// Copyright (c) 2008-2009 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:

// mmcamerapolicymanager.h

// 

//

/**

 @file

 @internalTechnology

*/

#ifndef MMCAMERASERVERPOLICYMANAGER_H

#define MMCAMERASERVERPOLICYMANAGER_H

#include <e32std.h>

#include <e32hashtab.h>

#include <e32cmn.h>

class CMMCameraServerSession;

typedef TDblQue<CMMCameraServerSession> TCamSessionQue;

typedef TDblQueIter<CMMCameraServerSession> TCamSessionIter;

// ECAM Server Policies

static _LIT_SECURITY_POLICY_C1 (KMMCameraServerPolicyUserEnvironment, ECapabilityUserEnvironment);

static _LIT_SECURITY_POLICY_C1 (KMMCameraServerPolicyMultimediaDD, ECapabilityMultimediaDD);

/**

 * Manages policy for the ECAM server.

 * 

 * Handles both Platsec capability checks and Reserve/Release of camera devices.

 */  

class CMMCameraServerPolicyManager : public CBase

	{

public:

	static CMMCameraServerPolicyManager* NewL();

	~CMMCameraServerPolicyManager();

	void ReleaseClient(CMMCameraServerSession* aSession);

	TBool ReserveClient(CMMCameraServerSession* aSession);

	void OnConnectL (const RMessage2& aMessage);

	void ServiceHandlerL(const RMessage2& aMessage);

private:

	CMMCameraServerPolicyManager();   // Named Constructor Idiom concept used

	void ConstructL();

	CMMCameraServerSession* FindFirstInQue(TInt aIndex);

	CMMCameraServerSession* FindLastInQue(TInt aIndex);

	void ReserveUpdate(CMMCameraServerSession* aSession);

	TBool CheckControlOvertaking(CMMCameraServerSession* aSession); // informs whether the new client can overtake camera control from the previously reserved ones 

private:

	TCamSessionQue iReservedSessionQ;

	TCamSessionIter iIter;

	TInt iCameraIndex;

    TInt iHandle;

    TInt iPriority;

	TBool iMMCapability;   

	};

#endif // MMCAMERASERVERPOLICYMANAGER_H