// 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:

//

#include <f32file.h>

#include "ExifTagHelper.h"

#include "exifdecoder.h"

#include "ImageUtils.h"

#include "ExifTagDescriptions.h"

// Setters (not supported - this is a decoder)

TInt CExifDecoder::SetParam8(TUint /*aTag*/, TUint /*aIfd*/, HBufC8* /*aParam*/)

	{

	return KErrNotSupported;

	}

TInt CExifDecoder::SetParam16(TUint /*aTag*/, TUint /*aIfd*/, HBufC16* /*aParam*/)

	{

	return KErrNotSupported;	

	}

TInt CExifDecoder::SetIntegerParam(TUint /*aTag*/, TUint /*aIfd*/, TInt /*aParam*/)

	{

	return KErrNotSupported;

	}

TInt CExifDecoder::SetShortParam(TUint /*aTag*/, TUint /*aIfd*/, TUint16 /*aParam*/)

	{

	return KErrNotSupported;

	}

TInt CExifDecoder::SetRationalParam(TUint /*aTag*/, TUint /*aIfd*/, TInt /*aNumerator*/, TInt /*aDenominator*/)

	{

	return KErrNotSupported;

	}

TInt CExifDecoder::SetIntegerArrayParam(TUint /*aTag*/, TUint /*aIfd*/, CArrayFix<TInt>& /*aParam*/)

	{

	return KErrNotSupported;

	}

TInt CExifDecoder::SetShortArrayParam(TUint /*aTag*/, TUint /*aIfd*/, CArrayFix<TUint16>& /*aParam*/)

	{

	return KErrNotSupported;

	}

TInt CExifDecoder::SetRationalArrayParam(TUint /*aTag*/, TUint /*aIfd*/, CArrayFix<TRational>& /*aParam*/)

	{

	return KErrNotSupported;

	}

/*static*/

CExifDecoder* CExifDecoder::NewL(TUint aApp1Size, const TUint8* aData)

	{

	CExifDecoder* self = new (ELeave) CExifDecoder();

	CleanupStack::PushL(self);

	self->ConstructL(aData, aApp1Size);

	CleanupStack::Pop(self);

	return self;	

	}

CExifDecoder::CExifDecoder()

	{

	}

void CExifDecoder::ConstructL(const TUint8* aData, TUint aApp1Size)

	{

	// use const_cast since the shared implementation beneath is also used

	// for the encoder and transform, and hence cannot be const

	TUint8* dataPtr = const_cast<TUint8*>(aData);

	InitializeIfdsL(dataPtr, aApp1Size);

	}

CExifDecoder::~CExifDecoder()

	{

	}

void CExifDecoder::SetIfd1L()

	{

	TUint offsetToFirstIfd = 0;

	CIfdGeneral* ifd0 = GetIfd(EZeroth);

	ASSERT(ifd0);

	if (ifd0->GetOffsetToFirstIfd(offsetToFirstIfd) == KErrNone)

		{

		if ((offsetToFirstIfd != 0) && (CheckExifOffset(offsetToFirstIfd) == KErrNone))

			{

			CIfd1* ifd1 = CIfd1::NewLC(offsetToFirstIfd, iBase, iIntel, iExifDataLength);

			iIfds.AppendL(ifd1);

			CleanupStack::Pop(ifd1);

			SetThumbnailDataBaseL(ifd1, EFalse);	

			}		

		}

	}