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#![cfg(any(target_os = "linux", target_os = "android"))]
#![allow(non_camel_case_types)]
#[macro_use]
extern crate bitflags;
#[macro_use]
extern crate nix;
extern crate libc;
extern crate fixedbitset;
extern crate num;
pub mod raw;
use std::os::unix::io::*;
use std::os::unix::ffi::*;
use std::path::Path;
use std::ffi::CString;
use std::mem::size_of;
use fixedbitset::FixedBitSet;
use num::traits::WrappingSub;
use nix::Error;
pub use Key::*;
pub use FFEffect::*;
pub use Synchronization::*;
use raw::*;
#[link(name = "rt")]
extern {
fn clock_gettime(clkid: libc::c_int, res: *mut libc::timespec);
}
macro_rules! do_ioctl {
($name:ident($($arg:expr),+)) => {{
unsafe { ::raw::$name($($arg,)+) }?
}}
}
bitflags! {
pub flags Types: u32 {
const SYNCHRONIZATION = 1 << 0x00,
const KEY = 1 << 0x01,
const RELATIVE = 1 << 0x02,
const ABSOLUTE = 1 << 0x03,
const MISC = 1 << 0x04,
const SWITCH = 1 << 0x05,
const LED = 1 << 0x11,
const SOUND = 1 << 0x12,
const REPEAT = 1 << 0x14,
const FORCEFEEDBACK = 1 << 0x15,
const POWER = 1 << 0x16,
const FORCEFEEDBACKSTATUS = 1 << 0x17,
}
}
bitflags! {
pub flags Props: u32 {
const POINTER = 1 << 0x00,
const DIRECT = 1 << 0x01,
const BUTTONPAD = 1 << 0x02,
const SEMI_MT = 1 << 0x03,
const TOPBUTTONPAD = 1 << 0x04,
const POINTING_STICK = 1 << 0x05,
const ACCELEROMETER = 1 << 0x06
}
}
include!("scancodes.rs");
bitflags! {
pub flags RelativeAxis: u32 {
const REL_X = 1 << 0x00,
const REL_Y = 1 << 0x01,
const REL_Z = 1 << 0x02,
const REL_RX = 1 << 0x03,
const REL_RY = 1 << 0x04,
const REL_RZ = 1 << 0x05,
const REL_HWHEEL = 1 << 0x06,
const REL_DIAL = 1 << 0x07,
const REL_WHEEL = 1 << 0x08,
const REL_MISC = 1 << 0x09,
}
}
bitflags! {
pub flags AbsoluteAxis: u64 {
const ABS_X = 1 << 0x00,
const ABS_Y = 1 << 0x01,
const ABS_Z = 1 << 0x02,
const ABS_RX = 1 << 0x03,
const ABS_RY = 1 << 0x04,
const ABS_RZ = 1 << 0x05,
const ABS_THROTTLE = 1 << 0x06,
const ABS_RUDDER = 1 << 0x07,
const ABS_WHEEL = 1 << 0x08,
const ABS_GAS = 1 << 0x09,
const ABS_BRAKE = 1 << 0x0a,
const ABS_HAT0X = 1 << 0x10,
const ABS_HAT0Y = 1 << 0x11,
const ABS_HAT1X = 1 << 0x12,
const ABS_HAT1Y = 1 << 0x13,
const ABS_HAT2X = 1 << 0x14,
const ABS_HAT2Y = 1 << 0x15,
const ABS_HAT3X = 1 << 0x16,
const ABS_HAT3Y = 1 << 0x17,
const ABS_PRESSURE = 1 << 0x18,
const ABS_DISTANCE = 1 << 0x19,
const ABS_TILT_X = 1 << 0x1a,
const ABS_TILT_Y = 1 << 0x1b,
const ABS_TOOL_WIDTH = 1 << 0x1c,
const ABS_VOLUME = 1 << 0x20,
const ABS_MISC = 1 << 0x28,
const ABS_MT_SLOT = 1 << 0x2f,
const ABS_MT_TOUCH_MAJOR = 1 << 0x30,
const ABS_MT_TOUCH_MINOR = 1 << 0x31,
const ABS_MT_WIDTH_MAJOR = 1 << 0x32,
const ABS_MT_WIDTH_MINOR = 1 << 0x33,
const ABS_MT_ORIENTATION = 1 << 0x34,
const ABS_MT_POSITION_X = 1 << 0x35,
const ABS_MT_POSITION_Y = 1 << 0x36,
const ABS_MT_TOOL_TYPE = 1 << 0x37,
const ABS_MT_BLOB_ID = 1 << 0x38,
const ABS_MT_TRACKING_ID = 1 << 0x39,
const ABS_MT_PRESSURE = 1 << 0x3a,
const ABS_MT_DISTANCE = 1 << 0x3b,
const ABS_MT_TOOL_X = 1 << 0x3c,
const ABS_MT_TOOL_Y = 1 << 0x3d,
}
}
bitflags! {
pub flags Switch: u32 {
const SW_LID = 1 << 0x00,
const SW_TABLET_MODE = 1 << 0x01,
const SW_HEADPHONE_INSERT = 1 << 0x02,
const SW_RFKILL_ALL = 1 << 0x03,
const SW_MICROPHONE_INSERT = 1 << 0x04,
const SW_DOCK = 1 << 0x05,
const SW_LINEOUT_INSERT = 1 << 0x06,
const SW_JACK_PHYSICAL_INSERT = 1 << 0x07,
const SW_VIDEOOUT_INSERT = 1 << 0x08,
const SW_CAMERA_LENS_COVER = 1 << 0x09,
const SW_KEYPAD_SLIDE = 1 << 0x0a,
const SW_FRONT_PROXIMITY = 1 << 0x0b,
const SW_ROTATE_LOCK = 1 << 0x0c,
const SW_LINEIN_INSERT = 1 << 0x0d,
const SW_MUTE_DEVICE = 1 << 0x0e,
const SW_PEN_INSERTED = 1 << 0x0f,
const SW_MAX = 0xf,
}
}
bitflags! {
pub flags Led: u32 {
const LED_NUML = 1 << 0x00,
const LED_CAPSL = 1 << 0x01,
const LED_SCROLLL = 1 << 0x02,
const LED_COMPOSE = 1 << 0x03,
const LED_KANA = 1 << 0x04,
const LED_SLEEP = 1 << 0x05,
const LED_SUSPEND = 1 << 0x06,
const LED_MUTE = 1 << 0x07,
const LED_MISC = 1 << 0x08,
const LED_MAIL = 1 << 0x09,
const LED_CHARGING = 1 << 0x0a,
const LED_MAX = 1 << 0x0f,
}
}
bitflags! {
pub flags Misc: u32 {
const MSC_SERIAL = 1 << 0x00,
const MSC_PULSELED = 1 << 0x01,
const MSC_GESTURE = 1 << 0x02,
const MSC_RAW = 1 << 0x03,
const MSC_SCAN = 1 << 0x04,
const MSC_TIMESTAMP = 1 << 0x05,
const MSC_MAX = 1 << 0x07,
}
}
bitflags! {
pub flags FFStatus: u32 {
const FF_STATUS_STOPPED = 1 << 0x00,
const FF_STATUS_PLAYING = 1 << 0x01,
}
}
#[repr(C)]
#[derive(Copy, Clone)]
pub enum FFEffect {
FF_RUMBLE = 0x50,
FF_PERIODIC = 0x51,
FF_CONSTANT = 0x52,
FF_SPRING = 0x53,
FF_FRICTION = 0x54,
FF_DAMPER = 0x55,
FF_INERTIA = 0x56,
FF_RAMP = 0x57,
FF_SQUARE = 0x58,
FF_TRIANGLE = 0x59,
FF_SINE = 0x5a,
FF_SAW_UP = 0x5b,
FF_SAW_DOWN = 0x5c,
FF_CUSTOM = 0x5d,
FF_GAIN = 0x60,
FF_AUTOCENTER = 0x61,
FF_MAX = 0x7f,
}
bitflags! {
pub flags Repeat: u32 {
const REP_DELAY = 1 << 0x00,
const REP_PERIOD = 1 << 0x01,
}
}
bitflags! {
pub flags Sound: u32 {
const SND_CLICK = 1 << 0x00,
const SND_BELL = 1 << 0x01,
const SND_TONE = 1 << 0x02,
}
}
macro_rules! impl_number {
($($t:ident),*) => {
$(impl $t {
#[inline(always)]
pub fn number<T: num::FromPrimitive>(&self) -> T {
let val = self.bits().trailing_zeros();
debug_assert!(self.bits() == 1 << val, "{:?} ought to have only one flag set to be used with .number()", self);
T::from_u32(val).unwrap()
}
})*
}
}
impl_number!(Types, Props, RelativeAxis, AbsoluteAxis, Switch, Led, Misc, FFStatus, Repeat, Sound);
#[repr(C)]
#[derive(Copy, Clone, Debug)]
pub enum Synchronization {
SYN_REPORT = 0,
SYN_CONFIG = 1,
SYN_MT_REPORT = 2,
SYN_DROPPED = 3,
}
#[derive(Clone)]
pub struct DeviceState {
pub timestamp: libc::timeval,
pub key_vals: FixedBitSet,
pub abs_vals: Vec<input_absinfo>,
pub switch_vals: FixedBitSet,
pub led_vals: FixedBitSet,
}
pub struct Device {
fd: RawFd,
ty: Types,
name: CString,
phys: Option<CString>,
uniq: Option<CString>,
id: input_id,
props: Props,
driver_version: (u8, u8, u8),
key_bits: FixedBitSet,
rel: RelativeAxis,
abs: AbsoluteAxis,
switch: Switch,
led: Led,
misc: Misc,
ff: FixedBitSet,
ff_stat: FFStatus,
rep: Repeat,
snd: Sound,
pending_events: Vec<input_event>,
clock: libc::c_int,
last_seen: usize,
state: DeviceState,
}
impl std::fmt::Debug for Device {
fn fmt(&self, f: &mut std::fmt::Formatter) -> std::fmt::Result {
let mut ds = f.debug_struct("Device");
ds.field("name", &self.name).field("fd", &self.fd).field("ty", &self.ty);
if let Some(ref phys) = self.phys {
ds.field("phys", phys);
}
if let Some(ref uniq) = self.uniq {
ds.field("uniq", uniq);
}
ds.field("id", &self.id)
.field("id", &self.id)
.field("props", &self.props)
.field("driver_version", &self.driver_version);
if self.ty.contains(SYNCHRONIZATION) {
}
if self.ty.contains(KEY) {
ds.field("key_bits", &self.key_bits)
.field("key_vals", &self.state.key_vals);
}
if self.ty.contains(RELATIVE) {
ds.field("rel", &self.rel);
}
if self.ty.contains(ABSOLUTE) {
ds.field("abs", &self.abs);
for idx in 0..0x3f {
let abs = 1 << idx;
if (self.abs.bits() & abs) == 1 {
ds.field(&format!("abs_{:x}", idx), &self.state.abs_vals[idx as usize]);
}
}
}
if self.ty.contains(MISC) {
}
if self.ty.contains(SWITCH) {
ds.field("switch", &self.switch)
.field("switch_vals", &self.state.switch_vals);
}
if self.ty.contains(LED) {
ds.field("led", &self.led)
.field("led_vals", &self.state.led_vals);
}
if self.ty.contains(SOUND) {
ds.field("snd", &self.snd);
}
if self.ty.contains(REPEAT) {
ds.field("rep", &self.rep);
}
if self.ty.contains(FORCEFEEDBACK) {
ds.field("ff", &self.ff);
}
if self.ty.contains(POWER) {
}
if self.ty.contains(FORCEFEEDBACKSTATUS) {
ds.field("ff_stat", &self.ff_stat);
}
ds.finish()
}
}
fn bus_name(x: u16) -> &'static str {
match x {
0x1 => "PCI",
0x2 => "ISA Plug 'n Play",
0x3 => "USB",
0x4 => "HIL",
0x5 => "Bluetooth",
0x6 => "Virtual",
0x10 => "ISA",
0x11 => "i8042",
0x12 => "XTKBD",
0x13 => "RS232",
0x14 => "Gameport",
0x15 => "Parallel Port",
0x16 => "Amiga",
0x17 => "ADB",
0x18 => "I2C",
0x19 => "Host",
0x1A => "GSC",
0x1B => "Atari",
0x1C => "SPI",
_ => "Unknown",
}
}
impl std::fmt::Display for Device {
fn fmt(&self, f: &mut std::fmt::Formatter) -> std::fmt::Result {
try!(writeln!(f, "{:?}", self.name));
try!(writeln!(f, " Driver version: {}.{}.{}", self.driver_version.0, self.driver_version.1, self.driver_version.2));
if let Some(ref phys) = self.phys {
try!(writeln!(f, " Physical address: {:?}", phys));
}
if let Some(ref uniq) = self.uniq {
try!(writeln!(f, " Unique name: {:?}", uniq));
}
try!(writeln!(f, " Bus: {}", bus_name(self.id.bustype)));
try!(writeln!(f, " Vendor: 0x{:x}", self.id.vendor));
try!(writeln!(f, " Product: 0x{:x}", self.id.product));
try!(writeln!(f, " Version: 0x{:x}", self.id.version));
try!(writeln!(f, " Properties: {:?}", self.props));
if self.ty.contains(SYNCHRONIZATION) {
}
if self.ty.contains(KEY) {
try!(writeln!(f, " Keys supported:"));
for key_idx in 0..self.key_bits.len() {
if self.key_bits.contains(key_idx) {
try!(writeln!(f, " {:?} ({}index {})",
unsafe { std::mem::transmute::<_, Key>(key_idx as libc::c_int) },
if self.state.key_vals.contains(key_idx) { "pressed, " } else { "" },
key_idx));
}
}
}
if self.ty.contains(RELATIVE) {
try!(writeln!(f, " Relative Axes: {:?}", self.rel));
}
if self.ty.contains(ABSOLUTE) {
try!(writeln!(f, " Absolute Axes:"));
for idx in 0..0x3f {
let abs = 1<< idx;
if self.abs.bits() & abs != 0 {
try!(writeln!(f, " {:?} ({:?}, index {})",
AbsoluteAxis::from_bits(abs).unwrap(),
self.state.abs_vals[idx as usize],
idx));
}
}
}
if self.ty.contains(MISC) {
try!(writeln!(f, " Miscellaneous capabilities: {:?}", self.misc));
}
if self.ty.contains(SWITCH) {
try!(writeln!(f, " Switches:"));
for idx in 0..0xf {
let sw = 1 << idx;
if sw < SW_MAX.bits() && self.switch.bits() & sw == 1 {
try!(writeln!(f, " {:?} ({:?}, index {})",
Switch::from_bits(sw).unwrap(),
self.state.switch_vals[idx as usize],
idx));
}
}
}
if self.ty.contains(LED) {
try!(writeln!(f, " LEDs:"));
for idx in 0..0xf {
let led = 1 << idx;
if led < LED_MAX.bits() && self.led.bits() & led == 1 {
try!(writeln!(f, " {:?} ({:?}, index {})",
Led::from_bits(led).unwrap(),
self.state.led_vals[idx as usize],
idx));
}
}
}
if self.ty.contains(SOUND) {
try!(writeln!(f, " Sound: {:?}", self.snd));
}
if self.ty.contains(REPEAT) {
try!(writeln!(f, " Repeats: {:?}", self.rep));
}
if self.ty.contains(FORCEFEEDBACK) {
try!(writeln!(f, " Force Feedback supported"));
}
if self.ty.contains(POWER) {
try!(writeln!(f, " Power supported"));
}
if self.ty.contains(FORCEFEEDBACKSTATUS) {
try!(writeln!(f, " Force Feedback status supported"));
}
Ok(())
}
}
impl Drop for Device {
fn drop(&mut self) {
unsafe { libc::close(self.fd); }
}
}
impl Device {
pub fn fd(&self) -> RawFd {
self.fd
}
pub fn events_supported(&self) -> Types {
self.ty
}
pub fn name(&self) -> &CString {
&self.name
}
pub fn physical_path(&self) -> &Option<CString> {
&self.phys
}
pub fn unique_name(&self) -> &Option<CString> {
&self.uniq
}
pub fn input_id(&self) -> input_id {
self.id
}
pub fn properties(&self) -> Props {
self.props
}
pub fn driver_version(&self) -> (u8, u8, u8) {
self.driver_version
}
pub fn keys_supported(&self) -> &FixedBitSet {
&self.key_bits
}
pub fn relative_axes_supported(&self) -> RelativeAxis {
self.rel
}
pub fn absolute_axes_supported(&self) -> AbsoluteAxis {
self.abs
}
pub fn switches_supported(&self) -> Switch {
self.switch
}
pub fn leds_supported(&self) -> Led {
self.led
}
pub fn misc_properties(&self) -> Misc {
self.misc
}
pub fn repeats_supported(&self) -> Repeat {
self.rep
}
pub fn sounds_supported(&self) -> Sound {
self.snd
}
pub fn state(&self) -> &DeviceState {
&self.state
}
pub fn open(path: &AsRef<Path>) -> Result<Device, Error> {
let cstr = match CString::new(path.as_ref().as_os_str().as_bytes()) {
Ok(s) => s,
Err(e) => return Err(Error::InvalidPath),
};
let fd = unsafe { libc::open(cstr.as_ptr(), libc::O_NONBLOCK | libc::O_RDWR | libc::O_CLOEXEC, 0) };
if fd == -1 {
return Err(Error::from_errno(::nix::Errno::last()));
}
let mut dev = Device {
fd: fd,
ty: Types::empty(),
name: unsafe { CString::from_vec_unchecked(Vec::new()) },
phys: None,
uniq: None,
id: unsafe { std::mem::zeroed() },
props: Props::empty(),
driver_version: (0, 0, 0),
key_bits: FixedBitSet::with_capacity(KEY_MAX as usize),
rel: RelativeAxis::empty(),
abs: AbsoluteAxis::empty(),
switch: Switch::empty(),
led: Led::empty(),
misc: Misc::empty(),
ff: FixedBitSet::with_capacity(FF_MAX as usize + 1),
ff_stat: FFStatus::empty(),
rep: Repeat::empty(),
snd: Sound::empty(),
pending_events: Vec::with_capacity(64),
last_seen: 0,
state: DeviceState {
timestamp: libc::timeval { tv_sec: 0, tv_usec: 0 },
key_vals: FixedBitSet::with_capacity(KEY_MAX as usize),
abs_vals: vec![],
switch_vals: FixedBitSet::with_capacity(0x10),
led_vals: FixedBitSet::with_capacity(0x10),
},
clock: libc::CLOCK_REALTIME
};
let mut bits: u32 = 0;
let mut bits64: u64 = 0;
let mut vec = Vec::with_capacity(256);
do_ioctl!(eviocgbit(fd, 0, 4, &mut bits as *mut u32 as *mut u8));
dev.ty = Types::from_bits(bits).expect("evdev: unexpected type bits! report a bug");
let dev_len = do_ioctl!(eviocgname(fd, vec.as_mut_ptr(), 255));
unsafe { vec.set_len(dev_len as usize - 1) };
dev.name = CString::new(vec.clone()).unwrap();
match unsafe { eviocgphys(fd, vec.as_mut_ptr(), 255) } {
Ok(phys_len) => {
if phys_len > 0 {
unsafe { vec.set_len(phys_len as usize - 1) };
dev.phys = Some(CString::new(vec.clone()).unwrap());
}
},
Err(_) => { }
}
match unsafe { eviocguniq(fd, vec.as_mut_ptr(), 255) } {
Ok(uniq_len) => {
if uniq_len > 0 {
unsafe { vec.set_len(uniq_len as usize - 1) };
dev.uniq = Some(CString::new(vec.clone()).unwrap());
}
},
Err(_) => { }
}
do_ioctl!(eviocgid(fd, &mut dev.id));
let mut driver_version: i32 = 0;
do_ioctl!(eviocgversion(fd, &mut driver_version));
dev.driver_version =
(((driver_version >> 16) & 0xff) as u8,
((driver_version >> 8) & 0xff) as u8,
(driver_version & 0xff) as u8);
do_ioctl!(eviocgprop(fd, &mut bits as *mut u32 as *mut u8, 0x1f));
dev.props = Props::from_bits(bits).expect("evdev: unexpected prop bits! report a bug");
if dev.ty.contains(KEY) {
do_ioctl!(eviocgbit(fd, KEY.number(), dev.key_bits.len() as libc::c_int, dev.key_bits.as_mut_slice().as_mut_ptr() as *mut u8));
}
if dev.ty.contains(RELATIVE) {
do_ioctl!(eviocgbit(fd, RELATIVE.number(), 0xf, &mut bits as *mut u32 as *mut u8));
dev.rel = RelativeAxis::from_bits(bits).expect("evdev: unexpected rel bits! report a bug");
}
if dev.ty.contains(ABSOLUTE) {
do_ioctl!(eviocgbit(fd, ABSOLUTE.number(), 0x3f, &mut bits64 as *mut u64 as *mut u8));
dev.abs = AbsoluteAxis::from_bits(bits64).expect("evdev: unexpected abs bits! report a bug");
dev.state.abs_vals = vec![input_absinfo::default(); 0x3f];
}
if dev.ty.contains(SWITCH) {
do_ioctl!(eviocgbit(fd, SWITCH.number(), 0xf, &mut bits as *mut u32 as *mut u8));
dev.switch = Switch::from_bits(bits).expect("evdev: unexpected switch bits! report a bug");
}
if dev.ty.contains(LED) {
do_ioctl!(eviocgbit(fd, LED.number(), 0xf, &mut bits as *mut u32 as *mut u8));
dev.led = Led::from_bits(bits).expect("evdev: unexpected led bits! report a bug");
}
if dev.ty.contains(MISC) {
do_ioctl!(eviocgbit(fd, MISC.number(), 0x7, &mut bits as *mut u32 as *mut u8));
dev.misc = Misc::from_bits(bits).expect("evdev: unexpected misc bits! report a bug");
}
if dev.ty.contains(SOUND) {
do_ioctl!(eviocgbit(fd, SOUND.number(), 0x7, &mut bits as *mut u32 as *mut u8));
dev.snd = Sound::from_bits(bits).expect("evdev: unexpected sound bits! report a bug");
}
try!(dev.sync_state());
Ok(dev)
}
pub fn sync_state(&mut self) -> Result<(), Error> {
if self.ty.contains(KEY) {
do_ioctl!(eviocgkey(self.fd, self.state.key_vals.as_mut_slice().as_mut_ptr() as *mut u32 as *mut u8, self.state.key_vals.len()));
}
if self.ty.contains(ABSOLUTE) {
for idx in 0..0x28 {
let abs = 1 << idx;
if abs < ABS_MT_SLOT.bits() && self.abs.bits() & abs != 0 {
do_ioctl!(eviocgabs(self.fd, idx as u32, &mut self.state.abs_vals[idx as usize]));
}
}
}
if self.ty.contains(SWITCH) {
do_ioctl!(eviocgsw(self.fd, self.state.switch_vals.as_mut_slice().as_mut_ptr() as *mut u32 as *mut u8, self.state.switch_vals.len()));
}
if self.ty.contains(LED) {
do_ioctl!(eviocgled(self.fd, self.state.led_vals.as_mut_slice().as_mut_ptr() as *mut u32 as *mut u8, self.state.led_vals.len()));
}
Ok(())
}
fn compensate_dropped(&mut self) -> Result<(), Error> {
let mut drop_from = None;
for (idx, event) in self.pending_events[self.last_seen..].iter().enumerate() {
if event._type == SYN_DROPPED as u16 {
drop_from = Some(idx);
break
}
}
if let Some(idx) = drop_from {
let mut prev_report = 0;
for (idx, event) in self.pending_events[..idx].iter().enumerate().rev() {
if event._type == SYN_REPORT as u16 {
prev_report = idx;
break;
}
}
self.pending_events.truncate(prev_report);
} else {
return Ok(())
}
let old_state = self.state.clone();
try!(self.sync_state());
let mut time = unsafe { std::mem::zeroed() };
unsafe { clock_gettime(self.clock, &mut time); }
let time = libc::timeval {
tv_sec: time.tv_sec,
tv_usec: time.tv_nsec / 1000,
};
if self.ty.contains(KEY) {
for key_idx in 0..self.key_bits.len() {
if self.key_bits.contains(key_idx) {
if old_state.key_vals[key_idx] != self.state.key_vals[key_idx] {
self.pending_events.push(raw::input_event {
time: time,
_type: KEY.number(),
code: key_idx as u16,
value: if self.state.key_vals[key_idx] { 1 } else { 0 },
});
}
}
}
}
if self.ty.contains(ABSOLUTE) {
for idx in 0..0x3f {
let abs = 1 << idx;
if self.abs.bits() & abs != 0 {
if old_state.abs_vals[idx as usize] != self.state.abs_vals[idx as usize] {
self.pending_events.push(raw::input_event {
time: time,
_type: ABSOLUTE.number(),
code: idx as u16,
value: self.state.abs_vals[idx as usize].value,
});
}
}
}
}
if self.ty.contains(SWITCH) {
for idx in 0..0xf {
let sw = 1 << idx;
if sw < SW_MAX.bits() && self.switch.bits() & sw == 1 {
if old_state.switch_vals[idx as usize] != self.state.switch_vals[idx as usize] {
self.pending_events.push(raw::input_event {
time: time,
_type: SWITCH.number(),
code: idx as u16,
value: if self.state.switch_vals[idx as usize] { 1 } else { 0 },
});
}
}
}
}
if self.ty.contains(LED) {
for idx in 0..0xf {
let led = 1 << idx;
if led < LED_MAX.bits() && self.led.bits() & led == 1 {
if old_state.led_vals[idx as usize] != self.state.led_vals[idx as usize] {
self.pending_events.push(raw::input_event {
time: time,
_type: LED.number(),
code: idx as u16,
value: if self.state.led_vals[idx as usize] { 1 } else { 0 },
});
}
}
}
}
self.pending_events.push(raw::input_event {
time: time,
_type: SYNCHRONIZATION.number(),
code: SYN_REPORT as u16,
value: 0,
});
Ok(())
}
fn fill_events(&mut self) -> Result<(), Error> {
let mut buf = &mut self.pending_events;
loop {
buf.reserve(20);
let pre_len = buf.len();
let sz = unsafe {
libc::read(self.fd,
buf.as_mut_ptr()
.offset(pre_len as isize) as *mut libc::c_void,
(size_of::<raw::input_event>() * (buf.capacity() - pre_len)) as libc::size_t)
};
if sz == -1 {
let errno = ::nix::Errno::last();
if errno != ::nix::Errno::EAGAIN {
return Err(Error::from_errno(errno));
} else {
break;
}
} else {
unsafe {
buf.set_len(pre_len + (sz as usize / size_of::<raw::input_event>()));
}
}
}
Ok(())
}
pub fn events_no_sync(&mut self) -> Result<RawEvents, Error> {
try!(self.fill_events());
Ok(RawEvents::new(self))
}
pub fn events(&mut self) -> Result<RawEvents, Error> {
try!(self.fill_events());
try!(self.compensate_dropped());
Ok(RawEvents(self))
}
}
pub struct Events<'a>(&'a mut Device);
pub struct RawEvents<'a>(&'a mut Device);
impl<'a> RawEvents<'a> {
fn new(dev: &'a mut Device) -> RawEvents<'a> {
dev.pending_events.reverse();
RawEvents(dev)
}
}
impl<'a> Drop for RawEvents<'a> {
fn drop(&mut self) {
self.0.pending_events.reverse();
self.0.last_seen = self.0.pending_events.len();
}
}
impl<'a> Iterator for RawEvents<'a> {
type Item = raw::input_event;
#[inline(always)]
fn next(&mut self) -> Option<raw::input_event> {
self.0.pending_events.pop()
}
}
pub fn enumerate() -> Vec<Device> {
let mut res = Vec::new();
if let Ok(dir) = std::fs::read_dir("/dev/input") {
for entry in dir {
if let Ok(entry) = entry {
if let Ok(dev) = Device::open(&entry.path()) {
res.push(dev)
}
}
}
}
res
}
#[cfg(test)] mod test { include!("tests.rs"); }