// Copyright (c) 2008-2009 Nokia Corporation and/or its subsidiary(-ies).

// All rights reserved.

// This component and the accompanying materials are made available

// under the terms of the License "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:

// BOT Protocol layer for USB Mass Storage Class

// 

//

/**

 @file

 @internalTechnology

*/

#ifndef MBLOCKTRANSFERPROTOCOL_H

#define MBLOCKTRANSFERPROTOCOL_H

/**

Interface class to be provided by the Protocol layer. The interface methods are

used by TBlockTransfer class which manages block read and block writes of the

data to be transferred.

*/

class MBlockTransferProtocol

    {

public:

    /**

    Read a block of data aligned to block boundary.

    @param aPos The position aligned to block boundary

    @param aBuf The buffer to copy the data into

    @param aLength The Length in bytes, a multiple of the block length

    */

    virtual void BlockReadL(TUint64 aPos, TDes8& aBuf, TInt aLength) = 0;

    /**

    Write a block of data aligned to block boundary.

    @param aPos The position aligned to block boundary

    @param aBuf The buffer containing the data to write

    @param aOffset The offset into the buffer to the start of the block

    @param aLength The length in bytes, must be a multiple of the block length

    */

    virtual void BlockWriteL(TUint64 aPos, TDesC8& aBuf, TUint aOffset, TInt aLength) = 0;

    };

#endif // MBLOCKTRANSFERPROTOCOL_H