Blur drawable or bitmap on android using renderscript

Blur.java

public static class Blur {

        private static final float BLUR_RADIUS = 20.5f; // 25 is maximum radius
        
        // returns blur drawable if api >= 17. returns original drawable if not. 
        @Nullable
        public static Drawable applyBlur(Drawable drawable, Context context) {
            if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.JELLY_BEAN_MR1) {
                Bitmap fromDrawable = drawableToBitmap(drawable);
                int width = Math.round(fromDrawable.getWidth() * 0.8f);
                int height = Math.round(fromDrawable.getHeight() * 0.8f);

                Bitmap inBitmap = Bitmap.createScaledBitmap(fromDrawable, width, height, false);
                Bitmap outBitmap = Bitmap.createBitmap(inBitmap);

                RenderScript renderScript = RenderScript.create(context);
                ScriptIntrinsicBlur blur = ScriptIntrinsicBlur.create(renderScript, Element.U8_4(renderScript));

                Allocation in = Allocation.createFromBitmap(renderScript, inBitmap);
                Allocation out = Allocation.createFromBitmap(renderScript, outBitmap);

                blur.setRadius(BLUR_RADIUS);
                blur.setInput(in);
                blur.forEach(out);

                out.copyTo(outBitmap);
                renderScript.destroy();

                return new BitmapDrawable(context.getResources(), outBitmap);
            }
            return drawable;
        }

        // returns blur bitmap if api >= 17. returns original bitmap if not. 
        @Nullable
        public static Bitmap applyBlur(Bitmap bitmap, Context context) {
            if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.JELLY_BEAN_MR1) {
                RenderScript rs = RenderScript.create(context);
                Bitmap bitmapCopy;
                int width = Math.round(bitmap.getWidth() * 0.8f);
                int height = Math.round(bitmap.getHeight() * 0.8f);

                if (bitmap.getConfig() == Bitmap.Config.ARGB_8888) {
                    bitmapCopy = bitmap;
                } else {
                    bitmapCopy = bitmap.copy(Bitmap.Config.ARGB_8888, true);
                }

                Bitmap outBitmap = Bitmap.createBitmap(width, height, bitmapCopy.getConfig());

                Allocation in = Allocation.createFromBitmap(rs, bitmapCopy,
                        Allocation.MipmapControl.MIPMAP_NONE,
                        Allocation.USAGE_SCRIPT);
                Allocation out = Allocation.createTyped(rs, in.getType());

                ScriptIntrinsicBlur blur = ScriptIntrinsicBlur.create(rs, out.getElement());
                blur.setRadius(BLUR_RADIUS);
                blur.setInput(in);
                blur.forEach(out);

                out.copyTo(bitmap);
                rs.destroy();

                return outBitmap;
            }
            return bitmap;
        }
    }