Android: rename DataFetcherImplAndroid -> SensorManagerAndroid.

content/browser/device_orientation/data_fetcher_impl_android.h

-// Copyright (c) 2012 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 CHROME_BROWSER_DEVICE_ORIENTATION_DATA_FETCHER_IMPL_ANDROID_H_
-#define CHROME_BROWSER_DEVICE_ORIENTATION_DATA_FETCHER_IMPL_ANDROID_H_
-
-#include "base/android/scoped_java_ref.h"
-#include "base/memory/scoped_ptr.h"
-#include "base/synchronization/lock.h"
-#include "content/common/content_export.h"
-#include "content/common/device_orientation/device_motion_hardware_buffer.h"
-#include "content/common/device_orientation/device_orientation_hardware_buffer.h"
-
-template<typename T> struct DefaultSingletonTraits;
-
-namespace content {
-
-// Android implementation of Device Orientation 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.
-//
-
-// TODO(timvolodine): rename this class to SensorManagerAndroid.
-class CONTENT_EXPORT DataFetcherImplAndroid {
- public:
-  // Must be called at startup, before GetInstance().
-  static bool Register(JNIEnv* env);
-
-  // Needs to be thread-safe, because accessed from different threads.
-  static DataFetcherImplAndroid* GetInstance();
-
-  // Called from Java via JNI.
-  void GotOrientation(JNIEnv*, jobject,
-                      double alpha, double beta, double gamma);
-  void GotAcceleration(JNIEnv*, jobject,
-                       double x, double y, double z);
-  void GotAccelerationIncludingGravity(JNIEnv*, jobject,
-                                       double x, double y, double z);
-  void GotRotationRate(JNIEnv*, jobject,
-                       double alpha, double beta, double gamma);
-
-  // Shared memory related methods.
-  bool StartFetchingDeviceMotionData(DeviceMotionHardwareBuffer* buffer);
-  void StopFetchingDeviceMotionData();
-
-  bool StartFetchingDeviceOrientationData(
-      DeviceOrientationHardwareBuffer* buffer);
-  void StopFetchingDeviceOrientationData();
-
- protected:
-  enum EventType {
-    // These constants should match DEVICE_ORIENTATION and DEVICE_MOTION
-    // constants in content/public/android/java/src/org/chromium/content/
-    // browser/DeviceMotionAndOrientation.java
-    kTypeOrientation = 0,
-    kTypeMotion = 1
-  };
-
-  DataFetcherImplAndroid();
-  virtual ~DataFetcherImplAndroid();
-
-  virtual bool Start(EventType event_type);
-  virtual void Stop(EventType event_type);
-  virtual int GetNumberActiveDeviceMotionSensors();
-
- private:
-  friend struct DefaultSingletonTraits<DataFetcherImplAndroid>;
-
-  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 CheckMotionBufferReadyToRead();
-  void SetMotionBufferReadyStatus(bool ready);
-  void ClearInternalMotionBuffers();
-
-  void SetOrientationBufferReadyStatus(bool ready);
-
-  // The Java provider of orientation info.
-  base::android::ScopedJavaGlobalRef<jobject> device_orientation_;
-  int number_active_device_motion_sensors_;
-  int received_motion_data_[RECEIVED_MOTION_DATA_MAX];
-  DeviceMotionHardwareBuffer* device_motion_buffer_;
-  DeviceOrientationHardwareBuffer* device_orientation_buffer_;
-  bool is_motion_buffer_ready_;
-  bool is_orientation_buffer_ready_;
-
-  base::Lock motion_buffer_lock_;
-  base::Lock orientation_buffer_lock_;
-
-  DISALLOW_COPY_AND_ASSIGN(DataFetcherImplAndroid);
-};
-
-}  // namespace content
-
-#endif  // CHROME_BROWSER_DEVICE_ORIENTATION_DATA_FETCHER_IMPL_ANDROID_H_