func: static const MXFCodecUL *mxf_get_codec_ul(const MXFCodecUL *uls, UID *uid)
  
  {
  
      while (uls->id != CODEC_ID_NONE) {
  
          if(mxf_match_uid(uls->uid, *uid, 16))
  
              break;
  
          uls++;
  
      }
  
      return uls;
  
  }
  