enricobuehler e32bd30c85 fix(android): give the renderer its own USB connection, and add a real-world self test ...

**The bug.** The renderer was handed `HidUsbLink`'s file descriptor. That link's
own comment states the hazard exactly — "only one thread may drive a
connection's UsbRequests (requestWait() returns ANY completed request; a second
waiter would steal the reader's completions)" — and it is just as true of the
usbfs reap underneath: the isochronous ring and the HID reader were reaping each
other's URB completions. The standalone harness works because it owns its
descriptor by construction, which is precisely why it could never have caught
this. `DsCapture` now opens a dedicated connection via `openAuxConnection()` and
closes it only after the render thread is joined.

**The test.** Nothing exercised the CLIENT path without a host, so the two things
most likely to be wrong were invisible: whether the descriptor handed over is
exclusively ours, and whether the claim succeeds on this kernel. Neither is
unit-testable and a harness proves neither.

`nativePadAudioSelfTest` drives the voice coils with a tone through the real
path — the same aux connection, claim, sink and write loop the renderer uses —
and is triggered by `adb shell setprop debug.punktfunk.pad_audio_selftest 3`,
matching this repo's existing debug.punktfunk.* convention. It runs INSTEAD of
the renderer for that capture, never alongside it: two engines on one descriptor
is the fault being tested for, and I nearly shipped it into the test itself.

Underruns are deliberately not a failure condition — that is producer pacing.
The pass condition is data reaching the bus.

2026-08-03 00:38:58 +02:00

..

android

fix(android): give the renderer its own USB connection, and add a real-world self test

2026-08-03 00:38:58 +02:00

apple

feat(apple): the mic has an off switch you can reach mid-stream

2026-07-31 22:35:48 +02:00

cli

feat(core/client): an AU's prefix reaches the decoder while its tail is on the wire

2026-07-31 14:14:46 +02:00

decky

feat(client): "Capture system shortcuts" finally decides where Alt+Tab goes

2026-07-31 19:27:33 +02:00

linux

Merge remote-tracking branch 'origin/main' into audio/mic-latency-echo

2026-08-01 00:47:50 +02:00

probe

fix(host/linux): a no-channel session composites the metadata cursor — Mutter never embeds on a virtual stream

2026-07-30 00:35:25 +02:00

session

feat(pad-audio): DualSense audio haptics + speaker, host->client end to end

2026-08-01 12:07:06 +02:00

shared

feat(client): the punktfunk:// grammar — one parser, one emitter, one vector file

2026-07-28 20:32:32 +02:00

windows

Merge origin/main into audio/mic-latency-echo

2026-08-01 00:04:34 +02:00