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// Copyright (c) 1999-2009 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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// Declaration for FileBufferManager class which facilitates the aynchronous compression and
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// decompression of data streams.
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//
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//
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#ifndef __EZFILEBUFFERMANAGER_H__
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#define __EZFILEBUFFERMANAGER_H__
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#include <e32base.h>
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#include <f32file.h>
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#include <ezbufman.h>
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/**
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Concrete class to manage the input and output buffers for compression and de-compression
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@publishedAll
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@released
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*/
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class CEZFileBufferManager : public CBase, public MEZBufferManager
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{
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public:
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enum { EBadInitialization = 1 };
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public:
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~CEZFileBufferManager();
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IMPORT_C static CEZFileBufferManager* NewLC(RFile &aInput, RFile &aOutput, TInt aBufferSize = 0x8000);
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IMPORT_C static CEZFileBufferManager* NewL(RFile &aInput, RFile &aOutput, TInt aBufferSize = 0x8000);
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void InitializeL(CEZZStream &aZStream);
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void NeedInputL(CEZZStream &aZStream);
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void NeedOutputL(CEZZStream &aZStream);
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void FinalizeL(CEZZStream &aZStream);
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protected:
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void ConstructL(TInt aBufferSize);
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CEZFileBufferManager(RFile &aInput, RFile &aOutput);
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protected:
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RFile &iInputFile;
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RFile &iOutputFile;
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TInt iBufferSize;
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TUint8* iInputBuffer;
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TUint8* iOutputBuffer;
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TPtr8 iInputDescriptor; // always points to start of the input Buffer
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TPtr8 iOutputDescriptor; // always points to start of the output Buffer
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};
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#endif
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