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