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Mathias Agopianfc328812010-07-14 23:41:37 -07001/*
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_SERVICE_H
18#define ANDROID_SENSOR_SERVICE_H
19
20#include <stdint.h>
21#include <sys/types.h>
22
23#include <utils/Vector.h>
24#include <utils/SortedVector.h>
25#include <utils/KeyedVector.h>
26#include <utils/threads.h>
27#include <utils/RefBase.h>
28
29#include <binder/BinderService.h>
30#include <binder/Permission.h>
31
32#include <gui/Sensor.h>
33#include <gui/SensorChannel.h>
34#include <gui/ISensorServer.h>
35#include <gui/ISensorEventConnection.h>
36
37// ---------------------------------------------------------------------------
38
39struct sensors_poll_device_t;
40struct sensors_module_t;
41
42namespace android {
43// ---------------------------------------------------------------------------
44
45class SensorService :
46 public BinderService<SensorService>,
47 public BnSensorServer,
48 protected Thread
49{
50 friend class BinderService<SensorService>;
51
Mathias Agopian7c1c5312010-07-21 15:59:50 -070052 static const nsecs_t MINIMUM_EVENTS_PERIOD = 10000000; // 10ms
53 static const nsecs_t DEFAULT_EVENTS_PERIOD = 200000000; // 200 ms
54
Mathias Agopianfc328812010-07-14 23:41:37 -070055 SensorService();
56 virtual ~SensorService();
57
58 virtual void onFirstRef();
59
60 // Thread interface
61 virtual bool threadLoop();
62
63 // ISensorServer interface
64 virtual Vector<Sensor> getSensorList();
65 virtual sp<ISensorEventConnection> createSensorEventConnection();
66 virtual status_t dump(int fd, const Vector<String16>& args);
67
68
69 class SensorEventConnection : public BnSensorEventConnection {
Mathias Agopian7c1c5312010-07-21 15:59:50 -070070 virtual ~SensorEventConnection();
71 virtual void onFirstRef();
Mathias Agopianfc328812010-07-14 23:41:37 -070072 virtual sp<SensorChannel> getSensorChannel() const;
73 virtual status_t enableDisable(int handle, bool enabled);
74 virtual status_t setEventRate(int handle, nsecs_t ns);
Mathias Agopian7c1c5312010-07-21 15:59:50 -070075
Mathias Agopianfc328812010-07-14 23:41:37 -070076 sp<SensorService> const mService;
77 sp<SensorChannel> const mChannel;
Mathias Agopian7c1c5312010-07-21 15:59:50 -070078
79 // protected by SensorService::mLock
80 //SortedVector<int32_t> mSensorList;
81
82 struct SensorInfo {
83 SensorInfo() : ns(DEFAULT_EVENTS_PERIOD) { }
84 nsecs_t ns;
85 };
86 DefaultKeyedVector<int32_t, SensorInfo> mSensorInfo;
87
Mathias Agopianfc328812010-07-14 23:41:37 -070088 public:
89 SensorEventConnection(const sp<SensorService>& service);
Mathias Agopian7c1c5312010-07-21 15:59:50 -070090
Mathias Agopianfc328812010-07-14 23:41:37 -070091 status_t sendEvents(sensors_event_t const* buffer, size_t count);
92 bool hasSensor(int32_t handle) const;
93 bool hasAnySensor() const;
Mathias Agopian7c1c5312010-07-21 15:59:50 -070094 bool addSensor(int32_t handle);
95 bool removeSensor(int32_t handle);
96 status_t setEventRateLocked(int handle, nsecs_t ns);
97 nsecs_t getEventRateForSensor(int32_t handle) const {
98 return mSensorInfo.valueFor(handle).ns;
99 }
Mathias Agopianfc328812010-07-14 23:41:37 -0700100 };
101
102 class SensorRecord {
103 SortedVector< wp<SensorEventConnection> > mConnections;
104 public:
105 SensorRecord(const sp<SensorEventConnection>& connection);
Mathias Agopian7c1c5312010-07-21 15:59:50 -0700106 bool addConnection(const sp<SensorEventConnection>& connection);
Mathias Agopianfc328812010-07-14 23:41:37 -0700107 bool removeConnection(const wp<SensorEventConnection>& connection);
108 size_t getNumConnections() const { return mConnections.size(); }
109 };
110
111 SortedVector< wp<SensorEventConnection> > getActiveConnections() const;
Mathias Agopian5d270722010-07-19 15:20:39 -0700112 String8 getSensorName(int handle) const;
Mathias Agopian7c1c5312010-07-21 15:59:50 -0700113 status_t recomputeEventsPeriodLocked(int32_t handle);
Mathias Agopianfc328812010-07-14 23:41:37 -0700114
115 // constants
116 Vector<Sensor> mSensorList;
117 struct sensors_poll_device_t* mSensorDevice;
118 struct sensors_module_t* mSensorModule;
119 Permission mDump;
Mathias Agopian50df2952010-07-19 19:09:10 -0700120 status_t mInitCheck;
Mathias Agopianfc328812010-07-14 23:41:37 -0700121
122 // protected by mLock
123 mutable Mutex mLock;
Mathias Agopianfc328812010-07-14 23:41:37 -0700124 DefaultKeyedVector<int, SensorRecord*> mActiveSensors;
125 SortedVector< wp<SensorEventConnection> > mActiveConnections;
126
127public:
128 static char const* getServiceName() { return "sensorservice"; }
129
130 void cleanupConnection(const wp<SensorEventConnection>& connection);
131 status_t enable(const sp<SensorEventConnection>& connection, int handle);
132 status_t disable(const sp<SensorEventConnection>& connection, int handle);
Mathias Agopian7c1c5312010-07-21 15:59:50 -0700133 status_t setEventRate(const sp<SensorEventConnection>& connection, int handle, nsecs_t ns);
Mathias Agopianfc328812010-07-14 23:41:37 -0700134};
135
136// ---------------------------------------------------------------------------
137}; // namespace android
138
139#endif // ANDROID_SENSOR_SERVICE_H