// 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 "exiftransform.h"

#include "ImageUtils.h"

#include "ExifTagHelper.h"

#include "ExifGeneralConsts.h"

#include "ifdgeneral.h"

#include "ExifTagDescriptions.h"

/*static*/

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

	{

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

	CleanupStack::PushL(self);

	self->ConstructL(aData, aApp1Size);

	CleanupStack::Pop(self);

	return self;	

	}

CExifTransform::CExifTransform()

	{

	}

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

	{

	if(aData)

		{

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

		InitializeIfdsL(dataPtr, aApp1Size);

		}

	else

		{

	    InitializeIfdsL(ETrue, EFalse);

		}

	}

CExifTransform::~CExifTransform()

	{

	}	

void CExifTransform::SetIfd1L()

	{

	TUint offsetToFirstIfd = 0;

	CIfdGeneral* ifd0 = GetIfd(EZeroth);

	ASSERT(ifd0);

	User::LeaveIfError(ifd0->GetOffsetToFirstIfd(offsetToFirstIfd));

	if (CheckExifOffset(offsetToFirstIfd) != KErrNone)

		{

		offsetToFirstIfd = 0;

		}

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

	iIfds.AppendL(ifd1);

	CleanupStack::Pop(ifd1);

	if (offsetToFirstIfd)

		{

		SetThumbnailDataBaseL(ifd1, ETrue);

		}	

	}

TInt CExifTransform::CreateExifChunk(HBufC8*& aExifChunk)

	{

	TRAPD(err, CreateExifHeaderL(aExifChunk));

	return err;

	}

//	Creates the Exif Header proper, i.e. by pulling together all the appropriate data held in the IFD's.

void CExifTransform::CreateExifHeaderL(HBufC8*& aBuffer)

	{

	if(aBuffer != NULL)

		{

		delete aBuffer;

		aBuffer=NULL;

		}

	if(!GetJpegThumbnailData())

		{

		// we have to remove all the thumbnail data	

		RemoveThumbnailData();

		}

	aBuffer = CreateExifHeaderBaseL();

	}

void CExifTransform::CheckUpdateMandatoryTagsL()

	{

	CIfdGeneral* ifd = NULL;

	for (TInt i = 0; i < iIfds.Count(); i++)

		{

		ifd = iIfds[i];

		ifd->CheckMandatoryEntriesL();

		}

	}

TBool CExifTransform::CheckImageSizeTags()

	{

	CExifIfd* exifIfd = static_cast<CExifIfd*> (GetIfd(EExifSub));

	if (exifIfd)

		{

		return exifIfd->CheckImageSizeTags();

		}

	return EFalse;

	}

void CExifTransform::UpdateImageSizeTagsL(const TSize& aSize)

	{

	CExifIfd* exifIfd = static_cast<CExifIfd*> (GetIfd(EExifSub));

	if (exifIfd)

		{

		exifIfd->UpdateImageSizeTagsL(aSize);

		}

	}