//! \file ArcDAT.cs //! \date 2018 Aug 30 //! \brief Unity GX4Lib resource archive. // // Copyright (C) 2018 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 System.ComponentModel.Composition; using System.IO; using System.Linq; using System.Windows.Media; using GameRes.Gx4Lib; using GameRes.Utility; namespace GameRes.Formats.Unity.Gx4Lib { [Export(typeof(ArchiveFormat))] public class DatOpener : ArchiveFormat { public override string Tag { get { return "DAT/GX4LIB"; } } public override string Description { get { return "Unity GX4Lib resource archive"; } } public override uint Signature { get { return 0; } } public override bool IsHierarchic { get { return false; } } public override bool CanWrite { get { return false; } } public override ArcFile TryOpen (ArcView file) { uint index_size = file.View.ReadUInt32 (0); if (index_size <= 12 || index_size >= file.MaxOffset) return null; if (file.View.ReadInt32 (5) != 1 || file.View.ReadInt32 (9) != -1) return null; using (var hstream = file.CreateStream (4, index_size)) { var pf = new PackageFile(); var index = pf.Deserialize (hstream); if (null == index) return null; string type = ""; if (index is PFAudioHeaders) type = "audio"; else if (index is PFImageHeaders) type = "image"; uint data_offset = index_size + 4; var dir = index.headers.Select (h => new PackedEntry { Name = h.FileName, Type = type, Offset = h.readStartBytePos + data_offset, Size = (uint)h.ByteLength } as Entry).ToList(); return new ArcFile (file, this, dir); } } public override Stream OpenEntry (ArcFile arc, Entry entry) { if (arc.File.View.AsciiEqual (entry.Offset, "UnityRaw")) return OpenUnityRaw (arc, entry); var pent = (PackedEntry)entry; if (!pent.IsPacked) { byte id = arc.File.View.ReadByte (entry.Offset); uint packed_size = arc.File.View.ReadUInt32 (entry.Offset+1); if ((id & ~1) != 0x5E || packed_size != entry.Size) return base.OpenEntry (arc, entry); pent.IsPacked = 0 != (id & 1); pent.UnpackedSize = arc.File.View.ReadUInt32 (entry.Offset+5); } if (!pent.IsPacked) return arc.File.CreateStream (pent.Offset+9, pent.UnpackedSize); var data = new byte[pent.UnpackedSize]; using (var input = arc.File.CreateStream (pent.Offset+9, pent.Size)) QlzUnpack (input, data); return new BinMemoryStream (data, entry.Name); } public override IImageDecoder OpenImage (ArcFile arc, Entry entry) { var input = arc.OpenBinaryEntry (entry); int length = (int)(input.Length - 0x10); if ((length & 3) != 0) return ImageFormatDecoder.Create (input); uint width = input.ReadUInt32(); uint height = input.ReadUInt32(); int buf_width = input.ReadInt32(); int buf_height = input.ReadInt32(); var info = new ImageMetaData { Width = width, Height = height, BPP = 32 }; return new Gx4ImageDecoder (input, info); } Stream OpenUnityRaw (ArcFile arc, Entry entry) { using (var stream = arc.File.CreateStream (entry.Offset, entry.Size)) using (var input = new AssetReader (stream)) { var signature = input.ReadCString(); if (signature != "UnityRaw") return base.OpenEntry (arc, entry); int format = input.ReadInt32(); input.ReadCString(); input.ReadCString(); uint file_size = input.ReadUInt32(); if (file_size != entry.Size) return base.OpenEntry (arc, entry); uint header_size = input.ReadUInt32(); int entry_count = input.ReadInt32(); int bundle_count = input.ReadInt32(); if (entry_count != 1 || bundle_count != 1) return base.OpenEntry (arc, entry); input.Position = header_size; int count = input.ReadInt32(); long asset_pos = input.Position; input.ReadCString(); // asset_name header_size = input.ReadUInt32(); uint asset_size = input.ReadUInt32(); long base_pos = asset_pos + header_size - 4; input.Position = base_pos; var index = new ResourcesAssetsDeserializer (arc.File.Name); var dir = index.Parse (input, base_pos); if (null == dir || 0 == dir.Count) return base.OpenEntry (arc, entry);; return arc.File.CreateStream (entry.Offset + dir[0].Offset, dir[0].Size); } } void QlzUnpack (IBinaryStream input, byte[] output) { int dst = 0; uint bits = 1; int output_last = output.Length - 11; while (dst < output.Length) { if (1 == bits) { bits = input.ReadUInt32(); } if ((bits & 1) == 1) { int ctl = input.PeekByte(); int offset, count = 3; if ((ctl & 3) == 0) { offset = input.ReadUInt8() >> 2; } else if ((ctl & 2) == 0) { offset = input.ReadUInt16() >> 2; } else if ((ctl & 1) == 0) { offset = input.ReadUInt16() >> 6; count += ((ctl >> 2) & 0xF); } else if ((ctl & 0x7F) != 3) { offset = (input.ReadInt24() >> 7) & 0x1FFFF; count += ((ctl >> 2) & 0x1F) - 1; } else { uint v = input.ReadUInt32(); offset = (int)(v >> 15); count += (int)((v >> 7) & 0xFF); } Binary.CopyOverlapped (output, dst-offset, dst, count); dst += count; } else { if (dst > output_last) break; output[dst++] = input.ReadUInt8(); } bits >>= 1; } while (dst < output.Length) { if (1 == bits) { input.Seek (4, SeekOrigin.Current); bits = 0x80000000u; } output[dst++] = input.ReadUInt8(); bits >>= 1; } } } internal class Gx4ImageDecoder : BinaryImageDecoder { public Gx4ImageDecoder (IBinaryStream input, ImageMetaData info) : base (input, info) { } protected override ImageData GetImageData () { m_input.Position = 0x10; int stride = (int)Info.Width * 4; var pixels = m_input.ReadBytes (stride * (int)Info.Height); for (int i = 0; i < pixels.Length; i += 4) { byte t = pixels[i]; pixels[i] = pixels[i+2]; pixels[i+2] = t; } return ImageData.CreateFlipped (Info, PixelFormats.Bgra32, null, pixels, stride); } } }