mirror of
https://github.com/crskycode/GARbro.git
synced 2024-10-23 07:38:16 +08:00
312 lines
11 KiB
C#
312 lines
11 KiB
C#
//! \file ImageGP.cs
|
|
//! \date Thu Nov 12 14:00:52 2015
|
|
//! \brief old Eushully image format.
|
|
//
|
|
// Copyright (C) 2015 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;
|
|
|
|
namespace GameRes.Formats.Eushully
|
|
{
|
|
internal class GpMetaData : ImageMetaData
|
|
{
|
|
public bool HasAlpha;
|
|
public int Method;
|
|
public int ElementSize;
|
|
public int PixelsPerElement;
|
|
public int PaletteSize;
|
|
}
|
|
|
|
[Export(typeof(ImageFormat))]
|
|
public class GpFormat : ImageFormat
|
|
{
|
|
public override string Tag { get { return "GP/EUSHULLY"; } }
|
|
public override string Description { get { return "Old Eushully graphic format"; } }
|
|
public override uint Signature { get { return 0; } }
|
|
|
|
public GpFormat ()
|
|
{
|
|
Extensions = new string[] { "gpcf" }; // made-up, real files have no extension
|
|
}
|
|
|
|
public override ImageMetaData ReadMetaData (IBinaryStream stream)
|
|
{
|
|
int alpha_channel = stream.ReadByte();
|
|
int method = stream.ReadByte();
|
|
int align1 = stream.ReadByte();
|
|
int align2 = stream.ReadByte();
|
|
int bpp = stream.ReadByte();
|
|
if (alpha_channel < 0 || alpha_channel > 1 || method < 0 || method > 2
|
|
|| align1 < 0 || align1 > 4 || align2 < 0 || align2 > 4
|
|
|| bpp < 0 || !(bpp <= 16 || 24 == bpp || 32 == bpp))
|
|
return null;
|
|
|
|
int palette_size = stream.ReadInt32();
|
|
uint width = stream.ReadUInt16();
|
|
uint height = stream.ReadUInt16();
|
|
if (palette_size <= 0 || 0 == width || 0 == height || palette_size >= stream.Length)
|
|
return null;
|
|
if (bpp > 0 && bpp <= 8 && palette_size > 0x100)
|
|
return null;
|
|
return new GpMetaData
|
|
{
|
|
Width = width,
|
|
Height = height,
|
|
BPP = bpp == 0 ? 24 : bpp,
|
|
HasAlpha = alpha_channel != 0,
|
|
Method = method,
|
|
ElementSize = align1,
|
|
PixelsPerElement = align2,
|
|
PaletteSize = palette_size,
|
|
};
|
|
}
|
|
|
|
public override ImageData Read (IBinaryStream stream, ImageMetaData info)
|
|
{
|
|
var meta = (GpMetaData)info;
|
|
using (var reader = new GpReader (stream, meta))
|
|
{
|
|
reader.Unpack();
|
|
return ImageData.Create (info, reader.Format, reader.Palette, reader.Data, reader.Stride);
|
|
}
|
|
}
|
|
|
|
public override void Write (Stream file, ImageData image)
|
|
{
|
|
throw new System.NotImplementedException ("GpFormat.Write not implemented");
|
|
}
|
|
}
|
|
|
|
internal sealed class GpReader : IDisposable
|
|
{
|
|
IBinaryStream m_input;
|
|
GpMetaData m_info;
|
|
int m_width;
|
|
int m_height;
|
|
|
|
public PixelFormat Format { get; private set; }
|
|
public BitmapPalette Palette { get; private set; }
|
|
public byte[] Data { get; private set; }
|
|
public int Stride { get; private set; }
|
|
|
|
public GpReader (IBinaryStream input, GpMetaData info)
|
|
{
|
|
m_info = info;
|
|
m_width = (int)m_info.Width;
|
|
m_height = (int)m_info.Height;
|
|
m_input = input;
|
|
}
|
|
|
|
public void Unpack ()
|
|
{
|
|
m_input.Position = 0xD;
|
|
switch (m_info.Method)
|
|
{
|
|
case 0: UnpackV0(); break;
|
|
case 1: UnpackV1(); break;
|
|
case 2: UnpackV2(); break;
|
|
default: throw new NotSupportedException ("Not supported GPC image format");
|
|
}
|
|
if (m_info.HasAlpha)
|
|
{
|
|
if (ReadAlpha())
|
|
Format = PixelFormats.Bgra32;
|
|
}
|
|
}
|
|
|
|
void UnpackV0 ()
|
|
{
|
|
var image = m_input.ReadBytes (m_height * m_width * 3);
|
|
Stride = m_width * 4;
|
|
var pixels = new byte[Stride * m_height];
|
|
int src = 0;
|
|
int dst = 0;
|
|
while (src < image.Length)
|
|
{
|
|
pixels[dst++] = image[src+2];
|
|
pixels[dst++] = image[src+1];
|
|
pixels[dst++] = image[src];
|
|
src += 3;
|
|
dst++;
|
|
}
|
|
Data = pixels;
|
|
Format = PixelFormats.Bgr32;
|
|
}
|
|
|
|
void UnpackV1 ()
|
|
{
|
|
var palette = m_input.ReadBytes (3 * m_info.PaletteSize);
|
|
if (8 == m_info.BPP && !m_info.HasAlpha)
|
|
{
|
|
SetPalette (palette, m_info.PaletteSize);
|
|
Data = m_input.ReadBytes (m_width*m_height);
|
|
Format = PixelFormats.Indexed8;
|
|
Stride = m_width;
|
|
}
|
|
else
|
|
{
|
|
Data = ReadIndexedImage (palette);
|
|
Format = PixelFormats.Bgr32;
|
|
Stride = m_width * 4;
|
|
}
|
|
}
|
|
|
|
byte[] ReadIndexedImage (byte[] palette)
|
|
{
|
|
int rgb_mask = (1 << m_info.BPP) - 1;
|
|
var chunk = new byte[4];
|
|
var pixels = new byte[m_width*m_height*4];
|
|
int dst = 0;
|
|
for (int y = 0; y < m_height; ++y)
|
|
{
|
|
int x = 0;
|
|
while (x < m_width)
|
|
{
|
|
m_input.Read (chunk, 0, m_info.ElementSize);
|
|
int color = LittleEndian.ToInt32 (chunk, 0);
|
|
for (int i = 0; i < m_info.PixelsPerElement & x < m_width; ++i)
|
|
{
|
|
int index = 3 * (color & rgb_mask);
|
|
if (index >= palette.Length)
|
|
throw new InvalidFormatException();
|
|
color >>= m_info.BPP;
|
|
pixels[dst++] = palette[index+2];
|
|
pixels[dst++] = palette[index+1];
|
|
pixels[dst++] = palette[index];
|
|
++dst;
|
|
++x;
|
|
}
|
|
}
|
|
}
|
|
return pixels;
|
|
}
|
|
|
|
void SetPalette (byte[] palette_data, int colors)
|
|
{
|
|
var palette = new Color[colors];
|
|
for (int i = 0; i < palette.Length; ++i)
|
|
{
|
|
int c = i * 3;
|
|
palette[i] = Color.FromRgb (palette_data[c], palette_data[c+1], palette_data[c+2]);
|
|
}
|
|
Palette = new BitmapPalette (palette);
|
|
}
|
|
|
|
void UnpackV2 ()
|
|
{
|
|
Stride = m_width * 4;
|
|
var palette = m_input.ReadBytes (3 * m_info.PaletteSize);
|
|
|
|
int back1 = m_input.ReadInt32() * 3; // index within palette
|
|
int back2 = m_input.ReadInt32();
|
|
if (back2 < 0)
|
|
back2 += m_info.PaletteSize;
|
|
back2 *= 3;
|
|
m_input.ReadInt32(); // data_size
|
|
|
|
int rgb_mask = (1 << m_info.BPP) - 1;
|
|
|
|
var pixels = new byte[Stride*m_height];
|
|
int dst = 0;
|
|
var chunk = new byte[4];
|
|
for (int y = 0; y < m_height; ++y)
|
|
{
|
|
int x = 0;
|
|
while (x < m_width)
|
|
{
|
|
ushort background_length = m_input.ReadUInt16();
|
|
ushort foreground_length = m_input.ReadUInt16();
|
|
int color; // index within palette
|
|
if ((background_length & 0x8000) == 0)
|
|
{
|
|
color = back1;
|
|
}
|
|
else
|
|
{
|
|
color = back2;
|
|
background_length &= 0x7FFF;
|
|
}
|
|
int i;
|
|
for (i = 0; i < background_length; ++i)
|
|
{
|
|
pixels[dst++] = palette[color+2];
|
|
pixels[dst++] = palette[color+1];
|
|
pixels[dst++] = palette[color];
|
|
++dst;
|
|
++x;
|
|
}
|
|
i = 0;
|
|
while (i < foreground_length && x < m_width)
|
|
{
|
|
m_input.Read (chunk, 0, m_info.ElementSize);
|
|
int element = LittleEndian.ToInt32 (chunk, 0);
|
|
for (int j = 0; j != m_info.PixelsPerElement && x < m_width && i < foreground_length; ++j)
|
|
{
|
|
color = 3 * (element & rgb_mask);
|
|
element >>= m_info.BPP;
|
|
pixels[dst++] = palette[color+2];
|
|
pixels[dst++] = palette[color+1];
|
|
pixels[dst++] = palette[color];
|
|
++dst;
|
|
++x;
|
|
++i;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
Data = pixels;
|
|
Format = PixelFormats.Bgr32;
|
|
}
|
|
|
|
bool ReadAlpha ()
|
|
{
|
|
var w = m_input.ReadInt32();
|
|
var h = m_input.ReadInt32();
|
|
if (w != m_width || h != m_height)
|
|
return false;
|
|
int i = 3;
|
|
while (i < Data.Length)
|
|
{
|
|
byte alpha = m_input.ReadUInt8();
|
|
int count = m_input.ReadUInt8();
|
|
for (int j = 0; j < count && i < Data.Length; ++j)
|
|
{
|
|
Data[i] = alpha;
|
|
i += 4;
|
|
}
|
|
}
|
|
return true;
|
|
}
|
|
|
|
#region IDisposable Members
|
|
public void Dispose ()
|
|
{
|
|
}
|
|
#endregion
|
|
}
|
|
}
|