working for ios

Author: Felipe Rodriguez Esturo

example/src/CameraPage.tsx

@@ -205,6 +205,7 @@ export function CameraPage({ navigation }: Props): React.ReactElement {
                 ref={camera}
                 onInitialized={onInitialized}
                 onError={onError}
+                onBytesWrittenVideo={(bytes) => console.log(`Bytes written: ${bytes / 1024 / 1024} MB!`)}
                 onStarted={() => console.log('Camera started!')}
                 onStopped={() => console.log('Camera stopped!')}
                 onPreviewStarted={() => console.log('Preview started!')}

package/ios/Core/CameraSession+Video.swift

@@ -18,7 +18,8 @@ extension CameraSession {
    */
   func startRecording(options: RecordVideoOptions,
                       onVideoRecorded: @escaping (_ video: Video) -> Void,
-                      onError: @escaping (_ error: CameraError) -> Void) {
+                      onError: @escaping (_ error: CameraError) -> Void,
+                      onBytesWritten: @escaping (_ bytes: Double) -> Void) {
     // Run on Camera Queue
     CameraQueues.cameraQueue.async {
       let start = DispatchTime.now()
@@ -48,6 +49,8 @@ extension CameraSession {
         }
 
         self.recordingSession = nil
+        self.recordingSizeTimer?.cancel()
+        self.recordingSizeTimer = nil
 
         if self.didCancelRecording {
           VisionLogger.log(level: .info, message: "RecordingSession finished because the recording was canceled.")
@@ -128,6 +131,26 @@ extension CameraSession {
         self.didCancelRecording = false
         self.recordingSession = recordingSession
 
+        let timer = DispatchSource.makeTimerSource(queue: CameraQueues.cameraQueue)
+        timer.schedule(deadline: .now(), repeating: 0.4)
+
+        timer.setEventHandler {
+          guard let session = self.recordingSession else {
+            timer.cancel()
+            return
+          }
+
+          let path = session.url.path
+          if let size = try? FileManager.default.attributesOfItem(atPath: path)[.size] as? NSNumber {
+            let bytes = size.doubleValue
+
+            DispatchQueue.main.async {
+              onBytesWritten(bytes)
+            }
+          }
+        }
+        self.recordingSizeTimer = timer
+        self.recordingSizeTimer?.resume()
         let end = DispatchTime.now()
         VisionLogger.log(level: .info, message: "RecordingSesssion started in \(Double(end.uptimeNanoseconds - start.uptimeNanoseconds) / 1_000_000)ms!")
       } catch let error as CameraError {

package/ios/Core/CameraSession.swift

@@ -31,6 +31,7 @@ final class CameraSession: NSObject, AVCaptureVideoDataOutputSampleBufferDelegat
   // State
   var metadataProvider = MetadataProvider()
   var recordingSession: RecordingSession?
+  var recordingSizeTimer: DispatchSourceTimer?
   var didCancelRecording = false
   var orientationManager = OrientationManager()
 

package/ios/React/CameraView+RecordVideo.swift

@@ -28,7 +28,8 @@ extension CameraView: AVCaptureVideoDataOutputSampleBufferDelegate, AVCaptureAud
         },
         onError: { error in
           callback.reject(error: error)
-        }
+        },
+        onBytesWritten: self.onBytesWrittenVideo
       )
     } catch {
       // Some error occured while initializing VideoSettings

package/ios/React/CameraView.swift

@@ -80,6 +80,7 @@ public final class CameraView: UIView, CameraSessionDelegate, PreviewViewDelegat
   @objc var onOutputOrientationChangedEvent: RCTDirectEventBlock?
   @objc var onViewReadyEvent: RCTDirectEventBlock?
   @objc var onAverageFpsChangedEvent: RCTDirectEventBlock?
+  @objc var onBytesWrittenVideoEvent: RCTDirectEventBlock?
   @objc var onCodeScannedEvent: RCTDirectEventBlock?
 
   // zoom
@@ -392,4 +393,10 @@ public final class CameraView: UIView, CameraSessionDelegate, PreviewViewDelegat
       "averageFps": averageFps,
     ])
   }
+
+  func onBytesWrittenVideo(bytes: Double) {
+    onBytesWrittenVideoEvent?([
+      "bytesWritten": bytes,
+    ])
+  }
 }

package/ios/React/CameraViewManager.m

@@ -68,6 +68,7 @@ @interface RCT_EXTERN_REMAP_MODULE (CameraView, CameraViewManager, RCTViewManage
 RCT_REMAP_VIEW_PROPERTY(onPreviewOrientationChanged, onPreviewOrientationChangedEvent, RCTDirectEventBlock);
 RCT_REMAP_VIEW_PROPERTY(onViewReady, onViewReadyEvent, RCTDirectEventBlock);
 RCT_REMAP_VIEW_PROPERTY(onAverageFpsChanged, onAverageFpsChangedEvent, RCTDirectEventBlock);
+RCT_REMAP_VIEW_PROPERTY(onBytesWrittenVideo, onBytesWrittenVideoEvent, RCTDirectEventBlock);
 // Code Scanner
 RCT_EXPORT_VIEW_PROPERTY(codeScannerOptions, NSDictionary);
 RCT_REMAP_VIEW_PROPERTY(onCodeScanned, onCodeScannedEvent, RCTDirectEventBlock);