diff -r 000000000000 -r a2952bb97e68 mpx/playbackframework/playbackserver/inc/mpxplaybackserver.h
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/mpx/playbackframework/playbackserver/inc/mpxplaybackserver.h	Thu Dec 17 08:55:47 2009 +0200
@@ -0,0 +1,193 @@
+/*
+* Copyright (c) 2004 Nokia Corporation and/or its subsidiary(-ies).
+* All rights reserved.
+* This component and the accompanying materials are made available
+* under the terms of "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:  Playback server
+*
+*/
+
+
+#ifndef CMPXPLAYBACKSERVER_H
+#define CMPXPLAYBACKSERVER_H
+
+#include <e32base.h>
+#include "mpxclientlistobserver.h"
+#include "mpxplaybackserverdefs.h"
+#include "mpxplaybackactiveengineobserver.h"
+
+class CMPXPlaybackEngine;
+class CMPXMessageQueue;
+class CTspClientMapper;
+class CMPXPluginMonitor;
+
+/**
+* Music playback server
+*/
+NONSHARABLE_CLASS(CMPXPlaybackServer) : public CPolicyServer,
+                                        public MMPXPlaybackActiveEngineObserver,
+                                        public MMPXClientlistObserver
+    {
+public:
+
+    /**
+    *  Two-phased constructor. Leaves on failure.
+    *
+    *  @return The constructed object
+    */
+    static CMPXPlaybackServer* NewL();
+
+    /**
+    *  Destructor
+    */
+    ~CMPXPlaybackServer();
+
+    /**
+    *  Create a player for a specific client, or returns an existing player
+    *  depending on the mode and whether it already exists.
+    *
+    *  @param aModeId playback mode id
+    *  @param aClientId thread id of the client
+    *  @aMsgQueue message queue for the client
+    *  @leave The function leaves with one of the system wide error codes,
+    *         if the operation fails.
+    */
+    CMPXPlaybackEngine* CreatePlayerL(const TUid& aModeId,
+                                      const TInt aCategory, 
+                                      TThreadId aClientId,
+                                      CMPXMessageQueue* aMsgQueue);
+
+    /**
+    * Increments number of sessions this server holds
+    */
+    void AddClient();
+
+    /**
+    *  Decrements number of sessions this server holds, and if now zero, shuts
+    *  down server. ALSO removes client from player, and if the player has no
+    *  more clients, it gets deleted.
+    *
+    *  @param aMsgQueue message queue for the client
+    */
+    void RemoveClient(const CMPXMessageQueue& aMsgQueue);
+
+    /**
+     *  Retursn last active process id
+     *
+     *  @return process id of last active process
+     */
+    TProcessId LastActiveProcessId();
+
+private:
+
+    /**
+    *  Add a new player
+    *
+    *  @param aClientId thread id of the client
+    *  @param aModeId playback mode id
+    *  @aMsgQueue message queue for the client
+	*  @param aCategory category of engine
+    *  @leave The function leaves with one of the system wide error codes,
+    *         if the operation fails.
+    *  @return pointer to engine
+    */
+    CMPXPlaybackEngine* AddNewPlayerL(TThreadId aClientId,
+                                      const TUid& aModeId,
+                                      CMPXMessageQueue* aMsgQueue,
+                                      const TInt aCategory); 
+
+    /**
+    *  Attach to a default player within the same thread
+    *
+    *  @param aClientId thread id of the client which attachs to existing player
+    *  @aMsgQueue message queue for the client
+	*  @param aCategory category of engine
+    *  @leave The function leaves with one of the system wide error codes,
+    *         if the operation fails.
+    *  @return pointer to engine or NULL if not found
+    */
+    CMPXPlaybackEngine* AddToDefaultPlayerL(TThreadId aClientId,
+                                            CMPXMessageQueue* aMsgQueue,
+                                            const TInt aCategory); 
+
+    /**
+     *  Returns index of recent active player
+     *
+     *  @leave The function leaves with one of the system wide error codes,
+     *         if the operation fails.
+     *  @return index to recent active player, KErrNotFound if not found
+     */
+     TInt IndexOfRecentActivePlayer();
+
+	 /**
+     *  Returns index of recent active player
+     *	@param aCategory category of engine
+     *  @leave The function leaves with one of the system wide error codes,
+     *         if the operation fails.
+     *  @return index to recent active player, KErrNotFound if not found
+     */
+     TInt IndexOfRecentActivePlayer(TInt aCategory);
+
+private:
+
+    /**
+    *  C++ constructor
+    *
+    *  @param aPriority  priority of server
+    *  @param aPolicy security policy
+    */
+    CMPXPlaybackServer(TInt aPriority, const TPolicy &aPolicy);
+
+    /**
+    *  2nd phase constructor
+    */
+    void ConstructL();
+
+private: // from base class
+    /**
+    *   From MMPXPlaybackActiveEngineObserver
+    *   Handle active engine
+    *
+    *   @param aEngine pointer to active engine
+    *   @param aActive ETrue activated, EFalse deactivated
+    */
+    void HandleActiveEngineL(const CMPXPlaybackEngine* aEngine, TBool aActive);
+
+    /**
+    *  From CPolicyServer/CServer2
+    *  Create a new session
+    *
+    *  @param aVersion version of the server
+    *  @param aMessage message object
+    */
+    CSession2* NewSessionL(const TVersion& aVersion,
+                           const RMessage2& aMessage) const;
+
+    /**
+     *  From MMPXClientlistObserver
+     *  Observer client change
+     */
+    void HandleClientChange(const TProcessId& aPid,
+                            MMPXClientlistObserver::TChangeType aChangeType);
+
+private:
+    // The players are sorted by the time activated. In other word, the last
+    // active player is always the first item.
+    RPointerArray<CMPXPlaybackEngine> iPlayers;
+    TInt iClients;
+    CMPXPluginMonitor* iPluginMonitor;
+#ifdef RD_TSP_CLIENT_MAPPER
+    CTspClientMapper* iClientMapper;
+#endif
+    };
+
+#endif // CMPXPLAYBACKSERVER_H
+