various PS2 changes

svn-id: r22971

1 files changed, 126 insertions, 0 deletions

diff --git a/backends/ps2/ps2time.cpp b/backends/ps2/ps2time.cpp
new file mode 100644
index 0000000000..bfccfe1300
--- /dev/null
+++ b/backends/ps2/ps2time.cpp
@@ -0,0 +1,126 @@
+/* ScummVM - Scumm Interpreter
+ * Copyright (C) 2005-2006 The ScummVM project
+ *
+ * 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.
+ *
+ * $URL$
+ * $Id$
+ *
+ */
+
+#include "backends/ps2/systemps2.h"
+#include "eecodyvdfs.h"
+#include <osd_config.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", g_timeSecs / (60 * 60), (g_timeSecs / 60) % 60, g_timeSecs % 60,
+		g_day, g_month, g_year + 2000);
+}
+
+extern "C" time_t time(time_t *p) {
+	return (time_t)g_timeSecs;
+}
+
+extern "C" struct tm *localtime(const time_t *p) {
+	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;
+	}
+
+	static struct tm retStruct;
+	memset(&retStruct, 0, sizeof(retStruct));
+
+	retStruct.tm_hour = currentSecs / (60 * 60);
+	retStruct.tm_min  = (currentSecs / 60) % 60;
+	retStruct.tm_sec  = currentSecs % 60;
+	retStruct.tm_year = g_year + 100;
+	retStruct.tm_mday = g_day;
+	retStruct.tm_mon  = g_month - 1;
+	// tm_wday, tm_yday and tm_isdst are zero for now
+    return &retStruct;
+}