git.maemo.org Git - drnoksnes/blob - platform/config.cpp

   1 #include <stdio.h>
   2 #include <stdlib.h>
   3 #include <string.h>
   4 #include <popt.h>
   5
   6 #include "platform.h"
   7 #include "port.h"
   8 #include "snes9x.h"
   9 #include "display.h"
  10 #include "hgw.h"
  11
  12 #define DIE(format, ...) do { \
  13                 fprintf(stderr, "Died at %s:%d: ", __FILE__, __LINE__ ); \
  14                 fprintf(stderr, format "\n", ## __VA_ARGS__); \
  15                 abort(); \
  16         } while (0);
  17
  18 struct config Config;
  19
  20 /** Path to current rom file, with extension. */
  21 static char * romFile;
  22 /** Path to rom file, without extension.
  23  *  Used as a simple optimization to S9xGetFilename
  24  */
  25 static char * basePath;
  26
  27 static struct poptOption commonOptionsTable[] = {
  28         { "disable-audio", 'a', POPT_ARG_NONE, 0, 1,
  29         "disable emulation and output of audio", 0 },
  30         { "display-framerate", 'r', POPT_ARG_NONE, 0, 2,
  31         "show frames per second counter in lower left corner", 0 },
  32         { "skip-frames", 's', POPT_ARG_INT, 0, 3,
  33         "render only 1 in every N frames", "NUM" },
  34         { "fullscreen", 'f', POPT_ARG_NONE, 0, 4,
  35         "start in fullscreen mode", 0 },
  36         { "transparency", 'y', POPT_ARG_NONE, 0, 5,
  37         "enable transparency effects (slower)", 0 },
  38         { "hacks", 'h', POPT_ARG_STRING | POPT_ARGFLAG_OPTIONAL, 0, 6,
  39         "enable hacks (yes, speed-only, no)", "option" },
  40         { "pal", 'p', POPT_ARG_NONE, 0, 7,
  41         "run in PAL mode", 0 },
  42         { "ntsc", 'n', POPT_ARG_NONE, 0, 8,
  43         "run in NTSC mode", 0 },
  44         { "turbo", 't', POPT_ARG_NONE, 0, 9,
  45         "turbo mode (do not try to sleep between frames)", 0 },
  46         { "conf", 'c', POPT_ARG_STRING, 0, 10,
  47         "extra configuration file to load", "FILE" },
  48         { "mouse", 'm', POPT_ARG_INT | POPT_ARGFLAG_OPTIONAL, 0, 11,
  49         "enable mouse on controller NUM", "NUM"},
  50         { "superscope", 'e', POPT_ARG_NONE, 0, 12,
  51         "enable SuperScope", 0},
  52         { "snapshot", 'o', POPT_ARG_NONE, 0, 13,
  53         "unfreeze previous game on start and freeze game on exit", 0 },
  54         { "audio-rate", 'u', POPT_ARG_INT, 0, 14,
  55         "audio output rate", "HZ" },
  56         { "audio-buffer-size", 'b', POPT_ARG_INT, 0, 15,
  57         "audio output buffer size", "SAMPLES" },
  58         { "touchscreen", 'd', POPT_ARG_NONE, 0, 16,
  59         "enable touchscreen controls", 0 },
  60         POPT_TABLEEND
  61 };
  62
  63 static struct poptOption configOptionsTable[] = {
  64         { "scancode", '\0', POPT_ARG_INT, 0, 100,
  65         "scancode to map", "CODE" },
  66         { "button", '\0', POPT_ARG_STRING, 0, 101,
  67         "SNES Button to press (A, B, X, Y, L, R, Up, Down, Left, Right)", "name" },
  68         { "action", '\0', POPT_ARG_STRING, 0, 102,
  69         "emulator action to do (fullscreen, quit, ...)", "action" },
  70         { "hacks-file", '\0', POPT_ARG_STRING, 0, 200,
  71         "path to snesadvance.dat file", "FILE" },
  72         POPT_TABLEEND
  73 };
  74
  75 static struct poptOption optionsTable[] = {
  76         { 0, '\0', POPT_ARG_INCLUDE_TABLE, commonOptionsTable, 0,
  77         "Common options", 0 },
  78         { 0, '\0', POPT_ARG_INCLUDE_TABLE, configOptionsTable, 0,
  79         "Configuration file options", 0 },
  80         POPT_AUTOHELP
  81         POPT_TABLEEND
  82 };
  83
  84 static unsigned short buttonNameToBit(const char *s) {
  85         if (strcasecmp(s, "A") == 0) {
  86                 return SNES_A_MASK;
  87         } else if (strcasecmp(s, "B") == 0) {
  88                 return SNES_B_MASK;
  89         } else if (strcasecmp(s, "X") == 0) {
  90                 return SNES_X_MASK;
  91         } else if (strcasecmp(s, "Y") == 0) {
  92                 return SNES_Y_MASK;
  93         } else if (strcasecmp(s, "L") == 0) {
  94                 return SNES_TL_MASK;
  95         } else if (strcasecmp(s, "R") == 0) {
  96                 return SNES_TR_MASK;
  97         } else if (strcasecmp(s, "UP") == 0) {
  98                 return SNES_UP_MASK;
  99         } else if (strcasecmp(s, "DOWN") == 0) {
 100                 return SNES_DOWN_MASK;
 101         } else if (strcasecmp(s, "LEFT") == 0) {
 102                 return SNES_LEFT_MASK;
 103         } else if (strcasecmp(s, "RIGHT") == 0) {
 104                 return SNES_RIGHT_MASK;
 105         } else if (strcasecmp(s, "START") == 0) {
 106                 return SNES_START_MASK;
 107         } else if (strcasecmp(s, "SELECT") == 0) {
 108                 return SNES_SELECT_MASK;
 109         } else {
 110                 DIE("Bad button name: %s\n", s);
 111         }
 112 }
 113
 114 static unsigned char actionNameToBit(const char *s) {
 115         if (strcasecmp(s, "quit") == 0) {
 116                 return kActionQuit;
 117         } else if (strcasecmp(s, "fullscreen") == 0) {
 118                 return kActionToggleFullscreen;
 119         } else if (strcasecmp(s, "quickload1") == 0) {
 120                 return kActionQuickLoad1;
 121         } else if (strcasecmp(s, "quicksave1") == 0) {
 122                 return kActionQuickSave1;
 123         } else if (strcasecmp(s, "quickload2") == 0) {
 124                 return kActionQuickLoad2;
 125         } else if (strcasecmp(s, "quicksave2") == 0) {
 126                 return kActionQuickSave2;
 127         } else {
 128                 DIE("Bad action name: %s\n", s);
 129         }
 130 }
 131
 132 const char * S9xGetFilename(FileTypes file)
 133 {
 134         static char filename[PATH_MAX + 1];
 135         const char * ext;
 136         switch (file) {
 137                 case FILE_ROM:
 138                         return romFile;
 139                 case FILE_SRAM:
 140                         ext = "srm";
 141                         break;
 142                 case FILE_FREEZE:
 143                         ext = "frz.gz";
 144                         break;
 145                 case FILE_CHT:
 146                         ext = "cht";
 147                         break;
 148                 case FILE_IPS:
 149                         ext = "ips";
 150                         break;
 151                 case FILE_SCREENSHOT:
 152                         ext = "png";
 153                         break;
 154                 case FILE_SDD1_DAT:
 155                         ext = "dat";
 156                         break;
 157                 default:
 158                         ext = "???";
 159                         break;
 160         }
 161
 162         snprintf(filename, PATH_MAX, "%s.%s", basePath, ext);
 163         return filename;
 164 }
 165
 166 const char * S9xGetQuickSaveFilename(unsigned int slot)
 167 {
 168         static char filename[PATH_MAX + 1];
 169         snprintf(filename, PATH_MAX, "%s.frz.%u.gz", basePath, slot);
 170         return filename;
 171 }
 172
 173 static void loadDefaults()
 174 {
 175         ZeroMemory(&Settings, sizeof(Settings));
 176         ZeroMemory(&Config, sizeof(Config));
 177
 178         romFile = 0;
 179         basePath = 0;
 180
 181         Config.quitting = false;
 182         Config.enableAudio = true;
 183         Config.fullscreen = false;
 184         Config.xsp = false;
 185         Config.hacksFile = 0;
 186         Config.touchscreenInput = false;
 187
 188         Settings.JoystickEnabled = FALSE;
 189         Settings.SoundPlaybackRate = 22050;
 190         Settings.Stereo = TRUE;
 191         Settings.SoundBufferSize = 512; // in samples
 192         Settings.CyclesPercentage = 100;
 193         Settings.DisableSoundEcho = FALSE;
 194         Settings.APUEnabled = FALSE;
 195         Settings.H_Max = SNES_CYCLES_PER_SCANLINE;
 196         Settings.SkipFrames = AUTO_FRAMERATE;
 197         Settings.Shutdown = Settings.ShutdownMaster = TRUE;
 198         Settings.FrameTimePAL = 20;     // in msecs
 199         Settings.FrameTimeNTSC = 16;
 200         Settings.FrameTime = Settings.FrameTimeNTSC;
 201         Settings.DisableSampleCaching = FALSE;
 202         Settings.DisableMasterVolume = FALSE;
 203         Settings.Mouse = FALSE;
 204         Settings.SuperScope = FALSE;
 205         Settings.MultiPlayer5 = FALSE;
 206         Settings.ControllerOption = SNES_JOYPAD;
 207
 208         Settings.ForceTransparency = FALSE;
 209         Settings.Transparency = FALSE;
 210         Settings.SixteenBit = TRUE;
 211
 212         Settings.SupportHiRes = FALSE;
 213         Settings.NetPlay = FALSE;
 214         Settings.ServerName [0] = 0;
 215         Settings.AutoSaveDelay = 30;
 216         Settings.ApplyCheats = FALSE;
 217         Settings.TurboMode = FALSE;
 218         Settings.TurboSkipFrames = 15;
 219
 220     Settings.ForcePAL = FALSE;
 221     Settings.ForceNTSC = FALSE;
 222
 223     Settings.HacksEnabled = FALSE;
 224     Settings.HacksFilter = FALSE;
 225
 226         Settings.HBlankStart = (256 * Settings.H_Max) / SNES_HCOUNTER_MAX;
 227
 228         Settings.AutoSaveDelay = 15*60; // Autosave each 15 minutes.
 229 }
 230
 231 void S9xSetRomFile(const char * path)
 232 {
 233         if (romFile) {
 234                 free(romFile);
 235                 free(basePath);
 236         }
 237
 238         romFile = strndup(path, PATH_MAX);
 239         basePath = strdup(romFile);
 240
 241         // Truncate base path at the last '.' char
 242         char * c = strrchr(basePath, '.');
 243         if (c) {
 244                 if (strcasecmp(c, ".gz") == 0) {
 245                         // Ignore the .gz part when truncating
 246                         *c = '\0';
 247                         c = strrchr(basePath, '.');
 248                         if (c) {
 249                                 *c = '\0';
 250                         }
 251                 } else {
 252                         *c = '\0';
 253                 }
 254         }
 255 }
 256
 257 static bool gotRomFile()
 258 {
 259         return romFile ? true : false;
 260 }
 261
 262 static void setHacks(const char * value)
 263 {
 264         // Unconditionally enable hacks even if no argument passed
 265         Settings.HacksEnabled = TRUE;
 266
 267         if (!value) return;
 268
 269         if (strcasecmp(value, "speed-only") == 0 ||
 270                 strcasecmp(value, "speed") == 0 ||
 271                 strcasecmp(value, "s") == 0) {
 272                         Settings.HacksFilter = TRUE;
 273         } else if (strcasecmp(value, "yes") == 0 ||
 274                 strcasecmp(value, "y") == 0) {
 275                         // Do nothing
 276         } else if (strcasecmp(value, "no") == 0 ||
 277                 strcasecmp(value, "n") == 0) {
 278                         Settings.HacksEnabled = FALSE;
 279         } else {
 280                 // Hack: the user probably wants to enable hacks
 281                 // and use this argument as the ROM file.
 282                 // Wonder why popt does not support this or if there's a better way.
 283                 S9xSetRomFile(value);
 284         }
 285 }
 286
 287 static void loadConfig(poptContext optCon, const char * file)
 288 {
 289         char * out;
 290         int newargc, ret;
 291         const char ** newargv;
 292         FILE * fp;
 293
 294         fp = fopen (file, "r");
 295         if (!fp) {
 296                 fprintf(stderr, "Cannot open config file %s\n", file);
 297                 return;
 298         }
 299
 300         ret = poptConfigFileToString (fp, &out, 0);
 301         if (ret)
 302             DIE("Cannot parse config file %s. ret=%d\n", file, ret);
 303
 304         poptParseArgvString(out, &newargc, &newargv);
 305
 306         poptStuffArgs(optCon, newargv);
 307
 308         free(out);
 309         fclose(fp);
 310         /* XXX: currently leaking newargv */
 311 }
 312
 313 static void parseArgs(poptContext optCon)
 314 {
 315         int rc;
 316         unsigned char scancode = 0;
 317
 318         while ((rc = poptGetNextOpt(optCon)) > 0) {
 319                 const char * val;
 320                 switch (rc) {
 321                         case 1:
 322                                 Config.enableAudio = false;
 323                                 break;
 324                         case 2:
 325                                 Settings.DisplayFrameRate = TRUE;
 326                                 break;
 327                         case 3:
 328                                 Settings.SkipFrames = atoi(poptGetOptArg(optCon));
 329                                 break;
 330                         case 4:
 331                                 Config.fullscreen = true;
 332                                 break;
 333                         case 5:
 334                                 Settings.SixteenBit = TRUE;
 335                                 Settings.Transparency = TRUE;
 336                                 break;
 337                         case 6:
 338                                 Settings.HacksEnabled = TRUE;
 339                                 setHacks(poptGetOptArg(optCon));
 340                                 break;
 341                         case 7:
 342                                 Settings.ForcePAL = TRUE;
 343                                 break;
 344                         case 8:
 345                                 Settings.ForceNTSC = TRUE;
 346                                 break;
 347                         case 9:
 348                                 Settings.TurboMode = TRUE;
 349                                 break;
 350                         case 10:
 351                                 loadConfig(optCon, poptGetOptArg(optCon));
 352                                 break;
 353                         case 11:
 354                                 val = poptGetOptArg(optCon);
 355                                 Settings.Mouse = TRUE;
 356                                 if (!val || atoi(val) <= 1) {
 357                                         // Enable mouse on first controller
 358                                         Settings.ControllerOption = SNES_MOUSE_SWAPPED;
 359                                 } else {
 360                                         // Enable mouse on second controller
 361                                         Settings.ControllerOption = SNES_MOUSE;
 362                                 }
 363                                 break;
 364                         case 12:
 365                                 Settings.SuperScope = TRUE;
 366                                 Settings.ControllerOption = SNES_SUPERSCOPE;
 367                                 break;
 368                         case 13:
 369                                 Config.snapshotLoad = true;
 370                                 Config.snapshotSave = true;
 371                                 break;
 372                         case 14:
 373                                 Settings.SoundPlaybackRate = atoi(poptGetOptArg(optCon));
 374                                 break;
 375                         case 15:
 376                                 Settings.SoundBufferSize = atoi(poptGetOptArg(optCon));
 377                                 break;
 378                         case 16:
 379                                 Config.touchscreenInput = true;
 380                                 break;
 381                         case 100:
 382                                 scancode = atoi(poptGetOptArg(optCon));
 383                                 break;
 384                         case 101:
 385                                 Config.joypad1Mapping[scancode] |=
 386                                         buttonNameToBit(poptGetOptArg(optCon));
 387                                 break;
 388                         case 102:
 389                                 Config.action[scancode] |=
 390                                         actionNameToBit(poptGetOptArg(optCon));
 391                                 break;
 392                         case 200:
 393                                 free(Config.hacksFile);
 394                                 Config.hacksFile = strdup(poptGetOptArg(optCon));
 395                                 break;
 396                         default:
 397                                 DIE("Invalid popt argument (this is a bug): %d", rc);
 398                                 break;
 399                 }
 400         }
 401
 402         if (rc < -1) {
 403                 /* an error occurred during option processing */
 404                 fprintf(stderr, "%s: %s\n",
 405                         poptBadOption(optCon, 0),
 406                         poptStrerror(rc));
 407                 exit(2);
 408         }
 409
 410         /* if there's an extra unparsed arg it's our rom file */
 411         const char * extra_arg = poptGetArg(optCon);
 412         if (extra_arg)
 413                 S9xSetRomFile(extra_arg);
 414 }
 415
 416 void S9xLoadConfig(int argc, const char ** argv)
 417 {
 418         poptContext optCon =
 419                 poptGetContext("drnoksnes", argc, argv, optionsTable, 0);
 420         poptSetOtherOptionHelp(optCon, "<rom>");
 421
 422         // Builtin defaults
 423         loadDefaults();
 424
 425         // Read config file ~/apps/DrNokSnes.txt
 426         char defConfFile[PATH_MAX];
 427         sprintf(defConfFile, "%s/%s", getenv("HOME"), "apps/DrNokSnes.txt");
 428         loadConfig(optCon, defConfFile);
 429
 430         // Command line parameters (including --conf args)
 431         parseArgs(optCon);
 432
 433         if (!gotRomFile() && !hgwLaunched) {
 434                 // User did not specify a ROM file,
 435                 // and we're not being launched from D-Bus.
 436                 fprintf(stderr, "You need to specify a ROM, like this:\n");
 437                 poptPrintUsage(optCon, stdout, 0);
 438                 poptFreeContext(optCon);
 439                 exit(2);
 440         }
 441
 442         poptFreeContext(optCon);
 443 }
 444
 445 void S9xUnloadConfig()
 446 {
 447         if (romFile) {
 448                 free(romFile);
 449                 romFile = 0;
 450         }
 451         if (basePath) {
 452                 free(basePath);
 453                 basePath = 0;
 454         }
 455         if (Config.hacksFile) {
 456                 free(Config.hacksFile);
 457                 Config.hacksFile = 0;
 458         }
 459 }
 460