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 20 import static java.lang.Integer.toHexString; 21 22 import android.car.VehicleAreaType; 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 int status = halValue.status; 48 long timestamp = halValue.timestamp; 49 VehiclePropValue.RawValue v = halValue.value; 50 51 if (Boolean.class == clazz) { 52 return new CarPropertyValue<>(propertyId, areaId, status, timestamp, 53 v.int32Values.get(0) == 1); 54 } else if (Boolean[].class == clazz) { 55 Boolean[] values = new Boolean[v.int32Values.size()]; 56 for (int i = 0; i < values.length; i++) { 57 values[i] = v.int32Values.get(i) == 1; 58 } 59 return new CarPropertyValue<>(propertyId, areaId, status, timestamp, values); 60 } else if (String.class == clazz) { 61 return new CarPropertyValue<>(propertyId, areaId, status, timestamp, v.stringValue); 62 } else if (byte[].class == clazz) { 63 byte[] halData = toByteArray(v.bytes); 64 return new CarPropertyValue<>(propertyId, areaId, status, timestamp, halData); 65 } else if (Long[].class == clazz) { 66 Long[] values = new Long[v.int64Values.size()]; 67 for (int i = 0; i < values.length; i++) { 68 values[i] = v.int64Values.get(i); 69 } 70 return new CarPropertyValue<>(propertyId, areaId, status, timestamp, values); 71 } else /* All list properties */ { 72 Object[] values = getRawValueList(clazz, v).toArray(); 73 return new CarPropertyValue<>(propertyId, areaId, status, timestamp, 74 values.length == 1 ? values[0] : values); 75 } 76 } 77 78 /** Converts {@link CarPropertyValue} to {@link VehiclePropValue} */ toVehiclePropValue(CarPropertyValue carProp, int halPropId)79 static VehiclePropValue toVehiclePropValue(CarPropertyValue carProp, int halPropId) { 80 VehiclePropValue vehicleProp = new VehiclePropValue(); 81 vehicleProp.prop = halPropId; 82 vehicleProp.areaId = carProp.getAreaId(); 83 VehiclePropValue.RawValue v = vehicleProp.value; 84 85 Object o = carProp.getValue(); 86 87 if (o instanceof Boolean) { 88 v.int32Values.add(((Boolean) o) ? 1 : 0); 89 } else if (o instanceof Boolean[]) { 90 for (Boolean b : (Boolean[]) o) { 91 v.int32Values.add(((Boolean) o) ? 1 : 0); 92 } 93 } else if (o instanceof Integer) { 94 v.int32Values.add((Integer) o); 95 } else if (o instanceof Integer[]) { 96 Collections.addAll(v.int32Values, (Integer[]) o); 97 } else if (o instanceof Float) { 98 v.floatValues.add((Float) o); 99 } else if (o instanceof Float[]) { 100 Collections.addAll(v.floatValues, (Float[]) o); 101 } else if (o instanceof Long) { 102 v.int64Values.add((Long) o); 103 } else if (o instanceof Long[]) { 104 Collections.addAll(v.int64Values, (Long[]) o); 105 } else if (o instanceof String) { 106 v.stringValue = (String) o; 107 } else if (o instanceof byte[]) { 108 for (byte b : (byte[]) o) { 109 v.bytes.add(b); 110 } 111 } else { 112 throw new IllegalArgumentException("Unexpected type in: " + carProp); 113 } 114 115 return vehicleProp; 116 } 117 118 /** 119 * Converts {@link VehiclePropConfig} to {@link CarPropertyConfig}. 120 */ toCarPropertyConfig(VehiclePropConfig p, int propertyId)121 static CarPropertyConfig<?> toCarPropertyConfig(VehiclePropConfig p, int propertyId) { 122 int areaType = getVehicleAreaType(p.prop & VehicleArea.MASK); 123 // Create list of areaIds for this property 124 int[] areas = new int[p.areaConfigs.size()]; 125 for (int i=0; i<p.areaConfigs.size(); i++) { 126 areas[i] = p.areaConfigs.get(i).areaId; 127 } 128 129 Class<?> clazz = getJavaClass(p.prop & VehiclePropertyType.MASK); 130 if (p.areaConfigs.isEmpty()) { 131 return CarPropertyConfig 132 .newBuilder(clazz, propertyId, areaType, /* capacity */ 1) 133 .addAreas(areas) 134 .setAccess(p.access) 135 .setChangeMode(p.changeMode) 136 .setConfigArray(p.configArray) 137 .setConfigString(p.configString) 138 .setMaxSampleRate(p.maxSampleRate) 139 .setMinSampleRate(p.minSampleRate) 140 .build(); 141 } else { 142 CarPropertyConfig.Builder builder = CarPropertyConfig 143 .newBuilder(clazz, propertyId, areaType, /* capacity */ p.areaConfigs.size()) 144 .setAccess(p.access) 145 .setChangeMode(p.changeMode) 146 .setConfigArray(p.configArray) 147 .setConfigString(p.configString) 148 .setMaxSampleRate(p.maxSampleRate) 149 .setMinSampleRate(p.minSampleRate); 150 151 for (VehicleAreaConfig area : p.areaConfigs) { 152 if (classMatched(Integer.class, clazz)) { 153 builder.addAreaConfig(area.areaId, area.minInt32Value, area.maxInt32Value); 154 } else if (classMatched(Float.class, clazz)) { 155 builder.addAreaConfig(area.areaId, area.minFloatValue, area.maxFloatValue); 156 } else if (classMatched(Long.class, clazz)) { 157 builder.addAreaConfig(area.areaId, area.minInt64Value, area.maxInt64Value); 158 } else if (classMatched(Boolean.class, clazz) || 159 classMatched(Float[].class, clazz) || 160 classMatched(Integer[].class, clazz) || 161 classMatched(Long[].class, clazz) || 162 classMatched(String.class, clazz) || 163 classMatched(byte[].class, clazz) || 164 classMatched(Object.class, clazz)) { 165 // These property types do not have min/max values 166 builder.addArea(area.areaId); 167 } else { 168 throw new IllegalArgumentException("Unexpected type: " + clazz); 169 } 170 } 171 172 return builder.build(); 173 } 174 } 175 getVehicleAreaType(int halArea)176 private static @VehicleAreaType.VehicleAreaTypeValue int getVehicleAreaType(int halArea) { 177 switch (halArea) { 178 case VehicleArea.GLOBAL: 179 return VehicleAreaType.VEHICLE_AREA_TYPE_GLOBAL; 180 case VehicleArea.SEAT: 181 return VehicleAreaType.VEHICLE_AREA_TYPE_SEAT; 182 case VehicleArea.DOOR: 183 return VehicleAreaType.VEHICLE_AREA_TYPE_DOOR; 184 case VehicleArea.WINDOW: 185 return VehicleAreaType.VEHICLE_AREA_TYPE_WINDOW; 186 case VehicleArea.MIRROR: 187 return VehicleAreaType.VEHICLE_AREA_TYPE_MIRROR; 188 case VehicleArea.WHEEL: 189 return VehicleAreaType.VEHICLE_AREA_TYPE_WHEEL; 190 default: 191 throw new RuntimeException("Unsupported area type " + halArea); 192 } 193 } 194 getJavaClass(int halType)195 private static Class<?> getJavaClass(int halType) { 196 switch (halType) { 197 case VehiclePropertyType.BOOLEAN: 198 return Boolean.class; 199 case VehiclePropertyType.FLOAT: 200 return Float.class; 201 case VehiclePropertyType.INT32: 202 return Integer.class; 203 case VehiclePropertyType.INT64: 204 return Long.class; 205 case VehiclePropertyType.FLOAT_VEC: 206 return Float[].class; 207 case VehiclePropertyType.INT32_VEC: 208 return Integer[].class; 209 case VehiclePropertyType.INT64_VEC: 210 return Long[].class; 211 case VehiclePropertyType.STRING: 212 return String.class; 213 case VehiclePropertyType.BYTES: 214 return byte[].class; 215 case VehiclePropertyType.MIXED: 216 return Object.class; 217 default: 218 throw new IllegalArgumentException("Unexpected type: " + toHexString(halType)); 219 } 220 } 221 getRawValueList(Class<?> clazz, VehiclePropValue.RawValue value)222 private static List getRawValueList(Class<?> clazz, VehiclePropValue.RawValue value) { 223 if (classMatched(Float.class, clazz) || classMatched(Float[].class, clazz)) { 224 return value.floatValues; 225 } else if (classMatched(Integer.class, clazz) || classMatched(Integer[].class, clazz)) { 226 return value.int32Values; 227 } else if (classMatched(Long.class, clazz) || classMatched(Long[].class, clazz)) { 228 return value.int64Values; 229 } else { 230 throw new IllegalArgumentException("Unexpected type: " + clazz); 231 } 232 } 233 classMatched(Class<?> class1, Class<?> class2)234 private static boolean classMatched(Class<?> class1, Class<?> class2) { 235 return class1 == class2 || class1.getComponentType() == class2; 236 } 237 } 238