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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 #include "device/generic_sensor/platform_sensor_provider_base.h" | 5 #include "device/generic_sensor/platform_sensor_provider_base.h" |
6 | 6 |
7 #include <utility> | 7 #include <utility> |
8 | 8 |
9 #include "base/stl_util.h" | 9 #include "base/stl_util.h" |
10 #include "device/generic_sensor/public/interfaces/sensor_provider.mojom.h" | 10 #include "device/generic_sensor/public/interfaces/sensor_provider.mojom.h" |
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25 void PlatformSensorProviderBase::CreateSensor( | 25 void PlatformSensorProviderBase::CreateSensor( |
26 mojom::SensorType type, | 26 mojom::SensorType type, |
27 const CreateSensorCallback& callback) { | 27 const CreateSensorCallback& callback) { |
28 DCHECK(CalledOnValidThread()); | 28 DCHECK(CalledOnValidThread()); |
29 | 29 |
30 if (!CreateSharedBufferIfNeeded()) { | 30 if (!CreateSharedBufferIfNeeded()) { |
31 callback.Run(nullptr); | 31 callback.Run(nullptr); |
32 return; | 32 return; |
33 } | 33 } |
34 | 34 |
35 mojo::ScopedSharedBufferMapping mapping = shared_buffer_handle_->MapAtOffset( | 35 mojo::ScopedSharedBufferMapping mapping = GetScopedSharedBufferMapping(type); |
36 kReadingBufferSize, SensorReadingSharedBuffer::GetOffset(type)); | |
37 if (!mapping) { | 36 if (!mapping) { |
38 callback.Run(nullptr); | 37 callback.Run(nullptr); |
39 return; | 38 return; |
40 } | 39 } |
41 | 40 |
42 auto it = requests_map_.find(type); | 41 auto it = requests_map_.find(type); |
43 if (it != requests_map_.end()) { | 42 if (it != requests_map_.end()) { |
44 it->second.push_back(callback); | 43 it->second.push_back(callback); |
45 } else { // This is the first CreateSensor call. | 44 } else { // This is the first CreateSensor call. |
46 memset(mapping.get(), 0, kReadingBufferSize); | 45 memset(mapping.get(), 0, kReadingBufferSize); |
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71 | 70 |
72 shared_buffer_handle_ = | 71 shared_buffer_handle_ = |
73 mojo::SharedBufferHandle::Create(kSharedBufferSizeInBytes); | 72 mojo::SharedBufferHandle::Create(kSharedBufferSizeInBytes); |
74 return shared_buffer_handle_.is_valid(); | 73 return shared_buffer_handle_.is_valid(); |
75 } | 74 } |
76 | 75 |
77 void PlatformSensorProviderBase::RemoveSensor(mojom::SensorType type) { | 76 void PlatformSensorProviderBase::RemoveSensor(mojom::SensorType type) { |
78 DCHECK(CalledOnValidThread()); | 77 DCHECK(CalledOnValidThread()); |
79 DCHECK(ContainsKey(sensor_map_, type)); | 78 DCHECK(ContainsKey(sensor_map_, type)); |
80 sensor_map_.erase(type); | 79 sensor_map_.erase(type); |
80 SensorRemoved(type); | |
81 | 81 |
82 if (sensor_map_.empty()) { | 82 if (sensor_map_.empty()) { |
83 AllSensorsRemoved(); | 83 AllSensorsRemoved(); |
84 shared_buffer_handle_.reset(); | 84 shared_buffer_handle_.reset(); |
85 } | 85 } |
86 } | 86 } |
87 | 87 |
88 mojo::ScopedSharedBufferHandle | 88 mojo::ScopedSharedBufferHandle |
89 PlatformSensorProviderBase::CloneSharedBufferHandle() { | 89 PlatformSensorProviderBase::CloneSharedBufferHandle() { |
90 DCHECK(CalledOnValidThread()); | 90 DCHECK(CalledOnValidThread()); |
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110 | 110 |
111 // Inform subscribers about the sensor. | 111 // Inform subscribers about the sensor. |
112 // |sensor| can be nullptr here. | 112 // |sensor| can be nullptr here. |
113 auto it = requests_map_.find(type); | 113 auto it = requests_map_.find(type); |
114 for (auto& callback : it->second) | 114 for (auto& callback : it->second) |
115 callback.Run(sensor); | 115 callback.Run(sensor); |
116 | 116 |
117 requests_map_.erase(type); | 117 requests_map_.erase(type); |
118 } | 118 } |
119 | 119 |
120 std::vector<mojom::SensorType> | |
121 PlatformSensorProviderBase::GetPendingRequestTypes() { | |
122 std::vector<mojom::SensorType> request_types; | |
123 for (auto const& entry : requests_map_) | |
124 request_types.push_back(entry.first); | |
125 return request_types; | |
126 } | |
127 | |
128 mojo::ScopedSharedBufferMapping | |
129 PlatformSensorProviderBase::GetScopedSharedBufferMapping( | |
Mikhail
2016/12/09 08:15:56
pls rename it to 'MapSharedBufferForType()'
maksims (do not use this acc)
2016/12/09 10:22:42
Done.
| |
130 mojom::SensorType type) { | |
131 mojo::ScopedSharedBufferMapping mapping = shared_buffer_handle_->MapAtOffset( | |
132 kReadingBufferSize, SensorReadingSharedBuffer::GetOffset(type)); | |
Mikhail
2016/12/09 08:15:56
memset(mapping.get(), 0, kReadingBufferSize);
maksims (do not use this acc)
2016/12/09 10:22:42
Done.
| |
133 return mapping; | |
134 } | |
135 | |
120 } // namespace device | 136 } // namespace device |
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