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/*
* 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();
}
}
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