mirror of
https://github.com/crskycode/GARbro.git
synced 2024-11-30 17:05:37 +08:00
351 lines
12 KiB
C#
351 lines
12 KiB
C#
//! \file ImageGYU.cs
|
|
//! \date Mon Nov 02 00:38:41 2015
|
|
//! \brief ExHIBIT engine image format.
|
|
//
|
|
// Copyright (C) 2015-2016 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.ComponentModel.Composition;
|
|
using System.Collections.Generic;
|
|
using System.IO;
|
|
using System.Linq;
|
|
using System.Windows.Media.Imaging;
|
|
using System.Windows.Media;
|
|
using GameRes.Utility;
|
|
using GameRes.Compression;
|
|
using GameRes.Cryptography;
|
|
using GameRes.Formats.Strings;
|
|
using GameRes.Formats.Properties;
|
|
|
|
namespace GameRes.Formats.ExHibit
|
|
{
|
|
internal class GyuMetaData : ImageMetaData
|
|
{
|
|
public int Flags;
|
|
public int CompressionMode;
|
|
public uint Key;
|
|
public int DataSize;
|
|
public int AlphaSize;
|
|
public int PaletteSize;
|
|
}
|
|
|
|
[Serializable]
|
|
public class GyuMap : ResourceScheme
|
|
{
|
|
public Dictionary<string, Dictionary<int, uint>> KnownKeys;
|
|
}
|
|
|
|
[Export(typeof(ImageFormat))]
|
|
public class GyuFormat : ImageFormat
|
|
{
|
|
public override string Tag { get { return "GYU"; } }
|
|
public override string Description { get { return "ExHIBIT engine image format"; } }
|
|
public override uint Signature { get { return 0x1A555947; } } // 'GYU'
|
|
|
|
public static Dictionary<string, Dictionary<int, uint>> KnownKeys = new Dictionary<string, Dictionary<int, uint>>();
|
|
|
|
public override ResourceScheme Scheme
|
|
{
|
|
get { return new GyuMap { KnownKeys = KnownKeys }; }
|
|
set { KnownKeys = ((GyuMap)value).KnownKeys; }
|
|
}
|
|
|
|
public override ImageMetaData ReadMetaData (IBinaryStream stream)
|
|
{
|
|
stream.Position = 4;
|
|
return new GyuMetaData
|
|
{
|
|
Flags = stream.ReadUInt16(),
|
|
CompressionMode = stream.ReadUInt16(),
|
|
Key = stream.ReadUInt32(),
|
|
BPP = stream.ReadInt32(),
|
|
Width = stream.ReadUInt32(),
|
|
Height = stream.ReadUInt32(),
|
|
DataSize = stream.ReadInt32(),
|
|
AlphaSize = stream.ReadInt32(),
|
|
PaletteSize = stream.ReadInt32(),
|
|
};
|
|
}
|
|
|
|
IDictionary<int, uint> CurrentMap = null;
|
|
|
|
public override ImageData Read (IBinaryStream stream, ImageMetaData info)
|
|
{
|
|
var meta = (GyuMetaData)info;
|
|
if (0 == meta.Key)
|
|
{
|
|
bool got_key = false;
|
|
var name = Path.GetFileNameWithoutExtension (meta.FileName);
|
|
int num;
|
|
if (int.TryParse (name, out num))
|
|
{
|
|
if (null == CurrentMap)
|
|
CurrentMap = QueryScheme();
|
|
got_key = CurrentMap != null && CurrentMap.TryGetValue (num, out meta.Key);
|
|
}
|
|
if (!got_key)
|
|
{
|
|
CurrentMap = null;
|
|
throw new UnknownEncryptionScheme ("Unknown image encryption key");
|
|
}
|
|
}
|
|
var reader = new GyuReader (stream.AsStream, meta);
|
|
reader.Unpack();
|
|
return ImageData.CreateFlipped (meta, reader.Format, reader.Palette, reader.Data, reader.Stride);
|
|
}
|
|
|
|
public override void Write (Stream file, ImageData image)
|
|
{
|
|
throw new System.NotImplementedException ("GyuFormat.Write not implemented");
|
|
}
|
|
|
|
private IDictionary<int, uint> QueryScheme ()
|
|
{
|
|
if (0 == KnownKeys.Count)
|
|
return null;
|
|
if (1 == KnownKeys.Count)
|
|
return KnownKeys.First().Value;
|
|
var options = Query<GyuOptions> (arcStrings.GYUImageEncrypted);
|
|
return options.Scheme;
|
|
}
|
|
|
|
public override ResourceOptions GetDefaultOptions ()
|
|
{
|
|
return new GyuOptions { Scheme = GetScheme (Settings.Default.GYUTitle) };
|
|
}
|
|
|
|
public override object GetAccessWidget ()
|
|
{
|
|
return new GUI.WidgetGYU();
|
|
}
|
|
|
|
Dictionary<int, uint> GetScheme (string title)
|
|
{
|
|
Dictionary<int, uint> scheme = null;
|
|
KnownKeys.TryGetValue (title, out scheme);
|
|
return scheme;
|
|
}
|
|
}
|
|
|
|
internal sealed class GyuReader
|
|
{
|
|
GyuMetaData m_info;
|
|
Stream m_input;
|
|
byte[] m_output;
|
|
int m_width;
|
|
int m_height;
|
|
|
|
public PixelFormat Format { get; private set; }
|
|
public BitmapPalette Palette { get; private set; }
|
|
public int Stride { get; private set; }
|
|
public byte[] Data { get { return m_output; } }
|
|
|
|
public GyuReader (Stream input, GyuMetaData info)
|
|
{
|
|
m_info = info;
|
|
m_width = (int)info.Width;
|
|
m_height = (int)info.Height;
|
|
Stride = (m_width * info.BPP / 8 + 3) & ~3;
|
|
m_input = input;
|
|
if (0 != m_info.AlphaSize)
|
|
Format = PixelFormats.Bgra32;
|
|
else if (32 == m_info.BPP)
|
|
Format = PixelFormats.Bgr32;
|
|
else if (24 == m_info.BPP)
|
|
Format = PixelFormats.Bgr24;
|
|
else if (8 == m_info.BPP)
|
|
Format = PixelFormats.Indexed8;
|
|
else
|
|
throw new NotSupportedException ("Not supported GYU color depth");
|
|
|
|
if (8 == m_info.BPP && 0 == m_info.PaletteSize)
|
|
throw new InvalidFormatException();
|
|
}
|
|
|
|
public void Unpack ()
|
|
{
|
|
m_input.Position = 0x24;
|
|
if (0 != m_info.PaletteSize)
|
|
Palette = ReadPalette (m_info.PaletteSize);
|
|
|
|
var packed = new byte[m_info.DataSize];
|
|
if (packed.Length != m_input.Read (packed, 0, packed.Length))
|
|
throw new EndOfStreamException();
|
|
|
|
if (m_info.Key != 0xFFFFFFFF)
|
|
Deobfuscate (packed, m_info.Key);
|
|
|
|
if (0x0100 == m_info.CompressionMode)
|
|
{
|
|
m_output = packed;
|
|
}
|
|
else
|
|
{
|
|
m_output = new byte[Stride * m_height];
|
|
if (0x0800 == m_info.CompressionMode)
|
|
UnpackGyu (packed);
|
|
else
|
|
UnpackLzss (packed);
|
|
}
|
|
if (0 != m_info.AlphaSize)
|
|
ReadAlpha();
|
|
}
|
|
|
|
void UnpackLzss (byte[] packed)
|
|
{
|
|
using (var mem = new MemoryStream (packed))
|
|
using (var lz = new LzssStream (mem))
|
|
if (m_output.Length != lz.Read (m_output, 0, m_output.Length))
|
|
throw new EndOfStreamException ();
|
|
}
|
|
|
|
void UnpackGyu (byte[] packed)
|
|
{
|
|
using (var mem = new MemoryStream (packed, 4, packed.Length-4))
|
|
using (var bits = new MsbBitStream (mem))
|
|
{
|
|
int dst = 0;
|
|
m_output[dst++] = (byte)mem.ReadByte();
|
|
while (dst < m_output.Length)
|
|
{
|
|
int b = bits.GetNextBit();
|
|
if (-1 == b)
|
|
throw new EndOfStreamException();
|
|
if (1 == b)
|
|
{
|
|
m_output[dst++] = (byte)mem.ReadByte();
|
|
continue;
|
|
}
|
|
int count;
|
|
int offset;
|
|
if (1 == bits.GetNextBit())
|
|
{
|
|
count = mem.ReadByte() << 8;
|
|
count |= mem.ReadByte();
|
|
offset = -1 << 13 | count >> 3;
|
|
count &= 7;
|
|
|
|
if (0 != count)
|
|
{
|
|
++count;
|
|
}
|
|
else
|
|
{
|
|
count = mem.ReadByte();
|
|
if (0 == count)
|
|
break;
|
|
}
|
|
}
|
|
else
|
|
{
|
|
count = 1 + bits.GetBits (2);
|
|
offset = -1 << 8 | mem.ReadByte();
|
|
}
|
|
|
|
Binary.CopyOverlapped (m_output, dst+offset, dst, ++count);
|
|
dst += count;
|
|
}
|
|
}
|
|
}
|
|
|
|
BitmapPalette ReadPalette (int colors)
|
|
{
|
|
var palette_data = new byte[colors*4];
|
|
if (palette_data.Length != m_input.Read (palette_data, 0, palette_data.Length))
|
|
throw new InvalidFormatException();
|
|
var palette = new Color[colors];
|
|
for (int i = 0; i < palette.Length; ++i)
|
|
{
|
|
int c = i * 4;
|
|
palette[i] = Color.FromRgb (palette_data[c+2], palette_data[c+1], palette_data[c]);
|
|
}
|
|
return new BitmapPalette (palette);
|
|
}
|
|
|
|
void ReadAlpha ()
|
|
{
|
|
int alpha_stride = (m_width + 3) & ~3;
|
|
Stream alpha_stream;
|
|
if (m_info.AlphaSize == alpha_stride * m_height)
|
|
alpha_stream = new StreamRegion (m_input, m_input.Position, true);
|
|
else
|
|
alpha_stream = new LzssStream (m_input, LzssMode.Decompress, true);
|
|
using (alpha_stream)
|
|
{
|
|
int src_stride = Stride;
|
|
int new_stride = m_width * 4;
|
|
bool extend_alpha = 3 != m_info.Flags;
|
|
var alpha_line = new byte[alpha_stride];
|
|
var pixels = new byte[new_stride * m_height];
|
|
for (int y = 0; y < m_height; ++y)
|
|
{
|
|
int src = y * src_stride;
|
|
int dst = y * new_stride;
|
|
if (alpha_line.Length != alpha_stream.Read (alpha_line, 0, alpha_line.Length))
|
|
throw new EndOfStreamException();
|
|
for (int x = 0; x < m_width; ++x)
|
|
{
|
|
if (8 == m_info.BPP)
|
|
{
|
|
var color = Palette.Colors[m_output[src++]];
|
|
pixels[dst++] = color.B;
|
|
pixels[dst++] = color.G;
|
|
pixels[dst++] = color.R;
|
|
}
|
|
else
|
|
{
|
|
pixels[dst++] = m_output[src++];
|
|
pixels[dst++] = m_output[src++];
|
|
pixels[dst++] = m_output[src++];
|
|
}
|
|
int alpha = alpha_line[x];
|
|
if (extend_alpha)
|
|
alpha = alpha >= 0x10 ? 0xFF : alpha * 0x10;
|
|
pixels[dst++] = (byte)alpha;
|
|
}
|
|
}
|
|
Stride = new_stride;
|
|
Palette = null;
|
|
m_output = pixels;
|
|
}
|
|
}
|
|
|
|
static void Deobfuscate (byte[] data, uint key)
|
|
{
|
|
var mt = new MersenneTwister (key);
|
|
for (int n = 0; n < 10; ++n)
|
|
{
|
|
uint i1 = mt.Rand() % (uint)data.Length;
|
|
uint i2 = mt.Rand() % (uint)data.Length;
|
|
var tmp = data[i1];
|
|
data[i1] = data[i2];
|
|
data[i2] = tmp;
|
|
}
|
|
}
|
|
}
|
|
|
|
public class GyuOptions : ResourceOptions
|
|
{
|
|
public IDictionary<int, uint> Scheme;
|
|
}
|
|
}
|