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139 lines
4.2 KiB
139 lines
4.2 KiB
/*
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* Copyright (C) 2019 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#pragma once
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#include <future>
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#include <aidl/android/hardware/vibrator/BnVibratorCallback.h>
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#include <aidl/android/hardware/vibrator/IVibrator.h>
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#include <aidl/android/hardware/vibrator/IVibratorManager.h>
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#include <android/binder_manager.h>
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#include <android/binder_process.h>
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#include <android/hardware/vibrator/1.3/IVibrator.h>
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#include "IdlCli.h"
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#include "utils.h"
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namespace android {
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using hardware::Return;
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using idlcli::IdlCli;
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static constexpr int NUM_TRIES = 2;
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// Creates a Return<R> with STATUS::EX_NULL_POINTER.
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template <class R>
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inline R NullptrStatus() {
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using ::android::hardware::Status;
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return Status::fromExceptionCode(Status::EX_NULL_POINTER);
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}
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template <>
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inline ndk::ScopedAStatus NullptrStatus() {
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return ndk::ScopedAStatus(AStatus_fromExceptionCode(EX_NULL_POINTER));
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}
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template <typename I>
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inline auto getService(std::string name) {
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const auto instance = std::string() + I::descriptor + "/" + name;
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auto vibBinder = ndk::SpAIBinder(AServiceManager_getService(instance.c_str()));
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return I::fromBinder(vibBinder);
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}
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template <>
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inline auto getService<android::hardware::vibrator::V1_0::IVibrator>(std::string name) {
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return android::hardware::vibrator::V1_0::IVibrator::getService(name);
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}
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template <>
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inline auto getService<android::hardware::vibrator::V1_1::IVibrator>(std::string name) {
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return android::hardware::vibrator::V1_1::IVibrator::getService(name);
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}
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template <>
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inline auto getService<android::hardware::vibrator::V1_2::IVibrator>(std::string name) {
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return android::hardware::vibrator::V1_2::IVibrator::getService(name);
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}
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template <>
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inline auto getService<android::hardware::vibrator::V1_3::IVibrator>(std::string name) {
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return android::hardware::vibrator::V1_3::IVibrator::getService(name);
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}
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template <typename I>
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using shared_ptr = std::result_of_t<decltype(getService<I>)&(std::string)>;
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template <typename I>
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class HalWrapper {
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public:
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static std::unique_ptr<HalWrapper> Create() {
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// Assume that if getService returns a nullptr, HAL is not available on the
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// device.
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const auto name = IdlCli::Get().getName();
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auto hal = getService<I>(name.empty() ? "default" : name);
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return hal ? std::unique_ptr<HalWrapper>(new HalWrapper(std::move(hal))) : nullptr;
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}
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template <class R, class... Args0, class... Args1>
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R call(R (I::*fn)(Args0...), Args1&&... args1) {
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return (*mHal.*fn)(std::forward<Args1>(args1)...);
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}
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private:
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HalWrapper(shared_ptr<I>&& hal) : mHal(std::move(hal)) {}
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private:
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shared_ptr<I> mHal;
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};
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template <typename I>
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static auto getHal() {
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static auto sHalWrapper = HalWrapper<I>::Create();
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return sHalWrapper.get();
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}
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template <class R, class I, class... Args0, class... Args1>
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R halCall(R (I::*fn)(Args0...), Args1&&... args1) {
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auto hal = getHal<I>();
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return hal ? hal->call(fn, std::forward<Args1>(args1)...) : NullptrStatus<R>();
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}
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namespace idlcli {
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namespace vibrator {
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namespace V1_0 = ::android::hardware::vibrator::V1_0;
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namespace V1_1 = ::android::hardware::vibrator::V1_1;
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namespace V1_2 = ::android::hardware::vibrator::V1_2;
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namespace V1_3 = ::android::hardware::vibrator::V1_3;
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namespace aidl = ::aidl::android::hardware::vibrator;
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class VibratorCallback : public aidl::BnVibratorCallback {
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public:
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ndk::ScopedAStatus onComplete() override {
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mPromise.set_value();
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return ndk::ScopedAStatus::ok();
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}
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void waitForComplete() { mPromise.get_future().wait(); }
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private:
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std::promise<void> mPromise;
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};
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} // namespace vibrator
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} // namespace idlcli
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} // namespace android
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