| /* |
| * Copyright (c) 2015, Oracle and/or its affiliates. All rights reserved. |
| * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| * |
| * This code is free software; you can redistribute it and/or modify it |
| * under the terms of the GNU General Public License version 2 only, as |
| * published by the Free Software Foundation. |
| * |
| * This code is distributed in the hope that it will be useful, but WITHOUT |
| * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
| * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
| * version 2 for more details (a copy is included in the LICENSE file that |
| * accompanied this code). |
| * |
| * You should have received a copy of the GNU General Public License version |
| * 2 along with this work; if not, write to the Free Software Foundation, |
| * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
| * |
| * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
| * or visit www.oracle.com if you need additional information or have any |
| * questions. |
| */ |
| |
| /** |
| * @test |
| * @bug 7182758 |
| * @summary Test verifies whether we are getting correct Horizontal |
| * & Vertical Physical pixel spacing for active BMP image |
| * through stored metadata or not. |
| * @run main BMPPixelSpacingTest |
| */ |
| |
| import java.io.ByteArrayInputStream; |
| import java.util.Iterator; |
| import javax.imageio.ImageIO; |
| import javax.imageio.ImageReader; |
| import javax.imageio.metadata.IIOMetadata; |
| import javax.imageio.stream.ImageInputStream; |
| import org.w3c.dom.NamedNodeMap; |
| import org.w3c.dom.Node; |
| import org.w3c.dom.NodeList; |
| |
| public class BMPPixelSpacingTest { |
| |
| public static void main(String[] args) throws Exception { |
| // Header contaning X & Y pixels-per-meter more than value 1 |
| byte[] bmpHeaderData = { (byte) 0x42, (byte) 0x4d, (byte) 0x7e, |
| (byte) 0x06, (byte) 0x00, (byte) 0x00, (byte) 0x00, (byte) 0x00, |
| (byte) 0x00, (byte) 0x00, (byte) 0x3e, (byte) 0x00, (byte) 0x00, |
| (byte) 0x00, (byte) 0x28, (byte) 0x00, (byte) 0x00, (byte) 0x00, |
| (byte) 0x64, (byte) 0x00, (byte) 0x00, (byte) 0x00, (byte) 0x64, |
| (byte) 0x00, (byte) 0x00, (byte) 0x00, (byte) 0x00, (byte) 0x00, |
| (byte) 0x01, (byte) 0x00, (byte) 0x00, (byte) 0x00, (byte) 0x00, |
| (byte) 0x00, (byte) 0x00, (byte) 0x00, (byte) 0x00, (byte) 0x00, |
| (byte) 0x02, (byte) 0x00, (byte) 0x00, (byte) 0x00, (byte) 0x02, |
| (byte) 0x00, (byte) 0x00, (byte) 0x00, (byte) 0x00, (byte) 0x00, |
| (byte) 0xff, (byte) 0xff, (byte) 0xff, (byte) 0x00, (byte) 0xff, |
| (byte) 0xff, (byte) 0xff, (byte) 0xff, (byte) 0xff, (byte) 0xff, |
| (byte) 0xff, (byte) 0xff, (byte) 0xff, (byte) 0xff, (byte) 0xff, |
| (byte) 0xff }; |
| |
| ImageInputStream imageInput = ImageIO. |
| createImageInputStream(new ByteArrayInputStream(bmpHeaderData)); |
| |
| for (Iterator<ImageReader> it = ImageIO.getImageReaders(imageInput); |
| it.hasNext(); ) { |
| ImageReader reader = it.next(); |
| reader.setInput(imageInput); |
| IIOMetadata metadata = reader.getImageMetadata(0); |
| |
| Node rootNode = metadata.getAsTree("javax_imageio_1.0"); |
| NodeList nl = rootNode.getChildNodes(); |
| |
| //Parse until you get Dimension child node |
| for (int i = 0; i < nl.getLength(); i++) { |
| Node node = nl.item(i); |
| if ((node.getNodeName()).equals("Dimension")) { |
| //get childnode list under Dimension node |
| NodeList cl = node.getChildNodes(); |
| //Corresponding node indices under Dimension node |
| int horizontalNodeIndex = 1; |
| int verticalNodeIndex = 2; |
| Node horizontalNode = cl.item(horizontalNodeIndex); |
| Node verticalNode = cl.item(verticalNodeIndex); |
| |
| //get attributes for horizontal and vertical nodes |
| NamedNodeMap horizontalAttr = horizontalNode. |
| getAttributes(); |
| NamedNodeMap verticalAttr = verticalNode.getAttributes(); |
| |
| //since they have only one attribute index is 0 |
| int attributeIndex = 0; |
| Node horizontalValue = horizontalAttr.item(attributeIndex); |
| Node verticalValue = verticalAttr.item(attributeIndex); |
| float horizontalNodeValue = Float. |
| parseFloat((horizontalValue.getNodeValue())); |
| float verticalNodeValue = Float. |
| parseFloat((verticalValue.getNodeValue())); |
| |
| float expectedHorizontalValue, expectedVerticalValue; |
| // in test metadata xPixelsPerMeter & yPixelsPerMeter is 2 |
| expectedHorizontalValue = expectedVerticalValue = |
| 1000.0F / 2; |
| //expected and returned values should be same |
| if ((Float.compare(horizontalNodeValue, |
| expectedHorizontalValue) != 0) || |
| (Float.compare(verticalNodeValue, |
| expectedVerticalValue) != 0)) { |
| throw new RuntimeException("Invalid pixel spacing"); |
| } |
| } |
| } |
| } |
| } |
| } |