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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" |
11 #include "device/generic_sensor/platform_sensor.h" | 11 #include "device/generic_sensor/platform_sensor.h" |
12 | 12 |
13 namespace device { | 13 namespace device { |
14 | 14 |
15 // Base class that defines factory methods for PlatformSensor creation. | 15 // Base class that defines factory methods for PlatformSensor creation. |
16 // Its implementations must be accessed via GetInstance() method. | 16 // Its implementations must be accessed via GetInstance() method. |
17 class PlatformSensorProviderBase : public base::NonThreadSafe { | 17 class PlatformSensorProviderBase : public base::NonThreadSafe { |
18 public: | 18 public: |
19 using CreateSensorCallback = | 19 using CreateSensorCallback = |
20 base::Callback<void(scoped_refptr<PlatformSensor>)>; | 20 base::Callback<void(scoped_refptr<PlatformSensor>)>; |
21 | 21 |
22 // Creates new instance of PlatformSensor. | 22 // Creates new instance of PlatformSensor. |
23 void CreateSensor(mojom::SensorType type, | 23 void CreateSensor(mojom::SensorType type, |
24 uint64_t size, | |
25 uint64_t offset, | |
26 const CreateSensorCallback& callback); | 24 const CreateSensorCallback& callback); |
27 | 25 |
28 // Gets previously created instance of PlatformSensor by sensor type |type|. | 26 // Gets previously created instance of PlatformSensor by sensor type |type|. |
29 scoped_refptr<PlatformSensor> GetSensor(mojom::SensorType type); | 27 scoped_refptr<PlatformSensor> GetSensor(mojom::SensorType type); |
30 | 28 |
31 // Shared buffer getters. | 29 // Shared buffer getters. |
32 mojo::ScopedSharedBufferHandle CloneSharedBufferHandle(); | 30 mojo::ScopedSharedBufferHandle CloneSharedBufferHandle(); |
33 | 31 |
| 32 // Gets shared buffer offset for the given sensor type. |
| 33 uint64_t GetSharedBufferOffset(mojom::SensorType type); |
| 34 |
34 protected: | 35 protected: |
35 PlatformSensorProviderBase(); | 36 PlatformSensorProviderBase(); |
36 virtual ~PlatformSensorProviderBase(); | 37 virtual ~PlatformSensorProviderBase(); |
37 | 38 |
38 // Method that must be implemented by platform specific classes. | 39 // Method that must be implemented by platform specific classes. |
39 virtual void CreateSensorInternal(mojom::SensorType type, | 40 virtual void CreateSensorInternal(mojom::SensorType type, |
40 mojo::ScopedSharedBufferMapping mapping, | 41 mojo::ScopedSharedBufferMapping mapping, |
41 uint64_t buffer_size, | |
42 const CreateSensorCallback& callback) = 0; | 42 const CreateSensorCallback& callback) = 0; |
43 | 43 |
44 private: | 44 private: |
45 friend class PlatformSensor; // To call RemoveSensor(); | 45 friend class PlatformSensor; // To call RemoveSensor(); |
46 | 46 |
47 bool CreateSharedBufferIfNeeded(); | 47 bool CreateSharedBufferIfNeeded(); |
48 void RemoveSensor(mojom::SensorType type); | 48 void RemoveSensor(mojom::SensorType type); |
49 void NotifySensorCreated(mojom::SensorType type, | 49 void NotifySensorCreated(mojom::SensorType type, |
50 scoped_refptr<PlatformSensor> sensor); | 50 scoped_refptr<PlatformSensor> sensor); |
51 | 51 |
52 private: | 52 private: |
53 using CallbackQueue = std::vector<CreateSensorCallback>; | 53 using CallbackQueue = std::vector<CreateSensorCallback>; |
54 | 54 |
55 std::map<mojom::SensorType, PlatformSensor*> sensor_map_; | 55 std::map<mojom::SensorType, PlatformSensor*> sensor_map_; |
56 std::map<mojom::SensorType, CallbackQueue> requests_map_; | 56 std::map<mojom::SensorType, CallbackQueue> requests_map_; |
57 mojo::ScopedSharedBufferHandle shared_buffer_handle_; | 57 mojo::ScopedSharedBufferHandle shared_buffer_handle_; |
58 | 58 |
59 DISALLOW_COPY_AND_ASSIGN(PlatformSensorProviderBase); | 59 DISALLOW_COPY_AND_ASSIGN(PlatformSensorProviderBase); |
60 }; | 60 }; |
61 | 61 |
62 } // namespace device | 62 } // namespace device |
63 | 63 |
64 #endif // DEVICE_GENERIC_SENSOR_PLATFORM_SENSOR_PROVIDER_BASE_H_ | 64 #endif // DEVICE_GENERIC_SENSOR_PLATFORM_SENSOR_PROVIDER_BASE_H_ |
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