82 lines
2.0 KiB
C#
82 lines
2.0 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.Collections.Generic;
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using System.IO;
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using System.Linq;
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using OpenRA.Graphics;
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using OpenRA.Primitives;
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using Pfim;
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namespace OpenRA.Mods.Common.SpriteLoaders
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{
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public class DdsLoader : ISpriteLoader
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{
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public static bool IsDds(Stream s)
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{
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var start = s.Position;
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var isDds = s.ReadUInt32() == 0x20534444;
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s.Position = start;
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return isDds;
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}
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public bool TryParseSprite(Stream s, string filename, out ISpriteFrame[] frames, out TypeDictionary metadata)
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{
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metadata = null;
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if (!IsDds(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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frames = new DdsSprite(s).Frames.ToArray();
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return true;
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}
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}
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public class DdsSprite
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{
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class DdsFrame : ISpriteFrame
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{
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public SpriteFrameType Type { get; }
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public Size Size { get; }
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public Size FrameSize => Size;
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public float2 Offset => float2.Zero;
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public byte[] Data { get; }
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public bool DisableExportPadding => false;
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public DdsFrame(Stream stream)
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{
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using (var dds = Dds.Create(stream, new PfimConfig()))
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{
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Size = new Size(dds.Width, dds.Height);
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Data = dds.Data;
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switch (dds.Format)
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{
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// SpriteFrameType refers to the channel byte order, which is reversed from the little-endian bit order
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case ImageFormat.Rgba32: Type = SpriteFrameType.Bgra32; break;
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case ImageFormat.Rgb24: Type = SpriteFrameType.Bgr24; break;
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default: throw new InvalidDataException($"Unhandled ImageFormat {dds.Format}");
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}
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}
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}
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}
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public IReadOnlyList<ISpriteFrame> Frames { get; }
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public DdsSprite(Stream stream)
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{
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Frames = new ISpriteFrame[] { new DdsFrame(stream) };
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}
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}
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}
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