Showing the changes to java/pkg/com/sun/imageio/plugins/gif/GIFWritableStreamMetadata.java (1 of 18352 files). Show all
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| 1 | +/* | |
| 2 | + * Copyright (c) 2005, 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.gif; | |
| 27 | + | |
| 28 | +/* | |
| 29 | + * The source for this class was copied verbatim from the source for | |
| 30 | + * package com.sun.imageio.plugins.gif.GIFImageMetadata and then modified | |
| 31 | + * to make the class read-write capable. | |
| 32 | + */ | |
| 33 | + | |
| 34 | +import javax.imageio.ImageTypeSpecifier; | |
| 35 | +import javax.imageio.metadata.IIOInvalidTreeException; | |
| 36 | +import javax.imageio.metadata.IIOMetadata; | |
| 37 | +import javax.imageio.metadata.IIOMetadataNode; | |
| 38 | +import javax.imageio.metadata.IIOMetadataFormat; | |
| 39 | +import javax.imageio.metadata.IIOMetadataFormatImpl; | |
| 40 | +import org.w3c.dom.Node; | |
| 41 | + | |
| 42 | +class GIFWritableStreamMetadata extends GIFStreamMetadata { | |
| 43 | + | |
| 44 | + // package scope | |
| 45 | + static final String | |
| 46 | + NATIVE_FORMAT_NAME = "javax_imageio_gif_stream_1.0"; | |
| 47 | + | |
| 48 | + public GIFWritableStreamMetadata() { | |
| 49 | + super(true, | |
| 50 | + NATIVE_FORMAT_NAME, | |
| 51 | + "com.sun.imageio.plugins.gif.GIFStreamMetadataFormat", // XXX J2SE | |
| 52 | + null, null); | |
| 53 | + | |
| 54 | + // initialize metadata fields by default values | |
| 55 | + reset(); | |
| 56 | + } | |
| 57 | + | |
| 58 | + public boolean isReadOnly() { | |
| 59 | + return false; | |
| 60 | + } | |
| 61 | + | |
| 62 | + public void mergeTree(String formatName, Node root) | |
| 63 | + throws IIOInvalidTreeException { | |
| 64 | + if (formatName.equals(nativeMetadataFormatName)) { | |
| 65 | + if (root == null) { | |
| 66 | + throw new IllegalArgumentException("root == null!"); | |
| 67 | + } | |
| 68 | + mergeNativeTree(root); | |
| 69 | + } else if (formatName.equals | |
| 70 | + (IIOMetadataFormatImpl.standardMetadataFormatName)) { | |
| 71 | + if (root == null) { | |
| 72 | + throw new IllegalArgumentException("root == null!"); | |
| 73 | + } | |
| 74 | + mergeStandardTree(root); | |
| 75 | + } else { | |
| 76 | + throw new IllegalArgumentException("Not a recognized format!"); | |
| 77 | + } | |
| 78 | + } | |
| 79 | + | |
| 80 | + public void reset() { | |
| 81 | + version = null; | |
| 82 | + | |
| 83 | + logicalScreenWidth = UNDEFINED_INTEGER_VALUE; | |
| 84 | + logicalScreenHeight = UNDEFINED_INTEGER_VALUE; | |
| 85 | + colorResolution = UNDEFINED_INTEGER_VALUE; | |
| 86 | + pixelAspectRatio = 0; | |
| 87 | + | |
| 88 | + backgroundColorIndex = 0; | |
| 89 | + sortFlag = false; | |
| 90 | + globalColorTable = null; | |
| 91 | + } | |
| 92 | + | |
| 93 | + protected void mergeNativeTree(Node root) throws IIOInvalidTreeException { | |
| 94 | + Node node = root; | |
| 95 | + if (!node.getNodeName().equals(nativeMetadataFormatName)) { | |
| 96 | + fatal(node, "Root must be " + nativeMetadataFormatName); | |
| 97 | + } | |
| 98 | + | |
| 99 | + node = node.getFirstChild(); | |
| 100 | + while (node != null) { | |
| 101 | + String name = node.getNodeName(); | |
| 102 | + | |
| 103 | + if (name.equals("Version")) { | |
| 104 | + version = getStringAttribute(node, "value", null, | |
| 105 | + true, versionStrings); | |
| 106 | + } else if (name.equals("LogicalScreenDescriptor")) { | |
| 107 | + /* NB: At the moment we use empty strings to support undefined | |
| 108 | + * integer values in tree representation. | |
| 109 | + * We need to add better support for undefined/default values | |
| 110 | + * later. | |
| 111 | + */ | |
| 112 | + logicalScreenWidth = getIntAttribute(node, | |
| 113 | + "logicalScreenWidth", | |
| 114 | + UNDEFINED_INTEGER_VALUE, | |
| 115 | + true, | |
| 116 | + true, 1, 65535); | |
| 117 | + | |
| 118 | + logicalScreenHeight = getIntAttribute(node, | |
| 119 | + "logicalScreenHeight", | |
| 120 | + UNDEFINED_INTEGER_VALUE, | |
| 121 | + true, | |
| 122 | + true, 1, 65535); | |
| 123 | + | |
| 124 | + colorResolution = getIntAttribute(node, | |
| 125 | + "colorResolution", | |
| 126 | + UNDEFINED_INTEGER_VALUE, | |
| 127 | + true, | |
| 128 | + true, 1, 8); | |
| 129 | + | |
| 130 | + pixelAspectRatio = getIntAttribute(node, | |
| 131 | + "pixelAspectRatio", | |
| 132 | + 0, true, | |
| 133 | + true, 0, 255); | |
| 134 | + } else if (name.equals("GlobalColorTable")) { | |
| 135 | + int sizeOfGlobalColorTable = | |
| 136 | + getIntAttribute(node, "sizeOfGlobalColorTable", | |
| 137 | + true, 2, 256); | |
| 138 | + if (sizeOfGlobalColorTable != 2 && | |
| 139 | + sizeOfGlobalColorTable != 4 && | |
| 140 | + sizeOfGlobalColorTable != 8 && | |
| 141 | + sizeOfGlobalColorTable != 16 && | |
| 142 | + sizeOfGlobalColorTable != 32 && | |
| 143 | + sizeOfGlobalColorTable != 64 && | |
| 144 | + sizeOfGlobalColorTable != 128 && | |
| 145 | + sizeOfGlobalColorTable != 256) { | |
| 146 | + fatal(node, | |
| 147 | + "Bad value for GlobalColorTable attribute sizeOfGlobalColorTable!"); | |
| 148 | + } | |
| 149 | + | |
| 150 | + backgroundColorIndex = getIntAttribute(node, | |
| 151 | + "backgroundColorIndex", | |
| 152 | + 0, true, | |
| 153 | + true, 0, 255); | |
| 154 | + | |
| 155 | + sortFlag = getBooleanAttribute(node, "sortFlag", false, true); | |
| 156 | + | |
| 157 | + globalColorTable = getColorTable(node, "ColorTableEntry", | |
| 158 | + true, sizeOfGlobalColorTable); | |
| 159 | + } else { | |
| 160 | + fatal(node, "Unknown child of root node!"); | |
| 161 | + } | |
| 162 | + | |
| 163 | + node = node.getNextSibling(); | |
| 164 | + } | |
| 165 | + } | |
| 166 | + | |
| 167 | + protected void mergeStandardTree(Node root) | |
| 168 | + throws IIOInvalidTreeException { | |
| 169 | + Node node = root; | |
| 170 | + if (!node.getNodeName() | |
| 171 | + .equals(IIOMetadataFormatImpl.standardMetadataFormatName)) { | |
| 172 | + fatal(node, "Root must be " + | |
| 173 | + IIOMetadataFormatImpl.standardMetadataFormatName); | |
| 174 | + } | |
| 175 | + | |
| 176 | + node = node.getFirstChild(); | |
| 177 | + while (node != null) { | |
| 178 | + String name = node.getNodeName(); | |
| 179 | + | |
| 180 | + if (name.equals("Chroma")) { | |
| 181 | + Node childNode = node.getFirstChild(); | |
| 182 | + while(childNode != null) { | |
| 183 | + String childName = childNode.getNodeName(); | |
| 184 | + if (childName.equals("Palette")) { | |
| 185 | + globalColorTable = getColorTable(childNode, | |
| 186 | + "PaletteEntry", | |
| 187 | + false, -1); | |
| 188 | + | |
| 189 | + } else if (childName.equals("BackgroundIndex")) { | |
| 190 | + backgroundColorIndex = getIntAttribute(childNode, | |
| 191 | + "value", | |
| 192 | + -1, true, | |
| 193 | + true, 0, 255); | |
| 194 | + } | |
| 195 | + childNode = childNode.getNextSibling(); | |
| 196 | + } | |
| 197 | + } else if (name.equals("Data")) { | |
| 198 | + Node childNode = node.getFirstChild(); | |
| 199 | + while(childNode != null) { | |
| 200 | + String childName = childNode.getNodeName(); | |
| 201 | + if (childName.equals("BitsPerSample")) { | |
| 202 | + colorResolution = getIntAttribute(childNode, | |
| 203 | + "value", | |
| 204 | + -1, true, | |
| 205 | + true, 1, 8); | |
| 206 | + break; | |
| 207 | + } | |
| 208 | + childNode = childNode.getNextSibling(); | |
| 209 | + } | |
| 210 | + } else if (name.equals("Dimension")) { | |
| 211 | + Node childNode = node.getFirstChild(); | |
| 212 | + while(childNode != null) { | |
| 213 | + String childName = childNode.getNodeName(); | |
| 214 | + if (childName.equals("PixelAspectRatio")) { | |
| 215 | + float aspectRatio = getFloatAttribute(childNode, | |
| 216 | + "value"); | |
| 217 | + if (aspectRatio == 1.0F) { | |
| 218 | + pixelAspectRatio = 0; | |
| 219 | + } else { | |
| 220 | + int ratio = (int)(aspectRatio*64.0F - 15.0F); | |
| 221 | + pixelAspectRatio = | |
| 222 | + Math.max(Math.min(ratio, 255), 0); | |
| 223 | + } | |
| 224 | + } else if (childName.equals("HorizontalScreenSize")) { | |
| 225 | + logicalScreenWidth = getIntAttribute(childNode, | |
| 226 | + "value", | |
| 227 | + -1, true, | |
| 228 | + true, 1, 65535); | |
| 229 | + } else if (childName.equals("VerticalScreenSize")) { | |
| 230 | + logicalScreenHeight = getIntAttribute(childNode, | |
| 231 | + "value", | |
| 232 | + -1, true, | |
| 233 | + true, 1, 65535); | |
| 234 | + } | |
| 235 | + childNode = childNode.getNextSibling(); | |
| 236 | + } | |
| 237 | + } else if (name.equals("Document")) { | |
| 238 | + Node childNode = node.getFirstChild(); | |
| 239 | + while(childNode != null) { | |
| 240 | + String childName = childNode.getNodeName(); | |
| 241 | + if (childName.equals("FormatVersion")) { | |
| 242 | + String formatVersion = | |
| 243 | + getStringAttribute(childNode, "value", null, | |
| 244 | + true, null); | |
| 245 | + for (int i = 0; i < versionStrings.length; i++) { | |
| 246 | + if (formatVersion.equals(versionStrings[i])) { | |
| 247 | + version = formatVersion; | |
| 248 | + break; | |
| 249 | + } | |
| 250 | + } | |
| 251 | + break; | |
| 252 | + } | |
| 253 | + childNode = childNode.getNextSibling(); | |
| 254 | + } | |
| 255 | + } | |
| 256 | + | |
| 257 | + node = node.getNextSibling(); | |
| 258 | + } | |
| 259 | + } | |
| 260 | + | |
| 261 | + public void setFromTree(String formatName, Node root) | |
| 262 | + throws IIOInvalidTreeException | |
| 263 | + { | |
| 264 | + reset(); | |
| 265 | + mergeTree(formatName, root); | |
| 266 | + } | |
| 267 | +} | |