/* (c) 2014 Open Source Geospatial Foundation - all rights reserved
* (c) 2001 - 2013 OpenPlans
* This code is licensed under the GPL 2.0 license, available at the root
* application directory.
*/
package org.geoserver.wps.ppio;
import java.awt.Dimension;
import java.awt.image.RenderedImage;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import javax.media.jai.JAI;
import org.apache.commons.io.IOUtils;
import org.geoserver.wps.WPSException;
import org.geotools.coverage.grid.GridCoverage2D;
import org.geotools.coverage.grid.io.AbstractGridCoverage2DReader;
import org.geotools.coverage.grid.io.AbstractGridCoverageWriter;
import org.geotools.coverage.grid.io.AbstractGridFormat;
import org.geotools.coverage.grid.io.GridFormatFinder;
import org.geotools.coverage.grid.io.UnknownFormat;
import org.geotools.coverage.grid.io.imageio.GeoToolsWriteParams;
import org.geotools.gce.geotiff.GeoTiffFormat;
import org.geotools.gce.geotiff.GeoTiffReader;
import org.geotools.gce.geotiff.GeoTiffWriteParams;
import org.geotools.image.ImageWorker;
import org.geotools.process.ProcessException;
import org.opengis.parameter.GeneralParameterValue;
import org.opengis.parameter.ParameterValueGroup;
import org.opengis.referencing.crs.CoordinateReferenceSystem;
import org.opengis.referencing.crs.EngineeringCRS;
/**
* Decodes/encodes a GeoTIFF file
*
* @author Andrea Aime - OpenGeo
* @author Simone Giannecchini, GeoSolutions
*
*/
public class GeoTiffPPIO extends BinaryPPIO {
private final static GeoTiffWriteParams DEFAULT_WRITE_PARAMS;
private final static GeoTiffFormat TIFF_FORMAT = new GeoTiffFormat();
static {
// setting the write parameters (write out using tiling)
DEFAULT_WRITE_PARAMS = new GeoTiffWriteParams();
DEFAULT_WRITE_PARAMS.setTilingMode(GeoToolsWriteParams.MODE_EXPLICIT);
final Dimension defaultTileSize = JAI.getDefaultTileSize();
DEFAULT_WRITE_PARAMS.setTiling(defaultTileSize.width, defaultTileSize.height);
}
protected GeoTiffPPIO() {
super(GridCoverage2D.class, GridCoverage2D.class, "image/tiff");
}
@Override
public Object decode(InputStream input) throws Exception {
// in order to read a grid coverage we need to first store it on disk
File root = new File(System.getProperty("java.io.tmpdir", "."));
File f = File.createTempFile("wps", "tiff", root);
FileOutputStream os = null;
try {
os = new FileOutputStream(f);
IOUtils.copy(input, os);
} finally {
IOUtils.closeQuietly(os);
}
// and then we try to read it as a geotiff
AbstractGridFormat format = GridFormatFinder.findFormat(f);
if (format instanceof UnknownFormat) {
throw new WPSException(
"Could not find the GeoTIFF GT2 format, please check it's in the classpath");
}
return format.getReader(f).read(null);
}
@Override
public void encode(Object value, OutputStream os) throws Exception {
GridCoverage2D coverage = (GridCoverage2D) value;
CoordinateReferenceSystem crs = coverage.getCoordinateReferenceSystem();
boolean unreferenced = crs == null || crs instanceof EngineeringCRS;
// did we get lucky and all we need to do is to copy a file over?
final Object fileSource = coverage.getProperty(AbstractGridCoverage2DReader.FILE_SOURCE_PROPERTY);
if (fileSource != null && fileSource instanceof String) {
File file = new File((String) fileSource);
if(file.exists()) {
GeoTiffReader reader = null;
FileInputStream fis = null;
try {
// geotiff reader won't read unreferenced tiffs unless we tell it to
if(unreferenced) {
// just check if it has the proper extension for the moment, until
// we get a more reliable way to check if it's a tiff
String name = file.getName().toLowerCase();
if(!name.endsWith(".tiff") && !name.endsWith(".tif")) {
throw new IOException("Not a tiff");
}
} else {
reader = new GeoTiffReader(file);
reader.read(null);
}
// ooh, a geotiff already!
fis = new FileInputStream(file);
IOUtils.copyLarge(fis, os);
return;
} catch(Exception e) {
// ok, not a geotiff!
} finally {
if(reader != null) {
reader.dispose();
}
if(fis != null) {
fis.close();
}
}
}
}
// tiling
final RenderedImage renderedImage = coverage.getRenderedImage();
final int tileWidth=renderedImage.getTileWidth();
final int tileHeight=renderedImage.getTileHeight();
final boolean tiled= tileWidth!=renderedImage.getWidth()&& tileHeight!=renderedImage.getHeight();
// ok, encode in geotiff
if(unreferenced) {
if(tiled){
new ImageWorker(renderedImage).writeTIFF(os, null, 0.75f, tileWidth, tileHeight);
} else {
final Dimension defaultTileSize = JAI.getDefaultTileSize();
new ImageWorker(renderedImage).writeTIFF(os, null, 0.75f, defaultTileSize.width, defaultTileSize.height);
}
} else {
GeoTiffFormat format = new GeoTiffFormat();
final GeoTiffWriteParams wp = new GeoTiffWriteParams();
// tiling
wp.setTilingMode(GeoToolsWriteParams.MODE_EXPLICIT);
if(tiled){
wp.setTiling(tileWidth, tileHeight);
} else {
final Dimension defaultTileSize = JAI.getDefaultTileSize();
wp.setTiling(defaultTileSize.width, defaultTileSize.height);
}
final ParameterValueGroup wparams = TIFF_FORMAT.getWriteParameters();
wparams.parameter(AbstractGridFormat.GEOTOOLS_WRITE_PARAMS.getName().toString()).setValue(wp);
final GeneralParameterValue[] wps = (GeneralParameterValue[]) wparams.values().toArray(new GeneralParameterValue[1]);
// write out the coverage
AbstractGridCoverageWriter writer = (AbstractGridCoverageWriter) format.getWriter(os);
if (writer == null)
throw new WPSException(
"Could not find the GeoTIFF writer, please check it's in the classpath");
try {
writer.write(coverage, wps);
} catch(IOException e) {
throw new ProcessException(e);
} finally {
try {
writer.dispose();
} catch (Exception e) {
// swallow
}
}
}
}
@Override
public String getFileExtension() {
return "tiff";
}
}