draw.h

   1 /* framebuffer device */
   2 #define FBDEV_PATH      "/dev/fb0"
   3
   4 /* fb_mode() interpretation */
   5 #define FBM_BPP(m)      (((m) >> 16) & 0x0f)
   6 #define FBM_COLORS(m)   ((m) & 0x0fff)
   7
   8 /* main functions */
   9 int fb_init(void);
  10 void fb_free(void);
  11 unsigned fb_mode(void);
  12 void *fb_mem(int r);
  13 int fb_rows(void);
  14 int fb_cols(void);
  15 void fb_cmap(void);
  16
  17 /* helper functions */
  18 void fb_set(int r, int c, void *mem, int len);
  19 unsigned fb_val(int r, int g, int b);