--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/mmdevicefw/mdf/src/codecapi/puloader.cpp	Tue Feb 02 01:56:55 2010 +0200
@@ -0,0 +1,153 @@
+// Copyright (c) 2005-2009 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:
+//
+
+/**
+ @file
+ @publishedPartner
+ @prototype
+*/
+
+#include <mdf/mdfprocessingunit.h>
+#include <mmf/common/mmfutilities.h>
+#include "puloader.h"
+#include <mdf/codecapiresolverdata.h>
+#include <mdf/codecapiuids.hrh>
+#include <mdf/codecapiresolver.hrh>
+#include <mm/mmcleanup.h>
+#include <ecom/ecom.h>
+
+static const TInt KMaxDataTypeLength = 126;
+
+CPuLoader* CPuLoader::NewL()
+	{
+	CPuLoader* self = new (ELeave) CPuLoader;
+	return self;
+	}
+
+
+CMdfProcessingUnit* CPuLoader::LoadProcessingUnitL(const MMdfProcessingUnitObserver& aProcessingUnitObserver, 
+		TUid aImplementationUid)
+	{
+	CMdfProcessingUnit* pu = NULL;
+	pu = CMdfProcessingUnit::NewL(aImplementationUid);
+	CleanupStack::PushL(pu);
+	User::LeaveIfError(pu->Create(aProcessingUnitObserver));
+	CleanupStack::Pop(pu);
+	return pu;
+	}
+	
+CMdfProcessingUnit* CPuLoader::LoadProcessingUnitL( const MMdfProcessingUnitObserver& aProcessingUnitObserver, 
+		const TDesC8& aSrcDataType, const TDesC8& aDestDataType, const TUid& aImplementationType) 
+	{
+	CCodecApiResolverData* customMatchData = CCodecApiResolverData::NewLC();
+	customMatchData->SetMatchType(EMatchInputAndOutputDataFormat);
+	customMatchData->SetImplementationType(aImplementationType);
+	// string value of the input source data	
+	customMatchData->SetInputDataL(aSrcDataType);
+	customMatchData->SetOutputDataL(aDestDataType);
+	
+ 	HBufC8* package  = customMatchData->NewPackLC();
+
+	TEComResolverParams resolverParams; // Parameters on which to match
+	resolverParams.SetDataType(package->Des());
+	
+	RImplInfoPtrArray ecomArray;
+	CleanupResetAndDestroyPushL(ecomArray);
+
+	REComSession::ListImplementationsL(TUid::Uid(KUidMdfProcessingUnit), resolverParams, TUid::Uid(KUidCodecApiResolverImplementation), ecomArray);
+	
+	// check if there are any 
+	TInt noOfProcessingUnits = ecomArray.Count();
+
+	if(noOfProcessingUnits == 0)
+		{
+		User::Leave(KErrNotFound);
+		}
+
+	CMdfProcessingUnit *processingUnit = NULL;
+	TInt index = 0;
+	TInt error = KErrNone;
+	do
+		{
+		// Iterate through the array until a plugin can be created without errors
+		const CImplementationInformation& puInfo = *(ecomArray[index++]);
+		
+		TRAP(error, processingUnit = CMdfProcessingUnit::NewL(puInfo.ImplementationUid()));
+		}
+	while(index < noOfProcessingUnits && error != KErrNone);
+
+	if(error)
+		{
+		ASSERT(!processingUnit && index <= noOfProcessingUnits);
+		User::Leave(error);
+		}
+
+	CleanupStack::PopAndDestroy(3, customMatchData); // customMatchData, package, ecomArray	
+
+		
+	TInt err = processingUnit->Create(aProcessingUnitObserver);
+	if (err != KErrNone)
+		{
+		// delete processing unit before leaving
+		delete processingUnit;
+		User::Leave(err);
+		}
+	return processingUnit;
+	}
+	
+CMdfProcessingUnit* CPuLoader::LoadProcessingUnitL( const MMdfProcessingUnitObserver& aProcessingUnitObserver, 
+		TFourCC aSrcDataType, TFourCC aDestDataType)
+	{
+	HBufC8* packageSrcDataType = HBufC8::NewLC(KMaxDataTypeLength);
+	TPtr8 sourceDataType = packageSrcDataType->Des();
+	aSrcDataType.FourCC(&sourceDataType);
+			
+	HBufC8* packageDestDataType = HBufC8::NewLC(KMaxDataTypeLength);
+	TPtr8 destinationDataType = packageDestDataType->Des();
+	aDestDataType.FourCC(&destinationDataType);
+	
+	CMdfProcessingUnit* processingUnit = LoadProcessingUnitL(aProcessingUnitObserver, sourceDataType, destinationDataType, TUid::Uid(KUidAudioCodec));
+	CleanupStack::PopAndDestroy(2, packageSrcDataType);
+	return processingUnit;
+	}
+
+
+TInt CPuLoader::TunnelSetup(MMdfOutputPort& aOutputPort, MMdfInputPort& aInputPort)
+	{
+	TTunnelFlags tunnelFlags = EBufferReadOnly;
+	TSupplierType supplierType = EBufferSupplyUnspecified;
+	TUint error = KErrNone;
+	 
+	if ((error = aOutputPort.MopTunnelRequest(aInputPort, tunnelFlags, supplierType)) != KErrNone)
+		{
+	 	return error;
+	 	}
+	return aInputPort.MipTunnelRequest(aOutputPort,tunnelFlags,supplierType);
+	}
+	
+
+void CPuLoader::UnloadProcessingUnit(CMdfProcessingUnit*& aPu)
+	{
+	delete aPu;
+	aPu = NULL;
+	}
+	
+CPuLoader::CPuLoader()
+	{
+	}
+
+CPuLoader::~CPuLoader()
+	{
+	}