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 #include <lib/base/econfig.h>
   6
   7 gFBDC *gFBDC::instance;
   8
   9 gFBDC::gFBDC()
  10 {
  11         instance=this;
  12         fb=new fbClass;
  13
  14         if (!fb->Available())
  15                 eFatal("no framebuffer available");
  16
  17         fb->SetMode(720, 576, 8);
  18
  19         for (int y=0; y<576; y++)                                                                                                                                                // make whole screen transparent
  20                 memset(fb->lfb+y*fb->Stride(), 0x00, fb->Stride());
  21
  22         surface.type = 0;
  23         surface.x = 720;
  24         surface.y = 576;
  25         surface.bpp = 8;
  26         surface.bypp = 1;
  27         surface.stride = fb->Stride();
  28         surface.data = fb->lfb;
  29         surface.clut.colors=256;
  30         surface.clut.data=new gRGB[surface.clut.colors];
  31
  32         m_pixmap = new gPixmap(&surface);
  33
  34         memset(surface.clut.data, 0, sizeof(*surface.clut.data)*surface.clut.colors);
  35         reloadSettings();
  36 }
  37
  38 gFBDC::~gFBDC()
  39 {
  40         delete fb;
  41         instance=0;
  42 }
  43
  44 void gFBDC::calcRamp()
  45 {
  46 #if 0
  47         float fgamma=gamma ? gamma : 1;
  48         fgamma/=10.0;
  49         fgamma=1/log(fgamma);
  50         for (int i=0; i<256; i++)
  51         {
  52                 float raw=i/255.0; // IIH, float.
  53                 float corr=pow(raw, fgamma) * 256.0;
  54
  55                 int d=corr * (float)(256-brightness) / 256 + brightness;
  56                 if (d < 0)
  57                         d=0;
  58                 if (d > 255)
  59                         d=255;
  60                 ramp[i]=d;
  61
  62                 rampalpha[i]=i*alpha/256;
  63         }
  64 #endif
  65         for (int i=0; i<256; i++)
  66         {
  67                 int d;
  68                 d=i;
  69                 d=(d-128)*(gamma+64)/(128+64)+128;
  70                 d+=brightness-128; // brightness correction
  71                 if (d<0)
  72                         d=0;
  73                 if (d>255)
  74                         d=255;
  75                 ramp[i]=d;
  76
  77                 rampalpha[i]=i*alpha/256;
  78         }
  79
  80         rampalpha[255]=255; // transparent BLEIBT bitte so.
  81 }
  82
  83 void gFBDC::setPalette()
  84 {
  85         if (!surface.clut.data)
  86                 return;
  87
  88         for (int i=0; i<256; ++i)
  89         {
  90                 fb->CMAP()->red[i]=ramp[surface.clut.data[i].r]<<8;
  91                 fb->CMAP()->green[i]=ramp[surface.clut.data[i].g]<<8;
  92                 fb->CMAP()->blue[i]=ramp[surface.clut.data[i].b]<<8;
  93                 fb->CMAP()->transp[i]=rampalpha[surface.clut.data[i].a]<<8;
  94                 if (!fb->CMAP()->red[i])
  95                         fb->CMAP()->red[i]=0x100;
  96         }
  97         fb->PutCMAP();
  98 }
  99
 100 void gFBDC::exec(gOpcode *o)
 101 {
 102         switch (o->opcode)
 103         {
 104         case gOpcode::setPalette:
 105         {
 106                 gDC::exec(o);
 107                 setPalette();
 108                 break;
 109         }
 110         default:
 111                 gDC::exec(o);
 112                 break;
 113         }
 114 }
 115
 116 void gFBDC::setAlpha(int a)
 117 {
 118         alpha=a;
 119
 120         calcRamp();
 121         setPalette();
 122 }
 123
 124 void gFBDC::setBrightness(int b)
 125 {
 126         brightness=b;
 127
 128         calcRamp();
 129         setPalette();
 130 }
 131
 132 void gFBDC::setGamma(int g)
 133 {
 134         gamma=g;
 135
 136         calcRamp();
 137         setPalette();
 138 }
 139
 140 void gFBDC::saveSettings()
 141 {
 142         eConfig::getInstance()->setKey("/ezap/osd/alpha", alpha);
 143         eConfig::getInstance()->setKey("/ezap/osd/gamma", gamma);
 144         eConfig::getInstance()->setKey("/ezap/osd/brightness", brightness);
 145 }
 146
 147 void gFBDC::reloadSettings()
 148 {
 149         if (eConfig::getInstance()->getKey("/ezap/osd/alpha", alpha))
 150                 alpha=255;
 151         if (eConfig::getInstance()->getKey("/ezap/osd/gamma", gamma))
 152                 gamma=128;
 153         if (eConfig::getInstance()->getKey("/ezap/osd/brightness", brightness))
 154                 brightness=128;
 155
 156         calcRamp();
 157         setPalette();
 158 }
 159
 160 // eAutoInitPtr<gFBDC> init_gFBDC(eAutoInitNumbers::graphic-1, "GFBDC");