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1 // Copyright 2015 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 "content/browser/device_sensors/data_fetcher_shared_memory.h" | |
6 | |
7 #include "content/browser/device_sensors/sensor_manager_chromeos.h" | |
8 | |
9 namespace content { | |
10 | |
11 DataFetcherSharedMemory::DataFetcherSharedMemory() { | |
12 } | |
13 | |
14 DataFetcherSharedMemory::~DataFetcherSharedMemory() { | |
15 } | |
16 | |
17 bool DataFetcherSharedMemory::Start(ConsumerType consumer_type, void* buffer) { | |
18 DCHECK(buffer); | |
19 if (!sensor_manager_) | |
20 sensor_manager_.reset(new SensorManagerChromeOS); | |
21 | |
22 switch (consumer_type) { | |
23 case CONSUMER_TYPE_MOTION: | |
24 sensor_manager_->StartFetchingDeviceMotionData( | |
25 static_cast<DeviceMotionHardwareBuffer*>(buffer)); | |
26 return true; | |
27 case CONSUMER_TYPE_ORIENTATION: | |
28 sensor_manager_->StartFetchingDeviceOrientationData( | |
29 static_cast<DeviceOrientationHardwareBuffer*>(buffer)); | |
30 return true; | |
31 case CONSUMER_TYPE_ORIENTATION_ABSOLUTE: { | |
32 orientation_absolute_buffer_ = | |
33 static_cast<DeviceOrientationHardwareBuffer*>(buffer); | |
34 // Absolute device orientation not available on Chrome OS, let the | |
35 // implementation fire an all-null event to signal this to blink. | |
36 orientation_absolute_buffer_->seqlock.WriteBegin(); | |
37 orientation_absolute_buffer_->data.absolute = true; | |
38 orientation_absolute_buffer_->data.allAvailableSensorsAreActive = true; | |
39 orientation_absolute_buffer_->seqlock.WriteEnd(); | |
40 return false; | |
41 } | |
42 case CONSUMER_TYPE_LIGHT: | |
43 NOTIMPLEMENTED(); | |
44 return false; | |
45 } | |
46 NOTREACHED(); | |
47 return false; | |
48 } | |
49 | |
50 bool DataFetcherSharedMemory::Stop(ConsumerType consumer_type) { | |
51 switch (consumer_type) { | |
52 case CONSUMER_TYPE_MOTION: | |
53 return sensor_manager_->StopFetchingDeviceMotionData(); | |
54 case CONSUMER_TYPE_ORIENTATION: | |
55 return sensor_manager_->StopFetchingDeviceOrientationData(); | |
56 case CONSUMER_TYPE_ORIENTATION_ABSOLUTE: | |
57 if (orientation_absolute_buffer_) { | |
58 orientation_absolute_buffer_->seqlock.WriteBegin(); | |
59 orientation_absolute_buffer_->data.allAvailableSensorsAreActive = false; | |
60 orientation_absolute_buffer_->seqlock.WriteEnd(); | |
61 orientation_absolute_buffer_ = nullptr; | |
62 } | |
63 return true; | |
64 case CONSUMER_TYPE_LIGHT: | |
65 NOTIMPLEMENTED(); | |
66 return false; | |
67 } | |
68 NOTREACHED(); | |
69 return false; | |
70 } | |
71 | |
72 } // namespace content | |
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