enricobuehler
d0d9bd5bfb
design/midstream-resolution-resize.md Phase 0 + Phase 1. Host (Phase 0): - H1/H5: per-backend Reconfigure acceptance gate — reject for gamescope (all sub-modes; a resize must never relaunch the title) and under the per-client-mode identity policy (a resize would resolve a different display slot). Synthetic stays reconfigurable on purpose (the protocol test source; the C-ABI roundtrip test rides it). Plus a 500 ms host-side min-interval backstop against Reconfigure spam. - H2: rollback/corrective ack — the data plane reports the mode actually live after a failed rebuild (or a refresh the backend capped) through a reconfig_result channel; the control task forwards it as a second accepted Reconfigured so the client's mode slot self-corrects. - H3: live stats mode — SendStats reads a packed AtomicU64 (w|h|hz) updated on every switch instead of latching the session-start mode. - H4: registry::retire(gen) — a mode-switch rebuild force-releases the superseded Linux display, so linger/forever keep-alive policies don't accumulate kept monitors at stale modes. VirtualOutput carries pool_gen (fresh AND reused) and the Pipeline tuple threads it to the switch arm. Client (Phase 1, default off): - Settings: match_window policy + persisted last window size; exposed as the Resolution tri-state (Native / Match window / explicit) in the Skia console, GTK and WinUI settings pages. - pf-presenter: window opens at the persisted size; Hello mode follows the window's pixel size; D2 trigger discipline (400 ms debounce to resize-end, ≥1 s spacing, even-floor + ≥320×200 clamp, each distinct size requested at most once — covers rejects and host rollbacks) as a pure, unit-tested decision; HUD line + title refresh on a switch. - Session binary wires both --connect and --browse paths; the WinUI shell is session-always, so this covers Windows too. Verified: workspace tests + clippy green; synthetic --remode end-to-end; live session-binary run (window at persisted 1000×600 → Hello 1000×600@60). On-glass per-backend matrix (Mutter/KWin/gamescope-reject, keep-alive accumulation) still pending before any default flip. Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
punktfunk — Windows client
The native Windows app for streaming a punktfunk host to your PC. A modern WinUI 3 app that discovers hosts on your network, pairs with a PIN, and streams at your display's own resolution and refresh rate — with a hardware-accelerated D3D11 video path and HDR.
It's pure Rust: the UI is WinUI 3 driven through windows-reactor
(a declarative, React-like framework), and it links the shared punktfunk-core directly to speak
the fast punktfunk/1 protocol.
Features
- Hardware decode, GPU present — FFmpeg HEVC with a D3D11VA zero-copy path (decoder and
presenter share one D3D11 device; NV12/P010 textures sampled straight into a
SwapChainPanelcomposition swapchain), with a robust software-decode fallback. - HDR10 — advertise 10-bit/HDR, detect PQ in-band, and flip the swapchain to
R10G10B10A2+ ST.2084 with HDR10 metadata. - Your display's native mode — the host builds a virtual display at exactly your WxH@Hz.
- Audio both ways — WASAPI render + mic capture.
- Full controller support — SDL3 gamepads with rumble, lightbar, and DualSense feedback.
- Your display's native mode, really — "Native display" resolves the actual size + refresh of the monitor the window is on at connect time.
- Find hosts automatically — mDNS discovery lists hosts on your LAN, alongside saved and manual entries. First connect does a one-time SPAKE2 PIN pairing (or TOFU on trusted LANs), then reconnects on a pinned identity. Saved hosts carry per-host actions: a network speed test (probe burst over the real data plane → recommended bitrate, applied in one tap) and forget.
- Polished shell — host cards, settings (resolution / refresh / host compositor / decoder / codec / bitrate / HDR / forwarded controller / gamepad type / system shortcuts / audio channels / mic / stats-overlay level), the tiered stats overlay (Off / Compact / Normal / Detailed — Ctrl+Alt+Shift+S cycles it live in the session window), and the full trust surface. Stream input uses Win32 low-level hooks with Moonlight-style capture: Ctrl+Alt+Shift+Q releases the pointer, a click on the stream re-captures it, and system shortcuts (Alt+Tab, Win, …) can act locally or forward to the host.
Builds and ships for both x64 and ARM64 as a signed MSIX.
Get it
Install the signed MSIX from the package registry — see docs.punktfunk.unom.io/docs/install-client. A stock Moonlight client also works over GameStream if you prefer.
Build from source
Windows-only (the crate builds as a stub on other platforms so the workspace stays green). You need
the MSVC toolchain, an FFMPEG_DIR FFmpeg tree, and CMake (SDL3 builds from source). windows-reactor's
build.rs downloads the Windows App SDK NuGets and needs CARGO_WORKSPACE_DIR set.
cargo build -p punktfunk-client-windows --target x86_64-pc-windows-msvc
# CLI paths for testing (no window):
punktfunk-client --discover # list hosts on the LAN
punktfunk-client --headless --connect host[:port] [--pin HEX] # connect, count frames, print stats
punktfunk-client --headless --speed-test --connect host[:port] # probe burst → recommended bitrate
CARGO_HOMEmust be an ASCII path — non-ASCII characters break SDL3's MSVC precompiled-header build. Packaging (MSIX manifest, signing) lives inpackaging/.
Layout
src/
main.rs entry point + CLI paths (--discover · --headless · --speed-test)
app/ WinUI 3 shell (windows-reactor), one module per screen:
mod (root/router) · hosts · connect · pair · speed · settings ·
licenses · stream · style (shared cards/pills/monograms)
present.rs · gpu.rs SwapChainPanel D3D11 composition swapchain; shared D3D11 device
video.rs FFmpeg HEVC decode (D3D11VA zero-copy + software fallback)
audio.rs WASAPI render + mic capture
gamepad.rs SDL3 controllers + rumble/lightbar/DualSense feedback
input.rs Win32 low-level hooks → host input (pointer lock · click-to-capture)
session.rs session lifecycle over the NativeClient connector (+ speed probe)
trust.rs · discovery.rs persistent identity, TOFU/PIN pairing, mDNS browse
packaging/ MSIX manifest, signing, pack script
Related
- Documentation — quick start, pairing, troubleshooting
- Project README — the host, the other clients, and how it all fits together