1 /*

     2 * Copyright (c) 2005 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:  Manipulates the settings of an audio effect reverb source.

    15 *

    16 */

    17 

    18 

    19 #ifndef CAMMSEMCREVERBSOURCECONTROL_H

    20 #define CAMMSEMCREVERBSOURCECONTROL_H

    21 

    22 //  INCLUDES

    23 #include <e32base.h>

    24 #include <RoomLevelControl.h>

    25 #include "cammsbasereverbsourcecontrol.h"

    26 #include <cmmaemcaudioplayer.h>

    27 // CONSTANTS

    28 _LIT(KAMMSEMCReverbSourceControl, "ReverbSourceControl");

    29 

    30 using multimedia::MRoomLevelControl;

    31 using multimedia::KRoomLevelEffectControl;

    32 

    33 // FORWARD DECLARATIONS

    34 class CAMMSBaseReverbControl;

    35 

    36 // CLASS DECLARATION

    37 

    38 /**

    39 *

    40 *  Controls for the Reverb Source effect.

    41 *  This class delegates Reverb Source effect method calls to CRoomLevel.

    42 *

    43 *

    44 *  @since 5.1

    45 */

    46 NONSHARABLE_CLASS(CAMMSEMCReverbSourceControl): public CAMMSBaseReverbSourceControl  /*CAMMSControl*/

    47 {

    48 public:  // Constructors and destructor

    49 

    50     /**

    51     * Two-phased constructor.

    52     * @param aPlayer Player that has this control.

    53     * @param aReverbControl Reverb control belonging to aPlayer.

    54     */

    55     static CAMMSEMCReverbSourceControl* NewLC(CMMAPlayer* aPlayer,

    56     CAMMSBaseReverbControl* aBaseReverbControl);

    57 

    58     /**

    59     * Destructor.

    60     */

    61     ~CAMMSEMCReverbSourceControl();

    62 

    63 public:  // New functions

    64 

    65     /**

    66     * Sets the object specific level for the reverberant sound.

    67     * The default value is 0 meaning the natural room gain (set by

    68     * ReverbControl's presets).

    69     *

    70     * @param aLevel The new level of the reverberation in millibels.

    71     *

    72     * @par Leaving:

    73     * @li \c KErrArgument - \a aLevel is greater than 0

    74     */

    75     void SetRoomLevelL(TInt aLevel);

    76 

    77 public: // Functions from base classes

    78 

    79     const TDesC& ClassName() const;

    80 

    81     /**

    82     * Prepares the Control.

    83     */

    84     void PrepareControlL();

    85 

    86     /**

    87     * Deallocates the Control.

    88     */

    89     void DeallocateControl();

    90 

    91 private:

    92     /**

    93     * C++ constructor.

    94     * @param aPlayer Player that has this control.

    95     * @param aReverbControl Reverb control belonging to aPlayer.

    96     */

    97     CAMMSEMCReverbSourceControl(CMMAPlayer* aPlayer,

    98                                 CAMMSBaseReverbControl* aReverbControl);

    99 

   100 private:  // Data

   101 

   102     /** Reverb control belonging to the player */

   103     CAMMSBaseReverbControl* iBaseReverbControl;

   104 

   105 private:

   106 

   107     CMMAPlayer *iMMAPlayer;

   108     /**

   109     * EMC ReverbSource Control

   110     */

   111 

   112     CMultimediaFactory* iFactory;

   113     MStreamControl* iStreamControl;

   114     MRoomLevelControl* iRoomLevelControl;

   115 };

   116 

   117 #endif // CAMMSEMCREVERBSOURCECONTROL_H

   118 

   119