19072775d4
- Updated implementations to return a ReadOnlyList around an array (to reduce wasted memory from exposing lists or lazy enumerators around lists). - Protect non-public ISpriteFrame classes by making them inner classes to prevent casting. - Added an AsReadOnly extension method for lists.
102 lines
2.6 KiB
C#
102 lines
2.6 KiB
C#
#region Copyright & License Information
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/*
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* Copyright 2007-2014 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.Drawing;
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using System.IO;
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using OpenRA.Graphics;
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namespace OpenRA.FileFormats
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{
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public class ShpTSReader : ISpriteSource
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{
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class FrameHeader : 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 readonly uint FileOffset;
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public readonly byte Format;
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public FrameHeader(Stream stream, Size frameSize)
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{
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var x = stream.ReadUInt16();
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var y = stream.ReadUInt16();
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var width = stream.ReadUInt16();
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var height = stream.ReadUInt16();
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Offset = new float2(x + 0.5f * (width - frameSize.Width), y + 0.5f * (height - frameSize.Height));
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Size = new Size(width, height);
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FrameSize = frameSize;
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Format = stream.ReadUInt8();
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stream.Position += 11;
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FileOffset = stream.ReadUInt32();
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}
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}
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public IReadOnlyList<ISpriteFrame> Frames { get; private set; }
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public bool CacheWhenLoadingTileset { get { return false; } }
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public ShpTSReader(Stream stream)
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{
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stream.ReadUInt16();
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var width = stream.ReadUInt16();
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var height = stream.ReadUInt16();
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var size = new Size(width, height);
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var frameCount = stream.ReadUInt16();
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var frames = new FrameHeader[frameCount];
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Frames = frames.AsReadOnly();
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for (var i = 0; i < frames.Length; i++)
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frames[i] = new FrameHeader(stream, size);
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for (var i = 0; i < frameCount; i++)
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{
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var f = frames[i];
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if (f.FileOffset == 0)
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continue;
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stream.Position = f.FileOffset;
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var frameSize = f.Size.Width * f.Size.Height;
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// Uncompressed
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if (f.Format == 1 || f.Format == 0)
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f.Data = stream.ReadBytes(frameSize);
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// Uncompressed scanlines
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else if (f.Format == 2)
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{
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f.Data = new byte[frameSize];
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for (var j = 0; j < f.Size.Height; j++)
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{
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var length = stream.ReadUInt16() - 2;
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var offset = f.Size.Width * j;
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stream.ReadBytes(f.Data, offset, length);
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}
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}
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// RLE-zero compressed scanlines
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else if (f.Format == 3)
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{
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f.Data = new byte[frameSize];
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for (var j = 0; j < f.Size.Height; j++)
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{
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var length = stream.ReadUInt16() - 2;
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var offset = f.Size.Width * j;
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Format2.DecodeInto(stream.ReadBytes(length), f.Data, offset);
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}
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}
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}
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}
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}
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} |