Vision Barcode Detector (Detectors/BarcodeDetector.swift)

Detects barcodes in identity-document images using Vision, tracking symbology, timeout, and search duration. Reuse for iOS identity verification flows that need barcode presence checks.

// Source: https://github.com/stripe/stripe-ios | License: MIT | Copyright 2011- Stripe, Inc. (https://stripe.com)
// Provided via justclaw.it.com; keep this notice with the code.
//
//  BarcodeDetector.swift
//  StripeIdentity
//
//  Created by Mel Ludowise on 2/25/22.
//  Copyright © 2022 Stripe, Inc. All rights reserved.
//

import Foundation
import Vision

struct BarcodeDetectorOutput: Equatable {
    let hasBarcode: Bool
    let isTimedOut: Bool
    let symbology: VNBarcodeSymbology
    let timeTryingToFindBarcode: TimeInterval
}

extension BarcodeDetectorOutput: VisionBasedDetectorOutput {
    init(
        detector: BarcodeDetector,
        observations: [VNObservation],
        originalImageSize: CGSize
    ) throws {
        let barcodeObservations: [VNBarcodeObservation] = observ

... (truncated -- full source via MCP)