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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 SERVICES_DEVICE_GENERIC_SENSOR_LINUX_SENSOR_DATA_LINUX_H_ | |
| 6 #define SERVICES_DEVICE_GENERIC_SENSOR_LINUX_SENSOR_DATA_LINUX_H_ | |
| 7 | |
| 8 #include "services/device/public/interfaces/sensor.mojom.h" | |
| 9 | |
| 10 namespace device { | |
| 11 | |
| 12 class PlatformSensorConfiguration; | |
| 13 struct SensorReading; | |
| 14 | |
| 15 // This structure represents a context that is used to identify a udev device | |
| 16 // and create a type specific SensorInfoLinux. For example, when a | |
| 17 // SensorDeviceManager receives a udev device, it uses this structure to | |
| 18 // identify what type of sensor that is and creates a SensorInfoLinux structure | |
| 19 // that holds all the necessary information to create a PlatformSensorLinux. | |
| 20 struct SensorPathsLinux { | |
| 21 using ReaderFunctor = base::Callback< | |
| 22 void(double scaling, double offset, SensorReading& reading)>; | |
| 23 | |
| 24 SensorPathsLinux(); | |
| 25 ~SensorPathsLinux(); | |
| 26 SensorPathsLinux(const SensorPathsLinux& other); | |
| 27 // Provides an array of sensor file names to be searched for. | |
| 28 // Different sensors might have up to 3 different file name arrays. | |
| 29 // One file must be found from each array. | |
| 30 std::vector<std::vector<std::string>> sensor_file_names; | |
| 31 // Scaling file to be found. | |
| 32 std::string sensor_scale_name; | |
| 33 // Frequency file to be found. | |
| 34 std::string sensor_frequency_file_name; | |
| 35 // Offset file to be found. | |
| 36 std::string sensor_offset_file_name; | |
| 37 // Used to apply scalings to raw sensor data. | |
| 38 ReaderFunctor apply_scaling_func; | |
| 39 // Sensor type | |
| 40 mojom::SensorType type; | |
| 41 // Default configuration of a sensor. | |
| 42 PlatformSensorConfiguration default_configuration; | |
| 43 }; | |
| 44 | |
| 45 // Initializes sensor data according to |type|. | |
| 46 bool InitSensorData(mojom::SensorType type, SensorPathsLinux* data); | |
| 47 | |
| 48 // This structure represents an iio device, which info is taken | |
| 49 // from udev service. If a client requests a sensor from a provider, | |
| 50 // the provider takes this initialized and stored structure and uses it to | |
| 51 // create a requested PlatformSensorLinux of a certain type. | |
| 52 struct SensorInfoLinux { | |
| 53 // Represents current sensor device node. | |
| 54 const std::string device_node; | |
| 55 // Represents frequency of a sensor. | |
| 56 const double device_frequency; | |
| 57 // Represents scaling value to be applied on raw data. | |
| 58 const double device_scaling_value; | |
| 59 // Represents offset value that must be applied on raw data. | |
| 60 const double device_offset_value; | |
| 61 // Reporting mode of a sensor taken from SensorDataLinux. | |
| 62 const mojom::ReportingMode reporting_mode; | |
| 63 // Functor that is used to convert raw data. | |
| 64 const SensorPathsLinux::ReaderFunctor apply_scaling_func; | |
| 65 // Sensor files in sysfs. Used to poll data. | |
| 66 const std::vector<base::FilePath> device_reading_files; | |
| 67 | |
| 68 SensorInfoLinux(const std::string& sensor_device_node, | |
| 69 double sensor_device_frequency, | |
| 70 double sensor_device_scaling_value, | |
| 71 double sensor_device_offset_value, | |
| 72 mojom::ReportingMode mode, | |
| 73 SensorPathsLinux::ReaderFunctor scaling_func, | |
| 74 std::vector<base::FilePath> iio_device_reading_files); | |
| 75 ~SensorInfoLinux(); | |
| 76 }; | |
| 77 | |
| 78 } // namespace device | |
| 79 | |
| 80 #endif // SERVICES_DEVICE_GENERIC_SENSOR_LINUX_SENSOR_DATA_LINUX_H_ | |
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Chromium Code Reviews
Issue 2898433002:
Revert of Move //device/generic_sensor to be part of the internal implementation of the Device Service. (Closed)
