damus

nostr ios client
git clone git://jb55.com/damus
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VideoCaptureProcessor.swift (2517B)

      1 //
      2 //  VideoCaptureProcessor.swift
      3 //  damus
      4 //
      5 //  Created by Suhail Saqan on 8/5/23.
      6 //
      7 
      8 import Foundation
      9 import AVFoundation
     10 import Photos
     11 
     12 class VideoCaptureProcessor: NSObject {
     13     private(set) var movieOutput: AVCaptureMovieFileOutput?
     14 
     15     private let beginHandler: () -> Void
     16     private let completionHandler: (VideoCaptureProcessor, URL) -> Void
     17     private let videoProcessingHandler: (Bool) -> Void
     18     private var session: AVCaptureSession?
     19 
     20     init(movieOutput: AVCaptureMovieFileOutput?,
     21          beginHandler: @escaping () -> Void,
     22          completionHandler: @escaping (VideoCaptureProcessor, URL) -> Void,
     23          videoProcessingHandler: @escaping (Bool) -> Void) {
     24         self.beginHandler = beginHandler
     25         self.completionHandler = completionHandler
     26         self.videoProcessingHandler = videoProcessingHandler
     27         self.movieOutput = movieOutput
     28     }
     29 
     30     func startCapture(session: AVCaptureSession) {
     31         if let movieOutput = self.movieOutput, session.isRunning {
     32             let outputFileURL = uniqueOutputFileURL()
     33             movieOutput.startRecording(to: outputFileURL, recordingDelegate: self)
     34         }
     35     }
     36 
     37     func stopCapture() {
     38         if let movieOutput = self.movieOutput {
     39             if movieOutput.isRecording {
     40                 movieOutput.stopRecording()
     41             }
     42         }
     43     }
     44 
     45     private func uniqueOutputFileURL() -> URL {
     46         let tempDirectory = FileManager.default.temporaryDirectory
     47         let fileName = UUID().uuidString + ".mov"
     48         return tempDirectory.appendingPathComponent(fileName)
     49     }
     50 }
     51 
     52 extension VideoCaptureProcessor: AVCaptureFileOutputRecordingDelegate {
     53 
     54     func fileOutput(_ output: AVCaptureFileOutput, didStartRecordingTo fileURL: URL, from connections: [AVCaptureConnection]) {
     55         DispatchQueue.main.async {
     56             self.beginHandler()
     57         }
     58     }
     59 
     60     func fileOutput(_ output: AVCaptureFileOutput, willFinishRecordingTo fileURL: URL, from connections: [AVCaptureConnection]) {
     61         DispatchQueue.main.async {
     62             self.videoProcessingHandler(true)
     63         }
     64     }
     65 
     66     func fileOutput(_ output: AVCaptureFileOutput, didFinishRecordingTo outputFileURL: URL, from connections: [AVCaptureConnection], error: Error?) {
     67         if let error = error {
     68             print("Error capturing video: \(error)")
     69             return
     70         }
     71 
     72         DispatchQueue.main.async {
     73             self.completionHandler(self, outputFileURL)
     74             self.videoProcessingHandler(false)
     75         }
     76     }
     77 }