diff options
author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-07 17:32:43 +0000 |
---|---|---|
committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-07 17:32:43 +0000 |
commit | 6bf0a5cb5034a7e684dcc3500e841785237ce2dd (patch) | |
tree | a68f146d7fa01f0134297619fbe7e33db084e0aa /third_party/libwebrtc/api/units/timestamp.h | |
parent | Initial commit. (diff) | |
download | thunderbird-upstream.tar.xz thunderbird-upstream.zip |
Adding upstream version 1:115.7.0.upstream/1%115.7.0upstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to '')
-rw-r--r-- | third_party/libwebrtc/api/units/timestamp.h | 139 |
1 files changed, 139 insertions, 0 deletions
diff --git a/third_party/libwebrtc/api/units/timestamp.h b/third_party/libwebrtc/api/units/timestamp.h new file mode 100644 index 0000000000..8aabe05cad --- /dev/null +++ b/third_party/libwebrtc/api/units/timestamp.h @@ -0,0 +1,139 @@ +/* + * Copyright (c) 2018 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_TIMESTAMP_H_ +#define API_UNITS_TIMESTAMP_H_ + +#ifdef WEBRTC_UNIT_TEST +#include <ostream> // no-presubmit-check TODO(webrtc:8982) +#endif // WEBRTC_UNIT_TEST + +#include <string> +#include <type_traits> + +#include "api/units/time_delta.h" +#include "rtc_base/checks.h" +#include "rtc_base/units/unit_base.h" // IWYU pragma: export + +namespace webrtc { +// Timestamp represents the time that has passed since some unspecified epoch. +// The epoch is assumed to be before any represented timestamps, this means that +// negative values are not valid. The most notable feature is that the +// difference of two Timestamps results in a TimeDelta. +class Timestamp final : public rtc_units_impl::UnitBase<Timestamp> { + public: + template <typename T> + static constexpr Timestamp Seconds(T value) { + static_assert(std::is_arithmetic<T>::value, ""); + return FromFraction(1'000'000, value); + } + template <typename T> + static constexpr Timestamp Millis(T value) { + static_assert(std::is_arithmetic<T>::value, ""); + return FromFraction(1'000, value); + } + template <typename T> + static constexpr Timestamp Micros(T value) { + static_assert(std::is_arithmetic<T>::value, ""); + return FromValue(value); + } + + Timestamp() = delete; + + template <typename T = int64_t> + constexpr T seconds() const { + return ToFraction<1000000, T>(); + } + template <typename T = int64_t> + constexpr T ms() const { + return ToFraction<1000, T>(); + } + template <typename T = int64_t> + constexpr T us() const { + return ToValue<T>(); + } + + constexpr int64_t seconds_or(int64_t fallback_value) const { + return ToFractionOr<1000000>(fallback_value); + } + constexpr int64_t ms_or(int64_t fallback_value) const { + return ToFractionOr<1000>(fallback_value); + } + constexpr int64_t us_or(int64_t fallback_value) const { + return ToValueOr(fallback_value); + } + + constexpr Timestamp operator+(const TimeDelta delta) const { + if (IsPlusInfinity() || delta.IsPlusInfinity()) { + RTC_DCHECK(!IsMinusInfinity()); + RTC_DCHECK(!delta.IsMinusInfinity()); + return PlusInfinity(); + } else if (IsMinusInfinity() || delta.IsMinusInfinity()) { + RTC_DCHECK(!IsPlusInfinity()); + RTC_DCHECK(!delta.IsPlusInfinity()); + return MinusInfinity(); + } + return Timestamp::Micros(us() + delta.us()); + } + constexpr Timestamp operator-(const TimeDelta delta) const { + if (IsPlusInfinity() || delta.IsMinusInfinity()) { + RTC_DCHECK(!IsMinusInfinity()); + RTC_DCHECK(!delta.IsPlusInfinity()); + return PlusInfinity(); + } else if (IsMinusInfinity() || delta.IsPlusInfinity()) { + RTC_DCHECK(!IsPlusInfinity()); + RTC_DCHECK(!delta.IsMinusInfinity()); + return MinusInfinity(); + } + return Timestamp::Micros(us() - delta.us()); + } + constexpr TimeDelta operator-(const Timestamp other) const { + if (IsPlusInfinity() || other.IsMinusInfinity()) { + RTC_DCHECK(!IsMinusInfinity()); + RTC_DCHECK(!other.IsPlusInfinity()); + return TimeDelta::PlusInfinity(); + } else if (IsMinusInfinity() || other.IsPlusInfinity()) { + RTC_DCHECK(!IsPlusInfinity()); + RTC_DCHECK(!other.IsMinusInfinity()); + return TimeDelta::MinusInfinity(); + } + return TimeDelta::Micros(us() - other.us()); + } + constexpr Timestamp& operator-=(const TimeDelta delta) { + *this = *this - delta; + return *this; + } + constexpr Timestamp& operator+=(const TimeDelta delta) { + *this = *this + delta; + return *this; + } + + private: + friend class rtc_units_impl::UnitBase<Timestamp>; + using UnitBase::UnitBase; + static constexpr bool one_sided = true; +}; + +std::string ToString(Timestamp value); +inline std::string ToLogString(Timestamp value) { + return ToString(value); +} + +#ifdef WEBRTC_UNIT_TEST +inline std::ostream& operator<<( // no-presubmit-check TODO(webrtc:8982) + std::ostream& stream, // no-presubmit-check TODO(webrtc:8982) + Timestamp value) { + return stream << ToString(value); +} +#endif // WEBRTC_UNIT_TEST + +} // namespace webrtc + +#endif // API_UNITS_TIMESTAMP_H_ |