Index: device/generic_sensor/platform_sensor_reader_win.h |
diff --git a/device/generic_sensor/platform_sensor_reader_win.h b/device/generic_sensor/platform_sensor_reader_win.h |
new file mode 100644 |
index 0000000000000000000000000000000000000000..07dd63f37d8726fb32e8c5c0bb277645b94dd78c |
--- /dev/null |
+++ b/device/generic_sensor/platform_sensor_reader_win.h |
@@ -0,0 +1,81 @@ |
+// 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_READER_WIN_H_ |
+#define DEVICE_GENERIC_SENSOR_PLATFORM_SENSOR_READER_WIN_H_ |
+ |
+#include <SensorsApi.h> |
+ |
+#include "base/win/scoped_comptr.h" |
+#include "device/generic_sensor/public/interfaces/sensor.mojom.h" |
+ |
+namespace device { |
+ |
+class PlatformSensorConfiguration; |
+struct ReaderInitParams; |
+struct SensorReading; |
+ |
+// Generic class that uses ISensor interface to fetch sensor data. Used |
+// by PlatformSensorWin and delivers notifications via Client interface. |
+// Instances of this class must be created and destructed on the same thread. |
+class PlatformSensorReaderWin { |
+ public: |
+ // Client interface that can be used to receive notifications about sensor |
+ // error or data change events. |
+ class Client { |
+ public: |
+ virtual void OnReadingUpdated(const SensorReading& reading) = 0; |
+ virtual void OnSensorError() = 0; |
+ |
+ protected: |
+ virtual ~Client() {} |
+ }; |
+ |
+ static std::unique_ptr<PlatformSensorReaderWin> Create( |
+ mojom::SensorType type, |
+ base::win::ScopedComPtr<ISensorManager> sensor_manager); |
+ |
+ // Following methods are thread safe. |
+ void SetClient(Client* client); |
+ unsigned long GetMinimalReportingIntervalMs() const; |
+ mojom::ReportingMode GetReportingMode() const; |
+ bool StartSensor(const PlatformSensorConfiguration& configuration); |
+ void StopSensor(); |
+ |
+ // Must be destructed on the same thread that was used during construction. |
+ ~PlatformSensorReaderWin(); |
+ |
+ private: |
+ PlatformSensorReaderWin(base::win::ScopedComPtr<ISensor> sensor, |
+ std::unique_ptr<ReaderInitParams> params); |
+ |
+ static base::win::ScopedComPtr<ISensor> GetSensorForType( |
+ REFSENSOR_TYPE_ID sensor_type, |
+ base::win::ScopedComPtr<ISensorManager> sensor_manager); |
+ |
+ bool SetReportingInterval(const PlatformSensorConfiguration& configuration); |
+ HRESULT SensorReadingChanged(ISensorDataReport& report, |
+ SensorReading& reading) const; |
+ void SensorError(); |
+ |
+ private: |
+ friend class EventListener; |
+ |
+ const std::unique_ptr<ReaderInitParams> init_params_; |
+ scoped_refptr<base::SingleThreadTaskRunner> task_runner_; |
+ // Following class members are protected by lock, because SetClient, |
+ // StartSensor and StopSensor are called from another thread by |
+ // PlatformSensorWin that can modify internal state of the object. |
+ base::Lock lock_; |
+ bool sensor_active_; |
+ Client* client_; |
+ base::win::ScopedComPtr<ISensor> sensor_; |
+ scoped_refptr<EventListener> event_listener_; |
+ |
+ DISALLOW_COPY_AND_ASSIGN(PlatformSensorReaderWin); |
+}; |
+ |
+} // namespace device |
+ |
+#endif // DEVICE_GENERIC_SENSOR_PLATFORM_SENSOR_READER_WIN_H_ |