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struct ContentView: View {
    var body: some View {
        VStack {
            Button("Server") {
                server?.start()
            }
            Spacer()
            Button("Client") {
                client.start()
            }

standinga

//
//  AVManager.swift
//  VideoToolboxArticle
//
//  Created by michal on 26/10/2020.
//

import AVFoundation

class AVManager {

standinga

import AVFoundation
import UIKit

class AVSampleBufferView: UIView {

    var bufferLayer: AVSampleBufferDisplayLayer {
        return layer as! AVSampleBufferDisplayLayer
    }

    override static var layerClass: AnyClass {

standinga

import AVFoundation
import UIKit
class ViewController: UIViewController {

    private let cameraView = AVSampleBufferView()

    private let encodedView = AVSampleBufferView()

    private let decodedView = AVSampleBufferView()

standinga

import AVFoundation
import UIKit
class ViewController: UIViewController, AVCaptureVideoDataOutputSampleBufferDelegate {

    private let avManager = AVManager()

    private let cameraView = AVSampleBufferView()

    private let encodedView = AVSampleBufferView()

standinga

import AVFoundation
import VideoToolbox

class H264Coder {

    var session: VTCompressionSession?

    let outputCallback: VTCompressionOutputCallback = { refcon, sourceFrameRefCon, status, infoFlags, sampleBuffer in
        guard let refcon = refcon,
              status == noErr,

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init(width: Int32, height: Int32) {
    let status = VTCompressionSessionCreate(allocator: kCFAllocatorDefault, 
                                            width: width, 
                                            height: height, 
                                            codecType: kCMVideoCodecType_H264, 
                                            encoderSpecification: nil, 
                                            imageBufferAttributes: nil, 
                                            compressedDataAllocator: nil,
                                            outputCallback: outputCallback, 
                                            refcon: Unmanaged.passUnretained(self).toOpaque(), 

standinga

import AVFoundation
import UIKit

class AVSampleBufferView: UIView {

    var bufferLayer: AVSampleBufferDisplayLayer {
        return layer as! AVSampleBufferDisplayLayer
    }

    override static var layerClass: AnyClass {

standinga

import AVFoundation
import VideoToolbox

class H264Coder {

    var session: VTCompressionSession?
    var onFrame: ((CMSampleBuffer) -> Void)?

    let outputCallback: VTCompressionOutputCallback = { refcon, sourceFrameRefCon, status, infoFlags, sampleBuffer in
        guard let refcon = refcon,

standinga

import Accelerate
import AVFoundation

func reverse(fromUrl: URL) -> URL? {
    do {
        let input = try AVAudioFile(forReading: fromUrl)
        let format = input.processingFormat
        let frameCount = AVAudioFrameCount(input.length)

        let outSettings = [AVNumberOfChannelsKey: format.channelCount,