GARbro-mirror/ArcFormats/DigitalWorks/ImageTX.cs

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//! \file ImageTX.cs
//! \date 2018 Sep 19
//! \brief Digital Works texture format.
//
// 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 System.Windows.Media.Imaging;
namespace GameRes.Formats.DigitalWorks
{
[Export(typeof(ImageFormat))]
public class TxFormat : ImageFormat
{
public override string Tag { get { return "TX"; } }
public override string Description { get { return "Digital Works texture format"; } }
public override uint Signature { get { return 0x00035854; } } // 'TX'
const int BlockSize = 256;
public TxFormat ()
{
Extensions = new string[] { "tmx", "tx" };
Signatures = new uint[] { 0x00035854, 0x00025854, 0 };
}
public override ImageMetaData ReadMetaData (IBinaryStream file)
{
var header = file.ReadHeader (0x10);
if (!header.AsciiEqual ("TX"))
return null;
byte bpp = header[6];
if (bpp < 1 || bpp > 4)
return null;
uint w_blocks = header.ToUInt16 (2);
uint h_blocks = header.ToUInt16 (4);
return new ImageMetaData {
Width = w_blocks * BlockSize,
Height = h_blocks * BlockSize,
BPP = bpp * 8,
};
}
public override ImageData Read (IBinaryStream file, ImageMetaData info)
{
file.Position = 0x10;
int block_stride = BlockSize * (info.BPP / 8);
int stride = (int)info.Width * (info.BPP / 8);
var pixels = new byte[stride * (int)info.Height];
int x_blocks = (int)info.Width / BlockSize;
int y_blocks = (int)info.Height / BlockSize;
int dst_row = 0;
for (int y = 0; y < y_blocks; ++y)
{
int dst_col = dst_row;
for (int x = 0; x < x_blocks; ++x)
{
int dst = dst_col;
for (int i = 0; i < BlockSize; ++i)
{
file.Read (pixels, dst, block_stride);
dst += stride;
}
dst_col += block_stride;
}
dst_row += stride * BlockSize;
}
BitmapPalette palette = null;
if (8 == info.BPP)
palette = ReadPalette (file.AsStream, 0x100, PaletteFormat.BgrA);
PixelFormat format = 8 == info.BPP ? PixelFormats.Indexed8
: 24 == info.BPP ? PixelFormats.Bgr24 : PixelFormats.Bgra32;
return ImageData.Create (info, format, palette, pixels, stride);
}
public override void Write (Stream file, ImageData image)
{
throw new System.NotImplementedException ("TxFormat.Write not implemented");
}
}
}