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 "menu.h"
  19 #include "../gui/Linux.h"
  20 #include "../libpcsxcore/misc.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_prepare_emu();
 239         else
 240                 menu_loop();
 241
 242         while (1)
 243         {
 244                 psxCpu->Execute();
 245                 menu_loop();
 246         }
 247
 248         return 0;
 249 }
 250
 251 int SysInit() {
 252         if (EmuInit() == -1) {
 253                 printf("PSX emulator couldn't be initialized.\n");
 254                 return -1;
 255         }
 256
 257         LoadMcds(Config.Mcd1, Config.Mcd2);     /* TODO Do we need to have this here, or in the calling main() function?? */
 258
 259         if (Config.Debug) {
 260                 StartDebugger();
 261         }
 262
 263         return 0;
 264 }
 265
 266 void SysRunGui() {
 267         printf("SysRunGui\n");
 268 }
 269
 270 void StartGui() {
 271         printf("StartGui\n");
 272 }
 273
 274 void SysReset() {
 275         EmuReset();
 276 }
 277
 278 void SysClose() {
 279         EmuShutdown();
 280         ReleasePlugins();
 281
 282         StopDebugger();
 283
 284         if (emuLog != NULL) fclose(emuLog);
 285 }
 286
 287 void SysUpdate() {
 288         PADhandleKey(PAD1_keypressed());
 289         PADhandleKey(PAD2_keypressed());
 290 }
 291
 292 void UpdateMenuSlots() {
 293 }
 294
 295 void OnFile_Exit() {
 296         printf("OnFile_Exit\n");
 297         exit(0);
 298 }
 299
 300 void state_save(gchar *state_filename) {
 301         char Text[MAXPATHLEN + 20];
 302
 303         GPU_updateLace();
 304
 305         if (SaveState(state_filename) == 0)
 306                 sprintf(Text, _("Saved state %s."), state_filename);
 307         else
 308                 sprintf(Text, _("Error saving state %s!"), state_filename);
 309
 310         GPU_displayText(Text);
 311 }
 312
 313 void state_load(gchar *state_filename) {
 314         int ret;
 315         char Text[MAXPATHLEN + 20];
 316         FILE *fp;
 317
 318         // check if the state file actually exists
 319         fp = fopen(state_filename, "rb");
 320         if (fp == NULL) {
 321                 // file does not exist
 322                 return;
 323         }
 324
 325         fclose(fp);
 326
 327         ret = CheckState(state_filename);
 328
 329         if (ret == 0) {
 330                 SysReset();
 331                 ret = LoadState(state_filename);
 332         }
 333
 334         if (ret == 0) {
 335                 // Check the CD-ROM is valid
 336                 if (CheckCdrom() == -1) {
 337                         ClosePlugins();
 338                         SysRunGui();
 339                         return;
 340                 }
 341
 342                 sprintf(Text, _("Loaded state %s."), state_filename);
 343         } else {
 344                 sprintf(Text, _("Error loading state %s!"), state_filename);
 345         }
 346         GPU_displayText(Text);
 347 }
 348
 349 char *get_state_filename(int i) {
 350         char SStateFile[256];
 351         char trimlabel[33];
 352         int j;
 353
 354         strncpy(trimlabel, CdromLabel, 32);
 355         trimlabel[32] = 0;
 356         for (j = 31; j >= 0; j--)
 357                 if (trimlabel[j] == ' ')
 358                         trimlabel[j] = 0;
 359                 else
 360                         continue;
 361
 362         snprintf(SStateFile, sizeof(SStateFile), "." STATES_DIR "%.32s-%.9s.%3.3d",
 363                 trimlabel, CdromId, i);
 364
 365         return strdup(SStateFile);
 366 }
 367
 368 void SysPrintf(const char *fmt, ...) {
 369         va_list list;
 370         char msg[512];
 371
 372         va_start(list, fmt);
 373         vsprintf(msg, fmt, list);
 374         va_end(list);
 375
 376         fprintf(emuLog, "%s", msg);
 377 }
 378
 379 void SysMessage(const char *fmt, ...) {
 380         va_list list;
 381         char msg[512];
 382
 383         va_start(list, fmt);
 384         vsprintf(msg, fmt, list);
 385         va_end(list);
 386
 387         if (msg[strlen(msg) - 1] == '\n')
 388                 msg[strlen(msg) - 1] = 0;
 389
 390         fprintf(stderr, "%s\n", msg);
 391 }
 392
 393 #if 1
 394 /* this is to avoid having to hack every plugin to stop using $HOME */
 395 char *getenv(const char *name)
 396 {
 397         static char ret[8] = ".";
 398
 399         if (name && strcmp(name, "HOME") == 0 &&
 400                         ((int)name >> 28) == 0) // HACK: let libs find home
 401                 return ret;
 402
 403         return real_getenv(name);
 404 }
 405 #endif
 406
 407 /* we hook statically linked plugins here */
 408 static const char *builtin_plugins[] = {
 409         "builtin_gpu", "builtin_spu", "builtin_cdr", "builtin_pad"
 410 };
 411
 412 static const int builtin_plugin_ids[] = {
 413         PLUGIN_GPU, PLUGIN_SPU, PLUGIN_CDR, PLUGIN_PAD,
 414 };
 415
 416 void *SysLoadLibrary(const char *lib) {
 417         const char *tmp = strrchr(lib, '/');
 418         int i;
 419
 420         printf("dlopen %s\n", lib);
 421         if (tmp != NULL) {
 422                 tmp++;
 423                 for (i = 0; i < ARRAY_SIZE(builtin_plugins); i++)
 424                         if (strcmp(tmp, builtin_plugins[i]) == 0)
 425                                 return (void *)(long)(PLUGIN_DL_BASE + builtin_plugin_ids[i]);
 426         }
 427
 428         return dlopen(lib, RTLD_NOW);
 429 }
 430
 431 void *SysLoadSym(void *lib, const char *sym) {
 432         unsigned int plugid = (unsigned int)(long)lib;
 433
 434         if (PLUGIN_DL_BASE <= plugid && plugid < PLUGIN_DL_BASE + ARRAY_SIZE(builtin_plugins))
 435                 return plugin_link(plugid - PLUGIN_DL_BASE, sym);
 436
 437         return dlsym(lib, sym);
 438 }
 439
 440 const char *SysLibError() {
 441         return dlerror();
 442 }
 443
 444 void SysCloseLibrary(void *lib) {
 445         unsigned int plugid = (unsigned int)(long)lib;
 446
 447         if (PLUGIN_DL_BASE <= plugid && plugid < PLUGIN_DL_BASE + ARRAY_SIZE(builtin_plugins))
 448                 return;
 449
 450         dlclose(lib);
 451 }
 452
 453