GARbro-mirror/ArcFormats/elf/ImageGP8.cs
2015-10-14 03:10:06 +04:00

145 lines
5.5 KiB
C#

//! \file ImageGP8.cs
//! \date Mon Oct 12 15:50:34 2015
//! \brief Ai5 engine indexed image.
//
// 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.Compression;
using GameRes.Utility;
using System.ComponentModel.Composition;
using System.IO;
using System.Windows.Media;
using System.Windows.Media.Imaging;
namespace GameRes.Formats.Elf
{
[Export(typeof(ImageFormat))]
public class Gp8Format : ImageFormat
{
public override string Tag { get { return "GP8"; } }
public override string Description { get { return "Ai5 engine indexed image format"; } }
public override uint Signature { get { return 0; } }
public override ImageMetaData ReadMetaData (Stream stream)
{
if (stream.Length <= 0x408)
return null;
var header = new byte[8];
stream.Read (header, 0, 8);
if (0 != LittleEndian.ToInt32 (header, 0))
return null;
int w = LittleEndian.ToInt16 (header, 4);
int h = LittleEndian.ToInt16 (header, 6);
if (w <= 0 || w > 0x1000 || h <= 0 || h > 0x1000)
return null;
return new ImageMetaData {
Width = (uint)w,
Height = (uint)h,
BPP = 8,
};
}
public override ImageData Read (Stream stream, ImageMetaData info)
{
stream.Position = 8;
var palette = ReadPalette (stream);
var pixels = new byte[info.Width * info.Height];
using (var reader = new LzssStream (stream, LzssMode.Decompress, true))
{
if (pixels.Length != reader.Read (pixels, 0, pixels.Length))
throw new InvalidFormatException();
return ImageData.CreateFlipped (info, PixelFormats.Indexed8, palette, pixels, (int)info.Width);
}
}
public static BitmapPalette ReadPalette (Stream input)
{
var palette_data = new byte[0x400];
if (palette_data.Length != input.Read (palette_data, 0, palette_data.Length))
throw new InvalidFormatException();
var palette = new Color[0x100];
for (int i = 0; i < palette.Length; ++i)
{
int c = i * 4;
palette[i] = Color.FromRgb (palette_data[c+2], palette_data[c+1], palette_data[c]);
}
return new BitmapPalette (palette);
}
public override void Write (Stream file, ImageData image)
{
throw new System.NotImplementedException ("Gp8Format.Write not implemented");
}
}
[Export(typeof(ImageFormat))]
public class MskFormat : ImageFormat
{
public override string Tag { get { return "MSK/AI5"; } }
public override string Description { get { return "Ai5 engine image mask"; } }
public override uint Signature { get { return 0; } }
public MskFormat ()
{
Extensions = new string[] { "msk" };
}
public override ImageMetaData ReadMetaData (Stream stream)
{
using (var input = new ArcView.Reader (stream))
{
int x = input.ReadInt16();
int y = input.ReadInt16();
int w = input.ReadInt16();
int h = input.ReadInt16();
if (w <= 0 || w > 0x1000 || h <= 0 || h > 0x1000
|| x < 0 || x > 0x800 || h < 0 || h > 0x800)
return null;
return new ImageMetaData {
Width = (uint)w,
Height = (uint)h,
OffsetX = x,
OffsetY = y,
BPP = 8,
};
}
}
public override ImageData Read (Stream stream, ImageMetaData info)
{
stream.Position = 8;
var pixels = new byte[info.Width * info.Height];
using (var reader = new LzssStream (stream, LzssMode.Decompress, true))
{
if (pixels.Length != reader.Read (pixels, 0, pixels.Length))
throw new InvalidFormatException();
return ImageData.CreateFlipped (info, PixelFormats.Gray8, null, pixels, (int)info.Width);
}
}
public override void Write (Stream file, ImageData image)
{
throw new System.NotImplementedException ("MskFormat.Write not implemented");
}
}
}