dfb_api.c

   1 /*
   2  * dfb_api.c - api to dfb interface
   3  */
   4
   5 /* std includes */
   6 #include <stdio.h>
   7 #include <unistd.h>
   8
   9 /* dfb includes */
  10 #include <directfb.h>
  11
  12 /* global stuff */
  13
  14 /* well ... */
  15 static IDirectFB *dfb = NULL;
  16 /* surface */
  17 static IDirectFBSurface *primary = NULL;
  18 static int screen_width  = 0;
  19 static int screen_height = 0;
  20 static IDirectFBSurface *logo = NULL;
  21 /* image to load */
  22 char dfb_image[]="./images/ivac_logo.png";
  23
  24 int main (int argc, char **argv) {
  25   int i;
  26   DFBSurfaceDescription dsc;
  27   /* image provider */
  28   IDirectFBImageProvider *provider;
  29
  30   /* init */
  31   DirectFBInit (&argc, &argv);
  32   DirectFBCreate (&dfb);
  33   dfb->SetCooperativeLevel (dfb, DFSCL_FULLSCREEN);
  34   dsc.flags=DSDESC_CAPS;
  35   dsc.caps=DSCAPS_PRIMARY | DSCAPS_FLIPPING;
  36   dfb->CreateSurface(dfb,&dsc,&primary);
  37   primary->GetSize(primary,&screen_width,&screen_height);
  38   printf("debug: w/h = %d / %d\n",screen_width,screen_height);
  39
  40   /* create the imag provider */
  41   dfb->CreateImageProvider(dfb,dfb_image,&provider);
  42   /* get image/provider description */
  43   provider->GetSurfaceDescription(provider,&dsc);
  44   printf("debug: w/h %d / %d\n",dsc.width,dsc.height);
  45   /* create apropriate surface */
  46   dfb->CreateSurface(dfb,&dsc,&logo);
  47   /* render image */
  48   provider->RenderTo(provider,logo,NULL);
  49
  50   provider->Release(provider);
  51
  52   /* slide logo */
  53   for(i = -dsc.width; i < screen_width; i++) {
  54       /* clear screen */
  55       primary->FillRectangle(primary,0,0,screen_width,screen_height);
  56
  57       /* blit image */
  58       primary->Blit(primary,logo,NULL,i,(screen_height-dsc.height)/2);
  59
  60       /* flip */
  61       primary->Flip(primary,NULL,DSFLIP_WAITFORSYNC);
  62     }
  63
  64   /* release image */
  65   logo->Release(logo);
  66
  67   primary->Release(primary);
  68   dfb->Release(dfb);
  69
  70   return 23;
  71 }
  72