--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/emulator/emulatorbsp/win_drive/win_media_device.h	Tue Feb 02 01:39:10 2010 +0200
@@ -0,0 +1,203 @@
+// Copyright (c) 2007-2009 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:
+// Definitions for the classes that represent Windows media objects, e.g. a file, physical drive or partition.
+// 
+//
+
+/**
+ @file
+*/
+
+#ifndef WIN_MEDIA_DEVICE_H
+#define WIN_MEDIA_DEVICE_H
+
+#include "common.h"
+
+#define WIN32_LEAN_AND_MEAN
+#pragma warning( disable : 4201 ) // nonstandard extension used : nameless struct/union
+#include <windows.h>
+#pragma warning( disable : 4201 ) // nonstandard extension used : nameless struct/union
+#include <winioctl.h> 
+#pragma warning( default : 4201 ) // nonstandard extension used : nameless struct/union
+
+
+//-----------------------------------------------------------------------------
+
+const TUint32 KDefaultSectorSz = 512;       //-- default sector size
+const TUint32 KMinMediaSizeInSectors = 128; //-- minimal number of sectors on the media allowed
+
+
+//-----------------------------------------------------------------------------
+
+/** 
+    this structure describes "drive" geometry
+    the "drive" consists of a number of sectors.
+*/
+class TDriveGeometry
+{
+ public:
+    TDriveGeometry() {iBytesPerSector=0; iSizeInSectors=0;}
+    
+    TInt64 TotalSizeInBytes() const {return iBytesPerSector*(TInt64)iSizeInSectors;}
+
+ public:
+
+    TUint32 iBytesPerSector;  ///< bytes per sectors (usually 512)
+    TUint32 iSizeInSectors;   ///< size of the bedia in sectors
+};
+
+
+//-----------------------------------------------------------------------------
+
+/**
+    Windows media device creation parameters
+*/
+class TMediaDeviceParams
+{
+ public:       
+ 
+    TMediaDeviceParams() {ipDevName = NULL; iReadOnly = EFalse;}
+
+ public:
+    TDriveGeometry iDrvGeometry;    ///< drive geometry
+    const char*    ipDevName;       ///< windows device name
+    TBool          iReadOnly;       ///< if ETrue, the device shall be opened as RO
+
+};
+
+//-----------------------------------------------------------------------------
+
+/**
+    Abstract class representing interface to the Windows device (file or volume).
+*/
+class CWinMediaDeviceBase
+{
+ public:  
+             CWinMediaDeviceBase();
+    virtual ~CWinMediaDeviceBase();
+
+    virtual TInt Connect(const TMediaDeviceParams& aParams)=0;
+    virtual void Disconnect(); 
+
+
+    virtual TInt Read(TInt64 aPos,TInt aLength, TDes8& aDataDes)=0;
+    virtual TInt Write(TInt64 aPos,TInt aLength, const TDesC8& aDataDes)=0;
+    virtual TInt Erase(TInt64 aPos, TUint32 aLength, TUint8 aFill);
+
+    void  GetDriveGeometry(TDriveGeometry& aDG) const {aDG = iDrvGeometry;}
+
+ protected:
+    
+    CWinMediaDeviceBase(const CWinMediaDeviceBase&);
+    CWinMediaDeviceBase& operator=(const CWinMediaDeviceBase&);
+    
+    inline HANDLE Handle() const {return iDevHandle;}
+    inline TBool HandleValid() const;
+    inline TBool HandleValid(HANDLE aHandle) const;
+    
+    TUint32 BytesPerSector() const {return iDrvGeometry.iBytesPerSector;}
+
+    TInt MapWinError(DWORD aWinError) const; 
+
+    enum {KScratchBufSz = 128*1024}; ///< scratch buffer size
+
+ protected:
+    
+    HANDLE              iDevHandle;     ///< Windows device handle
+    TDriveGeometry      iDrvGeometry;   ///< drive geometry.
+    TUint8*             ipScratchBuf;   ///< scratch buffer for IO operations
+};
+
+//-----------------------------------------------------------------------------
+
+TBool CWinMediaDeviceBase::HandleValid() const 
+{
+    return HandleValid(iDevHandle);
+}
+
+TBool CWinMediaDeviceBase::HandleValid(HANDLE aHandle) const 
+{
+    return aHandle && (aHandle != INVALID_HANDLE_VALUE);
+}
+
+
+//-----------------------------------------------------------------------------
+
+/**
+    This class represents a windows "volume" device, like a physical or logical drive or partition.
+    it can also handle files, but not very effectiively.
+*/
+class CWinVolumeDevice: public CWinMediaDeviceBase
+{
+ public:  
+    CWinVolumeDevice();
+   ~CWinVolumeDevice();
+
+    virtual TInt Connect(const TMediaDeviceParams& aParams);
+    virtual TInt Read(TInt64 aPos,TInt aLength, TDes8& aDataDes);
+    virtual TInt Write(TInt64 aPos,TInt aLength, const TDesC8& aDataDes);
+ private:   
+    
+    MEDIA_TYPE iMediaType;  ///< windows media type.
+};
+
+
+
+//-----------------------------------------------------------------------------
+
+/**
+    This class represents a windows "file" device, i.e. image file on some drive
+*/
+class CWinImgFileDevice: public CWinMediaDeviceBase
+{
+ public:  
+    CWinImgFileDevice();
+   ~CWinImgFileDevice();
+
+    virtual TInt Connect(const TMediaDeviceParams& aParams);
+    virtual void Disconnect(); 
+
+    virtual TInt Read(TInt64 aPos,TInt aLength, TDes8& aDataDes);
+    virtual TInt Write(TInt64 aPos,TInt aLength, const TDesC8& aDataDes);
+
+ private:
+   
+ private:   
+    HANDLE  ihFileMapping; ///< handle for the image file mapping
+    TUint8* ipImageFile;   ///< pointer to the beginning of the image file mapped into memory
+};
+
+
+
+
+
+
+
+
+
+
+#endif //WIN_MEDIA_DEVICE_H
+
+
+
+
+
+
+
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+
+