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