1 /* 2 * Copyright (C) 2016 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 package com.android.car.hal; 17 18 import static com.android.car.CarServiceUtils.toByteArray; 19 import static java.lang.Integer.toHexString; 20 21 import android.car.VehicleAreaType; 22 import android.car.VehicleZoneUtil; 23 import android.car.hardware.CarPropertyConfig; 24 import android.car.hardware.CarPropertyValue; 25 import android.hardware.automotive.vehicle.V2_0.VehicleArea; 26 import android.hardware.automotive.vehicle.V2_0.VehicleAreaConfig; 27 import android.hardware.automotive.vehicle.V2_0.VehiclePropConfig; 28 import android.hardware.automotive.vehicle.V2_0.VehiclePropValue; 29 import android.hardware.automotive.vehicle.V2_0.VehiclePropertyType; 30 31 import java.util.Collections; 32 import java.util.List; 33 34 /** 35 * Utility functions to work with {@link CarPropertyConfig} and {@link CarPropertyValue} 36 */ 37 /*package*/ final class CarPropertyUtils { 38 39 /* Utility class has no public constructor */ CarPropertyUtils()40 private CarPropertyUtils() {} 41 42 /** Converts {@link VehiclePropValue} to {@link CarPropertyValue} */ toCarPropertyValue( VehiclePropValue halValue, int propertyId)43 static CarPropertyValue<?> toCarPropertyValue( 44 VehiclePropValue halValue, int propertyId) { 45 Class<?> clazz = getJavaClass(halValue.prop & VehiclePropertyType.MASK); 46 int areaId = halValue.areaId; 47 VehiclePropValue.RawValue v = halValue.value; 48 49 if (Boolean.class == clazz) { 50 return new CarPropertyValue<>(propertyId, areaId, v.int32Values.get(0) == 1); 51 } else if (String.class == clazz) { 52 return new CarPropertyValue<>(propertyId, areaId, v.stringValue); 53 } else if (Long.class == clazz) { 54 return new CarPropertyValue<>(propertyId, areaId, v.int64Values.get(0)); 55 } else if (byte[].class == clazz) { 56 byte[] halData = toByteArray(v.bytes); 57 return new CarPropertyValue<>(propertyId, areaId, halData); 58 } else /* All list properties */ { 59 Object[] values = getRawValueList(clazz, v).toArray(); 60 return new CarPropertyValue<>(propertyId, areaId, 61 values.length == 1 ? values[0] : values); 62 } 63 } 64 65 /** Converts {@link CarPropertyValue} to {@link VehiclePropValue} */ toVehiclePropValue(CarPropertyValue carProp, int halPropId)66 static VehiclePropValue toVehiclePropValue(CarPropertyValue carProp, int halPropId) { 67 VehiclePropValue vehicleProp = new VehiclePropValue(); 68 vehicleProp.prop = halPropId; 69 vehicleProp.areaId = carProp.getAreaId(); 70 VehiclePropValue.RawValue v = vehicleProp.value; 71 72 Object o = carProp.getValue(); 73 74 if (o instanceof Boolean) { 75 v.int32Values.add(((Boolean )o) ? 1 : 0); 76 } else if (o instanceof Integer) { 77 v.int32Values.add((Integer) o); 78 } else if (o instanceof Float) { 79 v.floatValues.add((Float) o); 80 } else if (o instanceof Integer[]) { 81 Collections.addAll(v.int32Values, (Integer[]) o); 82 } else if (o instanceof Float[]) { 83 Collections.addAll(v.floatValues, (Float[]) o); 84 } else if (o instanceof String) { 85 v.stringValue = (String) o; 86 } else if (o instanceof byte[]) { 87 for (byte b : (byte[]) o) { 88 v.bytes.add(b); 89 } 90 } else { 91 throw new IllegalArgumentException("Unexpected type in: " + carProp); 92 } 93 94 return vehicleProp; 95 } 96 97 /** 98 * Converts {@link VehiclePropConfig} to {@link CarPropertyConfig}. 99 */ toCarPropertyConfig(VehiclePropConfig p, int propertyId)100 static CarPropertyConfig<?> toCarPropertyConfig(VehiclePropConfig p, int propertyId) { 101 int[] areas = VehicleZoneUtil.listAllZones(p.supportedAreas); 102 103 int areaType = getVehicleAreaType(p.prop & VehicleArea.MASK); 104 105 Class<?> clazz = getJavaClass(p.prop & VehiclePropertyType.MASK); 106 if (p.areaConfigs.isEmpty()) { 107 return CarPropertyConfig 108 .newBuilder(clazz, propertyId, areaType, /* capacity */ 1) 109 .addAreas(areas) 110 .build(); 111 } else { 112 CarPropertyConfig.Builder builder = CarPropertyConfig 113 .newBuilder(clazz, propertyId, areaType, /* capacity */ p.areaConfigs.size()); 114 115 for (VehicleAreaConfig area : p.areaConfigs) { 116 if (classMatched(Integer.class, clazz)) { 117 builder.addAreaConfig(area.areaId, area.minInt32Value, area.maxInt32Value); 118 } else if (classMatched(Float.class, clazz)) { 119 builder.addAreaConfig(area.areaId, area.minFloatValue, area.maxFloatValue); 120 } else if (classMatched(Long.class, clazz)) { 121 builder.addAreaConfig(area.areaId, area.minInt64Value, area.maxInt64Value); 122 } else { 123 throw new IllegalArgumentException("Unexpected type: " + clazz); 124 } 125 } 126 return builder.build(); 127 } 128 } 129 getVehicleAreaType(int halArea)130 private static @VehicleAreaType.VehicleAreaTypeValue int getVehicleAreaType(int halArea) { 131 switch (halArea) { 132 case VehicleArea.GLOBAL: 133 return VehicleAreaType.VEHICLE_AREA_TYPE_NONE; 134 case VehicleArea.ZONE: 135 return VehicleAreaType.VEHICLE_AREA_TYPE_ZONE; 136 case VehicleArea.SEAT: 137 return VehicleAreaType.VEHICLE_AREA_TYPE_SEAT; 138 case VehicleArea.DOOR: 139 return VehicleAreaType.VEHICLE_AREA_TYPE_DOOR; 140 case VehicleArea.WINDOW: 141 return VehicleAreaType.VEHICLE_AREA_TYPE_WINDOW; 142 case VehicleArea.MIRROR: 143 return VehicleAreaType.VEHICLE_AREA_TYPE_MIRROR; 144 default: 145 throw new RuntimeException("Unsupported area type " + halArea); 146 } 147 } 148 getJavaClass(int halType)149 private static Class<?> getJavaClass(int halType) { 150 switch (halType) { 151 case VehiclePropertyType.BOOLEAN: 152 return Boolean.class; 153 case VehiclePropertyType.FLOAT: 154 return Float.class; 155 case VehiclePropertyType.INT32: 156 return Integer.class; 157 case VehiclePropertyType.INT32_VEC: 158 return Integer[].class; 159 case VehiclePropertyType.FLOAT_VEC: 160 return Float[].class; 161 case VehiclePropertyType.STRING: 162 return String.class; 163 case VehiclePropertyType.BYTES: 164 return byte[].class; 165 case VehiclePropertyType.COMPLEX: 166 return Object.class; 167 default: 168 throw new IllegalArgumentException("Unexpected type: " + toHexString(halType)); 169 } 170 } 171 getRawValueList(Class<?> clazz, VehiclePropValue.RawValue value)172 private static List getRawValueList(Class<?> clazz, VehiclePropValue.RawValue value) { 173 if (classMatched(Float.class, clazz)) { 174 return value.floatValues; 175 } else if (classMatched(Integer.class, clazz)) { 176 return value.int32Values; 177 } else { 178 throw new IllegalArgumentException("Unexpected type: " + clazz); 179 } 180 } 181 classMatched(Class<?> class1, Class<?> class2)182 private static boolean classMatched(Class<?> class1, Class<?> class2) { 183 return class1 == class2 || class1.getComponentType() == class2; 184 } 185 } 186