static parseVPCC(codecBase, reader, boxName) {
    const Mp4BoxParsers = shaka.util.Mp4BoxParsers;
    const profile = reader.readUint8();
    const level = reader.readUint8();
    const bitDepth = (reader.readUint8() >> 4) & 0x0f;
    const codec = codecBase + '.' +
      Mp4BoxParsers.addLeadingZero_(profile) + '.' +
      Mp4BoxParsers.addLeadingZero_(level) + '.' +
      Mp4BoxParsers.addLeadingZero_(bitDepth);

    return {codec};
  }
Parses a VPCC box.
@param {string} codecBase
@param {!shaka.util.DataViewReader} reader
@param {string} boxName
@return {!shaka.util.ParsedVPCCBox}