/*

* Copyright (c) 2005 Nokia Corporation and/or its subsidiary(-ies).

* All rights reserved.

* This component and the accompanying materials are made available

* under the terms of "Eclipse Public License v1.0"

* which accompanies this distribution, and is available

* at the URL "http://www.eclipse.org/legal/epl-v10.html".

*

* Initial Contributors:

* Nokia Corporation - initial contribution.

*

* Contributors:

*

* Description:  Manipulates the settings of an audio effect called reverb.

*

*/

#ifndef CAMMSEMCREVERBCONTROL_H

#define CAMMSEMCREVERBCONTROL_H

//  INCLUDES

#include <e32base.h>

#include <EnvironmentalReverbBase.h>

#include <EnvironmentalReverbUtility.h>

#include "cammseffectcontrol.h"

#include "cammseffectcontrolgroup.h"

//EMC

#include <EffectControl.h>

#include <ReverbControl.h>

#include <cammsbasereverbcontrol.h>

#include <cmmaemcaudioplayer.h>

//Utility for getting EnvironmentalReverb

#include "cammsemcreverbenvironmentalpresetutility.h"

using multimedia :: KReverbEffectControl;

using multimedia :: MReverbControl;

// CONSTANTS

_LIT(KAMMSEMCReverbControl, "ReverbControl");

_LIT(KAMMSEMCDefaultReverbPreset, "smallroom");

// CLASS DECLARATION

/**

*

*  Controls for the Reverb effect.

*  This class delegates Reverb effect method calls to CReverb.

*

*

*  @since 5.1

*/

NONSHARABLE_CLASS(CAMMSEMCReverbControl): public CAMMSBaseReverbControl

{

public:  // Constructors and destructor

    /**

    * Two-phased constructor.

    * @param aPlayer Player that has this control.

    */

    static CAMMSEMCReverbControl* NewLC(CMMAPlayer* aPlayer);

    /**

    * Destructor.

    */

    ~CAMMSEMCReverbControl();

public:  // New functions

    /**

    * Sets the gain level of the reverberation. The value defines what is

    * the relative level of the first reflections compared to the sound

    * source without possible distance attenuations, directivities or

    * obstructions taken into account.

    *

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

    *

    * @return The value that was actually set.

    *

    * @par Leaving:

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

    */

    TInt SetReverbLevelL(TInt aLevel);

    /**

    * Sets the reverberation time of the reverb. The reverberation time is

    * the time taken for the reverberant sound to attenuate by 60 dB from

    * its initial level. Typical values are in the range from 100 to 20000

    * milliseconds.

    * The implementation might not support long reverberation times.

    * Therefore, the actual time used might be shorter than the time

    * specified with this method.

    *

    * @param aTime The new reverberation time in milliseconds.

    *

    * @return The value that was actually set.

    *

    * @par Leaving:

    * @li \c KErrArgument - \a aTime is negative.

    * From Java API more leave codes are:

    * - java.lang.IllegalArgumentException - when the given time is

    * negative

    * - javax.microedition.media.MediaException - when the changing of the

    * reverb time is not supported

    */

    void SetReverbTimeL(TInt aTime);

    /**

    * Gets the gain level of the reverberation.

    *

    * @return The level of the reverberation in millibels.

    */

    TInt ReverbLevel();

    /**

    * Gets the reverberation time.

    *

    * @return The time of the reverberation in milliseconds.

    */

    TInt ReverbTime();

    /**

    * Gets the minimum level of the reverberation.

    *

    * @return The minimum level of the reverberation in millibels.

    */

    TInt MinReverbLevel();

    /**

    * Gets the maximum level of the reverberation.

    *

    * @return The maximum level of the reverberation in millibels.

    */

    TInt MaxReverbLevel();

public: // Functions from base classes

    /**

    * Sets the effect according to the given preset.

    *

    * @param aPreset The new preset that will be taken into use.

    *

    * @par Leaving:

    * @li \c KErrArgument - \a aPreset is not available or it is null.

    */

    void SetPresetL(const TDesC& aPreset);

    /**

    * Gets the available preset names.

    *

    * @return The names of all the available preset modes.

    */

    const CDesCArray& PresetNamesL();

    /**

    * Gets the current preset.

    *

    * @return The preset that is set at the moment. If none of the presets

    * is set, null will be returned.

    */

    const TDesC& PresetL();

    /**

    * Enables/disables the effect.

    *

    * @param aEnabled The boolean value, true=enabled, false=disabled.

    *

    * @par Leaving:

    * From Java API the leave codes are:

    * - java.lang.IllegalStateException - if the effect cannot be enabled

    * in this state of the player.

    * - javax.microedition.media.MediaException - if enabling is not

    * supported (with the scope set).

    */

    void SetEnabledL(TBool aEnable);

    const TDesC& ClassName() const;

    /**

    * Prepares the Control.

    */

    void PrepareControlL();

    /**

    * Deallocates the Control.

    */

    void DeallocateControl();

public:  // Functions needed by reverb source control

    /**

    * Returns the Reverb Control.

    * CAMMSEMCReverbSourceControl has to use the same instance.

    * The function creates the instance if they do not exist yet.

    */

    MReverbControl * GetReverbControlL();

    /**

     * Returns the Current Preset Index.

     * CAMMSEMCReverbSourceControl has to use it.

     */

    TInt CurrentPresetIndex();

public: // override the virtual functions from base class CAMMSEffectControl

    void SetEnforcedL(TBool aEnforced);

    TBool Enforced();

    void SetScopeL(TInt aScope);

    TInt Scope();

    void ApplySettingsL();

private:

    /**

    * C++ constructor.

    * @param aPlayer Player that has this control.

    */

    CAMMSEMCReverbControl(CMMAPlayer* aPlayer);

    /**

    * By default Symbian 2nd phase constructor is private.

    */

    void ConstructL();

private:  // Data

    /* Array for querying the preset names, owned */

    CDesCArray* iPresetNames;

    TBuf<KAMMSMaxPresetNameLength> iPresetName;

    /* Index of the current preset */

    TInt iCurrentPreset;

    /* Reverb utility to get Environmental Reverb*/

    CAMMSEMCReverbEnvironmentalPresetUtility *iAMMSEMCReverbEnvironmentalPresetUtility;

private:

    CMMAPlayer *iMMAPlayer;

    /**

    * EMC Reverb Control

    */

    CMultimediaFactory* iFactory;

    MStreamControl* iStreamControl;

    MReverbControl *iMReverbControl;

    TInt iEnvReverbLevel;

};

#endif // CAMMSEMCREVERBCONTROL_H