suyu/src/core/core_timing_util.h

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// Copyright 2008 Dolphin Emulator Project / 2017 Citra Emulator Project
// Licensed under GPLv2+
// Refer to the license.txt file included.
#pragma once
#include <chrono>
#include "common/common_types.h"
namespace Core::Timing {
// The below clock rate is based on Switch's clockspeed being widely known as 1.020GHz
// The exact value used is of course unverified.
constexpr u64 BASE_CLOCK_RATE = 1019215872; // Switch clock speed is 1020MHz un/docked
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constexpr u64 CNTFREQ = 19200000; // Value from fusee.
s64 msToCycles(std::chrono::milliseconds ms);
s64 usToCycles(std::chrono::microseconds us);
s64 nsToCycles(std::chrono::nanoseconds ns);
inline std::chrono::milliseconds CyclesToMs(s64 cycles) {
return std::chrono::milliseconds(cycles * 1000 / BASE_CLOCK_RATE);
}
inline std::chrono::nanoseconds CyclesToNs(s64 cycles) {
return std::chrono::nanoseconds(cycles * 1000000000 / BASE_CLOCK_RATE);
}
inline std::chrono::microseconds CyclesToUs(s64 cycles) {
return std::chrono::microseconds(cycles * 1000000 / BASE_CLOCK_RATE);
}
u64 CpuCyclesToClockCycles(u64 ticks);
} // namespace Core::Timing