/*

* Copyright (c) 2006 Nokia Corporation and/or its subsidiary(-ies).

* All rights reserved.

* This component and the accompanying materials are made available

* under the terms of "Eclipse Public License v1.0"

* which accompanies this distribution, and is available

* at the URL "http://www.eclipse.org/legal/epl-v10.html".

*

* Initial Contributors:

* Nokia Corporation - initial contribution.

*

* Contributors:

*

* Description:   

*	DCSharpening 

*		Sharpening using IMAAMI algorithm.

*

*/

#ifndef __DCSharpening_H

#define __DCSharpening_H

#include <e32std.h> // for Fundamental Types

#include <e32base.h> // for Fundamental Types

#include "DCInit.h"

//Adjust to proper signal range (10 bits)

#define ADJUST_RANGE_TO_10BITS(value) ((value) < 0) ? 0 : ((value) > 1023) ? 1023 : (value)

//Class definition

class DCSharpening : public CBase

{

public:

	//parameters

	struct DCSharpeningParams

	{

		TUint SHARP_OVER;

		TUint SHARP_DZONE;

		TReal SHARP_GAIN;

	};

	DCSharpening();

	static DCSharpening* NewL();

	static DCSharpening* NewLC();

	~DCSharpening();

	// Second Phase contructor (may leave)

	void ConstructL();

	//Process original image and store result

	void ProcessL(CFbsBitmap* aBPtr);

	//Set processing parameters

	void SetParameters(DCSharpeningParams* params);

	//Get current processing parameters

	void GetParameters(DCSharpeningParams* params);

	//Limit integer value to byte [0,255]

	static inline TUint8 Limit255(TInt i) {

		return (TUint8)(i<0?0:(i>255?255:i));

	}

private:

	//Processing parameters

	DCSharpeningParams iParameters;

	//Line Buffer and pointer

	HBufC8*	iScanLine;

	HBufC8*	iPrevScanLine;

	HBufC8*	iPrevPrevScanLine;

	HBufC8*	iNextScanLine;

	HBufC8*	iNextNextScanLine;

	//Sharpening functions from IMAAMI

	TInt Peak(TInt aA, TInt aB, TInt aC, TInt aD, TInt aE, TInt aF, TInt aG, TInt aH, TInt aO);

	TInt Median3(TInt aA, TInt aB, TInt aC);

	void findMinMax4(TInt A, TInt B, TInt C, TInt D, TInt *min, TInt *max);

	//Processing parameters for stretch

	TInt iGain;

};

#endif // ifndef __DCSharpening_H

//----IMAAMI----