1.1 --- /dev/null	Thu Jan 01 00:00:00 1970 +0000
     1.2 +++ b/os/mm/mmlibs/mmfw/src/Client/Audio/MmfFifo.h	Fri Jun 15 03:10:57 2012 +0200
     1.3 @@ -0,0 +1,92 @@
     1.4 +// Copyright (c) 2001-2009 Nokia Corporation and/or its subsidiary(-ies).
     1.5 +// All rights reserved.
     1.6 +// This component and the accompanying materials are made available
     1.7 +// under the terms of "Eclipse Public License v1.0"
     1.8 +// which accompanies this distribution, and is available
     1.9 +// at the URL "http://www.eclipse.org/legal/epl-v10.html".
    1.10 +//
    1.11 +// Initial Contributors:
    1.12 +// Nokia Corporation - initial contribution.
    1.13 +//
    1.14 +// Contributors:
    1.15 +//
    1.16 +// Description:
    1.17 +//
    1.18 +
    1.19 +#ifndef __MMFFIFO_H_
    1.20 +#define __MMFFIFO_H_
    1.21 +
    1.22 +// standard EPOC include header files
    1.23 +#include <e32base.h>
    1.24 +#include <e32std.h>
    1.25 +
    1.26 +
    1.27 +/**
    1.28 +	Class for storing stream data 
    1.29 +*/
    1.30 +class TMMFFifoItemBase
    1.31 +	{
    1.32 +public:
    1.33 +	static const TInt	iOffset;
    1.34 +private:
    1.35 +	TSglQueLink			iSlink;
    1.36 +	};
    1.37 +
    1.38 +template<class T>
    1.39 +class TMMFFifoItem : public TMMFFifoItemBase
    1.40 +	{
    1.41 +public:
    1.42 +	inline TMMFFifoItem(T& aData);
    1.43 +	inline T& GetData();
    1.44 +private:
    1.45 +	T& iData;
    1.46 +	};
    1.47 +
    1.48 +/**
    1.49 +	Class for processing stream data queue (add, get, remove etc)
    1.50 +*/
    1.51 +class CMMFFifoBase	: public CBase
    1.52 +	{
    1.53 +public:
    1.54 +	virtual ~CMMFFifoBase();
    1.55 +	TBool IsEmpty();
    1.56 +	void AddToFifo(TMMFFifoItemBase& aItem);
    1.57 +protected:
    1.58 +	CMMFFifoBase();
    1.59 +	void RemoveFirstItemBase();
    1.60 +	TMMFFifoItemBase* GetBase();
    1.61 +private:
    1.62 +	TSglQue<TMMFFifoItemBase>		iFifo;
    1.63 +	TSglQueIter<TMMFFifoItemBase>	iFifoIter;
    1.64 +	};
    1.65 +
    1.66 +template<class T>
    1.67 +class CMMFFifo : public CMMFFifoBase
    1.68 +	{
    1.69 +public:
    1.70 +	inline void RemoveFirstItem();
    1.71 +	inline TMMFFifoItem<T>* Get();
    1.72 +	};
    1.73 +
    1.74 +
    1.75 +template <class T>
    1.76 +TMMFFifoItem<T>::TMMFFifoItem(T& aData)
    1.77 +: iData(aData)
    1.78 +	{}
    1.79 +
    1.80 +template <class T>
    1.81 +T& TMMFFifoItem<T>::GetData()
    1.82 +	{ return iData; }
    1.83 +
    1.84 +//
    1.85 +
    1.86 +template <class T>
    1.87 +void CMMFFifo<T>::RemoveFirstItem()
    1.88 +	{ RemoveFirstItemBase(); }
    1.89 +
    1.90 +template <class T>
    1.91 +inline TMMFFifoItem<T>* CMMFFifo<T>::Get()
    1.92 +	{ return STATIC_CAST(TMMFFifoItem<T>*, GetBase()); }
    1.93 +
    1.94 +
    1.95 +#endif