PUNKTFUNK_GAMEPAD=dualsense now routes a session's gamepad through a real virtual
DualSense (UHID + hid-playstation) end to end:
- host: a `PadBackend` enum (m3.rs) selects `GamepadManager` (uinput xpad, default)
or the new `DualSenseManager` (dualsense.rs) per session. The manager keeps each
pad's full DsState so touchpad + motion (rich-input plane) persist across
button/stick frames, and services the !Send /dev/uhid fd only on the input thread
(which cycles <=4ms, so the GET_REPORT init handshake completes).
- feedback: `service()` now returns `DsFeedback { hidout, rumble }`. Motor rumble
stays on the universal 0xCA plane (so non-DualSense clients still feel it; manager
dedups change); lightbar / player LEDs / adaptive-trigger effects ride the new
0xCD HID-output plane (host->client) as `HidOutput`.
- rich input: touchpad contacts + motion ride the 0xCC plane (client->host) as
`RichInput`, applied via `DualSenseManager::apply_rich` (merged with button state;
touch normalized 0..65535 -> the touchpad resolution).
- connector + C ABI: `NativeClient::next_hidout` / `send_rich_input`, exported as
`punktfunk_connection_next_hidout` (-> PunktfunkHidOutput) and
`punktfunk_connection_send_rich_input` (<- PunktfunkRichInput); header regenerated.
- reference client: `--rich-input-test` drives the DualSense touchpad + motion and
logs the 0xCD feedback that comes back.
Validated live on-box: a synthetic-source m3-host + client-rs created the real
kernel DualSense, drove 0xCC, and decoded 12 live 0xCD events (the kernel's actual
lightbar/trigger init reports) with the data plane unaffected (600/600 frames).
Adversarial review fixes folded in: the input loop no longer skips the rich drain +
feedback pump on a dropped gamepad event, and the touch contact id is clamped to its
slot. Remaining: the Apple client renders triggers/rumble on a real DualSense.
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
Roadmap #5 (rich DualSense). A UHID device presents a real Sony DualSense to the kernel's
hid-playstation driver (matched by VID 054C/PID 0CE6), which exposes the full controller —
gamepad, motion sensors, touchpad, lightbar/player LEDs, adaptive triggers — unlike the
uinput X-Box-360 pad.
- inject/dualsense.rs: hand-rolled /dev/uhid codec (no bindgen) mirroring the uinput style;
the canonical inputtino 232-byte USB HID report descriptor + the feature-report replies
(calibration 0x05 / pairing 0x09 / firmware 0x20) — answering hid-playstation's GET_REPORTs
during init is REQUIRED or it creates no input devices. DsState::from_gamepad maps a
GameStream/XInput frame → the DualSense input report (buttons/sticks/triggers/dpad, +
touchpad/motion fields); service() answers GET_REPORTs and parses HID OUTPUT (rumble /
lightbar RGB / player LEDs / adaptive triggers) into quic::HidOutput.
- scripts/60-punktfunk.rules: grant /dev/uhid to the 'input' group (like /dev/uinput).
- `punktfunk-host dualsense-test`: standalone validation (no streaming session).
Validated live: `dualsense-test` → hid-playstation binds + loads ff_memless + led_class_
multicolor; the kernel creates "Punktfunk DualSense 0" (event/js gamepad + Motion Sensors +
Touchpad + Headset Jack) at VID 054c/PID 0ce6, plus the lightbar at /sys/class/leds/
input*:rgb:indicator; js shows the Cross button firing + the left-stick sweep. Clippy/fmt
clean, workspace tests green. Wiring into the session (pad-type select, touchpad/motion
routing, HID-output back-channel) is the next commit.
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
Roadmap #5 (touch, ahead of the XL UHID DualSense work). Touch fits the existing 18-byte
InputEvent: code = touch id, x/y = client pixels, flags = (w<<16)|h — the same absolute
mapping as MouseMoveAbs.
- core: InputKind::{TouchDown=9, TouchMove=10, TouchUp=11} + from_u8 + roundtrip test.
- host inject/libei.rs: request the RemoteDesktop Touchscreen device type, bind the Touch
capability, and inject ei_touchscreen down/motion/up (one event = one frame, per the
protocol rule), mapping coordinates into the device region like the abs pointer. wlroots
has no virtual-touch protocol wired — no-ops there.
- client-rs --touch-test: drags a synthetic finger (touch id 0) in a circle.
Validated live on headless KWin: the portal GRANTS the Touchscreen device type
(Keyboard|Pointer|Touchscreen), proving the request path — but KWin's EIS server creates no
touchscreen *device*, so touch currently no-ops on this KWin (now logged once, not silent).
The injection code is correct and will land on a backend that exposes ei_touchscreen
(gamescope / a newer compositor / the real touch-client path). Workspace green, clippy/fmt
clean, +1 unit test.
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
Full project rename, decided 2026-06-10:
- Crates/binaries: punktfunk-core / punktfunk-host / punktfunk-client-rs.
- C ABI: punktfunk_* symbols, Punktfunk* types, include/punktfunk_core.h,
PUNKTFUNK_FEATURE_QUIC guard (header regenerated; cbindgen renames updated, incl.
PUNKTFUNK_BTN_*/PUNKTFUNK_AXIS_* wire constants).
- Protocol: punktfunk/1 — control-plane magic LMN1 → PKF1, nonce salt lmn1 → pkf1.
WIRE BREAK: clients must be rebuilt from this revision.
- Env knobs: PUNKTFUNK_VIDEO_SOURCE / PUNKTFUNK_COMPOSITOR / PUNKTFUNK_ZEROCOPY / ….
- Host config dir: ~/.config/punktfunk (the box's dir was migrated in place — the
persistent identity is unchanged, pinned fingerprints stay valid).
- Swift package: PunktfunkKit + PunktfunkCore.xcframework + PunktfunkConnection
(Sources/PunktfunkClient app + tests renamed with it); build-xcframework.sh updated.
- scripts/: 60-punktfunk.rules, punktfunk-host.service; OpenAPI doc regenerated.
Also: scripts/headless/run-headless-kde.sh — full headless Plasma bringup. Root cause of
"desktop but no apps/settings" over the stream: plasmashell launched without
XDG_MENU_PREFIX=plasma-, so the launcher resolved a nonexistent applications.menu and
rendered an empty menu. The script sets the complete KDE session env (menu prefix,
KDE_FULL_SESSION, session version) and rebuilds ksycoca before starting plasmashell.
Gate: 97/97 tests, clippy -D warnings (both feature sets), fmt, C-ABI harness PASS,
zero lumen references left outside .git.
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
enricobuehler