// Copyright (c) 2000-2009 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 __GSM610_H__

#define __GSM610_H__

//*******************************************************************

//* INCLUDE FILES:

//*******************************************************************

// Standard EPOC32 includes required by this header file

#include <e32base.h>

#include <mmf/server/mmfcodec.h>

#include <mmf/server/mmfdatabuffer.h>

#include <e32std.h>

#include "gsm610fr.h"

const TUint	KGsmEncodedFrameSize = 65;

const TUint	KPcmEncodedFrameSize = 160*2;

const TUint	KPcmInputFrameSize   = KPcmEncodedFrameSize*2;	// cache 2 frames

// Internal to Symbian

// Used to be TMMFPtr8 - useful aid to porting

class TMMFPtr8 : public TPtr8

	{

public:

	TMMFPtr8()

		: TPtr8(0,0,0) {};

	inline void Set(const TDes8& aDes)

		{ TPtr8::Set((TUint8*)(aDes.Ptr()),aDes.Length(),aDes.MaxLength()); };

	inline void SetLengthOnly(const TDes8& aDes)

		{ TPtr8::Set((TUint8*)(aDes.Ptr()),aDes.Length(),aDes.Length()); };

	inline void Set(const TPtrC8& aDes)

		{ TPtr8::Set((TUint8*)(aDes.Ptr()),aDes.Length(),aDes.Length()); };

	inline void Shift(TInt aOffset)

		{ SetLength(Length()-aOffset); iMaxLength-=aOffset; iPtr+=aOffset; };

	};

//*******************************************************************

//* GSM to 16 bit PCM Codec Class:

//*******************************************************************

class CGsmTo16PcmWavCodec : public CBase

	{

public:

	CGsmTo16PcmWavCodec();

	~CGsmTo16PcmWavCodec();

	void ConstructL();

	void Reset();

	void ResetAllL();

	void ProcessL(TMMFPtr8* aSrc, TMMFPtr8* aDst);

private:

	TUint    iOutBufferCount;

	TUint8* iOutBufferPtr;

	TUint8  iOutBuffer [KPcmInputFrameSize];

	TUint    iInBufferCount;

	TUint8* iInBufferPtr;

	TUint8  iInBuffer [KGsmEncodedFrameSize];

	CGSM610FR_Decoder* iGsmDecoder;

	};

//*******************************************************************

//* 16 bit PCM to GSM Codec Class:

//*******************************************************************

class C16PcmToGsmWavCodec : public CBase

	{

public:

	C16PcmToGsmWavCodec();

	~C16PcmToGsmWavCodec();

	void ConstructL();

	void Reset();

	void ResetAllL();

	void ProcessL(TMMFPtr8* aSrc, TMMFPtr8* aDst);

private:

	TUint    iOutBufferCount;

	TUint8* iOutBufferPtr;

	TUint8  iOutBuffer [KGsmEncodedFrameSize];

	TUint    iInBufferCount;

	TUint8* iInBufferPtr;

	TUint8  iInBuffer [KPcmInputFrameSize];

	CGSM610FR_Encoder* iGsmEncoder;

	};

class CMMFGsmTo16PcmCodec : public CMMFCodec

	{

public:

	static CMMFCodec* NewL(TAny* aInitParams);

	virtual ~CMMFGsmTo16PcmCodec();

	TCodecProcessResult ProcessL(const CMMFBuffer& aSrc, CMMFBuffer& aDst);

private:

	CMMFGsmTo16PcmCodec();

	void ConstructL(TAny* aInitParams);

private:

	//buffers owned by the datapath

	const CMMFDataBuffer* iSrc;

	CMMFDataBuffer* iDst;

	TUint iLastFrameNumber;

	//the real codec, CMMFGsmTo16PcmCodec is just a wrapper

	CGsmTo16PcmWavCodec* iCodecPtr;

	};

class CMMF16PcmToGsmCodec : public CMMFCodec

	{

public:

	static CMMFCodec* NewL(TAny* aInitParams);

	virtual ~CMMF16PcmToGsmCodec();

	TCodecProcessResult ProcessL(const CMMFBuffer& aSrc, CMMFBuffer& aDst);

private:

	CMMF16PcmToGsmCodec();

	void ConstructL(TAny* aInitParams);

private:

	//buffers owned by the datapath

	const CMMFDataBuffer* iSrc;

	CMMFDataBuffer* iDst;

	TUint iLastFrameNumber;

	//the real codec, is CMMF16PcmToGsmCodec just a wrapper

	C16PcmToGsmWavCodec* iCodecPtr;

	};

#endif