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//a3ffourcclookup.h
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// Copyright (c) 2007-2009 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:
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//
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/**
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@file
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@internalTechnology
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*/
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#ifndef A3FFOURCCLOOKUP_H
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#define A3FFOURCCLOOKUP_H
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//INCLUDES
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#include <ecom/ecom.h>
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#include <mmf/common/mmfutilities.h>
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#include <e32hashtab.h>
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#include <a3f/a3fbase.h>
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//CLASS DECLARATION
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/*
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CFourCCConvertor class
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This is a class used to load the format Uids and fourCC codes in to Cache Table.
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This class is used for resolution of the fourCC code corresponding to format UID and vice-versa.
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*/
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class CFourCCConvertor : public CBase
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{
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public:
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/*
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Create a Single instance of a class.If the instance is already created, It
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returns that instance.
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*/
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IMPORT_C static CFourCCConvertor* NewL();
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/*
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This method is used to find fourCC code corresponding to format Uid from cache table.
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@param TUid aFormat a unique format Uid.
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@param TFourCC &aFourCC The unique FourCC code.
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@return an error code. KErrNone if successful, otherwise one of the system wide error codes.
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*/
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IMPORT_C TInt FormatToFourCC(TUid aFormat,TFourCC &aFourCC);
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/*
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This method is used to find format Uid corresponding to fourCC Code from cache table.
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@param TFourCC &aFourCC The unique FourCC code.
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@param TUid aFormat a unique format Uid.
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@return an error code. KErrNone if successful, otherwise one of the system wide error codes.
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*/
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IMPORT_C TInt FourCCToFormat(TFourCC aFourCC, TUid &aFormat) const;
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/*
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Destructor
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*/
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virtual ~CFourCCConvertor();
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private:
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/*
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Constructor
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*/
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CFourCCConvertor();
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/*
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Second Phase Constructor
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*/
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void ConstructL();
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/*
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This method is used to initialize the cache tables. This method uses two cache
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tables. It Stores Format Uids corresponding to fourCC Codes in one cache table
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and fourCC codes corresponding to Format Uids in another cache table. In the First
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cache table,it uses format Uid as key and in the second cache table, it uses fourCC code as key.
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*/
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void LoadL();
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// DATA DECLARATION
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/* Cache Table that stores FourCC codes corresponding to Format Uids */
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RHashMap<TUint32,TUint32> *iHashFourCCToFormat;
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/* Cache Table that stores format Uids corresponding to FourCC codes */
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RHashMap<TUint32,TUint32> *iHashFormatToFourCC;
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};
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#endif // A3FFOURCCLOOKUP_H
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