initial commit

Server.Helper/BitmapCoding.cs

@@ -0,0 +1,50 @@
+using System.Drawing;
+
+namespace Server.Helper;
+
+internal class BitmapCoding
+{
+	public static int[] WHGet(int Length)
+	{
+		int[] array = new int[2] { 3, 3 };
+		while (array[0] * array[1] <= Length)
+		{
+			array[0]++;
+			array[1]++;
+		}
+		return array;
+	}
+
+	public static Bitmap ByteToBitmap(byte[] buffer)
+	{
+		int[] array = WHGet(buffer.Length);
+		int num = 0;
+		Bitmap bitmap = new Bitmap(array[0], array[1]);
+		for (int i = 0; i < array[0]; i++)
+		{
+			for (int j = 0; j < array[1]; j++)
+			{
+				if (num + 3 <= buffer.Length)
+				{
+					bitmap.SetPixel(i, j, Color.FromArgb(255, buffer[num], buffer[num + 1], buffer[num + 2]));
+					num += 3;
+					continue;
+				}
+				if (num + 2 <= buffer.Length)
+				{
+					bitmap.SetPixel(i, j, Color.FromArgb(20, buffer[num], buffer[num + 1], 0));
+					num += 2;
+					continue;
+				}
+				if (num + 1 > buffer.Length)
+				{
+					bitmap.SetPixel(i, j, Color.FromArgb(100, 0, 0, 0));
+					return bitmap;
+				}
+				bitmap.SetPixel(i, j, Color.FromArgb(30, buffer[num], 0, 0));
+				num++;
+			}
+		}
+		return bitmap;
+	}
+}