tdm_vblank_set_offset(tdm_vblank *vblank, int offset);
tdm_error
tdm_vblank_set_enable_fake(tdm_vblank *vblank, unsigned int enable_fake);
+unsigned int
+tdm_vblank_get_enable_fake(tdm_vblank *vblank);
tdm_error
tdm_vblank_wait(tdm_vblank *vblank, unsigned int req_sec, unsigned int req_usec, unsigned int interval, tdm_vblank_handler func, void *user_data);