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DataPRO/IService/.svn/pristine/04/04912a91c72418d620170db34481da76ae09981d.svn-base

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+using DTS.Common.Enums.DASFactory;
+using DTS.Common.Interface.DASFactory;
+using DTS.Common.Interface.StatusAndProgressBar;
+using DTS.Common.Utilities.Logging;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading;
+using System.Threading.Tasks;
+using static DTS.DASLib.Service.ServiceBase;
+
+namespace DTS.DASLib.Service.StateMachine
+{
+    public class RealtimeStatusInformation : IStatusInfo
+    {
+        private readonly ManualResetEvent stopRealtimeEvent = new ManualResetEvent(true);
+
+        //this is a wait handle that is set when we get a callback from realtime service saying it's done
+        private readonly ManualResetEvent realtimeDoneFromService = new ManualResetEvent(false);
+
+        /// <summary>
+        /// action to take on completion of Realtime start
+        /// </summary>
+        public Action CompleteAction { get; set; }
+        public void Reset()
+        {
+            CompleteAction = null;
+            realtimeDoneFromService.Reset();
+            stopRealtimeEvent.Set();
+            CouldNotStartRealtime = false;
+        }
+
+        public Action<double, double> SetRealtimeSampleRateAAF { get; set; }
+        public bool CouldNotStartRealtime { get; set; }
+        public Callback StartRealtimeCallback { get; set; }
+
+        /// <summary>
+        /// returns the Anti-Alias Filter (AAF) for the DAS in question
+        /// this is dependent on the sample rate for the hardware and a ratio in the config file
+        /// (RealtimeSampleRateAAFilterRatio)
+        /// </summary>
+        /// <param name="das"></param>
+        /// <returns></returns>
+        private float GetRealtimeAAFForHardware(IDASCommunication idas, double samplerate)
+        {
+            var param = States.Instance.Realtime.Status.RealtimeParams;
+            if (param.SliceTurnOffAAFRealtime && DFConstantsAndEnums.SupportsTurnOffAAFRealtime(idas))
+            {
+                return Common.Constants.SLICE2_NO_AAF_REALTIME_RATE;
+            }
+            //for now there is no additional work done
+            if (0 == param.RealtimeSampleRateAAFilterRatio) { return Convert.ToSingle(samplerate); }
+            return (float)samplerate / param.RealtimeSampleRateAAFilterRatio;
+        }
+
+        public bool IsInRealtime
+        {
+            get { return !stopRealtimeEvent.WaitOne(2, false); }
+        }
+
+        public void StopRealtime()
+        {
+            stopRealtimeEvent.Set();
+        }
+
+        Task _realtimeTask;
+        public void StartRealtime()
+        {
+            _realtimeTask = Task.Run(() =>
+            {
+                var param = States.Instance.Realtime.Status.RealtimeParams;
+                var status = States.Instance.Realtime.Status.RealtimeStatus;
+                var global = States.Instance.Realtime.Status.GlobalStatusParameters;
+                StartRealtime(param.UnitsToStartRealtime, param.ModuleIndices, param.UseSingleSampleMode,
+           param.RealtimeSampleRate, param.RealtimeDelayBetweenPollsInMilliSecond, param.AllowMultipleSampleRealtime, status.SetRealtimeSampleRateAAF, status.CompleteAction,
+            param.IdasToActiveChannels, status.StartRealtimeCallback);
+            });
+        }
+
+        public void StartRealtime(List<IDASCommunication> ldas, List<int> moduleArrayIndicies, bool useSingleSampleMode,
+        double realtimeSampleRate, int realtimeDelayBetweenPolls, bool allowMultipleSampleRealtime, Action<double, double> SetRealtimeSampleRateAAF, Action CompleteAction,
+         Dictionary<IDASCommunication, byte[]> idasToActiveChannels, Callback StartRealtimeCallback
+         )
+        {
+            var startRealtimeCallback = new Callback(StartRealtimeCallback);
+            startRealtimeCallback += (data) =>
+            {
+                if (data.Status == CallbackData.CallbackStatus.AllFinished)
+                {
+                    //service is done, mark it
+                    realtimeDoneFromService.Set();
+                }
+                if (data.Status == CallbackData.CallbackStatus.Failure)
+                {
+
+                }
+            };
+            stopRealtimeEvent.Reset();
+            using (var realtimeService = new RealtimeService())
+            {
+                try
+                {
+                    if (ldas.Count > 0)
+                    {
+
+                        if (useSingleSampleMode)
+                        {
+                            realtimeDoneFromService.Reset();
+                            realtimeService.StartActivePolling(ldas, startRealtimeCallback, ldas,
+                                stopRealtimeEvent, idasToActiveChannels);
+                            SetRealtimeSampleRateAAF(double.NaN, double.NaN);
+                        }
+                        else
+                        {
+                            realtimeDoneFromService.Reset();
+                            realtimeService.Start(ldas,
+                                Convert.ToInt32(realtimeSampleRate),
+                                realtimeDelayBetweenPolls,
+                                startRealtimeCallback,
+                                ldas,
+                                allowMultipleSampleRealtime,
+                                moduleArrayIndicies.ToArray(),
+                                stopRealtimeEvent,
+                                idasToActiveChannels,
+                                GetRealtimeAAFForHardware);
+                            if (ldas.Any())
+                            {
+                                SetRealtimeSampleRateAAF(realtimeSampleRate,
+                                    GetRealtimeAAFForHardware(ldas[0], realtimeSampleRate));
+                            }
+                            else
+                            {
+                                SetRealtimeSampleRateAAF(double.NaN, double.NaN);
+                            }
+                        }
+                    }
+                }
+                catch (Exception ex)
+                {
+                    APILogger.Log(ex);
+                    CouldNotStartRealtime = true;
+                    //there was an exception , stop the realtime and service
+                    stopRealtimeEvent.Set();
+                    realtimeDoneFromService.Set();
+                }
+                finally
+                {
+                    CompleteAction();
+                }
+
+                var mr = new ManualResetEvent(false);
+                realtimeService.ServiceAvailable += delegate
+                {
+                    realtimeService.ServiceAvailable -= delegate { };
+                    mr.Set();
+                };
+
+                while (!stopRealtimeEvent.WaitOne(30, false) && !mr.WaitOne(1, false))
+                {
+                    Thread.Sleep(1);
+                }
+                //either realtime event was signalled to stop (datapro) or the service actually did already stop
+                //go and set the event handle to stopped to notify service in case it's running
+                stopRealtimeEvent.Set();
+                //now wait for the event from the service saying it's stopped
+                realtimeDoneFromService.WaitOne();
+            }
+        }
+    }
+}