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HeartRateMonitorBatch.cs
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/
HeartRateMonitorBatch.cs
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/*
* Copyright (c) 2020 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;
using System.Collections.Generic;
using System.ComponentModel;
namespace Tizen.Sensor
{
/// <summary>
/// The HeartRateMonitorBatch class registers callbacks of batch jobs for heart rate monitoring and provides batch data of the heart rate.
/// </summary>
/// <since_tizen> 8 </since_tizen>
public sealed class HeartRateMonitorBatch : BatchSensor<HeartRateMonitorBatchData>
{
private static string HRMBatchKey = "http://tizen.org/feature/sensor.heart_rate_monitor.batch";
private event EventHandler<SensorAccuracyChangedEventArgs> _accuracyChanged;
/// <summary>
/// List of converted HeartRateMonitorBatchData.
/// </summary>
/// <since_tizen> 8 </since_tizen>
protected override IReadOnlyList<HeartRateMonitorBatchData> ConvertBatchData()
{
List<HeartRateMonitorBatchData> list = new List<HeartRateMonitorBatchData>();
Interop.SensorEventStruct sensorData;
for (int i = 0; i < BatchedEvents.Count; i++)
{
sensorData = BatchedEvents[i];
list.Add(new HeartRateMonitorBatchData(sensorData.timestamp, sensorData.accuracy, (HeartRateMonitorBatchState)sensorData.values[0], (int)sensorData.values[1], (int)sensorData.values[2]));
}
return list.AsReadOnly();
}
/// <summary>
/// Gets the accuracy of the HeartRateMonitorBatch data.
/// </summary>
/// <since_tizen> 8 </since_tizen>
/// <value> Accuracy </value>
public SensorDataAccuracy Accuracy { get; private set; } = SensorDataAccuracy.Undefined;
/// <summary>
/// Returns true or false based on whether the HeartRateMonitorBatch sensor is supported by the device.
/// </summary>
/// <since_tizen> 8 </since_tizen>
/// <value><c>true</c> if supported; otherwise <c>false</c>.</value>
public static bool IsSupported
{
get
{
Log.Info(Globals.LogTag, "Checking if the HeartRateMonitorBatch is supported");
return CheckIfSupported(SensorType.HRMBatch, HRMBatchKey);
}
}
/// <summary>
/// Returns the number of HeartRateMonitorBatch sensors available on the device.
/// </summary>
/// <since_tizen> 8 </since_tizen>
/// <value> The count of HeartRateMonitorBatch sensors. </value>
/// <exception cref="InvalidOperationException">Thrown when the operation is invalid for the current state.</exception>
public static int Count
{
get
{
Log.Info(Globals.LogTag, "Getting the count of accelerometer sensors");
return GetCount();
}
}
/// <summary>
/// Initializes a new instance of the <see cref="Tizen.Sensor.HeartRateMonitorBatch"/> class.
/// </summary>
/// <since_tizen> 8 </since_tizen>
/// <privilege>http://tizen.org/privilege/healthinfo</privilege>
/// <privlevel>public</privlevel>
/// <feature>http://tizen.org/feature/sensor.heart_rate_monitor.batch</feature>
/// <exception cref="ArgumentException">Thrown when an invalid argument is used.</exception>
/// <exception cref="NotSupportedException">Thrown when the sensor is not supported.</exception>
/// <exception cref="UnauthorizedAccessException">Thrown when the application has no privilege to use the sensor.</exception>
/// <exception cref="InvalidOperationException">Thrown when the operation is invalid for the current state.</exception>
/// <param name='index'>
/// Index. Default value for this is 0. Index refers to a particular HeartRateMonitorBatch in case of multiple sensors.
/// </param>
public HeartRateMonitorBatch(uint index = 0) : base(index)
{
Log.Info(Globals.LogTag, "Creating HeartRateMonitorBatch object");
}
internal override SensorType GetSensorType()
{
return SensorType.HRMBatch;
}
/// <summary>
/// An event handler for storing the callback functions for the event corresponding to the change in the HeartRateMonitorBatch data.
/// </summary>
/// <since_tizen> 8 </since_tizen>
public event EventHandler<HeartRateMonitorBatchDataUpdatedEventArgs> DataUpdated;
/// <summary>
/// An event handler for accuracy changed events.
/// </summary>
/// <since_tizen> 8 </since_tizen>
public event EventHandler<SensorAccuracyChangedEventArgs> AccuracyChanged
{
add
{
if (_accuracyChanged == null)
{
AccuracyListenStart();
}
_accuracyChanged += value;
}
remove
{
_accuracyChanged -= value;
if (_accuracyChanged == null)
{
AccuracyListenStop();
}
}
}
private static int GetCount()
{
IntPtr list;
int count;
int error = Interop.SensorManager.GetSensorList(SensorType.HRMBatch, out list, out count);
if (error != (int)SensorError.None)
{
Log.Error(Globals.LogTag, "Error getting sensor list for HeartRateMonitorBatch");
count = 0;
}
else
Interop.Libc.Free(list);
return count;
}
/// <summary>
/// Reads HeartRateMonitorBatch data synchronously.
/// </summary>
internal override void ReadData()
{
int error = Interop.SensorListener.ReadDataList(ListenerHandle, out IntPtr eventsPtr, out uint events_count);
if (error != (int)SensorError.None)
{
Log.Error(Globals.LogTag, "Error reading HeartRateMonitorBatch data");
throw SensorErrorFactory.CheckAndThrowException(error, "Reading HeartRateMonitorBatch data failed");
}
UpdateBatchData(eventsPtr, events_count);
Interop.SensorEventStruct sensorData = latestEvent();
Timestamp = (ulong)DateTimeOffset.Now.ToUnixTimeMilliseconds();
Accuracy = sensorData.accuracy;
Interop.Libc.Free(eventsPtr);
}
private static Interop.SensorListener.SensorEventsCallback _callback;
internal override void EventListenStart()
{
_callback = (IntPtr sensorHandle, IntPtr eventsPtr, uint events_count, IntPtr data) =>
{
UpdateBatchData(eventsPtr, events_count);
Interop.SensorEventStruct sensorData = latestEvent();
Timestamp = (ulong)DateTimeOffset.Now.ToUnixTimeMilliseconds();
Accuracy = sensorData.accuracy;
DataUpdated?.Invoke(this, new HeartRateMonitorBatchDataUpdatedEventArgs((IReadOnlyList<HeartRateMonitorBatchData>)Data));
};
int error = Interop.SensorListener.SetEventsCallback(ListenerHandle, _callback, IntPtr.Zero);
if (error != (int)SensorError.None)
{
Log.Error(Globals.LogTag, "Error setting event callback for HeartRateMonitorBatch sensor");
throw SensorErrorFactory.CheckAndThrowException(error, "Unable to set event callback for HeartRateMonitorBatch");
}
}
internal override void EventListenStop()
{
int error = Interop.SensorListener.UnsetEventsCallback(ListenerHandle);
if (error != (int)SensorError.None)
{
Log.Error(Globals.LogTag, "Error unsetting event callback for HeartRateMonitorBatch sensor");
throw SensorErrorFactory.CheckAndThrowException(error, "Unable to unset event callback for HeartRateMonitorBatch");
}
}
private static Interop.SensorListener.SensorAccuracyCallback _accuracyCallback;
private void AccuracyListenStart()
{
_accuracyCallback = (IntPtr sensorHandle, ulong timestamp, SensorDataAccuracy accuracy, IntPtr data) =>
{
Timestamp = timestamp;
Accuracy = accuracy;
_accuracyChanged?.Invoke(this, new SensorAccuracyChangedEventArgs(timestamp, accuracy));
};
int error = Interop.SensorListener.SetAccuracyCallback(ListenerHandle, _accuracyCallback, IntPtr.Zero);
if (error != (int)SensorError.None)
{
Log.Error(Globals.LogTag, "Error setting accuracy event callback for HeartRateMonitorBatch sensor");
throw SensorErrorFactory.CheckAndThrowException(error, "Unable to set accuracy event callback for HeartRateMonitorBatch");
}
}
private void AccuracyListenStop()
{
int error = Interop.SensorListener.UnsetAccuracyCallback(ListenerHandle);
if (error != (int)SensorError.None)
{
Log.Error(Globals.LogTag, "Error unsetting accuracy event callback for HeartRateMonitorBatch sensor");
throw SensorErrorFactory.CheckAndThrowException(error, "Unable to unset accuracy event callback for HeartRateMonitorBatch");
}
}
}
}