mirror of
https://github.com/crskycode/GARbro.git
synced 2024-12-25 04:14:13 +08:00
333 lines
11 KiB
C#
333 lines
11 KiB
C#
|
//! \file ImageMAI3.cs
|
||
|
|
//! \date 2023 Oct 23
|
||
|
|
//! \brief Izumi engine image format (PC-98).
|
||
|
|
//
|
||
|
|
// 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 System;
|
||
|
|
using System.ComponentModel.Composition;
|
||
|
|
using System.IO;
|
||
|
|
using System.Windows.Media;
|
||
|
|
using System.Windows.Media.Imaging;
|
||
|
|
|
||
|
|
namespace GameRes.Formats.Izumi
|
||
|
|
{
|
||
|
|
internal class Mai3MetaData : ImageMetaData
|
||
|
|
{
|
||
|
|
public int DataOffset;
|
||
|
|
public bool HasPalette;
|
||
|
|
}
|
||
|
|
|
||
|
|
[Export(typeof(ImageFormat))]
|
||
|
|
public class Mai3Format : ImageFormat
|
||
|
|
{
|
||
|
|
public override string Tag => "MI3";
|
||
|
|
public override string Description => "Izumi engine image format";
|
||
|
|
public override uint Signature => 0x3049414D; // 'MAI03'
|
||
|
|
|
||
|
|
public override ImageMetaData ReadMetaData (IBinaryStream file)
|
||
|
|
{
|
||
|
|
var header = file.ReadHeader (14);
|
||
|
|
if (!header.AsciiEqual ("MAI03\x1A"))
|
||
|
|
return null;
|
||
|
|
return new Mai3MetaData {
|
||
|
|
Width = (uint)(header.ToUInt16 (8) << 3),
|
||
|
|
Height = header.ToUInt16 (0xA),
|
||
|
|
BPP = 4,
|
||
|
|
DataOffset = header.ToUInt16 (0xC) & 0x7FFF,
|
||
|
|
HasPalette = (header[0xD] & 0x80) != 0,
|
||
|
|
};
|
||
|
|
}
|
||
|
|
|
||
|
|
public override ImageData Read (IBinaryStream file, ImageMetaData info)
|
||
|
|
{
|
||
|
|
var reader = new Mai3Reader (file, (Mai3MetaData)info);
|
||
|
|
return reader.Unpack();
|
||
|
|
}
|
||
|
|
|
||
|
|
public override void Write (Stream file, ImageData image)
|
||
|
|
{
|
||
|
|
throw new System.NotImplementedException ("Mai3Format.Write not implemented");
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
internal class Mai3Reader
|
||
|
|
{
|
||
|
|
IBinaryStream m_input;
|
||
|
|
Mai3MetaData m_info;
|
||
|
|
|
||
|
|
public Mai3Reader (IBinaryStream input, Mai3MetaData info)
|
||
|
|
{
|
||
|
|
m_input = input;
|
||
|
|
m_info = info;
|
||
|
|
}
|
||
|
|
|
||
|
|
ushort[] m_buffer;
|
||
|
|
int m_output_stride;
|
||
|
|
byte[] m_output;
|
||
|
|
|
||
|
|
public ImageData Unpack ()
|
||
|
|
{
|
||
|
|
m_input.Position = m_info.DataOffset;
|
||
|
|
BitmapPalette palette = null;
|
||
|
|
if (m_info.HasPalette)
|
||
|
|
palette = ReadPalette();
|
||
|
|
else
|
||
|
|
palette = BitmapPalettes.Gray16;
|
||
|
|
m_buffer = new ushort[0x6D0];
|
||
|
|
m_output_stride = m_info.iWidth >> 1;
|
||
|
|
m_output = new byte[m_output_stride * m_info.iHeight];
|
||
|
|
InitPixels();
|
||
|
|
InitBitReader();
|
||
|
|
int output_dst = 0;
|
||
|
|
int stride = m_info.iWidth >> 3;
|
||
|
|
int x = stride >> 1;
|
||
|
|
while (x --> 0)
|
||
|
|
{
|
||
|
|
MoveBuffer();
|
||
|
|
UnpackLine (0x1C0);
|
||
|
|
UnpackLine (0x10);
|
||
|
|
MoveBuffer();
|
||
|
|
UnpackLine (0x1C0);
|
||
|
|
UnpackLine (0x10);
|
||
|
|
CopyOutput (output_dst);
|
||
|
|
output_dst += 8;
|
||
|
|
}
|
||
|
|
if ((stride & 1) != 0)
|
||
|
|
{
|
||
|
|
MoveBuffer();
|
||
|
|
UnpackLine (0x1C0);
|
||
|
|
UnpackLine (0x10);
|
||
|
|
CopyOutput (output_dst, 1);
|
||
|
|
}
|
||
|
|
return ImageData.Create (m_info, PixelFormats.Indexed4, palette, m_output, m_output_stride);
|
||
|
|
}
|
||
|
|
|
||
|
|
void UnpackLine (int dst)
|
||
|
|
{
|
||
|
|
int height = m_info.iHeight;
|
||
|
|
while (height > 0)
|
||
|
|
{
|
||
|
|
if (GetNextBit() == 0)
|
||
|
|
{
|
||
|
|
int offset;
|
||
|
|
if (GetNextBit() != 0)
|
||
|
|
offset = 0;
|
||
|
|
else if (GetNextBit() != 0)
|
||
|
|
offset = 0x1B0;
|
||
|
|
else
|
||
|
|
offset = 0x360;
|
||
|
|
if (0 == offset || GetNextBit() != 0)
|
||
|
|
{
|
||
|
|
if (GetNextBit() != 0)
|
||
|
|
offset = -1;
|
||
|
|
else if (GetNextBit() != 0)
|
||
|
|
offset -= 2;
|
||
|
|
else if (GetNextBit() != 0)
|
||
|
|
offset -= 4;
|
||
|
|
else if (GetNextBit() != 0)
|
||
|
|
offset -= 8;
|
||
|
|
else
|
||
|
|
offset -= 0x10;
|
||
|
|
}
|
||
|
|
else if (GetNextBit() == 0)
|
||
|
|
{
|
||
|
|
if (GetNextBit() != 0)
|
||
|
|
offset += 2;
|
||
|
|
else if (GetNextBit() != 0)
|
||
|
|
offset += 4;
|
||
|
|
else if (GetNextBit() != 0)
|
||
|
|
offset += 8;
|
||
|
|
else
|
||
|
|
offset += 0x10;
|
||
|
|
}
|
||
|
|
int length = GetCount (8);
|
||
|
|
int count = 1;
|
||
|
|
for (int j = 0; j < length; ++j)
|
||
|
|
count = count << 1 | GetNextBit();
|
||
|
|
count += 1;
|
||
|
|
int src = dst + offset;
|
||
|
|
height -= count;
|
||
|
|
while (count --> 0)
|
||
|
|
m_buffer[dst++] = m_buffer[src++];
|
||
|
|
}
|
||
|
|
else
|
||
|
|
{
|
||
|
|
ushort px = m_buffer[dst + 0x1B0];
|
||
|
|
int prev = (px >> 8) & 1;
|
||
|
|
prev <<= 1;
|
||
|
|
prev |= (px >> 12) & 1;
|
||
|
|
prev <<= 1;
|
||
|
|
prev |= px & 1;
|
||
|
|
prev <<= 1;
|
||
|
|
prev |= (px >> 4) & 1;
|
||
|
|
|
||
|
|
byte n0 = GetPixel ((byte)prev);
|
||
|
|
byte n1 = GetPixel (n0);
|
||
|
|
byte n2 = GetPixel (n1);
|
||
|
|
byte n3 = GetPixel (n2);
|
||
|
|
|
||
|
|
px = m_patterns[0,n3];
|
||
|
|
px |= m_patterns[1,n2];
|
||
|
|
px |= m_patterns[2,n1];
|
||
|
|
px |= m_patterns[3,n0];
|
||
|
|
|
||
|
|
m_buffer[dst++] = px;
|
||
|
|
--height;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
static readonly ushort[,] m_patterns = {
|
||
|
|
{ 0, 0x10, 1, 0x11, 0x1000, 0x1010, 0x1001, 0x1011, 0x100, 0x110, 0x101, 0x111, 0x1100, 0x1110, 0x1101, 0x1111 },
|
||
|
|
{ 0, 0x20, 2, 0x22, 0x2000, 0x2020, 0x2002, 0x2022, 0x200, 0x220, 0x202, 0x222, 0x2200, 0x2220, 0x2202, 0x2222 },
|
||
|
|
{ 0, 0x40, 4, 0x44, 0x4000, 0x4040, 0x4004, 0x4044, 0x400, 0x440, 0x404, 0x444, 0x4400, 0x4440, 0x4404, 0x4444 },
|
||
|
|
{ 0, 0x80, 8, 0x88, 0x8000, 0x8080, 0x8008, 0x8088, 0x800, 0x880, 0x808, 0x888, 0x8800, 0x8880, 0x8808, 0x8888 },
|
||
|
|
};
|
||
|
|
|
||
|
|
byte GetPixel (byte prev)
|
||
|
|
{
|
||
|
|
int count = GetCount (15);
|
||
|
|
prev <<= 4;
|
||
|
|
prev += 0xF;
|
||
|
|
int src = prev - count;
|
||
|
|
int dst = src;
|
||
|
|
byte al = m_pixels[src++];
|
||
|
|
if (count > 0)
|
||
|
|
{
|
||
|
|
while (count --> 0)
|
||
|
|
m_pixels[dst++] = m_pixels[src++];
|
||
|
|
m_pixels[dst] = al;
|
||
|
|
}
|
||
|
|
return al;
|
||
|
|
}
|
||
|
|
|
||
|
|
int GetCount (int limit)
|
||
|
|
{
|
||
|
|
int count = 0;
|
||
|
|
while (count < limit && GetNextBit() == 0)
|
||
|
|
++count;
|
||
|
|
return count;
|
||
|
|
}
|
||
|
|
|
||
|
|
void MoveBuffer ()
|
||
|
|
{
|
||
|
|
Buffer.BlockCopy (m_buffer, 0x20, m_buffer, 0x6E0, 0x360 << 1);
|
||
|
|
}
|
||
|
|
|
||
|
|
void CopyOutput (int dst_line, int rows = 2)
|
||
|
|
{
|
||
|
|
int src = 0x10;
|
||
|
|
int height = m_info.iHeight;
|
||
|
|
for (int y = 0; y < height; ++y)
|
||
|
|
{
|
||
|
|
ushort cx = m_buffer[src + 0x510];
|
||
|
|
ushort dx = m_buffer[src + 0x360];
|
||
|
|
ushort bx = m_buffer[src + 0x1B0];
|
||
|
|
ushort ax = m_buffer[src++];
|
||
|
|
|
||
|
|
int b0 = bx << 8 & 0xF000 | ax << 4 & 0x0F00 | cx & 0x00F0 | dx >> 4 & 0xF;
|
||
|
|
int b1 = bx << 12 & 0xF000 | ax << 8 & 0x0F00 | cx << 4 & 0x00F0 | dx & 0xF;
|
||
|
|
int b2 = bx & 0xF000 | ax >> 4 & 0x0F00 | cx >> 8 & 0x00F0 | dx >> 12;
|
||
|
|
int b3 = bx << 4 & 0xF000 | ax & 0x0F00 | cx >> 4 & 0x00F0 | dx >> 8 & 0xF;
|
||
|
|
|
||
|
|
int dst = dst_line;
|
||
|
|
for (int i = 0; i < rows; ++i)
|
||
|
|
{
|
||
|
|
for (int j = 0; j < 8; j += 2)
|
||
|
|
{
|
||
|
|
byte px = (byte)((((b0 << j) & 0x80) >> 3)
|
||
|
|
| (((b1 << j) & 0x80) >> 2)
|
||
|
|
| (((b2 << j) & 0x80) >> 1)
|
||
|
|
| (((b3 << j) & 0x80) ));
|
||
|
|
px |= (byte)((((b0 << j) & 0x40) >> 6)
|
||
|
|
| (((b1 << j) & 0x40) >> 5)
|
||
|
|
| (((b2 << j) & 0x40) >> 4)
|
||
|
|
| (((b3 << j) & 0x40) >> 3));
|
||
|
|
m_output[dst++] = px;
|
||
|
|
}
|
||
|
|
b0 >>= 8;
|
||
|
|
b1 >>= 8;
|
||
|
|
b2 >>= 8;
|
||
|
|
b3 >>= 8;
|
||
|
|
}
|
||
|
|
dst_line += m_output_stride;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
byte[] m_pixels = new byte[0x100];
|
||
|
|
|
||
|
|
void InitPixels ()
|
||
|
|
{
|
||
|
|
int dst = m_pixels.Length - 1;
|
||
|
|
for (int i = 0x0F; i >= 0; --i)
|
||
|
|
{
|
||
|
|
byte n = (byte)i;
|
||
|
|
for (int j = 0; j < 0x10; ++j)
|
||
|
|
{
|
||
|
|
m_pixels[dst--] = (byte)(n-- & 0xF);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
int m_bits;
|
||
|
|
int m_bit_count;
|
||
|
|
|
||
|
|
void InitBitReader ()
|
||
|
|
{
|
||
|
|
m_bits = m_input.ReadUInt16();
|
||
|
|
m_bit_count = 16;
|
||
|
|
}
|
||
|
|
|
||
|
|
byte GetNextBit ()
|
||
|
|
{
|
||
|
|
int bit = m_bits & 1;
|
||
|
|
m_bits >>= 1;
|
||
|
|
if (--m_bit_count <= 0)
|
||
|
|
{
|
||
|
|
if (m_input.PeekByte() != -1)
|
||
|
|
m_bits = m_input.ReadUInt16();
|
||
|
|
else
|
||
|
|
m_bits = 0;
|
||
|
|
m_bit_count = 16;
|
||
|
|
}
|
||
|
|
return (byte)bit;
|
||
|
|
}
|
||
|
|
|
||
|
|
BitmapPalette ReadPalette ()
|
||
|
|
{
|
||
|
|
using (var bits = new MsbBitStream (m_input.AsStream, true))
|
||
|
|
{
|
||
|
|
var colors = new Color[16];
|
||
|
|
for (int i = 0; i < 16; ++i)
|
||
|
|
{
|
||
|
|
int r = bits.GetBits (4) * 0x11;
|
||
|
|
int g = bits.GetBits (4) * 0x11;
|
||
|
|
int b = bits.GetBits (4) * 0x11;
|
||
|
|
colors[i] = Color.FromRgb ((byte)r, (byte)g, (byte)b);
|
||
|
|
}
|
||
|
|
return new BitmapPalette (colors);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|