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(SLG): implemented TIC and TIM images.

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This commit is contained in:
morkt 2018-12-19 03:22:10 +04:00
parent 4be7aa5bee
commit 12d9027ce3
3 changed files with 175 additions and 18 deletions
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4
ArcFormats/ArcFormats.csproj
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@ -85,6 +85,7 @@
</ItemGroup>
<ItemGroup>
<Compile Include="Abel\ArcARC.cs" />
<Compile Include="Abel\ArcBIN.cs" />
<Compile Include="Abel\ArcFPK.cs" />
<Compile Include="Abel\ImageCBF.cs" />
<Compile Include="Abel\ImageGPS.cs" />
@ -122,6 +123,7 @@
<Compile Include="Artemis\ArcMJA.cs" />
<None Include="AudioAIFF.cs" />
<Compile Include="Basil\ArcMIF.cs" />
<Compile Include="Basil\AudioWHC.cs" />
<Compile Include="Basil\ImageBCF.cs" />
<Compile Include="Basil\ImageNG3.cs" />
<Compile Include="BeF\AudioVZY.cs" />
@ -300,6 +302,7 @@
<Compile Include="Seraphim\ImageCP3.cs" />
<Compile Include="ShiinaRio\ArcWARC1.0.cs" />
<Compile Include="ShiinaRio\ImageCHD.cs" />
<Compile Include="Slg\ImageTIM.cs" />
<Compile Include="Speed\ArcARC.cs" />
<Compile Include="Stack\ArcGPK.cs" />
<Compile Include="StudioSakura\ArcDAT.cs" />
@ -722,6 +725,7 @@
<Compile Include="uGOS\ArcDET.cs" />
<Compile Include="uGOS\ImageBMP.cs" />
<Compile Include="AdvSys\ArcGR2.cs" />
<Compile Include="uGOS\ImageTXT.cs" />
<Compile Include="UMeSoft\ArcMGX.cs" />
<Compile Include="UMeSoft\ArcPK.cs" />
<Compile Include="Qlie\ArcQLIE.cs" />

94
ArcFormats/Slg/ImageTIG.cs
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@ -2,7 +2,7 @@
//! \date Sat Jun 04 18:00:15 2016
//! \brief SLG system encrypted PNG images.
//
// Copyright (C) 2016 by morkt
// Copyright (C) 2016-2018 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
@ -30,7 +30,7 @@ using System.Security.Cryptography;
namespace GameRes.Formats.Slg
{
[Export(typeof(ImageFormat))]
public class TigFormat : PngFormat
public class TigFormat : ImageFormat
{
public override string Tag { get { return "TIG"; } }
public override string Description { get { return "SLG system encrypted PNG image"; } }
@ -39,18 +39,23 @@ namespace GameRes.Formats.Slg
public override ImageMetaData ReadMetaData (IBinaryStream stream)
{
using (var proxy = new ProxyStream (stream.AsStream, true))
using (var crypt = new InputCryptoStream (proxy, new TigTransform()))
using (var input = new BinaryStream (crypt, stream.Name))
return base.ReadMetaData (input);
using (var input = OpenEncrypted (stream))
return Png.ReadMetaData (input);
}
public override ImageData Read (IBinaryStream stream, ImageMetaData info)
{
using (var proxy = new ProxyStream (stream.AsStream, true))
using (var crypt = new InputCryptoStream (proxy, new TigTransform()))
using (var input = new BinaryStream (crypt, stream.Name))
return base.Read (input, info);
using (var input = OpenEncrypted (stream))
return Png.Read (input, info);
}
internal IBinaryStream OpenEncrypted (IBinaryStream stream, bool seekable = false)
{
Stream input = new ProxyStream (stream.AsStream, true);
input = new InputCryptoStream (input, new TigTransform());
if (seekable)
input = new SeekableStream (input);
return new BinaryStream (input, stream.Name);
}
public override void Write (Stream file, ImageData image)
@ -59,19 +64,51 @@ namespace GameRes.Formats.Slg
}
}
[Export(typeof(ImageFormat))]
public class TicFormat : TigFormat
{
public override string Tag { get { return "TIC"; } }
public override string Description { get { return "SLG system encrypted JPEG image"; } }
public override uint Signature { get { return 0x15A44A01; } }
public override bool CanWrite { get { return false; } }
public override ImageMetaData ReadMetaData (IBinaryStream stream)
{
using (var input = OpenEncrypted (stream, true))
return Jpeg.ReadMetaData (input);
}
public override ImageData Read (IBinaryStream stream, ImageMetaData info)
{
using (var input = OpenEncrypted (stream))
return Jpeg.Read (input, info);
}
public override void Write (Stream file, ImageData image)
{
throw new System.NotImplementedException ("TicFormat.Write not implemented");
}
}
internal sealed class TigTransform : ICryptoTransform
{
const int BlockSize = 1;
uint m_key;
const uint DefaultKey = 0x7F7F7F7F;
public bool CanReuseTransform { get { return true; } }
RandomGenerator m_rnd;
public bool CanReuseTransform { get { return false; } }
public bool CanTransformMultipleBlocks { get { return true; } }
public int InputBlockSize { get { return BlockSize; } }
public int OutputBlockSize { get { return BlockSize; } }
public TigTransform ()
public TigTransform () : this (DefaultKey)
{
m_key = 0x7F7F7F7F;
}
public TigTransform (uint key)
{
m_rnd = new RandomGenerator (key);
}
public int TransformBlock (byte[] inputBuffer, int inputOffset, int inputCount,
@ -79,9 +116,7 @@ namespace GameRes.Formats.Slg
{
for (int i = 0; i < inputCount; ++i)
{
m_key *= 0x343FD;
m_key += 0x269EC3;
outputBuffer[outputOffset+i] = (byte)(inputBuffer[inputOffset+i] - (m_key >> 16));
outputBuffer[outputOffset+i] = (byte)(inputBuffer[inputOffset+i] - m_rnd.Next());
}
return inputCount;
}
@ -95,7 +130,30 @@ namespace GameRes.Formats.Slg
public void Dispose ()
{
System.GC.SuppressFinalize (this);
}
}
internal sealed class RandomGenerator
{
uint m_seed;
public uint Seed { get { return m_seed; } }
public RandomGenerator (uint seed)
{
SRand (seed);
}
public void SRand (uint seed)
{
m_seed = seed;
}
public uint Next ()
{
m_seed *= 0x343FD;
m_seed += 0x269EC3;
return m_seed >> 16;
}
};
}

95
ArcFormats/Slg/ImageTIM.cs Normal file
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@ -0,0 +1,95 @@
//! \file ImageTIM.cs
//! \date 2018 Dec 04
//! \brief SLG system encrypted image.
//
// Copyright (C) 2018 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.ComponentModel.Composition;
using System.IO;
using System.Windows.Media;
using GameRes.Utility;
namespace GameRes.Formats.Slg
{
internal class TimMetaData : ImageMetaData
{
public uint Seed;
public int Stride;
}
[Export(typeof(ImageFormat))]
public class TimFormat : ImageFormat
{
public override string Tag { get { return "TIM/SLG"; } }
public override string Description { get { return "SLG system encrypted image"; } }
public override uint Signature { get { return 0; } }
public override ImageMetaData ReadMetaData (IBinaryStream file)
{
if (!file.Name.HasExtension (".tim") || file.Length < 1024)
return null;
var header = file.ReadBytes (1024);
uint seed = (uint)(header[18] | header[42] << 8 | header[98] << 16 | header[118] << 24);
var rnd = new RandomGenerator (seed);
for (int i = 512; i < 1024; ++i)
{
header[i] -= (byte)rnd.Next();
}
if (!Binary.AsciiEqual (header, 0x2DE, "TIM Data Ver 1.00\0"))
return null;
return new TimMetaData {
Width = header.ToUInt32 (0x248),
Height = header.ToUInt32 (0x29C),
Stride = header.ToInt32 (0x2BA),
Seed = rnd.Seed,
BPP = 24,
};
}
public override ImageData Read (IBinaryStream file, ImageMetaData info)
{
var meta = (TimMetaData)info;
file.Position = 1024;
var pixels = file.ReadBytes (meta.Stride * (int)meta.Height);
var key_table = GenerateDecryptTable (meta.Seed);
for (int i = 0; i < pixels.Length; ++i)
{
pixels[i] -= key_table[i & 0xFFF];
}
return ImageData.CreateFlipped (info, PixelFormats.Bgr24, null, pixels, meta.Stride);
}
internal byte[] GenerateDecryptTable (uint seed)
{
var rnd = new RandomGenerator (seed);
var table = new byte[0x1000];
for (int i = 0; i < table.Length; ++i)
table[i] = (byte)rnd.Next();
return table;
}
public override void Write (Stream file, ImageData image)
{
throw new System.NotImplementedException ("TimFormat.Write not implemented");
}
}
}