mirror of
https://github.com/crskycode/GARbro.git
synced 2024-12-24 03:44:13 +08:00
339 lines
11 KiB
C#
339 lines
11 KiB
C#
//! \file ImageGEC.cs
|
|
//! \date Mon Jun 20 15:45:46 2016
|
|
//! \brief Yellow Pig image format.
|
|
//
|
|
// Copyright (C) 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.YellowPig
|
|
{
|
|
internal class GecMetaData : ImageMetaData
|
|
{
|
|
public byte Type;
|
|
public int DataOffset;
|
|
public int AlphaOffset;
|
|
}
|
|
|
|
[Export(typeof(ImageFormat))]
|
|
public class GecFormat : ImageFormat
|
|
{
|
|
public override string Tag { get { return "GEC"; } }
|
|
public override string Description { get { return "Yellow Pig image format"; } }
|
|
public override uint Signature { get { return 0; } }
|
|
|
|
public override ImageMetaData ReadMetaData (IBinaryStream stream)
|
|
{
|
|
var header = stream.ReadHeader (0x11);
|
|
byte type = header[0];
|
|
if (type != 0 && type != 1)
|
|
return null;
|
|
var info = new GecMetaData
|
|
{
|
|
Type = type,
|
|
OffsetX = header.ToInt16 (1),
|
|
OffsetY = header.ToInt16 (3),
|
|
Width = header.ToUInt16 (5),
|
|
Height = header.ToUInt16 (7),
|
|
BPP = 0 == type ? 24 : 32,
|
|
AlphaOffset = header.ToInt32 (9),
|
|
DataOffset = header.ToInt32 (0xD),
|
|
};
|
|
if (info.OffsetX < 0 || info.OffsetY < 0 || info.Width <= 0 || info.Height <= 0
|
|
|| info.DataOffset < 0 || info.DataOffset > stream.Length)
|
|
return null;
|
|
if (1 == type && info.AlphaOffset <= 0)
|
|
return null;
|
|
return info;
|
|
}
|
|
|
|
public override ImageData Read (IBinaryStream stream, ImageMetaData info)
|
|
{
|
|
var reader = new GecReader (stream.AsStream, (GecMetaData)info);
|
|
reader.Unpack();
|
|
return ImageData.CreateFlipped (info, reader.Format, null, reader.Data, reader.Stride);
|
|
}
|
|
|
|
public override void Write (Stream file, ImageData image)
|
|
{
|
|
throw new NotImplementedException ("GecFormat.Write not implemented");
|
|
}
|
|
}
|
|
|
|
internal sealed class GecReader
|
|
{
|
|
byte[] m_input;
|
|
byte[] m_output;
|
|
GecMetaData m_info;
|
|
|
|
public PixelFormat Format { get; private set; }
|
|
public int Stride { get; private set; }
|
|
public byte[] Data { get { return m_output; } }
|
|
|
|
public GecReader (Stream input, GecMetaData info)
|
|
{
|
|
m_input = new byte[input.Length];
|
|
input.Read (m_input, 0, m_input.Length);
|
|
m_info = info;
|
|
}
|
|
|
|
int m_bits = 0;
|
|
int m_bits_src = 0;
|
|
int m_bits_count = 0;
|
|
|
|
public void Unpack ()
|
|
{
|
|
if (0 == m_info.Type)
|
|
{
|
|
UnpackPixels (0x11);
|
|
Format = PixelFormats.Bgr24;
|
|
Stride = (int)m_info.Width * 3;
|
|
}
|
|
else
|
|
{
|
|
UnpackPixels (0x1D);
|
|
int bits = 0x1D + m_info.AlphaOffset;
|
|
m_alpha_width = LittleEndian.ToUInt16 (m_input, 0x15);
|
|
m_alpha_height = LittleEndian.ToUInt16 (m_input, 0x17);
|
|
int data = bits + LittleEndian.ToInt32 (m_input, 0x19);
|
|
var alpha = UnpackAlpha (bits, data);
|
|
ApplyAlpha (alpha);
|
|
Format = PixelFormats.Bgra32;
|
|
Stride = (int)m_info.Width * 4;
|
|
}
|
|
}
|
|
|
|
int m_alpha_width;
|
|
int m_alpha_height;
|
|
|
|
void ApplyAlpha (byte[] alpha)
|
|
{
|
|
var image = new byte[m_info.Width * m_info.Height * 4];
|
|
int src = 0;
|
|
int a_y = m_alpha_height - (int)m_info.Height - m_info.OffsetY;
|
|
int a_src = a_y * m_alpha_width + m_info.OffsetX;
|
|
int dst = 0;
|
|
for (uint y = 0; y < m_info.Height; ++y)
|
|
{
|
|
for (uint x = 0; x < m_info.Width; ++x)
|
|
{
|
|
image[dst++] = m_output[src++];
|
|
image[dst++] = m_output[src++];
|
|
image[dst++] = m_output[src++];
|
|
image[dst++] = alpha[a_src+x];
|
|
}
|
|
a_src += m_alpha_width;
|
|
}
|
|
m_output = image;
|
|
}
|
|
|
|
int m_dst;
|
|
byte[] m_table = new byte[0x100];
|
|
|
|
void UnpackPixels (int bits_src)
|
|
{
|
|
m_bits_src = bits_src;
|
|
m_bits_count = 0;
|
|
m_output = new byte[(int)m_info.Width * (int)m_info.Height * 3];
|
|
int src = bits_src + m_info.DataOffset;
|
|
for (int j = 0; j < 0x100; ++j)
|
|
m_table[j] = (byte)j;
|
|
byte[] frame1 = new byte[0x10002];
|
|
byte[] frame2 = new byte[0x10002];
|
|
m_dst = 0;
|
|
while (m_dst < m_output.Length)
|
|
{
|
|
int count = Math.Min (m_output.Length - m_dst, 0xFFFF);
|
|
if (GetNextBit() != 0)
|
|
{
|
|
ReadFrame (frame1, count + 2);
|
|
UnpackFrame1 (frame1, frame2, count + 2);
|
|
UnpackFrame2 (frame2, 2, count, LittleEndian.ToUInt16 (frame2, 0));
|
|
}
|
|
else
|
|
{
|
|
src = UnpackRLE (src, count);
|
|
}
|
|
}
|
|
}
|
|
|
|
byte[] UnpackAlpha (int bits_src, int data_src)
|
|
{
|
|
m_bits_src = bits_src;
|
|
m_bits_count = 0;
|
|
var alpha = new byte[m_alpha_height * m_alpha_width];
|
|
int dst = 0;
|
|
while (dst < alpha.Length)
|
|
{
|
|
if (GetNextBit() != 0)
|
|
{
|
|
int count = GetInt();
|
|
byte v = m_input[data_src++];
|
|
while (count --> 0)
|
|
alpha[dst++] = v;
|
|
}
|
|
else
|
|
{
|
|
alpha[dst++] = m_input[data_src++];
|
|
}
|
|
}
|
|
return alpha;
|
|
}
|
|
|
|
void ReadFrame (byte[] frame, int count) // sub_423990
|
|
{
|
|
int j = 0;
|
|
while (j < count)
|
|
{
|
|
if (0 != GetNextBit())
|
|
{
|
|
frame[j++] = (byte)GetInt();
|
|
}
|
|
else
|
|
{
|
|
int n = GetInt();
|
|
while (n --> 0)
|
|
frame[j++] = 0;
|
|
}
|
|
}
|
|
}
|
|
|
|
void UnpackFrame1 (byte[] frame, byte[] dst, int count) // sub_423670
|
|
{
|
|
byte prev = 1;
|
|
int n = 0;
|
|
while (count --> 0)
|
|
{
|
|
byte v8 = frame[n];
|
|
byte v9 = m_table[v8];
|
|
if (1 == v8)
|
|
{
|
|
if (prev != 0)
|
|
{
|
|
m_table[1] = m_table[0];
|
|
m_table[0] = v9;
|
|
}
|
|
}
|
|
else if (v8 > 1)
|
|
{
|
|
Buffer.BlockCopy (m_table, 1, m_table, 2, v8 - 1);
|
|
m_table[1] = v9;
|
|
}
|
|
dst[n++] = v9;
|
|
prev = v8;
|
|
}
|
|
}
|
|
|
|
ushort[] table1 = new ushort[0x100];
|
|
ushort[] table2 = new ushort[0x100];
|
|
ushort[] table3 = new ushort[0x10002];
|
|
|
|
void UnpackFrame2 (byte[] frame, int src, int count, ushort first) // sub_4236F0
|
|
{
|
|
for (int i = 0; i < 0x100; ++i)
|
|
table1[i] = 0;
|
|
for (int i = 0; i < count; ++i)
|
|
++table1[frame[src+i]];
|
|
ushort v = 0;
|
|
for (int i = 0; i < 0x100; i += 1)
|
|
{
|
|
table2[i] = v;
|
|
v += table1[i];
|
|
table1[i] = 0;
|
|
}
|
|
for (int i = 0; i < count; ++i)
|
|
{
|
|
int d = frame[src+i];
|
|
ushort a = table2[d];
|
|
ushort b = table1[d]++;
|
|
table3[a + b] = (ushort)i;
|
|
}
|
|
ushort next = table3[first];
|
|
while (count --> 0)
|
|
{
|
|
m_output[m_dst++] = frame[src+next];
|
|
next = table3[next];
|
|
}
|
|
}
|
|
|
|
int UnpackRLE (int src, int count) // sub_423A10
|
|
{
|
|
while (count > 0)
|
|
{
|
|
if (0 == GetNextBit())
|
|
{
|
|
m_output[m_dst++] = m_input[src++];
|
|
m_output[m_dst++] = m_input[src++];
|
|
m_output[m_dst++] = m_input[src++];
|
|
count -= 3;
|
|
}
|
|
else
|
|
{
|
|
int n = GetInt() * 3;
|
|
m_output[m_dst] = m_input[src++];
|
|
m_output[m_dst+1] = m_input[src++];
|
|
m_output[m_dst+2] = m_input[src++];
|
|
Binary.CopyOverlapped (m_output, m_dst, m_dst+3, n-3);
|
|
m_dst += n;
|
|
count -= n;
|
|
}
|
|
}
|
|
return src;
|
|
}
|
|
|
|
int GetInt () // sub_423810
|
|
{
|
|
int count = 0;
|
|
while (0 == GetNextBit())
|
|
{
|
|
++count;
|
|
}
|
|
int v = 1;
|
|
while (count > 0)
|
|
{
|
|
v = (v << 1) | GetNextBit();
|
|
--count;
|
|
}
|
|
return v;
|
|
}
|
|
|
|
int GetNextBit ()
|
|
{
|
|
if (m_bits_count-- <= 0)
|
|
{
|
|
m_bits = LittleEndian.ToInt32 (m_input, m_bits_src);
|
|
m_bits_src += 4;
|
|
m_bits_count = 31;
|
|
}
|
|
else
|
|
{
|
|
m_bits >>= 1;
|
|
}
|
|
return m_bits & 1;
|
|
}
|
|
}
|
|
}
|