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121 lines
4.7 KiB
C#
121 lines
4.7 KiB
C#
//! \file ImageCWL.cs
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//! \date Sat Jun 13 09:36:33 2015
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//! \brief Crowd compressed image format.
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//
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// Copyright (C) 2015 by morkt
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//
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// Permission is hereby granted, free of charge, to any person obtaining a copy
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// of this software and associated documentation files (the "Software"), to
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// deal in the Software without restriction, including without limitation the
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// rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
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// sell copies of the Software, and to permit persons to whom the Software is
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// furnished to do so, subject to the following conditions:
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//
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// The above copyright notice and this permission notice shall be included in
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// all copies or substantial portions of the Software.
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//
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// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
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// FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
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// IN THE SOFTWARE.
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//
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using System;
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using System.ComponentModel.Composition;
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using System.IO;
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using System.Linq;
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using System.Text;
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using System.Windows.Media;
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using GameRes.Compression;
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using GameRes.Utility;
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namespace GameRes.Formats.Crowd
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{
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[Export(typeof(ImageFormat))]
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public class CwdFormat : ImageFormat
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{
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public override string Tag { get { return "CWD"; } }
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public override string Description { get { return "Crowd hi-color bitmap"; } }
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public override uint Signature { get { return 0x20647763u; } } // 'cwd '
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static readonly byte[] SignatureText = Encoding.ASCII.GetBytes ("cwd format - version 1.00 -");
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public override ImageMetaData ReadMetaData (IBinaryStream stream)
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{
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var header = stream.ReadHeader (0x38);
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if (!header.Take (SignatureText.Length).SequenceEqual (SignatureText))
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return null;
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uint key = header[0x34] + 0x259Au;
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return new ImageMetaData
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{
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Width = header.ToUInt32 (0x2c) + key,
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Height = header.ToUInt32 (0x30) + key,
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BPP = 15,
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};
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}
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public override ImageData Read (IBinaryStream stream, ImageMetaData info)
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{
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stream.Position = 0x38;
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int size = (int)info.Width * (int)info.Height * 2;
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var pixels = new byte[size];
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if (pixels.Length != stream.Read (pixels, 0, pixels.Length))
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throw new InvalidFormatException ("Unexpected end of file");
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return ImageData.Create (info, PixelFormats.Bgr555, null, pixels);
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}
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public override void Write (Stream file, ImageData image)
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{
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throw new NotImplementedException ("CwdFormat.Write not implemented");
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}
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}
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[Export(typeof(ImageFormat))]
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public class CwlFormat : CwdFormat
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{
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public override string Tag { get { return "CWL"; } }
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public override string Description { get { return "LZ-compressed Crowd bitmap"; } }
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public override uint Signature { get { return 0x44445A53u; } } // 'SZDD'
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public override ImageMetaData ReadMetaData (IBinaryStream stream)
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{
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stream.Position = 0x0e;
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using (var lz = new LzssReader (stream.AsStream, 100, 0x38)) // extract CWD header
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{
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lz.FrameSize = 0x1000;
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lz.FrameFill = 0x20;
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lz.FrameInitPos = 0x1000 - 0x10;
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lz.Unpack();
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using (var cwd = new BinMemoryStream (lz.Data, stream.Name))
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return base.ReadMetaData (cwd);
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}
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}
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public override ImageData Read (IBinaryStream file, ImageMetaData info)
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{
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if (file.Length > int.MaxValue)
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throw new FileSizeException();
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var header = file.ReadHeader (14);
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int data_length = header.ToInt32 (10);
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int input_length = (int)(file.Length-file.Position);
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using (var lz = new LzssReader (file.AsStream, input_length, data_length))
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{
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lz.FrameSize = 0x1000;
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lz.FrameFill = 0x20;
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lz.FrameInitPos = 0x1000 - 0x10;
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lz.Unpack();
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using (var cwd = new BinMemoryStream (lz.Data, file.Name))
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return base.Read (cwd, info);
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}
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}
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public override void Write (Stream file, ImageData image)
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{
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throw new NotImplementedException ("CwlFormat.Write not implemented");
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}
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}
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}
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