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1 // Copyright 2014 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_ANDROID_H_ | |
6 #define CONTENT_BROWSER_DEVICE_SENSORS_SENSOR_MANAGER_ANDROID_H_ | |
7 | |
8 #include "base/android/scoped_java_ref.h" | |
9 #include "base/memory/scoped_ptr.h" | |
10 #include "base/synchronization/lock.h" | |
11 #include "content/common/content_export.h" | |
12 #include "content/common/device_sensors/device_light_hardware_buffer.h" | |
13 #include "content/common/device_sensors/device_motion_hardware_buffer.h" | |
14 #include "content/common/device_sensors/device_orientation_hardware_buffer.h" | |
15 | |
16 template<typename T> struct DefaultSingletonTraits; | |
17 | |
18 namespace content { | |
19 | |
20 // Android implementation of Device {Motion|Orientation|Light} API. | |
21 // | |
22 // Android's SensorManager has a push API, so when Got*() methods are called | |
23 // by the system the browser process puts the received data into a shared | |
24 // memory buffer, which is read by the renderer processes. | |
25 class CONTENT_EXPORT SensorManagerAndroid { | |
26 public: | |
27 // Must be called at startup, before GetInstance(). | |
28 static bool Register(JNIEnv* env); | |
29 | |
30 // Needs to be thread-safe, because accessed from different threads. | |
31 static SensorManagerAndroid* GetInstance(); | |
32 | |
33 // Called from Java via JNI. | |
34 void GotLight(JNIEnv*, jobject, double value); | |
35 void GotOrientation(JNIEnv*, jobject, | |
36 double alpha, double beta, double gamma); | |
37 void GotAcceleration(JNIEnv*, jobject, | |
38 double x, double y, double z); | |
39 void GotAccelerationIncludingGravity(JNIEnv*, jobject, | |
40 double x, double y, double z); | |
41 void GotRotationRate(JNIEnv*, jobject, | |
42 double alpha, double beta, double gamma); | |
43 | |
44 // Shared memory related methods. | |
45 bool StartFetchingDeviceLightData(DeviceLightHardwareBuffer* buffer); | |
46 void StopFetchingDeviceLightData(); | |
47 | |
48 bool StartFetchingDeviceMotionData(DeviceMotionHardwareBuffer* buffer); | |
49 void StopFetchingDeviceMotionData(); | |
50 | |
51 bool StartFetchingDeviceOrientationData( | |
52 DeviceOrientationHardwareBuffer* buffer); | |
53 void StopFetchingDeviceOrientationData(); | |
54 | |
55 void Shutdown(); | |
56 | |
57 protected: | |
58 enum EventType { | |
59 // These constants should match DEVICE_ORIENTATION, DEVICE_MOTION and | |
60 // DEVICE_LIGHT constants in content/public/android/java/src/org/ | |
61 // chromium/content/browser/DeviceSensors.java | |
62 kTypeOrientation = 0, | |
63 kTypeMotion = 1, | |
64 kTypeLight = 2 | |
65 }; | |
66 | |
67 SensorManagerAndroid(); | |
68 virtual ~SensorManagerAndroid(); | |
69 | |
70 virtual bool Start(EventType event_type); | |
71 virtual void Stop(EventType event_type); | |
72 virtual int GetNumberActiveDeviceMotionSensors(); | |
73 | |
74 void StartFetchingLightDataOnUI(DeviceLightHardwareBuffer* buffer); | |
75 void StopFetchingLightDataOnUI(); | |
76 | |
77 void StartFetchingMotionDataOnUI(DeviceMotionHardwareBuffer* buffer); | |
78 void StopFetchingMotionDataOnUI(); | |
79 | |
80 void StartFetchingOrientationDataOnUI( | |
81 DeviceOrientationHardwareBuffer* buffer); | |
82 void StopFetchingOrientationDataOnUI(); | |
83 | |
84 private: | |
85 friend struct DefaultSingletonTraits<SensorManagerAndroid>; | |
86 | |
87 enum { | |
88 RECEIVED_MOTION_DATA_ACCELERATION = 0, | |
89 RECEIVED_MOTION_DATA_ACCELERATION_INCL_GRAVITY = 1, | |
90 RECEIVED_MOTION_DATA_ROTATION_RATE = 2, | |
91 RECEIVED_MOTION_DATA_MAX = 3, | |
92 }; | |
93 | |
94 void SetLightBufferValue(double lux); | |
95 | |
96 void CheckMotionBufferReadyToRead(); | |
97 void SetMotionBufferReadyStatus(bool ready); | |
98 void ClearInternalMotionBuffers(); | |
99 | |
100 void SetOrientationBufferReadyStatus(bool ready); | |
101 bool isUsingBackupSensorsForOrientation(); | |
102 | |
103 // The Java provider of sensors info. | |
104 base::android::ScopedJavaGlobalRef<jobject> device_sensors_; | |
105 int number_active_device_motion_sensors_; | |
106 int received_motion_data_[RECEIVED_MOTION_DATA_MAX]; | |
107 DeviceLightHardwareBuffer* device_light_buffer_; | |
108 DeviceMotionHardwareBuffer* device_motion_buffer_; | |
109 DeviceOrientationHardwareBuffer* device_orientation_buffer_; | |
110 bool is_light_buffer_ready_; | |
111 bool is_motion_buffer_ready_; | |
112 bool is_orientation_buffer_ready_; | |
113 | |
114 base::Lock light_buffer_lock_; | |
115 base::Lock motion_buffer_lock_; | |
116 base::Lock orientation_buffer_lock_; | |
117 | |
118 bool is_using_backup_sensors_for_orientation_; | |
119 bool is_shutdown_; | |
120 | |
121 DISALLOW_COPY_AND_ASSIGN(SensorManagerAndroid); | |
122 }; | |
123 | |
124 } // namespace content | |
125 | |
126 #endif // CONTENT_BROWSER_DEVICE_SENSORS_SENSOR_MANAGER_ANDROID_H_ | |
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