mirror of
https://github.com/crskycode/GARbro.git
synced 2024-12-23 19:34:15 +08:00
added ONScripter (NSA/SAR) archives reader.
This commit is contained in:
morkt
parent
ef79d52e02
commit
aab7efaa1f
@ -57,6 +57,7 @@
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<Compile Include="ArcAMI.cs" />
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<Compile Include="ArcINT.cs" />
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<Compile Include="ArcNPA.cs" />
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<Compile Include="ArcNSA.cs" />
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<Compile Include="ArcSteinsGate.cs" />
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<Compile Include="ArcXFL.cs" />
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<Compile Include="ArcXP3.cs" />
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390
ArcFormats/ArcNSA.cs
Normal file
390
ArcFormats/ArcNSA.cs
Normal file
@ -0,0 +1,390 @@
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//! \file ArcNSA.cs
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//! \date Sun Jul 27 11:25:46 2014
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//! \brief ONScripter NSA/SAR archives implementation.
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//
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using System;
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using System.IO;
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using System.Collections.Generic;
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using System.ComponentModel.Composition;
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using GameRes.Formats.Strings;
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using GameRes.Utility;
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namespace GameRes.Formats.ONScripter
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{
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public class NsaEntry : PackedEntry
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{
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public Compression CompressionType { get; set; }
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}
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public enum Compression
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{
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Unknown = 256,
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None = 0,
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Spb = 1,
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Lzss = 2,
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Nbz = 4,
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}
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[Export(typeof(ArchiveFormat))]
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public class NsaOpener : ArchiveFormat
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{
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public override string Tag { get { return "NSA"; } }
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public override string Description { get { return arcStrings.NSADescription; } }
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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 ArcFile TryOpen (ArcView file)
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{
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int num_of_files = Binary.BigEndian (file.View.ReadInt16 (0));
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if (num_of_files <= 0)
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return null;
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uint base_offset = Binary.BigEndian (file.View.ReadUInt32 (2));
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if (base_offset >= file.MaxOffset || base_offset < 15 * (uint)num_of_files)
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return null;
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uint cur_offset = 6;
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var dir = new List<Entry>();
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for (int i = 0; i < num_of_files; ++i)
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{
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if (base_offset - cur_offset < 15)
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return null;
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int name_len;
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byte[] name_buffer = ReadName (file, cur_offset, base_offset-cur_offset, out name_len);
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if (0 == name_len || base_offset-cur_offset == name_len)
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return null;
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cur_offset += (uint)(name_len + 1);
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if (base_offset - cur_offset < 13)
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return null;
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var entry = new NsaEntry
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{
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Name = Encodings.cp932.GetString (name_buffer, 0, name_len),
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};
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byte compression_type = file.View.ReadByte (cur_offset);
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entry.Type = FormatCatalog.Instance.GetTypeFromName (entry.Name);
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entry.Offset = Binary.BigEndian (file.View.ReadUInt32 (cur_offset+1)) + (long)base_offset;
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entry.Size = Binary.BigEndian (file.View.ReadUInt32 (cur_offset+5));
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entry.UnpackedSize = Binary.BigEndian (file.View.ReadUInt32 (cur_offset+9));
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switch (compression_type)
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{
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case 0: entry.CompressionType = Compression.None; break;
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case 1: entry.CompressionType = Compression.Spb; break;
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case 2: entry.CompressionType = Compression.Lzss; break;
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case 4: entry.CompressionType = Compression.Nbz; break;
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default: entry.CompressionType = Compression.Unknown; break;
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}
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cur_offset += 13;
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dir.Add (entry);
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}
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return new ArcFile (file, this, dir);
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}
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public override Stream OpenEntry (ArcFile arc, Entry entry)
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{
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var nsa_entry = entry as NsaEntry;
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if (null != nsa_entry
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&& nsa_entry.CompressionType == Compression.Lzss
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&& nsa_entry.CompressionType == Compression.Spb)
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{
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using (var input = arc.File.CreateStream (nsa_entry.Offset, nsa_entry.Size))
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{
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var decoder = new Unpacker (input, nsa_entry.UnpackedSize);
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switch (nsa_entry.CompressionType)
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{
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case Compression.Lzss: return decoder.LzssDecodedStream();
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case Compression.Spb: return decoder.SpbDecodedStream();
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}
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}
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}
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return arc.File.CreateStream (entry.Offset, entry.Size);
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}
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protected static byte[] ReadName (ArcView file, uint offset, uint limit, out int name_len)
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{
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byte[] name_buffer = new byte[40];
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for (name_len = 0; name_len < limit; ++name_len)
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{
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byte b = file.View.ReadByte (offset+name_len);
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if (0 == b)
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break;
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if (name_buffer.Length == name_len)
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{
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byte[] new_buffer = new byte[checked(name_len/2*3)];
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Array.Copy (name_buffer, new_buffer, name_len);
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name_buffer = new_buffer;
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}
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name_buffer[name_len] = b;
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}
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return name_buffer;
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}
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}
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[Export(typeof(ArchiveFormat))]
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public class SarOpener : NsaOpener
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{
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public override string Tag { get { return "SAR"; } }
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public override ArcFile TryOpen (ArcView file)
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{
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int num_of_files = Binary.BigEndian (file.View.ReadInt16 (0));
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if (num_of_files <= 0)
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return null;
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uint base_offset = Binary.BigEndian (file.View.ReadUInt32 (2));
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if (base_offset >= file.MaxOffset || base_offset < 10 * (uint)num_of_files)
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return null;
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uint cur_offset = 6;
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var dir = new List<Entry>();
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for (int i = 0; i < num_of_files; ++i)
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{
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if (base_offset - cur_offset < 10)
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return null;
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int name_len;
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byte[] name_buffer = ReadName (file, cur_offset, base_offset-cur_offset, out name_len);
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if (0 == name_len || base_offset-cur_offset == name_len)
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return null;
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cur_offset += (uint)(name_len + 1);
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if (base_offset - cur_offset < 8)
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return null;
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var entry = new NsaEntry
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{
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Name = Encodings.cp932.GetString (name_buffer, 0, name_len),
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};
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entry.Type = FormatCatalog.Instance.GetTypeFromName (entry.Name);
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entry.Offset = Binary.BigEndian (file.View.ReadUInt32 (cur_offset)) + (long)base_offset;
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entry.Size = Binary.BigEndian (file.View.ReadUInt32 (cur_offset+4));
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entry.UnpackedSize = entry.Size;
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entry.CompressionType = Compression.None;
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string ext = Path.GetExtension (entry.Name);
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if (".nbz".Equals (ext, StringComparison.OrdinalIgnoreCase))
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entry.CompressionType = Compression.Nbz;
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cur_offset += 8;
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dir.Add (entry);
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}
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return new ArcFile (file, this, dir);
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}
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}
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internal class Unpacker
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{
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private Stream m_input;
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private MemoryStream m_output;
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private uint m_unpacked_size;
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private byte[] m_read_buf = new byte[4096];
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public Unpacker (Stream input, uint unpacked_size)
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{
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m_input = input;
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m_output = new MemoryStream ((int)unpacked_size);
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m_unpacked_size = unpacked_size;
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}
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public Stream LzssDecodedStream ()
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{
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uint size = DecodeLZSS();
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if (size != m_unpacked_size)
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System.Diagnostics.Trace.WriteLine ("Invalid compressed data", "LzssDecoder");
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m_output.Position = 0;
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return m_output;
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}
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public Stream SpbDecodedStream ()
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{
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uint size = DecodeSPB();
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if (size != m_unpacked_size)
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System.Diagnostics.Trace.WriteLine ("Invalid compressed data", "SpbDecoder");
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m_output.Position = 0;
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return m_output;
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}
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const int EI = 8;
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const int EJ = 4;
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const int P = 1; /* If match length <= P then output one character */
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const int N = (1 << EI); /* buffer size */
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const int F = ((1 << EJ) + P); /* lookahead buffer size */
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private int m_getbit_mask;
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private uint m_getbit_len;
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private uint m_getbit_count;
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uint DecodeLZSS ()
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{
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uint count = 0;
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m_getbit_mask = 0;
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m_getbit_len = m_getbit_count = 0;
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byte[] decomp_buffer = new byte[N*2];
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int r = N - F;
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int c;
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while (count < m_unpacked_size)
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{
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if (0 != GetBits (1))
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{
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c = GetBits (8);
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if (-1 == c)
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break;
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m_output.WriteByte ((byte)c);
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++count;
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decomp_buffer[r++] = (byte)c;
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r &= (N - 1);
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}
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else
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{
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int i = GetBits (EI);
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if (-1 == i)
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break;
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int j = GetBits (EJ);
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if (-1 == j)
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break;
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for (int k = 0; k <= j + 1; k++)
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{
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c = decomp_buffer[(i + k) & (N - 1)];
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m_output.WriteByte ((byte)c);
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++count;
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decomp_buffer[r++] = (byte)c;
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r &= (N - 1);
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}
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}
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}
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return count;
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}
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uint DecodeSPB ()
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{
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m_getbit_mask = 0;
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m_getbit_len = m_getbit_count = 0;
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uint width = (uint)(m_input.ReadByte() << 8);
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width |= (uint)m_input.ReadByte();
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uint height = (uint)(m_input.ReadByte() << 8);
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height |= (uint)m_input.ReadByte();
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uint width_pad = (4 - width * 3 % 4) % 4;
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int stride = (int)(width * 3 + width_pad);
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uint total_size = (uint)stride * height + 54;
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m_output.SetLength (total_size);
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/* ---------------------------------------- */
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/* Write header */
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m_output.WriteByte ((byte)'B');
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m_output.WriteByte ((byte)'M');
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m_output.WriteByte ((byte)(total_size & 0xff));
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m_output.WriteByte ((byte)((total_size >> 8) & 0xff));
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m_output.WriteByte ((byte)((total_size >> 16) & 0xff));
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m_output.WriteByte ((byte)((total_size >> 24) & 0xff));
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m_output.Seek (4, SeekOrigin.Current);
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m_output.WriteByte (54); // offset to the body
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m_output.Seek (3, SeekOrigin.Current);
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m_output.WriteByte (40); // header size
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m_output.Seek (3, SeekOrigin.Current);
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m_output.WriteByte ((byte)(width & 0xff));
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m_output.WriteByte ((byte)((width >> 8) & 0xff));
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m_output.Seek (2, SeekOrigin.Current);
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m_output.WriteByte ((byte)(height & 0xff));
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m_output.WriteByte ((byte)((height >> 8) & 0xff));
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m_output.Seek (2, SeekOrigin.Current);
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m_output.WriteByte (1); // the number of the plane
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m_output.WriteByte (0);
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m_output.WriteByte (24); // bpp
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m_output.Seek (5, SeekOrigin.Current);
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m_output.WriteByte ((byte)(total_size - 54)); // size of the body
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m_output.Seek (54, SeekOrigin.Begin);
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byte[] buf = m_output.GetBuffer();
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byte[] decomp_buffer = new byte[width*height*4];
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for (int i = 0; i < 3; i++)
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{
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uint count = 0;
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int c = GetBits (8);
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if (-1 == c)
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break;
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decomp_buffer[count++] = (byte)c;
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while (count < width * height)
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{
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int n = GetBits (3);
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if (0 == n)
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{
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decomp_buffer[count++] = (byte)c;
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decomp_buffer[count++] = (byte)c;
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decomp_buffer[count++] = (byte)c;
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decomp_buffer[count++] = (byte)c;
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continue;
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}
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int m;
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if (7 == n)
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m = GetBits (1) + 1;
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else
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m = n + 2;
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for (uint j = 0; j < 4; j++)
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{
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if (8 == m)
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{
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c = GetBits (8);
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}
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else
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{
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int k = GetBits (m);
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if (0 != (k & 1))
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c += (k>>1) + 1;
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else
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c -= (k>>1);
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}
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decomp_buffer[count++] = (byte)c;
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}
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}
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int pbuf = stride * (int)(height-1) + i + 54; // in buf
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int psbuf = 0; // in decomp_buffer
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for (uint j = 0; j < height; j++)
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{
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if (0 != (j & 1))
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{
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for (uint k = 0; k < width; k++, pbuf -= 3)
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buf[pbuf] = decomp_buffer[psbuf++];
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pbuf -= stride - 3;
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}
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else
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{
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for (uint k = 0; k < width; k++, pbuf += 3)
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buf[pbuf] = decomp_buffer[psbuf++];
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pbuf -= stride + 3;
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}
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}
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}
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return total_size;
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}
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private int m_getbit_buf = 0;
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int GetBits (int n)
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{
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int x = 0;
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for (int i = 0; i < n; i++)
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{
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if (0 == m_getbit_mask)
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{
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if (m_getbit_len == m_getbit_count)
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{
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m_getbit_len = (uint)m_input.Read (m_read_buf, 0, m_read_buf.Length);
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if (0 == m_getbit_len)
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return -1;
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m_getbit_count = 0;
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}
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m_getbit_buf = m_read_buf[m_getbit_count++];
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m_getbit_mask = 128;
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}
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x <<= 1;
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if (0 != (m_getbit_buf & m_getbit_mask))
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x |= 1;
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m_getbit_mask >>= 1;
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}
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return x;
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}
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}
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}
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9
ArcFormats/Strings/arcStrings.Designer.cs
generated
9
ArcFormats/Strings/arcStrings.Designer.cs
generated
@ -243,6 +243,15 @@ namespace GameRes.Formats.Strings {
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}
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}
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/// <summary>
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/// Looks up a localized string similar to ONScripter game engine resource archive.
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/// </summary>
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public static string NSADescription {
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get {
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return ResourceManager.GetString("NSADescription", resourceCulture);
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}
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}
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/// <summary>
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/// Looks up a localized string similar to Amaterasu Translations Muv-Luv script file.
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/// </summary>
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@ -180,6 +180,9 @@ predefined encryption scheme.</value>
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<data name="NPASteinsGateDescription" xml:space="preserve">
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<value>Nitro+ Steins;Gate resource archive</value>
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</data>
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<data name="NSADescription" xml:space="preserve">
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<value>ONScripter game engine resource archive</value>
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</data>
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<data name="SCRDescription" xml:space="preserve">
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<value>Amaterasu Translations Muv-Luv script file</value>
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</data>
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Loading…
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Reference in New Issue
Block a user