Initial HIDL vehicle HAL

Bug: b/31803520
Test: writing a test client in upcoming CLs

Change-Id: I050ab2d764f4550c5d0417c892d05d95472c9b7f
diff --git a/vehicle/2.0/default/VehicleUtils.h b/vehicle/2.0/default/VehicleUtils.h
new file mode 100644
index 0000000..78e34e5
--- /dev/null
+++ b/vehicle/2.0/default/VehicleUtils.h
@@ -0,0 +1,90 @@
+/*
+ * 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.
+ */
+
+#ifndef android_hardware_vehicle_V2_0_VehicleUtils_H_
+#define android_hardware_vehicle_V2_0_VehicleUtils_H_
+
+#include <hidl/HidlSupport.h>
+#include <android/hardware/vehicle/2.0/types.h>
+
+namespace android {
+namespace hardware {
+namespace vehicle {
+namespace V2_0 {
+
+hidl_string init_hidl_string(const char *cstr) {
+    hidl_string hidlString;
+    hidlString = cstr;
+    return hidlString;
+}
+
+template <typename T>
+hidl_vec<T> init_hidl_vec(std::initializer_list<T> values) {
+    hidl_vec<T> vector;
+    vector.resize(values.size());
+    size_t i = 0;
+    for (auto& c : values) {
+        vector[i++] = c;
+    }
+    return vector;
+}
+
+// OR operator for class enums. The return type will be enum's underline type.
+template <typename ENUM>
+typename std::underlying_type<ENUM>::type operator |(ENUM v1, ENUM v2) {
+    return static_cast<typename std::underlying_type<ENUM>::type>(v1)
+           | static_cast<typename std::underlying_type<ENUM>::type>(v2);
+}
+
+// AND operator for class enums. The return type will be enum's underline type.
+template <typename ENUM>
+typename std::underlying_type<ENUM>::type operator &(ENUM v1, ENUM v2) {
+    return static_cast<typename std::underlying_type<ENUM>::type>(v1)
+           | static_cast<typename std::underlying_type<ENUM>::type>(v2);
+}
+
+// Returns underlying (integer) value for given enum.
+template <typename ENUM>
+typename std::underlying_type<ENUM>::type enum_val(ENUM const value)
+{
+    return static_cast<typename std::underlying_type<ENUM>::type>(value);
+}
+
+VehiclePropertyType getPropType(VehicleProperty prop) {
+    return static_cast<VehiclePropertyType>(
+        static_cast<int32_t>(prop) & static_cast<int32_t>(VehiclePropertyType::MASK));
+}
+
+VehiclePropertyGroup getPropGroup(VehicleProperty prop) {
+    return static_cast<VehiclePropertyGroup>(
+        static_cast<int32_t>(prop) & static_cast<int32_t>(VehiclePropertyGroup::MASK));
+}
+
+bool checkPropType(VehicleProperty prop, VehiclePropertyType type) {
+    return getPropType(prop) == type;
+}
+
+bool isSystemProperty(VehicleProperty prop) {
+    return VehiclePropertyGroup::SYSTEM == getPropGroup(prop);
+}
+
+
+}  // namespace V2_0
+}  // namespace vehicle
+}  // namespace hardware
+}  // namespace android
+
+#endif android_hardware_vehicle_V2_0_VehicleUtils_H_