// Copyright (c) 1999-2009 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:

 // Declaration for FileBufferManager class which facilitates the aynchronous compression and 

 // decompression of data streams.

 // 

 //

 #ifndef __EZFILEBUFFERMANAGER_H__

 #define __EZFILEBUFFERMANAGER_H__

 #include <e32base.h>

 #include <f32file.h>

 #include <ezbufman.h>

 /**

 Concrete class to manage the input and output buffers for compression and de-compression

 @publishedAll

 @released

 */

 class CEZFileBufferManager : public CBase, public MEZBufferManager

 	{

 public:

 	enum { EBadInitialization = 1 };

 public:

 	~CEZFileBufferManager();

 	IMPORT_C static CEZFileBufferManager* NewLC(RFile &aInput, RFile &aOutput, TInt aBufferSize = 0x8000);

 	IMPORT_C static CEZFileBufferManager* NewL(RFile &aInput, RFile &aOutput, TInt aBufferSize = 0x8000);

 	void InitializeL(CEZZStream &aZStream);

 	void NeedInputL(CEZZStream &aZStream);

 	void NeedOutputL(CEZZStream &aZStream);

 	void FinalizeL(CEZZStream &aZStream);

 protected:

 	void ConstructL(TInt aBufferSize);

 	CEZFileBufferManager(RFile &aInput, RFile &aOutput);

 protected:

 	RFile &iInputFile;

 	RFile &iOutputFile;

 	TInt iBufferSize;

 	TUint8* iInputBuffer;

 	TUint8* iOutputBuffer;

 	TPtr8 iInputDescriptor;  // always points to start of the input Buffer

 	TPtr8 iOutputDescriptor; // always points to start of the output Buffer

 	};

 #endif