async setEncodingParameters()

in src/transceivercontroller/DefaultTransceiverController.ts [55:95]
36 lines of code
16 McCabe index (conditional complexity)

  async setEncodingParameters(
    encodingParamMap: Map<string, RTCRtpEncodingParameters>
  ): Promise<void> {
    if (!this._localCameraTransceiver || this._localCameraTransceiver.direction !== 'sendrecv') {
      return;
    }

    const sender = this._localCameraTransceiver.sender;
    if (!encodingParamMap || encodingParamMap.size === 0) {
      return;
    }
    const newEncodingParams = Array.from(encodingParamMap.values());

    const oldParam: RTCRtpSendParameters = sender.getParameters();
    if (!oldParam.encodings || oldParam.encodings.length === 0) {
      oldParam.encodings = newEncodingParams;
    } else {
      for (const existing of oldParam.encodings) {
        for (const changed of newEncodingParams) {
          if ((existing.rid || changed.rid) && existing.rid !== changed.rid) {
            continue;
          }
          let key: keyof RTCRtpEncodingParameters;
          for (key in changed) {
            // These properties can't be changed.
            if (key === 'rid' || key === 'codecPayloadType') {
              continue;
            }
            /* istanbul ignore else */
            if (changed.hasOwnProperty(key)) {
              (existing[key] as RTCRtpEncodingParameters[keyof RTCRtpEncodingParameters]) = changed[
                key
              ];
            }
          }
        }
      }
    }

    await sender.setParameters(oldParam);
  }