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220 lines
8.5 KiB
C#
220 lines
8.5 KiB
C#
//! \file ImageLFG.cs
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//! \date 2018 Nov 06
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//! \brief Leaf 16-color image format.
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//
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// Copyright (C) 2018 by morkt
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//
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// Permission is hereby granted, free of charge, to any person obtaining a copy
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// of this software and associated documentation files (the "Software"), to
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// deal in the Software without restriction, including without limitation the
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// rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
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// sell copies of the Software, and to permit persons to whom the Software is
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// furnished to do so, subject to the following conditions:
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//
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// The above copyright notice and this permission notice shall be included in
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// all copies or substantial portions of the Software.
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//
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// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
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// FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
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// IN THE SOFTWARE.
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//
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using System;
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using System.ComponentModel.Composition;
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using System.IO;
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using System.Windows.Media;
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using System.Windows.Media.Imaging;
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namespace GameRes.Formats.Leaf
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{
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internal class LfgMetaData : ImageMetaData
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{
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public byte Mode;
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public byte KeyColor;
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public int ImageSize;
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}
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[Export(typeof(ImageFormat))]
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public class LfgFormat : ImageFormat
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{
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public override string Tag { get { return "LFG"; } }
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public override string Description { get { return "Leaf image format"; } }
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public override uint Signature { get { return 0x4641454C; } } // 'LEAFCODE'
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public override ImageMetaData ReadMetaData (IBinaryStream file)
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{
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var header = file.ReadHeader (0x30);
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if (!header.AsciiEqual ("LEAFCODE"))
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return null;
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int x = header.ToInt16 (0x20);
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int y = header.ToInt16 (0x22);
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return new LfgMetaData {
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Width = (uint)(header.ToInt16 (0x24) - x + 1) * 8,
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Height = (uint)(header.ToInt16 (0x26) - y + 1),
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OffsetX = x,
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OffsetY = y,
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BPP = 4,
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Mode = header[0x28],
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KeyColor = header[0x29],
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ImageSize = header.ToInt32 (0x2C),
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};
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}
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public override ImageData Read (IBinaryStream file, ImageMetaData info)
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{
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var reader = new LfgReader (file, (LfgMetaData)info);
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var pixels = reader.Unpack();
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return ImageData.Create (info, reader.Format, reader.Palette, pixels, reader.Stride);
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}
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public override void Write (Stream file, ImageData image)
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{
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throw new System.NotImplementedException ("LfgFormat.Write not implemented");
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}
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}
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internal class LfgReader
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{
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IBinaryStream m_input;
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byte[] m_output;
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int m_mode;
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int m_length;
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int m_stride;
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int m_height;
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int m_key_color;
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public PixelFormat Format { get { return PixelFormats.Indexed4; } }
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public int Stride { get { return m_stride; } }
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public BitmapPalette Palette { get; private set; }
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public LfgReader (IBinaryStream input, LfgMetaData info)
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{
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m_input = input;
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m_stride = (int)info.Width / 2;
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m_height = (int)info.Height;
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m_output = new byte[m_stride * m_height];
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m_mode = info.Mode;
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m_length = info.ImageSize;
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m_key_color = info.KeyColor;
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}
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byte[] m_frame = new byte[0x1000];
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public byte[] Unpack ()
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{
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m_input.Position = 8;
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Palette = ReadPalette();
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m_input.Position = 0x30;
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int frame_pos = 0xFEE;
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int dst = 0;
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int x = 0, y = 0;
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Action next_pixel;
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if (1 == m_mode)
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{
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next_pixel = () => {
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++dst;
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if (++x >= m_stride)
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{
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x = 0;
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dst = ++y * m_stride;
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}
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};
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}
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else
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{
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next_pixel = () => {
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dst += m_stride;
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if (++y >= m_height)
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{
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y = 0;
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dst = ++x;
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}
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};
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}
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int pixel_count = 0;
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int ctl = 0;
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byte mask = 0;
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while (pixel_count < m_length)
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{
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mask >>= 1;
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if (0 == mask)
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{
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ctl = m_input.ReadUInt8();
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mask = 0x80;
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}
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if ((ctl & mask) != 0)
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{
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byte color = ColorMap[m_input.ReadUInt8()];
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m_frame[frame_pos++ & 0xFFF] = color;
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m_output[dst] = color;
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next_pixel();
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++pixel_count;
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}
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else
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{
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int offset = m_input.ReadUInt16();
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int count = (offset & 0xF) + 3;
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offset >>= 4;
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while (count --> 0 && pixel_count < m_length)
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{
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byte color = m_frame[offset++ & 0xFFF];
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m_frame[frame_pos++ & 0xFFF] = color;
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m_output[dst] = color;
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next_pixel();
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++pixel_count;
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}
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}
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}
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return m_output;
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}
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BitmapPalette ReadPalette ()
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{
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var color_data = new byte[0x18 * 2];
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for (int i = 0; i < color_data.Length; i += 2)
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{
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byte c = m_input.ReadUInt8();
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color_data[i ] = (byte)((c >> 4) * 0x11);
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color_data[i+1] = (byte)((c & 0xF) * 0x11);
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}
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var colors = new Color[16];
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int src = 0;
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for (int i = 0; i < 16; ++i)
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{
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if (m_key_color == i)
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colors[i] = Color.FromArgb (0, color_data[src], color_data[src+1], color_data[src+2]);
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else
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colors[i] = Color.FromRgb (color_data[src], color_data[src+1], color_data[src+2]);
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src += 3;
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}
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// colors[15] = Color.FromRgb (0xFF, 0xFF, 0xFF);
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return new BitmapPalette (colors);
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}
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static readonly byte[] ColorMap = {
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0x00, 0x01, 0x10, 0x11, 0x02, 0x03, 0x12, 0x13, 0x20, 0x21, 0x30, 0x31, 0x22, 0x23, 0x32, 0x33,
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0x04, 0x05, 0x14, 0x15, 0x06, 0x07, 0x16, 0x17, 0x24, 0x25, 0x34, 0x35, 0x26, 0x27, 0x36, 0x37,
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0x40, 0x41, 0x50, 0x51, 0x42, 0x43, 0x52, 0x53, 0x60, 0x61, 0x70, 0x71, 0x62, 0x63, 0x72, 0x73,
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0x44, 0x45, 0x54, 0x55, 0x46, 0x47, 0x56, 0x57, 0x64, 0x65, 0x74, 0x75, 0x66, 0x67, 0x76, 0x77,
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0x08, 0x09, 0x18, 0x19, 0x0A, 0x0B, 0x1A, 0x1B, 0x28, 0x29, 0x38, 0x39, 0x2A, 0x2B, 0x3A, 0x3B,
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0x0C, 0x0D, 0x1C, 0x1D, 0x0E, 0x0F, 0x1E, 0x1F, 0x2C, 0x2D, 0x3C, 0x3D, 0x2E, 0x2F, 0x3E, 0x3F,
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0x48, 0x49, 0x58, 0x59, 0x4A, 0x4B, 0x5A, 0x5B, 0x68, 0x69, 0x78, 0x79, 0x6A, 0x6B, 0x7A, 0x7B,
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0x4C, 0x4D, 0x5C, 0x5D, 0x4E, 0x4F, 0x5E, 0x5F, 0x6C, 0x6D, 0x7C, 0x7D, 0x6E, 0x6F, 0x7E, 0x7F,
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0x80, 0x81, 0x90, 0x91, 0x82, 0x83, 0x92, 0x93, 0xA0, 0xA1, 0xB0, 0xB1, 0xA2, 0xA3, 0xB2, 0xB3,
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0x84, 0x85, 0x94, 0x95, 0x86, 0x87, 0x96, 0x97, 0xA4, 0xA5, 0xB4, 0xB5, 0xA6, 0xA7, 0xB6, 0xB7,
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0xC0, 0xC1, 0xD0, 0xD1, 0xC2, 0xC3, 0xD2, 0xD3, 0xE0, 0xE1, 0xF0, 0xF1, 0xE2, 0xE3, 0xF2, 0xF3,
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0xC4, 0xC5, 0xD4, 0xD5, 0xC6, 0xC7, 0xD6, 0xD7, 0xE4, 0xE5, 0xF4, 0xF5, 0xE6, 0xE7, 0xF6, 0xF7,
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0x88, 0x89, 0x98, 0x99, 0x8A, 0x8B, 0x9A, 0x9B, 0xA8, 0xA9, 0xB8, 0xB9, 0xAA, 0xAB, 0xBA, 0xBB,
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0x8C, 0x8D, 0x9C, 0x9D, 0x8E, 0x8F, 0x9E, 0x9F, 0xAC, 0xAD, 0xBC, 0xBD, 0xAE, 0xAF, 0xBE, 0xBF,
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0xC8, 0xC9, 0xD8, 0xD9, 0xCA, 0xCB, 0xDA, 0xDB, 0xE8, 0xE9, 0xF8, 0xF9, 0xEA, 0xEB, 0xFA, 0xFB,
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0xCC, 0xCD, 0xDC, 0xDD, 0xCE, 0xCF, 0xDE, 0xDF, 0xEC, 0xED, 0xFC, 0xFD, 0xEE, 0xEF, 0xFE, 0xFF
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};
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}
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}
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