Showing the changes to java/pkg/com/sun/imageio/plugins/jpeg/JPEGMetadataFormat.java (1 of 18352 files). Show all
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| 1 | +/* | |
| 2 | + * Copyright (c) 2001, 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.imageio.plugins.jpeg; | |
| 27 | + | |
| 28 | +import javax.imageio.metadata.IIOMetadataFormat; | |
| 29 | +import javax.imageio.metadata.IIOMetadataFormatImpl; | |
| 30 | +import javax.imageio.ImageTypeSpecifier; | |
| 31 | +import javax.imageio.plugins.jpeg.JPEGQTable; | |
| 32 | +import javax.imageio.plugins.jpeg.JPEGHuffmanTable; | |
| 33 | + | |
| 34 | +import java.util.List; | |
| 35 | +import java.util.ArrayList; | |
| 36 | + | |
| 37 | +abstract class JPEGMetadataFormat extends IIOMetadataFormatImpl { | |
| 38 | + // 2-byte length reduces max to 65533 | |
| 39 | + private static final int MAX_JPEG_DATA_SIZE = 65533; | |
| 40 | + | |
| 41 | + String resourceBaseName = this.getClass().getName() + "Resources"; | |
| 42 | + | |
| 43 | + JPEGMetadataFormat(String formatName, int childPolicy) { | |
| 44 | + super(formatName, childPolicy); | |
| 45 | + setResourceBaseName(resourceBaseName); | |
| 46 | + } | |
| 47 | + | |
| 48 | + // Format shared between image and stream formats | |
| 49 | + void addStreamElements(String parentName) { | |
| 50 | + addElement("dqt", parentName, 1, 4); | |
| 51 | + | |
| 52 | + addElement("dqtable", "dqt", CHILD_POLICY_EMPTY); | |
| 53 | + | |
| 54 | + addAttribute("dqtable", | |
| 55 | + "elementPrecision", | |
| 56 | + DATATYPE_INTEGER, | |
| 57 | + false, | |
| 58 | + "0"); | |
| 59 | + List tabids = new ArrayList(); | |
| 60 | + tabids.add("0"); | |
| 61 | + tabids.add("1"); | |
| 62 | + tabids.add("2"); | |
| 63 | + tabids.add("3"); | |
| 64 | + addAttribute("dqtable", | |
| 65 | + "qtableId", | |
| 66 | + DATATYPE_INTEGER, | |
| 67 | + true, | |
| 68 | + null, | |
| 69 | + tabids); | |
| 70 | + addObjectValue("dqtable", | |
| 71 | + JPEGQTable.class, | |
| 72 | + true, | |
| 73 | + null); | |
| 74 | + | |
| 75 | + addElement("dht", parentName, 1, 4); | |
| 76 | + addElement("dhtable", "dht", CHILD_POLICY_EMPTY); | |
| 77 | + List classes = new ArrayList(); | |
| 78 | + classes.add("0"); | |
| 79 | + classes.add("1"); | |
| 80 | + addAttribute("dhtable", | |
| 81 | + "class", | |
| 82 | + DATATYPE_INTEGER, | |
| 83 | + true, | |
| 84 | + null, | |
| 85 | + classes); | |
| 86 | + addAttribute("dhtable", | |
| 87 | + "htableId", | |
| 88 | + DATATYPE_INTEGER, | |
| 89 | + true, | |
| 90 | + null, | |
| 91 | + tabids); | |
| 92 | + addObjectValue("dhtable", | |
| 93 | + JPEGHuffmanTable.class, | |
| 94 | + true, | |
| 95 | + null); | |
| 96 | + | |
| 97 | + | |
| 98 | + addElement("dri", parentName, CHILD_POLICY_EMPTY); | |
| 99 | + addAttribute("dri", | |
| 100 | + "interval", | |
| 101 | + DATATYPE_INTEGER, | |
| 102 | + true, | |
| 103 | + null, | |
| 104 | + "0", "65535", | |
| 105 | + true, true); | |
| 106 | + | |
| 107 | + addElement("com", parentName, CHILD_POLICY_EMPTY); | |
| 108 | + addAttribute("com", | |
| 109 | + "comment", | |
| 110 | + DATATYPE_STRING, | |
| 111 | + false, | |
| 112 | + null); | |
| 113 | + addObjectValue("com", byte[].class, 1, MAX_JPEG_DATA_SIZE); | |
| 114 | + | |
| 115 | + addElement("unknown", parentName, CHILD_POLICY_EMPTY); | |
| 116 | + addAttribute("unknown", | |
| 117 | + "MarkerTag", | |
| 118 | + DATATYPE_INTEGER, | |
| 119 | + true, | |
| 120 | + null, | |
| 121 | + "0", "255", | |
| 122 | + true, true); | |
| 123 | + addObjectValue("unknown", byte[].class, 1, MAX_JPEG_DATA_SIZE); | |
| 124 | + } | |
| 125 | + | |
| 126 | + public boolean canNodeAppear(String elementName, | |
| 127 | + ImageTypeSpecifier imageType) { | |
| 128 | + // Just check if it appears in the format | |
| 129 | + if (isInSubtree(elementName, getRootName())){ | |
| 130 | + return true; | |
| 131 | + } | |
| 132 | + return false; | |
| 133 | + } | |
| 134 | + | |
| 135 | + /** | |
| 136 | + * Returns <code>true</code> if the named element occurs in the | |
| 137 | + * subtree of the format starting with the node named by | |
| 138 | + * <code>subtreeName</code>, including the node | |
| 139 | + * itself. <code>subtreeName</code> may be any node in | |
| 140 | + * the format. If it is not, an | |
| 141 | + * <code>IllegalArgumentException</code> is thrown. | |
| 142 | + */ | |
| 143 | + protected boolean isInSubtree(String elementName, | |
| 144 | + String subtreeName) { | |
| 145 | + if (elementName.equals(subtreeName)) { | |
| 146 | + return true; | |
| 147 | + } | |
| 148 | + String [] children = getChildNames(elementName); | |
| 149 | + for (int i=0; i < children.length; i++) { | |
| 150 | + if (isInSubtree(elementName, children[i])) { | |
| 151 | + return true; | |
| 152 | + } | |
| 153 | + } | |
| 154 | + return false; | |
| 155 | + } | |
| 156 | + | |
| 157 | +} | |