| /* |
| * Licensed to the Apache Software Foundation (ASF) under one or more |
| * contributor license agreements. See the NOTICE file distributed with |
| * this work for additional information regarding copyright ownership. |
| * The ASF licenses this file to You under the Apache License, Version 2.0 |
| * (the "License"); you may not use this file except in compliance with |
| * the License. You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| |
| |
| package org.apache.harmony.x.imageio.plugins.png; |
| |
| import org.apache.harmony.awt.gl.image.DecodingImageSource; |
| import org.apache.harmony.awt.gl.image.OffscreenImage; |
| import org.apache.harmony.x.imageio.plugins.jpeg.IISDecodingImageSource; |
| |
| import javax.imageio.ImageReader; |
| import javax.imageio.ImageTypeSpecifier; |
| import javax.imageio.ImageReadParam; |
| import javax.imageio.plugins.jpeg.JPEGImageReadParam; |
| import javax.imageio.spi.ImageReaderSpi; |
| import javax.imageio.stream.ImageInputStream; |
| import javax.imageio.metadata.IIOMetadata; |
| import java.io.IOException; |
| import java.util.Iterator; |
| import java.awt.image.BufferedImage; |
| |
| public class PNGImageReader extends ImageReader { |
| ImageInputStream iis; |
| |
| public PNGImageReader(ImageReaderSpi imageReaderSpi) { |
| super(imageReaderSpi); |
| } |
| |
| public int getNumImages(boolean allowSearch) throws IOException { |
| //-- TODO imlement |
| throw new UnsupportedOperationException("not implemented yet"); |
| } |
| |
| public int getWidth(int imageIndex) throws IOException { |
| //-- TODO imlement |
| throw new UnsupportedOperationException("not implemented yet"); |
| } |
| |
| public int getHeight(int imageIndex) throws IOException { |
| //-- TODO imlement |
| throw new UnsupportedOperationException("not implemented yet"); |
| } |
| |
| public Iterator<ImageTypeSpecifier> getImageTypes(int imageIndex) throws IOException { |
| //-- TODO imlement |
| throw new UnsupportedOperationException("not implemented yet"); |
| } |
| |
| @Override |
| public IIOMetadata getStreamMetadata() throws IOException { |
| //-- TODO imlement |
| throw new UnsupportedOperationException("not implemented yet"); |
| } |
| |
| @Override |
| public IIOMetadata getImageMetadata(int imageIndex) throws IOException { |
| //-- TODO imlement |
| throw new UnsupportedOperationException("not implemented yet"); |
| } |
| |
| @Override |
| public BufferedImage read(int i, ImageReadParam imageReadParam) throws IOException { |
| if (iis == null) { |
| throw new IllegalArgumentException("input stream == null"); |
| } |
| |
| DecodingImageSource source = new IISDecodingImageSource(iis); |
| OffscreenImage image = new OffscreenImage(source); |
| source.addConsumer(image); |
| source.load(); |
| // The interrupted flag should be cleared because ImageDecoder interrupts |
| // current thread while decoding (due its architecture). |
| Thread.interrupted(); |
| return image.getBufferedImage(); |
| } |
| |
| @Override |
| public BufferedImage read(int i) throws IOException { |
| return read(i, null); |
| } |
| |
| @Override |
| public void setInput(Object input, boolean seekForwardOnly, boolean ignoreMetadata) { |
| super.setInput(input, seekForwardOnly, ignoreMetadata); |
| iis = (ImageInputStream) input; |
| } |
| |
| @Override |
| public ImageReadParam getDefaultReadParam() { |
| return new ImageReadParam(); |
| } |
| } |