Extract device_sensors to /device via Mojofication

content/browser/device_sensors/sensor_manager_android.cc

Index: content/browser/device_sensors/sensor_manager_android.cc
diff --git a/content/browser/device_sensors/sensor_manager_android.cc b/content/browser/device_sensors/sensor_manager_android.cc
deleted file mode 100644
index f63e45a91ffa16af1a793d70664bce5c71dd3a73..0000000000000000000000000000000000000000
--- a/content/browser/device_sensors/sensor_manager_android.cc
+++ /dev/null
@@ -1,453 +0,0 @@
-// 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.
-
-#include "content/browser/device_sensors/sensor_manager_android.h"
-
-#include <string.h>
-
-#include "base/android/jni_android.h"
-#include "base/bind.h"
-#include "base/memory/singleton.h"
-#include "base/metrics/histogram.h"
-#include "content/browser/device_sensors/inertial_sensor_consts.h"
-#include "content/public/browser/browser_thread.h"
-#include "jni/DeviceSensors_jni.h"
-
-using base::android::AttachCurrentThread;
-
-namespace {
-
-enum OrientationSensorType {
-  NOT_AVAILABLE = 0,
-  ROTATION_VECTOR = 1,
-  ACCELEROMETER_MAGNETIC = 2,
-  ORIENTATION_SENSOR_MAX = 3,
-};
-
-void UpdateDeviceOrientationHistogram(OrientationSensorType type) {
-  UMA_HISTOGRAM_ENUMERATION("InertialSensor.DeviceOrientationSensorAndroid",
-                            type,
-                            ORIENTATION_SENSOR_MAX);
-}
-
-}  // namespace
-
-namespace content {
-
-SensorManagerAndroid::SensorManagerAndroid()
-    : number_active_device_motion_sensors_(0),
-      device_light_buffer_(nullptr),
-      device_motion_buffer_(nullptr),
-      device_orientation_buffer_(nullptr),
-      is_light_buffer_ready_(false),
-      is_motion_buffer_ready_(false),
-      is_orientation_buffer_ready_(false),
-      is_using_backup_sensors_for_orientation_(false),
-      is_shutdown_(false) {
-  memset(received_motion_data_, 0, sizeof(received_motion_data_));
-  device_sensors_.Reset(Java_DeviceSensors_getInstance(
-      AttachCurrentThread(), base::android::GetApplicationContext()));
-}
-
-SensorManagerAndroid::~SensorManagerAndroid() {
-}
-
-bool SensorManagerAndroid::Register(JNIEnv* env) {
-  return RegisterNativesImpl(env);
-}
-
-SensorManagerAndroid* SensorManagerAndroid::GetInstance() {
-  return Singleton<SensorManagerAndroid,
-                   LeakySingletonTraits<SensorManagerAndroid> >::get();
-}
-
-void SensorManagerAndroid::GotOrientation(
-    JNIEnv*, jobject, double alpha, double beta, double gamma) {
-  base::AutoLock autolock(orientation_buffer_lock_);
-
-  if (!device_orientation_buffer_)
-    return;
-
-  device_orientation_buffer_->seqlock.WriteBegin();
-  device_orientation_buffer_->data.alpha = alpha;
-  device_orientation_buffer_->data.hasAlpha = true;
-  device_orientation_buffer_->data.beta = beta;
-  device_orientation_buffer_->data.hasBeta = true;
-  device_orientation_buffer_->data.gamma = gamma;
-  device_orientation_buffer_->data.hasGamma = true;
-  device_orientation_buffer_->seqlock.WriteEnd();
-
-  if (!is_orientation_buffer_ready_) {
-    SetOrientationBufferReadyStatus(true);
-    UpdateDeviceOrientationHistogram(is_using_backup_sensors_for_orientation_
-        ? ACCELEROMETER_MAGNETIC : ROTATION_VECTOR);
-  }
-}
-
-void SensorManagerAndroid::GotAcceleration(
-    JNIEnv*, jobject, double x, double y, double z) {
-  base::AutoLock autolock(motion_buffer_lock_);
-
-  if (!device_motion_buffer_)
-    return;
-
-  device_motion_buffer_->seqlock.WriteBegin();
-  device_motion_buffer_->data.accelerationX = x;
-  device_motion_buffer_->data.hasAccelerationX = true;
-  device_motion_buffer_->data.accelerationY = y;
-  device_motion_buffer_->data.hasAccelerationY = true;
-  device_motion_buffer_->data.accelerationZ = z;
-  device_motion_buffer_->data.hasAccelerationZ = true;
-  device_motion_buffer_->seqlock.WriteEnd();
-
-  if (!is_motion_buffer_ready_) {
-    received_motion_data_[RECEIVED_MOTION_DATA_ACCELERATION] = 1;
-    CheckMotionBufferReadyToRead();
-  }
-}
-
-void SensorManagerAndroid::GotAccelerationIncludingGravity(
-    JNIEnv*, jobject, double x, double y, double z) {
-  base::AutoLock autolock(motion_buffer_lock_);
-
-  if (!device_motion_buffer_)
-    return;
-
-  device_motion_buffer_->seqlock.WriteBegin();
-  device_motion_buffer_->data.accelerationIncludingGravityX = x;
-  device_motion_buffer_->data.hasAccelerationIncludingGravityX = true;
-  device_motion_buffer_->data.accelerationIncludingGravityY = y;
-  device_motion_buffer_->data.hasAccelerationIncludingGravityY = true;
-  device_motion_buffer_->data.accelerationIncludingGravityZ = z;
-  device_motion_buffer_->data.hasAccelerationIncludingGravityZ = true;
-  device_motion_buffer_->seqlock.WriteEnd();
-
-  if (!is_motion_buffer_ready_) {
-    received_motion_data_[RECEIVED_MOTION_DATA_ACCELERATION_INCL_GRAVITY] = 1;
-    CheckMotionBufferReadyToRead();
-  }
-}
-
-void SensorManagerAndroid::GotRotationRate(
-    JNIEnv*, jobject, double alpha, double beta, double gamma) {
-  base::AutoLock autolock(motion_buffer_lock_);
-
-  if (!device_motion_buffer_)
-    return;
-
-  device_motion_buffer_->seqlock.WriteBegin();
-  device_motion_buffer_->data.rotationRateAlpha = alpha;
-  device_motion_buffer_->data.hasRotationRateAlpha = true;
-  device_motion_buffer_->data.rotationRateBeta = beta;
-  device_motion_buffer_->data.hasRotationRateBeta = true;
-  device_motion_buffer_->data.rotationRateGamma = gamma;
-  device_motion_buffer_->data.hasRotationRateGamma = true;
-  device_motion_buffer_->seqlock.WriteEnd();
-
-  if (!is_motion_buffer_ready_) {
-    received_motion_data_[RECEIVED_MOTION_DATA_ROTATION_RATE] = 1;
-    CheckMotionBufferReadyToRead();
-  }
-}
-
-void SensorManagerAndroid::GotLight(JNIEnv*, jobject, double value) {
-  base::AutoLock autolock(light_buffer_lock_);
-
-  if (!device_light_buffer_)
-    return;
-
-  device_light_buffer_->seqlock.WriteBegin();
-  device_light_buffer_->data.value = value;
-  device_light_buffer_->seqlock.WriteEnd();
-}
-
-bool SensorManagerAndroid::Start(EventType event_type) {
-  DCHECK(!device_sensors_.is_null());
-  int rate_in_microseconds = (event_type == kTypeLight)
-                                 ? kLightSensorIntervalMicroseconds
-                                 : kInertialSensorIntervalMicroseconds;
-  return Java_DeviceSensors_start(AttachCurrentThread(),
-                                  device_sensors_.obj(),
-                                  reinterpret_cast<intptr_t>(this),
-                                  static_cast<jint>(event_type),
-                                  rate_in_microseconds);
-}
-
-void SensorManagerAndroid::Stop(EventType event_type) {
-  DCHECK(!device_sensors_.is_null());
-  Java_DeviceSensors_stop(AttachCurrentThread(),
-                          device_sensors_.obj(),
-                          static_cast<jint>(event_type));
-}
-
-int SensorManagerAndroid::GetNumberActiveDeviceMotionSensors() {
-  DCHECK(!device_sensors_.is_null());
-  return Java_DeviceSensors_getNumberActiveDeviceMotionSensors(
-      AttachCurrentThread(), device_sensors_.obj());
-}
-
-bool SensorManagerAndroid::isUsingBackupSensorsForOrientation() {
-  DCHECK(!device_sensors_.is_null());
-  return Java_DeviceSensors_isUsingBackupSensorsForOrientation(
-      AttachCurrentThread(), device_sensors_.obj());
-}
-
-// ----- Shared memory API methods
-
-// --- Device Light
-
-bool SensorManagerAndroid::StartFetchingDeviceLightData(
-    DeviceLightHardwareBuffer* buffer) {
-  if (BrowserThread::CurrentlyOn(BrowserThread::UI)) {
-    StartFetchingLightDataOnUI(buffer);
-  } else {
-    BrowserThread::PostTask(
-        BrowserThread::UI, FROM_HERE,
-        base::Bind(&SensorManagerAndroid::StartFetchingLightDataOnUI,
-                   base::Unretained(this),
-                   buffer));
-  }
-  return true;
-}
-
-void SensorManagerAndroid::StartFetchingLightDataOnUI(
-    DeviceLightHardwareBuffer* buffer) {
-  DCHECK_CURRENTLY_ON(BrowserThread::UI);
-  DCHECK(buffer);
-  if (is_shutdown_)
-    return;
-
-  {
-    base::AutoLock autolock(light_buffer_lock_);
-    device_light_buffer_ = buffer;
-    SetLightBufferValue(-1);
-  }
-  bool success = Start(kTypeLight);
-  if (!success) {
-    base::AutoLock autolock(light_buffer_lock_);
-    SetLightBufferValue(std::numeric_limits<double>::infinity());
-  }
-}
-
-void SensorManagerAndroid::StopFetchingDeviceLightData() {
-  if (BrowserThread::CurrentlyOn(BrowserThread::UI)) {
-    StopFetchingLightDataOnUI();
-    return;
-  }
-
-  BrowserThread::PostTask(
-      BrowserThread::UI, FROM_HERE,
-      base::Bind(&SensorManagerAndroid::StopFetchingLightDataOnUI,
-                 base::Unretained(this)));
-}
-
-void SensorManagerAndroid::StopFetchingLightDataOnUI() {
-  DCHECK_CURRENTLY_ON(BrowserThread::UI);
-  if (is_shutdown_)
-    return;
-
-  Stop(kTypeLight);
-  {
-    base::AutoLock autolock(light_buffer_lock_);
-    if (device_light_buffer_) {
-      SetLightBufferValue(-1);
-      device_light_buffer_ = nullptr;
-    }
-  }
-}
-
-void SensorManagerAndroid::SetLightBufferValue(double lux) {
-  device_light_buffer_->seqlock.WriteBegin();
-  device_light_buffer_->data.value = lux;
-  device_light_buffer_->seqlock.WriteEnd();
-}
-
-// --- Device Motion
-
-bool SensorManagerAndroid::StartFetchingDeviceMotionData(
-    DeviceMotionHardwareBuffer* buffer) {
-  if (BrowserThread::CurrentlyOn(BrowserThread::UI)) {
-    StartFetchingMotionDataOnUI(buffer);
-  } else {
-    BrowserThread::PostTask(
-        BrowserThread::UI, FROM_HERE,
-        base::Bind(&SensorManagerAndroid::StartFetchingMotionDataOnUI,
-                   base::Unretained(this),
-                   buffer));
-  }
-  return true;
-}
-
-void SensorManagerAndroid::StartFetchingMotionDataOnUI(
-    DeviceMotionHardwareBuffer* buffer) {
-  DCHECK_CURRENTLY_ON(BrowserThread::UI);
-  DCHECK(buffer);
-  if (is_shutdown_)
-    return;
-
-  {
-    base::AutoLock autolock(motion_buffer_lock_);
-    device_motion_buffer_ = buffer;
-    ClearInternalMotionBuffers();
-  }
-  Start(kTypeMotion);
-
-  // If no motion data can ever be provided, the number of active device motion
-  // sensors will be zero. In that case flag the shared memory buffer
-  // as ready to read, as it will not change anyway.
-  number_active_device_motion_sensors_ = GetNumberActiveDeviceMotionSensors();
-  {
-    base::AutoLock autolock(motion_buffer_lock_);
-    CheckMotionBufferReadyToRead();
-  }
-}
-
-void SensorManagerAndroid::StopFetchingDeviceMotionData() {
-  if (BrowserThread::CurrentlyOn(BrowserThread::UI)) {
-    StopFetchingMotionDataOnUI();
-    return;
-  }
-
-  BrowserThread::PostTask(
-      BrowserThread::UI, FROM_HERE,
-      base::Bind(&SensorManagerAndroid::StopFetchingMotionDataOnUI,
-                 base::Unretained(this)));
-}
-
-void SensorManagerAndroid::StopFetchingMotionDataOnUI() {
-  DCHECK_CURRENTLY_ON(BrowserThread::UI);
-  if (is_shutdown_)
-    return;
-
-  Stop(kTypeMotion);
-  {
-    base::AutoLock autolock(motion_buffer_lock_);
-    if (device_motion_buffer_) {
-      ClearInternalMotionBuffers();
-      device_motion_buffer_ = nullptr;
-    }
-  }
-}
-
-void SensorManagerAndroid::CheckMotionBufferReadyToRead() {
-  if (received_motion_data_[RECEIVED_MOTION_DATA_ACCELERATION] +
-      received_motion_data_[RECEIVED_MOTION_DATA_ACCELERATION_INCL_GRAVITY] +
-      received_motion_data_[RECEIVED_MOTION_DATA_ROTATION_RATE] ==
-      number_active_device_motion_sensors_) {
-    device_motion_buffer_->seqlock.WriteBegin();
-    device_motion_buffer_->data.interval =
-        kInertialSensorIntervalMicroseconds / 1000.;
-    device_motion_buffer_->seqlock.WriteEnd();
-    SetMotionBufferReadyStatus(true);
-
-    UMA_HISTOGRAM_BOOLEAN("InertialSensor.AccelerometerAndroidAvailable",
-        received_motion_data_[RECEIVED_MOTION_DATA_ACCELERATION] > 0);
-    UMA_HISTOGRAM_BOOLEAN(
-        "InertialSensor.AccelerometerIncGravityAndroidAvailable",
-        received_motion_data_[RECEIVED_MOTION_DATA_ACCELERATION_INCL_GRAVITY]
-        > 0);
-    UMA_HISTOGRAM_BOOLEAN("InertialSensor.GyroscopeAndroidAvailable",
-        received_motion_data_[RECEIVED_MOTION_DATA_ROTATION_RATE] > 0);
-  }
-}
-
-void SensorManagerAndroid::SetMotionBufferReadyStatus(bool ready) {
-  device_motion_buffer_->seqlock.WriteBegin();
-  device_motion_buffer_->data.allAvailableSensorsAreActive = ready;
-  device_motion_buffer_->seqlock.WriteEnd();
-  is_motion_buffer_ready_ = ready;
-}
-
-void SensorManagerAndroid::ClearInternalMotionBuffers() {
-  memset(received_motion_data_, 0, sizeof(received_motion_data_));
-  number_active_device_motion_sensors_ = 0;
-  SetMotionBufferReadyStatus(false);
-}
-
-// --- Device Orientation
-
-void SensorManagerAndroid::SetOrientationBufferReadyStatus(bool ready) {
-  device_orientation_buffer_->seqlock.WriteBegin();
-  device_orientation_buffer_->data.absolute = ready;
-  device_orientation_buffer_->data.hasAbsolute = ready;
-  device_orientation_buffer_->data.allAvailableSensorsAreActive = ready;
-  device_orientation_buffer_->seqlock.WriteEnd();
-  is_orientation_buffer_ready_ = ready;
-}
-
-bool SensorManagerAndroid::StartFetchingDeviceOrientationData(
-    DeviceOrientationHardwareBuffer* buffer) {
-  if (BrowserThread::CurrentlyOn(BrowserThread::UI)) {
-    StartFetchingOrientationDataOnUI(buffer);
-  } else {
-    BrowserThread::PostTask(
-        BrowserThread::UI, FROM_HERE,
-        base::Bind(&SensorManagerAndroid::StartFetchingOrientationDataOnUI,
-                   base::Unretained(this),
-                   buffer));
-  }
-  return true;
-}
-
-void SensorManagerAndroid::StartFetchingOrientationDataOnUI(
-    DeviceOrientationHardwareBuffer* buffer) {
-  DCHECK_CURRENTLY_ON(BrowserThread::UI);
-  DCHECK(buffer);
-  if (is_shutdown_)
-    return;
-
-  {
-    base::AutoLock autolock(orientation_buffer_lock_);
-    device_orientation_buffer_ = buffer;
-  }
-  bool success = Start(kTypeOrientation);
-
-  {
-    base::AutoLock autolock(orientation_buffer_lock_);
-    // If Start() was unsuccessful then set the buffer ready flag to true
-    // to start firing all-null events.
-    SetOrientationBufferReadyStatus(!success);
-  }
-
-  if (!success) {
-    UpdateDeviceOrientationHistogram(NOT_AVAILABLE);
-  } else {
-    is_using_backup_sensors_for_orientation_ =
-        isUsingBackupSensorsForOrientation();
-  }
-}
-
-void SensorManagerAndroid::StopFetchingDeviceOrientationData() {
-  if (BrowserThread::CurrentlyOn(BrowserThread::UI)) {
-    StopFetchingOrientationDataOnUI();
-    return;
-  }
-
-  BrowserThread::PostTask(
-      BrowserThread::UI, FROM_HERE,
-      base::Bind(&SensorManagerAndroid::StopFetchingOrientationDataOnUI,
-                 base::Unretained(this)));
-}
-
-void SensorManagerAndroid::StopFetchingOrientationDataOnUI() {
-  DCHECK_CURRENTLY_ON(BrowserThread::UI);
-  if (is_shutdown_)
-    return;
-
-  Stop(kTypeOrientation);
-  {
-    base::AutoLock autolock(orientation_buffer_lock_);
-    if (device_orientation_buffer_) {
-      SetOrientationBufferReadyStatus(false);
-      device_orientation_buffer_ = nullptr;
-    }
-  }
-}
-
-void SensorManagerAndroid::Shutdown() {
-  DCHECK_CURRENTLY_ON(BrowserThread::UI);
-  is_shutdown_ = true;
-}
-
-}  // namespace content