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/*
flext tutorial - sndobj 1
Copyright (c) 2002,2003 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.
-------------------------------------------------------------------------
This is an example of an external using the SndObj library.
See http://www.may.ie/academic/music/musictec/SndObj/
The SndObj library should be compiled multithreaded.
This external features simple stereo pitch shifting.
*/
#define FLEXT_ATTRIBUTES 1
#include <flsndobj.h>
#if !defined(FLEXT_VERSION) || (FLEXT_VERSION < 401)
#error You need at least flext version 0.4.1
#endif
class sndobj1:
public flext_sndobj
{
FLEXT_HEADER_S(sndobj1,flext_sndobj,Setup)
public:
sndobj1();
// these are obligatory!
virtual bool NewObjs();
virtual void FreeObjs();
virtual void ProcessObjs();
// space for a few sndobjs
Pitch *obj1,*obj2;
float sh1,sh2;
private:
static void Setup(t_class *c);
FLEXT_ATTRVAR_F(sh1)
FLEXT_ATTRVAR_F(sh2)
};
FLEXT_NEW_DSP("sndobj1~",sndobj1)
sndobj1::sndobj1():
sh1(1),sh2(1),
obj1(NULL),obj2(NULL)
{
AddInSignal(2); // audio ins
AddOutSignal(2); // audio outs
}
void sndobj1::Setup(t_class *c)
{
FLEXT_CADDATTR_VAR1(c,"shL",sh1);
FLEXT_CADDATTR_VAR1(c,"shR",sh2);
}
// construct needed SndObjs
bool sndobj1::NewObjs()
{
// set up objects
obj1 = new Pitch(.1f,&InObj(0),sh1,Blocksize(),Samplerate());
obj2 = new Pitch(.1f,&InObj(1),sh2,Blocksize(),Samplerate());
return true;
}
// destroy the SndObjs
void sndobj1::FreeObjs()
{
if(obj1) delete obj1;
if(obj2) delete obj2;
}
// this is called on every DSP block
void sndobj1::ProcessObjs()
{
// set current pitch shift
obj1->SetPitch(sh1);
obj2->SetPitch(sh2);
// do processing here!!
obj1->DoProcess();
obj2->DoProcess();
// output
*obj1 >> OutObj(0);
*obj2 >> OutObj(1);
}
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