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https://github.com/crskycode/GARbro.git
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(Legacy): implemented encrypted GRD images.
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morkt
parent
c4cb8e2489
commit
030a65ac35
@ -125,7 +125,8 @@
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<Compile Include="Rune\ArcYK.cs" />
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<Compile Include="Sarang\ImageABC.cs" />
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<Compile Include="Sogna\ArcSGS.cs" />
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<None Include="Speed\ImageDAT.cs" />
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<Compile Include="StudioJikkenshitsu\ImageDAT.cs" />
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<Compile Include="StudioJikkenshitsu\ImageGRD.cs" />
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<Compile Include="Tako\ArcMPK.cs" />
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<Compile Include="Tetratech\ArcBND.cs" />
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<Compile Include="Tigerman\ArcCHR.cs" />
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@ -216,7 +217,6 @@
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</ItemGroup>
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<ItemGroup>
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<Folder Include="Bom\" />
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<Folder Include="StudioJikkenshitsu\" />
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</ItemGroup>
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<Import Project="$(MSBuildToolsPath)\Microsoft.CSharp.targets" />
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<PropertyGroup>
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@ -23,9 +23,13 @@
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// IN THE SOFTWARE.
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//
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using System;
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using System.ComponentModel.Composition;
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using System.IO;
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using System.Windows.Media;
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using System.Windows.Media.Imaging;
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using GameRes.Compression;
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using GameRes.Utility;
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// [030411][Studio Jikkenshitsu] Giin Oyako
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@ -33,9 +37,10 @@ namespace GameRes.Formats.Jikkenshitsu
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{
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internal class GrdMetaData : ImageMetaData
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{
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public int PackedLength;
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public int AlphaLength;
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public bool IsEncrypted;
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public int PackedLength;
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public int AlphaLength;
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public bool IsEncrypted;
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public byte[] Key;
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}
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[Export(typeof(ImageFormat))]
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@ -45,6 +50,9 @@ namespace GameRes.Formats.Jikkenshitsu
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public override string Description { get { return "Studio Jikkenshitsu image format"; } }
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public override uint Signature { get { return 0x20445247; } } // 'GRD '
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// Giin Oyako
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static readonly byte[] DefaultKey = { 0xF, 0, 1, 2, 8, 5, 0xA, 0xB, 5, 9, 0xE, 0xD, 1, 8, 0, 6 };
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public override ImageMetaData ReadMetaData (IBinaryStream file)
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{
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var header = file.ReadHeader (0x18);
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@ -53,16 +61,16 @@ namespace GameRes.Formats.Jikkenshitsu
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Height = header.ToUInt16 (8),
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BPP = header[4],
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PackedLength = header.ToInt32 (0xC),
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AlphaLength = header.ToInt32 (0x10),
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AlphaLength = header.ToInt32 (0x14),
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IsEncrypted = (header[5] & 0x80) != 0,
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Key = DefaultKey,
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};
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}
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public override ImageData Read (IBinaryStream file, ImageMetaData info)
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{
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var reader = new GrdReader (file, (GrdMetaData)info);
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var pixels = reader.Unpack();
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return ImageData.Create (info, reader.Format, null, pixels);
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return reader.Unpack();
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}
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public override void Write (Stream file, ImageData image)
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@ -77,54 +85,102 @@ namespace GameRes.Formats.Jikkenshitsu
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GrdMetaData m_info;
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byte[] m_output;
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public PixelFormat Format { get; private set; }
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public BitmapPalette Palette { get; private set; }
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public PixelFormat Format { get; private set; }
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public int Stride { get; private set; }
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public GrdReader (IBinaryStream input, GrdMetaData info)
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{
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m_input = input;
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m_info = info;
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if (8 == m_info.BPP)
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Format = PixelFormats.Gray8;
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Format = PixelFormats.Indexed8;
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else if (24 == m_info.BPP)
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Format = PixelFormats.Bgr24;
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else
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throw new InvalidFormatException();
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int image_size = (int)m_info.Width * (int)m_info.Height;
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if (m_info.BPP >= 8)
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image_size *= (m_info.BPP + 1) / 8;
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else
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image_size = image_size * m_info.BPP / 8;
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m_output = new byte[image_size];
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int width = (int)m_info.Width;
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if (m_info.BPP <= 8)
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width = (width + 3) & ~3;
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Stride = width * m_info.BPP / 8;
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m_output = new byte[Stride * (int)m_info.Height];
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}
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public byte[] Unpack ()
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public ImageData Unpack ()
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{
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m_input.Position = 0x18;
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var input = m_input.ReadBytes (m_info.PackedLength);
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Stream input = new StreamRegion (m_input.AsStream, 0x18, m_info.PackedLength, true);
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if (m_info.IsEncrypted)
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DecryptData (input, 0, input.Length & -8);
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using (var mem = new MemoryStream (input))
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using (var lzss = new LzssStream (mem))
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lzss.Read (m_output, 0, m_output.Length);
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if (m_info.AlphaLength > 0)
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input = new InputCryptoStream (input, new SjTransform (m_info.Key));
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using (input = new LzssStream (input))
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{
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var header = new byte[0x28];
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input.Read (header, 0, header.Length);
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if (8 == m_info.BPP)
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Palette = ImageFormat.ReadPalette (input);
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input.Read (m_output, 0, m_output.Length);
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}
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if (m_info.AlphaLength > 0 && m_info.BPP == 8)
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{
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m_input.Position = 0x18 + m_info.PackedLength;
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var alpha = new byte[m_info.AlphaLength];
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using (var lzss = new LzssStream (m_input.AsStream, LzssMode.Decompress, true))
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lzss.Read (alpha, 0, alpha.Length);
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return ApplyAlpha (alpha);
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}
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return m_output;
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return ImageData.CreateFlipped (m_info, Format, Palette, m_output, Stride);
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}
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void DecryptData (byte[] data, int pos, int length)
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ImageData ApplyAlpha (byte[] alpha)
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{
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for (int i = 0; i < length; i += 8)
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int width = (int)m_info.Width;
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int height = (int)m_info.Height;
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int dst_stride = width * 4;
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var pixels = new byte[dst_stride * height];
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var colors = Palette.Colors;
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var row_table = new ushort[height];
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int row_table_size = row_table.Length * sizeof(ushort);
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Buffer.BlockCopy (alpha, 0, row_table, 0, row_table_size);
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var lines = new int[height];
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int lines_size = lines.Length * sizeof(int);
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Buffer.BlockCopy (alpha, row_table_size, lines, 0, lines_size);
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int alpha_pos = row_table_size + lines_size;
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int src = m_output.Length - Stride;
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int dst_row = 0;
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for (int y = 0; y < height; ++y)
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{
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DecryptBlock (data, pos + i);
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int dst = dst_row;
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for (int x = 0; x < width; ++x)
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{
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byte code = m_output[src+x];
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var color = colors[code];
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pixels[dst++] = color.B;
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pixels[dst++] = color.G;
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pixels[dst++] = color.R;
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pixels[dst++] = (byte)(code != 0 ? 0xFF : 0);
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}
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int asrc = alpha_pos + 4 * lines[y];
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for (int i = 0; i < row_table[y]; ++i)
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{
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byte a = Math.Min (alpha[asrc+3], (byte)0xF);
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dst = dst_row + LittleEndian.ToUInt16 (alpha, asrc) * 4;
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if (a > 0)
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{
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var color = colors[alpha[asrc+2]];
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pixels[dst ] = color.B;
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pixels[dst+1] = color.G;
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pixels[dst+2] = color.R;
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pixels[dst+3] = (byte)(a * 0x11);
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}
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else
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pixels[dst+3] = 0;
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asrc += 4;
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}
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dst_row += dst_stride;
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src -= Stride;
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}
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}
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void DecryptBlock (byte[] data, int pos)
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{
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return ImageData.Create (m_info, PixelFormats.Bgra32, null, pixels, dst_stride);
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}
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}
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}
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