enricobuehler
12843fe253
Adds a client-selectable **preferred codec** and wires the core + ABI + probe + Linux client to
negotiate and decode it. (Windows/Apple/Android follow in 2b.)
**Core:**
- `Hello.preferred_codec` (a single CODEC_* bit, 0 = auto) — a soft hint appended after
`video_codecs`. `resolve_codec(client, host, preferred)` now honors the preference when the host
can also emit it, else falls back to precedence (HEVC > AV1 > H.264). Roundtrip + preference tests.
- `NativeClient::connect` takes `video_codecs` + `preferred_codec`; `NativeClient.codec` exposes the
resolved `Welcome.codec`.
- ABI: `punktfunk_connect_ex7` (adds the two codec params; `ex6` delegates to it advertising
HEVC-only) + `punktfunk_connection_codec` getter + `PUNKTFUNK_CODEC_{H264,HEVC,AV1}` constants
(drift-guarded against the wire values). Header regenerated.
**Host:** passes `hello.preferred_codec` into `resolve_codec`.
**probe:** `--codec h264|hevc|av1|auto` sets the preference (still advertises it can decode all
three); the dump extension already follows the resolved codec.
**Linux client:** advertises the codecs FFmpeg can actually decode (`decodable_codecs()`), threads
the user's `codec` setting as the preference, and builds the decoder — both the software and VAAPI
paths, plus the mid-session VAAPI→software demotion — from the negotiated `Welcome.codec` instead of
hardcoding HEVC. New "Video codec" dropdown in Preferences (Automatic/HEVC/H.264/AV1).
Live-validated on the dev box: probe `--codec hevc` against a software (H.264-only) host resolves to
H.264 (graceful soft-preference fallback), no failure. clippy + core (57) + host (133) tests green.
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
Windows host build/deploy scripts
Helper scripts for the Windows host box (the RTX .173 lab box, repo at
C:\Users\Public\punktfunk-native). Run them from the repo root in an elevated PowerShell.
One-time: persist the build environment
powershell -ExecutionPolicy Bypass -File scripts\windows\setup-build-env.ps1
Persists (Machine scope) the three vars the NVENC build needs:
| var | value | why |
|---|---|---|
PUNKTFUNK_NVENC_LIB_DIR |
C:\Users\Public\nvenc |
NVENC import lib (nvencodeapi.lib) |
LIBCLANG_PATH |
C:\Program Files\LLVM\bin |
bindgen (libclang.dll) |
CMAKE_POLICY_VERSION_MINIMUM |
3.5 |
audiopus_sys / cmake crates |
FFMPEG_DIR is not set — the --features nvenc build the RTX box uses does not link
libavcodec (that is only the amf-qsv feature). The VS C++ toolchain is loaded per-build via
vcvars64.bat (auto-discovered with vswhere).
Rebuild + redeploy the host service
powershell -ExecutionPolicy Bypass -File scripts\windows\deploy-host.ps1
Stops PunktfunkHost, backs up the current binary (punktfunk-host.exe.bak), builds
--release -p punktfunk-host --features nvenc from the current source, then restarts the
service on the new binary — with automatic rollback if the build fails or the new binary
won't start. The service is down only for the build duration.
Web management console
On an installed host (the setup.exe) the console is set up automatically — no manual steps.
The installer bundles the built (self-contained, no-node_modules) .output server + a portable
bun and runs punktfunk-host.exe web setup, which registers the PunktfunkWeb scheduled task
(at boot, as SYSTEM, restart-on-failure) running {app}\web\web-run.cmd →
bun …\.output\server\index.mjs on :3000, opens inbound TCP 3000, and writes the login password to
%ProgramData%\punktfunk\web-password (ACL'd to Administrators + SYSTEM). The mgmt bearer token it
proxies with is the host's own %ProgramData%\punktfunk\mgmt-token. Browse http://<host-ip>:3000
and log in with the password the installer shows on its final page. To change it, edit
web-password and re-run the task: schtasks /run /tn PunktfunkWeb.
Rebuild + restart the console (dev box)
powershell -ExecutionPolicy Bypass -File scripts\windows\build-web.ps1
bun install && bun run build (Nitro noExternals -> a self-contained .output, no
node_modules/.npmrc), then restarts the PunktfunkWeb task and checks :3000/login. Use
this to iterate on the console against an installed host - punktfunk-host.exe web setup (or a
fresh install) is what creates the task in the first place.
Typical flow after pulling new code
git pull
powershell -ExecutionPolicy Bypass -File scripts\windows\deploy-host.ps1
powershell -ExecutionPolicy Bypass -File scripts\windows\build-web.ps1