""

svn path=/trunk/; revision=340

1 files changed, 79 insertions, 0 deletions

diff --git a/externals/grill/fftease/src/shapee~.cpp b/externals/grill/fftease/src/shapee~.cpp
new file mode 100644
index 00000000..2fa0268c
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+++ b/externals/grill/fftease/src/shapee~.cpp
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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 shapee:
+	public fftease
+{
+	FLEXT_HEADER(shapee,fftease)
+	
+public:
+	shapee(I argc,const t_atom *argv);
+
+protected:
+
+	virtual V Transform(I n,S *const *in);
+
+	BL _qual;
+};
+
+FLEXT_LIB_DSP_V("fftease, shapee~",shapee)
+
+
+shapee::shapee(I argc,const t_atom *argv):
+	fftease(2,F_STEREO|F_BITSHUFFLE|F_CONVERT),
+	_qual(false)
+{
+	/* 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);
+	}
+
+	if(_qual)
+		_mult = 4,_flags |= F_WINDOW;
+	else
+		_mult = 2;
+
+	AddInSignal("Messages and frequency reference signal");
+	AddInSignal("Amplitude reference signal");
+	AddOutSignal("Transformed signal");
+}
+
+
+V shapee::Transform(I _N2,S *const *in)
+{
+	// lets just shape the entire signal in groups of three 
+
+	const _N = _N2*2;
+	I i;
+	for ( i=2; i < _N+2; i += 6 ) {
+		F lowerMult = _channel1[i-2] / _channel1[i];
+		F upperMult = _channel1[i+2] / _channel1[i];
+		F newCenter = ( _channel2[i-2]+_channel2[i]+_channel2[i+2] ) / (upperMult + lowerMult + 1);
+
+		_channel2[i-2] = lowerMult * newCenter;
+		_channel2[i+2] = upperMult * newCenter;
+		_channel2[i] = newCenter; 
+	}
+
+	for ( i=0; i < _N; i+=2 ) {
+		_channel1[i] = _channel2[i];
+		if ( _channel1[i] == 0. ) 
+			_channel1[i+1] = 0.;
+		else if( _channel1[i+1] == 0. )
+			_channel1[i+1] = _channel2[i+1];
+	}
+}