// 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:

// * INCLUDE FILES:

// 

//

// Standard includes

#include <e32std.h>

#include <mmf/server/mmfswcodecwrapper.h>

#include <ecom/implementationproxy.h>

#include "GSM610.H"

#include "gsm610fr.h"

#include <ecom/ecom.h>

#include <e32def.h>

#include <mmf/plugin/mmfhwdeviceimplementationuids.hrh>

/**

*

* NewL

* @return CMmfGsm610ToPcm16HwDevice*

*

*/

CMmfGsm610ToPcm16HwDevice* CMmfGsm610ToPcm16HwDevice::NewL()

	{

	CMmfGsm610ToPcm16HwDevice* self=new(ELeave) CMmfGsm610ToPcm16HwDevice();

	CleanupStack::PushL(self);

	self->ConstructL();

	CleanupStack::Pop(self);

	return self;

	}

/**

*

* Codec

*

*/

CMMFSwCodec& CMmfGsm610ToPcm16HwDevice::Codec()

	{						  

	return *iCodec;

	}

/**

*

* CMmfGsm610ToPcm16HwDevice

*

*/

CMmfGsm610ToPcm16HwDevice::~CMmfGsm610ToPcm16HwDevice()

	{

	}

/**

*

* ConstructL

*

*/

void CMmfGsm610ToPcm16HwDevice::ConstructL()

	{

	CMMFGsm610ToPcm16Codec* ptr= new(ELeave)CMMFGsm610ToPcm16Codec();

	CleanupStack::PushL(ptr); 

	ptr->ConstructL();

	iCodec = ptr;

	CleanupStack::Pop(ptr);

	}

/**

*

* CMmfPcm16ToGsm610HwDevice

*

*/

CMmfPcm16ToGsm610HwDevice* CMmfPcm16ToGsm610HwDevice::NewL()

	{

	CMmfPcm16ToGsm610HwDevice* self=new(ELeave) CMmfPcm16ToGsm610HwDevice();

	CleanupStack::PushL(self);

	self->ConstructL();

	CleanupStack::Pop(self);

	return self;

	}

/**

*

* Codec

* @return CMMFSwCodec&

*

*/

CMMFSwCodec& CMmfPcm16ToGsm610HwDevice::Codec()

	{

	return *iCodec;

	}

/**

*

* ~CMmfPcm16ToGsm610HwDevice

*

*/

CMmfPcm16ToGsm610HwDevice::~CMmfPcm16ToGsm610HwDevice()

	{

	}

/**

*

* ConstructL

*

*/

void CMmfPcm16ToGsm610HwDevice::ConstructL()

	{

	CMMFPcm16ToGsm610Codec* ptr =new(ELeave) CMMFPcm16ToGsm610Codec();

	CleanupStack::PushL(ptr); 

	ptr->ConstructL();

	iCodec = ptr;

	CleanupStack::Pop(ptr);

	}

/**

*

* CMMFGsm610ToPcm16Codec

*

*/

CMMFGsm610ToPcm16Codec::CMMFGsm610ToPcm16Codec()

	{	

	}

/**

*

* ConstructL

*

*/

void CMMFGsm610ToPcm16Codec::ConstructL()

	{

    iGsmDecoder = new (ELeave) CGSM610FR_Decoder;

	iGsmDecoder->ConstructL();

	iGsmDecoder->StartL();

	}

/**

*

* NewL

*

*/

CMMFGsm610ToPcm16Codec*  CMMFGsm610ToPcm16Codec::NewL()

	{

	CMMFGsm610ToPcm16Codec* self=new(ELeave) CMMFGsm610ToPcm16Codec();

	CleanupStack::PushL(self);

	self->ConstructL();

	CleanupStack::Pop(self);

	return self;

	}

/**

*

* ~CMMFGsm610ToPcm16Codec

*

*/

CMMFGsm610ToPcm16Codec::~CMMFGsm610ToPcm16Codec()

	{

	delete iGsmDecoder;

	}

/**

*

* ProcessL

* @param aSource

* @param aDest

* @precondition input buffer length is mod 65

* @precondition output buffer has sufficient space for coded input

*

*/

CMMFSwCodec::TCodecProcessResult CMMFGsm610ToPcm16Codec::ProcessL(const CMMFBuffer& aSrc, CMMFBuffer& aDest)

	{

	CMMFSwCodec::TCodecProcessResult result;

	result.iCodecProcessStatus = TCodecProcessResult::EProcessComplete;

	//convert from generic CMMFBuffer to CMMFDataBuffer

	CMMFBuffer* pSrcBuffer =const_cast<CMMFBuffer*>(&aSrc);

	if( !pSrcBuffer )

		{

		User::Leave( KErrArgument );

		}

	CMMFDataBuffer* src = static_cast<CMMFDataBuffer*>( pSrcBuffer );

    if( !src )

		{

		User::Leave( KErrArgument );

		}

	CMMFDataBuffer* dst = static_cast<CMMFDataBuffer*>(&aDest);

	if( !dst )

		{

		User::Leave( KErrArgument );

		}

	if(!CheckInputBuffers( *src, *dst ))

		{

		User::Leave( KErrArgument );

		}

	TInt numBuffersToProcess = NumBuffersToProcess( *src );

	TUint8* pSrc = CONST_CAST(TUint8*,src->Data().Ptr());

	TUint8* pDst = CONST_CAST(TUint8*,dst->Data().Ptr());

	for( TInt count = 0; count < numBuffersToProcess; count++ )

		{

		// Encode two frames of gsm data

		iGsmDecoder->ExecuteL( pSrc, pDst );

		pSrc                      += KGsmFrameSize;;

		pDst                      += KPcmDataForGsmFrame;

		result.iSrcBytesProcessed += KGsmFrameSize;

		result.iDstBytesAdded     += KPcmDataForGsmFrame;

		}

    dst->Data().SetLength( result.iDstBytesAdded );

	__ASSERT_DEBUG( ProcessPostCondition( result ), TMmfGsmCodecPanicsNameSpace::Panic( TMmfGsmCodecPanicsNameSpace::EPostConditionViolation ));

	return result;

	}

/**

*

* CheckInputBuffers

* @param aSrc

* @param aDest

* @return TBool

* This function returns ETrue if the preconditions of processL are met

*

*/

TBool CMMFGsm610ToPcm16Codec::CheckInputBuffers( CMMFDataBuffer& aSrc, CMMFDataBuffer& aDest )

	{

	TBool result = ETrue;    

    TInt numInputSubFrames     = aSrc.Data().Length() / KGsmFrameSize;

	TInt numOutputSubFrames    = aDest.Data().MaxLength() / KPcmDataForGsmFrame;

	TBool validInputDataLength = (aSrc.Data().Length() % KGsmFrameSize == 0) ? ETrue : aSrc.LastBuffer();

	if( (numInputSubFrames > numOutputSubFrames) ||  // sufficient space in the output for the input

        (aSrc.Position() > 0 )  ||                   // position must be zero since we can eat all the data

		(aDest.Position() > 0 ) ||

		(!validInputDataLength))                         //position must be zero

		{

		result = EFalse;

		}

	return result;

	}

/**

*

* NumBuffersToProcess

* @param aSrc

* @return TBool

* This method returns the number of buffers to process

*

*/

TInt CMMFGsm610ToPcm16Codec::NumBuffersToProcess( const CMMFDataBuffer& aSrc )

	{

    TInt numBuffers = (aSrc.Data().Length() / KGsmFrameSize );

	return numBuffers;

	}

/**

*

* ProcessPostCondition

* @param aResult

* @result TBool Etrue if the post condition is satisfied

*

**/

TBool CMMFGsm610ToPcm16Codec::ProcessPostCondition( const CMMFSwCodec::TCodecProcessResult& aResult )

	{

     TBool status = ETrue;

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

		 {

		 status = EFalse;

		 }

	 return status;

	}

/************************>----------------------------------<*****************************/

/**

*

* CMMFPcm16ToGsm610Codec

*

*/

CMMFPcm16ToGsm610Codec::CMMFPcm16ToGsm610Codec()

	{	

	}

/**

*

* ConstructL

*

*/

void CMMFPcm16ToGsm610Codec::ConstructL()

	{

	iGsmEncoder = new (ELeave) CGSM610FR_Encoder;

	iGsmEncoder->ConstructL();

	iGsmEncoder->StartL();

	}

/**

*

* NewL

*

*/

CMMFPcm16ToGsm610Codec* CMMFPcm16ToGsm610Codec::NewL()

	{

	CMMFPcm16ToGsm610Codec* self=new(ELeave) CMMFPcm16ToGsm610Codec();

	CleanupStack::PushL(self);

	self->ConstructL();

	CleanupStack::Pop(self);

	return self;

	}

/**

*

* CMMFPcm16ToGsm610Codec

*

*/

CMMFPcm16ToGsm610Codec::~CMMFPcm16ToGsm610Codec()

	{

	delete iGsmEncoder;

	}

/**

*

* ProcessL

* @param aSource

* @param aDest TCodecProcessResult

* @result

* @precondition input buffer length is mod 320

* @precondition output buffer has sufficient space for coded input

*/

CMMFSwCodec::TCodecProcessResult CMMFPcm16ToGsm610Codec::ProcessL(const CMMFBuffer& aSrc, CMMFBuffer& aDest)

	{

	CMMFSwCodec::TCodecProcessResult result;

	result.iCodecProcessStatus = TCodecProcessResult::EProcessComplete;

	//convert from generic CMMFBuffer to CMMFDataBuffer

	CMMFBuffer* pSrcBuffer =const_cast<CMMFBuffer*>(&aSrc);

	if( !pSrcBuffer )

		{

		User::Leave( KErrArgument );

		}

	CMMFDataBuffer* src = static_cast<CMMFDataBuffer*>( pSrcBuffer );

    if( !src )

		{

		User::Leave( KErrArgument );

		}

	CMMFDataBuffer* dst = static_cast<CMMFDataBuffer*>(&aDest);

	if( !dst )

		{

		User::Leave( KErrArgument );

		}

	if(!CheckInputBuffers( *src, *dst ))

		{

		User::Leave( KErrArgument );

		}

	TInt numBuffersToProcess = NumBuffersToProcess( *src );

	TUint8* pSrc = CONST_CAST(TUint8*,src->Data().Ptr());

	TUint8* pDst = CONST_CAST(TUint8*,dst->Data().Ptr());

	for( TInt count = 0; count < numBuffersToProcess; count++ )

		{

		// Encode two frames of gsm data

		iGsmEncoder->ExecuteL (pSrc, pDst);

		pSrc                      += KPcmDataForGsmFrame;

		pDst                      += KGsmFrameSize;

		result.iSrcBytesProcessed += KPcmDataForGsmFrame;

		result.iDstBytesAdded     += KGsmFrameSize;

		}

    dst->Data().SetLength( result.iDstBytesAdded ); 

	__ASSERT_DEBUG( ProcessPostCondition(result), TMmfGsmCodecPanicsNameSpace::Panic( TMmfGsmCodecPanicsNameSpace::EPostConditionViolation ));

    return result ;

	}

/**

*

* CheckInputBuffers

* @param aSrc

* @param aDest

* @return TBool

* This function returns ETrue if there is sufficient space

* in the output buffer for the coded input and

* the position of both input buffers is zero

*

*/

TBool CMMFPcm16ToGsm610Codec::CheckInputBuffers( CMMFDataBuffer& aSrc, CMMFDataBuffer& aDest )

	{

	TBool result = ETrue;    

    TInt numInputSubFrames     = aSrc.Data().Length() / KPcmDataForGsmFrame;

	TInt numOutputSubFrames    = aDest.Data().MaxLength() / KGsmFrameSize;

#ifdef EABI

	TBool validInputDataLength = (aSrc.Data().Length() % KPcmDataForGsmFrame == 0);

#else

	TBool validInputDataLength = (aSrc.LastBuffer()? ETrue: (aSrc.Data().Length() % KPcmDataForGsmFrame == 0));

#endif

	if( (numInputSubFrames > numOutputSubFrames) ||  // sufficient space in the output for the input

        (aSrc.Position() > 0 )  ||                   // position must be zero since we can eat all the data

		(aDest.Position() > 0 ) ||

		(!validInputDataLength))                         //position must be zero

		{

		result = EFalse;

		}

	return result;

	}

/**

*

* NumBuffersToProcess

* @param aSrc

* @return TBool

* This method returns the number of buffers to process

*

*/

TInt CMMFPcm16ToGsm610Codec::NumBuffersToProcess( const CMMFDataBuffer& aSrc )

	{

	TInt numBuffers = ( aSrc.Data().Length() / KPcmDataForGsmFrame );

	return numBuffers;

	}