From e1bdd67199e389a5ba7eb03ecff171058c37a467 Mon Sep 17 00:00:00 2001
From: Thomas Grill <xovo@users.sourceforge.net>
Date: Thu, 23 Jan 2003 08:53:05 +0000
Subject:  ""

svn path=/trunk/; revision=357
---
 externals/grill/fftease/src/pvoc~.cpp | 128 ++++++++++++++++++++++++++++++++++
 1 file changed, 128 insertions(+)
 create mode 100644 externals/grill/fftease/src/pvoc~.cpp

(limited to 'externals/grill/fftease/src/pvoc~.cpp')

diff --git a/externals/grill/fftease/src/pvoc~.cpp b/externals/grill/fftease/src/pvoc~.cpp
new file mode 100644
index 00000000..d17cc576
--- /dev/null
+++ b/externals/grill/fftease/src/pvoc~.cpp
@@ -0,0 +1,128 @@
+/*
+
+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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