Add a generic video player widget.

OpenRA.Mods.Cnc/VideoLoaders/VqaLoader.cs

@@ -0,0 +1,58 @@
+#region Copyright & License Information
+/*
+ * Copyright 2007-2020 The OpenRA Developers (see AUTHORS)
+ * This file is part of OpenRA, which is free software. It is made
+ * available to you under the terms of the GNU General Public License
+ * as published by the Free Software Foundation, either version 3 of
+ * the License, or (at your option) any later version. For more
+ * information, see COPYING.
+ */
+#endregion
+
+using System.IO;
+using OpenRA.Mods.Cnc.FileFormats;
+using OpenRA.Video;
+
+namespace OpenRA.Mods.Cnc.VideoLoaders
+{
+	public class VqaLoader : IVideoLoader
+	{
+		public bool TryParseVideo(Stream s, out IVideo video)
+		{
+			video = null;
+
+			if (!IsWestwoodVqa(s))
+				return false;
+
+			video = new VqaReader(s);
+			return true;
+		}
+
+		bool IsWestwoodVqa(Stream s)
+		{
+			var start = s.Position;
+
+			if (s.ReadASCII(4) != "FORM")
+			{
+				s.Position = start;
+				return false;
+			}
+
+			var length = s.ReadUInt32();
+			if (length == 0)
+			{
+				s.Position = start;
+				return false;
+			}
+
+			if (s.ReadASCII(4) != "WVQA")
+			{
+				s.Position = start;
+				return false;
+			}
+
+			s.Position = start;
+			return true;
+		}
+	}
+}