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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_PLATFORM_SENSOR_H_ | |
6 #define DEVICE_GENERIC_SENSOR_PLATFORM_SENSOR_H_ | |
7 | |
8 #include <list> | |
9 #include <map> | |
10 | |
11 #include "base/macros.h" | |
12 #include "base/memory/ref_counted.h" | |
13 #include "base/memory/weak_ptr.h" | |
14 #include "base/observer_list.h" | |
15 #include "device/generic_sensor/public/interfaces/sensor.mojom.h" | |
16 #include "mojo/public/cpp/system/buffer.h" | |
17 | |
18 namespace device { | |
19 | |
20 class PlatformSensorProvider; | |
21 class PlatformSensorConfiguration; | |
22 | |
23 // Base class for the sensors provided by the platform. Concrete instances of | |
24 // this class are created by platform specific PlatformSensorProvider. | |
25 class PlatformSensor : public base::RefCountedThreadSafe<PlatformSensor> { | |
26 public: | |
27 // The interface that must be implemented by PlatformSensor clients. | |
28 class Client { | |
29 public: | |
30 virtual void OnSensorReadingChanged() = 0; | |
31 virtual void OnSensorError() = 0; | |
32 virtual bool IsNotificationSuspended() = 0; | |
33 | |
34 protected: | |
35 virtual ~Client() {} | |
36 }; | |
37 | |
38 virtual mojom::ReportingMode GetReportingMode() = 0; | |
39 | |
40 mojom::SensorType GetType() const; | |
41 | |
42 bool StartListening(Client* client, | |
43 const PlatformSensorConfiguration& config); | |
44 bool StopListening(Client* client, const PlatformSensorConfiguration& config); | |
45 | |
46 void UpdateSensor(); | |
47 | |
48 void AddClient(Client*); | |
49 void RemoveClient(Client*); | |
50 | |
51 protected: | |
52 virtual ~PlatformSensor(); | |
53 PlatformSensor(mojom::SensorType type, | |
54 mojo::ScopedSharedBufferMapping mapping, | |
55 PlatformSensorProvider* provider); | |
56 | |
57 using ConfigMap = std::map<Client*, std::list<PlatformSensorConfiguration>>; | |
58 | |
59 virtual bool UpdateSensorInternal(const ConfigMap& configurations) = 0; | |
timvolodine
2016/08/19 16:02:30
is this platform dependent? would it make sense to
Mikhail
2016/08/19 19:10:02
I think now it happens like that already. Platform
timvolodine
2016/08/22 18:42:46
I was actually suggesting to try avoid PlatformSen
Mikhail
2016/08/22 19:07:50
These two classes have different roles and each is
timvolodine
2016/08/22 19:42:25
I was thinking letting the PlatformSensorProvider
| |
60 virtual bool CheckSensorConfiguration( | |
61 const PlatformSensorConfiguration& configuration) = 0; | |
62 | |
63 void NotifySensorReadingChanged(); | |
64 void NotifySensorError(); | |
65 | |
66 mojo::ScopedSharedBufferMapping shared_buffer_mapping_; | |
67 | |
68 private: | |
69 friend class base::RefCountedThreadSafe<PlatformSensor>; | |
70 | |
71 mojom::SensorType type_; | |
72 base::ObserverList<Client, true> clients_; | |
73 ConfigMap config_map_; | |
74 PlatformSensorProvider* provider_; | |
75 base::WeakPtrFactory<PlatformSensor> weak_factory_; | |
76 DISALLOW_COPY_AND_ASSIGN(PlatformSensor); | |
77 }; | |
78 | |
79 } // namespace device | |
80 | |
81 #endif // DEVICE_GENERIC_SENSOR_PLATFORM_SENSOR_H_ | |
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