1 /* 2 * Copyright (C) 2015 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17 package android.car.hardware; 18 19 import android.car.hardware.CarSensorConfig; 20 import android.car.hardware.CarSensorEvent; 21 import android.car.hardware.ICarSensorEventListener; 22 23 /** @hide */ 24 interface ICarSensor { 25 getSupportedSensors()26 int[] getSupportedSensors() = 0; 27 28 /** 29 * register a callback or update registration if already updated. 30 * @param sensorType sensor to listen with this callback. 31 * @param rate sensor rate. 32 * @return false if requested sensors cannot be subscribed / started. 33 */ registerOrUpdateSensorListener(int sensorType, int rate, in ICarSensorEventListener callback)34 boolean registerOrUpdateSensorListener(int sensorType, int rate, 35 in ICarSensorEventListener callback) = 1; 36 37 /** 38 * get latest sensor event for the type. If there was no update after car connection, it will 39 * return null immediately. 40 */ getLatestSensorEvent(int sensorType)41 CarSensorEvent getLatestSensorEvent(int sensorType) = 2; 42 43 /** 44 * Stop listening for the given sensor type. All other sensors registered before will not 45 * be affected. 46 */ unregisterSensorListener(int sensorType, in ICarSensorEventListener callback)47 void unregisterSensorListener(int sensorType, in ICarSensorEventListener callback) = 3; 48 49 /** 50 * get config flags and config array for the sensor type 51 */ getSensorConfig(int sensorType)52 CarSensorConfig getSensorConfig(int sensorType) = 4; 53 } 54