/*

* Copyright (c) 2004 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:  Class definition for the AMR utility functions.

*

*/

#ifndef CAMRAUDIOCONTROLLERUTILITY_H

#define CAMRAUDIOCONTROLLERUTILITY_H

//  INCLUDES

#include "AdvancedAudioUtility.h"

// FORWARD DECLARATIONS

class CMMFDataBuffer;

// CLASS DEFINITIONS

/**

*  This class provides AMR utility functions.

*

*  @lib CAMRAudioControllerUtility.lib

*  @since 3.0

*/

class CAMRAudioControllerUtility : public CAdvancedAudioUtility

    {

	public:  // Constructors and destructor

        /**

        * Two-phased constructor.

        */

        IMPORT_C static CAMRAudioControllerUtility* NewL();

        /**

        * Destructor.

        */

        IMPORT_C virtual ~CAMRAudioControllerUtility();

    public: // Functions from base classes

		/**

		* From CAdvancedAudioUtility

        * Scans header information

		* @param aDataBuf

		* @return void

		*/

		void ScanHeaderL(CMMFDataBuffer* aDataBuf);

		/**

        * From CAdvancedAudioUtility

		* Returns the byte position of the first frame.

		* @param aBuf Pointer to the data

		* @param aBufLen Length of the data

		* @return byte position of the first frame

		*/

		TInt SeekSync( CMMFDataBuffer* aBuf, TInt aBufLen );

		/**

        * From CAdvancedAudioUtility

		* Returns frame info.

		* @param aBuf Pointer to the data

		* @param aBufLen Length of the data

		* @param aInfo Contains the frame info on return

		* @return frame length

		*/

		TInt FrameInfo( const TUint8* aBuf, TInt aBufLen, TAudioFrameInfo& aInfo );

		/**

        * From CAdvancedAudioUtility

		* Returns frame header size.

		* @param none

		* @return frame header size

		*/

		TInt FrameHeaderSize();

	private:

        /**

        * C++ default constructor.

        */

		CAMRAudioControllerUtility();

        /**

        * By default Symbian 2nd phase constructor is private.

        */

		void ConstructL();

	private:	// Data

	    TInt iFrameDataOffset;

    };

#endif 		// CAMRAUDIOCONTROLLERUTILITY_H

// End of File