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/*
* Copyright (C) 2020 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 <android-base/unique_fd.h>
#include <V2_1/SubHal.h>
#include <cstdint>
#include <thread>
namespace goldfish {
namespace ahs = ::android::hardware::sensors;
namespace ahs21 = ahs::V2_1;
namespace ahs10 = ahs::V1_0;
using ahs21::implementation::IHalProxyCallback;
using ahs21::Event;
using ahs10::OperationMode;
using ahs10::RateLevel;
using ahs10::Result;
using ahs10::SharedMemInfo;
using ::android::base::unique_fd;
using ::android::hardware::hidl_handle;
using ::android::hardware::hidl_string;
using ::android::hardware::hidl_vec;
using ::android::hardware::Return;
using ::android::sp;
struct MultihalSensors : public ahs21::implementation::ISensorsSubHal {
MultihalSensors();
~MultihalSensors();
Return<void> debug(const hidl_handle& fd, const hidl_vec<hidl_string>& args) override;
Return<void> getSensorsList_2_1(getSensorsList_2_1_cb _hidl_cb) override;
Return<Result> setOperationMode(OperationMode mode) override;
Return<Result> activate(int32_t sensorHandle, bool enabled) override;
Return<Result> batch(int32_t sensorHandle,
int64_t samplingPeriodNs,
int64_t maxReportLatencyNs) override;
Return<Result> flush(int32_t sensorHandle) override;
Return<Result> injectSensorData_2_1(const Event& event) override;
Return<void> registerDirectChannel(const SharedMemInfo& mem,
registerDirectChannel_cb _hidl_cb) override;
Return<Result> unregisterDirectChannel(int32_t channelHandle) override;
Return<void> configDirectReport(int32_t sensorHandle,
int32_t channelHandle,
RateLevel rate,
configDirectReport_cb _hidl_cb) override;
const std::string getName() override;
Return<Result> initialize(const sp<IHalProxyCallback>& halProxyCallback) override;
private:
struct QemuSensorsProtocolState {
int64_t timeBiasNs = -500000000;
static constexpr float kSensorNoValue = -1e+30;
// on change sensors (host does not support them)
float lastAmbientTemperatureValue = kSensorNoValue;
float lastProximityValue = kSensorNoValue;
float lastLightValue = kSensorNoValue;
float lastRelativeHumidityValue = kSensorNoValue;
float lastHingeAngle0Value = kSensorNoValue;
float lastHingeAngle1Value = kSensorNoValue;
float lastHingeAngle2Value = kSensorNoValue;
};
static bool activateQemuSensorImpl(int pipe, int sensorHandle, bool enabled);
bool disableAllSensors();
void parseQemuSensorEvent(const int pipe, QemuSensorsProtocolState* state);
void postSensorEvent(const Event& event);
void postSensorEventLocked(const Event& event);
void qemuSensorListenerThread();
static void qemuSensorListenerThreadStart(MultihalSensors* that);
static constexpr char kCMD_QUIT = 'q';
bool qemuSensorThreadSendCommand(char cmd) const;
// set in ctor, never change
const unique_fd m_qemuSensorsFd;
uint32_t m_availableSensorsMask = 0;
// a pair of connected sockets to talk to the worker thread
unique_fd m_callersFd; // a caller writes here
unique_fd m_sensorThreadFd; // the worker thread listens from here
std::thread m_sensorThread;
// changed by API
uint32_t m_activeSensorsMask = 0;
OperationMode m_opMode = OperationMode::NORMAL;
sp<IHalProxyCallback> m_halProxyCallback;
mutable std::mutex m_apiMtx;
};
} // namespace goldfish
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