how resize image without save it about photosauce HOT 1 CLOSED

using System;
using System.Buffers;
using System.Drawing;
using PhotoSauce.MagicScaler;

class Program
{
    static void Main()
    {
        const int OriginalWidth = 6000;
        const int OriginalHeight = 4000;
        const int ResizedWidth = 600;
        const int ResizedHeight = 400;

        // 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
        };

        // This IPixelSource implementation generates a pre-defined test pattern.
        // You could alternatively provide an existing image file to BuildPipeline.
        using (var pixels = new TestPatternPixelSource(OriginalWidth, OriginalHeight, PixelFormats.Bgr24bpp))
        using (var pipeline = MagicImageProcessor.BuildPipeline(pixels, settings))
        {
            // Here we use a rented buffer to hold the ouput.
            // This could also be a locked buffer from a System.Drawing.Bitmap or from
            // another library.
            var buffer = ArrayPool<byte>.Shared.Rent((int)bufflen);

            // This rectangle defines the pixels we are requesting from the pipeline.
            // This example requests them all at once for simplicity, but it would be
            // more memory-efficient to request a single output line at a time in a loop,
            // assuming the target is compatible with that method of operation.
            var rect = new Rectangle(0, 0, ResizedWidth, ResizedHeight);

            // All the work is done here.
            pipeline.PixelSource.CopyPixels(rect, (int)stride, new Span<byte>(buffer, 0, (int)bufflen));

            ArrayPool<byte>.Shared.Return(buffer);
        }
    }
}