Apply Filter Android

Apply Filter Android.cs

async void ApplyFilter(FilterType filterType)
{
			if (currentFilterType == filterType)
				return;

			var filterImage = Element as FilterImage;
			//originalBitmap = await GetBitmapAsync(filterImage.OriginalSource);
			using (Bitmap originalBitmap = await GetBitmapAsync(filterImage.OriginalSource))
			{
				var oldFilteredBitmap = filteredBitmap;
				Bitmap bmp = null;
				switch (filterType)
				{
					case FilterType.NoFilter:
						Element.Source = filterImage.OriginalSource;
						bmp = originalBitmap;
						break;
					case FilterType.BlackAndWhite:
						bmp = ApplyBlackAndWhite(originalBitmap);
						break;
					case FilterType.Hifi:
						bmp = ApplyHiFi(originalBitmap);
						break;
					case FilterType.Saturated:
						bmp = ApplySaturation(originalBitmap, 250);
						break;
					case FilterType.Vintage:
						bmp = ApplyVignette(originalBitmap);
						break;
				}

				filteredBitmap = filterType == FilterType.NoFilter ? null : bmp;
				currentFilterType = filterType;

				using (var resizedBitmap = bmp.ResizeBitmap(500, 500))
				{
					Control.SetImageBitmap(resizedBitmap);
				}

				oldFilteredBitmap?.Recycle();
			}
}