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use std::sync::atomic::{AtomicBool, ATOMIC_BOOL_INIT, Ordering};
use sys::*;
use error::{self, Error};
use devices::Devices;
static INITIALIZED: AtomicBool = ATOMIC_BOOL_INIT;
/// The device manager.
pub struct Manager;
unsafe impl Send for Manager { }
/// Create the manager.
pub fn init() -> error::Result<Manager> {
if INITIALIZED.load(Ordering::Relaxed) {
return Err(Error::Initialized);
}
let status = unsafe { hid_init() };
if status != 0 {
return Err(Error::from(status));
}
INITIALIZED.store(true, Ordering::Relaxed);
Ok(Manager)
}
impl Drop for Manager {
fn drop(&mut self) {
let status = unsafe { hid_exit() };
if status != 0 {
panic!("hid_exit() failed");
}
INITIALIZED.store(false, Ordering::Relaxed);
}
}
impl Manager {
/// Find the wanted device, `vendor` or `product` are given it will
/// returns only the matches devices.
pub fn find(&self, vendor: Option<u16>, product: Option<u16>) -> Devices {
unsafe {
Devices::new(vendor, product)
}
}
/// Return all devices.
pub fn devices(&self) -> Devices {
self.find(None, None)
}
}
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