implemented C25 images.

2026-07-08 01:30:18 +08:00 · 2017-11-20 23:57:44 +04:00
parent f7b9642a41
commit e3eba7e0f6
4 changed files with 202 additions and 41 deletions
--- a/ArcFormats/Foster/ImageC25.cs
+++ b/ArcFormats/Foster/ImageC25.cs
@@ -0,0 +1,112 @@
+//! \file       ImageC25.cs
+//! \date       2017 Nov 20
+//! \brief      BeF game engine 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.ComponentModel.Composition;
+using System.IO;
+using System.Windows.Media;
+
+namespace GameRes.Formats.Foster
+{
+    /// <summary>
+    /// ShiinaRio S25 predecessor.
+    /// </summary>
+    [Export(typeof(ImageFormat))]
+    public class C25Format : C24Format
+    {
+        public override string         Tag { get { return "C25"; } }
+        public override string Description { get { return "BeF game engine image format"; } }
+        public override uint     Signature { get { return 0x00353243; } } // 'C25'
+        public override bool      CanWrite { get { return false; } }
+
+        public override ImageMetaData ReadMetaData (IBinaryStream file)
+        {
+            var header = file.ReadHeader (12);
+            int count = header.ToInt32 (4);
+            if (count <= 0)
+                return null;
+            return ReadMetaData (file, header.ToUInt32 (8), 32);
+        }
+
+        public override ImageData Read (IBinaryStream file, ImageMetaData info)
+        {
+            using (var reader = new C25Decoder (file, (C24MetaData)info, true))
+                return reader.Image;
+        }
+
+        public override void Write (Stream file, ImageData image)
+        {
+            throw new System.NotImplementedException ("C25Format.Write not implemented");
+        }
+    }
+
+    internal class C25Decoder : CDecoderBase
+    {
+        public C25Decoder (IBinaryStream file, C24MetaData info, bool leave_open = false)
+            : base (file, info, PixelFormats.Bgra32, leave_open)
+        {
+        }
+
+        protected override void Unpack ()
+        {
+            var rows = ReadRows();
+            int dst = 0;
+            int width = (int)m_info.Width;
+            foreach (uint row_offset in rows)
+            {
+                m_input.Position = row_offset;
+                for (int x = 0; x < width; )
+                {
+                    int count = m_input.ReadUInt8();
+                    if (count > 0x7F)
+                    {
+                        int bpp = 3;
+                        count -= 0x80;
+                        if (count >= 0x70)
+                        {
+                            bpp = 4;
+                            count -= 0x70;
+                        }
+                        if (0 == count)
+                            count = m_input.ReadUInt16();
+                        for (int i = 0; i < count; ++i)
+                        {
+                            m_input.Read (m_output, dst, bpp);
+                            dst += bpp;
+                            if (3 == bpp)
+                                m_output[dst++] = 0xFF;
+                        }
+                    }
+                    else
+                    {
+                        if (0 == count)
+                            count = m_input.ReadUInt16();
+                        dst += count * 4;
+                    }
+                    x += count;
+                }
+            }
+        }
+    }
+}