mirror of
https://github.com/crskycode/GARbro.git
synced 2024-11-23 21:55:34 +08:00
263 lines
8.5 KiB
C#
263 lines
8.5 KiB
C#
//! \file ImageCZ.cs
|
|
//! \date 2019 Mar 14
|
|
//! \brief Real Live compressed image format.
|
|
//
|
|
// Copyright (C) 2019 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.Collections.Generic;
|
|
using System.ComponentModel.Composition;
|
|
using System.IO;
|
|
using System.Windows.Media;
|
|
using System.Windows.Media.Imaging;
|
|
using GameRes.Utility;
|
|
|
|
namespace GameRes.Formats.Key
|
|
{
|
|
internal class CzMetaData : ImageMetaData
|
|
{
|
|
public int Version;
|
|
public uint HeaderLength;
|
|
}
|
|
|
|
[Export(typeof(ImageFormat))]
|
|
public class CzFormat : ImageFormat
|
|
{
|
|
public override string Tag { get { return "CZ"; } }
|
|
public override string Description { get { return "Key compressed image format"; } }
|
|
public override uint Signature { get { return 0x315A43; } } // 'CZ1'
|
|
|
|
public CzFormat ()
|
|
{
|
|
Extensions = new[] { "cz", "cz0", "cz1", "cz3" };
|
|
Signatures = new uint[] { 0x305A43, 0x315A43, 0x335A43 }; // 'CZ0', 'CZ1', 'CZ3'
|
|
}
|
|
|
|
public override ImageMetaData ReadMetaData (IBinaryStream file)
|
|
{
|
|
var header = file.ReadHeader (0x10);
|
|
var info = new CzMetaData {
|
|
Width = header.ToUInt16 (8),
|
|
Height = header.ToUInt16 (10),
|
|
BPP = header.ToUInt16 (12),
|
|
HeaderLength = header.ToUInt32 (4),
|
|
Version = header[2] - '0',
|
|
};
|
|
if (info.HeaderLength > 0x18)
|
|
{
|
|
info.OffsetX = file.ReadInt16();
|
|
info.OffsetY = file.ReadInt16();
|
|
}
|
|
return info;
|
|
}
|
|
|
|
public override ImageData Read (IBinaryStream file, ImageMetaData info)
|
|
{
|
|
var reader = new CzDecoder (file, (CzMetaData)info);
|
|
return reader.Unpack();
|
|
}
|
|
|
|
public override void Write (Stream file, ImageData image)
|
|
{
|
|
throw new System.NotImplementedException ("CzFormat.Write not implemented");
|
|
}
|
|
}
|
|
|
|
internal class CzDecoder
|
|
{
|
|
IBinaryStream m_input;
|
|
CzMetaData m_info;
|
|
|
|
BitmapPalette Palette { get; set; }
|
|
PixelFormat Format { get; set; }
|
|
|
|
public CzDecoder (IBinaryStream input, CzMetaData info)
|
|
{
|
|
m_input = input;
|
|
m_info = info;
|
|
m_output = new byte[m_info.iWidth * m_info.iHeight * m_info.BPP / 8];
|
|
Format = 8 == m_info.BPP ? PixelFormats.Indexed8 : PixelFormats.Bgra32;
|
|
}
|
|
|
|
byte[] m_output;
|
|
int m_dst;
|
|
|
|
public ImageData Unpack ()
|
|
{
|
|
m_input.Position = m_info.HeaderLength;
|
|
if (8 == m_info.BPP)
|
|
Palette = ImageFormat.ReadPalette (m_input.AsStream, 0x100, PaletteFormat.RgbA);
|
|
switch (m_info.Version)
|
|
{
|
|
case 3: UnpackCz3(); break;
|
|
case 2: UnpackCz2(); break;
|
|
case 1: UnpackCz1(); break;
|
|
case 0: UnpackCz0(); break;
|
|
}
|
|
if (32 == m_info.BPP)
|
|
ConvertToBgrA();
|
|
return ImageData.Create (m_info, Format, Palette, m_output);
|
|
}
|
|
|
|
void UnpackCz0 ()
|
|
{
|
|
m_input.Read (m_output, 0, m_output.Length);
|
|
}
|
|
|
|
void UnpackCz1 ()
|
|
{
|
|
int part_count = m_input.ReadInt32();
|
|
var part_sizes = new int[part_count];
|
|
int total_size = 0;
|
|
for (int i = 0; i < part_count; ++i)
|
|
{
|
|
int part_size = m_input.ReadInt32() * 2;
|
|
part_sizes[i] = part_size;
|
|
m_input.ReadInt32(); // unpacked size
|
|
total_size += part_size;
|
|
}
|
|
if (m_input.Position + total_size > m_input.Length)
|
|
throw new InvalidFormatException();
|
|
m_dst = 0;
|
|
for (int i = 0; i < part_count; ++i)
|
|
{
|
|
m_chunkCache.Clear();
|
|
var part = m_input.ReadBytes (part_sizes[i]);
|
|
for (int j = 0; j < part.Length; j += 2)
|
|
{
|
|
byte ctl = part[j+1];
|
|
if (0 == ctl)
|
|
{
|
|
m_output[m_dst++] = part[j];
|
|
}
|
|
else
|
|
{
|
|
m_dst += CopyRange (part, GetOffset (part, j), m_dst);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
void UnpackCz2 ()
|
|
{
|
|
UnpackCz1();
|
|
int stride = m_info.iWidth * m_info.BPP / 8 / 4;
|
|
var pixels = new uint[m_output.Length / 4];
|
|
Buffer.BlockCopy (m_output, 0, pixels, 0, m_output.Length);
|
|
int third = (m_info.iHeight + 2) / 3;
|
|
for (int y = 0; y < m_info.iHeight; ++y)
|
|
{
|
|
int dst = m_info.iWidth * y;
|
|
if (y % third != 0)
|
|
{
|
|
for (int x = 0; x < stride; ++x)
|
|
{
|
|
pixels[dst + x] += pixels[dst + x - stride];
|
|
}
|
|
}
|
|
}
|
|
Buffer.BlockCopy (pixels, 0, m_output, 0, m_output.Length);
|
|
}
|
|
|
|
void UnpackCz3 ()
|
|
{
|
|
UnpackCz1();
|
|
int stride = m_info.iWidth * m_info.BPP / 8;
|
|
int third = (m_info.iHeight + 2) / 3;
|
|
for (int y = 0; y < m_info.iHeight; ++y)
|
|
{
|
|
int dst = y * stride;
|
|
if (y % third != 0)
|
|
{
|
|
for (int x = 0; x < stride; ++x)
|
|
{
|
|
m_output[dst + x] += m_output[dst + x - stride];
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
void ConvertToBgrA ()
|
|
{
|
|
for (int i = 0; i < m_output.Length; i += 4)
|
|
{
|
|
byte r = m_output[i];
|
|
m_output[i] = m_output[i+2];
|
|
m_output[i+2] = r;
|
|
}
|
|
}
|
|
|
|
struct Range
|
|
{
|
|
public int Start;
|
|
public int Length;
|
|
}
|
|
|
|
readonly Dictionary<int, Range> m_chunkCache = new Dictionary<int, Range>();
|
|
|
|
static int GetOffset (byte[] input, int src)
|
|
{
|
|
return ((input[src] | input[src+1] << 8) - 0x101) * 2;
|
|
}
|
|
|
|
int CopyRange (byte[] input, int src, int dst)
|
|
{
|
|
Range range;
|
|
if (m_chunkCache.TryGetValue (src, out range))
|
|
{
|
|
Binary.CopyOverlapped (m_output, range.Start, dst, range.Length);
|
|
return range.Length;
|
|
}
|
|
int start_pos = dst;
|
|
|
|
if (input[src+1] == 0)
|
|
m_output[dst++] = input[src];
|
|
else if (GetOffset (input, src) == src)
|
|
m_output[dst++] = 0;
|
|
else
|
|
dst += CopyRange (input, GetOffset (input, src), dst);
|
|
|
|
if (input[src+3] == 0)
|
|
m_output[dst++] = input[src+2];
|
|
else if (GetOffset (input, src+2) == src)
|
|
m_output[dst++] = m_output[start_pos];
|
|
else
|
|
m_output[dst++] = CopyOne (input, GetOffset (input, src+2));
|
|
|
|
range.Start = start_pos;
|
|
range.Length = dst - start_pos;
|
|
m_chunkCache[src] = range;
|
|
return range.Length;
|
|
}
|
|
|
|
byte CopyOne (byte[] input, int src)
|
|
{
|
|
if (input[src+1] == 0)
|
|
return input[src];
|
|
else if (GetOffset (input, src) == src)
|
|
return 0;
|
|
else
|
|
return CopyOne (input, GetOffset (input, src));
|
|
}
|
|
}
|
|
}
|