GARbro-mirror/ArcFormats/Nags/ImageNGP.cs

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//! \file ImageNGP.cs
//! \date Sun Nov 08 16:11:56 2015
//! \brief NA Game System 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 GameRes.Compression;
using System.ComponentModel.Composition;
using System.IO;
using System.Windows.Media;
namespace GameRes.Formats.Nags
{
internal class NgpMetaData : ImageMetaData
{
public int PackedSize;
public int UnpackedSize;
}
[Export(typeof(ImageFormat))]
public class NgpFormat : ImageFormat
{
public override string Tag { get { return "NGP"; } }
public override string Description { get { return "NAGS engine image format"; } }
public override uint Signature { get { return 0x2050474E; } } // 'NGP '
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public override ImageMetaData ReadMetaData (IBinaryStream file)
{
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file.Position = 0x12;
int packed_size = file.ReadInt32();
uint width = file.ReadUInt32();
uint height = file.ReadUInt32();
int bpp = file.ReadUInt16() * 8;
file.Position = 0x100;
int unpacked_size = file.ReadInt32();
if (packed_size <= 0 || unpacked_size <= 0)
return null;
return new NgpMetaData
{
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Width = width,
Height = height,
BPP = bpp,
PackedSize = packed_size,
UnpackedSize = unpacked_size,
};
}
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public override ImageData Read (IBinaryStream stream, ImageMetaData info)
{
var meta = (NgpMetaData)info;
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using (var input = new StreamRegion (stream.AsStream, 0x104, meta.PackedSize, true))
using (var z = new ZLibStream (input, CompressionMode.Decompress))
{
var pixels = new byte[meta.UnpackedSize];
if (pixels.Length != z.Read (pixels, 0, pixels.Length))
throw new EndOfStreamException();
PixelFormat format;
if (32 == meta.BPP)
format = PixelFormats.Bgra32;
else if (24 == meta.BPP)
format = PixelFormats.Bgr24;
else if (8 == meta.BPP)
format = PixelFormats.Gray8;
else
throw new System.NotSupportedException ("Not supported NGP image color depth");
return ImageData.Create (info, format, null, pixels);
}
}
public override void Write (Stream file, ImageData image)
{
throw new System.NotImplementedException ("NgpFormat.Write not implemented");
}
}
}