1.1 --- /dev/null	Thu Jan 01 00:00:00 1970 +0000
     1.2 +++ b/os/mm/mmdevicefw/mdf/src/codecapi/puloader.cpp	Fri Jun 15 03:10:57 2012 +0200
     1.3 @@ -0,0 +1,153 @@
     1.4 +// Copyright (c) 2005-2009 Nokia Corporation and/or its subsidiary(-ies).
     1.5 +// All rights reserved.
     1.6 +// This component and the accompanying materials are made available
     1.7 +// under the terms of "Eclipse Public License v1.0"
     1.8 +// which accompanies this distribution, and is available
     1.9 +// at the URL "http://www.eclipse.org/legal/epl-v10.html".
    1.10 +//
    1.11 +// Initial Contributors:
    1.12 +// Nokia Corporation - initial contribution.
    1.13 +//
    1.14 +// Contributors:
    1.15 +//
    1.16 +// Description:
    1.17 +//
    1.18 +
    1.19 +/**
    1.20 + @file
    1.21 + @publishedPartner
    1.22 + @prototype
    1.23 +*/
    1.24 +
    1.25 +#include <mdf/mdfprocessingunit.h>
    1.26 +#include <mmf/common/mmfutilities.h>
    1.27 +#include "puloader.h"
    1.28 +#include <mdf/codecapiresolverdata.h>
    1.29 +#include <mdf/codecapiuids.hrh>
    1.30 +#include <mdf/codecapiresolver.hrh>
    1.31 +#include <mm/mmcleanup.h>
    1.32 +#include <ecom/ecom.h>
    1.33 +
    1.34 +static const TInt KMaxDataTypeLength = 126;
    1.35 +
    1.36 +CPuLoader* CPuLoader::NewL()
    1.37 +	{
    1.38 +	CPuLoader* self = new (ELeave) CPuLoader;
    1.39 +	return self;
    1.40 +	}
    1.41 +
    1.42 +
    1.43 +CMdfProcessingUnit* CPuLoader::LoadProcessingUnitL(const MMdfProcessingUnitObserver& aProcessingUnitObserver, 
    1.44 +		TUid aImplementationUid)
    1.45 +	{
    1.46 +	CMdfProcessingUnit* pu = NULL;
    1.47 +	pu = CMdfProcessingUnit::NewL(aImplementationUid);
    1.48 +	CleanupStack::PushL(pu);
    1.49 +	User::LeaveIfError(pu->Create(aProcessingUnitObserver));
    1.50 +	CleanupStack::Pop(pu);
    1.51 +	return pu;
    1.52 +	}
    1.53 +	
    1.54 +CMdfProcessingUnit* CPuLoader::LoadProcessingUnitL( const MMdfProcessingUnitObserver& aProcessingUnitObserver, 
    1.55 +		const TDesC8& aSrcDataType, const TDesC8& aDestDataType, const TUid& aImplementationType) 
    1.56 +	{
    1.57 +	CCodecApiResolverData* customMatchData = CCodecApiResolverData::NewLC();
    1.58 +	customMatchData->SetMatchType(EMatchInputAndOutputDataFormat);
    1.59 +	customMatchData->SetImplementationType(aImplementationType);
    1.60 +	// string value of the input source data	
    1.61 +	customMatchData->SetInputDataL(aSrcDataType);
    1.62 +	customMatchData->SetOutputDataL(aDestDataType);
    1.63 +	
    1.64 + 	HBufC8* package  = customMatchData->NewPackLC();
    1.65 +
    1.66 +	TEComResolverParams resolverParams; // Parameters on which to match
    1.67 +	resolverParams.SetDataType(package->Des());
    1.68 +	
    1.69 +	RImplInfoPtrArray ecomArray;
    1.70 +	CleanupResetAndDestroyPushL(ecomArray);
    1.71 +
    1.72 +	REComSession::ListImplementationsL(TUid::Uid(KUidMdfProcessingUnit), resolverParams, TUid::Uid(KUidCodecApiResolverImplementation), ecomArray);
    1.73 +	
    1.74 +	// check if there are any 
    1.75 +	TInt noOfProcessingUnits = ecomArray.Count();
    1.76 +
    1.77 +	if(noOfProcessingUnits == 0)
    1.78 +		{
    1.79 +		User::Leave(KErrNotFound);
    1.80 +		}
    1.81 +
    1.82 +	CMdfProcessingUnit *processingUnit = NULL;
    1.83 +	TInt index = 0;
    1.84 +	TInt error = KErrNone;
    1.85 +	do
    1.86 +		{
    1.87 +		// Iterate through the array until a plugin can be created without errors
    1.88 +		const CImplementationInformation& puInfo = *(ecomArray[index++]);
    1.89 +		
    1.90 +		TRAP(error, processingUnit = CMdfProcessingUnit::NewL(puInfo.ImplementationUid()));
    1.91 +		}
    1.92 +	while(index < noOfProcessingUnits && error != KErrNone);
    1.93 +
    1.94 +	if(error)
    1.95 +		{
    1.96 +		ASSERT(!processingUnit && index <= noOfProcessingUnits);
    1.97 +		User::Leave(error);
    1.98 +		}
    1.99 +
   1.100 +	CleanupStack::PopAndDestroy(3, customMatchData); // customMatchData, package, ecomArray	
   1.101 +
   1.102 +		
   1.103 +	TInt err = processingUnit->Create(aProcessingUnitObserver);
   1.104 +	if (err != KErrNone)
   1.105 +		{
   1.106 +		// delete processing unit before leaving
   1.107 +		delete processingUnit;
   1.108 +		User::Leave(err);
   1.109 +		}
   1.110 +	return processingUnit;
   1.111 +	}
   1.112 +	
   1.113 +CMdfProcessingUnit* CPuLoader::LoadProcessingUnitL( const MMdfProcessingUnitObserver& aProcessingUnitObserver, 
   1.114 +		TFourCC aSrcDataType, TFourCC aDestDataType)
   1.115 +	{
   1.116 +	HBufC8* packageSrcDataType = HBufC8::NewLC(KMaxDataTypeLength);
   1.117 +	TPtr8 sourceDataType = packageSrcDataType->Des();
   1.118 +	aSrcDataType.FourCC(&sourceDataType);
   1.119 +			
   1.120 +	HBufC8* packageDestDataType = HBufC8::NewLC(KMaxDataTypeLength);
   1.121 +	TPtr8 destinationDataType = packageDestDataType->Des();
   1.122 +	aDestDataType.FourCC(&destinationDataType);
   1.123 +	
   1.124 +	CMdfProcessingUnit* processingUnit = LoadProcessingUnitL(aProcessingUnitObserver, sourceDataType, destinationDataType, TUid::Uid(KUidAudioCodec));
   1.125 +	CleanupStack::PopAndDestroy(2, packageSrcDataType);
   1.126 +	return processingUnit;
   1.127 +	}
   1.128 +
   1.129 +
   1.130 +TInt CPuLoader::TunnelSetup(MMdfOutputPort& aOutputPort, MMdfInputPort& aInputPort)
   1.131 +	{
   1.132 +	TTunnelFlags tunnelFlags = EBufferReadOnly;
   1.133 +	TSupplierType supplierType = EBufferSupplyUnspecified;
   1.134 +	TUint error = KErrNone;
   1.135 +	 
   1.136 +	if ((error = aOutputPort.MopTunnelRequest(aInputPort, tunnelFlags, supplierType)) != KErrNone)
   1.137 +		{
   1.138 +	 	return error;
   1.139 +	 	}
   1.140 +	return aInputPort.MipTunnelRequest(aOutputPort,tunnelFlags,supplierType);
   1.141 +	}
   1.142 +	
   1.143 +
   1.144 +void CPuLoader::UnloadProcessingUnit(CMdfProcessingUnit*& aPu)
   1.145 +	{
   1.146 +	delete aPu;
   1.147 +	aPu = NULL;
   1.148 +	}
   1.149 +	
   1.150 +CPuLoader::CPuLoader()
   1.151 +	{
   1.152 +	}
   1.153 +
   1.154 +CPuLoader::~CPuLoader()
   1.155 +	{
   1.156 +	}