www.pudn.com > NeroSDK-v1.05.zip > FileSystemBlockReaderInterface.h

/****************************************************************************** 
|* THIS CODE AND INFORMATION IS PROVIDED "AS IS" WITHOUT WARRANTY OF 
|* ANY KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING BUT NOT LIMITED TO 
|* THE IMPLIED WARRANTIES OF MERCHANTABILITY AND/OR FITNESS FOR A 
|* PARTICULAR PURPOSE. 
|*  
|* Copyright 1995-2004 Ahead Software AG. All Rights Reserved. 
|*----------------------------------------------------------------------------- 
|* NeroSDK / NeroAPI 
|* 
|* PROGRAM: FileSystemBlockReaderInterface.h 
|* 
|* PURPOSE: This file contains an abstract interface for reading from block  
|*          devices. It will provide necessary data about the underlying  
|*          medium as well as cache data if necessary. 
******************************************************************************/ 
#ifndef FILESYSTEMBLOCKREADERINTERFACE_H 
#define FILESYSTEMBLOCKREADERINTERFACE_H 
 
 
#include  
 
 
#if defined(__BORLANDC__) 
// NEROAPI expects structs to be 8byte aligned 
#pragma pack(push, 8)  
// tell Borland C++ Builder to treat enums as int 
#pragma option push -b  
#endif 
 
 
typedef __int64 NeroFSSecNo; // All sector references use this type. LBA adressing is used throughout the interface 
 
typedef enum 
{ 
	errOK=0, 
	errEndOfDir,	// Deprecated. Should never be returned, to be treated as errOK 
	errEndOfFile,	// Behaviour see libc read command 
	errReadError, 
	errInvalidFS, 
	errNoDirectory, 
	errNoFile, 
	errNotSupported, 
	errIllegalArgument, 
	errWriteError, 
	errInternalError, 
	errFileLocked 
} NeroFSError; 
 
 
typedef enum 
{ 
	vtData=0,		// track/partition contains data sectors 
	vtAudio=1,		// track/partition contains audio sectors 
	vtReserved=2	// track/partition hasn't been written yet,  
					// returned for reserved fragments of DVD+R media (NeroAPI 6.0.0.11+) 
} NeroFSTrackType; 
 
typedef struct  
{ 
	int				PartitionNum;    // The current partition number 
	NeroFSSecNo     PartitionStart;  // The start sector for this Partition 
	NeroFSSecNo		PartitionSize;   // The number of sectors this Partition contains 
	NeroFSTrackType	PartitionType;	 // The type of Partition 
	DWORD			sectorSize;      // Sector size for this Partition 
} NeroFSPartitionInfo; 
 
class INeroFileSystemBlockReader 
{ 
public: 
	virtual int					       GetNumPartitions() = 0; 
	virtual const NeroFSPartitionInfo &GetPartitionInfo(int iNumPartition) = 0;  
 
	// Returns the partition a given sector resides in 
	virtual const NeroFSPartitionInfo &GetPartitionForSector(NeroFSSecNo secNo) = 0; 
 
	// Reading methods. The Buffered varient will use a cache to optimize filesystem access. 
	// It should be used when reading directory structures while the UnBuffered method should be 
	// used when reading file contents 
	// Both methods return error codes as described in NeroFSError 
	// Your read requests may not cross partition boundaries!   
	virtual NeroFSError ReadSectorsBuffered  (void *pData, NeroFSSecNo startSector, NeroFSSecNo noSectors, NeroFSSecNo &noSectorsRead) = 0; 
	virtual NeroFSError ReadSectorsUnBuffered(void *pData, NeroFSSecNo startSector, NeroFSSecNo noSectors, NeroFSSecNo &noSectorsRead) = 0; 
 
	virtual ~INeroFileSystemBlockReader() {}; 
}; 
 
 
#if defined(__BORLANDC__) 
#pragma pack(pop) 
#pragma option pop  
#endif 
 
 
#endif // FILESYSTEMBLOCKREADERINTERFACE_H