/*

* Copyright (c) 2005 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:  Manipulates the doppler effect of the spectator.

*

*/

// INCLUDE FILES

#include <jdebug.h>

#include "cammsspectatordopplercontrol.h"

// ============================ MEMBER FUNCTIONS ===============================

// -----------------------------------------------------------------------------

// CAMMSSpectatorDopplerControl::NewLC

// Two-phased constructor.

// -----------------------------------------------------------------------------

CAMMSSpectatorDopplerControl* CAMMSSpectatorDopplerControl::NewLC(

    CMMAPlayer* aPlayer)

{

    CAMMSSpectatorDopplerControl* self =

        new(ELeave)CAMMSSpectatorDopplerControl(aPlayer);

    CleanupStack::PushL(self);

    return self;

}

// Destructor

CAMMSSpectatorDopplerControl::~CAMMSSpectatorDopplerControl()

{

    DEBUG("AMMS::CAMMSSpectatorDopplerControl::~CAMMSSpectatorDopplerControl");

    // Perform DeallocateControl, if the state change has not yet performed it.

    DeallocateControl();

    delete(CAudioEffect*)iDopplerEffect;

}

// -----------------------------------------------------------------------------

// CAMMSSpectatorDopplerControl::PrepareControlL

// Function which is called after the correct state is set in Player.

// -----------------------------------------------------------------------------

//

void CAMMSSpectatorDopplerControl::PrepareControlL()

{

    // Perform the action only for the first time, skip if called afterwards

    if (!iDopplerEffect)

    {

        DEBUG("AMMS::CAMMSSpectatorDopplerControl::PrepareControlL");

        CCustomCommandUtility* customCommandUtility =

            CreateCustomCommandUtilityL();

        // Set the base class doppler effect as CListenerDoppler

        // Effect API takes the ownership of customCommandUtility.

        iDopplerEffect = CListenerDoppler::NewL(customCommandUtility);

    }

}

// -----------------------------------------------------------------------------

// CAMMSSpectatorDopplerControl::DeallocateControl

// Function which is called after the correct state is set in Player.

// -----------------------------------------------------------------------------

//

void CAMMSSpectatorDopplerControl::DeallocateControl()

{

    if (iDopplerEffect)

    {

        DEBUG("AMMS::CAMMSSpectatorDopplerControl::DeallocateControl");

        // Doppler for Spectator is always enabled (JSR-234 mandates it)

        // so the disabling is needed here

        TRAPD(err, iDopplerEffect->DisableL());

        if (err != KErrNone)

        {

            // The only even theoritically possible error code here would be

            // KErrAccessDenied which is a result from Effect API calling ApplyL

            // method without having update rights, but since the Effect

            // is already created, that situation can be discarded here.

        }

        // Delete the Effect API class (it deletes CustomCommandUtility)

        // The class that is derived from CDoppler is casted here to the

        // base class CAudioEffect, since CDoppler has the destructor

        // defined as protected, but the derived class and the base class

        // have it defined as public.

        delete(CAudioEffect*)iDopplerEffect;

        iDopplerEffect = NULL;

    }

}

const TDesC& CAMMSSpectatorDopplerControl::ClassName() const

{

    return KAMMSSpectatorDopplerControl;

}

// -----------------------------------------------------------------------------

// CAMMSSpectatorDopplerControl::CAMMSSpectatorDopplerControl

// C++ default constructor can NOT contain any code, that

// might leave.

// -----------------------------------------------------------------------------

CAMMSSpectatorDopplerControl::CAMMSSpectatorDopplerControl(

    CMMAPlayer* aPlayer)

        : CAMMSDopplerControl(aPlayer)

{

}

//  End of File