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/*
flext tutorial - stk 2
Copyright (c) 2002-2010 Thomas Grill (gr@grrrr.org)
For information on usage and redistribution, and for a DISCLAIMER OF ALL
WARRANTIES, see the file, "license.txt," in this distribution.
-------------------------------------------------------------------------
This is an example of an external using the STK ("synthesis toolkit") library.
For STK see http://ccrma-www.stanford.edu/software/stk
STK needs C++ exceptions switched on.
The STK tutorial examples assume that a static stk library exists which contains all the
source files (except rt*.cpp) of the stk/src directory.
The library should be compiled multithreaded and with the appropriate compiler flags for
the respective platform (e.g. __OS_WINDOWS__ and __LITTLE_ENDIAN__ for Windows)
*/
#include <flstk.h>
#if !defined(FLEXT_VERSION) || (FLEXT_VERSION < 401)
#error You need at least flext version 0.4.1 with STK support
#endif
#include "PitShift.h"
using namespace stk;
class stk2:
public flext_stk
{
FLEXT_HEADER_S(stk2,flext_stk,Setup)
public:
stk2();
void m_sh1(float f) { if(inst[0]) inst[0]->setShift(f); }
void m_sh2(float f) { if(inst[1]) inst[1]->setShift(f); }
// these are obligatory!
virtual bool NewObjs(); // create STK instruments
virtual void FreeObjs(); // destroy STK instruments
virtual void ProcessObjs(int n); // do DSP processing
PitShift *inst[2];
StkFrames vec;
private:
static void Setup(t_classid c);
FLEXT_CALLBACK_F(m_sh1)
FLEXT_CALLBACK_F(m_sh2)
};
FLEXT_NEW_DSP("stk2~",stk2)
stk2::stk2()
{
AddInSignal();
AddOutSignal(2);
inst[0] = inst[1] = NULL;
}
void stk2::Setup(t_classid c)
{
FLEXT_CADDMETHOD_F(c,0,"shL",m_sh1);
FLEXT_CADDMETHOD_F(c,0,"shR",m_sh2);
}
// create STK instruments
bool stk2::NewObjs()
{
bool ok = true;
try {
// set up objects
for(int i = 0; i < 2; ++i)
inst[i] = new PitShift;
// reserve one signal vector too
vec.resize(Blocksize());
}
catch (StkError &) {
post("%s - Creation failed!",thisName());
ok = false;
}
return ok;
}
// destroy the STK instruments
void stk2::FreeObjs()
{
for(int i = 0; i < 2; ++i)
if(inst[i]) delete inst[i];
}
// this is called on every DSP block
void stk2::ProcessObjs(int n)
{
for(int i = 0; i < 2; ++i) {
Inlet(0).tick(vec);
inst[i]->tick(vec);
Outlet(i).tick(vec);
}
}
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