Index: device/generic_sensor/platform_sensor_relative_orientation_using_accelerometer.h |
diff --git a/device/generic_sensor/platform_sensor_relative_orientation_using_accelerometer.h b/device/generic_sensor/platform_sensor_relative_orientation_using_accelerometer.h |
new file mode 100644 |
index 0000000000000000000000000000000000000000..6ff3b638cb94e04955f5cf9b062c4996356cc89c |
--- /dev/null |
+++ b/device/generic_sensor/platform_sensor_relative_orientation_using_accelerometer.h |
@@ -0,0 +1,57 @@ |
+// Copyright 2017 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_RELATIVE_ORIENTATION_USING_ACCELEROMETER_H_ |
+#define DEVICE_GENERIC_SENSOR_PLATFORM_SENSOR_RELATIVE_ORIENTATION_USING_ACCELEROMETER_H_ |
+ |
+#include <memory> |
+ |
+#include "base/macros.h" |
+#include "base/timer/timer.h" |
+#include "device/generic_sensor/platform_sensor.h" |
+ |
+namespace device { |
+ |
+class SensorSharedBufferReader; |
+ |
+// Implementation of relative orientation PlatformSensor using accelerometer. |
+// This is a single instance object per browser process which is created by |
+// The singleton PlatformSensorProvider. If there are no clients, this instance |
+// is not created. |
+class PlatformSensorRelativeOrientationUsingAccelerometer |
+ : public PlatformSensor { |
+ public: |
+ // Construct a platform sensor of type RELATIVE_ORIENTATION, given a buffer |
+ // |mapping| where readings will be written. |
+ PlatformSensorRelativeOrientationUsingAccelerometer( |
+ mojo::ScopedSharedBufferMapping mapping, |
+ PlatformSensorProvider* provider); |
+ |
+ mojom::ReportingMode GetReportingMode() override; |
+ PlatformSensorConfiguration GetDefaultConfiguration() override; |
+ // Can only be called once, the first time or after a StopSensor call. |
+ bool StartSensor(const PlatformSensorConfiguration& configuration) override; |
+ void StopSensor() override; |
+ |
+ protected: |
+ ~PlatformSensorRelativeOrientationUsingAccelerometer() override; |
+ bool CheckSensorConfiguration( |
+ const PlatformSensorConfiguration& configuration) override; |
+ |
+ private: |
+ void CreateAccelerometerCallback(scoped_refptr<PlatformSensor> accelerometer); |
+ void PollForData(); |
+ |
+ SensorReading reading_; |
+ // Repeating timer for data polling. |
+ base::RepeatingTimer timer_; |
+ scoped_refptr<PlatformSensor> accelerometer_; |
+ std::unique_ptr<SensorSharedBufferReader> accelerometer_reader_; |
+ |
+ DISALLOW_COPY_AND_ASSIGN(PlatformSensorRelativeOrientationUsingAccelerometer); |
+}; |
+ |
+} // namespace device |
+ |
+#endif // DEVICE_GENERIC_SENSOR_PLATFORM_SENSOR_RELATIVE_ORIENTATION_USING_ACCELEROMETER_H_ |