service/src/com/android/car/hal/CarPropertyUtils.java - platform/packages/services/Car - Gitiles

 /*
  * Copyright (C) 2016 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 static com.android.car.CarServiceUtils.toByteArray;

 import static java.lang.Integer.toHexString;

 import android.car.VehicleAreaType;
 import android.car.hardware.CarPropertyConfig;
 import android.car.hardware.CarPropertyValue;
 import android.hardware.automotive.vehicle.V2_0.VehicleArea;
 import android.hardware.automotive.vehicle.V2_0.VehicleAreaConfig;
 import android.hardware.automotive.vehicle.V2_0.VehiclePropConfig;
 import android.hardware.automotive.vehicle.V2_0.VehiclePropValue;
 import android.hardware.automotive.vehicle.V2_0.VehiclePropertyType;

 import java.util.ArrayList;
 import java.util.Collections;
 import java.util.List;

 /**
  * Utility functions to work with {@link CarPropertyConfig} and {@link CarPropertyValue}
  */
 /*package*/ final class CarPropertyUtils {

     /* Utility class has no public constructor */
     private CarPropertyUtils() {}

     private static final int[] DEFAULT_AREAIDS = {VehicleAreaType.VEHICLE_AREA_TYPE_GLOBAL};

     // configArray[0], 1 indicates the property has a String value
     private static final int CONFIG_ARRAY_INDEX_STRING = 0;
     // configArray[1], 1 indicates the property has a Boolean value .
     private static final int CONFIG_ARRAY_INDEX_BOOLEAN = 1;
     // configArray[2], 1 indicates the property has a Integer value.
     private static final int CONFIG_ARRAY_INDEX_INT = 2;
     // configArray[3], 1 indicates the property has a Integer[] value.
     private static final int CONFIG_ARRAY_INDEX_INT_ARRAY = 3;
     // configArray[4], 1 indicates the property has a Long value.
     private static final int CONFIG_ARRAY_INDEX_LONG = 4;
     // configArray[5], the number indicates the size of Long[]  in the property.
     private static final int CONFIG_ARRAY_INDEX_LONG_ARRAY = 5;
     // configArray[6], 1 indicates the property has a Float value.
     private static final int CONFIG_ARRAY_INDEX_FLOAT = 6;
     // configArray[7], the number indicates the size of Float[] in the property.
     private static final int CONFIG_ARRAY_INDEX_FLOAT_ARRAY = 7;
     // configArray[8], the number indicates the size of byte[] in the property.
     private static final int CONFIG_ARRAY_INDEX_BYTES = 8;
     // Length of mixed type properties' configArray should always be 9
     private static final int CONFIG_ARRAY_LENGTH = 9;
     /** Converts {@link VehiclePropValue} to {@link CarPropertyValue} */
     static CarPropertyValue<?> toCarPropertyValue(
             VehiclePropValue halValue, int propertyId) {
         Class<?> clazz = getJavaClass(halValue.prop & VehiclePropertyType.MASK);
         int areaId = halValue.areaId;
         int status = halValue.status;
         long timestamp = halValue.timestamp;
         VehiclePropValue.RawValue v = halValue.value;

         // Handles each return value from {@link getJavaClass}.
         if (Boolean.class == clazz) {
             return new CarPropertyValue<>(propertyId, areaId, status, timestamp,
                                           v.int32Values.get(0) == 1);
         } else if (Float.class == clazz) {
             return new CarPropertyValue<>(propertyId, areaId, status, timestamp,
                                           v.floatValues.get(0));
         } else if (Integer.class == clazz) {
             return new CarPropertyValue<>(propertyId, areaId, status, timestamp,
                                           v.int32Values.get(0));
         } else if (Long.class == clazz) {
             return new CarPropertyValue<>(propertyId, areaId, status, timestamp,
                                           v.int64Values.get(0));
         } else if (Float[].class == clazz) {
             Float[] values = new Float[v.floatValues.size()];
             for (int i = 0; i < values.length; i++) {
                 values[i] = v.floatValues.get(i);
             }
             return new CarPropertyValue<>(propertyId, areaId, status, timestamp, values);
         } else if (Integer[].class == clazz) {
             Integer[] values = new Integer[v.int32Values.size()];
             for (int i = 0; i < values.length; i++) {
                 values[i] = v.int32Values.get(i);
             }
             return new CarPropertyValue<>(propertyId, areaId, status, timestamp, values);
         } else if (Long[].class == clazz) {
             Long[] values = new Long[v.int64Values.size()];
             for (int i = 0; i < values.length; i++) {
                 values[i] = v.int64Values.get(i);
             }
             return new CarPropertyValue<>(propertyId, areaId, status, timestamp, values);
         } else if (String.class == clazz) {
             return new CarPropertyValue<>(propertyId, areaId, status, timestamp, v.stringValue);
         } else if (byte[].class == clazz) {
             byte[] halData = toByteArray(v.bytes);
             return new CarPropertyValue<>(propertyId, areaId, status, timestamp, halData);
         } else {
             throw new IllegalArgumentException("Unexpected type in: " + propertyId);
         }
     }

     /** Converts {@link VehiclePropValue} to {@link CarPropertyValue} for MIXED type properties*/
     static CarPropertyValue<?> toMixedCarPropertyValue(
             VehiclePropValue halValue, int propertyId, boolean containBoolean,
             boolean containString) {
         int areaId = halValue.areaId;
         int status = halValue.status;
         long timestamp = halValue.timestamp;
         VehiclePropValue.RawValue value = halValue.value;

         List<Object> valuesList = new ArrayList<>();
         if (containString) {
             valuesList.add(value.stringValue);
         }
         if (containBoolean) {
             boolean boolValue = value.int32Values.get(0) == 1;
             valuesList.add(boolValue);
             valuesList.addAll(value.int32Values.subList(1, value.int32Values.size()));
         } else {
             valuesList.addAll(value.int32Values);
         }
         valuesList.addAll(value.int64Values);
         valuesList.addAll(value.floatValues);
         valuesList.addAll(value.bytes);
         return new CarPropertyValue<>(propertyId, areaId, status, timestamp, valuesList.toArray());
     }

     /** Converts {@link CarPropertyValue} to {@link VehiclePropValue} */
     static VehiclePropValue toVehiclePropValue(CarPropertyValue carProp, int halPropId) {
         VehiclePropValue vehicleProp = new VehiclePropValue();
         vehicleProp.prop = halPropId;
         vehicleProp.areaId = carProp.getAreaId();
         VehiclePropValue.RawValue v = vehicleProp.value;

         Object o = carProp.getValue();

         if (o instanceof Boolean) {
             v.int32Values.add(((Boolean) o) ? 1 : 0);
         } else if (o instanceof Integer) {
             v.int32Values.add((Integer) o);
         } else if (o instanceof Integer[]) {
             Collections.addAll(v.int32Values, (Integer[]) o);
         } else if (o instanceof Float) {
             v.floatValues.add((Float) o);
         } else if (o instanceof Float[]) {
             Collections.addAll(v.floatValues, (Float[]) o);
         } else if (o instanceof Long) {
             v.int64Values.add((Long) o);
         } else if (o instanceof Long[]) {
             Collections.addAll(v.int64Values, (Long[]) o);
         } else if (o instanceof String) {
             v.stringValue = (String) o;
         } else if (o instanceof byte[]) {
             for (byte b : (byte[]) o) {
                 v.bytes.add(b);
             }
         } else {
             throw new IllegalArgumentException("Unexpected type in: " + carProp);
         }

         return vehicleProp;
     }

     /**
      * Converts {@link CarPropertyValue} to {@link VehiclePropValue} for MIXED type properties
      * configArray[0], 1 indicates the property has a String value
      * configArray[1], 1 indicates the property has a Boolean value .
      * configArray[2], 1 indicates the property has a Integer value.
      * configArray[3], the number indicates the size of Integer[]  in the property.
      * configArray[4], 1 indicates the property has a Long value .
      * configArray[5], the number indicates the size of Long[]  in the property.
      * configArray[6], 1 indicates the property has a Float value .
      * configArray[7], the number indicates the size of Float[] in the property.
      * configArray[8], the number indicates the size of byte[] in the property.
      *
      * For example:
      * configArray = {1, 1, 1, 3, 0, 0, 0, 0, 0} indicates the property has a String value, a
      * Boolean value, an Integer value, an Integer array with 3 enums.
      */
     static VehiclePropValue toMixedVehiclePropValue(CarPropertyValue carProp,
             int halPropId, int[] configArray) {
         if (configArray.length != CONFIG_ARRAY_LENGTH) {
             throw new IllegalArgumentException("Unexpected configArray in:" + carProp);
         }
         VehiclePropValue vehicleProp = new VehiclePropValue();
         vehicleProp.prop = halPropId;
         vehicleProp.areaId = carProp.getAreaId();
         VehiclePropValue.RawValue v = vehicleProp.value;

         Object[] values = (Object[]) carProp.getValue();
         int indexOfValues = 0;
         if (configArray[CONFIG_ARRAY_INDEX_STRING] != 0) {
             // Add a string value
             v.stringValue = (String) values[indexOfValues];
             indexOfValues++;
         }

         if (configArray[CONFIG_ARRAY_INDEX_BOOLEAN] != 0) {
             // Add a boolean value
             v.int32Values.add((Boolean) values[indexOfValues] ? 1 : 0); // in HAL, 1 indicates true
             indexOfValues++;
         }

         /*
          * configArray[2], 1 indicates the property has a Integer value.
          * configArray[3], the number indicates the size of Integer[]  in the property.
          */
         int integerSize = configArray[CONFIG_ARRAY_INDEX_INT]
                 + configArray[CONFIG_ARRAY_INDEX_INT_ARRAY];
         while (integerSize != 0) {
             v.int32Values.add((Integer) values[indexOfValues]);
             indexOfValues++;
             integerSize--;
         }
         /* configArray[4], 1 indicates the property has a Long value .
          * configArray[5], the number indicates the size of Long[]  in the property.
          */
         int longSize = configArray[CONFIG_ARRAY_INDEX_LONG]
                 + configArray[CONFIG_ARRAY_INDEX_LONG_ARRAY];
         while (longSize != 0) {
             v.int64Values.add((Long) values[indexOfValues]);
             indexOfValues++;
             longSize--;
         }
         /* configArray[6], 1 indicates the property has a Float value .
          * configArray[7], the number indicates the size of Float[] in the property.
          */
         int floatSize = configArray[CONFIG_ARRAY_INDEX_FLOAT]
                 + configArray[CONFIG_ARRAY_INDEX_FLOAT_ARRAY];
         while (floatSize != 0) {
             v.floatValues.add((Float) values[indexOfValues]);
             indexOfValues++;
             floatSize--;
         }

         /* configArray[8], the number indicates the size of byte[] in the property. */
         if (configArray[CONFIG_ARRAY_INDEX_BYTES] != 0) {
             Collections.addAll(v.bytes, (Byte[]) values[indexOfValues]);
         }
         return vehicleProp;
     }

     /**
      * Converts {@link VehiclePropConfig} to {@link CarPropertyConfig}.
      */
     static CarPropertyConfig<?> toCarPropertyConfig(VehiclePropConfig p, int propertyId) {
         int areaType = getVehicleAreaType(p.prop & VehicleArea.MASK);

         Class<?> clazz = getJavaClass(p.prop & VehiclePropertyType.MASK);
         float maxSampleRate = 0f;
         float minSampleRate = 0f;
         if (p.changeMode != CarPropertyConfig.VEHICLE_PROPERTY_CHANGE_MODE_STATIC) {
             maxSampleRate = p.maxSampleRate;
             minSampleRate = p.minSampleRate;
         }
         if (p.areaConfigs.isEmpty()) {
             return CarPropertyConfig
                     .newBuilder(clazz, propertyId, areaType, /* capacity */ 1)
                     .addAreas(DEFAULT_AREAIDS)
                     .setAccess(p.access)
                     .setChangeMode(p.changeMode)
                     .setConfigArray(p.configArray)
                     .setConfigString(p.configString)
                     .setMaxSampleRate(maxSampleRate)
                     .setMinSampleRate(minSampleRate)
                     .build();
         } else {
             CarPropertyConfig.Builder builder = CarPropertyConfig
                     .newBuilder(clazz, propertyId, areaType, /* capacity */ p.areaConfigs.size())
                     .setAccess(p.access)
                     .setChangeMode(p.changeMode)
                     .setConfigArray(p.configArray)
                     .setConfigString(p.configString)
                     .setMaxSampleRate(maxSampleRate)
                     .setMinSampleRate(minSampleRate);

             for (VehicleAreaConfig area : p.areaConfigs) {
                 if (classMatched(Integer.class, clazz)) {
                     builder.addAreaConfig(area.areaId, area.minInt32Value, area.maxInt32Value);
                 } else if (classMatched(Float.class, clazz)) {
                     builder.addAreaConfig(area.areaId, area.minFloatValue, area.maxFloatValue);
                 } else if (classMatched(Long.class, clazz)) {
                     builder.addAreaConfig(area.areaId, area.minInt64Value, area.maxInt64Value);
                 } else if (classMatched(Boolean.class, clazz)
                         || classMatched(Float[].class, clazz)
                         || classMatched(Integer[].class, clazz)
                         || classMatched(Long[].class, clazz)
                         || classMatched(String.class, clazz)
                         || classMatched(byte[].class, clazz)
                         || classMatched(Object[].class, clazz)) {
                     // These property types do not have min/max values
                     builder.addArea(area.areaId);
                 } else {
                     throw new IllegalArgumentException("Unexpected type: " + clazz);
                 }
             }
             return builder.build();
         }
     }

     private static @VehicleAreaType.VehicleAreaTypeValue int getVehicleAreaType(int halArea) {
         switch (halArea) {
             case VehicleArea.GLOBAL:
                 return VehicleAreaType.VEHICLE_AREA_TYPE_GLOBAL;
             case VehicleArea.SEAT:
                 return VehicleAreaType.VEHICLE_AREA_TYPE_SEAT;
             case VehicleArea.DOOR:
                 return VehicleAreaType.VEHICLE_AREA_TYPE_DOOR;
             case VehicleArea.WINDOW:
                 return VehicleAreaType.VEHICLE_AREA_TYPE_WINDOW;
             case VehicleArea.MIRROR:
                 return VehicleAreaType.VEHICLE_AREA_TYPE_MIRROR;
             case VehicleArea.WHEEL:
                 return VehicleAreaType.VEHICLE_AREA_TYPE_WHEEL;
             default:
                 throw new RuntimeException("Unsupported area type " + halArea);
         }
     }

     private static Class<?> getJavaClass(int halType) {
         switch (halType) {
             case VehiclePropertyType.BOOLEAN:
                 return Boolean.class;
             case VehiclePropertyType.FLOAT:
                 return Float.class;
             case VehiclePropertyType.INT32:
                 return Integer.class;
             case VehiclePropertyType.INT64:
                 return Long.class;
             case VehiclePropertyType.FLOAT_VEC:
                 return Float[].class;
             case VehiclePropertyType.INT32_VEC:
                 return Integer[].class;
             case VehiclePropertyType.INT64_VEC:
                 return Long[].class;
             case VehiclePropertyType.STRING:
                 return String.class;
             case VehiclePropertyType.BYTES:
                 return byte[].class;
             case VehiclePropertyType.MIXED:
                 return Object[].class;
             default:
                 throw new IllegalArgumentException("Unexpected type: " + toHexString(halType));
         }
     }

     private static boolean classMatched(Class<?> class1, Class<?> class2) {
         return class1 == class2 || class1.getComponentType() == class2;
     }
 }
	/*
	* Copyright (C) 2016 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 static com.android.car.CarServiceUtils.toByteArray;

	import static java.lang.Integer.toHexString;

	import android.car.VehicleAreaType;
	import android.car.hardware.CarPropertyConfig;
	import android.car.hardware.CarPropertyValue;
	import android.hardware.automotive.vehicle.V2_0.VehicleArea;
	import android.hardware.automotive.vehicle.V2_0.VehicleAreaConfig;
	import android.hardware.automotive.vehicle.V2_0.VehiclePropConfig;
	import android.hardware.automotive.vehicle.V2_0.VehiclePropValue;
	import android.hardware.automotive.vehicle.V2_0.VehiclePropertyType;

	import java.util.ArrayList;
	import java.util.Collections;
	import java.util.List;

	/**
	* Utility functions to work with {@link CarPropertyConfig} and {@link CarPropertyValue}
	*/
	/package/ final class CarPropertyUtils {

	/* Utility class has no public constructor */
	private CarPropertyUtils() {}

	private static final int[] DEFAULT_AREAIDS = {VehicleAreaType.VEHICLE_AREA_TYPE_GLOBAL};

	// configArray[0], 1 indicates the property has a String value
	private static final int CONFIG_ARRAY_INDEX_STRING = 0;
	// configArray[1], 1 indicates the property has a Boolean value .
	private static final int CONFIG_ARRAY_INDEX_BOOLEAN = 1;
	// configArray[2], 1 indicates the property has a Integer value.
	private static final int CONFIG_ARRAY_INDEX_INT = 2;
	// configArray[3], 1 indicates the property has a Integer[] value.
	private static final int CONFIG_ARRAY_INDEX_INT_ARRAY = 3;
	// configArray[4], 1 indicates the property has a Long value.
	private static final int CONFIG_ARRAY_INDEX_LONG = 4;
	// configArray[5], the number indicates the size of Long[] in the property.
	private static final int CONFIG_ARRAY_INDEX_LONG_ARRAY = 5;
	// configArray[6], 1 indicates the property has a Float value.
	private static final int CONFIG_ARRAY_INDEX_FLOAT = 6;
	// configArray[7], the number indicates the size of Float[] in the property.
	private static final int CONFIG_ARRAY_INDEX_FLOAT_ARRAY = 7;
	// configArray[8], the number indicates the size of byte[] in the property.
	private static final int CONFIG_ARRAY_INDEX_BYTES = 8;
	// Length of mixed type properties' configArray should always be 9
	private static final int CONFIG_ARRAY_LENGTH = 9;
	/** Converts {@link VehiclePropValue} to {@link CarPropertyValue} */
	static CarPropertyValue<?> toCarPropertyValue(
	VehiclePropValue halValue, int propertyId) {
	Class<?> clazz = getJavaClass(halValue.prop & VehiclePropertyType.MASK);
	int areaId = halValue.areaId;
	int status = halValue.status;
	long timestamp = halValue.timestamp;
	VehiclePropValue.RawValue v = halValue.value;

	// Handles each return value from {@link getJavaClass}.
	if (Boolean.class == clazz) {
	return new CarPropertyValue<>(propertyId, areaId, status, timestamp,
	v.int32Values.get(0) == 1);
	} else if (Float.class == clazz) {
	return new CarPropertyValue<>(propertyId, areaId, status, timestamp,
	v.floatValues.get(0));
	} else if (Integer.class == clazz) {
	return new CarPropertyValue<>(propertyId, areaId, status, timestamp,
	v.int32Values.get(0));
	} else if (Long.class == clazz) {
	return new CarPropertyValue<>(propertyId, areaId, status, timestamp,
	v.int64Values.get(0));
	} else if (Float[].class == clazz) {
	Float[] values = new Float[v.floatValues.size()];
	for (int i = 0; i < values.length; i++) {
	values[i] = v.floatValues.get(i);
	}
	return new CarPropertyValue<>(propertyId, areaId, status, timestamp, values);
	} else if (Integer[].class == clazz) {
	Integer[] values = new Integer[v.int32Values.size()];
	for (int i = 0; i < values.length; i++) {
	values[i] = v.int32Values.get(i);
	}
	return new CarPropertyValue<>(propertyId, areaId, status, timestamp, values);
	} else if (Long[].class == clazz) {
	Long[] values = new Long[v.int64Values.size()];
	for (int i = 0; i < values.length; i++) {
	values[i] = v.int64Values.get(i);
	}
	return new CarPropertyValue<>(propertyId, areaId, status, timestamp, values);
	} else if (String.class == clazz) {
	return new CarPropertyValue<>(propertyId, areaId, status, timestamp, v.stringValue);
	} else if (byte[].class == clazz) {
	byte[] halData = toByteArray(v.bytes);
	return new CarPropertyValue<>(propertyId, areaId, status, timestamp, halData);
	} else {
	throw new IllegalArgumentException("Unexpected type in: " + propertyId);
	}
	}

	/** Converts {@link VehiclePropValue} to {@link CarPropertyValue} for MIXED type properties*/
	static CarPropertyValue<?> toMixedCarPropertyValue(
	VehiclePropValue halValue, int propertyId, boolean containBoolean,
	boolean containString) {
	int areaId = halValue.areaId;
	int status = halValue.status;
	long timestamp = halValue.timestamp;
	VehiclePropValue.RawValue value = halValue.value;

	List<Object> valuesList = new ArrayList<>();
	if (containString) {
	valuesList.add(value.stringValue);
	}
	if (containBoolean) {
	boolean boolValue = value.int32Values.get(0) == 1;
	valuesList.add(boolValue);
	valuesList.addAll(value.int32Values.subList(1, value.int32Values.size()));
	} else {
	valuesList.addAll(value.int32Values);
	}
	valuesList.addAll(value.int64Values);
	valuesList.addAll(value.floatValues);
	valuesList.addAll(value.bytes);
	return new CarPropertyValue<>(propertyId, areaId, status, timestamp, valuesList.toArray());
	}

	/** Converts {@link CarPropertyValue} to {@link VehiclePropValue} */
	static VehiclePropValue toVehiclePropValue(CarPropertyValue carProp, int halPropId) {
	VehiclePropValue vehicleProp = new VehiclePropValue();
	vehicleProp.prop = halPropId;
	vehicleProp.areaId = carProp.getAreaId();
	VehiclePropValue.RawValue v = vehicleProp.value;

	Object o = carProp.getValue();

	if (o instanceof Boolean) {
	v.int32Values.add(((Boolean) o) ? 1 : 0);
	} else if (o instanceof Integer) {
	v.int32Values.add((Integer) o);
	} else if (o instanceof Integer[]) {
	Collections.addAll(v.int32Values, (Integer[]) o);
	} else if (o instanceof Float) {
	v.floatValues.add((Float) o);
	} else if (o instanceof Float[]) {
	Collections.addAll(v.floatValues, (Float[]) o);
	} else if (o instanceof Long) {
	v.int64Values.add((Long) o);
	} else if (o instanceof Long[]) {
	Collections.addAll(v.int64Values, (Long[]) o);
	} else if (o instanceof String) {
	v.stringValue = (String) o;
	} else if (o instanceof byte[]) {
	for (byte b : (byte[]) o) {
	v.bytes.add(b);
	}
	} else {
	throw new IllegalArgumentException("Unexpected type in: " + carProp);
	}

	return vehicleProp;
	}

	/**
	* Converts {@link CarPropertyValue} to {@link VehiclePropValue} for MIXED type properties
	* configArray[0], 1 indicates the property has a String value
	* configArray[1], 1 indicates the property has a Boolean value .
	* configArray[2], 1 indicates the property has a Integer value.
	* configArray[3], the number indicates the size of Integer[] in the property.
	* configArray[4], 1 indicates the property has a Long value .
	* configArray[5], the number indicates the size of Long[] in the property.
	* configArray[6], 1 indicates the property has a Float value .
	* configArray[7], the number indicates the size of Float[] in the property.
	* configArray[8], the number indicates the size of byte[] in the property.
	*
	* For example:
	* configArray = {1, 1, 1, 3, 0, 0, 0, 0, 0} indicates the property has a String value, a
	* Boolean value, an Integer value, an Integer array with 3 enums.
	*/
	static VehiclePropValue toMixedVehiclePropValue(CarPropertyValue carProp,
	int halPropId, int[] configArray) {
	if (configArray.length != CONFIG_ARRAY_LENGTH) {
	throw new IllegalArgumentException("Unexpected configArray in:" + carProp);
	}
	VehiclePropValue vehicleProp = new VehiclePropValue();
	vehicleProp.prop = halPropId;
	vehicleProp.areaId = carProp.getAreaId();
	VehiclePropValue.RawValue v = vehicleProp.value;

	Object[] values = (Object[]) carProp.getValue();
	int indexOfValues = 0;
	if (configArray[CONFIG_ARRAY_INDEX_STRING] != 0) {
	// Add a string value
	v.stringValue = (String) values[indexOfValues];
	indexOfValues++;
	}

	if (configArray[CONFIG_ARRAY_INDEX_BOOLEAN] != 0) {
	// Add a boolean value
	v.int32Values.add((Boolean) values[indexOfValues] ? 1 : 0); // in HAL, 1 indicates true
	indexOfValues++;
	}

	/*
	* configArray[2], 1 indicates the property has a Integer value.
	* configArray[3], the number indicates the size of Integer[] in the property.
	*/
	int integerSize = configArray[CONFIG_ARRAY_INDEX_INT]
	+ configArray[CONFIG_ARRAY_INDEX_INT_ARRAY];
	while (integerSize != 0) {
	v.int32Values.add((Integer) values[indexOfValues]);
	indexOfValues++;
	integerSize--;
	}
	/* configArray[4], 1 indicates the property has a Long value .
	* configArray[5], the number indicates the size of Long[] in the property.
	*/
	int longSize = configArray[CONFIG_ARRAY_INDEX_LONG]
	+ configArray[CONFIG_ARRAY_INDEX_LONG_ARRAY];
	while (longSize != 0) {
	v.int64Values.add((Long) values[indexOfValues]);
	indexOfValues++;
	longSize--;
	}
	/* configArray[6], 1 indicates the property has a Float value .
	* configArray[7], the number indicates the size of Float[] in the property.
	*/
	int floatSize = configArray[CONFIG_ARRAY_INDEX_FLOAT]
	+ configArray[CONFIG_ARRAY_INDEX_FLOAT_ARRAY];
	while (floatSize != 0) {
	v.floatValues.add((Float) values[indexOfValues]);
	indexOfValues++;
	floatSize--;
	}

	/* configArray[8], the number indicates the size of byte[] in the property. */
	if (configArray[CONFIG_ARRAY_INDEX_BYTES] != 0) {
	Collections.addAll(v.bytes, (Byte[]) values[indexOfValues]);
	}
	return vehicleProp;
	}

	/**
	* Converts {@link VehiclePropConfig} to {@link CarPropertyConfig}.
	*/
	static CarPropertyConfig<?> toCarPropertyConfig(VehiclePropConfig p, int propertyId) {
	int areaType = getVehicleAreaType(p.prop & VehicleArea.MASK);

	Class<?> clazz = getJavaClass(p.prop & VehiclePropertyType.MASK);
	float maxSampleRate = 0f;
	float minSampleRate = 0f;
	if (p.changeMode != CarPropertyConfig.VEHICLE_PROPERTY_CHANGE_MODE_STATIC) {
	maxSampleRate = p.maxSampleRate;
	minSampleRate = p.minSampleRate;
	}
	if (p.areaConfigs.isEmpty()) {
	return CarPropertyConfig
	.newBuilder(clazz, propertyId, areaType, /* capacity */ 1)
	.addAreas(DEFAULT_AREAIDS)
	.setAccess(p.access)
	.setChangeMode(p.changeMode)
	.setConfigArray(p.configArray)
	.setConfigString(p.configString)
	.setMaxSampleRate(maxSampleRate)
	.setMinSampleRate(minSampleRate)
	.build();
	} else {
	CarPropertyConfig.Builder builder = CarPropertyConfig
	.newBuilder(clazz, propertyId, areaType, /* capacity */ p.areaConfigs.size())
	.setAccess(p.access)
	.setChangeMode(p.changeMode)
	.setConfigArray(p.configArray)
	.setConfigString(p.configString)
	.setMaxSampleRate(maxSampleRate)
	.setMinSampleRate(minSampleRate);

	for (VehicleAreaConfig area : p.areaConfigs) {
	if (classMatched(Integer.class, clazz)) {
	builder.addAreaConfig(area.areaId, area.minInt32Value, area.maxInt32Value);
	} else if (classMatched(Float.class, clazz)) {
	builder.addAreaConfig(area.areaId, area.minFloatValue, area.maxFloatValue);
	} else if (classMatched(Long.class, clazz)) {
	builder.addAreaConfig(area.areaId, area.minInt64Value, area.maxInt64Value);
	} else if (classMatched(Boolean.class, clazz)
	\|\| classMatched(Float[].class, clazz)
	\|\| classMatched(Integer[].class, clazz)
	\|\| classMatched(Long[].class, clazz)
	\|\| classMatched(String.class, clazz)
	\|\| classMatched(byte[].class, clazz)
	\|\| classMatched(Object[].class, clazz)) {
	// These property types do not have min/max values
	builder.addArea(area.areaId);
	} else {
	throw new IllegalArgumentException("Unexpected type: " + clazz);
	}
	}
	return builder.build();
	}
	}

	private static @VehicleAreaType.VehicleAreaTypeValue int getVehicleAreaType(int halArea) {
	switch (halArea) {
	case VehicleArea.GLOBAL:
	return VehicleAreaType.VEHICLE_AREA_TYPE_GLOBAL;
	case VehicleArea.SEAT:
	return VehicleAreaType.VEHICLE_AREA_TYPE_SEAT;
	case VehicleArea.DOOR:
	return VehicleAreaType.VEHICLE_AREA_TYPE_DOOR;
	case VehicleArea.WINDOW:
	return VehicleAreaType.VEHICLE_AREA_TYPE_WINDOW;
	case VehicleArea.MIRROR:
	return VehicleAreaType.VEHICLE_AREA_TYPE_MIRROR;
	case VehicleArea.WHEEL:
	return VehicleAreaType.VEHICLE_AREA_TYPE_WHEEL;
	default:
	throw new RuntimeException("Unsupported area type " + halArea);
	}
	}

	private static Class<?> getJavaClass(int halType) {
	switch (halType) {
	case VehiclePropertyType.BOOLEAN:
	return Boolean.class;
	case VehiclePropertyType.FLOAT:
	return Float.class;
	case VehiclePropertyType.INT32:
	return Integer.class;
	case VehiclePropertyType.INT64:
	return Long.class;
	case VehiclePropertyType.FLOAT_VEC:
	return Float[].class;
	case VehiclePropertyType.INT32_VEC:
	return Integer[].class;
	case VehiclePropertyType.INT64_VEC:
	return Long[].class;
	case VehiclePropertyType.STRING:
	return String.class;
	case VehiclePropertyType.BYTES:
	return byte[].class;
	case VehiclePropertyType.MIXED:
	return Object[].class;
	default:
	throw new IllegalArgumentException("Unexpected type: " + toHexString(halType));
	}
	}

	private static boolean classMatched(Class<?> class1, Class<?> class2) {
	return class1 == class2 \|\| class1.getComponentType() == class2;
	}
	}