GARbro-mirror/ArcFormats/Ivory/ImageMMD.cs

131 lines
4.8 KiB
C#
Raw Normal View History

2016-09-09 17:13:26 +08:00
//! \file ImageMMD.cs
//! \date Thu Sep 08 18:23:14 2016
//! \brief Ivory compressed 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 System.Windows.Media.Imaging;
using GameRes.Utility;
namespace GameRes.Formats.Ivory
{
internal class MmdMetaData : ImageMetaData
{
public int Colors;
public int Size1;
public int Size2;
public int Size3;
}
[Export(typeof(ImageFormat))]
public class MmdFormat : ImageFormat
{
public override string Tag { get { return "MOE/MMD"; } }
public override string Description { get { return "Ivory image format"; } }
public override uint Signature { get { return 0x1A444D4D; } } // 'MMD'
2016-10-15 16:21:12 +08:00
public override ImageMetaData ReadMetaData (IBinaryStream stream)
2016-09-09 17:13:26 +08:00
{
2016-10-15 16:21:12 +08:00
var header = stream.ReadHeader (0x18);
2016-09-09 17:13:26 +08:00
var info = new MmdMetaData
{
2016-10-15 16:21:12 +08:00
Width = header.ToUInt16 (4),
Height = header.ToUInt16 (6),
2016-09-09 17:13:26 +08:00
BPP = 8,
2016-10-15 16:21:12 +08:00
Size1 = header.ToInt32 (8),
Size2 = header.ToInt32 (0x0C),
Size3 = header.ToInt32 (0x10),
Colors = header.ToInt32 (0x14),
2016-09-09 17:13:26 +08:00
};
if (info.Size1 <= 0 || info.Size2 <= info.Size1 || info.Size3 <= 0)
return null;
return info;
}
2016-10-15 16:21:12 +08:00
public override ImageData Read (IBinaryStream input, ImageMetaData info)
2016-09-09 17:13:26 +08:00
{
var meta = (MmdMetaData)info;
var pixels = new byte[info.Width * info.Height];
2016-10-15 16:21:12 +08:00
input.Position = 0x18;
var buf1 = input.ReadBytes (meta.Size1);
var buf2 = input.ReadBytes (meta.Size2 - meta.Size1);
int w = (int)info.Width / 4;
var line = new byte[w];
int mask = 0x80;
int b1 = 0;
int b2 = 0;
int dst = 0;
for (int y = (int)info.Height; y > 0; --y)
2016-09-09 17:13:26 +08:00
{
2016-10-15 16:21:12 +08:00
for (int x = 0; x < w; ++x)
2016-09-09 17:13:26 +08:00
{
2016-10-15 16:21:12 +08:00
if (0 != (mask & buf1[b1]))
2016-09-09 17:13:26 +08:00
{
2016-10-15 16:21:12 +08:00
line[x] ^= buf2[b2++];
}
mask >>= 1;
if (0 == mask)
{
mask = 0x80;
++b1;
}
byte p = line[x];
int q = p >> 4;
for (int j = 0; j < 2; ++j)
{
if (0 != q)
2016-09-09 17:13:26 +08:00
{
2016-10-15 16:21:12 +08:00
int offset = ShiftTable[q + 16] + (int)info.Width * ShiftTable[q];
int src = dst - offset;
pixels[dst++] = pixels[src];
pixels[dst++] = pixels[src+1];
2016-09-09 17:13:26 +08:00
}
2016-10-15 16:21:12 +08:00
else
2016-09-09 17:13:26 +08:00
{
2016-10-15 16:21:12 +08:00
input.Read (pixels, dst, 2);
dst += 2;
2016-09-09 17:13:26 +08:00
}
2016-10-15 16:21:12 +08:00
q = p & 0xF;
2016-09-09 17:13:26 +08:00
}
}
}
2016-10-15 16:21:12 +08:00
input.Position = 0x18 + meta.Size2 + meta.Size3;
var palette = ReadPalette (input.AsStream, Math.Min (0x100, meta.Colors), PaletteFormat.Rgb);
2016-09-09 17:13:26 +08:00
return ImageData.Create (info, PixelFormats.Indexed8, palette, pixels);
}
static readonly byte[] ShiftTable = {
0, 0, 0, 0, 1, 1, 2, 2, 2, 4, 4, 4, 8, 8, 8, 16,
0, 2, 4, 8, 0, 2, 0, 2, 4, 0, 2, 4, 0, 2, 4, 0,
};
public override void Write (Stream file, ImageData image)
{
throw new System.NotImplementedException ("MmdFormat.Write not implemented");
}
}
}