GARbro-mirror/ArcFormats/Cri/ArcSPC.cs

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2016-03-09 14:57:50 +08:00
//! \file ArcSPC.cs
//! \date Wed Mar 09 09:01:11 2016
//! \brief CRI container for multiple textures.
//
// Copyright (C) 2016 by morkt
//
// Permission is hereby granted, free of charge, to any person obtaining a copy
// of this software and associated documentation files (the "Software"), to
// deal in the Software without restriction, including without limitation the
// rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
// sell copies of the Software, and to permit persons to whom the Software is
// furnished to do so, subject to the following conditions:
//
// The above copyright notice and this permission notice shall be included in
// all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
// FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
// IN THE SOFTWARE.
//
using System;
using System.Collections.Generic;
using System.ComponentModel.Composition;
using System.IO;
using GameRes.Compression;
namespace GameRes.Formats.Cri
{
[Export(typeof(ArchiveFormat))]
public class SpcOpener : ArchiveFormat
{
public override string Tag { get { return "SPC/CRI"; } }
public override string Description { get { return "CRI MiddleWare texture container"; } }
public override uint Signature { get { return 0; } }
public override bool IsHierarchic { get { return true; } }
public override bool CanCreate { get { return false; } }
public SpcOpener ()
{
Extensions = new string[] { "spc" };
}
public override ArcFile TryOpen (ArcView file)
{
if (!file.Name.EndsWith (".spc", StringComparison.InvariantCultureIgnoreCase))
return null;
uint unpacked_size = file.View.ReadUInt32 (0);
if (unpacked_size <= 0x20 || unpacked_size > 0x5000000)
return null;
var backend = file.CreateStream();
backend.Position = 4;
var lzss = new LzssStream (backend);
var input = new SeekableStream (lzss);
try
{
var base_name = Path.GetFileNameWithoutExtension (file.Name);
using (var spc = new XtxIndexBuilder (input, base_name))
{
spc.ReadIndex (0);
if (spc.Dir.Count > 0)
return new SpcArchive (file, this, spc.Dir, input);
else
throw new InvalidFormatException();
}
}
catch
{
input.Dispose();
throw;
}
}
public override Stream OpenEntry (ArcFile arc, Entry entry)
{
return new StreamRegion (((SpcArchive)arc).Source, entry.Offset, entry.Size, true);
}
}
internal sealed class XtxIndexBuilder : IDisposable
{
BinaryReader m_input;
string m_base_name;
List<Entry> m_dir = new List<Entry>();
int m_subdir_count = 0;
public List<Entry> Dir { get { return m_dir; } }
public XtxIndexBuilder (Stream input, string base_name)
{
m_input = new ArcView.Reader (input);
m_base_name = base_name;
}
public void ReadIndex (uint base_offset, string dir_name = "")
{
m_input.BaseStream.Position = base_offset;
uint first_offset = m_input.ReadUInt32();
if (0 != (first_offset & 0xF))
throw new InvalidFormatException();
int count = (int)(first_offset / 0x10u);
m_input.BaseStream.Position = base_offset;
var subdir = new List<Entry> (count);
for (int i = 0; i < count; ++i)
{
uint offset = m_input.ReadUInt32();
uint size = m_input.ReadUInt32();
if (offset < first_offset || size < 0x20)
throw new InvalidFormatException();
m_input.BaseStream.Seek (8, SeekOrigin.Current);
var entry = new Entry { Offset = base_offset + offset, Size = size };
subdir.Add (entry);
}
foreach (var entry in subdir)
{
m_input.BaseStream.Position = entry.Offset;
uint signature = m_input.ReadUInt32();
if (0x787478 == signature) // 'xtx'
{
var file_name = string.Format ("{0}#{1:D4}.xtx", m_base_name, m_dir.Count);
entry.Name = Path.Combine (dir_name, file_name);
entry.Type = "image";
m_dir.Add (entry);
}
else
{
var subdir_name = m_subdir_count++.ToString ("D4");
ReadIndex ((uint)entry.Offset, Path.Combine (dir_name, subdir_name));
}
}
}
#region IDisposable Members
bool _disposed = false;
public void Dispose ()
{
if (!_disposed)
{
m_input.Dispose();
_disposed = true;
}
}
#endregion
}
internal class SpcArchive : ArcFile
{
public readonly Stream Source;
public SpcArchive (ArcView arc, ArchiveFormat impl, ICollection<Entry> dir, Stream input)
: base (arc, impl, dir)
{
Source = input;
}
#region IDisposable Members
bool _spc_disposed = false;
protected override void Dispose (bool disposing)
{
if (_spc_disposed)
return;
if (disposing)
{
Source.Dispose();
}
_spc_disposed = true;
base.Dispose (disposing);
}
#endregion
}
}