gstreamer/gst/gstfilter.c

/* GStreamer
 * Copyright (C) <1999> Erik Walthinsen <omega@cse.ogi.edu>
 *
 * This library is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Library General Public
 * License as published by the Free Software Foundation; either
 * version 2 of the License, or (at your option) any later version.
 *
 * This library 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
 * Library General Public License for more details.
 *
 * You should have received a copy of the GNU Library General Public
 * License along with this library; if not, write to the
 * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
 * Boston, MA 02111-1307, USA.
 */

#include <gst/gstfilter.h>

GList *
gst_filter_run (const GList * list, GstFilterFunc func, gboolean first,
    gpointer user_data)
{
  const GList *walk = list;
  GList *result = NULL;

  while (walk) {
    gboolean res = TRUE;
    gpointer data = walk->data;

    walk = g_list_next (walk);

    if (func)
      res = func (data, user_data);

    if (res) {
      result = g_list_prepend (result, data);

      if (first)
        break;
    }
  }

  return result;
}