001/* 002 * MIT License 003 * 004 * Copyright (c) PhotonVision 005 * 006 * Permission is hereby granted, free of charge, to any person obtaining a copy 007 * of this software and associated documentation files (the "Software"), to deal 008 * in the Software without restriction, including without limitation the rights 009 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell 010 * copies of the Software, and to permit persons to whom the Software is 011 * furnished to do so, subject to the following conditions: 012 * 013 * The above copyright notice and this permission notice shall be included in all 014 * copies or substantial portions of the Software. 015 * 016 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR 017 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 018 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE 019 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER 020 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, 021 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE 022 * SOFTWARE. 023 */ 024 025package org.photonvision.timesync; 026 027import edu.wpi.first.util.RuntimeLoader; 028import java.io.IOException; 029import org.photonvision.jni.TimeSyncServer; 030 031/** Helper to hold a single TimeSyncServer instance with some default config */ 032public class TimeSyncSingleton { 033 private static TimeSyncServer INSTANCE = null; 034 035 private TimeSyncSingleton() {} 036 037 public static boolean load() { 038 if (INSTANCE == null) { 039 try { 040 RuntimeLoader.loadLibrary("photontargetingJNI"); 041 } catch (IOException e) { 042 // Don't want to return early. We want to create the TimeSyncServer so the program crashes 043 // because we need it in order to function. 044 e.printStackTrace(); 045 } 046 047 INSTANCE = new TimeSyncServer(5810); 048 INSTANCE.start(); 049 } 050 051 return INSTANCE != null; 052 } 053}