checkins

svn path=/trunk/externals/tb/; revision=1913

2 files changed, 435 insertions, 0 deletions

diff --git a/sc4pd/source/OnePole.cpp b/sc4pd/source/OnePole.cpp
new file mode 100644
index 0000000..310bf54
--- /dev/null
+++ b/sc4pd/source/OnePole.cpp
@@ -0,0 +1,245 @@
+/* sc4pd 
+   OnePole, OnePole~
+
+   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: 
+   
+*/
+
+#include "sc4pd.hpp"
+
+/* ------------------------ OnePole~ -------------------------------*/
+
+class OnePole_ar:
+    public sc4pd_dsp
+{
+    FLEXT_HEADER(OnePole_ar,sc4pd_dsp);
+    
+public:
+    OnePole_ar(int argc, t_atom *argv);
+    
+protected:
+    virtual void m_signal(int n, t_sample *const *in, t_sample *const *out)
+    {
+	m_signal_fun(n,in,out);
+    }
+
+    void m_set(float f)
+    {
+	n_b1=f;
+	changed = true;
+    }
+    
+    void m_ar()
+    {
+	SETSIGFUN(m_signal_fun,SIGFUN(m_signal_ar));
+    }
+
+    void m_kr()
+    {
+	SETSIGFUN(m_signal_fun,SIGFUN(m_signal_kr));
+    }
+    
+private:
+    float m_b1, m_y1;
+    float n_b1;
+    bool changed;
+    
+    DEFSIGCALL (m_signal_fun);
+    DEFSIGFUN (m_signal_ar);
+    DEFSIGFUN (m_signal_kr);
+    
+    FLEXT_CALLBACK_F(m_set);
+    FLEXT_CALLBACK(m_ar);
+    FLEXT_CALLBACK(m_kr);
+};
+
+FLEXT_LIB_DSP_V("OnePole~",OnePole_ar);
+
+OnePole_ar::OnePole_ar(int argc, t_atom *argv)
+{
+    FLEXT_ADDMETHOD_(0,"coef",m_set);
+    FLEXT_ADDMETHOD_(0,"ar",m_ar);
+    FLEXT_ADDMETHOD_(0,"kr",m_kr);
+
+    //parse arguments
+    AtomList Args(argc,argv);
+    
+    m_b1 = sc_getfloatarg(Args,0);
+    
+    if(sc_ar(Args))
+    {
+	SETSIGFUN(m_signal_fun,SIGFUN(m_signal_ar));
+	AddInSignal();
+	AddInSignal();
+    }
+    else // if not given, use control rate
+	SETSIGFUN(m_signal_fun,SIGFUN(m_signal_kr)); 
+    
+    AddOutSignal();
+    
+    m_y1 = 0.f;
+}    
+
+void OnePole_ar::m_signal_ar(int n, t_sample *const *in, 
+	 		   t_sample *const *out)
+{
+    t_sample *nin = *in;
+    t_sample *nout = *out;
+    float *b1p = *(in+1);
+    
+    float y1 = m_y1;
+
+    for (int i = 0; i!= n;++i)
+    {
+	float y0 = ZXP(nin); 
+	float b1 = ZXP(b1p); 
+	ZXP(nout) = y1 = y0 + b1 * (y1 - y0);
+    }
+    m_y1 = zapgremlins(y1);
+}
+
+
+void OnePole_ar::m_signal_kr(int n, t_sample *const *in, 
+			   t_sample *const *out)
+{
+    t_sample *nin = *in;
+    t_sample *nout = *out;
+    
+    float b1 = m_b1;
+    float y1 = m_y1;
+
+    if (changed)
+    {
+	m_b1=n_b1;
+	float b1_slope = CALCSLOPE(m_b1, b1);
+	if (b1 >= 0.f && m_b1 >= 0) 
+	{
+	    for (int i = 0; i!= n;++i)
+	    {
+		float y0 = ZXP(nin); 
+		ZXP(nout) = y1 = y0 + b1 * (y1 - y0);
+		b1 += b1_slope;
+	    }
+	} 
+	else if (b1 <= 0.f && m_b1 <= 0) 
+	{
+	    for (int i = 0; i!= n;++i)
+	    {
+		float y0 = ZXP(nin); 
+		ZXP(nout) = y1 = y0 + b1 * (y1 + y0);
+		b1 += b1_slope;
+	    }
+	}
+	else
+	{
+	    for (int i = 0; i!= n;++i)
+	    {
+		float y0 = ZXP(nin); 
+		ZXP(nout) = y1 = (1.f - fabs(b1)) * y0 + b1 * y1;
+		b1 += b1_slope;
+	    }
+	}
+	changed = false;
+    }
+    else
+    {
+	if (b1 >= 0.f) 
+	{
+	    for (int i = 0; i!= n;++i)
+	    {
+		float y0 = ZXP(nin); 
+		ZXP(nout) = y1 = y0 + b1 * (y1 - y0);
+	    }
+	}
+	else
+	{
+	    for (int i = 0; i!= n;++i)
+	    {
+		float y0 = ZXP(nin); 
+		ZXP(nout) = y1 = y0 + b1 * (y1 + y0);
+	    }
+	}
+
+    }
+    m_y1 = zapgremlins(y1);
+}
+
+/* ------------------------ OnePole ---------------------------------*/
+
+
+class OnePole_kr:
+    public flext_base
+{
+    FLEXT_HEADER(OnePole_kr,flext_base);
+
+public:
+    OnePole_kr(int argc, t_atom *argv);
+    
+protected:
+    void m_perform(float f);
+
+    void m_set(float f)
+    {
+	m_b1=f;
+    }
+
+private:
+    float m_b1, m_y1;
+
+    FLEXT_CALLBACK_F(m_set);
+    FLEXT_CALLBACK_F(m_perform);
+};
+
+
+FLEXT_LIB_V("OnePole",OnePole_kr);
+
+OnePole_kr::OnePole_kr(int argc, t_atom *argv)
+{
+    FLEXT_ADDMETHOD(0,m_perform);
+    FLEXT_ADDMETHOD_(0,"set",m_set);
+    
+    AddOutFloat();
+
+    //parse arguments
+    AtomList Args(argc,argv);
+
+    m_b1 = sc_getfloatarg(Args,0);
+    
+    m_y1=0;
+}
+
+void OnePole_kr::m_perform(float f)
+{
+    m_y1= f + m_b1 * (m_y1 - f);
+    ToOutFloat(0,m_y1);
+}
diff --git a/sc4pd/source/Resonz.cpp b/sc4pd/source/Resonz.cpp
new file mode 100644
index 0000000..4561b9a
--- /dev/null
+++ b/sc4pd/source/Resonz.cpp
@@ -0,0 +1,190 @@
+/* sc4pd 
+   Resonz~, Resonz
+
+   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: MIMEO: Electric Chair And Table
+   
+*/
+
+#include "sc4pd.hpp"
+
+/* ------------------------ Resonz~ -----------------------------*/
+
+class Resonz_ar
+    :public sc4pd_dsp
+{
+    FLEXT_HEADER(Resonz_ar,sc4pd_dsp);
+
+public:
+    Resonz_ar(int argc,t_atom * argv);
+
+protected:
+    virtual void m_signal(int n, t_sample *const *in, t_sample *const *out);
+    virtual void m_dsp(int n, t_sample *const *in, t_sample *const *out);
+    
+    void m_set_freq(float f)
+    {
+	m_freq = f;
+	m_ffreq = m_freq * mRadiansPerSample;
+	changed = true;
+    }
+    void m_set_rq(float f)
+    {
+	m_rq = f;
+	changed = true;
+    }
+
+private:
+    FLEXT_CALLBACK_F(m_set_freq);
+    FLEXT_CALLBACK_F(m_set_rq);
+    float m_y1, m_y2, m_a0, m_b1, m_b2, m_freq, m_rq, m_ffreq;
+    bool changed;
+    
+    float mRadiansPerSample, mFilterSlope, mFilterLoops, mFilterRemain;
+};
+
+FLEXT_LIB_DSP_V("Resonz~",Resonz_ar);
+
+Resonz_ar::Resonz_ar(int argc,t_atom * argv)
+{
+    FLEXT_ADDMETHOD_(0,"freq",m_set_freq);
+    FLEXT_ADDMETHOD_(0,"rq",m_set_rq);
+
+    AtomList Args(argc,argv);
+    m_freq = sc_getfloatarg(Args,0);
+    m_rq = sc_getfloatarg(Args,1);
+
+    AddOutSignal();
+
+    m_a0 = 0.f;
+    m_b1 = 0.f;
+    m_b2 = 0.f;
+    m_y1 = 0.f;
+    m_y2 = 0.f;
+    changed = false;
+}
+
+void Resonz_ar::m_dsp(int n, t_sample *const *in, 
+				t_sample *const *out)
+{
+    mRadiansPerSample = sc_radianspersample();
+    mFilterSlope = sc_filterslope();
+    mFilterLoops = sc_filterloops();
+    mFilterRemain = sc_filterremain();
+    
+    m_ffreq = m_freq * mRadiansPerSample;
+}
+
+void Resonz_ar::m_signal(int n, t_sample *const *in, 
+			 t_sample *const *out)
+{
+    t_sample *nout = *out;
+    t_sample *nin = *in;
+    
+    float y0;
+    float y1 = m_y1;
+    float y2 = m_y2;
+    float a0 = m_a0;
+    float b1 = m_b1;
+    float b2 = m_b2;
+
+    if (changed = true)
+    {
+	float B = m_ffreq * m_rq;
+	float R = 1.f - B * 0.5f;
+	float twoR = 2.f * R;
+	float R2 = R * R;
+	float cost = (twoR * cos(m_ffreq)) / (1.f + R2);
+	float b1_next = twoR * cost;
+	float b2_next = -R2;
+	float a0_next = (1.f - R2) * 0.5f;
+	float a0_slope = (a0_next - a0) * mFilterSlope;
+	float b1_slope = (b1_next - b1) * mFilterSlope;
+	float b2_slope = (b2_next - b2) * mFilterSlope;
+
+	for (int i = 0; i!= mFilterLoops;++i)
+	{
+	    y0 = ZXP(nin) + b1 * y1 + b2 * y2; 
+	    ZXP(nout) = a0 * (y0 - y2);
+	    
+	    y2 = ZXP(nin) + b1 * y0 + b2 * y1; 
+	    ZXP(nout) = a0 * (y2 - y1);
+	    
+	    y1 = ZXP(nin) + b1 * y2 + b2 * y0; 
+	    ZXP(nout) = a0 * (y1 - y0);
+	    
+	    a0 += a0_slope; 
+	    b1 += b1_slope; 
+	    b2 += b2_slope;
+	}
+
+	for (int i = 0; i!= mFilterRemain;++i)
+	{
+	    y0 = ZXP(nin) + b1 * y1 + b2 * y2; 
+	    ZXP(nout) = a0 * (y0 - y2);
+	    y2 = y1; 
+	    y1 = y0;
+	}
+
+	m_a0 = a0_next;
+	m_b1 = b1_next;
+	m_b2 = b2_next;
+	changed = false;
+    }
+    else
+    {
+	for (int i = 0; i!= mFilterLoops;++i)
+	{
+	    y0 = ZXP(nin) + b1 * y1 + b2 * y2; 
+	    ZXP(nout) = a0 * (y0 - y2);
+	    
+	    y2 = ZXP(nin) + b1 * y0 + b2 * y1; 
+	    ZXP(nout) = a0 * (y2 - y1);
+	    
+	    y1 = ZXP(nin) + b1 * y2 + b2 * y0; 
+	    ZXP(nout) = a0 * (y1 - y0);
+	}
+	
+	for (int i = 0; i!= mFilterRemain;++i)
+	{
+	    y0 = ZXP(nin) + b1 * y1 + b2 * y2; 
+	    ZXP(nout) = a0 * (y0 - y2);
+	    y2 = y1; 
+	    y1 = y0;
+	}
+    }
+    m_y1 = zapgremlins(y1);
+    m_y2 = zapgremlins(y2);
+}
+
+
+/* no control rate resonz */