concurrency17.swift

let imageProcessingQueue = DispatchQueue(label: "com.besher.image-processing")

func processImageAsync(data: Data, completion: @escaping (UIImage?) -> Void) {
    guard let image = UIImage(data: data) else {
        completion(nil)
        return
    }

    imageProcessingQueue.async {
        let processedImage =  self.upscaleAndFilter(image: image)
        completion(processedImage)
    }
}