tests/vehiclehal_test/src/com/android/car/vehiclehal/test/VhalEventGenerator.java

/*
 * Copyright (C) 2018 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.vehiclehal.test;

import android.hardware.automotive.vehicle.V2_0.VehicleArea;
import android.hardware.automotive.vehicle.V2_0.VehiclePropertyGroup;
import android.hardware.automotive.vehicle.V2_0.VehiclePropertyType;
import android.os.RemoteException;

interface VhalEventGenerator {

     /**
      * The following property controls VHAL to start/stop linear fake data generation process.
      * It must match kGenerateFakeDataControllingProperty that is defined in default VHAL
      * implementation:
      *
      *    hardware/interfaces/automotive/vehicle/2.0/default/impl/vhal_v2_0/DefaultConfig.h
      */
    int GENERATE_FAKE_DATA_CONTROLLING_PROPERTY = 0x0666
            | VehiclePropertyGroup.VENDOR
            | VehicleArea.GLOBAL
            | VehiclePropertyType.MIXED;

    // Command bits sent via GENERATE_FAKE_DATA_CONTROLLING_PROPERTY to control fake data generation
    int CMD_START_LINEAR = 0; // Start linear fake data generation
    int CMD_STOP_LINEAR = 1; // Stop linear fake data generation
    int CMD_START_JSON = 2; // Start JSON-based fake data generation
    int CMD_STOP_JSON = 3; // Stop JSON-based fake data generation

    /**
     * Asynchronous call to tell VHAL to start fake event generation. VHAL will start generating
     * data after this call
     *
     * @throws RemoteException
     */
    void start() throws RemoteException;

    /**
     * Synchronous call to tell VHAL to stop fake event generation. VHAL should always stopped
     * generating data after this call.
     *
     * @throws RemoteException
     */
    void stop() throws RemoteException;
}