Chromium Code Reviews
chromiumcodereview-hr@appspot.gserviceaccount.com (chromiumcodereview-hr) | Please choose your nickname with Settings | Help | Chromium Project | Gerrit Changes | Sign out
(196)

Unified Diff: content/browser/device_sensors/data_fetcher_shared_memory_mac.cc

Issue 2646093002: Move //content/browser/device_sensor/ into device/sensors (Closed)
Patch Set: gn format & code rebase Created 3 years, 11 months ago
Use n/p to move between diff chunks; N/P to move between comments. Draft comments are only viewable by you.
Jump to:
View side-by-side diff with in-line comments
Download patch
Index: content/browser/device_sensors/data_fetcher_shared_memory_mac.cc
diff --git a/content/browser/device_sensors/data_fetcher_shared_memory_mac.cc b/content/browser/device_sensors/data_fetcher_shared_memory_mac.cc
deleted file mode 100644
index ab455aa6949b9185c7134899a173a8272b2f04ad..0000000000000000000000000000000000000000
--- a/content/browser/device_sensors/data_fetcher_shared_memory_mac.cc
+++ /dev/null
@@ -1,260 +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/data_fetcher_shared_memory.h"
-
-#include <stdint.h>
-
-#include "base/logging.h"
-#include "base/metrics/histogram_macros.h"
-#include "base/single_thread_task_runner.h"
-#include "content/browser/device_sensors/ambient_light_mac.h"
-#include "device/sensors/public/cpp/device_util_mac.h"
-#include "third_party/sudden_motion_sensor/sudden_motion_sensor_mac.h"
-
-namespace {
-
-const double kMeanGravity = 9.80665;
-
-void FetchLight(content::AmbientLightSensor* sensor,
- content::DeviceLightHardwareBuffer* buffer) {
- DCHECK(sensor);
- DCHECK(buffer);
- // Macbook pro has 2 lux values, left and right, we take the average.
- // The raw sensor values are converted to lux using LMUvalueToLux(raw_value)
- // similar to how it is done in Firefox.
- uint64_t lux_value[2];
- if (!sensor->ReadSensorValue(lux_value))
- return;
- uint64_t mean = (lux_value[0] + lux_value[1]) / 2;
- double lux = device::LMUvalueToLux(mean);
- buffer->seqlock.WriteBegin();
- buffer->data.value = lux;
- buffer->seqlock.WriteEnd();
-}
-
-void FetchMotion(SuddenMotionSensor* sensor,
- content::DeviceMotionHardwareBuffer* buffer) {
- DCHECK(sensor);
- DCHECK(buffer);
-
- float axis_value[3];
- if (!sensor->ReadSensorValues(axis_value))
- return;
-
- buffer->seqlock.WriteBegin();
- buffer->data.accelerationIncludingGravityX = axis_value[0] * kMeanGravity;
- buffer->data.hasAccelerationIncludingGravityX = true;
- buffer->data.accelerationIncludingGravityY = axis_value[1] * kMeanGravity;
- buffer->data.hasAccelerationIncludingGravityY = true;
- buffer->data.accelerationIncludingGravityZ = axis_value[2] * kMeanGravity;
- buffer->data.hasAccelerationIncludingGravityZ = true;
- buffer->data.allAvailableSensorsAreActive = true;
- buffer->seqlock.WriteEnd();
-}
-
-void FetchOrientation(SuddenMotionSensor* sensor,
- content::DeviceOrientationHardwareBuffer* buffer) {
- DCHECK(sensor);
- DCHECK(buffer);
-
- // Retrieve per-axis calibrated values.
- float axis_value[3];
- if (!sensor->ReadSensorValues(axis_value))
- return;
-
- // Transform the accelerometer values to W3C draft angles.
- //
- // Accelerometer values are just dot products of the sensor axes
- // by the gravity vector 'g' with the result for the z axis inverted.
- //
- // To understand this transformation calculate the 3rd row of the z-x-y
- // Euler angles rotation matrix (because of the 'g' vector, only 3rd row
- // affects to the result). Note that z-x-y matrix means R = Ry * Rx * Rz.
- // Then, assume alpha = 0 and you get this:
- //
- // x_acc = sin(gamma)
- // y_acc = - cos(gamma) * sin(beta)
- // z_acc = cos(beta) * cos(gamma)
- //
- // After that the rest is just a bit of trigonometry.
- //
- // Also note that alpha can't be provided but it's assumed to be always zero.
- // This is necessary in order to provide enough information to solve
- // the equations.
- //
- const double kRad2deg = 180.0 / M_PI;
- double beta = kRad2deg * atan2(-axis_value[1], axis_value[2]);
- double gamma = kRad2deg * asin(axis_value[0]);
-
- // Make sure that the interval boundaries comply with the specification. At
- // this point, beta is [-180, 180] and gamma is [-90, 90], but the spec has
- // the upper bound open on both.
- if (beta == 180.0)
- beta = -180; // -180 == 180 (upside-down)
- if (gamma == 90.0)
- gamma = nextafter(90, 0);
-
- // At this point, DCHECKing is paranoia. Never hurts.
- DCHECK_GE(beta, -180.0);
- DCHECK_LT(beta, 180.0);
- DCHECK_GE(gamma, -90.0);
- DCHECK_LT(gamma, 90.0);
-
- buffer->seqlock.WriteBegin();
- buffer->data.beta = beta;
- buffer->data.hasBeta = true;
- buffer->data.gamma = gamma;
- buffer->data.hasGamma = true;
- buffer->data.allAvailableSensorsAreActive = true;
- buffer->seqlock.WriteEnd();
-}
-
-} // namespace
-
-namespace content {
-
-DataFetcherSharedMemory::DataFetcherSharedMemory() {
-}
-
-DataFetcherSharedMemory::~DataFetcherSharedMemory() {
-}
-
-void DataFetcherSharedMemory::Fetch(unsigned consumer_bitmask) {
- DCHECK(GetPollingMessageLoop()->task_runner()->BelongsToCurrentThread());
- DCHECK(consumer_bitmask & CONSUMER_TYPE_ORIENTATION ||
- consumer_bitmask & CONSUMER_TYPE_MOTION ||
- consumer_bitmask & CONSUMER_TYPE_LIGHT);
-
- if (consumer_bitmask & CONSUMER_TYPE_ORIENTATION)
- FetchOrientation(sudden_motion_sensor_.get(), orientation_buffer_);
- if (consumer_bitmask & CONSUMER_TYPE_MOTION)
- FetchMotion(sudden_motion_sensor_.get(), motion_buffer_);
- if (consumer_bitmask & CONSUMER_TYPE_LIGHT)
- FetchLight(ambient_light_sensor_.get(), light_buffer_);
-}
-
-DataFetcherSharedMemory::FetcherType DataFetcherSharedMemory::GetType() const {
- return FETCHER_TYPE_POLLING_CALLBACK;
-}
-
-bool DataFetcherSharedMemory::Start(ConsumerType consumer_type, void* buffer) {
- DCHECK(GetPollingMessageLoop()->task_runner()->BelongsToCurrentThread());
- DCHECK(buffer);
-
- switch (consumer_type) {
- case CONSUMER_TYPE_MOTION: {
- if (!sudden_motion_sensor_)
- sudden_motion_sensor_.reset(SuddenMotionSensor::Create());
- bool sudden_motion_sensor_available =
- sudden_motion_sensor_.get() != nullptr;
-
- motion_buffer_ = static_cast<DeviceMotionHardwareBuffer*>(buffer);
- UMA_HISTOGRAM_BOOLEAN("InertialSensor.MotionMacAvailable",
- sudden_motion_sensor_available);
- if (!sudden_motion_sensor_available) {
- // No motion sensor available, fire an all-null event.
- motion_buffer_->seqlock.WriteBegin();
- motion_buffer_->data.allAvailableSensorsAreActive = true;
- motion_buffer_->seqlock.WriteEnd();
- }
- return sudden_motion_sensor_available;
- }
- case CONSUMER_TYPE_ORIENTATION: {
- if (!sudden_motion_sensor_)
- sudden_motion_sensor_.reset(SuddenMotionSensor::Create());
- bool sudden_motion_sensor_available =
- sudden_motion_sensor_.get() != nullptr;
-
- orientation_buffer_ =
- static_cast<DeviceOrientationHardwareBuffer*>(buffer);
- UMA_HISTOGRAM_BOOLEAN("InertialSensor.OrientationMacAvailable",
- sudden_motion_sensor_available);
- if (sudden_motion_sensor_available) {
- // On Mac we cannot provide absolute orientation.
- orientation_buffer_->seqlock.WriteBegin();
- orientation_buffer_->data.absolute = false;
- orientation_buffer_->seqlock.WriteEnd();
- } else {
- // No motion sensor available, fire an all-null event.
- orientation_buffer_->seqlock.WriteBegin();
- orientation_buffer_->data.allAvailableSensorsAreActive = true;
- orientation_buffer_->seqlock.WriteEnd();
- }
- return sudden_motion_sensor_available;
- }
- case CONSUMER_TYPE_ORIENTATION_ABSOLUTE: {
- orientation_absolute_buffer_ =
- static_cast<DeviceOrientationHardwareBuffer*>(buffer);
- // Absolute device orientation not available on Mac, let the
- // implementation fire an all-null event to signal this to blink.
- orientation_absolute_buffer_->seqlock.WriteBegin();
- orientation_absolute_buffer_->data.absolute = true;
- orientation_absolute_buffer_->data.allAvailableSensorsAreActive = true;
- orientation_absolute_buffer_->seqlock.WriteEnd();
- return false;
- }
- case CONSUMER_TYPE_LIGHT: {
- if (!ambient_light_sensor_)
- ambient_light_sensor_ = AmbientLightSensor::Create();
- bool ambient_light_sensor_available =
- ambient_light_sensor_.get() != nullptr;
-
- light_buffer_ = static_cast<DeviceLightHardwareBuffer*>(buffer);
- if (!ambient_light_sensor_available) {
- light_buffer_->seqlock.WriteBegin();
- light_buffer_->data.value = std::numeric_limits<double>::infinity();
- light_buffer_->seqlock.WriteEnd();
- }
- return ambient_light_sensor_available;
- }
- default:
- NOTREACHED();
- }
- return false;
-}
-
-bool DataFetcherSharedMemory::Stop(ConsumerType consumer_type) {
- DCHECK(GetPollingMessageLoop()->task_runner()->BelongsToCurrentThread());
-
- switch (consumer_type) {
- case CONSUMER_TYPE_MOTION:
- if (motion_buffer_) {
- motion_buffer_->seqlock.WriteBegin();
- motion_buffer_->data.allAvailableSensorsAreActive = false;
- motion_buffer_->seqlock.WriteEnd();
- motion_buffer_ = nullptr;
- }
- return true;
- case CONSUMER_TYPE_ORIENTATION:
- if (orientation_buffer_) {
- orientation_buffer_->seqlock.WriteBegin();
- orientation_buffer_->data.allAvailableSensorsAreActive = false;
- orientation_buffer_->seqlock.WriteEnd();
- orientation_buffer_ = nullptr;
- }
- return true;
- case CONSUMER_TYPE_ORIENTATION_ABSOLUTE:
- if (orientation_absolute_buffer_) {
- orientation_absolute_buffer_->seqlock.WriteBegin();
- orientation_absolute_buffer_->data.allAvailableSensorsAreActive = false;
- orientation_absolute_buffer_->seqlock.WriteEnd();
- orientation_absolute_buffer_ = nullptr;
- }
- return true;
- case CONSUMER_TYPE_LIGHT:
- if (light_buffer_) {
- light_buffer_->seqlock.WriteBegin();
- light_buffer_->data.value = -1;
- light_buffer_->seqlock.WriteEnd();
- light_buffer_ = nullptr;
- }
- return true;
- default:
- NOTREACHED();
- }
- return false;
-}
-
-} // namespace content

Powered by Google App Engine
This is Rietveld 408576698