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| 1 // Copyright 2017 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_PLATFORM_SENSOR_FUSION_RELATIVE_ORIENTATION_H_ |
| 6 #define DEVICE_GENERIC_SENSOR_PLATFORM_SENSOR_FUSION_RELATIVE_ORIENTATION_H_ |
| 7 |
| 8 #include <memory> |
| 9 |
| 10 #include "base/macros.h" |
| 11 #include "base/timer/timer.h" |
| 12 #include "device/generic_sensor/platform_sensor.h" |
| 13 #include "device/generic_sensor/platform_sensor_provider_base.h" |
| 14 |
| 15 namespace device { |
| 16 |
| 17 class RelativeOrientationFusionAlgorithm; |
| 18 class SensorSharedBufferReader; |
| 19 |
| 20 // Implementation of relative orientation PlatformSensor using fusion. |
| 21 // This is a single instance object per browser process which is created by |
| 22 // The singleton PlatformSensorProvider. If there are no clients, this instance |
| 23 // is not created. |
| 24 class PlatformSensorFusionRelativeOrientation : public PlatformSensor, |
| 25 public PlatformSensor::Client { |
| 26 public: |
| 27 // Construct a platform fusion sensor of type RELATIVE_ORIENTATION, given a |
| 28 // buffer |mapping| where readings will be written. |
| 29 PlatformSensorFusionRelativeOrientation( |
| 30 mojo::ScopedSharedBufferMapping mapping, |
| 31 PlatformSensorProvider* provider, |
| 32 const PlatformSensorProviderBase::CreateSensorCallback& callback); |
| 33 |
| 34 // PlatformSensor: |
| 35 mojom::ReportingMode GetReportingMode() override; |
| 36 PlatformSensorConfiguration GetDefaultConfiguration() override; |
| 37 // Can only be called once, the first time or after a StopSensor call. |
| 38 bool StartSensor(const PlatformSensorConfiguration& configuration) override; |
| 39 void StopSensor() override; |
| 40 |
| 41 // PlatformSensor::Client: |
| 42 void OnSensorReadingChanged() override; |
| 43 void OnSensorError() override; |
| 44 bool IsNotificationSuspended() override; |
| 45 |
| 46 protected: |
| 47 ~PlatformSensorFusionRelativeOrientation() override; |
| 48 |
| 49 // PlatformSensor: |
| 50 bool CheckSensorConfiguration( |
| 51 const PlatformSensorConfiguration& configuration) override; |
| 52 |
| 53 private: |
| 54 void CreateAccelerometerCallback(scoped_refptr<PlatformSensor> accelerometer); |
| 55 |
| 56 PlatformSensorProviderBase::CreateSensorCallback callback_; |
| 57 SensorReading reading_; |
| 58 scoped_refptr<PlatformSensor> accelerometer_; |
| 59 std::unique_ptr<SensorSharedBufferReader> accelerometer_reader_; |
| 60 std::unique_ptr<RelativeOrientationFusionAlgorithm> fusion_algorithm_; |
| 61 |
| 62 DISALLOW_COPY_AND_ASSIGN(PlatformSensorFusionRelativeOrientation); |
| 63 }; |
| 64 |
| 65 } // namespace device |
| 66 |
| 67 #endif // DEVICE_GENERIC_SENSOR_PLATFORM_SENSOR_FUSION_RELATIVE_ORIENTATION_H_ |
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