// Copyright (c) 2001-2009 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:

//

#include "MmfFifo.h"

const TInt TMMFFifoItemBase::iOffset = _FOFF(TMMFFifoItemBase, iSlink);

/**

 *

 * Construct

 *

 */

CMMFFifoBase::CMMFFifoBase() : iFifo(TMMFFifoItemBase::iOffset), iFifoIter(iFifo)

	{

	}

/**

 *

 *	Destructor

 *

 */

CMMFFifoBase::~CMMFFifoBase()

	{

	TMMFFifoItemBase* item;

	iFifoIter.SetToFirst();

	while((item = iFifoIter++)!=NULL)

		{

		iFifo.Remove(*item);

		delete item;

		};

	}

/**

 *

 *  To remove the first stream data from queue	

 *

 */

void CMMFFifoBase::RemoveFirstItemBase()

	{

	if(!iFifo.IsEmpty())

		{

		iFifo.Remove(*iFifo.First());

		}

	}

/**

 *

 *  To get the first stream data from queue	

 *

 *	@return	"CMMFFifoItem*"	

 *			a pointer point to the stream data

 *

 */

TMMFFifoItemBase* CMMFFifoBase::GetBase()

	{

	TMMFFifoItemBase* firstItem;

	if(iFifo.IsEmpty())

		return NULL;

	firstItem = iFifo.First();

	return firstItem;

	}

/**

 *

 *  To add a stream data to the queue, the data will be added at end of queue

 *

 *	@param	"TMMFFifoItemBase& aItem"	

 *			a reference to data

 *

 */

void CMMFFifoBase::AddToFifo(TMMFFifoItemBase& aItem)

	{

	iFifo.AddLast(aItem);

	}

/**

 *

 *  To check stream data queue empty or not	

 *

 *	@return	"TBool"	

 *			a boolean value to indicate the queue is empty or not (ETrue is empty)

 *

 */

TBool CMMFFifoBase::IsEmpty()

	{

	return iFifo.IsEmpty();

	}