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diff --git a/lib/threadsafe_queue_priority.h b/lib/threadsafe_queue_priority.h
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+++ b/lib/threadsafe_queue_priority.h
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+/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/***************************************************************************
+ *            threadsafe_queue_priority.h
+ *
+ *  Tue Sep 27 14:01:24 CEST 2005
+ *  Copyright  2005 Bent Bisballe Nyeng
+ *  deva@aasimon.org
+ ****************************************************************************/
+
+/*
+ *  This file is part of MIaV.
+ *
+ *  MIaV 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.
+ *
+ *  MIaV 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 MIaV; if not, write to the Free Software
+ *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA.
+ */
+#include "config.h"
+#ifndef __MIAV_THREADSAFE_QUEUE_PRIORITY_H__
+#define __MIAV_THREADSAFE_QUEUE_PRIORITY_H__
+
+#include "threadsafe_queue.h"
+
+#include "frame.h"
+
+#include <queue>
+#include <functional>
+
+#include "info.h"
+
+// Method for use, when comparing Frames in priority queue.
+template <typename T>
+struct priority : std::binary_function<T, T, bool> {
+  bool operator() (const T& a, const T& b) const {
+    return ((Frame*)a)->number > ((Frame*)b)->number;
+  }
+};
+
+class ThreadSafeQueuePriority: public ThreadSafeQueue< Frame* > {
+public:
+  ThreadSafeQueuePriority(Info *info, unsigned int framenumber = 0);
+  ~ThreadSafeQueuePriority();
+
+  void push(Frame *frame);
+  Frame *pop();
+  int size();
+
+private:
+  Info* info;
+
+  unsigned int framenumber;
+  std::priority_queue< Frame*, std::vector<Frame*>, priority<Frame*> > queue;
+};
+
+#endif/*__MIAV_THREADSAFE_QUEUE_PRIORITY_H__*/