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LSDARC archives (unfinished).
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morkt
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4acf1a178b
commit
48451ea482
258
ArcFormats/Gss/ArcARC.cs
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258
ArcFormats/Gss/ArcARC.cs
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//! \file ArcARC.cs
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//! \date 2018 May 05
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//! \brief GSS engine 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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namespace GameRes.Formats.Gss
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{
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[Export(typeof(ArchiveFormat))]
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public class LsdOpener : ArchiveFormat
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{
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public override string Tag { get { return "ARC/LSD"; } }
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public override string Description { get { return "GSS engine resource archive"; } }
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public override uint Signature { get { return 0; } }
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public override bool IsHierarchic { get { return false; } }
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public override bool CanWrite { get { return false; } }
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public override ArcFile TryOpen (ArcView file)
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{
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if (!file.Name.HasExtension (".arc"))
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return null;
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var bin_name = Path.ChangeExtension (file.Name, "BIN");
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if (!VFS.FileExists (bin_name))
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return null;
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using (var bin = VFS.OpenView (bin_name))
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{
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if (!bin.View.AsciiEqual (0, "LSDARC V.100"))
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return null;
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int count = bin.View.ReadInt32 (0xC);
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if (!IsSaneCount (count))
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return null;
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using (var index = bin.CreateStream())
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{
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index.Position = 0x10;
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var dir = new List<Entry> (count);
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for (int i = 0; i < count; ++i)
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{
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var entry = new PackedEntry();
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entry.IsPacked = index.ReadInt32() != 0;
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entry.Offset = index.ReadUInt32();
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entry.UnpackedSize = index.ReadUInt32();
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entry.Size = index.ReadUInt32();
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entry.Name = index.ReadCString();
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if (!entry.CheckPlacement (file.MaxOffset))
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return null;
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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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}
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public override Stream OpenEntry (ArcFile arc, Entry entry)
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{
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var pent = entry as PackedEntry;
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if (null == pent || !pent.IsPacked || !arc.File.View.AsciiEqual (entry.Offset, "LSD\x1A"))
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return base.OpenEntry (arc, entry);
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byte enc_method = arc.File.View.ReadByte (entry.Offset+4);
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byte pack_method = arc.File.View.ReadByte (entry.Offset+5);
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uint unpacked_size = arc.File.View.ReadUInt32 (entry.Offset+6);
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using (var input = arc.File.CreateStream (entry.Offset+12, entry.Size-12))
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{
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var data = new byte[unpacked_size];
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switch ((char)pack_method)
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{
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case 'D': UnpackD (input, data); break;
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case 'R': UnpackR (input, data); break;
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case 'H': UnpackH (input, data); break;
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case 'W': UnpackW (input, data); break;
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default: input.Read (data, 0, data.Length); break;
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}
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switch ((char)enc_method)
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{
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case 'B':
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case 'W':
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case 'S':
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break;
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}
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return new BinMemoryStream (data, entry.Name);
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}
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}
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public override IImageDecoder OpenImage (ArcFile arc, Entry entry)
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{
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throw new NotImplementedException();
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}
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void UnpackD (IBinaryStream input, byte[] output)
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{
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throw new NotImplementedException();
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}
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void UnpackR (IBinaryStream input, byte[] output)
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{
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int dst = 0;
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while (dst < output.Length)
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{
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int ctl = input.ReadByte();
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if (-1 == ctl)
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break;
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int count;
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if ((ctl & 0xC0) == 0xC0)
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{
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count = ctl & 0xF;
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ctl &= 0xF0;
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}
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else
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{
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count = ctl & 0x3F;
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ctl &= 0xC0;
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}
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switch (ctl)
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{
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case 0xF0: return;
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case 0x40:
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input.Read (output, dst, count);
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dst += count;
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break;
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case 0xD0:
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count = count << 8 | input.ReadUInt8();
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input.Read (output, dst, count);
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dst += count;
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break;
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case 0x80:
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{
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byte v = input.ReadUInt8();
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while (count --> 0)
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output[dst++] = v;
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break;
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}
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case 0xE0:
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{
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count = count << 8 | input.ReadUInt8();
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byte v = input.ReadUInt8();
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while (count --> 0)
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output[dst++] = v;
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break;
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}
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case 0x00:
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dst += count;
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break;
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case 0xC0:
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count = count << 8 | input.ReadUInt8();
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dst += count;
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break;
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}
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}
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}
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void UnpackH (IBinaryStream input, byte[] output)
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{
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throw new NotImplementedException();
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}
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void UnpackW (IBinaryStream input, byte[] output)
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{
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throw new NotImplementedException();
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/*
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int header_length = input.ReadUInt8();
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int shift = input.ReadUInt8();
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input.Read (output, 0, header_length);
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int dst = header_length & ~1;
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int v7 = 0;
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while (dst < output.Length)
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{
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int bit = v7 & 0x1F;
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int v9 = (v7 >> 3) & 0x1FFFFFFC;
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int v10;
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if (bit < 0x1C)
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{
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v10 = input.ReadInt32(); //MemInt32(&src[v9]);
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}
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else
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{
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v10 = input.ReadInt32(); //MemInt32(&src[v9 + 1]);
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bit -= 8;
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}
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v7 += 5;
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int v13 = (v10 >> bit) & 0x1F;
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bit = v7 & 0x1F;
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int v14 = (v7 >> 3) & 0x1FFFFFFC;
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if (bit < 8)
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{
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v10 = MemInt32(&src[v14]);
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}
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else if (bit < 0x10)
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{
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v10 = MemInt32(&src[v14 + 1]);
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bit -= 8;
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}
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else if (bit < 0x18)
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{
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v10 = MemInt32(&src[v14 + 2]);
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bit -= 16;
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}
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else
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{
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v10 = MemInt32(&src[v14 + 3]);
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bit -= 24;
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}
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v17 = v13 & 0xF;
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int sample = dword_455580[v17] + (((v10 >> bit) & (dword_4554E8[v17] >> shift)) << shift);
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if ((v13 & 0x10) != 0)
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sample = -sample;
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LittleEndian.Pack ((short)sample, output, dst);
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dst += 2;
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v20 = dword_455540[v17];
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if (v20 > shift)
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{
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v7 += v20 - shift;
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}
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}
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*/
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}
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static readonly int[] dword_455540 = {
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0x0, 0x0, 0x0, 0x0, 0x3, 0x4, 0x5, 0x6,
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0x7, 0x8, 0x9, 0xA, 0xB, 0xC, 0xD, 0xE
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};
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static readonly int[] dword_455580 = {
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0x00, 0x01, 0x02, 0x04, 0x08, 0x10, 0x20, 0x40, 0x80,
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0x0100, 0x0200, 0x0400, 0x0800, 0x1000, 0x2000, 0x4000
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};
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static readonly int[] dword_4554E8 = {
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0x00, 0x00, 0x00, 0x00, 0x07, 0x0F, 0x1F, 0x3F,
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0x7F, 0xFF, 0x01FF, 0x03FF, 0x07FF, 0x0FFF, 0x1FFF, 0x3FFF
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};
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}
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}
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