implemented 'Game System' CHR images.

2026-07-01 19:00:14 +08:00 · 2017-01-17 07:03:51 +04:00
parent 57497295cd
commit b4e05ff2db
4 changed files with 339 additions and 1 deletions
--- a/ArcFormats/GameSystem/ArcCHR.cs
+++ b/ArcFormats/GameSystem/ArcCHR.cs
@@ -0,0 +1,140 @@
+//! \file       ArcCHR.cs
+//! \date       Mon Jan 16 20:15:54 2017
+//! \brief      'Game System' character 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;
+using System.Collections.Generic;
+using System.ComponentModel.Composition;
+using System.IO;
+using System.Windows.Media;
+
+namespace GameRes.Formats.GameSystem
+{
+    [Export(typeof(ArchiveFormat))]
+    public class ChrOpener : ArchiveFormat
+    {
+        public override string         Tag { get { return "CHR/GAMESYSTEM"; } }
+        public override string Description { get { return "'Game System' character frames"; } }
+        public override uint     Signature { get { return 0; } }
+        public override bool  IsHierarchic { get { return false; } }
+        public override bool      CanWrite { get { return false; } }
+
+        static readonly Lazy<ImageFormat> s_ChrFormat = new Lazy<ImageFormat> (() => ImageFormat.FindByTag ("CHR"));
+
+        public override ArcFile TryOpen (ArcView file)
+        {
+            if (!file.Name.EndsWith (".CHR", StringComparison.InvariantCultureIgnoreCase)
+                || file.View.ReadUInt32 (0) != file.MaxOffset)
+                return null;
+            using (var input = file.CreateStream())
+            {
+                var info = s_ChrFormat.Value.ReadMetaData (input) as ChrMetaData;
+                if (null == info)
+                    return null;
+                input.Position = info.RgbSize;
+                uint overlay_size = input.ReadUInt32();
+                if (0 == overlay_size)
+                    return null;
+                input.ReadInt32();
+                int count = input.ReadInt32();
+                if (!IsSaneCount (count))
+                    return null;
+                int x = input.ReadInt16();
+                int y = input.ReadInt16();
+                int w = input.ReadInt16();
+                int h = input.ReadInt16() * count;
+                var frame_info = new ImageMetaData
+                {
+                    Width = (uint)w, Height = (uint)h, OffsetX = x, OffsetY = y, BPP = 32
+                };
+
+                var base_name = Path.GetFileNameWithoutExtension (file.Name);
+                var dir = new List<Entry> (2);
+                var entry = new ChrEntry
+                {
+                    Name = string.Format ("{0}#00", base_name),
+                    Offset = 0,
+                    Size = (uint)info.RgbSize,
+                    Info = info,
+                };
+                dir.Add (entry);
+                entry = new ChrEntry
+                {
+                    Name = string.Format ("{0}#01", base_name),
+                    Offset = info.RgbSize+4,
+                    Size = overlay_size,
+                    Info = frame_info,
+                };
+                dir.Add (entry);
+                return new ArcFile (file, this, dir);
+            }
+        }
+
+        public override IImageDecoder OpenImage (ArcFile arc, Entry entry)
+        {
+            var cent = (ChrEntry)entry;
+            var input = arc.File.CreateStream (entry.Offset, entry.Size);
+            if (cent.Info is ChrMetaData)
+                return new ChrDecoder (input, cent.Info);
+            else
+                return new ChrFrameDecoder (input, cent.Info);
+        }
+    }
+
+    internal class ChrEntry : Entry
+    {
+        public override string Type { get { return "image"; } }
+
+        public ImageMetaData    Info;
+    }
+
+    internal class ChrDecoder : BinaryImageDecoder
+    {
+        public ChrDecoder (IBinaryStream input, ImageMetaData info) : base (input, info)
+        { }
+
+        protected override ImageData GetImageData ()
+        {
+            var reader = new ChrReader (m_input, (ChrMetaData)Info);
+            var pixels = reader.UnpackBaseline();
+            return ImageData.CreateFlipped (Info, PixelFormats.Bgra32, null, pixels, reader.Stride);
+        }
+    }
+
+    internal class ChrFrameDecoder : BinaryImageDecoder
+    {
+        public ChrFrameDecoder (IBinaryStream input, ImageMetaData info) : base (input, info)
+        { }
+
+        protected override ImageData GetImageData ()
+        {
+            m_input.Position = 0x10;
+            int stride = (int)Info.Width * 4;
+            var pixels = new byte[stride * (int)Info.Height];
+            m_input.Read (pixels, 0, pixels.Length);
+            return ImageData.CreateFlipped (Info, PixelFormats.Bgr32, null, pixels, stride);
+
+        }
+    }
+}