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, int deviceId); 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; } getDeviceId()56 int getDeviceId() const { return mDeviceId; } 57 58 protected: 59 virtual ~SensorDirectConnection(); 60 // ISensorEventConnection functions 61 virtual void onFirstRef(); 62 virtual sp<BitTube> getSensorChannel() const; 63 virtual status_t enableDisable(int handle, bool enabled, nsecs_t samplingPeriodNs, 64 nsecs_t maxBatchReportLatencyNs, int reservedFlags); 65 virtual status_t setEventRate(int handle, nsecs_t samplingPeriodNs); 66 virtual status_t flush(); 67 virtual int32_t configureChannel(int handle, int rateLevel); 68 virtual void destroy(); 69 private: 70 bool hasSensorAccess() const; 71 72 // Sends the configuration to the relevant sensor device. 73 int configure(int handle, const sensors_direct_cfg_t* config); 74 75 // Stops all active sensor direct report requests. 76 // 77 // If backupRecord is true, stopped requests can be recovered 78 // by a subsequent recoverAll() call (e.g. when temporarily stopping 79 // sensors for sensor privacy/restrict mode or when an app becomes 80 // idle). 81 void stopAll(bool backupRecord = false); 82 // Same as stopAll() but with mConnectionLock held. 83 void stopAllLocked(bool backupRecord); 84 85 // Recover sensor requests previously stopped by stopAll(true). 86 // This method can be called when a sensor access resumes (e.g. 87 // sensor privacy/restrict mode lifted or app becomes active). 88 // 89 // If no requests are backed up by stopAll(), this method is no-op. 90 void recoverAll(); 91 92 // Limits all active sensor direct report requests when the mic toggle is flipped to on. 93 void capRates(); 94 // Recover sensor requests previously capped by capRates(). 95 void uncapRates(); 96 97 const sp<SensorService> mService; 98 const uid_t mUid; 99 const sensors_direct_mem_t mMem; 100 const int32_t mHalChannelHandle; 101 const String16 mOpPackageName; 102 const int mDeviceId; 103 104 mutable Mutex mConnectionLock; 105 std::unordered_map<int, int> mActivated; 106 std::unordered_map<int, int> mActivatedBackup; 107 std::unordered_map<int, int> mMicRateBackup; 108 109 mutable Mutex mDestroyLock; 110 bool mDestroyed; 111 userid_t mUserId; 112 113 std::optional<bool> mIsRateCappedBasedOnPermission; 114 isRateCappedBasedOnPermission()115 bool isRateCappedBasedOnPermission() { 116 if (!mIsRateCappedBasedOnPermission.has_value()) { 117 mIsRateCappedBasedOnPermission = 118 mService->isRateCappedBasedOnPermission(mOpPackageName); 119 } 120 return mIsRateCappedBasedOnPermission.value(); 121 } 122 }; 123 124 } // namepsace android 125 126 #endif // ANDROID_SENSOR_DIRECT_CONNECTION_H 127 128