mirror of
https://github.com/crskycode/GARbro.git
synced 2024-10-22 23:28:16 +08:00
319 lines
11 KiB
C#
319 lines
11 KiB
C#
//! \file ImageMIA.cs
|
|
//! \date 2023 Oct 21
|
|
//! \brief Miamisoft 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 GameRes.Utility;
|
|
using System;
|
|
using System.ComponentModel.Composition;
|
|
using System.IO;
|
|
using System.Windows.Media;
|
|
using System.Windows.Media.Imaging;
|
|
|
|
// [950630][Miamisoft] Kotohigaoka Monogatari
|
|
|
|
namespace GameRes.Formats.Miami
|
|
{
|
|
[Export(typeof(ImageFormat))]
|
|
public class MiaFormat : ImageFormat
|
|
{
|
|
public override string Tag => "MIA";
|
|
public override string Description => "Miamisoft image format";
|
|
public override uint Signature => 0;
|
|
|
|
public MiaFormat ()
|
|
{
|
|
Signatures = new[] { 0x40u, 0u };
|
|
}
|
|
|
|
public override ImageMetaData ReadMetaData (IBinaryStream file)
|
|
{
|
|
var header = file.ReadHeader (0x10);
|
|
if (!header.AsciiEqual (0xA, "CoB42"))
|
|
return null;
|
|
return new ImageMetaData {
|
|
Width = header.ToUInt16 (6),
|
|
Height = header.ToUInt16 (8),
|
|
BPP = 4,
|
|
};
|
|
}
|
|
|
|
public override ImageData Read (IBinaryStream file, ImageMetaData info)
|
|
{
|
|
var reader = new MiaReader (file, info);
|
|
return reader.Unpack();
|
|
}
|
|
|
|
public override void Write (Stream file, ImageData image)
|
|
{
|
|
throw new System.NotImplementedException ("MiaFormat.Write not implemented");
|
|
}
|
|
}
|
|
|
|
internal class MiaReader
|
|
{
|
|
IBinaryStream m_input;
|
|
ImageMetaData m_info;
|
|
|
|
public MiaReader (IBinaryStream input, ImageMetaData info)
|
|
{
|
|
m_input = input;
|
|
m_info = info;
|
|
}
|
|
|
|
byte[] m_buffer;
|
|
int m_buf_dst;
|
|
byte[] m_order;
|
|
|
|
byte[] m_output;
|
|
int m_output_dst;
|
|
int m_output_stride;
|
|
|
|
public ImageData Unpack ()
|
|
{
|
|
m_input.Position = 0x10;
|
|
var palette = ReadPalette (m_input);
|
|
try
|
|
{
|
|
UnpackInternal();
|
|
}
|
|
catch (EndOfStreamException)
|
|
{
|
|
FlushBuffer();
|
|
}
|
|
return ImageData.Create (m_info, PixelFormats.Indexed4, palette, m_output, m_output_stride);
|
|
}
|
|
|
|
void UnpackInternal () // 1374:7A54
|
|
{
|
|
m_output_stride = m_info.iWidth >> 1;
|
|
m_output = new byte[m_output_stride * m_info.iHeight];
|
|
int buffer_size = m_info.iHeight * 0x10;
|
|
m_buffer = new byte[buffer_size];
|
|
SetupPattern();
|
|
m_order = m_input.ReadBytes (6);
|
|
byte prev_pixel = 0x10;
|
|
m_buf_dst = 0;
|
|
m_output_dst = 0;
|
|
while (m_output_dst < m_output_stride)
|
|
{
|
|
int ctl = GetInt() - 1;
|
|
if (ctl < 0) // @1@
|
|
{
|
|
m_buffer[m_buf_dst ] = 0;
|
|
m_buffer[m_buf_dst+1] = 0;
|
|
m_buffer[m_buf_dst+2] = 0;
|
|
m_buffer[m_buf_dst+3] = 0;
|
|
for (int i = 0; i < 4; ++i)
|
|
{
|
|
int count = GetInt();
|
|
int dst = count + (prev_pixel << 4);
|
|
byte al = m_pattern[dst];
|
|
int src = dst - 1;
|
|
while (count --> 0)
|
|
m_pattern[dst--] = m_pattern[src--];
|
|
m_pattern[dst] = al;
|
|
prev_pixel = al;
|
|
for (int j = 0; j < 4; ++j)
|
|
{
|
|
m_buffer[m_buf_dst+j] <<= 1;
|
|
m_buffer[m_buf_dst+j] |= (byte)(al & 1);
|
|
al >>= 1;
|
|
}
|
|
}
|
|
ushort ax = LittleEndian.ToUInt16 (m_buffer, m_buf_dst);
|
|
ax <<= 4;
|
|
LittleEndian.Pack (ax, m_buffer, m_buf_dst+4);
|
|
ax = LittleEndian.ToUInt16 (m_buffer, m_buf_dst+2);
|
|
ax <<= 4;
|
|
LittleEndian.Pack (ax, m_buffer, m_buf_dst+6);
|
|
m_buf_dst += 8;
|
|
}
|
|
else if (ctl < 5) // @2@
|
|
{
|
|
int count = 1 + GetInt();
|
|
switch (m_order[ctl])
|
|
{
|
|
case 1: CopyOp01 (count, 8); break;
|
|
case 2: CopyOp01 (count, 0x10); break;
|
|
case 3: CopyOp01 (count, 0x20); break;
|
|
case 4: CopyOp01 (count, m_info.iHeight << 3); break;
|
|
case 5: CopyOp05 (count); break;
|
|
default: throw new InvalidFormatException();
|
|
}
|
|
}
|
|
else // ctl >= 5
|
|
{
|
|
throw new InvalidFormatException();
|
|
}
|
|
if (buffer_size == m_buf_dst)
|
|
FlushBuffer();
|
|
}
|
|
}
|
|
|
|
int GetInt ()
|
|
{
|
|
int count = 0;
|
|
while (GetNextBit() == 0)
|
|
++count;
|
|
return count;
|
|
}
|
|
|
|
void CopyOp01 (int count, int offset)
|
|
{
|
|
int bx = count;
|
|
while (count > 0)
|
|
{
|
|
int dst = m_buf_dst;
|
|
if (dst < offset)
|
|
{
|
|
int src = dst;
|
|
dst = -(dst - offset) >> 3;
|
|
if (count > dst)
|
|
count = dst;
|
|
src += m_info.iHeight << 4;
|
|
src -= offset;
|
|
bx -= count;
|
|
count <<= 3;
|
|
Binary.CopyOverlapped (m_buffer, src, m_buf_dst, count);
|
|
m_buf_dst += count;
|
|
count = bx;
|
|
if (0 == count)
|
|
break;
|
|
}
|
|
int remaining = m_buffer.Length - m_buf_dst;
|
|
remaining >>= 3;
|
|
if (count > remaining)
|
|
count = remaining;
|
|
bx -= count;
|
|
count <<= 3;
|
|
Binary.CopyOverlapped (m_buffer, m_buf_dst - offset, m_buf_dst, count);
|
|
m_buf_dst += count;
|
|
count = bx;
|
|
if (m_buffer.Length == m_buf_dst)
|
|
FlushBuffer();
|
|
}
|
|
}
|
|
|
|
void CopyOp05 (int count)
|
|
{
|
|
int src = m_buf_dst - 8;
|
|
if (src < 0)
|
|
src = m_buffer.Length - 8;
|
|
|
|
ushort ax = LittleEndian.ToUInt16 (m_buffer, src);
|
|
ax = (ushort)((ax << 1) & 0x0A0A | (ax >> 1) & 0x0505);
|
|
LittleEndian.Pack (ax, m_buffer, m_buf_dst);
|
|
ax <<= 4;
|
|
LittleEndian.Pack (ax, m_buffer, m_buf_dst+4);
|
|
|
|
ax = LittleEndian.ToUInt16 (m_buffer, src+2);
|
|
ax = (ushort)((ax << 1) & 0x0A0A | (ax >> 1) & 0x0505);
|
|
LittleEndian.Pack (ax, m_buffer, m_buf_dst+2);
|
|
ax <<= 4;
|
|
LittleEndian.Pack (ax, m_buffer, m_buf_dst+6);
|
|
|
|
m_buf_dst += 8;
|
|
if (m_buf_dst == m_buffer.Length)
|
|
FlushBuffer();
|
|
if (--count != 0)
|
|
CopyOp01 (count, 0x10);
|
|
}
|
|
|
|
void FlushBuffer ()
|
|
{
|
|
int height = m_info.iHeight;
|
|
int hi = height << 3;
|
|
int src = 0;
|
|
int dst = m_output_dst;
|
|
for (int y = 0; y < height; ++y)
|
|
{
|
|
int b0 = m_buffer[src+4] | m_buffer[src+hi ];
|
|
int b1 = m_buffer[src+5] | m_buffer[src+hi+1];
|
|
int b2 = m_buffer[src+6] | m_buffer[src+hi+2];
|
|
int b3 = m_buffer[src+7] | m_buffer[src+hi+3];
|
|
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+(j>>1)] = px;
|
|
}
|
|
src += 8;
|
|
dst += m_output_stride;
|
|
}
|
|
m_output_dst += 4;
|
|
m_buf_dst = 0;
|
|
}
|
|
|
|
byte[] m_pattern = new byte[0x110];
|
|
|
|
void SetupPattern ()
|
|
{
|
|
int dst = 0;
|
|
byte h = 0;
|
|
for (int i = 0; i < 0x11; ++i)
|
|
{
|
|
byte l = h;
|
|
for (int j = 0; j < 0x10; ++j)
|
|
m_pattern[dst++] = (byte)(l++ & 0xF);
|
|
h++;
|
|
}
|
|
}
|
|
|
|
int m_bit_count = 0;
|
|
int m_bits;
|
|
|
|
byte GetNextBit ()
|
|
{
|
|
if (--m_bit_count <= 0)
|
|
{
|
|
m_bits = m_input.ReadUInt8();
|
|
m_bit_count = 8;
|
|
}
|
|
int bit = m_bits & 1;
|
|
m_bits >>= 1;
|
|
return (byte)bit;
|
|
}
|
|
|
|
BitmapPalette ReadPalette (IBinaryStream input)
|
|
{
|
|
const int count = 16;
|
|
var colors = new Color[count];
|
|
for (int i = 0; i < count; ++i)
|
|
{
|
|
byte g = m_input.ReadUInt8();
|
|
byte r = m_input.ReadUInt8();
|
|
byte b = m_input.ReadUInt8();
|
|
colors[i] = Color.FromRgb ((byte)(r * 0x11), (byte)(g * 0x11), (byte)(b * 0x11));
|
|
}
|
|
return new BitmapPalette (colors);
|
|
}
|
|
}
|
|
}
|