implemented CMP archives, BGD and CGD images.

ArcFormats/GameSystem/ImageBGD.cs

@@ -0,0 +1,114 @@
+//! \file       ImageBGD.cs
+//! \date       Mon Jan 16 06:43:56 2017
+//! \brief      'Game System' background 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.GameSystem
+{
+    [Export(typeof(ImageFormat))]
+    public class BgdFormat : ImageFormat
+    {
+        public override string         Tag { get { return "BGD"; } }
+        public override string Description { get { return "'GameSystem' background image format"; } }
+        public override uint     Signature { get { return 0; } }
+
+        public override ImageMetaData ReadMetaData (IBinaryStream file)
+        {
+            if (file.Signature+0x10 != file.Length)
+                return null;
+            var header = file.ReadHeader (0x10);
+            uint width = header.ToUInt32 (4);
+            uint height = header.ToUInt32 (8);
+            if (0 == width || width > 0x8000 || 0 == height || height > 0x8000)
+                return null;
+            return new ImageMetaData
+            {
+                Width = width,
+                Height = height,
+                BPP = 24,
+            };
+        }
+
+        public override ImageData Read (IBinaryStream file, ImageMetaData info)
+        {
+            int total_pixels = (int)info.Width * (int)info.Height;
+            var pixels = new byte[total_pixels * 3];
+            int count = total_pixels >> 1;
+            int dst = 0;
+            int s1 = 1, s2 = 1, s3 = 1;
+            int r = 0, g = 0, b = 0;
+            file.Position = 0x10;
+            for (int i = 0; i < count; ++i)
+            {
+                byte c = file.ReadUInt8();
+                s1 = s1 << 4 | c & 0xF;
+                s2 = s2 << 4 | (c >> 4) & 0xF;
+                b += RgbShift[s1];
+                g += RgbShift[s2];
+                c = file.ReadUInt8();
+                s3 = s3 << 4 | c & 0xF;
+                r += RgbShift[s3];
+                pixels[dst++] = (byte)b;
+                pixels[dst++] = (byte)g;
+                pixels[dst++] = (byte)r;
+                s3 = ShiftTable[s3] << 4 | (c >> 4) & 0xF;
+                c = file.ReadUInt8();
+                s1 = ShiftTable[s1] << 4 | c & 0xF;
+                s2 = ShiftTable[s2] << 4 | (c >> 4) & 0xF;
+                b += RgbShift[s1];
+                g += RgbShift[s2];
+                r += RgbShift[s3];
+                s1 = ShiftTable[s1];
+                s2 = ShiftTable[s2];
+                s3 = ShiftTable[s3];
+                pixels[dst++] = (byte)b;
+                pixels[dst++] = (byte)g;
+                pixels[dst++] = (byte)r;
+            }
+            return ImageData.CreateFlipped (info, PixelFormats.Bgr24, null, pixels, (int)info.Width*3);
+        }
+
+        public override void Write (Stream file, ImageData image)
+        {
+            throw new System.NotImplementedException ("BgdFormat.Write not implemented");
+        }
+
+        static readonly byte[] ShiftTable = {
+            0, 0, 0, 1, 1, 1, 1, 1, 0, 0, 0, 1, 1, 1, 1, 1,
+            0, 0, 1, 1, 2, 2, 1, 1, 0, 0, 1, 1, 2, 2, 1, 1,
+            1, 1, 2, 2, 2, 2, 1, 1, 1, 1, 2, 2, 2, 2, 1, 1,
+        };
+        static readonly short[] RgbShift = {
+             1,     2,     4,     8,  0x10,  0x26,  0x50,  0xAA,
+            -1,    -2,    -4,    -8, -0x10, -0x26, -0x50, -0xAA,
+             2,     4,     6,  0x0C,  0x18,  0x30,  0x60,  0xC0,
+            -2,    -4,    -6, -0x0C, -0x18, -0x30, -0x60, -0xC0,
+             5,  0x0A,  0x14,  0x1E,  0x32,  0x50,  0x82,  0xD2,
+            -5, -0x0A, -0x14, -0x1E, -0x32, -0x50, -0x82, -0xD2,
+        };
+    }
+}