--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/devsound/devsoundrefplugin/src/plugin/audio/mmfpcm16topcmU16BEHwDevice.cpp	Tue Feb 02 01:56:55 2010 +0200
@@ -0,0 +1,158 @@
+// Copyright (c) 2003-2009 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 "mmfpcm16topcmU16BEHwDevice.h"
+
+/**
+ *
+ *	Returns the created hw device for passing audio through audio.
+ *  for the wins implementation this would always be pcm16 although
+ *  this is effectively a null hw device that will pass any datatype through
+ *	@return	"CMMFPcm16ToPcmU16BEHwDevice"
+ *
+ */
+CMMFPcm16ToPcmU16BEHwDevice* CMMFPcm16ToPcmU16BEHwDevice::NewL()
+	{
+    CMMFPcm16ToPcmU16BEHwDevice* self = new (ELeave) CMMFPcm16ToPcmU16BEHwDevice();
+	CleanupStack::PushL(self);
+	self->ConstructL();
+	CleanupStack::Pop(self);
+	return self;
+	}
+
+/**
+*
+* ~CMMFPcm16ToPcmU16BEHwDevice
+*/
+CMMFPcm16ToPcmU16BEHwDevice::~CMMFPcm16ToPcmU16BEHwDevice()
+	{
+	}
+
+/**
+*
+* ConstructL
+*
+*/
+void CMMFPcm16ToPcmU16BEHwDevice::ConstructL()
+	{
+	iCodec = new (ELeave) CMMFPcm16ToPcmU16BECodec();
+	}
+
+/**
+*
+* Codec
+* @return 'CMMFSwCodec&'
+*/
+CMMFSwCodec& CMMFPcm16ToPcmU16BEHwDevice::Codec()
+	{
+	return *iCodec;
+	}
+
+/**
+*
+* ProcessL
+* @param aSrc 
+* @param aDst
+* @pre position of buffer aSrc is 0
+* @pre position of buffer aDst is 0
+* @pre sufficient bytes in output to consume input
+* @return 'CMMFSwCodec::TCodecProcessResult'
+* this codec has a does not expand or shrink destination data
+*/
+CMMFSwCodec::TCodecProcessResult CMMFPcm16ToPcmU16BECodec::ProcessL(const CMMFBuffer& aSrc, CMMFBuffer& aDst)
+	{
+	TCodecProcessResult result;
+	result.iCodecProcessStatus = TCodecProcessResult::EProcessComplete;
+	
+	//convert from generic CMMFBuffer to CMMFDataBuffer
+	const CMMFDataBuffer* src = STATIC_CAST(const CMMFDataBuffer*, &aSrc);
+	CMMFDataBuffer* dst = STATIC_CAST(CMMFDataBuffer*, &aDst);
+	
+	//[ Check preconsitions ]
+	if( !CheckPreconditions( src, dst ))
+		{
+		//[ precondition violation ]
+		User::Leave( KErrArgument );
+		}
+	
+	//we need to cast away CONST even on the source, as the TClass needs a TUint8*	
+	TUint8* pSrc = CONST_CAST(TUint8*,src->Data().Ptr());
+	TUint8* pDst = CONST_CAST(TUint8*,dst->Data().Ptr());
+    
+	TInt srcUse = src->Data().Length();
+	
+	TInt noSamples = srcUse/2; // for pcm16 TInt16
+	iAudioPcm16ToPcmU16Be.Convert(pSrc, pDst, noSamples );
+	
+	result.iCodecProcessStatus = TCodecProcessResult::EProcessComplete;
+	result.iSrcBytesProcessed  = srcUse;
+	result.iDstBytesAdded      = srcUse;
+	
+	dst->Data().SetLength(srcUse);
+	
+	//[ Check post conditions ]
+	__ASSERT_DEBUG( (src->Position() == 0), TMmfAudioCodecPanicsNameSpace::Panic( 	TMmfAudioCodecPanicsNameSpace::EPostConditionViolation ));
+	__ASSERT_DEBUG( (dst->Position() == 0), TMmfAudioCodecPanicsNameSpace::Panic( 	TMmfAudioCodecPanicsNameSpace::EPostConditionViolation ));
+	__ASSERT_DEBUG( src->Data().Length() == dst->Data().Length(), TMmfAudioCodecPanicsNameSpace::Panic( 	TMmfAudioCodecPanicsNameSpace::EPostConditionViolation ));
+	__ASSERT_DEBUG( dst->Data().Length() % 2 == 0, TMmfAudioCodecPanicsNameSpace::Panic( 	TMmfAudioCodecPanicsNameSpace::EPostConditionViolation )); // pcm output
+	
+	return result;
+	}
+
+/**
+*
+* Preconditions
+* This methos tests the preconditions of the ProcessL method
+* @return TBool ETrue for sucess and EFalse for failure of the preconditions
+*
+**/
+TBool CMMFPcm16ToPcmU16BECodec::CheckPreconditions( const CMMFDataBuffer* aSrcBuffer, CMMFDataBuffer* aDestBuffer )
+	{
+     TBool result = EFalse;
+	 
+	 if(! aSrcBuffer )
+		 {
+		 return result;
+		 }
+	 
+	 if( ! aDestBuffer )
+		 {
+		 return result;
+		 }
+	 
+	 // Check position of src and dest are 0
+	 if( aSrcBuffer->Position() )
+		 {
+		 return result;
+		 }
+	 
+	 // Check position of src and dest are 0
+	 if( aDestBuffer->Position() )
+		 {
+		 return result;
+		 }
+	 
+	 // check there are sufficient bytes in the output to consume the input
+     if( ( aSrcBuffer->Data().Length() > aDestBuffer->Data().MaxLength() ) ||
+		 ( aSrcBuffer->Data().Length() % 2 != 0 ) ) // must have pcm16 samples on input
+		 {
+		 return result;
+		 }
+	 
+	 result = ETrue;  // preconditions have been satisfied
+	 
+	 return result;
+	}
+