001: /*
002: * $RCSfile: BMPImageReaderSpi.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: 1.3 $
042: * $Date: 2006/03/31 19:43:38 $
043: * $State: Exp $
044: */
045: package com.sun.media.imageioimpl.plugins.bmp;
046:
047: import java.util.Locale;
048: import javax.imageio.spi.ImageReaderSpi;
049: import javax.imageio.stream.ImageInputStream;
050: import javax.imageio.spi.IIORegistry;
051: import javax.imageio.spi.ServiceRegistry;
052: import java.io.IOException;
053: import javax.imageio.ImageReader;
054: import javax.imageio.IIOException;
055: import com.sun.media.imageioimpl.common.PackageUtil;
056: import com.sun.media.imageioimpl.common.ImageUtil;
057:
058: public class BMPImageReaderSpi extends ImageReaderSpi {
059:
060: private static String[] writerSpiNames = { "com.sun.media.imageioimpl.plugins.bmp.BMPImageWriterSpi" };
061: private static String[] formatNames = { "bmp", "BMP" };
062: private static String[] extensions = { "bmp" };
063: private static String[] mimeTypes = { "image/bmp", "image/x-bmp",
064: "image/x-windows-bmp" };
065: private boolean registered = false;
066:
067: public BMPImageReaderSpi() {
068: super (
069: PackageUtil.getVendor(),
070: PackageUtil.getVersion(),
071: formatNames,
072: extensions,
073: mimeTypes,
074: "com.sun.media.imageioimpl.plugins.bmp.BMPImageReader",
075: STANDARD_INPUT_TYPE,
076: writerSpiNames,
077: false,
078: null,
079: null,
080: null,
081: null,
082: true,
083: BMPMetadata.nativeMetadataFormatName,
084: "com.sun.media.imageioimpl.plugins.bmp.BMPMetadataFormat",
085: null, null);
086: }
087:
088: public void onRegistration(ServiceRegistry registry, Class category) {
089: if (registered) {
090: return;
091: }
092: registered = true;
093:
094: // By JDK 1.7, the BMPImageReader will have been in JDK core for
095: // atleast two FCS releases, so we can set JIIO's to lower priority
096: // With JDK 1.8, we can entirely de-register the JIIO one
097: ImageUtil.processOnRegistration(registry, category, "BMP",
098: this , 8, 7); // JDK version 1.8, 1.7
099: }
100:
101: public String getDescription(Locale locale) {
102: String desc = PackageUtil.getSpecificationTitle()
103: + " BMP Image Reader";
104: return desc;
105: }
106:
107: public boolean canDecodeInput(Object source) throws IOException {
108: if (!(source instanceof ImageInputStream)) {
109: return false;
110: }
111:
112: ImageInputStream stream = (ImageInputStream) source;
113: byte[] b = new byte[2];
114: stream.mark();
115: stream.readFully(b);
116: stream.reset();
117:
118: return (b[0] == 0x42) && (b[1] == 0x4d);
119: }
120:
121: public ImageReader createReaderInstance(Object extension)
122: throws IIOException {
123: return new BMPImageReader(this);
124: }
125: }
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