public Image <TPixel> Decode <TPixel>(Configuration configuration, Stream stream)
where TPixel : unmanaged, ImageSharp.PixelFormats.IPixel <TPixel>
{
var bmpReadDefines = new BmpReadDefines
{
IgnoreFileSize = !this.validate
};
var settings = new MagickReadSettings();
settings.SetDefines(bmpReadDefines);
using var magickImageCollection = new MagickImageCollection(stream, settings);
var framesList = new List <ImageFrame <TPixel> >();
foreach (IMagickImage <ushort> magicFrame in magickImageCollection)
{
var frame = new ImageFrame <TPixel>(configuration, magicFrame.Width, magicFrame.Height);
framesList.Add(frame);
MemoryGroup <TPixel> framePixels = frame.PixelBuffer.FastMemoryGroup;
using IUnsafePixelCollection <ushort> pixels = magicFrame.GetPixelsUnsafe();
if (magicFrame.Depth == 8 || magicFrame.Depth == 1)
{
byte[] data = pixels.ToByteArray(PixelMapping.RGBA);
FromRgba32Bytes(configuration, data, framePixels);
}
else if (magicFrame.Depth == 16)
{
ushort[] data = pixels.ToShortArray(PixelMapping.RGBA);
Span <byte> bytes = MemoryMarshal.Cast <ushort, byte>(data.AsSpan());
FromRgba64Bytes(configuration, bytes, framePixels);
}
else
{
throw new InvalidOperationException();
}
}
return(new Image <TPixel>(configuration, new ImageMetadata(), framesList));
}
public Image <TPixel> Decode <TPixel>(Configuration configuration, Stream stream)
where TPixel : unmanaged, ImageSharp.PixelFormats.IPixel <TPixel>
{
var bmpReadDefines = new BmpReadDefines
{
IgnoreFileSize = !this.validate
};
var settings = new MagickReadSettings();
settings.SetDefines(bmpReadDefines);
using var magickImage = new MagickImage(stream, settings);
var result = new Image <TPixel>(configuration, magickImage.Width, magickImage.Height);
MemoryGroup <TPixel> resultPixels = result.GetRootFramePixelBuffer().FastMemoryGroup;
using (IUnsafePixelCollection <ushort> pixels = magickImage.GetPixelsUnsafe())
{
if (magickImage.Depth == 8)
{
byte[] data = pixels.ToByteArray(PixelMapping.RGBA);
FromRgba32Bytes(configuration, data, resultPixels);
}
else if (magickImage.Depth == 16)
{
ushort[] data = pixels.ToShortArray(PixelMapping.RGBA);
Span <byte> bytes = MemoryMarshal.Cast <ushort, byte>(data.AsSpan());
FromRgba64Bytes(configuration, bytes, resultPixels);
}
else
{
throw new InvalidOperationException();
}
}
return(result);
}