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| 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 |
| 3 // found in the LICENSE file. |
| 4 |
| 5 #ifndef DEVICE_GENERIC_SENSOR_POLLING_PLATFORM_SENSOR_H_ |
| 6 #define DEVICE_GENERIC_SENSOR_POLLING_PLATFORM_SENSOR_H_ |
| 7 |
| 8 #include "device/generic_sensor/platform_sensor.h" |
| 9 |
| 10 #include "base/timer/timer.h" |
| 11 |
| 12 namespace base { |
| 13 class SingleThreadTaskRunner; |
| 14 } |
| 15 |
| 16 namespace device { |
| 17 |
| 18 class PollingPlatformSensor : public PlatformSensor { |
| 19 public: |
| 20 class Deleter { |
| 21 public: |
| 22 Deleter(); |
| 23 ~Deleter(); |
| 24 |
| 25 void operator()(base::RepeatingTimer* timer) const; |
| 26 |
| 27 void set_helper(scoped_refptr<base::SingleThreadTaskRunner> task_runner) { |
| 28 task_runner_ = task_runner; |
| 29 } |
| 30 |
| 31 private: |
| 32 void destroy_timer(base::RepeatingTimer* timer) const { delete (timer); } |
| 33 |
| 34 scoped_refptr<base::SingleThreadTaskRunner> task_runner_; |
| 35 }; |
| 36 |
| 37 PollingPlatformSensor( |
| 38 mojom::SensorType type, |
| 39 mojo::ScopedSharedBufferMapping mapping, |
| 40 PlatformSensorProvider* provider, |
| 41 scoped_refptr<base::SingleThreadTaskRunner> ui_task_runner); |
| 42 |
| 43 virtual void UpdateReading() = 0; |
| 44 |
| 45 protected: |
| 46 ~PollingPlatformSensor() override; |
| 47 bool StartSensor(const PlatformSensorConfiguration& configuration) override; |
| 48 void StopSensor() override; |
| 49 scoped_refptr<base::SingleThreadTaskRunner> polling_thread_task_runner_; |
| 50 |
| 51 private: |
| 52 void BeginPoll(const PlatformSensorConfiguration& configuration); |
| 53 void StopPoll(); |
| 54 void OnStop(); |
| 55 |
| 56 std::unique_ptr<base::RepeatingTimer, PollingPlatformSensor::Deleter> timer_; |
| 57 base::WeakPtrFactory<PollingPlatformSensor> weak_factory_; |
| 58 |
| 59 DISALLOW_COPY_AND_ASSIGN(PollingPlatformSensor); |
| 60 }; |
| 61 |
| 62 } // namespace device |
| 63 |
| 64 #endif // DEVICE_GENERIC_SENSOR_POLLING_PLATFORM_SENSOR_H_ |
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