--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/contentmgmt/cafstreamingsupport/inc/streamagentresolver.h	Mon Mar 15 12:46:43 2010 +0200
@@ -0,0 +1,103 @@
+// Copyright (c) 2007-2009 Nokia Corporation and/or its subsidiary(-ies).
+// All rights reserved.
+// This component and the accompanying materials are made available
+// under the terms of the License "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
+ @internalComponent
+ @released
+*/
+
+#ifndef STREAMAGENTRESOLVER_H
+#define STREAMAGENTRESOLVER_H
+
+#include <e32base.h>
+#include <ecom/ecom.h>
+#include "streamagentinfo.h"
+
+namespace StreamAccess
+	{
+	
+	class CStreamAgentInfo;
+	
+	/**
+	 * Responsible for the identification of stream agent ECOM plug-in implementations and
+	 * the selection of the most appropriate agent based on the key stream session description
+	 * metadata and plug-in resource file information. 
+	 */
+	class CStreamAgentResolver : public CBase
+		{
+	public:
+	
+		/* Constructs a new instance of CStreamAgentResolver and pushs it onto the cleanup stack
+		 * @return Pointer to the new CStreamAgentResolver object
+		 */
+		static CStreamAgentResolver* NewLC();
+		
+		/* Destructor
+		 */
+		~CStreamAgentResolver();
+		
+		/* Resolves a stream agent by the SDP (Session Description Protocol) media description
+		 * of the key stream.
+		 * @param aSdpKeyStream SDP media description of the key stream
+		 * @return Reference to the CStreamAgentInfo instance for the chosen Stream Agent, capable
+		 * of decoding the key stream. 
+		 * NOTE: The lifetime of the returned reference is limited by the lifetime of the resolver. 
+		 * The CStreamAgentInfo reference cannot be used after the CStreamAgentResolver object is
+		 * destroyed.
+		 * @leave KErrCANoAgent No stream agent can be found that supports the given SDP key management
+		 * description
+		 * @leave One of the system-wide error codes
+		 */
+		CStreamAgentInfo& ResolveSdpKeyStreamL(const CSdpMediaField& aSdpKeyStream) const;
+		
+	protected:
+		
+		/* Constructor
+	 	*/
+		CStreamAgentResolver();
+	
+		/* Second phase of construction for CStreamAgentResolver 
+		 */
+		void ConstructL();
+		
+	private:
+	
+		/* Constructs a list of information about plug-in implementations located
+		 * by the ECOM framework that satisfy the stream agent interface.
+		 */
+		void BuildStreamAgentListL();
+		
+		/* Adds a new instance of a stream agent to the CStreamAgentInfo array
+		 * @param aAgentInfo Registration data regarding the stream agent interface implementation,
+		 * retrieved from the associated resource file
+		 */
+		void AddStreamAgentL(const CImplementationInformation& aAgentInfo);
+			
+		/* Cleanup Item Operation used when constructing the stream agent list via ECOM
+		 * @param aArray Pointer to an RImplInfoPtrArray array which is used by ECOM to store 
+		 * information about located stream agents implementations
+		 */ 
+		static void CleanAgentImplArray(TAny* aArray);
+		
+	private:
+		
+		/* Array of information regarding stream agent interface implementations located by ECOM
+		 */
+		RPointerArray<CStreamAgentInfo> iStreamAgentInfoArray;
+		
+		};
+	} // namespace StreamAccess
+#endif /*STREAMAGENTRESOLVER_H*/