/*
* Copyright (C) 2006 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package android.telephony.cdma;
import android.os.Bundle;
import android.telephony.CellLocation;
/**
* Represents the cell location on a CDMA phone.
*/
public class CdmaCellLocation extends CellLocation {
private int mBaseStationId = -1;
/**
* @hide
*/
public final static int INVALID_LAT_LONG = Integer.MAX_VALUE;
/**
* Latitude is a decimal number as specified in 3GPP2 C.S0005-A v6.0.
* It is represented in units of 0.25 seconds and ranges from -1296000
* to 1296000, both values inclusive (corresponding to a range of -90
* to +90 degrees). Integer.MAX_VALUE is considered invalid value.
*/
private int mBaseStationLatitude = INVALID_LAT_LONG;
/**
* Longitude is a decimal number as specified in 3GPP2 C.S0005-A v6.0.
* It is represented in units of 0.25 seconds and ranges from -2592000
* to 2592000, both values inclusive (corresponding to a range of -180
* to +180 degrees). Integer.MAX_VALUE is considered invalid value.
*/
private int mBaseStationLongitude = INVALID_LAT_LONG;
private int mSystemId = -1;
private int mNetworkId = -1;
/**
* Empty constructor.
* Initializes the BID, SID, NID and base station latitude and longitude
* to invalid values.
*/
public CdmaCellLocation() {
this.mBaseStationId = -1;
this.mBaseStationLatitude = INVALID_LAT_LONG;
this.mBaseStationLongitude = INVALID_LAT_LONG;
this.mSystemId = -1;
this.mNetworkId = -1;
}
/**
* Initialize the object from a bundle.
*/
public CdmaCellLocation(Bundle bundle) {
this.mBaseStationId = bundle.getInt("baseStationId", mBaseStationId);
this.mBaseStationLatitude = bundle.getInt("baseStationLatitude", mBaseStationLatitude);
this.mBaseStationLongitude = bundle.getInt("baseStationLongitude", mBaseStationLongitude);
this.mSystemId = bundle.getInt("systemId", mSystemId);
this.mNetworkId = bundle.getInt("networkId", mNetworkId);
}
/**
* @return cdma base station identification number, -1 if unknown
*/
public int getBaseStationId() {
return this.mBaseStationId;
}
/**
* Latitude is a decimal number as specified in 3GPP2 C.S0005-A v6.0.
* (http://www.3gpp2.org/public_html/specs/C.S0005-A_v6.0.pdf)
* It is represented in units of 0.25 seconds and ranges from -1296000
* to 1296000, both values inclusive (corresponding to a range of -90
* to +90 degrees). Integer.MAX_VALUE is considered invalid value.
*
* @return cdma base station latitude in units of 0.25 seconds, Integer.MAX_VALUE if unknown
*/
public int getBaseStationLatitude() {
return this.mBaseStationLatitude;
}
/**
* Longitude is a decimal number as specified in 3GPP2 C.S0005-A v6.0.
* (http://www.3gpp2.org/public_html/specs/C.S0005-A_v6.0.pdf)
* It is represented in units of 0.25 seconds and ranges from -2592000
* to 2592000, both values inclusive (corresponding to a range of -180
* to +180 degrees). Integer.MAX_VALUE is considered invalid value.
*
* @return cdma base station longitude in units of 0.25 seconds, Integer.MAX_VALUE if unknown
*/
public int getBaseStationLongitude() {
return this.mBaseStationLongitude;
}
/**
* @return cdma system identification number, -1 if unknown
*/
public int getSystemId() {
return this.mSystemId;
}
/**
* @return cdma network identification number, -1 if unknown
*/
public int getNetworkId() {
return this.mNetworkId;
}
/**
* Invalidate this object. The cell location data is set to invalid values.
*/
public void setStateInvalid() {
this.mBaseStationId = -1;
this.mBaseStationLatitude = INVALID_LAT_LONG;
this.mBaseStationLongitude = INVALID_LAT_LONG;
this.mSystemId = -1;
this.mNetworkId = -1;
}
/**
* Set the cell location data.
*/
public void setCellLocationData(int baseStationId, int baseStationLatitude,
int baseStationLongitude) {
// The following values have to be written in the correct sequence
this.mBaseStationId = baseStationId;
this.mBaseStationLatitude = baseStationLatitude; //values[2];
this.mBaseStationLongitude = baseStationLongitude; //values[3];
}
/**
* Set the cell location data.
*/
public void setCellLocationData(int baseStationId, int baseStationLatitude,
int baseStationLongitude, int systemId, int networkId) {
// The following values have to be written in the correct sequence
this.mBaseStationId = baseStationId;
this.mBaseStationLatitude = baseStationLatitude; //values[2];
this.mBaseStationLongitude = baseStationLongitude; //values[3];
this.mSystemId = systemId;
this.mNetworkId = networkId;
}
@Override
public int hashCode() {
return this.mBaseStationId ^ this.mBaseStationLatitude ^ this.mBaseStationLongitude
^ this.mSystemId ^ this.mNetworkId;
}
@Override
public boolean equals(Object o) {
CdmaCellLocation s;
try {
s = (CdmaCellLocation)o;
} catch (ClassCastException ex) {
return false;
}
if (o == null) {
return false;
}
return (equalsHandlesNulls(this.mBaseStationId, s.mBaseStationId) &&
equalsHandlesNulls(this.mBaseStationLatitude, s.mBaseStationLatitude) &&
equalsHandlesNulls(this.mBaseStationLongitude, s.mBaseStationLongitude) &&
equalsHandlesNulls(this.mSystemId, s.mSystemId) &&
equalsHandlesNulls(this.mNetworkId, s.mNetworkId)
);
}
@Override
public String toString() {
return "[" + this.mBaseStationId + ","
+ this.mBaseStationLatitude + ","
+ this.mBaseStationLongitude + ","
+ this.mSystemId + ","
+ this.mNetworkId + "]";
}
/**
* Test whether two objects hold the same data values or both are null
*
* @param a first obj
* @param b second obj
* @return true if two objects equal or both are null
*/
private static boolean equalsHandlesNulls(Object a, Object b) {
return (a == null) ? (b == null) : a.equals (b);
}
/**
* Fill the cell location data into the intent notifier Bundle based on service state
*
* @param bundleToFill intent notifier Bundle
*/
public void fillInNotifierBundle(Bundle bundleToFill) {
bundleToFill.putInt("baseStationId", this.mBaseStationId);
bundleToFill.putInt("baseStationLatitude", this.mBaseStationLatitude);
bundleToFill.putInt("baseStationLongitude", this.mBaseStationLongitude);
bundleToFill.putInt("systemId", this.mSystemId);
bundleToFill.putInt("networkId", this.mNetworkId);
}
/**
* @hide
*/
public boolean isEmpty() {
return (this.mBaseStationId == -1 &&
this.mBaseStationLatitude == INVALID_LAT_LONG &&
this.mBaseStationLongitude == INVALID_LAT_LONG &&
this.mSystemId == -1 &&
this.mNetworkId == -1);
}
/**
* Converts latitude or longitude from 0.25 seconds (as defined in the
* 3GPP2 C.S0005-A v6.0 standard) to decimal degrees
*
* @param quartSec latitude or longitude in 0.25 seconds units
* @return latitude or longitude in decimal degrees units
* @throws IllegalArgumentException if value is less than -2592000,
* greater than 2592000, or is not a number.
*/
public static double convertQuartSecToDecDegrees(int quartSec) {
if(Double.isNaN(quartSec) || quartSec < -2592000 || quartSec > 2592000){
// Invalid value
throw new IllegalArgumentException("Invalid coordiante value:" + quartSec);
}
return ((double)quartSec) / (3600 * 4);
}
}
|
