From 0d2a4d810fdc7ecbe67de784d4eb901cd5699c38 Mon Sep 17 00:00:00 2001 From: Tim Blechmann Date: Sun, 1 Aug 2004 20:51:11 +0000 Subject: some more ugens svn path=/trunk/externals/tb/; revision=1902 --- sc4pd/source/Decay.cpp | 218 +++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 218 insertions(+) create mode 100644 sc4pd/source/Decay.cpp (limited to 'sc4pd/source/Decay.cpp') diff --git a/sc4pd/source/Decay.cpp b/sc4pd/source/Decay.cpp new file mode 100644 index 0000000..95bc22e --- /dev/null +++ b/sc4pd/source/Decay.cpp @@ -0,0 +1,218 @@ +/* sc4pd + Decay~, Decay + + 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: AMM: AMMMusic 1966 + +*/ + +#include +#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 + +/* ------------------------ Decay~ -----------------------------*/ + +class Decay_ar + :public flext_dsp +{ + FLEXT_HEADER(Decay_ar,flext_dsp); + +public: + Decay_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(float f); + +private: + FLEXT_CALLBACK_F(m_set); + float m_b1; //leak + float m_y1; //z-1 + float decayTime; +}; + +FLEXT_LIB_DSP_V("Decay~",Decay_ar); + +Decay_ar::Decay_ar(int argc,t_atom * argv) +{ + FLEXT_ADDMETHOD_(0,"decayTime",m_set); + + AtomList Args(argc,argv); + + m_b1 = sc_getfloatarg(Args,0); + + AddOutSignal(); + + m_y1 = 0.f; +} + +void Decay_ar::m_signal(int n, t_sample *const *in, + t_sample *const *out) +{ + t_sample *nout = *out; + t_sample *nin = *in; + + float b1 = m_b1; + float y1 = m_y1; + + if (b1 == m_b1) + { + if (b1 == 1.f) + { + for (int i = 0; i!= n;++i) + { + float y0 = (*(nin)++); + (*(nout)++) = y1 = y0 + y1; + } + + } + else if (b1 == 0.f) + { + for (int i = 0; i!= n;++i) + { + float y0 = (*(nin)++); + (*(nout)++) = y1 = y0; + } + } + else + { + for (int i = 0; i!= n;++i) + { + float y0 = (*(nin)++); + (*(nout)++) = y1 = y0 + b1 * y1; + } + } + } + else + { + float b1_slope = CALCSLOPE(m_b1, b1); + if (b1 >= 0.f && m_b1 >= 0) + { + for (int i = 0; i!= n;++i) + { + float y0 = (*(nin)++); + (*(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 = (*(nin)++); + (*(nout)++) = y1 = y0 + b1 * (y1 + y0); + b1 += b1_slope; + } + } + else + { + for (int i = 0; i!= n;++i) + { + float y0 = (*(nin)++); + (*(nout)++) = y1 = (1.f - fabs(b1)) * y0 + b1 * y1; + b1 += b1_slope; + } + } + } + m_y1 = zapgremlins(y1); +} + +void Decay_ar::m_set(float f) +{ + decayTime = f; + m_b1= 0.f ? 0.f : exp(log001 / (decayTime * Samplerate())); +} + +void Decay_ar::m_dsp(int n, t_sample *const *in, t_sample *const *out) +{ + m_b1= 0.f ? 0.f : exp(log001 / (decayTime * Samplerate())); +} + +/* todo: does it make sense to implement a message-based Decay? + Probably not... */ + + +/* ------------------------ Decay ------------------------------*/ + +// class Decay_kr +// :public flext_base +// { +// FLEXT_HEADER(Decay_kr,flext_base); + +// public: +// Decay_kr(int argc,t_atom * argv); + +// protected: +// void m_set(float f); +// void m_perform(float f); + +// private: +// float m_b1; //leak +// float m_y1; //z-1 + +// FLEXT_CALLBACK_F(m_set); +// FLEXT_CALLBACK_F(m_perform); +// }; + +// FLEXT_LIB_V("Decay",Decay_kr); + +// Decay_kr::Decay_kr(int argc,t_atom * argv) +// { +// AtomList Args(argc,argv); + +// m_b1 = sc_getfloatarg(Args,0); +// m_y1 = 0.f; + + +// AddInFloat(); +// AddOutFloat(); + +// FLEXT_ADDMETHOD(0,m_perform); +// FLEXT_ADDMETHOD_(0,"leak",m_set); +// } + +// void Decay_kr::m_perform(float f) +// { +// m_y1 = f + m_y1 * m_b1; +// ToOutFloat(0,m_y1); +// } + +// void Decay_kr::m_set(float f) +// { +// m_b1=f; +// } -- cgit v1.2.1 From 5e1268fb9920b248ee377797b130605f669c6dee Mon Sep 17 00:00:00 2001 From: Tim Blechmann Date: Mon, 2 Aug 2004 19:18:22 +0000 Subject: main header file svn path=/trunk/externals/tb/; revision=1903 --- sc4pd/source/Decay.cpp | 9 +-------- 1 file changed, 1 insertion(+), 8 deletions(-) (limited to 'sc4pd/source/Decay.cpp') diff --git a/sc4pd/source/Decay.cpp b/sc4pd/source/Decay.cpp index 95bc22e..38112aa 100644 --- a/sc4pd/source/Decay.cpp +++ b/sc4pd/source/Decay.cpp @@ -35,14 +35,7 @@ */ -#include -#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 +#include "sc4pd.hpp" /* ------------------------ Decay~ -----------------------------*/ -- cgit v1.2.1 From 1bf32780fe1281eda6deb51f661f2f234a16fd1f Mon Sep 17 00:00:00 2001 From: Tim Blechmann Date: Mon, 2 Aug 2004 20:13:59 +0000 Subject: *** empty log message *** svn path=/trunk/externals/tb/; revision=1904 --- sc4pd/source/Decay.cpp | 7 ++++--- 1 file changed, 4 insertions(+), 3 deletions(-) (limited to 'sc4pd/source/Decay.cpp') diff --git a/sc4pd/source/Decay.cpp b/sc4pd/source/Decay.cpp index 38112aa..467611c 100644 --- a/sc4pd/source/Decay.cpp +++ b/sc4pd/source/Decay.cpp @@ -37,6 +37,7 @@ #include "sc4pd.hpp" +/* todo: linear interpolation is broken */ /* ------------------------ Decay~ -----------------------------*/ class Decay_ar @@ -67,7 +68,7 @@ Decay_ar::Decay_ar(int argc,t_atom * argv) AtomList Args(argc,argv); - m_b1 = sc_getfloatarg(Args,0); + decayTime = sc_getfloatarg(Args,0); AddOutSignal(); @@ -148,12 +149,12 @@ void Decay_ar::m_signal(int n, t_sample *const *in, void Decay_ar::m_set(float f) { decayTime = f; - m_b1= 0.f ? 0.f : exp(log001 / (decayTime * Samplerate())); + m_b1= f == 0.f ? 0.f : exp(log001 / (decayTime * Samplerate())); } void Decay_ar::m_dsp(int n, t_sample *const *in, t_sample *const *out) { - m_b1= 0.f ? 0.f : exp(log001 / (decayTime * Samplerate())); + m_b1= decayTime == 0.f ? 0.f : exp(log001 / (decayTime * Samplerate())); } /* todo: does it make sense to implement a message-based Decay? -- cgit v1.2.1 From 89f570e5ebeab979202acf679974bafd05072692 Mon Sep 17 00:00:00 2001 From: Tim Blechmann Date: Sat, 7 Aug 2004 14:01:31 +0000 Subject: sc4pd_dsp class and other changes svn path=/trunk/externals/tb/; revision=1912 --- sc4pd/source/Decay.cpp | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) (limited to 'sc4pd/source/Decay.cpp') diff --git a/sc4pd/source/Decay.cpp b/sc4pd/source/Decay.cpp index 467611c..c11a7a8 100644 --- a/sc4pd/source/Decay.cpp +++ b/sc4pd/source/Decay.cpp @@ -41,9 +41,9 @@ /* ------------------------ Decay~ -----------------------------*/ class Decay_ar - :public flext_dsp + :public sc4pd_dsp { - FLEXT_HEADER(Decay_ar,flext_dsp); + FLEXT_HEADER(Decay_ar,sc4pd_dsp); public: Decay_ar(int argc,t_atom * argv); -- cgit v1.2.1