+mtime_t input_clock_GetJitter( input_clock_t *cl )
+{
+ vlc_mutex_lock( &cl->lock );
+
+#if INPUT_CLOCK_LATE_COUNT != 3
+# error "unsupported INPUT_CLOCK_LATE_COUNT"
+#endif
+ /* Find the median of the last late values
+ * It works pretty well at rejecting bad values
+ *
+ * XXX we only increase pts_delay over time, decreasing it is
+ * not that easy if we want to be robust.
+ */
+ const mtime_t *p = cl->late.pi_value;
+ mtime_t i_late_median = p[0] + p[1] + p[2] - __MIN(__MIN(p[0],p[1]),p[2]) - __MAX(__MAX(p[0],p[1]),p[2]);
+ mtime_t i_pts_delay = cl->i_pts_delay ;
+
+ vlc_mutex_unlock( &cl->lock );
+
+ return i_pts_delay + i_late_median;
+}
+