Add iOS

ios/CameraView+RecordVideo.swift

@@ -0,0 +1,55 @@
+//
+//  CameraView+RecordVideo.swift
+//  Cuvent
+//
+//  Created by Marc Rousavy on 16.12.20.
+//  Copyright © 2020 Facebook. All rights reserved.
+//
+
+import AVFoundation
+
+extension CameraView {
+  func startRecording(options: NSDictionary, callback: @escaping RCTResponseSenderBlock) {
+    queue.async {
+      guard let movieOutput = self.movieOutput else {
+        return callback([NSNull(), makeReactError(.session(.cameraNotReady))])
+      }
+      if movieOutput.isRecording {
+        return callback([NSNull(), makeReactError(.capture(.recordingInProgress))])
+      }
+
+      let errorPointer = ErrorPointer(nilLiteral: ())
+      guard let tempFilePath = RCTTempFilePath("mov", errorPointer) else {
+        return callback([NSNull(), makeReactError(.capture(.createTempFileError), cause: errorPointer?.pointee)])
+      }
+      let tempURL = URL(string: "file://\(tempFilePath)")!
+      if let flashMode = options["flash"] as? String {
+        // use the torch as the video's flash
+        self.setTorchMode(flashMode)
+      }
+
+      movieOutput.startRecording(to: tempURL, recordingDelegate: RecordingDelegateWithCallback(callback: callback, resetTorchMode: {
+        // reset torch in case it was used as the video's "flash"
+        self.setTorchMode(self.torch)
+      }))
+      // TODO: The startRecording() func cannot be async because RN doesn't allow both a callback and a Promise in a single function. Wait for TurboModules?
+      // return ["path": tempFilePath]
+    }
+  }
+
+  func stopRecording(promise: Promise) {
+    queue.async {
+      withPromise(promise) {
+        guard let movieOutput = self.movieOutput else {
+          throw CameraError.session(SessionError.cameraNotReady)
+        }
+        if !movieOutput.isRecording {
+          throw CameraError.capture(CaptureError.noRecordingInProgress)
+        }
+
+        movieOutput.stopRecording()
+        return nil
+      }
+    }
+  }
+}