From b09a0bff43ea2925f09fb9cc99ff554853ae8ab9 Mon Sep 17 00:00:00 2001
From: morkt <muvluv.ru@gmail.com>
Date: Fri, 2 Feb 2018 03:33:58 +0400
Subject: [PATCH] (Legacy): implemented LB5 archives.

---
 Legacy/Jupiter/ArcLB5.cs | 111 +++++++++++++++++++++++++++++++++++++++
 1 file changed, 111 insertions(+)
 create mode 100644 Legacy/Jupiter/ArcLB5.cs

diff --git a/Legacy/Jupiter/ArcLB5.cs b/Legacy/Jupiter/ArcLB5.cs
new file mode 100644
index 00000000..bf8cc32e
--- /dev/null
+++ b/Legacy/Jupiter/ArcLB5.cs
@@ -0,0 +1,111 @@
+//! \file       ArcLB5.cs
+//! \date       2018 Jan 25
+//! \brief      Jupiter resource archive.
+//
+// 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;
+using System.Collections.Generic;
+using System.ComponentModel.Composition;
+using System.IO;
+
+namespace GameRes.Formats.Jupiter
+{
+    [Export(typeof(ArchiveFormat))]
+    public class Lb5Opener : ArchiveFormat
+    {
+        public override string         Tag { get { return "LB5"; } }
+        public override string Description { get { return "Jupiter resource archive"; } }
+        public override uint     Signature { get { return 0; } }
+        public override bool  IsHierarchic { get { return false; } }
+        public override bool      CanWrite { get { return false; } }
+
+        public override ArcFile TryOpen (ArcView file)
+        {
+            if (!file.Name.HasExtension (".lb5"))
+                return null;
+            var idx_name = Path.ChangeExtension (file.Name, "idx");
+            if (!VFS.FileExists (idx_name))
+                return null;
+            using (var index = VFS.OpenView (idx_name))
+            {
+                int count = index.View.ReadInt32 (0);
+                if (!IsSaneCount (count))
+                    return null;
+                uint idx_offset = 4;
+                var dir = new List<Entry> (count);
+                for (int i = 0; i < count; ++i)
+                {
+                    uint offset = index.View.ReadUInt32 (idx_offset);
+                    uint size   = index.View.ReadUInt32 (idx_offset + 4);
+                    var name = index.View.ReadString (idx_offset + 9, 0xB);
+                    var entry = FormatCatalog.Instance.Create<Entry> (name);
+                    entry.Offset = offset;
+                    entry.Size   = size;
+                    if (!entry.CheckPlacement (file.MaxOffset))
+                        return null;
+                    dir.Add (entry);
+                    idx_offset += 0x18;
+                }
+                return new ArcFile (file, this, dir);
+            }
+        }
+
+        public override IImageDecoder OpenImage (ArcFile arc, Entry entry)
+        {
+            if (arc.File.View.ReadUInt32 (entry.Offset) != 0x88888888 ||
+                arc.File.View.ReadUInt16 (entry.Offset+0x10) != 0x4D42) // 'BM'
+                return base.OpenImage (arc, entry);
+            var info = new Lb5MetaData {
+                Width  = arc.File.View.ReadUInt32 (entry.Offset+4),
+                Height = arc.File.View.ReadUInt32 (entry.Offset+8),
+                UnpackedSize = arc.File.View.ReadUInt32 (entry.Offset+0xC),
+                BPP = arc.File.View.ReadUInt16 (entry.Offset+0x1C),
+            };
+            var input = arc.File.CreateStream (entry.Offset+0x10, entry.Size-0x10);
+            return new Lb5ImageDecoder (input, info);
+        }
+    }
+
+    internal class Lb5MetaData : ImageMetaData
+    {
+        public uint UnpackedSize;
+    }
+
+    internal class Lb5ImageDecoder : BinaryImageDecoder
+    {
+        byte[]  m_output;
+
+        public Lb5ImageDecoder (IBinaryStream input, Lb5MetaData info) : base (input, info)
+        {
+            m_output = new byte[info.UnpackedSize];
+        }
+
+        protected override ImageData GetImageData ()
+        {
+            m_input.Position = 0x36;
+            int block_count = ((int)Info.Width + 7) / 8 * ((int)Info.Height + 7) / 8;
+            var block_info = m_input.ReadBytes (block_count);
+            throw new NotImplementedException();
+        }
+    }
+}