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15 package org.htmlunit.platform.image;
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17 import java.io.IOException;
18 import java.io.InputStream;
19 import java.util.Iterator;
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21 import javax.imageio.ImageIO;
22 import javax.imageio.ImageReader;
23 import javax.imageio.stream.ImageInputStream;
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25 import org.htmlunit.platform.geom.IntDimension2D;
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46 public class ImageIOImageData implements ImageData {
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50 private final ImageReader imageReader_;
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57 public ImageIOImageData(final InputStream inputStream) throws IOException {
58 final ImageInputStream iis = ImageIO.createImageInputStream(inputStream);
59 final Iterator<ImageReader> iter = ImageIO.getImageReaders(iis);
60 if (!iter.hasNext()) {
61 iis.close();
62 throw new IOException("No image detected in response");
63 }
64 final ImageReader imageReader = iter.next();
65 imageReader.setInput(iis);
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67 imageReader_ = imageReader;
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70 while (iter.hasNext()) {
71 iter.next().dispose();
72 }
73 }
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78 public ImageReader getImageReader() {
79 return imageReader_;
80 }
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85 @Override
86 public IntDimension2D getWidthHeight() throws IOException {
87 return new IntDimension2D(imageReader_.getWidth(0), imageReader_.getHeight(0));
88 }
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93 @Override
94 protected void finalize() throws Throwable {
95 close();
96 super.finalize();
97 }
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99 @Override
100 @SuppressWarnings("PMD.UnusedLocalVariable")
101 public void close() throws IOException {
102 if (imageReader_ != null) {
103 try {
104 try (ImageInputStream stream = (ImageInputStream) imageReader_.getInput()) {
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106 }
107 }
108 finally {
109 imageReader_.setInput(null);
110 imageReader_.dispose();
111 }
112 }
113 }
114 }