001: /*
002: * $RCSfile: TIFFImageReaderSpi.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: 1.2 $
042: * $Date: 2006/03/31 19:43:41 $
043: * $State: Exp $
044: */
045: package com.sun.media.imageioimpl.plugins.tiff;
046:
047: import java.io.IOException;
048: import java.util.Locale;
049: import javax.imageio.ImageReader;
050: import javax.imageio.spi.ImageReaderSpi;
051: import javax.imageio.spi.ServiceRegistry;
052: import javax.imageio.stream.ImageInputStream;
053: import com.sun.media.imageioimpl.common.PackageUtil;
054:
055: public class TIFFImageReaderSpi extends ImageReaderSpi {
056:
057: private static final String[] names = { "tif", "TIF", "tiff",
058: "TIFF" };
059:
060: private static final String[] suffixes = { "tif", "tiff" };
061:
062: private static final String[] MIMETypes = { "image/tiff" };
063:
064: private static final String readerClassName = "com.sun.media.imageioimpl.plugins.tiff.TIFFImageReader";
065:
066: private static final String[] writerSpiNames = { "com.sun.media.imageioimpl.plugins.tiff.TIFFImageWriterSpi" };
067:
068: private boolean registered = false;
069:
070: public TIFFImageReaderSpi() {
071: super (
072: PackageUtil.getVendor(),
073: PackageUtil.getVersion(),
074: names,
075: suffixes,
076: MIMETypes,
077: readerClassName,
078: STANDARD_INPUT_TYPE,
079: writerSpiNames,
080: false,
081: TIFFStreamMetadata.nativeMetadataFormatName,
082: "com.sun.media.imageioimpl.plugins.tiff.TIFFStreamMetadataFormat",
083: null,
084: null,
085: true,
086: TIFFImageMetadata.nativeMetadataFormatName,
087: "com.sun.media.imageioimpl.plugins.tiff.TIFFImageMetadataFormat",
088: null, null);
089: }
090:
091: public String getDescription(Locale locale) {
092: String desc = PackageUtil.getSpecificationTitle()
093: + " TIFF Image Reader";
094: return desc;
095: }
096:
097: public boolean canDecodeInput(Object input) throws IOException {
098: if (!(input instanceof ImageInputStream)) {
099: return false;
100: }
101:
102: ImageInputStream stream = (ImageInputStream) input;
103: byte[] b = new byte[4];
104: stream.mark();
105: stream.readFully(b);
106: stream.reset();
107:
108: return ((b[0] == (byte) 0x49 && b[1] == (byte) 0x49
109: && b[2] == (byte) 0x2a && b[3] == (byte) 0x00) || (b[0] == (byte) 0x4d
110: && b[1] == (byte) 0x4d && b[2] == (byte) 0x00 && b[3] == (byte) 0x2a));
111: }
112:
113: public ImageReader createReaderInstance(Object extension) {
114: return new TIFFImageReader(this );
115: }
116:
117: public void onRegistration(ServiceRegistry registry, Class category) {
118: if (registered) {
119: return;
120: }
121:
122: registered = true;
123: }
124: }
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