2 * Copyright (c) 2016 Samsung Electronics Co., Ltd All Rights Reserved
4 * Licensed under the Apache License, Version 2.0 (the License);
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
8 * http://www.apache.org/licenses/LICENSE-2.0
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an AS IS BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
19 namespace Tizen.Sensor
22 /// WalkingActivityDetector Class. Used for registering callbacks for walking activity detector and getting the walking state
24 public sealed class WalkingActivityDetector : ActivityDetector
26 private static string ActivityDetectorKey = "http://tizen.org/feature/sensor.activity_recognition";
29 /// Gets the state of walking activity detector
31 public DetectorState Walking { get; private set; } = DetectorState.Unknown;
34 /// Returns true or false based on whether walking activity detector is supported by device.
36 public static bool IsSupported
40 Log.Info(Globals.LogTag, "Checking if the walking activity detector is supported");
41 return CheckIfSupported(SensorType.WalkingActivityDetector, ActivityDetectorKey);
46 /// Returns the number of walking activity detector available on the device.
48 public static int Count
52 Log.Info(Globals.LogTag, "Getting the count of walking activity detectors");
58 /// Initializes a new instance of the <see cref="Tizen.Sensor.walkingActivityDetector"/> class.
60 /// <feature>http://tizen.org/feature/sensor.activity_recognition</feature>
61 /// <exception cref="ArgumentException">Thrown when an invalid argument is used</exception>
62 /// <exception cref="NotSupportedException">Thrown when the sensor is not supported</exception>
63 /// <exception cref="InvalidOperationException">Thrown when the operation is invalid for the current state</exception>
64 /// <param name='index'>
65 /// Index. Default value for this is 0. Index refers to a particular walking activity detector in case of multiple sensors.
67 public WalkingActivityDetector(uint index = 0) : base(index)
69 SetAttribute((SensorAttribute)ActivityAttribute, (int)ActivityType.Walking);
70 Log.Info(Globals.LogTag, "Creating walking activity gesture detector object");
73 private static int GetCount()
77 int error = Interop.SensorManager.GetSensorList(SensorType.WalkingActivityDetector, out list, out count);
78 if (error != (int)SensorError.None)
80 Log.Error(Globals.LogTag, "Error getting sensor list for walking activity detector");
84 Interop.Libc.Free(list);
89 /// Event Handler for storing the callback functions for event corresponding to change in walking activity gesture detector data.
91 public event EventHandler<WalkingActivityDetectorDataUpdatedEventArgs> DataUpdated;
93 internal static Interop.SensorListener.SensorEventCallback _callback;
95 internal override void EventListenStart()
97 _callback = (IntPtr sensorHandle, IntPtr eventPtr, IntPtr data) => {
98 Interop.SensorEventStruct sensorData = Interop.IntPtrToEventStruct(eventPtr);
100 TimeSpan = new TimeSpan((Int64)sensorData.timestamp);
101 Walking = (DetectorState)sensorData.values[0];
102 ActivityAccuracy = (SensorDataAccuracy) sensorData.accuracy;
104 DataUpdated?.Invoke(this, new WalkingActivityDetectorDataUpdatedEventArgs(sensorData.values[0]));
107 int error = Interop.SensorListener.SetEventCallback(ListenerHandle, Interval, _callback, IntPtr.Zero);
108 if (error != (int)SensorError.None)
110 Log.Error(Globals.LogTag, "Error setting event callback for walking activity detector");
111 throw SensorErrorFactory.CheckAndThrowException(error, "Unable to set event callback for walking activity detector");
115 internal override void EventListenStop()
117 int error = Interop.SensorListener.UnsetEventCallback(ListenerHandle);
118 if (error != (int)SensorError.None)
120 Log.Error(Globals.LogTag, "Error unsetting event callback for walking activity detector");
121 throw SensorErrorFactory.CheckAndThrowException(error, "Unable to unset event callback for walking activity detector");
125 internal override SensorType GetSensorType()
127 return SensorType.WalkingActivityDetector;