/*

* Copyright (c) 2004-2007 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:  Static factory class for creating file instances.

*

*/

// INCLUDE FILES

#include <IHLImageFactory.h>

#include "CIHLFileImage.h"

#include "CIHLFileImageExtJpg.h"

#include <IclExtJpegApi.h>

// Private namespace for constants and functions

namespace

	{

	// First image index

	const TInt KIHLFirstImage = 0;

	const TInt KIHLNullOptions = 0;

	const TInt KMimeTypeStringLength = 255;

	_LIT( KJpgType, "image/jpeg" );

    // Helper functions

    // -----------------------------------------------------------------------------

    // OpenExtendedFileImageL

    // -----------------------------------------------------------------------------

    //

	CIHLFileImageExtJpg* OpenExtendedFileImageL( RFs& aFs, const TDesC& aFilename,

												TInt aImageIndex, const TUint32 aOptions )

		{

		CIHLFileImageExtJpg* fileImageExtJpg = NULL;

        TRAPD( err, fileImageExtJpg = CIHLFileImageExtJpg::NewL( aFs, aFilename,

                                                           aImageIndex, aOptions ) );

        if( !err )

            {

            // Hw or Sw extended decoder found; check for cropping capability

            CleanupStack::PushL( fileImageExtJpg );

            if( !( fileImageExtJpg->CapabilitiesL() & CExtJpegDecoder::ECapCropping ) )

                {

                //Decoder does not support cropping, use the old implementation

                CleanupStack::PopAndDestroy( fileImageExtJpg );

                fileImageExtJpg = NULL;

                }

            else

                {

                CleanupStack::Pop( fileImageExtJpg );

                }

            }

        return fileImageExtJpg;

		}

    // -----------------------------------------------------------------------------

    // MimeTypeIsJpgL

    // -----------------------------------------------------------------------------

    //

    TBool MimeTypeIsJpgL( RFile& aFile )

        {

        using namespace ContentAccess;

        TBuf<KMimeTypeStringLength> mime;

        CContent* content = CContent::NewL( aFile );

        CleanupStack::PushL( content );

        CData* data = content->OpenContentL( EPeek );

        CleanupStack::PushL( data );

        User::LeaveIfError( data->GetStringAttribute( EMimeType, mime ) );

        CleanupStack::PopAndDestroy( 2 ); //data, content

        if( mime.Compare( KJpgType ) == 0 ) return ETrue;

        return EFalse;

        }

	}

// ============================ STATIC FUNCTIONS ===============================

// -----------------------------------------------------------------------------

// IHLImageFactory::OpenFileImageL

// -----------------------------------------------------------------------------

//

EXPORT_C MIHLFileImage* IHLImageFactory::OpenFileImageL( RFs& aFs, const TDesC& aFilename )

	{

	RFile fileHandle;

	TInt err( fileHandle.Open( aFs, aFilename, EFileShareReadersOnly ) );

	if( err )

		{

		User::LeaveIfError( fileHandle.Open( aFs, aFilename, EFileShareAny ) );

		}

	CleanupClosePushL( fileHandle );

	if ( MimeTypeIsJpgL( fileHandle ) )

		{

		CIHLFileImageExtJpg* fileImageExtJpg = OpenExtendedFileImageL( aFs,

																	aFilename,

																	KIHLFirstImage,

																	KIHLNullOptions );

		if ( fileImageExtJpg )

			{

			CleanupStack::PopAndDestroy();	// fileHandle.Close()

			return fileImageExtJpg;

			}

		}

	CIHLFileImage* fileImage = CIHLFileImage::NewL( fileHandle, KIHLFirstImage, KIHLNullOptions );

	CleanupStack::PopAndDestroy(); // fileHandle.Close()

	return fileImage;

	}

// -----------------------------------------------------------------------------

// IHLImageFactory::OpenFileImageL

// -----------------------------------------------------------------------------

//

EXPORT_C MIHLFileImage* IHLImageFactory::OpenFileImageL( RFs& aFs, const TDesC& aFilename,

														 TInt aImageIndex )

	{

	RFile fileHandle;

	TInt err( fileHandle.Open( aFs, aFilename, EFileShareReadersOnly ) );

	if( err )

		{

		User::LeaveIfError( fileHandle.Open( aFs, aFilename, EFileShareAny ) );

		}

	CleanupClosePushL( fileHandle );

	if ( MimeTypeIsJpgL( fileHandle ) )

		{

		CIHLFileImageExtJpg* fileImageExtJpg = OpenExtendedFileImageL( aFs,

																	aFilename,

																	aImageIndex,

																	KIHLNullOptions );

		if ( fileImageExtJpg )

			{

			CleanupStack::PopAndDestroy();	// fileHandle.Close()

			return fileImageExtJpg;

			}

		}

	CIHLFileImage* fileImage = CIHLFileImage::NewL( fileHandle, aImageIndex, KIHLNullOptions );

	CleanupStack::PopAndDestroy(); // fileHandle.Close()

	return fileImage;

	}

// -----------------------------------------------------------------------------

// IHLImageFactory::OpenFileImageL

// -----------------------------------------------------------------------------

//

EXPORT_C MIHLFileImage* IHLImageFactory::OpenFileImageL( RFs& aFs, const TDesC& aFilename,

														 TInt aImageIndex, const TUint32 aOptions )

	{

	RFile fileHandle;

	TInt err( fileHandle.Open( aFs, aFilename, EFileShareReadersOnly ) );

	if( err )

		{

		User::LeaveIfError( fileHandle.Open( aFs, aFilename, EFileShareAny ) );

		}

	CleanupClosePushL( fileHandle );

	if ( MimeTypeIsJpgL( fileHandle ) )

		{

		CIHLFileImageExtJpg* fileImageExtJpg = OpenExtendedFileImageL( aFs,

																	aFilename,

																	aImageIndex,

																	aOptions );

		if ( fileImageExtJpg )

			{

			CleanupStack::PopAndDestroy();	// fileHandle.Close()

			return fileImageExtJpg;

			}

		}

	CIHLFileImage* fileImage = CIHLFileImage::NewL( fileHandle, aImageIndex, aOptions );

	CleanupStack::PopAndDestroy(); // fileHandle.Close()

	return fileImage;

	}

// -----------------------------------------------------------------------------

// IHLImageFactory::OpenFileImageL

// -----------------------------------------------------------------------------

//

EXPORT_C MIHLFileImage* IHLImageFactory::OpenFileImageL( RFile& aFile )

	{

	return CIHLFileImage::NewL( aFile, KIHLFirstImage, KIHLNullOptions );

	}

// -----------------------------------------------------------------------------

// IHLImageFactory::OpenFileImageL

// -----------------------------------------------------------------------------

//

EXPORT_C MIHLFileImage* IHLImageFactory::OpenFileImageL( RFile& aFile, TInt aImageIndex )

	{

	return CIHLFileImage::NewL( aFile, aImageIndex, KIHLNullOptions );

	}

// -----------------------------------------------------------------------------

// IHLImageFactory::OpenFileImageL

// -----------------------------------------------------------------------------

//

EXPORT_C MIHLFileImage* IHLImageFactory::OpenFileImageL( RFile& aFile, TInt aImageIndex,

														 const TUint32 aOptions )

	{

	return CIHLFileImage::NewL( aFile, aImageIndex, aOptions );

	}

// -----------------------------------------------------------------------------

// IHLImageFactory::OpenBufferedFileImageL

// -----------------------------------------------------------------------------

//

EXPORT_C MIHLFileImage* IHLImageFactory::OpenBufferedFileImageL( RFs& aFs, const TDesC8& aDataBuf )

	{

	return CIHLFileImage::NewL( aFs, aDataBuf, KIHLFirstImage, KIHLNullOptions );

	}

// -----------------------------------------------------------------------------

// IHLImageFactory::OpenBufferedFileImageL

// -----------------------------------------------------------------------------

//

EXPORT_C MIHLFileImage* IHLImageFactory::OpenBufferedFileImageL( RFs& aFs,

                                        const TDesC8& aDataBuf, TInt aImageIndex )

	{

	return CIHLFileImage::NewL( aFs, aDataBuf, aImageIndex, KIHLNullOptions );

	}

// -----------------------------------------------------------------------------

// IHLImageFactory::OpenBufferedFileImageL

// -----------------------------------------------------------------------------

//

EXPORT_C MIHLFileImage* IHLImageFactory::OpenBufferedFileImageL( RFs& aFs,

            const TDesC8& aDataBuf, TInt aImageIndex, const TUint32 aOptions )

	{

	return CIHLFileImage::NewL( aFs, aDataBuf, aImageIndex, aOptions );

	}

//  End of File