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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"
class pvoc:
public fftease
{
FLEXT_HEADER_S(pvoc,fftease,setup)
public:
pvoc(I argc,const t_atom *argv);
protected:
virtual V Transform(I _N2,S *const *in);
BL _invert;
F _threshold,_multiplier;
F _thresh_dB,_mult_dB;
private:
V ms_thresh(F v) { _threshold = FromdB(_thresh_dB = v); }
V ms_mult(F v) { _multiplier = FromdB(_mult_dB = v); }
static V setup(t_classid c);
FLEXT_ATTRGET_F(_thresh_dB)
FLEXT_CALLSET_F(ms_thresh)
FLEXT_ATTRGET_F(_mult_dB)
FLEXT_CALLSET_F(ms_mult)
FLEXT_ATTRVAR_B(_invert)
};
FLEXT_LIB_DSP_V("fftease, pvoc~",pvoc)
V pvoc::setup(t_classid c)
{
FLEXT_CADDATTR_VAR(c,"thresh",_thresh_dB,ms_thresh);
FLEXT_CADDATTR_VAR(c,"mult",_mult_dB,ms_mult);
FLEXT_CADDATTR_VAR1(c,"invert",_invert);
}
pvoc::pvoc(I argc,const t_atom *argv):
fftease(4,F_STEREO|F_BALANCED|F_BITSHUFFLE|F_NOPH2),
_thresh_dB(-30),_mult_dB(-18),
_invert(false)
{
/* parse and set object's options given */
if(argc >= 1) {
if(CanbeFloat(argv[0]))
_thresh_dB = GetAFloat(argv[0]);
else
post("%s - Threshold must be a float value - set to %0f",thisName(),_thresh_dB);
}
if(argc >= 2) {
if(CanbeFloat(argv[1]))
_mult_dB = GetAFloat(argv[1]);
else
post("%s - Multiplier must be a float value - set to %0f",thisName(),_mult_dB);
}
if(argc >= 3) {
if(CanbeBool(argv[2]))
_invert = GetABool(argv[2]);
else
post("%s - Invert flag must be a boolean value - set to %i",thisName(),_invert?1:0);
}
ms_thresh(_thresh_dB);
ms_mult(_mult_dB);
AddInSignal("Messages and input signal");
AddInSignal("Reference signal");
AddOutSignal("Transformed signal");
}
V pvoc::Transform(I _N,S *const *in)
{
int freq,amp;
int chan;
// start osc bank
for ( chan = lo_bin; chan < hi_bin; chan++ ) {
freq = ( amp = ( chan << 1 ) ) + 1;
if ( _channel1[amp] < synt ){
breaker = 1;
}
if( breaker ) {
breaker = 0 ;
}
else {
_channel1[freq] *= myPInc;
finc = ( _channel1[freq] - ( f = lastfreq[chan] ) )*Iinv;
ainc = ( _channel1[amp] - ( a = lastamp[chan] ) )*Iinv;
address = index[chan];
for ( n = 0; n < I; n++ ) {
output[n] += a*table[ (int) address ];
address += f;
while ( address >= L )
address -= L;
while ( address < 0 )
address += L;
a += ainc;
f += finc;
}
lastfreq[chan] = _channel1[freq];
lastamp[chan] = _channel1[amp];
index[chan] = address;
}
}
}
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