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         default:
 138                 gDC::exec(o);
 139                 break;
 140         }
 141 }
 142
 143 void gFBDC::setAlpha(int a)
 144 {
 145         alpha=a;
 146
 147         calcRamp();
 148         setPalette();
 149 }
 150
 151 void gFBDC::setBrightness(int b)
 152 {
 153         brightness=b;
 154
 155         calcRamp();
 156         setPalette();
 157 }
 158
 159 void gFBDC::setGamma(int g)
 160 {
 161         gamma=g;
 162
 163         calcRamp();
 164         setPalette();
 165 }
 166
 167 void gFBDC::setResolution(int xres, int yres)
 168 {
 169         if ((m_xres == xres) && (m_yres == yres))
 170                 return;
 171
 172         m_xres = xres; m_yres = yres;
 173
 174         fb->SetMode(m_xres, m_yres, 32);
 175
 176         for (int y=0; y<m_yres; y++)    // make whole screen transparent
 177                 memset(fb->lfb+y*fb->Stride(), 0x00, fb->Stride());
 178
 179         surface.type = 0;
 180         surface.x = m_xres;
 181         surface.y = m_yres;
 182         surface.bpp = 32;
 183         surface.bypp = 4;
 184         surface.stride = fb->Stride();
 185         surface.data = fb->lfb;
 186         surface.offset = 0;
 187
 188         surface.data_phys = 50*1024*1024; // FIXME
 189
 190         int fb_size = surface.stride * surface.y;
 191
 192         if (fb->getNumPages() > 1)
 193         {
 194                 m_enable_double_buffering = 1;
 195                 surface_back.type = 0;
 196                 surface_back.x = m_xres;
 197                 surface_back.y = m_yres;
 198                 surface_back.bpp = 32;
 199                 surface_back.bypp = 4;
 200                 surface_back.stride = fb->Stride();
 201                 surface_back.offset = surface.y;
 202                 surface_back.data = fb->lfb + fb_size;
 203                 surface_back.data_phys = surface.data_phys + fb_size;
 204
 205                 fb_size *= 2;
 206         } else
 207                 m_enable_double_buffering = 0;
 208
 209         eDebug("%dkB available for acceleration surfaces.", (fb->Available() - fb_size)/1024);
 210         eDebug("resolution: %d x %d x %d (stride: %d)", surface.x, surface.y, surface.bpp, fb->Stride());
 211
 212         if (gAccel::getInstance())
 213                 gAccel::getInstance()->setAccelMemorySpace(fb->lfb + fb_size, surface.data_phys + fb_size, fb->Available() - fb_size);
 214
 215         if (!surface.clut.data)
 216         {
 217                 surface.clut.colors = 256;
 218                 surface.clut.data = new gRGB[surface.clut.colors];
 219                 memset(surface.clut.data, 0, sizeof(*surface.clut.data)*surface.clut.colors);
 220         }
 221
 222         surface_back.clut = surface.clut;
 223
 224         m_pixmap = new gPixmap(&surface);
 225 }
 226
 227 void gFBDC::saveSettings()
 228 {
 229 }
 230
 231 void gFBDC::reloadSettings()
 232 {
 233         alpha=255;
 234         gamma=128;
 235         brightness=128;
 236
 237         calcRamp();
 238         setPalette();
 239 }
 240
 241 // eAutoInitPtr<gFBDC> init_gFBDC(eAutoInitNumbers::graphic-1, "GFBDC");
 242 #ifndef SDLDC
 243 eAutoInitPtr<gFBDC> init_gFBDC(eAutoInitNumbers::graphic-1, "GFBDC");
 244 #endif