enricobuehlerandClaude Fable 5
1f59498c5c
ci / web (push) Successful in 3m26s
ci / docs-site (push) Successful in 3m32s
arch / build-publish (push) Failing after 4m29s
apple / swift (push) Successful in 4m38s
docker / builders (--build-arg FEDORA_VERSION=44, ci/fedora-rpm.Dockerfile, punktfunk-fedora44-rpm, -f44) (push) Successful in 5s
docker / builders (ci/android-ci.Dockerfile, punktfunk-android-ci) (push) Successful in 5s
docker / builders (ci/arch-ci.Dockerfile, punktfunk-arch-ci) (push) Successful in 4s
docker / builders (ci/fedora-rpm.Dockerfile, punktfunk-fedora-rpm) (push) Successful in 5s
docker / builders (ci/rust-ci-noble.Dockerfile, punktfunk-rust-ci-noble) (push) Successful in 5s
docker / builders (ci/rust-ci.Dockerfile, punktfunk-rust-ci) (push) Successful in 4s
ci / rust-arm64 (push) Failing after 4m50s
docker / apps (., web/Dockerfile, punktfunk-web) (push) Successful in 10s
docker / apps (docs-site, docs-site/Dockerfile, punktfunk-docs) (push) Successful in 12s
deb / build-publish (push) Failing after 5m6s
ci / rust (push) Failing after 5m47s
docker / builders-arm64cross (push) Successful in 6s
docker / deploy-docs (push) Successful in 34s
android / android (push) Canceled after 8m16s
apple / screenshots (push) Canceled after 3m46s
deb / build-publish-host (push) Canceled after 4m15s
deb / build-publish-client-arm64 (push) Canceled after 4m7s
rpm / build-publish (43, bazzite, punktfunk-fedora-rpm) (push) Canceled after 3m6s
rpm / build-publish (44, fedora-44, punktfunk-fedora44-rpm) (push) Canceled after 2m58s
windows-host / winget-source (push) Canceled after 0s
windows-host / package (push) Canceled after 8m21s
The capture-latched client (console.rs latched_mouse) never advertises CLIENT_CAP_CURSOR, so its session resolved cursor_blend=false and asked Mutter to EMBED the pointer. On a Mutter virtual stream that is a fiction: since Mutter 48 (7ff5334a, hw-cursor inhibition removed) the software cursor overlay is suppressed stage-globally whenever any physical head realizes a HW cursor — dmabuf-recorded frames blit the view without a pointer, and cursor-only motion schedules no re-record either (mutter#4939). Probed on-glass on Mutter 50.3: embedded + relative motion = frozen frame counter; SPA_META_Cursor positions kept flowing in the same setup. So the no-channel session now takes the path that was verified end to end: cursor-as-metadata + the host composites, permanently — the same arm a channel session lands in after its capture-model flip. Embedded remains only the can't-blend fallback (libav VAAPI/NVENC, software). - session_plan::cursor_blend_for grows the no-channel arm (codec + depth in, the same CUDA-payload prediction handshake makes); gamescope excluded so patch-2+ keeps its native-NV12 zero-copy shape - the encode loop's composite refresh + one-shot breadcrumbs now cover the no-channel session; the park schedule keeps retrying while its composite is starved (relative-only clients cannot park themselves) - the compositor retarget re-applies set_hw_cursor — the rebuilt display used to come up EMBEDDED even for channel sessions - the GameStream virtual source takes the same rule (it never has a channel); its stream_body blend flag mirrors the request - punktfunk-probe grows --cursor-nochannel (the latched-capture client, headless); cursor-probe grows --dump (PPM frames + a content-change counter, the pixel evidence the embedded A/B lacked) Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
punktfunk — probe (reference client)
punktfunk-probe is the headless reference client for the punktfunk/1 protocol — a
command-line tool for testing, latency measurement, and validating host behavior. It's not a
streaming app you'd watch on; it connects, exercises a plane, and reports numbers. If you want to
actually stream, use the Linux, Windows,
Apple, or Android clients.
Because it links the same punktfunk-core as every other client, it's also the canonical
example of driving the protocol end to end: QUIC control plane, UDP data plane, and the side planes
(input, audio, rumble) over QUIC datagrams.
What it does
- Receives a real stream, writes a playable elementary stream (
.h265/.h264/.av1— the extension tracks the negotiated codec; the probe advertises all three and the host picks), and reports per-frame capture→received latency percentiles (the host stamps each frame with its capture clock). - Verification mode against a synthetic host — byte-checks deterministic test frames.
- Exercises every plane with scripted test traffic:
--input-test(mouse/keyboard),--mic-test(a 440 Hz Opus tone up to the host mic),--touch-test(a synthetic finger),--rich-input-test(DualSense touchpad + motion, logging the HID-output feedback that comes back). - Trust —
--pin <64-hex>pins the host fingerprint;--pair <PIN>runs the SPAKE2 pairing ceremony and prints the verified fingerprint to pin from then on. Without a pin it trusts on first use. - Discovery —
--discover [secs]browses the LAN for_punktfunk._udphosts and prints each (name, addr:port, pairing requirement, cert fingerprint), then exits. - Negotiation knobs —
--mode WxHxFPS,--remode(mid-stream mode change),--bitrate,--codec auto|h264|hevc|av1(preference; the host resolves),--audio-channels(stereo / 5.1 / 7.1),--compositor,--gamepad,--launch,--speed-test. Env:PUNKTFUNK_CLIENT_10BIT=1/PUNKTFUNK_CLIENT_444=1advertise the 10-bit / 4:4:4 client caps (for testing a host'sPUNKTFUNK_10BIT/PUNKTFUNK_444).
Usage
# stream 720p120 from a host, save the video, and print latency percentiles:
cargo run -p punktfunk-probe -- --mode 1280x720x120 --connect HOST:PORT --out /tmp/a.h265
# list hosts on the LAN:
cargo run -p punktfunk-probe -- --discover
# pair with a host that requires it (read the PIN off the host), then stream:
cargo run -p punktfunk-probe -- --connect HOST:PORT --pair 1234
cargo run -p punktfunk-probe -- --connect HOST:PORT --pin <64-hex> --input-test
Full flag reference is in the module doc-comment at the top of src/main.rs.
Related
- Project README — the host, the streaming clients, and the protocol
punktfunk-host punktfunk1-host— the persistent native-protocol listener to probe against (see the "Running on this box" section of the repo README /CLAUDE.md)