///////////////////////////////////////////////////////////////////////////
//
// Copyright (c) 2004 Intel Corporation 
// All rights reserved. 
//
// Redistribution and use in source and binary forms, with or without 
// modification, are permitted provided that the following conditions are met: 
//
// * Redistributions of source code must retain the above copyright notice, 
// this list of conditions and the following disclaimer. 
// * Redistributions in binary form must reproduce the above copyright notice, 
// this list of conditions and the following disclaimer in the documentation 
// and/or other materials provided with the distribution. 
// * Neither name of Intel Corporation nor the names of its contributors 
// may be used to endorse or promote products derived from this software 
// without specific prior written permission.
// 
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 
// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 
// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 
// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL INTEL OR 
// CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, 
// EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, 
// PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR 
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// SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
//
///////////////////////////////////////////////////////////////////////////

#if !defined (FILTER_H)
#define FILTER_H

#include "stdafx.h"
#include "ipp.h"

#include "Image.h"

class Filter
{
private:
	int borderMode_;
	int borderVal_;

	IppiRect srcROI_;
	IppiRect dstROI_;

	int isSrcROI_, isDstROI_;

	IppiSize GetDestSize_(IppiRect srcROI) const;

protected:
//	virtual int Go_(const Image8u* pSrc, Image8u* pDst);
	virtual int Go_(const Ipp8u* pSrc, int srcStep,
					   Ipp8u* pDst, int dstStep,
					  IppiSize dstROISize, int nChannels) = 0;

public:
	Filter();
	~Filter();

	enum { NONE, VAL, REFLECT, REPEAT, WRAP };
 	void SetBorderMode(int type);
	void SetBorderVal(int val) { borderVal_ = val; }
	int GetBorderMode() const;

	void SetSrcROI(IppiRect srcROI);
	void ClearSrcROI() {isSrcROI_ = 0;}
	void SetDestROI(IppiRect dstROI);
	void ClearDestROI() {isDstROI_ = 0;}

//	void SetAutoShift

	virtual int GetXMinBorder() const;
	virtual int GetXMaxBorder() const;
	virtual int GetYMinBorder() const;
	virtual int GetYMaxBorder() const;

	virtual IppiSize GetKernelSize() const = 0;
	virtual IppiPoint GetAnchor() const = 0;

//	virtual IppiSize GetFullSrcSize(IppiSize srcSize) const;
	virtual IppiRect GetFullSrcRect(IppiRect srcRect) const;

	virtual IppiRect GetDestRect(IppiRect srcSize) const;
	virtual IppiSize GetDestSize(IppiSize srcSize) const;
	virtual IppiSize GetDestSize() const;

	virtual IppiRect GetSrcRect(IppiRect dstSize) const;
	virtual IppiSize GetSrcSize(IppiSize dstSize) const;
	virtual IppiSize GetSrcSize() const;

	int MakeBorderImage(const Image8u* pSrc, Image8u* pBorderIm,
							int borderMode) const;
//	void GetDestShift(double* xShift, double* yShift) const;

	int Go(const Image8u*pSrc, Image8u* pDst);
};

class BorderMaker : public Filter
{
	private:
		IppiSize kernelSize_;
		IppiPoint anchor_;

	protected:
		virtual int Go_(const Ipp8u* pSrc, int srcStep,
			Ipp8u* pDst, int dstStep,
			IppiSize dstROISize, int nChannels)
		{ return 0;}

	public:
		BorderMaker() {}
		BorderMaker(IppiSize kernelSize, IppiPoint anchor):
			kernelSize_(kernelSize), anchor_(anchor) {}
			
			

		IppiSize SetKernelSize(IppiSize kernelSize)
		{ kernelSize_ = kernelSize; }
		IppiPoint SetAnchor(IppiPoint anchor)
		{ anchor_ = anchor; }

		virtual IppiSize GetKernelSize() const
		{ return kernelSize_; }
		virtual IppiPoint GetAnchor() const
		{ return anchor_; }
};

#endif