mirror of
https://github.com/crskycode/GARbro.git
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226 lines
8.7 KiB
C#
226 lines
8.7 KiB
C#
//! \file ArcDAT.cs
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//! \date 2018 Sep 20
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//! \brief Lazycrew resource archive.
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//
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// Copyright (C) 2018 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 System.Text.RegularExpressions;
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using GameRes.Utility;
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// [031024][Lazycrew] Sister Mermaid
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// [020927][Ga-Bang] Sorairo Memories
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namespace GameRes.Formats.Lazycrew
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{
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internal class DirEntry
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{
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public string Name;
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public int Offset;
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public int Count;
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}
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[Export(typeof(ArchiveFormat))]
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public class DatOpener : ArchiveFormat
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{
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public override string Tag { get { return "DAT/LAZYCREW"; } }
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public override string Description { get { return "Lazycrew resource archive"; } }
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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 CanWrite { get { return false; } }
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public DatOpener ()
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{
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Extensions = new string[] { "dat", "" };
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Signatures = new uint[] { 2, 0 };
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}
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static readonly Regex NamePattern = new Regex (@"^(?:(?<num>0\d\d\d)\.dat|data(?<num>\d+)?)$", RegexOptions.IgnoreCase);
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const uint DefaultPcmKey = 0x4B5AB4A5;
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public override ArcFile TryOpen (ArcView file)
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{
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var name = Path.GetFileName (file.Name);
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if (!NamePattern.IsMatch (name))
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return null;
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var match = NamePattern.Match (name);
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int name_id = 1;
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var num_str = match.Groups["num"].Value;
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if (!string.IsNullOrEmpty (num_str))
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name_id = Int32.Parse (num_str);
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if (name_id < 1)
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return null;
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ArcView index = file;
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try
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{
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if (name_id != 1)
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{
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string index_name;
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if (file.Name.HasExtension (".dat"))
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index_name = VFS.ChangeFileName (file.Name, "0001.dat");
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else
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index_name = VFS.ChangeFileName (file.Name, "data");
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if (!VFS.FileExists (index_name))
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return null;
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index = VFS.OpenView (index_name);
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}
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var dir = ReadIndex (index, name_id, file.MaxOffset);
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if (null == dir || 0 == dir.Count)
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return null;
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return new ArcFile (file, this, dir);
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}
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finally
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{
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if (index != file)
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index.Dispose();
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}
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}
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List<Entry> ReadIndex (ArcView index, int arc_id, long arc_length)
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{
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int dir_count = index.View.ReadInt32 (0);
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if (dir_count <= 0 || dir_count > 20)
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return null;
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var dir_list = new List<DirEntry> (dir_count);
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int dir_offset = 4;
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int first_offset = dir_count * 0x10 + 4;
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for (int i = 0; i < dir_count; ++i)
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{
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var dir_entry = new DirEntry {
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Name = index.View.ReadString (dir_offset, 8),
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Offset = index.View.ReadInt32 (dir_offset+8),
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Count = index.View.ReadInt32 (dir_offset+12),
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};
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if (dir_entry.Offset < first_offset || dir_entry.Offset >= index.MaxOffset
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|| !IsSaneCount (dir_entry.Count))
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return null;
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dir_list.Add (dir_entry);
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dir_offset += 16;
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}
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var file_list = new List<Entry>();
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foreach (var dir in dir_list)
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{
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dir_offset = dir.Offset;
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string type = "";
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if (dir.Name.Equals ("image", StringComparison.OrdinalIgnoreCase))
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type = "image";
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else if (dir.Name.Equals ("sound", StringComparison.OrdinalIgnoreCase))
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type = "audio";
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for (int i = 0; i < dir.Count; ++i)
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{
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int id = index.View.ReadUInt16 (dir_offset);
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if (id == arc_id)
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{
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var entry = new Entry {
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Name = Path.Combine (dir.Name, i.ToString ("D5")),
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Type = type,
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Offset = index.View.ReadUInt32 (dir_offset+2),
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Size = index.View.ReadUInt32 (dir_offset+6),
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};
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if (!entry.CheckPlacement (arc_length))
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return null;
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file_list.Add (entry);
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}
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dir_offset += 10;
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}
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}
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return file_list;
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}
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public override Stream OpenEntry (ArcFile arc, Entry entry)
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{
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if (entry.Type == "audio")
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{
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uint signature = arc.File.View.ReadUInt32 (entry.Offset);
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if (signature == 0x10000 || signature == 0)
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return OpenAudio (arc, entry);
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else if (signature == 1 || signature == 0x10001)
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return arc.File.CreateStream (entry.Offset+4, entry.Size-4);
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}
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return base.OpenEntry (arc, entry);
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}
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Stream OpenAudio (ArcFile arc, Entry entry)
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{
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var riff_header = new byte[0x2C];
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LittleEndian.Pack (AudioFormat.Wav.Signature, riff_header, 0);
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LittleEndian.Pack (0x45564157, riff_header, 8); // 'WAVE'
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LittleEndian.Pack (0x20746d66, riff_header, 12); // 'fmt '
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LittleEndian.Pack (0x10, riff_header, 16);
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arc.File.View.Read (entry.Offset+4, riff_header, 20, 0x10);
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LittleEndian.Pack (0x61746164, riff_header, 0x24); // 'data'
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uint data_size = arc.File.View.ReadUInt32 (entry.Offset+0x16);
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LittleEndian.Pack (data_size + 0x24u, riff_header, 4);
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LittleEndian.Pack (data_size, riff_header, 0x28);
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var pcm = arc.File.View.ReadBytes (entry.Offset+0x1A, data_size);
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DecryptData (pcm, DefaultPcmKey);
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var riff_data = new MemoryStream (pcm);
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return new PrefixStream (riff_header, riff_data);
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}
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public override IImageDecoder OpenImage (ArcFile arc, Entry entry)
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{
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var input = arc.OpenBinaryEntry (entry);
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int fmt = (int)input.Signature & 0xFFFF;
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if (fmt > 4)
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return ImageFormatDecoder.Create (input);
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var header = input.ReadHeader (14);
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input.Position = 0;
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int hpos = 2;
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if (1 == fmt || 3 == fmt)
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hpos = 8;
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int cmp = header.ToUInt16 (hpos);
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int bpp = 0;
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switch (cmp & 0xFF)
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{
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case 2: bpp = 4; break;
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case 3: bpp = 8; break;
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case 5: bpp = 24; break;
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default:
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return ImageFormatDecoder.Create (input);
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}
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var info = new LcImageMetaData {
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Width = header.ToUInt16 (hpos+2),
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Height = header.ToUInt16 (hpos+4),
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BPP = bpp,
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Format = fmt,
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Compression = cmp,
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DataOffset = hpos + 6,
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};
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return new LcImageDecoder (input, info);
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}
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void DecryptData (byte[] data, uint key)
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{
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for (int i = 0; i < data.Length; ++i)
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{
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data[i] ^= (byte)key;
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key = data[i] ^ ((key << 9) | (key >> 23) & 0x1F0);
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}
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}
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}
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}
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