Method new

api/src/vfs/dev/event.rs:59–93

(mut device: AxInputDevice)

impl EventDev {
    pub fn new(mut device: AxInputDevice) -> Self {
        let mut ev_bits = Bitmap::new();
        for i in 0..EventType::COUNT {
            let Some(ty) = EventType::from_repr(i) else {
                continue;
            };
            if device
                .get_event_bits(ty, &mut [])
                .is_ok_and(|success| success)
            {
                ev_bits.set(i as usize, true);
            }
        }

        // let mut out = [0u8; 2000];
        // if device.get_event_bits(EventType::Absolute, &mut out).unwrap() {
        //     let mut bits = Vec::new();
        //     for i in 0..EventType::Absolute.bits_count() {
        //         if (out[i / 8] >> (i % 8)) & 1 != 0 {
        //             bits.push(i);
        //         }
        //     }
        //     warn!("{bits:?}");
        // } else {
        //     warn!("failure");
        // }
        Self {
            inner: Mutex::new(Inner {
                device,
                read_ahead: None,
                key_state: Bitmap::new(),
            }),
            ev_bits,
        }
    }

    fn get_event_bits(&self, arg: usize, size: usize, ty: u8) -> AxResult<usize> {
        let bits = UserPtr::<u8>::from(arg).get_as_mut_slice(size)?;