/* * Copyright (c) 2000, 2010, Oracle and/or its affiliates. All rights reserved. * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. * * This code is free software; you can redistribute it and/or modify it * under the terms of the GNU General Public License version 2 only, as * published by the Free Software Foundation. Oracle designates this * particular file as subject to the "Classpath" exception as provided * by Oracle in the LICENSE file that accompanied this code. * * This code is distributed in the hope that it will be useful, but WITHOUT * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License * version 2 for more details (a copy is included in the LICENSE file that * accompanied this code). * * You should have received a copy of the GNU General Public License version * 2 along with this work; if not, write to the Free Software Foundation, * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. * * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA * or visit www.oracle.com if you need additional information or have any * questions. */package com.sun.imageio.plugins.gif;import java.io.IOException;import java.util.Locale;import java.util.Iterator;import javax.imageio.ImageReader;import javax.imageio.metadata.IIOMetadataFormat;import javax.imageio.metadata.IIOMetadataFormatImpl;import javax.imageio.spi.ImageReaderSpi;import javax.imageio.stream.ImageInputStream;public class GIFImageReaderSpi extends ImageReaderSpi { private static final String vendorName = "Oracle Corporation"; private static final String version = "1.0"; private static final String[] names = { "gif", "GIF" }; private static final String[] suffixes = { "gif" }; private static final String[] MIMETypes = { "image/gif" }; private static final String readerClassName = "com.sun.imageio.plugins.gif.GIFImageReader"; private static final String[] writerSpiNames = { "com.sun.imageio.plugins.gif.GIFImageWriterSpi" }; public GIFImageReaderSpi() { super(vendorName, version, names, suffixes, MIMETypes, readerClassName, new Class[] { ImageInputStream.class }, writerSpiNames, true, GIFStreamMetadata.nativeMetadataFormatName, "com.sun.imageio.plugins.gif.GIFStreamMetadataFormat", null, null, true, GIFImageMetadata.nativeMetadataFormatName, "com.sun.imageio.plugins.gif.GIFImageMetadataFormat", null, null ); } public String getDescription(Locale locale) { return "Standard GIF image reader"; } public boolean canDecodeInput(Object input) throws IOException { if (!(input instanceof ImageInputStream)) { return false; } ImageInputStream stream = (ImageInputStream)input; byte[] b = new byte[6]; stream.mark(); stream.readFully(b); stream.reset(); return b[0] == 'G' && b[1] == 'I' && b[2] == 'F' && b[3] == '8' && (b[4] == '7' || b[4] == '9') && b[5] == 'a'; } public ImageReader createReaderInstance(Object extension) { return new GIFImageReader(this); }}
/*
* Copyright (c) 2000, 2010, Oracle and/or its affiliates. All rights reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* This code is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License version 2 only, as
* published by the Free Software Foundation. Oracle designates this
* particular file as subject to the "Classpath" exception as provided
* by Oracle in the LICENSE file that accompanied this code.
*
* This code is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
* version 2 for more details (a copy is included in the LICENSE file that
* accompanied this code).
*
* You should have received a copy of the GNU General Public License version
* 2 along with this work; if not, write to the Free Software Foundation,
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
*
* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
* or visit www.oracle.com if you need additional information or have any
* questions.
*/
package com.sun.imageio.plugins.gif;
import java.io.IOException;
import java.util.Locale;
import java.util.Iterator;
import javax.imageio.ImageReader;
import javax.imageio.metadata.IIOMetadataFormat;
import javax.imageio.metadata.IIOMetadataFormatImpl;
import javax.imageio.spi.ImageReaderSpi;
import javax.imageio.stream.ImageInputStream;
public class GIFImageReaderSpi extends ImageReaderSpi {
private static final String vendorName = "Oracle Corporation";
private static final String version = "1.0";
private static final String[] names = { "gif", "GIF" };
private static final String[] suffixes = { "gif" };
private static final String[] MIMETypes = { "image/gif" };
private static final String readerClassName =
"com.sun.imageio.plugins.gif.GIFImageReader";
private static final String[] writerSpiNames = {
"com.sun.imageio.plugins.gif.GIFImageWriterSpi"
};
public GIFImageReaderSpi() {
super(vendorName,
version,
names,
suffixes,
MIMETypes,
readerClassName,
new Class[] { ImageInputStream.class },
writerSpiNames,
true,
GIFStreamMetadata.nativeMetadataFormatName,
"com.sun.imageio.plugins.gif.GIFStreamMetadataFormat",
null, null,
true,
GIFImageMetadata.nativeMetadataFormatName,
"com.sun.imageio.plugins.gif.GIFImageMetadataFormat",
null, null
);
}
public String getDescription(Locale locale) {
return "Standard GIF image reader";
}
public boolean canDecodeInput(Object input) throws IOException {
if (!(input instanceof ImageInputStream)) {
return false;
}
ImageInputStream stream = (ImageInputStream)input;
byte[] b = new byte[6];
stream.mark();
stream.readFully(b);
stream.reset();
return b[0] == 'G' && b[1] == 'I' && b[2] == 'F' && b[3] == '8' &&
(b[4] == '7' || b[4] == '9') && b[5] == 'a';
}
public ImageReader createReaderInstance(Object extension) {
return new GIFImageReader(this);
}
}