69 lines
1.5 KiB
C#
69 lines
1.5 KiB
C#
#region Copyright & License Information
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/*
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* Copyright 2007-2021 The OpenRA Developers (see AUTHORS)
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* This file is part of OpenRA, which is free software. It is made
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* available to you under the terms of the GNU General Public License
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* as published by the Free Software Foundation, either version 3 of
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* the License, or (at your option) any later version. For more
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* information, see COPYING.
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*/
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#endregion
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using System.IO;
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using System.Linq;
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using OpenRA.Mods.Cnc.FileFormats;
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using OpenRA.Video;
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namespace OpenRA.Mods.Cnc.VideoLoaders
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{
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public class WsaLoader : IVideoLoader
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{
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public bool TryParseVideo(Stream s, bool useFramePadding, out IVideo video)
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{
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video = null;
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if (!IsWsa(s))
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return false;
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video = new WsaVideo(s, useFramePadding);
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return true;
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}
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bool IsWsa(Stream s)
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{
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var start = s.Position;
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var frames = s.ReadUInt16();
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if (frames <= 1) // TODO: find a better way to differentiate .shp icons
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return false;
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var x = s.ReadUInt16();
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var y = s.ReadUInt16();
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var width = s.ReadUInt16();
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var height = s.ReadUInt16();
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if (width <= 0 || height <= 0)
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return false;
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var delta = s.ReadUInt16() + 37;
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var flags = s.ReadUInt16();
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var offsets = new uint[frames + 2];
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for (var i = 0; i < offsets.Length; i++)
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offsets[i] = s.ReadUInt32();
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if (flags == 1)
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{
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var palette = s.ReadBytes(768);
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for (var i = 0; i < offsets.Length; i++)
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offsets[i] += 768;
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}
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s.Position = start;
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return s.Length == offsets.Last();
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}
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}
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}
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