(IBM): Ice Soft compressed bitmap.

ArcFormats/Ice/ImageIBM.cs

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+//! \file       ImageIBM.cs
+//! \date       2023 Aug 25
+//! \brief      Ice Soft compressed bitmap format.
+//
+// Copyright (C) 2023 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.ComponentModel.Composition;
+using System.IO;
+using System.Windows.Media.Imaging;
+using GameRes.Formats.Ankh;
+
+// [000324][Juice] Orgel ~Kesenai Melody~
+
+namespace GameRes.Formats.Ice
+{
+    internal class IbmMetaData : ImageMetaData
+    {
+        public int UnpackedSize;
+    }
+
+    [Export(typeof(ImageFormat))]
+    public class IbmFormat : ImageFormat
+    {
+        public override string         Tag { get => "IBM/ICE"; }
+        public override string Description { get => "Ice Soft compressed bitmap"; }
+        public override uint     Signature { get => 0x01575054; } // 'TPW'
+
+        public override ImageMetaData ReadMetaData (IBinaryStream file)
+        {
+            file.Position = 4;
+            int unpacked_size = file.ReadInt32();
+            if (unpacked_size <= 0)
+                return null;
+            var bmp_header = new byte[56];
+            GrpOpener.UnpackTpw (file, bmp_header);
+            using (var bmp = new BinMemoryStream (bmp_header, file.Name))
+            {
+                var bmp_info = Bmp.ReadMetaData (bmp);
+                if (null == bmp_info)
+                    return null;
+                return new IbmMetaData {
+                    Width  = bmp_info.Width,
+                    Height = bmp_info.Height,
+                    BPP    = bmp_info.BPP,
+                    UnpackedSize = unpacked_size,
+                };
+            }
+        }
+
+        public override ImageData Read (IBinaryStream file, ImageMetaData info)
+        {
+            var meta = (IbmMetaData)info;
+            var output = new byte[meta.UnpackedSize];
+            GrpOpener.UnpackTpw (file, output);
+            using (var bmp = new BinMemoryStream (output, file.Name))
+            {
+                var decoder = new BmpBitmapDecoder (bmp, BitmapCreateOptions.None, BitmapCacheOption.OnLoad);
+                var frame = decoder.Frames[0];
+                frame.Freeze();
+                return new ImageData (frame, info);
+            }
+        }
+
+        public override void Write (Stream file, ImageData image)
+        {
+            throw new System.NotImplementedException ("IbmFormat.Write not implemented");
+        }
+    }
+}