//! \file ArcDAT.cs //! \date Sat Jan 21 18:32:40 2017 //! \brief 0verflow resource archive. // // Copyright (C) 2017 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; using System.Collections.Generic; using System.ComponentModel.Composition; using System.IO; using System.Text; namespace GameRes.Formats.GameSystem { [Export(typeof(ArchiveFormat))] public class DatOpener : ArchiveFormat { public override string Tag { get { return "DAT/0verflow"; } } public override string Description { get { return "0verflow 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 <= 2 || index_size >= (uint.MaxValue >> 9)) return null; index_size <<= 9; if (index_size >= file.MaxOffset) return null; uint index_offset = 0x400; long offset = (long)file.View.ReadUInt32 (index_offset+12) << 9; if (offset != index_size) return null; var dir = new List<Entry>(); var entry_buf = file.View.ReadBytes (index_offset, 12); while (!Array.TrueForAll (entry_buf, x => x == 0xFF)) { index_offset += 0x10; if (index_offset >= index_size) return null; var name = RestoreName (entry_buf); var entry = FormatCatalog.Instance.Create<Entry> (name); file.View.Read (index_offset, entry_buf, 0, 12); long next_offset = (long)file.View.ReadUInt32 (index_offset+12) << 9; if (next_offset < offset || next_offset > file.MaxOffset) return null; if (name.EndsWith (".CRGB") || name.EndsWith (".CHAR")) entry.Type = "image"; entry.Offset = offset; entry.Size = (uint)(next_offset - offset); dir.Add (entry); offset = next_offset; } if (0 == dir.Count) return null; return new ArcFile (file, this, dir); } static string RestoreName (byte[] index) { var name_buf = new byte[0x10]; int dst = 0; for (int i = 0; i < 12; i += 3) { int word = index[i] << 16 | index[i+1] << 8 | index[i+2]; name_buf[dst++] = (byte)(0x20 + ((word >> 18) & 0x3F)); name_buf[dst++] = (byte)(0x20 + ((word >> 12) & 0x3F)); name_buf[dst++] = (byte)(0x20 + ((word >> 6) & 0x3F)); name_buf[dst++] = (byte)(0x20 + (word & 0x3F)); } int name_end = Array.IndexOf<byte> (name_buf, 0x20, 0, 12); if (0 == name_end) throw new InvalidFormatException(); if (-1 == name_end) name_end = 12; var name = Encoding.ASCII.GetString (name_buf, 0, name_end); int ext_end = Array.IndexOf<byte> (name_buf, 0x20, 12, 4); if (12 == ext_end) return name; if (-1 == ext_end) ext_end = 16; var ext = Encoding.ASCII.GetString (name_buf, 12, ext_end-12); return name + '.' + ext; } public override IImageDecoder OpenImage (ArcFile arc, Entry entry) { if (entry.Name.EndsWith (".BGD") || entry.Name.EndsWith (".CRGB")) { var input = arc.File.CreateStream (entry.Offset, entry.Size); var info = new ImageMetaData { Width = 800, Height = 600, BPP = 24 }; return new CgdReader (input, info); } else if (entry.Name.EndsWith (".CHAR")) { var input = arc.File.CreateStream (entry.Offset, entry.Size); var info = new ChrMetaData { Width = 800, Height = 600, BPP = 32, DataOffset = 0, RgbSize = (int)input.Length, }; return new ChrReader (input, info); } return base.OpenImage (arc, entry); } } }