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