content/browser/device_sensors/inertial_sensor_consts.h

   1 // Copyright 2014 The Chromium Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 #ifndef CONTENT_BROWSER_DEVICE_SENSORS_INERTIAL_SENSOR_CONSTS_H_
   6 #define CONTENT_BROWSER_DEVICE_SENSORS_INERTIAL_SENSOR_CONSTS_H_
   7
   8 #include "base/time/time.h"
   9
  10 namespace content {
  11
  12 // Constants related to the Device {Motion|Orientation|Light} APIs.
  13
  14 enum ConsumerType {
  15   CONSUMER_TYPE_MOTION = 1 << 0,
  16   CONSUMER_TYPE_ORIENTATION = 1 << 1,
  17   CONSUMER_TYPE_LIGHT = 1 << 2,
  18 };
  19
  20 // Specifies the sampling rate for sensor data updates.
  21 // Note that when changing this value it is desirable to have an adequate
  22 // matching value |DeviceSensorEventPump::kDefaultPumpFrequencyHz| in
  23 // content/renderer/device_orientation/device_sensor_event_pump.cc.
  24 const int kInertialSensorSamplingRateHz = 60;
  25 const int kInertialSensorIntervalMicroseconds =
  26     base::Time::kMicrosecondsPerSecond / kInertialSensorSamplingRateHz;
  27
  28 // Corresponding |kDefaultLightPumpFrequencyHz| is in
  29 // content/renderer/device_sensors/device_light_event_pump.cc.
  30 const int kLightSensorSamplingRateHz = 5;
  31 const int kLightSensorIntervalMicroseconds =
  32     base::Time::kMicrosecondsPerSecond / kLightSensorSamplingRateHz;
  33
  34 }  // namespace content
  35
  36 #endif  // CONTENT_BROWSER_DEVICE_SENSORS_INERTIAL_SENSOR_CONSTS_H_