osd_config.c

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/*
# _____     ___ ____     ___ ____
#  ____|   |    ____|   |        | |____|
# |     ___|   |____ ___|    ____| |    \    PS2DEV Open Source Project.
#-----------------------------------------------------------------------
# Copyright 2001-2004, ps2dev - http://www.ps2dev.org
# Licenced under Academic Free License version 2.0
# Review ps2sdk README & LICENSE files for further details.
*/

 
#include <tamtypes.h>
#include <kernel.h>
#include <stdio.h>
#include <sys/fcntl.h>
#include <sys/unistd.h>
#include <string.h>
#include <osd_config.h>
#include <rom0_info.h>

typedef struct
{
    s16 timezoneOffset;
    u8 screenType;
    u8 dateFormat;
    u8 language;
    u8 spdifMode;
    u8 daylightSaving;
    u8 timeFormat;
} ConfigParamT10K;
 
extern ConfigParamT10K g_t10KConfig;
 
ConfigParamT10K g_t10KConfig;
 
__attribute__((constructor))
static void __t10KConfigInitialize(void)
{
    g_t10KConfig.timezoneOffset = 540;
    g_t10KConfig.screenType = TV_SCREEN_43;
    g_t10KConfig.dateFormat = DATE_YYYYMMDD;
    g_t10KConfig.language = LANGUAGE_JAPANESE;
}
 
static inline unsigned char tobcd(unsigned char dec)
{
    return dec + (dec / 10) * 6;
}
 
void converttobcd(sceCdCLOCK *time)
{
    time->second = tobcd(time->second);
    time->minute = tobcd(time->minute);
    time->hour   = tobcd(time->hour);
    time->day    = tobcd(time->day);
    time->month  = tobcd(time->month);
    time->year   = tobcd(time->year);
}
 
static inline unsigned char frombcd(unsigned char bcd)
{
    return bcd - (bcd >> 4) * 6;
}
 
 
void convertfrombcd(sceCdCLOCK *time)
{
    time->second = frombcd(time->second);
    time->minute = frombcd(time->minute);
    time->hour   = frombcd(time->hour);
    time->day    = frombcd(time->day);
    time->month  = frombcd(time->month);
    time->year   = frombcd(time->year);
}
 
static const unsigned char gDaysInMonths[12] = {
    31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31};
 
static void adddate(sceCdCLOCK *time)
{
    // get the days in each month and fix up feb depending on leap year
    unsigned char days_in_months[12];
    memcpy(days_in_months, gDaysInMonths, 12);
    if ((time->year & 3) == 0)
        days_in_months[1] = 29;
 
    // increment the day and check its within the "day of the month" bounds
    time->day++;
    if (time->day > days_in_months[time->month - 1]) {
        time->day = 1;
 
        // increment the month and check its within the "months in a year" bounds
        time->month++;
        if (time->month == 13) {
            time->month = 1;
 
            // check the year and increment it
            time->year++;
            if (time->year == 100) {
                time->year = 0;
            }
        }
    }
}
 
static void subdate(sceCdCLOCK *time)
{
    // get the days in each month and fix up feb depending on leap year
    unsigned char days_in_months[12];
    memcpy(days_in_months, gDaysInMonths, 12);
    if ((time->year & 3) == 0)
        days_in_months[1] = 29;
 
    // decrement the day and check its within the "day of the month" bounds
    time->day--;
    if (time->day == 0) {
        // decrement the month and check its within the "months in a year" bounds
        time->month--;
        if (time->month == 0) {
            time->month = 12;
 
            // check the year and decrement it
            if (time->year == 0)
                time->year = 99;
            else
                time->year--;
        }
 
        time->day = days_in_months[time->month - 1];
    }
}
 
static void addhour(sceCdCLOCK *time)
{
    time->hour++;
    if (time->hour == 24) {
        adddate(time);
        time->hour = 0;
    }
}
 
static void subhour(sceCdCLOCK *time)
{
    if (time->hour == 0) {
        subdate(time);
        time->hour = 23;
    } else
        time->hour--;
}
 
void __adjustTime(sceCdCLOCK *time, int offset)
{
    convertfrombcd(time);
    offset += time->minute;
 
    if (offset >= 0) {
        while (offset >= 60) {
            addhour(time);
            offset -= 60;
        }
        time->minute = offset;
    } else {
        while (offset < 0) {
            subhour(time);
            offset += 60;
        }
        time->minute = offset;
    }
 
    converttobcd(time);
}
 
int IsEarlyJap(ConfigParam config)
{
    return config.version == 0;
}
 
int configGetLanguage(void)
{
    ConfigParam config;
 
    if (IsT10K())
        return g_t10KConfig.language;
 
    GetOsdConfigParam(&config);
    if (IsEarlyJap(config))
        return config.japLanguage;
    return config.language;
}
 
void configSetLanguage(int language)
{
    ConfigParam config;
 
    // make sure language is valid
    if (language < LANGUAGE_JAPANESE || language > LANGUAGE_PORTUGUESE)
        return;
    if (IsT10K())
        g_t10KConfig.language = language;
 
    // set language
    GetOsdConfigParam(&config);
    if (IsEarlyJap(config))
        config.japLanguage = language;
    else
        config.language = language;
    SetOsdConfigParam(&config);
}
 
int configGetTvScreenType(void)
{
    ConfigParam config;
 
    if (IsT10K())
        return g_t10KConfig.screenType;
 
    GetOsdConfigParam(&config);
    return config.screenType;
}
 
void configSetTvScreenType(int screenType)
{
    ConfigParam config;
 
    // make sure screen type is valid
    if (screenType < TV_SCREEN_43 || screenType > TV_SCREEN_169)
        return;
    if (IsT10K())
        g_t10KConfig.screenType = screenType;
 
    // set screen type
    GetOsdConfigParam(&config);
    config.screenType = screenType;
    SetOsdConfigParam(&config);
}
 
int configGetDateFormat(void)
{
    ConfigParam config;
    Config2Param config2;
 
    if (IsT10K())
        return g_t10KConfig.dateFormat;
 
    GetOsdConfigParam(&config);
    if (IsEarlyJap(config))
        return 0;
    GetOsdConfigParam2(&config2, sizeof(config2), 0);
    return config2.dateFormat;
}
 
void configSetDateFormat(int dateFormat)
{
    ConfigParam config;
    Config2Param config2;
 
    // make sure date format is valid
    if (dateFormat < DATE_YYYYMMDD || dateFormat > DATE_DDMMYYYY)
        return;
    if (IsT10K())
        g_t10KConfig.dateFormat = dateFormat;
 
    // set date format
    GetOsdConfigParam(&config);
    if (IsEarlyJap(config))
        return;
    GetOsdConfigParam2(&config2, sizeof(config2), 0);
    config2.dateFormat = dateFormat;
    SetOsdConfigParam2(&config2, sizeof(config2), 0);
}
 
int configGetTimeFormat(void)
{
    ConfigParam config;
    Config2Param config2;
 
    if (IsT10K())
        return g_t10KConfig.timeFormat;
 
    GetOsdConfigParam(&config);
    if (IsEarlyJap(config))
        return 0;
    GetOsdConfigParam2(&config2, sizeof(config2), 0);
    return config2.timeFormat;
}
 
void configSetTimeFormat(int timeFormat)
{
    ConfigParam config;
    Config2Param config2;
 
    // make sure time format is valid
    if (timeFormat < TIME_24H || timeFormat > TIME_12H)
        return;
    if (IsT10K())
        g_t10KConfig.timeFormat = timeFormat;
 
    // set time format
    GetOsdConfigParam(&config);
    if (IsEarlyJap(config))
        return;
    GetOsdConfigParam2(&config2, sizeof(config2), 0);
    config2.timeFormat = timeFormat;
    SetOsdConfigParam2(&config2, sizeof(config2), 0);
}
 
int configGetTimezone(void)
{
    ConfigParam config;
    int timezoneOffset;
 
    if (IsT10K())
    {
        timezoneOffset = g_t10KConfig.timezoneOffset;
    }
    else
    {
        GetOsdConfigParam(&config);
        if (IsEarlyJap(config))
        {
            timezoneOffset = 540;
        }
        else
        {
            timezoneOffset = config.timezoneOffset;
            // Check if this is negative, and manually make it positive using bit manipulation
            if ((timezoneOffset & 0x400) != 0)
            {
                // Flip bits
                timezoneOffset ^= 0x7ff;
                // Add one
                timezoneOffset += 1;
                // Make it negative
                timezoneOffset *= -1;
            }
        }
    }
    return timezoneOffset;
}
 
void configSetTimezone(int timezoneOffset)
{
    ConfigParam config;
 
    // set offset from GMT
    if (IsT10K())
        g_t10KConfig.timezoneOffset = timezoneOffset;
 
    GetOsdConfigParam(&config);
    if (IsEarlyJap(config))
        return;
 
    {
        u32 wantedTimezoneOffset;
 
        // Reduce it to signed 11 bits if it is negative using bit manipulation
        if (timezoneOffset < 0)
        {
            // Make it positive
            wantedTimezoneOffset = -timezoneOffset;
            // Subtract one
            wantedTimezoneOffset -= 1;
            // Flip bits
            wantedTimezoneOffset ^= 0x7ff;
        }
        else
        {
            wantedTimezoneOffset = timezoneOffset;
        }
 
        config.timezoneOffset = wantedTimezoneOffset;
    }
 
    SetOsdConfigParam(&config);
}
 
int configIsSpdifEnabled(void)
{
    ConfigParam config;
 
    if (IsT10K())
        return g_t10KConfig.spdifMode ^ 1;
 
    GetOsdConfigParam(&config);
    return config.spdifMode ^ 1;
}
 
void configSetSpdifEnabled(int enabled)
{
    ConfigParam config;
 
    if (IsT10K())
        g_t10KConfig.spdifMode = enabled ^ 1;
 
    GetOsdConfigParam(&config);
    config.spdifMode = enabled ^ 1;
    SetOsdConfigParam(&config);
}
 
int configIsDaylightSavingEnabled(void)
{
    ConfigParam config;
    Config2Param config2;
 
    if (IsT10K())
        return g_t10KConfig.daylightSaving;
 
    GetOsdConfigParam(&config);
    if (IsEarlyJap(config))
        return 0;
    GetOsdConfigParam2(&config2, sizeof(config2), 0);
 
    return config2.daylightSaving;
}
 
void configSetDaylightSavingEnabled(int daylightSaving)
{
    ConfigParam config;
    Config2Param config2;
 
    if (IsT10K())
        g_t10KConfig.daylightSaving = daylightSaving;
 
    GetOsdConfigParam(&config);
    if (IsEarlyJap(config))
        return;
    GetOsdConfigParam2(&config2, sizeof(config2), 0);
    config2.daylightSaving = daylightSaving;
    SetOsdConfigParam2(&config2, sizeof(config2), 0);
}
 
void configConvertToGmtTime(sceCdCLOCK *time)
{
    __adjustTime(time, -540);
}
 
void configConvertToLocalTime(sceCdCLOCK *time)
{
    int timezone_offset = configGetTimezone();
    int daylight_saving = configIsDaylightSavingEnabled();
    __adjustTime(time, timezone_offset - 540 + (daylight_saving * 60));
}