mirror of
https://github.com/crskycode/GARbro.git
synced 2024-11-30 08:55:39 +08:00
355 lines
12 KiB
C#
355 lines
12 KiB
C#
//! \file ImageLIM.cs
|
|
//! \date Fri Apr 15 12:16:20 2016
|
|
//! \brief Liar-soft LIM image format implementation.
|
|
//
|
|
// Copyright (C) 2015-2016 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 GameRes.Utility;
|
|
|
|
namespace GameRes.Formats.Liar
|
|
{
|
|
internal class LimMetaData : ImageMetaData
|
|
{
|
|
public int Flags;
|
|
}
|
|
|
|
[Export(typeof(ImageFormat))]
|
|
public class LimFormat : ImageFormat
|
|
{
|
|
public override string Tag { get { return "LIM"; } }
|
|
public override string Description { get { return "Liar-soft image format"; } }
|
|
public override uint Signature { get { return 0; } }
|
|
|
|
public override ImageMetaData ReadMetaData (IBinaryStream file)
|
|
{
|
|
if (0x4C != file.ReadByte() || 0x4D != file.ReadByte())
|
|
return null;
|
|
int flag = file.ReadUInt16();
|
|
if ((flag & 0xF) != 2 && (flag & 0xF) != 3)
|
|
return null;
|
|
int bpp = 0x10 == file.ReadUInt16() ? 16 : 32;
|
|
var meta = new LimMetaData { BPP = bpp, Flags = flag };
|
|
file.ReadUInt16();
|
|
meta.Width = file.ReadUInt32();
|
|
meta.Height = file.ReadUInt32();
|
|
return meta;
|
|
}
|
|
|
|
public override ImageData Read (IBinaryStream file, ImageMetaData info)
|
|
{
|
|
using (var reader = new Reader (file, (LimMetaData)info))
|
|
{
|
|
reader.Unpack();
|
|
return ImageData.Create (info, reader.Format, null, reader.Data);
|
|
}
|
|
}
|
|
|
|
public override void Write (Stream file, ImageData image)
|
|
{
|
|
throw new NotImplementedException ("LimFormat.Write not implemented");
|
|
}
|
|
|
|
internal class Reader : IDisposable
|
|
{
|
|
IBinaryStream m_input;
|
|
byte[] m_output;
|
|
byte[] m_index;
|
|
byte[] m_image;
|
|
int m_width;
|
|
int m_height;
|
|
int m_bpp;
|
|
int m_flags;
|
|
|
|
public byte[] Data { get { return m_image; } }
|
|
public PixelFormat Format { get; private set; }
|
|
|
|
public Reader (IBinaryStream file, LimMetaData info)
|
|
{
|
|
m_input = file;
|
|
m_width = (int)info.Width;
|
|
m_height = (int)info.Height;
|
|
m_bpp = info.BPP;
|
|
m_flags = info.Flags;
|
|
if (32 == m_bpp)
|
|
Format = PixelFormats.Bgra32;
|
|
else if (16 == m_bpp)
|
|
Format = PixelFormats.Bgr565;
|
|
else
|
|
throw new InvalidFormatException();
|
|
m_image = new byte[m_width*m_height*m_bpp/8];
|
|
}
|
|
|
|
int m_remaining;
|
|
int m_current;
|
|
int m_bits;
|
|
|
|
public void Unpack ()
|
|
{
|
|
m_input.Position = 0x10;
|
|
if (32 == m_bpp)
|
|
{
|
|
Unpack32bpp();
|
|
}
|
|
else
|
|
{
|
|
if (0 != (m_flags & 0x10))
|
|
{
|
|
if (0 != (m_flags & 0xE0))
|
|
Unpack16bpp();
|
|
else
|
|
m_input.Read (m_image, 0, m_image.Length);
|
|
}
|
|
if (0 != (m_flags & 0x100))
|
|
{
|
|
if (0 != (m_flags & 0xE00))
|
|
{
|
|
m_output = null;
|
|
UnpackChannel (3);
|
|
}
|
|
else
|
|
m_output = m_input.ReadBytes (m_width * m_height);
|
|
ApplyAlpha (m_output);
|
|
}
|
|
}
|
|
}
|
|
|
|
void Unpack32bpp ()
|
|
{
|
|
byte mask = 0xFF;
|
|
for (int i = 3; i >= 0; --i)
|
|
{
|
|
UnpackChannel (3);
|
|
int src = 0;
|
|
for (int p = i; p < m_image.Length; p += 4)
|
|
{
|
|
m_image[p] = (byte)(m_output[src++] ^ mask);
|
|
}
|
|
mask = 0;
|
|
}
|
|
}
|
|
|
|
void Unpack16bpp ()
|
|
{
|
|
int image_size = m_input.ReadInt32();
|
|
m_output = m_image;
|
|
|
|
m_remaining = m_input.ReadInt32();
|
|
int index_size = m_input.ReadUInt16() * 2;
|
|
if (null == m_index || index_size > m_index.Length)
|
|
m_index = new byte[index_size];
|
|
m_input.ReadInt16(); // ignored
|
|
if (index_size != m_input.Read (m_index, 0, index_size))
|
|
throw new InvalidFormatException ("Unexpected end of file");
|
|
|
|
int card;
|
|
if (index_size > 8192)
|
|
{
|
|
m_index_threshold = 14;
|
|
m_index_length_limit = 16;
|
|
card = 4;
|
|
}
|
|
else
|
|
{
|
|
m_index_threshold = 6;
|
|
m_index_length_limit = 12;
|
|
card = 3;
|
|
}
|
|
m_current = 0;
|
|
int dst = 0;
|
|
while (dst < m_output.Length)
|
|
{
|
|
int bits = GetBits (card);
|
|
if (-1 == bits)
|
|
break;
|
|
|
|
if (0 != bits)
|
|
{
|
|
int index = GetIndex (bits);
|
|
if (index < 0)
|
|
break;
|
|
if (dst + 1 >= m_output.Length)
|
|
break;
|
|
|
|
m_output[dst++] = m_index[index*2];
|
|
m_output[dst++] = m_index[index*2+1];
|
|
}
|
|
else
|
|
{
|
|
int count = GetBits (4);
|
|
if (-1 == count)
|
|
break;
|
|
|
|
bits = GetBits (card);
|
|
if (-1 == bits)
|
|
break;
|
|
|
|
int index = GetIndex (bits);
|
|
if (-1 == index)
|
|
break;
|
|
count += 2;
|
|
index *= 2;
|
|
for (int i = 0; i < count; i++)
|
|
{
|
|
if (dst + 1 >= m_output.Length)
|
|
return;
|
|
m_output[dst++] = m_index[index];
|
|
m_output[dst++] = m_index[index+1];
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
void ApplyAlpha (byte[] alpha)
|
|
{
|
|
var pixels = new byte[m_width*m_height*4];
|
|
int alpha_src = 0;
|
|
int dst = 0;
|
|
for (int i = 0; i < m_image.Length; i += 2)
|
|
{
|
|
int color = LittleEndian.ToUInt16 (m_image, i);
|
|
pixels[dst++] = (byte)((color & 0x001F) * 0xFF / 0x1F);
|
|
pixels[dst++] = (byte)((color & 0x07E0) * 0xFF / 0x7E0);
|
|
pixels[dst++] = (byte)((color & 0xF800) * 0xFF / 0xF800);
|
|
pixels[dst++] = (byte)~alpha[alpha_src++];
|
|
}
|
|
m_image = pixels;
|
|
Format = PixelFormats.Bgra32;
|
|
}
|
|
|
|
void UnpackChannel (int card)
|
|
{
|
|
m_index_threshold = 6;
|
|
m_index_length_limit = 12;
|
|
|
|
int channel_size = m_input.ReadInt32();
|
|
if (null == m_output || m_output.Length < channel_size)
|
|
m_output = new byte[channel_size];
|
|
m_remaining = m_input.ReadInt32();
|
|
|
|
int index_size = m_input.ReadUInt16();
|
|
if (null == m_index || index_size > m_index.Length)
|
|
m_index = new byte[index_size];
|
|
m_input.ReadInt16(); // ignored
|
|
if (index_size != m_input.Read (m_index, 0, index_size))
|
|
throw new InvalidFormatException ("Unexpected end of file");
|
|
|
|
m_current = 0;
|
|
int dst = 0;
|
|
while (dst < m_output.Length)
|
|
{
|
|
int bits = GetBits (card);
|
|
if (-1 == bits)
|
|
break;
|
|
|
|
if (0 != bits)
|
|
{
|
|
int index = GetIndex (bits);
|
|
if (index < 0)
|
|
break;
|
|
if (dst + 1 >= m_output.Length)
|
|
break;
|
|
|
|
m_output[dst++] = m_index[index];
|
|
}
|
|
else
|
|
{
|
|
int count = GetBits (4);
|
|
if (-1 == count)
|
|
break;
|
|
|
|
bits = GetBits (card);
|
|
if (-1 == bits)
|
|
break;
|
|
|
|
int index = GetIndex (bits);
|
|
if (-1 == index)
|
|
break;
|
|
count += 2;
|
|
for (int i = 0; i < count; i++)
|
|
{
|
|
if (dst >= m_output.Length)
|
|
return;
|
|
m_output[dst++] = m_index[index];
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
private int GetBits (int n)
|
|
{
|
|
int v = 0;
|
|
while (n > 0)
|
|
{
|
|
if (0 == m_current)
|
|
{
|
|
if (0 == m_remaining)
|
|
return 0;
|
|
m_bits = m_input.ReadByte();
|
|
--m_remaining;
|
|
m_current = 8;
|
|
}
|
|
v <<= 1;
|
|
m_bits <<= 1;
|
|
v |= (m_bits >> 8) & 1;
|
|
--m_current;
|
|
--n;
|
|
}
|
|
return v;
|
|
}
|
|
|
|
int m_index_threshold;
|
|
int m_index_length_limit;
|
|
|
|
private int GetIndex (int bits)
|
|
{
|
|
if (bits <= m_index_threshold)
|
|
{
|
|
if (0 == bits)
|
|
return -1;
|
|
if (1 == bits--)
|
|
return GetBits (1);
|
|
return (1 << bits) | GetBits (bits);
|
|
}
|
|
for (int i = m_index_threshold; i < m_index_length_limit; ++i)
|
|
{
|
|
bits = GetBits (1);
|
|
if (-1 == bits)
|
|
return -1;
|
|
if (0 == bits)
|
|
return (1 << i) | GetBits (i);
|
|
}
|
|
return -1;
|
|
}
|
|
|
|
#region IDisposable Members
|
|
public void Dispose ()
|
|
{
|
|
}
|
|
#endregion
|
|
}
|
|
}
|
|
}
|