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 "../plugins/cdrcimg/cdrcimg.h"
  22 #include "common/plat.h"
  23 #include "common/input.h"
  24
  25 int ready_to_go;
  26 int UseGui;
  27 static char *(*real_getenv)(const char *name);
  28
  29 static void make_path(char *buf, size_t size, const char *dir, const char *fname)
  30 {
  31         if (fname)
  32                 snprintf(buf, size, ".%s%s", dir, fname);
  33         else
  34                 snprintf(buf, size, ".%s", dir);
  35 }
  36 #define MAKE_PATH(buf, dir, fname) \
  37         make_path(buf, sizeof(buf), dir, fname)
  38
  39 static void create_profile_dir(const char *directory) {
  40         char path[MAXPATHLEN];
  41
  42         MAKE_PATH(path, directory, NULL);
  43         mkdir(path, S_IRWXU | S_IRWXG);
  44 }
  45
  46 static void CheckSubDir() {
  47         // make sure that ~/.pcsx exists
  48         create_profile_dir(PCSX_DOT_DIR);
  49
  50         create_profile_dir(BIOS_DIR);
  51         create_profile_dir(MEMCARD_DIR);
  52         create_profile_dir(STATES_DIR);
  53         create_profile_dir(PLUGINS_DIR);
  54         create_profile_dir(PLUGINS_CFG_DIR);
  55         create_profile_dir(CHEATS_DIR);
  56         create_profile_dir(PATCHES_DIR);
  57 }
  58
  59 static void CreateMemcard(char *filename, char *conf_mcd) {
  60         struct stat buf;
  61
  62         make_path(conf_mcd, MAXPATHLEN, MEMCARD_DIR, filename);
  63
  64         /* Only create a memory card if an existing one does not exist */
  65         if (stat(conf_mcd, &buf) == -1) {
  66                 SysPrintf(_("Creating memory card: %s\n"), conf_mcd);
  67                 CreateMcd(conf_mcd);
  68         }
  69 }
  70
  71 void set_cd_image(const char *fname)
  72 {
  73         const char *ext;
  74         int len;
  75
  76         len = strlen(fname);
  77         ext = fname;
  78         if (len > 2)
  79                 ext = fname + len - 2;
  80
  81         if (strcasecmp(ext, ".z") == 0) {
  82                 SetIsoFile(NULL);
  83                 cdrcimg_set_fname(fname);
  84                 strcpy(Config.Cdr, "builtin_cdrcimg");
  85         } else {
  86                 SetIsoFile(fname);
  87                 strcpy(Config.Cdr, "builtin_cdr");
  88         }
  89 }
  90
  91 int main(int argc, char *argv[])
  92 {
  93         char file[MAXPATHLEN] = "";
  94         char path[MAXPATHLEN];
  95         const char *cdfile = NULL;
  96         int loadst = 0;
  97         void *tmp;
  98         int i;
  99
 100         tmp = dlopen("/lib/libdl.so.2", RTLD_LAZY);
 101         if (tmp == NULL)
 102                 tmp = dlopen("/lib32/libdl.so.2", RTLD_LAZY);
 103         if (tmp != NULL)
 104                 real_getenv = dlsym(tmp, "getenv");
 105         if (real_getenv == NULL) {
 106                 fprintf(stderr, "%s\n", dlerror());
 107                 return 1;
 108         }
 109         dlclose(tmp);
 110
 111         // what is the name of the config file?
 112         // it may be redefined by -cfg on the command line
 113         strcpy(cfgfile_basename, "pcsx.cfg");
 114
 115         emuLog = stdout;
 116         SetIsoFile(NULL);
 117
 118         // read command line options
 119         for (i = 1; i < argc; i++) {
 120                      if (!strcmp(argv[i], "-psxout")) Config.PsxOut = 1;
 121                 else if (!strcmp(argv[i], "-load")) loadst = atol(argv[++i]);
 122                 else if (!strcmp(argv[i], "-cfg")) {
 123                         if (i+1 >= argc) break;
 124                         strncpy(cfgfile_basename, argv[++i], MAXPATHLEN-100);   /* TODO buffer overruns */
 125                         printf("Using config file %s.\n", cfgfile_basename);
 126                 }
 127                 else if (!strcmp(argv[i], "-cdfile")) {
 128                         char isofilename[MAXPATHLEN];
 129
 130                         if (i+1 >= argc) break;
 131                         strncpy(isofilename, argv[++i], MAXPATHLEN);
 132                         if (isofilename[0] != '/') {
 133                                 getcwd(path, MAXPATHLEN);
 134                                 if (strlen(path) + strlen(isofilename) + 1 < MAXPATHLEN) {
 135                                         strcat(path, "/");
 136                                         strcat(path, isofilename);
 137                                         strcpy(isofilename, path);
 138                                 } else
 139                                         isofilename[0] = 0;
 140                         }
 141
 142                         cdfile = isofilename;
 143                 }
 144                 else if (!strcmp(argv[i], "-h") ||
 145                          !strcmp(argv[i], "-help") ||
 146                          !strcmp(argv[i], "--help")) {
 147                          printf(PACKAGE_NAME " " PACKAGE_VERSION "\n");
 148                          printf("%s\n", _(
 149                                                         " pcsx [options] [file]\n"
 150                                                         "\toptions:\n"
 151                                                         "\t-cdfile FILE\tRuns a CD image file\n"
 152                                                         "\t-nogui\t\tDon't open the GTK GUI\n"
 153                                                         "\t-cfg FILE\tLoads desired configuration file (default: ~/.pcsx/pcsx.cfg)\n"
 154                                                         "\t-psxout\t\tEnable PSX output\n"
 155                                                         "\t-load STATENUM\tLoads savestate STATENUM (1-5)\n"
 156                                                         "\t-h -help\tDisplay this message\n"
 157                                                         "\tfile\t\tLoads file\n"));
 158                          return 0;
 159                 } else {
 160                         strncpy(file, argv[i], MAXPATHLEN);
 161                         if (file[0] != '/') {
 162                                 getcwd(path, MAXPATHLEN);
 163                                 if (strlen(path) + strlen(file) + 1 < MAXPATHLEN) {
 164                                         strcat(path, "/");
 165                                         strcat(path, file);
 166                                         strcpy(file, path);
 167                                 } else
 168                                         file[0] = 0;
 169                         }
 170                 }
 171         }
 172
 173         memset(&Config, 0, sizeof(PcsxConfig));
 174         strcpy(Config.Net, "Disabled");
 175
 176         CheckSubDir();
 177 //      ScanAllPlugins();
 178
 179         strcpy(Config.Bios, "HLE");
 180         strcpy(Config.BiosDir, "./");
 181
 182         strcpy(Config.PluginsDir, "plugins");
 183         strcpy(Config.Gpu, "builtin_gpu");
 184         strcpy(Config.Spu, "builtin_spu");
 185         strcpy(Config.Cdr, "builtin_cdr");
 186         strcpy(Config.Pad1, "builtin_pad");
 187         strcpy(Config.Pad2, "builtin_pad");
 188
 189         // try to load config
 190         // if the config file doesn't exist
 191         if (LoadConfig() == -1) {
 192                 // Uh oh, no config file found, use some defaults
 193                 Config.PsxAuto = 1;
 194
 195                 // create & load default memcards if they don't exist
 196                 CreateMemcard("card1.mcd", Config.Mcd1);
 197                 CreateMemcard("card2.mcd", Config.Mcd2);
 198
 199                 LoadMcds(Config.Mcd1, Config.Mcd2);
 200
 201                 SaveConfig();
 202         }
 203
 204         snprintf(Config.PatchesDir, sizeof(Config.PatchesDir), "." PATCHES_DIR);
 205 /*
 206         // switch to plugin dotdir
 207         // this lets plugins work without modification!
 208         gchar *plugin_default_dir = g_build_filename(getenv("HOME"), PLUGINS_DIR, NULL);
 209         chdir(plugin_default_dir);
 210         g_free(plugin_default_dir);
 211 */
 212
 213         if (cdfile)
 214                 set_cd_image(cdfile);
 215
 216         if (SysInit() == -1)
 217                 return 1;
 218
 219         // frontend stuff
 220         in_init();
 221         in_probe();
 222         plat_init();
 223         menu_init();
 224
 225         if (LoadPlugins() == -1) {
 226                 SysMessage("Failed loading plugins!");
 227                 return 1;
 228         }
 229         pcnt_hook_plugins();
 230
 231         if (OpenPlugins() == -1) {
 232                 return 1;
 233         }
 234
 235         SysReset();
 236         CheckCdrom();
 237
 238         if (file[0] != '\0') {
 239                 if (Load(file) != -1)
 240                         ready_to_go = 1;
 241         } else {
 242                 if (cdfile) {
 243                         if (LoadCdrom() == -1) {
 244                                 ClosePlugins();
 245                                 printf(_("Could not load CD-ROM!\n"));
 246                                 return -1;
 247                         }
 248                         ready_to_go = 1;
 249                 }
 250         }
 251
 252         // If a state has been specified, then load that
 253         if (loadst) {
 254                 StatesC = loadst - 1;
 255                 char *state_filename = get_state_filename(StatesC);
 256                 int ret = LoadState(state_filename);
 257                 printf("%s state %s\n", ret ? "failed to load" : "loaded", state_filename);
 258                 free(state_filename);
 259         }
 260
 261         if (ready_to_go)
 262                 menu_prepare_emu();
 263         else
 264                 menu_loop();
 265
 266         while (1)
 267         {
 268                 psxCpu->Execute();
 269                 menu_loop();
 270         }
 271
 272         return 0;
 273 }
 274
 275 int SysInit() {
 276         if (EmuInit() == -1) {
 277                 printf("PSX emulator couldn't be initialized.\n");
 278                 return -1;
 279         }
 280
 281         LoadMcds(Config.Mcd1, Config.Mcd2);     /* TODO Do we need to have this here, or in the calling main() function?? */
 282
 283         if (Config.Debug) {
 284                 StartDebugger();
 285         }
 286
 287         return 0;
 288 }
 289
 290 void SysRunGui() {
 291         printf("SysRunGui\n");
 292 }
 293
 294 void StartGui() {
 295         printf("StartGui\n");
 296 }
 297
 298 void SysReset() {
 299         EmuReset();
 300 }
 301
 302 void SysClose() {
 303         EmuShutdown();
 304         ReleasePlugins();
 305
 306         StopDebugger();
 307
 308         if (emuLog != NULL) fclose(emuLog);
 309 }
 310
 311 void SysUpdate() {
 312         PADhandleKey(PAD1_keypressed());
 313         PADhandleKey(PAD2_keypressed());
 314 }
 315
 316 void UpdateMenuSlots() {
 317 }
 318
 319 void OnFile_Exit() {
 320         printf("OnFile_Exit\n");
 321         exit(0);
 322 }
 323
 324 void state_save(gchar *state_filename) {
 325         char Text[MAXPATHLEN + 20];
 326
 327         GPU_updateLace();
 328
 329         if (SaveState(state_filename) == 0)
 330                 sprintf(Text, _("Saved state %s."), state_filename);
 331         else
 332                 sprintf(Text, _("Error saving state %s!"), state_filename);
 333
 334         GPU_displayText(Text);
 335 }
 336
 337 void state_load(gchar *state_filename) {
 338         int ret;
 339         char Text[MAXPATHLEN + 20];
 340         FILE *fp;
 341
 342         // check if the state file actually exists
 343         fp = fopen(state_filename, "rb");
 344         if (fp == NULL) {
 345                 // file does not exist
 346                 return;
 347         }
 348
 349         fclose(fp);
 350
 351         ret = CheckState(state_filename);
 352
 353         if (ret == 0) {
 354                 SysReset();
 355                 ret = LoadState(state_filename);
 356         }
 357
 358         if (ret == 0) {
 359                 // Check the CD-ROM is valid
 360                 if (CheckCdrom() == -1) {
 361                         ClosePlugins();
 362                         SysRunGui();
 363                         return;
 364                 }
 365
 366                 sprintf(Text, _("Loaded state %s."), state_filename);
 367         } else {
 368                 sprintf(Text, _("Error loading state %s!"), state_filename);
 369         }
 370         GPU_displayText(Text);
 371 }
 372
 373 char *get_state_filename(int i) {
 374         char SStateFile[256];
 375         char trimlabel[33];
 376         int j;
 377
 378         strncpy(trimlabel, CdromLabel, 32);
 379         trimlabel[32] = 0;
 380         for (j = 31; j >= 0; j--)
 381                 if (trimlabel[j] == ' ')
 382                         trimlabel[j] = 0;
 383                 else
 384                         continue;
 385
 386         snprintf(SStateFile, sizeof(SStateFile), "." STATES_DIR "%.32s-%.9s.%3.3d",
 387                 trimlabel, CdromId, i);
 388
 389         return strdup(SStateFile);
 390 }
 391
 392 void SysPrintf(const char *fmt, ...) {
 393         va_list list;
 394         char msg[512];
 395
 396         va_start(list, fmt);
 397         vsprintf(msg, fmt, list);
 398         va_end(list);
 399
 400         fprintf(emuLog, "%s", msg);
 401 }
 402
 403 void SysMessage(const char *fmt, ...) {
 404         va_list list;
 405         char msg[512];
 406
 407         va_start(list, fmt);
 408         vsprintf(msg, fmt, list);
 409         va_end(list);
 410
 411         if (msg[strlen(msg) - 1] == '\n')
 412                 msg[strlen(msg) - 1] = 0;
 413
 414         fprintf(stderr, "%s\n", msg);
 415 }
 416
 417 #if 1
 418 /* this is to avoid having to hack every plugin to stop using $HOME */
 419 char *getenv(const char *name)
 420 {
 421         static char ret[8] = ".";
 422
 423         if (name && strcmp(name, "HOME") == 0 &&
 424                         ((int)name >> 28) == 0) // HACK: let libs find home
 425                 return ret;
 426
 427         return real_getenv(name);
 428 }
 429 #endif
 430
 431 /* we hook statically linked plugins here */
 432 static const char *builtin_plugins[] = {
 433         "builtin_gpu", "builtin_spu", "builtin_cdr", "builtin_pad",
 434         "builtin_cdrcimg",
 435 };
 436
 437 static const int builtin_plugin_ids[] = {
 438         PLUGIN_GPU, PLUGIN_SPU, PLUGIN_CDR, PLUGIN_PAD,
 439         PLUGIN_CDRCIMG,
 440 };
 441
 442 void *SysLoadLibrary(const char *lib) {
 443         const char *tmp = strrchr(lib, '/');
 444         int i;
 445
 446         printf("dlopen %s\n", lib);
 447         if (tmp != NULL) {
 448                 tmp++;
 449                 for (i = 0; i < ARRAY_SIZE(builtin_plugins); i++)
 450                         if (strcmp(tmp, builtin_plugins[i]) == 0)
 451                                 return (void *)(long)(PLUGIN_DL_BASE + builtin_plugin_ids[i]);
 452         }
 453
 454         return dlopen(lib, RTLD_NOW);
 455 }
 456
 457 void *SysLoadSym(void *lib, const char *sym) {
 458         unsigned int plugid = (unsigned int)(long)lib;
 459
 460         if (PLUGIN_DL_BASE <= plugid && plugid < PLUGIN_DL_BASE + ARRAY_SIZE(builtin_plugins))
 461                 return plugin_link(plugid - PLUGIN_DL_BASE, sym);
 462
 463         return dlsym(lib, sym);
 464 }
 465
 466 const char *SysLibError() {
 467         return dlerror();
 468 }
 469
 470 void SysCloseLibrary(void *lib) {
 471         unsigned int plugid = (unsigned int)(long)lib;
 472
 473         if (PLUGIN_DL_BASE <= plugid && plugid < PLUGIN_DL_BASE + ARRAY_SIZE(builtin_plugins))
 474                 return;
 475
 476         dlclose(lib);
 477 }
 478
 479