1 /*
2  * Copyright (C) 2017 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 A_SENSOR_MANAGER_H_
18 
19 #define A_SENSOR_MANAGER_H_
20 
21 #include <android-base/macros.h>
22 #include <android/frameworks/sensorservice/1.0/ISensorManager.h>
23 #include <android/sensor.h>
24 #include <utils/Mutex.h>
25 #include <utils/RefBase.h>
26 
27 struct ALooper;
28 
29 struct ASensorManager {
30     static ASensorManager *getInstance();
31 
32     ASensorManager();
33     android::status_t initCheck() const;
34 
35     // Returns error or number of sensors returned.
36     int getSensorList(ASensorList *list);
37 
38     ASensorRef getDefaultSensor(int type);
39     ASensorRef getDefaultSensorEx(int type, bool wakeup);
40 
41     ASensorEventQueue *createEventQueue(
42             ALooper *looper,
43             int ident,
44             ALooper_callbackFunc callback,
45             void *data);
46 
47     void destroyEventQueue(ASensorEventQueue *queue);
48 
49 private:
50 
51     struct SensorDeathRecipient : public android::hardware::hidl_death_recipient
52     {
53         // hidl_death_recipient interface
54         virtual void serviceDied(uint64_t cookie,
55                 const ::android::wp<::android::hidl::base::V1_0::IBase>& who) override;
56     };
57 
58     using ISensorManager = android::frameworks::sensorservice::V1_0::ISensorManager;
59     using SensorInfo = android::hardware::sensors::V1_0::SensorInfo;
60 
61     static ASensorManager *sInstance;
62     android::sp<SensorDeathRecipient> mDeathRecipient = nullptr;
63 
64     android::status_t mInitCheck;
65     android::sp<ISensorManager> mManager;
66 
67     mutable android::Mutex mLock;
68     android::hardware::hidl_vec<SensorInfo> mSensors;
69     std::unique_ptr<ASensorRef[]> mSensorList;
70 
71     DISALLOW_COPY_AND_ASSIGN(ASensorManager);
72 };
73 
74 #endif  // A_SENSOR_MANAGER_H_
75