001: /*
002: * $RCSfile: GIFStreamMetadataFormat.java,v $
003: *
004: *
005: * Copyright (c) 2005 Sun Microsystems, Inc. All Rights Reserved.
006: *
007: * Redistribution and use in source and binary forms, with or without
008: * modification, are permitted provided that the following conditions
009: * are met:
010: *
011: * - Redistribution of source code must retain the above copyright
012: * notice, this list of conditions and the following disclaimer.
013: *
014: * - Redistribution in binary form must reproduce the above copyright
015: * notice, this list of conditions and the following disclaimer in
016: * the documentation and/or other materials provided with the
017: * distribution.
018: *
019: * Neither the name of Sun Microsystems, Inc. or the names of
020: * contributors may be used to endorse or promote products derived
021: * from this software without specific prior written permission.
022: *
023: * This software is provided "AS IS," without a warranty of any
024: * kind. ALL EXPRESS OR IMPLIED CONDITIONS, REPRESENTATIONS AND
025: * WARRANTIES, INCLUDING ANY IMPLIED WARRANTY OF MERCHANTABILITY,
026: * FITNESS FOR A PARTICULAR PURPOSE OR NON-INFRINGEMENT, ARE HEREBY
027: * EXCLUDED. SUN MIDROSYSTEMS, INC. ("SUN") AND ITS LICENSORS SHALL
028: * NOT BE LIABLE FOR ANY DAMAGES SUFFERED BY LICENSEE AS A RESULT OF
029: * USING, MODIFYING OR DISTRIBUTING THIS SOFTWARE OR ITS
030: * DERIVATIVES. IN NO EVENT WILL SUN OR ITS LICENSORS BE LIABLE FOR
031: * ANY LOST REVENUE, PROFIT OR DATA, OR FOR DIRECT, INDIRECT, SPECIAL,
032: * CONSEQUENTIAL, INCIDENTAL OR PUNITIVE DAMAGES, HOWEVER CAUSED AND
033: * REGARDLESS OF THE THEORY OF LIABILITY, ARISING OUT OF THE USE OF OR
034: * INABILITY TO USE THIS SOFTWARE, EVEN IF SUN HAS BEEN ADVISED OF THE
035: * POSSIBILITY OF SUCH DAMAGES.
036: *
037: * You acknowledge that this software is not designed or intended for
038: * use in the design, construction, operation or maintenance of any
039: * nuclear facility.
040: *
041: * $Revision: 1.1 $
042: * $Date: 2006/03/24 22:30:10 $
043: * $State: Exp $
044: */
045:
046: package com.sun.media.imageioimpl.plugins.gif;
047:
048: import java.util.Arrays;
049: import javax.imageio.ImageTypeSpecifier;
050: import javax.imageio.metadata.IIOMetadataFormat;
051: import javax.imageio.metadata.IIOMetadataFormatImpl;
052:
053: public class GIFStreamMetadataFormat extends IIOMetadataFormatImpl {
054:
055: private static IIOMetadataFormat instance = null;
056:
057: private GIFStreamMetadataFormat() {
058: super (GIFStreamMetadata.nativeMetadataFormatName,
059: CHILD_POLICY_SOME);
060:
061: // root -> Version
062: addElement("Version",
063: GIFStreamMetadata.nativeMetadataFormatName,
064: CHILD_POLICY_EMPTY);
065: addAttribute("Version", "value", DATATYPE_STRING, true, null,
066: Arrays.asList(GIFStreamMetadata.versionStrings));
067:
068: // root -> LogicalScreenDescriptor
069: addElement("LogicalScreenDescriptor",
070: GIFStreamMetadata.nativeMetadataFormatName,
071: CHILD_POLICY_EMPTY);
072: addAttribute("LogicalScreenDescriptor", "logicalScreenWidth",
073: DATATYPE_INTEGER, true, null, "1", "65535", true, true);
074: addAttribute("LogicalScreenDescriptor", "logicalScreenHeight",
075: DATATYPE_INTEGER, true, null, "1", "65535", true, true);
076: addAttribute("LogicalScreenDescriptor", "colorResolution",
077: DATATYPE_INTEGER, true, null, "1", "8", true, true);
078: addAttribute("LogicalScreenDescriptor", "pixelAspectRatio",
079: DATATYPE_INTEGER, true, null, "0", "255", true, true);
080:
081: // root -> GlobalColorTable
082: addElement("GlobalColorTable",
083: GIFStreamMetadata.nativeMetadataFormatName, 2, 256);
084: addAttribute("GlobalColorTable", "sizeOfGlobalColorTable",
085: DATATYPE_INTEGER, true, null, Arrays
086: .asList(GIFStreamMetadata.colorTableSizes));
087: addAttribute("GlobalColorTable", "backgroundColorIndex",
088: DATATYPE_INTEGER, true, null, "0", "255", true, true);
089: addBooleanAttribute("GlobalColorTable", "sortFlag", false,
090: false);
091:
092: // root -> GlobalColorTable -> ColorTableEntry
093: addElement("ColorTableEntry", "GlobalColorTable",
094: CHILD_POLICY_EMPTY);
095: addAttribute("ColorTableEntry", "index", DATATYPE_INTEGER,
096: true, null, "0", "255", true, true);
097: addAttribute("ColorTableEntry", "red", DATATYPE_INTEGER, true,
098: null, "0", "255", true, true);
099: addAttribute("ColorTableEntry", "green", DATATYPE_INTEGER,
100: true, null, "0", "255", true, true);
101: addAttribute("ColorTableEntry", "blue", DATATYPE_INTEGER, true,
102: null, "0", "255", true, true);
103: }
104:
105: public boolean canNodeAppear(String elementName,
106: ImageTypeSpecifier imageType) {
107: return true;
108: }
109:
110: public static synchronized IIOMetadataFormat getInstance() {
111: if (instance == null) {
112: instance = new GIFStreamMetadataFormat();
113: }
114: return instance;
115: }
116: }
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