1 /* 2 * Copyright (c) 2007, 2015, Oracle and/or its affiliates. All rights reserved. 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. 4 * 5 * This code is free software; you can redistribute it and/or modify it 6 * under the terms of the GNU General Public License version 2 only, as 7 * published by the Free Software Foundation. Oracle designates this 8 * particular file as subject to the "Classpath" exception as provided 9 * by Oracle in the LICENSE file that accompanied this code. 10 * 11 * This code is distributed in the hope that it will be useful, but WITHOUT 12 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 13 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 14 * version 2 for more details (a copy is included in the LICENSE file that 15 * accompanied this code). 16 * 17 * You should have received a copy of the GNU General Public License version 18 * 2 along with this work; if not, write to the Free Software Foundation, 19 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. 20 * 21 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA 22 * or visit www.oracle.com if you need additional information or have any 23 * questions. 24 */ 25 26 package com.sun.media.sound; 27 28 import java.io.BufferedReader; 29 import java.io.File; 30 import java.io.IOException; 31 import java.io.InputStream; 32 import java.io.InputStreamReader; 33 import java.net.URL; 34 import java.net.URLClassLoader; 35 import java.util.ArrayList; 36 import java.util.Objects; 37 38 import javax.sound.midi.InvalidMidiDataException; 39 import javax.sound.midi.Soundbank; 40 import javax.sound.midi.spi.SoundbankReader; 41 42 import sun.reflect.misc.ReflectUtil; 43 44 /** 45 * JarSoundbankReader is used to read soundbank object from jar files. 46 * 47 * @author Karl Helgason 48 */ 49 public final class JARSoundbankReader extends SoundbankReader { 50 51 private static boolean isZIP(URL url) { 52 boolean ok = false; 53 try { 54 InputStream stream = url.openStream(); 55 try { 56 byte[] buff = new byte[4]; 57 ok = stream.read(buff) == 4; 58 if (ok) { 59 ok = (buff[0] == 0x50 60 && buff[1] == 0x4b 61 && buff[2] == 0x03 62 && buff[3] == 0x04); 63 } 64 } finally { 65 stream.close(); 66 } 67 } catch (IOException e) { 68 } 69 return ok; 70 } 71 72 @Override 73 public Soundbank getSoundbank(URL url) 74 throws InvalidMidiDataException, IOException { 75 if (!isZIP(url)) 76 return null; 77 ArrayList<Soundbank> soundbanks = new ArrayList<>(); 78 URLClassLoader ucl = URLClassLoader.newInstance(new URL[]{url}); 79 InputStream stream = ucl.getResourceAsStream( 80 "META-INF/services/javax.sound.midi.Soundbank"); 81 if (stream == null) 82 return null; 83 try 84 { 85 BufferedReader r = new BufferedReader(new InputStreamReader(stream)); 86 String line = r.readLine(); 87 while (line != null) { 88 if (!line.startsWith("#")) { 89 try { 90 Class<?> c = Class.forName(line.trim(), false, ucl); 91 if (Soundbank.class.isAssignableFrom(c)) { 92 ReflectUtil.checkPackageAccess(c); 93 Object o = c.newInstance(); 94 soundbanks.add((Soundbank) o); 95 } 96 } catch (ClassNotFoundException ignored) { 97 } catch (InstantiationException ignored) { 98 } catch (IllegalAccessException ignored) { 99 } 100 } 101 line = r.readLine(); 102 } 103 } 104 finally 105 { 106 stream.close(); 107 } 108 if (soundbanks.size() == 0) 109 return null; 110 if (soundbanks.size() == 1) 111 return soundbanks.get(0); 112 SimpleSoundbank sbk = new SimpleSoundbank(); 113 for (Soundbank soundbank : soundbanks) 114 sbk.addAllInstruments(soundbank); 115 return sbk; 116 } 117 118 @Override 119 public Soundbank getSoundbank(InputStream stream) 120 throws InvalidMidiDataException, IOException { 121 Objects.requireNonNull(stream); 122 return null; 123 } 124 125 @Override 126 public Soundbank getSoundbank(File file) 127 throws InvalidMidiDataException, IOException { 128 return getSoundbank(file.toURI().toURL()); 129 } 130 }