1 /*

     2 * Copyright (c) 2006-2007 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:  ?Description

    15 *

    16 */

    17 

    18 

    19 #ifndef IRCTRLCOMMAND_H

    20 #define IRCTRLCOMMAND_H

    21 

    22 #include <e32cmn.h>

    23 

    24 #include "ircontrolparams.h"

    25 

    26 /**

    27 * Class is an abstract class which provides interfaces to pass commands

    28 * MCtrlCommand can pass a command and value to the inherited class

    29 * FetchVolume is meant for fetching the volume

    30 * DoAudioFadeOut is to activate Fade out fade in effect

    31 */

    32 class MIRCtrlCmdObserver

    33     {

    34 public:

    35     /**

    36      * Function : MCrtlCmdCommand

    37      * Function is pure virtual function which used to pass commands

    38      * @param TIRControlCommmand represents the commands,which determines 

    39      * what action to be taken

    40      * @param aValue represents any integer value if any, like buffering

    41      * percentage

    42      */

    43     virtual void MCtrlCommand( TIRControlCommmand aCommand, TInt aValue ) = 0;

    44 

    45     /**

    46      * Function : FetchVolume

    47      * Function is pure virtual function which sents Request to get the

    48      * current volume index

    49      * @return volume index

    50      */

    51     virtual TInt FetchVolume() = 0;

    52     

    53     /**

    54      * Function : DoAudioFadeOut

    55      * Function is pure virtual function, it is used to sent request start 

    56      * audio Fade Out

    57      */

    58     virtual void DoAudioFadeOut() = 0;

    59     /**

    60      * Function : PlayerChanged()

    61      * Function is pure virtual function, It notifies the Observer WhenEver

    62 	* Player Changed

    63      * audio Fade Out

    64      */

    65     virtual void PlayerChanged() = 0;

    66     };

    67 

    68 /**

    69 * Class is an abstract class which provides interfaces to fill the buffer

    70 * Request to fill the buffer is made through this interface

    71 */

    72 class MIRStreamFill

    73     {

    74 public:

    75     /**

    76      * Function: FilltheBuffer

    77      * function is pure virtual implementation of and is call to fill

    78      * the buffer 

    79      * @param reference to the buffer to be filled with data

    80      */

    81     virtual void FilltheBuffer(TDes8& aInputBuffer) = 0;

    82     };

    83     

    84 #endif //IRCTRLCOMMAND_H

    85