///////////////////////////////////////////////////////////////////////////
//
// 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 
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// * Neither name of Intel Corporation nor the names of its contributors 
// may be used to endorse or promote products derived from this software 
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// 
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///////////////////////////////////////////////////////////////////////////

#if !defined _INCLUDED_PYRAMID_H
#define _INCLUDED_PYRAMID_H

#include "LocalBuffer.h"
#include "Image.h"

class PyrGauss
{
	private:
		LocalBuffer buf;

	public:
		PyrGauss();
		~PyrGauss();

		int PyrUp(Image8u* pSrc, Image8u* pDst);
		int PyrDown(Image8u* pSrc, Image8u* pDst);

		IppiSize GetDestSizeUp(Image8u* pSrc);
		IppiSize GetDestSizeDown(Image8u* pSrc);
};

class Pyramid8u
{
	public:
		enum { MaxLevels = 32 };

		Pyramid8u();
		~Pyramid8u();
		Image8u* GetLevel(int level);
		void SetTopLevel(Image8u* pImage);

	private:
		static PyrGauss pyr_;

		Image8u* pImages[MaxLevels];
		void FreeAll_();

};


#endif