/*

* Copyright (c) 2002 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 "TSU_MMF_ACOD_AAAABBBBTestCodec.h"

// __________________________________________________________________________

// Implementation

/** @xxxx

 *	This function instantiates a CMMFAAAABBBBTestCodec

 *

 * @param	"TAny* aInitParams" 

 *			pointer to initial codec parameters

 *

 * @return	pointer to newly instantiated codec

 */

CMMFCodec* CMMFAAAABBBBTestCodec::NewL(TAny* aInitParams)

	{

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

	CleanupStack::PushL(self);

	self->ConstructL(aInitParams);

	CleanupStack::Pop(self);

	return STATIC_CAST( CMMFCodec*, self );

	}

CMMFAAAABBBBTestCodec::~CMMFAAAABBBBTestCodec()

	{

	}

CMMFAAAABBBBTestCodec::CMMFAAAABBBBTestCodec()

	{

	}

void CMMFAAAABBBBTestCodec::ConstructL(TAny* /*aInitParams*/)

	{

	}

/** @xxxx

 *	This function writes '4's to the destination buffer, regardless of what is in the source buffer.

 *	This codec only exists to test the preferred supplier codec instantiation.

 *

 * @param	"const CMMFBuffer& aSrc" 

 *			reference to source buffer

 *			"CMMFBuffer& aDst" 

 *			reference to destination buffer

 *

 * @return	result of operation.

 */

TCodecProcessResult CMMFAAAABBBBTestCodec::ProcessL(const CMMFBuffer& aSrc, CMMFBuffer& aDst)

	{

	//convert from generic CMMFBuffer to CMMFDataBuffer

	iSrc = STATIC_CAST(const CMMFDataBuffer*, &aSrc);

	iDst = STATIC_CAST(CMMFDataBuffer*, &aDst);

	const TUint dstMaxLen = iDst->Data().MaxLength();

	if (!dstMaxLen)

		User::Leave(KErrArgument);

	//don't scribble Destination (pDst) by only consuming enough source to fill pDst

	TUint srcUse = dstMaxLen - iDst->Position();

	const TUint srcLen = iSrc->Data().Length();

	const TUint sourceRemain = srcLen - iSrc->Position();

	//make sure we don't blow source by checking against remaining

	//and clipping to minimum remaining if necessary

	srcUse = (srcUse<sourceRemain ? srcUse : sourceRemain);

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

	pDst += iDst->Position();

	TUint samplesToProcess = srcUse;

	while (samplesToProcess--)

		{ 

		*pDst++ = 4;

		}

	TCodecProcessResult result;

	result.iStatus = TCodecProcessResult::EProcessComplete;

	result.iSrcBytesProcessed = srcUse;

	result.iDstBytesAdded = srcUse;

	iDst->Data().SetLength(iDst->Position() + result.iDstBytesAdded);

	return result;

	}