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/*
* Copyright (C) 2021 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_HIDL_SENSOR_HAL_WRAPPER_H
#define ANDROID_HIDL_SENSOR_HAL_WRAPPER_H
#include <sensor/SensorEventQueue.h>
#include <utils/Singleton.h>
#include "ISensorHalWrapper.h"
#include "ISensorsWrapper.h"
#include "SensorDeviceUtils.h"
namespace android {
using android::hardware::sensors::V1_0::Result;
using android::hardware::sensors::V2_1::Event;
using android::hardware::sensors::V2_1::SensorInfo;
class HidlTransportErrorLog {
public:
HidlTransportErrorLog() {
mTs = 0;
mCount = 0;
}
HidlTransportErrorLog(time_t ts, int count) {
mTs = ts;
mCount = count;
}
String8 toString() const {
String8 result;
struct tm* timeInfo = localtime(&mTs);
result.appendFormat("%02d:%02d:%02d :: %d", timeInfo->tm_hour, timeInfo->tm_min,
timeInfo->tm_sec, mCount);
return result;
}
private:
time_t mTs; // timestamp of the error
int mCount; // number of transport errors observed
};
class SensorsHalDeathReceiver : public android::hardware::hidl_death_recipient {
public:
SensorsHalDeathReceiver(ISensorHalWrapper* wrapper) : mHidlSensorHalWrapper(wrapper) {}
virtual void serviceDied(uint64_t cookie,
const wp<::android::hidl::base::V1_0::IBase>& service) override;
private:
ISensorHalWrapper* mHidlSensorHalWrapper;
};
class HidlSensorHalWrapper : public ISensorHalWrapper {
public:
HidlSensorHalWrapper()
: mHidlTransportErrors(20),
mTotalHidlTransportErrors(0),
mRestartWaiter(new SensorDeviceUtils::HidlServiceRegistrationWaiter()),
mEventQueueFlag(nullptr),
mWakeLockQueueFlag(nullptr) {}
~HidlSensorHalWrapper() override {
if (mEventQueueFlag != nullptr) {
hardware::EventFlag::deleteEventFlag(&mEventQueueFlag);
mEventQueueFlag = nullptr;
}
if (mWakeLockQueueFlag != nullptr) {
hardware::EventFlag::deleteEventFlag(&mWakeLockQueueFlag);
mWakeLockQueueFlag = nullptr;
}
}
virtual bool connect(SensorDeviceCallback* callback) override;
virtual void prepareForReconnect() override;
virtual bool supportsPolling() override;
virtual bool supportsMessageQueues() override;
virtual ssize_t poll(sensors_event_t* buffer, size_t count) override;
virtual ssize_t pollFmq(sensors_event_t* buffer, size_t count) override;
virtual std::vector<sensor_t> getSensorsList() override;
virtual status_t setOperationMode(SensorService::Mode mode) override;
virtual status_t activate(int32_t sensorHandle, bool enabled) override;
virtual status_t batch(int32_t sensorHandle, int64_t samplingPeriodNs,
int64_t maxReportLatencyNs) override;
virtual status_t flush(int32_t sensorHandle) override;
virtual status_t injectSensorData(const sensors_event_t* event) override;
virtual status_t registerDirectChannel(const sensors_direct_mem_t* memory,
int32_t* outChannelHandle) override;
virtual status_t unregisterDirectChannel(int32_t channelHandle) override;
virtual status_t configureDirectChannel(int32_t sensorHandle, int32_t channelHandle,
const struct sensors_direct_cfg_t* config) override;
virtual void writeWakeLockHandled(uint32_t count) override;
private:
sp<::android::hardware::sensors::V2_1::implementation::ISensorsWrapperBase> mSensors;
sp<::android::hardware::sensors::V2_1::ISensorsCallback> mCallback;
// Keep track of any hidl transport failures
SensorServiceUtil::RingBuffer<HidlTransportErrorLog> mHidlTransportErrors;
int mTotalHidlTransportErrors;
SensorDeviceCallback* mSensorDeviceCallback = nullptr;
// TODO(b/67425500): remove waiter after bug is resolved.
sp<SensorDeviceUtils::HidlServiceRegistrationWaiter> mRestartWaiter;
template <typename T>
void checkReturn(const hardware::Return<T>& ret) {
if (!ret.isOk()) {
handleHidlDeath(ret.description());
}
}
status_t checkReturnAndGetStatus(const hardware::Return<Result>& ret);
void handleHidlDeath(const std::string& detail);
void convertToSensorEvent(const Event& src, sensors_event_t* dst);
void convertToSensorEvents(const hardware::hidl_vec<Event>& src,
const hardware::hidl_vec<SensorInfo>& dynamicSensorsAdded,
sensors_event_t* dst);
bool connectHidlService();
HalConnectionStatus connectHidlServiceV1_0();
HalConnectionStatus connectHidlServiceV2_0();
HalConnectionStatus connectHidlServiceV2_1();
HalConnectionStatus initializeHidlServiceV2_X();
typedef hardware::MessageQueue<uint32_t, hardware::kSynchronizedReadWrite> WakeLockQueue;
std::unique_ptr<WakeLockQueue> mWakeLockQueue;
hardware::EventFlag* mEventQueueFlag;
hardware::EventFlag* mWakeLockQueueFlag;
std::array<Event, SensorEventQueue::MAX_RECEIVE_BUFFER_EVENT_COUNT> mEventBuffer;
sp<SensorsHalDeathReceiver> mSensorsHalDeathReceiver;
};
} // namespace android
#endif // ANDROID_HIDL_SENSOR_HAL_WRAPPER_H
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