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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 #include "device/generic_sensor/platform_sensor_provider_win.h" | |
6 | |
7 #include "base/memory/singleton.h" | |
8 #include "base/task_runner_util.h" | |
9 #include "base/threading/thread.h" | |
10 #include "base/win/windows_version.h" | |
11 #include "device/generic_sensor/platform_sensor_win.h" | |
12 | |
13 namespace device { | |
14 | |
15 // static | |
16 PlatformSensorProvider* PlatformSensorProvider::GetInstance() { | |
17 return PlatformSensorProviderWin::GetInstance(); | |
18 } | |
19 | |
20 // static | |
21 PlatformSensorProviderWin* PlatformSensorProviderWin::GetInstance() { | |
22 if (base::win::GetVersion() < base::win::VERSION_WIN7) | |
23 return nullptr; | |
Mikhail
2016/10/26 06:40:15
maybe logging here?
shalamov
2016/10/26 12:09:43
Done.
| |
24 return base::Singleton< | |
25 PlatformSensorProviderWin, | |
26 base::LeakySingletonTraits<PlatformSensorProviderWin>>::get(); | |
27 } | |
28 | |
29 void PlatformSensorProviderWin::SetSensorManagerForTesing( | |
30 base::win::ScopedComPtr<ISensorManager> sensor_manager) { | |
31 m_sensor_manager_ = sensor_manager; | |
32 } | |
33 | |
34 PlatformSensorProviderWin::PlatformSensorProviderWin() = default; | |
35 PlatformSensorProviderWin::~PlatformSensorProviderWin() = default; | |
36 | |
37 void PlatformSensorProviderWin::CreateSensorInternal( | |
38 mojom::SensorType type, | |
39 mojo::ScopedSharedBufferMapping mapping, | |
40 const CreateSensorCallback& callback) { | |
41 DCHECK(CalledOnValidThread()); | |
42 if (!StartSensorThread()) { | |
43 callback.Run(nullptr); | |
44 return; | |
45 } | |
46 | |
47 base::PostTaskAndReplyWithResult( | |
48 sensor_thread_->task_runner().get(), FROM_HERE, | |
49 base::Bind(&PlatformSensorProviderWin::CreateSensorReader, | |
50 base::Unretained(this), type), | |
51 base::Bind(&PlatformSensorProviderWin::SensorReaderCreated, | |
52 base::Unretained(this), type, base::Passed(&mapping), | |
53 callback)); | |
54 } | |
55 | |
56 bool PlatformSensorProviderWin::InitializeSensorManager() { | |
57 if (m_sensor_manager_) | |
58 return true; | |
59 | |
60 HRESULT hr = m_sensor_manager_.CreateInstance(CLSID_SensorManager); | |
61 if (FAILED(hr) || !m_sensor_manager_) | |
Mikhail
2016/10/26 06:40:15
return (!FAILED(hr) && m_sensor_manager_);
shalamov
2016/10/26 12:09:43
Done.
| |
62 return false; | |
63 | |
64 return true; | |
65 } | |
66 | |
67 void PlatformSensorProviderWin::AllSensorsRemoved() { | |
68 m_sensor_manager_.Release(); | |
69 StopSensorThread(); | |
70 } | |
71 | |
72 bool PlatformSensorProviderWin::StartSensorThread() { | |
73 if (!sensor_thread_) { | |
74 sensor_thread_.reset(new base::Thread("Windows platform sensor thread")); | |
75 sensor_thread_->init_com_with_mta(true); | |
76 } | |
77 | |
78 if (!sensor_thread_->IsRunning()) | |
79 return sensor_thread_->Start(); | |
80 return true; | |
81 } | |
82 | |
83 void PlatformSensorProviderWin::StopSensorThread() { | |
84 if (sensor_thread_ && sensor_thread_->IsRunning()) | |
85 sensor_thread_->Stop(); | |
Mikhail
2016/10/26 06:40:15
sensor_thread_.reset() ?
shalamov
2016/10/26 12:09:43
Thread can be reused after Stop is called.
| |
86 } | |
87 | |
88 void PlatformSensorProviderWin::SensorReaderCreated( | |
89 mojom::SensorType type, | |
90 mojo::ScopedSharedBufferMapping mapping, | |
91 const CreateSensorCallback& callback, | |
92 std::unique_ptr<PlatformSensorReaderWin> sensor_reader) { | |
93 DCHECK(CalledOnValidThread()); | |
94 if (!sensor_reader) { | |
95 callback.Run(nullptr); | |
96 if (!HasSensors()) | |
97 StopSensorThread(); | |
98 return; | |
99 } | |
100 | |
101 scoped_refptr<PlatformSensor> sensor = new PlatformSensorWin( | |
102 type, std::move(mapping), this, sensor_thread_->task_runner(), | |
103 std::move(sensor_reader)); | |
104 callback.Run(sensor); | |
105 } | |
106 | |
107 std::unique_ptr<PlatformSensorReaderWin> | |
108 PlatformSensorProviderWin::CreateSensorReader(mojom::SensorType type) { | |
109 DCHECK(sensor_thread_->task_runner()->BelongsToCurrentThread()); | |
110 if (!InitializeSensorManager()) | |
111 return nullptr; | |
112 return PlatformSensorReaderWin::Create(type, m_sensor_manager_); | |
113 } | |
114 | |
115 } // namespace device | |
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