From f74b6343a990b474cdf5dfeec934186810833411 Mon Sep 17 00:00:00 2001
From: morkt <morkt@users.noreply.github.com>
Date: Mon, 9 Apr 2018 13:18:31 +0400
Subject: [PATCH] (G00): implemented encrypted JPEG images.

---
 ArcFormats/ArcFormats.csproj        |  1 +
 ArcFormats/RealLive/ImageG00Jpeg.cs | 89 +++++++++++++++++++++++++++++
 2 files changed, 90 insertions(+)
 create mode 100644 ArcFormats/RealLive/ImageG00Jpeg.cs

diff --git a/ArcFormats/ArcFormats.csproj b/ArcFormats/ArcFormats.csproj
index f39cfe37..f0d56322 100644
--- a/ArcFormats/ArcFormats.csproj
+++ b/ArcFormats/ArcFormats.csproj
@@ -213,6 +213,7 @@
     <Compile Include="Qlie\Encryption.cs" />
     <Compile Include="RealLive\ArcKOE.cs" />
     <Compile Include="RealLive\ArcSEEN.cs" />
+    <Compile Include="RealLive\ImageG00Jpeg.cs" />
     <Compile Include="ResourceSettings.cs" />
     <Compile Include="RPGMaker\ArcRGSS.cs" />
     <Compile Include="RPM\ArcZENOS.cs" />
diff --git a/ArcFormats/RealLive/ImageG00Jpeg.cs b/ArcFormats/RealLive/ImageG00Jpeg.cs
new file mode 100644
index 00000000..da6adfe5
--- /dev/null
+++ b/ArcFormats/RealLive/ImageG00Jpeg.cs
@@ -0,0 +1,89 @@
+//! \file       ImageG00Jpeg.cs
+//! \date       2018 Apr 09
+//! \brief      Siglus engine encrypted JPEG 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;
+
+namespace GameRes.Formats.RealLive
+{
+    [Export(typeof(ImageFormat))]
+    public class G00JpegFormat : ImageFormat
+    {
+        public override string         Tag { get { return "G00/JPEG"; } }
+        public override string Description { get { return "Siglus engine encrypted JPEG image"; } }
+        public override uint     Signature { get { return 0; } }
+
+        public override ImageMetaData ReadMetaData (IBinaryStream file)
+        {
+            int type = file.ReadByte();
+            if (type != 3)
+                return null;
+            uint width  = file.ReadUInt16();
+            uint height = file.ReadUInt16();
+            if (0 == width || width > 0x8000 || 0 == height || height > 0x8000)
+                return null;
+            using (var jpeg = OpenJpegStream (file))
+                return Jpeg.ReadMetaData (jpeg);
+        }
+
+        public override ImageData Read (IBinaryStream file, ImageMetaData info)
+        {
+            using (var jpeg = OpenJpegStream (file))
+                return Jpeg.Read (jpeg, info);
+        }
+
+        IBinaryStream OpenJpegStream (IBinaryStream file)
+        {
+            Stream input = new StreamRegion (file.AsStream, 5, true);
+            input = new ByteStringEncryptedStream (input, DefaultKey);
+            return new BinaryStream (input, file.Name);
+        }
+
+        public override void Write (Stream file, ImageData image)
+        {
+            throw new System.NotImplementedException ("G00JpegFormat.Write not implemented");
+        }
+
+        static readonly byte[] DefaultKey = {
+            0x45, 0x0C, 0x85, 0xC0, 0x75, 0x14, 0xE5, 0x5D, 0x8B, 0x55, 0xEC, 0xC0, 0x5B, 0x8B, 0xC3, 0x8B,
+            0x81, 0xFF, 0x00, 0x00, 0x04, 0x00, 0x85, 0xFF, 0x6A, 0x00, 0x76, 0xB0, 0x43, 0x00, 0x76, 0x49,
+            0x00, 0x8B, 0x7D, 0xE8, 0x8B, 0x75, 0xA1, 0xE0, 0x0C, 0x85, 0xC0, 0xC0, 0x75, 0x78, 0x30, 0x44,
+            0x00, 0x85, 0xFF, 0x76, 0x37, 0x81, 0x1D, 0xD0, 0xFF, 0x00, 0x00, 0x75, 0x44, 0x8B, 0xB0, 0x43,
+            0x45, 0xF8, 0x8D, 0x55, 0xFC, 0x52, 0x00, 0x76, 0x68, 0x00, 0x00, 0x04, 0x00, 0x6A, 0x43, 0x8B,
+            0xB1, 0x43, 0x00, 0x6A, 0x05, 0xFF, 0x50, 0xFF, 0xD3, 0xA1, 0xE0, 0x04, 0x00, 0x56, 0x15, 0x2C,
+            0x44, 0x00, 0x85, 0xC0, 0x74, 0x09, 0xC3, 0xA1, 0x5F, 0x5E, 0x33, 0x8B, 0xE5, 0x5D, 0xE0, 0x30,
+            0x04, 0x00, 0x81, 0xC6, 0x00, 0x00, 0x81, 0xEF, 0x04, 0x00, 0x85, 0x30, 0x44, 0x00, 0x00, 0x00,
+            0x5D, 0xC3, 0x8B, 0x55, 0xF8, 0x8D, 0x5E, 0x5B, 0x4D, 0xFC, 0x51, 0xC4, 0x04, 0x5F, 0x8B, 0xE5,
+            0x43, 0x00, 0xEB, 0xD8, 0x8B, 0x45, 0xFF, 0x15, 0xE8, 0x83, 0xC0, 0x57, 0x56, 0x52, 0x2C, 0xB1,
+            0x01, 0x00, 0x8B, 0x7D, 0xE8, 0x89, 0x00, 0xE8, 0x45, 0xF4, 0x8B, 0x20, 0x50, 0x6A, 0x47, 0x28,
+            0x00, 0x50, 0x53, 0xFF, 0x15, 0x34, 0xE4, 0x6A, 0xB1, 0x43, 0x00, 0x0C, 0x8B, 0x45, 0x00, 0x6A,
+            0x8B, 0x4D, 0xEC, 0x89, 0x08, 0x8A, 0x85, 0xC0, 0x45, 0xF0, 0x84, 0x8B, 0x45, 0x10, 0x74, 0x05,
+            0xF5, 0x28, 0x01, 0x00, 0x83, 0xC4, 0x52, 0x6A, 0x08, 0x89, 0x45, 0x83, 0xC2, 0x20, 0x00, 0xE8,
+            0xE8, 0xF4, 0xFB, 0xFF, 0xFF, 0x8B, 0x8B, 0x5D, 0x45, 0x0C, 0x83, 0xC0, 0x74, 0xC5, 0xF8, 0x53,
+            0xC4, 0x08, 0x85, 0xC0, 0x75, 0x56, 0x30, 0x44, 0x8B, 0x1D, 0xD0, 0xF0, 0xA1, 0xE0, 0x00, 0x83,
+        };
+    }
+}