103 lines
2.3 KiB
C#
103 lines
2.3 KiB
C#
#region Copyright & License Information
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/*
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* Copyright 2007-2016 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. For more information,
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* see COPYING.
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*/
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#endregion
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using System.Collections.Generic;
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using System.Drawing;
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using System.IO;
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using OpenRA.Graphics;
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namespace OpenRA.Mods.D2k.SpriteLoaders
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{
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public class R8Loader : ISpriteLoader
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{
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class R8Frame : ISpriteFrame
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{
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public Size Size { get; private set; }
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public Size FrameSize { get; private set; }
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public float2 Offset { get; private set; }
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public byte[] Data { get; set; }
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public bool DisableExportPadding { get { return true; } }
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public R8Frame(Stream s)
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{
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// Scan forward until we find some data
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var type = s.ReadUInt8();
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while (type == 0)
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type = s.ReadUInt8();
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var width = s.ReadInt32();
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var height = s.ReadInt32();
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var x = s.ReadInt32();
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var y = s.ReadInt32();
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Size = new Size(width, height);
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Offset = new int2(width / 2 - x, height / 2 - y);
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/*var imageOffset = */
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s.ReadInt32();
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var paletteOffset = s.ReadInt32();
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var bpp = s.ReadUInt8();
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if (bpp != 8)
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throw new InvalidDataException("Error: {0} bits per pixel are not supported.".F(bpp));
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var frameHeight = s.ReadUInt8();
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var frameWidth = s.ReadUInt8();
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FrameSize = new Size(frameWidth, frameHeight);
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// Skip alignment byte
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s.ReadUInt8();
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Data = s.ReadBytes(width * height);
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// Ignore palette
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if (type == 1 && paletteOffset != 0)
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s.Seek(520, SeekOrigin.Current);
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}
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}
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bool IsR8(Stream s)
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{
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var start = s.Position;
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// First byte is nonzero
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if (s.ReadUInt8() == 0)
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{
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s.Position = start;
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return false;
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}
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// Check the format of the first frame
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s.Position = start + 25;
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var d = s.ReadUInt8();
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s.Position = start;
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return d == 8;
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}
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public bool TryParseSprite(Stream s, out ISpriteFrame[] frames)
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{
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if (!IsR8(s))
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{
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frames = null;
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return false;
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}
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var start = s.Position;
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var tmp = new List<R8Frame>();
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while (s.Position < s.Length)
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tmp.Add(new R8Frame(s));
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s.Position = start;
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frames = tmp.ToArray();
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return true;
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}
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}
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}
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