implemented DNS archives and 'YP' images.

2026-07-08 01:30:18 +08:00 · 2017-12-10 14:14:58 +04:00
parent bde8615513
commit 982d6fb2b1
4 changed files with 222 additions and 2 deletions
--- a/ArcFormats/Marble/ImageYP.cs
+++ b/ArcFormats/Marble/ImageYP.cs
@@ -0,0 +1,128 @@
+//! \file       ImageYP.cs
+//! \date       2017 Dec 10
+//! \brief      DarkNiteSystem image format.
+//
+// Copyright (C) 2017 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.ComponentModel.Composition;
+using System.IO;
+using GameRes.Utility;
+
+namespace GameRes.Formats.DarkNiteSystem
+{
+    internal class YpMetaData : ImageMetaData
+    {
+        public int  UnpackedSize;
+    }
+
+    /// <summary>
+    /// Marble YB image format predecessor.
+    /// </summary>
+    [Export(typeof(ImageFormat))]
+    public class YpFormat : ImageFormat
+    {
+        public override string         Tag { get { return "PRS/YP"; } }
+        public override string Description { get { return "DarkNiteSystem image format"; } }
+        public override uint     Signature { get { return 0; } }
+
+        public override ImageMetaData ReadMetaData (IBinaryStream file)
+        {
+            var header = file.ReadHeader (8);
+            if (!header.AsciiEqual ("YP"))
+                return null;
+            int unpacked_size = header.ToInt24 (2);
+            int packed_size = header.ToInt24 (5);
+            var data = LzUnpack (file, 0x36);
+            using (var bmp = new BinMemoryStream (data, file.Name))
+            {
+                var info = Bmp.ReadMetaData (bmp);
+                if (null == info)
+                    return info;
+                return new YpMetaData {
+                    Width = info.Width,
+                    Height = info.Height,
+                    BPP = info.BPP,
+                    UnpackedSize = unpacked_size,
+                };
+            }
+        }
+
+        public override ImageData Read (IBinaryStream file, ImageMetaData info)
+        {
+            var meta = (YpMetaData)info;
+            file.Position = 8;
+            var data = LzUnpack (file, meta.UnpackedSize);
+            using (var bmp = new BinMemoryStream (data, file.Name))
+                return Bmp.Read (bmp, info);
+        }
+
+        public override void Write (Stream file, ImageData image)
+        {
+            throw new System.NotImplementedException ("YpFormat.Write not implemented");
+        }
+
+        byte[] LzUnpack (IBinaryStream input, int unpacked_size)
+        {
+            var output = new byte[unpacked_size];
+            var frame = new byte[0x4000];
+            int dst = 0;
+            int ctl_bits = 0;
+            byte ctl_mask = 0;
+            int frame_pos = 0;
+            while (dst < unpacked_size)
+            {
+                if (0 == ctl_mask)
+                {
+                    ctl_bits = input.ReadByte();
+                    if (-1 == ctl_bits)
+                        break;
+                    ctl_mask = 0x80;
+                }
+                if (0 != (ctl_bits & ctl_mask))
+                {
+                    byte lo = input.ReadUInt8();
+                    byte hi = input.ReadUInt8();
+                    int count = Math.Min (CountTable[lo & 0xF], unpacked_size - dst);
+                    int offset = hi << 4 | lo >> 4;
+                    int src = frame_pos - offset;
+                    for (int i = 0; i < count; ++i)
+                    {
+                        byte v = frame[src++ & 0x3FFF];
+                        output[dst++] = v;
+                        frame[frame_pos++ & 0x3FFF] = v;
+                    }
+                }
+                else
+                {
+                    byte v = input.ReadUInt8();
+                    output[dst++] = v;
+                    frame[frame_pos++ & 0x3FFF] = v;
+                }
+                ctl_mask >>= 1;
+            }
+            return output;
+        }
+
+        static readonly byte[] CountTable = { 3, 4, 5, 6, 7, 8, 9, 0xA, 0xB, 0xC, 0xE, 0x10, 0x18, 0x20, 0x40, 0x80 };
+    }
+}