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:  Sender class for mediator commands

    15 *

    16 */

    17 

    18 

    19 #ifndef C_VTENGMDTRCOMMANDSENDER_H

    20 #define C_VTENGMDTRCOMMANDSENDER_H

    21 

    22 //  INCLUDES

    23 

    24 #include <e32cmn.h>

    25 #include <mediatorcommandinitiator.h>

    26 #include "MVtEngEventObserver.h"

    27 

    28 // FORWARD DECLARATIONS

    29 class CVtEngUtility;

    30 class CVtEngOperation;

    31 class CVtEngMdtrCommandSender;

    32 class TVtMdtrStateIdle;

    33 // CLASS DECLARATION

    34 

    35 /**

    36 *  Mediator command sender 

    37 *

    38 *  @lib videoteleng

    39 *  @since 5.0

    40 */

    41 NONSHARABLE_CLASS( CVtEngMdtrCommandSender ) :

    42     public CBase, 

    43     public MMediatorCommandResponseObserver,

    44     public MVtEngEventObserver

    45     {

    46 public: // constructor and destructors

    47 

    48     /**

    49     * two-phase constructor

    50     */

    51     static CVtEngMdtrCommandSender* NewL( CVtEngUtility& aUtils );

    52     

    53     // Destructor

    54     ~CVtEngMdtrCommandSender();

    55 

    56 public: // new methods

    57 

    58     /**

    59      * Requests telephony to end video call

    60      */

    61     void EndCall();

    62 

    63     /**

    64      * Requests telephony to fallback to voice call 

    65      */

    66     void VoiceFallback();

    67     

    68     /**

    69      * Requests telephony to make voice call 

    70      */

    71     void SwitchToVoiceL( CVtEngOperation& aOperation );

    72     

    73     /**

    74      * Notifies telephony about outgoing audio state change

    75      */

    76     void NotifyOutgoingAudioState( const TBool aMicEnabled );

    77     

    78     void SetSenderState( TVtMdtrStateIdle& aNewState );

    79         

    80     

    81 public: // from MMediatorCommandResponseObserver

    82 

    83         // responses are not handled but required by mediator api

    84     virtual void CommandResponseL( TUid aDomain,

    85            TUid aCategory, 

    86            TInt aCommandId,

    87            TInt aStatus, 

    88            const TDesC8& aData );

    89 

    90 public: // from MVtEngEventObserver

    91 

    92     // handles event accordint to ongoing operation

    93     virtual void HandleVtEventL( TInt aEvent );

    94                          

    95 private: // constructors

    96 

    97     CVtEngMdtrCommandSender( CVtEngUtility& aUtils );

    98     

    99     void ConstructL();

   100 

   101 private:

   102     // for switch to voice operation, signaled when mediator command is issued.

   103     CVtEngOperation* iOperation;

   104         

   105     // for mediator command reception

   106     CMediatorCommandInitiator* iMediatorInitiator;

   107     

   108     CVtEngUtility& iUtils;

   109     

   110     TVtMdtrStateIdle* iSenderState;

   111     };

   112 

   113 #endif // C_VTENGMDTRCOMMANDSENDER_H

   114 

   115 // End of File