// Copyright (c) 2006-2009 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:

//

/**

 @file

 @internalComponent

*/

#ifndef CMTPSTORAGEMGR_H

#define CMTPSTORAGEMGR_H

#include <e32base.h>

#include <f32file.h>

#include <mtp/mmtpstoragemgr.h>

#include "mtpdebug.h"

#include "rmtpframework.h"

/** 

Implements the MTP storage manager interface.

@internalComponent

*/

class CMTPStorageMgr : 

    public CBase, 

    public MMTPStorageMgr

    {

public:

    IMPORT_C static CMTPStorageMgr* NewL();

    IMPORT_C ~CMTPStorageMgr();

    IMPORT_C static TUint LogicalStorageNumber(TUint32 aStorageId);

    IMPORT_C static TUint LogicalStorageOwner(TUint32 aStorageId);

    IMPORT_C static TUint PhysicalStorageNumber(TUint32 aStorageId);

    IMPORT_C static TUint PhysicalStorageOwner(TUint32 aStorageId);

    IMPORT_C void SetDefaultStorageId(TUint32 aStorageId);

    IMPORT_C void SetDriveMappingL(TDriveNumber aDriveNumber, TUint32 aStorageId);

    IMPORT_C void SetFrameworkId(TUint aDataProviderId);

public: // From MMTPStorageMgr

    IMPORT_C TUint32 AllocateLogicalStorageIdL(TUint aDataProviderId, TDriveNumber aDriveNumber, const CMTPStorageMetaData& aStorage);

    IMPORT_C TUint32 AllocateLogicalStorageIdL(TUint aDataProviderId, TUint32 aPhysicalStorageId, const CMTPStorageMetaData& aStorage);

    IMPORT_C TUint32 AllocatePhysicalStorageIdL(TUint aDataProviderId, const CMTPStorageMetaData& aStorage);

    IMPORT_C TInt DeallocateLogicalStorageId(TUint aDataProviderId, TUint32 aLogicalStorageId);

    IMPORT_C void DeallocateLogicalStorageIds(TUint aDataProviderId, TUint32 aPhysicalStorageId);

    IMPORT_C TInt DeallocatePhysicalStorageId(TUint aDataProviderId, TUint32 aPhysicalStorageId);

    IMPORT_C TUint32 DefaultStorageId() const;

    IMPORT_C TInt DriveNumber(TUint32 aStorageId) const;

    IMPORT_C TInt32 FrameworkStorageId(TDriveNumber aDriveNumber) const;

    IMPORT_C void GetAvailableDrivesL(RArray<TDriveNumber>& aDrives) const;

    IMPORT_C void GetLogicalStoragesL(const TMTPStorageMgrQueryParams& aParams, RPointerArray<const CMTPStorageMetaData>& aStorages) const;

    IMPORT_C void GetPhysicalStoragesL(const TMTPStorageMgrQueryParams& aParams, RPointerArray<const CMTPStorageMetaData>& aStorages) const;

    IMPORT_C TUint32 LogicalStorageId(TUint32 aStorageId) const;

    IMPORT_C TInt32 LogicalStorageId(const TDesC& aStorageSuid) const;

    IMPORT_C TInt32 PhysicalStorageId(TDriveNumber aDriveNumber) const;

    IMPORT_C TUint32 PhysicalStorageId(TUint32 aStorageId) const;

    IMPORT_C const CMTPStorageMetaData& StorageL(TUint32 aStorageId) const;

    IMPORT_C TUint32 StorageId(TUint32 aPhysicalStorageId, TUint32 aLogicalStorageId) const;

    IMPORT_C TBool ValidStorageId(TUint32 aStorageId) const;

    IMPORT_C CMTPTypeString* VolumeIdL(TUint aDataProviderId, TUint32 aStorageId, const TDesC& aVolumeIdSuffix) const;

private:

    CMTPStorageMgr();

    void ConstructL();

    TInt32 AllocateLogicalStorageId(TUint aDataProviderId, TUint32 aPhysicalStorageId);

    TInt32 AllocatePhysicalStorageId(TUint aDataProviderId);

    TUint32 EncodeLogicalStorageId(TUint32 aPhysicalStorageId, TUint aDataProviderId, TUint aStorageNumber);

    TUint32 EncodeLogicalStorageNumber(TUint aStorageNumber);

    TUint32 EncodeLogicalStorageOwner(TUint aDataProviderId);

    TUint32 EncodePhysicalStorageId(TUint aDataProviderId, TUint aStorageNumber);

    TUint32 EncodePhysicalStorageNumber(TUint aStorageNumber);

    TUint32 EncodePhysicalStorageOwner(TUint aDataProviderId);

    void RemoveLogicalStorageL(TUint aIdx);

    CMTPStorageMetaData& StorageMetaDataL(TUint32 aStorageId);

    static TBool StorageKeyMatchSuid(const TDesC* aSuid, const CMTPStorageMetaData& aStorage);

    static TInt StorageOrder(const CMTPStorageMetaData& aL, const CMTPStorageMetaData& aR);

    static TInt StorageOrder(const TUint32* aKey, const CMTPStorageMetaData& aStorage);

private: // Owned

    /**

    FLOGGER debug trace member variable.

    */

    __FLOG_DECLARATION_MEMBER_MUTABLE;

    /**

    The default MTP storage ID.

    */

    TUint32                             iDefaultStorageId;

    /**

    The framework storages (drives) owning data provider ID.

    */

    TInt                                iFrameworkId;

    /**

    The Symbian OS drive number to default MTP StorageID mapping table. This 

    StorageID may either be the physical MTP StorageID or the default logical 

    MTP StorageID.

    */

    TFixedArray<TInt, KMaxDrives>       iMapDriveToStorage;

    /**

    The physical storage numbers allocation table. Indexed by physical storage 

    owner data provider ID.

    */

    RArray<TUint>                       iPhysicalStorageNumbers;

    /**

    The framework singletons.

    */

    RMTPFramework                       iSingletons;

    /**

    The storages table.

    */

    RPointerArray<CMTPStorageMetaData>  iStorages;

    };

#endif // CMTPSTORAGEMGR_H