/*
* TeleStax, Open Source Cloud Communications Copyright 2012.
* and individual contributors
* by the @authors tag. See the copyright.txt in the distribution for a
* full listing of individual contributors.
*
* This 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 2.1 of
* the License, or (at your option) any later version.
*
* This software 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.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this software; if not, write to the Free
* Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
* 02110-1301 USA, or see the FSF site: http://www.fsf.org.
*/
package org.mobicents.protocols.ss7.map.service.mobility.subscriberInformation;
import javolution.xml.XMLFormat;
import javolution.xml.stream.XMLStreamException;
import org.mobicents.protocols.ss7.map.api.MAPException;
import org.mobicents.protocols.ss7.map.api.service.mobility.subscriberInformation.GeographicalInformation;
import org.mobicents.protocols.ss7.map.api.service.mobility.subscriberInformation.TypeOfShape;
import org.mobicents.protocols.ss7.map.primitives.OctetStringBase;
/**
*
* @author amit bhayani
* @author sergey vetyutnev
*
*/
public class GeographicalInformationImpl extends OctetStringBase implements GeographicalInformation {
private static double koef23 = Math.pow(2.0, 23) / 90;
private static double koef24 = Math.pow(2.0, 24) / 360;
private static double[] uncertaintyTable = initUncertaintyTable();
private static final String TYPE_OF_SHAPE = "typeOfShape";
private static final String LATITUDE = "latitude";
private static final String LONGITUDE = "longitude";
private static final String UNCERTAINTY = "uncertainty";
private static final String DEFAULT_STRING_VALUE = null;
private static final double DEFAULT_DOUBLE_VALUE = 0;
private static double[] initUncertaintyTable() {
double[] res = new double[128];
double c = 10;
double x = 0.1;
for (int i = 1; i < 128; i++) {
res[i] = c * (Math.pow(1 + x, i) - 1);
}
return res;
}
public GeographicalInformationImpl() {
super(8, 8, "GeographicalInformation");
}
public GeographicalInformationImpl(byte[] data) {
super(8, 8, "GeographicalInformation", data);
}
public GeographicalInformationImpl(TypeOfShape typeOfShape, double latitude, double longitude, double uncertainty)
throws MAPException {
super(8, 8, "GeographicalInformation");
setData(typeOfShape, latitude, longitude, uncertainty);
}
public void setData(TypeOfShape typeOfShape, double latitude, double longitude, double uncertainty) throws MAPException {
if (typeOfShape != TypeOfShape.EllipsoidPointWithUncertaintyCircle) {
throw new MAPException(
"typeOfShape parameter for GeographicalInformation can be only \"ellipsoid point with uncertainty circle\"");
}
this.data = new byte[8];
this.data[0] = (byte) (typeOfShape.getCode() << 4);
encodeLatitude(data, 1, latitude);
encodeLongitude(data, 4, longitude);
data[7] = (byte) encodeUncertainty(uncertainty);
}
public static double decodeLatitude(byte[] data, int begin) {
int i1 = ((data[begin] & 0xFF) << 16) + ((data[begin + 1] & 0xFF) << 8) + (data[begin + 2] & 0xFF);
int sign = 1;
if ((i1 & 0x800000) != 0) {
sign = -1;
i1 = i1 & 0x7FFFFF;
}
return i1 / koef23 * sign;
}
public static double decodeLongitude(byte[] data, int begin) {
int i1 = ((data[begin] & 0xFF) << 16) + ((data[begin + 1] & 0xFF) << 8) + (data[begin + 2] & 0xFF);
int sign = 1;
if ((i1 & 0x800000) != 0) {
sign = -1;
i1 = i1 & 0x7FFFFF;
}
return i1 / koef24 * sign;
}
public static double decodeUncertainty(int data) {
if (data < 0 || data > 127)
data = 0;
double d = uncertaintyTable[data];
return d;
}
public static void encodeLatitude(byte[] data, int begin, double val) {
boolean negativeSign = false;
if (val < 0) {
negativeSign = true;
val = -val;
}
int res = (int) (koef23 * val);
if (res > 0x7FFFFF)
res = 0x7FFFFF;
if (negativeSign)
res |= 0x800000;
data[begin] = (byte) ((res & 0xFF0000) >> 16);
data[begin + 1] = (byte) ((res & 0xFF00) >> 8);
data[begin + 2] = (byte) (res & 0xFF);
}
public static void encodeLongitude(byte[] data, int begin, double val) {
boolean negativeSign = false;
if (val < 0) {
negativeSign = true;
val = -val;
}
int res = (int) (koef24 * val);
if (res > 0x7FFFFF)
res = 0x7FFFFF;
if (negativeSign)
res |= 0x800000;
data[begin] = (byte) ((res & 0xFF0000) >> 16);
data[begin + 1] = (byte) ((res & 0xFF00) >> 8);
data[begin + 2] = (byte) (res & 0xFF);
}
public static int encodeUncertainty(double val) {
for (int i = 0; i < 127; i++) {
if (val < uncertaintyTable[i + 1]) {
return i;
}
}
return 127;
}
public byte[] getData() {
return data;
}
@Override
public TypeOfShape getTypeOfShape() {
if (this.data == null || this.data.length != 8)
return null;
return TypeOfShape.getInstance((this.data[0] & 0xFF) >> 4);
}
@Override
public double getLatitude() {
if (this.data == null || this.data.length != 8)
return 0;
return decodeLatitude(this.data, 1);
}
@Override
public double getLongitude() {
if (this.data == null || this.data.length != 8)
return 0;
return decodeLongitude(this.data, 4);
}
@Override
public double getUncertainty() {
if (this.data == null || this.data.length != 8)
return 0;
return decodeUncertainty(this.data[7]);
}
@Override
public String toString() {
StringBuilder sb = new StringBuilder();
sb.append(_PrimitiveName);
sb.append(" [");
sb.append("TypeOfShape=");
sb.append(this.getTypeOfShape());
sb.append(", Latitude=");
sb.append(this.getLatitude());
sb.append(", Longitude=");
sb.append(this.getLongitude());
sb.append(", Uncertainty=");
sb.append(this.getUncertainty());
sb.append("]");
return sb.toString();
}
/**
* XML Serialization/Deserialization
*/
protected static final XMLFormat<GeographicalInformationImpl> GEOGRAPHICAL_INFORMATION_XML = new XMLFormat<GeographicalInformationImpl>(
GeographicalInformationImpl.class) {
@Override
public void read(javolution.xml.XMLFormat.InputElement xml, GeographicalInformationImpl geographicalInformation)
throws XMLStreamException {
String str = xml.getAttribute(TYPE_OF_SHAPE, DEFAULT_STRING_VALUE);
TypeOfShape tos = null;
if (str != null)
tos = Enum.valueOf(TypeOfShape.class, str);
double lat = xml.getAttribute(LATITUDE, DEFAULT_DOUBLE_VALUE);
double lng = xml.getAttribute(LONGITUDE, DEFAULT_DOUBLE_VALUE);
double unc = xml.getAttribute(UNCERTAINTY, DEFAULT_DOUBLE_VALUE);
try {
geographicalInformation.setData(tos, lat, lng, unc);
} catch (MAPException e) {
throw new XMLStreamException("MAPException when deserializing GeographicalInformation", e);
}
}
@Override
public void write(GeographicalInformationImpl geographicalInformation, javolution.xml.XMLFormat.OutputElement xml)
throws XMLStreamException {
if (geographicalInformation.getTypeOfShape() != null) {
xml.setAttribute(TYPE_OF_SHAPE, geographicalInformation.getTypeOfShape().toString());
}
xml.setAttribute(LATITUDE, geographicalInformation.getLatitude());
xml.setAttribute(LONGITUDE, geographicalInformation.getLongitude());
xml.setAttribute(UNCERTAINTY, geographicalInformation.getUncertainty());
}
};
}