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//! \file ImageYGA.cs
//! \date 2018 Mar 07
//! \brief Yaneurao image 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 GameRes.Compression;
namespace GameRes.Formats.Yaneurao
{
internal class YgaMetaData : ImageMetaData
{
public int UnpackedSize;
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public bool IsCompressed;
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}
[Export(typeof(ImageFormat))]
public class YgaFormat : ImageFormat
{
public override string Tag { get { return "YGA"; } }
public override string Description { get { return "Yaneurao image format"; } }
public override uint Signature { get { return 0x616779; } } // 'yga'
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public YgaFormat ()
{
Extensions = new string[] { "yga", "epf" };
Signatures = new uint[] { 0x616779, 0x667065 }; // 'epf'
}
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public override ImageMetaData ReadMetaData (IBinaryStream file)
{
var header = file.ReadHeader (0x18);
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int compression = header.ToInt32 (0xC);
if (compression > 1)
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return null;
return new YgaMetaData {
Width = header.ToUInt32 (4),
Height = header.ToUInt32 (8),
BPP = 32,
UnpackedSize = header.ToInt32 (0x10),
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IsCompressed = compression != 0,
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};
}
public override ImageData Read (IBinaryStream file, ImageMetaData info)
{
var meta = (YgaMetaData)info;
file.Position = 0x18;
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var pixels = new byte[meta.UnpackedSize];
if (meta.IsCompressed)
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{
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using (var input = new LzssStream (file.AsStream, LzssMode.Decompress, true))
input.Read (pixels, 0, meta.UnpackedSize);
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}
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else
file.Read (pixels, 0, meta.UnpackedSize);
return ImageData.Create (info, PixelFormats.Bgra32, null, pixels);
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}
public override void Write (Stream file, ImageData image)
{
throw new System.NotImplementedException ("YgaFormat.Write not implemented");
}
}
}