// 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:

 //

 #ifndef __MMFFIFO_H_

 #define __MMFFIFO_H_

 // standard EPOC include header files

 #include <e32base.h>

 #include <e32std.h>

 /**

 	Class for storing stream data 

 */

 class TMMFFifoItemBase

 	{

 public:

 	static const TInt	iOffset;

 private:

 	TSglQueLink			iSlink;

 	};

 template<class T>

 class TMMFFifoItem : public TMMFFifoItemBase

 	{

 public:

 	inline TMMFFifoItem(T& aData);

 	inline T& GetData();

 private:

 	T& iData;

 	};

 /**

 	Class for processing stream data queue (add, get, remove etc)

 */

 class CMMFFifoBase	: public CBase

 	{

 public:

 	virtual ~CMMFFifoBase();

 	TBool IsEmpty();

 	void AddToFifo(TMMFFifoItemBase& aItem);

 protected:

 	CMMFFifoBase();

 	void RemoveFirstItemBase();

 	TMMFFifoItemBase* GetBase();

 private:

 	TSglQue<TMMFFifoItemBase>		iFifo;

 	TSglQueIter<TMMFFifoItemBase>	iFifoIter;

 	};

 template<class T>

 class CMMFFifo : public CMMFFifoBase

 	{

 public:

 	inline void RemoveFirstItem();

 	inline TMMFFifoItem<T>* Get();

 	};

 template <class T>

 TMMFFifoItem<T>::TMMFFifoItem(T& aData)

 : iData(aData)

 	{}

 template <class T>

 T& TMMFFifoItem<T>::GetData()

 	{ return iData; }

 //

 template <class T>

 void CMMFFifo<T>::RemoveFirstItem()

 	{ RemoveFirstItemBase(); }

 template <class T>

 inline TMMFFifoItem<T>* CMMFFifo<T>::Get()

 	{ return STATIC_CAST(TMMFFifoItem<T>*, GetBase()); }

 #endif