1 /*

     2 * Copyright (c) 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:  Header of StreamControl interface.

    15 *

    16 */

    17 

    18 

    19 #ifndef STREAMCONTROL_H

    20 #define STREAMCONTROL_H

    21 

    22 #include <e32base.h>

    23 #include <Control.h>

    24 #include <MCustomInterface.h>

    25 

    26 namespace multimedia

    27     {

    28     

    29     // Forward declaration

    30     class MSourceControl;

    31     class MSinkControl;

    32     class MEffectControl;

    33     

    34     // Uid identifying Stream Control

    35     const TUid KStreamControl = {0x10207B44};

    36     

    37     // Class declaration

    38     class MStreamControl : public MControl, public MCustomInterface

    39         {

    40         public:

    41             enum TStreamState

    42                 {

    43                 CLOSED,

    44                 INITIALIZED,

    45                 PRIMED,

    46                 EXECUTING,

    47                 BUFFERING,

    48                 PAUSED

    49                 };

    50 

    51         public:

    52             // Config msgs

    53             virtual TInt AddSource( MSourceControl& aSource ) = 0;

    54             virtual TInt RemoveSource( MSourceControl& aSource ) = 0;

    55             virtual TInt AddSink( MSinkControl& aSink ) = 0;

    56             virtual TInt RemoveSink( MSinkControl& aSink ) = 0;

    57             virtual TInt AddEffect( MEffectControl& aEffect ) = 0;

    58             virtual TInt RemoveEffect( MEffectControl& aEffect ) = 0;

    59             virtual TInt SetPosition( TInt64& aPos ) = 0;

    60             virtual TInt SetPriority( TInt aPriority, TInt aPreference ) = 0;

    61             

    62             // Query msgs

    63             virtual TInt GetDuration( TInt64& aDuration ) = 0;

    64             virtual TInt GetPosition( TInt64& aPos) = 0;

    65             virtual TInt GetSeekingSupport( TBool& aFlag ) = 0;

    66             virtual TInt GetRandomSeekingSupport( TBool& aFlag ) = 0;

    67             virtual TStreamState GetState() = 0;

    68             virtual TAny* CustomInterface( TUid aCIUid ) = 0;

    69             

    70             // Control msg

    71             virtual TInt Open() = 0;

    72             virtual TInt Prime() = 0;

    73             virtual TInt Start() = 0;

    74             virtual TInt Pause() = 0;

    75             virtual TInt Stop() = 0;

    76             virtual TInt Close() = 0;

    77             

    78         };

    79     } // namespace multimedia

    80 

    81 #endif // STREAMCONTROL_H

    82 

    83 // End of file