+/**
+ * @brief Get whether the commit-per-vblank functionality is enabled or not for the output.
+ * @param[in] output An output the functionality has to be checked for
+ * @return -1 if error occurred, 1 if enabled, 0 if disabled.
+ */
+int
+tdm_helper_output_commit_per_vblank_enabled(tdm_output *output);
+
+/**
+ * @brief Get whether the vblank timer is expired or not for the output.
+ * @param[in] output An output the functionality has to be checked for
+ * @return -1 if error occurred, 1 if enabled, 0 if disabled.
+ */
+unsigned int
+tdm_helper_output_vblank_timer_expired(tdm_output *output);
+