1.1 --- /dev/null	Thu Jan 01 00:00:00 1970 +0000
     1.2 +++ b/os/security/contentmgmt/cafstreamingsupport/inc/streamagentresolver.h	Fri Jun 15 03:10:57 2012 +0200
     1.3 @@ -0,0 +1,103 @@
     1.4 +// Copyright (c) 2007-2009 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 the License "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 + @internalComponent
    1.22 + @released
    1.23 +*/
    1.24 +
    1.25 +#ifndef STREAMAGENTRESOLVER_H
    1.26 +#define STREAMAGENTRESOLVER_H
    1.27 +
    1.28 +#include <e32base.h>
    1.29 +#include <ecom/ecom.h>
    1.30 +#include "streamagentinfo.h"
    1.31 +
    1.32 +namespace StreamAccess
    1.33 +	{
    1.34 +	
    1.35 +	class CStreamAgentInfo;
    1.36 +	
    1.37 +	/**
    1.38 +	 * Responsible for the identification of stream agent ECOM plug-in implementations and
    1.39 +	 * the selection of the most appropriate agent based on the key stream session description
    1.40 +	 * metadata and plug-in resource file information. 
    1.41 +	 */
    1.42 +	class CStreamAgentResolver : public CBase
    1.43 +		{
    1.44 +	public:
    1.45 +	
    1.46 +		/* Constructs a new instance of CStreamAgentResolver and pushs it onto the cleanup stack
    1.47 +		 * @return Pointer to the new CStreamAgentResolver object
    1.48 +		 */
    1.49 +		static CStreamAgentResolver* NewLC();
    1.50 +		
    1.51 +		/* Destructor
    1.52 +		 */
    1.53 +		~CStreamAgentResolver();
    1.54 +		
    1.55 +		/* Resolves a stream agent by the SDP (Session Description Protocol) media description
    1.56 +		 * of the key stream.
    1.57 +		 * @param aSdpKeyStream SDP media description of the key stream
    1.58 +		 * @return Reference to the CStreamAgentInfo instance for the chosen Stream Agent, capable
    1.59 +		 * of decoding the key stream. 
    1.60 +		 * NOTE: The lifetime of the returned reference is limited by the lifetime of the resolver. 
    1.61 +		 * The CStreamAgentInfo reference cannot be used after the CStreamAgentResolver object is
    1.62 +		 * destroyed.
    1.63 +		 * @leave KErrCANoAgent No stream agent can be found that supports the given SDP key management
    1.64 +		 * description
    1.65 +		 * @leave One of the system-wide error codes
    1.66 +		 */
    1.67 +		CStreamAgentInfo& ResolveSdpKeyStreamL(const CSdpMediaField& aSdpKeyStream) const;
    1.68 +		
    1.69 +	protected:
    1.70 +		
    1.71 +		/* Constructor
    1.72 +	 	*/
    1.73 +		CStreamAgentResolver();
    1.74 +	
    1.75 +		/* Second phase of construction for CStreamAgentResolver 
    1.76 +		 */
    1.77 +		void ConstructL();
    1.78 +		
    1.79 +	private:
    1.80 +	
    1.81 +		/* Constructs a list of information about plug-in implementations located
    1.82 +		 * by the ECOM framework that satisfy the stream agent interface.
    1.83 +		 */
    1.84 +		void BuildStreamAgentListL();
    1.85 +		
    1.86 +		/* Adds a new instance of a stream agent to the CStreamAgentInfo array
    1.87 +		 * @param aAgentInfo Registration data regarding the stream agent interface implementation,
    1.88 +		 * retrieved from the associated resource file
    1.89 +		 */
    1.90 +		void AddStreamAgentL(const CImplementationInformation& aAgentInfo);
    1.91 +			
    1.92 +		/* Cleanup Item Operation used when constructing the stream agent list via ECOM
    1.93 +		 * @param aArray Pointer to an RImplInfoPtrArray array which is used by ECOM to store 
    1.94 +		 * information about located stream agents implementations
    1.95 +		 */ 
    1.96 +		static void CleanAgentImplArray(TAny* aArray);
    1.97 +		
    1.98 +	private:
    1.99 +		
   1.100 +		/* Array of information regarding stream agent interface implementations located by ECOM
   1.101 +		 */
   1.102 +		RPointerArray<CStreamAgentInfo> iStreamAgentInfoArray;
   1.103 +		
   1.104 +		};
   1.105 +	} // namespace StreamAccess
   1.106 +#endif /*STREAMAGENTRESOLVER_H*/