epoc32/include/ezfilebuffer.h
author William Roberts <williamr@symbian.org>
Tue, 16 Mar 2010 16:12:26 +0000
branchSymbian2
changeset 2 2fe1408b6811
parent 0 061f57f2323e
child 4 837f303aceeb
permissions -rw-r--r--
Final list of Symbian^2 public API header files
     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 the License "Symbian Foundation License v1.0" to Symbian Foundation members and "Symbian Foundation End User License Agreement v1.0" to non-members
     5 // which accompanies this distribution, and is available
     6 // at the URL "http://www.symbianfoundation.org/legal/licencesv10.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 __EZFILEBUFFERMANAGER_H__
    21 #define __EZFILEBUFFERMANAGER_H__
    22 
    23 #include <e32base.h>
    24 #include <f32file.h>
    25 
    26 #include <ezbufman.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 class CEZFileBufferManager : public CBase, public MEZBufferManager
    35 	{
    36 public:
    37 
    38 	enum { EBadInitialization = 1 };
    39 
    40 public:
    41 	~CEZFileBufferManager();
    42 	IMPORT_C static CEZFileBufferManager* NewLC(RFile &aInput, RFile &aOutput, TInt aBufferSize = 0x8000);
    43 	IMPORT_C static CEZFileBufferManager* NewL(RFile &aInput, RFile &aOutput, TInt aBufferSize = 0x8000);
    44 
    45 	void InitializeL(CEZZStream &aZStream);
    46 	void NeedInputL(CEZZStream &aZStream);
    47 	void NeedOutputL(CEZZStream &aZStream);
    48 	void FinalizeL(CEZZStream &aZStream);
    49 
    50 protected:
    51 	void ConstructL(TInt aBufferSize);
    52 	CEZFileBufferManager(RFile &aInput, RFile &aOutput);
    53 
    54 protected:
    55 	RFile &iInputFile;
    56 	RFile &iOutputFile;
    57 	TInt iBufferSize;
    58 	TUint8* iInputBuffer;
    59 	TUint8* iOutputBuffer;
    60 	TPtr8 iInputDescriptor;  // always points to start of the input Buffer
    61 	TPtr8 iOutputDescriptor; // always points to start of the output Buffer
    62 	};
    63 
    64 
    65 #endif