getting there

ImageConverter/Magick.cs

@@ -0,0 +1,34 @@
+using System.Diagnostics;
+
+namespace ImageConverter
+{
+    public static class Magick
+    {
+        public static void FileConvert(String infile, String outfile)
+        {
+            ProcessStartInfo psi = new ProcessStartInfo("magick");
+            psi.ArgumentList.Add(infile);
+            psi.ArgumentList.Add(outfile);
+            Process? p = Process.Start(psi);
+            if (p==null)
+            {
+                throw new Exception("Could not launch magick");
+            }
+            p.WaitForExit();
+        }
+
+        public static Byte[] BmpToJpg(this Byte[] bmpbuf)
+        {
+            String path = Path.GetTempFileName();
+            String bmppath = Path.Combine(path, "magicktmp.bmp");
+            String jpgpath = Path.Combine(path, "magicktmp.jpg");
+            File.Delete(path);
+            Directory.CreateDirectory(path);
+            File.WriteAllBytes(bmppath, bmpbuf);
+            FileConvert(bmppath, jpgpath);
+            Byte[] buf = File.ReadAllBytes(jpgpath);
+            Directory.Delete(path, true);
+            return buf;
+        }
+    }
+}