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jeremybenn |
/* BMPImageWriterSpi.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.bmp;
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import java.util.Locale;
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import javax.imageio.ImageTypeSpecifier;
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import javax.imageio.ImageWriter;
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import javax.imageio.spi.ImageWriterSpi;
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public class BMPImageWriterSpi
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extends ImageWriterSpi
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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 writerClassName = "gnu.javax.imageio.bmp.BMPImageWriter";
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static final String[] names = { "bmp", "BMP", "Microsoft Windows BMP" };
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static final String[] suffixes = { ".bmp", ".bm" };
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static final String[] MIMETypes = { "image/bmp", "image/x-windows-bmp" };
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static final String[] readerSpiNames = { "gnu.javax.imageio.bmp.BMPImageReaderSpi" };
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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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private BMPImageWriter writerInstance;
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public BMPImageWriterSpi()
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{
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super(vendorName, version, names, suffixes, MIMETypes, writerClassName,
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STANDARD_OUTPUT_TYPE, readerSpiNames, supportsStandardStreamMetadataFormat,
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nativeStreamMetadataFormatName, nativeStreamMetadataFormatClassName,
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extraStreamMetadataFormatNames, extraStreamMetadataFormatClassNames,
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supportsStandardImageMetadataFormat, nativeImageMetadataFormatName,
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nativeImageMetadataFormatClassName, extraImageMetadataFormatNames,
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extraImageMetadataFormatClassNames);
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}
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/**
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* Returns true if the image can be encoded.
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*
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* @param type - the image type specifier.
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* @return true if image can be encoded, otherwise false.
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*/
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public boolean canEncodeImage(ImageTypeSpecifier type)
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{
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if (type == null)
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return false;
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BMPInfoHeader ih = writerInstance.infoHeader;
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if (ih != null)
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{
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int compressionType = ih.getCompression();
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int bytes = type.getColorModel().getPixelSize();
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if ((compressionType == BMPInfoHeader.BI_RLE4 && (bytes != 4 || bytes != 8))
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|| (compressionType == BMPInfoHeader.BI_RGB && ((bytes != 1
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|| bytes != 4
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|| bytes != 8
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|| bytes != 16
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|| bytes != 24
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|| bytes != 32))))
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return false;
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}
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return true;
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}
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/**
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* Creates an instance of ImageWriter using the given extension.
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*
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* @param extension - the provider that is constructing this image writer, or
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* null
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*/
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public ImageWriter createWriterInstance(Object extension)
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{
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if (extension != null && extension instanceof ImageWriterSpi)
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writerInstance = new BMPImageWriter((ImageWriterSpi) extension);
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else
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writerInstance = new BMPImageWriter(this);
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return writerInstance;
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}
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/**
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* Gets the instance of ImageWriter, if already created.
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*/
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public BMPImageWriter getWriterInstance()
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{
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if (writerInstance != null)
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return writerInstance;
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return (BMPImageWriter) createWriterInstance(null);
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}
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/**
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* Returns a short description of this service provider that can be
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* presented to a human user.
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*
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* @param locale - the locale for which the description string should
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* be localized.
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*/
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public String getDescription(Locale locale)
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{
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return "Microsoft BMP v3";
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}
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}
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