/* * Copyright (c) 2005, 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.awt.image.ColorModel;import java.awt.image.SampleModel;import java.util.Locale;import javax.imageio.ImageTypeSpecifier;import javax.imageio.ImageWriter;import javax.imageio.spi.ImageWriterSpi;import javax.imageio.stream.ImageOutputStream;import com.sun.imageio.plugins.common.PaletteBuilder; public class GIFImageWriterSpi extends ImageWriterSpi {     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 writerClassName =    "com.sun.imageio.plugins.gif.GIFImageWriter";     private static final String[] readerSpiNames = {        "com.sun.imageio.plugins.gif.GIFImageReaderSpi"    };     public GIFImageWriterSpi() {        super(vendorName,              version,              names,              suffixes,              MIMETypes,              writerClassName,              new Class[] { ImageOutputStream.class },              readerSpiNames,              true,              GIFWritableStreamMetadata.NATIVE_FORMAT_NAME,              "com.sun.imageio.plugins.gif.GIFStreamMetadataFormat",              null, null,              true,              GIFWritableImageMetadata.NATIVE_FORMAT_NAME,              "com.sun.imageio.plugins.gif.GIFImageMetadataFormat",              null, null              );    }     public boolean canEncodeImage(ImageTypeSpecifier type) {        if (type == null) {            throw new IllegalArgumentException("type == null!");        }         SampleModel sm = type.getSampleModel();        ColorModel cm = type.getColorModel();         boolean canEncode = sm.getNumBands() == 1 &&            sm.getSampleSize(0) <= 8 &&            sm.getWidth() <= 65535 &&            sm.getHeight() <= 65535 &&            (cm == null || cm.getComponentSize()[0] <= 8);         if (canEncode) {            return true;        } else {            return PaletteBuilder.canCreatePalette(type);        }    }     public String getDescription(Locale locale) {        return "Standard GIF image writer";    }     public ImageWriter createWriterInstance(Object extension) {        return new GIFImageWriter(this);    }}