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 void dump(util::ProtoOutputStream* proto) const; getUid()44 uid_t getUid() const { return mUid; } getOpPackageName()45 const String16& getOpPackageName() const { return mOpPackageName; } 46 int32_t getHalChannelHandle() const; 47 bool isEquivalent(const sensors_direct_mem_t *mem) const; 48 49 // Invoked when access to sensors for this connection has changed, e.g. lost or 50 // regained due to changes in the sensor restricted/privacy mode or the 51 // app changed to idle/active status. 52 void onSensorAccessChanged(bool hasAccess); 53 void onMicSensorAccessChanged(bool isMicToggleOn); getUserId()54 userid_t getUserId() const { return mUserId; } 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 bool hasSensorAccess() const; 69 70 // Stops all active sensor direct report requests. 71 // 72 // If backupRecord is true, stopped requests can be recovered 73 // by a subsequent recoverAll() call (e.g. when temporarily stopping 74 // sensors for sensor privacy/restrict mode or when an app becomes 75 // idle). 76 void stopAll(bool backupRecord = false); 77 // Same as stopAll() but with mConnectionLock held. 78 void stopAllLocked(bool backupRecord); 79 80 // Recover sensor requests previously stopped by stopAll(true). 81 // This method can be called when a sensor access resumes (e.g. 82 // sensor privacy/restrict mode lifted or app becomes active). 83 // 84 // If no requests are backed up by stopAll(), this method is no-op. 85 void recoverAll(); 86 87 // Limits all active sensor direct report requests when the mic toggle is flipped to on. 88 void capRates(); 89 // Recover sensor requests previously capped by capRates(). 90 void uncapRates(); 91 92 const sp<SensorService> mService; 93 const uid_t mUid; 94 const sensors_direct_mem_t mMem; 95 const int32_t mHalChannelHandle; 96 const String16 mOpPackageName; 97 98 mutable Mutex mConnectionLock; 99 std::unordered_map<int, int> mActivated; 100 std::unordered_map<int, int> mActivatedBackup; 101 std::unordered_map<int, int> mMicRateBackup; 102 103 std::atomic_bool mIsRateCappedBasedOnPermission; 104 mutable Mutex mDestroyLock; 105 bool mDestroyed; 106 userid_t mUserId; 107 }; 108 109 } // namepsace android 110 111 #endif // ANDROID_SENSOR_DIRECT_CONNECTION_H 112 113