Commit Graph
1504 Commits
Author SHA1 Message Date
enricobuehler c64cdc4ef7 docs(encode): close out the tile-aware AV1 sub-frame reader — measured, not worth it
#95 disarmed sub-frame readback for AV1, which means AV1 forgoes the latency
win HEVC gets from shipping slice 1 while slice 2 encodes. The follow-up was to
teach the reader AV1's units: cut on OBU boundaries rather than byte counts and
arm from the driver's reported unit count. Measured on .21 (RTX 5070 Ti,
av1_nvenc) before writing any of it, and the measurement closes it rather than
scoping it.

Reading the frame headers av1_nvenc actually emits at 4K:

  width_in_sbs_minus_1[0]      = 59        one tile column, the full 3840
  height_in_sbs_minus_1[0..1]  = 16, 16    two tile rows
  tile_start_and_end_present_flag = 0      BOTH TILES IN ONE TILE GROUP OBU

That last flag is the finding. "Cut on OBU boundaries" presumes the tiles are
separate OBUs and they are not — there is no boundary between them to cut on.
Shipping tile 1 early would need the HOST to re-author AV1 syntax per chunk,
synthesising a fresh Tile Group OBU header with tile_start_and_end_present_flag
= 1 and its own tg_start/tg_end. That is bitstream surgery on the encode path,
not the reader change it was assumed to be.

And the prize would be small even then, because split encode already spent it.
The two tile rows go to two split-encode engines that run CONCURRENTLY, so they
complete at nearly the same moment — the win is bounded by the skew between
engines, not by half a frame. Whole-frame encode measures 3.3-3.6 ms at 4K60
against a 16.7 ms p50 end-to-end, so even the sequential-tiles fantasy caps near
1.7 ms and the real number is a fraction of it. HEVC's win is bigger for a
structural reason that does not transfer: forced split and sub-frame are
mutually unsupported, so HEVC's slices genuinely are produced one after another.

1080p settles it further: tile_cols_log2 = tile_rows_log2 = 0, a single tile, so
there is nothing to pipeline at the commonest streaming resolution at all.

Recorded next to the disarm with the reopen condition named — NVENC emitting one
OBU per tile, or setting tile_start_and_end_present_flag = 1 — so this is closed
on evidence rather than left as an open maybe.

Documentation only — no behaviour change.
2026-08-07 19:26:32 +02:00
enricobuehler 6b4be28d24 docs(client): write down why the CPU rung is not process-isolated
#97's frame-context floor closes the one rav1d abort we hit and can prove. It
does not make the rung panic-proof and nothing at that call site can, because
rav1d's public surface is dav1d's C ABI: any reachable panic crosses
`extern "C"` as `panic_cannot_unwind` and becomes `abort()`, past every
`catch_unwind`, rung demotion and typed refusal we have.

Counted across rav1d 1.1.0's 60 source files: 285 `unwrap()`, 214 `assert!`,
19 `unreachable!`, 11 `expect()`, 10 `panic!`. 539 sites that end the client if
a stream can reach them. #97 fixed one of them.

Process isolation is the only defence that actually works, and this records the
decision NOT to build it, with the reasoning, so it is not re-argued from
scratch each time someone reads that number:

  * the defect is upstream's and is one line (memorysafety/rav1d#1497, filed
    2026-08-07 with the fix and a reproducer; still open, no PR, as of today);
  * 539 is an unbounded number, not a risk estimate — none of those sites is
    known reachable from a punktfunk stream, and the honest next step is to
    fuzz the rung and find out, which is cheap, rather than buy insurance,
    which is not;
  * the cost lands on the video path across Linux, Windows and Android (the
    Apple clients decode through VideoToolbox and never reach this code), each
    needing its own shared-memory frame transport, child lifecycle and
    backpressure, and it adds a scheduling boundary to the slowest rung on the
    ladder while zero-copy is a hard requirement;
  * an abort here costs a session that was already degraded — this rung exists
    because the GPU rungs failed first.

The trigger to revisit is named as an event rather than a feeling: a SECOND
distinct abort in the field, or a fuzzer finding a reachable panic. Either
makes it a class of bugs instead of one, and a class is what would justify the
architecture.

Documentation only — no behaviour change.
2026-08-07 19:25:22 +02:00
enricobuehler 669176982d fix(h264): name the DPB cliff #96 left standing in the other codec
H.264 derives its DPB size the same way HEVC did before #96 — from a level
ceiling that says what a stream MAY use, not what it needs — and the ceiling
saturates at 16 frames, which is 17 hardware slots with the picture in flight.
That is the exact arithmetic that cost 720p and 1080p their HEVC.

Measured on real encoders (2026-08-07) rather than assumed: H.264 escapes it
twice over, and both escapes belong to the encoders, not to the format.

  encoder                              level picked        VUI restriction
  NVENC (RTX 5070 Ti, 610.57.04)       3.2/4.2/5.1/5.2     present, buffering 3
  VAAPI via libavcodec (RDNA3, 26.0.3) 4.1/4.2/5.1/5.2     present, buffering 1
  openh264 (the software rung)         3.2/4.2/5.1/5.2     present, buffering 1

Every one picks a level proportionate to the picture AND states its real need
in the VUI bitstream restriction, so the ceiling is never reached and never
consulted. Nothing is broken today, and clamping would be wrong: with the
restriction present the number IS the stream's own statement, and a stream that
genuinely asked for a deep DPB would decode wrong if we shrank it.

So this does not change what any stream decodes. It gives the arithmetic one
named home (`dpb_limit`, the twin of `h265::dpb_limit`) carrying the evidence
and the reasoning, and it adds the signal that was missing: when an SPS carries
no restriction AND its level ceiling would demand more slots than mainstream
hardware provides, the plan now says so with `PlanWarning::LevelDerivedDpb`
instead of a user silently losing the codec the way #96's users silently lost
HEVC. It is not an integrity warning — the picture is intact; what fails is
opening a session — so `is_integrity_warning` classifies it false.

One thing the sweep corrects about how the follow-up was framed: it is SMALL
pictures that saturate the ceiling most easily, not 720p specifically. 640x360
at level 3.1 computes 16 as readily as 720p at level 5.0, because the ceiling
is MaxDpbMbs divided by the picture's macroblocks. The authored 64x64 test
fixtures land there too, which is why they now assert through `picture_warnings`.

Guards, as the missing consumer-end half of pf-encode's
`rfi_dpb_fits_a_mainstream_vulkan_decoder`:

  * every_reachable_h264_stream_fits_a_mainstream_slot_pool — the measured
    (picture, level, declaration) pairs, asserting slots <= 16
  * the_level_ceiling_alone_would_reproduce_96_and_is_warned_about — the same
    resolutions at levels that saturate, pinned WITH the warning
  * a_proportionate_level_fits_even_without_a_vui_restriction — so neither
    escape looks like it is doing all the work alone

Gates: fmt + clippy -D warnings clean; pf-client-core 167/167; pf-bitstream
84/84; and gpu_parity 8/8 bit-identical to libavcodec on the RTX 5070 Ti, which
is the gate that matters for anything touching the bitstream layer.
2026-08-07 19:15:53 +02:00
enricobuehler a8a4b11f5c Merge pull request 'HEVC died at 720p and 1080p because we sized the DPB from the level's ceiling, not the stream's need' (#96) from fix/hevc-dpb-level-ceiling into main
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Reviewed-on: #96
2026-08-07 16:21:31 +00:00
enricobuehler 8805a18375 Merge pull request 'A damaged AV1 frame stops killing the whole client (and a BOM stops erasing every setting)' (#97) from worktree-rav1d-single-frame-context-abort into main
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Reviewed-on: #97
2026-08-07 16:20:54 +00:00
enricobuehler e9ddc3c561 Merge pull request 'AV1 stops shipping half a frame' (#95) from worktree-av1-subframe-truncation into main
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Reviewed-on: #95
2026-08-07 16:19:28 +00:00
enricobuehler 8551e88fcb merge: bring current main into the audio-substrate branch
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Two conflicts, both unions of independent removals/fixes: main fixed the
same three install.rs SAFETY comments this branch fixed (main's phrasing
kept), and the runner provisioning drops BOTH env lines — main removed
PF_FFVK_VULKAN_INCLUDE (pf-ffvk is gone since the FFmpeg replacement),
this branch removed VBCABLE_DIR (the retirement).
2026-08-07 17:49:50 +02:00
enricobuehler bca63cd9ff docs(client/video): name the upstream rav1d issue next to the workaround
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memorysafety/rav1d#1497, filed with the one-line fix and a reproducer that
needs no capture — any AV1 stream with one temporal unit removed. Written down
where the setting is, because the next person to read `av1_settings` and
wonder whether the floor is still needed should be able to check rather than
re-derive it.
2026-08-07 17:48:54 +02:00
enricobuehler eb9203b115 fix(client/settings): a byte order mark stops silently erasing every setting
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`Set-Content -Encoding UTF8` writes a UTF-8 BOM, and every Windows how-to
reaches for it, so `%APPDATA%\punktfunk\client-windows-settings.json` edited
from a shell arrives with `EF BB BF` in front of the `{`. serde_json rejects
that at byte 0 — correctly, JSON has no BOM — and
`.and_then(|s| serde_json::from_str(&s).ok())` turned the refusal into
`Default`. Every setting in the file, gone, with the file plainly correct on
screen and not one word anywhere about why.

Cost an hour on 08-07: a `codec: "av1"` edit was ignored and the client
negotiated HEVC. The obvious suspects — the negotiation, the caps, the host —
were all working exactly as designed.

So the mark is stripped, which is what every other JSON consumer on Windows
does. But the BOM is only the instance; the bug is the `.ok()`, which hides a
trailing comma, a truncated write and a hand-edit typo just as completely.
Those now cost one `warn!` naming the file and serde's own line and column. A
file that cannot be READ at all is reported too, and for the same reason: PowerShell's
`-Encoding Unicode` writes UTF-16LE, `read_to_string` rejects it as invalid
UTF-8, and that lands in exactly the same hole.

The RESULT is deliberately unchanged — `Default`, never an error. Nothing about
streaming may hinge on a settings file being readable, and refusing to start
because one is malformed would be a worse failure than the one being fixed. A
missing file stays silent, because that is just first run.

All three of this client's JSON stores share the loader, because all three had
the identical line: the settings file, the known-hosts store (where a BOM
silently unpairs every host) and the profiles catalog.
2026-08-07 17:45:38 +02:00
enricobuehler 32ff93199f fix(client/video): a damaged AV1 frame stops killing the whole client
The software rung aborted the process — not the session, the process — the
first time a 4K AV1 stream lost a frame. Reproduced on .21 twice on 08-07,
`SIGABRT` a few hundred milliseconds after "first frame decoded".

It was never about 4K, and it was never our bitstream.

rav1d 1.1.0 kills the process on ANY decode error while it holds a single
frame context. `rav1d_submit_frame`'s `c.fc.len() == 1` branch calls
`rav1d_decode_frame` inline; that always finishes in
`rav1d_decode_frame_exit`, which does an unconditional
`mem::take(&mut f.frame_hdr)` (decode.rs:4873); and then, only if the decode
returned `Err`, the same branch re-enters a local `on_error` whose first act is
`f.frame_hdr.as_ref().unwrap()` (decode.rs:4997) — on the `None` the teardown
just left. The panic unwinds into `dav1d_send_data`, which is `extern "C"`, so
it is `panic_cannot_unwind` → `abort()`: no `catch_unwind` at our call site, no
rung demotion and no `NoSoftwareRung` refusal can catch it. The same code is in
upstream `main` today, and 1.1.0 is the newest release, so there is no version
to bump to.

4K was only where an error first HAPPENED. The CPU rung cannot keep up at
3840x2160 (35-39 fps against a 60 fps stream), so the receive backlog stopped
draining, `pump::data` flushed it and jumped to live, and the next AU
referenced frames nobody had decoded. libdav1d gives the identical verdict on
the identical capture — 13 frames, then "Invalid data found when processing
input" — and simply carries on. At 1080p the rung keeps up, nothing is ever
flushed, no AU is ever damaged, and the same code ran for years without
anybody seeing this.

So the fix is to stop asking rav1d for the configuration whose error path is
broken. `c.fc.len() > 1` never calls `rav1d_decode_frame` at all: it hands the
frame to `rav1d_task_frame_init` and errors come back through `cached_error` /
`task_thread.retval` as ordinary `EINVAL`s, which the pump already answers with
a keyframe request. Measured, against the captured 4K stream:

  n_threads=8 max_frame_delay=1  -> n_fc=1 -> ABORT
  n_threads=1 max_frame_delay=1  -> n_fc=1 -> ABORT
  n_threads=1 max_frame_delay=2  -> n_fc=1 -> ABORT   <- proves the rule
  n_threads=8 max_frame_delay=2  -> n_fc=2 -> 13 pictures, EINVAL, survives
  n_threads=8 max_frame_delay=0  -> n_fc=3 -> survives

The third row is why `n_threads` grows a floor of two as well as the delay:
`n_fc` is `min(max_frame_delay, n_threads)`, so one decode thread silently puts
the whole thing back on the aborting path. That row is also what rules out the
theory this investigation started with — pinning threads to 1 was the suspected
trigger, and it makes things WORSE, so the tile workers are innocent and the
single frame context is the entire defect.

Two frame contexts would normally cost a frame of latency, and this does not,
because `decode` now drains PAST the first `EAGAIN`. `rav1d_get_picture` only
reaches its blocking `drain_picture` on a call whose own `drain` flag is already
set, and that flag is set by the PREVIOUS `get_picture` and cleared by every
`send_data` that carried bytes — so the first `EAGAIN` after a send does not
mean "no picture for this AU", it means "ask again", and this AU's frame comes
out of the second call. Stopping at the first `None` is what a
single-frame-context reading of dav1d's API teaches, and it would have put the
pipeline two frames behind while looking perfectly healthy. Measured over 14
temporal units at `n_fc = 2`: stopping at the first `None` produces nothing at
all for units 0 and 1; draining past it produces one frame per unit from unit 0,
at 20-42 ms per unit against `n_fc = 1`'s 21-53 ms. Not a trade — same cadence,
slightly faster, because the tile workers overlap the drain.

`Av1Software::new` then asks rav1d itself, through `dav1d_get_frame_delay`,
what those settings actually bought, and refuses to open a decoder that would
run with one frame context. That is not a restatement of the arithmetic: it is
`get_num_threads`' own answer, so it stays right if rav1d's derivation changes.
It is there because the failure it guards is uniquely quiet — an edit that
reinstates `n_fc = 1` costs nothing at build time, nothing in the tests and
nothing on a clean link, and then kills the client the first time a frame
arrives damaged. Losing the rung is recoverable; `abort()` is not.

On glass, .21, 35-second sessions, `PUNKTFUNK_DECODER=software`:

  4K60 AV1   before: SIGABRT on the second frame, every run
             after:  exit 0, 0 panics, 35-39 fps, 1204 frames, decode_failed=0,
                     and 13 decode errors recovered from across 17 backlog
                     flushes — the exact condition that used to abort, survived
                     thirteen times in one session
  1080p AV1  after:  40 fps, decode p50 2.2 ms (2.1 ms before the change)

What this does NOT buy: rav1d has other `unwrap()`s, and because its whole
public surface is dav1d's `extern "C"` ABI — every internal `rav1d_*` entry
point is `pub(crate)` — no in-process guard can turn one of them into anything
but an abort. This removes the one we hit and can prove; it does not make the
CPU rung panic-proof, and the evidence table says so.

Reported upstream with a self-contained reproducer: the in-tree
`test-25fps.ivf.av1` vector with one temporal unit dropped aborts rav1d at
`n_fc = 1`, survives at `n_fc = 2`, and libdav1d decodes it with 145 error
reports and no crash.
2026-08-07 17:45:21 +02:00
enricobuehler 0ee690f8bc fix(client/hevc): the DPB we demanded was the level's ceiling, not the stream's need
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A punktfunk client streaming HEVC from .21 (RTX 5070 Ti) refused every access
unit with "stream needs 17 DPB slots, device caps at 16", flushed, waited for an
IRAP, got a fresh IDR that needed 17 too, exhausted the decode ladder and
reconnected with HEVC excluded. On a build with no software HEVC decoder — there
is no permissively licensed one — that is not a slower path, it is losing the
codec.

The host was blameless. Reading the SPS it actually emitted: general_level_idc
153 (L5.1 High, which NVENC autoselects at hevcConfig.level = 0 because a
130 Mbps target does not fit L5.0's 100 Mbps ceiling) and
sps_max_dec_pic_buffering_minus1 = 5 — six pictures, RFI_DPB references plus the
current one. Six, at every resolution. That is already the minimum the encoder
can honestly declare, and the only host-side lever, the level, cannot be lowered
without signalling a bitrate the stream exceeds. There was nothing to fix there.

dpb_limit was reading equation A-2 instead. A-2 is a CEILING on what an SPS may
signal — 7.4.3.2.1 constrains sps_max_dec_pic_buffering_minus1 to
0..=MaxDpbSize-1 — not a statement of what a stream needs, and it branches on
picture size against the LEVEL's MaxLumaPs. At 1080p the coded 1920x1088 =
2 088 960 luma samples fall under MaxLumaPs(L5.1) >> 2 = 2 228 224, taking the
first branch for min(4 * MaxDpbPicBuf, 16) = 16. max(A-2, buffering) then
reported 16 where the stream had asked for 6, the backends added one slot for the
picture in flight, and 17 is one more than NVIDIA's maxDpbSlots.

A resolution sweep on the box drew A-2's branch table exactly, and it is the two
commonest streaming resolutions that lost the codec:

  720p  1280x720  = 921 600     branch 1 -> 16 frames, 17 slots  82 refusals, HEVC dropped
  1080p 1920x1088 = 2 088 960   branch 1 -> 16 frames, 17 slots  41 refusals, HEVC dropped
  1440p 2560x1440 = 3 686 400   branch 2 -> 12 frames, 13 slots  clean
  4K    3840x2176 = 8 355 840   else     ->  6 frames,  7 slots  clean, decode 1.9 ms

One host, one level, one six-picture requirement. Only which branch the picture
size landed in decided whether HEVC worked. That is also why this hid for so
long: 4K was the resolution it was exercised at, and 4K is the one size that
falls through to the honest answer. H.264 escaped for an unrelated reason — its
own level-derived ceiling happened to land at 13 for 1080p L5.0 and 5 for 4K
L5.2 — but it is the same shape of derivation and would fail the same way if
NVENC ever picked a higher level for a smaller picture.

So dpb_limit now returns the stream's own sps_max_dec_pic_buffering_minus1 + 1,
capped at 16. That is not a workaround, it is what the number means: it is
exactly the bound C.5.2.2's fullness clause bumps against, and A.4.1 bounds the
total RPS entries by the same value, so `buffering` pictures hold `buffering - 1`
references plus the current one with nothing left over.

The max() that produced the 16 was written to be generous to malformed streams —
"storing their pictures beats erroring the AU" — but it never did that either.
Dpb::needs_bumping (C.5.2.2) already keys on the signalled buffering, not on
max_num_pics, so a stream referencing more pictures than it declared was ALREADY
being bumped below its own declared depth before every store. The widened limit
bought no tolerance at all; all it ever did was over-allocate hardware surfaces,
by ten pictures per session at 1080p, and on NVIDIA take HEVC away entirely.

The fix moves 720p and 1080p onto the pool shape 4K has been running in the field
all along (7 slots, 6 references), so it is not a new operating point — it is the
one already proven. max_active_references drops from 15 to 6, still above the 5
an RFI_DPB stream can name. The per-AU level gate in pf-vkdecode reads
plan.picture.level_idc directly, so dropping A-2 out of NegotiationInfo costs no
sensitivity to a mid-stream level change.

Two regression tests pin the arithmetic from both ends, because either end
drifting back reproduces this:

  - h265: the field SPS synthesized byte for byte on the fields that matter must
    plan 6 frames / 7 slots, all four resolutions must agree because the stream
    does, and every depth the envelope gate admits must leave room for the picture
    in flight. The one honest residue is pinned too and deliberately left
    refusing: A.4 does let a conforming stream declare a full 16-picture DPB, and
    17 slots genuinely do not fit 16, so that stream is still refused rather than
    decoded with too few slots and silently corrupted references.

  - pf-encode: RFI_DPB + 2 <= 16, guarding the producer end. RFI is a real
    latency win and this does not cap it at today's value — there are nine slots
    of headroom — it just stops it being raised past the point where clients can
    no longer decode us at all.
2026-08-07 17:34:17 +02:00
enricobuehler 6348334eff docs(client/video): the evidence table stops saying AV1 never decoded
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Two of its notes became false the moment the host stopped truncating AV1.

native D3D11VA / AV1 said "NEVER decoded a frame on any hardware". It has
now decoded 4K60 on an RTX 3500 Ada — and the same run is why the note
matters: its warn line named the rung as unproven moments before it
failed 72 access units running with "reference picture N holds no DPB
slot". That was the host shipping half of every frame, not the rung, so
the M7 wiring was right all along.

It stays UNVERIFIED regardless. `verified` gates `native_rung_admitted` —
whether `auto` may pick this rung ahead of Vulkan Video — and one
25-second session with no frame-hash parity and no soak does not buy
that. Promoting it wants a deliberate gpu_parity-style run. The note now
says what is true instead of what is convenient.

software / AV1 said rav1d had "CPU unit tests only". rav1d has now run on
glass: 1080p AV1 decodes, and 4K ABORTS THE PROCESS. It takes an internal
error path and panics inside its own on_error (rav1d 1.1.0
decode.rs:4997, unwrap on a None frame header); the panic crosses the
extern "C" boundary in dav1d_send_data, so it is panic_cannot_unwind and
no rung demotion or NoSoftwareRung refusal can catch it. libdav1d decodes
the same 4K stream 715/715, so this is rav1d's own defect and is recorded
where the next person to reach that rung will see it.
2026-08-07 17:06:35 +02:00
enricobuehler ebc2f1cf92 feat(host/audio): the minted microphone returns to tier-0 — pitch-true
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The revert un-reverts, on measurement: with the per-direction stamp sets
(render = the pad-proven PCM16-device/float-mix stereo split, capture =
device-format only), micpitch reads 440 Hz in as 440 Hz out at exact
peak. The octave-low voice was the driver DEFAULT endpoints disagreeing
(stereo render vs mono capture), never a raw-crossing design. The user
called the wrong verdict — the pad program 4ch success was the
counter-evidence that reopened the case.
2026-08-07 16:53:48 +02:00
enricobuehler c16e07d746 fix(encode/nvenc): AV1 stops shipping half a frame
Every 4K AV1 frame this host encoded reached the wire truncated to its
first tile, and had since AV1 was wired up. Measured on .21 (RTX 5070 Ti,
4K60, split AUTO): each access unit carried a frame header declaring two
tile rows and a single Tile Group OBU with tg_start = tg_end = 0, so
libdav1d rejected 835 of 836 AUs with "Error parsing frame header".
NVIDIA's hardware decoder accepts the truncated stream, which is why
native Vulkan Video looked healthy at 60 fps while both conformant
software decoders — rav1d in-tree and libdav1d out-of-tree — refused
every frame and clients fell to a black screen.

The two halves of sub-frame readback are armed by different conditions.
build_init_params arms the WRITER (enableSubFrameWrite +
reportSliceOffsets) from subframe_on alone; the chunked READER
additionally requires slices >= 2, and resolve_slices returns 1 for AV1
unconditionally — before the PUNKTFUNK_NVENC_SLICES override is even
read, because AV1 partitions via tiles rather than slices. So an AV1
session asked the driver to publish its output tile by tile and then took
only the first tile with one blocking lock_bitstream.

resolve_split_subframe — the one arbitration point both direct-SDK
backends already call — now disarms sub-frame for AV1 and returns
split_mode untouched, so AV1 keeps every engine split encode gives it.
Arming the reader instead is not a drop-in alternative: poll_chunk cuts
at bitstreamSizeInBytes on the reasoning that "slices are contiguous
Annex-B", which AV1's OBUs are not.

With sub-frame disarmed and split still AUTO, the same session decodes
654/654 frames clean through libdav1d.

The test that pinned this as correct (av1_untouched, "both features are
legal together") is replaced by one that pins the disarm, and by one that
checks the reader's gate against the writer's — the comparison nothing
made. The Linux latch comment claiming the two "can't disagree" is
corrected; that claim is what made this invisible.
2026-08-07 16:50:17 +02:00
enricobuehler 52cd42e911 fix(host/audio): capture endpoints get the device format only
Live bisect on a fresh endpoint: the mix/host format keys are
RENDER-engine properties — stamped onto a capture endpoint they broke its
shared-mode graph (IsFormatSupported reported 2ch/48k OK while Initialize
failed 0x88890008 on a once-stamped fresh endpoint; unstamped it opened
fine, S3). The capture now gets ONLY the device-format key — the knob
mmsys.cpl itself writes — declaring the stereo the pins actually accept.
2026-08-07 16:49:15 +02:00
enricobuehler 8c274d6256 fix(host/devtest): the probe asks stereo — its mono ask WAS the unopenable endpoint
Measured resolution of the 0x88890008 mystery: IsFormatSupported said the
capture accepts 2ch/48k shared while Initialize kept failing — because
the probe itself had switched to a MONO ask for frequency counting, and
this stack does not bridge channel counts on capture even under
autoconvert. Every unopenable-endpoint verdict after that switch was the
instrument, not the endpoint. Stereo ask restored; crossings counted on
channel 0.
2026-08-07 16:44:01 +02:00
enricobuehler 16e506f943 feat(host/devtest): audio-probe micpins — the driver-capability map
Exclusive+shared IsFormatSupported across {1,2}ch x {16,32}bit x
{44.1,48,96}kHz on both minted mic pins. Interrogates the DRIVER,
bypassing every endpoint-store stamping question: what the pins truly
accept decides whether the mic leg has any coherent configuration, and
whether an exclusive-mode mono open is an escape hatch. (The pad program
made its own breakthrough with exactly this instrument on the sibling
SSS driver.)
2026-08-07 16:39:48 +02:00
enricobuehler 2eed9823e5 fix(host/audio): the mic pair gets the pad-proven coherent stereo stamp set
The user challenged the format-locked-pins verdict, and the pad program
is the counter-evidence: it hit the SAME 0x88890008 unopenable-endpoint
signature and cured it with a COHERENT stamp set, after which the same
driver family served 4ch happily. This branch previous attempts were
contaminated twice over — a float device-format (the pad bisect proved
the split must be PCM16 device / float mix+host) and no
AudioEndpointBuilder restart (Restart-Service Audiosrv never touches its
dependency, so endpoint configs were never rebuilt). Both mic endpoints
now get one identical coherent stereo set; the octave-low hypothesis
shifts from "raw crossing by design" to "the two endpoint stores
disagreed (stereo render default vs mono capture default)".
2026-08-07 16:33:20 +02:00
enricobuehler cc53b3d6b0 fix(host/audio): unwire the minted microphone — the driver mic path is unusable
Final pitch-probe verdict on the SSM driver pair: the render pin is
stereo-only, the capture pin mono-only (stamping either differently makes
the endpoint unopenable), and the crossing between them is a RAW byte
pass — so voice fed through the render endpoint reads back an octave low
and no format stamp can fix it. S3 peak-based PASS = false pass; per the
design doc revert clause the mic falls back to the name ladder (a virtual
cable), pending the user re-decision. The SPEAKERS substrate keeps tier-0
(no driver crossing — a plain engine loopback tap, measured clean).

minted_ids() publishes speakers only; the mic endpoints stay minted and
recorded (provisioned()) for the micpitch probe and a possible future
non-render transport, and their format stamps now pin each side to its
pin one true format — healing the endpoints this branch earlier
mis-stamped.
2026-08-07 16:06:56 +02:00
enricobuehler 5922cbe325 fix(host/audio): the minted mic pair declares stereo on BOTH sides
Second measurement round: the driver render pin is STEREO-ONLY — the
mono render stamp turned the endpoint unopenable (0x88890008 on every
open, the incoherent-stamp signature the pad program documented). Since
the crossing is raw, the coherent choice inverts: the CAPTURE side now
declares the stereo float stream that actually crosses (fixing the
octave-low voice), and the render has its stereo float default stamped
explicitly — pinning the pair AND healing any endpoint a previous build
left mono-stamped.
2026-08-07 16:01:39 +02:00
enricobuehler ed98814145 fix(host/audio): the minted microphone renders MONO — voice was an octave low
Measured with the new pitch probe: 440 Hz into the minted mic render came
back as 220 Hz off its capture side. The driver forwards the render
stream RAW into its mono capture, so a stereo-declared render (the
driver-default we inherited) turns every stereo frame into two mono
samples — half speed, octave down, exactly the field report. The mic
render now gets a coherent MONO 48 kHz format set stamped alongside its
name (PCM16 device format + float mix/host formats), making the engine
downmix before the driver crossing. The mic pump keeps pushing stereo;
shared-mode autoconvert handles the rest.
2026-08-07 15:57:19 +02:00
enricobuehler 0cf76af0c2 feat(host/devtest): audio-probe measures pitch, not just peaks
Field report through the minted microphone: voice plays back an octave
low. Peaks are pitch-blind — S3 passed while a potential half-rate link
hid in the numbers (288k samples fits both the honest and the half-speed
story). Every probe measurement now estimates the dominant frequency by
zero crossings over the signal span, and `audio-probe micpitch` runs the
decisive experiment against the LIVE minted pair: 440 Hz in, frequency
out — ~440 = pair innocent, ~220 = the stereo render stream is forwarded
raw into the mono capture.
2026-08-07 15:53:00 +02:00
enricobuehler b166c53cc2 fix(vkdecode): a refused device says what the refusal costs, and about which format
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Three things the Intel Arc measurement showed were wrong or unhelpful in the refusal
path.

The message named NV12 whatever the stream was. A Main 10 session refused over P010
was told about NV12, which sends the reader to look up the wrong format's support.
Both variants now carry the format the driver's own entry reported.

A missing SAMPLED now says what it costs. "does not advertise usage SAMPLED" is
accurate and tells a field reporter nothing: the consequence is that no shader can
read this device's decoded pictures, so the zero-copy path cannot exist on it at all
— which is a different conversation from a device that is merely slower. The line
points at --probe-decode for the driver's own words.

And the probe's second opinion no longer claims to be one. Measured on both vendors,
vkGetPhysicalDeviceImageFormatProperties2 answers "creatable" for combinations the
video-format query rejects — on NVIDIA too, for SAMPLED alone, which is not a legal
video image usage at all. So it does not honour the chained profile list and must not
be read as permission; it is still printed, because otherwise everyone who reads a
refusal asks the question again, but it is labelled as not authority.

Also names the three video ENCODE usage bits, which NVIDIA advertises on decode
pictures and the probe was printing as "unrecognised 0xC000".
2026-08-07 15:44:07 +02:00
enricobuehler c06ee55b61 diag(vkdecode): --probe-decode reports what the driver says about video images
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The Intel Arc refusal moved one step down the caps query and stopped again: the
coincide NV12 entry does not advertise SAMPLED. That sentence is punktfunk's, not
the driver's, and the last two times a conclusion was drawn from a sentence of ours
the conclusion was wrong.

So --probe-decode now prints the driver's own answers instead. For every profile the
client can negotiate (H.264 High, H.265 Main and Main 10, AV1 Main 8- and 10-bit) it
asks vkGetPhysicalDeviceVideoFormatPropertiesKHR in six usage combinations — the
three the image pools really create with, plus DPB|DST without sampling, SAMPLED
alone and DST alone, which are what localise a refusal to a half. Each answer is
printed as the driver gave it: format, usage and create flags named AND in hex with
unrecognised bits called out, image type, tiling. A failed query prints its VkResult
rather than vanishing into an empty list.

It goes through pf-vkdecode's own query rather than a copy of it, which meant
splitting query_formats into a physical-device form — the call never needed the
VkDevice the old signature demanded. VideoFormat gains imageType and imageTiling to
carry the whole record; VUID-VkImageCreateInfo-pNext-06811 compares both for
equality, so they were being assumed rather than read.

And because a driver that under-reports usage would be indistinguishable from one
that genuinely lacks it, the probe asks a second, independent question —
vkGetPhysicalDeviceImageFormatProperties2 over the same profile list — and prints it
only where the two disagree. A disagreement is the finding.

No behaviour change to any decode path: derivation reads the same fields it did.
2026-08-07 15:34:12 +02:00
enricobuehler 7993386900 feat(host/audio): the minted endpoints get their names — 'Punktfunk Speakers/Microphone'
Field-measured necessity, not cosmetics: unstamped, the minted instances
read 'Lautsprecher (2- Steam Streaming Microphone)' and even the box's
owner picked the wrong device out of the Sound settings zoo (as did the
S1 probe's name match before it). The provider now stamps device-desc +
device-name through the pad program's proven machinery — write_stamps/
stamps_served, extracted from the pad-only stamp functions — with the
same store-first/registry-fallback routes and settle/re-pass discipline.
Names only: a wider stamp set makes AudioEndpointBuilder re-mint the
endpoint under a new GUID (measured on pads). Stamping is best-effort
(SYSTEM ACL route); the wiring never depends on names — identity stays
the recorded id.
2026-08-07 15:33:52 +02:00
enricobuehler ca667cb79a fix(vkdecode): the pNext order decided which struct got the decode caps
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Intel Arc never used Vulkan Video decode on Windows. The rung refused every
session with "driver advertises neither DPB_AND_OUTPUT_COINCIDE nor DISTINCT"
and fell back to D3D11VA — and that refusal was ours.

vkGetPhysicalDeviceVideoCapabilitiesKHR was called with the codec capability
struct chained BEFORE VkVideoDecodeCapabilitiesKHR (push_next prepends, so the
chain was caps -> h265_caps -> decode_caps). On Arc/Windows 101.8724 the driver
fills those two by POSITION, not by sType, and returned them SWAPPED. Measured,
on glass, both ways:

  before:  decode_flags_raw=12   max_level_idc=1
  after:   decode_flags_raw=1    max_level_idc=12

12 is STD_VIDEO_H265_LEVEL_IDC_6_2 and 1 is DPB_AND_OUTPUT_COINCIDE. We were
reading an H.265 level as a decode-capability bitmask; 12 contains neither 0x1
nor 0x2, so the check concluded the device had no DPB mode. It had one all along.
The base struct was fully populated throughout — 15 DPB slots, 8192x8192 max
extent — which is what gave the lie away: a driver that answers in that much
detail is not declining.

NVIDIA and RADV dispatch by sType and do not care about the order, which is
exactly why the fleet stayed green and this reached the field. Both orders are
spec-legal for us to write; only one survives a driver that assumes the
conventional one, and the conventional one — decode caps first, as every Vulkan
sample writes it — is now what all three codecs use.

⚠ This does NOT yet give the Arc Vulkan Video. It moves the refusal one step
down the same function: the device advertises only COINCIDE (no DISTINCT), and
its NV12 coincide entry does not advertise SAMPLED usage, which the zero-copy
presenter path needs. Whether that is a second bug of ours or a real Intel
constraint is not yet established, and this commit does not claim it either way.

Found because the user disbelieved my "Intel driver bug" conclusion. He was
right: I had reasoned from our own error message, which is the same circularity
the caps logging added in fb1a0a61/a183cac8 now exists to break.

Gates: fmt clean; clippy -D warnings; 187 pf-vkdecode tests. The GPU parity legs
that cover this code cannot run here (no GPU on the build host) — the evidence
is the on-glass A/B above.
2026-08-07 15:07:48 +02:00
enricobuehler a183cac8aa diag(vkdecode): log maxLevelIdc beside the decode flags
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The Arc returned decode_flags=0b1100 = 12 with a fully populated base struct (15
DPB slots, 8192x8192 max extent). Neither COINCIDE (0x1) nor DISTINCT (0x2) is
set, and 0x4|0x8 are not defined for that field at all — but 12 IS
STD_VIDEO_H265_LEVEL_IDC_6_2, and VkVideoDecodeCapabilitiesKHR and
VkVideoDecodeH265CapabilitiesKHR have identical layouts (sType, pNext, one u32).

So the suspicion is that we are reading H.265's maxLevelIdc where the decode
flags belong. Logging both settles it: if max_level_idc comes back as 1 or 2 the
two structs are crossed, and the refusal is ours rather than the driver's.
2026-08-07 14:55:27 +02:00
enricobuehler fb1a0a61e9 diag(vkdecode): log the driver's video capabilities verbatim
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Nothing in the caps module logged anything, so when a device refused with
"advertises neither DPB_AND_OUTPUT_COINCIDE nor DISTINCT" there was no way to
separate two very different situations that present identically as a zero: the
driver filling the chain and genuinely declaring no DPB mode, versus our own
pNext chain never reaching VkVideoDecodeCapabilitiesKHR at all.

Printing the BASE VkVideoCapabilitiesKHR beside the decode flags is the
discriminator. A populated max_dpb_slots next to decode_flags: 0 means the
driver traversed the chain and answered; zeros across both mean the query never
landed and the refusal is ours, not the driver's.

Raised by the Intel Arc result on .221, where I concluded "driver bug" on the
strength of our own code's report — which is precisely the circular reasoning
this line exists to break.
2026-08-07 14:50:08 +02:00
enricobuehler c34e1412fb fix(client): a decoder pin with a stray space was silently ignored
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Found on glass, and it cost a whole session to find. PUNKTFUNK_DECODER was read
untrimmed, so "native-vulkan " — ONE trailing space — matched no arm of
native_vulkan_gate, fell through to `auto`, and on an Intel box `auto` takes
d3d11va first. The operator's pin never ran and NOTHING said so. Read against a
log, that is indistinguishable from the rung being refused for a hardware
reason, which is precisely the ambiguity the rest of this module's logging was
just rewritten to remove.

The space is not exotic. A Windows .cmd produces it for free: `echo x>> file`
keeps the space before the redirect, so every line written that way carries one.
PUNKTFUNK_VK_ADAPTER already trimmed; this did not, and the inconsistency is what
made it invisible — the GPU override obeyed while the decoder override did not.

The rule now lives in one pure function, resolve_decoder_pref, called by BOTH
readers. decode_pinned_to_software had the identical untrimmed expression, and
its own doc comment says a second reading of the same two inputs is a second
place for them to drift — fixing one and not the other would have proved it
right. Whitespace-only counts as ABSENT rather than as a pin to "", because an
exported-but-empty variable means "no override" and "" is a value the gate
happens to accept.

Tested as a pure rule (no process environment), including the end-to-end leg
that matters: the trimmed pin reaches native_vulkan_gate and is admitted. Like
the create-array tests in dee97e89 its before-state is a compile error rather
than a failing assertion, because the function is new — what it guards going
forward is real, and an editor who drops the trim fails it.

Gates: fmt clean; clippy -D warnings over pf-client-core,
punktfunk-client-session and pf-presenter in the Linux container; 164
pf-client-core tests.
2026-08-07 14:34:59 +02:00
enricobuehler c0f8f051c3 fix(client): the probe printed a device index the env var does not take
--probe-decode printed its DISPLAY position and called it the
PUNKTFUNK_VK_DEVICE value. It is not. pick_device resolves that variable against
the RAW vkEnumeratePhysicalDevices order (setup.rs, `devices.get(i)`) BEFORE any
ranking runs, while the probe sorts discrete-first for readability.

Those two orders disagree precisely on the hardware this flag exists to
diagnose. pick_device's own comment records why the ranking is there: "enumeration
order puts the iGPU FIRST on some hybrids (observed: Ryzen iGPU ahead of an RTX
dGPU)". So on a hybrid laptop the number the probe printed for the iGPU could
well be the number for the dGPU — a diagnostic handing out an actionable value
that selects the other GPU, which is worse than printing none.

Measured on the Arc + RTX 3500 Ada laptop, which is also where the first output
went out with the wrong claim in it: three adapters, and the same Arc iGPU
enumerated TWICE. So AdapterDecode now carries the raw enumeration index,
captured before the sort, and the printer uses it; the "default presenter"
marker stays on the first LISTED entry, because sorted-first is what pick_device
lands on when nothing overrides.

The duplicate is why the trailing hint names PUNKTFUNK_VK_ADAPTER as the safer
knob and admits its limit: two adapters sharing a marketing name cannot be told
apart by it, and a name match resolves to whichever enumerates first. The hint
also states the thing this whole output invites a reader to get wrong — that a
capable GPU in the list does not mean the decoder will use it, because Vulkan
Video decodes on the presenter's device and PUNKTFUNK_DECODER does not move the
presenter.

Gates: fmt clean; clippy -D warnings on punktfunk-client-session and pf-presenter.
2026-08-07 13:52:23 +02:00
enricobuehler 31bb3ca7f7 Merge pull request 'The console answers a mouse and a finger, and host cards get a menu' (#90) from worktree-console-tabs-pointer into main
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Reviewed-on: #90
2026-08-07 11:38:41 +00:00
enricobuehler d49f955171 fix(console/host menu): the actions get their explainer line and room to breathe
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The rows sat hard against the pinned title — the menu is the one form screen
with no subtitle, so the list started at the very top of the content band. It
now wears Add Host's explainer, which both says what the menu is for and is the
air that keeps the first row off the title. A pinned card explains what unpinning
does and does not touch, the same wording the Android dialog uses.

Caught by the screenshot pass, not by a test.
2026-08-07 13:29:59 +02:00
enricobuehler 507ea58da8 fix(host/audio): the silent-sink check recognizes the minted Speakers
Observed in the first real session on the substrate: the loopback ran on
the minted 'Punktfunk Speakers' (silent on the host by construction), but
have_silent name-matches only the Streaming Microphone — so the capture
open logged 'desktop audio will also play on the host' (false) and
re-attempted the Steam-pair install it doesn't need. The minted sink is
recognized by id; its name honestly says Speakers, which the name rule
must keep refusing for FOREIGN instances.
2026-08-07 12:59:15 +02:00
enricobuehler 413a3e3e76 feat(client): say which GPU can do Vulkan Video, and why not when it can't
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Field report from an Intel Arc + NVIDIA laptop: pinning the Vulkan rung on the Arc
iGPU silently produced D3D11VA, and there was no way to tell whether the build had
tried at all. That ambiguity was ours, in three places.

The "unavailable" log printed three of the FIVE conjuncts that gate Vulkan Video.
A device with 1.3, the features and a decode queue family — but no codec extension
— logged dev_is_13=true features_ok=true decode_family=true next to the word
"unavailable" and named nothing actionable. It now prints all five, plus which
base extensions are missing, which codec extensions are present, the decode
family's own advertised codec operations, and the device name and vendor. It also
no longer says "VAAPI/software" on Windows, where the rung below is D3D11VA.

The native-vulkan PIN refusal logged `video_decode` alone. On a device that
decodes something but not THIS codec, that reads as a contradiction: refused, yet
video_decode=true. It now carries the caps mask and the codec bit that was wanted,
so "your GPU can't" is distinguishable from "we asked for the wrong thing" — only
the second is our bug.

And `--probe-decode` is new: per-adapter Vulkan Video capability with no session,
no surface and no logical device. For each GPU it answers usable yes/no, the
driver's own decode ops, the extensions, and — when the answer is no — which
conjunct failed, in words. Separate from --list-adapters, which the desktop shells
parse line-by-line for their GPU picker and which therefore keeps printing bare
names.

The listing is ordered like pick_device (discrete first) and marks entry 0 as the
default presenter, because that ordering is very likely the reporter's actual
answer: pick_device ranks DISCRETE_GPU above INTEGRATED_GPU, Vulkan Video decodes
on the PRESENTER's device by design (that is what makes it zero-copy), and
PUNKTFUNK_DECODER does not move the presenter. So on a hybrid laptop, pinning the
decoder while the dGPU presents probes the wrong GPU entirely —
PUNKTFUNK_VK_DEVICE=<index> is the knob that moves it, and the index printed is
that value.

To keep the probe honest, VIDEO_BASE and VIDEO_CODECS moved to module scope and
the five-way AND became video_decode_gate(), called by both the probe and device
creation. A probe holding its own copy of the rule is one that eventually reports
a capability the session then refuses — which reads to everyone as a decoder bug
rather than a probe bug.

Gates: fmt clean; clippy -D warnings over punktfunk-client-session and
pf-presenter. The Linux container was unavailable (the host's disk filled and took
the docker daemon with it), so this ran on the macOS host target only — the
container leg is owed, and CI covers it on the PR.
2026-08-07 12:42:33 +02:00
enricobuehler f06b3d9d04 feat(console): the console answers a mouse and a finger, and host cards get a menu
Two gaps, both found on the shared Linux/Windows console UI.

**The settings tabs only moved for a gamepad.** They were bound to the shoulder
buttons and to PgUp/PgDn, and the legend spells PgUp/PgDn out only when NO pad is
attached — so with a controller plugged in a keyboard user had nothing to find,
and a mouse or a touchscreen could not change section at all.

The root cause was wider than the strip: `SkiaOverlay::handle_event` matched only
`KeyDown` and `TextInput`, so every mouse button, wheel and touch contact fell
past the console into the run loop, which routes pointer input exclusively at
`stream.capture` — `None` while you are browsing. Nothing in the console had ever
been clickable. Making just the pills answer would not have helped either: the
settings screen is opened with X from home, so a mouse could not reach it.

So the console gets a real pointer path:

- `Overlay::handle_pointer` carries mouse/touch in SWAPCHAIN PIXELS. The run loop
  converts (it owns the window, hence the display scale, and mouse coordinates are
  logical while fingers are normalised); the console then hit-tests the very rects
  it drew last frame. Only DIRECT touch devices are offered — an indirect trackpad
  already drives the mouse.
- Widgets act on the PRESS, not the release. The list and both carousels scroll the
  focused item toward the centre, so what you pressed has slid out from under your
  finger by the time it lifts; press-to-act has no such race and there is no drag
  gesture to compete with.
- The hint bar became the pointer's button bar. It is already the console's only
  on-screen statement of what the face buttons do, and a pointer has none — so its
  Confirm/Back/Secondary/Tertiary pills are clickable on every screen, which is what
  puts Settings and Library within reach of a mouse at all.
- Tab / Shift+Tab change section; PgUp/PgDn still do, and the keyboard legend now
  reads "Tab".
- Right-click is Back everywhere, EXCEPT at the root: B there quits the launcher and
  a right-click is far easier to fire by accident. Quitting stays explicit.

**Host cards had no menu.** Every other client hangs Wake / Copy link / Edit /
Forget off a host card; the console could add a host and connect to one, and that
was all — so a renamed machine or a fat-fingered address stayed wrong forever
unless you opened a desktop shell. UP on a saved tile now opens that host's menu,
the same gesture the Android console uses, on the one direction a horizontal
carousel leaves free.

- `ConsoleCmd::UpdateHost` edits the stored host IN PLACE. Removing and re-adding
  would silently drop the fingerprint, the learned MAC, the pinned cards and the
  profile binding — that is a rename, not a re-pair.
- `ConsoleCmd::ForgetHost` drops it; if it is still advertising it returns as a
  discovered, unpaired row, which is the honest state.
- Forget arms on the first press and fires on the second. The other clients forget
  outright; a console is driven by a thumbstick from across a room.
- A pinned profile card offers only Unpin. It is a shortcut, not a second host, and
  offering to forget the host from it would blur exactly the distinction a pin draws.
- "Edit…" REPLACES the menu on the stack rather than stacking over it, so Back from
  the editor doesn't land on a menu describing the host as it was before the edit.

Verified in the pf-lxcheck2 container (this crate compiles to nothing on macOS —
a bare `cargo check` there is vacuous): plain build and `clippy --all-targets`
clean under `-D warnings`, 72 tests pass. Seven are new, and cover the reported
bug directly — a press on a pill selects that tab, and each tab still keeps its
own cursor when a pointer is what switched it.
2026-08-07 12:36:22 +02:00
enricobuehler 99a59fb5c7 fix(host/audio): the mic pump's first resolve waits for the minted endpoints
Measured on the target box: the pump wired 2 s before the provisioning
worker latched, took the cable as its write target, and the next wiring
pass would then have paired the default recording with the minted
microphone — which nothing writes into: dead mic-air until a pump reopen.
resolve_target now provisions synchronously (instant once latched; the
opt-out env is honoured), so the pump's held device and the plan's verdict
can never disagree.
2026-08-07 12:02:48 +02:00
enricobuehler 3870cdd1da feat(host/mgmt): the audio wiring verdict joins /status
RuntimeStatus gains an 'audio' object (Windows hosts): readiness
(full/audio_only/mic_only/none), the friendly names carrying each role,
and the three degradation flags (mic_withheld, last_resort, narrowing) —
the verdicts that previously lived only in tracing logs. Snapshot of the
last wiring pass (the mic pump wires at host start and on every reopen);
a status poll never triggers COM work or IPolicyConfig writes.
2026-08-07 11:53:15 +02:00
enricobuehler 79c72fa64d fix(host/audio): capture endpoints carry the {0.0.1.…} id prefix
The capture-direction lookup built its endpoint id with the RENDER prefix
{0.0.0.00000000}., but WASAPI's enumeration returns capture ids as
{0.0.1.00000000}.{guid} — so the minted microphone's capture side never
string-matched the enumeration and the wiring plan paired no recording
device (audio-probe plan on the target box: mic_capture = '-'). Measured;
IMMDeviceEnumerator::GetDevice tolerated the wrong prefix, which is why
the S3 spike's direct open still passed.
2026-08-07 11:37:39 +02:00
enricobuehler 64655c5275 fix(host/devtest): audio-probe plan provisions synchronously
A fresh CLI process has no startup worker to have finished, so the plan
devtest raced its own background provisioning thread and printed the name
ladder instead of tier-0. ensure_blocking() re-resolves existing marker
devnodes in milliseconds before the wiring pass runs.
2026-08-07 11:32:05 +02:00
enricobuehler 4a621de6b1 chore(packaging): retire VB-Cable — audio's substrate is Steam's drivers
The other half of the audio-substrate decision (spikes S2+S3 green, minted
endpoints landed in the previous commit): stop bundling a third-party
kernel driver the host no longer needs.

  installer      the VB-CABLE task, payload, silent-install run and the
                 donationware notice are gone; a suppressible notice tells
                 a Steam-less box that audio needs Steam INSTALLED (never
                 running) and that installing it later just works. A cable
                 from an older install is still deliberately not removed.
  packer + CI    -VbCableDir/VBCABLE_DIR, the staged-payload check and the
                 runner provisioning download are gone; SBOM drops the
                 redistributed-driver component.
  winget         the VB-Audio bundling-grant agreement becomes the honest
                 Steam requirement (surfaced on the unattended path where
                 no wizard is on screen).
  docs           windows-host/uninstall/security/echo say what actually
                 ships: no kernel-mode driver of our own, endpoints minted
                 from Valve's vendor-signed drivers, VB-CABLE mentioned
                 only as the historical fallback that keeps working.
  host wording   the mic-open guidance and module headers lead with Steam;
                 the NAME ladder itself is untouched — demoting 'cable
                 input' was considered and rejected (on a box where minting
                 transiently fails, the SSM would outrank an installed
                 cable, steal the silent sink, and make audio host-audible).
2026-08-07 11:27:29 +02:00
enricobuehler 5aa1ca392e Merge pull request 'fix(host/encode): the Windows host build stops failing on unused split-encode helpers' (#86) from worktree-fix-winhost-clippy-dead-code into main
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Reviewed-on: #86
2026-08-07 09:22:57 +00:00
enricobuehler 0b160a4e22 feat(host/audio): minted Punktfunk endpoints become the wiring plan's tier-0
The audio-substrate program's Phase 2 (spikes S2+S3 measured green on the
target box): the host mints its OWN instances of Valve's streaming-audio
drivers and wires by IDENTITY instead of borrowing Steam's primaries —

  minted.rs      the provider: one devnode per role ('Punktfunk Speakers'
                 from SteamStreamingSpeakers.inf, 'Punktfunk Microphone'
                 from SteamStreamingMicrophone.inf), marker-matched across
                 restarts (PunktfunkAudioRole in Device Parameters — names
                 are NOT identity, a minted instance is name-identical to
                 the primaries), provisioned on a startup worker like pad
                 audio, retried with a 60 s cool-down from wiring passes,
                 defaults restored when a fresh endpoint grabs them.
  wiring_plan    MintedIds tier-0: the mic takes its minted device outright
                 (capture side paired by the provider's id — a name search
                 cannot tell it from the primary), the loopback prefers the
                 minted sink at the head of the silent tier, an operator
                 override still beats everything, a narrowing minted sink
                 demotes below real hardware, and stale ids fall back to
                 the ladder unchanged. Plus AudioReadiness — the
                 full/audio-only/mic-only/nothing classification, logged
                 with every plan change (§C4's seed).
  audio-probe    'mint' runs the provider synchronously; 'plan' prints one
                 real wiring pass + readiness — the field-triage command.

Without Steam's drivers nothing changes: provisioning degrades to absent
ids and the plan keeps the name-based ladder (primaries → cable → real
hardware) exactly as before.
2026-08-07 11:22:06 +02:00
enricobuehler f49f22a292 fix(host/encode): the Windows host build stops failing on unused split-encode helpers
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The Windows host job died in its clippy step: eight items in pf-encode's
split-encode policy (`SPLIT_AUTO`..`SPLIT_DISABLE`, `resolve_split_mode`,
`max_forced_split_mode`, `clamp_to_engines`) were reported as never used, and
`-D warnings` turns that into a build failure. Nothing about the encoder was
wrong — the items simply have no reader in one particular build of the crate,
and nothing was telling the compiler that.

`codec.rs` compiles on every platform, but the split policy only ever has a
caller on Linux (the libav NVENC path reads it unconditionally) or on Windows
with the `nvenc` feature (the direct-SDK backend). A featureless Windows build
of pf-encode has neither, so every item in the cluster is genuinely dead there.
Gate them on the union of their callers' cfgs, the way `forced_split_width`
next door already is.

The step lints pf-encode itself WITH `--features nvenc,amf-qsv,qsv`, where the
items are live, which is why this was invisible there; the failure came from the
next command in the same step, `clippy -p pf-vdisplay`, which pulls pf-encode in
as a plain default-features dependency. Same item-level `dead_code` trap this
crate has now hit five times.

Verified: default-features pf-encode reproduces all eight errors before the
change and none after (macOS default-features exercises the identical
"cluster has no caller" arm as featureless Windows — the two remaining errors
there, `vbv_frames_env` and a redundant closure call, are pre-existing and
macOS-only; both items have real Windows callers). Linux default-features and
Linux + nvenc `--all-targets` both stay clean, so the callers still see the
policy. `cargo fmt` clean.
2026-08-07 11:11:15 +02:00
enricobuehler bbbcf321e5 Merge origin/main into worktree-native-decode-m0
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main moved 93 commits while this branch ran. Two conflicts, both where main's new
work sat next to M10's excision:

packaging/flatpak/io.unom.Punktfunk.yml — main added the vendored gamescope WSI
layer (the only route to HDR on a Deck) and, before it, a vulkan-headers module.
Took both: this branch predates them and deletes neither. But the headers module's
stated consumer was pf-ffvk's bindgen over FFmpeg's hwcontext_vulkan.h, and M10
deleted pf-ffvk — so it now reads as dead weight to the next person. It is not:
the WSI layer IS a Vulkan layer, compiles against those headers, and builds after
it, so module order is the dependency. Rewrote the rationale to say so, including
why dropping it would be expensive to discover — flatpak.yml has no pull_request:
trigger, so a manifest break reaches main invisibly and a tag then ships no Linux
flatpak. Also recorded that the native decoder needs nothing from there: pf-vkdecode
reaches Vulkan through ash, which is pure Rust bindings, no bindgen, no C headers.

crates/pf-console-ui/src/screens/settings.rs — main restructured the gamepad
settings into TABS, which removed the per-row section headers; this branch had left
Some("Video") untouched from the merge base and added the pre-M10 decoder migration
next to it. Git could not tell those apart. Took main's structure (no header, its
deliberate change) with this branch's migration layered on: a stored `vulkan`,
`vaapi` or `d3d11va` names no preset in the tabbed list and would render as "—",
then silently rewrite the user's preference on the next save.

Gates on the merged tree, Linux container: fmt clean; cargo check --workspace
--all-targets clean; clippy --workspace --all-targets -D warnings clean; tests
green across pf-vkdecode (187), pf-client-core (163), pf-console-ui (58) and
punktfunk-host (447 of 448 — the one failure is the pre-existing
gamestream::stream::tests::sender_delivers_batches, a UDP-loopback EINTR under
qemu that fails identically on a pristine HEAD).
2026-08-07 10:50:32 +02:00
enricobuehler 03ee3e55d7 feat(host/devtest): audio-probe — the audio-substrate spike measurements
The S1-S3 spikes from windows-audio-endpoints-and-vbcable.md as one
runnable devtest (no game, no client, ssh-drivable):

  audio-probe ssm          S3, the decision gate: mint a SECOND devnode of
                           Valve's Steam Streaming Microphone driver and
                           prove the pair end to end (tone into its render
                           endpoint must come back out of its capture
                           endpoint). Pass = a punktfunk-owned virtual mic
                           needs no VB-Cable wherever Steam is installed.
  audio-probe sink         S2: mint a Speakers instance, park the DEFAULT
                           playback on it, tone through the default device,
                           WASAPI-loopback the instance - the desktop-audio
                           capture path minus the game.
  audio-probe sss-primary  S1: the primary Speakers' known-silent loopback,
                           re-measured, with mix format + steam.exe state.
  audio-probe cleanup      remove every probe-minted devnode (marker value
                           in Device Parameters, never name-guessing).

pad_endpoint grows the first slice of the design's §C1 shared minting
surface: create_media_devnode(desc, hwid, mark), bind_driver(hwid, inf),
find_capture_endpoint_for_devnode — the pad provisioner now calls the
same functions. The probe restores whatever default devices the minting
disturbed before it exits.
2026-08-07 10:47:00 +02:00
enricobuehler 152047051c fix(host/windows): three SID unsafe blocks get their safety proofs
install.rs (landed 2026-08-05 with the security-review remediation, while
the Windows CI runner was down) fails windows-host.yml's clippy gate:
#![deny(clippy::undocumented_unsafe_blocks)] wants the SAFETY comment on
the line preceding EACH unsafe block, and three blocks didn't have one —
two sat behind a comment anchored to the enclosing closure/neighbouring
statement, and EqualSid had none at all. Comments only; no behavior
change.
2026-08-07 10:38:03 +02:00
enricobuehler 3608de25ed Merge pull request 'fix(ci): runner hygiene stops eating its own jobs' (#84) from worktree-ci-runner-hygiene into main
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Reviewed-on: #84
2026-08-07 08:37:42 +00:00
enricobuehler ef8214415f fix(host/audio): game audio outranks the mic on cable-less boxes
The wiring plan reserved the mic target unconditionally first, so on a box
without VB-Cable the mic took the Steam Streaming Microphone — the only
working client-only loopback sink — and desktop audio fell to the
known-silent Speakers last resort: a headless Steam-only host streamed
SILENCE (the 2026-08 field case), and the installer's 'optional (mic
passthrough)' wording never warned anyone.

The mic may now hold the Streaming Microphone only while the loopback still
gets a preferred (non-last-resort) pick without it — another silent sink or
real hardware. Otherwise the loopback takes the endpoint and the mic falls
to a lesser candidate or is honestly withheld (Wiring::mic_withheld), with
the open error naming the trade and the remedy. An operator
PUNKTFUNK_MIC_DEVICE override is exempt: an explicit choice may still
strand the loopback on the last resort.

Also: the Steam-pair auto-install latch is now once per INF-state instead
of once per process — an attempt made while Steam was absent re-arms when
its driver INFs later appear (files are invisible to the endpoint-set
fingerprint, so nothing else would ever retry), and a withheld mic skips
the pointless reinstall (the pair exists; the plan gave it to the loopback).
2026-08-07 10:29:37 +02:00
enricobuehler 75dfab1d35 fix(host): a reconnecting session inherits its launch instead of starting it again
apple / swift (pull_request) Successful in 1m33s
apple / screenshots (pull_request) Skipped
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ci / rust (pull_request) Canceled after 6m55s
ci / rust-arm64 (pull_request) Canceled after 6m35s
windows / build (x86_64-pc-windows-msvc) (pull_request) Canceled after 3m6s
Two defects, found while tracing M8's codec-fallback reconnect and recorded
verbatim in d5e23146 as out of scope there.

A client retry re-sends Hello::launch verbatim, and the host launched
unconditionally. Steam and Epic URIs hide it — the launcher focuses the running
copy — but a gog:/custom: target really did start a SECOND COPY of the game. The
client cannot fix it by dropping the field: on Linux the per-session gamescope is
re-adopted through pf-vdisplay's display registry, whose reuse key includes the
launch command, so a retry without it orphans the running game.

And the retry minted a fresh launch_stamp, so procscan refused to adopt a game
started more than 2 s before it — the game was minutes old, so a reconnected
session had no game-exit detection for the rest of its life.

Both are now answered by a launch registry (launchreg.rs): one record per (client
fingerprint, library id), written at launch time and INDEPENDENT OF THE
TERMINATION POLICY. That independence is the point. The existing fingerprint-keyed
reclaim only exists under GameOnSessionEnd::Always — under the default Keep,
arm_grace is never called, so nothing was recorded at all in exactly the
configuration the defect was reported in.

The design correction that matters: at launch time the host knows NOTHING about
the game's processes — that is the premise of the whole lease design. So identity
flows BACKWARDS from the watcher, which publishes the concrete ProcRefs it
adopted, and the registry's liveness is Scanner::alive over that recorded set,
re-verified by (pid, start). Never a re-scan by spec: a later scan would find a
copy the player started since, and adopting that is what procscan's rule 1
forbids. The published set is never cleared on exit either — the last thing the
watcher saw is what makes a quit game read Gone rather than "no opinion", which
is how it becomes relaunchable at once instead of being suppressed for the window.

On rule 1: an adopting session inherits the older floor, so its own find() admits
what the ORIGINAL session's lease already admitted for its whole life. That is the
correct reading of "the same launch, continued" and not a new exposure — rule 1
forbids adopting processes that PREDATE the launch, and these postdate it.

The match rule is pure and total (covers()): liveness is authoritative where it
has an opinion, and only Unknown falls through to the tie-breakers — a live holder,
or a 90 s in-flight window for a re-dial while the launcher is still working. Gone
beats both, deliberately: a title that crashed on startup must relaunch at once.

Both race orders are handled and neither is relied on. Teardown-first takes the
Running arm; handshake-first (a fast re-dial on a half-open connection) takes the
holders>0 arm, and the old teardown then sees superseded() and does nothing —
without which, under Always, it would arm a grace the new session had already
passed its chance to reprieve, and the reaper would kill the new session's game.

Two tradeoffs taken deliberately: a custom: command with no detection hints stays
Unknown forever, so that reconnect trades game-exit detection for not
double-spawning; and IN_FLIGHT_WINDOW is a fixed 90 s rather than sharing
disconnect_grace_seconds, because the two have opposite failure costs — grace
being wrong leaves a game running, this being wrong silently swallows a launch the
player asked for.

Gates: fmt clean; clippy -p punktfunk-host --all-targets -D warnings green in the
Linux container; 418 passed, +9 exactly the new tests. One failure,
gamestream::stream::tests::sender_delivers_batches, is pre-existing and
environmental — a UDP-loopback EINTR under qemu at stream.rs:1697, outside every
hunk in this change (the last is at +448), and it fails identically on a pristine
HEAD. I reproduced both the failure and its location myself rather than taking it
on report.

⚠ OWED: the Windows leg is COMPILE-UNVERIFIED. cargo check --target
x86_64-pc-windows-msvc dies in ring's C build on macOS and xcheck.sh does not
cover punktfunk-host. The Windows edits are small restructures of existing
branches plus a bool assignment, reasoned through but seen by no compiler. Run it
on .133 before this merges.

I narrowed that exposure by inspection afterwards, and it is smaller than the
blanket warning suggests. The change presents exactly two things to a Windows
compiler that a Linux one did not already see. launchreg gates only alive_count
(lines 227/231), whose cfg(any(linux, windows)) arm calls
Scanner::system().alive(procs) — the identical call gamelease.rs:563 already makes
in code that compiles on Windows today. And the Windows launch arm at
native/stream.rs:1666 reads only ungated bindings the Linux arm type-checks thirty
lines below it (adopt_launch:1658, spawned_now:1663, launch_claim:1463) and calls
only the pre-existing library::launch_title. No new type, no new signature, no
Windows-only API.

That is an argument, not a compile. The run on .133 is still owed.
2026-08-07 10:14:21 +02:00
enricobuehler 138a1f1b2f fix(host/windows): the staging-dir SID checks document their unsafe blocks
ci / web (pull_request) Successful in 1m9s
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clippy's undocumented_unsafe_blocks (deny) flagged the three blocks that
81039581 introduced: the SAFETY comment sat outside the closure, so
IsValidSid/EqualSid inside it read as undocumented, and from_raw_parts
shared a comment that only covered the GetLengthSid line above it. Windows
host clippy is the only leg that lints this cfg(windows) code, red since.
2026-08-07 10:11:04 +02:00