implemented FA2 archives and C24 images.

ArcFormats/Foster/ImageC24.cs

@@ -0,0 +1,162 @@
+//! \file       ImageC24.cs
+//! \date       Sun Feb 19 13:13:16 2017
+//! \brief      Foster 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
+{
+    internal class C24MetaData : ImageMetaData
+    {
+        public uint DataOffset;
+    }
+
+    /// <summary>
+    /// ShiinaRio S25 predecessor.
+    /// </summary>
+    [Export(typeof(ImageFormat))]
+    public class C24Format : ImageFormat
+    {
+        public override string         Tag { get { return "C24"; } }
+        public override string Description { get { return "Foster game engine image format"; } }
+        public override uint     Signature { get { return 0x00343243; } } // 'C24'
+
+        public override ImageMetaData ReadMetaData (IBinaryStream file)
+        {
+            var header = file.ReadHeader (12);
+            int count = header.ToInt32 (4);
+            if (count <= 0)
+                return null;
+            file.Position = header.ToUInt32 (8);
+            var info = new C24MetaData { BPP = 24 };
+            info.Width = file.ReadUInt32();
+            info.Height = file.ReadUInt32();
+            info.OffsetX = file.ReadInt32();
+            info.OffsetY = file.ReadInt32();
+            info.DataOffset = (uint)file.Position;
+            return info;
+        }
+
+        public override ImageData Read (IBinaryStream file, ImageMetaData info)
+        {
+            using (var reader = new C24Decoder (file, (C24MetaData)info, true))
+                return reader.Image;
+        }
+
+        public override void Write (Stream file, ImageData image)
+        {
+            throw new System.NotImplementedException ("C24Format.Write not implemented");
+        }
+    }
+
+    internal sealed class C24Decoder : IImageDecoder
+    {
+        IBinaryStream   m_input;
+        C24MetaData     m_info;
+        byte[]          m_output;
+        bool            m_should_dispose;
+        ImageData       m_image;
+
+        public Stream            Source { get { m_input.Position = 0; return m_input.AsStream; } }
+        public ImageFormat SourceFormat { get { return null; } }
+        public ImageMetaData       Info { get { return m_info; } }
+
+        public ImageData Image
+        {
+            get
+            {
+                if (null == m_image)
+                {
+                    var pixels = Unpack();
+                    m_image = ImageData.Create (m_info, PixelFormats.Bgr24, null, pixels);
+                }
+                return m_image;
+            }
+        }
+
+        public C24Decoder (IBinaryStream file, C24MetaData info, bool leave_open = false)
+        {
+            m_input = file;
+            m_info = info;
+            m_output = new byte[3 * m_info.Width * m_info.Height];
+            m_should_dispose = !leave_open;
+        }
+
+        public byte[] Unpack ()
+        {
+            m_input.Position = m_info.DataOffset;
+            var rows = new uint[m_info.Height];
+            for (int i = 0; i < rows.Length; ++i)
+                rows[i] = m_input.ReadUInt32();
+            int dst = 0;
+            int width = (int)m_info.Width;
+            foreach (uint row_offset in rows)
+            {
+                m_input.Position = row_offset;
+                bool rle = false;
+                for (int x = 0; x < width; )
+                {
+                    int count = m_input.ReadUInt8();
+                    if (!rle)
+                    {
+                        if (0xFF == count)
+                            count = m_input.ReadUInt16();
+                        int byte_count = count * 3;
+                        for (int i = 0; i < byte_count; ++i)
+                            m_output[dst++] = 0xFF;
+                    }
+                    else
+                    {
+                        if (0 == count)
+                            count = m_input.ReadUInt16();
+                        int byte_count = count * 3;
+                        m_input.Read (m_output, dst, byte_count);
+                        dst += byte_count;
+                    }
+                    x += count;
+                    rle = !rle;
+                }
+            }
+            return m_output;
+        }
+
+        #region IDisposable Members
+        bool m_disposed = false;
+        public void Dispose ()
+        {
+            if (!m_disposed)
+            {
+                if (m_should_dispose)
+                {
+                    m_input.Dispose();
+                }
+                m_disposed = true;
+            }
+            System.GC.SuppressFinalize (this);
+        }
+        #endregion
+    }
+}