imp: fix build on macos

+<?xml version="1.0" encoding="UTF-8"?>
+<Workspace
+   version = "1.0">
+   <FileRef
+      location = "group:Runner.xcodeproj">
+   </FileRef>
+   <FileRef
+      location = "group:Pods/Pods.xcodeproj">
+   </FileRef>
+</Workspace>

+<?xml version="1.0" encoding="UTF-8"?>
+<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
+<plist version="1.0">
+<dict>
+	<key>IDEDidComputeMac32BitWarning</key>
+	<true/>
+</dict>
+</plist>

+//
+//  DetectionSpeed.swift
+//  mobile_scanner
+//
+//  Created by Julian Steenbakker on 11/11/2022.
+//
+
+enum DetectionSpeed: Int {
+    case noDuplicates = 0
+    case normal = 1
+    case unrestricted = 2
+}

 import AVFoundation
 import FlutterMacOS
 import Vision
-import UIKit
+import AppKit
 
 public class MobileScannerPlugin: NSObject, FlutterPlugin, FlutterStreamHandler, FlutterTexture, AVCaptureVideoDataOutputSampleBufferDelegate {
     
@@ -25,6 +25,8 @@ public class MobileScannerPlugin: NSObject, FlutterPlugin, FlutterStreamHandler,
     // optional window to limit scan search
     var scanWindow: CGRect?
     
+    var detectionSpeed: DetectionSpeed = DetectionSpeed.noDuplicates
+    
     
 //    var analyzeMode: Int = 0
     var analyzing: Bool = false
@@ -93,20 +95,15 @@ public class MobileScannerPlugin: NSObject, FlutterPlugin, FlutterStreamHandler,
     
     // Gets called when a new image is added to the buffer
     public func captureOutput(_ output: AVCaptureOutput, didOutput sampleBuffer: CMSampleBuffer, from connection: AVCaptureConnection) {
-        i = i + 1;
-        
-        latestBuffer = CMSampleBufferGetImageBuffer(sampleBuffer)
+        guard let imageBuffer = CMSampleBufferGetImageBuffer(sampleBuffer) else {
+            print("Failed to get image buffer from sample buffer.")
+            return
+        }
+        latestBuffer = imageBuffer
         registry.textureFrameAvailable(textureId)
         
-//        switch analyzeMode {
-//        case 1: // barcode
-            
-            // Limit the analyzer because the texture output will freeze otherwise
-            if i / 10 == 1 {
+        if ((detectionSpeed == DetectionSpeed.normal || detectionSpeed == DetectionSpeed.noDuplicates) && i > 10 || detectionSpeed == DetectionSpeed.unrestricted) {
             i = 0
-            } else {
-                return
-            }
             let imageRequestHandler = VNImageRequestHandler(
                 cvPixelBuffer: latestBuffer,
                 orientation: .right)
@@ -116,8 +113,8 @@ public class MobileScannerPlugin: NSObject, FlutterPlugin, FlutterStreamHandler,
                       if error == nil {
                           if let results = request.results as? [VNBarcodeObservation] {
                                 for barcode in results {
-                                if scanWindow != nil {
-                                    let match = isbarCodeInScanWindow(scanWindow!, barcode, buffer!.image)
+                                    if self.scanWindow != nil {
+                                        let match = self.isbarCodeInScanWindow(self.scanWindow!, barcode, self.latestBuffer)
                                         if (!match) {
                                             continue
                                         }
@@ -141,10 +138,9 @@ public class MobileScannerPlugin: NSObject, FlutterPlugin, FlutterStreamHandler,
                 } catch {
                   print(error)
                 }
-
-//        default: // none
-//            break
-//        }
+        } else {
+            i+=1
+        }
     }
     
     func checkPermission(_ call: FlutterMethodCall, _ result: @escaping FlutterResult) {
@@ -188,11 +184,11 @@ public class MobileScannerPlugin: NSObject, FlutterPlugin, FlutterStreamHandler,
         scanWindow = CGRect(x: minX, y: minY, width: width, height: height)
     }
 
-   func isbarCodeInScanWindow(_ scanWindow: CGRect, _ barcode: Barcode, _ inputImage: UIImage) -> Bool {
-        let barcodeBoundingBox = barcode.frame
+    func isbarCodeInScanWindow(_ scanWindow: CGRect, _ barcode: VNBarcodeObservation, _ inputImage: CVImageBuffer) -> Bool {
+       let size = CVImageBufferGetEncodedSize(inputImage)
 
-        let imageWidth = inputImage.size.width;
-        let imageHeight = inputImage.size.height;
+        let imageWidth = size.width;
+        let imageHeight = size.height;
 
         let minX = scanWindow.minX * imageWidth
         let minY = scanWindow.minY * imageHeight
@@ -200,7 +196,7 @@ public class MobileScannerPlugin: NSObject, FlutterPlugin, FlutterStreamHandler,
         let height = scanWindow.height * imageHeight
 
         let scaledScanWindow = CGRect(x: minX, y: minY, width: width, height: height)
-        return scaledScanWindow.contains(barcodeBoundingBox)
+        return scaledScanWindow.contains(barcode.boundingBox)
     }
 
     func start(_ call: FlutterMethodCall, _ result: @escaping FlutterResult) {
@@ -219,6 +215,9 @@ public class MobileScannerPlugin: NSObject, FlutterPlugin, FlutterStreamHandler,
 //        let ratio: Int = argReader.int(key: "ratio")
         let torch: Bool = argReader.bool(key: "torch") ?? false
         let facing: Int = argReader.int(key: "facing") ?? 1
+        let speed: Int = (call.arguments as! Dictionary<String, Any?>)["speed"] as? Int ?? 0
+        
+        detectionSpeed = DetectionSpeed(rawValue: speed)!
 
         // Set the camera to use
         position = facing == 0 ? AVCaptureDevice.Position.front : .back