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/*
* Copyright (C) 2014 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.bluetooth.le;
import android.annotation.Nullable;
import android.bluetooth.BluetoothDevice;
import android.os.Parcel;
import android.os.Parcelable;
import java.util.Objects;
/**
* ScanResult for Bluetooth LE scan.
*/
public final class ScanResult implements Parcelable {
// Remote bluetooth device.
private BluetoothDevice mDevice;
// Scan record, including advertising data and scan response data.
@Nullable
private ScanRecord mScanRecord;
// Received signal strength.
private int mRssi;
// Device timestamp when the result was last seen.
private long mTimestampNanos;
/**
* Constructor of scan result.
*
* @param device Remote bluetooth device that is found.
* @param scanRecord Scan record including both advertising data and scan response data.
* @param rssi Received signal strength.
* @param timestampNanos Device timestamp when the scan result was observed.
*/
public ScanResult(BluetoothDevice device, ScanRecord scanRecord, int rssi,
long timestampNanos) {
mDevice = device;
mScanRecord = scanRecord;
mRssi = rssi;
mTimestampNanos = timestampNanos;
}
private ScanResult(Parcel in) {
readFromParcel(in);
}
@Override
public void writeToParcel(Parcel dest, int flags) {
if (mDevice != null) {
dest.writeInt(1);
mDevice.writeToParcel(dest, flags);
} else {
dest.writeInt(0);
}
if (mScanRecord != null) {
dest.writeInt(1);
dest.writeByteArray(mScanRecord.getBytes());
} else {
dest.writeInt(0);
}
dest.writeInt(mRssi);
dest.writeLong(mTimestampNanos);
}
private void readFromParcel(Parcel in) {
if (in.readInt() == 1) {
mDevice = BluetoothDevice.CREATOR.createFromParcel(in);
}
if (in.readInt() == 1) {
mScanRecord = ScanRecord.parseFromBytes(in.createByteArray());
}
mRssi = in.readInt();
mTimestampNanos = in.readLong();
}
@Override
public int describeContents() {
return 0;
}
/**
* Returns the remote bluetooth device identified by the bluetooth device address.
*/
public BluetoothDevice getDevice() {
return mDevice;
}
/**
* Returns the scan record, which is a combination of advertisement and scan response.
*/
@Nullable
public ScanRecord getScanRecord() {
return mScanRecord;
}
/**
* Returns the received signal strength in dBm. The valid range is [-127, 127].
*/
public int getRssi() {
return mRssi;
}
/**
* Returns timestamp since boot when the scan record was observed.
*/
public long getTimestampNanos() {
return mTimestampNanos;
}
@Override
public int hashCode() {
return Objects.hash(mDevice, mRssi, mScanRecord, mTimestampNanos);
}
@Override
public boolean equals(Object obj) {
if (this == obj) {
return true;
}
if (obj == null || getClass() != obj.getClass()) {
return false;
}
ScanResult other = (ScanResult) obj;
return Objects.equals(mDevice, other.mDevice) && (mRssi == other.mRssi) &&
Objects.equals(mScanRecord, other.mScanRecord)
&& (mTimestampNanos == other.mTimestampNanos);
}
@Override
public String toString() {
return "ScanResult{" + "mDevice=" + mDevice + ", mScanRecord="
+ Objects.toString(mScanRecord) + ", mRssi=" + mRssi + ", mTimestampNanos="
+ mTimestampNanos + '}';
}
public static final Parcelable.Creator<ScanResult> CREATOR = new Creator<ScanResult>() {
@Override
public ScanResult createFromParcel(Parcel source) {
return new ScanResult(source);
}
@Override
public ScanResult[] newArray(int size) {
return new ScanResult[size];
}
};
}
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