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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_GUI_SENSOR_H
18 #define ANDROID_GUI_SENSOR_H
19 
20 #include <stdint.h>
21 #include <sys/types.h>
22 
23 #include <utils/Errors.h>
24 #include <utils/Flattenable.h>
25 #include <utils/String8.h>
26 #include <utils/Timers.h>
27 
28 #include <hardware/sensors.h>
29 
30 #include <android/sensor.h>
31 
32 // ----------------------------------------------------------------------------
33 // Concrete types for the NDK
34 struct ASensor { };
35 
36 // ----------------------------------------------------------------------------
37 namespace android {
38 // ----------------------------------------------------------------------------
39 
40 class Parcel;
41 
42 // ----------------------------------------------------------------------------
43 
44 class Sensor : public ASensor, public LightFlattenable<Sensor>
45 {
46 public:
47     enum {
48         TYPE_ACCELEROMETER  = ASENSOR_TYPE_ACCELEROMETER,
49         TYPE_MAGNETIC_FIELD = ASENSOR_TYPE_MAGNETIC_FIELD,
50         TYPE_GYROSCOPE      = ASENSOR_TYPE_GYROSCOPE,
51         TYPE_LIGHT          = ASENSOR_TYPE_LIGHT,
52         TYPE_PROXIMITY      = ASENSOR_TYPE_PROXIMITY
53     };
54 
55             Sensor();
56             Sensor(struct sensor_t const* hwSensor, int halVersion = 0);
57             ~Sensor();
58 
59     const String8& getName() const;
60     const String8& getVendor() const;
61     int32_t getHandle() const;
62     int32_t getType() const;
63     float getMinValue() const;
64     float getMaxValue() const;
65     float getResolution() const;
66     float getPowerUsage() const;
67     int32_t getMinDelay() const;
68     nsecs_t getMinDelayNs() const;
69     int32_t getVersion() const;
70     int32_t getFifoReservedEventCount() const;
71     int32_t getFifoMaxEventCount() const;
72     const String8& getStringType() const;
73     const String8& getRequiredPermission() const;
74     int32_t getMaxDelay() const;
75     int32_t getFlags() const;
76     bool isWakeUpSensor() const;
77     int32_t getReportingMode() const;
78 
79     // LightFlattenable protocol
isFixedSize()80     inline bool isFixedSize() const { return false; }
81     size_t getFlattenedSize() const;
82     status_t flatten(void* buffer, size_t size) const;
83     status_t unflatten(void const* buffer, size_t size);
84 
85 private:
86     String8 mName;
87     String8 mVendor;
88     int32_t mHandle;
89     int32_t mType;
90     float   mMinValue;
91     float   mMaxValue;
92     float   mResolution;
93     float   mPower;
94     int32_t mMinDelay;
95     int32_t mVersion;
96     int32_t mFifoReservedEventCount;
97     int32_t mFifoMaxEventCount;
98     String8 mStringType;
99     String8 mRequiredPermission;
100     int32_t mMaxDelay;
101     int32_t mFlags;
102     static void flattenString8(void*& buffer, size_t& size, const String8& string8);
103     static bool unflattenString8(void const*& buffer, size_t& size, String8& outputString8);
104 };
105 
106 // ----------------------------------------------------------------------------
107 }; // namespace android
108 
109 #endif // ANDROID_GUI_SENSOR_H
110