/*

* Copyright (c) 2006 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:  Project file for EnhancedMediaClient Utility

*

*/

#include "BalanceEffectImpl.h"

// For KUidInterfaceMMFAudioPlayDevice

#include <mmf/common/mmfstandardcustomcommands.h>

#ifdef SYMBIAN_ENABLE_SPLIT_HEADERS

#include <mmf/common/mmfstandardcustomcommandsenums.h>

#endif

// For TMMFAudioConfig

#include <mmf/common/mmfaudio.h>

// For TMMFMessageDestinationPckg

#include <mmf/common/mmfcontrollerframework.h>

using namespace multimedia;

CBalanceEffect::CBalanceEffect()

: iBalance(KMMFBalanceCenter)

	{

    // No Impl	

	}

CBalanceEffect::~CBalanceEffect()

	{

    // No Impl	

	}

TInt CBalanceEffect::PostConstructor()

    {

    TRAPD( status, CEffectControlBase::ConstructL( KUidInterfaceMMFAudioPlayDevice ) );

    return status;

    }

// From MControl begins

TInt CBalanceEffect::AddObserver( MControlObserver& /*aObserver*/ )

    {

    return KErrNotSupported;

    }

TInt CBalanceEffect::RemoveObserver( MControlObserver& /*aObserver*/ )

    {

    return KErrNotSupported;

    }

TUid CBalanceEffect::Type()

    {

    return KBalanceEffectControl;

    }

TControlType CBalanceEffect::ControlType()

    {

	return EEffectControl;

    }

// From MControl ends

// From MEffectControl begins

TInt CBalanceEffect::Apply()

    {

        iEnabled = true;

        return DoApply();

    }

// From MEffectControl ends

// From MBalanceEffect begins

TInt CBalanceEffect::DoApply()

    {

    TInt error(KErrNone);    

    TMMFMessageDestination msgDest( KUidInterfaceMMFAudioPlayDevice );

    TMMFMessageDestinationPckg msgDestPckg( msgDest );

	TPckgBuf<TMMFAudioConfig> configPackage;

	configPackage().iBalance = iBalance;

	error =  CEffectControlBase::CustomCommandSync( msgDestPckg,

			                                      EMMFAudioPlayDeviceSetBalance,

                                                  configPackage,

                                                  KNullDesC8);

    return error;

    }

// From MBalanceEffectt begins

TInt CBalanceEffect::SetBalance( TInt& aBalance )

    {

    iBalance = aBalance;

    return KErrNone;

    }

TInt CBalanceEffect::GetBalance( TInt& aBalance )

    {

    aBalance = iBalance;

    return KErrNone;

    }

// From CEffectControlerBase begins

void CBalanceEffect::Event ( TEffectControlEvent aEvent)

	{

	TMMFMessageDestination msgDest ( KUidInterfaceMMFAudioPlayDevice );

	TMMFMessageDestinationPckg msgDestPckg ( msgDest );

	TPckgBuf<TMMFAudioConfig> configPackage;

	 // Controller loaded with ECIBuilderCreated

	if ( aEvent == ECIBuilderCreated )

		{

		if ( iBalance == KMMFBalanceCenter)

			{

			TInt error = CEffectControlBase::CustomCommandSync(msgDestPckg,

					                                          EMMFAudioPlayDeviceGetBalance,

					                                          KNullDesC8,

					                                          KNullDesC8,

					                                          configPackage);

			if ( !error )

				{

				iBalance = configPackage().iBalance;				

				}

			}		

		}

	if ( iEnabled && iBalance != KMMFBalanceCenter)

		{		

		DoApply();

		}	

	}

// From CEffectControlBase ends

// End of file