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/*
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* Copyright (c) 2006 Nokia Corporation and/or its subsidiary(-ies).
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* All rights reserved.
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* This component and the accompanying materials are made available
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* under the terms of "Eclipse Public License v1.0"
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* which accompanies this distribution, and is available
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* at the URL "http://www.eclipse.org/legal/epl-v10.html".
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*
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* Initial Contributors:
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* Nokia Corporation - initial contribution.
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*
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* Contributors:
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*
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* Description: This is the definition of the Audio Equalizer effect class.
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*
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*/
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#ifndef CAUDIOEQUALIZER_H
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#define CAUDIOEQUALIZER_H
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// INCLUDES
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#include <e32base.h>
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#include <AudioEffectBase.h>
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#include <AudioEqualizerData.h>
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#include <MCustomInterface.h>
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const TUid KUidAudioEqualizerEffect = {0x1020382A};
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// FORWARD DELCARATION
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class CMdaAudioConvertUtility;
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class CMdaAudioPlayerUtility;
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class CMdaAudioRecorderUtility;
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class CMdaAudioInputStream;
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class CMdaAudioOutputStream;
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class CMdaAudioToneUtility;
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class CCustomCommandUtility;
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class CCustomInterfaceUtility;
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class CMMFDevSound;
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class CMidiClientUtility;
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class CDrmPlayerUtility;
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class CVideoPlayerUtility;
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// CLASS DECLARATION
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/**
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* This is the Equalizer effect class for managing audio equalizer settings.
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*
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* @lib AudioEqualizerEffect.lib
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* @since 3.0
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*/
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class CAudioEqualizer : public CAudioEffect
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{
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public: //New Functions
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/**
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* Factory function for creating the audio equalizer object.
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* @since 3.0
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* @return pointer to CAudioEqualizer object
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*/
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IMPORT_C static CAudioEqualizer* NewL();
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/**
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* Factory function for creating the audio equalizer object.
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* @since 3.0
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* @param aUtility A reference to a convert utility
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* @return pointer to CAudioEqualizer object
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*/
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IMPORT_C static CAudioEqualizer* NewL( CMdaAudioConvertUtility& aUtility );
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/**
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* Factory function for creating the audio equalizer object.
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* @since 3.0
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* @param aUtility A reference to an audio input stream utility
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* @return pointer to CAudioEqualizer object
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*/
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IMPORT_C static CAudioEqualizer* NewL( CMdaAudioInputStream& aUtility );
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/**
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* Factory function for creating the audio equalizer object.
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* @since 3.0
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* @param aUtility A reference to an audio output stream utility
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* @return pointer to CAudioEqualizer object
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*/
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IMPORT_C static CAudioEqualizer* NewL( CMdaAudioOutputStream& aUtility );
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/**
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* Factory function for creating the audio equalizer object.
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* @since 3.0
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* @param aUtility A reference to an audio player utility
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* @return pointer to CAudioEqualizer object
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*/
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IMPORT_C static CAudioEqualizer* NewL( CMdaAudioPlayerUtility& aUtility );
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/**
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* Factory function for creating the audio equalizer object.
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* @since 3.0
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* @param aUtility A reference to an audio record utility
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* @param aRecordStream ETrue if the effect is to be applied to the recording,
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* EFalse if the effect is to be applied only to the playback
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* @return pointer to CAudioEqualizer object
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*/
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IMPORT_C static CAudioEqualizer* NewL( CMdaAudioRecorderUtility& aUtility, TBool aRecordStream );
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/**
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* Factory function for creating the audio equalizer object.
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* @since 3.0
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* @param aUtility A reference to an audio tone utility
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* @return pointer to CAudioEqualizer object
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*/
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IMPORT_C static CAudioEqualizer* NewL( CMdaAudioToneUtility& aUtility );
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/**
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* Factory function for creating the audio equalizer object.
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* @since 3.0
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* @param aDevSound A reference to a DevSound instance
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* @return pointer to CAudioEqualizer object
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*/
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IMPORT_C static CAudioEqualizer* NewL( CMMFDevSound& aDevSound );
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/**
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* Factory function for creating the audio equalizer object.
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* @since 3.0
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* @param aUtility A reference to a custom command utility
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* @return pointer to CAudioEqualizer object
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*/
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IMPORT_C static CAudioEqualizer* NewL( CCustomCommandUtility* aUtility );
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/**
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* Factory function for creating the audio equalizer object.
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* @since 3.0
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* @param aCustomInterface A reference to a custom interface
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* @return pointer to CAudioEqualizer object
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*/
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IMPORT_C static CAudioEqualizer* NewL( MCustomInterface& aCustomInterface );
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/**
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* Factory function for creating the audio equalizer object.
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* @since 3.0
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* @param CMidiClientUtility A reference to a CMidiClientUtility object
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* @return pointer to CAudioEqualizer object
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*/
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IMPORT_C static CAudioEqualizer* NewL( CMidiClientUtility& aUtility );
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/**
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* Factory function for creating the audio equalizer object.
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* @since 3.0
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* @param CDrmPlayerUtility A reference to a CDrmPlayerUtility object
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* @return pointer to CAudioEqualizer object
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*/
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IMPORT_C static CAudioEqualizer* NewL( CDrmPlayerUtility& aUtility );
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/**
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* Factory function for creating the audio equalizer object.
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* @since 3.2
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* @param CVideoPlayerUtility A reference to a CVideoPlayerUtility object
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* @return pointer to CAudioEqualizer object
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*/
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IMPORT_C static CAudioEqualizer* NewL( CVideoPlayerUtility& aUtility );
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/**
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*
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* Destructor
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*/
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IMPORT_C virtual ~CAudioEqualizer();
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/**
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* Get the band level in mB for the specified band
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* @since 3.0
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* @param aBand Frequency Band
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* @return Returns the band level in mB for the specified band
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*/
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IMPORT_C TInt32 BandLevel( TUint8 aBand ) const;
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/**
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* Get the band width in Hz for the specified band.
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* @since 3.0
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* @param aBand Frequency Band
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* @return The band width in Hz for the specified band
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*/
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IMPORT_C TInt32 BandWidth( TUint8 aBand ) const;
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/**
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* Get the center frequency in Hz for a given band
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* @since 3.0
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* @param aBand Frequency Band
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* @return The center frequency in Hz for a given band.
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*/
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IMPORT_C TInt32 CenterFrequency( TUint8 aBand ) const;
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/**
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* Get the cross-over frequency between the given frequency band (aBand) and the next band
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* @since 3.0
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* @param aBand Frequency Band
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* @return Crossover frequency.
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*/
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IMPORT_C TInt32 CrossoverFrequency( TUint8 aBand ) const;
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/**
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* Get the dB range in mB for the equalizer
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* @since 3.0
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* @param aMin Minimum level in dB
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* @param aMin Maximum level in dB
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*/
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IMPORT_C void DbLevelLimits( TInt32& aMin, TInt32& aMax );
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/**
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* Get number of equalizer bands.
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* @since 3.0
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* @param -
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* @return The number of equalizer bands.
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*/
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IMPORT_C TUint8 NumberOfBands() const;
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/**
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* Sets the equalizer band level value in mB, ranging from Min to Max
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* @since 3.0
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* @param aBand Frequency Band
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* @param aLevel band level in dB, ranges from DbLevelLimits()
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* @return -
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*/
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IMPORT_C void SetBandLevelL( TInt8 aBand, TInt32 aLevel );
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public: // functions from base class
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/*
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* From CAudioEffect
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* Get the unique identifier of the audio effect
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* @since 3.0
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* @return Unique identifier
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*/
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IMPORT_C TUid Uid() const;
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protected: // Functions from base classes
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/**
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* From CAudioEffect
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* Create a package of the effect data
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* @since 3.0
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* @return A descriptor containing the effect data.
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*/
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IMPORT_C const TDesC8& DoEffectData();
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/**
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* From CAudioEffect
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* Internal function to unpack effect data
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* @since 3.0
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* @param aEffectDataBuffer Descriptor containing packed effect data
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* @return -
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*/
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IMPORT_C void SetEffectData( const TDesC8& aEffectDataBuffer );
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protected:
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/**
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* Private C++ constructor for this class.
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* @since 3.0
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* @return -
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*/
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IMPORT_C CAudioEqualizer();
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/**
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* Create a descriptor containing data for the specified band(s).
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* @since 3.0
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* @param aBand The frequency band data to package. Valid if aAllBands = EFalse.
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* @param aAllBands Indicate if data for all bands is requested.
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* @return A descriptor containing data for specified band.
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*/
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IMPORT_C const TDesC8& DoBandDataL( TUint8 aBand, TBool aAllBands );
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/**
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* Unpack band data from the specified descriptor.
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* @since 3.0
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* @param aNumberOfBands Number of bands contained in the descriptor.
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* @param aBandDataBuffer Descriptor containing band data
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*/
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IMPORT_C void SetBandDataL( TInt aNumberOfBands, const TDesC8& aBandDataBuffer );
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protected:
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// Equalizer data structure
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TEfAudioEqualizer iAudioEqualizerData;
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// Equalizer Band data structure
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RArray<TEfAudioEqualizerBand> iBandsData;
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// Data package sent to server
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TEfAudioEqualizerDataPckg iDataPckgTo;
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// Band Data package sent to server
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TEfAudioEqualizerBandDataPckg iBandDataPckgTo;
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// Bitmask used to indicate change in band data
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TUint32 iBandChange;
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HBufC8* iBandDataBuf;
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protected: // Friend classes
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friend class CAudioEqualizerMessageHandler;
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friend class CAudioEqualizerUtility;
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};
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sl@0
|
306 |
|
|
sl@0
|
307 |
#endif // of CAUDIOEQUALIZER_H
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|
sl@0
|
308 |
|
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sl@0
|
309 |
// End of File
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