/* Copyright (c) 2001 - 2007 TOPP - www.openplans.org. All rights reserved.
* This code is licensed under the GPL 2.0 license, availible at the root
* application directory.
*/
package org.vfny.geoserver.wms.responses.map.jpeg;
import java.awt.image.IndexColorModel;
import java.awt.image.RenderedImage;
import java.io.IOException;
import java.io.OutputStream;
import java.util.logging.Level;
import java.util.logging.Logger;
import org.geoserver.wms.WMS;
import org.geotools.image.ImageWorker;
import org.vfny.geoserver.wms.responses.DefaultRasterMapProducer;
import com.sun.media.imageioimpl.common.PackageUtil;
/**
* Map producer for JPEG image format.
*
* @author Simone Giannecchini
* @since 1.4.x
*
*/
public final class JPEGMapProducer extends DefaultRasterMapProducer {
/** Logger. */
private final static Logger LOGGER = org.geotools.util.logging.Logging.getLogger(JPEGMapProducer.class.toString());
/** the only MIME type this map producer supports */
static final String MIME_TYPE = "image/jpeg";
/** JPEG Native Acceleration Mode * */
private boolean JPEGNativeAcc;
public JPEGMapProducer(WMS wms) {
super(MIME_TYPE, wms);
this.JPEGNativeAcc = wms.getJPEGNativeAcceleration()&&PackageUtil.isCodecLibAvailable();
}
@Override
protected RenderedImage prepareImage(int width, int height, IndexColorModel palette, boolean transparent) {
// there is no transparency in JPEG anyway :-)
transparent = false;
palette = null;
return super.prepareImage(width, height, palette, transparent);
}
@Override
protected long getDrawingSurfaceMemoryUse(int width, int height, IndexColorModel palette,
boolean transparent) {
// there is no transparency in JPEG anyway :-)
transparent = false;
palette = null;
return super.getDrawingSurfaceMemoryUse(width, height, palette, transparent);
}
public void formatImageOutputStream(RenderedImage image, OutputStream outStream)
throws IOException {
if (LOGGER.isLoggable(Level.FINE)) {
LOGGER.fine("About to write a JPEG image.");
}
float quality = (100 - wms.getJpegCompression()) / 100.0f;
new ImageWorker(image).writeJPEG(outStream, "JPEG", quality, JPEGNativeAcc);
if (LOGGER.isLoggable(Level.FINE)) {
LOGGER.fine("Writing a JPEG done!!!");
}
}
public String getContentDisposition() {
// can be null
return null;
}
}