Some fixes to power manager lib code

- Run clang-format on all recently added files;
- Move all new classes to android::power namespace and remove Power
prefix from all classes and enums;
- Add virtual function specifier to overrides of virtual members;
- Add missing virtual destructors;
- Remove namespaces and aliases from public api of header files;
- Delete constructor and destructor of PowerHalLoader;
- Add helper functions to convert hal results in wrapper
implementations;
- Merge test targets to single libpowermanager_test target;

Bug: 150878220
Test: atest libpowermanager_test
Change-Id: Ie2b5ad69f3b05d5f6b576671bc98e0f83b274152
diff --git a/include/powermanager/PowerHalController.h b/include/powermanager/PowerHalController.h
index 44b8915..dd34c0a 100644
--- a/include/powermanager/PowerHalController.h
+++ b/include/powermanager/PowerHalController.h
@@ -21,58 +21,59 @@
 #include <android/hardware/power/Boost.h>
 #include <android/hardware/power/IPower.h>
 #include <android/hardware/power/Mode.h>
-
 #include <powermanager/PowerHalWrapper.h>
 
-using android::hardware::power::Boost;
-using android::hardware::power::Mode;
-using android::hardware::power::V1_0::Feature;
-using android::hardware::power::V1_0::PowerHint;
-
 namespace android {
 
+namespace power {
+
 // -------------------------------------------------------------------------------------------------
 
 // Connects to underlying Power HAL handles.
-class PowerHalConnector {
+class HalConnector {
 public:
-    PowerHalConnector() = default;
-    virtual ~PowerHalConnector() = default;
+    HalConnector() = default;
+    virtual ~HalConnector() = default;
 
-    virtual std::unique_ptr<PowerHalWrapper> connect();
+    virtual std::unique_ptr<HalWrapper> connect();
     virtual void reset();
 };
 
 // -------------------------------------------------------------------------------------------------
 
 // Controller for Power HAL handle.
-// This relies on PowerHalConnector to connect to the underlying Power HAL service and reconnects to
-// it after each failed api call. This also ensures connecting to the service is thread-safe.
-class PowerHalController : public PowerHalWrapper {
+// This relies on HalConnector to connect to the underlying Power HAL
+// service and reconnects to it after each failed api call. This also ensures
+// connecting to the service is thread-safe.
+class PowerHalController : public HalWrapper {
 public:
-    PowerHalController() : PowerHalController(std::make_unique<PowerHalConnector>()) {}
-    explicit PowerHalController(std::unique_ptr<PowerHalConnector> connector)
-        : mHalConnector(std::move(connector)) {}
+    PowerHalController() : PowerHalController(std::make_unique<HalConnector>()) {}
+    explicit PowerHalController(std::unique_ptr<HalConnector> connector)
+          : mHalConnector(std::move(connector)) {}
+    virtual ~PowerHalController() = default;
 
     void init();
 
-    PowerHalResult setBoost(Boost boost, int32_t durationMs) override;
-    PowerHalResult setMode(Mode mode, bool enabled) override;
+    virtual HalResult setBoost(hardware::power::Boost boost, int32_t durationMs) override;
+    virtual HalResult setMode(hardware::power::Mode mode, bool enabled) override;
 
 private:
     std::mutex mConnectedHalMutex;
-    std::unique_ptr<PowerHalConnector> mHalConnector;
+    std::unique_ptr<HalConnector> mHalConnector;
 
-    // Shared pointers to keep global pointer and allow local copies to be used in different threads
-    std::shared_ptr<PowerHalWrapper> mConnectedHal GUARDED_BY(mConnectedHalMutex) = nullptr;
-    const std::shared_ptr<PowerHalWrapper> mDefaultHal = std::make_shared<EmptyPowerHalWrapper>();
+    // Shared pointers to keep global pointer and allow local copies to be used in
+    // different threads
+    std::shared_ptr<HalWrapper> mConnectedHal GUARDED_BY(mConnectedHalMutex) = nullptr;
+    const std::shared_ptr<HalWrapper> mDefaultHal = std::make_shared<EmptyHalWrapper>();
 
-    std::shared_ptr<PowerHalWrapper> initHal();
-    PowerHalResult processHalResult(PowerHalResult result, const char* functionName);
+    std::shared_ptr<HalWrapper> initHal();
+    HalResult processHalResult(HalResult result, const char* functionName);
 };
 
 // -------------------------------------------------------------------------------------------------
 
+}; // namespace power
+
 }; // namespace android
 
 #endif // ANDROID_POWERHALCONTROLLER_H
diff --git a/include/powermanager/PowerHalLoader.h b/include/powermanager/PowerHalLoader.h
index 487b95b..ed6f6f3 100644
--- a/include/powermanager/PowerHalLoader.h
+++ b/include/powermanager/PowerHalLoader.h
@@ -18,35 +18,36 @@
 #define ANDROID_POWERHALLOADER_H
 
 #include <android-base/thread_annotations.h>
-
 #include <android/hardware/power/1.1/IPower.h>
 #include <android/hardware/power/IPower.h>
 
-using IPowerV1_0 = android::hardware::power::V1_0::IPower;
-using IPowerV1_1 = android::hardware::power::V1_1::IPower;
-using IPowerAidl = android::hardware::power::IPower;
-
 namespace android {
 
+namespace power {
+
 // Loads available Power HAL services.
 class PowerHalLoader {
 public:
     static void unloadAll();
-    static sp<IPowerAidl> loadAidl();
-    static sp<IPowerV1_0> loadHidlV1_0();
-    static sp<IPowerV1_1> loadHidlV1_1();
+    static sp<hardware::power::IPower> loadAidl();
+    static sp<hardware::power::V1_0::IPower> loadHidlV1_0();
+    static sp<hardware::power::V1_1::IPower> loadHidlV1_1();
 
 private:
     static std::mutex gHalMutex;
-    static sp<IPowerAidl> gHalAidl GUARDED_BY(gHalMutex);
-    static sp<IPowerV1_0> gHalHidlV1_0 GUARDED_BY(gHalMutex);
-    static sp<IPowerV1_1> gHalHidlV1_1 GUARDED_BY(gHalMutex);
+    static sp<hardware::power::IPower> gHalAidl GUARDED_BY(gHalMutex);
+    static sp<hardware::power::V1_0::IPower> gHalHidlV1_0 GUARDED_BY(gHalMutex);
+    static sp<hardware::power::V1_1::IPower> gHalHidlV1_1 GUARDED_BY(gHalMutex);
 
-    static sp<IPowerV1_0> loadHidlV1_0Locked() EXCLUSIVE_LOCKS_REQUIRED(gHalMutex);
+    static sp<hardware::power::V1_0::IPower> loadHidlV1_0Locked()
+            EXCLUSIVE_LOCKS_REQUIRED(gHalMutex);
 
-    PowerHalLoader() = default;
+    PowerHalLoader() = delete;
+    ~PowerHalLoader() = delete;
 };
 
+}; // namespace power
+
 } // namespace android
 
 #endif // ANDROID_POWERHALLOADER_H
diff --git a/include/powermanager/PowerHalWrapper.h b/include/powermanager/PowerHalWrapper.h
index 6d8a6eb..c3e7601 100644
--- a/include/powermanager/PowerHalWrapper.h
+++ b/include/powermanager/PowerHalWrapper.h
@@ -18,111 +18,111 @@
 #define ANDROID_POWERHALWRAPPER_H
 
 #include <android-base/thread_annotations.h>
-
 #include <android/hardware/power/1.1/IPower.h>
 #include <android/hardware/power/Boost.h>
 #include <android/hardware/power/IPower.h>
 #include <android/hardware/power/Mode.h>
 
-using android::hardware::power::Boost;
-using android::hardware::power::Mode;
-using android::hardware::power::V1_0::Feature;
-using android::hardware::power::V1_0::PowerHint;
-using IPowerV1_1 = android::hardware::power::V1_1::IPower;
-using IPowerV1_0 = android::hardware::power::V1_0::IPower;
-using IPowerAidl = android::hardware::power::IPower;
-
 namespace android {
 
+namespace power {
+
 // State of Power HAL support for individual apis.
-enum class PowerHalSupport {
+enum class HalSupport {
     UNKNOWN = 0,
     ON = 1,
     OFF = 2,
 };
 
 // State of the Power HAL api call result.
-enum class PowerHalResult {
+enum class HalResult {
     SUCCESSFUL = 0,
     FAILED = 1,
     UNSUPPORTED = 2,
 };
 
 // Wrapper for Power HAL handlers.
-class PowerHalWrapper {
+class HalWrapper {
 public:
-    virtual ~PowerHalWrapper() = default;
+    virtual ~HalWrapper() = default;
 
-    virtual PowerHalResult setBoost(Boost boost, int32_t durationMs) = 0;
-    virtual PowerHalResult setMode(Mode mode, bool enabled) = 0;
+    virtual HalResult setBoost(hardware::power::Boost boost, int32_t durationMs) = 0;
+    virtual HalResult setMode(hardware::power::Mode mode, bool enabled) = 0;
 };
 
 // Empty Power HAL wrapper that ignores all api calls.
-class EmptyPowerHalWrapper : public PowerHalWrapper {
+class EmptyHalWrapper : public HalWrapper {
 public:
-    EmptyPowerHalWrapper() = default;
-    ~EmptyPowerHalWrapper() = default;
+    EmptyHalWrapper() = default;
+    ~EmptyHalWrapper() = default;
 
-    PowerHalResult setBoost(Boost boost, int32_t durationMs) override;
-    PowerHalResult setMode(Mode mode, bool enabled) override;
+    virtual HalResult setBoost(hardware::power::Boost boost, int32_t durationMs) override;
+    virtual HalResult setMode(hardware::power::Mode mode, bool enabled) override;
 };
 
 // Wrapper for the HIDL Power HAL v1.0.
-class HidlPowerHalWrapperV1_0 : public PowerHalWrapper {
+class HidlHalWrapperV1_0 : public HalWrapper {
 public:
-    explicit HidlPowerHalWrapperV1_0(sp<IPowerV1_0> powerHal) : handleV1_0(std::move(powerHal)) {}
-    virtual ~HidlPowerHalWrapperV1_0() = default;
+    explicit HidlHalWrapperV1_0(sp<hardware::power::V1_0::IPower> Hal)
+          : mHandleV1_0(std::move(Hal)) {}
+    virtual ~HidlHalWrapperV1_0() = default;
 
-    PowerHalResult setBoost(Boost boost, int32_t durationMs) override;
-    PowerHalResult setMode(Mode mode, bool enabled) override;
+    virtual HalResult setBoost(hardware::power::Boost boost, int32_t durationMs) override;
+    virtual HalResult setMode(hardware::power::Mode mode, bool enabled) override;
 
 protected:
-    virtual PowerHalResult sendPowerHint(PowerHint hintId, uint32_t data);
+    virtual HalResult sendPowerHint(hardware::power::V1_0::PowerHint hintId, uint32_t data);
 
 private:
-    sp<IPowerV1_0> handleV1_0;
-    PowerHalResult setInteractive(bool enabled);
-    PowerHalResult setFeature(Feature feature, bool enabled);
+    sp<hardware::power::V1_0::IPower> mHandleV1_0;
+    HalResult setInteractive(bool enabled);
+    HalResult setFeature(hardware::power::V1_0::Feature feature, bool enabled);
 };
 
 // Wrapper for the HIDL Power HAL v1.1.
-class HidlPowerHalWrapperV1_1 : public HidlPowerHalWrapperV1_0 {
+class HidlHalWrapperV1_1 : public HidlHalWrapperV1_0 {
 public:
-    HidlPowerHalWrapperV1_1(sp<IPowerV1_0> powerHalV1_0, sp<IPowerV1_1> powerHalV1_1)
-        : HidlPowerHalWrapperV1_0(powerHalV1_0), handleV1_1(std::move(powerHalV1_1)) {}
-    ~HidlPowerHalWrapperV1_1() = default;
+    HidlHalWrapperV1_1(sp<hardware::power::V1_0::IPower> handleV1_0,
+                       sp<hardware::power::V1_1::IPower> handleV1_1)
+          : HidlHalWrapperV1_0(std::move(handleV1_0)), mHandleV1_1(std::move(handleV1_1)) {}
+    virtual ~HidlHalWrapperV1_1() = default;
 
 protected:
-    virtual PowerHalResult sendPowerHint(PowerHint hintId, uint32_t data) override;
+    virtual HalResult sendPowerHint(hardware::power::V1_0::PowerHint hintId,
+                                    uint32_t data) override;
 
 private:
-    sp<IPowerV1_1> handleV1_1;
+    sp<hardware::power::V1_1::IPower> mHandleV1_1;
 };
 
 // Wrapper for the AIDL Power HAL.
-class AidlPowerHalWrapper : public PowerHalWrapper {
+class AidlHalWrapper : public HalWrapper {
 public:
-    explicit AidlPowerHalWrapper(sp<IPowerAidl> powerHal) : handle(std::move(powerHal)) {}
-    ~AidlPowerHalWrapper() = default;
+    explicit AidlHalWrapper(sp<hardware::power::IPower> handle) : mHandle(std::move(handle)) {}
+    virtual ~AidlHalWrapper() = default;
 
-    PowerHalResult setBoost(Boost boost, int32_t durationMs) override;
-    PowerHalResult setMode(Mode mode, bool enabled) override;
+    virtual HalResult setBoost(hardware::power::Boost boost, int32_t durationMs) override;
+    virtual HalResult setMode(hardware::power::Mode mode, bool enabled) override;
 
 private:
     // Control access to the boost and mode supported arrays.
     std::mutex mBoostMutex;
     std::mutex mModeMutex;
-    sp<IPowerAidl> handle;
+    sp<hardware::power::IPower> mHandle;
     // Android framework only sends boost upto DISPLAY_UPDATE_IMMINENT.
     // Need to increase the array size if more boost supported.
-    std::array<std::atomic<PowerHalSupport>, static_cast<int32_t>(Boost::DISPLAY_UPDATE_IMMINENT)+1>
-        boostSupportedArray GUARDED_BY(mBoostMutex) = {PowerHalSupport::UNKNOWN};
+    std::array<std::atomic<HalSupport>,
+               static_cast<int32_t>(hardware::power::Boost::DISPLAY_UPDATE_IMMINENT) + 1>
+            mBoostSupportedArray GUARDED_BY(mBoostMutex) = {HalSupport::UNKNOWN};
     // Android framework only sends mode upto DISPLAY_INACTIVE.
     // Need to increase the array if more mode supported.
-    std::array<std::atomic<PowerHalSupport>, static_cast<int32_t>(Mode::DISPLAY_INACTIVE)+1>
-        modeSupportedArray GUARDED_BY(mModeMutex) = {PowerHalSupport::UNKNOWN};
+    std::array<std::atomic<HalSupport>,
+               static_cast<int32_t>(hardware::power::Mode::DISPLAY_INACTIVE) + 1>
+            mModeSupportedArray GUARDED_BY(mModeMutex) = {HalSupport::UNKNOWN};
 };
 
+}; // namespace power
+
 }; // namespace android
 
 #endif // ANDROID_POWERHALWRAPPER_H