playlist: don't play directories that can loop into themselves

include/vlc_input_item.h

@@ -122,6 +122,7 @@ struct input_item_node_t
     input_item_node_t      **pp_children;
     input_item_node_t      *p_parent;
     input_item_compar_cb   compar_cb;
+    bool                   b_can_loop;
 };
 
 VLC_API void input_item_CopyOptions( input_item_t *p_parent, input_item_t *p_child );

modules/demux/playlist/directory.c

@@ -36,6 +36,7 @@
 struct demux_sys_t
 {
     bool b_dir_sorted;
+    bool b_dir_can_loop;
 };
 
 /*****************************************************************************
@@ -50,14 +51,16 @@ int Import_Dir ( vlc_object_t *p_this)
 
     bool b_is_dir = false;
     bool b_dir_sorted = false;
+    bool b_dir_can_loop = false;
     int i_err = stream_Control( p_demux->s, STREAM_IS_DIRECTORY, &b_is_dir,
-                                &b_dir_sorted, NULL );
+                                &b_dir_sorted, &b_dir_can_loop );
 
     if ( !( i_err == VLC_SUCCESS && b_is_dir ) )
         return VLC_EGENERIC;
 
     STANDARD_DEMUX_INIT_MSG( "reading directory content" );
     p_demux->p_sys->b_dir_sorted = b_dir_sorted;
+    p_demux->p_sys->b_dir_can_loop = b_dir_can_loop;
 
     return VLC_SUCCESS;
 }
@@ -153,6 +156,7 @@ static int Demux( demux_t *p_demux )
 
     p_input = GetCurrentItem( p_demux );
     p_node = input_item_node_Create( p_input );
+    p_node->b_can_loop = p_demux->p_sys->b_dir_can_loop;
     input_item_Release(p_input);
 
     b_show_hiddenfiles = var_InheritBool( p_demux, "show-hiddenfiles" );

src/input/item.c

@@ -1102,6 +1102,7 @@ input_item_node_t *input_item_node_Create( input_item_t *p_input )
     p_node->p_parent = NULL;
     p_node->i_children = 0;
     p_node->pp_children = NULL;
+    p_node->b_can_loop = false;
 
     return p_node;
 }

src/playlist/item.c

@@ -150,6 +150,22 @@ static void input_item_add_subitem_tree ( const vlc_event_t * p_event,
             }
             else
             {
+                /* Don't Play a directory if it can loop into a parent */
+                if( p_new_root->b_can_loop )
+                {
+                    /* Play the first regular file */
+                    for( ; pos < last_pos; pos++ )
+                    {
+                        if( p_item->pp_children[pos]->p_input->i_type != ITEM_TYPE_DIRECTORY )
+                            break;
+                    }
+                    if( last_pos == pos )
+                    {
+                        PL_UNLOCK;
+                        playlist_Stop( p_playlist );
+                        return;
+                    }
+                }
                 p_play_item = p_item->pp_children[pos];
                 /* NOTE: this is a work around the general bug:
                 if node-to-be-played contains sub-nodes, then second instead