Javascript 现在如何知道在SHAKA PLAYER中传递ContentProtectionCallback？

现在有谁能帮我知道如何传递ContentProtectionCallback，以便我可以在shaka player中处理drm许可证url的预处理器

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请阅读此页。在此页中，将解释如何在请求之前或之后处理许可证。我假设ContentProtectionCallback是一个处理程序，用于在向服务器发出许可证请求之前对其进行处理。在这种情况下：

  player.getNetworkingEngine().registerRequestFilter(function(type, request) {
    // Manipulate request before is sent.
    if (type == shaka.net.NetworkingEngine.RequestType.LICENSE) {
      const body = request.body;
      // Do something with the body. Then, assign it back.
      request.body = manipulateBody(body)
    }
  });

您也可以使用registerResponseFilter方法对响应应用相同的过程

  player.getNetworkingEngine().registerRequestFilter(function(type, request) {
    // Manipulate request before is sent.
    if (type == shaka.net.NetworkingEngine.RequestType.LICENSE) {
      const body = request.body;
      // Do something with the body. Then, assign it back.
      request.body = manipulateBody(body)
    }
  });