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/*
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
*/
#ifndef _SC_Unit_
#define _SC_Unit_
#include "SC_Types.h"
typedef void (*UnitCtorFunc)(struct Unit* inUnit);
typedef void (*UnitDtorFunc)(struct Unit* inUnit);
typedef void (*UnitCalcFunc)(struct Unit *inThing, int inNumSamples);
struct Unit
{
struct World *mWorld;
struct UnitDef *mUnitDef;
struct Graph *mParent;
uint16 mNumInputs, mNumOutputs;
int16 mCalcRate;
int16 mSpecialIndex; // used by unary and binary ops
int16 mParentIndex;
int16 mDone;
struct Wire **mInput, **mOutput;
struct Rate *mRate;
struct SC_Dimension *mDimension;
float **mInBuf, **mOutBuf;
UnitCalcFunc mCalcFunc;
int mBufLength;
};
typedef struct Unit Unit;
enum {
kUnitDef_CantAliasInputsToOutputs = 1
};
// easy macros, the unit variable must be named 'unit'.
#ifndef SC_WIN32
// These return float* pointers to input and output buffers.
#define IN(index) (unit->mInBuf[index])
#define OUT(index) (unit->mOutBuf[index])
// These return a float value. Used for control rate inputs and outputs.
#define IN0(index) (IN(index)[0])
#define OUT0(index) (OUT(index)[0])
#else
// Win32 headers (included by C std library headers) define IN and OUT macros
// for their own purposes. To avoid problems we don't define IN and OUT here
// but define SC_IN and SC_OUT instead. Source files that use IN and OUT need
// to include definitions of IN, and OUT referencing SC_IN and SC_OUT after
// all headers have been included.
#define SC_IN(index) (unit->mInBuf[index])
#define SC_OUT(index) (unit->mOutBuf[index])
#define IN0(index) (SC_IN(index)[0])
#define OUT0(index) (SC_OUT(index)[0])
#endif
// get the rate of the input.
#define INRATE(index) (unit->mInput[index]->mCalcRate)
// set the calculation function
#define SETCALC(func) (unit->mCalcFunc = (UnitCalcFunc)&func)
// calculate a slope for control rate interpolation to audio rate.
#define CALCSLOPE(next,prev) ((next - prev) * unit->mRate->mSlopeFactor)
// get useful values
#define SAMPLERATE (unit->mRate->mSampleRate)
#define SAMPLEDUR (unit->mRate->mSampleDur)
#define BUFLENGTH (unit->mBufLength)
#define BUFRATE (unit->mRate->mBufRate)
#define BUFDUR (unit->mRate->mBufDuration)
typedef void (*UnitCmdFunc)(struct Unit *unit, struct sc_msg_iter *args);
typedef void (*PlugInCmdFunc)(World *inWorld, void* inUserData, struct sc_msg_iter *args, void *replyAddr);
#endif
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