sl@0: // Copyright (c) 1999-2009 Nokia Corporation and/or its subsidiary(-ies).
sl@0: // All rights reserved.
sl@0: // This component and the accompanying materials are made available
sl@0: // under the terms of "Eclipse Public License v1.0"
sl@0: // which accompanies this distribution, and is available
sl@0: // at the URL "http://www.eclipse.org/legal/epl-v10.html".
sl@0: //
sl@0: // Initial Contributors:
sl@0: // Nokia Corporation - initial contribution.
sl@0: //
sl@0: // Contributors:
sl@0: //
sl@0: // Description:
sl@0: // Declaration for FileBufferManager class which facilitates the aynchronous compression and 
sl@0: // decompression of data streams.
sl@0: // 
sl@0: //
sl@0: 
sl@0: #ifndef __EZFILEBUFFERMANAGER_H__
sl@0: #define __EZFILEBUFFERMANAGER_H__
sl@0: 
sl@0: #include <e32base.h>
sl@0: #include <f32file.h>
sl@0: 
sl@0: #include <ezbufman.h>
sl@0: 
sl@0: /**
sl@0: Concrete class to manage the input and output buffers for compression and de-compression
sl@0: 
sl@0: @publishedAll
sl@0: @released
sl@0: */
sl@0: class CEZFileBufferManager : public CBase, public MEZBufferManager
sl@0: 	{
sl@0: public:
sl@0: 
sl@0: 	enum { EBadInitialization = 1 };
sl@0: 
sl@0: public:
sl@0: 	~CEZFileBufferManager();
sl@0: 	IMPORT_C static CEZFileBufferManager* NewLC(RFile &aInput, RFile &aOutput, TInt aBufferSize = 0x8000);
sl@0: 	IMPORT_C static CEZFileBufferManager* NewL(RFile &aInput, RFile &aOutput, TInt aBufferSize = 0x8000);
sl@0: 
sl@0: 	void InitializeL(CEZZStream &aZStream);
sl@0: 	void NeedInputL(CEZZStream &aZStream);
sl@0: 	void NeedOutputL(CEZZStream &aZStream);
sl@0: 	void FinalizeL(CEZZStream &aZStream);
sl@0: 
sl@0: protected:
sl@0: 	void ConstructL(TInt aBufferSize);
sl@0: 	CEZFileBufferManager(RFile &aInput, RFile &aOutput);
sl@0: 
sl@0: protected:
sl@0: 	RFile &iInputFile;
sl@0: 	RFile &iOutputFile;
sl@0: 	TInt iBufferSize;
sl@0: 	TUint8* iInputBuffer;
sl@0: 	TUint8* iOutputBuffer;
sl@0: 	TPtr8 iInputDescriptor;  // always points to start of the input Buffer
sl@0: 	TPtr8 iOutputDescriptor; // always points to start of the output Buffer
sl@0: 	};
sl@0: 
sl@0: 
sl@0: #endif