dfb_api.c

   1 /*
   2  * dfb_api.c - api to dfb interface
   3  */
   4
   5 /* std includes */
   6 #include <stdio.h>
   7 #include <string.h>
   8 #include <unistd.h>
   9
  10 /* dfb includes */
  11 #include <directfb.h>
  12
  13 #define MY_FONT_HEIGHT 18
  14
  15 /* global stuff */
  16
  17 /* well ... */
  18 IDirectFB *dfb = NULL;
  19
  20 IDirectFBSurface *primary = NULL;
  21 IDirectFBSurface *logo = NULL;
  22 IDirectFBSurface *subsurface = NULL;
  23 IDirectFBSurface *window = NULL;
  24
  25 IDirectFBImageProvider *image_provider = NULL;
  26 IDirectFBVideoProvider *video_provider = NULL;
  27
  28 static int screen_width  = 0;
  29 static int screen_height = 0;
  30
  31 char dfb_video_dev[]="/dev/video";
  32 char text_top[]="Internet Video / Audio Conferencing";
  33 char dfb_image[]="./images/ivac_logo.png";
  34 char dfb_font[]="./fonts/decker.ttf";
  35
  36 /* small api */
  37 int dfb_init(int *argc,char **argv) {
  38  DirectFBInit(argc,&argv);
  39  DirectFBCreate(&dfb);
  40  dfb->SetCooperativeLevel(dfb,DFSCL_FULLSCREEN);
  41  return 1;
  42 }
  43
  44 int check_accel(void) {
  45  DFBCardCapabilities caps;
  46  dfb->GetCardCapabilities(dfb,&caps);
  47  return (caps.acceleration_mask);
  48 }
  49
  50 int create_primary_surface(void) {
  51  DFBSurfaceDescription desc;
  52  memset(&desc,0,sizeof(DFBSurfaceDescription));
  53  desc.flags=DSDESC_CAPS;
  54  desc.caps=DSCAPS_PRIMARY;
  55  dfb->CreateSurface(dfb,&desc,&primary);
  56  return 1;
  57 }
  58
  59 int create_image_provider(IDirectFBSurface *surface) {
  60  dfb->CreateImageProvider(dfb,dfb_image,&image_provider);
  61  image_provider->RenderTo(image_provider,surface,NULL);
  62  image_provider->Release(image_provider);
  63  return 1;
  64 }
  65
  66 int create_video_provider(IDirectFBSurface *surface) {
  67  dfb->CreateVideoProvider(dfb,dfb_video_dev,&video_provider);
  68  video_provider->PlayTo(video_provider,surface,NULL,NULL,NULL);
  69  // video_provider->Release(video_provider);
  70  return 1;
  71 }
  72
  73 int release_surface(IDirectFBSurface *surface) {
  74  surface->Release(surface);
  75  return 1;
  76 }
  77
  78 int release_dfb(void) {
  79  dfb->Release(dfb);
  80  return 1;
  81 }
  82
  83
  84 /* test api app */
  85 int main (int argc, char **argv) {
  86
  87  dfb_init(&argc,argv);
  88
  89  check_accel();
  90
  91  create_primary_surface();
  92
  93  create_image_provider(primary);
  94
  95  sleep(5);
  96
  97  release_surface(primary);
  98
  99  return 1;
 100 }