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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_MANAGER_H
     18 #define ANDROID_GUI_SENSOR_MANAGER_H
     19 
     20 #include <stdint.h>
     21 #include <sys/types.h>
     22 
     23 #include <binder/IBinder.h>
     24 
     25 #include <utils/Errors.h>
     26 #include <utils/RefBase.h>
     27 #include <utils/Singleton.h>
     28 #include <utils/Vector.h>
     29 
     30 #include <gui/SensorEventQueue.h>
     31 
     32 // ----------------------------------------------------------------------------
     33 // Concrete types for the NDK
     34 struct ASensorManager { };
     35 
     36 // ----------------------------------------------------------------------------
     37 namespace android {
     38 // ----------------------------------------------------------------------------
     39 
     40 class ISensorServer;
     41 class Sensor;
     42 class SensorEventQueue;
     43 
     44 // ----------------------------------------------------------------------------
     45 
     46 class SensorManager :
     47     public ASensorManager,
     48     public Singleton<SensorManager>
     49 {
     50 public:
     51     SensorManager();
     52     ~SensorManager();
     53 
     54     ssize_t getSensorList(Sensor const* const** list) const;
     55     Sensor const* getDefaultSensor(int type);
     56     sp<SensorEventQueue> createEventQueue();
     57 
     58 private:
     59     // DeathRecipient interface
     60     void sensorManagerDied();
     61 
     62     status_t assertStateLocked() const;
     63 
     64 private:
     65     mutable Mutex mLock;
     66     mutable sp<ISensorServer> mSensorServer;
     67     mutable Sensor const** mSensorList;
     68     mutable Vector<Sensor> mSensors;
     69     mutable sp<IBinder::DeathRecipient> mDeathObserver;
     70 };
     71 
     72 // ----------------------------------------------------------------------------
     73 }; // namespace android
     74 
     75 #endif // ANDROID_GUI_SENSOR_MANAGER_H
     76