mirror of git://gcc.gnu.org/git/gcc.git
125 lines
4.5 KiB
Java
125 lines
4.5 KiB
Java
/* GIFImageReaderSpi.java --
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Copyright (C) 2006 Free Software Foundation, Inc.
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This file is part of GNU Classpath.
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GNU Classpath is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2, or (at your option)
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any later version.
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GNU Classpath is distributed in the hope that it will be useful, but
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WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with GNU Classpath; see the file COPYING. If not, write to the
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Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
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02110-1301 USA.
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Linking this library statically or dynamically with other modules is
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making a combined work based on this library. Thus, the terms and
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conditions of the GNU General Public License cover the whole
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combination.
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As a special exception, the copyright holders of this library give you
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permission to link this library with independent modules to produce an
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executable, regardless of the license terms of these independent
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modules, and to copy and distribute the resulting executable under
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terms of your choice, provided that you also meet, for each linked
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independent module, the terms and conditions of the license of that
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module. An independent module is a module which is not derived from
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or based on this library. If you modify this library, you may extend
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this exception to your version of the library, but you are not
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obligated to do so. If you do not wish to do so, delete this
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exception statement from your version. */
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package gnu.javax.imageio.gif;
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import gnu.javax.imageio.IIOInputStream;
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import java.io.InputStream;
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import java.io.IOException;
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import java.util.Locale;
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import javax.imageio.ImageReader;
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import javax.imageio.spi.ImageReaderSpi;
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import javax.imageio.stream.ImageInputStream;
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public class GIFImageReaderSpi extends ImageReaderSpi
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{
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static final String vendorName = "GNU";
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static final String version = "0.1";
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static final String readerClassName =
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"gnu.javax.imageio.gif.GIFImageReader";
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static final String[] names = { "Compuserve GIF" };
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static final String[] suffixes = { ".gif" };
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static final String[] MIMETypes = {
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"image/gif",
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"image/x-gif"}; // Not sure this is legal, but it seems to be used a bit
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static final String[] writerSpiNames = null;
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static final boolean supportsStandardStreamMetadataFormat = false;
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static final String nativeStreamMetadataFormatName = null;
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static final String nativeStreamMetadataFormatClassName = null;
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static final String[] extraStreamMetadataFormatNames = null;
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static final String[] extraStreamMetadataFormatClassNames = null;
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static final boolean supportsStandardImageMetadataFormat = false;
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static final String nativeImageMetadataFormatName = null;
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static final String nativeImageMetadataFormatClassName = null;
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static final String[] extraImageMetadataFormatNames = null;
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static final String[] extraImageMetadataFormatClassNames = null;
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public GIFImageReaderSpi()
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{
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super(vendorName, version,
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names, suffixes, MIMETypes,
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readerClassName,
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new Class[]{ ImageInputStream.class, InputStream.class },
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writerSpiNames,
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supportsStandardStreamMetadataFormat,
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nativeStreamMetadataFormatName,
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nativeStreamMetadataFormatClassName,
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extraStreamMetadataFormatNames,
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extraStreamMetadataFormatClassNames,
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supportsStandardImageMetadataFormat,
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nativeImageMetadataFormatName,
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nativeImageMetadataFormatClassName,
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extraImageMetadataFormatNames,
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extraImageMetadataFormatClassNames);
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}
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public String getDescription(Locale locale)
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{
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return "Compuserve GIF";
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}
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public boolean canDecodeInput(Object input)
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throws IOException
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{
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if( input == null )
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throw new IllegalArgumentException("Input object cannot be null.");
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if( !(input instanceof ImageInputStream) &&
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!(input instanceof InputStream))
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return false;
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boolean retval;
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InputStream in;
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if( input instanceof ImageInputStream )
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in = new IIOInputStream( (ImageInputStream)input );
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else
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in = (InputStream)input;
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in.mark(10); // we read 6 bytes
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retval = GIFFile.readSignature( in );
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in.reset();
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return retval;
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}
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public ImageReader createReaderInstance(Object extension)
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{
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return new GIFImageReader(this);
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}
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}
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