--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/mmlibs/mmfw/inc/mmf/server/mmfbuffer.h	Tue Feb 02 01:56:55 2010 +0200
@@ -0,0 +1,258 @@
+// Copyright (c) 2002-2009 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\mmf\server\mmfbuffer.h
+// 
+//
+
+
+#ifndef __MMF_SERVER_BUFFER_H__
+#define __MMF_SERVER_BUFFER_H__
+
+#include <e32base.h>
+#include <mmf/server/mmfbuffer.hrh>
+
+
+/**
+@publishedAll
+@released
+
+Flag reflecting the current buffer status.
+*/
+enum TBufferStatus
+	{
+	/** The buffer is available for use */
+	EAvailable,
+
+	/** The buffer is currently being filled */
+	EBeingFilled,
+
+	/** The buffer is full */
+	EFull,
+
+	/** The buffer is currently being emptied */
+	EBeingEmptied,
+
+	/** The buffer is currently unavailable */
+	EUnAvailable
+	};
+
+
+/**
+@publishedAll
+@released
+
+Abstract representation of a buffer to contain multimedia data.
+*/
+class CMMFBuffer : public CBase
+	{
+public:
+	IMPORT_C static TBool IsSupportedDataBuffer(TUid aUid);
+	IMPORT_C static TBool IsFileServerSafe(TUid aUid);
+	/**
+	Returns the buffer type.
+
+	@return The buffer type.
+	*/
+	TUid Type() const {return iType;};
+	/**
+	Sets the buffer's status.
+
+	@param  aStatus
+	        The buffer's status.
+	*/
+	virtual void SetStatus(TBufferStatus aStatus) 
+			{iStatus = aStatus; if (iStatus == EAvailable) iPosition = 0;}
+	/**
+	Returns the buffer's status.
+
+	@return The buffer's status.
+	*/
+	TBufferStatus Status() {return iStatus;};
+
+	/**
+	Returns the size of the data in the buffer.
+
+	This is a virtual function that each derived class must implement.
+
+	@return The buffer size.
+	*/
+	virtual TUint BufferSize() const = 0;
+
+	/**
+	Destructor.
+	*/
+	virtual ~CMMFBuffer() {};
+	inline TTimeIntervalMicroSeconds TimeToPlay() const;
+	inline void SetTimeToPlay (TTimeIntervalMicroSeconds aTime);
+	inline TUint FrameNumber() const;
+	inline void SetFrameNumber(TUint aFrame);
+	inline void NextFrame();
+	inline virtual void SetPosition (TUint aPosition);
+	inline virtual TUint Position() const;
+	inline virtual TInt RequestSize() const;
+	inline void SetLastBuffer(TBool aLastBuffer);
+	inline TBool LastBuffer() const;
+protected:
+	CMMFBuffer(TUid aType): iType(aType), iStatus(EAvailable) {};	
+
+protected:
+	/** 
+	The buffer type. 
+	*/
+	TUid iType;
+
+	/** 
+	The current buffer status.
+
+	@see enum TBufferStatus
+	*/
+	TBufferStatus iStatus;
+
+	/**
+	The buffer timestamp, in microseconds. 
+	*/
+	TTimeIntervalMicroSeconds iTimeToPlay;
+
+	/** 
+	Used to store the current read/write position. Required when the codec and data path
+	may have to read and write the buffer in more than one pass.
+	*/
+	TUint iPosition;
+
+	/** 
+	The frame number.
+	*/
+	TUint iFrameNumber;
+
+	/**
+	Stores Request size, needed for dynamic buffer length.
+	*/
+	TInt iRequestSize;
+
+	/** 
+	Indicates if this is the last buffer. ETrue if it is.
+	*/
+	TBool iLastBuffer; 
+	};
+
+/**
+Returns the buffer timestamp, in microseconds.
+
+@return	The buffer timestamp, in microseconds.
+*/
+inline TTimeIntervalMicroSeconds CMMFBuffer::TimeToPlay() const
+	{
+	return iTimeToPlay;
+	}
+
+/**
+Sets the buffer timestamp, in microseconds.
+
+@param  aTime
+        The buffer timestamp, in microseconds.
+*/
+inline void CMMFBuffer::SetTimeToPlay (TTimeIntervalMicroSeconds aTime)
+	{
+	iTimeToPlay = aTime;
+	}
+
+/**
+Returns the frame number.
+
+@return The frame number.
+*/
+inline TUint CMMFBuffer::FrameNumber() const
+	{
+	return iFrameNumber;
+	}
+
+/**
+Sets the frame number. This is used for repositioning.
+
+@param  aFrameNumber
+        The frame number.
+*/
+inline void CMMFBuffer::SetFrameNumber (TUint aFrameNumber)
+	{
+	iFrameNumber = aFrameNumber;
+	}
+
+/**
+Sets the buffer as the next frame.
+*/
+inline void CMMFBuffer::NextFrame()
+	{
+	iFrameNumber++;
+	}
+
+
+/**
+Sets the current buffer read/write position.
+Used as read/write position on a buffer where a codec may need
+several passes on the same buffer.
+
+@param  aPosition
+        The buffer's number.
+*/
+inline void CMMFBuffer::SetPosition (TUint aPosition)
+	{
+	iPosition = aPosition;
+	}
+
+/**
+Returns the current buffer read/write position.
+Used as read/write position on a buffer where a codec may need
+several passes on the same buffer.
+
+@return The buffer's number.
+*/
+inline TUint CMMFBuffer::Position() const
+	{
+	return iPosition;
+	}
+
+/**
+Tests whether the buffer is the last buffer.
+
+@return A boolean indicating if the buffer is the last one. ETrue if it is the last buffer, 
+        EFalse otherwise.
+*/
+inline TBool CMMFBuffer::LastBuffer() const
+	{
+	return iLastBuffer;
+	}
+
+/**
+Sets the buffer as the last buffer.
+
+@param  aLastBuffer
+        A boolean indicating if the buffer is the last buffer. ETrue if it is the last buffer, 
+        EFalse otherwise.
+*/
+inline void CMMFBuffer::SetLastBuffer(TBool aLastBuffer)
+	{
+	iLastBuffer = aLastBuffer;
+	}
+
+/** 
+Returns the size of data processed by sink or data needed by source.
+
+@return The size of data
+*/
+inline TInt CMMFBuffer::RequestSize() const
+	{
+	return iRequestSize;
+	}
+
+#endif