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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_SENSOR_LINUX_PLATFORM_SENSOR_UTILS_LINUX_H_ |
| 6 #define DEVICE_GENERIC_SENSOR_LINUX_PLATFORM_SENSOR_UTILS_LINUX_H_ |
| 7 |
| 8 #include "base/files/file_path.h" |
| 9 #include "base/memory/ptr_util.h" |
| 10 #include "device/generic_sensor/generic_sensor_export.h" |
| 11 |
| 12 namespace device { |
| 13 |
| 14 struct SensorDataLinux; |
| 15 struct SensorReading; |
| 16 |
| 17 // Generic reader class that reads sensors data from |
| 18 // sensors files located in the base iio folder. |
| 19 class DEVICE_GENERIC_SENSOR_EXPORT SensorReader { |
| 20 public: |
| 21 ~SensorReader(); |
| 22 |
| 23 // Creates a new instance of SensorReader if sensor read files |
| 24 // has been found and |sensor_paths_| are set. |
| 25 static std::unique_ptr<SensorReader> Create(const SensorDataLinux& data); |
| 26 |
| 27 // Reads sensor values into |*reading| from sensor files |
| 28 // specified in |sensor_paths_|. |
| 29 bool ReadSensorReading(SensorReading* reading); |
| 30 |
| 31 private: |
| 32 explicit SensorReader(std::vector<base::FilePath> sensor_paths); |
| 33 |
| 34 // Contains paths to sensor files that are set when |
| 35 // Create() is called. |
| 36 const std::vector<base::FilePath> sensor_paths_; |
| 37 |
| 38 DISALLOW_COPY_AND_ASSIGN(SensorReader); |
| 39 }; |
| 40 |
| 41 } // namespace device |
| 42 |
| 43 #endif // DEVICE_GENERIC_SENSOR_LINUX_PLATFORM_SENSOR_UTILS_LINUX_H_ |
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