diff -r 000000000000 -r bde4ae8d615e os/mm/mmlibs/mmfw/tsrc/mmfunittest/ctlfrm/mp3/MmfMP3NullCodec/mmfmp3Codec.cpp
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/os/mm/mmlibs/mmfw/tsrc/mmfunittest/ctlfrm/mp3/MmfMP3NullCodec/mmfmp3Codec.cpp	Fri Jun 15 03:10:57 2012 +0200
@@ -0,0 +1,118 @@
+// 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:
+// This is a test codec which takes MP3 data & gives it back to the datapath
+// pretending it has converted it to PCM16 data thus producing lots of noise
+// 
+//
+
+#include <e32std.h>
+
+#include <mmf/plugin/mmfcodecimplementationuids.hrh>
+#include <ecom/implementationproxy.h>
+
+#include "MP3Uids.hrh"
+
+#include "mmfmp3Codec.h"
+
+//*******************************************************************
+//*  MP3 Codec to 16 bit PCM Class:
+//*******************************************************************
+
+// __________________________________________________________________________
+// Implementation
+
+CMMFCodec* CMMFMP3To16PcmCodec::NewL(TAny* aInitParams)
+	{
+	CMMFMP3To16PcmCodec* self=new(ELeave) CMMFMP3To16PcmCodec();
+	CleanupStack::PushL(self);
+	self->ConstructL(aInitParams);
+	CleanupStack::Pop(self);
+	return STATIC_CAST( CMMFCodec*, self );
+	}
+
+CMMFMP3To16PcmCodec::~CMMFMP3To16PcmCodec()
+	{
+	}
+
+CMMFMP3To16PcmCodec::CMMFMP3To16PcmCodec()
+	{
+
+	}
+
+void CMMFMP3To16PcmCodec::ConstructL(TAny* /*aInitParams*/)
+	{
+	
+	}
+
+void CMMFMP3To16PcmCodec::ResetL()
+	{
+	}
+
+
+TCodecProcessResult CMMFMP3To16PcmCodec::ProcessL(const CMMFBuffer& aSrc, CMMFBuffer& aDst)
+	{
+
+	TCodecProcessResult result;
+	result.iStatus = TCodecProcessResult::EProcessIncomplete; // dest full
+	result.iSrcBytesProcessed = 0;
+	result.iDstBytesAdded = 0;
+
+	// convert from generic CMMFBuffer to CMMFDataBuffer
+	const CMMFDataBuffer* src = STATIC_CAST(const CMMFDataBuffer*, &aSrc);
+	CMMFDataBuffer* dst = STATIC_CAST(CMMFDataBuffer*, &aDst);
+
+	TUint srcLen = src->Data().Length() - src->Position();
+	TUint dstMaxLen = dst->Data().MaxLength() - dst->Position();
+	TUint dstLen = dstMaxLen;
+	
+	dst->Data().SetLength(0);
+
+	if (srcLen == 0)
+		{
+		result.iStatus = TCodecProcessResult::EDstNotFilled;	// get some more source data
+		}
+	else
+		{
+		TPtrC8 srcPtrC(src->Data().Ptr(), dstLen);
+
+		dst->Data() = srcPtrC;
+		
+		result.iSrcBytesProcessed = srcLen;
+		result.iDstBytesAdded = dst->Data().Length();
+		result.iStatus = TCodecProcessResult::EProcessIncomplete; // dest full
+		}
+
+	return result;
+	}
+
+
+// __________________________________________________________________________
+// Exported proxy for instantiation method resolution
+// Define the interface UIDs
+
+
+const TImplementationProxy ImplementationTable[] = 
+	{
+		IMPLEMENTATION_PROXY_ENTRY(KUidMP3ImplementationCodec,	CMMFMP3To16PcmCodec::NewL)
+	};
+
+
+
+EXPORT_C const TImplementationProxy* ImplementationGroupProxy(TInt& aTableCount)
+	{
+	aTableCount = sizeof(ImplementationTable) / sizeof(TImplementationProxy);
+
+	return ImplementationTable;
+	}
+