--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/mmappfw_plat/playlist_engine_api/inc/mpxplaylistengineobserver.h	Thu Dec 17 08:55:47 2009 +0200
@@ -0,0 +1,90 @@
+/*
+* Copyright (c) 2006 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:  Playlist engine observer
+*
+*/
+
+
+#ifndef MMPXPLAYLISTENGINEOBSERVER_H
+#define MMPXPLAYLISTENGINEOBSERVER_H
+
+
+#include <mpxmedia.h>
+
+/**
+*  A playlist engine client must implement this
+*  observer interface for InternalizePlaylistL and/or ExternalizePlaylistL callback.
+*
+*  @lib mpxplaylistengine.lib
+*/
+NONSHARABLE_CLASS(MMPXPlaylistEngineObserver) 
+    {
+    public:
+    
+        /**
+        *  Callback when Internalize Playlist request is completed. This operation cannot
+        *  be a long running task as this may be invoked from the RunL of a plugin.
+        *
+        *  Parameters are only available for the duration of this method. If a client
+        *  requires them to be available beyond the completion of this method, a copy
+        *  should be made.
+        *
+        * @param aPlaylist a playlist parsed from the playlist file. Depending on the
+        *        content of the playlist, not all info for a media will be available;
+        *        only the available info from playlist file is populated, e.g. for
+        *        m3u playlists, the only available information is URI of the media and
+        *        its title if it's in extended format.
+        *
+        *        This media will contain the following attributes if no error has occured:
+        *
+        *            EMPXMediaGeneralUri for the playlist
+        *            EMPXMediaGeneralType, which has a value of EMPXItem
+        *            EMPXMediaGeneralCategory, which has a value of EMPXPlaylist
+        *            EMPXMediaArrayContents
+        *            EMPXMediaArrayCount
+        *
+        *        When an error occurs, this is NULL.
+        *
+        *        Client takes over the ownership of this CMPXMedia object.
+        *
+        *  @param aError error code   
+        *
+        *  @param aCompleted a flag that indicates if internalize playlist command has
+        *         been fully processed. EFalse if not. In this case, there will be
+        *         subsequent calls to HandlePlaylistL for the same playlist with the
+        *         segmented results. ETrue if there are no more results to be sent to
+        *         the observer.
+        */
+        virtual void HandlePlaylistL(CMPXMedia* aPlaylist,
+                                     const TInt aError,
+                                     const TBool aCompleted) = 0;
+
+        /**
+        *  Callback when Externalize Playlist request is completed. This operation cannot
+        *  be long running task as this may be in invoked from the RunL of a plugin.
+        *
+        *  Parameters are only available for the duration of this method. If a client
+        *  requires them to be available beyond the completion of this method, a copy
+        *  should be made.
+        *
+        *  @param aPlaylistUri URI for the playlist which has been externalized.
+        *  @param aError error code    
+        */
+        virtual void HandlePlaylistL(const TDesC& aPlaylistUri,
+                                     const TInt aError) = 0;        
+    };
+
+#endif      // MMPXPLAYLISTPLUGINOBSERVER_H
+
+