// Copyright (c) 2004-2009 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:

//

#ifndef EXIFENCODER_H

#define EXIFENCODER_H

#include <e32base.h>

#include "ifdgeneral.h"

#include <iclexif.h>

#include "ExifGeneralConsts.h"

#include "exifreaderwriter.h"

// CExifEncoder - provides specialisation of CExifReaderWriter for use within the 

// Jpeg Exif Encoder

class CExifEncoder : public CExifReaderWriter

	{

public:

	static CExifEncoder* NewL(TBool aEncodeThumbnail=ETrue);

	~CExifEncoder();

	// Functions derived from CExifReaderWriter.

	// (Getters not used - this is an encoder).

	TInt GetParam8(TUint aTag, TUint aIfd, HBufC8*& aParam) const;

	TInt GetParam16(TUint aTag, TUint aIfd, HBufC16*& aParam) const;	

	TInt GetIntegerParam(TUint aTag, TUint aIfd, TInt& aParam) const;

	TInt GetRationalParam(TUint aTag, TUint aIfd, TInt& aNumerator, TInt& aDenominator) const;	

	TInt GetShortParam(TUint aTag, TUint aIfd, TUint16& aParam) const;

	TInt GetIntegerArrayParam(TUint aTag, TUint aIfd, CArrayFix<TInt>& aParam) const;

	TInt GetShortArrayParam(TUint aTag, TUint aIfd, CArrayFix<TUint16>& aParam) const;

	TInt GetRationalArrayParam(TUint aTag, TUint aIfd, CArrayFix<TRational>& aParam) const;

	//Functions not derived from MExifMetaData.	

	// Creates the Exif Header, and returns pointer to the block of data.

	TPtrC8 CreateExifHeaderL();

	void SetEnableThumbnailL(TBool aEnable);

	// Returns an offset to the JPEGInterchangeFormatLength tag value/offset field.

	TInt ThumbnailLengthOffset();

	TInt ExifLengthOffset();

private: // Functions

	CExifEncoder(TBool aEncodeThumbnail);

	void ConstructL();

	virtual void SetIfd1L();

private: // Member variables.

	HBufC8* iExifData;

	};

#endif // EXIFENCODER_H