GSP archives and BMZ bitmaps implementation.

ArcFormats/ImageBMZ.cs

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+//! \file       ImageBMZ.cs
+//! \date       Wed Mar 04 11:48:31 2015
+//! \brief      Compressed bitmap image format.
+//
+// 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.ComponentModel.Composition;
+using System.IO;
+using System.Text;
+using GameRes.Utility;
+using ZLibNet;
+
+namespace GameRes.Formats.BlackRainbow
+{
+    [Export(typeof(ImageFormat))]
+    public class BmzFormat : BmpFormat
+    {
+        public override string         Tag { get { return "BMZ"; } }
+        public override string Description { get { return "Compressed bitmap format"; } }
+        public override uint     Signature { get { return 0x33434c5au; } } // 'ZLC3'
+
+        public override void Write (Stream file, ImageData image)
+        {
+            using (var bmp = new MemoryStream())
+            {
+                base.Write (bmp, image);
+                using (var output = new BinaryWriter (file, Encoding.ASCII, true))
+                {
+                    output.Write (Signature);
+                    output.Write ((uint)bmp.Length);
+                }
+                bmp.Position = 0;
+                using (var zstream = new ZLibStream (file, CompressionMode.Compress, CompressionLevel.Level9, true))
+                    bmp.CopyTo (zstream);
+            }
+        }
+
+        public override ImageMetaData ReadMetaData (Stream stream)
+        {
+            var header = new byte[8];
+            if (header.Length != stream.Read (header, 0, header.Length))
+                return null;
+            using (var zstream = new ZLibStream (stream, CompressionMode.Decompress, true))
+                return base.ReadMetaData (zstream);
+        }
+
+        public override ImageData Read (Stream stream, ImageMetaData info)
+        {
+            stream.Seek (8, SeekOrigin.Current);
+            using (var zstream = new ZLibStream (stream, CompressionMode.Decompress, true))
+                return base.Read (zstream, info);
+        }
+    }
+}