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         { "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 {
 120                 DIE("Bad action name: %s\n", s);
 121         }
 122 }
 123
 124 const char * S9xGetFilename(FileTypes file)
 125 {
 126         static char filename [PATH_MAX + 1];
 127         const char * ext;
 128         switch (file) {
 129                 case FILE_ROM:
 130                         return romFile;
 131                 case FILE_SRAM:
 132                         ext = "srm";
 133                         break;
 134                 case FILE_FREEZE:
 135                         ext = "frz.gz";
 136                         break;
 137                 case FILE_CHT:
 138                         ext = "cht";
 139                         break;
 140                 case FILE_IPS:
 141                         ext = "ips";
 142                         break;
 143                 case FILE_SCREENSHOT:
 144                         ext = "png";
 145                         break;
 146                 case FILE_SDD1_DAT:
 147                         ext = "dat";
 148                         break;
 149                 default:
 150                         ext = "???";
 151                         break;
 152         }
 153
 154         snprintf(filename, PATH_MAX, "%s.%s", basePath, ext);
 155         return filename;
 156 }
 157
 158 static void loadDefaults()
 159 {
 160         ZeroMemory(&Settings, sizeof(Settings));
 161         ZeroMemory(&Config, sizeof(Config));
 162
 163         romFile = 0;
 164         basePath = 0;
 165
 166         Config.quitting = false;
 167         Config.enableAudio = true;
 168         Config.fullscreen = false;
 169         Config.xsp = false;
 170         Config.hacksFile = 0;
 171         Config.touchscreenInput = false;
 172
 173         Settings.JoystickEnabled = FALSE;
 174         Settings.SoundPlaybackRate = 22050;
 175         Settings.Stereo = TRUE;
 176         Settings.SoundBufferSize = 512; // in samples
 177         Settings.CyclesPercentage = 100;
 178         Settings.DisableSoundEcho = FALSE;
 179         Settings.APUEnabled = FALSE;
 180         Settings.H_Max = SNES_CYCLES_PER_SCANLINE;
 181         Settings.SkipFrames = AUTO_FRAMERATE;
 182         Settings.Shutdown = Settings.ShutdownMaster = TRUE;
 183         Settings.FrameTimePAL = 20;     // in msecs
 184         Settings.FrameTimeNTSC = 16;
 185         Settings.FrameTime = Settings.FrameTimeNTSC;
 186         Settings.DisableSampleCaching = FALSE;
 187         Settings.DisableMasterVolume = FALSE;
 188         Settings.Mouse = FALSE;
 189         Settings.SuperScope = FALSE;
 190         Settings.MultiPlayer5 = FALSE;
 191         Settings.ControllerOption = SNES_JOYPAD;
 192
 193         Settings.ForceTransparency = FALSE;
 194         Settings.Transparency = FALSE;
 195         Settings.SixteenBit = TRUE;
 196
 197         Settings.SupportHiRes = FALSE;
 198         Settings.NetPlay = FALSE;
 199         Settings.ServerName [0] = 0;
 200         Settings.AutoSaveDelay = 30;
 201         Settings.ApplyCheats = FALSE;
 202         Settings.TurboMode = FALSE;
 203         Settings.TurboSkipFrames = 15;
 204
 205     Settings.ForcePAL = FALSE;
 206     Settings.ForceNTSC = FALSE;
 207
 208     Settings.HacksEnabled = FALSE;
 209     Settings.HacksFilter = FALSE;
 210
 211         Settings.HBlankStart = (256 * Settings.H_Max) / SNES_HCOUNTER_MAX;
 212
 213         Settings.AutoSaveDelay = 15*60; // Autosave each 15 minutes.
 214 }
 215
 216 void S9xSetRomFile(const char * path)
 217 {
 218         if (romFile) {
 219                 free(romFile);
 220                 free(basePath);
 221         }
 222
 223         romFile = strndup(path, PATH_MAX);
 224         basePath = strdup(romFile);
 225
 226         // Truncate base path at the last '.' char
 227         char * c = strrchr(basePath, '.');
 228         if (c) {
 229                 if (strcasecmp(c, ".gz") == 0) {
 230                         // Ignore the .gz part when truncating
 231                         *c = '\0';
 232                         c = strrchr(basePath, '.');
 233                         if (c) {
 234                                 *c = '\0';
 235                         }
 236                 } else {
 237                         *c = '\0';
 238                 }
 239         }
 240 }
 241
 242 static bool gotRomFile()
 243 {
 244         return romFile ? true : false;
 245 }
 246
 247 static void setHacks(const char * value)
 248 {
 249         // Unconditionally enable hacks even if no argument passed
 250         Settings.HacksEnabled = TRUE;
 251
 252         if (!value) return;
 253
 254         if (strcasecmp(value, "speed-only") == 0 ||
 255                 strcasecmp(value, "speed") == 0 ||
 256                 strcasecmp(value, "s") == 0) {
 257                         Settings.HacksFilter = TRUE;
 258         } else if (strcasecmp(value, "yes") == 0 ||
 259                 strcasecmp(value, "y") == 0) {
 260                         // Do nothing
 261         } else if (strcasecmp(value, "no") == 0 ||
 262                 strcasecmp(value, "n") == 0) {
 263                         Settings.HacksEnabled = FALSE;
 264         } else {
 265                 // Hack: the user probably wants to enable hacks
 266                 // and use this argument as the ROM file.
 267                 // Wonder why popt does not support this or if there's a better way.
 268                 S9xSetRomFile(value);
 269         }
 270 }
 271
 272 static void loadConfig(poptContext optCon, const char * file)
 273 {
 274         char * out;
 275         int newargc, ret;
 276         const char ** newargv;
 277         FILE * fp;
 278
 279         fp = fopen (file, "r");
 280         if (!fp) {
 281                 fprintf(stderr, "Cannot open config file %s\n", file);
 282                 return;
 283         }
 284
 285         ret = poptConfigFileToString (fp, &out, 0);
 286         if (ret)
 287             DIE("Cannot parse config file %s. ret=%d\n", file, ret);
 288
 289         poptParseArgvString(out, &newargc, &newargv);
 290
 291         poptStuffArgs(optCon, newargv);
 292
 293         free(out);
 294         fclose(fp);
 295         /* XXX: currently leaking newargv */
 296 }
 297
 298 static void parseArgs(poptContext optCon)
 299 {
 300         int rc;
 301         unsigned char scancode = 0;
 302
 303         while ((rc = poptGetNextOpt(optCon)) > 0) {
 304                 const char * val;
 305                 switch (rc) {
 306                         case 1:
 307                                 Config.enableAudio = false;
 308                                 break;
 309                         case 2:
 310                                 Settings.DisplayFrameRate = TRUE;
 311                                 break;
 312                         case 3:
 313                                 Settings.SkipFrames = atoi(poptGetOptArg(optCon));
 314                                 break;
 315                         case 4:
 316                                 Config.fullscreen = true;
 317                                 break;
 318                         case 5:
 319                                 Settings.SixteenBit = TRUE;
 320                                 Settings.Transparency = TRUE;
 321                                 break;
 322                         case 6:
 323                                 Settings.HacksEnabled = TRUE;
 324                                 setHacks(poptGetOptArg(optCon));
 325                                 break;
 326                         case 7:
 327                                 Settings.ForcePAL = TRUE;
 328                                 break;
 329                         case 8:
 330                                 Settings.ForceNTSC = TRUE;
 331                                 break;
 332                         case 9:
 333                                 Settings.TurboMode = TRUE;
 334                                 break;
 335                         case 10:
 336                                 loadConfig(optCon, poptGetOptArg(optCon));
 337                                 break;
 338                         case 11:
 339                                 val = poptGetOptArg(optCon);
 340                                 Settings.Mouse = TRUE;
 341                                 if (!val || atoi(val) <= 1) {
 342                                         // Enable mouse on first controller
 343                                         Settings.ControllerOption = SNES_MOUSE_SWAPPED;
 344                                 } else {
 345                                         // Enable mouse on second controller
 346                                         Settings.ControllerOption = SNES_MOUSE;
 347                                 }
 348                                 break;
 349                         case 12:
 350                                 Settings.SuperScope = TRUE;
 351                                 Settings.ControllerOption = SNES_SUPERSCOPE;
 352                                 break;
 353                         case 13:
 354                                 Config.snapshotLoad = true;
 355                                 Config.snapshotSave = true;
 356                                 break;
 357                         case 14:
 358                                 Settings.SoundPlaybackRate = atoi(poptGetOptArg(optCon));
 359                                 break;
 360                         case 15:
 361                                 Settings.SoundBufferSize = atoi(poptGetOptArg(optCon));
 362                                 break;
 363                         case 16:
 364                                 Config.touchscreenInput = true;
 365                                 break;
 366                         case 100:
 367                                 scancode = atoi(poptGetOptArg(optCon));
 368                                 break;
 369                         case 101:
 370                                 Config.joypad1Mapping[scancode] |=
 371                                         buttonNameToBit(poptGetOptArg(optCon));
 372                                 break;
 373                         case 102:
 374                                 Config.action[scancode] |=
 375                                         actionNameToBit(poptGetOptArg(optCon));
 376                                 break;
 377                         case 200:
 378                                 free(Config.hacksFile);
 379                                 Config.hacksFile = strdup(poptGetOptArg(optCon));
 380                                 break;
 381                         default:
 382                                 DIE("Invalid popt argument (this is a bug): %d", rc);
 383                                 break;
 384                 }
 385         }
 386
 387         if (rc < -1) {
 388                 /* an error occurred during option processing */
 389                 fprintf(stderr, "%s: %s\n",
 390                         poptBadOption(optCon, 0),
 391                         poptStrerror(rc));
 392                 exit(2);
 393         }
 394
 395         /* if there's an extra unparsed arg it's our rom file */
 396         const char * extra_arg = poptGetArg(optCon);
 397         if (extra_arg)
 398                 S9xSetRomFile(extra_arg);
 399 }
 400
 401 void S9xLoadConfig(int argc, const char ** argv)
 402 {
 403         poptContext optCon =
 404                 poptGetContext("drnoksnes", argc, argv, optionsTable, 0);
 405         poptSetOtherOptionHelp(optCon, "<rom>");
 406
 407         // Builtin defaults
 408         loadDefaults();
 409
 410         // Read config file ~/apps/DrNokSnes.txt
 411         char defConfFile[PATH_MAX];
 412         sprintf(defConfFile, "%s/%s", getenv("HOME"), "apps/DrNokSnes.txt");
 413         loadConfig(optCon, defConfFile);
 414
 415         // Command line parameters (including --conf args)
 416         parseArgs(optCon);
 417
 418         if (!gotRomFile() && !hgwLaunched) {
 419                 // User did not specify a ROM file,
 420                 // and we're not being launched from D-Bus.
 421                 fprintf(stderr, "You need to specify a ROM, like this:\n");
 422                 poptPrintUsage(optCon, stdout, 0);
 423                 poptFreeContext(optCon);
 424                 exit(2);
 425         }
 426
 427         poptFreeContext(optCon);
 428 }
 429
 430 void S9xUnloadConfig()
 431 {
 432         if (romFile) {
 433                 free(romFile);
 434                 romFile = 0;
 435         }
 436         if (basePath) {
 437                 free(basePath);
 438                 basePath = 0;
 439         }
 440         if (Config.hacksFile) {
 441                 free(Config.hacksFile);
 442                 Config.hacksFile = 0;
 443         }
 444 }
 445