--- /dev/null
+/*****************************************************************************
+ * hierarchical_node_media_list_view.c: libvlc hierarchical nodes media list
+ * view functs.
+ *****************************************************************************
+ * Copyright (C) 2007 the VideoLAN team
+ * $Id$
+ *
+ * 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"
+
+/* FIXME: This version is probably a bit overheaded, and we may want to store
+ * the items in a vlc_array_t to speed everything up */
+
+//#define DEBUG_HIERARCHICAL_VIEW
+
+#ifdef DEBUG_HIERARCHICAL_VIEW
+# define trace( fmt, ... ) printf( "[HIERARCHICAL_NODE] %s(): " fmt, __FUNCTION__, ##__VA_ARGS__ )
+#else
+# define trace( ... )
+#endif
+
+struct libvlc_media_list_view_private_t
+{
+ vlc_array_t array;
+};
+
+/*
+ * Private functions
+ */
+
+/**************************************************************************
+ * flat_media_list_view_count (private)
+ * (called by media_list_view_count)
+ **************************************************************************/
+static int
+hierarch_node_media_list_view_count( libvlc_media_list_view_t * p_mlv,
+ libvlc_exception_t * p_e )
+{
+ /* FIXME: we may want to cache that */
+ int i, ret, count = libvlc_media_list_count( p_mlv->p_mlist, p_e );
+ libvlc_media_descriptor_t * p_md;
+ libvlc_media_list_t * p_submlist;
+ ret = 0;
+ trace("\n");
+ for( i = 0; i < count; i++ )
+ {
+ p_md = libvlc_media_list_item_at_index( p_mlv->p_mlist, i, p_e );
+ if( !p_md ) continue;
+ p_submlist = libvlc_media_descriptor_subitems( p_md, p_e );
+ if( !p_submlist ) continue;
+ libvlc_media_descriptor_release( p_md );
+ libvlc_media_list_release( p_submlist );
+ ret++;
+ }
+ return ret;
+}
+
+/**************************************************************************
+ * flat_media_list_view_item_at_index (private)
+ * (called by flat_media_list_view_item_at_index)
+ **************************************************************************/
+static libvlc_media_descriptor_t *
+hierarch_node_media_list_view_item_at_index( libvlc_media_list_view_t * p_mlv,
+ int index,
+ libvlc_exception_t * p_e )
+{
+ /* FIXME: we may want to cache that */
+ libvlc_media_descriptor_t * p_md;
+ libvlc_media_list_t * p_submlist;
+ trace("%d\n", index);
+ int i, current_index, count = libvlc_media_list_count( p_mlv->p_mlist, p_e );
+ current_index = -1;
+ for( i = 0; i < count; i++ )
+ {
+ p_md = libvlc_media_list_item_at_index( p_mlv->p_mlist, i, p_e );
+ if( !p_md ) continue;
+ p_submlist = libvlc_media_descriptor_subitems( p_md, p_e );
+ if( !p_submlist ) continue;
+ libvlc_media_list_release( p_submlist );
+ current_index++;
+ if( current_index == index )
+ return p_md;
+ libvlc_media_descriptor_release( p_md );
+ }
+
+ libvlc_exception_raise( p_e, "Index out of bound in Media List View" );
+ return NULL;
+}
+
+/**************************************************************************
+ * flat_media_list_view_item_at_index (private)
+ * (called by flat_media_list_view_item_at_index)
+ **************************************************************************/
+static libvlc_media_list_view_t *
+hierarch_node_media_list_view_children_at_index( libvlc_media_list_view_t * p_mlv,
+ int index,
+ libvlc_exception_t * p_e )
+{
+ libvlc_media_descriptor_t * p_md;
+ libvlc_media_list_t * p_submlist;
+ libvlc_media_list_view_t * p_ret;
+ p_md = hierarch_node_media_list_view_item_at_index( p_mlv, index, p_e );
+ if( !p_md ) return NULL;
+ p_submlist = libvlc_media_descriptor_subitems( p_md, p_e );
+ libvlc_media_descriptor_release( p_md );
+ if( !p_submlist ) return NULL;
+ p_ret = libvlc_media_list_hierarchical_node_view( p_submlist, p_e );
+ libvlc_media_list_release( p_submlist );
+
+ return p_ret;
+}
+
+/* Helper */
+static int
+index_of_item( libvlc_media_list_view_t * p_mlv, libvlc_media_descriptor_t * p_md )
+{
+ libvlc_media_descriptor_t * p_iter_md;
+ libvlc_media_list_t * p_submlist;
+
+ int i, current_index, count = libvlc_media_list_count( p_mlv->p_mlist, NULL );
+ current_index = -1;
+ for( i = 0; i < count; i++ )
+ {
+ p_iter_md = libvlc_media_list_item_at_index( p_mlv->p_mlist, i, NULL );
+ if( !p_iter_md ) continue;
+ p_submlist = libvlc_media_descriptor_subitems( p_iter_md, NULL );
+ if( !p_submlist ) continue;
+ libvlc_media_list_release( p_submlist );
+ libvlc_media_descriptor_release( p_iter_md );
+ current_index++;
+ if( p_md == p_iter_md )
+ return current_index;
+ }
+ return -1;
+}
+
+static vlc_bool_t
+item_is_already_added( libvlc_media_list_view_t * p_mlv, libvlc_media_descriptor_t * p_md )
+{
+ libvlc_media_list_t * p_submlist;
+
+ p_submlist = libvlc_media_descriptor_subitems( p_md, NULL );
+ if( !p_submlist ) return VLC_FALSE;
+ int count = libvlc_media_list_count( p_submlist, NULL );
+ libvlc_media_list_release( p_submlist );
+ return count > 1;
+}
+
+
+/**************************************************************************
+ * media_list_(item|will)_* (private) (Event callback)
+ **************************************************************************/
+static void
+items_subitems_added( const libvlc_event_t * p_event, void * user_data )
+{
+ libvlc_media_descriptor_t * p_md;
+ libvlc_media_list_view_t * p_mlv = user_data;
+ int index;
+ p_md = p_event->p_obj;
+ if( !item_is_already_added( p_mlv, p_md ) )
+ {
+ index = index_of_item( p_mlv, p_md );
+ trace("%d\n", index);
+ if( index >= 0 )
+ {
+ libvlc_media_list_view_will_add_item( p_mlv, p_md, index );
+ libvlc_media_list_view_item_added( p_mlv, p_md, index );
+ }
+ }
+ else
+ trace("item already added\n");
+}
+
+static void
+media_list_item_added( const libvlc_event_t * p_event, void * user_data )
+{
+ libvlc_media_descriptor_t * p_md;
+ libvlc_media_list_view_t * p_mlv = user_data;
+ int index;
+ p_md = p_event->u.media_list_item_added.item;
+ index = index_of_item( p_mlv, p_md );
+ trace("%d\n", index);
+ if( index >= 0)
+ libvlc_media_list_view_item_added( p_mlv, p_md, index );
+ libvlc_event_attach( p_md->p_event_manager, libvlc_MediaDescriptorSubItemAdded,
+ items_subitems_added, p_mlv, NULL );
+
+}
+static void
+media_list_will_add_item( const libvlc_event_t * p_event, void * user_data )
+{
+ libvlc_media_descriptor_t * p_md;
+ libvlc_media_list_view_t * p_mlv = user_data;
+ int index;
+ p_md = p_event->u.media_list_will_add_item.item;
+ index = index_of_item( p_mlv, p_md );
+ trace("%d\n", index);
+ if( index >= 0)
+ libvlc_media_list_view_will_add_item( p_mlv, p_md, index );
+}
+static void
+media_list_item_deleted( const libvlc_event_t * p_event, void * user_data )
+{
+ libvlc_media_descriptor_t * p_md;
+ libvlc_media_list_view_t * p_mlv = user_data;
+ int index;
+ p_md = p_event->u.media_list_item_deleted.item;
+ index = index_of_item( p_mlv, p_md );
+ trace("%d\n", index);
+ if( index >= 0)
+ libvlc_media_list_view_item_deleted( p_mlv, p_md, index );
+ libvlc_event_detach( p_md->p_event_manager, libvlc_MediaDescriptorSubItemAdded,
+ items_subitems_added, p_mlv, NULL );
+}
+static void
+media_list_will_delete_item( const libvlc_event_t * p_event, void * user_data )
+{
+ libvlc_media_descriptor_t * p_md;
+ libvlc_media_list_view_t * p_mlv = user_data;
+ int index;
+ p_md = p_event->u.media_list_will_delete_item.item;
+ index = index_of_item( p_mlv, p_md );
+ trace("%d\n", index);
+ if( index >= 0)
+ libvlc_media_list_view_will_delete_item( p_mlv, p_md, index );
+}
+
+
+/*
+ * Public libvlc functions
+ */
+
+
+/**************************************************************************
+ * flat_media_list_view_release (private)
+ * (called by media_list_view_release)
+ **************************************************************************/
+static void
+hierarch_node_media_list_view_release( libvlc_media_list_view_t * p_mlv )
+{
+ trace("\n");
+ libvlc_event_detach( p_mlv->p_mlist->p_event_manager,
+ libvlc_MediaListItemAdded,
+ media_list_item_added, p_mlv, NULL );
+ libvlc_event_detach( p_mlv->p_mlist->p_event_manager,
+ libvlc_MediaListWillAddItem,
+ media_list_will_add_item, p_mlv, NULL );
+ libvlc_event_detach( p_mlv->p_mlist->p_event_manager,
+ libvlc_MediaListItemDeleted,
+ media_list_item_deleted, p_mlv, NULL );
+ libvlc_event_detach( p_mlv->p_mlist->p_event_manager,
+ libvlc_MediaListWillDeleteItem,
+ media_list_will_delete_item, p_mlv, NULL );
+}
+
+/**************************************************************************
+ * libvlc_media_list_flat_view (Public)
+ **************************************************************************/
+libvlc_media_list_view_t *
+libvlc_media_list_hierarchical_node_view( libvlc_media_list_t * p_mlist,
+ libvlc_exception_t * p_e )
+{
+ trace("\n");
+ libvlc_media_list_view_t * p_mlv;
+ p_mlv = libvlc_media_list_view_new( p_mlist,
+ hierarch_node_media_list_view_count,
+ hierarch_node_media_list_view_item_at_index,
+ hierarch_node_media_list_view_children_at_index,
+ hierarch_node_media_list_view_release,
+ NULL,
+ p_e );
+ libvlc_media_list_lock( p_mlist );
+ libvlc_event_attach( p_mlv->p_mlist->p_event_manager,
+ libvlc_MediaListItemAdded,
+ media_list_item_added, p_mlv, NULL );
+ libvlc_event_attach( p_mlv->p_mlist->p_event_manager,
+ libvlc_MediaListWillAddItem,
+ media_list_will_add_item, p_mlv, NULL );
+ libvlc_event_attach( p_mlv->p_mlist->p_event_manager,
+ libvlc_MediaListItemDeleted,
+ media_list_item_deleted, p_mlv, NULL );
+ libvlc_event_attach( p_mlv->p_mlist->p_event_manager,
+ libvlc_MediaListWillDeleteItem,
+ media_list_will_delete_item, p_mlv, NULL );
+ libvlc_media_list_unlock( p_mlist );
+ return p_mlv;
+}
projects / vlc / commitdiff