/*

* 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:  Class definition for the AAC utility functions.

*

*/

#ifndef CEAACPLUSAUDIOCONTROLLERUTILITY_H

#define CEAACPLUSAUDIOCONTROLLERUTILITY_H

//  INCLUDES

#include "AdvancedAudioUtility.h"

//#include "MmfEnhAacPlusUtil.h"

#include <EAacPlusUtil.h>

// FORWARD DECLARATIONS

class CMMFDataBuffer;

//class CMmfEAacPlusUtil;

class CEAacPlusUtil;

// CLASS DEFINITIONS

/**

*  This class provides AAC utility functions.

*

*  @lib EAACPlusAudioControllerUtility.lib

*  @since 3.0

*/

class CEAACPlusAudioControllerUtility : public CAdvancedAudioUtility

    {

	public:  // Constructors and destructor

        /**

        * Two-phased constructor.

        */

        IMPORT_C static CEAACPlusAudioControllerUtility* NewL();

        /**

        * Destructor.

        */

        IMPORT_C virtual ~CEAACPlusAudioControllerUtility();

    public: // New functions

		/**

		* Returns true if header should be included in the first buffer

		* sent to the codec.

		* @param none

		* @return ETrue if header should be prepended, EFalse otherwise

		*/

		IMPORT_C TBool PrependHeader();

    public: // Functions from base classes

        /**

        * From CAdvancedAudioUtility

		* @param aDataBuf

		* @return void

		*/

		void ScanHeaderL(CMMFDataBuffer* aDataBuf);

		/**

        * From CAdvancedAudioUtility

		* @param none

		* @return TInt Last scanned frame position

		*/

        TInt LastScannedFramePosition();

		/**

        * From CAdvancedAudioUtility

		* @param aBuf

		* @param aBufLen

		* @return TInt Seek offset

		*/

        TInt SeekSync(CMMFDataBuffer* aBuf, TInt aBufLen);

		/**

        * From CAdvancedAudioUtility

		* Sets the codec config sample rate.

		* @param aCodecConfig codec's configuration data

		* @return void

		*/

		void SetCodecConfigData(RArray<TInt>& aCodecConfig);

	private:

        /**

        * C++ default constructor.

        */

		CEAACPlusAudioControllerUtility();

        /**

        * By default Symbian 2nd phase constructor is private.

        */

		void ConstructL();

        /**

        * Gets the bitrate information

        * @since 3.0

		* @param aBuffer buffer containing the header data

		* @return TInt bitrate

        */

        TInt GetBitrate(CMMFDataBuffer* aBuffer);

        /**

        * Test if the pointer points to a valid AAC frame

        * @since 2.1

        * @param aPtr Pointer to the presumed frame

        * @return Length of the buffer

        */

        TBool IsValidAacFrame(const TUint8* aPtr, TInt aBufLen);

	private:	// Data

		// Format type - ADIF, ADTS, Raw

		CEAacPlusUtil::TEAacPlusFormatType iFormatType;

		// Pointer to AAC utility

//		CMmfEAacPlusUtil* iEAacPlusUtils;

		CEAacPlusUtil* iAacUtil;

		// Pointer to a data buffer

		CMMFDataBuffer* iDataBuffer;

		// AAC profile

		TInt iProfile;

		TInt iOutFrameSize; //AAC Frame Length

		TInt iOutSamplingFrequency;

		TInt iSamplingFrequency;

		TInt iExtObjectType;

		TInt iDownSampledMode;

		// Used for adding frame length

        TInt iSumFrameLength;

        // Number of frames scanned

        TInt iNumFramesScanned;

        // Number of frames to scan

        TInt iNumFramesToScan;

    };

#endif 		// CEAACPLUSAUDIOCONTROLLERUTILITY_H

// End of File