Commit Graph
183 Commits
Author SHA1 Message Date
enricobuehler bfed711921 Merge remote-tracking branch 'origin/main' into audio/latency-overhaul
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2026-08-08 00:16:02 +02:00
enricobuehler 12a5318397 fix(audio): place audio with the picture instead of wherever the ring settles
The host stamps `pts_ns` on every audio datagram and the client decoded it
into `AudioPacket` — and then never read it. Video's `pts_ns` is used end to
end (the presenter computes a true glass-to-glass `displayed + clock_offset −
pts`), so audio free-ran at whatever depth its jitter ring happened to reach,
video was presented on an independent path, and nothing ever compared them.
The A/V offset was an accident of buffer depths: it moved whenever the ring
ratcheted under underrun pressure, and it got WORSE every time video got
faster, because a quicker decoder lowers the video leg and leaves audio's
exactly where it was. That is what a field report on the Steam Deck heard as
"the audio delay is way too high", and it is why shaving milliseconds off the
audio budget had not helped.

Video is the master. In a game streamer the video leg is the input-feel budget
and must never be inflated to satisfy the audio clock, while audio tolerates
small crossfaded corrections that are inaudible — and `crossfade_drop` already
applies them. So audio moves:

  audio_e2e = (now + buffered_ahead + clock_offset) − pts_ns
  av_offset = audio_e2e − video_e2e        (> 0 ⇒ audio behind the picture)

`AvSync` smooths that with an EWMA, ignores what sits inside a deadband no
listener can detect, refuses the implausible outright rather than clamping it
(a wall-clock step must not steer the ring), and proposes a depth.

Continuity outranks sync, always. `JitterPolicy::set_sync_target` only ever
takes a REQUEST, clamped between the existing underrun-driven floor and the
hard cap. A link whose jitter genuinely needs more buffer than the picture is
away keeps its buffer and the residual is reported — sync can never starve the
ring into dropouts. `None` is the default and reproduces the previous behaviour
exactly, so the four client rings can adopt this one at a time without
diverging.

Two upstream defects found on the way, both prerequisites:

* The host stamped `pts_ns` at ENCODE time, inside the loop draining an
  already-accumulated chunk, so every frame of a chunk carried near-identical
  timestamps describing when we got round to encoding. Harmless while nothing
  consumed it; a sync loop regulating against it would regulate against a
  fiction. It now comes off the capture clock.
* The host did not pace. One capture callback hands over a whole quantum — 5 ms
  when the graph honours our ask, 21.3 ms on a VM, where stock PipeWire raises
  `min-quantum` to 1024 — and the loop drained all of it into back-to-back
  `send_datagram` calls. The wire carried a 4-5 frame burst then ~21 ms of
  nothing, and a ring can only absorb that by standing a burst period deep.
  Frames now leave on the audio clock, which costs no average latency.

And the reason none of this was visible: `buffer_ms`/`target_ms` existed only
as a `tracing::debug!` line, absent from `Stats`. On a Deck the client runs
under Steam's `reaper` with stdout on a pipe nobody can read, so the one number
identifying a deep ring was unobtainable on the device reporting the latency.
The HUD now carries `audio buffer N ms · a/v ±N ms` — both, because a deep ring
on a jittery link is correct and only the offset separates that from audio held
late. The host also reports its negotiated quantum against the one it asked
for, per capture open rather than once per process.

Verified: 364 core + 40 presenter tests on Linux, clippy -D warnings clean on
punktfunk-{core,host} + pf-{client-core,presenter}, fmt clean. New tests pin
the safety invariant (sync cannot pull the target below the continuity floor on
any preset), that `None` leaves the policy bit-identical, and that a device
quantum exceeding the hard cap does not panic `Ord::clamp` inside a realtime
callback.

Android and Apple keep today's behaviour (the `None` default) until their
presenters publish a video figure to align against; design/audio-latency-
overhaul.md carries the plan.
2026-08-07 23:33:45 +02:00
enricobuehler 5a4305c072 merge: bring current main into the gyro correctness branch
main moved ~60 commits while this branch was in progress, and one of them matters
here: PR #88 (the phone-gyro mirror) landed, touching the same motion path.

One conflicted file, `GamepadCapture.swift`, in three places — all of them the two
changes meeting rather than disagreeing:

- **Slot fields.** #88 added `motionSent` + `lastAccel` for its flush-parks-motion fix;
  this branch removed `lastMotionNs` with the 4 ms drop-throttle. Kept both decisions:
  the parking state stays, the throttle field goes.
- **forwardMotion's head.** #88 added the mirror stand-down (`pad 0` yields while the
  phone speaks for it); this branch deleted the throttle guard. Kept the stand-down,
  dropped the guard.
- **The send.** This branch converts into the DualSense report frame; #88 records what
  went out so `flush` can replay it beside a zero gyro. Both, with the recording placed
  AFTER the conversion — `flush` replays `lastAccel`, so it has to be the vector that
  actually went on the wire, or a still pad's gravity gets parked in the wrong axis.

The two features compose exactly, which is worth stating because it is not luck: this
branch gates motion capture on `hasRotationRate`, and #88 engages the phone mirror when
`hasRotationRate != true`. They are complements — a pad either drives its own gyro or the
phone mirrors for it, never both and never neither.

Everything else auto-merged. Note `DeviceGyroRemapTests` is `#if os(iOS)`, so the macOS
suite reports the same 215 as before the merge rather than gaining #88's six — checked,
not assumed.

Gates re-run against the merged tree rather than trusting either side's: Linux fmt +
build + `clippy --locked --all-targets -D warnings` + punktfunk-core and pf-inject
suites; Apple 215 tests and the iOS-triple typecheck; Android kit + app compile and
tests. All green.
2026-08-07 19:34:22 +02:00
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 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 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 5c4969fd6b fix(client/pads): the gyro cut-off asked about the session, not the pad
Supersedes the check 77797a9e shipped an hour ago. The suppression, the
log-once, and the "unknown must not suppress" rule all stand; the field it reads
does not.

77797a9e read `Welcome.gamepad` — the backend the host resolved for the SESSION
— and stopped sending motion when it had no motion plane. But the host does not
build pads from that. It builds each virtual device from that pad's own
`GamepadArrival` (`Pads::set_kind`) and falls back to the session default only
for a pad that never declares one, which is precisely why `declared_kind` exists
and why its doc comment says an explicit setting has to be re-declared per pad.

So the check had a false negative, and it is an ordinary living-room setup. Under
"Automatic" the Hello carries the ACTIVE pad's kind (`auto_pref`), so a couch
with an X-Box pad on slot 0 and a DualSense on slot 1 echoes Xbox360 — while the
host, reading pad 1's arrival, builds it a DualSense with a working motion plane.
The old check read the echo, saw no motion plane, and killed pad 1's gyro. That
is the exact failure 77797a9e's own commit message names as the worse of the two
("a false negative kills working motion"), introduced by the fix for the other
one.

The question is per pad, so the slot now carries what it declared, beside the
physical `pref` it already held. The two are deliberately separate fields
answering different questions: `pref` is the controller in the user's hands, which
is what the local feedback paths must keep reading, and `declared` is the one the
host is pretending to have.

Three facts decide the predicate, and they are written out in
`pad_motion_reaches` rather than at the call site because all three clients need
the same reasoning:

- the echo is not this pad's answer when the pad declared something else;
- the host FOLDS what it cannot build — a Switch Pro on Windows, any UHID backend
  on a host whose /dev/uhid is unusable — and nothing client-side can predict it;
- but the echo IS one observed sample of that fold, for the kind the Hello asked
  about, so it is authoritative for a pad that declared exactly that.

Hence: trust the echo when declared == asked, else fall back to the declaration.
That keeps both motivating cases — a generic pad under Automatic (declares X-Box
360, suppressed, the sweep's H5c) and an explicit Switch Pro folded to X-Box 360
by a Windows host (declared == asked, so the echo catches it, H5d) — where either
field alone gets one of them wrong. `requested_gamepad` is kept on the client
next to `resolved_gamepad` for this: the pair is what makes the echo usable per
pad, and a lone field would only tempt the next reader back into the session-level
question.

The residual gap is a pad whose declared kind differs from the session's AND gets
folded: we keep sending and the host keeps dropping. That is the direction to be
wrong in, and it is what the session-level check was worth in the first place —
wasted datagrams, not a dead gyro.

Non-vacuity proven both directions rather than assumed. Reverting to
`resolved.has_motion()` fails on the mixed-pad row; reverting to
`declared.has_motion()` (no echo at all) fails on the Switch-Pro-on-Windows row.
Each case in the table is a session someone can actually sit down to, and the
comment on each says which of the three inputs decides it.

Gate (Linux CI image, pf-lxcheck2): fmt, `build -p punktfunk-core`, `build -p
pf-client-core`, `clippy --locked --all-targets -D warnings`, and both test
suites — green, with the new case observed in the run's own `... ok` line rather
than inferred from a green gate, and pf-client-core's 163 unchanged.
2026-08-07 16:46:06 +02:00
enricobuehler c34e1412fb fix(client): a decoder pin with a stray space was silently ignored
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ci / docs-site (pull_request) Successful in 1m44s
ci / rust-arm64 (pull_request) Successful in 2m23s
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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 77797a9e20 feat(client/pads): stop streaming gyro into a session that cannot receive it
G8 of the gyro program, SDL-client half.

The `Welcome` has always carried the backend the host actually RESOLVED, which
is not necessarily the one the client asked for — Auto lands on Xbox 360 for
anything not Sony/Valve/Xbox, and a Switch Pro on a Windows host folds to X360
too. No client read the field. So a player with an 8BitDo, or a Switch Pro on
Windows, got a controller whose gyro did nothing, with nothing anywhere saying
why: the client shipped ~250 Hz of Motion datagrams and the host parsed and
discarded every one.

`GamepadPref::has_motion()` answers whether a backend has a motion plane at all.
The SDL client checks it on the first gyro sample: it logs one line naming the
resolved backend and pointing at the fix (pick a DualSense-class controller
type), then stops sending. Once per slot, not per sample — this path runs at the
pad's sensor rate.

`Auto` deliberately answers true. It means "unknown" — an old host that omitted
the echo, which may well have resolved a DualSense — and suppressing motion on
unknown would silently break working gyro, a worse failure than sending
datagrams nobody reads. The predicate is an exhaustive match so a new backend
has to state its answer rather than inherit one, and a table test pins both
halves: a false negative kills working motion, a false positive keeps the void
open, and both are silent.

Owed: the plan wants this surfaced as a one-line UI hint, not just a log line.
Apple already stores `resolvedGamepad` and Android needs the plumb; neither is
done here, and both want their own gate.

Gate (Linux CI image): fmt, build, clippy --all-targets -D warnings, and the
test suites — green, with the new capability test observed running.
2026-08-07 13:52:27 +02:00
enricobuehler 4834c2ee51 fix(host/pads): DualShock 4 gyro ran 40× fast, and no pad ever stopped turning
Phase 1 of the gyro program (design/gyro-program.md, G1-G5) — the five
correctness fixes under it. Gyro aim integrates angular velocity over time, so
each of these is not a cosmetic wrongness: a wrong scale is every rotation being
the wrong size, a wrong clock is every rotation being integrated against a
fictional dt, and a stale sample is rotation that never happened.

G1 — the DualShock 4 calibration blob. A Sony pad does not assume a motion
scale, it reads one out of a fixed calibration feature report. Ours declared
0.5 LSB per °/s and 8192 LSB/g while the wire delivers 20 and 10000, so every
DS4-type session decoded gyro 40× too fast and acceleration 1.22× hot — since
the backend shipped. The blob now states the wire's own units (the DualSense
blob's numbers, deliberately: both pads consume the identical wire sample). Its
interleaved per-axis order is NOT a bug and stays: the virtual pad declares
BUS_USB, where interleaved is the correct layout; grouped is Bluetooth's.

The same blob lives a second time in the UMDF driver, which is a separate WDK
workspace that cannot depend on pf-inject — one wrong table in two files, where
fixing one reads as fixing it. Both are fixed, and the DS4 feature reports now
live in dualshock4_proto beside the DualSense's rather than in the Linux
backend, so there is one canonical copy to point at.

Field hosts keep the old blob until they update the host package.

G2 — the gate that would have caught it. Nothing pinned any backend's
declaration against the wire, so tests/motion_contract.rs now applies the
CONSUMER's arithmetic (the kernel's, and SDL's, which differ) to each backend
and asserts the result lands back on the wire constants — for the DualSense and
DS4 blobs, and for the Deck and Switch Pro rescales. It also parses the driver's
Rust source and re-derives the units from THAT, so the two copies cannot drift.
Verified non-vacuous both ways: re-introducing the old blob fails with "declares
a fractional 32/64 LSB per °/s", and reverting only the driver's copy fails with
"the UMDF driver's DS4_FEATURE_CALIBRATION has drifted from pf-inject's".

The wire units themselves move to punktfunk_core::input::gamepad, referenced by
the client's capture scale, the Deck/Switch rescales, and the probe — whose
at-rest vector said 16384 (a driver's number, not the wire's) and now says 1 g.

G3 — real sensor clocks. The DualSense advanced its sensor timestamp by +1 raw
unit per report (0.33 µs — a frozen clock) and the DS4 by a flat +188 (~1 ms)
regardless of the real 4-8 ms cadence. Anything integrating rate × dt off that
field got nonsense. All four backends now stamp elapsed monotonic time in their
own units via a shared SensorClock, anchored to the pad's first report so an
irregular publish loop cannot make it drift, and truncated to the field width —
which reproduces the wrap real hardware does.

G4 — motion is level-triggered and had no watchdog. merge_frame preserves the
last sample and the heartbeat re-emits it, so a feed that stops leaves the pad
rotating forever — and with G3's honest clock, at a dt that keeps growing.
Rumble and the pen plane each have an idle timeout; motion now has one too, at
100 ms. Angular velocity only: acceleration is kept, because gravity is
legitimately persistent and blanking it reads as free-fall. The SDL client
parks its gyro at zero when a slot closes, which is the case we can flush
rather than wait out. (The Apple half of this rides in PR #88.)

G5 — a pad returning inside the 300 ms replug grace keeps the same device and
skips the create path, so a different controller inherits the previous one's
touch contact and rotation — and a pad with no gyro never sends a sample to
correct it. sweep() now reports re-claims separately from drops, and the manager
clears the rich plane on one. Rich fields only: rumble and hidout dedup
deliberately survive a removal.

Gates (Linux, CI image): fmt, build, clippy --all-targets -D warnings over
pf-inject/punktfunk-core/punktfunk-probe/pf-client-core, and the test suites —
110 pf-inject unit + 6 contract + 29 pf-client-core gamepad, all green.
Not yet verified on glass; the on-glass sign/scale session is G16.
2026-08-07 12:47:26 +02:00
enricobuehler 413a3e3e76 feat(client): say which GPU can do Vulkan Video, and why not when it can't
ci / bun-nix (pull_request) Successful in 29s
ci / rust-arm64 (pull_request) Successful in 1m44s
windows / build (aarch64-pc-windows-msvc) (pull_request) Successful in 1m5s
apple / swift (pull_request) Successful in 1m35s
apple / screenshots (pull_request) Skipped
android / android (pull_request) Successful in 3m21s
windows / build (x86_64-pc-windows-msvc) (pull_request) Successful in 2m1s
ci / rust (pull_request) Successful in 4m27s
ci / docs-site (pull_request) Failing after 16m24s
ci / web (pull_request) Failing after 16m25s
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 bbbcf321e5 Merge origin/main into worktree-native-decode-m0
ci / web (pull_request) Successful in 1m19s
apple / swift (pull_request) Successful in 1m32s
ci / docs-site (pull_request) Successful in 1m23s
apple / screenshots (pull_request) Skipped
ci / bun-nix (pull_request) Successful in 25s
windows / build (aarch64-pc-windows-msvc) (pull_request) Successful in 1m8s
android / android (pull_request) Successful in 3m31s
windows / build (x86_64-pc-windows-msvc) (pull_request) Successful in 3m23s
ci / rust-arm64 (pull_request) Successful in 5m36s
nix / flake (pull_request) Failing after 11m59s
ci / rust (pull_request) Successful in 14m27s
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 5c05246098 feat: M10 — FFmpeg is gone from the client
cargo tree -p punktfunk-client-session finds no ffmpeg. The host still does,
which is the whole point: pf-encode keeps libavcodec unconditionally and no
host workflow, packaging script or licence file was touched.

Deleted: crates/pf-ffvk, video_vulkan.rs, video_vaapi.rs, video_libav.rs, the
libavcodec half of video_d3d11.rs, the av_log machinery, ffmpeg::codec::Id as
the decoder's vocabulary (the quic CODEC_* wire constants now serve, which is
why the evidence table was keyed on them), DecodedImage::VkFrame and ::Dmabuf,
the presenter's AVVkFrame lane, and the ffmpeg-fallback feature with
everything behind it. DrmFrameGuard collapses from an enum to a newtype, which
removes an unsafe impl Send. Roughly 25,000 lines.

Then the CI, packaging, licensing and docs work the plan's §6 lists: the
Windows workflows lose FFMPEG_DIR, PF_FFVK_VULKAN_INCLUDE and their PATH
prepend; the MSIX loses its DLL wildcard; the client .deb stops emitting libav
sonames on its own because depends come from dpkg-shlibdeps; arch, flatpak and
nix drop the dependency; and the README's "FFmpeg 7 or 8" contract narrows to
the host.

Three defects reached users' machines in the first cut, and none was in the
deletion itself.

All three desktop Settings UIs offer vulkan, vaapi and d3d11va as stored
decoder values, so those strings sit in shipped settings files today. Refusing
them by name — which is the correct rule for a stale pin — would have bricked
every upgraded client whose owner ever touched that dropdown. They now migrate
onto the native rung for the same hardware family, at decoder construction AND
at each dialog's lookup, because a legacy value that matches no preset
displays as "Automatic" and silently rewrites the user's preference on the
next save.

M9's evidence filter was deleted on the argument that with no libavcodec twin
below, barring an unproven rung removes hardware decode rather than moving
down one rung. That is true on Windows and false on Linux for Intel and every
unknown vendor id, where prefer_vulkan_first is false and the order is
native-vaapi → native-vk: a rung that has decoded nothing anywhere sitting
above one that is 250/250 on three drivers. Every Intel Linux desktop would
have moved from libavcodec VAAPI, shipping for years, onto pf-vaadec by
default — and a rung that constructs and then produces wrong pixels leaves
only by the error-streak demotion, which this codebase already documents as
not tripping on the B580's strobing. The filter is restored as a narrow, pure,
testable rule: an unproven rung yields to a proven one, and to nothing else.
Windows deliberately passes no rung below, because that vendor family is the
one with a measured wrong-pixel report against Vulkan decode, and trading no
evidence for evidence of corruption is the wrong direction.

And the notices still said FFmpeg was bundled. The root file is what both
desktop clients include_str! and what the MSIX ships, three lines under the
new card saying no FFmpeg is bundled; Apple's Acknowledgements said it too, on
iOS, tvOS and macOS. The generator now emits four per-client files scoped by
transitive closure — 0 FFmpeg mentions in each, verified — while the root file
keeps it for the host. That also ends the standing false attribution of
ffmpeg-next, GTK4, windows-rs and the NVENC SDK to an iPhone.

Windows has no reachable box, so it was compiled instead: a cross clippy at
-D warnings on x86_64 and aarch64-pc-windows-msvc with the C toolchain stubbed
so build scripts run without linking. That gate immediately caught an
include_str! path one directory too deep, which nothing else could have.

Gates: container clippy -D warnings, 160 tests, workspace check, both Windows
targets clean, client ffmpeg count 0 and host 2. The four decode crates are
untouched, so the hardware rungs' 250/250 stands.

⚠ Owed and unrun: no GPU has executed any of this milestone. M8's on-glass
software check, M7's D3D11 and VAAPI AV1 hardware legs, and M9's field bake
all still want hardware, and the bake window and criteria remain the user's.
2026-08-07 08:58:47 +02:00
enricobuehler 38554c1c6e feat(client): M9's code half — native first, FFmpeg behind an off-by-default feature
`ffmpeg-fallback` on pf-client-core, default off on the crate. With it off the
libavcodec rungs are not compiled, pf-ffvk leaves the dependency graph, and no
ladder or demotion arm names them; with it on each sits exactly where it sits
today, directly below its native twin. That is the switch which makes M10 a
deletion rather than a redesign.

The bake window and the regression criteria are the user's, per the plan, and
nothing here claims the M9 gate is met.

The hard part was not the feature, it was honesty. Two of the four native
rungs have never decoded a frame on any hardware — native VAAPI at all, and
native D3D11VA's AV1 leg — and making those the default would assert evidence
that does not exist. So admission is per rung and per codec: a pair with
hardware evidence joins `auto` always; a pair without it joins only when
nothing proven is left below it (a build with no FFmpeg twin, where the
alternative is not a proven rung but the CPU) or when the user asks with
PUNKTFUNK_NATIVE_FIRST=1. Pins bypass it, so a lab run can still reach any
rung.

The shipping default therefore changes in exactly three ways, all
evidence-backed: AV1 `auto` takes native Vulkan (250/250 bit-identical on an
RTX 5070 Ti), Windows H.264/H.265 `auto` takes native D3D11VA above its FFmpeg
twin (parity on two GPUs plus a 30-minute soak), and a failing Vulkan rung on
Windows demotes to native D3D11VA first. Everything unproven is byte-for-byte
as it was.

The evidence state is written where it cannot rot: a table in video.rs's
module docs, the same facts in code as `native_evidence()`, a test asserting
them in both feature states, and a per-session log line carrying the rung, the
codec, whether hardware has verified that pair and the evidence string — at
WARN when it has not. A support engineer reading a log can now tell proven
from assumed without asking anyone.

Termination needed a new guarantee. With the FFmpeg twins gone, two native
rungs in opposite per-vendor orders could hand a session back and forth
forever, so a rung once entered is never re-entered and the walk is monotone
to software. The never-delivered fall-through still works: with the feature on
it is unchanged, and with it off it is redundant, because the next candidate
already IS the rung below.

⚠ ffmpeg-next remains a hard dependency of pf-client-core, deliberately. What
is left off-feature is three type-level residues — the codec-id vocabulary,
the AVVkFrame guard that is pf-presenter's public import, and a pixel-format
in one signature — every one of them an M10 §6 line item. Deleting them here
would mean deleting the presenter's FFmpeg lane, 55 call sites, in a milestone
whose gates cannot run a GPU. No libavcodec decoder is opened in a default
build.

⚠ video_d3d11.rs was gated item by item rather than wholesale, and nothing in
this tree compiles it — it needs a Windows check before anyone trusts it.

Gates: both feature states, container clippy -D warnings and 158/159 tests,
workspace check. The four decode crates are untouched, so the hardware rungs'
250/250 stands.
2026-08-07 07:00:29 +02:00
enricobuehler d5e23146c0 feat(client): M8 — the software rung is openh264 and rav1d, and swscale is gone
The ladder's last rung no longer runs FFmpeg. H.264 decodes through openh264,
AV1 through rav1d, and HEVC is refused outright: no permissively licensed
software HEVC decoder exists, so an HEVC session that exhausts its hardware
rungs now tears down and re-dials advertising HEVC-less caps, and the host
picks H.264. The plan calls that a first-class path; it is one.

swscale is deleted, and with it the BT.601 default that its correction code
existed to undo. Colour on the H.264 lane now comes from the same
pf-bitstream planner every hardware rung submits from — openh264 reports no
VUI at all — and AV1's comes per-picture from the sequence header. One colour
source, one CSC: the old default is unrepresentable rather than merely fixed.
Frames reach the presenter as three tightly-packed planes through the planar
CSC pass, which had to be un-gated from the pyrowave feature and its device
probe, since the last rung must exist on devices that failed that probe.

rav1d rather than the dav1d crate, deliberately and against the plan's
literal wording: dav1d-sys is system-deps-only, so it would add a system
library and a .pc file to every client package — in the milestone family
whose excision checklist exists to delete exactly that. rav1d is the same
decoder, same licence, statically linked. The cost is honest: no-asm builds
on both decoders, and software throughput is still unmeasured.

The colour test is the milestone's exit criterion, so it is built to fail.
Three fixtures, and a mutation check: hardcoding the swscale default turns the
red bar to [255,24,0], and swapping Cb/Cr turns red to blue — a silent error
no metadata assertion could catch. Review then disproved the range half of it
numerically: with eight saturated bars, decoding the full-range fixture with
the wrong range gives max error ZERO, because a mismatch only pushes values
outside [0,1] where the shader clamps. A mid-tone was added; the wrong range
now costs 11, well past the tolerance. The exit criterion I set was
satisfiable by a test that proved nothing.

Two blocking defects, both emergent rather than local.

Software AV1 on a 10-bit stream never reached its typed refusal: rav1d is
built 8-bit-only and returns ENOPROTOOPT, which the send loop turned into a
generic error, so the pump's typed downcast missed and every AU failed
identically — a permanent freeze on precisely the shipping case, since AV1 is
advertised only where hardware AV1 exists and hardware AV1 plus HDR is Main
10. The shape is now read from the sequence header before any byte reaches
the decoder, exactly as the H.264 leg reads the active SPS.

And the new Reconnecting phase was the first state that is not streaming, not
connecting, and still holding a live stream — which opened all three guards
that had made a second launch impossible. Pressing A assigned over `stream`
where every other site shuts down first, and StreamState has no Drop, so the
old pump was detached: a second live session still submitting to a Vulkan
device that gets destroyed underneath it. Nothing about the reconnect was
wrong in isolation; the defect lived between a new state and three guards
nobody re-examined. Start is now defensive and the retry raises the
connecting modal, so the UI matches the state and B can cancel.

Also closed: retry_caps was computed, tested and never applied, so a shape
refusal could end a session reporting no codec available while a working
retry existed; the retry inherited force_software sticky-true, landing an
HEVC→H.264 fallback on software H.264 with working hardware H.264; it
re-dialled with a stale mode; the CPU present arm had no survivable-failure
handling where the pyrowave arm — same pass — has it; HEVC is no longer
advertised when the decoder is pinned to software; and the software rung now
feeds the recovery-point SEI it already had in hand to the re-anchor gate.

⚠ Two host-side gaps found while tracing, neither in scope here: Hello::launch
is NOT idempotent (gog:/custom: targets spawn a second copy on a retry; the
field is kept verbatim because dropping it orphans the gamescope display whose
reuse key includes the command), and a reconnected session can never adopt a
game predating its own launch stamp, so it has no game-exit detection.

⚠ OWED: the on-glass software run. ~200 lines of new Vulkan on a path that
only runs because the GPU already failed, and no driver has seen it. The
review's minimum check is sync validation enabled, a non-multiple-of-16 mode,
a mid-session resize and demotion, and both colour matrices.

Gates: container clippy -D warnings over four crates, 236 tests, workspace
check. pf-vkdecode and pf-bitstream are byte-for-byte untouched, so the
hardware rungs' 250/250 stands.
2026-08-07 06:18:23 +02:00
enricobuehler a20cd44ed4 feat(client): native VAAPI AV1 — the third rung, and two failure-path defects
The libva AV1 layouts, the AuPlan conversion and the Linux rung's AV1 arm,
completing AV1 across all three hardware backends. Pin-only.

Layouts measured, not transcribed: the committed probe grew the AV1
structures and every size and offset it printed against libva 2.23.0 is a
compile-time assertion. Three that a hand-count gets wrong — the picture
buffer is align 8 because anchor_frames_list is a pointer, inserting seven
bytes of padding; seg_info and film_grain_info carry their own padding tails
inside the parent; and THREE of AV1's six bit-field unions are narrower than
a word (one uint8_t, two uint16_t), so a u32 packer over any of them writes
through its neighbour.

This is the fifth way this program has had to spell "which pictures does this
frame use", and it is unlike the other four: ref_frame_map is indexed by SLOT
and holds actual VASurfaceIDs rather than indices into anything, ref_frame_idx
is indexed by NAME and holds slots taken from the header — not from the
plan's refs, where a lost reference leaves a hole and a hole is not a slot —
global motion is picture-level, and there is no per-reference size field at
all. Established from va_dec_av1.h and libavcodec's vaapi_av1.c, and stated
in the module docs so the next reader does not re-derive it.

Review verified the whole happy path — every layout assertion re-measured,
every packer width and bit position, the reference convention, the
num_elements buffer shape — and found both defects on FAILURE paths, neither
reachable on the vendored vector.

A conversion refusal permanently desynced the ledger. The mutation block sat
after the tile walk, so any tile-shape refusal left the planner holding a
picture with no ledger slot — and the resulting UnresolvedReference fires
before that block too, so it never repaired. Every later access unit
hard-errored until a shown key frame: one lost packet costing a GOP. The
arm's own doc already warned that skipping conversion would desynchronise the
slot map; the refusal door did exactly what the skip door was written to
avoid. The block is hoisted, and a tile-shape refusal on an already-damaged
plan is now concealed rather than refused.

Fixing that exposed a sharper edge: the conversion can release a slot and
reassign it to the refused picture in one call, so the binding would still
hold the PREVIOUS picture's surface — a wrong reference rather than a missing
one, which nothing downstream could notice. The caller now clears the binding
unconditionally on the refusal path.

And a damaged frame's surface was never written yet was bound as a reference
and left in pending, so a later clean show_existing_frame would claim it with
damaged = false and ship uninitialised GPU memory to the presenter — on
several drivers another client's framebuffer. The justification quoted half
of va_dec_av1.h; its next sentence gives the remedy, which is to point the
problematic index at an alternative buffer. Damaged frames now submit as they
do on the other two arms, with live surfaces substituted for invalid entries
and reported as a bitmask — preferring a reference that really decoded over
the decode target, and keeping libavcodec's deliberate all-invalid map on a
shown key frame.

Film grain is refused rather than decoded wrong: libva wants two surfaces,
one ungrained for prediction and one grained for output, and libavcodec
allocates a second frame for exactly that. The gate now sits after the
mutation block so a grained frame costs itself rather than the GOP, and stays
per-AU rather than per-sequence because a stream that merely DECLARES the tool
decodes here perfectly.

⚠ Residual, flagged not fixed: a picture decoded from substituted references
can still be shown by a later show_existing_frame. It is decoded memory now
rather than uninitialised, and it is what the H.264/H.265 arms do, but
tracking "this was concealed" through to display needs new session state.

Gates: macOS fmt/clippy/125 tests/cargo-doc, container clippy -D warnings over
seven crates and 548 tests, workspace check. pf-bitstream's diff is
comment-only — verified — so the Vulkan rung's 250/250 stands untouched.

Nothing here has decoded a frame: no VAAPI hardware is reachable.
2026-08-07 04:22:23 +02:00
enricobuehler ef40890c80 feat(client): native D3D11VA AV1 — wired, and four defects it exposed
The AV1 arm of the native D3D11VA rung, parity-required because today's
FFmpeg d3d11va rung already decodes AV1 Profile 0 and the excision must not
silently drop it. Pin-only, as that rung is today.

decode() walks the temporal unit frame by frame; submit() splits into
decode_into and present, because AV1 decodes frames that are never shown. The
proven H.264/H.265 body is byte-for-byte unchanged — review diffed it against
HEAD mechanically and found only a rename plus one refusal arm — and the
VideoProcessorBlt hand-off is untouched. That mattered more than anything
else here: those two codecs are hardware-proven, .173 is powered off, and no
gate that runs could have caught a regression in them.

Every descriptor value comes from libavcodec's dxva2_av1.c read verbatim, not
from symmetry with the other codecs: three buffers and no qmatrix (AV1
transmits none), NumMBsInBuffer zero on all three, ConfigBitstreamRaw 1,
surface alignment 128, pool +8, and the session sized from the SEQUENCE
header's max frame size — sizing from the frame would rebuild the decoder and
drop every reference the first time a stream legally resized downward.

Two places where following the H.264/HEVC pattern would have been wrong.
libav pads the bitstream buffer and grows only its descriptor's DataSize,
never a tile's, because a tile's size is exact — charging padding to the last
record is corruption, not filler. And the committed tile records were one per
tile GROUP spanning the whole OBU, header and frame header included, where
libav emits one per TILE addressing the payload past its tile_size_minus_1;
the vendored vector is single-tile, so the old tests passed either way.

Review then found four more defects in the already-committed conversion, each
confirmed against libavcodec AND Chromium's D3D11 AV1 accelerator:

Tile widths and heights were the coded minus-1 where the field is a
superblock COUNT — every tile declared one superblock short, on every frame,
with a comment asserting the opposite of the truth.

StatusReportFeedbackNumber must be zero for AV1. Both reference
implementations disable it specifically for this codec — libav's note reads
"breaks decoding on some drivers (tested on NVIDIA 457.09)", Chromium's "it
crashes :|" — while both set it for H.264 and HEVC, which is why this rung's
proven codecs never showed it. It would likely have presented as a hang or a
rejected submission rather than bad pixels, sending the next session after
the tile records instead.

frame_refs[].Index is an index INTO RefFrameMapTextureIndex, not a surface
index; the neighbouring line already filled that map correctly. Measured:
1636 reference entries on the vendored vector where the two differ.

qm_y/u/v need the 0xFF "no matrix" sentinel — 0 is a valid matrix index, and
274 of 274 frames transmit no quantiser matrix, so every one was being
dequantized against matrix 0.

Also closed: the slot leak the Vulkan rung had already found and documented
(a frame refreshing no slot is never reported removed, so nine of them
exhaust the ledger); a tile-grid check that could not fire, replaced with
libav's own cols*rows guard; per-reference sizes now taken from the
reference's own header via RefState rather than the current frame's; and the
render size clamped against the decoded picture in both rungs, since AV1
permits a render size larger than the frame.

The parity leg was rewired through the real decode path — it previously
called the internals directly, so its hidden-frame assertion described the
harness's own counter rather than production withholding anything.

Gates: macOS fmt/clippy/383 tests, container clippy -D warnings over four
crates and 499 tests, and on Windows .133 (.173 is powered off) clean checks
plus 97 pf-dxvadec tests. All 8 Vulkan gpu_parity legs re-verified bit-exact
on the RTX 5070 Ti after the shared-code change.

No AV1 frame has been decoded through this rung anywhere: it needs .173 back.
2026-08-07 03:01:49 +02:00
enricobuehler a404830456 feat(client): wire AV1 into the native Vulkan rung, pin-only
The third codec arm in video_vk_native, AV1 admitted to native_codec and to
native_vulkan_gate by pin only. It stays out of `auto` on the same rule M5's
D3D11VA rung follows: `auto` admission is earned with hardware evidence, and
this has decoded nothing on a device.

is_integrity_warning_av1 did not exist, so the client could not have
concealed AV1 damage at all. Added, exhaustive, no wildcard: all three AV1
warnings really are damage, because AV1 has no spec-legal-but-noisy signal
to mis-classify — no reorder envelope to announce, no MMCO to rebase — and
the exhaustive match is what stops a future variant defaulting to clean.

The blocking defect review found was two safety mechanisms cancelling each
other. After a failure the decoder skipped to the next key frame answering
Ok(None), and because AV1's planner has no flush its store kept planning
cleanly, so those AUs carried no warnings and the client read them as proof
the rung works — clearing the demotion streak and resetting its clock on
every one. The streak could then never reach the threshold, which made the
never-delivered fall-through to FFmpeg-Vulkan unreachable, which is the
documented backstop for exactly three things: a level above maxLevelIdc, a
sequence header disagreeing with the Welcome, and film grain. Film grain is
the probe's own admitted assumption, so a grain stream would have frozen the
screen for the session while DecodeHealth reported run 0 — recovered.

AV1 now answers the wait with an error, as H.264 and H.265 already do
through AwaitingIdr, so all three codecs are indistinguishable to the
demotion machinery. That matters more than the extra precision of a third
state: only the H.26x paths have hardware evidence, and they are proven WITH
that behaviour.

The obvious form of that fix would have wedged the decoder. A key frame can
sit behind a skipped frame inside the same temporal unit — the vendored
vector has 24 two-frame units — so erroring out of the per-plan loop would
never reach it and the wait would never end. Skips are therefore counted per
frame and the error raised only when the whole unit was skipped, with the
metadata-only unit staying a clean Ok(None).

Also closed: a refused temporal unit left an already-decoded frame in the
ready queue, which shipped on the next AU as a clean success — putting a
picture from a refused AU on screen, clearing the streak again, and latching
delivered so the fall-through was disabled for good. The error arm now
drains and releases unshown.

MAX_DELIVERABLE is derived rather than picked: HOLD_HEADROOM minus the
pipeline's own hold, pinned to pf-vkdecode's constant so a hardcoded depth
fails the build. At the previous 8 the queue plus the presenter's 4-7 stood
against a headroom of 8, so it capped memory without preventing the
exhaustion it named, and a frame waiting 8 AUs burned 16 of the 17 query
slots — where a re-armed slot reads as Failed and becomes a fabricated
driver-corruption verdict in the very counter the Ally X signal lives in.
The trim now runs after this AU's frame is taken, or at the derived depth it
would drop a two-output unit's first frame and invert display order inside
one AU.

Its justification was also wrong: the claim that a temporal unit may carry a
show_existing_frame alongside a shown frame is disproved by this repo's own
golden — 250 units, 250 shown, zero show_existing. The bound is kept as
defence in depth against a non-conformant or multi-operating-point stream,
and now says so.

Gates: macOS fmt/clippy/392 tests, container clippy -D warnings over six
crates, 851 tests, workspace check. No hardware: the rung is pin-only and
has still never decoded a frame on a device.
2026-08-06 22:19:22 +02:00
enricobuehler eecd04247f feat(client): AV1 is advertised on hardware, not on a decoder existing
The standing open item M7 was meant to close. `decodable_codecs` answered the
AV1 bit from `ffmpeg::decoder::find(AV1)`, which says yes on every build that
links libdav1d — a software decoder. So the client told the host "send me
AV1" on machines that would then decode a 4K stream on the CPU, and codec
negotiation happens once at Welcome, so there is nothing to fall back to
afterwards. A promise the client cannot keep is worse than not making it.

`av1_hardware_decodable` answers from device facts only: the presenter's
Vulkan device listing DECODE_AV1 among its decode queue family's codec
operations, or — on Windows — the D3D11 import path, which is the same gate
the D3D11VA rung sits behind and that rung decodes AV1 Profile 0 today.

VAAPI is deliberately not consulted: asking libva costs opening a display,
and this is called too early and too often for that. The Vulkan bit covers
the Mesa devices where VAAPI AV1 exists in practice, and a machine with
VAAPI AV1 but no Vulkan AV1 loses the advertisement, not a working path.

The test pins what the gate must not accept: a device that decodes H.264 and
H.265 but lists no AV1 operation, and a device whose caps word claims AV1
while it has no decode queue at all.

Gates: macOS fmt/clippy, container clippy -D warnings over six crates, 805
tests, workspace check.
2026-08-06 19:27:24 +02:00
enricobuehler a6e51215fd feat(client): M6's rung is wired — libva, dlopen'd, no libavcodec
The native VAAPI decoder now runs end to end: pf-vaadec's plans go into
libva's buffers, the surface comes back as DRM-PRIME dmabufs, and the
presenter imports them exactly as it does the FFmpeg rung's. Pin-only —
`PUNKTFUNK_DECODER=native-vaapi` — for the reason M5's D3D11VA rung was:
`auto` admission is earned with hardware parity and a soak, and this rung
has decoded nothing yet.

libva is dlopen'd rather than linked, so the pf-lxcheck2 container compiles
and clippies the whole thing without libva-dev, and a machine without a
VAAPI runtime gets a clean refusal instead of a packaging dependency.

The surface pool is not the slot map. `SlotMap::assign` hands out the lowest
free slot, and a slot freed by an access unit's own removals is free by the
time that unit's picture takes it — measured at 225 of the vendored vector's
250 access units. A surface bound by slot index would therefore decode, on
nine frames in ten, into the surface still holding the picture on screen. So
`plan_to_va` now takes the decode target as a parameter, bound by the caller
at activation time the way pf-vkdecode binds a pool image, and a surface is
free only when no live picture is bound to it, no output is owed for it, and
no consumer holds it.

Measured rather than transcribed, as everywhere else here: layout-probe.c
grew the export descriptor (312 bytes, objects[4]/layers[4]), the buffer-type
enumerators — VASliceParameterBufferType is 4 and VASliceDataBufferType is 5,
not the 3 and 4 that counting off the header suggests — and the config,
attribute and generic-value layouts. All pinned as compile-time assertions,
which is how the 12-byte VAGenericValue in the first draft was caught: the C
union holds a pointer, so it is 8-aligned and 16 bytes.

The plane walk lives in pf-vaadec, pure and unit-tested on macOS, because it
is the one structure the DRIVER writes and we read: SEPARATE_LAYERS returns
NV12 as two layers, and taking layers[0] is the green screen this project has
already paid for. It also refuses what it cannot express rather than guessing
— a bogus object count, a plane naming an object that is not there, objects
disagreeing on tiling.

Own DecodedImage variant, same payload type. The physical hand-off is
identical to the FFmpeg rung's, so the presenter keeps ONE arm and one
demotion streak; the variant exists so the compiler asks which rung decoded
wherever that matters. Both D3D11VA rungs share a variant and `1573a987` had
to fix the consequence afterwards — a "native" soak that could silently have
been an FFmpeg soak. Here the four uncovered matches were compile errors.

Buffers are destroyed by us, not by vaEndPicture: va.h is explicit that the
user must call vaDestroyBuffer, and the libva 0.x behaviour is long gone.
Leaking two per picture at 60 fps exhausts the driver's store in minutes.

pf-vaadec's presenter headroom was 4, written against no consumer. The Vulkan
rung had already measured the client pipeline at four to seven held frames;
it is 8 now, pinned to that crate's constant so a re-measurement moves both.

Gates: macOS fmt/clippy/341 tests/cargo doc, and in the container clippy
-D warnings over six crates, 795 tests, workspace check.

Hardware legs are still owed — no AMD/Mesa or Intel box was reachable.
2026-08-06 16:56:38 +02:00
enricobuehler 00d4026054 Merge pull request 'Worktree field kleisty triage' (#69) from worktree-field-kleisty-triage into main
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Reviewed-on: #69
2026-08-06 12:41:28 +00:00
enricobuehler 81b4f76c4d fix(client): a session ending on purpose stops reading as a failure
The desktop clients turned every host-side close into "Host ended the
session", and a reason string means "abnormal" to everything downstream:
the GTK and Windows shells raised a banner, the console overlay drew a
status strip. Quitting a game you launched yourself produced all of
that. Now only a host error or a lost connection carries a message; the
deliberate endings return the silence those shells already give a clean
exit, which is also what puts the console back in its library with
nothing in the way.

The Apple client gains the same distinction. It had one line for every
ending — "Session ended by <host>." — which is fine for an operator
stopping the session and wrong for a link that died, so each now says
what happened. A game exiting stays silent and returns to the library it
was launched from.

Both read the reason while the connection is still up, because tearing
it down is what makes it unreadable, and both fall back to their previous
wording when there is no verdict — an older core, or a close that raced
the read — rather than inventing a new one for a case they cannot see.
2026-08-06 14:30:46 +02:00
enricobuehler 509843f0d4 test(client): the D3D11VA rung's ten-bit path, measured too
The companion to the Vulkan ten-bit leg, over the same vector and the same
P010 goldens — one golden file serves both rungs because a D3D11 P010 surface
and Vulkan's 3PACK16 family hold the ten bits in the same place.

This is the rung where the gap mattered most. D3D11VA exposes no per-picture
status query at all, so its HDR evidence was a session that built a Main10
decoder and streamed without complaint — which is precisely what a Main10
stream decoding to garbage would also produce. Now there is a number.

It exercises geometry the eight-bit legs cannot reach: P010 samples are two
bytes, so a row is width * 2 rather than width, and HEVC's 128-line granule
pads a 240-line picture to a 256-line surface — so the chroma plane starts a
long way from where the display height alone would put it. Getting either
wrong is the smeared-rows failure this project has already paid for once, and
it would have looked like a decoder fault.

The run body now takes the stream format and the expected access-unit count
rather than assuming the eight-bit envelope and 250 frames.

A CPU guard pins the vector at ten bits — 4:2:0, both depths minus8 == 2,
320x240, 50 access units. A regenerated eight-bit vector would otherwise turn
this into a second run of the eight-bit path under a ten-bit name, passing,
because its goldens would have been regenerated with it.

Hardware: HEVC Main 10 50/50 bit-identical on the RTX 4090 and on the AMD
Radeon iGPU, alongside the unchanged eight-bit legs at 250/250 on both. With
the Vulkan leg's two drivers that is four independent drivers across two
rungs for the ten-bit path, where yesterday there were none.
2026-08-06 13:53:23 +02:00
enricobuehler fbdad8d917 Merge pull request 'fix(clients): host discovery heals itself, and every client can rescan' (#67) from worktree-host-discovery-refresh into main
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Reviewed-on: #67
2026-08-06 11:51:30 +00:00
enricobuehler b25e6eda91 fix(clients): host discovery heals itself, and every client can rescan
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A field report from an iPad: the host is not found on first run, and
restarting the client finds it. Pull-to-refresh appeared to do nothing.

Both were real. The Apple client's discovery had three ways to go
permanently deaf, each needing an app relaunch to clear:

- A failed resolve was never retried. `browseResultsChangedHandler`
  only fires when the result SET changes, and a host whose resolve
  failed is still in the set — so nothing ever re-offered it.
- A stuck resolve never ended. `NWConnection` has no timeout, so the
  throwaway UDP flow used to resolve an address could sit in
  `.preparing`/`.waiting` forever, and a service with a connection in
  flight was skipped.
- `NWBrowser` parking in `.waiting` was ignored (only `.failed`
  re-armed). On iOS that is where the local-network privacy prompt
  lands on first launch after install: the browse starts, the system
  asks, and the browser waits. Granting does not revive that browser —
  only a new one sees the grant. That is the reported first-run bug.

HostDiscovery now runs a 1 Hz sweep that times out stuck resolves,
retries failed ones on a 1→30 s backoff, and re-arms a browser that
stopped working; the advert's TXT is re-read on every browse report, so
a host that re-keys or flips its pairing policy is followed. Returning
to the foreground re-arms the browse (iOS/tvOS: `onAppear` does not
fire across background/foreground, and a suspended browse stays dead).

Pull-to-refresh did nothing because there was no `.refreshable` in the
client at all. Added, plus the explicit control the report asked for:
a toolbar Refresh on iOS/macOS, an action-row button on tvOS, a Rescan
tile in the gamepad launcher, Scan Again on the empty state, a
header-bar button in the GTK client, a hosts-page button on Windows,
and Scan again on Android. Decky already had one.

The desktop/Android browses needed a rescan trigger to make those
buttons mean anything: mdns-sd re-queries on a doubling backoff capped
at ONE HOUR, so a long-lived browse is effectively passive and a host
that appears later can stay invisible. `discovery::Rescan` forces a
fresh query; the wake-and-wait loops use it too, so a host that just
booted is noticed in seconds rather than at the next backoff tick.

Also fixed, found on the way: clients/windows/src/discovery.rs is a
second copy of the browse that d0fa8bd3 ("pin mDNS discovery to IPv4 on
every client") missed. It took an arbitrary first address, so when a
host's OS responder answered AAAA the Windows GUI rendered a card that
failed on every click. It also never noticed a dropped receiver, leaking
a thread and a :5353 socket per wake-and-wait.

Gates: Apple macOS + iOS (arm64-apple-ios17.0, proven non-vacuous) build
clean, 195 tests pass incl. a new one asserting a rescan re-finds a
still-advertising host. On .21: fmt, clippy --all-targets -D warnings
and build clean for pf-client-core + client-linux + client-session,
117 tests pass. Android :kit: and :app: compileDebugKotlin clean.
The Windows client is UNGATED — its CI runner was unreachable.
2026-08-06 13:30:10 +02:00
enricobuehler 5a7f7f0fc5 feat(clients/gamepad-ui): section tabs, background palettes, and a backdrop that moves everywhere
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The console settings were one 30-row scroll, which on a Deck meant thumbing past
Video and Audio to reach the pad settings. They are now split across sections —
Stream · Video · Audio · Controller · Interface · Profiles, plus Input on the
desktop console, which alone carries the touch/mouse rows. L1/R1 walks them,
each section remembers where its cursor was, and the names are the same word on
every client so a setting is where you looked for it last.

Shoulders are not the only route, because a D-pad remote hasn't got any: on
Android, Up from the first row moves onto the strip (left/right walks sections
there, A drops back in), and on tvOS the pills are focusable, so the focus
engine handles it — a Siri Remote has no extended gamepad profile and never
reaches the input poll at all. The desktop console needs neither; PageUp and
PageDown already map to the same events.

New "Background" row, six palettes: Violet (the brand default), Tide, Forest,
Ember, Rose, Graphite. A palette is a hue rotation plus a saturation scale over
the ONE colour field each client already draws, so every palette inherits its
structure and Violet is the identity transform — existing installs see exactly
what they see today. The maths is ported three times (Rust/Swift/Kotlin) under
one shared `ui_palette` key, with the same assertions pinned in each language.
It is presentation only, so it is a device preference and never part of a
profile.

The form screens no longer have a backdrop of their own. Settings, add-host and
pair used to sit on a still gradient; they now wear the same living field at a
calm mix — pools dimmed onto the palette's own corner colour, vignette halved so
rows that run to the edges don't get crushed. On the desktop console that
collapsed the old aurora-over-static crossfade into one shader pass with a
chased uniform. Motion speed is identical in both modes on purpose: changing it
would make the field jump mid-transition. Nothing in the gamepad UI is backed by
a static image now, and Reduce Motion (Apple) / "remove animations" (Android)
still freeze it.

Also: the settings screen had no raster coverage at all — the eyeball dump is
`#[ignore]`d — so a new test draws every tab, and the Android screenshot set
gains a console-settings scene. Both earned their keep immediately: the renders
showed the extra hint pushing "Done" off a 360 dp phone (the legend scrolls now,
and the Section cell only appears where shoulders exist) and the form backdrop
crushing its own edges.
2026-08-06 12:39:30 +02:00
enricobuehler 1573a9876b fix(client): a d3d11va soak could not tell which rung it soaked
The `stats:` line's decode-path tag is derived from the DecodedImage variant,
and both D3D11VA rungs deliver DecodedImage::D3d11 — they share the hand-off
ring on purpose. So a native-d3d11va session and an FFmpeg-d3d11va session
emitted a byte-identical tag, and nothing downstream could tell them apart.
The native Vulkan rung never had this: it carries its own variant, hence its
own `native-vulkan` tag.

That is not cosmetic, and it was found the only way it could be — by running
the rung on glass and having to grep the log to prove which one had answered.
A native pin that fails to initialise falls through to the FFmpeg rung by
design; the line it then emits is exactly the line the native rung would have
emitted. M5's owed soak and M9's vendor-matrix bake both rest on attributing
a session to a rung, and until now the machine-readable half of that evidence
could not do it. This project has already shipped one measurement that could
not tell "clean" from "unmeasured"; this is the same shape.

D3d11Frame now records which rung wrote the surface, keyed off the pin
constant itself rather than a second field the two rungs could set
inconsistently — the native rung passes DECODER_PIN into the hand-off and
nothing else does.

The stats line stays additive for every shipping session: the only value that
changes belongs to a rung that is pin-only and deliberately absent from the
automatic ladder, and the Windows shell passes the line through opaquely
rather than matching on the tag.

Verified on glass on .173, both directions: pinned native-d3d11va gives 85
windows tagged `native-d3d11va` and 0 plain, pinned d3d11va gives 64 plain and
0 native, zero errors either way. Gates: clippy -D warnings on Windows, the
Linux container's clippy/tests/workspace check, rustfmt.
2026-08-06 12:34:31 +02:00
enricobuehler 3041d9bb43 test(client): M5's decoded pixels now answer to libavcodec's
The native D3D11VA rung had no pixel evidence at all. Its DXVA bytes were
checked against libavcodec's own captured bytes, and its Intel bring-up proved
the driver accepts the submission — but nothing had ever compared what came
out. This is that comparison, against the same goldens and the same reference
the Vulkan rung was held to: libavcodec's SOFTWARE decode, which is ground
truth rather than a peer implementation, so the two rungs' verdicts are now
directly comparable numbers.

It reads back the DECODE surface, before the VideoProcessorBlt, so what is
hashed is the half this rung is responsible for; the hand-off is the shared,
field-proven half and is deliberately not in the measurement.

Finding, recorded rather than papered over: this rung presents in DECODE
order. It never consults AuPlan::dpb.outputs — submit blits setup_slot and
returns. The native Vulkan rung keeps a display-order queue for exactly that
reason, and libavcodec's D3D11VA rung reorders internally, so this rung
differs from both. It cannot bite on punktfunk streams, which are zero-reorder
and carry no B pictures, but that is a convention of our hosts rather than a
structural guarantee, and a stream that did reorder would present out of order
with nothing to say so.

Both vendored vectors DO reorder — the H.265 one's first B picture at AU 3 is
what localised the RPS slot defect — so a harness hashing in decode order
would report a permutation against display-order goldens and read like a
decoder fault. Instead each decoded surface is hashed against the PicId the
planner gave it and the hashes are emitted in the planner's own output order.
The reordering is the test's, done by the planner the rung already trusts, and
`both_vendored_vectors_really_do_reorder` asserts the reason so the docs
cannot go stale silently.

The crop reads the chroma plane at RowPitch * texture height, not display
height: the decode pool is aligned to the codec's granule and is taller than
the picture. That is the 1088-row smear this project has already paid for.

Two CPU guards run in ordinary CI. This file needs its own Annex-B splitter
(pf-client-core does not depend on the vendored parser), and a splitter that
disagreed with pf-bitstream's would fail on hardware as a frame-count mismatch
that reads like a decoder defect; instead it fails on CPU, saying so.

PF_DXVA_ADAPTER pins a GPU by description substring and every run prints the
adapters it saw — .173 enumerates its AMD iGPU alongside the 4090, and which
one answered is a fact worth printing rather than inferring.

Hardware: H.264 and H.265 both 250/250 bit-identical on NVIDIA GeForce RTX
4090 and on the AMD Radeon iGPU, Windows. Gates: clippy -D warnings and the
lib tests on Windows, the Linux container's clippy/tests/workspace check, and
rustfmt.
2026-08-06 12:17:24 +02:00
enricobuehler 31087697a9 feat(client): M5 — native D3D11VA decode, pin-only pending hardware
The Windows fallback rung, and auto's first choice on Intel, now has a
native implementation driven by pf-bitstream's plans instead of
libavcodec. New crate pf-dxvadec holds everything that can be a pure
function — the DXVA structure layouts, both codec conversions, bitstream
packing, config selection — deliberately CROSS-PLATFORM, because a
cfg(windows) module is verified by a remote cargo check and nothing
else, and this milestone's riskiest code is exactly the part no local
test can see. Only the FFI lives in video_d3d11_native.rs.

windows-rs does not generate dxva.h at the pinned rev, so the DXVA
structures are hand-declared: compile-time assertions on every struct
size AND every field offset, packed bitfield words as plain integers
with named builders and the bit positions written beside the C
declaration, and a const zeroed() per struct so construction needs no
unsafe at all. The crate's only unsafe is a sealed byte view over those
PODs. Review round 13 checked all seven layouts field by field in
declaration order — sizes, widths, array lengths, the PicEntry
index/flag packing, and every named bit's position and width.

The decode pool reproduces libavcodec's rather than inventing one:
ONE texture with ArraySize = pool size, BIND_DECODER and nothing else,
MiscFlags 0, aligned 16 for H.264 and 128 for HEVC. That is deliberate.
This rung's predecessor records that a hand-built pool which validated
on NVIDIA was rejected by Intel at the first SubmitDecoderBuffers — and
Intel is the vendor this rung exists for. The VideoProcessorBlt into
shareable RGBA is untouched: importing a multiplanar NV12 D3D11 texture
into Vulkan device-losts on NVIDIA, so that hand-off is load-bearing
field-proven code. It was extracted into a shared HandoffRing so both
rungs fill one implementation; the review diffed the blit statement by
statement, including the keyed-mutex pairing.

Review round 13's four defects are fixed. The blocking one: the HEVC
quantisation matrix was submitted unconditionally, and the vendored
parser leaves it ALL ZEROS unless the stream codes one — unlike FFmpeg,
which seeds the spec defaults. On a stream saying 'use the default
matrices' the driver is obliged to apply what it is handed, so every
residual would dequantise to zero and the picture would drift to flat
prediction. It is now gated on scaling_list_enabled_flag exactly as
libav gates it, with the Table 7-5/7-6 defaults supplied when enabled
but uncoded.

Second: NumMBsInBuffer was 0 where libav's H.264 path sets
mb_width * mb_height. This module's whole method is verbatim
reproduction on precisely the call that once failed for Intel, so an
omitted descriptor field is the same class of bug as the pool.

Third, and the one to watch on hardware: RefFrameList carried the
frame's reference set rather than the pictures marked used for
reference. Vulkan defines pReferenceSlots as the slots this operation
uses, so a subset is correct there; DXVA defines RefFrameList as a
statement about the DPB. The list DERIVATION survives a subset — which
is exactly why a smoke test would have passed — but a long-term
reference held across frames that none of them name would vanish and
reappear, and a driver keeping per-reference state is entitled to
discard it in between. That is the Ally X symptom shape. pf-bitstream
now exposes a per-AU DPB snapshot for both codecs and the converters
build the array from it, frame references first, marked tail appended.
121 of the 250 vendored AUs carry a marked picture the frame never
names, so this is exercised, not theoretical.

Fourth: the session identity omitted bit depth and chroma, while the
Windows host flips an HDR desktop to PQ in-band with a new SPS — a
depth change at unchanged size would have decoded 10-bit samples into
an NV12 pool. Identity now derives from the SPS per AU and rebuilds.

Wired PIN-ONLY (PUNKTFUNK_DECODER=native-d3d11va), absent from every
auto arm. Nothing has decoded a frame yet, and M2's discipline was that
auto admission comes only after hardware parity. A runtime streak
demotes to the FFmpeg D3D11VA rung first, then software.

Also scaffolded: a byte-diff harness against libavcodec's own DXVA
picture parameters, with the FFmpeg patch and capture recipe in its
docs. Nothing here is checked against libav's actual bytes the way M3
was checked against its pixels, and that is the cheap way to buy the
confidence before hardware.

Gates: fmt clean; container clippy -D warnings zero across
pf-client-core + pf-presenter + pf-vkdecode + pf-dxvadec +
punktfunk-core; tests 73/131/63/129/354 green; cargo check --workspace
clean; Windows cargo check and clippy -D warnings clean on .173.
2026-08-06 06:11:21 +02:00
enricobuehler 2a57ee36f8 feat(client): M4 — the decoder's own verdict reaches the session
This program exists because a field corruption was architecturally
undetectable through FFmpeg: no decode-status read, no corrupt-frame
flag, errors only as scraped log lines, and no recovery-point signal so
intra-refresh healing was invisible. The native decoder has all of those.
M4 is where they stop being internal.

DecodeHealth counts, per session and without allocating per frame, what
the three answers actually are: damaged (the stream arrived incomplete),
refused (the rung would not decode it at all) and driver-failed (the
hardware says it could not decode what arrived), plus the current and
worst concealment run — the figures that separate one bad AU from a
stream that never came back. They ride the stats line additively, so an
FFmpeg session and a healthy native session emit byte-identical output
to today. The status-query capability is reported too: without it a
clean report cannot be told from an unmeasured one, which is the whole
nb_queries=0 lesson.

The headline is local recovery. Until now the pump could only learn that
intra-refresh healing finished from wire flags the host sends; absent
those it froze until the 500 ms backstop forced an IDR. The parsed
recovery-point SEI now feeds the re-anchor gate directly, so a session
lifts on the picture that is actually clean. Wire semantics are
untouched for every client that never calls it.

Detection now asks for recovery instead of erroring — an integrity
warning ticking the error streak would demote the native rung on exactly
the lossy links it exists to diagnose, where an FFmpeg rung conceals
silently and keeps its job.

Review round 12 found that trade had removed the escape hatch entirely.
Concealment returning Ok(None) reset the demotion streak, and worse: the
driver-verdict ledger is only populated when a frame ships, so under
continuous concealment no verdict was ever read and the erroring arm
could not fire at all. A host framing regression of the 0.23.0
slice-wire class — which does not self-heal, and which a keyframe does
not clear — would have frozen indefinitely with no demotion and a clean
integrity line, where before it demoted to FFmpeg-Vulkan and showed a
picture. Now only an answer that proves the rung works clears the
streak: a shipped frame, or a clean no-frame. Concealment neither ticks
nor clears, so a lossy link still cannot demote a healthy rung while a
driver failure interleaved with concealment reaches the threshold again.

Two more honesty defects from the same round. A rung refusing every AU
reported no integrity line at all — the founding failure mode, wearing
the shape of a clean bill of health; refusals are now counted. And
driver-failed could be non-zero on a device that cannot produce driver
verdicts, because a degraded timeline read looked the same as one; the
attribution is now withheld inside the counter rather than at call
sites, so the self-contradictory line is unrepresentable.

Local recovery also no longer trusts any recovery-point SEI: only one
whose target advances past an outstanding wave counts as a new wave, so
an encoder re-announcing the current wave with a decreasing count — legal,
and what x264 intra-refresh does — cannot lift the freeze early onto a
partially stale picture. Frames buffered across an arm are dropped by
decode order for the same reason.

Fault injection is a first-class tool now (PUNKTFUNK_AU_FAULT, inert
unless set, env read once). Its test replays the vendored vectors
through the real planners and asserts a negative the plan assumed away:
truncation and bit flips are PROVABLY invisible to the parser — Annex-B
carries no NALU length, so a cut slice is just a shorter slice and a
flipped payload byte is syntactically perfect. Only dropped AUs are
parser-detectable; the rest need the driver verdict, which is why the
status query matters. The H.265 leg found a second: three of that
vector's faulted AUs are sub-layer non-reference pictures, so dropping
them damages nothing and silence is correct — the test asserts both
verdicts and guards that neither half goes vacuous.

Per-frame decode latency was deliberately NOT built. Polling answers
only 'complete by now', and the pump polls once per AU, so every sample
would quantise up by as much as a frame interval — 8.3 ms at 120 Hz
against decodes of 0.1-2 ms. Sampling faster needs a spin or a second
thread on a decoder that is deliberately not Sync. A blocking per-frame
wait is the field scar that once capped a stream at 51 fps. The honest
sampled stat stands.

Also fixed, pre-existing: the re-anchor gate re-armed on every damaged
AU, so sustained damage permanently zeroed the mark count — meaning the
wire's two-mark rule could never complete on exactly the lossy links it
was written for.

Field note recorded while wiring this: intra_refresh_recovery is set by
exactly one encoder backend (Linux libav-NVENC under
PUNKTFUNK_INTRA_REFRESH). AMF and QSV run a wave with no wire mark, and
AMF emits no recovery-point SEI either, so AMD/Windows intra-refresh
sessions still have no clean recovery point by either route.

Gates: fmt clean; container clippy -D warnings zero across
pf-client-core + pf-presenter + pf-vkdecode + punktfunk-core; tests
69/131/129/354/41 plus 5 fault-detection green; cargo check --workspace
clean.
2026-08-06 04:30:40 +02:00
enricobuehler e4d8573475 feat(client): the native rung now decodes HEVC as well as H.264
The last piece of M3 WP-2 — VkH265Decoder was built and hardware-gated
but nothing drove it. video_vk_native.rs holds a two-arm codec enum and
forwards to it; the ledger, release tokens, status-query settling and
timeline waits are byte-for-byte what they were, since they were always
codec-agnostic over one DecodedVkFrame contract. The forwarders are
written out per arm rather than macro'd so the unchanged H.264 arm is
visible to a reviewer.

The picture's own format now reaches the presenter, which picks bit
depth and MSB packing from it instead of assuming the H.264 envelope.
That incidentally fixes a live bug on the SHIPPING FFmpeg-Vulkan path:
it derived ten-bit-ness by comparing against the 10-bit 4:2:0 format
alone, so a 10-bit two-plane 4:4:4 surface — which its own format table
accepts, and which NVIDIA reports for HEVC RExt — got 8-bit range and
transfer maths. Reachable today with Full chroma plus 10-bit: decoded
correctly, displayed wrong.

Review round 11 caught a regression this WP would otherwise have
shipped. pf-vkdecode refuses a stream whose (chroma, depth) pair has no
picture format on the device, but the session is built lazily from the
first SPS, so the refusal arrived AFTER construction — past the point
where a native init failure falls through to FFmpeg-Vulkan. It burned
the error streak instead and demoted to VAAPI/D3D11VA, which on
NVIDIA/Linux means software. Turning on Full chroma on any non-NVIDIA
GPU was enough: a 4K HEVC session that ran on FFmpeg-Vulkan before this
branch would have landed on software decode.

Both halves are fixed. The negotiated chroma and bit depth — already at
the call site, the PyroWave arm four lines up uses them — are threaded
into the backend, which probes the same caps path ensure_state would
run, so the whole class refuses at CONSTRUCTION where the fall-through
already exists. For the legs no negotiation can carry (a level above
maxLevelIdc, an SPS that disagrees with the Welcome) the decoder latches
'never delivered a frame' and routes that first streak to FFmpeg-Vulkan
rather than down the hardware ladder. H.264 is deliberately not probed:
its envelope is fixed, so a probe would only add a profile guess on the
bit-exact path; it gets the latch as its backstop.

Two more from the round. Planner warnings are typed again rather than
Debug strings — pf-vkdecode simply lacked the h265 re-export its h264
twin already had — which restores the H.264 log rendering exactly and
unblocks M4, whose job is counting concealment by kind. And concealment
is now the integrity set only: NonZeroReorder is documented spec-legal
and fully planned, but the client treated every warning as damage, so
the opening IDR and every ABR renegotiation's IDR were released unshown
and re-anchored — a visible hitch on a healthy stream.

Also: a raw-format newtype so a neighbouring i32 field cannot be passed
to the colour maths, the presenter's depth table now pinned against
pf-vkdecode's actual output vocabulary rather than the FFmpeg lane's,
a per-format warn latch, and four stale docs.

Gates: fmt clean; container clippy -D warnings zero across
pf-client-core + pf-presenter + pf-vkdecode; tests 69/125/108/40 green;
cargo check --workspace clean.
2026-08-06 03:02:09 +02:00
enricobuehler 6d8f3b45b5 feat(pf-vkdecode): the GPU half of HEVC decode — session, pools, recording
M3 WP-2 complete. caps_h265.rs builds the profile the stream actually
needs (profile idc + chroma + bit depths, all three stated on every
Vulkan object) and resolves its picture format — Main to NV12, Main 10
to P010, RExt 4:4:4 to the two-plane 4:4:4 formats — validating it
against the format list of every role the chosen arrangement creates
images in. A Main 10 stream on an 8-bit-only device is refused BEFORE a
session exists, never narrowed: decoding 10-bit into an 8-bit surface is
the silent-wrongness class this crate exists to refuse. session_h265.rs
adds the three-array parameters ledger; decoder_h265.rs adds
VkH265Decoder, mirroring VkH264Decoder method-for-method so the client
wiring is a two-arm dispatch away.

H.264 and H.265 now SHARE the machinery instead of duplicating it:
derive_arrangement (one coincide/distinct/layered decision table),
ring::rebased_offsets (the slices-only rebase — non-VCL NALUs in the
decode range hang VCN firmware), session::bind_session_memory, and a
parameterised build_frame. A DecodeProfile enum replaces the bare
profile idc that images.rs and ring.rs used to take: both codecs' idc
types are c_uint, so handing an H.265 idc to the H.264 path COMPILED
SILENTLY and built a mismatched profile chain. That is now
unrepresentable.

The VPS leg is the ledger's real work. The vendored parser attaches a
VPS to an SPS only when it saw the NALU, and clients join live streams,
so VpsSource is Parsed-or-FromSps and is stored BY VALUE: re-activating
a VPS-less SPS is Current (no churn), but the real VPS arriving under
the same id is a content change and RECREATES onto it, because Vulkan
cannot replace a stored parameter set.

Review round 10 (adversarial) confirmed the hardware-proven H.264 path
is NOT regressed — derive_arrangement's check order and error identity
are byte-for-byte the original, build_frame's call sites still pass the
granularity-aligned extent (the 1088-row scar stays shut), and
rebased_offsets reproduces the deleted inline loop for every input while
moving the sum to u64 so overflow errors instead of wrapping. Also
verified: the refs-order contract on every path, the RESULT_STATUS caps
gate (each of reset/begin/end individually gated, no pool created when
unsupported — recording one on RADV hangs its VCN), pNext lifetimes, and
that no panic is reachable on stream input.

Its 10 findings are fixed. The two that mattered:

- A failed decode stranded a DPB slot. Once plan_to_vk_h265 had mutated
  the slot map, five later failure paths returned without restoring it,
  so planner and slot map both believed a picture was resident while no
  image held it — and every later AU referencing it failed, where H.264
  soft-degrades and keeps delivering. Fail-closed is kept (substituting
  a reference silently is the corruption-hiding this program exists to
  end) but made RECOVERABLE: a latch flushes the planner to AwaitingIdr
  and resets the bindings on the next decode, which composes with the
  client already requesting a keyframe on every decode error. The fix
  deliberately covers pre-mutation failures too — those strand the
  picture the other way round and wedge identically.
- DecodedVkFrame carried no picture format, so a Main 10 frame would
  decode correctly and be rendered with 8-bit transfer/range math. It
  now carries one, stamped from the pool so it is truthful for both
  decoders by construction. The presenter comment says depth 8 is
  because only H.264 is WIRED, not a decoder limit.

Plus: bind_session_memory freed allocations before the session that may
hold them was destroyed (an ordering regression from the extraction,
with a SAFETY comment asserting the opposite) — the bind-stage exit now
hands them back so Drop destroys first; max_level_idc is codec-tagged
rather than an H.264 type carrying H.265 code points; and the decode
family's videoCodecOperations is now checked, turning 'create an H.265
session on a device without the extension' from UB into a clean ladder
demote.

Deferred by design: no HEVC gpu_smoke/gpu_parity yet (its goldens are
already in tests/data/test-25fps-h265.nv12.sha256), and no codec
dispatch in the client — both later legs.

Gates: fmt clean; mac clippy zero warnings, pf-vkdecode 106 +
pf-bitstream 69 green; container clippy -D warnings zero for
pf-client-core + pf-presenter + pf-vkdecode, tests 69/121/106 green.

HARDWARE (.173, after the refactor — review saying the proven path is
safe is not the GPU saying it): gpu_parity '250 frames bit-identical to
libavcodec software decode' on BOTH the NVIDIA 4090 (610.88, coincide
mode) and the AMD iGPU (Adrenalin 25.10.30.02, distinct mode), gpu_smoke
green on both. Two independent drivers, both DPB modes, still bit-exact.
The smoke trace also shows the new videoCodecOperations capture reading
DECODE_H264 | DECODE_H265 | DECODE_AV1 off the real decode family.
2026-08-06 01:59:39 +02:00
enricobuehler 370b0ab494 feat(client): native Vulkan decode joins the automatic ladder, above FFmpeg-Vulkan
Closes M2. The 2026-08-05 ladder decision: WP-D shut with bit-exact
parity vs libavcodec (250/250 AUs on RADV, AMD-proprietary and NVIDIA)
and a 92-minute clean soak, and the program's goal is dropping FFmpeg
from the client — so on H.264 sessions where caps pass, auto now tries
pf-vkdecode FIRST, exactly where the ladder would reach FFmpeg-Vulkan.
No bake period.

native_vulkan_gate widens from by-name-only to the auto family
(auto/""/hardware); the vendor-first rungs are untouched (Linux
Intel/unknown still VAAPI-first, Windows Intel/unknown still
D3D11VA-first — NVIDIA and ALL AMD go native first). A native INIT
failure or caps refusal logs and falls through to FFmpeg-Vulkan, so
admission can't cost a session its decoder at start; runtime error
streaks ride the existing demotion machinery unchanged (past
FFmpeg-Vulkan to VAAPI/D3D11VA/software — a native→FFmpeg-Vulkan
runtime rung is deliberately absent, FFmpeg is on its way out).
PUNKTFUNK_DECODER=native-vulkan stays as the explicit pin; vulkan
keeps naming the FFmpeg backend specifically. A native_tried guard
keeps a failed pin init from re-attempting construction in auto.

Review round 8 (adversarial): no blocking code defect — no demote
bounce-back (Decoder::new is session-start-only; demotion mutates in
place), no double attempt, no cfg imbalance. 5 findings fixed: two doc
overclaims ("nothing regresses" now scoped to init; the ladder
enumerations no longer claim desktop-AMD Linux is VAAPI-first —
prefer_vulkan_first is vendor-wide), stale opt-in claims in Cargo.toml,
stale user-facing ladder text (console-ui row, trust.rs decoder field,
session README incl. the env-knob list), and the gate test now pins the
H264 codec-op bit to the literal 0x1 so a typo'd constant can't make
native silently never engage.

Gates: fmt clean; container clippy -D warnings zero for pf-client-core +
pf-presenter + pf-vkdecode; container tests green (pf-client-core lib +
pf-vkdecode + pf-bitstream); pf-console-ui check clean; mac
pf-vkdecode/pf-bitstream/cros-codecs 167 tests green.

On-glass sanity CLOSED 2026-08-05 ~22:10 UTC on .173 (4090, coincide
mode), decoder=auto and NO env var: the ladder picked native on its
own ("pf-vkdecode auto rung" log line), 525/526 stats windows on
native-vulkan over ~8m46s / 31550 frames, fps 0/59.4/61 with 6
windows <55 incl. startup zeros, bad-signature grep over the whole
log EMPTY, zero TDR events, host service Running after teardown.
2026-08-06 00:12:35 +02:00
enricobuehler de6b9e94ec Merge pull request 'fix(client/windows): settings persist when the app isn't installed on C:' (#62) from worktree-client-msix-persist into main
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ci / rust (push) Failing after 9m30s
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android / android (push) Successful in 13m9s
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deb / build-publish (push) Successful in 14m47s
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windows / build (x86_64-pc-windows-msvc) (push) Successful in 4m12s
Reviewed-on: #62
2026-08-05 20:53:38 +00:00
enricobuehler 5ebe840320 fix(client/windows): settings persist when the app isn't installed on C:
windows / build (x86_64-pc-windows-msvc) (pull_request) Failing after 22s
apple / swift (pull_request) Successful in 1m30s
apple / screenshots (pull_request) Skipped
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ci / web (pull_request) Successful in 1m28s
ci / docs-site (pull_request) Successful in 1m23s
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windows / build (aarch64-pc-windows-msvc) (pull_request) Successful in 6m42s
ci / rust (pull_request) Successful in 7m46s
Reported from the field (2026-08-05): a fresh Windows 11 box with a data
partition, "New apps will save to: D:", and the client installed there. It
launches, finds hosts and streams — but no setting and no profile survives a
restart. Reinstalling to C: fixes it completely. The reporter's read was "it's
in read-only mode", and that is almost exactly right.

The one clue that localises it: the client creates its mTLS identity with a
plain `fs::write` on first run and hard-exits if that fails. Their app started,
so ordinary file creation in the config directory works. Only the config stores
were being lost — and those are the three files that go through `write_atomic`,
which writes a sibling temp and renames it over the target.

The rename is what breaks. The client ships as a full-trust MSIX package, so
its `%APPDATA%` writes are redirected into the package container. When the
package lives on a secondary drive, Windows keeps that redirected state on the
package's own volume: `C:\Users\<u>\AppData\Local\Packages\<pfn>\` stays a real
directory on C:, but its children (LocalCache, RoamingState, …) are junctions to
`D:\WpSystem\<SID>\…`. Both sides of our rename still spell `C:\Users\…`, so
nothing looks unusual, but they can resolve across that junction boundary — and
`std::fs::rename` is `MoveFileExW` with `MOVEFILE_REPLACE_EXISTING` and *not*
`MOVEFILE_COPY_ALLOWED`, so a cross-volume move fails outright rather than
degrading to a copy. Creating files still works, which is why everything else
about the install looks healthy.

So the fix is not to make the rename work — it is to stop treating it as the
only way to persist. `write_atomic` now falls back to writing the target in
place when the atomic route fails. That is the same operation the identity files
already use, and those demonstrably round-trip on the affected installs, so the
fallback lands on a path we know resolves. It trades crash-atomicity for exactly
the writes that would otherwise be lost, and nowhere else: temp+rename stays the
normal route everywhere it works.

Writing into a redirected location cannot desync from reading it — Microsoft
documents one private-location-first resolution order for both, so whichever
layer a write lands in is the layer the next read finds. The fallback verifies
anyway, by reading the bytes straight back: a write that reports success and
disappears is precisely the bug being fixed, so this path does not get to claim
success on an `Ok(())` alone. It costs nothing normally — it only runs on an
install that has already shown it does something unusual.

Two things this uncovered on the way:

The temp file was a single shared `<name>.json.tmp`, but these stores have five
whole-file writers (WinUI shell, session, console UI, CLI, Decky). Two saving at
once collide on it — on Windows the second write hits a sharing violation, and
worse, one process can rename the other's half-written bytes over the target.
The scratch path now carries the pid.

And none of this was visible to anyone. Every save on this page is
fire-and-forget by design (a failed settings write must never take a stream
down), so ~15 call sites discard the error and the UI cheerfully shows the
toggle you just moved. The reporter had no log file to send either, because
"Open log folder" was handing out a phantom path — a separate bug, already fixed
in f3c0ee47 but not in the 0.24.0 they were running. `store_health` records the
last persistence failure centrally, and Settings shows an error bar naming the
path when the store is refusing writes, so a client that cannot save says so
instead of pretending.

`update.rs` had hand-rolled the same temp+rename inline, so it neither cleaned
up its temp on a failed rename nor picks up the fallback; it now goes through
the one writer. The update floor silently never rising is how a declined update
comes back forever.

Deliberately NOT done: disabling MSIX AppData virtualization in the manifest
(`desktop6:FileSystemWriteVirtualization`). It would stop the redirection at the
source, but every existing packaged install's settings, profiles and pairings
live inside the container today — turning it off points the client at an empty
real `%APPDATA%` and silently resets all of them. That needs a migration, not a
manifest flag.

Also considered and not taken: resolving the destination directory with
`GetFinalPathNameByHandleW` and creating the temp inside the resolved path, to
keep atomicity. It does not reliably close this hole — when the target file
exists only in the unvirtualized layer while its directory resolves to the
private one, the rename still straddles the boundary — and it would rest on
canonicalisation behaving through the redirection, which we have never verified
on a packaged run.

Verified on the RTX box (.173, Windows 11 26200), which is the platform that
actually has these rename semantics: `cargo fmt --all --check`, the full
`pf-client-core` lib suite (109 passed), and clippy `-D warnings --all-targets`
on both `pf-client-core` and `punktfunk-client-windows` — all clean. Also green
under linux/amd64 (116 passed). Three new tests: the pid-scoped scratch path,
the fallback actually persisting and reading back when the atomic route is
blocked, and a genuinely unwritable store surfacing its error instead of
swallowing it.

The mechanism above is established from documentation and third-party reports,
not from a reproduction on a second-drive install — that box does not exist
here. The fix does not depend on the diagnosis being exactly right: it repairs
any install where the rename fails but a direct write succeeds.
2026-08-05 22:33:36 +02:00
enricobuehler dc0766b2f3 fix(client): the native rung now follows the stream's colour and reports true decode latency
The round-4 residuals, closed after the WP-D hardware verdict:

- VUI colour plumbing (the one silent-wrong): the picture's ACTIVE SPS's
  colour signalling (H.273 code points + range, with E.2.1's 'unspecified'
  inference where the VUI is silent — the vendored parser's defaults ARE the
  inferred values, verified) rides PicturePlan -> DecodedVkFrame ->
  NativeVkFrame per frame, never latched: the Windows host switches an HDR
  desktop to PQ/BT.2020 IN-BAND while the Welcome still says SDR. Before
  this, the native path would have painted PQ washed out, silently.
- Native decode-latency stat: the deliberately-deferred NativeVk arm of the
  pump's sampled once-per-stats-window decode measurement now feeds - the
  frame's (semaphore, semaphore_value) is the decode-done signal, resolved
  through the shipped ledger before a bounded, pure-measurement
  vkWaitSemaphores (VkH264Decoder::wait_decoded).
- The renegotiation-teardown window is settled as NO HOLE: rebuild_state now
  documents the full safety argument (graveyarded pools stay intact under
  presenter holds, tokens route strictly by generation, session objects die
  only post-drain with the generation gate INSIDE read_status), and the two
  backend comments that wrongly claimed stale pools were 'gone' are fixed.
- VK_KHR_unified_image_layouts stays deferred (fleet drivers lack it).

Adversarial review round 6: 3 minor findings (2 doc fixes applied; the
SPS-replaced-without-PPS-resend divergence stays a documented envelope
assumption - hosts re-send both at every keyframe, and a hardening
PlanWarning could cost real frames on a false positive).

Gates: fmt clean; clippy -D warnings zero (mac + pf-lxcheck2 container,
incl. pf-client-core/pf-presenter); tests 45+30+53 mac, 30+121+53 container.
2026-08-05 22:22:03 +02:00
enricobuehler 6331ae7fd9 fix(pf-vkdecode): zero-copy pool model + the two faults the first hardware run found
WP-D leg 1 (.25 RADV, distinct mode) root causes, both real:
1. Output starvation: the fixed 4-deep ring lost to a stream that keeps
   max_dpb_frames+1 = 8 pictures pending. Zero-copy fix (user
   requirement, no copies): one picture pool of required_slots +
   HOLD_HEADROOM(8) images decoupled from DPB slots — a re-activated
   slot binds a fresh free image, so a delivered picture is never a
   decode target; the WP-B pin layer became dead and is deleted.
   Per-image timeline semaphores carry the AVVkFrame contract: decode
   signals value+1, the presenter waits and signals back, later decodes
   wait the image's latest value — layout traffic ordered against
   reference reads with no copy anywhere.
2. RESULT_STATUS queries HANG RADV's VCN firmware (ring timeout,
   DEVICE_LOST): queryResultStatusSupport=false on the decode family.
   Queries are now caps-gated; without them poll/wait degrade to
   timeline-completion verdicts (FFmpeg parity — and the likely reason
   upstream never wired nb_queries). The Ally-X-class detection runs
   where drivers advertise the query; .173 probes NVIDIA/Windows-AMD.

Also: slice-only bitstream feeding (the field-proven consumer shape),
graveyarded pool retirement keyed by release tokens + generation,
decode-current-AU-before-status attribution, take_ready drained,
H264-bit gating, teardown short-circuit on disconnected channel.

On-glass: 48 AUs green on .25 holding 4 frames like the real client.
Gates: fmt clean, container clippy -D warnings zero, 27+121+52 green
both platforms.
2026-08-05 19:12:20 +02:00
enricobuehler d0659d2b61 feat(client): wire the native Vulkan decoder in behind PUNKTFUNK_DECODER=native-vulkan
M2 WP-C. video_vk_native.rs adapts the presenter's VulkanDecodeDevice to
pf-vkdecode (queue lock shared only when the families actually collide —
the one case the 2026-07-09 DEVICE_LOST race proved matters), and the
presenter consumes DecodedImage::NativeVk on its own device: no handle
import, no AVVkFrame co-authoring — wait the timeline, barrier to
sampled, existing crop-aware CSC, barrier back, release after the fence.

Frame lifetime is a token: presented, retired, displaced or dropped
mid-demotion, the guard's drop sends it exactly once; the backend
releases the decoder slot only after the status query resolves, so a
recycled slot can never report a false Failed. Driver-reported decode
failures and plan warnings ride the existing streak/reanchor machinery —
the Ally X corruption class is now a visible error, not a silent frame.

Opt-in only until WP-D's on-glass parity verdict; H.264 sessions only;
failures demote to the existing ladder. Known WP-D items recorded in
code: coincide-mode cross-queue reference overlap, renegotiation
teardown window, VUI colour plumbing.

Gates: fmt clean; container clippy -D warnings zero for pf-client-core +
pf-presenter + pf-vkdecode; 121+53+27 tests green.
2026-08-05 17:57:12 +02:00
enricobuehler 119ec0dd83 feat(client): PUNKTFUNK_DUMP_VIDEO captures the exact decoder input
Fixture-corpus enabler for the native-decode program (M0,
design/client-native-decode.md): every AU exactly as the pump hands it
to decode_frame — the raw concatenation plus a sidecar .idx carrying
the AU boundaries and wire flags a byte stream cannot. Best-effort by
design: any I/O error disables the capture, never the stream.
2026-08-05 11:02:37 +02:00
enricobuehler 3d4a659959 feat(host,sdk,kit): store claims, launcher entries, and plugin sources on the wire
M2 of design/library-scanner-plugins-implementation-plan.md. Everything a
library scanner plugin needs is now expressible over the API; all additive.

WP2.1/2.2 — store claims (D2). library.json gains a v2 shape ({entries, claims})
that loads the v1 bare array unchanged and is written on the first mutation.
PUT /library/provider/{p}?store=<s> claims a store for a provider: its entries
then surface with deterministic <store>:<external_id> ids and the store's own
badge instead of opaque custom:<id> ones. That identity is the whole point —
entry ids, GameStream FNV app ids, client art caches and Moonlight pins all
survive a title moving from an in-host scanner to a plugin. One provider per
store (409 otherwise); DELETE releases; an empty reconcile does NOT (a store can
legitimately have zero titles). While a claim is held, all_games() skips the
matching built-in scanner, so the two never double-list during the bridge.

WP2.3 — DetectHint gains steam_appid and env_marker, the two store-derived
signals the host used to read for itself. Without them a steam plugin's lease
tracking would drop from reaper-exact to dir-prefix, and Heroic-under-Proton
would lose the only signal that works. Malformed markers are dropped, not
honoured — this feeds a path that can end processes.

WP2.4/2.5 — role: game|launcher on the entry shapes (serde-default, skipped when
default), and a steam_ui launch kind valued bigpicture|desktop that opens the
Steam client itself. Validated inbound as well as at launch.

WP2.6 — GET/PUT /library/scanners generalizes to SOURCES: built-in scanners
minus claimed ones, plus claimed stores, plus any provider with entries. The
same library-scanners.json disabled-set backs all of them and the ids match by
construction, so a user's disabled state carries over verbatim through the whole
migration. A disabled plugin source has its entries filtered at read time,
exactly like a disabled scanner.

WP2.7/2.8 — plugin registration gains a category field (the console keeps
library plugins out of the nav); index entries gain categories and per-platform
detect probes, evaluated existence-only into CatalogEntry.detected so the host
never re-grows per-store knowledge. Index SCHEMA stays 1 — additive.

WP2.9 — OpenAPI + SDK regenerated on Linux; kit wire widened (LaunchSpec.kind is
now a plain string documented against the host's vocabulary — closes G3), and
ProviderClient.reconcile takes an optional store and returns the host's echoed
entries so a caller can detect a pre-M2 host silently ignoring the claim.

Also fixes a bug the S3 spike turned up: is_steam_launch gated on a steam:// URI,
so a steam_ui launcher entry would have skipped BOTH gamescope's --steam mode and
the B1 single-instance free — on a box autologged into game mode, the nested
second Steam would see the first and exit, crashing the spawn. It now tests the
first token.

Gates on .21: workspace tests green (punktfunk-host 425 passed), workspace
clippy -D warnings clean, cargo fmt --all --check clean, OpenAPI drift test
green. plugin-kit: tsc clean, 20 tests pass.
2026-08-05 09:39:31 +02:00
enricobuehler 56adb47026 fix(client-core): pad-audio references the WASAPI module by its mounted name
ci / web (pull_request) Successful in 56s
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The Windows build of pf-client-core has been red on main since the
pad-audio merge (#23): pad_audio.rs calls
`crate::audio_wasapi::device_by_id`, but lib.rs mounts audio_wasapi.rs AS
`crate::audio` via the #[path] per-OS swap — the `audio_wasapi` module
name never exists. Windows-gated call site, so every Linux leg stayed
green while both `windows / build` targets failed E0433.

One-line rename to the mounted path (+ the comment that pointed readers
at the phantom name). Verification is the PR's own windows leg — the
crate builds on no other platform this path compiles on.
2026-08-05 08:15:02 +02:00
enricobuehler d27e62f7c9 fix(pad-audio): close the twelve findings the sweep left open on this branch
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Everything the 2026-08-03 haptics sweep filed against the pad-audio branch (P2 + P3).
Four of them are the difference between a feature that works and one that fails silently.

**B6 — nothing ever un-muted the coils.** Every rumble report asserts `HAPTICS_SELECT`,
which is SDL's "disable audio haptics" bit: the firmware mutes the very voice coils the
0xD1 stream drives. No code anywhere cleared it again, so ONE rumble left tier-A haptics
silent for the rest of that pad's life — no error, nothing in a log, and the host happily
streaming into a muted actuator. `DsDevice.ds5AudioHapticsReport` is the documented undo
(flag0 with both bits clear); written EP0-direct when the stream starts and again after a
rumble stop while a stream is live, because the stop report re-mutes on its way past.

**B10 — the desktop mix could reach a controller's coils.** Pad endpoints were filtered out
inside `plan()` only. The watchdog, Follow mode and the parked default all go through
`judge_default`, which classifies by NAME — and a pad endpoint is deliberately stamped
"DualSense Wireless Controller" so games treat it as the pad's speaker. No name rule could
ever catch one. It now refuses them by identity.

**B27 — an out-of-range pad aliased onto a real slot.** The 0xCD plane's pad is the only u16
index and every consumer narrowed it with `as u8` on an assumption nothing enforced, so wire
pad 256 steered pad 0's speaker volumes. Rejected at the decoder, which makes the narrowings
lossless by construction. An existing test had pinned the bug in place, asserting that wire
pad 513 round-trips; corrected, plus a test for the 256→0 alias specifically.

**B7 — caps that arrived late were never announced.** The renderer commits the tier-A trade
only once its sink opens, which is well past the arrival burst's two 100 ms ticks, and
`set_pad_audio_caps` only stored an atomic. The client believed it had pad audio while the
host emitted nothing. The input task now compares the live registry against what the last
arrival actually carried and re-arms the burst itself — no new plumbing, and no extra traffic
when nothing changed.

The rest: `needs_aeb_kick` is finally ACTED on (R4) — a stored-but-not-served endpoint is
declined rather than opened, because `AUTOCONVERTPCM` makes it succeed and mis-route; a failed
provisioning no longer latches `PROVISIONED` for the process lifetime (R5), and `host_cap`
retries, so a host that started while the audio stack was busy recovers at the next connect
instead of the next reboot; the loopback init timeout reaps its thread instead of detaching one
per ~2 s reopen (R6); kind-change restarts are bounded (R3) since the trigger is a client-sent
arrival; the devtest uses the endpoint's real channel mask (B11) instead of letting wasapi
derive 0x0F against the endpoint's 0x33; the render loop asks `is_session_ended()` rather than
spinning at nice -16 (R12); short writes are counted and reported instead of dropping the tail
in silence (R13); and a frame addressed to another pad is dropped before it can seed the gap
tracker from a foreign sequence space (R14).

Verified: punktfunk-host clippy -D warnings **0 on a real Windows box**; Linux/amd64 clippy 0
with **589 tests** (pf-client-core 114, pf-inject 101, punktfunk-client-android 20,
punktfunk-core 345+1+8); Android :kit: tests + :app: compile green; fmt clean.

Six punktfunk-host tests fail on that Windows box. FIVE fail identically on a tree with no
pad-audio code at all (QUIC `Rejected(SetupFailed)` — the box's network environment); the
sixth passes 3/3 in isolation and only failed under the parallel run, on a locally-bound
ephemeral port. Neither is this change.

Still owed: on-glass. This is a hardware feature and none of it has been on a real DualSense
since the merge.
2026-08-04 23:55:47 +02:00
enricobuehler 0a72959ef7 Merge main into feat/android-pad-audio
86 commits of main, including the whole M1-M12 haptics sweep. Twelve conflicting files;
three of them were more than textual.

**The capability bits collided.** Both branches allocated the SAME wire bits for DIFFERENT
features: `client_caps 0x04` and `host_caps 0x20` are redundant desktop audio on main and
pad audio here. Merged naively, a peer would negotiate one and get the other. Pad audio
moves to the next free bits — `CLIENT_CAP_PAD_AUDIO = 0x08`, `HOST_CAP_PAD_AUDIO = 0x40` —
and the `abi.rs` mirrors move with them (their compile-time equality assertions caught the
mismatch, which is exactly what they are for).

**Both branches also claimed ABI v15.** Main's shipped (the rumble-policy floor), so the
pad-audio surface becomes **v16**.

**`native/input.rs` would have reintroduced a fixed bug.** This branch resets
`rumble_seq[idx]` on pad removal; M1 established that the client's reorder gate is
per-connection with no reset path, so restarting the host counter strands every later
envelope until it climbs back. Took main's seq-preserving `clear_pad_feedback` and kept only
the branch's `pad_streams.stop(idx)`.

The rest: `wiring_plan::plan` now delegates to main's `plan_with_formats`, so the pad-endpoint
filter moved into that body and the predicate behind it is factored out as `is_pad_render`
(also what B10 needs); `Ds5Feedback::AUDIO` derives from main's `REPORT_ID_LEN` like its
siblings; `AudioCtl` joins the explicitly-listed unhandled variants so the guard-false case is
covered rather than swept up by a `_`; `include/punktfunk_core.h` regenerated rather than
hand-merged.
2026-08-04 23:27:06 +02:00
enricobuehler 92f617a989 Merge remote-tracking branch 'origin/main' into worktree-haptics-m12-dry
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# Conflicts:
#	clients/android/kit/src/main/kotlin/io/unom/punktfunk/kit/GamepadFeedback.kt
#	crates/pf-client-core/src/gamepad.rs
2026-08-04 23:11:22 +02:00
enricobuehler fcf4076eb7 Merge remote-tracking branch 'origin/main' into worktree-haptics-m9-richfb
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windows / build (x86_64-pc-windows-msvc) (pull_request) Successful in 4m0s
# Conflicts:
#	clients/android/kit/src/main/kotlin/io/unom/punktfunk/kit/DsCapture.kt
#	crates/pf-client-core/src/gamepad.rs
2026-08-04 23:07:18 +02:00
enricobuehler b2e716ad5f Merge pull request 'fix(client/desktop): the Deck keeps its trackpad, and a pad stops buzzing at exit' (#38) from worktree-haptics-m6-presenter into main
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enricobuehler 42a0dd52be refactor(haptics): one copy of each thing every rumble path was transcribing
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Twelve findings from the sweep's DRY/docs/dead-code tail. Most are small; three found
real defects hiding behind the duplication.

**The UHID event ABI existed five times.** Every UHID gamepad backend — DualSense,
DualShock 4, Switch Pro, Steam Controller, Steam Controller 2 — carried its own verbatim
copy of the kernel's constants plus its own `put_cstr`, and they had already drifted:
`switch_pro` was missing the SET_REPORT pair entirely, and `steam_controller` read a
FIXED 16-byte SET_REPORT window instead of the event's own `size`. That last one is a
bug in both directions — a longer report was truncated, and a shorter one had the parser
reading whatever the reused event buffer still held past the payload, i.e. acting on
rumble values the game never wrote. Now one `uhid_abi` module owns the numbers plus the
two accessors that are easy to get subtly wrong, with tests on exactly that.

**A dead force-feedback id fallback.** ff-core's `input_ff_upload` picks a free effect
slot and writes it into the effect BEFORE uinput forwards the request, so the `id == -1`
branch could never run — and allocating from a local counter would have been the wrong
answer anyway, since the kernel owns that id space. Removed, with a `debug_assert` where
it stood.

**Apple's HID path silently dropped weak rumble.** `hidByte` took the top byte with no
non-zero floor, so every amplitude below 0x0100 rendered as exactly nothing. Android has
always floored it at 1; this was the odd one out. That converter also existed twice
byte-identically inside one Gradle module — now one `wireAmplitudeToByte`.

Also: the DS5 output-report layout gets named offsets (`dualsense_proto::out_report`)
documenting all three transport bases — USB 0, SDL payload −1, Bluetooth +2 — since the
differing bases are transport-forced, not drift. `pf-client-core` cannot import them (it
and `pf-inject` do not depend on each other, and a DualSense layout has no business in
`punktfunk-core`, their only shared crate), so its copy now DERIVES its offsets by
explicit subtraction and a test pins the relationship. `PUNKTFUNK_HID_EFFECT_MAX` sizes
the struct it describes instead of a second literal 11 — the header now emits
`uint8_t effect[PUNKTFUNK_HID_EFFECT_MAX]`. The rumble policy engine's `min_pulse_ms`
and `keepalive_ms` docs stop naming cases nothing implements: no in-tree caller sets
`min_pulse_ms`, and the macOS DualSense-over-BT keepalive the doc cited CANNOT be served
by the quirk, because that renderer skips writes whose levels are unchanged and would
swallow the engine's re-emit — it keeps its own keepalive instead. `TrackpadHaptic` is
marked as staged scaffolding (the tag is on a shipped wire; removing the variant would
not reclaim it). Three ×257-vs-`<<8` doc comments corrected — the scaling itself is fine,
both round-trip to 255. `backstop_ms.max(160)` deleted as unreachable (the engine floors
at 500). New tests for `Ds5Feedback` and for the Android rumble JNI packing on BOTH sides,
with `MAX_PADS <= 16` now a compile-time assertion rather than a comment.

Closes S1-S9, S11, T2, T3 (design/haptics-sweep-2026-08-03.md M12).

S11's second half is NOT a defect and was left alone: `clients/session/src/main.rs`
calls `set_forwarding` unconditionally on every params-build (its own comment explains
why — browse mode reuses one service across launches), so `Ctl::Forwarding` routinely
arrives unchanged and that early-out is what stops a redundant `sync_open` + Valve-HIDAPI
cycle each launch.

Verified: pf-inject clippy -D warnings 0 / 91 tests; pf-client-core + punktfunk-core
clippy 0 / 437 tests (amd64 container); punktfunk-client-android 7 tests; Android :kit:
6 tests; Apple swift build + 189 tests / 0 failures; cargo fmt --all --check clean. Each
new test probed by reverting its fix — the fixed SET_REPORT window fails 3, a broken pack
shift fails 3, dropping the amplitude floor fails 1, and a wrong DS5 offset either fails
the pin or refuses to compile.
2026-08-04 22:52:38 +02:00