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- package javax.imageio.spi;
- import java.awt.image.RenderedImage;
- import java.io.IOException;
- import javax.imageio.ImageTypeSpecifier;
- import javax.imageio.ImageWriter;
- import javax.imageio.stream.ImageOutputStream;
- public abstract class ImageWriterSpi extends ImageReaderWriterSpi
- {
- public static final Class[] STANDARD_OUTPUT_TYPE =
- { ImageOutputStream.class };
- protected Class[] outputTypes;
- protected String[] readerSpiNames;
- protected ImageWriterSpi()
- {
-
- }
- public ImageWriterSpi(String vendorName, String version, String[] names,
- String[] suffixes, String[] MIMETypes,
- String writerClassName, Class[] outputTypes,
- String[] readerSpiNames,
- boolean supportsStandardStreamMetadataFormat,
- String nativeStreamMetadataFormatName,
- String nativeStreamMetadataFormatClassName,
- String[] extraStreamMetadataFormatNames,
- String[] extraStreamMetadataFormatClassNames,
- boolean supportsStandardImageMetadataFormat,
- String nativeImageMetadataFormatName,
- String nativeImageMetadataFormatClassName,
- String[] extraImageMetadataFormatNames,
- String[] extraImageMetadataFormatClassNames)
- {
- super(vendorName, version, names, suffixes, MIMETypes, writerClassName,
- supportsStandardStreamMetadataFormat, nativeStreamMetadataFormatName,
- nativeStreamMetadataFormatClassName, extraStreamMetadataFormatNames,
- extraStreamMetadataFormatClassNames, supportsStandardImageMetadataFormat,
- nativeImageMetadataFormatName, nativeImageMetadataFormatClassName,
- extraImageMetadataFormatNames, extraImageMetadataFormatClassNames);
- if (writerClassName == null)
- throw new IllegalArgumentException("writerClassName is null");
- if (outputTypes == null
- || outputTypes.length == 0)
- throw new IllegalArgumentException("outputTypes may not be null or empty");
- this.outputTypes = outputTypes;
- this.readerSpiNames = readerSpiNames;
- }
- public abstract boolean canEncodeImage(ImageTypeSpecifier type);
- public boolean canEncodeImage(RenderedImage image)
- {
- return canEncodeImage (new ImageTypeSpecifier(image));
- }
- public ImageWriter createWriterInstance()
- throws IOException
- {
- return createWriterInstance(null);
- }
- public abstract ImageWriter createWriterInstance(Object extension)
- throws IOException;
- public String[] getImageReaderSpiNames()
- {
- return readerSpiNames;
- }
- public Class[] getOutputTypes()
- {
- return outputTypes;
- }
- public boolean isFormatLossless()
- {
- return true;
- }
- public boolean isOwnWriter(ImageWriter writer)
- {
- if (writer == null)
- throw new IllegalArgumentException("writer may not be null");
- return pluginClassName.equals(writer.getClass().getName());
- }
- }
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