mirror of
https://github.com/crskycode/GARbro.git
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389 lines
13 KiB
C#
389 lines
13 KiB
C#
//! \file Asset.cs
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//! \date Wed Apr 05 18:58:07 2017
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//! \brief Unity asset class.
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//
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// Based on the [UnityPack](https://github.com/HearthSim/UnityPack)
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//
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// Copyright (c) Jerome Leclanche
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//
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// C# port copyright (C) 2017 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 deal
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// in the Software without restriction, including without limitation the rights
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// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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// 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 FROM,
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// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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// 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.Diagnostics;
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using System.IO;
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using System.Text;
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using GameRes.Utility;
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namespace GameRes.Formats.Unity
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{
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internal class Asset
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{
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int m_format;
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uint m_data_offset;
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bool m_is_little_endian;
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UnityTypeData m_tree = new UnityTypeData();
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Dictionary<long, int> m_adds;
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List<AssetRef> m_refs;
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Dictionary<int, TypeTree> m_types = new Dictionary<int, TypeTree>();
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Dictionary<long, UnityObject> m_objects = new Dictionary<long, UnityObject>();
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public int Format { get { return m_format; } }
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public bool IsLittleEndian { get { return m_is_little_endian; } }
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public long DataOffset { get { return m_data_offset; } }
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public UnityTypeData Tree { get { return m_tree; } }
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public IEnumerable<UnityObject> Objects { get { return m_objects.Values; } }
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public void Load (AssetReader input)
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{
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input.ReadInt32(); // header_size
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input.ReadUInt32(); // file_size
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m_format = input.ReadInt32();
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m_data_offset = input.ReadUInt32();
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if (m_format >= 9)
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m_is_little_endian = 0 == input.ReadInt32();
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input.SetupReaders (this);
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m_tree.Load (input);
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bool long_ids = Format >= 14;
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if (Format >= 7 && Format < 14)
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long_ids = 0 != input.ReadInt32();
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input.SetupReadId (long_ids);
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int obj_count = input.ReadInt32();
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for (int i = 0; i < obj_count; ++i)
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{
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input.Align();
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var obj = new UnityObject (this);
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obj.Load (input);
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RegisterObject (obj);
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}
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if (Format >= 11)
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{
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int count = input.ReadInt32();
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m_adds = new Dictionary<long, int> (count);
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for (int i = 0; i < count; ++i)
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{
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input.Align();
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var id = input.ReadId();
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m_adds[id] = input.ReadInt32();
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}
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}
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if (Format >= 6)
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{
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int count = input.ReadInt32();
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m_refs = new List<AssetRef> (count);
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for (int i = 0; i < count; ++i)
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{
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var asset_ref = AssetRef.Load (input);
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m_refs.Add (asset_ref);
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}
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}
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input.ReadCString();
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}
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void RegisterObject (UnityObject obj)
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{
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if (m_tree.TypeTrees.ContainsKey (obj.TypeId))
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{
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m_types[obj.TypeId] = m_tree.TypeTrees[obj.TypeId];
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}
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else if (!m_types.ContainsKey (obj.TypeId))
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{
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/*
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var trees = TypeTree.Default (this).TypeTrees;
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if (trees.ContainsKey (obj.ClassId))
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{
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m_types[obj.TypeId] = trees[obj.ClassId];
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}
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else
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*/
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{
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Trace.WriteLine (string.Format ("Unknown type id {0}", obj.ClassId.ToString()), "[Unity.Asset]");
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m_types[obj.TypeId] = null;
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}
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}
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if (m_objects.ContainsKey (obj.PathId))
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throw new ApplicationException (string.Format ("Duplicate asset object {0} (PathId: {1})", obj, obj.PathId));
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m_objects[obj.PathId] = obj;
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}
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}
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internal class AssetRef
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{
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public string AssetPath;
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public Guid Guid;
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public int Type;
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public string FilePath;
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public object Asset;
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public static AssetRef Load (AssetReader reader)
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{
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var r = new AssetRef();
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r.AssetPath = reader.ReadCString();
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r.Guid = new Guid (reader.ReadBytes (16));
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r.Type = reader.ReadInt32();
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r.FilePath = reader.ReadCString();
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r.Asset = null;
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return r;
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}
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}
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internal class UnityObject
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{
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public Asset Asset;
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public long PathId;
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public long Offset;
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public uint Size;
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public int TypeId;
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public int ClassId;
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public bool IsDestroyed;
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public UnityObject (Asset owner)
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{
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Asset = owner;
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}
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public AssetReader Open (Stream input)
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{
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var stream = new StreamRegion (input, Offset, Size, true);
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var reader = new AssetReader (stream, "");
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reader.SetupReaders (Asset);
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return reader;
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}
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public void Load (AssetReader reader)
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{
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PathId = reader.ReadId();
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Offset = reader.ReadUInt32() + Asset.DataOffset;
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Size = reader.ReadUInt32();
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if (Asset.Format < 17)
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{
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TypeId = reader.ReadInt32();
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ClassId = reader.ReadInt16();
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}
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else
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{
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var type_id = reader.ReadInt32();
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var class_id = Asset.Tree.ClassIds[type_id];
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TypeId = class_id;
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ClassId = class_id;
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}
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if (Asset.Format <= 10)
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IsDestroyed = reader.ReadInt16() != 0;
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if (Asset.Format >= 11 && Asset.Format < 17)
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reader.ReadInt16();
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if (Asset.Format >= 15 && Asset.Format < 17)
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reader.ReadByte();
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}
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public string Type {
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get {
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var type_tree = Asset.Tree.TypeTrees;
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if (type_tree.ContainsKey (TypeId))
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return type_tree[TypeId].Type;
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return string.Format ("[TypeId:{0}]", TypeId);
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}
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}
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public override string ToString ()
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{
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return string.Format ("<{0} {1}>", Type, ClassId);
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}
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}
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internal class TypeTree
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{
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int m_format;
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List<TypeTree> m_children = new List<TypeTree>();
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public int Version;
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public bool IsArray;
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public string Type;
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public string Name;
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public int Size;
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public uint Index;
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public int Flags;
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public IList<TypeTree> Children { get { return m_children; } }
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static readonly string Null = "(null)";
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static readonly Lazy<byte[]> StringsDat = new Lazy<byte[]> (() => LoadResource ("strings.dat"));
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public TypeTree (int format)
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{
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m_format = format;
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}
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public void Load (AssetReader reader)
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{
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if (10 == m_format || m_format >= 12)
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LoadBlob (reader);
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else
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LoadRaw (reader);
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}
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void LoadRaw (AssetReader reader)
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{
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Type = reader.ReadCString();
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Name = reader.ReadCString();
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Size = reader.ReadInt32();
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Index = reader.ReadUInt32();
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IsArray = reader.ReadInt32() != 0;
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Version = reader.ReadInt32();
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Flags = reader.ReadInt32();
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int count = reader.ReadInt32();
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for (int i = 0; i < count; ++i)
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{
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var child = new TypeTree (m_format);
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child.Load (reader);
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Children.Add (child);
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}
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}
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byte[] m_data;
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void LoadBlob (AssetReader reader)
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{
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int count = reader.ReadInt32();
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int buffer_bytes = reader.ReadInt32();
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var node_data = reader.ReadBytes (24 * count);
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m_data = reader.ReadBytes (buffer_bytes);
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var parents = new Stack<TypeTree>();
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parents.Push (this);
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using (var buf = new BinMemoryStream (node_data))
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{
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for (int i = 0; i < count; ++i)
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{
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int version = buf.ReadInt16();
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int depth = buf.ReadUInt8();
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TypeTree current;
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if (0 == depth)
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{
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current = this;
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}
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else
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{
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while (parents.Count > depth)
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parents.Pop();
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current = new TypeTree (m_format);
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parents.Peek().Children.Add (current);
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parents.Push (current);
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}
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current.Version = version;
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current.IsArray = buf.ReadUInt8() != 0;
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current.Type = GetString (buf.ReadInt32());
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current.Name = GetString (buf.ReadInt32());
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current.Size = buf.ReadInt32();
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current.Index = buf.ReadUInt32();
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current.Flags = buf.ReadInt32();
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}
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}
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}
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string GetString (int offset)
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{
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byte[] strings;
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if (offset < 0)
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{
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offset &= 0x7FFFFFFF;
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strings = StringsDat.Value;
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}
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else if (offset < m_data.Length)
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strings = m_data;
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else
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return Null;
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return Binary.GetCString (strings, offset, strings.Length-offset, Encoding.UTF8);
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}
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internal static byte[] LoadResource (string name)
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{
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var res = EmbeddedResource.Load (name, typeof(TypeTree));
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if (null == res)
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throw new FileNotFoundException ("Resource not found.", name);
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return res;
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}
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}
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internal class UnityTypeData
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{
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string m_version;
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List<int> m_class_ids = new List<int> ();
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Dictionary<int, byte[]> m_hashes = new Dictionary<int, byte[]> ();
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Dictionary<int, TypeTree> m_type_trees = new Dictionary<int, TypeTree> ();
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public string Version { get { return m_version; } }
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public IList<int> ClassIds { get { return m_class_ids; } }
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public IDictionary<int, byte[]> Hashes { get { return m_hashes; } }
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public IDictionary<int, TypeTree> TypeTrees { get { return m_type_trees; } }
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public void Load (AssetReader reader)
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{
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int format = reader.Format;
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m_version = reader.ReadCString();
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var platform = reader.ReadInt32 ();
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if (format >= 13)
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{
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bool has_type_trees = reader.ReadBool ();
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int count = reader.ReadInt32 ();
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for (int i = 0; i < count; ++i)
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{
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int class_id = reader.ReadInt32 ();
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if (format >= 17)
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{
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reader.ReadByte ();
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int script_id = reader.ReadInt16 ();
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if (114 == class_id)
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{
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if (script_id >= 0)
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class_id = -2 - script_id;
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else
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class_id = -1;
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}
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}
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m_class_ids.Add (class_id);
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byte[] hash = reader.ReadBytes (class_id < 0 ? 0x20 : 0x10);
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m_hashes[class_id] = hash;
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if (has_type_trees)
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{
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var tree = new TypeTree (format);
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tree.Load (reader);
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m_type_trees[class_id] = tree;
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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 count = reader.ReadInt32 ();
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for (int i = 0; i < count; ++i)
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{
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int class_id = reader.ReadInt32 ();
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var tree = new TypeTree (format);
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tree.Load (reader);
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m_type_trees[class_id] = tree;
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}
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}
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}
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}
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}
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