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implemented SPC compressed textures.
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morkt
176
ArcFormats/Cri/ArcSPC.cs
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176
ArcFormats/Cri/ArcSPC.cs
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//! \file ArcSPC.cs
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//! \date Wed Mar 09 09:01:11 2016
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//! \brief CRI container for multiple textures.
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//
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// Copyright (C) 2016 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.Collections.Generic;
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using System.ComponentModel.Composition;
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using System.IO;
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using GameRes.Compression;
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namespace GameRes.Formats.Cri
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{
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[Export(typeof(ArchiveFormat))]
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public class SpcOpener : ArchiveFormat
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{
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public override string Tag { get { return "SPC/CRI"; } }
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public override string Description { get { return "CRI MiddleWare texture container"; } }
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public override uint Signature { get { return 0; } }
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public override bool IsHierarchic { get { return true; } }
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public override bool CanCreate { get { return false; } }
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public SpcOpener ()
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{
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Extensions = new string[] { "spc" };
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}
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public override ArcFile TryOpen (ArcView file)
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{
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if (!file.Name.EndsWith (".spc", StringComparison.InvariantCultureIgnoreCase))
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return null;
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uint unpacked_size = file.View.ReadUInt32 (0);
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if (unpacked_size <= 0x20 || unpacked_size > 0x5000000)
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return null;
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var backend = file.CreateStream();
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backend.Position = 4;
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var lzss = new LzssStream (backend);
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var input = new SeekableStream (lzss);
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try
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{
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var base_name = Path.GetFileNameWithoutExtension (file.Name);
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using (var spc = new XtxIndexBuilder (input, base_name))
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{
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spc.ReadIndex (0);
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if (spc.Dir.Count > 0)
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return new SpcArchive (file, this, spc.Dir, input);
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else
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throw new InvalidFormatException();
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}
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}
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catch
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{
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input.Dispose();
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throw;
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}
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}
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public override Stream OpenEntry (ArcFile arc, Entry entry)
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{
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return new StreamRegion (((SpcArchive)arc).Source, entry.Offset, entry.Size, true);
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}
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}
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internal sealed class XtxIndexBuilder : IDisposable
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{
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BinaryReader m_input;
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string m_base_name;
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List<Entry> m_dir = new List<Entry>();
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int m_subdir_count = 0;
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public List<Entry> Dir { get { return m_dir; } }
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public XtxIndexBuilder (Stream input, string base_name)
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{
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m_input = new ArcView.Reader (input);
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m_base_name = base_name;
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}
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public void ReadIndex (uint base_offset, string dir_name = "")
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{
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m_input.BaseStream.Position = base_offset;
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uint first_offset = m_input.ReadUInt32();
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if (0 != (first_offset & 0xF))
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throw new InvalidFormatException();
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int count = (int)(first_offset / 0x10u);
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m_input.BaseStream.Position = base_offset;
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var subdir = new List<Entry> (count);
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for (int i = 0; i < count; ++i)
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{
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uint offset = m_input.ReadUInt32();
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uint size = m_input.ReadUInt32();
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if (offset < first_offset || size < 0x20)
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throw new InvalidFormatException();
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m_input.BaseStream.Seek (8, SeekOrigin.Current);
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var entry = new Entry { Offset = base_offset + offset, Size = size };
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subdir.Add (entry);
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}
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foreach (var entry in subdir)
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{
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m_input.BaseStream.Position = entry.Offset;
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uint signature = m_input.ReadUInt32();
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if (0x787478 == signature) // 'xtx'
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{
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var file_name = string.Format ("{0}#{1:D4}.xtx", m_base_name, m_dir.Count);
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entry.Name = Path.Combine (dir_name, file_name);
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entry.Type = "image";
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m_dir.Add (entry);
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}
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else
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{
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var subdir_name = m_subdir_count++.ToString ("D4");
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ReadIndex ((uint)entry.Offset, Path.Combine (dir_name, subdir_name));
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}
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}
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}
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#region IDisposable Members
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bool _disposed = false;
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public void Dispose ()
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{
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if (!_disposed)
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{
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m_input.Dispose();
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_disposed = true;
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}
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}
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#endregion
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}
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internal class SpcArchive : ArcFile
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{
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public readonly Stream Source;
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public SpcArchive (ArcView arc, ArchiveFormat impl, ICollection<Entry> dir, Stream input)
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: base (arc, impl, dir)
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{
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Source = input;
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}
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#region IDisposable Members
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bool _spc_disposed = false;
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protected override void Dispose (bool disposing)
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{
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if (_spc_disposed)
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return;
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if (disposing)
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{
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Source.Dispose();
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}
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_spc_disposed = true;
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base.Dispose (disposing);
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}
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#endregion
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}
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}
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