| // Copyright 2015 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 DEVICE_SENSORS_AMBIENT_LIGHT_MAC_H_ |
| #define DEVICE_SENSORS_AMBIENT_LIGHT_MAC_H_ |
| |
| #include <IOKit/IOKitLib.h> |
| #include <stdint.h> |
| |
| #include <memory> |
| |
| #include "base/macros.h" |
| |
| namespace device { |
| |
| // Provides an interface to retrieve ambient light data from MacBooks. |
| class AmbientLightSensor { |
| public: |
| // Create AmbientLightSensor object, return NULL if no valid is sensor found. |
| static std::unique_ptr<AmbientLightSensor> Create(); |
| |
| ~AmbientLightSensor(); |
| |
| // Retrieve lux values from Ambient Light Sensor. |
| bool ReadSensorValue(uint64_t lux_value[2]); |
| |
| private: |
| AmbientLightSensor(); |
| |
| // Probe the local hardware looking for Ambient Light sensor and |
| // initialize an I/O connection to it. |
| bool Init(); |
| |
| // IOKit connection to the local sensor. |
| io_connect_t io_connection_; |
| |
| DISALLOW_COPY_AND_ASSIGN(AmbientLightSensor); |
| }; |
| |
| } // namespace device |
| |
| #endif // DEVICE_SENSORS_AMBIENT_LIGHT_MAC_H_ |