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implemented GHP2 images.

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This commit is contained in:
morkt 2018-11-23 06:01:04 +04:00
parent 513519522c
commit c51c6e560b
1 changed files with 193 additions and 19 deletions
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212
ArcFormats/Succubus/ImageGH.cs
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@ -2,7 +2,7 @@
//! \date 2017 Dec 26
//! \brief Succubus image format.
//
// Copyright (C) 2017 by morkt
// Copyright (C) 2017-2018 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
@ -23,16 +23,23 @@
// IN THE SOFTWARE.
//
using System;
using System.ComponentModel.Composition;
using System.IO;
using System.Windows.Media;
using System.Windows.Media.Imaging;
// [000310][Succubus] Utagoe 2 ~Dance Mix~
namespace GameRes.Formats.Succubus
{
internal class GhpMetaData : ImageMetaData
{
public int Version;
public int Colors;
public uint PaletteOffset;
public uint DataOffset;
public int ChunkCount;
}
[Export(typeof(ImageFormat))]
@ -40,26 +47,42 @@ namespace GameRes.Formats.Succubus
{
public override string Tag { get { return "GH"; } }
public override string Description { get { return "Succubus image format"; } }
public override uint Signature { get { return 0x33504847; } } // 'GHP3'
public override uint Signature { get { return 0x33504847; } }
public GhFormat ()
{
Signatures = new uint[] { 0x33504847, 0x32504847 }; // 'GHP3', 'GHP2'
}
public override ImageMetaData ReadMetaData (IBinaryStream file)
{
var header = file.ReadHeader (0x28);
return new GhpMetaData {
int version = header[3] - '0';
var info = new GhpMetaData {
Width = header.ToUInt16 (0xC),
Height = header.ToUInt16 (0xE),
BPP = 8,
Colors = header.ToUInt16 (0x10),
PaletteOffset = header.ToUInt32 (0x18),
DataOffset = header.ToUInt32 (0x24),
Version = version,
};
if (2 == version)
{
info.PaletteOffset = header.ToUInt32 (0x14);
info.ChunkCount = header.ToInt32 (0x18);
info.DataOffset = header.ToUInt32 (0x1C);
}
else
{
info.PaletteOffset = header.ToUInt32 (0x18);
info.DataOffset = header.ToUInt32 (0x24);
}
return info;
}
public override ImageData Read (IBinaryStream file, ImageMetaData info)
{
var reader = new Ghp3Reader (file, (GhpMetaData)info);
reader.Unpack();
return ImageData.Create (info, reader.Format, reader.Palette, reader.Data, reader.Stride);
var reader = new GhpReader (file, (GhpMetaData)info);
return reader.Unpack();
}
public override void Write (Stream file, ImageData image)
@ -68,38 +91,189 @@ namespace GameRes.Formats.Succubus
}
}
internal class Ghp3Reader
internal class GhpReader
{
IBinaryStream m_input;
GhpMetaData m_info;
byte[] m_output;
int m_stride;
int m_depth;
public PixelFormat Format { get { return PixelFormats.Indexed8; } }
public BitmapPalette Palette { get; private set; }
public int Stride { get { return m_stride; } }
public byte[] Data { get { return m_output; } }
public Ghp3Reader (IBinaryStream input, GhpMetaData info)
public GhpReader (IBinaryStream input, GhpMetaData info)
{
m_input = input;
m_info = info;
m_stride = ((int)info.Width + 3) & ~3;
m_depth = GetColorDepth (m_info.Colors);
m_output = new byte[m_stride * (int)m_info.Height];
}
public void Unpack ()
public ImageData Unpack ()
{
m_input.Position = m_info.PaletteOffset;
Palette = ImageFormat.ReadPalette (m_input.AsStream, m_info.Colors, PaletteFormat.Bgr);
var palette = ImageFormat.ReadPalette (m_input.AsStream, m_info.Colors, PaletteFormat.Rgb);
m_input.Position = m_info.DataOffset;
if (2 == m_info.Version)
Unpack2();
else
Unpack3();
return ImageData.Create (m_info, PixelFormats.Indexed8, palette, m_output, m_stride);
}
void Unpack2 ()
{
int width = (int)m_info.Width;
var repeat_table = new uint[(width * (int)m_info.Height + 31) / 32];
int count = 0;
int skip = 5;
int x = 0, y = 0;
int next_x = 0, next_y = 0;
ReadPos();
int pix = ReadBits (m_depth);
for (int i = 0; i < m_info.ChunkCount; )
{
if (count <= 0)
{
int ctl = ReadBits (2);
if (ctl > 2)
count = ReadCount() - 1;
else
skip = ReadBits (1) + 2 * ctl;
}
else
{
--count;
}
m_output[m_stride * y + x] = (byte)pix;
int rpos = width * y + x;
repeat_table[rpos >> 5] |= 1u << (rpos & 0x1F);
if (skip >= 5)
{
int pos = ReadPos() + next_x;
next_y += Math.DivRem (pos, width, out next_x);
pix = ReadBits (m_depth);
y = next_y;
x = next_x;
++i;
}
else
{
++y;
x += skip - 2;
}
}
pix = 0;
int src = 0;
uint bitmap = 0;
for (y = 0; y < (int)m_info.Height; ++y)
for (x = 0; x < width; ++x)
{
if ((src & 0x1F) == 0)
bitmap = repeat_table[src >> 5];
if ((bitmap & 1) != 0)
pix = m_output[m_stride * y + x];
else
m_output[m_stride * y + x] = (byte)pix;
bitmap >>= 1;
++src;
}
}
void Unpack3 ()
{
int image_size = (m_stride * (int)m_info.Height + 0x1F) & ~0x1F;
int table_size = image_size >> 3;
var rows_table = new int[m_info.Height];
for (uint i = 0; i < info.Height; ++i)
for (uint i = 0; i < m_info.Height; ++i)
{
int line_pos = i * m_stride;
int line_pos = (int)i * m_stride;
uint y = m_info.Height - i;
rows_table[y - 1] = line_pos;
}
throw new NotImplementedException();
}
internal static int GetColorDepth (int colors)
{
int depth = 0;
for (int bit = 1; bit < colors && depth < 24; bit <<= 1)
{
++depth;
}
return depth;
}
int ReadPos ()
{
int pos = ReadBitCount();
if (pos > 0)
return BitTable[2 * pos + 3] + ReadBits (BitTable[2 * pos + 2]) + 1;
else
return ReadBits (2) + 1;
}
int ReadCount ()
{
int count = 0;
int x = ReadBitCount();
if (x > 0)
count = BitTable[2 * x + 1] + ReadBits (BitTable[2 * x]) + 1;
return count + 2;
}
uint m_bits = 0;
int m_cached_bits = 0;
int ReadBits (int count)
{
uint bits = 0;
if (count > m_cached_bits)
{
if (m_cached_bits > 0)
{
count -= m_cached_bits;
bits = m_bits >> (32 - m_cached_bits) << count;
}
FillBitsCache();
}
bits |= m_bits >> (32 - count);
m_bits <<= count;
m_cached_bits -= count;
return (int)bits;
}
int ReadBitCount ()
{
uint count = 0;
for (;;)
{
if (0 == m_cached_bits)
FillBitsCache();
uint bit = m_bits >> 31;
--m_cached_bits;
m_bits <<= 1;
if (0 == bit)
break;
++count;
}
return (int)count;
}
void FillBitsCache ()
{
m_bits = 0;
for (int shift = 0; shift < 32; shift += 8)
{
int b = m_input.ReadByte();
if (-1 == b)
break;
m_bits |= (uint)b << shift;
}
m_cached_bits = 32;
}
static readonly int[] BitTable = {
0, 0, 2, 0, 4, 4, 6, 0x14, 8, 0x54, 0x0C, 0x154, 0x10, 0x1154, 0x12, 0x11154,
};
}
}