Swift 直播项目（推流、拉流）

桃扇骨 2021-09-18 08:42 524阅读 0赞

直播项目中关键的是推流和拉流，对于推流推流拉流大厂当然可以自己开发，但是像我一样在公司独立开发的，是没有那个时间和精力去独立开发一套推流拉流的（不是没时间和精力，是因为没那个能力TnT）,所以我们决定用别人的轮子

推流拉流的SDK非常多，我的项目推流用的是LFLiveKit(Adobe开源项目),拉流用的是IJKMediaFramework(B站开源项目) 之前用过阿里云的SDK，但是用起来差的一笔，不知道是不是我打开的方式不对

LFLiveKit可以用pod, IJKMediaFramework没有pod需要拖到项目里

LFLiveKit使用

lazy var videoConfiguration : LFLiveVideoConfiguration = {
           
            let videoConfiguration = LFLiveVideoConfiguration()
            
            videoConfiguration.videoSize = CGSize.init(width: 540, height: 960)
            
            videoConfiguration.videoBitRate = 800*1024
            
            videoConfiguration.videoMaxBitRate = 1000*1024
            
            videoConfiguration.videoMinBitRate = 500*1024
            
            videoConfiguration.videoFrameRate = 20
            
            videoConfiguration.videoMaxKeyframeInterval = 40
            
            videoConfiguration.outputImageOrientation = .portrait
            
            videoConfiguration.sessionPreset =  .captureSessionPreset720x1280
            
            return videoConfiguration
        }()
        
        lazy var audioConfiguration : LFLiveAudioConfiguration = {
            
            let audioConfiguration = LFLiveAudioConfiguration()
            
            audioConfiguration.numberOfChannels = 2
            
            audioConfiguration.audioBitrate = ._128Kbps
            
            audioConfiguration.audioSampleRate =  ._44100Hz
            
            return audioConfiguration
        }()
        
        lazy var session : LFLiveSession = { 
           
            let session = LFLiveSession.init(audioConfiguration: self.audioConfiguration, videoConfiguration: self.videoConfiguration)
            
            session?.preView = self.preview
            
            session?.delegate = self
    
            session?.running = true
            
            session?.showDebugInfo = true
            
            return session!
        }()
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videoConfiguration , audioConfiguration, session 分别是视频配置，音频配置，会话管理 session?.preView = self.preview为显示推流视频的view

推流

let stream = LFLiveStreamInfo()
      stream.url = rtmpUrl
      session.startLive(stream)
         
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rtmpUrl是后台人员给客户端的推流地址

结束推流

session.stopLive()
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美白

func beautyWhite(value : Float)  {
            //value  白程度
            session.brightLevel = CGFloat(value)
    }
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磨皮

func beautyBuffing(value : Float) {
         //value  磨皮成都
            session.beautyLevel = CGFloat(value)
    }
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切换摄像头

let devicePosition = session.captureDevicePosition
     session.captureDevicePosition = (devicePosition == .back) ? .front : .back
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打开闪光灯

//闪光灯只有后置摄像头有
      if session.captureDevicePosition == .front {
     return
          
      }
     session.torch = !session.torch
      sender.isSelected = !sender.isSelected
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静音

session.muted = true
    
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代理方法

/**  推流状态有变化回调*/
    - (void)liveSession:(nullable LFLiveSession *)session liveStateDidChange:(LFLiveState)state;
    /** 推流信息，码率分辨率等 */
    - (void)liveSession:(nullable LFLiveSession *)session debugInfo:(nullable LFLiveDebug *)debugInfo;
    /** 推流错误码 */
    - (void)liveSession:(nullable LFLiveSession *)session errorCode:(LFLiveSocketErrorCode)errorCode;
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IJKMediaFramework使用

let options = IJKFFOptions.byDefault()
            
    //视频源地址
      let url = playerUrl
            
           
     //初始化播放器，播放在线视频或直播（RTMP）
            
    player = IJKFFMoviePlayerController(contentURL: URL.init(string: url), with: options)
           
     //播放页面视图宽高自适应
           
     let autoresize = UIViewAutoresizing.flexibleWidth.rawValue |
      UIViewAutoresizing.flexibleHeight.rawValue
    player?.view.autoresizingMask = UIViewAutoresizing(rawValue: autoresize)
    player?.view.frame = self.preview.bounds
    player?.scalingMode = .aspectFit //缩放模式
    player?.shouldAutoplay = true //开启自动播放
    self.view.autoresizesSubviews = true
    self.preview.addSubview((player?.view)!)
     player?.prepareToPlay()
    
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开始拉流

createPlayer(playerUrl: url)
      player?.play()
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结束拉流

player?.stop()
     player?.shutdown()
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拉流状态改变通知

NotificationCenter.default.addObserver(self, selector:#selector(ijkMediaPlayerStatusChanged(notif:)), name:NSNotification.Name.IJKMPMoviePlayerPlaybackDidFinish, object: nil)
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