initial commit

2026-08-27 10:57:58 -06:00
commit 773d05f8f1
1038 changed files with 109261 additions and 0 deletions
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+using System;
+using System.Drawing;
+using System.Drawing.Imaging;
+using System.IO;
+
+namespace Pulsar.Common.Video.Compression
+{
+    public class JpgCompression : IDisposable
+    {
+        private static readonly ImageCodecInfo JpegEncoderInfo = GetEncoderInfoStatic();
+        private readonly EncoderParameters _encoderParams;
+
+        public JpgCompression(long quality)
+        {
+            EncoderParameter parameter = new EncoderParameter(Encoder.Quality, quality);
+            _encoderParams = new EncoderParameters(1);
+            _encoderParams.Param[0] = parameter;
+        }
+
+        public void Dispose()
+        {
+            if (_encoderParams != null)
+            {
+                _encoderParams.Dispose();
+            }
+            GC.SuppressFinalize(this);
+        }
+
+        public byte[] Compress(Bitmap bmp)
+        {
+            if (bmp == null) throw new ArgumentNullException(nameof(bmp));
+            using (MemoryStream stream = new MemoryStream())
+            {
+                bmp.Save(stream, JpegEncoderInfo, _encoderParams);
+                return stream.ToArray();
+            }
+        }
+
+        public void Compress(Bitmap bmp, Stream targetStream)
+        {
+            if (bmp == null) throw new ArgumentNullException(nameof(bmp));
+            if (targetStream == null) throw new ArgumentNullException(nameof(targetStream));
+            bmp.Save(targetStream, JpegEncoderInfo, _encoderParams);
+        }
+
+        private static ImageCodecInfo GetEncoderInfoStatic()
+        {
+            ImageCodecInfo[] imageEncoders = ImageCodecInfo.GetImageEncoders();
+            for (int i = 0; i < imageEncoders.Length; i++)
+            {
+                if (imageEncoders[i].MimeType == "image/jpeg")
+                {
+                    return imageEncoders[i];
+                }
+            }
+            throw new InvalidOperationException("JPEG encoder not found");
+        }
+    }
+}