fix: Add method by which to clear MeetingInfo xSig when there are no bookings

1.11.0

essentials-framework/Essentials Devices Common/Essentials Devices Common/Codec/iHasScheduleAwareness.cs

@@ -37,6 +37,9 @@ namespace PepperDash.Essentials.Devices.Common.Codec
 
         private int _meetingWarningMinutes = 5;
 
+        private bool _nullMeeting { get; set; }
+
+
         private Meeting _previousChangedMeeting;
 
         private eMeetingEventChangeType _previousChangeType = eMeetingEventChangeType.Unknown;
@@ -91,6 +94,23 @@ namespace PepperDash.Essentials.Devices.Common.Codec
         /// <param name="meeting"></param>
         private void OnMeetingChange(eMeetingEventChangeType changeType, Meeting meeting)
         {
+            if (meeting == null)
+            {
+                var message = _nullMeeting
+                    ? "*****************OnMeetingChange No meetings to update*****************"
+                    : "*****************OnMeetingChange No meetings present.  Clearing List*****************";
+                Debug.Console(2, message);
+                if (_nullMeeting) return;
+                _nullMeeting = true;
+                var handler = MeetingEventChange;
+                if (handler != null)
+                {
+                    handler(this, new MeetingEventArgs() { ChangeType = eMeetingEventChangeType.Unknown, Meeting = null });
+                }
+                return;
+
+            }
+            _nullMeeting = false;
             Debug.Console(2, "*****************OnMeetingChange.  id: {0} changeType: {1}**********************", meeting.Id, changeType);
             if (changeType != (changeType & meeting.NotifiedChangeTypes))
             {
@@ -119,6 +139,11 @@ namespace PepperDash.Essentials.Devices.Common.Codec
             //  Iterate the meeting list and check if any meeting need to do anything
 
             const double meetingTimeEpsilon = 0.05;
+            if (Meetings.Count < 1)
+            {
+                OnMeetingChange(eMeetingEventChangeType.Unknown, null);
+                return;
+            }
             foreach (var m in Meetings)
             {
                 var changeType = eMeetingEventChangeType.Unknown;

essentials-framework/Essentials Devices Common/Essentials Devices Common/VideoCodec/VideoCodecBase.cs

@@ -831,6 +831,10 @@ namespace PepperDash.Essentials.Devices.Common.VideoCodec
 			codec.CodecSchedule.MeetingsListHasChanged += (sender, args) => UpdateMeetingsList(codec, trilist, joinMap);
 			codec.CodecSchedule.MeetingEventChange += (sender, args) =>
 				{
+				    if (args.Meeting == null)
+				    {
+                        UpdateMeetingsList(codec, trilist, joinMap);
+                    }
 					if (args.ChangeType == eMeetingEventChangeType.MeetingStartWarning)
 					{
 						UpdateMeetingsList(codec, trilist, joinMap);
@@ -909,6 +913,12 @@ namespace PepperDash.Essentials.Devices.Common.VideoCodec
 	        var stringIndex = 0;
 	        var meetingIndex = 0;
 
+            if (meetings.Count == 0)
+            {
+                var clearBytes = XSigHelpers.ClearOutputs();
+                return Encoding.GetEncoding(XSigEncoding).GetString(clearBytes, 0, clearBytes.Length);
+            }
+
 	        var tokenArray = new XSigToken[_meetingsToDisplay * offset];
 	        /* 
 	         * Digitals
@@ -1296,7 +1306,7 @@ namespace PepperDash.Essentials.Devices.Common.VideoCodec
 
 	            for (int i = 0; i < joinMap.JoinCallStart.JoinSpan; i++)
 	            {
-							trilist.SetSigFalseAction((uint)(joinMap.JoinCallStart.JoinNumber + i), () =>
+	                trilist.SetSigFalseAction((uint) (joinMap.JoinCallStart.JoinNumber + i), () =>
 	                {
 	                    var call = ActiveCalls[i];
 	                    if (call != null)
@@ -1382,8 +1392,15 @@ namespace PepperDash.Essentials.Devices.Common.VideoCodec
 			var digitalIndex = maxStrings * maxCalls;
 			var arrayIndex = 0;
 
+		    if (ActiveCalls.Count == 0)
+		    {
+                var clearBytes = XSigHelpers.ClearOutputs();
+                return Encoding.GetEncoding(XSigEncoding).GetString(clearBytes, 0, clearBytes.Length);
+		    }
+
             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)