// Copyright (c) 1997-2009 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:

//

#ifndef __MMF_CODEC_BASE_DEFINITIONS_H__

#define __MMF_CODEC_BASE_DEFINITIONS_H__

#include <mmf/server/mmfcodec.h>

#include <mmf/server/mmfdatabuffer.h>

#include <e32std.h>

// IMA ADPCM Codecs

// Internal to Symbian

class TMMFImaAdpcmCodecStateOld

	{

public:

	inline TMMFImaAdpcmCodecStateOld();

	inline TMMFImaAdpcmCodecStateOld(TInt16 aPredicted, TUint8 aIndex);

public:

	TInt16 iPredicted; // Previous output value

	TUint8 iIndex; // Index into stepsize table

	};

// Internal to Symbian

class TMMFAudioCodecBaseOld

	{

public:

	inline TMMFAudioCodecBaseOld();

	//

	virtual void Convert(TUint8* aSrc, TUint8* aDst, TInt aSamples)=0;

	};

// Internal to Symbian

class TMMFImaAdpcmBaseCodecOld : public TMMFAudioCodecBaseOld

	{

public:

	inline TMMFImaAdpcmBaseCodecOld(const TInt aChannels);

	inline void SetState(const TMMFImaAdpcmCodecStateOld& aState);

	inline void SetState(const TMMFImaAdpcmCodecStateOld& aState,const TInt aChannel);

	inline const TMMFImaAdpcmCodecStateOld& GetState();

	inline const TMMFImaAdpcmCodecStateOld& GetState(const TInt aChannel);

	void ResetBuffer();

	TBool OutputStep();

protected:

	TMMFImaAdpcmCodecStateOld iState[2];	//for mono & stereo

	static const TInt iIndexTable[16];

	static const TInt iStepSizeTable[89];

	TBool iBufferStep;

	TInt iBuffer;

	TInt iChannels;

	};

// Internal to Symbian

class TMMFImaAdpcmTo16PcmCodecOld : public TMMFImaAdpcmBaseCodecOld

	{

public:

	inline TMMFImaAdpcmTo16PcmCodecOld(const TInt aChannels);

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

	};

// Internal to Symbian

class TMMF16PcmToImaAdpcmCodecOld : public TMMFImaAdpcmBaseCodecOld

	{

public:

	inline TMMF16PcmToImaAdpcmCodecOld(const TInt aChannels);

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

	};

inline TMMFAudioCodecBaseOld::TMMFAudioCodecBaseOld()

	{}

inline TMMFImaAdpcmBaseCodecOld::TMMFImaAdpcmBaseCodecOld(const TInt aChannels)

: iBufferStep(ETrue), iBuffer(0), iChannels(aChannels) {}

inline TMMFImaAdpcmCodecStateOld::TMMFImaAdpcmCodecStateOld()

	: iPredicted(0), iIndex(0) {}

inline TMMFImaAdpcmCodecStateOld::TMMFImaAdpcmCodecStateOld(TInt16 aPredicted, TUint8 aIndex)

	: iPredicted(aPredicted), iIndex(aIndex) {}

inline void TMMFImaAdpcmBaseCodecOld::SetState(const TMMFImaAdpcmCodecStateOld& aState)

	{ iState[0] = aState; }

inline const TMMFImaAdpcmCodecStateOld& TMMFImaAdpcmBaseCodecOld::GetState()

	{ return iState[0]; }

inline void TMMFImaAdpcmBaseCodecOld::SetState(const TMMFImaAdpcmCodecStateOld& aState, const TInt aChannel)

	{ iState[aChannel] = aState; }

inline const TMMFImaAdpcmCodecStateOld& TMMFImaAdpcmBaseCodecOld::GetState(const TInt aChannel)

	{ return iState[aChannel]; }

inline TMMFImaAdpcmTo16PcmCodecOld::TMMFImaAdpcmTo16PcmCodecOld(const TInt aChannels)

	:TMMFImaAdpcmBaseCodecOld(aChannels)

	{}

inline TMMF16PcmToImaAdpcmCodecOld::TMMF16PcmToImaAdpcmCodecOld(const TInt aChannels)

	:TMMFImaAdpcmBaseCodecOld(aChannels)

	{}

#endif