| // Copyright 2016 The Chromium Authors. All rights reserved. |
| // Use of this source code is governed by a BSD-style license that can be |
| // found in the LICENSE file. |
| |
| #ifndef DEVICE_GENERIC_SENSOR_PLATFORM_SENSOR_H_ |
| #define DEVICE_GENERIC_SENSOR_PLATFORM_SENSOR_H_ |
| |
| #include <list> |
| #include <map> |
| |
| #include "base/macros.h" |
| #include "base/memory/ref_counted.h" |
| #include "base/memory/weak_ptr.h" |
| #include "base/observer_list.h" |
| #include "device/generic_sensor/public/interfaces/sensor.mojom.h" |
| #include "mojo/public/cpp/system/buffer.h" |
| |
| namespace device { |
| |
| class PlatformSensorProvider; |
| class PlatformSensorConfiguration; |
| |
| // Base class for the sensors provided by the platform. Concrete instances of |
| // this class are created by platform specific PlatformSensorProvider. |
| class PlatformSensor : public base::RefCountedThreadSafe<PlatformSensor> { |
| public: |
| // The interface that must be implemented by PlatformSensor clients. |
| class Client { |
| public: |
| virtual void OnSensorReadingChanged() = 0; |
| virtual void OnSensorError() = 0; |
| virtual bool IsNotificationSuspended() = 0; |
| |
| protected: |
| virtual ~Client() {} |
| }; |
| |
| virtual mojom::ReportingMode GetReportingMode() = 0; |
| virtual PlatformSensorConfiguration GetDefaultConfiguration() = 0; |
| |
| mojom::SensorType GetType() const; |
| |
| bool StartListening(Client* client, |
| const PlatformSensorConfiguration& config); |
| bool StopListening(Client* client, const PlatformSensorConfiguration& config); |
| |
| void UpdateSensor(); |
| |
| void AddClient(Client*); |
| void RemoveClient(Client*); |
| |
| protected: |
| virtual ~PlatformSensor(); |
| PlatformSensor(mojom::SensorType type, |
| mojo::ScopedSharedBufferMapping mapping, |
| PlatformSensorProvider* provider); |
| |
| using ConfigMap = std::map<Client*, std::list<PlatformSensorConfiguration>>; |
| |
| virtual bool UpdateSensorInternal(const ConfigMap& configurations); |
| virtual bool StartSensor( |
| const PlatformSensorConfiguration& configuration) = 0; |
| virtual void StopSensor() = 0; |
| virtual bool CheckSensorConfiguration( |
| const PlatformSensorConfiguration& configuration) = 0; |
| |
| void NotifySensorReadingChanged(); |
| void NotifySensorError(); |
| |
| mojo::ScopedSharedBufferMapping shared_buffer_mapping_; |
| |
| private: |
| friend class base::RefCountedThreadSafe<PlatformSensor>; |
| |
| mojom::SensorType type_; |
| base::ObserverList<Client, true> clients_; |
| ConfigMap config_map_; |
| PlatformSensorProvider* provider_; |
| base::WeakPtrFactory<PlatformSensor> weak_factory_; |
| DISALLOW_COPY_AND_ASSIGN(PlatformSensor); |
| }; |
| |
| } // namespace device |
| |
| #endif // DEVICE_GENERIC_SENSOR_PLATFORM_SENSOR_H_ |