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1 // Copyright 2016 The Chromium Authors. All rights reserved. | 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 | 2 // Use of this source code is governed by a BSD-style license that can be |
3 // found in the LICENSE file. | 3 // found in the LICENSE file. |
4 | 4 |
5 #ifndef DEVICE_GENERIC_SENSOR_PLATFORM_SENSOR_PROVIDER_BASE_H_ | 5 #ifndef DEVICE_GENERIC_SENSOR_PLATFORM_SENSOR_PROVIDER_BASE_H_ |
6 #define DEVICE_GENERIC_SENSOR_PLATFORM_SENSOR_PROVIDER_BASE_H_ | 6 #define DEVICE_GENERIC_SENSOR_PLATFORM_SENSOR_PROVIDER_BASE_H_ |
7 | 7 |
8 #include "base/macros.h" | 8 #include "base/macros.h" |
9 | 9 |
10 #include "base/threading/non_thread_safe.h" | 10 #include "base/threading/non_thread_safe.h" |
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46 | 46 |
47 // Method that must be implemented by platform specific classes. | 47 // Method that must be implemented by platform specific classes. |
48 virtual void CreateSensorInternal(mojom::SensorType type, | 48 virtual void CreateSensorInternal(mojom::SensorType type, |
49 mojo::ScopedSharedBufferMapping mapping, | 49 mojo::ScopedSharedBufferMapping mapping, |
50 const CreateSensorCallback& callback) = 0; | 50 const CreateSensorCallback& callback) = 0; |
51 | 51 |
52 // Implementations might override this method to free resources when there | 52 // Implementations might override this method to free resources when there |
53 // are no sensors left. | 53 // are no sensors left. |
54 virtual void AllSensorsRemoved() {} | 54 virtual void AllSensorsRemoved() {} |
55 | 55 |
| 56 // Implementations might override this method to know what type of sensor |
| 57 // has been removed. |
| 58 virtual void SensorRemoved(mojom::SensorType type) {} |
| 59 |
56 private: | 60 private: |
57 friend class PlatformSensor; // To call RemoveSensor(); | 61 friend class PlatformSensor; // To call RemoveSensor(); |
58 | 62 |
59 bool CreateSharedBufferIfNeeded(); | 63 bool CreateSharedBufferIfNeeded(); |
60 void RemoveSensor(mojom::SensorType type); | 64 void RemoveSensor(mojom::SensorType type); |
61 void NotifySensorCreated(mojom::SensorType type, | 65 void NotifySensorCreated(mojom::SensorType type, |
62 scoped_refptr<PlatformSensor> sensor); | 66 scoped_refptr<PlatformSensor> sensor); |
63 | 67 |
64 private: | 68 private: |
65 using CallbackQueue = std::vector<CreateSensorCallback>; | 69 using CallbackQueue = std::vector<CreateSensorCallback>; |
66 | 70 |
67 std::map<mojom::SensorType, PlatformSensor*> sensor_map_; | 71 std::map<mojom::SensorType, PlatformSensor*> sensor_map_; |
68 std::map<mojom::SensorType, CallbackQueue> requests_map_; | 72 std::map<mojom::SensorType, CallbackQueue> requests_map_; |
69 mojo::ScopedSharedBufferHandle shared_buffer_handle_; | 73 mojo::ScopedSharedBufferHandle shared_buffer_handle_; |
70 | 74 |
71 DISALLOW_COPY_AND_ASSIGN(PlatformSensorProviderBase); | 75 DISALLOW_COPY_AND_ASSIGN(PlatformSensorProviderBase); |
72 }; | 76 }; |
73 | 77 |
74 } // namespace device | 78 } // namespace device |
75 | 79 |
76 #endif // DEVICE_GENERIC_SENSOR_PLATFORM_SENSOR_PROVIDER_BASE_H_ | 80 #endif // DEVICE_GENERIC_SENSOR_PLATFORM_SENSOR_PROVIDER_BASE_H_ |
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