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/*
FFTease - A set of Live Spectral Processors
Originally written by Eric Lyon and Christopher Penrose for the Max/MSP platform
Copyright (c)Thomas Grill (xovo@gmx.net)
For information on usage and redistribution, and for a DISCLAIMER OF ALL
WARRANTIES, see the file, "license.txt," in this distribution.
*/
#include "main.h"
#include <stdlib.h>
class ether:
public fftease
{
FLEXT_HEADER_S(ether,fftease,setup)
public:
ether(I argc,const t_atom *argv);
protected:
virtual V Transform(I n,S *const *in);
BL _qual,_invert;
F _threshMult;
private:
static V setup(t_classid c);
FLEXT_ATTRVAR_B(_invert)
FLEXT_ATTRVAR_F(_threshMult)
};
FLEXT_LIB_DSP_V("ether~",ether)
V ether::setup(t_classid c)
{
FLEXT_CADDATTR_VAR1(c,"invert",_invert);
FLEXT_CADDATTR_VAR1(c,"index",_threshMult);
}
ether::ether(I argc,const t_atom *argv):
fftease(2,F_STEREO|F_BITSHUFFLE),
_qual(false),_invert(false),_threshMult(0)
{
/* parse and set object's options given */
if(argc >= 1) {
if(CanbeBool(argv[0]))
_qual = GetABool(argv[0]);
else
post("%s - Quality must be a boolean value - set to %0i",thisName(),_qual?1:0);
}
Mult(_qual?4:2);
if(_qual) _flags |= F_BALANCED;
AddInSignal("Messages and input signal");
AddInSignal("Reference signal");
AddOutSignal("Transformed signal");
}
V ether::Transform(I _N,S *const *)
{
const BL inv = _invert;
const F threshMult = _threshMult?_threshMult:1;
for (I i = 0; i <= _N; i += 2) {
F &1 = _channel1[i];
F &phase1 = _channel1[i+1];
F &2 = _channel2[i];
F &phase2 = _channel2[i+1];
// use simple threshold for inverse compositing
if(inv?(amp1 > amp2*threshMult):(amp1 < amp2*threshMult) ) amp1 = amp2;
if (phase1 == 0. ) phase1 = phase2;
}
}
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