vcs.maemo.org Git - drnoksnes/blob - platform/sdlv.cpp

   1 #include <stdio.h>
   2
   3 #include <X11/Xlib.h>
   4 #include <X11/Xutil.h>
   5 #include <X11/extensions/Xsp.h>
   6 #include <SDL.h>
   7 #include <SDL_syswm.h>
   8
   9 #include "snes9x.h"
  10 #include "platform.h"
  11 #include "display.h"
  12 #include "gfx.h"
  13 #include "ppu.h"
  14
  15 #define DIE(format, ...) do { \
  16                 fprintf(stderr, "Died at %s:%d: ", __FILE__, __LINE__ ); \
  17                 fprintf(stderr, format "\n", ## __VA_ARGS__); \
  18                 abort(); \
  19         } while (0);
  20
  21 static SDL_Surface *screen;
  22
  23 static void setDoubling(bool enable)
  24 {
  25         SDL_SysWMinfo wminfo;
  26         SDL_VERSION(&wminfo.version);
  27         if ( SDL_GetWMInfo(&wminfo) ) {
  28                 XSPSetPixelDoubling(wminfo.info.x11.display, 0, enable ? 1 : 0);
  29         }
  30 }
  31
  32 void S9xSetTitle(const char *title)
  33 {
  34         SDL_SysWMinfo info;
  35         SDL_VERSION(&info.version);
  36         if ( SDL_GetWMInfo(&info) ) {
  37                 Display *dpy = info.info.x11.display;
  38                 Window win;
  39                 if (dpy) {
  40                         win = info.info.x11.fswindow;
  41                         if (win) XStoreName(dpy, win, title);
  42                         win = info.info.x11.wmwindow;
  43                         if (win) XStoreName(dpy, win, title);
  44                 }
  45         }
  46 }
  47
  48 static void freeVideoSurface()
  49 {
  50         screen = 0; // There's no need to free the screen surface.
  51         GFX.Screen = 0;
  52
  53         free(GFX.SubScreen); GFX.SubScreen = 0;
  54         free(GFX.ZBuffer); GFX.ZBuffer = 0;
  55         free(GFX.SubZBuffer); GFX.SubZBuffer = 0;
  56 }
  57
  58 static void setupVideoSurface()
  59 {
  60         int w = IMAGE_WIDTH;
  61         int h = IMAGE_HEIGHT;
  62
  63         // By now, just assume xsp == fullscreen. This has to change.
  64         Config.xsp = Config.fullscreen;
  65         if (Config.xsp) {
  66                 w *= 2;
  67                 h *= 2;
  68         } else {
  69                 setDoubling(false); // Before switching video modes
  70         }
  71
  72         screen = SDL_SetVideoMode(w, h,
  73                                                                 Settings.SixteenBit ? 16 : 8,
  74                                                                 SDL_SWSURFACE |
  75                                                                 (Config.fullscreen ? SDL_FULLSCREEN : 0));
  76
  77         if (!screen)
  78                 DIE("SDL_SetVideoMode: %s", SDL_GetError());
  79
  80         SDL_ShowCursor(SDL_DISABLE);
  81
  82         if (Config.xsp) setDoubling(true);
  83
  84         GFX.RealPitch = GFX.Pitch = screen->pitch;
  85
  86         GFX.Screen = (uint8*) screen->pixels;
  87         GFX.SubScreen = (uint8 *) malloc(GFX.RealPitch * IMAGE_HEIGHT);
  88         GFX.ZBuffer =  (uint8 *) malloc(GFX.RealPitch * IMAGE_HEIGHT);
  89         GFX.SubZBuffer = (uint8 *) malloc(GFX.RealPitch * IMAGE_HEIGHT);
  90
  91         GFX.Delta = (GFX.SubScreen - GFX.Screen) >> 1;
  92         GFX.PPL = GFX.Pitch >> 1;
  93         GFX.PPLx2 = GFX.Pitch;
  94         GFX.ZPitch = GFX.Pitch >> 1;
  95
  96         printf("Video: %dx%d, %hu bits per pixel, %s %s\n", screen->w, screen->h,
  97                 screen->format->BitsPerPixel,
  98                 Config.fullscreen ? "fullscreen" : "windowed",
  99                 Config.xsp ? "with pixel doubling" : "");
 100 }
 101
 102 void S9xInitDisplay(int argc, const char ** argv)
 103 {
 104         if (SDL_InitSubSystem(SDL_INIT_VIDEO) < 0)
 105                 DIE("SDL_InitSubSystem(VIDEO): %s", SDL_GetError());
 106
 107         setupVideoSurface();
 108 }
 109
 110 void S9xDeinitDisplay()
 111 {
 112         freeVideoSurface();
 113         SDL_QuitSubSystem(SDL_INIT_VIDEO);
 114 }
 115
 116 void S9xVideoToggleFullscreen()
 117 {
 118         Config.fullscreen = !Config.fullscreen;
 119         freeVideoSurface();
 120         setupVideoSurface();
 121 }
 122
 123 void S9xVideoOutputFocus(bool hasFocus)
 124 {
 125         if (Config.xsp) {
 126                 setDoubling(hasFocus);
 127         }
 128 }
 129
 130 // This is here for completeness, but palette mode is useless on N8x0
 131 void S9xSetPalette ()
 132 {
 133         if (Settings.SixteenBit) return;
 134
 135         SDL_Color colors[256];
 136         int brightness = IPPU.MaxBrightness *138;
 137         for (int i = 0; i < 256; i++)
 138         {
 139                 colors[i].r = ((PPU.CGDATA[i] >> 0) & 0x1F) * brightness;
 140                 colors[i].g = ((PPU.CGDATA[i] >> 5) & 0x1F) * brightness;
 141                 colors[i].b = ((PPU.CGDATA[i] >> 10) & 0x1F) * brightness;
 142         }
 143
 144         SDL_SetColors(screen, colors, 0, 256);
 145 }
 146
 147 bool8_32 S9xInitUpdate ()
 148 {
 149         if(SDL_MUSTLOCK(screen))
 150         {
 151                 if(SDL_LockSurface(screen) < 0) {
 152                         DIE("Failed to lock SDL surface: %s", SDL_GetError());
 153                 }
 154         }
 155
 156         return TRUE;
 157 }
 158
 159 bool8_32 S9xDeinitUpdate (int width, int height, bool8_32 sixteenBit)
 160 {
 161         if(SDL_MUSTLOCK(screen)) SDL_UnlockSurface(screen);
 162
 163         if (Config.xsp) {
 164                 width *= 2;
 165                 height *= 2;
 166         }
 167
 168         SDL_UpdateRect(screen, 0, 0, width, height);
 169
 170         return TRUE;
 171 }
 172