diff options
Diffstat (limited to 'services/sensorservice/SensorService.h')
| -rw-r--r-- | services/sensorservice/SensorService.h | 59 |
1 files changed, 55 insertions, 4 deletions
diff --git a/services/sensorservice/SensorService.h b/services/sensorservice/SensorService.h index e9ca3a5..4d34471 100644 --- a/services/sensorservice/SensorService.h +++ b/services/sensorservice/SensorService.h @@ -27,6 +27,7 @@ #include <utils/AndroidThreads.h> #include <utils/RefBase.h> #include <utils/Looper.h> +#include <utils/String8.h> #include <binder/BinderService.h> @@ -65,6 +66,39 @@ class SensorService : { friend class BinderService<SensorService>; + enum Mode { + // The regular operating mode where any application can register/unregister/call flush on + // sensors. + NORMAL = 0, + // This mode is only used for testing purposes. Not all HALs support this mode. In this + // mode, the HAL ignores the sensor data provided by physical sensors and accepts the data + // that is injected from the SensorService as if it were the real sensor data. This mode + // is primarily used for testing various algorithms like vendor provided SensorFusion, + // Step Counter and Step Detector etc. Typically in this mode, there will be a client + // (a SensorEventConnection) which will be injecting sensor data into the HAL. Normal apps + // can unregister and register for any sensor that supports injection. Registering to sensors + // that do not support injection will give an error. + // TODO(aakella) : Allow exactly one client to inject sensor data at a time. + DATA_INJECTION = 1, + // This mode is used only for testing sensors. Each sensor can be tested in isolation with + // the required sampling_rate and maxReportLatency parameters without having to think about + // the data rates requested by other applications. End user devices are always expected to be + // in NORMAL mode. When this mode is first activated, all active sensors from all connections + // are disabled. Calling flush() will return an error. In this mode, only the requests from + // selected apps whose package names are whitelisted are allowed (typically CTS apps). Only + // these apps can register/unregister/call flush() on sensors. If SensorService switches to + // NORMAL mode again, all sensors that were previously registered to are activated with the + // corresponding paramaters if the application hasn't unregistered for sensors in the mean + // time. + // NOTE: Non whitelisted app whose sensors were previously deactivated may still receive + // events if a whitelisted app requests data from the same sensor. + RESTRICTED = 2 + + // State Transitions supported. + // RESTRICTED <--- NORMAL ---> DATA_INJECTION + // ---> <--- + }; + static const char* WAKE_LOCK_NAME; static char const* getServiceName() ANDROID_API { return "sensorservice"; } @@ -78,7 +112,9 @@ class SensorService : // ISensorServer interface virtual Vector<Sensor> getSensorList(); - virtual sp<ISensorEventConnection> createSensorEventConnection(); + virtual sp<ISensorEventConnection> createSensorEventConnection(const String8& packageName, + int requestedMode); + virtual status_t enableDataInjection(int enable); virtual status_t dump(int fd, const Vector<String16>& args); class SensorEventConnection : public BnSensorEventConnection, public LooperCallback { @@ -133,7 +169,6 @@ class SensorService : // connection FD may be added to the Looper. The flags to set are determined by the internal // state of the connection. FDs are added to the looper when wake-up sensors are registered // (to poll for acknowledgements) and when write fails on the socket when there are too many - // events (to poll when the FD is available for writing). FDs are removed when there is an // error and the other end hangs up or when this client unregisters for this connection. void updateLooperRegistration(const sp<Looper>& looper); void updateLooperRegistrationLocked(const sp<Looper>& looper); @@ -156,6 +191,8 @@ class SensorService : // mWakeLockRefCount is reset to zero. needsWakeLock method will always return false, if // this flag is set. bool mDead; + + bool mDataInjectionMode; struct FlushInfo { // The number of flush complete events dropped for this sensor is stored here. // They are sent separately before the next batch of events. @@ -169,14 +206,15 @@ class SensorService : KeyedVector<int, FlushInfo> mSensorInfo; sensors_event_t *mEventCache; int mCacheSize, mMaxCacheSize; - + String8 mPackageName; #if DEBUG_CONNECTIONS int mEventsReceived, mEventsSent, mEventsSentFromCache; int mTotalAcksNeeded, mTotalAcksReceived; #endif public: - SensorEventConnection(const sp<SensorService>& service, uid_t uid); + SensorEventConnection(const sp<SensorService>& service, uid_t uid, String8 packageName, + bool isDataInjectionMode); status_t sendEvents(sensors_event_t const* buffer, size_t count, sensors_event_t* scratch, @@ -190,6 +228,7 @@ class SensorService : void dump(String8& result); bool needsWakeLock(); void resetWakeLockRefCount(); + String8 getPackageName() const; uid_t getUid() const { return mUid; } }; @@ -208,6 +247,7 @@ class SensorService : void addPendingFlushConnection(const sp<SensorEventConnection>& connection); void removeFirstPendingFlushConnection(); SensorEventConnection * getFirstPendingFlushConnection(); + void clearAllPendingFlushConnections(); }; class SensorEventAckReceiver : public Thread { @@ -233,6 +273,7 @@ class SensorService : sensors_event_t const* buffer, const int count); static bool canAccessSensor(const Sensor& sensor); static bool verifyCanAccessSensor(const Sensor& sensor, const char* operation); + static bool hasDataInjectionPermissions(); // SensorService acquires a partial wakelock for delivering events from wake up sensors. This // method checks whether all the events from these wake up sensors have been delivered to the // corresponding applications, if yes the wakelock is released. @@ -261,6 +302,15 @@ class SensorService : // to the output vector. void populateActiveConnections(SortedVector< sp<SensorEventConnection> >* activeConnections); + // If SensorService is operating in RESTRICTED mode, only select whitelisted packages are + // allowed to register for or call flush on sensors. Typically only cts test packages are + // allowed. + bool isWhiteListedPackage(const String8& packageName); + + // Reset the state of SensorService to NORMAL mode. + status_t resetToNormalMode(); + status_t resetToNormalModeLocked(); + // constants Vector<Sensor> mSensorList; Vector<Sensor> mUserSensorListDebug; @@ -282,6 +332,7 @@ class SensorService : bool mWakeLockAcquired; sensors_event_t *mSensorEventBuffer, *mSensorEventScratch; SensorEventConnection const **mMapFlushEventsToConnections; + Mode mCurrentOperatingMode; // The size of this vector is constant, only the items are mutable KeyedVector<int32_t, sensors_event_t> mLastEventSeen; |