make CIFilter API available

juliansteenbakker · Oct 18, 2024 · ebae80d · ebae80d
1 parent c1313ef
commit ebae80d
Showing 1 changed file with 11 additions and 2 deletions.
diff --git a/ios/Classes/MobileScanner.swift b/ios/Classes/MobileScanner.swift
@@ -482,8 +482,17 @@ public class MobileScanner: NSObject, AVCaptureVideoDataOutputSampleBufferDelega
 
     private func invertInputImage(image: UIImage) -> UIImage {
         let ciImage = CIImage(image: image)
-        let filter = CIFilter.colorInvert()
-        filter?.setValue(ciImage, forKey: kCIInputImageKey)
+
+        let filter: CIFilter?
+
+        if #available(iOS 13.0, *) {
+            filter = CIFilter.colorInvert()
+            filter?.setValue(ciImage, forKey: kCIInputImageKey)
+        } else {
+            filter = CIFilter(name: "CIColorInvert")
+            filter?.setValue(ciImage, forKey: kCIInputImageKey)
+        }
+
         let outputImage = filter?.outputImage
         let cgImage = convertCIImageToCGImage(inputImage: outputImage!)