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// signal1~ - a flext tutorial external written by Frank Barknecht
//
// This is a commented port of the pan~ example from the PD-Externals-Howto to
// illustrate the usage of flext. You can get the original code at
// http://iem.kug.ac.at/pd/externals-HOWTO/
#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(sndobj1,flext_sndobj)
public:
sndobj1();
protected:
// these are obligatory!
virtual void NewObjs();
virtual void FreeObjs();
virtual void ProcessObjs();
// space for a few sndobjs
Pitch *obj1,*obj2;
float sh1,sh2;
FLEXT_ATTRVAR_F(sh1)
FLEXT_ATTRVAR_F(sh2)
};
FLEXT_NEW_DSP("sndobj1~",sndobj1)
sndobj1::sndobj1():
sh1(1),sh2(1)
{
AddInSignal(2); // audio ins
AddOutSignal(2); // audio outs
obj1 = obj2 = NULL;
FLEXT_ADDATTR_VAR1("shL",sh1);
FLEXT_ADDATTR_VAR1("shR",sh2);
}
// construct needed SndObjs
void sndobj1::NewObjs()
{
// set up objects
obj1 = new Pitch(.1f,&InObj(0),sh1,Blocksize(),Samplerate());
obj2 = new Pitch(.1f,&InObj(1),sh2,Blocksize(),Samplerate());
}
// 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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