From 08f4d8e9a2a285c1d656a9fc6d62a2408a26d859 Mon Sep 17 00:00:00 2001
From: Neil Dorin <ndorin@pepperdash.com>
Date: Wed, 9 Jun 2021 16:57:42 -0600
Subject: [PATCH] Attempts to unpin participant from same screenIndex if one is
 already pinned.

---
 .../VideoCodec/ZoomRoom/ZoomRoom.cs                   | 11 +++++++++++
 1 file changed, 11 insertions(+)

diff --git a/essentials-framework/Essentials Devices Common/Essentials Devices Common/VideoCodec/ZoomRoom/ZoomRoom.cs b/essentials-framework/Essentials Devices Common/Essentials Devices Common/VideoCodec/ZoomRoom/ZoomRoom.cs
index 556c9d85..a6b8c469 100644
--- a/essentials-framework/Essentials Devices Common/Essentials Devices Common/VideoCodec/ZoomRoom/ZoomRoom.cs	
+++ b/essentials-framework/Essentials Devices Common/Essentials Devices Common/VideoCodec/ZoomRoom/ZoomRoom.cs	
@@ -2113,6 +2113,17 @@ namespace PepperDash.Essentials.Devices.Common.VideoCodec.ZoomRoom
 
 		public void PinParticipant(int userId, int screenIndex)
 		{
+            // Try to see if anyone is already pinned to this screen
+            var pinnedParticipant = Participants.CurrentParticipants.FirstOrDefault(p => p.ScreenIndexIsPinnedToFb.Equals(screenIndex));
+
+            if (pinnedParticipant != null)
+            {
+                // If we find a participant already pinned, unpin this one and clear the feedback values
+                UnPinParticipant(pinnedParticipant.UserId);
+                pinnedParticipant.IsPinnedFb = false;
+                pinnedParticipant.ScreenIndexIsPinnedToFb = -1;
+            }
+
 			SendText(string.Format("zCommand Call Pin Id: {0} Enable: on Screen: {1}", userId, screenIndex));
 		}