+ /* Stop any buffering being done, and ask if es_out has no more data to
+ * play.
+ * It will not block and so MUST be used carrefully. The only good reason
+ * is for interactive playback (like for DVD menu).
+ * XXX You SHALL call ES_OUT_RESET_PCR before any other es_out_Control/Send calls. */
+ ES_OUT_GET_EMPTY, /* arg1=bool* res=cannot fail */
+