Merge changes I5608414d,I8c809c35,Iec353322

* changes:
  Implement SensorsWrapperV1_0 and SensorsWrapperV2_0
  Defines ISensorsWrapper
  Remove "using namespace SensorServiceUtil"
diff --git a/services/sensorservice/Android.bp b/services/sensorservice/Android.bp
index a7f3a52..a6b9533 100644
--- a/services/sensorservice/Android.bp
+++ b/services/sensorservice/Android.bp
@@ -47,6 +47,7 @@
         "libhidltransport",
         "libhwbinder",
         "android.hardware.sensors@1.0",
+        "android.hardware.sensors@2.0",
     ],
 
     static_libs: ["android.hardware.sensors@1.0-convert"],
diff --git a/services/sensorservice/SensorService.cpp b/services/sensorservice/SensorService.cpp
index 372b609..3822ee1 100644
--- a/services/sensorservice/SensorService.cpp
+++ b/services/sensorservice/SensorService.cpp
@@ -306,7 +306,7 @@
     int handle = s->getSensor().getHandle();
     int type = s->getSensor().getType();
     if (mSensors.add(handle, s, isDebug, isVirtual)){
-        mRecentEvent.emplace(handle, new RecentEventLogger(type));
+        mRecentEvent.emplace(handle, new SensorServiceUtil::RecentEventLogger(type));
         return s->getSensor();
     } else {
         return mSensors.getNonSensor();
diff --git a/services/sensorservice/SensorService.h b/services/sensorservice/SensorService.h
index f71723d..db945bb 100644
--- a/services/sensorservice/SensorService.h
+++ b/services/sensorservice/SensorService.h
@@ -59,7 +59,6 @@
 namespace android {
 // ---------------------------------------------------------------------------
 class SensorInterface;
-using namespace SensorServiceUtil;
 
 class SensorService :
         public BinderService<SensorService>,
@@ -277,7 +276,7 @@
     static uint8_t sHmacGlobalKey[128];
     static bool sHmacGlobalKeyIsValid;
 
-    SensorList mSensors;
+    SensorServiceUtil::SensorList mSensors;
     status_t mInitCheck;
 
     // Socket buffersize used to initialize BitTube. This size depends on whether batching is
@@ -294,7 +293,7 @@
     bool mWakeLockAcquired;
     sensors_event_t *mSensorEventBuffer, *mSensorEventScratch;
     wp<const SensorEventConnection> * mMapFlushEventsToConnections;
-    std::unordered_map<int, RecentEventLogger*> mRecentEvent;
+    std::unordered_map<int, SensorServiceUtil::RecentEventLogger*> mRecentEvent;
     SortedVector< wp<SensorDirectConnection> > mDirectConnections;
     Mode mCurrentOperatingMode;
 
diff --git a/services/sensorservice/SensorsWrapper.h b/services/sensorservice/SensorsWrapper.h
new file mode 100644
index 0000000..f3fa164
--- /dev/null
+++ b/services/sensorservice/SensorsWrapper.h
@@ -0,0 +1,190 @@
+/*
+ * Copyright (C) 2018 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_SENSORS_WRAPPER_H
+#define ANDROID_SENSORS_WRAPPER_H
+
+#include "android/hardware/sensors/1.0/ISensors.h"
+#include "android/hardware/sensors/2.0/ISensors.h"
+
+#include <utils/LightRefBase.h>
+
+namespace android {
+namespace SensorServiceUtil {
+
+using ::android::hardware::MQDescriptorSync;
+using ::android::hardware::Return;
+using ::android::hardware::sensors::V1_0::Event;
+using ::android::hardware::sensors::V1_0::ISensors;
+using ::android::hardware::sensors::V1_0::OperationMode;
+using ::android::hardware::sensors::V1_0::RateLevel;
+using ::android::hardware::sensors::V1_0::Result;
+using ::android::hardware::sensors::V1_0::SharedMemInfo;
+
+/*
+ * The ISensorsWrapper interface includes all function from supported Sensors HAL versions. This
+ * allows for the SensorDevice to use the ISensorsWrapper interface to interact with the Sensors
+ * HAL regardless of the current version of the Sensors HAL that is loaded. Each concrete
+ * instantiation of ISensorsWrapper must correspond to a specific Sensors HAL version. This design
+ * is beneficial because only the functions that change between Sensors HAL versions must be newly
+ * newly implemented, any previously implemented function that does not change may remain the same.
+ *
+ * Functions that exist across all versions of the Sensors HAL should be implemented as pure
+ * virtual functions which forces the concrete instantiations to implement the functions.
+ *
+ * Functions that do not exist across all versions of the Sensors HAL should include a default
+ * implementation that generates an error if called. The default implementation should never
+ * be called and must be overridden by Sensors HAL versions that support the function.
+ */
+class ISensorsWrapper : public VirtualLightRefBase {
+public:
+    virtual bool supportsPolling() const = 0;
+
+    virtual bool supportsMessageQueues() const = 0;
+
+    virtual Return<void> getSensorsList(ISensors::getSensorsList_cb _hidl_cb) = 0;
+
+    virtual Return<Result> setOperationMode(OperationMode mode) = 0;
+
+    virtual Return<Result> activate(int32_t sensorHandle, bool enabled) = 0;
+
+    virtual Return<Result> batch(int32_t sensorHandle, int64_t samplingPeriodNs,
+                                 int64_t maxReportLatencyNs) = 0;
+
+    virtual Return<Result> flush(int32_t sensorHandle) = 0;
+
+    virtual Return<Result> injectSensorData(const Event& event) = 0;
+
+    virtual Return<void> registerDirectChannel(const SharedMemInfo& mem,
+                                               ISensors::registerDirectChannel_cb _hidl_cb) = 0;
+
+    virtual Return<Result> unregisterDirectChannel(int32_t channelHandle) = 0;
+
+    virtual Return<void> configDirectReport(int32_t sensorHandle, int32_t channelHandle,
+                                            RateLevel rate,
+                                            ISensors::configDirectReport_cb _hidl_cb) = 0;
+
+    virtual Return<void> poll(int32_t maxCount, ISensors::poll_cb _hidl_cb) {
+        (void)maxCount;
+        (void)_hidl_cb;
+        // TODO (b/111070257): Generate an assert-level error since this should never be called
+        // directly
+        return Return<void>();
+    }
+
+    virtual Return<Result> initializeMessageQueues(const MQDescriptorSync<Event>& eventQueueDesc,
+                                                   const MQDescriptorSync<uint32_t>& wakeLockDesc) {
+        (void)eventQueueDesc;
+        (void)wakeLockDesc;
+        // TODO (b/111070257): Generate an assert-level error since this should never be called
+        // directly
+        return Result::INVALID_OPERATION;
+    }
+};
+
+template<typename T>
+class SensorsWrapperBase : public ISensorsWrapper {
+public:
+    SensorsWrapperBase(sp<T> sensors) :
+        mSensors(sensors) { };
+
+    Return<void> getSensorsList(ISensors::getSensorsList_cb _hidl_cb) override {
+        return mSensors->getSensorsList(_hidl_cb);
+    }
+
+    Return<Result> setOperationMode(OperationMode mode) override {
+        return mSensors->setOperationMode(mode);
+    }
+
+    Return<Result> activate(int32_t sensorHandle, bool enabled) override {
+        return mSensors->activate(sensorHandle, enabled);
+    }
+
+    Return<Result> batch(int32_t sensorHandle, int64_t samplingPeriodNs,
+                         int64_t maxReportLatencyNs) override {
+        return mSensors->batch(sensorHandle, samplingPeriodNs, maxReportLatencyNs);
+    }
+
+    Return<Result> flush(int32_t sensorHandle) override {
+        return mSensors->flush(sensorHandle);
+    }
+
+    Return<Result> injectSensorData(const Event& event) override {
+        return mSensors->injectSensorData(event);
+    }
+
+    Return<void> registerDirectChannel(const SharedMemInfo& mem,
+                                       ISensors::registerDirectChannel_cb _hidl_cb) override {
+        return mSensors->registerDirectChannel(mem, _hidl_cb);
+    }
+
+    Return<Result> unregisterDirectChannel(int32_t channelHandle) override {
+        return mSensors->unregisterDirectChannel(channelHandle);
+    }
+
+    Return<void> configDirectReport(int32_t sensorHandle, int32_t channelHandle,
+                                    RateLevel rate,
+                                    ISensors::configDirectReport_cb _hidl_cb) override {
+        return mSensors->configDirectReport(sensorHandle, channelHandle, rate, _hidl_cb);
+    }
+
+protected:
+    sp<T> mSensors;
+};
+
+class SensorsWrapperV1_0 : public SensorsWrapperBase<hardware::sensors::V1_0::ISensors> {
+public:
+    SensorsWrapperV1_0(sp<hardware::sensors::V1_0::ISensors> sensors) :
+        SensorsWrapperBase(sensors) { };
+
+    bool supportsPolling() const override {
+        return true;
+    }
+
+    bool supportsMessageQueues() const override {
+        return false;
+    }
+
+    Return<void> poll(int32_t maxCount,
+                      hardware::sensors::V1_0::ISensors::poll_cb _hidl_cb) override {
+        return mSensors->poll(maxCount, _hidl_cb);
+    }
+};
+
+class SensorsWrapperV2_0 : public SensorsWrapperBase<hardware::sensors::V2_0::ISensors> {
+public:
+    SensorsWrapperV2_0(sp<hardware::sensors::V2_0::ISensors> sensors)
+        : SensorsWrapperBase(sensors) { };
+
+    bool supportsPolling() const override {
+        return false;
+    }
+
+    bool supportsMessageQueues() const override {
+        return true;
+    }
+
+    Return<Result> initializeMessageQueues(
+            const MQDescriptorSync<Event>& eventQueueDesc,
+            const MQDescriptorSync<uint32_t>& wakeLockDesc) override {
+        return mSensors->initializeMessageQueues(eventQueueDesc, wakeLockDesc);
+    }
+};
+
+}; // namespace SensorServiceUtil
+}; // namespace android
+
+#endif // ANDROID_SENSORS_WRAPPER_H