1 /* 2 * Copyright (c) 2015, Oracle and/or its affiliates. All rights reserved. 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. 4 * 5 * This code is free software; you can redistribute it and/or modify it 6 * under the terms of the GNU General Public License version 2 only, as 7 * published by the Free Software Foundation. 8 * 9 * This code is distributed in the hope that it will be useful, but WITHOUT 10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 12 * version 2 for more details (a copy is included in the LICENSE file that 13 * accompanied this code). 14 * 15 * You should have received a copy of the GNU General Public License version 16 * 2 along with this work; if not, write to the Free Software Foundation, 17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. 18 * 19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA 20 * or visit www.oracle.com if you need additional information or have any 21 * questions. 22 */ 23 24 package simp; 25 26 import java.io.IOException; 27 import java.util.Locale; 28 import javax.imageio.IIOException; 29 import javax.imageio.ImageReader; 30 import javax.imageio.spi.ImageReaderSpi; 31 import javax.imageio.stream.ImageInputStream; 32 33 public class SIMPImageReaderSpi extends ImageReaderSpi { 34 35 private static final String[] FORMATNAMES = {"simp, SIMP"}; 36 private static final String[] SUFFIXES = {"simp"}; 37 private static final String[] MIMETYPES = {"image/simp"}; 38 39 public SIMPImageReaderSpi() { 40 super("J Duke", // vendor 41 "1.0", // version 42 FORMATNAMES, // format names 43 SUFFIXES, // file suffixes 44 MIMETYPES, // mimetypes 45 "simp.SIMPImageReader", // reader class name 46 new Class<?>[] { ImageInputStream.class }, // input types 47 null, // writer class names. TBD. 48 true, // supports native metadata, 49 null, // [no] native stream metadata format 50 null, // [no] native stream metadata class 51 null, // [no] native extra stream metadata format 52 null, // [no] native extra stream metadata class 53 true, // supports standard metadata, 54 "simp_metadata_1.0", // metadata format name, 55 "simp.SIMPMetadataFormat", // metadata format class name 56 null, // [no] extra image metadata format 57 null // [no] extra image metadata format class 58 ); 59 System.out.println("INIT SIMPImageReaderSpi"); 60 } 61 62 public String getDescription(Locale locale) { 63 return "SIMPle Image Format Reader"; 64 } 65 66 public boolean canDecodeInput(Object source) throws IOException { 67 if (!(source instanceof ImageInputStream)) { 68 return false; 69 } 70 ImageInputStream stream = (ImageInputStream)source; 71 72 stream.mark(); 73 try { 74 byte[] sig = new byte[4]; 75 stream.read(sig); 76 return sig[0]=='S' && sig[1]=='I' && sig[2]=='M' && sig[3]=='P'; 77 } finally { 78 stream.reset(); 79 } 80 } 81 82 public ImageReader createReaderInstance(Object extension) 83 throws IIOException { 84 return new SIMPImageReader(this); 85 } 86 }