From d0ae3caca5828675335d3b19ab5dd987e7369b23 Mon Sep 17 00:00:00 2001
From: Tim Blechmann <timblech@users.sourceforge.net>
Date: Wed, 14 Jul 2004 16:21:44 +0000
Subject: This commit was generated by cvs2svn to compensate for changes in
 r1857, which included commits to RCS files with non-trunk default branches.

svn path=/trunk/externals/tb/; revision=1858
---
 sc4pd/source/PinkNoise.cpp | 168 +++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 168 insertions(+)
 create mode 100644 sc4pd/source/PinkNoise.cpp

(limited to 'sc4pd/source/PinkNoise.cpp')

diff --git a/sc4pd/source/PinkNoise.cpp b/sc4pd/source/PinkNoise.cpp
new file mode 100644
index 0000000..bf6db62
--- /dev/null
+++ b/sc4pd/source/PinkNoise.cpp
@@ -0,0 +1,168 @@
+/* sc4pd 
+   PinkNoise, PinkNoise~
+
+   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: Gottfried Michael Koenig: Klangfiguren II
+   
+*/
+
+#include <flext.h>
+#include "SC_PlugIn.h"
+#include "support.hpp"
+
+
+#if !defined(FLEXT_VERSION) || (FLEXT_VERSION < 406)
+#error You need at least FLEXT version 0.4.6
+#endif
+
+
+/* ------------------------ PinkNoise~ -------------------------------*/
+
+class PinkNoise_ar:
+    public flext_dsp
+{
+    FLEXT_HEADER(PinkNoise_ar,flext_dsp);
+    
+public:
+    PinkNoise_ar(int argc, t_atom *argv);
+    
+protected:
+    virtual void m_signal(int n, t_sample *const *in, t_sample *const *out);
+    
+private:
+    uint32 m_dice[16];
+    int32 m_total;
+    RGen rgen;
+};
+
+FLEXT_LIB_DSP_V("PinkNoise~",PinkNoise_ar);
+
+PinkNoise_ar::PinkNoise_ar(int argc, t_atom *argv)
+    : m_total(0)
+{
+
+    //parse arguments
+    AtomList Args(argc,argv);
+
+    rgen.init(0); //set seed to 0
+
+    for (int i=0; i<16; ++i) 
+    {
+	uint32 newrand = rgen.trand() >> 13;
+	m_total += newrand;
+	m_dice[i] = newrand;
+    }
+
+    AddOutSignal();
+}    
+
+
+void PinkNoise_ar::m_signal(int n, t_sample *const *in, 
+			       t_sample *const *out)
+{
+    t_sample *nout = *out;
+
+    RGET;
+    uint32 total = m_total;
+    uint32 *dice = m_dice;
+
+    for (int i = 0; i!= n;++i)
+    {
+	uint32 counter = trand(s1,s2,s3); // Magnus Jonsson's suggestion.
+	uint32 newrand = counter >> 13;
+	int k = (CTZ(counter)) & 15;
+	uint32 prevrand = dice[k];
+	dice[k] = newrand;
+	total += (newrand - prevrand);
+	newrand = trand(s1,s2,s3) >> 13;
+	uint32 ifval = (total + newrand) | 0x40000000;
+	(*(nout)++) = ((*(float*)&ifval) - 3.0f);
+    }
+    RPUT;
+}
+
+
+/* ------------------------ PinkNoise ---------------------------------*/
+
+class PinkNoise_kr:
+    public flext_base
+{
+    FLEXT_HEADER(PinkNoise_kr,flext_base);
+
+public:
+    PinkNoise_kr(int argc, t_atom *argv);
+    
+protected:
+    void m_perform();
+    
+private:
+    uint32 m_dice[16];
+    int32 m_total;
+    RGen rgen;
+    FLEXT_CALLBACK(m_perform);
+};
+
+FLEXT_LIB_V("PinkNoise",PinkNoise_kr);
+
+PinkNoise_kr::PinkNoise_kr(int argc, t_atom *argv)
+    : m_total(0)
+{
+    FLEXT_ADDBANG(0,m_perform);
+
+    //parse arguments
+    AtomList Args(argc,argv);
+    
+    rgen.init(0); //set seed to 0
+
+    for (int i=0; i<16; ++i) 
+    {
+	uint32 newrand = rgen.trand() >> 13;
+	m_total += newrand;
+	m_dice[i] = newrand;
+    }
+
+    AddOutFloat();
+}
+
+void PinkNoise_kr::m_perform()
+{
+    uint32 counter = rgen.trand(); // Magnus Jonsson's suggestion.
+    uint32 newrand = counter >> 13;
+    int k = (CTZ(counter)) & 15; 
+    uint32 prevrand = m_dice[k]; 
+    m_dice[k] = newrand; 
+    m_total += (newrand - prevrand); 
+    newrand = rgen.trand() >> 13;
+    uint32 ifval = (m_total + newrand) | 0x40000000;
+    
+    ToOutFloat(0,((*(float*)&ifval) - 3.0f));
+}
-- 
cgit v1.2.1