Exemplo n.º 1
0
void osd_init(struct osd_t* osd)
{
  uint32_t display_width, display_height;
  char str[2] = { 0, 0 };
  uint32_t width, height;
  int n;
  int s;

  s = gx_graphics_init(tiresias_pcfont, sizeof(tiresias_pcfont));
  assert(s == 0);

  s = graphics_get_display_size(0, &display_width, &display_height);
  osd->display_width = display_width;
  osd->display_height = display_height;

  printf("osd_init: %d %d\n", display_width, display_height);
  
  assert(s == 0);
  //fprintf(stderr,"Display width=%d, height=%d\n",display_width,display_height);

  /* The main OSD image */
  s = gx_create_window(SCREEN, display_width, display_height, GRAPHICS_RESOURCE_RGBA32, &osd->img);
  assert(s == 0);
  graphics_resource_fill(osd->img, 0, 0, display_width, display_height, GRAPHICS_RGBA32(0,0,0,0));

  graphics_display_resource(osd->img, 0, OSD_LAYER, 0, 0, GRAPHICS_RESOURCE_WIDTH, GRAPHICS_RESOURCE_HEIGHT, VC_DISPMAN_ROT0, 1);

  /* A full-screen black image to either remove any left-over console text (BG_LAYER) or to hide the video (FG_LAYER) */
  s = gx_create_window(SCREEN, display_width, display_height, GRAPHICS_RESOURCE_RGBA32, &osd->img_blank);
  assert(s == 0);
  graphics_resource_fill(osd->img_blank, 0, 0, display_width, display_height, GRAPHICS_RGBA32(0,0,0,255));

  graphics_display_resource(osd->img_blank, 0, BG_LAYER, 0, 0, GRAPHICS_RESOURCE_WIDTH, GRAPHICS_RESOURCE_HEIGHT, VC_DISPMAN_ROT0, 1);

  osd->video_blanked = 0;
  osd->osd_cleartime = 0.0;
  osd->last_now = time(NULL);
  
  pthread_mutex_init(&osd->osd_mutex,NULL);
   
  // cache font widths since graphics_resource_text_dimensions_ext is kind of slow
  for (n = 32; n < 256; n++) {
    str[0] = n;
    graphics_resource_text_dimensions_ext(osd->img, str, 1, &width, &height, 40); 
    fontWidth[n] = (uint8_t)width;
  }
    
  (void)s; // remove compiler warning
}
Exemplo n.º 2
0
int main(void)
{
   GRAPHICS_RESOURCE_HANDLE img;
   uint32_t width, height;
   int LAYER=1;
   bcm_host_init();
   int s;

   s = gx_graphics_init(".");
   assert(s == 0);

   s = graphics_get_display_size(0, &width, &height);
   assert(s == 0);

   s = gx_create_window(0, width, height, GRAPHICS_RESOURCE_RGBA32, &img);
   assert(s == 0);

   // transparent before display to avoid screen flash
   graphics_resource_fill(img, 0, 0, width, height, GRAPHICS_RGBA32(0,0,0,0x00));

   graphics_display_resource(img, 0, LAYER, 0, 0, GRAPHICS_RESOURCE_WIDTH, GRAPHICS_RESOURCE_HEIGHT, VC_DISPMAN_ROT0, 1);

   uint32_t text_size = 10;
   while (1) {
      const char *text = "The quick brown fox jumps over the lazy dog";
      uint32_t y_offset = height-60+text_size/2;
      graphics_resource_fill(img, 0, 0, width, height, GRAPHICS_RGBA32(0,0,0,0x00));
      // blue, at the top (y=40)
      graphics_resource_fill(img, 0, 40, width, 1, GRAPHICS_RGBA32(0,0,0xff,0xff));

      // green, at the bottom (y=height-40)
      graphics_resource_fill(img, 0, height-40, width, 1, GRAPHICS_RGBA32(0,0xff,0,0xff));

      // draw the subtitle text
      render_subtitle(img, text, 0, text_size,  y_offset);
      graphics_update_displayed_resource(img, 0, 0, 0, 0);
      text_size += 1;
      if (text_size > 50)
         text_size = 10;
   }

   graphics_display_resource(img, 0, LAYER, 0, 0, GRAPHICS_RESOURCE_WIDTH, GRAPHICS_RESOURCE_HEIGHT, VC_DISPMAN_ROT0, 0);
   graphics_delete_resource(img);

   return 0;
}