draw.h

   1 /* fbpad's framebuffer interface */
   2 #define FBDEV           "/dev/fb0"
   3
   4 /* fb_mode() interpretation */
   5 #define FBM_BPP(m)      (((m) >> 16) & 0x0f)    /* bytes per pixel (4 bits) */
   6 #define FBM_CLR(m)      ((m) & 0x0fff)          /* bits per color (12 bits) */
   7 #define FBM_ORD(m)      (((m) >> 20) & 0x07)    /* color order (3 bits) */
   8
   9 /* main functions */
  10 int fb_init(char *dev);
  11 void fb_free(void);
  12 unsigned fb_mode(void);
  13 void *fb_mem(int r);
  14 int fb_rows(void);
  15 int fb_cols(void);
  16 void fb_cmap(void);
  17 unsigned fb_val(int r, int g, int b);