// Copyright (c) 2003-2009 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 CWavDecodeUtility: public CBase

	{

public:

	static CWavDecodeUtility* NewL(TDesC8& aBuffer);

	~CWavDecodeUtility();

	inline TUint GetChannels(void) const  {return iChannels;};

	inline TUint GetSampleRate(void) const {return iSampleRate;};

	inline TUint GetBitsPerSample(void) const {return iBitsPerSample;};

	inline TUint GetDataLength(void) const {return iDataLength;};

	inline TUint GetSamples(void) const {return iDataLength / (iChannels * iBitsPerSample / 8);};

private:

	CWavDecodeUtility();

	void ConstructL(TDesC8& aBuffer);

	TUint16 Read16(const TUint8* aPtr);

	TUint32 Read32(const TUint8* aPtr);

	void FindRiffChunksL(void);

	void ProcessFormatHeaderL();

	void ReadChunk(TMdaRiffChunk* aChunk);

	void AssignChunkTo(TMdaRiffChunk* aAssignedChunk);

private:

//	CMMFDataBuffer* iBuffer;

	TDesC8* iBuffer;

	const TUint8* iStartPtr;

	TUint iLastReadPosition;

	TBool iHasFactChunk;

	TMdaRiffChunk iCurrent;

	TMdaRiffChunk iFormatChunk;

	TMdaRiffChunk iFactChunk;

	TMdaRiffChunk iDataChunk;

	TUint iRiffChunkLength;

	TBool iFoundChunks;

	TBool iDone;

	TUint iStartPosition;

	TUint iCodecId;

	TUint iChannels;

	TUint iSampleRate;

	TUint iBlockAlign;				//needed for correct IMA

	TUint iBitsPerSample;

	TUint iDataLength;

	TUint iAverageBytesPerSecond;	//needed for correct IMA

	TUint iSamplesPerBlock;

	TUint iPos;

	TUint iClipLength;

	};