mirror of
https://github.com/crskycode/GARbro.git
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404 lines
15 KiB
C#
404 lines
15 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 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.Diagnostics;
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using System.Windows.Media;
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using System.Windows.Media.Imaging;
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using GameRes.Formats.Strings;
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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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[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 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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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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if (meta.AddSize > 0)
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{
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Trace.WriteLine (string.Format ("{0} bytes of additional data", meta.AddSize), "RctFormat.Read");
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file.Position = meta.DataOffset;
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byte[] data = new byte[meta.AddSize];
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if (data.Length != file.Read (data, 0, data.Length))
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return null;
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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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{
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throw new NotImplementedException ("RCT image decryption is not implemented");
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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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byte[] pixels = reader.Data;
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var bitmap = BitmapSource.Create ((int)meta.Width, (int)meta.Height, 96, 96,
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PixelFormats.Bgr24, null, pixels, (int)meta.Width*3);
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bitmap.Freeze();
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return new ImageData (bitmap, meta);
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}
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}
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public override void Write (Stream file, ImageData image)
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{
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throw new NotImplementedException ("RctFormat.Write is not implemented.");
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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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private 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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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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static internal void CopyOverlapped (byte[] data, int src, int dst, int count)
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{
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int preceding = dst-src;
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while (count > 0)
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{
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if (preceding > count)
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preceding = count;
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Array.Copy (data, src, data, dst, preceding);
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src = dst;
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dst += preceding;
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count -= preceding;
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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;
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}
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}
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#endregion
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}
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}
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[Export(typeof(ImageFormat))]
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public class Rc8Format : ImageFormat
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{
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public override string Tag { get { return "RC8"; } }
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public override string Description { get { return "Majiro game engine indexed image format"; } }
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public override uint Signature { get { return 0x9a925a98; } }
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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 (0x38 != id)
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return null;
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id = stream.ReadByte();
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if (0x5f != id)
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return null;
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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)
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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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if (width > 0x8000 || height > 0x8000)
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return null;
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return new ImageMetaData
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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 = 8,
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};
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}
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}
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public override ImageData Read (Stream file, ImageMetaData info)
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{
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file.Position = 0x14;
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using (var reader = new Reader (file, info))
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{
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reader.Unpack();
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byte[] pixels = reader.Data;
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var palette = new BitmapPalette (reader.Palette);
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var bitmap = BitmapSource.Create ((int)info.Width, (int)info.Height, 96, 96,
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PixelFormats.Indexed8, palette, pixels, (int)info.Width);
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bitmap.Freeze();
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return new ImageData (bitmap, info);
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}
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}
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public override void Write (Stream file, ImageData image)
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{
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throw new NotImplementedException ("Rc8Format.Write is not implemented.");
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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 Color[] m_palette;
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private byte[] m_data;
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public Color[] Palette { get { return m_palette; } }
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public byte[] Data { get { return m_data; } }
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public Reader (Stream file, ImageMetaData info)
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{
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m_width = info.Width;
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var palette_data = new byte[0x300];
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if (palette_data.Length != file.Read (palette_data, 0, palette_data.Length))
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throw new InvalidFormatException();
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m_palette = new Color[0x100];
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for (int i = 0; i < 0x100; ++i)
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{
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m_palette[i] = Color.FromRgb (palette_data[i*3], palette_data[i*3+1], palette_data[i*3+2]);
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}
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m_data = new byte[m_width * info.Height];
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m_input = new BinaryReader (file, Encoding.ASCII, true);
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}
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private static readonly sbyte[] ShiftTable = new sbyte[] {
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-16, -32, -48, -64,
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49, 33, 17, 1, -15, -31, -47,
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34, 18, 2, -14, -30,
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};
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public void Unpack ()
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{
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int data_pos = 0;
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int eax = 0;
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int pixels_remaining = m_data.Length;
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while (pixels_remaining > 0)
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{
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int count = eax + 1;
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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 >> 3;
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eax &= 7;
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if (7 == eax)
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eax += m_input.ReadUInt16();
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count = eax + 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 & 0x0f];
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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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if (shift >= 0 || data_pos+shift < 0)
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throw new InvalidFormatException();
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RctFormat.Reader.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;
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}
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}
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#endregion
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}
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}
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}
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