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- // Copyright 2016 The Chromium Authors. All rights reserved.
- // Use of this source code is governed by a BSD-style license that can be
- // found in the LICENSE file.
- #ifndef SERVICES_DEVICE_GENERIC_SENSOR_PLATFORM_SENSOR_AMBIENT_LIGHT_MAC_H_
- #define SERVICES_DEVICE_GENERIC_SENSOR_PLATFORM_SENSOR_AMBIENT_LIGHT_MAC_H_
- #include <IOKit/IOKitLib.h>
- #include "base/mac/scoped_ionotificationportref.h"
- #include "base/mac/scoped_ioobject.h"
- #include "services/device/generic_sensor/platform_sensor.h"
- namespace device {
- // Implementation of PlatformSensor for macOS to query the ambient light sensor.
- // This is a single instance object per browser process which is created by
- // PlatformSensorProviderMac. If there are no clients, this instance is not
- // created.
- class PlatformSensorAmbientLightMac : public PlatformSensor {
- public:
- // Construct a platform sensor of AMBIENT_LIGHT, given a buffer |mapping|
- // to write the result back.
- PlatformSensorAmbientLightMac(SensorReadingSharedBuffer* reading_buffer,
- PlatformSensorProvider* provider);
- PlatformSensorAmbientLightMac(const PlatformSensorAmbientLightMac&) = delete;
- PlatformSensorAmbientLightMac& operator=(
- const PlatformSensorAmbientLightMac&) = delete;
- mojom::ReportingMode GetReportingMode() override;
- // Can only be called once, the first time or after a StopSensor call.
- bool StartSensor(const PlatformSensorConfiguration& configuration) override;
- void StopSensor() override;
- protected:
- ~PlatformSensorAmbientLightMac() override;
- bool CheckSensorConfiguration(
- const PlatformSensorConfiguration& configuration) override;
- PlatformSensorConfiguration GetDefaultConfiguration() override;
- private:
- bool ReadAndUpdate();
- static void IOServiceCallback(void* context,
- io_service_t service,
- natural_t message_type,
- void* message_argument);
- // IOService representing the LMU sensor.
- base::mac::ScopedIOObject<io_service_t> light_sensor_service_;
- // Port used to get the notifications from the sensor.
- base::mac::ScopedIONotificationPortRef light_sensor_port_;
- // IO Object used to query the value of the sensor.
- base::mac::ScopedIOObject<io_object_t> light_sensor_object_;
- // IO Notifications created by IOServiceAddInterestNotification.
- base::mac::ScopedIOObject<io_object_t> light_sensor_notification_;
- // IO Notifications created by IOServiceAddInterestNotification when the
- // sensor is busy.
- base::mac::ScopedIOObject<io_object_t> light_sensor_busy_notification_;
- double current_lux_;
- };
- } // namespace device
- #endif // SERVICES_DEVICE_GENERIC_SENSOR_PLATFORM_SENSOR_AMBIENT_LIGHT_MAC_H_
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