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Add FSTimeToCalendarTime function

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Nintendocustom 2025-06-07 19:51:58 +02:00
parent 162fdabb9d
commit c99ae0f833
2 changed files with 91 additions and 0 deletions
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90
src/Cafe/OS/libs/coreinit/coreinit_Time.cpp
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@ -278,6 +278,95 @@ namespace coreinit
return 31;
}
void dayNumberToCalendarDate(sint64 absoluteDayNumber, OSCalendarTime_t* cal)
{
cal->dayOfWeek = (absoluteDayNumber + 6) % 7;
sint32 year = static_cast<sint32>(absoluteDayNumber / 365);
sint64 numLeapsBeforeYear = getLeapDaysUntilYear(year);
sint64 startDayOfYear = numLeapsBeforeYear + (sint64)year * 365;
while (absoluteDayNumber < startDayOfYear)
{
year--;
numLeapsBeforeYear = getLeapDaysUntilYear(year);
startDayOfYear = numLeapsBeforeYear + (sint64)year * 365;
}
cal->year = year;
sint32 dayOfYear = static_cast<sint32>(absoluteDayNumber - startDayOfYear);
cal->dayOfYear = dayOfYear;
const uint32* monthCumulativeDaysTable = IsLeapYear(year) ? dayToMonthLeapYear : dayToMonth;
sint32 determinedMonth = 11;
for (sint32 i = 1; i < 12; ++i)
{
if (dayOfYear < monthCumulativeDaysTable[i])
{
determinedMonth = i - 1;
break;
}
}
cal->month = determinedMonth;
cal->dayOfMonth = (dayOfYear - monthCumulativeDaysTable[determinedMonth]) + 1;
}
void FSTimeToCalendarTime(uint64 fsTime, OSCalendarTime_t* outCalendarTime)
{
if (!outCalendarTime)
{
return;
}
uint64 totalMicroseconds = fsTime;
const uint64 MICROSECONDS_PER_MILLISECOND = 1000ULL;
const uint64 MICROSECONDS_PER_SECOND = 1000000ULL;
const sint64 SECONDS_PER_DAY = 86400LL;
// The FS epoch begins on 1980-01-01
// This is the number of days from 0000-01-01 to 1980-01-01
const sint64 FS_DAY_EPOCH_OFFSET = 723180LL;
uint64 remainderMicrosecondsInSecond = totalMicroseconds % MICROSECONDS_PER_SECOND;
outCalendarTime->millisecond = static_cast<sint32>(remainderMicrosecondsInSecond / MICROSECONDS_PER_MILLISECOND);
outCalendarTime->microsecond = static_cast<sint32>(remainderMicrosecondsInSecond % MICROSECONDS_PER_MILLISECOND);
sint64 totalSecondsSinceFsEpoch = static_cast<sint64>(totalMicroseconds / MICROSECONDS_PER_SECOND);
sint64 totalDaysRawSinceFsEpoch;
sint64 secondsInDay;
if (totalSecondsSinceFsEpoch >= 0)
{
totalDaysRawSinceFsEpoch = totalSecondsSinceFsEpoch / SECONDS_PER_DAY;
secondsInDay = totalSecondsSinceFsEpoch % SECONDS_PER_DAY;
}
else
{
totalDaysRawSinceFsEpoch = totalSecondsSinceFsEpoch / SECONDS_PER_DAY;
secondsInDay = totalSecondsSinceFsEpoch % SECONDS_PER_DAY;
if (secondsInDay < 0)
{
secondsInDay += SECONDS_PER_DAY;
totalDaysRawSinceFsEpoch--;
}
}
sint64 absoluteDayNumber = totalDaysRawSinceFsEpoch + FS_DAY_EPOCH_OFFSET;
dayNumberToCalendarDate(absoluteDayNumber, outCalendarTime);
outCalendarTime->second = static_cast<sint32>(secondsInDay % 60);
outCalendarTime->minute = static_cast<sint32>((secondsInDay / 60) % 60);
outCalendarTime->hour = static_cast<sint32>((secondsInDay / 3600));
}
void verifyDateMatch(OSCalendarTime_t* ct1, OSCalendarTime_t* ct2)
{
sint64 m1 = ct1->millisecond * 1000 + ct1->microsecond;
@ -360,6 +449,7 @@ namespace coreinit
cafeExportRegister("coreinit", OSTicksToCalendarTime, LogType::Placeholder);
cafeExportRegister("coreinit", OSCalendarTimeToTicks, LogType::Placeholder);
cafeExportRegister("coreinit", FSTimeToCalendarTime, LogType::Placeholder);
//timeTest();
}

1
src/Cafe/OS/libs/coreinit/coreinit_Time.h
View file

@ -50,6 +50,7 @@ namespace coreinit
};
void OSTicksToCalendarTime(uint64 ticks, OSCalendarTime_t* calenderStruct);
void FSTimeToCalendarTime(uint64 fsTime_microseconds, OSCalendarTime_t* outCalendarTime);
uint64 OSGetSystemTime();
uint64 OSGetTime();