ios开发技术分享课题（IOS技术分享anyLive开源项目）

anyLive 是 anyRTC 开源的推拉流项目。采用跨平台架构设计，一套代码支持Android、iOS、Windows、Mac、Ubuntu等平台。本文主要介绍anyLive iOS平台的实现。

• 源码下载（https://github.com/anyrtcIO-Community/anyRTC-RTMP-OpenSource）

• 开发工具：Xcode13 真机运行
• 开发语言：Objective-C、Swift
• 实现：推拉流。

anyLive 实现了推流、拉流、屏幕共享、美颜等功能。

var menus = [ [MenuItem(imageName: "icon_push", title: "直播推流", subTitle: "采用WebRTC底层架构，支持RTMP/HLS/HTTP-FLV")], [MenuItem(imageName: "icon_pull", title: "直播拉流（播放）", subTitle: "低功直播播放器，支持软硬解切换，横竖切换、低延迟等")], [MenuItem(imageName: "icon_video", title: "小视频播放", subTitle: "支持首屏秒开、清晰度无缝切换、码率自适应等多种特性")] ] let identifier = "ARLiveMainCell" lazy var identifierArr: [String] = { ["Live_JoinVC", "Player_JoinVC", "Video_JoinVC"] }() override func viewDidLoad() { super.viewDidLoad() // Uncomment the following line to preserve selection between presentations // self.clearsSelectionOnViewWillAppear = false // Uncomment the following line to display an Edit button in the navigation bar for this view controller. // self.navigationItem.rightBarButtonItem = self.editButtonItem let label = UILabel(frame: CGRectZero) label.textColor = UIColor(hexString: "#C4C4CE") label.font = UIFont(name: PingFang, size: 12) label.textAlignment = .center label.text = "Power by anyRTC" view.addSubview(label) liveEngine = ARLiveEngineKit(delegate: nil) } override func viewWillAppear(_ animated: Bool) { super.viewWillAppear(animated) navigationController?.setNavigationBarHidden(true, animated: true) } // MARK: - Table view data source override func numberOfSections(in tableView: UITableView) -> Int { return menus.count } override func tableView(_ tableView: UITableView, numberOfRowsInSection section: Int) -> Int { // #warning Incomplete implementation, return the number of rows return menus[section].count } override func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell { let cell: ARMainCell = tableView.dequeueReusableCell(withIdentifier: identifier, for: indexPath) as! ARMainCell // Configure the cell... let menuItem = menus[indexPath.section][indexPath.row] cell.mainImageView.image = UIImage(named: menuItem.imageName) cell.mainLabel.text = menuItem.title cell.subLabel.text = menuItem.subTitle cell.expectedImageView.isHidden = (indexPath.section != 2) return cell } override func tableView(_ tableView: UITableView, didSelectRowAt indexPath: IndexPath) { if indexPath.section != 2 { guard let vc = storyboard?.instantiateViewController(withIdentifier: identifierArr[indexPath.section]) else { return } navigationController?.pushViewController(vc, animated: true) } else { ARToast.showText(text: " Please look forward!", duration: 1.0) }

func initializePusher() { /// 实例化推流对象 livePusher = liveEngine!.createArLivePusher() livePusher.setDelegate(self) /// 设置推流视频编码参数 let param = ARLiveVideoEncoderParam(resolution!) livePusher.setVideoQuality(param) livePusher.startCamera(true) livePusher.startMicrophone() /// 设置本地摄像头预览 View livePusher.setupCameraRender(renderView) livePusher.setRenderFill(.fill) /// 开始推流 livePusher.startPush(pushUrl) } // MARK: - ARLivePushDelegate extension ArLiveViewController: ARLivePushDelegate { func onError(_ code: ARLiveCode, message msg: String?, extraInfo: [AnyHashable: Any]?) { /// 直播推流器错误通知，推流器出现错误时，会回调该通知 Logger.log(message: "onError \(code.rawValue)", level: .error) } func onWarning(_ code: ARLiveCode, message msg: String?, extraInfo: [AnyHashable: Any]?) { /// 直播推流器警告通知 Logger.log(message: "onWarning \(code.rawValue)", level: .warning) } func onCaptureFirstAudioFrame() { /// 首帧音频采集完成的回调通知 Logger.log(message: "onCaptureFirstAudioFrame", level: .info) } func onCaptureFirstVideoFrame() { /// 首帧视频采集完成的回调通知 Logger.log(message: "onCaptureFirstVideoFrame", level: .info) } func onMicrophoneVolumeUpdate(_ volume: Int) { /// 麦克风采集音量值回调 Logger.log(message: "onMicrophoneVolumeUpdate volume = \(volume)", level: .info) } func onPushStatusUpdate(_ status: ARLivePushStatus, message msg: String?, extraInfo: [AnyHashable: Any]?) { /// 推流器连接状态回调通知 Logger.log(message: "onPushStatusUpdate status = \(status.rawValue)", level: .info) stateLabel.text = "\(status.description)" } func onStatisticsUpdate(_ statistics: ARLivePusherStatistics) { /// 直播推流器统计数据回调 // Logger.log(message: "onStatisticsUpdate width = \(statistics.width), height = \(statistics.height), fps = \(statistics.fps), videoBitrate = \(statistics.videoBitrate), audioBitrate = \(statistics.audioBitrate)", level: .info) } func onSnapshotComplete(_ image: UIImage) { /// 截图回调 Logger.log(message: "onSnapshotComplete", level: .info) } }

func initializePlayer() { /// 创建拉流实例对象 livePlayer = liveEngine!.createArLivePlayer() livePlayer.setDelegate(self) /// 设置播放器的视频渲染 View livePlayer.setRenderView(renderView) livePlayer.setRenderFill(renderMode) /// 设置播放器缓存自动调整的最小和最大时间 ( 单位：秒 ) livePlayer.setCacheParams(1.0, maxTime: 100) /// 开始播放音视频流 livePlayer.startPlay(pullUrl) } // MARK: - ARLivePlayDelegate extension ArPlayerViewController: ARLivePlayDelegate { func onError(_ player: ARLivePlayer, code: ARLiveCode, message msg: String?, extraInfo: [AnyHashable: Any]?) { /// 直播播放器错误通知，播放器出现错误时，会回调该通知 Logger.log(message: "onError code = \(code.rawValue)", level: .info) } func onWarning(_ player: ARLivePlayer, code: ARLiveCode, message msg: String?, extraInfo: [AnyHashable: Any]?) { /// 直播播放器警告通知 Logger.log(message: "onWarning code = \(code.rawValue)", level: .info) } func onVideoPlayStatusUpdate(_ player: ARLivePlayer, status: ARLivePlayStatus, reason: ARLiveStatusChangeReason, extraInfo: [AnyHashable: Any]?) { /// 直播播放器视频状态变化通知 Logger.log(message: "onVideoPlayStatusUpdate status = \(status.rawValue), reason = \(reason.rawValue)", level: .info) liveStatus = status stateLabel.text = "\(status.description)" } func onAudioPlayStatusUpdate(_ player: ARLivePlayer, status: ARLivePlayStatus, reason: ARLiveStatusChangeReason, extraInfo: [AnyHashable: Any]?) { /// 直播播放器音频状态变化通知 Logger.log(message: "onAudioPlayStatusUpdate status = \(status.rawValue) reason = \(reason.rawValue)", level: .info) } func onPlayoutVolumeUpdate(_ player: ARLivePlayer, volume: Int) { /// 播放器音量大小回调 Logger.log(message: "onPlayoutVolumeUpdate volume = \(volume)", level: .info) } func onStatisticsUpdate(_ player: ARLivePlayer, statistics: ARLivePlayerStatistics?) { /// 直播播放器统计数据回调 if statistics != nil { Logger.log(message: "onStatisticsUpdate width = \(statistics!.width), height =\(statistics!.height), fps = \(statistics!.fps), videoBitrate = \(statistics!.videoBitrate), audioBitrate = \(statistics!.audioBitrate)", level: .info) } } func onSnapshotComplete(_ player: ARLivePlayer, image: UIImage) { /// 截图回调 UIImageWriteToSavedPhotosAlbum(image, self, #selector(saveImage(image:didFinishSavingWithError:contextInfo:)), nil) NSObject.cancelPreviousPerformRequests(withTarget: self, selector: #selector(removeSnapshot), object: nil) snapImageView.image = image let imageWidth = image.size.width/2 let imageHeight = image.size.height/2 snapImageView.frame = CGRect(x: ARScreenWidth - imageWidth - 24, y: 150, width: imageWidth, height: imageHeight) view.addSubview(snapImageView) perform(#selector(removeSnapshot), with: nil, afterDelay: 2) Logger.log(message: "onSnapshotComplete sucess, imageWidth = \(image.size.width), imageHeight = \(image.size.height)", level: .info) } func onRenderVideoFrame(_ player: ARLivePlayer, frame videoFrame: ARLiveVideoFrame?) { /// 自定义视频渲染回调 Logger.log(message: "onRenderVideoFrame", level: .info) } func onReceiveSeiMessage(_ player: ARLivePlayer, payloadType: Int32, data: Data?) { /// 收到 SEI 消息的回调 Logger.log(message: "onReceiveSeiMessage payloadType = \(payloadType)", level: .info) } }

override func processSampleBuffer(_ sampleBuffer: CMSampleBuffer, with sampleBufferType: RPSampleBufferType) { DispatchQueue.main.async { switch sampleBufferType { case RPSampleBufferType.video: // Handle video sample buffer ARUploader.sendVideoBuffer(sampleBuffer) case RPSampleBufferType.audioApp: // Handle audio sample buffer for app audio ARUploader.sendAudioAppBuffer(sampleBuffer) case RPSampleBufferType.audioMic: // Handle audio sample buffer for mic audio ARUploader.sendAudioMicBuffer(sampleBuffer) break @unknown default: // Handle other sample buffer types fatalError("Unknown type of sample buffer") } } } private static let liverPusher: ARLivePusher = { let livePusher = liveEngine.createArLivePusher() let screenSize = UIScreen.main.currentMode?.size let screenWidth = screenSize?.width let screenHeight = screenSize?.height /// 设置推流视频编码参数 let videoParam = ARLiveVideoEncoderParam() videoParam.videoResolution = .resolution640x480 videoParam.videoResolutionMode = .portrait videoParam.videoScaleMode = .fit livePusher.setVideoQuality(videoParam) livePusher.startMicrophone() /// 开启自采集 livePusher.enableCustomAudioCapture(true) livePusher.enableCustomVideoCapture(true) /// 开始推流 livePusher.startPush(<#T##String#>) return livePusher }() static func sendAudioAppBuffer(_ sampleBuffer: CMSampleBuffer) { ARAudioTube.liverPusher(liverPusher, pushAudioCMSampleBuffer: sampleBuffer, resampleRate: audioSampleRate, type: .app) } static func sendAudioMicBuffer(_ sampleBuffer: CMSampleBuffer) { ARAudioTube.liverPusher(liverPusher, pushAudioCMSampleBuffer: sampleBuffer, resampleRate: audioSampleRate, type: .mic) }

最后，因时间有限项目中还存在一些bug和待完善的功能点。仅供参考，欢迎大家fork。有不足之处欢迎大家指出issues。最后再贴一下 Github开源下载地址。

Github开源下载地址（https://github.com/anyrtcIO-Community/anyRTC-RTMP-OpenSource）。

如果觉得不错，希望点个star~