1 files changed, 136 insertions, 0 deletions
diff --git a/libs/surfaces/mackie/timer.h b/libs/surfaces/mackie/timer.h
new file mode 100644
index 0000000000..736e81baef
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+++ b/libs/surfaces/mackie/timer.h
@@ -0,0 +1,136 @@
+/*
+Copyright (C) 1998, 1999, 2000, 2007 John Anderson
+
+This program 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 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.
+
+You should have received a copy of the GNU Library General Public License
+along with this program; if not, write to the Free Software
+Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
+*/
+
+#ifndef timer_h
+#define timer_h
+
+#ifdef _WIN32
+#include "windows.h"
+#else
+#include <sys/time.h>
+#endif
+
+namespace Mackie
+{
+
+/**
+	millisecond timer class.
+*/
+class Timer
+{
+public:
+	
+	/**
+		start the timer running if true, or just create the
+		object if false.
+	*/
+	Timer( bool shouldStart = true )
+	{
+		if ( shouldStart )
+			start();
+	}
+
+	/**
+		Start the timer running. Return the current timestamp, in milliseconds
+	*/
+	unsigned long start()
+	{
+#ifdef _WIN32
+		_start = (unsigned long)::GetTickCount();
+#else
+		gettimeofday ( &_start, 0 );
+#endif
+		running = true;
+#ifdef _WIN32
+		return _start;
+#else
+		return ( _start.tv_sec * 1000000 + _start.tv_usec ) / 1000;
+#endif
+	}
+
+	/**
+		returns the number of milliseconds since start
+		also stops the timer running
+	*/
+	unsigned long stop()
+	{
+#ifdef _WIN32
+		_stop = (unsigned long)::GetTickCount();
+#else
+		gettimeofday ( &_stop, 0 );
+#endif
+		running = false;
+		return elapsed();
+	}
+
+	/**
+		returns the number of milliseconds since start
+	*/
+	unsigned long elapsed() const
+	{
+		if ( running )
+		{
+#ifdef _WIN32
+			DWORD current = ::GetTickCount();
+			return current - _start;
+#else
+			struct timeval current;
+			gettimeofday ( &current, 0 );
+			return (
+				( current.tv_sec * 1000000 + current.tv_usec ) - ( _start.tv_sec * 1000000 + _start.tv_usec )
+			) / 1000
+			;
+#endif
+		}
+		else
+		{
+#ifdef _WIN32
+			return _stop - _start;
+#else
+			return (
+				( _stop.tv_sec * 1000000 + _stop.tv_usec ) - ( _start.tv_sec * 1000000 + _start.tv_usec )
+			) / 1000
+			;
+#endif
+		}
+	}
+	
+	/**
+		Call stop and then start. Return the value from stop.
+	*/
+	unsigned long restart()
+	{
+		unsigned long retval = stop();
+		start();
+		return retval;
+	}
+
+private:
+#ifdef _WIN32
+	unsigned long _start;
+	unsigned long _stop;
+#else
+	struct timeval _start;
+	struct timeval _stop;
+#endif
+	bool running;
+};
+
+}
+
+#endif