dom/media/TimeUnits.h
author Matt Woodrow <mwoodrow@mozilla.com>
Tue, 03 Mar 2015 17:38:45 +1300
changeset 231526 d08d7a1a55bae44082e7e7218338099abff07549
child 242246 6f56bbf8cb5c66418a362c1961ed0948c507db4b
permissions -rw-r--r--
Bug 1138260 - Add typed Microseconds class and use it for the range removal algorithm. r=jya,kinetik

/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* vim: set ts=8 sts=2 et sw=2 tw=80: */
/* This Source Code Form is subject to the terms of the Mozilla Public
 * License, v. 2.0. If a copy of the MPL was not distributed with this
 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */

#ifndef TIME_UNITS_H
#define TIME_UNITS_H

#include "VideoUtils.h"
#include "mozilla/FloatingPoint.h"

namespace mozilla {
namespace media {

struct Microseconds {
  Microseconds()
    : mValue(0)
  {}

  explicit Microseconds(int64_t aValue)
    : mValue(aValue)
  {}

  double ToSeconds() {
    return double(mValue) / USECS_PER_S;
  }

  static Microseconds FromSeconds(double aValue) {
    MOZ_ASSERT(!IsNaN(aValue));

    double val = aValue * USECS_PER_S;
    if (val >= double(INT64_MAX)) {
      return Microseconds(INT64_MAX);
    } else if (val <= double(INT64_MIN)) {
      return Microseconds(INT64_MIN);
    } else {
      return Microseconds(int64_t(val));
    }
  }

  bool operator > (const Microseconds& aOther) const {
    return mValue > aOther.mValue;
  }
  bool operator >= (const Microseconds& aOther) const {
    return mValue >= aOther.mValue;
  }
  bool operator < (const Microseconds& aOther) const {
    return mValue < aOther.mValue;
  }
  bool operator <= (const Microseconds& aOther) const {
    return mValue <= aOther.mValue;
  }

  int64_t mValue;
};


}
}

#endif // TIME_UNITS_H