OLD | NEW |
| (Empty) |
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 #ifndef CONTENT_BROWSER_DEVICE_SENSORS_SENSOR_MANAGER_CHROMEOS_H_ | |
6 #define CONTENT_BROWSER_DEVICE_SENSORS_SENSOR_MANAGER_CHROMEOS_H_ | |
7 | |
8 #include "base/macros.h" | |
9 #include "base/threading/thread_checker.h" | |
10 #include "chromeos/accelerometer/accelerometer_reader.h" | |
11 #include "chromeos/accelerometer/accelerometer_types.h" | |
12 #include "content/common/content_export.h" | |
13 #include "device/sensors/public/cpp/device_motion_hardware_buffer.h" | |
14 #include "device/sensors/public/cpp/device_orientation_hardware_buffer.h" | |
15 | |
16 namespace content { | |
17 | |
18 // Observes Chrome OS accelerometer sensors, and provides updated device | |
19 // orientation information. | |
20 class CONTENT_EXPORT SensorManagerChromeOS | |
21 : public chromeos::AccelerometerReader::Observer { | |
22 public: | |
23 SensorManagerChromeOS(); | |
24 ~SensorManagerChromeOS() override; | |
25 | |
26 // Begins monitoring of motion events, the shared memory of |buffer| will be | |
27 // updated upon subsequent events. | |
28 void StartFetchingDeviceMotionData(DeviceMotionHardwareBuffer* buffer); | |
29 | |
30 // Stops monitoring motion events. Returns true if there is an active | |
31 // |motion_buffer_| and fetching stops. Otherwise returns false. | |
32 bool StopFetchingDeviceMotionData(); | |
33 | |
34 // Begins monitoring of orientation events, the shared memory of |buffer| will | |
35 // be updated upon subsequent events. | |
36 void StartFetchingDeviceOrientationData( | |
37 DeviceOrientationHardwareBuffer* buffer); | |
38 | |
39 // Stops monitoring orientation events. Returns true if there is an active | |
40 // |orientation_buffer_| and fetching stops. Otherwise returns false. | |
41 bool StopFetchingDeviceOrientationData(); | |
42 | |
43 // chromeos::AccelerometerReader::Observer: | |
44 void OnAccelerometerUpdated( | |
45 scoped_refptr<const chromeos::AccelerometerUpdate> update) override; | |
46 | |
47 protected: | |
48 // Begins/ends the observation of accelerometer events. | |
49 virtual void StartObservingAccelerometer(); | |
50 virtual void StopObservingAccelerometer(); | |
51 | |
52 private: | |
53 // Updates |motion_buffer_| or |orientation_buffer_| accordingly. | |
54 void GenerateMotionEvent(double x, double y, double z); | |
55 void GenerateOrientationEvent(double x, double y, double z); | |
56 | |
57 // Shared memory to update. | |
58 DeviceMotionHardwareBuffer* motion_buffer_; | |
59 DeviceOrientationHardwareBuffer* orientation_buffer_; | |
60 | |
61 // Verify all work is done on the same thread. | |
62 base::ThreadChecker thread_checker_; | |
63 | |
64 DISALLOW_COPY_AND_ASSIGN(SensorManagerChromeOS); | |
65 }; | |
66 | |
67 } // namespace content | |
68 | |
69 #endif // CONTENT_BROWSER_DEVICE_SENSORS_SENSOR_MANAGER_CHROMEOS_H_ | |
OLD | NEW |