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diff --git a/src/utilities/cameragui/mtqueue.h b/src/utilities/cameragui/mtqueue.h
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+++ b/src/utilities/cameragui/mtqueue.h
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+/* ============================================================
+ *
+ * This file is a part of digiKam project
+ * http://www.digikam.org
+ *
+ * Date        : 2004-09-30
+ * Description : camera download multi-threading handler.
+ * 
+ * Copyright (C) 2004 by Renchi Raju <renchi@pooh.tam.uiuc.edu>
+
+ * 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, 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.
+ * 
+ * ============================================================ */
+
+#ifndef COMMAND_QUEUE_H
+#define COMMAND_QUEUE_H
+
+// TQt includes.
+
+#include <tqptrqueue.h>
+#include <tqmutex.h>
+
+namespace Digikam
+{
+
+template<class Type> class MTQueue
+{
+
+public:
+
+    MTQueue()
+    {
+        queue_.setAutoDelete(true);
+    }
+    
+    ~MTQueue()
+    {
+        flush();
+    }
+    
+    bool isEmpty()
+    {
+        mutex_.lock();
+        bool empty = queue_.isEmpty();
+        mutex_.unlock();
+        return empty;
+    }
+    
+    void flush()
+    {
+        mutex_.lock();
+        queue_.clear();
+        mutex_.unlock();
+    }
+    
+    void enqueue(Type * t)
+    {
+        mutex_.lock();
+        queue_.enqueue(t);
+        mutex_.unlock();
+    }
+    
+    Type * dequeue()
+    {
+        mutex_.lock();
+        Type * i = queue_.dequeue();
+        mutex_.unlock();
+        return i;
+    }
+    
+    Type * head(bool lock=true)
+    {
+        if (lock)
+        mutex_.lock();
+        Type * i = queue_.head();
+        if (lock)
+            mutex_.unlock();
+        return i;
+    }
+    
+    int count()
+    {
+        mutex_.lock();
+        int c = queue_.count();
+        mutex_.unlock();
+        return c;
+    }
+    
+    void lock()
+    {
+        mutex_.lock();
+    }
+    
+    void unlock()
+    {
+        mutex_.unlock();
+    }
+    
+private:
+
+    TQPtrQueue<Type> queue_;
+    TQMutex mutex_;
+};
+
+}  // namespace Digikam
+
+#endif  // COMMAND_QUEUE_H