android.renderscript.ScriptIntrinsicBlur Java Examples

@RequiresApi(api = Build.VERSION_CODES.JELLY_BEAN_MR1)
public static Bitmap blur(UQI uqi, Bitmap image) {
    int width = Math.round(image.getWidth() * BITMAP_SCALE);
    int height = Math.round(image.getHeight() * BITMAP_SCALE);

    Bitmap inputBitmap = Bitmap.createScaledBitmap(image, width, height, false);
    Bitmap outputBitmap = Bitmap.createBitmap(inputBitmap);

    RenderScript rs = RenderScript.create(uqi.getContext());
    ScriptIntrinsicBlur theIntrinsic = ScriptIntrinsicBlur.create(rs, Element.U8_4(rs));
    Allocation tmpIn = Allocation.createFromBitmap(rs, inputBitmap);
    Allocation tmpOut = Allocation.createFromBitmap(rs, outputBitmap);
    theIntrinsic.setRadius(BLUR_RADIUS);
    theIntrinsic.setInput(tmpIn);
    theIntrinsic.forEach(tmpOut);
    tmpOut.copyTo(outputBitmap);

    return outputBitmap;
}
 

public static Drawable createBlurredImageFromBitmap(Bitmap bitmap, Context context, int inSampleSize) {
    if (android.os.Build.VERSION.SDK_INT >= android.os.Build.VERSION_CODES.JELLY_BEAN_MR1) {
        RenderScript rs = RenderScript.create(context);
        final BitmapFactory.Options options = new BitmapFactory.Options();
        options.inSampleSize = inSampleSize;

        ByteArrayOutputStream stream = new ByteArrayOutputStream();
        bitmap.compress(Bitmap.CompressFormat.JPEG, 100, stream);
        byte[] imageInByte = stream.toByteArray();
        ByteArrayInputStream bis = new ByteArrayInputStream(imageInByte);
        Bitmap blurTemplate = BitmapFactory.decodeStream(bis, null, options);

        final Allocation input = Allocation.createFromBitmap(rs, blurTemplate);
        final Allocation output = Allocation.createTyped(rs, input.getType());
        final ScriptIntrinsicBlur script;
        script = ScriptIntrinsicBlur.create(rs, Element.U8_4(rs));
        script.setRadius(8f);
        script.setInput(input);
        script.forEach(output);
        output.copyTo(blurTemplate);
        return new BitmapDrawable(context.getResources(), blurTemplate);
    }
    return null;
}
 

/**
 * Applies a blur to a {@link Bitmap}.
 */
@TargetApi(Build.VERSION_CODES.JELLY_BEAN_MR1)
public static Bitmap fastBlur(Context mContext, Bitmap sentBitmap, final int radius) {
    if (null == rs) {
        rs = RenderScript.create(mContext);
    }

    final Allocation in = Allocation.createFromBitmap(rs, sentBitmap,
            Allocation.MipmapControl.MIPMAP_NONE, Allocation.USAGE_SCRIPT);
    final Allocation out = Allocation.createTyped(rs, in.getType());
    final ScriptIntrinsicBlur script = ScriptIntrinsicBlur.create(rs, Element.U8_4(rs));
    script.setRadius(radius);
    script.setInput(in);
    script.forEach(out);
    out.copyTo(sentBitmap);
    return (sentBitmap);
}
 

@Override
public Bitmap transform(Bitmap bitmap) {
    // Create another bitmap that will hold the results of the filter.
    Bitmap blurredBitmap = Bitmap.createBitmap(bitmap);

    // Allocate memory for Renderscript to work with
    Allocation input = Allocation.createFromBitmap(rs, bitmap, Allocation.MipmapControl.MIPMAP_FULL, Allocation.USAGE_SHARED);
    Allocation output = Allocation.createTyped(rs, input.getType());

    // 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(20);

    // Start the ScriptIntrinisicBlur
    script.forEach(output);

    // Copy the output to the blurred bitmap
    output.copyTo(blurredBitmap);

    bitmap.recycle();

    return blurredBitmap;
}
 

/**
 * 高斯模糊
 */
public static Bitmap stackBlur(Bitmap srcBitmap) {
    if (srcBitmap == null) return null;
    RenderScript rs = RenderScript.create(MApplication.getInstance());
    Bitmap blurredBitmap = srcBitmap.copy(Bitmap.Config.ARGB_8888, true);

    //分配用于渲染脚本的内存
    Allocation input = Allocation.createFromBitmap(rs, blurredBitmap, Allocation.MipmapControl.MIPMAP_FULL, Allocation.USAGE_SHARED);
    Allocation output = Allocation.createTyped(rs, input.getType());

    //加载我们想要使用的特定脚本的实例。
    ScriptIntrinsicBlur script = ScriptIntrinsicBlur.create(rs, Element.U8_4(rs));
    script.setInput(input);

    //设置模糊半径
    script.setRadius(8);

    //启动 ScriptIntrinsicBlur
    script.forEach(output);

    //将输出复制到模糊的位图
    output.copyTo(blurredBitmap);

    return blurredBitmap;
}
 

@TargetApi(Build.VERSION_CODES.JELLY_BEAN_MR1)
private static Bitmap blurBitmap(Bitmap src, float blurRadius, Context context) {
    RenderScript rs = RenderScript.create(context);
    Bitmap.Config conf = Bitmap.Config.ARGB_8888;
    Bitmap blurredBitmap = Bitmap.createBitmap(src.getWidth(), src.getHeight(), conf);

    final Allocation input = Allocation.createFromBitmap(rs, src, Allocation.MipmapControl.MIPMAP_NONE, Allocation.USAGE_SCRIPT);
    final Allocation output = Allocation.createTyped(rs, input.getType());

    final ScriptIntrinsicBlur script = ScriptIntrinsicBlur.create(rs, Element.U8_4(rs));
    script.setRadius(blurRadius);
    script.setInput(input);
    script.forEach(output);
    output.copyTo(blurredBitmap);
    return blurredBitmap;
}
 

@Override public Bitmap transform(Bitmap source) {
  Bitmap original = source;
  Bitmap blurred;
  blurred = Bitmap.createBitmap(original);

  RenderScript rs = RenderScript.create(context);

  Allocation input =
      Allocation.createFromBitmap(rs, original, Allocation.MipmapControl.MIPMAP_FULL,
          Allocation.USAGE_SCRIPT);
  Allocation output = Allocation.createTyped(rs, input.getType());

  ScriptIntrinsicBlur script = ScriptIntrinsicBlur.create(rs, Element.U8_4(rs));
  script.setInput(input);
  script.setRadius(RADIUS);
  script.forEach(output);

  output.copyTo(blurred);
  source.recycle();
  return blurred;
}
 

/**
 * Applies a blur to a {@link Bitmap}.
 */
@TargetApi(Build.VERSION_CODES.JELLY_BEAN_MR1)
public static Bitmap fastBlur(Context mContext, Bitmap sentBitmap, final int radius) {
    if (null == rs) {
        rs = RenderScript.create(mContext);
    }

    final Allocation in = Allocation.createFromBitmap(rs, sentBitmap,
            Allocation.MipmapControl.MIPMAP_NONE, Allocation.USAGE_SCRIPT);
    final Allocation out = Allocation.createTyped(rs, in.getType());
    final ScriptIntrinsicBlur script = ScriptIntrinsicBlur.create(rs, Element.U8_4(rs));
    script.setRadius(radius);
    script.setInput(in);
    script.forEach(out);
    out.copyTo(sentBitmap);
    return (sentBitmap);
}
 

public static Bitmap apply(Context context, Bitmap sentBitmap, int radius) {
    final Bitmap bitmap = sentBitmap.copy(sentBitmap.getConfig(), true);
    final RenderScript rs = RenderScript.create(context);
    final Allocation input = Allocation.createFromBitmap(rs, sentBitmap, Allocation.MipmapControl.MIPMAP_NONE, Allocation.USAGE_SCRIPT);
    final Allocation output = Allocation.createTyped(rs, input.getType());
    final ScriptIntrinsicBlur script = ScriptIntrinsicBlur.create(rs, Element.U8_4(rs));

    script.setRadius(radius);
    script.setInput(input);
    script.forEach(output);
    output.copyTo(bitmap);

    sentBitmap.recycle();
    rs.destroy();
    input.destroy();
    output.destroy();
    script.destroy();

    return bitmap;
}
 

/**
 * 高斯模糊
 */
public static Bitmap stackBlur(Bitmap srcBitmap) {
    if (srcBitmap == null) return null;
    RenderScript rs = RenderScript.create(MApplication.getInstance());
    Bitmap blurredBitmap = srcBitmap.copy(Bitmap.Config.ARGB_8888, true);

    //分配用于渲染脚本的内存
    Allocation input = Allocation.createFromBitmap(rs, blurredBitmap, Allocation.MipmapControl.MIPMAP_FULL, Allocation.USAGE_SHARED);
    Allocation output = Allocation.createTyped(rs, input.getType());

    //加载我们想要使用的特定脚本的实例。
    ScriptIntrinsicBlur script = ScriptIntrinsicBlur.create(rs, Element.U8_4(rs));
    script.setInput(input);

    //设置模糊半径
    script.setRadius(8);

    //启动 ScriptIntrinsicBlur
    script.forEach(output);

    //将输出复制到模糊的位图
    output.copyTo(blurredBitmap);

    return blurredBitmap;
}
 

public static Bitmap apply(Context context, Bitmap sentBitmap, int radius) {
    final Bitmap bitmap = sentBitmap.copy(sentBitmap.getConfig(), true);
    final RenderScript rs = RenderScript.create(context);
    final Allocation input = Allocation.createFromBitmap(rs, sentBitmap, Allocation.MipmapControl.MIPMAP_NONE, Allocation.USAGE_SCRIPT);
    final Allocation output = Allocation.createTyped(rs, input.getType());
    final ScriptIntrinsicBlur script = ScriptIntrinsicBlur.create(rs, Element.U8_4(rs));

    script.setRadius(radius);
    script.setInput(input);
    script.forEach(output);
    output.copyTo(bitmap);

    sentBitmap.recycle();
    rs.destroy();
    input.destroy();
    output.destroy();
    script.destroy();

    return bitmap;
}
 

@Override
protected Bitmap transform(BitmapPool pool, Bitmap toTransform, int outWidth, int outHeight) {
  Matrix scaleMatrix = new Matrix();
  scaleMatrix.setScale(bitmapScaleFactor, bitmapScaleFactor);

  Bitmap              blurredBitmap = Bitmap.createBitmap(toTransform, 0, 0, outWidth, outHeight, scaleMatrix, true);
  Allocation          input         = Allocation.createFromBitmap(rs, blurredBitmap, Allocation.MipmapControl.MIPMAP_FULL, Allocation.USAGE_SHARED);
  Allocation          output        = Allocation.createTyped(rs, input.getType());
  ScriptIntrinsicBlur script        = ScriptIntrinsicBlur.create(rs, Element.U8_4(rs));

  script.setInput(input);
  script.setRadius(blurRadius);
  script.forEach(output);
  output.copyTo(blurredBitmap);

  return blurredBitmap;
}
 

@Override
public Bitmap transform(Bitmap bitmap) {
    // Create another bitmap that will hold the results of the filter.
    Bitmap blurredBitmap = Bitmap.createBitmap(bitmap);

    // Allocate memory for Renderscript to work with
    Allocation input = Allocation.createFromBitmap(rs, bitmap, Allocation.MipmapControl.MIPMAP_FULL, Allocation.USAGE_SHARED);
    Allocation output = Allocation.createTyped(rs, input.getType());

    // 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(20);

    // Start the ScriptIntrinisicBlur
    script.forEach(output);

    // Copy the output to the blurred bitmap
    output.copyTo(blurredBitmap);

    bitmap.recycle();

    return blurredBitmap;
}
 

@Override
public Bitmap transform(Bitmap in) {
    Bitmap out = Bitmap.createBitmap(in.getWidth(), in.getHeight(), in.getConfig());
    out.setDensity(in.getDensity());

    RenderScript rs = RenderScript.create(context);
    Allocation input = Allocation.createFromBitmap(rs, in);
    Allocation output = Allocation.createFromBitmap(rs, out);

    ScriptIntrinsicBlur script = ScriptIntrinsicBlur.create(rs, getElement(in, rs));
    script.setInput(input);
    script.setRadius(20);
    script.forEach(output);

    output.copyTo(out);
    in.recycle();

    rs.destroy();

    return out;
}
 

@Override
public Bitmap transform(Bitmap bitmap) {
    // Create another bitmap that will hold the results of the filter.
    Bitmap blurredBitmap = Bitmap.createBitmap(bitmap);

    // Allocate memory for Renderscript to work with
    Allocation input = Allocation.createFromBitmap(rs, bitmap, Allocation.MipmapControl.MIPMAP_FULL, Allocation.USAGE_SHARED);
    Allocation output = Allocation.createTyped(rs, input.getType());

    // 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(20);

    // Start the ScriptIntrinisicBlur
    script.forEach(output);

    // Copy the output to the blurred bitmap
    output.copyTo(blurredBitmap);

    bitmap.recycle();

    return blurredBitmap;
}
 

@Override
public Bitmap transform(Bitmap bitmap) {
    // Create another bitmap that will hold the results of the filter.
    Bitmap blurredBitmap = Bitmap.createBitmap(bitmap);

    // Allocate memory for Renderscript to work with
    Allocation input = Allocation.createFromBitmap(rs, bitmap, Allocation.MipmapControl.MIPMAP_FULL, Allocation.USAGE_SHARED);
    Allocation output = Allocation.createTyped(rs, input.getType());

    // 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(20);

    // Start the ScriptIntrinisicBlur
    script.forEach(output);

    // Copy the output to the blurred bitmap
    output.copyTo(blurredBitmap);

    bitmap.recycle();

    return blurredBitmap;
}
 

/**
 * renderScript模糊图片
 * <p>API大于17</p>
 *
 * @param src     源图片
 * @param radius  模糊半径(0...25)
 * @return 模糊后的图片
 */
@TargetApi(Build.VERSION_CODES.JELLY_BEAN_MR1)
public static Bitmap renderScriptBlur(Bitmap src, @FloatRange(from = 0, to = 25, fromInclusive = false) float radius) {
    if (isEmptyBitmap(src)) return null;
    RenderScript rs = null;
    try {
        rs = RenderScript.create(Utils.getContext());
        rs.setMessageHandler(new RenderScript.RSMessageHandler());
        Allocation input = Allocation.createFromBitmap(rs, src, Allocation.MipmapControl.MIPMAP_NONE, Allocation
                .USAGE_SCRIPT);
        Allocation output = Allocation.createTyped(rs, input.getType());
        ScriptIntrinsicBlur blurScript = ScriptIntrinsicBlur.create(rs, Element.U8_4(rs));
        blurScript.setInput(input);
        blurScript.setRadius(radius);
        blurScript.forEach(output);
        output.copyTo(src);
    } finally {
        if (rs != null) {
            rs.destroy();
        }
    }
    return src;
}
 

@Override
public Bitmap transform(Bitmap bitmap) {
    // Create another bitmap that will hold the results of the filter.
    Bitmap blurredBitmap = Bitmap.createBitmap(bitmap);

    // Allocate memory for Renderscript to work with
    Allocation input = Allocation.createFromBitmap(rs, bitmap, Allocation.MipmapControl.MIPMAP_FULL, Allocation.USAGE_SHARED);
    Allocation output = Allocation.createTyped(rs, input.getType());

    // 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(20);

    // Start the ScriptIntrinisicBlur
    script.forEach(output);

    // Copy the output to the blurred bitmap
    output.copyTo(blurredBitmap);

    bitmap.recycle();

    return blurredBitmap;
}
 

/**
 * 获取模糊的图片
 *
 * @param context 上下文对象
 * @param bitmap  传入的bitmap图片
 */
private Bitmap blurBitmap(Context context, Bitmap bitmap) {
    //用需要创建高斯模糊bitmap创建一个空的bitmap
    Bitmap outBitmap = Bitmap.createBitmap(bitmap.getWidth(), bitmap.getHeight(), Bitmap.Config.ARGB_8888);
    // 初始化Renderscript，该类提供了RenderScript context，创建其他RS类之前必须先创建这个类，其控制RenderScript的初始化，资源管理及释放
    RenderScript rs = RenderScript.create(context);
    // 创建一个模糊效果的RenderScript的工具对象
    ScriptIntrinsicBlur blurScript = ScriptIntrinsicBlur.create(rs, Element.U8_4(rs));
    // 由于RenderScript并没有使用VM来分配内存,所以需要使用Allocation类来创建和分配内存空间。
    // 创建Allocation对象的时候其实内存是空的,需要使用copyTo()将数据填充进去。
    Allocation allIn = Allocation.createFromBitmap(rs, bitmap);
    Allocation allOut = Allocation.createFromBitmap(rs, outBitmap);
    //设定模糊度(注：radius最大只能设置25f)
    blurScript.setRadius(BLUR_RADIUS);
    // 设置blurScript对象的输入内存
    blurScript.setInput(allIn);
    // 将输出数据保存到输出内存中
    blurScript.forEach(allOut);
    // 将数据填充到Allocation中
    allOut.copyTo(outBitmap);
    rs.destroy();
    return outBitmap;
}
 

@Override
public Bitmap transform(Bitmap bitmap) {
    // Create another bitmap that will hold the results of the filter.
    Bitmap blurredBitmap = Bitmap.createBitmap(bitmap);

    // Allocate memory for Renderscript to work with
    Allocation input = Allocation.createFromBitmap(rs, bitmap, Allocation.MipmapControl.MIPMAP_FULL, Allocation.USAGE_SHARED);
    Allocation output = Allocation.createTyped(rs, input.getType());

    // 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(20);

    // Start the ScriptIntrinisicBlur
    script.forEach(output);

    // Copy the output to the blurred bitmap
    output.copyTo(blurredBitmap);

    bitmap.recycle();

    return blurredBitmap;
}
 

@Override
public Bitmap transform(Bitmap bitmap) {
    // Create another bitmap that will hold the results of the filter.
    Bitmap blurredBitmap = Bitmap.createBitmap(bitmap);

    // Allocate memory for Renderscript to work with
    Allocation input = Allocation.createFromBitmap(rs, bitmap, Allocation.MipmapControl.MIPMAP_FULL, Allocation.USAGE_SHARED);
    Allocation output = Allocation.createTyped(rs, input.getType());

    // 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(20);

    // Start the ScriptIntrinisicBlur
    script.forEach(output);

    // Copy the output to the blurred bitmap
    output.copyTo(blurredBitmap);

    bitmap.recycle();

    return blurredBitmap;
}
 

/**
 * 有些手机不支持....so  不能用
 *
 * @param sentBitmap
 * @param radius
 */
private void RenderScriptblur(Bitmap sentBitmap, int radius) {

    long start = System.currentTimeMillis();

    Bitmap bitmap = sentBitmap.copy(sentBitmap.getConfig(), true);

    final RenderScript rs = RenderScript.create(FastBlurActivity.this);
    final Allocation input = Allocation.createFromBitmap(rs, sentBitmap, Allocation.MipmapControl.MIPMAP_NONE,
            Allocation.USAGE_SCRIPT);
    final Allocation output = Allocation.createTyped(rs, input.getType());
    final ScriptIntrinsicBlur script = ScriptIntrinsicBlur.create(rs, Element.U8_4(rs));
    script.setRadius(radius /* e.g. 3.f */);
    script.setInput(input);
    script.forEach(output);
    output.copyTo(bitmap);

    mIvBlur.setImageBitmap(bitmap);
    long end = System.currentTimeMillis();

    Log.v(TAG, "fastblur time:" + (end - start));
}
 

/**
 * 使用 RenderScript 模糊图片
 * PS:此方法只能在 SDK API 17 以上使用
 *
 * @param context 上下文对象
 * @param bitmap 需要模糊的bitmap
 * @param scale 模糊的比例因数
 * @param radius 模糊半径
 */
@TargetApi(Build.VERSION_CODES.JELLY_BEAN_MR1)
public static Bitmap rsBlurBitmp(Context context, Bitmap bitmap, int scale, float radius) {
    // 创建一个新的压缩过的 Bitmap
    Bitmap overlay = VMBitmap.compressBitmapByScale(bitmap, scale);

    RenderScript rs = null;
    try {
        rs = RenderScript.create(context);
        rs.setMessageHandler(new RenderScript.RSMessageHandler());
        Allocation input = Allocation.createFromBitmap(rs, overlay, 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(overlay);
    } finally {
        if (rs != null) {
            rs.destroy();
        }
    }
    return overlay;
}
 

public static Bitmap blurBitmap(Context context, Bitmap bitmap) {
    if (context == null || bitmap == null) return null;

    Bitmap blurredBitmap;
    try {
        blurredBitmap = Bitmap.createBitmap(bitmap);
    } catch (OutOfMemoryError e) {
        return null;
    }

    RenderScript renderScript = RenderScript.create(context);
    Allocation input = Allocation.createFromBitmap(renderScript, bitmap, Allocation.MipmapControl.MIPMAP_FULL, Allocation.USAGE_SCRIPT);
    Allocation output = Allocation.createTyped(renderScript, input.getType());
    ScriptIntrinsicBlur script = ScriptIntrinsicBlur.create(renderScript, Element.U8_4(renderScript));

    script.setInput(input);
    script.setRadius(20);

    script.forEach(output);
    output.copyTo(blurredBitmap);

    return blurredBitmap;
}
 

@RequiresApi(17)
private static @NonNull Bitmap blur(Bitmap bitmap, Context context) {
  Point  previewSize = scaleKeepingAspectRatio(new Point(bitmap.getWidth(), bitmap.getHeight()), PREVIEW_DIMENSION_LIMIT);
  Point  blurSize    = scaleKeepingAspectRatio(new Point(previewSize.x / 2, previewSize.y / 2 ), MAX_BLUR_DIMENSION);
  Bitmap small       = BitmapUtil.createScaledBitmap(bitmap, blurSize.x, blurSize.y);

  Log.d(TAG, "Bitmap: " + bitmap.getWidth() + "x" + bitmap.getHeight() + ", Blur: " + blurSize.x + "x" + blurSize.y);

  RenderScript        rs     = RenderScript.create(context);
  Allocation          input  = Allocation.createFromBitmap(rs, small);
  Allocation          output = Allocation.createTyped(rs, input.getType());
  ScriptIntrinsicBlur script = ScriptIntrinsicBlur.create(rs, Element.U8_4(rs));

  script.setRadius(25f);
  script.setInput(input);
  script.forEach(output);

  Bitmap blurred = Bitmap.createBitmap(small.getWidth(), small.getHeight(), small.getConfig());
  output.copyTo(blurred);
  return blurred;
}
 

private static Bitmap blur(Context context, Bitmap source, float radius){
    RenderScript renderScript =  RenderScript.create(context);

    final Allocation input = Allocation.createFromBitmap(renderScript, source);
    final Allocation output = Allocation.createTyped(renderScript,input.getType());

    ScriptIntrinsicBlur scriptIntrinsicBlur = ScriptIntrinsicBlur.create(
            renderScript,
            Element.U8_4(renderScript)
    );
    scriptIntrinsicBlur.setInput(input);
    scriptIntrinsicBlur.setRadius(radius);
    scriptIntrinsicBlur.forEach(output);
    output.copyTo(source);
    renderScript.destroy();

    return source;
}
 

private static Bitmap blur_real(Context context, Bitmap image) {
    int width = Math.round(image.getWidth() * BITMAP_SCALE);
    int height = Math.round(image.getHeight() * BITMAP_SCALE);

    Bitmap inputBitmap = Bitmap.createScaledBitmap(image, width, height, false);
    Bitmap outputBitmap = Bitmap.createBitmap(inputBitmap);

    RenderScript rs = RenderScript.create(context);
    ScriptIntrinsicBlur theIntrinsic = ScriptIntrinsicBlur.create(rs, Element.U8_4(rs));
    Allocation tmpIn = Allocation.createFromBitmap(rs, inputBitmap);
    Allocation tmpOut = Allocation.createFromBitmap(rs, outputBitmap);
    theIntrinsic.setRadius(BLUR_RADIUS);
    theIntrinsic.setInput(tmpIn);
    theIntrinsic.forEach(tmpOut);
    tmpOut.copyTo(outputBitmap);

    return outputBitmap;
}
 

public static Bitmap blurBitmap(Context context, Bitmap bmp, float radius) {
    Bitmap out = Bitmap.createBitmap(bmp);
    RenderScript rs = RenderScript.create(context);
    radius = Math.min(Math.max(radius, 0), 25);

    Allocation input = Allocation.createFromBitmap(
            rs, bmp, MipmapControl.MIPMAP_NONE, Allocation.USAGE_SCRIPT);
    Allocation output = Allocation.createTyped(rs, input.getType());

    ScriptIntrinsicBlur script = ScriptIntrinsicBlur.create(rs, Element.U8_4(rs));
    script.setInput(input);
    script.setRadius(radius);
    script.forEach(output);

    output.copyTo(out);

    rs.destroy();
    return out;
}
 

private Bitmap blurRenderScript(Bitmap smallBitmap, int radius) {

        int width  = Math.round(smallBitmap.getWidth() * defaultBitmapScale);
        int height = Math.round(smallBitmap.getHeight() * defaultBitmapScale);

        Bitmap inputBitmap  = Bitmap.createScaledBitmap(smallBitmap, width, height, false);
        Bitmap outputBitmap = Bitmap.createBitmap(inputBitmap);

        RenderScript renderScript = RenderScript.create(getContext());
        ScriptIntrinsicBlur theIntrinsic = ScriptIntrinsicBlur.create(renderScript, Element.U8_4(renderScript));
        Allocation tmpIn = Allocation.createFromBitmap(renderScript, inputBitmap);
        Allocation tmpOut = Allocation.createFromBitmap(renderScript, outputBitmap);
        theIntrinsic.setRadius(radius);
        theIntrinsic.setInput(tmpIn);
        theIntrinsic.forEach(tmpOut);
        tmpOut.copyTo(outputBitmap);

        return outputBitmap;
    }
 

private static @NonNull Bitmap blur(Bitmap bitmap, Context context) {
  Point  previewSize = scaleKeepingAspectRatio(new Point(bitmap.getWidth(), bitmap.getHeight()), PREVIEW_DIMENSION_LIMIT);
  Point  blurSize    = scaleKeepingAspectRatio(new Point(previewSize.x / 2, previewSize.y / 2 ), MAX_BLUR_DIMENSION);
  Bitmap small       = BitmapUtil.createScaledBitmap(bitmap, blurSize.x, blurSize.y);

  Log.d(TAG, "Bitmap: " + bitmap.getWidth() + "x" + bitmap.getHeight() + ", Blur: " + blurSize.x + "x" + blurSize.y);

  RenderScript        rs     = RenderScript.create(context);
  Allocation          input  = Allocation.createFromBitmap(rs, small);
  Allocation          output = Allocation.createTyped(rs, input.getType());
  ScriptIntrinsicBlur script = ScriptIntrinsicBlur.create(rs, Element.U8_4(rs));

  script.setRadius(25f);
  script.setInput(input);
  script.forEach(output);

  Bitmap blurred = Bitmap.createBitmap(small.getWidth(), small.getHeight(), small.getConfig());
  output.copyTo(blurred);
  return blurred;
}