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c9b9e1d6 RBR |
1 | import AppKit |
2 | import AVFoundation | |
3 | ||
4 | class CapturaCaptureSession: AVCaptureSession, AVCaptureFileOutputRecordingDelegate, AVCaptureVideoDataOutputSampleBufferDelegate { | |
5 | ||
6 | let videoOutput = AVCaptureVideoDataOutput() | |
7 | let movieFileOutput = AVCaptureMovieFileOutput() | |
8 | var receivedFrames = false | |
9 | ||
10 | init(_ screen: NSScreen, box: NSRect) { | |
11 | super.init() | |
12 | ||
13 | let displayId = screen.deviceDescription[NSDeviceDescriptionKey("NSScreenNumber")] as! CGDirectDisplayID | |
14 | let screenInput = AVCaptureScreenInput(displayID: displayId) | |
15 | screenInput?.cropRect = box.insetBy(dx: 1, dy: 1) | |
16 | ||
17 | if self.canAddInput(screenInput!) { | |
18 | self.addInput(screenInput!) | |
19 | } | |
20 | ||
21 | videoOutput.setSampleBufferDelegate(self, queue: Dispatch.DispatchQueue(label: "sample buffer delegate", attributes: [])) | |
22 | ||
23 | if self.canAddOutput(videoOutput) { | |
24 | self.addOutput(videoOutput) | |
25 | } | |
26 | ||
27 | if self.canAddOutput(movieFileOutput) { | |
28 | self.addOutput(movieFileOutput) | |
29 | } | |
30 | } | |
31 | ||
32 | func startRecording() { | |
33 | receivedFrames = false | |
34 | self.startRunning() | |
35 | ||
36 | DispatchQueue.main.asyncAfter(deadline: .now() + 1) { | |
37 | if !self.receivedFrames { | |
38 | NotificationCenter.default.post(name: .failedToStart, object: nil, userInfo: nil) | |
39 | } | |
40 | } | |
41 | } | |
42 | ||
43 | func startRecording(to url: URL) { | |
44 | self.startRecording() | |
45 | movieFileOutput.startRecording(to: url, recordingDelegate: self) | |
46 | } | |
47 | ||
48 | // MARK: - AVCaptureVideoDataOutputSampleBufferDelegate Implementation | |
49 | ||
50 | func captureOutput(_ output: AVCaptureOutput, didOutput sampleBuffer: CMSampleBuffer, from connection: AVCaptureConnection) { | |
51 | receivedFrames = true | |
52 | ||
53 | guard let imageBuffer = CMSampleBufferGetImageBuffer(sampleBuffer) else { return } | |
54 | NotificationCenter.default.post(name: .receivedFrame, object: nil, userInfo: ["frame": imageBuffer]) | |
55 | } | |
56 | ||
57 | // MARK: - AVCaptureFileOutputRecordingDelegate Implementation | |
58 | ||
59 | func fileOutput(_ output: AVCaptureFileOutput, didFinishRecordingTo outputFileURL: URL, from connections: [AVCaptureConnection], error: Error?) {} | |
60 | } |