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/*
* Copyright (C) 2019 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.
*/
#pragma once
#include <future>
#include <aidl/android/hardware/vibrator/BnVibratorCallback.h>
#include <aidl/android/hardware/vibrator/IVibrator.h>
#include <aidl/android/hardware/vibrator/IVibratorManager.h>
#include <android/binder_manager.h>
#include <android/binder_process.h>
#include <android/hardware/vibrator/1.3/IVibrator.h>
#include "IdlCli.h"
#include "utils.h"
namespace android {
using hardware::Return;
using idlcli::IdlCli;
static constexpr int NUM_TRIES = 2;
// Creates a Return<R> with STATUS::EX_NULL_POINTER.
template <class R>
inline R NullptrStatus() {
using ::android::hardware::Status;
return Status::fromExceptionCode(Status::EX_NULL_POINTER);
}
template <>
inline ndk::ScopedAStatus NullptrStatus() {
return ndk::ScopedAStatus(AStatus_fromExceptionCode(EX_NULL_POINTER));
}
template <typename I>
inline auto getService(std::string name) {
const auto instance = std::string() + I::descriptor + "/" + name;
auto vibBinder = ndk::SpAIBinder(AServiceManager_getService(instance.c_str()));
return I::fromBinder(vibBinder);
}
template <>
inline auto getService<android::hardware::vibrator::V1_0::IVibrator>(std::string name) {
return android::hardware::vibrator::V1_0::IVibrator::getService(name);
}
template <>
inline auto getService<android::hardware::vibrator::V1_1::IVibrator>(std::string name) {
return android::hardware::vibrator::V1_1::IVibrator::getService(name);
}
template <>
inline auto getService<android::hardware::vibrator::V1_2::IVibrator>(std::string name) {
return android::hardware::vibrator::V1_2::IVibrator::getService(name);
}
template <>
inline auto getService<android::hardware::vibrator::V1_3::IVibrator>(std::string name) {
return android::hardware::vibrator::V1_3::IVibrator::getService(name);
}
template <typename I>
using shared_ptr = std::invoke_result_t<decltype(getService<I>)&, std::string>;
template <typename I>
class HalWrapper {
public:
static std::unique_ptr<HalWrapper> Create() {
// Assume that if getService returns a nullptr, HAL is not available on the
// device.
const auto name = IdlCli::Get().getName();
auto hal = getService<I>(name.empty() ? "default" : name);
return hal ? std::unique_ptr<HalWrapper>(new HalWrapper(std::move(hal))) : nullptr;
}
template <class R, class... Args0, class... Args1>
R call(R (I::*fn)(Args0...), Args1&&... args1) {
return (*mHal.*fn)(std::forward<Args1>(args1)...);
}
private:
HalWrapper(shared_ptr<I>&& hal) : mHal(std::move(hal)) {}
private:
shared_ptr<I> mHal;
};
template <typename I>
static auto getHal() {
static auto sHalWrapper = HalWrapper<I>::Create();
return sHalWrapper.get();
}
template <class R, class I, class... Args0, class... Args1>
R halCall(R (I::*fn)(Args0...), Args1&&... args1) {
auto hal = getHal<I>();
return hal ? hal->call(fn, std::forward<Args1>(args1)...) : NullptrStatus<R>();
}
namespace idlcli {
namespace vibrator {
namespace V1_0 = ::android::hardware::vibrator::V1_0;
namespace V1_1 = ::android::hardware::vibrator::V1_1;
namespace V1_2 = ::android::hardware::vibrator::V1_2;
namespace V1_3 = ::android::hardware::vibrator::V1_3;
namespace aidl = ::aidl::android::hardware::vibrator;
class VibratorCallback : public aidl::BnVibratorCallback {
public:
ndk::ScopedAStatus onComplete() override {
mPromise.set_value();
return ndk::ScopedAStatus::ok();
}
void waitForComplete() { mPromise.get_future().wait(); }
private:
std::promise<void> mPromise;
};
} // namespace vibrator
} // namespace idlcli
} // namespace android
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