NetAutoGUI/BitmapData.cs

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using OpenCvSharp;
using SkiaSharp;
using System;
using System.IO;
using Zack.Commons;

namespace NetAutoGUI
{
	public record BitmapData(byte[] Data, int Width, int Height)
	{
		public Mat ToMat(ImreadModes flags = ImreadModes.Unchanged)
		{
			return Cv2.ImDecode(Data, flags);
		}

		private static void CreateDir(string filename)
		{
			IOHelper.CreateDir(new FileInfo(filename));
		}
		public void Save(string filename, ImageType? imgType = null)
		{
			CreateDir(filename);
			using var output = File.OpenWrite(filename);
			if (imgType == null)
			{
				imgType = InferImageType(filename);
			}
			Save(output, imgType.Value);
		}

		public void Save(Stream outStream, ImageType imgType)
		{
			using var image = SKImage.FromEncodedData(Data);
			using var encodedImg = image.Encode(ToImageFormat(imgType), 100);
			encodedImg.SaveTo(outStream);
		}

		public static BitmapData Load(Stream inStream)
		{
			using var image = SKBitmap.Decode(inStream);
			using var encodedImg = image.Encode(SKEncodedImageFormat.Bmp, 100);
			byte[] data = encodedImg.ToArray();
			return new BitmapData(data, image.Width, image.Height);
		}

		public static BitmapData Load(string filename)
		{
			using var inStream = File.OpenRead(filename);
			return Load(inStream);
		}

		private static ImageType InferImageType(string filename)
		{
			string? ext = Path.GetExtension(filename);
			if (ext == null)
			{
				throw new ArgumentOutOfRangeException(nameof(filename), "no file extension");
			}
			ext = ext.ToLower();
			switch (ext)