1 /*

     2 * Copyright (c) 2009 Nokia Corporation and/or its subsidiary(-ies).

     3 * All rights reserved.

     4 * This component and the accompanying materials are made available

     5 * under the terms of "Eclipse Public License v1.0"

     6 * which accompanies this distribution, and is available

     7 * at the URL "http://www.eclipse.org/legal/epl-v10.html".

     8 *

     9 * Initial Contributors:

    10 * Nokia Corporation - initial contribution.

    11 *

    12 * Contributors:

    13 *

    14 * Description: Music Player engine.

    15 *

    16 */

    17 

    18 #ifndef MPENGINE_H

    19 #define MPENGINE_H

    20 

    21 #include <QObject>

    22 #include "mpmpxcommondefs.h"

    23 

    24 class QStringList;

    25 class QTranslator;

    26 class HbNotificationDialog;

    27 class MpMpxFrameworkWrapper;

    28 class MpSongScanner;

    29 class MpMediaKeyHandler;

    30 

    31 #if defined(BUILD_MPENGINE_LIB)

    32 #define MPENGINE_EXPORT Q_DECL_EXPORT

    33 #else

    34 #define MPENGINE_EXPORT Q_DECL_IMPORT

    35 #endif

    36 

    37 

    38 class MPENGINE_EXPORT MpEngine : public QObject

    39 {

    40     Q_OBJECT

    41 

    42 private:

    43 

    44     enum UsbBlockingState {

    45         USB_NotConnected,          // Not connected

    46         USB_Connected,             // Connected in MTP mode but not synchronizing

    47         USB_Synchronizing          // Connected in MassStorage mode or MTP mode and synchronizing

    48     };

    49 

    50 private:

    51     explicit MpEngine();

    52 

    53 public:

    54 

    55     virtual ~MpEngine();

    56     static MpEngine *instance();

    57 

    58     void refreshLibrary();

    59     bool verifyUsbBlocking( bool showMessage = false );

    60 

    61 signals:

    62 

    63     void libraryAboutToRefresh();

    64     void libraryRefreshed();

    65     void usbBlocked( bool blocked );

    66     void exitApplication();

    67 

    68 public slots:

    69 

    70     void handleScanStarted();

    71     void handleScanEnded( int count, int error );

    72     void handleDiskEvent( MpxDiskEvents event );

    73     void handleUsbEvent( MpxUsbEvents event );

    74 

    75 private:

    76 

    77     void handleUsbMassStorageStartEvent();

    78     void handleUsbMassStorageEndEvent();

    79     void handleUsbMtpStartEvent();

    80     void handleUsbMtpEndEvent();

    81     void handleUsbMtpNotActive();

    82 

    83     void changeUsbBlockingState( UsbBlockingState state );

    84 

    85 private:

    86 

    87     Q_DISABLE_COPY( MpEngine )

    88 

    89     MpMpxFrameworkWrapper       *mMpxWrapper;       // Own

    90     MpSongScanner               *mSongScanner;      // Own

    91     MpMediaKeyHandler           *mMediaKeyHandler;  // Own

    92 

    93     HbNotificationDialog        *mUsbBlockingNote;  // Own

    94     QTranslator                 *mMpTranslator;     // Own

    95 

    96     UsbBlockingState            mUsbBlockingState;

    97     UsbBlockingState            mPreviousUsbState;

    98 

    99 };

   100 

   101 #endif // MPENGINE_H