COMTYPE_PID_FILTER
ret = av7110_fw_cmd(av7110, COMTYPE_PID_FILTER,
buf[0] = (COMTYPE_PID_FILTER << 8) + AV7110_ADD_PID_FILTER;
buf[0] = (COMTYPE_PID_FILTER << 8) + AV7110_DEL_PID_FILTER;