// 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();

 	}