aboutsummaryrefslogtreecommitdiff
path: root/sc4pd/source
diff options
context:
space:
mode:
authorTim Blechmann <timblech@users.sourceforge.net>2004-08-07 14:05:40 +0000
committerIOhannes m zmölnig <zmoelnig@iem.at>2015-10-14 15:11:56 +0200
commit1c90c506bb91c8ba80390d81a168e7425190e2bb (patch)
treef3c51f9473072bab1b98060d638668368be2e66f /sc4pd/source
parent89f570e5ebeab979202acf679974bafd05072692 (diff)
checkins
svn path=/trunk/externals/tb/; revision=1913
Diffstat (limited to 'sc4pd/source')
-rw-r--r--sc4pd/source/OnePole.cpp245
-rw-r--r--sc4pd/source/Resonz.cpp190
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 */