/*
* Copyright (c) 2016 Samsung Electronics Co., Ltd All Rights Reserved
*
* Licensed under the Apache License, Version 2.0 (the License);
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an AS IS BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
using System;
namespace Tizen.Sensor
{
///
/// The WalkingActivityDetector class is used for registering callbacks for the walking activity detector and getting the walking state.
///
public sealed class WalkingActivityDetector : ActivityDetector
{
private static string ActivityDetectorKey = "http://tizen.org/feature/sensor.activity_recognition";
///
/// Gets the state of the walking activity detector.
///
/// 3
/// The walking state.
public DetectorState Walking { get; private set; } = DetectorState.Unknown;
///
/// Returns true or false based on whether the walking activity detector is supported by the device.
///
/// 3
/// true if supported; otherwise false.
public static bool IsSupported
{
get
{
Log.Info(Globals.LogTag, "Checking if the walking activity detector is supported");
return CheckIfSupported(SensorType.WalkingActivityDetector, ActivityDetectorKey);
}
}
///
/// Returns the number of walking activity detectors available on the device.
///
/// 3
/// The count of walking activity detectors.
public static int Count
{
get
{
Log.Info(Globals.LogTag, "Getting the count of walking activity detectors");
return GetCount();
}
}
///
/// Initializes a new instance of the class.
///
/// 3
/// http://tizen.org/feature/sensor.activity_recognition
/// Thrown when an invalid argument is used.
/// Thrown when the sensor is not supported.
/// Thrown when the operation is invalid for the current state.
///
/// Index. Default value for this is 0. Index refers to a particular walking activity detector in case of multiple sensors.
///
public WalkingActivityDetector(uint index = 0) : base(index)
{
SetAttribute((SensorAttribute)ActivityAttribute, (int)ActivityType.Walking);
Log.Info(Globals.LogTag, "Creating walking activity gesture detector object");
}
private static int GetCount()
{
IntPtr list;
int count;
int error = Interop.SensorManager.GetSensorList(SensorType.WalkingActivityDetector, out list, out count);
if (error != (int)SensorError.None)
{
Log.Error(Globals.LogTag, "Error getting sensor list for walking activity detector");
count = 0;
}
else
Interop.Libc.Free(list);
return count;
}
///
/// An event handler for storing the callback functions for the event corresponding to the change in the walking activity gesture detector data.
///
/// 3
public event EventHandler DataUpdated;
internal static Interop.SensorListener.SensorEventCallback _callback;
internal override void EventListenStart()
{
_callback = (IntPtr sensorHandle, IntPtr eventPtr, IntPtr data) => {
Interop.SensorEventStruct sensorData = Interop.IntPtrToEventStruct(eventPtr);
TimeSpan = new TimeSpan((Int64)sensorData.timestamp);
Walking = (DetectorState)sensorData.values[0];
ActivityAccuracy = (SensorDataAccuracy) sensorData.accuracy;
DataUpdated?.Invoke(this, new WalkingActivityDetectorDataUpdatedEventArgs(sensorData.values[0]));
};
int error = Interop.SensorListener.SetEventCallback(ListenerHandle, Interval, _callback, IntPtr.Zero);
if (error != (int)SensorError.None)
{
Log.Error(Globals.LogTag, "Error setting event callback for walking activity detector");
throw SensorErrorFactory.CheckAndThrowException(error, "Unable to set event callback for walking activity detector");
}
}
internal override void EventListenStop()
{
int error = Interop.SensorListener.UnsetEventCallback(ListenerHandle);
if (error != (int)SensorError.None)
{
Log.Error(Globals.LogTag, "Error unsetting event callback for walking activity detector");
throw SensorErrorFactory.CheckAndThrowException(error, "Unable to unset event callback for walking activity detector");
}
}
internal override SensorType GetSensorType()
{
return SensorType.WalkingActivityDetector;
}
}
}