/*
* 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
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*/
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);
}
}