this.init = function()

in 2020/lib/mse/msutil.js [201:244]
43 lines of code
11 McCabe index (conditional complexity)

  this.init = function(t, cb) {
    this.initLength = forceSize || 32 * 1024;
    if (!cb) {
      if (!this.initBuf)
        throw 'Calling init synchronusly when the init seg is not ready';
      return this.initBuf;
    }
    if (this.initBuf) {
      timeoutManager.setTimeout(cb.bind(this, this.initBuf), 1);
    }
    else {
      var self = this;
      var fileExtPattern = /\.(webm|mp4)$/;
      var extResult = fileExtPattern.exec(this.path)[1];
      if (extResult !== 'mp4' && extResult !== 'webm') {
        throw 'File extension "' + extResult + '" not supported!';
      }
      var xhr = xhrManager.createRequest(this.path, function(e) {
        self.segs = null;
        var response = this.getResponseData();
        if (extResult === 'mp4') {
          self.segs = parseMp4(response);
        } else {
          if (!!self.forceSize) {
            self.segs = parseWebM(response.buffer, self.forceSize);
          } else {
            self.segs = parseWebM(response.buffer);
          }
        }
        self.startIndex = self.startIndex || 0;
        self.endIndex = self.endIndex || self.segs.length - 1;
        self.endIndex = Math.min(self.endIndex, self.segs.length - 1);
        self.startIndex = Math.min(self.startIndex, self.endIndex);
        self.segIndex = self.startIndex;

        xhr = xhrManager.createRequest(self.path, function(e) {
          self.initBuf = this.getResponseData();
          cb.call(self, self.initBuf);
        }, 0, self.segs[0].offset);
        xhr.send();
      }, 0, self.initLength);
      xhr.send();
    }
  };