| /* |
| * Copyright (C) 2015 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 com.android.car.hal; |
| |
| import android.car.hardware.CarSensorEvent; |
| import android.car.hardware.CarSensorManager; |
| import android.os.ServiceSpecificException; |
| import android.util.Log; |
| import android.util.SparseArray; |
| |
| import com.android.car.CarLog; |
| import com.android.car.CarSensorEventFactory; |
| import com.android.car.vehiclenetwork.VehicleNetworkConsts; |
| import com.android.car.vehiclenetwork.VehicleNetworkConsts.VehiclePropAccess; |
| import com.android.car.vehiclenetwork.VehicleNetworkConsts.VehiclePropChangeMode; |
| import com.android.car.vehiclenetwork.VehicleNetworkProto.VehiclePropConfig; |
| import com.android.car.vehiclenetwork.VehicleNetworkProto.VehiclePropValue; |
| |
| import java.io.PrintWriter; |
| import java.util.LinkedList; |
| import java.util.List; |
| |
| /** |
| * Sensor HAL implementation for physical sensors in car. |
| */ |
| public class SensorHalService extends SensorHalServiceBase { |
| |
| private static final boolean DBG_EVENTS = false; |
| |
| private static final int SENSOR_TYPE_INVALD = -1; |
| |
| private final VehicleHal mHal; |
| private boolean mIsReady = false; |
| private SensorHalServiceBase.SensorListener mSensorListener; |
| private final SparseArray<VehiclePropConfig> mSensorToHalProperty = |
| new SparseArray<VehiclePropConfig>(); |
| |
| public SensorHalService(VehicleHal hal) { |
| mHal = hal; |
| } |
| |
| @Override |
| public synchronized void init() { |
| mIsReady = true; |
| } |
| |
| @Override |
| public synchronized List<VehiclePropConfig> takeSupportedProperties( |
| List<VehiclePropConfig> allProperties) { |
| LinkedList<VehiclePropConfig> supportedProperties = new LinkedList<VehiclePropConfig>(); |
| for (VehiclePropConfig halProperty : allProperties) { |
| int sensor = getSensorTypeFromHalProperty(halProperty.getProp()); |
| if (sensor != SENSOR_TYPE_INVALD && |
| halProperty.getChangeMode() != |
| VehiclePropChangeMode.VEHICLE_PROP_CHANGE_MODE_STATIC && |
| (halProperty.getAccess() == VehiclePropAccess.VEHICLE_PROP_ACCESS_READ |
| || halProperty.getAccess() == |
| VehiclePropAccess.VEHICLE_PROP_ACCESS_WRITE)) { |
| supportedProperties.add(halProperty); |
| mSensorToHalProperty.append(sensor, halProperty); |
| } |
| } |
| return supportedProperties; |
| } |
| |
| @Override |
| public synchronized void release() { |
| mSensorToHalProperty.clear(); |
| mIsReady = false; |
| } |
| |
| // should be used only insidehandleHalEvents. |
| private final LinkedList<CarSensorEvent> mEventsToDispatch = new LinkedList<CarSensorEvent>(); |
| @Override |
| public void handleHalEvents(List<VehiclePropValue> values) { |
| for (VehiclePropValue v : values) { |
| CarSensorEvent event = createCarSensorEvent(v); |
| if (event != null) { |
| mEventsToDispatch.add(event); |
| } |
| } |
| SensorHalServiceBase.SensorListener sensorListener = null; |
| synchronized (this) { |
| sensorListener = mSensorListener; |
| } |
| if (sensorListener != null) { |
| sensorListener.onSensorEvents(mEventsToDispatch); |
| } |
| mEventsToDispatch.clear(); |
| } |
| |
| private CarSensorEvent createCarSensorEvent(VehiclePropValue v) { |
| int property = v.getProp(); |
| int sensorType = getSensorTypeFromHalProperty(property); |
| if (sensorType == SENSOR_TYPE_INVALD) { |
| throw new RuntimeException("handleBooleanHalEvent no sensor defined for property " + |
| property); |
| } |
| switch (property) { |
| // boolean |
| case VehicleNetworkConsts.VEHICLE_PROPERTY_NIGHT_MODE: |
| case VehicleNetworkConsts.VEHICLE_PROPERTY_PARKING_BRAKE_ON: |
| case VehicleNetworkConsts.VEHICLE_PROPERTY_FUEL_LEVEL_LOW: { |
| if (DBG_EVENTS) { |
| Log.i(CarLog.TAG_SENSOR, "boolean event, property:" + |
| Integer.toHexString(property) + " value:" + v.getInt32Values(0)); |
| } |
| return CarSensorEventFactory.createBooleanEvent(sensorType, v.getTimestamp(), |
| v.getInt32Values(0) == 1); |
| } |
| // int |
| case VehicleNetworkConsts.VEHICLE_PROPERTY_GEAR_SELECTION: |
| case VehicleNetworkConsts.VEHICLE_PROPERTY_DRIVING_STATUS: { |
| if (DBG_EVENTS) { |
| Log.i(CarLog.TAG_SENSOR, "int event, property:" + |
| Integer.toHexString(property) + " value:" + v.getInt32Values(0)); |
| } |
| return CarSensorEventFactory.createIntEvent(sensorType, v.getTimestamp(), |
| v.getInt32Values(0)); |
| } |
| // float |
| case VehicleNetworkConsts.VEHICLE_PROPERTY_PERF_VEHICLE_SPEED: { |
| if (DBG_EVENTS) { |
| Log.i(CarLog.TAG_SENSOR, "float event, property:" + |
| Integer.toHexString(property) + " value:" + v.getFloatValues(0)); |
| } |
| return CarSensorEventFactory.createFloatEvent(sensorType, v.getTimestamp(), |
| v.getFloatValues(0)); |
| } |
| } |
| return null; |
| } |
| |
| @Override |
| public synchronized void registerSensorListener(SensorHalServiceBase.SensorListener listener) { |
| mSensorListener = listener; |
| } |
| |
| @Override |
| public synchronized boolean isReady() { |
| return mIsReady; |
| } |
| |
| @Override |
| public synchronized int[] getSupportedSensors() { |
| int[] supportedSensors = new int[mSensorToHalProperty.size()]; |
| for (int i = 0; i < supportedSensors.length; i++) { |
| supportedSensors[i] = mSensorToHalProperty.keyAt(i); |
| } |
| return supportedSensors; |
| } |
| |
| @Override |
| public synchronized boolean requestSensorStart(int sensorType, int rate) { |
| VehiclePropConfig config = mSensorToHalProperty.get(sensorType); |
| if (config == null) { |
| return false; |
| } |
| //TODO calculate sampling rate properly |
| mHal.subscribeProperty(this, config.getProp(), fixSamplingRateForProperty(config, rate)); |
| return true; |
| } |
| |
| public CarSensorEvent getCurrentSensorValue(int sensorType) { |
| VehiclePropConfig config; |
| synchronized (this) { |
| config = mSensorToHalProperty.get(sensorType); |
| } |
| if (config == null) { |
| Log.e(CarLog.TAG_SENSOR, "sensor type not available 0x" + |
| Integer.toHexString(sensorType)); |
| return null; |
| } |
| try { |
| VehiclePropValue value = mHal.getVehicleNetwork().getProperty(config.getProp()); |
| return createCarSensorEvent(value); |
| } catch (ServiceSpecificException e) { |
| Log.e(CarLog.TAG_SENSOR, "property not ready 0x" + |
| Integer.toHexString(config.getProp()), e); |
| return null; |
| } |
| } |
| |
| private float fixSamplingRateForProperty(VehiclePropConfig prop, int carSensorManagerRate) { |
| switch (prop.getChangeMode()) { |
| case VehiclePropChangeMode.VEHICLE_PROP_CHANGE_MODE_ON_CHANGE: |
| case VehiclePropChangeMode.VEHICLE_PROP_CHANGE_MODE_ON_SET: |
| return 0; |
| } |
| float rate = 1.0f; |
| switch (carSensorManagerRate) { |
| case CarSensorManager.SENSOR_RATE_FASTEST: |
| case CarSensorManager.SENSOR_RATE_FAST: |
| rate = 10f; |
| break; |
| case CarSensorManager.SENSOR_RATE_UI: |
| rate = 5f; |
| break; |
| default: // fall back to default. |
| break; |
| } |
| if (rate > prop.getSampleRateMax()) { |
| rate = prop.getSampleRateMax(); |
| } |
| if (rate < prop.getSampleRateMin()) { |
| rate = prop.getSampleRateMin(); |
| } |
| return rate; |
| } |
| |
| @Override |
| public synchronized void requestSensorStop(int sensorType) { |
| VehiclePropConfig config = mSensorToHalProperty.get(sensorType); |
| if (config == null) { |
| return; |
| } |
| mHal.unsubscribeProperty(this, config.getProp()); |
| } |
| |
| /** |
| * Covert hal property to sensor type. This is also used to check if specific property |
| * is supported by sensor hal or not. |
| * @param halPropertyType |
| * @return |
| */ |
| static int getSensorTypeFromHalProperty(int halPropertyType) { |
| switch (halPropertyType) { |
| case VehicleNetworkConsts.VEHICLE_PROPERTY_PERF_VEHICLE_SPEED: |
| return CarSensorManager.SENSOR_TYPE_CAR_SPEED; |
| case VehicleNetworkConsts.VEHICLE_PROPERTY_GEAR_SELECTION: |
| return CarSensorManager.SENSOR_TYPE_GEAR; |
| case VehicleNetworkConsts.VEHICLE_PROPERTY_NIGHT_MODE: |
| return CarSensorManager.SENSOR_TYPE_NIGHT; |
| case VehicleNetworkConsts.VEHICLE_PROPERTY_PARKING_BRAKE_ON: |
| return CarSensorManager.SENSOR_TYPE_PARKING_BRAKE; |
| case VehicleNetworkConsts.VEHICLE_PROPERTY_DRIVING_STATUS: |
| return CarSensorManager.SENSOR_TYPE_DRIVING_STATUS; |
| case VehicleNetworkConsts.VEHICLE_PROPERTY_FUEL_LEVEL_LOW: |
| return CarSensorManager.SENSOR_TYPE_FUEL_LEVEL; |
| default: |
| return SENSOR_TYPE_INVALD; |
| } |
| } |
| |
| @Override |
| public void dump(PrintWriter writer) { |
| writer.println("*Sensor HAL*"); |
| writer.println("**Supported properties**"); |
| for (int i = 0; i < mSensorToHalProperty.size(); i++) { |
| writer.println(mSensorToHalProperty.valueAt(i).toString()); |
| } |
| } |
| } |