// Copyright (c) 2002-2009 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 __BTGSM610_H__

#define __BTGSM610_H__

#include <mmfbtswcodecwrapper.h>

// Standard EPOC32 includes required by this header file

#include <e32base.h>

#include <mmf/server/mmfdatabuffer.h>

#include <e32std.h>

const TUint KNumFramesInABuffer  = 50;

const TInt  KGsmFrameSize = 65;

const TUint	KGsmEncodedFrameSize = KNumFramesInABuffer * KGsmFrameSize ;   //50 * 65 encoded frames

const TUint	KPcmEncodedFrameSize = KNumFramesInABuffer * 320;  // 50 times 160*2

const TInt  KPcmDataForGsmFrame = 640;

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

/**

*

*class CMmfGsmToPcm16HwDevice 

*

*/

class CMmfGsm610ToPcm16HwDevice : public CMMFSwCodecWrapper

	{	

public:

	static  CMmfGsm610ToPcm16HwDevice* NewL();

	virtual CMMFSwCodec& Codec();

	~CMmfGsm610ToPcm16HwDevice(); 

private:

	void ConstructL();

	};

/**

*

* CMmfPcmHwDevicePcm16ToGsm610 

*

*/	  

class CMmfPcm16ToGsm610HwDevice : public CMMFSwCodecWrapper

	{	

public:

	static  CMmfPcm16ToGsm610HwDevice* NewL();

	virtual CMMFSwCodec& Codec();

	~CMmfPcm16ToGsm610HwDevice(); 

private:

	void ConstructL();

	};

/**

*

* class CMMFGsm610ToPcm16Codec coverts Gsm610 to PCM16

*  

*/

class CGSM610FR_Decoder;

class CMMFGsm610ToPcm16Codec : public CMMFSwCodec

	{

public:

	CMMFGsm610ToPcm16Codec();

	virtual TCodecProcessResult ProcessL(const CMMFBuffer& aSrc, CMMFBuffer& aDest);

	virtual TUint SourceBufferSize() {return KGsmEncodedFrameSize;};

	virtual TUint SinkBufferSize() {return KPcmInputFrameSize;};

	static  CMMFGsm610ToPcm16Codec* NewL();

	void ConstructL();

	~CMMFGsm610ToPcm16Codec();

private:

	TBool CheckInputBuffers( CMMFDataBuffer& aSrc, CMMFDataBuffer& aDest );

	TInt  NumBuffersToProcess( const CMMFDataBuffer& aSrc );

	TBool ProcessPostCondition( const CMMFSwCodec::TCodecProcessResult& result );

	// do not provide an implmentation for these two methods

	const CMMFGsm610ToPcm16Codec& operator=( const CMMFGsm610ToPcm16Codec& );

	CMMFGsm610ToPcm16Codec( const CMMFGsm610ToPcm16Codec& );

private:

	CGSM610FR_Decoder* iGsmDecoder;

	};

/**

*

* class CMMFPcm16ToGsm610Codec coverts PCM16 to GSM610

*  

*/  

class CGSM610FR_Encoder;

class CMMFPcm16ToGsm610Codec : public CMMFSwCodec

	{

public:

	CMMFPcm16ToGsm610Codec();

	virtual TCodecProcessResult ProcessL(const CMMFBuffer& aSrc, CMMFBuffer& aDest);

	virtual TUint SourceBufferSize() {return KPcmInputFrameSize;};

	virtual TUint SinkBufferSize() {return  KGsmEncodedFrameSize;};	

	static  CMMFPcm16ToGsm610Codec* NewL();

	~CMMFPcm16ToGsm610Codec();

	void ConstructL();

private:

    TBool CheckInputBuffers( CMMFDataBuffer& aSrc, CMMFDataBuffer& aDest );

	TInt NumBuffersToProcess( const CMMFDataBuffer& aSrc );

	inline TBool ProcessPostCondition( const CMMFSwCodec::TCodecProcessResult& result );

	// do not supply implementations

	const CMMFPcm16ToGsm610Codec& operator=( const CMMFPcm16ToGsm610Codec& );

	CMMFPcm16ToGsm610Codec( const CMMFPcm16ToGsm610Codec &);

private:

	CGSM610FR_Encoder* iGsmEncoder;

	};

/**

*

* class TMmfAudioAudioCodecPanics provides a name space for audio codec

* panics

*

**/

class TMmfGsmCodecPanicsNameSpace

	{

public:

	/*

	A list of panic codes for Codecs

	@internalTechnology

	EBadArgument indicates a bad argument

	EBadState indicates a state viaolation

	EBadInvariant indicates an invariant violation

	EPostConditionViolation indicates a post condition violation

		*/

	enum TMmfGsmCodecPanics

		{

		EBadArgument,

		EBadState,

		EBadInvariant,

		EBadReset,

		EPostConditionViolation

		};

public:

	inline static void Panic(const TMmfGsmCodecPanicsNameSpace::TMmfGsmCodecPanics aPanic);		

	};

/**

*

* Panic

* @param aPanic is the panic code for the codec

*

*/

inline void TMmfGsmCodecPanicsNameSpace::Panic(const TMmfGsmCodecPanicsNameSpace::TMmfGsmCodecPanics aPanic)

	{

	_LIT(KGsmCodecPanicCategory, "GsmCodec");

	User::Panic(KGsmCodecPanicCategory, aPanic);

	}

/**

*

* ProcessPostCondition

* @param aResult

* @return TBool Etrue if the post condition is satisfied

*

**/

inline TBool CMMFPcm16ToGsm610Codec::ProcessPostCondition( const CMMFSwCodec::TCodecProcessResult& aResult )

	{

     TBool status = ETrue;

	 if( (aResult.iSrcBytesProcessed / KPcmDataForGsmFrame ) != (aResult.iDstBytesAdded / KGsmFrameSize  ) )

		 {

		 status = EFalse;

		 }

	 return status;

	}

#endif  //__BTGSM610_H__