Shamusworld >> Repos - virtualjaguar/blob - src/vj.cpp

   1 //
   2 // Virtual Jaguar Emulator
   3 //
   4 // Original codebase by David Raingeard (Cal2)
   5 // GCC/SDL port by Niels Wagenaar (Linux/WIN32) and Caz (BeOS)
   6 // Cleanups/fixes/enhancements by James L. Hammons and Adam Green
   7 //
   8
   9 #ifdef __GCCUNIX__
  10 #include <unistd.h>                                                                     // Is this necessary anymore?
  11 #endif
  12
  13 #include <time.h>
  14 #include <SDL.h>
  15 #include "jaguar.h"
  16 #include "video.h"
  17 #include "gui.h"
  18 #include "sdlemu_opengl.h"
  19 #include "settings.h"                                                           // Pull in "vjs" struct
  20
  21 // Uncomment this for speed control (?)
  22 //#define SPEED_CONTROL
  23
  24 // Uncomment this to use built-in BIOS/CD-ROM BIOS
  25 // You'll need a copy of jagboot.h & jagcd.h for this to work...!
  26 //#define USE_BUILT_IN_BIOS
  27
  28 #ifdef USE_BUILT_IN_BIOS
  29 #include "jagboot.h"
  30 #include "jagcd.h"
  31 #endif
  32
  33 // Private function prototypes
  34
  35 // External variables
  36
  37 extern uint8 * jaguar_mainRam;
  38 extern uint8 * jaguar_mainRom;
  39 extern uint8 * jaguar_bootRom;
  40 extern uint8 * jaguar_CDBootROM;
  41
  42 // Global variables (export capable)
  43 //should these even be here anymore?
  44
  45 bool finished = false;
  46 bool showGUI = false;
  47 bool showMessage = false;
  48 uint32 showMessageTimeout;
  49 char messageBuffer[200];
  50 bool BIOSLoaded = false;
  51 bool CDBIOSLoaded = false;
  52
  53 //
  54 // The main emulator loop (what else?)
  55 //
  56 //Maybe we should move the video stuff to TOM? Makes more sense to put it there...
  57 //Actually, it would probably be better served in VIDEO.CPP... !!! FIX !!! [DONE]
  58 uint32 totalFrames;//temp, so we can grab this from elsewhere...
  59 int main(int argc, char * argv[])
  60 {
  61 //      uint32 startTime;//, totalFrames;//, endTime;//, w, h;
  62 //      uint32 nNormalLast = 0;
  63 //      int32 nNormalFrac = 0;
  64         int32 nFrameskip = 0;                                                   // Default: Show every frame
  65 //      int32 nFrame = 0;                                                               // No. of Frame
  66
  67         printf("Virtual Jaguar GCC/SDL Portable Jaguar Emulator v1.0.8\n");
  68         printf("Based upon Virtual Jaguar core v1.0.0 by David Raingeard.\n");
  69         printf("Written by Niels Wagenaar (Linux/WIN32), Carwin Jones (BeOS),\n");
  70         printf("James L. Hammons (WIN32) and Adam Green (MacOS)\n");
  71         printf("Contact: http://sdlemu.ngemu.com/ | sdlemu@ngemu.com\n");
  72
  73         bool haveCart = false;                                                  // Assume there is no cartridge...!
  74
  75         log_init("vj.log");
  76         LoadVJSettings();                                                               // Get config file settings...
  77
  78         // Check the switches... ;-)
  79         // NOTE: Command line switches can override any config file settings, thus the
  80         //       proliferation of the noXXX switches. ;-)
  81
  82         for(int i=1; i<argc || argv[i]!=NULL; i++)
  83         {
  84                 // This would be the most likely place to do the cart loading...
  85                 if (argv[i][0] != '-')
  86                         haveCart = true;                                                // It looks like we have a cartridge!
  87
  88                 if (!strcmp(argv[i], "-joystick"))
  89                         vjs.useJoystick = true;
  90
  91                 if (!strcmp(argv[i], "-joyport"))
  92                 {
  93                         vjs.joyport = atoi(argv[++i]) + 1;
  94                         if (vjs.joyport > 3)
  95                                 vjs.joyport = 3;
  96                 }
  97
  98                 if (!strcmp(argv[i], "-frameskip"))
  99                 {
 100                         nFrameskip = atoi(argv[++i]) + 1;
 101                         if (nFrameskip > 10)
 102                                 nFrameskip = 10;
 103 #ifdef SPEED_CONTROL
 104                         nFrameskip = 0;
 105 #endif
 106                 }
 107
 108                 if (!strcmp(argv[i], "-bios"))
 109                         vjs.useJaguarBIOS = true;
 110
 111                 if (!strcmp(argv[i], "-nobios"))
 112                         vjs.useJaguarBIOS = false;
 113
 114                 if (!strcmp(argv[i], "-dsp"))
 115                         vjs.DSPEnabled = true;
 116
 117                 if (!strcmp(argv[i], "-nodsp"))
 118                         vjs.DSPEnabled = false;
 119
 120                 if (!strcmp(argv[i], "-pipeline"))
 121                         vjs.usePipelinedDSP = true;
 122
 123                 if (!strcmp(argv[i], "-nopipeline"))
 124                         vjs.usePipelinedDSP = false;
 125
 126                 if (!strcmp(argv[i], "-gl"))
 127                         vjs.useOpenGL = true;
 128
 129                 if (!strcmp(argv[i], "-nogl"))
 130                         vjs.useOpenGL = false;
 131
 132                 if (!strcmp(argv[i], "-fullscreen"))
 133                         vjs.fullscreen = true;
 134
 135                 if (!strcmp(argv[i], "-window"))
 136                         vjs.fullscreen = false;
 137
 138                 if (!strcmp(argv[i], "-pal"))
 139                         vjs.hardwareTypeNTSC = false;
 140
 141                 if (!strcmp(argv[i], "-ntsc"))
 142                         vjs.hardwareTypeNTSC = true;
 143
 144                 if (!strcmp(argv[i], "-help") || !strcmp(argv[i], "-?"))
 145                 {
 146                     printf("Usage: \n\n");
 147                         printf("vj [romfile] [switches]\n");
 148                         printf("  -? or -help     : Display usage and switches                \n");
 149                         printf("  -frameskip 1-10 : Enable frameskip 1 - 10 (default: none)   \n");
 150                         printf("  -joystick       : Enable joystick/gamepad                   \n");
 151                         printf("  -joyport 0-3    : Select desired joystick port              \n");
 152                         printf("  -bios           : Boot cart using Jaguar BIOS ROM           \n");
 153                         printf("  -nobios         : Boot cart without using Jaguar BIOS ROM   \n");
 154                         printf("  -dsp            : Force VJ to use the DSP                   \n");
 155                         printf("  -nodsp          : Force VJ to run without the DSP           \n");
 156                         printf("  -pipeline       : Use the DSP pipelined core                \n");
 157                         printf("  -nopipeline     : Use the DSP non-pipelined core            \n");
 158                         printf("  -gl             : Use OpenGL rendering                      \n");
 159                         printf("  -nogl           : Use old non-OpenGL rendering              \n");
 160                         printf("  -fullscreen     : Enable fullscreen mode (default: windowed)\n");
 161                         printf("  -window         : Enable windowed mode                      \n");
 162                         printf("  -pal            : Force VJ to PAL mode (default: NTSC)      \n");
 163                         printf("  -ntsc           : Force VJ to NTSC mode                     \n");
 164                         printf("\nInvoking Virtual Jagaur with no ROM file will cause it to boot up\n");
 165                         printf("with the VJ GUI.\n");
 166                         return 1;
 167                 }
 168     }
 169
 170         // Set up SDL library
 171         if (SDL_Init(SDL_INIT_VIDEO | SDL_INIT_JOYSTICK | SDL_INIT_AUDIO | SDL_INIT_TIMER) < 0)
 172 //              | SDL_INIT_CDROM) < 0)
 173 //              | SDL_INIT_CDROM | SDL_INIT_NOPARACHUTE) < 0)
 174         {
 175                 WriteLog("VJ: Could not initialize the SDL library: %s\n", SDL_GetError());
 176                 return -1;
 177         }
 178
 179         WriteLog("VJ: SDL successfully initialized.\n");
 180
 181 WriteLog("Initializing memory subsystem...\n");
 182         InitMemory();
 183 WriteLog("Initializing version...\n");
 184         InitVersion();
 185         version_display(log_get());
 186 WriteLog("Initializing jaguar subsystem...\n");
 187         jaguar_init();
 188
 189         // Get the BIOS ROM
 190 #ifdef USE_BUILT_IN_BIOS
 191         WriteLog("VJ: Using built in BIOS/CD BIOS...\n");
 192         memcpy(jaguar_bootRom, jagBootROM, 0x20000);
 193         memcpy(jaguar_CDBootROM, jagCDROM, 0x40000);
 194         BIOSLoaded = CDBIOSLoaded = true;
 195 #else
 196 //      if (vjs.useJaguarBIOS)
 197 // What would be nice here would be a way to check if the BIOS was loaded so that we
 198 // could disable the pushbutton on the Misc Options menu... !!! FIX !!! [DONE here, but needs to be fixed in GUI as well!]
 199 WriteLog("About to attempt to load BIOSes...\n");
 200         BIOSLoaded = (JaguarLoadROM(jaguar_bootRom, vjs.jagBootPath) == 0x20000 ? true : false);
 201         WriteLog("VJ: BIOS is %savailable...\n", (BIOSLoaded ? "" : "not "));
 202         CDBIOSLoaded = (JaguarLoadROM(jaguar_CDBootROM, vjs.CDBootPath) == 0x40000 ? true : false);
 203         WriteLog("VJ: CD BIOS is %savailable...\n", (CDBIOSLoaded ? "" : "not "));
 204 #endif
 205
 206         SET32(jaguar_mainRam, 0, 0x00200000);                   // Set top of stack...
 207
 208 WriteLog("Initializing video subsystem...\n");
 209         InitVideo();
 210 WriteLog("Initializing GUI subsystem...\n");
 211         InitGUI();
 212
 213         // Get the cartridge ROM (if passed in)
 214         // Now with crunchy GUI goodness!
 215 //      JaguarLoadCart(jaguar_mainRom, (haveCart ? argv[1] : vjs.ROMPath));
 216 //Need to find a better way to handle this crap...
 217 WriteLog("About to start GUI...\n");
 218 //      GUIMain();
 219         GUIMain(haveCart ? argv[1] : NULL);
 220
 221 /*      jaguar_reset();
 222
 223         totalFrames = 0;
 224         startTime = clock();
 225         nNormalLast = 0;                                                                        // Last value of timeGetTime()
 226         nNormalFrac = 0;                                                                        // Extra fraction we did
 227         nNormalLast = SDL_GetTicks();                                           //timeGetTime();
 228
 229         while (!finished)
 230         {
 231 #ifdef SPEED_CONTROL
 232                 nTime = SDL_GetTicks() - nNormalLast;                   // calcule le temps écoulé depuis le dernier affichage
 233                                                                                                                 // nTime est en mili-secondes.
 234                 // détermine le nombre de trames à passer + 1
 235                 nCount = (nTime * 600 - nNormalFrac) / 10000;
 236
 237                 // si le nombre de trames à passer + 1 est nul ou négatif,
 238                 // ne rien faire pendant 2 ms
 239                 if (nCount <= 0)
 240                 {
 241                         //Sleep(2);
 242                         //SDL_Delay(1);
 243                 } // No need to do anything for a bit
 244                 else
 245                 {
 246                         nNormalFrac += nCount * 10000;                          //
 247                         nNormalLast += nNormalFrac / 600;                       // add the duration of nNormalFrac frames
 248                         nNormalFrac %= 600;                                                     //
 249
 250                         // Pas plus de 9 (10-1) trames non affichées
 251                         if (nCount > 10)
 252                                 nCount = 10;
 253                         for(int i=0; i<nCount-1; i++)
 254                                 jaguar_exec(backbuffer, false);
 255 #endif
 256             // Set up new backbuffer with new pixels and data
 257                         JaguarExecute(backbuffer, true);
 258                         totalFrames++;
 259 //WriteLog("Frame #%u...\n", totalFrames);
 260 //extern bool doDSPDis;
 261 //if (totalFrames == 373)
 262 //      doDSPDis = true;
 263
 264                         // Some QnD GUI stuff here...
 265                         if (showGUI)
 266                         {
 267                                 extern uint32 gpu_pc, dsp_pc;
 268                                 DrawString(backbuffer, 8, 8, false, "GPU PC: %08X", gpu_pc);
 269                                 DrawString(backbuffer, 8, 16, false, "DSP PC: %08X", dsp_pc);
 270                         }
 271
 272                         // Simple frameskip
 273                         if (nFrame == nFrameskip)
 274                         {
 275                                 RenderBackbuffer();
 276                                 nFrame = 0;
 277                         }
 278                         else
 279                                 nFrame++;
 280
 281                         joystick_exec();
 282
 283 #ifdef SPEED_CONTROL
 284                 }
 285 #endif
 286         }*/
 287
 288 //This is no longer accurate...!
 289 //      int elapsedTime = clock() - startTime;
 290 //      int fps = (1000 * totalFrames) / elapsedTime;
 291 //      WriteLog("VJ: Ran at an average of %i FPS.\n", fps);
 292
 293         jaguar_done();
 294         VersionDone();
 295         MemoryDone();
 296         VideoDone();
 297         log_done();
 298
 299         // Free SDL components last...!
 300 //      SDL_QuitSubSystem(SDL_INIT_VIDEO | SDL_INIT_JOYSTICK | SDL_INIT_AUDIO | SDL_INIT_TIMER | SDL_INIT_CDROM);
 301         SDL_QuitSubSystem(SDL_INIT_VIDEO | SDL_INIT_JOYSTICK | SDL_INIT_AUDIO | SDL_INIT_TIMER);
 302         SDL_Quit();
 303
 304     return 0;
 305 }