implemented propeller MPK archives and MGR images.

2026-07-08 01:30:18 +08:00 · 2015-11-21 10:27:36 +04:00
parent aed3a38bf8
commit c461da3cd7
5 changed files with 358 additions and 0 deletions
--- a/ArcFormats/Propeller/ArcMGR.cs
+++ b/ArcFormats/Propeller/ArcMGR.cs
@@ -0,0 +1,136 @@
+//! \file       ArcMGR.cs
+//! \date       Sat Nov 21 02:05:59 2015
+//! \brief      Propeller multi-frame image.
+//
+// Copyright (C) 2015 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;
+using System.Linq;
+using GameRes.Utility;
+
+namespace GameRes.Formats.Propeller
+{
+    [Export(typeof(ArchiveFormat))]
+    public class MgrOpener : ArchiveFormat
+    {
+        public override string         Tag { get { return "MGR"; } }
+        public override string Description { get { return "Propeller multi-frame image"; } }
+        public override uint     Signature { get { return 0; } }
+        public override bool  IsHierarchic { get { return false; } }
+        public override bool     CanCreate { get { return false; } }
+
+        public override ArcFile TryOpen (ArcView file)
+        {
+            if (!file.Name.EndsWith (".mgr", StringComparison.InvariantCultureIgnoreCase))
+                return null;
+            int count = file.View.ReadInt16 (0);
+            if (count <= 0 || count >= 0x100)
+                return null;
+            uint current = 2;
+            uint first_offset = current;
+            if (count > 1)
+            {
+                first_offset = file.View.ReadUInt32 (current);
+                if (first_offset != 2 + count * 4)
+                    return null;
+            }
+            if (!file.View.AsciiEqual (first_offset+9, "BM"))
+                return null;
+            string base_name = Path.GetFileNameWithoutExtension (file.Name);
+            var dir = new List<Entry> (count);
+            if (count > 1)
+            {
+                for (int i = 0; i < count; ++i)
+                {
+                    var entry = new PackedEntry {
+                        Name = string.Format ("{0}#{1:D4}.bmp", base_name, i),
+                        Type = "image",
+                        Offset = file.View.ReadUInt32 (current),
+                    };
+                    if (entry.Offset < first_offset || entry.Offset >= file.MaxOffset)
+                        return null;
+                    dir.Add (entry);
+                    current += 4;
+                }
+            }
+            else
+            {
+                dir.Add (new PackedEntry { Name = base_name+".bmp", Type = "image", Offset = current });
+            }
+            foreach (var entry in dir.Cast<PackedEntry>())
+            {
+                entry.UnpackedSize  = file.View.ReadUInt32 (entry.Offset);
+                entry.Size          = file.View.ReadUInt32 (entry.Offset+4);
+                if (entry.UnpackedSize < 0x36 || entry.Size > file.MaxOffset-entry.Offset)
+                    return null;
+                entry.Offset += 8;
+            }
+            return new ArcFile (file, this, dir);
+        }
+
+        public override Stream OpenEntry (ArcFile arc, Entry entry)
+        {
+            using (var input = arc.File.CreateStream (entry.Offset, entry.Size))
+            {
+                var bmp = new byte[(entry as PackedEntry).UnpackedSize];
+                Decompress (input, bmp);
+                return new MemoryStream (bmp);
+            }
+        }
+
+        static public int Decompress (Stream input, byte[] output)
+        {
+            int dst = 0;
+            while (dst < output.Length)
+            {
+                int count = input.ReadByte();
+                if (-1 == count)
+                    break;
+                if (count < 0x20)
+                {
+                    count = Math.Min (count+1, output.Length-dst);
+                    int read = input.Read (output, dst, count);
+                    dst += read;
+                    if (read < count)
+                        break;
+                }
+                else
+                {
+                    int offset = ((count & 0x1F) << 8) + 1;
+                    count >>= 5;
+                    if (7 == count)
+                        count += input.ReadByte();
+                    offset += input.ReadByte();
+                    if (offset >= dst)
+                        throw new InvalidFormatException();
+                    count = Math.Min (count+2, output.Length-dst);
+                    Binary.CopyOverlapped (output, dst - offset, dst, count);
+                    dst += count;
+                }
+            }
+            return dst;
+        }
+    }
+}