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// Copyright (c) 2005-2009 Nokia Corporation and/or its subsidiary(-ies).
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// All rights reserved.
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// This component and the accompanying materials are made available
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// under the terms of "Eclipse Public License v1.0"
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// which accompanies this distribution, and is available
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// at the URL "http://www.eclipse.org/legal/epl-v10.html".
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//
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// Initial Contributors:
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// Nokia Corporation - initial contribution.
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//
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// Contributors:
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//
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// Description:
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//
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/**
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@file
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@publishedPartner
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@released
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*/
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#ifndef MDFPULOADER_H
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#define MDFPULOADER_H
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#include <e32base.h>
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class MMdfInputPort;
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class MMdfOutputPort;
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class CMdfProcessingUnit;
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class MMdfProcessingUnitObserver;
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class TFourCC;
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/**
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Utility class used by the HwDevice to load Processing Units.
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*/
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class CMdfPuLoader : public CBase
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{
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public:
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/**
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Constructs an instance of the ECom plugin.
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@param aImplementationUid
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ECom implementation UID.
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@return A pointer to the newly constructed object
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*/
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inline static CMdfPuLoader* NewL(TUid aImplementationUid);
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/**
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Loads a Processing Unit using a UID synchronously.
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@param aProcessingUnitObserver
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The observer for the newly loaded Processing Unit.
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@param aImplementationUid
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ECom implementation UID.
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@return A pointer to the newly loaded Processing Unit.
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*/
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virtual CMdfProcessingUnit* LoadProcessingUnitL(const MMdfProcessingUnitObserver& aProcessingUnitObserver,
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TUid aImplementationUid) = 0;
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/**
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Loads an audio Processing Unit synchronously. The Processing Unit is
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resolved according to the source and destination data types provided.
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@param aProcessingUnitObserver
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The observer for the newly loaded Processing Unit.
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@param aSrcDataType
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The source data type.
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@param aDestDataType
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The destination data type.
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@return A pointer to the newly loaded Processing Unit.
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*/
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virtual CMdfProcessingUnit* LoadProcessingUnitL( const MMdfProcessingUnitObserver& aProcessingUnitObserver,
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TFourCC aSrcDataType, TFourCC aDestDataType) = 0;
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/**
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Loads a video Processing Unit synchronously. The Processing Unit is
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resolved according to the source and destination data types provided.
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@param aProcessingUnitObserver
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The observer for the newly loaded Processing Unit.
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@param aSrcDataType
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The source data type.
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@param aDestDataType
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The destination data type.
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@param aImplementationType
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The implementation type. Can be audio, video encoding or video decoding.
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@return A pointer to the newly loaded Processing Unit.
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*/
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virtual CMdfProcessingUnit* LoadProcessingUnitL( const MMdfProcessingUnitObserver& aProcessingUnitObserver,
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const TDesC8& aSrcDataType, const TDesC8& aDestDataType, const TUid& aImplementationType) = 0;
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/**
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Attempts to set-up a tunnel from a given output port to an input port.
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The data flow is from the output port to the input port. This method is synchronous.
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@param aOutputPort
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The output port of the tunnel.
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@param aInputPort
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The input port of the tunnel.
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@return An error code indicating if the function call was successful. KErrNone on success, otherwise
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another of the system-wide error codes.
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*/
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virtual TInt TunnelSetup(MMdfOutputPort& aOutputPort, MMdfInputPort& aInputPort) = 0;
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/**
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Unloads a Processing Unit synchronously.
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@param aPu
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The pointer to the Processing Unit to be unloaded.
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*/
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virtual void UnloadProcessingUnit(CMdfProcessingUnit*& aPu) = 0;
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/**
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Standard destructor.
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*/
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virtual inline ~CMdfPuLoader();
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private:
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TUid iDtor_ID_Key;
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};
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#include <mdf/mdfpuloader.inl>
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#endif // MDFPULOADER_H
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