// 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