| /* |
| * Copyright (c) 2000, 2004, 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 |
| * or visit www.oracle.com if you need additional information or have any |
| * questions. |
| */ |
| |
| package com.sun.imageio.plugins.jpeg; |
| |
| import java.util.Locale; |
| import javax.imageio.spi.ImageReaderSpi; |
| import javax.imageio.stream.ImageInputStream; |
| import javax.imageio.spi.IIORegistry; |
| import javax.imageio.spi.ServiceRegistry; |
| import java.io.IOException; |
| import javax.imageio.ImageReader; |
| import javax.imageio.IIOException; |
| |
| public class JPEGImageReaderSpi extends ImageReaderSpi { |
| |
| private static String [] writerSpiNames = |
| {"com.sun.imageio.plugins.jpeg.JPEGImageWriterSpi"}; |
| |
| public JPEGImageReaderSpi() { |
| super(JPEG.vendor, |
| JPEG.version, |
| JPEG.names, |
| JPEG.suffixes, |
| JPEG.MIMETypes, |
| "com.sun.imageio.plugins.jpeg.JPEGImageReader", |
| new Class[] { ImageInputStream.class }, |
| writerSpiNames, |
| true, |
| JPEG.nativeStreamMetadataFormatName, |
| JPEG.nativeStreamMetadataFormatClassName, |
| null, null, |
| true, |
| JPEG.nativeImageMetadataFormatName, |
| JPEG.nativeImageMetadataFormatClassName, |
| null, null |
| ); |
| } |
| |
| public String getDescription(Locale locale) { |
| return "Standard JPEG Image Reader"; |
| } |
| |
| public boolean canDecodeInput(Object source) throws IOException { |
| if (!(source instanceof ImageInputStream)) { |
| return false; |
| } |
| ImageInputStream iis = (ImageInputStream) source; |
| iis.mark(); |
| // If the first two bytes are a JPEG SOI marker, it's probably |
| // a JPEG file. If they aren't, it definitely isn't a JPEG file. |
| int byte1 = iis.read(); |
| int byte2 = iis.read(); |
| iis.reset(); |
| if ((byte1 == 0xFF) && (byte2 == JPEG.SOI)) { |
| return true; |
| } |
| return false; |
| } |
| |
| public ImageReader createReaderInstance(Object extension) |
| throws IIOException { |
| return new JPEGImageReader(this); |
| } |
| |
| } |