1 /*

     2 * Copyright (c) 2002 Nokia Corporation and/or its subsidiary(-ies).

     3 * All rights reserved.

     4 * This component and the accompanying materials are made available

     5 * under the terms of "Eclipse Public License v1.0"

     6 * which accompanies this distribution, and is available

     7 * at the URL "http://www.eclipse.org/legal/epl-v10.html".

     8 *

     9 * Initial Contributors:

    10 * Nokia Corporation - initial contribution.

    11 *

    12 * Contributors:

    13 *

    14 * Description:

    15 *

    16 */

    17 

    18 

    19 #include "TSU_MMF_ACOD_AAAABBBBTest2Codec.h"

    20 

    21 // __________________________________________________________________________

    22 // Implementation

    23 

    24 /** @xxxx

    25  *	This function instantiates a CMMFAAAABBBBTest2Codec

    26  *

    27  * @param	"TAny* aInitParams" 

    28  *			pointer to initial codec parameters

    29  *

    30  * @return	pointer to newly instantiated codec

    31  */

    32 CMMFCodec* CMMFAAAABBBBTest2Codec::NewL(TAny* aInitParams)

    33 	{

    34 	CMMFAAAABBBBTest2Codec* self=new(ELeave) CMMFAAAABBBBTest2Codec();

    35 	CleanupStack::PushL(self);

    36 	self->ConstructL(aInitParams);

    37 	CleanupStack::Pop(self);

    38 	return STATIC_CAST( CMMFCodec*, self );

    39 	}

    40 

    41 CMMFAAAABBBBTest2Codec::~CMMFAAAABBBBTest2Codec()

    42 	{

    43 	}

    44 

    45 CMMFAAAABBBBTest2Codec::CMMFAAAABBBBTest2Codec()

    46 	{

    47 	}

    48 

    49 void CMMFAAAABBBBTest2Codec::ConstructL(TAny* /*aInitParams*/)

    50 	{

    51 	}

    52 

    53 /** @xxxx

    54  *	This function writes '7's to the destination buffer, regardless of what is in the source buffer.

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

    56  *

    57  * @param	"const CMMFBuffer& aSrc" 

    58  *			reference to source buffer

    59  *			"CMMFBuffer& aDst" 

    60  *			reference to destination buffer

    61  *

    62  * @return	result of operation.

    63  */

    64 TCodecProcessResult CMMFAAAABBBBTest2Codec::ProcessL(const CMMFBuffer& aSrc, CMMFBuffer& aDst)

    65 	{

    66 	//convert from generic CMMFBuffer to CMMFDataBuffer

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

    68 	iDst = STATIC_CAST(CMMFDataBuffer*, &aDst);

    69 

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

    71 

    72 	if (!dstMaxLen)

    73 		User::Leave(KErrArgument);

    74 

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

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

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

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

    79 

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

    81 	//and clipping to minimum remaining if necessary

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

    83 	

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

    85 	pDst += iDst->Position();

    86 

    87 	TUint samplesToProcess = srcUse;

    88 	while (samplesToProcess--)

    89 		{ 

    90 		*pDst++ = 7;

    91 		}

    92 

    93 	TCodecProcessResult result;

    94 	result.iStatus = TCodecProcessResult::EProcessComplete;

    95 

    96 	result.iSrcBytesProcessed = srcUse;

    97 	result.iDstBytesAdded = srcUse;

    98 

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

   100 

   101 	return result;

   102 

   103 	}