enricobuehler
ae71e4628d
The Linux + Windows native clients (clients/{linux,windows}/src/gamepad.rs) now
capture and send the Steam Controller / Steam Deck rich inputs, so a real Deck
(off Steam Input) or a Steam Controller on a desktop client drives the host's
virtual hid-steam pad end-to-end:
- Set SDL's HIDAPI Steam hints (SDL_JOYSTICK_HIDAPI_STEAMDECK / _STEAM) before
init so SDL opens Valve devices directly (paddles + both trackpads + gyro as
first-class SDL gamepad inputs).
- Detect the Deck/SC by VID/PID (0x28DE + 0x1205 / 0x1102 / 0x1142) ->
GamepadPref::SteamDeck (there is no SDL gamepad type for it), so the host
builds the virtual Deck with the right identity.
- Map the SDL paddle + Misc1 buttons -> BTN_PADDLE1..4 / BTN_MISC1 (a free win
for Xbox Elite paddles too).
- Route a SECOND touchpad -> RichInput::TouchpadEx (SDL touchpad 0 = left ->
surface 1, 1 = right -> surface 2, signed coords); a single touchpad keeps the
legacy Touchpad. New forward_touch() helper centralizes the choice.
- Track held touchpad contacts per (surface, finger) and lift them on pad
switch/detach so a contact held at that moment can't stick.
- Sensor (gyro/accel) capture was already generic across pad types.
Linux client builds + clippy clean; the Windows client is a near-verbatim
mirror (windows CI compiles it). On a Deck in Game Mode, Steam Input still holds
the device — the user disables Steam Input for the client (the Decky UX, next);
on a desktop client (or a Deck with Steam Input off) the hints just work.
Remaining M4: Decky Disable-Steam-Input UX, Apple/Android parity, and the C-ABI
PunktfunkRichInputEx + send_rich_input2 (Apple/embedder send path). Not pushed.
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
705 lines
28 KiB
Rust
705 lines
28 KiB
Rust
//! App-lifetime gamepad service over SDL3 (mirrors the Swift client's `GamepadManager` +
|
||
//! `GamepadCapture`/`GamepadFeedback`).
|
||
//!
|
||
//! One worker thread owns SDL for the process lifetime: it tracks connected pads for the
|
||
//! Settings UI, selects the ONE controller forwarded as pad 0 (user pin, else the most
|
||
//! recently connected), and — while a session is attached — forwards buttons/axes,
|
||
//! DualSense touchpad contacts and motion samples (0xCC), and renders feedback: rumble on
|
||
//! every pad, lightbar via SDL, and on a real DualSense the raw effects packet
|
||
//! (adaptive-trigger blocks replayed verbatim, player LEDs). Held state is zeroed on the
|
||
//! wire when the active pad switches or the session detaches, so nothing sticks down.
|
||
//!
|
||
//! This thread is also the single consumer of the rumble and HID-output pull planes.
|
||
|
||
use punktfunk_core::client::NativeClient;
|
||
use punktfunk_core::config::GamepadPref;
|
||
use punktfunk_core::input::{gamepad as wire, InputEvent, InputKind};
|
||
use punktfunk_core::quic::{HidOutput, RichInput};
|
||
use std::collections::HashMap;
|
||
use std::sync::mpsc::{Receiver, Sender};
|
||
use std::sync::{Arc, Mutex};
|
||
use std::time::Duration;
|
||
|
||
/// Motion scale constants, shared convention with the Swift client (`GamepadWire`):
|
||
/// derived from hid-playstation's math over the host's fixed calibration blob. SDL hands
|
||
/// us gyro in rad/s and accel in m/s²; the DualSense report wants raw LSBs.
|
||
const GYRO_LSB_PER_RAD_S: f32 = 20.0 * 180.0 / std::f32::consts::PI;
|
||
const ACCEL_LSB_PER_G: f32 = 10_000.0;
|
||
const G: f32 = 9.80665;
|
||
|
||
/// The controller "escape" chord (Moonlight convention): L1 + R1 + Start + Select held
|
||
/// together. Intercepted by the client to leave fullscreen + release input capture — the
|
||
/// Deck has no F11 key and fullscreen hides the window chrome, so with a controller this
|
||
/// is the only way out. Four simultaneous buttons that no game uses as a deliberate
|
||
/// combo, so it can't be triggered by normal play. Still forwarded to the host (the user
|
||
/// is leaving anyway); we only also raise the escape signal.
|
||
const ESCAPE_CHORD: [u32; 4] = [wire::BTN_LB, wire::BTN_RB, wire::BTN_START, wire::BTN_BACK];
|
||
|
||
#[derive(Clone, Debug)]
|
||
pub struct PadInfo {
|
||
pub id: u32,
|
||
pub name: String,
|
||
/// The virtual pad "Automatic" resolves to for this physical controller (so the host creates a
|
||
/// matching pad: DualSense → DualSense, DS4 → DualShock 4, Xbox One/Series → Xbox One, anything
|
||
/// else → Xbox 360). Drives [`GamepadService::auto_pref`] and the rich-feedback render path.
|
||
pub pref: GamepadPref,
|
||
}
|
||
|
||
impl PadInfo {
|
||
/// True for a real DualSense — the only pad whose lightbar / player-LED / adaptive-trigger
|
||
/// feedback we replay as raw DS5 HID effect packets (a DS4 uses SDL's generic `set_led`).
|
||
fn is_dualsense(&self) -> bool {
|
||
self.pref == GamepadPref::DualSense
|
||
}
|
||
|
||
/// A short controller-kind label for the Settings list (`""` for a plain Xbox/standard pad).
|
||
pub fn kind_label(&self) -> &'static str {
|
||
match self.pref {
|
||
GamepadPref::DualSense => "DualSense",
|
||
GamepadPref::DualShock4 => "DualShock 4",
|
||
GamepadPref::XboxOne => "Xbox One",
|
||
GamepadPref::SteamDeck => "Steam Deck",
|
||
_ => "",
|
||
}
|
||
}
|
||
}
|
||
|
||
/// Map the SDL-reported controller type to the virtual pad we'd ask the host to create.
|
||
fn pref_for_type(t: sdl3::gamepad::GamepadType) -> GamepadPref {
|
||
use sdl3::gamepad::GamepadType as T;
|
||
match t {
|
||
T::PS5 => GamepadPref::DualSense,
|
||
T::PS4 => GamepadPref::DualShock4,
|
||
T::XboxOne => GamepadPref::XboxOne,
|
||
_ => GamepadPref::Xbox360,
|
||
}
|
||
}
|
||
|
||
enum Ctl {
|
||
Attach(Arc<NativeClient>),
|
||
Detach,
|
||
Pin(Option<u32>),
|
||
}
|
||
|
||
#[derive(Clone)]
|
||
pub struct GamepadService {
|
||
pads: Arc<Mutex<Vec<PadInfo>>>,
|
||
active: Arc<Mutex<Option<PadInfo>>>,
|
||
pinned: Arc<Mutex<Option<u32>>>,
|
||
ctl: Sender<Ctl>,
|
||
/// Fires once per press of the [`ESCAPE_CHORD`]; the stream page consumes it to leave
|
||
/// fullscreen + release capture.
|
||
escape_rx: async_channel::Receiver<()>,
|
||
}
|
||
|
||
impl GamepadService {
|
||
pub fn start() -> GamepadService {
|
||
let pads = Arc::new(Mutex::new(Vec::new()));
|
||
let active = Arc::new(Mutex::new(None));
|
||
let pinned = Arc::new(Mutex::new(None));
|
||
let (ctl, ctl_rx) = std::sync::mpsc::channel();
|
||
let (escape_tx, escape_rx) = async_channel::unbounded();
|
||
let (p, a, pin) = (pads.clone(), active.clone(), pinned.clone());
|
||
if let Err(e) = std::thread::Builder::new()
|
||
.name("punktfunk-gamepad".into())
|
||
.spawn(move || {
|
||
if let Err(e) = run(&p, &a, &pin, &ctl_rx, &escape_tx) {
|
||
tracing::warn!(error = %e, "gamepad service ended — pads disabled");
|
||
}
|
||
})
|
||
{
|
||
tracing::warn!(error = %e, "gamepad service failed to start");
|
||
}
|
||
GamepadService {
|
||
pads,
|
||
active,
|
||
pinned,
|
||
ctl,
|
||
escape_rx,
|
||
}
|
||
}
|
||
|
||
/// A receiver that yields one `()` each time the controller escape chord is pressed.
|
||
/// A fresh clone per call (shared mpmc channel); the stream page spawns a future on it.
|
||
pub fn escape_events(&self) -> async_channel::Receiver<()> {
|
||
self.escape_rx.clone()
|
||
}
|
||
|
||
pub fn pads(&self) -> Vec<PadInfo> {
|
||
self.pads.lock().unwrap().clone()
|
||
}
|
||
|
||
pub fn active(&self) -> Option<PadInfo> {
|
||
self.active.lock().unwrap().clone()
|
||
}
|
||
|
||
pub fn pinned(&self) -> Option<u32> {
|
||
*self.pinned.lock().unwrap()
|
||
}
|
||
|
||
pub fn set_pinned(&self, id: Option<u32>) {
|
||
let _ = self.ctl.send(Ctl::Pin(id));
|
||
}
|
||
|
||
pub fn attach(&self, connector: Arc<NativeClient>) {
|
||
let _ = self.ctl.send(Ctl::Attach(connector));
|
||
}
|
||
|
||
pub fn detach(&self) {
|
||
let _ = self.ctl.send(Ctl::Detach);
|
||
}
|
||
|
||
/// What "Automatic" resolves to right now — the virtual pad matching the physical one
|
||
/// (Swift parity); no pad connected leaves the host's own default.
|
||
pub fn auto_pref(&self) -> GamepadPref {
|
||
match self.active() {
|
||
Some(p) => p.pref,
|
||
None => GamepadPref::Auto,
|
||
}
|
||
}
|
||
}
|
||
|
||
fn send(connector: &NativeClient, kind: InputKind, code: u32, x: i32) {
|
||
let _ = connector.send_input(&InputEvent {
|
||
kind,
|
||
_pad: [0; 3],
|
||
code,
|
||
x,
|
||
y: 0,
|
||
flags: 0, // pad index 0 — single-pad model
|
||
});
|
||
}
|
||
|
||
fn button_bit(b: sdl3::gamepad::Button) -> Option<u32> {
|
||
use sdl3::gamepad::Button;
|
||
Some(match b {
|
||
Button::South => wire::BTN_A,
|
||
Button::East => wire::BTN_B,
|
||
Button::West => wire::BTN_X,
|
||
Button::North => wire::BTN_Y,
|
||
Button::Back => wire::BTN_BACK,
|
||
Button::Start => wire::BTN_START,
|
||
Button::Guide => wire::BTN_GUIDE,
|
||
Button::LeftStick => wire::BTN_LS_CLICK,
|
||
Button::RightStick => wire::BTN_RS_CLICK,
|
||
Button::LeftShoulder => wire::BTN_LB,
|
||
Button::RightShoulder => wire::BTN_RB,
|
||
Button::DPadUp => wire::BTN_DPAD_UP,
|
||
Button::DPadDown => wire::BTN_DPAD_DOWN,
|
||
Button::DPadLeft => wire::BTN_DPAD_LEFT,
|
||
Button::DPadRight => wire::BTN_DPAD_RIGHT,
|
||
Button::Touchpad => wire::BTN_TOUCHPAD,
|
||
// Back grips / paddles (Steam Deck L4/L5/R4/R5, Xbox Elite P1–P4) + the misc/Share button.
|
||
// PADDLE1/2/3/4 = R4/L4/R5/L5 (see the host `input::gamepad`).
|
||
Button::RightPaddle1 => wire::BTN_PADDLE1,
|
||
Button::LeftPaddle1 => wire::BTN_PADDLE2,
|
||
Button::RightPaddle2 => wire::BTN_PADDLE3,
|
||
Button::LeftPaddle2 => wire::BTN_PADDLE4,
|
||
Button::Misc1 => wire::BTN_MISC1,
|
||
_ => return None,
|
||
})
|
||
}
|
||
|
||
/// SDL axis → (wire axis id, wire value). SDL sticks are +y = down; the wire (XInput
|
||
/// convention) is +y = up. SDL triggers span 0..32767; the wire wants 0..255.
|
||
fn axis_value(axis: sdl3::gamepad::Axis, v: i16) -> (u32, i32) {
|
||
use sdl3::gamepad::Axis;
|
||
match axis {
|
||
Axis::LeftX => (wire::AXIS_LS_X, v as i32),
|
||
Axis::LeftY => (wire::AXIS_LS_Y, -(v as i32).max(-32767)),
|
||
Axis::RightX => (wire::AXIS_RS_X, v as i32),
|
||
Axis::RightY => (wire::AXIS_RS_Y, -(v as i32).max(-32767)),
|
||
Axis::TriggerLeft => (wire::AXIS_LT, (v as i32).clamp(0, 32767) >> 7),
|
||
Axis::TriggerRight => (wire::AXIS_RT, (v as i32).clamp(0, 32767) >> 7),
|
||
}
|
||
}
|
||
|
||
/// The DualSense effects packet (SDL `DS5EffectsState_t`, 47 bytes) — the same layout the
|
||
/// host parses off its virtual pad; the wire's 11-byte trigger blocks drop in verbatim.
|
||
/// Enable bits select only the fields each update touches, so rumble (driven separately
|
||
/// through SDL) and untouched fields keep their state.
|
||
#[derive(Default)]
|
||
struct Ds5Feedback;
|
||
|
||
impl Ds5Feedback {
|
||
const RIGHT_TRIGGER: usize = 10;
|
||
const LEFT_TRIGGER: usize = 21;
|
||
const PAD_LIGHTS: usize = 43;
|
||
const LED_RGB: usize = 44;
|
||
|
||
fn trigger_packet(which: u8, effect: &[u8]) -> [u8; 47] {
|
||
let mut p = [0u8; 47];
|
||
let (flag, off) = if which == 1 {
|
||
(0x04, Self::RIGHT_TRIGGER)
|
||
} else {
|
||
(0x08, Self::LEFT_TRIGGER)
|
||
};
|
||
p[0] = flag;
|
||
let n = effect.len().min(11);
|
||
p[off..off + n].copy_from_slice(&effect[..n]);
|
||
p
|
||
}
|
||
|
||
fn lightbar_packet(r: u8, g: u8, b: u8) -> [u8; 47] {
|
||
let mut p = [0u8; 47];
|
||
p[1] = 0x04; // lightbar enable
|
||
p[Self::LED_RGB] = r;
|
||
p[Self::LED_RGB + 1] = g;
|
||
p[Self::LED_RGB + 2] = b;
|
||
p
|
||
}
|
||
|
||
fn player_packet(bits: u8) -> [u8; 47] {
|
||
let mut p = [0u8; 47];
|
||
p[1] = 0x10; // player-LED enable
|
||
p[Self::PAD_LIGHTS] = bits & 0x1F;
|
||
p
|
||
}
|
||
}
|
||
|
||
struct Worker {
|
||
subsystem: sdl3::GamepadSubsystem,
|
||
opened: HashMap<u32, sdl3::gamepad::Gamepad>,
|
||
/// Connection order; the most recently connected is the auto selection.
|
||
order: Vec<u32>,
|
||
pinned: Option<u32>,
|
||
attached: Option<Arc<NativeClient>>,
|
||
/// Wire state of the active pad — zeroed on the wire at switch/detach.
|
||
last_axis: [i32; 6],
|
||
held_buttons: Vec<u32>,
|
||
/// Touchpad contacts the host believes are down, keyed by `(surface, finger)` — lifted on pad
|
||
/// switch / detach so a contact held at that moment doesn't stick. surface 0 = the legacy single
|
||
/// touchpad, 1/2 = a Steam left/right pad.
|
||
held_touches: std::collections::HashSet<(u8, u8)>,
|
||
last_accel: [i16; 3],
|
||
/// Raises the UI escape signal; the escape chord fires it once per press.
|
||
escape_tx: async_channel::Sender<()>,
|
||
/// The escape chord is fully held — latched so it fires once, not every poll.
|
||
chord_armed: bool,
|
||
}
|
||
|
||
impl Worker {
|
||
fn active_id(&self) -> Option<u32> {
|
||
self.pinned
|
||
.filter(|id| self.opened.contains_key(id))
|
||
.or_else(|| self.order.last().copied())
|
||
}
|
||
|
||
fn pad_info(&self, id: u32) -> Option<PadInfo> {
|
||
let pad = self.opened.get(&id)?;
|
||
let mut pref = pref_for_type(
|
||
self.subsystem
|
||
.type_for_id(sdl3::sys::joystick::SDL_JoystickID(id)),
|
||
);
|
||
// There is no SDL gamepad type for the Steam Deck / Steam Controller, so detect Valve by
|
||
// VID/PID (Deck 0x1205, SC wired 0x1102, SC dongle 0x1142) — the host then builds the virtual
|
||
// hid-steam pad with the back grips + dual trackpads and the right glyph identity.
|
||
if pad.vendor_id() == Some(0x28DE)
|
||
&& matches!(pad.product_id(), Some(0x1205 | 0x1102 | 0x1142))
|
||
{
|
||
pref = GamepadPref::SteamDeck;
|
||
}
|
||
Some(PadInfo {
|
||
id,
|
||
name: pad.name().unwrap_or_else(|| "Controller".into()),
|
||
pref,
|
||
})
|
||
}
|
||
|
||
/// Zero everything the host believes is held — on pad switch and detach.
|
||
fn flush_held(&mut self) {
|
||
if let Some(c) = &self.attached {
|
||
for b in self.held_buttons.drain(..) {
|
||
send(c, InputKind::GamepadButton, b, 0);
|
||
}
|
||
for (id, v) in self.last_axis.iter_mut().enumerate() {
|
||
if *v != 0 && *v != i32::MIN {
|
||
send(c, InputKind::GamepadAxis, id as u32, 0);
|
||
}
|
||
*v = i32::MIN;
|
||
}
|
||
// Lift any touchpad contact the host still believes is down (surface 0 = legacy pad).
|
||
for (surface, finger) in self.held_touches.drain() {
|
||
let rich = if surface == 0 {
|
||
RichInput::Touchpad {
|
||
pad: 0,
|
||
finger,
|
||
active: false,
|
||
x: 0,
|
||
y: 0,
|
||
}
|
||
} else {
|
||
RichInput::TouchpadEx {
|
||
pad: 0,
|
||
surface,
|
||
finger,
|
||
touch: false,
|
||
click: false,
|
||
x: 0,
|
||
y: 0,
|
||
pressure: 0,
|
||
}
|
||
};
|
||
let _ = c.send_rich_input(rich);
|
||
}
|
||
} else {
|
||
self.held_buttons.clear();
|
||
self.last_axis = [i32::MIN; 6];
|
||
self.held_touches.clear();
|
||
}
|
||
}
|
||
|
||
/// Raise the UI escape signal when the [`ESCAPE_CHORD`] just completed (latched so it
|
||
/// fires once per press). Called after each button-down updates `held_buttons`.
|
||
fn maybe_fire_escape(&mut self) {
|
||
if self.chord_armed {
|
||
return;
|
||
}
|
||
if ESCAPE_CHORD.iter().all(|b| self.held_buttons.contains(b)) {
|
||
self.chord_armed = true;
|
||
let _ = self.escape_tx.try_send(());
|
||
tracing::info!("gamepad escape chord (L1+R1+Start+Select) — leaving fullscreen");
|
||
}
|
||
}
|
||
|
||
/// Re-arm once the chord is broken (any of its buttons released).
|
||
fn rearm_escape(&mut self) {
|
||
if self.chord_armed && !ESCAPE_CHORD.iter().all(|b| self.held_buttons.contains(b)) {
|
||
self.chord_armed = false;
|
||
}
|
||
}
|
||
|
||
/// Sensors stream only while a session wants them (they cost USB/BT bandwidth).
|
||
fn set_sensors(&mut self, enabled: bool) {
|
||
let Some(id) = self.active_id() else { return };
|
||
if let Some(pad) = self.opened.get_mut(&id) {
|
||
use sdl3::sensor::SensorType;
|
||
for s in [SensorType::Gyroscope, SensorType::Accelerometer] {
|
||
if unsafe { pad.has_sensor(s) } {
|
||
let _ = pad.sensor_set_enabled(s, enabled);
|
||
}
|
||
}
|
||
}
|
||
}
|
||
|
||
/// Forward one touchpad contact on the rich-input plane. A multi-touchpad pad (Steam Deck / Steam
|
||
/// Controller) sends `TouchpadEx` with the surface (SDL touchpad 0 = left → 1, 1 = right → 2) and
|
||
/// signed coordinates; a single-touchpad pad (DualSense) keeps the legacy `Touchpad` (unsigned).
|
||
fn forward_touch(
|
||
&mut self,
|
||
which: u32,
|
||
touchpad: u32,
|
||
finger: u8,
|
||
x: f32,
|
||
y: f32,
|
||
active: bool,
|
||
) {
|
||
let Some(c) = self.attached.as_ref() else {
|
||
return;
|
||
};
|
||
let multi = self
|
||
.opened
|
||
.get(&which)
|
||
.map(|p| p.touchpads_count() >= 2)
|
||
.unwrap_or(false);
|
||
let (cx, cy) = (x.clamp(0.0, 1.0), y.clamp(0.0, 1.0));
|
||
let surface = if multi { (touchpad as u8) + 1 } else { 0 };
|
||
let rich = if multi {
|
||
RichInput::TouchpadEx {
|
||
pad: 0,
|
||
surface,
|
||
finger,
|
||
touch: active,
|
||
click: false,
|
||
x: (cx * 65535.0 - 32768.0) as i16,
|
||
y: (cy * 65535.0 - 32768.0) as i16,
|
||
pressure: 0,
|
||
}
|
||
} else {
|
||
RichInput::Touchpad {
|
||
pad: 0,
|
||
finger,
|
||
active,
|
||
x: (cx * 65535.0) as u16,
|
||
y: (cy * 65535.0) as u16,
|
||
}
|
||
};
|
||
let _ = c.send_rich_input(rich);
|
||
if active {
|
||
self.held_touches.insert((surface, finger));
|
||
} else {
|
||
self.held_touches.remove(&(surface, finger));
|
||
}
|
||
}
|
||
}
|
||
|
||
#[allow(clippy::too_many_lines)]
|
||
fn run(
|
||
pads_out: &Mutex<Vec<PadInfo>>,
|
||
active_out: &Mutex<Option<PadInfo>>,
|
||
pinned_out: &Mutex<Option<u32>>,
|
||
ctl: &Receiver<Ctl>,
|
||
escape_tx: &async_channel::Sender<()>,
|
||
) -> Result<(), String> {
|
||
// Off-main-thread + no video subsystem: keep SDL away from signals, poll pads on its
|
||
// own thread.
|
||
sdl3::hint::set("SDL_NO_SIGNAL_HANDLERS", "1");
|
||
sdl3::hint::set("SDL_JOYSTICK_THREAD", "1");
|
||
// Let SDL's HIDAPI drivers open Valve Steam Controller / Steam Deck devices directly, so the
|
||
// paddles, both trackpads, and gyro arrive as first-class SDL gamepad inputs. On a Deck in Game
|
||
// Mode, Steam Input still holds the device — the user must disable Steam Input for this app (see
|
||
// the Decky UX); on a desktop client (or a Deck with Steam Input off) the hints just work.
|
||
sdl3::hint::set("SDL_JOYSTICK_HIDAPI_STEAMDECK", "1");
|
||
sdl3::hint::set("SDL_JOYSTICK_HIDAPI_STEAM", "1");
|
||
let sdl = sdl3::init().map_err(|e| e.to_string())?;
|
||
let subsystem = sdl.gamepad().map_err(|e| e.to_string())?;
|
||
let mut pump = sdl.event_pump().map_err(|e| e.to_string())?;
|
||
|
||
let mut w = Worker {
|
||
subsystem,
|
||
opened: HashMap::new(),
|
||
order: Vec::new(),
|
||
pinned: None,
|
||
attached: None,
|
||
last_axis: [i32::MIN; 6],
|
||
held_buttons: Vec::new(),
|
||
held_touches: std::collections::HashSet::new(),
|
||
last_accel: [0; 3],
|
||
escape_tx: escape_tx.clone(),
|
||
chord_armed: false,
|
||
};
|
||
|
||
let publish = |w: &Worker| {
|
||
let mut list: Vec<PadInfo> = w.order.iter().filter_map(|&id| w.pad_info(id)).collect();
|
||
list.reverse(); // most recent first — the Settings list order
|
||
*pads_out.lock().unwrap() = list;
|
||
*active_out.lock().unwrap() = w.active_id().and_then(|id| w.pad_info(id));
|
||
*pinned_out.lock().unwrap() = w.pinned;
|
||
};
|
||
|
||
loop {
|
||
// Control plane from the UI thread.
|
||
loop {
|
||
match ctl.try_recv() {
|
||
Ok(Ctl::Attach(c)) => {
|
||
w.attached = Some(c);
|
||
w.last_axis = [i32::MIN; 6];
|
||
w.set_sensors(true);
|
||
}
|
||
Ok(Ctl::Detach) => {
|
||
w.flush_held();
|
||
w.set_sensors(false);
|
||
w.attached = None;
|
||
}
|
||
Ok(Ctl::Pin(id)) => {
|
||
let before = w.active_id();
|
||
w.pinned = id;
|
||
if w.active_id() != before {
|
||
w.flush_held();
|
||
if w.attached.is_some() {
|
||
w.set_sensors(true);
|
||
}
|
||
}
|
||
publish(&w);
|
||
}
|
||
Err(std::sync::mpsc::TryRecvError::Empty) => break,
|
||
Err(std::sync::mpsc::TryRecvError::Disconnected) => return Ok(()), // app gone
|
||
}
|
||
}
|
||
|
||
while let Some(event) = pump.poll_event() {
|
||
use sdl3::event::Event;
|
||
let active = w.active_id();
|
||
match event {
|
||
Event::ControllerDeviceAdded { which, .. } => {
|
||
if !w.opened.contains_key(&which) {
|
||
match w.subsystem.open(sdl3::sys::joystick::SDL_JoystickID(which)) {
|
||
Ok(pad) => {
|
||
tracing::info!(
|
||
name = pad.name().unwrap_or_default(),
|
||
"gamepad attached"
|
||
);
|
||
w.opened.insert(which, pad);
|
||
w.order.push(which);
|
||
if w.attached.is_some() && w.active_id() == Some(which) {
|
||
w.set_sensors(true);
|
||
}
|
||
publish(&w);
|
||
}
|
||
Err(e) => tracing::warn!(error = %e, "gamepad open failed"),
|
||
}
|
||
}
|
||
}
|
||
Event::ControllerDeviceRemoved { which, .. } => {
|
||
if w.opened.remove(&which).is_some() {
|
||
w.order.retain(|&id| id != which);
|
||
if active == Some(which) {
|
||
w.flush_held();
|
||
}
|
||
tracing::info!("gamepad detached");
|
||
publish(&w);
|
||
}
|
||
}
|
||
Event::ControllerButtonDown { which, button, .. }
|
||
if active == Some(which) && w.attached.is_some() =>
|
||
{
|
||
if let Some(bit) = button_bit(button) {
|
||
w.held_buttons.push(bit);
|
||
send(
|
||
w.attached.as_ref().unwrap(),
|
||
InputKind::GamepadButton,
|
||
bit,
|
||
1,
|
||
);
|
||
w.maybe_fire_escape();
|
||
}
|
||
}
|
||
Event::ControllerButtonUp { which, button, .. }
|
||
if active == Some(which) && w.attached.is_some() =>
|
||
{
|
||
if let Some(bit) = button_bit(button) {
|
||
w.held_buttons.retain(|&b| b != bit);
|
||
send(
|
||
w.attached.as_ref().unwrap(),
|
||
InputKind::GamepadButton,
|
||
bit,
|
||
0,
|
||
);
|
||
w.rearm_escape();
|
||
}
|
||
}
|
||
Event::ControllerAxisMotion {
|
||
which, axis, value, ..
|
||
} if active == Some(which) && w.attached.is_some() => {
|
||
let (id, v) = axis_value(axis, value);
|
||
if w.last_axis[id as usize] != v {
|
||
w.last_axis[id as usize] = v;
|
||
send(w.attached.as_ref().unwrap(), InputKind::GamepadAxis, id, v);
|
||
}
|
||
}
|
||
// Touchpad contacts → the rich-input plane. One pad (DualSense) keeps the legacy
|
||
// `Touchpad`; two pads (Steam Deck / Steam Controller) send `TouchpadEx` per surface.
|
||
Event::ControllerTouchpadDown {
|
||
which,
|
||
touchpad,
|
||
finger,
|
||
x,
|
||
y,
|
||
..
|
||
}
|
||
| Event::ControllerTouchpadMotion {
|
||
which,
|
||
touchpad,
|
||
finger,
|
||
x,
|
||
y,
|
||
..
|
||
} if active == Some(which) && w.attached.is_some() => {
|
||
w.forward_touch(which, touchpad as u32, finger as u8, x, y, true);
|
||
}
|
||
Event::ControllerTouchpadUp {
|
||
which,
|
||
touchpad,
|
||
finger,
|
||
x,
|
||
y,
|
||
..
|
||
} if active == Some(which) && w.attached.is_some() => {
|
||
w.forward_touch(which, touchpad as u32, finger as u8, x, y, false);
|
||
}
|
||
// Motion: accel events update the cache; each gyro event ships a sample
|
||
// (the DualSense reports both at ~250 Hz). Scale convention shared with
|
||
// the Swift client — sign/scale derived, not yet live-verified.
|
||
Event::ControllerSensorUpdated {
|
||
which,
|
||
sensor,
|
||
data,
|
||
..
|
||
} if active == Some(which) && w.attached.is_some() => {
|
||
use sdl3::sensor::SensorType;
|
||
match sensor {
|
||
SensorType::Accelerometer => {
|
||
for (i, v) in data.iter().enumerate() {
|
||
w.last_accel[i] =
|
||
(v / G * ACCEL_LSB_PER_G).clamp(-32768.0, 32767.0) as i16;
|
||
}
|
||
}
|
||
SensorType::Gyroscope => {
|
||
let mut gyro = [0i16; 3];
|
||
for (i, v) in data.iter().enumerate() {
|
||
gyro[i] = (v * GYRO_LSB_PER_RAD_S).clamp(-32768.0, 32767.0) as i16;
|
||
}
|
||
let _ =
|
||
w.attached
|
||
.as_ref()
|
||
.unwrap()
|
||
.send_rich_input(RichInput::Motion {
|
||
pad: 0,
|
||
gyro,
|
||
accel: w.last_accel,
|
||
});
|
||
}
|
||
_ => {}
|
||
}
|
||
}
|
||
_ => {}
|
||
}
|
||
}
|
||
|
||
// Feedback planes (this thread is their single consumer). The host re-sends
|
||
// rumble state periodically, so a generous duration with refresh-on-update is
|
||
// safe — a dropped stop heals within ~500 ms.
|
||
if let Some(connector) = w.attached.clone() {
|
||
while let Ok((pad, low, high)) = connector.next_rumble(Duration::ZERO) {
|
||
if pad == 0 {
|
||
if let Some(p) = w.active_id().and_then(|id| w.opened.get_mut(&id)) {
|
||
// Surface a failed SDL rumble write: a swallowed error here (DualSense not in
|
||
// the right HIDAPI mode, etc.) reads exactly like "rumble doesn't work". The
|
||
// host logs the send side on 0xCA, so the two together pinpoint host-game vs
|
||
// client-render.
|
||
if let Err(e) = p.set_rumble(low, high, 5_000) {
|
||
tracing::warn!(low, high, error = %e, "rumble: SDL set_rumble failed");
|
||
} else {
|
||
tracing::debug!(low, high, "rumble: rendered");
|
||
}
|
||
} else {
|
||
tracing::debug!(low, high, "rumble: received but no active pad to render");
|
||
}
|
||
}
|
||
}
|
||
while let Ok(hid) = connector.next_hidout(Duration::ZERO) {
|
||
let Some(id) = w.active_id() else { continue };
|
||
let is_ds = w.pad_info(id).is_some_and(|p| p.is_dualsense());
|
||
let Some(pad) = w.opened.get_mut(&id) else {
|
||
continue;
|
||
};
|
||
match hid {
|
||
HidOutput::Led { pad: 0, r, g, b } if is_ds => {
|
||
let _ = pad.send_effect(&Ds5Feedback::lightbar_packet(r, g, b));
|
||
}
|
||
HidOutput::Led { pad: 0, r, g, b } => {
|
||
let _ = pad.set_led(r, g, b);
|
||
}
|
||
HidOutput::PlayerLeds { pad: 0, bits } if is_ds => {
|
||
let _ = pad.send_effect(&Ds5Feedback::player_packet(bits));
|
||
}
|
||
HidOutput::Trigger {
|
||
pad: 0,
|
||
which,
|
||
ref effect,
|
||
} if is_ds => {
|
||
let _ = pad.send_effect(&Ds5Feedback::trigger_packet(which, effect));
|
||
}
|
||
_ => {}
|
||
}
|
||
}
|
||
}
|
||
|
||
std::thread::sleep(Duration::from_millis(if w.attached.is_some() {
|
||
2
|
||
} else {
|
||
30
|
||
}));
|
||
}
|
||
}
|