rev 9343 : 8033716: Fix raw and unchecked lint warnings in com.sun.imageio
Reviewed-by: darcy, prr, bae

   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 }
--- EOF ---