mirror of https://github.com/yuzu-emu/yuzu.git
60 lines
1.9 KiB
C++
60 lines
1.9 KiB
C++
// Copyright 2020 yuzu Emulator Project
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// Licensed under GPLv2 or any later version
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// Refer to the license.txt file included.
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#pragma once
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#include <chrono>
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#include "common/common_types.h"
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#include "core/hardware_properties.h"
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namespace Core::Timing {
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namespace detail {
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constexpr u64 CNTFREQ_ADJUSTED = Hardware::CNTFREQ / 1000;
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constexpr u64 BASE_CLOCK_RATE_ADJUSTED = Hardware::BASE_CLOCK_RATE / 1000;
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} // namespace detail
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[[nodiscard]] constexpr s64 msToCycles(std::chrono::milliseconds ms) {
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return ms.count() * detail::BASE_CLOCK_RATE_ADJUSTED;
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}
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[[nodiscard]] constexpr s64 usToCycles(std::chrono::microseconds us) {
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return us.count() * detail::BASE_CLOCK_RATE_ADJUSTED / 1000;
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}
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[[nodiscard]] constexpr s64 nsToCycles(std::chrono::nanoseconds ns) {
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return ns.count() * detail::BASE_CLOCK_RATE_ADJUSTED / 1000000;
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}
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[[nodiscard]] constexpr u64 msToClockCycles(std::chrono::milliseconds ms) {
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return static_cast<u64>(ms.count()) * detail::CNTFREQ_ADJUSTED;
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}
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[[nodiscard]] constexpr u64 usToClockCycles(std::chrono::microseconds us) {
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return us.count() * detail::CNTFREQ_ADJUSTED / 1000;
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}
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[[nodiscard]] constexpr u64 nsToClockCycles(std::chrono::nanoseconds ns) {
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return ns.count() * detail::CNTFREQ_ADJUSTED / 1000000;
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}
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[[nodiscard]] constexpr u64 CpuCyclesToClockCycles(u64 ticks) {
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return ticks * detail::CNTFREQ_ADJUSTED / detail::BASE_CLOCK_RATE_ADJUSTED;
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}
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[[nodiscard]] constexpr std::chrono::milliseconds CyclesToMs(s64 cycles) {
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return std::chrono::milliseconds(cycles / detail::BASE_CLOCK_RATE_ADJUSTED);
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}
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[[nodiscard]] constexpr std::chrono::nanoseconds CyclesToNs(s64 cycles) {
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return std::chrono::nanoseconds(cycles * 1000000 / detail::BASE_CLOCK_RATE_ADJUSTED);
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}
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[[nodiscard]] constexpr std::chrono::microseconds CyclesToUs(s64 cycles) {
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return std::chrono::microseconds(cycles * 1000 / detail::BASE_CLOCK_RATE_ADJUSTED);
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}
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} // namespace Core::Timing
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