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 // Private function prototypes
  25
  26 // External variables
  27
  28 extern uint8 * jaguar_mainRam;
  29 extern uint8 * jaguar_mainRom;
  30 extern uint8 * jaguar_bootRom;
  31 extern uint8 * jaguar_CDBootROM;
  32
  33 // Global variables (export capable)
  34 //should these even be here anymore?
  35
  36 bool finished = false;
  37 bool showGUI = false;
  38 bool showMessage = false;
  39 uint32 showMessageTimeout;
  40 char messageBuffer[200];
  41 bool BIOSLoaded = false;
  42 bool CDBIOSLoaded = false;
  43
  44 //
  45 // The main emulator loop (what else?)
  46 //
  47 //Maybe we should move the video stuff to TOM? Makes more sense to put it there...
  48 //Actually, it would probably be better served in VIDEO.CPP... !!! FIX !!! [DONE]
  49 uint32 totalFrames;//temp, so we can grab this from elsewhere...
  50 int main(int argc, char * argv[])
  51 {
  52 //      uint32 startTime;//, totalFrames;//, endTime;//, w, h;
  53 //      uint32 nNormalLast = 0;
  54 //      int32 nNormalFrac = 0;
  55         int32 nFrameskip = 0;                                                   // Default: Show every frame
  56 //      int32 nFrame = 0;                                                               // No. of Frame
  57
  58         printf("Virtual Jaguar GCC/SDL Portable Jaguar Emulator v1.0.7\n");
  59         printf("Based upon Virtual Jaguar core v1.0.0 by David Raingeard.\n");
  60         printf("Written by Niels Wagenaar (Linux/WIN32), Carwin Jones (BeOS),\n");
  61         printf("James L. Hammons (WIN32) and Adam Green (MacOS)\n");
  62         printf("Contact: http://sdlemu.ngemu.com/ | sdlemu@ngemu.com\n");
  63
  64         bool haveCart = false;                                                  // Assume there is no cartridge...!
  65
  66         log_init("vj.log");
  67         LoadVJSettings();                                                               // Get config file settings...
  68
  69         // Check the switches... ;-)
  70         // NOTE: Command line switches can override any config file settings, thus the
  71         //       proliferation of the noXXX switches. ;-)
  72
  73         for(int i=1; i<argc || argv[i]!=NULL; i++)
  74         {
  75                 // This would be the most likely place to do the cart loading...
  76                 if (argv[i][0] != '-')
  77                         haveCart = true;                                                // It looks like we have a cartridge!
  78
  79                 if (!strcmp(argv[i], "-joystick"))
  80                         vjs.useJoystick = true;
  81
  82                 if (!strcmp(argv[i], "-joyport"))
  83                 {
  84                         vjs.joyport = atoi(argv[++i]) + 1;
  85                         if (vjs.joyport > 3)
  86                                 vjs.joyport = 3;
  87                 }
  88
  89                 if (!strcmp(argv[i], "-frameskip"))
  90                 {
  91                         nFrameskip = atoi(argv[++i]) + 1;
  92                         if (nFrameskip > 10)
  93                                 nFrameskip = 10;
  94 #ifdef SPEED_CONTROL
  95                         nFrameskip = 0;
  96 #endif
  97                 }
  98
  99                 if (!strcmp(argv[i], "-bios"))
 100                         vjs.useJaguarBIOS = true;
 101
 102                 if (!strcmp(argv[i], "-nobios"))
 103                         vjs.useJaguarBIOS = false;
 104
 105                 if (!strcmp(argv[i], "-dsp"))
 106                         vjs.DSPEnabled = true;
 107
 108                 if (!strcmp(argv[i], "-nodsp"))
 109                         vjs.DSPEnabled = false;
 110
 111                 if (!strcmp(argv[i], "-pipeline"))
 112                         vjs.usePipelinedDSP = true;
 113
 114                 if (!strcmp(argv[i], "-nopipeline"))
 115                         vjs.usePipelinedDSP = false;
 116
 117                 if (!strcmp(argv[i], "-gl"))
 118                         vjs.useOpenGL = true;
 119
 120                 if (!strcmp(argv[i], "-nogl"))
 121                         vjs.useOpenGL = false;
 122
 123                 if (!strcmp(argv[i], "-fullscreen"))
 124                         vjs.fullscreen = true;
 125
 126                 if (!strcmp(argv[i], "-window"))
 127                         vjs.fullscreen = false;
 128
 129                 if (!strcmp(argv[i], "-pal"))
 130                         vjs.hardwareTypeNTSC = false;
 131
 132                 if (!strcmp(argv[i], "-ntsc"))
 133                         vjs.hardwareTypeNTSC = true;
 134
 135                 if (!strcmp(argv[i], "-help") || !strcmp(argv[i], "-?"))
 136                 {
 137                     printf("Usage: \n\n");
 138                         printf("vj [romfile] [switches]\n");
 139                         printf("  -? or -help     : Display usage and switches                \n");
 140                         printf("  -frameskip 1-10 : Enable frameskip 1 - 10 (default: none)   \n");
 141                         printf("  -joystick       : Enable joystick/gamepad                   \n");
 142                         printf("  -joyport 0-3    : Select desired joystick port              \n");
 143                         printf("  -bios           : Boot cart using Jaguar BIOS ROM           \n");
 144                         printf("  -nobios         : Boot cart without using Jaguar BIOS ROM   \n");
 145                         printf("  -dsp            : Force VJ to use the DSP                   \n");
 146                         printf("  -nodsp          : Force VJ to run without the DSP           \n");
 147                         printf("  -pipeline       : Use the DSP pipelined core                \n");
 148                         printf("  -nopipeline     : Use the DSP non-pipelined core            \n");
 149                         printf("  -gl             : Use OpenGL rendering                      \n");
 150                         printf("  -nogl           : Use old non-OpenGL rendering              \n");
 151                         printf("  -fullscreen     : Enable fullscreen mode (default: windowed)\n");
 152                         printf("  -window         : Enable windowed mode                      \n");
 153                         printf("  -pal            : Force VJ to PAL mode (default: NTSC)      \n");
 154                         printf("  -ntsc           : Force VJ to NTSC mode                     \n");
 155                         printf("\nInvoking Virtual Jagaur with no ROM file will cause it to boot up\n");
 156                         printf("with the VJ GUI.\n");
 157                         return 1;
 158                 }
 159     }
 160
 161         // Set up SDL library
 162         if (SDL_Init(SDL_INIT_VIDEO | SDL_INIT_JOYSTICK | SDL_INIT_AUDIO | SDL_INIT_TIMER
 163                 | SDL_INIT_CDROM | SDL_INIT_NOPARACHUTE) < 0)
 164         {
 165                 WriteLog("VJ: Could not initialize the SDL library: %s\n", SDL_GetError());
 166                 return -1;
 167         }
 168         WriteLog("VJ: SDL successfully initialized.\n");
 169
 170 WriteLog("Initializing memory subsystem...\n");
 171         InitMemory();
 172 WriteLog("Initializing version...\n");
 173         InitVersion();
 174         version_display(log_get());
 175 WriteLog("Initializing jaguar subsystem...\n");
 176         jaguar_init();
 177
 178         // Get the BIOS ROM
 179 //      if (vjs.useJaguarBIOS)
 180 // What would be nice here would be a way to check if the BIOS was loaded so that we
 181 // could disable the pushbutton on the Misc Options menu... !!! FIX !!! [DONE here, but needs to be fixed in GUI as well!]
 182 WriteLog("About to attempt to load BIOSes...\n");
 183         BIOSLoaded = (JaguarLoadROM(jaguar_bootRom, vjs.jagBootPath) == 0x20000 ? true : false);
 184         WriteLog("VJ: BIOS is %savailable...\n", (BIOSLoaded ? "" : "not "));
 185         CDBIOSLoaded = (JaguarLoadROM(jaguar_CDBootROM, vjs.CDBootPath) == 0x40000 ? true : false);
 186         WriteLog("VJ: CD BIOS is %savailable...\n", (CDBIOSLoaded ? "" : "not "));
 187
 188         SET32(jaguar_mainRam, 0, 0x00200000);                   // Set top of stack...
 189
 190 WriteLog("Initializing video subsystem...\n");
 191         InitVideo();
 192 WriteLog("Initializing GUI subsystem...\n");
 193         InitGUI();
 194
 195         // Get the cartridge ROM (if passed in)
 196         // Now with crunchy GUI goodness!
 197 //      JaguarLoadCart(jaguar_mainRom, (haveCart ? argv[1] : vjs.ROMPath));
 198 //Need to find a better way to handle this crap...
 199 WriteLog("About to start GUI...\n");
 200         GUIMain();
 201
 202 /*      jaguar_reset();
 203
 204         totalFrames = 0;
 205         startTime = clock();
 206         nNormalLast = 0;                                                                        // Last value of timeGetTime()
 207         nNormalFrac = 0;                                                                        // Extra fraction we did
 208         nNormalLast = SDL_GetTicks();                                           //timeGetTime();
 209
 210         while (!finished)
 211         {
 212 #ifdef SPEED_CONTROL
 213                 nTime = SDL_GetTicks() - nNormalLast;                   // calcule le temps écoulé depuis le dernier affichage
 214                                                                                                                 // nTime est en mili-secondes.
 215                 // détermine le nombre de trames à passer + 1
 216                 nCount = (nTime * 600 - nNormalFrac) / 10000;
 217
 218                 // si le nombre de trames à passer + 1 est nul ou négatif,
 219                 // ne rien faire pendant 2 ms
 220                 if (nCount <= 0)
 221                 {
 222                         //Sleep(2);
 223                         //SDL_Delay(1);
 224                 } // No need to do anything for a bit
 225                 else
 226                 {
 227                         nNormalFrac += nCount * 10000;                          //
 228                         nNormalLast += nNormalFrac / 600;                       // add the duration of nNormalFrac frames
 229                         nNormalFrac %= 600;                                                     //
 230
 231                         // Pas plus de 9 (10-1) trames non affichées
 232                         if (nCount > 10)
 233                                 nCount = 10;
 234                         for(int i=0; i<nCount-1; i++)
 235                                 jaguar_exec(backbuffer, false);
 236 #endif
 237             // Set up new backbuffer with new pixels and data
 238                         JaguarExecute(backbuffer, true);
 239                         totalFrames++;
 240 //WriteLog("Frame #%u...\n", totalFrames);
 241 //extern bool doDSPDis;
 242 //if (totalFrames == 373)
 243 //      doDSPDis = true;
 244
 245                         // Some QnD GUI stuff here...
 246                         if (showGUI)
 247                         {
 248                                 extern uint32 gpu_pc, dsp_pc;
 249                                 DrawString(backbuffer, 8, 8, false, "GPU PC: %08X", gpu_pc);
 250                                 DrawString(backbuffer, 8, 16, false, "DSP PC: %08X", dsp_pc);
 251                         }
 252
 253                         // Simple frameskip
 254                         if (nFrame == nFrameskip)
 255                         {
 256                                 RenderBackbuffer();
 257                                 nFrame = 0;
 258                         }
 259                         else
 260                                 nFrame++;
 261
 262                         joystick_exec();
 263
 264 #ifdef SPEED_CONTROL
 265                 }
 266 #endif
 267         }*/
 268
 269 //This is no longer accurate...!
 270 //      int elapsedTime = clock() - startTime;
 271 //      int fps = (1000 * totalFrames) / elapsedTime;
 272 //      WriteLog("VJ: Ran at an average of %i FPS.\n", fps);
 273
 274         jaguar_done();
 275         VersionDone();
 276         MemoryDone();
 277         VideoDone();
 278         log_done();
 279
 280         // Free SDL components last...!
 281         SDL_QuitSubSystem(SDL_INIT_VIDEO | SDL_INIT_JOYSTICK | SDL_INIT_AUDIO | SDL_INIT_TIMER | SDL_INIT_CDROM);
 282         SDL_Quit();
 283
 284     return 0;
 285 }