mmserv/metadatautility/Src/MetaDataParser3GPExt.h
author Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
Wed, 18 Aug 2010 10:17:22 +0300
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/*
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* Copyright (c) 2004 Nokia Corporation and/or its subsidiary(-ies).
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* All rights reserved.
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* This component and the accompanying materials are made available
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* under the terms of "Eclipse Public License v1.0"
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* which accompanies this distribution, and is available
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* at the URL "http://www.eclipse.org/legal/epl-v10.html".
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*
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* Initial Contributors:
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* Nokia Corporation - initial contribution.
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*
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* Contributors:
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*
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* Description:  This class implements an 3GPExt metadata parser 
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*
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*/
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#ifndef CMETADATAPARSER3GPEXT_H
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#define CMETADATAPARSER3GPEXT_H
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// INCLUDES
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#include <e32base.h>
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#include "MetaDataParserMP4.h"
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#include "MetaDataFieldContainer.h"
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#include "MetaDataField.h"
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// CONSTANTS
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// CLASS DECLARATION
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class C3GPExtParser;
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/**
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*  This class implements an 3GPExt metadata parser.
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*
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*  @lib MetaDataUtility.lib
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*  @since 3.0
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*/
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class CMetaDataParser3GPExt : public CMetaDataParserMP4
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	{
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    public:  // Constructors and destructor
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        /**
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        * Two-phased constructor.
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        * @return A pointer to a new instance of parser; NULL if parser is not created.
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        */
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        static CMetaDataParser3GPExt* NewL();
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        /**
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        * Destructor.
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        */
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        virtual ~CMetaDataParser3GPExt();
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    public: // Functions from base classes
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        /**
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        * From CMetaDataParserMP4
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        * Parses the source and if metadata is found, the metadata fields are
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        * inserted into the container.
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        * @since 3.0
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		* @param aWantedFields An array of TMetaDataFieldId's. Empty array is interpreted as all fields.
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        * @param aContainer On return, metadata found in aSource is stored here
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		* @return void
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        */
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		void ParseL( const RArray<TMetaDataFieldId>& aWantedFields, CMetaDataFieldContainer& aContainer );
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 		/**
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 		* From CMetaDataParserMP4
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		* Validates whether this is valid 3GPExt source or not.
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		* @since 3.0
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		* @return ETrue if valid, EFalse otherwise.
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		*/
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		TBool ValidateL();
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	private:
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		void ConvertAndAppendL(HBufC8** buf8, TMetaDataFieldId aFieldId);
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		/**
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        * Converts to unicode.
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		* @param aDesc Source to be converted to unicode.
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		* @param aUnicode Contains the converted unicode on return.
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        * @return KErrNone if successful, otherwise one of the system errors.
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		*/
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		TInt ConvertToUnicodeL( const TDesC8& aDesc, TDes16& aUnicode );
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        /**
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        * C++ default constructor.
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        */
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		CMetaDataParser3GPExt();
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        /**
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        * By default Symbian 2nd phase constructor is private.
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        */
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		void ConstructL();
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		/**
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        * Utility function to Append
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        */
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		void AppendL(HBufC** aBuf, TMetaDataFieldId aFieldId);
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		/**
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        * Utility function to Append
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        */
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		void AppendL(HBufC8** aBuf, TMetaDataFieldId aFieldId);
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	private:
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		// C3GPExtParser
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		C3GPExtParser *i3GPExtParser;
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    };
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#endif      // CMETADATAPARSER3GPEXT_H
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// End of File