lib/gdi/gfbdc.cpp

   1 #include <lib/gdi/gfbdc.h>
   2
   3 #include <lib/base/init.h>
   4 #include <lib/base/init_num.h>
   5
   6 #include <lib/gdi/accel.h>
   7
   8 #include <time.h>
   9
  10 gFBDC *gFBDC::instance;
  11
  12 ePtr<gFBDC> NewgFBDCPtr(void)
  13 {
  14         ePtr<gFBDC> ptr;
  15         gFBDC::getInstance(ptr);
  16         return ptr;
  17 }
  18
  19 gFBDC::gFBDC()
  20 {
  21         instance=this;
  22         fb=new fbClass;
  23
  24         if (!fb->Available())
  25                 eFatal("no framebuffer available");
  26
  27         surface.clut.data = 0;
  28         setResolution(720, 576); // default res
  29
  30         reloadSettings();
  31 }
  32
  33 gFBDC::~gFBDC()
  34 {
  35         delete fb;
  36         delete[] surface.clut.data;
  37         instance=0;
  38 }
  39
  40 void gFBDC::calcRamp()
  41 {
  42 #if 0
  43         float fgamma=gamma ? gamma : 1;
  44         fgamma/=10.0;
  45         fgamma=1/log(fgamma);
  46         for (int i=0; i<256; i++)
  47         {
  48                 float raw=i/255.0; // IIH, float.
  49                 float corr=pow(raw, fgamma) * 256.0;
  50
  51                 int d=corr * (float)(256-brightness) / 256 + brightness;
  52                 if (d < 0)
  53                         d=0;
  54                 if (d > 255)
  55                         d=255;
  56                 ramp[i]=d;
  57
  58                 rampalpha[i]=i*alpha/256;
  59         }
  60 #endif
  61         for (int i=0; i<256; i++)
  62         {
  63                 int d;
  64                 d=i;
  65                 d=(d-128)*(gamma+64)/(128+64)+128;
  66                 d+=brightness-128; // brightness correction
  67                 if (d<0)
  68                         d=0;
  69                 if (d>255)
  70                         d=255;
  71                 ramp[i]=d;
  72
  73                 rampalpha[i]=i*alpha/256;
  74         }
  75
  76         rampalpha[255]=255; // transparent BLEIBT bitte so.
  77 }
  78
  79 void gFBDC::setPalette()
  80 {
  81         if (!surface.clut.data)
  82                 return;
  83
  84         for (int i=0; i<256; ++i)
  85         {
  86                 fb->CMAP()->red[i]=ramp[surface.clut.data[i].r]<<8;
  87                 fb->CMAP()->green[i]=ramp[surface.clut.data[i].g]<<8;
  88                 fb->CMAP()->blue[i]=ramp[surface.clut.data[i].b]<<8;
  89                 fb->CMAP()->transp[i]=rampalpha[surface.clut.data[i].a]<<8;
  90         }
  91         fb->PutCMAP();
  92 }
  93
  94 void gFBDC::exec(gOpcode *o)
  95 {
  96         switch (o->opcode)
  97         {
  98         case gOpcode::setPalette:
  99         {
 100                 gDC::exec(o);
 101                 setPalette();
 102                 break;
 103         }
 104         case gOpcode::flip:
 105         {
 106                 if (m_enable_double_buffering)
 107                 {
 108                         gSurface s(surface);
 109                         surface = surface_back;
 110                         surface_back = s;
 111
 112                         fb->setOffset(surface_back.offset);
 113                 }
 114                 break;
 115         }
 116         case gOpcode::waitVSync:
 117         {
 118                 static timeval l;
 119                 static int t;
 120                 timeval now;
 121
 122                 if (t == 1000)
 123                 {
 124                         gettimeofday(&now, 0);
 125
 126                         int diff = (now.tv_sec - l.tv_sec) * 1000 + (now.tv_usec - l.tv_usec) / 1000;
 127                         eDebug("%d ms latency (%d fps)", diff, t * 1000 / (diff ? diff : 1));
 128                         l = now;
 129                         t = 0;
 130                 }
 131
 132                 ++t;
 133
 134                 fb->waitVSync();
 135                 break;
 136         }
 137         case gOpcode::flush:
 138                 fb->blit();
 139                 break;
 140         default:
 141                 gDC::exec(o);
 142                 break;
 143         }
 144 }
 145
 146 void gFBDC::setAlpha(int a)
 147 {
 148         alpha=a;
 149
 150         calcRamp();
 151         setPalette();
 152 }
 153
 154 void gFBDC::setBrightness(int b)
 155 {
 156         brightness=b;
 157
 158         calcRamp();
 159         setPalette();
 160 }
 161
 162 void gFBDC::setGamma(int g)
 163 {
 164         gamma=g;
 165
 166         calcRamp();
 167         setPalette();
 168 }
 169
 170 void gFBDC::setResolution(int xres, int yres)
 171 {
 172         if ((m_xres == xres) && (m_yres == yres))
 173                 return;
 174
 175         m_xres = xres; m_yres = yres;
 176
 177         fb->SetMode(m_xres, m_yres, 32);
 178
 179         for (int y=0; y<m_yres; y++)    // make whole screen transparent
 180                 memset(fb->lfb+y*fb->Stride(), 0x00, fb->Stride());
 181
 182         surface.type = 0;
 183         surface.x = m_xres;
 184         surface.y = m_yres;
 185         surface.bpp = 32;
 186         surface.bypp = 4;
 187         surface.stride = fb->Stride();
 188         surface.data = fb->lfb;
 189         surface.offset = 0;
 190
 191         surface.data_phys = 50*1024*1024; // FIXME
 192
 193         int fb_size = surface.stride * surface.y;
 194
 195         if (fb->getNumPages() > 1)
 196         {
 197                 m_enable_double_buffering = 1;
 198                 surface_back.type = 0;
 199                 surface_back.x = m_xres;
 200                 surface_back.y = m_yres;
 201                 surface_back.bpp = 32;
 202                 surface_back.bypp = 4;
 203                 surface_back.stride = fb->Stride();
 204                 surface_back.offset = surface.y;
 205                 surface_back.data = fb->lfb + fb_size;
 206                 surface_back.data_phys = surface.data_phys + fb_size;
 207
 208                 fb_size *= 2;
 209         } else
 210                 m_enable_double_buffering = 0;
 211
 212         eDebug("%dkB available for acceleration surfaces.", (fb->Available() - fb_size)/1024);
 213         eDebug("resolution: %d x %d x %d (stride: %d)", surface.x, surface.y, surface.bpp, fb->Stride());
 214
 215         if (gAccel::getInstance())
 216                 gAccel::getInstance()->setAccelMemorySpace(fb->lfb + fb_size, surface.data_phys + fb_size, fb->Available() - fb_size);
 217
 218         if (!surface.clut.data)
 219         {
 220                 surface.clut.colors = 256;
 221                 surface.clut.data = new gRGB[surface.clut.colors];
 222                 memset(surface.clut.data, 0, sizeof(*surface.clut.data)*surface.clut.colors);
 223         }
 224
 225         surface_back.clut = surface.clut;
 226
 227         m_pixmap = new gPixmap(&surface);
 228 }
 229
 230 void gFBDC::saveSettings()
 231 {
 232 }
 233
 234 void gFBDC::reloadSettings()
 235 {
 236         alpha=255;
 237         gamma=128;
 238         brightness=128;
 239
 240         calcRamp();
 241         setPalette();
 242 }
 243
 244 // eAutoInitPtr<gFBDC> init_gFBDC(eAutoInitNumbers::graphic-1, "GFBDC");
 245 #ifndef WITH_SDL
 246 eAutoInitPtr<gFBDC> init_gFBDC(eAutoInitNumbers::graphic-1, "GFBDC");
 247 #endif