diff -r 000000000000 -r bde4ae8d615e os/ossrv/genericopenlibs/openenvcore/backend/inc/streambase.h
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/os/ossrv/genericopenlibs/openenvcore/backend/inc/streambase.h	Fri Jun 15 03:10:57 2012 +0200
@@ -0,0 +1,63 @@
+/*
+* Copyright (c) 2006-2009 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:
+* Name        : streambase.h
+* Part of     : stdio server
+* base implementation for media types
+*
+*/
+
+
+
+
+#ifndef _STREAMBASE_H_
+#define _STREAMBASE_H_
+
+#include <e32base.h>//CBase
+
+
+const TInt KMaxStatusTextLength = 128;
+
+enum TStreamType
+	{
+	EConsole =0,
+	EFile,
+	ESerial,
+	ENull
+	};
+
+//-----------------------------------------------------------------------
+//Class name: CStreamBase
+//Description: Abstract class that defines stream like objects.
+//-----------------------------------------------------------------------
+class CStreamBase : public CBase
+	{
+public:
+	virtual void WriteL(TDes8& aDes) = 0;
+	virtual void Read(TRequestStatus& aStatus, const TInt aLength) = 0;
+	virtual TDes8& Buf();
+ 	virtual void ReadCancel() = 0;	
+ 	virtual TStreamType Type() = 0;
+	virtual ~CStreamBase()
+		{
+		}
+protected:
+	TBuf8<256> iBuf; 	// buffer for holding stdin characters
+	CStreamBase()
+		{
+		iBuf.Zero();
+		}
+	};
+
+#endif //_STREAMBASE_H_