Public-Mirror/GARbro-mirror
1
0
Fork 0
mirror of https://github.com/crskycode/GARbro.git synced 2024-11-26 23:24:00 +08:00
Code Issues Projects Releases Wiki Activity

(GRP): support encrypted images.

Browse Source
This commit is contained in:
morkt 2019-04-21 00:20:16 +04:00
parent 8315575c75
commit 07b2e1488e
1 changed files with 73 additions and 83 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

156
ArcFormats/Cherry/ImageGRP.cs
View File

@ -2,7 +2,7 @@
//! \date Wed Jun 24 22:14:41 2015 //! \date Wed Jun 24 22:14:41 2015
//! \brief Cherry Soft compressed image format. //! \brief Cherry Soft compressed image format.
// //
// Copyright (C) 2015 by morkt // Copyright (C) 2015-2019 by morkt
// //
// Permission is hereby granted, free of charge, to any person obtaining a copy // Permission is hereby granted, free of charge, to any person obtaining a copy
// of this software and associated documentation files (the "Software"), to // of this software and associated documentation files (the "Software"), to
@ -29,7 +29,6 @@ using System.IO;
using System.Windows.Media; using System.Windows.Media;
using System.Windows.Media.Imaging; using System.Windows.Media.Imaging;
using GameRes.Compression; using GameRes.Compression;
using GameRes.Utility;
namespace GameRes.Formats.Cherry namespace GameRes.Formats.Cherry
{ {
@ -40,6 +39,7 @@ namespace GameRes.Formats.Cherry
public int Offset; public int Offset;
public int HeaderSize; public int HeaderSize;
public bool AlphaChannel; public bool AlphaChannel;
public bool IsEncrypted;
} }
[Export(typeof(ImageFormat))] [Export(typeof(ImageFormat))]
@ -57,6 +57,11 @@ namespace GameRes.Formats.Cherry
public override ImageMetaData ReadMetaData (IBinaryStream stream) public override ImageMetaData ReadMetaData (IBinaryStream stream)
{ {
var header = stream.ReadHeader (0x18); var header = stream.ReadHeader (0x18);
return UnpackHeader (header);
}
internal GrpMetaData UnpackHeader (CowArray<byte> header)
{
uint width = header.ToUInt32 (0); uint width = header.ToUInt32 (0);
uint height = header.ToUInt32 (4); uint height = header.ToUInt32 (4);
int bpp = header.ToInt32 (8); int bpp = header.ToInt32 (8);
@ -81,8 +86,7 @@ namespace GameRes.Formats.Cherry
public override ImageData Read (IBinaryStream file, ImageMetaData info) public override ImageData Read (IBinaryStream file, ImageMetaData info)
{ {
var meta = (GrpMetaData)info; var reader = new GrpReader (file.AsStream, (GrpMetaData)info);
var reader = new GrpReader (file.AsStream, meta);
return reader.CreateImage(); return reader.CreateImage();
} }
@ -127,6 +131,37 @@ namespace GameRes.Formats.Cherry
} }
} }
[Export(typeof(ImageFormat))]
public class GrpEncFormat : GrpFormat
{
public override string Tag { get { return "GRP/ENC"; } }
public override string Description { get { return "Cherry Soft encrypted image format"; } }
public override uint Signature { get { return 0; } }
public override ImageMetaData ReadMetaData (IBinaryStream file)
{
var header = file.ReadHeader (0x18);
if (header[3] != 0xA5 || header[7] != 0x35)
return null;
header[0] ^= 0x5A; // 0xA53CC35A
header[1] ^= 0xC3;
header[2] ^= 0x3C;
header[3] ^= 0xA5;
header[4] ^= 0x05; // 0x35421005
header[5] ^= 0x10;
header[6] ^= 0x42;
header[7] ^= 0x35;
header[0x10] ^= 0x5D; // 0xCF42355D
header[0x11] ^= 0x35;
header[0x12] ^= 0x42;
header[0x13] ^= 0xCF;
var info = UnpackHeader (header);
if (info != null)
info.IsEncrypted = true;
return info;
}
}
internal class GrpReader internal class GrpReader
{ {
GrpMetaData m_info; GrpMetaData m_info;
@ -150,7 +185,7 @@ namespace GameRes.Formats.Cherry
Format = m_info.AlphaChannel ? PixelFormats.Bgra32 : PixelFormats.Bgr32; Format = m_info.AlphaChannel ? PixelFormats.Bgra32 : PixelFormats.Bgr32;
else else
throw new NotSupportedException ("Not supported GRP image depth"); throw new NotSupportedException ("Not supported GRP image depth");
m_stride = (int)m_info.Width*((Format.BitsPerPixel+7)/8); m_stride = m_info.iWidth * ((Format.BitsPerPixel + 7) / 8);
} }
public ImageData CreateImage () public ImageData CreateImage ()
@ -165,8 +200,10 @@ namespace GameRes.Formats.Cherry
else if (8 == m_info.BPP && 0x418 == m_info.Offset || else if (8 == m_info.BPP && 0x418 == m_info.Offset ||
24 == m_info.BPP && 0x018 == m_info.Offset) 24 == m_info.BPP && 0x018 == m_info.Offset)
return ReadV1(); return ReadV1();
else if (m_info.IsEncrypted)
return ReadEncrypted();
else if (true) // FIXME else if (true) // FIXME
return ReadV3 (0xFFFF != m_info.Offset); return ReadV3 (m_input, 0xFFFF != m_info.Offset);
else else
throw new InvalidFormatException(); throw new InvalidFormatException();
} }
@ -174,12 +211,8 @@ namespace GameRes.Formats.Cherry
private ImageData ReadV1 () private ImageData ReadV1 ()
{ {
if (8 == m_info.BPP) if (8 == m_info.BPP)
{ Palette = ImageFormat.ReadPalette (m_input);
var palette_data = new byte[0x400];
if (palette_data.Length != m_input.Read (palette_data, 0, palette_data.Length))
throw new InvalidFormatException ("Unexpected end of file");
SetPalette (palette_data);
}
var packed = new byte[m_info.PackedSize]; var packed = new byte[m_info.PackedSize];
if (packed.Length != m_input.Read (packed, 0, packed.Length)) if (packed.Length != m_input.Read (packed, 0, packed.Length))
throw new InvalidFormatException ("Unexpected end of file"); throw new InvalidFormatException ("Unexpected end of file");
@ -187,99 +220,56 @@ namespace GameRes.Formats.Cherry
packed[i] ^= (byte)i; packed[i] ^= (byte)i;
using (var input = new MemoryStream (packed)) using (var input = new MemoryStream (packed))
using (var reader = new LzssReader (input, packed.Length, m_info.UnpackedSize)) using (var lzs = new LzssStream (input))
{ {
reader.Unpack();
m_image_data = new byte[m_info.UnpackedSize]; m_image_data = new byte[m_info.UnpackedSize];
// flip pixels vertically // flip pixels vertically
int dst = 0; for (int dst = m_stride * (m_info.iHeight-1); dst >= 0; dst -= m_stride)
for (int src = m_stride * ((int)m_info.Height-1); src >= 0; src -= m_stride)
{ {
Buffer.BlockCopy (reader.Data, src, m_image_data, dst, m_stride); lzs.Read (m_image_data, dst, m_stride);
dst += m_stride;
} }
} }
return ImageData.Create (m_info, Format, Palette, m_image_data); return ImageData.Create (m_info, Format, Palette, m_image_data, m_stride);
} }
// DOUBLE // DOUBLE
private ImageData ReadV2 () private ImageData ReadV2 ()
{ {
if (0 != m_info.PackedSize) if (0 != m_info.PackedSize)
{ return ReadV3 (m_input, true);
using (var reader = new LzssReader (m_input, m_info.PackedSize, m_info.UnpackedSize)) return ImageFromStream (m_input, true);
{
reader.Unpack();
m_image_data = reader.Data;
}
}
else
{
m_image_data = new byte[m_info.UnpackedSize];
if (m_image_data.Length != m_input.Read (m_image_data, 0, m_image_data.Length))
throw new InvalidFormatException ("Unexpected end of file");
}
int pixels_offset = 0;
if (8 == m_info.BPP)
{
SetPalette (m_image_data);
pixels_offset += 0x400;
}
if (0 == pixels_offset)
return ImageData.Create (m_info, Format, Palette, m_image_data);
if (pixels_offset + m_stride*(int)m_info.Height > m_image_data.Length)
throw new InvalidFormatException();
unsafe
{
fixed (byte* pixels = &m_image_data[pixels_offset])
{
var bitmap = BitmapSource.Create ((int)m_info.Width, (int)m_info.Height,
ImageData.DefaultDpiX, ImageData.DefaultDpiY, Format, Palette,
(IntPtr)pixels, m_image_data.Length-pixels_offset, m_stride);
bitmap.Freeze();
return new ImageData (bitmap, m_info);
}
}
} }
// Exile ~Blood Royal 2~ : flipped == true // Exile ~Blood Royal 2~ : flipped == true
// Gakuen ~Nerawareta Chitai~ : flipped == false // Gakuen ~Nerawareta Chitai~ : flipped == false
private ImageData ReadV3 (bool flipped) private ImageData ReadV3 (Stream input, bool flipped)
{ {
using (var lzs = new LzssStream (m_input, LzssMode.Decompress, true)) using (var lzs = new LzssStream (input, LzssMode.Decompress, true))
{ return ImageFromStream (lzs, flipped);
if (8 == m_info.BPP)
{
var palette_data = new byte[0x400];
if (palette_data.Length != lzs.Read (palette_data, 0, palette_data.Length))
throw new InvalidFormatException ("Unexpected end of file");
SetPalette (palette_data);
}
m_image_data = new byte[m_stride * (int)m_info.Height];
if (m_image_data.Length != lzs.Read (m_image_data, 0, m_image_data.Length))
throw new InvalidFormatException();
if (flipped)
return ImageData.CreateFlipped (m_info, Format, Palette, m_image_data, m_stride);
else
return ImageData.Create (m_info, Format, Palette, m_image_data, m_stride);
}
} }
private void SetPalette (byte[] palette_data) private ImageData ImageFromStream (Stream input, bool flipped)
{ {
if (palette_data.Length < 0x400) if (8 == m_info.BPP)
Palette = ImageFormat.ReadPalette (input);
m_image_data = new byte[m_stride * m_info.iHeight];
if (m_image_data.Length != input.Read (m_image_data, 0, m_image_data.Length))
throw new InvalidFormatException(); throw new InvalidFormatException();
var palette = new Color[0x100]; if (flipped)
for (int i = 0; i < palette.Length; ++i) return ImageData.CreateFlipped (m_info, Format, Palette, m_image_data, m_stride);
{ else
int c = i * 4; return ImageData.Create (m_info, Format, Palette, m_image_data, m_stride);
palette[i] = Color.FromRgb (palette_data[c+2], palette_data[c+1], palette_data[c]); }
}
Palette = new BitmapPalette (palette); private ImageData ReadEncrypted ()
{
var data = new byte[m_input.Length - m_info.HeaderSize];
m_input.Read (data, 0, data.Length);
Pak2Opener.Decrypt (data, 0, data.Length);
using (var input = new MemoryStream (data))
return ReadV3 (input, true);
} }
} }
} }