//! \file ImageKAAS.cs //! \date Sat Apr 11 03:09:41 2015 //! \brief KAAS engine image format implementation. // // Copyright (C) 2015 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.Windows; using System.Windows.Media; using System.Windows.Media.Imaging; using GameRes.Utility; namespace GameRes.Formats.KAAS { internal class PicMetaData : ImageMetaData { public int Mode; public int Key; public uint CompSize1; public uint CompSize2; public uint CompSize3; } [Export(typeof(ImageFormat))] public class PicFormat : ImageFormat { public override string Tag { get { return "PIC"; } } public override string Description { get { return "KAAS engine image format"; } } public override uint Signature { get { return 0; } } public override void Write (Stream file, ImageData image) { throw new NotImplementedException ("PicFormat.Write not implemented"); } public override ImageMetaData ReadMetaData (Stream stream) { int mode = stream.ReadByte(); switch (mode) { case 5: case 6: break; default: return null; } int key = stream.ReadByte(); var header = new byte[0x10]; if (header.Length != stream.Read (header, 0, header.Length)) return null; uint width = LittleEndian.ToUInt16 (header, 0); uint height = LittleEndian.ToUInt16 (header, 2); if (0 == width || width > 4096 || 0 == height || height > 4096) return null; var file_len = stream.Length; uint comp_size1 = LittleEndian.ToUInt32 (header, 6); uint comp_size2 = LittleEndian.ToUInt32 (header, 10); uint comp_size3 = LittleEndian.ToUInt16 (header, 14); if (comp_size1 >= file_len || comp_size2 >= file_len || comp_size3 >= file_len) return null; return new PicMetaData { Width = width, Height = height, BPP = 24, Mode = mode, Key = key, CompSize1 = comp_size1, CompSize2 = comp_size2, CompSize3 = comp_size3, }; } public override ImageData Read (Stream stream, ImageMetaData info) { var meta = info as PicMetaData; if (null == meta) throw new ArgumentException ("PicFormat.Read should be supplied with PicMetaData", "info"); stream.Position = 0x12; using (var reader = new Reader (stream, meta)) { reader.Unpack(); return ImageData.Create (meta, PixelFormats.Bgr24, null, reader.Data, (int)meta.Width*3); } } internal class Reader : IDisposable { byte[] m_comp0; byte[] m_comp1; byte[] m_comp2; byte[] m_output; int m_mode; int m_key; public byte[] Data { get { return m_output; } } public Reader (Stream file, PicMetaData info) { m_mode = info.Mode; m_key = info.Key; if (6 == info.Mode) { uint out_len = info.Width * info.Height * 3; m_output = new byte[out_len]; if (m_output.Length != file.Read (m_output, 0, m_output.Length)) throw new InvalidFormatException ("Unexpected end of file"); } else { m_comp0 = new byte[info.CompSize1]; if (m_comp0.Length != file.Read (m_comp0, 0, m_comp0.Length)) throw new InvalidFormatException ("Unexpected end of file"); m_comp1 = new byte[info.CompSize2]; if (m_comp1.Length != file.Read (m_comp1, 0, m_comp1.Length)) throw new InvalidFormatException ("Unexpected end of file"); m_comp2 = new byte[info.CompSize3]; if (m_comp2.Length != file.Read (m_comp2, 0, m_comp2.Length)) throw new InvalidFormatException ("Unexpected end of file"); uint out_len = (info.Width * info.Height + 96) * 3; m_output = new byte[out_len]; } } public void Unpack () { switch (m_mode) { case 5: Unpack5(); break; case 6: Unpack6(); break; default: throw new NotSupportedException ("[KAAS] Not supported image compression"); } } private void Unpack5 () { int i = 0; int src = 0; int dst = 0; int ctl = 1; int x = 0; for (;;) { // int type = (m_comp0[x/4] >> (x & 3)*2) & 3; if (1 == ctl) { if (x == m_comp0.Length) break; ctl = m_comp0[x++] | 0x100; } int type = ctl & 3; ctl >>= 2; int count, off; switch (type) { case 0: m_output[dst++] = m_comp1[src++]; break; case 1: count = ((m_comp2[i / 2] >> (4 * (i & 1))) & 0xf) + 2; off = m_comp1[src++] + 2; Binary.CopyOverlapped (m_output, dst-off, dst, count); dst += count; ++i; break; case 2: count = LittleEndian.ToUInt16 (m_comp1, src); if (0 == count) return; off = (count & 0xfff) + 2; count = (count >> 12) + 2; Binary.CopyOverlapped (m_output, dst-off, dst, count); dst += count; src += 2; break; default: off = (((m_comp2[i / 2] << (4 * (2 - (i & 1)))) & 0xf00) | m_comp1[src]) + 2; count = m_comp1[src+1] + 18; Binary.CopyOverlapped (m_output, dst-off, dst, count); dst += count; src += 2; ++i; break; } } } private void Unpack6 () { int conv_base = m_key & 0x3f; for (int i = 0; i < m_output.Length; ++i) m_output[i] -= ScrambleTable[conv_base + (i&0xff)]; } static readonly byte[] ScrambleTable = new byte[] { 0x29, 0x23, 0xbe, 0x84, 0xe1, 0x6c, 0xd6, 0xae, 0x52, 0x90, 0x49, 0xf1, 0xf1, 0xbb, 0xe9, 0xeb, 0xb3, 0xa6, 0xdb, 0x3c, 0x87, 0x0c, 0x3e, 0x99, 0x24, 0x5e, 0x0d, 0x1c, 0x06, 0xb7, 0x47, 0xde, 0xb3, 0x12, 0x4d, 0xc8, 0x43, 0xbb, 0x8b, 0xa6, 0x1f, 0x03, 0x5a, 0x7d, 0x09, 0x38, 0x25, 0x1f, 0x5d, 0xd4, 0xcb, 0xfc, 0x96, 0xf5, 0x45, 0x3b, 0x13, 0x0d, 0x89, 0x0a, 0x1c, 0xdb, 0xae, 0x32, 0x20, 0x9a, 0x50, 0xee, 0x40, 0x78, 0x36, 0xfd, 0x12, 0x49, 0x32, 0xf6, 0x9e, 0x7d, 0x49, 0xdc, 0xad, 0x4f, 0x14, 0xf2, 0x44, 0x40, 0x66, 0xd0, 0x6b, 0xc4, 0x30, 0xb7, 0x32, 0x3b, 0xa1, 0x22, 0xf6, 0x22, 0x91, 0x9d, 0xe1, 0x8b, 0x1f, 0xda, 0xb0, 0xca, 0x99, 0x02, 0xb9, 0x72, 0x9d, 0x49, 0x2c, 0x80, 0x7e, 0xc5, 0x99, 0xd5, 0xe9, 0x80, 0xb2, 0xea, 0xc9, 0xcc, 0x53, 0xbf, 0x67, 0xd6, 0xbf, 0x14, 0xd6, 0x7e, 0x2d, 0xdc, 0x8e, 0x66, 0x83, 0xef, 0x57, 0x49, 0x61, 0xff, 0x69, 0x8f, 0x61, 0xcd, 0xd1, 0x1e, 0x9d, 0x9c, 0x16, 0x72, 0x72, 0xe6, 0x1d, 0xf0, 0x84, 0x4f, 0x4a, 0x77, 0x02, 0xd7, 0xe8, 0x39, 0x2c, 0x53, 0xcb, 0xc9, 0x12, 0x1e, 0x33, 0x74, 0x9e, 0x0c, 0xf4, 0xd5, 0xd4, 0x9f, 0xd4, 0xa4, 0x59, 0x7e, 0x35, 0xcf, 0x32, 0x22, 0xf4, 0xcc, 0xcf, 0xd3, 0x90, 0x2d, 0x48, 0xd3, 0x8f, 0x75, 0xe6, 0xd9, 0x1d, 0x2a, 0xe5, 0xc0, 0xf7, 0x2b, 0x78, 0x81, 0x87, 0x44, 0x0e, 0x5f, 0x50, 0x00, 0xd4, 0x61, 0x8d, 0xbe, 0x7b, 0x05, 0x15, 0x07, 0x3b, 0x33, 0x82, 0x1f, 0x18, 0x70, 0x92, 0xda, 0x64, 0x54, 0xce, 0xb1, 0x85, 0x3e, 0x69, 0x15, 0xf8, 0x46, 0x6a, 0x04, 0x96, 0x73, 0x0e, 0xd9, 0x16, 0x2f, 0x67, 0x68, 0xd4, 0xf7, 0x4a, 0x4a, 0xd0, 0x57, 0x68, 0x76, 0xfa, 0x16, 0xbb, 0x11, 0xad, 0xae, 0x24, 0x88, 0x79, 0xfe, 0x52, 0xdb, 0x25, 0x43, 0xe5, 0x3c, 0xf4, 0x45, 0xd3, 0xd8, 0x28, 0xce, 0x0b, 0xf5, 0xc5, 0x60, 0x59, 0x3d, 0x97, 0x27, 0x8a, 0x59, 0x76, 0x2d, 0xd0, 0xc2, 0xc9, 0xcd, 0x68, 0xd4, 0x49, 0x6a, 0x79, 0x25, 0x08, 0x61, 0x40, 0x14, 0xb1, 0x3b, 0x6a, 0xa5, 0x11, 0x28, 0xc1, 0x8c, 0xd6, 0xa9, 0x0b, 0x87, 0x97, 0x8c, 0x2f, 0xf1, }; #region IDisposable Members public void Dispose () { GC.SuppressFinalize (this); } #endregion } } }