43 lines
1.1 KiB
Swift
43 lines
1.1 KiB
Swift
//
|
|
// CameraView+focus.swift
|
|
// Cuvent
|
|
//
|
|
// Created by Marc Rousavy on 19.02.21.
|
|
// Copyright © 2021 Facebook. All rights reserved.
|
|
//
|
|
|
|
import Foundation
|
|
|
|
extension CameraView {
|
|
|
|
func focus(point: CGPoint, promise: Promise) {
|
|
withPromise(promise) {
|
|
guard let device = self.videoDeviceInput?.device else {
|
|
throw CameraError.session(SessionError.cameraNotReady)
|
|
}
|
|
if !device.isFocusPointOfInterestSupported {
|
|
throw CameraError.device(DeviceError.focusNotSupported)
|
|
}
|
|
|
|
let normalizedPoint = self.videoPreviewLayer.captureDevicePointConverted(fromLayerPoint: point)
|
|
|
|
do {
|
|
try device.lockForConfiguration()
|
|
|
|
device.focusPointOfInterest = normalizedPoint
|
|
device.focusMode = .continuousAutoFocus
|
|
|
|
if device.isExposurePointOfInterestSupported {
|
|
device.exposurePointOfInterest = normalizedPoint
|
|
device.exposureMode = .continuousAutoExposure
|
|
}
|
|
|
|
device.unlockForConfiguration()
|
|
return nil
|
|
} catch {
|
|
throw CameraError.device(DeviceError.configureError)
|
|
}
|
|
}
|
|
}
|
|
}
|