refactor: rearrange and add solution for 4-series

src/PepperDash.Essentials.Devices.Common/VideoCodec/CiscoCodec/RoomPresets.cs

@@ -0,0 +1,56 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+
+using PepperDash.Core;
+using PepperDash.Essentials.Core.Presets;
+
+namespace PepperDash.Essentials.Devices.Common.VideoCodec
+{
+    /// <summary>
+    /// Interface for camera presets
+    /// </summary>
+    public interface IHasCodecRoomPresets
+    {
+        event EventHandler<EventArgs> CodecRoomPresetsListHasChanged;
+
+        List<CodecRoomPreset> NearEndPresets { get; }
+
+        List<CodecRoomPreset> FarEndRoomPresets { get; }
+
+        void CodecRoomPresetSelect(int preset);
+
+        void CodecRoomPresetStore(int preset, string description);
+
+        void SelectFarEndPreset(int preset);        
+    }
+
+    public static class RoomPresets
+    {
+        /// <summary>
+        /// Converts non-generic RoomPresets to generic CameraPresets
+        /// </summary>
+        /// <param name="presets"></param>
+        /// <returns></returns>
+        public static List<TDestination> GetGenericPresets<TSource, TDestination>(this List<TSource> presets) where TSource : ConvertiblePreset where TDestination : PresetBase
+        {
+            return
+                presets.Select(preset => preset.ConvertCodecPreset())
+                    .Where(newPreset => newPreset != null)
+                    .Cast<TDestination>()
+                    .ToList();
+        }
+    }
+
+    /// <summary>
+    /// Represents a room preset on a video codec.  Typically stores camera position(s) and video routing.  Can be recalled by Far End if enabled.
+    /// </summary>
+    public class CodecRoomPreset : PresetBase
+    {
+        public CodecRoomPreset(int id, string description, bool def, bool isDef)
+            : base(id, description, def, isDef)
+        {
+
+        }
+    }
+}