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Per the new docs workflow (docs-site = KB layer; repo docs/ keeps design notes): - Add a canonical Status & Progress tracker (status.md): milestones, per-box live state, and a dated progress log — the go-forward place to track progress. - Add setup guides: GNOME/Mutter host (gnome-box — Secure Boot MOK enroll, the libnvidia-gl EGL fix, autologin, screen-lock disable, appliance unit), headless KDE box, and Bazzite host (ujust input group, gamescope session, gotchas). - Roadmap is now canonical in docs-site (synced the skew-handshake section 12 update); removed the repo docs/roadmap.md copy and repointed README to docs-site. - Nav (meta.json) + landing cards updated; site builds (bun run build). Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
76 lines
4.4 KiB
Markdown
76 lines
4.4 KiB
Markdown
# punktfunk
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*A ground-up low-latency desktop streaming stack, built Linux-first, with a shared Rust
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protocol core and native clients per platform.*
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`punktfunk` is a placeholder codename. The bet: ship a **Linux virtual-display streaming
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host** that speaks the existing Moonlight protocol (every Moonlight/Artemis client works
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day one), then break the ~1 Gbps FEC wall with a **GF(2¹⁶) Leopard-RS** transport as a
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negotiated extension. See [`docs/implementation-plan.md`](docs/implementation-plan.md).
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## Status
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| Milestone | State |
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|-----------|-------|
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| **M1 — `punktfunk-core` + C ABI** | ✅ done & hardened (FEC, packetization, AES-GCM, session, adversarial-review fixes, `punktfunk_core.h`) |
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| **M2 — GameStream host → stock Moonlight** | ✅ live end-to-end: pairing, RTSP, audio, per-client virtual output at native res, GPU zero-copy NVENC, gamepads |
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| **M3 — `punktfunk/1` native protocol** | ✅ validated live: QUIC control + GF(2¹⁶) FEC/AES data plane, SPAKE2 PIN pairing, mid-stream mode renegotiation |
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| **M4 — client decode + present (Apple)** | 🟡 macOS first light: AnnexB→VideoToolbox HEVC on glass + input/pairing over `punktfunk/1` (`clients/apple`); iOS + presenter next |
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| **Web console + management API** | ✅ TanStack web console (`web/`) over the OpenAPI mgmt API: host status, paired devices, on-demand native pairing (arm → show PIN) |
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The **GameStream host works with a stock Moonlight client** — validated live on NVIDIA
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(RTX 5070 Ti & RTX 4090, driver 595): trust-on-first-use pairing that persists, an app
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catalog, RTSP/ENet/audio, and **video at the client's exact resolution and refresh** via a
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per-session virtual output (KWin, gamescope, Mutter, Sway backends), encoded with GPU
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**zero-copy** (dmabuf → CUDA/Vulkan → NVENC) at up to 5120×1440@240. The native
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**`punktfunk/1`** protocol adds a QUIC control plane and a GF(2¹⁶) Leopard-FEC + AES-GCM data
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plane (p50 ~0.8 ms capture→reassembled at 720p120), with a SPAKE2 PIN pairing ceremony. Both
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run from **one process** (`serve --native`), managed through a REST API + web console. Builds
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against FFmpeg 7 or 8; deployed live on Bazzite. Full status: [`CLAUDE.md`](CLAUDE.md);
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roadmap, setup guides & progress: the docs site ([`docs-site/`](docs-site) — Fumadocs;
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`bun run dev`), with the canonical [roadmap](docs-site/content/docs/roadmap.md) and
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[status](docs-site/content/docs/status.md) there. Design notes stay in [`docs/`](docs).
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## Layout
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```
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crates/
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punktfunk-core/ protocol · FEC · pacing · crypto · quic — the C ABI (lib + cdylib + staticlib)
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punktfunk-host/ Linux host: vdisplay · capture · encode · inject · gamestream · m3 · mgmt · native_pairing
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punktfunk-client-rs/ punktfunk/1 reference client (M3 headless; M4 adds decode+present)
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clients/{apple,android}/ native client scaffolds (import punktfunk_core.h); apple = macOS first light
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web/ TanStack web console (host status · paired devices · pairing) over the mgmt API
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packaging/ Fedora/Bazzite RPM · bootc image · COPR (see packaging/bazzite/README.md)
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include/punktfunk_core.h cbindgen-generated C header (checked in)
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tools/{latency-probe,loss-harness}/ measurement (plan §10)
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docs/{implementation-plan,roadmap,windows-host,dualsense-haptics}.md
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```
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## Build & test
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```sh
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cargo build --workspace # green on Linux and macOS
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cargo test --workspace # unit + loopback + proptest + C ABI harness
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cargo clippy --workspace --all-targets
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cargo run -p loss-harness # FEC loss-resilience sweep (no network needed)
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bash crates/punktfunk-core/tests/c/run.sh # standalone C-ABI link+round-trip proof
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```
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The C header regenerates from `crates/punktfunk-core/src/abi.rs` on every build (cbindgen via
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`build.rs`) into `include/punktfunk_core.h`.
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## Design invariants
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- **One core, linked everywhere.** Protocol/FEC/crypto/pacing live in `punktfunk-core` exactly
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once, exposed over a stable, versioned C ABI (`punktfunk_abi_version()`, `PunktfunkConfig`
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carries its own `struct_size`).
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- **No async on the hot path.** The per-frame pipeline uses native threads only;
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`tokio`/`quinn` are gated behind the off-by-default `quic` feature (control plane only).
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- **FEC is the wall-breaker.** GF(2⁸) (≤255 shards/block) for Moonlight compat;
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GF(2¹⁶) (≤65535 shards/block, SIMD, O(n log n)) to push past ~1 Gbps.
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## License
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MIT OR Apache-2.0.
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