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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: Phosphor
*/
#ifndef _SUPPORT_HPP
#define _SUPPORT_HPP
#include <flext.h>
#include "SC_PlugIn.h"
#if !defined(FLEXT_VERSION) || (FLEXT_VERSION < 406)
#error You need at least FLEXT version 0.4.6
#endif
/* for argument parsing */
bool sc_add (flext::AtomList& a);
float sc_getfloatarg (flext::AtomList& a,int i);
bool sc_ar(flext::AtomList& a);
bool sc_inv(flext::AtomList& a);
/* for rngs */
// macros to put rgen state in registers
#define RGET \
uint32 s1 = rgen.s1; \
uint32 s2 = rgen.s2; \
uint32 s3 = rgen.s3;
#define RPUT \
rgen.s1 = s1; \
rgen.s2 = s2; \
rgen.s3 = s3;
int32 timeseed();
/* cubic interpolation from DelayUGens.cpp */
inline float cubicinterp(float x, float y0, float y1, float y2, float y3)
{
// 4-point, 3rd-order Hermite (x-form)
float c0 = y1;
float c1 = 0.5f * (y2 - y0);
float c2 = y0 - 2.5f * y1 + 2.f * y2 - 0.5f * y3;
float c3 = 0.5f * (y3 - y0) + 1.5f * (y1 - y2);
return ((c3 * x + c2) * x + c1) * x + c0;
}
/* feedback calculation from DelayUGens.cpp */
inline float CalcFeedback(float delaytime, float decaytime)
{
if (delaytime == 0.f) {
return 0.f;
} else if (decaytime > 0.f) {
return exp(log001 * delaytime / decaytime);
} else if (decaytime < 0.f) {
return -exp(log001 * delaytime / -decaytime);
} else {
return 0.f;
}
}
/* this is adapted from thomas grill's xsample:
xsample - extended sample objects for Max/MSP and pd (pure data)
Copyright (c) 2001-2004 Thomas Grill (xovo@gmx.net)
For information on usage and redistribution, and for a DISCLAIMER OF ALL
WARRANTIES, see the file, "license.txt," in this distribution.
*/
#define SETSIGFUN(VAR,FUN) v_##VAR = FUN
#define DEFSIGFUN(NAME) void NAME(int n,t_sample *const *in,t_sample *const *out)
#define DEFSIGCALL(NAME) \
inline void NAME(int n,t_sample *const *in,t_sample *const *out) \
{ (this->*v_##NAME)(n,in,out); } \
void (thisType::*v_##NAME)(int n,t_sample *const *invecs,t_sample *const *outvecs)
#define SIGFUN(FUN) &thisType::FUN
/* from Convolution.cpp */
void init_ffts();
float* create_fftwindow(int log2n);
float* create_cosTable(int log2n);
void DoWindowing(int log2n, float * fftbuf, int bufsize);
#endif
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