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/ImageMGR.cs
+++ b/ArcFormats/Propeller/ImageMGR.cs
@@ -0,0 +1,121 @@
+//! \file       ImageMGR.cs
+//! \date       Sat Nov 21 01:58:44 2015
+//! \brief      Propeller compressed bitmap.
+//
+// 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 GameRes.Utility;
+using System;
+using System.ComponentModel.Composition;
+using System.IO;
+using System.Windows.Media;
+
+namespace GameRes.Formats.Propeller
+{
+    internal class MgrMetaData : ImageMetaData
+    {
+        public int  Offset;
+        public int  PackedSize;
+        public int  UnpackedSize;
+    }
+
+    [Export(typeof(ImageFormat))]
+    public class MgrFormat : ImageFormat
+    {
+        public override string         Tag { get { return "MGR"; } }
+        public override string Description { get { return "Propeller image format"; } }
+        public override uint     Signature { get { return 0; } }
+
+        public override ImageMetaData ReadMetaData (Stream stream)
+        {
+            using (var reader = new ArcView.Reader (stream))
+            {
+                int count = reader.ReadInt16();
+                if (count <= 0 || count >= 0x100)
+                    return null;
+                int offset;
+                if (count > 1)
+                {
+                    offset = reader.ReadInt32();
+                    if (offset != 2 + count * 4)
+                        return null;
+                }
+                else
+                    offset = 2;
+                stream.Position = offset;
+                int unpacked_size = reader.ReadInt32();
+                int packed_size = reader.ReadInt32();
+                offset += 8;
+                if (offset + packed_size > stream.Length)
+                    return null;
+                byte[] header = new byte[0x36];
+                if (0x36 != MgrOpener.Decompress (stream, header)
+                    || header[0] != 'B' || header[1] != 'M')
+                    return null;
+                using (var bmp = new MemoryStream (header))
+                {
+                    var info = Bmp.ReadMetaData (bmp);
+                    if (null == info)
+                        return null;
+                    return new MgrMetaData
+                    {
+                        Width = info.Width,
+                        Height = info.Height,
+                        BPP = info.BPP,
+                        Offset = offset,
+                        PackedSize = packed_size,
+                        UnpackedSize = unpacked_size,
+                    };
+                }
+            }
+        }
+
+        public override ImageData Read (Stream stream, ImageMetaData info)
+        {
+            var meta = (MgrMetaData)info;
+            stream.Position = meta.Offset;
+            var data = new byte[meta.UnpackedSize];
+            if (data.Length != MgrOpener.Decompress (stream, data))
+                throw new InvalidFormatException();
+            if (meta.BPP != 32)
+            {
+                using (var bmp = new MemoryStream (data))
+                    return Bmp.Read (bmp, info);
+            }
+            // special case for 32bpp bitmaps with alpha-channel
+            int stride = (int)meta.Width * 4;
+            var pixels = new byte[stride * (int)meta.Height];
+            int src = LittleEndian.ToInt32 (data, 0xA);
+            for (int dst = stride*((int)meta.Height-1); dst >= 0; dst -= stride)
+            {
+                Buffer.BlockCopy (data, src, pixels, dst, stride);
+                src += stride;
+            }
+            return ImageData.Create (info, PixelFormats.Bgra32, null, pixels);
+        }
+
+        public override void Write (Stream file, ImageData image)
+        {
+            throw new System.NotImplementedException ("MgrFormat.Write not implemented");
+        }
+    }
+}