content: package com.allyn.lives.utils.blur;
  
  import android.annotation.TargetApi;
  import android.content.Context;
  import android.graphics.Bitmap;
  import android.os.Build;
  import android.renderscript.Allocation;
  import android.renderscript.Element;
  import android.renderscript.RSRuntimeException;
  import android.renderscript.RenderScript;
  import android.renderscript.ScriptIntrinsicBlur;
  
  /**
   * Copyright (C) 2015 Wasabeef
   *
   * Licensed under the Apache License, Version 2.0 (the "License");
   * you may not use this file except in compliance with the License.
   * You may obtain a copy of the License at
   *
   * http://www.apache.org/licenses/LICENSE-2.0
   *
   * Unless required by applicable law or agreed to in writing, software
   * distributed under the License is distributed on an "AS IS" BASIS,
   * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
   * See the License for the specific language governing permissions and
   * limitations under the License.
   */
  public class RSBlur {
  
      @TargetApi(Build.VERSION_CODES.JELLY_BEAN_MR1)
      public static Bitmap blur(Context context, Bitmap bitmap, int radius) throws RSRuntimeException {
          RenderScript rs = null;
          try {
              rs = RenderScript.create(context);
              Allocation input =
                      Allocation.createFromBitmap(rs, bitmap, Allocation.MipmapControl.MIPMAP_NONE,
                              Allocation.USAGE_SCRIPT);
              Allocation output = Allocation.createTyped(rs, input.getType());
              ScriptIntrinsicBlur blur = ScriptIntrinsicBlur.create(rs, Element.U8_4(rs));
  
              blur.setInput(input);
              blur.setRadius(radius);
              blur.forEach(output);
              output.copyTo(bitmap);
          } finally {
              if (rs != null) {
                  rs.destroy();
              }
          }
  
          return bitmap;
      }
  }
  