react-native-vision-camera/ios/PhotoCaptureDelegate.swift

74 lines
2.1 KiB
Swift
Raw Normal View History

2021-02-19 08:28:05 -07:00
//
// PhotoCaptureDelegate.swift
// Cuvent
//
// Created by Marc Rousavy on 15.12.20.
// Copyright © 2020 mrousavy. All rights reserved.
2021-02-19 08:28:05 -07:00
//
import AVFoundation
private var delegatesReferences: [NSObject] = []
2021-03-09 02:53:29 -07:00
// MARK: - PhotoCaptureDelegate
2021-02-19 08:28:05 -07:00
class PhotoCaptureDelegate: NSObject, AVCapturePhotoCaptureDelegate {
required init(promise: Promise) {
self.promise = promise
super.init()
delegatesReferences.append(self)
}
func photoOutput(_: AVCapturePhotoOutput, didFinishProcessingPhoto photo: AVCapturePhoto, error: Error?) {
defer {
delegatesReferences.removeAll(where: { $0 == self })
}
if let error = error as NSError? {
return promise.reject(error: .capture(.unknown(message: error.description)), cause: error)
2021-02-19 08:28:05 -07:00
}
let error = ErrorPointer(nilLiteral: ())
guard let tempFilePath = RCTTempFilePath("jpeg", error)
else {
return promise.reject(error: .capture(.createTempFileError), cause: error?.pointee)
}
let url = URL(string: "file://\(tempFilePath)")!
guard let data = photo.fileDataRepresentation()
else {
return promise.reject(error: .capture(.fileError))
}
do {
try data.write(to: url)
let exif = photo.metadata["{Exif}"] as? [String: Any]
let width = exif?["PixelXDimension"]
let height = exif?["PixelYDimension"]
return promise.resolve([
"path": tempFilePath,
"width": width as Any,
"height": height as Any,
"isRawPhoto": photo.isRawPhoto,
"metadata": photo.metadata,
"thumbnail": photo.embeddedThumbnailPhotoFormat as Any,
])
} catch {
return promise.reject(error: .capture(.fileError), cause: error as NSError)
}
}
func photoOutput(_: AVCapturePhotoOutput, didFinishCaptureFor _: AVCaptureResolvedPhotoSettings, error: Error?) {
defer {
delegatesReferences.removeAll(where: { $0 == self })
}
if let error = error as NSError? {
return promise.reject(error: .capture(.unknown(message: error.description)), cause: error)
2021-02-19 08:28:05 -07:00
}
}
2021-03-09 02:53:29 -07:00
// MARK: Private
private let promise: Promise
2021-02-19 08:28:05 -07:00
}