1 /* GStreamer
2 * Copyright (C) <1999> Erik Walthinsen <omega@cse.ogi.edu>
3 *
4 * This library is free software; you can redistribute it and/or
5 * modify it under the terms of the GNU Library General Public
6 * License as published by the Free Software Foundation; either
7 * version 2 of the License, or (at your option) any later version.
8 *
9 * This library is distributed in the hope that it will be useful,
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
12 * Library General Public License for more details.
13 *
14 * You should have received a copy of the GNU Library General Public
15 * License along with this library; if not, write to the
16 * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
17 * Boston, MA 02111-1307, USA.
18 */
20 #include <gst/gstfilter.h>
22 GList *
23 gst_filter_run (const GList * list, GstFilterFunc func, gboolean first,
24 gpointer user_data)
25 {
26 const GList *walk = list;
27 GList *result = NULL;
29 while (walk) {
30 gboolean res = TRUE;
31 gpointer data = walk->data;
33 walk = g_list_next (walk);
35 if (func)
36 res = func (data, user_data);
38 if (res) {
39 result = g_list_prepend (result, data);
41 if (first)
42 break;
43 }
44 }
46 return result;
47 }