src/Tizen.Sensor/Tizen.Sensor/Plugins/HeartRateMonitorLEDGreenBatch.cs

   1 /*
   2  * Copyright (c) 2020 Samsung Electronics Co., Ltd All Rights Reserved
   3  *
   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
   7  *
   8  * http://www.apache.org/licenses/LICENSE-2.0
   9  *
  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.
  15  */
  16
  17 using System;
  18 using System.Collections.Generic;
  19 using System.ComponentModel;
  20
  21 namespace Tizen.Sensor
  22 {
  23     /// <summary>
  24     /// The HeartRateMonitorLEDGreenBatch class registers callbacks for the HRMLEDGreen batch and provides batch data of HRMLEDGreen batch.
  25     /// </summary>
  26     /// <since_tizen> 8 </since_tizen>
  27     public sealed class HeartRateMonitorLEDGreenBatch : BatchSensor<HeartRateMonitorLEDGreenBatchData>
  28     {
  29         private static string HRMLEDGreenBatchKey = "http://tizen.org/feature/sensor.heart_rate_monitor.led_green.batch";
  30
  31         private event EventHandler<SensorAccuracyChangedEventArgs> _accuracyChanged;
  32
  33         protected override IReadOnlyList<HeartRateMonitorLEDGreenBatchData> ConvertBatchData()
  34         {
  35             List<HeartRateMonitorLEDGreenBatchData> list = new List<HeartRateMonitorLEDGreenBatchData>();
  36             Interop.SensorEventStruct sensorData;
  37             for (int i = 0; i < BatchedEvents.Count; i++)
  38             {
  39                 sensorData = BatchedEvents[i];
  40                 list.Add(new HeartRateMonitorLEDGreenBatchData(sensorData.timestamp, sensorData.accuracy, (uint)sensorData.values[0], (int)sensorData.values[1], (int)sensorData.values[2], (int)sensorData.values[3], (uint)sensorData.values[4]));
  41             }
  42             return list.AsReadOnly(); ;
  43         }
  44
  45         /// <summary>
  46         /// Gets the accuracy of the auto HeartRateMonitorLEDGreenBatch data.
  47         /// </summary>
  48         /// <since_tizen> 8 </since_tizen>
  49         /// <value> Accuracy </value>
  50         public SensorDataAccuracy Accuracy { get; private set; } = SensorDataAccuracy.Undefined;
  51
  52         /// <summary>
  53         /// Returns true or false based on whether the HeartRateMonitorLEDGreenBatch sensor is supported by the device.
  54         /// </summary>
  55         /// <since_tizen> 8 </since_tizen>
  56         /// <value><c>true</c> if supported; otherwise <c>false</c>.</value>
  57         public static bool IsSupported
  58         {
  59             get
  60             {
  61                 Log.Info(Globals.LogTag, "Checking if the HeartRateMonitorLEDGreenBatch is supported");
  62                 return CheckIfSupported(SensorType.HRMLEDGreenBatch, HRMLEDGreenBatchKey);
  63             }
  64         }
  65
  66         /// <summary>
  67         /// Returns the number of HeartRateMonitorLEDGreenBatch sensors available on the device.
  68         /// </summary>
  69         /// <since_tizen> 8 </since_tizen>
  70         /// <value> The count of HeartRateMonitorLEDGreenBatch sensors. </value>
  71         /// <exception cref="InvalidOperationException">Thrown when the operation is invalid for the current state.</exception>
  72         public static int Count
  73         {
  74             get
  75             {
  76                 Log.Info(Globals.LogTag, "Getting the count of accelerometer sensors");
  77                 return GetCount();
  78             }
  79         }
  80
  81         /// <summary>
  82         /// Initializes a new instance of the <see cref="Tizen.Sensor.HeartRateMonitorLEDGreenBatch"/> class.
  83         /// </summary>
  84         /// <since_tizen> 8 </since_tizen>
  85         /// <privilege>http://tizen.org/privilege/healthinfo</privilege>
  86         /// <privlevel>public</privlevel>
  87         /// <feature>http://tizen.org/feature/sensor.heart_rate_monitor.led_green.batch</feature>
  88         /// <exception cref="ArgumentException">Thrown when an invalid argument is used.</exception>
  89         /// <exception cref="NotSupportedException">Thrown when the sensor is not supported.</exception>
  90         /// <exception cref="UnauthorizedAccessException">Thrown when the application has no privilege to use the sensor.</exception>
  91         /// <exception cref="InvalidOperationException">Thrown when the operation is invalid for the current state.</exception>
  92         /// <param name='index'>
  93         /// Index. Default value for this is 0. Index refers to a particular HeartRateMonitorLEDGreenBatch sensor in case of multiple sensors.
  94         /// </param>
  95         public HeartRateMonitorLEDGreenBatch(uint index = 0) : base(index)
  96         {
  97             Log.Info(Globals.LogTag, "Creating HeartRateMonitorLEDGreenBatch object");
  98         }
  99
 100         internal override SensorType GetSensorType()
 101         {
 102             return SensorType.HRMLEDGreenBatch;
 103         }
 104
 105         /// <summary>
 106         /// An event handler for storing the callback functions for the event corresponding to the change in the HeartRateMonitorLEDGreenBatch sensor data.
 107         /// </summary>
 108         /// <since_tizen> 8 </since_tizen>
 109
 110         public event EventHandler<HeartRateMonitorLEDGreenBatchDataUpdatedEventArgs> DataUpdated;
 111
 112         /// <summary>
 113         /// An event handler for accuracy changed events.
 114         /// </summary>
 115         /// <since_tizen> 8 </since_tizen>
 116         public event EventHandler<SensorAccuracyChangedEventArgs> AccuracyChanged
 117         {
 118             add
 119             {
 120                 if (_accuracyChanged == null)
 121                 {
 122                     AccuracyListenStart();
 123                 }
 124                 _accuracyChanged += value;
 125             }
 126             remove
 127             {
 128                 _accuracyChanged -= value;
 129                 if (_accuracyChanged == null)
 130                 {
 131                     AccuracyListenStop();
 132                 }
 133             }
 134         }
 135
 136         private static int GetCount()
 137         {
 138             IntPtr list;
 139             int count;
 140             int error = Interop.SensorManager.GetSensorList(SensorType.HRMLEDGreenBatch, out list, out count);
 141             if (error != (int)SensorError.None)
 142             {
 143                 Log.Error(Globals.LogTag, "Error getting sensor list for HeartRateMonitorLEDGreenBatch");
 144                 count = 0;
 145             }
 146             else
 147                 Interop.Libc.Free(list);
 148             return count;
 149         }
 150
 151         /// <summary>
 152         /// Reads HeartRateMonitorLEDGreenBatch data synchronously.
 153         /// </summary>
 154         internal override void ReadData()
 155         {
 156             int error = Interop.SensorListener.ReadDataList(ListenerHandle, out IntPtr eventsPtr, out uint events_count);
 157             if (error != (int)SensorError.None)
 158             {
 159                 Log.Error(Globals.LogTag, "Error reading HeartRateMonitorLEDGreenBatch data");
 160                 throw SensorErrorFactory.CheckAndThrowException(error, "Reading HeartRateMonitorBatch data failed");
 161             }
 162             UpdateBatchData(eventsPtr, events_count);
 163             Interop.SensorEventStruct sensorData = latestEvent();
 164             Timestamp = sensorData.timestamp;
 165             Accuracy = sensorData.accuracy;
 166             Interop.Libc.Free(eventsPtr);
 167         }
 168
 169         private static Interop.SensorListener.SensorEventsCallback _callback;
 170
 171         internal override void EventListenStart()
 172         {
 173             _callback = (IntPtr sensorHandle, IntPtr eventsPtr, uint events_count, IntPtr data) =>
 174             {
 175                 UpdateBatchData(eventsPtr, events_count);
 176                 Interop.SensorEventStruct sensorData = latestEvent();
 177                 Timestamp = (ulong)DateTimeOffset.Now.ToUnixTimeMilliseconds();
 178                 Accuracy = sensorData.accuracy;
 179                 DataUpdated?.Invoke(this, new HeartRateMonitorLEDGreenBatchDataUpdatedEventArgs((IReadOnlyList<HeartRateMonitorLEDGreenBatchData>)Data));
 180
 181             };
 182
 183             int error = Interop.SensorListener.SetEventsCallback(ListenerHandle, _callback, IntPtr.Zero);
 184             if (error != (int)SensorError.None)
 185             {
 186                 Log.Error(Globals.LogTag, "Error setting event callback for HeartRateMonitorLEDGreenBatch sensor");
 187                 throw SensorErrorFactory.CheckAndThrowException(error, "Unable to set event callback for HeartRateMonitorLEDGreenBatch");
 188             }
 189         }
 190
 191         internal override void EventListenStop()
 192         {
 193             int error = Interop.SensorListener.UnsetEventsCallback(ListenerHandle);
 194             if (error != (int)SensorError.None)
 195             {
 196                 Log.Error(Globals.LogTag, "Error unsetting event callback for HeartRateMonitorLEDGreenBatch sensor");
 197                 throw SensorErrorFactory.CheckAndThrowException(error, "Unable to unset event callback for HeartRateMonitorLEDGreenBatch");
 198             }
 199         }
 200
 201         private static Interop.SensorListener.SensorAccuracyCallback _accuracyCallback;
 202
 203         private void AccuracyListenStart()
 204         {
 205             _accuracyCallback = (IntPtr sensorHandle, UInt64 timestamp, SensorDataAccuracy accuracy, IntPtr data) =>
 206             {
 207                 Timestamp = timestamp;
 208                 Accuracy = accuracy;
 209                 _accuracyChanged?.Invoke(this, new SensorAccuracyChangedEventArgs(timestamp, accuracy));
 210             };
 211
 212             int error = Interop.SensorListener.SetAccuracyCallback(ListenerHandle, _accuracyCallback, IntPtr.Zero);
 213             if (error != (int)SensorError.None)
 214             {
 215                 Log.Error(Globals.LogTag, "Error setting accuracy event callback for HeartRateMonitorLEDGreenBatch sensor");
 216                 throw SensorErrorFactory.CheckAndThrowException(error, "Unable to set accuracy event callback for HeartRateMonitorLEDGreenBatch");
 217             }
 218         }
 219
 220         private void AccuracyListenStop()
 221         {
 222             int error = Interop.SensorListener.UnsetAccuracyCallback(ListenerHandle);
 223             if (error != (int)SensorError.None)
 224             {
 225                 Log.Error(Globals.LogTag, "Error unsetting accuracy event callback for HeartRateMonitorLEDGreenBatch sensor");
 226                 throw SensorErrorFactory.CheckAndThrowException(error, "Unable to unset accuracy event callback for HeartRateMonitorLEDGreenBatch");
 227             }
 228         }
 229     }
 230 }