Move Vehicle HAL under automotive package

Test: verified unit tests and VTS are passing

Bug: b/33200203
Change-Id: I69cc4bc0d4cbc1a6bf2f77564a8f70412fe06947
diff --git a/automotive/vehicle/2.0/default/VehicleHal.h b/automotive/vehicle/2.0/default/VehicleHal.h
new file mode 100644
index 0000000..76df5b8
--- /dev/null
+++ b/automotive/vehicle/2.0/default/VehicleHal.h
@@ -0,0 +1,116 @@
+/*
+ * 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_automotive_vehicle_V2_0_VehicleHal_H
+#define android_hardware_automotive_vehicle_V2_0_VehicleHal_H
+
+#include <android/hardware/automotive/vehicle/2.0/IVehicle.h>
+#include "vehicle_hal_manager/VehicleObjectPool.h"
+
+
+namespace android {
+namespace hardware {
+namespace automotive {
+namespace vehicle {
+namespace V2_0 {
+
+/**
+ * This is a low-level vehicle hal interface that should be implemented by
+ * Vendor.
+ */
+class VehicleHal {
+public:
+    using VehiclePropValuePtr = recyclable_ptr<VehiclePropValue>;
+
+    using HalEventFunction = std::function<void(VehiclePropValuePtr)>;
+    using HalErrorFunction = std::function<void(
+            StatusCode errorCode, int32_t property, int32_t areaId)>;
+
+    virtual ~VehicleHal() {}
+
+    virtual std::vector<VehiclePropConfig> listProperties() = 0;
+    virtual VehiclePropValuePtr get(const VehiclePropValue& requestedPropValue,
+                                    StatusCode* outStatus) = 0;
+
+    virtual StatusCode set(const VehiclePropValue& propValue) = 0;
+
+    /**
+     * Subscribe to HAL property events. This method might be called multiple
+     * times for the same vehicle property to update subscribed areas or sample
+     * rate.
+     *
+     * @param property to subscribe
+     * @param areas a bitwise vehicle areas or 0 for all supported areas
+     * @param sampleRate sample rate in Hz for properties that support sample
+     *                   rate, e.g. for properties with
+     *                   VehiclePropertyChangeMode::CONTINUOUS
+     */
+    virtual StatusCode subscribe(int32_t property,
+                                 int32_t areas,
+                                 float sampleRate) = 0;
+
+    /**
+     * Unsubscribe from HAL events for given property
+     *
+     * @param property vehicle property to unsubscribe
+     */
+    virtual StatusCode unsubscribe(int32_t property) = 0;
+
+    /**
+     * Override this method if you need to do one-time initialization.
+     */
+    virtual void onCreate() {}
+
+    void init(
+        VehiclePropValuePool* valueObjectPool,
+        const HalEventFunction& onHalEvent,
+        const HalErrorFunction& onHalError) {
+        mValuePool = valueObjectPool;
+        mOnHalEvent = onHalEvent;
+        mOnHalPropertySetError = onHalError;
+
+        onCreate();
+    }
+
+    VehiclePropValuePool* getValuePool() {
+        return mValuePool;
+    }
+protected:
+    /* Propagates property change events to vehicle HAL clients. */
+    void doHalEvent(VehiclePropValuePtr v) {
+        mOnHalEvent(std::move(v));
+    }
+
+    /* Propagates error during set operation to the vehicle HAL clients. */
+    void doHalPropertySetError(StatusCode errorCode,
+                               int32_t propId,
+                               int32_t areaId) {
+        mOnHalPropertySetError(errorCode, propId, areaId);
+    }
+
+private:
+    HalEventFunction mOnHalEvent;
+    HalErrorFunction mOnHalPropertySetError;
+    VehiclePropValuePool* mValuePool;
+};
+
+}  // namespace V2_0
+}  // namespace vehicle
+}  // namespace automotive
+}  // namespace hardware
+}  // namespace android
+
+#endif //android_hardware_automotive_vehicle_V2_0_VehicleHal_H_