Essentials/src/PepperDash.Essentials.Devices.Common/VideoCodec/VideoCodecBase.cs

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using Crestron.SimplSharp.CrestronIO;
using Crestron.SimplSharpPro.DeviceSupport;
using Crestron.SimplSharp;
using PepperDash.Core;
using PepperDash.Core.Intersystem;
using PepperDash.Core.Intersystem.Tokens;
using PepperDash.Essentials.Core;
using PepperDash.Essentials.Core.Bridges;
using PepperDash.Essentials.Core.Config;
using PepperDash.Essentials.Core.Devices;
using PepperDash.Essentials.Core.DeviceTypeInterfaces;
using PepperDash.Essentials.Devices.Common.Cameras;
using PepperDash.Essentials.Devices.Common.Codec;
using PepperDash.Essentials.Devices.Common.VideoCodec.Interfaces;
using PepperDash.Essentials.Core.Bridges.JoinMaps;
using Feedback = PepperDash.Essentials.Core.Feedback;
using Serilog.Events;
using PepperDash.Essentials.Core.Routing;

namespace PepperDash.Essentials.Devices.Common.VideoCodec
{
	public abstract class VideoCodecBase : ReconfigurableDevice, IRoutingInputsOutputs,
		IUsageTracking, IHasDialer, IHasContentSharing, ICodecAudio, iVideoCodecInfo, IBridgeAdvanced, IHasStandbyMode
	{
		private const int XSigEncoding = 28591;
        protected const int MaxParticipants = 50;
		private readonly byte[] _clearBytes = XSigHelpers.ClearOutputs();

	    private IHasDirectory _directoryCodec;
	    private BasicTriList _directoryTrilist;
	    private VideoCodecControllerJoinMap _directoryJoinmap;

        protected string _timeFormatSpecifier;
	    protected string _dateFormatSpecifier; 


		protected VideoCodecBase(DeviceConfig config)
			: base(config)
		{

			StandbyIsOnFeedback = new BoolFeedback(StandbyIsOnFeedbackFunc);
			PrivacyModeIsOnFeedback = new BoolFeedback(PrivacyModeIsOnFeedbackFunc);
			VolumeLevelFeedback = new IntFeedback(VolumeLevelFeedbackFunc);
			MuteFeedback = new BoolFeedback(MuteFeedbackFunc);
			SharingSourceFeedback = new StringFeedback(SharingSourceFeedbackFunc);
			SharingContentIsOnFeedback = new BoolFeedback(SharingContentIsOnFeedbackFunc);

            // TODO [ ] hotfix/videocodecbase-max-meeting-xsig-set
            MeetingsToDisplayFeedback = new IntFeedback(() => MeetingsToDisplay);

			InputPorts = new RoutingPortCollection<RoutingInputPort>();
			OutputPorts = new RoutingPortCollection<RoutingOutputPort>();

			ActiveCalls = new List<CodecActiveCallItem>();
		}

		public IBasicCommunication Communication { get; protected set; }

		/// <summary>
		/// An internal pseudo-source that is routable and connected to the osd input
		/// </summary>
		public DummyRoutingInputsDevice OsdSource { get; protected set; }

		public BoolFeedback StandbyIsOnFeedback { get; private set; }

		protected abstract Func<bool> PrivacyModeIsOnFeedbackFunc { get; }
		protected abstract Func<int> VolumeLevelFeedbackFunc { get; }
		protected abstract Func<bool> MuteFeedbackFunc { get; }
		protected abstract Func<bool> StandbyIsOnFeedbackFunc { get; }

		public List<CodecActiveCallItem> ActiveCalls { get; set; }

		public bool ShowSelfViewByDefault { get; protected set; }

        public bool SupportsCameraOff { get; protected set; }
        public bool SupportsCameraAutoMode { get; protected set; }

		public bool IsReady { get; protected set; }

		public virtual List<Feedback> Feedbacks
		{
			get
			{
				return new List<Feedback>
                {
                    PrivacyModeIsOnFeedback,
                    SharingSourceFeedback
                };
			}
		}

		protected abstract Func<string> SharingSourceFeedbackFunc { get; }
		protected abstract Func<bool> SharingContentIsOnFeedbackFunc { get; }

		#region ICodecAudio Members

		public abstract void PrivacyModeOn();
		public abstract void PrivacyModeOff();
		public abstract void PrivacyModeToggle();
		public BoolFeedback PrivacyModeIsOnFeedback { get; private set; }


		public BoolFeedback MuteFeedback { get; private set; }

		public abstract void MuteOff();

		public abstract void MuteOn();

		public abstract void SetVolume(ushort level);

		public IntFeedback VolumeLevelFeedback { get; private set; }

		public abstract void MuteToggle();

		public abstract void VolumeDown(bool pressRelease);


		public abstract void VolumeUp(bool pressRelease);

		#endregion

		#region IHasContentSharing Members

		public abstract void StartSharing();
		public abstract void StopSharing();

		public bool AutoShareContentWhileInCall { get; protected set; }

		public StringFeedback SharingSourceFeedback { get; private set; }
		public BoolFeedback SharingContentIsOnFeedback { get; private set; }

		#endregion

		#region IHasDialer Members

		/// <summary>
		/// Fires when the status of any active, dialing, or incoming call changes or is new
		/// </summary>
		public event EventHandler<CodecCallStatusItemChangeEventArgs> CallStatusChange;

		/// <summary>
		/// Returns true when any call is not in state Unknown, Disconnecting, Disconnected
		/// </summary>
		public bool IsInCall
		{
			get
			{
				var value = ActiveCalls != null && ActiveCalls.Any(c => c.IsActiveCall);
				return value;
			}
		}

		public abstract void Dial(string number);
		public abstract void EndCall(CodecActiveCallItem call);
		public abstract void EndAllCalls();
		public abstract void AcceptCall(CodecActiveCallItem call);
		public abstract void RejectCall(CodecActiveCallItem call);
		public abstract void SendDtmf(string s);
        public virtual void SendDtmf(string s, CodecActiveCallItem call) { }

		#endregion

		#region IRoutingInputsOutputs Members

		public RoutingPortCollection<RoutingInputPort> InputPorts { get; private set; }

		public RoutingPortCollection<RoutingOutputPort> OutputPorts { get; private set; }

		#endregion

		#region IUsageTracking Members

		/// <summary>
		/// This object can be added by outside users of this class to provide usage tracking
		/// for various services
		/// </summary>
		public UsageTracking UsageTracker { get; set; }

		#endregion

		#region iVideoCodecInfo Members

		public VideoCodecInfo CodecInfo { get; protected set; }

		#endregion

		public event EventHandler<EventArgs> IsReadyChange;
		public abstract void Dial(Meeting meeting);

		public virtual void Dial(IInvitableContact contact)
		{
		}

		public abstract void ExecuteSwitch(object selector);

		/// <summary>
		/// Helper method to fire CallStatusChange event with old and new status
		/// </summary>
		protected void SetNewCallStatusAndFireCallStatusChange(eCodecCallStatus newStatus, CodecActiveCallItem call)
		{
			call.Status = newStatus;

			OnCallStatusChange(call);
		}

		/// <summary>
		/// 
		/// </summary>
		/// <param name="previousStatus"></param>
		/// <param name="newStatus"></param>
		/// <param name="item"></param>
		protected virtual void OnCallStatusChange(CodecActiveCallItem item)
		{
			var handler = CallStatusChange;
			if (handler != null)
			{
				handler(this, new CodecCallStatusItemChangeEventArgs(item));
			}

            PrivacyModeIsOnFeedback.FireUpdate();

			if (AutoShareContentWhileInCall)
			{
				StartSharing();
			}

			if (UsageTracker != null)
			{
				if (IsInCall && !UsageTracker.UsageTrackingStarted)
				{
					UsageTracker.StartDeviceUsage();
				}
				else if (UsageTracker.UsageTrackingStarted && !IsInCall)
				{
					UsageTracker.EndDeviceUsage();
				}
			}
		}

		/// <summary>
		/// Sets IsReady property and fires the event. Used for dependent classes to sync up their data.
		/// </summary>
		protected void SetIsReady()
		{
			CrestronInvoke.BeginInvoke((o) =>
				{
					try
					{
						IsReady = true;
						var h = IsReadyChange;
						if (h != null)
						{
							h(this, new EventArgs());
						}
					}
					catch (Exception e)
					{
						Debug.LogMessage(LogEventLevel.Verbose, this, "Error in SetIsReady() : {0}", e);
					}
				});
		}

		// **** DEBUGGING THINGS ****
		/// <summary>
		/// 
		/// </summary>
		public virtual void ListCalls()
		{
            Debug.LogMessage(LogEventLevel.Debug, this, "Active Calls:");

			var sb = new StringBuilder();
			foreach (var c in ActiveCalls)
			{
				sb.AppendFormat("id: {0} number: {1} -- name: {2} status: {3} onHold: {4}\r\n", c.Id, c.Number, c.Name, c.Status, c.IsOnHold);
			}
			Debug.LogMessage(LogEventLevel.Debug, this, "\n{0}\n", sb.ToString());
		}

		public abstract void StandbyActivate();

		public abstract void StandbyDeactivate();

		#region Implementation of IBridgeAdvanced

		public abstract void LinkToApi(BasicTriList trilist, uint joinStart, string joinMapKey, EiscApiAdvanced bridge);

		/// <summary>
		/// Use this method when using a plain VideoCodecControllerJoinMap
		/// </summary>
		/// <param name="codec"></param>
		/// <param name="trilist"></param>
		/// <param name="joinStart"></param>
		/// <param name="joinMapKey"></param>
		/// <param name="bridge"></param>
		protected void LinkVideoCodecToApi(VideoCodecBase codec, BasicTriList trilist, uint joinStart, string joinMapKey,
			EiscApiAdvanced bridge)
		{
			var joinMap = new VideoCodecControllerJoinMap(joinStart);

			var customJoins = JoinMapHelper.TryGetJoinMapAdvancedForDevice(joinMapKey);

			if (customJoins != null)
			{
				joinMap.SetCustomJoinData(customJoins);
			}

			if (bridge != null)
			{
				bridge.AddJoinMap(Key, joinMap);
			}

			LinkVideoCodecToApi(codec, trilist, joinMap);

		    trilist.OnlineStatusChange += (device, args) =>
		    {
		        if (!args.DeviceOnLine) return;
		    };
		}

		/// <summary>
		/// Use this method when you need to pass in a join map that extends VideoCodecControllerJoinMap
		/// </summary>
		/// <param name="codec"></param>
		/// <param name="trilist"></param>
		/// <param name="joinMap"></param>
		protected void LinkVideoCodecToApi(VideoCodecBase codec, BasicTriList trilist, VideoCodecControllerJoinMap joinMap)
		{
			Debug.LogMessage(LogEventLevel.Debug, this, "Linking to Trilist {0}", trilist.ID.ToString("X"));

			LinkVideoCodecDtmfToApi(trilist, joinMap);

			LinkVideoCodecCallControlsToApi(trilist, joinMap);

			LinkVideoCodecContentSharingToApi(trilist, joinMap);

			LinkVideoCodecPrivacyToApi(trilist, joinMap);

			LinkVideoCodecVolumeToApi(trilist, joinMap);

            LinkVideoCodecInfoToApi(trilist, joinMap);

            // Register for this event to link any functions that require the codec to be ready first
            codec.IsReadyChange += (o, a) =>
                {
                    if (codec is IHasCodecCameras)
                    {
                        LinkVideoCodecCameraToApi(codec as IHasCodecCameras, trilist, joinMap);
                    }
                };

			if (codec is ICommunicationMonitor)
			{
				LinkVideoCodecCommMonitorToApi(codec as ICommunicationMonitor, trilist, joinMap);
			}


			if (codec is IHasCodecSelfView)
			{
				LinkVideoCodecSelfviewToApi(codec as IHasCodecSelfView, trilist, joinMap);
			}

			if (codec is IHasCameraAutoMode)
			{
				trilist.SetBool(joinMap.CameraSupportsAutoMode.JoinNumber, SupportsCameraAutoMode);
				LinkVideoCodecCameraModeToApi(codec as IHasCameraAutoMode, trilist, joinMap);
			}

			if (codec is IHasCameraOff)
			{
				trilist.SetBool(joinMap.CameraSupportsOffMode.JoinNumber, SupportsCameraOff);
				LinkVideoCodecCameraOffToApi(codec as IHasCameraOff, trilist, joinMap);
			}

			if (codec is IHasCodecLayouts)
			{
				LinkVideoCodecCameraLayoutsToApi(codec as IHasCodecLayouts, trilist, joinMap);
			}


			if (codec is IHasSelfviewPosition)
			{
				LinkVideoCodecSelfviewPositionToApi(codec as IHasSelfviewPosition, trilist, joinMap);
			}

			if (codec is IHasDirectory)
			{
				LinkVideoCodecDirectoryToApi(codec as IHasDirectory, trilist, joinMap);
			}

			if (codec is IHasScheduleAwareness)
			{
				LinkVideoCodecScheduleToApi(codec as IHasScheduleAwareness, trilist, joinMap);
			}

			if (codec is IHasParticipants)
			{
				LinkVideoCodecParticipantsToApi(codec as IHasParticipants, trilist, joinMap);
			}

			if (codec is IHasFarEndContentStatus)
			{
				(codec as IHasFarEndContentStatus).ReceivingContent.LinkInputSig(trilist.BooleanInput[joinMap.RecievingContent.JoinNumber]);
			}

			if (codec is IHasPhoneDialing)
			{
				LinkVideoCodecPhoneToApi(codec as IHasPhoneDialing, trilist, joinMap);
			}

            if (codec is IHasCallHistory)
            {
                LinkVideoCodecCallHistoryToApi(codec as IHasCallHistory, trilist, joinMap);
            }

			trilist.OnlineStatusChange += (device, args) =>
			{
				if (!args.DeviceOnLine) return;

				if (codec is IHasDirectory)
				{
					(codec as IHasDirectory).SetCurrentDirectoryToRoot();
				}

				if (codec is IHasScheduleAwareness)
				{
					(codec as IHasScheduleAwareness).GetSchedule();
				}

				if (codec is IHasParticipants)
				{
					UpdateParticipantsXSig((codec as IHasParticipants).Participants.CurrentParticipants);
				}

				if (codec is IHasCameraAutoMode)
				{
					trilist.SetBool(joinMap.CameraSupportsAutoMode.JoinNumber, SupportsCameraAutoMode);

					(codec as IHasCameraAutoMode).CameraAutoModeIsOnFeedback.FireUpdate();
				}

				if (codec is IHasCodecSelfView)
				{
					(codec as IHasCodecSelfView).SelfviewIsOnFeedback.FireUpdate();
				}

				if (codec is IHasCameraAutoMode)
				{
					(codec as IHasCameraAutoMode).CameraAutoModeIsOnFeedback.FireUpdate();
				}

				if (codec is IHasCameraOff)
				{
					(codec as IHasCameraOff).CameraIsOffFeedback.FireUpdate();
				}

				if (codec is IHasPhoneDialing)
				{
					(codec as IHasPhoneDialing).PhoneOffHookFeedback.FireUpdate();
				}

                if (codec is IHasCallHistory)
                {
                    UpdateCallHistory((codec as IHasCallHistory), trilist, joinMap);
                }

				SharingContentIsOnFeedback.FireUpdate();
			};
		}

        private void LinkVideoCodecInfoToApi(BasicTriList trilist, VideoCodecControllerJoinMap joinMap)
        {
            trilist.SetBool(joinMap.MultiSiteOptionIsEnabled.JoinNumber, this.CodecInfo.MultiSiteOptionIsEnabled);
            trilist.SetBool(joinMap.AutoAnswerEnabled.JoinNumber, this.CodecInfo.AutoAnswerEnabled);
            trilist.SetString(joinMap.DeviceIpAddresss.JoinNumber, this.CodecInfo.IpAddress);
            trilist.SetString(joinMap.SipPhoneNumber.JoinNumber, this.CodecInfo.SipPhoneNumber);
            trilist.SetString(joinMap.E164Alias.JoinNumber, this.CodecInfo.E164Alias);
            trilist.SetString(joinMap.H323Id.JoinNumber, this.CodecInfo.H323Id);
            trilist.SetString(joinMap.SipUri.JoinNumber, this.CodecInfo.SipUri);

            trilist.OnlineStatusChange += (o, a) =>
            {
                if (a.DeviceOnLine)
                {
                    trilist.SetBool(joinMap.MultiSiteOptionIsEnabled.JoinNumber, this.CodecInfo.MultiSiteOptionIsEnabled);
                    trilist.SetBool(joinMap.AutoAnswerEnabled.JoinNumber, this.CodecInfo.AutoAnswerEnabled);
                    trilist.SetString(joinMap.DeviceIpAddresss.JoinNumber, this.CodecInfo.IpAddress);
                    trilist.SetString(joinMap.SipPhoneNumber.JoinNumber, this.CodecInfo.SipPhoneNumber);
                    trilist.SetString(joinMap.E164Alias.JoinNumber, this.CodecInfo.E164Alias);
                    trilist.SetString(joinMap.H323Id.JoinNumber, this.CodecInfo.H323Id);
                    trilist.SetString(joinMap.SipUri.JoinNumber, this.CodecInfo.SipUri);
                }
            };
        }

		private void LinkVideoCodecPhoneToApi(IHasPhoneDialing codec, BasicTriList trilist, VideoCodecControllerJoinMap joinMap)
		{
			codec.PhoneOffHookFeedback.LinkInputSig(trilist.BooleanInput[joinMap.PhoneHookState.JoinNumber]);

			trilist.SetSigFalseAction(joinMap.DialPhone.JoinNumber,
				() => codec.DialPhoneCall(trilist.StringOutput[joinMap.PhoneDialString.JoinNumber].StringValue));

			trilist.SetSigFalseAction(joinMap.HangUpPhone.JoinNumber, codec.EndPhoneCall);
		}

		private void LinkVideoCodecSelfviewPositionToApi(IHasSelfviewPosition codec, BasicTriList trilist, VideoCodecControllerJoinMap joinMap)
		{
			trilist.SetSigFalseAction(joinMap.SelfviewPosition.JoinNumber, codec.SelfviewPipPositionToggle);

			codec.SelfviewPipPositionFeedback.LinkInputSig(trilist.StringInput[joinMap.SelfviewPositionFb.JoinNumber]);
		}

		private void LinkVideoCodecCameraOffToApi(IHasCameraOff codec, BasicTriList trilist, VideoCodecControllerJoinMap joinMap)
		{
			trilist.SetSigFalseAction(joinMap.CameraModeOff.JoinNumber, codec.CameraOff);

			codec.CameraIsOffFeedback.OutputChange += (o, a) =>
			{
				if (a.BoolValue)
				{
					trilist.SetBool(joinMap.CameraModeOff.JoinNumber, true);
					trilist.SetBool(joinMap.CameraModeManual.JoinNumber, false);
					trilist.SetBool(joinMap.CameraModeAuto.JoinNumber, false);
					return;
				}

				trilist.SetBool(joinMap.CameraModeOff.JoinNumber, false);

				var autoCodec = codec as IHasCameraAutoMode;

				if (autoCodec == null) return;

				trilist.SetBool(joinMap.CameraModeAuto.JoinNumber, autoCodec.CameraAutoModeIsOnFeedback.BoolValue);
				trilist.SetBool(joinMap.CameraModeManual.JoinNumber, !autoCodec.CameraAutoModeIsOnFeedback.BoolValue);
			};

			if (codec.CameraIsOffFeedback.BoolValue)
			{
				trilist.SetBool(joinMap.CameraModeOff.JoinNumber, true);
				trilist.SetBool(joinMap.CameraModeManual.JoinNumber, false);
				trilist.SetBool(joinMap.CameraModeAuto.JoinNumber, false);
				return;
			}

			trilist.SetBool(joinMap.CameraModeOff.JoinNumber, false);

			var autoModeCodec = codec as IHasCameraAutoMode;

			if (autoModeCodec == null) return;

			trilist.SetBool(joinMap.CameraModeAuto.JoinNumber, autoModeCodec.CameraAutoModeIsOnFeedback.BoolValue);
			trilist.SetBool(joinMap.CameraModeManual.JoinNumber, !autoModeCodec.CameraAutoModeIsOnFeedback.BoolValue);
		}

		private void LinkVideoCodecVolumeToApi(BasicTriList trilist, VideoCodecControllerJoinMap joinMap)
		{
			MuteFeedback.LinkInputSig(trilist.BooleanInput[joinMap.VolumeMuteOn.JoinNumber]);
			MuteFeedback.LinkComplementInputSig(trilist.BooleanInput[joinMap.VolumeMuteOff.JoinNumber]);

			trilist.SetSigFalseAction(joinMap.VolumeMuteOn.JoinNumber, MuteOn);
			trilist.SetSigFalseAction(joinMap.VolumeMuteOff.JoinNumber, MuteOff);
			trilist.SetSigFalseAction(joinMap.VolumeMuteToggle.JoinNumber, MuteToggle);

			VolumeLevelFeedback.LinkInputSig(trilist.UShortInput[joinMap.VolumeLevel.JoinNumber]);

			trilist.SetBoolSigAction(joinMap.VolumeUp.JoinNumber, VolumeUp);
			trilist.SetBoolSigAction(joinMap.VolumeDown.JoinNumber, VolumeDown);

			trilist.SetUShortSigAction(joinMap.VolumeLevel.JoinNumber, SetVolume);

		}

		private void LinkVideoCodecPrivacyToApi(BasicTriList trilist, VideoCodecControllerJoinMap joinMap)
		{
			PrivacyModeIsOnFeedback.LinkInputSig(trilist.BooleanInput[joinMap.MicMuteOn.JoinNumber]);
			PrivacyModeIsOnFeedback.LinkComplementInputSig(trilist.BooleanInput[joinMap.MicMuteOff.JoinNumber]);

			trilist.SetSigFalseAction(joinMap.MicMuteOn.JoinNumber, PrivacyModeOn);
			trilist.SetSigFalseAction(joinMap.MicMuteOff.JoinNumber, PrivacyModeOff);
			trilist.SetSigFalseAction(joinMap.MicMuteToggle.JoinNumber, PrivacyModeToggle);
		}

		private void LinkVideoCodecCommMonitorToApi(ICommunicationMonitor codec, BasicTriList trilist, VideoCodecControllerJoinMap joinMap)
		{
			codec.CommunicationMonitor.IsOnlineFeedback.LinkInputSig(trilist.BooleanInput[joinMap.IsOnline.JoinNumber]);
		}

		private void LinkVideoCodecParticipantsToApi(IHasParticipants codec, BasicTriList trilist, VideoCodecControllerJoinMap joinMap)
		{
            // make sure to update the values when the EISC comes online
            trilist.OnlineStatusChange += (sender, args) =>
                {
                    if (sender.IsOnline)
                    {
                        UpdateParticipantsXSig(codec, trilist, joinMap);
                    }
                };

            // set actions and update the values when the list changes
			codec.Participants.ParticipantsListHasChanged += (sender, args) =>
			{
                SetParticipantActions(trilist, joinMap, codec.Participants.CurrentParticipants);

                UpdateParticipantsXSig(codec, trilist, joinMap);
			};

            trilist.OnlineStatusChange += (device, args) =>
            {
                if (!args.DeviceOnLine) return;

                // TODO [ ] Issue #868
                trilist.SetString(joinMap.CurrentParticipants.JoinNumber, "\xFC");
                UpdateParticipantsXSig(codec, trilist, joinMap);
            };
		}

        private void UpdateParticipantsXSig(IHasParticipants codec, BasicTriList trilist, VideoCodecControllerJoinMap joinMap)
        {
			string participantsXSig;

			if (codec.Participants.CurrentParticipants.Count == 0)
			{
				participantsXSig = Encoding.GetEncoding(XSigEncoding).GetString(_clearBytes, 0, _clearBytes.Length);
				trilist.SetString(joinMap.CurrentParticipants.JoinNumber, participantsXSig);
				trilist.SetUshort(joinMap.ParticipantCount.JoinNumber, (ushort)codec.Participants.CurrentParticipants.Count);
				return;
			}

			participantsXSig = UpdateParticipantsXSig(codec.Participants.CurrentParticipants);

			trilist.SetString(joinMap.CurrentParticipants.JoinNumber, participantsXSig);

			trilist.SetUshort(joinMap.ParticipantCount.JoinNumber, (ushort)codec.Participants.CurrentParticipants.Count);
        }

        /// <summary>
        /// Sets the actions for each participant in the list
        /// </summary>
        private void SetParticipantActions(BasicTriList trilist, VideoCodecControllerJoinMap joinMap, List<Participant> currentParticipants)
        {
            uint index = 0; // track the index of the participant in the 

            foreach (var participant in currentParticipants)
            {
                var p = participant;
                if (index > MaxParticipants) break;

                var audioMuteCodec = this as IHasParticipantAudioMute;
                if (audioMuteCodec != null)
                {
                    trilist.SetSigFalseAction(joinMap.ParticipantAudioMuteToggleStart.JoinNumber + index,
                        () => audioMuteCodec.ToggleAudioForParticipant(p.UserId));

                    trilist.SetSigFalseAction(joinMap.ParticipantVideoMuteToggleStart.JoinNumber + index,
                        () => audioMuteCodec.ToggleVideoForParticipant(p.UserId));
                }

                var pinCodec = this as IHasParticipantPinUnpin;
                if (pinCodec != null)
                {
                    trilist.SetSigFalseAction(joinMap.ParticipantPinToggleStart.JoinNumber + index,
                        () => pinCodec.ToggleParticipantPinState(p.UserId, pinCodec.ScreenIndexToPinUserTo));
                }

                index++;
            }

            // Clear out any previously set actions
            while (index < MaxParticipants)
            {
                trilist.ClearBoolSigAction(joinMap.ParticipantAudioMuteToggleStart.JoinNumber + index);
                trilist.ClearBoolSigAction(joinMap.ParticipantVideoMuteToggleStart.JoinNumber + index);
                trilist.ClearBoolSigAction(joinMap.ParticipantPinToggleStart.JoinNumber + index);

                index++;
            }
        }

		private string UpdateParticipantsXSig(List<Participant> currentParticipants)
		{
			const int maxParticipants = MaxParticipants;
			const int maxDigitals = 7;
			const int maxStrings = 1;
			const int maxAnalogs = 1;
			const int offset = maxDigitals + maxStrings + maxAnalogs; // 9
			var digitalIndex = (maxStrings + maxAnalogs) * maxParticipants; // 100
			var stringIndex = 0;
			var analogIndex = stringIndex + maxParticipants;
			var meetingIndex = 0;

			var tokenArray = new XSigToken[maxParticipants * offset];

			foreach (var participant in currentParticipants)
			{
				if (meetingIndex >= maxParticipants * offset) break;

                //                Debug.LogMessage(LogEventLevel.Verbose, this,
                //@"Updating Participant on xsig:
                //Name: {0} (s{9})
                //AudioMute: {1} (d{10})
                //VideoMute: {2} (d{11})
                //CanMuteVideo: {3} (d{12})
                //CanUMuteVideo: {4} (d{13})
                //IsHost: {5} (d{14})
                //HandIsRaised: {6} (d{15})
                //IsPinned: {7} (d{16})
                //ScreenIndexIsPinnedTo: {8} (a{17})
                //",
                // participant.Name,
                // participant.AudioMuteFb,
                // participant.VideoMuteFb,
                // participant.CanMuteVideo,
                // participant.CanUnmuteVideo,
                // participant.IsHost,
                // participant.HandIsRaisedFb,
                // participant.IsPinnedFb,
                // participant.ScreenIndexIsPinnedToFb,
                // stringIndex + 1,
                // digitalIndex + 1,
                // digitalIndex + 2,
                // digitalIndex + 3,
                // digitalIndex + 4,
                // digitalIndex + 5,
                // digitalIndex + 6,
                // digitalIndex + 7,
                // analogIndex + 1
                // );


				//digitals
				tokenArray[digitalIndex] = new XSigDigitalToken(digitalIndex + 1, participant.AudioMuteFb);
				tokenArray[digitalIndex + 1] = new XSigDigitalToken(digitalIndex + 2, participant.VideoMuteFb);
				tokenArray[digitalIndex + 2] = new XSigDigitalToken(digitalIndex + 3, participant.CanMuteVideo);
				tokenArray[digitalIndex + 3] = new XSigDigitalToken(digitalIndex + 4, participant.CanUnmuteVideo);
				tokenArray[digitalIndex + 4] = new XSigDigitalToken(digitalIndex + 5, participant.IsHost);
                tokenArray[digitalIndex + 5] = new XSigDigitalToken(digitalIndex + 6, participant.HandIsRaisedFb);
                tokenArray[digitalIndex + 6] = new XSigDigitalToken(digitalIndex + 7, participant.IsPinnedFb);

                Debug.LogMessage(LogEventLevel.Verbose, this, "Index: {0} byte value: {1}", digitalIndex + 7, ComTextHelper.GetEscapedText(tokenArray[digitalIndex + 6].GetBytes()));

				//serials
				tokenArray[stringIndex] = new XSigSerialToken(stringIndex + 1, participant.Name);

				//analogs
				tokenArray[analogIndex] = new XSigAnalogToken(analogIndex + 1, (ushort)participant.ScreenIndexIsPinnedToFb);

				digitalIndex += maxDigitals;
				meetingIndex += offset;
				stringIndex += maxStrings;
				analogIndex += maxAnalogs;
			}

			while (meetingIndex < maxParticipants * offset)
			{
				//digitals
				tokenArray[digitalIndex] = new XSigDigitalToken(digitalIndex + 1, false);
				tokenArray[digitalIndex + 1] = new XSigDigitalToken(digitalIndex + 2, false);
				tokenArray[digitalIndex + 2] = new XSigDigitalToken(digitalIndex + 3, false);
				tokenArray[digitalIndex + 3] = new XSigDigitalToken(digitalIndex + 4, false);
				tokenArray[digitalIndex + 4] = new XSigDigitalToken(digitalIndex + 5, false);
				tokenArray[digitalIndex + 5] = new XSigDigitalToken(digitalIndex + 6, false);
				tokenArray[digitalIndex + 6] = new XSigDigitalToken(digitalIndex + 7, false);

				//serials
				tokenArray[stringIndex] = new XSigSerialToken(stringIndex + 1, String.Empty);

				//analogs
				tokenArray[analogIndex] = new XSigAnalogToken(analogIndex + 1, 0);

				digitalIndex += maxDigitals;
				meetingIndex += offset;
				stringIndex += maxStrings;
				analogIndex += maxAnalogs;
			}

            var returnString = GetXSigString(tokenArray);

            //Debug.LogMessage(LogEventLevel.Verbose, this, "{0}", ComTextHelper.GetEscapedText(Encoding.GetEncoding(28591).GetBytes(returnString)));


            return returnString;
		}

		private void LinkVideoCodecContentSharingToApi(BasicTriList trilist, VideoCodecControllerJoinMap joinMap)
		{
			SharingContentIsOnFeedback.LinkInputSig(trilist.BooleanInput[joinMap.SourceShareStart.JoinNumber]);
			SharingContentIsOnFeedback.LinkComplementInputSig(trilist.BooleanInput[joinMap.SourceShareEnd.JoinNumber]);

			SharingSourceFeedback.LinkInputSig(trilist.StringInput[joinMap.CurrentSource.JoinNumber]);

			trilist.SetSigFalseAction(joinMap.SourceShareStart.JoinNumber, StartSharing);
			trilist.SetSigFalseAction(joinMap.SourceShareEnd.JoinNumber, StopSharing);

			trilist.SetBoolSigAction(joinMap.SourceShareAutoStart.JoinNumber, b => AutoShareContentWhileInCall = b);
		}

        private List<Meeting> _currentMeetings = new List<Meeting>();

		private void LinkVideoCodecScheduleToApi(IHasScheduleAwareness codec, BasicTriList trilist, VideoCodecControllerJoinMap joinMap)
		{
			trilist.SetSigFalseAction(joinMap.UpdateMeetings.JoinNumber, codec.GetSchedule);

			trilist.SetUShortSigAction(joinMap.MinutesBeforeMeetingStart.JoinNumber, (i) =>
			{
			    codec.CodecSchedule.MeetingWarningMinutes = i;
			});


            for (uint i = 0; i < joinMap.DialMeetingStart.JoinSpan; i++)
            {
                Debug.LogMessage(LogEventLevel.Debug, this, "Setting action to Dial Meeting {0} to digital join {1}", i + 1, joinMap.DialMeetingStart.JoinNumber + i);
                var joinNumber = joinMap.DialMeetingStart.JoinNumber + i;
                var mtg = i + 1;
                var index = (int)i;

                trilist.SetSigFalseAction(joinNumber, () =>
                {
                    Debug.LogMessage(LogEventLevel.Debug, this, "Meeting {0} Selected (EISC dig-o{1}) > _currentMeetings[{2}].Id: {3}, Title: {4}",
                        mtg, joinMap.DialMeetingStart.JoinNumber + i, index, _currentMeetings[index].Id, _currentMeetings[index].Title);
                    if (_currentMeetings[index] != null)
                        Dial(_currentMeetings[index]);
                });
            }

			codec.CodecSchedule.MeetingsListHasChanged += (sender, args) => UpdateMeetingsList(codec, trilist, joinMap);
			codec.CodecSchedule.MeetingEventChange += (sender, args) =>
				{
					if (args.ChangeType == eMeetingEventChangeType.MeetingStartWarning)
					{
						UpdateMeetingsList(codec, trilist, joinMap);
					}
				};

            trilist.SetUShortSigAction(joinMap.MeetingsToDisplay.JoinNumber, m => MeetingsToDisplay = m);
            MeetingsToDisplayFeedback.LinkInputSig(trilist.UShortInput[joinMap.MeetingsToDisplay.JoinNumber]);

            trilist.OnlineStatusChange += (device, args) =>
            {
                if (!args.DeviceOnLine) return;

                // TODO [ ] Issue #868
                trilist.SetString(joinMap.Schedule.JoinNumber, "\xFC");
                UpdateMeetingsList(codec, trilist, joinMap);
                // TODO [ ] hotfix/videocodecbase-max-meeting-xsig-set
                MeetingsToDisplayFeedback.LinkInputSig(trilist.UShortInput[joinMap.MeetingsToDisplay.JoinNumber]);
            };
        }

		private void UpdateMeetingsList(IHasScheduleAwareness codec, BasicTriList trilist, VideoCodecControllerJoinMap joinMap)
		{
			var currentTime = DateTime.Now;

			_currentMeetings = codec.CodecSchedule.Meetings.Where(m => m.StartTime >= currentTime || m.EndTime >= currentTime).ToList();

            if (_currentMeetings.Count == 0)
            {
                var emptyXSigByteArray = XSigHelpers.ClearOutputs();
                var emptyXSigString = Encoding.GetEncoding(XSigEncoding)
                    .GetString(emptyXSigByteArray, 0, emptyXSigByteArray.Length);

                trilist.SetString(joinMap.Schedule.JoinNumber, emptyXSigString);
                return;
            }

			var meetingsData = UpdateMeetingsListXSig(_currentMeetings);
			trilist.SetString(joinMap.Schedule.JoinNumber, meetingsData);
			trilist.SetUshort(joinMap.MeetingCount.JoinNumber, (ushort)_currentMeetings.Count);

            trilist.OnlineStatusChange += (device, args) =>
            {
                if (!args.DeviceOnLine) return;

                // TODO [ ] Issue #868
                trilist.SetString(joinMap.Schedule.JoinNumber, "\xFC");
                UpdateMeetingsListXSig(_currentMeetings);
            };
		}


        // TODO [ ] hotfix/videocodecbase-max-meeting-xsig-set
	    private int _meetingsToDisplay = 3;
        // TODO [ ] hotfix/videocodecbase-max-meeting-xsig-set
	    protected int MeetingsToDisplay
	    {
	        get { return _meetingsToDisplay; }
	        set {
                _meetingsToDisplay = (ushort) (value == 0 ? 3 : value);
                MeetingsToDisplayFeedback.FireUpdate();
	        }
	    }

        // TODO [ ] hotfix/videocodecbase-max-meeting-xsig-set
        public IntFeedback MeetingsToDisplayFeedback { get; set; }

        private string UpdateMeetingsListXSig(List<Meeting> meetings)
        {
            // TODO [ ] hotfix/videocodecbase-max-meeting-xsig-set
            //const int _meetingsToDisplay = 3;            
	        const int maxDigitals = 2;
	        const int maxStrings = 7;
	        const int offset = maxDigitals + maxStrings;
	        var digitalIndex = maxStrings * _meetingsToDisplay; //15
	        var stringIndex = 0;
	        var meetingIndex = 0;

	        var tokenArray = new XSigToken[_meetingsToDisplay * offset];
	        /* 
	         * Digitals
	         * IsJoinable - 1
	         * IsDialable - 2
	         * 
	         * Serials
	         * Organizer - 1
	         * Title - 2
	         * Start Date - 3
	         * Start Time - 4
	         * End Date - 5
	         * End Time - 6
	         * Id - 7
	        */
            

	        foreach (var meeting in meetings)
	        {
		        var currentTime = DateTime.Now;

		        if (meeting.StartTime < currentTime && meeting.EndTime < currentTime) continue;

		        if (meetingIndex >= _meetingsToDisplay * offset)
		        {
			        Debug.LogMessage(LogEventLevel.Verbose, this, "Max Meetings reached");
			        break;
		        }

		        //digitals
		        tokenArray[digitalIndex] = new XSigDigitalToken(digitalIndex + 1, meeting.Joinable);
		        tokenArray[digitalIndex + 1] = new XSigDigitalToken(digitalIndex + 2, meeting.Dialable);

		        //serials
		        tokenArray[stringIndex] = new XSigSerialToken(stringIndex + 1, meeting.Organizer);
		        tokenArray[stringIndex + 1] = new XSigSerialToken(stringIndex + 2, meeting.Title);
                tokenArray[stringIndex + 2] = new XSigSerialToken(stringIndex + 3, meeting.StartTime.ToString(_dateFormatSpecifier.NullIfEmpty() ?? "d", Global.Culture));
		        tokenArray[stringIndex + 3] = new XSigSerialToken(stringIndex + 4, meeting.StartTime.ToString(_timeFormatSpecifier.NullIfEmpty() ?? "t", Global.Culture));
                tokenArray[stringIndex + 4] = new XSigSerialToken(stringIndex + 5, meeting.EndTime.ToString(_dateFormatSpecifier.NullIfEmpty() ?? "d", Global.Culture));
                tokenArray[stringIndex + 5] = new XSigSerialToken(stringIndex + 6, meeting.EndTime.ToString(_timeFormatSpecifier.NullIfEmpty() ?? "t", Global.Culture));
		        tokenArray[stringIndex + 6] = new XSigSerialToken(stringIndex + 7, meeting.Id);

		        digitalIndex += maxDigitals;
		        meetingIndex += offset;
		        stringIndex += maxStrings;
	        }

	        while (meetingIndex < _meetingsToDisplay * offset)
	        {
		        Debug.LogMessage(LogEventLevel.Verbose, this, "Clearing unused data. Meeting Index: {0} MaxMeetings * Offset: {1}",
			        meetingIndex, _meetingsToDisplay * offset);

		        //digitals
		        tokenArray[digitalIndex] = new XSigDigitalToken(digitalIndex + 1, false);
		        tokenArray[digitalIndex + 1] = new XSigDigitalToken(digitalIndex + 2, false);

		        //serials
		        tokenArray[stringIndex] = new XSigSerialToken(stringIndex + 1, String.Empty);
		        tokenArray[stringIndex + 1] = new XSigSerialToken(stringIndex + 2, String.Empty);
		        tokenArray[stringIndex + 2] = new XSigSerialToken(stringIndex + 3, String.Empty);
		        tokenArray[stringIndex + 3] = new XSigSerialToken(stringIndex + 4, String.Empty);
		        tokenArray[stringIndex + 4] = new XSigSerialToken(stringIndex + 5, String.Empty);
		        tokenArray[stringIndex + 5] = new XSigSerialToken(stringIndex + 6, String.Empty);
		        tokenArray[stringIndex + 6] = new XSigSerialToken(stringIndex + 7, String.Empty);

		        digitalIndex += maxDigitals;
		        meetingIndex += offset;
		        stringIndex += maxStrings;
	        }

	        return GetXSigString(tokenArray);
        }


		private void LinkVideoCodecDirectoryToApi(IHasDirectory codec, BasicTriList trilist, VideoCodecControllerJoinMap joinMap)
		{
			codec.CurrentDirectoryResultIsNotDirectoryRoot.LinkComplementInputSig(
				trilist.BooleanInput[joinMap.DirectoryIsRoot.JoinNumber]);			

			trilist.SetStringSigAction(joinMap.DirectorySearchString.JoinNumber, codec.SearchDirectory);

			trilist.SetUShortSigAction(joinMap.DirectorySelectRow.JoinNumber, (i) => SelectDirectoryEntry(codec, i, trilist, joinMap));

            //Special Change for protected directory clear

            trilist.SetBoolSigAction(joinMap.DirectoryClearSelected.JoinNumber, (b) => SelectDirectoryEntry(_directoryCodec, 0, _directoryTrilist, _directoryJoinmap));

		    // Report feedback for number of contact methods for selected contact

			trilist.SetSigFalseAction(joinMap.DirectoryRoot.JoinNumber, codec.SetCurrentDirectoryToRoot);

			trilist.SetSigFalseAction(joinMap.DirectoryFolderBack.JoinNumber, codec.GetDirectoryParentFolderContents);

		    if (codec.DirectoryRoot != null)
		    {
				var contactsCount = codec.DirectoryRoot.CurrentDirectoryResults.Where(c => c.ParentFolderId.Equals("root")).ToList().Count;				
                trilist.SetUshort(joinMap.DirectoryRowCount.JoinNumber, (ushort)contactsCount);
				Debug.LogMessage(LogEventLevel.Verbose, this, ">>> contactsCount: {0}", contactsCount);

                var clearBytes = XSigHelpers.ClearOutputs();

                trilist.SetString(joinMap.DirectoryEntries.JoinNumber,
                    Encoding.GetEncoding(XSigEncoding).GetString(clearBytes, 0, clearBytes.Length));
                var directoryXSig = UpdateDirectoryXSig(codec.DirectoryRoot, 
                    codec.CurrentDirectoryResultIsNotDirectoryRoot.BoolValue == false);

                Debug.LogMessage(LogEventLevel.Verbose, this, "Directory XSig Length: {0}", directoryXSig.Length);

                trilist.SetString(joinMap.DirectoryEntries.JoinNumber, directoryXSig);
		    }

			codec.DirectoryResultReturned += (sender, args) =>
			{
				var isRoot = codec.CurrentDirectoryResultIsNotDirectoryRoot.BoolValue == false;
				var argsCount = isRoot 
					? args.Directory.CurrentDirectoryResults.Where(a => a.ParentFolderId.Equals("root")).ToList().Count
					: args.Directory.CurrentDirectoryResults.Count;

				trilist.SetUshort(joinMap.DirectoryRowCount.JoinNumber, (ushort)argsCount);
				Debug.LogMessage(LogEventLevel.Verbose, this, ">>> argsCount: {0}", argsCount);

				var clearBytes = XSigHelpers.ClearOutputs();

				trilist.SetString(joinMap.DirectoryEntries.JoinNumber,
					Encoding.GetEncoding(XSigEncoding).GetString(clearBytes, 0, clearBytes.Length));
                var directoryXSig = UpdateDirectoryXSig(args.Directory, 
                    codec.CurrentDirectoryResultIsNotDirectoryRoot.BoolValue == false);
                Debug.LogMessage(LogEventLevel.Verbose, this, "Directory XSig Length: {0}", directoryXSig.Length);

				trilist.SetString(joinMap.DirectoryEntries.JoinNumber, directoryXSig);
			};
            
            trilist.OnlineStatusChange += (device, args) =>
            {
                if (!args.DeviceOnLine) return;

                var clearBytes = XSigHelpers.ClearOutputs();
                trilist.SetString(joinMap.DirectoryEntries.JoinNumber,
                    Encoding.GetEncoding(XSigEncoding).GetString(clearBytes, 0, clearBytes.Length));
                var directoryXSig = UpdateDirectoryXSig(codec.DirectoryRoot, codec.CurrentDirectoryResultIsNotDirectoryRoot.BoolValue == false);
                trilist.SetString(joinMap.DirectoryEntries.JoinNumber, directoryXSig);
            };
		}

		private void SelectDirectoryEntry(IHasDirectory codec, ushort i, BasicTriList trilist, VideoCodecControllerJoinMap joinMap)
		{
            if (i > codec.CurrentDirectoryResult.CurrentDirectoryResults.Count) return;
		    _selectedDirectoryItem = i == 0 ? null : codec.CurrentDirectoryResult.CurrentDirectoryResults[i - 1];
            trilist.SetUshort(joinMap.DirectorySelectRowFeedback.JoinNumber, i);

            if (_selectedDirectoryItem == null) trilist.SetBool(joinMap.DirectoryEntryIsContact.JoinNumber, false);


			if (_selectedDirectoryItem is DirectoryFolder)
			{
				codec.GetDirectoryFolderContents(_selectedDirectoryItem.FolderId);
                trilist.SetUshort(joinMap.SelectedContactMethodCount.JoinNumber, 0);
                trilist.SetString(joinMap.DirectorySelectedFolderName.JoinNumber, _selectedDirectoryItem.Name);
                trilist.SetString(joinMap.DirectoryEntrySelectedName.JoinNumber, string.Empty);
                trilist.ClearUShortSigAction(joinMap.SelectContactMethod.JoinNumber);
                trilist.ClearBoolSigAction(joinMap.DirectoryDialSelectedLine.JoinNumber);
                trilist.ClearBoolSigAction(joinMap.DirectoryDialSelectedContactMethod.JoinNumber);
			    trilist.SetBool(joinMap.DirectoryEntryIsContact.JoinNumber, false);
                return;
			}

            // not a folder.  Clear this value
            trilist.SetString(joinMap.DirectorySelectedFolderName.JoinNumber, string.Empty);

            var selectedContact = _selectedDirectoryItem as DirectoryContact;

            if (selectedContact != null && selectedContact.ContactMethods.Count >= 1)
		    {
		        trilist.SetBool(joinMap.DirectoryEntryIsContact.JoinNumber, true);
		    }

		    trilist.SetString(joinMap.DirectoryEntrySelectedName.JoinNumber,
		        selectedContact != null ? selectedContact.Name : string.Empty);

		    // Allow auto dial of selected line.  Always dials first contact method
            if (!trilist.GetBool(joinMap.DirectoryDisableAutoDialSelectedLine.JoinNumber))
            {
                var invitableEntry = _selectedDirectoryItem as IInvitableContact;

                if (invitableEntry != null)
                {
                    Dial(invitableEntry);
                    return;
                }

                var entryToDial = _selectedDirectoryItem as DirectoryContact;

                trilist.SetString(joinMap.DirectoryEntrySelectedNumber.JoinNumber, 
                    selectedContact != null ? selectedContact.ContactMethods[0].Number : string.Empty);

                if (entryToDial == null) return;

                Dial(entryToDial.ContactMethods[0].Number);
            }
            else
            {
                // If auto dial is disabled...
                var entryToDial = _selectedDirectoryItem as DirectoryContact;

                if (entryToDial == null)
                {
                    // Clear out values and actions from last selected item
                    trilist.SetUshort(joinMap.SelectedContactMethodCount.JoinNumber, 0);
                    trilist.SetString(joinMap.DirectoryEntrySelectedName.JoinNumber, string.Empty);
                    trilist.ClearUShortSigAction(joinMap.SelectContactMethod.JoinNumber);
                    trilist.ClearBoolSigAction(joinMap.DirectoryDialSelectedLine.JoinNumber);
                    trilist.ClearBoolSigAction(joinMap.DirectoryDialSelectedContactMethod.JoinNumber);
                    return;
                }

                trilist.SetUshort(joinMap.SelectedContactMethodCount.JoinNumber, (ushort)entryToDial.ContactMethods.Count);

                // Update the action to dial the selected contact method
                trilist.SetUShortSigAction(joinMap.SelectContactMethod.JoinNumber, (u) =>
                {
                    if (u < 1 || u > entryToDial.ContactMethods.Count) return;

                    trilist.SetSigFalseAction(joinMap.DirectoryDialSelectedContactMethod.JoinNumber, () => Dial(entryToDial.ContactMethods[u - 1].Number));
                });

                // Sets DirectoryDialSelectedLine join action to dial first contact method
                trilist.SetSigFalseAction(joinMap.DirectoryDialSelectedLine.JoinNumber, () => Dial(entryToDial.ContactMethods[0].Number));

                var clearBytes = XSigHelpers.ClearOutputs();

                trilist.SetString(joinMap.ContactMethods.JoinNumber,
                    Encoding.GetEncoding(XSigEncoding).GetString(clearBytes, 0, clearBytes.Length));
                var contactMethodsXSig = UpdateContactMethodsXSig(entryToDial);

                trilist.SetString(joinMap.ContactMethods.JoinNumber, contactMethodsXSig);
            }
		}

        /// <summary>
        /// Generates the XSig data representing the available contact methods for the selected DirectoryContact
        /// </summary>
        /// <param name="contact"></param>
        /// <returns></returns>
        private string UpdateContactMethodsXSig(DirectoryContact contact)
        {
            const int maxMethods = 10;
            const int maxStrings = 3;
            const int offset = maxStrings;
            var stringIndex = 0;
            var arrayIndex = 0;
            // Create a new token array and set the size to the number of methods times the total number of signals
            var tokenArray = new XSigToken[maxMethods * offset];

            Debug.LogMessage(LogEventLevel.Verbose, this, "Creating XSIG token array with size {0}", maxMethods * offset);

            // TODO: Add code to generate XSig data
            foreach (var method in contact.ContactMethods)
            {
                if (arrayIndex >= maxMethods * offset)
                    break;

                //serials
                tokenArray[arrayIndex + 1] = new XSigSerialToken(stringIndex + 1, method.Number);
                tokenArray[arrayIndex + 2] = new XSigSerialToken(stringIndex + 2, method.ContactMethodId.ToString());
                tokenArray[arrayIndex + 3] = new XSigSerialToken(stringIndex + 3, method.Device.ToString());

				arrayIndex += offset;
				stringIndex += maxStrings;
            }

            while (arrayIndex < maxMethods)
            {
                tokenArray[arrayIndex + 1] = new XSigSerialToken(stringIndex + 1, String.Empty);
                tokenArray[arrayIndex + 2] = new XSigSerialToken(stringIndex + 2, String.Empty);
                tokenArray[arrayIndex + 3] = new XSigSerialToken(stringIndex + 3, String.Empty);

				arrayIndex += offset;
				stringIndex += maxStrings;
            }

            return GetXSigString(tokenArray);
        }

		private string UpdateDirectoryXSig(CodecDirectory directory, bool isRoot)
		{
			var xSigMaxIndex = 1023;
			var tokenArray = new XSigToken[directory.CurrentDirectoryResults.Count > xSigMaxIndex
				? xSigMaxIndex
				: directory.CurrentDirectoryResults.Count];

			Debug.LogMessage(LogEventLevel.Verbose, this, "IsRoot: {0}, Directory Count: {1}, TokenArray.Length: {2}", isRoot, directory.CurrentDirectoryResults.Count, tokenArray.Length);

			var contacts = directory.CurrentDirectoryResults.Count > xSigMaxIndex
				? directory.CurrentDirectoryResults.Take(xSigMaxIndex)
				: directory.CurrentDirectoryResults;

			var contactsToDisplay = isRoot
				? contacts.Where(c => c.ParentFolderId == "root")
				: contacts.Where(c => c.ParentFolderId != "root");

			var counterIndex = 1;
			foreach (var entry in contactsToDisplay)
			{
				var arrayIndex = counterIndex - 1;
				var entryIndex = counterIndex;

				Debug.LogMessage(LogEventLevel.Verbose, this, "Entry{2:0000} Name: {0}, Folder ID: {1}, Type: {3}, ParentFolderId: {4}",
					entry.Name, entry.FolderId, entryIndex, entry.GetType().FullName, entry.ParentFolderId);

				if (entry is DirectoryFolder)
				{
					tokenArray[arrayIndex] = new XSigSerialToken(entryIndex, String.Format("[+] {0}", entry.Name));

					counterIndex++;

					continue;
				}

				tokenArray[arrayIndex] = new XSigSerialToken(entryIndex, entry.Name);

				counterIndex++;
			}

			return GetXSigString(tokenArray);
		}

	    private void LinkVideoCodecCallControlsToApi(BasicTriList trilist, VideoCodecControllerJoinMap joinMap)
		{
			trilist.SetSigFalseAction(joinMap.ManualDial.JoinNumber,
				() => Dial(trilist.StringOutput[joinMap.CurrentDialString.JoinNumber].StringValue));

			//End All calls
			trilist.SetSigFalseAction(joinMap.EndAllCalls.JoinNumber, EndAllCalls);

            //End a specific call, specified by index. Maximum 8 calls supported
            for (int i = 0; i < joinMap.EndCallStart.JoinSpan; i++)
            {
                var callIndex = i;

                trilist.SetSigFalseAction((uint)(joinMap.EndCallStart.JoinNumber + i), () =>
                    {

                        if (callIndex < 0 || callIndex >= ActiveCalls.Count)
                        {
                            Debug.LogMessage(LogEventLevel.Verbose, this, "Cannot end call. No call found at index: {0}", callIndex);
                            return;
                        }

                        var call = ActiveCalls[callIndex];
                        if (call != null)
                        {
                            EndCall(call);
                        }
                        else
                        {
                            Debug.LogMessage(LogEventLevel.Information, this, "[End Call] Unable to find call at index '{0}'", i);
                        }
                    });
            }

			trilist.SetBool(joinMap.HookState.JoinNumber, IsInCall);

			CallStatusChange += (sender, args) =>
			{
				trilist.SetBool(joinMap.HookState.JoinNumber, IsInCall);

				Debug.LogMessage(LogEventLevel.Debug, this, "Call Direction: {0}", args.CallItem.Direction);
				Debug.LogMessage(LogEventLevel.Debug, this, "Call is incoming: {0}", args.CallItem.Direction == eCodecCallDirection.Incoming);
				trilist.SetBool(joinMap.IncomingCall.JoinNumber, args.CallItem.Direction == eCodecCallDirection.Incoming && args.CallItem.Status == eCodecCallStatus.Ringing);

                if (args.CallItem.Direction == eCodecCallDirection.Incoming)
                {
                    trilist.SetSigFalseAction(joinMap.IncomingAnswer.JoinNumber, () => AcceptCall(args.CallItem));
                    trilist.SetSigFalseAction(joinMap.IncomingReject.JoinNumber, () => RejectCall(args.CallItem));
                    trilist.SetString(joinMap.IncomingCallName.JoinNumber, args.CallItem.Name);
                    trilist.SetString(joinMap.IncomingCallNumber.JoinNumber, args.CallItem.Number);
                }
                else
                {
                    trilist.SetString(joinMap.IncomingCallName.JoinNumber, string.Empty);
                    trilist.SetString(joinMap.IncomingCallNumber.JoinNumber, string.Empty);
                }


				trilist.SetString(joinMap.CurrentCallData.JoinNumber, UpdateCallStatusXSig());

				trilist.SetUshort(joinMap.ConnectedCallCount.JoinNumber, (ushort)ActiveCalls.Count);
			};

			var joinCodec = this as IJoinCalls;
			if (joinCodec != null)
			{
					trilist.SetSigFalseAction(joinMap.JoinAllCalls.JoinNumber, () => joinCodec.JoinAllCalls());

					for (int i = 0; i < joinMap.JoinCallStart.JoinSpan; i++)
					{
							trilist.SetSigFalseAction((uint)(joinMap.JoinCallStart.JoinNumber + i), () =>
									{
											var call = ActiveCalls[i];
											if (call != null)
											{
													joinCodec.JoinCall(call);
											} 
											else
											{
													Debug.LogMessage(LogEventLevel.Information, this, "[Join Call] Unable to find call at index '{0}'", i);
											}
									});
					}
			}

			var holdCodec = this as IHasCallHold;
			if (holdCodec != null)
			{
					trilist.SetSigFalseAction(joinMap.HoldAllCalls.JoinNumber, () =>
					{
							foreach (var call in ActiveCalls)
							{
									holdCodec.HoldCall(call);
							}
					});

					for (int i = 0; i < joinMap.HoldCallsStart.JoinSpan; i++)
					{
							var index = i;

							trilist.SetSigFalseAction((uint)(joinMap.HoldCallsStart.JoinNumber + index), () =>
									{
											if (index < 0 || index >= ActiveCalls.Count) return;

											var call = ActiveCalls[index];
											if (call != null)
											{
													holdCodec.HoldCall(call);
											} 
											else
											{
													Debug.LogMessage(LogEventLevel.Information, this, "[Hold Call] Unable to find call at index '{0}'", i);
											}
									});

							trilist.SetSigFalseAction((uint)(joinMap.ResumeCallsStart.JoinNumber + index), () =>
									{
											if (index < 0 || index >= ActiveCalls.Count) return;

											var call = ActiveCalls[index];
											if (call != null)
											{
													holdCodec.ResumeCall(call);
											} 
											else
											{
													Debug.LogMessage(LogEventLevel.Information, this, "[Resume Call] Unable to find call at index '{0}'", i);
											}
									});
					}
			}



			trilist.OnlineStatusChange += (device, args) =>
			{
					if (!args.DeviceOnLine) return;

					// TODO [ ] #983
					Debug.LogMessage(LogEventLevel.Information, this, "LinkVideoCodecCallControlsToApi: device is {0}, IsInCall {1}", args.DeviceOnLine ? "online" : "offline", IsInCall);
					trilist.SetBool(joinMap.HookState.JoinNumber, IsInCall);
					trilist.SetString(joinMap.CurrentCallData.JoinNumber, "\xFC");
					trilist.SetString(joinMap.CurrentCallData.JoinNumber, UpdateCallStatusXSig());
			};
		}

		private string UpdateCallStatusXSig()
		{
			const int maxCalls = 8;
			const int maxStrings = 6;
            const int maxDigitals = 2;
			const int offset = maxStrings + maxDigitals;
			var stringIndex = 0;
			var digitalIndex = maxStrings * maxCalls;
			var arrayIndex = 0;

			var tokenArray = new XSigToken[maxCalls * offset]; //set array size for number of calls * pieces of info

			foreach (var call in ActiveCalls)
			{
				if (arrayIndex >= maxCalls * offset)
					break;
				//digitals
                tokenArray[digitalIndex] = new XSigDigitalToken(digitalIndex + 1, call.IsActiveCall);
                tokenArray[digitalIndex + 1] = new XSigDigitalToken(digitalIndex + 2, call.IsOnHold);

				//serials
                tokenArray[stringIndex] = new XSigSerialToken(stringIndex + 1, call.Name ?? String.Empty);
                tokenArray[stringIndex + 1] = new XSigSerialToken(stringIndex + 2, call.Number ?? String.Empty);
                tokenArray[stringIndex + 2] = new XSigSerialToken(stringIndex + 3, call.Direction.ToString());
                tokenArray[stringIndex + 3] = new XSigSerialToken(stringIndex + 4, call.Type.ToString());
                tokenArray[stringIndex + 4] = new XSigSerialToken(stringIndex + 5, call.Status.ToString());
                if(call.Duration != null)
                {
                    // May need to verify correct string format here
                    var dur = string.Format("{0:c}", call.Duration);
                    tokenArray[arrayIndex + 6] = new XSigSerialToken(stringIndex + 6, dur);
                }

				arrayIndex += offset;
				stringIndex += maxStrings;
                digitalIndex += maxDigitals;
			}
            while (arrayIndex < maxCalls * offset)
			{
				//digitals
                tokenArray[digitalIndex] = new XSigDigitalToken(digitalIndex + 1, false);
                tokenArray[digitalIndex + 1] = new XSigDigitalToken(digitalIndex + 2, false);


                //serials
                tokenArray[stringIndex] = new XSigSerialToken(stringIndex + 1, String.Empty);
                tokenArray[stringIndex + 1] = new XSigSerialToken(stringIndex + 2, String.Empty);
                tokenArray[stringIndex + 2] = new XSigSerialToken(stringIndex + 3, String.Empty);
                tokenArray[stringIndex + 3] = new XSigSerialToken(stringIndex + 4, String.Empty);
                tokenArray[stringIndex + 4] = new XSigSerialToken(stringIndex + 5, String.Empty);
                tokenArray[stringIndex + 5] = new XSigSerialToken(stringIndex + 6, String.Empty);

				arrayIndex += offset;
				stringIndex += maxStrings;
				digitalIndex += maxDigitals;
			}

			return GetXSigString(tokenArray);
		}

		private void LinkVideoCodecDtmfToApi(BasicTriList trilist, VideoCodecControllerJoinMap joinMap)
		{
            trilist.SetSigFalseAction(joinMap.Dtmf0.JoinNumber, () => SendDtmfAction("0", trilist, joinMap));
            trilist.SetSigFalseAction(joinMap.Dtmf1.JoinNumber, () => SendDtmfAction("1", trilist, joinMap));
            trilist.SetSigFalseAction(joinMap.Dtmf2.JoinNumber, () => SendDtmfAction("2", trilist, joinMap));
            trilist.SetSigFalseAction(joinMap.Dtmf3.JoinNumber, () => SendDtmfAction("3", trilist, joinMap));
            trilist.SetSigFalseAction(joinMap.Dtmf4.JoinNumber, () => SendDtmfAction("4", trilist, joinMap));
            trilist.SetSigFalseAction(joinMap.Dtmf5.JoinNumber, () => SendDtmfAction("5", trilist, joinMap));
            trilist.SetSigFalseAction(joinMap.Dtmf6.JoinNumber, () => SendDtmfAction("6", trilist, joinMap));
            trilist.SetSigFalseAction(joinMap.Dtmf7.JoinNumber, () => SendDtmfAction("7", trilist, joinMap));
            trilist.SetSigFalseAction(joinMap.Dtmf8.JoinNumber, () => SendDtmfAction("8", trilist, joinMap));
            trilist.SetSigFalseAction(joinMap.Dtmf9.JoinNumber, () => SendDtmfAction("9", trilist, joinMap));
            trilist.SetSigFalseAction(joinMap.DtmfStar.JoinNumber, () => SendDtmfAction("*", trilist, joinMap));
            trilist.SetSigFalseAction(joinMap.DtmfPound.JoinNumber, () => SendDtmfAction("#", trilist, joinMap));       
		}

        /// <summary>
        /// Sends the specified string as a DTMF command.
        /// Reads the value of the SendDtmfToSpecificCallInstance digital join and SelectCall analog join to determine
        /// Whther to send to a specific call index or to the last connected call
        /// </summary>
        /// <param name="s"></param>
        /// <param name="trilist"></param>
        /// <param name="joinMap"></param>
        private void SendDtmfAction(string s, BasicTriList trilist, VideoCodecControllerJoinMap joinMap)
        {
            if (!trilist.GetBool(joinMap.SendDtmfToSpecificCallIndex.JoinNumber))
            {
                SendDtmf(s);
            }
            else
            {
                var callIndex = trilist.GetUshort(joinMap.SelectCall.JoinNumber);
                if (callIndex > 0 && callIndex <= 8)
                {
                    var call = ActiveCalls[callIndex - 1];
                    if (call != null && call.IsActiveCall)
                    {
                        SendDtmf(s, call);
                    }
                    else
                    {
                        Debug.LogMessage(LogEventLevel.Information, this, "Warning: No call found at index {0} or call is not active.", callIndex);
                    }
                }
                else
                {
                    Debug.LogMessage(LogEventLevel.Information, this, "Warning: Invalid call index specified.  Please use a value of 1-8.");
                }
            }
        }

		private void LinkVideoCodecCameraLayoutsToApi(IHasCodecLayouts codec, BasicTriList trilist, VideoCodecControllerJoinMap joinMap)
		{
			trilist.SetSigFalseAction(joinMap.CameraLayout.JoinNumber, codec.LocalLayoutToggle);

			codec.LocalLayoutFeedback.LinkInputSig(trilist.StringInput[joinMap.CurrentLayoutStringFb.JoinNumber]);
		}

		private void LinkVideoCodecCameraModeToApi(IHasCameraAutoMode codec, BasicTriList trilist, VideoCodecControllerJoinMap joinMap)
		{
			trilist.SetSigFalseAction(joinMap.CameraModeAuto.JoinNumber, codec.CameraAutoModeOn);
			trilist.SetSigFalseAction(joinMap.CameraModeManual.JoinNumber, codec.CameraAutoModeOff);

			codec.CameraAutoModeIsOnFeedback.OutputChange += (o, a) =>
			{
				var offCodec = codec as IHasCameraOff;

				if (offCodec != null)
				{
					if (offCodec.CameraIsOffFeedback.BoolValue)
					{
						trilist.SetBool(joinMap.CameraModeAuto.JoinNumber, false);
						trilist.SetBool(joinMap.CameraModeManual.JoinNumber, false);
						trilist.SetBool(joinMap.CameraModeOff.JoinNumber, true);
						return;
					}

					trilist.SetBool(joinMap.CameraModeAuto.JoinNumber, a.BoolValue);
					trilist.SetBool(joinMap.CameraModeManual.JoinNumber, !a.BoolValue);
					trilist.SetBool(joinMap.CameraModeOff.JoinNumber, false);
					return;
				}

				trilist.SetBool(joinMap.CameraModeAuto.JoinNumber, a.BoolValue);
				trilist.SetBool(joinMap.CameraModeManual.JoinNumber, !a.BoolValue);
				trilist.SetBool(joinMap.CameraModeOff.JoinNumber, false);
			};

			var offModeCodec = codec as IHasCameraOff;

			if (offModeCodec != null)
			{
				if (offModeCodec.CameraIsOffFeedback.BoolValue)
				{
					trilist.SetBool(joinMap.CameraModeAuto.JoinNumber, false);
					trilist.SetBool(joinMap.CameraModeManual.JoinNumber, false);
					trilist.SetBool(joinMap.CameraModeOff.JoinNumber, true);
					return;
				}

				trilist.SetBool(joinMap.CameraModeAuto.JoinNumber, codec.CameraAutoModeIsOnFeedback.BoolValue);
				trilist.SetBool(joinMap.CameraModeManual.JoinNumber, !codec.CameraAutoModeIsOnFeedback.BoolValue);
				trilist.SetBool(joinMap.CameraModeOff.JoinNumber, false);
				return;
			}

			trilist.SetBool(joinMap.CameraModeAuto.JoinNumber, codec.CameraAutoModeIsOnFeedback.BoolValue);
			trilist.SetBool(joinMap.CameraModeManual.JoinNumber, !codec.CameraAutoModeIsOnFeedback.BoolValue);
			trilist.SetBool(joinMap.CameraModeOff.JoinNumber, false);
		}

		private void LinkVideoCodecSelfviewToApi(IHasCodecSelfView codec, BasicTriList trilist,
			VideoCodecControllerJoinMap joinMap)
		{
			trilist.SetSigFalseAction(joinMap.CameraSelfView.JoinNumber, codec.SelfViewModeToggle);

			codec.SelfviewIsOnFeedback.LinkInputSig(trilist.BooleanInput[joinMap.CameraSelfView.JoinNumber]);
		}

		private void LinkVideoCodecCameraToApi(IHasCodecCameras codec, BasicTriList trilist, VideoCodecControllerJoinMap joinMap)
		{
			//Camera PTZ
			trilist.SetBoolSigAction(joinMap.CameraTiltUp.JoinNumber, (b) =>
			{
				if (codec.SelectedCamera == null) return;
				var camera = codec.SelectedCamera as IHasCameraPtzControl;

				if (camera == null) return;

				if (b) camera.TiltUp();
				else camera.TiltStop();
			});

			trilist.SetBoolSigAction(joinMap.CameraTiltDown.JoinNumber, (b) =>
			{
				if (codec.SelectedCamera == null) return;
				var camera = codec.SelectedCamera as IHasCameraPtzControl;

				if (camera == null) return;

				if (b) camera.TiltDown();
				else camera.TiltStop();
			});
			trilist.SetBoolSigAction(joinMap.CameraPanLeft.JoinNumber, (b) =>
			{
				if (codec.SelectedCamera == null) return;
				var camera = codec.SelectedCamera as IHasCameraPtzControl;

				if (camera == null) return;

				if (b) camera.PanLeft();
				else camera.PanStop();
			});
			trilist.SetBoolSigAction(joinMap.CameraPanRight.JoinNumber, (b) =>
			{
				if (codec.SelectedCamera == null) return;
				var camera = codec.SelectedCamera as IHasCameraPtzControl;

				if (camera == null) return;

				if (b) camera.PanRight();
				else camera.PanStop();
			});

			trilist.SetBoolSigAction(joinMap.CameraZoomIn.JoinNumber, (b) =>
			{
				if (codec.SelectedCamera == null) return;
				var camera = codec.SelectedCamera as IHasCameraPtzControl;

				if (camera == null) return;

				if (b) camera.ZoomIn();
				else camera.ZoomStop();
			});

			trilist.SetBoolSigAction(joinMap.CameraZoomOut.JoinNumber, (b) =>
			{
				if (codec.SelectedCamera == null) return;
				var camera = codec.SelectedCamera as IHasCameraPtzControl;

				if (camera == null) return;

				if (b) camera.ZoomOut();
				else camera.ZoomStop();
			});


            trilist.SetBoolSigAction(joinMap.CameraFocusNear.JoinNumber, (b) =>
            {
                if (codec.SelectedCamera == null) return;
                var camera = codec.SelectedCamera as IHasCameraFocusControl;

                if (camera == null) return;

                if (b) camera.FocusNear();
                else camera.FocusStop();
            });

            trilist.SetBoolSigAction(joinMap.CameraFocusFar.JoinNumber, (b) =>
            {
                if (codec.SelectedCamera == null) return;
                var camera = codec.SelectedCamera as IHasCameraFocusControl;

                if (camera == null) return;

                if (b) camera.FocusFar();
                else camera.FocusStop();
            });

            trilist.SetSigFalseAction(joinMap.CameraFocusAuto.JoinNumber, () =>
            {
                if (codec.SelectedCamera == null) return;
                var camera = codec.SelectedCamera as IHasCameraFocusControl;

                if (camera == null) return;

                camera.TriggerAutoFocus();
            });

            // Camera count
            trilist.SetUshort(joinMap.CameraCount.JoinNumber, (ushort)codec.Cameras.Count);

            // Camera names
            for (uint i = 0; i < joinMap.CameraNamesFb.JoinSpan; i++)
            {
                //Check the count first
                if (i < codec.Cameras.Count && codec.Cameras[(int)i] != null)
                {
                    trilist.SetString(joinMap.CameraNamesFb.JoinNumber + i, codec.Cameras[(int)i].Name);
                }
                else
                {
                    trilist.SetString(joinMap.CameraNamesFb.JoinNumber + i, "");
                }
            }

			//Camera Select
			trilist.SetUShortSigAction(joinMap.CameraNumberSelect.JoinNumber, (i) =>
			{
                if (i > 0 && i <= codec.Cameras.Count)
                {
                    codec.SelectCamera(codec.Cameras[i - 1].Key);
                }
                else
                {
                    Debug.LogMessage(LogEventLevel.Information, this, "Unable to select.  No camera found at index {0}", i);
                }
			});

            // Set initial selected camera feedback
            if (codec.SelectedCamera != null)
            {
                trilist.SetUshort(joinMap.CameraNumberSelect.JoinNumber, (ushort)codec.Cameras.FindIndex((c) => c.Key == codec.SelectedCamera.Key));
            }

			codec.CameraSelected += (sender, args) =>
			{
				var i = (ushort)codec.Cameras.FindIndex((c) => c.Key == args.SelectedCamera.Key);

                trilist.SetUshort(joinMap.CameraNumberSelect.JoinNumber, (ushort)(i + 1));

				if (codec is IHasCodecRoomPresets)
				{
					return;
				}

				if (!(args.SelectedCamera is IHasCameraPresets))
				{
					return;
				}

				var cam = args.SelectedCamera as IHasCameraPresets;
				SetCameraPresetNames(cam.Presets);

				(args.SelectedCamera as IHasCameraPresets).PresetsListHasChanged += (o, eventArgs) => SetCameraPresetNames(cam.Presets);

				trilist.SetUShortSigAction(joinMap.CameraPresetSelect.JoinNumber,
						(a) =>
						{
							cam.PresetSelect(a);
							trilist.SetUshort(joinMap.CameraPresetSelect.JoinNumber, a);
						});

				trilist.SetSigFalseAction(joinMap.CameraPresetSave.JoinNumber,
					() =>
					{
						cam.PresetStore(trilist.UShortOutput[joinMap.CameraPresetSelect.JoinNumber].UShortValue,
							String.Empty);
						trilist.PulseBool(joinMap.CameraPresetSave.JoinNumber, 3000);
					});
			};

			if (!(codec is IHasCodecRoomPresets)) return;

			var presetCodec = codec as IHasCodecRoomPresets;

			presetCodec.CodecRoomPresetsListHasChanged +=
				(sender, args) => SetCameraPresetNames(presetCodec.NearEndPresets);

			//Camera Presets
			trilist.SetUShortSigAction(joinMap.CameraPresetSelect.JoinNumber, (i) =>
			{
				presetCodec.CodecRoomPresetSelect(i);
			});


            // Far End Presets
            trilist.SetUShortSigAction(joinMap.FarEndPresetSelect.JoinNumber, (i) =>
            {
                presetCodec.SelectFarEndPreset(i);
            });


			trilist.SetSigFalseAction(joinMap.CameraPresetSave.JoinNumber,
					() =>
					{
						presetCodec.CodecRoomPresetStore(
							trilist.UShortOutput[joinMap.CameraPresetSelect.JoinNumber].UShortValue, String.Empty);
						trilist.PulseBool(joinMap.CameraPresetSave.JoinNumber, 3000);
					});

            trilist.OnlineStatusChange += (device, args) =>
            {
                if (!args.DeviceOnLine) return;

                // TODO [ ] Issue #868
                trilist.SetString(joinMap.CameraPresetNames.JoinNumber, "\xFC");
                SetCameraPresetNames(presetCodec.NearEndPresets);
            };
		}

        // Following fields only used for Bridging
        private int _selectedRecentCallItemIndex;
        private CodecCallHistory.CallHistoryEntry _selectedRecentCallItem;
        private DirectoryItem _selectedDirectoryItem;

        private void LinkVideoCodecCallHistoryToApi(IHasCallHistory codec, BasicTriList trilist, VideoCodecControllerJoinMap joinMap)
        {
            codec.CallHistory.RecentCallsListHasChanged += (o, a) =>
                {
                    UpdateCallHistory(codec, trilist, joinMap);  
                };

            // Selected item action and feedback
            trilist.SetUShortSigAction(joinMap.SelectRecentCallItem.JoinNumber, (u) =>
                {
                    if (u == 0 || u > codec.CallHistory.RecentCalls.Count) 
                    {
                        Debug.LogMessage(LogEventLevel.Verbose, this, "Recent Call History index out of range");
                        return;
                    }

                    _selectedRecentCallItemIndex = (int)(u - 1);
                    trilist.SetUshort(joinMap.SelectRecentCallItem.JoinNumber, u);     

                    var _selectedRecentCallItem = codec.CallHistory.RecentCalls[_selectedRecentCallItemIndex];
                    
                    if (_selectedRecentCallItem != null)
                    {
                        trilist.SetString(joinMap.SelectedRecentCallName.JoinNumber, _selectedRecentCallItem.Name);
                        trilist.SetString(joinMap.SelectedRecentCallNumber.JoinNumber, _selectedRecentCallItem.Number);
                        trilist.SetSigFalseAction(joinMap.RemoveSelectedRecentCallItem.JoinNumber, () => codec.RemoveCallHistoryEntry(_selectedRecentCallItem));
                        trilist.SetSigFalseAction(joinMap.DialSelectedRecentCallItem.JoinNumber, () => this.Dial(_selectedRecentCallItem.Number));
                    }
                    else
                    {
                        trilist.SetString(joinMap.SelectedRecentCallName.JoinNumber, string.Empty);
                        trilist.SetString(joinMap.SelectedRecentCallNumber.JoinNumber, string.Empty);
                        trilist.ClearBoolSigAction(joinMap.RemoveSelectedRecentCallItem.JoinNumber);
                        trilist.ClearBoolSigAction(joinMap.DialSelectedRecentCallItem.JoinNumber);
                    }
                });
        }



        private void UpdateCallHistory(IHasCallHistory codec, BasicTriList trilist, VideoCodecControllerJoinMap joinMap)
        {
            // Clear out selected item
            _selectedRecentCallItemIndex = 0;
            _selectedRecentCallItem = null;
            trilist.SetUshort(joinMap.SelectRecentCallItem.JoinNumber, 0);
            trilist.SetString(joinMap.SelectedRecentCallName.JoinNumber, string.Empty);
            trilist.SetString(joinMap.SelectedRecentCallNumber.JoinNumber, string.Empty);
            trilist.ClearBoolSigAction(joinMap.RemoveSelectedRecentCallItem.JoinNumber);
            //

            trilist.SetUshort(joinMap.RecentCallCount.JoinNumber, (ushort)codec.CallHistory.RecentCalls.Count);

            // Update the call history joins
            var maxItems = joinMap.RecentCallNamesStart.JoinSpan;

            // Create history
            uint index = 0;          
            for (uint i = 0; i < maxItems && i < codec.CallHistory.RecentCalls.Count; i++)
            {
                trilist.SetString(joinMap.RecentCallNamesStart.JoinNumber + i, codec.CallHistory.RecentCalls[(int)i].Name);
                trilist.SetString(joinMap.RecentCallTimesStart.JoinNumber + i, codec.CallHistory.RecentCalls[(int)i].StartTime.ToShortTimeString());
                trilist.SetUshort(joinMap.RecentCallOccurrenceType.JoinNumber + i, (ushort)codec.CallHistory.RecentCalls[(int)i].OccurrenceType);
                //i++;
                index = i;
            }
            
            //foreach(var item in codec.CallHistory.RecentCalls)
            //{
            //    trilist.SetString(joinMap.RecentCallNamesStart.JoinNumber + i, item.Name);
            //    trilist.SetString(joinMap.RecentCallTimesStart.JoinNumber + i, item.StartTime.ToShortTimeString());
            //    trilist.SetUshort(joinMap.RecentCallOccurrenceType.JoinNumber + i, (ushort)item.OccurrenceType);
            //    i++;
            //}

            // Clears existing items 
            for (uint j = index; j < maxItems; j++)
            {
                trilist.SetString(joinMap.RecentCallNamesStart.JoinNumber + j, string.Empty);
                trilist.SetString(joinMap.RecentCallTimesStart.JoinNumber + j, string.Empty);
                trilist.SetUshort(joinMap.RecentCallOccurrenceType.JoinNumber + j, 0);
            }
        }

        private string SetCameraPresetNames(IEnumerable<CodecRoomPreset> presets)
		{
			return SetCameraPresetNames(presets.Select(p => p.Description).ToList());
		}

		private string SetCameraPresetNames(IEnumerable<CameraPreset> presets)
		{
			return SetCameraPresetNames(presets.Select(p => p.Description).ToList());
		}

		private string SetCameraPresetNames(ICollection<string> presets)
		{
			var i = 1; //start index for xsig;

			var tokenArray = new XSigToken[presets.Count];

			foreach (var preset in presets)
			{
				var cameraPreset = new XSigSerialToken(i, preset);
				tokenArray[i - 1] = cameraPreset;
				i++;
			}

			return GetXSigString(tokenArray);
		}

		private string GetXSigString(XSigToken[] tokenArray)
		{
			string returnString;
			using (var s = new MemoryStream())
			{
				using (var tw = new XSigTokenStreamWriter(s, true))
				{
					tw.WriteXSigData(tokenArray);
				}

				var xSig = s.ToArray();

				returnString = Encoding.GetEncoding(XSigEncoding).GetString(xSig, 0, xSig.Length);
			}

			return returnString;
		}

		#endregion
	}


	/// <summary>
	/// Used to track the status of syncronizing the phonebook values when connecting to a codec or refreshing the phonebook info
	/// </summary>
	public class CodecPhonebookSyncState : IKeyed
	{
		private bool _InitialSyncComplete;

		public CodecPhonebookSyncState(string key)
		{
			Key = key;

			CodecDisconnected();
		}

		public bool InitialSyncComplete
		{
			get { return _InitialSyncComplete; }
			private set
			{
				if (value == true)
				{
					var handler = InitialSyncCompleted;
					if (handler != null)
					{
						handler(this, new EventArgs());
					}
				}
				_InitialSyncComplete = value;
			}
		}

		public bool InitialPhonebookFoldersWasReceived { get; private set; }

		public bool NumberOfContactsWasReceived { get; private set; }

		public bool PhonebookRootEntriesWasRecieved { get; private set; }

		public bool PhonebookHasFolders { get; private set; }

		public int NumberOfContacts { get; private set; }

		#region IKeyed Members

		public string Key { get; private set; }

		#endregion

		public event EventHandler<EventArgs> InitialSyncCompleted;

		public void InitialPhonebookFoldersReceived()
		{
			InitialPhonebookFoldersWasReceived = true;

			CheckSyncStatus();
		}

		public void PhonebookRootEntriesReceived()
		{
			PhonebookRootEntriesWasRecieved = true;

			CheckSyncStatus();
		}

		public void SetPhonebookHasFolders(bool value)
		{
			PhonebookHasFolders = value;

			Debug.LogMessage(LogEventLevel.Debug, this, "Phonebook has folders: {0}", PhonebookHasFolders);
		}

		public void SetNumberOfContacts(int contacts)
		{
			NumberOfContacts = contacts;
			NumberOfContactsWasReceived = true;

			Debug.LogMessage(LogEventLevel.Debug, this, "Phonebook contains {0} contacts.", NumberOfContacts);

			CheckSyncStatus();
		}

		public void CodecDisconnected()
		{
			InitialPhonebookFoldersWasReceived = false;
			PhonebookHasFolders = false;
			NumberOfContacts = 0;
			NumberOfContactsWasReceived = false;
		}

		private void CheckSyncStatus()
		{
			if (InitialPhonebookFoldersWasReceived && NumberOfContactsWasReceived && PhonebookRootEntriesWasRecieved)
			{
				InitialSyncComplete = true;
				Debug.LogMessage(LogEventLevel.Debug, this, "Initial Phonebook Sync Complete!");
			}
			else
			{
				InitialSyncComplete = false;
			}
		}
	}
    /// <summary>
    /// Represents a codec command that might need to have a friendly label applied for UI feedback purposes
    /// </summary>
    public class CodecCommandWithLabel
    {
        public string Command { get; private set; }
        public string Label { get; private set; }

        public CodecCommandWithLabel(string command, string label)
        {
            Command = command;
            Label = label;
        }
    }

    

}