Move //device/sensor impl to be part of the internal implemenation of the Device Service.

device/sensors/sensor_manager_android.h

-// Copyright 2014 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_SENSORS_SENSOR_MANAGER_ANDROID_H_
-#define DEVICE_SENSORS_SENSOR_MANAGER_ANDROID_H_
-
-#include <memory>
-
-#include "base/android/scoped_java_ref.h"
-#include "base/macros.h"
-#include "base/synchronization/lock.h"
-#include "base/threading/thread_checker.h"
-#include "device/sensors/device_sensor_export.h"
-#include "device/sensors/device_sensors_consts.h"
-#include "device/sensors/public/cpp/device_light_hardware_buffer.h"
-#include "device/sensors/public/cpp/device_motion_hardware_buffer.h"
-#include "device/sensors/public/cpp/device_orientation_hardware_buffer.h"
-
-namespace base {
-template <typename T>
-struct DefaultSingletonTraits;
-}
-
-namespace device {
-
-// Android implementation of Device {Motion|Orientation|Light} API.
-//
-// Android's SensorManager has a push API, so when Got*() methods are called
-// by the system the browser process puts the received data into a shared
-// memory buffer, which is read by the renderer processes.
-class DEVICE_SENSOR_EXPORT SensorManagerAndroid {
- public:
-  // Must be called at startup, before GetInstance().
-  static bool Register(JNIEnv* env);
-
-  // Should be called only on the UI thread.
-  static SensorManagerAndroid* GetInstance();
-
-  // Called from Java via JNI.
-  void GotLight(JNIEnv*,
-                const base::android::JavaParamRef<jobject>&,
-                double value);
-  void GotOrientation(JNIEnv*,
-                      const base::android::JavaParamRef<jobject>&,
-                      double alpha,
-                      double beta,
-                      double gamma);
-  void GotOrientationAbsolute(JNIEnv*,
-                              const base::android::JavaParamRef<jobject>&,
-                              double alpha,
-                              double beta,
-                              double gamma);
-  void GotAcceleration(JNIEnv*,
-                       const base::android::JavaParamRef<jobject>&,
-                       double x,
-                       double y,
-                       double z);
-  void GotAccelerationIncludingGravity(
-      JNIEnv*,
-      const base::android::JavaParamRef<jobject>&,
-      double x,
-      double y,
-      double z);
-  void GotRotationRate(JNIEnv*,
-                       const base::android::JavaParamRef<jobject>&,
-                       double alpha,
-                       double beta,
-                       double gamma);
-
-  // Shared memory related methods.
-  void StartFetchingDeviceLightData(DeviceLightHardwareBuffer* buffer);
-  void StopFetchingDeviceLightData();
-
-  void StartFetchingDeviceMotionData(DeviceMotionHardwareBuffer* buffer);
-  void StopFetchingDeviceMotionData();
-
-  void StartFetchingDeviceOrientationData(
-      DeviceOrientationHardwareBuffer* buffer);
-  void StopFetchingDeviceOrientationData();
-
-  void StartFetchingDeviceOrientationAbsoluteData(
-      DeviceOrientationHardwareBuffer* buffer);
-  void StopFetchingDeviceOrientationAbsoluteData();
-
-  void Shutdown();
-
-  // A Java counterpart will be generated for this enum.
-  // GENERATED_JAVA_ENUM_PACKAGE: org.chromium.device.sensors
-  // When adding new constants don't modify the order as they are used for UMA.
-  enum OrientationSensorType {
-    NOT_AVAILABLE = 0,
-    ROTATION_VECTOR = 1,
-    ACCELEROMETER_MAGNETIC = 2,
-    GAME_ROTATION_VECTOR = 3,
-    ORIENTATION_SENSOR_MAX = 4,
-  };
-
- protected:
-  SensorManagerAndroid();
-  virtual ~SensorManagerAndroid();
-
-  // Starts listening to the sensors corresponding to the consumer_type.
-  // Returns true if the registration with sensors was successful.
-  virtual bool Start(ConsumerType consumer_type);
-  // Stops listening to the sensors corresponding to the consumer_type.
-  virtual void Stop(ConsumerType consumer_type);
-  // Returns currently used sensor type for device orientation.
-  virtual OrientationSensorType GetOrientationSensorTypeUsed();
-  // Returns the number of active sensors corresponding to
-  // ConsumerType.DEVICE_MOTION.
-  virtual int GetNumberActiveDeviceMotionSensors();
-
- private:
-  friend struct base::DefaultSingletonTraits<SensorManagerAndroid>;
-
-  enum {
-    RECEIVED_MOTION_DATA_ACCELERATION = 0,
-    RECEIVED_MOTION_DATA_ACCELERATION_INCL_GRAVITY = 1,
-    RECEIVED_MOTION_DATA_ROTATION_RATE = 2,
-    RECEIVED_MOTION_DATA_MAX = 3,
-  };
-
-  void SetLightBufferValue(double lux);
-
-  void CheckMotionBufferReadyToRead();
-  void SetMotionBufferReadyStatus(bool ready);
-  void ClearInternalMotionBuffers();
-
-  // The Java provider of sensors info.
-  base::android::ScopedJavaGlobalRef<jobject> device_sensors_;
-  int number_active_device_motion_sensors_;
-  int received_motion_data_[RECEIVED_MOTION_DATA_MAX];
-
-  // Cached pointers to buffers, owned by DataFetcherSharedMemoryBase.
-  DeviceLightHardwareBuffer* device_light_buffer_;
-  DeviceMotionHardwareBuffer* device_motion_buffer_;
-  DeviceOrientationHardwareBuffer* device_orientation_buffer_;
-  DeviceOrientationHardwareBuffer* device_orientation_absolute_buffer_;
-
-  bool motion_buffer_initialized_;
-  bool orientation_buffer_initialized_;
-  bool orientation_absolute_buffer_initialized_;
-
-  base::Lock light_buffer_lock_;
-  base::Lock motion_buffer_lock_;
-  base::Lock orientation_buffer_lock_;
-  base::Lock orientation_absolute_buffer_lock_;
-
-  bool is_shutdown_;
-  base::ThreadChecker thread_checker_;
-
-  DISALLOW_COPY_AND_ASSIGN(SensorManagerAndroid);
-};
-
-}  // namespace device
-
-#endif  // DEVICE_SENSORS_SENSOR_MANAGER_ANDROID_H_