mirror of
https://github.com/crskycode/GARbro.git
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730 lines
25 KiB
C#
730 lines
25 KiB
C#
//! \file ImageRCT.cs
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//! \date Fri Aug 01 11:36:31 2014
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//! \brief RCT/RC8 image format implementation.
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//
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// Copyright (C) 2014-2015 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
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// deal in the Software without restriction, including without limitation the
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// rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
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// sell 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
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// FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
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// IN THE SOFTWARE.
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//
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using System;
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using System.IO;
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using System.Text;
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using System.Collections.Generic;
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using System.ComponentModel.Composition;
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using System.Windows;
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using System.Windows.Media;
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using System.Windows.Media.Imaging;
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using GameRes.Formats.Properties;
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using GameRes.Formats.Strings;
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using GameRes.Utility;
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namespace GameRes.Formats.Majiro
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{
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internal class RctMetaData : ImageMetaData
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{
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public int Version;
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public bool IsEncrypted;
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public uint DataOffset;
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public uint DataSize;
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public uint AddSize;
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}
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internal class RctOptions : ResourceOptions
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{
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public string Password;
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}
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[Serializable]
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public class RctScheme : ResourceScheme
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{
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public Dictionary<string, string> KnownKeys;
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}
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[Export(typeof(ImageFormat))]
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public class RctFormat : ImageFormat
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{
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public override string Tag { get { return "RCT"; } }
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public override string Description { get { return "Majiro game engine RGB image format"; } }
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public override uint Signature { get { return 0x9a925a98; } }
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public bool OverlayFrames = true;
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public static Dictionary<string, string> KnownKeys = new Dictionary<string, string>();
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public override ResourceScheme Scheme
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{
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get { return new RctScheme { KnownKeys = KnownKeys }; }
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set { KnownKeys = ((RctScheme)value).KnownKeys; }
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}
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public override ImageMetaData ReadMetaData (Stream stream)
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{
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stream.Position = 4;
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int id = stream.ReadByte();
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if (0x54 != id)
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return null;
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int encryption = stream.ReadByte();
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if (encryption != 0x43 && encryption != 0x53)
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return null;
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bool is_encrypted = 0x53 == encryption;
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int version = stream.ReadByte();
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if (0x30 != version)
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return null;
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version = stream.ReadByte() - 0x30;
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if (version != 0 && version != 1)
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return null;
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using (var reader = new BinaryReader (stream, Encoding.ASCII, true))
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{
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uint width = reader.ReadUInt32();
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uint height = reader.ReadUInt32();
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uint data_size = reader.ReadUInt32();
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uint additional_size = 0;
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if (1 == version)
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{
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additional_size = reader.ReadUInt16();
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}
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if (width > 0x8000 || height > 0x8000)
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return null;
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return new RctMetaData
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{
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Width = width,
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Height = height,
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OffsetX = 0,
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OffsetY = 0,
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BPP = 24,
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Version = version,
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IsEncrypted = is_encrypted,
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DataOffset = (uint)stream.Position,
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DataSize = data_size,
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AddSize = additional_size,
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};
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}
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}
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byte[] Key = null;
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public override ImageData Read (Stream file, ImageMetaData info)
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{
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var meta = info as RctMetaData;
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if (null == meta)
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throw new ArgumentException ("RctFormat.Read should be supplied with RctMetaData", "info");
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byte[] base_image = null;
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if (meta.FileName != null && meta.AddSize > 0 && OverlayFrames)
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base_image = ReadBaseImage (file, meta);
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var pixels = ReadPixelsData (file, meta);
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if (base_image != null)
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pixels = CombineImage (base_image, pixels);
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return ImageData.Create (meta, PixelFormats.Bgr24, null, pixels, (int)meta.Width*3);
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}
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byte[] CombineImage (byte[] base_image, byte[] overlay)
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{
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for (int i = 2; i < base_image.Length; i += 3)
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{
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if (0 == overlay[i-2] && 0 == overlay[i-1] && 0xff == overlay[i])
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{
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overlay[i-2] = base_image[i-2];
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overlay[i-1] = base_image[i-1];
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overlay[i] = base_image[i];
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}
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}
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return overlay;
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}
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byte[] ReadPixelsData (Stream file, RctMetaData meta)
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{
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file.Position = meta.DataOffset + meta.AddSize;
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if (meta.IsEncrypted)
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file = OpenEncryptedStream (file, meta.DataSize);
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try
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{
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using (var reader = new Reader (file, meta))
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{
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reader.Unpack();
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return reader.Data;
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}
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}
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catch
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{
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if (meta.IsEncrypted)
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Key = null; // probably incorrect encryption scheme caused exception, reset key
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throw;
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}
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}
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byte[] ReadBaseImage (Stream file, RctMetaData meta)
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{
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file.Position = meta.DataOffset;
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byte[] name_bin = new byte[meta.AddSize];
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if (name_bin.Length != file.Read (name_bin, 0, name_bin.Length))
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throw new EndOfStreamException();
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try
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{
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string name = Encodings.cp932.GetString (name_bin, 0, name_bin.Length-1);
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string dir_name = Path.GetDirectoryName (meta.FileName);
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name = VFS.CombinePath (dir_name, name);
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if (VFS.FileExists (name))
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{
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using (var base_file = VFS.OpenSeekableStream (name))
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{
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var base_info = ReadMetaData (base_file) as RctMetaData;
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if (null != base_info && 0 == base_info.AddSize
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&& meta.Width == base_info.Width && meta.Height == base_info.Height)
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{
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base_info.FileName = name;
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return ReadPixelsData (base_file, base_info);
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}
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}
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}
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}
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catch { /* ignore baseline image read errors */ }
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return null;
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}
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Stream OpenEncryptedStream (Stream file, uint data_size)
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{
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if (null == Key)
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{
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var password = QueryPassword();
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if (string.IsNullOrEmpty (password))
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throw new UnknownEncryptionScheme();
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Key = InitDecryptionKey (password);
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}
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byte[] data = new byte[data_size];
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if (data.Length != file.Read (data, 0, data.Length))
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throw new EndOfStreamException();
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for (int i = 0; i < data.Length; ++i)
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{
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data[i] ^= Key[i & 0x3FF];
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}
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return new MemoryStream (data);
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}
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private byte[] InitDecryptionKey (string password)
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{
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byte[] bin_pass = Encodings.cp932.GetBytes (password);
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uint crc32 = Crc32.Compute (bin_pass, 0, bin_pass.Length);
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byte[] key_table = new byte[0x400];
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unsafe
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{
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fixed (byte* key_ptr = key_table)
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{
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uint* key32 = (uint*)key_ptr;
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for (int i = 0; i < 0x100; ++i)
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*key32++ = crc32 ^ Crc32.Table[(i + crc32) & 0xFF];
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}
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}
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return key_table;
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}
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private string QueryPassword ()
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{
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var options = Query<RctOptions> (arcStrings.RCTNotice);
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return options.Password;
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}
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public override ResourceOptions GetDefaultOptions ()
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{
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return new RctOptions { Password = Settings.Default.RCTPassword };
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}
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public override ResourceOptions GetOptions (object widget)
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{
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var w = widget as GUI.WidgetRCT;
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if (null != w)
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Settings.Default.RCTPassword = w.Password.Text;
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return GetDefaultOptions();
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}
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public override object GetAccessWidget ()
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{
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return new GUI.WidgetRCT();
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}
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public override void Write (Stream file, ImageData image)
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{
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using (var writer = new Writer (file))
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writer.Pack (image.Bitmap);
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}
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internal class Writer : IDisposable
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{
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BinaryWriter m_out;
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uint[] m_input;
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int m_width;
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int m_height;
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int[] m_shift_table = new int[32];
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const int MaxThunkSize = 0xffff + 0x7f;
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const int MaxMatchSize = 0xffff;
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struct ChunkPosition
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{
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public ushort Offset;
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public ushort Length;
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}
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public Writer (Stream output)
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{
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m_out = new BinaryWriter (output, Encoding.ASCII, true);
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}
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void PrepareInput (BitmapSource bitmap)
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{
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m_width = bitmap.PixelWidth;
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m_height = bitmap.PixelHeight;
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int pixels = m_width*m_height;
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m_input = new uint[pixels];
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if (bitmap.Format != PixelFormats.Bgr32)
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{
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var converted_bitmap = new FormatConvertedBitmap();
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converted_bitmap.BeginInit();
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converted_bitmap.Source = bitmap;
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converted_bitmap.DestinationFormat = PixelFormats.Bgr32;
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converted_bitmap.EndInit();
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bitmap = converted_bitmap;
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}
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unsafe
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{
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fixed (uint* buffer = m_input)
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{
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bitmap.CopyPixels (Int32Rect.Empty, (IntPtr)buffer, pixels*4, m_width*4);
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}
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}
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InitShiftTable (m_width);
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}
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void InitShiftTable (int width)
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{
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for (int i = 0; i < 32; ++i)
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{
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int shift = Reader.ShiftTable[i];
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int shift_row = shift & 0x0f;
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shift >>= 4;
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shift_row *= width;
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shift -= shift_row;
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m_shift_table[i] = shift;
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}
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}
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List<byte> m_buffer = new List<byte>();
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int m_buffer_size;
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public void Pack (BitmapSource bitmap)
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{
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PrepareInput (bitmap);
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long data_offset = 0x14;
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m_out.BaseStream.Position = data_offset;
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uint pixel = m_input[0];
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m_out.Write ((byte)pixel);
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m_out.Write ((byte)(pixel >> 8));
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m_out.Write ((byte)(pixel >> 16));
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m_buffer.Clear();
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m_buffer_size = 0;
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int last = m_input.Length;
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int current = 1;
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while (current != last)
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{
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var chunk_pos = FindLongest (current, last);
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if (chunk_pos.Length > 0)
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{
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Flush();
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WritePos (chunk_pos);
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current += chunk_pos.Length;
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}
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else
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{
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WritePixel (m_input[current++]);
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}
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}
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Flush();
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var data_size = m_out.BaseStream.Position - data_offset;
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m_out.BaseStream.Position = 0;
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WriteHeader ((uint)data_size);
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}
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void WriteHeader (uint data_size)
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{
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m_out.Write (0x9a925a98u);
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m_out.Write (0x30304354u);
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m_out.Write (m_width);
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m_out.Write (m_height);
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m_out.Write (data_size);
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}
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void WritePixel (uint pixel)
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{
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if (MaxThunkSize == m_buffer_size)
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Flush();
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m_buffer.Add ((byte)pixel);
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m_buffer.Add ((byte)(pixel >> 8));
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m_buffer.Add ((byte)(pixel >> 16));
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++m_buffer_size;
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}
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void Flush ()
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{
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if (0 != m_buffer.Count)
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{
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if (m_buffer_size > 0x7f)
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{
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m_out.Write ((byte)0x7f);
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m_out.Write ((ushort)(m_buffer_size-0x80));
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}
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else
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m_out.Write ((byte)(m_buffer_size-1));
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foreach (var b in m_buffer)
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m_out.Write (b);
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m_buffer.Clear();
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m_buffer_size = 0;
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}
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}
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ChunkPosition FindLongest (int buf_begin, int buf_end)
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{
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buf_end = Math.Min (buf_begin + MaxMatchSize, buf_end);
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ChunkPosition pos = new ChunkPosition { Offset = 0, Length = 0 };
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for (int i = 0; i < 32; ++i)
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{
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int offset = buf_begin + m_shift_table[i];
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if (offset < 0)
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continue;
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if (m_input[offset] != m_input[buf_begin])
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continue;
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var last = Mismatch (buf_begin+1, buf_end, offset+1);
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int weight = last - offset;
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if (weight > pos.Length)
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{
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pos.Offset = (ushort)i;
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pos.Length = (ushort)weight;
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}
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}
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return pos;
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}
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int Mismatch (int first1, int last1, int first2)
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{
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while (first1 != last1 && m_input[first1] == m_input[first2])
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{
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++first1;
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++first2;
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}
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return first2;
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}
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void WritePos (ChunkPosition pos)
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{
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int code = (pos.Offset << 2) | 0x80;
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if (pos.Length > 3)
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code |= 3;
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else
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code |= pos.Length - 1;
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m_out.Write ((byte)code);
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if (pos.Length > 3)
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m_out.Write ((ushort)(pos.Length - 4));
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}
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#region IDisposable Members
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bool disposed = false;
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public void Dispose ()
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{
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Dispose (true);
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GC.SuppressFinalize (this);
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}
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protected virtual void Dispose (bool disposing)
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{
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if (!disposed)
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{
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if (disposing)
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{
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m_out.Dispose();
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}
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disposed = true;
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}
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}
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#endregion
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}
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internal class Reader : IDisposable
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{
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private BinaryReader m_input;
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private uint m_width;
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private byte[] m_data;
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public byte[] Data { get { return m_data; } }
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public Reader (Stream file, RctMetaData info)
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{
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m_width = info.Width;
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m_data = new byte[m_width * info.Height * 3];
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m_input = new BinaryReader (file, Encoding.ASCII, true);
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}
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internal static readonly sbyte[] ShiftTable = new sbyte[] {
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-16, -32, -48, -64, -80, -96,
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49, 33, 17, 1, -15, -31, -47,
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50, 34, 18, 2, -14, -30, -46,
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51, 35, 19, 3, -13, -29, -45,
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36, 20, 4, -12, -28,
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};
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public void Unpack ()
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{
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int pixels_remaining = m_data.Length;
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int data_pos = 0;
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int eax = 0;
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while (pixels_remaining > 0)
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{
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int count = eax*3 + 3;
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if (count > pixels_remaining)
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throw new InvalidFormatException();
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pixels_remaining -= count;
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if (count != m_input.Read (m_data, data_pos, count))
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throw new InvalidFormatException();
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data_pos += count;
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while (pixels_remaining > 0)
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{
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eax = m_input.ReadByte();
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if (0 == (eax & 0x80))
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{
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if (0x7f == eax)
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eax += m_input.ReadUInt16();
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break;
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}
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int shift_index = eax >> 2;
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eax &= 3;
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if (3 == eax)
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eax += m_input.ReadUInt16();
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count = eax*3 + 3;
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if (pixels_remaining < count)
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throw new InvalidFormatException();
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pixels_remaining -= count;
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int shift = ShiftTable[shift_index & 0x1f];
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int shift_row = shift & 0x0f;
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shift >>= 4;
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shift_row *= (int)m_width;
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shift -= shift_row;
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shift *= 3;
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if (shift >= 0 || data_pos+shift < 0)
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throw new InvalidFormatException();
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Binary.CopyOverlapped (m_data, data_pos+shift, data_pos, count);
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data_pos += count;
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}
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}
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}
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#region IDisposable Members
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bool disposed = false;
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public void Dispose ()
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{
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Dispose (true);
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GC.SuppressFinalize (this);
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}
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protected virtual void Dispose (bool disposing)
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{
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if (!disposed)
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{
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if (disposing)
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m_input.Dispose();
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m_input = null;
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m_data = null;
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disposed = true;
|
|
}
|
|
}
|
|
#endregion
|
|
}
|
|
}
|
|
|
|
[Export(typeof(ImageFormat))]
|
|
public class Rc8Format : ImageFormat
|
|
{
|
|
public override string Tag { get { return "RC8"; } }
|
|
public override string Description { get { return "Majiro game engine indexed image format"; } }
|
|
public override uint Signature { get { return 0x9a925a98; } }
|
|
|
|
public override ImageMetaData ReadMetaData (Stream stream)
|
|
{
|
|
stream.Position = 4;
|
|
int id = stream.ReadByte();
|
|
if (0x38 != id)
|
|
return null;
|
|
id = stream.ReadByte();
|
|
if (0x5f != id)
|
|
return null;
|
|
int version = stream.ReadByte();
|
|
if (0x30 != version)
|
|
return null;
|
|
version = stream.ReadByte() - 0x30;
|
|
if (version != 0)
|
|
return null;
|
|
|
|
using (var reader = new BinaryReader (stream, Encoding.ASCII, true))
|
|
{
|
|
uint width = reader.ReadUInt32();
|
|
uint height = reader.ReadUInt32();
|
|
if (width > 0x8000 || height > 0x8000)
|
|
return null;
|
|
return new ImageMetaData
|
|
{
|
|
Width = width,
|
|
Height = height,
|
|
OffsetX = 0,
|
|
OffsetY = 0,
|
|
BPP = 8,
|
|
};
|
|
}
|
|
}
|
|
|
|
public override ImageData Read (Stream file, ImageMetaData info)
|
|
{
|
|
file.Position = 0x14;
|
|
using (var reader = new Reader (file, info))
|
|
{
|
|
reader.Unpack();
|
|
byte[] pixels = reader.Data;
|
|
var palette = new BitmapPalette (reader.Palette);
|
|
var bitmap = BitmapSource.Create ((int)info.Width, (int)info.Height, 96, 96,
|
|
PixelFormats.Indexed8, palette, pixels, (int)info.Width);
|
|
bitmap.Freeze();
|
|
return new ImageData (bitmap, info);
|
|
}
|
|
}
|
|
|
|
public override void Write (Stream file, ImageData image)
|
|
{
|
|
throw new NotImplementedException ("Rc8Format.Write is not implemented.");
|
|
}
|
|
|
|
internal class Reader : IDisposable
|
|
{
|
|
private BinaryReader m_input;
|
|
private uint m_width;
|
|
private Color[] m_palette;
|
|
private byte[] m_data;
|
|
|
|
public Color[] Palette { get { return m_palette; } }
|
|
public byte[] Data { get { return m_data; } }
|
|
|
|
public Reader (Stream file, ImageMetaData info)
|
|
{
|
|
m_width = info.Width;
|
|
var palette_data = new byte[0x300];
|
|
if (palette_data.Length != file.Read (palette_data, 0, palette_data.Length))
|
|
throw new InvalidFormatException();
|
|
m_palette = new Color[0x100];
|
|
for (int i = 0; i < 0x100; ++i)
|
|
{
|
|
m_palette[i] = Color.FromRgb (palette_data[i*3], palette_data[i*3+1], palette_data[i*3+2]);
|
|
}
|
|
m_data = new byte[m_width * info.Height];
|
|
m_input = new BinaryReader (file, Encoding.ASCII, true);
|
|
}
|
|
|
|
private static readonly sbyte[] ShiftTable = new sbyte[] {
|
|
-16, -32, -48, -64,
|
|
49, 33, 17, 1, -15, -31, -47,
|
|
34, 18, 2, -14, -30,
|
|
};
|
|
|
|
public void Unpack ()
|
|
{
|
|
int data_pos = 0;
|
|
int eax = 0;
|
|
int pixels_remaining = m_data.Length;
|
|
while (pixels_remaining > 0)
|
|
{
|
|
int count = eax + 1;
|
|
if (count > pixels_remaining)
|
|
throw new InvalidFormatException();
|
|
pixels_remaining -= count;
|
|
|
|
if (count != m_input.Read (m_data, data_pos, count))
|
|
throw new InvalidFormatException();
|
|
data_pos += count;
|
|
|
|
while (pixels_remaining > 0)
|
|
{
|
|
eax = m_input.ReadByte();
|
|
if (0 == (eax & 0x80))
|
|
{
|
|
if (0x7f == eax)
|
|
eax += m_input.ReadUInt16();
|
|
break;
|
|
}
|
|
int shift_index = eax >> 3;
|
|
eax &= 7;
|
|
if (7 == eax)
|
|
eax += m_input.ReadUInt16();
|
|
|
|
count = eax + 3;
|
|
if (pixels_remaining < count)
|
|
throw new InvalidFormatException();
|
|
pixels_remaining -= count;
|
|
int shift = ShiftTable[shift_index & 0x0f];
|
|
int shift_row = shift & 0x0f;
|
|
shift >>= 4;
|
|
shift_row *= (int)m_width;
|
|
shift -= shift_row;
|
|
if (shift >= 0 || data_pos+shift < 0)
|
|
throw new InvalidFormatException();
|
|
Binary.CopyOverlapped (m_data, data_pos+shift, data_pos, count);
|
|
data_pos += count;
|
|
}
|
|
}
|
|
}
|
|
|
|
#region IDisposable Members
|
|
bool disposed = false;
|
|
|
|
public void Dispose ()
|
|
{
|
|
Dispose (true);
|
|
GC.SuppressFinalize (this);
|
|
}
|
|
|
|
protected virtual void Dispose (bool disposing)
|
|
{
|
|
if (!disposed)
|
|
{
|
|
if (disposing)
|
|
m_input.Dispose();
|
|
m_input = null;
|
|
m_data = null;
|
|
disposed = true;
|
|
}
|
|
}
|
|
#endregion
|
|
}
|
|
}
|
|
}
|