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Two bodies of work in one commit (the rename moved files the fixes also touched). Naming/structure cleanup (pre-launch): - Host modules m3.rs->punktfunk1.rs, m0.rs->spike.rs; CLI m3-host->punktfunk1-host, m0->spike; bare `punktfunk-host` now prints help. Types M3Options/M3Source-> Punktfunk1Options/Punktfunk1Source. - Clients consolidated out of crates/ into clients/: punktfunk-client-rs-> clients/probe (crate punktfunk-probe), client-linux->clients/linux, client-windows->clients/windows, punktfunk-android->clients/android/native (crate punktfunk-client-android; kept [lib] name=punktfunk_android so the JNI contract is unchanged). crates/ now holds only core + host. - Milestone codes M0-M4 purged from code/CLI/CLAUDE.md/README/docs/docs-site, kept only in docs/implementation-plan.md. docs/m2-plan.md-> docs/gamestream-host-plan.md. CI/gradle/flatpak paths updated. Client loss-recovery (video froze and never recovered after a brief drop): - Export punktfunk_connection_frames_dropped through the C ABI (the core already tracked it for the client keyframe-recovery loop; it was never reachable from the ABI clients). Regenerated punktfunk_core.h. - Apple (StreamPump + Stage2Pipeline) and Android (decode.rs) now poll frames_dropped and request a keyframe when it climbs -- the same loss-driven recovery Linux/Windows already had. Under infinite GOP the decoder silently conceals reference-missing frames, so the decode-error trigger rarely fires. Apple rumble robustness (worked then went spotty -- DualSense + Xbox): - Add CHHapticEngine stopped/reset handlers (rebuild on app background / audio interruption / server reset) and drop the permanent `broken` latch on a transient drive failure; latch only when the controller truly has no haptics. - Surface swallowed SDL set_rumble errors on Linux/Windows + diagnostic logging. Verified: cargo build/clippy/fmt --workspace, C-ABI harness, header drift. Not runnable on this box (verify in CI): Gitea workflows, gradle/Android, flatpak, Swift/decky. Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
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title, description
| title | description |
|---|---|
| Configuration | The host.env settings — compositor, resolution, bitrate, input — and how to tune them. |
The host reads its settings from ~/.config/punktfunk/host.env (a simple KEY=value file). Your
setup guide gives you a starting host.env for your desktop; this page is the
reference.
Session settings
These tell the host which desktop session to attach to. Your setup guide sets them for you.
| Setting | What it does |
|---|---|
WAYLAND_DISPLAY |
The Wayland socket of your session (wayland-0 for a normal desktop). |
XDG_CURRENT_DESKTOP |
Your desktop (GNOME, KDE). |
XDG_RUNTIME_DIR, DBUS_SESSION_BUS_ADDRESS |
Needed when the host runs outside your interactive session (e.g. as a service). |
Core settings
| Setting | Values | Meaning |
|---|---|---|
PUNKTFUNK_COMPOSITOR |
mutter · kwin · gamescope · wlroots |
Which backend creates the virtual display. Match your desktop. |
PUNKTFUNK_VIDEO_SOURCE |
virtual · portal |
virtual creates a per-client display at its exact mode (the normal choice). portal captures an existing monitor instead. |
PUNKTFUNK_ZEROCOPY |
1 · 0 |
GPU zero-copy capture→encode. Leave on; it falls back to a CPU path automatically. |
PUNKTFUNK_INPUT_BACKEND |
libei · gamescope · wlr · uinput |
How input is injected. libei for GNOME/KDE, gamescope for Bazzite. |
Resolution and refresh rate
You don't set these on the host — the client chooses them. When a device connects, the host creates a virtual display at that device's resolution and refresh rate. A 1080p60 laptop and a 1440p120 desktop each get their own. (With Moonlight, set the mode in Moonlight's settings; with the Apple app, it uses the device's display.)
Bitrate
The client requests a bitrate; the host encodes to it. To find a good value for your link:
- Apple app: use the built-in speed test (a host card's menu → Test Network Speed). It measures your link and suggests a bitrate, then applies it.
- Moonlight: set the bitrate in Moonlight's settings. Start moderate and raise it.
Multiple devices at once
Today the native punktfunk/1 host (serve --native) streams one session at a time — additional
clients wait in the accept queue until the active session ends. Each session gets its own virtual
display at the client's exact resolution; concurrent native sessions are on the roadmap.
(punktfunk1-host, the standalone test host, has a --max-concurrent N knob, default 4, bounded by your
GPU's encoder — see the Host CLI reference — but serve --native does not take
that flag.)
Codec and FEC
- The host encodes HEVC (H.265) by default; AV1 is available for clients that support it.
- The native protocol adds forward error correction for lossy links.
PUNKTFUNK_FEC_PCT=Nsets the redundancy percentage (the default is sensible for a normal LAN).
Diagnostics
PUNKTFUNK_PERF=1logs per-stage timing (capture, encode, send) — handy when tuning latency.RUST_LOG=info(ordebug) controls log verbosity.