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| 1 // Copyright 2016 The Chromium Authors. All rights reserved. |
| 2 // Use of this source code is governed by a BSD-style license that can be |
| 3 // found in the LICENSE file. |
| 4 |
| 5 #ifndef DEVICE_GENERIC_PLATFORM_SENSOR_AMBIENT_LIGHT_SENSOR_MAC_H_ |
| 6 #define DEVICE_GENERIC_PLATFORM_SENSOR_AMBIENT_LIGHT_SENSOR_MAC_H_ |
| 7 |
| 8 #include <IOKit/IOKitLib.h> |
| 9 |
| 10 #include "base/mac/scoped_ionotificationportref.h" |
| 11 #include "base/mac/scoped_ioobject.h" |
| 12 #include "device/generic_sensor/platform_sensor.h" |
| 13 |
| 14 namespace base { |
| 15 class SingleThreadTaskRunner; |
| 16 } |
| 17 |
| 18 namespace device { |
| 19 |
| 20 // Implementation of PlatformSensor for macOS to query the ambient light sensor. |
| 21 // This is a single instance object per browser process which is created by |
| 22 // The singleton PlatformSensorProviderMac. If there are no clients, this |
| 23 // instance is not created. |
| 24 class PlatformSensorAmbientLightMac : public PlatformSensor { |
| 25 public: |
| 26 // Construct a platform sensor of |type| AMBIENT_LIGHT, given |
| 27 // a buffer |mapping| to write the result back. |task_runner| is |
| 28 // used to post the notification that the sensor reading has changed. |
| 29 PlatformSensorAmbientLightMac(mojom::SensorType type, |
| 30 mojo::ScopedSharedBufferMapping mapping, |
| 31 PlatformSensorProvider* provider); |
| 32 |
| 33 mojom::ReportingMode GetReportingMode() override; |
| 34 // Can only be called once, the first time or after a StopSensor call. |
| 35 bool StartSensor(const PlatformSensorConfiguration& configuration) override; |
| 36 void StopSensor() override; |
| 37 |
| 38 protected: |
| 39 ~PlatformSensorAmbientLightMac() override; |
| 40 bool CheckSensorConfiguration( |
| 41 const PlatformSensorConfiguration& configuration) override; |
| 42 PlatformSensorConfiguration GetDefaultConfiguration() override; |
| 43 void UpdateReading(uint64_t lux_values[2]); |
| 44 |
| 45 private: |
| 46 static void IOServiceCallback(void* context, |
| 47 io_service_t service, |
| 48 natural_t message_type, |
| 49 void* message_argument); |
| 50 |
| 51 // IOService representing the LMU sensor. |
| 52 base::mac::ScopedIOObject<io_service_t> light_sensor_service_; |
| 53 // Port used to get the notifications from the sensor. |
| 54 base::mac::ScopedIONotificationPortRef light_sensor_port_; |
| 55 // IO Object used to query the value of the sensor. |
| 56 base::mac::ScopedIOObject<io_object_t> light_sensor_object_; |
| 57 // IO Notifications created by IOServiceAddInterestNotification. |
| 58 base::mac::ScopedIOObject<io_object_t> light_sensor_notification_; |
| 59 double current_lux_; |
| 60 |
| 61 DISALLOW_COPY_AND_ASSIGN(PlatformSensorAmbientLightMac); |
| 62 }; |
| 63 |
| 64 } // namespace device |
| 65 |
| 66 #endif // DEVICE_GENERIC_PLATFORM_SENSOR_AMBIENT_LIGHT_SENSOR_MAC_H_ |
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