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/* ScummVM - Graphic Adventure Engine
*
* ScummVM is the legal property of its developers, whose names
* are too numerous to list here. Please refer to the COPYRIGHT
* file distributed with this source distribution.
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version 2
* of the License, or (at your option) any later version.
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
*
*/
#define FORBIDDEN_SYMBOL_EXCEPTION_time_h
#include "backends/platform/ps2/systemps2.h"
#include "backends/platform/ps2/ps2debug.h"
#include "eecodyvdfs.h"
#include <osd_config.h>
#include <time.h>
#define FROM_BCD(a) ((a >> 4) * 10 + (a & 0xF))
static int g_timeSecs;
static int g_day, g_month, g_year;
static int g_lastTimeCheck;
extern volatile uint32 msecCount;
void buildNewDate(int dayDiff) {
static int daysPerMonth[12] = { 31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31 };
if (((g_year % 4) == 0) && (((g_year % 100) != 0) || ((g_year % 1000) == 0)))
daysPerMonth[1] = 29;
else
daysPerMonth[1] = 28;
if (dayDiff == -1) {
g_day--;
if (g_day == 0) {
g_month--;
if (g_month == 0) {
g_year--;
g_month = 12;
}
g_day = daysPerMonth[g_month - 1];
}
} else if (dayDiff == 1) {
g_day++;
if (g_day > daysPerMonth[g_month - 1]) {
g_day = 1;
g_month++;
if (g_month > 12) {
g_month = 1;
g_year++;
}
}
}
}
#define SECONDS_PER_DAY (24 * 60 * 60)
void OSystem_PS2::readRtcTime(void) {
struct CdClock cdClock;
readRTC(&cdClock);
g_lastTimeCheck = getMillis();
if (cdClock.stat) {
msgPrintf(5000, "Unable to read RTC time, EC: %d\n", cdClock.stat);
g_day = g_month = 1;
g_year = 0;
g_timeSecs = 0;
} else {
int gmtOfs = configGetTimezone();
if (configIsDaylightSavingEnabled())
gmtOfs += 60;
int timeSecs = (FROM_BCD(cdClock.hour) * 60 + FROM_BCD(cdClock.minute)) * 60 + FROM_BCD(cdClock.second);
timeSecs -= 9 * 60 * 60; // minus 9 hours, JST -> GMT conversion
timeSecs += gmtOfs * 60; // GMT -> timezone the user selected
g_day = FROM_BCD(cdClock.day);
g_month = FROM_BCD(cdClock.month);
g_year = FROM_BCD(cdClock.year);
if (timeSecs < 0) {
buildNewDate(-1);
timeSecs += SECONDS_PER_DAY;
} else if (timeSecs >= SECONDS_PER_DAY) {
buildNewDate(+1);
timeSecs -= SECONDS_PER_DAY;
}
g_timeSecs = (uint32)timeSecs;
}
sioprintf("Time: %d:%02d:%02d - %d.%d.%4d\n", g_timeSecs / (60 * 60), (g_timeSecs / 60) % 60, g_timeSecs % 60,
g_day, g_month, g_year + 2000);
}
// Tomohiko Sakamoto's 1993 algorithm for any Gregorian date
static int dayOfWeek(int y, int m, int d) {
static const int t[] = { 0, 3, 2, 5, 0, 3, 5, 1, 4, 6, 2, 4 };
y -= m < 3;
return (y + y / 4 - y / 100 + y / 400 + t[m - 1] + d) % 7;
}
void OSystem_PS2::getTimeAndDate(TimeDate &t) const {
uint32 currentSecs = g_timeSecs + (msecCount - g_lastTimeCheck) / 1000;
if (currentSecs >= SECONDS_PER_DAY) {
buildNewDate(+1);
g_lastTimeCheck += SECONDS_PER_DAY * 1000;
currentSecs = g_timeSecs + (msecCount - g_lastTimeCheck) / 1000;
}
t.tm_hour = currentSecs / (60 * 60);
t.tm_min = (currentSecs / 60) % 60;
t.tm_sec = currentSecs % 60;
t.tm_year = g_year + 100;
t.tm_mday = g_day;
t.tm_mon = g_month - 1;
t.tm_wday = dayOfWeek(t.tm_year, t.tm_mon, t.tm_mday);
}
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