// Copyright (c) 2003-2009 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\common\mmfipc.h

// Thin interface layer to use either V1 or V2 IPC calls as appropriate

// 

//

#ifndef __MMF_COMMON_MMFIPC_SERVER_H__

#define __MMF_COMMON_MMFIPC_SERVER_H__

#include <e32base.h>

#ifdef SYMBIAN_ENABLE_SPLIT_HEADERS

#include <mmf/common/mmfipc.h>

#endif

// The following declarations are used instead of the native ones on the particular system variant:

//    RMmfIpcMessage replaces RMessage or RMessage2

//    CMmfIpcServer replaces CServer or CServer2

//    CMmfIpcSession replaces CSharableSession or CSession2

// They are used internally to the MMF component to provide configurability for the particular subsystem

#ifdef __MMF_USE_IPC_V2__

//typedef RMessage2 RMmfIpcMessage;

class CMmfIpcServer; // forward declaration

/**

 * derive CMmfIpcSession from CSession2 so we can bridge the differences to old CSharableSession

 *

 * @internalTechnology

 */

class CMmfIpcSession : public CSession2

	{

protected:

	virtual void CreateL(const CMmfIpcServer& aServer);

	CMmfIpcSession() {}

	// from CSession2

	void CreateL();

	};

/*

 * derive CMmfIpcServer from CServer2 so we can bridge difference to old CServer

 *

 * @internalTechnology

 */

class CMmfIpcServer : public CServer2

	{

protected:

	virtual CMmfIpcSession* NewSessionL(const TVersion& aVersion) const=0;

	CMmfIpcServer(TInt aPriority,TServerType aType=EUnsharableSessions);

private:

	// derived from CServer2

	CSession2* NewSessionL(const TVersion& aVersion,const RMessage2& aMessage) const;

	};

#else // __MMF_USE_IPC_V2__

// otherwise always use V1

//typedef RMessage RMmfIpcMessage;

typedef CServer CMmfIpcServer;

typedef CSharableSession CMmfIpcSession;

#endif // __MMF_USE_IPC_V2__

#if defined(__VC32__)

#pragma warning( disable : 4097 )	// typedef-name used as synonym for class-name 

#endif

/**

 * Adapt RMessage calls between IPC variants

 *

 * @internalTechnology

 */

class MmfMessageUtil 

	{

public:

	static TInt Read(const RMmfIpcMessage& aMessage, TInt aParam, TDes8& aResult);

	static TInt Write(const RMmfIpcMessage& aMessage, TInt aParam, const TDesC8& aValue);

	static void ReadL(const RMmfIpcMessage& aMessage, TInt aParam, TDes8& aResult);

	static void WriteL(const RMmfIpcMessage& aMessage, TInt aParam, const TDesC8& aValue);

	};

#include <mmf/common/mmfipcserver.inl>

#endif // __MMF_COMMON_MMFIPC_SERVER_H__