1 /* ImageReaderSpi.java -- 2 Copyright (C) 2004 Free Software Foundation, Inc. 3 4 This file is part of GNU Classpath. 5 6 GNU Classpath is free software; you can redistribute it and/or modify 7 it under the terms of the GNU General Public License as published by 8 the Free Software Foundation; either version 2, or (at your option) 9 any later version. 10 11 GNU Classpath is distributed in the hope that it will be useful, but 12 WITHOUT ANY WARRANTY; without even the implied warranty of 13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 14 General Public License for more details. 15 16 You should have received a copy of the GNU General Public License 17 along with GNU Classpath; see the file COPYING. If not, write to the 18 Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 19 02110-1301 USA. 20 21 Linking this library statically or dynamically with other modules is 22 making a combined work based on this library. Thus, the terms and 23 conditions of the GNU General Public License cover the whole 24 combination. 25 26 As a special exception, the copyright holders of this library give you 27 permission to link this library with independent modules to produce an 28 executable, regardless of the license terms of these independent 29 modules, and to copy and distribute the resulting executable under 30 terms of your choice, provided that you also meet, for each linked 31 independent module, the terms and conditions of the license of that 32 module. An independent module is a module which is not derived from 33 or based on this library. If you modify this library, you may extend 34 this exception to your version of the library, but you are not 35 obligated to do so. If you do not wish to do so, delete this 36 exception statement from your version. */ 37 38 39 package javax.imageio.spi; 40 41 import java.io.IOException; 42 43 import javax.imageio.ImageReader; 44 import javax.imageio.stream.ImageInputStream; 45 46 /** 47 * @author Michael Koch (konqueror@gmx.de) 48 */ 49 public abstract class ImageReaderSpi extends ImageReaderWriterSpi 50 { 51 public static final Class[] STANDARD_INPUT_TYPE = 52 { ImageInputStream.class }; 53 54 protected Class[] inputTypes; 55 protected String[] writerSpiNames; 56 ImageReaderSpi()57 protected ImageReaderSpi() 58 { 59 // Do nothing here. 60 } 61 ImageReaderSpi(String vendorName, String version, String[] names, String[] suffixes, String[] MIMETypes, String readerClassName, Class[] inputTypes, String[] writerSpiNames, boolean supportsStandardStreamMetadataFormat, String nativeStreamMetadataFormatName, String nativeStreamMetadataFormatClassName, String[] extraStreamMetadataFormatNames, String[] extraStreamMetadataFormatClassNames, boolean supportsStandardImageMetadataFormat, String nativeImageMetadataFormatName, String nativeImageMetadataFormatClassName, String[] extraImageMetadataFormatNames, String[] extraImageMetadataFormatClassNames)62 public ImageReaderSpi(String vendorName, String version, String[] names, 63 String[] suffixes, String[] MIMETypes, 64 String readerClassName, Class[] inputTypes, 65 String[] writerSpiNames, 66 boolean supportsStandardStreamMetadataFormat, 67 String nativeStreamMetadataFormatName, 68 String nativeStreamMetadataFormatClassName, 69 String[] extraStreamMetadataFormatNames, 70 String[] extraStreamMetadataFormatClassNames, 71 boolean supportsStandardImageMetadataFormat, 72 String nativeImageMetadataFormatName, 73 String nativeImageMetadataFormatClassName, 74 String[] extraImageMetadataFormatNames, 75 String[] extraImageMetadataFormatClassNames) 76 { 77 super(vendorName, version, names, suffixes, MIMETypes, readerClassName, 78 supportsStandardStreamMetadataFormat, nativeStreamMetadataFormatName, 79 nativeStreamMetadataFormatClassName, extraStreamMetadataFormatNames, 80 extraStreamMetadataFormatClassNames, supportsStandardImageMetadataFormat, 81 nativeImageMetadataFormatName, nativeImageMetadataFormatClassName, 82 extraImageMetadataFormatNames, extraImageMetadataFormatClassNames); 83 84 if (inputTypes == null 85 || inputTypes.length == 0) 86 throw new IllegalArgumentException("inputTypes may not be null or empty"); 87 88 this.inputTypes = inputTypes; 89 this.writerSpiNames = writerSpiNames; 90 } 91 canDecodeInput(Object source)92 public abstract boolean canDecodeInput(Object source) 93 throws IOException; 94 createReaderInstance()95 public ImageReader createReaderInstance() 96 throws IOException 97 { 98 return createReaderInstance(null); 99 } 100 createReaderInstance(Object extension)101 public abstract ImageReader createReaderInstance(Object extension) 102 throws IOException; 103 getImageWriterSpiNames()104 public String[] getImageWriterSpiNames() 105 { 106 return writerSpiNames; 107 } 108 getInputTypes()109 public Class[] getInputTypes() 110 { 111 return inputTypes; 112 } 113 isOwnReader(ImageReader reader)114 public boolean isOwnReader(ImageReader reader) 115 { 116 if (reader == null) 117 throw new IllegalArgumentException("reader may not be null"); 118 119 return pluginClassName.equals(reader.getClass().getName()); 120 } 121 } 122