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