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Mathias Agopianf001c922010-11-11 17:58:51 -08001/*
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
Mathias Agopianf001c922010-11-11 17:58:51 -080020#include <gui/Sensor.h>
Peng Xu755c4512016-04-07 23:15:14 -070021#include <utils/RefBase.h>
Mathias Agopianf001c922010-11-11 17:58:51 -080022
23// ---------------------------------------------------------------------------
24
25namespace android {
26// ---------------------------------------------------------------------------
Peng Xu755c4512016-04-07 23:15:14 -070027class SensorDevice;
28class SensorFusion;
Mathias Agopianf001c922010-11-11 17:58:51 -080029
Peng Xu755c4512016-04-07 23:15:14 -070030class SensorInterface : public VirtualLightRefBase {
Mathias Agopianf001c922010-11-11 17:58:51 -080031public:
Peng Xu755c4512016-04-07 23:15:14 -070032 virtual ~SensorInterface() {}
Mathias Agopianf001c922010-11-11 17:58:51 -080033
Peng Xu0cc8f802016-04-05 23:46:03 -070034 virtual bool process(sensors_event_t* outEvent, const sensors_event_t& event) = 0;
Mathias Agopianf001c922010-11-11 17:58:51 -080035
Mathias Agopianf001c922010-11-11 17:58:51 -080036 virtual status_t activate(void* ident, bool enabled) = 0;
37 virtual status_t setDelay(void* ident, int handle, int64_t ns) = 0;
Peng Xu755c4512016-04-07 23:15:14 -070038 virtual status_t batch(void* ident, int handle, int /*flags*/, int64_t samplingPeriodNs,
39 int64_t maxBatchReportLatencyNs) = 0;
40
41 virtual status_t flush(void* /*ident*/, int /*handle*/) = 0;
42
43 virtual const Sensor& getSensor() const = 0;
44 virtual bool isVirtual() const = 0;
45 virtual void autoDisable(void* /*ident*/, int /*handle*/) = 0;
46};
47
48class BaseSensor : public SensorInterface {
49public:
50 BaseSensor(const sensor_t& sensor);
Aravind Akella724d91d2013-06-27 12:04:23 -070051
52 // Not all sensors need to support batching.
Peng Xu755c4512016-04-07 23:15:14 -070053 virtual status_t batch(void* ident, int handle, int, int64_t samplingPeriodNs,
54 int64_t maxBatchReportLatencyNs) override {
Aravind Akella724d91d2013-06-27 12:04:23 -070055 if (maxBatchReportLatencyNs == 0) {
56 return setDelay(ident, handle, samplingPeriodNs);
57 }
58 return -EINVAL;
59 }
60
Peng Xu755c4512016-04-07 23:15:14 -070061 virtual status_t flush(void* /*ident*/, int /*handle*/) override {
Aravind Akella724d91d2013-06-27 12:04:23 -070062 return -EINVAL;
63 }
64
Peng Xu755c4512016-04-07 23:15:14 -070065 virtual const Sensor& getSensor() const override { return mSensor; }
66 virtual void autoDisable(void* /*ident*/, int /*handle*/) override { }
67protected:
68 SensorDevice& mSensorDevice;
69 Sensor mSensor;
Mathias Agopianf001c922010-11-11 17:58:51 -080070};
71
72// ---------------------------------------------------------------------------
73
Peng Xu755c4512016-04-07 23:15:14 -070074class HardwareSensor : public BaseSensor {
Mathias Agopianf001c922010-11-11 17:58:51 -080075public:
76 HardwareSensor(const sensor_t& sensor);
77
78 virtual ~HardwareSensor();
79
80 virtual bool process(sensors_event_t* outEvent,
81 const sensors_event_t& event);
82
Peng Xu0cc8f802016-04-05 23:46:03 -070083 virtual status_t activate(void* ident, bool enabled) override;
Aravind Akella724d91d2013-06-27 12:04:23 -070084 virtual status_t batch(void* ident, int handle, int flags, int64_t samplingPeriodNs,
Peng Xu0cc8f802016-04-05 23:46:03 -070085 int64_t maxBatchReportLatencyNs) override;
86 virtual status_t setDelay(void* ident, int handle, int64_t ns) override;
87 virtual status_t flush(void* ident, int handle) override;
Peng Xu0cc8f802016-04-05 23:46:03 -070088 virtual bool isVirtual() const override { return false; }
89 virtual void autoDisable(void *ident, int handle) override;
Mathias Agopianf001c922010-11-11 17:58:51 -080090};
91
Peng Xu755c4512016-04-07 23:15:14 -070092class VirtualSensor : public BaseSensor
93{
94public:
95 VirtualSensor();
96 virtual bool isVirtual() const override { return true; }
97protected:
98 SensorFusion& mSensorFusion;
99};
100
Mathias Agopianf001c922010-11-11 17:58:51 -0800101
102// ---------------------------------------------------------------------------
103}; // namespace android
104
105#endif // ANDROID_SENSOR_INTERFACE_H