/*

* Copyright (c) 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:

*

*/

// System includes

#include <QTimer>

// User includes

#include "radioscannerengine.h"

#include "radioscannerengine_p.h"

#include "radiouiengine.h"

#include "radiouiengine_p.h"

#include "radioenginewrapper.h"

#include "radiostationhandlerif.h"

#include "radiostationmodel.h"

#include "radiostation.h"

/*!

 *

 */

RadioScannerEngine::RadioScannerEngine( RadioUiEnginePrivate& uiEngine ) :

    QObject( &uiEngine.api() ),

    d_ptr( new RadioScannerEnginePrivate( this, uiEngine ) )

{

}

/*!

 *

 */

RadioScannerEngine::~RadioScannerEngine()

{

    cancel();

    Q_D( RadioScannerEngine );

    if ( d->mMutedByScanner ) {

        d->mUiEngine.api().toggleMute();

    }

    delete d_ptr;

}

/*!

 * Starts the scanning from minimum frequency

 */

void RadioScannerEngine::startScanning()

{

    cancel();

    Q_D( RadioScannerEngine );

    if ( !d->mUiEngine.api().isMuted() ) {

        d->mUiEngine.api().toggleMute();

        d->mMutedByScanner = true;

    }

    d->mUiEngine.api().model().stationHandlerIf().removeLocalStations();

    d->mLastFoundFrequency = d->mUiEngine.api().minFrequency();

    d->mUiEngine.wrapper().tuneFrequency( d->mLastFoundFrequency, TuneReason::StationScanInitialization );

}

/*!

 * Continues the scanning upwards from current frequency

 */

void RadioScannerEngine::continueScanning()

{

    Q_D( RadioScannerEngine );

    d->mUiEngine.wrapper().startSeeking( Seeking::Up, TuneReason::StationScan );

}

/*!

 * Cancels the scanning process

 */

void RadioScannerEngine::cancel()

{

    Q_D( RadioScannerEngine );

    if ( d->mUiEngine.api().isScanning() ) {

        d->mUiEngine.cancelSeeking();

    }

    if ( d->mMutedByScanner ) {

        d->mUiEngine.api().toggleMute();

        d->mMutedByScanner = false;

    }

}

/*!

 * Adds a new station that was found

 */

void RadioScannerEngine::addScannedFrequency( const uint frequency )

{

    Q_D( RadioScannerEngine );

    if ( frequency > d->mLastFoundFrequency ) {

        // Station has been found normally

        d->mLastFoundFrequency = frequency;

        d->addFrequencyAndReport( frequency );

    } else if ( frequency == d->mUiEngine.api().minFrequency() ) {

        // Special case. A station has been found in the mininmum frequency

        d->addFrequencyAndReport( frequency );

    } else {

        // Seeking looped around the frequency band. Send invalid station as indicator that the scanning should stop

        emit stationFound( RadioStation() );

    }

}

/*!

 *

 */

void RadioScannerEngine::emitStationFound( const RadioStation& station )

{

    emit stationFound( station );

}