os/mm/devsound/a3fdevsound/src/devsoundadaptor/cdevcommoncontrol.h
author sl
Tue, 10 Jun 2014 14:32:02 +0200
changeset 1 260cb5ec6c19
permissions -rw-r--r--
Update contrib.
     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