// 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 "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:

// mmrcserverpolicymanager.cpp

// 

//

#include "mmrcserverrulemanager.h"

#include "mmrcserversession.h"

#include "mmrcservercontroller.h"

#include "mmrcerrorcodes.h"

#include "mlogicalchain.h"

#include <a3f/a3f_trace_utils.h>

/**

 * By default Symbian 2nd phase constructor is private.

 * @param CMMRCServerController& A reference on the MMRC Server controller

 */

CMMRCServerRuleManager::CMMRCServerRuleManager(CMMRCServerController& aServerController)

:iMMRCServerController(aServerController)

	{

	TRACE_CREATE();

	DP_CONTEXT(----> CMMRCServerRuleManager::CMMRCServerRuleManager *CD1*, CtxDevSound, DPLOCAL);

	DP_IN();

	DP_OUT();

	}

/**

 * Destructor

 */

CMMRCServerRuleManager::~CMMRCServerRuleManager( )

	{

	DP_CONTEXT(----> CMMRCServerRuleManager::~CMMRCServerRuleManager *CD1*, CtxDevSound, DPLOCAL);

	DP_IN();

	DP_OUT();

	}

/**

 * Constructs, and returns a pointer to, a new CMMRCServerRuleManager object.

 * Leaves on failure.

 * @param CMMRCServerController& A reference on the MMRC Server controller

 * @return CMMRCServerRuleManager* A pointer to newly created utlitly object.

 */

CMMRCServerRuleManager* CMMRCServerRuleManager::NewL(CMMRCServerController& aServerController)

	{

	DP_STATIC_CONTEXT(----> CMMRCServerRuleManager::NewL *CD1*, CtxDevSound, DPLOCAL);

	DP_IN();

	CMMRCServerRuleManager* self = NewLC(aServerController);

	CleanupStack::Pop ( self );

	DP0_RET(self, "self=0x%x");

	}

/**

 * Constructs, leaves object on the cleanup stack, and returns a pointer

 * to, a new CMMRCServerRuleManager object.

 * Leaves on failure.

 * @param CMMRCServerController& A reference on the MMRC Server controller

 * @return CMMRCServerRuleManager* A pointer to newly created utlitly object.

 */

CMMRCServerRuleManager* CMMRCServerRuleManager::NewLC(CMMRCServerController& aServerController)

	{

	DP_STATIC_CONTEXT(----> CMMRCServerRuleManager::NewLC *CD1*, CtxDevSound, DPLOCAL);

	DP_IN();

	CMMRCServerRuleManager* self = new(ELeave) CMMRCServerRuleManager(aServerController);

	CleanupStack::PushL (self );

	self->ConstructL (  );

	DP0_RET(self, "self=0x%x");

	}

/**

 	CMMRCServerRuleManager::ConstructL

 	Symbian 2nd phase constructor can leave.

 */

void CMMRCServerRuleManager::ConstructL()

	{

	DP_CONTEXT(----> CMMRCServerRuleManager::ConstructL *CD1*, CtxDevSound, DPLOCAL);

	DP_IN();

	DP_OUT();

	}

/**

 * Deduce the rule on the message according to the previous and current state

 * Return EProcessOnIdle if no rule has been found.

 * Leaves on failure.

 * @param TAudioState aAudioStateAllocatedResource

 * @param TAudioState aAudioStateRequiringProcess

 * @return TMMRCRule rule

 */

TMMRCRule CMMRCServerRuleManager::DecisionRule(TAudioState aAudioStateAllocatedResource, TAudioState aAudioStateRequiringProcess )

	{

	DP_CONTEXT(RMMRCClient::Open *CD1*, CtxDevSound, DPLOCAL);

	DP_IN();

	TMMRCRule rule = EProcessOnIdle;

	switch ( aAudioStateAllocatedResource )

		{

		//

		case EUninitialized:

		case EInitialized:

		case EDead:

			rule = EAlwaysProcess;

		break;

		//

		case EIdle:

		case EPrimed:

		case EActive:

			{

			if ( aAudioStateRequiringProcess == EUninitialized || aAudioStateRequiringProcess == EInitialized)

				{

				rule = EAlwaysProcess;

				}

			}

		break;

		default:

			__ASSERT_DEBUG(EFalse, User::Panic(KMMRCErrorNameUnkwnonAudioState, EMMRCErrorUnkwnonAudioState));

		break;

		}

	DP0_RET(rule, "rule=%d");

	}

/**

 * Deduce the rule on the message according to the previous and current state

 * Return EStop if no rule has been found.

 * @param TAudioState aAudioStateAllocatedResource

 * @param TAudioState aAudioStateRequiringProcess

 * @return TMMRCRule rule

 */

TReason CMMRCServerRuleManager::ActionReason(TAudioState aAudioStateLastCommited, TAudioState aAudioStateRequested )

	{

	DP_CONTEXT(----> CMMRCServerRuleManager::ActionReason *CD1*, CtxDevSound, DPLOCAL);

	DP_IN();

	TReason reason;

	switch (aAudioStateRequested )

		{

		case EUninitialized:

		if ( aAudioStateLastCommited == EInitialized )

			{

			reason = EUninitialize;

			}

		else

			{

			reason = EUninitialize ;

			}

		break;

		case EInitialized:

			if ( aAudioStateLastCommited == EUninitialized )

				{

				reason = EInitialize;

				}

			else if ( aAudioStateLastCommited == EIdle )

				{

				reason = EUnload;

				}

			else if ( aAudioStateLastCommited == EPrimed )

				{

				reason = EPrimeReason;

				}

			else if ( aAudioStateLastCommited == EActive )

				{

				reason = EStop;

				}

			else 

				{

				reason = EInitialize ;

				}

		break;

		case EIdle:

			if ( aAudioStateLastCommited == EUninitialized )

				{

				reason = ELoad;

				}

			else if ( aAudioStateLastCommited == EInitialized )

				{

				reason = ELoad;

				}

			else if ( aAudioStateLastCommited == EPrimed )

				{

				reason = EStop;

				}

			else if ( aAudioStateLastCommited == EActive )

				{

				reason = EStop;

				}

			else 

				{

				reason = ELoad;

				}

		break;

		case EPrimed:

			if ( aAudioStateLastCommited == EIdle )

				{

				reason = EPrimeReason;

				}

			else if ( aAudioStateLastCommited == EActive )

				{

				reason = EPrimeReason;

				}

			else 

				{

				reason = EPrimeReason;

				}

		break;

		case EActive:

			if ( aAudioStateLastCommited == EPrimed )

				{

				reason = EActivate;

				}

			else if ( aAudioStateLastCommited == EIdle )

				{

				reason = EActivate;

				}

			else 

				{

				reason = EActivate;

				}

		break;

		case EDead:

		default:

			reason = EStop;

		break;

		}

	DP0_RET(reason, "reason=%d");

	}

//EOF