116 lines
5.3 KiB
Java
116 lines
5.3 KiB
Java
/*
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* Copyright (c) 2015, 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 7182758
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* @summary Test verifies whether we are getting correct Horizontal
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* & Vertical Physical pixel spacing for active BMP image
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* through stored metadata or not.
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* @run main BMPPixelSpacingTest
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*/
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import java.io.ByteArrayInputStream;
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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.metadata.IIOMetadata;
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import javax.imageio.stream.ImageInputStream;
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import org.w3c.dom.NamedNodeMap;
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import org.w3c.dom.Node;
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import org.w3c.dom.NodeList;
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public class BMPPixelSpacingTest {
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public static void main(String[] args) throws Exception {
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// Header contaning X & Y pixels-per-meter more than value 1
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byte[] bmpHeaderData = { (byte) 0x42, (byte) 0x4d, (byte) 0x7e,
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(byte) 0x06, (byte) 0x00, (byte) 0x00, (byte) 0x00, (byte) 0x00,
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(byte) 0x00, (byte) 0x00, (byte) 0x3e, (byte) 0x00, (byte) 0x00,
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(byte) 0x00, (byte) 0x28, (byte) 0x00, (byte) 0x00, (byte) 0x00,
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(byte) 0x64, (byte) 0x00, (byte) 0x00, (byte) 0x00, (byte) 0x64,
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(byte) 0x00, (byte) 0x00, (byte) 0x00, (byte) 0x00, (byte) 0x00,
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(byte) 0x01, (byte) 0x00, (byte) 0x00, (byte) 0x00, (byte) 0x00,
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(byte) 0x00, (byte) 0x00, (byte) 0x00, (byte) 0x00, (byte) 0x00,
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(byte) 0x02, (byte) 0x00, (byte) 0x00, (byte) 0x00, (byte) 0x02,
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(byte) 0x00, (byte) 0x00, (byte) 0x00, (byte) 0x00, (byte) 0x00,
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(byte) 0xff, (byte) 0xff, (byte) 0xff, (byte) 0x00, (byte) 0xff,
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(byte) 0xff, (byte) 0xff, (byte) 0xff, (byte) 0xff, (byte) 0xff,
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(byte) 0xff, (byte) 0xff, (byte) 0xff, (byte) 0xff, (byte) 0xff,
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(byte) 0xff };
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ImageInputStream imageInput = ImageIO.
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createImageInputStream(new ByteArrayInputStream(bmpHeaderData));
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for (Iterator<ImageReader> it = ImageIO.getImageReaders(imageInput);
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it.hasNext(); ) {
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ImageReader reader = it.next();
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reader.setInput(imageInput);
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IIOMetadata metadata = reader.getImageMetadata(0);
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Node rootNode = metadata.getAsTree("javax_imageio_1.0");
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NodeList nl = rootNode.getChildNodes();
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//Parse until you get Dimension child node
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for (int i = 0; i < nl.getLength(); i++) {
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Node node = nl.item(i);
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if ((node.getNodeName()).equals("Dimension")) {
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//get childnode list under Dimension node
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NodeList cl = node.getChildNodes();
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//Corresponding node indices under Dimension node
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int horizontalNodeIndex = 1;
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int verticalNodeIndex = 2;
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Node horizontalNode = cl.item(horizontalNodeIndex);
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Node verticalNode = cl.item(verticalNodeIndex);
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//get attributes for horizontal and vertical nodes
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NamedNodeMap horizontalAttr = horizontalNode.
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getAttributes();
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NamedNodeMap verticalAttr = verticalNode.getAttributes();
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//since they have only one attribute index is 0
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int attributeIndex = 0;
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Node horizontalValue = horizontalAttr.item(attributeIndex);
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Node verticalValue = verticalAttr.item(attributeIndex);
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float horizontalNodeValue = Float.
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parseFloat((horizontalValue.getNodeValue()));
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float verticalNodeValue = Float.
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parseFloat((verticalValue.getNodeValue()));
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float expectedHorizontalValue, expectedVerticalValue;
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// in test metadata xPixelsPerMeter & yPixelsPerMeter is 2
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expectedHorizontalValue = expectedVerticalValue =
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1000.0F / 2;
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//expected and returned values should be same
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if ((Float.compare(horizontalNodeValue,
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expectedHorizontalValue) != 0) ||
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(Float.compare(verticalNodeValue,
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expectedVerticalValue) != 0)) {
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throw new RuntimeException("Invalid pixel spacing");
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}
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}
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}
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}
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}
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}
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