52 lines
1.4 KiB
Swift
52 lines
1.4 KiB
Swift
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//
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// CameraView+Torch.swift
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// VisionCamera
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//
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// Created by Marc Rousavy on 20.07.23.
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// Copyright © 2023 mrousavy. All rights reserved.
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//
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import AVFoundation
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import Foundation
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extension CameraView {
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final func setTorchMode(_ torchMode: String) {
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guard let device = videoDeviceInput?.device else {
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invokeOnError(.session(.cameraNotReady))
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return
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}
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guard var torchMode = AVCaptureDevice.TorchMode(withString: torchMode) else {
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invokeOnError(.parameter(.invalid(unionName: "TorchMode", receivedValue: torch)))
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return
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}
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if !captureSession.isRunning {
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torchMode = .off
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}
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if device.torchMode == torchMode {
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// no need to run the whole lock/unlock bs
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return
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}
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if !device.hasTorch || !device.isTorchAvailable {
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if torchMode == .off {
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// ignore it, when it's off and not supported, it's off.
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return
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} else {
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// torch mode is .auto or .on, but no torch is available.
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invokeOnError(.device(.torchUnavailable))
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return
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}
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}
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do {
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try device.lockForConfiguration()
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device.torchMode = torchMode
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if torchMode == .on {
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try device.setTorchModeOn(level: 1.0)
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}
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device.unlockForConfiguration()
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} catch let error as NSError {
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invokeOnError(.device(.configureError), cause: error)
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return
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}
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}
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}
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