1.1 --- a/lib/display.c	Fri Nov 09 21:05:06 2018 +0100
     1.2 +++ b/lib/display.c	Fri Nov 09 22:50:30 2018 +0100
     1.3 @@ -117,6 +117,13 @@
     1.4      init_display_properties(cfg);
     1.5  }
     1.6  
     1.7 +/* Select the next available frame in the framebuffer. */
     1.8 +
     1.9 +void display_select_next_frame(display_config_t *cfg)
    1.10 +{
    1.11 +    display_select_frame(cfg, wrap_value(cfg->frame + 1, cfg->frames));
    1.12 +}
    1.13 +
    1.14  /* Set the number of frames in the framebuffer memory. */
    1.15  
    1.16  void display_set_frames(display_config_t *cfg, int frames)