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         for (int y=0; y<576; y++)                                                                                                                                                // make whole screen transparent
  19                 memset(fb->lfb+y*fb->Stride(), 0x00, fb->Stride());
  20
  21         pixmap=new gPixmap();
  22         pixmap->x=720;
  23         pixmap->y=576;
  24         pixmap->bpp=8;
  25         pixmap->bypp=1;
  26         pixmap->stride=fb->Stride();
  27         pixmap->data=fb->lfb;
  28
  29         pixmap->clut.colors=256;
  30         pixmap->clut.data=new gRGB[pixmap->clut.colors];
  31         memset(pixmap->clut.data, 0, sizeof(*pixmap->clut.data)*pixmap->clut.colors);
  32         reloadSettings();
  33 }
  34
  35 gFBDC::~gFBDC()
  36 {
  37         delete pixmap;
  38         delete fb;
  39         instance=0;
  40 }
  41
  42 void gFBDC::calcRamp()
  43 {
  44 #if 0
  45         float fgamma=gamma ? gamma : 1;
  46         fgamma/=10.0;
  47         fgamma=1/log(fgamma);
  48         for (int i=0; i<256; i++)
  49         {
  50                 float raw=i/255.0; // IIH, float.
  51                 float corr=pow(raw, fgamma) * 256.0;
  52
  53                 int d=corr * (float)(256-brightness) / 256 + brightness;
  54                 if (d < 0)
  55                         d=0;
  56                 if (d > 255)
  57                         d=255;
  58                 ramp[i]=d;
  59
  60                 rampalpha[i]=i*alpha/256;
  61         }
  62 #endif
  63         for (int i=0; i<256; i++)
  64         {
  65                 int d;
  66                 d=i;
  67                 d=(d-128)*(gamma+64)/(128+64)+128;
  68                 d+=brightness-128; // brightness correction
  69                 if (d<0)
  70                         d=0;
  71                 if (d>255)
  72                         d=255;
  73                 ramp[i]=d;
  74
  75 /*              if ( eDVB::getInstance()->getmID == 1 )
  76                         rampalpha[i]=i*alpha/65535;
  77                 else*/
  78                         rampalpha[i]=i*alpha/256;
  79         }
  80
  81         rampalpha[255]=255; // transparent BLEIBT bitte so.
  82 }
  83
  84 void gFBDC::setPalette()
  85 {
  86         if (!pixmap->clut.data)
  87                 return;
  88
  89         for (int i=0; i<256; ++i)
  90         {
  91                 fb->CMAP()->red[i]=ramp[pixmap->clut.data[i].r]<<8;
  92                 fb->CMAP()->green[i]=ramp[pixmap->clut.data[i].g]<<8;
  93                 fb->CMAP()->blue[i]=ramp[pixmap->clut.data[i].b]<<8;
  94                 fb->CMAP()->transp[i]=rampalpha[pixmap->clut.data[i].a]<<8;
  95                 if (!fb->CMAP()->red[i])
  96                         fb->CMAP()->red[i]=0x100;
  97         }
  98         fb->PutCMAP();
  99 }
 100
 101 void gFBDC::exec(gOpcode *o)
 102 {
 103         switch (o->opcode)
 104         {
 105         case gOpcode::setPalette:
 106         {
 107                 gPixmapDC::exec(o);
 108                 setPalette();
 109                 break;
 110         }
 111         default:
 112                 gPixmapDC::exec(o);
 113                 break;
 114         }
 115 }
 116
 117 gFBDC *gFBDC::getInstance()
 118 {
 119         return instance;
 120 }
 121
 122 void gFBDC::setAlpha(int a)
 123 {
 124         alpha=a;
 125
 126         calcRamp();
 127         setPalette();
 128 }
 129
 130 void gFBDC::setBrightness(int b)
 131 {
 132         brightness=b;
 133
 134         calcRamp();
 135         setPalette();
 136 }
 137
 138 void gFBDC::setGamma(int g)
 139 {
 140         gamma=g;
 141
 142         calcRamp();
 143         setPalette();
 144 }
 145
 146 void gFBDC::saveSettings()
 147 {
 148         eConfig::getInstance()->setKey("/ezap/osd/alpha", alpha);
 149         eConfig::getInstance()->setKey("/ezap/osd/gamma", gamma);
 150         eConfig::getInstance()->setKey("/ezap/osd/brightness", brightness);
 151 }
 152
 153 void gFBDC::reloadSettings()
 154 {
 155         if (eConfig::getInstance()->getKey("/ezap/osd/alpha", alpha))
 156                 alpha=255;
 157         if (eConfig::getInstance()->getKey("/ezap/osd/gamma", gamma))
 158                 gamma=128;
 159         if (eConfig::getInstance()->getKey("/ezap/osd/brightness", brightness))
 160                 brightness=128;
 161
 162         calcRamp();
 163         setPalette();
 164 }
 165
 166 eAutoInitP0<gFBDC> init_gFBDC(eAutoInitNumbers::graphic+1, "GFBDC");