Reference FastAndroidCamera nuget instead of maintaining own copy. Add a FastJavaArrayEx.BlockCopyTo method to compensate for missing funtionality.

Author: nielsenko

Source/ZXing.Net.Mobile.Android/CameraExtensions.cs

@@ -0,0 +1,17 @@
+using System;
+using System.Runtime.InteropServices;
+using ApxLabs.FastAndroidCamera;
+
+namespace ZXing.Mobile
+{
+	public static class FastJavaArrayEx
+	{
+		public static void BlockCopyTo(this FastJavaByteArray self, int sourceIndex, byte[] array, int arrayIndex, int length)
+		{
+			unsafe
+			{
+				Marshal.Copy(new IntPtr(self.Raw + sourceIndex), array, arrayIndex, Math.Min(length, Math.Min(self.Count, array.Length - arrayIndex)));
+			}
+		}
+	}
+}