1 /*

     2 * Copyright (c) 2002 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:  This class implements RateControl for HTTP stream audio player.

    15 *

    16 */

    17 

    18 

    19 #ifndef CMMAAUDIOSTREAMRATECONTROL_H

    20 #define CMMAAUDIOSTREAMRATECONTROL_H

    21 

    22 //  INTERNAL INCLUDES

    23 #include "cmmaratecontrol.h" // base class

    24 #include "cmmaaudiostreamplayer.h"

    25 

    26 //  CLASS DECLARATION

    27 /**

    28 *   This class implements RateControl for http stream audio player.

    29 *

    30 */

    31 NONSHARABLE_CLASS(CMMAAudioStreamRateControl): public CMMARateControl,

    32         public MMMAPlayerStateListener

    33 {

    34 public:

    35 

    36     static CMMAAudioStreamRateControl* NewL(

    37         CMMAAudioStreamPlayer* aPlayer);

    38 

    39     /**

    40      * Destructor.

    41      */

    42     ~CMMAAudioStreamRateControl();

    43 

    44 protected:

    45 

    46     /**

    47      * Constructor.

    48      */

    49     CMMAAudioStreamRateControl(CMMAAudioStreamPlayer* aPlayer);

    50 

    51     void ConstructL();

    52 

    53 public: // from MMMAPlayerStateListener

    54     virtual void StateChanged(TInt aState);

    55 

    56 public: // New methods

    57     /**

    58      * @param aRate Rate to set in "milli-percentage"..

    59      * @return Actual rate set.

    60      */

    61     virtual TInt SetRateL(TInt aRate);

    62 

    63     /**

    64      * @return The current playback rate in "milli-percentage".

    65      */

    66     virtual TInt RateL();

    67 

    68 

    69 private: // Member data

    70 

    71     /**

    72      * Used to obtain RMMFController reference to stop/start

    73      * playback.

    74      */

    75     CMMAAudioStreamPlayer* iPlayer;

    76 

    77     /**

    78      * Hold current rate value.

    79      */

    80     TInt iCurrentRate;

    81 

    82 };

    83 

    84 #endif // CMMAAUDIOSTREAMRATECONTROL_H