/*

* Copyright (c) 2007-2009 Nokia Corporation and/or its subsidiary(-ies).

* All rights reserved.

* This component and the accompanying materials are made available

* under the terms of the License "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: 

* Library to add s32strm support for IPC (ie. stream via multiple IPC read/writes instead of

* copying to a buffer and streaming to/from there.

*

*/

/**

 @file

 @internalTechnology

 @released

*/

#ifndef __IPCBUF_H__

#define __IPCBUF_H__

#include <e32base.h>

#include <s32buf.h>

_LIT(KIpcBufPanic, "IpcBuf");

class RIpcBuf : public MStreamBuf

	{

public:

IMPORT_C void Open(const RMessagePtr2& aMessage, TInt aMessageSlot);

protected:

IMPORT_C TStreamPos DoSeekL(TMark aMark, TStreamLocation aLocation, TInt anOffset);

IMPORT_C TInt DoReadL(TAny *aPtr, TInt aMaxLength);

IMPORT_C void DoWriteL(const TAny* aPtr,TInt aLength);

private:

	enum TIpcBufPanic

		{

		EIpcBufSeekUnknownLocation,

		EIpcBufSeekBadOffset

		};

private:

	TInt iReadPos;

	TInt iWritePos;

	RMessagePtr2 iMessage;

	TInt iMessageSlot;

	};

#endif /* __IPCBUF_H__ */