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GARbro-mirror/ArcFormats/ScrPlayer/ImageIMG.cs

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//! \file ImageIMG.cs
//! \date 2023 Aug 30
//! \brief ScrPlayer image format.
//
// Copyright (C) 2023 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 GameRes.Utility;
using System;
using System.ComponentModel.Composition;
using System.IO;
using System.Windows.Media;
// [990709][Love Gun] Koi no Sweet Tart wa Ikaga
namespace GameRes.Formats.ScrPlayer
{
[Export(typeof(ImageFormat))]
public class ImgFormat : ImageFormat
{
public override string Tag { get => "IMG"; }
public override string Description { get => "ScrPlayer image format"; }
public override uint Signature { get => 0x20474D49; } // 'IMG '
public override ImageMetaData ReadMetaData (IBinaryStream file)
{
var header = file.ReadHeader (0x18);
int bpp = header.ToUInt16 (0x10);
if (bpp != 24 && bpp != 32)
return null;
return new ImageMetaData {
Width = header.ToUInt16 (0xC),
Height = header.ToUInt16 (0xE),
BPP = bpp,
};
}
public override ImageData Read (IBinaryStream file, ImageMetaData info)
{
using (var reader = new ImgReader (file, info))
return reader.Unpack();
}
public override void Write (Stream file, ImageData image)
{
throw new System.NotImplementedException ("ImgFormat.Write not implemented");
}
}
internal sealed class ImgReader : IDisposable
{
ImgBitStream m_input;
ImageMetaData m_info;
int m_stride;
byte[] m_output;
public PixelFormat Format { get; private set; }
public ImgReader (IBinaryStream input, ImageMetaData info)
{
m_input = new ImgBitStream (input.AsStream, true);
m_info = info;
m_stride = m_info.iWidth * 4;
m_output = new byte[m_stride * (m_info.iHeight + 1)];
Format = m_info.BPP == 32 ? PixelFormats.Bgra32 : PixelFormats.Bgr32;
}
public ImageData Unpack ()
{
m_input.Input.Position = 0x18;
if (32 == m_info.BPP)
Unpack32bpp();
else
Unpack24bpp();
return ImageData.Create (m_info, Format, null, m_output);
}
byte[] m_row_buffer = new byte[0x2580];
int[] m_rows_ptr = new int[3] { 0, 0xC80, 0xC80 * 2 };
void Unpack24bpp ()
{
var offset_table = Img2Reader.OffsetTable.Clone() as int[];
int dst = 0;
for (int y = 0; y < m_info.iHeight; ++y)
{
int row_pos = m_rows_ptr[2];
m_rows_ptr[2] = m_rows_ptr[1];
m_rows_ptr[1] = m_rows_ptr[0];
m_rows_ptr[0] = row_pos;
for (int x = 0; x < m_info.iWidth; )
{
int ctl = m_input.GetBits (ControlTable1, 13);
if (0xEF == ctl)
ctl += m_input.GetBits (ControlTable2, 11);
int pos = m_input.GetBits (PosTable24, 5) * 2;
int x_offset = offset_table[pos];
int y_offset = offset_table[pos + 1];
if (pos > 0)
{
offset_table[pos] = offset_table[pos-2];
offset_table[pos+1] = offset_table[pos-1];
offset_table[pos-2] = x_offset;
offset_table[pos-1] = y_offset;
}
int src = m_rows_ptr[y_offset] + (x + x_offset) * 4;
if (ctl >= 0xD8)
{
int count = ctl - 0xD6;
Binary.CopyOverlapped (m_row_buffer, src, row_pos, count * 4);
row_pos += count * 4;
x += count;
}
else
{
switch (ColorCode[ctl])
{
case 0:
m_row_buffer[row_pos + 2] = (byte)(m_row_buffer[src + 2] - MapRed[ctl]);
m_row_buffer[row_pos + 1] = (byte)(m_row_buffer[src + 1] - MapGreen[ctl]);
m_row_buffer[row_pos ] = (byte)(m_row_buffer[src ] - MapBlue[ctl]);
break;
case 1:
m_row_buffer[row_pos + 2] = (byte)(m_row_buffer[src + 2] - GetDelta());
m_row_buffer[row_pos + 1] = (byte)(m_row_buffer[src + 1] - MapGreen[ctl]);
m_row_buffer[row_pos ] = (byte)(m_row_buffer[src ] - MapBlue[ctl]);
break;
case 2:
m_row_buffer[row_pos + 2] = (byte)(m_row_buffer[src + 2] - MapRed[ctl]);
m_row_buffer[row_pos + 1] = (byte)(m_row_buffer[src + 1] - GetDelta());
m_row_buffer[row_pos ] = (byte)(m_row_buffer[src ] - MapBlue[ctl]);
break;
case 3:
m_row_buffer[row_pos + 2] = (byte)(m_row_buffer[src + 2] - GetDelta());
m_row_buffer[row_pos + 1] = (byte)(m_row_buffer[src + 1] - GetDelta());
m_row_buffer[row_pos ] = (byte)(m_row_buffer[src ] - MapBlue[ctl]);
break;
case 4:
m_row_buffer[row_pos + 2] = (byte)(m_row_buffer[src + 2] - MapRed[ctl]);
m_row_buffer[row_pos + 1] = (byte)(m_row_buffer[src + 1] - MapGreen[ctl]);
m_row_buffer[row_pos ] = (byte)(m_row_buffer[src ] - GetDelta());
break;
case 5:
m_row_buffer[row_pos + 2] = (byte)(m_row_buffer[src + 2] - GetDelta());
m_row_buffer[row_pos + 1] = (byte)(m_row_buffer[src + 1] - MapGreen[ctl]);
m_row_buffer[row_pos ] = (byte)(m_row_buffer[src ] - GetDelta());
break;
case 6:
m_row_buffer[row_pos + 2] = (byte)(m_row_buffer[src + 2] - MapRed[ctl]);
m_row_buffer[row_pos + 1] = (byte)(m_row_buffer[src + 1] - GetDelta());
m_row_buffer[row_pos ] = (byte)(m_row_buffer[src ] - GetDelta());
break;
case 7:
m_row_buffer[row_pos + 2] = (byte)(m_row_buffer[src + 2] - GetDelta());
m_row_buffer[row_pos + 1] = (byte)(m_row_buffer[src + 1] - GetDelta());
m_row_buffer[row_pos ] = (byte)(m_row_buffer[src ] - GetDelta());
break;
}
row_pos += 4;
++x;
}
}
Buffer.BlockCopy (m_row_buffer, m_rows_ptr[0], m_output, dst, m_stride);
dst += m_stride;
}
}
void Unpack32bpp ()
{
for (int i = 3; i < m_row_buffer.Length; i += 4)
m_row_buffer[i] = 0xFF;
var offset_table = Img2Reader.OffsetTable.Clone() as int[];
int dst = 0;
for (int y = 0; y < m_info.iHeight; ++y)
{
int row_pos = m_rows_ptr[2];
m_rows_ptr[2] = m_rows_ptr[1];
m_rows_ptr[1] = m_rows_ptr[0];
m_rows_ptr[0] = row_pos;
for (int x = 0; x < m_info.iWidth; )
{
int ctl = m_input.GetBits (ControlTable1, 13);
if (0xEF == ctl)
ctl += m_input.GetBits (ControlTable2, 11);
int t = m_input.GetBits (ControlTable32, 13) * 2;
int pos = PosTable32[t] * 2;
int alpha = PosTable32[t+1];
int x_offset = offset_table[pos];
int y_offset = offset_table[pos + 1];
if (pos > 0)
{
offset_table[pos] = offset_table[pos-2];
offset_table[pos+1] = offset_table[pos-1];
offset_table[pos-2] = x_offset;
offset_table[pos-1] = y_offset;
}
int src = m_rows_ptr[y_offset] + (x + x_offset) * 4;
if (ctl >= 0xD8)
{
int count = ctl - 0xD6;
Binary.CopyOverlapped (m_row_buffer, src, row_pos, count * 4);
row_pos += count * 4;
x += count;
}
else
{
switch (ColorCode[ctl])
{
case 0:
m_row_buffer[row_pos + 2] = (byte)(m_row_buffer[src + 2] - MapRed[ctl]);
m_row_buffer[row_pos + 1] = (byte)(m_row_buffer[src + 1] - MapGreen[ctl]);
m_row_buffer[row_pos ] = (byte)(m_row_buffer[src ] - MapBlue[ctl]);
break;
case 1:
m_row_buffer[row_pos + 2] = (byte)(m_row_buffer[src + 2] - GetDelta());
m_row_buffer[row_pos + 1] = (byte)(m_row_buffer[src + 1] - MapGreen[ctl]);
m_row_buffer[row_pos ] = (byte)(m_row_buffer[src ] - MapBlue[ctl]);
break;
case 2:
m_row_buffer[row_pos + 2] = (byte)(m_row_buffer[src + 2] - MapRed[ctl]);
m_row_buffer[row_pos + 1] = (byte)(m_row_buffer[src + 1] - GetDelta());
m_row_buffer[row_pos ] = (byte)(m_row_buffer[src ] - MapBlue[ctl]);
break;
case 3:
m_row_buffer[row_pos + 2] = (byte)(m_row_buffer[src + 2] - GetDelta());
m_row_buffer[row_pos + 1] = (byte)(m_row_buffer[src + 1] - GetDelta());
m_row_buffer[row_pos ] = (byte)(m_row_buffer[src ] - MapBlue[ctl]);
break;
case 4:
m_row_buffer[row_pos + 2] = (byte)(m_row_buffer[src + 2] - MapRed[ctl]);
m_row_buffer[row_pos + 1] = (byte)(m_row_buffer[src + 1] - MapGreen[ctl]);
m_row_buffer[row_pos ] = (byte)(m_row_buffer[src ] - GetDelta());
break;
case 5:
m_row_buffer[row_pos + 2] = (byte)(m_row_buffer[src + 2] - GetDelta());
m_row_buffer[row_pos + 1] = (byte)(m_row_buffer[src + 1] - MapGreen[ctl]);
m_row_buffer[row_pos ] = (byte)(m_row_buffer[src ] - GetDelta());
break;
case 6:
m_row_buffer[row_pos + 2] = (byte)(m_row_buffer[src + 2] - MapRed[ctl]);
m_row_buffer[row_pos + 1] = (byte)(m_row_buffer[src + 1] - GetDelta());
m_row_buffer[row_pos ] = (byte)(m_row_buffer[src ] - GetDelta());
break;
case 7:
m_row_buffer[row_pos + 2] = (byte)(m_row_buffer[src + 2] - GetDelta());
m_row_buffer[row_pos + 1] = (byte)(m_row_buffer[src + 1] - GetDelta());
m_row_buffer[row_pos ] = (byte)(m_row_buffer[src ] - GetDelta());
break;
}
if (-3 == alpha)
{
alpha = GetDelta();
}
m_row_buffer[row_pos + 3] = (byte)(m_row_buffer[src + 3] - alpha);
row_pos += 4;
++x;
}
}
Buffer.BlockCopy (m_row_buffer, m_rows_ptr[0], m_output, dst, m_stride);
dst += m_stride;
}
}
int GetDelta ()
{
int d = m_input.GetBits (DeltaTable1, 8);
if (0x2B == d)
d += m_input.GetBits (DeltaTable2, 13);
return DeltaTable3[d];
}
static byte[] LoadResource (string name) => EmbeddedResource.Load (name, typeof(ImgReader));
#region IDisposable Members
bool _disposed = false;
public void Dispose ()
{
if (!_disposed)
{
m_input.Dispose();
_disposed = true;
}
}
#endregion
#region Bitmap Tables
static readonly Lazy<byte[]> s_control_table1 = new Lazy<byte[]> (() => LoadResource ("ImgControlTable1"));
static readonly Lazy<byte[]> s_control_table2 = new Lazy<byte[]> (() => LoadResource ("ImgControlTable2"));
static readonly Lazy<byte[]> s_control_table32 = new Lazy<byte[]> (() => LoadResource ("ImgControlTable32"));
static readonly Lazy<byte[]> s_delta_table2 = new Lazy<byte[]> (() => LoadResource ("ImgDeltaTable2"));
static byte[] ControlTable1 { get { return s_control_table1.Value; } }
static byte[] ControlTable2 { get { return s_control_table2.Value; } }
static byte[] ControlTable32 { get { return s_control_table32.Value; } }
static byte[] DeltaTable2 { get { return s_delta_table2.Value; } }
static readonly byte[] PosTable24 = {
4, 2, 1, 0, 4, 3, 1, 0, 3, 1, 1, 0, 4, 4, 1, 0, 5, 5, 1, 0, 5, 7, 1, 0, 3, 1, 1, 0, 5, 9, 1, 0, 4,
2, 1, 0, 4, 3, 1, 0, 3, 1, 1, 0, 4, 4, 1, 0, 5, 6, 1, 0, 5, 8, 1, 0, 3, 1, 1, 0, 5, 10, 1, 0,
};
static readonly sbyte[] PosTable32 = {
0, 0, 1, 0, 2, 0, 3, 0, 4, 0, 5, 0, 6, 0, 7, 0, 8, 0, 9, 0, 10, 0, 0, -3, 1, -3, 2, -3, 3, -3, 4,
-3, 5, -3, 6, -3, 7, -3, 8, -3, 9, -3, 10, -3, 0, -1, 1, -1, 2, -1, 3, -1, 4, -1, 5, -1, 6, -1, 7,
-1, 8, -1, 9, -1, 10, -1, 0, 1, 1, 1, 2, 1, 3, 1, 4, 1, 5, 1, 6, 1, 7, 1, 8, 1, 9, 1, 10, 1, 0,
-2, 1, -2, 2, -2, 3, -2, 4, -2, 5, -2, 6, -2, 7, -2, 8, -2, 9, -2, 10, -2, 0, 2, 1, 2, 2, 2, 3, 2,
4, 2, 5, 2, 6, 2, 7, 2, 8, 2, 9, 2, 10, 2,
};
static readonly byte[] ColorCode = {
7, 3, 3, 3, 3, 3, 5, 1, 1, 1, 1, 1, 5, 1, 1, 1, 1, 1, 5, 1, 1, 1, 1, 1,
5, 1, 1, 1, 1, 1, 5, 1, 1, 1, 1, 1, 6, 2, 2, 2, 2, 2, 4, 0, 0, 0, 0, 0,
4, 0, 0, 0, 0, 0, 4, 0, 0, 0, 0, 0, 4, 0, 0, 0, 0, 0, 4, 0, 0, 0, 0, 0,
6, 2, 2, 2, 2, 2, 4, 0, 0, 0, 0, 0, 4, 0, 0, 0, 0, 0, 4, 0, 0, 0, 0, 0,
4, 0, 0, 0, 0, 0, 4, 0, 0, 0, 0, 0, 6, 2, 2, 2, 2, 2, 4, 0, 0, 0, 0, 0,
4, 0, 0, 0, 0, 0, 4, 0, 0, 0, 0, 0, 4, 0, 0, 0, 0, 0, 4, 0, 0, 0, 0, 0,
6, 2, 2, 2, 2, 2, 4, 0, 0, 0, 0, 0, 4, 0, 0, 0, 0, 0, 4, 0, 0, 0, 0, 0,
4, 0, 0, 0, 0, 0, 4, 0, 0, 0, 0, 0, 6, 2, 2, 2, 2, 2, 4, 0, 0, 0, 0, 0,
4, 0, 0, 0, 0, 0, 4, 0, 0, 0, 0, 0, 4, 0, 0, 0, 0, 0, 4, 0, 0, 0, 0, 0,
};
static readonly byte[] DeltaTable1 = {
7, 0x13, 3, 0, 6, 0x0D, 4, 4, 5, 7, 3, 1, 5, 8, 4, 5, 4, 2, 3, 0, 4, 0x2B, 6, 0x10, 4, 3, 3, 1, 5,
9, 5, 0x0B, 5, 6, 3, 0, 6, 0x0F, 4, 4, 6, 0x0C, 3, 1, 8, 0x23, 4, 5, 4, 2, 3, 0, 4, 0x2B, 6, 0x11,
4, 3, 3, 1, 5, 0x0A, 8, 0x27, 7, 0x15, 3, 0, 6, 0x0E, 4, 4, 5, 7, 3, 1, 5, 8, 4, 5, 4, 2, 3, 0, 4,
0x2B, 7, 0x1B, 4, 3, 3, 1, 5, 9, 5, 0x0B, 5, 6, 3, 0, 7, 0x18, 4, 4, 8, 0x22, 3, 1, 7, 0x19, 4, 5,
4, 2, 3, 0, 4, 0x2B, 6, 0x12, 4, 3, 3, 1, 5, 0x0A, 6, 0x14, 8, 0x1D, 3, 0, 6, 0x0D, 4, 4, 5, 7, 3,
1, 5, 8, 4, 5, 4, 2, 3, 0, 4, 0x2B, 6, 0x10, 4, 3, 3, 1, 5, 9, 5, 0x0B, 5, 6, 3, 0, 6, 0x0F, 4, 4,
6, 0x0C, 3, 1, 7, 0x1A, 4, 5, 4, 2, 3, 0, 4, 0x2B, 6, 0x11, 4, 3, 3, 1, 5, 0x0A, 7, 0x1C, 8, 0x20,
3, 0, 6, 0x0E, 4, 4, 5, 7, 3, 1, 5, 8, 4, 5, 4, 2, 3, 0, 4, 0x2B, 8, 0x28, 4, 3, 3, 1, 5, 9, 5,
0x0B, 5, 6, 3, 0, 7, 0x17, 4, 4, 7, 0x16, 3, 1, 8, 0x26, 4, 5, 4, 2, 3, 0, 4, 0x2B, 6, 0x12, 4, 3,
3, 1, 5, 0x0A, 6, 0x14, 7, 0x13, 3, 0, 6, 0x0D, 4, 4, 5, 7, 3, 1, 5, 8, 4, 5, 4, 2, 3, 0, 4, 0x2B,
6, 0x10, 4, 3, 3, 1, 5, 9, 5, 0x0B, 5, 6, 3, 0, 6, 0x0F, 4, 4, 6, 0x0C, 3, 1, 8, 0x24, 4, 5, 4, 2,
3, 0, 4, 0x2B, 6, 0x11, 4, 3, 3, 1, 5, 0x0A, 8, 0x29, 7, 0x15, 3, 0, 6, 0x0E, 4, 4, 5, 7, 3, 1, 5,
8, 4, 5, 4, 2, 3, 0, 4, 0x2B, 7, 0x1B, 4, 3, 3, 1, 5, 9, 5, 0x0B, 5, 6, 3, 0, 7, 0x18, 4, 4, 8,
0x21, 3, 1, 7, 0x19, 4, 5, 4, 2, 3, 0, 4, 0x2B, 6, 0x12, 4, 3, 3, 1, 5, 0x0A, 6, 0x14, 8, 0x1E, 3,
0, 6, 0x0D, 4, 4, 5, 7, 3, 1, 5, 8, 4, 5, 4, 2, 3, 0, 4, 0x2B, 6, 0x10, 4, 3, 3, 1, 5, 9, 5, 0x0B,
5, 6, 3, 0, 6, 0x0F, 4, 4, 6, 0x0C, 3, 1, 7, 0x1A, 4, 5, 4, 2, 3, 0, 4, 0x2B, 6, 0x11, 4, 3, 3, 1,
5, 0x0A, 7, 0x1C, 8, 0x1F, 3, 0, 6, 0x0E, 4, 4, 5, 7, 3, 1, 5, 8, 4, 5, 4, 2, 3, 0, 4, 0x2B, 8,
0x2A, 4, 3, 3, 1, 5, 9, 5, 0x0B, 5, 6, 3, 0, 7, 0x17, 4, 4, 7, 0x16, 3, 1, 8, 0x25, 4, 5, 4, 2, 3,
0, 4, 0x2B, 6, 0x12, 4, 3, 3, 1, 5, 0x0A, 6, 0x14,
};
static readonly byte[] DeltaTable3 = {
0x03, 0xFD, 0x04, 0xFC, 0x05, 0xFB, 0x06, 0xFA, 0x07, 0xF9, 0x08, 0xF8, 0x09, 0xF7, 0x0A, 0xF6,
0x0B, 0xF5, 0x0C, 0xF4, 0x0D, 0xF3, 0x0E, 0xF2, 0x0F, 0xF1, 0x10, 0xF0, 0x11, 0xEF, 0x12, 0xEE,
0x13, 0xED, 0x14, 0xEC, 0x15, 0xEB, 0x16, 0xEA, 0x17, 0xE9, 0x18, 0xE8, 0x19, 0xE7, 0x1A, 0xE6,
0x1B, 0xE5, 0x1C, 0xE4, 0x1D, 0xE3, 0x1E, 0xE2, 0x1F, 0xE1, 0x20, 0xE0, 0x21, 0xDF, 0x22, 0xDE,
0x23, 0xDD, 0x24, 0xDC, 0x25, 0xDB, 0x26, 0xDA, 0x27, 0xD9, 0x28, 0xD8, 0x29, 0xD7, 0x2A, 0xD6,
0x2B, 0xD5, 0x2C, 0xD4, 0x2D, 0xD3, 0x2E, 0xD2, 0x2F, 0xD1, 0x30, 0xD0, 0x31, 0xCF, 0x32, 0xCE,
0x33, 0xCD, 0x34, 0xCC, 0x35, 0xCB, 0x36, 0xCA, 0x37, 0xC9, 0x38, 0xC8, 0x39, 0xC7, 0x3A, 0xC6,
0x3B, 0xC5, 0x3C, 0xC4, 0x3D, 0xC3, 0x3E, 0xC2, 0x3F, 0xC1, 0x40, 0xC0, 0x41, 0xBF, 0x42, 0xBE,
0x43, 0xBD, 0x44, 0xBC, 0x45, 0xBB, 0x46, 0xBA, 0x47, 0xB9, 0x48, 0xB8, 0x49, 0xB7, 0x4A, 0xB6,
0x4B, 0xB5, 0x4C, 0xB4, 0x4D, 0xB3, 0x4E, 0xB2, 0x4F, 0xB1, 0x50, 0xB0, 0x51, 0xAF, 0x52, 0xAE,
0x53, 0xAD, 0x54, 0xAC, 0x55, 0xAB, 0x56, 0xAA, 0x57, 0xA9, 0x58, 0xA8, 0x59, 0xA7, 0x5A, 0xA6,
0x5B, 0xA5, 0x5C, 0xA4, 0x5D, 0xA3, 0x5E, 0xA2, 0x5F, 0xA1, 0x60, 0xA0, 0x61, 0x9F, 0x62, 0x9E,
0x63, 0x9D, 0x64, 0x9C, 0x65, 0x9B, 0x66, 0x9A, 0x67, 0x99, 0x68, 0x98, 0x69, 0x97, 0x6A, 0x96,
0x6B, 0x95, 0x6C, 0x94, 0x6D, 0x93, 0x6E, 0x92, 0x6F, 0x91, 0x70, 0x90, 0x71, 0x8F, 0x72, 0x8E,
0x73, 0x8D, 0x74, 0x8C, 0x75, 0x8B, 0x76, 0x8A, 0x77, 0x89, 0x78, 0x88, 0x79, 0x87, 0x7A, 0x86,
0x7B, 0x85, 0x7C, 0x84, 0x7D, 0x83, 0x7E, 0x82, 0x7F, 0x81, 0x80, 0,
};
static readonly byte[] MapRed = {
0xFD, 0xFD, 0xFD, 0xFD, 0xFD, 0xFD, 0xFD, 0xFD, 0xFD, 0xFD, 0xFD, 0xFD, 0xFD, 0xFD, 0xFD, 0xFD,
0xFD, 0xFD, 0xFD, 0xFD, 0xFD, 0xFD, 0xFD, 0xFD, 0xFD, 0xFD, 0xFD, 0xFD, 0xFD, 0xFD, 0xFD, 0xFD,
0xFD, 0xFD, 0xFD, 0xFD, 0xFE, 0xFE, 0xFE, 0xFE, 0xFE, 0xFE, 0xFE, 0xFE, 0xFE, 0xFE, 0xFE, 0xFE,
0xFE, 0xFE, 0xFE, 0xFE, 0xFE, 0xFE, 0xFE, 0xFE, 0xFE, 0xFE, 0xFE, 0xFE, 0xFE, 0xFE, 0xFE, 0xFE,
0xFE, 0xFE, 0xFE, 0xFE, 0xFE, 0xFE, 0xFE, 0xFE, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF,
0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF,
0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0, 0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 1, 1, 1, 1, 1,
1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 2, 2, 2,
2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
};
static readonly byte[] MapGreen = {
0x0FD, 0x0FD, 0x0FD, 0x0FD, 0x0FD, 0x0FD, 0x0FE, 0x0FE, 0x0FE, 0x0FE, 0x0FE, 0x0FE, 0x0FF, 0x0FF,
0x0FF, 0x0FF, 0x0FF, 0x0FF, 0, 0, 0, 0, 0, 0, 1, 1, 1, 1, 1, 1, 2, 2, 2, 2, 2, 2, 0x0FD, 0x0FD,
0x0FD, 0x0FD, 0x0FD, 0x0FD, 0x0FE, 0x0FE, 0x0FE, 0x0FE, 0x0FE, 0x0FE, 0x0FF, 0x0FF, 0x0FF, 0x0FF,
0x0FF, 0x0FF, 0, 0, 0, 0, 0, 0, 1, 1, 1, 1, 1, 1, 2, 2, 2, 2, 2, 2, 0x0FD, 0x0FD, 0x0FD, 0x0FD,
0x0FD, 0x0FD, 0x0FE, 0x0FE, 0x0FE, 0x0FE, 0x0FE, 0x0FE, 0x0FF, 0x0FF, 0x0FF, 0x0FF, 0x0FF, 0x0FF,
0, 0, 0, 0, 0, 0, 1, 1, 1, 1, 1, 1, 2, 2, 2, 2, 2, 2, 0x0FD, 0x0FD, 0x0FD, 0x0FD, 0x0FD, 0x0FD,
0x0FE, 0x0FE, 0x0FE, 0x0FE, 0x0FE, 0x0FE, 0x0FF, 0x0FF, 0x0FF, 0x0FF, 0x0FF, 0x0FF, 0, 0, 0, 0, 0,
0, 1, 1, 1, 1, 1, 1, 2, 2, 2, 2, 2, 2, 0x0FD, 0x0FD, 0x0FD, 0x0FD, 0x0FD, 0x0FD, 0x0FE, 0x0FE,
0x0FE, 0x0FE, 0x0FE, 0x0FE, 0x0FF, 0x0FF, 0x0FF, 0x0FF, 0x0FF, 0x0FF, 0, 0, 0, 0, 0, 0, 1, 1, 1,
1, 1, 1, 2, 2, 2, 2, 2, 2, 0x0FD, 0x0FD, 0x0FD, 0x0FD, 0x0FD, 0x0FD, 0x0FE, 0x0FE, 0x0FE, 0x0FE,
0x0FE, 0x0FE, 0x0FF, 0x0FF, 0x0FF, 0x0FF, 0x0FF, 0x0FF, 0, 0, 0, 0, 0, 0, 1, 1, 1, 1, 1, 1, 2, 2,
2, 2, 2, 2,
};
static readonly byte[] MapBlue = {
0x0FD, 0x0FE, 0x0FF, 0, 1, 2, 0x0FD, 0x0FE, 0x0FF, 0, 1, 2,
0x0FD, 0x0FE, 0x0FF, 0, 1, 2, 0x0FD, 0x0FE, 0x0FF, 0, 1, 2,
0x0FD, 0x0FE, 0x0FF, 0, 1, 2, 0x0FD, 0x0FE, 0x0FF, 0, 1, 2,
0x0FD, 0x0FE, 0x0FF, 0, 1, 2, 0x0FD, 0x0FE, 0x0FF, 0, 1, 2,
0x0FD, 0x0FE, 0x0FF, 0, 1, 2, 0x0FD, 0x0FE, 0x0FF, 0, 1, 2,
0x0FD, 0x0FE, 0x0FF, 0, 1, 2, 0x0FD, 0x0FE, 0x0FF, 0, 1, 2,
0x0FD, 0x0FE, 0x0FF, 0, 1, 2, 0x0FD, 0x0FE, 0x0FF, 0, 1, 2,
0x0FD, 0x0FE, 0x0FF, 0, 1, 2, 0x0FD, 0x0FE, 0x0FF, 0, 1, 2,
0x0FD, 0x0FE, 0x0FF, 0, 1, 2, 0x0FD, 0x0FE, 0x0FF, 0, 1, 2,
0x0FD, 0x0FE, 0x0FF, 0, 1, 2, 0x0FD, 0x0FE, 0x0FF, 0, 1, 2,
0x0FD, 0x0FE, 0x0FF, 0, 1, 2, 0x0FD, 0x0FE, 0x0FF, 0, 1, 2,
0x0FD, 0x0FE, 0x0FF, 0, 1, 2, 0x0FD, 0x0FE, 0x0FF, 0, 1, 2,
0x0FD, 0x0FE, 0x0FF, 0, 1, 2, 0x0FD, 0x0FE, 0x0FF, 0, 1, 2,
0x0FD, 0x0FE, 0x0FF, 0, 1, 2, 0x0FD, 0x0FE, 0x0FF, 0, 1, 2,
0x0FD, 0x0FE, 0x0FF, 0, 1, 2, 0x0FD, 0x0FE, 0x0FF, 0, 1, 2,
0x0FD, 0x0FE, 0x0FF, 0, 1, 2, 0x0FD, 0x0FE, 0x0FF, 0, 1, 2,
0x0FD, 0x0FE, 0x0FF, 0, 1, 2, 0x0FD, 0x0FE, 0x0FF, 0, 1, 2,
0x0FD, 0x0FE, 0x0FF, 0, 1, 2, 0x0FD, 0x0FE, 0x0FF, 0, 1, 2,
};
#endregion
}
internal class ImgBitStream : BitStream
{
public ImgBitStream (Stream file, bool leave_open = false) : base (file, leave_open)
{
}
public int GetBits (byte[] table, int count)
{
int n = PeekBits (count) * 2;
count = table[n];
m_bits >>= count;
m_cached_bits -= count;
return table[n + 1];
}
public int PeekBits (int count)
{
if (m_cached_bits < count)
{
int b = m_input.ReadByte();
if (-1 == b)
b = 0; // throw new EndOfStreamException();
m_bits |= ByteMap[b] << m_cached_bits;
m_cached_bits += 8;
if (m_cached_bits < count)
{
b = m_input.ReadByte();
if (-1 == b)
b = 0; // throw new EndOfStreamException();
m_bits |= ByteMap[b] << m_cached_bits;
m_cached_bits += 8;
}
}
return m_bits & g_bitMask[count];
}
static readonly int[] g_bitMask = {
0x00000000, 0x00000001, 0x00000003, 0x00000007, 0x0000000F, 0x0000001F, 0x0000003F, 0x0000007F,
0x000000FF, 0x000001FF, 0x000003FF, 0x000007FF, 0x00000FFF, 0x00001FFF, 0x00003FFF, 0x00007FFF,
0x0000FFFF, 0x0001FFFF, 0x0003FFFF, 0x0007FFFF, 0x000FFFFF, 0x001FFFFF, 0x003FFFFF, 0x007FFFFF,
0x00FFFFFF, 0x01FFFFFF, 0x03FFFFFF, 0x07FFFFFF, 0x0FFFFFFF, 0x1FFFFFFF, 0x3FFFFFFF, 0x7FFFFFFF,
};
internal static readonly byte[] ByteMap = {
0x00, 0x80, 0x40, 0xC0, 0x20, 0xA0, 0x60, 0xE0, 0x10, 0x90, 0x50, 0xD0, 0x30, 0xB0, 0x70, 0xF0,
0x08, 0x88, 0x48, 0xC8, 0x28, 0xA8, 0x68, 0xE8, 0x18, 0x98, 0x58, 0xD8, 0x38, 0xB8, 0x78, 0xF8,
0x04, 0x84, 0x44, 0xC4, 0x24, 0xA4, 0x64, 0xE4, 0x14, 0x94, 0x54, 0xD4, 0x34, 0xB4, 0x74, 0xF4,
0x0C, 0x8C, 0x4C, 0xCC, 0x2C, 0xAC, 0x6C, 0xEC, 0x1C, 0x9C, 0x5C, 0xDC, 0x3C, 0xBC, 0x7C, 0xFC,
0x02, 0x82, 0x42, 0xC2, 0x22, 0xA2, 0x62, 0xE2, 0x12, 0x92, 0x52, 0xD2, 0x32, 0xB2, 0x72, 0xF2,
0x0A, 0x8A, 0x4A, 0xCA, 0x2A, 0xAA, 0x6A, 0xEA, 0x1A, 0x9A, 0x5A, 0xDA, 0x3A, 0xBA, 0x7A, 0xFA,
0x06, 0x86, 0x46, 0xC6, 0x26, 0xA6, 0x66, 0xE6, 0x16, 0x96, 0x56, 0xD6, 0x36, 0xB6, 0x76, 0xF6,
0x0E, 0x8E, 0x4E, 0xCE, 0x2E, 0xAE, 0x6E, 0xEE, 0x1E, 0x9E, 0x5E, 0xDE, 0x3E, 0xBE, 0x7E, 0xFE,
0x01, 0x81, 0x41, 0xC1, 0x21, 0xA1, 0x61, 0xE1, 0x11, 0x91, 0x51, 0xD1, 0x31, 0xB1, 0x71, 0xF1,
0x09, 0x89, 0x49, 0xC9, 0x29, 0xA9, 0x69, 0xE9, 0x19, 0x99, 0x59, 0xD9, 0x39, 0xB9, 0x79, 0xF9,
0x05, 0x85, 0x45, 0xC5, 0x25, 0xA5, 0x65, 0xE5, 0x15, 0x95, 0x55, 0xD5, 0x35, 0xB5, 0x75, 0xF5,
0x0D, 0x8D, 0x4D, 0xCD, 0x2D, 0xAD, 0x6D, 0xED, 0x1D, 0x9D, 0x5D, 0xDD, 0x3D, 0xBD, 0x7D, 0xFD,
0x03, 0x83, 0x43, 0xC3, 0x23, 0xA3, 0x63, 0xE3, 0x13, 0x93, 0x53, 0xD3, 0x33, 0xB3, 0x73, 0xF3,
0x0B, 0x8B, 0x4B, 0xCB, 0x2B, 0xAB, 0x6B, 0xEB, 0x1B, 0x9B, 0x5B, 0xDB, 0x3B, 0xBB, 0x7B, 0xFB,
0x07, 0x87, 0x47, 0xC7, 0x27, 0xA7, 0x67, 0xE7, 0x17, 0x97, 0x57, 0xD7, 0x37, 0xB7, 0x77, 0xF7,
0x0F, 0x8F, 0x4F, 0xCF, 0x2F, 0xAF, 0x6F, 0xEF, 0x1F, 0x9F, 0x5F, 0xDF, 0x3F, 0xBF, 0x7F, 0xFF,
};
}
}
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