概观

import CamoProducerKit

class MyVideoManager {
    let controller = CamoController()

    // ...
}

controller.start()
// ...
controller.stop()

extension MyVideoManager: CamoControllerDelegate {
    // Upon receiving a connection request, you can decide whether or not to accept it.
    func camoControllerShouldAcceptIncomingConnection(_ controller: CamoController) -> Bool {
        // You could return false if you aren't ready to accept connections, such as during onboarding.
        return true
    }

    // Called whenever the connection state changes, such as if the Camo service starts or stops, or if a new connection is made.
    func camoController(_ controller: CamoController, stateDidChangeTo state: CamoControllerState?) {
        // From here, you can update your UI and other state
        print("New state:", state)
    }
}

func camoController(_ controller: CamoController, stateDidChangeTo state: CamoControllerState?) {
    let statusText = { () -> String in
        guard case let .running(serviceState) = state else {
            return "Camo service not running"
        }
        switch serviceState {
        case .active(let connection): return "Connected to \(connection.name)"
        case .paused(let connection): return "Paused, but connected to \(connection.name)"
        case .notConnected: return "Camo service running, but no connection"
        }
    }()

    DispatchQueue.main.async {
        self.statusTextLabel.text = statusText
    }
}

// upon receiving video from the camera or elsewhere
camoController.enqueueVideo(sampleBuffer: sampleBuffer)

// upon receiving audio from the microphone or elsewhere
camoController.enqueuePCMAudio(data: chunk)

class CaptureController: AVCaptureVideoDataOutputSampleBufferDelegate {
    // ...

    func startSession() throws {
        guard let camera = AVCaptureDevice.default(for: .video) else { fatalError("No camera found") }

        let input = try AVCaptureDeviceInput(device: camera)
        captureSession.addInput(input)

        let output = AVCaptureVideoDataOutput()
        output.alwaysDiscardsLateVideoFrames = true
        output.setSampleBufferDelegate(self, queue: videoDataOutputQueue)
        captureSession.addOutput(output)

        captureSession.startRunning()
    }

    // ...

    func captureOutput(_ output: AVCaptureOutput, didOutput sampleBuffer: CMSampleBuffer, from connection: AVCaptureConnection) {
        camoController.enqueueVideo(sampleBuffer: sampleBuffer)
    }
}