Simplify libvibratorservice after HIDL support removal (1d71443d) · Commits · e / os / android_frameworks_native

services/vibratorservice/Android.bp

+3 −2

Original line number	Diff line number	Diff line
		@@ -26,6 +26,7 @@ cc_library_shared {

		srcs: [
		"VibratorCallbackScheduler.cpp",
		"VibratorController.cpp",
		"VibratorHalController.cpp",
		"VibratorHalWrapper.cpp",
		"VibratorManagerHalController.cpp",
		@@ -41,17 +42,17 @@ cc_library_shared {
		},

		shared_libs: [
		"android.hardware.vibrator-V3-ndk",
		"libbinder_ndk",
		"liblog",
		"libutils",
		"android.hardware.vibrator-V3-ndk",
		],

		cflags: [
		"-Wall",
		"-Werror",
		"-Wunused",
		"-Wunreachable-code",
		"-Wunused",
		],

		local_include_dirs: ["include"],

services/vibratorservice/VibratorController.cpp

0 → 100644

+196 −0

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		/*
		* Copyright (C) 2025 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.
		*/

		#define LOG_TAG "VibratorController"

		#ifndef qDoWithRetries
		#define qDoWithRetries(op) doWithRetries(op, __FUNCTION__)
		#endif

		#include <aidl/android/hardware/vibrator/IVibrator.h>
		#include <android/binder_manager.h>
		#include <binder/IServiceManager.h>

		#include <utils/Log.h>

		#include <vibratorservice/VibratorController.h>

		using ::aidl::android::hardware::vibrator::Effect;
		using ::aidl::android::hardware::vibrator::EffectStrength;
		using ::aidl::android::hardware::vibrator::IVibrator;

		using Status = ::ndk::ScopedAStatus;

		using namespace std::placeholders;

		namespace android {

		namespace vibrator {

		// -------------------------------------------------------------------------------------------------

		inline bool isStatusUnsupported(const Status& status) {
		// STATUS_UNKNOWN_TRANSACTION means the HAL is an older version, so operation is unsupported.
		return status.getStatus() == STATUS_UNKNOWN_TRANSACTION \|\|
		status.getExceptionCode() == EX_UNSUPPORTED_OPERATION;
		}

		inline bool isStatusTransactionFailed(const Status& status) {
		// STATUS_UNKNOWN_TRANSACTION means the HAL is an older version, so operation is unsupported.
		return status.getStatus() != STATUS_UNKNOWN_TRANSACTION &&
		status.getExceptionCode() == EX_TRANSACTION_FAILED;
		}

		// -------------------------------------------------------------------------------------------------

		bool VibratorProvider::isDeclared() {
		std::lock_guard<std::mutex> lock(mMutex);
		if (mIsDeclared.has_value()) {
		return *mIsDeclared;
		}

		bool isDeclared = AServiceManager_isDeclared(mServiceName.c_str());
		if (!isDeclared) {
		ALOGV("Vibrator HAL service not declared.");
		}

		mIsDeclared.emplace(isDeclared);
		return isDeclared;
		}

		std::shared_ptr<IVibrator> VibratorProvider::waitForVibrator() {
		if (!isDeclared()) {
		return nullptr;
		}

		auto vibrator = IVibrator::fromBinder(
		ndk::SpAIBinder(AServiceManager_waitForService(mServiceName.c_str())));
		if (vibrator) {
		ALOGV("Successfully connected to Vibrator HAL service.");
		} else {
		ALOGE("Error connecting to declared Vibrator HAL service.");
		}

		return vibrator;
		}

		std::shared_ptr<IVibrator> VibratorProvider::checkForVibrator() {
		if (!isDeclared()) {
		return nullptr;
		}

		auto vibrator = IVibrator::fromBinder(
		ndk::SpAIBinder(AServiceManager_checkService(mServiceName.c_str())));
		if (vibrator) {
		ALOGV("Successfully reconnected to Vibrator HAL service.");
		} else {
		ALOGE("Error reconnecting to declared Vibrator HAL service.");
		}

		return vibrator;
		}

		// -------------------------------------------------------------------------------------------------

		bool VibratorController::init() {
		if (!mVibratorProvider->isDeclared()) {
		return false;
		}
		std::lock_guard<std::mutex> lock(mMutex);
		if (mVibrator == nullptr) {
		mVibrator = mVibratorProvider->waitForVibrator();
		}
		return mVibratorProvider->isDeclared();
		}

		Status VibratorController::off() {
		return qDoWithRetries(std::bind(&IVibrator::off, _1));
		}

		Status VibratorController::setAmplitude(float amplitude) {
		return qDoWithRetries(std::bind(&IVibrator::setAmplitude, _1, amplitude));
		}

		Status VibratorController::setExternalControl(bool enabled) {
		return qDoWithRetries(std::bind(&IVibrator::setExternalControl, _1, enabled));
		}

		Status VibratorController::alwaysOnEnable(int32_t id, const Effect& effect,
		const EffectStrength& strength) {
		return qDoWithRetries(std::bind(&IVibrator::alwaysOnEnable, _1, id, effect, strength));
		}

		Status VibratorController::alwaysOnDisable(int32_t id) {
		return qDoWithRetries(std::bind(&IVibrator::alwaysOnDisable, _1, id));
		}

		// -------------------------------------------------------------------------------------------------

		std::shared_ptr<IVibrator> VibratorController::reconnectToVibrator() {
		std::lock_guard<std::mutex> lock(mMutex);
		mVibrator = mVibratorProvider->checkForVibrator();
		return mVibrator;
		}

		Status VibratorController::doWithRetries(const VibratorController::VibratorOp& op,
		const char* logLabel) {
		if (!init()) {
		ALOGV("Skipped %s because Vibrator HAL is not declared", logLabel);
		return Status::fromExceptionCodeWithMessage(EX_ILLEGAL_STATE, "IVibrator not declared");
		}
		std::shared_ptr<IVibrator> vibrator;
		{
		std::lock_guard<std::mutex> lock(mMutex);
		vibrator = mVibrator;
		}

		if (!vibrator) {
		ALOGE("Skipped %s because Vibrator HAL is declared but failed to load", logLabel);
		return Status::fromExceptionCodeWithMessage(EX_ILLEGAL_STATE,
		"IVibrator declared but failed to load");
		}

		auto status = doOnce(vibrator.get(), op, logLabel);
		for (int i = 1; i < MAX_ATTEMPTS && isStatusTransactionFailed(status); i++) {
		vibrator = reconnectToVibrator();
		if (!vibrator) {
		// Failed to reconnect to vibrator HAL after a transaction failed, skip retries.
		break;
		}
		status = doOnce(vibrator.get(), op, logLabel);
		}

		return status;
		}

		Status VibratorController::doOnce(IVibrator* vibrator, const VibratorController::VibratorOp& op,
		const char* logLabel) {
		auto status = op(vibrator);
		if (!status.isOk()) {
		if (isStatusUnsupported(status)) {
		ALOGV("Vibrator HAL %s is unsupported: %s", logLabel, status.getMessage());
		} else {
		ALOGE("Vibrator HAL %s failed: %s", logLabel, status.getMessage());
		}
		}
		return status;
		}

		// -------------------------------------------------------------------------------------------------

		}; // namespace vibrator

		}; // namespace android

services/vibratorservice/include/vibratorservice/VibratorController.h

0 → 100644

+118 −0

Original line number	Diff line number	Diff line
		/*
		* Copyright (C) 2025 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_OS_VIBRATOR_CONTROLLER_H
		#define ANDROID_OS_VIBRATOR_CONTROLLER_H

		#include <aidl/android/hardware/vibrator/IVibrator.h>

		#include <android-base/thread_annotations.h>

		namespace android {

		namespace vibrator {

		// -------------------------------------------------------------------------------------------------

		/* Provider for IVibrator HAL service instances. */
		class VibratorProvider {
		public:
		using IVibrator = ::aidl::android::hardware::vibrator::IVibrator;

		VibratorProvider() : mServiceName(std::string(IVibrator::descriptor) + "/default") {}
		virtual ~VibratorProvider() = default;

		/* Returns true if vibrator HAL service is declared in the device, false otherwise. */
		virtual bool isDeclared();

		/* Connects to vibrator HAL, possibly waiting for the declared service to become available. */
		virtual std::shared_ptr<IVibrator> waitForVibrator();

		/* Connects to vibrator HAL if declared and available, without waiting. */
		virtual std::shared_ptr<IVibrator> checkForVibrator();

		private:
		std::mutex mMutex;
		const std::string mServiceName;
		std::optional<bool> mIsDeclared GUARDED_BY(mMutex);
		};

		// -------------------------------------------------------------------------------------------------

		/* Controller for Vibrator HAL handle.
		* This relies on VibratorProvider to connect to the underlying Vibrator HAL service and reconnects
		* after each transaction failed call. This also ensures connecting to the service is thread-safe.
		*/
		class VibratorController {
		public:
		using Effect = ::aidl::android::hardware::vibrator::Effect;
		using EffectStrength = ::aidl::android::hardware::vibrator::EffectStrength;
		using IVibrator = ::aidl::android::hardware::vibrator::IVibrator;
		using Status = ::ndk::ScopedAStatus;
		using VibratorOp = std::function<Status(IVibrator*)>;

		VibratorController() : VibratorController(std::make_shared<VibratorProvider>()) {}
		VibratorController(std::shared_ptr<VibratorProvider> vibratorProvider)
		: mVibratorProvider(std::move(vibratorProvider)), mVibrator(nullptr) {}
		virtual ~VibratorController() = default;

		/* Connects HAL service, possibly waiting for the declared service to become available.
		* This will automatically be called at the first API usage if it was not manually called
		* beforehand. Call this manually during the setup phase to avoid slowing the first API call.
		* Returns true if HAL service is declared, false otherwise.
		*/
		bool init();

		/* Turn vibrator off. */
		Status off();

		/* Set vibration amplitude in [0,1]. */
		Status setAmplitude(float amplitude);

		/* Enable/disable external control. */
		Status setExternalControl(bool enabled);

		/* Enable always-on for given id, with given effect and strength. */
		Status alwaysOnEnable(int32_t id, const Effect& effect, const EffectStrength& strength);

		/* Disable always-on for given id. */
		Status alwaysOnDisable(int32_t id);

		private:
		/* Max number of attempts to perform an operation when it fails with transaction error. */
		static constexpr int MAX_ATTEMPTS = 2;

		std::mutex mMutex;
		std::shared_ptr<VibratorProvider> mVibratorProvider;
		std::shared_ptr<IVibrator> mVibrator GUARDED_BY(mMutex);

		/* Reconnects HAL service without waiting for the service to become available. */
		std::shared_ptr<IVibrator> reconnectToVibrator();

		/* Perform given operation on HAL with retries on transaction failures. */
		Status doWithRetries(const VibratorOp& op, const char* logLabel);

		/* Perform given operation on HAL with logs for error/unsupported results. */
		static Status doOnce(IVibrator* vibrator, const VibratorOp& op, const char* logLabel);
		};

		// -------------------------------------------------------------------------------------------------

		}; // namespace vibrator

		}; // namespace android

		#endif // ANDROID_OS_VIBRATOR_CONTROLLER_H

services/vibratorservice/include/vibratorservice/VibratorHalController.h

+2 −0

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		@@ -14,6 +14,8 @@
		* limitations under the License.
		*/

		// TODO(b/308452413): remove this file once android.os.vibrator.remove_hidl_support is removed

		#ifndef ANDROID_OS_VIBRATORHALCONTROLLER_H
		#define ANDROID_OS_VIBRATORHALCONTROLLER_H

services/vibratorservice/include/vibratorservice/VibratorHalWrapper.h

+2 −0

Original line number	Diff line number	Diff line
		@@ -14,6 +14,8 @@
		* limitations under the License.
		*/

		// TODO(b/308452413): remove this file once android.os.vibrator.remove_hidl_support is removed

		#ifndef ANDROID_OS_VIBRATORHALWRAPPER_H
		#define ANDROID_OS_VIBRATORHALWRAPPER_H