implemented NekoSDK archives.

2026-07-08 01:30:18 +08:00 · 2016-08-02 16:40:31 +04:00
parent 0732a9cf45
commit f049441cb7
4 changed files with 179 additions and 1 deletions
--- a/ArcFormats/NekoSDK/ImageALP.cs
+++ b/ArcFormats/NekoSDK/ImageALP.cs
@@ -0,0 +1,69 @@
+//! \file       ImageALP.cs
+//! \date       Tue Aug 02 15:35:56 2016
+//! \brief      NekoSDK BMP alpha-channel extension.
+//
+// Copyright (C) 2016 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.Windows.Media;
+
+namespace GameRes.Formats.NekoSDK
+{
+    [Export(typeof(IBmpExtension))]
+    public class AlpBitmap : IBmpExtension
+    {
+        public ImageData Read (Stream file, BmpMetaData info)
+        {
+            if (info.BPP != 24 && info.BPP != 32 || !file.CanSeek)
+                return null;
+            var alp_name = Path.ChangeExtension (info.FileName, "alp");
+            if (alp_name.Equals (info.FileName, StringComparison.InvariantCultureIgnoreCase)
+                || !VFS.FileExists (alp_name))
+                return null;
+            var alpha_size = info.Width * info.Height;
+            var alpha = new byte[alpha_size];
+            using (var alp = VFS.OpenStream (alp_name))
+            {
+                if (alpha.Length != alp.Read (alpha, 0, alpha.Length) || alp.ReadByte() != -1)
+                    return null;
+            }
+            file.Position = info.HeaderLength;
+            int dst_stride = (int)info.Width * 4;
+            var pixels = new byte[(int)info.Height * dst_stride];
+            int src_pixel_size = info.BPP / 8;
+            int dst = (int)(info.Height-1) * dst_stride;
+            for (int y = (int)info.Height-1; y >= 0; --y)
+            {
+                int a_src = (int)info.Width * y;
+                for (int x = 0; x < dst_stride; x += 4)
+                {
+                    file.Read (pixels, dst+x, src_pixel_size);
+                    pixels[dst+x+3] = alpha[a_src++];
+                }
+                dst -= dst_stride;
+            }
+            return ImageData.Create (info, PixelFormats.Bgra32, null, pixels, dst_stride);
+        }
+    }
+}