jdk/test/javax/imageio/ReadAbortTest.java
author jdv
Mon, 12 Sep 2016 12:07:56 +0530
changeset 41010 9824689edeb1
permissions -rw-r--r--
4924727: reader.abort() method does not work when called inside imageStarted for PNG Reviewed-by: prr, serb, bpb
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/*
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 * Copyright (c) 2016, Oracle and/or its affiliates. All rights reserved.
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 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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 *
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 * This code is free software; you can redistribute it and/or modify it
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 * under the terms of the GNU General Public License version 2 only, as
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 * published by the Free Software Foundation.
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 *
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 * This code is distributed in the hope that it will be useful, but WITHOUT
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 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
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 * version 2 for more details (a copy is included in the LICENSE file that
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 * accompanied this code).
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 *
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 * You should have received a copy of the GNU General Public License version
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 * 2 along with this work; if not, write to the Free Software Foundation,
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 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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 *
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 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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 * or visit www.oracle.com if you need additional information or have any
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 * questions.
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 */
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 /*
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 * @test
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 * @bug     4924727
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 * @summary Test verifies that if we call ImageReader.abort() in
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 *          IIOReadProgressListener.imageStarted() or
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 *          IIOReadProgressListener.imageProgress() are we
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 *          calling IIOReadProgressListener.readAborted() for all readers.
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 * @run     main ReadAbortTest
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 */
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import java.awt.image.BufferedImage;
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import java.io.File;
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import java.util.Iterator;
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import javax.imageio.ImageIO;
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import javax.imageio.ImageReader;
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import javax.imageio.event.IIOReadProgressListener;
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import javax.imageio.stream.ImageInputStream;
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import java.awt.Color;
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import java.awt.Graphics2D;
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import java.nio.file.Files;
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public class ReadAbortTest implements IIOReadProgressListener {
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    ImageReader reader = null;
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    ImageInputStream iis = null;
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    BufferedImage bimg = null;
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    File file;
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    boolean startAbort = false;
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    boolean startAborted = false;
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    boolean progressAbort = false;
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    boolean progressAborted = false;
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    Color srccolor = Color.red;
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    int width = 100;
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    int heght = 100;
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    public ReadAbortTest(String format) throws Exception {
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        try {
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            System.out.println("Test for format " + format);
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            bimg = new BufferedImage(width, heght,
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                    BufferedImage.TYPE_INT_RGB);
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            Graphics2D g = bimg.createGraphics();
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            g.setColor(srccolor);
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            g.fillRect(0, 0, width, heght);
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            g.dispose();
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            file = File.createTempFile("src_", "." + format, new File("."));
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            ImageIO.write(bimg, format, file);
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            ImageInputStream iis = ImageIO.createImageInputStream(file);
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            Iterator iter = ImageIO.getImageReaders(iis);
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            while (iter.hasNext()) {
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                reader = (ImageReader) iter.next();
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                break;
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            }
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            reader.setInput(iis);
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            reader.addIIOReadProgressListener(this);
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            // Abort reading in IIOReadProgressListener.imageStarted().
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            startAbort = true;
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            bimg = reader.read(0);
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            startAbort = false;
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            // Abort reading in IIOReadProgressListener.imageProgress().
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            progressAbort = true;
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            bimg = reader.read(0);
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            progressAbort = false;
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            iis.close();
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            /*
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             * All abort requests from imageStarted,imageProgress and
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             * imageComplete from IIOReadProgressListener should be reached
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             * otherwise throw RuntimeException.
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             */
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            if (!(startAborted
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                    && progressAborted)) {
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                throw new RuntimeException("All IIOReadProgressListener abort"
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                        + " requests are not processed for format "
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                        + format);
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            }
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        } catch (Exception e) {
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            throw e;
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        } finally {
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            Files.delete(file.toPath());
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        }
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    }
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    /*
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     * Abstract methods that we need to implement from
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     * IIOReadProgressListener, and relevant for this test case.
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     */
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    @Override
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    public void imageStarted(ImageReader source, int imageIndex) {
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        System.out.println("imageStarted called");
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        if (startAbort) {
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            source.abort();
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        }
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    }
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    @Override
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    public void imageProgress(ImageReader source, float percentageDone) {
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        System.out.println("imageProgress called");
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        if (progressAbort) {
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            source.abort();
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        }
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    }
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    @Override
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    public void readAborted(ImageReader source) {
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        System.out.println("readAborted called");
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        // Verify IIOReadProgressListener.imageStarted() abort request.
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        if (startAbort) {
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            System.out.println("imageStarted aborted ");
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            startAborted = true;
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        }
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        // Verify IIOReadProgressListener.imageProgress() abort request.
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        if (progressAbort) {
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            System.out.println("imageProgress aborted ");
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            progressAborted = true;
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        }
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    }
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    public static void main(String args[]) throws Exception {
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        final String[] formats = {"bmp", "png", "gif", "jpg", "tif"};
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        for (String format : formats) {
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            new ReadAbortTest(format);
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        }
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    }
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    /*
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     * Remaining abstract methods that we need to implement from
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     * IIOReadProgressListener, but not relevant for this test case.
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     */
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    @Override
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    public void imageComplete(ImageReader source) {
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    }
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    @Override
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    public void sequenceStarted(ImageReader reader, int i) {
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    }
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    @Override
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    public void sequenceComplete(ImageReader reader) {
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    }
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    @Override
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    public void thumbnailStarted(ImageReader reader, int i, int i1) {
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    }
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    @Override
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    public void thumbnailProgress(ImageReader reader, float f) {
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    }
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    @Override
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    public void thumbnailComplete(ImageReader reader) {
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    }
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}
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