// Copyright (c) 1997-2009 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 __ImageConvResolvrUtils_h

#define __ImageConvResolvrUtils_h

#include <e32base.h>

#include "ImageConversion.h"

const TInt KIclPluginFrameworkVersionZero = 0;		// no flags

const TInt KIclPluginFrameworkVersionOne = 1;		// with flags

const TInt KIclPluginFrameworkVersionTwo = 2;		// with flags

const TInt KIclPluginFrameworkVersionMax = 2;		// max "legal" version

const TInt KIndexForVersion = 0; // index in opaque data for the version

const TInt KIndexForFlags = 1; // index for flags in opaque data

class COpaqueDataParse; // declared here

NONSHARABLE_CLASS( COpaqueDataParse ): public CBase

	{

public:

	static COpaqueDataParse* NewL(const TDesC8& aOpaqueData);

	static COpaqueDataParse* NewLC(const TDesC8& aOpaqueData);

	~COpaqueDataParse();

	TBool OnlyUidsAvail() const;

	TBool IsSubCodec() const;

    TBool IsOpenNeededToRecognize() const;

	TBool IsOpenAgainstSuffix() const;

	TBool IsRecognizeAgainstSuffix() const;	

	void EnsureExtnsReadL();

	void EnsureMIMETypesReadL();

	void EnsureBinaryPropertiesReadL();

	TInt BinaryPropertiesCount() const;

	TInt ExtnsCount() const;

	TInt MIMETypesCount() const;

	void GetBinaryPropertiesArrayL(RUidDataArray& aBinaryPropertiesArray) const;

	const TDesC8& Extn (TInt aIndex) const;

	const TDesC8& MIMEType (TInt aIndex) const;

	TInt Version() const;

	TInt Flags() const;

	TUid ImageTypeUid() const;

	TUid ImageSubTypeUid() const;

	TUid PluginClassUid() const;

	TBool CompareUids(COpaqueDataParse* aParse) const;

	TBool CompareUids(TUid aType, TUid aSubType = KNullUid) const;

	static TBool CompareMIMETypes(const TDesC8& aMimeType1, const TDesC8& aMimeType2);

	static TBool CompareFileSuffixL(const TDesC& aFileSuffix1, const TDesC8& aFileSuffix2);

	TBool CheckRequiredUids(const RUidDataArray& aRequiredUids);

	TBool CheckOptionsUids(const RUidDataArray& aOptionsUids);

	TBool IsDefaultCodec() const;

	TBool SupportsExtensionsL(TUint aRequiredExtensions);

protected:

	COpaqueDataParse(const TDesC8& aOpaqueData);

	void ConstructL();

	void ReadVersion();

	void ReadFlags();

	void ReadUids();

private:

	enum TProcessState

		{

		EVersionProcessed,

		EFlagsProcessed,

		EUidsProcessed,		

		EExtnsProcessed,

		EMIMETypesProcessed,

		EBinPropertiesProcessed

		};

	enum TPluginFlags

		{

		ESubCodec               = 0x00000001,

		EOpenNeededToRecognize  = 0x00000002,

		EOpenAgainstSuffix		= 0x00000004,

		ERecognizeAgainstSuffix	= 0x00000008

		};

	const TDesC8& iOpaqueData;

	TProcessState iState;

	TInt iVersion;

	TInt iFlags;

	TUid iImageTypeUid;

	TUid iImageSubTypeUid;

	TUid iPluginClassUid;

	TInt iExtnCount;

	TInt iLenOfFlags;				// len of flag field (0 or 2)

	TInt iLenOfUids;				// len of UIDs field

	TInt iStartOfUids;				// index for uids in opaque data	

	TInt iStartOfNumberOfExtns;		// index in Opaque data for the number of extensions

	TInt iStartOfMimeTypes;

	TInt iStartOfNumberOfBinProperties;	// Index in opaque data for the number of binary properties

	RArray<TPtrC8> iArray;

	RUidDataArray iBinaryPropertiesArray;

	};

// Utility class used in ImageConversionResolver.dll

// and ImageConversion.dll.

// Searches for a match of aClientString in aPluginString

// - aPluginString is normally from CImplementationInformation::DataType()

class CImageConversionResolverUtils : public CBase

	{

public:

	static TBool Match(const TDesC8& aClientString, const TDesC8& aPluginString, TInt& aBytesMatched);

	};

#include "ImageConvResolvrUtils.inl"

#endif  // __ImageConvResolvrUtils_h