Merge branchesHEADsvn2git-headmaster

- abstractions/tb
- externals/tb

1 files changed, 287 insertions, 0 deletions

diff --git a/sc4pd/source/DelayC.cpp b/sc4pd/source/DelayC.cpp
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--- /dev/null
+++ b/sc4pd/source/DelayC.cpp
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+/* sc4pd 
+   DelayC~
+
+   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: Tom Cora: Halleluja, Anyway
+   
+*/
+
+#include "sc4pd.hpp"
+#include "DelayUnit.hpp"
+
+class DelayC_ar : private DelayUnit_ar
+{
+    FLEXT_HEADER(DelayC_ar,DelayUnit_ar);
+
+    DelayC_ar (int argc, t_atom *argv);
+    ~DelayC_ar ();
+    
+protected:
+    virtual void m_signal(int n, t_sample *const *in, t_sample *const *out)
+    {
+	m_signal_fun(n,in,out);
+    }
+    
+    virtual void m_dsp(int n, t_sample *const *in, t_sample *const *out)
+    {
+	changed = false;
+	DelayUnit_Reset();
+    }
+
+    void m_set(float f)
+    {
+	m_delaytime=f;
+	changed = true;
+    }
+
+private:
+    bool changed;
+    DEFSIGCALL(m_signal_fun);
+    DEFSIGFUN(m_signal_);
+    DEFSIGFUN(m_signal_z);
+
+    FLEXT_CALLBACK_F(m_set);
+};
+
+FLEXT_LIB_DSP_V("DelayC~",DelayC_ar);
+
+DelayC_ar::DelayC_ar (int argc, t_atom *argv)
+{
+
+    FLEXT_ADDMETHOD_(0,"delaytime",m_set);
+
+
+    //parse arguments
+    AtomList Args(argc,argv);
+    
+    if (Args.Count() != 2)
+	{
+	    post("2 arguments are needed");
+	    return;
+	}
+    
+    m_delaytime = sc_getfloatarg(Args,0);
+    m_maxdelaytime = sc_getfloatarg(Args,1);
+    
+
+    SETSIGFUN(m_signal_fun,SIGFUN(m_signal_z));
+    
+    AddOutSignal();
+}
+
+DelayC_ar::~DelayC_ar ()
+{
+    DelayUnit_Dtor();
+}
+
+void DelayC_ar::m_signal_z(int n, t_sample *const *in, t_sample *const *out)
+{
+    t_sample *nin = *in;
+    t_sample *nout = *out;
+    
+    float *dlybuf = m_dlybuf;
+    long iwrphase = m_iwrphase;
+    float dsamp = m_dsamp;
+    long mask = m_mask;
+    float d0, d1, d2, d3;
+
+    if (changed)
+    {
+	float next_dsamp = CalcDelay(m_delaytime);
+	float dsamp_slope = CALCSLOPE(next_dsamp, dsamp);
+
+	for (int i = 0; i!= n;++i)
+	{
+	    dsamp += dsamp_slope;
+	    long idsamp = (long)dsamp;
+	    float frac = dsamp - idsamp;
+	    long irdphase1 = iwrphase - idsamp;
+	    long irdphase2 = irdphase1 - 1;
+	    long irdphase3 = irdphase1 - 2;
+	    long irdphase0 = irdphase1 + 1;
+	    
+	    dlybuf[iwrphase & mask] = ZXP(nin);
+	    if (irdphase0 < 0) 
+	    {
+		ZXP(nout) = 0.f;
+	    } 
+	    else
+	    {
+		if (irdphase1 < 0) 
+		{
+		    d1 = d2 = d3 = 0.f;
+		    d0 = dlybuf[irdphase0 & mask];
+		} 
+		else if (irdphase2 < 0) 
+		{
+		    d1 = d2 = d3 = 0.f;
+		    d0 = dlybuf[irdphase0 & mask];
+		    d1 = dlybuf[irdphase1 & mask];
+		} 
+		else if (irdphase3 < 0) 
+		{
+		    d3 = 0.f;
+		    d0 = dlybuf[irdphase0 & mask];
+		    d1 = dlybuf[irdphase1 & mask];
+		    d2 = dlybuf[irdphase2 & mask];
+		} 
+		else 
+		{
+		    d0 = dlybuf[irdphase0 & mask];
+		    d1 = dlybuf[irdphase1 & mask];
+		    d2 = dlybuf[irdphase2 & mask];
+		    d3 = dlybuf[irdphase3 & mask];
+		}
+		ZXP(nout) = cubicinterp(frac, d0, d1, d2, d3);
+	    }
+	    iwrphase++;
+	}
+	m_dsamp = dsamp;
+	changed = false;
+    }
+    else
+    {
+	long idsamp = (long)dsamp;
+	float frac = dsamp - idsamp;
+	for (int i = 0; i!= n;++i)
+	{
+	    long irdphase1 = iwrphase - idsamp;
+	    long irdphase2 = irdphase1 - 1;
+	    long irdphase3 = irdphase1 - 2;
+	    long irdphase0 = irdphase1 + 1;
+	    
+	    dlybuf[iwrphase & mask] = ZXP(nin);
+	    if (irdphase0 < 0) 
+	    {
+		ZXP(nout) = 0.f;
+	    } 
+	    else 
+	    {
+		if (irdphase1 < 0) 
+		{
+		    d1 = d2 = d3 = 0.f;
+		    d0 = dlybuf[irdphase0 & mask];
+		} 
+		else if (irdphase2 < 0) 
+		{
+		    d1 = d2 = d3 = 0.f;
+		    d0 = dlybuf[irdphase0 & mask];
+		    d1 = dlybuf[irdphase1 & mask];
+		} 
+		else if (irdphase3 < 0) 
+		{
+		    d3 = 0.f;
+		    d0 = dlybuf[irdphase0 & mask];
+		    d1 = dlybuf[irdphase1 & mask];
+		    d2 = dlybuf[irdphase2 & mask];
+		} 
+		else
+		{
+		    d0 = dlybuf[irdphase0 & mask];
+		    d1 = dlybuf[irdphase1 & mask];
+		    d2 = dlybuf[irdphase2 & mask];
+		    d3 = dlybuf[irdphase3 & mask];
+		}
+		ZXP(nout) = cubicinterp(frac, d0, d1, d2, d3);
+	    }
+	    iwrphase++;
+	}
+    }
+    
+    m_iwrphase = iwrphase;
+
+    m_numoutput += n;
+
+    if (m_numoutput >= m_idelaylen) 
+    {
+	SETSIGFUN(m_signal_fun,SIGFUN(m_signal_));
+    }
+}
+
+void DelayC_ar::m_signal_(int n, t_sample *const *in, t_sample *const *out)
+{
+    t_sample *nin = *in;
+    t_sample *nout = *out;
+
+    float *dlybuf = m_dlybuf;
+    long iwrphase = m_iwrphase;
+    float dsamp = m_dsamp;
+    long mask = m_mask;
+
+    if (changed)
+    {
+	float next_dsamp = CalcDelay(m_delaytime);
+	float dsamp_slope = CALCSLOPE(next_dsamp, dsamp);
+	
+	for (int i = 0; i!= n;++i)
+	{
+	    dlybuf[iwrphase & mask] = ZXP(nin);
+	    dsamp += dsamp_slope;
+	    long idsamp = (long)dsamp;
+	    float frac = dsamp - idsamp;
+	    long irdphase1 = iwrphase - idsamp;
+	    long irdphase2 = irdphase1 - 1;
+	    long irdphase3 = irdphase1 - 2;
+	    long irdphase0 = irdphase1 + 1;
+	    float d0 = dlybuf[irdphase0 & mask];
+	    float d1 = dlybuf[irdphase1 & mask];
+	    float d2 = dlybuf[irdphase2 & mask];
+	    float d3 = dlybuf[irdphase3 & mask];
+	    ZXP(nout) = cubicinterp(frac, d0, d1, d2, d3);
+	    iwrphase++;
+	}
+	m_dsamp = dsamp;
+	changed = false;
+    }
+    else
+    {
+	long idsamp = (long)dsamp;
+	float frac = dsamp - idsamp;
+	for (int i = 0; i!= n;++i)
+	{
+	    dlybuf[iwrphase & mask] = ZXP(nin);
+	    long irdphase1 = iwrphase - idsamp;
+	    long irdphase2 = irdphase1 - 1;
+	    long irdphase3 = irdphase1 - 2;
+	    long irdphase0 = irdphase1 + 1;
+	    float d0 = dlybuf[irdphase0 & mask];
+	    float d1 = dlybuf[irdphase1 & mask];
+	    float d2 = dlybuf[irdphase2 & mask];
+	    float d3 = dlybuf[irdphase3 & mask];
+	    ZXP(nout) = cubicinterp(frac, d0, d1, d2, d3);
+	    iwrphase++;
+	}
+    }
+    m_iwrphase = iwrphase;
+}
+
+/* todo: DelayC for control rate ? */