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 <optional> 21 #include <stdint.h> 22 #include <sys/types.h> 23 24 #include <binder/BinderService.h> 25 26 #include <sensor/Sensor.h> 27 #include <sensor/BitTube.h> 28 #include <sensor/ISensorServer.h> 29 #include <sensor/ISensorEventConnection.h> 30 31 #include "SensorService.h" 32 33 namespace android { 34 35 class SensorService; 36 class BitTube; 37 38 class SensorService::SensorDirectConnection: public BnSensorEventConnection { 39 public: 40 SensorDirectConnection(const sp<SensorService>& service, uid_t uid, 41 const sensors_direct_mem_t *mem, int32_t halChannelHandle, 42 const String16& opPackageName); 43 void dump(String8& result) const; 44 void dump(util::ProtoOutputStream* proto) const; getUid()45 uid_t getUid() const { return mUid; } getOpPackageName()46 const String16& getOpPackageName() const { return mOpPackageName; } 47 int32_t getHalChannelHandle() const; 48 bool isEquivalent(const sensors_direct_mem_t *mem) const; 49 50 // Invoked when access to sensors for this connection has changed, e.g. lost or 51 // regained due to changes in the sensor restricted/privacy mode or the 52 // app changed to idle/active status. 53 void onSensorAccessChanged(bool hasAccess); 54 void onMicSensorAccessChanged(bool isMicToggleOn); getUserId()55 userid_t getUserId() const { return mUserId; } 56 57 protected: 58 virtual ~SensorDirectConnection(); 59 // ISensorEventConnection functions 60 virtual void onFirstRef(); 61 virtual sp<BitTube> getSensorChannel() const; 62 virtual status_t enableDisable(int handle, bool enabled, nsecs_t samplingPeriodNs, 63 nsecs_t maxBatchReportLatencyNs, int reservedFlags); 64 virtual status_t setEventRate(int handle, nsecs_t samplingPeriodNs); 65 virtual status_t flush(); 66 virtual int32_t configureChannel(int handle, int rateLevel); 67 virtual void destroy(); 68 private: 69 bool hasSensorAccess() const; 70 71 // Stops all active sensor direct report requests. 72 // 73 // If backupRecord is true, stopped requests can be recovered 74 // by a subsequent recoverAll() call (e.g. when temporarily stopping 75 // sensors for sensor privacy/restrict mode or when an app becomes 76 // idle). 77 void stopAll(bool backupRecord = false); 78 // Same as stopAll() but with mConnectionLock held. 79 void stopAllLocked(bool backupRecord); 80 81 // Recover sensor requests previously stopped by stopAll(true). 82 // This method can be called when a sensor access resumes (e.g. 83 // sensor privacy/restrict mode lifted or app becomes active). 84 // 85 // If no requests are backed up by stopAll(), this method is no-op. 86 void recoverAll(); 87 88 // Limits all active sensor direct report requests when the mic toggle is flipped to on. 89 void capRates(); 90 // Recover sensor requests previously capped by capRates(). 91 void uncapRates(); 92 93 const sp<SensorService> mService; 94 const uid_t mUid; 95 const sensors_direct_mem_t mMem; 96 const int32_t mHalChannelHandle; 97 const String16 mOpPackageName; 98 99 mutable Mutex mConnectionLock; 100 std::unordered_map<int, int> mActivated; 101 std::unordered_map<int, int> mActivatedBackup; 102 std::unordered_map<int, int> mMicRateBackup; 103 104 mutable Mutex mDestroyLock; 105 bool mDestroyed; 106 userid_t mUserId; 107 108 std::optional<bool> mIsRateCappedBasedOnPermission; 109 isRateCappedBasedOnPermission()110 bool isRateCappedBasedOnPermission() { 111 if (!mIsRateCappedBasedOnPermission.has_value()) { 112 mIsRateCappedBasedOnPermission = 113 mService->isRateCappedBasedOnPermission(mOpPackageName); 114 } 115 return mIsRateCappedBasedOnPermission.value(); 116 } 117 }; 118 119 } // namepsace android 120 121 #endif // ANDROID_SENSOR_DIRECT_CONNECTION_H 122 123