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/*
* mptTime.h
* ---------
* Purpose: Various time utility functions.
* Notes : (currently none)
* Authors: OpenMPT Devs
* The OpenMPT source code is released under the BSD license. Read LICENSE for more details.
*/
#pragma once
#include "openmpt/all/BuildSettings.hpp"
#include <string>
#include <time.h>
OPENMPT_NAMESPACE_BEGIN
namespace mpt
{
namespace Date
{
#if defined(MODPLUG_TRACKER)
#if MPT_OS_WINDOWS
namespace ANSI
{
// uint64 counts 100ns since 1601-01-01T00:00Z
uint64 Now();
mpt::ustring ToUString(uint64 time100ns); // i.e. 2015-01-15 18:32:01.718
} // namespacee ANSI
#endif // MPT_OS_WINDOWS
#endif // MODPLUG_TRACKER
class Unix
{
// int64 counts 1s since 1970-01-01T00:00Z
private:
int64 Value;
public:
Unix();
explicit Unix(int64 unixtime);
operator int64 () const;
public:
static mpt::Date::Unix FromUTC(tm timeUtc);
tm AsUTC() const;
};
mpt::ustring ToShortenedISO8601(tm date); // i.e. 2015-01-15T18:32:01Z
} // namespace Date
} // namespace mpt
#ifdef MODPLUG_TRACKER
namespace Util
{
#if MPT_OS_WINDOWS
// RAII wrapper around timeBeginPeriod/timeEndPeriod/timeGetTime (on Windows).
// This clock is monotonic, even across changing its resolution.
// This is needed to synchronize time in Steinberg APIs (ASIO and VST).
class MultimediaClock
{
private:
uint32 m_CurrentPeriod;
private:
void Init();
void SetPeriod(uint32 ms);
void Cleanup();
public:
MultimediaClock();
MultimediaClock(uint32 ms);
~MultimediaClock();
public:
// Sets the desired resolution in milliseconds, returns the obtained resolution in milliseconds.
// A parameter of 0 causes the resolution to be reset to system defaults.
// A return value of 0 means the resolution is unknown, but timestamps will still be valid.
uint32 SetResolution(uint32 ms);
// Returns obtained resolution in milliseconds.
// A return value of 0 means the resolution is unknown, but timestamps will still be valid.
uint32 GetResolution() const;
// Returns current instantaneous timestamp in milliseconds.
// The epoch (offset) of the timestamps is undefined but constant until the next system reboot.
// The resolution is the value returned from GetResolution().
uint32 Now() const;
// Returns current instantaneous timestamp in nanoseconds.
// The epoch (offset) of the timestamps is undefined but constant until the next system reboot.
// The resolution is the value returned from GetResolution() in milliseconds.
uint64 NowNanoseconds() const;
};
#endif // MPT_OS_WINDOWS
} // namespace Util
#endif // MODPLUG_TRACKER
OPENMPT_NAMESPACE_END
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