enricobuehler
94ca4041ca
capture/linux (PipeWire portal) + capture/windows (IDD direct-push: dxgi mechanics, idd_push + submodules, synthetic_nv12) + pwinit move into crates/pf-capture behind the Capturer trait + synthetic sources (plan §W6). The crate speaks pf-frame (CapturedFrame/PixelFormat + the DXGI identity), pf-zerocopy (CUDA import), and the pf-win-display leaves, and NEVER pf-encode — the capture->encode edge is one-way. This completes the deliberate capture/encode crate split (the invasive path the plan had merged into one pf-media): capture and encode are now separate subsystem crates sharing only pf-frame. Four seams keep the capturer off the orchestrator: - VirtualOutput is EXPLODED into primitives (remote_fd/node_id/preferred_mode/ keepalive) by the host facade, so pf-capture never depends on the vdisplay type; - FrameChannelSender: the sealed-channel delivery is a Send+Sync closure the host facade builds from the pf-vdisplay control device + send_frame_channel IOCTL and hands in; ChannelBroker holds the closure instead of the control HANDLE (the whole-desktop handle-duplication security boundary is byte-for-byte unchanged); - console_session_mismatch + desktop_bounds live in pf-win-display (leaf peers); - pwinit moves here (audio caller -> pf_capture::pwinit). The host keeps capture.rs as a thin BRIDGE: it re-exports the vocabulary + capturer types (every crate::capture::* path is unchanged) and keeps open_portal_monitor / capture_virtual_output, which resolve the ZeroCopyPolicy + FrameChannelSender and call into pf-capture. verify_is_wudfhost + install_gpu_pref_hook are re-exported (the gamepad-channel bootstrap + the main.rs subcommand consume them). Co-developed: the resident-HID-mouse compose-kick hook (HID_COMPOSE_KICK + the HID-first cursor kick + _display_wake) rides this commit into pf-capture; the host mouse_windows registration side lands separately on top. Verified: Linux clippy -D warnings (pf-capture + host nvenc,vulkan-encode,pyrowave --all-targets) + host tests 299/299; Windows clippy -D warnings (pf-capture --all-targets + host nvenc,amf-qsv --all-targets) Finished exit 0. Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
punktfunk-host
The streaming host — the program you run on the machine whose desktop or games you want to stream. For each client that connects, it spins up a virtual display sized to that device, captures it on the GPU, encodes with hardware NVENC/VAAPI/AMF/QSV, and sends it out over a low-latency transport — no physical monitor, no letterboxing, no rearranging your real screens.
It speaks two protocols from one process:
- GameStream — so any Moonlight / Artemis client works day one.
punktfunk/1— punktfunk's own faster protocol (QUIC control plane, GF(2¹⁶) FEC + AES-GCM data plane) that the native clients use.
Runs on Linux (the primary, most battle-tested path) and Windows (x64). The shared protocol,
FEC, and crypto live in punktfunk-core; this crate is everything
platform-facing around it.
What it does
- Per-client virtual displays at the exact WxH@Hz. Linux uses per-compositor backends — KWin, gamescope, Mutter, and Sway/wlroots; Windows uses its own all-Rust IddCx virtual display, even on the secure desktop (UAC / lock screen).
- GPU zero-copy capture → encode. dmabuf → CUDA/Vulkan → NVENC on Linux; on Windows the host pushes frames straight into its own IDD (sealed IDD-push, no screen-scraping) → GPU encode. Encoders auto-select by GPU vendor: NVENC (NVIDIA), VAAPI (Linux AMD/Intel), AMF/QSV (Windows AMD/Intel), or software H.264 as a floor. HDR/10-bit and HEVC 4:4:4 supported.
- Input injection. Mouse/keyboard (libei / gamescope EIS / wlr / Windows SendInput) and virtual gamepads — Xbox 360/One, DualSense, DualShock 4 — with rumble and HID feedback back-channels.
- Audio both ways. Opus audio host→client, plus a virtual microphone the client can talk into.
- Trust & discovery. A persistent host identity, SPAKE2 PIN pairing (default) or TOFU, and mDNS auto-advertisement so clients find the host without typing an IP.
- Management API + web console. A REST API (
mgmt.rs, OpenAPI atapi/openapi.json) drives status, paired devices, and on-demand pairing; the browser UI is inweb/.
Run it
punktfunk-host serve runs inside your desktop session. Bare serve is the secure native-only
default (punktfunk/1 + the management API); add --gamestream on a trusted LAN to also accept
stock Moonlight clients.
# Linux, from the repo root (see the repo README "Running on this box" for the headless recipe):
cargo run -rp punktfunk-host -- serve # native-only (secure default)
cargo run -rp punktfunk-host -- serve --gamestream # + Moonlight compatibility
Then pair from the web console (https://<host-ip>:47992) or the client app.
Most people should install a package rather than run from source — see
packaging/ (apt · rpm/COPR/bootc · Arch/sysext · Windows installer) and
the per-platform guides at docs.punktfunk.unom.io/docs/install.
Subcommands
| Command | Purpose |
|---|---|
serve |
The host (native punktfunk/1 + mgmt API; --gamestream adds Moonlight). |
punktfunk1-host |
Standalone native-protocol listener for testing/measurement (--source virtual, --max-sessions). |
openapi |
Print the management-API OpenAPI spec (regenerates api/openapi.json). |
library |
Inspect the multi-store game library. |
service · driver · web |
Windows: SCM service, driver install, bundled web console. |
*-test / *-selftest / *-probe |
Diagnostics (input, zero-copy, HDR, compositor, gamepads). |
--help lists them all.
Layout
src/
main.rs CLI + subcommand dispatch
config.rs · session_plan.rs · session_tuning.rs · pipeline.rs session setup + the frame pipeline
vdisplay/ per-compositor virtual outputs (kwin · gamescope · mutter · wlroots)
capture/ · capture.rs screen/dmabuf capture (+ Windows IDD-push)
encode/ · encode.rs per-GPU encoders (nvenc · vaapi · ffmpeg_win (AMF/QSV) · sw)
linux/zerocopy/ dmabuf → CUDA → NVENC bridges (EGL/GL tiled, Vulkan LINEAR)
inject/ · inject.rs input backends (libei · wlr · uinput gamepads · UHID DualSense/DS4)
audio/ · audio.rs Opus out + virtual mic (PipeWire / WASAPI)
gamestream/ Moonlight compat: nvhttp · pairing · rtsp · control · stream · gamepad · apps
native.rs the native punktfunk/1 host (QUIC control + native-thread UDP data plane)
mgmt.rs · native_pairing.rs · stats_recorder.rs management API, pairing, perf capture
hdr.rs · library.rs HDR metadata; multi-store game library
linux/ · windows/ platform-confined backends
Related
punktfunk-core— the shared protocol · FEC · crypto core- Clients — the apps that connect (Apple · Linux · Windows · Android · probe)
- Packaging & docs — install & operate
- punktfunk-planning (internal planning repo) — architecture rationale and deep-dive plans