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// Copyright (c) 2007-2009 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 the License "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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@internalComponent
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@released
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*/
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#ifndef STREAMAGENTINFO_H
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#define STREAMAGENTINFO_H
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#include <e32base.h>
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class CImplementationInformation;
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class CSdpMediaField;
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namespace StreamAccess
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{
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class CStreamAgentFactory;
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/* Stores information regarding a Stream Agent interface plug-in implementation.
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*
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* Registration data from the plug-in's resource file and details about the
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* agents decryption capabilities are contained so that the stream agents credentials
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* can be obtained without the need to instantiate an instantce of it.
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*
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* If an instance of the agent is required, the StreamAgentFactoryL() method provides a
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* handle to it's factory object.
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*/
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class CStreamAgentInfo : public CBase
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{
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public:
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/* Constructs a new instance of CStreamAgentInfo and pushs it onto the cleanup stack
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* @param aImplementationInfo Contains regristration information relating to the stream
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* agent interface implementation
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* @return Pointer to the new CStreamAgentInfo object
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*/
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static CStreamAgentInfo* NewLC(const CImplementationInformation& aImplementationInfo);
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/* Destructor
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*/
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~CStreamAgentInfo();
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/* Returns the name of the stream agent plug-in implementation
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* @return Name of the steam agent interface implementation
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*/
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const TDesC& Name() const;
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/* Returns the implementation UID of the stream agent plug-in DLL
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* @return Implementation UID of the stream agent plug-in DLL
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*/
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TUid ImplementationUid() const;
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/* Determines whether the stream agent is capable of decoding the specified key stream
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* @param aSdpKeyStream Conatins the metadata for SDP key management scheme of the stream
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* @return ETrue if the stream agent recognises the SDP format and is able to
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* decode the key stream
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* @return EFalse if the stream agent fails to recognise the SDP format or is unable to
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* decode the key stream
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*/
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TBool IsKeyStreamSupportedL(const CSdpMediaField& aSdpKeyStream) const;
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/* Returns a handle to the stream agents factory.
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*
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* The factory is instantiated once and can then be called many times. This method
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* DOES NOT transfer ownership of the factory to the calling client.
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*
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* @return Reference to the CStreamAgentFactory instance
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*/
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CStreamAgentFactory& StreamAgentFactory() const;
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protected:
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/* Constructor
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*/
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CStreamAgentInfo();
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/* Second phase of construction for CStreamAgentInfo
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* @param aImplementationInfo Contains registration information relating to the stream
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* agent interface implementation
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*/
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void ConstructL(const CImplementationInformation& aImplementationInfo);
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private:
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/* Name of the stream agent plug-in implementation
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*/
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HBufC* iName;
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/* Implementation UID of the stream agent plug-in DLL
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*/
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TUid iImplementationUid;
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/* Stream agent factory handle used to generate instances of the agent key stream decoder
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*/
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CStreamAgentFactory* iStreamAgentFactory;
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// ECOM session key. This is set by REComSession::CreateImplementationL() during construction
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TUid iEcomKey;
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};
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} // namespace StreamAccess
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#endif /*STREAMAGENTINFO_H*/
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