gecko-dev/dom/media/TimeUnits.h

63 строки
1.4 KiB
C++

/* -*- 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