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authorIOhannes m zmölnig <zmoelnig@iem.at>2015-10-14 15:14:38 +0200
committerIOhannes m zmölnig <zmoelnig@iem.at>2015-10-14 15:14:38 +0200
commit28b7e464fd119b8c848753a1f41070422c463c41 (patch)
tree07449abdf85d8f1fd4068839b974242b429720ca /sc4pd/source/sc4pd.hpp
parent90c6018a9401e38859f733b3521c919e042322b7 (diff)
parent6932ee2d22511226378218992b0005cb01eb235e (diff)
- abstractions/tb - externals/tb
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+/* sc4pd:
+ support functions
+
+ 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: Morton Feldman: For John Cage
+
+*/
+
+#ifndef _SC4PD_HPP
+
+#include <flext.h>
+
+#if !defined(FLEXT_VERSION) || (FLEXT_VERSION < 406)
+#error You need at least FLEXT version 0.4.6
+#endif
+
+#include "SC_PlugIn.h"
+#include "support.hpp"
+
+/* this macro has to be redefined to work with flext */
+
+// calculate a slope for control rate interpolation to audio rate.
+//#define CALCSLOPE(next,prev) ((next - prev) * unit->mRate->mSlopeFactor)
+#undef CALCSLOPE
+#define CALCSLOPE(next,prev) ((next - prev) * 1/ Blocksize())
+
+
+
+//#define SAMPLERATE (unit->mRate->mSampleRate)
+#undef SAMPLERATE
+#define SAMPLERATE Samplerate()
+
+//#define BUFLENGTH (unit->mBufLength)
+#undef BUFLENGTH
+#define BUFLENGTH Blocksize()
+
+/* to make sure the behaviour is consistent: */
+
+#undef ZXP
+#define ZXP(z) (*(z)++)
+
+
+
+class sc4pd_dsp
+ : public flext_dsp
+{
+ FLEXT_HEADER(sc4pd_dsp,flext_dsp);
+
+
+/* some initialisation functions, adapted from SC_Rate.cpp*/
+
+ inline float sc_sampledur()
+ {
+ return 1 / Samplerate();
+ }
+
+ inline float sc_radianspersample()
+ {
+ return twopi / Samplerate();
+ }
+
+ inline float sc_bufduration()
+ {
+ return Blocksize() / Samplerate();
+ }
+
+ inline float sc_bufrate()
+ {
+ return 1 / sc_bufduration();
+ }
+
+ inline float sc_slopefactor()
+ {
+ return 1 / Blocksize();
+ }
+
+ inline int sc_filterloops()
+ {
+ return Blocksize() / 3;
+ }
+
+ inline int sc_filterremain()
+ {
+ return Blocksize() % 3;
+ }
+
+ inline float sc_filterslope()
+ {
+ float f = sc_filterloops();
+ if (f == 0)
+ return 0;
+ else
+ return 1. / f;
+ }
+
+};
+
+
+#define _SC4PD_HPP
+#endif