19066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project/* 29066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Licensed to the Apache Software Foundation (ASF) under one or more 39066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * contributor license agreements. See the NOTICE file distributed with 49066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * this work for additional information regarding copyright ownership. 59066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * The ASF licenses this file to You under the Apache License, Version 2.0 69066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * (the "License"); you may not use this file except in compliance with 79066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * the License. You may obtain a copy of the License at 89066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 99066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * http://www.apache.org/licenses/LICENSE-2.0 109066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 119066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Unless required by applicable law or agreed to in writing, software 129066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * distributed under the License is distributed on an "AS IS" BASIS, 139066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 149066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * See the License for the specific language governing permissions and 159066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * limitations under the License. 169066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 179066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project/** 189066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @author Rustem V. Rafikov 199066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @version $Revision: 1.3 $ 209066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 219066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Projectpackage org.apache.harmony.x.imageio.plugins.jpeg; 229066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 239066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Projectimport java.io.IOException; 249066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Projectimport java.util.Locale; 259066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Projectimport javax.imageio.ImageReader; 269066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Projectimport javax.imageio.spi.ImageReaderSpi; 279066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Projectimport javax.imageio.spi.ServiceRegistry; 289066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Projectimport javax.imageio.stream.ImageInputStream; 299066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 309066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Projectpublic class JPEGImageReaderSpi extends ImageReaderSpi { 319066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 329066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public JPEGImageReaderSpi() { 339066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project super(JPEGSpiConsts.vendorName, JPEGSpiConsts.version, 349066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project JPEGSpiConsts.names, JPEGSpiConsts.suffixes, 359066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project JPEGSpiConsts.MIMETypes, JPEGSpiConsts.readerClassName, 369066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project STANDARD_INPUT_TYPE, JPEGSpiConsts.writerSpiNames, 379066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project JPEGSpiConsts.supportsStandardStreamMetadataFormat, 389066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project JPEGSpiConsts.nativeStreamMetadataFormatName, 399066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project JPEGSpiConsts.nativeStreamMetadataFormatClassName, 409066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project JPEGSpiConsts.extraStreamMetadataFormatNames, 419066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project JPEGSpiConsts.extraStreamMetadataFormatClassNames, 429066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project JPEGSpiConsts.supportsStandardImageMetadataFormat, 439066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project JPEGSpiConsts.nativeImageMetadataFormatName, 449066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project JPEGSpiConsts.nativeImageMetadataFormatClassName, 459066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project JPEGSpiConsts.extraImageMetadataFormatNames, 469066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project JPEGSpiConsts.extraImageMetadataFormatClassNames); 479066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 489066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 499066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 509066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project @Override 519066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public boolean canDecodeInput(Object source) throws IOException { 529066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project ImageInputStream markable = (ImageInputStream) source; 539066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project try { 549066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project markable.mark(); 559066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 569066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project byte[] signature = new byte[3]; 579066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project markable.seek(0); 589066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project markable.read(signature, 0, 3); 599066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project markable.reset(); 609066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 619066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if ((signature[0] & 0xFF) == 0xFF && 629066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project (signature[1] & 0xFF) == JPEGConsts.SOI && 639066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project (signature[2] & 0xFF) == 0xFF) { // JPEG 649066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return true; 659066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 669066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } catch (IOException e) { 679066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project e.printStackTrace(); 689066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 699066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return false; 709066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 719066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 729066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project @Override 739066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public ImageReader createReaderInstance(Object extension) throws IOException { 749066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return new JPEGImageReader(this); 759066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 769066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 779066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project @Override 789066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public String getDescription(Locale locale) { 799066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return "DRL JPEG decoder"; 809066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 819066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 829066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project @Override 839066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public void onRegistration(ServiceRegistry registry, Class<?> category) { 849066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // super.onRegistration(registry, category); 859066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 869066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project} 87