LinExp_ar::LinExp_ar(int argc,t_atom * argv)
{
FLEXT_ADDMETHOD_(0,"srclo",m_set_srclo);
FLEXT_ADDMETHOD_(0,"srchi",m_set_srchi);
FLEXT_ADDMETHOD_(0,"dstlo",m_set_dstlo);
FLEXT_ADDMETHOD_(0,"dsthi",m_set_dsthi);
AtomList Args(argc,argv);
if (Args.Count() != 4)
post("4 arguments are required");
else
{
m_srclo = sc_getfloatarg(Args,0);
m_srchi = sc_getfloatarg(Args,1);
m_dstlo = sc_getfloatarg(Args,2);
m_dsthi = sc_getfloatarg(Args,3);
m_reset();
AddOutSignal();
}
}
void LinExp_ar::m_signal(int n, t_sample *const *in,
t_sample *const *out)
{
t_sample *nout = *out;
t_sample *nin = *in;
float dstlo = m_dstlo;
float dstratio = m_dstratio;
float rsrcrange = m_rsrcrange;
float rrminuslo = m_rrminuslo;
for (int i = 0; i!= n;++i)
{
ZXP(nout) = dstlo * pow(dstratio, ZXP(nin) * rsrcrange + rrminuslo);
}
}
/* ------------------------ LinExp ------------------------------*/
class LinExp_kr
:public flext_base
{
FLEXT_HEADER(LinExp_kr,flext_base);
public:
LinExp_kr(int argc,t_atom * argv);
protected:
void m_perform(float f);
void m_set_srclo(float f)
{
m_srclo = f;
m_reset();
}
void m_set_srchi(float f)
{
m_srchi = f;
m_reset();
}
void m_set_dstlo(float f)
{
m_dstlo = f;
m_reset();
}
void m_set_dsthi(float f)
{
m_dsthi = f;
m_reset();
}
void m_reset()
{
m_dstratio = m_dsthi/m_dstlo;
m_rsrcrange = 1. / (m_srchi - m_srclo);
m_rrminuslo = m_rsrcrange * -m_srclo;
}
private:
FLEXT_CALLBACK_F(m_set_srclo);
FLEXT_CALLBACK_F(m_set_srchi);
FLEXT_CALLBACK_F(m_set_dstlo);
FLEXT_CALLBACK_F(m_set_dsthi);
float m_dstratio, m_rsrcrange, m_rrminuslo, m_dstlo;
float m_srclo, m_srchi, m_dsthi; //we will be able to reset the values
FLEXT_CALLBACK_F(m_perform);
};
FLEXT_LIB_V("LinExp",LinExp_kr);
LinExp_kr::LinExp_kr(int argc,t_atom * argv)
{
FLEXT_ADDMETHOD(0,m_perform);
FLEXT_ADDMETHOD_(0,"srclo",m_set_srclo);
FLEXT_ADDMETHOD_(0,"srchi",m_set_srchi);
FLEXT_ADDMETHOD_(0,"dstlo",m_set_dstlo);
FLEXT_ADDMETHOD_(0,"dsthi",m_set_dsthi);
AtomList Args(argc,argv);
if (Args.Count() != 4)
post("4 arguments are required");
else
{
m_srclo = sc_getfloatarg(Args,0);
m_srchi = sc_getfloatarg(Args,1);
m_dstlo = sc_getfloatarg(Args,2);
m_dsthi = sc_getfloatarg(Args,3);
m_reset();
AddInFloat();
AddOutFloat();
}
}
void LinExp_kr::m_perform(float f)
{
ToOutFloat(0,m_dstlo * pow(m_dstratio, f * m_rsrcrange + m_rrminuslo));
}
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