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/* sc4pd
MantissaMask~, MantissaMask
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: Wolfgang Mitterer: Amusie
*/
#include "sc4pd.hpp"
/* ------------------------ MantissaMask~ -----------------------------*/
class MantissaMask_ar
:public sc4pd_dsp
{
FLEXT_HEADER(MantissaMask_ar,sc4pd_dsp);
public:
MantissaMask_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);
private:
FLEXT_CALLBACK_F(m_set);
int32 mask;
};
FLEXT_LIB_DSP_V("MantissaMask~",MantissaMask_ar);
MantissaMask_ar::MantissaMask_ar(int argc,t_atom * argv)
{
FLEXT_ADDMETHOD_(0,"set",m_set);
AtomList Args(argc,argv);
int bits = sc_getfloatarg(Args,0);
AddOutSignal();
mask = -1 << (23 - bits);
}
void MantissaMask_ar::m_signal(int n, t_sample *const *in,
t_sample *const *out)
{
int32 *nout = (int32*)*out;
int32 *nin = (int32*)*in;
for (int i = 0; i!= n;++i)
{
(*(nout)++) = mask & (*(nin)++);
}
}
void MantissaMask_ar::m_set(float f)
{
int bits = (int) f;
if ( bits < 0 || bits > 23)
{
post("value doesn't make sense");
return;
}
mask = -1 << (23 - bits);
}
/* ------------------------ MantissaMask ------------------------------*/
class MantissaMask_kr
:public flext_base
{
FLEXT_HEADER(MantissaMask_kr,flext_base);
public:
MantissaMask_kr(int argc,t_atom * argv);
protected:
void m_set(float f);
void m_perform(float f);
private:
FLEXT_CALLBACK_F(m_set);
FLEXT_CALLBACK_F(m_perform);
int32 mask;
};
FLEXT_LIB_V("MantissaMask",MantissaMask_kr);
MantissaMask_kr::MantissaMask_kr(int argc,t_atom * argv)
{
AtomList Args(argc,argv);
int bits = sc_getfloatarg(Args,0);
AddInFloat();
AddOutFloat();
FLEXT_ADDMETHOD(0,m_perform);
FLEXT_ADDMETHOD_(0,"set",m_set);
mask = -1 << (23 - bits);
}
void MantissaMask_kr::m_perform(float f)
{
float g;
int32 *gp = (int32*) &g;
*(gp) = mask & *((int32*) &f);
ToOutFloat(0,g);
}
void MantissaMask_kr::m_set(float f)
{
int bits = (int) f;
if ( bits < 0 || bits > 23)
{
post("value doesn't make sense");
return;
}
mask = -1 << (23 - bits);
}
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