Create JpgCompression.cs

Author: NYAN-x-CAT

AsyncRAT-C#/Server/StreamLibrary/JpgCompression.cs

@@ -0,0 +1,72 @@
+using System;
+using System.Collections.Generic;
+using System.Drawing;
+using System.Drawing.Imaging;
+using System.IO;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace Server.StreamLibrary
+{
+    public class JpgCompression : IDisposable
+    {
+        private readonly ImageCodecInfo _encoderInfo;
+        private readonly EncoderParameters _encoderParams;
+
+        public JpgCompression(long quality)
+        {
+            EncoderParameter parameter = new EncoderParameter(System.Drawing.Imaging.Encoder.Quality, quality);
+            this._encoderInfo = GetEncoderInfo("image/jpeg");
+            this._encoderParams = new EncoderParameters(2);
+            this._encoderParams.Param[0] = parameter;
+            this._encoderParams.Param[1] = new EncoderParameter(System.Drawing.Imaging.Encoder.Compression, (long)EncoderValue.CompressionRle);
+        }
+
+        public void Dispose()
+        {
+            Dispose(true);
+
+            GC.SuppressFinalize(this);
+        }
+
+        protected virtual void Dispose(bool disposing)
+        {
+            if (disposing)
+            {
+                if (_encoderParams != null)
+                {
+                    _encoderParams.Dispose();
+                }
+            }
+        }
+
+        public byte[] Compress(Bitmap bmp)
+        {
+            using (MemoryStream stream = new MemoryStream())
+            {
+                bmp.Save(stream, _encoderInfo, _encoderParams);
+                return stream.ToArray();
+            }
+        }
+
+        public void Compress(Bitmap bmp, ref Stream targetStream)
+        {
+            bmp.Save(targetStream, _encoderInfo, _encoderParams);
+        }
+
+        private ImageCodecInfo GetEncoderInfo(string mimeType)
+        {
+            ImageCodecInfo[] imageEncoders = ImageCodecInfo.GetImageEncoders();
+            int num2 = imageEncoders.Length - 1;
+            for (int i = 0; i <= num2; i++)
+            {
+                if (imageEncoders[i].MimeType == mimeType)
+                {
+                    return imageEncoders[i];
+                }
+            }
+            return null;
+        }
+    }
+}