path: root/inc/SensorListener.h (plain)
blob: 7b9a97829e155319dbc3f58b37e69a7d61443b7d

1	/*
2	* Copyright (C) 2011 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	/**
18	* @file SensorListener.h
19	*
20	* This defines API for camerahal to get sensor events
21	*
22	*/
23
24	#ifndef ANDROID_CAMERA_HARDWARE_SENSOR_LISTENER_H
25	#define ANDROID_CAMERA_HARDWARE_SENSOR_LISTENER_H
26
27	#include <android/sensor.h>
28	#include <gui/Sensor.h>
29	#include <gui/SensorManager.h>
30	#include <gui/SensorEventQueue.h>
31	#include <utils/Looper.h>
32
33	namespace android {
34
35	/**
36	* SensorListner class - Registers with sensor manager to get sensor events
37	*/
38
39	typedef void (*orientation_callback_t) (uint32_t orientation, uint32_t tilt, void* cookie);
40
41	class SensorLooperThread : public Thread {
42	public:
43	SensorLooperThread(Looper* looper)
44	: Thread(false) {
45	mLooper = sp<Looper>(looper);
46	}
47	~SensorLooperThread() {
48	mLooper.clear();
49	}
50
51	virtual bool threadLoop() {
52	int32_t ret = mLooper->pollOnce(-1);
53	return true;
54	}
55
56	// force looper wake up
57	void wake() {
58	mLooper->wake();
59	}
60	private:
61	sp<Looper> mLooper;
62	};
63
64
65	class SensorListener : public RefBase
66	{
67	/* public - types */
68	public:
69	typedef enum {
70	SENSOR_ACCELEROMETER = 1 << 0,
71	SENSOR_MAGNETIC_FIELD = 1 << 1,
72	SENSOR_GYROSCOPE = 1 << 2,
73	SENSOR_LIGHT = 1 << 3,
74	SENSOR_PROXIMITY = 1 << 4,
75	SENSOR_ORIENTATION = 1 << 5,
76	} sensor_type_t;
77	/* public - functions */
78	public:
79	SensorListener();
80	~SensorListener();
81	status_t initialize();
82	void setCallbacks(orientation_callback_t orientation_cb, void *cookie);
83	void enableSensor(sensor_type_t type);
84	void disableSensor(sensor_type_t type);
85	void handleOrientation(uint32_t orientation, uint32_t tilt);
86	/* public - member variables */
87	public:
88	sp<SensorEventQueue> mSensorEventQueue;
89	/* private - member variables */
90	private:
91	int sensorsEnabled;
92	orientation_callback_t mOrientationCb;
93	void *mCbCookie;
94	sp<Looper> mLooper;
95	sp<SensorLooperThread> mSensorLooperThread;
96	Mutex mLock;
97	};
98
99	}
100
101	#endif
102