1 /*

     2 * Copyright (c) 2008 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:  Observer of accessory states.

    15 *

    16 */

    17 

    18 

    19 #ifndef CFMRADIOACCESSORYOBSERVER_H

    20 #define CFMRADIOACCESSORYOBSERVER_H

    21 

    22 #include <AccessoryServer.h>

    23 #include <AccessoryMode.h>

    24 #include <AccPolAccessoryMode.h>

    25 

    26 class MFMRadioHeadsetEventObserver;

    27 

    28 /**

    29  *  Observer of accessory states.  

    30  *

    31  *  Instance of this class observes notifications of headset state changes. 

    32  *  In its turn it sends notifications to its observer of those changes.

    33  *

    34  */

    35 class CFMRadioAccessoryObserver : public CActive

    36     {

    37 public:  

    38 

    39     /**

    40      * C++ default constructor.

    41      */

    42     CFMRadioAccessoryObserver();

    43 

    44     /**

    45      * Static constructor.

    46      */

    47     static CFMRadioAccessoryObserver* NewL();

    48     

    49     /**

    50      * Destructor.

    51      */

    52     virtual ~CFMRadioAccessoryObserver();

    53 

    54     /**

    55      * Sets observer. The observer will be notified when headset has been 

    56      * pressed or headset is connected/disconnected.

    57       *

    58      * @param aObserver Observer

    59      */

    60     void SetObserver( MFMRadioHeadsetEventObserver* aObserver );

    61 

    62     /**

    63      * Returns accessory connection state.

    64      *

    65      * @return <code>ETrue </code> if accessory is connected, 

    66      * <code>EFalse</code> otherwise

    67      */

    68     TBool IsHeadsetAccessoryConnected() const;

    69     

    70     // from base class CActive

    71     /**

    72      * From CActive

    73      *

    74      * @see CActive::RunL()

    75      */    

    76     void RunL();

    77 

    78     /**

    79      * From CActive

    80      *

    81      * @see CActive::DoCancel()

    82      */        

    83     void DoCancel();

    84     

    85 protected:  

    86 

    87 private: 

    88 

    89     /**

    90      * By default Symbian 2nd phase constructor is private.

    91      */

    92     void ConstructL();

    93 

    94 public:

    95 

    96 protected:

    97 

    98     /** 

    99      * Instance that gets notifications of the headset state changes 

   100      */

   101     MFMRadioHeadsetEventObserver* iObserver;

   102 

   103 private:    // Data

   104 

   105     /** 

   106      * Session for The Accessory Server. 

   107      */

   108     RAccessoryServer iAccessoryServer;

   109     

   110     /** 

   111      * Accessory Mode sub-session 

   112      */            

   113     RAccessoryMode          iAccessoryModeSession;

   114     

   115     

   116     /** 

   117      * Accessory Mode structure, with active audio information. 

   118      */

   119     TAccPolAccessoryMode    iAccPolAccessoryMode;

   120     TAccPolAccessoryMode    iPrevAccMode;

   121     };

   122 

   123 #endif      // CFMRADIOACCESSORYOBSERVER_H

   124             

   125