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#pragma once
#ifndef VPVL2_EXTENSIONS_FPSCOUNTER_H_
#define VPVL2_EXTENSIONS_FPSCOUNTER_H_

#include <vpvl2/Common.h>

namespace vpvl2
{
namespace extensions
{

class FPSCounter {
public:
    FPSCounter()
        : m_value(0),
          m_accumulated(0),
          m_updated(0)
    {
    }
    ~FPSCounter() {
        reset();
    }

    void update(int64_t elapsed) {
        if (abs(m_updated - elapsed) > 1000) {
            m_value = m_accumulated;
            m_accumulated = 0;
            m_updated = elapsed;
        }
        m_accumulated++;
    }
    void reset() {
        m_value = 0;
        m_accumulated = 0;
        m_updated = 0;
    }
    int value() const {
        return m_value;
    }

private:
    int m_value;
    int m_accumulated;
    int64_t m_updated;
};

} /* namespace extensions */
} /* namespace vpvl2 */

#endif
