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os/mm/mmlibs/mmfw/src/Plugin/StdSourceAndSink/FileAccess.h
author sl@SLION-WIN7.fritz.box
Fri, 15 Jun 2012 03:10:57 +0200
changeset 0 bde4ae8d615e
permissions -rw-r--r--
First public contribution. 
     1 // Copyright (c) 2004-2009 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 //

    15 

    16 #ifndef __FILE_ACCESS_H__

    17 #define __FILE_ACCESS_H__

    18 

    19 #include <caf/content.h>

    20 #include <caf/data.h>

    21 #include <mmf/common/mmcaf.h>

    22 

    23 // Abstract class providing generic file access

    24 class MGenericFile

    25 	{

    26 public:

    27 	virtual ~MGenericFile();

    28 

    29 	virtual TInt Seek(TSeek aSeekMode, TInt aPosition)=0;

    30 	virtual TInt Read(TDes8& aDes,TInt aLength)=0;

    31 	virtual void Read(TDes8& aDes, TInt aLength, TRequestStatus& aStatus)=0;

    32 

    33 	virtual TInt Write(const TDesC8& aDes,TInt aLength)=0;

    34 	virtual void Write(const TDesC8& aDes, TInt aLength, TRequestStatus& aStatus)=0;

    35 

    36 	virtual TInt Size(TInt& aSize)=0;

    37 	virtual TInt SetSize(TInt aSize)=0;

    38 

    39 	virtual TInt EvaluateIntent(const ContentAccess::TIntent aIntent) const = 0;

    40 	virtual TInt ExecuteIntent(const ContentAccess::TIntent aIntent) = 0;

    41 	virtual TBool IsProtected()const = 0;

    42 

    43 	// legacy file support - better to use Data()

    44 	virtual RFile& FileL()=0;

    45 

    46 	virtual TInt SetAgentProperty(ContentAccess::TAgentProperty aProperty, TInt aValue) = 0;

    47 

    48 	virtual TInt Read(TInt aPosition, TDes8& aDes, TInt aLength, TRequestStatus& aStatus) = 0;

    49 	// access to CData

    50     virtual TInt Data(ContentAccess::CData*& aData) = 0;

    51 

    52 	};

    53 

    54 // Provide RFile based file access - only now used for recording

    55 class CF32File : public CBase, public MGenericFile

    56 	{

    57 public:

    58 	static CF32File* NewL(RFs& aSession, TDesC& aPath, TUint aMode);	

    59 	static CF32File* NewL(RFile& aFile);	

    60 	void ConstructL(RFile& aFile);

    61 	void ConstructL(RFs& aSession, TDesC& aPath, TUint aMode);

    62 

    63 	virtual ~CF32File();

    64 

    65 	// from MGenericFile

    66 	virtual TInt Seek(TSeek aSeekMode, TInt aPosition);

    67 	virtual TInt Read(TDes8& aDes,TInt aLength);

    68 	virtual void Read(TDes8& aDes, TInt aLength, TRequestStatus& aStatus);

    69 	virtual TInt Write(const TDesC8& aDes,TInt aLength);

    70 	virtual void Write(const TDesC8& aDes, TInt aLength, TRequestStatus& aStatus);

    71 	virtual TInt Size(TInt& aSize);

    72 	virtual TInt SetSize(TInt aSize);

    73 	virtual TInt EvaluateIntent(const ContentAccess::TIntent aIntent) const;

    74 	virtual TInt ExecuteIntent(const ContentAccess::TIntent aIntent);

    75 	virtual TBool IsProtected() const;

    76 	virtual RFile& FileL();

    77 

    78 	virtual TInt SetAgentProperty(ContentAccess::TAgentProperty, TInt aValue);

    79 	

    80 	virtual TInt Read(TInt aPosition, TDes8& aDes, TInt aLength, TRequestStatus& aStatus);

    81 	virtual TInt Data(ContentAccess::CData*& aData);

    82 private:

    83 	CF32File();

    84 

    85 private:

    86 	RFs* iSession;	// not owned

    87 	HBufC* iFilePath;

    88 	RFile iFile;

    89 	

    90 	TBool iFileHandle;

    91 	TInt iFileSize;

    92 	};

    93 

    94 // Provides content access framework based file access

    95 class CContentFile : public CBase, public MGenericFile

    96 	{

    97 public:

    98 	static CContentFile* NewL(RFs& aSession, const TDesC& aPath, const TDesC& aUniqueId, TUint aMode, TBool aEnableUI);

    99 	void ConstructL(RFs& aSession, const TDesC& aPath, const TDesC& aUniqueId, TUint aMode, TBool aEnableUI);

   100 

   101 	static CContentFile* NewL(RFile& aFile, const TDesC& aUniqueId, TBool aEnableUI);

   102 	void ConstructL(RFile& aFile, const TDesC& aUniqueId, TBool aEnableUI);

   103 

   104 	virtual ~CContentFile();

   105 

   106 	// from MGenericFile

   107 	virtual TInt Seek(TSeek aSeekMode, TInt aPosition);

   108 	virtual TInt Read(TDes8& aDes,TInt aLength);

   109 	virtual void Read(TDes8& aDes, TInt aLength, TRequestStatus& aStatus);

   110 	virtual TInt Write(const TDesC8& aDes,TInt aLength);

   111 	virtual void Write(const TDesC8& aDes, TInt aLength, TRequestStatus& aStatus);

   112 	virtual TInt Size(TInt& aSize);

   113 	virtual TInt SetSize(TInt aSize);

   114 	virtual TInt EvaluateIntent(const ContentAccess::TIntent aIntent) const;

   115 	virtual TInt ExecuteIntent(const ContentAccess::TIntent aIntent);

   116 	virtual TBool IsProtected() const;

   117 	virtual RFile& FileL();

   118 	

   119 	virtual TInt SetAgentProperty(ContentAccess::TAgentProperty, TInt aValue);

   120 	virtual TInt Read(TInt aPosition, TDes8& aDes, TInt aLength, TRequestStatus& aStatus);

   121 	virtual TInt Data(ContentAccess::CData*& aData);

   122 

   123 

   124 private:

   125 	CContentFile();

   126 

   127 

   128 private:

   129 	RFs* iSession; // not owned

   130 	HBufC* iFilePath;

   131 	ContentAccess::CData* iData;

   132 

   133 	RFile   iLegacyFile;

   134 	RFile64 iFile64; //For defect EASA-84ZC6J 

   135 	TBool   iLegacyFileOpen;

   136 	};

   137 

   138 

   139 inline CF32File::CF32File() 

   140 	{

   141 	}

   142 

   143 inline CContentFile::CContentFile() 

   144 	{

   145 	}

   146 

   147 inline MGenericFile::~MGenericFile()

   148 	{

   149 	}

   150 

   151 #endif //__FILE_ACCESS_H__
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