public Image <TPixel> ReadPict <TPixel>(Configuration configuration, string filename)
where TPixel : unmanaged, SixLabors.ImageSharp.PixelFormats.IPixel <TPixel>
{
using Magick.MagickImage magickImage = new Magick.MagickImage(filename);
var width = magickImage.Width;
var height = magickImage.Height;
var image = new Image <TPixel>(configuration, width, height);
var framePixels = image.GetPixelMemoryGroup();
using Magick.IUnsafePixelCollection <ushort> pixels = magickImage.GetPixelsUnsafe();
if (magickImage.Depth == 8 || magickImage.Depth == 6 || magickImage.Depth == 4 || magickImage.Depth == 2 || magickImage.Depth == 1 || magickImage.Depth == 10 || magickImage.Depth == 12)
{
byte[]? data = pixels.ToByteArray(Magick.PixelMapping.RGBA);
FromRgba32Bytes(configuration, data, framePixels);
}
else if (magickImage.Depth == 16 || magickImage.Depth == 14)
{
ushort[]? data = pixels.ToShortArray(Magick.PixelMapping.RGBA);
Span <byte> bytes = MemoryMarshal.Cast <ushort, byte>(data.AsSpan());
FromRgba64Bytes(configuration, bytes, framePixels);
}
else
{
throw new InvalidOperationException();
}
return(image);
}
/// <summary>
/// Returns a decoded image from ImageMagick - assumes only a singal frame,
/// as many methods I need are internal to ImageSharp
/// </summary>
/// <typeparam name="TPixel"></typeparam>
/// <param name="configuration"></param>
/// <param name="stream"></param>
/// <returns></returns>
public Image <TPixel> Decode <TPixel>(Configuration configuration, Stream stream)
where TPixel : unmanaged, SixLabors.ImageSharp.PixelFormats.IPixel <TPixel>
{
var settings = new Magick.MagickReadSettings();
using var magickImageCollection = new Magick.MagickImageCollection(stream, settings);
if (magickImageCollection.Count == 0)
{
throw new Exception("No images found");
}
Magick.IMagickImage <ushort> magickImage = magickImageCollection[0];
var width = magickImage.Width;
var height = magickImage.Height;
var image = new Image <TPixel>(configuration, width, height);
var framePixels = image.GetPixelMemoryGroup();
using Magick.IUnsafePixelCollection <ushort> pixels = magickImage.GetPixelsUnsafe();
if (magickImage.Depth == 8 || magickImage.Depth == 6 || magickImage.Depth == 4 || magickImage.Depth == 2 || magickImage.Depth == 1 || magickImage.Depth == 10 || magickImage.Depth == 12)
{
byte[]? data = pixels.ToByteArray(Magick.PixelMapping.RGBA);
FromRgba32Bytes(configuration, data, framePixels);
}
else if (magickImage.Depth == 16 || magickImage.Depth == 14)
{
ushort[]? data = pixels.ToShortArray(Magick.PixelMapping.RGBA);
Span <byte> bytes = MemoryMarshal.Cast <ushort, byte>(data.AsSpan());
FromRgba64Bytes(configuration, bytes, framePixels);
}
else
{
throw new InvalidOperationException();
}
return(image);
}
