325 lines
12 KiB
C++
325 lines
12 KiB
C++
/*
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* Copyright (C) 2021 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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#include "AidlSensorHalWrapper.h"
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#include "ISensorsWrapper.h"
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#include "SensorDeviceUtils.h"
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#include "android/hardware/sensors/2.0/types.h"
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#include <aidl/android/hardware/sensors/BnSensorsCallback.h>
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#include <aidlcommonsupport/NativeHandle.h>
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#include <android-base/logging.h>
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#include <android/binder_manager.h>
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#include <aidl/sensors/convert.h>
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using ::aidl::android::hardware::sensors::AdditionalInfo;
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using ::aidl::android::hardware::sensors::DynamicSensorInfo;
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using ::aidl::android::hardware::sensors::Event;
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using ::aidl::android::hardware::sensors::ISensors;
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using ::aidl::android::hardware::sensors::SensorInfo;
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using ::aidl::android::hardware::sensors::SensorStatus;
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using ::aidl::android::hardware::sensors::SensorType;
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using ::android::AidlMessageQueue;
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using ::android::hardware::EventFlag;
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using ::android::hardware::sensors::V2_1::implementation::MAX_RECEIVE_BUFFER_EVENT_COUNT;
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using ::android::hardware::sensors::implementation::convertToStatus;
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using ::android::hardware::sensors::implementation::convertToSensor;
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using ::android::hardware::sensors::implementation::convertToSensorEvent;
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using ::android::hardware::sensors::implementation::convertFromSensorEvent;
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namespace android {
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namespace {
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void serviceDied(void *cookie) {
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ALOGW("Sensors HAL died, attempting to reconnect.");
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((AidlSensorHalWrapper *)cookie)->prepareForReconnect();
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}
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template <typename EnumType>
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constexpr typename std::underlying_type<EnumType>::type asBaseType(EnumType value) {
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return static_cast<typename std::underlying_type<EnumType>::type>(value);
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}
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enum EventQueueFlagBitsInternal : uint32_t {
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INTERNAL_WAKE = 1 << 16,
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};
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} // anonymous namespace
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class AidlSensorsCallback : public ::aidl::android::hardware::sensors::BnSensorsCallback {
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public:
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AidlSensorsCallback(AidlSensorHalWrapper::SensorDeviceCallback *sensorDeviceCallback)
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: mSensorDeviceCallback(sensorDeviceCallback) {}
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::ndk::ScopedAStatus onDynamicSensorsConnected(
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const std::vector<SensorInfo> &sensorInfos) override {
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std::vector<sensor_t> sensors;
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for (const SensorInfo &sensorInfo : sensorInfos) {
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sensor_t sensor;
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convertToSensor(sensorInfo, &sensor);
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sensors.push_back(sensor);
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}
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mSensorDeviceCallback->onDynamicSensorsConnected(sensors);
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return ::ndk::ScopedAStatus::ok();
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}
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::ndk::ScopedAStatus onDynamicSensorsDisconnected(
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const std::vector<int32_t> &sensorHandles) override {
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mSensorDeviceCallback->onDynamicSensorsDisconnected(sensorHandles);
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return ::ndk::ScopedAStatus::ok();
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}
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private:
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ISensorHalWrapper::SensorDeviceCallback *mSensorDeviceCallback;
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};
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AidlSensorHalWrapper::AidlSensorHalWrapper()
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: mEventQueueFlag(nullptr),
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mWakeLockQueueFlag(nullptr),
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mDeathRecipient(AIBinder_DeathRecipient_new(serviceDied)) {}
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bool AidlSensorHalWrapper::supportsPolling() {
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return false;
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}
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bool AidlSensorHalWrapper::supportsMessageQueues() {
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return true;
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}
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bool AidlSensorHalWrapper::connect(SensorDeviceCallback *callback) {
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mSensorDeviceCallback = callback;
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mSensors = nullptr;
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auto aidlServiceName = std::string() + ISensors::descriptor + "/default";
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if (AServiceManager_isDeclared(aidlServiceName.c_str())) {
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if (mSensors != nullptr) {
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AIBinder_unlinkToDeath(mSensors->asBinder().get(), mDeathRecipient.get(), this);
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}
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ndk::SpAIBinder binder(AServiceManager_waitForService(aidlServiceName.c_str()));
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if (binder.get() != nullptr) {
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mSensors = ISensors::fromBinder(binder);
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mEventQueue = std::make_unique<AidlMessageQueue<
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Event, SynchronizedReadWrite>>(MAX_RECEIVE_BUFFER_EVENT_COUNT,
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/*configureEventFlagWord=*/true);
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mWakeLockQueue = std::make_unique<AidlMessageQueue<
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int32_t, SynchronizedReadWrite>>(MAX_RECEIVE_BUFFER_EVENT_COUNT,
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/*configureEventFlagWord=*/true);
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if (mEventQueueFlag != nullptr) {
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EventFlag::deleteEventFlag(&mEventQueueFlag);
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}
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EventFlag::createEventFlag(mEventQueue->getEventFlagWord(), &mEventQueueFlag);
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if (mWakeLockQueueFlag != nullptr) {
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EventFlag::deleteEventFlag(&mWakeLockQueueFlag);
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}
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EventFlag::createEventFlag(mWakeLockQueue->getEventFlagWord(), &mWakeLockQueueFlag);
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CHECK(mEventQueue != nullptr && mEventQueueFlag != nullptr &&
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mWakeLockQueue != nullptr && mWakeLockQueueFlag != nullptr);
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mCallback = ndk::SharedRefBase::make<AidlSensorsCallback>(mSensorDeviceCallback);
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mSensors->initialize(mEventQueue->dupeDesc(), mWakeLockQueue->dupeDesc(), mCallback);
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AIBinder_linkToDeath(mSensors->asBinder().get(), mDeathRecipient.get(), this);
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} else {
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ALOGE("Could not connect to declared sensors AIDL HAL");
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}
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}
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return mSensors != nullptr;
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}
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void AidlSensorHalWrapper::prepareForReconnect() {
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mReconnecting = true;
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if (mEventQueueFlag != nullptr) {
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mEventQueueFlag->wake(asBaseType(INTERNAL_WAKE));
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}
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}
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ssize_t AidlSensorHalWrapper::poll(sensors_event_t * /* buffer */, size_t /* count */) {
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return 0;
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}
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ssize_t AidlSensorHalWrapper::pollFmq(sensors_event_t *buffer, size_t maxNumEventsToRead) {
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ssize_t eventsRead = 0;
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size_t availableEvents = mEventQueue->availableToRead();
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if (availableEvents == 0) {
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uint32_t eventFlagState = 0;
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// Wait for events to become available. This is necessary so that the Event FMQ's read() is
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// able to be called with the correct number of events to read. If the specified number of
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// events is not available, then read() would return no events, possibly introducing
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// additional latency in delivering events to applications.
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if (mEventQueueFlag != nullptr) {
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mEventQueueFlag->wait(asBaseType(ISensors::EVENT_QUEUE_FLAG_BITS_READ_AND_PROCESS) |
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asBaseType(INTERNAL_WAKE),
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&eventFlagState);
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}
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availableEvents = mEventQueue->availableToRead();
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if ((eventFlagState & asBaseType(INTERNAL_WAKE)) && mReconnecting) {
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ALOGD("Event FMQ internal wake, returning from poll with no events");
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return DEAD_OBJECT;
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}
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}
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size_t eventsToRead = std::min({availableEvents, maxNumEventsToRead, mEventBuffer.size()});
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if (eventsToRead > 0) {
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if (mEventQueue->read(mEventBuffer.data(), eventsToRead)) {
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// Notify the Sensors HAL that sensor events have been read. This is required to support
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// the use of writeBlocking by the Sensors HAL.
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if (mEventQueueFlag != nullptr) {
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mEventQueueFlag->wake(asBaseType(ISensors::EVENT_QUEUE_FLAG_BITS_EVENTS_READ));
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}
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for (size_t i = 0; i < eventsToRead; i++) {
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convertToSensorEvent(mEventBuffer[i], &buffer[i]);
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}
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eventsRead = eventsToRead;
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} else {
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ALOGW("Failed to read %zu events, currently %zu events available", eventsToRead,
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availableEvents);
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}
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}
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return eventsRead;
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}
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std::vector<sensor_t> AidlSensorHalWrapper::getSensorsList() {
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std::vector<sensor_t> sensorsFound;
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if (mSensors != nullptr) {
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std::vector<SensorInfo> list;
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mSensors->getSensorsList(&list);
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for (size_t i = 0; i < list.size(); i++) {
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sensor_t sensor;
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convertToSensor(list[i], &sensor);
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sensorsFound.push_back(sensor);
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}
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}
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return sensorsFound;
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}
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status_t AidlSensorHalWrapper::setOperationMode(SensorService::Mode mode) {
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if (mSensors == nullptr) return NO_INIT;
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return convertToStatus(mSensors->setOperationMode(static_cast<ISensors::OperationMode>(mode)));
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}
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status_t AidlSensorHalWrapper::activate(int32_t sensorHandle, bool enabled) {
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if (mSensors == nullptr) return NO_INIT;
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return convertToStatus(mSensors->activate(sensorHandle, enabled));
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}
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status_t AidlSensorHalWrapper::batch(int32_t sensorHandle, int64_t samplingPeriodNs,
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int64_t maxReportLatencyNs) {
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if (mSensors == nullptr) return NO_INIT;
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return convertToStatus(mSensors->batch(sensorHandle, samplingPeriodNs, maxReportLatencyNs));
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}
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status_t AidlSensorHalWrapper::flush(int32_t sensorHandle) {
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if (mSensors == nullptr) return NO_INIT;
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return convertToStatus(mSensors->flush(sensorHandle));
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}
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status_t AidlSensorHalWrapper::injectSensorData(const sensors_event_t *event) {
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if (mSensors == nullptr) return NO_INIT;
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Event ev;
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convertFromSensorEvent(*event, &ev);
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return convertToStatus(mSensors->injectSensorData(ev));
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}
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status_t AidlSensorHalWrapper::registerDirectChannel(const sensors_direct_mem_t *memory,
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int32_t *channelHandle) {
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if (mSensors == nullptr) return NO_INIT;
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ISensors::SharedMemInfo::SharedMemType type;
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switch (memory->type) {
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case SENSOR_DIRECT_MEM_TYPE_ASHMEM:
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type = ISensors::SharedMemInfo::SharedMemType::ASHMEM;
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break;
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case SENSOR_DIRECT_MEM_TYPE_GRALLOC:
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type = ISensors::SharedMemInfo::SharedMemType::GRALLOC;
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break;
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default:
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return BAD_VALUE;
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}
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if (memory->format != SENSOR_DIRECT_FMT_SENSORS_EVENT) {
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return BAD_VALUE;
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}
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ISensors::SharedMemInfo::SharedMemFormat format =
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ISensors::SharedMemInfo::SharedMemFormat::SENSORS_EVENT;
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ISensors::SharedMemInfo mem = {
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.type = type,
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.format = format,
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.size = static_cast<int32_t>(memory->size),
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.memoryHandle = dupToAidl(memory->handle),
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};
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return convertToStatus(mSensors->registerDirectChannel(mem, channelHandle));
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}
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status_t AidlSensorHalWrapper::unregisterDirectChannel(int32_t channelHandle) {
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if (mSensors == nullptr) return NO_INIT;
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return convertToStatus(mSensors->unregisterDirectChannel(channelHandle));
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}
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status_t AidlSensorHalWrapper::configureDirectChannel(int32_t sensorHandle, int32_t channelHandle,
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const struct sensors_direct_cfg_t *config) {
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if (mSensors == nullptr) return NO_INIT;
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ISensors::RateLevel rate;
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switch (config->rate_level) {
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case SENSOR_DIRECT_RATE_STOP:
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rate = ISensors::RateLevel::STOP;
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break;
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case SENSOR_DIRECT_RATE_NORMAL:
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rate = ISensors::RateLevel::NORMAL;
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break;
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case SENSOR_DIRECT_RATE_FAST:
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rate = ISensors::RateLevel::FAST;
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break;
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case SENSOR_DIRECT_RATE_VERY_FAST:
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rate = ISensors::RateLevel::VERY_FAST;
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break;
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default:
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return BAD_VALUE;
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}
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int32_t token;
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mSensors->configDirectReport(sensorHandle, channelHandle, rate, &token);
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return token;
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}
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void AidlSensorHalWrapper::writeWakeLockHandled(uint32_t count) {
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int signedCount = (int)count;
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if (mWakeLockQueue->write(&signedCount)) {
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mWakeLockQueueFlag->wake(asBaseType(ISensors::WAKE_LOCK_QUEUE_FLAG_BITS_DATA_WRITTEN));
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} else {
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ALOGW("Failed to write wake lock handled");
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}
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}
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} // namespace android
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