1 /*

     2 * Copyright (c) 2002-2007 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:  This class is used for setting volume to audio player

    15 *

    16 */

    17 

    18 

    19 #include <jdebug.h>

    20 #include "cmmaaudiovolumecontrol.h"

    21 #include "cmmaaudioplayer.h"

    22 

    23 

    24 CMMAAudioVolumeControl::CMMAAudioVolumeControl(CMMAAudioPlayer* aPlayer)

    25         : CMMAVolumeControl(aPlayer),

    26         iAudioPlayDeviceCommands(aPlayer->Controller())

    27 {

    28 }

    29 

    30 void CMMAAudioVolumeControl::ConstructL()

    31 {

    32     ConstructBaseL();

    33 }

    34 

    35 EXPORT_C CMMAAudioVolumeControl* CMMAAudioVolumeControl::NewL(CMMAAudioPlayer* aPlayer)

    36 {

    37     CMMAAudioVolumeControl* self = new(ELeave)CMMAAudioVolumeControl(aPlayer);

    38     CleanupStack::PushL(self);

    39     self->ConstructL();

    40     CleanupStack::Pop();

    41     return self;

    42 }

    43 

    44 

    45 void CMMAAudioVolumeControl::DoSetLevelL(TInt aLevel)

    46 {

    47     TInt maxVolume = 0;

    48     User::LeaveIfError(iAudioPlayDeviceCommands.GetMaxVolume(maxVolume));

    49     // aLevel is the desired volume in range 0..100

    50     User::LeaveIfError(iAudioPlayDeviceCommands.SetVolume(

    51                            aLevel * maxVolume / KMMAVolumeMaxLevel));

    52 }

    53 

    54 TInt CMMAAudioVolumeControl::DoGetLevelL()

    55 {

    56     TInt maxVolume = 0;

    57     User::LeaveIfError(iAudioPlayDeviceCommands.GetMaxVolume(maxVolume));

    58     __ASSERT_DEBUG(maxVolume != 0, User::Invariant());

    59     TInt volume = 0;

    60     User::LeaveIfError(iAudioPlayDeviceCommands.GetVolume(volume));

    61     // result is in range 0..100

    62     return (volume * KMMAVolumeMaxLevel / maxVolume);

    63 }

    64 

    65 //  END OF FILE