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      1 /*
      2  * Copyright (C) 2018 The Android Open Source Project
      3  *
      4  * Licensed under the Apache License, Version 2.0 (the "License");
      5  * you may not use this file except in compliance with the License.
      6  * You may obtain a copy of the License at
      7  *
      8  *      http://www.apache.org/licenses/LICENSE-2.0
      9  *
     10  * Unless required by applicable law or agreed to in writing, software
     11  * distributed under the License is distributed on an "AS IS" BASIS,
     12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
     13  * See the License for the specific language governing permissions and
     14  * limitations under the License.
     15  */
     16 
     17 #ifndef ANDROID_HARDWARE_SENSORS_V2_0_SENSOR_H
     18 #define ANDROID_HARDWARE_SENSORS_V2_0_SENSOR_H
     19 
     20 #include <android/hardware/sensors/1.0/types.h>
     21 
     22 #include <condition_variable>
     23 #include <memory>
     24 #include <mutex>
     25 #include <thread>
     26 #include <vector>
     27 
     28 using ::android::hardware::sensors::V1_0::Event;
     29 using ::android::hardware::sensors::V1_0::OperationMode;
     30 using ::android::hardware::sensors::V1_0::Result;
     31 using ::android::hardware::sensors::V1_0::SensorInfo;
     32 using ::android::hardware::sensors::V1_0::SensorType;
     33 
     34 namespace android {
     35 namespace hardware {
     36 namespace sensors {
     37 namespace V2_0 {
     38 namespace implementation {
     39 
     40 class ISensorsEventCallback {
     41    public:
     42     virtual ~ISensorsEventCallback(){};
     43     virtual void postEvents(const std::vector<Event>& events, bool wakeup) = 0;
     44 };
     45 
     46 class Sensor {
     47    public:
     48     Sensor(ISensorsEventCallback* callback);
     49     virtual ~Sensor();
     50 
     51     const SensorInfo& getSensorInfo() const;
     52     void batch(int32_t samplingPeriodNs);
     53     virtual void activate(bool enable);
     54     Result flush();
     55 
     56     void setOperationMode(OperationMode mode);
     57     bool supportsDataInjection() const;
     58     Result injectEvent(const Event& event);
     59 
     60    protected:
     61     void run();
     62     virtual std::vector<Event> readEvents();
     63     static void startThread(Sensor* sensor);
     64 
     65     bool isWakeUpSensor();
     66 
     67     bool mIsEnabled;
     68     int64_t mSamplingPeriodNs;
     69     int64_t mLastSampleTimeNs;
     70     SensorInfo mSensorInfo;
     71 
     72     std::atomic_bool mStopThread;
     73     std::condition_variable mWaitCV;
     74     std::mutex mRunMutex;
     75     std::thread mRunThread;
     76 
     77     ISensorsEventCallback* mCallback;
     78 
     79     OperationMode mMode;
     80 };
     81 
     82 class OnChangeSensor : public Sensor {
     83    public:
     84     OnChangeSensor(ISensorsEventCallback* callback);
     85 
     86     virtual void activate(bool enable) override;
     87 
     88    protected:
     89     virtual std::vector<Event> readEvents() override;
     90 
     91    protected:
     92     Event mPreviousEvent;
     93     bool mPreviousEventSet;
     94 };
     95 
     96 class AccelSensor : public Sensor {
     97    public:
     98     AccelSensor(int32_t sensorHandle, ISensorsEventCallback* callback);
     99 };
    100 
    101 class GyroSensor : public Sensor {
    102    public:
    103     GyroSensor(int32_t sensorHandle, ISensorsEventCallback* callback);
    104 };
    105 
    106 class AmbientTempSensor : public OnChangeSensor {
    107    public:
    108     AmbientTempSensor(int32_t sensorHandle, ISensorsEventCallback* callback);
    109 };
    110 
    111 class DeviceTempSensor : public OnChangeSensor {
    112    public:
    113     DeviceTempSensor(int32_t sensorHandle, ISensorsEventCallback* callback);
    114 };
    115 
    116 class PressureSensor : public Sensor {
    117    public:
    118     PressureSensor(int32_t sensorHandle, ISensorsEventCallback* callback);
    119 };
    120 
    121 class MagnetometerSensor : public Sensor {
    122    public:
    123     MagnetometerSensor(int32_t sensorHandle, ISensorsEventCallback* callback);
    124 };
    125 
    126 class LightSensor : public OnChangeSensor {
    127    public:
    128     LightSensor(int32_t sensorHandle, ISensorsEventCallback* callback);
    129 };
    130 
    131 class ProximitySensor : public OnChangeSensor {
    132    public:
    133     ProximitySensor(int32_t sensorHandle, ISensorsEventCallback* callback);
    134 };
    135 
    136 class RelativeHumiditySensor : public OnChangeSensor {
    137    public:
    138     RelativeHumiditySensor(int32_t sensorHandle, ISensorsEventCallback* callback);
    139 };
    140 
    141 }  // namespace implementation
    142 }  // namespace V2_0
    143 }  // namespace sensors
    144 }  // namespace hardware
    145 }  // namespace android
    146 
    147 #endif  // ANDROID_HARDWARE_SENSORS_V2_0_SENSOR_H
    148