/*

* Copyright (c) 2002-2005 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:

*

*/

#ifndef __MMF_TMMFAUDIO_PCM16_TO_IMAADPCM_CODEC_H__

#define __MMF_TMMFAUDIO_PCM16_TO_IMAASPCM_CODEC_H__

#include <e32std.h>

#include <mmfcodec/mmfaudiocodecbase.h>

#include <mmfcodec/mmfimaaudiocodecstate.h>

/**

*

* TMMFAudioPcm16ToImaAdpcmCodec 

*

*/

const TInt KImaAdpcmCodecIndexTableSize = 16;

const TInt KImaAdpcmCodecStepTableSize = 89;

/*

*

* class TMMFAudioPcm16ToImaAdpcmCodec

*

*/

class TMMFAudioPcm16ToImaAdpcmCodec : public TMMFAudioCodecBase

	{

public:

	inline TMMFAudioPcm16ToImaAdpcmCodec();

	IMPORT_C virtual void Convert(TUint8* aSrc, TUint8* aDst, TInt aSamples);

	IMPORT_C void SetState(const TMMFImaAdpcmCodecState& aState);

	IMPORT_C const TMMFImaAdpcmCodecState& GetState();

private:

	TMMFImaAdpcmCodecState iState;	//supports mono only

private:

	static const TInt KIndexTable[KImaAdpcmCodecIndexTableSize];

	static const TInt KStepSizeTable[KImaAdpcmCodecStepTableSize];

	TBool iBufferStep;

	TInt iBuffer;

	};

inline TMMFAudioPcm16ToImaAdpcmCodec::TMMFAudioPcm16ToImaAdpcmCodec() : iBufferStep(ETrue), iBuffer(0) {}

#endif //__MMF_TMMFAUDIO_PCM16_TO_IMAADPCM_CODEC_H__