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1 // Copyright 2014 The Chromium Authors. All rights reserved. | 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 | 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 #ifndef CONTENT_RENDERER_DEVICE_SENSORS_DEVICE_MOTION_EVENT_PUMP_H_ | 5 #ifndef CONTENT_RENDERER_DEVICE_SENSORS_DEVICE_MOTION_EVENT_PUMP_H_ |
6 #define CONTENT_RENDERER_DEVICE_SENSORS_DEVICE_MOTION_EVENT_PUMP_H_ | 6 #define CONTENT_RENDERER_DEVICE_SENSORS_DEVICE_MOTION_EVENT_PUMP_H_ |
7 | 7 |
8 #include <memory> | 8 #include <memory> |
9 #include <utility> | |
10 #include <vector> | |
9 | 11 |
12 #include "base/bind.h" | |
13 #include "base/bind_helpers.h" | |
10 #include "base/macros.h" | 14 #include "base/macros.h" |
11 #include "content/renderer/device_sensors/device_sensor_event_pump.h" | 15 #include "base/time/time.h" |
12 #include "content/renderer/shared_memory_seqlock_reader.h" | 16 #include "base/timer/timer.h" |
13 #include "device/sensors/public/cpp/motion_data.h" | 17 #include "content/public/renderer/platform_event_observer.h" |
14 #include "device/sensors/public/interfaces/motion.mojom.h" | 18 #include "content/renderer/render_thread_impl.h" |
15 | 19 #include "device/generic_sensor/public/cpp/sensor_reading.h" |
16 namespace blink { | 20 #include "device/generic_sensor/public/interfaces/sensor.mojom.h" |
17 class WebDeviceMotionListener; | 21 #include "device/generic_sensor/public/interfaces/sensor_provider.mojom.h" |
18 } | 22 #include "mojo/public/cpp/bindings/binding.h" |
23 #include "third_party/WebKit/public/platform/modules/device_orientation/WebDevic eMotionData.h" | |
24 #include "third_party/WebKit/public/platform/modules/device_orientation/WebDevic eMotionListener.h" | |
19 | 25 |
20 namespace content { | 26 namespace content { |
21 | 27 |
22 typedef SharedMemorySeqLockReader<device::MotionData> | |
23 DeviceMotionSharedMemoryReader; | |
24 | |
25 class CONTENT_EXPORT DeviceMotionEventPump | 28 class CONTENT_EXPORT DeviceMotionEventPump |
26 : public DeviceSensorMojoClientMixin< | 29 : NON_EXPORTED_BASE( |
27 DeviceSensorEventPump<blink::WebDeviceMotionListener>, | 30 public PlatformEventObserver<blink::WebDeviceMotionListener>) { |
28 device::mojom::MotionSensor> { | |
29 public: | 31 public: |
30 explicit DeviceMotionEventPump(RenderThread* thread); | 32 explicit DeviceMotionEventPump(RenderThread* thread); |
31 ~DeviceMotionEventPump() override; | 33 ~DeviceMotionEventPump() override; |
32 | 34 |
33 // PlatformEventObserver. | 35 // PlatformEventObserver: |
36 void Start(blink::WebPlatformEventListener* listener) override; | |
37 void Stop() override; | |
38 void SendStartMessage() override; | |
39 void SendStopMessage() override; | |
34 void SendFakeDataForTesting(void* fake_data) override; | 40 void SendFakeDataForTesting(void* fake_data) override; |
35 | 41 |
36 protected: | 42 protected: |
Reilly Grant (use Gerrit)
2017/05/27 03:17:51
DeviceMotionEventPump has no subclasses so nothing
juncai
2017/05/30 22:26:57
The DeviceMotionEventPumpForTesting is a subclass
| |
37 void FireEvent() override; | 43 // Default rate for firing events. |
38 bool InitializeReader(base::SharedMemoryHandle handle) override; | 44 static constexpr int kDefaultPumpFrequencyHz = 60; |
45 static constexpr int kDefaultPumpDelayMicroseconds = | |
46 base::Time::kMicrosecondsPerSecond / kDefaultPumpFrequencyHz; | |
39 | 47 |
40 std::unique_ptr<DeviceMotionSharedMemoryReader> reader_; | 48 struct CONTENT_EXPORT SensorEntry : public device::mojom::SensorClient { |
49 SensorEntry(DeviceMotionEventPump* pump, | |
50 device::mojom::SensorType sensor_type); | |
51 ~SensorEntry() override; | |
52 | |
53 // device::mojom::SensorClient: | |
54 void RaiseError() override; | |
55 void SensorReadingChanged() override; | |
56 | |
57 // Mojo callback for SensorProvider::GetSensor(). | |
58 void OnSensorCreated(device::mojom::SensorInitParamsPtr params, | |
59 device::mojom::SensorClientRequest client_request); | |
60 | |
61 // Mojo callback for Sensor::AddConfiguration(). | |
62 void OnSensorAddConfiguration(bool success); | |
63 | |
64 void HandleSensorError(); | |
65 | |
66 bool SensorReadingCouldBeRead(); | |
67 | |
68 DeviceMotionEventPump* event_pump; | |
69 device::mojom::SensorPtr sensor; | |
70 device::mojom::SensorType type; | |
71 device::mojom::ReportingMode mode; | |
72 device::PlatformSensorConfiguration default_config; | |
73 mojo::ScopedSharedBufferHandle shared_buffer_handle; | |
74 mojo::ScopedSharedBufferMapping shared_buffer; | |
75 device::SensorReading reading; | |
76 std::pair<double, double> frequency_limits; | |
77 mojo::Binding<device::mojom::SensorClient> client_binding; | |
78 }; | |
79 | |
80 friend struct SensorEntry; | |
81 | |
82 virtual void FireEvent(); | |
83 | |
84 void DidStart(); | |
85 | |
86 SensorEntry accelerometer_sensor_; | |
Reilly Grant (use Gerrit)
2017/05/27 03:17:51
accelerometer_
juncai
2017/05/30 22:26:57
Done.
| |
87 SensorEntry linear_acceleration_sensor_; | |
88 SensorEntry gyroscope_sensor_; | |
Reilly Grant (use Gerrit)
2017/05/27 03:17:51
gyroscope_
juncai
2017/05/30 22:26:57
Done.
| |
89 int pump_delay_microseconds_; | |
90 | |
91 private: | |
92 // The pump is a tri-state automaton with allowed transitions as follows: | |
93 // STOPPED -> PENDING_START | |
94 // PENDING_START -> RUNNING | |
95 // PENDING_START -> STOPPED | |
96 // RUNNING -> STOPPED | |
97 enum class PumpState { STOPPED, RUNNING, PENDING_START }; | |
98 | |
99 bool CanStart() const; | |
100 void GetDataFromSharedMemory(blink::WebDeviceMotionData* data); | |
101 void GetSensor(SensorEntry* sensor_entry); | |
102 void HandleSensorProviderError(); | |
103 | |
104 mojo::InterfacePtr<device::mojom::SensorProvider> sensor_provider_; | |
105 // The number of sensors that are tried by calling | |
106 // SensorProvider::GetSensor() and Sensor::AddConfiguration(). | |
107 int num_sensors_tried_; | |
108 PumpState state_; | |
109 base::RepeatingTimer timer_; | |
41 | 110 |
42 DISALLOW_COPY_AND_ASSIGN(DeviceMotionEventPump); | 111 DISALLOW_COPY_AND_ASSIGN(DeviceMotionEventPump); |
43 }; | 112 }; |
44 | 113 |
45 } // namespace content | 114 } // namespace content |
46 | 115 |
47 #endif // CONTENT_RENDERER_DEVICE_SENSORS_DEVICE_MOTION_EVENT_PUMP_H_ | 116 #endif // CONTENT_RENDERER_DEVICE_SENSORS_DEVICE_MOTION_EVENT_PUMP_H_ |
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