GARbro-mirror/ArcFormats/TanukiSoft/ImageAF.cs
2018-05-03 18:42:28 +04:00

112 lines
3.9 KiB
C#

//! \file ImageAF.cs
//! \date 2018 May 03
//! \brief TanukiSoft bitmap.
//
// Copyright (C) 2018 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.ComponentModel.Composition;
using System.IO;
using System.Windows.Media;
using GameRes.Compression;
namespace GameRes.Formats.Tanuki
{
[Export(typeof(ImageFormat))]
public class AmapFormat : ImageFormat
{
public override string Tag { get { return "AMAP"; } }
public override string Description { get { return "TanukiSoft bitmap format"; } }
public override uint Signature { get { return 0x50414D41; } } // 'AMAP'
public AmapFormat ()
{
Extensions = new[] { "af" };
}
public override ImageMetaData ReadMetaData (IBinaryStream file)
{
var header = file.ReadHeader (0x14);
return new ImageMetaData {
Width = header.ToUInt16 (4),
Height = header.ToUInt16 (6),
BPP = 8,
};
}
public override ImageData Read (IBinaryStream file, ImageMetaData info)
{
file.Position = 0x10;
var pixels = LzssUnpack (file);
return ImageData.Create (info, PixelFormats.Gray8, null, pixels);
}
public override void Write (Stream file, ImageData image)
{
throw new System.NotImplementedException ("AmapFormat.Write not implemented");
}
byte[] LzssUnpack (IBinaryStream input)
{
int unpacked_size = input.ReadInt32();
var output = new byte[unpacked_size];
var frame = new byte[0x1000];
int frame_pos = 0xFEE;
int dst = 0;
int ctl = 0;
while (dst < unpacked_size)
{
ctl >>= 1;
if (0 == (ctl & 0x100))
{
ctl = input.ReadByte();
if (-1 == ctl)
break;
ctl |= 0xFF00;
}
if (0 != (ctl & 1))
{
int b = input.ReadByte();
if (-1 == b)
break;
output[dst++] = frame[frame_pos++ & 0xFFF] = (byte)b;
}
else
{
int lo = input.ReadByte();
if (-1 == lo)
break;
int hi = input.ReadByte();
if (-1 == hi)
break;
int offset = (hi & 0xF0) << 4 | lo;
for (int count = 3 + (~hi & 0xF); count != 0; --count)
{
byte v = frame[offset++ & 0xFFF];
output[dst++] = frame[frame_pos++ & 0xFFF] = v;
}
}
}
return output;
}
}
}