Home | History | Annotate | Download | only in sensorservice 
      1 /*
      2  * Copyright (C) 2016 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_DIRECT_CONNECTION_H
     18 #define ANDROID_SENSOR_DIRECT_CONNECTION_H
     19 
     20 #include <stdint.h>
     21 #include <sys/types.h>
     22 
     23 #include <binder/BinderService.h>
     24 
     25 #include <sensor/Sensor.h>
     26 #include <sensor/BitTube.h>
     27 #include <sensor/ISensorServer.h>
     28 #include <sensor/ISensorEventConnection.h>
     29 
     30 #include "SensorService.h"
     31 
     32 namespace android {
     33 
     34 class SensorService;
     35 class BitTube;
     36 
     37 class SensorService::SensorDirectConnection: public BnSensorEventConnection {
     38 public:
     39     SensorDirectConnection(const sp<SensorService>& service, uid_t uid,
     40             const sensors_direct_mem_t *mem, int32_t halChannelHandle,
     41             const String16& opPackageName);
     42     void dump(String8& result) const;
     43     uid_t getUid() const { return mUid; }
     44     int32_t getHalChannelHandle() const;
     45     bool isEquivalent(const sensors_direct_mem_t *mem) const;
     46 
     47     // stop all active sensor report. if backupRecord is set to false,
     48     // those report can be recovered by recoverAll
     49     // called by SensorService when enter restricted mode
     50     void stopAll(bool backupRecord = false);
     51 
     52     // recover sensor reports previously stopped by stopAll(true)
     53     // called by SensorService when return to NORMAL mode.
     54     void recoverAll();
     55 
     56 protected:
     57     virtual ~SensorDirectConnection();
     58     // ISensorEventConnection functions
     59     virtual void onFirstRef();
     60     virtual sp<BitTube> getSensorChannel() const;
     61     virtual status_t enableDisable(int handle, bool enabled, nsecs_t samplingPeriodNs,
     62                                    nsecs_t maxBatchReportLatencyNs, int reservedFlags);
     63     virtual status_t setEventRate(int handle, nsecs_t samplingPeriodNs);
     64     virtual status_t flush();
     65     virtual int32_t configureChannel(int handle, int rateLevel);
     66     virtual void destroy();
     67 private:
     68     const sp<SensorService> mService;
     69     const uid_t mUid;
     70     const sensors_direct_mem_t mMem;
     71     const int32_t mHalChannelHandle;
     72     const String16 mOpPackageName;
     73 
     74     mutable Mutex mConnectionLock;
     75     std::unordered_map<int, int> mActivated;
     76     std::unordered_map<int, int> mActivatedBackup;
     77 
     78     mutable Mutex mDestroyLock;
     79     bool mDestroyed;
     80 };
     81 
     82 } // namepsace android
     83 
     84 #endif // ANDROID_SENSOR_DIRECT_CONNECTION_H
     85 
     86