63 lines
2.1 KiB
Swift
63 lines
2.1 KiB
Swift
//
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// CameraView+Orientation.swift
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// VisionCamera
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//
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// Created by Marc Rousavy on 04.01.22.
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// Copyright © 2022 mrousavy. All rights reserved.
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//
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import Foundation
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import UIKit
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extension CameraView {
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/// Returns the current _interface_ orientation of the main window
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private var windowInterfaceOrientation: UIInterfaceOrientation {
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if #available(iOS 13.0, *) {
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return UIApplication.shared.windows.first?.windowScene?.interfaceOrientation ?? .unknown
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} else {
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return UIApplication.shared.statusBarOrientation
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}
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}
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/// Orientation of the input connection (preview)
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private var inputOrientation: UIInterfaceOrientation {
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return windowInterfaceOrientation
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}
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// Orientation of the output connections (photo, video, frame processor)
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private var outputOrientation: UIInterfaceOrientation {
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if let userOrientation = orientation as String?,
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let parsedOrientation = try? UIInterfaceOrientation(withString: userOrientation) {
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// user is overriding output orientation
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return parsedOrientation
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} else {
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// use same as input orientation
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return inputOrientation
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}
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}
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internal func updateOrientation() {
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// Updates the Orientation for all rotable connections (outputs) as well as for the preview layer
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DispatchQueue.main.async {
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// `windowInterfaceOrientation` and `videoPreviewLayer` should only be accessed from UI thread
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let isMirrored = self.videoDeviceInput?.device.position == .front
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self.videoPreviewLayer.connection?.setInterfaceOrientation(self.inputOrientation)
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let connectionOrientation = self.outputOrientation
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self.cameraQueue.async {
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// Run those updates on cameraQueue since they can be blocking.
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self.captureSession.outputs.forEach { output in
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output.connections.forEach { connection in
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if connection.isVideoMirroringSupported {
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connection.automaticallyAdjustsVideoMirroring = false
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connection.isVideoMirrored = isMirrored
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}
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connection.setInterfaceOrientation(connectionOrientation)
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}
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}
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}
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}
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}
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}
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