opensles: implement drain with msleep

modules/audio_output/opensles_android.c

@@ -115,11 +115,17 @@ static void Clean( aout_sys_t *p_sys )
     free( p_sys );
 }
 
-static void Flush(audio_output_t *p_aout, bool wait)
+static void Flush(audio_output_t *p_aout, bool drain)
 {
-    (void)wait; /* FIXME */
     aout_sys_t *p_sys = p_aout->sys;
 
+    if (drain) {
+        mtime_t delay;
+        vlc_mutex_lock( &p_sys->lock );
+        delay = p_sys->length;
+        vlc_mutex_unlock( &p_sys->lock );
+        msleep(delay);
+    } else {
         vlc_mutex_lock( &p_sys->lock );
         SetPlayState( p_sys->playerPlay, SL_PLAYSTATE_STOPPED );
         Clear( p_sys->playerBufferQueue );
@@ -129,6 +135,7 @@ static void Flush(audio_output_t *p_aout, bool wait)
         p_sys->pp_last = &p_sys->p_chain;
         p_sys->length = 0;
         vlc_mutex_unlock( &p_sys->lock );
+    }
 }
 
 static void Pause(audio_output_t *p_aout, bool pause, mtime_t date)