尝试播放 drm 内容但在 avplayer 上播放

如何解决尝试播放 drm 内容但在 avplayer 上播放

这里是我使用的代码

// certificate url
    let certificateURL = URL(string: "https://cn-fp-certificate.s3.ap-south-1.amazonaws.com/fairplay+certificate/fairplay.cer")
        override func viewDidLoad() {
            super.viewDidLoad()
            // Do any additional setup after loading the view.
// playback url
            streamingURL = " https://dev-cn-ottohm-movies.s3.ap-south-1.amazonaws.com/testing-cmaf/output-fairplay-and-widevine/180000005/master.m3u8"
            if let url = URL(string: streamingURL) {
                //1. Create AVPlayer object
                let asset = AVURLAsset(url: url)
    //            let queue = dispatchQueue(label: "LicenseGetQueue")
                asset.resourceLoader.setDelegate(self,queue: queue)
                let playerItem = AVPlayerItem(asset: asset)
                player = AVPlayer(playerItem: playerItem)
                print("player \(player)")
                //2. Create AVPlayerLayer object
                let playerLayer = AVPlayerLayer(player: player)
                playerLayer.frame = self.videoView.bounds //bounds of the view in which AVPlayer should be displayed
                playerLayer.videoGravity = .resizeAspect
                
                //3. Add playerLayer to view's layer
                self.videoView.layer.addSublayer(playerLayer)
                
                //4. Play Video
                player.play()
                
            }
            
        }
        
        func resourceLoader(_ resourceLoader: AVAssetResourceLoader,shouldWaitForLoadingOfRequestedResource loadingRequest: AVAssetResourceLoadingRequest) -> Bool {
            //we first check if a url is set in the manifest
            guard let url = loadingRequest.request.url else {
                print("[ViewController] resouceLoader url",#function,"Unable to read the url/host data")
                loadingRequest.finishLoading(with: NSError(domain: "com.iccaps.error",code: -1,userInfo: nil))
                return false
            }
            print("urlloadingRequest \(url)")
            print("[ViewController] resouceLoader URL",url)
            
            //when the url is correctly found we try to load the certificate date. watch out for this
            //example the certificate resides inside the bundle. but it sould be preferable fetched from the server
          
            guard
                let certificateData = try? Data(contentsOf: certificateURL!)
             
                else {
                    print("[ViewController] resourceLoader certificate","Unable to read the certificate data.")
                    loadingRequest.finishLoading(with: NSError(domain: "com.icapps.errror",code: -2,userInfo: nil))
                    return false
            }
            print("certificatedata \(certificateData)")
                  // Request the Server Playback Context.
            let contentId = "75a4fbcc7fade20fac3385237ec65976"
            guard
                let contentIdData = contentId.data(using: String.Encoding.utf8),let spcData = try? loadingRequest.streamingContentKeyRequestData(forApp: certificateData,contentIdentifier: contentIdData,options: nil),let dataRequest = loadingRequest.dataRequest else {
                loadingRequest.finishLoading(with: NSError(domain: "com.icapps.error",code: -3,userInfo: nil))
                print("?","Unable to read the SPC data.")
                return false
            }
            print("dataRequest \(dataRequest)")
            // Request the Content Key Context from the Key Server Module.
            let ckcURL = URL(string: "https://krpca13io8.execute-api.ap-south-1.amazonaws.com/dev/encryptionKeys")!
            var request = URLRequest(url: ckcURL)
            request.httpMethod = "POST"
            request.httpBody = spcData
            let session = URLSession(configuration: URLSessionConfiguration.default)
            let task = session.dataTask(with: request) { data,response,error in
              if let data = data {
                // The CKC is correctly returned and is Now send to the `AVPlayer` instance so we
                // can continue to play the stream.
                dataRequest.respond(with: data)
                loadingRequest.finishLoading()
                print("finish to load")
                print("response: \(response)")
              }
            
              else
              {
                print("?","Unable to fetch the CKC.")
                loadingRequest.finishLoading(with: NSError(domain: "com.icapps.error",code: -4,userInfo: nil))
              }
            }
            task.resume()
            print("task resume")
            return true
        }
    
    
    }

有知道的请回复一下，很有帮助。