diff --git a/common/jpeg/rrtimer.h b/common/jpeg/rrtimer.h
new file mode 100644
index 0000000..4db5e37
--- /dev/null
+++ b/common/jpeg/rrtimer.h
@@ -0,0 +1,114 @@
+/* Copyright (C)2004 Landmark Graphics Corporation
+ * Copyright (C)2005 Sun Microsystems, Inc.
+ *
+ * This library is free software and may be redistributed and/or modified under
+ * the terms of the wxWindows Library License, Version 3.1 or (at your option)
+ * any later version.  The full license is in the LICENSE.txt file included
+ * with this distribution.
+ *
+ * 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
+ * wxWindows Library License for more details.
+ */
+
+#ifndef __RRTIMER_H__
+#define __RRTIMER_H__
+
+#ifdef __cplusplus
+
+#ifdef _WIN32
+#include <windows.h>
+#else
+#include <sys/time.h>
+#endif
+
+class rrtimer
+{
+	public:
+
+		rrtimer(void) : t1(0.0)
+		{
+			#ifdef _WIN32
+			highres=false;  tick=0.001;
+			LARGE_INTEGER Frequency;
+			if(QueryPerformanceFrequency(&Frequency)!=0)
+			{
+				tick=(double)1.0/(double)(Frequency.QuadPart);
+				highres=true;
+			}
+			#endif
+		}
+
+		void start(void)
+		{
+			t1=time();
+		}
+
+		double time(void)
+		{
+			#ifdef _WIN32
+			if(highres)
+			{
+				LARGE_INTEGER Time;
+				QueryPerformanceCounter(&Time);
+				return((double)(Time.QuadPart)*tick);
+			}
+			else
+				return((double)GetTickCount()*tick);
+			#else
+			struct timeval __tv;
+			gettimeofday(&__tv, (struct timezone *)NULL);
+			return((double)(__tv.tv_sec)+(double)(__tv.tv_usec)*0.000001);
+			#endif
+		}
+
+		double elapsed(void)
+		{
+			return time()-t1;
+		}
+
+	private:
+
+		#ifdef _WIN32
+		bool highres;  double tick;
+		#endif
+		double t1;
+};
+
+#endif  // __cplusplus
+
+#ifdef _WIN32
+
+#include <windows.h>
+
+__inline double rrtime(void)
+{
+	LARGE_INTEGER Frequency, Time;
+	if(QueryPerformanceFrequency(&Frequency)!=0)
+	{
+		QueryPerformanceCounter(&Time);
+		return (double)Time.QuadPart/(double)Frequency.QuadPart;
+	}
+	else return (double)GetTickCount()*0.001;
+}
+
+#else
+
+#include <sys/time.h>
+
+#ifdef sun
+#define __inline inline
+#endif
+
+static __inline double rrtime(void)
+{
+	struct timeval __tv;
+	gettimeofday(&__tv, (struct timezone *)NULL);
+	return((double)__tv.tv_sec+(double)__tv.tv_usec*0.000001);
+}
+
+#endif
+
+#endif
+