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 | } | ||