react-native-vision-camera/package/ios/CameraDevicesManager.swift
2023-09-27 12:51:38 +02:00

92 lines
2.9 KiB
Swift

//
// CameraDevicesManager.swift
// VisionCamera
//
// Created by Marc Rousavy on 19.09.23.
// Copyright © 2023 mrousavy. All rights reserved.
//
import AVFoundation
import Foundation
@objc(CameraDevicesManager)
class CameraDevicesManager: RCTEventEmitter {
private let discoverySession = AVCaptureDevice.DiscoverySession(deviceTypes: getAllDeviceTypes(),
mediaType: .video,
position: .unspecified)
private var observer: NSKeyValueObservation?
private let devicesChangedEventName = "CameraDevicesChanged"
override init() {
super.init()
observer = discoverySession.observe(\.devices) { _, _ in
self.sendEvent(withName: self.devicesChangedEventName, body: self.getDevicesJson())
}
}
override func invalidate() {
observer?.invalidate()
}
override func supportedEvents() -> [String]! {
return [devicesChangedEventName]
}
override class func requiresMainQueueSetup() -> Bool {
return false
}
override func constantsToExport() -> [AnyHashable: Any]! {
let devices = getDevicesJson()
let preferredDevice: [String: Any]?
// TODO: Remove this #if once Xcode 15 is rolled out
#if swift(>=5.9)
if #available(iOS 17.0, *),
let userPreferred = AVCaptureDevice.userPreferredCamera {
preferredDevice = userPreferred.toDictionary()
} else {
preferredDevice = devices.first
}
#else
preferredDevice = devices.first
#endif
return [
"availableCameraDevices": devices,
"userPreferredCameraDevice": preferredDevice as Any,
]
}
private func getDevicesJson() -> [[String: Any]] {
return discoverySession.devices.map {
return $0.toDictionary()
}
}
private static func getAllDeviceTypes() -> [AVCaptureDevice.DeviceType] {
var deviceTypes: [AVCaptureDevice.DeviceType] = []
deviceTypes.append(.builtInDualCamera)
deviceTypes.append(.builtInWideAngleCamera)
deviceTypes.append(.builtInTelephotoCamera)
deviceTypes.append(.builtInTrueDepthCamera)
if #available(iOS 13.0, *) {
deviceTypes.append(.builtInTripleCamera)
deviceTypes.append(.builtInDualWideCamera)
deviceTypes.append(.builtInUltraWideCamera)
}
if #available(iOS 15.4, *) {
deviceTypes.append(.builtInLiDARDepthCamera)
}
// iOS 17 specifics:
// This is only reported if `NSCameraUseExternalDeviceType` is set to true in Info.plist,
// otherwise external devices are just reported as wide-angle-cameras
// deviceTypes.append(.external)
// This is only reported if `NSCameraUseContinuityCameraDeviceType` is set to true in Info.plist,
// otherwise continuity camera devices are just reported as wide-angle-cameras
// deviceTypes.append(.continuityCamera)
return deviceTypes
}
}