/* 

flext - C++ layer for Max/MSP and pd (pure data) externals

Copyright (c) 2001-2003 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.  

*/

#ifndef __FLSTK_H
#define __FLSTK_H

#include "flext.h"
#include <Stk.h>

class FLEXT_SHARE flext_stk:
	public flext_dsp
{ 
	FLEXT_HEADER(flext_stk,flext_dsp)
 
public:
	flext_stk();

	// these have to be overridden in child classes
	virtual bool NewObjs() { return true; }
	virtual void FreeObjs() {}
	virtual void ProcessObjs(int blocksize) {}

protected:
	virtual bool Init();
	virtual void Exit();

	//! STK object for reading from inlet buffer
	class Input:
		public Stk
	{
	public:
		Input(const t_sample *b,int vecsz);

		inline MY_FLOAT lastOut() const { return (MY_FLOAT)buf[index]; }

		inline MY_FLOAT tick() { 
	        if(++index >= vecsz) index = 0; 
	        return lastOut(); 
        }

		MY_FLOAT *tick(MY_FLOAT *vector,unsigned int vectorSize);

		inline void SetBuf(const t_sample *b) { buf = b; }

	private:
		const t_sample *buf;
		int vecsz,index;
	};

	//! STK object for writing to outlet buffer
	class Output:
		public Stk
	{
	public:
		Output(t_sample *b,int vecsz);

        inline void tick(MY_FLOAT s) { 
            buf[index] = (t_sample)s; 
            if(++index >= vecsz) index = 0; 
        }

		void tick(const MY_FLOAT *vector,unsigned int vectorSize);

		inline void SetBuf(t_sample *b) { buf = b; }

	private:
		t_sample *buf;
		int vecsz,index;
	};

	Input &Inlet(int ix) { return *inobj[ix]; }
	Output &Outlet(int ix) { return *outobj[ix]; }

private:
	virtual void m_dsp(int n,t_sample *const *in,t_sample *const *out); 
	virtual void m_signal(int n,t_sample *const *in,t_sample *const *out); 

	void ClearObjs();

	int inobjs,outobjs;
	Input **inobj;
	Output **outobj;

	float smprt;
	int blsz;
};

#endif