GARbro-mirror/ArcFormats/ImageBGI.cs

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2015-04-04 09:26:59 +08:00
//! \file ImageBGI.cs
//! \date Fri Apr 03 01:39:41 2015
//! \brief BGI/Ethornell engine 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.BGI
{
[Export(typeof(ImageFormat))]
public class BgiFormat : ImageFormat
{
public override string Tag { get { return "BGI"; } }
public override string Description { get { return "BGI/Ethornell image format"; } }
public override uint Signature { get { return 0; } }
public BgiFormat ()
{
Extensions = new string[] { "", "bgi" };
}
public override void Write (Stream file, ImageData image)
{
throw new System.NotImplementedException ("BgiFormat.Write not implemented");
}
public override ImageMetaData ReadMetaData (Stream stream)
{
using (var input = new ArcView.Reader (stream))
{
int width = input.ReadInt16();
int height = input.ReadInt16();
if (width <= 0 || height <= 0)
return null;
int bpp = input.ReadInt32();
if (24 != bpp && 32 != bpp)
return null;
if (0 != input.ReadInt64())
return null;
return new ImageMetaData
{
Width = (uint)width,
Height = (uint)height,
BPP = bpp,
};
}
}
public override ImageData Read (Stream stream, ImageMetaData info)
{
int stride = (int)info.Width*((info.BPP+7)/8);
var pixels = new byte[stride*info.Height];
stream.Position = 0x10;
int read = stream.Read (pixels, 0, pixels.Length);
if (read != pixels.Length)
throw new InvalidFormatException();
PixelFormat format;
if (24 == info.BPP)
format = PixelFormats.Bgr24;
else
format = PixelFormats.Bgra32;
var bitmap = BitmapSource.Create ((int)info.Width, (int)info.Height, 96, 96,
format, null, pixels, stride);
bitmap.Freeze();
return new ImageData (bitmap, info);
}
}
}