Custom Filter Code Help

Hi


Hope all is well?


I'm trying to make my own app and have run into my first issue haha


I'm a cinematographer that makes LUTS for cinematographers for many different camera platforms. I also make them for iPhone users so I want to create my own app so they can use them in the phone/app rather then on a computer.


Long story short, LUTS are kinda like filters, Instagram filters etc.....But instead of applying a typical Apple filter like CISepiaTone etc


When the users applies the filters from the app, I need the filter to be applied from a png file not a Apple filter


I know it's possible but I can't seem to find a code that works.


So basically, users import a picture/video from their photo library, they then apply the filter and save it to their phone.


I just need it to apply my own filters from png files not a CI Filter


This is my code so far:


import UIKit

class ViewController: UIViewController, UINavigationControllerDelegate, UIImagePickerControllerDelegate {


@IBOutlet weak var imageView: UIImageView!




override func viewDidLoad() {

super.viewDidLoad()

/

}




func importImage(_ sender: Any) {

let image = UIImagePickerController()

image.delegate = self

image.sourceType = UIImagePickerControllerSourceType.photoLibrary

image.allowsEditing = true

self.present(image, animated: true)

{

/

}

}


func imagePickerController(_ picker: UIImagePickerController, didFinishPickingMediaWithInfo info: [String : Any])

{

if let image = info[UIImagePickerControllerOriginalImage] as? UIImage

{

imageView.image = image

}

else

{

/

}

self.dismiss(animated: true, completion: nil)

}



func filterAction(_ sender: Any) {

guard let image = self.imageView.image?.cgImage else { return }

let openGLContext = EAGLContext(api: .openGLES3)

let context = CIContext(eaglContext: openGLContext!)

let ciImage = CIImage(cgImage: image)

let filter = CIFilter(name: "CISepiaTone")

filter?.setValue(ciImage, forKey: kCIInputImageKey)

filter?.setValue(1, forKey: kCIInputIntensityKey)

if let output = filter?.value(forKey: kCIOutputImageKey) as? CIImage {

self.imageView?.image = UIImage(cgImage: context.createCGImage(output, from: output.extent)!)

}

/

}


}


so the last filter action I need to change from a CI filter to filter with my png file


Any ideas? im using Xcode 8.2.1 with Swift


Please email me here danieljohnpeters@yahoo.com


Many thanks in advance

I have same issue, did you find any way if yes then please share us some detail

Custom Filter Code Help
 
 
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