time_t dvbdate_to_unixtime(dvbdate_t dvbdate)
{
int k = 0;
struct tm tm;
double mjd;
/* check for the undefined value */
if ((dvbdate[0] == 0xff) &&
(dvbdate[1] == 0xff) &&
(dvbdate[2] == 0xff) &&
(dvbdate[3] == 0xff) &&
(dvbdate[4] == 0xff)) {
return -1;
}
memset(&tm, 0, sizeof(tm));
mjd = (dvbdate[0] << 8) | dvbdate[1];
tm.tm_year = (int) ((mjd - 15078.2) / 365.25);
tm.tm_mon = (int) (((mjd - 14956.1) - (int) (tm.tm_year * 365.25)) / 30.6001);
tm.tm_mday = (int) mjd - 14956 - (int) (tm.tm_year * 365.25) - (int) (tm.tm_mon * 30.6001);
if ((tm.tm_mon == 14) || (tm.tm_mon == 15)) k = 1;
tm.tm_year += k;
tm.tm_mon = tm.tm_mon - 2 - k * 12;
tm.tm_sec = bcd_to_integer(dvbdate[4]);
tm.tm_min = bcd_to_integer(dvbdate[3]);
tm.tm_hour = bcd_to_integer(dvbdate[2]);
return mktime(&tm);
}
void cdp1879_device::update_rtc()
{
set_clock_register(RTC_SECOND, bcd_to_integer(m_regs[R_CNT_SECONDS]));
set_clock_register(RTC_MINUTE, bcd_to_integer(m_regs[R_CNT_MINUTES]));
set_clock_register(RTC_HOUR, bcd_to_integer(m_regs[R_CNT_HOURS]));
set_clock_register(RTC_DAY, bcd_to_integer(m_regs[R_CNT_DAYOFMONTH]));
set_clock_register(RTC_MONTH, bcd_to_integer(m_regs[R_CNT_MONTH]));
}
int dvbhhmm_to_seconds(dvbhhmm_t dvbhhmm)
{
int seconds = 0;
seconds += (bcd_to_integer(dvbhhmm[0]) * 60 * 60);
seconds += (bcd_to_integer(dvbhhmm[1]) * 60);
return seconds;
}
int dvbduration_to_seconds(dvbduration_t dvbduration)
{
int seconds = 0;
seconds += (bcd_to_integer(dvbduration[0]) * 60 * 60);
seconds += (bcd_to_integer(dvbduration[1]) * 60);
seconds += bcd_to_integer(dvbduration[2]);
return seconds;
}
inline void upd1990a_device::advance_seconds()
{
static const int days_per_month[] = { 31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31 };
int seconds = bcd_to_integer(m_time_counter[0]);
int minutes = bcd_to_integer(m_time_counter[1]);
int hours = bcd_to_integer(m_time_counter[2]);
int days = bcd_to_integer(m_time_counter[3]);
int day_of_week = m_time_counter[4] & 0x0f;
int month = (m_time_counter[4] & 0xf0) >> 4;
seconds++;
if (seconds > 59)
{
seconds = 0;
minutes++;
}
if (minutes > 59)
{
minutes = 0;
hours++;
}
if (hours > 23)
{
hours = 0;
days++;
day_of_week++;
}
if (day_of_week > 6)
{
day_of_week++;
}
if (days > days_per_month[month - 1])
{
days = 1;
month++;
}
if (month > 12)
{
month = 1;
}
m_time_counter[0] = convert_to_bcd(seconds);
m_time_counter[1] = convert_to_bcd(minutes);
m_time_counter[2] = convert_to_bcd(hours);
m_time_counter[3] = convert_to_bcd(days);
m_time_counter[4] = (month << 4) | day_of_week;
}
