114 lines
3.6 KiB
Swift
114 lines
3.6 KiB
Swift
//
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// PhotoCaptureDelegate.swift
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// mrousavy
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//
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// Created by Marc Rousavy on 15.12.20.
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// Copyright © 2020 mrousavy. All rights reserved.
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//
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import AVFoundation
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private var delegatesReferences: [NSObject] = []
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// MARK: - PhotoCaptureDelegate
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class PhotoCaptureDelegate: NSObject, AVCapturePhotoCaptureDelegate {
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private let promise: Promise
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private let enableShutterSound: Bool
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required init(promise: Promise, enableShutterSound: Bool) {
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self.promise = promise
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self.enableShutterSound = enableShutterSound
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super.init()
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delegatesReferences.append(self)
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}
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func photoOutput(_: AVCapturePhotoOutput, willCapturePhotoFor _: AVCaptureResolvedPhotoSettings) {
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if !enableShutterSound {
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// disable system shutter sound (see https://stackoverflow.com/a/55235949/5281431)
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AudioServicesDisposeSystemSoundID(1108)
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}
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}
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func photoOutput(_: AVCapturePhotoOutput, didFinishProcessingPhoto photo: AVCapturePhoto, error: Error?) {
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defer {
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delegatesReferences.removeAll(where: { $0 == self })
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}
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if let error = error as NSError? {
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promise.reject(error: .capture(.unknown(message: error.description)), cause: error)
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return
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}
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let error = ErrorPointer(nilLiteral: ())
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guard let tempFilePath = RCTTempFilePath("jpeg", error)
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else {
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promise.reject(error: .capture(.createTempFileError), cause: error?.pointee)
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return
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}
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let url = URL(string: "file://\(tempFilePath)")!
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guard let data = photo.fileDataRepresentation() else {
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promise.reject(error: .capture(.fileError))
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return
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}
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do {
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try data.write(to: url)
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let exif = photo.metadata["{Exif}"] as? [String: Any]
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let width = exif?["PixelXDimension"]
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let height = exif?["PixelYDimension"]
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let exifOrientation = photo.metadata[String(kCGImagePropertyOrientation)] as? UInt32 ?? CGImagePropertyOrientation.up.rawValue
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let cgOrientation = CGImagePropertyOrientation(rawValue: exifOrientation) ?? CGImagePropertyOrientation.up
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let orientation = getOrientation(forExifOrientation: cgOrientation)
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let isMirrored = getIsMirrored(forExifOrientation: cgOrientation)
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promise.resolve([
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"path": tempFilePath,
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"width": width as Any,
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"height": height as Any,
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"orientation": orientation,
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"isMirrored": isMirrored,
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"isRawPhoto": photo.isRawPhoto,
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"metadata": photo.metadata,
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"thumbnail": photo.embeddedThumbnailPhotoFormat as Any,
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])
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} catch {
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promise.reject(error: .capture(.fileError), cause: error as NSError)
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}
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}
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func photoOutput(_: AVCapturePhotoOutput, didFinishCaptureFor _: AVCaptureResolvedPhotoSettings, error: Error?) {
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defer {
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delegatesReferences.removeAll(where: { $0 == self })
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}
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if let error = error as NSError? {
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promise.reject(error: .capture(.unknown(message: error.description)), cause: error)
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return
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}
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}
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private func getOrientation(forExifOrientation exifOrientation: CGImagePropertyOrientation) -> String {
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switch exifOrientation {
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case .up, .upMirrored:
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return "portrait"
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case .down, .downMirrored:
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return "portrait-upside-down"
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case .left, .leftMirrored:
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return "landscape-left"
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case .right, .rightMirrored:
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return "landscape-right"
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default:
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return "portrait"
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}
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}
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private func getIsMirrored(forExifOrientation exifOrientation: CGImagePropertyOrientation) -> Bool {
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switch exifOrientation {
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case .upMirrored, .rightMirrored, .downMirrored, .leftMirrored:
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return true
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default:
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return false
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}
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}
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}
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