dbus: Return an int64 in the Position property getter

According to the MPRIS specification, the Position property of the
Player object must be an int64.

dbus microsecond position overflows the unsigned 32-bit integer at
about 35:48 into a track's playback.  A 64-bit integer still means
an overflow, but after more than 292000 years into a track's playback.
Signed-off-by: Mirsal Ennaime <mirsal@videolan.org>
(cherry picked from commit 7531cecfd40941a7d21b4566cc3b0ee964290090)
Signed-off-by: Jean-Baptiste Kempf <jb@videolan.org>

modules/control/dbus/dbus_player.c

@@ -45,9 +45,9 @@ DBUS_METHOD( Position )
     REPLY_INIT;
     OUT_ARGUMENTS;
     DBusMessageIter v;
-    dbus_int32_t i_pos;
+    dbus_int64_t i_pos;
 
-    if( !dbus_message_iter_open_container( &args, DBUS_TYPE_VARIANT, "i", &v ) )
+    if( !dbus_message_iter_open_container( &args, DBUS_TYPE_VARIANT, "x", &v ) )
         return DBUS_HANDLER_RESULT_NEED_MEMORY;
 
     input_thread_t *p_input = playlist_CurrentInput( PL );
@@ -61,7 +61,7 @@ DBUS_METHOD( Position )
         vlc_object_release( p_input );
     }
 
-    if( !dbus_message_iter_append_basic( &v, DBUS_TYPE_INT32, &i_pos ) )
+    if( !dbus_message_iter_append_basic( &v, DBUS_TYPE_INT64, &i_pos ) )
         return DBUS_HANDLER_RESULT_NEED_MEMORY;
 
     if( !dbus_message_iter_close_container( &args, &v ) )
@@ -74,7 +74,7 @@ DBUS_METHOD( SetPosition )
 { /* set position in microseconds */
 
     REPLY_INIT;
-    dbus_int32_t i_pos;
+    dbus_int64_t i_pos;
     vlc_value_t position;
     char *psz_trackid, *psz_dbus_trackid;
     input_item_t *p_item;