/*

* Copyright (c) 2006 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:  Header of EqualizerControl interface.

*

*/

#ifndef EQUALIZERCONTROL_H

#define EQUALIZERCONTROL_H

#include <AudioEffectControl.h>

namespace multimedia

    {

    // Uid identifying Equalizer Control

    const TUid KEqualizerEffectControl = {0x10207BDD};

    class MEqualizerControl : public MAudioEffectControl

        {

		public:

			static const TUint KBand1Changed = KSpecificEffectBase + 1;

			static const TUint KBand2Changed = KSpecificEffectBase + 2;

			static const TUint KBand3Changed = KSpecificEffectBase + 3;

			static const TUint KBand4Changed = KSpecificEffectBase + 4;

			static const TUint KBand5Changed = KSpecificEffectBase + 5;

			static const TUint KBand6Changed = KSpecificEffectBase + 6;

			static const TUint KBand7Changed = KSpecificEffectBase + 7;

			static const TUint KBand8Changed = KSpecificEffectBase + 8;

			static const TUint KBand9Changed = KSpecificEffectBase + 9;

			static const TUint KBand10Changed = KSpecificEffectBase + 10;

			static const TUint KBand11Changed = KSpecificEffectBase + 11;

			static const TUint KBand12Changed = KSpecificEffectBase + 12;		

        public:

			/**

	        * Get the band level in mB for the specified band

	        * @since 3.0

	        * @param aBand Frequency Band

	        * @return Returns the band level in mB for the specified band

	        */

			virtual TInt BandLevel( TInt& aBand, TInt& aBandLevel ) = 0;

			/**

	        * Get the band width in Hz for the specified band.

	        * @since 3.0

	        * @param aBand Frequency Band

	        * @return The band width in Hz for the specified band

	        */

			virtual TInt BandWidth( TInt& aBand, TInt& aBandWidth ) = 0;

			/**

	        * Get the center frequency in Hz for a given band

	        * @since 3.0

	        * @param aBand Frequency Band

	        * @return The center frequency in Hz for a given band.

	        */

			virtual TInt CenterFrequency( TInt& aBand, TInt& aCenterFrequency ) = 0;

			/**

	        * Get the cross-over frequency between the given frequency band (aBand) and the next band

	        * @since 3.0

	        * @param aBand Frequency Band

	        * @return Crossover frequency.

	        */

			virtual TInt CrossoverFrequency( TInt& aBand, TInt& aCrossoverFreq ) = 0;

			/**

	        * Get the dB range in mB for the equalizer

	        * @since 3.0

	        * @param aMin Minimum level in dB

	        * @param aMin Maximum level in dB

	        */

			virtual TInt DbLevelLimits( TInt& aMin, TInt& aMax ) = 0;

			/**

	        * Get number of equalizer bands.

	        * @since 3.0

	        * @param -

	        * @return The number of equalizer bands.

	        */

			virtual TInt NumberOfBands(TInt& aNumberofBands) = 0;

			/**

	        * Sets the equalizer band level value in mB, ranging from Min to Max

	        * @since 3.0

	        * @param aBand Frequency Band

	        * @param aLevel band level in dB, ranges from DbLevelLimits()

	        * @return -

	        */

			virtual TInt SetBandLevel( TInt& aBand, TInt& aLevel ) = 0;

        };

    } // namespace multimedia

#endif // EQUALIZERCONTROL_H

// End of file