]> git.sesse.net Git - vlc/blobdiff - modules/control/dbus/dbus.c
vlc_plugin: fix non-LGPL plugins meta infos
[vlc] / modules / control / dbus / dbus.c
index b5ffe53742405c361d1d74c9301b36171896e8f3..0950548d3eb9b5202d3154350927d4f67983ef0b 100644 (file)
@@ -2,12 +2,14 @@
  * dbus.c : D-Bus control interface
  *****************************************************************************
  * Copyright © 2006-2008 Rafaël Carré
- * Copyright © 2007-2010 Mirsal Ennaime
- * Copyright © 2009-2010 The VideoLAN team
+ * Copyright © 2007-2012 Mirsal Ennaime
+ * Copyright © 2009-2012 The VideoLAN team
+ * Copyright © 2013      Alex Merry
  * $Id$
  *
  * Authors:    Rafaël Carré <funman at videolanorg>
  *             Mirsal Ennaime <mirsal at mirsal fr>
+ *             Alex Merry <dev at randomguy3 me uk>
  *
  * This program is free software; you can redistribute it and/or modify
  * it under the terms of the GNU General Public License as published by
 #endif
 
 #include <dbus/dbus.h>
-#include "dbus.h"
 #include "dbus_common.h"
 #include "dbus_root.h"
 #include "dbus_player.h"
 #include "dbus_tracklist.h"
 #include "dbus_introspect.h"
 
+#define VLC_MODULE_LICENSE VLC_LICENSE_GPL_2_PLUS
 #include <vlc_common.h>
 #include <vlc_plugin.h>
 #include <vlc_interface.h>
 #include <vlc_playlist.h>
+#include <vlc_input.h>
 #include <vlc_meta.h>
 #include <vlc_mtime.h>
 #include <vlc_fs.h>
-#include <vlc_aout.h>
 
 #include <assert.h>
+#include <limits.h>
 #include <string.h>
 
 #include <poll.h>
 #include <errno.h>
 #include <unistd.h>
 
+#define DBUS_MPRIS_BUS_NAME "org.mpris.MediaPlayer2.vlc"
+#define DBUS_INSTANCE_ID_PREFIX "instance"
+
+#define SEEK_THRESHOLD 1000 /* µsec */
+
 /*****************************************************************************
  * Local prototypes.
  *****************************************************************************/
 
+static DBusHandlerResult
+MPRISEntryPoint ( DBusConnection *p_conn, DBusMessage *p_from, void *p_this );
+
+static const DBusObjectPathVTable dbus_mpris_vtable = {
+        NULL, MPRISEntryPoint, /* handler function */
+        NULL, NULL, NULL, NULL
+};
+
 typedef struct
 {
     int signal;
@@ -79,12 +95,6 @@ typedef struct
     int i_item;
 } callback_info_t;
 
-typedef struct
-{
-    mtime_t      i_remaining;
-    DBusTimeout *p_timeout;
-} timeout_info_t;
-
 enum
 {
     PIPE_OUT = 0,
@@ -93,29 +103,22 @@ enum
 
 static int  Open    ( vlc_object_t * );
 static void Close   ( vlc_object_t * );
-static void Run     ( intf_thread_t * );
+static void *Run    ( void * );
 
 static int TrackChange( intf_thread_t * );
 static int AllCallback( vlc_object_t*, const char*, vlc_value_t, vlc_value_t, void* );
+static int InputCallback( vlc_object_t*, const char*, vlc_value_t, vlc_value_t, void* );
 
-static void dispatch_status_cb( DBusConnection *p_conn,
-                                DBusDispatchStatus i_status,
-                                void *p_data);
+static dbus_bool_t add_timeout(DBusTimeout *, void *);
+static void remove_timeout(DBusTimeout *, void *);
+static void toggle_timeout(DBusTimeout *, void *);
 
-static dbus_bool_t add_timeout ( DBusTimeout *p_timeout, void *p_data );
 static dbus_bool_t add_watch   ( DBusWatch *p_watch, void *p_data );
-
-static void remove_timeout  ( DBusTimeout *p_timeout, void *p_data );
 static void remove_watch    ( DBusWatch *p_watch, void *p_data );
-
-static void timeout_toggled ( DBusTimeout *p_timeout, void *p_data );
 static void watch_toggled   ( DBusWatch *p_watch, void *p_data );
 
 static void wakeup_main_loop( void *p_data );
 
-static int GetPollFds( intf_thread_t *p_intf, struct pollfd *p_fds );
-static int UpdateTimeouts( intf_thread_t *p_intf, mtime_t i_lastrun );
-
 static void ProcessEvents  ( intf_thread_t    *p_intf,
                              callback_info_t **p_events,
                              int               i_events );
@@ -126,29 +129,17 @@ static void ProcessWatches ( intf_thread_t    *p_intf,
                              struct pollfd    *p_fds,
                              int               i_fds );
 
-static void ProcessTimeouts( intf_thread_t    *p_intf,
-                             DBusTimeout     **p_timeouts,
-                             int               i_timeouts );
-
 static void DispatchDBusMessages( intf_thread_t *p_intf );
 
 /*****************************************************************************
  * Module descriptor
  *****************************************************************************/
-#define DBUS_UNIQUE_TEXT N_("Unique DBUS service id (org.mpris.vlc-<pid>)")
-#define DBUS_UNIQUE_LONGTEXT N_( \
-    "Use a unique dbus service id to identify this VLC instance on the DBUS bus. " \
-    "The process identifier (PID) is added to the service name: org.mpris.vlc-<pid>" )
-
 vlc_module_begin ()
-    set_shortname( N_("dbus"))
+    set_shortname( N_("DBus"))
     set_category( CAT_INTERFACE )
-    set_subcategory( SUBCAT_INTERFACE_CONTROL )
     set_description( N_("D-Bus control interface") )
     set_capability( "interface", 0 )
     set_callbacks( Open, Close )
-    add_bool( "dbus-unique-service-id", false,
-              DBUS_UNIQUE_TEXT, DBUS_UNIQUE_LONGTEXT, true )
 vlc_module_end ()
 
 /*****************************************************************************
@@ -156,22 +147,21 @@ vlc_module_end ()
  *****************************************************************************/
 
 static int Open( vlc_object_t *p_this )
-{ /* initialisation of the connection */
+{
     intf_thread_t   *p_intf = (intf_thread_t*)p_this;
-    intf_sys_t      *p_sys  = malloc( sizeof( intf_sys_t ) );
-    playlist_t      *p_playlist;
-    DBusConnection  *p_conn;
-    DBusError       error;
-    char            *psz_service_name = NULL;
 
-    if( !p_sys || !dbus_threads_init_default())
+    /* initialisation of the connection */
+    if( !dbus_threads_init_default() )
+        return VLC_EGENERIC;
+
+    intf_sys_t *p_sys  = calloc( 1, sizeof( intf_sys_t ) );
+    if( unlikely(!p_sys) )
         return VLC_ENOMEM;
 
-    p_sys->b_meta_read     = false;
-    p_sys->b_dead          = false;
-    p_sys->p_input         = NULL;
+    playlist_t      *p_playlist;
+    DBusConnection  *p_conn;
     p_sys->i_player_caps   = PLAYER_CAPS_NONE;
-    p_sys->i_playing_state = -1;
+    p_sys->i_playing_state = PLAYBACK_STATE_INVALID;
 
     if( vlc_pipe( p_sys->p_pipe_fds ) )
     {
@@ -180,21 +170,7 @@ static int Open( vlc_object_t *p_this )
         return VLC_EGENERIC;
     }
 
-    p_sys->b_unique = var_CreateGetBool( p_intf, "dbus-unique-service-id" );
-    if( p_sys->b_unique )
-    {
-        if( asprintf( &psz_service_name, "%s-%d",
-            DBUS_MPRIS_BUS_NAME, getpid() ) < 0 )
-        {
-            free( p_sys );
-            return VLC_ENOMEM;
-        }
-    }
-    else
-    {
-        psz_service_name = strdup(DBUS_MPRIS_BUS_NAME);
-    }
-
+    DBusError error;
     dbus_error_init( &error );
 
     /* connect privately to the session bus
@@ -206,34 +182,51 @@ static int Open( vlc_object_t *p_this )
         msg_Err( p_this, "Failed to connect to the D-Bus session daemon: %s",
                 error.message );
         dbus_error_free( &error );
-        free( psz_service_name );
+        close( p_sys->p_pipe_fds[1] );
+        close( p_sys->p_pipe_fds[0] );
         free( p_sys );
         return VLC_EGENERIC;
     }
 
     dbus_connection_set_exit_on_disconnect( p_conn, FALSE );
 
-    /* register a well-known name on the bus */
-    dbus_bus_request_name( p_conn, psz_service_name, 0, &error );
+    /* Register the entry point object path */
+    dbus_connection_register_object_path( p_conn, DBUS_MPRIS_OBJECT_PATH,
+            &dbus_mpris_vtable, p_this );
+
+    /* Try to register org.mpris.MediaPlayer2.vlc */
+    dbus_bus_request_name( p_conn, DBUS_MPRIS_BUS_NAME, 0, &error );
     if( dbus_error_is_set( &error ) )
     {
-        msg_Err( p_this, "Error requesting service %s: %s",
-                 psz_service_name, error.message );
+        msg_Dbg( p_this, "Failed to get service name %s: %s",
+                 DBUS_MPRIS_BUS_NAME, error.message );
         dbus_error_free( &error );
-        free( psz_service_name );
-        free( p_sys );
-        return VLC_EGENERIC;
-    }
-    msg_Info( p_intf, "listening on dbus as: %s", psz_service_name );
-    free( psz_service_name );
 
-    /* Register the entry point object path */
-    dbus_connection_register_object_path( p_conn, DBUS_MPRIS_OBJECT_PATH,
-            &dbus_mpris_vtable, p_this );
+        /* Register an instance-specific well known name of the form
+         * org.mpris.MediaPlayer2.vlc.instanceXXXX where XXXX is the
+         * current Process ID */
+        char unique_service[sizeof( DBUS_MPRIS_BUS_NAME ) +
+                            sizeof( DBUS_INSTANCE_ID_PREFIX ) + 10];
+
+        snprintf( unique_service, sizeof (unique_service),
+                  DBUS_MPRIS_BUS_NAME"."DBUS_INSTANCE_ID_PREFIX"%"PRIu32,
+                  (uint32_t)getpid() );
+
+        dbus_bus_request_name( p_conn, unique_service, 0, &error );
+        if( dbus_error_is_set( &error ) )
+        {
+            msg_Err( p_this, "Failed to get service name %s: %s",
+                     DBUS_MPRIS_BUS_NAME, error.message );
+            dbus_error_free( &error );
+        }
+        else
+            msg_Dbg( p_intf, "listening on dbus as: %s", unique_service );
+    }
+    else
+        msg_Dbg( p_intf, "listening on dbus as: %s", DBUS_MPRIS_BUS_NAME );
 
     dbus_connection_flush( p_conn );
 
-    p_intf->pf_run = Run;
     p_intf->p_sys = p_sys;
     p_sys->p_conn = p_conn;
     p_sys->p_events = vlc_array_new();
@@ -244,49 +237,53 @@ static int Open( vlc_object_t *p_this )
     p_playlist = pl_Get( p_intf );
     p_sys->p_playlist = p_playlist;
 
-    var_AddCallback( p_playlist, "item-current", AllCallback, p_intf );
+    var_AddCallback( p_playlist, "input-current", AllCallback, p_intf );
     var_AddCallback( p_playlist, "intf-change", AllCallback, p_intf );
-    var_AddCallback( p_playlist, "volume-change", AllCallback, p_intf );
-    var_AddCallback( p_playlist, "volume-muted", AllCallback, p_intf );
+    var_AddCallback( p_playlist, "volume", AllCallback, p_intf );
+    var_AddCallback( p_playlist, "mute", AllCallback, p_intf );
     var_AddCallback( p_playlist, "playlist-item-append", AllCallback, p_intf );
     var_AddCallback( p_playlist, "playlist-item-deleted", AllCallback, p_intf );
     var_AddCallback( p_playlist, "random", AllCallback, p_intf );
     var_AddCallback( p_playlist, "repeat", AllCallback, p_intf );
     var_AddCallback( p_playlist, "loop", AllCallback, p_intf );
-
-    dbus_connection_set_dispatch_status_function( p_conn,
-                                                  dispatch_status_cb,
-                                                  p_intf, NULL );
+    var_AddCallback( p_playlist, "fullscreen", AllCallback, p_intf );
 
     if( !dbus_connection_set_timeout_functions( p_conn,
                                                 add_timeout,
                                                 remove_timeout,
-                                                timeout_toggled,
+                                                toggle_timeout,
                                                 p_intf, NULL ) )
-    {
-        dbus_connection_unref( p_conn );
-        free( psz_service_name );
-        free( p_sys );
-        return VLC_ENOMEM;
-    }
+        goto error;
 
     if( !dbus_connection_set_watch_functions( p_conn,
                                               add_watch,
                                               remove_watch,
                                               watch_toggled,
                                               p_intf, NULL ) )
-    {
-        dbus_connection_unref( p_conn );
-        free( psz_service_name );
-        free( p_sys );
-        return VLC_ENOMEM;
-    }
+        goto error;
 
-/*     dbus_connection_set_wakeup_main_function( p_conn,
-                                              wakeup_main_loop,
-                                              p_intf, NULL); */
+    if( vlc_clone( &p_sys->thread, Run, p_intf, VLC_THREAD_PRIORITY_LOW ) )
+        goto error;
 
     return VLC_SUCCESS;
+
+error:
+    /* The dbus connection is private,
+     * so we are responsible for closing it
+     * XXX: Does this make sense when OOM ? */
+    dbus_connection_close( p_sys->p_conn );
+    dbus_connection_unref( p_conn );
+
+    vlc_array_destroy( p_sys->p_events );
+    vlc_array_destroy( p_sys->p_timeouts );
+    vlc_array_destroy( p_sys->p_watches );
+
+    vlc_mutex_destroy( &p_sys->lock );
+
+    close( p_sys->p_pipe_fds[1] );
+    close( p_sys->p_pipe_fds[0] );
+    free( p_sys );
+    return VLC_ENOMEM;
 }
 
 /*****************************************************************************
@@ -299,19 +296,23 @@ static void Close   ( vlc_object_t *p_this )
     intf_sys_t      *p_sys      = p_intf->p_sys;
     playlist_t      *p_playlist = p_sys->p_playlist;
 
-    var_DelCallback( p_playlist, "item-current", AllCallback, p_intf );
+    vlc_cancel( p_sys->thread );
+    vlc_join( p_sys->thread, NULL );
+
+    var_DelCallback( p_playlist, "input-current", AllCallback, p_intf );
     var_DelCallback( p_playlist, "intf-change", AllCallback, p_intf );
-    var_DelCallback( p_playlist, "volume-change", AllCallback, p_intf );
-    var_DelCallback( p_playlist, "volume-muted", AllCallback, p_intf );
+    var_DelCallback( p_playlist, "volume", AllCallback, p_intf );
+    var_DelCallback( p_playlist, "mute", AllCallback, p_intf );
     var_DelCallback( p_playlist, "playlist-item-append", AllCallback, p_intf );
     var_DelCallback( p_playlist, "playlist-item-deleted", AllCallback, p_intf );
     var_DelCallback( p_playlist, "random", AllCallback, p_intf );
     var_DelCallback( p_playlist, "repeat", AllCallback, p_intf );
     var_DelCallback( p_playlist, "loop", AllCallback, p_intf );
+    var_DelCallback( p_playlist, "fullscreen", AllCallback, p_intf );
 
     if( p_sys->p_input )
     {
-        var_DelCallback( p_sys->p_input, "intf-event", AllCallback, p_intf );
+        var_DelCallback( p_sys->p_input, "intf-event", InputCallback, p_intf );
         var_DelCallback( p_sys->p_input, "can-pause", AllCallback, p_intf );
         var_DelCallback( p_sys->p_input, "can-seek", AllCallback, p_intf );
         vlc_object_release( p_sys->p_input );
@@ -332,82 +333,125 @@ static void Close   ( vlc_object_t *p_this )
     vlc_array_destroy( p_sys->p_events );
     vlc_array_destroy( p_sys->p_timeouts );
     vlc_array_destroy( p_sys->p_watches );
+    close( p_sys->p_pipe_fds[1] );
+    close( p_sys->p_pipe_fds[0] );
     free( p_sys );
 }
 
-static void dispatch_status_cb( DBusConnection *p_conn,
-                                DBusDispatchStatus i_status,
-                                void *p_data)
+static dbus_bool_t add_timeout(DBusTimeout *to, void *data)
 {
-    (void) p_conn;
-    intf_thread_t *p_intf = (intf_thread_t*) p_data;
+    intf_thread_t *intf = data;
+    intf_sys_t *sys = intf->p_sys;
+
+    mtime_t *expiry = malloc(sizeof (*expiry));
+    if (unlikely(expiry == NULL))
+        return FALSE;
+
+    dbus_timeout_set_data(to, expiry, free);
 
-    static const char *p_statuses[] = { "DATA_REMAINS",
-                                        "COMPLETE",
-                                        "NEED_MEMORY" };
+    vlc_mutex_lock(&sys->lock);
+    vlc_array_append(sys->p_timeouts, to);
+    vlc_mutex_unlock(&sys->lock);
 
-    msg_Dbg( p_intf,
-             "DBus dispatch status changed to %s.",
-             p_statuses[i_status]);
+    return TRUE;
 }
 
-static dbus_bool_t add_timeout( DBusTimeout *p_timeout, void *p_data )
+static void remove_timeout(DBusTimeout *to, void *data)
 {
-    intf_thread_t *p_intf = (intf_thread_t*) p_data;
-    intf_sys_t    *p_sys  = (intf_sys_t*) p_intf->p_sys;
+    intf_thread_t *intf = data;
+    intf_sys_t *sys = intf->p_sys;
+    unsigned idx = vlc_array_index_of_item(sys->p_timeouts, to);
 
-    timeout_info_t *p_info = calloc( 1, sizeof( timeout_info_t ) );
-    p_info->i_remaining = dbus_timeout_get_interval( p_timeout ) * 1000;/* µs */
-    p_info->p_timeout = p_timeout;
+    vlc_mutex_lock(&sys->lock);
+    vlc_array_remove(sys->p_timeouts, idx);
+    vlc_mutex_unlock(&sys->lock);
+}
 
-    dbus_timeout_set_data( p_timeout, p_info, free );
+static void toggle_timeout(DBusTimeout *to, void *data)
+{
+    intf_thread_t *intf = data;
+    intf_sys_t *sys = intf->p_sys;
+    mtime_t *expiry = dbus_timeout_get_data(to);
 
-    vlc_mutex_lock( &p_sys->lock );
-    vlc_array_append( p_sys->p_timeouts, p_timeout );
-    vlc_mutex_unlock( &p_sys->lock );
+    vlc_mutex_lock(&sys->lock);
+    if (dbus_timeout_get_enabled(to))
+        *expiry = mdate() + UINT64_C(1000) * dbus_timeout_get_interval(to);
+    vlc_mutex_unlock(&sys->lock);
 
-    return TRUE;
+    wakeup_main_loop(intf);
 }
 
-static void remove_timeout( DBusTimeout *p_timeout, void *p_data )
+/**
+ * Computes the time until the next timeout expiration.
+ * @note Interface lock must be held.
+ * @return The time in milliseconds until the next expiration,
+ *         or -1 if there are no pending timeouts.
+ */
+static int next_timeout(intf_thread_t *intf)
 {
-    intf_thread_t *p_intf = (intf_thread_t*) p_data;
-    intf_sys_t    *p_sys  = (intf_sys_t*) p_intf->p_sys;
+    intf_sys_t *sys = intf->p_sys;
+    mtime_t next_timeout = LAST_MDATE;
+    unsigned count = vlc_array_count(sys->p_timeouts);
 
-    vlc_mutex_lock( &p_sys->lock );
+    for (unsigned i = 0; i < count; i++)
+    {
+        DBusTimeout *to = vlc_array_item_at_index(sys->p_timeouts, i);
 
-    vlc_array_remove( p_sys->p_timeouts,
-                      vlc_array_index_of_item( p_sys->p_timeouts, p_timeout ) );
+        if (!dbus_timeout_get_enabled(to))
+            continue;
 
-    vlc_mutex_unlock( &p_sys->lock );
+        mtime_t *expiry = dbus_timeout_get_data(to);
+
+        if (next_timeout > *expiry)
+            next_timeout = *expiry;
+    }
+
+    if (next_timeout >= LAST_MDATE)
+        return -1;
+
+    next_timeout /= 1000;
+
+    if (next_timeout > INT_MAX)
+        return INT_MAX;
+
+    return (int)next_timeout;
 }
 
-static void timeout_toggled( DBusTimeout *p_timeout, void *p_data )
+/**
+ * Process pending D-Bus timeouts.
+ *
+ * @note Interface lock must be held.
+ */
+static void process_timeouts(intf_thread_t *intf)
 {
-    intf_thread_t *p_intf = (intf_thread_t*) p_data;
+    intf_sys_t *sys = intf->p_sys;
 
-    msg_Dbg( p_intf, "Toggling dbus timeout" );
-
-    if( dbus_timeout_get_enabled( p_timeout ) )
+    for (int i = 0; i < vlc_array_count(sys->p_timeouts); i++)
     {
-        msg_Dbg( p_intf, "Timeout is enabled, main loop needs to wake up" );
-        wakeup_main_loop( p_intf );
+        DBusTimeout *to = vlc_array_item_at_index(sys->p_timeouts, i);
+
+        if (!dbus_timeout_get_enabled(to))
+            continue;
+
+        mtime_t *expiry = dbus_timeout_get_data(to);
+        if (*expiry > mdate())
+            continue;
+
+        expiry += UINT64_C(1000) * dbus_timeout_get_interval(to);
+        vlc_mutex_unlock(&sys->lock);
+
+        dbus_timeout_handle(to);
+
+        vlc_mutex_lock(&sys->lock);
+        i = -1; /* lost track of state, restart from beginning */
     }
 }
 
+
 static dbus_bool_t add_watch( DBusWatch *p_watch, void *p_data )
 {
     intf_thread_t *p_intf = (intf_thread_t*) p_data;
     intf_sys_t    *p_sys  = (intf_sys_t*) p_intf->p_sys;
-    int            i_fd   = dbus_watch_get_unix_fd( p_watch );
-
-    msg_Dbg( p_intf, "Adding dbus watch on fd %d", i_fd );
-
-    if( dbus_watch_get_flags( p_watch ) & DBUS_WATCH_READABLE )
-        msg_Dbg( p_intf, "Watching fd %d for readability", i_fd );
-
-    if( dbus_watch_get_flags( p_watch ) & DBUS_WATCH_WRITABLE )
-        msg_Dbg( p_intf, "Watching fd %d for writeability", i_fd );
 
     vlc_mutex_lock( &p_sys->lock );
     vlc_array_append( p_sys->p_watches, p_watch );
@@ -421,9 +465,6 @@ static void remove_watch( DBusWatch *p_watch, void *p_data )
     intf_thread_t *p_intf = (intf_thread_t*) p_data;
     intf_sys_t    *p_sys  = (intf_sys_t*) p_intf->p_sys;
 
-    msg_Dbg( p_intf, "Removing dbus watch on fd %d",
-              dbus_watch_get_unix_fd( p_watch ) );
-
     vlc_mutex_lock( &p_sys->lock );
 
     vlc_array_remove( p_sys->p_watches,
@@ -436,18 +477,8 @@ static void watch_toggled( DBusWatch *p_watch, void *p_data )
 {
     intf_thread_t *p_intf = (intf_thread_t*) p_data;
 
-    msg_Dbg( p_intf, "Toggling dbus watch on fd %d",
-             dbus_watch_get_unix_fd( p_watch ) );
-
     if( dbus_watch_get_enabled( p_watch ) )
-    {
-        msg_Dbg( p_intf,
-                  "Watch on fd %d has been enabled, "
-                  "the main loops needs to wake up",
-                  dbus_watch_get_unix_fd( p_watch ) );
-
         wakeup_main_loop( p_intf );
-    }
 }
 
 /**
@@ -493,53 +524,6 @@ static int GetPollFds( intf_thread_t *p_intf, struct pollfd *p_fds )
     return i_fds;
 }
 
-/**
- * UpdateTimeouts() updates the remaining time for each timeout and
- * returns how much time is left until the next timeout.
- *
- * This function must be called with p_sys->lock locked
- *
- * @return int The time remaining until the next timeout, in milliseconds
- * or -1 if there are no timeouts
- *
- * @param intf_thread_t *p_intf This interface thread's state
- * @param mtime_t i_loop_interval The time which has elapsed since the last
- * call to this function
- */
-static int UpdateTimeouts( intf_thread_t *p_intf, mtime_t i_loop_interval )
-{
-    intf_sys_t *p_sys = p_intf->p_sys;
-    mtime_t i_next_timeout = LAST_MDATE;
-    unsigned int i_timeouts = vlc_array_count( p_sys->p_timeouts );
-
-    if( 0 == i_timeouts )
-        return -1;
-
-    for( unsigned int i = 0; i < i_timeouts; i++ )
-    {
-        timeout_info_t *p_info = NULL;
-        DBusTimeout    *p_timeout = NULL;
-        mtime_t         i_interval = 0;
-
-        p_timeout = vlc_array_item_at_index( p_sys->p_timeouts, i );
-        i_interval = dbus_timeout_get_interval( p_timeout ) * 1000; /* µs */
-        p_info = (timeout_info_t*) dbus_timeout_get_data( p_timeout );
-
-        p_info->i_remaining -= __MAX( 0, i_loop_interval ) % i_interval;
-
-        if( !dbus_timeout_get_enabled( p_timeout ) )
-            continue;
-
-        /* The correct poll timeout value is the shortest one
-         * in the dbus timeouts list */
-        i_next_timeout = __MIN( i_next_timeout,
-                                __MAX( 0, p_info->i_remaining ) );
-    }
-
-    /* next timeout in milliseconds */
-    return i_next_timeout / 1000;
-}
-
 /**
  * ProcessEvents() reacts to a list of events originating from other VLC threads
  *
@@ -551,11 +535,12 @@ static int UpdateTimeouts( intf_thread_t *p_intf, mtime_t i_loop_interval )
 static void ProcessEvents( intf_thread_t *p_intf,
                            callback_info_t **p_events, int i_events )
 {
-    playlist_t *p_playlist = p_intf->p_sys->p_playlist;
-    bool        b_can_play = p_intf->p_sys->b_can_play;
+    bool b_can_play = p_intf->p_sys->b_can_play;
 
-    vlc_dictionary_t player_properties;
-    vlc_dictionary_init( &player_properties, 0 );
+    vlc_dictionary_t player_properties, tracklist_properties, root_properties;
+    vlc_dictionary_init( &player_properties,    0 );
+    vlc_dictionary_init( &tracklist_properties, 0 );
+    vlc_dictionary_init( &root_properties,      0 );
 
     for( int i = 0; i < i_events; i++ )
     {
@@ -563,20 +548,32 @@ static void ProcessEvents( intf_thread_t *p_intf,
         {
         case SIGNAL_ITEM_CURRENT:
             TrackChange( p_intf );
+
+            // rate depends on current item
+            if( !vlc_dictionary_has_key( &player_properties, "Rate" ) )
+                vlc_dictionary_insert( &player_properties, "Rate", NULL );
+
             vlc_dictionary_insert( &player_properties, "Metadata", NULL );
             break;
         case SIGNAL_INTF_CHANGE:
         case SIGNAL_PLAYLIST_ITEM_APPEND:
         case SIGNAL_PLAYLIST_ITEM_DELETED:
+        {
+            playlist_t *p_playlist = p_intf->p_sys->p_playlist;
             PL_LOCK;
             b_can_play = playlist_CurrentSize( p_playlist ) > 0;
             PL_UNLOCK;
+
             if( b_can_play != p_intf->p_sys->b_can_play )
             {
                 p_intf->p_sys->b_can_play = b_can_play;
                 vlc_dictionary_insert( &player_properties, "CanPlay", NULL );
             }
+
+            if( !vlc_dictionary_has_key( &tracklist_properties, "Tracks" ) )
+                vlc_dictionary_insert( &tracklist_properties, "Tracks", NULL );
             break;
+        }
         case SIGNAL_VOLUME_MUTED:
         case SIGNAL_VOLUME_CHANGE:
             vlc_dictionary_insert( &player_properties, "Volume", NULL );
@@ -584,6 +581,9 @@ static void ProcessEvents( intf_thread_t *p_intf,
         case SIGNAL_RANDOM:
             vlc_dictionary_insert( &player_properties, "Shuffle", NULL );
             break;
+        case SIGNAL_FULLSCREEN:
+            vlc_dictionary_insert( &root_properties, "Fullscreen", NULL );
+            break;
         case SIGNAL_REPEAT:
         case SIGNAL_LOOP:
             vlc_dictionary_insert( &player_properties, "LoopStatus", NULL );
@@ -596,7 +596,7 @@ static void ProcessEvents( intf_thread_t *p_intf,
             break;
         case SIGNAL_INPUT_METADATA:
         {
-            input_thread_t *p_input = playlist_CurrentInput( p_playlist );
+            input_thread_t *p_input = pl_CurrentInput( p_intf );
             input_item_t   *p_item;
             if( p_input )
             {
@@ -619,7 +619,7 @@ static void ProcessEvents( intf_thread_t *p_intf,
         {
             input_thread_t *p_input;
             input_item_t *p_item;
-            p_input = playlist_CurrentInput( p_intf->p_sys->p_playlist );
+            p_input = pl_CurrentInput( p_intf );
             if( p_input )
             {
                 p_item = input_GetItem( p_input );
@@ -631,7 +631,7 @@ static void ProcessEvents( intf_thread_t *p_intf,
             break;
         }
         default:
-            assert(0);
+            vlc_assert_unreachable();
         }
         free( p_events[i] );
     }
@@ -639,7 +639,15 @@ static void ProcessEvents( intf_thread_t *p_intf,
     if( vlc_dictionary_keys_count( &player_properties ) )
         PlayerPropertiesChangedEmit( p_intf, &player_properties );
 
-    vlc_dictionary_clear( &player_properties, NULL, NULL );
+    if( vlc_dictionary_keys_count( &tracklist_properties ) )
+        TrackListPropertiesChangedEmit( p_intf, &tracklist_properties );
+
+    if( vlc_dictionary_keys_count( &root_properties ) )
+        RootPropertiesChangedEmit( p_intf, &root_properties );
+
+    vlc_dictionary_clear( &player_properties,    NULL, NULL );
+    vlc_dictionary_clear( &tracklist_properties, NULL, NULL );
+    vlc_dictionary_clear( &root_properties,      NULL, NULL );
 }
 
 /**
@@ -657,6 +665,8 @@ static void ProcessWatches( intf_thread_t *p_intf,
                             DBusWatch **p_watches, int i_watches,
                             struct pollfd *p_fds,  int i_fds )
 {
+    VLC_UNUSED(p_intf);
+
     /* Process watches */
     for( int i = 0; i < i_watches; i++ )
     {
@@ -671,74 +681,25 @@ static void ProcessWatches( intf_thread_t *p_intf,
 
             int i_flags   = 0;
             int i_revents = p_fds[j].revents;
-            int i_fd      = p_fds[j].fd;
 
             if( i_revents & POLLIN )
-            {
-                msg_Dbg( p_intf, "fd %d is ready for reading", i_fd );
                 i_flags |= DBUS_WATCH_READABLE;
-            }
 
             if( i_revents & POLLOUT )
-            {
-                msg_Dbg( p_intf, "fd %d is ready for writing", i_fd );
                 i_flags |= DBUS_WATCH_WRITABLE;
-            }
 
             if( i_revents & POLLERR )
-            {
-                msg_Dbg( p_intf, "error when polling fd %d", i_fd );
                 i_flags |= DBUS_WATCH_ERROR;
-            }
 
             if( i_revents & POLLHUP )
-            {
-                msg_Dbg( p_intf, "Hangup signal on fd %d", i_fd );
                 i_flags |= DBUS_WATCH_HANGUP;
-            }
 
             if( i_flags )
-            {
-                msg_Dbg( p_intf, "Handling dbus watch on fd %d", i_fd );
                 dbus_watch_handle( p_watch, i_flags );
-            }
-            else
-                msg_Dbg( p_intf, "Nothing happened on fd %d", i_fd );
         }
     }
 }
 
-/**
- * ProcessTimeouts() handles DBus timeouts
- *
- * This function must be called with p_sys->lock locked
- *
- * @param intf_thread_t *p_intf This interface thread state
- * @param DBusTimeout **p_timeouts List of timeouts to process
- * @param int i_timeouts Size of p_timeouts
- */
-static void ProcessTimeouts( intf_thread_t *p_intf,
-                             DBusTimeout  **p_timeouts, int i_timeouts )
-{
-    VLC_UNUSED( p_intf );
-
-    for( int i = 0; i < i_timeouts; i++ )
-    {
-        timeout_info_t *p_info = NULL;
-
-        p_info = (timeout_info_t*) dbus_timeout_get_data( p_timeouts[i] );
-
-        if( !dbus_timeout_get_enabled( p_info->p_timeout ) )
-            continue;
-
-        if( p_info->i_remaining > 0 )
-            continue;
-
-        dbus_timeout_handle( p_info->p_timeout );
-        p_info->i_remaining = dbus_timeout_get_interval( p_info->p_timeout );
-    }
-}
-
 /**
  * DispatchDBusMessages() dispatches incoming dbus messages
  * (indirectly invoking the callbacks), then it sends outgoing
@@ -757,17 +718,13 @@ static void DispatchDBusMessages( intf_thread_t *p_intf )
     status = dbus_connection_get_dispatch_status( p_sys->p_conn );
     while( status != DBUS_DISPATCH_COMPLETE )
     {
-        msg_Dbg( p_intf, "Dispatching incoming dbus message" );
         dbus_connection_dispatch( p_sys->p_conn );
         status = dbus_connection_get_dispatch_status( p_sys->p_conn );
     }
 
     /* Send outgoing data */
     if( dbus_connection_has_messages_to_send( p_sys->p_conn ) )
-    {
-        msg_Dbg( p_intf, "Sending outgoing data" );
         dbus_connection_flush( p_sys->p_conn );
-    }
 }
 
 /**
@@ -785,7 +742,7 @@ MPRISEntryPoint ( DBusConnection *p_conn, DBusMessage *p_from, void *p_this )
 
     DBusError error;
 
-    if( strcmp( psz_interface, DBUS_INTERFACE_PROPERTIES ) )
+    if( psz_interface && strcmp( psz_interface, DBUS_INTERFACE_PROPERTIES ) )
         psz_target_interface = psz_interface;
 
     else
@@ -805,10 +762,6 @@ MPRISEntryPoint ( DBusConnection *p_conn, DBusMessage *p_from, void *p_this )
         }
     }
 
-    msg_Dbg( (vlc_object_t*) p_this, "Routing %s.%s D-Bus method call to %s",
-                                     psz_interface, psz_method,
-                                     psz_target_interface );
-
     if( !strcmp( psz_target_interface, DBUS_INTERFACE_INTROSPECTABLE ) )
         return handle_introspect( p_conn, p_from, p_this );
 
@@ -818,6 +771,9 @@ MPRISEntryPoint ( DBusConnection *p_conn, DBusMessage *p_from, void *p_this )
     if( !strcmp( psz_target_interface, DBUS_MPRIS_PLAYER_INTERFACE ) )
         return handle_player( p_conn, p_from, p_this );
 
+    if( !strcmp( psz_target_interface, DBUS_MPRIS_TRACKLIST_INTERFACE ) )
+        return handle_tracklist( p_conn, p_from, p_this );
+
     return DBUS_HANDLER_RESULT_NOT_YET_HANDLED;
 }
 
@@ -825,61 +781,42 @@ MPRISEntryPoint ( DBusConnection *p_conn, DBusMessage *p_from, void *p_this )
  * Run: main loop
  *****************************************************************************/
 
-static void Run          ( intf_thread_t *p_intf )
+static void *Run( void *data )
 {
+    intf_thread_t *p_intf = data;
     intf_sys_t    *p_sys = p_intf->p_sys;
-    mtime_t        i_last_run = mdate();
+
+    int canc = vlc_savecancel();
 
     for( ;; )
     {
-        int canc = vlc_savecancel();
         vlc_mutex_lock( &p_sys->lock );
 
         int i_watches = vlc_array_count( p_sys->p_watches );
-        struct pollfd *p_fds = calloc( i_watches, sizeof( struct pollfd ) );
-
-        int i_fds = GetPollFds( p_intf, p_fds );
-
-        mtime_t i_now = mdate(), i_loop_interval = i_now - i_last_run;
-
-        msg_Dbg( p_intf,
-                 "%lld µs elapsed since last wakeup",
-                 (long long) i_loop_interval );
+        struct pollfd fds[i_watches];
+        memset(fds, 0, sizeof fds);
 
-        int i_next_timeout = UpdateTimeouts( p_intf, i_loop_interval );
-        i_last_run = i_now;
+        int i_fds = GetPollFds( p_intf, fds );
+        int timeout = next_timeout(p_intf);
 
         vlc_mutex_unlock( &p_sys->lock );
 
-        if( -1 != i_next_timeout )
-            msg_Dbg( p_intf, "next timeout is in %d ms", i_next_timeout );
-        msg_Dbg( p_intf, "Sleeping until something happens" );
-
         /* thread cancellation is allowed while the main loop sleeps */
         vlc_restorecancel( canc );
 
-        int i_pollres = poll( p_fds, i_fds, i_next_timeout );
-        int i_errsv   = errno;
+        while (poll(fds, i_fds, timeout) == -1)
+        {
+            if (errno != EINTR)
+                goto error;
+        }
 
         canc = vlc_savecancel();
 
-        msg_Dbg( p_intf, "the main loop has been woken up" );
-
-        if( -1 == i_pollres )
-        { /* XXX: What should we do when poll() fails ? */
-            char buf[64];
-            msg_Err( p_intf, "poll() failed: %s", strerror_r( i_errsv, buf, 64 ) );
-            free( p_fds ); p_fds = NULL;
-            vlc_restorecancel( canc );
-            continue;
-        }
-
         /* Was the main loop woken up manually ? */
-        if( 0 < i_pollres && ( p_fds[0].revents & POLLIN ) )
+        if (fds[0].revents & POLLIN)
         {
             char buf;
-            msg_Dbg( p_intf, "Removing a byte from the self-pipe" );
-            (void)read( p_fds[0].fd, &buf, 1 );
+            (void)read( fds[0].fd, &buf, 1 );
         }
 
         /* We need to lock the mutex while building lists of events,
@@ -893,17 +830,11 @@ static void Run          ( intf_thread_t *p_intf )
          */
         vlc_mutex_lock( &p_intf->p_sys->lock );
 
-        /* Get the list of timeouts to process */
-        unsigned int i_timeouts = vlc_array_count( p_sys->p_timeouts );
-        DBusTimeout *p_timeouts[i_timeouts];
-        for( unsigned int i = 0; i < i_timeouts; i++ )
-        {
-            p_timeouts[i] = vlc_array_item_at_index( p_sys->p_timeouts, i );
-        }
+        process_timeouts(p_intf);
 
         /* Get the list of watches to process */
         i_watches = vlc_array_count( p_sys->p_watches );
-        DBusWatch *p_watches[i_watches];
+        DBusWatch *p_watches[i_watches ? i_watches : 1];
         for( int i = 0; i < i_watches; i++ )
         {
             p_watches[i] = vlc_array_item_at_index( p_sys->p_watches, i );
@@ -911,7 +842,7 @@ static void Run          ( intf_thread_t *p_intf )
 
         /* Get the list of events to process */
         int i_events = vlc_array_count( p_intf->p_sys->p_events );
-        callback_info_t* p_info[i_events];
+        callback_info_t* p_info[i_events ? i_events : 1];
         for( int i = i_events - 1; i >= 0; i-- )
         {
             p_info[i] = vlc_array_item_at_index( p_intf->p_sys->p_events, i );
@@ -922,57 +853,47 @@ static void Run          ( intf_thread_t *p_intf )
         vlc_mutex_unlock( &p_intf->p_sys->lock );
 
         ProcessEvents( p_intf, p_info, i_events );
-        ProcessWatches( p_intf, p_watches, i_watches, p_fds, i_fds );
+        ProcessWatches( p_intf, p_watches, i_watches, fds, i_fds );
 
-        free( p_fds ); p_fds = NULL;
-
-        ProcessTimeouts( p_intf, p_timeouts, i_timeouts );
         DispatchDBusMessages( p_intf );
-
-        vlc_restorecancel( canc );
     }
+error:
+    vlc_restorecancel(canc);
+    return NULL;
 }
 
 static void   wakeup_main_loop( void *p_data )
 {
     intf_thread_t *p_intf = (intf_thread_t*) p_data;
 
-    msg_Dbg( p_intf, "Sending wakeup signal to the main loop" );
-
     if( !write( p_intf->p_sys->p_pipe_fds[PIPE_IN], "\0", 1 ) )
-    {
-        msg_Err( p_intf,
-            "Could not wake up the main loop: %s", strerror( errno ) );
-    }
+        msg_Err( p_intf, "Could not wake up the main loop: %s",
+                 vlc_strerror_c(errno) );
 }
 
-/* InputIntfEventCallback() fills a callback_info_t data structure in response
+/* Flls a callback_info_t data structure in response
  * to an "intf-event" input event.
  *
- * Caution: This function executes in the input thread
+ * @warning This function executes in the input thread.
  *
- * This function must be called with p_sys->lock locked
- *
- * @return int VLC_SUCCESS on success, VLC_E* on error
- * @param intf_thread_t *p_intf the interface thread
- * @param input_thread_t *p_input This input thread
- * @param const int i_event input event type
- * @param callback_info_t *p_info Location of the callback info to fill
+ * @return VLC_SUCCESS on success, VLC_E* on error.
  */
-static int InputIntfEventCallback( intf_thread_t   *p_intf,
-                                   input_thread_t  *p_input,
-                                   const int        i_event,
-                                   callback_info_t *p_info )
+static int InputCallback( vlc_object_t *p_this, const char *psz_var,
+                          vlc_value_t oldval, vlc_value_t newval, void *data )
 {
+    input_thread_t *p_input = (input_thread_t *)p_this;
+    intf_thread_t *p_intf = data;
+    intf_sys_t *p_sys = p_intf->p_sys;
+
     dbus_int32_t i_state = PLAYBACK_STATE_INVALID;
-    assert(!p_info->signal);
-    mtime_t i_now = mdate(), i_pos, i_projected_pos, i_interval;
-    float f_current_rate;
 
-    switch( i_event )
+    callback_info_t *p_info = calloc( 1, sizeof( callback_info_t ) );
+    if( unlikely(p_info == NULL) )
+        return VLC_ENOMEM;
+
+    switch( newval.i_int )
     {
         case INPUT_EVENT_DEAD:
-        case INPUT_EVENT_ABORT:
             i_state = PLAYBACK_STATE_STOPPED;
             break;
         case INPUT_EVENT_STATE:
@@ -991,130 +912,136 @@ static int InputIntfEventCallback( intf_thread_t   *p_intf,
             break;
         case INPUT_EVENT_ITEM_META:
             p_info->signal = SIGNAL_INPUT_METADATA;
-            return VLC_SUCCESS;
+            break;
         case INPUT_EVENT_RATE:
             p_info->signal = SIGNAL_RATE;
-            return VLC_SUCCESS;
+            break;
         case INPUT_EVENT_POSITION:
+        {
+            mtime_t i_now = mdate(), i_pos, i_projected_pos, i_interval;
+            float f_current_rate;
+
             /* Detect seeks
              * XXX: This is way more convoluted than it should be... */
+            i_pos = var_GetTime( p_input, "time" );
+
             if( !p_intf->p_sys->i_last_input_pos_event ||
                 !( var_GetInteger( p_input, "state" ) == PLAYING_S ) )
+            {
+                p_intf->p_sys->i_last_input_pos_event = i_now;
+                p_intf->p_sys->i_last_input_pos = i_pos;
                 break;
-            i_pos = var_GetTime( p_input, "time" );
+            }
+
             f_current_rate = var_GetFloat( p_input, "rate" );
             i_interval = ( i_now - p_intf->p_sys->i_last_input_pos_event );
-            i_projected_pos = p_intf->p_sys->i_last_input_pos + ( i_interval * f_current_rate );
+
+            i_projected_pos = p_intf->p_sys->i_last_input_pos +
+                ( i_interval * f_current_rate );
+
             p_intf->p_sys->i_last_input_pos_event = i_now;
             p_intf->p_sys->i_last_input_pos = i_pos;
-            if( ABS( i_pos - i_projected_pos ) < SEEK_THRESHOLD )
+
+            if( llabs( i_pos - i_projected_pos ) < SEEK_THRESHOLD )
                 break;
+
             p_info->signal = SIGNAL_SEEK;
             p_info->i_item = input_GetItem( p_input )->i_id;
             break;
+        }
         default:
-            return VLC_EGENERIC;
+            free( p_info );
+            return VLC_SUCCESS; /* don't care */
     }
 
+    vlc_mutex_lock( &p_sys->lock );
     if( i_state != PLAYBACK_STATE_INVALID &&
-        i_state != p_intf->p_sys->i_playing_state )
+        i_state != p_sys->i_playing_state )
     {
-        p_intf->p_sys->i_playing_state = i_state;
+        p_sys->i_playing_state = i_state;
         p_info->signal = SIGNAL_STATE;
     }
+    if( p_info->signal )
+        vlc_array_append( p_intf->p_sys->p_events, p_info );
+    else
+        free( p_info );
+    vlc_mutex_unlock( &p_intf->p_sys->lock );
 
-    return p_info->signal ? VLC_SUCCESS : VLC_EGENERIC;
+    wakeup_main_loop( p_intf );
+
+    (void)psz_var;
+    (void)oldval;
+    return VLC_SUCCESS;
 }
 
 // Get all the callbacks
 static int AllCallback( vlc_object_t *p_this, const char *psz_var,
                         vlc_value_t oldval, vlc_value_t newval, void *p_data )
 {
-    (void)p_this;
-    (void)oldval;
-
-    intf_thread_t *p_intf = (intf_thread_t*)p_data;
-    callback_info_t *info = calloc( 1, sizeof( callback_info_t ) );
-
-    if( !info )
-        return VLC_ENOMEM;
-
-    vlc_mutex_lock( &p_intf->p_sys->lock );
+    intf_thread_t *p_intf = p_data;
+    callback_info_t info = { .signal = SIGNAL_NONE };
 
     // Wich event is it ?
-    if( !strcmp( "item-current", psz_var ) )
-        info->signal = SIGNAL_ITEM_CURRENT;
-
-    else if( !strcmp( "volume-change", psz_var ) )
-        info->signal = SIGNAL_VOLUME_CHANGE;
-
-    else if( !strcmp( "volume-muted", psz_var ) )
-        info->signal = SIGNAL_VOLUME_MUTED;
-
+    if( !strcmp( "input-current", psz_var ) )
+        info.signal = SIGNAL_ITEM_CURRENT;
+    else if( !strcmp( "volume", psz_var ) )
+    {
+        if( oldval.f_float != newval.f_float )
+            info.signal = SIGNAL_VOLUME_CHANGE;
+    }
+    else if( !strcmp( "mute", psz_var ) )
+    {
+        if( oldval.b_bool != newval.b_bool )
+            info.signal = SIGNAL_VOLUME_MUTED;
+    }
     else if( !strcmp( "intf-change", psz_var ) )
-        info->signal = SIGNAL_INTF_CHANGE;
-
+        info.signal = SIGNAL_INTF_CHANGE;
     else if( !strcmp( "playlist-item-append", psz_var ) )
     {
-        info->signal = SIGNAL_PLAYLIST_ITEM_APPEND;
-        info->i_node = ((playlist_add_t*)newval.p_address)->i_node;
+        info.signal = SIGNAL_PLAYLIST_ITEM_APPEND;
+        info.i_node = ((playlist_add_t*)newval.p_address)->i_node;
     }
-
     else if( !strcmp( "playlist-item-deleted", psz_var ) )
-        info->signal = SIGNAL_PLAYLIST_ITEM_DELETED;
-
+        info.signal = SIGNAL_PLAYLIST_ITEM_DELETED;
     else if( !strcmp( "random", psz_var ) )
-        info->signal = SIGNAL_RANDOM;
-
+        info.signal = SIGNAL_RANDOM;
+    else if( !strcmp( "fullscreen", psz_var ) )
+        info.signal = SIGNAL_FULLSCREEN;
     else if( !strcmp( "repeat", psz_var ) )
-        info->signal = SIGNAL_REPEAT;
-
+        info.signal = SIGNAL_REPEAT;
     else if( !strcmp( "loop", psz_var ) )
-        info->signal = SIGNAL_LOOP;
-
-    else if( !strcmp( "intf-event", psz_var ) )
-    {
-        int i_res = InputIntfEventCallback( p_intf,
-                                            (input_thread_t*) p_this,
-                                            newval.i_int, info );
-        if( VLC_SUCCESS != i_res )
-        {
-            vlc_mutex_unlock( &p_intf->p_sys->lock );
-            free( info );
-
-            return i_res;
-        }
-    }
-
+        info.signal = SIGNAL_LOOP;
     else if( !strcmp( "can-seek", psz_var ) )
-        info->signal = SIGNAL_CAN_SEEK;
-
+        info.signal = SIGNAL_CAN_SEEK;
     else if( !strcmp( "can-pause", psz_var ) )
-        info->signal = SIGNAL_CAN_PAUSE;
-
+        info.signal = SIGNAL_CAN_PAUSE;
     else
-        assert(0);
+        vlc_assert_unreachable();
+
+    if( info.signal == SIGNAL_NONE )
+        return VLC_SUCCESS;
+
+    callback_info_t *p_info = malloc( sizeof( *p_info ) );
+    if( unlikely(p_info == NULL) )
+        return VLC_ENOMEM;
 
     // Append the event
-    vlc_array_append( p_intf->p_sys->p_events, info );
+    *p_info = info;
+    vlc_mutex_lock( &p_intf->p_sys->lock );
+    vlc_array_append( p_intf->p_sys->p_events, p_info );
     vlc_mutex_unlock( &p_intf->p_sys->lock );
 
-    msg_Dbg( p_intf,
-             "Got a VLC event on %s. The main loop needs to wake up "
-             "in order to process it", psz_var );
-
     wakeup_main_loop( p_intf );
-
+    (void) p_this;
     return VLC_SUCCESS;
 }
 
 /*****************************************************************************
- * TrackChange: callback on playlist "item-current"
+ * TrackChange: callback on playlist "input-current"
  *****************************************************************************/
 static int TrackChange( intf_thread_t *p_intf )
 {
     intf_sys_t          *p_sys      = p_intf->p_sys;
-    playlist_t          *p_playlist = p_sys->p_playlist;
     input_thread_t      *p_input    = NULL;
     input_item_t        *p_item     = NULL;
 
@@ -1123,7 +1050,7 @@ static int TrackChange( intf_thread_t *p_intf )
 
     if( p_sys->p_input )
     {
-        var_DelCallback( p_sys->p_input, "intf-event", AllCallback, p_intf );
+        var_DelCallback( p_sys->p_input, "intf-event", InputCallback, p_intf );
         var_DelCallback( p_sys->p_input, "can-pause", AllCallback, p_intf );
         var_DelCallback( p_sys->p_input, "can-seek", AllCallback, p_intf );
         vlc_object_release( p_sys->p_input );
@@ -1132,7 +1059,7 @@ static int TrackChange( intf_thread_t *p_intf )
 
     p_sys->b_meta_read = false;
 
-    p_input = playlist_CurrentInput( p_playlist );
+    p_input = pl_CurrentInput( p_intf );
     if( !p_input )
     {
         return VLC_SUCCESS;
@@ -1149,7 +1076,7 @@ static int TrackChange( intf_thread_t *p_intf )
         p_sys->b_meta_read = true;
 
     p_sys->p_input = p_input;
-    var_AddCallback( p_input, "intf-event", AllCallback, p_intf );
+    var_AddCallback( p_input, "intf-event", InputCallback, p_intf );
     var_AddCallback( p_input, "can-pause", AllCallback, p_intf );
     var_AddCallback( p_input, "can-seek", AllCallback, p_intf );
 
@@ -1211,10 +1138,32 @@ int DemarshalSetPropertyValue( DBusMessage *p_msg, void *p_arg )
         free( psz ); \
     }
 
+#define ADD_META_SINGLETON_STRING_LIST( entry, item ) \
+    { \
+        char * psz = input_item_Get##item( p_input );\
+        if( psz ) { \
+            dbus_message_iter_open_container( &dict, DBUS_TYPE_DICT_ENTRY, \
+                    NULL, &dict_entry ); \
+            dbus_message_iter_append_basic( &dict_entry, DBUS_TYPE_STRING, \
+                    &ppsz_meta_items[entry] ); \
+            dbus_message_iter_open_container( &dict_entry, DBUS_TYPE_VARIANT, \
+                    "as", &variant ); \
+            dbus_message_iter_open_container( &variant, DBUS_TYPE_ARRAY, "s", \
+                                              &list ); \
+            dbus_message_iter_append_basic( &list, \
+                    DBUS_TYPE_STRING, \
+                    &psz ); \
+            dbus_message_iter_close_container( &variant, &list ); \
+            dbus_message_iter_close_container( &dict_entry, &variant ); \
+            dbus_message_iter_close_container( &dict, &dict_entry ); \
+        } \
+        free( psz ); \
+    }
+
 int GetInputMeta( input_item_t* p_input,
                   DBusMessageIter *args )
 {
-    DBusMessageIter dict, dict_entry, variant;
+    DBusMessageIter dict, dict_entry, variant, list;
     /** The duration of the track can be expressed in second, milli-seconds and
         µ-seconds */
     dbus_int64_t i_mtime = input_item_GetDuration( p_input );
@@ -1241,19 +1190,19 @@ int GetInputMeta( input_item_t* p_input,
     ADD_META( 0, DBUS_TYPE_OBJECT_PATH, psz_trackid );
     ADD_VLC_META_STRING( 1,  URI );
     ADD_VLC_META_STRING( 2,  Title );
-    ADD_VLC_META_STRING( 3,  Artist );
+    ADD_META_SINGLETON_STRING_LIST( 3,  Artist );
     ADD_VLC_META_STRING( 4,  Album );
     ADD_VLC_META_STRING( 5,  TrackNum );
     ADD_META( 6, DBUS_TYPE_UINT32, i_time );
     ADD_META( 7, DBUS_TYPE_INT64,  i_mtime );
-    ADD_VLC_META_STRING( 8,  Genre );
-    ADD_VLC_META_STRING( 9,  Rating );
-    ADD_VLC_META_STRING( 10, Date );
+    ADD_META_SINGLETON_STRING_LIST( 8,  Genre );
+    //ADD_META( 9, DBUS_TYPE_DOUBLE, rating );
+    ADD_VLC_META_STRING( 10, Date ); // this is supposed to be in ISO 8601 extended format
     ADD_VLC_META_STRING( 11, ArtURL );
     ADD_VLC_META_STRING( 12, TrackID );
 
     ADD_VLC_META_STRING( 17, Copyright );
-    ADD_VLC_META_STRING( 18, Description );
+    ADD_META_SINGLETON_STRING_LIST( 18, Description );
     ADD_VLC_META_STRING( 19, EncodedBy );
     ADD_VLC_META_STRING( 20, Language );
     ADD_META( 21, DBUS_TYPE_INT64, i_length );
@@ -1262,6 +1211,8 @@ int GetInputMeta( input_item_t* p_input,
     ADD_VLC_META_STRING( 24, Setting );
     ADD_VLC_META_STRING( 25, URL );
 
+    free( psz_trackid );
+
     vlc_mutex_lock( &p_input->lock );
     if( p_input->p_meta )
     {
@@ -1274,6 +1225,41 @@ int GetInputMeta( input_item_t* p_input,
     return VLC_SUCCESS;
 }
 
+int AddProperty( intf_thread_t *p_intf,
+                 DBusMessageIter *p_container,
+                 const char* psz_property_name,
+                 const char* psz_signature,
+                 int (*pf_marshaller) (intf_thread_t*, DBusMessageIter*) )
+{
+    DBusMessageIter entry, v;
+
+    if( !dbus_message_iter_open_container( p_container,
+                                           DBUS_TYPE_DICT_ENTRY, NULL,
+                                           &entry ) )
+        return VLC_ENOMEM;
+
+    if( !dbus_message_iter_append_basic( &entry,
+                                         DBUS_TYPE_STRING,
+                                         &psz_property_name ) )
+        return VLC_ENOMEM;
+
+    if( !dbus_message_iter_open_container( &entry,
+                                           DBUS_TYPE_VARIANT, psz_signature,
+                                           &v ) )
+        return VLC_ENOMEM;
+
+    if( VLC_SUCCESS != pf_marshaller( p_intf, &v ) )
+        return VLC_ENOMEM;
+
+    if( !dbus_message_iter_close_container( &entry, &v) )
+        return VLC_ENOMEM;
+
+    if( !dbus_message_iter_close_container( p_container, &entry ) )
+        return VLC_ENOMEM;
+
+    return VLC_SUCCESS;
+}
+
 #undef ADD_META
 #undef ADD_VLC_META_STRING