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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 device { | |
15 | |
16 // Implementation of PlatformSensor for macOS to query the ambient light sensor. | |
17 // This is a single instance object per browser process which is created by | |
18 // The singleton PlatformSensorProviderMac. If there are no clients, this | |
19 // instance is not created. | |
20 class PlatformSensorAmbientLightMac : public PlatformSensor { | |
21 public: | |
22 // Construct a platform sensor of AMBIENT_LIGHT, given a buffer |mapping| | |
23 // to write the result back. | |
24 PlatformSensorAmbientLightMac(mojo::ScopedSharedBufferMapping mapping, | |
25 PlatformSensorProvider* provider); | |
26 | |
27 mojom::ReportingMode GetReportingMode() override; | |
28 // Can only be called once, the first time or after a StopSensor call. | |
29 bool StartSensor(const PlatformSensorConfiguration& configuration) override; | |
30 void StopSensor() override; | |
31 | |
32 protected: | |
33 ~PlatformSensorAmbientLightMac() override; | |
34 bool CheckSensorConfiguration( | |
35 const PlatformSensorConfiguration& configuration) override; | |
36 PlatformSensorConfiguration GetDefaultConfiguration() override; | |
37 | |
38 private: | |
39 bool ReadAndUpdate(); | |
40 static void IOServiceCallback(void* context, | |
41 io_service_t service, | |
42 natural_t message_type, | |
43 void* message_argument); | |
44 | |
45 // IOService representing the LMU sensor. | |
46 base::mac::ScopedIOObject<io_service_t> light_sensor_service_; | |
47 // Port used to get the notifications from the sensor. | |
48 base::mac::ScopedIONotificationPortRef light_sensor_port_; | |
49 // IO Object used to query the value of the sensor. | |
50 base::mac::ScopedIOObject<io_object_t> light_sensor_object_; | |
51 // IO Notifications created by IOServiceAddInterestNotification. | |
52 base::mac::ScopedIOObject<io_object_t> light_sensor_notification_; | |
53 // IO Notifications created by IOServiceAddInterestNotification when the | |
54 // sensor is busy. | |
55 base::mac::ScopedIOObject<io_object_t> light_sensor_busy_notification_; | |
56 double current_lux_; | |
57 | |
58 DISALLOW_COPY_AND_ASSIGN(PlatformSensorAmbientLightMac); | |
59 }; | |
60 | |
61 } // namespace device | |
62 | |
63 #endif // DEVICE_GENERIC_PLATFORM_SENSOR_AMBIENT_LIGHT_SENSOR_MAC_H_ | |
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