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         Config.PsxAuto = 1;
 189
 190         snprintf(Config.PatchesDir, sizeof(Config.PatchesDir), "." PATCHES_DIR);
 191 /*
 192         // switch to plugin dotdir
 193         // this lets plugins work without modification!
 194         gchar *plugin_default_dir = g_build_filename(getenv("HOME"), PLUGINS_DIR, NULL);
 195         chdir(plugin_default_dir);
 196         g_free(plugin_default_dir);
 197 */
 198
 199         if (cdfile)
 200                 set_cd_image(cdfile);
 201
 202         if (SysInit() == -1)
 203                 return 1;
 204
 205         // frontend stuff
 206         in_init();
 207         in_probe();
 208         plat_init();
 209         menu_init();
 210
 211         if (LoadPlugins() == -1) {
 212                 SysMessage("Failed loading plugins!");
 213                 return 1;
 214         }
 215         pcnt_hook_plugins();
 216
 217         if (OpenPlugins() == -1) {
 218                 return 1;
 219         }
 220
 221         SysReset();
 222         CheckCdrom();
 223
 224         if (file[0] != '\0') {
 225                 if (Load(file) != -1)
 226                         ready_to_go = 1;
 227         } else {
 228                 if (cdfile) {
 229                         if (LoadCdrom() == -1) {
 230                                 ClosePlugins();
 231                                 printf(_("Could not load CD-ROM!\n"));
 232                                 return -1;
 233                         }
 234                         ready_to_go = 1;
 235                 }
 236         }
 237
 238         // If a state has been specified, then load that
 239         if (loadst) {
 240                 StatesC = loadst - 1;
 241                 char *state_filename = get_state_filename(StatesC);
 242                 int ret = LoadState(state_filename);
 243                 printf("%s state %s\n", ret ? "failed to load" : "loaded", state_filename);
 244                 free(state_filename);
 245         }
 246
 247         if (ready_to_go)
 248                 menu_prepare_emu();
 249         else
 250                 menu_loop();
 251
 252         while (1)
 253         {
 254                 psxCpu->Execute();
 255                 menu_loop();
 256         }
 257
 258         return 0;
 259 }
 260
 261 int SysInit() {
 262         if (EmuInit() == -1) {
 263                 printf("PSX emulator couldn't be initialized.\n");
 264                 return -1;
 265         }
 266
 267         LoadMcds(Config.Mcd1, Config.Mcd2);     /* TODO Do we need to have this here, or in the calling main() function?? */
 268
 269         if (Config.Debug) {
 270                 StartDebugger();
 271         }
 272
 273         return 0;
 274 }
 275
 276 void SysRunGui() {
 277         printf("SysRunGui\n");
 278 }
 279
 280 void StartGui() {
 281         printf("StartGui\n");
 282 }
 283
 284 void SysReset() {
 285         EmuReset();
 286
 287         // hmh core forgets this
 288         CDR_stop();
 289 }
 290
 291 void SysClose() {
 292         EmuShutdown();
 293         ReleasePlugins();
 294
 295         StopDebugger();
 296
 297         if (emuLog != NULL) fclose(emuLog);
 298 }
 299
 300 void SysUpdate() {
 301         PADhandleKey(PAD1_keypressed());
 302         PADhandleKey(PAD2_keypressed());
 303 }
 304
 305 void UpdateMenuSlots() {
 306 }
 307
 308 void OnFile_Exit() {
 309         printf("OnFile_Exit\n");
 310         plat_finish();
 311         SysClose();
 312         exit(0);
 313 }
 314
 315 void state_save(gchar *state_filename) {
 316         char Text[MAXPATHLEN + 20];
 317
 318         GPU_updateLace();
 319
 320         if (SaveState(state_filename) == 0)
 321                 sprintf(Text, _("Saved state %s."), state_filename);
 322         else
 323                 sprintf(Text, _("Error saving state %s!"), state_filename);
 324
 325         GPU_displayText(Text);
 326 }
 327
 328 void state_load(gchar *state_filename) {
 329         int ret;
 330         char Text[MAXPATHLEN + 20];
 331         FILE *fp;
 332
 333         // check if the state file actually exists
 334         fp = fopen(state_filename, "rb");
 335         if (fp == NULL) {
 336                 // file does not exist
 337                 return;
 338         }
 339
 340         fclose(fp);
 341
 342         ret = CheckState(state_filename);
 343
 344         if (ret == 0) {
 345                 SysReset();
 346                 ret = LoadState(state_filename);
 347         }
 348
 349         if (ret == 0) {
 350                 // Check the CD-ROM is valid
 351                 if (CheckCdrom() == -1) {
 352                         ClosePlugins();
 353                         SysRunGui();
 354                         return;
 355                 }
 356
 357                 sprintf(Text, _("Loaded state %s."), state_filename);
 358         } else {
 359                 sprintf(Text, _("Error loading state %s!"), state_filename);
 360         }
 361         GPU_displayText(Text);
 362 }
 363
 364 char *get_state_filename(int i) {
 365         char SStateFile[256];
 366         char trimlabel[33];
 367         int j;
 368
 369         strncpy(trimlabel, CdromLabel, 32);
 370         trimlabel[32] = 0;
 371         for (j = 31; j >= 0; j--)
 372                 if (trimlabel[j] == ' ')
 373                         trimlabel[j] = 0;
 374                 else
 375                         continue;
 376
 377         snprintf(SStateFile, sizeof(SStateFile), "." STATES_DIR "%.32s-%.9s.%3.3d",
 378                 trimlabel, CdromId, i);
 379
 380         return strdup(SStateFile);
 381 }
 382
 383 void SysPrintf(const char *fmt, ...) {
 384         va_list list;
 385         char msg[512];
 386
 387         va_start(list, fmt);
 388         vsprintf(msg, fmt, list);
 389         va_end(list);
 390
 391         fprintf(emuLog, "%s", msg);
 392 }
 393
 394 void SysMessage(const char *fmt, ...) {
 395         va_list list;
 396         char msg[512];
 397
 398         va_start(list, fmt);
 399         vsprintf(msg, fmt, list);
 400         va_end(list);
 401
 402         if (msg[strlen(msg) - 1] == '\n')
 403                 msg[strlen(msg) - 1] = 0;
 404
 405         fprintf(stderr, "%s\n", msg);
 406 }
 407
 408 #if 1
 409 /* this is to avoid having to hack every plugin to stop using $HOME */
 410 char *getenv(const char *name)
 411 {
 412         static char ret[8] = ".";
 413
 414         if (name && strcmp(name, "HOME") == 0 &&
 415                         ((int)name >> 28) == 0) // HACK: let libs find home
 416                 return ret;
 417
 418         return real_getenv(name);
 419 }
 420 #endif
 421
 422 /* we hook statically linked plugins here */
 423 static const char *builtin_plugins[] = {
 424         "builtin_gpu", "builtin_spu", "builtin_cdr", "builtin_pad",
 425         "builtin_cdrcimg",
 426 };
 427
 428 static const int builtin_plugin_ids[] = {
 429         PLUGIN_GPU, PLUGIN_SPU, PLUGIN_CDR, PLUGIN_PAD,
 430         PLUGIN_CDRCIMG,
 431 };
 432
 433 void *SysLoadLibrary(const char *lib) {
 434         const char *tmp = strrchr(lib, '/');
 435         int i;
 436
 437         printf("dlopen %s\n", lib);
 438         if (tmp != NULL) {
 439                 tmp++;
 440                 for (i = 0; i < ARRAY_SIZE(builtin_plugins); i++)
 441                         if (strcmp(tmp, builtin_plugins[i]) == 0)
 442                                 return (void *)(long)(PLUGIN_DL_BASE + builtin_plugin_ids[i]);
 443         }
 444
 445         return dlopen(lib, RTLD_NOW);
 446 }
 447
 448 void *SysLoadSym(void *lib, const char *sym) {
 449         unsigned int plugid = (unsigned int)(long)lib;
 450
 451         if (PLUGIN_DL_BASE <= plugid && plugid < PLUGIN_DL_BASE + ARRAY_SIZE(builtin_plugins))
 452                 return plugin_link(plugid - PLUGIN_DL_BASE, sym);
 453
 454         return dlsym(lib, sym);
 455 }
 456
 457 const char *SysLibError() {
 458         return dlerror();
 459 }
 460
 461 void SysCloseLibrary(void *lib) {
 462         unsigned int plugid = (unsigned int)(long)lib;
 463
 464         if (PLUGIN_DL_BASE <= plugid && plugid < PLUGIN_DL_BASE + ARRAY_SIZE(builtin_plugins))
 465                 return;
 466
 467         dlclose(lib);
 468 }
 469
 470