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/*
* Copyright (C) 2018 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.
*/
#include "Sensors.h"
#include <android/hardware/sensors/2.0/types.h>
#include <log/log.h>
namespace android {
namespace hardware {
namespace sensors {
namespace V2_0 {
namespace implementation {
using ::android::hardware::sensors::V1_0::Event;
using ::android::hardware::sensors::V1_0::OperationMode;
using ::android::hardware::sensors::V1_0::RateLevel;
using ::android::hardware::sensors::V1_0::Result;
using ::android::hardware::sensors::V1_0::SharedMemInfo;
Sensors::Sensors() : mEventQueueFlag(nullptr) {
std::shared_ptr<AccelSensor> accel =
std::make_shared<AccelSensor>(1 /* sensorHandle */, this /* callback */);
mSensors[accel->getSensorInfo().sensorHandle] = accel;
}
Sensors::~Sensors() {
deleteEventFlag();
}
// Methods from ::android::hardware::sensors::V2_0::ISensors follow.
Return<void> Sensors::getSensorsList(getSensorsList_cb _hidl_cb) {
std::vector<SensorInfo> sensors;
for (const auto& sensor : mSensors) {
sensors.push_back(sensor.second->getSensorInfo());
}
// Call the HIDL callback with the SensorInfo
_hidl_cb(sensors);
return Void();
}
Return<Result> Sensors::setOperationMode(OperationMode mode) {
for (auto sensor : mSensors) {
sensor.second->setOperationMode(mode);
}
return Result::OK;
}
Return<Result> Sensors::activate(int32_t sensorHandle, bool enabled) {
auto sensor = mSensors.find(sensorHandle);
if (sensor != mSensors.end()) {
sensor->second->activate(enabled);
return Result::OK;
}
return Result::BAD_VALUE;
}
Return<Result> Sensors::initialize(
const ::android::hardware::MQDescriptorSync<Event>& eventQueueDescriptor,
const ::android::hardware::MQDescriptorSync<uint32_t>& wakeLockDescriptor,
const sp<ISensorsCallback>& sensorsCallback) {
Result result = Result::OK;
// Save a reference to the callback
mCallback = sensorsCallback;
// Create the Event FMQ from the eventQueueDescriptor. Reset the read/write positions.
mEventQueue =
std::make_unique<EventMessageQueue>(eventQueueDescriptor, true /* resetPointers */);
// Ensure that any existing EventFlag is properly deleted
deleteEventFlag();
// Create the EventFlag that is used to signal to the framework that sensor events have been
// written to the Event FMQ
if (EventFlag::createEventFlag(mEventQueue->getEventFlagWord(), &mEventQueueFlag) != OK) {
result = Result::BAD_VALUE;
}
// Create the Wake Lock FMQ that is used by the framework to communicate whenever WAKE_UP
// events have been successfully read and handled by the framework.
mWakeLockQueue =
std::make_unique<WakeLockMessageQueue>(wakeLockDescriptor, true /* resetPointers */);
if (!mCallback || !mEventQueue || !mWakeLockQueue || mEventQueueFlag == nullptr) {
result = Result::BAD_VALUE;
}
return result;
}
Return<Result> Sensors::batch(int32_t sensorHandle, int64_t samplingPeriodNs,
int64_t /* maxReportLatencyNs */) {
auto sensor = mSensors.find(sensorHandle);
if (sensor != mSensors.end()) {
sensor->second->batch(samplingPeriodNs);
return Result::OK;
}
return Result::BAD_VALUE;
}
Return<Result> Sensors::flush(int32_t sensorHandle) {
auto sensor = mSensors.find(sensorHandle);
if (sensor != mSensors.end()) {
return sensor->second->flush();
}
return Result::BAD_VALUE;
}
Return<Result> Sensors::injectSensorData(const Event& event) {
auto sensor = mSensors.find(event.sensorHandle);
if (sensor != mSensors.end()) {
return sensor->second->injectEvent(event);
}
return Result::BAD_VALUE;
}
Return<void> Sensors::registerDirectChannel(const SharedMemInfo& /* mem */,
registerDirectChannel_cb _hidl_cb) {
_hidl_cb(Result::INVALID_OPERATION, 0 /* channelHandle */);
return Return<void>();
}
Return<Result> Sensors::unregisterDirectChannel(int32_t /* channelHandle */) {
return Result::INVALID_OPERATION;
}
Return<void> Sensors::configDirectReport(int32_t /* sensorHandle */, int32_t /* channelHandle */,
RateLevel /* rate */, configDirectReport_cb _hidl_cb) {
_hidl_cb(Result::INVALID_OPERATION, 0 /* reportToken */);
return Return<void>();
}
void Sensors::postEvents(const std::vector<Event>& events) {
std::lock_guard<std::mutex> l(mLock);
// TODO: read events from the Wake Lock FMQ in the right place
std::vector<uint32_t> tmp(mWakeLockQueue->availableToRead());
mWakeLockQueue->read(tmp.data(), mWakeLockQueue->availableToRead());
mEventQueue->write(events.data(), events.size());
mEventQueueFlag->wake(static_cast<uint32_t>(EventQueueFlagBits::READ_AND_PROCESS));
}
void Sensors::deleteEventFlag() {
status_t status = EventFlag::deleteEventFlag(&mEventQueueFlag);
if (status != OK) {
ALOGI("Failed to delete event flag: %d", status);
}
}
} // namespace implementation
} // namespace V2_0
} // namespace sensors
} // namespace hardware
} // namespace android
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