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libpicofe/common/emu.c
notaz 5ff8efa9e5 simple profiler added 
git-svn-id: file:///home/notaz/opt/svn/PicoDrive/platform@850 be3aeb3a-fb24-0410-a615-afba39da0efa
2009-12-31 15:51:40 +00:00

1589 lines
39 KiB
C
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// (c) Copyright 2006-2009 notaz, All rights reserved.
// Free for non-commercial use.
// For commercial use, separate licencing terms must be obtained.
#include <stdio.h>
#include <stdlib.h>
#include <stdarg.h>
#ifndef NO_SYNC
#include <unistd.h>
#endif
#include "emu.h"
#include "menu.h"
#include "fonts.h"
#include "lprintf.h"
#include "config.h"
#include "plat.h"
#include "input.h"
#include "posix.h"
#include <pico/pico_int.h>
#include <pico/patch.h>
#include <pico/cd/cue.h>
#define STATUS_MSG_TIMEOUT 2000
void *g_screen_ptr;
#if !SCREEN_SIZE_FIXED
int g_screen_width = SCREEN_WIDTH;
int g_screen_height = SCREEN_HEIGHT;
#endif
char *PicoConfigFile = "config.cfg";
currentConfig_t currentConfig, defaultConfig;
int state_slot = 0;
int config_slot = 0, config_slot_current = 0;
int pico_pen_x = 320/2, pico_pen_y = 240/2;
int pico_inp_mode = 0;
int engineState = PGS_Menu;
/* tmp buff to reduce stack usage for plats with small stack */
static char static_buff[512];
/* TODO: len checking */
char rom_fname_reload[512];
char rom_fname_loaded[512];
int rom_loaded = 0;
int reset_timing = 0;
static unsigned int notice_msg_time; /* when started showing */
static char noticeMsg[40];
unsigned char *movie_data = NULL;
static int movie_size = 0;
/* don't use tolower() for easy old glibc binary compatibility */
static void strlwr_(char *string)
{
char *p;
for (p = string; *p; p++)
if ('A' <= *p && *p <= 'Z')
*p += 'a' - 'A';
}
static int try_rfn_cut(char *fname)
{
FILE *tmp;
char *p;
p = fname + strlen(fname) - 1;
for (; p > fname; p--)
if (*p == '.') break;
*p = 0;
if((tmp = fopen(fname, "rb"))) {
fclose(tmp);
return 1;
}
return 0;
}
static void get_ext(const char *file, char *ext)
{
const char *p;
p = file + strlen(file) - 4;
if (p < file) p = file;
strncpy(ext, p, 4);
ext[4] = 0;
strlwr_(ext);
}
void emu_status_msg(const char *format, ...)
{
va_list vl;
int ret;
va_start(vl, format);
ret = vsnprintf(noticeMsg, sizeof(noticeMsg), format, vl);
va_end(vl);
/* be sure old text gets overwritten */
for (; ret < 28; ret++)
noticeMsg[ret] = ' ';
noticeMsg[ret] = 0;
notice_msg_time = plat_get_ticks_ms();
}
static const char * const biosfiles_us[] = { "us_scd1_9210", "us_scd2_9306", "SegaCDBIOS9303" };
static const char * const biosfiles_eu[] = { "eu_mcd1_9210", "eu_mcd2_9306", "eu_mcd2_9303" };
static const char * const biosfiles_jp[] = { "jp_mcd1_9112", "jp_mcd1_9111" };
static int find_bios(int region, char **bios_file)
{
int i, count;
const char * const *files;
FILE *f = NULL;
if (region == 4) { // US
files = biosfiles_us;
count = sizeof(biosfiles_us) / sizeof(char *);
} else if (region == 8) { // EU
files = biosfiles_eu;
count = sizeof(biosfiles_eu) / sizeof(char *);
} else if (region == 1 || region == 2) {
files = biosfiles_jp;
count = sizeof(biosfiles_jp) / sizeof(char *);
} else {
return 0;
}
for (i = 0; i < count; i++)
{
emu_make_path(static_buff, files[i], sizeof(static_buff) - 4);
strcat(static_buff, ".bin");
f = fopen(static_buff, "rb");
if (f) break;
static_buff[strlen(static_buff) - 4] = 0;
strcat(static_buff, ".zip");
f = fopen(static_buff, "rb");
if (f) break;
}
if (f) {
lprintf("using bios: %s\n", static_buff);
fclose(f);
if (bios_file)
*bios_file = static_buff;
return 1;
} else {
sprintf(static_buff, "no %s BIOS files found, read docs",
region != 4 ? (region == 8 ? "EU" : "JAP") : "USA");
me_update_msg(static_buff);
return 0;
}
}
/* check if the name begins with BIOS name */
/*
static int emu_isBios(const char *name)
{
int i;
for (i = 0; i < sizeof(biosfiles_us)/sizeof(biosfiles_us[0]); i++)
if (strstr(name, biosfiles_us[i]) != NULL) return 1;
for (i = 0; i < sizeof(biosfiles_eu)/sizeof(biosfiles_eu[0]); i++)
if (strstr(name, biosfiles_eu[i]) != NULL) return 1;
for (i = 0; i < sizeof(biosfiles_jp)/sizeof(biosfiles_jp[0]); i++)
if (strstr(name, biosfiles_jp[i]) != NULL) return 1;
return 0;
}
*/
static unsigned char id_header[0x100];
/* checks if fname points to valid MegaCD image */
static int emu_cd_check(int *pregion, const char *fname_in)
{
const char *fname = fname_in;
unsigned char buf[32];
pm_file *cd_f;
int region = 4; // 1: Japan, 4: US, 8: Europe
char ext[5];
cue_track_type type = CT_UNKNOWN;
cue_data_t *cue_data = NULL;
get_ext(fname_in, ext);
if (strcasecmp(ext, ".cue") == 0) {
cue_data = cue_parse(fname_in);
if (cue_data != NULL) {
fname = cue_data->tracks[1].fname;
type = cue_data->tracks[1].type;
}
else
return -1;
}
cd_f = pm_open(fname);
if (cue_data != NULL)
cue_destroy(cue_data);
if (cd_f == NULL) return 0; // let the upper level handle this
if (pm_read(buf, 32, cd_f) != 32) {
pm_close(cd_f);
return -1;
}
if (!strncasecmp("SEGADISCSYSTEM", (char *)buf+0x00, 14)) {
if (type && type != CT_ISO)
elprintf(EL_STATUS, ".cue has wrong type: %i", type);
type = CT_ISO; // Sega CD (ISO)
}
if (!strncasecmp("SEGADISCSYSTEM", (char *)buf+0x10, 14)) {
if (type && type != CT_BIN)
elprintf(EL_STATUS, ".cue has wrong type: %i", type);
type = CT_BIN; // Sega CD (BIN)
}
if (type == CT_UNKNOWN) {
pm_close(cd_f);
return 0;
}
pm_seek(cd_f, (type == CT_ISO) ? 0x100 : 0x110, SEEK_SET);
pm_read(id_header, sizeof(id_header), cd_f);
/* it seems we have a CD image here. Try to detect region now.. */
pm_seek(cd_f, (type == CT_ISO) ? 0x100+0x10B : 0x110+0x10B, SEEK_SET);
pm_read(buf, 1, cd_f);
pm_close(cd_f);
if (buf[0] == 0x64) region = 8; // EU
if (buf[0] == 0xa1) region = 1; // JAP
lprintf("detected %s Sega/Mega CD image with %s region\n",
type == CT_BIN ? "BIN" : "ISO", region != 4 ? (region == 8 ? "EU" : "JAP") : "USA");
if (pregion != NULL) *pregion = region;
return type;
}
static int detect_media(const char *fname)
{
static const short sms_offsets[] = { 0x7ff0, 0x3ff0, 0x1ff0 };
static const char *sms_exts[] = { "sms", "gg", "sg" };
static const char *md_exts[] = { "gen", "bin", "smd" };
char buff0[32], buff[32];
unsigned short *d16;
pm_file *pmf;
char ext[5];
int i;
get_ext(fname, ext);
// detect wrong extensions
if (!strcmp(ext, ".srm") || !strcmp(ext, "s.gz") || !strcmp(ext, ".mds")) // s.gz ~ .mds.gz
return PM_BAD;
/* don't believe in extensions, except .cue */
if (strcasecmp(ext, ".cue") == 0)
return PM_CD;
pmf = pm_open(fname);
if (pmf == NULL)
return PM_BAD;
if (pm_read(buff0, 32, pmf) != 32) {
pm_close(pmf);
return PM_BAD;
}
if (strncasecmp("SEGADISCSYSTEM", buff0 + 0x00, 14) == 0 ||
strncasecmp("SEGADISCSYSTEM", buff0 + 0x10, 14) == 0) {
pm_close(pmf);
return PM_CD;
}
/* check for SMD evil */
if (pmf->size >= 0x4200 && (pmf->size & 0x3fff) == 0x200) {
if (pm_seek(pmf, sms_offsets[0] + 0x200, SEEK_SET) == sms_offsets[0] + 0x200 &&
pm_read(buff, 16, pmf) == 16 &&
strncmp("TMR SEGA", buff, 8) == 0)
goto looks_like_sms;
/* could parse further but don't bother */
goto extension_check;
}
/* MD header? Act as TMSS BIOS here */
if (pm_seek(pmf, 0x100, SEEK_SET) == 0x100 && pm_read(buff, 16, pmf) == 16) {
if (strncmp(buff, "SEGA", 4) == 0 || strncmp(buff, " SEG", 4) == 0)
goto looks_like_md;
}
for (i = 0; i < array_size(sms_offsets); i++) {
if (pm_seek(pmf, sms_offsets[i], SEEK_SET) != sms_offsets[i])
continue;
if (pm_read(buff, 16, pmf) != 16)
continue;
if (strncmp("TMR SEGA", buff, 8) == 0)
goto looks_like_sms;
}
extension_check:
/* probably some headerless thing. Maybe check the extension after all. */
for (i = 0; i < array_size(md_exts); i++)
if (strcasecmp(pmf->ext, md_exts[i]) == 0)
goto looks_like_md;
for (i = 0; i < array_size(sms_exts); i++)
if (strcasecmp(pmf->ext, sms_exts[i]) == 0)
goto looks_like_sms;
/* If everything else fails, make a guess on the reset vector */
d16 = (unsigned short *)(buff0 + 4);
if ((((d16[0] << 16) | d16[1]) & 0xffffff) >= pmf->size) {
lprintf("bad MD reset vector, assuming SMS\n");
goto looks_like_sms;
}
looks_like_md:
pm_close(pmf);
return PM_MD_CART;
looks_like_sms:
pm_close(pmf);
return PM_MARK3;
}
static int extract_text(char *dest, const unsigned char *src, int len, int swab)
{
char *p = dest;
int i;
if (swab) swab = 1;
for (i = len - 1; i >= 0; i--)
{
if (src[i^swab] != ' ') break;
}
len = i + 1;
for (i = 0; i < len; i++)
{
unsigned char s = src[i^swab];
if (s >= 0x20 && s < 0x7f && s != '#' && s != '|' &&
s != '[' && s != ']' && s != '\\')
{
*p++ = s;
}
else
{
sprintf(p, "\\%02x", s);
p += 3;
}
}
return p - dest;
}
static char *emu_make_rom_id(void)
{
static char id_string[3+0xe*3+0x3*3+0x30*3+3];
int pos, swab = 1;
if (PicoAHW & PAHW_MCD) {
strcpy(id_string, "CD|");
swab = 0;
}
else strcpy(id_string, "MD|");
pos = 3;
pos += extract_text(id_string + pos, id_header + 0x80, 0x0e, swab); // serial
id_string[pos] = '|'; pos++;
pos += extract_text(id_string + pos, id_header + 0xf0, 0x03, swab); // region
id_string[pos] = '|'; pos++;
pos += extract_text(id_string + pos, id_header + 0x50, 0x30, swab); // overseas name
id_string[pos] = 0;
return id_string;
}
// buffer must be at least 150 byte long
void emu_get_game_name(char *str150)
{
int ret, swab = (PicoAHW & PAHW_MCD) ? 0 : 1;
char *s, *d;
ret = extract_text(str150, id_header + 0x50, 0x30, swab); // overseas name
for (s = d = str150 + 1; s < str150+ret; s++)
{
if (*s == 0) break;
if (*s != ' ' || d[-1] != ' ')
*d++ = *s;
}
*d = 0;
}
static void shutdown_MCD(void)
{
if ((PicoAHW & PAHW_MCD) && Pico_mcd != NULL)
Stop_CD();
PicoAHW &= ~PAHW_MCD;
}
static void system_announce(void)
{
const char *sys_name, *tv_standard;
int fps;
if (PicoAHW & PAHW_SMS) {
sys_name = "Master System";
} else if (PicoAHW & PAHW_PICO) {
sys_name = "Pico";
} else if (PicoAHW & PAHW_MCD) {
sys_name = "Mega CD";
if ((Pico.m.hardware & 0xc0) == 0x80)
sys_name = "Sega CD";
} else if (PicoAHW & PAHW_32X) {
sys_name = "32X";
} else {
sys_name = "MegaDrive";
if ((Pico.m.hardware & 0xc0) == 0x80)
sys_name = "Genesis";
}
tv_standard = Pico.m.pal ? "PAL" : "NTSC";
fps = Pico.m.pal ? 50 : 60;
emu_status_msg("%s %s / %dFPS", tv_standard, sys_name, fps);
}
// note: this function might mangle rom_fname
// XXX: portions of this code should move to pico/
int emu_reload_rom(char *rom_fname)
{
unsigned int rom_size = 0;
char *used_rom_name = rom_fname;
unsigned char *rom_data = NULL;
char ext[5];
pm_file *rom = NULL;
int cd_state = CIT_NOT_CD;
int ret, media_type, cd_region;
int cfg_loaded = 0, bad_rom = 0;
lprintf("emu_ReloadRom(%s)\n", rom_fname);
get_ext(rom_fname, ext);
// check for movie file
if (movie_data) {
free(movie_data);
movie_data = 0;
}
if (!strcmp(ext, ".gmv"))
{
// check for both gmv and rom
int dummy;
FILE *movie_file = fopen(rom_fname, "rb");
if (!movie_file) {
me_update_msg("Failed to open movie.");
return 0;
}
fseek(movie_file, 0, SEEK_END);
movie_size = ftell(movie_file);
fseek(movie_file, 0, SEEK_SET);
if (movie_size < 64+3) {
me_update_msg("Invalid GMV file.");
fclose(movie_file);
return 0;
}
movie_data = malloc(movie_size);
if (movie_data == NULL) {
me_update_msg("low memory.");
fclose(movie_file);
return 0;
}
dummy = fread(movie_data, 1, movie_size, movie_file);
fclose(movie_file);
if (strncmp((char *)movie_data, "Gens Movie TEST", 15) != 0) {
me_update_msg("Invalid GMV file.");
return 0;
}
dummy = try_rfn_cut(rom_fname) || try_rfn_cut(rom_fname);
if (!dummy) {
me_update_msg("Could't find a ROM for movie.");
return 0;
}
get_ext(rom_fname, ext);
lprintf("gmv loaded for %s\n", rom_fname);
}
else if (!strcmp(ext, ".pat"))
{
int dummy;
PicoPatchLoad(rom_fname);
dummy = try_rfn_cut(rom_fname) || try_rfn_cut(rom_fname);
if (!dummy) {
me_update_msg("Could't find a ROM to patch.");
return 0;
}
get_ext(rom_fname, ext);
}
media_type = detect_media(rom_fname);
if (media_type == PM_BAD) {
me_update_msg("Not a ROM/CD img selected.");
return 0;
}
shutdown_MCD();
PicoPatchUnload();
PicoCartUnload();
rom_loaded = 0;
PicoAHW = 0;
if (media_type == PM_CD)
{
// check for MegaCD image
cd_state = emu_cd_check(&cd_region, rom_fname);
if (cd_state >= 0 && cd_state != CIT_NOT_CD)
{
// valid CD image, check for BIOS..
// we need to have config loaded at this point
ret = emu_read_config(1, 0);
if (!ret) emu_read_config(0, 0);
cfg_loaded = 1;
if (PicoRegionOverride) {
cd_region = PicoRegionOverride;
lprintf("override region to %s\n", cd_region != 4 ?
(cd_region == 8 ? "EU" : "JAP") : "USA");
}
if (!find_bios(cd_region, &used_rom_name))
return 0;
get_ext(used_rom_name, ext);
PicoAHW |= PAHW_MCD;
}
else {
me_update_msg("Invalid CD image");
return 0;
}
}
else if (media_type == PM_MARK3) {
lprintf("detected SMS ROM\n");
PicoAHW = PAHW_SMS;
}
rom = pm_open(used_rom_name);
if (rom == NULL) {
me_update_msg("Failed to open ROM");
return 0;
}
menu_romload_prepare(used_rom_name); // also CD load
used_rom_name = NULL; // uses static_buff
ret = PicoCartLoad(rom, &rom_data, &rom_size, (PicoAHW & PAHW_SMS) ? 1 : 0);
pm_close(rom);
if (ret != 0) {
if (ret == 2) me_update_msg("Out of memory");
else if (ret == 3) me_update_msg("Read failed");
else me_update_msg("PicoCartLoad() failed.");
goto fail;
}
// detect wrong files
if (strncmp((char *)rom_data, "Pico", 4) == 0)
bad_rom = 1;
else if (!(PicoAHW & PAHW_SMS)) {
unsigned short *d = (unsigned short *)(rom_data + 4);
if ((((d[0] << 16) | d[1]) & 0xffffff) >= (int)rom_size) {
lprintf("bad reset vector\n");
bad_rom = 1;
}
}
if (bad_rom) {
me_update_msg("Bad ROM detected.");
goto fail;
}
// load config for this ROM (do this before insert to get correct region)
if (!(PicoAHW & PAHW_MCD))
memcpy(id_header, rom_data + 0x100, sizeof(id_header));
if (!cfg_loaded) {
ret = emu_read_config(1, 0);
if (!ret) emu_read_config(0, 0);
}
emu_make_path(static_buff, "carthw.cfg", sizeof(static_buff));
if (PicoCartInsert(rom_data, rom_size, static_buff)) {
me_update_msg("Failed to load ROM.");
goto fail;
}
// insert CD if it was detected
if (cd_state != CIT_NOT_CD) {
ret = Insert_CD(rom_fname, cd_state);
if (ret != 0) {
PicoCartUnload();
rom_data = NULL; // freed by unload
me_update_msg("Insert_CD() failed, invalid CD image?");
goto fail;
}
}
menu_romload_end();
if (PicoPatches) {
PicoPatchPrepare();
PicoPatchApply();
}
// additional movie stuff
if (movie_data)
{
if (movie_data[0x14] == '6')
PicoOpt |= POPT_6BTN_PAD; // 6 button pad
else PicoOpt &= ~POPT_6BTN_PAD;
PicoOpt |= POPT_DIS_VDP_FIFO; // no VDP fifo timing
if (movie_data[0xF] >= 'A') {
if (movie_data[0x16] & 0x80) {
PicoRegionOverride = 8;
} else {
PicoRegionOverride = 4;
}
PicoReset();
// TODO: bits 6 & 5
}
movie_data[0x18+30] = 0;
emu_status_msg("MOVIE: %s", (char *) &movie_data[0x18]);
}
else
{
system_announce();
PicoOpt &= ~POPT_DIS_VDP_FIFO;
}
strncpy(rom_fname_loaded, rom_fname, sizeof(rom_fname_loaded)-1);
rom_fname_loaded[sizeof(rom_fname_loaded)-1] = 0;
rom_loaded = 1;
// load SRAM for this ROM
if (currentConfig.EmuOpt & EOPT_EN_SRAM)
emu_save_load_game(1, 1);
return 1;
fail:
if (rom_data)
free(rom_data);
menu_romload_end();
return 0;
}
int emu_swap_cd(const char *fname)
{
cd_img_type cd_type;
int ret = -1;
cd_type = emu_cd_check(NULL, fname);
if (cd_type != CIT_NOT_CD)
ret = Insert_CD(fname, cd_type);
if (ret != 0) {
me_update_msg("Load failed, invalid CD image?");
return 0;
}
strncpy(rom_fname_loaded, fname, sizeof(rom_fname_loaded)-1);
rom_fname_loaded[sizeof(rom_fname_loaded)-1] = 0;
return 1;
}
static void romfname_ext(char *dst, const char *prefix, const char *ext)
{
char *p;
int prefix_len = 0;
// make save filename
p = rom_fname_loaded + strlen(rom_fname_loaded) - 1;
for (; p >= rom_fname_loaded && *p != PATH_SEP_C; p--); p++;
*dst = 0;
if (prefix) {
int len = plat_get_root_dir(dst, 512);
strcpy(dst + len, prefix);
prefix_len = len + strlen(prefix);
}
#ifdef UIQ3
else p = rom_fname_loaded; // backward compatibility
#endif
strncpy(dst + prefix_len, p, 511-prefix_len);
dst[511-8] = 0;
if (dst[strlen(dst)-4] == '.') dst[strlen(dst)-4] = 0;
if (ext) strcat(dst, ext);
}
// <base dir><end>
void emu_make_path(char *buff, const char *end, int size)
{
int pos, end_len;
end_len = strlen(end);
pos = plat_get_root_dir(buff, size);
strncpy(buff + pos, end, size - pos);
buff[size - 1] = 0;
if (pos + end_len > size - 1)
lprintf("Warning: path truncated: %s\n", buff);
}
static void make_config_cfg(char *cfg_buff_512)
{
emu_make_path(cfg_buff_512, PicoConfigFile, 512-6);
if (config_slot != 0)
{
char *p = strrchr(cfg_buff_512, '.');
if (p == NULL)
p = cfg_buff_512 + strlen(cfg_buff_512);
sprintf(p, ".%i.cfg", config_slot);
}
cfg_buff_512[511] = 0;
}
void emu_prep_defconfig(void)
{
memset(&defaultConfig, 0, sizeof(defaultConfig));
defaultConfig.EmuOpt = 0x9d | EOPT_RAM_TIMINGS|EOPT_CONFIRM_SAVE|EOPT_EN_CD_LEDS;
defaultConfig.s_PicoOpt = POPT_EN_STEREO|POPT_EN_FM|POPT_EN_PSG|POPT_EN_Z80 |
POPT_EN_MCD_PCM|POPT_EN_MCD_CDDA|POPT_EN_SVP_DRC|POPT_ACC_SPRITES |
POPT_EN_32X|POPT_EN_PWM;
defaultConfig.s_PsndRate = 44100;
defaultConfig.s_PicoRegion = 0; // auto
defaultConfig.s_PicoAutoRgnOrder = 0x184; // US, EU, JP
defaultConfig.s_PicoCDBuffers = 0;
defaultConfig.Frameskip = -1; // auto
defaultConfig.volume = 50;
defaultConfig.gamma = 100;
defaultConfig.scaling = 0;
defaultConfig.turbo_rate = 15;
// platform specific overrides
pemu_prep_defconfig();
}
void emu_set_defconfig(void)
{
memcpy(&currentConfig, &defaultConfig, sizeof(currentConfig));
PicoOpt = currentConfig.s_PicoOpt;
PsndRate = currentConfig.s_PsndRate;
PicoRegionOverride = currentConfig.s_PicoRegion;
PicoAutoRgnOrder = currentConfig.s_PicoAutoRgnOrder;
PicoCDBuffers = currentConfig.s_PicoCDBuffers;
}
int emu_read_config(int game, int no_defaults)
{
char cfg[512];
int ret;
if (!no_defaults)
emu_set_defconfig();
if (!game)
{
make_config_cfg(cfg);
ret = config_readsect(cfg, NULL);
}
else
{
char *sect = emu_make_rom_id();
// try new .cfg way
if (config_slot != 0)
sprintf(cfg, "game.%i.cfg", config_slot);
else strcpy(cfg, "game.cfg");
ret = -1;
if (config_havesect(cfg, sect))
{
// read user's config
int vol = currentConfig.volume;
emu_set_defconfig();
ret = config_readsect(cfg, sect);
currentConfig.volume = vol; // make vol global (bah)
}
else
{
// read global config, and apply game_def.cfg on top
make_config_cfg(cfg);
config_readsect(cfg, NULL);
emu_make_path(cfg, "game_def.cfg", sizeof(cfg));
ret = config_readsect(cfg, sect);
}
if (ret == 0)
{
lprintf("loaded cfg from sect \"%s\"\n", sect);
}
}
pemu_validate_config();
// some sanity checks
#ifdef PSP
/* TODO: mv to plat_validate_config() */
if (currentConfig.CPUclock < 10 || currentConfig.CPUclock > 4096) currentConfig.CPUclock = 200;
if (currentConfig.gamma < -4 || currentConfig.gamma > 16) currentConfig.gamma = 0;
if (currentConfig.gamma2 < 0 || currentConfig.gamma2 > 2) currentConfig.gamma2 = 0;
#endif
if (currentConfig.volume < 0 || currentConfig.volume > 99)
currentConfig.volume = 50;
if (ret == 0)
config_slot_current = config_slot;
return (ret == 0);
}
int emu_write_config(int is_game)
{
char cfg[512], *game_sect = NULL;
int ret, write_lrom = 0;
if (!is_game)
{
make_config_cfg(cfg);
write_lrom = 1;
} else {
if (config_slot != 0)
sprintf(cfg, "game.%i.cfg", config_slot);
else strcpy(cfg, "game.cfg");
game_sect = emu_make_rom_id();
lprintf("emu_write_config: sect \"%s\"\n", game_sect);
}
lprintf("emu_write_config: %s ", cfg);
ret = config_writesect(cfg, game_sect);
if (write_lrom) config_writelrom(cfg);
#ifndef NO_SYNC
sync();
#endif
lprintf((ret == 0) ? "(ok)\n" : "(failed)\n");
if (ret == 0) config_slot_current = config_slot;
return ret == 0;
}
/* always using built-in font */
#define mk_text_out(name, type, val, topleft, step_x, step_y) \
void name(int x, int y, const char *text) \
{ \
int i, l, len = strlen(text); \
type *screen = (type *)(topleft) + x * step_x + y * step_y; \
\
for (i = 0; i < len; i++, screen += 8 * step_x) \
{ \
for (l = 0; l < 8; l++) \
{ \
unsigned char fd = fontdata8x8[text[i] * 8 + l];\
type *s = screen + l * step_y; \
if (fd&0x80) s[step_x * 0] = val; \
if (fd&0x40) s[step_x * 1] = val; \
if (fd&0x20) s[step_x * 2] = val; \
if (fd&0x10) s[step_x * 3] = val; \
if (fd&0x08) s[step_x * 4] = val; \
if (fd&0x04) s[step_x * 5] = val; \
if (fd&0x02) s[step_x * 6] = val; \
if (fd&0x01) s[step_x * 7] = val; \
} \
} \
}
mk_text_out(emu_text_out8, unsigned char, 0xf0, g_screen_ptr, 1, g_screen_width)
mk_text_out(emu_text_out16, unsigned short, 0xffff, g_screen_ptr, 1, g_screen_width)
mk_text_out(emu_text_out8_rot, unsigned char, 0xf0,
(char *)g_screen_ptr + (g_screen_width - 1) * g_screen_height, -g_screen_height, 1)
mk_text_out(emu_text_out16_rot, unsigned short, 0xffff,
(short *)g_screen_ptr + (g_screen_width - 1) * g_screen_height, -g_screen_height, 1)
#undef mk_text_out
void update_movie(void)
{
int offs = Pico.m.frame_count*3 + 0x40;
if (offs+3 > movie_size) {
free(movie_data);
movie_data = 0;
emu_status_msg("END OF MOVIE.");
lprintf("END OF MOVIE.\n");
} else {
// MXYZ SACB RLDU
PicoPad[0] = ~movie_data[offs] & 0x8f; // ! SCBA RLDU
if(!(movie_data[offs] & 0x10)) PicoPad[0] |= 0x40; // C
if(!(movie_data[offs] & 0x20)) PicoPad[0] |= 0x10; // A
if(!(movie_data[offs] & 0x40)) PicoPad[0] |= 0x20; // B
PicoPad[1] = ~movie_data[offs+1] & 0x8f; // ! SCBA RLDU
if(!(movie_data[offs+1] & 0x10)) PicoPad[1] |= 0x40; // C
if(!(movie_data[offs+1] & 0x20)) PicoPad[1] |= 0x10; // A
if(!(movie_data[offs+1] & 0x40)) PicoPad[1] |= 0x20; // B
PicoPad[0] |= (~movie_data[offs+2] & 0x0A) << 8; // ! MZYX
if(!(movie_data[offs+2] & 0x01)) PicoPad[0] |= 0x0400; // X
if(!(movie_data[offs+2] & 0x04)) PicoPad[0] |= 0x0100; // Z
PicoPad[1] |= (~movie_data[offs+2] & 0xA0) << 4; // ! MZYX
if(!(movie_data[offs+2] & 0x10)) PicoPad[1] |= 0x0400; // X
if(!(movie_data[offs+2] & 0x40)) PicoPad[1] |= 0x0100; // Z
}
}
static int try_ropen_file(const char *fname)
{
FILE *f;
f = fopen(fname, "rb");
if (f) {
fclose(f);
return 1;
}
return 0;
}
char *emu_get_save_fname(int load, int is_sram, int slot)
{
char *saveFname = static_buff;
char ext[16];
if (is_sram)
{
strcpy(ext, (PicoAHW & PAHW_MCD) ? ".brm" : ".srm");
romfname_ext(saveFname, (PicoAHW & PAHW_MCD) ? "brm"PATH_SEP : "srm"PATH_SEP, ext);
if (!load)
return saveFname;
if (try_ropen_file(saveFname))
return saveFname;
romfname_ext(saveFname, NULL, ext);
if (try_ropen_file(saveFname))
return saveFname;
}
else
{
const char *ext_main = (currentConfig.EmuOpt & EOPT_GZIP_SAVES) ? ".mds.gz" : ".mds";
const char *ext_othr = (currentConfig.EmuOpt & EOPT_GZIP_SAVES) ? ".mds" : ".mds.gz";
ext[0] = 0;
if (slot > 0 && slot < 10)
sprintf(ext, ".%i", slot);
strcat(ext, ext_main);
if (!load) {
romfname_ext(saveFname, "mds" PATH_SEP, ext);
return saveFname;
}
else {
romfname_ext(saveFname, "mds" PATH_SEP, ext);
if (try_ropen_file(saveFname))
return saveFname;
romfname_ext(saveFname, NULL, ext);
if (try_ropen_file(saveFname))
return saveFname;
// try the other ext
ext[0] = 0;
if (slot > 0 && slot < 10)
sprintf(ext, ".%i", slot);
strcat(ext, ext_othr);
romfname_ext(saveFname, "mds"PATH_SEP, ext);
if (try_ropen_file(saveFname))
return saveFname;
}
}
return NULL;
}
int emu_check_save_file(int slot)
{
return emu_get_save_fname(1, 0, slot) ? 1 : 0;
}
int emu_save_load_game(int load, int sram)
{
int ret = 0;
char *saveFname;
// make save filename
saveFname = emu_get_save_fname(load, sram, state_slot);
if (saveFname == NULL) {
if (!sram)
emu_status_msg(load ? "LOAD FAILED (missing file)" : "SAVE FAILED");
return -1;
}
lprintf("saveLoad (%i, %i): %s\n", load, sram, saveFname);
if (sram)
{
FILE *sramFile;
int sram_size;
unsigned char *sram_data;
int truncate = 1;
if (PicoAHW & PAHW_MCD)
{
if (PicoOpt & POPT_EN_MCD_RAMCART) {
sram_size = 0x12000;
sram_data = SRam.data;
if (sram_data)
memcpy32((int *)sram_data, (int *)Pico_mcd->bram, 0x2000/4);
} else {
sram_size = 0x2000;
sram_data = Pico_mcd->bram;
truncate = 0; // the .brm may contain RAM cart data after normal brm
}
} else {
sram_size = SRam.size;
sram_data = SRam.data;
}
if (sram_data == NULL)
return 0; // SRam forcefully disabled for this game
if (load)
{
sramFile = fopen(saveFname, "rb");
if (!sramFile)
return -1;
ret = fread(sram_data, 1, sram_size, sramFile);
ret = ret > 0 ? 0 : -1;
fclose(sramFile);
if ((PicoAHW & PAHW_MCD) && (PicoOpt&POPT_EN_MCD_RAMCART))
memcpy32((int *)Pico_mcd->bram, (int *)sram_data, 0x2000/4);
} else {
// sram save needs some special processing
// see if we have anything to save
for (; sram_size > 0; sram_size--)
if (sram_data[sram_size-1]) break;
if (sram_size) {
sramFile = fopen(saveFname, truncate ? "wb" : "r+b");
if (!sramFile) sramFile = fopen(saveFname, "wb"); // retry
if (!sramFile) return -1;
ret = fwrite(sram_data, 1, sram_size, sramFile);
ret = (ret != sram_size) ? -1 : 0;
fclose(sramFile);
#ifndef NO_SYNC
sync();
#endif
}
}
return ret;
}
else
{
ret = PicoState(saveFname, !load);
if (!ret) {
#ifndef NO_SYNC
if (!load) sync();
#endif
emu_status_msg(load ? "STATE LOADED" : "STATE SAVED");
} else {
emu_status_msg(load ? "LOAD FAILED" : "SAVE FAILED");
ret = -1;
}
return ret;
}
}
void emu_set_fastforward(int set_on)
{
static void *set_PsndOut = NULL;
static int set_Frameskip, set_EmuOpt, is_on = 0;
if (set_on && !is_on) {
set_PsndOut = PsndOut;
set_Frameskip = currentConfig.Frameskip;
set_EmuOpt = currentConfig.EmuOpt;
PsndOut = NULL;
currentConfig.Frameskip = 8;
currentConfig.EmuOpt &= ~4;
currentConfig.EmuOpt |= 0x40000;
is_on = 1;
emu_status_msg("FAST FORWARD");
}
else if (!set_on && is_on) {
PsndOut = set_PsndOut;
currentConfig.Frameskip = set_Frameskip;
currentConfig.EmuOpt = set_EmuOpt;
PsndRerate(1);
is_on = 0;
}
}
static void emu_tray_open(void)
{
engineState = PGS_TrayMenu;
}
static void emu_tray_close(void)
{
emu_status_msg("CD tray closed.");
}
void emu_32x_startup(void)
{
plat_video_toggle_renderer(0, 1, 0);
system_announce();
}
void emu_reset_game(void)
{
PicoReset();
reset_timing = 1;
}
void run_events_pico(unsigned int events)
{
int lim_x;
if (events & PEV_PICO_SWINP) {
pico_inp_mode++;
if (pico_inp_mode > 2)
pico_inp_mode = 0;
switch (pico_inp_mode) {
case 2: emu_status_msg("Input: Pen on Pad"); break;
case 1: emu_status_msg("Input: Pen on Storyware"); break;
case 0: emu_status_msg("Input: Joystick");
PicoPicohw.pen_pos[0] = PicoPicohw.pen_pos[1] = 0x8000;
break;
}
}
if (events & PEV_PICO_PPREV) {
PicoPicohw.page--;
if (PicoPicohw.page < 0)
PicoPicohw.page = 0;
emu_status_msg("Page %i", PicoPicohw.page);
}
if (events & PEV_PICO_PNEXT) {
PicoPicohw.page++;
if (PicoPicohw.page > 6)
PicoPicohw.page = 6;
emu_status_msg("Page %i", PicoPicohw.page);
}
if (pico_inp_mode == 0)
return;
/* handle other input modes */
if (PicoPad[0] & 1) pico_pen_y--;
if (PicoPad[0] & 2) pico_pen_y++;
if (PicoPad[0] & 4) pico_pen_x--;
if (PicoPad[0] & 8) pico_pen_x++;
PicoPad[0] &= ~0x0f; // release UDLR
lim_x = (Pico.video.reg[12]&1) ? 319 : 255;
if (pico_pen_y < 8)
pico_pen_y = 8;
if (pico_pen_y > 224 - PICO_PEN_ADJUST_Y)
pico_pen_y = 224 - PICO_PEN_ADJUST_Y;
if (pico_pen_x < 0)
pico_pen_x = 0;
if (pico_pen_x > lim_x - PICO_PEN_ADJUST_X)
pico_pen_x = lim_x - PICO_PEN_ADJUST_X;
PicoPicohw.pen_pos[0] = pico_pen_x;
if (!(Pico.video.reg[12] & 1))
PicoPicohw.pen_pos[0] += pico_pen_x / 4;
PicoPicohw.pen_pos[0] += 0x3c;
PicoPicohw.pen_pos[1] = pico_inp_mode == 1 ? (0x2f8 + pico_pen_y) : (0x1fc + pico_pen_y);
}
static void do_turbo(int *pad, int acts)
{
static int turbo_pad = 0;
static unsigned char turbo_cnt[3] = { 0, 0, 0 };
int inc = currentConfig.turbo_rate * 2;
if (acts & 0x1000) {
turbo_cnt[0] += inc;
if (turbo_cnt[0] >= 60)
turbo_pad ^= 0x10, turbo_cnt[0] = 0;
}
if (acts & 0x2000) {
turbo_cnt[1] += inc;
if (turbo_cnt[1] >= 60)
turbo_pad ^= 0x20, turbo_cnt[1] = 0;
}
if (acts & 0x4000) {
turbo_cnt[2] += inc;
if (turbo_cnt[2] >= 60)
turbo_pad ^= 0x40, turbo_cnt[2] = 0;
}
*pad |= turbo_pad & (acts >> 8);
}
static void run_events_ui(unsigned int which)
{
if (which & (PEV_STATE_LOAD|PEV_STATE_SAVE))
{
int do_it = 1;
if ( emu_check_save_file(state_slot) &&
(((which & PEV_STATE_LOAD) && (currentConfig.EmuOpt & EOPT_CONFIRM_LOAD)) ||
((which & PEV_STATE_SAVE) && (currentConfig.EmuOpt & EOPT_CONFIRM_SAVE))) )
{
const char *nm;
char tmp[64];
int keys, len;
strcpy(tmp, (which & PEV_STATE_LOAD) ? "LOAD STATE?" : "OVERWRITE SAVE?");
len = strlen(tmp);
nm = in_get_key_name(-1, -PBTN_MA3);
snprintf(tmp + len, sizeof(tmp) - len, "(%s=yes, ", nm);
len = strlen(tmp);
nm = in_get_key_name(-1, -PBTN_MBACK);
snprintf(tmp + len, sizeof(tmp) - len, "%s=no)", nm);
plat_status_msg_busy_first(tmp);
in_set_blocking(1);
while (in_menu_wait_any(50) & (PBTN_MA3|PBTN_MBACK))
;
while ( !((keys = in_menu_wait_any(50)) & (PBTN_MA3|PBTN_MBACK)) )
;
if (keys & PBTN_MBACK)
do_it = 0;
while (in_menu_wait_any(50) & (PBTN_MA3|PBTN_MBACK))
;
in_set_blocking(0);
}
if (do_it) {
plat_status_msg_busy_first((which & PEV_STATE_LOAD) ? "LOADING STATE" : "SAVING STATE");
PicoStateProgressCB = plat_status_msg_busy_next;
emu_save_load_game((which & PEV_STATE_LOAD) ? 1 : 0, 0);
PicoStateProgressCB = NULL;
}
}
if ((which & PEV_SWITCH_RND) && !(PicoAHW & PAHW_32X))
{
plat_video_toggle_renderer(1, 0, 0);
}
if (which & (PEV_SSLOT_PREV|PEV_SSLOT_NEXT))
{
if (which & PEV_SSLOT_PREV) {
state_slot -= 1;
if (state_slot < 0)
state_slot = 9;
} else {
state_slot += 1;
if (state_slot > 9)
state_slot = 0;
}
emu_status_msg("SAVE SLOT %i [%s]", state_slot,
emu_check_save_file(state_slot) ? "USED" : "FREE");
}
if (which & PEV_MENU)
engineState = PGS_Menu;
}
void emu_update_input(void)
{
static int prev_events = 0;
int actions[IN_BINDTYPE_COUNT] = { 0, };
int pl_actions[2];
int events;
in_update(actions);
pl_actions[0] = actions[IN_BINDTYPE_PLAYER12];
pl_actions[1] = actions[IN_BINDTYPE_PLAYER12] >> 16;
PicoPad[0] = pl_actions[0] & 0xfff;
PicoPad[1] = pl_actions[1] & 0xfff;
if (pl_actions[0] & 0x7000)
do_turbo(&PicoPad[0], pl_actions[0]);
if (pl_actions[1] & 0x7000)
do_turbo(&PicoPad[1], pl_actions[1]);
events = actions[IN_BINDTYPE_EMU] & PEV_MASK;
// volume is treated in special way and triggered every frame
if (events & (PEV_VOL_DOWN|PEV_VOL_UP))
plat_update_volume(1, events & PEV_VOL_UP);
if ((events ^ prev_events) & PEV_FF) {
emu_set_fastforward(events & PEV_FF);
plat_update_volume(0, 0);
reset_timing = 1;
}
events &= ~prev_events;
if (PicoAHW == PAHW_PICO)
run_events_pico(events);
if (events)
run_events_ui(events);
if (movie_data)
update_movie();
prev_events = actions[IN_BINDTYPE_EMU] & PEV_MASK;
}
static void mkdir_path(char *path_with_reserve, int pos, const char *name)
{
strcpy(path_with_reserve + pos, name);
if (plat_is_dir(path_with_reserve))
return;
if (mkdir(path_with_reserve, 0777) < 0)
lprintf("failed to create: %s\n", path_with_reserve);
}
void emu_init(void)
{
char path[512];
int pos;
#if 0
// FIXME: handle through menu, etc
FILE *f;
f = fopen("32X_M_BIOS.BIN", "rb");
p32x_bios_m = malloc(2048);
fread(p32x_bios_m, 1, 2048, f);
fclose(f);
f = fopen("32X_S_BIOS.BIN", "rb");
p32x_bios_s = malloc(1024);
fread(p32x_bios_s, 1, 1024, f);
fclose(f);
#endif
/* make dirs for saves */
pos = plat_get_root_dir(path, sizeof(path) - 4);
mkdir_path(path, pos, "mds");
mkdir_path(path, pos, "srm");
mkdir_path(path, pos, "brm");
pprof_init();
make_config_cfg(path);
config_readlrom(path);
PicoInit();
PicoMessage = plat_status_msg_busy_next;
PicoMCDopenTray = emu_tray_open;
PicoMCDcloseTray = emu_tray_close;
}
void emu_finish(void)
{
// save SRAM
if ((currentConfig.EmuOpt & EOPT_EN_SRAM) && SRam.changed) {
emu_save_load_game(0, 1);
SRam.changed = 0;
}
if (!(currentConfig.EmuOpt & EOPT_NO_AUTOSVCFG)) {
char cfg[512];
make_config_cfg(cfg);
config_writelrom(cfg);
#ifndef NO_SYNC
sync();
#endif
}
pprof_finish();
PicoExit();
}
static void skip_frame(int do_audio)
{
PicoSkipFrame = do_audio ? 1 : 2;
PicoFrame();
PicoSkipFrame = 0;
}
/* our tick here is 1 us right now */
#define ms_to_ticks(x) (unsigned int)(x * 1000)
#define get_ticks() plat_get_ticks_us()
void emu_loop(void)
{
int pframes_done; /* "period" frames, used for sync */
int frames_done, frames_shown; /* actual frames for fps counter */
int target_fps, target_frametime;
unsigned int timestamp_base = 0, timestamp_fps;
char *notice_msg = NULL;
char fpsbuff[24];
int i;
fpsbuff[0] = 0;
/* make sure we are in correct mode */
Pico.m.dirtyPal = 1;
rendstatus_old = -1;
/* number of ticks per frame */
if (Pico.m.pal) {
target_fps = 50;
target_frametime = ms_to_ticks(1000) / 50;
} else {
target_fps = 60;
target_frametime = ms_to_ticks(1000) / 60 + 1;
}
// prepare CD buffer
if (PicoAHW & PAHW_MCD)
PicoCDBufferInit();
PicoLoopPrepare();
pemu_loop_prep();
timestamp_fps = get_ticks();
reset_timing = 1;
frames_done = frames_shown = pframes_done = 0;
plat_video_wait_vsync();
/* loop with resync every 1 sec. */
while (engineState == PGS_Running)
{
unsigned int timestamp;
int diff, diff_lim;
pprof_start(main);
timestamp = get_ticks();
if (reset_timing) {
reset_timing = 0;
timestamp_base = timestamp;
pframes_done = 0;
}
// show notice_msg message?
if (notice_msg_time != 0)
{
static int noticeMsgSum;
if (timestamp - ms_to_ticks(notice_msg_time) > ms_to_ticks(STATUS_MSG_TIMEOUT)) {
notice_msg_time = 0;
plat_status_msg_clear();
notice_msg = NULL;
} else {
int sum = noticeMsg[0] + noticeMsg[1] + noticeMsg[2];
if (sum != noticeMsgSum) {
plat_status_msg_clear();
noticeMsgSum = sum;
}
notice_msg = noticeMsg;
}
}
// second changed?
if (timestamp - timestamp_fps >= ms_to_ticks(1000))
{
#ifdef BENCHMARK
static int bench = 0, bench_fps = 0, bench_fps_s = 0, bfp = 0, bf[4];
if (++bench == 10) {
bench = 0;
bench_fps_s = bench_fps;
bf[bfp++ & 3] = bench_fps;
bench_fps = 0;
}
bench_fps += frames_shown;
sprintf(fpsbuff, "%02i/%02i/%02i", frames_shown, bench_fps_s, (bf[0]+bf[1]+bf[2]+bf[3])>>2);
#else
if (currentConfig.EmuOpt & EOPT_SHOW_FPS) {
sprintf(fpsbuff, "%02i/%02i", frames_shown, frames_done);
if (fpsbuff[5] == 0) { fpsbuff[5] = fpsbuff[6] = ' '; fpsbuff[7] = 0; }
}
#endif
frames_shown = frames_done = 0;
timestamp_fps += ms_to_ticks(1000);
}
#ifdef PFRAMES
sprintf(fpsbuff, "%i", Pico.m.frame_count);
#endif
if (timestamp - timestamp_base >= ms_to_ticks(1000))
{
if ((currentConfig.EmuOpt & EOPT_NO_FRMLIMIT) && currentConfig.Frameskip >= 0)
pframes_done = 0;
else {
pframes_done -= target_fps;
/* don't allow it to drift during heavy slowdowns */
if (pframes_done < -5) {
reset_timing = 1;
continue;
}
if (pframes_done < -2)
pframes_done = -2;
}
timestamp_base += ms_to_ticks(1000);
}
diff = timestamp - timestamp_base;
diff_lim = (pframes_done + 1) * target_frametime;
if (currentConfig.Frameskip >= 0) // frameskip enabled
{
for (i = 0; i < currentConfig.Frameskip; i++) {
emu_update_input();
skip_frame(1);
pframes_done++; frames_done++;
diff_lim += target_frametime;
if (!(currentConfig.EmuOpt & (EOPT_NO_FRMLIMIT|EOPT_EXT_FRMLIMIT))) {
timestamp = get_ticks();
diff = timestamp - timestamp_base;
if (!reset_timing && diff < diff_lim) // we are too fast
plat_wait_till_us(timestamp_base + diff_lim);
}
}
}
else if (diff > diff_lim)
{
/* no time left for this frame - skip */
if (diff - diff_lim >= ms_to_ticks(200)) {
/* if too much behind, reset instead */
reset_timing = 1;
continue;
}
emu_update_input();
skip_frame(diff < diff_lim + target_frametime * 2);
pframes_done++; frames_done++;
continue;
}
emu_update_input();
PicoFrame();
pemu_finalize_frame(fpsbuff, notice_msg);
// plat_video_flip();
/* frame limiter */
if (!reset_timing && !(currentConfig.EmuOpt & (EOPT_NO_FRMLIMIT|EOPT_EXT_FRMLIMIT)))
{
timestamp = get_ticks();
diff = timestamp - timestamp_base;
// sleep or vsync if we are still too fast
if (diff < diff_lim)
{
// we are too fast
plat_wait_till_us(timestamp_base + diff_lim - target_frametime / 4);
if (currentConfig.EmuOpt & EOPT_VSYNC)
plat_video_wait_vsync();
}
}
// XXX: for some plats it might be better to flip before vsync
// (due to shadow registers in display hw)
plat_video_flip();
pframes_done++; frames_done++; frames_shown++;
pprof_end(main);
}
emu_set_fastforward(0);
// save SRAM
if ((currentConfig.EmuOpt & EOPT_EN_SRAM) && SRam.changed) {
plat_status_msg_busy_first("Writing SRAM/BRAM...");
emu_save_load_game(0, 1);
SRam.changed = 0;
}
pemu_loop_end();
// pemu_loop_end() might want to do 1 frame for bg image,
// so free CD buffer here
if (PicoAHW & PAHW_MCD)
PicoCDBufferFree();
}
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