// 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

*/

#include "cmtpusbcontainer.h"

#include "mtpusbdatatypeconstants.h"

// Dataset constants

const TUint CMTPUsbContainer::KFlatChunkSize(12);

// Dataset element metadata.

const CMTPTypeCompoundBase::TElementInfo CMTPUsbContainer::iElementMetaData[CMTPUsbContainer::ENumElements] = 

    {

        {EIdFlatChunk,      EMTPTypeFlat,       {EMTPTypeUINT32,    0,                  KMTPTypeUINT32Size}},   // EContainerLength

        {EIdFlatChunk,      EMTPTypeFlat,       {EMTPTypeUINT16,    4,                  KMTPTypeUINT16Size}},   // EContainerType

        {EIdFlatChunk,      EMTPTypeFlat,       {EMTPTypeUINT16,    6,                  KMTPTypeUINT16Size}},   // ECode

        {EIdFlatChunk,      EMTPTypeFlat,       {EMTPTypeUINT32,    8,                  KMTPTypeUINT32Size}},   // ETransactionID

        {EIdPayloadChunk,   EMTPTypeUndefined,  {EMTPTypeUndefined, KMTPNotApplicable,  KMTPNotApplicable}}     // EPayload

    };

/**

MTP USB device class generic bulk container dataset factory method. This method

is used to create an empty MTP USB device class generic bulk container dataset 

type. 

@return A pointer to an empty an empty MTP USB device class generic bulk 

container dataset type. Ownership IS transfered.

@leave One of the system wide error codes, if unsuccessful.

*/ 

EXPORT_C CMTPUsbContainer* CMTPUsbContainer::NewL()

    {

    CMTPUsbContainer* self = new (ELeave) CMTPUsbContainer(); 

    CleanupStack::PushL(self); 

    self->ConstructL();   

    CleanupStack::Pop(self);

    return self; 

    }

/**

Destructor.

*/

EXPORT_C CMTPUsbContainer::~CMTPUsbContainer()

    {

    iChunkHeader.Close();

    }

/**

Provides the bulk container payload.

@return The bulk container payload.

*/

EXPORT_C MMTPType* CMTPUsbContainer::Payload() const

    {    

    return iPayload;

    }

/**

Sets the bulk container payload.

@param aPayload The new bulk container payload.

*/

EXPORT_C void CMTPUsbContainer::SetPayloadL(MMTPType* aPayload)

    {    

    if (iPayload)

        {

        // Remove the existing payload from the super class.

        ChunkRemove(iElementMetaData[EPayload].iChunkId);

        }

    if (aPayload)

        {

        // Pass the payload to the super class for management.

        ChunkAppendL(*aPayload);  

        }

    iPayload = aPayload; 

    }

EXPORT_C TUint CMTPUsbContainer::Type() const

    {

    return EMTPUsbTypeContainer;

    }

const CMTPTypeCompoundBase::TElementInfo& CMTPUsbContainer::ElementInfo(TInt aElementId) const

    {

    __ASSERT_DEBUG((aElementId < ENumElements), User::Invariant());

    return iElementInfo[aElementId];

    }

/**

Constructor.

*/

CMTPUsbContainer::CMTPUsbContainer() : 

    CMTPTypeCompoundBase((!KJustInTimeConstruction), EIdNumChunks), 

    iChunkHeader(KFlatChunkSize, *this),

    iElementInfo(iElementMetaData, ENumElements)

    {

    }

/**

Second phase constructor.

*/   

void CMTPUsbContainer::ConstructL()

    {

    iChunkHeader.OpenL();

    ChunkAppendL(iChunkHeader);

    }