* Copyright (c) 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: Metadata backend engine

 *

 */

    {

    enum TValueEncodingType

        {

        EUnknownEncoding, EAsciiEncoding, EUnicodeEncoding, EBinaryEncoding,

        };

    static CMetadataUtilityItf* New(char* uri);

    CMetadataUtilityItf();

    virtual ~CMetadataUtilityItf();

    TInt ParseSource(char* uri);

    TInt OpenSource(char* uri);

    TInt CalculateNumMetadataItems(TUint*);

    char* GetKey(TInt index);

    TInt GetValueSize(TInt index);

    TInt GetValue(TInt index, char* data, TInt maxLength, TInt* outSize,

            TInt* encodingType);

    //helper function

    //extracts left part of input descriptor upto (maxLen-1) and copies content in outPtr

    //append a null terminator

    static TInt ExtractUCS2(TDesC& inDes, char* outPtr, TInt maxLen);

    CS60MetadataUtilityItf* m_pS60Util;

    CHXMetadataUtilityItf* m_pHXUtil;

    };

    {

    static CS60MetadataUtilityItf* New();

    ~CS60MetadataUtilityItf();

    TInt CalculateNumMetadataItems(TUint*);

    char* GetKey(TInt index);

    TInt GetValueSize(TInt index);

    TInt GetValue(TInt index, char* data, TInt maxLength, TInt* outSize,

            TInt* encodingType);

    TInt ParseSource(TDesC&);

    char* KeyMapping(TMetaDataFieldId);

    TInt ValueEncoding(TMetaDataFieldId);

    static bool IsSupportedExtension(char* extn);

    TInt Reset();

    CMetaDataUtility* pMetaDataUtility; //S60MetadataUtility

    TUint uNumMetadataItems;

    };

    {

    static CHXMetadataUtilityItf* New();

    ~CHXMetadataUtilityItf();

    TInt CalculateNumMetadataItems(TUint*);

    char* GetKey(TInt index);

    TInt ValueEncoding(HXMetaDataKeys::EHXMetaDataId fldID);

    TInt GetValueSize(TInt index);

    TInt GetValue(TInt index, char* data, TInt maxLength, TInt* outSize,

            TInt* encodingType);

    TInt ParseSource(TDesC&);

    char* KeyMapping(HXMetaDataKeys::EHXMetaDataId);

    TInt Reset();

    CHXMetadataUtilityItf();

    CHXMetaDataUtility *pHXMetaDataUtility;

    TUint uNumMetadataItems;

    };

extern void mmf_metadata_utility_destroy(void* context);

extern XAresult mmf_get_item_count(void* context, XAuint32* itemCount);

extern XAresult mmf_get_key_size(void* context, XAuint32 keyIndex, XAuint32* keySize);

extern XAresult mmf_get_key(void* context, XAuint32 index,XAuint32 keySize, XAMetadataInfo *pKey);

extern XAresult mmf_get_value_size(void* context, XAuint32 index, XAuint32 *pValueSize);

extern XAresult mmf_get_value(void* context, XAuint32 index, XAuint32 valueSize, XAMetadataInfo *pValue);