364 lines
12 KiB
Java
364 lines
12 KiB
Java
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/*
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* Copyright (C) 2014 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package android.bluetooth.le;
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import android.annotation.NonNull;
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import android.annotation.Nullable;
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import android.bluetooth.Attributable;
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import android.bluetooth.BluetoothDevice;
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import android.content.AttributionSource;
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import android.os.Parcel;
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import android.os.Parcelable;
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import java.util.Objects;
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/** ScanResult for Bluetooth LE scan. */
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public final class ScanResult implements Parcelable, Attributable {
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/**
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* For chained advertisements, indicates that the data contained in this scan result is
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* complete.
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*/
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public static final int DATA_COMPLETE = 0x00;
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/**
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* For chained advertisements, indicates that the controller was unable to receive all chained
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* packets and the scan result contains incomplete truncated data.
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*/
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public static final int DATA_TRUNCATED = 0x02;
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/** Indicates that the secondary physical layer was not used. */
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public static final int PHY_UNUSED = 0x00;
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/** Advertising Set ID is not present in the packet. */
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public static final int SID_NOT_PRESENT = 0xFF;
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/** TX power is not present in the packet. */
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public static final int TX_POWER_NOT_PRESENT = 0x7F;
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/** Periodic advertising interval is not present in the packet. */
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public static final int PERIODIC_INTERVAL_NOT_PRESENT = 0x00;
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/** Mask for checking whether event type represents legacy advertisement. */
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private static final int ET_LEGACY_MASK = 0x10;
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/** Mask for checking whether event type represents connectable advertisement. */
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private static final int ET_CONNECTABLE_MASK = 0x01;
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// Remote Bluetooth device.
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private BluetoothDevice mDevice;
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// Scan record, including advertising data and scan response data.
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@Nullable private ScanRecord mScanRecord;
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// Received signal strength.
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private int mRssi;
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// Device timestamp when the result was last seen.
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private long mTimestampNanos;
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private int mEventType;
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private int mPrimaryPhy;
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private int mSecondaryPhy;
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private int mAdvertisingSid;
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private int mTxPower;
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private int mPeriodicAdvertisingInterval;
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/**
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* Constructs a new ScanResult.
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*
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* @param device Remote Bluetooth device found.
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* @param scanRecord Scan record including both advertising data and scan response data.
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* @param rssi Received signal strength.
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* @param timestampNanos Timestamp at which the scan result was observed.
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* @deprecated use {@link #ScanResult(BluetoothDevice, int, int, int, int, int, int, int,
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* ScanRecord, long)}
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*/
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@Deprecated
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public ScanResult(
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BluetoothDevice device, ScanRecord scanRecord, int rssi, long timestampNanos) {
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mDevice = device;
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mScanRecord = scanRecord;
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mRssi = rssi;
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mTimestampNanos = timestampNanos;
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mEventType = (DATA_COMPLETE << 5) | ET_LEGACY_MASK | ET_CONNECTABLE_MASK;
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mPrimaryPhy = BluetoothDevice.PHY_LE_1M;
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mSecondaryPhy = PHY_UNUSED;
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mAdvertisingSid = SID_NOT_PRESENT;
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mTxPower = 127;
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mPeriodicAdvertisingInterval = 0;
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}
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/**
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* Constructs a new ScanResult.
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*
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* @param device Remote Bluetooth device found.
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* @param eventType Event type.
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* @param primaryPhy Primary advertising phy.
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* @param secondaryPhy Secondary advertising phy.
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* @param advertisingSid Advertising set ID.
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* @param txPower Transmit power.
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* @param rssi Received signal strength.
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* @param periodicAdvertisingInterval Periodic advertising interval.
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* @param scanRecord Scan record including both advertising data and scan response data.
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* @param timestampNanos Timestamp at which the scan result was observed.
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*/
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public ScanResult(
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BluetoothDevice device,
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int eventType,
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int primaryPhy,
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int secondaryPhy,
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int advertisingSid,
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int txPower,
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int rssi,
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int periodicAdvertisingInterval,
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ScanRecord scanRecord,
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long timestampNanos) {
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mDevice = device;
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mEventType = eventType;
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mPrimaryPhy = primaryPhy;
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mSecondaryPhy = secondaryPhy;
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mAdvertisingSid = advertisingSid;
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mTxPower = txPower;
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mRssi = rssi;
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mPeriodicAdvertisingInterval = periodicAdvertisingInterval;
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mScanRecord = scanRecord;
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mTimestampNanos = timestampNanos;
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}
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private ScanResult(Parcel in) {
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readFromParcel(in);
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}
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@Override
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public void writeToParcel(Parcel dest, int flags) {
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if (mDevice != null) {
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dest.writeInt(1);
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mDevice.writeToParcel(dest, flags);
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} else {
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dest.writeInt(0);
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}
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if (mScanRecord != null) {
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dest.writeInt(1);
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dest.writeByteArray(mScanRecord.getBytes());
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} else {
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dest.writeInt(0);
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}
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dest.writeInt(mRssi);
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dest.writeLong(mTimestampNanos);
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dest.writeInt(mEventType);
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dest.writeInt(mPrimaryPhy);
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dest.writeInt(mSecondaryPhy);
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dest.writeInt(mAdvertisingSid);
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dest.writeInt(mTxPower);
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dest.writeInt(mPeriodicAdvertisingInterval);
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}
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private void readFromParcel(Parcel in) {
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if (in.readInt() == 1) {
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mDevice = BluetoothDevice.CREATOR.createFromParcel(in);
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}
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if (in.readInt() == 1) {
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mScanRecord = ScanRecord.parseFromBytes(in.createByteArray());
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}
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mRssi = in.readInt();
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mTimestampNanos = in.readLong();
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mEventType = in.readInt();
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mPrimaryPhy = in.readInt();
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mSecondaryPhy = in.readInt();
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mAdvertisingSid = in.readInt();
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mTxPower = in.readInt();
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mPeriodicAdvertisingInterval = in.readInt();
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}
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@Override
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public int describeContents() {
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return 0;
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}
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/** @hide */
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public void setAttributionSource(@NonNull AttributionSource attributionSource) {
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Attributable.setAttributionSource(mDevice, attributionSource);
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}
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/**
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* Returns the remote Bluetooth device identified by the Bluetooth device address. If the device
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* is bonded, calling {@link BluetoothDevice#getAddress} on the object returned by this method
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* will return the address that was originally bonded with (either identity address or random
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* address).
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*/
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public BluetoothDevice getDevice() {
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return mDevice;
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}
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/** Returns the scan record, which is a combination of advertisement and scan response. */
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@Nullable
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public ScanRecord getScanRecord() {
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return mScanRecord;
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}
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/** Returns the received signal strength in dBm. The valid range is [-127, 126]. */
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public int getRssi() {
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return mRssi;
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}
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/** Returns timestamp since boot when the scan record was observed. */
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public long getTimestampNanos() {
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return mTimestampNanos;
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}
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/**
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* Returns true if this object represents legacy scan result. Legacy scan results do not contain
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* advanced advertising information as specified in the Bluetooth Core Specification v5.
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*/
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public boolean isLegacy() {
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return (mEventType & ET_LEGACY_MASK) != 0;
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}
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/** Returns true if this object represents connectable scan result. */
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public boolean isConnectable() {
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return (mEventType & ET_CONNECTABLE_MASK) != 0;
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}
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/**
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* Returns the data status. Can be one of {@link ScanResult#DATA_COMPLETE} or {@link
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* ScanResult#DATA_TRUNCATED}.
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*/
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public int getDataStatus() {
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// return bit 5 and 6
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return (mEventType >> 5) & 0x03;
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}
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/**
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* Returns the primary Physical Layer on which this advertisement was received. Can be one of
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* {@link BluetoothDevice#PHY_LE_1M} or {@link BluetoothDevice#PHY_LE_CODED}.
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*/
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public int getPrimaryPhy() {
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return mPrimaryPhy;
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}
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/**
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* Returns the secondary Physical Layer on which this advertisement was received. Can be one of
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* {@link BluetoothDevice#PHY_LE_1M}, {@link BluetoothDevice#PHY_LE_2M}, {@link
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* BluetoothDevice#PHY_LE_CODED} or {@link ScanResult#PHY_UNUSED} - if the advertisement was not
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* received on a secondary physical channel.
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*/
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public int getSecondaryPhy() {
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return mSecondaryPhy;
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}
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/**
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* Returns the advertising set id. May return {@link ScanResult#SID_NOT_PRESENT} if no set id
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* was is present.
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*/
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public int getAdvertisingSid() {
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return mAdvertisingSid;
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}
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/**
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* Returns the transmit power in dBm. Valid range is [-127, 126]. A value of {@link
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* ScanResult#TX_POWER_NOT_PRESENT} indicates that the TX power is not present.
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*/
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public int getTxPower() {
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return mTxPower;
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}
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/**
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* Returns the periodic advertising interval in units of 1.25ms. Valid range is 6 (7.5ms) to
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* 65536 (81918.75ms). A value of {@link ScanResult#PERIODIC_INTERVAL_NOT_PRESENT} means
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* periodic advertising interval is not present.
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*/
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public int getPeriodicAdvertisingInterval() {
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return mPeriodicAdvertisingInterval;
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}
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@Override
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public int hashCode() {
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return Objects.hash(
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mDevice,
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mRssi,
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mScanRecord,
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mTimestampNanos,
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mEventType,
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mPrimaryPhy,
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mSecondaryPhy,
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mAdvertisingSid,
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mTxPower,
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mPeriodicAdvertisingInterval);
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}
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@Override
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public boolean equals(@Nullable Object obj) {
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if (this == obj) {
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return true;
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}
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if (obj == null || getClass() != obj.getClass()) {
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return false;
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}
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ScanResult other = (ScanResult) obj;
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return Objects.equals(mDevice, other.mDevice)
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&& (mRssi == other.mRssi)
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&& Objects.equals(mScanRecord, other.mScanRecord)
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&& (mTimestampNanos == other.mTimestampNanos)
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&& mEventType == other.mEventType
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&& mPrimaryPhy == other.mPrimaryPhy
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&& mSecondaryPhy == other.mSecondaryPhy
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&& mAdvertisingSid == other.mAdvertisingSid
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&& mTxPower == other.mTxPower
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&& mPeriodicAdvertisingInterval == other.mPeriodicAdvertisingInterval;
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}
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@Override
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public String toString() {
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return "ScanResult{"
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+ "device="
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+ mDevice
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+ ", scanRecord="
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+ Objects.toString(mScanRecord)
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+ ", rssi="
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+ mRssi
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+ ", timestampNanos="
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+ mTimestampNanos
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+ ", eventType="
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+ mEventType
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+ ", primaryPhy="
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+ mPrimaryPhy
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+ ", secondaryPhy="
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+ mSecondaryPhy
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+ ", advertisingSid="
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+ mAdvertisingSid
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+ ", txPower="
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+ mTxPower
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+ ", periodicAdvertisingInterval="
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+ mPeriodicAdvertisingInterval
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+ '}';
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}
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public static final @android.annotation.NonNull Parcelable.Creator<ScanResult> CREATOR =
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new Creator<ScanResult>() {
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@Override
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public ScanResult createFromParcel(Parcel source) {
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return new ScanResult(source);
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}
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@Override
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public ScanResult[] newArray(int size) {
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return new ScanResult[size];
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}
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};
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}
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