// Copyright 2017 Google LLC. All Rights Reserved. This file and proprietary
// source code may only be used and distributed under the Widevine License
// Agreement.
#include "timer_metric.h"

namespace wvcdm {
namespace metrics {
using ClockType = std::chrono::steady_clock;
using TimePoint = std::chrono::time_point<ClockType>;

void Timer::Start() {
  start_ = ClockType::now();
  is_started_ = true;
}

void Timer::Clear() { is_started_ = false; }

double Timer::AsMs() const {
  if (!is_started_) return 0.0;
  const TimePoint end = ClockType::now();
  return (end - start_) / std::chrono::milliseconds(1);
}

double Timer::AsUs() const {
  if (!is_started_) return 0.0;
  const TimePoint end = ClockType::now();
  return (end - start_) / std::chrono::microseconds(1);
}
}  // namespace metrics
}  // namespace wvcdm