BeautyCamera

gpuImage = GPUImage(this)
gpuImage?.setGLSurfaceView(surfaceView)

magicFilterGroup = GPUImageFilterGroup()
magicFilterGroup?.addFilter(GPUImageBeautyFilter())

noMagicFilterGroup = GPUImageFilterGroup()
noMagicFilterGroup?.addFilter(GPUImageFilter())

// Установка фильтра
gpuImage?.setFilter(if (isInMagic) magicFilterGroup else noMagicFilterGroup)

<android.opengl.GLSurfaceView
        android:id="@+id/surfaceView"
        android:layout_width="match_parent"
        android:layout_height="match_parent"/>

parameters.setPictureSize(pictureSize.width, pictureSize.height)

parameters.setPreviewSize(closelySize.width, closelySize.height)

// Непрерывная фокусировка
if (parameters.supportedFocusModes.contains(Camera.Parameters.FOCUS_MODE_CONTINUOUS_PICTURE)) {
    parameters.focusMode = Camera.Parameters.FOCUS_MODE_CONTINUOUS_PICTURE
}

// Водяной знак имеет разный размер при разных разрешениях (пока не решено)
private fun getView2Bitmap(): Bitmap {
    ll_waterMarker!!.isDrawingCacheEnabled = true
    var waterBitmapCache = ll_waterMarker.drawingCache
    var waterBitmap = Bitmap.createBitmap(waterBitmapCache, 0, 0, ll_waterMarker.width, ll_waterMarker.height)
    ll_waterMarker.destroyDrawingCache()
    var oriBitmap = (iv_img.drawable as BitmapDrawable).bitmap
    var newb = Bitmap.createBitmap(oriBitmap.width, oriBitmap.height, Bitmap.Config.ARGB_8888);
    var canvas = Canvas(newb)
    canvas.drawBitmap(oriBitmap, 0f, 0f, null)
    canvas.drawBitmap(waterBitmap, 0f, (oriBitmap.height - waterBitmap.height).toFloat() - SizeUtil.dp2px(this, 40f), null)
    canvas.save(Canvas.ALL_SAVE_FLAG);
    canvas.restore();
    return newb
}

// Обрезка layout для сохранения фотографии, будет чёрная рамка
private fun getScreenPhoto(waterPhoto: RelativeLayout?): Bitmap {
    waterPhoto!!.isDrawingCacheEnabled = true
    waterPhoto.buildDrawingCache()
    var bitmap: Bitmap? = waterPhoto.drawingCache
    val width = waterPhoto.width
    val height = waterPhoto.height
    val bitmap1 = Bitmap.createBitmap(bitmap!!, 0, 0, width, height)
    waterPhoto.destroyDrawingCache()
return bitmap1
}