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Bitmap blur util for Xamarin Android
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using Android.App; | |
using Android.Support.V8.Renderscript; | |
namespace Droid | |
{ | |
public static class BitmapUtil | |
{ | |
public static Bitmap Blur(Bitmap originalBitmap) | |
{ | |
// Create the Renderscript instance that will do the work. | |
RenderScript rs = RenderScript.Create(Application.Context); | |
// Allocate memory for Renderscript to work with | |
Allocation input = Allocation.CreateFromBitmap(rs, originalBitmap, Allocation.MipmapControl.MipmapFull, (int)Renderscripts.AllocationUsage.Script); | |
Allocation output = Allocation.CreateTyped(rs, input.Type); | |
// Load up an instance of the specific script that we want to use. | |
ScriptIntrinsicBlur script = ScriptIntrinsicBlur.Create(rs, Element.U8_4(rs)); | |
script.SetInput(input); | |
// Set the blur radius | |
script.SetRadius(25); | |
// Start the ScriptIntrinisicBlur | |
script.ForEach(output); | |
// Copy the output to the blurred bitmap | |
output.CopyTo(originalBitmap); | |
return originalBitmap; | |
} | |
} | |
} |
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