1 /*

     2 * Copyright (c) 2005-2006 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 CIRACCESSORYOBSERVER_H

    20 #define CIRACCESSORYOBSERVER_H

    21 

    22 #include <accessoryserver.h>

    23 #include <accessorymode.h>

    24 #include <accpolaccessorymode.h>

    25 

    26 class MIRHeadsetEventObserver;

    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 NONSHARABLE_CLASS( CIRAccessoryObserver ): public CActive

    36     {

    37 public:  

    38 

    39     /**

    40      * C++ default constructor.

    41      */

    42     CIRAccessoryObserver();

    43 

    44     /**

    45      * Static constructor.

    46      *

    47      * @param aAccessoryServer Existing session for The Accessory Server.

    48      */

    49     static CIRAccessoryObserver* NewL();

    50     

    51     /**

    52      * Destructor.

    53      */

    54     virtual ~CIRAccessoryObserver();

    55 

    56     /**

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

    58      * pressed or headset is connected/disconnected.

    59       *

    60      * @param aObserver Observer

    61      */

    62     void SetObserver(MIRHeadsetEventObserver* aObserver);

    63 

    64     /**

    65      * Returns accessory connection state.

    66      *

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

    68      * <code>EFalse</code> otherwise

    69      */

    70     TBool IsHeadsetConnected() const;

    71     

    72     // from base class CActive

    73     /**

    74      * From CActive

    75      *

    76      * @see CActive::RunL()

    77      */    

    78     void RunL();

    79 

    80     /**

    81      * From CActive

    82      *

    83      * @see CActive::DoCancel()

    84      */        

    85     void DoCancel();

    86     

    87 protected:  

    88 

    89 private: 

    90 

    91     /**

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

    93      * 

    94      * @param aAccessoryServer Existing session for The Accessory Server.

    95      */

    96     void ConstructL();

    97 

    98 public:

    99 

   100 protected:

   101 

   102     /** 

   103      * Instance that gets notifications of the headset state changes 

   104      */

   105     MIRHeadsetEventObserver* iObserver;

   106 

   107 private:    // Data

   108 

   109     /** 

   110      * Session for The Accessory Server. 

   111      */

   112     RAccessoryServer iAccessoryServer;

   113     

   114     /** 

   115      * Accessory Mode sub-session 

   116      */            

   117     RAccessoryMode          iAccessoryModeSession;

   118     

   119     

   120     /** 

   121      * Accessory Mode structure, with active audio information. 

   122      */

   123     TAccPolAccessoryMode    iAccPolAccessoryMode;

   124     };

   125 

   126 #endif      // CIRACCESSORYOBSERVER_H

   127             

   128