mirror of
https://github.com/crskycode/GARbro.git
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569 lines
21 KiB
C#
569 lines
21 KiB
C#
//! \file ArcGRP.cs
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//! \date Sun Mar 20 02:07:17 2016
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//! \brief Ankh resource archive.
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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.Utility;
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namespace GameRes.Formats.Ankh
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{
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[Export(typeof(ArchiveFormat))]
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public class GrpOpener : ArchiveFormat
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{
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public override string Tag { get { return "GRP/ICE"; } }
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public override string Description { get { return "Ice Soft 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 GrpOpener ()
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{
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Extensions = new string[] { "grp", "bin" };
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}
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public override ArcFile TryOpen (ArcView file)
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{
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uint first_offset = file.View.ReadUInt32 (0);
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if (first_offset < 8 || first_offset >= file.MaxOffset || 0 != (first_offset & 3))
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return null;
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int count = (int)(first_offset - 4) / 4;
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if (!IsSaneCount (count))
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return null;
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var base_name = Path.GetFileNameWithoutExtension (file.Name);
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uint index_offset = 0;
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uint next_offset = first_offset;
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var dir = new List<Entry> (count);
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for (int i = 0; i < count && next_offset < file.MaxOffset; ++i)
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{
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var entry = new PackedEntry { Offset = next_offset };
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index_offset += 4;
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next_offset = file.View.ReadUInt32 (index_offset);
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if (next_offset < entry.Offset)
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return null;
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entry.Size = (uint)(next_offset - entry.Offset);
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entry.UnpackedSize = entry.Size;
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if (entry.Size != 0)
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{
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if (!entry.CheckPlacement (file.MaxOffset))
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return null;
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entry.Name = string.Format ("{0}#{1:D4}", base_name, i);
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dir.Add (entry);
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}
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}
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if (0 == dir.Count)
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return null;
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DetectFileTypes (file, dir);
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return new ArcFile (file, this, dir);
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}
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void DetectFileTypes (ArcView file, List<Entry> dir)
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{
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foreach (PackedEntry entry in dir)
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{
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if (entry.Size <= 8)
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continue;
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if (file.View.AsciiEqual (entry.Offset, "TPW"))
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{
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entry.IsPacked = file.View.ReadByte (entry.Offset+3) != 0;
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long start_offset = entry.Offset+4;
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if (entry.IsPacked)
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{
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entry.UnpackedSize = file.View.ReadUInt32 (start_offset);
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start_offset = entry.Offset+11;
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}
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else
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{
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entry.Offset = start_offset;
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entry.Size -= 4;
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}
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if (file.View.AsciiEqual (start_offset, "BM"))
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entry.ChangeType (ImageFormat.Bmp);
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}
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else if (file.View.AsciiEqual (entry.Offset+4, "HDJ\0"))
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{
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if (file.View.AsciiEqual (entry.Offset+12, "BM"))
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entry.ChangeType (ImageFormat.Bmp);
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else if (file.View.AsciiEqual (entry.Offset+12, "MThd"))
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entry.Name = Path.ChangeExtension (entry.Name, "mid");
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entry.UnpackedSize = file.View.ReadUInt32 (entry.Offset);
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entry.IsPacked = true;
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}
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else if (file.View.AsciiEqual (entry.Offset+4, "OggS"))
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{
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entry.ChangeType (OggAudio.Instance);
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entry.Offset += 4;
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entry.Size -= 4;
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}
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else if (entry.Size > 12 && file.View.AsciiEqual (entry.Offset+8, "RIFF"))
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{
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entry.ChangeType (AudioFormat.Wav);
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entry.UnpackedSize = file.View.ReadUInt32 (entry.Offset);
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entry.IsPacked = true;
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}
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else if (file.View.AsciiEqual (entry.Offset, "BM"))
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{
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entry.ChangeType (ImageFormat.Bmp);
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}
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else if (entry.Size > 0x16 && IsAudioEntry (file, entry))
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{
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entry.Type = "audio";
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}
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}
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}
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bool IsAudioEntry (ArcView file, Entry entry)
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{
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uint signature = file.View.ReadUInt32 (entry.Offset);
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if (signature != 0x010001 && signature != 0x020001)
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return false;
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int extra = file.View.ReadUInt16 (entry.Offset+0x10);
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if (extra != 0)
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return false;
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uint size = file.View.ReadUInt32 (entry.Offset+0x12);
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return 0x16 + size == entry.Size;
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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 (pent != null && pent.IsPacked && pent.Size > 8)
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{
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try
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{
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if (arc.File.View.AsciiEqual (entry.Offset, "TPW"))
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return OpenTpw (arc, pent);
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if (arc.File.View.AsciiEqual (entry.Offset+4, "HDJ\0"))
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return OpenImage (arc, pent);
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if (entry.Size > 12 && 'W' == arc.File.View.ReadByte (entry.Offset+4)
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&& arc.File.View.AsciiEqual (entry.Offset+8, "RIFF"))
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return OpenAudio (arc, entry);
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}
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catch (Exception X)
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{
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System.Diagnostics.Trace.WriteLine (X.Message, "[GRP]");
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}
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}
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return base.OpenEntry (arc, entry);
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}
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Stream OpenImage (ArcFile arc, PackedEntry entry)
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{
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using (var packed = arc.File.CreateStream (entry.Offset+8, entry.Size-8))
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using (var reader = new GrpUnpacker (packed))
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{
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var unpacked = new byte[entry.UnpackedSize];
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reader.UnpackHDJ (unpacked, 0);
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return new BinMemoryStream (unpacked, entry.Name);
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}
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}
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Stream OpenAudio (ArcFile arc, Entry entry)
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{
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int unpacked_size = arc.File.View.ReadInt32 (entry.Offset);
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byte pack_type = arc.File.View.ReadByte (entry.Offset+5);
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byte channels = arc.File.View.ReadByte (entry.Offset+6);
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byte header_size = arc.File.View.ReadByte (entry.Offset+7);
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if (unpacked_size <= 0 || header_size > unpacked_size
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|| !('A' == pack_type || 'S' == pack_type))
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return base.OpenEntry (arc, entry);
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var unpacked = new byte[unpacked_size];
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arc.File.View.Read (entry.Offset+8, unpacked, 0, header_size);
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uint packed_size = entry.Size - 8 - header_size;
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using (var packed = arc.File.CreateStream (entry.Offset+8+header_size, packed_size))
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using (var reader = new GrpUnpacker (packed))
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{
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if ('A' == pack_type)
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reader.UnpackA (unpacked, header_size, channels);
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else
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reader.UnpackS (unpacked, header_size, channels);
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return new BinMemoryStream (unpacked, entry.Name);
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}
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}
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Stream OpenTpw (ArcFile arc, PackedEntry entry)
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{
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var output = new byte[entry.UnpackedSize];
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using (var input = arc.File.CreateStream (entry.Offset, entry.Size))
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{
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input.Position = 8;
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var offsets = new int[4];
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offsets[0] = input.ReadUInt16();
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offsets[1] = offsets[0] * 2;
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offsets[2] = offsets[0] * 3;
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offsets[3] = offsets[0] * 4;
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int dst = 0;
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while (dst < output.Length)
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{
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byte ctl = input.ReadUInt8();
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if (0 == ctl)
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break;
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int count;
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if (ctl < 0x40)
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{
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input.Read (output, dst, ctl);
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dst += ctl;
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}
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else if (ctl <= 0x6F)
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{
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if (0x6F == ctl)
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count = input.ReadUInt16();
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else
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count = (ctl + 0xC3) & 0xFF;
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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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}
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else if (ctl <= 0x9F)
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{
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if (ctl == 0x9F)
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count = input.ReadUInt16();
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else
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count = (ctl + 0x92) & 0xFF;
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byte v1 = input.ReadUInt8();
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byte v2 = input.ReadUInt8();
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while (count --> 0)
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{
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output[dst++] = v1;
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output[dst++] = v2;
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}
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}
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else if (ctl <= 0xBF)
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{
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if (ctl == 0xBF)
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count = input.ReadUInt16();
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else
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count = ((ctl + 0x62) & 0xFF);
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input.Read (output, dst, 3);
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if (count > 0)
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{
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count *= 3;
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Binary.CopyOverlapped (output, dst, dst+3, count-3);
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dst += count;
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}
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}
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else
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{
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count = (ctl & 0x3F) + 3;
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int offset = input.ReadUInt8();
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offset = (offset & 0x3F) - offsets[offset >> 6];
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Binary.CopyOverlapped (output, dst+offset, dst, count);
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dst += count;
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}
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}
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return new BinMemoryStream (output, entry.Name);
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}
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}
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}
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internal sealed class GrpUnpacker : IDisposable
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{
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IBinaryStream m_input;
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uint m_bits;
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int m_cached_bits;
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public GrpUnpacker (IBinaryStream input)
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{
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m_input = input;
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}
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// Different games have slightly different formats using exact same headers,
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// so have to invent some flawed format recognition here.
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enum GrpVariant { Default, BoD };
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static GrpVariant LastUsedMethod = GrpVariant.Default;
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static GrpVariant GetOppositeVariant ()
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{
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return GrpVariant.Default == LastUsedMethod ? GrpVariant.BoD : GrpVariant.Default;
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}
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public void UnpackHDJ (byte[] output, int dst)
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{
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try
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{
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if (UnpackHDJVariant (output, dst, LastUsedMethod))
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return;
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}
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catch { /* ignore unpack errors */ }
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var method = GetOppositeVariant();
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m_input.Position = 0;
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if (!UnpackHDJVariant (output, dst, method))
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throw new InvalidFormatException();
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LastUsedMethod = method;
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}
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private bool UnpackHDJVariant (byte[] output, int dst, GrpVariant method)
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{
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ResetBits();
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int word_count = 0;
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int byte_count = 0;
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uint next_byte = 0;
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uint next_word = 0;
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while (dst < output.Length)
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{
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if (GetNextBit() != 0)
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{
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int count = 0;
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bool long_count = false;
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int offset;
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if (GetNextBit() != 0)
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{
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if (0 == word_count)
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{
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next_word = m_input.ReadUInt32();
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word_count = 2;
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}
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count = (int)((next_word >> 13) & 7) + 3;
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offset = (int)(next_word | 0xFFFFE000);
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next_word >>= 16;
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--word_count;
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long_count = 10 == count;
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}
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else
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{
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if (method == GrpVariant.Default)
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count = GetBits (2);
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if (0 == byte_count)
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{
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next_byte = m_input.ReadUInt32();
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byte_count = 4;
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}
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if (method != GrpVariant.Default)
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count = GetBits (2);
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count += 2;
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long_count = 5 == count;
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offset = (int)(next_byte | 0xFFFFFF00);
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next_byte >>= 8;
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--byte_count;
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}
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if (long_count)
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{
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int n = 0;
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while (GetNextBit() != 0)
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++n;
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if (n != 0)
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count += GetBits (n) + 1;
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}
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int src = dst + offset;
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if (src < 0 || src >= dst || dst + count > output.Length)
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return false;
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Binary.CopyOverlapped (output, src, dst, count);
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dst += count;
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}
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else
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{
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if (0 == byte_count)
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{
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next_byte = m_input.ReadUInt32();
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byte_count = 4;
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}
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output[dst++] = (byte)next_byte;
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next_byte >>= 8;
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--byte_count;
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}
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}
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return true;
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}
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public void UnpackS (byte[] output, int dst, int channels)
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{
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try
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{
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if (UnpackSVariant (output, dst, channels, LastUsedMethod))
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return;
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}
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catch { /* ignore parse errors */ }
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var method = GetOppositeVariant();
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m_input.Position = 0;
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if (UnpackSVariant (output, dst, channels, method))
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LastUsedMethod = method;
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}
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bool UnpackSVariant (byte[] output, int dst, int channels, GrpVariant method)
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{
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if (GrpVariant.Default == method)
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UnpackSv2 (output, dst, channels);
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else
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UnpackSv1 (output, dst, channels);
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return m_input.PeekByte() == -1; // rather loose test, but whatever
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}
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void UnpackSv1 (byte[] output, int dst, int channels)
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{
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ResetBits();
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short last_word = 0;
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while (dst < output.Length)
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{
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int word;
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if (GetNextBit() != 0)
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{
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if (GetNextBit() != 0)
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word = GetBits (10) << 6;
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else
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word = 0;
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}
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else
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{
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int adjust = GetBits (5) << 6;
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if (0 != (adjust & 0x400))
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adjust = -(adjust & 0x3FF);
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word = last_word + adjust;
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}
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last_word = (short)word;
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LittleEndian.Pack (last_word, output, dst);
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dst += 2;
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}
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}
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void UnpackSv2 (byte[] output, int dst, int channels)
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{
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if (channels != 1)
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m_input.Seek ((channels-1) * 4, SeekOrigin.Current);
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int step = channels * 2;
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for (int i = 0; i < channels; ++i)
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{
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ResetBits();
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int pos = dst;
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short last_word = 0;
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while (pos < output.Length)
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{
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int word;
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if (GetNextBit() != 0)
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{
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if (GetNextBit() != 0)
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{
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word = GetBits (10) << 6;
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}
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else
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{
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int repeat;
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if (GetNextBit() != 0)
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{
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int bit_length = 0;
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do
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{
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++bit_length;
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}
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while (GetNextBit() != 0);
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repeat = GetBits (bit_length) + 4;
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}
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else
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{
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repeat = GetBits (2);
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}
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word = 0;
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while (repeat --> 0)
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{
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output[pos] = 0;
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output[pos+1] = 0;
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pos += step;
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}
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}
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}
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else
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{
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int adjust = (short)(GetBits (5) << 11) >> 5;
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word = last_word + adjust;
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}
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LittleEndian.Pack ((short)word, output, pos);
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last_word = (short)word;
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pos += step;
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}
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dst += 2;
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}
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}
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public void UnpackA (byte[] output, int dst, int channels)
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{
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if (channels != 1)
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m_input.Seek ((channels-1) * 4, SeekOrigin.Current);
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int step = 2 * channels;
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for (int i = 0; i < channels; ++i)
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{
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int pos = dst;
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ResetBits();
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while (pos < output.Length)
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{
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int word = GetBits (10) << 6;;
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LittleEndian.Pack ((short)word, output, pos);
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pos += step;
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}
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dst += 2;
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}
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}
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void ResetBits ()
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{
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m_cached_bits = 0;
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}
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int GetNextBit ()
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{
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return GetBits (1);
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}
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int GetBits (int count)
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{
|
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if (0 == m_cached_bits)
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{
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m_bits = m_input.ReadUInt32();
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m_cached_bits = 32;
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}
|
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uint val;
|
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if (m_cached_bits < count)
|
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{
|
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uint next_bits = m_input.ReadUInt32();
|
|
val = (m_bits | (next_bits >> m_cached_bits)) >> (32 - count);
|
|
m_bits = next_bits << (count - m_cached_bits);
|
|
m_cached_bits = 32 - (count - m_cached_bits);
|
|
}
|
|
else
|
|
{
|
|
val = m_bits >> (32 - count);
|
|
m_bits <<= count;
|
|
m_cached_bits -= count;
|
|
}
|
|
return (int)val;
|
|
}
|
|
|
|
#region IDisposable Members
|
|
bool _disposed = false;
|
|
public void Dispose ()
|
|
{
|
|
if (!_disposed)
|
|
{
|
|
m_input.Dispose();
|
|
_disposed = true;
|
|
}
|
|
}
|
|
#endregion
|
|
}
|
|
}
|