File size: 2,681 Bytes
2d8be8f | 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 | // Copyright 2019-2023 Tauri Programme within The Commons Conservancy
// SPDX-License-Identifier: Apache-2.0
// SPDX-License-Identifier: MIT
import AVFoundation
func createCaptureDeviceInput(
cameraDirection: String, backCamera: AVCaptureDevice?, frontCamera: AVCaptureDevice?
) throws
-> AVCaptureDeviceInput
{
var captureDevice: AVCaptureDevice
if cameraDirection == "back" {
if backCamera != nil {
captureDevice = backCamera!
} else {
throw CaptureError.backCameraUnavailable
}
} else {
if frontCamera != nil {
captureDevice = frontCamera!
} else {
throw CaptureError.frontCameraUnavailable
}
}
let captureDeviceInput: AVCaptureDeviceInput
do {
captureDeviceInput = try AVCaptureDeviceInput(device: captureDevice)
} catch let error as NSError {
throw CaptureError.couldNotCaptureInput(error: error)
}
return captureDeviceInput
}
func discoverCaptureDevices() -> [AVCaptureDevice] {
if #available(iOS 13.0, *) {
return AVCaptureDevice.DiscoverySession(
deviceTypes: [
.builtInTripleCamera, .builtInDualCamera, .builtInTelephotoCamera,
.builtInTrueDepthCamera,
.builtInUltraWideCamera, .builtInDualWideCamera, .builtInWideAngleCamera,
], mediaType: .video, position: .unspecified
).devices
} else {
return AVCaptureDevice.DiscoverySession(
deviceTypes: [
.builtInDualCamera, .builtInWideAngleCamera, .builtInTelephotoCamera,
.builtInTrueDepthCamera,
], mediaType: .video, position: .unspecified
).devices
}
}
func formatStringFromMetadata(_ type: AVMetadataObject.ObjectType) -> String {
if #available(iOS 15.4, *) {
if type == .gs1DataBar {
return "GS1_DATA_BAR"
} else if type == .gs1DataBarLimited {
return "GS1_DATA_BAR_LIMITED"
} else if type == .gs1DataBarExpanded {
return "GS1_DATA_BAR_EXPANDED"
}
}
switch type {
case AVMetadataObject.ObjectType.upce:
return "UPC_E"
case AVMetadataObject.ObjectType.ean8:
return "EAN_8"
case AVMetadataObject.ObjectType.ean13:
return "EAN_13"
case AVMetadataObject.ObjectType.code39:
return "CODE_39"
case AVMetadataObject.ObjectType.code93:
return "CODE_93"
case AVMetadataObject.ObjectType.code128:
return "CODE_128"
case AVMetadataObject.ObjectType.interleaved2of5:
return "ITF"
case AVMetadataObject.ObjectType.aztec:
return "AZTEC"
case AVMetadataObject.ObjectType.dataMatrix:
return "DATA_MATRIX"
case AVMetadataObject.ObjectType.pdf417:
return "PDF_417"
case AVMetadataObject.ObjectType.qr:
return "QR_CODE"
default:
return type.rawValue
}
}
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