// **********************************************************************
//
// <copyright>
//
// BBN Technologies
// 10 Moulton Street
// Cambridge, MA 02138
// (617) 873-8000
//
// Copyright (C) BBNT Solutions LLC. All rights reserved.
//
// </copyright>
// **********************************************************************
//
// $Source: /cvs/distapps/openmap/src/openmap/com/bbn/openmap/image/PPMFormatter.java,v $
// $RCSfile: PPMFormatter.java,v $
// $Revision: 1.2.2.3 $
// $Date: 2008/02/19 23:34:44 $
// $Author: dietrick $
//
// **********************************************************************
package com.bbn.openmap.image;
import java.awt.image.BufferedImage;
import java.io.ByteArrayOutputStream;
import java.io.DataOutputStream;
import java.util.Properties;
import com.bbn.openmap.layer.util.http.HttpConnection;
import com.bbn.openmap.util.Debug;
import com.bbn.openmap.util.PropUtils;
/**
* A simple formatter to create PPM images.
* <P>
* I got a simple definition of a PPM image an wrote something to make
* that. XV complains about the P3 image, but still draws it. No
* complaints for the P6.
*/
public class PPMFormatter extends AbstractImageFormatter {
public static final String RawBitsProperty = "rawbits";
public static final String regularMagicNumber = "P3";
public static final String rawbitsMagicNumber = "P6";
public static final int HEADER_BUFFER_SIZE = 50; // approximate,
// no big deal
public static final int MAX_COLOR_VALUE = 255; // I guess
protected boolean rawbits;
public PPMFormatter() {}
public void setProperties(String prefix, Properties props) {
rawbits = PropUtils.booleanFromProperties(props, (prefix == null ? ""
: prefix)
+ RawBitsProperty, true);
}
public ImageFormatter makeClone() {
PPMFormatter formatter = new PPMFormatter();
formatter.rawbits = rawbits;
return formatter;
}
public boolean getRawbits() {
return rawbits;
}
public void setRawbits(boolean rb) {
rawbits = rb;
}
public byte[] formatImage(BufferedImage bi) {
int height = bi.getHeight();
int width = bi.getWidth();
int[] data = new int[width * height];
bi.getRGB(0, 0, width, height, data, 0, width);
ByteArrayOutputStream baos = new ByteArrayOutputStream();
DataOutputStream dos = new DataOutputStream(baos);
try {
int pixel, count, i, lastCount;
if (!rawbits) {
dos.writeBytes(regularMagicNumber);
dos.writeBytes(" " + width);
dos.writeBytes(" " + height);
dos.writeBytes(" " + MAX_COLOR_VALUE + "\n");
count = 0; // Keep lines less that 70 characters long
// Keep track of the number of characters added per
// pass
lastCount = 0;
Debug.output("PPMFormatter: Header is " + dos.size() + " bytes");
Debug.output("PPMFormatter: Height = " + height);
Debug.output("PPMFormatter: Width = " + width);
Debug.output("PPMFormatter: data length = " + data.length);
for (i = 0; i < data.length; i++) {
pixel = data[i];
int r = (pixel >>> 16) & 0x000000FF;
int g = (pixel >>> 8) & 0x000000FF;
int b = (pixel) & 0x000000FF;
dos.writeBytes(" " + r);
dos.writeBytes(" " + g);
dos.writeBytes(" " + b);
if (count > 57) {
dos.writeBytes("\n");
count = 0;
} else {
count += dos.size() - lastCount;
}
lastCount = dos.size();
}
Debug.output("PPMFormatter: after data, size is " + dos.size());
} else {
dos.writeBytes(rawbitsMagicNumber);
dos.writeBytes(" " + width);
dos.writeBytes(" " + height);
dos.writeBytes(" " + MAX_COLOR_VALUE + "\n");
for (i = 0; i < data.length; i++) {
pixel = data[i];
dos.writeByte(pixel >>> 16);
dos.writeByte(pixel >>> 8);
dos.writeByte(pixel);
}
}
return baos.toByteArray();
} catch (java.io.IOException ioe) {
System.err.println("PPMFormatter caught IOException formatting image!");
return new byte[0];
}
}
/**
* Get the Image Type created by the ImageFormatter. These
* responses should adhere to the OGC WMT standard format labels.
* Some are listed in the WMTConstants interface file.
*/
public String getFormatLabel() {
return WMTConstants.IMAGEFORMAT_PPM;
}
public String getContentType() {
return HttpConnection.CONTENT_PPM;
}
}