GARbro-mirror/ArcFormats/Qlie/ImageDPNG.cs

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//! \file ImageDPNG.cs
//! \date Fri Nov 06 14:16:24 2015
//! \brief QLIE tiled PNG 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 System.ComponentModel.Composition;
using System.IO;
using System.Windows;
using System.Windows.Media;
using System.Windows.Media.Imaging;
namespace GameRes.Formats.Qlie
{
internal class DpngMetaData : ImageMetaData
{
public int TileCount;
}
[Export(typeof(ImageFormat))]
public class DpngFormat : ImageFormat
{
public override string Tag { get { return "DPNG"; } }
public override string Description { get { return "QLIE tiled image format"; } }
public override uint Signature { get { return 0x474E5044; } } // 'DPNG'
public DpngFormat ()
{
Extensions = new string[] { "png" };
}
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public override ImageMetaData ReadMetaData (IBinaryStream file)
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{
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file.Position = 8;
var info = new DpngMetaData { BPP = 32 };
info.TileCount = file.ReadInt32();
if (info.TileCount <= 0)
return null;
info.Width = file.ReadUInt32();
info.Height = file.ReadUInt32();
return info;
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}
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public override ImageData Read (IBinaryStream stream, ImageMetaData info)
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{
var meta = (DpngMetaData)info;
var bitmap = new WriteableBitmap ((int)info.Width, (int)info.Height,
ImageData.DefaultDpiX, ImageData.DefaultDpiY, PixelFormats.Pbgra32, null);
long next_tile = 0x14;
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for (int i = 0; i < meta.TileCount; ++i)
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{
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stream.Position = next_tile;
int x = stream.ReadInt32();
int y = stream.ReadInt32();
int width = stream.ReadInt32();
int height = stream.ReadInt32();
uint size = stream.ReadUInt32();
stream.Seek (8, SeekOrigin.Current);
next_tile = stream.Position + size;
if (0 == size)
continue;
using (var png = new StreamRegion (stream.AsStream, stream.Position, size, true))
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{
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var decoder = new PngBitmapDecoder (png,
BitmapCreateOptions.None, BitmapCacheOption.OnLoad);
var frame = new FormatConvertedBitmap (decoder.Frames[0], PixelFormats.Pbgra32, null, 0);
int stride = frame.PixelWidth * 4;
var pixels = new byte[stride * frame.PixelHeight];
frame.CopyPixels (pixels, stride, 0);
var rect = new Int32Rect (0, 0, frame.PixelWidth, frame.PixelHeight);
bitmap.WritePixels (rect, pixels, stride, x, y);
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}
}
bitmap.Freeze();
return new ImageData (bitmap, info);
}
public override void Write (Stream file, ImageData image)
{
throw new System.NotImplementedException ("DpngFormat.Write not implemented");
}
}
}