1 /* 2 * Copyright (c) 2017 The WebRTC project authors. All Rights Reserved. 3 * 4 * Use of this source code is governed by a BSD-style license 5 * that can be found in the LICENSE file in the root of the source 6 * tree. An additional intellectual property rights grant can be found 7 * in the file PATENTS. All contributing project authors may 8 * be found in the AUTHORS file in the root of the source tree. 9 */ 10 11 package org.webrtc; 12 13 class NativeLibrary { 14 private static String TAG = "NativeLibrary"; 15 16 static class DefaultLoader implements NativeLibraryLoader { 17 @Override load(String name)18 public boolean load(String name) { 19 Logging.d(TAG, "Loading library: " + name); 20 try { 21 System.loadLibrary(name); 22 } catch (UnsatisfiedLinkError e) { 23 Logging.e(TAG, "Failed to load native library: " + name, e); 24 return false; 25 } 26 return true; 27 } 28 } 29 30 private static Object lock = new Object(); 31 private static boolean libraryLoaded; 32 33 /** 34 * Loads the native library. Clients should call PeerConnectionFactory.initialize. It will call 35 * this method for them. 36 */ initialize(NativeLibraryLoader loader, String libraryName)37 static void initialize(NativeLibraryLoader loader, String libraryName) { 38 synchronized (lock) { 39 if (libraryLoaded) { 40 Logging.d(TAG, "Native library has already been loaded."); 41 return; 42 } 43 Logging.d(TAG, "Loading native library: " + libraryName); 44 libraryLoaded = loader.load(libraryName); 45 } 46 } 47 48 /** Returns true if the library has been loaded successfully. */ isLoaded()49 static boolean isLoaded() { 50 synchronized (lock) { 51 return libraryLoaded; 52 } 53 } 54 } 55