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:

    15 *

    16 */

    17 

    18 #ifndef CDEVCOMMONCONTROL_H

    19 #define CDEVCOMMONCONTROL_H

    20 

    21 #include "cdevaudiocontrol.h"

    22 #include <a3f/a3f_trace_utils.h>

    23 #include <a3f/maudioprocessingunitobserver.h>

    24 

    25 /**

    26  * CDevCommonControl

    27  *

    28  * Common functionality required by:

    29  *      CDevPlayControl

    30  *      CDevRecordControl

    31  *      CDevToneControl

    32  *

    33  * @lib mmfdevsoundadaptation.lib

    34  * @since

    35  */

    36 

    37 NONSHARABLE_CLASS(CDevCommonControl) :  public CDevAudioControl,  

    38                                         public MAudioProcessingUnitObserver

    39 	{

    40 public:

    41     CDevCommonControl();

    42     ~CDevCommonControl();

    43     

    44     // from CDevAudioControl

    45     TInt Stop();

    46     TInt Pause();

    47     TInt Resume();

    48     

    49     // from MAudioProcessingUnitObserver

    50     void StateEvent(MAudioStream& aStream, TInt aError, TAudioState aNewState);

    51     void ProcessingUnitError(MAudioProcessingUnit* aInstance, TInt aError);

    52     

    53     // from MAudioContextObserver

    54     void ContextEvent(TUid aEvent, TInt aError);

    55     

    56 protected:

    57     // methods introduced by this class

    58     virtual void FinishWithError(TInt aError) = 0;

    59     

    60 private:

    61     //  Internal functions which together implement CDevCommonControl::ContextEvent

    62     void ContextEventUpdateWithoutStateEventNoError();

    63     void ContextEventUpdateWithoutStateEventButWithError(TInt aError);

    64     void ContextEventUpdateWithStateEventNoError();

    65     void ContextEventStateDevSoundAdaptorLoading(); 

    66     void ContextEventStateDevSoundAdaptorUnloading(); 

    67     void ContextEventStateDevSoundAdaptorStopping();

    68     void ContextEventStateDevSoundAdaptorUninitializing();

    69     void ContextEventStateDevSoundAdaptorBeingPreempted();

    70     void ContextEventPauseResumeSequenceDueToEmptyBuffers(TBool aFlush);

    71     void ContextEventUpdateWithStateEventAndError(TInt aError);

    72     void ContextEventUpdateComplete(TInt aError);

    73     void ContextEventPreEmption(TUid aEvent, TInt aError);

    74     void ContextEventAbort(TInt aError);

    75     void ContextEventErrorStateDevSoundAdaptorActivating(TInt aError);

    76     void ContextEventErrorStateDevSoundAdaptorBeingPreempted();

    77     void ContextEventAsynchronousPlayCompletion(TInt aError);

    78     void ContextEventAsynchronousInitializeComplete(TInt aError);

    79     void ContextEventStopDevSoundNotifications();

    80     

    81 private:

    82     TBool iBeingPreempted;

    83     TBool iPreemptionClash;

    84 	};

    85 

    86 #endif // CDEVCOMMONCONTROL_H

    87 

    88 // end of file