Merge MKDT_0002

MarketData/MarketDataLib/CNNProcessing/BitmapExtensions.cs

@@ -0,0 +1,32 @@
+using System.IO;
+//using System.Linq;
+// using MarketData.Utils;
+//using System.Drawing.Imaging;
+//using System.Runtime.InteropServices;
+//using System.Drawing;
+using SkiaSharp;
+
+namespace MarketData.CNNProcessing
+{
+	public static class BitmapExtensions
+	{
+// This call is used to generate the training, test, and validation bitmaps..  
+// I noticed a large difference in the accuracy or the model when the quality parameter is 100.
+// I therefore intentionally not using EncoderParameters to specify quality but instead taking the default quality.
+			public static void SaveJPG100(this SKBitmap bitmap, string filename)
+			{       
+			  if(File.Exists(filename))File.Delete(filename);
+				using FileStream stream = new FileStream(filename, FileMode.Create, FileAccess.Write);
+				using SKImage image = SKImage.FromBitmap(bitmap); 
+				using SKData encodedImage = image.Encode(SKEncodedImageFormat.Jpeg,100);
+				encodedImage.SaveTo(stream);		
+			}
+
+			public static void SaveJPG100(this SKBitmap bitmap, Stream stream)
+			{
+				using SKImage image = SKImage.FromBitmap(bitmap); 
+				using SKData encodedImage = image.Encode(SKEncodedImageFormat.Jpeg,100);
+				encodedImage.SaveTo(stream);			
+			}
+	}
+}