I am trying to load a raw image from a Canon mirrorless camera (these are files with a .CR3 extension) to view in a Swift UI app. It appears that you use the contents of one of these files to create a CIFilter object. However all of the relevant initializers for this object seeem to be deprecated (see here: https://developer.apple.com/documentation/coreimage/cifilter). Is anyone aware of the correct way to load one of these images? This is how I have found to do it currently, however it is using the aforementioned deprecated initializer.

struct ContentView: View {
    @State private var image: Image?
    var body: some View {
        VStack {
            image?
                .resizable()
                .scaledToFit()
        }
        .onAppear(perform: loadImage)
    }
    func loadImage() {
        let path = "/Users/sam/Downloads/8B0A1479.CR3"
        let url = URL(fileURLWithPath: path)
        let data = try! Data(contentsOf: url)
        let filter =  CIFilter(imageData: data)
        let ciImage = (filter?.outputImage)
        let rep = NSCIImageRep(ciImage: ciImage!)
        let nsImage = NSImage(size: rep.size)
        nsImage.addRepresentation(rep)
        image = Image(nsImage: nsImage)
    }
}

Hi. I am in a very similar situation. I also want to load and convert binary and UInt16 data arrays into raw image data. Did you find a different way on how to do this?

I was looking at the RawPhoto tutorials from Apple, which is not very transparent to me in this context, but it might be hidden in there somewhere: https://developer.apple.com/documentation/avfoundation/cameras_and_media_capture/capturing_photos_in_raw_and_apple_proraw_formats

I think we are suppsoed to use this (new?) CIRAWFilter class:

https://developer.apple.com/documentation/coreimage/cirawfilter

This works for me with a Canon raw photo (CR2):

let rawimgpath = "/...path.../IMG_4650.CR2"
let rawimgurl = URL(fileURLWithPath: rawimgpath)

let rawfilter = CIRAWFilter(imageURL: rawimgurl)
let rawimg = rawfilter?.outputImage