mirror of
https://github.com/crskycode/GARbro.git
synced 2024-11-30 17:05:37 +08:00
3c3f2013ef
(ExeFile): limited support for 16-bit Windows executables. (MbImageFormat): recognize 'MK' signature. (XP3, VF, YPF): added common executable signature. (PICT): improved parser. (Macromedia): improved support, recognize archives within windows executables. (SEEN): fixed decompression.
837 lines
28 KiB
C#
837 lines
28 KiB
C#
//! \file DirectorFile.cs
|
|
//! \date 2023 Aug 21
|
|
//! \brief Macromedia Director container deserialization.
|
|
//
|
|
// Copyright (C) 2023 by morkt
|
|
//
|
|
// Permission is hereby granted, free of charge, to any person obtaining a copy
|
|
// of this software and associated documentation files (the "Software"), to
|
|
// deal in the Software without restriction, including without limitation the
|
|
// rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
|
|
// sell copies of the Software, and to permit persons to whom the Software is
|
|
// furnished to do so, subject to the following conditions:
|
|
//
|
|
// The above copyright notice and this permission notice shall be included in
|
|
// all copies or substantial portions of the Software.
|
|
//
|
|
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
|
|
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
|
|
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
|
|
// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
|
|
// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
|
|
// FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
|
|
// IN THE SOFTWARE.
|
|
//
|
|
|
|
using GameRes.Compression;
|
|
using GameRes.Utility;
|
|
using System;
|
|
using System.Collections.Generic;
|
|
using System.Diagnostics;
|
|
using System.IO;
|
|
using System.Text;
|
|
|
|
namespace GameRes.Formats.Macromedia
|
|
{
|
|
internal enum ByteOrder
|
|
{
|
|
LittleEndian, BigEndian
|
|
}
|
|
|
|
internal enum DataType
|
|
{
|
|
Null = 0,
|
|
Bitmap = 1,
|
|
FilmLoop = 2,
|
|
Text = 3,
|
|
Palette = 4,
|
|
Picture = 5,
|
|
Sound = 6,
|
|
Button = 7,
|
|
Shape = 8,
|
|
Movie = 9,
|
|
DigitalVideo = 10,
|
|
Script = 11,
|
|
RTE = 12,
|
|
}
|
|
|
|
internal class SerializationContext
|
|
{
|
|
public int Version;
|
|
public Encoding Encoding;
|
|
|
|
public SerializationContext ()
|
|
{
|
|
Encoding = Encodings.cp932;
|
|
}
|
|
}
|
|
|
|
internal class DirectorFile
|
|
{
|
|
List<DirectorEntry> m_dir;
|
|
Dictionary<int, DirectorEntry> m_index = new Dictionary<int, DirectorEntry>();
|
|
MemoryMap m_mmap = new MemoryMap();
|
|
KeyTable m_keyTable = new KeyTable();
|
|
DirectorConfig m_config = new DirectorConfig();
|
|
List<Cast> m_casts = new List<Cast>();
|
|
Dictionary<int, byte[]> m_ilsMap = new Dictionary<int, byte[]>();
|
|
string m_codec;
|
|
|
|
public string Codec => m_codec;
|
|
|
|
public bool IsAfterBurned { get; private set; }
|
|
|
|
public MemoryMap MMap => m_mmap;
|
|
public KeyTable KeyTable => m_keyTable;
|
|
public DirectorConfig Config => m_config;
|
|
public List<Cast> Casts => m_casts;
|
|
public List<DirectorEntry> Directory => m_dir;
|
|
public Dictionary<int, DirectorEntry> Index => m_index;
|
|
|
|
public DirectorEntry Find (string four_cc) => Directory.Find (e => e.FourCC == four_cc);
|
|
|
|
public DirectorEntry FindById (int id)
|
|
{
|
|
DirectorEntry entry;
|
|
m_index.TryGetValue (id, out entry);
|
|
return entry;
|
|
}
|
|
|
|
public bool Deserialize (SerializationContext context, Reader reader)
|
|
{
|
|
reader.Skip (8);
|
|
m_codec = reader.ReadFourCC();
|
|
if (m_codec == "MV93" || m_codec == "MC95")
|
|
{
|
|
if (!ReadMMap (context, reader))
|
|
return false;
|
|
}
|
|
else if (m_codec == "FGDC" || m_codec == "FGDM")
|
|
{
|
|
IsAfterBurned = true;
|
|
if (!ReadAfterBurner (context, reader))
|
|
return false;
|
|
}
|
|
else
|
|
{
|
|
Trace.WriteLine (string.Format ("Unknown m_codec '{0}'", m_codec), "DXR");
|
|
return false;
|
|
}
|
|
return ReadKeyTable (context, reader)
|
|
&& ReadConfig (context, reader)
|
|
&& ReadCasts (context, reader);
|
|
}
|
|
|
|
internal bool ReadMMap (SerializationContext context, Reader reader)
|
|
{
|
|
if (reader.ReadFourCC() != "imap")
|
|
return false;
|
|
reader.Skip (8);
|
|
uint mmap_pos = reader.ReadU32();
|
|
reader.Position = mmap_pos;
|
|
if (reader.ReadFourCC() != "mmap")
|
|
return false;
|
|
reader.Position = mmap_pos + 8;
|
|
MMap.Deserialize (context, reader);
|
|
m_dir = MMap.Dir;
|
|
for (int i = 0; i < m_dir.Count; ++i)
|
|
{
|
|
m_index[i] = m_dir[i];
|
|
}
|
|
return true;
|
|
}
|
|
|
|
bool ReadAfterBurner (SerializationContext context, Reader reader)
|
|
{
|
|
if (reader.ReadFourCC() != "Fver")
|
|
return false;
|
|
int length = reader.ReadVarInt();
|
|
long next_pos = reader.Position + length;
|
|
int version = reader.ReadVarInt();
|
|
if (version > 0x400)
|
|
{
|
|
reader.ReadVarInt(); // imap version
|
|
reader.ReadVarInt(); // director version
|
|
}
|
|
if (version > 0x500)
|
|
{
|
|
int str_len = reader.ReadU8();
|
|
reader.Skip (str_len); // version string
|
|
}
|
|
|
|
reader.Position = next_pos;
|
|
if (reader.ReadFourCC() != "Fcdr")
|
|
return false;
|
|
// skip compression table, assume everything is zlib-compressed
|
|
length = reader.ReadVarInt();
|
|
|
|
reader.Position += length;
|
|
if (reader.ReadFourCC() != "ABMP")
|
|
return false;
|
|
length = reader.ReadVarInt();
|
|
next_pos = reader.Position + length;
|
|
reader.ReadVarInt(); // compression type, index within 'Fcdr' compression table
|
|
int unpacked_size = reader.ReadVarInt();
|
|
using (var abmp = new ZLibStream (reader.Source, CompressionMode.Decompress, true))
|
|
{
|
|
var abmp_reader = new Reader (abmp, reader.ByteOrder);
|
|
if (!ReadABMap (context, abmp_reader))
|
|
return false;
|
|
}
|
|
|
|
reader.Position = next_pos;
|
|
if (reader.ReadFourCC() != "FGEI")
|
|
return false;
|
|
reader.ReadVarInt();
|
|
long base_offset = reader.Position;
|
|
foreach (var entry in m_dir)
|
|
{
|
|
m_index[entry.Id] = entry;
|
|
if (entry.Offset >= 0)
|
|
entry.Offset += base_offset;
|
|
}
|
|
var ils_chunk = FindById (2);
|
|
if (null == ils_chunk)
|
|
return false;
|
|
using (var ils = new ZLibStream (reader.Source, CompressionMode.Decompress, true))
|
|
{
|
|
uint pos = 0;
|
|
var ils_reader = new Reader (ils, reader.ByteOrder);
|
|
while (pos < ils_chunk.UnpackedSize)
|
|
{
|
|
int id = ils_reader.ReadVarInt();
|
|
var chunk = m_index[id];
|
|
m_ilsMap[id] = ils_reader.ReadBytes ((int)chunk.Size);
|
|
pos += ils_reader.GetVarIntLength ((uint)id) + chunk.Size;
|
|
}
|
|
}
|
|
return true;
|
|
}
|
|
|
|
bool ReadABMap (SerializationContext context, Reader reader)
|
|
{
|
|
reader.ReadVarInt();
|
|
reader.ReadVarInt();
|
|
int count = reader.ReadVarInt();
|
|
m_dir = new List<DirectorEntry> (count);
|
|
for (int i = 0; i < count; ++ i)
|
|
{
|
|
var entry = new AfterBurnerEntry();
|
|
entry.Deserialize (context, reader);
|
|
m_dir.Add (entry);
|
|
}
|
|
return true;
|
|
}
|
|
|
|
Reader GetChunkReader (DirectorEntry chunk, Reader reader)
|
|
{
|
|
if (-1 == chunk.Offset)
|
|
{
|
|
byte[] chunk_data;
|
|
if (!m_ilsMap.TryGetValue (chunk.Id, out chunk_data))
|
|
throw new InvalidFormatException (string.Format ("Can't find chunk {0} in ILS", chunk.FourCC));
|
|
var input = new BinMemoryStream (chunk_data, null);
|
|
reader = new Reader (input, reader.ByteOrder);
|
|
}
|
|
else
|
|
{
|
|
reader.Position = chunk.Offset;
|
|
}
|
|
return reader;
|
|
}
|
|
|
|
bool ReadKeyTable (SerializationContext context, Reader reader)
|
|
{
|
|
var key_chunk = Find ("KEY*");
|
|
if (null == key_chunk)
|
|
return false;
|
|
reader = GetChunkReader (key_chunk, reader);
|
|
KeyTable.Deserialize (context, reader);
|
|
return true;
|
|
}
|
|
|
|
bool ReadConfig (SerializationContext context, Reader reader)
|
|
{
|
|
var config_chunk = Find ("VWCF") ?? Find ("DRCF");
|
|
if (null == config_chunk)
|
|
return false;
|
|
reader = GetChunkReader (config_chunk, reader);
|
|
Config.Deserialize (context, reader);
|
|
context.Version = Config.Version;
|
|
return true;
|
|
}
|
|
|
|
bool ReadCasts (SerializationContext context, Reader reader)
|
|
{
|
|
Reader cas_reader;
|
|
if (context.Version > 1200)
|
|
{
|
|
var mcsl = Find ("MCsL");
|
|
if (mcsl != null)
|
|
{
|
|
var mcsl_reader = GetChunkReader (mcsl, reader);
|
|
var cast_list = new CastList();
|
|
cast_list.Deserialize (context, mcsl_reader);
|
|
foreach (var entry in cast_list.Entries)
|
|
{
|
|
var key_entry = KeyTable.FindByCast (entry.Id, "CAS*");
|
|
if (key_entry != null)
|
|
{
|
|
var cas_entry = Index[key_entry.Id];
|
|
cas_reader = GetChunkReader (cas_entry, reader);
|
|
var cast = new Cast (context, cas_reader, cas_entry);
|
|
if (!PopulateCast (cast, context, reader, entry))
|
|
return false;
|
|
Casts.Add (cast);
|
|
}
|
|
}
|
|
return true;
|
|
}
|
|
}
|
|
var cas_chunk = Find ("CAS*");
|
|
if (null == cas_chunk)
|
|
return false;
|
|
var new_entry = new CastListEntry { Name = "internal", Id = 0x400, MinMember = Config.MinMember };
|
|
cas_reader = GetChunkReader (cas_chunk, reader);
|
|
var new_cast = new Cast (context, cas_reader, cas_chunk);
|
|
if (!PopulateCast (new_cast, context, reader, new_entry))
|
|
return false;
|
|
Casts.Add (new_cast);
|
|
return true;
|
|
}
|
|
|
|
public bool PopulateCast (Cast cast, SerializationContext context, Reader reader, CastListEntry entry)
|
|
{
|
|
cast.Name = entry.Name;
|
|
for (int i = 0; i < cast.Index.Length; ++i)
|
|
{
|
|
int chunk_id = cast.Index[i];
|
|
if (chunk_id > 0)
|
|
{
|
|
var chunk = this.Index[chunk_id];
|
|
var member = new CastMember();
|
|
member.Id = chunk_id;
|
|
var cast_reader = GetChunkReader (chunk, reader);
|
|
member.Deserialize (context, cast_reader);
|
|
cast.Members[member.Id] = member;
|
|
}
|
|
}
|
|
return true;
|
|
}
|
|
}
|
|
|
|
internal class CastMember
|
|
{
|
|
public DataType Type;
|
|
public CastInfo Info = new CastInfo();
|
|
public byte[] SpecificData;
|
|
public byte Flags;
|
|
public int Id;
|
|
|
|
public void Deserialize (SerializationContext context, Reader reader)
|
|
{
|
|
reader = reader.CloneUnless (ByteOrder.BigEndian);
|
|
if (context.Version > 1200)
|
|
{
|
|
Type = (DataType)reader.ReadI32();
|
|
int info_length = reader.ReadI32();
|
|
int data_length = reader.ReadI32();
|
|
if (info_length > 0)
|
|
{
|
|
Info.Deserialize (context, reader);
|
|
}
|
|
SpecificData = reader.ReadBytes (data_length);
|
|
}
|
|
else
|
|
{
|
|
int data_length = reader.ReadU16();
|
|
int info_length = reader.ReadI32();
|
|
Type = (DataType)reader.ReadU8();
|
|
--data_length;
|
|
if (data_length > 0)
|
|
{
|
|
Flags = reader.ReadU8();
|
|
--data_length;
|
|
}
|
|
SpecificData = reader.ReadBytes (data_length);
|
|
if (info_length > 0)
|
|
{
|
|
Info.Deserialize (context, reader);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
internal class CastInfo
|
|
{
|
|
public uint DataOffset;
|
|
public uint ScriptKey;
|
|
public uint Flags;
|
|
public int ScriptId;
|
|
public string Name;
|
|
public string SourceText;
|
|
public List<byte[]> Items = new List<byte[]>();
|
|
|
|
public void Deserialize (SerializationContext context, Reader reader)
|
|
{
|
|
long base_offset = reader.Position;
|
|
DataOffset = reader.ReadU32();
|
|
ScriptKey = reader.ReadU32();
|
|
reader.Skip (4);
|
|
Flags = reader.ReadU32();
|
|
ScriptId = reader.ReadI32();
|
|
reader.Position = base_offset + DataOffset;
|
|
int table_len = reader.ReadU16();
|
|
var offsets = new int[table_len];
|
|
for (int i = 0; i < table_len; ++i)
|
|
offsets[i] = reader.ReadI32();
|
|
|
|
int data_length = reader.ReadI32();
|
|
long list_offset = reader.Position;
|
|
Items.Clear();
|
|
Items.Capacity = offsets.Length;
|
|
for (int i = 0; i < offsets.Length; ++i)
|
|
{
|
|
int offset = offsets[i];
|
|
int next_offset = (i + 1 < offsets.Length) ? offsets[i+1] : data_length;
|
|
reader.Position = list_offset + offset;
|
|
Items.Add (reader.ReadBytes (next_offset - offset));
|
|
}
|
|
|
|
SourceText = Items.Count > 0 ? Binary.GetCString (Items[0], 0) : string.Empty;
|
|
Name = GetString (1, context.Encoding);
|
|
}
|
|
|
|
string GetString (int item_idx, Encoding enc)
|
|
{
|
|
if (item_idx >= Items.Count)
|
|
return string.Empty;
|
|
var src = Items[item_idx];
|
|
if (src.Length <= 1 || 0 == src[0])
|
|
return string.Empty;
|
|
int len = src[0];
|
|
return enc.GetString (src, 1, len);
|
|
}
|
|
}
|
|
|
|
internal class Cast
|
|
{
|
|
public int[] Index;
|
|
public string Name;
|
|
public Dictionary<int, CastMember> Members = new Dictionary<int, CastMember>();
|
|
|
|
public Cast (SerializationContext context, Reader reader, DirectorEntry entry)
|
|
{
|
|
int count = (int)(entry.Size / 4);
|
|
Index = new int[count];
|
|
Deserialize (context, reader);
|
|
}
|
|
|
|
public void Deserialize (SerializationContext context, Reader reader)
|
|
{
|
|
reader = reader.CloneUnless (ByteOrder.BigEndian);
|
|
for (int i = 0; i < Index.Length; ++i)
|
|
Index[i] = reader.ReadI32();
|
|
}
|
|
}
|
|
|
|
internal class CastList
|
|
{
|
|
public uint DataOffset;
|
|
public int OffsetCount;
|
|
public int[] OffsetTable;
|
|
public int ItemsLength;
|
|
public int CastCount;
|
|
public int ItemsPerCast;
|
|
public List<byte[]> Items = new List<byte[]>();
|
|
|
|
public readonly List<CastListEntry> Entries = new List<CastListEntry>();
|
|
|
|
public void Deserialize (SerializationContext context, Reader reader)
|
|
{
|
|
long base_offset = reader.Position;
|
|
reader = reader.CloneUnless (ByteOrder.BigEndian);
|
|
DataOffset = reader.ReadU32();
|
|
reader.Skip (2);
|
|
CastCount = reader.ReadU16();
|
|
ItemsPerCast = reader.ReadU16();
|
|
reader.Skip (2);
|
|
reader.Position = base_offset + DataOffset;
|
|
OffsetCount = reader.ReadU16();
|
|
OffsetTable = new int[OffsetCount];
|
|
for (int i = 0; i < OffsetCount; ++i)
|
|
{
|
|
OffsetTable[i] = reader.ReadI32();
|
|
}
|
|
ItemsLength = reader.ReadI32();
|
|
long items_offset = reader.Position;
|
|
Items.Clear();
|
|
Items.Capacity = OffsetCount;
|
|
for (int i = 0; i < OffsetCount; ++i)
|
|
{
|
|
int offset = OffsetTable[i];
|
|
int next_offset = (i + 1 < OffsetCount) ? OffsetTable[i + 1] : ItemsLength;
|
|
int item_size = next_offset - offset;
|
|
Items.Add (reader.ReadBytes (item_size));
|
|
}
|
|
|
|
Entries.Clear();
|
|
Entries.Capacity = CastCount;
|
|
int item_idx = 0;
|
|
for (int i = 0; i < CastCount; ++i)
|
|
{
|
|
var entry = new CastListEntry();
|
|
if (ItemsPerCast >= 1)
|
|
entry.Name = GetString (item_idx + 1, context.Encoding);
|
|
if (ItemsPerCast >= 2)
|
|
entry.Path = GetString (item_idx + 2, context.Encoding);
|
|
if (ItemsPerCast >= 3 && Items[item_idx + 3].Length >= 2)
|
|
entry.Flags = BigEndian.ToUInt16 (Items[item_idx + 3], 0);
|
|
if (ItemsPerCast >= 4 && Items[item_idx + 4].Length >= 8)
|
|
{
|
|
entry.MinMember = BigEndian.ToUInt16 (Items[item_idx + 4], 0);
|
|
entry.MaxMember = BigEndian.ToUInt16 (Items[item_idx + 4], 2);
|
|
entry.Id = BigEndian.ToInt32 (Items[item_idx + 4], 4);
|
|
}
|
|
Entries.Add (entry);
|
|
}
|
|
}
|
|
|
|
string GetString (int item_idx, Encoding enc)
|
|
{
|
|
var src = Items[item_idx];
|
|
if (src.Length <= 1 || 0 == src[0])
|
|
return string.Empty;
|
|
int len = src[0];
|
|
return enc.GetString (src, 1, len);
|
|
}
|
|
}
|
|
|
|
internal class CastListEntry
|
|
{
|
|
public string Name;
|
|
public string Path;
|
|
public ushort Flags;
|
|
public int MinMember;
|
|
public int MaxMember;
|
|
public int Id;
|
|
}
|
|
|
|
internal class DirectorConfig
|
|
{
|
|
public short Length;
|
|
public short FileVersion;
|
|
public short StageTop;
|
|
public short StageLeft;
|
|
public short StageBottom;
|
|
public short StageRight;
|
|
public short MinMember;
|
|
public short MaxMember;
|
|
public ushort StageColor;
|
|
public ushort BitDepth;
|
|
public int Version;
|
|
public int FrameRate;
|
|
public int Platform;
|
|
public int Protection;
|
|
public uint CheckSum;
|
|
public int DefaultPalette;
|
|
|
|
public void Deserialize (SerializationContext context, Reader reader)
|
|
{
|
|
long base_offset = reader.Position;
|
|
reader = reader.CloneUnless (ByteOrder.BigEndian);
|
|
|
|
reader.Position = base_offset + 0x24;
|
|
Version = reader.ReadU16();
|
|
reader.Position = base_offset;
|
|
Length = reader.ReadI16();
|
|
FileVersion = reader.ReadI16();
|
|
StageTop = reader.ReadI16();
|
|
StageLeft = reader.ReadI16();
|
|
StageBottom = reader.ReadI16();
|
|
StageRight = reader.ReadI16();
|
|
MinMember = reader.ReadI16();
|
|
MaxMember = reader.ReadI16();
|
|
reader.Skip (0x0A);
|
|
StageColor = reader.ReadU16();
|
|
BitDepth = reader.ReadU16();
|
|
reader.Skip (0x18);
|
|
FrameRate = reader.ReadU16();
|
|
Platform = reader.ReadI16();
|
|
Protection = reader.ReadI16();
|
|
reader.Skip (4);
|
|
CheckSum = reader.ReadU32();
|
|
if (Version > 1200)
|
|
{
|
|
reader.Position = base_offset + 0x4E;
|
|
}
|
|
else
|
|
{
|
|
reader.Position = base_offset + 0x46;
|
|
}
|
|
DefaultPalette = reader.ReadU16();
|
|
}
|
|
}
|
|
|
|
internal class KeyTable
|
|
{
|
|
public int EntrySize;
|
|
public int TotalCount;
|
|
public int UsedCount;
|
|
public readonly List<KeyTableEntry> Table = new List<KeyTableEntry>();
|
|
|
|
public KeyTableEntry this[int index] => Table[index];
|
|
|
|
public KeyTableEntry FindByCast (int cast_id, string four_cc)
|
|
{
|
|
return Table.Find (e => e.CastId == cast_id && e.FourCC == four_cc);
|
|
}
|
|
|
|
public void Deserialize (SerializationContext context, Reader reader)
|
|
{
|
|
EntrySize = reader.ReadU16();
|
|
reader.Skip(2);
|
|
TotalCount = reader.ReadI32();
|
|
UsedCount = reader.ReadI32();
|
|
|
|
Table.Clear();
|
|
Table.Capacity = TotalCount;
|
|
for (int i = 0; i < TotalCount; ++i)
|
|
{
|
|
var entry = new KeyTableEntry();
|
|
entry.Deserialize (context, reader);
|
|
Table.Add (entry);
|
|
}
|
|
}
|
|
}
|
|
|
|
internal class KeyTableEntry
|
|
{
|
|
public int Id;
|
|
public int CastId;
|
|
public string FourCC;
|
|
|
|
public void Deserialize (SerializationContext context, Reader input)
|
|
{
|
|
Id = input.ReadI32();
|
|
CastId = input.ReadI32();
|
|
FourCC = input.ReadFourCC();
|
|
}
|
|
}
|
|
|
|
internal class MemoryMap
|
|
{
|
|
public ushort HeaderLength;
|
|
public ushort EntryLength;
|
|
public int ChunkCountMax;
|
|
public int ChunkCountUsed;
|
|
public int FreeHead;
|
|
public readonly List<DirectorEntry> Dir = new List<DirectorEntry>();
|
|
|
|
public DirectorEntry this[int index] => Dir[index];
|
|
|
|
public void Deserialize (SerializationContext context, Reader reader)
|
|
{
|
|
long header_pos = reader.Position;
|
|
HeaderLength = reader.ReadU16();
|
|
if (HeaderLength < 0x18)
|
|
throw new InvalidFormatException ("Invalid <mmap> header length.");
|
|
EntryLength = reader.ReadU16();
|
|
if (EntryLength < 0x14)
|
|
throw new InvalidFormatException ("Invalid <mmap> entry length.");
|
|
ChunkCountMax = reader.ReadI32();
|
|
ChunkCountUsed = reader.ReadI32();
|
|
reader.Skip (8);
|
|
FreeHead = reader.ReadI32();
|
|
|
|
Dir.Clear();
|
|
Dir.Capacity = ChunkCountUsed;
|
|
long entry_pos = header_pos + HeaderLength;
|
|
for (int i = 0; i < ChunkCountUsed; ++i)
|
|
{
|
|
reader.Position = entry_pos;
|
|
var entry = new MemoryMapEntry (i);
|
|
entry.Deserialize (context, reader);
|
|
Dir.Add (entry);
|
|
entry_pos += EntryLength;
|
|
}
|
|
}
|
|
}
|
|
|
|
internal class DirectorEntry : PackedEntry
|
|
{
|
|
public int Id;
|
|
public string FourCC;
|
|
}
|
|
|
|
internal class MemoryMapEntry : DirectorEntry
|
|
{
|
|
public ushort Flags;
|
|
|
|
public MemoryMapEntry (int id = 0)
|
|
{
|
|
Id = id;
|
|
}
|
|
|
|
public void Deserialize (SerializationContext context, Reader reader)
|
|
{
|
|
FourCC = reader.ReadFourCC();
|
|
Size = reader.ReadU32();
|
|
Offset = reader.ReadU32() + 8;
|
|
Flags = reader.ReadU16();
|
|
reader.ReadI32(); // next
|
|
UnpackedSize = Size;
|
|
IsPacked = false;
|
|
}
|
|
}
|
|
|
|
internal class AfterBurnerEntry : DirectorEntry
|
|
{
|
|
public int CompMethod;
|
|
|
|
public void Deserialize (SerializationContext context, Reader reader)
|
|
{
|
|
Id = reader.ReadVarInt();
|
|
Offset = reader.ReadVarInt();
|
|
Size = (uint)reader.ReadVarInt();
|
|
UnpackedSize = (uint)reader.ReadVarInt();
|
|
CompMethod = reader.ReadVarInt(); // assume zlib
|
|
FourCC = reader.ReadFourCC();
|
|
IsPacked = Size != UnpackedSize;
|
|
}
|
|
}
|
|
|
|
internal class Reader
|
|
{
|
|
Stream m_input;
|
|
byte[] m_buffer = new byte[4];
|
|
|
|
public Reader (Stream input, ByteOrder e = ByteOrder.LittleEndian) : this (input, Encodings.cp932, e)
|
|
{
|
|
}
|
|
|
|
public Reader (Stream input, Encoding enc, ByteOrder e = ByteOrder.LittleEndian)
|
|
{
|
|
m_input = input;
|
|
Encoding = enc;
|
|
SetByteOrder (e);
|
|
}
|
|
|
|
public Stream Source => m_input;
|
|
|
|
public ByteOrder ByteOrder { get; private set; }
|
|
|
|
public Encoding Encoding { get; set; }
|
|
|
|
public long Position
|
|
{
|
|
get => m_input.Position;
|
|
set => m_input.Position = value;
|
|
}
|
|
|
|
private Func<ushort> ToU16;
|
|
private Func<uint> ToU32;
|
|
|
|
public void SetByteOrder (ByteOrder e)
|
|
{
|
|
this.ByteOrder = e;
|
|
if (ByteOrder.LittleEndian == e)
|
|
{
|
|
ToU16 = () => LittleEndian.ToUInt16 (m_buffer, 0);
|
|
ToU32 = () => LittleEndian.ToUInt32 (m_buffer, 0);
|
|
}
|
|
else
|
|
{
|
|
ToU16 = () => BigEndian.ToUInt16 (m_buffer, 0);
|
|
ToU32 = () => BigEndian.ToUInt32 (m_buffer, 0);
|
|
}
|
|
}
|
|
|
|
static Dictionary<uint, string> KnownFourCC = new Dictionary<uint, string>();
|
|
|
|
public string ReadFourCC ()
|
|
{
|
|
uint signature = ReadU32();
|
|
string four_cc;
|
|
if (KnownFourCC.TryGetValue (signature, out four_cc))
|
|
return four_cc;
|
|
BigEndian.Pack (signature, m_buffer, 0);
|
|
return KnownFourCC[signature] = Encoding.GetString (m_buffer, 0, 4);
|
|
}
|
|
|
|
public void Skip (int amount) => m_input.Seek (amount, SeekOrigin.Current);
|
|
|
|
public byte ReadU8 ()
|
|
{
|
|
int b = m_input.ReadByte();
|
|
if (-1 == b)
|
|
throw new EndOfStreamException();
|
|
return (byte)b;
|
|
}
|
|
|
|
public sbyte ReadI8 () => (sbyte)ReadU8();
|
|
|
|
public ushort ReadU16 ()
|
|
{
|
|
if (m_input.Read (m_buffer, 0, 2) < 2)
|
|
throw new EndOfStreamException();
|
|
return ToU16();
|
|
}
|
|
|
|
public short ReadI16 () => (short)ReadU16();
|
|
|
|
public uint ReadU32 ()
|
|
{
|
|
if (m_input.Read (m_buffer, 0, 4) < 4)
|
|
throw new EndOfStreamException();
|
|
return ToU32();
|
|
}
|
|
|
|
public int ReadI32 () => (int)ReadU32();
|
|
|
|
public byte[] ReadBytes (int length)
|
|
{
|
|
if (0 == length)
|
|
return Array.Empty<byte>();
|
|
var buffer = new byte[length];
|
|
if (m_input.Read (buffer, 0, length) < length)
|
|
throw new EndOfStreamException();
|
|
return buffer;
|
|
}
|
|
|
|
public int ReadVarInt ()
|
|
{
|
|
int n = 0;
|
|
for (int i = 0; i < 5; ++i)
|
|
{
|
|
int bits = m_input.ReadByte();
|
|
if (-1 == bits)
|
|
throw new EndOfStreamException();
|
|
n = n << 7 | bits & 0x7F;
|
|
if (0 == (bits & 0x80))
|
|
return n;
|
|
}
|
|
throw new InvalidFormatException();
|
|
}
|
|
|
|
public uint GetVarIntLength (uint i)
|
|
{
|
|
uint n = 1;
|
|
while (i > 0x7F)
|
|
{
|
|
i >>= 7;
|
|
++n;
|
|
}
|
|
return n;
|
|
}
|
|
|
|
public Reader CloneUnless (ByteOrder order)
|
|
{
|
|
if (this.ByteOrder != order)
|
|
return new Reader (this.Source, this.Encoding, order);
|
|
else
|
|
return this;
|
|
}
|
|
}
|
|
}
|