mirror of
https://github.com/mollyim/webrtc.git
synced 2025-05-15 23:01:21 +01:00
26b5e35276
Bug: webrtc:10674 Change-Id: Ic0ddca46d8522d994bbeba072a73836b506fe40f Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/138261 Commit-Queue: Sebastian Jansson <srte@webrtc.org> Reviewed-by: Niels Moller <nisse@webrtc.org> Cr-Commit-Position: refs/heads/master@{#28192}
89 lines
2.7 KiB
C++
89 lines
2.7 KiB
C++
/*
|
|
* Copyright (c) 2019 The WebRTC project authors. All Rights Reserved.
|
|
*
|
|
* Use of this source code is governed by a BSD-style license
|
|
* that can be found in the LICENSE file in the root of the source
|
|
* tree. An additional intellectual property rights grant can be found
|
|
* in the file PATENTS. All contributing project authors may
|
|
* be found in the AUTHORS file in the root of the source tree.
|
|
*/
|
|
#ifndef API_UNITS_FREQUENCY_H_
|
|
#define API_UNITS_FREQUENCY_H_
|
|
|
|
#ifdef UNIT_TEST
|
|
#include <ostream> // no-presubmit-check TODO(webrtc:8982)
|
|
#endif // UNIT_TEST
|
|
|
|
#include <cstdlib>
|
|
#include <limits>
|
|
#include <string>
|
|
#include <type_traits>
|
|
|
|
#include "api/units/time_delta.h"
|
|
#include "rtc_base/units/unit_base.h"
|
|
|
|
namespace webrtc {
|
|
|
|
class Frequency final : public rtc_units_impl::RelativeUnit<Frequency> {
|
|
public:
|
|
Frequency() = delete;
|
|
template <int64_t hertz>
|
|
static constexpr Frequency Hertz() {
|
|
return FromStaticFraction<hertz, 1000>();
|
|
}
|
|
template <typename T>
|
|
static Frequency hertz(T hertz) {
|
|
static_assert(std::is_arithmetic<T>::value, "");
|
|
return FromFraction<1000>(hertz);
|
|
}
|
|
template <typename T>
|
|
static Frequency millihertz(T hertz) {
|
|
static_assert(std::is_arithmetic<T>::value, "");
|
|
return FromValue(hertz);
|
|
}
|
|
template <typename T = int64_t>
|
|
T hertz() const {
|
|
return ToFraction<1000, T>();
|
|
}
|
|
template <typename T = int64_t>
|
|
T millihertz() const {
|
|
return ToValue<T>();
|
|
}
|
|
|
|
private:
|
|
friend class rtc_units_impl::UnitBase<Frequency>;
|
|
using RelativeUnit::RelativeUnit;
|
|
static constexpr bool one_sided = true;
|
|
};
|
|
|
|
inline Frequency operator/(int64_t nominator, const TimeDelta& interval) {
|
|
constexpr int64_t kKiloPerMicro = 1000 * 1000000;
|
|
RTC_DCHECK_LE(nominator, std::numeric_limits<int64_t>::max() / kKiloPerMicro);
|
|
RTC_CHECK(interval.IsFinite());
|
|
RTC_CHECK(!interval.IsZero());
|
|
return Frequency::millihertz(nominator * kKiloPerMicro / interval.us());
|
|
}
|
|
|
|
inline TimeDelta operator/(int64_t nominator, const Frequency& frequency) {
|
|
constexpr int64_t kMegaPerMilli = 1000000 * 1000;
|
|
RTC_DCHECK_LE(nominator, std::numeric_limits<int64_t>::max() / kMegaPerMilli);
|
|
RTC_CHECK(frequency.IsFinite());
|
|
RTC_CHECK(!frequency.IsZero());
|
|
return TimeDelta::us(nominator * kMegaPerMilli / frequency.millihertz());
|
|
}
|
|
|
|
std::string ToString(Frequency value);
|
|
inline std::string ToLogString(Frequency value) {
|
|
return ToString(value);
|
|
}
|
|
|
|
#ifdef UNIT_TEST
|
|
inline std::ostream& operator<<( // no-presubmit-check TODO(webrtc:8982)
|
|
std::ostream& stream, // no-presubmit-check TODO(webrtc:8982)
|
|
Frequency value) {
|
|
return stream << ToString(value);
|
|
}
|
|
#endif // UNIT_TEST
|
|
|
|
} // namespace webrtc
|
|
#endif // API_UNITS_FREQUENCY_H_
|