121 lines
4.5 KiB
Java
121 lines
4.5 KiB
Java
/*
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* Copyright (c) 2018, 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 6574555
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* @summary Test verifies that PNGImageWriter encodes the R, G, B
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* values of bKGD chunk properly.
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* @run main VerifyRGBValuesFromBKGDChunk
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*/
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import java.awt.image.BufferedImage;
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import java.io.IOException;
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import java.util.Iterator;
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import javax.imageio.ImageTypeSpecifier;
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import javax.imageio.ImageWriter;
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import javax.imageio.ImageReader;
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import javax.imageio.ImageIO;
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import javax.imageio.ImageWriteParam;
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import javax.imageio.metadata.IIOMetadata;
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import javax.imageio.metadata.IIOMetadataNode;
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import javax.imageio.IIOImage;
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import javax.imageio.stream.ImageInputStream;
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import javax.imageio.stream.ImageOutputStream;
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import java.io.ByteArrayInputStream;
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import java.io.ByteArrayOutputStream;
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import java.io.InputStream;
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public class VerifyRGBValuesFromBKGDChunk {
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public static void main(String[] args) throws IOException {
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int width = 1;
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int height = 1;
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BufferedImage img = new
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BufferedImage(width, height, BufferedImage.TYPE_INT_BGR);
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Iterator<ImageWriter> iterWriter =
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ImageIO.getImageWritersBySuffix("png");
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ImageWriter writer = iterWriter.next();
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ImageWriteParam param = writer.getDefaultWriteParam();
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ImageTypeSpecifier specifier =
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ImageTypeSpecifier.
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createFromBufferedImageType(BufferedImage.TYPE_INT_BGR);
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IIOMetadata encodeMetadata =
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writer.getDefaultImageMetadata(specifier, param);
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// Write png image with bKGD chunk
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IIOMetadataNode bKGD_rgb = new IIOMetadataNode("bKGD_RGB");
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String red = "100";
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String green = "150";
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String blue = "200";
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bKGD_rgb.setAttribute("red", red);
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bKGD_rgb.setAttribute("green", green);
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bKGD_rgb.setAttribute("blue", blue);
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IIOMetadataNode bKGD = new IIOMetadataNode("bKGD");
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bKGD.appendChild(bKGD_rgb);
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IIOMetadataNode encodeRoot =
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new IIOMetadataNode("javax_imageio_png_1.0");
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encodeRoot.appendChild(bKGD);
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encodeMetadata.mergeTree("javax_imageio_png_1.0", encodeRoot);
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ByteArrayOutputStream baos = new ByteArrayOutputStream();
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ImageOutputStream ios = ImageIO.createImageOutputStream(baos);
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writer.setOutput(ios);
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writer.write(encodeMetadata,
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new IIOImage(img, null, encodeMetadata), param);
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writer.dispose();
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baos.flush();
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byte[] imageByteArray = baos.toByteArray();
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baos.close();
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// Get bKGD chunk from image and verify the values
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InputStream input= new ByteArrayInputStream(imageByteArray);
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ImageInputStream iis = ImageIO.createImageInputStream(input);
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Iterator<ImageReader> iterReader =
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ImageIO.getImageReadersBySuffix("png");
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ImageReader reader = iterReader.next();
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reader.setInput(iis, false, false);
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IIOMetadata decodeMetadata = reader.getImageMetadata(0);
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IIOMetadataNode decodeRoot =
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(IIOMetadataNode) decodeMetadata.
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getAsTree("javax_imageio_png_1.0");
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bKGD_rgb = (IIOMetadataNode)
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decodeRoot.getElementsByTagName("bKGD_RGB").item(0);
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reader.dispose();
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if (!(red.equals(bKGD_rgb.getAttribute("red")) &&
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green.equals(bKGD_rgb.getAttribute("green")) &&
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blue.equals(bKGD_rgb.getAttribute("blue")))) {
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throw new RuntimeException("bKGD RGB values are not stored" +
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" properly");
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}
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}
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}
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