105 lines
3.3 KiB
C++
105 lines
3.3 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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#ifndef ANDROID_ISENSOR_HAL_WRAPPER_H
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#define ANDROID_ISENSOR_HAL_WRAPPER_H
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#include <hardware/sensors.h>
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#include <stdint.h>
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#include <sys/types.h>
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#include "SensorService.h"
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namespace android {
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/**
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* A wrapper for various types of HAL implementation, e.g. to distinguish HIDL and AIDL versions.
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*/
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class ISensorHalWrapper {
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public:
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class SensorDeviceCallback {
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public:
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virtual void onDynamicSensorsConnected(
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const std::vector<sensor_t> &dynamicSensorsAdded) = 0;
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virtual void onDynamicSensorsDisconnected(
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const std::vector<int32_t> &dynamicSensorHandlesRemoved) = 0;
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virtual ~SensorDeviceCallback(){};
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};
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enum HalConnectionStatus {
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CONNECTED, // Successfully connected to the HAL
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DOES_NOT_EXIST, // Could not find the HAL
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FAILED_TO_CONNECT, // Found the HAL but failed to connect/initialize
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UNKNOWN,
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};
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virtual ~ISensorHalWrapper(){};
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/**
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* Connects to the underlying sensors HAL. This should also be used for any reconnections
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* due to HAL resets.
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*/
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virtual bool connect(SensorDeviceCallback *callback) = 0;
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virtual void prepareForReconnect() = 0;
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virtual bool supportsPolling() = 0;
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virtual bool supportsMessageQueues() = 0;
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/**
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* Polls for available sensor events. This could be using the traditional sensors
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* polling or from a FMQ.
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*/
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virtual ssize_t poll(sensors_event_t *buffer, size_t count) = 0;
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virtual ssize_t pollFmq(sensors_event_t *buffer, size_t maxNumEventsToRead) = 0;
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/**
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* The below functions directly mirrors the sensors HAL definitions.
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*/
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virtual std::vector<sensor_t> getSensorsList() = 0;
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virtual status_t setOperationMode(SensorService::Mode mode) = 0;
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virtual status_t activate(int32_t sensorHandle, bool enabled) = 0;
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virtual status_t batch(int32_t sensorHandle, int64_t samplingPeriodNs,
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int64_t maxReportLatencyNs) = 0;
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virtual status_t flush(int32_t sensorHandle) = 0;
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virtual status_t injectSensorData(const sensors_event_t *event) = 0;
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virtual status_t registerDirectChannel(const sensors_direct_mem_t *memory,
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int32_t *channelHandle) = 0;
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virtual status_t unregisterDirectChannel(int32_t channelHandle) = 0;
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virtual status_t configureDirectChannel(int32_t sensorHandle, int32_t channelHandle,
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const struct sensors_direct_cfg_t *config) = 0;
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virtual void writeWakeLockHandled(uint32_t count) = 0;
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std::atomic_bool mReconnecting = false;
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};
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} // namespace android
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#endif // ANDROID_ISENSOR_HAL_WRAPPER_H
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