frontend/main.c

   1 /*
   2  * (C) notaz, 2010
   3  *
   4  * This work is licensed under the terms of the GNU GPLv2 or later.
   5  * See the COPYING file in the top-level directory.
   6  */
   7
   8 #include <stdio.h>
   9 #include <string.h>
  10 #include <stdarg.h>
  11 #include <dlfcn.h>
  12 #include <sys/stat.h>
  13 #include <sys/types.h>
  14 #include <unistd.h>
  15
  16 #include "plugin.h"
  17 #include "pcnt.h"
  18 #include "../gui/Linux.h"
  19 #include "../libpcsxcore/misc.h"
  20 #include "common/menu.h"
  21 #include "common/plat.h"
  22 #include "common/input.h"
  23
  24 int ready_to_go;
  25 int UseGui;
  26 static char *(*real_getenv)(const char *name);
  27
  28 static void make_path(char *buf, size_t size, const char *dir, const char *fname)
  29 {
  30         if (fname)
  31                 snprintf(buf, size, ".%s%s", dir, fname);
  32         else
  33                 snprintf(buf, size, ".%s", dir);
  34 }
  35 #define MAKE_PATH(buf, dir, fname) \
  36         make_path(buf, sizeof(buf), dir, fname)
  37
  38 static void create_profile_dir(const char *directory) {
  39         char path[MAXPATHLEN];
  40
  41         MAKE_PATH(path, directory, NULL);
  42         mkdir(path, S_IRWXU | S_IRWXG);
  43 }
  44
  45 static void CheckSubDir() {
  46         // make sure that ~/.pcsx exists
  47         create_profile_dir(PCSX_DOT_DIR);
  48
  49         create_profile_dir(BIOS_DIR);
  50         create_profile_dir(MEMCARD_DIR);
  51         create_profile_dir(STATES_DIR);
  52         create_profile_dir(PLUGINS_DIR);
  53         create_profile_dir(PLUGINS_CFG_DIR);
  54         create_profile_dir(CHEATS_DIR);
  55         create_profile_dir(PATCHES_DIR);
  56 }
  57
  58 static void CreateMemcard(char *filename, char *conf_mcd) {
  59         struct stat buf;
  60
  61         make_path(conf_mcd, MAXPATHLEN, MEMCARD_DIR, filename);
  62
  63         /* Only create a memory card if an existing one does not exist */
  64         if (stat(conf_mcd, &buf) == -1) {
  65                 SysPrintf(_("Creating memory card: %s\n"), conf_mcd);
  66                 CreateMcd(conf_mcd);
  67         }
  68 }
  69
  70 int main(int argc, char *argv[])
  71 {
  72         char file[MAXPATHLEN] = "";
  73         char path[MAXPATHLEN];
  74         int runcd = 0;
  75         int loadst = 0;
  76         void *tmp;
  77         int i;
  78
  79         tmp = dlopen("/lib/libdl.so.2", RTLD_LAZY);
  80         if (tmp == NULL)
  81                 tmp = dlopen("/lib32/libdl.so.2", RTLD_LAZY);
  82         if (tmp != NULL)
  83                 real_getenv = dlsym(tmp, "getenv");
  84         if (real_getenv == NULL) {
  85                 fprintf(stderr, "%s\n", dlerror());
  86                 return 1;
  87         }
  88         dlclose(tmp);
  89
  90         // what is the name of the config file?
  91         // it may be redefined by -cfg on the command line
  92         strcpy(cfgfile_basename, "pcsx.cfg");
  93
  94         emuLog = stdout;
  95         SetIsoFile(NULL);
  96
  97         // read command line options
  98         for (i = 1; i < argc; i++) {
  99                      if (!strcmp(argv[i], "-psxout")) Config.PsxOut = 1;
 100                 else if (!strcmp(argv[i], "-load")) loadst = atol(argv[++i]);
 101                 else if (!strcmp(argv[i], "-cfg")) {
 102                         if (i+1 >= argc) break;
 103                         strncpy(cfgfile_basename, argv[++i], MAXPATHLEN-100);   /* TODO buffer overruns */
 104                         printf("Using config file %s.\n", cfgfile_basename);
 105                 }
 106                 else if (!strcmp(argv[i], "-cdfile")) {
 107                         char isofilename[MAXPATHLEN];
 108
 109                         if (i+1 >= argc) break;
 110                         strncpy(isofilename, argv[++i], MAXPATHLEN);
 111                         if (isofilename[0] != '/') {
 112                                 getcwd(path, MAXPATHLEN);
 113                                 if (strlen(path) + strlen(isofilename) + 1 < MAXPATHLEN) {
 114                                         strcat(path, "/");
 115                                         strcat(path, isofilename);
 116                                         strcpy(isofilename, path);
 117                                 } else
 118                                         isofilename[0] = 0;
 119                         }
 120
 121                         SetIsoFile(isofilename);
 122                         runcd = 1;
 123                 }
 124                 else if (!strcmp(argv[i], "-h") ||
 125                          !strcmp(argv[i], "-help") ||
 126                          !strcmp(argv[i], "--help")) {
 127                          printf(PACKAGE_NAME " " PACKAGE_VERSION "\n");
 128                          printf("%s\n", _(
 129                                                         " pcsx [options] [file]\n"
 130                                                         "\toptions:\n"
 131                                                         "\t-cdfile FILE\tRuns a CD image file\n"
 132                                                         "\t-nogui\t\tDon't open the GTK GUI\n"
 133                                                         "\t-cfg FILE\tLoads desired configuration file (default: ~/.pcsx/pcsx.cfg)\n"
 134                                                         "\t-psxout\t\tEnable PSX output\n"
 135                                                         "\t-load STATENUM\tLoads savestate STATENUM (1-5)\n"
 136                                                         "\t-h -help\tDisplay this message\n"
 137                                                         "\tfile\t\tLoads file\n"));
 138                          return 0;
 139                 } else {
 140                         strncpy(file, argv[i], MAXPATHLEN);
 141                         if (file[0] != '/') {
 142                                 getcwd(path, MAXPATHLEN);
 143                                 if (strlen(path) + strlen(file) + 1 < MAXPATHLEN) {
 144                                         strcat(path, "/");
 145                                         strcat(path, file);
 146                                         strcpy(file, path);
 147                                 } else
 148                                         file[0] = 0;
 149                         }
 150                 }
 151         }
 152
 153         memset(&Config, 0, sizeof(PcsxConfig));
 154         strcpy(Config.Net, "Disabled");
 155
 156         CheckSubDir();
 157 //      ScanAllPlugins();
 158
 159         strcpy(Config.Bios, "HLE");
 160         strcpy(Config.BiosDir, "./");
 161
 162         strcpy(Config.PluginsDir, "plugins");
 163         strcpy(Config.Gpu, "builtin_gpu");
 164         strcpy(Config.Spu, "builtin_spu");
 165         strcpy(Config.Cdr, "builtin_cdr");
 166         strcpy(Config.Pad1, "builtin_pad");
 167         strcpy(Config.Pad2, "builtin_pad");
 168
 169         // try to load config
 170         // if the config file doesn't exist
 171         if (LoadConfig() == -1) {
 172                 // Uh oh, no config file found, use some defaults
 173                 Config.PsxAuto = 1;
 174
 175                 // create & load default memcards if they don't exist
 176                 CreateMemcard("card1.mcd", Config.Mcd1);
 177                 CreateMemcard("card2.mcd", Config.Mcd2);
 178
 179                 LoadMcds(Config.Mcd1, Config.Mcd2);
 180
 181                 SaveConfig();
 182         }
 183
 184         snprintf(Config.PatchesDir, sizeof(Config.PatchesDir), "." PATCHES_DIR);
 185 /*
 186         // switch to plugin dotdir
 187         // this lets plugins work without modification!
 188         gchar *plugin_default_dir = g_build_filename(getenv("HOME"), PLUGINS_DIR, NULL);
 189         chdir(plugin_default_dir);
 190         g_free(plugin_default_dir);
 191 */
 192         if (SysInit() == -1)
 193                 return 1;
 194
 195         // frontend stuff
 196         in_init();
 197         in_probe();
 198         plat_init();
 199         menu_init();
 200
 201         if (LoadPlugins() == -1) {
 202                 SysMessage("Failed loading plugins!");
 203                 return 1;
 204         }
 205         pcnt_hook_plugins();
 206
 207         if (OpenPlugins() == -1) {
 208                 return 1;
 209         }
 210
 211         SysReset();
 212         CheckCdrom();
 213
 214         if (file[0] != '\0') {
 215                 if (Load(file) != -1)
 216                         ready_to_go = 1;
 217         } else {
 218                 if (runcd) {
 219                         if (LoadCdrom() == -1) {
 220                                 ClosePlugins();
 221                                 printf(_("Could not load CD-ROM!\n"));
 222                                 return -1;
 223                         }
 224                         ready_to_go = 1;
 225                 }
 226         }
 227
 228         // If a state has been specified, then load that
 229         if (loadst) {
 230                 StatesC = loadst - 1;
 231                 char *state_filename = get_state_filename(StatesC);
 232                 int ret = LoadState(state_filename);
 233                 printf("%s state %s\n", ret ? "failed to load" : "loaded", state_filename);
 234                 free(state_filename);
 235         }
 236
 237         if (!ready_to_go)
 238                 menu_loop();
 239
 240         while (1)
 241         {
 242                 psxCpu->Execute();
 243                 menu_loop();
 244         }
 245
 246         return 0;
 247 }
 248
 249 int SysInit() {
 250         if (EmuInit() == -1) {
 251                 printf("PSX emulator couldn't be initialized.\n");
 252                 return -1;
 253         }
 254
 255         LoadMcds(Config.Mcd1, Config.Mcd2);     /* TODO Do we need to have this here, or in the calling main() function?? */
 256
 257         if (Config.Debug) {
 258                 StartDebugger();
 259         }
 260
 261         return 0;
 262 }
 263
 264 void SysRunGui() {
 265         printf("SysRunGui\n");
 266 }
 267
 268 void StartGui() {
 269         printf("StartGui\n");
 270 }
 271
 272 void SysReset() {
 273         EmuReset();
 274 }
 275
 276 void SysClose() {
 277         EmuShutdown();
 278         ReleasePlugins();
 279
 280         StopDebugger();
 281
 282         if (emuLog != NULL) fclose(emuLog);
 283 }
 284
 285 void SysUpdate() {
 286         PADhandleKey(PAD1_keypressed());
 287         PADhandleKey(PAD2_keypressed());
 288 }
 289
 290 void UpdateMenuSlots() {
 291 }
 292
 293 void OnFile_Exit() {
 294         printf("OnFile_Exit\n");
 295         exit(0);
 296 }
 297
 298 void state_save(gchar *state_filename) {
 299         char Text[MAXPATHLEN + 20];
 300
 301         GPU_updateLace();
 302
 303         if (SaveState(state_filename) == 0)
 304                 sprintf(Text, _("Saved state %s."), state_filename);
 305         else
 306                 sprintf(Text, _("Error saving state %s!"), state_filename);
 307
 308         GPU_displayText(Text);
 309 }
 310
 311 void state_load(gchar *state_filename) {
 312         int ret;
 313         char Text[MAXPATHLEN + 20];
 314         FILE *fp;
 315
 316         // check if the state file actually exists
 317         fp = fopen(state_filename, "rb");
 318         if (fp == NULL) {
 319                 // file does not exist
 320                 return;
 321         }
 322
 323         fclose(fp);
 324
 325         ret = CheckState(state_filename);
 326
 327         if (ret == 0) {
 328                 SysReset();
 329                 ret = LoadState(state_filename);
 330         }
 331
 332         if (ret == 0) {
 333                 // Check the CD-ROM is valid
 334                 if (CheckCdrom() == -1) {
 335                         ClosePlugins();
 336                         SysRunGui();
 337                         return;
 338                 }
 339
 340                 sprintf(Text, _("Loaded state %s."), state_filename);
 341         } else {
 342                 sprintf(Text, _("Error loading state %s!"), state_filename);
 343         }
 344         GPU_displayText(Text);
 345 }
 346
 347 char *get_state_filename(int i) {
 348         char SStateFile[256];
 349         char trimlabel[33];
 350         int j;
 351
 352         strncpy(trimlabel, CdromLabel, 32);
 353         trimlabel[32] = 0;
 354         for (j = 31; j >= 0; j--)
 355                 if (trimlabel[j] == ' ')
 356                         trimlabel[j] = 0;
 357                 else
 358                         continue;
 359
 360         snprintf(SStateFile, sizeof(SStateFile), "." STATES_DIR "%.32s-%.9s.%3.3d",
 361                 trimlabel, CdromId, i);
 362
 363         return strdup(SStateFile);
 364 }
 365
 366 void SysPrintf(const char *fmt, ...) {
 367         va_list list;
 368         char msg[512];
 369
 370         va_start(list, fmt);
 371         vsprintf(msg, fmt, list);
 372         va_end(list);
 373
 374         fprintf(emuLog, "%s", msg);
 375 }
 376
 377 void SysMessage(const char *fmt, ...) {
 378         va_list list;
 379         char msg[512];
 380
 381         va_start(list, fmt);
 382         vsprintf(msg, fmt, list);
 383         va_end(list);
 384
 385         if (msg[strlen(msg) - 1] == '\n')
 386                 msg[strlen(msg) - 1] = 0;
 387
 388         fprintf(stderr, "%s\n", msg);
 389 }
 390
 391 #if 1
 392 /* this is to avoid having to hack every plugin to stop using $HOME */
 393 char *getenv(const char *name)
 394 {
 395         static char ret[8] = ".";
 396
 397         if (name && strcmp(name, "HOME") == 0 &&
 398                         ((int)name >> 28) == 0) // HACK: let libs find home
 399                 return ret;
 400
 401         return real_getenv(name);
 402 }
 403 #endif
 404
 405 /* we hook statically linked plugins here */
 406 static const char *builtin_plugins[] = {
 407         "builtin_gpu", "builtin_spu", "builtin_cdr", "builtin_pad"
 408 };
 409
 410 static const int builtin_plugin_ids[] = {
 411         PLUGIN_GPU, PLUGIN_SPU, PLUGIN_CDR, PLUGIN_PAD,
 412 };
 413
 414 void *SysLoadLibrary(const char *lib) {
 415         const char *tmp = strrchr(lib, '/');
 416         int i;
 417
 418         printf("dlopen %s\n", lib);
 419         if (tmp != NULL) {
 420                 tmp++;
 421                 for (i = 0; i < ARRAY_SIZE(builtin_plugins); i++)
 422                         if (strcmp(tmp, builtin_plugins[i]) == 0)
 423                                 return (void *)(long)(PLUGIN_DL_BASE + builtin_plugin_ids[i]);
 424         }
 425
 426         return dlopen(lib, RTLD_NOW);
 427 }
 428
 429 void *SysLoadSym(void *lib, const char *sym) {
 430         unsigned int plugid = (unsigned int)(long)lib;
 431
 432         if (PLUGIN_DL_BASE <= plugid && plugid < PLUGIN_DL_BASE + ARRAY_SIZE(builtin_plugins))
 433                 return plugin_link(plugid - PLUGIN_DL_BASE, sym);
 434
 435         return dlsym(lib, sym);
 436 }
 437
 438 const char *SysLibError() {
 439         return dlerror();
 440 }
 441
 442 void SysCloseLibrary(void *lib) {
 443         unsigned int plugid = (unsigned int)(long)lib;
 444
 445         if (PLUGIN_DL_BASE <= plugid && plugid < PLUGIN_DL_BASE + ARRAY_SIZE(builtin_plugins))
 446                 return;
 447
 448         dlclose(lib);
 449 }
 450
 451