1 /* 2 * Copyright (C) 2010 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_SENSOR_INTERFACE_H 18 #define ANDROID_SENSOR_INTERFACE_H 19 20 #include <sensor/Sensor.h> 21 #include <utils/RefBase.h> 22 23 // --------------------------------------------------------------------------- 24 25 namespace android { 26 // --------------------------------------------------------------------------- 27 class SensorDevice; 28 class SensorFusion; 29 class SensorService; 30 31 class SensorInterface : public VirtualLightRefBase { 32 public: ~SensorInterface()33 virtual ~SensorInterface() {} 34 35 virtual bool process(sensors_event_t* outEvent, const sensors_event_t& event) = 0; 36 37 virtual status_t activate(void* ident, bool enabled) = 0; 38 virtual status_t setDelay(void* ident, int handle, int64_t ns) = 0; 39 virtual status_t batch(void* ident, int handle, int /*flags*/, int64_t samplingPeriodNs, 40 int64_t maxBatchReportLatencyNs) = 0; 41 42 virtual status_t flush(void* /*ident*/, int /*handle*/) = 0; 43 44 virtual const Sensor& getSensor() const = 0; 45 virtual bool isVirtual() const = 0; 46 virtual void autoDisable(void* /*ident*/, int /*handle*/) = 0; 47 }; 48 49 class BaseSensor : public SensorInterface { 50 public: 51 explicit BaseSensor(const sensor_t& sensor); 52 BaseSensor(const sensor_t& sensor, const uint8_t (&uuid)[16]); 53 54 // Not all sensors need to support batching. batch(void * ident,int handle,int,int64_t samplingPeriodNs,int64_t maxBatchReportLatencyNs)55 virtual status_t batch(void* ident, int handle, int, int64_t samplingPeriodNs, 56 int64_t maxBatchReportLatencyNs) override { 57 if (maxBatchReportLatencyNs == 0) { 58 return setDelay(ident, handle, samplingPeriodNs); 59 } 60 return -EINVAL; 61 } 62 flush(void *,int)63 virtual status_t flush(void* /*ident*/, int /*handle*/) override { 64 return -EINVAL; 65 } 66 getSensor()67 virtual const Sensor& getSensor() const override { return mSensor; } autoDisable(void *,int)68 virtual void autoDisable(void* /*ident*/, int /*handle*/) override { } 69 70 protected: 71 SensorDevice& mSensorDevice; 72 Sensor mSensor; 73 }; 74 75 // --------------------------------------------------------------------------- 76 77 class HardwareSensor : public BaseSensor { 78 public: 79 explicit HardwareSensor(const sensor_t& sensor); 80 HardwareSensor(const sensor_t& sensor, const uint8_t (&uuid)[16]); 81 82 virtual ~HardwareSensor(); 83 84 virtual bool process(sensors_event_t* outEvent, 85 const sensors_event_t& event); 86 87 virtual status_t activate(void* ident, bool enabled) override; 88 virtual status_t batch(void* ident, int handle, int flags, int64_t samplingPeriodNs, 89 int64_t maxBatchReportLatencyNs) override; 90 virtual status_t setDelay(void* ident, int handle, int64_t ns) override; 91 virtual status_t flush(void* ident, int handle) override; isVirtual()92 virtual bool isVirtual() const override { return false; } 93 virtual void autoDisable(void *ident, int handle) override; 94 }; 95 96 class VirtualSensor : public BaseSensor 97 { 98 public: 99 VirtualSensor(); isVirtual()100 virtual bool isVirtual() const override { return true; } 101 protected: 102 SensorFusion& mSensorFusion; 103 }; 104 105 // --------------------------------------------------------------------------- 106 107 class ProximitySensor : public HardwareSensor { 108 public: 109 explicit ProximitySensor(const sensor_t& sensor, SensorService& service); 110 111 status_t activate(void* ident, bool enabled) override; 112 113 private: 114 SensorService& mSensorService; 115 }; 116 117 // --------------------------------------------------------------------------- 118 }; // namespace android 119 120 #endif // ANDROID_SENSOR_INTERFACE_H 121