control/flat_media_list.c: New flat media list view.

include/vlc/libvlc.h

@@ -535,6 +535,10 @@ VLC_PUBLIC_API void
 VLC_PUBLIC_API void
     libvlc_media_list_unlock( libvlc_media_list_t * );
 
+VLC_PUBLIC_API libvlc_media_list_t *
+    libvlc_media_list_flat_media_list( libvlc_media_list_t *,
+                                       libvlc_exception_t * );
+
 VLC_PUBLIC_API libvlc_event_manager_t *
     libvlc_media_list_event_manager( libvlc_media_list_t *,
                                     libvlc_exception_t * );

src/control/flat_media_list.c

+/*****************************************************************************
+ * flat_media_list.c: libvlc flat media list functions. (extension to
+ * media_list.c).
+ *****************************************************************************
+ * Copyright (C) 2007 the VideoLAN team
+ * $Id: flat_media_list.c 21287 2007-08-20 01:28:12Z pdherbemont $
+ *
+ * Authors: Pierre d'Herbemont <pdherbemont # videolan.org>
+ *
+ * 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
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301, USA.
+ *****************************************************************************/
+
+#include "libvlc_internal.h"
+#include <vlc/libvlc.h>
+#include <assert.h>
+#include "vlc_arrays.h"
+
+/*
+ * Private functions
+ */
+static void add_item( libvlc_media_list_t * p_mlist, libvlc_media_descriptor_t * p_md );
+static void remove_item( libvlc_media_list_t * p_mlist, libvlc_media_descriptor_t * p_md );
+static void subitems_created( const libvlc_event_t * p_event , void * p_user_data);
+static void sublist_item_added( const libvlc_event_t * p_event, void * p_user_data );
+static void sublist_item_removed( const libvlc_event_t * p_event, void * p_user_data );
+static void add_media_list( libvlc_media_list_t * p_mlist, libvlc_media_list_t * p_submlist );
+static void remove_media_list( libvlc_media_list_t * p_fmlist, libvlc_media_list_t * p_mlist );
+
+/**************************************************************************
+ *       add_item (private) 
+ **************************************************************************/
+static void
+add_item( libvlc_media_list_t * p_mlist, libvlc_media_descriptor_t * p_md )
+{
+    /* Only add the media descriptor once to our flat list */
+    if( libvlc_media_list_index_of_item( p_mlist->p_flat_mlist, p_md, NULL ) < 0 )
+    {
+        if( p_md->p_subitems )
+        {
+            add_media_list( p_mlist->p_flat_mlist, p_md->p_subitems );
+        }
+        else
+        {
+            libvlc_event_attach( p_md->p_event_manager,
+                                 libvlc_MediaDescriptorSubItemAdded,
+                                 subitems_created, p_mlist, NULL );
+            libvlc_media_list_add_media_descriptor( p_mlist->p_flat_mlist,
+                                                    p_md, NULL );
+        }
+    }
+}
+
+/**************************************************************************
+ *       remove_item (private) 
+ **************************************************************************/
+static void
+remove_item( libvlc_media_list_t * p_mlist, libvlc_media_descriptor_t * p_md )
+{
+    if( p_md->p_subitems ) /* XXX: Don't access that directly */
+        remove_media_list( p_mlist, p_md->p_subitems );
+    libvlc_event_detach( p_md->p_event_manager,
+                         libvlc_MediaDescriptorSubItemAdded,
+                         subitems_created, p_mlist, NULL );
+    int i = libvlc_media_list_index_of_item( p_mlist->p_flat_mlist, p_md, NULL );
+    libvlc_media_list_remove_index( p_mlist->p_flat_mlist, i, NULL );
+}
+
+/**************************************************************************
+ *       subitems_created (private) (Event Callback)
+ **************************************************************************/
+static void
+subitems_created( const libvlc_event_t * p_event , void * p_user_data)
+{
+    libvlc_media_list_t * p_mlist = p_user_data;
+    libvlc_media_descriptor_t * p_md = p_event->u.media_list_item_deleted.item;
+
+    /* Remove the item and add the playlist */
+    remove_item( p_mlist->p_flat_mlist, p_md );
+
+    add_media_list( p_mlist->p_flat_mlist, p_md->p_subitems );
+}
+
+/**************************************************************************
+ *       sublist_item_added (private) (Event Callback)
+ *
+ * This is called if the dynamic sublist's data provider adds a new item.
+ **************************************************************************/
+static void
+sublist_item_added( const libvlc_event_t * p_event, void * p_user_data )
+{
+    libvlc_media_list_t * p_mlist = p_user_data;
+    libvlc_media_descriptor_t * p_md = p_event->u.media_list_item_added.item;
+    add_item( p_mlist, p_md );
+}
+
+/**************************************************************************
+ *       sublist_remove_item (private) (Event Callback)
+ **************************************************************************/
+static void
+sublist_item_removed( const libvlc_event_t * p_event, void * p_user_data )
+{
+    libvlc_media_list_t * p_mlist = p_user_data;
+    libvlc_media_descriptor_t * p_md = p_event->u.media_list_item_deleted.item;
+    remove_item( p_mlist, p_md );
+}
+
+/**************************************************************************
+ *       add_media_list (Private)
+ **************************************************************************/
+void
+add_media_list( libvlc_media_list_t * p_mlist,
+                libvlc_media_list_t * p_submlist )
+{
+    int count = libvlc_media_list_count( p_submlist, NULL );
+    int i;
+
+    libvlc_event_attach( p_submlist->p_event_manager,
+                         libvlc_MediaListItemAdded,
+                         sublist_item_added, p_mlist, NULL );
+    libvlc_event_attach( p_submlist->p_event_manager,
+                         libvlc_MediaListItemDeleted,
+                         sublist_item_removed, p_mlist, NULL );
+    for( i = 0; i < count; i++ )
+    {
+        libvlc_media_descriptor_t * p_md;
+        p_md = libvlc_media_list_item_at_index( p_submlist, i, NULL );
+        add_item( p_mlist->p_flat_mlist, p_md );    
+    }
+}
+
+/**************************************************************************
+ *       remove_media_list (Private)
+ **************************************************************************/
+void
+remove_media_list( libvlc_media_list_t * p_mlist,
+                   libvlc_media_list_t * p_submlist )
+{
+    int count = libvlc_media_list_count( p_submlist, NULL );    
+    int i;
+    for( i = 0; i < count; i++ )
+    {
+        libvlc_media_descriptor_t * p_md;
+        p_md = libvlc_media_list_item_at_index( p_submlist, i, NULL );
+        remove_item( p_mlist, p_md );
+    }
+    
+    libvlc_event_detach( p_mlist->p_event_manager,
+                         libvlc_MediaListItemAdded,
+                         sublist_item_added, p_mlist, NULL );
+    libvlc_event_detach( p_mlist->p_event_manager,
+                         libvlc_MediaListItemDeleted,
+                         sublist_item_removed, p_mlist, NULL );
+}
+
+
+/*
+ * Public libvlc functions
+ */
+
+/**************************************************************************
+ *       media_list (Public)
+ **************************************************************************/
+libvlc_media_list_t *
+libvlc_media_list_flat_media_list( libvlc_media_list_t * p_mlist,
+                                   libvlc_exception_t * p_e )
+{
+    if( !p_mlist->p_flat_mlist )
+    {
+        p_mlist->p_flat_mlist = libvlc_media_list_new(
+                                            p_mlist->p_libvlc_instance,
+                                            p_e );
+        add_media_list( p_mlist->p_flat_mlist, p_mlist );
+    }
+    libvlc_media_list_retain( p_mlist->p_flat_mlist );
+    return p_mlist->p_flat_mlist;
+}

src/control/libvlc_internal.h

@@ -106,7 +106,11 @@ struct libvlc_media_list_t
     int                      i_refcount;
     vlc_mutex_t              object_lock;
     char *                   psz_name; /* Usually NULL */
-    DECL_ARRAY(void *) items;
+    DECL_ARRAY(void *)       items;
+    
+    /* Other way to see that media list */
+    /* Used in flat_media_list.c */
+    libvlc_media_list_t *    p_flat_mlist;
 };
 
 struct libvlc_dynamic_media_list_t