// 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 TMTPUSBPARAMETERPAYLOADBLOCK_H

#define TMTPUSBPARAMETERPAYLOADBLOCK_H

#include <mtp/tmtptypeflatbase.h> 

/**

Defines the MTP USB device class parameter block dataset. This dataset is used

as the variable length Command and Response type bulk container payload.

@internalComponent

*/

class TMTPUsbParameterPayloadBlock : public TMTPTypeFlatBase

    {

public:

    /**

    MTP operation request dataset element identifiers.

    */      

    enum TElements

        {

        EParameter1,

        EParameter2,

        EParameter3,

        EParameter4,

        EParameter5,

        ENumElements, 

        };  

public:

    IMPORT_C TMTPUsbParameterPayloadBlock();

    IMPORT_C TUint NumParameters() const;

    IMPORT_C void CopyIn(const TMTPTypeFlatBase& aFrom, TUint aParamStartOffset, TUint aParamEndOffSet, TBool aIsNullParamValid, TUint aNumOfNullParam);

    IMPORT_C void CopyOut(TMTPTypeFlatBase& aTo, TUint aParamStartOffset, TUint aParamEndOffset);

public: // From TMTPTypeFlatBase

    IMPORT_C void Reset();

    IMPORT_C void SetUint32(TInt aElementId, TUint32 aData); 

    IMPORT_C TUint32 Uint32(TInt aElementId) const;

    IMPORT_C TInt FirstReadChunk(TPtrC8& aChunk) const;

    IMPORT_C TUint64 Size() const;

    IMPORT_C TUint Type() const;

    IMPORT_C TBool CommitRequired() const;

    IMPORT_C MMTPType* CommitChunkL(TPtr8& aChunk);

private: // From TMTPTypeFlatBase

    IMPORT_C const TMTPTypeFlatBase::TElementInfo& ElementInfo(TInt aElementId) const; 

private: 

    /**

    The maximum dataset size in bytes.

    */

    static const TInt                               KMaxSize = 20;

    /**

    The dataset element metadata table content.

    */

    static const TMTPTypeFlatBase::TElementInfo     iElementMetaData[];

    /**

    The dataset element metadata table.

    */

    const TFixedArray<TElementInfo, ENumElements>   iElementInfo;

    /**

    The data buffer.

    */

    TBuf8<KMaxSize>                                 iBuffer;

    /**

    The number of parameters in the block which are set.

    */

    TUint                                           iNumParameters;

    };

#endif // TMTPUSBPARAMETERPAYLOADBLOCK_H