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|
use std::{collections::HashSet, pin::pin, time::Duration};
use bluer::{
Adapter, AdapterEvent, Device, DeviceEvent, DeviceProperty, DiscoveryFilter,
DiscoveryTransport, Session, Uuid, gatt::remote::Characteristic,
};
use evdev::{
AbsInfo, AbsoluteAxisCode, AttributeSet, EventType, InputEvent, KeyCode, PropType,
SynchronizationCode, UinputAbsSetup, uinput::VirtualDevice,
};
use tokio::{select, time::interval};
use tokio_stream::StreamExt;
const HID_SERVICE: Result<Uuid, uuid::Error> =
Uuid::try_parse("00001812-0000-1000-8000-00805f9b34fb");
const REPORT_REF: Result<Uuid, uuid::Error> =
Uuid::try_parse("00002908-0000-1000-8000-00805f9b34fb");
// const MAGIC_REPORT: u8 = 240;
const BUTTON_REPORT: u8 = 251;
const TOUCH_REPORT: u8 = 252;
struct RemoteCharateristics {
touch: Characteristic,
button: Characteristic,
}
impl RemoteCharateristics {
async fn get(device: &Device) -> bluer::Result<Self> {
let mut touch = None;
let mut button = None;
for service in device.services().await? {
if service.uuid().await? == HID_SERVICE.unwrap() {
for characteristic in service.characteristics().await? {
for descriptor in characteristic.descriptors().await? {
if descriptor.uuid().await? == REPORT_REF.unwrap() {
let resp = descriptor.read().await?;
match resp[0] {
// MAGIC_REPORT => characteristic.write(&[0xf0, 0x00]).await?,
TOUCH_REPORT => touch = Some(characteristic.clone()),
BUTTON_REPORT => button = Some(characteristic.clone()),
_ => {}
}
}
}
}
}
}
Ok(Self {
touch: touch.expect("did not find touch characteristic"),
button: button.expect("did not find button characteristic"),
})
}
}
async fn find_remote(adapter: &Adapter, rssi_thresh: i16) -> bluer::Result<Device> {
let mut uuids = HashSet::new();
uuids.insert(HID_SERVICE.unwrap());
adapter
.set_discovery_filter(DiscoveryFilter {
transport: DiscoveryTransport::Le,
rssi: Some(rssi_thresh),
uuids,
..Default::default()
})
.await?;
let mut discover = pin!(adapter.discover_devices().await?);
while let Some(evt) = discover.next().await {
if let AdapterEvent::DeviceAdded(mac) = evt {
let device = adapter.device(mac)?;
if let Some(data) = device.manufacturer_data().await? {
if data.contains_key(&0x4c) {
return Ok(device);
}
}
}
}
panic!("discovery ended");
}
async fn run(adapter: &Adapter) -> bluer::Result<()> {
eprintln!("DBG searching");
let remote = find_remote(&adapter, -25).await?;
if !remote.is_paired().await? {
eprintln!("DBG pairing");
remote.pair().await?;
}
eprintln!("DBG connecting");
remote.connect().await?;
let mut remote_events = pin!(remote.events().await?);
let chars = RemoteCharateristics::get(&remote).await?;
let mut touch_stream = pin!(chars.touch.notify().await?);
let mut button_stream = pin!(chars.button.notify().await?);
eprintln!("DBG starting");
let mut keys = AttributeSet::new();
keys.insert(KeyCode::BTN_TOUCH);
keys.insert(KeyCode::BTN_TOOL_FINGER);
keys.insert(KeyCode::BTN_LEFT);
let mut props = AttributeSet::new();
props.insert(PropType::POINTER);
let mut uinput = VirtualDevice::builder()
.unwrap()
.name("Siri Remote")
.with_properties(&props)
.unwrap()
.with_keys(&keys)
.unwrap()
.with_absolute_axis(&UinputAbsSetup::new(
AbsoluteAxisCode::ABS_X,
AbsInfo::new(0, -2048, 2048, 32, 0, 16),
))
.unwrap()
.with_absolute_axis(&UinputAbsSetup::new(
AbsoluteAxisCode::ABS_Y,
AbsInfo::new(0, -2048, 2048, 32, 0, 16),
))
.unwrap()
.build()
.unwrap();
let mut timer = interval(Duration::from_millis(1));
let mut x = 0f32;
let mut y = 0f32;
let mut tx = 0f32;
let mut ty = 0f32;
let mut touch = 0;
'main: loop {
select! {
ev = remote_events.next() => {
if let Some(DeviceEvent::PropertyChanged(DeviceProperty::Connected(false))) = ev {
break 'main;
}
}
ev = touch_stream.next() => {
let ev = ev.unwrap();
let touch_next = if ev[3] > 0 { 1 } else { 0 };
if touch_next > 0 {
tx = ((((ev[5] & 15) as u16) << 8) + ev[4] as u16) as f32;
ty = ((((ev[5] & !15) as u16) >> 4) + ((ev[6] as u16) << 4)) as f32;
if tx >= 2048.0 {
tx -= 4096.0;
}
if ty >= 2048.0 {
ty -= 4096.0;
}
if touch == 0 {
x = tx;
y = ty;
}
}
touch = touch_next;
// ts = (((ev[2] as u16) << 8) + (ev[1] as u16)) as i32;
},
ev = button_stream.next() => {
let ev = ev.unwrap();
match (ev[0], ev[1]) {
(8, 0) => {
uinput
.emit(&[
InputEvent::new(EventType::KEY.0, KeyCode::BTN_LEFT.0, 1),
InputEvent::new(
EventType::SYNCHRONIZATION.0,
SynchronizationCode::SYN_REPORT.0,
0,
),
])
.unwrap();
},
(0, 0) => {
uinput
.emit(&[
InputEvent::new(EventType::KEY.0, KeyCode::BTN_LEFT.0, 0),
InputEvent::new(
EventType::SYNCHRONIZATION.0,
SynchronizationCode::SYN_REPORT.0,
0,
),
])
.unwrap();
},
(_, _) => (),
}
}
_ = timer.tick() => {
x = 0.95 * x + 0.05 * tx;
y = 0.95 * y + 0.05 * ty;
uinput
.emit(&[
InputEvent::new(EventType::KEY.0, KeyCode::BTN_TOUCH.0, touch),
InputEvent::new(EventType::KEY.0, KeyCode::BTN_TOOL_FINGER.0, touch),
InputEvent::new(EventType::ABSOLUTE.0, AbsoluteAxisCode::ABS_X.0, x as i32),
InputEvent::new(EventType::ABSOLUTE.0, AbsoluteAxisCode::ABS_Y.0, -y as i32),
InputEvent::new(
EventType::SYNCHRONIZATION.0,
SynchronizationCode::SYN_REPORT.0,
0,
),
])
.unwrap();
},
};
}
Ok(())
}
#[tokio::main(flavor = "current_thread")]
async fn main() -> bluer::Result<()> {
let session = Session::new().await?;
let adapter = session.default_adapter().await?;
loop {
if let Err(e) = run(&adapter).await {
eprintln!("ERR {e}");
}
}
}
|
