1 /* 

     2  *

     3  * Copyright (c) <2010> Comarch S.A. and/or its subsidiary(-ies).

     4  * All rights reserved.

     5  * This component and the accompanying materials are made available

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

     7  * which accompanies this distribution, and is available

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

     9  *

    10  * Original Contributors:

    11  * Comarch S.A. - original contribution.

    12  *

    13  * Contributors:

    14  *

    15  * Description:

    16  *

    17  */

    18 

    19 #ifndef HSHFPREMOTEAUDIOVOLUMECONTROL_H

    20 #define HSHFPREMOTEAUDIOVOLUMECONTROL_H

    21 

    22 #include <e32base.h>

    23 

    24 #include "hfpfeaturecommons.h"

    25 

    26 class CHsHFPCommand;

    27 class CHsHFPSettings;

    28 

    29 /**

    30  * @brief Represents "Remote audio volume control" feature

    31  */

    32 class CHsHFPRemoteAudioVolumeControl : public CBase,

    33         public MHsHFPProcedureCommons

    34     {

    35 public:

    36 

    37     /**

    38      * Two-phased constructor.

    39      * 

    40      * @param aObserver feature observer

    41      * 

    42      * @return instance of class

    43      */

    44     static CHsHFPRemoteAudioVolumeControl* NewL(

    45             MHsHFPFeatureProviderObserver* aObserver);

    46 

    47     /**

    48      * Two-phased constructor.

    49      * 

    50      * @param aObserver feature observer

    51      * 

    52      * @return instance of class

    53      */

    54     static CHsHFPRemoteAudioVolumeControl* NewLC(

    55             MHsHFPFeatureProviderObserver* aObserver);

    56 

    57     /**

    58      * Destructor.

    59      */

    60     ~CHsHFPRemoteAudioVolumeControl();

    61 

    62 public:

    63 

    64     /**

    65      * Synchronizes volume levels in AG and HF

    66      * 

    67      * @param aInputCmd input AT command

    68      * @param aOutputCmd response

    69      * 

    70      * @return KErrNone if successful, otherwise one of the system-wide error

    71      * codes

    72      */

    73     TInt VolumeLevelSynchronization(const CHsHFPCommand &aInputCmd,

    74             CHsHFPCommand &aOutputCmd);

    75 

    76     /**

    77      * Resets local setting after client disconnection

    78      */

    79     void Reset();

    80 

    81 public:

    82     //Method inherited from MHsHFPProcedureCommons

    83     TInt ProcessCommand(const CHsHFPCommand &aInputCmd,

    84             CHsHFPCommand &aOutputCmd);

    85 

    86 private:

    87 

    88     /**

    89      * Constructor for performing 1st stage construction

    90      * 

    91      * @param aObserver feature observer

    92      */

    93     CHsHFPRemoteAudioVolumeControl(MHsHFPFeatureProviderObserver* aObserver);

    94 

    95     /**

    96      * Constructor for performing 2nd stage construction

    97      */

    98     void ConstructL();

    99 

   100 private:

   101     /** Pointer to observer */

   102     MHsHFPFeatureProviderObserver* iObserver;

   103 

   104     /** Denotes if volume level synchronization is finished */

   105     TBool iVolumeLevelSynchronized;

   106 

   107     /** Denotes if OK command is expected */

   108     TBool iWaitingForOK;

   109 

   110     /** Denotes if VGM command is expected */

   111     TBool iWaitingForVgmOK;

   112 

   113     /** Profile setting */

   114     CHsHFPSettings* iSettings;

   115     };

   116 

   117 #endif // HSHFPREMOTEAUDIOVOLUMECONTROL_H