MidiTimer.h

/*
    This is part of CFugue, a C++ Runtime for MIDI Score Programming
    Copyright (C) 2009 Gopalakrishna Palem

    For links to further information, or to contact the author,
    see <http://cfugue.sourceforge.net/>.

    $LastChangedDate: 2014-05-10 10:56:34 +0530 (Sat, 10 May 2014) $
    $Rev: 203 $
    $LastChangedBy: krishnapg $
*/

#ifndef _MIDI_TIMER_H__D2A4A592_DAE0_46DC_ADA6_6191407F567E__
#define _MIDI_TIMER_H__D2A4A592_DAE0_46DC_ADA6_6191407F567E__

#include <chrono>
#include <thread>
namespace CFugue
{
    ///<Summary>Plays the role of a pseudo MIDI Timer for MIDI Sequencer</Summary>
    class MidiTimer
    {
    public:
        typedef std::chrono::steady_clock::time_point TimePoint;
        typedef std::chrono::milliseconds Duration;

        ///<Summary>
        /// Returns current time point for MIDI Sequencing.
        /// It is usually measure as the time elapsed since epoch.
        /// Taking the difference of two consequent calls of this gives the elapsed time for MIDI.
        /// @return psuedo time tick offset that is suitable for MIDI sequencer
        ///</Summary>
        static TimePoint Now()
        {
            return std::chrono::steady_clock::now();
        }

        ///<Summary>
        /// Causes the calling thread to sleep
        /// @param ms sleep duration (in milli-seconds)
        ///</Summary>
        static void Sleep(unsigned long ms)
        {
            std::this_thread::sleep_for(Duration(ms));
        }
    };

} // namespace CFugue

#endif // _MIDI_TIMER_H__D2A4A592_DAE0_46DC_ADA6_6191407F567E__