1 /*
2 * Copyright (C) 2012 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_BUBBLE_LEVEL_IMPL_
18 #define ANDROID_BUBBLE_LEVEL_IMPL_
19
20 #include "BubbleLevel.h"
21 #include <utils/Looper.h>
22 #include <gui/Sensor.h>
23 #include <gui/SensorManager.h>
24 #include <gui/SensorEventQueue.h>
25
26
27 namespace android {
28
29 class BubbleLevelImpl : public Thread
30 {
31 public:
32
33 BubbleLevelImpl();
34 virtual ~BubbleLevelImpl();
35
initStatus()36 int initStatus() const { return mInitStatus; }
37
38 // BubbleLevel interface
39 int setCallback(BubbleLevel_CallBack_t callback, void *userData);
40 int setPollInterval(unsigned int seconds);
41 int startPolling();
42 int stopPolling();
43 int pollOnce();
44
45 // RefBase
46 virtual void onFirstRef();
47 // Thread virtuals
48 virtual bool threadLoop();
49
50 enum state {
51 BL_STATE_IDLE,
52 BL_STATE_POLLING,
53 BL_STATE_POLLING_ONCE,
54 BL_STATE_SLEEPING,
55 };
56
state()57 uint32_t state() const { return mState; }
lockState()58 void lockState() { mStateLock.lock(); }
unlockState()59 void unlockState() { mStateLock.unlock(); }
pollCount()60 uint32_t pollCount() { return mPollCount; }
incPollCount()61 void incPollCount() { mPollCount++; }
incLevelCount()62 void incLevelCount() { mLevelCount++; }
sensorEventQueue()63 sp<SensorEventQueue> sensorEventQueue() const { return mSensorEventQueue; }
numSensors()64 size_t numSensors() const { return mNumSensors; }
65
66 private:
67 enum command {
68 BL_CMD_NONE,
69 BL_CMD_START_POLL,
70 BL_CMD_STOP_POLL,
71 BL_CMD_POLL_ONCE,
72 BL_CMD_EXIT,
73 };
74
75 int init();
76
77 Mutex mStateLock;
78 Mutex mCallbackLock;
79 Condition mCond;
80 uint32_t mState;
81 uint32_t mCmd;
82 uint32_t mPollIntervalSec;
83 uint32_t mPollCount;
84 uint32_t mLevelCount;
85
86 BubbleLevel_CallBack_t mCallBack;
87 void *mUserData;
88
89 size_t mNumSensors;
90 Sensor const* mAccelerometer;
91 sp<SensorEventQueue> mSensorEventQueue;
92 sp<Looper> mLooper;
93 int mInitStatus;
94 };
95
96 };
97
98 class BubbleLevelBase: public BubbleLevel
99 {
100 public:
BubbleLevelBase()101 BubbleLevelBase() { mBubbleLevel = new android::BubbleLevelImpl(); }
~BubbleLevelBase()102 virtual ~BubbleLevelBase() {}
103
initStatus()104 int initStatus() {
105 return mBubbleLevel->initStatus();
106 }
107
108 // BubbleLevel interface
setCallback(BubbleLevel_CallBack_t callback,void * userData)109 virtual int setCallback(BubbleLevel_CallBack_t callback, void *userData) {
110 return mBubbleLevel->setCallback(callback, userData);
111 }
setPollInterval(unsigned int seconds)112 virtual int setPollInterval(unsigned int seconds) {
113 return mBubbleLevel->setPollInterval(seconds);
114 }
startPolling()115 virtual int startPolling() {
116 return mBubbleLevel->startPolling();
117 }
stopPolling()118 virtual int stopPolling() {
119 return mBubbleLevel->stopPolling();
120 }
pollOnce()121 virtual int pollOnce() {
122 return mBubbleLevel->pollOnce();
123 }
124
125 private:
126 android::sp<android::BubbleLevelImpl> mBubbleLevel;
127 };
128
create()129 BubbleLevel *BubbleLevel::create() {
130 BubbleLevelBase *bl = new BubbleLevelBase();
131
132 if (bl->initStatus() != 0) {
133 delete bl;
134 bl = NULL;
135 }
136 return static_cast<BubbleLevel *>(bl);
137 }
138
139 struct bubble_level_C_impl
140 {
141 struct bubble_level interface;
142 android::sp<android::BubbleLevelImpl> bubble_level;
143 };
144
145 #endif /*ANDROID_BUBBLE_LEVEL_IMPL_*/
146