/*

* Copyright (c) 2008 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:  Maintains the set of supported codecs 

*

*/

#ifndef C_IRCODECMANAGER_H

#define C_IRCODECMANAGER_H

#include <sounddevice.h>

/**

 *  Maintains the list of supported codecs in a terminal.

 * 

 *

 */

NONSHARABLE_CLASS( CIRCodecManager ): public CBase, public MDevSoundObserver

    {

public:

    /**

     * Two-phased constructor.

     * @return Instance of CIRCodecManager

     */

    static CIRCodecManager* NewL();

    /**

     * Two-phased constructor.

     * @return Instance of CIRCodecManager

     */

    static CIRCodecManager* NewLC();

    /**

     * Destructor.

     */

    ~CIRCodecManager();

    /**

     * Tells if the codec provided as argument is supported by the terminal 

     * and by Internet Radio.

     * 

     * @param aCodec The codec that's support is tested.

     * @return ETrue if the codec is supported, EFalse if not.

     */

    TBool IsSupportedCodec( TFourCC aCodec ) const;

private:

    /**

     * C++ Default constructor.

     */

    CIRCodecManager();

    /**

     * Second phase constructor

     */

    void ConstructL();

private: // From MDevSoundObserver

    /**

     * @see MDevSoundObserver::InitializeComplete

     */

    void InitializeComplete(TInt aError);

    /**

     * @see MDevSoundObserver::ToneFinished

     */

    void ToneFinished(TInt aError);

    /**

     * @see MDevSoundObserver::BufferToBeFilled

     */

    void BufferToBeFilled(CMMFBuffer* aBuffer);

    /**

     * @see MDevSoundObserver::PlayError

     */

    void PlayError(TInt aError);

    /**

     * @see MDevSoundObserver::BufferToBeEmptied

     */

    void BufferToBeEmptied(CMMFBuffer* aBuffer);

    /**

     * @see MDevSoundObserver::RecordError

     */

    void RecordError(TInt aError);

    /**

     * @see MDevSoundObserver::ConvertError

     */

    void ConvertError(TInt aError);

    /**

     * @see MDevSoundObserver::DeviceMessage

     */

    void DeviceMessage(TUid aMessageType, const TDesC8& aMsg);

private:

    /**

     * Initialises the set of supported codecs.

     */

    void LoadSupportedCodecsL();

    /**

     * Checks that the codec is in the set of Internet Radio's supported codecs

     * and verifies that DevSound can be initialised with the codec.

     * 

     * @param aCodec The codec to be tested.

     * @return ETrue if the codec is really supported, EFalse otherwise.

     */

    TBool VerifySupportL( TFourCC aCodec );

private: 

    /**

     * The set of codecs that are supported.

     * Owned.

     */

    RArray<TFourCC> iSupportedDataTypes;

    };

#endif // C_IRCODECMANAGER_H