syntheticclock.h

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#pragma once
 
 
#include <promeki/config.h>
#if PROMEKI_ENABLE_CORE
#include <promeki/atomic.h>
#include <promeki/namespace.h>
#include <promeki/clock.h>
#include <promeki/framenumber.h>
#include <promeki/framerate.h>
 
PROMEKI_NAMESPACE_BEGIN
 
class SyntheticClock : public Clock {
        public:
                explicit SyntheticClock(const ClockDomain &domain = ClockDomain(ClockDomain::Synthetic));
 
                explicit SyntheticClock(const FrameRate   &frameRate,
                                        const ClockDomain &domain = ClockDomain(ClockDomain::Synthetic));
 
                void setFrameRate(const FrameRate &frameRate);
 
                const FrameRate &frameRate() const { return _frameRate; }
 
                void setCurrentFrame(const FrameNumber &frame);
 
                FrameNumber currentFrame() const { return FrameNumber(_currentFrame.value()); }
 
                void advance(int64_t frames = 1);
 
                void reset(const FrameNumber &frame = FrameNumber(0));
 
                int64_t     resolutionNs() const override;
                ClockJitter jitter() const override;
 
        protected:
                Result<int64_t> raw() const override;
                Error           sleepUntilNs(int64_t targetNs) const override;
 
        private:
                void recomputePeriod();
 
                FrameRate            _frameRate;
                Atomic<int64_t> _framePeriodNs{0};
                Atomic<int64_t> _currentFrame{0};
};
 
PROMEKI_NAMESPACE_END
 
#endif // PROMEKI_ENABLE_CORE