1 // Copyright (c) 1999-2009 Nokia Corporation and/or its subsidiary(-ies).

     2 // All rights reserved.

     3 // This component and the accompanying materials are made available

     4 // under the terms of "Eclipse Public License v1.0"

     5 // which accompanies this distribution, and is available

     6 // at the URL "http://www.eclipse.org/legal/epl-v10.html".

     7 //

     8 // Initial Contributors:

     9 // Nokia Corporation - initial contribution.

    10 //

    11 // Contributors:

    12 //

    13 // Description:

    14 // EZLib: FILEBUFFER.H

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

    16 // decompression of data streams.

    17 // 

    18 //

    19 

    20 #ifndef __EZLIB_EZFILEBUFFERMANAGER_H__

    21 #define __EZLIB_EZFILEBUFFERMANAGER_H__

    22 

    23 #include <e32base.h>

    24 #include <f32file.h>

    25 

    26 #include "OldEZBufman.h"

    27 

    28 /**

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

    30 

    31 @publishedAll

    32 @released

    33 */

    34 namespace TOLDEZLIB

    35 {

    36 	

    37 class CEZFileBufferManager : public CBase, public MEZBufferManager

    38 	{

    39 public:

    40 

    41 	enum { EBadInitialization = 1 };

    42 

    43 public:

    44 	~CEZFileBufferManager();

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

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

    47 

    48 	void InitializeL(CEZZStream &aZStream);

    49 	void NeedInputL(CEZZStream &aZStream);

    50 	void NeedOutputL(CEZZStream &aZStream);

    51 	void FinalizeL(CEZZStream &aZStream);

    52 

    53 protected:

    54 	void ConstructL(TInt aBufferSize);

    55 	CEZFileBufferManager(RFile &aInput, RFile &aOutput);

    56 

    57 protected:

    58 	RFile &iInputFile;

    59 	RFile &iOutputFile;

    60 	TInt iBufferSize;

    61 	TUint8* iInputBuffer;

    62 	TUint8* iOutputBuffer;

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

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

    65 	};

    66 

    67 } // namespace TOLDEZLIB

    68 #endif