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+/* Copyright (C) 2002-2003 RealVNC Ltd. All Rights Reserved.
+ *
+ * This 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 software 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 software; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307,
+ * USA.
+ */
+
+#ifndef __RDR_RANDOMSTREAM_H__
+#define __RDR_RANDOMSTREAM_H__
+
+#include <stdio.h>
+#include <rdr/InStream.h>
+
+#ifdef WIN32
+#ifndef _WIN32_WINNT
+#define _WIN32_WINNT 0x0400
+#endif
+#define WIN32_LEAN_AND_MEAN
+#include <windows.h>
+#include <wincrypt.h>
+#endif
+
+namespace rdr {
+
+ class RandomStream : public InStream {
+
+ public:
+
+ RandomStream();
+ virtual ~RandomStream();
+
+ int pos();
+
+ protected:
+ int overrun(int itemSize, int nItems, bool wait);
+
+ private:
+ U8* start;
+ int offset;
+
+ static unsigned int seed;
+#ifdef WIN32
+ HCRYPTPROV provider;
+#else
+ FILE* fp;
+#endif
+
+ };
+
+} // end of namespace rdr
+
+#endif