/**
   * Finds a <tt>Channel</tt> of this <tt>Conference</tt> which receives a specific SSRC and is with
   * a specific <tt>MediaType</tt>.
   *
   * @param receiveSSRC the SSRC of a received RTP stream whose receiving <tt>Channel</tt> in this
   *     <tt>Conference</tt> is to be found
   * @param mediaType the <tt>MediaType</tt> of the <tt>Channel</tt> to be found
   * @return the <tt>Channel</tt> in this <tt>Conference</tt> which receives the specified
   *     <tt>ssrc</tt> and is with the specified <tt>mediaType</tt>; otherwise, <tt>null</tt>
   */
  public Channel findChannelByReceiveSSRC(long receiveSSRC, MediaType mediaType) {
    for (Content content : getContents()) {
      if (mediaType.equals(content.getMediaType())) {
        Channel channel = content.findChannelByReceiveSSRC(receiveSSRC);

        if (channel != null) return channel;
      }
    }
    return null;
  }