mirror of
https://github.com/crskycode/GARbro.git
synced 2024-11-24 06:05:35 +08:00
449 lines
17 KiB
C#
449 lines
17 KiB
C#
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//! \file ImageBMP.cs
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//! \date Tue Nov 10 10:31:23 2015
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//! \brief μ-GameOperationSystem compressed bitmap.
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//
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// Copyright (C) 2015 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 GameRes.Utility;
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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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namespace GameRes.Formats.uGOS
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{
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[Export(typeof(ImageFormat))]
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public class DetBmpFormat : ImageFormat
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{
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public override string Tag { get { return "BMP/uGOS"; } }
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public override string Description { get { return "μ-GameOperationSystem compressed bitmap"; } }
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public override uint Signature { get { return 0; } }
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public DetBmpFormat ()
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{
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Extensions = new string[] { "bmp" };
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Signatures = new uint[] { 0x206546, 0x186546 };
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}
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public override ImageMetaData ReadMetaData (Stream stream)
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{
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var header = new byte[0x10];
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if (header.Length != stream.Read (header, 0, header.Length))
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return null;
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return new ImageMetaData
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{
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Width = LittleEndian.ToUInt16 (header, 4),
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Height = LittleEndian.ToUInt16 (header, 6),
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BPP = header[2],
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};
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}
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public override ImageData Read (Stream stream, ImageMetaData info)
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{
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using (var reader = new Reader (stream, info))
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{
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reader.Unpack();
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return ImageData.CreateFlipped (info, reader.Format, null, reader.Data, reader.Stride);
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}
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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 ("DetBmpFormat.Write not implemented");
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}
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internal sealed class Reader : IDisposable
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{
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BinaryReader m_input;
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byte[] m_output;
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int m_width;
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int m_height;
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int m_bpp;
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public PixelFormat Format { get; private set; }
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public byte[] Data { get { return m_output; } }
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public int Stride { get; private set; }
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public Reader (Stream input, ImageMetaData info)
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{
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m_input = new ArcView.Reader (input);
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m_width = (int)info.Width;
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m_height = (int)info.Height;
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m_bpp = info.BPP;
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m_output = new byte[m_width*m_height*4];
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Format = 32 == m_bpp ? PixelFormats.Bgra32 : PixelFormats.Bgr32;
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Stride = m_width * 4;
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InitTable0();
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}
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static readonly sbyte[] OffsetsX = {
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-1, 0, 1, -1, -2, -2, -2,
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-1, 0, 1, 2, 2, -3, -3, -3, -3, -2,
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-1, 0, 1, 2, 3, 3, 3, -4, -4, -4, -4, -4, -3, -2,
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-1, 0, 1, 2, 3, 4, 4, 4, 4
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};
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static readonly sbyte[] OffsetsY = {
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0, -1, -1, -1,
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0, -1, -2, -2, -2, -2, -2, -1,
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0, -1, -2, -3, -3, -3, -3, -3, -3, -3, -2, -1,
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0, -1, -2, -3, -4, -4, -4, -4, -4, -4, -4, -4, -4, -3, -2, -1
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};
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byte[] byte_4CAD28 = new byte[512];
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byte[] byte_4CAF28 = new byte[512];
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int[] dword_4CB128 = new int[163];
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int[] dword_4CB750 = new int[40];
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int[] dword_4CB7F0 = new int[163];
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byte[] byte_4CBA80 = new byte[256];
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uint m_bits;
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public void Unpack ()
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{
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m_input.BaseStream.Position = 0x10;
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InitTable1();
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InitTable2();
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InitTable3();
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m_bits = 0x80;
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int dst = 0;
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while (dst < m_output.Length)
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{
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int v32 = ReadNext();
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int v33 = v32 - 2;
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int v34 = dword_4CB7F0[v33];
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int v35 = dword_4CB128[v34];
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int v36 = v33;
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int v37 = Math.Max (v32 - 4, 0);
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for (int v39 = v33 - v37; v39 > 0; --v39)
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{
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dword_4CB7F0[v36] = dword_4CB7F0[v36-1];
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--v36;
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}
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dword_4CB7F0[v36] = v34;
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if (2 == v35)
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{
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int v49 = ReadNext();
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int v57 = ReadNext();
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int offset = (((v49 & 1) - 1) ^ (v57 - 2)) - m_width * ((v49 & 1) - 1 + v49 / 2);
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Buffer.BlockCopy (m_output, dst+4*offset, m_output, dst, 4);
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dst += 4;
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continue;
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}
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if (v35 >= 43)
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{
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int v100;
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if (v35 >= 123)
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v100 = LittleEndian.ToInt32 (m_output, dst - 4 * m_width)
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+ LittleEndian.ToInt32 (m_output, dst + 4 * dword_4CB750[v35-123])
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- LittleEndian.ToInt32 (m_output, dst + 4 * (dword_4CB750[v35-123] - m_width));
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else if (v35 >= 83)
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v100 = LittleEndian.ToInt32 (m_output, dst + 4 * dword_4CB750[v35-83])
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+ LittleEndian.ToInt32 (m_output, dst - 4)
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- LittleEndian.ToInt32 (m_output, dst + 4 * dword_4CB750[v35-83] - 4);
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else
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v100 = LittleEndian.ToInt32 (m_output, dst + 4 * dword_4CB750[v35-43]);
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int v57 = ReadNext();
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int v113 = (v57 - 2) ^ -(v57 & 1);
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v100 += (v113 << 15);
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v57 = ReadNext();
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v113 = (v57 - 2) ^ -(v57 & 1);
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v100 += (v113 << 7);
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v57 = ReadNext();
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v113 = (v57 - 2) ^ -(v57 & 1);
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v113 -= v113 >> 31; // cdq; sub eax, edx
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LittleEndian.Pack (v100 + (v113 >> 1), m_output, dst);
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dst += 4;
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continue;
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}
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if (0 == v35)
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{
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// v60 = (((src1[2] + ((src1[1] + (*src1 << 8)) << 8)) << 8) ^ 0x80000080u) >> byte_4CBA80[v38];
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uint v60 = (uint)m_input.ReadByte() << 16;
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uint v38 = m_bits & 0xFF;
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v60 |= (uint)m_input.ReadByte () << 8;
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v60 |= m_input.ReadByte ();
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v60 <<= 8;
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v60 = (v60 ^ 0x80000080u) >> byte_4CBA80[v38];
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m_bits = v60;
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LittleEndian.Pack ((v38 << 16) ^ (v60 >> 8), m_output, dst);
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dst += 4;
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continue;
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}
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int v70 = ReadNext();
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int v77 = ReadNext();
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int v78 = (((v70 & 1) - 1) ^ (v77 - 2)) - m_width * ((v70 & 1) - 1 + (v70 >> 1));
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int src2 = dst + 4 * v78;
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if (1 == v35)
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{
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int count = ReadNext() * 4;
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Binary.CopyOverlapped (m_output, src2, dst, count);
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dst += count;
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continue;
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}
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int d;
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if (0x80 == (m_bits & 0xFF))
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{
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byte n = m_input.ReadByte();
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d = n >> 7;
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m_bits = (uint)(n << 1 | 1);
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}
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else
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{
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d = (int)(m_bits & 0xFF) >> 7;
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m_bits <<= 1;
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}
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int v90 = dword_4CB750[v35-3];
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int a = LittleEndian.ToInt32 (m_output, src2);
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int b = LittleEndian.ToInt32 (m_output, dst + 4 * v90);
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int c = LittleEndian.ToInt32 (m_output, src2 + 4 * v90);
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int v95 = (a & 0xFF00FF) + (b & 0xFF00FF) - (c & 0xFF00FF);
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int v96 = (v95 & 0xFF00FF) + (((a & 0xFF00) + (b & 0xFF00) - (c & 0xFF00)) & 0xFF00);
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LittleEndian.Pack (v96, m_output, dst);
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dst += 4;
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if (d != 0)
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{
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a = LittleEndian.ToInt32 (m_output, src2 + 4);
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b = LittleEndian.ToInt32 (m_output, dst + 4 * v90);
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c = LittleEndian.ToInt32 (m_output, src2 + 4 * v90 + 4);
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v95 = (a & 0xFF00FF) + (b & 0xFF00FF) - (c & 0xFF00FF);
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v96 = (v95 & 0xFF00FF) + (((a & 0xFF00) + (b & 0xFF00) - (c & 0xFF00)) & 0xFF00);
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LittleEndian.Pack (v96, m_output, dst);
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dst += 4;
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}
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}
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if (32 == m_bpp)
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{
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dst = 3;
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while (dst < m_output.Length)
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{
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byte alpha = sub_415530(8);
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int count = sub_415440() + 1;
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while (count > 0)
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{
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m_output[dst] = alpha;
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dst += 4;
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--count;
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}
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}
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}
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}
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int ReadNext ()
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{
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m_bits &= 0xFF;
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int v26 = byte_4CAD28[2 * m_bits];
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int v23 = byte_4CAD28[2 * m_bits + 1];
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while (0 == v23)
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{
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int b = m_input.ReadByte();
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v26 += byte_4CAF28[2 * b];
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v23 = byte_4CAF28[2 * b + 1];
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}
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int v27 = byte_4CBA80[v23];
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int v28 = v23 + 256;
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if (v26 - v27 > 0)
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{
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uint v29 = (uint)(v26 - v27 - 1);
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int v30 = m_input.ReadByte() + (int)((v28 << v27) & 0xFFFFFF00);
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if ((int)v29 >= 8)
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{
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for (uint v31 = v29 >> 3; v31 != 0; --v31)
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{
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v30 = (v30 << 8) | m_input.ReadByte();
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}
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v29 -= 8 * (v29 >> 3);
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}
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v28 = v30 << 1 | 1;
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v26 = (int)v29;
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}
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m_bits = (uint)(v28 << v26);
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return (int)(m_bits >> 8);
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}
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byte sub_415530 (int a3)
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{
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m_bits &= 0xFF;
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uint v3 = m_bits;
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int v4 = byte_4CBA80[m_bits];
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int v5 = a3 - v4;
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uint alpha; // eax@5
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if (a3 - v4 <= 0)
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{
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alpha = v3 >> (8 - a3);
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m_bits = (byte)(v3 << a3);
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}
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else
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{
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int v6 = (int)(v3 >> (8 - v4));
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if ((uint)v5 > 8)
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{
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uint v7 = ((uint)(v5 - 9) >> 3) + 1;
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do
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{
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v6 = m_input.ReadByte() + (v6 << 8);
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v5 -= 8;
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--v7;
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}
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while (0 != v7);
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}
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m_bits = m_input.ReadByte();
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alpha = (uint)((v6 << v5) + (m_bits >> (8 - v5)));
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m_bits = ((m_bits << v5) + (1u << (v5 - 1))) & 0xFFu;
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}
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return (byte)alpha;
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}
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int sub_415440 ()
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{
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m_bits &= 0xFF;
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int v2 = (int)m_bits;
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int i = byte_4CAD28[2 * v2];
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uint v4 = byte_4CAD28[2 * v2 + 1];
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while (0 == v4)
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{
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v2 = m_input.ReadByte();
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i += byte_4CAF28[2 * v2];
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v4 = byte_4CAF28[2 * v2 + 1];
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}
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m_bits = v4;
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int v5 = byte_4CBA80[v4];
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if (i - v5 <= 0)
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{
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m_bits = v4 << i;
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return (int)((uint)(v4 + 256) >> (8 - i)) - 2;
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}
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else
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{
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int v6 = i - v5;
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uint v7 = (uint)(v4 + 256) >> (8 - v5);
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if (v6 > 8)
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{
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for (uint v8 = ((uint)(v6 - 9) >> 3) + 1; v8 != 0; --v8)
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{
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v7 = (v7 << 8) | m_input.ReadByte();
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}
|
||
|
|
v6 += -8 * (int)(((uint)(v6 - 9) >> 3) + 1);
|
||
|
|
}
|
||
|
|
m_bits = m_input.ReadByte();
|
||
|
|
uint n = (v7 << v6) + (m_bits >> (8 - v6));
|
||
|
|
m_bits = (m_bits << v6) + (1u << (v6 - 1));
|
||
|
|
return (int)n - 2;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
void InitTable0 () //sub_4153B0()
|
||
|
|
{
|
||
|
|
for (int i = 0; i < 256; ++i)
|
||
|
|
{
|
||
|
|
byte v1 = 0;
|
||
|
|
sbyte v2 = (sbyte)i;
|
||
|
|
if (i != 0)
|
||
|
|
{
|
||
|
|
while (v2 < 0)
|
||
|
|
{
|
||
|
|
v2 <<= 1;
|
||
|
|
++v1;
|
||
|
|
}
|
||
|
|
v2 <<= 1;
|
||
|
|
if (0 == v2)
|
||
|
|
--v1;
|
||
|
|
}
|
||
|
|
byte_4CAD28[2 * i] = (byte)(v1 + 1);
|
||
|
|
byte_4CAD28[2 * i + 1] = (byte)v2;
|
||
|
|
byte v4 = 0;
|
||
|
|
sbyte v3 = (sbyte)i;
|
||
|
|
if (i != 0)
|
||
|
|
{
|
||
|
|
while (v3 < 0)
|
||
|
|
{
|
||
|
|
v3 <<= 1;
|
||
|
|
++v4;
|
||
|
|
}
|
||
|
|
v3 <<= 1;
|
||
|
|
}
|
||
|
|
byte_4CAF28[2 * i] = v4;
|
||
|
|
byte_4CAF28[2 * i + 1] = (byte)(v3 + (1 << v4));
|
||
|
|
byte v5 = 0;
|
||
|
|
for (int j = i; 0 != (j & 0x7F); j <<= 1)
|
||
|
|
++v5;
|
||
|
|
byte_4CBA80[i] = v5;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
void InitTable1 () // init_table_415FF0()
|
||
|
|
{
|
||
|
|
int[] dword_4CB3B8 = new int[163];
|
||
|
|
dword_4CB3B8[0] = 0;
|
||
|
|
dword_4CB3B8[1] = 1;
|
||
|
|
dword_4CB3B8[2] = 2;
|
||
|
|
int v1 = 44;
|
||
|
|
for (int i = 3; i < 43; ++i)
|
||
|
|
{
|
||
|
|
dword_4CB3B8[i] = i + 120;
|
||
|
|
dword_4CB3B8[i+40] = i;
|
||
|
|
dword_4CB3B8[i+80] = v1-1;
|
||
|
|
dword_4CB3B8[i+120] = v1;
|
||
|
|
v1 += 2;
|
||
|
|
}
|
||
|
|
for (int i = 0; i < 163; ++i)
|
||
|
|
{
|
||
|
|
dword_4CB128[dword_4CB3B8[i]] = i;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
void InitTable2 () // init_table_416070()
|
||
|
|
{
|
||
|
|
for (int i = 0; i < 163; ++i)
|
||
|
|
{
|
||
|
|
dword_4CB7F0[i] = i;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
void InitTable3 ()
|
||
|
|
{
|
||
|
|
for (int i = 0; i < 40; ++i)
|
||
|
|
{
|
||
|
|
dword_4CB750[i] = OffsetsX[i] + m_width * OffsetsY[i];
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
#region IDisposable Members
|
||
|
|
bool _disposed = false;
|
||
|
|
public void Dispose ()
|
||
|
|
{
|
||
|
|
if (!_disposed)
|
||
|
|
{
|
||
|
|
m_input.Dispose();
|
||
|
|
_disposed = true;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
#endregion
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|