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 #define MY_FONT_HEIGHT 48
  13
  14 /* global stuff */
  15
  16 /* well ... */
  17 static IDirectFB *dfb = NULL;
  18 static IDirectFBSurface *primary = NULL;
  19 static int screen_width  = 0;
  20 static int screen_height = 0;
  21
  22 static IDirectFBSurface *logo = NULL;
  23
  24 static IDirectFBFont *font = NULL;
  25 static char *text_top="Internet Video / Audio Conferencing"
  26
  27 /* image to load */
  28 char dfb_image[]="./images/ivac_logo.png";
  29
  30 int main (int argc, char **argv) {
  31   int i;
  32   DFBFontDescription font_desc;
  33   DFBSurfaceDescription dsc;
  34   /* image provider */
  35   IDirectFBImageProvider *provider;
  36
  37   /* init */
  38   DirectFBInit (&argc, &argv);
  39   DirectFBCreate (&dfb);
  40   dfb->SetCooperativeLevel (dfb, DFSCL_FULLSCREEN);
  41   dsc.flags=DSDESC_CAPS;
  42   dsc.caps=DSCAPS_PRIMARY | DSCAPS_FLIPPING;
  43   dfb->CreateSurface(dfb,&dsc,&primary);
  44   primary->GetSize(primary,&screen_width,&screen_height);
  45   printf("debug: w/h = %d / %d\n",screen_width,screen_height);
  46
  47   /* create the imag provider */
  48   dfb->CreateImageProvider(dfb,dfb_image,&provider);
  49   /* get image/provider description */
  50   provider->GetSurfaceDescription(provider,&dsc);
  51   printf("debug: w/h %d / %d\n",dsc.width,dsc.height);
  52   /* create apropriate surface */
  53   dfb->CreateSurface(dfb,&dsc,&logo);
  54   /* render image */
  55   provider->RenderTo(provider,logo,NULL);
  56   provider->Release(provider);
  57
  58   /* create font */
  59   font_dsc.flags=DFDESC_HEIGHT;
  60   font_dsc.height=MY_FONT_HEIGHT;
  61
  62
  63
  64   /* slide logo */
  65   for(i = -dsc.width; i < screen_width; i++) {
  66       /* clear screen */
  67       primary->FillRectangle(primary,0,0,screen_width,screen_height);
  68
  69       /* blit image */
  70       primary->Blit(primary,logo,NULL,i,(screen_height-dsc.height)/2);
  71
  72       /* flip */
  73       primary->Flip(primary,NULL,DSFLIP_WAITFORSYNC);
  74     }
  75
  76   /* release image */
  77   logo->Release(logo);
  78
  79   primary->Release(primary);
  80   dfb->Release(dfb);
  81
  82   return 23;
  83 }
  84