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Adds product operator for TimeDelta and Frequency

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Also adding kHz factory function for Frequency class.

Bug: webrtc:9883
Change-Id: Ide44910d50eb9616de2bb0c66b8c62493d2be92e
Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/167725
Commit-Queue: Sebastian Jansson <srte@webrtc.org>
Reviewed-by: Ali Tofigh <alito@webrtc.org>
Cr-Commit-Position: refs/heads/master@{#30416}
This commit is contained in:
Sebastian Jansson
2020-01-29 10:56:25 +01:00
committed by Commit Bot
parent 184ea66aed
commit 1cf15bfe55
2 changed files with 13 additions and 0 deletions
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12
api/units/frequency.h
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@ -32,6 +32,11 @@ class Frequency final : public rtc_units_impl::RelativeUnit<Frequency> {
return FromFraction(1000, hertz); return FromFraction(1000, hertz);
} }
template <typename T> template <typename T>
static constexpr Frequency kHz(T hertz) {
static_assert(std::is_arithmetic<T>::value, "");
return FromFraction(1000000, hertz);
}
template <typename T>
static constexpr Frequency hertz(T hertz) { static constexpr Frequency hertz(T hertz) {
static_assert(std::is_arithmetic<T>::value, ""); static_assert(std::is_arithmetic<T>::value, "");
return FromFraction(1000, hertz); return FromFraction(1000, hertz);
@ -74,6 +79,13 @@ inline constexpr TimeDelta operator/(int64_t nominator,
return TimeDelta::us(nominator * kMegaPerMilli / frequency.millihertz()); return TimeDelta::us(nominator * kMegaPerMilli / frequency.millihertz());
} }
inline constexpr double operator*(Frequency frequency, TimeDelta time_delta) {
return frequency.hertz<double>() * time_delta.seconds<double>();
}
inline constexpr double operator*(TimeDelta time_delta, Frequency frequency) {
return frequency * time_delta;
}
std::string ToString(Frequency value); std::string ToString(Frequency value);
inline std::string ToLogString(Frequency value) { inline std::string ToLogString(Frequency value) {
return ToString(value); return ToString(value);

1
api/units/frequency_unittest.cc
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@ -154,6 +154,7 @@ TEST(FrequencyTest, InfinityOperations) {
TEST(UnitConversionTest, TimeDeltaAndFrequency) { TEST(UnitConversionTest, TimeDeltaAndFrequency) {
EXPECT_EQ(1 / Frequency::hertz(50), TimeDelta::ms(20)); EXPECT_EQ(1 / Frequency::hertz(50), TimeDelta::ms(20));
EXPECT_EQ(1 / TimeDelta::ms(20), Frequency::hertz(50)); EXPECT_EQ(1 / TimeDelta::ms(20), Frequency::hertz(50));
EXPECT_EQ(Frequency::kHz(200) * TimeDelta::ms(2), 400.0);
} }
} // namespace test } // namespace test
} // namespace webrtc } // namespace webrtc