/*
* ImageI/O-Ext - OpenSource Java Image translation Library
* http://www.geo-solutions.it/
* http://java.net/projects/imageio-ext/
* (C) 2007 - 2009, GeoSolutions
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation;
* either version 3 of the License, or (at your option) any later version.
*
* This library 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
* Lesser General Public License for more details.
*/
package it.geosolutions.imageio.plugins.vrt;
import it.geosolutions.imageio.gdalframework.AbstractGDALTest;
import it.geosolutions.imageio.gdalframework.Viewer;
import it.geosolutions.imageio.utilities.ImageIOUtilities;
import it.geosolutions.resources.TestData;
import org.junit.Assert;
import org.junit.Test;
import javax.imageio.ImageIO;
import javax.imageio.ImageReadParam;
import javax.imageio.ImageReader;
import javax.media.jai.JAI;
import javax.media.jai.ParameterBlockJAI;
import javax.media.jai.RenderedOp;
import java.awt.*;
import java.awt.image.RenderedImage;
import java.io.File;
import java.io.FileNotFoundException;
import java.io.IOException;
import java.util.Iterator;
/**
* Testing reading capabilities for ArcGrid with {@link VRTImageReader}.
* JAI.
*
* @author Simone Giannecchini, GeoSolutions.
* @author Daniele Romagnoli, GeoSolutions.
*
*/
public class ArcGridReadVrtTest extends AbstractGDALTest {
public ArcGridReadVrtTest() {
super();
}
/**
* Simple test read through JAI - ImageIO
*
* @throws FileNotFoundException
* @throws IOException
*/
@Test
public void readJAI() throws FileNotFoundException, IOException {
if (!isGDALAvailable) {
return;
}
final ParameterBlockJAI pbjImageRead;
final String fileName = "095b_dem_90m.asc.vrt";
final File file = TestData.file(this, fileName);
pbjImageRead = new ParameterBlockJAI("ImageRead");
pbjImageRead.setParameter("Input", file);
RenderedOp image = JAI.create("ImageRead", pbjImageRead);
if (TestData.isInteractiveTest())
Viewer.visualizeAllInformation(image, fileName);
else
image.getTiles();
Assert.assertEquals(351, image.getWidth());
Assert.assertEquals(350, image.getHeight());
ImageIOUtilities.disposeImage(image);
}
/**
* Simple test read through ImageIO
*
* @throws FileNotFoundException
* @throws IOException
*/
@Test
public void readImageIO() throws FileNotFoundException, IOException {
if (!isGDALAvailable) {
return;
}
final File file = TestData.file(this, "095b_dem_90m.asc.vrt");
// //
//
// Try to get a reader for this raster data
//
// //
final Iterator<ImageReader> it = ImageIO.getImageReaders(file);
Assert.assertTrue(it.hasNext());
// //
//
// read some data from it using subsampling
//
// //
final ImageReader reader = (ImageReader) it.next();
Assert.assertTrue(reader instanceof VRTImageReader);
ImageReadParam rp = reader.getDefaultReadParam();
rp.setSourceSubsampling(2, 2, 0, 0);
reader.setInput(file);
RenderedImage image = reader.read(0, rp);
if (TestData.isInteractiveTest())
Viewer.visualizeAllInformation(image, "subsample read " + file.getName());
Assert.assertEquals((int) (reader.getWidth(0) / 2.0 + 0.5), image.getWidth());
Assert.assertEquals((int) (reader.getHeight(0) / 2.0 + 0.5), image.getHeight());
reader.reset();
// //
//
// read some data from it using sourceregion
//
// //
Assert.assertTrue(reader instanceof VRTImageReader);
rp = reader.getDefaultReadParam();
rp.setSourceRegion(new Rectangle(0, 0, 60, 42));
reader.setInput(file);
image = reader.read(0, rp);
if (TestData.isInteractiveTest())
Viewer.visualizeAllInformation(image, "subsample read " + file.getName());
reader.reset();
Assert.assertEquals(60, image.getWidth());
Assert.assertEquals(42, image.getHeight());
reader.dispose();
}
}