public Size MagicScalerResize()
{
// stride is width * bytes per pixel (3 for BGR), rounded up to the nearest multiple of 4
const uint stride = ResizedWidth * 3u + 3u & ~3u;
const uint bufflen = ResizedHeight * stride;
var settings = new ProcessImageSettings
{
Width = ResizedWidth,
Height = ResizedHeight,
Sharpen = false
};
using (var pixels = new TestPatternPixelSource(Width, Height, PixelFormats.Bgr24bpp))
using (var pipeline = MagicImageProcessor.BuildPipeline(pixels, settings))
{
var rect = new Rectangle(0, 0, ResizedWidth, ResizedHeight);
var buffer = ArrayPool <byte> .Shared.Rent((int)bufflen);
pipeline.PixelSource.CopyPixels(rect, (int)stride, new Span <byte>(buffer, 0, (int)bufflen));
ArrayPool <byte> .Shared.Return(buffer);
return(rect.Size);
}
}
public void MagicScalerResize()
{
// stride is width * bytes per pixel (3 for BGR), rounded up to the nearest multiple of 4
const uint stride = ResizedWidth * 3u + 3u & ~3u;
const uint bufflen = ResizedHeight * stride;
var pixels = new TestPatternPixelSource(Width, Height, PixelFormats.Bgr24bpp);
var settings = new ProcessImageSettings
{
Width = ResizedWidth,
Height = ResizedHeight
};
using (var pipeline = MagicImageProcessor.BuildPipeline(pixels, settings))
{
var rect = new System.Drawing.Rectangle(0, 0, ResizedWidth, ResizedHeight);
var buffer = Marshal.AllocHGlobal((int)bufflen);
pipeline.PixelSource.CopyPixels(rect, stride, bufflen, buffer);
Marshal.FreeHGlobal(buffer);
}
}
private static byte[] DecodeImage(Stream input, Size areaSize, int orientation)
{
// decode the image
var processedData = new MemoryStream();
using (var pipeline = MagicImageProcessor.BuildPipeline(input, new ProcessImageSettings
{
Width = areaSize.Width,
Height = areaSize.Height,
ResizeMode = CropScaleMode.Max,
Interpolation = InterpolationSettings.Lanczos,
SaveFormat = FileFormat.Bmp,
ColorProfileMode = ColorProfileMode.Normalize,
OrientationMode = OrientationMode.Ignore // we will use custom transform
}))
{
pipeline.AddTransform(new FormatConversionTransform(PixelFormats.Bgra32bpp));
pipeline.AddTransform(new OrientationTransform((Orientation)orientation));
pipeline.ExecutePipeline(processedData);
}
return(processedData.ToArray());
}
public FileInfo Rotate(FileInfo toRotate, Orientation orientation)
{
if (!toRotate.Exists)
{
return(null);
}
var newFile = Path.Combine(toRotate.Directory?.FullName ?? string.Empty, $"{Guid.NewGuid()}.jpg");
var newFileInfo = new FileInfo(newFile);
if (newFileInfo.Exists)
{
newFileInfo.Delete();
}
using var pl =
MagicImageProcessor.BuildPipeline(toRotate.FullNameWithLongFilePrefix(), new ProcessImageSettings());
pl.AddTransform(new OrientationTransform(orientation));
using var outStream = new FileStream(newFileInfo.FullName, FileMode.Create);
pl.WriteOutput(outStream);
pl.Dispose();
outStream.Dispose();
var finalFileName = toRotate.FullName;
toRotate.Delete();
FileManagement.MoveFileAndLog(newFileInfo.FullName, finalFileName);
newFileInfo = new FileInfo(finalFileName);
return(newFileInfo);
}