reorganized project directory structure.

ArcFormats/Yuka/ImageYKG.cs

@@ -0,0 +1,135 @@
+//! \file       ImageYKG.cs
+//! \date       Thu Aug 13 22:16:30 2015
+//! \brief      Yuka engine images implementation.
+//
+// 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.ComponentModel.Composition;
+using System.IO;
+using System.Linq;
+using GameRes.Utility;
+
+namespace GameRes.Formats.Yuka
+{
+    internal class YkgMetaData : ImageMetaData
+    {
+        public uint     DataOffset;
+        public uint     DataSize;
+        public YkgImage Format;
+    }
+
+    internal enum YkgImage
+    {
+        Bmp, Png, Gnp,
+    }
+
+    [Export(typeof(ImageFormat))]
+    public class YkgFormat : ImageFormat
+    {
+        public override string         Tag { get { return "YKG"; } }
+        public override string Description { get { return "Yuka engine image format"; } }
+        public override uint     Signature { get { return 0x30474B59; } } // 'YKG0'
+
+        static readonly byte[] PngPrefix = new byte[4] { 0x89, 'P'^0, 'N'^0, 'G'^0 };
+
+        public override ImageMetaData ReadMetaData (Stream stream)
+        {
+            var header = new byte[0x40];
+            if (header.Length != stream.Read (header, 0, header.Length))
+                return null;
+            if (!Binary.AsciiEqual (header, 4, "00\0\0"))
+                return null;
+            var ykg = new YkgMetaData {
+                DataOffset = LittleEndian.ToUInt32 (header, 0x28),
+                DataSize   = LittleEndian.ToUInt32 (header, 0x2C)
+            };
+            if (ykg.DataOffset < 0x30)
+                return null;
+            ImageMetaData info = null;
+            using (var img = new StreamRegion (stream, ykg.DataOffset, ykg.DataSize, true))
+            {
+                if (4 != img.Read (header, 0, 4))
+                    return null;
+                if (Binary.AsciiEqual (header, "BM"))
+                {
+                    img.Position = 0;
+                    info = ImageFormat.Bmp.ReadMetaData (img);
+                    ykg.Format = YkgImage.Bmp;
+                }
+                else if (Binary.AsciiEqual (header, "\x89PNG"))
+                {
+                    img.Position = 0;
+                    info = Png.ReadMetaData (img);
+                    ykg.Format = YkgImage.Png;
+                }
+                else if (Binary.AsciiEqual (header, "\x89GNP"))
+                {
+                    using (var body = new StreamRegion (stream, ykg.DataOffset+4, ykg.DataSize-4, true))
+                    using (var png = new PrefixStream (PngPrefix, body))
+                        info = Png.ReadMetaData (png);
+                    ykg.Format = YkgImage.Gnp;
+                }
+                else
+                {
+                    return null;
+                }
+            }
+            if (null == info)
+                return null;
+            ykg.Width = info.Width;
+            ykg.Height = info.Height;
+            ykg.BPP = info.BPP;
+            ykg.OffsetX = info.OffsetX;
+            ykg.OffsetY = info.OffsetY;
+            return ykg;
+        }
+
+        public override ImageData Read (Stream stream, ImageMetaData info)
+        {
+            var meta = info as YkgMetaData;
+            if (null == meta)
+                throw new ArgumentException ("YkgFormat.Read should be supplied with YkgMetaData", "info");
+
+            switch (meta.Format)
+            {
+            case YkgImage.Bmp:
+                using (var bmp = new StreamRegion (stream, meta.DataOffset, meta.DataSize, true))
+                    return Bmp.Read (bmp, info);
+            case YkgImage.Png:
+                using (var png = new StreamRegion (stream, meta.DataOffset, meta.DataSize, true))
+                    return Png.Read (png, info);
+            case YkgImage.Gnp:
+                using (var body = new StreamRegion (stream, meta.DataOffset+4, meta.DataSize-4, true))
+                using (var png = new PrefixStream (PngPrefix, body))
+                    return Png.Read (png, info);
+            default:
+                throw new InvalidFormatException();
+            }
+        }
+
+        public override void Write (Stream file, ImageData image)
+        {
+            throw new System.NotImplementedException ("YkgFormat.Write not implemented");
+        }
+    }
+}